diff options
Diffstat (limited to 'src/libcharon/plugins')
297 files changed, 67253 insertions, 0 deletions
diff --git a/src/libcharon/plugins/android/Makefile.am b/src/libcharon/plugins/android/Makefile.am new file mode 100644 index 000000000..e8423589c --- /dev/null +++ b/src/libcharon/plugins/android/Makefile.am @@ -0,0 +1,18 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-android.la +else +plugin_LTLIBRARIES = libstrongswan-android.la +endif + +libstrongswan_android_la_SOURCES = \ + android_plugin.c android_plugin.h \ + android_handler.c android_handler.h + +libstrongswan_android_la_LDFLAGS = -module -avoid-version +libstrongswan_android_la_LIBADD = -lcutils diff --git a/src/libcharon/plugins/android/Makefile.in b/src/libcharon/plugins/android/Makefile.in new file mode 100644 index 000000000..9f12a9c75 --- /dev/null +++ b/src/libcharon/plugins/android/Makefile.in @@ -0,0 +1,590 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# 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pdf pdf-am ps ps-am tags uninstall uninstall-am \ + uninstall-pluginLTLIBRARIES + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/android/android_handler.c b/src/libcharon/plugins/android/android_handler.c new file mode 100644 index 000000000..a475eeaab --- /dev/null +++ b/src/libcharon/plugins/android/android_handler.c @@ -0,0 +1,225 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "android_handler.h" + +#include <utils/linked_list.h> + +#include <cutils/properties.h> + +typedef struct private_android_handler_t private_android_handler_t; + +/** + * Private data of an android_handler_t object. + */ +struct private_android_handler_t { + + /** + * Public android_handler_t interface. + */ + android_handler_t public; + + /** + * List of registered DNS servers + */ + linked_list_t *dns; +}; + +/** + * Struct to store a pair of old and installed DNS servers + */ +typedef struct { + /** installed dns server */ + host_t *dns; + /** old dns server */ + host_t *old; +} dns_pair_t; + +/** + * Destroy a pair of old and installed DNS servers + */ +void destroy_dns_pair(dns_pair_t *this) +{ + DESTROY_IF(this->dns); + DESTROY_IF(this->old); + free(this); +} + +/** + * Filter pairs of DNS servers + */ +bool filter_dns_pair(void *data, dns_pair_t **in, host_t **out) +{ + *out = (*in)->dns; + return TRUE; +} + +/** + * Read DNS server property with a given index + */ +host_t *get_dns_server(int index) +{ + host_t *dns = NULL; + char key[10], value[PROPERTY_VALUE_MAX]; + + if (snprintf(key, sizeof(key), "net.dns%d", index) >= sizeof(key)) + { + return NULL; + } + + if (property_get(key, value, NULL) > 0) + { + dns = host_create_from_string(value, 0); + } + return dns; +} + +/** + * Set DNS server property with a given index + */ +bool set_dns_server(int index, host_t *dns) +{ + char key[10], value[PROPERTY_VALUE_MAX]; + + if (snprintf(key, sizeof(key), "net.dns%d", index) >= sizeof(key)) + { + return FALSE; + } + + if (dns) + { + if (snprintf(value, sizeof(value), "%H", dns) >= sizeof(value)) + { + return FALSE; + } + } + else + { + value[0] = '\0'; + } + + if (property_set(key, value) != 0) + { + return FALSE; + } + return TRUE; +} + +METHOD(attribute_handler_t, handle, bool, + private_android_handler_t *this, identification_t *id, + configuration_attribute_type_t type, chunk_t data) +{ + switch (type) + { + case INTERNAL_IP4_DNS: + { + host_t *dns; + dns_pair_t *pair; + int index; + + dns = host_create_from_chunk(AF_INET, data, 0); + if (dns) + { + pair = malloc_thing(dns_pair_t); + pair->dns = dns; + index = this->dns->get_count(this->dns) + 1; + pair->old = get_dns_server(index); + set_dns_server(index, dns); + this->dns->insert_last(this->dns, pair); + return TRUE; + } + return FALSE; + } + default: + return FALSE; + } +} + +METHOD(attribute_handler_t, release, void, + private_android_handler_t *this, identification_t *server, + configuration_attribute_type_t type, chunk_t data) +{ + if (type == INTERNAL_IP4_DNS) + { + enumerator_t *enumerator; + dns_pair_t *pair; + int index; + + enumerator = this->dns->create_enumerator(this->dns); + for (index = 1; enumerator->enumerate(enumerator, &pair); index++) + { + if (chunk_equals(pair->dns->get_address(pair->dns), data)) + { + this->dns->remove_at(this->dns, enumerator); + set_dns_server(index, pair->old); + destroy_dns_pair(pair); + } + } + enumerator->destroy(enumerator); + } +} + +METHOD(enumerator_t, enumerate_dns, bool, + enumerator_t *this, configuration_attribute_type_t *type, chunk_t *data) +{ + *type = INTERNAL_IP4_DNS; + *data = chunk_empty; + /* stop enumeration */ + this->enumerate = (void*)return_false; + return TRUE; +} + +METHOD(attribute_handler_t, create_attribute_enumerator, enumerator_t *, + android_handler_t *this, identification_t *id, host_t *vip) +{ + enumerator_t *enumerator; + + INIT(enumerator, + .enumerate = (void*)_enumerate_dns, + .destroy = (void*)free, + ); + return enumerator; +} + +METHOD(android_handler_t, destroy, void, + private_android_handler_t *this) +{ + this->dns->destroy_function(this->dns, (void*)destroy_dns_pair); + free(this); +} + +/** + * See header + */ +android_handler_t *android_handler_create() +{ + private_android_handler_t *this; + + INIT(this, + .public = { + .handler = { + .handle = _handle, + .release = _release, + .create_attribute_enumerator = _create_attribute_enumerator, + }, + .destroy = _destroy, + }, + .dns = linked_list_create(), + ); + + return &this->public; +} + diff --git a/src/libcharon/plugins/android/android_handler.h b/src/libcharon/plugins/android/android_handler.h new file mode 100644 index 000000000..af620505b --- /dev/null +++ b/src/libcharon/plugins/android/android_handler.h @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup android_handler android_handler + * @{ @ingroup android + */ + +#ifndef ANDROID_HANDLER_H_ +#define ANDROID_HANDLER_H_ + +#include <attributes/attribute_handler.h> + +typedef struct android_handler_t android_handler_t; + +/** + * Android specific DNS attribute handler. + */ +struct android_handler_t { + + /** + * Implements attribute_handler_t. + */ + attribute_handler_t handler; + + /** + * Destroy a android_handler_t. + */ + void (*destroy)(android_handler_t *this); +}; + +/** + * Create a android_handler instance. + */ +android_handler_t *android_handler_create(); + +#endif /** ANDROID_HANDLER_H_ @}*/ diff --git a/src/libcharon/plugins/android/android_plugin.c b/src/libcharon/plugins/android/android_plugin.c new file mode 100644 index 000000000..9a558f53b --- /dev/null +++ b/src/libcharon/plugins/android/android_plugin.c @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2010 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "android_plugin.h" +#include "android_handler.h" + +#include <hydra.h> +#include <daemon.h> + +typedef struct private_android_plugin_t private_android_plugin_t; + +/** + * Private data of an android_plugin_t object. + */ +struct private_android_plugin_t { + + /** + * Public android_plugin_t interface. + */ + android_plugin_t public; + + /** + * Android specific DNS handler + */ + android_handler_t *handler; +}; + +METHOD(plugin_t, destroy, void, + private_android_plugin_t *this) +{ + hydra->attributes->remove_handler(hydra->attributes, &this->handler->handler); + this->handler->destroy(this->handler); + free(this); +} + +/** + * See header + */ +plugin_t *android_plugin_create() +{ + private_android_plugin_t *this; + + INIT(this, + .public.plugin = { + .destroy = _destroy, + }, + .handler = android_handler_create(), + ); + + hydra->attributes->add_handler(hydra->attributes, &this->handler->handler); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/android/android_plugin.h b/src/libcharon/plugins/android/android_plugin.h new file mode 100644 index 000000000..987f2aa37 --- /dev/null +++ b/src/libcharon/plugins/android/android_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2010 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup android android + * @ingroup cplugins + * + * @defgroup android_plugin android_plugin + * @{ @ingroup android + */ + +#ifndef ANDROID_PLUGIN_H_ +#define ANDROID_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct android_plugin_t android_plugin_t; + +/** + * Plugin providing functionality specific to the Android platform. + */ +struct android_plugin_t { + + /** + * Implements plugin interface. + */ + plugin_t plugin; +}; + +#endif /** ANDROID_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/dhcp/Makefile.am b/src/libcharon/plugins/dhcp/Makefile.am new file mode 100644 index 000000000..45d7536be --- /dev/null +++ b/src/libcharon/plugins/dhcp/Makefile.am @@ -0,0 +1,18 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-dhcp.la +else +plugin_LTLIBRARIES = libstrongswan-dhcp.la +endif + +libstrongswan_dhcp_la_SOURCES = dhcp_plugin.h dhcp_plugin.c \ + dhcp_provider.h dhcp_provider.c \ + dhcp_socket.h dhcp_socket.c \ + dhcp_transaction.h dhcp_transaction.c + +libstrongswan_dhcp_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/dhcp/Makefile.in b/src/libcharon/plugins/dhcp/Makefile.in new file mode 100644 index 000000000..7606b963c --- /dev/null +++ b/src/libcharon/plugins/dhcp/Makefile.in @@ -0,0 +1,590 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src/libcharon/plugins/dhcp +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/config/libtool.m4 \ + $(top_srcdir)/m4/config/ltoptions.m4 \ + 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000000000..829fd6356 --- /dev/null +++ b/src/libcharon/plugins/dhcp/dhcp_plugin.c @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "dhcp_plugin.h" + +#include <hydra.h> +#include <daemon.h> + +#include "dhcp_socket.h" +#include "dhcp_provider.h" + +typedef struct private_dhcp_plugin_t private_dhcp_plugin_t; + +/** + * private data of dhcp plugin + */ +struct private_dhcp_plugin_t { + + /** + * implements plugin interface + */ + dhcp_plugin_t public; + + /** + * DHCP communication socket + */ + dhcp_socket_t *socket; + + /** + * Attribute provider + */ + dhcp_provider_t *provider; +}; + +METHOD(plugin_t, destroy, void, + private_dhcp_plugin_t *this) +{ + hydra->attributes->remove_provider(hydra->attributes, + &this->provider->provider); + this->provider->destroy(this->provider); + this->socket->destroy(this->socket); + free(this); +} + +/** + * Plugin constructor. + */ +plugin_t *dhcp_plugin_create() +{ + private_dhcp_plugin_t *this; + + INIT(this, + .public.plugin.destroy = _destroy, + .socket = dhcp_socket_create(), + ); + + if (!this->socket) + { + free(this); + return NULL; + } + + this->provider = dhcp_provider_create(this->socket); + hydra->attributes->add_provider(hydra->attributes, + &this->provider->provider); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/dhcp/dhcp_plugin.h b/src/libcharon/plugins/dhcp/dhcp_plugin.h new file mode 100644 index 000000000..b21b44d28 --- /dev/null +++ b/src/libcharon/plugins/dhcp/dhcp_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup dhcp dhcp + * @ingroup cplugins + * + * @defgroup dhcp_plugin dhcp_plugin + * @{ @ingroup dhcp + */ + +#ifndef DHCP_PLUGIN_H_ +#define DHCP_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct dhcp_plugin_t dhcp_plugin_t; + +/** + * DHCP based attribute provider plugin. + */ +struct dhcp_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** DHCP_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/dhcp/dhcp_provider.c b/src/libcharon/plugins/dhcp/dhcp_provider.c new file mode 100644 index 000000000..dbcceb6ce --- /dev/null +++ b/src/libcharon/plugins/dhcp/dhcp_provider.c @@ -0,0 +1,194 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "dhcp_provider.h" + +#include <utils/hashtable.h> +#include <threading/mutex.h> + +typedef struct private_dhcp_provider_t private_dhcp_provider_t; + +/** + * Private data of an dhcp_provider_t object. + */ +struct private_dhcp_provider_t { + + /** + * Public dhcp_provider_t interface. + */ + dhcp_provider_t public; + + /** + * Completed DHCP transactions + */ + hashtable_t *transactions; + + /** + * Lock for transactions + */ + mutex_t *mutex; + + /** + * DHCP communication socket + */ + dhcp_socket_t *socket; +}; + +/** + * Hashtable hash function + */ +static u_int hash(void *key) +{ + return (uintptr_t)key; +} + +/** + * Hashtable equals function + */ +static bool equals(void *a, void *b) +{ + return a == b; +} + +/** + * Hash ID and host to a key + */ +static uintptr_t hash_id_host(identification_t *id, host_t *host) +{ + return chunk_hash_inc(id->get_encoding(id), + chunk_hash(host->get_address(host))); +} + +/** + * Hash a DHCP transaction to a key, using address and id + */ +static uintptr_t hash_transaction(dhcp_transaction_t *transaction) +{ + return hash_id_host(transaction->get_identity(transaction), + transaction->get_address(transaction)); +} + +METHOD(attribute_provider_t, acquire_address, host_t*, + private_dhcp_provider_t *this, char *pool, + identification_t *id, host_t *requested) +{ + if (streq(pool, "dhcp")) + { + dhcp_transaction_t *transaction, *old; + host_t *vip; + + transaction = this->socket->enroll(this->socket, id); + if (!transaction) + { + return NULL; + } + vip = transaction->get_address(transaction); + vip = vip->clone(vip); + this->mutex->lock(this->mutex); + old = this->transactions->put(this->transactions, + (void*)hash_transaction(transaction), transaction); + this->mutex->unlock(this->mutex); + DESTROY_IF(old); + return vip; + } + return NULL; +} + +METHOD(attribute_provider_t, release_address, bool, + private_dhcp_provider_t *this, char *pool, + host_t *address, identification_t *id) +{ + if (streq(pool, "dhcp")) + { + dhcp_transaction_t *transaction; + + this->mutex->lock(this->mutex); + transaction = this->transactions->remove(this->transactions, + (void*)hash_id_host(id, address)); + this->mutex->unlock(this->mutex); + if (transaction) + { + this->socket->release(this->socket, transaction); + transaction->destroy(transaction); + return TRUE; + } + } + return FALSE; +} + +METHOD(attribute_provider_t, create_attribute_enumerator, enumerator_t*, + private_dhcp_provider_t *this, identification_t *id, host_t *vip) +{ + dhcp_transaction_t *transaction; + + if (!vip) + { + return NULL; + } + this->mutex->lock(this->mutex); + transaction = this->transactions->get(this->transactions, + (void*)hash_id_host(id, vip)); + if (!transaction) + { + this->mutex->unlock(this->mutex); + return NULL; + } + return enumerator_create_cleaner( + transaction->create_attribute_enumerator(transaction), + (void*)this->mutex->unlock, this->mutex); +} + +METHOD(dhcp_provider_t, destroy, void, + private_dhcp_provider_t *this) +{ + enumerator_t *enumerator; + dhcp_transaction_t *value; + void *key; + + enumerator = this->transactions->create_enumerator(this->transactions); + while (enumerator->enumerate(enumerator, &key, &value)) + { + value->destroy(value); + } + enumerator->destroy(enumerator); + this->transactions->destroy(this->transactions); + this->mutex->destroy(this->mutex); + free(this); +} + +/** + * See header + */ +dhcp_provider_t *dhcp_provider_create(dhcp_socket_t *socket) +{ + private_dhcp_provider_t *this; + + INIT(this, + .public = { + .provider = { + .acquire_address = _acquire_address, + .release_address = _release_address, + .create_attribute_enumerator = _create_attribute_enumerator, + }, + .destroy = _destroy, + }, + .socket = socket, + .mutex = mutex_create(MUTEX_TYPE_DEFAULT), + .transactions = hashtable_create(hash, equals, 8), + ); + + return &this->public; +} + diff --git a/src/libcharon/plugins/dhcp/dhcp_provider.h b/src/libcharon/plugins/dhcp/dhcp_provider.h new file mode 100644 index 000000000..e720e876c --- /dev/null +++ b/src/libcharon/plugins/dhcp/dhcp_provider.h @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup dhcp_provider dhcp_provider + * @{ @ingroup dhcp + */ + +#ifndef DHCP_PROVIDER_H_ +#define DHCP_PROVIDER_H_ + +typedef struct dhcp_provider_t dhcp_provider_t; + +#include "dhcp_socket.h" + +#include <attributes/attribute_provider.h> + +/** + * DHCP based attribute provider. + */ +struct dhcp_provider_t { + + /** + * Implements attribute_provier_t interface. + */ + attribute_provider_t provider; + + /** + * Destroy a dhcp_provider_t. + */ + void (*destroy)(dhcp_provider_t *this); +}; + +/** + * Create a dhcp_provider instance. + * + * @param socket socket to use for DHCP communication + * @return provider instance + */ +dhcp_provider_t *dhcp_provider_create(dhcp_socket_t *socket); + +#endif /** DHCP_PROVIDER_H_ @}*/ diff --git a/src/libcharon/plugins/dhcp/dhcp_socket.c b/src/libcharon/plugins/dhcp/dhcp_socket.c new file mode 100644 index 000000000..f61b3a60e --- /dev/null +++ b/src/libcharon/plugins/dhcp/dhcp_socket.c @@ -0,0 +1,758 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "dhcp_socket.h" + +#include <unistd.h> +#include <errno.h> +#include <string.h> +#include <netinet/in.h> +#include <netinet/ip.h> +#include <netinet/udp.h> +#include <linux/if_arp.h> +#include <linux/if_ether.h> +#include <linux/filter.h> + +#include <utils/linked_list.h> +#include <utils/identification.h> +#include <threading/mutex.h> +#include <threading/condvar.h> +#include <threading/thread.h> + +#include <daemon.h> +#include <processing/jobs/callback_job.h> + +#define DHCP_SERVER_PORT 67 +#define DHCP_CLIENT_PORT 68 +#define DHCP_TRIES 5 + +typedef struct private_dhcp_socket_t private_dhcp_socket_t; + +/** + * Private data of an dhcp_socket_t object. + */ +struct private_dhcp_socket_t { + + /** + * Public dhcp_socket_t interface. + */ + dhcp_socket_t public; + + /** + * Random number generator + */ + rng_t *rng; + + /** + * List of transactions in DISCOVER + */ + linked_list_t *discover; + + /** + * List of transactions in REQUEST + */ + linked_list_t *request; + + /** + * List of successfully completed transactions + */ + linked_list_t *completed; + + /** + * Lock for transactions + */ + mutex_t *mutex; + + /** + * Condvar to wait for transaction completion + */ + condvar_t *condvar; + + /** + * Threads waiting in condvar + */ + int waiting; + + /** + * DHCP send socket + */ + int send; + + /** + * DHCP receive socket + */ + int receive; + + /** + * Do we use per-identity or random leases (and MAC addresses) + */ + bool identity_lease; + + /** + * DHCP server address, or broadcast + */ + host_t *dst; + + /** + * Callback job receiving DHCP responses + */ + callback_job_t *job; +}; + +/** + * DHCP opcode (or BOOTP actually) + */ +typedef enum { + BOOTREQUEST = 1, + BOOTREPLY = 2, +} dhcp_opcode_t; + +/** + * Some DHCP options used + */ +typedef enum { + DHCP_DNS_SERVER = 6, + DHCP_HOST_NAME = 12, + DHCP_NBNS_SERVER = 44, + DHCP_REQUESTED_IP = 50, + DHCP_MESSAGE_TYPE = 53, + DHCP_SERVER_ID = 54, + DHCP_PARAM_REQ_LIST = 55, + DHCP_CLIENT_ID = 61, + DHCP_OPTEND = 255, +} dhcp_option_type_t; + +/** + * DHCP messages types in the DHCP_MESSAGE_TYPE option + */ +typedef enum { + DHCP_DISCOVER = 1, + DHCP_OFFER = 2, + DHCP_REQUEST = 3, + DHCP_DECLINE = 4, + DHCP_ACK = 5, + DHCP_NAK = 6, + DHCP_RELEASE = 7, + DHCP_INFORM = 8, +} dhcp_message_type_t; +/** + * DHCP option encoding, a TLV + */ +typedef struct __attribute__((packed)) { + u_int8_t type; + u_int8_t len; + char data[]; +} dhcp_option_t; + +/** + * DHCP message format, with a maximum size options buffer + */ +typedef struct __attribute__((packed)) { + u_int8_t opcode; + u_int8_t hw_type; + u_int8_t hw_addr_len; + u_int8_t hop_count; + u_int32_t transaction_id; + u_int16_t number_of_seconds; + u_int16_t flags; + u_int32_t client_address; + u_int32_t your_address; + u_int32_t server_address; + u_int32_t gateway_address; + char client_hw_addr[6]; + char client_hw_padding[10]; + char server_hostname[64]; + char boot_filename[128]; + u_int32_t magic_cookie; + char options[252]; +} dhcp_t; + +/** + * Prepare a DHCP message for a given transaction + */ +static int prepare_dhcp(private_dhcp_socket_t *this, + dhcp_transaction_t *transaction, + dhcp_message_type_t type, dhcp_t *dhcp) +{ + chunk_t chunk, broadcast = chunk_from_chars(0xFF,0xFF,0xFF,0xFF); + identification_t *identity; + dhcp_option_t *option; + int optlen = 0; + host_t *src; + u_int32_t id; + + memset(dhcp, 0, sizeof(*dhcp)); + dhcp->opcode = BOOTREQUEST; + dhcp->hw_type = ARPHRD_ETHER; + dhcp->hw_addr_len = 6; + dhcp->transaction_id = transaction->get_id(transaction); + if (chunk_equals(broadcast, this->dst->get_address(this->dst))) + { + /* TODO: send with 0.0.0.0 source address */ + } + else + { + /* act as relay agent */ + src = charon->kernel_interface->get_source_addr( + charon->kernel_interface, this->dst, NULL); + if (src) + { + memcpy(&dhcp->gateway_address, src->get_address(src).ptr, + sizeof(dhcp->gateway_address)); + src->destroy(src); + } + } + + identity = transaction->get_identity(transaction); + chunk = identity->get_encoding(identity); + /* magic bytes, a locally administered unicast MAC */ + dhcp->client_hw_addr[0] = 0x7A; + dhcp->client_hw_addr[1] = 0xA7; + /* with ID specific postfix */ + if (this->identity_lease) + { + id = htonl(chunk_hash(chunk)); + } + else + { + id = transaction->get_id(transaction); + } + memcpy(&dhcp->client_hw_addr[2], &id, sizeof(id)); + + dhcp->magic_cookie = htonl(0x63825363); + + option = (dhcp_option_t*)&dhcp->options[optlen]; + option->type = DHCP_MESSAGE_TYPE; + option->len = 1; + option->data[0] = type; + optlen += sizeof(dhcp_option_t) + option->len; + + if (identity->get_type(identity) == ID_FQDN) + { + option = (dhcp_option_t*)&dhcp->options[optlen]; + option->type = DHCP_HOST_NAME; + option->len = min(chunk.len, 64); + memcpy(option->data, chunk.ptr, option->len); + optlen += sizeof(dhcp_option_t) + option->len; + } + + option = (dhcp_option_t*)&dhcp->options[optlen]; + option->type = DHCP_CLIENT_ID; + option->len = min(chunk.len, 64); + memcpy(option->data, chunk.ptr, option->len); + optlen += sizeof(dhcp_option_t) + option->len; + + return optlen; +} + +/** + * Send a DHCP message with given options length + */ +static bool send_dhcp(private_dhcp_socket_t *this, + dhcp_transaction_t *transaction, dhcp_t *dhcp, int optlen) +{ + host_t *dst; + ssize_t len; + + dst = transaction->get_server(transaction); + if (!dst) + { + dst = this->dst; + } + len = offsetof(dhcp_t, magic_cookie) + ((optlen + 4) / 64 * 64 + 64); + return sendto(this->send, dhcp, len, 0, dst->get_sockaddr(dst), + *dst->get_sockaddr_len(dst)) == len; +} + +/** + * Send DHCP discover using a given transaction + */ +static bool discover(private_dhcp_socket_t *this, + dhcp_transaction_t *transaction) +{ + dhcp_option_t *option; + dhcp_t dhcp; + int optlen; + + optlen = prepare_dhcp(this, transaction, DHCP_DISCOVER, &dhcp); + + DBG1(DBG_CFG, "sending DHCP DISCOVER to %H", this->dst); + + option = (dhcp_option_t*)&dhcp.options[optlen]; + option->type = DHCP_PARAM_REQ_LIST; + option->len = 2; + option->data[0] = DHCP_DNS_SERVER; + option->data[1] = DHCP_NBNS_SERVER; + optlen += sizeof(dhcp_option_t) + option->len; + + dhcp.options[optlen++] = DHCP_OPTEND; + + if (!send_dhcp(this, transaction, &dhcp, optlen)) + { + DBG1(DBG_CFG, "sending DHCP DISCOVER failed: %s", strerror(errno)); + return FALSE; + } + return TRUE; +} + +/** + * Send DHCP request using a given transaction + */ +static bool request(private_dhcp_socket_t *this, + dhcp_transaction_t *transaction) +{ + dhcp_option_t *option; + dhcp_t dhcp; + host_t *offer, *server; + chunk_t chunk; + int optlen; + + optlen = prepare_dhcp(this, transaction, DHCP_REQUEST, &dhcp); + + offer = transaction->get_address(transaction); + server = transaction->get_server(transaction); + if (!offer || !server) + { + return FALSE; + } + DBG1(DBG_CFG, "sending DHCP REQUEST for %H to %H", offer, server); + + option = (dhcp_option_t*)&dhcp.options[optlen]; + option->type = DHCP_REQUESTED_IP; + option->len = 4; + chunk = offer->get_address(offer); + memcpy(option->data, chunk.ptr, min(chunk.len, option->len)); + optlen += sizeof(dhcp_option_t) + option->len; + + option = (dhcp_option_t*)&dhcp.options[optlen]; + option->type = DHCP_SERVER_ID; + option->len = 4; + chunk = server->get_address(server); + memcpy(option->data, chunk.ptr, min(chunk.len, option->len)); + optlen += sizeof(dhcp_option_t) + option->len; + + option = (dhcp_option_t*)&dhcp.options[optlen]; + option->type = DHCP_PARAM_REQ_LIST; + option->len = 2; + option->data[0] = DHCP_DNS_SERVER; + option->data[1] = DHCP_NBNS_SERVER; + optlen += sizeof(dhcp_option_t) + option->len; + + dhcp.options[optlen++] = DHCP_OPTEND; + + if (!send_dhcp(this, transaction, &dhcp, optlen)) + { + DBG1(DBG_CFG, "sending DHCP REQUEST failed: %s", strerror(errno)); + return FALSE; + } + return TRUE; +} + +METHOD(dhcp_socket_t, enroll, dhcp_transaction_t*, + private_dhcp_socket_t *this, identification_t *identity) +{ + dhcp_transaction_t *transaction; + u_int32_t id; + int try; + + this->rng->get_bytes(this->rng, sizeof(id), (u_int8_t*)&id); + transaction = dhcp_transaction_create(id, identity); + + this->mutex->lock(this->mutex); + this->discover->insert_last(this->discover, transaction); + try = 1; + while (try <= DHCP_TRIES && discover(this, transaction)) + { + if (!this->condvar->timed_wait(this->condvar, this->mutex, 1000 * try) && + this->request->find_first(this->request, NULL, + (void**)&transaction) == SUCCESS) + { + break; + } + try++; + } + if (this->discover->remove(this->discover, transaction, NULL)) + { /* no OFFER received */ + this->mutex->unlock(this->mutex); + transaction->destroy(transaction); + DBG1(DBG_CFG, "DHCP DISCOVER timed out"); + return NULL; + } + + try = 1; + while (try <= DHCP_TRIES && request(this, transaction)) + { + if (!this->condvar->timed_wait(this->condvar, this->mutex, 1000 * try) && + this->completed->remove(this->completed, transaction, NULL)) + { + break; + } + try++; + } + if (this->request->remove(this->request, transaction, NULL)) + { /* no ACK received */ + this->mutex->unlock(this->mutex); + transaction->destroy(transaction); + DBG1(DBG_CFG, "DHCP REQUEST timed out"); + return NULL; + } + this->mutex->unlock(this->mutex); + + return transaction; +} + +METHOD(dhcp_socket_t, release, void, + private_dhcp_socket_t *this, dhcp_transaction_t *transaction) +{ + dhcp_option_t *option; + dhcp_t dhcp; + host_t *release, *server; + chunk_t chunk; + int optlen; + + optlen = prepare_dhcp(this, transaction, DHCP_RELEASE, &dhcp); + + release = transaction->get_address(transaction); + server = transaction->get_server(transaction); + if (!release || !server) + { + return; + } + DBG1(DBG_CFG, "sending DHCP RELEASE for %H to %H", release, server); + + chunk = release->get_address(release); + memcpy(&dhcp.client_address, chunk.ptr, + min(chunk.len, sizeof(dhcp.client_address))); + + option = (dhcp_option_t*)&dhcp.options[optlen]; + option->type = DHCP_SERVER_ID; + option->len = 4; + chunk = server->get_address(server); + memcpy(option->data, chunk.ptr, min(chunk.len, option->len)); + optlen += sizeof(dhcp_option_t) + option->len; + + dhcp.options[optlen++] = DHCP_OPTEND; + + if (!send_dhcp(this, transaction, &dhcp, optlen)) + { + DBG1(DBG_CFG, "sending DHCP RELEASE failed: %s", strerror(errno)); + } +} + +/** + * Handle a DHCP OFFER + */ +static void handle_offer(private_dhcp_socket_t *this, dhcp_t *dhcp, int optlen) +{ + dhcp_transaction_t *transaction = NULL; + enumerator_t *enumerator; + host_t *offer, *server; + + offer = host_create_from_chunk(AF_INET, + chunk_from_thing(dhcp->your_address), 0); + server = host_create_from_chunk(AF_INET, + chunk_from_thing(dhcp->server_address), DHCP_SERVER_PORT); + + this->mutex->lock(this->mutex); + enumerator = this->discover->create_enumerator(this->discover); + while (enumerator->enumerate(enumerator, &transaction)) + { + if (transaction->get_id(transaction) == dhcp->transaction_id) + { + DBG1(DBG_CFG, "received DHCP OFFER %H from %H", offer, server); + this->discover->remove_at(this->discover, enumerator); + this->request->insert_last(this->request, transaction); + transaction->set_address(transaction, offer->clone(offer)); + transaction->set_server(transaction, server->clone(server)); + break; + } + } + enumerator->destroy(enumerator); + + if (transaction) + { + int optsize, optpos = 0, pos; + dhcp_option_t *option; + + while (optlen > sizeof(dhcp_option_t)) + { + option = (dhcp_option_t*)&dhcp->options[optpos]; + optsize = sizeof(dhcp_option_t) + option->len; + if (option->type == DHCP_OPTEND || optlen < optsize) + { + break; + } + if (option->type == DHCP_DNS_SERVER || + option->type == DHCP_NBNS_SERVER) + { + for (pos = 0; pos + 4 <= option->len; pos += 4) + { + transaction->add_attribute(transaction, option->type == + DHCP_DNS_SERVER ? INTERNAL_IP4_DNS : INTERNAL_IP4_NBNS, + chunk_create((char*)&option->data[pos], 4)); + } + } + optlen -= optsize; + optpos += optsize; + } + } + this->mutex->unlock(this->mutex); + this->condvar->broadcast(this->condvar); + offer->destroy(offer); + server->destroy(server); +} + +/** + * Handle a DHCP ACK + */ +static void handle_ack(private_dhcp_socket_t *this, dhcp_t *dhcp, int optlen) +{ + dhcp_transaction_t *transaction; + enumerator_t *enumerator; + host_t *offer; + + offer = host_create_from_chunk(AF_INET, + chunk_from_thing(dhcp->your_address), 0); + + this->mutex->lock(this->mutex); + enumerator = this->request->create_enumerator(this->request); + while (enumerator->enumerate(enumerator, &transaction)) + { + if (transaction->get_id(transaction) == dhcp->transaction_id) + { + DBG1(DBG_CFG, "received DHCP ACK for %H", offer); + this->request->remove_at(this->request, enumerator); + this->completed->insert_last(this->completed, transaction); + break; + } + } + enumerator->destroy(enumerator); + this->mutex->unlock(this->mutex); + this->condvar->broadcast(this->condvar); + offer->destroy(offer); +} + +/** + * Receive DHCP responses + */ +static job_requeue_t receive_dhcp(private_dhcp_socket_t *this) +{ + struct sockaddr_ll addr; + socklen_t addr_len = sizeof(addr); + struct __attribute__((packed)) { + struct iphdr ip; + struct udphdr udp; + dhcp_t dhcp; + } packet; + int oldstate, optlen, origoptlen, optsize, optpos = 0; + ssize_t len; + dhcp_option_t *option; + + oldstate = thread_cancelability(TRUE); + len = recvfrom(this->receive, &packet, sizeof(packet), 0, + (struct sockaddr*)&addr, &addr_len); + thread_cancelability(oldstate); + + if (len >= sizeof(struct iphdr) + sizeof(struct udphdr) + + offsetof(dhcp_t, options)) + { + origoptlen = optlen = len - sizeof(struct iphdr) + + sizeof(struct udphdr) + offsetof(dhcp_t, options); + while (optlen > sizeof(dhcp_option_t)) + { + option = (dhcp_option_t*)&packet.dhcp.options[optpos]; + optsize = sizeof(dhcp_option_t) + option->len; + if (option->type == DHCP_OPTEND || optlen < optsize) + { + break; + } + if (option->type == DHCP_MESSAGE_TYPE && option->len == 1) + { + switch (option->data[0]) + { + case DHCP_OFFER: + handle_offer(this, &packet.dhcp, origoptlen); + break; + case DHCP_ACK: + handle_ack(this, &packet.dhcp, origoptlen); + default: + break; + } + break; + } + optlen -= optsize; + optpos += optsize; + } + } + return JOB_REQUEUE_DIRECT; +} + +METHOD(dhcp_socket_t, destroy, void, + private_dhcp_socket_t *this) +{ + if (this->job) + { + this->job->cancel(this->job); + } + while (this->waiting) + { + this->condvar->signal(this->condvar); + } + if (this->send > 0) + { + close(this->send); + } + if (this->receive > 0) + { + close(this->receive); + } + this->mutex->destroy(this->mutex); + this->condvar->destroy(this->condvar); + this->discover->destroy_offset(this->discover, + offsetof(dhcp_transaction_t, destroy)); + this->request->destroy_offset(this->request, + offsetof(dhcp_transaction_t, destroy)); + this->completed->destroy_offset(this->completed, + offsetof(dhcp_transaction_t, destroy)); + DESTROY_IF(this->rng); + DESTROY_IF(this->dst); + free(this); +} + +/** + * See header + */ +dhcp_socket_t *dhcp_socket_create() +{ + private_dhcp_socket_t *this; + struct sockaddr_in src; + int on = 1; + struct sock_filter dhcp_filter_code[] = { + BPF_STMT(BPF_LD+BPF_B+BPF_ABS, + offsetof(struct iphdr, protocol)), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, IPPROTO_UDP, 0, 16), + BPF_STMT(BPF_LD+BPF_H+BPF_ABS, sizeof(struct iphdr) + + offsetof(struct udphdr, source)), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, DHCP_SERVER_PORT, 0, 14), + BPF_STMT(BPF_LD+BPF_H+BPF_ABS, sizeof(struct iphdr) + + offsetof(struct udphdr, dest)), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, DHCP_CLIENT_PORT, 0, 2), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, DHCP_SERVER_PORT, 0, 1), + BPF_JUMP(BPF_JMP+BPF_JA, 0, 0, 10), + BPF_STMT(BPF_LD+BPF_B+BPF_ABS, sizeof(struct iphdr) + + sizeof(struct udphdr) + offsetof(dhcp_t, opcode)), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, BOOTREPLY, 0, 8), + BPF_STMT(BPF_LD+BPF_B+BPF_ABS, sizeof(struct iphdr) + + sizeof(struct udphdr) + offsetof(dhcp_t, hw_type)), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ARPHRD_ETHER, 0, 6), + BPF_STMT(BPF_LD+BPF_B+BPF_ABS, sizeof(struct iphdr) + + sizeof(struct udphdr) + offsetof(dhcp_t, hw_addr_len)), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 6, 0, 4), + BPF_STMT(BPF_LD+BPF_W+BPF_ABS, sizeof(struct iphdr) + + sizeof(struct udphdr) + offsetof(dhcp_t, magic_cookie)), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x63825363, 0, 2), + BPF_STMT(BPF_LD+BPF_W+BPF_LEN, 0), + BPF_STMT(BPF_RET+BPF_A, 0), + BPF_STMT(BPF_RET+BPF_K, 0), + }; + struct sock_fprog dhcp_filter = { + sizeof(dhcp_filter_code) / sizeof(struct sock_filter), + dhcp_filter_code, + }; + + INIT(this, + .public = { + .enroll = _enroll, + .release = _release, + .destroy = _destroy, + }, + .rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK), + .mutex = mutex_create(MUTEX_TYPE_DEFAULT), + .condvar = condvar_create(CONDVAR_TYPE_DEFAULT), + .discover = linked_list_create(), + .request = linked_list_create(), + .completed = linked_list_create(), + ); + + if (!this->rng) + { + DBG1(DBG_CFG, "unable to create RNG"); + destroy(this); + return NULL; + } + this->identity_lease = lib->settings->get_bool(lib->settings, + "charon.plugins.dhcp.identity_lease", FALSE); + this->dst = host_create_from_string(lib->settings->get_str(lib->settings, + "charon.plugins.dhcp.server", "255.255.255.255"), + DHCP_SERVER_PORT); + if (!this->dst) + { + DBG1(DBG_CFG, "configured DHCP server address invalid"); + destroy(this); + return NULL; + } + + this->send = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); + if (this->send == -1) + { + DBG1(DBG_CFG, "unable to create DHCP send socket: %s", strerror(errno)); + destroy(this); + return NULL; + } + if (setsockopt(this->send, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) == -1) + { + DBG1(DBG_CFG, "unable to reuse DHCP socket address: %s", strerror(errno)); + destroy(this); + return NULL; + } + if (setsockopt(this->send, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on)) == -1) + { + DBG1(DBG_CFG, "unable to broadcast on DHCP socket: %s", strerror(errno)); + destroy(this); + return NULL; + } + src.sin_family = AF_INET; + src.sin_port = htons(DHCP_CLIENT_PORT); + src.sin_addr.s_addr = INADDR_ANY; + if (bind(this->send, (struct sockaddr*)&src, sizeof(src)) == -1) + { + DBG1(DBG_CFG, "unable to bind DHCP send socket: %s", strerror(errno)); + destroy(this); + return NULL; + } + + this->receive = socket(AF_PACKET, SOCK_DGRAM, htons(ETH_P_IP)); + if (this->receive == -1) + { + DBG1(DBG_NET, "opening DHCP receive socket failed: %s", strerror(errno)); + destroy(this); + return NULL; + } + if (setsockopt(this->receive, SOL_SOCKET, SO_ATTACH_FILTER, + &dhcp_filter, sizeof(dhcp_filter)) < 0) + { + DBG1(DBG_CFG, "installing DHCP socket filter failed: %s", + strerror(errno)); + destroy(this); + return NULL; + } + + this->job = callback_job_create((callback_job_cb_t)receive_dhcp, + this, NULL, NULL); + charon->processor->queue_job(charon->processor, (job_t*)this->job); + + return &this->public; +} + diff --git a/src/libcharon/plugins/dhcp/dhcp_socket.h b/src/libcharon/plugins/dhcp/dhcp_socket.h new file mode 100644 index 000000000..0a8398aba --- /dev/null +++ b/src/libcharon/plugins/dhcp/dhcp_socket.h @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup dhcp_socket dhcp_socket + * @{ @ingroup dhcp + */ + +#ifndef DHCP_SOCKET_H_ +#define DHCP_SOCKET_H_ + +typedef struct dhcp_socket_t dhcp_socket_t; + +#include "dhcp_transaction.h" + +/** + * DHCP socket implementation + */ +struct dhcp_socket_t { + + /** + * Enroll a client address using DHCP. + * + * @param identity peer identity to enroll an address for + * @return completed DHCP transaction, NULL on failure + */ + dhcp_transaction_t* (*enroll)(dhcp_socket_t *this, + identification_t *identity); + + /** + * Release an enrolled DHCP address. + * + * @param transaction transaction returned by enroll + */ + void (*release)(dhcp_socket_t *this, dhcp_transaction_t *transaction); + + /** + * Destroy a dhcp_socket_t. + */ + void (*destroy)(dhcp_socket_t *this); +}; + +/** + * Create a dhcp_socket instance. + */ +dhcp_socket_t *dhcp_socket_create(); + +#endif /** DHCP_SOCKET_H_ @}*/ diff --git a/src/libcharon/plugins/dhcp/dhcp_transaction.c b/src/libcharon/plugins/dhcp/dhcp_transaction.c new file mode 100644 index 000000000..83f822dd8 --- /dev/null +++ b/src/libcharon/plugins/dhcp/dhcp_transaction.c @@ -0,0 +1,184 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "dhcp_transaction.h" + +#include <utils/linked_list.h> + +typedef struct private_dhcp_transaction_t private_dhcp_transaction_t; + +/** + * Private data of an dhcp_transaction_t object. + */ +struct private_dhcp_transaction_t { + + /** + * Public dhcp_transaction_t interface. + */ + dhcp_transaction_t public; + + /** + * DHCP transaction ID + */ + u_int32_t id; + + /** + * Peer identity + */ + identification_t *identity; + + /** + * received DHCP address + */ + host_t *address; + + /** + * discovered DHCP server address + */ + host_t *server; + + /** + * List of added attributes, as attribute_entry_t + */ + linked_list_t *attributes; +}; + +/** + * Entry for an added attribute + */ +typedef struct { + configuration_attribute_type_t type; + chunk_t data; +} attribute_entry_t; + +METHOD(dhcp_transaction_t, get_id, u_int32_t, + private_dhcp_transaction_t *this) +{ + return this->id; +} + +METHOD(dhcp_transaction_t, get_identity, identification_t*, + private_dhcp_transaction_t *this) +{ + return this->identity; +} + +METHOD(dhcp_transaction_t, set_address, void, + private_dhcp_transaction_t *this, host_t *address) +{ + DESTROY_IF(this->address); + this->address = address; +} + +METHOD(dhcp_transaction_t, get_address, host_t*, + private_dhcp_transaction_t *this) +{ + return this->address; +} + +METHOD(dhcp_transaction_t, set_server, void, + private_dhcp_transaction_t *this, host_t *server) +{ + DESTROY_IF(this->server); + this->server = server; +} + +METHOD(dhcp_transaction_t, get_server, host_t*, + private_dhcp_transaction_t *this) +{ + return this->server; +} + +METHOD(dhcp_transaction_t, add_attribute, void, + private_dhcp_transaction_t *this, configuration_attribute_type_t type, + chunk_t data) +{ + attribute_entry_t *entry; + + INIT(entry, + .type = type, + .data = chunk_clone(data), + ); + this->attributes->insert_last(this->attributes, entry); +} + +/** + * Filter function to map entries to type/data + */ +static bool attribute_filter(void *null, attribute_entry_t **entry, + configuration_attribute_type_t *type, + void **dummy, chunk_t *data) +{ + *type = (*entry)->type; + *data = (*entry)->data; + return TRUE; +} + +METHOD(dhcp_transaction_t, create_attribute_enumerator, enumerator_t*, + private_dhcp_transaction_t *this) +{ + return enumerator_create_filter( + this->attributes->create_enumerator(this->attributes), + (void*)attribute_filter, NULL, NULL); +} + +/** + * Clean up an attribute entry + */ +static void attribute_entry_destroy(attribute_entry_t *entry) +{ + free(entry->data.ptr); + free(entry); +} + +METHOD(dhcp_transaction_t, destroy, void, + private_dhcp_transaction_t *this) +{ + this->identity->destroy(this->identity); + DESTROY_IF(this->address); + DESTROY_IF(this->server); + this->attributes->destroy_function(this->attributes, + (void*)attribute_entry_destroy); + free(this); +} + +/** + * See header + */ +dhcp_transaction_t *dhcp_transaction_create(u_int32_t id, + identification_t *identity) +{ + private_dhcp_transaction_t *this; + + INIT(this, + .public = { + .get_id = _get_id, + .get_identity = _get_identity, + .set_address = _set_address, + .get_address = _get_address, + .set_server = _set_server, + .get_server = _get_server, + .add_attribute = _add_attribute, + .create_attribute_enumerator = _create_attribute_enumerator, + .destroy = _destroy, + }, + .id = id, + .identity = identity->clone(identity), + .attributes = linked_list_create(), + ); + + return &this->public; +} + diff --git a/src/libcharon/plugins/dhcp/dhcp_transaction.h b/src/libcharon/plugins/dhcp/dhcp_transaction.h new file mode 100644 index 000000000..19c163f88 --- /dev/null +++ b/src/libcharon/plugins/dhcp/dhcp_transaction.h @@ -0,0 +1,109 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup dhcp_transaction dhcp_transaction + * @{ @ingroup dhcp + */ + +#ifndef DHCP_TRANSACTION_H_ +#define DHCP_TRANSACTION_H_ + +#include <utils/host.h> +#include <utils/identification.h> +#include <attributes/attributes.h> + +typedef struct dhcp_transaction_t dhcp_transaction_t; + +/** + * DHCP transaction class. + */ +struct dhcp_transaction_t { + + /** + * Get the DCHP transaction ID. + * + * @return DHCP transaction identifier + */ + u_int32_t (*get_id)(dhcp_transaction_t *this); + + /** + * Get the peer identity this transaction is used for. + * + * @return peer Identity + */ + identification_t* (*get_identity)(dhcp_transaction_t *this); + + /** + * Set the DHCP address received using this transaction. + * + * @param host received DHCP address + */ + void (*set_address)(dhcp_transaction_t *this, host_t *address); + + /** + * Get the DHCP address received using this transaction. + * + * @return received DHCP address + */ + host_t* (*get_address)(dhcp_transaction_t *this); + + /** + * Set the DCHP server address discovered. + * + * @param server DHCP server address + */ + void (*set_server)(dhcp_transaction_t *this, host_t *server); + + /** + * Get the DHCP server address. + * + * @return DHCP server address + */ + host_t* (*get_server)(dhcp_transaction_t *this); + + /** + * An an additional attribute to serve to peer. + * + * @param type type of attribute + * @param data attribute data + */ + void (*add_attribute)(dhcp_transaction_t *this, + configuration_attribute_type_t type, chunk_t data); + + /** + * Create an enumerator over added attributes. + * + * @return enumerator over (configuration_attribute_t, chunk_t) + */ + enumerator_t* (*create_attribute_enumerator)(dhcp_transaction_t *this); + + /** + * Destroy a dhcp_transaction_t. + */ + void (*destroy)(dhcp_transaction_t *this); +}; + +/** + * Create a dhcp_transaction instance. + * + * @param id DHCP transaction identifier + * @param identity peer identity this transaction is used for + * @return transaction instance + */ +dhcp_transaction_t *dhcp_transaction_create(u_int32_t id, + identification_t *identity); + +#endif /** DHCP_TRANSACTION_H_ @}*/ diff --git a/src/libcharon/plugins/eap_aka/Makefile.am b/src/libcharon/plugins/eap_aka/Makefile.am new file mode 100644 index 000000000..d37d1691c --- /dev/null +++ b/src/libcharon/plugins/eap_aka/Makefile.am @@ -0,0 +1,19 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon -I$(top_srcdir)/src/libsimaka + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-eap-aka.la +else +plugin_LTLIBRARIES = libstrongswan-eap-aka.la +libstrongswan_eap_aka_la_LIBADD = $(top_builddir)/src/libsimaka/libsimaka.la +endif + +libstrongswan_eap_aka_la_SOURCES = \ + eap_aka_plugin.h eap_aka_plugin.c \ + eap_aka_peer.h eap_aka_peer.c \ + eap_aka_server.h eap_aka_server.c + +libstrongswan_eap_aka_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/eap_aka/Makefile.in b/src/libcharon/plugins/eap_aka/Makefile.in new file mode 100644 index 000000000..1cea81a9b --- /dev/null +++ b/src/libcharon/plugins/eap_aka/Makefile.in @@ -0,0 +1,593 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = 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000000000..26546809d --- /dev/null +++ b/src/libcharon/plugins/eap_aka/eap_aka_peer.c @@ -0,0 +1,583 @@ +/* + * Copyright (C) 2006-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_aka_peer.h" + +#include <library.h> +#include <daemon.h> + +#include <simaka_message.h> +#include <simaka_crypto.h> + +typedef struct private_eap_aka_peer_t private_eap_aka_peer_t; + +/** + * Private data of an eap_aka_peer_t object. + */ +struct private_eap_aka_peer_t { + + /** + * Public authenticator_t interface. + */ + eap_aka_peer_t public; + + /** + * EAP-AKA crypto helper + */ + simaka_crypto_t *crypto; + + /** + * permanent ID of peer + */ + identification_t *permanent; + + /** + * Pseudonym identity the peer uses + */ + identification_t *pseudonym; + + /** + * Reauthentication identity the peer uses + */ + identification_t *reauth; + + /** + * MSK + */ + chunk_t msk; + + /** + * Master key, if reauthentication is used + */ + char mk[HASH_SIZE_SHA1]; + + /** + * Counter value if reauthentication is used + */ + u_int16_t counter; +}; + +/** + * Create a AKA_CLIENT_ERROR: "Unable to process" + */ +static eap_payload_t* create_client_error(private_eap_aka_peer_t *this, + u_int8_t identifier) +{ + simaka_message_t *message; + eap_payload_t *out; + u_int16_t encoded; + + DBG1(DBG_IKE, "sending client error '%N'", + simaka_client_error_names, AKA_UNABLE_TO_PROCESS); + + message = simaka_message_create(FALSE, identifier, EAP_AKA, + AKA_CLIENT_ERROR, this->crypto); + encoded = htons(AKA_UNABLE_TO_PROCESS); + message->add_attribute(message, AT_CLIENT_ERROR_CODE, + chunk_create((char*)&encoded, sizeof(encoded))); + out = message->generate(message, chunk_empty); + message->destroy(message); + return out; +} + +/** + * process an EAP-AKA/Request/Identity message + */ +static status_t process_identity(private_eap_aka_peer_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + simaka_message_t *message; + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data, id = chunk_empty; + simaka_attribute_t id_req = 0; + + /* reset previously uses reauthentication/pseudonym data */ + this->crypto->clear_keys(this->crypto); + DESTROY_IF(this->pseudonym); + this->pseudonym = NULL; + DESTROY_IF(this->reauth); + this->reauth = NULL; + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_ANY_ID_REQ: + case AT_FULLAUTH_ID_REQ: + case AT_PERMANENT_ID_REQ: + id_req = type; + break; + default: + if (!simaka_attribute_skippable(type)) + { + *out = create_client_error(this, in->get_identifier(in)); + enumerator->destroy(enumerator); + return NEED_MORE; + } + break; + } + } + enumerator->destroy(enumerator); + + switch (id_req) + { + case AT_ANY_ID_REQ: + this->reauth = charon->sim->card_get_reauth(charon->sim, + this->permanent, this->mk, &this->counter); + if (this->reauth) + { + id = this->reauth->get_encoding(this->reauth); + break; + } + /* FALL */ + case AT_FULLAUTH_ID_REQ: + this->pseudonym = charon->sim->card_get_pseudonym(charon->sim, + this->permanent); + if (this->pseudonym) + { + id = this->pseudonym->get_encoding(this->pseudonym); + break; + } + /* FALL */ + case AT_PERMANENT_ID_REQ: + id = this->permanent->get_encoding(this->permanent); + break; + default: + break; + } + message = simaka_message_create(FALSE, in->get_identifier(in), EAP_AKA, + AKA_IDENTITY, this->crypto); + if (id.len) + { + message->add_attribute(message, AT_IDENTITY, id); + } + *out = message->generate(message, chunk_empty); + message->destroy(message); + + return NEED_MORE; +} + +/** + * Process an EAP-AKA/Request/Challenge message + */ +static status_t process_challenge(private_eap_aka_peer_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + simaka_message_t *message; + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data, rand = chunk_empty, autn = chunk_empty, mk; + u_char res[AKA_RES_MAX], ck[AKA_CK_LEN], ik[AKA_IK_LEN], auts[AKA_AUTS_LEN]; + int res_len; + identification_t *id; + status_t status; + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_RAND: + rand = data; + break; + case AT_AUTN: + autn = data; + break; + default: + if (!simaka_attribute_skippable(type)) + { + *out = create_client_error(this, in->get_identifier(in)); + enumerator->destroy(enumerator); + return NEED_MORE; + } + break; + } + } + enumerator->destroy(enumerator); + + if (!rand.len || !autn.len) + { + DBG1(DBG_IKE, "received invalid EAP-AKA challenge message"); + *out = create_client_error(this, in->get_identifier(in)); + return NEED_MORE; + } + + status = charon->sim->card_get_quintuplet(charon->sim, this->permanent, + rand.ptr, autn.ptr, ck, ik, res, &res_len); + if (status == INVALID_STATE && + charon->sim->card_resync(charon->sim, this->permanent, rand.ptr, auts)) + { + DBG1(DBG_IKE, "received SQN invalid, sending %N", + simaka_subtype_names, AKA_SYNCHRONIZATION_FAILURE); + message = simaka_message_create(FALSE, in->get_identifier(in), EAP_AKA, + AKA_SYNCHRONIZATION_FAILURE, this->crypto); + message->add_attribute(message, AT_AUTS, + chunk_create(auts, AKA_AUTS_LEN)); + *out = message->generate(message, chunk_empty); + message->destroy(message); + return NEED_MORE; + } + if (status != SUCCESS) + { + DBG1(DBG_IKE, "no USIM found with quintuplets for '%Y', sending %N", + this->permanent, simaka_subtype_names, AKA_AUTHENTICATION_REJECT); + message = simaka_message_create(FALSE, in->get_identifier(in), EAP_AKA, + AKA_AUTHENTICATION_REJECT, this->crypto); + *out = message->generate(message, chunk_empty); + message->destroy(message); + return NEED_MORE; + } + + id = this->permanent; + if (this->pseudonym) + { + id = this->pseudonym; + } + data = chunk_cata("cc", chunk_create(ik, AKA_IK_LEN), + chunk_create(ck, AKA_CK_LEN)); + free(this->msk.ptr); + this->msk = this->crypto->derive_keys_full(this->crypto, id, data, &mk); + memcpy(this->mk, mk.ptr, mk.len); + free(mk.ptr); + + /* Verify AT_MAC attribute and parse() again after key derivation, + * reading encrypted attributes */ + if (!in->verify(in, chunk_empty) || !in->parse(in)) + { + *out = create_client_error(this, in->get_identifier(in)); + return NEED_MORE; + } + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_NEXT_REAUTH_ID: + this->counter = 0; + id = identification_create_from_data(data); + charon->sim->card_set_reauth(charon->sim, this->permanent, id, + this->mk, this->counter); + id->destroy(id); + break; + case AT_NEXT_PSEUDONYM: + id = identification_create_from_data(data); + charon->sim->card_set_pseudonym(charon->sim, this->permanent, id); + id->destroy(id); + break; + default: + break; + } + } + enumerator->destroy(enumerator); + + message = simaka_message_create(FALSE, in->get_identifier(in), EAP_AKA, + AKA_CHALLENGE, this->crypto); + message->add_attribute(message, AT_RES, chunk_create(res, res_len)); + *out = message->generate(message, chunk_empty); + message->destroy(message); + return NEED_MORE; +} + +/** + * Check if a received counter value is acceptable + */ +static bool counter_too_small(private_eap_aka_peer_t *this, chunk_t chunk) +{ + u_int16_t counter; + + memcpy(&counter, chunk.ptr, sizeof(counter)); + counter = htons(counter); + return counter < this->counter; +} + +/** + * process an EAP-AKA/Request/Reauthentication message + */ +static status_t process_reauthentication(private_eap_aka_peer_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + simaka_message_t *message; + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data, counter = chunk_empty, nonce = chunk_empty, id = chunk_empty; + + if (!this->reauth) + { + DBG1(DBG_IKE, "received %N, but not expected", + simaka_subtype_names, AKA_REAUTHENTICATION); + *out = create_client_error(this, in->get_identifier(in)); + return NEED_MORE; + } + + this->crypto->derive_keys_reauth(this->crypto, + chunk_create(this->mk, HASH_SIZE_SHA1)); + + /* verify MAC and parse again with decryption key */ + if (!in->verify(in, chunk_empty) || !in->parse(in)) + { + *out = create_client_error(this, in->get_identifier(in)); + return NEED_MORE; + } + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_COUNTER: + counter = data; + break; + case AT_NONCE_S: + nonce = data; + break; + case AT_NEXT_REAUTH_ID: + id = data; + break; + default: + if (!simaka_attribute_skippable(type)) + { + *out = create_client_error(this, in->get_identifier(in)); + enumerator->destroy(enumerator); + return NEED_MORE; + } + break; + } + } + enumerator->destroy(enumerator); + + if (!nonce.len || !counter.len) + { + DBG1(DBG_IKE, "EAP-AKA/Request/Reauthentication message incomplete"); + *out = create_client_error(this, in->get_identifier(in)); + return NEED_MORE; + } + + message = simaka_message_create(FALSE, in->get_identifier(in), EAP_AKA, + AKA_REAUTHENTICATION, this->crypto); + if (counter_too_small(this, counter)) + { + DBG1(DBG_IKE, "reauthentication counter too small"); + message->add_attribute(message, AT_COUNTER_TOO_SMALL, chunk_empty); + } + else + { + free(this->msk.ptr); + this->msk = this->crypto->derive_keys_reauth_msk(this->crypto, + this->reauth, counter, nonce, + chunk_create(this->mk, HASH_SIZE_SHA1)); + if (id.len) + { + identification_t *reauth; + + reauth = identification_create_from_data(data); + charon->sim->card_set_reauth(charon->sim, this->permanent, reauth, + this->mk, this->counter); + reauth->destroy(reauth); + } + } + message->add_attribute(message, AT_COUNTER, counter); + *out = message->generate(message, nonce); + message->destroy(message); + return NEED_MORE; +} + +/** + * Process an EAP-AKA/Request/Notification message + */ +static status_t process_notification(private_eap_aka_peer_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + simaka_message_t *message; + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data; + bool success = TRUE; + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + if (type == AT_NOTIFICATION) + { + u_int16_t code; + + memcpy(&code, data.ptr, sizeof(code)); + code = ntohs(code); + + /* test success bit */ + if (!(data.ptr[0] & 0x80)) + { + success = FALSE; + DBG1(DBG_IKE, "received EAP-AKA notification error '%N'", + simaka_notification_names, code); + } + else + { + DBG1(DBG_IKE, "received EAP-AKA notification '%N'", + simaka_notification_names, code); + } + } + else if (!simaka_attribute_skippable(type)) + { + success = FALSE; + break; + } + } + enumerator->destroy(enumerator); + + if (success) + { /* empty notification reply */ + message = simaka_message_create(FALSE, in->get_identifier(in), EAP_AKA, + AKA_NOTIFICATION, this->crypto); + *out = message->generate(message, chunk_empty); + message->destroy(message); + } + else + { + *out = create_client_error(this, in->get_identifier(in)); + } + return NEED_MORE; +} + + +/** + * Implementation of eap_method_t.process + */ +static status_t process(private_eap_aka_peer_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + simaka_message_t *message; + status_t status; + + message = simaka_message_create_from_payload(in, this->crypto); + if (!message) + { + *out = create_client_error(this, in->get_identifier(in)); + return NEED_MORE; + } + if (!message->parse(message)) + { + message->destroy(message); + *out = create_client_error(this, in->get_identifier(in)); + return NEED_MORE; + } + switch (message->get_subtype(message)) + { + case AKA_IDENTITY: + status = process_identity(this, message, out); + break; + case AKA_CHALLENGE: + status = process_challenge(this, message, out); + break; + case AKA_REAUTHENTICATION: + status = process_reauthentication(this, message, out); + break; + case AKA_NOTIFICATION: + status = process_notification(this, message, out); + break; + default: + DBG1(DBG_IKE, "unable to process EAP-AKA subtype %N", + simaka_subtype_names, message->get_subtype(message)); + *out = create_client_error(this, in->get_identifier(in)); + status = NEED_MORE; + break; + } + message->destroy(message); + return status; +} + +/** + * Implementation of eap_method_t.initiate + */ +static status_t initiate(private_eap_aka_peer_t *this, eap_payload_t **out) +{ + /* peer never initiates */ + return FAILED; +} + +/** + * Implementation of eap_method_t.get_type. + */ +static eap_type_t get_type(private_eap_aka_peer_t *this, u_int32_t *vendor) +{ + *vendor = 0; + return EAP_AKA; +} + +/** + * Implementation of eap_method_t.get_msk. + */ +static status_t get_msk(private_eap_aka_peer_t *this, chunk_t *msk) +{ + if (this->msk.ptr) + { + *msk = this->msk; + return SUCCESS; + } + return FAILED; +} + +/** + * Implementation of eap_method_t.is_mutual. + */ +static bool is_mutual(private_eap_aka_peer_t *this) +{ + return TRUE; +} + +/** + * Implementation of eap_method_t.destroy. + */ +static void destroy(private_eap_aka_peer_t *this) +{ + this->crypto->destroy(this->crypto); + this->permanent->destroy(this->permanent); + DESTROY_IF(this->pseudonym); + DESTROY_IF(this->reauth); + free(this->msk.ptr); + free(this); +} + +/* + * Described in header. + */ +eap_aka_peer_t *eap_aka_peer_create(identification_t *server, + identification_t *peer) +{ + private_eap_aka_peer_t *this = malloc_thing(private_eap_aka_peer_t); + + this->public.interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate; + this->public.interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process; + this->public.interface.get_type = (eap_type_t(*)(eap_method_t*,u_int32_t*))get_type; + this->public.interface.is_mutual = (bool(*)(eap_method_t*))is_mutual; + this->public.interface.get_msk = (status_t(*)(eap_method_t*,chunk_t*))get_msk; + this->public.interface.destroy = (void(*)(eap_method_t*))destroy; + + this->crypto = simaka_crypto_create(); + if (!this->crypto) + { + free(this); + return NULL; + } + this->permanent = peer->clone(peer); + this->pseudonym = NULL; + this->reauth = NULL; + this->msk = chunk_empty; + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_aka/eap_aka_peer.h b/src/libcharon/plugins/eap_aka/eap_aka_peer.h new file mode 100644 index 000000000..65a210406 --- /dev/null +++ b/src/libcharon/plugins/eap_aka/eap_aka_peer.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_aka_peer eap_aka_peer + * @{ @ingroup eap_aka + */ + +#ifndef EAP_AKA_PEER_H_ +#define EAP_AKA_PEER_H_ + +typedef struct eap_aka_peer_t eap_aka_peer_t; + +#include <sa/authenticators/eap/eap_method.h> + +/** + * Implementation of the eap_method_t interface using EAP-AKA as a client. + */ +struct eap_aka_peer_t { + + /** + * Implemented eap_method_t interface. + */ + eap_method_t interface; +}; + +/** + * Creates the peer implementation of the EAP method EAP-AKA. + * + * @param server ID of the EAP server + * @param peer ID of the EAP client + * @return eap_aka_peer_t object + */ +eap_aka_peer_t *eap_aka_peer_create(identification_t *server, + identification_t *peer); + +#endif /** EAP_AKA_PEER_H_ @}*/ diff --git a/src/libcharon/plugins/eap_aka/eap_aka_plugin.c b/src/libcharon/plugins/eap_aka/eap_aka_plugin.c new file mode 100644 index 000000000..f9283393a --- /dev/null +++ b/src/libcharon/plugins/eap_aka/eap_aka_plugin.c @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_aka_plugin.h" + +#include "eap_aka_peer.h" +#include "eap_aka_server.h" + +#include <daemon.h> + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(eap_aka_plugin_t *this) +{ + charon->eap->remove_method(charon->eap, + (eap_constructor_t)eap_aka_server_create); + charon->eap->remove_method(charon->eap, + (eap_constructor_t)eap_aka_peer_create); + free(this); +} + +/* + * see header file + */ +plugin_t *eap_aka_plugin_create() +{ + eap_aka_plugin_t *this = malloc_thing(eap_aka_plugin_t); + + this->plugin.destroy = (void(*)(plugin_t*))destroy; + + charon->eap->add_method(charon->eap, EAP_AKA, 0, EAP_SERVER, + (eap_constructor_t)eap_aka_server_create); + charon->eap->add_method(charon->eap, EAP_AKA, 0, EAP_PEER, + (eap_constructor_t)eap_aka_peer_create); + + return &this->plugin; +} + diff --git a/src/libcharon/plugins/eap_aka/eap_aka_plugin.h b/src/libcharon/plugins/eap_aka/eap_aka_plugin.h new file mode 100644 index 000000000..d011904b3 --- /dev/null +++ b/src/libcharon/plugins/eap_aka/eap_aka_plugin.h @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_aka eap_aka + * @ingroup cplugins + * + * @defgroup eap_aka_plugin eap_aka_plugin + * @{ @ingroup eap_aka + */ + +#ifndef EAP_AKA_PLUGIN_H_ +#define EAP_AKA_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct eap_aka_plugin_t eap_aka_plugin_t; + +/** + * EAP-AKA plugin. + * + * EAP-AKA uses 3rd generation mobile phone standard authentication + * mechanism for authentication, as defined RFC4187. + */ +struct eap_aka_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** EAP_AKA_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/eap_aka/eap_aka_server.c b/src/libcharon/plugins/eap_aka/eap_aka_server.c new file mode 100644 index 000000000..9baff3e23 --- /dev/null +++ b/src/libcharon/plugins/eap_aka/eap_aka_server.c @@ -0,0 +1,700 @@ +/* + * Copyright (C) 2006-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_aka_server.h" + +#include <daemon.h> +#include <library.h> + +#include <simaka_message.h> +#include <simaka_crypto.h> + +/** length of the AT_NONCE_S value */ +#define NONCE_LEN 16 + +typedef struct private_eap_aka_server_t private_eap_aka_server_t; + +/** + * Private data of an eap_aka_server_t object. + */ +struct private_eap_aka_server_t { + + /** + * Public authenticator_t interface. + */ + eap_aka_server_t public; + + /** + * EAP-AKA crypto helper + */ + simaka_crypto_t *crypto; + + /** + * permanent ID of the peer + */ + identification_t *permanent; + + /** + * pseudonym ID of peer + */ + identification_t *pseudonym; + + /** + * reauthentication ID of peer + */ + identification_t *reauth; + + /** + * EAP identifier value + */ + u_int8_t identifier; + + /** + * Expected Result XRES + */ + chunk_t xres; + + /** + * Random value RAND + */ + chunk_t rand; + + /** + * MSK + */ + chunk_t msk; + + /** + * Nonce value used in AT_NONCE_S + */ + chunk_t nonce; + + /** + * Counter value negotiated, network order + */ + chunk_t counter; + + /** + * Do we request fast reauthentication? + */ + bool use_reauth; + + /** + * Do we request pseudonym identities? + */ + bool use_pseudonym; + + /** + * Do we request permanent identities? + */ + bool use_permanent; + + /** + * EAP-AKA message we have initiated + */ + simaka_subtype_t pending; + + /** + * Did the client send a synchronize request? + */ + bool synchronized; +}; + +/** + * Create EAP-AKA/Request/Identity message + */ +static status_t identity(private_eap_aka_server_t *this, eap_payload_t **out) +{ + simaka_message_t *message; + + message = simaka_message_create(TRUE, this->identifier++, EAP_AKA, + AKA_IDENTITY, this->crypto); + if (this->use_reauth) + { + message->add_attribute(message, AT_ANY_ID_REQ, chunk_empty); + } + else if (this->use_pseudonym) + { + message->add_attribute(message, AT_FULLAUTH_ID_REQ, chunk_empty); + } + else if (this->use_permanent) + { + message->add_attribute(message, AT_PERMANENT_ID_REQ, chunk_empty); + } + *out = message->generate(message, chunk_empty); + message->destroy(message); + + this->pending = AKA_IDENTITY; + return NEED_MORE; +} + +/** + * Create EAP-AKA/Request/Challenge message + */ +static status_t challenge(private_eap_aka_server_t *this, eap_payload_t **out) +{ + simaka_message_t *message; + char rand[AKA_RAND_LEN], xres[AKA_RES_MAX]; + char ck[AKA_CK_LEN], ik[AKA_IK_LEN], autn[AKA_AUTN_LEN]; + int xres_len; + chunk_t data, mk; + identification_t *id; + + if (!charon->sim->provider_get_quintuplet(charon->sim, this->permanent, + rand, xres, &xres_len, ck, ik, autn)) + { + if (this->use_pseudonym) + { + /* probably received a pseudonym/reauth id we couldn't map */ + DBG1(DBG_IKE, "failed to map pseudonym/reauth identity '%Y', " + "fallback to permanent identity request", this->permanent); + this->use_pseudonym = FALSE; + DESTROY_IF(this->pseudonym); + this->pseudonym = NULL; + return identity(this, out); + } + return FAILED; + } + id = this->permanent; + if (this->pseudonym) + { + id = this->pseudonym; + } + data = chunk_cata("cc", chunk_create(ik, AKA_IK_LEN), + chunk_create(ck, AKA_CK_LEN)); + free(this->msk.ptr); + this->msk = this->crypto->derive_keys_full(this->crypto, id, data, &mk); + this->rand = chunk_clone(chunk_create(rand, AKA_RAND_LEN)); + this->xres = chunk_clone(chunk_create(xres, xres_len)); + + message = simaka_message_create(TRUE, this->identifier++, EAP_AKA, + AKA_CHALLENGE, this->crypto); + message->add_attribute(message, AT_RAND, this->rand); + message->add_attribute(message, AT_AUTN, chunk_create(autn, AKA_AUTN_LEN)); + id = charon->sim->provider_gen_reauth(charon->sim, this->permanent, mk.ptr); + if (id) + { + message->add_attribute(message, AT_NEXT_REAUTH_ID, + id->get_encoding(id)); + id->destroy(id); + } + else + { + id = charon->sim->provider_gen_pseudonym(charon->sim, this->permanent); + if (id) + { + message->add_attribute(message, AT_NEXT_PSEUDONYM, + id->get_encoding(id)); + id->destroy(id); + } + } + *out = message->generate(message, chunk_empty); + message->destroy(message); + + free(mk.ptr); + this->pending = AKA_CHALLENGE; + return NEED_MORE; +} + +/** + * Initiate EAP-AKA/Request/Re-authentication message + */ +static status_t reauthenticate(private_eap_aka_server_t *this, + char mk[HASH_SIZE_SHA1], u_int16_t counter, + eap_payload_t **out) +{ + simaka_message_t *message; + identification_t *next; + chunk_t mkc; + rng_t *rng; + + DBG1(DBG_IKE, "initiating EAP-AKA reauthentication"); + + rng = this->crypto->get_rng(this->crypto); + rng->allocate_bytes(rng, NONCE_LEN, &this->nonce); + + mkc = chunk_create(mk, HASH_SIZE_SHA1); + counter = htons(counter); + this->counter = chunk_clone(chunk_create((char*)&counter, sizeof(counter))); + + this->crypto->derive_keys_reauth(this->crypto, mkc); + this->msk = this->crypto->derive_keys_reauth_msk(this->crypto, + this->reauth, this->counter, this->nonce, mkc); + + message = simaka_message_create(TRUE, this->identifier++, EAP_AKA, + AKA_REAUTHENTICATION, this->crypto); + message->add_attribute(message, AT_COUNTER, this->counter); + message->add_attribute(message, AT_NONCE_S, this->nonce); + next = charon->sim->provider_gen_reauth(charon->sim, this->permanent, mk); + if (next) + { + message->add_attribute(message, AT_NEXT_REAUTH_ID, + next->get_encoding(next)); + next->destroy(next); + } + *out = message->generate(message, chunk_empty); + message->destroy(message); + + this->pending = SIM_REAUTHENTICATION; + return NEED_MORE; +} + +/** + * Implementation of eap_method_t.initiate + */ +static status_t initiate(private_eap_aka_server_t *this, eap_payload_t **out) +{ + if (this->use_permanent || this->use_pseudonym || this->use_reauth) + { + return identity(this, out); + } + return challenge(this, out); +} + +/** + * Process EAP-AKA/Response/Identity message + */ +static status_t process_identity(private_eap_aka_server_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + identification_t *permanent, *id; + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data, identity = chunk_empty; + + if (this->pending != AKA_IDENTITY) + { + DBG1(DBG_IKE, "received %N, but not expected", + simaka_subtype_names, AKA_IDENTITY); + return FAILED; + } + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_IDENTITY: + identity = data; + break; + default: + if (!simaka_attribute_skippable(type)) + { + enumerator->destroy(enumerator); + return FAILED; + } + break; + } + } + enumerator->destroy(enumerator); + + if (!identity.len) + { + DBG1(DBG_IKE, "received incomplete Identity response"); + return FAILED; + } + + id = identification_create_from_data(identity); + if (this->use_reauth) + { + char mk[HASH_SIZE_SHA1]; + u_int16_t counter; + + permanent = charon->sim->provider_is_reauth(charon->sim, id, + mk, &counter); + if (permanent) + { + this->permanent->destroy(this->permanent); + this->permanent = permanent; + this->reauth = id; + return reauthenticate(this, mk, counter, out); + } + /* unable to map, maybe a pseudonym? */ + DBG1(DBG_IKE, "'%Y' is not a reauth identity", id); + this->use_reauth = FALSE; + } + if (this->use_pseudonym) + { + permanent = charon->sim->provider_is_pseudonym(charon->sim, id); + if (permanent) + { + this->permanent->destroy(this->permanent); + this->permanent = permanent; + this->pseudonym = id->clone(id); + /* we already have a new permanent identity now */ + this->use_permanent = FALSE; + } + else + { + DBG1(DBG_IKE, "'%Y' is not a pseudonym", id); + } + } + if (!this->pseudonym && this->use_permanent) + { + /* got a permanent identity or a pseudonym reauth id wou couldn't map, + * try to get quintuplets */ + DBG1(DBG_IKE, "received identity '%Y'", id); + this->permanent->destroy(this->permanent); + this->permanent = id->clone(id); + } + id->destroy(id); + + return challenge(this, out); +} + +/** + * Process EAP-AKA/Response/Challenge message + */ +static status_t process_challenge(private_eap_aka_server_t *this, + simaka_message_t *in) +{ + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data, res = chunk_empty; + + if (this->pending != AKA_CHALLENGE) + { + DBG1(DBG_IKE, "received %N, but not expected", + simaka_subtype_names, AKA_CHALLENGE); + return FAILED; + } + /* verify MAC of EAP message, AT_MAC */ + if (!in->verify(in, chunk_empty)) + { + return FAILED; + } + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_RES: + res = data; + break; + default: + if (!simaka_attribute_skippable(type)) + { + enumerator->destroy(enumerator); + return FAILED; + } + break; + } + } + enumerator->destroy(enumerator); + + /* compare received RES against stored XRES */ + if (!chunk_equals(res, this->xres)) + { + DBG1(DBG_IKE, "received RES does not match XRES"); + return FAILED; + } + return SUCCESS; +} + +/** + * process an EAP-AKA/Response/Reauthentication message + */ +static status_t process_reauthentication(private_eap_aka_server_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data, counter = chunk_empty; + bool too_small = FALSE; + + if (this->pending != AKA_REAUTHENTICATION) + { + DBG1(DBG_IKE, "received %N, but not expected", + simaka_subtype_names, AKA_REAUTHENTICATION); + return FAILED; + } + /* verify AT_MAC attribute, signature is over "EAP packet | NONCE_S" */ + if (!in->verify(in, this->nonce)) + { + return FAILED; + } + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_COUNTER: + counter = data; + break; + case AT_COUNTER_TOO_SMALL: + too_small = TRUE; + break; + default: + if (!simaka_attribute_skippable(type)) + { + enumerator->destroy(enumerator); + return FAILED; + } + break; + } + } + enumerator->destroy(enumerator); + + if (too_small) + { + DBG1(DBG_IKE, "received %N, initiating full authentication", + simaka_attribute_names, AT_COUNTER_TOO_SMALL); + this->use_reauth = FALSE; + this->crypto->clear_keys(this->crypto); + return challenge(this, out); + } + if (!chunk_equals(counter, this->counter)) + { + DBG1(DBG_IKE, "received counter does not match"); + return FAILED; + } + return SUCCESS; +} + +/** + * Process EAP-AKA/Response/SynchronizationFailure message + */ +static status_t process_synchronize(private_eap_aka_server_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data, auts = chunk_empty; + + if (this->synchronized) + { + DBG1(DBG_IKE, "received %N, but peer did already resynchronize", + simaka_subtype_names, AKA_SYNCHRONIZATION_FAILURE); + return FAILED; + } + + DBG1(DBG_IKE, "received synchronization request, retrying..."); + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_AUTS: + auts = data; + break; + default: + if (!simaka_attribute_skippable(type)) + { + enumerator->destroy(enumerator); + return FAILED; + } + break; + } + } + enumerator->destroy(enumerator); + + if (!auts.len) + { + DBG1(DBG_IKE, "synchronization request didn't contain usable AUTS"); + return FAILED; + } + + if (!charon->sim->provider_resync(charon->sim, this->permanent, + this->rand.ptr, auts.ptr)) + { + DBG1(DBG_IKE, "no AKA provider found supporting " + "resynchronization for '%Y'", this->permanent); + return FAILED; + } + this->synchronized = TRUE; + return challenge(this, out); +} + +/** + * Process EAP-AKA/Response/ClientErrorCode message + */ +static status_t process_client_error(private_eap_aka_server_t *this, + simaka_message_t *in) +{ + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data; + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + if (type == AT_CLIENT_ERROR_CODE) + { + u_int16_t code; + + memcpy(&code, data.ptr, sizeof(code)); + DBG1(DBG_IKE, "received EAP-AKA client error '%N'", + simaka_client_error_names, ntohs(code)); + } + else if (!simaka_attribute_skippable(type)) + { + break; + } + } + enumerator->destroy(enumerator); + return FAILED; +} + +/** + * Process EAP-AKA/Response/AuthenticationReject message + */ +static status_t process_authentication_reject(private_eap_aka_server_t *this, + simaka_message_t *in) +{ + DBG1(DBG_IKE, "received %N, authentication failed", + simaka_subtype_names, in->get_subtype(in)); + return FAILED; +} + +/** + * Implementation of eap_method_t.process + */ +static status_t process(private_eap_aka_server_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + simaka_message_t *message; + status_t status; + + message = simaka_message_create_from_payload(in, this->crypto); + if (!message) + { + return FAILED; + } + if (!message->parse(message)) + { + message->destroy(message); + return FAILED; + } + switch (message->get_subtype(message)) + { + case AKA_IDENTITY: + status = process_identity(this, message, out); + break; + case AKA_CHALLENGE: + status = process_challenge(this, message); + break; + case AKA_REAUTHENTICATION: + status = process_reauthentication(this, message, out); + break; + case AKA_SYNCHRONIZATION_FAILURE: + status = process_synchronize(this, message, out); + break; + case AKA_CLIENT_ERROR: + status = process_client_error(this, message); + break; + case AKA_AUTHENTICATION_REJECT: + status = process_authentication_reject(this, message); + break; + default: + DBG1(DBG_IKE, "unable to process EAP-AKA subtype %N", + simaka_subtype_names, message->get_subtype(message)); + status = FAILED; + break; + } + message->destroy(message); + return status; +} + +/** + * Implementation of eap_method_t.get_type. + */ +static eap_type_t get_type(private_eap_aka_server_t *this, u_int32_t *vendor) +{ + *vendor = 0; + return EAP_AKA; +} + +/** + * Implementation of eap_method_t.get_msk. + */ +static status_t get_msk(private_eap_aka_server_t *this, chunk_t *msk) +{ + if (this->msk.ptr) + { + *msk = this->msk; + return SUCCESS; + } + return FAILED; +} + +/** + * Implementation of eap_method_t.is_mutual. + */ +static bool is_mutual(private_eap_aka_server_t *this) +{ + return TRUE; +} + +/** + * Implementation of eap_method_t.destroy. + */ +static void destroy(private_eap_aka_server_t *this) +{ + this->crypto->destroy(this->crypto); + this->permanent->destroy(this->permanent); + DESTROY_IF(this->pseudonym); + DESTROY_IF(this->reauth); + free(this->xres.ptr); + free(this->rand.ptr); + free(this->nonce.ptr); + free(this->msk.ptr); + free(this->counter.ptr); + free(this); +} + +/* + * Described in header. + */ +eap_aka_server_t *eap_aka_server_create(identification_t *server, + identification_t *peer) +{ + private_eap_aka_server_t *this = malloc_thing(private_eap_aka_server_t); + + this->public.interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate; + this->public.interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process; + this->public.interface.get_type = (eap_type_t(*)(eap_method_t*,u_int32_t*))get_type; + this->public.interface.is_mutual = (bool(*)(eap_method_t*))is_mutual; + this->public.interface.get_msk = (status_t(*)(eap_method_t*,chunk_t*))get_msk; + this->public.interface.destroy = (void(*)(eap_method_t*))destroy; + + this->crypto = simaka_crypto_create(); + if (!this->crypto) + { + free(this); + return NULL; + } + this->permanent = peer->clone(peer); + this->pseudonym = NULL; + this->reauth = NULL; + this->xres = chunk_empty; + this->rand = chunk_empty; + this->nonce = chunk_empty; + this->msk = chunk_empty; + this->counter = chunk_empty; + this->pending = 0; + this->synchronized = FALSE; + this->use_reauth = this->use_pseudonym = this->use_permanent = + lib->settings->get_bool(lib->settings, + "charon.plugins.eap-aka.request_identity", TRUE); + /* generate a non-zero identifier */ + do { + this->identifier = random(); + } while (!this->identifier); + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_aka/eap_aka_server.h b/src/libcharon/plugins/eap_aka/eap_aka_server.h new file mode 100644 index 000000000..d48fc4c34 --- /dev/null +++ b/src/libcharon/plugins/eap_aka/eap_aka_server.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_aka_server eap_aka_server + * @{ @ingroup eap_aka + */ + +#ifndef EAP_AKA_SERVER_H_ +#define EAP_AKA_SERVER_H_ + +typedef struct eap_aka_server_t eap_aka_server_t; + +#include <sa/authenticators/eap/eap_method.h> + +/** + * Implementation of the eap_method_t interface using EAP-AKA as server. + */ +struct eap_aka_server_t { + + /** + * Implemented eap_method_t interface. + */ + eap_method_t interface; +}; + +/** + * Creates the server implementation of the EAP method EAP-AKA. + * + * @param server ID of the EAP server + * @param peer ID of the EAP client + * @return eap_aka_server_t object + */ +eap_aka_server_t *eap_aka_server_create(identification_t *server, + identification_t *peer); + +#endif /** EAP_AKA_SERVER_H_ @}*/ diff --git a/src/libcharon/plugins/eap_aka_3gpp2/Makefile.am b/src/libcharon/plugins/eap_aka_3gpp2/Makefile.am new file mode 100644 index 000000000..598799e2a --- /dev/null +++ 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b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_card.c @@ -0,0 +1,178 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_aka_3gpp2_card.h" + +#include <daemon.h> + +typedef struct private_eap_aka_3gpp2_card_t private_eap_aka_3gpp2_card_t; + +/** + * Private data of an eap_aka_3gpp2_card_t object. + */ +struct private_eap_aka_3gpp2_card_t { + + /** + * Public eap_aka_3gpp2_card_t interface. + */ + eap_aka_3gpp2_card_t public; + + /** + * AKA functions + */ + eap_aka_3gpp2_functions_t *f; + + /** + * do sequence number checking? + */ + bool seq_check; + + /** + * SQN stored in this pseudo-USIM + */ + char sqn[AKA_SQN_LEN]; +}; + +/** + * Functions from eap_aka_3gpp2_provider.c + */ +bool eap_aka_3gpp2_get_k(identification_t *id, char k[AKA_K_LEN]); +void eap_aka_3gpp2_get_sqn(char sqn[AKA_SQN_LEN], int offset); + +/** + * Implementation of sim_card_t.get_quintuplet + */ +static status_t get_quintuplet(private_eap_aka_3gpp2_card_t *this, + identification_t *id, char rand[AKA_RAND_LEN], + char autn[AKA_AUTN_LEN], char ck[AKA_CK_LEN], + char ik[AKA_IK_LEN], char res[AKA_RES_MAX], + int *res_len) +{ + char *amf, *mac; + char k[AKA_K_LEN], ak[AKA_AK_LEN], sqn[AKA_SQN_LEN], xmac[AKA_MAC_LEN]; + + if (!eap_aka_3gpp2_get_k(id, k)) + { + DBG1(DBG_IKE, "no EAP key found for %Y to authenticate with AKA", id); + return FAILED; + } + + /* AUTN = SQN xor AK | AMF | MAC */ + DBG3(DBG_IKE, "received autn %b", autn, AKA_AUTN_LEN); + DBG3(DBG_IKE, "using K %b", k, AKA_K_LEN); + DBG3(DBG_IKE, "using rand %b", rand, AKA_RAND_LEN); + memcpy(sqn, autn, AKA_SQN_LEN); + amf = autn + AKA_SQN_LEN; + mac = autn + AKA_SQN_LEN + AKA_AMF_LEN; + + /* XOR anonymity key AK into SQN to decrypt it */ + this->f->f5(this->f, k, rand, ak); + DBG3(DBG_IKE, "using ak %b", ak, AKA_AK_LEN); + memxor(sqn, ak, AKA_SQN_LEN); + DBG3(DBG_IKE, "using sqn %b", sqn, AKA_SQN_LEN); + + /* calculate expected MAC and compare against received one */ + this->f->f1(this->f, k, rand, sqn, amf, xmac); + if (!memeq(mac, xmac, AKA_MAC_LEN)) + { + DBG1(DBG_IKE, "received MAC does not match XMAC"); + DBG3(DBG_IKE, "MAC %b\nXMAC %b", mac, AKA_MAC_LEN, xmac, AKA_MAC_LEN); + return FAILED; + } + + if (this->seq_check && memcmp(this->sqn, sqn, AKA_SQN_LEN) >= 0) + { + DBG3(DBG_IKE, "received SQN %b\ncurrent SQN %b", + sqn, AKA_SQN_LEN, this->sqn, AKA_SQN_LEN); + return INVALID_STATE; + } + + /* update stored SQN to the received one */ + memcpy(this->sqn, sqn, AKA_SQN_LEN); + + /* CK/IK */ + this->f->f3(this->f, k, rand, ck); + this->f->f4(this->f, k, rand, ik); + /* calculate RES */ + this->f->f2(this->f, k, rand, res); + *res_len = AKA_RES_MAX; + + return SUCCESS; +} + +/** + * Implementation of sim_card_t.resync + */ +static bool resync(private_eap_aka_3gpp2_card_t *this, identification_t *id, + char rand[AKA_RAND_LEN], char auts[AKA_AUTS_LEN]) +{ + char amf[AKA_AMF_LEN], k[AKA_K_LEN], aks[AKA_AK_LEN], macs[AKA_MAC_LEN]; + + if (!eap_aka_3gpp2_get_k(id, k)) + { + DBG1(DBG_IKE, "no EAP key found for %Y to resync AKA", id); + return FALSE; + } + + /* AMF is set to zero in resync */ + memset(amf, 0, AKA_AMF_LEN); + this->f->f5star(this->f, k, rand, aks); + this->f->f1star(this->f, k, rand, this->sqn, amf, macs); + /* AUTS = SQN xor AKS | MACS */ + memcpy(auts, this->sqn, AKA_SQN_LEN); + memxor(auts, aks, AKA_AK_LEN); + memcpy(auts + AKA_AK_LEN, macs, AKA_MAC_LEN); + + return TRUE; +} + +/** + * Implementation of eap_aka_3gpp2_card_t.destroy. + */ +static void destroy(private_eap_aka_3gpp2_card_t *this) +{ + free(this); +} + +/** + * See header + */ +eap_aka_3gpp2_card_t *eap_aka_3gpp2_card_create(eap_aka_3gpp2_functions_t *f) +{ + private_eap_aka_3gpp2_card_t *this = malloc_thing(private_eap_aka_3gpp2_card_t); + + this->public.card.get_triplet = (bool(*)(sim_card_t*, identification_t *id, char rand[SIM_RAND_LEN], char sres[SIM_SRES_LEN], char kc[SIM_KC_LEN]))return_false; + this->public.card.get_quintuplet = (status_t(*)(sim_card_t*, identification_t *id, char rand[AKA_RAND_LEN], char autn[AKA_AUTN_LEN], char ck[AKA_CK_LEN], char ik[AKA_IK_LEN], char res[AKA_RES_MAX], int *res_len))get_quintuplet; + this->public.card.resync = (bool(*)(sim_card_t*, identification_t *id, char rand[AKA_RAND_LEN], char auts[AKA_AUTS_LEN]))resync; + this->public.card.get_pseudonym = (identification_t*(*)(sim_card_t*, identification_t *id))return_null; + this->public.card.set_pseudonym = (void(*)(sim_card_t*, identification_t *id, identification_t *pseudonym))nop; + this->public.card.get_reauth = (identification_t*(*)(sim_card_t*, identification_t *id, char mk[HASH_SIZE_SHA1], u_int16_t *counter))return_null; + this->public.card.set_reauth = (void(*)(sim_card_t*, identification_t *id, identification_t* next, char mk[HASH_SIZE_SHA1], u_int16_t counter))nop; + this->public.destroy = (void(*)(eap_aka_3gpp2_card_t*))destroy; + + this->f = f; + this->seq_check = lib->settings->get_bool(lib->settings, + "charon.plugins.eap-aka-3gpp2.seq_check", +#ifdef SEQ_CHECK /* handle legacy compile time configuration as default */ + TRUE); +#else /* !SEQ_CHECK */ + FALSE); +#endif /* SEQ_CHECK */ + + eap_aka_3gpp2_get_sqn(this->sqn, 0); + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_card.h b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_card.h new file mode 100644 index 000000000..b95bc52af --- /dev/null +++ b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_card.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_aka_3gpp2_card eap_aka_3gpp2_card + * @{ @ingroup eap_aka_3gpp2 + */ + +#ifndef EAP_AKA_3GPP2_CARD_H_ +#define EAP_AKA_3GPP2_CARD_H_ + +#include "eap_aka_3gpp2_functions.h" + +#include <sa/authenticators/eap/sim_manager.h> + +typedef struct eap_aka_3gpp2_card_t eap_aka_3gpp2_card_t; + +/** + * SIM card implementation using a set of AKA functions. + */ +struct eap_aka_3gpp2_card_t { + + /** + * Implements sim_card_t interface + */ + sim_card_t card; + + /** + * Destroy a eap_aka_3gpp2_card_t. + */ + void (*destroy)(eap_aka_3gpp2_card_t *this); +}; + +/** + * Create a eap_aka_3gpp2_card instance. + * + * @param f AKA functions + */ +eap_aka_3gpp2_card_t *eap_aka_3gpp2_card_create(eap_aka_3gpp2_functions_t *f); + +#endif /** EAP_AKA_3GPP2_CARD_H_ @}*/ diff --git a/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_functions.c b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_functions.c new file mode 100644 index 000000000..1d3d246d1 --- /dev/null +++ b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_functions.c @@ -0,0 +1,394 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_aka_3gpp2_functions.h" + +#include <gmp.h> +#include <limits.h> + +#include <daemon.h> + +typedef struct private_eap_aka_3gpp2_functions_t private_eap_aka_3gpp2_functions_t; + +/** + * Private data of an eap_aka_3gpp2_functions_t object. + */ +struct private_eap_aka_3gpp2_functions_t { + + /** + * Public eap_aka_3gpp2_functions_t interface. + */ + eap_aka_3gpp2_functions_t public; + + /** + * Used keyed SHA1 function, as PRF + */ + prf_t *prf; +}; + +#define AKA_PAYLOAD_LEN 64 + +#define F1 0x42 +#define F1STAR 0x43 +#define F2 0x44 +#define F3 0x45 +#define F4 0x46 +#define F5 0x47 +#define F5STAR 0x48 + +/** Family key, as proposed in S.S0055 */ +static chunk_t fmk = chunk_from_chars(0x41, 0x48, 0x41, 0x47); + +/** + * Binary represnation of the polynom T^160 + T^5 + T^3 + T^2 + 1 + */ +static u_int8_t g[] = { + 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x2d +}; + +/** + * Predefined random bits from the RAND Corporation book + */ +static u_int8_t a[] = { + 0x9d, 0xe9, 0xc9, 0xc8, 0xef, 0xd5, 0x78, 0x11, + 0x48, 0x23, 0x14, 0x01, 0x90, 0x1f, 0x2d, 0x49, + 0x3f, 0x4c, 0x63, 0x65 +}; + +/** + * Predefined random bits from the RAND Corporation book + */ +static u_int8_t b[] = { + 0x75, 0xef, 0xd1, 0x5c, 0x4b, 0x8f, 0x8f, 0x51, + 0x4e, 0xf3, 0xbc, 0xc3, 0x79, 0x4a, 0x76, 0x5e, + 0x7e, 0xec, 0x45, 0xe0 +}; + +/** + * Multiplicate two mpz_t with bits interpreted as polynoms. + */ +static void mpz_mul_poly(mpz_t r, mpz_t a, mpz_t b) +{ + mpz_t bm, rm; + int current = 0, shifted = 0, shift; + + mpz_init_set(bm, b); + mpz_init_set_ui(rm, 0); + /* scan through a, for each found bit: */ + while ((current = mpz_scan1(a, current)) != ULONG_MAX) + { + /* XOR shifted b into r */ + shift = current - shifted; + mpz_mul_2exp(bm, bm, shift); + shifted += shift; + mpz_xor(rm, rm, bm); + current++; + } + + mpz_swap(r, rm); + mpz_clear(rm); + mpz_clear(bm); +} + +/** + * Calculate the sum of a + b interpreted as polynoms. + */ +static void mpz_add_poly(mpz_t res, mpz_t a, mpz_t b) +{ + /* addition of polynominals is just the XOR */ + mpz_xor(res, a, b); +} + +/** + * Calculate the remainder of a/b interpreted as polynoms. + */ +static void mpz_mod_poly(mpz_t r, mpz_t a, mpz_t b) +{ + /* Example: + * a = 10001010 + * b = 00000101 + */ + int a_bit, b_bit, diff; + mpz_t bm, am; + + mpz_init_set(am, a); + mpz_init(bm); + + a_bit = mpz_sizeinbase(a, 2); + b_bit = mpz_sizeinbase(b, 2); + + /* don't do anything if b > a */ + if (a_bit >= b_bit) + { + /* shift b left to align up most signaficant "1" to a: + * a = 10001010 + * b = 10100000 + */ + mpz_mul_2exp(bm, b, a_bit - b_bit); + do + { + /* XOR b into a, this kills the most significant "1": + * a = 00101010 + */ + mpz_xor(am, am, bm); + /* find the next most significant "1" in a, and align up b: + * a = 00101010 + * b = 00101000 + */ + diff = a_bit - mpz_sizeinbase(am, 2); + mpz_div_2exp(bm, bm, diff); + a_bit -= diff; + } + while (b_bit <= mpz_sizeinbase(bm, 2)); + /* While b is not shifted to its original value */ + } + /* after another iteration: + * a = 00000010 + * which is the polynomial modulo + */ + + mpz_swap(r, am); + mpz_clear(am); + mpz_clear(bm); +} + +/** + * Step 3 of the various fx() functions: + * XOR the key into the SHA1 IV + */ +static void step3(prf_t *prf, u_char k[AKA_K_LEN], + u_char payload[AKA_PAYLOAD_LEN], u_int8_t h[HASH_SIZE_SHA1]) +{ + /* use the keyed hasher to build the hash */ + prf->set_key(prf, chunk_create(k, AKA_K_LEN)); + prf->get_bytes(prf, chunk_create(payload, AKA_PAYLOAD_LEN), h); +} + +/** + * Step 4 of the various fx() functions: + * Polynomial whiten calculations + */ +static void step4(u_char x[HASH_SIZE_SHA1]) +{ + mpz_t xm, am, bm, gm; + + mpz_init(xm); + mpz_init(am); + mpz_init(bm); + mpz_init(gm); + + mpz_import(xm, HASH_SIZE_SHA1, 1, 1, 1, 0, x); + mpz_import(am, sizeof(a), 1, 1, 1, 0, a); + mpz_import(bm, sizeof(b), 1, 1, 1, 0, b); + mpz_import(gm, sizeof(g), 1, 1, 1, 0, g); + + mpz_mul_poly(xm, am, xm); + mpz_add_poly(xm, bm, xm); + mpz_mod_poly(xm, xm, gm); + + mpz_export(x, NULL, 1, HASH_SIZE_SHA1, 1, 0, xm); + + mpz_clear(xm); + mpz_clear(am); + mpz_clear(bm); + mpz_clear(gm); +} + +/** + * Calculation function for f2(), f3(), f4() + */ +static void fx(prf_t *prf, u_char f, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char out[AKA_MAC_LEN]) +{ + u_char payload[AKA_PAYLOAD_LEN]; + u_char h[HASH_SIZE_SHA1]; + u_char i; + + for (i = 0; i < 2; i++) + { + memset(payload, 0x5c, AKA_PAYLOAD_LEN); + payload[11] ^= f; + memxor(payload + 12, fmk.ptr, fmk.len); + memxor(payload + 24, rand, AKA_RAND_LEN); + + payload[3] ^= i; + payload[19] ^= i; + payload[35] ^= i; + payload[51] ^= i; + + step3(prf, k, payload, h); + step4(h); + memcpy(out + i * 8, h, 8); + } +} + +/** + * Calculation function of f1() and f1star() + */ +static void f1x(prf_t *prf, u_int8_t f, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char sqn[AKA_SQN_LEN], + u_char amf[AKA_AMF_LEN], u_char mac[AKA_MAC_LEN]) +{ + /* generate MAC = f1(FMK, SQN, RAND, AMF) + * K is loaded into hashers IV; FMK, RAND, SQN, AMF are XORed in a 512-bit + * payload which gets hashed + */ + u_char payload[AKA_PAYLOAD_LEN]; + u_char h[HASH_SIZE_SHA1]; + + memset(payload, 0x5c, AKA_PAYLOAD_LEN); + payload[11] ^= f; + memxor(payload + 12, fmk.ptr, fmk.len); + memxor(payload + 16, rand, AKA_RAND_LEN); + memxor(payload + 34, sqn, AKA_SQN_LEN); + memxor(payload + 42, amf, AKA_AMF_LEN); + + step3(prf, k, payload, h); + step4(h); + memcpy(mac, h, AKA_MAC_LEN); +} + +/** + * Calculation function of f5() and f5star() + */ +static void f5x(prf_t *prf, u_char f, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char ak[AKA_AK_LEN]) +{ + u_char payload[AKA_PAYLOAD_LEN]; + u_char h[HASH_SIZE_SHA1]; + + memset(payload, 0x5c, AKA_PAYLOAD_LEN); + payload[11] ^= f; + memxor(payload + 12, fmk.ptr, fmk.len); + memxor(payload + 16, rand, AKA_RAND_LEN); + + step3(prf, k, payload, h); + step4(h); + memcpy(ak, h, AKA_AK_LEN); +} + +/** + * Calculate MAC from RAND, SQN, AMF using K + */ +static void f1(private_eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char sqn[AKA_SQN_LEN], + u_char amf[AKA_AMF_LEN], u_char mac[AKA_MAC_LEN]) +{ + f1x(this->prf, F1, k, rand, sqn, amf, mac); + DBG3(DBG_IKE, "MAC %b", mac, AKA_MAC_LEN); +} + +/** + * Calculate MACS from RAND, SQN, AMF using K + */ +static void f1star(private_eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char sqn[AKA_SQN_LEN], + u_char amf[AKA_AMF_LEN], u_char macs[AKA_MAC_LEN]) +{ + f1x(this->prf, F1STAR, k, rand, sqn, amf, macs); + DBG3(DBG_IKE, "MACS %b", macs, AKA_MAC_LEN); +} + +/** + * Calculate RES from RAND using K + */ +static void f2(private_eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char res[AKA_RES_MAX]) +{ + fx(this->prf, F2, k, rand, res); + DBG3(DBG_IKE, "RES %b", res, AKA_RES_MAX); +} + +/** + * Calculate CK from RAND using K + */ +static void f3(private_eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char ck[AKA_CK_LEN]) +{ + fx(this->prf, F3, k, rand, ck); + DBG3(DBG_IKE, "CK %b", ck, AKA_CK_LEN); +} + +/** + * Calculate IK from RAND using K + */ +static void f4(private_eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char ik[AKA_IK_LEN]) +{ + fx(this->prf, F4, k, rand, ik); + DBG3(DBG_IKE, "IK %b", ik, AKA_IK_LEN); +} + +/** + * Calculate AK from a RAND using K + */ +static void f5(private_eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char ak[AKA_AK_LEN]) +{ + f5x(this->prf, F5, k, rand, ak); + DBG3(DBG_IKE, "AK %b", ak, AKA_AK_LEN); +} + +/** + * Calculate AKS from a RAND using K + */ +static void f5star(private_eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char aks[AKA_AK_LEN]) +{ + f5x(this->prf, F5STAR, k, rand, aks); + DBG3(DBG_IKE, "AKS %b", aks, AKA_AK_LEN); +} + + +/** + * Implementation of eap_aka_3gpp2_functions_t.destroy. + */ +static void destroy(private_eap_aka_3gpp2_functions_t *this) +{ + this->prf->destroy(this->prf); + free(this); +} + +/** + * See header + */ +eap_aka_3gpp2_functions_t *eap_aka_3gpp2_functions_create() +{ + private_eap_aka_3gpp2_functions_t *this; + + this = malloc_thing(private_eap_aka_3gpp2_functions_t); + + this->public.f1 = (void(*)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], u_char rand[AKA_RAND_LEN], u_char sqn[AKA_SQN_LEN], u_char amf[AKA_AMF_LEN], u_char mac[AKA_MAC_LEN]))f1; + this->public.f1star = (void(*)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], u_char rand[AKA_RAND_LEN], u_char sqn[AKA_SQN_LEN], u_char amf[AKA_AMF_LEN], u_char macs[AKA_MAC_LEN]))f1star; + this->public.f2 = (void(*)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], u_char rand[AKA_RAND_LEN], u_char res[AKA_RES_MAX]))f2; + this->public.f3 = (void(*)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], u_char rand[AKA_RAND_LEN], u_char ck[AKA_CK_LEN]))f3; + this->public.f4 = (void(*)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], u_char rand[AKA_RAND_LEN], u_char ik[AKA_IK_LEN]))f4; + this->public.f5 = (void(*)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], u_char rand[AKA_RAND_LEN], u_char ak[AKA_AK_LEN]))f5; + this->public.f5star = (void(*)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], u_char rand[AKA_RAND_LEN], u_char aks[AKA_AK_LEN]))f5star; + this->public.destroy = (void(*)(eap_aka_3gpp2_functions_t*))destroy; + + this->prf = lib->crypto->create_prf(lib->crypto, PRF_KEYED_SHA1); + if (!this->prf) + { + DBG1(DBG_CFG, "%N not supported, unable to use 3GPP2 algorithm", + pseudo_random_function_names, PRF_KEYED_SHA1); + free(this); + return NULL; + } + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_functions.h b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_functions.h new file mode 100644 index 000000000..95c6da6a9 --- /dev/null +++ b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_functions.h @@ -0,0 +1,125 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_aka_3gpp2_functions eap_aka_3gpp2_functions + * @{ @ingroup eap_aka_3gpp2 + */ + +#ifndef EAP_AKA_3GPP2_FUNCTIONS_H_ +#define EAP_AKA_3GPP2_FUNCTIONS_H_ + +#include <sa/authenticators/eap/sim_manager.h> + +#define AKA_SQN_LEN 6 +#define AKA_K_LEN 16 +#define AKA_MAC_LEN 8 +#define AKA_AK_LEN 6 +#define AKA_AMF_LEN 2 +#define AKA_FMK_LEN 4 + +typedef struct eap_aka_3gpp2_functions_t eap_aka_3gpp2_functions_t; + +/** + * f1-f5(), f1*() and f5*() functions from the 3GPP2 (S.S0055) standard. + */ +struct eap_aka_3gpp2_functions_t { + + /** + * Calculate MAC from RAND, SQN, AMF using K. + * + * @param k secret key K + * @param rand random value rand + * @param sqn sequence number + * @param amf authentication management field + * @param mac buffer receiving mac MAC + */ + void (*f1)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char sqn[AKA_SQN_LEN], + u_char amf[AKA_AMF_LEN], u_char mac[AKA_MAC_LEN]); + + /** + * Calculate MACS from RAND, SQN, AMF using K + * + * @param k secret key K + * @param rand random value RAND + * @param sqn sequence number + * @param amf authentication management field + * @param macs buffer receiving resynchronization mac MACS + */ + void (*f1star)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char sqn[AKA_SQN_LEN], + u_char amf[AKA_AMF_LEN], u_char macs[AKA_MAC_LEN]); + + /** + * Calculate RES from RAND using K + * + * @param k secret key K + * @param rand random value RAND + * @param res buffer receiving result RES, uses full 128 bit + */ + void (*f2)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char res[AKA_RES_MAX]); + /** + * Calculate CK from RAND using K + * + * @param k secret key K + * @param rand random value RAND + * @param macs buffer receiving encryption key CK + */ + void (*f3)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char ck[AKA_CK_LEN]); + /** + * Calculate IK from RAND using K + * + * @param k secret key K + * @param rand random value RAND + * @param macs buffer receiving integrity key IK + */ + void (*f4)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char ik[AKA_IK_LEN]); + /** + * Calculate AK from a RAND using K + * + * @param k secret key K + * @param rand random value RAND + * @param macs buffer receiving anonymity key AK + */ + void (*f5)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char ak[AKA_AK_LEN]); + /** + * Calculate AKS from a RAND using K + * + * @param k secret key K + * @param rand random value RAND + * @param macs buffer receiving resynchronization anonymity key AKS + */ + void (*f5star)(eap_aka_3gpp2_functions_t *this, u_char k[AKA_K_LEN], + u_char rand[AKA_RAND_LEN], u_char aks[AKA_AK_LEN]); + + /** + * Destroy a eap_aka_3gpp2_functions_t. + */ + void (*destroy)(eap_aka_3gpp2_functions_t *this); +}; + +/** + * Create a eap_aka_3gpp2_functions instance. + * + * @return function set, NULL on error + */ +eap_aka_3gpp2_functions_t *eap_aka_3gpp2_functions_create(); + +#endif /** EAP_AKA_3GPP2_FUNCTIONS_H_ @}*/ diff --git a/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_plugin.c b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_plugin.c new file mode 100644 index 000000000..626e83311 --- /dev/null +++ b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_plugin.c @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_aka_3gpp2_plugin.h" +#include "eap_aka_3gpp2_card.h" +#include "eap_aka_3gpp2_provider.h" +#include "eap_aka_3gpp2_functions.h" + +#include <daemon.h> + +typedef struct private_eap_aka_3gpp2_t private_eap_aka_3gpp2_t; + +/** + * Private data of an eap_aka_3gpp2_t object. + */ +struct private_eap_aka_3gpp2_t { + + /** + * Public eap_aka_3gpp2_plugin_t interface. + */ + eap_aka_3gpp2_plugin_t public; + + /** + * SIM card + */ + eap_aka_3gpp2_card_t *card; + + /** + * SIM provider + */ + eap_aka_3gpp2_provider_t *provider; + + /** + * AKA functions + */ + eap_aka_3gpp2_functions_t *functions; +}; + +/** + * Implementation of eap_aka_3gpp2_t.destroy. + */ +static void destroy(private_eap_aka_3gpp2_t *this) +{ + charon->sim->remove_card(charon->sim, &this->card->card); + charon->sim->remove_provider(charon->sim, &this->provider->provider); + this->card->destroy(this->card); + this->provider->destroy(this->provider); + this->functions->destroy(this->functions); + free(this); +} + +/** + * See header + */ +plugin_t *eap_aka_3gpp2_plugin_create() +{ + private_eap_aka_3gpp2_t *this = malloc_thing(private_eap_aka_3gpp2_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + this->functions = eap_aka_3gpp2_functions_create(); + if (!this->functions) + { + free(this); + return NULL; + } + this->card = eap_aka_3gpp2_card_create(this->functions); + this->provider = eap_aka_3gpp2_provider_create(this->functions); + + charon->sim->add_card(charon->sim, &this->card->card); + charon->sim->add_provider(charon->sim, &this->provider->provider); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_plugin.h b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_plugin.h new file mode 100644 index 000000000..2ac450a7d --- /dev/null +++ b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_plugin.h @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_aka_3gpp2 eap_aka_3gpp2 + * @ingroup cplugins + * + * @defgroup eap_aka_3gpp2_plugin eap_aka_3gpp2_plugin + * @{ @ingroup eap_aka_3gpp2 + */ + +#ifndef EAP_AKA_3GPP2_PLUGIN_H_ +#define EAP_AKA_3GPP2_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct eap_aka_3gpp2_plugin_t eap_aka_3gpp2_plugin_t; + +/** + * Plugin to provide a SIM card/provider using the 3GPP2 (S.S0055) standard. + * + * This plugin implements the standard of the 3GPP2 (S.S0055) and not the one + * of 3GGP, completely in software using the libgmp library.. + * The shared key used for authentication is from ipsec.secrets. The + * peers ID is used to query it. + * The AKA mechanism uses sequence numbers to detect replay attacks. The + * peer stores the sequence number normally in a USIM and accepts + * incremental sequence numbers (incremental for lifetime of the USIM). To + * prevent a complex sequence number management, this implementation uses + * a sequence number derived from time. It is initialized to the startup + * time of the daemon. + * To enable time based SEQs, define SEQ_CHECK as 1. Default is to accept + * any SEQ numbers. This allows an attacker to do replay attacks. But since + * the server has proven his identity via IKE, such an attack is only + * possible between server and AAA (if any). + */ +struct eap_aka_3gpp2_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** EAP_AKA_3GPP2_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_provider.c b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_provider.c new file mode 100644 index 000000000..9817fff8f --- /dev/null +++ b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_provider.c @@ -0,0 +1,204 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_aka_3gpp2_provider.h" + +#include <daemon.h> +#include <credentials/keys/shared_key.h> + +typedef struct private_eap_aka_3gpp2_provider_t private_eap_aka_3gpp2_provider_t; + +/** + * Private data of an eap_aka_3gpp2_provider_t object. + */ +struct private_eap_aka_3gpp2_provider_t { + + /** + * Public eap_aka_3gpp2_provider_t interface. + */ + eap_aka_3gpp2_provider_t public; + + /** + * AKA functions + */ + eap_aka_3gpp2_functions_t *f; + + /** + * time based SQN, we use the same for all peers + */ + char sqn[AKA_SQN_LEN]; +}; + +/** Authentication management field */ +static char amf[AKA_AMF_LEN] = {0x00, 0x01}; + +/** + * Get a shared key K from the credential database + */ +bool eap_aka_3gpp2_get_k(identification_t *id, char k[AKA_K_LEN]) +{ + shared_key_t *shared; + chunk_t key; + + shared = charon->credentials->get_shared(charon->credentials, + SHARED_EAP, id, NULL); + if (shared == NULL) + { + return FALSE; + } + key = shared->get_key(shared); + memset(k, '\0', AKA_K_LEN); + memcpy(k, key.ptr, min(key.len, AKA_K_LEN)); + shared->destroy(shared); + return TRUE; +} + +/** + * get SQN using current time + */ +void eap_aka_3gpp2_get_sqn(char sqn[AKA_SQN_LEN], int offset) +{ + timeval_t time; + + gettimeofday(&time, NULL); + /* set sqn to an integer containing 4 bytes seconds + 2 bytes usecs */ + time.tv_sec = htonl(time.tv_sec + offset); + /* usec's are never larger than 0x000f423f, so we shift the 12 first bits */ + time.tv_usec = htonl(time.tv_usec << 12); + memcpy(sqn, (char*)&time.tv_sec + sizeof(time_t) - 4, 4); + memcpy(sqn + 4, &time.tv_usec, 2); +} + +/** + * Implementation of usim_provider_t.get_quintuplet + */ +static bool get_quintuplet(private_eap_aka_3gpp2_provider_t *this, + identification_t *id, char rand[AKA_RAND_LEN], + char xres[AKA_RES_MAX], int *xres_len, + char ck[AKA_CK_LEN], char ik[AKA_IK_LEN], + char autn[AKA_AUTN_LEN]) +{ + rng_t *rng; + char mac[AKA_MAC_LEN], ak[AKA_AK_LEN], k[AKA_K_LEN]; + + /* generate RAND: we use a registered RNG, not f0() proposed in S.S0055 */ + rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK); + if (!rng) + { + DBG1(DBG_IKE, "generating RAND for AKA failed"); + return FALSE; + } + rng->get_bytes(rng, AKA_RAND_LEN, rand); + rng->destroy(rng); + + if (!eap_aka_3gpp2_get_k(id, k)) + { + DBG1(DBG_IKE, "no EAP key found for %Y to authenticate with AKA", id); + return FALSE; + } + + DBG3(DBG_IKE, "generated rand %b", rand, AKA_RAND_LEN); + DBG3(DBG_IKE, "using K %b", k, AKA_K_LEN); + + /* MAC */ + this->f->f1(this->f, k, rand, this->sqn, amf, mac); + /* AK */ + this->f->f5(this->f, k, rand, ak); + /* XRES as expected from client */ + this->f->f2(this->f, k, rand, xres); + *xres_len = AKA_RES_MAX; + /* AUTN = (SQN xor AK) || AMF || MAC */ + memcpy(autn, this->sqn, AKA_SQN_LEN); + memxor(autn, ak, AKA_AK_LEN); + memcpy(autn + AKA_SQN_LEN, amf, AKA_AMF_LEN); + memcpy(autn + AKA_SQN_LEN + AKA_AMF_LEN, mac, AKA_MAC_LEN); + DBG3(DBG_IKE, "AUTN %b", autn, AKA_AUTN_LEN); + /* CK/IK */ + this->f->f3(this->f, k, rand, ck); + this->f->f4(this->f, k, rand, ik); + + return TRUE; +} + +/** + * Implementation of usim_provider_t.resync + */ +static bool resync(private_eap_aka_3gpp2_provider_t *this, + identification_t *id, char rand[AKA_RAND_LEN], + char auts[AKA_AUTS_LEN]) +{ + char *sqn, *macs; + char aks[AKA_AK_LEN], k[AKA_K_LEN], amf[AKA_AMF_LEN], xmacs[AKA_MAC_LEN]; + + if (!eap_aka_3gpp2_get_k(id, k)) + { + DBG1(DBG_IKE, "no EAP key found for %Y to authenticate with AKA", id); + return FALSE; + } + + /* AUTHS = (AK xor SQN) | MAC */ + sqn = auts; + macs = auts + AKA_SQN_LEN; + this->f->f5star(this->f, k, rand, aks); + memxor(sqn, aks, AKA_AK_LEN); + + /* verify XMACS, AMF of zero is used in resynchronization */ + memset(amf, 0, AKA_AMF_LEN); + this->f->f1star(this->f, k, rand, sqn, amf, xmacs); + if (!memeq(macs, xmacs, AKA_MAC_LEN)) + { + DBG1(DBG_IKE, "received MACS does not match XMACS"); + DBG3(DBG_IKE, "MACS %b XMACS %b", + macs, AKA_MAC_LEN, xmacs, AKA_MAC_LEN); + return FALSE; + } + /* update stored SQN to received SQN + 1 */ + memcpy(this->sqn, sqn, AKA_SQN_LEN); + chunk_increment(chunk_create(this->sqn, AKA_SQN_LEN)); + return TRUE; +} + +/** + * Implementation of eap_aka_3gpp2_provider_t.destroy. + */ +static void destroy(private_eap_aka_3gpp2_provider_t *this) +{ + free(this); +} + +/** + * See header + */ +eap_aka_3gpp2_provider_t *eap_aka_3gpp2_provider_create( + eap_aka_3gpp2_functions_t *f) +{ + private_eap_aka_3gpp2_provider_t *this = malloc_thing(private_eap_aka_3gpp2_provider_t); + + this->public.provider.get_triplet = (bool(*)(sim_provider_t*, identification_t *id, char rand[SIM_RAND_LEN], char sres[SIM_SRES_LEN], char kc[SIM_KC_LEN]))return_false; + this->public.provider.get_quintuplet = (bool(*)(sim_provider_t*, identification_t *id, char rand[AKA_RAND_LEN], char xres[AKA_RES_MAX], int *xres_len, char ck[AKA_CK_LEN], char ik[AKA_IK_LEN], char autn[AKA_AUTN_LEN]))get_quintuplet; + this->public.provider.resync = (bool(*)(sim_provider_t*, identification_t *id, char rand[AKA_RAND_LEN], char auts[AKA_AUTS_LEN]))resync; + this->public.provider.is_pseudonym = (identification_t*(*)(sim_provider_t*, identification_t *id))return_null; + this->public.provider.gen_pseudonym = (identification_t*(*)(sim_provider_t*, identification_t *id))return_null; + this->public.provider.is_reauth = (identification_t*(*)(sim_provider_t*, identification_t *id, char [HASH_SIZE_SHA1], u_int16_t *counter))return_null; + this->public.provider.gen_reauth = (identification_t*(*)(sim_provider_t*, identification_t *id, char mk[HASH_SIZE_SHA1]))return_null; + this->public.destroy = (void(*)(eap_aka_3gpp2_provider_t*))destroy; + + this->f = f; + /* use an offset to accept clock skew between client/server without resync */ + eap_aka_3gpp2_get_sqn(this->sqn, 180); + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_provider.h b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_provider.h new file mode 100644 index 000000000..22ac0a96e --- /dev/null +++ b/src/libcharon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_provider.h @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_aka_3gpp2_provider eap_aka_3gpp2_provider + * @{ @ingroup eap_aka_3gpp2 + */ + +#ifndef EAP_AKA_3GPP2_PROVIDER_H_ +#define EAP_AKA_3GPP2_PROVIDER_H_ + +#include "eap_aka_3gpp2_functions.h" + +#include <sa/authenticators/eap/sim_manager.h> + +typedef struct eap_aka_3gpp2_provider_t eap_aka_3gpp2_provider_t; + +/** + * SIM provider implementation using a set of AKA functions. + */ +struct eap_aka_3gpp2_provider_t { + + /** + * Implements sim_provider_t interface. + */ + sim_provider_t provider; + + /** + * Destroy a eap_aka_3gpp2_provider_t. + */ + void (*destroy)(eap_aka_3gpp2_provider_t *this); +}; + +/** + * Create a eap_aka_3gpp2_provider instance. + */ +eap_aka_3gpp2_provider_t *eap_aka_3gpp2_provider_create( + eap_aka_3gpp2_functions_t *f); + +#endif /** EAP_AKA_3GPP2_PROVIDER_H_ @}*/ diff --git a/src/libcharon/plugins/eap_gtc/Makefile.am b/src/libcharon/plugins/eap_gtc/Makefile.am new file mode 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a/src/libcharon/plugins/eap_gtc/eap_gtc.c b/src/libcharon/plugins/eap_gtc/eap_gtc.c new file mode 100644 index 000000000..c7f55fa70 --- /dev/null +++ b/src/libcharon/plugins/eap_gtc/eap_gtc.c @@ -0,0 +1,327 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_gtc.h" + +#include <daemon.h> +#include <library.h> +#include <crypto/hashers/hasher.h> + +#include <security/pam_appl.h> + +#define GTC_REQUEST_MSG "password" +#define GTC_PAM_SERVICE "login" + +typedef struct private_eap_gtc_t private_eap_gtc_t; + +/** + * Private data of an eap_gtc_t object. + */ +struct private_eap_gtc_t { + + /** + * Public authenticator_t interface. + */ + eap_gtc_t public; + + /** + * ID of the server + */ + identification_t *server; + + /** + * ID of the peer + */ + identification_t *peer; + + /** + * EAP message identififier + */ + u_int8_t identifier; +}; + +typedef struct eap_gtc_header_t eap_gtc_header_t; + +/** + * packed eap GTC header struct + */ +struct eap_gtc_header_t { + /** EAP code (REQUEST/RESPONSE) */ + u_int8_t code; + /** unique message identifier */ + u_int8_t identifier; + /** length of whole message */ + u_int16_t length; + /** EAP type */ + u_int8_t type; + /** type data */ + u_int8_t data[]; +} __attribute__((__packed__)); + +/** + * Implementation of eap_method_t.initiate for the peer + */ +static status_t initiate_peer(private_eap_gtc_t *this, eap_payload_t **out) +{ + /* peer never initiates */ + return FAILED; +} + +/** + * PAM conv callback function + */ +static int auth_conv(int num_msg, const struct pam_message **msg, + struct pam_response **resp, char *password) +{ + struct pam_response *response; + + if (num_msg != 1) + { + return PAM_CONV_ERR; + } + response = malloc(sizeof(struct pam_response)); + response->resp = strdup(password); + response->resp_retcode = 0; + *resp = response; + return PAM_SUCCESS; +} + +/** + * Authenticate a username/password using PAM + */ +static bool authenticate(char *service, char *user, char *password) +{ + pam_handle_t *pamh = NULL; + static struct pam_conv conv; + int ret; + + conv.conv = (void*)auth_conv; + conv.appdata_ptr = password; + + ret = pam_start(service, user, &conv, &pamh); + if (ret != PAM_SUCCESS) + { + DBG1(DBG_IKE, "EAP-GTC pam_start failed: %s", + pam_strerror(pamh, ret)); + return FALSE; + } + ret = pam_authenticate(pamh, 0); + if (ret == PAM_SUCCESS) + { + ret = pam_acct_mgmt(pamh, 0); + if (ret != PAM_SUCCESS) + { + DBG1(DBG_IKE, "EAP-GTC pam_acct_mgmt failed: %s", + pam_strerror(pamh, ret)); + } + } + else + { + DBG1(DBG_IKE, "EAP-GTC pam_authenticate failed: %s", + pam_strerror(pamh, ret)); + } + pam_end(pamh, ret); + return ret == PAM_SUCCESS; +} + +/** + * Implementation of eap_method_t.initiate for the server + */ +static status_t initiate_server(private_eap_gtc_t *this, eap_payload_t **out) +{ + eap_gtc_header_t *req; + size_t len; + + len = strlen(GTC_REQUEST_MSG); + req = alloca(sizeof(eap_gtc_header_t) + len); + req->length = htons(sizeof(eap_gtc_header_t) + len); + req->code = EAP_REQUEST; + req->identifier = this->identifier; + req->type = EAP_GTC; + memcpy(req->data, GTC_REQUEST_MSG, len); + + *out = eap_payload_create_data(chunk_create((void*)req, + sizeof(eap_gtc_header_t) + len)); + return NEED_MORE; +} + +/** + * Implementation of eap_method_t.process for the peer + */ +static status_t process_peer(private_eap_gtc_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + eap_gtc_header_t *res; + shared_key_t *shared; + chunk_t key; + size_t len; + + shared = charon->credentials->get_shared(charon->credentials, SHARED_EAP, + this->peer, this->server); + if (shared == NULL) + { + DBG1(DBG_IKE, "no EAP key found for '%Y' - '%Y'", + this->peer, this->server); + return FAILED; + } + key = shared->get_key(shared); + len = key.len; + + /* TODO: According to the draft we should "SASLprep" password, RFC4013. */ + + res = alloca(sizeof(eap_gtc_header_t) + len); + res->length = htons(sizeof(eap_gtc_header_t) + len); + res->code = EAP_RESPONSE; + res->identifier = in->get_identifier(in); + res->type = EAP_GTC; + memcpy(res->data, key.ptr, len); + + shared->destroy(shared); + + *out = eap_payload_create_data(chunk_create((void*)res, + sizeof(eap_gtc_header_t) + len)); + return NEED_MORE; +} + +/** + * Implementation of eap_method_t.process for the server + */ +static status_t process_server(private_eap_gtc_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + chunk_t data, encoding; + char *user, *password, *service, *pos; + + data = chunk_skip(in->get_data(in), 5); + if (this->identifier != in->get_identifier(in) || !data.len) + { + DBG1(DBG_IKE, "received invalid EAP-GTC message"); + return FAILED; + } + + encoding = this->peer->get_encoding(this->peer); + /* if a RFC822_ADDR id is provided, we use the username part only */ + pos = memchr(encoding.ptr, '@', encoding.len); + if (pos) + { + encoding.len = (u_char*)pos - encoding.ptr; + } + user = alloca(encoding.len + 1); + memcpy(user, encoding.ptr, encoding.len); + user[encoding.len] = '\0'; + + password = alloca(data.len + 1); + memcpy(password, data.ptr, data.len); + password[data.len] = '\0'; + + service = lib->settings->get_str(lib->settings, + "charon.plugins.eap-gtc.pam_service", GTC_PAM_SERVICE); + + if (!authenticate(service, user, password)) + { + return FAILED; + } + return SUCCESS; +} + +/** + * Implementation of eap_method_t.get_type. + */ +static eap_type_t get_type(private_eap_gtc_t *this, u_int32_t *vendor) +{ + *vendor = 0; + return EAP_GTC; +} + +/** + * Implementation of eap_method_t.get_msk. + */ +static status_t get_msk(private_eap_gtc_t *this, chunk_t *msk) +{ + return FAILED; +} + +/** + * Implementation of eap_method_t.is_mutual. + */ +static bool is_mutual(private_eap_gtc_t *this) +{ + return FALSE; +} + +/** + * Implementation of eap_method_t.destroy. + */ +static void destroy(private_eap_gtc_t *this) +{ + this->peer->destroy(this->peer); + this->server->destroy(this->server); + free(this); +} + +/** + * Generic constructor + */ +static private_eap_gtc_t *eap_gtc_create_generic(identification_t *server, + identification_t *peer) +{ + private_eap_gtc_t *this = malloc_thing(private_eap_gtc_t); + + this->public.eap_method_interface.initiate = NULL; + this->public.eap_method_interface.process = NULL; + this->public.eap_method_interface.get_type = (eap_type_t(*)(eap_method_t*,u_int32_t*))get_type; + this->public.eap_method_interface.is_mutual = (bool(*)(eap_method_t*))is_mutual; + this->public.eap_method_interface.get_msk = (status_t(*)(eap_method_t*,chunk_t*))get_msk; + this->public.eap_method_interface.destroy = (void(*)(eap_method_t*))destroy; + + /* private data */ + this->peer = peer->clone(peer); + this->server = server->clone(server); + this->identifier = 0; + + return this; +} + +/* + * see header + */ +eap_gtc_t *eap_gtc_create_server(identification_t *server, identification_t *peer) +{ + private_eap_gtc_t *this = eap_gtc_create_generic(server, peer); + + this->public.eap_method_interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate_server; + this->public.eap_method_interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process_server; + + /* generate a non-zero identifier */ + do { + this->identifier = random(); + } while (!this->identifier); + + return &this->public; +} + +/* + * see header + */ +eap_gtc_t *eap_gtc_create_peer(identification_t *server, identification_t *peer) +{ + private_eap_gtc_t *this = eap_gtc_create_generic(server, peer); + + this->public.eap_method_interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate_peer; + this->public.eap_method_interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process_peer; + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_gtc/eap_gtc.h b/src/libcharon/plugins/eap_gtc/eap_gtc.h new file mode 100644 index 000000000..2eb8482f8 --- /dev/null +++ b/src/libcharon/plugins/eap_gtc/eap_gtc.h @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_gtc_i eap_gtc + * @{ @ingroup eap_gtc + */ + +#ifndef EAP_GTC_H_ +#define EAP_GTC_H_ + +typedef struct eap_gtc_t eap_gtc_t; + +#include <sa/authenticators/eap/eap_method.h> + +/** + * Implementation of the eap_method_t interface using EAP-GTC. + * + * This implementation of draft-sheffer-ikev2-gtc-00.txt uses PAM to + * verify user credentials. + */ +struct eap_gtc_t { + + /** + * Implemented eap_method_t interface. + */ + eap_method_t eap_method_interface; +}; + +/** + * Creates the EAP method EAP-GTC acting as server. + * + * @param server ID of the EAP server + * @param peer ID of the EAP client + * @return eap_gtc_t object + */ +eap_gtc_t *eap_gtc_create_server(identification_t *server, identification_t *peer); + +/** + * Creates the EAP method EAP-GTC acting as peer. + * + * @param server ID of the EAP server + * @param peer ID of the EAP client + * @return eap_gtc_t object + */ +eap_gtc_t *eap_gtc_create_peer(identification_t *server, identification_t *peer); + +#endif /** EAP_GTC_H_ @}*/ diff --git a/src/libcharon/plugins/eap_gtc/eap_gtc_plugin.c b/src/libcharon/plugins/eap_gtc/eap_gtc_plugin.c new file mode 100644 index 000000000..91ba84b3d --- /dev/null +++ b/src/libcharon/plugins/eap_gtc/eap_gtc_plugin.c @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_gtc_plugin.h" + +#include "eap_gtc.h" + +#include <daemon.h> + +/* missing in cababilities.h */ +#define CAP_AUDIT_WRITE 29 + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(eap_gtc_plugin_t *this) +{ + charon->eap->remove_method(charon->eap, + (eap_constructor_t)eap_gtc_create_server); + charon->eap->remove_method(charon->eap, + (eap_constructor_t)eap_gtc_create_peer); + free(this); +} + +/* + * see header file + */ +plugin_t *eap_gtc_plugin_create() +{ + eap_gtc_plugin_t *this = malloc_thing(eap_gtc_plugin_t); + + this->plugin.destroy = (void(*)(plugin_t*))destroy; + + /* required for PAM authentication */ + charon->keep_cap(charon, CAP_AUDIT_WRITE); + + charon->eap->add_method(charon->eap, EAP_GTC, 0, EAP_SERVER, + (eap_constructor_t)eap_gtc_create_server); + charon->eap->add_method(charon->eap, EAP_GTC, 0, EAP_PEER, + (eap_constructor_t)eap_gtc_create_peer); + + return &this->plugin; +} + diff --git a/src/libcharon/plugins/eap_gtc/eap_gtc_plugin.h b/src/libcharon/plugins/eap_gtc/eap_gtc_plugin.h new file mode 100644 index 000000000..9c4052a6d --- /dev/null +++ b/src/libcharon/plugins/eap_gtc/eap_gtc_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_gtc eap_gtc + * @ingroup cplugins + * + * @defgroup eap_gtc_plugin eap_gtc_plugin + * @{ @ingroup eap_gtc + */ + +#ifndef EAP_GTC_PLUGIN_H_ +#define EAP_GTC_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct eap_gtc_plugin_t eap_gtc_plugin_t; + +/** + * EAP-GTC plugin + */ +struct eap_gtc_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** EAP_GTC_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/eap_identity/Makefile.am b/src/libcharon/plugins/eap_identity/Makefile.am new file mode 100644 index 000000000..2a7c764b0 --- /dev/null +++ b/src/libcharon/plugins/eap_identity/Makefile.am @@ -0,0 +1,16 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-eap-identity.la +else +plugin_LTLIBRARIES = libstrongswan-eap-identity.la +endif + +libstrongswan_eap_identity_la_SOURCES = \ + eap_identity_plugin.h eap_identity_plugin.c eap_identity.h eap_identity.c + +libstrongswan_eap_identity_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/eap_identity/Makefile.in b/src/libcharon/plugins/eap_identity/Makefile.in new file mode 100644 index 000000000..bbb987dd6 --- /dev/null +++ b/src/libcharon/plugins/eap_identity/Makefile.in @@ -0,0 +1,589 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the 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000000000..ab082a955 --- /dev/null +++ b/src/libcharon/plugins/eap_identity/eap_identity.c @@ -0,0 +1,218 @@ +/* + * Copyright (C) 2007-2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_identity.h" + +#include <daemon.h> +#include <library.h> + +typedef struct private_eap_identity_t private_eap_identity_t; + +/** + * Private data of an eap_identity_t object. + */ +struct private_eap_identity_t { + + /** + * Public authenticator_t interface. + */ + eap_identity_t public; + + /** + * ID of the peer + */ + identification_t *peer; + + /** + * received identity chunk + */ + chunk_t identity; +}; + +typedef struct eap_identity_header_t eap_identity_header_t; + +/** + * packed EAP Identity header struct + */ +struct eap_identity_header_t { + /** EAP code (REQUEST/RESPONSE) */ + u_int8_t code; + /** unique message identifier */ + u_int8_t identifier; + /** length of whole message */ + u_int16_t length; + /** EAP type */ + u_int8_t type; + /** identity data */ + u_int8_t data[]; +} __attribute__((__packed__)); + +/** + * Implementation of eap_method_t.process for the peer + */ +static status_t process_peer(private_eap_identity_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + chunk_t id; + eap_identity_header_t *hdr; + size_t len; + + id = this->peer->get_encoding(this->peer); + len = sizeof(eap_identity_header_t) + id.len; + + hdr = alloca(len); + hdr->code = EAP_RESPONSE; + hdr->identifier = in->get_identifier(in); + hdr->length = htons(len); + hdr->type = EAP_IDENTITY; + memcpy(hdr->data, id.ptr, id.len); + + *out = eap_payload_create_data(chunk_create((u_char*)hdr, len)); + return SUCCESS; +} + +/** + * Implementation of eap_method_t.initiate for the peer + */ +static status_t initiate_peer(private_eap_identity_t *this, eap_payload_t **out) +{ + /* peer never initiates */ + return FAILED; +} + +/** + * Implementation of eap_method_t.process for the server + */ +static status_t process_server(private_eap_identity_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + chunk_t data; + + data = chunk_skip(in->get_data(in), 5); + if (data.len) + { + this->identity = chunk_clone(data); + } + return SUCCESS; +} + +/** + * Implementation of eap_method_t.initiate for the server + */ +static status_t initiate_server(private_eap_identity_t *this, eap_payload_t **out) +{ + eap_identity_header_t hdr; + + hdr.code = EAP_REQUEST; + hdr.identifier = 0; + hdr.length = htons(sizeof(eap_identity_header_t)); + hdr.type = EAP_IDENTITY; + + *out = eap_payload_create_data(chunk_create((u_char*)&hdr, + sizeof(eap_identity_header_t))); + return NEED_MORE; +} + +/** + * Implementation of eap_method_t.get_type. + */ +static eap_type_t get_type(private_eap_identity_t *this, u_int32_t *vendor) +{ + *vendor = 0; + return EAP_IDENTITY; +} + +/** + * Implementation of eap_method_t.get_msk. + */ +static status_t get_msk(private_eap_identity_t *this, chunk_t *msk) +{ + if (this->identity.ptr) + { + *msk = this->identity; + return SUCCESS; + } + return FAILED; +} + +/** + * Implementation of eap_method_t.is_mutual. + */ +static bool is_mutual(private_eap_identity_t *this) +{ + return FALSE; +} + +/** + * Implementation of eap_method_t.destroy. + */ +static void destroy(private_eap_identity_t *this) +{ + this->peer->destroy(this->peer); + free(this->identity.ptr); + free(this); +} + +/** + * Generic constructor + */ +static private_eap_identity_t *eap_identity_create(identification_t *server, + identification_t *peer) +{ + private_eap_identity_t *this = malloc_thing(private_eap_identity_t); + + this->public.eap_method_interface.initiate = NULL; + this->public.eap_method_interface.process = NULL; + this->public.eap_method_interface.get_type = (eap_type_t(*)(eap_method_t*,u_int32_t*))get_type; + this->public.eap_method_interface.is_mutual = (bool(*)(eap_method_t*))is_mutual; + this->public.eap_method_interface.get_msk = (status_t(*)(eap_method_t*,chunk_t*))get_msk; + this->public.eap_method_interface.destroy = (void(*)(eap_method_t*))destroy; + + this->peer = peer->clone(peer); + this->identity = chunk_empty; + + return this; +} + +/* + * Described in header. + */ +eap_identity_t *eap_identity_create_peer(identification_t *server, + identification_t *peer) +{ + private_eap_identity_t *this = eap_identity_create(server, peer); + + /* public functions */ + this->public.eap_method_interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate_peer; + this->public.eap_method_interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process_peer; + + return &this->public; +} + +/* + * Described in header. + */ +eap_identity_t *eap_identity_create_server(identification_t *server, + identification_t *peer) +{ + private_eap_identity_t *this = eap_identity_create(server, peer); + + /* public functions */ + this->public.eap_method_interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate_server; + this->public.eap_method_interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process_server; + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_identity/eap_identity.h b/src/libcharon/plugins/eap_identity/eap_identity.h new file mode 100644 index 000000000..7364a8bda --- /dev/null +++ b/src/libcharon/plugins/eap_identity/eap_identity.h @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_identity_i eap_identity + * @{ @ingroup eap_identity + */ + +#ifndef EAP_IDENTITY_H_ +#define EAP_IDENTITY_H_ + +typedef struct eap_identity_t eap_identity_t; + +#include <sa/authenticators/eap/eap_method.h> + +/** + * Implementation of the eap_method_t interface using EAP Identity. + */ +struct eap_identity_t { + + /** + * Implemented eap_method_t interface. + */ + eap_method_t eap_method_interface; +}; + +/** + * Creates the EAP method EAP Identity, acting as server. + * + * @param server ID of the EAP server + * @param peer ID of the EAP client + * @return eap_identity_t object + */ +eap_identity_t *eap_identity_create_server(identification_t *server, + identification_t *peer); + +/** + * Creates the EAP method EAP Identity, acting as peer. + * + * @param server ID of the EAP server + * @param peer ID of the EAP client + * @return eap_identity_t object + */ +eap_identity_t *eap_identity_create_peer(identification_t *server, + identification_t *peer); + +#endif /** EAP_IDENTITY_H_ @}*/ diff --git a/src/libcharon/plugins/eap_identity/eap_identity_plugin.c b/src/libcharon/plugins/eap_identity/eap_identity_plugin.c new file mode 100644 index 000000000..082997154 --- /dev/null +++ b/src/libcharon/plugins/eap_identity/eap_identity_plugin.c @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_identity_plugin.h" + +#include "eap_identity.h" + +#include <daemon.h> + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(eap_identity_plugin_t *this) +{ + charon->eap->remove_method(charon->eap, + (eap_constructor_t)eap_identity_create_server); + charon->eap->remove_method(charon->eap, + (eap_constructor_t)eap_identity_create_peer); + free(this); +} + +/* + * see header file + */ +plugin_t *eap_identity_plugin_create() +{ + eap_identity_plugin_t *this = malloc_thing(eap_identity_plugin_t); + + this->plugin.destroy = (void(*)(plugin_t*))destroy; + + charon->eap->add_method(charon->eap, EAP_IDENTITY, 0, EAP_SERVER, + (eap_constructor_t)eap_identity_create_server); + charon->eap->add_method(charon->eap, EAP_IDENTITY, 0, EAP_PEER, + (eap_constructor_t)eap_identity_create_peer); + + return &this->plugin; +} + diff --git a/src/libcharon/plugins/eap_identity/eap_identity_plugin.h b/src/libcharon/plugins/eap_identity/eap_identity_plugin.h new file mode 100644 index 000000000..274156a1b --- /dev/null +++ b/src/libcharon/plugins/eap_identity/eap_identity_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_identity eap_identity + * @ingroup cplugins + * + * @defgroup eap_identity_plugin eap_identity_plugin + * @{ @ingroup eap_identity + */ + +#ifndef EAP_IDENTITY_PLUGIN_H_ +#define EAP_IDENTITY_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct eap_identity_plugin_t eap_identity_plugin_t; + +/** + * EAP-IDENTITY plugin. + */ +struct eap_identity_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** EAP_IDENTITY_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/eap_md5/Makefile.am b/src/libcharon/plugins/eap_md5/Makefile.am new file mode 100644 index 000000000..e9936c925 --- /dev/null +++ b/src/libcharon/plugins/eap_md5/Makefile.am @@ -0,0 +1,16 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-eap-md5.la +else 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install install-am install-data \ + install-data-am install-dvi install-dvi-am install-exec \ + install-exec-am install-html install-html-am install-info \ + install-info-am install-man install-pdf install-pdf-am \ + install-pluginLTLIBRARIES install-ps install-ps-am \ + install-strip installcheck installcheck-am installdirs \ + maintainer-clean maintainer-clean-generic mostlyclean \ + mostlyclean-compile mostlyclean-generic mostlyclean-libtool \ + pdf pdf-am ps ps-am tags uninstall uninstall-am \ + uninstall-pluginLTLIBRARIES + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/eap_md5/eap_md5.c b/src/libcharon/plugins/eap_md5/eap_md5.c new file mode 100644 index 000000000..0eda8f755 --- /dev/null +++ b/src/libcharon/plugins/eap_md5/eap_md5.c @@ -0,0 +1,303 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_md5.h" + +#include <daemon.h> +#include <library.h> +#include <crypto/hashers/hasher.h> + +typedef struct private_eap_md5_t private_eap_md5_t; + +/** + * Private data of an eap_md5_t object. + */ +struct private_eap_md5_t { + + /** + * Public authenticator_t interface. + */ + eap_md5_t public; + + /** + * ID of the server + */ + identification_t *server; + + /** + * ID of the peer + */ + identification_t *peer; + + /** + * challenge sent by the server + */ + chunk_t challenge; + + /** + * EAP message identififier + */ + u_int8_t identifier; +}; + +typedef struct eap_md5_header_t eap_md5_header_t; + +/** + * packed eap MD5 header struct + */ +struct eap_md5_header_t { + /** EAP code (REQUEST/RESPONSE) */ + u_int8_t code; + /** unique message identifier */ + u_int8_t identifier; + /** length of whole message */ + u_int16_t length; + /** EAP type */ + u_int8_t type; + /** length of value (challenge) */ + u_int8_t value_size; + /** actual value */ + u_int8_t value[]; +} __attribute__((__packed__)); + +#define CHALLENGE_LEN 16 +#define PAYLOAD_LEN (CHALLENGE_LEN + sizeof(eap_md5_header_t)) + +/** + * Hash the challenge string, create response + */ +static status_t hash_challenge(private_eap_md5_t *this, chunk_t *response, + identification_t *me, identification_t *other) +{ + shared_key_t *shared; + chunk_t concat; + hasher_t *hasher; + + shared = charon->credentials->get_shared(charon->credentials, SHARED_EAP, + me, other); + if (shared == NULL) + { + DBG1(DBG_IKE, "no EAP key found for hosts '%Y' - '%Y'", me, other); + return NOT_FOUND; + } + concat = chunk_cata("ccc", chunk_from_thing(this->identifier), + shared->get_key(shared), this->challenge); + shared->destroy(shared); + hasher = lib->crypto->create_hasher(lib->crypto, HASH_MD5); + if (hasher == NULL) + { + DBG1(DBG_IKE, "EAP-MD5 failed, MD5 not supported"); + return FAILED; + } + hasher->allocate_hash(hasher, concat, response); + hasher->destroy(hasher); + return SUCCESS; +} + +/** + * Implementation of eap_method_t.initiate for the peer + */ +static status_t initiate_peer(private_eap_md5_t *this, eap_payload_t **out) +{ + /* peer never initiates */ + return FAILED; +} + +/** + * Implementation of eap_method_t.initiate for the server + */ +static status_t initiate_server(private_eap_md5_t *this, eap_payload_t **out) +{ + rng_t *rng; + eap_md5_header_t *req; + + rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK); + if (!rng) + { + return FAILED; + } + rng->allocate_bytes(rng, CHALLENGE_LEN, &this->challenge); + rng->destroy(rng); + + req = alloca(PAYLOAD_LEN); + req->length = htons(PAYLOAD_LEN); + req->code = EAP_REQUEST; + req->identifier = this->identifier; + req->type = EAP_MD5; + req->value_size = this->challenge.len; + memcpy(req->value, this->challenge.ptr, this->challenge.len); + + *out = eap_payload_create_data(chunk_create((void*)req, PAYLOAD_LEN)); + return NEED_MORE; +} + +/** + * Implementation of eap_method_t.process for the peer + */ +static status_t process_peer(private_eap_md5_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + chunk_t response; + chunk_t data; + eap_md5_header_t *req; + + this->identifier = in->get_identifier(in); + data = in->get_data(in); + this->challenge = chunk_clone(chunk_skip(data, 6)); + if (data.len < 6 || this->challenge.len < *(data.ptr + 5)) + { + DBG1(DBG_IKE, "received invalid EAP-MD5 message"); + return FAILED; + } + if (hash_challenge(this, &response, this->peer, this->server) != SUCCESS) + { + return FAILED; + } + req = alloca(PAYLOAD_LEN); + req->length = htons(PAYLOAD_LEN); + req->code = EAP_RESPONSE; + req->identifier = this->identifier; + req->type = EAP_MD5; + req->value_size = response.len; + memcpy(req->value, response.ptr, response.len); + chunk_free(&response); + + *out = eap_payload_create_data(chunk_create((void*)req, PAYLOAD_LEN)); + return NEED_MORE; +} + +/** + * Implementation of eap_method_t.process for the server + */ +static status_t process_server(private_eap_md5_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + chunk_t response, expected; + chunk_t data; + + if (this->identifier != in->get_identifier(in)) + { + DBG1(DBG_IKE, "received invalid EAP-MD5 message"); + return FAILED; + } + if (hash_challenge(this, &expected, this->server, this->peer) != SUCCESS) + { + return FAILED; + } + data = in->get_data(in); + response = chunk_skip(data, 6); + + if (response.len < expected.len || + !memeq(response.ptr, expected.ptr, expected.len)) + { + chunk_free(&expected); + DBG1(DBG_IKE, "EAP-MD5 verification failed"); + return FAILED; + } + chunk_free(&expected); + return SUCCESS; +} + +/** + * Implementation of eap_method_t.get_type. + */ +static eap_type_t get_type(private_eap_md5_t *this, u_int32_t *vendor) +{ + *vendor = 0; + return EAP_MD5; +} + +/** + * Implementation of eap_method_t.get_msk. + */ +static status_t get_msk(private_eap_md5_t *this, chunk_t *msk) +{ + return FAILED; +} + +/** + * Implementation of eap_method_t.is_mutual. + */ +static bool is_mutual(private_eap_md5_t *this) +{ + return FALSE; +} + +/** + * Implementation of eap_method_t.destroy. + */ +static void destroy(private_eap_md5_t *this) +{ + this->peer->destroy(this->peer); + this->server->destroy(this->server); + chunk_free(&this->challenge); + free(this); +} + +/** + * Generic constructor + */ +static private_eap_md5_t *eap_md5_create_generic(identification_t *server, + identification_t *peer) +{ + private_eap_md5_t *this = malloc_thing(private_eap_md5_t); + + this->public.eap_method_interface.initiate = NULL; + this->public.eap_method_interface.process = NULL; + this->public.eap_method_interface.get_type = (eap_type_t(*)(eap_method_t*,u_int32_t*))get_type; + this->public.eap_method_interface.is_mutual = (bool(*)(eap_method_t*))is_mutual; + this->public.eap_method_interface.get_msk = (status_t(*)(eap_method_t*,chunk_t*))get_msk; + this->public.eap_method_interface.destroy = (void(*)(eap_method_t*))destroy; + + /* private data */ + this->peer = peer->clone(peer); + this->server = server->clone(server); + this->challenge = chunk_empty; + this->identifier = 0; + + return this; +} + +/* + * see header + */ +eap_md5_t *eap_md5_create_server(identification_t *server, identification_t *peer) +{ + private_eap_md5_t *this = eap_md5_create_generic(server, peer); + + this->public.eap_method_interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate_server; + this->public.eap_method_interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process_server; + + /* generate a non-zero identifier */ + do { + this->identifier = random(); + } while (!this->identifier); + + return &this->public; +} + +/* + * see header + */ +eap_md5_t *eap_md5_create_peer(identification_t *server, identification_t *peer) +{ + private_eap_md5_t *this = eap_md5_create_generic(server, peer); + + this->public.eap_method_interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate_peer; + this->public.eap_method_interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process_peer; + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_md5/eap_md5.h b/src/libcharon/plugins/eap_md5/eap_md5.h new file mode 100644 index 000000000..3cff0dd79 --- /dev/null +++ b/src/libcharon/plugins/eap_md5/eap_md5.h @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_md5_i eap_md5 + * @{ @ingroup eap_md5 + */ + +#ifndef EAP_MD5_H_ +#define EAP_MD5_H_ + +typedef struct eap_md5_t eap_md5_t; + +#include <sa/authenticators/eap/eap_method.h> + +/** + * Implementation of the eap_method_t interface using EAP-MD5 (CHAP). + */ +struct eap_md5_t { + + /** + * Implemented eap_method_t interface. + */ + eap_method_t eap_method_interface; +}; + +/** + * Creates the EAP method EAP-MD5 acting as server. + * + * @param server ID of the EAP server + * @param peer ID of the EAP client + * @return eap_md5_t object + */ +eap_md5_t *eap_md5_create_server(identification_t *server, identification_t *peer); + +/** + * Creates the EAP method EAP-MD5 acting as peer. + * + * @param server ID of the EAP server + * @param peer ID of the EAP client + * @return eap_md5_t object + */ +eap_md5_t *eap_md5_create_peer(identification_t *server, identification_t *peer); + +#endif /** EAP_MD5_H_ @}*/ diff --git a/src/libcharon/plugins/eap_md5/eap_md5_plugin.c b/src/libcharon/plugins/eap_md5/eap_md5_plugin.c new file mode 100644 index 000000000..e716dc6e8 --- /dev/null +++ b/src/libcharon/plugins/eap_md5/eap_md5_plugin.c @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_md5_plugin.h" + +#include "eap_md5.h" + +#include <daemon.h> + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(eap_md5_plugin_t *this) +{ + charon->eap->remove_method(charon->eap, + (eap_constructor_t)eap_md5_create_server); + charon->eap->remove_method(charon->eap, + (eap_constructor_t)eap_md5_create_peer); + free(this); +} + +/* + * see header file + */ +plugin_t *eap_md5_plugin_create() +{ + eap_md5_plugin_t *this = malloc_thing(eap_md5_plugin_t); + + this->plugin.destroy = (void(*)(plugin_t*))destroy; + + charon->eap->add_method(charon->eap, EAP_MD5, 0, EAP_SERVER, + (eap_constructor_t)eap_md5_create_server); + charon->eap->add_method(charon->eap, EAP_MD5, 0, EAP_PEER, + (eap_constructor_t)eap_md5_create_peer); + + return &this->plugin; +} + diff --git a/src/libcharon/plugins/eap_md5/eap_md5_plugin.h b/src/libcharon/plugins/eap_md5/eap_md5_plugin.h new file mode 100644 index 000000000..e5e1a6e94 --- /dev/null +++ b/src/libcharon/plugins/eap_md5/eap_md5_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_md5 eap_md5 + * @ingroup cplugins + * + * @defgroup eap_md5_plugin eap_md5_plugin + * @{ @ingroup eap_md5 + */ + +#ifndef EAP_MD5_PLUGIN_H_ +#define EAP_MD5_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct eap_md5_plugin_t eap_md5_plugin_t; + +/** + * EAP-MD5 plugin + */ +struct eap_md5_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** EAP_MD5_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/eap_mschapv2/Makefile.am b/src/libcharon/plugins/eap_mschapv2/Makefile.am new file mode 100644 index 000000000..b9555b3c1 --- /dev/null +++ b/src/libcharon/plugins/eap_mschapv2/Makefile.am @@ -0,0 +1,17 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-eap-mschapv2.la +else +plugin_LTLIBRARIES = libstrongswan-eap-mschapv2.la +endif + +libstrongswan_eap_mschapv2_la_SOURCES = \ + eap_mschapv2_plugin.h eap_mschapv2_plugin.c \ + eap_mschapv2.h eap_mschapv2.c + +libstrongswan_eap_mschapv2_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/eap_mschapv2/Makefile.in b/src/libcharon/plugins/eap_mschapv2/Makefile.in new file mode 100644 index 000000000..2f6c65df4 --- /dev/null +++ b/src/libcharon/plugins/eap_mschapv2/Makefile.in @@ -0,0 +1,590 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src/libcharon/plugins/eap_mschapv2 +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/config/libtool.m4 \ + $(top_srcdir)/m4/config/ltoptions.m4 \ + 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000000000..c1ccf72eb --- /dev/null +++ b/src/libcharon/plugins/eap_mschapv2/eap_mschapv2.c @@ -0,0 +1,1250 @@ +/* + * Copyright (C) 2009 Tobias Brunner + * Copyright (C) 2010 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_mschapv2.h" + +#include <ctype.h> +#include <unistd.h> + +#include <daemon.h> +#include <library.h> +#include <utils/enumerator.h> +#include <crypto/crypters/crypter.h> +#include <crypto/hashers/hasher.h> + +typedef struct private_eap_mschapv2_t private_eap_mschapv2_t; + +/** + * Private data of an eap_mschapv2_t object. + */ +struct private_eap_mschapv2_t +{ + /** + * Public authenticator_t interface. + */ + eap_mschapv2_t public; + + /** + * ID of the server + */ + identification_t *server; + + /** + * ID of the peer + */ + identification_t *peer; + + /** + * challenge sent by the server + */ + chunk_t challenge; + + /** + * generated NT-Response + */ + chunk_t nt_response; + + /** + * generated Authenticator Response + */ + chunk_t auth_response; + + /** + * generated MSK + */ + chunk_t msk; + + /** + * EAP message identifier + */ + u_int8_t identifier; + + /** + * MS-CHAPv2-ID (session ID, increases with each retry) + */ + u_int8_t mschapv2id; + + /** + * Number of retries + */ + int retries; +}; + +/** + * OpCodes + */ +enum mschapv2_opcode_t +{ + MSCHAPV2_CHALLENGE = 1, + MSCHAPV2_RESPONSE = 2, + MSCHAPV2_SUCCESS = 3, + MSCHAPV2_FAILURE = 4, + MSCHAPV2_CHANGE_PASSWORD = 7, +}; + +/** + * Names for OpCodes + */ +ENUM_BEGIN(mschapv2_opcode_names, MSCHAPV2_CHALLENGE, MSCHAPV2_FAILURE, + "CHALLENGE", + "RESPONSE", + "SUCCESS", + "FAILURE"); +ENUM_NEXT(mschapv2_opcode_names, MSCHAPV2_CHANGE_PASSWORD, MSCHAPV2_CHANGE_PASSWORD, MSCHAPV2_FAILURE, + "CHANGE_PASSWORD"); +ENUM_END(mschapv2_opcode_names, MSCHAPV2_CHANGE_PASSWORD); + +/** + * Error codes + */ +enum mschapv2_error_t +{ + ERROR_RESTRICTED_LOGON_HOURS = 646, + ERROR_ACCT_DISABLED = 647, + ERROR_PASSWD_EXPIRED = 648, + ERROR_NO_DIALIN_PERMISSION = 649, + ERROR_AUTHENTICATION_FAILURE = 691, + ERROR_CHANGING_PASSWORD = 709, +}; + +/** + * Names for error codes + */ +ENUM_BEGIN(mschapv2_error_names, ERROR_RESTRICTED_LOGON_HOURS, ERROR_NO_DIALIN_PERMISSION, + "ERROR_RESTRICTED_LOGON_HOURS", + "ERROR_ACCT_DISABLED", + "ERROR_PASSWD_EXPIRED", + "ERROR_NO_DIALIN_PERMISSION"); +ENUM_NEXT(mschapv2_error_names, ERROR_AUTHENTICATION_FAILURE, ERROR_AUTHENTICATION_FAILURE, ERROR_NO_DIALIN_PERMISSION, + "ERROR_AUTHENTICATION_FAILURE"); +ENUM_NEXT(mschapv2_error_names, ERROR_CHANGING_PASSWORD, ERROR_CHANGING_PASSWORD, ERROR_AUTHENTICATION_FAILURE, + "ERROR_CHANGING_PASSWORD"); +ENUM_END(mschapv2_error_names, ERROR_CHANGING_PASSWORD); + +/* Length of the challenge */ +#define CHALLENGE_LEN 16 +/* Length of the response (see eap_mschapv2_response_t) */ +#define RESPONSE_LEN 49 +/* Length of the authenticator response string ("S=<...>") */ +#define AUTH_RESPONSE_LEN 42 +/* Name we send as authenticator */ +#define MSCHAPV2_HOST_NAME "strongSwan" +/* Message sent on success */ +#define SUCCESS_MESSAGE " M=Welcome2strongSwan" +/* Message sent on failure */ +#define FAILURE_MESSAGE "E=691 R=1 C=" +/* Length of the complete failure message */ +#define FAILURE_MESSAGE_LEN (sizeof(FAILURE_MESSAGE) + CHALLENGE_LEN * 2) + +/* Number of seconds to delay retries */ +#define RETRY_DELAY 2 +/* Maximum number of retries */ +#define MAX_RETRIES 2 + +typedef struct eap_mschapv2_header_t eap_mschapv2_header_t; +typedef struct eap_mschapv2_challenge_t eap_mschapv2_challenge_t; +typedef struct eap_mschapv2_response_t eap_mschapv2_response_t; + +/** + * packed EAP-MS-CHAPv2 header struct + */ +struct eap_mschapv2_header_t +{ + /** EAP code (REQUEST/RESPONSE) */ + u_int8_t code; + /** unique message identifier */ + u_int8_t identifier; + /** length of whole message */ + u_int16_t length; + /** EAP type */ + u_int8_t type; + /** MS-CHAPv2 OpCode */ + u_int8_t opcode; + /** MS-CHAPv2-ID (equals identifier) */ + u_int8_t ms_chapv2_id; + /** MS-Length (defined as length - 5) */ + u_int16_t ms_length; + /** packet data (determined by OpCode) */ + u_int8_t data[]; +}__attribute__((__packed__)); + +/** + * packed data for a MS-CHAPv2 Challenge packet + */ +struct eap_mschapv2_challenge_t +{ + /** Value-Size */ + u_int8_t value_size; + /** Challenge */ + u_int8_t challenge[CHALLENGE_LEN]; + /** Name */ + u_int8_t name[]; +}__attribute__((__packed__)); + +/** + * packed data for a MS-CHAPv2 Response packet + */ +struct eap_mschapv2_response_t +{ + /** Value-Size */ + u_int8_t value_size; + /** Response */ + struct + { + /* Peer-Challenge*/ + u_int8_t peer_challenge[CHALLENGE_LEN]; + /* Reserved (=zero) */ + u_int8_t peer_reserved[8]; + /* NT-Response */ + u_int8_t nt_response[24]; + /* Flags (=zero) */ + u_int8_t flags; + } response; + /** Name */ + u_int8_t name[]; +}__attribute__((__packed__)); + +/** + * Length of the MS-CHAPv2 header + */ +#define HEADER_LEN (sizeof(eap_mschapv2_header_t)) + +/** + * Length of the header for MS-CHAPv2 success/failure packets (does not include + * MS-CHAPv2-ID and MS-Length, i.e. 3 octets) + */ +#define SHORT_HEADER_LEN (HEADER_LEN - 3) + +/** + * The minimum length of an MS-CHAPv2 Challenge packet (the name MUST be + * at least one octet) + */ +#define CHALLENGE_PAYLOAD_LEN (HEADER_LEN + sizeof(eap_mschapv2_challenge_t)) + +/** + * The minimum length of an MS-CHAPv2 Response packet + */ +#define RESPONSE_PAYLOAD_LEN (HEADER_LEN + sizeof(eap_mschapv2_response_t)) + + +/** + * Expand a 56-bit key to a 64-bit DES key by adding parity bits (odd parity) + */ +static chunk_t ExpandDESKey(chunk_t key) +{ + static const u_char bitmask[] = { 0xfe, 0xfc, 0xf8, 0xf0, 0xe0, 0xc0, 0x80 }; + int i; + u_char carry = 0; + chunk_t expanded; + + /* expand the 7 octets to 8 octets */ + expanded = chunk_alloc(8); + for (i = 0; i < 7; i++) + { + expanded.ptr[i] = ((key.ptr[i] & bitmask[i]) >> i) | (carry << (8 - i)); + carry = key.ptr[i] & ~bitmask[i]; + } + expanded.ptr[7] = carry << 1; + + /* add parity bits to each octet */ + for (i = 0; i < 8; i++) + { + u_char val = expanded.ptr[i]; + val = (val ^ (val >> 4)) & 0x0f; + expanded.ptr[i] |= (0x9669 >> val) & 1; + } + return expanded; +} + +/** + * Calculate the NT password hash (i.e. hash the (unicode) password with MD4) + */ +static status_t NtPasswordHash(chunk_t password, chunk_t *password_hash) +{ + hasher_t *hasher; + hasher = lib->crypto->create_hasher(lib->crypto, HASH_MD4); + if (hasher == NULL) + { + DBG1(DBG_IKE, "EAP-MS-CHAPv2 failed, no MD4 hasher available"); + return FAILED; + } + hasher->allocate_hash(hasher, password, password_hash); + hasher->destroy(hasher); + return SUCCESS; +} + +/** + * Calculate the challenge hash (i.e. hash [peer_challenge | server_challenge | + * username (without domain part)] with SHA1) + */ +static status_t ChallengeHash(chunk_t peer_challenge, chunk_t server_challenge, + chunk_t username, chunk_t *challenge_hash) +{ + chunk_t concat; + hasher_t *hasher; + hasher = lib->crypto->create_hasher(lib->crypto, HASH_SHA1); + if (hasher == NULL) + { + DBG1(DBG_IKE, "EAP-MS-CHAPv2 failed, SHA1 not supported"); + return FAILED; + } + concat = chunk_cata("ccc", peer_challenge, server_challenge, username); + hasher->allocate_hash(hasher, concat, challenge_hash); + hasher->destroy(hasher); + /* we need only the first 8 octets */ + challenge_hash->len = 8; + return SUCCESS; +} + +/** + * Calculate the challenge response (i.e. expand password_hash to three DES keys + * and then encrypt the 8-octet challenge_hash with these keys and concatenate + * the results). + */ +static status_t ChallengeResponse(chunk_t challenge_hash, chunk_t password_hash, + chunk_t *response) +{ + int i; + crypter_t *crypter; + chunk_t keys[3], z_password_hash; + crypter = lib->crypto->create_crypter(lib->crypto, ENCR_DES_ECB, 8); + if (crypter == NULL) + { + DBG1(DBG_IKE, "EAP-MS-CHAPv2 failed, DES-ECB not supported"); + return FAILED; + } + /* prepare keys: first pad password_hash to 21 octets, these get then split + * into 7-octet chunks, which then get expanded into 8-octet DES keys */ + z_password_hash = chunk_alloca(21); + memset(z_password_hash.ptr, 0, z_password_hash.len); + memcpy(z_password_hash.ptr, password_hash.ptr, password_hash.len); + chunk_split(z_password_hash, "mmm", 7, &keys[0], 7, &keys[1], 7, &keys[2]); + + *response = chunk_alloc(24); + for (i = 0; i < 3; i++) + { + chunk_t expanded, encrypted; + expanded = ExpandDESKey(keys[i]); + crypter->set_key(crypter, expanded); + crypter->encrypt(crypter, challenge_hash, chunk_empty, &encrypted); + memcpy(&response->ptr[i * 8], encrypted.ptr, encrypted.len); + chunk_clear(&encrypted); + chunk_clear(&expanded); + } + crypter->destroy(crypter); + return SUCCESS; +} + +/** + * Computes the authenticator response + */ +static status_t AuthenticatorResponse(chunk_t password_hash_hash, + chunk_t challenge_hash, chunk_t nt_response, chunk_t *response) +{ + chunk_t magic1 = chunk_from_chars( + 0x4D, 0x61, 0x67, 0x69, 0x63, 0x20, 0x73, 0x65, 0x72, 0x76, + 0x65, 0x72, 0x20, 0x74, 0x6F, 0x20, 0x63, 0x6C, 0x69, 0x65, + 0x6E, 0x74, 0x20, 0x73, 0x69, 0x67, 0x6E, 0x69, 0x6E, 0x67, + 0x20, 0x63, 0x6F, 0x6E, 0x73, 0x74, 0x61, 0x6E, 0x74); + chunk_t magic2 = chunk_from_chars( + 0x50, 0x61, 0x64, 0x20, 0x74, 0x6F, 0x20, 0x6D, 0x61, 0x6B, + 0x65, 0x20, 0x69, 0x74, 0x20, 0x64, 0x6F, 0x20, 0x6D, 0x6F, + 0x72, 0x65, 0x20, 0x74, 0x68, 0x61, 0x6E, 0x20, 0x6F, 0x6E, + 0x65, 0x20, 0x69, 0x74, 0x65, 0x72, 0x61, 0x74, 0x69, 0x6F, + 0x6E); + chunk_t digest = chunk_empty, concat; + hasher_t *hasher; + + hasher = lib->crypto->create_hasher(lib->crypto, HASH_SHA1); + if (hasher == NULL) + { + DBG1(DBG_IKE, "EAP-MS-CHAPv2 failed, SHA1 not supported"); + return FAILED; + } + + concat = chunk_cata("ccc", password_hash_hash, nt_response, magic1); + hasher->allocate_hash(hasher, concat, &digest); + concat = chunk_cata("ccc", digest, challenge_hash, magic2); + hasher->allocate_hash(hasher, concat, response); + + hasher->destroy(hasher); + chunk_free(&digest); + return SUCCESS; +} + +/** + * Generate the master session key according to RFC3079 + */ +static status_t GenerateMSK(chunk_t password_hash_hash, + chunk_t nt_response, chunk_t *msk) +{ + chunk_t magic1 = chunk_from_chars( + 0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x74, + 0x68, 0x65, 0x20, 0x4d, 0x50, 0x50, 0x45, 0x20, 0x4d, + 0x61, 0x73, 0x74, 0x65, 0x72, 0x20, 0x4b, 0x65, 0x79); + chunk_t magic2 = chunk_from_chars( + 0x4f, 0x6e, 0x20, 0x74, 0x68, 0x65, 0x20, 0x63, 0x6c, 0x69, + 0x65, 0x6e, 0x74, 0x20, 0x73, 0x69, 0x64, 0x65, 0x2c, 0x20, + 0x74, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x74, 0x68, + 0x65, 0x20, 0x73, 0x65, 0x6e, 0x64, 0x20, 0x6b, 0x65, 0x79, + 0x3b, 0x20, 0x6f, 0x6e, 0x20, 0x74, 0x68, 0x65, 0x20, 0x73, + 0x65, 0x72, 0x76, 0x65, 0x72, 0x20, 0x73, 0x69, 0x64, 0x65, + 0x2c, 0x20, 0x69, 0x74, 0x20, 0x69, 0x73, 0x20, 0x74, 0x68, + 0x65, 0x20, 0x72, 0x65, 0x63, 0x65, 0x69, 0x76, 0x65, 0x20, + 0x6b, 0x65, 0x79, 0x2e); + chunk_t magic3 = chunk_from_chars( + 0x4f, 0x6e, 0x20, 0x74, 0x68, 0x65, 0x20, 0x63, 0x6c, 0x69, + 0x65, 0x6e, 0x74, 0x20, 0x73, 0x69, 0x64, 0x65, 0x2c, 0x20, + 0x74, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x74, 0x68, + 0x65, 0x20, 0x72, 0x65, 0x63, 0x65, 0x69, 0x76, 0x65, 0x20, + 0x6b, 0x65, 0x79, 0x3b, 0x20, 0x6f, 0x6e, 0x20, 0x74, 0x68, + 0x65, 0x20, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x20, 0x73, + 0x69, 0x64, 0x65, 0x2c, 0x20, 0x69, 0x74, 0x20, 0x69, 0x73, + 0x20, 0x74, 0x68, 0x65, 0x20, 0x73, 0x65, 0x6e, 0x64, 0x20, + 0x6b, 0x65, 0x79, 0x2e); + chunk_t shapad1 = chunk_from_chars( + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); + chunk_t shapad2 = chunk_from_chars( + 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, + 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, + 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, + 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2); + chunk_t keypad = chunk_from_chars( + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); + chunk_t concat, master_key, master_receive_key, master_send_key; + hasher_t *hasher; + + hasher = lib->crypto->create_hasher(lib->crypto, HASH_SHA1); + if (hasher == NULL) + { + DBG1(DBG_IKE, "EAP-MS-CHAPv2 failed, SHA1 not supported"); + return FAILED; + } + + concat = chunk_cata("ccc", password_hash_hash, nt_response, magic1); + hasher->allocate_hash(hasher, concat, &master_key); + master_key.len = 16; + + concat = chunk_cata("cccc", master_key, shapad1, magic2, shapad2); + hasher->allocate_hash(hasher, concat, &master_receive_key); + master_receive_key.len = 16; + + concat = chunk_cata("cccc", master_key, shapad1, magic3, shapad2); + hasher->allocate_hash(hasher, concat, &master_send_key); + master_send_key.len = 16; + + *msk = chunk_cat("cccc", master_receive_key, master_send_key, keypad, keypad); + + hasher->destroy(hasher); + chunk_free(&master_key); + chunk_free(&master_receive_key); + chunk_free(&master_send_key); + return SUCCESS; +} + +static status_t GenerateStuff(private_eap_mschapv2_t *this, + chunk_t server_challenge, chunk_t peer_challenge, + chunk_t username, chunk_t nt_hash) +{ + status_t status = FAILED; + chunk_t nt_hash_hash = chunk_empty, challenge_hash = chunk_empty; + + if (NtPasswordHash(nt_hash, &nt_hash_hash) != SUCCESS) + { + goto error; + } + if (ChallengeHash(peer_challenge, server_challenge, username, + &challenge_hash) != SUCCESS) + { + goto error; + } + if (ChallengeResponse(challenge_hash, nt_hash, + &this->nt_response) != SUCCESS) + { + goto error; + } + if (AuthenticatorResponse(nt_hash_hash, challenge_hash, + this->nt_response, &this->auth_response) != SUCCESS) + { + goto error; + } + if (GenerateMSK(nt_hash_hash, this->nt_response, &this->msk) != SUCCESS) + { + goto error; + } + + status = SUCCESS; + +error: + chunk_free(&nt_hash_hash); + chunk_free(&challenge_hash); + return status; +} + +/** + * Converts an ASCII string into a UTF-16 (little-endian) string + */ +static chunk_t ascii_to_unicode(chunk_t ascii) +{ + int i; + chunk_t unicode = chunk_alloc(ascii.len * 2); + for (i = 0; i < ascii.len; i++) + { + unicode.ptr[i * 2] = ascii.ptr[i]; + unicode.ptr[i * 2 + 1] = 0; + } + return unicode; +} + +/** + * sanitize a string for printing + */ +static char* sanitize(char *str) +{ + char *pos = str; + + while (pos && *pos) + { + if (!isprint(*pos)) + { + *pos = '?'; + } + pos++; + } + return str; +} + +/** + * Returns a chunk of just the username part of the given user identity. + * Note: the chunk points to internal data of the identification. + */ +static chunk_t extract_username(identification_t* identification) +{ + char *has_domain; + chunk_t id; + id = identification->get_encoding(identification); + has_domain = (char*)memchr(id.ptr, '\\', id.len); + if (has_domain) + { + int len; + has_domain++; /* skip the backslash */ + len = id.len - ((u_char*)has_domain - id.ptr); + return len > 0 ? chunk_create(has_domain, len) : chunk_empty; + } + return id; +} + +/** + * Set the ms_length field using aligned write + */ +static void set_ms_length(eap_mschapv2_header_t *eap, u_int16_t len) +{ + len = htons(len - 5); + memcpy(&eap->ms_length, &len, sizeof(u_int16_t)); +} + +/** + * Implementation of eap_method_t.initiate for the peer + */ +static status_t initiate_peer(private_eap_mschapv2_t *this, eap_payload_t **out) +{ + /* peer never initiates */ + return FAILED; +} + +/** + * Implementation of eap_method_t.initiate for the server + */ +static status_t initiate_server(private_eap_mschapv2_t *this, eap_payload_t **out) +{ + rng_t *rng; + eap_mschapv2_header_t *eap; + eap_mschapv2_challenge_t *cha; + const char *name = MSCHAPV2_HOST_NAME; + u_int16_t len = CHALLENGE_PAYLOAD_LEN + sizeof(MSCHAPV2_HOST_NAME) - 1; + + rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK); + if (!rng) + { + DBG1(DBG_IKE, "EAP-MS-CHAPv2 failed, no RNG"); + return FAILED; + } + rng->allocate_bytes(rng, CHALLENGE_LEN, &this->challenge); + rng->destroy(rng); + + eap = alloca(len); + eap->code = EAP_REQUEST; + eap->identifier = this->identifier; + eap->length = htons(len); + eap->type = EAP_MSCHAPV2; + eap->opcode = MSCHAPV2_CHALLENGE; + eap->ms_chapv2_id = this->mschapv2id; + set_ms_length(eap, len); + + cha = (eap_mschapv2_challenge_t*)eap->data; + cha->value_size = CHALLENGE_LEN; + memcpy(cha->challenge, this->challenge.ptr, this->challenge.len); + memcpy(cha->name, name, sizeof(MSCHAPV2_HOST_NAME) - 1); + + *out = eap_payload_create_data(chunk_create((void*) eap, len)); + return NEED_MORE; +} + +static bool get_nt_hash(private_eap_mschapv2_t *this, identification_t *me, + identification_t *other, chunk_t *nt_hash) +{ + shared_key_t *shared; + chunk_t password; + + /* try to find a stored NT_HASH first */ + shared = charon->credentials->get_shared(charon->credentials, + SHARED_NT_HASH, me, other); + if (shared ) + { + *nt_hash = chunk_clone(shared->get_key(shared)); + shared->destroy(shared); + return TRUE; + } + + /* fallback to plaintext password */ + shared = charon->credentials->get_shared(charon->credentials, + SHARED_EAP, me, other); + if (shared) + { + password = ascii_to_unicode(shared->get_key(shared)); + shared->destroy(shared); + + if (NtPasswordHash(password, nt_hash) == SUCCESS) + { + chunk_clear(&password); + return TRUE; + } + chunk_clear(&password); + } + return FALSE; +} + +/** + * Process MS-CHAPv2 Challenge Requests + */ +static status_t process_peer_challenge(private_eap_mschapv2_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + rng_t *rng; + eap_mschapv2_header_t *eap; + eap_mschapv2_challenge_t *cha; + eap_mschapv2_response_t *res; + chunk_t data, peer_challenge, username, nt_hash; + u_int16_t len = RESPONSE_PAYLOAD_LEN; + + data = in->get_data(in); + eap = (eap_mschapv2_header_t*)data.ptr; + + /* the name MUST be at least one octet long */ + if (data.len < CHALLENGE_PAYLOAD_LEN + 1) + { + DBG1(DBG_IKE, "received invalid EAP-MS-CHAPv2 message: too short"); + return FAILED; + } + + cha = (eap_mschapv2_challenge_t*)eap->data; + + if (cha->value_size != CHALLENGE_LEN) + { + DBG1(DBG_IKE, "received invalid EAP-MS-CHAPv2 message: " + "invalid challenge size"); + return FAILED; + } + + this->mschapv2id = eap->ms_chapv2_id; + this->challenge = chunk_clone(chunk_create(cha->challenge, CHALLENGE_LEN)); + + rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK); + if (!rng) + { + DBG1(DBG_IKE, "EAP-MS-CHAPv2 failed, no RNG"); + return FAILED; + } + peer_challenge = chunk_alloca(CHALLENGE_LEN); + rng->get_bytes(rng, CHALLENGE_LEN, peer_challenge.ptr); + rng->destroy(rng); + + if (!get_nt_hash(this, this->peer, this->server, &nt_hash)) + { + DBG1(DBG_IKE, "no EAP key found for hosts '%Y' - '%Y'", + this->server, this->peer); + return NOT_FOUND; + } + + username = extract_username(this->peer); + len += username.len; + + if (GenerateStuff(this, this->challenge, peer_challenge, + username, nt_hash) != SUCCESS) + { + DBG1(DBG_IKE, "EAP-MS-CHAPv2 generating NT-Response failed"); + chunk_clear(&nt_hash); + return FAILED; + } + chunk_clear(&nt_hash); + + eap = alloca(len); + eap->code = EAP_RESPONSE; + eap->identifier = this->identifier; + eap->length = htons(len); + eap->type = EAP_MSCHAPV2; + eap->opcode = MSCHAPV2_RESPONSE; + eap->ms_chapv2_id = this->mschapv2id; + set_ms_length(eap, len); + + res = (eap_mschapv2_response_t*)eap->data; + res->value_size = RESPONSE_LEN; + memset(&res->response, 0, RESPONSE_LEN); + memcpy(res->response.peer_challenge, peer_challenge.ptr, peer_challenge.len); + memcpy(res->response.nt_response, this->nt_response.ptr, this->nt_response.len); + + username = this->peer->get_encoding(this->peer); + memcpy(res->name, username.ptr, username.len); + + *out = eap_payload_create_data(chunk_create((void*) eap, len)); + return NEED_MORE; +} + +/** + * Process MS-CHAPv2 Success Requests + */ +static status_t process_peer_success(private_eap_mschapv2_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + status_t status = FAILED; + enumerator_t *enumerator; + eap_mschapv2_header_t *eap; + chunk_t data, auth_string = chunk_empty; + char *message, *token, *msg = NULL; + int message_len; + u_int16_t len = SHORT_HEADER_LEN; + + data = in->get_data(in); + eap = (eap_mschapv2_header_t*)data.ptr; + + if (data.len < AUTH_RESPONSE_LEN) + { + DBG1(DBG_IKE, "received invalid EAP-MS-CHAPv2 message: too short"); + return FAILED; + } + + message_len = data.len - HEADER_LEN; + message = malloc(message_len + 1); + memcpy(message, eap->data, message_len); + message[message_len] = '\0'; + + /* S=<auth_string> M=<msg> */ + enumerator = enumerator_create_token(message, " ", " "); + while (enumerator->enumerate(enumerator, &token)) + { + if (strneq(token, "S=", 2)) + { + chunk_t hex; + token += 2; + if (strlen(token) != AUTH_RESPONSE_LEN - 2) + { + DBG1(DBG_IKE, "received invalid EAP-MS-CHAPv2 message: " + "invalid auth string"); + goto error; + } + hex = chunk_create(token, AUTH_RESPONSE_LEN - 2); + auth_string = chunk_from_hex(hex, NULL); + } + else if (strneq(token, "M=", 2)) + { + token += 2; + msg = strdup(token); + } + } + enumerator->destroy(enumerator); + + if (auth_string.ptr == NULL) + { + DBG1(DBG_IKE, "received invalid EAP-MS-CHAPv2 message: " + "auth string missing"); + goto error; + } + + if (!chunk_equals(this->auth_response, auth_string)) + { + DBG1(DBG_IKE, "EAP-MS-CHAPv2 verification failed"); + goto error; + } + + DBG1(DBG_IKE, "EAP-MS-CHAPv2 succeeded: '%s'", sanitize(msg)); + + eap = alloca(len); + eap->code = EAP_RESPONSE; + eap->identifier = this->identifier; + eap->length = htons(len); + eap->type = EAP_MSCHAPV2; + eap->opcode = MSCHAPV2_SUCCESS; + + *out = eap_payload_create_data(chunk_create((void*) eap, len)); + status = NEED_MORE; + +error: + chunk_free(&auth_string); + free(message); + free(msg); + return status; +} + +static status_t process_peer_failure(private_eap_mschapv2_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + status_t status = FAILED; + enumerator_t *enumerator; + eap_mschapv2_header_t *eap; + chunk_t data; + char *message, *token, *msg = NULL; + int message_len, error, retryable; + chunk_t challenge = chunk_empty; + + data = in->get_data(in); + eap = (eap_mschapv2_header_t*)data.ptr; + + if (data.len < 3) /* we want at least an error code: E=e */ + { + DBG1(DBG_IKE, "received invalid EAP-MS-CHAPv2 message: too short"); + return FAILED; + } + + message_len = data.len - HEADER_LEN; + message = malloc(message_len + 1); + memcpy(message, eap->data, message_len); + message[message_len] = '\0'; + + /* E=eeeeeeeeee R=r C=cccccccccccccccccccccccccccccccc V=vvvvvvvvvv M=<msg> */ + enumerator = enumerator_create_token(message, " ", " "); + while (enumerator->enumerate(enumerator, &token)) + { + if (strneq(token, "E=", 2)) + { + token += 2; + error = atoi(token); + } + else if (strneq(token, "R=", 2)) + { + token += 2; + retryable = atoi(token); + } + else if (strneq(token, "C=", 2)) + { + chunk_t hex; + token += 2; + if (strlen(token) != 2 * CHALLENGE_LEN) + { + DBG1(DBG_IKE, "received invalid EAP-MS-CHAPv2 message:" + "invalid challenge"); + goto error; + } + hex = chunk_create(token, 2 * CHALLENGE_LEN); + challenge = chunk_from_hex(hex, NULL); + } + else if (strneq(token, "V=", 2)) + { + int version; + token += 2; + version = atoi(token); + } + else if (strneq(token, "M=", 2)) + { + token += 2; + msg = strdup(token); + } + } + enumerator->destroy(enumerator); + + DBG1(DBG_IKE, "EAP-MS-CHAPv2 failed with error %N: '%s'", + mschapv2_error_names, error, sanitize(msg)); + + /** + * at this point, if the error is retryable, we MAY retry the authentication + * or MAY send a Change Password packet. + * + * if the error is not retryable (or if we do neither of the above), we + * SHOULD send a Failure Response packet. + * windows clients don't do that, and since windows server 2008 r2 behaves + * pretty odd if we do send a Failure Response, we just don't send one + * either. windows 7 actually sends a delete notify (which, according to the + * logs, results in an error on windows server 2008 r2). + * + * btw, windows server 2008 r2 does not send non-retryable errors for e.g. + * a disabled account but returns the windows error code in a notify payload + * of type 12345. + */ + + status = FAILED; + +error: + chunk_free(&challenge); + free(message); + free(msg); + return status; +} + +/** + * Implementation of eap_method_t.process for the peer + */ +static status_t process_peer(private_eap_mschapv2_t *this, eap_payload_t *in, + eap_payload_t **out) +{ + chunk_t data; + eap_mschapv2_header_t *eap; + + this->identifier = in->get_identifier(in); + data = in->get_data(in); + if (data.len < SHORT_HEADER_LEN) + { + DBG1(DBG_IKE, "received invalid EAP-MS-CHAPv2 message"); + return FAILED; + } + + eap = (eap_mschapv2_header_t*)data.ptr; + + switch (eap->opcode) + { + case MSCHAPV2_CHALLENGE: + { + return process_peer_challenge(this, in, out); + } + case MSCHAPV2_SUCCESS: + { + return process_peer_success(this, in, out); + } + case MSCHAPV2_FAILURE: + { + return process_peer_failure(this, in, out); + } + default: + { + DBG1(DBG_IKE, "EAP-MS-CHAPv2 received packet with unsupported " + "OpCode (%N)!", mschapv2_opcode_names, eap->opcode); + break; + } + } + return FAILED; +} + +/** + * Handles retries on the server + */ +static status_t process_server_retry(private_eap_mschapv2_t *this, + eap_payload_t **out) +{ + eap_mschapv2_header_t *eap; + rng_t *rng; + chunk_t hex; + char msg[FAILURE_MESSAGE_LEN]; + u_int16_t len = HEADER_LEN + FAILURE_MESSAGE_LEN - 1; /* no null byte */ + + if (++this->retries > MAX_RETRIES) + { + /* we MAY send a Failure Request with R=0, but windows 7 does not + * really like that and does not respond with a Failure Response. + * so, to clean up our state we just fail with an EAP-Failure. + * this gives an unknown error on the windows side, but is also fine + * with the standard. */ + DBG1(DBG_IKE, "EAP-MS-CHAPv2 verification failed: " + "maximum number of retries reached"); + return FAILED; + } + + DBG1(DBG_IKE, "EAP-MS-CHAPv2 verification failed, retry (%d)", this->retries); + + rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK); + if (!rng) + { + DBG1(DBG_IKE, "EAP-MS-CHAPv2 failed, no RNG"); + return FAILED; + } + rng->get_bytes(rng, CHALLENGE_LEN, this->challenge.ptr); + rng->destroy(rng); + + chunk_free(&this->nt_response); + chunk_free(&this->auth_response); + chunk_free(&this->msk); + + eap = alloca(len); + eap->code = EAP_REQUEST; + eap->identifier = ++this->identifier; + eap->length = htons(len); + eap->type = EAP_MSCHAPV2; + eap->opcode = MSCHAPV2_FAILURE; + eap->ms_chapv2_id = this->mschapv2id++; /* increase for each retry */ + set_ms_length(eap, len); + + hex = chunk_to_hex(this->challenge, NULL, TRUE); + snprintf(msg, FAILURE_MESSAGE_LEN, "%s%s", FAILURE_MESSAGE, hex.ptr); + chunk_free(&hex); + memcpy(eap->data, msg, FAILURE_MESSAGE_LEN - 1); /* no null byte */ + *out = eap_payload_create_data(chunk_create((void*) eap, len)); + + /* delay the response for some time to make brute-force attacks harder */ + sleep(RETRY_DELAY); + + return NEED_MORE; +} + +/** + * Process MS-CHAPv2 Response response packets + */ +static status_t process_server_response(private_eap_mschapv2_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + eap_mschapv2_header_t *eap; + eap_mschapv2_response_t *res; + chunk_t data, peer_challenge, username, nt_hash; + identification_t *userid; + int name_len; + char buf[256]; + + data = in->get_data(in); + eap = (eap_mschapv2_header_t*)data.ptr; + + if (data.len < RESPONSE_PAYLOAD_LEN) + { + DBG1(DBG_IKE, "received invalid EAP-MS-CHAPv2 message: too short"); + return FAILED; + } + + res = (eap_mschapv2_response_t*)eap->data; + peer_challenge = chunk_create(res->response.peer_challenge, CHALLENGE_LEN); + + name_len = min(data.len - RESPONSE_PAYLOAD_LEN, 255); + snprintf(buf, sizeof(buf), "%.*s", name_len, res->name); + userid = identification_create_from_string(buf); + DBG2(DBG_IKE, "EAP-MS-CHAPv2 username: '%Y'", userid); + username = extract_username(userid); + + if (!get_nt_hash(this, this->server, userid, &nt_hash)) + { + DBG1(DBG_IKE, "no EAP key found for hosts '%Y' - '%Y'", + this->server, userid); + /* FIXME: windows 7 always sends the username that is first entered in + * the username box, even, if the user changes it during retries (probably + * to keep consistent with the EAP-Identity). + * thus, we could actually fail here, because retries do not make much + * sense. on the other hand, an attacker could guess usernames, if the + * error messages were different. */ + userid->destroy(userid); + return process_server_retry(this, out); + } + + if (GenerateStuff(this, this->challenge, peer_challenge, + username, nt_hash) != SUCCESS) + { + DBG1(DBG_IKE, "EAP-MS-CHAPv2 verification failed"); + userid->destroy(userid); + chunk_clear(&nt_hash); + return FAILED; + } + userid->destroy(userid); + chunk_clear(&nt_hash); + + if (memeq(res->response.nt_response, this->nt_response.ptr, + this->nt_response.len)) + { + chunk_t hex; + char msg[AUTH_RESPONSE_LEN + sizeof(SUCCESS_MESSAGE)]; + u_int16_t len = HEADER_LEN + AUTH_RESPONSE_LEN + sizeof(SUCCESS_MESSAGE); + + eap = alloca(len); + eap->code = EAP_REQUEST; + eap->identifier = ++this->identifier; + eap->length = htons(len); + eap->type = EAP_MSCHAPV2; + eap->opcode = MSCHAPV2_SUCCESS; + eap->ms_chapv2_id = this->mschapv2id; + set_ms_length(eap, len); + + hex = chunk_to_hex(this->auth_response, NULL, TRUE); + snprintf(msg, AUTH_RESPONSE_LEN + sizeof(SUCCESS_MESSAGE), + "S=%s%s", hex.ptr, SUCCESS_MESSAGE); + chunk_free(&hex); + memcpy(eap->data, msg, AUTH_RESPONSE_LEN + sizeof(SUCCESS_MESSAGE)); + *out = eap_payload_create_data(chunk_create((void*) eap, len)); + return NEED_MORE; + } + + return process_server_retry(this, out); +} + +/** + * Implementation of eap_method_t.process for the server + */ +static status_t process_server(private_eap_mschapv2_t *this, eap_payload_t *in, + eap_payload_t **out) +{ + eap_mschapv2_header_t *eap; + chunk_t data; + + if (this->identifier != in->get_identifier(in)) + { + DBG1(DBG_IKE, "received invalid EAP-MS-CHAPv2 message: " + "unexpected identifier"); + return FAILED; + } + + data = in->get_data(in); + if (data.len < SHORT_HEADER_LEN) + { + DBG1(DBG_IKE, "received invalid EAP-MS-CHAPv2 message: too short"); + return FAILED; + } + + eap = (eap_mschapv2_header_t*)data.ptr; + + switch (eap->opcode) + { + case MSCHAPV2_RESPONSE: + { + return process_server_response(this, in, out); + } + case MSCHAPV2_SUCCESS: + { + return SUCCESS; + } + case MSCHAPV2_FAILURE: + { + return FAILED; + } + default: + { + DBG1(DBG_IKE, "EAP-MS-CHAPv2 received packet with unsupported " + "OpCode (%N)!", mschapv2_opcode_names, eap->opcode); + break; + } + } + return FAILED; +} + +/** + * Implementation of eap_method_t.get_type. + */ +static eap_type_t get_type(private_eap_mschapv2_t *this, u_int32_t *vendor) +{ + *vendor = 0; + return EAP_MSCHAPV2; +} + +/** + * Implementation of eap_method_t.get_msk. + */ +static status_t get_msk(private_eap_mschapv2_t *this, chunk_t *msk) +{ + if (this->msk.ptr) + { + *msk = this->msk; + return SUCCESS; + } + return FAILED; +} + +/** + * Implementation of eap_method_t.is_mutual. + */ +static bool is_mutual(private_eap_mschapv2_t *this) +{ + return FALSE; +} + +/** + * Implementation of eap_method_t.destroy. + */ +static void destroy(private_eap_mschapv2_t *this) +{ + this->peer->destroy(this->peer); + this->server->destroy(this->server); + chunk_free(&this->challenge); + chunk_free(&this->nt_response); + chunk_free(&this->auth_response); + chunk_free(&this->msk); + free(this); +} + +/** + * Generic constructor + */ +static private_eap_mschapv2_t *eap_mschapv2_create_generic(identification_t *server, identification_t *peer) +{ + private_eap_mschapv2_t *this = malloc_thing(private_eap_mschapv2_t); + + this->public.eap_method_interface.initiate = NULL; + this->public.eap_method_interface.process = NULL; + this->public.eap_method_interface.get_type = (eap_type_t(*)(eap_method_t*,u_int32_t*))get_type; + this->public.eap_method_interface.is_mutual = (bool(*)(eap_method_t*))is_mutual; + this->public.eap_method_interface.get_msk = (status_t(*)(eap_method_t*,chunk_t*))get_msk; + this->public.eap_method_interface.destroy = (void(*)(eap_method_t*))destroy; + + /* private data */ + this->peer = peer->clone(peer); + this->server = server->clone(server); + this->challenge = chunk_empty; + this->nt_response = chunk_empty; + this->auth_response = chunk_empty; + this->msk = chunk_empty; + this->identifier = 0; + this->mschapv2id = 0; + this->retries = 0; + + return this; +} + +/* + * see header + */ +eap_mschapv2_t *eap_mschapv2_create_server(identification_t *server, identification_t *peer) +{ + private_eap_mschapv2_t *this = eap_mschapv2_create_generic(server, peer); + + this->public.eap_method_interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate_server; + this->public.eap_method_interface.process = (status_t(*)(eap_method_t*,eap_payload_t*, eap_payload_t**))process_server; + + /* generate a non-zero identifier */ + do + { + this->identifier = random(); + } while (!this->identifier); + + this->mschapv2id = this->identifier; + + return &this->public; +} + +/* + * see header + */ +eap_mschapv2_t *eap_mschapv2_create_peer(identification_t *server, identification_t *peer) +{ + private_eap_mschapv2_t *this = eap_mschapv2_create_generic(server, peer); + + this->public.eap_method_interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate_peer; + this->public.eap_method_interface.process = (status_t(*)(eap_method_t*,eap_payload_t*, eap_payload_t**))process_peer; + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_mschapv2/eap_mschapv2.h b/src/libcharon/plugins/eap_mschapv2/eap_mschapv2.h new file mode 100644 index 000000000..34cc1141e --- /dev/null +++ b/src/libcharon/plugins/eap_mschapv2/eap_mschapv2.h @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2009 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_mschapv2_i eap_mschapv2 + * @{ @ingroup eap_mschapv2 + */ + +#ifndef EAP_MSCHAPV2_H_ +#define EAP_MSCHAPV2_H_ + +typedef struct eap_mschapv2_t eap_mschapv2_t; + +#include <sa/authenticators/eap/eap_method.h> + +/** + * Implementation of the eap_method_t interface using EAP-MS-CHAPv2. + */ +struct eap_mschapv2_t { + + /** + * Implemented eap_method_t interface. + */ + eap_method_t eap_method_interface; +}; + +/** + * Creates the EAP method EAP-MS-CHAPv2 acting as server. + * + * @param server ID of the EAP server + * @param peer ID of the EAP client + * @return eap_mschapv2_t object + */ +eap_mschapv2_t *eap_mschapv2_create_server(identification_t *server, identification_t *peer); + +/** + * Creates the EAP method EAP-MS-CHAPv2 acting as peer. + * + * @param server ID of the EAP server + * @param peer ID of the EAP client + * @return eap_mschapv2_t object + */ +eap_mschapv2_t *eap_mschapv2_create_peer(identification_t *server, identification_t *peer); + +#endif /** EAP_MSCHAPV2_H_ @}*/ diff --git a/src/libcharon/plugins/eap_mschapv2/eap_mschapv2_plugin.c b/src/libcharon/plugins/eap_mschapv2/eap_mschapv2_plugin.c new file mode 100644 index 000000000..a7b41ddbf --- /dev/null +++ b/src/libcharon/plugins/eap_mschapv2/eap_mschapv2_plugin.c @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2009 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_mschapv2_plugin.h" + +#include "eap_mschapv2.h" + +#include <daemon.h> + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(eap_mschapv2_plugin_t *this) +{ + charon->eap->remove_method(charon->eap, + (eap_constructor_t)eap_mschapv2_create_server); + charon->eap->remove_method(charon->eap, + (eap_constructor_t)eap_mschapv2_create_peer); + free(this); +} + +/* + * see header file + */ +plugin_t *eap_mschapv2_plugin_create() +{ + eap_mschapv2_plugin_t *this = malloc_thing(eap_mschapv2_plugin_t); + + this->plugin.destroy = (void(*)(plugin_t*))destroy; + + charon->eap->add_method(charon->eap, EAP_MSCHAPV2, 0, EAP_SERVER, + (eap_constructor_t)eap_mschapv2_create_server); + charon->eap->add_method(charon->eap, EAP_MSCHAPV2, 0, EAP_PEER, + (eap_constructor_t)eap_mschapv2_create_peer); + + return &this->plugin; +} + diff --git a/src/libcharon/plugins/eap_mschapv2/eap_mschapv2_plugin.h b/src/libcharon/plugins/eap_mschapv2/eap_mschapv2_plugin.h new file mode 100644 index 000000000..f250a9d47 --- /dev/null +++ b/src/libcharon/plugins/eap_mschapv2/eap_mschapv2_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2009 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_mschapv2 eap_mschapv2 + * @ingroup cplugins + * + * @defgroup eap_mschapv2_plugin eap_mschapv2_plugin + * @{ @ingroup eap_mschapv2 + */ + +#ifndef EAP_MSCHAPV2_PLUGIN_H_ +#define EAP_MSCHAPV2_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct eap_mschapv2_plugin_t eap_mschapv2_plugin_t; + +/** + * EAP-MS-CHAPv2 plugin + */ +struct eap_mschapv2_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** EAP_MSCHAPV2_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/eap_radius/Makefile.am b/src/libcharon/plugins/eap_radius/Makefile.am new file mode 100644 index 000000000..a3abd4124 --- /dev/null +++ b/src/libcharon/plugins/eap_radius/Makefile.am @@ -0,0 +1,19 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-eap-radius.la 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uninstall-pluginLTLIBRARIES + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/eap_radius/eap_radius.c b/src/libcharon/plugins/eap_radius/eap_radius.c new file mode 100644 index 000000000..f041fda54 --- /dev/null +++ b/src/libcharon/plugins/eap_radius/eap_radius.c @@ -0,0 +1,312 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_radius.h" + +#include "radius_message.h" +#include "radius_client.h" + +#include <daemon.h> + +typedef struct private_eap_radius_t private_eap_radius_t; + +/** + * Private data of an eap_radius_t object. + */ +struct private_eap_radius_t { + + /** + * Public authenticator_t interface. + */ + eap_radius_t public; + + /** + * ID of the server + */ + identification_t *server; + + /** + * ID of the peer + */ + identification_t *peer; + + /** + * EAP method type we are proxying + */ + eap_type_t type; + + /** + * EAP vendor, if any + */ + u_int32_t vendor; + + /** + * EAP MSK, if method established one + */ + chunk_t msk; + + /** + * RADIUS client instance + */ + radius_client_t *client; + + /** + * TRUE to use EAP-Start, FALSE to send EAP-Identity Response directly + */ + bool eap_start; + + /** + * Prefix to prepend to EAP identity + */ + char *id_prefix; +}; + +/** + * Add EAP-Identity to RADIUS message + */ +static void add_eap_identity(private_eap_radius_t *this, + radius_message_t *request) +{ + struct { + /** EAP code (REQUEST/RESPONSE) */ + u_int8_t code; + /** unique message identifier */ + u_int8_t identifier; + /** length of whole message */ + u_int16_t length; + /** EAP type */ + u_int8_t type; + /** identity data */ + u_int8_t data[]; + } __attribute__((__packed__)) *hdr; + chunk_t id, prefix; + size_t len; + + id = this->peer->get_encoding(this->peer); + prefix = chunk_create(this->id_prefix, strlen(this->id_prefix)); + len = sizeof(*hdr) + prefix.len + id.len; + + hdr = alloca(len); + hdr->code = EAP_RESPONSE; + hdr->identifier = 0; + hdr->length = htons(len); + hdr->type = EAP_IDENTITY; + memcpy(hdr->data, prefix.ptr, prefix.len); + memcpy(hdr->data + prefix.len, id.ptr, id.len); + + request->add(request, RAT_EAP_MESSAGE, chunk_create((u_char*)hdr, len)); +} + +/** + * Copy EAP-Message attribute from RADIUS message to an new EAP payload + */ +static bool radius2ike(private_eap_radius_t *this, + radius_message_t *msg, eap_payload_t **out) +{ + enumerator_t *enumerator; + eap_payload_t *payload; + chunk_t data, message = chunk_empty; + int type; + + enumerator = msg->create_enumerator(msg); + while (enumerator->enumerate(enumerator, &type, &data)) + { + if (type == RAT_EAP_MESSAGE && data.len) + { + message = chunk_cat("mc", message, data); + } + } + enumerator->destroy(enumerator); + if (message.len) + { + *out = payload = eap_payload_create_data(message); + free(message.ptr); + /* apply EAP method selected by RADIUS server */ + this->type = payload->get_type(payload, &this->vendor); + return TRUE; + } + return FALSE; +} + +/** + * Implementation of eap_method_t.initiate + */ +static status_t initiate(private_eap_radius_t *this, eap_payload_t **out) +{ + radius_message_t *request, *response; + status_t status = FAILED; + chunk_t username; + + request = radius_message_create_request(); + username = chunk_create(this->id_prefix, strlen(this->id_prefix)); + username = chunk_cata("cc", username, this->peer->get_encoding(this->peer)); + request->add(request, RAT_USER_NAME, username); + + if (this->eap_start) + { + request->add(request, RAT_EAP_MESSAGE, chunk_empty); + } + else + { + add_eap_identity(this, request); + } + + response = this->client->request(this->client, request); + if (response) + { + if (radius2ike(this, response, out)) + { + status = NEED_MORE; + } + response->destroy(response); + } + request->destroy(request); + return status; +} + +/** + * Implementation of eap_method_t.process + */ +static status_t process(private_eap_radius_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + radius_message_t *request, *response; + status_t status = FAILED; + chunk_t data; + + request = radius_message_create_request(); + request->add(request, RAT_USER_NAME, this->peer->get_encoding(this->peer)); + data = in->get_data(in); + /* fragment data suitable for RADIUS (not more than 253 bytes) */ + while (data.len > 253) + { + request->add(request, RAT_EAP_MESSAGE, chunk_create(data.ptr, 253)); + data = chunk_skip(data, 253); + } + request->add(request, RAT_EAP_MESSAGE, data); + + response = this->client->request(this->client, request); + if (response) + { + switch (response->get_code(response)) + { + case RMC_ACCESS_CHALLENGE: + if (radius2ike(this, response, out)) + { + status = NEED_MORE; + break; + } + status = FAILED; + break; + case RMC_ACCESS_ACCEPT: + this->msk = this->client->decrypt_msk(this->client, + response, request); + status = SUCCESS; + break; + case RMC_ACCESS_REJECT: + default: + DBG1(DBG_CFG, "received %N from RADIUS server", + radius_message_code_names, response->get_code(response)); + status = FAILED; + break; + } + response->destroy(response); + } + request->destroy(request); + return status; +} + +/** + * Implementation of eap_method_t.get_type. + */ +static eap_type_t get_type(private_eap_radius_t *this, u_int32_t *vendor) +{ + *vendor = this->vendor; + return this->type; +} + +/** + * Implementation of eap_method_t.get_msk. + */ +static status_t get_msk(private_eap_radius_t *this, chunk_t *msk) +{ + if (this->msk.ptr) + { + *msk = this->msk; + return SUCCESS; + } + return FAILED; +} + +/** + * Implementation of eap_method_t.is_mutual. + */ +static bool is_mutual(private_eap_radius_t *this) +{ + switch (this->type) + { + case EAP_AKA: + case EAP_SIM: + return TRUE; + default: + return FALSE; + } +} + +/** + * Implementation of eap_method_t.destroy. + */ +static void destroy(private_eap_radius_t *this) +{ + this->peer->destroy(this->peer); + this->server->destroy(this->server); + this->client->destroy(this->client); + chunk_clear(&this->msk); + free(this); +} + +/** + * Generic constructor + */ +eap_radius_t *eap_radius_create(identification_t *server, identification_t *peer) +{ + private_eap_radius_t *this = malloc_thing(private_eap_radius_t); + + this->public.eap_method_interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate; + this->public.eap_method_interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process; + this->public.eap_method_interface.get_type = (eap_type_t(*)(eap_method_t*,u_int32_t*))get_type; + this->public.eap_method_interface.is_mutual = (bool(*)(eap_method_t*))is_mutual; + this->public.eap_method_interface.get_msk = (status_t(*)(eap_method_t*,chunk_t*))get_msk; + this->public.eap_method_interface.destroy = (void(*)(eap_method_t*))destroy; + + this->client = radius_client_create(); + if (!this->client) + { + free(this); + return NULL; + } + this->peer = peer->clone(peer); + this->server = server->clone(server); + /* initially EAP_RADIUS, but is set to the method selected by RADIUS */ + this->type = EAP_RADIUS; + this->vendor = 0; + this->msk = chunk_empty; + this->eap_start = lib->settings->get_bool(lib->settings, + "charon.plugins.eap-radius.eap_start", FALSE); + this->id_prefix = lib->settings->get_str(lib->settings, + "charon.plugins.eap-radius.id_prefix", ""); + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_radius/eap_radius.h b/src/libcharon/plugins/eap_radius/eap_radius.h new file mode 100644 index 000000000..8eb9e8c2d --- /dev/null +++ b/src/libcharon/plugins/eap_radius/eap_radius.h @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_radius_i eap_radius + * @{ @ingroup eap_radius + */ + +#ifndef EAP_RADIUS_H_ +#define EAP_RADIUS_H_ + +typedef struct eap_radius_t eap_radius_t; + +#include <sa/authenticators/eap/eap_method.h> + +/** + * Implementation of the eap_method_t interface using a RADIUS server. + */ +struct eap_radius_t { + + /** + * Implemented eap_method_t interface. + */ + eap_method_t eap_method_interface; +}; + +/** + * Create a EAP RADIUS proxy. + * + * @param server ID of the EAP server + * @param peer ID of the EAP client + * @return eap_radius_t object + */ +eap_radius_t *eap_radius_create(identification_t *server, identification_t *peer); + +#endif /** EAP_RADIUS_H_ @}*/ diff --git a/src/libcharon/plugins/eap_radius/eap_radius_plugin.c b/src/libcharon/plugins/eap_radius/eap_radius_plugin.c new file mode 100644 index 000000000..7d2788c3e --- /dev/null +++ b/src/libcharon/plugins/eap_radius/eap_radius_plugin.c @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_radius_plugin.h" + +#include "eap_radius.h" +#include "radius_client.h" + +#include <daemon.h> + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(eap_radius_plugin_t *this) +{ + charon->eap->remove_method(charon->eap, (eap_constructor_t)eap_radius_create); + radius_client_cleanup(); + free(this); +} + +/* + * see header file + */ +plugin_t *eap_radius_plugin_create() +{ + eap_radius_plugin_t *this; + + if (!radius_client_init()) + { + DBG1(DBG_CFG, "RADIUS plugin initialization failed"); + return NULL; + } + + this = malloc_thing(eap_radius_plugin_t); + this->plugin.destroy = (void(*)(plugin_t*))destroy; + + charon->eap->add_method(charon->eap, EAP_RADIUS, 0, + EAP_SERVER, (eap_constructor_t)eap_radius_create); + + return &this->plugin; +} + diff --git a/src/libcharon/plugins/eap_radius/eap_radius_plugin.h b/src/libcharon/plugins/eap_radius/eap_radius_plugin.h new file mode 100644 index 000000000..f2b8b5082 --- /dev/null +++ b/src/libcharon/plugins/eap_radius/eap_radius_plugin.h @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_radius eap_radius + * @ingroup cplugins + * + * @defgroup eap_radius_plugin eap_radius_plugin + * @{ @ingroup eap_radius + */ + +#ifndef EAP_RADIUS_PLUGIN_H_ +#define EAP_RADIUS_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct eap_radius_plugin_t eap_radius_plugin_t; + +/** + * EAP RADIUS proxy plugin. + * + * This plugin provides not a single EAP method, but a proxy to forwared + * EAP packets to a RADIUS server. It only provides server implementations. + */ +struct eap_radius_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** EAP_RADIUS_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/eap_radius/radius_client.c b/src/libcharon/plugins/eap_radius/radius_client.c new file mode 100644 index 000000000..1d1f21742 --- /dev/null +++ b/src/libcharon/plugins/eap_radius/radius_client.c @@ -0,0 +1,495 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "radius_client.h" + +#include <unistd.h> +#include <errno.h> + +#include <daemon.h> +#include <utils/host.h> +#include <utils/linked_list.h> +#include <threading/condvar.h> +#include <threading/mutex.h> + +/** + * Default RADIUS server port, when not configured + */ +#define RADIUS_PORT 1812 + +/** + * Vendor-Id of Microsoft specific attributes + */ +#define VENDOR_ID_MICROSOFT 311 + +/** + * Microsoft specific vendor attributes + */ +#define MS_MPPE_SEND_KEY 16 +#define MS_MPPE_RECV_KEY 17 + +typedef struct private_radius_client_t private_radius_client_t; + +typedef struct entry_t entry_t; + +/** + * A socket pool entry. + */ +struct entry_t { + /** socket file descriptor */ + int fd; + /** current RADIUS identifier */ + u_int8_t identifier; + /** hasher to use for response verification */ + hasher_t *hasher; + /** HMAC-MD5 signer to build Message-Authenticator attribute */ + signer_t *signer; + /** random number generator for RADIUS request authenticator */ + rng_t *rng; +}; + +/** + * Private data of an radius_client_t object. + */ +struct private_radius_client_t { + + /** + * Public radius_client_t interface. + */ + radius_client_t public; + + /** + * RADIUS servers State attribute + */ + chunk_t state; +}; + +/** + * Global list of radius sockets, contains entry_t's + */ +static linked_list_t *sockets; + +/** + * mutex to lock sockets list + */ +static mutex_t *mutex; + +/** + * condvar to wait for sockets + */ +static condvar_t *condvar; + +/** + * RADIUS secret + */ +static chunk_t secret; + +/** + * NAS-Identifier + */ +static chunk_t nas_identifier; + +/** + * Clean up socket list + */ +void radius_client_cleanup() +{ + entry_t *entry; + + mutex->destroy(mutex); + condvar->destroy(condvar); + while (sockets->remove_last(sockets, (void**)&entry) == SUCCESS) + { + entry->rng->destroy(entry->rng); + entry->hasher->destroy(entry->hasher); + entry->signer->destroy(entry->signer); + close(entry->fd); + free(entry); + } + sockets->destroy(sockets); +} + +/** + * Initialize the socket list + */ +bool radius_client_init() +{ + int i, count, fd; + u_int16_t port; + entry_t *entry; + host_t *host; + char *server; + + nas_identifier.ptr = lib->settings->get_str(lib->settings, + "charon.plugins.eap-radius.nas_identifier", "strongSwan"); + nas_identifier.len = strlen(nas_identifier.ptr); + + secret.ptr = lib->settings->get_str(lib->settings, + "charon.plugins.eap-radius.secret", NULL); + if (!secret.ptr) + { + DBG1(DBG_CFG, "no RADUIS secret defined"); + return FALSE; + } + secret.len = strlen(secret.ptr); + server = lib->settings->get_str(lib->settings, + "charon.plugins.eap-radius.server", NULL); + if (!server) + { + DBG1(DBG_CFG, "no RADUIS server defined"); + return FALSE; + } + port = lib->settings->get_int(lib->settings, + "charon.plugins.eap-radius.port", RADIUS_PORT); + host = host_create_from_dns(server, 0, port); + if (!host) + { + return FALSE; + } + count = lib->settings->get_int(lib->settings, + "charon.plugins.eap-radius.sockets", 1); + + sockets = linked_list_create(); + mutex = mutex_create(MUTEX_TYPE_DEFAULT); + condvar = condvar_create(CONDVAR_TYPE_DEFAULT); + for (i = 0; i < count; i++) + { + fd = socket(host->get_family(host), SOCK_DGRAM, IPPROTO_UDP); + if (fd < 0) + { + DBG1(DBG_CFG, "opening RADIUS socket failed"); + host->destroy(host); + radius_client_cleanup(); + return FALSE; + } + if (connect(fd, host->get_sockaddr(host), + *host->get_sockaddr_len(host)) < 0) + { + DBG1(DBG_CFG, "connecting RADIUS socket failed"); + host->destroy(host); + radius_client_cleanup(); + return FALSE; + } + entry = malloc_thing(entry_t); + entry->fd = fd; + /* we use per-socket crypto elements: this reduces overhead, but + * is still thread-save. */ + entry->hasher = lib->crypto->create_hasher(lib->crypto, HASH_MD5); + entry->signer = lib->crypto->create_signer(lib->crypto, AUTH_HMAC_MD5_128); + entry->rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK); + if (!entry->hasher || !entry->signer || !entry->rng) + { + DBG1(DBG_CFG, "RADIUS initialization failed, HMAC/MD5/RNG required"); + DESTROY_IF(entry->hasher); + DESTROY_IF(entry->signer); + DESTROY_IF(entry->rng); + free(entry); + host->destroy(host); + radius_client_cleanup(); + return FALSE; + } + entry->signer->set_key(entry->signer, secret); + /* we use a random identifier, helps if we restart often (testing) */ + entry->identifier = random(); + sockets->insert_last(sockets, entry); + } + host->destroy(host); + return TRUE; +} + +/** + * Get a socket from the pool, block if none available + */ +static entry_t* get_socket() +{ + entry_t *entry; + + mutex->lock(mutex); + while (sockets->remove_first(sockets, (void**)&entry) != SUCCESS) + { + condvar->wait(condvar, mutex); + } + mutex->unlock(mutex); + return entry; +} + +/** + * Release a socket to the pool + */ +static void put_socket(entry_t *entry) +{ + mutex->lock(mutex); + sockets->insert_last(sockets, entry); + mutex->unlock(mutex); + condvar->signal(condvar); +} + +/** + * Save the state attribute to include in further request + */ +static void save_state(private_radius_client_t *this, radius_message_t *msg) +{ + enumerator_t *enumerator; + int type; + chunk_t data; + + enumerator = msg->create_enumerator(msg); + while (enumerator->enumerate(enumerator, &type, &data)) + { + if (type == RAT_STATE) + { + free(this->state.ptr); + this->state = chunk_clone(data); + enumerator->destroy(enumerator); + return; + } + } + enumerator->destroy(enumerator); + /* no state attribute found, remove state */ + chunk_free(&this->state); +} + +/** + * Implementation of radius_client_t.request + */ +static radius_message_t* request(private_radius_client_t *this, + radius_message_t *req) +{ + char virtual[] = {0x00,0x00,0x00,0x05}; + entry_t *socket; + chunk_t data; + int i; + + socket = get_socket(); + + /* set Message Identifier */ + req->set_identifier(req, socket->identifier++); + /* we add the "Virtual" NAS-Port-Type, as we SHOULD include one */ + req->add(req, RAT_NAS_PORT_TYPE, chunk_create(virtual, sizeof(virtual))); + /* add our NAS-Identifier */ + req->add(req, RAT_NAS_IDENTIFIER, nas_identifier); + /* add State attribute, if server sent one */ + if (this->state.ptr) + { + req->add(req, RAT_STATE, this->state); + } + /* sign the request */ + req->sign(req, socket->rng, socket->signer); + + data = req->get_encoding(req); + /* timeout after 2, 3, 4, 5 seconds */ + for (i = 2; i <= 5; i++) + { + radius_message_t *response; + bool retransmit = FALSE; + struct timeval tv; + char buf[4096]; + fd_set fds; + int res; + + if (send(socket->fd, data.ptr, data.len, 0) != data.len) + { + DBG1(DBG_CFG, "sending RADIUS message failed: %s", strerror(errno)); + put_socket(socket); + return NULL; + } + tv.tv_sec = i; + tv.tv_usec = 0; + + while (TRUE) + { + FD_ZERO(&fds); + FD_SET(socket->fd, &fds); + res = select(socket->fd + 1, &fds, NULL, NULL, &tv); + /* TODO: updated tv to time not waited. Linux does this for us. */ + if (res < 0) + { /* failed */ + DBG1(DBG_CFG, "waiting for RADIUS message failed: %s", + strerror(errno)); + break; + } + if (res == 0) + { /* timeout */ + DBG1(DBG_CFG, "retransmitting RADIUS message"); + retransmit = TRUE; + break; + } + res = recv(socket->fd, buf, sizeof(buf), MSG_DONTWAIT); + if (res <= 0) + { + DBG1(DBG_CFG, "receiving RADIUS message failed: %s", + strerror(errno)); + break; + } + response = radius_message_parse_response(chunk_create(buf, res)); + if (response) + { + if (response->verify(response, req->get_authenticator(req), + secret, socket->hasher, socket->signer)) + { + save_state(this, response); + put_socket(socket); + return response; + } + response->destroy(response); + } + DBG1(DBG_CFG, "received invalid RADIUS message, ignored"); + } + if (!retransmit) + { + break; + } + } + DBG1(DBG_CFG, "RADIUS server is not responding"); + put_socket(socket); + charon->bus->alert(charon->bus, ALERT_RADIUS_NOT_RESPONDING); + return NULL; +} + +/** + * Decrypt a MS-MPPE-Send/Recv-Key + */ +static chunk_t decrypt_mppe_key(private_radius_client_t *this, u_int16_t salt, + chunk_t C, radius_message_t *request) +{ + chunk_t A, R, P, seed; + u_char *c, *p; + hasher_t *hasher; + + /** + * From RFC2548 (encryption): + * b(1) = MD5(S + R + A) c(1) = p(1) xor b(1) C = c(1) + * b(2) = MD5(S + c(1)) c(2) = p(2) xor b(2) C = C + c(2) + * . . . + * b(i) = MD5(S + c(i-1)) c(i) = p(i) xor b(i) C = C + c(i) + */ + + if (C.len % HASH_SIZE_MD5 || C.len < HASH_SIZE_MD5) + { + return chunk_empty; + } + + hasher = lib->crypto->create_hasher(lib->crypto, HASH_MD5); + if (!hasher) + { + return chunk_empty; + } + + A = chunk_create((u_char*)&salt, sizeof(salt)); + R = chunk_create(request->get_authenticator(request), HASH_SIZE_MD5); + P = chunk_alloca(C.len); + p = P.ptr; + c = C.ptr; + + seed = chunk_cata("cc", R, A); + + while (c < C.ptr + C.len) + { + /* b(i) = MD5(S + c(i-1)) */ + hasher->get_hash(hasher, secret, NULL); + hasher->get_hash(hasher, seed, p); + + /* p(i) = b(i) xor c(1) */ + memxor(p, c, HASH_SIZE_MD5); + + /* prepare next round */ + seed = chunk_create(c, HASH_SIZE_MD5); + c += HASH_SIZE_MD5; + p += HASH_SIZE_MD5; + } + hasher->destroy(hasher); + + /* remove truncation, first byte is key length */ + if (*P.ptr >= P.len) + { /* decryption failed? */ + return chunk_empty; + } + return chunk_clone(chunk_create(P.ptr + 1, *P.ptr)); +} + +/** + * Implementation of radius_client_t.decrypt_msk + */ +static chunk_t decrypt_msk(private_radius_client_t *this, + radius_message_t *response, radius_message_t *request) +{ + struct { + u_int32_t id; + u_int8_t type; + u_int8_t length; + u_int16_t salt; + u_int8_t key[]; + } __attribute__((packed)) *mppe_key; + enumerator_t *enumerator; + chunk_t data, send = chunk_empty, recv = chunk_empty; + int type; + + enumerator = response->create_enumerator(response); + while (enumerator->enumerate(enumerator, &type, &data)) + { + if (type == RAT_VENDOR_SPECIFIC && + data.len > sizeof(*mppe_key)) + { + mppe_key = (void*)data.ptr; + if (ntohl(mppe_key->id) == VENDOR_ID_MICROSOFT && + mppe_key->length == data.len - sizeof(mppe_key->id)) + { + data = chunk_create(mppe_key->key, data.len - sizeof(*mppe_key)); + if (mppe_key->type == MS_MPPE_SEND_KEY) + { + send = decrypt_mppe_key(this, mppe_key->salt, data, request); + } + if (mppe_key->type == MS_MPPE_RECV_KEY) + { + recv = decrypt_mppe_key(this, mppe_key->salt, data, request); + } + } + } + } + enumerator->destroy(enumerator); + if (send.ptr && recv.ptr) + { + return chunk_cat("mm", recv, send); + } + chunk_clear(&send); + chunk_clear(&recv); + return chunk_empty; +} + +/** + * Implementation of radius_client_t.destroy. + */ +static void destroy(private_radius_client_t *this) +{ + free(this->state.ptr); + free(this); +} + +/** + * See header + */ +radius_client_t *radius_client_create() +{ + private_radius_client_t *this = malloc_thing(private_radius_client_t); + + this->public.request = (radius_message_t*(*)(radius_client_t*, radius_message_t *msg))request; + this->public.decrypt_msk = (chunk_t(*)(radius_client_t*, radius_message_t *, radius_message_t *))decrypt_msk; + this->public.destroy = (void(*)(radius_client_t*))destroy; + + this->state = chunk_empty; + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_radius/radius_client.h b/src/libcharon/plugins/eap_radius/radius_client.h new file mode 100644 index 000000000..77ba94807 --- /dev/null +++ b/src/libcharon/plugins/eap_radius/radius_client.h @@ -0,0 +1,88 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup radius_client radius_client + * @{ @ingroup eap_radius + */ + +#ifndef RADIUS_CLIENT_H_ +#define RADIUS_CLIENT_H_ + +#include "radius_message.h" + +typedef struct radius_client_t radius_client_t; + +/** + * RADIUS client functionality. + * + * To communicate with a RADIUS server, create a client and send messages over + * it. All instances share a fixed size pool of sockets. The client reserves + * a socket during request() and releases it afterwards. + */ +struct radius_client_t { + + /** + * Send a RADIUS request and wait for the response. + * + * The client fills in RADIUS Message identifier, NAS-Identifier, + * NAS-Port-Type, builds a Request-Authenticator and calculates the + * Message-Authenticator attribute. + * The received response gets verified using the Response-Identifier + * and the Message-Authenticator attribute. + * + * @param msg RADIUS request message to send + * @return response, NULL if timed out/verification failed + */ + radius_message_t* (*request)(radius_client_t *this, radius_message_t *msg); + + /** + * Decrypt the MSK encoded in a messages MS-MPPE-Send/Recv-Key. + * + * @param response RADIUS response message containing attributes + * @param request associated RADIUS request message + * @return allocated MSK, empty chunk if none found + */ + chunk_t (*decrypt_msk)(radius_client_t *this, radius_message_t *response, + radius_message_t *request); + + /** + * Destroy the client, release the socket. + */ + void (*destroy)(radius_client_t *this); +}; + +/** + * Create a RADIUS client, acquire a socket. + * + * This call might block if the socket pool is empty. + * + * @return radius_client_t object + */ +radius_client_t *radius_client_create(); + +/** + * Initialize the socket pool. + * + * @return TRUE if initialization successful + */ +bool radius_client_init(); + +/** + * Cleanup the socket pool. + */ +void radius_client_cleanup(); + +#endif /** RADIUS_CLIENT_H_ @}*/ diff --git a/src/libcharon/plugins/eap_radius/radius_message.c b/src/libcharon/plugins/eap_radius/radius_message.c new file mode 100644 index 000000000..11a1d8dfc --- /dev/null +++ b/src/libcharon/plugins/eap_radius/radius_message.c @@ -0,0 +1,476 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "radius_message.h" + +#include <daemon.h> +#include <crypto/hashers/hasher.h> + +typedef struct private_radius_message_t private_radius_message_t; +typedef struct rmsg_t rmsg_t; +typedef struct rattr_t rattr_t; + +/** + * RADIUS message header + */ +struct rmsg_t { + /** message code, radius_message_code_t */ + u_int8_t code; + /** message identifier */ + u_int8_t identifier; + /** length of Code, Identifier, Length, Authenticator and Attributes */ + u_int16_t length; + /** message authenticator, MD5 hash */ + u_int8_t authenticator[HASH_SIZE_MD5]; + /** variable list of packed attributes */ + u_int8_t attributes[]; +} __attribute__((packed)); + +/** + * RADIUS message attribute. + */ +struct rattr_t { + /** attribute type, radius_attribute_type_t */ + u_int8_t type; + /** length of the attriubte, including the Type, Length and Value fields */ + u_int8_t length; + /** variable length attribute value */ + u_int8_t value[]; +} __attribute__((packed)); + +/** + * Private data of an radius_message_t object. + */ +struct private_radius_message_t { + + /** + * Public radius_message_t interface. + */ + radius_message_t public; + + /** + * message data, allocated + */ + rmsg_t *msg; +}; + +ENUM_BEGIN(radius_message_code_names, RMC_ACCESS_REQUEST, RMC_ACCOUNTING_RESPONSE, + "Access-Request", + "Access-Accept", + "Access-Reject", + "Accounting-Request", + "Accounting-Response"); +ENUM_NEXT(radius_message_code_names, RMC_ACCESS_CHALLENGE, RMC_ACCESS_CHALLENGE, RMC_ACCOUNTING_RESPONSE, + "Access-Challenge"); +ENUM_END(radius_message_code_names, RMC_ACCESS_CHALLENGE); + +ENUM(radius_attribute_type_names, RAT_USER_NAME, RAT_MIP6_HOME_LINK_PREFIX, + "User-Name", + "User-Password", + "CHAP-Password", + "NAS-IP-Address", + "NAS-Port", + "Service-Type", + "Framed-Protocol", + "Framed-IP-Address", + "Framed-IP-Netmask", + "Framed-Routing", + "Filter-Id", + "Framed-MTU", + "Framed-Compression", + "Login-IP-Host", + "Login-Service", + "Login-TCP-Port", + "Unassigned", + "Reply-Message", + "Callback-Number", + "Callback-Id", + "Unassigned", + "Framed-Route", + "Framed-IPX-Network", + "State", + "Class", + "Vendor-Specific", + "Session-Timeout", + "Idle-Timeout", + "Termination-Action", + "Called-Station-Id", + "Calling-Station-Id", + "NAS-Identifier", + "Proxy-State", + "Login-LAT-Service", + "Login-LAT-Node", + "Login-LAT-Group", + "Framed-AppleTalk-Link", + "Framed-AppleTalk-Network", + "Framed-AppleTalk-Zone", + "Acct-Status-Type", + "Acct-Delay-Time", + "Acct-Input-Octets", + "Acct-Output-Octets", + "Acct-Session-Id", + "Acct-Authentic", + "Acct-Session-Time", + "Acct-Input-Packets", + "Acct-Output-Packets", + "Acct-Terminate-Cause", + "Acct-Multi-Session-Id", + "Acct-Link-Count", + "Acct-Input-Gigawords", + "Acct-Output-Gigawords", + "Unassigned", + "Event-Timestamp", + "Egress-VLANID", + "Ingress-Filters", + "Egress-VLAN-Name", + "User-Priority-Table", + "CHAP-Challenge", + "NAS-Port-Type", + "Port-Limit", + "Login-LAT-Port", + "Tunnel-Type", + "Tunnel-Medium-Type", + "Tunnel-Client-Endpoint", + "Tunnel-Server-Endpoint", + "Acct-Tunnel-Connection", + "Tunnel-Password", + "ARAP-Password", + "ARAP-Features", + "ARAP-Zone-Access", + "ARAP-Security", + "ARAP-Security-Data", + "Password-Retry", + "Prompt", + "Connect-Info", + "Configuration-Token", + "EAP-Message", + "Message-Authenticator", + "Tunnel-Private-Group-ID", + "Tunnel-Assignment-ID", + "Tunnel-Preference", + "ARAP-Challenge-Response", + "Acct-Interim-Interval", + "Acct-Tunnel-Packets-Lost", + "NAS-Port-Id", + "Framed-Pool", + "CUI", + "Tunnel-Client-Auth-ID", + "Tunnel-Server-Auth-ID", + "NAS-Filter-Rule", + "Unassigned", + "Originating-Line-Info", + "NAS-IPv6-Address", + "Framed-Interface-Id", + "Framed-IPv6-Prefix", + "Login-IPv6-Host", + "Framed-IPv6-Route", + "Framed-IPv6-Pool", + "Error-Cause", + "EAP-Key-Name", + "Digest-Response", + "Digest-Realm", + "Digest-Nonce", + "Digest-Response-Auth", + "Digest-Nextnonce", + "Digest-Method", + "Digest-URI", + "Digest-Qop", + "Digest-Algorithm", + "Digest-Entity-Body-Hash", + "Digest-CNonce", + "Digest-Nonce-Count", + "Digest-Username", + "Digest-Opaque", + "Digest-Auth-Param", + "Digest-AKA-Auts", + "Digest-Domain", + "Digest-Stale", + "Digest-HA1", + "SIP-AOR", + "Delegated-IPv6-Prefix", + "MIP6-Feature-Vector", + "MIP6-Home-Link-Prefix"); + +/** + * Attribute enumerator implementation + */ +typedef struct { + /** implements enumerator interface */ + enumerator_t public; + /** currently pointing attribute */ + rattr_t *next; + /** bytes left */ + int left; +} attribute_enumerator_t; + + +/** + * Implementation of attribute_enumerator_t.enumerate + */ +static bool attribute_enumerate(attribute_enumerator_t *this, + int *type, chunk_t *data) + +{ + if (this->left == 0) + { + return FALSE; + } + if (this->left < sizeof(rattr_t) || + this->left < this->next->length) + { + DBG1(DBG_IKE, "RADIUS message truncated"); + return FALSE; + } + *type = this->next->type; + data->ptr = this->next->value; + data->len = this->next->length - sizeof(rattr_t); + this->left -= this->next->length; + this->next = ((void*)this->next) + this->next->length; + return TRUE; +} + +/** + * Implementation of radius_message_t.create_enumerator + */ +static enumerator_t* create_enumerator(private_radius_message_t *this) +{ + attribute_enumerator_t *e; + + if (ntohs(this->msg->length) < sizeof(rmsg_t) + sizeof(rattr_t)) + { + return enumerator_create_empty(); + } + + e = malloc_thing(attribute_enumerator_t); + e->public.enumerate = (void*)attribute_enumerate; + e->public.destroy = (void*)free; + e->next = (rattr_t*)this->msg->attributes; + e->left = ntohs(this->msg->length) - sizeof(rmsg_t); + return &e->public; +} + +/** + * Implementation of radius_message_t.add + */ +static void add(private_radius_message_t *this, radius_attribute_type_t type, + chunk_t data) +{ + rattr_t *attribute; + + data.len = min(data.len, 253); + this->msg = realloc(this->msg, + ntohs(this->msg->length) + sizeof(rattr_t) + data.len); + attribute = ((void*)this->msg) + ntohs(this->msg->length); + attribute->type = type; + attribute->length = data.len + sizeof(rattr_t); + memcpy(attribute->value, data.ptr, data.len); + this->msg->length = htons(ntohs(this->msg->length) + attribute->length); +} + +/** + * Implementation of radius_message_t.sign + */ +static void sign(private_radius_message_t *this, rng_t *rng, signer_t *signer) +{ + char buf[HASH_SIZE_MD5]; + + /* build Request-Authenticator */ + rng->get_bytes(rng, HASH_SIZE_MD5, this->msg->authenticator); + + /* build Message-Authenticator attribute, using 16 null bytes */ + memset(buf, 0, sizeof(buf)); + add(this, RAT_MESSAGE_AUTHENTICATOR, chunk_create(buf, sizeof(buf))); + signer->get_signature(signer, + chunk_create((u_char*)this->msg, ntohs(this->msg->length)), + ((u_char*)this->msg) + ntohs(this->msg->length) - HASH_SIZE_MD5); +} + +/** + * Implementation of radius_message_t.verify + */ +static bool verify(private_radius_message_t *this, u_int8_t *req_auth, + chunk_t secret, hasher_t *hasher, signer_t *signer) +{ + char buf[HASH_SIZE_MD5], res_auth[HASH_SIZE_MD5]; + enumerator_t *enumerator; + int type; + chunk_t data, msg; + bool has_eap = FALSE, has_auth = FALSE; + + /* replace Response by Request Authenticator for verification */ + memcpy(res_auth, this->msg->authenticator, HASH_SIZE_MD5); + memcpy(this->msg->authenticator, req_auth, HASH_SIZE_MD5); + msg = chunk_create((u_char*)this->msg, ntohs(this->msg->length)); + + /* verify Response-Authenticator */ + hasher->get_hash(hasher, msg, NULL); + hasher->get_hash(hasher, secret, buf); + if (!memeq(buf, res_auth, HASH_SIZE_MD5)) + { + DBG1(DBG_CFG, "RADIUS Response-Authenticator verification failed"); + return FALSE; + } + + /* verify Message-Authenticator attribute */ + enumerator = create_enumerator(this); + while (enumerator->enumerate(enumerator, &type, &data)) + { + if (type == RAT_MESSAGE_AUTHENTICATOR) + { + if (data.len != HASH_SIZE_MD5) + { + DBG1(DBG_CFG, "RADIUS Message-Authenticator invalid length"); + enumerator->destroy(enumerator); + return FALSE; + } + memcpy(buf, data.ptr, data.len); + memset(data.ptr, 0, data.len); + if (signer->verify_signature(signer, msg, + chunk_create(buf, sizeof(buf)))) + { + /* restore Message-Authenticator */ + memcpy(data.ptr, buf, data.len); + has_auth = TRUE; + break; + } + else + { + DBG1(DBG_CFG, "RADIUS Message-Authenticator verification failed"); + enumerator->destroy(enumerator); + return FALSE; + } + } + else if (type == RAT_EAP_MESSAGE) + { + has_eap = TRUE; + } + } + enumerator->destroy(enumerator); + /* restore Response-Authenticator */ + memcpy(this->msg->authenticator, res_auth, HASH_SIZE_MD5); + + if (has_eap && !has_auth) + { /* Message-Authenticator is required if we have an EAP-Message */ + DBG1(DBG_CFG, "RADIUS Message-Authenticator attribute missing"); + return FALSE; + } + return TRUE; +} + +/** + * Implementation of radius_message_t.get_code + */ +static radius_message_code_t get_code(private_radius_message_t *this) +{ + return this->msg->code; +} + +/** + * Implementation of radius_message_t.get_identifier + */ +static u_int8_t get_identifier(private_radius_message_t *this) +{ + return this->msg->identifier; +} + +/** + * Implementation of radius_message_t.set_identifier + */ +static void set_identifier(private_radius_message_t *this, u_int8_t identifier) +{ + this->msg->identifier = identifier; +} + +/** + * Implementation of radius_message_t.get_authenticator + */ +static u_int8_t* get_authenticator(private_radius_message_t *this) +{ + return this->msg->authenticator; +} + + +/** + * Implementation of radius_message_t.get_encoding + */ +static chunk_t get_encoding(private_radius_message_t *this) +{ + return chunk_create((u_char*)this->msg, ntohs(this->msg->length)); +} + +/** + * Implementation of radius_message_t.destroy. + */ +static void destroy(private_radius_message_t *this) +{ + free(this->msg); + free(this); +} + +/** + * Generic constructor + */ +static private_radius_message_t *radius_message_create() +{ + private_radius_message_t *this = malloc_thing(private_radius_message_t); + + this->public.create_enumerator = (enumerator_t*(*)(radius_message_t*))create_enumerator; + this->public.add = (void(*)(radius_message_t*, radius_attribute_type_t,chunk_t))add; + this->public.get_code = (radius_message_code_t(*)(radius_message_t*))get_code; + this->public.get_identifier = (u_int8_t(*)(radius_message_t*))get_identifier; + this->public.set_identifier = (void(*)(radius_message_t*, u_int8_t identifier))set_identifier; + this->public.get_authenticator = (u_int8_t*(*)(radius_message_t*))get_authenticator; + this->public.get_encoding = (chunk_t(*)(radius_message_t*))get_encoding; + this->public.sign = (void(*)(radius_message_t*, rng_t *rng, signer_t *signer))sign; + this->public.verify = (bool(*)(radius_message_t*, u_int8_t *req_auth, chunk_t secret, hasher_t *hasher, signer_t *signer))verify; + this->public.destroy = (void(*)(radius_message_t*))destroy; + + return this; +} + +/** + * See header + */ +radius_message_t *radius_message_create_request() +{ + private_radius_message_t *this = radius_message_create(); + + this->msg = malloc_thing(rmsg_t); + this->msg->code = RMC_ACCESS_REQUEST; + this->msg->identifier = 0; + this->msg->length = htons(sizeof(rmsg_t)); + + return &this->public; +} + +/** + * See header + */ +radius_message_t *radius_message_parse_response(chunk_t data) +{ + private_radius_message_t *this = radius_message_create(); + + this->msg = malloc(data.len); + memcpy(this->msg, data.ptr, data.len); + if (data.len < sizeof(rmsg_t) || + ntohs(this->msg->length) != data.len) + { + DBG1(DBG_IKE, "RADIUS message has invalid length"); + destroy(this); + return NULL; + } + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_radius/radius_message.h b/src/libcharon/plugins/eap_radius/radius_message.h new file mode 100644 index 000000000..266839d3b --- /dev/null +++ b/src/libcharon/plugins/eap_radius/radius_message.h @@ -0,0 +1,276 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup radius_message radius_message + * @{ @ingroup eap_radius + */ + +#ifndef RADIUS_MESSAGE_H_ +#define RADIUS_MESSAGE_H_ + +#include <library.h> + +typedef struct radius_message_t radius_message_t; +typedef enum radius_message_code_t radius_message_code_t; +typedef enum radius_attribute_type_t radius_attribute_type_t; + +/** + * RADIUS Message Codes. + */ +enum radius_message_code_t { + RMC_ACCESS_REQUEST = 1, + RMC_ACCESS_ACCEPT = 2, + RMC_ACCESS_REJECT = 3, + RMC_ACCOUNTING_REQUEST = 4, + RMC_ACCOUNTING_RESPONSE = 5, + RMC_ACCESS_CHALLENGE = 11, +}; + +/** + * Enum names for radius_attribute_type_t. + */ +extern enum_name_t *radius_message_code_names; + +/** + * RADIUS Attribute Types. + */ +enum radius_attribute_type_t { + RAT_USER_NAME = 1, + RAT_USER_PASSWORD = 2, + RAT_CHAP_PASSWORD = 3, + RAT_NAS_IP_ADDRESS = 4, + RAT_NAS_PORT = 5, + RAT_SERVICE_TYPE = 6, + RAT_FRAMED_PROTOCOL = 7, + RAT_FRAMED_IP_ADDRESS = 8, + RAT_FRAMED_IP_NETMASK = 9, + RAT_FRAMED_ROUTING = 10, + RAT_FILTER_ID = 11, + RAT_FRAMED_MTU = 12, + RAT_FRAMED_COMPRESSION = 13, + RAT_LOGIN_IP_HOST = 14, + RAT_LOGIN_SERVICE = 15, + RAT_LOGIN_TCP_PORT = 16, + RAT_REPLY_MESSAGE = 18, + RAT_CALLBACK_NUMBER = 19, + RAT_CALLBACK_ID = 20, + RAT_FRAMED_ROUTE = 22, + RAT_FRAMED_IPX_NETWORK = 23, + RAT_STATE = 24, + RAT_CLASS = 25, + RAT_VENDOR_SPECIFIC = 26, + RAT_SESSION_TIMEOUT = 27, + RAT_IDLE_TIMEOUT = 28, + RAT_TERMINATION_ACTION = 29, + RAT_CALLED_STATION_ID = 30, + RAT_CALLING_STATION_ID = 31, + RAT_NAS_IDENTIFIER = 32, + RAT_PROXY_STATE = 33, + RAT_LOGIN_LAT_SERVICE = 34, + RAT_LOGIN_LAT_NODE = 35, + RAT_LOGIN_LAT_GROUP = 36, + RAT_FRAMED_APPLETALK_LINK = 37, + RAT_FRAMED_APPLETALK_NETWORK = 38, + RAT_FRAMED_APPLETALK_ZONE = 39, + RAT_ACCT_STATUS_TYPE = 40, + RAT_ACCT_DELAY_TIME = 41, + RAT_ACCT_INPUT_OCTETS = 42, + RAT_ACCT_OUTPUT_OCTETS = 43, + RAT_ACCT_SESSION_ID = 44, + RAT_ACCT_AUTHENTIC = 45, + RAT_ACCT_SESSION_TIME = 46, + RAT_ACCT_INPUT_PACKETS = 47, + RAT_ACCT_OUTPUT_PACKETS = 48, + RAT_ACCT_TERMINATE_CAUSE = 49, + RAT_ACCT_MULTI_SESSION_ID = 50, + RAT_ACCT_LINK_COUNT = 51, + RAT_ACCT_INPUT_GIGAWORDS = 52, + RAT_ACCT_OUTPUT_GIGAWORDS = 53, + RAT_EVENT_TIMESTAMP = 55, + RAT_EGRESS_VLANID = 56, + RAT_INGRESS_FILTERS = 57, + RAT_EGRESS_VLAN_NAME = 58, + RAT_USER_PRIORITY_TABLE = 59, + RAT_CHAP_CHALLENGE = 60, + RAT_NAS_PORT_TYPE = 61, + RAT_PORT_LIMIT = 62, + RAT_LOGIN_LAT_PORT = 63, + RAT_TUNNEL_TYPE = 64, + RAT_TUNNEL_MEDIUM_TYPE = 65, + RAT_TUNNEL_CLIENT_ENDPOINT = 66, + RAT_TUNNEL_SERVER_ENDPOINT = 67, + RAT_ACCT_TUNNEL_CONNECTION = 68, + RAT_TUNNEL_PASSWORD = 69, + RAT_ARAP_PASSWORD = 70, + RAT_ARAP_FEATURES = 71, + RAT_ARAP_ZONE_ACCESS = 72, + RAT_ARAP_SECURITY = 73, + RAT_ARAP_SECURITY_DATA = 74, + RAT_PASSWORD_RETRY = 75, + RAT_PROMPT = 76, + RAT_CONNECT_INFO = 77, + RAT_CONFIGURATION_TOKEN = 78, + RAT_EAP_MESSAGE = 79, + RAT_MESSAGE_AUTHENTICATOR = 80, + RAT_TUNNEL_PRIVATE_GROUP_ID = 81, + RAT_TUNNEL_ASSIGNMENT_ID = 82, + RAT_TUNNEL_PREFERENCE = 83, + RAT_ARAP_CHALLENGE_RESPONSE = 84, + RAT_ACCT_INTERIM_INTERVAL = 85, + RAT_ACCT_TUNNEL_PACKETS_LOST = 86, + RAT_NAS_PORT_ID = 87, + RAT_FRAMED_POOL = 88, + RAT_CUI = 89, + RAT_TUNNEL_CLIENT_AUTH_ID = 90, + RAT_TUNNEL_SERVER_AUTH_ID = 91, + RAT_NAS_FILTER_RULE = 92, + RAT_UNASSIGNED = 93, + RAT_ORIGINATING_LINE_INFO = 94, + RAT_NAS_IPV6_ADDRESS = 95, + RAT_FRAMED_INTERFACE_ID = 96, + RAT_FRAMED_IPV6_PREFIX = 97, + RAT_LOGIN_IPV6_HOST = 98, + RAT_FRAMED_IPV6_ROUTE = 99, + RAT_FRAMED_IPV6_POOL = 100, + RAT_ERROR_CAUSE = 101, + RAT_EAP_KEY_NAME = 102, + RAT_DIGEST_RESPONSE = 103, + RAT_DIGEST_REALM = 104, + RAT_DIGEST_NONCE = 105, + RAT_DIGEST_RESPONSE_AUTH = 106, + RAT_DIGEST_NEXTNONCE = 107, + RAT_DIGEST_METHOD = 108, + RAT_DIGEST_URI = 109, + RAT_DIGEST_QOP = 110, + RAT_DIGEST_ALGORITHM = 111, + RAT_DIGEST_ENTITY_BODY_HASH = 112, + RAT_DIGEST_CNONCE = 113, + RAT_DIGEST_NONCE_COUNT = 114, + RAT_DIGEST_USERNAME = 115, + RAT_DIGEST_OPAQUE = 116, + RAT_DIGEST_AUTH_PARAM = 117, + RAT_DIGEST_AKA_AUTS = 118, + RAT_DIGEST_DOMAIN = 119, + RAT_DIGEST_STALE = 120, + RAT_DIGEST_HA1 = 121, + RAT_SIP_AOR = 122, + RAT_DELEGATED_IPV6_PREFIX = 123, + RAT_MIP6_FEATURE_VECTOR = 124, + RAT_MIP6_HOME_LINK_PREFIX = 125, +}; + +/** + * Enum names for radius_attribute_type_t. + */ +extern enum_name_t *radius_attribute_type_names; + +/** + * A RADIUS message, contains attributes. + */ +struct radius_message_t { + + /** + * Create an enumerator over contained RADIUS attributes. + * + * @return enumerator over (int type, chunk_t data) + */ + enumerator_t* (*create_enumerator)(radius_message_t *this); + + /** + * Add a RADIUS attribute to the message. + * + * @param type type of attribute to add + * @param attribute data, gets cloned + */ + void (*add)(radius_message_t *this, radius_attribute_type_t type, + chunk_t data); + + /** + * Get the message type (code). + * + * @return message code + */ + radius_message_code_t (*get_code)(radius_message_t *this); + + /** + * Get the message identifier. + * + * @return message identifier + */ + u_int8_t (*get_identifier)(radius_message_t *this); + + /** + * Set the message identifier. + * + * @param identifier message identifier + */ + void (*set_identifier)(radius_message_t *this, u_int8_t identifier); + + /** + * Get the 16 byte authenticator. + * + * @return pointer to the Authenticator field + */ + u_int8_t* (*get_authenticator)(radius_message_t *this); + + /** + * Get the RADIUS message in its encoded form. + * + * @return chunk pointing to internal RADIUS message. + */ + chunk_t (*get_encoding)(radius_message_t *this); + + /** + * Calculate and add the Message-Authenticator attribute to the message. + * + * @param rng RNG to create Request-Authenticator + * @param signer HMAC-MD5 signer with secret set + */ + void (*sign)(radius_message_t *this, rng_t *rng, signer_t *signer); + + /** + * Verify the integrity of a received RADIUS response. + * + * @param req_auth 16 byte Authenticator of the corresponding request + * @param secret shared RADIUS secret + * @param hasher hasher to verify Response-Authenticator + * @param signer signer to verify Message-Authenticator attribute + */ + bool (*verify)(radius_message_t *this, u_int8_t *req_auth, chunk_t secret, + hasher_t *hasher, signer_t *signer); + + /** + * Destroy the message. + */ + void (*destroy)(radius_message_t *this); +}; + +/** + * Create an empty RADIUS request message (RMT_ACCESS_REQUEST). + * + * @return radius_message_t object + */ +radius_message_t *radius_message_create_request(); + +/** + * Parse and verify a recevied RADIUS response. + * + * @param data received message data + * @return radius_message_t object, NULL if length invalid + */ +radius_message_t *radius_message_parse_response(chunk_t data); + +#endif /** RADIUS_MESSAGE_H_ @}*/ diff --git a/src/libcharon/plugins/eap_sim/Makefile.am b/src/libcharon/plugins/eap_sim/Makefile.am new file mode 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Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_sim_peer.h" + +#include <daemon.h> + +#include <simaka_message.h> + +/* number of tries we do authenticate */ +#define MAX_TRIES 3 + +/* number of triplets for one authentication */ +#define TRIPLET_COUNT 3 + +/** length of the AT_NONCE_MT nonce value */ +#define NONCE_LEN 16 + +typedef struct private_eap_sim_peer_t private_eap_sim_peer_t; + +/** + * Private data of an eap_sim_peer_t object. + */ +struct private_eap_sim_peer_t { + + /** + * Public authenticator_t interface. + */ + eap_sim_peer_t public; + + /** + * permanent ID of peer + */ + identification_t *permanent; + + /** + * Pseudonym identity the peer uses + */ + identification_t *pseudonym; + + /** + * Reauthentication identity the peer uses + */ + identification_t *reauth; + + /** + * EAP-SIM crypto helper + */ + simaka_crypto_t *crypto; + + /** + * how many times we try to authenticate + */ + int tries; + + /** + * version list received from server + */ + chunk_t version_list; + + /** + * Nonce value used in AT_NONCE_MT/AT_NONCE_S + */ + chunk_t nonce; + + /** + * MSK, used for EAP-SIM based IKEv2 authentication + */ + chunk_t msk; + + /** + * Master key, if reauthentication is used + */ + char mk[HASH_SIZE_SHA1]; + + /** + * Counter value if reauthentication is used + */ + u_int16_t counter; +}; + +/* version of SIM protocol we speak */ +static chunk_t version = chunk_from_chars(0x00,0x01); + +/** + * Create a SIM_CLIENT_ERROR + */ +static eap_payload_t* create_client_error(private_eap_sim_peer_t *this, + u_int8_t identifier, simaka_client_error_t code) +{ + simaka_message_t *message; + eap_payload_t *out; + u_int16_t encoded; + + DBG1(DBG_IKE, "sending client error '%N'", simaka_client_error_names, code); + + message = simaka_message_create(FALSE, identifier, EAP_SIM, + SIM_CLIENT_ERROR, this->crypto); + encoded = htons(code); + message->add_attribute(message, AT_CLIENT_ERROR_CODE, + chunk_create((char*)&encoded, sizeof(encoded))); + out = message->generate(message, chunk_empty); + message->destroy(message); + return out; +} + +/** + * process an EAP-SIM/Request/Start message + */ +static status_t process_start(private_eap_sim_peer_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + simaka_message_t *message; + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data, id = chunk_empty; + rng_t *rng; + bool supported = FALSE; + simaka_attribute_t id_req = 0; + + /* reset previously uses reauthentication/pseudonym data */ + this->crypto->clear_keys(this->crypto); + DESTROY_IF(this->pseudonym); + this->pseudonym = NULL; + DESTROY_IF(this->reauth); + this->reauth = NULL; + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_VERSION_LIST: + { + free(this->version_list.ptr); + this->version_list = chunk_clone(data); + while (data.len >= version.len) + { + if (memeq(data.ptr, version.ptr, version.len)) + { + supported = TRUE; + break; + } + } + break; + } + case AT_ANY_ID_REQ: + case AT_FULLAUTH_ID_REQ: + case AT_PERMANENT_ID_REQ: + id_req = type; + break; + default: + if (!simaka_attribute_skippable(type)) + { + *out = create_client_error(this, in->get_identifier(in), + SIM_UNABLE_TO_PROCESS); + enumerator->destroy(enumerator); + return NEED_MORE; + } + break; + } + } + enumerator->destroy(enumerator); + + if (!supported) + { + DBG1(DBG_IKE, "server does not support EAP-SIM version number 1"); + *out = create_client_error(this, in->get_identifier(in), + SIM_UNSUPPORTED_VERSION); + return NEED_MORE; + } + + switch (id_req) + { + case AT_ANY_ID_REQ: + this->reauth = charon->sim->card_get_reauth(charon->sim, + this->permanent, this->mk, &this->counter); + if (this->reauth) + { + id = this->reauth->get_encoding(this->reauth); + break; + } + /* FALL */ + case AT_FULLAUTH_ID_REQ: + this->pseudonym = charon->sim->card_get_pseudonym(charon->sim, + this->permanent); + if (this->pseudonym) + { + id = this->pseudonym->get_encoding(this->pseudonym); + break; + } + /* FALL */ + case AT_PERMANENT_ID_REQ: + id = this->permanent->get_encoding(this->permanent); + break; + default: + break; + } + + /* generate AT_NONCE_MT value */ + rng = this->crypto->get_rng(this->crypto); + free(this->nonce.ptr); + rng->allocate_bytes(rng, NONCE_LEN, &this->nonce); + + message = simaka_message_create(FALSE, in->get_identifier(in), EAP_SIM, + SIM_START, this->crypto); + if (!this->reauth) + { + message->add_attribute(message, AT_SELECTED_VERSION, version); + message->add_attribute(message, AT_NONCE_MT, this->nonce); + } + if (id.len) + { + message->add_attribute(message, AT_IDENTITY, id); + } + *out = message->generate(message, chunk_empty); + message->destroy(message); + + return NEED_MORE; +} + +/** + * process an EAP-SIM/Request/Challenge message + */ +static status_t process_challenge(private_eap_sim_peer_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + simaka_message_t *message; + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data, rands = chunk_empty, kcs, kc, sreses, sres, mk; + identification_t *id; + + if (this->tries-- <= 0) + { + /* give up without notification. This hack is required as some buggy + * server implementations won't respect our client-error. */ + return FAILED; + } + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_RAND: + rands = data; + break; + default: + if (!simaka_attribute_skippable(type)) + { + *out = create_client_error(this, in->get_identifier(in), + SIM_UNABLE_TO_PROCESS); + enumerator->destroy(enumerator); + return NEED_MORE; + } + break; + } + } + enumerator->destroy(enumerator); + + /* excepting two or three RAND, each 16 bytes. We require two valid + * and different RANDs */ + if ((rands.len != 2 * SIM_RAND_LEN && rands.len != 3 * SIM_RAND_LEN) || + memeq(rands.ptr, rands.ptr + SIM_RAND_LEN, SIM_RAND_LEN)) + { + DBG1(DBG_IKE, "no valid AT_RAND received"); + *out = create_client_error(this, in->get_identifier(in), + SIM_INSUFFICIENT_CHALLENGES); + return NEED_MORE; + } + /* get two or three KCs/SRESes from SIM using RANDs */ + kcs = kc = chunk_alloca(rands.len / 2); + sreses = sres = chunk_alloca(rands.len / 4); + while (rands.len >= SIM_RAND_LEN) + { + if (!charon->sim->card_get_triplet(charon->sim, this->permanent, + rands.ptr, sres.ptr, kc.ptr)) + { + DBG1(DBG_IKE, "unable to get EAP-SIM triplet"); + *out = create_client_error(this, in->get_identifier(in), + SIM_UNABLE_TO_PROCESS); + return NEED_MORE; + } + DBG3(DBG_IKE, "got triplet for RAND %b\n Kc %b\n SRES %b", + rands.ptr, SIM_RAND_LEN, sres.ptr, SIM_SRES_LEN, kc.ptr, SIM_KC_LEN); + kc = chunk_skip(kc, SIM_KC_LEN); + sres = chunk_skip(sres, SIM_SRES_LEN); + rands = chunk_skip(rands, SIM_RAND_LEN); + } + + id = this->permanent; + if (this->pseudonym) + { + id = this->pseudonym; + } + data = chunk_cata("cccc", kcs, this->nonce, this->version_list, version); + free(this->msk.ptr); + this->msk = this->crypto->derive_keys_full(this->crypto, id, data, &mk); + memcpy(this->mk, mk.ptr, mk.len); + free(mk.ptr); + + /* Verify AT_MAC attribute, signature is over "EAP packet | NONCE_MT", and + * parse() again after key derivation, reading encrypted attributes */ + if (!in->verify(in, this->nonce) || !in->parse(in)) + { + *out = create_client_error(this, in->get_identifier(in), + SIM_UNABLE_TO_PROCESS); + return NEED_MORE; + } + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_NEXT_REAUTH_ID: + this->counter = 0; + id = identification_create_from_data(data); + charon->sim->card_set_reauth(charon->sim, this->permanent, id, + this->mk, this->counter); + id->destroy(id); + break; + case AT_NEXT_PSEUDONYM: + id = identification_create_from_data(data); + charon->sim->card_set_pseudonym(charon->sim, this->permanent, id); + id->destroy(id); + break; + default: + break; + } + } + enumerator->destroy(enumerator); + + /* build response with AT_MAC, built over "EAP packet | n*SRES" */ + message = simaka_message_create(FALSE, in->get_identifier(in), EAP_SIM, + SIM_CHALLENGE, this->crypto); + *out = message->generate(message, sreses); + message->destroy(message); + return NEED_MORE; +} + +/** + * Check if a received counter value is acceptable + */ +static bool counter_too_small(private_eap_sim_peer_t *this, chunk_t chunk) +{ + u_int16_t counter; + + memcpy(&counter, chunk.ptr, sizeof(counter)); + counter = htons(counter); + return counter < this->counter; +} + +/** + * process an EAP-SIM/Request/Re-Authentication message + */ +static status_t process_reauthentication(private_eap_sim_peer_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + simaka_message_t *message; + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data, counter = chunk_empty, nonce = chunk_empty, id = chunk_empty; + + if (!this->reauth) + { + DBG1(DBG_IKE, "received %N, but not expected", + simaka_subtype_names, SIM_REAUTHENTICATION); + *out = create_client_error(this, in->get_identifier(in), + SIM_UNABLE_TO_PROCESS); + return NEED_MORE; + } + + this->crypto->derive_keys_reauth(this->crypto, + chunk_create(this->mk, HASH_SIZE_SHA1)); + + /* verify MAC and parse again with decryption key */ + if (!in->verify(in, chunk_empty) || !in->parse(in)) + { + *out = create_client_error(this, in->get_identifier(in), + SIM_UNABLE_TO_PROCESS); + return NEED_MORE; + } + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_COUNTER: + counter = data; + break; + case AT_NONCE_S: + nonce = data; + break; + case AT_NEXT_REAUTH_ID: + id = data; + break; + default: + if (!simaka_attribute_skippable(type)) + { + *out = create_client_error(this, in->get_identifier(in), + SIM_UNABLE_TO_PROCESS); + enumerator->destroy(enumerator); + return NEED_MORE; + } + break; + } + } + enumerator->destroy(enumerator); + + if (!nonce.len || !counter.len) + { + DBG1(DBG_IKE, "EAP-SIM/Request/Re-Authentication message incomplete"); + *out = create_client_error(this, in->get_identifier(in), + SIM_UNABLE_TO_PROCESS); + return NEED_MORE; + } + + message = simaka_message_create(FALSE, in->get_identifier(in), EAP_SIM, + SIM_REAUTHENTICATION, this->crypto); + if (counter_too_small(this, counter)) + { + DBG1(DBG_IKE, "reauthentication counter too small"); + message->add_attribute(message, AT_COUNTER_TOO_SMALL, chunk_empty); + } + else + { + free(this->msk.ptr); + this->msk = this->crypto->derive_keys_reauth_msk(this->crypto, + this->reauth, counter, nonce, + chunk_create(this->mk, HASH_SIZE_SHA1)); + if (id.len) + { + identification_t *reauth; + + reauth = identification_create_from_data(data); + charon->sim->card_set_reauth(charon->sim, this->permanent, reauth, + this->mk, this->counter); + reauth->destroy(reauth); + } + } + message->add_attribute(message, AT_COUNTER, counter); + *out = message->generate(message, nonce); + message->destroy(message); + return NEED_MORE; +} + +/** + * process an EAP-SIM/Request/Notification message + */ +static status_t process_notification(private_eap_sim_peer_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + simaka_message_t *message; + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data; + bool success = TRUE; + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + if (type == AT_NOTIFICATION) + { + u_int16_t code; + + memcpy(&code, data.ptr, sizeof(code)); + code = ntohs(code); + + /* test success bit */ + if (!(data.ptr[0] & 0x80)) + { + success = FALSE; + DBG1(DBG_IKE, "received EAP-SIM notification error '%N'", + simaka_notification_names, code); + } + else + { + DBG1(DBG_IKE, "received EAP-SIM notification '%N'", + simaka_notification_names, code); + } + } + else if (!simaka_attribute_skippable(type)) + { + success = FALSE; + break; + } + } + enumerator->destroy(enumerator); + + if (success) + { /* empty notification reply */ + message = simaka_message_create(FALSE, in->get_identifier(in), EAP_SIM, + SIM_NOTIFICATION, this->crypto); + *out = message->generate(message, chunk_empty); + message->destroy(message); + } + else + { + *out = create_client_error(this, in->get_identifier(in), + SIM_UNABLE_TO_PROCESS); + } + return NEED_MORE; +} + +/** + * Implementation of eap_method_t.process + */ +static status_t process(private_eap_sim_peer_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + simaka_message_t *message; + status_t status; + + message = simaka_message_create_from_payload(in, this->crypto); + if (!message) + { + *out = create_client_error(this, in->get_identifier(in), + SIM_UNABLE_TO_PROCESS); + return NEED_MORE; + } + if (!message->parse(message)) + { + message->destroy(message); + *out = create_client_error(this, in->get_identifier(in), + SIM_UNABLE_TO_PROCESS); + return NEED_MORE; + } + switch (message->get_subtype(message)) + { + case SIM_START: + status = process_start(this, message, out); + break; + case SIM_CHALLENGE: + status = process_challenge(this, message, out); + break; + case SIM_REAUTHENTICATION: + status = process_reauthentication(this, message, out); + break; + case SIM_NOTIFICATION: + status = process_notification(this, message, out); + break; + default: + DBG1(DBG_IKE, "unable to process EAP-SIM subtype %N", + simaka_subtype_names, message->get_subtype(message)); + *out = create_client_error(this, in->get_identifier(in), + SIM_UNABLE_TO_PROCESS); + status = NEED_MORE; + break; + } + message->destroy(message); + return status; +} + +/** + * Implementation of eap_method_t.initiate + */ +static status_t initiate(private_eap_sim_peer_t *this, eap_payload_t **out) +{ + /* peer never initiates */ + return FAILED; +} + +/** + * Implementation of eap_method_t.get_type. + */ +static eap_type_t get_type(private_eap_sim_peer_t *this, u_int32_t *vendor) +{ + *vendor = 0; + return EAP_SIM; +} + +/** + * Implementation of eap_method_t.get_msk. + */ +static status_t get_msk(private_eap_sim_peer_t *this, chunk_t *msk) +{ + if (this->msk.ptr) + { + *msk = this->msk; + return SUCCESS; + } + return FAILED; +} + +/** + * Implementation of eap_method_t.is_mutual. + */ +static bool is_mutual(private_eap_sim_peer_t *this) +{ + return TRUE; +} + +/** + * Implementation of eap_method_t.destroy. + */ +static void destroy(private_eap_sim_peer_t *this) +{ + this->permanent->destroy(this->permanent); + DESTROY_IF(this->pseudonym); + DESTROY_IF(this->reauth); + this->crypto->destroy(this->crypto); + free(this->version_list.ptr); + free(this->nonce.ptr); + free(this->msk.ptr); + free(this); +} + +/* + * Described in header. + */ +eap_sim_peer_t *eap_sim_peer_create(identification_t *server, + identification_t *peer) +{ + private_eap_sim_peer_t *this = malloc_thing(private_eap_sim_peer_t); + + this->public.interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate; + this->public.interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process; + this->public.interface.get_type = (eap_type_t(*)(eap_method_t*,u_int32_t*))get_type; + this->public.interface.is_mutual = (bool(*)(eap_method_t*))is_mutual; + this->public.interface.get_msk = (status_t(*)(eap_method_t*,chunk_t*))get_msk; + this->public.interface.destroy = (void(*)(eap_method_t*))destroy; + + this->crypto = simaka_crypto_create(); + if (!this->crypto) + { + free(this); + return NULL; + } + this->permanent = peer->clone(peer); + this->pseudonym = NULL; + this->reauth = NULL; + this->tries = MAX_TRIES; + this->version_list = chunk_empty; + this->nonce = chunk_empty; + this->msk = chunk_empty; + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_sim/eap_sim_peer.h b/src/libcharon/plugins/eap_sim/eap_sim_peer.h new file mode 100644 index 000000000..89f81301e --- /dev/null +++ b/src/libcharon/plugins/eap_sim/eap_sim_peer.h @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_sim_peer eap_sim_peer + * @{ @ingroup eap_sim + */ + +#ifndef EAP_SIM_PEER_H_ +#define EAP_SIM_PEER_H_ + +#include <sa/authenticators/eap/eap_method.h> + +typedef struct eap_sim_peer_t eap_sim_peer_t; + +/** + * EAP-SIM peer implementation. + * + * This EAP-SIM module uses sim_card_t implementations for triplet calculation, + * found via the eap_sim_manager_t. + */ +struct eap_sim_peer_t { + + /** + * Implemented eap_method_t interface. + */ + eap_method_t interface; + + /** + * Destroy a eap_sim_peer_t. + */ + void (*destroy)(eap_sim_peer_t *this); +}; + +/** + * Creates the EAP method EAP-SIM acting as peer. + * + * @param server ID of the EAP server + * @param peer ID of the EAP peer + * @return eap_sim_t object + */ +eap_sim_peer_t *eap_sim_peer_create(identification_t *server, + identification_t *peer); + +#endif /** EAP_SIM_PEER_H_ @}*/ diff --git a/src/libcharon/plugins/eap_sim/eap_sim_plugin.c b/src/libcharon/plugins/eap_sim/eap_sim_plugin.c new file mode 100644 index 000000000..f0c972253 --- /dev/null +++ b/src/libcharon/plugins/eap_sim/eap_sim_plugin.c @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_sim_plugin.h" + +#include "eap_sim_server.h" +#include "eap_sim_peer.h" + +#include <daemon.h> + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(eap_sim_plugin_t *this) +{ + charon->eap->remove_method(charon->eap, + (eap_constructor_t)eap_sim_server_create); + charon->eap->remove_method(charon->eap, + (eap_constructor_t)eap_sim_peer_create); + free(this); +} + +/* + * see header file + */ +plugin_t *eap_sim_plugin_create() +{ + eap_sim_plugin_t *this = malloc_thing(eap_sim_plugin_t); + + this->plugin.destroy = (void(*)(plugin_t*))destroy; + + charon->eap->add_method(charon->eap, EAP_SIM, 0, EAP_SERVER, + (eap_constructor_t)eap_sim_server_create); + charon->eap->add_method(charon->eap, EAP_SIM, 0, EAP_PEER, + (eap_constructor_t)eap_sim_peer_create); + + return &this->plugin; +} + diff --git a/src/libcharon/plugins/eap_sim/eap_sim_plugin.h b/src/libcharon/plugins/eap_sim/eap_sim_plugin.h new file mode 100644 index 000000000..4e10380c4 --- /dev/null +++ b/src/libcharon/plugins/eap_sim/eap_sim_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_sim eap_sim + * @ingroup cplugins + * + * @defgroup eap_sim_plugin eap_sim_plugin + * @{ @ingroup eap_sim + */ + +#ifndef EAP_SIM_PLUGIN_H_ +#define EAP_SIM_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct eap_sim_plugin_t eap_sim_plugin_t; + +/** + * EAP-SIM plugin. + */ +struct eap_sim_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** EAP_SIM_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/eap_sim/eap_sim_server.c b/src/libcharon/plugins/eap_sim/eap_sim_server.c new file mode 100644 index 000000000..f6d5df09b --- /dev/null +++ b/src/libcharon/plugins/eap_sim/eap_sim_server.c @@ -0,0 +1,611 @@ +/* + * Copyright (C) 2007-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_sim_server.h" + +#include <daemon.h> + +#include <simaka_message.h> +#include <simaka_crypto.h> + +/* number of triplets for one authentication */ +#define TRIPLET_COUNT 3 + +/** length of the AT_NONCE_S value */ +#define NONCE_LEN 16 + +typedef struct private_eap_sim_server_t private_eap_sim_server_t; + +/** + * Private data of an eap_sim_server_t object. + */ +struct private_eap_sim_server_t { + + /** + * Public authenticator_t interface. + */ + eap_sim_server_t public; + + /** + * permanent ID of peer + */ + identification_t *permanent; + + /** + * pseudonym ID of peer + */ + identification_t *pseudonym; + + /** + * reauthentication ID of peer + */ + identification_t *reauth; + + /** + * EAP-SIM/AKA crypto helper + */ + simaka_crypto_t *crypto; + + /** + * unique EAP identifier + */ + u_int8_t identifier; + + /** + * concatenated SRES values + */ + chunk_t sreses; + + /** + * Nonce value used in AT_NONCE_S + */ + chunk_t nonce; + + /** + * Counter value negotiated, network order + */ + chunk_t counter; + + /** + * MSK, used for EAP-SIM based IKEv2 authentication + */ + chunk_t msk; + + /** + * Do we request fast reauthentication? + */ + bool use_reauth; + + /** + * Do we request pseudonym identities? + */ + bool use_pseudonym; + + /** + * Do we request permanent identities? + */ + bool use_permanent; + + /** + * EAP-SIM message we have initiated + */ + simaka_subtype_t pending; +}; + +/* version of SIM protocol we speak */ +static chunk_t version = chunk_from_chars(0x00,0x01); + +/** + * Implementation of eap_method_t.initiate + */ +static status_t initiate(private_eap_sim_server_t *this, eap_payload_t **out) +{ + simaka_message_t *message; + + message = simaka_message_create(TRUE, this->identifier++, EAP_SIM, + SIM_START, this->crypto); + message->add_attribute(message, AT_VERSION_LIST, version); + if (this->use_reauth) + { + message->add_attribute(message, AT_ANY_ID_REQ, chunk_empty); + } + else if (this->use_pseudonym) + { + message->add_attribute(message, AT_FULLAUTH_ID_REQ, chunk_empty); + } + else if (this->use_permanent) + { + message->add_attribute(message, AT_PERMANENT_ID_REQ, chunk_empty); + } + *out = message->generate(message, chunk_empty); + message->destroy(message); + + this->pending = SIM_START; + return NEED_MORE; +} + +/** + * Initiate EAP-SIM/Request/Re-authentication message + */ +static status_t reauthenticate(private_eap_sim_server_t *this, + char mk[HASH_SIZE_SHA1], u_int16_t counter, + eap_payload_t **out) +{ + simaka_message_t *message; + identification_t *next; + chunk_t mkc; + rng_t *rng; + + DBG1(DBG_IKE, "initiating EAP-SIM reauthentication"); + + rng = this->crypto->get_rng(this->crypto); + rng->allocate_bytes(rng, NONCE_LEN, &this->nonce); + + mkc = chunk_create(mk, HASH_SIZE_SHA1); + counter = htons(counter); + this->counter = chunk_clone(chunk_create((char*)&counter, sizeof(counter))); + + this->crypto->derive_keys_reauth(this->crypto, mkc); + this->msk = this->crypto->derive_keys_reauth_msk(this->crypto, + this->reauth, this->counter, this->nonce, mkc); + + message = simaka_message_create(TRUE, this->identifier++, EAP_SIM, + SIM_REAUTHENTICATION, this->crypto); + message->add_attribute(message, AT_COUNTER, this->counter); + message->add_attribute(message, AT_NONCE_S, this->nonce); + next = charon->sim->provider_gen_reauth(charon->sim, this->permanent, mk); + if (next) + { + message->add_attribute(message, AT_NEXT_REAUTH_ID, + next->get_encoding(next)); + next->destroy(next); + } + *out = message->generate(message, chunk_empty); + message->destroy(message); + + this->pending = SIM_REAUTHENTICATION; + return NEED_MORE; +} + +/** + * process an EAP-SIM/Response/Reauthentication message + */ +static status_t process_reauthentication(private_eap_sim_server_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data, counter = chunk_empty; + bool too_small = FALSE; + + if (this->pending != SIM_REAUTHENTICATION) + { + DBG1(DBG_IKE, "received %N, but not expected", + simaka_subtype_names, SIM_REAUTHENTICATION); + return FAILED; + } + /* verify AT_MAC attribute, signature is over "EAP packet | NONCE_S" */ + if (!in->verify(in, this->nonce)) + { + return FAILED; + } + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_COUNTER: + counter = data; + break; + case AT_COUNTER_TOO_SMALL: + too_small = TRUE; + break; + default: + if (!simaka_attribute_skippable(type)) + { + enumerator->destroy(enumerator); + return FAILED; + } + break; + } + } + enumerator->destroy(enumerator); + + if (too_small) + { + DBG1(DBG_IKE, "received %N, initiating full authentication", + simaka_attribute_names, AT_COUNTER_TOO_SMALL); + this->use_reauth = FALSE; + this->crypto->clear_keys(this->crypto); + return initiate(this, out); + } + if (!chunk_equals(counter, this->counter)) + { + DBG1(DBG_IKE, "received counter does not match"); + return FAILED; + } + return SUCCESS; +} + +/** + * process an EAP-SIM/Response/Start message + */ +static status_t process_start(private_eap_sim_server_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + simaka_message_t *message; + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data, identity = chunk_empty, nonce = chunk_empty, mk; + chunk_t rands, rand, kcs, kc, sreses, sres; + bool supported = FALSE; + identification_t *id; + int i; + + if (this->pending != SIM_START) + { + DBG1(DBG_IKE, "received %N, but not expected", + simaka_subtype_names, SIM_START); + return FAILED; + } + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + switch (type) + { + case AT_NONCE_MT: + nonce = data; + break; + case AT_SELECTED_VERSION: + if (chunk_equals(data, version)) + { + supported = TRUE; + } + break; + case AT_IDENTITY: + identity = data; + break; + default: + if (!simaka_attribute_skippable(type)) + { + enumerator->destroy(enumerator); + return FAILED; + } + break; + } + } + enumerator->destroy(enumerator); + + if (identity.len) + { + identification_t *permanent; + + id = identification_create_from_data(identity); + if (this->use_reauth && !nonce.len) + { + char mk[HASH_SIZE_SHA1]; + u_int16_t counter; + + permanent = charon->sim->provider_is_reauth(charon->sim, id, + mk, &counter); + if (permanent) + { + this->permanent->destroy(this->permanent); + this->permanent = permanent; + this->reauth = id; + return reauthenticate(this, mk, counter, out); + } + DBG1(DBG_IKE, "received unknown reauthentication identity '%Y', " + "initiating full authentication", id); + this->use_reauth = FALSE; + id->destroy(id); + return initiate(this, out); + } + if (this->use_pseudonym) + { + permanent = charon->sim->provider_is_pseudonym(charon->sim, id); + if (permanent) + { + this->permanent->destroy(this->permanent); + this->permanent = permanent; + this->pseudonym = id->clone(id); + /* we already have a new permanent identity now */ + this->use_permanent = FALSE; + } + } + if (!this->pseudonym && this->use_permanent) + { + DBG1(DBG_IKE, "received %spermanent identity '%Y'", + this->use_pseudonym ? "pseudonym or " : "", id); + this->permanent->destroy(this->permanent); + this->permanent = id->clone(id); + } + id->destroy(id); + } + + if (!supported || !nonce.len) + { + DBG1(DBG_IKE, "received incomplete EAP-SIM/Response/Start"); + return FAILED; + } + + /* read triplets from provider */ + rand = rands = chunk_alloca(SIM_RAND_LEN * TRIPLET_COUNT); + kc = kcs = chunk_alloca(SIM_KC_LEN * TRIPLET_COUNT); + sres = sreses = chunk_alloca(SIM_SRES_LEN * TRIPLET_COUNT); + rands.len = kcs.len = sreses.len = 0; + for (i = 0; i < TRIPLET_COUNT; i++) + { + if (!charon->sim->provider_get_triplet(charon->sim, this->permanent, + rand.ptr, sres.ptr, kc.ptr)) + { + if (this->use_pseudonym) + { + /* probably received a pseudonym we couldn't map */ + DBG1(DBG_IKE, "failed to map pseudonym identity '%Y', " + "fallback to permanent identity request", this->permanent); + this->use_pseudonym = FALSE; + DESTROY_IF(this->pseudonym); + this->pseudonym = NULL; + return initiate(this, out); + } + return FAILED; + } + rands.len += SIM_RAND_LEN; + sreses.len += SIM_SRES_LEN; + kcs.len += SIM_KC_LEN; + rand = chunk_skip(rand, SIM_RAND_LEN); + sres = chunk_skip(sres, SIM_SRES_LEN); + kc = chunk_skip(kc, SIM_KC_LEN); + } + free(this->sreses.ptr); + this->sreses = chunk_clone(sreses); + + data = chunk_cata("cccc", kcs, nonce, version, version); + free(this->msk.ptr); + id = this->permanent; + if (this->pseudonym) + { + id = this->pseudonym; + } + this->msk = this->crypto->derive_keys_full(this->crypto, id, data, &mk); + + /* build response with AT_MAC, built over "EAP packet | NONCE_MT" */ + message = simaka_message_create(TRUE, this->identifier++, EAP_SIM, + SIM_CHALLENGE, this->crypto); + message->add_attribute(message, AT_RAND, rands); + id = charon->sim->provider_gen_reauth(charon->sim, this->permanent, mk.ptr); + if (id) + { + message->add_attribute(message, AT_NEXT_REAUTH_ID, + id->get_encoding(id)); + id->destroy(id); + } + else + { + id = charon->sim->provider_gen_pseudonym(charon->sim, this->permanent); + if (id) + { + message->add_attribute(message, AT_NEXT_PSEUDONYM, + id->get_encoding(id)); + id->destroy(id); + } + } + *out = message->generate(message, nonce); + message->destroy(message); + + free(mk.ptr); + this->pending = SIM_CHALLENGE; + return NEED_MORE; +} + +/** + * process an EAP-SIM/Response/Challenge message + */ +static status_t process_challenge(private_eap_sim_server_t *this, + simaka_message_t *in, eap_payload_t **out) +{ + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data; + + if (this->pending != SIM_CHALLENGE) + { + DBG1(DBG_IKE, "received %N, but not expected", + simaka_subtype_names, SIM_CHALLENGE); + return FAILED; + } + /* verify AT_MAC attribute, signature is over "EAP packet | n*SRES" */ + if (!in->verify(in, this->sreses)) + { + return FAILED; + } + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + if (!simaka_attribute_skippable(type)) + { + enumerator->destroy(enumerator); + return FAILED; + } + } + enumerator->destroy(enumerator); + + return SUCCESS; +} + +/** + * EAP-SIM/Response/ClientErrorCode message + */ +static status_t process_client_error(private_eap_sim_server_t *this, + simaka_message_t *in) +{ + enumerator_t *enumerator; + simaka_attribute_t type; + chunk_t data; + + enumerator = in->create_attribute_enumerator(in); + while (enumerator->enumerate(enumerator, &type, &data)) + { + if (type == AT_CLIENT_ERROR_CODE) + { + u_int16_t code; + + memcpy(&code, data.ptr, sizeof(code)); + DBG1(DBG_IKE, "received EAP-SIM client error '%N'", + simaka_client_error_names, ntohs(code)); + } + else if (!simaka_attribute_skippable(type)) + { + break; + } + } + enumerator->destroy(enumerator); + return FAILED; +} + +/** + * Implementation of eap_method_t.process + */ +static status_t process(private_eap_sim_server_t *this, + eap_payload_t *in, eap_payload_t **out) +{ + simaka_message_t *message; + status_t status; + + message = simaka_message_create_from_payload(in, this->crypto); + if (!message) + { + return FAILED; + } + if (!message->parse(message)) + { + message->destroy(message); + return FAILED; + } + switch (message->get_subtype(message)) + { + case SIM_START: + status = process_start(this, message, out); + break; + case SIM_CHALLENGE: + status = process_challenge(this, message, out); + break; + case SIM_REAUTHENTICATION: + status = process_reauthentication(this, message, out); + break; + case SIM_CLIENT_ERROR: + status = process_client_error(this, message); + break; + default: + DBG1(DBG_IKE, "unable to process EAP-SIM subtype %N", + simaka_subtype_names, message->get_subtype(message)); + status = FAILED; + break; + } + message->destroy(message); + return status; +} + +/** + * Implementation of eap_method_t.get_type. + */ +static eap_type_t get_type(private_eap_sim_server_t *this, u_int32_t *vendor) +{ + *vendor = 0; + return EAP_SIM; +} + +/** + * Implementation of eap_method_t.get_msk. + */ +static status_t get_msk(private_eap_sim_server_t *this, chunk_t *msk) +{ + if (this->msk.ptr) + { + *msk = this->msk; + return SUCCESS; + } + return FAILED; +} + +/** + * Implementation of eap_method_t.is_mutual. + */ +static bool is_mutual(private_eap_sim_server_t *this) +{ + return TRUE; +} + +/** + * Implementation of eap_method_t.destroy. + */ +static void destroy(private_eap_sim_server_t *this) +{ + this->crypto->destroy(this->crypto); + this->permanent->destroy(this->permanent); + DESTROY_IF(this->pseudonym); + DESTROY_IF(this->reauth); + free(this->sreses.ptr); + free(this->nonce.ptr); + free(this->msk.ptr); + free(this->counter.ptr); + free(this); +} + +/* + * Described in header. + */ +eap_sim_server_t *eap_sim_server_create(identification_t *server, + identification_t *peer) +{ + private_eap_sim_server_t *this = malloc_thing(private_eap_sim_server_t); + + this->public.interface.initiate = (status_t(*)(eap_method_t*,eap_payload_t**))initiate; + this->public.interface.process = (status_t(*)(eap_method_t*,eap_payload_t*,eap_payload_t**))process; + this->public.interface.get_type = (eap_type_t(*)(eap_method_t*,u_int32_t*))get_type; + this->public.interface.is_mutual = (bool(*)(eap_method_t*))is_mutual; + this->public.interface.get_msk = (status_t(*)(eap_method_t*,chunk_t*))get_msk; + this->public.interface.destroy = (void(*)(eap_method_t*))destroy; + + this->crypto = simaka_crypto_create(); + if (!this->crypto) + { + free(this); + return NULL; + } + this->permanent = peer->clone(peer); + this->pseudonym = NULL; + this->reauth = NULL; + this->sreses = chunk_empty; + this->nonce = chunk_empty; + this->msk = chunk_empty; + this->counter = chunk_empty; + this->pending = 0; + this->use_reauth = this->use_pseudonym = this->use_permanent = + lib->settings->get_bool(lib->settings, + "charon.plugins.eap-sim.request_identity", TRUE); + + /* generate a non-zero identifier */ + do { + this->identifier = random(); + } while (!this->identifier); + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_sim/eap_sim_server.h b/src/libcharon/plugins/eap_sim/eap_sim_server.h new file mode 100644 index 000000000..978e1e1e9 --- /dev/null +++ b/src/libcharon/plugins/eap_sim/eap_sim_server.h @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_sim_server eap_sim_server + * @{ @ingroup eap_sim + */ + +#ifndef EAP_SIM_SERVER_H_ +#define EAP_SIM_SERVER_H_ + +#include <sa/authenticators/eap/eap_method.h> + +typedef struct eap_sim_server_t eap_sim_server_t; + +/** + * EAP-SIM server implementation. + * + * This EAP-SIM module uses sim_provider_t implementations for triplet + * calculation, found via the eap_sim_manager_t. + */ +struct eap_sim_server_t { + + /** + * Implemented eap_method_t interface. + */ + eap_method_t interface; + + /** + * Destroy a eap_sim_server_t. + */ + void (*destroy)(eap_sim_server_t *this); +}; + +/** + * Creates the EAP method EAP-SIM acting as server. + * + * @param server ID of the EAP server + * @param peer ID of the EAP peer + * @return eap_sim_t object + */ +eap_sim_server_t *eap_sim_server_create(identification_t *server, + identification_t *peer); + +#endif /** EAP_SIM_SERVER_H_ @}*/ diff --git a/src/libcharon/plugins/eap_sim_file/Makefile.am b/src/libcharon/plugins/eap_sim_file/Makefile.am new file mode 100644 index 000000000..2b59a7c88 --- /dev/null +++ b/src/libcharon/plugins/eap_sim_file/Makefile.am @@ -0,0 +1,19 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic -DIPSEC_CONFDIR=\"${sysconfdir}\" + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-eap-sim-file.la +else +plugin_LTLIBRARIES = libstrongswan-eap-sim-file.la +endif + +libstrongswan_eap_sim_file_la_SOURCES = \ + eap_sim_file_plugin.h eap_sim_file_plugin.c \ + eap_sim_file_card.h eap_sim_file_card.c \ + eap_sim_file_provider.h eap_sim_file_provider.c \ + eap_sim_file_triplets.h eap_sim_file_triplets.c + +libstrongswan_eap_sim_file_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/eap_sim_file/Makefile.in b/src/libcharon/plugins/eap_sim_file/Makefile.in new file mode 100644 index 000000000..2d998dbcc --- 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index 000000000..d132a38f6 --- /dev/null +++ b/src/libcharon/plugins/eap_sim_file/eap_sim_file_card.c @@ -0,0 +1,107 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_sim_file_card.h" + +#include <daemon.h> + +typedef struct private_eap_sim_file_card_t private_eap_sim_file_card_t; + +/** + * Private data of an eap_sim_file_card_t object. + */ +struct private_eap_sim_file_card_t { + + /** + * Public eap_sim_file_card_t interface. + */ + eap_sim_file_card_t public; + + /** + * source of triplets + */ + eap_sim_file_triplets_t *triplets; +}; + +/** + * Implementation of sim_card_t.get_triplet + */ +static bool get_triplet(private_eap_sim_file_card_t *this, + identification_t *id, char *rand, char *sres, char *kc) +{ + enumerator_t *enumerator; + identification_t *cand; + char *c_rand, *c_sres, *c_kc; + + DBG2(DBG_CFG, "looking for triplet: %Y rand %b", id, rand, SIM_RAND_LEN); + + enumerator = this->triplets->create_enumerator(this->triplets); + while (enumerator->enumerate(enumerator, &cand, &c_rand, &c_sres, &c_kc)) + { + DBG2(DBG_CFG, "got a triplet: %Y rand %b\nsres %b\n kc %b", cand, + c_rand, SIM_RAND_LEN, c_sres, SIM_SRES_LEN, c_kc, SIM_KC_LEN); + if (id->matches(id, cand)) + { + if (memeq(c_rand, rand, SIM_RAND_LEN)) + { + DBG2(DBG_CFG, " => triplet matches"); + memcpy(sres, c_sres, SIM_SRES_LEN); + memcpy(kc, c_kc, SIM_KC_LEN); + enumerator->destroy(enumerator); + return TRUE; + } + } + } + enumerator->destroy(enumerator); + return FALSE; +} + +/** + * Implementation of sim_card_t.get_quintuplet + */ +static status_t get_quintuplet() +{ + return NOT_SUPPORTED; +} + +/** + * Implementation of eap_sim_file_card_t.destroy. + */ +static void destroy(private_eap_sim_file_card_t *this) +{ + free(this); +} + +/** + * See header + */ +eap_sim_file_card_t *eap_sim_file_card_create(eap_sim_file_triplets_t *triplets) +{ + private_eap_sim_file_card_t *this = malloc_thing(private_eap_sim_file_card_t); + + this->public.card.get_triplet = (bool(*)(sim_card_t*, identification_t *id, char rand[SIM_RAND_LEN], char sres[SIM_SRES_LEN], char kc[SIM_KC_LEN]))get_triplet; + this->public.card.get_quintuplet = (status_t(*)(sim_card_t*, identification_t *id, char rand[AKA_RAND_LEN], char autn[AKA_AUTN_LEN], char ck[AKA_CK_LEN], char ik[AKA_IK_LEN], char res[AKA_RES_MAX], int *res_len))get_quintuplet; + this->public.card.resync = (bool(*)(sim_card_t*, identification_t *id, char rand[AKA_RAND_LEN], char auts[AKA_AUTS_LEN]))return_false; + this->public.card.get_pseudonym = (identification_t*(*)(sim_card_t*, identification_t *perm))return_null; + this->public.card.set_pseudonym = (void(*)(sim_card_t*, identification_t *id, identification_t *pseudonym))nop; + this->public.card.get_reauth = (identification_t*(*)(sim_card_t*, identification_t *id, char mk[HASH_SIZE_SHA1], u_int16_t *counter))return_null; + this->public.card.set_reauth = (void(*)(sim_card_t*, identification_t *id, identification_t* next, char mk[HASH_SIZE_SHA1], u_int16_t counter))nop; + this->public.destroy = (void(*)(eap_sim_file_card_t*))destroy; + + this->triplets = triplets; + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_sim_file/eap_sim_file_card.h b/src/libcharon/plugins/eap_sim_file/eap_sim_file_card.h new file mode 100644 index 000000000..1a5470968 --- /dev/null +++ b/src/libcharon/plugins/eap_sim_file/eap_sim_file_card.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_sim_file_card eap_sim_file_card + * @{ @ingroup eap_sim_file + */ + +#ifndef EAP_SIM_FILE_CARD_H_ +#define EAP_SIM_FILE_CARD_H_ + +#include "eap_sim_file_triplets.h" + +#include <sa/authenticators/eap/sim_manager.h> + +typedef struct eap_sim_file_card_t eap_sim_file_card_t; + +/** + * SIM card implementation on top of a triplet file. + */ +struct eap_sim_file_card_t { + + /** + * Implements sim_card_t interface + */ + sim_card_t card; + + /** + * Destroy a eap_sim_file_card_t. + */ + void (*destroy)(eap_sim_file_card_t *this); +}; + +/** + * Create a eap_sim_file_card instance. + * + * @param triplets source of triplets + */ +eap_sim_file_card_t *eap_sim_file_card_create(eap_sim_file_triplets_t *triplets); + +#endif /** EAP_SIM_FILE_CARD_H_ @}*/ diff --git a/src/libcharon/plugins/eap_sim_file/eap_sim_file_plugin.c b/src/libcharon/plugins/eap_sim_file/eap_sim_file_plugin.c new file mode 100644 index 000000000..4f25c35ea --- /dev/null +++ b/src/libcharon/plugins/eap_sim_file/eap_sim_file_plugin.c @@ -0,0 +1,90 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_sim_file_plugin.h" +#include "eap_sim_file_card.h" +#include "eap_sim_file_provider.h" +#include "eap_sim_file_triplets.h" + +#include <daemon.h> + +#define TRIPLET_FILE IPSEC_CONFDIR "/ipsec.d/triplets.dat" + +typedef struct private_eap_sim_file_t private_eap_sim_file_t; + +/** + * Private data of an eap_sim_file_t object. + */ +struct private_eap_sim_file_t { + + /** + * Public eap_sim_file_plugin_t interface. + */ + eap_sim_file_plugin_t public; + + /** + * SIM card + */ + eap_sim_file_card_t *card; + + /** + * SIM provider + */ + eap_sim_file_provider_t *provider; + + /** + * Triplet source + */ + eap_sim_file_triplets_t *triplets; +}; + +/** + * Implementation of eap_sim_file_t.destroy. + */ +static void destroy(private_eap_sim_file_t *this) +{ + charon->sim->remove_card(charon->sim, &this->card->card); + charon->sim->remove_provider(charon->sim, &this->provider->provider); + this->card->destroy(this->card); + this->provider->destroy(this->provider); + this->triplets->destroy(this->triplets); + free(this); +} + +/** + * See header + */ +plugin_t *eap_sim_file_plugin_create() +{ + private_eap_sim_file_t *this = malloc_thing(private_eap_sim_file_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + this->triplets = eap_sim_file_triplets_create(TRIPLET_FILE); + this->provider = eap_sim_file_provider_create(this->triplets); + if (!this->provider) + { + this->triplets->destroy(this->triplets); + free(this); + return NULL; + } + this->card = eap_sim_file_card_create(this->triplets); + + charon->sim->add_card(charon->sim, &this->card->card); + charon->sim->add_provider(charon->sim, &this->provider->provider); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/eap_sim_file/eap_sim_file_plugin.h b/src/libcharon/plugins/eap_sim_file/eap_sim_file_plugin.h new file mode 100644 index 000000000..f5083c72f --- /dev/null +++ b/src/libcharon/plugins/eap_sim_file/eap_sim_file_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_sim_file eap_sim_file + * @ingroup cplugins + * + * @defgroup eap_sim_file_plugin eap_sim_file_plugin + * @{ @ingroup eap_sim_file + */ + +#ifndef EAP_SIM_FILE_PLUGIN_H_ +#define EAP_SIM_FILE_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct eap_sim_file_plugin_t eap_sim_file_plugin_t; + +/** + * Plugin to provide a SIM card/provider on top of a triplet file. + */ +struct eap_sim_file_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** EAP_SIM_FILE_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/eap_sim_file/eap_sim_file_provider.c b/src/libcharon/plugins/eap_sim_file/eap_sim_file_provider.c new file mode 100644 index 000000000..9bee31fc3 --- /dev/null +++ b/src/libcharon/plugins/eap_sim_file/eap_sim_file_provider.c @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_sim_file_provider.h" + +#include <daemon.h> + +typedef struct private_eap_sim_file_provider_t private_eap_sim_file_provider_t; + +/** + * Private data of an eap_sim_file_provider_t object. + */ +struct private_eap_sim_file_provider_t { + + /** + * Public eap_sim_file_provider_t interface. + */ + eap_sim_file_provider_t public; + + /** + * source of triplets + */ + eap_sim_file_triplets_t *triplets; +}; + +/** + * Implementation of sim_provider_t.get_triplet + */ +static bool get_triplet(private_eap_sim_file_provider_t *this, + identification_t *id, char *rand, char *sres, char *kc) +{ + enumerator_t *enumerator; + identification_t *cand; + char *c_rand, *c_sres, *c_kc; + + enumerator = this->triplets->create_enumerator(this->triplets); + while (enumerator->enumerate(enumerator, &cand, &c_rand, &c_sres, &c_kc)) + { + if (id->matches(id, cand)) + { + memcpy(rand, c_rand, SIM_RAND_LEN); + memcpy(sres, c_sres, SIM_SRES_LEN); + memcpy(kc, c_kc, SIM_KC_LEN); + enumerator->destroy(enumerator); + return TRUE; + } + } + enumerator->destroy(enumerator); + return FALSE; +} + +/** + * Implementation of eap_sim_file_provider_t.destroy. + */ +static void destroy(private_eap_sim_file_provider_t *this) +{ + free(this); +} + +/** + * See header + */ +eap_sim_file_provider_t *eap_sim_file_provider_create( + eap_sim_file_triplets_t *triplets) +{ + private_eap_sim_file_provider_t *this = malloc_thing(private_eap_sim_file_provider_t); + + this->public.provider.get_triplet = (bool(*)(sim_provider_t*, identification_t *id, char rand[SIM_RAND_LEN], char sres[SIM_SRES_LEN], char kc[SIM_KC_LEN]))get_triplet; + this->public.provider.get_quintuplet = (bool(*)(sim_provider_t*, identification_t *id, char rand[AKA_RAND_LEN], char xres[AKA_RES_MAX], int *xres_len, char ck[AKA_CK_LEN], char ik[AKA_IK_LEN], char autn[AKA_AUTN_LEN]))return_false; + this->public.provider.resync = (bool(*)(sim_provider_t*, identification_t *id, char rand[AKA_RAND_LEN], char auts[AKA_AUTS_LEN]))return_false; + this->public.provider.is_pseudonym = (identification_t*(*)(sim_provider_t*, identification_t *id))return_null; + this->public.provider.gen_pseudonym = (identification_t*(*)(sim_provider_t*, identification_t *id))return_null; + this->public.provider.is_reauth = (identification_t*(*)(sim_provider_t*, identification_t *id, char [HASH_SIZE_SHA1], u_int16_t *counter))return_null; + this->public.provider.gen_reauth = (identification_t*(*)(sim_provider_t*, identification_t *id, char mk[HASH_SIZE_SHA1]))return_null; + this->public.destroy = (void(*)(eap_sim_file_provider_t*))destroy; + + this->triplets = triplets; + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_sim_file/eap_sim_file_provider.h b/src/libcharon/plugins/eap_sim_file/eap_sim_file_provider.h new file mode 100644 index 000000000..10fda282a --- /dev/null +++ b/src/libcharon/plugins/eap_sim_file/eap_sim_file_provider.h @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_sim_file_provider eap_sim_file_provider + * @{ @ingroup eap_sim_file + */ + +#ifndef EAP_SIM_FILE_PROVIDER_H_ +#define EAP_SIM_FILE_PROVIDER_H_ + +#include "eap_sim_file_triplets.h" + +typedef struct eap_sim_file_provider_t eap_sim_file_provider_t; + +/** + * SIM provider implementation on top of triplets file. + */ +struct eap_sim_file_provider_t { + + /** + * Implements sim_provider_t interface. + */ + sim_provider_t provider; + + /** + * Destroy a eap_sim_file_provider_t. + */ + void (*destroy)(eap_sim_file_provider_t *this); +}; + +/** + * Create a eap_sim_file_provider instance. + */ +eap_sim_file_provider_t *eap_sim_file_provider_create( + eap_sim_file_triplets_t *triplets); + +#endif /** EAP_SIM_FILE_PROVIDER_H_ @}*/ diff --git a/src/libcharon/plugins/eap_sim_file/eap_sim_file_triplets.c b/src/libcharon/plugins/eap_sim_file/eap_sim_file_triplets.c new file mode 100644 index 000000000..6b7d99fb7 --- /dev/null +++ b/src/libcharon/plugins/eap_sim_file/eap_sim_file_triplets.c @@ -0,0 +1,260 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_sim_file_triplets.h" + +#include <stdio.h> +#include <errno.h> + +#include <daemon.h> +#include <utils/linked_list.h> +#include <threading/mutex.h> + +typedef struct private_eap_sim_file_triplets_t private_eap_sim_file_triplets_t; + +/** + * Private data of an eap_sim_file_triplets_t object. + */ +struct private_eap_sim_file_triplets_t { + + /** + * Public eap_sim_file_triplets_t interface. + */ + eap_sim_file_triplets_t public; + + /** + * List of triplets, as triplet_t + */ + linked_list_t *triplets; + + /** + * mutex to lock triplets list + */ + mutex_t *mutex; +}; + +/** + * A single triplet + */ +typedef struct { + identification_t *imsi; + char rand[SIM_RAND_LEN]; + char sres[SIM_SRES_LEN]; + char kc[SIM_KC_LEN]; +} triplet_t; + +/** + * Destroy a triplet + */ +static void triplet_destroy(triplet_t *this) +{ + DESTROY_IF(this->imsi); + free(this); +} + +/** + * triplet enumerator + */ +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** inner enumerator */ + enumerator_t *inner; + /** current enumerating triplet */ + triplet_t *current; + /** back ptr */ + private_eap_sim_file_triplets_t *this; +} triplet_enumerator_t; + +/** + * destroy a triplet enumerator + */ +static void enumerator_destroy(triplet_enumerator_t *e) +{ + if (e->current) + { + /* We assume that the current element is used on invocation if destroy. + * We move that triplet to the end to avoid handout of the same triplet + * next time. */ + e->this->triplets->remove_at(e->this->triplets, e->inner); + e->this->triplets->insert_last(e->this->triplets, e->current); + } + e->inner->destroy(e->inner); + e->this->mutex->unlock(e->this->mutex); + free(e); +} + +/** + * enumerate through triplets + */ +static bool enumerator_enumerate(triplet_enumerator_t *e, identification_t **imsi, + char **rand, char **sres, char **kc) +{ + triplet_t *triplet; + + if (e->inner->enumerate(e->inner, &triplet)) + { + e->current = triplet; + *imsi = triplet->imsi; + *rand = triplet->rand; + *sres = triplet->sres; + *kc = triplet->kc; + return TRUE; + } + e->current = NULL; + return FALSE; +} + +/** + * Implementation of eap_sim_file_triplets_t.create_enumerator + */ +static enumerator_t* create_enumerator(private_eap_sim_file_triplets_t *this) +{ + triplet_enumerator_t *enumerator = malloc_thing(triplet_enumerator_t); + + this->mutex->lock(this->mutex); + enumerator->public.enumerate = (void*)enumerator_enumerate; + enumerator->public.destroy = (void*)enumerator_destroy; + enumerator->inner = this->triplets->create_enumerator(this->triplets); + enumerator->current = NULL; + enumerator->this = this; + + return &enumerator->public; +} + +/** + * convert to token into the array + */ +static void parse_token(char *to, char *from, size_t len) +{ + chunk_t chunk; + + chunk = chunk_create(from, min(strlen(from), len * 2)); + chunk = chunk_from_hex(chunk, NULL); + memset(to, 0, len); + memcpy(to + len - chunk.len, chunk.ptr, chunk.len); + free(chunk.ptr); +} + +/** + * Read the triplets from the file + */ +static void read_triplets(private_eap_sim_file_triplets_t *this, char *path) +{ + char line[512]; + FILE *file; + int i, nr = 0; + + file = fopen(path, "r"); + if (file == NULL) + { + DBG1(DBG_CFG, "opening triplet file %s failed: %s", + path, strerror(errno)); + return; + } + + /* read line by line */ + while (fgets(line, sizeof(line), file)) + { + triplet_t *triplet; + enumerator_t *enumerator; + char *token; + + nr++; + /* skip comments, empty lines */ + switch (line[0]) + { + case '\n': + case '\r': + case '#': + case '\0': + continue; + default: + break; + } + triplet = malloc_thing(triplet_t); + memset(triplet, 0, sizeof(triplet_t)); + + i = 0; + enumerator = enumerator_create_token(line, ",", " \n\r#"); + while (enumerator->enumerate(enumerator, &token)) + { + switch (i++) + { + case 0: /* IMSI */ + triplet->imsi = identification_create_from_string(token); + continue; + case 1: /* rand */ + parse_token(triplet->rand, token, SIM_RAND_LEN); + continue; + case 2: /* sres */ + parse_token(triplet->sres, token, SIM_SRES_LEN); + continue; + case 3: /* kc */ + parse_token(triplet->kc, token, SIM_KC_LEN); + continue; + default: + break;; + } + break; + } + enumerator->destroy(enumerator); + if (i < 4) + { + DBG1(DBG_CFG, "error in triplet file, line %d", nr); + triplet_destroy(triplet); + continue; + } + + DBG2(DBG_CFG, "triplet: imsi %Y\nrand %b\nsres %b\nkc %b", + triplet->imsi, triplet->rand, SIM_RAND_LEN, + triplet->sres, SIM_SRES_LEN, triplet->kc, SIM_KC_LEN); + + this->triplets->insert_last(this->triplets, triplet); + } + fclose(file); + + DBG1(DBG_CFG, "read %d triplets from %s", + this->triplets->get_count(this->triplets), path); +} + +/** + * Implementation of eap_sim_file_triplets_t.destroy. + */ +static void destroy(private_eap_sim_file_triplets_t *this) +{ + this->triplets->destroy_function(this->triplets, (void*)triplet_destroy); + this->mutex->destroy(this->mutex); + free(this); +} + +/** + * See header + */ +eap_sim_file_triplets_t *eap_sim_file_triplets_create(char *file) +{ + private_eap_sim_file_triplets_t *this = malloc_thing(private_eap_sim_file_triplets_t); + + this->public.create_enumerator = (enumerator_t*(*)(eap_sim_file_triplets_t*))create_enumerator; + this->public.destroy = (void(*)(eap_sim_file_triplets_t*))destroy; + + this->triplets = linked_list_create(); + this->mutex = mutex_create(MUTEX_TYPE_DEFAULT); + + read_triplets(this, file); + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_sim_file/eap_sim_file_triplets.h b/src/libcharon/plugins/eap_sim_file/eap_sim_file_triplets.h new file mode 100644 index 000000000..8f8130810 --- /dev/null +++ b/src/libcharon/plugins/eap_sim_file/eap_sim_file_triplets.h @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_sim_file_triplets eap_sim_file_triplets + * @{ @ingroup eap_sim_file + */ + +#ifndef EAP_SIM_FILE_TRIPLETS_H_ +#define EAP_SIM_FILE_TRIPLETS_H_ + +#include <sa/authenticators/eap/sim_manager.h> + +typedef struct eap_sim_file_triplets_t eap_sim_file_triplets_t; + +/** + * Reads triplets from a triplets.dat file. + * + * The file is in freeradius triplet file syntax: + * http://www.freeradius.org/radiusd/doc/rlm_sim_triplets + */ +struct eap_sim_file_triplets_t { + + /** + * Create an enumerator over the file's triplets. + * + * @return enumerator over (identity, rand, sres, kc) + */ + enumerator_t* (*create_enumerator)(eap_sim_file_triplets_t *this); + + /** + * Destroy a eap_sim_file_triplets_t. + */ + void (*destroy)(eap_sim_file_triplets_t *this); +}; + +/** + * Create a eap_sim_file_triplets instance. + * + * @param file triplet file to read from + */ +eap_sim_file_triplets_t *eap_sim_file_triplets_create(char *file); + +#endif /** EAP_SIM_FILE_TRIPLETS_H_ @}*/ diff --git a/src/libcharon/plugins/eap_simaka_pseudonym/Makefile.am b/src/libcharon/plugins/eap_simaka_pseudonym/Makefile.am new file mode 100644 index 000000000..a158d6dbe --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_pseudonym/Makefile.am @@ -0,0 +1,18 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-eap-simaka-pseudonym.la +else +plugin_LTLIBRARIES = libstrongswan-eap-simaka-pseudonym.la +endif + +libstrongswan_eap_simaka_pseudonym_la_SOURCES = \ + eap_simaka_pseudonym_plugin.h eap_simaka_pseudonym_plugin.c \ + eap_simaka_pseudonym_card.h eap_simaka_pseudonym_card.c \ + eap_simaka_pseudonym_provider.h eap_simaka_pseudonym_provider.c + +libstrongswan_eap_simaka_pseudonym_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/eap_simaka_pseudonym/Makefile.in b/src/libcharon/plugins/eap_simaka_pseudonym/Makefile.in new file mode 100644 index 000000000..6c44ea2bb --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_pseudonym/Makefile.in @@ -0,0 +1,594 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = 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all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_card.c b/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_card.c new file mode 100644 index 000000000..9b0f1bc71 --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_card.c @@ -0,0 +1,154 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_simaka_pseudonym_card.h" + +#include <daemon.h> +#include <utils/hashtable.h> + +typedef struct private_eap_simaka_pseudonym_card_t private_eap_simaka_pseudonym_card_t; + +/** + * Private data of an eap_simaka_pseudonym_card_t object. + */ +struct private_eap_simaka_pseudonym_card_t { + + /** + * Public eap_simaka_pseudonym_card_t interface. + */ + eap_simaka_pseudonym_card_t public; + + /** + * Permanent -> pseudonym mappings + */ + hashtable_t *pseudonym; + + /** + * Reverse pseudonym -> permanent mappings + */ + hashtable_t *permanent; +}; + +/** + * hashtable hash function + */ +static u_int hash(identification_t *key) +{ + return chunk_hash(key->get_encoding(key)); +} + +/** + * hashtable equals function + */ +static bool equals(identification_t *key1, identification_t *key2) +{ + return key1->equals(key1, key2); +} + +/** + * Implementation of sim_card_t.get_pseudonym + */ +static identification_t *get_pseudonym(private_eap_simaka_pseudonym_card_t *this, + identification_t *id) +{ + identification_t *pseudonym; + + pseudonym = this->pseudonym->get(this->pseudonym, id); + if (pseudonym) + { + return pseudonym->clone(pseudonym); + } + return NULL; +} + +/** + * Implementation of sim_card_t.set_pseudonym + */ +static void set_pseudonym(private_eap_simaka_pseudonym_card_t *this, + identification_t *id, identification_t *pseudonym) +{ + identification_t *permanent; + + /* create new entries */ + id = id->clone(id); + pseudonym = pseudonym->clone(pseudonym); + permanent = this->permanent->put(this->permanent, pseudonym, id); + pseudonym = this->pseudonym->put(this->pseudonym, id, pseudonym); + + /* delete old entries */ + DESTROY_IF(permanent); + DESTROY_IF(pseudonym); +} + +/** + * Implementation of sim_card_t.get_quintuplet + */ +static status_t get_quintuplet() +{ + return NOT_SUPPORTED; +} + +/** + * Implementation of eap_simaka_pseudonym_card_t.destroy. + */ +static void destroy(private_eap_simaka_pseudonym_card_t *this) +{ + enumerator_t *enumerator; + identification_t *id; + void *key; + + enumerator = this->pseudonym->create_enumerator(this->pseudonym); + while (enumerator->enumerate(enumerator, &key, &id)) + { + id->destroy(id); + } + enumerator->destroy(enumerator); + + enumerator = this->permanent->create_enumerator(this->permanent); + while (enumerator->enumerate(enumerator, &key, &id)) + { + id->destroy(id); + } + enumerator->destroy(enumerator); + + this->pseudonym->destroy(this->pseudonym); + this->permanent->destroy(this->permanent); + free(this); +} + +/** + * See header + */ +eap_simaka_pseudonym_card_t *eap_simaka_pseudonym_card_create() +{ + private_eap_simaka_pseudonym_card_t *this; + + this = malloc_thing(private_eap_simaka_pseudonym_card_t); + + this->public.card.get_triplet = (bool(*)(sim_card_t*, identification_t *id, char rand[SIM_RAND_LEN], char sres[SIM_SRES_LEN], char kc[SIM_KC_LEN]))return_false; + this->public.card.get_quintuplet = (status_t(*)(sim_card_t*, identification_t *id, char rand[AKA_RAND_LEN], char autn[AKA_AUTN_LEN], char ck[AKA_CK_LEN], char ik[AKA_IK_LEN], char res[AKA_RES_MAX], int *res_len))get_quintuplet; + this->public.card.resync = (bool(*)(sim_card_t*, identification_t *id, char rand[AKA_RAND_LEN], char auts[AKA_AUTS_LEN]))return_false; + this->public.card.get_pseudonym = (identification_t*(*)(sim_card_t*, identification_t *perm))get_pseudonym; + this->public.card.set_pseudonym = (void(*)(sim_card_t*, identification_t *id, identification_t *pseudonym))set_pseudonym; + this->public.card.get_reauth = (identification_t*(*)(sim_card_t*, identification_t *id, char mk[HASH_SIZE_SHA1], u_int16_t *counter))return_null; + this->public.card.set_reauth = (void(*)(sim_card_t*, identification_t *id, identification_t* next, char mk[HASH_SIZE_SHA1], u_int16_t counter))nop; + this->public.destroy = (void(*)(eap_simaka_pseudonym_card_t*))destroy; + + this->pseudonym = hashtable_create((void*)hash, (void*)equals, 0); + this->permanent = hashtable_create((void*)hash, (void*)equals, 0); + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_card.h b/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_card.h new file mode 100644 index 000000000..1b5940fdc --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_card.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_simaka_pseudonym_card eap_simaka_pseudonym_card + * @{ @ingroup eap_simaka_pseudonym + */ + +#ifndef EAP_SIMAKA_PSEUDONYM_CARD_H_ +#define EAP_SIMAKA_PSEUDONYM_CARD_H_ + +#include <sa/authenticators/eap/sim_manager.h> + +typedef struct eap_simaka_pseudonym_card_t eap_simaka_pseudonym_card_t; + +/** + * SIM card implementing volatile in-memory pseudonym storage. + */ +struct eap_simaka_pseudonym_card_t { + + /** + * Implements sim_card_t interface + */ + sim_card_t card; + + /** + * Destroy a eap_simaka_pseudonym_card_t. + */ + void (*destroy)(eap_simaka_pseudonym_card_t *this); +}; + +/** + * Create a eap_simaka_pseudonym_card instance. + */ +eap_simaka_pseudonym_card_t *eap_simaka_pseudonym_card_create(); + +#endif /** EAP_SIMAKA_PSEUDONYM_CARD_H_ @}*/ diff --git a/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_plugin.c b/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_plugin.c new file mode 100644 index 000000000..81b9d7b00 --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_plugin.c @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_simaka_pseudonym_plugin.h" +#include "eap_simaka_pseudonym_card.h" +#include "eap_simaka_pseudonym_provider.h" + +#include <daemon.h> + +typedef struct private_eap_simaka_pseudonym_t private_eap_simaka_pseudonym_t; + +/** + * Private data of an eap_simaka_pseudonym_t object. + */ +struct private_eap_simaka_pseudonym_t { + + /** + * Public eap_simaka_pseudonym_plugin_t interface. + */ + eap_simaka_pseudonym_plugin_t public; + + /** + * SIM card + */ + eap_simaka_pseudonym_card_t *card; + + /** + * SIM provider + */ + eap_simaka_pseudonym_provider_t *provider; +}; + +/** + * Implementation of eap_simaka_pseudonym_t.destroy. + */ +static void destroy(private_eap_simaka_pseudonym_t *this) +{ + charon->sim->remove_card(charon->sim, &this->card->card); + charon->sim->remove_provider(charon->sim, &this->provider->provider); + this->card->destroy(this->card); + this->provider->destroy(this->provider); + free(this); +} + +/** + * See header + */ +plugin_t *eap_simaka_pseudonym_plugin_create() +{ + private_eap_simaka_pseudonym_t *this; + + this = malloc_thing(private_eap_simaka_pseudonym_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + this->provider = eap_simaka_pseudonym_provider_create(); + if (!this->provider) + { + free(this); + return NULL; + } + this->card = eap_simaka_pseudonym_card_create(); + + charon->sim->add_card(charon->sim, &this->card->card); + charon->sim->add_provider(charon->sim, &this->provider->provider); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_plugin.h b/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_plugin.h new file mode 100644 index 000000000..1992b2482 --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_simaka_pseudonym eap_simaka_pseudonym + * @ingroup cplugins + * + * @defgroup eap_simaka_pseudonym_plugin eap_simaka_pseudonym_plugin + * @{ @ingroup eap_simaka_pseudonym + */ + +#ifndef EAP_SIMAKA_PSEUDONYM_PLUGIN_H_ +#define EAP_SIMAKA_PSEUDONYM_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct eap_simaka_pseudonym_plugin_t eap_simaka_pseudonym_plugin_t; + +/** + * Plugin to provide in-memory storage of EAP-SIM/AKA pseudonyms. + */ +struct eap_simaka_pseudonym_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** EAP_SIMAKA_PSEUDONYM_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_provider.c b/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_provider.c new file mode 100644 index 000000000..0613b8807 --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_provider.c @@ -0,0 +1,182 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_simaka_pseudonym_provider.h" + +#include <utils/hashtable.h> + +typedef struct private_eap_simaka_pseudonym_provider_t private_eap_simaka_pseudonym_provider_t; + +/** + * Private data of an eap_simaka_pseudonym_provider_t object. + */ +struct private_eap_simaka_pseudonym_provider_t { + + /** + * Public eap_simaka_pseudonym_provider_t interface. + */ + eap_simaka_pseudonym_provider_t public; + + /** + * Permanent -> pseudonym mappings + */ + hashtable_t *pseudonym; + + /** + * Reverse pseudonym -> permanent mappings + */ + hashtable_t *permanent; + + /** + * RNG for pseudonyms/reauth identities + */ + rng_t *rng; +}; + +/** + * hashtable hash function + */ +static u_int hash(identification_t *key) +{ + return chunk_hash(key->get_encoding(key)); +} + +/** + * hashtable equals function + */ +static bool equals(identification_t *key1, identification_t *key2) +{ + return key1->equals(key1, key2); +} + +/** + * Implementation of sim_provider_t.is_pseudonym + */ +static identification_t* is_pseudonym( + private_eap_simaka_pseudonym_provider_t *this, identification_t *id) +{ + identification_t *permanent; + + permanent = this->permanent->get(this->permanent, id); + if (permanent) + { + return permanent->clone(permanent); + } + return NULL; +} + +/** + * Generate a random identity + */ +static identification_t *gen_identity( + private_eap_simaka_pseudonym_provider_t *this) +{ + char buf[8], hex[sizeof(buf) * 2 + 1]; + + this->rng->get_bytes(this->rng, sizeof(buf), buf); + chunk_to_hex(chunk_create(buf, sizeof(buf)), hex, FALSE); + + return identification_create_from_string(hex); +} + +/** + * Implementation of sim_provider_t.get_pseudonym + */ +static identification_t* gen_pseudonym( + private_eap_simaka_pseudonym_provider_t *this, identification_t *id) +{ + identification_t *pseudonym, *permanent; + + /* remove old entry */ + pseudonym = this->pseudonym->remove(this->pseudonym, id); + if (pseudonym) + { + permanent = this->permanent->remove(this->permanent, pseudonym); + if (permanent) + { + permanent->destroy(permanent); + } + pseudonym->destroy(pseudonym); + } + + pseudonym = gen_identity(this); + + /* create new entries */ + id = id->clone(id); + this->pseudonym->put(this->pseudonym, id, pseudonym); + this->permanent->put(this->permanent, pseudonym, id); + + return pseudonym->clone(pseudonym); +} + +/** + * Implementation of eap_simaka_pseudonym_provider_t.destroy. + */ +static void destroy(private_eap_simaka_pseudonym_provider_t *this) +{ + enumerator_t *enumerator; + identification_t *id; + void *key; + + enumerator = this->pseudonym->create_enumerator(this->pseudonym); + while (enumerator->enumerate(enumerator, &key, &id)) + { + id->destroy(id); + } + enumerator->destroy(enumerator); + + enumerator = this->permanent->create_enumerator(this->permanent); + while (enumerator->enumerate(enumerator, &key, &id)) + { + id->destroy(id); + } + enumerator->destroy(enumerator); + + this->pseudonym->destroy(this->pseudonym); + this->permanent->destroy(this->permanent); + this->rng->destroy(this->rng); + free(this); +} + +/** + * See header + */ +eap_simaka_pseudonym_provider_t *eap_simaka_pseudonym_provider_create() +{ + private_eap_simaka_pseudonym_provider_t *this; + + this = malloc_thing(private_eap_simaka_pseudonym_provider_t); + + this->public.provider.get_triplet = (bool(*)(sim_provider_t*, identification_t *id, char rand[SIM_RAND_LEN], char sres[SIM_SRES_LEN], char kc[SIM_KC_LEN]))return_false; + this->public.provider.get_quintuplet = (bool(*)(sim_provider_t*, identification_t *id, char rand[AKA_RAND_LEN], char xres[AKA_RES_MAX], int *xres_len, char ck[AKA_CK_LEN], char ik[AKA_IK_LEN], char autn[AKA_AUTN_LEN]))return_false; + this->public.provider.resync = (bool(*)(sim_provider_t*, identification_t *id, char rand[AKA_RAND_LEN], char auts[AKA_AUTS_LEN]))return_false; + this->public.provider.is_pseudonym = (identification_t*(*)(sim_provider_t*, identification_t *id))is_pseudonym; + this->public.provider.gen_pseudonym = (identification_t*(*)(sim_provider_t*, identification_t *id))gen_pseudonym; + this->public.provider.is_reauth = (identification_t*(*)(sim_provider_t*, identification_t *id, char [HASH_SIZE_SHA1], u_int16_t *counter))return_null; + this->public.provider.gen_reauth = (identification_t*(*)(sim_provider_t*, identification_t *id, char mk[HASH_SIZE_SHA1]))return_null; + this->public.destroy = (void(*)(eap_simaka_pseudonym_provider_t*))destroy; + + this->rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK); + if (!this->rng) + { + free(this); + return NULL; + } + this->pseudonym = hashtable_create((void*)hash, (void*)equals, 0); + this->permanent = hashtable_create((void*)hash, (void*)equals, 0); + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_provider.h b/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_provider.h new file mode 100644 index 000000000..5d8e6d221 --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_pseudonym/eap_simaka_pseudonym_provider.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_simaka_pseudonym_provider eap_simaka_pseudonym_provider + * @{ @ingroup eap_simaka_pseudonym + */ + +#ifndef EAP_SIMAKA_PSEDUONYM_PROVIDER_H_ +#define EAP_SIMAKA_PSEDUONYM_PROVIDER_H_ + +#include <sa/authenticators/eap/sim_manager.h> + +typedef struct eap_simaka_pseudonym_provider_t eap_simaka_pseudonym_provider_t; + +/** + * SIM provider implementing volatile in-memory pseudonym storage. + */ +struct eap_simaka_pseudonym_provider_t { + + /** + * Implements sim_provider_t interface. + */ + sim_provider_t provider; + + /** + * Destroy a eap_simaka_pseudonym_provider_t. + */ + void (*destroy)(eap_simaka_pseudonym_provider_t *this); +}; + +/** + * Create a eap_simaka_pseudonym_provider instance. + */ +eap_simaka_pseudonym_provider_t *eap_simaka_pseudonym_provider_create(); + +#endif /** EAP_SIMAKA_PSEDUONYM_PROVIDER_H_ @}*/ diff --git a/src/libcharon/plugins/eap_simaka_reauth/Makefile.am b/src/libcharon/plugins/eap_simaka_reauth/Makefile.am new file mode 100644 index 000000000..fbcd544d3 --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_reauth/Makefile.am @@ -0,0 +1,18 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-eap-simaka-reauth.la +else +plugin_LTLIBRARIES = libstrongswan-eap-simaka-reauth.la +endif + +libstrongswan_eap_simaka_reauth_la_SOURCES = \ + eap_simaka_reauth_plugin.h eap_simaka_reauth_plugin.c \ + eap_simaka_reauth_card.h eap_simaka_reauth_card.c \ + eap_simaka_reauth_provider.h eap_simaka_reauth_provider.c + +libstrongswan_eap_simaka_reauth_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/eap_simaka_reauth/Makefile.in b/src/libcharon/plugins/eap_simaka_reauth/Makefile.in new file mode 100644 index 000000000..35d8e7c3b --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_reauth/Makefile.in @@ -0,0 +1,593 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = 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file mode 100644 index 000000000..14d0416d9 --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_card.c @@ -0,0 +1,170 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_simaka_reauth_card.h" + +#include <daemon.h> +#include <utils/hashtable.h> + +typedef struct private_eap_simaka_reauth_card_t private_eap_simaka_reauth_card_t; + +/** + * Private data of an eap_simaka_reauth_card_t object. + */ +struct private_eap_simaka_reauth_card_t { + + /** + * Public eap_simaka_reauth_card_t interface. + */ + eap_simaka_reauth_card_t public; + + /** + * Permanent -> reauth_data_t mappings + */ + hashtable_t *reauth; +}; + +/** + * Data associated to a reauthentication identity + */ +typedef struct { + /** currently used reauthentication identity */ + identification_t *id; + /** associated permanent identity */ + identification_t *permanent; + /** counter value */ + u_int16_t counter; + /** master key */ + char mk[HASH_SIZE_SHA1]; +} reauth_data_t; + +/** + * hashtable hash function + */ +static u_int hash(identification_t *key) +{ + return chunk_hash(key->get_encoding(key)); +} + +/** + * hashtable equals function + */ +static bool equals(identification_t *key1, identification_t *key2) +{ + return key1->equals(key1, key2); +} + +/** + * Implementation of sim_card_t.get_reauth + */ +static identification_t *get_reauth(private_eap_simaka_reauth_card_t *this, + identification_t *id, char mk[HASH_SIZE_SHA1], + u_int16_t *counter) +{ + reauth_data_t *data; + identification_t *reauth; + + /* look up reauthentication data */ + data = this->reauth->remove(this->reauth, id); + if (!data) + { + return NULL; + } + *counter = ++data->counter; + memcpy(mk, data->mk, HASH_SIZE_SHA1); + reauth = data->id; + data->permanent->destroy(data->permanent); + free(data); + return reauth; +} + +/** + * Implementation of sim_card_t.set_reauth + */ +static void set_reauth(private_eap_simaka_reauth_card_t *this, + identification_t *id, identification_t* next, + char mk[HASH_SIZE_SHA1], u_int16_t counter) +{ + reauth_data_t *data; + + data = this->reauth->get(this->reauth, id); + if (data) + { + data->id->destroy(data->id); + } + else + { + data = malloc_thing(reauth_data_t); + data->permanent = id->clone(id); + this->reauth->put(this->reauth, data->permanent, data); + } + data->counter = counter; + data->id = next->clone(next); + memcpy(data->mk, mk, HASH_SIZE_SHA1); +} + +/** + * Implementation of sim_card_t.get_quintuplet + */ +static status_t get_quintuplet() +{ + return NOT_SUPPORTED; +} + +/** + * Implementation of eap_simaka_reauth_card_t.destroy. + */ +static void destroy(private_eap_simaka_reauth_card_t *this) +{ + enumerator_t *enumerator; + reauth_data_t *data; + void *key; + + enumerator = this->reauth->create_enumerator(this->reauth); + while (enumerator->enumerate(enumerator, &key, &data)) + { + data->id->destroy(data->id); + data->permanent->destroy(data->permanent); + free(data); + } + enumerator->destroy(enumerator); + + this->reauth->destroy(this->reauth); + free(this); +} + +/** + * See header + */ +eap_simaka_reauth_card_t *eap_simaka_reauth_card_create() +{ + private_eap_simaka_reauth_card_t *this; + + this = malloc_thing(private_eap_simaka_reauth_card_t); + + this->public.card.get_triplet = (bool(*)(sim_card_t*, identification_t *id, char rand[SIM_RAND_LEN], char sres[SIM_SRES_LEN], char kc[SIM_KC_LEN]))return_null; + this->public.card.get_quintuplet = (status_t(*)(sim_card_t*, identification_t *id, char rand[AKA_RAND_LEN], char autn[AKA_AUTN_LEN], char ck[AKA_CK_LEN], char ik[AKA_IK_LEN], char res[AKA_RES_MAX], int *res_len))get_quintuplet; + this->public.card.resync = (bool(*)(sim_card_t*, identification_t *id, char rand[AKA_RAND_LEN], char auts[AKA_AUTS_LEN]))return_false; + this->public.card.get_pseudonym = (identification_t*(*)(sim_card_t*, identification_t *perm))return_null; + this->public.card.set_pseudonym = (void(*)(sim_card_t*, identification_t *id, identification_t *pseudonym))nop; + this->public.card.get_reauth = (identification_t*(*)(sim_card_t*, identification_t *id, char mk[HASH_SIZE_SHA1], u_int16_t *counter))get_reauth; + this->public.card.set_reauth = (void(*)(sim_card_t*, identification_t *id, identification_t* next, char mk[HASH_SIZE_SHA1], u_int16_t counter))set_reauth; + this->public.destroy = (void(*)(eap_simaka_reauth_card_t*))destroy; + + this->reauth = hashtable_create((void*)hash, (void*)equals, 0); + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_card.h b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_card.h new file mode 100644 index 000000000..f24dc8a15 --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_card.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_simaka_reauth_card eap_simaka_reauth_card + * @{ @ingroup eap_simaka_reauth + */ + +#ifndef EAP_SIMAKA_REAUTH_CARD_H_ +#define EAP_SIMAKA_REAUTH_CARD_H_ + +#include <sa/authenticators/eap/sim_manager.h> + +typedef struct eap_simaka_reauth_card_t eap_simaka_reauth_card_t; + +/** + * SIM card implementing volatile in-memory reauthentication data storage. + */ +struct eap_simaka_reauth_card_t { + + /** + * Implements sim_card_t interface + */ + sim_card_t card; + + /** + * Destroy a eap_simaka_reauth_card_t. + */ + void (*destroy)(eap_simaka_reauth_card_t *this); +}; + +/** + * Create a eap_simaka_reauth_card instance. + */ +eap_simaka_reauth_card_t *eap_simaka_reauth_card_create(); + +#endif /** EAP_SIMAKA_REAUTH_CARD_H_ @}*/ diff --git a/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.c b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.c new file mode 100644 index 000000000..987a0e109 --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.c @@ -0,0 +1,79 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_simaka_reauth_plugin.h" +#include "eap_simaka_reauth_card.h" +#include "eap_simaka_reauth_provider.h" + +#include <daemon.h> + +typedef struct private_eap_simaka_reauth_t private_eap_simaka_reauth_t; + +/** + * Private data of an eap_simaka_reauth_t object. + */ +struct private_eap_simaka_reauth_t { + + /** + * Public eap_simaka_reauth_plugin_t interface. + */ + eap_simaka_reauth_plugin_t public; + + /** + * SIM card + */ + eap_simaka_reauth_card_t *card; + + /** + * SIM provider + */ + eap_simaka_reauth_provider_t *provider; +}; + +/** + * Implementation of eap_simaka_reauth_t.destroy. + */ +static void destroy(private_eap_simaka_reauth_t *this) +{ + charon->sim->remove_card(charon->sim, &this->card->card); + charon->sim->remove_provider(charon->sim, &this->provider->provider); + this->card->destroy(this->card); + this->provider->destroy(this->provider); + free(this); +} + +/** + * See header + */ +plugin_t *eap_simaka_reauth_plugin_create() +{ + private_eap_simaka_reauth_t *this = malloc_thing(private_eap_simaka_reauth_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + this->provider = eap_simaka_reauth_provider_create(); + if (!this->provider) + { + free(this); + return NULL; + } + this->card = eap_simaka_reauth_card_create(); + + charon->sim->add_card(charon->sim, &this->card->card); + charon->sim->add_provider(charon->sim, &this->provider->provider); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.h b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.h new file mode 100644 index 000000000..80c8a1037 --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_simaka_reauth eap_simaka_reauth + * @ingroup cplugins + * + * @defgroup eap_simaka_reauth_plugin eap_simaka_reauth_plugin + * @{ @ingroup eap_simaka_reauth + */ + +#ifndef EAP_SIMAKA_REAUTH_PLUGIN_H_ +#define EAP_SIMAKA_REAUTH_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct eap_simaka_reauth_plugin_t eap_simaka_reauth_plugin_t; + +/** + * Plugin to provide in-memory EAP-SIM/AKA reauthentication data storage. + */ +struct eap_simaka_reauth_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** EAP_SIMAKA_REAUTH_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_provider.c b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_provider.c new file mode 100644 index 000000000..f962b2d84 --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_provider.c @@ -0,0 +1,209 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "eap_simaka_reauth_provider.h" + +#include <daemon.h> +#include <utils/hashtable.h> + +typedef struct private_eap_simaka_reauth_provider_t private_eap_simaka_reauth_provider_t; + +/** + * Private data of an eap_simaka_reauth_provider_t object. + */ +struct private_eap_simaka_reauth_provider_t { + + /** + * Public eap_simaka_reauth_provider_t interface. + */ + eap_simaka_reauth_provider_t public; + + /** + * Permanent -> reauth_data_t mappings + */ + hashtable_t *reauth; + + /** + * Reverse reauth -> permanent mappings + */ + hashtable_t *permanent; + + /** + * RNG for pseudonyms/reauth identities + */ + rng_t *rng; +}; + +/** + * Data associated to a reauthentication identity + */ +typedef struct { + /** currently used reauthentication identity */ + identification_t *id; + /** counter value */ + u_int16_t counter; + /** master key */ + char mk[HASH_SIZE_SHA1]; +} reauth_data_t; + +/** + * hashtable hash function + */ +static u_int hash(identification_t *key) +{ + return chunk_hash(key->get_encoding(key)); +} + +/** + * hashtable equals function + */ +static bool equals(identification_t *key1, identification_t *key2) +{ + return key1->equals(key1, key2); +} + +/** + * Generate a random identity + */ +static identification_t *gen_identity(private_eap_simaka_reauth_provider_t *this) +{ + char buf[8], hex[sizeof(buf) * 2 + 1]; + + this->rng->get_bytes(this->rng, sizeof(buf), buf); + chunk_to_hex(chunk_create(buf, sizeof(buf)), hex, FALSE); + + return identification_create_from_string(hex); +} + +/** + * Implementation of sim_provider_t.is_reauth + */ +static identification_t *is_reauth(private_eap_simaka_reauth_provider_t *this, + identification_t *id, char mk[HASH_SIZE_SHA1], + u_int16_t *counter) +{ + identification_t *permanent; + reauth_data_t *data; + + /* look up permanent identity */ + permanent = this->permanent->get(this->permanent, id); + if (!permanent) + { + return NULL; + } + /* look up reauthentication data */ + data = this->reauth->get(this->reauth, permanent); + if (!data) + { + return NULL; + } + *counter = ++data->counter; + memcpy(mk, data->mk, HASH_SIZE_SHA1); + return permanent->clone(permanent); +} + +/** + * Implementation of sim_provider_t.gen_reauth + */ +static identification_t *gen_reauth(private_eap_simaka_reauth_provider_t *this, + identification_t *id, char mk[HASH_SIZE_SHA1]) +{ + reauth_data_t *data; + identification_t *permanent; + + data = this->reauth->get(this->reauth, id); + if (data) + { /* update existing entry */ + permanent = this->permanent->remove(this->permanent, data->id); + if (permanent) + { + data->id->destroy(data->id); + data->id = gen_identity(this); + this->permanent->put(this->permanent, data->id, permanent); + } + } + else + { /* generate new entry */ + data = malloc_thing(reauth_data_t); + data->counter = 0; + data->id = gen_identity(this); + id = id->clone(id); + this->reauth->put(this->reauth, id, data); + this->permanent->put(this->permanent, data->id, id); + } + memcpy(data->mk, mk, HASH_SIZE_SHA1); + + return data->id->clone(data->id); +} + +/** + * Implementation of eap_simaka_reauth_provider_t.destroy. + */ +static void destroy(private_eap_simaka_reauth_provider_t *this) +{ + enumerator_t *enumerator; + identification_t *id; + reauth_data_t *data; + void *key; + + enumerator = this->permanent->create_enumerator(this->permanent); + while (enumerator->enumerate(enumerator, &key, &id)) + { + id->destroy(id); + } + enumerator->destroy(enumerator); + + enumerator = this->reauth->create_enumerator(this->reauth); + while (enumerator->enumerate(enumerator, &key, &data)) + { + data->id->destroy(data->id); + free(data); + } + enumerator->destroy(enumerator); + + this->permanent->destroy(this->permanent); + this->reauth->destroy(this->reauth); + this->rng->destroy(this->rng); + free(this); +} + +/** + * See header + */ +eap_simaka_reauth_provider_t *eap_simaka_reauth_provider_create() +{ + private_eap_simaka_reauth_provider_t *this = malloc_thing(private_eap_simaka_reauth_provider_t); + + this->public.provider.get_triplet = (bool(*)(sim_provider_t*, identification_t *id, char rand[SIM_RAND_LEN], char sres[SIM_SRES_LEN], char kc[SIM_KC_LEN]))return_false; + this->public.provider.get_quintuplet = (bool(*)(sim_provider_t*, identification_t *id, char rand[AKA_RAND_LEN], char xres[AKA_RES_MAX], int *xres_len, char ck[AKA_CK_LEN], char ik[AKA_IK_LEN], char autn[AKA_AUTN_LEN]))return_false; + this->public.provider.resync = (bool(*)(sim_provider_t*, identification_t *id, char rand[AKA_RAND_LEN], char auts[AKA_AUTS_LEN]))return_false; + this->public.provider.is_pseudonym = (identification_t*(*)(sim_provider_t*, identification_t *id))return_null; + this->public.provider.gen_pseudonym = (identification_t*(*)(sim_provider_t*, identification_t *id))return_null; + this->public.provider.is_reauth = (identification_t*(*)(sim_provider_t*, identification_t *id, char [HASH_SIZE_SHA1], u_int16_t *counter))is_reauth; + this->public.provider.gen_reauth = (identification_t*(*)(sim_provider_t*, identification_t *id, char mk[HASH_SIZE_SHA1]))gen_reauth; + this->public.destroy = (void(*)(eap_simaka_reauth_provider_t*))destroy; + + this->rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK); + if (!this->rng) + { + free(this); + return NULL; + } + this->permanent = hashtable_create((void*)hash, (void*)equals, 0); + this->reauth = hashtable_create((void*)hash, (void*)equals, 0); + + return &this->public; +} + diff --git a/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_provider.h b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_provider.h new file mode 100644 index 000000000..7ae151a27 --- /dev/null +++ b/src/libcharon/plugins/eap_simaka_reauth/eap_simaka_reauth_provider.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup eap_simaka_reauth_provider eap_simaka_reauth_provider + * @{ @ingroup eap_simaka_reauth + */ + +#ifndef EAP_SIMAKA_REAUTH_PROVIDER_H_ +#define EAP_SIMAKA_REAUTH_PROVIDER_H_ + +#include <sa/authenticators/eap/sim_manager.h> + +typedef struct eap_simaka_reauth_provider_t eap_simaka_reauth_provider_t; + +/** + * SIM provider implementing volatile in-memory reauthentication data storage. + */ +struct eap_simaka_reauth_provider_t { + + /** + * Implements sim_provider_t interface. + */ + sim_provider_t provider; + + /** + * Destroy a eap_simaka_reauth_provider_t. + */ + void (*destroy)(eap_simaka_reauth_provider_t *this); +}; + +/** + * Create a eap_simaka_reauth_provider instance. + */ +eap_simaka_reauth_provider_t *eap_simaka_reauth_provider_create(); + +#endif /** EAP_SIMAKA_REAUTH_PROVIDER_H_ @}*/ diff --git a/src/libcharon/plugins/farp/Makefile.am b/src/libcharon/plugins/farp/Makefile.am new file mode 100644 index 000000000..42cd31879 --- /dev/null +++ b/src/libcharon/plugins/farp/Makefile.am @@ -0,0 +1,16 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-farp.la +else +plugin_LTLIBRARIES = libstrongswan-farp.la +endif + +libstrongswan_farp_la_SOURCES = farp_plugin.h farp_plugin.c \ + farp_listener.h farp_listener.c farp_spoofer.h farp_spoofer.c + +libstrongswan_farp_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/farp/Makefile.in b/src/libcharon/plugins/farp/Makefile.in new file mode 100644 index 000000000..20ac77080 --- /dev/null +++ b/src/libcharon/plugins/farp/Makefile.in @@ -0,0 +1,587 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = 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--git a/src/libcharon/plugins/farp/farp_listener.c b/src/libcharon/plugins/farp/farp_listener.c new file mode 100644 index 000000000..8eed49778 --- /dev/null +++ b/src/libcharon/plugins/farp/farp_listener.c @@ -0,0 +1,154 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "farp_listener.h" + +#include <utils/hashtable.h> +#include <threading/rwlock.h> + +typedef struct private_farp_listener_t private_farp_listener_t; + +/** + * Private data of an farp_listener_t object. + */ +struct private_farp_listener_t { + + /** + * Public farp_listener_t interface. + */ + farp_listener_t public; + + /** + * Hashtable with active virtual IPs + */ + hashtable_t *ips; + + /** + * RWlock for IP list + */ + rwlock_t *lock; +}; + +/** + * Hashtable hash function + */ +static u_int hash(host_t *key) +{ + return chunk_hash(key->get_address(key)); +} + +/** + * Hashtable equals function + */ +static bool equals(host_t *a, host_t *b) +{ + return a->ip_equals(a, b); +} + +METHOD(listener_t, ike_updown, bool, + private_farp_listener_t *this, ike_sa_t *ike_sa, bool up) +{ + if (!up) + { + host_t *ip; + + ip = ike_sa->get_virtual_ip(ike_sa, FALSE); + if (ip) + { + this->lock->write_lock(this->lock); + ip = this->ips->remove(this->ips, ip); + this->lock->unlock(this->lock); + DESTROY_IF(ip); + } + } + return TRUE; +} + +METHOD(listener_t, message_hook, bool, + private_farp_listener_t *this, ike_sa_t *ike_sa, + message_t *message, bool incoming) +{ + if (ike_sa->get_state(ike_sa) == IKE_ESTABLISHED && + message->get_exchange_type(message) == IKE_AUTH && + !message->get_request(message)) + { + host_t *ip; + + ip = ike_sa->get_virtual_ip(ike_sa, FALSE); + if (ip) + { + ip = ip->clone(ip); + this->lock->write_lock(this->lock); + ip = this->ips->put(this->ips, ip, ip); + this->lock->unlock(this->lock); + DESTROY_IF(ip); + } + } + return TRUE; +} + +METHOD(farp_listener_t, is_active, bool, + private_farp_listener_t *this, host_t *ip) +{ + bool active; + + this->lock->read_lock(this->lock); + active = this->ips->get(this->ips, ip) != NULL; + this->lock->unlock(this->lock); + return active; +} + +METHOD(farp_listener_t, destroy, void, + private_farp_listener_t *this) +{ + enumerator_t *enumerator; + host_t *key, *value; + + enumerator = this->ips->create_enumerator(this->ips); + while (enumerator->enumerate(enumerator, &key, &value)) + { + value->destroy(value); + } + enumerator->destroy(enumerator); + this->ips->destroy(this->ips); + + this->lock->destroy(this->lock); + free(this); +} + +/** + * See header + */ +farp_listener_t *farp_listener_create() +{ + private_farp_listener_t *this; + + INIT(this, + .public = { + .listener = { + .ike_updown = _ike_updown, + .message = _message_hook, + }, + .is_active = _is_active, + .destroy = _destroy, + }, + .ips = hashtable_create((hashtable_hash_t)hash, + (hashtable_equals_t)equals, 8), + .lock = rwlock_create(RWLOCK_TYPE_DEFAULT), + ); + + return &this->public; +} + diff --git a/src/libcharon/plugins/farp/farp_listener.h b/src/libcharon/plugins/farp/farp_listener.h new file mode 100644 index 000000000..bd96d7a1c --- /dev/null +++ b/src/libcharon/plugins/farp/farp_listener.h @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup farp_listener farp_listener + * @{ @ingroup farp + */ + +#ifndef FARP_LISTENER_H_ +#define FARP_LISTENER_H_ + +#include <utils/host.h> +#include <bus/listeners/listener.h> + +typedef struct farp_listener_t farp_listener_t; + +/** + * Listener to register the set of IPs we spoof ARP responses for. + */ +struct farp_listener_t { + + /** + * Implements listener_t interface. + */ + listener_t listener; + + /** + * Check if a given IP is currently used as virtual IP by a peer. + * + * @param ip IP to check + * @return TRUE if IP is an active virtual IP + */ + bool (*is_active)(farp_listener_t *this, host_t *ip); + + /** + * Destroy a farp_listener_t. + */ + void (*destroy)(farp_listener_t *this); +}; + +/** + * Create a farp_listener instance. + */ +farp_listener_t *farp_listener_create(); + +#endif /** FARP_LISTENER_H_ @}*/ diff --git a/src/libcharon/plugins/farp/farp_plugin.c b/src/libcharon/plugins/farp/farp_plugin.c new file mode 100644 index 000000000..01c2a39c8 --- /dev/null +++ b/src/libcharon/plugins/farp/farp_plugin.c @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "farp_plugin.h" + +#include "farp_listener.h" +#include "farp_spoofer.h" + +#include <daemon.h> + +typedef struct private_farp_plugin_t private_farp_plugin_t; + +/** + * private data of farp plugin + */ +struct private_farp_plugin_t { + + /** + * implements plugin interface + */ + farp_plugin_t public; + + /** + * Listener registering active virtual IPs + */ + farp_listener_t *listener; + + /** + * Spoofer listening and spoofing ARP messages + */ + farp_spoofer_t *spoofer; +}; + +METHOD(plugin_t, destroy, void, + private_farp_plugin_t *this) +{ + DESTROY_IF(this->spoofer); + charon->bus->remove_listener(charon->bus, &this->listener->listener); + this->listener->destroy(this->listener); + free(this); +} + +/** + * Plugin constructor + */ +plugin_t *farp_plugin_create() +{ + private_farp_plugin_t *this; + + INIT(this, + .public.plugin.destroy = _destroy, + .listener = farp_listener_create(), + ); + + charon->bus->add_listener(charon->bus, &this->listener->listener); + + this->spoofer = farp_spoofer_create(this->listener); + if (!this->spoofer) + { + destroy(this); + return NULL; + } + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/farp/farp_plugin.h b/src/libcharon/plugins/farp/farp_plugin.h new file mode 100644 index 000000000..0246fcc2a --- /dev/null +++ b/src/libcharon/plugins/farp/farp_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup farp farp + * @ingroup cplugins + * + * @defgroup farp_plugin farp_plugin + * @{ @ingroup farp + */ + +#ifndef FARP_PLUGIN_H_ +#define FARP_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct farp_plugin_t farp_plugin_t; + +/** + * ARP faking plugin that responds to ARP requests to peers virtual IP. + */ +struct farp_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** FARP_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/farp/farp_spoofer.c b/src/libcharon/plugins/farp/farp_spoofer.c new file mode 100644 index 000000000..29e64e32d --- /dev/null +++ b/src/libcharon/plugins/farp/farp_spoofer.c @@ -0,0 +1,198 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "farp_spoofer.h" + +#include <errno.h> +#include <unistd.h> +#include <sys/socket.h> +#include <linux/if_arp.h> +#include <linux/if_ether.h> +#include <linux/filter.h> +#include <sys/ioctl.h> + +#include <daemon.h> +#include <threading/thread.h> +#include <processing/jobs/callback_job.h> + +typedef struct private_farp_spoofer_t private_farp_spoofer_t; + +/** + * Private data of an farp_spoofer_t object. + */ +struct private_farp_spoofer_t { + + /** + * Public farp_spoofer_t interface. + */ + farp_spoofer_t public; + + /** + * Listener that knows active addresses + */ + farp_listener_t *listener; + + /** + * Callback job to read ARP requests + */ + callback_job_t *job; + + /** + * RAW socket for ARP requests + */ + int skt; +}; + +/** + * IP over Ethernet ARP message + */ +typedef struct __attribute__((packed)) { + u_int16_t hardware_type; + u_int16_t protocol_type; + u_int8_t hardware_size; + u_int8_t protocol_size; + u_int16_t opcode; + u_int8_t sender_mac[6]; + u_int8_t sender_ip[4]; + u_int8_t target_mac[6]; + u_int8_t target_ip[4]; +} arp_t; + +/** + * Send faked ARP response + */ +static void send_arp(private_farp_spoofer_t *this, + arp_t *arp, struct sockaddr_ll *addr) +{ + struct ifreq req; + char tmp[4]; + + req.ifr_ifindex = addr->sll_ifindex; + if (ioctl(this->skt, SIOCGIFNAME, &req) == 0 && + ioctl(this->skt, SIOCGIFHWADDR, &req) == 0 && + req.ifr_hwaddr.sa_family == ARPHRD_ETHER) + { + memcpy(arp->target_mac, arp->sender_mac, 6); + memcpy(arp->sender_mac, req.ifr_hwaddr.sa_data, 6); + + memcpy(tmp, arp->sender_ip, 4); + memcpy(arp->sender_ip, arp->target_ip, 4); + memcpy(arp->target_ip, tmp, 4); + + arp->opcode = htons(ARPOP_REPLY); + + sendto(this->skt, arp, sizeof(*arp), 0, + (struct sockaddr*)addr, sizeof(*addr)); + } +} + +/** + * ARP request receiving + */ +static job_requeue_t receive_arp(private_farp_spoofer_t *this) +{ + struct sockaddr_ll addr; + socklen_t addr_len = sizeof(addr); + arp_t arp; + int oldstate; + ssize_t len; + host_t *ip; + + oldstate = thread_cancelability(TRUE); + len = recvfrom(this->skt, &arp, sizeof(arp), 0, + (struct sockaddr*)&addr, &addr_len); + thread_cancelability(oldstate); + + if (len == sizeof(arp)) + { + ip = host_create_from_chunk(AF_INET, + chunk_create((char*)&arp.target_ip, 4), 0); + if (ip) + { + if (this->listener->is_active(this->listener, ip)) + { + send_arp(this, &arp, &addr); + } + ip->destroy(ip); + } + } + + return JOB_REQUEUE_DIRECT; +} + +METHOD(farp_spoofer_t, destroy, void, + private_farp_spoofer_t *this) +{ + this->job->cancel(this->job); + close(this->skt); + free(this); +} + +/** + * See header + */ +farp_spoofer_t *farp_spoofer_create(farp_listener_t *listener) +{ + private_farp_spoofer_t *this; + struct sock_filter arp_request_filter_code[] = { + BPF_STMT(BPF_LD+BPF_H+BPF_ABS, offsetof(arp_t, protocol_type)), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETH_P_IP, 0, 9), + BPF_STMT(BPF_LD+BPF_B+BPF_ABS, offsetof(arp_t, hardware_size)), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 6, 0, 7), + BPF_STMT(BPF_LD+BPF_B+BPF_ABS, offsetof(arp_t, protocol_size)), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 4, 0, 4), + BPF_STMT(BPF_LD+BPF_H+BPF_ABS, offsetof(arp_t, opcode)), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ARPOP_REQUEST, 0, 3), + BPF_STMT(BPF_LD+BPF_W+BPF_LEN, 0), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 28, 0, 1), + BPF_STMT(BPF_RET+BPF_A, 0), + BPF_STMT(BPF_RET+BPF_K, 0), + }; + struct sock_fprog arp_request_filter = { + sizeof(arp_request_filter_code) / sizeof(struct sock_filter), + arp_request_filter_code, + }; + + INIT(this, + .public = { + .destroy = _destroy, + }, + .listener = listener, + ); + + this->skt = socket(AF_PACKET, SOCK_DGRAM, htons(ETH_P_ARP)); + if (this->skt == -1) + { + DBG1(DBG_NET, "opening ARP packet socket failed: %s", strerror(errno)); + free(this); + return NULL; + } + + if (setsockopt(this->skt, SOL_SOCKET, SO_ATTACH_FILTER, + &arp_request_filter, sizeof(arp_request_filter)) < 0) + { + DBG1(DBG_NET, "installing ARP packet filter failed: %s", strerror(errno)); + close(this->skt); + free(this); + return NULL; + } + + this->job = callback_job_create((callback_job_cb_t)receive_arp, + this, NULL, NULL); + charon->processor->queue_job(charon->processor, (job_t*)this->job); + + return &this->public; +} + diff --git a/src/libcharon/plugins/farp/farp_spoofer.h b/src/libcharon/plugins/farp/farp_spoofer.h new file mode 100644 index 000000000..c91fb3b96 --- /dev/null +++ b/src/libcharon/plugins/farp/farp_spoofer.h @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup farp_spoofer farp_spoofer + * @{ @ingroup farp + */ + +#ifndef FARP_SPOOFER_H_ +#define FARP_SPOOFER_H_ + +#include "farp_listener.h" + +typedef struct farp_spoofer_t farp_spoofer_t; + +/** + * Listen to ARP requests and spoof responses, if required. + */ +struct farp_spoofer_t { + + /** + * Destroy a farp_spoofer_t. + */ + void (*destroy)(farp_spoofer_t *this); +}; + +/** + * Create a farp_spoofer instance. + * + * @param listener listener to check for addresses to spoof + * @return spoofer instance + */ +farp_spoofer_t *farp_spoofer_create(farp_listener_t *listener); + +#endif /** FARP_SPOOFER_H_ @}*/ diff --git a/src/libcharon/plugins/ha/Makefile.am b/src/libcharon/plugins/ha/Makefile.am new file mode 100644 index 000000000..74fe1f4c7 --- /dev/null +++ b/src/libcharon/plugins/ha/Makefile.am @@ -0,0 +1,25 @@ + +INCLUDES = -I${linux_headers} -I$(top_srcdir)/src/libstrongswan \ + -I$(top_srcdir)/src/libhydra -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic -DIPSEC_PIDDIR=\"${piddir}\" + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-ha.la +else +plugin_LTLIBRARIES = libstrongswan-ha.la +endif + +libstrongswan_ha_la_SOURCES = \ + ha_plugin.h ha_plugin.c \ + ha_message.h ha_message.c \ + ha_socket.h ha_socket.c \ + ha_tunnel.h ha_tunnel.c \ + ha_dispatcher.h ha_dispatcher.c \ + ha_segments.h ha_segments.c \ + ha_kernel.h ha_kernel.c \ + ha_ctl.h ha_ctl.c \ + ha_ike.h ha_ike.c \ + ha_child.h ha_child.c +libstrongswan_ha_la_LDFLAGS = -module -avoid-version + diff --git a/src/libcharon/plugins/ha/Makefile.in b/src/libcharon/plugins/ha/Makefile.in new file mode 100644 index 000000000..c60d3bf56 --- /dev/null +++ b/src/libcharon/plugins/ha/Makefile.in @@ -0,0 +1,604 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : 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srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'` +am__nobase_strip = \ + for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||" +am__nobase_list = $(am__nobase_strip_setup); \ + for p in $$list; do echo "$$p $$p"; done | \ + sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \ + $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \ + if (++n[$$2] == $(am__install_max)) \ + { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \ + END { for (dir in files) print dir, files[dir] }' +am__base_list = \ + sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \ + sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g' +am__installdirs = "$(DESTDIR)$(plugindir)" +LTLIBRARIES = $(noinst_LTLIBRARIES) $(plugin_LTLIBRARIES) +libstrongswan_ha_la_LIBADD = +am_libstrongswan_ha_la_OBJECTS = ha_plugin.lo ha_message.lo \ + ha_socket.lo ha_tunnel.lo ha_dispatcher.lo ha_segments.lo \ + ha_kernel.lo ha_ctl.lo ha_ike.lo ha_child.lo +libstrongswan_ha_la_OBJECTS = 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index 000000000..2eb8e27f6 --- /dev/null +++ b/src/libcharon/plugins/ha/ha_child.c @@ -0,0 +1,170 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "ha_child.h" + +typedef struct private_ha_child_t private_ha_child_t; + +/** + * Private data of an ha_child_t object. + */ +struct private_ha_child_t { + + /** + * Public ha_child_t interface. + */ + ha_child_t public; + + /** + * socket we use for syncing + */ + ha_socket_t *socket; + + /** + * tunnel securing sync messages + */ + ha_tunnel_t *tunnel; +}; + +/** + * Implementation of listener_t.child_keys + */ +static bool child_keys(private_ha_child_t *this, ike_sa_t *ike_sa, + child_sa_t *child_sa, diffie_hellman_t *dh, + chunk_t nonce_i, chunk_t nonce_r) +{ + ha_message_t *m; + chunk_t secret; + proposal_t *proposal; + u_int16_t alg, len; + linked_list_t *list; + enumerator_t *enumerator; + traffic_selector_t *ts; + + if (this->tunnel && this->tunnel->is_sa(this->tunnel, ike_sa)) + { /* do not sync SA between nodes */ + return TRUE; + } + + m = ha_message_create(HA_CHILD_ADD); + + m->add_attribute(m, HA_IKE_ID, ike_sa->get_id(ike_sa)); + m->add_attribute(m, HA_INBOUND_SPI, child_sa->get_spi(child_sa, TRUE)); + m->add_attribute(m, HA_OUTBOUND_SPI, child_sa->get_spi(child_sa, FALSE)); + m->add_attribute(m, HA_INBOUND_CPI, child_sa->get_cpi(child_sa, TRUE)); + m->add_attribute(m, HA_OUTBOUND_CPI, child_sa->get_cpi(child_sa, FALSE)); + m->add_attribute(m, HA_IPSEC_MODE, child_sa->get_mode(child_sa)); + m->add_attribute(m, HA_IPCOMP, child_sa->get_ipcomp(child_sa)); + m->add_attribute(m, HA_CONFIG_NAME, child_sa->get_name(child_sa)); + + proposal = child_sa->get_proposal(child_sa); + if (proposal->get_algorithm(proposal, ENCRYPTION_ALGORITHM, &alg, &len)) + { + m->add_attribute(m, HA_ALG_ENCR, alg); + if (len) + { + m->add_attribute(m, HA_ALG_ENCR_LEN, len); + } + } + if (proposal->get_algorithm(proposal, INTEGRITY_ALGORITHM, &alg, NULL)) + { + m->add_attribute(m, HA_ALG_INTEG, alg); + } + m->add_attribute(m, HA_NONCE_I, nonce_i); + m->add_attribute(m, HA_NONCE_R, nonce_r); + if (dh && dh->get_shared_secret(dh, &secret) == SUCCESS) + { + m->add_attribute(m, HA_SECRET, secret); + chunk_clear(&secret); + } + + list = child_sa->get_traffic_selectors(child_sa, TRUE); + enumerator = list->create_enumerator(list); + while (enumerator->enumerate(enumerator, &ts)) + { + m->add_attribute(m, HA_LOCAL_TS, ts); + } + enumerator->destroy(enumerator); + list = child_sa->get_traffic_selectors(child_sa, FALSE); + enumerator = list->create_enumerator(list); + while (enumerator->enumerate(enumerator, &ts)) + { + m->add_attribute(m, HA_REMOTE_TS, ts); + } + enumerator->destroy(enumerator); + + this->socket->push(this->socket, m); + + return TRUE; +} + +/** + * Implementation of listener_t.child_state_change + */ +static bool child_state_change(private_ha_child_t *this, ike_sa_t *ike_sa, + child_sa_t *child_sa, child_sa_state_t state) +{ + if (!ike_sa || + ike_sa->get_state(ike_sa) == IKE_PASSIVE || + ike_sa->get_state(ike_sa) == IKE_DESTROYING) + { /* only sync active IKE_SAs */ + return TRUE; + } + if (this->tunnel && this->tunnel->is_sa(this->tunnel, ike_sa)) + { /* do not sync SA between nodes */ + return TRUE; + } + + + if (state == CHILD_DESTROYING) + { + ha_message_t *m; + + m = ha_message_create(HA_CHILD_DELETE); + + m->add_attribute(m, HA_IKE_ID, ike_sa->get_id(ike_sa)); + m->add_attribute(m, HA_INBOUND_SPI, + child_sa->get_spi(child_sa, TRUE)); + this->socket->push(this->socket, m); + } + return TRUE; +} + +/** + * Implementation of ha_child_t.destroy. + */ +static void destroy(private_ha_child_t *this) +{ + free(this); +} + +/** + * See header + */ +ha_child_t *ha_child_create(ha_socket_t *socket, ha_tunnel_t *tunnel) +{ + private_ha_child_t *this = malloc_thing(private_ha_child_t); + + memset(&this->public.listener, 0, sizeof(listener_t)); + this->public.listener.child_keys = (bool(*)(listener_t*, ike_sa_t *ike_sa, child_sa_t *child_sa, diffie_hellman_t *dh, chunk_t nonce_i, chunk_t nonce_r))child_keys; + this->public.listener.child_state_change = (bool(*)(listener_t*,ike_sa_t *ike_sa, child_sa_t *child_sa, child_sa_state_t state))child_state_change; + this->public.destroy = (void(*)(ha_child_t*))destroy; + + this->socket = socket; + this->tunnel = tunnel; + + return &this->public; +} + diff --git a/src/libcharon/plugins/ha/ha_child.h b/src/libcharon/plugins/ha/ha_child.h new file mode 100644 index 000000000..ea83495f7 --- /dev/null +++ b/src/libcharon/plugins/ha/ha_child.h @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup ha_child ha_child + * @{ @ingroup ha + */ + +#ifndef HA_CHILD_H_ +#define HA_CHILD_H_ + +#include "ha_socket.h" +#include "ha_tunnel.h" +#include "ha_segments.h" + +#include <daemon.h> + +typedef struct ha_child_t ha_child_t; + +/** + * Listener to synchronize CHILD_SAs. + */ +struct ha_child_t { + + /** + * Implements bus listener interface. + */ + listener_t listener; + + /** + * Destroy a ha_child_t. + */ + void (*destroy)(ha_child_t *this); +}; + +/** + * Create a ha_child instance. + * + * @param socket socket to use for sending synchronization messages + * @param tunnel tunnel securing sync messages, if any + * @return CHILD listener + */ +ha_child_t *ha_child_create(ha_socket_t *socket, ha_tunnel_t *tunnel); + +#endif /* HA_CHILD_ @}*/ diff --git a/src/libcharon/plugins/ha/ha_ctl.c b/src/libcharon/plugins/ha/ha_ctl.c new file mode 100644 index 000000000..441d26d9e --- /dev/null +++ b/src/libcharon/plugins/ha/ha_ctl.c @@ -0,0 +1,132 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "ha_ctl.h" + +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/select.h> +#include <fcntl.h> +#include <unistd.h> +#include <errno.h> +#include <pthread.h> + +#include <processing/jobs/callback_job.h> + +#define HA_FIFO IPSEC_PIDDIR "/charon.ha" + +typedef struct private_ha_ctl_t private_ha_ctl_t; + +/** + * Private data of an ha_ctl_t object. + */ +struct private_ha_ctl_t { + + /** + * Public ha_ctl_t interface. + */ + ha_ctl_t public; + + /** + * Segments to control + */ + ha_segments_t *segments; + + /** + * FIFO reader thread + */ + callback_job_t *job; +}; + +/** + * FIFO dispatching function + */ +static job_requeue_t dispatch_fifo(private_ha_ctl_t *this) +{ + int fifo, old; + char buf[8]; + u_int segment; + + pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &old); + fifo = open(HA_FIFO, O_RDONLY); + pthread_setcancelstate(old, NULL); + if (fifo == -1) + { + DBG1(DBG_CFG, "opening HA fifo failed: %s", strerror(errno)); + sleep(1); + return JOB_REQUEUE_FAIR; + } + + memset(buf, 0, sizeof(buf)); + if (read(fifo, buf, sizeof(buf)-1) > 1) + { + segment = atoi(&buf[1]); + if (segment) + { + switch (buf[0]) + { + case '+': + this->segments->activate(this->segments, segment, TRUE); + break; + case '-': + this->segments->deactivate(this->segments, segment, TRUE); + break; + case '*': + this->segments->resync(this->segments, segment); + break; + default: + break; + } + } + } + close(fifo); + + return JOB_REQUEUE_DIRECT; +} + +/** + * Implementation of ha_ctl_t.destroy. + */ +static void destroy(private_ha_ctl_t *this) +{ + this->job->cancel(this->job); + free(this); +} + +/** + * See header + */ +ha_ctl_t *ha_ctl_create(ha_segments_t *segments) +{ + private_ha_ctl_t *this = malloc_thing(private_ha_ctl_t); + + this->public.destroy = (void(*)(ha_ctl_t*))destroy; + + if (access(HA_FIFO, R_OK|W_OK) != 0) + { + if (mkfifo(HA_FIFO, 600) != 0) + { + DBG1(DBG_CFG, "creating HA FIFO %s failed: %s", + HA_FIFO, strerror(errno)); + } + } + + this->segments = segments; + this->job = callback_job_create((callback_job_cb_t)dispatch_fifo, + this, NULL, NULL); + charon->processor->queue_job(charon->processor, (job_t*)this->job); + return &this->public; +} + diff --git a/src/libcharon/plugins/ha/ha_ctl.h b/src/libcharon/plugins/ha/ha_ctl.h new file mode 100644 index 000000000..f33a809be --- /dev/null +++ b/src/libcharon/plugins/ha/ha_ctl.h @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup ha_ctl ha_ctl + * @{ @ingroup ha + */ + +#ifndef HA_CTL_H_ +#define HA_CTL_H_ + +#include "ha_segments.h" + +typedef struct ha_ctl_t ha_ctl_t; + +/** + * HA Sync control interface using a FIFO. + */ +struct ha_ctl_t { + + /** + * Destroy a ha_ctl_t. + */ + void (*destroy)(ha_ctl_t *this); +}; + +/** + * Create a ha_ctl instance. + * + * @param segments segments to control + * @return HA control interface + */ +ha_ctl_t *ha_ctl_create(ha_segments_t *segments); + +#endif /* HA_CTL_ @}*/ diff --git a/src/libcharon/plugins/ha/ha_dispatcher.c b/src/libcharon/plugins/ha/ha_dispatcher.c new file mode 100644 index 000000000..7df2f1fa8 --- /dev/null +++ b/src/libcharon/plugins/ha/ha_dispatcher.c @@ -0,0 +1,737 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "ha_dispatcher.h" + +#include <daemon.h> +#include <processing/jobs/callback_job.h> + +typedef struct private_ha_dispatcher_t private_ha_dispatcher_t; + +/** + * Private data of an ha_dispatcher_t object. + */ +struct private_ha_dispatcher_t { + + /** + * Public ha_dispatcher_t interface. + */ + ha_dispatcher_t public; + + /** + * socket to pull messages from + */ + ha_socket_t *socket; + + /** + * segments to control + */ + ha_segments_t *segments; + + /** + * Dispatcher job + */ + callback_job_t *job; +}; + +/** + * Quick and dirty hack implementation of diffie_hellman_t.get_shared_secret + */ +static status_t get_shared_secret(diffie_hellman_t *this, chunk_t *secret) +{ + *secret = chunk_clone((*(chunk_t*)this->destroy)); + return SUCCESS; +} + +/** + * Process messages of type IKE_ADD + */ +static void process_ike_add(private_ha_dispatcher_t *this, ha_message_t *message) +{ + ha_message_attribute_t attribute; + ha_message_value_t value; + enumerator_t *enumerator; + ike_sa_t *ike_sa = NULL, *old_sa = NULL; + u_int16_t encr = 0, len = 0, integ = 0, prf = 0, old_prf = PRF_UNDEFINED; + chunk_t nonce_i = chunk_empty, nonce_r = chunk_empty; + chunk_t secret = chunk_empty, old_skd = chunk_empty; + + enumerator = message->create_attribute_enumerator(message); + while (enumerator->enumerate(enumerator, &attribute, &value)) + { + switch (attribute) + { + case HA_IKE_ID: + ike_sa = ike_sa_create(value.ike_sa_id); + break; + case HA_IKE_REKEY_ID: + old_sa = charon->ike_sa_manager->checkout(charon->ike_sa_manager, + value.ike_sa_id); + break; + case HA_NONCE_I: + nonce_i = value.chunk; + break; + case HA_NONCE_R: + nonce_r = value.chunk; + break; + case HA_SECRET: + secret = value.chunk; + break; + case HA_OLD_SKD: + old_skd = value.chunk; + break; + case HA_ALG_ENCR: + encr = value.u16; + break; + case HA_ALG_ENCR_LEN: + len = value.u16; + break; + case HA_ALG_INTEG: + integ = value.u16; + break; + case HA_ALG_PRF: + prf = value.u16; + break; + case HA_ALG_OLD_PRF: + old_prf = value.u16; + break; + default: + break; + } + } + enumerator->destroy(enumerator); + + if (ike_sa) + { + proposal_t *proposal; + keymat_t *keymat; + /* quick and dirty hack of a DH implementation ;-) */ + diffie_hellman_t dh = { .get_shared_secret = get_shared_secret, + .destroy = (void*)&secret }; + + proposal = proposal_create(PROTO_IKE); + keymat = ike_sa->get_keymat(ike_sa); + if (integ) + { + proposal->add_algorithm(proposal, INTEGRITY_ALGORITHM, integ, 0); + } + if (encr) + { + proposal->add_algorithm(proposal, ENCRYPTION_ALGORITHM, encr, len); + } + if (prf) + { + proposal->add_algorithm(proposal, PSEUDO_RANDOM_FUNCTION, prf, 0); + } + charon->bus->set_sa(charon->bus, ike_sa); + if (keymat->derive_ike_keys(keymat, proposal, &dh, nonce_i, nonce_r, + ike_sa->get_id(ike_sa), old_prf, old_skd)) + { + if (old_sa) + { + peer_cfg_t *peer_cfg = old_sa->get_peer_cfg(old_sa); + + if (peer_cfg) + { + ike_sa->set_peer_cfg(ike_sa, peer_cfg); + ike_sa->inherit(ike_sa, old_sa); + } + charon->ike_sa_manager->checkin_and_destroy( + charon->ike_sa_manager, old_sa); + old_sa = NULL; + } + ike_sa->set_state(ike_sa, IKE_CONNECTING); + charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa); + } + else + { + DBG1(DBG_IKE, "HA keymat derivation failed"); + ike_sa->destroy(ike_sa); + } + charon->bus->set_sa(charon->bus, NULL); + proposal->destroy(proposal); + } + if (old_sa) + { + charon->ike_sa_manager->checkin(charon->ike_sa_manager, old_sa); + } +} + +/** + * Apply a condition flag to the IKE_SA if it is in set + */ +static void set_condition(ike_sa_t *ike_sa, ike_condition_t set, + ike_condition_t flag) +{ + ike_sa->set_condition(ike_sa, flag, flag & set); +} + +/** + * Apply a extension flag to the IKE_SA if it is in set + */ +static void set_extension(ike_sa_t *ike_sa, ike_extension_t set, + ike_extension_t flag) +{ + if (flag & set) + { + ike_sa->enable_extension(ike_sa, flag); + } +} + +/** + * Process messages of type IKE_UPDATE + */ +static void process_ike_update(private_ha_dispatcher_t *this, + ha_message_t *message) +{ + ha_message_attribute_t attribute; + ha_message_value_t value; + enumerator_t *enumerator; + ike_sa_t *ike_sa = NULL; + peer_cfg_t *peer_cfg = NULL; + + enumerator = message->create_attribute_enumerator(message); + while (enumerator->enumerate(enumerator, &attribute, &value)) + { + if (attribute != HA_IKE_ID && ike_sa == NULL) + { + /* must be first attribute */ + break; + } + switch (attribute) + { + case HA_IKE_ID: + ike_sa = charon->ike_sa_manager->checkout(charon->ike_sa_manager, + value.ike_sa_id); + break; + case HA_LOCAL_ID: + ike_sa->set_my_id(ike_sa, value.id->clone(value.id)); + break; + case HA_REMOTE_ID: + ike_sa->set_other_id(ike_sa, value.id->clone(value.id)); + break; + case HA_LOCAL_ADDR: + ike_sa->set_my_host(ike_sa, value.host->clone(value.host)); + break; + case HA_REMOTE_ADDR: + ike_sa->set_other_host(ike_sa, value.host->clone(value.host)); + break; + case HA_LOCAL_VIP: + ike_sa->set_virtual_ip(ike_sa, TRUE, value.host); + break; + case HA_REMOTE_VIP: + ike_sa->set_virtual_ip(ike_sa, FALSE, value.host); + break; + case HA_ADDITIONAL_ADDR: + ike_sa->add_additional_address(ike_sa, + value.host->clone(value.host)); + break; + case HA_CONFIG_NAME: + peer_cfg = charon->backends->get_peer_cfg_by_name( + charon->backends, value.str); + if (peer_cfg) + { + ike_sa->set_peer_cfg(ike_sa, peer_cfg); + peer_cfg->destroy(peer_cfg); + } + else + { + DBG1(DBG_IKE, "HA is missing nodes peer configuration"); + } + break; + case HA_EXTENSIONS: + set_extension(ike_sa, value.u32, EXT_NATT); + set_extension(ike_sa, value.u32, EXT_MOBIKE); + set_extension(ike_sa, value.u32, EXT_HASH_AND_URL); + break; + case HA_CONDITIONS: + set_condition(ike_sa, value.u32, COND_NAT_ANY); + set_condition(ike_sa, value.u32, COND_NAT_HERE); + set_condition(ike_sa, value.u32, COND_NAT_THERE); + set_condition(ike_sa, value.u32, COND_NAT_FAKE); + set_condition(ike_sa, value.u32, COND_EAP_AUTHENTICATED); + set_condition(ike_sa, value.u32, COND_CERTREQ_SEEN); + set_condition(ike_sa, value.u32, COND_ORIGINAL_INITIATOR); + break; + case HA_INITIATE_MID: + ike_sa->set_message_id(ike_sa, TRUE, value.u32); + break; + case HA_RESPOND_MID: + ike_sa->set_message_id(ike_sa, FALSE, value.u32); + break; + default: + break; + } + } + enumerator->destroy(enumerator); + + if (ike_sa) + { + if (ike_sa->get_state(ike_sa) == IKE_CONNECTING && + ike_sa->get_peer_cfg(ike_sa)) + { + ike_sa->set_state(ike_sa, IKE_PASSIVE); + } + charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa); + } +} + +/** + * Process messages of type IKE_DELETE + */ +static void process_ike_delete(private_ha_dispatcher_t *this, + ha_message_t *message) +{ + ha_message_attribute_t attribute; + ha_message_value_t value; + enumerator_t *enumerator; + ike_sa_t *ike_sa; + + enumerator = message->create_attribute_enumerator(message); + while (enumerator->enumerate(enumerator, &attribute, &value)) + { + switch (attribute) + { + case HA_IKE_ID: + ike_sa = charon->ike_sa_manager->checkout( + charon->ike_sa_manager, value.ike_sa_id); + if (ike_sa) + { + charon->ike_sa_manager->checkin_and_destroy( + charon->ike_sa_manager, ike_sa); + } + break; + default: + break; + } + } + enumerator->destroy(enumerator); +} + +/** + * Lookup a child cfg from the peer cfg by name + */ +static child_cfg_t* find_child_cfg(ike_sa_t *ike_sa, char *name) +{ + peer_cfg_t *peer_cfg; + child_cfg_t *current, *found = NULL; + enumerator_t *enumerator; + + peer_cfg = ike_sa->get_peer_cfg(ike_sa); + if (peer_cfg) + { + enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg); + while (enumerator->enumerate(enumerator, ¤t)) + { + if (streq(current->get_name(current), name)) + { + found = current; + break; + } + } + enumerator->destroy(enumerator); + } + return found; +} + +/** + * Process messages of type CHILD_ADD + */ +static void process_child_add(private_ha_dispatcher_t *this, + ha_message_t *message) +{ + ha_message_attribute_t attribute; + ha_message_value_t value; + enumerator_t *enumerator; + ike_sa_t *ike_sa = NULL; + char *config_name = ""; + child_cfg_t *config = NULL; + child_sa_t *child_sa; + proposal_t *proposal; + keymat_t *keymat; + bool initiator = FALSE, failed = FALSE; + u_int32_t inbound_spi = 0, outbound_spi = 0; + u_int16_t inbound_cpi = 0, outbound_cpi = 0; + u_int8_t mode = MODE_TUNNEL, ipcomp = 0; + u_int16_t encr = ENCR_UNDEFINED, integ = AUTH_UNDEFINED, len = 0; + chunk_t nonce_i = chunk_empty, nonce_r = chunk_empty, secret = chunk_empty; + chunk_t encr_i, integ_i, encr_r, integ_r; + linked_list_t *local_ts, *remote_ts; + /* quick and dirty hack of a DH implementation */ + diffie_hellman_t dh = { .get_shared_secret = get_shared_secret, + .destroy = (void*)&secret }; + + enumerator = message->create_attribute_enumerator(message); + while (enumerator->enumerate(enumerator, &attribute, &value)) + { + switch (attribute) + { + case HA_IKE_ID: + ike_sa = charon->ike_sa_manager->checkout(charon->ike_sa_manager, + value.ike_sa_id); + initiator = value.ike_sa_id->is_initiator(value.ike_sa_id); + break; + case HA_CONFIG_NAME: + config_name = value.str; + break; + case HA_INBOUND_SPI: + inbound_spi = value.u32; + break; + case HA_OUTBOUND_SPI: + outbound_spi = value.u32; + break; + case HA_INBOUND_CPI: + inbound_cpi = value.u32; + break; + case HA_OUTBOUND_CPI: + outbound_cpi = value.u32; + break; + case HA_IPSEC_MODE: + mode = value.u8; + break; + case HA_IPCOMP: + ipcomp = value.u8; + break; + case HA_ALG_ENCR: + encr = value.u16; + break; + case HA_ALG_ENCR_LEN: + len = value.u16; + break; + case HA_ALG_INTEG: + integ = value.u16; + break; + case HA_NONCE_I: + nonce_i = value.chunk; + break; + case HA_NONCE_R: + nonce_r = value.chunk; + break; + case HA_SECRET: + secret = value.chunk; + break; + default: + break; + } + } + enumerator->destroy(enumerator); + + if (!ike_sa) + { + DBG1(DBG_CHD, "IKE_SA for HA CHILD_SA not found"); + return; + } + config = find_child_cfg(ike_sa, config_name); + if (!config) + { + DBG1(DBG_CHD, "HA is missing nodes child configuration"); + charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa); + return; + } + + child_sa = child_sa_create(ike_sa->get_my_host(ike_sa), + ike_sa->get_other_host(ike_sa), config, 0, + ike_sa->has_condition(ike_sa, COND_NAT_ANY)); + child_sa->set_mode(child_sa, mode); + child_sa->set_protocol(child_sa, PROTO_ESP); + child_sa->set_ipcomp(child_sa, ipcomp); + + proposal = proposal_create(PROTO_ESP); + if (integ) + { + proposal->add_algorithm(proposal, INTEGRITY_ALGORITHM, integ, 0); + } + if (encr) + { + proposal->add_algorithm(proposal, ENCRYPTION_ALGORITHM, encr, len); + } + keymat = ike_sa->get_keymat(ike_sa); + + if (!keymat->derive_child_keys(keymat, proposal, secret.ptr ? &dh : NULL, + nonce_i, nonce_r, &encr_i, &integ_i, &encr_r, &integ_r)) + { + DBG1(DBG_CHD, "HA CHILD_SA key derivation failed"); + child_sa->destroy(child_sa); + proposal->destroy(proposal); + charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa); + return; + } + child_sa->set_proposal(child_sa, proposal); + child_sa->set_state(child_sa, CHILD_INSTALLING); + proposal->destroy(proposal); + + /* TODO: Change CHILD_SA API to avoid cloning twice */ + local_ts = linked_list_create(); + remote_ts = linked_list_create(); + enumerator = message->create_attribute_enumerator(message); + while (enumerator->enumerate(enumerator, &attribute, &value)) + { + switch (attribute) + { + case HA_LOCAL_TS: + local_ts->insert_last(local_ts, value.ts->clone(value.ts)); + break; + case HA_REMOTE_TS: + remote_ts->insert_last(remote_ts, value.ts->clone(value.ts)); + break; + default: + break; + } + } + enumerator->destroy(enumerator); + + if (initiator) + { + if (child_sa->install(child_sa, encr_r, integ_r, inbound_spi, + inbound_cpi, TRUE, local_ts, remote_ts) != SUCCESS || + child_sa->install(child_sa, encr_i, integ_i, outbound_spi, + outbound_cpi, FALSE, local_ts, remote_ts) != SUCCESS) + { + failed = TRUE; + } + } + else + { + if (child_sa->install(child_sa, encr_i, integ_i, inbound_spi, + inbound_cpi, TRUE, local_ts, remote_ts) != SUCCESS || + child_sa->install(child_sa, encr_r, integ_r, outbound_spi, + outbound_cpi, FALSE, local_ts, remote_ts) != SUCCESS) + { + failed = TRUE; + } + } + chunk_clear(&encr_i); + chunk_clear(&integ_i); + chunk_clear(&encr_r); + chunk_clear(&integ_r); + + if (failed) + { + DBG1(DBG_CHD, "HA CHILD_SA installation failed"); + child_sa->destroy(child_sa); + local_ts->destroy_offset(local_ts, offsetof(traffic_selector_t, destroy)); + remote_ts->destroy_offset(remote_ts, offsetof(traffic_selector_t, destroy)); + charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa); + return; + } + + child_sa->add_policies(child_sa, local_ts, remote_ts); + local_ts->destroy_offset(local_ts, offsetof(traffic_selector_t, destroy)); + remote_ts->destroy_offset(remote_ts, offsetof(traffic_selector_t, destroy)); + + child_sa->set_state(child_sa, CHILD_INSTALLED); + ike_sa->add_child_sa(ike_sa, child_sa); + charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa); +} + +/** + * Process messages of type CHILD_DELETE + */ +static void process_child_delete(private_ha_dispatcher_t *this, + ha_message_t *message) +{ + ha_message_attribute_t attribute; + ha_message_value_t value; + enumerator_t *enumerator; + ike_sa_t *ike_sa = NULL; + + enumerator = message->create_attribute_enumerator(message); + while (enumerator->enumerate(enumerator, &attribute, &value)) + { + switch (attribute) + { + case HA_IKE_ID: + ike_sa = charon->ike_sa_manager->checkout(charon->ike_sa_manager, + value.ike_sa_id); + break; + case HA_INBOUND_SPI: + if (ike_sa) + { + ike_sa->destroy_child_sa(ike_sa, PROTO_ESP, value.u32); + } + break; + default: + break; + } + } + if (ike_sa) + { + charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa); + } + enumerator->destroy(enumerator); +} + +/** + * Process messages of type SEGMENT_TAKE/DROP + */ +static void process_segment(private_ha_dispatcher_t *this, + ha_message_t *message, bool take) +{ + ha_message_attribute_t attribute; + ha_message_value_t value; + enumerator_t *enumerator; + + enumerator = message->create_attribute_enumerator(message); + while (enumerator->enumerate(enumerator, &attribute, &value)) + { + switch (attribute) + { + case HA_SEGMENT: + if (take) + { + DBG1(DBG_CFG, "remote node takes segment %d", value.u16); + this->segments->deactivate(this->segments, value.u16, FALSE); + } + else + { + DBG1(DBG_CFG, "remote node drops segment %d", value.u16); + this->segments->activate(this->segments, value.u16, FALSE); + } + break; + default: + break; + } + } + enumerator->destroy(enumerator); +} + +/** + * Process messages of type STATUS + */ +static void process_status(private_ha_dispatcher_t *this, + ha_message_t *message) +{ + ha_message_attribute_t attribute; + ha_message_value_t value; + enumerator_t *enumerator; + segment_mask_t mask = 0; + + enumerator = message->create_attribute_enumerator(message); + while (enumerator->enumerate(enumerator, &attribute, &value)) + { + switch (attribute) + { + case HA_SEGMENT: + mask |= SEGMENTS_BIT(value.u16); + break; + default: + break; + } + } + enumerator->destroy(enumerator); + + this->segments->handle_status(this->segments, mask); +} + +/** + * Process messages of type RESYNC + */ +static void process_resync(private_ha_dispatcher_t *this, + ha_message_t *message) +{ + ha_message_attribute_t attribute; + ha_message_value_t value; + enumerator_t *enumerator; + + enumerator = message->create_attribute_enumerator(message); + while (enumerator->enumerate(enumerator, &attribute, &value)) + { + switch (attribute) + { + case HA_SEGMENT: + this->segments->resync(this->segments, value.u16); + break; + default: + break; + } + } + enumerator->destroy(enumerator); +} + +/** + * Dispatcher job function + */ +static job_requeue_t dispatch(private_ha_dispatcher_t *this) +{ + ha_message_t *message; + + message = this->socket->pull(this->socket); + switch (message->get_type(message)) + { + case HA_IKE_ADD: + process_ike_add(this, message); + break; + case HA_IKE_UPDATE: + process_ike_update(this, message); + break; + case HA_IKE_DELETE: + process_ike_delete(this, message); + break; + case HA_CHILD_ADD: + process_child_add(this, message); + break; + case HA_CHILD_DELETE: + process_child_delete(this, message); + break; + case HA_SEGMENT_DROP: + process_segment(this, message, FALSE); + break; + case HA_SEGMENT_TAKE: + process_segment(this, message, TRUE); + break; + case HA_STATUS: + process_status(this, message); + break; + case HA_RESYNC: + process_resync(this, message); + break; + default: + DBG1(DBG_CFG, "received unknown HA message type %d", + message->get_type(message)); + break; + } + message->destroy(message); + + return JOB_REQUEUE_DIRECT; +} + +/** + * Implementation of ha_dispatcher_t.destroy. + */ +static void destroy(private_ha_dispatcher_t *this) +{ + this->job->cancel(this->job); + free(this); +} + +/** + * See header + */ +ha_dispatcher_t *ha_dispatcher_create(ha_socket_t *socket, + ha_segments_t *segments) +{ + private_ha_dispatcher_t *this = malloc_thing(private_ha_dispatcher_t); + + this->public.destroy = (void(*)(ha_dispatcher_t*))destroy; + + this->socket = socket; + this->segments = segments; + this->job = callback_job_create((callback_job_cb_t)dispatch, + this, NULL, NULL); + charon->processor->queue_job(charon->processor, (job_t*)this->job); + + return &this->public; +} + diff --git a/src/libcharon/plugins/ha/ha_dispatcher.h b/src/libcharon/plugins/ha/ha_dispatcher.h new file mode 100644 index 000000000..d2baace3f --- /dev/null +++ b/src/libcharon/plugins/ha/ha_dispatcher.h @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup ha_dispatcher ha_dispatcher + * @{ @ingroup ha + */ + +#ifndef HA_DISPATCHER_H_ +#define HA_DISPATCHER_H_ + +#include "ha_socket.h" +#include "ha_segments.h" + +typedef struct ha_dispatcher_t ha_dispatcher_t; + +/** + * The dispatcher pulls messages in a thread an processes them. + */ +struct ha_dispatcher_t { + + /** + * Destroy a ha_dispatcher_t. + */ + void (*destroy)(ha_dispatcher_t *this); +}; + +/** + * Create a ha_dispatcher instance pulling from socket. + * + * @param socket socket to pull messages from + * @param segments segments to control based on received messages + * @return dispatcher object + */ +ha_dispatcher_t *ha_dispatcher_create(ha_socket_t *socket, + ha_segments_t *segments); + +#endif /* HA_DISPATCHER_ @}*/ diff --git a/src/libcharon/plugins/ha/ha_ike.c b/src/libcharon/plugins/ha/ha_ike.c new file mode 100644 index 000000000..1f025d0e5 --- /dev/null +++ b/src/libcharon/plugins/ha/ha_ike.c @@ -0,0 +1,280 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "ha_ike.h" + +typedef struct private_ha_ike_t private_ha_ike_t; + +/** + * Private data of an ha_ike_t object. + */ +struct private_ha_ike_t { + + /** + * Public ha_ike_t interface. + */ + ha_ike_t public; + + /** + * socket we use for syncing + */ + ha_socket_t *socket; + + /** + * tunnel securing sync messages + */ + ha_tunnel_t *tunnel; +}; + +/** + * Return condition if it is set on ike_sa + */ +static ike_condition_t copy_condition(ike_sa_t *ike_sa, ike_condition_t cond) +{ + if (ike_sa->has_condition(ike_sa, cond)) + { + return cond; + } + return 0; +} + +/** + * Return extension if it is supported by peers IKE_SA + */ +static ike_extension_t copy_extension(ike_sa_t *ike_sa, ike_extension_t ext) +{ + if (ike_sa->supports_extension(ike_sa, ext)) + { + return ext; + } + return 0; +} + +/** + * Implementation of listener_t.ike_keys + */ +static bool ike_keys(private_ha_ike_t *this, ike_sa_t *ike_sa, + diffie_hellman_t *dh, chunk_t nonce_i, chunk_t nonce_r, + ike_sa_t *rekey) +{ + ha_message_t *m; + chunk_t secret; + proposal_t *proposal; + u_int16_t alg, len; + + if (this->tunnel && this->tunnel->is_sa(this->tunnel, ike_sa)) + { /* do not sync SA between nodes */ + return TRUE; + } + if (dh->get_shared_secret(dh, &secret) != SUCCESS) + { + return TRUE; + } + + m = ha_message_create(HA_IKE_ADD); + m->add_attribute(m, HA_IKE_ID, ike_sa->get_id(ike_sa)); + + if (rekey) + { + chunk_t skd; + keymat_t *keymat; + + keymat = rekey->get_keymat(rekey); + m->add_attribute(m, HA_IKE_REKEY_ID, rekey->get_id(rekey)); + m->add_attribute(m, HA_ALG_OLD_PRF, keymat->get_skd(keymat, &skd)); + m->add_attribute(m, HA_OLD_SKD, skd); + } + + proposal = ike_sa->get_proposal(ike_sa); + if (proposal->get_algorithm(proposal, ENCRYPTION_ALGORITHM, &alg, &len)) + { + m->add_attribute(m, HA_ALG_ENCR, alg); + if (len) + { + m->add_attribute(m, HA_ALG_ENCR_LEN, len); + } + } + if (proposal->get_algorithm(proposal, INTEGRITY_ALGORITHM, &alg, NULL)) + { + m->add_attribute(m, HA_ALG_INTEG, alg); + } + if (proposal->get_algorithm(proposal, PSEUDO_RANDOM_FUNCTION, &alg, NULL)) + { + m->add_attribute(m, HA_ALG_PRF, alg); + } + m->add_attribute(m, HA_NONCE_I, nonce_i); + m->add_attribute(m, HA_NONCE_R, nonce_r); + m->add_attribute(m, HA_SECRET, secret); + chunk_clear(&secret); + + this->socket->push(this->socket, m); + + return TRUE; +} + +/** + * Implementation of listener_t.ike_updown + */ +static bool ike_updown(private_ha_ike_t *this, ike_sa_t *ike_sa, bool up) +{ + ha_message_t *m; + + if (ike_sa->get_state(ike_sa) == IKE_PASSIVE) + { /* only sync active IKE_SAs */ + return TRUE; + } + if (this->tunnel && this->tunnel->is_sa(this->tunnel, ike_sa)) + { /* do not sync SA between nodes */ + return TRUE; + } + + if (up) + { + iterator_t *iterator; + peer_cfg_t *peer_cfg; + u_int32_t extension, condition; + host_t *addr; + ike_sa_id_t *id; + + peer_cfg = ike_sa->get_peer_cfg(ike_sa); + + condition = copy_condition(ike_sa, COND_NAT_ANY) + | copy_condition(ike_sa, COND_NAT_HERE) + | copy_condition(ike_sa, COND_NAT_THERE) + | copy_condition(ike_sa, COND_NAT_FAKE) + | copy_condition(ike_sa, COND_EAP_AUTHENTICATED) + | copy_condition(ike_sa, COND_CERTREQ_SEEN) + | copy_condition(ike_sa, COND_ORIGINAL_INITIATOR); + + extension = copy_extension(ike_sa, EXT_NATT) + | copy_extension(ike_sa, EXT_MOBIKE) + | copy_extension(ike_sa, EXT_HASH_AND_URL); + + id = ike_sa->get_id(ike_sa); + + m = ha_message_create(HA_IKE_UPDATE); + m->add_attribute(m, HA_IKE_ID, id); + m->add_attribute(m, HA_LOCAL_ID, ike_sa->get_my_id(ike_sa)); + m->add_attribute(m, HA_REMOTE_ID, ike_sa->get_other_id(ike_sa)); + m->add_attribute(m, HA_LOCAL_ADDR, ike_sa->get_my_host(ike_sa)); + m->add_attribute(m, HA_REMOTE_ADDR, ike_sa->get_other_host(ike_sa)); + m->add_attribute(m, HA_CONDITIONS, condition); + m->add_attribute(m, HA_EXTENSIONS, extension); + m->add_attribute(m, HA_CONFIG_NAME, peer_cfg->get_name(peer_cfg)); + iterator = ike_sa->create_additional_address_iterator(ike_sa); + while (iterator->iterate(iterator, (void**)&addr)) + { + m->add_attribute(m, HA_ADDITIONAL_ADDR, addr); + } + iterator->destroy(iterator); + } + else + { + m = ha_message_create(HA_IKE_DELETE); + m->add_attribute(m, HA_IKE_ID, ike_sa->get_id(ike_sa)); + } + this->socket->push(this->socket, m); + return TRUE; +} + +/** + * Implementation of listener_t.ike_rekey + */ +static bool ike_rekey(private_ha_ike_t *this, ike_sa_t *old, ike_sa_t *new) +{ + ike_updown(this, old, FALSE); + ike_updown(this, new, TRUE); + return TRUE; +} + +/** + * Implementation of listener_t.message + */ +static bool message_hook(private_ha_ike_t *this, ike_sa_t *ike_sa, + message_t *message, bool incoming) +{ + if (this->tunnel && this->tunnel->is_sa(this->tunnel, ike_sa)) + { /* do not sync SA between nodes */ + return TRUE; + } + + if (message->get_exchange_type(message) != IKE_SA_INIT && + message->get_request(message)) + { /* we sync on requests, but skip it on IKE_SA_INIT */ + ha_message_t *m; + u_int32_t mid; + + m = ha_message_create(HA_IKE_UPDATE); + m->add_attribute(m, HA_IKE_ID, ike_sa->get_id(ike_sa)); + mid = message->get_message_id(message) + 1; + if (incoming) + { + m->add_attribute(m, HA_RESPOND_MID, mid); + } + else + { + m->add_attribute(m, HA_INITIATE_MID, mid); + } + this->socket->push(this->socket, m); + } + if (ike_sa->get_state(ike_sa) == IKE_ESTABLISHED && + message->get_exchange_type(message) == IKE_AUTH && + !message->get_request(message)) + { /* After IKE_SA has been established, sync peers virtual IP. + * We cannot sync it in the state_change hook, it is installed later. + * TODO: where to sync local VIP? */ + ha_message_t *m; + host_t *vip; + + vip = ike_sa->get_virtual_ip(ike_sa, FALSE); + if (vip) + { + m = ha_message_create(HA_IKE_UPDATE); + m->add_attribute(m, HA_IKE_ID, ike_sa->get_id(ike_sa)); + m->add_attribute(m, HA_REMOTE_VIP, vip); + this->socket->push(this->socket, m); + } + } + return TRUE; +} + +/** + * Implementation of ha_ike_t.destroy. + */ +static void destroy(private_ha_ike_t *this) +{ + free(this); +} + +/** + * See header + */ +ha_ike_t *ha_ike_create(ha_socket_t *socket, ha_tunnel_t *tunnel) +{ + private_ha_ike_t *this = malloc_thing(private_ha_ike_t); + + memset(&this->public.listener, 0, sizeof(listener_t)); + this->public.listener.ike_keys = (bool(*)(listener_t*, ike_sa_t *ike_sa, diffie_hellman_t *dh,chunk_t nonce_i, chunk_t nonce_r, ike_sa_t *rekey))ike_keys; + this->public.listener.ike_updown = (bool(*)(listener_t*,ike_sa_t *ike_sa, bool up))ike_updown; + this->public.listener.ike_rekey = (bool(*)(listener_t*,ike_sa_t *old, ike_sa_t *new))ike_rekey; + this->public.listener.message = (bool(*)(listener_t*, ike_sa_t *, message_t *,bool))message_hook; + this->public.destroy = (void(*)(ha_ike_t*))destroy; + + this->socket = socket; + this->tunnel = tunnel; + + return &this->public; +} + diff --git a/src/libcharon/plugins/ha/ha_ike.h b/src/libcharon/plugins/ha/ha_ike.h new file mode 100644 index 000000000..9de210e67 --- /dev/null +++ b/src/libcharon/plugins/ha/ha_ike.h @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup ha_ike ha_ike + * @{ @ingroup ha + */ + +#ifndef HA_IKE_H_ +#define HA_IKE_H_ + +#include "ha_socket.h" +#include "ha_tunnel.h" +#include "ha_segments.h" + +#include <daemon.h> + +typedef struct ha_ike_t ha_ike_t; + +/** + * Listener to synchronize IKE_SAs. + */ +struct ha_ike_t { + + /** + * Implements bus listener interface. + */ + listener_t listener; + + /** + * Destroy a ha_ike_t. + */ + void (*destroy)(ha_ike_t *this); +}; + +/** + * Create a ha_ike instance. + * + * @param socket socket to use for sending synchronization messages + * @param tunnel tunnel securing sync messages, if any + * @return IKE listener + */ +ha_ike_t *ha_ike_create(ha_socket_t *socket, ha_tunnel_t *tunnel); + +#endif /* HA_IKE_ @}*/ diff --git a/src/libcharon/plugins/ha/ha_kernel.c b/src/libcharon/plugins/ha/ha_kernel.c new file mode 100644 index 000000000..0ad9c22c3 --- /dev/null +++ b/src/libcharon/plugins/ha/ha_kernel.c @@ -0,0 +1,229 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "ha_kernel.h" + +typedef u_int32_t u32; +typedef u_int8_t u8; + +#include <linux/jhash.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> + +#define CLUSTERIP_DIR "/proc/net/ipt_CLUSTERIP" + +typedef struct private_ha_kernel_t private_ha_kernel_t; + +/** + * Private data of an ha_kernel_t object. + */ +struct private_ha_kernel_t { + + /** + * Public ha_kernel_t interface. + */ + ha_kernel_t public; + + /** + * Init value for jhash + */ + u_int initval; + + /** + * Total number of ClusterIP segments + */ + u_int count; +}; + +/** + * Implementation of ha_kernel_t.in_segment + */ +static bool in_segment(private_ha_kernel_t *this, host_t *host, u_int segment) +{ + if (host->get_family(host) == AF_INET) + { + unsigned long hash; + u_int32_t addr; + + addr = *(u_int32_t*)host->get_address(host).ptr; + hash = jhash_1word(ntohl(addr), this->initval); + + if ((((u_int64_t)hash * this->count) >> 32) + 1 == segment) + { + return TRUE; + } + } + return FALSE; +} + +/** + * Activate/Deactivate a segment for a given clusterip file + */ +static void enable_disable(private_ha_kernel_t *this, u_int segment, + char *file, bool enable) +{ + char cmd[8]; + int fd; + + snprintf(cmd, sizeof(cmd), "%c%d\n", enable ? '+' : '-', segment); + + fd = open(file, O_WRONLY); + if (fd == -1) + { + DBG1(DBG_CFG, "opening CLUSTERIP file '%s' failed: %s", + file, strerror(errno)); + return; + } + if (write(fd, cmd, strlen(cmd) == -1)) + { + DBG1(DBG_CFG, "writing to CLUSTERIP file '%s' failed: %s", + file, strerror(errno)); + } + close(fd); +} + +/** + * Get the currenlty active segments in the kernel for a clusterip file + */ +static segment_mask_t get_active(private_ha_kernel_t *this, char *file) +{ + char buf[256]; + segment_mask_t mask = 0; + ssize_t len; + int fd; + + fd = open(file, O_RDONLY); + if (fd == -1) + { + DBG1(DBG_CFG, "opening CLUSTERIP file '%s' failed: %s", + file, strerror(errno)); + return 0; + } + len = read(fd, buf, sizeof(buf)-1); + if (len == -1) + { + DBG1(DBG_CFG, "reading from CLUSTERIP file '%s' failed: %s", + file, strerror(errno)); + } + else + { + enumerator_t *enumerator; + u_int segment; + char *token; + + buf[len] = '\0'; + enumerator = enumerator_create_token(buf, ",", " "); + while (enumerator->enumerate(enumerator, &token)) + { + segment = atoi(token); + if (segment) + { + mask |= SEGMENTS_BIT(segment); + } + } + enumerator->destroy(enumerator); + } + return mask; +} + +/** + * Implementation of ha_kernel_t.activate + */ +static void activate(private_ha_kernel_t *this, u_int segment) +{ + enumerator_t *enumerator; + char *file; + + enumerator = enumerator_create_directory(CLUSTERIP_DIR); + while (enumerator->enumerate(enumerator, NULL, &file, NULL)) + { + enable_disable(this, segment, file, TRUE); + } + enumerator->destroy(enumerator); +} + +/** + * Implementation of ha_kernel_t.deactivate + */ +static void deactivate(private_ha_kernel_t *this, u_int segment) +{ + enumerator_t *enumerator; + char *file; + + enumerator = enumerator_create_directory(CLUSTERIP_DIR); + while (enumerator->enumerate(enumerator, NULL, &file, NULL)) + { + enable_disable(this, segment, file, FALSE); + } + enumerator->destroy(enumerator); +} + +/** + * Disable all not-yet disabled segments on all clusterip addresses + */ +static void disable_all(private_ha_kernel_t *this) +{ + enumerator_t *enumerator; + segment_mask_t active; + char *file; + int i; + + enumerator = enumerator_create_directory(CLUSTERIP_DIR); + while (enumerator->enumerate(enumerator, NULL, &file, NULL)) + { + active = get_active(this, file); + for (i = 1; i <= this->count; i++) + { + if (active & SEGMENTS_BIT(i)) + { + enable_disable(this, i, file, FALSE); + } + } + } + enumerator->destroy(enumerator); +} + +/** + * Implementation of ha_kernel_t.destroy. + */ +static void destroy(private_ha_kernel_t *this) +{ + free(this); +} + +/** + * See header + */ +ha_kernel_t *ha_kernel_create(u_int count) +{ + private_ha_kernel_t *this = malloc_thing(private_ha_kernel_t); + + this->public.in_segment = (bool(*)(ha_kernel_t*, host_t *host, u_int segment))in_segment; + this->public.activate = (void(*)(ha_kernel_t*, u_int segment))activate; + this->public.deactivate = (void(*)(ha_kernel_t*, u_int segment))deactivate; + this->public.destroy = (void(*)(ha_kernel_t*))destroy; + + this->initval = 0; + this->count = count; + + disable_all(this); + + return &this->public; +} + diff --git a/src/libcharon/plugins/ha/ha_kernel.h b/src/libcharon/plugins/ha/ha_kernel.h new file mode 100644 index 000000000..b37cc7667 --- /dev/null +++ b/src/libcharon/plugins/ha/ha_kernel.h @@ -0,0 +1,70 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup ha_kernel ha_kernel + * @{ @ingroup ha + */ + +#ifndef HA_KERNEL_H_ +#define HA_KERNEL_H_ + +typedef struct ha_kernel_t ha_kernel_t; + +#include "ha_segments.h" + +/** + * HA segment kernel configuration interface. + */ +struct ha_kernel_t { + + /** + * Check if a host is in a segment. + * + * @param host host to check + * @param segment segment + * @return TRUE if host belongs to segment + */ + bool (*in_segment)(ha_kernel_t *this, host_t *host, u_int segment); + + /** + * Activate a segment at kernel level for all cluster addresses. + * + * @param segment segment to activate + */ + void (*activate)(ha_kernel_t *this, u_int segment); + + /** + * Deactivate a segment at kernel level for all cluster addresses. + * + * @param segment segment to deactivate + */ + void (*deactivate)(ha_kernel_t *this, u_int segment); + + /** + * Destroy a ha_kernel_t. + */ + void (*destroy)(ha_kernel_t *this); +}; + +/** + * Create a ha_kernel instance. + * + * @param count total number of segments to use + * @param active bitmask of initially active segments + */ +ha_kernel_t *ha_kernel_create(u_int count); + +#endif /* HA_KERNEL_ @}*/ diff --git a/src/libcharon/plugins/ha/ha_message.c b/src/libcharon/plugins/ha/ha_message.c new file mode 100644 index 000000000..54b10f05d --- /dev/null +++ b/src/libcharon/plugins/ha/ha_message.c @@ -0,0 +1,663 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#define _GNU_SOURCE +#include <string.h> +#include <arpa/inet.h> + +#include "ha_message.h" + +#include <daemon.h> + +#define ALLOCATION_BLOCK 64 + +typedef struct private_ha_message_t private_ha_message_t; + +/** + * Private data of an ha_message_t object. + */ +struct private_ha_message_t { + + /** + * Public ha_message_t interface. + */ + ha_message_t public; + + /** + * Allocated size of buf + */ + size_t allocated; + + /** + * Buffer containing encoded data + */ + chunk_t buf; +}; + +typedef struct ike_sa_id_encoding_t ike_sa_id_encoding_t; + +/** + * Encoding if an ike_sa_id_t + */ +struct ike_sa_id_encoding_t { + u_int64_t initiator_spi; + u_int64_t responder_spi; + u_int8_t initiator; +} __attribute__((packed)); + +typedef struct identification_encoding_t identification_encoding_t; + +/** + * Encoding of a identification_t + */ +struct identification_encoding_t { + u_int8_t type; + u_int8_t len; + char encoding[]; +} __attribute__((packed)); + +typedef struct host_encoding_t host_encoding_t; + +/** + * encoding of a host_t + */ +struct host_encoding_t { + u_int16_t port; + u_int8_t family; + char encoding[]; +} __attribute__((packed)); + +typedef struct ts_encoding_t ts_encoding_t; + +/** + * encoding of a traffic_selector_t + */ +struct ts_encoding_t { + u_int8_t type; + u_int8_t protocol; + u_int16_t from_port; + u_int16_t to_port; + u_int8_t dynamic; + char encoding[]; +} __attribute__((packed)); + +/** + * Implementation of ha_message_t.get_type + */ +static ha_message_type_t get_type(private_ha_message_t *this) +{ + return this->buf.ptr[1]; +} + +/** + * check for space in buffer, increase if necessary + */ +static void check_buf(private_ha_message_t *this, size_t len) +{ + int increased = 0; + + while (this->buf.len + len > this->allocated) + { /* double size */ + this->allocated += ALLOCATION_BLOCK; + increased++; + } + if (increased) + { + this->buf.ptr = realloc(this->buf.ptr, this->allocated); + } +} + +/** + * Implementation of ha_message_t.add_attribute + */ +static void add_attribute(private_ha_message_t *this, + ha_message_attribute_t attribute, ...) +{ + size_t len; + va_list args; + + check_buf(this, sizeof(u_int8_t)); + this->buf.ptr[this->buf.len] = attribute; + this->buf.len += sizeof(u_int8_t); + + va_start(args, attribute); + switch (attribute) + { + /* ike_sa_id_t* */ + case HA_IKE_ID: + case HA_IKE_REKEY_ID: + { + ike_sa_id_encoding_t *enc; + ike_sa_id_t *id; + + id = va_arg(args, ike_sa_id_t*); + check_buf(this, sizeof(ike_sa_id_encoding_t)); + enc = (ike_sa_id_encoding_t*)(this->buf.ptr + this->buf.len); + this->buf.len += sizeof(ike_sa_id_encoding_t); + enc->initiator = id->is_initiator(id); + enc->initiator_spi = id->get_initiator_spi(id); + enc->responder_spi = id->get_responder_spi(id); + break; + } + /* identification_t* */ + case HA_LOCAL_ID: + case HA_REMOTE_ID: + { + identification_encoding_t *enc; + identification_t *id; + chunk_t data; + + id = va_arg(args, identification_t*); + data = id->get_encoding(id); + check_buf(this, sizeof(identification_encoding_t) + data.len); + enc = (identification_encoding_t*)(this->buf.ptr + this->buf.len); + this->buf.len += sizeof(identification_encoding_t) + data.len; + enc->type = id->get_type(id); + enc->len = data.len; + memcpy(enc->encoding, data.ptr, data.len); + break; + } + /* host_t* */ + case HA_LOCAL_ADDR: + case HA_REMOTE_ADDR: + case HA_LOCAL_VIP: + case HA_REMOTE_VIP: + case HA_ADDITIONAL_ADDR: + { + host_encoding_t *enc; + host_t *host; + chunk_t data; + + host = va_arg(args, host_t*); + data = host->get_address(host); + check_buf(this, sizeof(host_encoding_t) + data.len); + enc = (host_encoding_t*)(this->buf.ptr + this->buf.len); + this->buf.len += sizeof(host_encoding_t) + data.len; + enc->family = host->get_family(host); + enc->port = htons(host->get_port(host)); + memcpy(enc->encoding, data.ptr, data.len); + break; + } + /* char* */ + case HA_CONFIG_NAME: + { + char *str; + + str = va_arg(args, char*); + len = strlen(str) + 1; + check_buf(this, len); + memcpy(this->buf.ptr + this->buf.len, str, len); + this->buf.len += len; + break; + } + /* u_int8_t */ + case HA_IPSEC_MODE: + case HA_IPCOMP: + { + u_int8_t val; + + val = va_arg(args, u_int); + check_buf(this, sizeof(val)); + this->buf.ptr[this->buf.len] = val; + this->buf.len += sizeof(val); + break; + } + /* u_int16_t */ + case HA_ALG_PRF: + case HA_ALG_OLD_PRF: + case HA_ALG_ENCR: + case HA_ALG_ENCR_LEN: + case HA_ALG_INTEG: + case HA_INBOUND_CPI: + case HA_OUTBOUND_CPI: + case HA_SEGMENT: + { + u_int16_t val; + + val = va_arg(args, u_int); + check_buf(this, sizeof(val)); + *(u_int16_t*)(this->buf.ptr + this->buf.len) = htons(val); + this->buf.len += sizeof(val); + break; + } + /** u_int32_t */ + case HA_CONDITIONS: + case HA_EXTENSIONS: + case HA_INBOUND_SPI: + case HA_OUTBOUND_SPI: + case HA_INITIATE_MID: + case HA_RESPOND_MID: + { + u_int32_t val; + + val = va_arg(args, u_int); + check_buf(this, sizeof(val)); + *(u_int32_t*)(this->buf.ptr + this->buf.len) = htonl(val); + this->buf.len += sizeof(val); + break; + } + /** chunk_t */ + case HA_NONCE_I: + case HA_NONCE_R: + case HA_SECRET: + case HA_OLD_SKD: + { + chunk_t chunk; + + chunk = va_arg(args, chunk_t); + check_buf(this, chunk.len + sizeof(u_int16_t)); + *(u_int16_t*)(this->buf.ptr + this->buf.len) = htons(chunk.len); + memcpy(this->buf.ptr + this->buf.len + sizeof(u_int16_t), + chunk.ptr, chunk.len); + this->buf.len += chunk.len + sizeof(u_int16_t);; + break; + } + /** traffic_selector_t */ + case HA_LOCAL_TS: + case HA_REMOTE_TS: + { + ts_encoding_t *enc; + traffic_selector_t *ts; + chunk_t data; + + ts = va_arg(args, traffic_selector_t*); + data = chunk_cata("cc", ts->get_from_address(ts), + ts->get_to_address(ts)); + check_buf(this, sizeof(ts_encoding_t) + data.len); + enc = (ts_encoding_t*)(this->buf.ptr + this->buf.len); + this->buf.len += sizeof(ts_encoding_t) + data.len; + enc->type = ts->get_type(ts); + enc->protocol = ts->get_protocol(ts); + enc->from_port = htons(ts->get_from_port(ts)); + enc->to_port = htons(ts->get_to_port(ts)); + enc->dynamic = ts->is_dynamic(ts); + memcpy(enc->encoding, data.ptr, data.len); + break; + } + default: + { + DBG1(DBG_CFG, "unable to encode, attribute %d unknown", attribute); + this->buf.len -= sizeof(u_int8_t); + break; + } + } + va_end(args); +} + +/** + * Attribute enumerator implementation + */ +typedef struct { + /** implementes enumerator_t */ + enumerator_t public; + /** position in message */ + chunk_t buf; + /** cleanup handler of current element, if any */ + void (*cleanup)(void* data); + /** data to pass to cleanup handler */ + void *cleanup_data; +} attribute_enumerator_t; + +/** + * Implementation of create_attribute_enumerator().enumerate + */ +static bool attribute_enumerate(attribute_enumerator_t *this, + ha_message_attribute_t *attr_out, + ha_message_value_t *value) +{ + ha_message_attribute_t attr; + + if (this->cleanup) + { + this->cleanup(this->cleanup_data); + this->cleanup = NULL; + } + if (this->buf.len < 1) + { + return FALSE; + } + attr = this->buf.ptr[0]; + this->buf = chunk_skip(this->buf, 1); + switch (attr) + { + /* ike_sa_id_t* */ + case HA_IKE_ID: + case HA_IKE_REKEY_ID: + { + ike_sa_id_encoding_t *enc; + + if (this->buf.len < sizeof(ike_sa_id_encoding_t)) + { + return FALSE; + } + enc = (ike_sa_id_encoding_t*)(this->buf.ptr); + value->ike_sa_id = ike_sa_id_create(enc->initiator_spi, + enc->responder_spi, enc->initiator); + *attr_out = attr; + this->cleanup = (void*)value->ike_sa_id->destroy; + this->cleanup_data = value->ike_sa_id; + this->buf = chunk_skip(this->buf, sizeof(ike_sa_id_encoding_t)); + return TRUE; + } + /* identification_t* */ + case HA_LOCAL_ID: + case HA_REMOTE_ID: + { + identification_encoding_t *enc; + + enc = (identification_encoding_t*)(this->buf.ptr); + if (this->buf.len < sizeof(identification_encoding_t) || + this->buf.len < sizeof(identification_encoding_t) + enc->len) + { + return FALSE; + } + value->id = identification_create_from_encoding(enc->type, + chunk_create(enc->encoding, enc->len)); + *attr_out = attr; + this->cleanup = (void*)value->id->destroy; + this->cleanup_data = value->id; + this->buf = chunk_skip(this->buf, + sizeof(identification_encoding_t) + enc->len); + return TRUE; + } + /* host_t* */ + case HA_LOCAL_ADDR: + case HA_REMOTE_ADDR: + case HA_LOCAL_VIP: + case HA_REMOTE_VIP: + case HA_ADDITIONAL_ADDR: + { + host_encoding_t *enc; + + enc = (host_encoding_t*)(this->buf.ptr); + if (this->buf.len < sizeof(host_encoding_t)) + { + return FALSE; + } + value->host = host_create_from_chunk(enc->family, + chunk_create(enc->encoding, + this->buf.len - sizeof(host_encoding_t)), + ntohs(enc->port)); + if (!value->host) + { + return FALSE; + } + *attr_out = attr; + this->cleanup = (void*)value->host->destroy; + this->cleanup_data = value->host; + this->buf = chunk_skip(this->buf, sizeof(host_encoding_t) + + value->host->get_address(value->host).len); + return TRUE; + } + /* char* */ + case HA_CONFIG_NAME: + { + size_t len; + + len = strnlen(this->buf.ptr, this->buf.len); + if (len >= this->buf.len) + { + return FALSE; + } + value->str = this->buf.ptr; + *attr_out = attr; + this->buf = chunk_skip(this->buf, len + 1); + return TRUE; + } + /* u_int8_t */ + case HA_IPSEC_MODE: + case HA_IPCOMP: + { + if (this->buf.len < sizeof(u_int8_t)) + { + return FALSE; + } + value->u8 = *(u_int8_t*)this->buf.ptr; + *attr_out = attr; + this->buf = chunk_skip(this->buf, sizeof(u_int8_t)); + return TRUE; + } + /** u_int16_t */ + case HA_ALG_PRF: + case HA_ALG_OLD_PRF: + case HA_ALG_ENCR: + case HA_ALG_ENCR_LEN: + case HA_ALG_INTEG: + case HA_INBOUND_CPI: + case HA_OUTBOUND_CPI: + case HA_SEGMENT: + { + if (this->buf.len < sizeof(u_int16_t)) + { + return FALSE; + } + value->u16 = ntohs(*(u_int16_t*)this->buf.ptr); + *attr_out = attr; + this->buf = chunk_skip(this->buf, sizeof(u_int16_t)); + return TRUE; + } + /** u_int32_t */ + case HA_CONDITIONS: + case HA_EXTENSIONS: + case HA_INBOUND_SPI: + case HA_OUTBOUND_SPI: + case HA_INITIATE_MID: + case HA_RESPOND_MID: + { + if (this->buf.len < sizeof(u_int32_t)) + { + return FALSE; + } + value->u32 = ntohl(*(u_int32_t*)this->buf.ptr); + *attr_out = attr; + this->buf = chunk_skip(this->buf, sizeof(u_int32_t)); + return TRUE; + } + /** chunk_t */ + case HA_NONCE_I: + case HA_NONCE_R: + case HA_SECRET: + case HA_OLD_SKD: + { + size_t len; + + if (this->buf.len < sizeof(u_int16_t)) + { + return FALSE; + } + len = ntohs(*(u_int16_t*)this->buf.ptr); + this->buf = chunk_skip(this->buf, sizeof(u_int16_t)); + if (this->buf.len < len) + { + return FALSE; + } + value->chunk.len = len; + value->chunk.ptr = this->buf.ptr; + *attr_out = attr; + this->buf = chunk_skip(this->buf, len); + return TRUE; + } + case HA_LOCAL_TS: + case HA_REMOTE_TS: + { + ts_encoding_t *enc; + host_t *host; + int addr_len; + + enc = (ts_encoding_t*)(this->buf.ptr); + if (this->buf.len < sizeof(ts_encoding_t)) + { + return FALSE; + } + switch (enc->type) + { + case TS_IPV4_ADDR_RANGE: + addr_len = 4; + if (this->buf.len < sizeof(ts_encoding_t) + 2 * addr_len) + { + return FALSE; + } + break; + case TS_IPV6_ADDR_RANGE: + addr_len = 16; + if (this->buf.len < sizeof(ts_encoding_t) + 2 * addr_len) + { + return FALSE; + } + break; + default: + return FALSE; + } + if (enc->dynamic) + { + host = host_create_from_chunk(0, + chunk_create(enc->encoding, addr_len), 0); + if (!host) + { + return FALSE; + } + value->ts = traffic_selector_create_dynamic(enc->protocol, + ntohs(enc->from_port), ntohs(enc->to_port)); + value->ts->set_address(value->ts, host); + host->destroy(host); + } + else + { + value->ts = traffic_selector_create_from_bytes(enc->protocol, + enc->type, chunk_create(enc->encoding, addr_len), + ntohs(enc->from_port), + chunk_create(enc->encoding + addr_len, addr_len), + ntohs(enc->to_port)); + if (!value->ts) + { + return FALSE; + } + } + *attr_out = attr; + this->cleanup = (void*)value->ts->destroy; + this->cleanup_data = value->ts; + this->buf = chunk_skip(this->buf, sizeof(ts_encoding_t) + + addr_len * 2); + return TRUE; + } + default: + { + return FALSE; + } + } +} + +/** + * Implementation of create_attribute_enumerator().destroy + */ +static void enum_destroy(attribute_enumerator_t *this) +{ + if (this->cleanup) + { + this->cleanup(this->cleanup_data); + } + free(this); +} + +/** + * Implementation of ha_message_t.create_attribute_enumerator + */ +static enumerator_t* create_attribute_enumerator(private_ha_message_t *this) +{ + attribute_enumerator_t *e = malloc_thing(attribute_enumerator_t); + + e->public.enumerate = (void*)attribute_enumerate; + e->public.destroy = (void*)enum_destroy; + + e->buf = chunk_skip(this->buf, 2); + e->cleanup = NULL; + e->cleanup_data = NULL; + + return &e->public; +} + +/** + * Implementation of ha_message_t.get_encoding + */ +static chunk_t get_encoding(private_ha_message_t *this) +{ + return this->buf; +} + +/** + * Implementation of ha_message_t.destroy. + */ +static void destroy(private_ha_message_t *this) +{ + free(this->buf.ptr); + free(this); +} + + +static private_ha_message_t *ha_message_create_generic() +{ + private_ha_message_t *this = malloc_thing(private_ha_message_t); + + this->public.get_type = (ha_message_type_t(*)(ha_message_t*))get_type; + this->public.add_attribute = (void(*)(ha_message_t*, ha_message_attribute_t attribute, ...))add_attribute; + this->public.create_attribute_enumerator = (enumerator_t*(*)(ha_message_t*))create_attribute_enumerator; + this->public.get_encoding = (chunk_t(*)(ha_message_t*))get_encoding; + this->public.destroy = (void(*)(ha_message_t*))destroy; + + return this; +} + +/** + * See header + */ +ha_message_t *ha_message_create(ha_message_type_t type) +{ + private_ha_message_t *this = ha_message_create_generic(); + + this->allocated = ALLOCATION_BLOCK; + this->buf.ptr = malloc(this->allocated); + this->buf.len = 2; + this->buf.ptr[0] = HA_MESSAGE_VERSION; + this->buf.ptr[1] = type; + + return &this->public; +} + +/** + * See header + */ +ha_message_t *ha_message_parse(chunk_t data) +{ + private_ha_message_t *this; + + if (data.len < 2) + { + DBG1(DBG_CFG, "HA message too short"); + return NULL; + } + if (data.ptr[0] != HA_MESSAGE_VERSION) + { + DBG1(DBG_CFG, "HA message has version %d, expected %d", + data.ptr[0], HA_MESSAGE_VERSION); + return NULL; + } + + this = ha_message_create_generic(); + this->buf = chunk_clone(data); + this->allocated = this->buf.len; + + return &this->public; +} + diff --git a/src/libcharon/plugins/ha/ha_message.h b/src/libcharon/plugins/ha/ha_message.h new file mode 100644 index 000000000..b2bc23724 --- /dev/null +++ b/src/libcharon/plugins/ha/ha_message.h @@ -0,0 +1,205 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup ha_message ha_message + * @{ @ingroup ha + */ + +#ifndef HA_MESSAGE_H_ +#define HA_MESSAGE_H_ + +#include <library.h> +#include <utils/host.h> +#include <utils/identification.h> +#include <sa/ike_sa_id.h> +#include <selectors/traffic_selector.h> + +/** + * Protocol version of this implementation + */ +#define HA_MESSAGE_VERSION 1 + +typedef struct ha_message_t ha_message_t; +typedef enum ha_message_type_t ha_message_type_t; +typedef enum ha_message_attribute_t ha_message_attribute_t; +typedef union ha_message_value_t ha_message_value_t; + +/** + * Type of a HA message + */ +enum ha_message_type_t { + /** add a completely new IKE_SA */ + HA_IKE_ADD = 1, + /** update an existing IKE_SA (message IDs, address update, ...) */ + HA_IKE_UPDATE, + /** delete an existing IKE_SA */ + HA_IKE_DELETE, + /** add a new CHILD_SA */ + HA_CHILD_ADD, + /** delete an existing CHILD_SA */ + HA_CHILD_DELETE, + /** segments the sending node is giving up */ + HA_SEGMENT_DROP, + /** segments the sending node is taking over */ + HA_SEGMENT_TAKE, + /** status with the segments the sending node is currently serving */ + HA_STATUS, + /** segments the receiving node is requested to resync */ + HA_RESYNC, +}; + +/** + * Type of attributes contained in a message + */ +enum ha_message_attribute_t { + /** ike_sa_id_t*, to identify IKE_SA */ + HA_IKE_ID = 1, + /** ike_Sa_id_t*, identifies IKE_SA which gets rekeyed */ + HA_IKE_REKEY_ID, + /** identification_t*, local identity */ + HA_LOCAL_ID, + /** identification_t*, remote identity */ + HA_REMOTE_ID, + /** host_t*, local address */ + HA_LOCAL_ADDR, + /** host_t*, remote address */ + HA_REMOTE_ADDR, + /** char*, name of configuration */ + HA_CONFIG_NAME, + /** u_int32_t, bitset of ike_condition_t */ + HA_CONDITIONS, + /** u_int32_t, bitset of ike_extension_t */ + HA_EXTENSIONS, + /** host_t*, local virtual IP */ + HA_LOCAL_VIP, + /** host_t*, remote virtual IP */ + HA_REMOTE_VIP, + /** host_t*, additional MOBIKE peer address */ + HA_ADDITIONAL_ADDR, + /** chunk_t, initiators nonce */ + HA_NONCE_I, + /** chunk_t, responders nonce */ + HA_NONCE_R, + /** chunk_t, diffie hellman shared secret */ + HA_SECRET, + /** chunk_t, SKd of old SA if rekeying */ + HA_OLD_SKD, + /** u_int16_t, pseudo random function */ + HA_ALG_PRF, + /** u_int16_t, old pseudo random function if rekeying */ + HA_ALG_OLD_PRF, + /** u_int16_t, encryption algorithm */ + HA_ALG_ENCR, + /** u_int16_t, encryption key size in bytes */ + HA_ALG_ENCR_LEN, + /** u_int16_t, integrity protection algorithm */ + HA_ALG_INTEG, + /** u_int8_t, IPsec mode, TUNNEL|TRANSPORT|... */ + HA_IPSEC_MODE, + /** u_int8_t, IPComp protocol */ + HA_IPCOMP, + /** u_int32_t, inbound security parameter index */ + HA_INBOUND_SPI, + /** u_int32_t, outbound security parameter index */ + HA_OUTBOUND_SPI, + /** u_int16_t, inbound security parameter index */ + HA_INBOUND_CPI, + /** u_int16_t, outbound security parameter index */ + HA_OUTBOUND_CPI, + /** traffic_selector_t*, local traffic selector */ + HA_LOCAL_TS, + /** traffic_selector_t*, remote traffic selector */ + HA_REMOTE_TS, + /** u_int32_t, initiating message ID */ + HA_INITIATE_MID, + /** u_int32_t, responding message ID */ + HA_RESPOND_MID, + /** u_int16_t, HA segment */ + HA_SEGMENT, +}; + +/** + * Union to enumerate typed attributes in a message + */ +union ha_message_value_t { + u_int8_t u8; + u_int16_t u16; + u_int32_t u32; + char *str; + chunk_t chunk; + ike_sa_id_t *ike_sa_id; + identification_t *id; + host_t *host; + traffic_selector_t *ts; +}; + +/** + * Abstracted message passed between nodes in a HA cluster. + */ +struct ha_message_t { + + /** + * Get the type of the message. + * + * @return message type + */ + ha_message_type_t (*get_type)(ha_message_t *this); + + /** + * Add an attribute to a message. + * + * @param attribute attribute type to add + * @param ... attribute specific data + */ + void (*add_attribute)(ha_message_t *this, + ha_message_attribute_t attribute, ...); + + /** + * Create an enumerator over all attributes in a message. + * + * @return enumerator over attribute, ha_message_value_t + */ + enumerator_t* (*create_attribute_enumerator)(ha_message_t *this); + + /** + * Get the message in a encoded form. + * + * @return chunk pointing to internal data + */ + chunk_t (*get_encoding)(ha_message_t *this); + + /** + * Destroy a ha_message_t. + */ + void (*destroy)(ha_message_t *this); +}; + +/** + * Create a new ha_message instance, ready for adding attributes + * + * @param version protocol version to create a message from + * @param type type of the message + */ +ha_message_t *ha_message_create(ha_message_type_t type); + +/** + * Create a ha_message from encoded data. + * + * @param data encoded message data + */ +ha_message_t *ha_message_parse(chunk_t data); + +#endif /* HA_MESSAGE_ @}*/ diff --git a/src/libcharon/plugins/ha/ha_plugin.c b/src/libcharon/plugins/ha/ha_plugin.c new file mode 100644 index 000000000..ea255c8ab --- /dev/null +++ b/src/libcharon/plugins/ha/ha_plugin.c @@ -0,0 +1,163 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "ha_plugin.h" +#include "ha_ike.h" +#include "ha_child.h" +#include "ha_socket.h" +#include "ha_tunnel.h" +#include "ha_dispatcher.h" +#include "ha_segments.h" +#include "ha_ctl.h" + +#include <daemon.h> +#include <config/child_cfg.h> + +typedef struct private_ha_plugin_t private_ha_plugin_t; + +/** + * private data of ha plugin + */ +struct private_ha_plugin_t { + + /** + * implements plugin interface + */ + ha_plugin_t public; + + /** + * Communication socket + */ + ha_socket_t *socket; + + /** + * Tunnel securing sync messages. + */ + ha_tunnel_t *tunnel; + + /** + * IKE_SA synchronization + */ + ha_ike_t *ike; + + /** + * CHILD_SA synchronization + */ + ha_child_t *child; + + /** + * Dispatcher to process incoming messages + */ + ha_dispatcher_t *dispatcher; + + /** + * Active/Passive segment management + */ + ha_segments_t *segments; + + /** + * Interface to control segments at kernel level + */ + ha_kernel_t *kernel; + + /** + * Segment control interface via FIFO + */ + ha_ctl_t *ctl; +}; + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(private_ha_plugin_t *this) +{ + DESTROY_IF(this->ctl); + charon->bus->remove_listener(charon->bus, &this->segments->listener); + charon->bus->remove_listener(charon->bus, &this->ike->listener); + charon->bus->remove_listener(charon->bus, &this->child->listener); + this->ike->destroy(this->ike); + this->child->destroy(this->child); + this->dispatcher->destroy(this->dispatcher); + this->segments->destroy(this->segments); + this->kernel->destroy(this->kernel); + this->socket->destroy(this->socket); + DESTROY_IF(this->tunnel); + free(this); +} + +/** + * Plugin constructor + */ +plugin_t *ha_plugin_create() +{ + private_ha_plugin_t *this; + char *local, *remote, *secret; + u_int count; + bool fifo, monitor, resync; + + local = lib->settings->get_str(lib->settings, + "charon.plugins.ha.local", NULL); + remote = lib->settings->get_str(lib->settings, + "charon.plugins.ha.remote", NULL); + secret = lib->settings->get_str(lib->settings, + "charon.plugins.ha.secret", NULL); + fifo = lib->settings->get_bool(lib->settings, + "charon.plugins.ha.fifo_interface", TRUE); + monitor = lib->settings->get_bool(lib->settings, + "charon.plugins.ha.monitor", TRUE); + resync = lib->settings->get_bool(lib->settings, + "charon.plugins.ha.resync", TRUE); + count = min(SEGMENTS_MAX, lib->settings->get_int(lib->settings, + "charon.plugins.ha.segment_count", 1)); + if (!local || !remote) + { + DBG1(DBG_CFG, "HA config misses local/remote address"); + return NULL; + } + + this = malloc_thing(private_ha_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + this->tunnel = NULL; + this->ctl = NULL; + + if (secret) + { + this->tunnel = ha_tunnel_create(local, remote, secret); + } + this->socket = ha_socket_create(local, remote); + if (!this->socket) + { + DESTROY_IF(this->tunnel); + free(this); + return NULL; + } + this->kernel = ha_kernel_create(count); + this->segments = ha_segments_create(this->socket, this->kernel, this->tunnel, + count, strcmp(local, remote) > 0, monitor, resync); + if (fifo) + { + this->ctl = ha_ctl_create(this->segments); + } + this->dispatcher = ha_dispatcher_create(this->socket, this->segments); + this->ike = ha_ike_create(this->socket, this->tunnel); + this->child = ha_child_create(this->socket, this->tunnel); + charon->bus->add_listener(charon->bus, &this->segments->listener); + charon->bus->add_listener(charon->bus, &this->ike->listener); + charon->bus->add_listener(charon->bus, &this->child->listener); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/ha/ha_plugin.h b/src/libcharon/plugins/ha/ha_plugin.h new file mode 100644 index 000000000..1ae2fe6dd --- /dev/null +++ b/src/libcharon/plugins/ha/ha_plugin.h @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup ha ha + * @ingroup cplugins + * + * @defgroup ha_plugin ha_plugin + * @{ @ingroup ha + */ + +#ifndef HA_PLUGIN_H_ +#define HA_PLUGIN_H_ + +#include <plugins/plugin.h> + +/** + * UDP port we use for communication + */ +#define HA_PORT 4510 + +typedef struct ha_plugin_t ha_plugin_t; + +/** + * Plugin to synchronize state in a high availability cluster. + */ +struct ha_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /* HA_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/ha/ha_segments.c b/src/libcharon/plugins/ha/ha_segments.c new file mode 100644 index 000000000..2199671fc --- /dev/null +++ b/src/libcharon/plugins/ha/ha_segments.c @@ -0,0 +1,503 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "ha_segments.h" + +#include <pthread.h> + +#include <threading/mutex.h> +#include <threading/condvar.h> +#include <utils/linked_list.h> +#include <processing/jobs/callback_job.h> + +#define HEARTBEAT_DELAY 1000 +#define HEARTBEAT_TIMEOUT 2100 + +typedef struct private_ha_segments_t private_ha_segments_t; + +/** + * Private data of an ha_segments_t object. + */ +struct private_ha_segments_t { + + /** + * Public ha_segments_t interface. + */ + ha_segments_t public; + + /** + * communication socket + */ + ha_socket_t *socket; + + /** + * Sync tunnel, if any + */ + ha_tunnel_t *tunnel; + + /** + * Interface to control segments at kernel level + */ + ha_kernel_t *kernel; + + /** + * Mutex to lock segment manipulation + */ + mutex_t *mutex; + + /** + * Condvar to wait for heartbeats + */ + condvar_t *condvar; + + /** + * Job checking for heartbeats + */ + callback_job_t *job; + + /** + * Total number of ClusterIP segments + */ + u_int count; + + /** + * mask of active segments + */ + segment_mask_t active; + + /** + * Node number + */ + u_int node; +}; + +/** + * Log currently active segments + */ +static void log_segments(private_ha_segments_t *this, bool activated, + u_int segment) +{ + char buf[64] = "none", *pos = buf; + int i; + bool first = TRUE; + + for (i = 1; i <= this->count; i++) + { + if (this->active & SEGMENTS_BIT(i)) + { + if (first) + { + first = FALSE; + } + else + { + pos += snprintf(pos, buf + sizeof(buf) - pos, ","); + } + pos += snprintf(pos, buf + sizeof(buf) - pos, "%d", i); + } + } + DBG1(DBG_CFG, "HA segment %d %sactivated, now active: %s", + segment, activated ? "" : "de", buf); +} + +/** + * Enable/Disable a specific segment + */ +static void enable_disable(private_ha_segments_t *this, u_int segment, + bool enable, bool notify) +{ + ike_sa_t *ike_sa; + enumerator_t *enumerator; + ike_sa_state_t old, new; + ha_message_t *message = NULL; + ha_message_type_t type; + bool changes = FALSE; + + if (segment > this->count) + { + return; + } + + if (enable) + { + old = IKE_PASSIVE; + new = IKE_ESTABLISHED; + type = HA_SEGMENT_TAKE; + if (!(this->active & SEGMENTS_BIT(segment))) + { + this->active |= SEGMENTS_BIT(segment); + this->kernel->activate(this->kernel, segment); + changes = TRUE; + } + } + else + { + old = IKE_ESTABLISHED; + new = IKE_PASSIVE; + type = HA_SEGMENT_DROP; + if (this->active & SEGMENTS_BIT(segment)) + { + this->active &= ~SEGMENTS_BIT(segment); + this->kernel->deactivate(this->kernel, segment); + changes = TRUE; + } + } + + if (changes) + { + enumerator = charon->ike_sa_manager->create_enumerator(charon->ike_sa_manager); + while (enumerator->enumerate(enumerator, &ike_sa)) + { + if (ike_sa->get_state(ike_sa) != old) + { + continue; + } + if (this->tunnel && this->tunnel->is_sa(this->tunnel, ike_sa)) + { + continue; + } + if (this->kernel->in_segment(this->kernel, + ike_sa->get_other_host(ike_sa), segment)) + { + ike_sa->set_state(ike_sa, new); + } + } + enumerator->destroy(enumerator); + log_segments(this, enable, segment); + } + + if (notify) + { + message = ha_message_create(type); + message->add_attribute(message, HA_SEGMENT, segment); + this->socket->push(this->socket, message); + } +} + +/** + * Enable/Disable all or a specific segment, do locking + */ +static void enable_disable_all(private_ha_segments_t *this, u_int segment, + bool enable, bool notify) +{ + int i; + + this->mutex->lock(this->mutex); + if (segment == 0) + { + for (i = 1; i <= this->count; i++) + { + enable_disable(this, i, enable, notify); + } + } + else + { + enable_disable(this, segment, enable, notify); + } + this->mutex->unlock(this->mutex); +} + +/** + * Implementation of ha_segments_t.activate + */ +static void activate(private_ha_segments_t *this, u_int segment, bool notify) +{ + enable_disable_all(this, segment, TRUE, notify); +} + +/** + * Implementation of ha_segments_t.deactivate + */ +static void deactivate(private_ha_segments_t *this, u_int segment, bool notify) +{ + enable_disable_all(this, segment, FALSE, notify); +} + +/** + * Rekey all children of an IKE_SA + */ +static status_t rekey_children(ike_sa_t *ike_sa) +{ + iterator_t *iterator; + child_sa_t *child_sa; + status_t status = SUCCESS; + + iterator = ike_sa->create_child_sa_iterator(ike_sa); + while (iterator->iterate(iterator, (void**)&child_sa)) + { + DBG1(DBG_CFG, "resyncing CHILD_SA"); + status = ike_sa->rekey_child_sa(ike_sa, child_sa->get_protocol(child_sa), + child_sa->get_spi(child_sa, TRUE)); + if (status == DESTROY_ME) + { + break; + } + } + iterator->destroy(iterator); + return status; +} + +/** + * Implementation of ha_segments_t.resync + */ +static void resync(private_ha_segments_t *this, u_int segment) +{ + ike_sa_t *ike_sa; + enumerator_t *enumerator; + linked_list_t *list; + ike_sa_id_t *id; + + list = linked_list_create(); + this->mutex->lock(this->mutex); + + if (segment > 0 && segment <= this->count) + { + DBG1(DBG_CFG, "resyncing HA segment %d", segment); + + /* we do the actual rekeying in a seperate loop to avoid rekeying + * an SA twice. */ + enumerator = charon->ike_sa_manager->create_enumerator( + charon->ike_sa_manager); + while (enumerator->enumerate(enumerator, &ike_sa)) + { + if (ike_sa->get_state(ike_sa) == IKE_ESTABLISHED && + this->kernel->in_segment(this->kernel, + ike_sa->get_other_host(ike_sa), segment)) + { + id = ike_sa->get_id(ike_sa); + list->insert_last(list, id->clone(id)); + } + } + enumerator->destroy(enumerator); + } + this->mutex->unlock(this->mutex); + + while (list->remove_last(list, (void**)&id) == SUCCESS) + { + ike_sa = charon->ike_sa_manager->checkout(charon->ike_sa_manager, id); + id->destroy(id); + if (ike_sa) + { + DBG1(DBG_CFG, "resyncing IKE_SA"); + if (ike_sa->rekey(ike_sa) != DESTROY_ME) + { + if (rekey_children(ike_sa) != DESTROY_ME) + { + charon->ike_sa_manager->checkin( + charon->ike_sa_manager, ike_sa); + continue; + } + } + charon->ike_sa_manager->checkin_and_destroy( + charon->ike_sa_manager, ike_sa); + } + } + list->destroy(list); +} + +/** + * Implementation of listener_t.alert + */ +static bool alert_hook(private_ha_segments_t *this, ike_sa_t *ike_sa, + alert_t alert, va_list args) +{ + if (alert == ALERT_SHUTDOWN_SIGNAL) + { + deactivate(this, 0, TRUE); + } + return TRUE; +} + +/** + * Request a resync of all segments + */ +static job_requeue_t request_resync(private_ha_segments_t *this) +{ + ha_message_t *message; + int i; + + message = ha_message_create(HA_RESYNC); + for (i = 1; i <= this->count; i++) + { + message->add_attribute(message, HA_SEGMENT, i); + } + this->socket->push(this->socket, message); + return JOB_REQUEUE_NONE; +} + +/** + * Monitor heartbeat activity of remote node + */ +static job_requeue_t watchdog(private_ha_segments_t *this) +{ + int oldstate; + bool timeout; + + this->mutex->lock(this->mutex); + pthread_cleanup_push((void*)this->mutex->unlock, this->mutex); + pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &oldstate); + timeout = this->condvar->timed_wait(this->condvar, this->mutex, + HEARTBEAT_TIMEOUT); + pthread_setcancelstate(oldstate, NULL); + pthread_cleanup_pop(TRUE); + if (timeout) + { + DBG1(DBG_CFG, "no heartbeat received, taking all segments"); + activate(this, 0, TRUE); + /* disable heartbeat detection util we get one */ + this->job = NULL; + return JOB_REQUEUE_NONE; + } + return JOB_REQUEUE_DIRECT; +} + +/** + * Start the heartbeat detection thread + */ +static void start_watchdog(private_ha_segments_t *this) +{ + this->job = callback_job_create((callback_job_cb_t)watchdog, + this, NULL, NULL); + charon->processor->queue_job(charon->processor, (job_t*)this->job); +} + +/** + * Implementation of ha_segments_t.handle_status + */ +static void handle_status(private_ha_segments_t *this, segment_mask_t mask) +{ + segment_mask_t missing; + int i; + + this->mutex->lock(this->mutex); + + missing = ~(this->active | mask); + + for (i = 1; i <= this->count; i++) + { + if (missing & SEGMENTS_BIT(i)) + { + if (this->node == i % 2) + { + DBG1(DBG_CFG, "HA segment %d was not handled, taking", i); + enable_disable(this, i, TRUE, TRUE); + } + else + { + DBG1(DBG_CFG, "HA segment %d was not handled, dropping", i); + enable_disable(this, i, FALSE, TRUE); + } + } + } + + this->mutex->unlock(this->mutex); + this->condvar->signal(this->condvar); + + if (!this->job) + { + DBG1(DBG_CFG, "received heartbeat, reenabling watchdog"); + start_watchdog(this); + } +} + +/** + * Send a status message with our active segments + */ +static job_requeue_t send_status(private_ha_segments_t *this) +{ + ha_message_t *message; + int i; + + message = ha_message_create(HA_STATUS); + + for (i = 1; i <= this->count; i++) + { + if (this->active & SEGMENTS_BIT(i)) + { + message->add_attribute(message, HA_SEGMENT, i); + } + } + + this->socket->push(this->socket, message); + + /* schedule next invocation */ + charon->scheduler->schedule_job_ms(charon->scheduler, (job_t*) + callback_job_create((callback_job_cb_t) + send_status, this, NULL, NULL), + HEARTBEAT_DELAY); + + return JOB_REQUEUE_NONE; +} + +/** + * Implementation of ha_segments_t.destroy. + */ +static void destroy(private_ha_segments_t *this) +{ + if (this->job) + { + this->job->cancel(this->job); + } + this->mutex->destroy(this->mutex); + this->condvar->destroy(this->condvar); + free(this); +} + +/** + * See header + */ +ha_segments_t *ha_segments_create(ha_socket_t *socket, ha_kernel_t *kernel, + ha_tunnel_t *tunnel, u_int count, u_int node, + bool monitor, bool sync) +{ + private_ha_segments_t *this = malloc_thing(private_ha_segments_t); + + memset(&this->public.listener, 0, sizeof(listener_t)); + this->public.listener.alert = (bool(*)(listener_t*, ike_sa_t *, alert_t, va_list))alert_hook; + this->public.activate = (void(*)(ha_segments_t*, u_int segment,bool))activate; + this->public.deactivate = (void(*)(ha_segments_t*, u_int segment,bool))deactivate; + this->public.resync = (void(*)(ha_segments_t*, u_int segment))resync; + this->public.handle_status = (void(*)(ha_segments_t*, segment_mask_t mask))handle_status; + this->public.destroy = (void(*)(ha_segments_t*))destroy; + + this->socket = socket; + this->tunnel = tunnel; + this->kernel = kernel; + this->mutex = mutex_create(MUTEX_TYPE_DEFAULT); + this->condvar = condvar_create(CONDVAR_TYPE_DEFAULT); + this->count = count; + this->node = node; + this->job = NULL; + + /* initially all segments are deactivated */ + this->active = 0; + + if (monitor) + { + send_status(this); + start_watchdog(this); + } + + if (sync) + { + /* request a resync as soon as we are up */ + charon->processor->queue_job(charon->processor, (job_t*) + callback_job_create((callback_job_cb_t)request_resync, + this, NULL, NULL)); + } + + return &this->public; +} + diff --git a/src/libcharon/plugins/ha/ha_segments.h b/src/libcharon/plugins/ha/ha_segments.h new file mode 100644 index 000000000..6d1cd5441 --- /dev/null +++ b/src/libcharon/plugins/ha/ha_segments.h @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup ha_segments ha_segments + * @{ @ingroup ha + */ + +#ifndef HA_SEGMENTS_H_ +#define HA_SEGMENTS_H_ + +#include <daemon.h> + +typedef struct ha_segments_t ha_segments_t; + +typedef u_int16_t segment_mask_t; + +/** + * maximum number of segments + */ +#define SEGMENTS_MAX (sizeof(segment_mask_t)*8) + +/** + * Get the bit in the mask of a segment + */ +#define SEGMENTS_BIT(segment) (0x01 << (segment - 1)) + +#include "ha_socket.h" +#include "ha_tunnel.h" +#include "ha_kernel.h" + +/** + * Segmentation of peers into active and passive. + */ +struct ha_segments_t { + + /** + * Implements listener interface to catch daemon shutdown. + */ + listener_t listener; + + /** + * Activate a set of IKE_SAs identified by a segment. + * + * @param segment numerical segment to takeover, 0 for all + * @param notify wheter to notify other nodes about activation + */ + void (*activate)(ha_segments_t *this, u_int segment, bool notify); + + /** + * Deactivate a set of IKE_SAs identified by a segment. + * + * @param segment numerical segment to takeover, 0 for all + * @param notify wheter to notify other nodes about deactivation + */ + void (*deactivate)(ha_segments_t *this, u_int segment, bool notify); + + /** + * Resync an active segment. + * + * To reintegrade a node into the cluster, resynchronization is reqired. + * IKE_SAs and CHILD_SAs are synced automatically during rekeying. A call + * to this method enforces a rekeying immediately sync all state of a + * segment. + * + * @param segment segment to resync + */ + void (*resync)(ha_segments_t *this, u_int segment); + + /** + * Handle a status message from the remote node. + * + * @param mask segments the remote node is serving actively + */ + void (*handle_status)(ha_segments_t *this, segment_mask_t mask); + + /** + * Destroy a ha_segments_t. + */ + void (*destroy)(ha_segments_t *this); +}; + +/** + * Create a ha_segments instance. + * + * @param socket socket to communicate segment (de-)activation + * @param kernel interface to control segments at kernel level + * @param tunnel HA tunnel + * @param count number of segments the cluster uses + * @param node node, currently 1 or 0 + * @param monitor should we use monitoring functionality + * @param resync request a complete resync on startup + * @return segment object + */ +ha_segments_t *ha_segments_create(ha_socket_t *socket, ha_kernel_t *kernel, + ha_tunnel_t *tunnel, u_int count, u_int node, + bool monitor, bool resync); + +#endif /* HA_SEGMENTS_ @}*/ diff --git a/src/libcharon/plugins/ha/ha_socket.c b/src/libcharon/plugins/ha/ha_socket.c new file mode 100644 index 000000000..b84b02868 --- /dev/null +++ b/src/libcharon/plugins/ha/ha_socket.c @@ -0,0 +1,234 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "ha_socket.h" +#include "ha_plugin.h" + +#include <sys/types.h> +#include <sys/socket.h> +#include <errno.h> +#include <unistd.h> +#include <pthread.h> + +#include <daemon.h> +#include <utils/host.h> +#include <processing/jobs/callback_job.h> + +typedef struct private_ha_socket_t private_ha_socket_t; + +/** + * Private data of an ha_socket_t object. + */ +struct private_ha_socket_t { + + /** + * Public ha_socket_t interface. + */ + ha_socket_t public; + + /** + * UDP communication socket fd + */ + int fd; + + /** + * local host to receive/send from + */ + host_t *local; + + /** + * remote host to receive/send to + */ + host_t *remote; +}; + +/** + * Data to pass to the send_message() callback job + */ +typedef struct { + ha_message_t *message; + private_ha_socket_t *this; +} job_data_t; + +/** + * Cleanup job data + */ +static void job_data_destroy(job_data_t *this) +{ + this->message->destroy(this->message); + free(this); +} + +/** + * Callback to asynchronously send messages + */ +static job_requeue_t send_message(job_data_t *data) +{ + private_ha_socket_t *this; + chunk_t chunk; + + this = data->this; + chunk = data->message->get_encoding(data->message); + if (send(this->fd, chunk.ptr, chunk.len, 0) < chunk.len) + { + DBG1(DBG_CFG, "pushing HA message failed: %s", strerror(errno)); + } + return JOB_REQUEUE_NONE; +} + +/** + * Implementation of ha_socket_t.push + */ +static void push(private_ha_socket_t *this, ha_message_t *message) +{ + chunk_t chunk; + + /* Try to send synchronously, but non-blocking. */ + chunk = message->get_encoding(message); + if (send(this->fd, chunk.ptr, chunk.len, MSG_DONTWAIT) < chunk.len) + { + if (errno == EAGAIN) + { + callback_job_t *job; + job_data_t *data; + + /* Fallback to asynchronous transmission. This is required, as sendto() + * is a blocking call if it acquires a policy. We could end up in a + * deadlock, as we own an IKE_SA. */ + data = malloc_thing(job_data_t); + data->message = message; + data->this = this; + + job = callback_job_create((callback_job_cb_t)send_message, + data, (void*)job_data_destroy, NULL); + charon->processor->queue_job(charon->processor, (job_t*)job); + return; + } + DBG1(DBG_CFG, "pushing HA message failed: %s", strerror(errno)); + } + message->destroy(message); +} + +/** + * Implementation of ha_socket_t.pull + */ +static ha_message_t *pull(private_ha_socket_t *this) +{ + while (TRUE) + { + ha_message_t *message; + char buf[1024]; + int oldstate; + ssize_t len; + + pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &oldstate); + len = recv(this->fd, buf, sizeof(buf), 0); + pthread_setcancelstate(oldstate, NULL); + if (len <= 0) + { + switch (errno) + { + case ECONNREFUSED: + case EINTR: + continue; + default: + DBG1(DBG_CFG, "pulling HA message failed: %s", + strerror(errno)); + sleep(1); + } + } + message = ha_message_parse(chunk_create(buf, len)); + if (message) + { + return message; + } + } +} + +/** + * Open and connect the HA socket + */ +static bool open_socket(private_ha_socket_t *this) +{ + this->fd = socket(this->local->get_family(this->local), SOCK_DGRAM, 0); + if (this->fd == -1) + { + DBG1(DBG_CFG, "opening HA socket failed: %s", strerror(errno)); + return FALSE; + } + + if (bind(this->fd, this->local->get_sockaddr(this->local), + *this->local->get_sockaddr_len(this->local)) == -1) + { + DBG1(DBG_CFG, "binding HA socket failed: %s", strerror(errno)); + close(this->fd); + this->fd = -1; + return FALSE; + } + if (connect(this->fd, this->remote->get_sockaddr(this->remote), + *this->remote->get_sockaddr_len(this->remote)) == -1) + { + DBG1(DBG_CFG, "connecting HA socket failed: %s", strerror(errno)); + close(this->fd); + this->fd = -1; + return FALSE; + } + + return TRUE; +} + +/** + * Implementation of ha_socket_t.destroy. + */ +static void destroy(private_ha_socket_t *this) +{ + if (this->fd != -1) + { + close(this->fd); + } + DESTROY_IF(this->local); + DESTROY_IF(this->remote); + free(this); +} + +/** + * See header + */ +ha_socket_t *ha_socket_create(char *local, char *remote) +{ + private_ha_socket_t *this = malloc_thing(private_ha_socket_t); + + this->public.push = (void(*)(ha_socket_t*, ha_message_t*))push; + this->public.pull = (ha_message_t*(*)(ha_socket_t*))pull; + this->public.destroy = (void(*)(ha_socket_t*))destroy; + + this->local = host_create_from_dns(local, 0, HA_PORT); + this->remote = host_create_from_dns(remote, 0, HA_PORT); + this->fd = -1; + + if (!this->local || !this->remote) + { + DBG1(DBG_CFG, "invalid local/remote HA address"); + destroy(this); + return NULL; + } + if (!open_socket(this)) + { + destroy(this); + return NULL; + } + return &this->public; +} + diff --git a/src/libcharon/plugins/ha/ha_socket.h b/src/libcharon/plugins/ha/ha_socket.h new file mode 100644 index 000000000..8d398e22b --- /dev/null +++ b/src/libcharon/plugins/ha/ha_socket.h @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup ha_socket ha_socket + * @{ @ingroup ha + */ + +#ifndef HA_SOCKET_H_ +#define HA_SOCKET_H_ + +#include "ha_message.h" + +#include <sa/ike_sa.h> + +typedef struct ha_socket_t ha_socket_t; + +/** + * Socket to send/received SA synchronization data + */ +struct ha_socket_t { + + /** + * Push synchronization information to the responsible node. + * + * @param message message to send, gets destroyed by push() + */ + void (*push)(ha_socket_t *this, ha_message_t *message); + + /** + * Pull synchronization information from a peer we are responsible. + * + * @return received message + */ + ha_message_t *(*pull)(ha_socket_t *this); + + /** + * Destroy a ha_socket_t. + */ + void (*destroy)(ha_socket_t *this); +}; + +/** + * Create a ha_socket instance. + */ +ha_socket_t *ha_socket_create(char *local, char *remote); + +#endif /* HA_SOCKET_ @}*/ diff --git a/src/libcharon/plugins/ha/ha_tunnel.c b/src/libcharon/plugins/ha/ha_tunnel.c new file mode 100644 index 000000000..b3511e5f0 --- /dev/null +++ b/src/libcharon/plugins/ha/ha_tunnel.c @@ -0,0 +1,298 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "ha_tunnel.h" +#include "ha_plugin.h" + +#include <daemon.h> +#include <utils/identification.h> +#include <processing/jobs/callback_job.h> + +typedef struct private_ha_tunnel_t private_ha_tunnel_t; +typedef struct ha_backend_t ha_backend_t; +typedef struct ha_creds_t ha_creds_t; + +/** + * Serves credentials for the HA SA + */ +struct ha_creds_t { + + /** + * Implements credential_set_t + */ + credential_set_t public; + + /** + * own identity + */ + identification_t *local; + + /** + * peer identity + */ + identification_t *remote; + + /** + * Shared key to serve + */ + shared_key_t *key; +}; + +/** + * Serves configurations for the HA SA + */ +struct ha_backend_t { + + /** + * Implements backend_t + */ + backend_t public; + + /** + * peer config we serve + */ + peer_cfg_t *cfg; +}; + +/** + * Private data of an ha_tunnel_t object. + */ +struct private_ha_tunnel_t { + + /** + * Public ha_tunnel_t interface. + */ + ha_tunnel_t public; + + /** + * Reqid of installed trap + */ + u_int32_t trap; + + /** + * backend for HA SA + */ + ha_backend_t backend; + + /** + * credential set for HA SA + */ + ha_creds_t creds; +}; + +/** + * Implementation of ha_tunnel_t.is_sa + */ +static bool is_sa(private_ha_tunnel_t *this, ike_sa_t *ike_sa) +{ + peer_cfg_t *cfg = this->backend.cfg; + + return cfg && ike_sa->get_ike_cfg(ike_sa) == cfg->get_ike_cfg(cfg); +} + +/** + * Enumerator over HA shared_key + */ +typedef struct { + /** Implements enumerator_t */ + enumerator_t public; + /** a single secret we serve */ + shared_key_t *key; +} shared_enum_t; + +/** + * Implementation of shared_enum_t.enumerate + */ +static bool shared_enumerate(shared_enum_t *this, shared_key_t **key, + id_match_t *me, id_match_t *other) +{ + if (this->key) + { + if (me) + { + *me = ID_MATCH_PERFECT; + } + if (other) + { + *other = ID_MATCH_PERFECT; + } + *key = this->key; + this->key = NULL; + return TRUE; + } + return FALSE; +} + +/** + * Implements ha_creds_t.create_shared_enumerator + */ +static enumerator_t* create_shared_enumerator(ha_creds_t *this, + shared_key_type_t type, identification_t *me, + identification_t *other) +{ + shared_enum_t *enumerator; + + if (type != SHARED_IKE && type != SHARED_ANY) + { + return NULL; + } + if (me && !me->equals(me, this->local)) + { + return NULL; + } + if (other && !other->equals(other, this->remote)) + { + return NULL; + } + + enumerator = malloc_thing(shared_enum_t); + enumerator->public.enumerate = (void*)shared_enumerate; + enumerator->public.destroy = (void*)free; + enumerator->key = this->key; + + return &enumerator->public; +} + +/** + * Implementation of backend_t.create_peer_cfg_enumerator. + */ +static enumerator_t* create_peer_cfg_enumerator(ha_backend_t *this, + identification_t *me, identification_t *other) +{ + return enumerator_create_single(this->cfg, NULL); +} + +/** + * Implementation of backend_t.create_ike_cfg_enumerator. + */ +static enumerator_t* create_ike_cfg_enumerator(ha_backend_t *this, + host_t *me, host_t *other) +{ + return enumerator_create_single(this->cfg->get_ike_cfg(this->cfg), NULL); +} + +/** + * Install configs and a a trap for secured HA message exchange + */ +static void setup_tunnel(private_ha_tunnel_t *this, + char *local, char *remote, char *secret) +{ + peer_cfg_t *peer_cfg; + ike_cfg_t *ike_cfg; + auth_cfg_t *auth_cfg; + child_cfg_t *child_cfg; + traffic_selector_t *ts; + lifetime_cfg_t lifetime = { + .time = { + .life = 21600, .rekey = 20400, .jitter = 400, + }, + }; + + /* setup credentials */ + this->creds.local = identification_create_from_string(local); + this->creds.remote = identification_create_from_string(remote); + this->creds.key = shared_key_create(SHARED_IKE, + chunk_clone(chunk_create(secret, strlen(secret)))); + this->creds.public.create_private_enumerator = (void*)return_null; + this->creds.public.create_cert_enumerator = (void*)return_null; + this->creds.public.create_shared_enumerator = (void*)create_shared_enumerator; + this->creds.public.create_cdp_enumerator = (void*)return_null; + this->creds.public.cache_cert = (void*)nop; + + charon->credentials->add_set(charon->credentials, &this->creds.public); + + /* create config and backend */ + ike_cfg = ike_cfg_create(FALSE, FALSE, local, IKEV2_UDP_PORT, + remote, IKEV2_UDP_PORT); + ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE)); + peer_cfg = peer_cfg_create("ha", 2, ike_cfg, CERT_NEVER_SEND, + UNIQUE_KEEP, 0, 86400, 0, 7200, 3600, FALSE, 30, + NULL, NULL, FALSE, NULL, NULL); + + auth_cfg = auth_cfg_create(); + auth_cfg->add(auth_cfg, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PSK); + auth_cfg->add(auth_cfg, AUTH_RULE_IDENTITY, + identification_create_from_string(local)); + peer_cfg->add_auth_cfg(peer_cfg, auth_cfg, TRUE); + + auth_cfg = auth_cfg_create(); + auth_cfg->add(auth_cfg, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PSK); + auth_cfg->add(auth_cfg, AUTH_RULE_IDENTITY, + identification_create_from_string(remote)); + peer_cfg->add_auth_cfg(peer_cfg, auth_cfg, FALSE); + + child_cfg = child_cfg_create("ha", &lifetime, NULL, TRUE, + MODE_TRANSPORT, ACTION_NONE, ACTION_NONE, FALSE, 0); + ts = traffic_selector_create_dynamic(IPPROTO_UDP, HA_PORT, HA_PORT); + child_cfg->add_traffic_selector(child_cfg, TRUE, ts); + ts = traffic_selector_create_dynamic(IPPROTO_ICMP, 0, 65535); + child_cfg->add_traffic_selector(child_cfg, TRUE, ts); + ts = traffic_selector_create_dynamic(IPPROTO_UDP, HA_PORT, HA_PORT); + child_cfg->add_traffic_selector(child_cfg, FALSE, ts); + ts = traffic_selector_create_dynamic(IPPROTO_ICMP, 0, 65535); + child_cfg->add_traffic_selector(child_cfg, FALSE, ts); + child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP)); + peer_cfg->add_child_cfg(peer_cfg, child_cfg); + + this->backend.cfg = peer_cfg; + this->backend.public.create_peer_cfg_enumerator = (void*)create_peer_cfg_enumerator; + this->backend.public.create_ike_cfg_enumerator = (void*)create_ike_cfg_enumerator; + this->backend.public.get_peer_cfg_by_name = (void*)return_null; + + charon->backends->add_backend(charon->backends, &this->backend.public); + + /* install an acquiring trap */ + this->trap = charon->traps->install(charon->traps, peer_cfg, child_cfg); +} + +/** + * Implementation of ha_tunnel_t.destroy. + */ +static void destroy(private_ha_tunnel_t *this) +{ + if (this->backend.cfg) + { + charon->backends->remove_backend(charon->backends, &this->backend.public); + this->backend.cfg->destroy(this->backend.cfg); + } + if (this->creds.key) + { + charon->credentials->remove_set(charon->credentials, &this->creds.public); + this->creds.key->destroy(this->creds.key); + } + this->creds.local->destroy(this->creds.local); + this->creds.remote->destroy(this->creds.remote); + if (this->trap) + { + charon->traps->uninstall(charon->traps, this->trap); + } + free(this); +} + +/** + * See header + */ +ha_tunnel_t *ha_tunnel_create(char *local, char *remote, char *secret) +{ + private_ha_tunnel_t *this = malloc_thing(private_ha_tunnel_t); + + this->public.is_sa = (bool(*)(ha_tunnel_t*, ike_sa_t *ike_sa))is_sa; + this->public.destroy = (void(*)(ha_tunnel_t*))destroy; + + setup_tunnel(this, local, remote, secret); + + return &this->public; +} + diff --git a/src/libcharon/plugins/ha/ha_tunnel.h b/src/libcharon/plugins/ha/ha_tunnel.h new file mode 100644 index 000000000..085fb6122 --- /dev/null +++ b/src/libcharon/plugins/ha/ha_tunnel.h @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup ha_ ha_tunnel + * @{ @ingroup ha + */ + +#ifndef HA_TUNNEL_H_ +#define HA_TUNNEL_H_ + +#include <sa/ike_sa.h> + +typedef struct ha_tunnel_t ha_tunnel_t; + +/** + * Socket to send/received SA synchronization data + */ +struct ha_tunnel_t { + + /** + * Check if an IKE_SA is used for exchanging HA messages. + * + * @param ike_Sa ike_sa to check + * @return TRUE if IKE_SA is used to secure HA messages + */ + bool (*is_sa)(ha_tunnel_t *this, ike_sa_t *ike_sa); + + /** + * Destroy a ha_tunnel_t. + */ + void (*destroy)(ha_tunnel_t *this); +}; + +/** + * Create a ha_tunnel instance. + * + * @param local local address of HA tunnel + * @param remote remote address of HA tunnel + * @param secret PSK tunnel authentication secret + * @return HA tunnel instance + */ +ha_tunnel_t *ha_tunnel_create(char *local, char *remote, char *secret); + +#endif /* HA_TUNNEL_H_ @}*/ diff --git a/src/libcharon/plugins/kernel_klips/Makefile.am b/src/libcharon/plugins/kernel_klips/Makefile.am new file mode 100644 index 000000000..540bbe106 --- /dev/null +++ b/src/libcharon/plugins/kernel_klips/Makefile.am @@ -0,0 +1,17 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-kernel-klips.la +else +plugin_LTLIBRARIES = libstrongswan-kernel-klips.la +endif + +libstrongswan_kernel_klips_la_SOURCES = \ + kernel_klips_plugin.h kernel_klips_plugin.c \ + kernel_klips_ipsec.h kernel_klips_ipsec.c pfkeyv2.h + +libstrongswan_kernel_klips_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/kernel_klips/Makefile.in b/src/libcharon/plugins/kernel_klips/Makefile.in new file mode 100644 index 000000000..f0d112a0f --- /dev/null +++ b/src/libcharon/plugins/kernel_klips/Makefile.in @@ -0,0 +1,590 @@ +# Makefile.in generated by automake 1.11 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installcheck-am installdirs \ + maintainer-clean maintainer-clean-generic mostlyclean \ + mostlyclean-compile mostlyclean-generic mostlyclean-libtool \ + pdf pdf-am ps ps-am tags uninstall uninstall-am \ + uninstall-pluginLTLIBRARIES + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/kernel_klips/kernel_klips_ipsec.c b/src/libcharon/plugins/kernel_klips/kernel_klips_ipsec.c new file mode 100644 index 000000000..01df4f71a --- /dev/null +++ b/src/libcharon/plugins/kernel_klips/kernel_klips_ipsec.c @@ -0,0 +1,2657 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <stdint.h> +#include "pfkeyv2.h" +#include <linux/udp.h> +#include <net/if.h> +#include <unistd.h> +#include <stdio.h> +#include <string.h> +#include <time.h> +#include <errno.h> + +#include "kernel_klips_ipsec.h" + +#include <daemon.h> +#include <threading/thread.h> +#include <threading/mutex.h> +#include <processing/jobs/callback_job.h> +#include <processing/jobs/acquire_job.h> +#include <processing/jobs/rekey_child_sa_job.h> +#include <processing/jobs/delete_child_sa_job.h> +#include <processing/jobs/update_sa_job.h> + +/** default timeout for generated SPIs (in seconds) */ +#define SPI_TIMEOUT 30 + +/** buffer size for PF_KEY messages */ +#define PFKEY_BUFFER_SIZE 2048 + +/** PF_KEY messages are 64 bit aligned */ +#define PFKEY_ALIGNMENT 8 +/** aligns len to 64 bits */ +#define PFKEY_ALIGN(len) (((len) + PFKEY_ALIGNMENT - 1) & ~(PFKEY_ALIGNMENT - 1)) +/** calculates the properly padded length in 64 bit chunks */ +#define PFKEY_LEN(len) ((PFKEY_ALIGN(len) / PFKEY_ALIGNMENT)) +/** calculates user mode length i.e. in bytes */ +#define PFKEY_USER_LEN(len) ((len) * PFKEY_ALIGNMENT) + +/** given a PF_KEY message header and an extension this updates the length in the header */ +#define PFKEY_EXT_ADD(msg, ext) ((msg)->sadb_msg_len += ((struct sadb_ext*)ext)->sadb_ext_len) +/** given a PF_KEY message header this returns a pointer to the next extension */ +#define PFKEY_EXT_ADD_NEXT(msg) ((struct sadb_ext*)(((char*)(msg)) + PFKEY_USER_LEN((msg)->sadb_msg_len))) +/** copy an extension and append it to a PF_KEY message */ +#define PFKEY_EXT_COPY(msg, ext) (PFKEY_EXT_ADD(msg, memcpy(PFKEY_EXT_ADD_NEXT(msg), ext, PFKEY_USER_LEN(((struct sadb_ext*)ext)->sadb_ext_len)))) +/** given a PF_KEY extension this returns a pointer to the next extension */ +#define PFKEY_EXT_NEXT(ext) ((struct sadb_ext*)(((char*)(ext)) + PFKEY_USER_LEN(((struct sadb_ext*)ext)->sadb_ext_len))) +/** given a PF_KEY extension this returns a pointer to the next extension also updates len (len in 64 bit words) */ +#define PFKEY_EXT_NEXT_LEN(ext,len) ((len) -= (ext)->sadb_ext_len, PFKEY_EXT_NEXT(ext)) +/** true if ext has a valid length and len is large enough to contain ext (assuming len in 64 bit words) */ +#define PFKEY_EXT_OK(ext,len) ((len) >= PFKEY_LEN(sizeof(struct sadb_ext)) && \ + (ext)->sadb_ext_len >= PFKEY_LEN(sizeof(struct sadb_ext)) && \ + (ext)->sadb_ext_len <= (len)) + +/** special SPI values used for policies in KLIPS */ +#define SPI_PASS 256 +#define SPI_DROP 257 +#define SPI_REJECT 258 +#define SPI_HOLD 259 +#define SPI_TRAP 260 +#define SPI_TRAPSUBNET 261 + +/** the prefix of the name of KLIPS ipsec devices */ +#define IPSEC_DEV_PREFIX "ipsec" +/** this is the default number of ipsec devices */ +#define DEFAULT_IPSEC_DEV_COUNT 4 +/** TRUE if the given name matches an ipsec device */ +#define IS_IPSEC_DEV(name) (strneq((name), IPSEC_DEV_PREFIX, sizeof(IPSEC_DEV_PREFIX) - 1)) + +/** the following stuff is from ipsec_tunnel.h */ +struct ipsectunnelconf +{ + __u32 cf_cmd; + union + { + char cfu_name[12]; + } cf_u; +#define cf_name cf_u.cfu_name +}; + +#define IPSEC_SET_DEV (SIOCDEVPRIVATE) +#define IPSEC_DEL_DEV (SIOCDEVPRIVATE + 1) +#define IPSEC_CLR_DEV (SIOCDEVPRIVATE + 2) + +typedef struct private_kernel_klips_ipsec_t private_kernel_klips_ipsec_t; + +/** + * Private variables and functions of kernel_klips class. + */ +struct private_kernel_klips_ipsec_t +{ + /** + * Public part of the kernel_klips_t object. + */ + kernel_klips_ipsec_t public; + + /** + * mutex to lock access to various lists + */ + mutex_t *mutex; + + /** + * List of installed policies (policy_entry_t) + */ + linked_list_t *policies; + + /** + * List of allocated SPIs without installed SA (sa_entry_t) + */ + linked_list_t *allocated_spis; + + /** + * List of installed SAs (sa_entry_t) + */ + linked_list_t *installed_sas; + + /** + * whether to install routes along policies + */ + bool install_routes; + + /** + * List of ipsec devices (ipsec_dev_t) + */ + linked_list_t *ipsec_devices; + + /** + * job receiving PF_KEY events + */ + callback_job_t *job; + + /** + * mutex to lock access to the PF_KEY socket + */ + mutex_t *mutex_pfkey; + + /** + * PF_KEY socket to communicate with the kernel + */ + int socket; + + /** + * PF_KEY socket to receive acquire and expire events + */ + int socket_events; + + /** + * sequence number for messages sent to the kernel + */ + int seq; + +}; + + +typedef struct ipsec_dev_t ipsec_dev_t; + +/** + * ipsec device + */ +struct ipsec_dev_t { + /** name of the virtual ipsec interface */ + char name[IFNAMSIZ]; + + /** name of the physical interface */ + char phys_name[IFNAMSIZ]; + + /** by how many CHILD_SA's this ipsec device is used */ + u_int refcount; +}; + +/** + * compare the given name with the virtual device name + */ +static inline bool ipsec_dev_match_byname(ipsec_dev_t *current, char *name) +{ + return name && streq(current->name, name); +} + +/** + * compare the given name with the physical device name + */ +static inline bool ipsec_dev_match_byphys(ipsec_dev_t *current, char *name) +{ + return name && streq(current->phys_name, name); +} + +/** + * matches free ipsec devices + */ +static inline bool ipsec_dev_match_free(ipsec_dev_t *current) +{ + return current->refcount == 0; +} + +/** + * tries to find an ipsec_dev_t object by name + */ +static status_t find_ipsec_dev(private_kernel_klips_ipsec_t *this, char *name, + ipsec_dev_t **dev) +{ + linked_list_match_t match = (linked_list_match_t)(IS_IPSEC_DEV(name) ? + ipsec_dev_match_byname : ipsec_dev_match_byphys); + return this->ipsec_devices->find_first(this->ipsec_devices, match, + (void**)dev, name); +} + +/** + * attach an ipsec device to a physical interface + */ +static status_t attach_ipsec_dev(char* name, char *phys_name) +{ + int sock; + struct ifreq req; + struct ipsectunnelconf *itc = (struct ipsectunnelconf*)&req.ifr_data; + short phys_flags; + int mtu; + + DBG2(DBG_KNL, "attaching virtual interface %s to %s", name, phys_name); + + if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) <= 0) + { + return FAILED; + } + + strncpy(req.ifr_name, phys_name, IFNAMSIZ); + if (ioctl(sock, SIOCGIFFLAGS, &req) < 0) + { + close(sock); + return FAILED; + } + phys_flags = req.ifr_flags; + + strncpy(req.ifr_name, name, IFNAMSIZ); + if (ioctl(sock, SIOCGIFFLAGS, &req) < 0) + { + close(sock); + return FAILED; + } + + if (req.ifr_flags & IFF_UP) + { + /* if it's already up, it is already attached, detach it first */ + ioctl(sock, IPSEC_DEL_DEV, &req); + } + + /* attach it */ + strncpy(req.ifr_name, name, IFNAMSIZ); + strncpy(itc->cf_name, phys_name, sizeof(itc->cf_name)); + ioctl(sock, IPSEC_SET_DEV, &req); + + /* copy address from physical to virtual */ + strncpy(req.ifr_name, phys_name, IFNAMSIZ); + if (ioctl(sock, SIOCGIFADDR, &req) == 0) + { + strncpy(req.ifr_name, name, IFNAMSIZ); + ioctl(sock, SIOCSIFADDR, &req); + } + + /* copy net mask from physical to virtual */ + strncpy(req.ifr_name, phys_name, IFNAMSIZ); + if (ioctl(sock, SIOCGIFNETMASK, &req) == 0) + { + strncpy(req.ifr_name, name, IFNAMSIZ); + ioctl(sock, SIOCSIFNETMASK, &req); + } + + /* copy other flags and addresses */ + strncpy(req.ifr_name, name, IFNAMSIZ); + if (ioctl(sock, SIOCGIFFLAGS, &req) == 0) + { + if (phys_flags & IFF_POINTOPOINT) + { + req.ifr_flags |= IFF_POINTOPOINT; + req.ifr_flags &= ~IFF_BROADCAST; + ioctl(sock, SIOCSIFFLAGS, &req); + + strncpy(req.ifr_name, phys_name, IFNAMSIZ); + if (ioctl(sock, SIOCGIFDSTADDR, &req) == 0) + { + strncpy(req.ifr_name, name, IFNAMSIZ); + ioctl(sock, SIOCSIFDSTADDR, &req); + } + } + else if (phys_flags & IFF_BROADCAST) + { + req.ifr_flags &= ~IFF_POINTOPOINT; + req.ifr_flags |= IFF_BROADCAST; + ioctl(sock, SIOCSIFFLAGS, &req); + + strncpy(req.ifr_name, phys_name, IFNAMSIZ); + if (ioctl(sock, SIOCGIFBRDADDR, &req)==0) + { + strncpy(req.ifr_name, name, IFNAMSIZ); + ioctl(sock, SIOCSIFBRDADDR, &req); + } + } + else + { + req.ifr_flags &= ~IFF_POINTOPOINT; + req.ifr_flags &= ~IFF_BROADCAST; + ioctl(sock, SIOCSIFFLAGS, &req); + } + } + + mtu = lib->settings->get_int(lib->settings, + "charon.plugins.kernel-klips.ipsec_dev_mtu", 0); + if (mtu <= 0) + { + /* guess MTU as physical MTU - ESP overhead [- NAT-T overhead] + * ESP overhead : 73 bytes + * NAT-T overhead : 8 bytes ==> 81 bytes + * + * assuming tunnel mode with AES encryption and integrity + * outer IP header : 20 bytes + * (NAT-T UDP header: 8 bytes) + * ESP header : 8 bytes + * IV : 16 bytes + * padding : 15 bytes (worst-case) + * pad len / NH : 2 bytes + * auth data : 12 bytes + */ + strncpy(req.ifr_name, phys_name, IFNAMSIZ); + ioctl(sock, SIOCGIFMTU, &req); + mtu = req.ifr_mtu - 81; + } + + /* set MTU */ + strncpy(req.ifr_name, name, IFNAMSIZ); + req.ifr_mtu = mtu; + ioctl(sock, SIOCSIFMTU, &req); + + /* bring ipsec device UP */ + if (ioctl(sock, SIOCGIFFLAGS, &req) == 0) + { + req.ifr_flags |= IFF_UP; + ioctl(sock, SIOCSIFFLAGS, &req); + } + + close(sock); + return SUCCESS; +} + +/** + * detach an ipsec device from a physical interface + */ +static status_t detach_ipsec_dev(char* name, char *phys_name) +{ + int sock; + struct ifreq req; + + DBG2(DBG_KNL, "detaching virtual interface %s from %s", name, + strlen(phys_name) ? phys_name : "any physical interface"); + + if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) <= 0) + { + return FAILED; + } + + strncpy(req.ifr_name, name, IFNAMSIZ); + if (ioctl(sock, SIOCGIFFLAGS, &req) < 0) + { + close(sock); + return FAILED; + } + + /* shutting interface down */ + if (req.ifr_flags & IFF_UP) + { + req.ifr_flags &= ~IFF_UP; + ioctl(sock, SIOCSIFFLAGS, &req); + } + + /* unset address */ + memset(&req.ifr_addr, 0, sizeof(req.ifr_addr)); + req.ifr_addr.sa_family = AF_INET; + ioctl(sock, SIOCSIFADDR, &req); + + /* detach interface */ + ioctl(sock, IPSEC_DEL_DEV, &req); + + close(sock); + return SUCCESS; +} + +/** + * destroy an ipsec_dev_t object + */ +static void ipsec_dev_destroy(ipsec_dev_t *this) +{ + detach_ipsec_dev(this->name, this->phys_name); + free(this); +} + + +typedef struct route_entry_t route_entry_t; + +/** + * installed routing entry + */ +struct route_entry_t { + /** Name of the interface the route is bound to */ + char *if_name; + + /** Source ip of the route */ + host_t *src_ip; + + /** Gateway for this route */ + host_t *gateway; + + /** Destination net */ + chunk_t dst_net; + + /** Destination net prefixlen */ + u_int8_t prefixlen; +}; + +/** + * destroy an route_entry_t object + */ +static void route_entry_destroy(route_entry_t *this) +{ + free(this->if_name); + this->src_ip->destroy(this->src_ip); + this->gateway->destroy(this->gateway); + chunk_free(&this->dst_net); + free(this); +} + +typedef struct policy_entry_t policy_entry_t; + +/** + * installed kernel policy. + */ +struct policy_entry_t { + + /** reqid of this policy, if setup as trap */ + u_int32_t reqid; + + /** direction of this policy: in, out, forward */ + u_int8_t direction; + + /** parameters of installed policy */ + struct { + /** subnet and port */ + host_t *net; + /** subnet mask */ + u_int8_t mask; + /** protocol */ + u_int8_t proto; + } src, dst; + + /** associated route installed for this policy */ + route_entry_t *route; + + /** by how many CHILD_SA's this policy is actively used */ + u_int activecount; + + /** by how many CHILD_SA's this policy is trapped */ + u_int trapcount; +}; + +/** + * convert a numerical netmask to a host_t + */ +static host_t *mask2host(int family, u_int8_t mask) +{ + static const u_char bitmask[] = { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe }; + chunk_t chunk = chunk_alloca(family == AF_INET ? 4 : 16); + int bytes = mask / 8, bits = mask % 8; + memset(chunk.ptr, 0xFF, bytes); + memset(chunk.ptr + bytes, 0, chunk.len - bytes); + if (bits) + { + chunk.ptr[bytes] = bitmask[bits]; + } + return host_create_from_chunk(family, chunk, 0); +} + +/** + * check if a host is in a subnet (host with netmask in bits) + */ +static bool is_host_in_net(host_t *host, host_t *net, u_int8_t mask) +{ + static const u_char bitmask[] = { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe }; + chunk_t host_chunk, net_chunk; + int bytes = mask / 8, bits = mask % 8; + + host_chunk = host->get_address(host); + net_chunk = net->get_address(net); + + if (host_chunk.len != net_chunk.len) + { + return FALSE; + } + + if (memeq(host_chunk.ptr, net_chunk.ptr, bytes)) + { + return (bits == 0) || + (host_chunk.ptr[bytes] & bitmask[bits]) == + (net_chunk.ptr[bytes] & bitmask[bits]); + } + + return FALSE; +} + +/** + * create a policy_entry_t object + */ +static policy_entry_t *create_policy_entry(traffic_selector_t *src_ts, + traffic_selector_t *dst_ts, policy_dir_t dir) +{ + policy_entry_t *policy = malloc_thing(policy_entry_t); + policy->reqid = 0; + policy->direction = dir; + policy->route = NULL; + policy->activecount = 0; + policy->trapcount = 0; + + src_ts->to_subnet(src_ts, &policy->src.net, &policy->src.mask); + dst_ts->to_subnet(dst_ts, &policy->dst.net, &policy->dst.mask); + + /* src or dest proto may be "any" (0), use more restrictive one */ + policy->src.proto = max(src_ts->get_protocol(src_ts), dst_ts->get_protocol(dst_ts)); + policy->src.proto = policy->src.proto ? policy->src.proto : 0; + policy->dst.proto = policy->src.proto; + + return policy; +} + +/** + * destroy a policy_entry_t object + */ +static void policy_entry_destroy(policy_entry_t *this) +{ + DESTROY_IF(this->src.net); + DESTROY_IF(this->dst.net); + if (this->route) + { + route_entry_destroy(this->route); + } + free(this); +} + +/** + * compares two policy_entry_t + */ +static inline bool policy_entry_equals(policy_entry_t *current, policy_entry_t *policy) +{ + return current->direction == policy->direction && + current->src.proto == policy->src.proto && + current->dst.proto == policy->dst.proto && + current->src.mask == policy->src.mask && + current->dst.mask == policy->dst.mask && + current->src.net->equals(current->src.net, policy->src.net) && + current->dst.net->equals(current->dst.net, policy->dst.net); +} + +static inline bool policy_entry_match_byaddrs(policy_entry_t *current, host_t *src, + host_t *dst) +{ + return is_host_in_net(src, current->src.net, current->src.mask) && + is_host_in_net(dst, current->dst.net, current->dst.mask); +} + +typedef struct sa_entry_t sa_entry_t; + +/** + * used for two things: + * - allocated SPIs that have not yet resulted in an installed SA + * - installed inbound SAs with enabled UDP encapsulation + */ +struct sa_entry_t { + + /** protocol of this SA */ + protocol_id_t protocol; + + /** reqid of this SA */ + u_int32_t reqid; + + /** SPI of this SA */ + u_int32_t spi; + + /** src address of this SA */ + host_t *src; + + /** dst address of this SA */ + host_t *dst; + + /** TRUE if this SA uses UDP encapsulation */ + bool encap; + + /** TRUE if this SA is inbound */ + bool inbound; +}; + +/** + * create an sa_entry_t object + */ +static sa_entry_t *create_sa_entry(protocol_id_t protocol, u_int32_t spi, + u_int32_t reqid, host_t *src, host_t *dst, + bool encap, bool inbound) +{ + sa_entry_t *sa = malloc_thing(sa_entry_t); + sa->protocol = protocol; + sa->reqid = reqid; + sa->spi = spi; + sa->src = src ? src->clone(src) : NULL; + sa->dst = dst ? dst->clone(dst) : NULL; + sa->encap = encap; + sa->inbound = inbound; + return sa; +} + +/** + * destroy an sa_entry_t object + */ +static void sa_entry_destroy(sa_entry_t *this) +{ + DESTROY_IF(this->src); + DESTROY_IF(this->dst); + free(this); +} + +/** + * match an sa_entry_t for an inbound SA that uses UDP encapsulation by spi and src (remote) address + */ +static inline bool sa_entry_match_encapbysrc(sa_entry_t *current, u_int32_t *spi, + host_t *src) +{ + return current->encap && current->inbound && + current->spi == *spi && src->ip_equals(src, current->src); +} + +/** + * match an sa_entry_t by protocol, spi and dst address (as the kernel does it) + */ +static inline bool sa_entry_match_bydst(sa_entry_t *current, protocol_id_t *protocol, + u_int32_t *spi, host_t *dst) +{ + return current->protocol == *protocol && current->spi == *spi && dst->ip_equals(dst, current->dst); +} + +/** + * match an sa_entry_t by protocol, reqid and spi + */ +static inline bool sa_entry_match_byid(sa_entry_t *current, protocol_id_t *protocol, + u_int32_t *spi, u_int32_t *reqid) +{ + return current->protocol == *protocol && current->spi == *spi && current->reqid == *reqid; +} + +typedef struct pfkey_msg_t pfkey_msg_t; + +struct pfkey_msg_t +{ + /** + * PF_KEY message base + */ + struct sadb_msg *msg; + + + /** + * PF_KEY message extensions + */ + union { + struct sadb_ext *ext[SADB_EXT_MAX + 1]; + struct { + struct sadb_ext *reserved; /* SADB_EXT_RESERVED */ + struct sadb_sa *sa; /* SADB_EXT_SA */ + struct sadb_lifetime *lft_current; /* SADB_EXT_LIFETIME_CURRENT */ + struct sadb_lifetime *lft_hard; /* SADB_EXT_LIFETIME_HARD */ + struct sadb_lifetime *lft_soft; /* SADB_EXT_LIFETIME_SOFT */ + struct sadb_address *src; /* SADB_EXT_ADDRESS_SRC */ + struct sadb_address *dst; /* SADB_EXT_ADDRESS_DST */ + struct sadb_address *proxy; /* SADB_EXT_ADDRESS_PROXY */ + struct sadb_key *key_auth; /* SADB_EXT_KEY_AUTH */ + struct sadb_key *key_encr; /* SADB_EXT_KEY_ENCRYPT */ + struct sadb_ident *id_src; /* SADB_EXT_IDENTITY_SRC */ + struct sadb_ident *id_dst; /* SADB_EXT_IDENTITY_DST */ + struct sadb_sens *sensitivity; /* SADB_EXT_SENSITIVITY */ + struct sadb_prop *proposal; /* SADB_EXT_PROPOSAL */ + struct sadb_supported *supported_auth; /* SADB_EXT_SUPPORTED_AUTH */ + struct sadb_supported *supported_encr; /* SADB_EXT_SUPPORTED_ENCRYPT */ + struct sadb_spirange *spirange; /* SADB_EXT_SPIRANGE */ + struct sadb_x_kmprivate *x_kmprivate; /* SADB_X_EXT_KMPRIVATE */ + struct sadb_ext *x_policy; /* SADB_X_EXT_SATYPE2 */ + struct sadb_ext *x_sa2; /* SADB_X_EXT_SA2 */ + struct sadb_address *x_dst2; /* SADB_X_EXT_ADDRESS_DST2 */ + struct sadb_address *x_src_flow; /* SADB_X_EXT_ADDRESS_SRC_FLOW */ + struct sadb_address *x_dst_flow; /* SADB_X_EXT_ADDRESS_DST_FLOW */ + struct sadb_address *x_src_mask; /* SADB_X_EXT_ADDRESS_SRC_MASK */ + struct sadb_address *x_dst_mask; /* SADB_X_EXT_ADDRESS_DST_MASK */ + struct sadb_x_debug *x_debug; /* SADB_X_EXT_DEBUG */ + struct sadb_protocol *x_protocol; /* SADB_X_EXT_PROTOCOL */ + struct sadb_x_nat_t_type *x_natt_type; /* SADB_X_EXT_NAT_T_TYPE */ + struct sadb_x_nat_t_port *x_natt_sport; /* SADB_X_EXT_NAT_T_SPORT */ + struct sadb_x_nat_t_port *x_natt_dport; /* SADB_X_EXT_NAT_T_DPORT */ + struct sadb_address *x_natt_oa; /* SADB_X_EXT_NAT_T_OA */ + } __attribute__((__packed__)); + }; +}; + +/** + * convert a IKEv2 specific protocol identifier to the PF_KEY sa type + */ +static u_int8_t proto_ike2satype(protocol_id_t proto) +{ + switch (proto) + { + case PROTO_ESP: + return SADB_SATYPE_ESP; + case PROTO_AH: + return SADB_SATYPE_AH; + case IPPROTO_COMP: + return SADB_X_SATYPE_COMP; + default: + return proto; + } +} + +/** + * convert a PF_KEY sa type to a IKEv2 specific protocol identifier + */ +static protocol_id_t proto_satype2ike(u_int8_t proto) +{ + switch (proto) + { + case SADB_SATYPE_ESP: + return PROTO_ESP; + case SADB_SATYPE_AH: + return PROTO_AH; + case SADB_X_SATYPE_COMP: + return IPPROTO_COMP; + default: + return proto; + } +} + +typedef struct kernel_algorithm_t kernel_algorithm_t; + +/** + * Mapping of IKEv2 algorithms to PF_KEY algorithms + */ +struct kernel_algorithm_t { + /** + * Identifier specified in IKEv2 + */ + int ikev2; + + /** + * Identifier as defined in pfkeyv2.h + */ + int kernel; +}; + +#define END_OF_LIST -1 + +/** + * Algorithms for encryption + */ +static kernel_algorithm_t encryption_algs[] = { +/* {ENCR_DES_IV64, 0 }, */ + {ENCR_DES, SADB_EALG_DESCBC }, + {ENCR_3DES, SADB_EALG_3DESCBC }, +/* {ENCR_RC5, 0 }, */ +/* {ENCR_IDEA, 0 }, */ +/* {ENCR_CAST, 0 }, */ + {ENCR_BLOWFISH, SADB_EALG_BFCBC }, +/* {ENCR_3IDEA, 0 }, */ +/* {ENCR_DES_IV32, 0 }, */ + {ENCR_NULL, SADB_EALG_NULL }, + {ENCR_AES_CBC, SADB_EALG_AESCBC }, +/* {ENCR_AES_CTR, 0 }, */ +/* {ENCR_AES_CCM_ICV8, 0 }, */ +/* {ENCR_AES_CCM_ICV12, 0 }, */ +/* {ENCR_AES_CCM_ICV16, 0 }, */ +/* {ENCR_AES_GCM_ICV8, 0 }, */ +/* {ENCR_AES_GCM_ICV12, 0 }, */ +/* {ENCR_AES_GCM_ICV16, 0 }, */ + {END_OF_LIST, 0 }, +}; + +/** + * Algorithms for integrity protection + */ +static kernel_algorithm_t integrity_algs[] = { + {AUTH_HMAC_MD5_96, SADB_AALG_MD5HMAC }, + {AUTH_HMAC_SHA1_96, SADB_AALG_SHA1HMAC }, + {AUTH_HMAC_SHA2_256_128, SADB_AALG_SHA256_HMAC }, + {AUTH_HMAC_SHA2_384_192, SADB_AALG_SHA384_HMAC }, + {AUTH_HMAC_SHA2_512_256, SADB_AALG_SHA512_HMAC }, +/* {AUTH_DES_MAC, 0, }, */ +/* {AUTH_KPDK_MD5, 0, }, */ +/* {AUTH_AES_XCBC_96, 0, }, */ + {END_OF_LIST, 0, }, +}; + +#if 0 +/** + * Algorithms for IPComp, unused yet + */ +static kernel_algorithm_t compression_algs[] = { +/* {IPCOMP_OUI, 0 }, */ + {IPCOMP_DEFLATE, SADB_X_CALG_DEFLATE }, + {IPCOMP_LZS, SADB_X_CALG_LZS }, +/* {IPCOMP_LZJH, 0 }, */ + {END_OF_LIST, 0 }, +}; +#endif + +/** + * Look up a kernel algorithm ID and its key size + */ +static int lookup_algorithm(kernel_algorithm_t *list, int ikev2) +{ + while (list->ikev2 != END_OF_LIST) + { + if (ikev2 == list->ikev2) + { + return list->kernel; + } + list++; + } + return 0; +} + +/** + * add a host behind a sadb_address extension + */ +static void host2ext(host_t *host, struct sadb_address *ext) +{ + sockaddr_t *host_addr = host->get_sockaddr(host); + socklen_t *len = host->get_sockaddr_len(host); + memcpy((char*)(ext + 1), host_addr, *len); + ext->sadb_address_len = PFKEY_LEN(sizeof(*ext) + *len); +} + +/** + * add a host to the given sadb_msg + */ +static void add_addr_ext(struct sadb_msg *msg, host_t *host, u_int16_t type) +{ + struct sadb_address *addr = (struct sadb_address*)PFKEY_EXT_ADD_NEXT(msg); + addr->sadb_address_exttype = type; + host2ext(host, addr); + PFKEY_EXT_ADD(msg, addr); +} + +/** + * adds an empty address extension to the given sadb_msg + */ +static void add_anyaddr_ext(struct sadb_msg *msg, int family, u_int8_t type) +{ + socklen_t len = (family == AF_INET) ? sizeof(struct sockaddr_in) : + sizeof(struct sockaddr_in6); + struct sadb_address *addr = (struct sadb_address*)PFKEY_EXT_ADD_NEXT(msg); + addr->sadb_address_exttype = type; + sockaddr_t *saddr = (sockaddr_t*)(addr + 1); + saddr->sa_family = family; + addr->sadb_address_len = PFKEY_LEN(sizeof(*addr) + len); + PFKEY_EXT_ADD(msg, addr); +} + +/** + * add udp encap extensions to a sadb_msg + */ +static void add_encap_ext(struct sadb_msg *msg, host_t *src, host_t *dst, + bool ports_only) +{ + struct sadb_x_nat_t_type* nat_type; + struct sadb_x_nat_t_port* nat_port; + + if (!ports_only) + { + nat_type = (struct sadb_x_nat_t_type*)PFKEY_EXT_ADD_NEXT(msg); + nat_type->sadb_x_nat_t_type_exttype = SADB_X_EXT_NAT_T_TYPE; + nat_type->sadb_x_nat_t_type_len = PFKEY_LEN(sizeof(struct sadb_x_nat_t_type)); + nat_type->sadb_x_nat_t_type_type = UDP_ENCAP_ESPINUDP; + PFKEY_EXT_ADD(msg, nat_type); + } + + nat_port = (struct sadb_x_nat_t_port*)PFKEY_EXT_ADD_NEXT(msg); + nat_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_SPORT; + nat_port->sadb_x_nat_t_port_len = PFKEY_LEN(sizeof(struct sadb_x_nat_t_port)); + nat_port->sadb_x_nat_t_port_port = src->get_port(src); + PFKEY_EXT_ADD(msg, nat_port); + + nat_port = (struct sadb_x_nat_t_port*)PFKEY_EXT_ADD_NEXT(msg); + nat_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_DPORT; + nat_port->sadb_x_nat_t_port_len = PFKEY_LEN(sizeof(struct sadb_x_nat_t_port)); + nat_port->sadb_x_nat_t_port_port = dst->get_port(dst); + PFKEY_EXT_ADD(msg, nat_port); +} + +/** + * build an SADB_X_ADDFLOW msg + */ +static void build_addflow(struct sadb_msg *msg, u_int8_t satype, u_int32_t spi, + host_t *src, host_t *dst, host_t *src_net, u_int8_t src_mask, + host_t *dst_net, u_int8_t dst_mask, u_int8_t protocol, bool replace) +{ + struct sadb_sa *sa; + struct sadb_protocol *proto; + host_t *host; + + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_X_ADDFLOW; + msg->sadb_msg_satype = satype; + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg); + sa->sadb_sa_exttype = SADB_EXT_SA; + sa->sadb_sa_spi = spi; + sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa)); + sa->sadb_sa_flags = replace ? SADB_X_SAFLAGS_REPLACEFLOW : 0; + PFKEY_EXT_ADD(msg, sa); + + if (!src) + { + add_anyaddr_ext(msg, src_net->get_family(src_net), SADB_EXT_ADDRESS_SRC); + } + else + { + add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC); + } + + if (!dst) + { + add_anyaddr_ext(msg, dst_net->get_family(dst_net), SADB_EXT_ADDRESS_DST); + } + else + { + add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST); + } + + add_addr_ext(msg, src_net, SADB_X_EXT_ADDRESS_SRC_FLOW); + add_addr_ext(msg, dst_net, SADB_X_EXT_ADDRESS_DST_FLOW); + + host = mask2host(src_net->get_family(src_net), src_mask); + add_addr_ext(msg, host, SADB_X_EXT_ADDRESS_SRC_MASK); + host->destroy(host); + + host = mask2host(dst_net->get_family(dst_net), dst_mask); + add_addr_ext(msg, host, SADB_X_EXT_ADDRESS_DST_MASK); + host->destroy(host); + + proto = (struct sadb_protocol*)PFKEY_EXT_ADD_NEXT(msg); + proto->sadb_protocol_exttype = SADB_X_EXT_PROTOCOL; + proto->sadb_protocol_len = PFKEY_LEN(sizeof(struct sadb_protocol)); + proto->sadb_protocol_proto = protocol; + PFKEY_EXT_ADD(msg, proto); +} + +/** + * build an SADB_X_DELFLOW msg + */ +static void build_delflow(struct sadb_msg *msg, u_int8_t satype, + host_t *src_net, u_int8_t src_mask, host_t *dst_net, u_int8_t dst_mask, + u_int8_t protocol) +{ + struct sadb_protocol *proto; + host_t *host; + + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_X_DELFLOW; + msg->sadb_msg_satype = satype; + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + add_addr_ext(msg, src_net, SADB_X_EXT_ADDRESS_SRC_FLOW); + add_addr_ext(msg, dst_net, SADB_X_EXT_ADDRESS_DST_FLOW); + + host = mask2host(src_net->get_family(src_net), + src_mask); + add_addr_ext(msg, host, SADB_X_EXT_ADDRESS_SRC_MASK); + host->destroy(host); + + host = mask2host(dst_net->get_family(dst_net), + dst_mask); + add_addr_ext(msg, host, SADB_X_EXT_ADDRESS_DST_MASK); + host->destroy(host); + + proto = (struct sadb_protocol*)PFKEY_EXT_ADD_NEXT(msg); + proto->sadb_protocol_exttype = SADB_X_EXT_PROTOCOL; + proto->sadb_protocol_len = PFKEY_LEN(sizeof(struct sadb_protocol)); + proto->sadb_protocol_proto = protocol; + PFKEY_EXT_ADD(msg, proto); +} + +/** + * Parses a pfkey message received from the kernel + */ +static status_t parse_pfkey_message(struct sadb_msg *msg, pfkey_msg_t *out) +{ + struct sadb_ext* ext; + size_t len; + + memset(out, 0, sizeof(pfkey_msg_t)); + out->msg = msg; + + len = msg->sadb_msg_len; + len -= PFKEY_LEN(sizeof(struct sadb_msg)); + + ext = (struct sadb_ext*)(((char*)msg) + sizeof(struct sadb_msg)); + + while (len >= PFKEY_LEN(sizeof(struct sadb_ext))) + { + if (ext->sadb_ext_len < PFKEY_LEN(sizeof(struct sadb_ext)) || + ext->sadb_ext_len > len) + { + DBG1(DBG_KNL, "length of PF_KEY extension (%d) is invalid", ext->sadb_ext_type); + break; + } + + if ((ext->sadb_ext_type > SADB_EXT_MAX) || (!ext->sadb_ext_type)) + { + DBG1(DBG_KNL, "type of PF_KEY extension (%d) is invalid", ext->sadb_ext_type); + break; + } + + if (out->ext[ext->sadb_ext_type]) + { + DBG1(DBG_KNL, "duplicate PF_KEY extension of type (%d)", ext->sadb_ext_type); + break; + } + + out->ext[ext->sadb_ext_type] = ext; + ext = PFKEY_EXT_NEXT_LEN(ext, len); + } + + if (len) + { + DBG1(DBG_KNL, "PF_KEY message length is invalid"); + return FAILED; + } + + return SUCCESS; +} + +/** + * Send a message to a specific PF_KEY socket and handle the response. + */ +static status_t pfkey_send_socket(private_kernel_klips_ipsec_t *this, int socket, + struct sadb_msg *in, struct sadb_msg **out, size_t *out_len) +{ + unsigned char buf[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg; + int in_len, len; + + this->mutex_pfkey->lock(this->mutex_pfkey); + + in->sadb_msg_seq = ++this->seq; + in->sadb_msg_pid = getpid(); + + in_len = PFKEY_USER_LEN(in->sadb_msg_len); + + while (TRUE) + { + len = send(socket, in, in_len, 0); + + if (len != in_len) + { + switch (errno) + { + case EINTR: + /* interrupted, try again */ + continue; + case EINVAL: + case EEXIST: + case ESRCH: + /* we should also get a response for these from KLIPS */ + break; + default: + this->mutex_pfkey->unlock(this->mutex_pfkey); + DBG1(DBG_KNL, "error sending to PF_KEY socket: %s (%d)", + strerror(errno), errno); + return FAILED; + } + } + break; + } + + while (TRUE) + { + msg = (struct sadb_msg*)buf; + + len = recv(socket, buf, sizeof(buf), 0); + + if (len < 0) + { + if (errno == EINTR) + { + DBG1(DBG_KNL, "got interrupted"); + /* interrupted, try again */ + continue; + } + this->mutex_pfkey->unlock(this->mutex_pfkey); + DBG1(DBG_KNL, "error reading from PF_KEY socket: %s", strerror(errno)); + return FAILED; + } + if (len < sizeof(struct sadb_msg) || + msg->sadb_msg_len < PFKEY_LEN(sizeof(struct sadb_msg))) + { + this->mutex_pfkey->unlock(this->mutex_pfkey); + DBG1(DBG_KNL, "received corrupted PF_KEY message"); + return FAILED; + } + if (msg->sadb_msg_len > len / PFKEY_ALIGNMENT) + { + this->mutex_pfkey->unlock(this->mutex_pfkey); + DBG1(DBG_KNL, "buffer was too small to receive the complete PF_KEY message"); + return FAILED; + } + if (msg->sadb_msg_pid != in->sadb_msg_pid) + { + DBG2(DBG_KNL, "received PF_KEY message is not intended for us"); + continue; + } + if (msg->sadb_msg_seq != this->seq) + { + DBG1(DBG_KNL, "received PF_KEY message with invalid sequence number," + " was %d expected %d", msg->sadb_msg_seq, this->seq); + if (msg->sadb_msg_seq < this->seq) + { + continue; + } + this->mutex_pfkey->unlock(this->mutex_pfkey); + return FAILED; + } + if (msg->sadb_msg_type != in->sadb_msg_type) + { + DBG2(DBG_KNL, "received PF_KEY message of wrong type," + " was %d expected %d, ignoring", + msg->sadb_msg_type, in->sadb_msg_type); + } + break; + } + + *out_len = len; + *out = (struct sadb_msg*)malloc(len); + memcpy(*out, buf, len); + + this->mutex_pfkey->unlock(this->mutex_pfkey); + + return SUCCESS; +} + +/** + * Send a message to the default PF_KEY socket. + */ +static status_t pfkey_send(private_kernel_klips_ipsec_t *this, + struct sadb_msg *in, struct sadb_msg **out, size_t *out_len) +{ + return pfkey_send_socket(this, this->socket, in, out, out_len); +} + +/** + * Send a message to the default PF_KEY socket and handle the response. + */ +static status_t pfkey_send_ack(private_kernel_klips_ipsec_t *this, struct sadb_msg *in) +{ + struct sadb_msg *out; + size_t len; + + if (pfkey_send(this, in, &out, &len) != SUCCESS) + { + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "PF_KEY error: %s (%d)", + strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + free(out); + return SUCCESS; +} + +/** + * Add an eroute to KLIPS + */ +static status_t add_eroute(private_kernel_klips_ipsec_t *this, u_int8_t satype, + u_int32_t spi, host_t *src, host_t *dst, host_t *src_net, u_int8_t src_mask, + host_t *dst_net, u_int8_t dst_mask, u_int8_t protocol, bool replace) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg = (struct sadb_msg*)request; + + memset(&request, 0, sizeof(request)); + + build_addflow(msg, satype, spi, src, dst, src_net, src_mask, + dst_net, dst_mask, protocol, replace); + + return pfkey_send_ack(this, msg); +} + +/** + * Delete an eroute fom KLIPS + */ +static status_t del_eroute(private_kernel_klips_ipsec_t *this, u_int8_t satype, + host_t *src_net, u_int8_t src_mask, host_t *dst_net, u_int8_t dst_mask, + u_int8_t protocol) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg = (struct sadb_msg*)request; + + memset(&request, 0, sizeof(request)); + + build_delflow(msg, satype, src_net, src_mask, dst_net, dst_mask, protocol); + + return pfkey_send_ack(this, msg); +} + +/** + * Process a SADB_ACQUIRE message from the kernel + */ +static void process_acquire(private_kernel_klips_ipsec_t *this, struct sadb_msg* msg) +{ + pfkey_msg_t response; + host_t *src, *dst; + u_int32_t reqid; + u_int8_t proto; + policy_entry_t *policy; + job_t *job; + + switch (msg->sadb_msg_satype) + { + case SADB_SATYPE_UNSPEC: + case SADB_SATYPE_ESP: + case SADB_SATYPE_AH: + break; + default: + /* acquire for AH/ESP only */ + return; + } + + if (parse_pfkey_message(msg, &response) != SUCCESS) + { + DBG1(DBG_KNL, "parsing SADB_ACQUIRE from kernel failed"); + return; + } + + /* KLIPS provides us only with the source and destination address, + * and the transport protocol of the packet that triggered the policy. + * we use this information to find a matching policy in our cache. + * because KLIPS installs a narrow %hold eroute covering only this information, + * we replace both the %trap and this %hold eroutes with a broader %hold + * eroute covering the whole policy */ + src = host_create_from_sockaddr((sockaddr_t*)(response.src + 1)); + dst = host_create_from_sockaddr((sockaddr_t*)(response.dst + 1)); + proto = response.src->sadb_address_proto; + if (!src || !dst || src->get_family(src) != dst->get_family(dst)) + { + DBG1(DBG_KNL, "received an SADB_ACQUIRE with invalid hosts"); + return; + } + + DBG2(DBG_KNL, "received an SADB_ACQUIRE for %H == %H : %d", src, dst, proto); + this->mutex->lock(this->mutex); + if (this->policies->find_first(this->policies, + (linked_list_match_t)policy_entry_match_byaddrs, + (void**)&policy, src, dst) != SUCCESS) + { + this->mutex->unlock(this->mutex); + DBG1(DBG_KNL, "received an SADB_ACQUIRE, but found no matching policy"); + return; + } + if ((reqid = policy->reqid) == 0) + { + this->mutex->unlock(this->mutex); + DBG1(DBG_KNL, "received an SADB_ACQUIRE, but policy is not routed anymore"); + return; + } + + /* add a broad %hold eroute that replaces the %trap eroute */ + add_eroute(this, SADB_X_SATYPE_INT, htonl(SPI_HOLD), NULL, NULL, + policy->src.net, policy->src.mask, policy->dst.net, policy->dst.mask, + policy->src.proto, TRUE); + + /* remove the narrow %hold eroute installed by KLIPS */ + del_eroute(this, SADB_X_SATYPE_INT, src, 32, dst, 32, proto); + + this->mutex->unlock(this->mutex); + + DBG2(DBG_KNL, "received an SADB_ACQUIRE"); + DBG1(DBG_KNL, "creating acquire job for CHILD_SA with reqid {%d}", reqid); + job = (job_t*)acquire_job_create(reqid, NULL, NULL); + charon->processor->queue_job(charon->processor, job); +} + +/** + * Process a SADB_X_NAT_T_NEW_MAPPING message from the kernel + */ +static void process_mapping(private_kernel_klips_ipsec_t *this, struct sadb_msg* msg) +{ + pfkey_msg_t response; + u_int32_t spi, reqid; + host_t *old_src, *new_src; + job_t *job; + + DBG2(DBG_KNL, "received an SADB_X_NAT_T_NEW_MAPPING"); + + if (parse_pfkey_message(msg, &response) != SUCCESS) + { + DBG1(DBG_KNL, "parsing SADB_X_NAT_T_NEW_MAPPING from kernel failed"); + return; + } + + spi = response.sa->sadb_sa_spi; + + if (proto_satype2ike(msg->sadb_msg_satype) == PROTO_ESP) + { + sa_entry_t *sa; + sockaddr_t *addr = (sockaddr_t*)(response.src + 1); + old_src = host_create_from_sockaddr(addr); + + this->mutex->lock(this->mutex); + if (!old_src || this->installed_sas->find_first(this->installed_sas, + (linked_list_match_t)sa_entry_match_encapbysrc, + (void**)&sa, &spi, old_src) != SUCCESS) + { + this->mutex->unlock(this->mutex); + DBG1(DBG_KNL, "received an SADB_X_NAT_T_NEW_MAPPING, but found no matching SA"); + return; + } + reqid = sa->reqid; + this->mutex->unlock(this->mutex); + + addr = (sockaddr_t*)(response.dst + 1); + switch (addr->sa_family) + { + case AF_INET: + { + struct sockaddr_in *sin = (struct sockaddr_in*)addr; + sin->sin_port = htons(response.x_natt_dport->sadb_x_nat_t_port_port); + } + case AF_INET6: + { + struct sockaddr_in6 *sin6 = (struct sockaddr_in6*)addr; + sin6->sin6_port = htons(response.x_natt_dport->sadb_x_nat_t_port_port); + } + default: + break; + } + new_src = host_create_from_sockaddr(addr); + if (new_src) + { + DBG1(DBG_KNL, "NAT mappings of ESP CHILD_SA with SPI %.8x and" + " reqid {%d} changed, queuing update job", ntohl(spi), reqid); + job = (job_t*)update_sa_job_create(reqid, new_src); + charon->processor->queue_job(charon->processor, job); + } + } +} + +/** + * Receives events from kernel + */ +static job_requeue_t receive_events(private_kernel_klips_ipsec_t *this) +{ + unsigned char buf[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg = (struct sadb_msg*)buf; + int len; + bool oldstate; + + oldstate = thread_cancelability(TRUE); + len = recv(this->socket_events, buf, sizeof(buf), 0); + thread_cancelability(oldstate); + + if (len < 0) + { + switch (errno) + { + case EINTR: + /* interrupted, try again */ + return JOB_REQUEUE_DIRECT; + case EAGAIN: + /* no data ready, select again */ + return JOB_REQUEUE_DIRECT; + default: + DBG1(DBG_KNL, "unable to receive from PF_KEY event socket"); + sleep(1); + return JOB_REQUEUE_FAIR; + } + } + + if (len < sizeof(struct sadb_msg) || + msg->sadb_msg_len < PFKEY_LEN(sizeof(struct sadb_msg))) + { + DBG2(DBG_KNL, "received corrupted PF_KEY message"); + return JOB_REQUEUE_DIRECT; + } + if (msg->sadb_msg_pid != 0) + { /* not from kernel. not interested, try another one */ + return JOB_REQUEUE_DIRECT; + } + if (msg->sadb_msg_len > len / PFKEY_ALIGNMENT) + { + DBG1(DBG_KNL, "buffer was too small to receive the complete PF_KEY message"); + return JOB_REQUEUE_DIRECT; + } + + switch (msg->sadb_msg_type) + { + case SADB_ACQUIRE: + process_acquire(this, msg); + break; + case SADB_EXPIRE: + /* SADB_EXPIRE events in KLIPS are only triggered by traffic (even for + * the time based limits). So if there is no traffic for a longer + * period than configured as hard limit, we wouldn't be able to rekey + * the SA and just receive the hard expire and thus delete the SA. + * To avoid this behavior and to make charon behave as with the other + * kernel plugins, we implement the expiration of SAs ourselves. */ + break; + case SADB_X_NAT_T_NEW_MAPPING: + process_mapping(this, msg); + break; + default: + break; + } + + return JOB_REQUEUE_DIRECT; +} + +typedef enum { + /** an SPI has expired */ + EXPIRE_TYPE_SPI, + /** a CHILD_SA has to be rekeyed */ + EXPIRE_TYPE_SOFT, + /** a CHILD_SA has to be deleted */ + EXPIRE_TYPE_HARD +} expire_type_t; + +typedef struct sa_expire_t sa_expire_t; + +struct sa_expire_t { + /** kernel interface */ + private_kernel_klips_ipsec_t *this; + /** the SPI of the expiring SA */ + u_int32_t spi; + /** the protocol of the expiring SA */ + protocol_id_t protocol; + /** the reqid of the expiring SA*/ + u_int32_t reqid; + /** what type of expire this is */ + expire_type_t type; +}; + +/** + * Called when an SA expires + */ +static job_requeue_t sa_expires(sa_expire_t *expire) +{ + private_kernel_klips_ipsec_t *this = expire->this; + protocol_id_t protocol = expire->protocol; + u_int32_t spi = expire->spi, reqid = expire->reqid; + bool hard = expire->type != EXPIRE_TYPE_SOFT; + sa_entry_t *cached_sa; + linked_list_t *list; + job_t *job; + + /* for an expired SPI we first check whether the CHILD_SA got installed + * in the meantime, for expired SAs we check whether they are still installed */ + list = expire->type == EXPIRE_TYPE_SPI ? this->allocated_spis : this->installed_sas; + + this->mutex->lock(this->mutex); + if (list->find_first(list, (linked_list_match_t)sa_entry_match_byid, + (void**)&cached_sa, &protocol, &spi, &reqid) != SUCCESS) + { + /* we found no entry: + * - for SPIs, a CHILD_SA has been installed + * - for SAs, the CHILD_SA has already been deleted */ + this->mutex->unlock(this->mutex); + return JOB_REQUEUE_NONE; + } + else + { + list->remove(list, cached_sa, NULL); + sa_entry_destroy(cached_sa); + } + this->mutex->unlock(this->mutex); + + DBG2(DBG_KNL, "%N CHILD_SA with SPI %.8x and reqid {%d} expired", + protocol_id_names, protocol, ntohl(spi), reqid); + + DBG1(DBG_KNL, "creating %s job for %N CHILD_SA with SPI %.8x and reqid {%d}", + hard ? "delete" : "rekey", protocol_id_names, + protocol, ntohl(spi), reqid); + if (hard) + { + job = (job_t*)delete_child_sa_job_create(reqid, protocol, spi); + } + else + { + job = (job_t*)rekey_child_sa_job_create(reqid, protocol, spi); + } + charon->processor->queue_job(charon->processor, job); + return JOB_REQUEUE_NONE; +} + +/** + * Schedule an expire job for an SA. Time is in seconds. + */ +static void schedule_expire(private_kernel_klips_ipsec_t *this, + protocol_id_t protocol, u_int32_t spi, + u_int32_t reqid, expire_type_t type, u_int32_t time) +{ + callback_job_t *job; + sa_expire_t *expire = malloc_thing(sa_expire_t); + expire->this = this; + expire->protocol = protocol; + expire->spi = spi; + expire->reqid = reqid; + expire->type = type; + job = callback_job_create((callback_job_cb_t)sa_expires, expire, free, NULL); + charon->scheduler->schedule_job(charon->scheduler, (job_t*)job, time); +} + +METHOD(kernel_ipsec_t, get_spi, status_t, + private_kernel_klips_ipsec_t *this, host_t *src, host_t *dst, + protocol_id_t protocol, u_int32_t reqid, u_int32_t *spi) +{ + /* we cannot use SADB_GETSPI because KLIPS does not allow us to set the + * NAT-T type in an SADB_UPDATE which we would have to use to update the + * implicitly created SA. + */ + rng_t *rng; + u_int32_t spi_gen; + + rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK); + if (!rng) + { + DBG1(DBG_KNL, "allocating SPI failed: no RNG"); + return FAILED; + } + rng->get_bytes(rng, sizeof(spi_gen), (void*)&spi_gen); + rng->destroy(rng); + + /* charon's SPIs lie within the range from 0xc0000000 to 0xcFFFFFFF */ + spi_gen = 0xc0000000 | (spi_gen & 0x0FFFFFFF); + + DBG2(DBG_KNL, "allocated SPI %.8x for %N SA between %#H..%#H", + spi_gen, protocol_id_names, protocol, src, dst); + + *spi = htonl(spi_gen); + + this->mutex->lock(this->mutex); + this->allocated_spis->insert_last(this->allocated_spis, + create_sa_entry(protocol, *spi, reqid, NULL, NULL, FALSE, TRUE)); + this->mutex->unlock(this->mutex); + schedule_expire(this, protocol, *spi, reqid, EXPIRE_TYPE_SPI, SPI_TIMEOUT); + + return SUCCESS; +} + +METHOD(kernel_ipsec_t, get_cpi, status_t, + private_kernel_klips_ipsec_t *this, host_t *src, host_t *dst, + u_int32_t reqid, u_int16_t *cpi) +{ + return FAILED; +} + +/** + * Add a pseudo IPIP SA for tunnel mode with KLIPS. + */ +static status_t add_ipip_sa(private_kernel_klips_ipsec_t *this, + host_t *src, host_t *dst, u_int32_t spi, u_int32_t reqid) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + struct sadb_sa *sa; + size_t len; + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "adding pseudo IPIP SA with SPI %.8x and reqid {%d}", ntohl(spi), reqid); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_ADD; + msg->sadb_msg_satype = SADB_X_SATYPE_IPIP; + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg); + sa->sadb_sa_exttype = SADB_EXT_SA; + sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa)); + sa->sadb_sa_spi = spi; + sa->sadb_sa_state = SADB_SASTATE_MATURE; + PFKEY_EXT_ADD(msg, sa); + + add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC); + add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST); + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to add pseudo IPIP SA with SPI %.8x", ntohl(spi)); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to add pseudo IPIP SA with SPI %.8x: %s (%d)", + ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + + free(out); + return SUCCESS; +} + +/** + * group the IPIP SA required for tunnel mode with the outer SA + */ +static status_t group_ipip_sa(private_kernel_klips_ipsec_t *this, + host_t *src, host_t *dst, u_int32_t spi, + protocol_id_t protocol, u_int32_t reqid) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + struct sadb_sa *sa; + struct sadb_x_satype *satype; + size_t len; + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "grouping SAs with SPI %.8x and reqid {%d}", ntohl(spi), reqid); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_X_GRPSA; + msg->sadb_msg_satype = SADB_X_SATYPE_IPIP; + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg); + sa->sadb_sa_exttype = SADB_EXT_SA; + sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa)); + sa->sadb_sa_spi = spi; + sa->sadb_sa_state = SADB_SASTATE_MATURE; + PFKEY_EXT_ADD(msg, sa); + + add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST); + + satype = (struct sadb_x_satype*)PFKEY_EXT_ADD_NEXT(msg); + satype->sadb_x_satype_exttype = SADB_X_EXT_SATYPE2; + satype->sadb_x_satype_len = PFKEY_LEN(sizeof(struct sadb_x_satype)); + satype->sadb_x_satype_satype = proto_ike2satype(protocol); + PFKEY_EXT_ADD(msg, satype); + + sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg); + sa->sadb_sa_exttype = SADB_X_EXT_SA2; + sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa)); + sa->sadb_sa_spi = spi; + sa->sadb_sa_state = SADB_SASTATE_MATURE; + PFKEY_EXT_ADD(msg, sa); + + add_addr_ext(msg, dst, SADB_X_EXT_ADDRESS_DST2); + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to group SAs with SPI %.8x", ntohl(spi)); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to group SAs with SPI %.8x: %s (%d)", + ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + + free(out); + return SUCCESS; +} + +METHOD(kernel_ipsec_t, add_sa, status_t, + private_kernel_klips_ipsec_t *this, host_t *src, host_t *dst, u_int32_t spi, + protocol_id_t protocol, u_int32_t reqid, lifetime_cfg_t *lifetime, + u_int16_t enc_alg, chunk_t enc_key, u_int16_t int_alg, chunk_t int_key, + ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi, bool encap, + bool inbound, traffic_selector_t *src_ts, traffic_selector_t *dst_ts) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + struct sadb_sa *sa; + struct sadb_key *key; + size_t len; + + if (inbound) + { + /* for inbound SAs we allocated an SPI via get_spi, so we first check + * whether that SPI has already expired (race condition) */ + sa_entry_t *alloc_spi; + this->mutex->lock(this->mutex); + if (this->allocated_spis->find_first(this->allocated_spis, + (linked_list_match_t)sa_entry_match_byid, (void**)&alloc_spi, + &protocol, &spi, &reqid) != SUCCESS) + { + this->mutex->unlock(this->mutex); + DBG1(DBG_KNL, "allocated SPI %.8x has already expired", ntohl(spi)); + return FAILED; + } + else + { + this->allocated_spis->remove(this->allocated_spis, alloc_spi, NULL); + sa_entry_destroy(alloc_spi); + } + this->mutex->unlock(this->mutex); + } + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "adding SAD entry with SPI %.8x and reqid {%d}", ntohl(spi), reqid); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_ADD; + msg->sadb_msg_satype = proto_ike2satype(protocol); + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg); + sa->sadb_sa_exttype = SADB_EXT_SA; + sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa)); + sa->sadb_sa_spi = spi; + sa->sadb_sa_state = SADB_SASTATE_MATURE; + sa->sadb_sa_replay = (protocol == IPPROTO_COMP) ? 0 : 32; + sa->sadb_sa_auth = lookup_algorithm(integrity_algs, int_alg); + sa->sadb_sa_encrypt = lookup_algorithm(encryption_algs, enc_alg); + PFKEY_EXT_ADD(msg, sa); + + add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC); + add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST); + + if (enc_alg != ENCR_UNDEFINED) + { + if (!sa->sadb_sa_encrypt) + { + DBG1(DBG_KNL, "algorithm %N not supported by kernel!", + encryption_algorithm_names, enc_alg); + return FAILED; + } + DBG2(DBG_KNL, " using encryption algorithm %N with key size %d", + encryption_algorithm_names, enc_alg, enc_key.len * 8); + + key = (struct sadb_key*)PFKEY_EXT_ADD_NEXT(msg); + key->sadb_key_exttype = SADB_EXT_KEY_ENCRYPT; + key->sadb_key_bits = enc_key.len * 8; + key->sadb_key_len = PFKEY_LEN(sizeof(struct sadb_key) + enc_key.len); + memcpy(key + 1, enc_key.ptr, enc_key.len); + + PFKEY_EXT_ADD(msg, key); + } + + if (int_alg != AUTH_UNDEFINED) + { + if (!sa->sadb_sa_auth) + { + DBG1(DBG_KNL, "algorithm %N not supported by kernel!", + integrity_algorithm_names, int_alg); + return FAILED; + } + DBG2(DBG_KNL, " using integrity algorithm %N with key size %d", + integrity_algorithm_names, int_alg, int_key.len * 8); + + key = (struct sadb_key*)PFKEY_EXT_ADD_NEXT(msg); + key->sadb_key_exttype = SADB_EXT_KEY_AUTH; + key->sadb_key_bits = int_key.len * 8; + key->sadb_key_len = PFKEY_LEN(sizeof(struct sadb_key) + int_key.len); + memcpy(key + 1, int_key.ptr, int_key.len); + + PFKEY_EXT_ADD(msg, key); + } + + if (ipcomp != IPCOMP_NONE) + { + /*TODO*/ + } + + if (encap) + { + add_encap_ext(msg, src, dst, FALSE); + } + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to add SAD entry with SPI %.8x", ntohl(spi)); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to add SAD entry with SPI %.8x: %s (%d)", + ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + free(out); + + /* for tunnel mode SAs we have to install an additional IPIP SA and + * group the two SAs together */ + if (mode == MODE_TUNNEL) + { + if (add_ipip_sa(this, src, dst, spi, reqid) != SUCCESS || + group_ipip_sa(this, src, dst, spi, protocol, reqid) != SUCCESS) + { + DBG1(DBG_KNL, "unable to add SAD entry with SPI %.8x", ntohl(spi)); + return FAILED; + } + } + + this->mutex->lock(this->mutex); + /* we cache this SA for two reasons: + * - in case an SADB_X_NAT_T_MAPPING_NEW event occurs (we need to find the reqid then) + * - to decide if an expired SA is still installed */ + this->installed_sas->insert_last(this->installed_sas, + create_sa_entry(protocol, spi, reqid, src, dst, encap, inbound)); + this->mutex->unlock(this->mutex); + + /* Although KLIPS supports SADB_EXT_LIFETIME_SOFT/HARD, we handle the lifetime + * of SAs manually in the plugin. Refer to the comments in receive_events() + * for details. */ + if (lifetime->time.rekey) + { + schedule_expire(this, protocol, spi, reqid, EXPIRE_TYPE_SOFT, lifetime->time.rekey); + } + + if (lifetime->time.life) + { + schedule_expire(this, protocol, spi, reqid, EXPIRE_TYPE_HARD, lifetime->time.life); + } + + return SUCCESS; +} + +METHOD(kernel_ipsec_t, update_sa, status_t, + private_kernel_klips_ipsec_t *this, u_int32_t spi, protocol_id_t protocol, + u_int16_t cpi, host_t *src, host_t *dst, host_t *new_src, host_t *new_dst, + bool encap, bool new_encap) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + struct sadb_sa *sa; + size_t len; + + /* we can't update the SA if any of the ip addresses have changed. + * that's because we can't use SADB_UPDATE and by deleting and readding the + * SA the sequence numbers would get lost */ + if (!src->ip_equals(src, new_src) || + !dst->ip_equals(dst, new_dst)) + { + DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x: address changes" + " are not supported", ntohl(spi)); + return NOT_SUPPORTED; + } + + /* because KLIPS does not allow us to change the NAT-T type in an SADB_UPDATE, + * we can't update the SA if the encap flag has changed since installing it */ + if (encap != new_encap) + { + DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x: change of UDP" + " encapsulation is not supported", ntohl(spi)); + return NOT_SUPPORTED; + } + + DBG2(DBG_KNL, "updating SAD entry with SPI %.8x from %#H..%#H to %#H..%#H", + ntohl(spi), src, dst, new_src, new_dst); + + memset(&request, 0, sizeof(request)); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_UPDATE; + msg->sadb_msg_satype = proto_ike2satype(protocol); + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg); + sa->sadb_sa_exttype = SADB_EXT_SA; + sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa)); + sa->sadb_sa_spi = spi; + sa->sadb_sa_encrypt = SADB_EALG_AESCBC; /* ignored */ + sa->sadb_sa_auth = SADB_AALG_SHA1HMAC; /* ignored */ + sa->sadb_sa_state = SADB_SASTATE_MATURE; + PFKEY_EXT_ADD(msg, sa); + + add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC); + add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST); + + add_encap_ext(msg, new_src, new_dst, TRUE); + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x", ntohl(spi)); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x: %s (%d)", + ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + free(out); + + return SUCCESS; +} + +METHOD(kernel_ipsec_t, query_sa, status_t, + private_kernel_klips_ipsec_t *this, host_t *src, host_t *dst, + u_int32_t spi, protocol_id_t protocol, u_int64_t *bytes) +{ + return NOT_SUPPORTED; /* TODO */ +} + +METHOD(kernel_ipsec_t, del_sa, status_t, + private_kernel_klips_ipsec_t *this, host_t *src, host_t *dst, + u_int32_t spi, protocol_id_t protocol, u_int16_t cpi) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + struct sadb_sa *sa; + sa_entry_t *cached_sa; + size_t len; + + memset(&request, 0, sizeof(request)); + + /* all grouped SAs are automatically deleted by KLIPS as soon as + * one of them is deleted, therefore we delete only the main one */ + DBG2(DBG_KNL, "deleting SAD entry with SPI %.8x", ntohl(spi)); + + this->mutex->lock(this->mutex); + /* this should not fail, but we don't care if it does, let the kernel decide + * whether this SA exists or not */ + if (this->installed_sas->find_first(this->installed_sas, + (linked_list_match_t)sa_entry_match_bydst, (void**)&cached_sa, + &protocol, &spi, dst) == SUCCESS) + { + this->installed_sas->remove(this->installed_sas, cached_sa, NULL); + sa_entry_destroy(cached_sa); + } + this->mutex->unlock(this->mutex); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_DELETE; + msg->sadb_msg_satype = proto_ike2satype(protocol); + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg); + sa->sadb_sa_exttype = SADB_EXT_SA; + sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa)); + sa->sadb_sa_spi = spi; + PFKEY_EXT_ADD(msg, sa); + + /* the kernel wants an SADB_EXT_ADDRESS_SRC to be present even though + * it is not used for anything. */ + add_anyaddr_ext(msg, dst->get_family(dst), SADB_EXT_ADDRESS_SRC); + add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST); + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to delete SAD entry with SPI %.8x", ntohl(spi)); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to delete SAD entry with SPI %.8x: %s (%d)", + ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + + DBG2(DBG_KNL, "deleted SAD entry with SPI %.8x", ntohl(spi)); + free(out); + return SUCCESS; +} + +METHOD(kernel_ipsec_t, add_policy, status_t, + private_kernel_klips_ipsec_t *this, host_t *src, host_t *dst, + traffic_selector_t *src_ts, traffic_selector_t *dst_ts, + policy_dir_t direction, u_int32_t spi, protocol_id_t protocol, + u_int32_t reqid, ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi, + bool routed) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + policy_entry_t *policy, *found = NULL; + u_int8_t satype; + size_t len; + + if (direction == POLICY_FWD) + { + /* no forward policies for KLIPS */ + return SUCCESS; + } + + /* tunnel mode policies direct the packets into the pseudo IPIP SA */ + satype = (mode == MODE_TUNNEL) ? SADB_X_SATYPE_IPIP : + proto_ike2satype(protocol); + + /* create a policy */ + policy = create_policy_entry(src_ts, dst_ts, direction); + + /* find a matching policy */ + this->mutex->lock(this->mutex); + if (this->policies->find_first(this->policies, + (linked_list_match_t)policy_entry_equals, (void**)&found, policy) == SUCCESS) + { + /* use existing policy */ + DBG2(DBG_KNL, "policy %R === %R %N already exists, increasing" + " refcount", src_ts, dst_ts, + policy_dir_names, direction); + policy_entry_destroy(policy); + policy = found; + } + else + { + /* apply the new one, if we have no such policy */ + this->policies->insert_last(this->policies, policy); + } + + if (routed) + { + /* we install this as a %trap eroute in the kernel, later to be + * triggered by packets matching the policy (-> ACQUIRE). */ + spi = htonl(SPI_TRAP); + satype = SADB_X_SATYPE_INT; + + /* the reqid is always set to the latest child SA that trapped this + * policy. we will need this reqid upon receiving an acquire. */ + policy->reqid = reqid; + + /* increase the trap counter */ + policy->trapcount++; + + if (policy->activecount) + { + /* we do not replace the current policy in the kernel while a + * policy is actively used */ + this->mutex->unlock(this->mutex); + return SUCCESS; + } + } + else + { + /* increase the reference counter */ + policy->activecount++; + } + + DBG2(DBG_KNL, "adding policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + + memset(&request, 0, sizeof(request)); + + msg = (struct sadb_msg*)request; + + /* FIXME: SADB_X_SAFLAGS_INFLOW may be required, if we add an inbound policy for an IPIP SA */ + build_addflow(msg, satype, spi, routed ? NULL : src, routed ? NULL : dst, + policy->src.net, policy->src.mask, policy->dst.net, policy->dst.mask, + policy->src.proto, found != NULL); + + this->mutex->unlock(this->mutex); + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to add policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to add policy %R === %R %N: %s (%d)", src_ts, dst_ts, + policy_dir_names, direction, + strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + free(out); + + this->mutex->lock(this->mutex); + + /* we try to find the policy again and install the route if needed */ + if (this->policies->find_last(this->policies, NULL, (void**)&policy) != SUCCESS) + { + this->mutex->unlock(this->mutex); + DBG2(DBG_KNL, "the policy %R === %R %N is already gone, ignoring", + src_ts, dst_ts, policy_dir_names, direction); + return SUCCESS; + } + + /* KLIPS requires a special route that directs traffic that matches this + * policy to one of the virtual ipsec interfaces. The virtual interface + * has to be attached to the physical one the traffic runs over. + * This is a special case of the source route we install in other kernel + * interfaces. + * In the following cases we do NOT install a source route (but just a + * regular route): + * - we are not in tunnel mode + * - we are using IPv6 (does not work correctly yet!) + * - routing is disabled via strongswan.conf + */ + if (policy->route == NULL && direction == POLICY_OUT) + { + char *iface; + ipsec_dev_t *dev; + route_entry_t *route = malloc_thing(route_entry_t); + route->src_ip = NULL; + + if (mode != MODE_TRANSPORT && src->get_family(src) != AF_INET6 && + this->install_routes) + { + charon->kernel_interface->get_address_by_ts(charon->kernel_interface, + src_ts, &route->src_ip); + } + + if (!route->src_ip) + { + route->src_ip = host_create_any(src->get_family(src)); + } + + /* find the virtual interface */ + iface = charon->kernel_interface->get_interface(charon->kernel_interface, + src); + if (find_ipsec_dev(this, iface, &dev) == SUCCESS) + { + /* above, we got either the name of a virtual or a physical + * interface. for both cases it means we already have the devices + * properly attached (assuming that we are exclusively attaching + * ipsec devices). */ + dev->refcount++; + } + else + { + /* there is no record of a mapping with the returned interface. + * thus, we attach the first free virtual interface we find to + * it. As above we assume we are the only client fiddling with + * ipsec devices. */ + if (this->ipsec_devices->find_first(this->ipsec_devices, + (linked_list_match_t)ipsec_dev_match_free, + (void**)&dev) == SUCCESS) + { + if (attach_ipsec_dev(dev->name, iface) == SUCCESS) + { + strncpy(dev->phys_name, iface, IFNAMSIZ); + dev->refcount = 1; + } + else + { + DBG1(DBG_KNL, "failed to attach virtual interface %s" + " to %s", dev->name, iface); + this->mutex->unlock(this->mutex); + free(iface); + return FAILED; + } + } + else + { + this->mutex->unlock(this->mutex); + DBG1(DBG_KNL, "failed to attach a virtual interface to %s: no" + " virtual interfaces left", iface); + free(iface); + return FAILED; + } + } + free(iface); + route->if_name = strdup(dev->name); + + /* get the nexthop to dst */ + route->gateway = charon->kernel_interface->get_nexthop( + charon->kernel_interface, dst); + route->dst_net = chunk_clone(policy->dst.net->get_address(policy->dst.net)); + route->prefixlen = policy->dst.mask; + + switch (charon->kernel_interface->add_route(charon->kernel_interface, + route->dst_net, route->prefixlen, route->gateway, + route->src_ip, route->if_name)) + { + default: + DBG1(DBG_KNL, "unable to install route for policy %R === %R", + src_ts, dst_ts); + /* FALL */ + case ALREADY_DONE: + /* route exists, do not uninstall */ + route_entry_destroy(route); + break; + case SUCCESS: + /* cache the installed route */ + policy->route = route; + break; + } + } + + this->mutex->unlock(this->mutex); + + return SUCCESS; +} + +METHOD(kernel_ipsec_t, query_policy, status_t, + private_kernel_klips_ipsec_t *this, traffic_selector_t *src_ts, + traffic_selector_t *dst_ts, policy_dir_t direction, u_int32_t *use_time) +{ + #define IDLE_PREFIX "idle=" + static const char *path_eroute = "/proc/net/ipsec_eroute"; + static const char *path_spi = "/proc/net/ipsec_spi"; + FILE *file; + char line[1024], src[INET6_ADDRSTRLEN + 9], dst[INET6_ADDRSTRLEN + 9]; + char *said = NULL, *pos; + policy_entry_t *policy, *found = NULL; + status_t status = FAILED; + + if (direction == POLICY_FWD) + { + /* we do not install forward policies */ + return FAILED; + } + + DBG2(DBG_KNL, "querying policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + + /* create a policy */ + policy = create_policy_entry(src_ts, dst_ts, direction); + + /* find a matching policy */ + this->mutex->lock(this->mutex); + if (this->policies->find_first(this->policies, + (linked_list_match_t)policy_entry_equals, (void**)&found, policy) != SUCCESS) + { + this->mutex->unlock(this->mutex); + DBG1(DBG_KNL, "querying policy %R === %R %N failed, not found", src_ts, + dst_ts, policy_dir_names, direction); + policy_entry_destroy(policy); + return NOT_FOUND; + } + policy_entry_destroy(policy); + policy = found; + + /* src and dst selectors in KLIPS are of the form NET_ADDR/NETBITS:PROTO */ + snprintf(src, sizeof(src), "%H/%d:%d", policy->src.net, policy->src.mask, + policy->src.proto); + src[sizeof(src) - 1] = '\0'; + snprintf(dst, sizeof(dst), "%H/%d:%d", policy->dst.net, policy->dst.mask, + policy->dst.proto); + dst[sizeof(dst) - 1] = '\0'; + + this->mutex->unlock(this->mutex); + + /* we try to find the matching eroute first */ + file = fopen(path_eroute, "r"); + if (file == NULL) + { + DBG1(DBG_KNL, "unable to query policy %R === %R %N: %s (%d)", src_ts, + dst_ts, policy_dir_names, direction, strerror(errno), errno); + return FAILED; + } + + /* read line by line where each line looks like: + * packets src -> dst => said */ + while (fgets(line, sizeof(line), file)) + { + enumerator_t *enumerator; + char *token; + int i = 0; + + enumerator = enumerator_create_token(line, " \t", " \t\n"); + while (enumerator->enumerate(enumerator, &token)) + { + switch (i++) + { + case 0: /* packets */ + continue; + case 1: /* src */ + if (streq(token, src)) + { + continue; + } + break; + case 2: /* -> */ + continue; + case 3: /* dst */ + if (streq(token, dst)) + { + continue; + } + break; + case 4: /* => */ + continue; + case 5: /* said */ + said = strdup(token); + break; + } + break; + } + enumerator->destroy(enumerator); + + if (i == 5) + { + /* eroute matched */ + break; + } + } + fclose(file); + + if (said == NULL) + { + DBG1(DBG_KNL, "unable to query policy %R === %R %N: found no matching" + " eroute", src_ts, dst_ts, policy_dir_names, direction); + return FAILED; + } + + /* compared with the one in the spi entry the SA ID from the eroute entry + * has an additional ":PROTO" appended, which we need to cut off */ + pos = strrchr(said, ':'); + *pos = '\0'; + + /* now we try to find the matching spi entry */ + file = fopen(path_spi, "r"); + if (file == NULL) + { + DBG1(DBG_KNL, "unable to query policy %R === %R %N: %s (%d)", src_ts, + dst_ts, policy_dir_names, direction, strerror(errno), errno); + return FAILED; + } + + while (fgets(line, sizeof(line), file)) + { + if (strneq(line, said, strlen(said))) + { + /* fine we found the correct line, now find the idle time */ + u_int32_t idle_time; + pos = strstr(line, IDLE_PREFIX); + if (pos == NULL) + { + /* no idle time, i.e. this SA has not been used yet */ + break; + } + if (sscanf(pos, IDLE_PREFIX"%u", &idle_time) <= 0) + { + /* idle time not valid */ + break; + } + + *use_time = time_monotonic(NULL) - idle_time; + status = SUCCESS; + break; + } + } + fclose(file); + free(said); + + return status; +} + +METHOD(kernel_ipsec_t, del_policy, status_t, + private_kernel_klips_ipsec_t *this, traffic_selector_t *src_ts, + traffic_selector_t *dst_ts, policy_dir_t direction, bool unrouted) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg = (struct sadb_msg*)request, *out; + policy_entry_t *policy, *found = NULL; + route_entry_t *route; + size_t len; + + if (direction == POLICY_FWD) + { + /* no forward policies for KLIPS */ + return SUCCESS; + } + + DBG2(DBG_KNL, "deleting policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + + /* create a policy */ + policy = create_policy_entry(src_ts, dst_ts, direction); + + /* find a matching policy */ + this->mutex->lock(this->mutex); + if (this->policies->find_first(this->policies, + (linked_list_match_t)policy_entry_equals, (void**)&found, policy) != SUCCESS) + { + this->mutex->unlock(this->mutex); + DBG1(DBG_KNL, "deleting policy %R === %R %N failed, not found", src_ts, + dst_ts, policy_dir_names, direction); + policy_entry_destroy(policy); + return NOT_FOUND; + } + policy_entry_destroy(policy); + + /* decrease appropriate counter */ + unrouted ? found->trapcount-- : found->activecount--; + + if (found->trapcount == 0) + { + /* if this policy is finally unrouted, we reset the reqid because it + * may still be actively used and there might be a pending acquire for + * this policy. */ + found->reqid = 0; + } + + if (found->activecount > 0) + { + /* is still used by SAs, keep in kernel */ + this->mutex->unlock(this->mutex); + DBG2(DBG_KNL, "policy still used by another CHILD_SA, not removed"); + return SUCCESS; + } + else if (found->activecount == 0 && found->trapcount > 0) + { + /* for a policy that is not used actively anymore, but is still trapped + * by another child SA we replace the current eroute with a %trap eroute */ + DBG2(DBG_KNL, "policy still routed by another CHILD_SA, not removed"); + memset(&request, 0, sizeof(request)); + build_addflow(msg, SADB_X_SATYPE_INT, htonl(SPI_TRAP), NULL, NULL, + found->src.net, found->src.mask, found->dst.net, + found->dst.mask, found->src.proto, TRUE); + this->mutex->unlock(this->mutex); + return pfkey_send_ack(this, msg); + } + + /* remove if last reference */ + this->policies->remove(this->policies, found, NULL); + policy = found; + + this->mutex->unlock(this->mutex); + + memset(&request, 0, sizeof(request)); + + build_delflow(msg, 0, policy->src.net, policy->src.mask, policy->dst.net, + policy->dst.mask, policy->src.proto); + + route = policy->route; + policy->route = NULL; + policy_entry_destroy(policy); + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to delete policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to delete policy %R === %R %N: %s (%d)", src_ts, + dst_ts, policy_dir_names, direction, + strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + free(out); + + if (route) + { + ipsec_dev_t *dev; + + if (charon->kernel_interface->del_route(charon->kernel_interface, + route->dst_net, route->prefixlen, route->gateway, + route->src_ip, route->if_name) != SUCCESS) + { + DBG1(DBG_KNL, "error uninstalling route installed with" + " policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + } + + /* we have to detach the ipsec interface from the physical one over which + * this SA ran (if it is not used by any other) */ + this->mutex->lock(this->mutex); + + if (find_ipsec_dev(this, route->if_name, &dev) == SUCCESS) + { + /* fine, we found a matching device object, let's check if we have + * to detach it. */ + if (--dev->refcount == 0) + { + if (detach_ipsec_dev(dev->name, dev->phys_name) != SUCCESS) + { + DBG1(DBG_KNL, "failed to detach virtual interface %s" + " from %s", dev->name, dev->phys_name); + } + dev->phys_name[0] = '\0'; + } + } + + this->mutex->unlock(this->mutex); + + route_entry_destroy(route); + } + + return SUCCESS; +} + +/** + * Initialize the list of ipsec devices + */ +static void init_ipsec_devices(private_kernel_klips_ipsec_t *this) +{ + int i, count = lib->settings->get_int(lib->settings, + "charon.plugins.kernel-klips.ipsec_dev_count", + DEFAULT_IPSEC_DEV_COUNT); + + for (i = 0; i < count; ++i) + { + ipsec_dev_t *dev = malloc_thing(ipsec_dev_t); + snprintf(dev->name, IFNAMSIZ, IPSEC_DEV_PREFIX"%d", i); + dev->name[IFNAMSIZ - 1] = '\0'; + dev->phys_name[0] = '\0'; + dev->refcount = 0; + this->ipsec_devices->insert_last(this->ipsec_devices, dev); + + /* detach any previously attached ipsec device */ + detach_ipsec_dev(dev->name, dev->phys_name); + } +} + +/** + * Register a socket for AQUIRE/EXPIRE messages + */ +static status_t register_pfkey_socket(private_kernel_klips_ipsec_t *this, u_int8_t satype) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + size_t len; + + memset(&request, 0, sizeof(request)); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_REGISTER; + msg->sadb_msg_satype = satype; + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + if (pfkey_send_socket(this, this->socket_events, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to register PF_KEY socket"); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to register PF_KEY socket: %s (%d)", + strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + free(out); + return SUCCESS; +} + +METHOD(kernel_ipsec_t, bypass_socket, bool, + private_kernel_klips_ipsec_t *this, int fd, int family) +{ + /* KLIPS does not need a bypass policy for IKE */ + return TRUE; +} + +METHOD(kernel_ipsec_t, destroy, void, + private_kernel_klips_ipsec_t *this) +{ + if (this->job) + { + this->job->cancel(this->job); + } + if (this->socket > 0) + { + close(this->socket); + } + if (this->socket_evnets > 0) + { + close(this->socket_events); + } + this->mutex_pfkey->destroy(this->mutex_pfkey); + this->mutex->destroy(this->mutex); + this->ipsec_devices->destroy_function(this->ipsec_devices, (void*)ipsec_dev_destroy); + this->installed_sas->destroy_function(this->installed_sas, (void*)sa_entry_destroy); + this->allocated_spis->destroy_function(this->allocated_spis, (void*)sa_entry_destroy); + this->policies->destroy_function(this->policies, (void*)policy_entry_destroy); + free(this); +} + +/* + * Described in header. + */ +kernel_klips_ipsec_t *kernel_klips_ipsec_create() +{ + private_kernel_klips_ipsec_t *this; + + INIT(this, + .public.interface = { + .get_spi = _get_spi, + .get_cpi = _get_cpi, + .add_sa = _add_sa, + .update_sa = _update_sa, + .query_sa = _query_sa, + .del_sa = _del_sa, + .add_policy = _add_policy, + .query_policy = _query_policy, + .del_policy = _del_policy, + .bypass_socket = _bypass_socket, + .destroy = _destroy, + }, + .policies = linked_list_create(), + .allocated_spis = linked_list_create(), + .installed_sas = linked_list_create(), + .ipsec_devices = linked_list_create(), + .mutex = mutex_create(MUTEX_TYPE_DEFAULT), + .mutex_pfkey = mutex_create(MUTEX_TYPE_DEFAULT), + .install_routes = lib->settings->get_bool(lib->settings, + "charon.install_routes", TRUE), + ); + + /* initialize ipsec devices */ + init_ipsec_devices(this); + + /* create a PF_KEY socket to communicate with the kernel */ + this->socket = socket(PF_KEY, SOCK_RAW, PF_KEY_V2); + if (this->socket <= 0) + { + DBG1(DBG_KNL, "unable to create PF_KEY socket"); + destroy(this); + return NULL; + } + + /* create a PF_KEY socket for ACQUIRE & EXPIRE */ + this->socket_events = socket(PF_KEY, SOCK_RAW, PF_KEY_V2); + if (this->socket_events <= 0) + { + DBG1(DBG_KNL, "unable to create PF_KEY event socket"); + destroy(this); + return NULL; + } + + /* register the event socket */ + if (register_pfkey_socket(this, SADB_SATYPE_ESP) != SUCCESS || + register_pfkey_socket(this, SADB_SATYPE_AH) != SUCCESS) + { + DBG1(DBG_KNL, "unable to register PF_KEY event socket"); + destroy(this); + return NULL; + } + + this->job = callback_job_create((callback_job_cb_t)receive_events, + this, NULL, NULL); + charon->processor->queue_job(charon->processor, (job_t*)this->job); + + return &this->public; +} + diff --git a/src/libcharon/plugins/kernel_klips/kernel_klips_ipsec.h b/src/libcharon/plugins/kernel_klips/kernel_klips_ipsec.h new file mode 100644 index 000000000..306ec0ada --- /dev/null +++ b/src/libcharon/plugins/kernel_klips/kernel_klips_ipsec.h @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup kernel_klips_ipsec_i kernel_klips_ipsec + * @{ @ingroup kernel_klips + */ + +#ifndef KERNEL_KLIPS_IPSEC_H_ +#define KERNEL_KLIPS_IPSEC_H_ + +#include <kernel/kernel_ipsec.h> + +typedef struct kernel_klips_ipsec_t kernel_klips_ipsec_t; + +/** + * Implementation of the kernel ipsec interface using PF_KEY. + */ +struct kernel_klips_ipsec_t { + + /** + * Implements kernel_ipsec_t interface + */ + kernel_ipsec_t interface; +}; + +/** + * Create a PF_KEY kernel ipsec interface instance. + * + * @return kernel_klips_ipsec_t instance + */ +kernel_klips_ipsec_t *kernel_klips_ipsec_create(); + +#endif /** KERNEL_KLIPS_IPSEC_H_ @}*/ diff --git a/src/libcharon/plugins/kernel_klips/kernel_klips_plugin.c b/src/libcharon/plugins/kernel_klips/kernel_klips_plugin.c new file mode 100644 index 000000000..fa5e9eb29 --- /dev/null +++ b/src/libcharon/plugins/kernel_klips/kernel_klips_plugin.c @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + + +#include "kernel_klips_plugin.h" + +#include "kernel_klips_ipsec.h" + +#include <daemon.h> + +typedef struct private_kernel_klips_plugin_t private_kernel_klips_plugin_t; + +/** + * private data of kernel PF_KEY plugin + */ +struct private_kernel_klips_plugin_t { + /** + * implements plugin interface + */ + kernel_klips_plugin_t public; +}; + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(private_kernel_klips_plugin_t *this) +{ + charon->kernel_interface->remove_ipsec_interface(charon->kernel_interface, (kernel_ipsec_constructor_t)kernel_klips_ipsec_create); + free(this); +} + +/* + * see header file + */ +plugin_t *kernel_klips_plugin_create() +{ + private_kernel_klips_plugin_t *this = malloc_thing(private_kernel_klips_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + charon->kernel_interface->add_ipsec_interface(charon->kernel_interface, (kernel_ipsec_constructor_t)kernel_klips_ipsec_create); + + return &this->public.plugin; +} diff --git a/src/libcharon/plugins/kernel_klips/kernel_klips_plugin.h b/src/libcharon/plugins/kernel_klips/kernel_klips_plugin.h new file mode 100644 index 000000000..6086217ad --- /dev/null +++ b/src/libcharon/plugins/kernel_klips/kernel_klips_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup kernel_klips kernel_klips + * @ingroup cplugins + * + * @defgroup kernel_klips_plugin kernel_klips_plugin + * @{ @ingroup kernel_klips + */ + +#ifndef KERNEL_KLIPS_PLUGIN_H_ +#define KERNEL_KLIPS_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct kernel_klips_plugin_t kernel_klips_plugin_t; + +/** + * PF_KEY kernel interface plugin + */ +struct kernel_klips_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** KERNEL_KLIPS_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/kernel_klips/pfkeyv2.h b/src/libcharon/plugins/kernel_klips/pfkeyv2.h new file mode 100644 index 000000000..20d1c298d --- /dev/null +++ b/src/libcharon/plugins/kernel_klips/pfkeyv2.h @@ -0,0 +1,322 @@ +/* +RFC 2367 PF_KEY Key Management API July 1998 + + +Appendix D: Sample Header File + +This file defines structures and symbols for the PF_KEY Version 2 +key management interface. It was written at the U.S. Naval Research +Laboratory. This file is in the public domain. The authors ask that +you leave this credit intact on any copies of this file. +*/ +#ifndef __PFKEY_V2_H +#define __PFKEY_V2_H 1 + +#define PF_KEY_V2 2 +#define PFKEYV2_REVISION 199806L + +#define SADB_RESERVED 0 +#define SADB_GETSPI 1 +#define SADB_UPDATE 2 +#define SADB_ADD 3 +#define SADB_DELETE 4 +#define SADB_GET 5 +#define SADB_ACQUIRE 6 +#define SADB_REGISTER 7 +#define SADB_EXPIRE 8 +#define SADB_FLUSH 9 +#define SADB_DUMP 10 +#define SADB_X_PROMISC 11 +#define SADB_X_PCHANGE 12 +#define SADB_X_GRPSA 13 +#define SADB_X_ADDFLOW 14 +#define SADB_X_DELFLOW 15 +#define SADB_X_DEBUG 16 +#define SADB_X_NAT_T_NEW_MAPPING 17 +#define SADB_MAX 17 + +struct sadb_msg { + uint8_t sadb_msg_version; + uint8_t sadb_msg_type; + uint8_t sadb_msg_errno; + uint8_t sadb_msg_satype; + uint16_t sadb_msg_len; + uint16_t sadb_msg_reserved; + uint32_t sadb_msg_seq; + uint32_t sadb_msg_pid; +}; + +struct sadb_ext { + uint16_t sadb_ext_len; + uint16_t sadb_ext_type; +}; + +struct sadb_sa { + uint16_t sadb_sa_len; + uint16_t sadb_sa_exttype; + uint32_t sadb_sa_spi; + uint8_t sadb_sa_replay; + uint8_t sadb_sa_state; + uint8_t sadb_sa_auth; + uint8_t sadb_sa_encrypt; + uint32_t sadb_sa_flags; +}; + +struct sadb_lifetime { + uint16_t sadb_lifetime_len; + uint16_t sadb_lifetime_exttype; + uint32_t sadb_lifetime_allocations; + uint64_t sadb_lifetime_bytes; + uint64_t sadb_lifetime_addtime; + uint64_t sadb_lifetime_usetime; + uint32_t sadb_x_lifetime_packets; + uint32_t sadb_x_lifetime_reserved; +}; + +struct sadb_address { + uint16_t sadb_address_len; + uint16_t sadb_address_exttype; + uint8_t sadb_address_proto; + uint8_t sadb_address_prefixlen; + uint16_t sadb_address_reserved; +}; + +struct sadb_key { + uint16_t sadb_key_len; + uint16_t sadb_key_exttype; + uint16_t sadb_key_bits; + uint16_t sadb_key_reserved; +}; + +struct sadb_ident { + uint16_t sadb_ident_len; + uint16_t sadb_ident_exttype; + uint16_t sadb_ident_type; + uint16_t sadb_ident_reserved; + uint64_t sadb_ident_id; +}; + +struct sadb_sens { + uint16_t sadb_sens_len; + uint16_t sadb_sens_exttype; + uint32_t sadb_sens_dpd; + uint8_t sadb_sens_sens_level; + uint8_t sadb_sens_sens_len; + uint8_t sadb_sens_integ_level; + uint8_t sadb_sens_integ_len; + uint32_t sadb_sens_reserved; +}; + +struct sadb_prop { + uint16_t sadb_prop_len; + uint16_t sadb_prop_exttype; + uint8_t sadb_prop_replay; + uint8_t sadb_prop_reserved[3]; +}; + +struct sadb_comb { + uint8_t sadb_comb_auth; + uint8_t sadb_comb_encrypt; + uint16_t sadb_comb_flags; + uint16_t sadb_comb_auth_minbits; + uint16_t sadb_comb_auth_maxbits; + uint16_t sadb_comb_encrypt_minbits; + uint16_t sadb_comb_encrypt_maxbits; + uint32_t sadb_comb_reserved; + uint32_t sadb_comb_soft_allocations; + uint32_t sadb_comb_hard_allocations; + uint64_t sadb_comb_soft_bytes; + uint64_t sadb_comb_hard_bytes; + uint64_t sadb_comb_soft_addtime; + uint64_t sadb_comb_hard_addtime; + uint64_t sadb_comb_soft_usetime; + uint64_t sadb_comb_hard_usetime; + uint32_t sadb_x_comb_soft_packets; + uint32_t sadb_x_comb_hard_packets; +}; + +struct sadb_supported { + uint16_t sadb_supported_len; + uint16_t sadb_supported_exttype; + uint32_t sadb_supported_reserved; +}; + +struct sadb_alg { + uint8_t sadb_alg_id; + uint8_t sadb_alg_ivlen; + uint16_t sadb_alg_minbits; + uint16_t sadb_alg_maxbits; + uint16_t sadb_alg_reserved; +}; + +struct sadb_spirange { + uint16_t sadb_spirange_len; + uint16_t sadb_spirange_exttype; + uint32_t sadb_spirange_min; + uint32_t sadb_spirange_max; + uint32_t sadb_spirange_reserved; +}; + +struct sadb_x_kmprivate { + uint16_t sadb_x_kmprivate_len; + uint16_t sadb_x_kmprivate_exttype; + uint32_t sadb_x_kmprivate_reserved; +}; + +struct sadb_x_satype { + uint16_t sadb_x_satype_len; + uint16_t sadb_x_satype_exttype; + uint8_t sadb_x_satype_satype; + uint8_t sadb_x_satype_reserved[3]; +}; + +struct sadb_x_debug { + uint16_t sadb_x_debug_len; + uint16_t sadb_x_debug_exttype; + uint32_t sadb_x_debug_tunnel; + uint32_t sadb_x_debug_netlink; + uint32_t sadb_x_debug_xform; + uint32_t sadb_x_debug_eroute; + uint32_t sadb_x_debug_spi; + uint32_t sadb_x_debug_radij; + uint32_t sadb_x_debug_esp; + uint32_t sadb_x_debug_ah; + uint32_t sadb_x_debug_rcv; + uint32_t sadb_x_debug_pfkey; + uint32_t sadb_x_debug_ipcomp; + uint32_t sadb_x_debug_verbose; + uint8_t sadb_x_debug_reserved[4]; +}; + +struct sadb_x_nat_t_type { + uint16_t sadb_x_nat_t_type_len; + uint16_t sadb_x_nat_t_type_exttype; + uint8_t sadb_x_nat_t_type_type; + uint8_t sadb_x_nat_t_type_reserved[3]; +}; +struct sadb_x_nat_t_port { + uint16_t sadb_x_nat_t_port_len; + uint16_t sadb_x_nat_t_port_exttype; + uint16_t sadb_x_nat_t_port_port; + uint16_t sadb_x_nat_t_port_reserved; +}; + +/* + * A protocol structure for passing through the transport level + * protocol. It contains more fields than are actually used/needed + * but it is this way to be compatible with the structure used in + * OpenBSD (http://www.openbsd.org/cgi-bin/cvsweb/src/sys/net/pfkeyv2.h) + */ +struct sadb_protocol { + uint16_t sadb_protocol_len; + uint16_t sadb_protocol_exttype; + uint8_t sadb_protocol_proto; + uint8_t sadb_protocol_direction; + uint8_t sadb_protocol_flags; + uint8_t sadb_protocol_reserved2; +}; + +#define SADB_EXT_RESERVED 0 +#define SADB_EXT_SA 1 +#define SADB_EXT_LIFETIME_CURRENT 2 +#define SADB_EXT_LIFETIME_HARD 3 +#define SADB_EXT_LIFETIME_SOFT 4 +#define SADB_EXT_ADDRESS_SRC 5 +#define SADB_EXT_ADDRESS_DST 6 +#define SADB_EXT_ADDRESS_PROXY 7 +#define SADB_EXT_KEY_AUTH 8 +#define SADB_EXT_KEY_ENCRYPT 9 +#define SADB_EXT_IDENTITY_SRC 10 +#define SADB_EXT_IDENTITY_DST 11 +#define SADB_EXT_SENSITIVITY 12 +#define SADB_EXT_PROPOSAL 13 +#define SADB_EXT_SUPPORTED_AUTH 14 +#define SADB_EXT_SUPPORTED_ENCRYPT 15 +#define SADB_EXT_SPIRANGE 16 +#define SADB_X_EXT_KMPRIVATE 17 +#define SADB_X_EXT_SATYPE2 18 +#define SADB_X_EXT_SA2 19 +#define SADB_X_EXT_ADDRESS_DST2 20 +#define SADB_X_EXT_ADDRESS_SRC_FLOW 21 +#define SADB_X_EXT_ADDRESS_DST_FLOW 22 +#define SADB_X_EXT_ADDRESS_SRC_MASK 23 +#define SADB_X_EXT_ADDRESS_DST_MASK 24 +#define SADB_X_EXT_DEBUG 25 +#define SADB_X_EXT_PROTOCOL 26 +#define SADB_X_EXT_NAT_T_TYPE 27 +#define SADB_X_EXT_NAT_T_SPORT 28 +#define SADB_X_EXT_NAT_T_DPORT 29 +#define SADB_X_EXT_NAT_T_OA 30 +#define SADB_EXT_MAX 30 + +/* SADB_X_DELFLOW required over and above SADB_X_SAFLAGS_CLEARFLOW */ +#define SADB_X_EXT_ADDRESS_DELFLOW \ + ( (1<<SADB_X_EXT_ADDRESS_SRC_FLOW) \ + | (1<<SADB_X_EXT_ADDRESS_DST_FLOW) \ + | (1<<SADB_X_EXT_ADDRESS_SRC_MASK) \ + | (1<<SADB_X_EXT_ADDRESS_DST_MASK)) + +#define SADB_SATYPE_UNSPEC 0 +#define SADB_SATYPE_AH 2 +#define SADB_SATYPE_ESP 3 +#define SADB_SATYPE_RSVP 5 +#define SADB_SATYPE_OSPFV2 6 +#define SADB_SATYPE_RIPV2 7 +#define SADB_SATYPE_MIP 8 +#define SADB_X_SATYPE_IPIP 9 +#define SADB_X_SATYPE_COMP 10 +#define SADB_X_SATYPE_INT 11 +#define SADB_SATYPE_MAX 11 + +#define SADB_SASTATE_LARVAL 0 +#define SADB_SASTATE_MATURE 1 +#define SADB_SASTATE_DYING 2 +#define SADB_SASTATE_DEAD 3 +#define SADB_SASTATE_MAX 3 + +#define SADB_SAFLAGS_PFS 1 +#define SADB_X_SAFLAGS_REPLACEFLOW 2 +#define SADB_X_SAFLAGS_CLEARFLOW 4 +#define SADB_X_SAFLAGS_INFLOW 8 + +#define SADB_AALG_NONE 0 +#define SADB_AALG_MD5HMAC 2 +#define SADB_AALG_SHA1HMAC 3 +#define SADB_AALG_SHA256_HMAC 5 +#define SADB_AALG_SHA384_HMAC 6 +#define SADB_AALG_SHA512_HMAC 7 +#define SADB_AALG_RIPEMD160HMAC 8 +#define SADB_AALG_MAX 15 + +#define SADB_EALG_NONE 0 +#define SADB_EALG_DESCBC 2 +#define SADB_EALG_3DESCBC 3 +#define SADB_EALG_BFCBC 7 +#define SADB_EALG_NULL 11 +#define SADB_EALG_AESCBC 12 +#define SADB_EALG_MAX 255 + +#define SADB_X_CALG_NONE 0 +#define SADB_X_CALG_OUI 1 +#define SADB_X_CALG_DEFLATE 2 +#define SADB_X_CALG_LZS 3 +#define SADB_X_CALG_V42BIS 4 +#define SADB_X_CALG_MAX 4 + +#define SADB_X_TALG_NONE 0 +#define SADB_X_TALG_IPv4_in_IPv4 1 +#define SADB_X_TALG_IPv6_in_IPv4 2 +#define SADB_X_TALG_IPv4_in_IPv6 3 +#define SADB_X_TALG_IPv6_in_IPv6 4 +#define SADB_X_TALG_MAX 4 + + +#define SADB_IDENTTYPE_RESERVED 0 +#define SADB_IDENTTYPE_PREFIX 1 +#define SADB_IDENTTYPE_FQDN 2 +#define SADB_IDENTTYPE_USERFQDN 3 +#define SADB_X_IDENTTYPE_CONNECTION 4 +#define SADB_IDENTTYPE_MAX 4 + +#define SADB_KEY_FLAGS_MAX 0 +#endif /* __PFKEY_V2_H */ diff --git a/src/libcharon/plugins/kernel_netlink/Makefile.am b/src/libcharon/plugins/kernel_netlink/Makefile.am new file mode 100644 index 000000000..2bb00ec0d --- /dev/null +++ b/src/libcharon/plugins/kernel_netlink/Makefile.am @@ -0,0 +1,20 @@ + +INCLUDES = -I${linux_headers} -I$(top_srcdir)/src/libstrongswan \ + -I$(top_srcdir)/src/libhydra -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic \ +-DROUTING_TABLE=${routing_table} \ +-DROUTING_TABLE_PRIO=${routing_table_prio} + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-kernel-netlink.la +else +plugin_LTLIBRARIES = libstrongswan-kernel-netlink.la +endif + +libstrongswan_kernel_netlink_la_SOURCES = \ + kernel_netlink_plugin.h kernel_netlink_plugin.c \ + kernel_netlink_ipsec.h kernel_netlink_ipsec.c kernel_netlink_net.h kernel_netlink_net.c \ + kernel_netlink_shared.h kernel_netlink_shared.c + +libstrongswan_kernel_netlink_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/kernel_netlink/Makefile.in b/src/libcharon/plugins/kernel_netlink/Makefile.in new file mode 100644 index 000000000..8c9965467 --- /dev/null +++ b/src/libcharon/plugins/kernel_netlink/Makefile.in @@ -0,0 +1,597 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src/libcharon/plugins/kernel_netlink +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/config/libtool.m4 \ + $(top_srcdir)/m4/config/ltoptions.m4 \ + $(top_srcdir)/m4/config/ltsugar.m4 \ + $(top_srcdir)/m4/config/ltversion.m4 \ + $(top_srcdir)/m4/config/lt~obsolete.m4 \ + $(top_srcdir)/m4/macros/with.m4 \ + $(top_srcdir)/m4/macros/enable-disable.m4 \ + $(top_srcdir)/configure.in +am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ + $(ACLOCAL_M4) +mkinstalldirs = $(install_sh) -d +CONFIG_CLEAN_FILES = +CONFIG_CLEAN_VPATH_FILES = +am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; +am__vpath_adj = case $$p in \ + $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \ + *) f=$$p;; \ + esac; +am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`; +am__install_max = 40 +am__nobase_strip_setup = \ + srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'` +am__nobase_strip = \ + for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||" +am__nobase_list = $(am__nobase_strip_setup); \ + for p in $$list; do echo "$$p $$p"; done | \ + sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \ + $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \ + if (++n[$$2] == $(am__install_max)) \ + { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \ + END { for (dir in files) print dir, files[dir] }' +am__base_list = \ + sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \ + sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g' +am__installdirs = "$(DESTDIR)$(plugindir)" +LTLIBRARIES = $(noinst_LTLIBRARIES) $(plugin_LTLIBRARIES) +libstrongswan_kernel_netlink_la_LIBADD = +am_libstrongswan_kernel_netlink_la_OBJECTS = kernel_netlink_plugin.lo \ + kernel_netlink_ipsec.lo kernel_netlink_net.lo \ + kernel_netlink_shared.lo +libstrongswan_kernel_netlink_la_OBJECTS = \ + $(am_libstrongswan_kernel_netlink_la_OBJECTS) +libstrongswan_kernel_netlink_la_LINK = $(LIBTOOL) --tag=CC \ + $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \ + $(AM_CFLAGS) $(CFLAGS) \ + $(libstrongswan_kernel_netlink_la_LDFLAGS) $(LDFLAGS) -o $@ +@MONOLITHIC_FALSE@am_libstrongswan_kernel_netlink_la_rpath = -rpath \ +@MONOLITHIC_FALSE@ $(plugindir) +@MONOLITHIC_TRUE@am_libstrongswan_kernel_netlink_la_rpath = +DEFAULT_INCLUDES = -I.@am__isrc@ +depcomp = $(SHELL) $(top_srcdir)/depcomp +am__depfiles_maybe = depfiles +am__mv = mv -f +COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \ + $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ + --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \ + $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +CCLD = $(CC) +LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ + --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \ + $(LDFLAGS) -o $@ +SOURCES = $(libstrongswan_kernel_netlink_la_SOURCES) +DIST_SOURCES = 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install-exec \ + install-exec-am install-html install-html-am install-info \ + install-info-am install-man install-pdf install-pdf-am \ + install-pluginLTLIBRARIES install-ps install-ps-am \ + install-strip installcheck installcheck-am installdirs \ + maintainer-clean maintainer-clean-generic mostlyclean \ + mostlyclean-compile mostlyclean-generic mostlyclean-libtool \ + pdf pdf-am ps ps-am tags uninstall uninstall-am \ + uninstall-pluginLTLIBRARIES + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/kernel_netlink/kernel_netlink_ipsec.c b/src/libcharon/plugins/kernel_netlink/kernel_netlink_ipsec.c new file mode 100644 index 000000000..1b8c1b879 --- /dev/null +++ b/src/libcharon/plugins/kernel_netlink/kernel_netlink_ipsec.c @@ -0,0 +1,2032 @@ +/* + * Copyright (C) 2006-2009 Tobias Brunner + * Copyright (C) 2005-2009 Martin Willi + * Copyright (C) 2008 Andreas Steffen + * Copyright (C) 2006-2007 Fabian Hartmann, Noah Heusser + * Copyright (C) 2006 Daniel Roethlisberger + * Copyright (C) 2005 Jan Hutter + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <sys/types.h> +#include <sys/socket.h> +#include <stdint.h> +#include <linux/ipsec.h> +#include <linux/netlink.h> +#include <linux/rtnetlink.h> +#include <linux/xfrm.h> +#include <linux/udp.h> +#include <unistd.h> +#include <time.h> +#include <errno.h> +#include <string.h> +#include <fcntl.h> + +#include "kernel_netlink_ipsec.h" +#include "kernel_netlink_shared.h" + +#include <daemon.h> +#include <threading/thread.h> +#include <threading/mutex.h> +#include <utils/hashtable.h> +#include <processing/jobs/callback_job.h> +#include <processing/jobs/acquire_job.h> +#include <processing/jobs/migrate_job.h> +#include <processing/jobs/rekey_child_sa_job.h> +#include <processing/jobs/delete_child_sa_job.h> +#include <processing/jobs/update_sa_job.h> + +/** required for Linux 2.6.26 kernel and later */ +#ifndef XFRM_STATE_AF_UNSPEC +#define XFRM_STATE_AF_UNSPEC 32 +#endif + +/** from linux/in.h */ +#ifndef IP_XFRM_POLICY +#define IP_XFRM_POLICY 17 +#endif + +/* missing on uclibc */ +#ifndef IPV6_XFRM_POLICY +#define IPV6_XFRM_POLICY 34 +#endif /*IPV6_XFRM_POLICY*/ + +/** default priority of installed policies */ +#define PRIO_LOW 3000 +#define PRIO_HIGH 2000 + +/** + * map the limit for bytes and packets to XFRM_INF per default + */ +#define XFRM_LIMIT(x) ((x) == 0 ? XFRM_INF : (x)) + +/** + * Create ORable bitfield of XFRM NL groups + */ +#define XFRMNLGRP(x) (1<<(XFRMNLGRP_##x-1)) + +/** + * returns a pointer to the first rtattr following the nlmsghdr *nlh and the + * 'usual' netlink data x like 'struct xfrm_usersa_info' + */ +#define XFRM_RTA(nlh, x) ((struct rtattr*)(NLMSG_DATA(nlh) + NLMSG_ALIGN(sizeof(x)))) +/** + * returns a pointer to the next rtattr following rta. + * !!! do not use this to parse messages. use RTA_NEXT and RTA_OK instead !!! + */ +#define XFRM_RTA_NEXT(rta) ((struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len))) +/** + * returns the total size of attached rta data + * (after 'usual' netlink data x like 'struct xfrm_usersa_info') + */ +#define XFRM_PAYLOAD(nlh, x) NLMSG_PAYLOAD(nlh, sizeof(x)) + +typedef struct kernel_algorithm_t kernel_algorithm_t; + +/** + * Mapping of IKEv2 kernel identifier to linux crypto API names + */ +struct kernel_algorithm_t { + /** + * Identifier specified in IKEv2 + */ + int ikev2; + + /** + * Name of the algorithm in linux crypto API + */ + char *name; +}; + +ENUM(xfrm_msg_names, XFRM_MSG_NEWSA, XFRM_MSG_MAPPING, + "XFRM_MSG_NEWSA", + "XFRM_MSG_DELSA", + "XFRM_MSG_GETSA", + "XFRM_MSG_NEWPOLICY", + "XFRM_MSG_DELPOLICY", + "XFRM_MSG_GETPOLICY", + "XFRM_MSG_ALLOCSPI", + "XFRM_MSG_ACQUIRE", + "XFRM_MSG_EXPIRE", + "XFRM_MSG_UPDPOLICY", + "XFRM_MSG_UPDSA", + "XFRM_MSG_POLEXPIRE", + "XFRM_MSG_FLUSHSA", + "XFRM_MSG_FLUSHPOLICY", + "XFRM_MSG_NEWAE", + "XFRM_MSG_GETAE", + "XFRM_MSG_REPORT", + "XFRM_MSG_MIGRATE", + "XFRM_MSG_NEWSADINFO", + "XFRM_MSG_GETSADINFO", + "XFRM_MSG_NEWSPDINFO", + "XFRM_MSG_GETSPDINFO", + "XFRM_MSG_MAPPING" +); + +ENUM(xfrm_attr_type_names, XFRMA_UNSPEC, XFRMA_KMADDRESS, + "XFRMA_UNSPEC", + "XFRMA_ALG_AUTH", + "XFRMA_ALG_CRYPT", + "XFRMA_ALG_COMP", + "XFRMA_ENCAP", + "XFRMA_TMPL", + "XFRMA_SA", + "XFRMA_POLICY", + "XFRMA_SEC_CTX", + "XFRMA_LTIME_VAL", + "XFRMA_REPLAY_VAL", + "XFRMA_REPLAY_THRESH", + "XFRMA_ETIMER_THRESH", + "XFRMA_SRCADDR", + "XFRMA_COADDR", + "XFRMA_LASTUSED", + "XFRMA_POLICY_TYPE", + "XFRMA_MIGRATE", + "XFRMA_ALG_AEAD", + "XFRMA_KMADDRESS" +); + +#define END_OF_LIST -1 + +/** + * Algorithms for encryption + */ +static kernel_algorithm_t encryption_algs[] = { +/* {ENCR_DES_IV64, "***" }, */ + {ENCR_DES, "des" }, + {ENCR_3DES, "des3_ede" }, +/* {ENCR_RC5, "***" }, */ +/* {ENCR_IDEA, "***" }, */ + {ENCR_CAST, "cast128" }, + {ENCR_BLOWFISH, "blowfish" }, +/* {ENCR_3IDEA, "***" }, */ +/* {ENCR_DES_IV32, "***" }, */ + {ENCR_NULL, "cipher_null" }, + {ENCR_AES_CBC, "aes" }, + {ENCR_AES_CTR, "rfc3686(ctr(aes))" }, + {ENCR_AES_CCM_ICV8, "rfc4309(ccm(aes))" }, + {ENCR_AES_CCM_ICV12, "rfc4309(ccm(aes))" }, + {ENCR_AES_CCM_ICV16, "rfc4309(ccm(aes))" }, + {ENCR_AES_GCM_ICV8, "rfc4106(gcm(aes))" }, + {ENCR_AES_GCM_ICV12, "rfc4106(gcm(aes))" }, + {ENCR_AES_GCM_ICV16, "rfc4106(gcm(aes))" }, + {ENCR_NULL_AUTH_AES_GMAC, "rfc4543(gcm(aes))" }, + {ENCR_CAMELLIA_CBC, "cbc(camellia)" }, +/* {ENCR_CAMELLIA_CTR, "***" }, */ +/* {ENCR_CAMELLIA_CCM_ICV8, "***" }, */ +/* {ENCR_CAMELLIA_CCM_ICV12, "***" }, */ +/* {ENCR_CAMELLIA_CCM_ICV16, "***" }, */ + {END_OF_LIST, NULL } +}; + +/** + * Algorithms for integrity protection + */ +static kernel_algorithm_t integrity_algs[] = { + {AUTH_HMAC_MD5_96, "md5" }, + {AUTH_HMAC_SHA1_96, "sha1" }, + {AUTH_HMAC_SHA2_256_96, "sha256" }, + {AUTH_HMAC_SHA2_256_128, "hmac(sha256)" }, + {AUTH_HMAC_SHA2_384_192, "hmac(sha384)" }, + {AUTH_HMAC_SHA2_512_256, "hmac(sha512)" }, +/* {AUTH_DES_MAC, "***" }, */ +/* {AUTH_KPDK_MD5, "***" }, */ + {AUTH_AES_XCBC_96, "xcbc(aes)" }, + {END_OF_LIST, NULL } +}; + +/** + * Algorithms for IPComp + */ +static kernel_algorithm_t compression_algs[] = { +/* {IPCOMP_OUI, "***" }, */ + {IPCOMP_DEFLATE, "deflate" }, + {IPCOMP_LZS, "lzs" }, + {IPCOMP_LZJH, "lzjh" }, + {END_OF_LIST, NULL } +}; + +/** + * Look up a kernel algorithm name and its key size + */ +static char* lookup_algorithm(kernel_algorithm_t *list, int ikev2) +{ + while (list->ikev2 != END_OF_LIST) + { + if (list->ikev2 == ikev2) + { + return list->name; + } + list++; + } + return NULL; +} + +typedef struct route_entry_t route_entry_t; + +/** + * installed routing entry + */ +struct route_entry_t { + /** Name of the interface the route is bound to */ + char *if_name; + + /** Source ip of the route */ + host_t *src_ip; + + /** gateway for this route */ + host_t *gateway; + + /** Destination net */ + chunk_t dst_net; + + /** Destination net prefixlen */ + u_int8_t prefixlen; +}; + +/** + * destroy an route_entry_t object + */ +static void route_entry_destroy(route_entry_t *this) +{ + free(this->if_name); + this->src_ip->destroy(this->src_ip); + DESTROY_IF(this->gateway); + chunk_free(&this->dst_net); + free(this); +} + +typedef struct policy_entry_t policy_entry_t; + +/** + * installed kernel policy. + */ +struct policy_entry_t { + + /** direction of this policy: in, out, forward */ + u_int8_t direction; + + /** parameters of installed policy */ + struct xfrm_selector sel; + + /** associated route installed for this policy */ + route_entry_t *route; + + /** by how many CHILD_SA's this policy is used */ + u_int refcount; +}; + +/** + * Hash function for policy_entry_t objects + */ +static u_int policy_hash(policy_entry_t *key) +{ + chunk_t chunk = chunk_create((void*)&key->sel, sizeof(struct xfrm_selector)); + return chunk_hash(chunk); +} + +/** + * Equality function for policy_entry_t objects + */ +static bool policy_equals(policy_entry_t *key, policy_entry_t *other_key) +{ + return memeq(&key->sel, &other_key->sel, sizeof(struct xfrm_selector)) && + key->direction == other_key->direction; +} + +typedef struct private_kernel_netlink_ipsec_t private_kernel_netlink_ipsec_t; + +/** + * Private variables and functions of kernel_netlink class. + */ +struct private_kernel_netlink_ipsec_t { + /** + * Public part of the kernel_netlink_t object. + */ + kernel_netlink_ipsec_t public; + + /** + * mutex to lock access to various lists + */ + mutex_t *mutex; + + /** + * Hash table of installed policies (policy_entry_t) + */ + hashtable_t *policies; + + /** + * job receiving netlink events + */ + callback_job_t *job; + + /** + * Netlink xfrm socket (IPsec) + */ + netlink_socket_t *socket_xfrm; + + /** + * netlink xfrm socket to receive acquire and expire events + */ + int socket_xfrm_events; + + /** + * whether to install routes along policies + */ + bool install_routes; +}; + +/** + * convert a IKEv2 specific protocol identifier to the kernel one + */ +static u_int8_t proto_ike2kernel(protocol_id_t proto) +{ + switch (proto) + { + case PROTO_ESP: + return IPPROTO_ESP; + case PROTO_AH: + return IPPROTO_AH; + default: + return proto; + } +} + +/** + * reverse of ike2kernel + */ +static protocol_id_t proto_kernel2ike(u_int8_t proto) +{ + switch (proto) + { + case IPPROTO_ESP: + return PROTO_ESP; + case IPPROTO_AH: + return PROTO_AH; + default: + return proto; + } +} + +/** + * convert the general ipsec mode to the one defined in xfrm.h + */ +static u_int8_t mode2kernel(ipsec_mode_t mode) +{ + switch (mode) + { + case MODE_TRANSPORT: + return XFRM_MODE_TRANSPORT; + case MODE_TUNNEL: + return XFRM_MODE_TUNNEL; + case MODE_BEET: + return XFRM_MODE_BEET; + default: + return mode; + } +} + +/** + * convert a host_t to a struct xfrm_address + */ +static void host2xfrm(host_t *host, xfrm_address_t *xfrm) +{ + chunk_t chunk = host->get_address(host); + memcpy(xfrm, chunk.ptr, min(chunk.len, sizeof(xfrm_address_t))); +} + +/** + * convert a struct xfrm_address to a host_t + */ +static host_t* xfrm2host(int family, xfrm_address_t *xfrm, u_int16_t port) +{ + chunk_t chunk; + + switch (family) + { + case AF_INET: + chunk = chunk_create((u_char*)&xfrm->a4, sizeof(xfrm->a4)); + break; + case AF_INET6: + chunk = chunk_create((u_char*)&xfrm->a6, sizeof(xfrm->a6)); + break; + default: + return NULL; + } + return host_create_from_chunk(family, chunk, ntohs(port)); +} + +/** + * convert a traffic selector address range to subnet and its mask. + */ +static void ts2subnet(traffic_selector_t* ts, + xfrm_address_t *net, u_int8_t *mask) +{ + host_t *net_host; + chunk_t net_chunk; + + ts->to_subnet(ts, &net_host, mask); + net_chunk = net_host->get_address(net_host); + memcpy(net, net_chunk.ptr, net_chunk.len); + net_host->destroy(net_host); +} + +/** + * convert a traffic selector port range to port/portmask + */ +static void ts2ports(traffic_selector_t* ts, + u_int16_t *port, u_int16_t *mask) +{ + /* linux does not seem to accept complex portmasks. Only + * any or a specific port is allowed. We set to any, if we have + * a port range, or to a specific, if we have one port only. + */ + u_int16_t from, to; + + from = ts->get_from_port(ts); + to = ts->get_to_port(ts); + + if (from == to) + { + *port = htons(from); + *mask = ~0; + } + else + { + *port = 0; + *mask = 0; + } +} + +/** + * convert a pair of traffic_selectors to a xfrm_selector + */ +static struct xfrm_selector ts2selector(traffic_selector_t *src, + traffic_selector_t *dst) +{ + struct xfrm_selector sel; + + memset(&sel, 0, sizeof(sel)); + sel.family = (src->get_type(src) == TS_IPV4_ADDR_RANGE) ? AF_INET : AF_INET6; + /* src or dest proto may be "any" (0), use more restrictive one */ + sel.proto = max(src->get_protocol(src), dst->get_protocol(dst)); + ts2subnet(dst, &sel.daddr, &sel.prefixlen_d); + ts2subnet(src, &sel.saddr, &sel.prefixlen_s); + ts2ports(dst, &sel.dport, &sel.dport_mask); + ts2ports(src, &sel.sport, &sel.sport_mask); + sel.ifindex = 0; + sel.user = 0; + + return sel; +} + +/** + * convert a xfrm_selector to a src|dst traffic_selector + */ +static traffic_selector_t* selector2ts(struct xfrm_selector *sel, bool src) +{ + u_char *addr; + u_int8_t prefixlen; + u_int16_t port = 0; + host_t *host = NULL; + + if (src) + { + addr = (u_char*)&sel->saddr; + prefixlen = sel->prefixlen_s; + if (sel->sport_mask) + { + port = htons(sel->sport); + } + } + else + { + addr = (u_char*)&sel->daddr; + prefixlen = sel->prefixlen_d; + if (sel->dport_mask) + { + port = htons(sel->dport); + } + } + + /* The Linux 2.6 kernel does not set the selector's family field, + * so as a kludge we additionally test the prefix length. + */ + if (sel->family == AF_INET || sel->prefixlen_s == 32) + { + host = host_create_from_chunk(AF_INET, chunk_create(addr, 4), 0); + } + else if (sel->family == AF_INET6 || sel->prefixlen_s == 128) + { + host = host_create_from_chunk(AF_INET6, chunk_create(addr, 16), 0); + } + + if (host) + { + return traffic_selector_create_from_subnet(host, prefixlen, + sel->proto, port); + } + return NULL; +} + +/** + * process a XFRM_MSG_ACQUIRE from kernel + */ +static void process_acquire(private_kernel_netlink_ipsec_t *this, struct nlmsghdr *hdr) +{ + u_int32_t reqid = 0; + int proto = 0; + traffic_selector_t *src_ts, *dst_ts; + struct xfrm_user_acquire *acquire; + struct rtattr *rta; + size_t rtasize; + job_t *job; + + acquire = (struct xfrm_user_acquire*)NLMSG_DATA(hdr); + rta = XFRM_RTA(hdr, struct xfrm_user_acquire); + rtasize = XFRM_PAYLOAD(hdr, struct xfrm_user_acquire); + + DBG2(DBG_KNL, "received a XFRM_MSG_ACQUIRE"); + + while (RTA_OK(rta, rtasize)) + { + DBG2(DBG_KNL, " %N", xfrm_attr_type_names, rta->rta_type); + + if (rta->rta_type == XFRMA_TMPL) + { + struct xfrm_user_tmpl* tmpl; + + tmpl = (struct xfrm_user_tmpl*)RTA_DATA(rta); + reqid = tmpl->reqid; + proto = tmpl->id.proto; + } + rta = RTA_NEXT(rta, rtasize); + } + switch (proto) + { + case 0: + case IPPROTO_ESP: + case IPPROTO_AH: + break; + default: + /* acquire for AH/ESP only, not for IPCOMP */ + return; + } + src_ts = selector2ts(&acquire->sel, TRUE); + dst_ts = selector2ts(&acquire->sel, FALSE); + DBG1(DBG_KNL, "creating acquire job for policy %R === %R with reqid {%u}", + src_ts, dst_ts, reqid); + job = (job_t*)acquire_job_create(reqid, src_ts, dst_ts); + charon->processor->queue_job(charon->processor, job); +} + +/** + * process a XFRM_MSG_EXPIRE from kernel + */ +static void process_expire(private_kernel_netlink_ipsec_t *this, struct nlmsghdr *hdr) +{ + job_t *job; + protocol_id_t protocol; + u_int32_t spi, reqid; + struct xfrm_user_expire *expire; + + expire = (struct xfrm_user_expire*)NLMSG_DATA(hdr); + protocol = proto_kernel2ike(expire->state.id.proto); + spi = expire->state.id.spi; + reqid = expire->state.reqid; + + DBG2(DBG_KNL, "received a XFRM_MSG_EXPIRE"); + + if (protocol != PROTO_ESP && protocol != PROTO_AH) + { + DBG2(DBG_KNL, "ignoring XFRM_MSG_EXPIRE for SA with SPI %.8x and reqid {%u} " + "which is not a CHILD_SA", ntohl(spi), reqid); + return; + } + + DBG1(DBG_KNL, "creating %s job for %N CHILD_SA with SPI %.8x and reqid {%d}", + expire->hard ? "delete" : "rekey", protocol_id_names, + protocol, ntohl(spi), reqid); + if (expire->hard) + { + job = (job_t*)delete_child_sa_job_create(reqid, protocol, spi); + } + else + { + job = (job_t*)rekey_child_sa_job_create(reqid, protocol, spi); + } + charon->processor->queue_job(charon->processor, job); +} + +/** + * process a XFRM_MSG_MIGRATE from kernel + */ +static void process_migrate(private_kernel_netlink_ipsec_t *this, struct nlmsghdr *hdr) +{ + traffic_selector_t *src_ts, *dst_ts; + host_t *local = NULL, *remote = NULL; + host_t *old_src = NULL, *old_dst = NULL; + host_t *new_src = NULL, *new_dst = NULL; + struct xfrm_userpolicy_id *policy_id; + struct rtattr *rta; + size_t rtasize; + u_int32_t reqid = 0; + policy_dir_t dir; + job_t *job; + + policy_id = (struct xfrm_userpolicy_id*)NLMSG_DATA(hdr); + rta = XFRM_RTA(hdr, struct xfrm_userpolicy_id); + rtasize = XFRM_PAYLOAD(hdr, struct xfrm_userpolicy_id); + + DBG2(DBG_KNL, "received a XFRM_MSG_MIGRATE"); + + src_ts = selector2ts(&policy_id->sel, TRUE); + dst_ts = selector2ts(&policy_id->sel, FALSE); + dir = (policy_dir_t)policy_id->dir; + + DBG2(DBG_KNL, " policy: %R === %R %N", src_ts, dst_ts, policy_dir_names); + + while (RTA_OK(rta, rtasize)) + { + DBG2(DBG_KNL, " %N", xfrm_attr_type_names, rta->rta_type); + if (rta->rta_type == XFRMA_KMADDRESS) + { + struct xfrm_user_kmaddress *kmaddress; + + kmaddress = (struct xfrm_user_kmaddress*)RTA_DATA(rta); + local = xfrm2host(kmaddress->family, &kmaddress->local, 0); + remote = xfrm2host(kmaddress->family, &kmaddress->remote, 0); + DBG2(DBG_KNL, " kmaddress: %H...%H", local, remote); + } + else if (rta->rta_type == XFRMA_MIGRATE) + { + struct xfrm_user_migrate *migrate; + protocol_id_t proto; + + migrate = (struct xfrm_user_migrate*)RTA_DATA(rta); + old_src = xfrm2host(migrate->old_family, &migrate->old_saddr, 0); + old_dst = xfrm2host(migrate->old_family, &migrate->old_daddr, 0); + new_src = xfrm2host(migrate->new_family, &migrate->new_saddr, 0); + new_dst = xfrm2host(migrate->new_family, &migrate->new_daddr, 0); + proto = proto_kernel2ike(migrate->proto); + reqid = migrate->reqid; + DBG2(DBG_KNL, " migrate %N %H...%H to %H...%H, reqid {%u}", + protocol_id_names, proto, old_src, old_dst, + new_src, new_dst, reqid); + DESTROY_IF(old_src); + DESTROY_IF(old_dst); + DESTROY_IF(new_src); + DESTROY_IF(new_dst); + } + rta = RTA_NEXT(rta, rtasize); + } + + if (src_ts && dst_ts && local && remote) + { + DBG1(DBG_KNL, "creating migrate job for policy %R === %R %N with reqid {%u}", + src_ts, dst_ts, policy_dir_names, dir, reqid, local); + job = (job_t*)migrate_job_create(reqid, src_ts, dst_ts, dir, + local, remote); + charon->processor->queue_job(charon->processor, job); + } + else + { + DESTROY_IF(src_ts); + DESTROY_IF(dst_ts); + DESTROY_IF(local); + DESTROY_IF(remote); + } +} + +/** + * process a XFRM_MSG_MAPPING from kernel + */ +static void process_mapping(private_kernel_netlink_ipsec_t *this, + struct nlmsghdr *hdr) +{ + job_t *job; + u_int32_t spi, reqid; + struct xfrm_user_mapping *mapping; + host_t *host; + + mapping = (struct xfrm_user_mapping*)NLMSG_DATA(hdr); + spi = mapping->id.spi; + reqid = mapping->reqid; + + DBG2(DBG_KNL, "received a XFRM_MSG_MAPPING"); + + if (proto_kernel2ike(mapping->id.proto) == PROTO_ESP) + { + host = xfrm2host(mapping->id.family, &mapping->new_saddr, + mapping->new_sport); + if (host) + { + DBG1(DBG_KNL, "NAT mappings of ESP CHILD_SA with SPI %.8x and " + "reqid {%u} changed, queuing update job", ntohl(spi), reqid); + job = (job_t*)update_sa_job_create(reqid, host); + charon->processor->queue_job(charon->processor, job); + } + } +} + +/** + * Receives events from kernel + */ +static job_requeue_t receive_events(private_kernel_netlink_ipsec_t *this) +{ + char response[1024]; + struct nlmsghdr *hdr = (struct nlmsghdr*)response; + struct sockaddr_nl addr; + socklen_t addr_len = sizeof(addr); + int len; + bool oldstate; + + oldstate = thread_cancelability(TRUE); + len = recvfrom(this->socket_xfrm_events, response, sizeof(response), 0, + (struct sockaddr*)&addr, &addr_len); + thread_cancelability(oldstate); + + if (len < 0) + { + switch (errno) + { + case EINTR: + /* interrupted, try again */ + return JOB_REQUEUE_DIRECT; + case EAGAIN: + /* no data ready, select again */ + return JOB_REQUEUE_DIRECT; + default: + DBG1(DBG_KNL, "unable to receive from xfrm event socket"); + sleep(1); + return JOB_REQUEUE_FAIR; + } + } + + if (addr.nl_pid != 0) + { /* not from kernel. not interested, try another one */ + return JOB_REQUEUE_DIRECT; + } + + while (NLMSG_OK(hdr, len)) + { + switch (hdr->nlmsg_type) + { + case XFRM_MSG_ACQUIRE: + process_acquire(this, hdr); + break; + case XFRM_MSG_EXPIRE: + process_expire(this, hdr); + break; + case XFRM_MSG_MIGRATE: + process_migrate(this, hdr); + break; + case XFRM_MSG_MAPPING: + process_mapping(this, hdr); + break; + default: + DBG1(DBG_KNL, "received unknown event from xfrm event socket: %d", hdr->nlmsg_type); + break; + } + hdr = NLMSG_NEXT(hdr, len); + } + return JOB_REQUEUE_DIRECT; +} + +/** + * Get an SPI for a specific protocol from the kernel. + */ +static status_t get_spi_internal(private_kernel_netlink_ipsec_t *this, + host_t *src, host_t *dst, u_int8_t proto, u_int32_t min, u_int32_t max, + u_int32_t reqid, u_int32_t *spi) +{ + netlink_buf_t request; + struct nlmsghdr *hdr, *out; + struct xfrm_userspi_info *userspi; + u_int32_t received_spi = 0; + size_t len; + + memset(&request, 0, sizeof(request)); + + hdr = (struct nlmsghdr*)request; + hdr->nlmsg_flags = NLM_F_REQUEST; + hdr->nlmsg_type = XFRM_MSG_ALLOCSPI; + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct xfrm_userspi_info)); + + userspi = (struct xfrm_userspi_info*)NLMSG_DATA(hdr); + host2xfrm(src, &userspi->info.saddr); + host2xfrm(dst, &userspi->info.id.daddr); + userspi->info.id.proto = proto; + userspi->info.mode = XFRM_MODE_TUNNEL; + userspi->info.reqid = reqid; + userspi->info.family = src->get_family(src); + userspi->min = min; + userspi->max = max; + + if (this->socket_xfrm->send(this->socket_xfrm, hdr, &out, &len) == SUCCESS) + { + hdr = out; + while (NLMSG_OK(hdr, len)) + { + switch (hdr->nlmsg_type) + { + case XFRM_MSG_NEWSA: + { + struct xfrm_usersa_info* usersa = NLMSG_DATA(hdr); + received_spi = usersa->id.spi; + break; + } + case NLMSG_ERROR: + { + struct nlmsgerr *err = NLMSG_DATA(hdr); + + DBG1(DBG_KNL, "allocating SPI failed: %s (%d)", + strerror(-err->error), -err->error); + break; + } + default: + hdr = NLMSG_NEXT(hdr, len); + continue; + case NLMSG_DONE: + break; + } + break; + } + free(out); + } + + if (received_spi == 0) + { + return FAILED; + } + + *spi = received_spi; + return SUCCESS; +} + +METHOD(kernel_ipsec_t, get_spi, status_t, + private_kernel_netlink_ipsec_t *this, host_t *src, host_t *dst, + protocol_id_t protocol, u_int32_t reqid, u_int32_t *spi) +{ + DBG2(DBG_KNL, "getting SPI for reqid {%u}", reqid); + + if (get_spi_internal(this, src, dst, proto_ike2kernel(protocol), + 0xc0000000, 0xcFFFFFFF, reqid, spi) != SUCCESS) + { + DBG1(DBG_KNL, "unable to get SPI for reqid {%u}", reqid); + return FAILED; + } + + DBG2(DBG_KNL, "got SPI %.8x for reqid {%u}", ntohl(*spi), reqid); + + return SUCCESS; +} + +METHOD(kernel_ipsec_t, get_cpi, status_t, + private_kernel_netlink_ipsec_t *this, host_t *src, host_t *dst, + u_int32_t reqid, u_int16_t *cpi) +{ + u_int32_t received_spi = 0; + + DBG2(DBG_KNL, "getting CPI for reqid {%u}", reqid); + + if (get_spi_internal(this, src, dst, + IPPROTO_COMP, 0x100, 0xEFFF, reqid, &received_spi) != SUCCESS) + { + DBG1(DBG_KNL, "unable to get CPI for reqid {%u}", reqid); + return FAILED; + } + + *cpi = htons((u_int16_t)ntohl(received_spi)); + + DBG2(DBG_KNL, "got CPI %.4x for reqid {%u}", ntohs(*cpi), reqid); + + return SUCCESS; +} + +METHOD(kernel_ipsec_t, add_sa, status_t, + private_kernel_netlink_ipsec_t *this, host_t *src, host_t *dst, + u_int32_t spi, protocol_id_t protocol, u_int32_t reqid, + lifetime_cfg_t *lifetime, u_int16_t enc_alg, chunk_t enc_key, + u_int16_t int_alg, chunk_t int_key, ipsec_mode_t mode, u_int16_t ipcomp, + u_int16_t cpi, bool encap, bool inbound, traffic_selector_t* src_ts, + traffic_selector_t* dst_ts) +{ + netlink_buf_t request; + char *alg_name; + struct nlmsghdr *hdr; + struct xfrm_usersa_info *sa; + u_int16_t icv_size = 64; + + /* if IPComp is used, we install an additional IPComp SA. if the cpi is 0 + * we are in the recursive call below */ + if (ipcomp != IPCOMP_NONE && cpi != 0) + { + lifetime_cfg_t lft = {{0,0,0},{0,0,0},{0,0,0}}; + add_sa(this, src, dst, htonl(ntohs(cpi)), IPPROTO_COMP, reqid, &lft, + ENCR_UNDEFINED, chunk_empty, AUTH_UNDEFINED, chunk_empty, + mode, ipcomp, 0, FALSE, inbound, NULL, NULL); + ipcomp = IPCOMP_NONE; + /* use transport mode ESP SA, IPComp uses tunnel mode */ + mode = MODE_TRANSPORT; + } + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "adding SAD entry with SPI %.8x and reqid {%u}", + ntohl(spi), reqid); + + hdr = (struct nlmsghdr*)request; + hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; + hdr->nlmsg_type = inbound ? XFRM_MSG_UPDSA : XFRM_MSG_NEWSA; + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct xfrm_usersa_info)); + + sa = (struct xfrm_usersa_info*)NLMSG_DATA(hdr); + host2xfrm(src, &sa->saddr); + host2xfrm(dst, &sa->id.daddr); + sa->id.spi = spi; + sa->id.proto = proto_ike2kernel(protocol); + sa->family = src->get_family(src); + sa->mode = mode2kernel(mode); + switch (mode) + { + case MODE_TUNNEL: + sa->flags |= XFRM_STATE_AF_UNSPEC; + break; + case MODE_BEET: + if(src_ts && dst_ts) + { + sa->sel = ts2selector(src_ts, dst_ts); + } + break; + default: + break; + } + + sa->replay_window = (protocol == IPPROTO_COMP) ? 0 : 32; + sa->reqid = reqid; + sa->lft.soft_byte_limit = XFRM_LIMIT(lifetime->bytes.rekey); + sa->lft.hard_byte_limit = XFRM_LIMIT(lifetime->bytes.life); + sa->lft.soft_packet_limit = XFRM_LIMIT(lifetime->packets.rekey); + sa->lft.hard_packet_limit = XFRM_LIMIT(lifetime->packets.life); + /* we use lifetimes since added, not since used */ + sa->lft.soft_add_expires_seconds = lifetime->time.rekey; + sa->lft.hard_add_expires_seconds = lifetime->time.life; + sa->lft.soft_use_expires_seconds = 0; + sa->lft.hard_use_expires_seconds = 0; + + struct rtattr *rthdr = XFRM_RTA(hdr, struct xfrm_usersa_info); + + switch (enc_alg) + { + case ENCR_UNDEFINED: + /* no encryption */ + break; + case ENCR_AES_CCM_ICV16: + case ENCR_AES_GCM_ICV16: + case ENCR_NULL_AUTH_AES_GMAC: + case ENCR_CAMELLIA_CCM_ICV16: + icv_size += 32; + /* FALL */ + case ENCR_AES_CCM_ICV12: + case ENCR_AES_GCM_ICV12: + case ENCR_CAMELLIA_CCM_ICV12: + icv_size += 32; + /* FALL */ + case ENCR_AES_CCM_ICV8: + case ENCR_AES_GCM_ICV8: + case ENCR_CAMELLIA_CCM_ICV8: + { + struct xfrm_algo_aead *algo; + + alg_name = lookup_algorithm(encryption_algs, enc_alg); + if (alg_name == NULL) + { + DBG1(DBG_KNL, "algorithm %N not supported by kernel!", + encryption_algorithm_names, enc_alg); + return FAILED; + } + DBG2(DBG_KNL, " using encryption algorithm %N with key size %d", + encryption_algorithm_names, enc_alg, enc_key.len * 8); + + rthdr->rta_type = XFRMA_ALG_AEAD; + rthdr->rta_len = RTA_LENGTH(sizeof(struct xfrm_algo_aead) + enc_key.len); + hdr->nlmsg_len += rthdr->rta_len; + if (hdr->nlmsg_len > sizeof(request)) + { + return FAILED; + } + + algo = (struct xfrm_algo_aead*)RTA_DATA(rthdr); + algo->alg_key_len = enc_key.len * 8; + algo->alg_icv_len = icv_size; + strcpy(algo->alg_name, alg_name); + memcpy(algo->alg_key, enc_key.ptr, enc_key.len); + + rthdr = XFRM_RTA_NEXT(rthdr); + break; + } + default: + { + struct xfrm_algo *algo; + + alg_name = lookup_algorithm(encryption_algs, enc_alg); + if (alg_name == NULL) + { + DBG1(DBG_KNL, "algorithm %N not supported by kernel!", + encryption_algorithm_names, enc_alg); + return FAILED; + } + DBG2(DBG_KNL, " using encryption algorithm %N with key size %d", + encryption_algorithm_names, enc_alg, enc_key.len * 8); + + rthdr->rta_type = XFRMA_ALG_CRYPT; + rthdr->rta_len = RTA_LENGTH(sizeof(struct xfrm_algo) + enc_key.len); + hdr->nlmsg_len += rthdr->rta_len; + if (hdr->nlmsg_len > sizeof(request)) + { + return FAILED; + } + + algo = (struct xfrm_algo*)RTA_DATA(rthdr); + algo->alg_key_len = enc_key.len * 8; + strcpy(algo->alg_name, alg_name); + memcpy(algo->alg_key, enc_key.ptr, enc_key.len); + + rthdr = XFRM_RTA_NEXT(rthdr); + } + } + + if (int_alg != AUTH_UNDEFINED) + { + alg_name = lookup_algorithm(integrity_algs, int_alg); + if (alg_name == NULL) + { + DBG1(DBG_KNL, "algorithm %N not supported by kernel!", + integrity_algorithm_names, int_alg); + return FAILED; + } + DBG2(DBG_KNL, " using integrity algorithm %N with key size %d", + integrity_algorithm_names, int_alg, int_key.len * 8); + + if (int_alg == AUTH_HMAC_SHA2_256_128) + { + struct xfrm_algo_auth* algo; + + /* the kernel uses SHA256 with 96 bit truncation by default, + * use specified truncation size supported by newer kernels */ + rthdr->rta_type = XFRMA_ALG_AUTH_TRUNC; + rthdr->rta_len = RTA_LENGTH(sizeof(struct xfrm_algo_auth) + int_key.len); + + hdr->nlmsg_len += rthdr->rta_len; + if (hdr->nlmsg_len > sizeof(request)) + { + return FAILED; + } + + algo = (struct xfrm_algo_auth*)RTA_DATA(rthdr); + algo->alg_key_len = int_key.len * 8; + algo->alg_trunc_len = 128; + strcpy(algo->alg_name, alg_name); + memcpy(algo->alg_key, int_key.ptr, int_key.len); + } + else + { + struct xfrm_algo* algo; + + rthdr->rta_type = XFRMA_ALG_AUTH; + rthdr->rta_len = RTA_LENGTH(sizeof(struct xfrm_algo) + int_key.len); + + hdr->nlmsg_len += rthdr->rta_len; + if (hdr->nlmsg_len > sizeof(request)) + { + return FAILED; + } + + algo = (struct xfrm_algo*)RTA_DATA(rthdr); + algo->alg_key_len = int_key.len * 8; + strcpy(algo->alg_name, alg_name); + memcpy(algo->alg_key, int_key.ptr, int_key.len); + } + rthdr = XFRM_RTA_NEXT(rthdr); + } + + if (ipcomp != IPCOMP_NONE) + { + rthdr->rta_type = XFRMA_ALG_COMP; + alg_name = lookup_algorithm(compression_algs, ipcomp); + if (alg_name == NULL) + { + DBG1(DBG_KNL, "algorithm %N not supported by kernel!", + ipcomp_transform_names, ipcomp); + return FAILED; + } + DBG2(DBG_KNL, " using compression algorithm %N", + ipcomp_transform_names, ipcomp); + + rthdr->rta_len = RTA_LENGTH(sizeof(struct xfrm_algo)); + hdr->nlmsg_len += rthdr->rta_len; + if (hdr->nlmsg_len > sizeof(request)) + { + return FAILED; + } + + struct xfrm_algo* algo = (struct xfrm_algo*)RTA_DATA(rthdr); + algo->alg_key_len = 0; + strcpy(algo->alg_name, alg_name); + + rthdr = XFRM_RTA_NEXT(rthdr); + } + + if (encap) + { + rthdr->rta_type = XFRMA_ENCAP; + rthdr->rta_len = RTA_LENGTH(sizeof(struct xfrm_encap_tmpl)); + + hdr->nlmsg_len += rthdr->rta_len; + if (hdr->nlmsg_len > sizeof(request)) + { + return FAILED; + } + + struct xfrm_encap_tmpl* tmpl = (struct xfrm_encap_tmpl*)RTA_DATA(rthdr); + tmpl->encap_type = UDP_ENCAP_ESPINUDP; + tmpl->encap_sport = htons(src->get_port(src)); + tmpl->encap_dport = htons(dst->get_port(dst)); + memset(&tmpl->encap_oa, 0, sizeof (xfrm_address_t)); + /* encap_oa could probably be derived from the + * traffic selectors [rfc4306, p39]. In the netlink kernel implementation + * pluto does the same as we do here but it uses encap_oa in the + * pfkey implementation. BUT as /usr/src/linux/net/key/af_key.c indicates + * the kernel ignores it anyway + * -> does that mean that NAT-T encap doesn't work in transport mode? + * No. The reason the kernel ignores NAT-OA is that it recomputes + * (or, rather, just ignores) the checksum. If packets pass + * the IPsec checks it marks them "checksum ok" so OA isn't needed. */ + rthdr = XFRM_RTA_NEXT(rthdr); + } + + if (this->socket_xfrm->send_ack(this->socket_xfrm, hdr) != SUCCESS) + { + DBG1(DBG_KNL, "unable to add SAD entry with SPI %.8x", ntohl(spi)); + return FAILED; + } + return SUCCESS; +} + +/** + * Get the replay state (i.e. sequence numbers) of an SA. + */ +static status_t get_replay_state(private_kernel_netlink_ipsec_t *this, + u_int32_t spi, protocol_id_t protocol, host_t *dst, + struct xfrm_replay_state *replay) +{ + netlink_buf_t request; + struct nlmsghdr *hdr, *out = NULL; + struct xfrm_aevent_id *out_aevent = NULL, *aevent_id; + size_t len; + struct rtattr *rta; + size_t rtasize; + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "querying replay state from SAD entry with SPI %.8x", ntohl(spi)); + + hdr = (struct nlmsghdr*)request; + hdr->nlmsg_flags = NLM_F_REQUEST; + hdr->nlmsg_type = XFRM_MSG_GETAE; + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct xfrm_aevent_id)); + + aevent_id = (struct xfrm_aevent_id*)NLMSG_DATA(hdr); + aevent_id->flags = XFRM_AE_RVAL; + + host2xfrm(dst, &aevent_id->sa_id.daddr); + aevent_id->sa_id.spi = spi; + aevent_id->sa_id.proto = proto_ike2kernel(protocol); + aevent_id->sa_id.family = dst->get_family(dst); + + if (this->socket_xfrm->send(this->socket_xfrm, hdr, &out, &len) == SUCCESS) + { + hdr = out; + while (NLMSG_OK(hdr, len)) + { + switch (hdr->nlmsg_type) + { + case XFRM_MSG_NEWAE: + { + out_aevent = NLMSG_DATA(hdr); + break; + } + case NLMSG_ERROR: + { + struct nlmsgerr *err = NLMSG_DATA(hdr); + DBG1(DBG_KNL, "querying replay state from SAD entry failed: %s (%d)", + strerror(-err->error), -err->error); + break; + } + default: + hdr = NLMSG_NEXT(hdr, len); + continue; + case NLMSG_DONE: + break; + } + break; + } + } + + if (out_aevent == NULL) + { + DBG1(DBG_KNL, "unable to query replay state from SAD entry with SPI %.8x", + ntohl(spi)); + free(out); + return FAILED; + } + + rta = XFRM_RTA(out, struct xfrm_aevent_id); + rtasize = XFRM_PAYLOAD(out, struct xfrm_aevent_id); + while(RTA_OK(rta, rtasize)) + { + if (rta->rta_type == XFRMA_REPLAY_VAL && + RTA_PAYLOAD(rta) == sizeof(struct xfrm_replay_state)) + { + memcpy(replay, RTA_DATA(rta), RTA_PAYLOAD(rta)); + free(out); + return SUCCESS; + } + rta = RTA_NEXT(rta, rtasize); + } + + DBG1(DBG_KNL, "unable to query replay state from SAD entry with SPI %.8x", + ntohl(spi)); + free(out); + return FAILED; +} + +METHOD(kernel_ipsec_t, query_sa, status_t, + private_kernel_netlink_ipsec_t *this, host_t *src, host_t *dst, + u_int32_t spi, protocol_id_t protocol, u_int64_t *bytes) +{ + netlink_buf_t request; + struct nlmsghdr *out = NULL, *hdr; + struct xfrm_usersa_id *sa_id; + struct xfrm_usersa_info *sa = NULL; + size_t len; + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "querying SAD entry with SPI %.8x", ntohl(spi)); + + hdr = (struct nlmsghdr*)request; + hdr->nlmsg_flags = NLM_F_REQUEST; + hdr->nlmsg_type = XFRM_MSG_GETSA; + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct xfrm_usersa_id)); + + sa_id = (struct xfrm_usersa_id*)NLMSG_DATA(hdr); + host2xfrm(dst, &sa_id->daddr); + sa_id->spi = spi; + sa_id->proto = proto_ike2kernel(protocol); + sa_id->family = dst->get_family(dst); + + if (this->socket_xfrm->send(this->socket_xfrm, hdr, &out, &len) == SUCCESS) + { + hdr = out; + while (NLMSG_OK(hdr, len)) + { + switch (hdr->nlmsg_type) + { + case XFRM_MSG_NEWSA: + { + sa = (struct xfrm_usersa_info*)NLMSG_DATA(hdr); + break; + } + case NLMSG_ERROR: + { + struct nlmsgerr *err = NLMSG_DATA(hdr); + DBG1(DBG_KNL, "querying SAD entry with SPI %.8x failed: %s (%d)", + ntohl(spi), strerror(-err->error), -err->error); + break; + } + default: + hdr = NLMSG_NEXT(hdr, len); + continue; + case NLMSG_DONE: + break; + } + break; + } + } + + if (sa == NULL) + { + DBG2(DBG_KNL, "unable to query SAD entry with SPI %.8x", ntohl(spi)); + free(out); + return FAILED; + } + *bytes = sa->curlft.bytes; + + free(out); + return SUCCESS; +} + +METHOD(kernel_ipsec_t, del_sa, status_t, + private_kernel_netlink_ipsec_t *this, host_t *src, host_t *dst, + u_int32_t spi, protocol_id_t protocol, u_int16_t cpi) +{ + netlink_buf_t request; + struct nlmsghdr *hdr; + struct xfrm_usersa_id *sa_id; + + /* if IPComp was used, we first delete the additional IPComp SA */ + if (cpi) + { + del_sa(this, src, dst, htonl(ntohs(cpi)), IPPROTO_COMP, 0); + } + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "deleting SAD entry with SPI %.8x", ntohl(spi)); + + hdr = (struct nlmsghdr*)request; + hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; + hdr->nlmsg_type = XFRM_MSG_DELSA; + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct xfrm_usersa_id)); + + sa_id = (struct xfrm_usersa_id*)NLMSG_DATA(hdr); + host2xfrm(dst, &sa_id->daddr); + sa_id->spi = spi; + sa_id->proto = proto_ike2kernel(protocol); + sa_id->family = dst->get_family(dst); + + if (this->socket_xfrm->send_ack(this->socket_xfrm, hdr) != SUCCESS) + { + DBG1(DBG_KNL, "unable to delete SAD entry with SPI %.8x", ntohl(spi)); + return FAILED; + } + DBG2(DBG_KNL, "deleted SAD entry with SPI %.8x", ntohl(spi)); + return SUCCESS; +} + +METHOD(kernel_ipsec_t, update_sa, status_t, + private_kernel_netlink_ipsec_t *this, u_int32_t spi, protocol_id_t protocol, + u_int16_t cpi, host_t *src, host_t *dst, host_t *new_src, host_t *new_dst, + bool old_encap, bool new_encap) +{ + netlink_buf_t request; + u_char *pos; + struct nlmsghdr *hdr, *out = NULL; + struct xfrm_usersa_id *sa_id; + struct xfrm_usersa_info *out_sa = NULL, *sa; + size_t len; + struct rtattr *rta; + size_t rtasize; + struct xfrm_encap_tmpl* tmpl = NULL; + bool got_replay_state = FALSE; + struct xfrm_replay_state replay; + + /* if IPComp is used, we first update the IPComp SA */ + if (cpi) + { + update_sa(this, htonl(ntohs(cpi)), IPPROTO_COMP, 0, + src, dst, new_src, new_dst, FALSE, FALSE); + } + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "querying SAD entry with SPI %.8x for update", ntohl(spi)); + + /* query the existing SA first */ + hdr = (struct nlmsghdr*)request; + hdr->nlmsg_flags = NLM_F_REQUEST; + hdr->nlmsg_type = XFRM_MSG_GETSA; + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct xfrm_usersa_id)); + + sa_id = (struct xfrm_usersa_id*)NLMSG_DATA(hdr); + host2xfrm(dst, &sa_id->daddr); + sa_id->spi = spi; + sa_id->proto = proto_ike2kernel(protocol); + sa_id->family = dst->get_family(dst); + + if (this->socket_xfrm->send(this->socket_xfrm, hdr, &out, &len) == SUCCESS) + { + hdr = out; + while (NLMSG_OK(hdr, len)) + { + switch (hdr->nlmsg_type) + { + case XFRM_MSG_NEWSA: + { + out_sa = NLMSG_DATA(hdr); + break; + } + case NLMSG_ERROR: + { + struct nlmsgerr *err = NLMSG_DATA(hdr); + DBG1(DBG_KNL, "querying SAD entry failed: %s (%d)", + strerror(-err->error), -err->error); + break; + } + default: + hdr = NLMSG_NEXT(hdr, len); + continue; + case NLMSG_DONE: + break; + } + break; + } + } + if (out_sa == NULL) + { + DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x", ntohl(spi)); + free(out); + return FAILED; + } + + /* try to get the replay state */ + if (get_replay_state(this, spi, protocol, dst, &replay) == SUCCESS) + { + got_replay_state = TRUE; + } + + /* delete the old SA (without affecting the IPComp SA) */ + if (del_sa(this, src, dst, spi, protocol, 0) != SUCCESS) + { + DBG1(DBG_KNL, "unable to delete old SAD entry with SPI %.8x", ntohl(spi)); + free(out); + return FAILED; + } + + DBG2(DBG_KNL, "updating SAD entry with SPI %.8x from %#H..%#H to %#H..%#H", + ntohl(spi), src, dst, new_src, new_dst); + /* copy over the SA from out to request */ + hdr = (struct nlmsghdr*)request; + memcpy(hdr, out, min(out->nlmsg_len, sizeof(request))); + hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; + hdr->nlmsg_type = XFRM_MSG_NEWSA; + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct xfrm_usersa_info)); + sa = NLMSG_DATA(hdr); + sa->family = new_dst->get_family(new_dst); + + if (!src->ip_equals(src, new_src)) + { + host2xfrm(new_src, &sa->saddr); + } + if (!dst->ip_equals(dst, new_dst)) + { + host2xfrm(new_dst, &sa->id.daddr); + } + + rta = XFRM_RTA(out, struct xfrm_usersa_info); + rtasize = XFRM_PAYLOAD(out, struct xfrm_usersa_info); + pos = (u_char*)XFRM_RTA(hdr, struct xfrm_usersa_info); + while(RTA_OK(rta, rtasize)) + { + /* copy all attributes, but not XFRMA_ENCAP if we are disabling it */ + if (rta->rta_type != XFRMA_ENCAP || new_encap) + { + if (rta->rta_type == XFRMA_ENCAP) + { /* update encap tmpl */ + tmpl = (struct xfrm_encap_tmpl*)RTA_DATA(rta); + tmpl->encap_sport = ntohs(new_src->get_port(new_src)); + tmpl->encap_dport = ntohs(new_dst->get_port(new_dst)); + } + memcpy(pos, rta, rta->rta_len); + pos += RTA_ALIGN(rta->rta_len); + hdr->nlmsg_len += RTA_ALIGN(rta->rta_len); + } + rta = RTA_NEXT(rta, rtasize); + } + + rta = (struct rtattr*)pos; + if (tmpl == NULL && new_encap) + { /* add tmpl if we are enabling it */ + rta->rta_type = XFRMA_ENCAP; + rta->rta_len = RTA_LENGTH(sizeof(struct xfrm_encap_tmpl)); + + hdr->nlmsg_len += rta->rta_len; + if (hdr->nlmsg_len > sizeof(request)) + { + return FAILED; + } + + tmpl = (struct xfrm_encap_tmpl*)RTA_DATA(rta); + tmpl->encap_type = UDP_ENCAP_ESPINUDP; + tmpl->encap_sport = ntohs(new_src->get_port(new_src)); + tmpl->encap_dport = ntohs(new_dst->get_port(new_dst)); + memset(&tmpl->encap_oa, 0, sizeof (xfrm_address_t)); + + rta = XFRM_RTA_NEXT(rta); + } + + if (got_replay_state) + { /* copy the replay data if available */ + rta->rta_type = XFRMA_REPLAY_VAL; + rta->rta_len = RTA_LENGTH(sizeof(struct xfrm_replay_state)); + + hdr->nlmsg_len += rta->rta_len; + if (hdr->nlmsg_len > sizeof(request)) + { + return FAILED; + } + memcpy(RTA_DATA(rta), &replay, sizeof(replay)); + + rta = XFRM_RTA_NEXT(rta); + } + + if (this->socket_xfrm->send_ack(this->socket_xfrm, hdr) != SUCCESS) + { + DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x", ntohl(spi)); + free(out); + return FAILED; + } + free(out); + + return SUCCESS; +} + +METHOD(kernel_ipsec_t, add_policy, status_t, + private_kernel_netlink_ipsec_t *this, host_t *src, host_t *dst, + traffic_selector_t *src_ts, traffic_selector_t *dst_ts, + policy_dir_t direction, u_int32_t spi, protocol_id_t protocol, + u_int32_t reqid, ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi, + bool routed) +{ + policy_entry_t *current, *policy; + bool found = FALSE; + netlink_buf_t request; + struct xfrm_userpolicy_info *policy_info; + struct nlmsghdr *hdr; + + /* create a policy */ + policy = malloc_thing(policy_entry_t); + memset(policy, 0, sizeof(policy_entry_t)); + policy->sel = ts2selector(src_ts, dst_ts); + policy->direction = direction; + + /* find the policy, which matches EXACTLY */ + this->mutex->lock(this->mutex); + current = this->policies->get(this->policies, policy); + if (current) + { + /* use existing policy */ + current->refcount++; + DBG2(DBG_KNL, "policy %R === %R %N already exists, increasing " + "refcount", src_ts, dst_ts, + policy_dir_names, direction); + free(policy); + policy = current; + found = TRUE; + } + else + { /* apply the new one, if we have no such policy */ + this->policies->put(this->policies, policy, policy); + policy->refcount = 1; + } + + DBG2(DBG_KNL, "adding policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + + memset(&request, 0, sizeof(request)); + hdr = (struct nlmsghdr*)request; + hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; + hdr->nlmsg_type = found ? XFRM_MSG_UPDPOLICY : XFRM_MSG_NEWPOLICY; + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct xfrm_userpolicy_info)); + + policy_info = (struct xfrm_userpolicy_info*)NLMSG_DATA(hdr); + policy_info->sel = policy->sel; + policy_info->dir = policy->direction; + /* calculate priority based on source selector size, small size = high prio */ + policy_info->priority = routed ? PRIO_LOW : PRIO_HIGH; + policy_info->priority -= policy->sel.prefixlen_s * 10; + policy_info->priority -= policy->sel.proto ? 2 : 0; + policy_info->priority -= policy->sel.sport_mask ? 1 : 0; + policy_info->action = XFRM_POLICY_ALLOW; + policy_info->share = XFRM_SHARE_ANY; + this->mutex->unlock(this->mutex); + + /* policies don't expire */ + policy_info->lft.soft_byte_limit = XFRM_INF; + policy_info->lft.soft_packet_limit = XFRM_INF; + policy_info->lft.hard_byte_limit = XFRM_INF; + policy_info->lft.hard_packet_limit = XFRM_INF; + policy_info->lft.soft_add_expires_seconds = 0; + policy_info->lft.hard_add_expires_seconds = 0; + policy_info->lft.soft_use_expires_seconds = 0; + policy_info->lft.hard_use_expires_seconds = 0; + + struct rtattr *rthdr = XFRM_RTA(hdr, struct xfrm_userpolicy_info); + rthdr->rta_type = XFRMA_TMPL; + rthdr->rta_len = RTA_LENGTH(sizeof(struct xfrm_user_tmpl)); + + hdr->nlmsg_len += rthdr->rta_len; + if (hdr->nlmsg_len > sizeof(request)) + { + return FAILED; + } + + struct xfrm_user_tmpl *tmpl = (struct xfrm_user_tmpl*)RTA_DATA(rthdr); + + if (ipcomp != IPCOMP_NONE) + { + tmpl->reqid = reqid; + tmpl->id.proto = IPPROTO_COMP; + tmpl->aalgos = tmpl->ealgos = tmpl->calgos = ~0; + tmpl->mode = mode2kernel(mode); + tmpl->optional = direction != POLICY_OUT; + tmpl->family = src->get_family(src); + + host2xfrm(src, &tmpl->saddr); + host2xfrm(dst, &tmpl->id.daddr); + + /* add an additional xfrm_user_tmpl */ + rthdr->rta_len += RTA_LENGTH(sizeof(struct xfrm_user_tmpl)); + hdr->nlmsg_len += RTA_LENGTH(sizeof(struct xfrm_user_tmpl)); + if (hdr->nlmsg_len > sizeof(request)) + { + return FAILED; + } + + tmpl++; + + /* use transport mode for ESP if we have a tunnel mode IPcomp SA */ + mode = MODE_TRANSPORT; + } + else + { + /* when using IPcomp, only the IPcomp SA uses tmp src/dst addresses */ + host2xfrm(src, &tmpl->saddr); + host2xfrm(dst, &tmpl->id.daddr); + } + + tmpl->reqid = reqid; + tmpl->id.proto = proto_ike2kernel(protocol); + tmpl->aalgos = tmpl->ealgos = tmpl->calgos = ~0; + tmpl->mode = mode2kernel(mode); + tmpl->family = src->get_family(src); + + if (this->socket_xfrm->send_ack(this->socket_xfrm, hdr) != SUCCESS) + { + DBG1(DBG_KNL, "unable to add policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + return FAILED; + } + + /* install a route, if: + * - we are NOT updating a policy + * - this is a forward policy (to just get one for each child) + * - we are in tunnel/BEET mode + * - routing is not disabled via strongswan.conf + */ + if (policy->route == NULL && direction == POLICY_FWD && + mode != MODE_TRANSPORT && this->install_routes) + { + route_entry_t *route = malloc_thing(route_entry_t); + + if (charon->kernel_interface->get_address_by_ts(charon->kernel_interface, + dst_ts, &route->src_ip) == SUCCESS) + { + /* get the nexthop to src (src as we are in POLICY_FWD).*/ + route->gateway = charon->kernel_interface->get_nexthop( + charon->kernel_interface, src); + /* install route via outgoing interface */ + route->if_name = charon->kernel_interface->get_interface( + charon->kernel_interface, dst); + route->dst_net = chunk_alloc(policy->sel.family == AF_INET ? 4 : 16); + memcpy(route->dst_net.ptr, &policy->sel.saddr, route->dst_net.len); + route->prefixlen = policy->sel.prefixlen_s; + + if (route->if_name) + { + switch (charon->kernel_interface->add_route( + charon->kernel_interface, route->dst_net, + route->prefixlen, route->gateway, + route->src_ip, route->if_name)) + { + default: + DBG1(DBG_KNL, "unable to install source route for %H", + route->src_ip); + /* FALL */ + case ALREADY_DONE: + /* route exists, do not uninstall */ + route_entry_destroy(route); + break; + case SUCCESS: + /* cache the installed route */ + policy->route = route; + break; + } + } + else + { + route_entry_destroy(route); + } + } + else + { + free(route); + } + } + return SUCCESS; +} + +METHOD(kernel_ipsec_t, query_policy, status_t, + private_kernel_netlink_ipsec_t *this, traffic_selector_t *src_ts, + traffic_selector_t *dst_ts, policy_dir_t direction, u_int32_t *use_time) +{ + netlink_buf_t request; + struct nlmsghdr *out = NULL, *hdr; + struct xfrm_userpolicy_id *policy_id; + struct xfrm_userpolicy_info *policy = NULL; + size_t len; + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "querying policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + + hdr = (struct nlmsghdr*)request; + hdr->nlmsg_flags = NLM_F_REQUEST; + hdr->nlmsg_type = XFRM_MSG_GETPOLICY; + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct xfrm_userpolicy_id)); + + policy_id = (struct xfrm_userpolicy_id*)NLMSG_DATA(hdr); + policy_id->sel = ts2selector(src_ts, dst_ts); + policy_id->dir = direction; + + if (this->socket_xfrm->send(this->socket_xfrm, hdr, &out, &len) == SUCCESS) + { + hdr = out; + while (NLMSG_OK(hdr, len)) + { + switch (hdr->nlmsg_type) + { + case XFRM_MSG_NEWPOLICY: + { + policy = (struct xfrm_userpolicy_info*)NLMSG_DATA(hdr); + break; + } + case NLMSG_ERROR: + { + struct nlmsgerr *err = NLMSG_DATA(hdr); + DBG1(DBG_KNL, "querying policy failed: %s (%d)", + strerror(-err->error), -err->error); + break; + } + default: + hdr = NLMSG_NEXT(hdr, len); + continue; + case NLMSG_DONE: + break; + } + break; + } + } + + if (policy == NULL) + { + DBG2(DBG_KNL, "unable to query policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + free(out); + return FAILED; + } + + if (policy->curlft.use_time) + { + /* we need the monotonic time, but the kernel returns system time. */ + *use_time = time_monotonic(NULL) - (time(NULL) - policy->curlft.use_time); + } + else + { + *use_time = 0; + } + + free(out); + return SUCCESS; +} + +METHOD(kernel_ipsec_t, del_policy, status_t, + private_kernel_netlink_ipsec_t *this, traffic_selector_t *src_ts, + traffic_selector_t *dst_ts, policy_dir_t direction, bool unrouted) +{ + policy_entry_t *current, policy, *to_delete = NULL; + route_entry_t *route; + netlink_buf_t request; + struct nlmsghdr *hdr; + struct xfrm_userpolicy_id *policy_id; + + DBG2(DBG_KNL, "deleting policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + + /* create a policy */ + memset(&policy, 0, sizeof(policy_entry_t)); + policy.sel = ts2selector(src_ts, dst_ts); + policy.direction = direction; + + /* find the policy */ + this->mutex->lock(this->mutex); + current = this->policies->get(this->policies, &policy); + if (current) + { + to_delete = current; + if (--to_delete->refcount > 0) + { + /* is used by more SAs, keep in kernel */ + DBG2(DBG_KNL, "policy still used by another CHILD_SA, not removed"); + this->mutex->unlock(this->mutex); + return SUCCESS; + } + /* remove if last reference */ + this->policies->remove(this->policies, to_delete); + } + this->mutex->unlock(this->mutex); + if (!to_delete) + { + DBG1(DBG_KNL, "deleting policy %R === %R %N failed, not found", src_ts, + dst_ts, policy_dir_names, direction); + return NOT_FOUND; + } + + memset(&request, 0, sizeof(request)); + + hdr = (struct nlmsghdr*)request; + hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; + hdr->nlmsg_type = XFRM_MSG_DELPOLICY; + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct xfrm_userpolicy_id)); + + policy_id = (struct xfrm_userpolicy_id*)NLMSG_DATA(hdr); + policy_id->sel = to_delete->sel; + policy_id->dir = direction; + + route = to_delete->route; + free(to_delete); + + if (this->socket_xfrm->send_ack(this->socket_xfrm, hdr) != SUCCESS) + { + DBG1(DBG_KNL, "unable to delete policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + return FAILED; + } + + if (route) + { + if (charon->kernel_interface->del_route(charon->kernel_interface, + route->dst_net, route->prefixlen, route->gateway, + route->src_ip, route->if_name) != SUCCESS) + { + DBG1(DBG_KNL, "error uninstalling route installed with " + "policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + } + route_entry_destroy(route); + } + return SUCCESS; +} + +METHOD(kernel_ipsec_t, bypass_socket, bool, + private_kernel_netlink_ipsec_t *this, int fd, int family) +{ + struct xfrm_userpolicy_info policy; + u_int sol, ipsec_policy; + + switch (family) + { + case AF_INET: + sol = SOL_IP; + ipsec_policy = IP_XFRM_POLICY; + break; + case AF_INET6: + sol = SOL_IPV6; + ipsec_policy = IPV6_XFRM_POLICY; + break; + default: + return FALSE; + } + + memset(&policy, 0, sizeof(policy)); + policy.action = XFRM_POLICY_ALLOW; + policy.sel.family = family; + + policy.dir = XFRM_POLICY_OUT; + if (setsockopt(fd, sol, ipsec_policy, &policy, sizeof(policy)) < 0) + { + DBG1(DBG_KNL, "unable to set IPSEC_POLICY on socket: %s", + strerror(errno)); + return FALSE; + } + policy.dir = XFRM_POLICY_IN; + if (setsockopt(fd, sol, ipsec_policy, &policy, sizeof(policy)) < 0) + { + DBG1(DBG_KNL, "unable to set IPSEC_POLICY on socket: %s", + strerror(errno)); + return FALSE; + } + return TRUE; +} + +METHOD(kernel_ipsec_t, destroy, void, + private_kernel_netlink_ipsec_t *this) +{ + enumerator_t *enumerator; + policy_entry_t *policy; + + if (this->job) + { + this->job->cancel(this->job); + } + if (this->socket_xfrm_events > 0) + { + close(this->socket_xfrm_events); + } + DESTROY_IF(this->socket_xfrm); + enumerator = this->policies->create_enumerator(this->policies); + while (enumerator->enumerate(enumerator, &policy, &policy)) + { + free(policy); + } + enumerator->destroy(enumerator); + this->policies->destroy(this->policies); + this->mutex->destroy(this->mutex); + free(this); +} + +/* + * Described in header. + */ +kernel_netlink_ipsec_t *kernel_netlink_ipsec_create() +{ + private_kernel_netlink_ipsec_t *this; + struct sockaddr_nl addr; + int fd; + + INIT(this, + .public.interface = { + .get_spi = _get_spi, + .get_cpi = _get_cpi, + .add_sa = _add_sa, + .update_sa = _update_sa, + .query_sa = _query_sa, + .del_sa = _del_sa, + .add_policy = _add_policy, + .query_policy = _query_policy, + .del_policy = _del_policy, + .bypass_socket = _bypass_socket, + .destroy = _destroy, + }, + .policies = hashtable_create((hashtable_hash_t)policy_hash, + (hashtable_equals_t)policy_equals, 32), + .mutex = mutex_create(MUTEX_TYPE_DEFAULT), + .install_routes = lib->settings->get_bool(lib->settings, + "charon.install_routes", TRUE), + ); + + /* disable lifetimes for allocated SPIs in kernel */ + fd = open("/proc/sys/net/core/xfrm_acq_expires", O_WRONLY); + if (fd) + { + ignore_result(write(fd, "165", 3)); + close(fd); + } + + this->socket_xfrm = netlink_socket_create(NETLINK_XFRM); + if (!this->socket_xfrm) + { + destroy(this); + return NULL; + } + + memset(&addr, 0, sizeof(addr)); + addr.nl_family = AF_NETLINK; + + /* create and bind XFRM socket for ACQUIRE, EXPIRE, MIGRATE & MAPPING */ + this->socket_xfrm_events = socket(AF_NETLINK, SOCK_RAW, NETLINK_XFRM); + if (this->socket_xfrm_events <= 0) + { + DBG1(DBG_KNL, "unable to create XFRM event socket"); + destroy(this); + return NULL; + } + addr.nl_groups = XFRMNLGRP(ACQUIRE) | XFRMNLGRP(EXPIRE) | + XFRMNLGRP(MIGRATE) | XFRMNLGRP(MAPPING); + if (bind(this->socket_xfrm_events, (struct sockaddr*)&addr, sizeof(addr))) + { + DBG1(DBG_KNL, "unable to bind XFRM event socket"); + destroy(this); + return NULL; + } + this->job = callback_job_create((callback_job_cb_t)receive_events, + this, NULL, NULL); + charon->processor->queue_job(charon->processor, (job_t*)this->job); + + return &this->public; +} + diff --git a/src/libcharon/plugins/kernel_netlink/kernel_netlink_ipsec.h b/src/libcharon/plugins/kernel_netlink/kernel_netlink_ipsec.h new file mode 100644 index 000000000..3a45cce06 --- /dev/null +++ b/src/libcharon/plugins/kernel_netlink/kernel_netlink_ipsec.h @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup kernel_netlink_ipsec_i kernel_netlink_ipsec + * @{ @ingroup kernel_netlink + */ + +#ifndef KERNEL_NETLINK_IPSEC_H_ +#define KERNEL_NETLINK_IPSEC_H_ + +#include <kernel/kernel_ipsec.h> + +typedef struct kernel_netlink_ipsec_t kernel_netlink_ipsec_t; + +/** + * Implementation of the kernel ipsec interface using Netlink. + */ +struct kernel_netlink_ipsec_t { + + /** + * Implements kernel_ipsec_t interface + */ + kernel_ipsec_t interface; +}; + +/** + * Create a netlink kernel ipsec interface instance. + * + * @return kernel_netlink_ipsec_t instance + */ +kernel_netlink_ipsec_t *kernel_netlink_ipsec_create(); + +#endif /** KERNEL_NETLINK_IPSEC_H_ @}*/ diff --git a/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c b/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c new file mode 100644 index 000000000..6750458cf --- /dev/null +++ b/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c @@ -0,0 +1,1506 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Copyright (C) 2005-2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/* + * Copyright (C) 2010 secunet Security Networks AG + * Copyright (C) 2010 Thomas Egerer + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include <sys/socket.h> +#include <linux/netlink.h> +#include <linux/rtnetlink.h> +#include <unistd.h> +#include <errno.h> +#include <net/if.h> + +#include "kernel_netlink_net.h" +#include "kernel_netlink_shared.h" + +#include <daemon.h> +#include <threading/thread.h> +#include <threading/condvar.h> +#include <threading/mutex.h> +#include <utils/linked_list.h> +#include <processing/jobs/callback_job.h> +#include <processing/jobs/roam_job.h> + +/** delay before firing roam jobs (ms) */ +#define ROAM_DELAY 100 + +typedef struct addr_entry_t addr_entry_t; + +/** + * IP address in an inface_entry_t + */ +struct addr_entry_t { + + /** The ip address */ + host_t *ip; + + /** virtual IP managed by us */ + bool virtual; + + /** scope of the address */ + u_char scope; + + /** Number of times this IP is used, if virtual */ + u_int refcount; +}; + +/** + * destroy a addr_entry_t object + */ +static void addr_entry_destroy(addr_entry_t *this) +{ + this->ip->destroy(this->ip); + free(this); +} + +typedef struct iface_entry_t iface_entry_t; + +/** + * A network interface on this system, containing addr_entry_t's + */ +struct iface_entry_t { + + /** interface index */ + int ifindex; + + /** name of the interface */ + char ifname[IFNAMSIZ]; + + /** interface flags, as in netdevice(7) SIOCGIFFLAGS */ + u_int flags; + + /** list of addresses as host_t */ + linked_list_t *addrs; +}; + +/** + * destroy an interface entry + */ +static void iface_entry_destroy(iface_entry_t *this) +{ + this->addrs->destroy_function(this->addrs, (void*)addr_entry_destroy); + free(this); +} + +typedef struct private_kernel_netlink_net_t private_kernel_netlink_net_t; + +/** + * Private variables and functions of kernel_netlink_net class. + */ +struct private_kernel_netlink_net_t { + /** + * Public part of the kernel_netlink_net_t object. + */ + kernel_netlink_net_t public; + + /** + * mutex to lock access to various lists + */ + mutex_t *mutex; + + /** + * condition variable to signal virtual IP add/removal + */ + condvar_t *condvar; + + /** + * Cached list of interfaces and its addresses (iface_entry_t) + */ + linked_list_t *ifaces; + + /** + * job receiving netlink events + */ + callback_job_t *job; + + /** + * netlink rt socket (routing) + */ + netlink_socket_t *socket; + + /** + * Netlink rt socket to receive address change events + */ + int socket_events; + + /** + * time of the last roam_job + */ + timeval_t last_roam; + + /** + * routing table to install routes + */ + int routing_table; + + /** + * priority of used routing table + */ + int routing_table_prio; + + /** + * whether to react to RTM_NEWROUTE or RTM_DELROUTE events + */ + bool process_route; + + /** + * whether to actually install virtual IPs + */ + bool install_virtual_ip; + + /** + * list with routing tables to be excluded from route lookup + */ + linked_list_t *rt_exclude; +}; + +/** + * get the refcount of a virtual ip + */ +static int get_vip_refcount(private_kernel_netlink_net_t *this, host_t* ip) +{ + iterator_t *ifaces, *addrs; + iface_entry_t *iface; + addr_entry_t *addr; + int refcount = 0; + + ifaces = this->ifaces->create_iterator(this->ifaces, TRUE); + while (ifaces->iterate(ifaces, (void**)&iface)) + { + addrs = iface->addrs->create_iterator(iface->addrs, TRUE); + while (addrs->iterate(addrs, (void**)&addr)) + { + if (addr->virtual && (iface->flags & IFF_UP) && + ip->ip_equals(ip, addr->ip)) + { + refcount = addr->refcount; + break; + } + } + addrs->destroy(addrs); + if (refcount) + { + break; + } + } + ifaces->destroy(ifaces); + + return refcount; +} + +/** + * start a roaming job. We delay it for a second and fire only one job + * for multiple events. Otherwise we would create two many jobs. + */ +static void fire_roam_job(private_kernel_netlink_net_t *this, bool address) +{ + timeval_t now; + + time_monotonic(&now); + if (timercmp(&now, &this->last_roam, >)) + { + now.tv_usec += ROAM_DELAY * 1000; + while (now.tv_usec > 1000000) + { + now.tv_sec++; + now.tv_usec -= 1000000; + } + this->last_roam = now; + charon->scheduler->schedule_job_ms(charon->scheduler, + (job_t*)roam_job_create(address), ROAM_DELAY); + } +} + +/** + * process RTM_NEWLINK/RTM_DELLINK from kernel + */ +static void process_link(private_kernel_netlink_net_t *this, + struct nlmsghdr *hdr, bool event) +{ + struct ifinfomsg* msg = (struct ifinfomsg*)(NLMSG_DATA(hdr)); + struct rtattr *rta = IFLA_RTA(msg); + size_t rtasize = IFLA_PAYLOAD (hdr); + enumerator_t *enumerator; + iface_entry_t *current, *entry = NULL; + char *name = NULL; + bool update = FALSE; + + while(RTA_OK(rta, rtasize)) + { + switch (rta->rta_type) + { + case IFLA_IFNAME: + name = RTA_DATA(rta); + break; + } + rta = RTA_NEXT(rta, rtasize); + } + if (!name) + { + name = "(unknown)"; + } + + this->mutex->lock(this->mutex); + switch (hdr->nlmsg_type) + { + case RTM_NEWLINK: + { + if (msg->ifi_flags & IFF_LOOPBACK) + { /* ignore loopback interfaces */ + break; + } + enumerator = this->ifaces->create_enumerator(this->ifaces); + while (enumerator->enumerate(enumerator, ¤t)) + { + if (current->ifindex == msg->ifi_index) + { + entry = current; + break; + } + } + enumerator->destroy(enumerator); + if (!entry) + { + entry = malloc_thing(iface_entry_t); + entry->ifindex = msg->ifi_index; + entry->flags = 0; + entry->addrs = linked_list_create(); + this->ifaces->insert_last(this->ifaces, entry); + } + memcpy(entry->ifname, name, IFNAMSIZ); + entry->ifname[IFNAMSIZ-1] = '\0'; + if (event) + { + if (!(entry->flags & IFF_UP) && (msg->ifi_flags & IFF_UP)) + { + update = TRUE; + DBG1(DBG_KNL, "interface %s activated", name); + } + if ((entry->flags & IFF_UP) && !(msg->ifi_flags & IFF_UP)) + { + update = TRUE; + DBG1(DBG_KNL, "interface %s deactivated", name); + } + } + entry->flags = msg->ifi_flags; + break; + } + case RTM_DELLINK: + { + enumerator = this->ifaces->create_enumerator(this->ifaces); + while (enumerator->enumerate(enumerator, ¤t)) + { + if (current->ifindex == msg->ifi_index) + { + /* we do not remove it, as an address may be added to a + * "down" interface and we wan't to know that. */ + current->flags = msg->ifi_flags; + break; + } + } + enumerator->destroy(enumerator); + break; + } + } + this->mutex->unlock(this->mutex); + + /* send an update to all IKE_SAs */ + if (update && event) + { + fire_roam_job(this, TRUE); + } +} + +/** + * process RTM_NEWADDR/RTM_DELADDR from kernel + */ +static void process_addr(private_kernel_netlink_net_t *this, + struct nlmsghdr *hdr, bool event) +{ + struct ifaddrmsg* msg = (struct ifaddrmsg*)(NLMSG_DATA(hdr)); + struct rtattr *rta = IFA_RTA(msg); + size_t rtasize = IFA_PAYLOAD (hdr); + host_t *host = NULL; + enumerator_t *ifaces, *addrs; + iface_entry_t *iface; + addr_entry_t *addr; + chunk_t local = chunk_empty, address = chunk_empty; + bool update = FALSE, found = FALSE, changed = FALSE; + + while(RTA_OK(rta, rtasize)) + { + switch (rta->rta_type) + { + case IFA_LOCAL: + local.ptr = RTA_DATA(rta); + local.len = RTA_PAYLOAD(rta); + break; + case IFA_ADDRESS: + address.ptr = RTA_DATA(rta); + address.len = RTA_PAYLOAD(rta); + break; + } + rta = RTA_NEXT(rta, rtasize); + } + + /* For PPP interfaces, we need the IFA_LOCAL address, + * IFA_ADDRESS is the peers address. But IFA_LOCAL is + * not included in all cases (IPv6?), so fallback to IFA_ADDRESS. */ + if (local.ptr) + { + host = host_create_from_chunk(msg->ifa_family, local, 0); + } + else if (address.ptr) + { + host = host_create_from_chunk(msg->ifa_family, address, 0); + } + + if (host == NULL) + { /* bad family? */ + return; + } + + this->mutex->lock(this->mutex); + ifaces = this->ifaces->create_enumerator(this->ifaces); + while (ifaces->enumerate(ifaces, &iface)) + { + if (iface->ifindex == msg->ifa_index) + { + addrs = iface->addrs->create_enumerator(iface->addrs); + while (addrs->enumerate(addrs, &addr)) + { + if (host->ip_equals(host, addr->ip)) + { + found = TRUE; + if (hdr->nlmsg_type == RTM_DELADDR) + { + iface->addrs->remove_at(iface->addrs, addrs); + if (!addr->virtual) + { + changed = TRUE; + DBG1(DBG_KNL, "%H disappeared from %s", + host, iface->ifname); + } + addr_entry_destroy(addr); + } + else if (hdr->nlmsg_type == RTM_NEWADDR && addr->virtual) + { + addr->refcount = 1; + } + } + } + addrs->destroy(addrs); + + if (hdr->nlmsg_type == RTM_NEWADDR) + { + if (!found) + { + found = TRUE; + changed = TRUE; + addr = malloc_thing(addr_entry_t); + addr->ip = host->clone(host); + addr->virtual = FALSE; + addr->refcount = 1; + addr->scope = msg->ifa_scope; + + iface->addrs->insert_last(iface->addrs, addr); + if (event) + { + DBG1(DBG_KNL, "%H appeared on %s", host, iface->ifname); + } + } + } + if (found && (iface->flags & IFF_UP)) + { + update = TRUE; + } + break; + } + } + ifaces->destroy(ifaces); + this->mutex->unlock(this->mutex); + host->destroy(host); + + /* send an update to all IKE_SAs */ + if (update && event && changed) + { + fire_roam_job(this, TRUE); + } +} + +/** + * process RTM_NEWROUTE and RTM_DELROUTE from kernel + */ +static void process_route(private_kernel_netlink_net_t *this, struct nlmsghdr *hdr) +{ + struct rtmsg* msg = (struct rtmsg*)(NLMSG_DATA(hdr)); + struct rtattr *rta = RTM_RTA(msg); + size_t rtasize = RTM_PAYLOAD(hdr); + host_t *host = NULL; + + /* ignore routes added by us */ + if (msg->rtm_table && msg->rtm_table == this->routing_table) + { + return; + } + + while (RTA_OK(rta, rtasize)) + { + switch (rta->rta_type) + { + case RTA_PREFSRC: + host = host_create_from_chunk(msg->rtm_family, + chunk_create(RTA_DATA(rta), RTA_PAYLOAD(rta)), 0); + break; + } + rta = RTA_NEXT(rta, rtasize); + } + if (host) + { + this->mutex->lock(this->mutex); + if (!get_vip_refcount(this, host)) + { /* ignore routes added for virtual IPs */ + fire_roam_job(this, FALSE); + } + this->mutex->unlock(this->mutex); + host->destroy(host); + } +} + +/** + * Receives events from kernel + */ +static job_requeue_t receive_events(private_kernel_netlink_net_t *this) +{ + char response[1024]; + struct nlmsghdr *hdr = (struct nlmsghdr*)response; + struct sockaddr_nl addr; + socklen_t addr_len = sizeof(addr); + int len; + bool oldstate; + + oldstate = thread_cancelability(TRUE); + len = recvfrom(this->socket_events, response, sizeof(response), 0, + (struct sockaddr*)&addr, &addr_len); + thread_cancelability(oldstate); + + if (len < 0) + { + switch (errno) + { + case EINTR: + /* interrupted, try again */ + return JOB_REQUEUE_DIRECT; + case EAGAIN: + /* no data ready, select again */ + return JOB_REQUEUE_DIRECT; + default: + DBG1(DBG_KNL, "unable to receive from rt event socket"); + sleep(1); + return JOB_REQUEUE_FAIR; + } + } + + if (addr.nl_pid != 0) + { /* not from kernel. not interested, try another one */ + return JOB_REQUEUE_DIRECT; + } + + while (NLMSG_OK(hdr, len)) + { + /* looks good so far, dispatch netlink message */ + switch (hdr->nlmsg_type) + { + case RTM_NEWADDR: + case RTM_DELADDR: + process_addr(this, hdr, TRUE); + this->condvar->broadcast(this->condvar); + break; + case RTM_NEWLINK: + case RTM_DELLINK: + process_link(this, hdr, TRUE); + this->condvar->broadcast(this->condvar); + break; + case RTM_NEWROUTE: + case RTM_DELROUTE: + if (this->process_route) + { + process_route(this, hdr); + } + break; + default: + break; + } + hdr = NLMSG_NEXT(hdr, len); + } + return JOB_REQUEUE_DIRECT; +} + +/** enumerator over addresses */ +typedef struct { + private_kernel_netlink_net_t* this; + /** whether to enumerate down interfaces */ + bool include_down_ifaces; + /** whether to enumerate virtual ip addresses */ + bool include_virtual_ips; +} address_enumerator_t; + +/** + * cleanup function for address enumerator + */ +static void address_enumerator_destroy(address_enumerator_t *data) +{ + data->this->mutex->unlock(data->this->mutex); + free(data); +} + +/** + * filter for addresses + */ +static bool filter_addresses(address_enumerator_t *data, addr_entry_t** in, host_t** out) +{ + if (!data->include_virtual_ips && (*in)->virtual) + { /* skip virtual interfaces added by us */ + return FALSE; + } + if ((*in)->scope >= RT_SCOPE_LINK) + { /* skip addresses with a unusable scope */ + return FALSE; + } + *out = (*in)->ip; + return TRUE; +} + +/** + * enumerator constructor for interfaces + */ +static enumerator_t *create_iface_enumerator(iface_entry_t *iface, address_enumerator_t *data) +{ + return enumerator_create_filter(iface->addrs->create_enumerator(iface->addrs), + (void*)filter_addresses, data, NULL); +} + +/** + * filter for interfaces + */ +static bool filter_interfaces(address_enumerator_t *data, iface_entry_t** in, iface_entry_t** out) +{ + if (!data->include_down_ifaces && !((*in)->flags & IFF_UP)) + { /* skip interfaces not up */ + return FALSE; + } + *out = *in; + return TRUE; +} + +/** + * implementation of kernel_net_t.create_address_enumerator + */ +static enumerator_t *create_address_enumerator(private_kernel_netlink_net_t *this, + bool include_down_ifaces, bool include_virtual_ips) +{ + address_enumerator_t *data = malloc_thing(address_enumerator_t); + data->this = this; + data->include_down_ifaces = include_down_ifaces; + data->include_virtual_ips = include_virtual_ips; + + this->mutex->lock(this->mutex); + return enumerator_create_nested( + enumerator_create_filter(this->ifaces->create_enumerator(this->ifaces), + (void*)filter_interfaces, data, NULL), + (void*)create_iface_enumerator, data, (void*)address_enumerator_destroy); +} + +/** + * implementation of kernel_net_t.get_interface_name + */ +static char *get_interface_name(private_kernel_netlink_net_t *this, host_t* ip) +{ + enumerator_t *ifaces, *addrs; + iface_entry_t *iface; + addr_entry_t *addr; + char *name = NULL; + + DBG2(DBG_KNL, "getting interface name for %H", ip); + + this->mutex->lock(this->mutex); + ifaces = this->ifaces->create_enumerator(this->ifaces); + while (ifaces->enumerate(ifaces, &iface)) + { + addrs = iface->addrs->create_enumerator(iface->addrs); + while (addrs->enumerate(addrs, &addr)) + { + if (ip->ip_equals(ip, addr->ip)) + { + name = strdup(iface->ifname); + break; + } + } + addrs->destroy(addrs); + if (name) + { + break; + } + } + ifaces->destroy(ifaces); + this->mutex->unlock(this->mutex); + + if (name) + { + DBG2(DBG_KNL, "%H is on interface %s", ip, name); + } + else + { + DBG2(DBG_KNL, "%H is not a local address", ip); + } + return name; +} + +/** + * get the index of an interface by name + */ +static int get_interface_index(private_kernel_netlink_net_t *this, char* name) +{ + enumerator_t *ifaces; + iface_entry_t *iface; + int ifindex = 0; + + DBG2(DBG_KNL, "getting iface index for %s", name); + + this->mutex->lock(this->mutex); + ifaces = this->ifaces->create_enumerator(this->ifaces); + while (ifaces->enumerate(ifaces, &iface)) + { + if (streq(name, iface->ifname)) + { + ifindex = iface->ifindex; + break; + } + } + ifaces->destroy(ifaces); + this->mutex->unlock(this->mutex); + + if (ifindex == 0) + { + DBG1(DBG_KNL, "unable to get interface index for %s", name); + } + return ifindex; +} + +/** + * Check if an interface with a given index is up + */ +static bool is_interface_up(private_kernel_netlink_net_t *this, int index) +{ + enumerator_t *ifaces; + iface_entry_t *iface; + /* default to TRUE for interface we do not monitor (e.g. lo) */ + bool up = TRUE; + + ifaces = this->ifaces->create_enumerator(this->ifaces); + while (ifaces->enumerate(ifaces, &iface)) + { + if (iface->ifindex == index) + { + up = iface->flags & IFF_UP; + break; + } + } + ifaces->destroy(ifaces); + return up; +} + +/** + * check if an address (chunk) addr is in subnet (net with net_len net bits) + */ +static bool addr_in_subnet(chunk_t addr, chunk_t net, int net_len) +{ + static const u_char mask[] = { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe }; + int byte = 0; + + if (net_len == 0) + { /* any address matches a /0 network */ + return TRUE; + } + if (addr.len != net.len || net_len > 8 * net.len ) + { + return FALSE; + } + /* scan through all bytes in network order */ + while (net_len > 0) + { + if (net_len < 8) + { + return (mask[net_len] & addr.ptr[byte]) == (mask[net_len] & net.ptr[byte]); + } + else + { + if (addr.ptr[byte] != net.ptr[byte]) + { + return FALSE; + } + byte++; + net_len -= 8; + } + } + return TRUE; +} + +/** + * Get a route: If "nexthop", the nexthop is returned. source addr otherwise. + */ +static host_t *get_route(private_kernel_netlink_net_t *this, host_t *dest, + bool nexthop, host_t *candidate) +{ + netlink_buf_t request; + struct nlmsghdr *hdr, *out, *current; + struct rtmsg *msg; + chunk_t chunk; + size_t len; + int best = -1; + enumerator_t *enumerator; + host_t *src = NULL, *gtw = NULL; + + DBG2(DBG_KNL, "getting address to reach %H", dest); + + memset(&request, 0, sizeof(request)); + + hdr = (struct nlmsghdr*)request; + hdr->nlmsg_flags = NLM_F_REQUEST; + if (dest->get_family(dest) == AF_INET) + { + /* We dump all addresses for IPv4, as we want to ignore IPsec specific + * routes installed by us. But the kernel does not return source + * addresses in a IPv6 dump, so fall back to get() for v6 routes. */ + hdr->nlmsg_flags |= NLM_F_ROOT | NLM_F_DUMP; + } + hdr->nlmsg_type = RTM_GETROUTE; + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)); + + msg = (struct rtmsg*)NLMSG_DATA(hdr); + msg->rtm_family = dest->get_family(dest); + if (candidate) + { + chunk = candidate->get_address(candidate); + netlink_add_attribute(hdr, RTA_PREFSRC, chunk, sizeof(request)); + } + chunk = dest->get_address(dest); + netlink_add_attribute(hdr, RTA_DST, chunk, sizeof(request)); + + if (this->socket->send(this->socket, hdr, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "getting address to %H failed", dest); + return NULL; + } + this->mutex->lock(this->mutex); + + for (current = out; NLMSG_OK(current, len); + current = NLMSG_NEXT(current, len)) + { + switch (current->nlmsg_type) + { + case NLMSG_DONE: + break; + case RTM_NEWROUTE: + { + struct rtattr *rta; + size_t rtasize; + chunk_t rta_gtw, rta_src, rta_dst; + u_int32_t rta_oif = 0; + host_t *new_src, *new_gtw; + bool cont = FALSE; + uintptr_t table; + + rta_gtw = rta_src = rta_dst = chunk_empty; + msg = (struct rtmsg*)(NLMSG_DATA(current)); + rta = RTM_RTA(msg); + rtasize = RTM_PAYLOAD(current); + while (RTA_OK(rta, rtasize)) + { + switch (rta->rta_type) + { + case RTA_PREFSRC: + rta_src = chunk_create(RTA_DATA(rta), RTA_PAYLOAD(rta)); + break; + case RTA_GATEWAY: + rta_gtw = chunk_create(RTA_DATA(rta), RTA_PAYLOAD(rta)); + break; + case RTA_DST: + rta_dst = chunk_create(RTA_DATA(rta), RTA_PAYLOAD(rta)); + break; + case RTA_OIF: + if (RTA_PAYLOAD(rta) == sizeof(rta_oif)) + { + rta_oif = *(u_int32_t*)RTA_DATA(rta); + } + break; + } + rta = RTA_NEXT(rta, rtasize); + } + if (msg->rtm_dst_len <= best) + { /* not better than a previous one */ + continue; + } + enumerator = this->rt_exclude->create_enumerator(this->rt_exclude); + while (enumerator->enumerate(enumerator, &table)) + { + if (table == msg->rtm_table) + { + cont = TRUE; + break; + } + } + enumerator->destroy(enumerator); + if (cont) + { + continue; + } + if (this->routing_table != 0 && + msg->rtm_table == this->routing_table) + { /* route is from our own ipsec routing table */ + continue; + } + if (rta_oif && !is_interface_up(this, rta_oif)) + { /* interface is down */ + continue; + } + if (!addr_in_subnet(chunk, rta_dst, msg->rtm_dst_len)) + { /* route destination does not contain dest */ + continue; + } + + if (nexthop) + { + /* nexthop lookup, return gateway if any */ + DESTROY_IF(gtw); + gtw = host_create_from_chunk(msg->rtm_family, rta_gtw, 0); + best = msg->rtm_dst_len; + continue; + } + if (rta_src.ptr) + { + /* got a source address */ + new_src = host_create_from_chunk(msg->rtm_family, rta_src, 0); + if (new_src) + { + if (get_vip_refcount(this, new_src)) + { /* skip source address if it is installed by us */ + new_src->destroy(new_src); + } + else + { + DESTROY_IF(src); + src = new_src; + best = msg->rtm_dst_len; + } + } + continue; + } + if (rta_gtw.ptr) + { /* no source, but a gateway. Lookup source to reach gtw. */ + new_gtw = host_create_from_chunk(msg->rtm_family, rta_gtw, 0); + new_src = get_route(this, new_gtw, FALSE, candidate); + new_gtw->destroy(new_gtw); + if (new_src) + { + DESTROY_IF(src); + src = new_src; + best = msg->rtm_dst_len; + } + continue; + } + continue; + } + default: + continue; + } + break; + } + free(out); + this->mutex->unlock(this->mutex); + + if (nexthop) + { + if (gtw) + { + return gtw; + } + return dest->clone(dest); + } + return src; +} + +/** + * Implementation of kernel_net_t.get_source_addr. + */ +static host_t* get_source_addr(private_kernel_netlink_net_t *this, + host_t *dest, host_t *src) +{ + return get_route(this, dest, FALSE, src); +} + +/** + * Implementation of kernel_net_t.get_nexthop. + */ +static host_t* get_nexthop(private_kernel_netlink_net_t *this, host_t *dest) +{ + return get_route(this, dest, TRUE, NULL); +} + +/** + * Manages the creation and deletion of ip addresses on an interface. + * By setting the appropriate nlmsg_type, the ip will be set or unset. + */ +static status_t manage_ipaddr(private_kernel_netlink_net_t *this, int nlmsg_type, + int flags, int if_index, host_t *ip) +{ + netlink_buf_t request; + struct nlmsghdr *hdr; + struct ifaddrmsg *msg; + chunk_t chunk; + + memset(&request, 0, sizeof(request)); + + chunk = ip->get_address(ip); + + hdr = (struct nlmsghdr*)request; + hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | flags; + hdr->nlmsg_type = nlmsg_type; + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg)); + + msg = (struct ifaddrmsg*)NLMSG_DATA(hdr); + msg->ifa_family = ip->get_family(ip); + msg->ifa_flags = 0; + msg->ifa_prefixlen = 8 * chunk.len; + msg->ifa_scope = RT_SCOPE_UNIVERSE; + msg->ifa_index = if_index; + + netlink_add_attribute(hdr, IFA_LOCAL, chunk, sizeof(request)); + + return this->socket->send_ack(this->socket, hdr); +} + +/** + * Implementation of kernel_net_t.add_ip. + */ +static status_t add_ip(private_kernel_netlink_net_t *this, + host_t *virtual_ip, host_t *iface_ip) +{ + iface_entry_t *iface; + addr_entry_t *addr; + enumerator_t *addrs, *ifaces; + int ifindex; + + if (!this->install_virtual_ip) + { /* disabled by config */ + return SUCCESS; + } + + DBG2(DBG_KNL, "adding virtual IP %H", virtual_ip); + + this->mutex->lock(this->mutex); + ifaces = this->ifaces->create_enumerator(this->ifaces); + while (ifaces->enumerate(ifaces, &iface)) + { + bool iface_found = FALSE; + + addrs = iface->addrs->create_enumerator(iface->addrs); + while (addrs->enumerate(addrs, &addr)) + { + if (iface_ip->ip_equals(iface_ip, addr->ip)) + { + iface_found = TRUE; + } + else if (virtual_ip->ip_equals(virtual_ip, addr->ip)) + { + addr->refcount++; + DBG2(DBG_KNL, "virtual IP %H already installed on %s", + virtual_ip, iface->ifname); + addrs->destroy(addrs); + ifaces->destroy(ifaces); + this->mutex->unlock(this->mutex); + return SUCCESS; + } + } + addrs->destroy(addrs); + + if (iface_found) + { + ifindex = iface->ifindex; + addr = malloc_thing(addr_entry_t); + addr->ip = virtual_ip->clone(virtual_ip); + addr->refcount = 0; + addr->virtual = TRUE; + addr->scope = RT_SCOPE_UNIVERSE; + iface->addrs->insert_last(iface->addrs, addr); + + if (manage_ipaddr(this, RTM_NEWADDR, NLM_F_CREATE | NLM_F_EXCL, + ifindex, virtual_ip) == SUCCESS) + { + while (get_vip_refcount(this, virtual_ip) == 0) + { /* wait until address appears */ + this->condvar->wait(this->condvar, this->mutex); + } + ifaces->destroy(ifaces); + this->mutex->unlock(this->mutex); + return SUCCESS; + } + ifaces->destroy(ifaces); + this->mutex->unlock(this->mutex); + DBG1(DBG_KNL, "adding virtual IP %H failed", virtual_ip); + return FAILED; + } + } + ifaces->destroy(ifaces); + this->mutex->unlock(this->mutex); + + DBG1(DBG_KNL, "interface address %H not found, unable to install" + "virtual IP %H", iface_ip, virtual_ip); + return FAILED; +} + +/** + * Implementation of kernel_net_t.del_ip. + */ +static status_t del_ip(private_kernel_netlink_net_t *this, host_t *virtual_ip) +{ + iface_entry_t *iface; + addr_entry_t *addr; + enumerator_t *addrs, *ifaces; + status_t status; + int ifindex; + + if (!this->install_virtual_ip) + { /* disabled by config */ + return SUCCESS; + } + + DBG2(DBG_KNL, "deleting virtual IP %H", virtual_ip); + + this->mutex->lock(this->mutex); + ifaces = this->ifaces->create_enumerator(this->ifaces); + while (ifaces->enumerate(ifaces, &iface)) + { + addrs = iface->addrs->create_enumerator(iface->addrs); + while (addrs->enumerate(addrs, &addr)) + { + if (virtual_ip->ip_equals(virtual_ip, addr->ip)) + { + ifindex = iface->ifindex; + if (addr->refcount == 1) + { + status = manage_ipaddr(this, RTM_DELADDR, 0, + ifindex, virtual_ip); + if (status == SUCCESS) + { /* wait until the address is really gone */ + while (get_vip_refcount(this, virtual_ip) > 0) + { + this->condvar->wait(this->condvar, this->mutex); + } + } + addrs->destroy(addrs); + ifaces->destroy(ifaces); + this->mutex->unlock(this->mutex); + return status; + } + else + { + addr->refcount--; + } + DBG2(DBG_KNL, "virtual IP %H used by other SAs, not deleting", + virtual_ip); + addrs->destroy(addrs); + ifaces->destroy(ifaces); + this->mutex->unlock(this->mutex); + return SUCCESS; + } + } + addrs->destroy(addrs); + } + ifaces->destroy(ifaces); + this->mutex->unlock(this->mutex); + + DBG2(DBG_KNL, "virtual IP %H not cached, unable to delete", virtual_ip); + return FAILED; +} + +/** + * Manages source routes in the routing table. + * By setting the appropriate nlmsg_type, the route gets added or removed. + */ +static status_t manage_srcroute(private_kernel_netlink_net_t *this, int nlmsg_type, + int flags, chunk_t dst_net, u_int8_t prefixlen, + host_t *gateway, host_t *src_ip, char *if_name) +{ + netlink_buf_t request; + struct nlmsghdr *hdr; + struct rtmsg *msg; + int ifindex; + chunk_t chunk; + + /* if route is 0.0.0.0/0, we can't install it, as it would + * overwrite the default route. Instead, we add two routes: + * 0.0.0.0/1 and 128.0.0.0/1 */ + if (this->routing_table == 0 && prefixlen == 0) + { + chunk_t half_net; + u_int8_t half_prefixlen; + status_t status; + + half_net = chunk_alloca(dst_net.len); + memset(half_net.ptr, 0, half_net.len); + half_prefixlen = 1; + + status = manage_srcroute(this, nlmsg_type, flags, half_net, half_prefixlen, + gateway, src_ip, if_name); + half_net.ptr[0] |= 0x80; + status = manage_srcroute(this, nlmsg_type, flags, half_net, half_prefixlen, + gateway, src_ip, if_name); + return status; + } + + memset(&request, 0, sizeof(request)); + + hdr = (struct nlmsghdr*)request; + hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | flags; + hdr->nlmsg_type = nlmsg_type; + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)); + + msg = (struct rtmsg*)NLMSG_DATA(hdr); + msg->rtm_family = src_ip->get_family(src_ip); + msg->rtm_dst_len = prefixlen; + msg->rtm_table = this->routing_table; + msg->rtm_protocol = RTPROT_STATIC; + msg->rtm_type = RTN_UNICAST; + msg->rtm_scope = RT_SCOPE_UNIVERSE; + + netlink_add_attribute(hdr, RTA_DST, dst_net, sizeof(request)); + chunk = src_ip->get_address(src_ip); + netlink_add_attribute(hdr, RTA_PREFSRC, chunk, sizeof(request)); + if (gateway && gateway->get_family(gateway) == src_ip->get_family(src_ip)) + { + chunk = gateway->get_address(gateway); + netlink_add_attribute(hdr, RTA_GATEWAY, chunk, sizeof(request)); + } + ifindex = get_interface_index(this, if_name); + chunk.ptr = (char*)&ifindex; + chunk.len = sizeof(ifindex); + netlink_add_attribute(hdr, RTA_OIF, chunk, sizeof(request)); + + return this->socket->send_ack(this->socket, hdr); +} + +/** + * Implementation of kernel_net_t.add_route. + */ +static status_t add_route(private_kernel_netlink_net_t *this, chunk_t dst_net, + u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name) +{ + return manage_srcroute(this, RTM_NEWROUTE, NLM_F_CREATE | NLM_F_EXCL, + dst_net, prefixlen, gateway, src_ip, if_name); +} + +/** + * Implementation of kernel_net_t.del_route. + */ +static status_t del_route(private_kernel_netlink_net_t *this, chunk_t dst_net, + u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name) +{ + return manage_srcroute(this, RTM_DELROUTE, 0, dst_net, prefixlen, + gateway, src_ip, if_name); +} + +/** + * Initialize a list of local addresses. + */ +static status_t init_address_list(private_kernel_netlink_net_t *this) +{ + netlink_buf_t request; + struct nlmsghdr *out, *current, *in; + struct rtgenmsg *msg; + size_t len; + enumerator_t *ifaces, *addrs; + iface_entry_t *iface; + addr_entry_t *addr; + + DBG1(DBG_KNL, "listening on interfaces:"); + + memset(&request, 0, sizeof(request)); + + in = (struct nlmsghdr*)&request; + in->nlmsg_len = NLMSG_LENGTH(sizeof(struct rtgenmsg)); + in->nlmsg_flags = NLM_F_REQUEST | NLM_F_MATCH | NLM_F_ROOT; + msg = (struct rtgenmsg*)NLMSG_DATA(in); + msg->rtgen_family = AF_UNSPEC; + + /* get all links */ + in->nlmsg_type = RTM_GETLINK; + if (this->socket->send(this->socket, in, &out, &len) != SUCCESS) + { + return FAILED; + } + current = out; + while (NLMSG_OK(current, len)) + { + switch (current->nlmsg_type) + { + case NLMSG_DONE: + break; + case RTM_NEWLINK: + process_link(this, current, FALSE); + /* fall through */ + default: + current = NLMSG_NEXT(current, len); + continue; + } + break; + } + free(out); + + /* get all interface addresses */ + in->nlmsg_type = RTM_GETADDR; + if (this->socket->send(this->socket, in, &out, &len) != SUCCESS) + { + return FAILED; + } + current = out; + while (NLMSG_OK(current, len)) + { + switch (current->nlmsg_type) + { + case NLMSG_DONE: + break; + case RTM_NEWADDR: + process_addr(this, current, FALSE); + /* fall through */ + default: + current = NLMSG_NEXT(current, len); + continue; + } + break; + } + free(out); + + this->mutex->lock(this->mutex); + ifaces = this->ifaces->create_enumerator(this->ifaces); + while (ifaces->enumerate(ifaces, &iface)) + { + if (iface->flags & IFF_UP) + { + DBG1(DBG_KNL, " %s", iface->ifname); + addrs = iface->addrs->create_enumerator(iface->addrs); + while (addrs->enumerate(addrs, (void**)&addr)) + { + DBG1(DBG_KNL, " %H", addr->ip); + } + addrs->destroy(addrs); + } + } + ifaces->destroy(ifaces); + this->mutex->unlock(this->mutex); + return SUCCESS; +} + +/** + * create or delete a rule to use our routing table + */ +static status_t manage_rule(private_kernel_netlink_net_t *this, int nlmsg_type, + int family, u_int32_t table, u_int32_t prio) +{ + netlink_buf_t request; + struct nlmsghdr *hdr; + struct rtmsg *msg; + chunk_t chunk; + + memset(&request, 0, sizeof(request)); + hdr = (struct nlmsghdr*)request; + hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK; + hdr->nlmsg_type = nlmsg_type; + if (nlmsg_type == RTM_NEWRULE) + { + hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL; + } + hdr->nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)); + + msg = (struct rtmsg*)NLMSG_DATA(hdr); + msg->rtm_table = table; + msg->rtm_family = family; + msg->rtm_protocol = RTPROT_BOOT; + msg->rtm_scope = RT_SCOPE_UNIVERSE; + msg->rtm_type = RTN_UNICAST; + + chunk = chunk_from_thing(prio); + netlink_add_attribute(hdr, RTA_PRIORITY, chunk, sizeof(request)); + + return this->socket->send_ack(this->socket, hdr); +} + +/** + * Implementation of kernel_netlink_net_t.destroy. + */ +static void destroy(private_kernel_netlink_net_t *this) +{ + if (this->routing_table) + { + manage_rule(this, RTM_DELRULE, AF_INET, this->routing_table, + this->routing_table_prio); + manage_rule(this, RTM_DELRULE, AF_INET6, this->routing_table, + this->routing_table_prio); + } + if (this->job) + { + this->job->cancel(this->job); + } + if (this->socket_events > 0) + { + close(this->socket_events); + } + DESTROY_IF(this->socket); + this->ifaces->destroy_function(this->ifaces, (void*)iface_entry_destroy); + this->rt_exclude->destroy(this->rt_exclude); + this->condvar->destroy(this->condvar); + this->mutex->destroy(this->mutex); + free(this); +} + +/* + * Described in header. + */ +kernel_netlink_net_t *kernel_netlink_net_create() +{ + private_kernel_netlink_net_t *this = malloc_thing(private_kernel_netlink_net_t); + struct sockaddr_nl addr; + enumerator_t *enumerator; + char *exclude; + + /* public functions */ + this->public.interface.get_interface = (char*(*)(kernel_net_t*,host_t*))get_interface_name; + this->public.interface.create_address_enumerator = (enumerator_t*(*)(kernel_net_t*,bool,bool))create_address_enumerator; + this->public.interface.get_source_addr = (host_t*(*)(kernel_net_t*, host_t *dest, host_t *src))get_source_addr; + this->public.interface.get_nexthop = (host_t*(*)(kernel_net_t*, host_t *dest))get_nexthop; + this->public.interface.add_ip = (status_t(*)(kernel_net_t*,host_t*,host_t*)) add_ip; + this->public.interface.del_ip = (status_t(*)(kernel_net_t*,host_t*)) del_ip; + this->public.interface.add_route = (status_t(*)(kernel_net_t*,chunk_t,u_int8_t,host_t*,host_t*,char*)) add_route; + this->public.interface.del_route = (status_t(*)(kernel_net_t*,chunk_t,u_int8_t,host_t*,host_t*,char*)) del_route; + this->public.interface.destroy = (void(*)(kernel_net_t*)) destroy; + + /* private members */ + this->ifaces = linked_list_create(); + this->mutex = mutex_create(MUTEX_TYPE_RECURSIVE); + this->condvar = condvar_create(CONDVAR_TYPE_DEFAULT); + timerclear(&this->last_roam); + this->routing_table = lib->settings->get_int(lib->settings, + "charon.routing_table", ROUTING_TABLE); + this->routing_table_prio = lib->settings->get_int(lib->settings, + "charon.routing_table_prio", ROUTING_TABLE_PRIO); + this->process_route = lib->settings->get_bool(lib->settings, + "charon.process_route", TRUE); + this->install_virtual_ip = lib->settings->get_bool(lib->settings, + "charon.install_virtual_ip", TRUE); + + this->rt_exclude = linked_list_create(); + exclude = lib->settings->get_str(lib->settings, + "charon.ignore_routing_tables", NULL); + if (exclude) + { + char *token; + uintptr_t table; + + enumerator = enumerator_create_token(exclude, " ", " "); + while (enumerator->enumerate(enumerator, &token)) + { + errno = 0; + table = strtoul(token, NULL, 10); + + if (errno == 0) + { + this->rt_exclude->insert_last(this->rt_exclude, (void*)table); + } + } + enumerator->destroy(enumerator); + } + + this->socket = netlink_socket_create(NETLINK_ROUTE); + this->job = NULL; + + memset(&addr, 0, sizeof(addr)); + addr.nl_family = AF_NETLINK; + + /* create and bind RT socket for events (address/interface/route changes) */ + this->socket_events = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); + if (this->socket_events < 0) + { + DBG1(DBG_KNL, "unable to create RT event socket"); + destroy(this); + return NULL; + } + addr.nl_groups = RTMGRP_IPV4_IFADDR | RTMGRP_IPV6_IFADDR | + RTMGRP_IPV4_ROUTE | RTMGRP_IPV4_ROUTE | RTMGRP_LINK; + if (bind(this->socket_events, (struct sockaddr*)&addr, sizeof(addr))) + { + DBG1(DBG_KNL, "unable to bind RT event socket"); + destroy(this); + return NULL; + } + + this->job = callback_job_create((callback_job_cb_t)receive_events, + this, NULL, NULL); + charon->processor->queue_job(charon->processor, (job_t*)this->job); + + if (init_address_list(this) != SUCCESS) + { + DBG1(DBG_KNL, "unable to get interface list"); + destroy(this); + return NULL; + } + + if (this->routing_table) + { + if (manage_rule(this, RTM_NEWRULE, AF_INET, this->routing_table, + this->routing_table_prio) != SUCCESS) + { + DBG1(DBG_KNL, "unable to create IPv4 routing table rule"); + } + if (manage_rule(this, RTM_NEWRULE, AF_INET6, this->routing_table, + this->routing_table_prio) != SUCCESS) + { + DBG1(DBG_KNL, "unable to create IPv6 routing table rule"); + } + } + + return &this->public; +} diff --git a/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.h b/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.h new file mode 100644 index 000000000..ff9831d3c --- /dev/null +++ b/src/libcharon/plugins/kernel_netlink/kernel_netlink_net.h @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup kernel_netlink_net_i kernel_netlink_net + * @{ @ingroup kernel_netlink + */ + +#ifndef KERNEL_NETLINK_NET_H_ +#define KERNEL_NETLINK_NET_H_ + +#include <kernel/kernel_net.h> + +typedef struct kernel_netlink_net_t kernel_netlink_net_t; + +/** + * Implementation of the kernel network interface using Netlink. + */ +struct kernel_netlink_net_t { + + /** + * Implements kernel_net_t interface + */ + kernel_net_t interface; +}; + +/** + * Create a netlink kernel network interface instance. + * + * @return kernel_netlink_net_t instance + */ +kernel_netlink_net_t *kernel_netlink_net_create(); + +#endif /** KERNEL_NETLINK_NET_H_ @}*/ diff --git a/src/libcharon/plugins/kernel_netlink/kernel_netlink_plugin.c b/src/libcharon/plugins/kernel_netlink/kernel_netlink_plugin.c new file mode 100644 index 000000000..4c61265aa --- /dev/null +++ b/src/libcharon/plugins/kernel_netlink/kernel_netlink_plugin.c @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + + +#include "kernel_netlink_plugin.h" + +#include "kernel_netlink_ipsec.h" +#include "kernel_netlink_net.h" + +#include <daemon.h> + +typedef struct private_kernel_netlink_plugin_t private_kernel_netlink_plugin_t; + +/** + * private data of kernel netlink plugin + */ +struct private_kernel_netlink_plugin_t { + /** + * implements plugin interface + */ + kernel_netlink_plugin_t public; +}; + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(private_kernel_netlink_plugin_t *this) +{ + charon->kernel_interface->remove_ipsec_interface(charon->kernel_interface, (kernel_ipsec_constructor_t)kernel_netlink_ipsec_create); + charon->kernel_interface->remove_net_interface(charon->kernel_interface, (kernel_net_constructor_t)kernel_netlink_net_create); + free(this); +} + +/* + * see header file + */ +plugin_t *kernel_netlink_plugin_create() +{ + private_kernel_netlink_plugin_t *this = malloc_thing(private_kernel_netlink_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + charon->kernel_interface->add_ipsec_interface(charon->kernel_interface, (kernel_ipsec_constructor_t)kernel_netlink_ipsec_create); + charon->kernel_interface->add_net_interface(charon->kernel_interface, (kernel_net_constructor_t)kernel_netlink_net_create); + + return &this->public.plugin; +} diff --git a/src/libcharon/plugins/kernel_netlink/kernel_netlink_plugin.h b/src/libcharon/plugins/kernel_netlink/kernel_netlink_plugin.h new file mode 100644 index 000000000..74c9ae24f --- /dev/null +++ b/src/libcharon/plugins/kernel_netlink/kernel_netlink_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup kernel_netlink kernel_netlink + * @ingroup cplugins + * + * @defgroup kernel_netlink_plugin kernel_netlink_plugin + * @{ @ingroup kernel_netlink + */ + +#ifndef KERNEL_NETLINK_PLUGIN_H_ +#define KERNEL_NETLINK_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct kernel_netlink_plugin_t kernel_netlink_plugin_t; + +/** + * netlink kernel interface plugin + */ +struct kernel_netlink_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** KERNEL_NETLINK_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/kernel_netlink/kernel_netlink_shared.c b/src/libcharon/plugins/kernel_netlink/kernel_netlink_shared.c new file mode 100644 index 000000000..5ed568150 --- /dev/null +++ b/src/libcharon/plugins/kernel_netlink/kernel_netlink_shared.c @@ -0,0 +1,306 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <sys/socket.h> +#include <linux/netlink.h> +#include <linux/rtnetlink.h> +#include <errno.h> +#include <unistd.h> + +#include "kernel_netlink_shared.h" + +#include <daemon.h> +#include <threading/mutex.h> + +typedef struct private_netlink_socket_t private_netlink_socket_t; + +/** + * Private variables and functions of netlink_socket_t class. + */ +struct private_netlink_socket_t { + /** + * public part of the netlink_socket_t object. + */ + netlink_socket_t public; + + /** + * mutex to lock access to netlink socket + */ + mutex_t *mutex; + + /** + * current sequence number for netlink request + */ + int seq; + + /** + * netlink socket protocol + */ + int protocol; + + /** + * netlink socket + */ + int socket; +}; + +/** + * Imported from kernel_netlink_ipsec.c + */ +extern enum_name_t *xfrm_msg_names; + +/** + * Implementation of netlink_socket_t.send + */ +static status_t netlink_send(private_netlink_socket_t *this, struct nlmsghdr *in, + struct nlmsghdr **out, size_t *out_len) +{ + int len, addr_len; + struct sockaddr_nl addr; + chunk_t result = chunk_empty, tmp; + struct nlmsghdr *msg, peek; + + this->mutex->lock(this->mutex); + + in->nlmsg_seq = ++this->seq; + in->nlmsg_pid = getpid(); + + memset(&addr, 0, sizeof(addr)); + addr.nl_family = AF_NETLINK; + addr.nl_pid = 0; + addr.nl_groups = 0; + + if (this->protocol == NETLINK_XFRM) + { + chunk_t in_chunk = { (u_char*)in, in->nlmsg_len }; + + DBG3(DBG_KNL, "sending %N: %B", xfrm_msg_names, in->nlmsg_type, &in_chunk); + } + + while (TRUE) + { + len = sendto(this->socket, in, in->nlmsg_len, 0, + (struct sockaddr*)&addr, sizeof(addr)); + + if (len != in->nlmsg_len) + { + if (errno == EINTR) + { + /* interrupted, try again */ + continue; + } + this->mutex->unlock(this->mutex); + DBG1(DBG_KNL, "error sending to netlink socket: %s", strerror(errno)); + return FAILED; + } + break; + } + + while (TRUE) + { + char buf[4096]; + tmp.len = sizeof(buf); + tmp.ptr = buf; + msg = (struct nlmsghdr*)tmp.ptr; + + memset(&addr, 0, sizeof(addr)); + addr.nl_family = AF_NETLINK; + addr.nl_pid = getpid(); + addr.nl_groups = 0; + addr_len = sizeof(addr); + + len = recvfrom(this->socket, tmp.ptr, tmp.len, 0, + (struct sockaddr*)&addr, &addr_len); + + if (len < 0) + { + if (errno == EINTR) + { + DBG1(DBG_KNL, "got interrupted"); + /* interrupted, try again */ + continue; + } + DBG1(DBG_KNL, "error reading from netlink socket: %s", strerror(errno)); + this->mutex->unlock(this->mutex); + free(result.ptr); + return FAILED; + } + if (!NLMSG_OK(msg, len)) + { + DBG1(DBG_KNL, "received corrupted netlink message"); + this->mutex->unlock(this->mutex); + free(result.ptr); + return FAILED; + } + if (msg->nlmsg_seq != this->seq) + { + DBG1(DBG_KNL, "received invalid netlink sequence number"); + if (msg->nlmsg_seq < this->seq) + { + continue; + } + this->mutex->unlock(this->mutex); + free(result.ptr); + return FAILED; + } + + tmp.len = len; + result.ptr = realloc(result.ptr, result.len + tmp.len); + memcpy(result.ptr + result.len, tmp.ptr, tmp.len); + result.len += tmp.len; + + /* NLM_F_MULTI flag does not seem to be set correctly, we use sequence + * numbers to detect multi header messages */ + len = recvfrom(this->socket, &peek, sizeof(peek), MSG_PEEK | MSG_DONTWAIT, + (struct sockaddr*)&addr, &addr_len); + + if (len == sizeof(peek) && peek.nlmsg_seq == this->seq) + { + /* seems to be multipart */ + continue; + } + break; + } + + *out_len = result.len; + *out = (struct nlmsghdr*)result.ptr; + + this->mutex->unlock(this->mutex); + + return SUCCESS; +} + +/** + * Implementation of netlink_socket_t.send_ack. + */ +static status_t netlink_send_ack(private_netlink_socket_t *this, struct nlmsghdr *in) +{ + struct nlmsghdr *out, *hdr; + size_t len; + + if (netlink_send(this, in, &out, &len) != SUCCESS) + { + return FAILED; + } + hdr = out; + while (NLMSG_OK(hdr, len)) + { + switch (hdr->nlmsg_type) + { + case NLMSG_ERROR: + { + struct nlmsgerr* err = (struct nlmsgerr*)NLMSG_DATA(hdr); + + if (err->error) + { + if (-err->error == EEXIST) + { /* do not report existing routes */ + free(out); + return ALREADY_DONE; + } + DBG1(DBG_KNL, "received netlink error: %s (%d)", + strerror(-err->error), -err->error); + free(out); + return FAILED; + } + free(out); + return SUCCESS; + } + default: + hdr = NLMSG_NEXT(hdr, len); + continue; + case NLMSG_DONE: + break; + } + break; + } + DBG1(DBG_KNL, "netlink request not acknowledged"); + free(out); + return FAILED; +} + +/** + * Implementation of netlink_socket_t.destroy. + */ +static void destroy(private_netlink_socket_t *this) +{ + if (this->socket > 0) + { + close(this->socket); + } + this->mutex->destroy(this->mutex); + free(this); +} + +/** + * Described in header. + */ +netlink_socket_t *netlink_socket_create(int protocol) +{ + private_netlink_socket_t *this = malloc_thing(private_netlink_socket_t); + struct sockaddr_nl addr; + + /* public functions */ + this->public.send = (status_t(*)(netlink_socket_t*,struct nlmsghdr*, struct nlmsghdr**, size_t*))netlink_send; + this->public.send_ack = (status_t(*)(netlink_socket_t*,struct nlmsghdr*))netlink_send_ack; + this->public.destroy = (void(*)(netlink_socket_t*))destroy; + + /* private members */ + this->seq = 200; + this->mutex = mutex_create(MUTEX_TYPE_DEFAULT); + + memset(&addr, 0, sizeof(addr)); + addr.nl_family = AF_NETLINK; + + this->protocol = protocol; + this->socket = socket(AF_NETLINK, SOCK_RAW, protocol); + if (this->socket < 0) + { + DBG1(DBG_KNL, "unable to create netlink socket"); + destroy(this); + return NULL; + } + + addr.nl_groups = 0; + if (bind(this->socket, (struct sockaddr*)&addr, sizeof(addr))) + { + DBG1(DBG_KNL, "unable to bind netlink socket"); + destroy(this); + return NULL; + } + + return &this->public; +} + +/** + * Described in header. + */ +void netlink_add_attribute(struct nlmsghdr *hdr, int rta_type, chunk_t data, + size_t buflen) +{ + struct rtattr *rta; + + if (NLMSG_ALIGN(hdr->nlmsg_len) + RTA_ALIGN(data.len) > buflen) + { + DBG1(DBG_KNL, "unable to add attribute, buffer too small"); + return; + } + + rta = (struct rtattr*)(((char*)hdr) + NLMSG_ALIGN(hdr->nlmsg_len)); + rta->rta_type = rta_type; + rta->rta_len = RTA_LENGTH(data.len); + memcpy(RTA_DATA(rta), data.ptr, data.len); + hdr->nlmsg_len = NLMSG_ALIGN(hdr->nlmsg_len) + rta->rta_len; +} diff --git a/src/libcharon/plugins/kernel_netlink/kernel_netlink_shared.h b/src/libcharon/plugins/kernel_netlink/kernel_netlink_shared.h new file mode 100644 index 000000000..dfd27a21a --- /dev/null +++ b/src/libcharon/plugins/kernel_netlink/kernel_netlink_shared.h @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#ifndef KERNEL_NETLINK_SHARED_H_ +#define KERNEL_NETLINK_SHARED_H_ + +#include <library.h> + +#include <linux/rtnetlink.h> + +/** + * General purpose netlink buffer. + * + * 1024 byte is currently sufficient for all operations. Some platform + * require an enforced aligment to four bytes (e.g. ARM). + */ +typedef u_char netlink_buf_t[1024] __attribute__((aligned(RTA_ALIGNTO))); + +typedef struct netlink_socket_t netlink_socket_t; + +/** + * Wrapper around a netlink socket. + */ +struct netlink_socket_t { + + /** + * Send a netlink message and wait for a reply. + * + * @param in netlink message to send + * @param out received netlink message + * @param out_len length of the received message + */ + status_t (*send)(netlink_socket_t *this, struct nlmsghdr *in, struct nlmsghdr **out, size_t *out_len); + + /** + * Send a netlink message and wait for its acknowledge. + * + * @param in netlink message to send + */ + status_t (*send_ack)(netlink_socket_t *this, struct nlmsghdr *in); + + /** + * Destroy the socket. + */ + void (*destroy)(netlink_socket_t *this); +}; + +/** + * Create a netlink_socket_t object. + * + * @param protocol protocol type (e.g. NETLINK_XFRM or NETLINK_ROUTE) + */ +netlink_socket_t *netlink_socket_create(int protocol); + +/** + * Creates an rtattr and adds it to the given netlink message. + * + * @param hdr netlink message + * @param rta_type type of the rtattr + * @param data data to add to the rtattr + * @param buflen length of the netlink message buffer + */ +void netlink_add_attribute(struct nlmsghdr *hdr, int rta_type, chunk_t data, size_t buflen); + +#endif /* KERNEL_NETLINK_SHARED_H_ */ diff --git a/src/libcharon/plugins/kernel_pfkey/Makefile.am b/src/libcharon/plugins/kernel_pfkey/Makefile.am new file mode 100644 index 000000000..778a7f9a9 --- /dev/null +++ b/src/libcharon/plugins/kernel_pfkey/Makefile.am @@ -0,0 +1,17 @@ + +INCLUDES = -I${linux_headers} -I$(top_srcdir)/src/libstrongswan \ + -I$(top_srcdir)/src/libhydra -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-kernel-pfkey.la +else +plugin_LTLIBRARIES = libstrongswan-kernel-pfkey.la +endif + +libstrongswan_kernel_pfkey_la_SOURCES = \ + kernel_pfkey_plugin.h kernel_pfkey_plugin.c \ + kernel_pfkey_ipsec.h kernel_pfkey_ipsec.c + +libstrongswan_kernel_pfkey_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/kernel_pfkey/Makefile.in b/src/libcharon/plugins/kernel_pfkey/Makefile.in new file mode 100644 index 000000000..2b028ba71 --- /dev/null +++ b/src/libcharon/plugins/kernel_pfkey/Makefile.in @@ -0,0 +1,590 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of 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b/src/libcharon/plugins/kernel_pfkey/kernel_pfkey_ipsec.c @@ -0,0 +1,2175 @@ +/* + * Copyright (C) 2008-2009 Tobias Brunner + * Copyright (C) 2008 Andreas Steffen + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <sys/types.h> +#include <sys/socket.h> + +#ifdef __FreeBSD__ +#include <limits.h> /* for LONG_MAX */ +#endif + +#ifdef HAVE_NET_PFKEYV2_H +#include <net/pfkeyv2.h> +#else +#include <stdint.h> +#include <linux/pfkeyv2.h> +#endif + +#ifdef SADB_X_EXT_NAT_T_TYPE +#define HAVE_NATT +#endif + +#ifdef HAVE_NETIPSEC_IPSEC_H +#include <netipsec/ipsec.h> +#elif defined(HAVE_NETINET6_IPSEC_H) +#include <netinet6/ipsec.h> +#else +#include <linux/ipsec.h> +#endif + +#ifdef HAVE_NATT +#ifdef HAVE_LINUX_UDP_H +#include <linux/udp.h> +#else +#include <netinet/udp.h> +#endif /*HAVE_LINUX_UDP_H*/ +#endif /*HAVE_NATT*/ + +#include <unistd.h> +#include <time.h> +#include <errno.h> + +#include "kernel_pfkey_ipsec.h" + +#include <daemon.h> +#include <utils/host.h> +#include <threading/thread.h> +#include <threading/mutex.h> +#include <processing/jobs/callback_job.h> +#include <processing/jobs/acquire_job.h> +#include <processing/jobs/migrate_job.h> +#include <processing/jobs/rekey_child_sa_job.h> +#include <processing/jobs/delete_child_sa_job.h> +#include <processing/jobs/update_sa_job.h> + +/** non linux specific */ +#ifndef IPPROTO_COMP +#define IPPROTO_COMP IPPROTO_IPCOMP +#endif + +#ifndef SADB_X_AALG_SHA2_256HMAC +#define SADB_X_AALG_SHA2_256HMAC SADB_X_AALG_SHA2_256 +#define SADB_X_AALG_SHA2_384HMAC SADB_X_AALG_SHA2_384 +#define SADB_X_AALG_SHA2_512HMAC SADB_X_AALG_SHA2_512 +#endif + +#ifndef SADB_X_EALG_AESCBC +#define SADB_X_EALG_AESCBC SADB_X_EALG_AES +#endif + +#ifndef SADB_X_EALG_CASTCBC +#define SADB_X_EALG_CASTCBC SADB_X_EALG_CAST128CBC +#endif + +#ifndef SOL_IP +#define SOL_IP IPPROTO_IP +#define SOL_IPV6 IPPROTO_IPV6 +#endif + +/** from linux/in.h */ +#ifndef IP_IPSEC_POLICY +#define IP_IPSEC_POLICY 16 +#endif + +/** missing on uclibc */ +#ifndef IPV6_IPSEC_POLICY +#define IPV6_IPSEC_POLICY 34 +#endif + +/** default priority of installed policies */ +#define PRIO_LOW 3000 +#define PRIO_HIGH 2000 + +#ifdef __APPLE__ +/** from xnu/bsd/net/pfkeyv2.h */ +#define SADB_X_EXT_NATT 0x002 + struct sadb_sa_2 { + struct sadb_sa sa; + u_int16_t sadb_sa_natt_port; + u_int16_t sadb_reserved0; + u_int32_t sadb_reserved1; + }; +#endif + +/** buffer size for PF_KEY messages */ +#define PFKEY_BUFFER_SIZE 4096 + +/** PF_KEY messages are 64 bit aligned */ +#define PFKEY_ALIGNMENT 8 +/** aligns len to 64 bits */ +#define PFKEY_ALIGN(len) (((len) + PFKEY_ALIGNMENT - 1) & ~(PFKEY_ALIGNMENT - 1)) +/** calculates the properly padded length in 64 bit chunks */ +#define PFKEY_LEN(len) ((PFKEY_ALIGN(len) / PFKEY_ALIGNMENT)) +/** calculates user mode length i.e. in bytes */ +#define PFKEY_USER_LEN(len) ((len) * PFKEY_ALIGNMENT) + +/** given a PF_KEY message header and an extension this updates the length in the header */ +#define PFKEY_EXT_ADD(msg, ext) ((msg)->sadb_msg_len += ((struct sadb_ext*)ext)->sadb_ext_len) +/** given a PF_KEY message header this returns a pointer to the next extension */ +#define PFKEY_EXT_ADD_NEXT(msg) ((struct sadb_ext*)(((char*)(msg)) + PFKEY_USER_LEN((msg)->sadb_msg_len))) +/** copy an extension and append it to a PF_KEY message */ +#define PFKEY_EXT_COPY(msg, ext) (PFKEY_EXT_ADD(msg, memcpy(PFKEY_EXT_ADD_NEXT(msg), ext, PFKEY_USER_LEN(((struct sadb_ext*)ext)->sadb_ext_len)))) +/** given a PF_KEY extension this returns a pointer to the next extension */ +#define PFKEY_EXT_NEXT(ext) ((struct sadb_ext*)(((char*)(ext)) + PFKEY_USER_LEN(((struct sadb_ext*)ext)->sadb_ext_len))) +/** given a PF_KEY extension this returns a pointer to the next extension also updates len (len in 64 bit words) */ +#define PFKEY_EXT_NEXT_LEN(ext,len) ((len) -= (ext)->sadb_ext_len, PFKEY_EXT_NEXT(ext)) +/** true if ext has a valid length and len is large enough to contain ext (assuming len in 64 bit words) */ +#define PFKEY_EXT_OK(ext,len) ((len) >= PFKEY_LEN(sizeof(struct sadb_ext)) && \ + (ext)->sadb_ext_len >= PFKEY_LEN(sizeof(struct sadb_ext)) && \ + (ext)->sadb_ext_len <= (len)) + +typedef struct private_kernel_pfkey_ipsec_t private_kernel_pfkey_ipsec_t; + +/** + * Private variables and functions of kernel_pfkey class. + */ +struct private_kernel_pfkey_ipsec_t +{ + /** + * Public part of the kernel_pfkey_t object. + */ + kernel_pfkey_ipsec_t public; + + /** + * mutex to lock access to various lists + */ + mutex_t *mutex; + + /** + * List of installed policies (policy_entry_t) + */ + linked_list_t *policies; + + /** + * whether to install routes along policies + */ + bool install_routes; + + /** + * job receiving PF_KEY events + */ + callback_job_t *job; + + /** + * mutex to lock access to the PF_KEY socket + */ + mutex_t *mutex_pfkey; + + /** + * PF_KEY socket to communicate with the kernel + */ + int socket; + + /** + * PF_KEY socket to receive acquire and expire events + */ + int socket_events; + + /** + * sequence number for messages sent to the kernel + */ + int seq; +}; + +typedef struct route_entry_t route_entry_t; + +/** + * installed routing entry + */ +struct route_entry_t { + /** Name of the interface the route is bound to */ + char *if_name; + + /** Source ip of the route */ + host_t *src_ip; + + /** gateway for this route */ + host_t *gateway; + + /** Destination net */ + chunk_t dst_net; + + /** Destination net prefixlen */ + u_int8_t prefixlen; +}; + +/** + * destroy an route_entry_t object + */ +static void route_entry_destroy(route_entry_t *this) +{ + free(this->if_name); + DESTROY_IF(this->src_ip); + DESTROY_IF(this->gateway); + chunk_free(&this->dst_net); + free(this); +} + +typedef struct policy_entry_t policy_entry_t; + +/** + * installed kernel policy. + */ +struct policy_entry_t { + + /** reqid of this policy */ + u_int32_t reqid; + + /** index assigned by the kernel */ + u_int32_t index; + + /** direction of this policy: in, out, forward */ + u_int8_t direction; + + /** parameters of installed policy */ + struct { + /** subnet and port */ + host_t *net; + /** subnet mask */ + u_int8_t mask; + /** protocol */ + u_int8_t proto; + } src, dst; + + /** associated route installed for this policy */ + route_entry_t *route; + + /** by how many CHILD_SA's this policy is used */ + u_int refcount; +}; + +/** + * create a policy_entry_t object + */ +static policy_entry_t *create_policy_entry(traffic_selector_t *src_ts, + traffic_selector_t *dst_ts, policy_dir_t dir, u_int32_t reqid) +{ + policy_entry_t *policy = malloc_thing(policy_entry_t); + policy->reqid = reqid; + policy->index = 0; + policy->direction = dir; + policy->route = NULL; + policy->refcount = 0; + + src_ts->to_subnet(src_ts, &policy->src.net, &policy->src.mask); + dst_ts->to_subnet(dst_ts, &policy->dst.net, &policy->dst.mask); + + /* src or dest proto may be "any" (0), use more restrictive one */ + policy->src.proto = max(src_ts->get_protocol(src_ts), dst_ts->get_protocol(dst_ts)); + policy->src.proto = policy->src.proto ? policy->src.proto : IPSEC_PROTO_ANY; + policy->dst.proto = policy->src.proto; + + return policy; +} + +/** + * destroy a policy_entry_t object + */ +static void policy_entry_destroy(policy_entry_t *this) +{ + DESTROY_IF(this->src.net); + DESTROY_IF(this->dst.net); + if (this->route) + { + route_entry_destroy(this->route); + } + free(this); +} + +/** + * compares two policy_entry_t + */ +static inline bool policy_entry_equals(policy_entry_t *current, policy_entry_t *policy) +{ + return current->direction == policy->direction && + current->src.proto == policy->src.proto && + current->dst.proto == policy->dst.proto && + current->src.mask == policy->src.mask && + current->dst.mask == policy->dst.mask && + current->src.net->equals(current->src.net, policy->src.net) && + current->dst.net->equals(current->dst.net, policy->dst.net); +} + +/** + * compare the given kernel index with that of a policy + */ +static inline bool policy_entry_match_byindex(policy_entry_t *current, u_int32_t *index) +{ + return current->index == *index; +} + +typedef struct pfkey_msg_t pfkey_msg_t; + +struct pfkey_msg_t +{ + /** + * PF_KEY message base + */ + struct sadb_msg *msg; + + /** + * PF_KEY message extensions + */ + union { + struct sadb_ext *ext[SADB_EXT_MAX + 1]; + struct { + struct sadb_ext *reserved; /* SADB_EXT_RESERVED */ + struct sadb_sa *sa; /* SADB_EXT_SA */ + struct sadb_lifetime *lft_current; /* SADB_EXT_LIFETIME_CURRENT */ + struct sadb_lifetime *lft_hard; /* SADB_EXT_LIFETIME_HARD */ + struct sadb_lifetime *lft_soft; /* SADB_EXT_LIFETIME_SOFT */ + struct sadb_address *src; /* SADB_EXT_ADDRESS_SRC */ + struct sadb_address *dst; /* SADB_EXT_ADDRESS_DST */ + struct sadb_address *proxy; /* SADB_EXT_ADDRESS_PROXY */ + struct sadb_key *key_auth; /* SADB_EXT_KEY_AUTH */ + struct sadb_key *key_encr; /* SADB_EXT_KEY_ENCRYPT */ + struct sadb_ident *id_src; /* SADB_EXT_IDENTITY_SRC */ + struct sadb_ident *id_dst; /* SADB_EXT_IDENTITY_DST */ + struct sadb_sens *sensitivity; /* SADB_EXT_SENSITIVITY */ + struct sadb_prop *proposal; /* SADB_EXT_PROPOSAL */ + struct sadb_supported *supported_auth; /* SADB_EXT_SUPPORTED_AUTH */ + struct sadb_supported *supported_encr; /* SADB_EXT_SUPPORTED_ENCRYPT */ + struct sadb_spirange *spirange; /* SADB_EXT_SPIRANGE */ + struct sadb_x_kmprivate *x_kmprivate; /* SADB_X_EXT_KMPRIVATE */ + struct sadb_x_policy *x_policy; /* SADB_X_EXT_POLICY */ + struct sadb_x_sa2 *x_sa2; /* SADB_X_EXT_SA2 */ + struct sadb_x_nat_t_type *x_natt_type; /* SADB_X_EXT_NAT_T_TYPE */ + struct sadb_x_nat_t_port *x_natt_sport; /* SADB_X_EXT_NAT_T_SPORT */ + struct sadb_x_nat_t_port *x_natt_dport; /* SADB_X_EXT_NAT_T_DPORT */ + struct sadb_address *x_natt_oa; /* SADB_X_EXT_NAT_T_OA */ + struct sadb_x_sec_ctx *x_sec_ctx; /* SADB_X_EXT_SEC_CTX */ + struct sadb_x_kmaddress *x_kmaddress; /* SADB_X_EXT_KMADDRESS */ + } __attribute__((__packed__)); + }; +}; + +ENUM(sadb_ext_type_names, SADB_EXT_RESERVED, SADB_EXT_MAX, + "SADB_EXT_RESERVED", + "SADB_EXT_SA", + "SADB_EXT_LIFETIME_CURRENT", + "SADB_EXT_LIFETIME_HARD", + "SADB_EXT_LIFETIME_SOFT", + "SADB_EXT_ADDRESS_SRC", + "SADB_EXT_ADDRESS_DST", + "SADB_EXT_ADDRESS_PROXY", + "SADB_EXT_KEY_AUTH", + "SADB_EXT_KEY_ENCRYPT", + "SADB_EXT_IDENTITY_SRC", + "SADB_EXT_IDENTITY_DST", + "SADB_EXT_SENSITIVITY", + "SADB_EXT_PROPOSAL", + "SADB_EXT_SUPPORTED_AUTH", + "SADB_EXT_SUPPORTED_ENCRYPT", + "SADB_EXT_SPIRANGE", + "SADB_X_EXT_KMPRIVATE", + "SADB_X_EXT_POLICY", + "SADB_X_EXT_SA2", + "SADB_X_EXT_NAT_T_TYPE", + "SADB_X_EXT_NAT_T_SPORT", + "SADB_X_EXT_NAT_T_DPORT", + "SADB_X_EXT_NAT_T_OA", + "SADB_X_EXT_SEC_CTX", + "SADB_X_EXT_KMADDRESS" +); + +/** + * convert a IKEv2 specific protocol identifier to the PF_KEY sa type + */ +static u_int8_t proto_ike2satype(protocol_id_t proto) +{ + switch (proto) + { + case PROTO_ESP: + return SADB_SATYPE_ESP; + case PROTO_AH: + return SADB_SATYPE_AH; + case IPPROTO_COMP: + return SADB_X_SATYPE_IPCOMP; + default: + return proto; + } +} + +/** + * convert a PF_KEY sa type to a IKEv2 specific protocol identifier + */ +static protocol_id_t proto_satype2ike(u_int8_t proto) +{ + switch (proto) + { + case SADB_SATYPE_ESP: + return PROTO_ESP; + case SADB_SATYPE_AH: + return PROTO_AH; + case SADB_X_SATYPE_IPCOMP: + return IPPROTO_COMP; + default: + return proto; + } +} + +/** + * convert a IKEv2 specific protocol identifier to the IP protocol identifier + */ +static u_int8_t proto_ike2ip(protocol_id_t proto) +{ + switch (proto) + { + case PROTO_ESP: + return IPPROTO_ESP; + case PROTO_AH: + return IPPROTO_AH; + default: + return proto; + } +} + +/** + * convert the general ipsec mode to the one defined in ipsec.h + */ +static u_int8_t mode2kernel(ipsec_mode_t mode) +{ + switch (mode) + { + case MODE_TRANSPORT: + return IPSEC_MODE_TRANSPORT; + case MODE_TUNNEL: + return IPSEC_MODE_TUNNEL; +#ifdef HAVE_IPSEC_MODE_BEET + case MODE_BEET: + return IPSEC_MODE_BEET; +#endif + default: + return mode; + } +} + +/** + * convert the general policy direction to the one defined in ipsec.h + */ +static u_int8_t dir2kernel(policy_dir_t dir) +{ + switch (dir) + { + case POLICY_IN: + return IPSEC_DIR_INBOUND; + case POLICY_OUT: + return IPSEC_DIR_OUTBOUND; +#ifdef HAVE_IPSEC_DIR_FWD + case POLICY_FWD: + return IPSEC_DIR_FWD; +#endif + default: + return IPSEC_DIR_INVALID; + } +} + +#ifdef SADB_X_MIGRATE +/** + * convert the policy direction in ipsec.h to the general one. + */ +static policy_dir_t kernel2dir(u_int8_t dir) +{ + switch (dir) + { + case IPSEC_DIR_INBOUND: + return POLICY_IN; + case IPSEC_DIR_OUTBOUND: + return POLICY_OUT; +#ifdef HAVE_IPSEC_DIR_FWD + case IPSEC_DIR_FWD: + return POLICY_FWD; +#endif + default: + return dir; + } +} +#endif /*SADB_X_MIGRATE*/ + +typedef struct kernel_algorithm_t kernel_algorithm_t; + +/** + * Mapping of IKEv2 algorithms to PF_KEY algorithms + */ +struct kernel_algorithm_t { + /** + * Identifier specified in IKEv2 + */ + int ikev2; + + /** + * Identifier as defined in pfkeyv2.h + */ + int kernel; +}; + +#define END_OF_LIST -1 + +/** + * Algorithms for encryption + */ +static kernel_algorithm_t encryption_algs[] = { +/* {ENCR_DES_IV64, 0 }, */ + {ENCR_DES, SADB_EALG_DESCBC }, + {ENCR_3DES, SADB_EALG_3DESCBC }, +/* {ENCR_RC5, 0 }, */ +/* {ENCR_IDEA, 0 }, */ + {ENCR_CAST, SADB_X_EALG_CASTCBC }, + {ENCR_BLOWFISH, SADB_X_EALG_BLOWFISHCBC }, +/* {ENCR_3IDEA, 0 }, */ +/* {ENCR_DES_IV32, 0 }, */ + {ENCR_NULL, SADB_EALG_NULL }, + {ENCR_AES_CBC, SADB_X_EALG_AESCBC }, +/* {ENCR_AES_CTR, SADB_X_EALG_AESCTR }, */ +/* {ENCR_AES_CCM_ICV8, SADB_X_EALG_AES_CCM_ICV8 }, */ +/* {ENCR_AES_CCM_ICV12, SADB_X_EALG_AES_CCM_ICV12 }, */ +/* {ENCR_AES_CCM_ICV16, SADB_X_EALG_AES_CCM_ICV16 }, */ +/* {ENCR_AES_GCM_ICV8, SADB_X_EALG_AES_GCM_ICV8 }, */ +/* {ENCR_AES_GCM_ICV12, SADB_X_EALG_AES_GCM_ICV12 }, */ +/* {ENCR_AES_GCM_ICV16, SADB_X_EALG_AES_GCM_ICV16 }, */ + {END_OF_LIST, 0 }, +}; + +/** + * Algorithms for integrity protection + */ +static kernel_algorithm_t integrity_algs[] = { + {AUTH_HMAC_MD5_96, SADB_AALG_MD5HMAC }, + {AUTH_HMAC_SHA1_96, SADB_AALG_SHA1HMAC }, + {AUTH_HMAC_SHA2_256_128, SADB_X_AALG_SHA2_256HMAC }, + {AUTH_HMAC_SHA2_384_192, SADB_X_AALG_SHA2_384HMAC }, + {AUTH_HMAC_SHA2_512_256, SADB_X_AALG_SHA2_512HMAC }, +/* {AUTH_DES_MAC, 0, }, */ +/* {AUTH_KPDK_MD5, 0, }, */ +#ifdef SADB_X_AALG_AES_XCBC_MAC + {AUTH_AES_XCBC_96, SADB_X_AALG_AES_XCBC_MAC, }, +#endif + {END_OF_LIST, 0, }, +}; + +#if 0 +/** + * Algorithms for IPComp, unused yet + */ +static kernel_algorithm_t compression_algs[] = { +/* {IPCOMP_OUI, 0 }, */ + {IPCOMP_DEFLATE, SADB_X_CALG_DEFLATE }, + {IPCOMP_LZS, SADB_X_CALG_LZS }, + {IPCOMP_LZJH, SADB_X_CALG_LZJH }, + {END_OF_LIST, 0 }, +}; +#endif + +/** + * Look up a kernel algorithm ID and its key size + */ +static int lookup_algorithm(kernel_algorithm_t *list, int ikev2) +{ + while (list->ikev2 != END_OF_LIST) + { + if (ikev2 == list->ikev2) + { + return list->kernel; + } + list++; + } + return 0; +} + +/** + * add a host behind a sadb_address extension + */ +static void host2ext(host_t *host, struct sadb_address *ext) +{ + sockaddr_t *host_addr = host->get_sockaddr(host); + socklen_t *len = host->get_sockaddr_len(host); +#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN + host_addr->sa_len = *len; +#endif + memcpy((char*)(ext + 1), host_addr, *len); + ext->sadb_address_len = PFKEY_LEN(sizeof(*ext) + *len); +} + +/** + * add a host to the given sadb_msg + */ +static void add_addr_ext(struct sadb_msg *msg, host_t *host, u_int16_t type, + u_int8_t proto, u_int8_t prefixlen) +{ + struct sadb_address *addr = (struct sadb_address*)PFKEY_EXT_ADD_NEXT(msg); + addr->sadb_address_exttype = type; + addr->sadb_address_proto = proto; + addr->sadb_address_prefixlen = prefixlen; + host2ext(host, addr); + PFKEY_EXT_ADD(msg, addr); +} + +/** + * adds an empty address extension to the given sadb_msg + */ +static void add_anyaddr_ext(struct sadb_msg *msg, int family, u_int8_t type) +{ + socklen_t len = (family == AF_INET) ? sizeof(struct sockaddr_in) : + sizeof(struct sockaddr_in6); + struct sadb_address *addr = (struct sadb_address*)PFKEY_EXT_ADD_NEXT(msg); + addr->sadb_address_exttype = type; + sockaddr_t *saddr = (sockaddr_t*)(addr + 1); + saddr->sa_family = family; +#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN + saddr->sa_len = len; +#endif + addr->sadb_address_len = PFKEY_LEN(sizeof(*addr) + len); + PFKEY_EXT_ADD(msg, addr); +} + +#ifdef HAVE_NATT +/** + * add udp encap extensions to a sadb_msg + */ +static void add_encap_ext(struct sadb_msg *msg, host_t *src, host_t *dst) +{ + struct sadb_x_nat_t_type* nat_type; + struct sadb_x_nat_t_port* nat_port; + + nat_type = (struct sadb_x_nat_t_type*)PFKEY_EXT_ADD_NEXT(msg); + nat_type->sadb_x_nat_t_type_exttype = SADB_X_EXT_NAT_T_TYPE; + nat_type->sadb_x_nat_t_type_len = PFKEY_LEN(sizeof(struct sadb_x_nat_t_type)); + nat_type->sadb_x_nat_t_type_type = UDP_ENCAP_ESPINUDP; + PFKEY_EXT_ADD(msg, nat_type); + + nat_port = (struct sadb_x_nat_t_port*)PFKEY_EXT_ADD_NEXT(msg); + nat_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_SPORT; + nat_port->sadb_x_nat_t_port_len = PFKEY_LEN(sizeof(struct sadb_x_nat_t_port)); + nat_port->sadb_x_nat_t_port_port = htons(src->get_port(src)); + PFKEY_EXT_ADD(msg, nat_port); + + nat_port = (struct sadb_x_nat_t_port*)PFKEY_EXT_ADD_NEXT(msg); + nat_port->sadb_x_nat_t_port_exttype = SADB_X_EXT_NAT_T_DPORT; + nat_port->sadb_x_nat_t_port_len = PFKEY_LEN(sizeof(struct sadb_x_nat_t_port)); + nat_port->sadb_x_nat_t_port_port = htons(dst->get_port(dst)); + PFKEY_EXT_ADD(msg, nat_port); +} +#endif /*HAVE_NATT*/ + +/** + * Convert a sadb_address to a traffic_selector + */ +static traffic_selector_t* sadb_address2ts(struct sadb_address *address) +{ + traffic_selector_t *ts; + host_t *host; + + /* The Linux 2.6 kernel does not set the protocol and port information + * in the src and dst sadb_address extensions of the SADB_ACQUIRE message. + */ + host = host_create_from_sockaddr((sockaddr_t*)&address[1]) ; + ts = traffic_selector_create_from_subnet(host, address->sadb_address_prefixlen, + address->sadb_address_proto, host->get_port(host)); + return ts; +} + +/** + * Parses a pfkey message received from the kernel + */ +static status_t parse_pfkey_message(struct sadb_msg *msg, pfkey_msg_t *out) +{ + struct sadb_ext* ext; + size_t len; + + memset(out, 0, sizeof(pfkey_msg_t)); + out->msg = msg; + + len = msg->sadb_msg_len; + len -= PFKEY_LEN(sizeof(struct sadb_msg)); + + ext = (struct sadb_ext*)(((char*)msg) + sizeof(struct sadb_msg)); + + while (len >= PFKEY_LEN(sizeof(struct sadb_ext))) + { + DBG3(DBG_KNL, " %N", sadb_ext_type_names, ext->sadb_ext_type); + if (ext->sadb_ext_len < PFKEY_LEN(sizeof(struct sadb_ext)) || + ext->sadb_ext_len > len) + { + DBG1(DBG_KNL, "length of %N extension is invalid", + sadb_ext_type_names, ext->sadb_ext_type); + break; + } + + if ((ext->sadb_ext_type > SADB_EXT_MAX) || (!ext->sadb_ext_type)) + { + DBG1(DBG_KNL, "type of PF_KEY extension (%d) is invalid", ext->sadb_ext_type); + break; + } + + if (out->ext[ext->sadb_ext_type]) + { + DBG1(DBG_KNL, "duplicate %N extension", + sadb_ext_type_names, ext->sadb_ext_type); + break; + } + + out->ext[ext->sadb_ext_type] = ext; + ext = PFKEY_EXT_NEXT_LEN(ext, len); + } + + if (len) + { + DBG1(DBG_KNL, "PF_KEY message length is invalid"); + return FAILED; + } + + return SUCCESS; +} + +/** + * Send a message to a specific PF_KEY socket and handle the response. + */ +static status_t pfkey_send_socket(private_kernel_pfkey_ipsec_t *this, int socket, + struct sadb_msg *in, struct sadb_msg **out, size_t *out_len) +{ + unsigned char buf[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg; + int in_len, len; + + this->mutex_pfkey->lock(this->mutex_pfkey); + + /* FIXME: our usage of sequence numbers is probably wrong. check RFC 2367, + * in particular the behavior in response to an SADB_ACQUIRE. */ + in->sadb_msg_seq = ++this->seq; + in->sadb_msg_pid = getpid(); + + in_len = PFKEY_USER_LEN(in->sadb_msg_len); + + while (TRUE) + { + len = send(socket, in, in_len, 0); + + if (len != in_len) + { + if (errno == EINTR) + { + /* interrupted, try again */ + continue; + } + this->mutex_pfkey->unlock(this->mutex_pfkey); + DBG1(DBG_KNL, "error sending to PF_KEY socket: %s", strerror(errno)); + return FAILED; + } + break; + } + + while (TRUE) + { + msg = (struct sadb_msg*)buf; + + len = recv(socket, buf, sizeof(buf), 0); + + if (len < 0) + { + if (errno == EINTR) + { + DBG1(DBG_KNL, "got interrupted"); + /* interrupted, try again */ + continue; + } + DBG1(DBG_KNL, "error reading from PF_KEY socket: %s", strerror(errno)); + this->mutex_pfkey->unlock(this->mutex_pfkey); + return FAILED; + } + if (len < sizeof(struct sadb_msg) || + msg->sadb_msg_len < PFKEY_LEN(sizeof(struct sadb_msg))) + { + DBG1(DBG_KNL, "received corrupted PF_KEY message"); + this->mutex_pfkey->unlock(this->mutex_pfkey); + return FAILED; + } + if (msg->sadb_msg_len > len / PFKEY_ALIGNMENT) + { + DBG1(DBG_KNL, "buffer was too small to receive the complete PF_KEY message"); + this->mutex_pfkey->unlock(this->mutex_pfkey); + return FAILED; + } + if (msg->sadb_msg_pid != in->sadb_msg_pid) + { + DBG2(DBG_KNL, "received PF_KEY message is not intended for us"); + continue; + } + if (msg->sadb_msg_seq != this->seq) + { + DBG1(DBG_KNL, "received PF_KEY message with unexpected sequence " + "number, was %d expected %d", msg->sadb_msg_seq, this->seq); + if (msg->sadb_msg_seq == 0) + { + /* FreeBSD and Mac OS X do this for the response to + * SADB_X_SPDGET (but not for the response to SADB_GET). + * FreeBSD: 'key_spdget' in /usr/src/sys/netipsec/key.c. */ + } + else if (msg->sadb_msg_seq < this->seq) + { + continue; + } + else + { + this->mutex_pfkey->unlock(this->mutex_pfkey); + return FAILED; + } + } + if (msg->sadb_msg_type != in->sadb_msg_type) + { + DBG2(DBG_KNL, "received PF_KEY message of wrong type, " + "was %d expected %d, ignoring", + msg->sadb_msg_type, in->sadb_msg_type); + } + break; + } + + *out_len = len; + *out = (struct sadb_msg*)malloc(len); + memcpy(*out, buf, len); + + this->mutex_pfkey->unlock(this->mutex_pfkey); + + return SUCCESS; +} + +/** + * Send a message to the default PF_KEY socket and handle the response. + */ +static status_t pfkey_send(private_kernel_pfkey_ipsec_t *this, + struct sadb_msg *in, struct sadb_msg **out, size_t *out_len) +{ + return pfkey_send_socket(this, this->socket, in, out, out_len); +} + +/** + * Process a SADB_ACQUIRE message from the kernel + */ +static void process_acquire(private_kernel_pfkey_ipsec_t *this, struct sadb_msg* msg) +{ + pfkey_msg_t response; + u_int32_t index, reqid = 0; + traffic_selector_t *src_ts, *dst_ts; + policy_entry_t *policy; + job_t *job; + + switch (msg->sadb_msg_satype) + { + case SADB_SATYPE_UNSPEC: + case SADB_SATYPE_ESP: + case SADB_SATYPE_AH: + break; + default: + /* acquire for AH/ESP only */ + return; + } + DBG2(DBG_KNL, "received an SADB_ACQUIRE"); + + if (parse_pfkey_message(msg, &response) != SUCCESS) + { + DBG1(DBG_KNL, "parsing SADB_ACQUIRE from kernel failed"); + return; + } + + index = response.x_policy->sadb_x_policy_id; + this->mutex->lock(this->mutex); + if (this->policies->find_first(this->policies, + (linked_list_match_t)policy_entry_match_byindex, (void**)&policy, &index) == SUCCESS) + { + reqid = policy->reqid; + } + else + { + DBG1(DBG_KNL, "received an SADB_ACQUIRE with policy id %d but no matching policy found", + index); + } + src_ts = sadb_address2ts(response.src); + dst_ts = sadb_address2ts(response.dst); + this->mutex->unlock(this->mutex); + + DBG1(DBG_KNL, "creating acquire job for policy %R === %R with reqid {%u}", + src_ts, dst_ts, reqid); + job = (job_t*)acquire_job_create(reqid, src_ts, dst_ts); + charon->processor->queue_job(charon->processor, job); +} + +/** + * Process a SADB_EXPIRE message from the kernel + */ +static void process_expire(private_kernel_pfkey_ipsec_t *this, struct sadb_msg* msg) +{ + pfkey_msg_t response; + protocol_id_t protocol; + u_int32_t spi, reqid; + bool hard; + job_t *job; + + DBG2(DBG_KNL, "received an SADB_EXPIRE"); + + if (parse_pfkey_message(msg, &response) != SUCCESS) + { + DBG1(DBG_KNL, "parsing SADB_EXPIRE from kernel failed"); + return; + } + + protocol = proto_satype2ike(msg->sadb_msg_satype); + spi = response.sa->sadb_sa_spi; + reqid = response.x_sa2->sadb_x_sa2_reqid; + hard = response.lft_hard != NULL; + + if (protocol != PROTO_ESP && protocol != PROTO_AH) + { + DBG2(DBG_KNL, "ignoring SADB_EXPIRE for SA with SPI %.8x and reqid {%u} " + "which is not a CHILD_SA", ntohl(spi), reqid); + return; + } + + DBG1(DBG_KNL, "creating %s job for %N CHILD_SA with SPI %.8x and reqid {%u}", + hard ? "delete" : "rekey", protocol_id_names, + protocol, ntohl(spi), reqid); + if (hard) + { + job = (job_t*)delete_child_sa_job_create(reqid, protocol, spi); + } + else + { + job = (job_t*)rekey_child_sa_job_create(reqid, protocol, spi); + } + charon->processor->queue_job(charon->processor, job); +} + +#ifdef SADB_X_MIGRATE +/** + * Process a SADB_X_MIGRATE message from the kernel + */ +static void process_migrate(private_kernel_pfkey_ipsec_t *this, struct sadb_msg* msg) +{ + pfkey_msg_t response; + traffic_selector_t *src_ts, *dst_ts; + policy_dir_t dir; + u_int32_t reqid = 0; + host_t *local = NULL, *remote = NULL; + job_t *job; + + DBG2(DBG_KNL, "received an SADB_X_MIGRATE"); + + if (parse_pfkey_message(msg, &response) != SUCCESS) + { + DBG1(DBG_KNL, "parsing SADB_X_MIGRATE from kernel failed"); + return; + } + src_ts = sadb_address2ts(response.src); + dst_ts = sadb_address2ts(response.dst); + dir = kernel2dir(response.x_policy->sadb_x_policy_dir); + DBG2(DBG_KNL, " policy %R === %R %N, id %u", src_ts, dst_ts, + policy_dir_names, dir); + + /* SADB_X_EXT_KMADDRESS is not present in unpatched kernels < 2.6.28 */ + if (response.x_kmaddress) + { + sockaddr_t *local_addr, *remote_addr; + u_int32_t local_len; + + local_addr = (sockaddr_t*)&response.x_kmaddress[1]; + local = host_create_from_sockaddr(local_addr); + local_len = (local_addr->sa_family == AF_INET6)? + sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in); + remote_addr = (sockaddr_t*)((u_int8_t*)local_addr + local_len); + remote = host_create_from_sockaddr(remote_addr); + DBG2(DBG_KNL, " kmaddress: %H...%H", local, remote); + } + + if (src_ts && dst_ts && local && remote) + { + DBG1(DBG_KNL, "creating migrate job for policy %R === %R %N with reqid {%u}", + src_ts, dst_ts, policy_dir_names, dir, reqid, local); + job = (job_t*)migrate_job_create(reqid, src_ts, dst_ts, dir, + local, remote); + charon->processor->queue_job(charon->processor, job); + } + else + { + DESTROY_IF(src_ts); + DESTROY_IF(dst_ts); + DESTROY_IF(local); + DESTROY_IF(remote); + } +} +#endif /*SADB_X_MIGRATE*/ + +#ifdef HAVE_NATT +/** + * Process a SADB_X_NAT_T_NEW_MAPPING message from the kernel + */ +static void process_mapping(private_kernel_pfkey_ipsec_t *this, struct sadb_msg* msg) +{ + pfkey_msg_t response; + u_int32_t spi, reqid; + host_t *host; + job_t *job; + + DBG2(DBG_KNL, "received an SADB_X_NAT_T_NEW_MAPPING"); + + if (parse_pfkey_message(msg, &response) != SUCCESS) + { + DBG1(DBG_KNL, "parsing SADB_X_NAT_T_NEW_MAPPING from kernel failed"); + return; + } + + if (!response.x_sa2) + { + DBG1(DBG_KNL, "received SADB_X_NAT_T_NEW_MAPPING is missing required information"); + return; + } + + spi = response.sa->sadb_sa_spi; + reqid = response.x_sa2->sadb_x_sa2_reqid; + + if (proto_satype2ike(msg->sadb_msg_satype) == PROTO_ESP) + { + sockaddr_t *sa = (sockaddr_t*)(response.dst + 1); + switch (sa->sa_family) + { + case AF_INET: + { + struct sockaddr_in *sin = (struct sockaddr_in*)sa; + sin->sin_port = htons(response.x_natt_dport->sadb_x_nat_t_port_port); + } + case AF_INET6: + { + struct sockaddr_in6 *sin6 = (struct sockaddr_in6*)sa; + sin6->sin6_port = htons(response.x_natt_dport->sadb_x_nat_t_port_port); + } + default: + break; + } + host = host_create_from_sockaddr(sa); + if (host) + { + DBG1(DBG_KNL, "NAT mappings of ESP CHILD_SA with SPI %.8x and " + "reqid {%u} changed, queuing update job", ntohl(spi), reqid); + job = (job_t*)update_sa_job_create(reqid, host); + charon->processor->queue_job(charon->processor, job); + } + } +} +#endif /*HAVE_NATT*/ + +/** + * Receives events from kernel + */ +static job_requeue_t receive_events(private_kernel_pfkey_ipsec_t *this) +{ + unsigned char buf[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg = (struct sadb_msg*)buf; + int len; + bool oldstate; + + oldstate = thread_cancelability(TRUE); + len = recvfrom(this->socket_events, buf, sizeof(buf), 0, NULL, 0); + thread_cancelability(oldstate); + + if (len < 0) + { + switch (errno) + { + case EINTR: + /* interrupted, try again */ + return JOB_REQUEUE_DIRECT; + case EAGAIN: + /* no data ready, select again */ + return JOB_REQUEUE_DIRECT; + default: + DBG1(DBG_KNL, "unable to receive from PF_KEY event socket"); + sleep(1); + return JOB_REQUEUE_FAIR; + } + } + + if (len < sizeof(struct sadb_msg) || + msg->sadb_msg_len < PFKEY_LEN(sizeof(struct sadb_msg))) + { + DBG2(DBG_KNL, "received corrupted PF_KEY message"); + return JOB_REQUEUE_DIRECT; + } + if (msg->sadb_msg_pid != 0) + { /* not from kernel. not interested, try another one */ + return JOB_REQUEUE_DIRECT; + } + if (msg->sadb_msg_len > len / PFKEY_ALIGNMENT) + { + DBG1(DBG_KNL, "buffer was too small to receive the complete PF_KEY message"); + return JOB_REQUEUE_DIRECT; + } + + switch (msg->sadb_msg_type) + { + case SADB_ACQUIRE: + process_acquire(this, msg); + break; + case SADB_EXPIRE: + process_expire(this, msg); + break; +#ifdef SADB_X_MIGRATE + case SADB_X_MIGRATE: + process_migrate(this, msg); + break; +#endif /*SADB_X_MIGRATE*/ +#ifdef HAVE_NATT + case SADB_X_NAT_T_NEW_MAPPING: + process_mapping(this, msg); + break; +#endif /*HAVE_NATT*/ + default: + break; + } + + return JOB_REQUEUE_DIRECT; +} + +METHOD(kernel_ipsec_t, get_spi, status_t, + private_kernel_pfkey_ipsec_t *this, host_t *src, host_t *dst, + protocol_id_t protocol, u_int32_t reqid, u_int32_t *spi) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + struct sadb_x_sa2 *sa2; + struct sadb_spirange *range; + pfkey_msg_t response; + u_int32_t received_spi = 0; + size_t len; + + memset(&request, 0, sizeof(request)); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_GETSPI; + msg->sadb_msg_satype = proto_ike2satype(protocol); + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + sa2 = (struct sadb_x_sa2*)PFKEY_EXT_ADD_NEXT(msg); + sa2->sadb_x_sa2_exttype = SADB_X_EXT_SA2; + sa2->sadb_x_sa2_len = PFKEY_LEN(sizeof(struct sadb_spirange)); + sa2->sadb_x_sa2_reqid = reqid; + PFKEY_EXT_ADD(msg, sa2); + + add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0); + add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0); + + range = (struct sadb_spirange*)PFKEY_EXT_ADD_NEXT(msg); + range->sadb_spirange_exttype = SADB_EXT_SPIRANGE; + range->sadb_spirange_len = PFKEY_LEN(sizeof(struct sadb_spirange)); + range->sadb_spirange_min = 0xc0000000; + range->sadb_spirange_max = 0xcFFFFFFF; + PFKEY_EXT_ADD(msg, range); + + if (pfkey_send(this, msg, &out, &len) == SUCCESS) + { + if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "allocating SPI failed: %s (%d)", + strerror(out->sadb_msg_errno), out->sadb_msg_errno); + } + else if (parse_pfkey_message(out, &response) == SUCCESS) + { + received_spi = response.sa->sadb_sa_spi; + } + free(out); + } + + if (received_spi == 0) + { + return FAILED; + } + + *spi = received_spi; + return SUCCESS; +} + +METHOD(kernel_ipsec_t, get_cpi, status_t, + private_kernel_pfkey_ipsec_t *this, host_t *src, host_t *dst, + u_int32_t reqid, u_int16_t *cpi) +{ + return FAILED; +} + +METHOD(kernel_ipsec_t, add_sa, status_t, + private_kernel_pfkey_ipsec_t *this, host_t *src, host_t *dst, u_int32_t spi, + protocol_id_t protocol, u_int32_t reqid, lifetime_cfg_t *lifetime, + u_int16_t enc_alg, chunk_t enc_key, u_int16_t int_alg, chunk_t int_key, + ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi, bool encap, + bool inbound, traffic_selector_t *src_ts, traffic_selector_t *dst_ts) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + struct sadb_sa *sa; + struct sadb_x_sa2 *sa2; + struct sadb_lifetime *lft; + struct sadb_key *key; + size_t len; + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "adding SAD entry with SPI %.8x and reqid {%u}", ntohl(spi), reqid); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = inbound ? SADB_UPDATE : SADB_ADD; + msg->sadb_msg_satype = proto_ike2satype(protocol); + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + +#ifdef __APPLE__ + if (encap) + { + struct sadb_sa_2 *sa_2; + sa_2 = (struct sadb_sa_2*)PFKEY_EXT_ADD_NEXT(msg); + sa_2->sadb_sa_natt_port = dst->get_port(dst); + sa = &sa_2->sa; + sa->sadb_sa_flags |= SADB_X_EXT_NATT; + len = sizeof(struct sadb_sa_2); + } + else +#endif + { + sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg); + len = sizeof(struct sadb_sa); + } + sa->sadb_sa_exttype = SADB_EXT_SA; + sa->sadb_sa_len = PFKEY_LEN(len); + sa->sadb_sa_spi = spi; + sa->sadb_sa_replay = (protocol == IPPROTO_COMP) ? 0 : 32; + sa->sadb_sa_auth = lookup_algorithm(integrity_algs, int_alg); + sa->sadb_sa_encrypt = lookup_algorithm(encryption_algs, enc_alg); + PFKEY_EXT_ADD(msg, sa); + + sa2 = (struct sadb_x_sa2*)PFKEY_EXT_ADD_NEXT(msg); + sa2->sadb_x_sa2_exttype = SADB_X_EXT_SA2; + sa2->sadb_x_sa2_len = PFKEY_LEN(sizeof(struct sadb_spirange)); + sa2->sadb_x_sa2_mode = mode2kernel(mode); + sa2->sadb_x_sa2_reqid = reqid; + PFKEY_EXT_ADD(msg, sa2); + + add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0); + add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0); + + lft = (struct sadb_lifetime*)PFKEY_EXT_ADD_NEXT(msg); + lft->sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT; + lft->sadb_lifetime_len = PFKEY_LEN(sizeof(struct sadb_lifetime)); + lft->sadb_lifetime_allocations = lifetime->packets.rekey; + lft->sadb_lifetime_bytes = lifetime->bytes.rekey; + lft->sadb_lifetime_addtime = lifetime->time.rekey; + lft->sadb_lifetime_usetime = 0; /* we only use addtime */ + PFKEY_EXT_ADD(msg, lft); + + lft = (struct sadb_lifetime*)PFKEY_EXT_ADD_NEXT(msg); + lft->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD; + lft->sadb_lifetime_len = PFKEY_LEN(sizeof(struct sadb_lifetime)); + lft->sadb_lifetime_allocations = lifetime->packets.life; + lft->sadb_lifetime_bytes = lifetime->bytes.life; + lft->sadb_lifetime_addtime = lifetime->time.life; + lft->sadb_lifetime_usetime = 0; /* we only use addtime */ + PFKEY_EXT_ADD(msg, lft); + + if (enc_alg != ENCR_UNDEFINED) + { + if (!sa->sadb_sa_encrypt) + { + DBG1(DBG_KNL, "algorithm %N not supported by kernel!", + encryption_algorithm_names, enc_alg); + return FAILED; + } + DBG2(DBG_KNL, " using encryption algorithm %N with key size %d", + encryption_algorithm_names, enc_alg, enc_key.len * 8); + + key = (struct sadb_key*)PFKEY_EXT_ADD_NEXT(msg); + key->sadb_key_exttype = SADB_EXT_KEY_ENCRYPT; + key->sadb_key_bits = enc_key.len * 8; + key->sadb_key_len = PFKEY_LEN(sizeof(struct sadb_key) + enc_key.len); + memcpy(key + 1, enc_key.ptr, enc_key.len); + + PFKEY_EXT_ADD(msg, key); + } + + if (int_alg != AUTH_UNDEFINED) + { + if (!sa->sadb_sa_auth) + { + DBG1(DBG_KNL, "algorithm %N not supported by kernel!", + integrity_algorithm_names, int_alg); + return FAILED; + } + DBG2(DBG_KNL, " using integrity algorithm %N with key size %d", + integrity_algorithm_names, int_alg, int_key.len * 8); + + key = (struct sadb_key*)PFKEY_EXT_ADD_NEXT(msg); + key->sadb_key_exttype = SADB_EXT_KEY_AUTH; + key->sadb_key_bits = int_key.len * 8; + key->sadb_key_len = PFKEY_LEN(sizeof(struct sadb_key) + int_key.len); + memcpy(key + 1, int_key.ptr, int_key.len); + + PFKEY_EXT_ADD(msg, key); + } + + if (ipcomp != IPCOMP_NONE) + { + /*TODO*/ + } + +#ifdef HAVE_NATT + if (encap) + { + add_encap_ext(msg, src, dst); + } +#endif /*HAVE_NATT*/ + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to add SAD entry with SPI %.8x", ntohl(spi)); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to add SAD entry with SPI %.8x: %s (%d)", + ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + + free(out); + return SUCCESS; +} + +METHOD(kernel_ipsec_t, update_sa, status_t, + private_kernel_pfkey_ipsec_t *this, u_int32_t spi, protocol_id_t protocol, + u_int16_t cpi, host_t *src, host_t *dst, host_t *new_src, host_t *new_dst, + bool encap, bool new_encap) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + struct sadb_sa *sa; + pfkey_msg_t response; + size_t len; + + /* we can't update the SA if any of the ip addresses have changed. + * that's because we can't use SADB_UPDATE and by deleting and readding the + * SA the sequence numbers would get lost */ + if (!src->ip_equals(src, new_src) || + !dst->ip_equals(dst, new_dst)) + { + DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x: address changes" + " are not supported", ntohl(spi)); + return NOT_SUPPORTED; + } + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "querying SAD entry with SPI %.8x", ntohl(spi)); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_GET; + msg->sadb_msg_satype = proto_ike2satype(protocol); + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg); + sa->sadb_sa_exttype = SADB_EXT_SA; + sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa)); + sa->sadb_sa_spi = spi; + PFKEY_EXT_ADD(msg, sa); + + /* the kernel wants a SADB_EXT_ADDRESS_SRC to be present even though + * it is not used for anything. */ + add_anyaddr_ext(msg, dst->get_family(dst), SADB_EXT_ADDRESS_SRC); + add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0); + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x", + ntohl(spi)); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x: %s (%d)", + ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + else if (parse_pfkey_message(out, &response) != SUCCESS) + { + DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x: parsing response " + "from kernel failed", ntohl(spi)); + free(out); + return FAILED; + } + + DBG2(DBG_KNL, "updating SAD entry with SPI %.8x from %#H..%#H to %#H..%#H", + ntohl(spi), src, dst, new_src, new_dst); + + memset(&request, 0, sizeof(request)); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_UPDATE; + msg->sadb_msg_satype = proto_ike2satype(protocol); + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + +#ifdef __APPLE__ + { + struct sadb_sa_2 *sa_2; + sa_2 = (struct sadb_sa_2*)PFKEY_EXT_ADD_NEXT(msg); + sa_2->sa.sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa_2)); + memcpy(&sa_2->sa, response.sa, sizeof(struct sadb_sa)); + if (encap) + { + sa_2->sadb_sa_natt_port = new_dst->get_port(new_dst); + sa_2->sa.sadb_sa_flags |= SADB_X_EXT_NATT; + } + } +#else + PFKEY_EXT_COPY(msg, response.sa); +#endif + PFKEY_EXT_COPY(msg, response.x_sa2); + + PFKEY_EXT_COPY(msg, response.src); + PFKEY_EXT_COPY(msg, response.dst); + + PFKEY_EXT_COPY(msg, response.lft_soft); + PFKEY_EXT_COPY(msg, response.lft_hard); + + if (response.key_encr) + { + PFKEY_EXT_COPY(msg, response.key_encr); + } + + if (response.key_auth) + { + PFKEY_EXT_COPY(msg, response.key_auth); + } + +#ifdef HAVE_NATT + if (new_encap) + { + add_encap_ext(msg, new_src, new_dst); + } +#endif /*HAVE_NATT*/ + + free(out); + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x", ntohl(spi)); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to update SAD entry with SPI %.8x: %s (%d)", + ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + free(out); + + return SUCCESS; +} + +METHOD(kernel_ipsec_t, query_sa, status_t, + private_kernel_pfkey_ipsec_t *this, host_t *src, host_t *dst, + u_int32_t spi, protocol_id_t protocol, u_int64_t *bytes) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + struct sadb_sa *sa; + pfkey_msg_t response; + size_t len; + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "querying SAD entry with SPI %.8x", ntohl(spi)); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_GET; + msg->sadb_msg_satype = proto_ike2satype(protocol); + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg); + sa->sadb_sa_exttype = SADB_EXT_SA; + sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa)); + sa->sadb_sa_spi = spi; + PFKEY_EXT_ADD(msg, sa); + + /* the Linux Kernel doesn't care for the src address, but other systems do + * (e.g. FreeBSD) + */ + add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0); + add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0); + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x", ntohl(spi)); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x: %s (%d)", + ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + else if (parse_pfkey_message(out, &response) != SUCCESS) + { + DBG1(DBG_KNL, "unable to query SAD entry with SPI %.8x", ntohl(spi)); + free(out); + return FAILED; + } + *bytes = response.lft_current->sadb_lifetime_bytes; + + free(out); + return SUCCESS; +} + +METHOD(kernel_ipsec_t, del_sa, status_t, + private_kernel_pfkey_ipsec_t *this, host_t *src, host_t *dst, + u_int32_t spi, protocol_id_t protocol, u_int16_t cpi) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + struct sadb_sa *sa; + size_t len; + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "deleting SAD entry with SPI %.8x", ntohl(spi)); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_DELETE; + msg->sadb_msg_satype = proto_ike2satype(protocol); + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + sa = (struct sadb_sa*)PFKEY_EXT_ADD_NEXT(msg); + sa->sadb_sa_exttype = SADB_EXT_SA; + sa->sadb_sa_len = PFKEY_LEN(sizeof(struct sadb_sa)); + sa->sadb_sa_spi = spi; + PFKEY_EXT_ADD(msg, sa); + + /* the Linux Kernel doesn't care for the src address, but other systems do + * (e.g. FreeBSD) + */ + add_addr_ext(msg, src, SADB_EXT_ADDRESS_SRC, 0, 0); + add_addr_ext(msg, dst, SADB_EXT_ADDRESS_DST, 0, 0); + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to delete SAD entry with SPI %.8x", ntohl(spi)); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to delete SAD entry with SPI %.8x: %s (%d)", + ntohl(spi), strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + + DBG2(DBG_KNL, "deleted SAD entry with SPI %.8x", ntohl(spi)); + free(out); + return SUCCESS; +} + +METHOD(kernel_ipsec_t, add_policy, status_t, + private_kernel_pfkey_ipsec_t *this, host_t *src, host_t *dst, + traffic_selector_t *src_ts, traffic_selector_t *dst_ts, + policy_dir_t direction, u_int32_t spi, protocol_id_t protocol, + u_int32_t reqid, ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi, + bool routed) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + struct sadb_x_policy *pol; + struct sadb_x_ipsecrequest *req; + policy_entry_t *policy, *found = NULL; + pfkey_msg_t response; + size_t len; + + if (dir2kernel(direction) == IPSEC_DIR_INVALID) + { + /* FWD policies are not supported on all platforms */ + return SUCCESS; + } + + /* create a policy */ + policy = create_policy_entry(src_ts, dst_ts, direction, reqid); + + /* find a matching policy */ + this->mutex->lock(this->mutex); + if (this->policies->find_first(this->policies, + (linked_list_match_t)policy_entry_equals, (void**)&found, policy) == SUCCESS) + { + /* use existing policy */ + found->refcount++; + DBG2(DBG_KNL, "policy %R === %R %N already exists, increasing " + "refcount", src_ts, dst_ts, + policy_dir_names, direction); + policy_entry_destroy(policy); + policy = found; + } + else + { + /* apply the new one, if we have no such policy */ + this->policies->insert_last(this->policies, policy); + policy->refcount = 1; + } + + memset(&request, 0, sizeof(request)); + + DBG2(DBG_KNL, "adding policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = found ? SADB_X_SPDUPDATE : SADB_X_SPDADD; + msg->sadb_msg_satype = 0; + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + pol = (struct sadb_x_policy*)PFKEY_EXT_ADD_NEXT(msg); + pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY; + pol->sadb_x_policy_len = PFKEY_LEN(sizeof(struct sadb_x_policy)); + pol->sadb_x_policy_id = 0; + pol->sadb_x_policy_dir = dir2kernel(direction); + pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC; +#ifdef HAVE_STRUCT_SADB_X_POLICY_SADB_X_POLICY_PRIORITY + /* calculate priority based on source selector size, small size = high prio */ + pol->sadb_x_policy_priority = routed ? PRIO_LOW : PRIO_HIGH; + pol->sadb_x_policy_priority -= policy->src.mask * 10; + pol->sadb_x_policy_priority -= policy->src.proto != IPSEC_PROTO_ANY ? 2 : 0; + pol->sadb_x_policy_priority -= policy->src.net->get_port(policy->src.net) ? 1 : 0; +#endif + + /* one or more sadb_x_ipsecrequest extensions are added to the sadb_x_policy extension */ + req = (struct sadb_x_ipsecrequest*)(pol + 1); + req->sadb_x_ipsecrequest_proto = proto_ike2ip(protocol); + /* !!! the length of this struct MUST be in octets instead of 64 bit words */ + req->sadb_x_ipsecrequest_len = sizeof(struct sadb_x_ipsecrequest); + req->sadb_x_ipsecrequest_mode = mode2kernel(mode); + req->sadb_x_ipsecrequest_reqid = reqid; + req->sadb_x_ipsecrequest_level = IPSEC_LEVEL_UNIQUE; + if (mode == MODE_TUNNEL) + { + sockaddr_t *sa; + socklen_t sl; + sa = src->get_sockaddr(src); + sl = *src->get_sockaddr_len(src); + memcpy(req + 1, sa, sl); + sa = dst->get_sockaddr(dst); + memcpy((u_int8_t*)(req + 1) + sl, sa, sl); + req->sadb_x_ipsecrequest_len += sl * 2; + } + + pol->sadb_x_policy_len += PFKEY_LEN(req->sadb_x_ipsecrequest_len); + PFKEY_EXT_ADD(msg, pol); + + add_addr_ext(msg, policy->src.net, SADB_EXT_ADDRESS_SRC, policy->src.proto, + policy->src.mask); + add_addr_ext(msg, policy->dst.net, SADB_EXT_ADDRESS_DST, policy->dst.proto, + policy->dst.mask); + +#ifdef __FreeBSD__ + { /* on FreeBSD a lifetime has to be defined to be able to later query + * the current use time. */ + struct sadb_lifetime *lft; + lft = (struct sadb_lifetime*)PFKEY_EXT_ADD_NEXT(msg); + lft->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD; + lft->sadb_lifetime_len = PFKEY_LEN(sizeof(struct sadb_lifetime)); + lft->sadb_lifetime_addtime = LONG_MAX; + PFKEY_EXT_ADD(msg, lft); + } +#endif + + this->mutex->unlock(this->mutex); + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to add policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to add policy %R === %R %N: %s (%d)", src_ts, dst_ts, + policy_dir_names, direction, + strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + else if (parse_pfkey_message(out, &response) != SUCCESS) + { + DBG1(DBG_KNL, "unable to add policy %R === %R %N: parsing response " + "from kernel failed", src_ts, dst_ts, policy_dir_names, direction); + free(out); + return FAILED; + } + + this->mutex->lock(this->mutex); + + /* we try to find the policy again and update the kernel index */ + if (this->policies->find_last(this->policies, NULL, (void**)&policy) != SUCCESS) + { + DBG2(DBG_KNL, "unable to update index, the policy %R === %R %N is " + "already gone, ignoring", src_ts, dst_ts, policy_dir_names, direction); + this->mutex->unlock(this->mutex); + free(out); + return SUCCESS; + } + policy->index = response.x_policy->sadb_x_policy_id; + free(out); + + /* install a route, if: + * - we are NOT updating a policy + * - this is a forward policy (to just get one for each child) + * - we are in tunnel mode + * - we are not using IPv6 (does not work correctly yet!) + * - routing is not disabled via strongswan.conf + */ + if (policy->route == NULL && direction == POLICY_FWD && + mode != MODE_TRANSPORT && src->get_family(src) != AF_INET6 && + this->install_routes) + { + route_entry_t *route = malloc_thing(route_entry_t); + + if (charon->kernel_interface->get_address_by_ts(charon->kernel_interface, + dst_ts, &route->src_ip) == SUCCESS) + { + /* get the nexthop to src (src as we are in POLICY_FWD).*/ + route->gateway = charon->kernel_interface->get_nexthop( + charon->kernel_interface, src); + route->if_name = charon->kernel_interface->get_interface( + charon->kernel_interface, dst); + route->dst_net = chunk_clone(policy->src.net->get_address(policy->src.net)); + route->prefixlen = policy->src.mask; + + switch (charon->kernel_interface->add_route(charon->kernel_interface, + route->dst_net, route->prefixlen, route->gateway, + route->src_ip, route->if_name)) + { + default: + DBG1(DBG_KNL, "unable to install source route for %H", + route->src_ip); + /* FALL */ + case ALREADY_DONE: + /* route exists, do not uninstall */ + route_entry_destroy(route); + break; + case SUCCESS: + /* cache the installed route */ + policy->route = route; + break; + } + } + else + { + free(route); + } + } + + this->mutex->unlock(this->mutex); + + return SUCCESS; +} + +METHOD(kernel_ipsec_t, query_policy, status_t, + private_kernel_pfkey_ipsec_t *this, traffic_selector_t *src_ts, + traffic_selector_t *dst_ts, policy_dir_t direction, u_int32_t *use_time) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + struct sadb_x_policy *pol; + policy_entry_t *policy, *found = NULL; + pfkey_msg_t response; + size_t len; + + if (dir2kernel(direction) == IPSEC_DIR_INVALID) + { + /* FWD policies are not supported on all platforms */ + return NOT_FOUND; + } + + DBG2(DBG_KNL, "querying policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + + /* create a policy */ + policy = create_policy_entry(src_ts, dst_ts, direction, 0); + + /* find a matching policy */ + this->mutex->lock(this->mutex); + if (this->policies->find_first(this->policies, + (linked_list_match_t)policy_entry_equals, (void**)&found, policy) != SUCCESS) + { + DBG1(DBG_KNL, "querying policy %R === %R %N failed, not found", src_ts, + dst_ts, policy_dir_names, direction); + policy_entry_destroy(policy); + this->mutex->unlock(this->mutex); + return NOT_FOUND; + } + policy_entry_destroy(policy); + policy = found; + + memset(&request, 0, sizeof(request)); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_X_SPDGET; + msg->sadb_msg_satype = 0; + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + pol = (struct sadb_x_policy*)PFKEY_EXT_ADD_NEXT(msg); + pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY; + pol->sadb_x_policy_id = policy->index; + pol->sadb_x_policy_len = PFKEY_LEN(sizeof(struct sadb_x_policy)); + pol->sadb_x_policy_dir = dir2kernel(direction); + pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC; + PFKEY_EXT_ADD(msg, pol); + + add_addr_ext(msg, policy->src.net, SADB_EXT_ADDRESS_SRC, policy->src.proto, + policy->src.mask); + add_addr_ext(msg, policy->dst.net, SADB_EXT_ADDRESS_DST, policy->dst.proto, + policy->dst.mask); + + this->mutex->unlock(this->mutex); + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to query policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to query policy %R === %R %N: %s (%d)", src_ts, + dst_ts, policy_dir_names, direction, + strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + else if (parse_pfkey_message(out, &response) != SUCCESS) + { + DBG1(DBG_KNL, "unable to query policy %R === %R %N: parsing response " + "from kernel failed", src_ts, dst_ts, policy_dir_names, direction); + free(out); + return FAILED; + } + else if (response.lft_current == NULL) + { + DBG1(DBG_KNL, "unable to query policy %R === %R %N: kernel reports no " + "use time", src_ts, dst_ts, policy_dir_names, direction); + free(out); + return FAILED; + } + /* we need the monotonic time, but the kernel returns system time. */ + if (response.lft_current->sadb_lifetime_usetime) + { + *use_time = time_monotonic(NULL) - + (time(NULL) - response.lft_current->sadb_lifetime_usetime); + } + else + { + *use_time = 0; + } + free(out); + + return SUCCESS; +} + +METHOD(kernel_ipsec_t, del_policy, status_t, + private_kernel_pfkey_ipsec_t *this, traffic_selector_t *src_ts, + traffic_selector_t *dst_ts, policy_dir_t direction, bool unrouted) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + struct sadb_x_policy *pol; + policy_entry_t *policy, *found = NULL; + route_entry_t *route; + size_t len; + + if (dir2kernel(direction) == IPSEC_DIR_INVALID) + { + /* FWD policies are not supported on all platforms */ + return SUCCESS; + } + + DBG2(DBG_KNL, "deleting policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + + /* create a policy */ + policy = create_policy_entry(src_ts, dst_ts, direction, 0); + + /* find a matching policy */ + this->mutex->lock(this->mutex); + if (this->policies->find_first(this->policies, + (linked_list_match_t)policy_entry_equals, (void**)&found, policy) == SUCCESS) + { + if (--found->refcount > 0) + { + /* is used by more SAs, keep in kernel */ + DBG2(DBG_KNL, "policy still used by another CHILD_SA, not removed"); + policy_entry_destroy(policy); + this->mutex->unlock(this->mutex); + return SUCCESS; + } + /* remove if last reference */ + this->policies->remove(this->policies, found, NULL); + policy_entry_destroy(policy); + policy = found; + } + else + { + DBG1(DBG_KNL, "deleting policy %R === %R %N failed, not found", src_ts, + dst_ts, policy_dir_names, direction); + policy_entry_destroy(policy); + this->mutex->unlock(this->mutex); + return NOT_FOUND; + } + this->mutex->unlock(this->mutex); + + memset(&request, 0, sizeof(request)); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_X_SPDDELETE; + msg->sadb_msg_satype = 0; + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + pol = (struct sadb_x_policy*)PFKEY_EXT_ADD_NEXT(msg); + pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY; + pol->sadb_x_policy_len = PFKEY_LEN(sizeof(struct sadb_x_policy)); + pol->sadb_x_policy_dir = dir2kernel(direction); + pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC; + PFKEY_EXT_ADD(msg, pol); + + add_addr_ext(msg, policy->src.net, SADB_EXT_ADDRESS_SRC, policy->src.proto, + policy->src.mask); + add_addr_ext(msg, policy->dst.net, SADB_EXT_ADDRESS_DST, policy->dst.proto, + policy->dst.mask); + + route = policy->route; + policy->route = NULL; + policy_entry_destroy(policy); + + if (pfkey_send(this, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to delete policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to delete policy %R === %R %N: %s (%d)", src_ts, + dst_ts, policy_dir_names, direction, + strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + free(out); + + if (route) + { + if (charon->kernel_interface->del_route(charon->kernel_interface, + route->dst_net, route->prefixlen, route->gateway, + route->src_ip, route->if_name) != SUCCESS) + { + DBG1(DBG_KNL, "error uninstalling route installed with " + "policy %R === %R %N", src_ts, dst_ts, + policy_dir_names, direction); + } + route_entry_destroy(route); + } + + return SUCCESS; +} + +/** + * Register a socket for AQUIRE/EXPIRE messages + */ +static status_t register_pfkey_socket(private_kernel_pfkey_ipsec_t *this, + u_int8_t satype) +{ + unsigned char request[PFKEY_BUFFER_SIZE]; + struct sadb_msg *msg, *out; + size_t len; + + memset(&request, 0, sizeof(request)); + + msg = (struct sadb_msg*)request; + msg->sadb_msg_version = PF_KEY_V2; + msg->sadb_msg_type = SADB_REGISTER; + msg->sadb_msg_satype = satype; + msg->sadb_msg_len = PFKEY_LEN(sizeof(struct sadb_msg)); + + if (pfkey_send_socket(this, this->socket_events, msg, &out, &len) != SUCCESS) + { + DBG1(DBG_KNL, "unable to register PF_KEY socket"); + return FAILED; + } + else if (out->sadb_msg_errno) + { + DBG1(DBG_KNL, "unable to register PF_KEY socket: %s (%d)", + strerror(out->sadb_msg_errno), out->sadb_msg_errno); + free(out); + return FAILED; + } + free(out); + return SUCCESS; +} + +METHOD(kernel_ipsec_t, bypass_socket, bool, + private_kernel_pfkey_ipsec_t *this, int fd, int family) +{ + struct sadb_x_policy policy; + u_int sol, ipsec_policy; + + switch (family) + { + case AF_INET: + { + sol = SOL_IP; + ipsec_policy = IP_IPSEC_POLICY; + break; + } + case AF_INET6: + { + sol = SOL_IPV6; + ipsec_policy = IPV6_IPSEC_POLICY; + break; + } + default: + return FALSE; + } + + memset(&policy, 0, sizeof(policy)); + policy.sadb_x_policy_len = sizeof(policy) / sizeof(u_int64_t); + policy.sadb_x_policy_exttype = SADB_X_EXT_POLICY; + policy.sadb_x_policy_type = IPSEC_POLICY_BYPASS; + + policy.sadb_x_policy_dir = IPSEC_DIR_OUTBOUND; + if (setsockopt(fd, sol, ipsec_policy, &policy, sizeof(policy)) < 0) + { + DBG1(DBG_KNL, "unable to set IPSEC_POLICY on socket: %s", + strerror(errno)); + return FALSE; + } + policy.sadb_x_policy_dir = IPSEC_DIR_INBOUND; + if (setsockopt(fd, sol, ipsec_policy, &policy, sizeof(policy)) < 0) + { + DBG1(DBG_KNL, "unable to set IPSEC_POLICY on socket: %s", + strerror(errno)); + return FALSE; + } + return TRUE; +} + +METHOD(kernel_ipsec_t, destroy, void, + private_kernel_pfkey_ipsec_t *this) +{ + if (this->job) + { + this->job->cancel(this->job); + } + if (this->socket > 0) + { + close(this->socket); + } + if (this->socket_events > 0) + { + close(this->socket_events); + } + this->policies->destroy_function(this->policies, (void*)policy_entry_destroy); + this->mutex->destroy(this->mutex); + this->mutex_pfkey->destroy(this->mutex_pfkey); + free(this); +} + +/* + * Described in header. + */ +kernel_pfkey_ipsec_t *kernel_pfkey_ipsec_create() +{ + private_kernel_pfkey_ipsec_t *this; + + INIT(this, + .public.interface = { + .get_spi = _get_spi, + .get_cpi = _get_cpi, + .add_sa = _add_sa, + .update_sa = _update_sa, + .query_sa = _query_sa, + .del_sa = _del_sa, + .add_policy = _add_policy, + .query_policy = _query_policy, + .del_policy = _del_policy, + .bypass_socket = _bypass_socket, + .destroy = _destroy, + }, + .policies = linked_list_create(), + .mutex = mutex_create(MUTEX_TYPE_DEFAULT), + .mutex_pfkey = mutex_create(MUTEX_TYPE_DEFAULT), + .install_routes = lib->settings->get_bool(lib->settings, + "charon.install_routes", TRUE), + ); + + /* create a PF_KEY socket to communicate with the kernel */ + this->socket = socket(PF_KEY, SOCK_RAW, PF_KEY_V2); + if (this->socket <= 0) + { + DBG1(DBG_KNL, "unable to create PF_KEY socket"); + destroy(this); + return NULL; + } + + /* create a PF_KEY socket for ACQUIRE & EXPIRE */ + this->socket_events = socket(PF_KEY, SOCK_RAW, PF_KEY_V2); + if (this->socket_events <= 0) + { + DBG1(DBG_KNL, "unable to create PF_KEY event socket"); + destroy(this); + return NULL; + } + + /* register the event socket */ + if (register_pfkey_socket(this, SADB_SATYPE_ESP) != SUCCESS || + register_pfkey_socket(this, SADB_SATYPE_AH) != SUCCESS) + { + DBG1(DBG_KNL, "unable to register PF_KEY event socket"); + destroy(this); + return NULL; + } + + this->job = callback_job_create((callback_job_cb_t)receive_events, + this, NULL, NULL); + charon->processor->queue_job(charon->processor, (job_t*)this->job); + + return &this->public; +} + diff --git a/src/libcharon/plugins/kernel_pfkey/kernel_pfkey_ipsec.h b/src/libcharon/plugins/kernel_pfkey/kernel_pfkey_ipsec.h new file mode 100644 index 000000000..649f93733 --- /dev/null +++ b/src/libcharon/plugins/kernel_pfkey/kernel_pfkey_ipsec.h @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup kernel_pfkey_ipsec_i kernel_pfkey_ipsec + * @{ @ingroup kernel_pfkey + */ + +#ifndef KERNEL_PFKEY_IPSEC_H_ +#define KERNEL_PFKEY_IPSEC_H_ + +#include <kernel/kernel_ipsec.h> + +typedef struct kernel_pfkey_ipsec_t kernel_pfkey_ipsec_t; + +/** + * Implementation of the kernel ipsec interface using PF_KEY. + */ +struct kernel_pfkey_ipsec_t { + + /** + * Implements kernel_ipsec_t interface + */ + kernel_ipsec_t interface; +}; + +/** + * Create a PF_KEY kernel ipsec interface instance. + * + * @return kernel_pfkey_ipsec_t instance + */ +kernel_pfkey_ipsec_t *kernel_pfkey_ipsec_create(); + +#endif /** KERNEL_PFKEY_IPSEC_H_ @}*/ diff --git a/src/libcharon/plugins/kernel_pfkey/kernel_pfkey_plugin.c b/src/libcharon/plugins/kernel_pfkey/kernel_pfkey_plugin.c new file mode 100644 index 000000000..b84ccf150 --- /dev/null +++ b/src/libcharon/plugins/kernel_pfkey/kernel_pfkey_plugin.c @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + + +#include "kernel_pfkey_plugin.h" + +#include "kernel_pfkey_ipsec.h" + +#include <daemon.h> + +typedef struct private_kernel_pfkey_plugin_t private_kernel_pfkey_plugin_t; + +/** + * private data of kernel PF_KEY plugin + */ +struct private_kernel_pfkey_plugin_t { + /** + * implements plugin interface + */ + kernel_pfkey_plugin_t public; +}; + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(private_kernel_pfkey_plugin_t *this) +{ + charon->kernel_interface->remove_ipsec_interface(charon->kernel_interface, (kernel_ipsec_constructor_t)kernel_pfkey_ipsec_create); + free(this); +} + +/* + * see header file + */ +plugin_t *kernel_pfkey_plugin_create() +{ + private_kernel_pfkey_plugin_t *this = malloc_thing(private_kernel_pfkey_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + charon->kernel_interface->add_ipsec_interface(charon->kernel_interface, (kernel_ipsec_constructor_t)kernel_pfkey_ipsec_create); + + return &this->public.plugin; +} diff --git a/src/libcharon/plugins/kernel_pfkey/kernel_pfkey_plugin.h b/src/libcharon/plugins/kernel_pfkey/kernel_pfkey_plugin.h new file mode 100644 index 000000000..ecccc6303 --- /dev/null +++ b/src/libcharon/plugins/kernel_pfkey/kernel_pfkey_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup kernel_pfkey kernel_pfkey + * @ingroup cplugins + * + * @defgroup kernel_pfkey_plugin kernel_pfkey_plugin + * @{ @ingroup kernel_pfkey + */ + +#ifndef KERNEL_PFKEY_PLUGIN_H_ +#define KERNEL_PFKEY_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct kernel_pfkey_plugin_t kernel_pfkey_plugin_t; + +/** + * PF_KEY kernel interface plugin + */ +struct kernel_pfkey_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** KERNEL_PFKEY_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/kernel_pfroute/Makefile.am b/src/libcharon/plugins/kernel_pfroute/Makefile.am new file mode 100644 index 000000000..83db48160 --- /dev/null +++ b/src/libcharon/plugins/kernel_pfroute/Makefile.am @@ -0,0 +1,17 @@ + +INCLUDES = -I${linux_headers} -I$(top_srcdir)/src/libstrongswan \ + -I$(top_srcdir)/src/libhydra -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-kernel-pfroute.la +else +plugin_LTLIBRARIES = libstrongswan-kernel-pfroute.la +endif + +libstrongswan_kernel_pfroute_la_SOURCES = \ + kernel_pfroute_plugin.h kernel_pfroute_plugin.c \ + kernel_pfroute_net.h kernel_pfroute_net.c + +libstrongswan_kernel_pfroute_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/kernel_pfroute/Makefile.in b/src/libcharon/plugins/kernel_pfroute/Makefile.in new file mode 100644 index 000000000..3a4d2c3b5 --- /dev/null +++ b/src/libcharon/plugins/kernel_pfroute/Makefile.in @@ -0,0 +1,590 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src/libcharon/plugins/kernel_pfroute +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 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(for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/kernel_pfroute/kernel_pfroute_net.c b/src/libcharon/plugins/kernel_pfroute/kernel_pfroute_net.c new file mode 100644 index 000000000..97c019b58 --- /dev/null +++ b/src/libcharon/plugins/kernel_pfroute/kernel_pfroute_net.c @@ -0,0 +1,729 @@ +/* + * Copyright (C) 2009 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <sys/types.h> +#include <sys/socket.h> +#include <net/if.h> +#include <ifaddrs.h> +#include <net/route.h> +#include <unistd.h> +#include <errno.h> + +#include "kernel_pfroute_net.h" + +#include <daemon.h> +#include <utils/host.h> +#include <threading/thread.h> +#include <threading/mutex.h> +#include <utils/linked_list.h> +#include <processing/jobs/callback_job.h> +#include <processing/jobs/roam_job.h> + +#ifndef HAVE_STRUCT_SOCKADDR_SA_LEN +#error Cannot compile this plugin on systems where 'struct sockaddr' has no sa_len member. +#endif + +/** delay before firing roam jobs (ms) */ +#define ROAM_DELAY 100 + +/** buffer size for PF_ROUTE messages */ +#define PFROUTE_BUFFER_SIZE 4096 + +typedef struct addr_entry_t addr_entry_t; + +/** + * IP address in an inface_entry_t + */ +struct addr_entry_t { + + /** The ip address */ + host_t *ip; + + /** virtual IP managed by us */ + bool virtual; + + /** Number of times this IP is used, if virtual */ + u_int refcount; +}; + +/** + * destroy a addr_entry_t object + */ +static void addr_entry_destroy(addr_entry_t *this) +{ + this->ip->destroy(this->ip); + free(this); +} + +typedef struct iface_entry_t iface_entry_t; + +/** + * A network interface on this system, containing addr_entry_t's + */ +struct iface_entry_t { + + /** interface index */ + int ifindex; + + /** name of the interface */ + char ifname[IFNAMSIZ]; + + /** interface flags, as in netdevice(7) SIOCGIFFLAGS */ + u_int flags; + + /** list of addresses as host_t */ + linked_list_t *addrs; +}; + +/** + * destroy an interface entry + */ +static void iface_entry_destroy(iface_entry_t *this) +{ + this->addrs->destroy_function(this->addrs, (void*)addr_entry_destroy); + free(this); +} + + +typedef struct private_kernel_pfroute_net_t private_kernel_pfroute_net_t; + +/** + * Private variables and functions of kernel_pfroute class. + */ +struct private_kernel_pfroute_net_t +{ + /** + * Public part of the kernel_pfroute_t object. + */ + kernel_pfroute_net_t public; + + /** + * mutex to lock access to various lists + */ + mutex_t *mutex; + + /** + * Cached list of interfaces and their addresses (iface_entry_t) + */ + linked_list_t *ifaces; + + /** + * job receiving PF_ROUTE events + */ + callback_job_t *job; + + /** + * mutex to lock access to the PF_ROUTE socket + */ + mutex_t *mutex_pfroute; + + /** + * PF_ROUTE socket to communicate with the kernel + */ + int socket; + + /** + * PF_ROUTE socket to receive events + */ + int socket_events; + + /** + * sequence number for messages sent to the kernel + */ + int seq; + + /** + * time of last roam job + */ + timeval_t last_roam; +}; + +/** + * Start a roaming job. We delay it a bit and fire only one job + * for multiple events. Otherwise we would create too many jobs. + */ +static void fire_roam_job(private_kernel_pfroute_net_t *this, bool address) +{ + timeval_t now; + + time_monotonic(&now); + if (timercmp(&now, &this->last_roam, >)) + { + now.tv_usec += ROAM_DELAY * 1000; + while (now.tv_usec > 1000000) + { + now.tv_sec++; + now.tv_usec -= 1000000; + } + this->last_roam = now; + charon->scheduler->schedule_job_ms(charon->scheduler, + (job_t*)roam_job_create(address), ROAM_DELAY); + } +} + +/** + * Process an RTM_*ADDR message from the kernel + */ +static void process_addr(private_kernel_pfroute_net_t *this, + struct rt_msghdr *msg) +{ + struct ifa_msghdr *ifa = (struct ifa_msghdr*)msg; + sockaddr_t *sockaddr = (sockaddr_t*)(ifa + 1); + host_t *host = NULL; + enumerator_t *ifaces, *addrs; + iface_entry_t *iface; + addr_entry_t *addr; + bool found = FALSE, changed = FALSE, roam = FALSE; + int i; + + for (i = 1; i < (1 << RTAX_MAX); i <<= 1) + { + if (ifa->ifam_addrs & i) + { + if (RTA_IFA & i) + { + host = host_create_from_sockaddr(sockaddr); + break; + } + sockaddr = (sockaddr_t*)((char*)sockaddr + sockaddr->sa_len); + } + } + + if (!host) + { + return; + } + + this->mutex->lock(this->mutex); + ifaces = this->ifaces->create_enumerator(this->ifaces); + while (ifaces->enumerate(ifaces, &iface)) + { + if (iface->ifindex == ifa->ifam_index) + { + addrs = iface->addrs->create_enumerator(iface->addrs); + while (addrs->enumerate(addrs, &addr)) + { + if (host->ip_equals(host, addr->ip)) + { + found = TRUE; + if (ifa->ifam_type == RTM_DELADDR) + { + iface->addrs->remove_at(iface->addrs, addrs); + if (!addr->virtual) + { + changed = TRUE; + DBG1(DBG_KNL, "%H disappeared from %s", + host, iface->ifname); + } + addr_entry_destroy(addr); + } + else if (ifa->ifam_type == RTM_NEWADDR && addr->virtual) + { + addr->refcount = 1; + } + } + } + addrs->destroy(addrs); + + if (!found && ifa->ifam_type == RTM_NEWADDR) + { + changed = TRUE; + addr = malloc_thing(addr_entry_t); + addr->ip = host->clone(host); + addr->virtual = FALSE; + addr->refcount = 1; + iface->addrs->insert_last(iface->addrs, addr); + DBG1(DBG_KNL, "%H appeared on %s", host, iface->ifname); + } + + if (changed && (iface->flags & IFF_UP)) + { + roam = TRUE; + } + break; + } + } + ifaces->destroy(ifaces); + this->mutex->unlock(this->mutex); + host->destroy(host); + + if (roam) + { + fire_roam_job(this, TRUE); + } +} + +/** + * Process an RTM_IFINFO message from the kernel + */ +static void process_link(private_kernel_pfroute_net_t *this, + struct rt_msghdr *hdr) +{ + struct if_msghdr *msg = (struct if_msghdr*)hdr; + enumerator_t *enumerator; + iface_entry_t *iface; + bool roam = FALSE; + + if (msg->ifm_flags & IFF_LOOPBACK) + { /* ignore loopback interfaces */ + return; + } + + this->mutex->lock(this->mutex); + enumerator = this->ifaces->create_enumerator(this->ifaces); + while (enumerator->enumerate(enumerator, &iface)) + { + if (iface->ifindex == msg->ifm_index) + { + if (!(iface->flags & IFF_UP) && (msg->ifm_flags & IFF_UP)) + { + roam = TRUE; + DBG1(DBG_KNL, "interface %s activated", iface->ifname); + } + else if ((iface->flags & IFF_UP) && !(msg->ifm_flags & IFF_UP)) + { + roam = TRUE; + DBG1(DBG_KNL, "interface %s deactivated", iface->ifname); + } + iface->flags = msg->ifm_flags; + break; + } + } + enumerator->destroy(enumerator); + this->mutex->unlock(this->mutex); + + if (roam) + { + fire_roam_job(this, TRUE); + } +} + +/** + * Process an RTM_*ROUTE message from the kernel + */ +static void process_route(private_kernel_pfroute_net_t *this, + struct rt_msghdr *msg) +{ + +} + +/** + * Receives events from kernel + */ +static job_requeue_t receive_events(private_kernel_pfroute_net_t *this) +{ + unsigned char buf[PFROUTE_BUFFER_SIZE]; + struct rt_msghdr *msg = (struct rt_msghdr*)buf; + int len; + bool oldstate; + + oldstate = thread_cancelability(TRUE); + len = recvfrom(this->socket_events, buf, sizeof(buf), 0, NULL, 0); + thread_cancelability(oldstate); + + if (len < 0) + { + switch (errno) + { + case EINTR: + /* interrupted, try again */ + return JOB_REQUEUE_DIRECT; + case EAGAIN: + /* no data ready, select again */ + return JOB_REQUEUE_DIRECT; + default: + DBG1(DBG_KNL, "unable to receive from PF_ROUTE event socket"); + sleep(1); + return JOB_REQUEUE_FAIR; + } + } + + if (len < sizeof(msg->rtm_msglen) || len < msg->rtm_msglen || + msg->rtm_version != RTM_VERSION) + { + DBG2(DBG_KNL, "received corrupted PF_ROUTE message"); + return JOB_REQUEUE_DIRECT; + } + + switch (msg->rtm_type) + { + case RTM_NEWADDR: + case RTM_DELADDR: + process_addr(this, msg); + break; + case RTM_IFINFO: + /*case RTM_IFANNOUNCE <- what about this*/ + process_link(this, msg); + break; + case RTM_ADD: + case RTM_DELETE: + process_route(this, msg); + default: + break; + } + + return JOB_REQUEUE_DIRECT; +} + + +/** enumerator over addresses */ +typedef struct { + private_kernel_pfroute_net_t* this; + /** whether to enumerate down interfaces */ + bool include_down_ifaces; + /** whether to enumerate virtual ip addresses */ + bool include_virtual_ips; +} address_enumerator_t; + +/** + * cleanup function for address enumerator + */ +static void address_enumerator_destroy(address_enumerator_t *data) +{ + data->this->mutex->unlock(data->this->mutex); + free(data); +} + +/** + * filter for addresses + */ +static bool filter_addresses(address_enumerator_t *data, addr_entry_t** in, host_t** out) +{ + host_t *ip; + if (!data->include_virtual_ips && (*in)->virtual) + { /* skip virtual interfaces added by us */ + return FALSE; + } + ip = (*in)->ip; + if (ip->get_family(ip) == AF_INET6) + { + struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)ip->get_sockaddr(ip); + if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) + { /* skip addresses with a unusable scope */ + return FALSE; + } + } + *out = ip; + return TRUE; +} + +/** + * enumerator constructor for interfaces + */ +static enumerator_t *create_iface_enumerator(iface_entry_t *iface, address_enumerator_t *data) +{ + return enumerator_create_filter(iface->addrs->create_enumerator(iface->addrs), + (void*)filter_addresses, data, NULL); +} + +/** + * filter for interfaces + */ +static bool filter_interfaces(address_enumerator_t *data, iface_entry_t** in, iface_entry_t** out) +{ + if (!data->include_down_ifaces && !((*in)->flags & IFF_UP)) + { /* skip interfaces not up */ + return FALSE; + } + *out = *in; + return TRUE; +} + +/** + * implementation of kernel_net_t.create_address_enumerator + */ +static enumerator_t *create_address_enumerator(private_kernel_pfroute_net_t *this, + bool include_down_ifaces, bool include_virtual_ips) +{ + address_enumerator_t *data = malloc_thing(address_enumerator_t); + data->this = this; + data->include_down_ifaces = include_down_ifaces; + data->include_virtual_ips = include_virtual_ips; + + this->mutex->lock(this->mutex); + return enumerator_create_nested( + enumerator_create_filter(this->ifaces->create_enumerator(this->ifaces), + (void*)filter_interfaces, data, NULL), + (void*)create_iface_enumerator, data, (void*)address_enumerator_destroy); +} + +/** + * implementation of kernel_net_t.get_interface_name + */ +static char *get_interface_name(private_kernel_pfroute_net_t *this, host_t* ip) +{ + enumerator_t *ifaces, *addrs; + iface_entry_t *iface; + addr_entry_t *addr; + char *name = NULL; + + DBG2(DBG_KNL, "getting interface name for %H", ip); + + this->mutex->lock(this->mutex); + ifaces = this->ifaces->create_enumerator(this->ifaces); + while (ifaces->enumerate(ifaces, &iface)) + { + addrs = iface->addrs->create_enumerator(iface->addrs); + while (addrs->enumerate(addrs, &addr)) + { + if (ip->ip_equals(ip, addr->ip)) + { + name = strdup(iface->ifname); + break; + } + } + addrs->destroy(addrs); + if (name) + { + break; + } + } + ifaces->destroy(ifaces); + this->mutex->unlock(this->mutex); + + if (name) + { + DBG2(DBG_KNL, "%H is on interface %s", ip, name); + } + else + { + DBG2(DBG_KNL, "%H is not a local address", ip); + } + return name; +} + +/** + * Implementation of kernel_net_t.get_source_addr. + */ +static host_t* get_source_addr(private_kernel_pfroute_net_t *this, + host_t *dest, host_t *src) +{ + return NULL; +} + +/** + * Implementation of kernel_net_t.get_nexthop. + */ +static host_t* get_nexthop(private_kernel_pfroute_net_t *this, host_t *dest) +{ + return NULL; +} + +/** + * Implementation of kernel_net_t.add_ip. + */ +static status_t add_ip(private_kernel_pfroute_net_t *this, + host_t *virtual_ip, host_t *iface_ip) +{ + return FAILED; +} + +/** + * Implementation of kernel_net_t.del_ip. + */ +static status_t del_ip(private_kernel_pfroute_net_t *this, host_t *virtual_ip) +{ + return FAILED; +} + +/** + * Implementation of kernel_net_t.add_route. + */ +static status_t add_route(private_kernel_pfroute_net_t *this, chunk_t dst_net, + u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name) +{ + return FAILED; +} + +/** + * Implementation of kernel_net_t.del_route. + */ +static status_t del_route(private_kernel_pfroute_net_t *this, chunk_t dst_net, + u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name) +{ + return FAILED; +} + +/** + * Initialize a list of local addresses. + */ +static status_t init_address_list(private_kernel_pfroute_net_t *this) +{ + struct ifaddrs *ifap, *ifa; + iface_entry_t *iface, *current; + addr_entry_t *addr; + enumerator_t *ifaces, *addrs; + + DBG1(DBG_KNL, "listening on interfaces:"); + + if (getifaddrs(&ifap) < 0) + { + DBG1(DBG_KNL, " failed to get interfaces!"); + return FAILED; + } + + for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) + { + if (ifa->ifa_addr == NULL) + { + continue; + } + switch(ifa->ifa_addr->sa_family) + { + case AF_LINK: + case AF_INET: + case AF_INET6: + { + if (ifa->ifa_flags & IFF_LOOPBACK) + { /* ignore loopback interfaces */ + continue; + } + + iface = NULL; + ifaces = this->ifaces->create_enumerator(this->ifaces); + while (ifaces->enumerate(ifaces, ¤t)) + { + if (streq(current->ifname, ifa->ifa_name)) + { + iface = current; + break; + } + } + ifaces->destroy(ifaces); + + if (!iface) + { + iface = malloc_thing(iface_entry_t); + memcpy(iface->ifname, ifa->ifa_name, IFNAMSIZ); + iface->ifindex = if_nametoindex(ifa->ifa_name); + iface->flags = ifa->ifa_flags; + iface->addrs = linked_list_create(); + this->ifaces->insert_last(this->ifaces, iface); + } + + if (ifa->ifa_addr->sa_family != AF_LINK) + { + addr = malloc_thing(addr_entry_t); + addr->ip = host_create_from_sockaddr(ifa->ifa_addr); + addr->virtual = FALSE; + addr->refcount = 1; + iface->addrs->insert_last(iface->addrs, addr); + } + } + } + } + freeifaddrs(ifap); + + ifaces = this->ifaces->create_enumerator(this->ifaces); + while (ifaces->enumerate(ifaces, &iface)) + { + if (iface->flags & IFF_UP) + { + DBG1(DBG_KNL, " %s", iface->ifname); + addrs = iface->addrs->create_enumerator(iface->addrs); + while (addrs->enumerate(addrs, (void**)&addr)) + { + DBG1(DBG_KNL, " %H", addr->ip); + } + addrs->destroy(addrs); + } + } + ifaces->destroy(ifaces); + + return SUCCESS; +} + +/** + * Implementation of kernel_netlink_net_t.destroy. + */ +static void destroy(private_kernel_pfroute_net_t *this) +{ + if (this->job) + { + this->job->cancel(this->job); + } + if (this->socket > 0) + { + close(this->socket); + } + if (this->socket_events) + { + close(this->socket_events); + } + this->ifaces->destroy_function(this->ifaces, (void*)iface_entry_destroy); + this->mutex->destroy(this->mutex); + this->mutex_pfroute->destroy(this->mutex_pfroute); + free(this); +} + +/* + * Described in header. + */ +kernel_pfroute_net_t *kernel_pfroute_net_create() +{ + private_kernel_pfroute_net_t *this = malloc_thing(private_kernel_pfroute_net_t); + + /* public functions */ + this->public.interface.get_interface = (char*(*)(kernel_net_t*,host_t*))get_interface_name; + this->public.interface.create_address_enumerator = (enumerator_t*(*)(kernel_net_t*,bool,bool))create_address_enumerator; + this->public.interface.get_source_addr = (host_t*(*)(kernel_net_t*, host_t *dest, host_t *src))get_source_addr; + this->public.interface.get_nexthop = (host_t*(*)(kernel_net_t*, host_t *dest))get_nexthop; + this->public.interface.add_ip = (status_t(*)(kernel_net_t*,host_t*,host_t*)) add_ip; + this->public.interface.del_ip = (status_t(*)(kernel_net_t*,host_t*)) del_ip; + this->public.interface.add_route = (status_t(*)(kernel_net_t*,chunk_t,u_int8_t,host_t*,host_t*,char*)) add_route; + this->public.interface.del_route = (status_t(*)(kernel_net_t*,chunk_t,u_int8_t,host_t*,host_t*,char*)) del_route; + + this->public.interface.destroy = (void(*)(kernel_net_t*)) destroy; + + /* private members */ + this->ifaces = linked_list_create(); + this->mutex = mutex_create(MUTEX_TYPE_DEFAULT); + this->mutex_pfroute = mutex_create(MUTEX_TYPE_DEFAULT); + + this->seq = 0; + this->socket_events = 0; + this->job = NULL; + + /* create a PF_ROUTE socket to communicate with the kernel */ + this->socket = socket(PF_ROUTE, SOCK_RAW, AF_UNSPEC); + if (this->socket < 0) + { + DBG1(DBG_KNL, "unable to create PF_ROUTE socket"); + destroy(this); + return NULL; + } + + /* create a PF_ROUTE socket to receive events */ + this->socket_events = socket(PF_ROUTE, SOCK_RAW, AF_UNSPEC); + if (this->socket_events < 0) + { + DBG1(DBG_KNL, "unable to create PF_ROUTE event socket"); + destroy(this); + return NULL; + } + + this->job = callback_job_create((callback_job_cb_t)receive_events, + this, NULL, NULL); + charon->processor->queue_job(charon->processor, (job_t*)this->job); + + if (init_address_list(this) != SUCCESS) + { + DBG1(DBG_KNL, "unable to get interface list"); + destroy(this); + return NULL; + } + + return &this->public; +} diff --git a/src/libcharon/plugins/kernel_pfroute/kernel_pfroute_net.h b/src/libcharon/plugins/kernel_pfroute/kernel_pfroute_net.h new file mode 100644 index 000000000..10c3c9eb7 --- /dev/null +++ b/src/libcharon/plugins/kernel_pfroute/kernel_pfroute_net.h @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2009 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup kernel_pfroute_net_i kernel_pfroute_net + * @{ @ingroup kernel_pfroute + */ + +#ifndef KERNEL_PFROUTE_NET_H_ +#define KERNEL_PFROUTE_NET_H_ + +#include <kernel/kernel_net.h> + +typedef struct kernel_pfroute_net_t kernel_pfroute_net_t; + +/** + * Implementation of the kernel net interface using PF_ROUTE. + */ +struct kernel_pfroute_net_t { + + /** + * Implements kernel_net_t interface + */ + kernel_net_t interface; +}; + +/** + * Create a PF_ROUTE kernel net interface instance. + * + * @return kernel_pfroute_net_t instance + */ +kernel_pfroute_net_t *kernel_pfroute_net_create(); + +#endif /** KERNEL_PFROUTE_NET_H_ @}*/ diff --git a/src/libcharon/plugins/kernel_pfroute/kernel_pfroute_plugin.c b/src/libcharon/plugins/kernel_pfroute/kernel_pfroute_plugin.c new file mode 100644 index 000000000..97139fb56 --- /dev/null +++ b/src/libcharon/plugins/kernel_pfroute/kernel_pfroute_plugin.c @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2009 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + + +#include "kernel_pfroute_plugin.h" + +#include "kernel_pfroute_net.h" + +#include <daemon.h> + +typedef struct private_kernel_pfroute_plugin_t private_kernel_pfroute_plugin_t; + +/** + * private data of kernel PF_ROUTE plugin + */ +struct private_kernel_pfroute_plugin_t { + /** + * implements plugin interface + */ + kernel_pfroute_plugin_t public; +}; + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(private_kernel_pfroute_plugin_t *this) +{ + charon->kernel_interface->remove_net_interface(charon->kernel_interface, + (kernel_net_constructor_t)kernel_pfroute_net_create); + free(this); +} + +/* + * see header file + */ +plugin_t *kernel_pfroute_plugin_create() +{ + private_kernel_pfroute_plugin_t *this = malloc_thing(private_kernel_pfroute_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + charon->kernel_interface->add_net_interface(charon->kernel_interface, + (kernel_net_constructor_t)kernel_pfroute_net_create); + + return &this->public.plugin; +} diff --git a/src/libcharon/plugins/kernel_pfroute/kernel_pfroute_plugin.h b/src/libcharon/plugins/kernel_pfroute/kernel_pfroute_plugin.h new file mode 100644 index 000000000..50642a572 --- /dev/null +++ b/src/libcharon/plugins/kernel_pfroute/kernel_pfroute_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2009 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup kernel_pfroute kernel_pfroute + * @ingroup cplugins + * + * @defgroup kernel_pfroute_plugin kernel_pfroute_plugin + * @{ @ingroup kernel_pfroute + */ + +#ifndef KERNEL_PFROUTE_PLUGIN_H_ +#define KERNEL_PFROUTE_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct kernel_pfroute_plugin_t kernel_pfroute_plugin_t; + +/** + * PF_ROUTE kernel interface plugin + */ +struct kernel_pfroute_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** KERNEL_PFROUTE_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/load_tester/Makefile.am b/src/libcharon/plugins/load_tester/Makefile.am new file mode 100644 index 000000000..cdd0445a9 --- /dev/null +++ b/src/libcharon/plugins/load_tester/Makefile.am @@ -0,0 +1,21 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC 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b/src/libcharon/plugins/load_tester/load_tester_config.c @@ -0,0 +1,333 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "load_tester_config.h" + +#include <daemon.h> + +typedef struct private_load_tester_config_t private_load_tester_config_t; + +/** + * Private data of an load_tester_config_t object + */ +struct private_load_tester_config_t { + + /** + * Public part + */ + load_tester_config_t public; + + /** + * peer config + */ + peer_cfg_t *peer_cfg; + + /** + * virtual IP, if any + */ + host_t *vip; + + /** + * Remote address + */ + char *remote; + + /** + * IP address pool + */ + char *pool; + + /** + * IKE proposal + */ + proposal_t *proposal; + + /** + * Authentication method(s) to use/expect from initiator + */ + char *initiator_auth; + + /** + * Authentication method(s) use/expected from responder + */ + char *responder_auth; + + /** + * IKE_SA rekeying delay + */ + u_int ike_rekey; + + /** + * CHILD_SA rekeying delay + */ + u_int child_rekey; + + /** + * incremental numbering of generated configs + */ + u_int num; + + /** + * Dynamic source port, if used + */ + u_int16_t port; +}; + +/** + * Generate auth config from string + */ +static void generate_auth_cfg(private_load_tester_config_t *this, char *str, + peer_cfg_t *peer_cfg, bool local, int num) +{ + enumerator_t *enumerator; + auth_cfg_t *auth; + identification_t *id; + auth_class_t class; + eap_type_t type; + char buf[128]; + int rnd = 0; + + enumerator = enumerator_create_token(str, "|", " "); + while (enumerator->enumerate(enumerator, &str)) + { + auth = auth_cfg_create(); + rnd++; + + if (streq(str, "psk")) + { /* PSK authentication, use FQDNs */ + class = AUTH_CLASS_PSK; + if ((local && !num) || (!local && num)) + { + id = identification_create_from_string("srv.strongswan.org"); + } + else if (local) + { + snprintf(buf, sizeof(buf), "c%d-r%d.strongswan.org", num, rnd); + id = identification_create_from_string(buf); + } + else + { + id = identification_create_from_string("*.strongswan.org"); + } + } + else if (strneq(str, "eap", strlen("eap"))) + { /* EAP authentication, use a NAI */ + class = AUTH_CLASS_EAP; + if (*(str + strlen("eap")) == '-') + { + type = eap_type_from_string(str + strlen("eap-")); + if (type) + { + auth->add(auth, AUTH_RULE_EAP_TYPE, type); + } + } + if (local && num) + { + snprintf(buf, sizeof(buf), "1%.10d%.4d@strongswan.org", num, rnd); + id = identification_create_from_string(buf); + } + else + { + id = identification_create_from_encoding(ID_ANY, chunk_empty); + } + } + else + { + if (!streq(str, "pubkey")) + { + DBG1(DBG_CFG, "invalid authentication: '%s', fallback to pubkey", + str); + } + /* certificate authentication, use distinguished names */ + class = AUTH_CLASS_PUBKEY; + if ((local && !num) || (!local && num)) + { + id = identification_create_from_string( + "CN=srv, OU=load-test, O=strongSwan"); + } + else if (local) + { + snprintf(buf, sizeof(buf), + "CN=c%d-r%d, OU=load-test, O=strongSwan", num, rnd); + id = identification_create_from_string(buf); + } + else + { + id = identification_create_from_string( + "CN=*, OU=load-test, O=strongSwan"); + } + } + auth->add(auth, AUTH_RULE_AUTH_CLASS, class); + auth->add(auth, AUTH_RULE_IDENTITY, id); + peer_cfg->add_auth_cfg(peer_cfg, auth, local); + } + enumerator->destroy(enumerator); +} + +/** + * Generate a new initiator config, num = 0 for responder config + */ +static peer_cfg_t* generate_config(private_load_tester_config_t *this, uint num) +{ + ike_cfg_t *ike_cfg; + child_cfg_t *child_cfg; + peer_cfg_t *peer_cfg; + traffic_selector_t *ts; + proposal_t *proposal; + lifetime_cfg_t lifetime = { + .time = { + .life = this->child_rekey * 2, + .rekey = this->child_rekey, + .jitter = 0 + } + }; + + if (this->port && num) + { + ike_cfg = ike_cfg_create(FALSE, FALSE, + "0.0.0.0", this->port + num - 1, this->remote, IKEV2_NATT_PORT); + } + else + { + ike_cfg = ike_cfg_create(FALSE, FALSE, + "0.0.0.0", IKEV2_UDP_PORT, this->remote, IKEV2_UDP_PORT); + } + ike_cfg->add_proposal(ike_cfg, this->proposal->clone(this->proposal)); + peer_cfg = peer_cfg_create("load-test", 2, ike_cfg, + CERT_SEND_IF_ASKED, UNIQUE_NO, 1, /* keytries */ + this->ike_rekey, 0, /* rekey, reauth */ + 0, this->ike_rekey, /* jitter, overtime */ + FALSE, 0, /* mobike, dpddelay */ + this->vip ? this->vip->clone(this->vip) : NULL, + this->pool, FALSE, NULL, NULL); + if (num) + { /* initiator */ + generate_auth_cfg(this, this->initiator_auth, peer_cfg, TRUE, num); + generate_auth_cfg(this, this->responder_auth, peer_cfg, FALSE, num); + } + else + { /* responder */ + generate_auth_cfg(this, this->responder_auth, peer_cfg, TRUE, num); + generate_auth_cfg(this, this->initiator_auth, peer_cfg, FALSE, num); + } + + child_cfg = child_cfg_create("load-test", &lifetime, NULL, TRUE, + MODE_TUNNEL, ACTION_NONE, ACTION_NONE, FALSE, 0); + proposal = proposal_create_from_string(PROTO_ESP, "aes128-sha1"); + child_cfg->add_proposal(child_cfg, proposal); + ts = traffic_selector_create_dynamic(0, 0, 65535); + child_cfg->add_traffic_selector(child_cfg, TRUE, ts); + ts = traffic_selector_create_dynamic(0, 0, 65535); + child_cfg->add_traffic_selector(child_cfg, FALSE, ts); + peer_cfg->add_child_cfg(peer_cfg, child_cfg); + return peer_cfg; +} + +/** + * Implementation of backend_t.create_peer_cfg_enumerator. + */ +static enumerator_t* create_peer_cfg_enumerator(private_load_tester_config_t *this, + identification_t *me, + identification_t *other) +{ + return enumerator_create_single(this->peer_cfg, NULL); +} + +/** + * Implementation of backend_t.create_ike_cfg_enumerator. + */ +static enumerator_t* create_ike_cfg_enumerator(private_load_tester_config_t *this, + host_t *me, host_t *other) +{ + ike_cfg_t *ike_cfg; + + ike_cfg = this->peer_cfg->get_ike_cfg(this->peer_cfg); + return enumerator_create_single(ike_cfg, NULL); +} + +/** + * implements backend_t.get_peer_cfg_by_name. + */ +static peer_cfg_t *get_peer_cfg_by_name(private_load_tester_config_t *this, + char *name) +{ + if (streq(name, "load-test")) + { + return generate_config(this, this->num++); + } + return NULL; +} + +/** + * Implementation of load_tester_config_t.destroy. + */ +static void destroy(private_load_tester_config_t *this) +{ + this->peer_cfg->destroy(this->peer_cfg); + DESTROY_IF(this->proposal); + DESTROY_IF(this->vip); + free(this); +} + +/** + * Described in header. + */ +load_tester_config_t *load_tester_config_create() +{ + private_load_tester_config_t *this = malloc_thing(private_load_tester_config_t); + + this->public.backend.create_peer_cfg_enumerator = (enumerator_t*(*)(backend_t*, identification_t *me, identification_t *other))create_peer_cfg_enumerator; + this->public.backend.create_ike_cfg_enumerator = (enumerator_t*(*)(backend_t*, host_t *me, host_t *other))create_ike_cfg_enumerator; + this->public.backend.get_peer_cfg_by_name = (peer_cfg_t* (*)(backend_t*,char*))get_peer_cfg_by_name; + this->public.destroy = (void(*)(load_tester_config_t*))destroy; + + this->vip = NULL; + if (lib->settings->get_bool(lib->settings, + "charon.plugins.load-tester.request_virtual_ip", FALSE)) + { + this->vip = host_create_from_string("0.0.0.0", 0); + } + this->pool = lib->settings->get_str(lib->settings, + "charon.plugins.load-tester.pool", NULL); + this->remote = lib->settings->get_str(lib->settings, + "charon.plugins.load-tester.remote", "127.0.0.1"); + + this->proposal = proposal_create_from_string(PROTO_IKE, + lib->settings->get_str(lib->settings, + "charon.plugins.load-tester.proposal", "aes128-sha1-modp768")); + if (!this->proposal) + { /* fallback */ + this->proposal = proposal_create_from_string(PROTO_IKE, + "aes128-sha1-modp768"); + } + this->ike_rekey = lib->settings->get_int(lib->settings, + "charon.plugins.load-tester.ike_rekey", 0); + this->child_rekey = lib->settings->get_int(lib->settings, + "charon.plugins.load-tester.child_rekey", 600); + + this->initiator_auth = lib->settings->get_str(lib->settings, + "charon.plugins.load-tester.initiator_auth", "pubkey"); + this->responder_auth = lib->settings->get_str(lib->settings, + "charon.plugins.load-tester.responder_auth", "pubkey"); + + this->port = lib->settings->get_int(lib->settings, + "charon.plugins.load-tester.dynamic_port", 0); + + this->num = 1; + this->peer_cfg = generate_config(this, 0); + + return &this->public; +} + diff --git a/src/libcharon/plugins/load_tester/load_tester_config.h b/src/libcharon/plugins/load_tester/load_tester_config.h new file mode 100644 index 000000000..c22387743 --- /dev/null +++ b/src/libcharon/plugins/load_tester/load_tester_config.h @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup load_tester_config_t load_tester_config + * @{ @ingroup load_tester + */ + +#ifndef LOAD_TESTER_CONFIG_H_ +#define LOAD_TESTER_CONFIG_H_ + +#include <config/backend.h> + +typedef struct load_tester_config_t load_tester_config_t; + +/** + * Provide configurations for load testing. + */ +struct load_tester_config_t { + + /** + * Implements backend_t interface + */ + backend_t backend; + + /** + * Destroy the backend. + */ + void (*destroy)(load_tester_config_t *this); +}; + +/** + * Create a configuration backend for load testing. + * + * @return configuration backend + */ +load_tester_config_t *load_tester_config_create(); + +#endif /** LOAD_TESTER_CONFIG_H_ @}*/ diff --git a/src/libcharon/plugins/load_tester/load_tester_creds.c b/src/libcharon/plugins/load_tester/load_tester_creds.c new file mode 100644 index 000000000..890703c1a --- /dev/null +++ b/src/libcharon/plugins/load_tester/load_tester_creds.c @@ -0,0 +1,313 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "load_tester_creds.h" + +#include <time.h> + +#include <daemon.h> +#include <credentials/keys/shared_key.h> +#include <credentials/certificates/x509.h> +#include <utils/identification.h> + +typedef struct private_load_tester_creds_t private_load_tester_creds_t; + +/** + * Private data of an load_tester_creds_t object + */ +struct private_load_tester_creds_t { + /** + * Public part + */ + load_tester_creds_t public; + + /** + * Private key to create signatures + */ + private_key_t *private; + + /** + * CA certificate, to issue/verify peer certificates + */ + certificate_t *ca; + + /** + * serial number to issue certificates + */ + u_int32_t serial; + + /** + * Preshared key + */ + shared_key_t *shared; +}; + +/** + * 1024-bit RSA key: +-----BEGIN RSA PRIVATE KEY----- +MIICXQIBAAKBgQDQXr7poAPYZLxmTCqR51STGRuk9Hc5SWtTcs6b2RzpnP8EVRLx +JEVxOKE9Mw6n7mD1pNrupCpnpGRdLAV5VznTPhSQ6k7ppJJrxosRYg0pHTZqBUEC +7nQFwAe10g8q0UnM1wa4lJzGxDH78d21cVweJgbkxAeyriS0jhNs7gO5nQIDAQAB +AoGACVACtkxJf7VY2jWTPXwaQoy/uIqYfX3zhwI9i6eTbDlxCE+JDi/xzpKaWjLa +99RmjvP0OPArWQB239ck03x7gAm2obutosGbqbKzJZS5cyIayzyW9djZDHBdt9Ho +quKB39aspWit3xPzkrr+QeIkiggtmBKALTBxTwxAU+P6euECQQD4IPdrzKbCrO79 +LKvoPrQQtTjL6ogag9rI9n2ZuoK3/XVybh2byOXT8tA5G5jSz9Ac8XeVOsnH9gT5 +3WXeaLOFAkEA1vrm/hVSEasp5eATgQ7ig9CF+GGKqhTwXp/uOSl/h3IRmStu5J0C +9AkYyx0bn3j5R8iUEX/C00KSE1kQNh4NOQJAVOsLYlRG2idPH0xThQc4nuM2jes1 +K0Xm8ZISSDNhm1BeCoyPC4rExTW7d1/vfG5svgsRrvvQpOOYrl7MB0Lz9QJBALhg +AWJiyLsskEd90Vx7dpvUaEHo7jMGuEx/X6GYzK5Oj3dNP9NEMfc4IhJ5SWqRJ0KA +bTVA3MexLXT4iqXPSkkCQQDSjLhBwvEnSuW4ElIMzBwLbu7573z2gzU82Mj6trrw +Osoox/vmcepT1Wjy4AvPZHgxp7vEXNSeS+M5L29QNTp8 +-----END RSA PRIVATE KEY----- + */ +static char private[] = { + 0x30,0x82,0x02,0x5d,0x02,0x01,0x00,0x02,0x81,0x81,0x00,0xd0,0x5e,0xbe,0xe9,0xa0, + 0x03,0xd8,0x64,0xbc,0x66,0x4c,0x2a,0x91,0xe7,0x54,0x93,0x19,0x1b,0xa4,0xf4,0x77, + 0x39,0x49,0x6b,0x53,0x72,0xce,0x9b,0xd9,0x1c,0xe9,0x9c,0xff,0x04,0x55,0x12,0xf1, + 0x24,0x45,0x71,0x38,0xa1,0x3d,0x33,0x0e,0xa7,0xee,0x60,0xf5,0xa4,0xda,0xee,0xa4, + 0x2a,0x67,0xa4,0x64,0x5d,0x2c,0x05,0x79,0x57,0x39,0xd3,0x3e,0x14,0x90,0xea,0x4e, + 0xe9,0xa4,0x92,0x6b,0xc6,0x8b,0x11,0x62,0x0d,0x29,0x1d,0x36,0x6a,0x05,0x41,0x02, + 0xee,0x74,0x05,0xc0,0x07,0xb5,0xd2,0x0f,0x2a,0xd1,0x49,0xcc,0xd7,0x06,0xb8,0x94, + 0x9c,0xc6,0xc4,0x31,0xfb,0xf1,0xdd,0xb5,0x71,0x5c,0x1e,0x26,0x06,0xe4,0xc4,0x07, + 0xb2,0xae,0x24,0xb4,0x8e,0x13,0x6c,0xee,0x03,0xb9,0x9d,0x02,0x03,0x01,0x00,0x01, + 0x02,0x81,0x80,0x09,0x50,0x02,0xb6,0x4c,0x49,0x7f,0xb5,0x58,0xda,0x35,0x93,0x3d, + 0x7c,0x1a,0x42,0x8c,0xbf,0xb8,0x8a,0x98,0x7d,0x7d,0xf3,0x87,0x02,0x3d,0x8b,0xa7, + 0x93,0x6c,0x39,0x71,0x08,0x4f,0x89,0x0e,0x2f,0xf1,0xce,0x92,0x9a,0x5a,0x32,0xda, + 0xf7,0xd4,0x66,0x8e,0xf3,0xf4,0x38,0xf0,0x2b,0x59,0x00,0x76,0xdf,0xd7,0x24,0xd3, + 0x7c,0x7b,0x80,0x09,0xb6,0xa1,0xbb,0xad,0xa2,0xc1,0x9b,0xa9,0xb2,0xb3,0x25,0x94, + 0xb9,0x73,0x22,0x1a,0xcb,0x3c,0x96,0xf5,0xd8,0xd9,0x0c,0x70,0x5d,0xb7,0xd1,0xe8, + 0xaa,0xe2,0x81,0xdf,0xd6,0xac,0xa5,0x68,0xad,0xdf,0x13,0xf3,0x92,0xba,0xfe,0x41, + 0xe2,0x24,0x8a,0x08,0x2d,0x98,0x12,0x80,0x2d,0x30,0x71,0x4f,0x0c,0x40,0x53,0xe3, + 0xfa,0x7a,0xe1,0x02,0x41,0x00,0xf8,0x20,0xf7,0x6b,0xcc,0xa6,0xc2,0xac,0xee,0xfd, + 0x2c,0xab,0xe8,0x3e,0xb4,0x10,0xb5,0x38,0xcb,0xea,0x88,0x1a,0x83,0xda,0xc8,0xf6, + 0x7d,0x99,0xba,0x82,0xb7,0xfd,0x75,0x72,0x6e,0x1d,0x9b,0xc8,0xe5,0xd3,0xf2,0xd0, + 0x39,0x1b,0x98,0xd2,0xcf,0xd0,0x1c,0xf1,0x77,0x95,0x3a,0xc9,0xc7,0xf6,0x04,0xf9, + 0xdd,0x65,0xde,0x68,0xb3,0x85,0x02,0x41,0x00,0xd6,0xfa,0xe6,0xfe,0x15,0x52,0x11, + 0xab,0x29,0xe5,0xe0,0x13,0x81,0x0e,0xe2,0x83,0xd0,0x85,0xf8,0x61,0x8a,0xaa,0x14, + 0xf0,0x5e,0x9f,0xee,0x39,0x29,0x7f,0x87,0x72,0x11,0x99,0x2b,0x6e,0xe4,0x9d,0x02, + 0xf4,0x09,0x18,0xcb,0x1d,0x1b,0x9f,0x78,0xf9,0x47,0xc8,0x94,0x11,0x7f,0xc2,0xd3, + 0x42,0x92,0x13,0x59,0x10,0x36,0x1e,0x0d,0x39,0x02,0x40,0x54,0xeb,0x0b,0x62,0x54, + 0x46,0xda,0x27,0x4f,0x1f,0x4c,0x53,0x85,0x07,0x38,0x9e,0xe3,0x36,0x8d,0xeb,0x35, + 0x2b,0x45,0xe6,0xf1,0x92,0x12,0x48,0x33,0x61,0x9b,0x50,0x5e,0x0a,0x8c,0x8f,0x0b, + 0x8a,0xc4,0xc5,0x35,0xbb,0x77,0x5f,0xef,0x7c,0x6e,0x6c,0xbe,0x0b,0x11,0xae,0xfb, + 0xd0,0xa4,0xe3,0x98,0xae,0x5e,0xcc,0x07,0x42,0xf3,0xf5,0x02,0x41,0x00,0xb8,0x60, + 0x01,0x62,0x62,0xc8,0xbb,0x2c,0x90,0x47,0x7d,0xd1,0x5c,0x7b,0x76,0x9b,0xd4,0x68, + 0x41,0xe8,0xee,0x33,0x06,0xb8,0x4c,0x7f,0x5f,0xa1,0x98,0xcc,0xae,0x4e,0x8f,0x77, + 0x4d,0x3f,0xd3,0x44,0x31,0xf7,0x38,0x22,0x12,0x79,0x49,0x6a,0x91,0x27,0x42,0x80, + 0x6d,0x35,0x40,0xdc,0xc7,0xb1,0x2d,0x74,0xf8,0x8a,0xa5,0xcf,0x4a,0x49,0x02,0x41, + 0x00,0xd2,0x8c,0xb8,0x41,0xc2,0xf1,0x27,0x4a,0xe5,0xb8,0x12,0x52,0x0c,0xcc,0x1c, + 0x0b,0x6e,0xee,0xf9,0xef,0x7c,0xf6,0x83,0x35,0x3c,0xd8,0xc8,0xfa,0xb6,0xba,0xf0, + 0x3a,0xca,0x28,0xc7,0xfb,0xe6,0x71,0xea,0x53,0xd5,0x68,0xf2,0xe0,0x0b,0xcf,0x64, + 0x78,0x31,0xa7,0xbb,0xc4,0x5c,0xd4,0x9e,0x4b,0xe3,0x39,0x2f,0x6f,0x50,0x35,0x3a, + 0x7c, +}; + +/** + * And an associated self-signed certificate +-----BEGIN CERTIFICATE----- +MIIB9DCCAV2gAwIBAgIBADANBgkqhkiG9w0BAQUFADA3MQwwCgYDVQQDEwNzcnYx +EjAQBgNVBAsTCWxvYWQtdGVzdDETMBEGA1UEChMKc3Ryb25nU3dhbjAeFw0wODEy +MDgxODU4NDhaFw0xODEyMDYxODU4NDhaMDcxDDAKBgNVBAMTA3NydjESMBAGA1UE +CxMJbG9hZC10ZXN0MRMwEQYDVQQKEwpzdHJvbmdTd2FuMIGfMA0GCSqGSIb3DQEB +AQUAA4GNADCBiQKBgQDQXr7poAPYZLxmTCqR51STGRuk9Hc5SWtTcs6b2RzpnP8E +VRLxJEVxOKE9Mw6n7mD1pNrupCpnpGRdLAV5VznTPhSQ6k7ppJJrxosRYg0pHTZq +BUEC7nQFwAe10g8q0UnM1wa4lJzGxDH78d21cVweJgbkxAeyriS0jhNs7gO5nQID +AQABoxAwDjAMBgNVHRMEBTADAQH/MA0GCSqGSIb3DQEBBQUAA4GBAF39Xedyk2wj +qOcaaZ7ypb8RDlLvS0uaJMVtLtIhtb2weMMlgdmOnKXEYrJL2/mbp14Fhe+XYME9 +nZLAnmUnX8bQWCsQlajb7YGE8w6QDMwXUVgSXTMhRl+PRX2CMIUzU21h1EIx65Po +CwMLbJ7vQqwPHXRitDmNkEOK9H+vRnDf +-----END CERTIFICATE----- + + */ +char cert[] = { + 0x30,0x82,0x01,0xf4,0x30,0x82,0x01,0x5d,0xa0,0x03,0x02,0x01,0x02,0x02,0x01,0x00, + 0x30,0x0d,0x06,0x09,0x2a,0x86,0x48,0x86,0xf7,0x0d,0x01,0x01,0x05,0x05,0x00,0x30, + 0x37,0x31,0x0c,0x30,0x0a,0x06,0x03,0x55,0x04,0x03,0x13,0x03,0x73,0x72,0x76,0x31, + 0x12,0x30,0x10,0x06,0x03,0x55,0x04,0x0b,0x13,0x09,0x6c,0x6f,0x61,0x64,0x2d,0x74, + 0x65,0x73,0x74,0x31,0x13,0x30,0x11,0x06,0x03,0x55,0x04,0x0a,0x13,0x0a,0x73,0x74, + 0x72,0x6f,0x6e,0x67,0x53,0x77,0x61,0x6e,0x30,0x1e,0x17,0x0d,0x30,0x38,0x31,0x32, + 0x30,0x38,0x31,0x38,0x35,0x38,0x34,0x38,0x5a,0x17,0x0d,0x31,0x38,0x31,0x32,0x30, + 0x36,0x31,0x38,0x35,0x38,0x34,0x38,0x5a,0x30,0x37,0x31,0x0c,0x30,0x0a,0x06,0x03, + 0x55,0x04,0x03,0x13,0x03,0x73,0x72,0x76,0x31,0x12,0x30,0x10,0x06,0x03,0x55,0x04, + 0x0b,0x13,0x09,0x6c,0x6f,0x61,0x64,0x2d,0x74,0x65,0x73,0x74,0x31,0x13,0x30,0x11, + 0x06,0x03,0x55,0x04,0x0a,0x13,0x0a,0x73,0x74,0x72,0x6f,0x6e,0x67,0x53,0x77,0x61, + 0x6e,0x30,0x81,0x9f,0x30,0x0d,0x06,0x09,0x2a,0x86,0x48,0x86,0xf7,0x0d,0x01,0x01, + 0x01,0x05,0x00,0x03,0x81,0x8d,0x00,0x30,0x81,0x89,0x02,0x81,0x81,0x00,0xd0,0x5e, + 0xbe,0xe9,0xa0,0x03,0xd8,0x64,0xbc,0x66,0x4c,0x2a,0x91,0xe7,0x54,0x93,0x19,0x1b, + 0xa4,0xf4,0x77,0x39,0x49,0x6b,0x53,0x72,0xce,0x9b,0xd9,0x1c,0xe9,0x9c,0xff,0x04, + 0x55,0x12,0xf1,0x24,0x45,0x71,0x38,0xa1,0x3d,0x33,0x0e,0xa7,0xee,0x60,0xf5,0xa4, + 0xda,0xee,0xa4,0x2a,0x67,0xa4,0x64,0x5d,0x2c,0x05,0x79,0x57,0x39,0xd3,0x3e,0x14, + 0x90,0xea,0x4e,0xe9,0xa4,0x92,0x6b,0xc6,0x8b,0x11,0x62,0x0d,0x29,0x1d,0x36,0x6a, + 0x05,0x41,0x02,0xee,0x74,0x05,0xc0,0x07,0xb5,0xd2,0x0f,0x2a,0xd1,0x49,0xcc,0xd7, + 0x06,0xb8,0x94,0x9c,0xc6,0xc4,0x31,0xfb,0xf1,0xdd,0xb5,0x71,0x5c,0x1e,0x26,0x06, + 0xe4,0xc4,0x07,0xb2,0xae,0x24,0xb4,0x8e,0x13,0x6c,0xee,0x03,0xb9,0x9d,0x02,0x03, + 0x01,0x00,0x01,0xa3,0x10,0x30,0x0e,0x30,0x0c,0x06,0x03,0x55,0x1d,0x13,0x04,0x05, + 0x30,0x03,0x01,0x01,0xff,0x30,0x0d,0x06,0x09,0x2a,0x86,0x48,0x86,0xf7,0x0d,0x01, + 0x01,0x05,0x05,0x00,0x03,0x81,0x81,0x00,0x5d,0xfd,0x5d,0xe7,0x72,0x93,0x6c,0x23, + 0xa8,0xe7,0x1a,0x69,0x9e,0xf2,0xa5,0xbf,0x11,0x0e,0x52,0xef,0x4b,0x4b,0x9a,0x24, + 0xc5,0x6d,0x2e,0xd2,0x21,0xb5,0xbd,0xb0,0x78,0xc3,0x25,0x81,0xd9,0x8e,0x9c,0xa5, + 0xc4,0x62,0xb2,0x4b,0xdb,0xf9,0x9b,0xa7,0x5e,0x05,0x85,0xef,0x97,0x60,0xc1,0x3d, + 0x9d,0x92,0xc0,0x9e,0x65,0x27,0x5f,0xc6,0xd0,0x58,0x2b,0x10,0x95,0xa8,0xdb,0xed, + 0x81,0x84,0xf3,0x0e,0x90,0x0c,0xcc,0x17,0x51,0x58,0x12,0x5d,0x33,0x21,0x46,0x5f, + 0x8f,0x45,0x7d,0x82,0x30,0x85,0x33,0x53,0x6d,0x61,0xd4,0x42,0x31,0xeb,0x93,0xe8, + 0x0b,0x03,0x0b,0x6c,0x9e,0xef,0x42,0xac,0x0f,0x1d,0x74,0x62,0xb4,0x39,0x8d,0x90, + 0x43,0x8a,0xf4,0x7f,0xaf,0x46,0x70,0xdf, +}; + + +/** + * A preshared key + */ +static char psk[] = { + 0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08 +}; + +/** + * Implements credential_set_t.create_private_enumerator + */ +static enumerator_t* create_private_enumerator(private_load_tester_creds_t *this, + key_type_t type, identification_t *id) +{ + if (this->private == NULL) + { + return NULL; + } + if (type != KEY_ANY && type != KEY_RSA) + { + return NULL; + } + if (id) + { + if (!this->private->has_fingerprint(this->private, id->get_encoding(id))) + { + return NULL; + } + } + return enumerator_create_single(this->private, NULL); +} + +/** + * Implements credential_set_t.create_cert_enumerator + */ +static enumerator_t* create_cert_enumerator(private_load_tester_creds_t *this, + certificate_type_t cert, key_type_t key, + identification_t *id, bool trusted) +{ + certificate_t *peer_cert; + public_key_t *peer_key, *ca_key; + u_int32_t serial; + time_t now; + + if (this->ca == NULL) + { + return NULL; + } + if (cert != CERT_ANY && cert != CERT_X509) + { + return NULL; + } + if (key != KEY_ANY && key != KEY_RSA) + { + return NULL; + } + if (!id) + { + return enumerator_create_single(this->ca, NULL); + } + ca_key = this->ca->get_public_key(this->ca); + if (ca_key) + { + if (ca_key->has_fingerprint(ca_key, id->get_encoding(id))) + { + ca_key->destroy(ca_key); + return enumerator_create_single(this->ca, NULL); + } + ca_key->destroy(ca_key); + } + if (this->ca->has_subject(this->ca, id)) + { + return enumerator_create_single(this->ca, NULL); + } + if (!trusted) + { + /* peer certificate, generate on demand */ + serial = htonl(++this->serial); + now = time(NULL); + peer_key = this->private->get_public_key(this->private); + peer_cert = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509, + BUILD_SIGNING_KEY, this->private, + BUILD_SIGNING_CERT, this->ca, + BUILD_PUBLIC_KEY, peer_key, + BUILD_SUBJECT, id, + BUILD_NOT_BEFORE_TIME, now - 60 * 60 * 24, + BUILD_NOT_AFTER_TIME, now + 60 * 60 * 24, + BUILD_SERIAL, chunk_from_thing(serial), + BUILD_END); + peer_key->destroy(peer_key); + if (peer_cert) + { + return enumerator_create_single(peer_cert, (void*)peer_cert->destroy); + } + } + return NULL; +} + +/** + * Implements credential_set_t.create_shared_enumerator + */ +static enumerator_t* create_shared_enumerator(private_load_tester_creds_t *this, + shared_key_type_t type, identification_t *me, + identification_t *other) +{ + return enumerator_create_single(this->shared, NULL); +} + +/** + * Implementation of load_tester_creds_t.destroy + */ +static void destroy(private_load_tester_creds_t *this) +{ + DESTROY_IF(this->private); + DESTROY_IF(this->ca); + this->shared->destroy(this->shared); + free(this); +} + +load_tester_creds_t *load_tester_creds_create() +{ + private_load_tester_creds_t *this = malloc_thing(private_load_tester_creds_t); + + this->public.credential_set.create_shared_enumerator = (enumerator_t*(*)(credential_set_t*, shared_key_type_t, identification_t*, identification_t*))create_shared_enumerator; + this->public.credential_set.create_private_enumerator = (enumerator_t*(*) (credential_set_t*, key_type_t, identification_t*))create_private_enumerator; + this->public.credential_set.create_cert_enumerator = (enumerator_t*(*) (credential_set_t*, certificate_type_t, key_type_t,identification_t *, bool))create_cert_enumerator; + this->public.credential_set.create_cdp_enumerator = (enumerator_t*(*) (credential_set_t *,certificate_type_t, identification_t *))return_null; + this->public.credential_set.cache_cert = (void (*)(credential_set_t *, certificate_t *))nop; + this->public.destroy = (void(*) (load_tester_creds_t*))destroy; + + this->private = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, KEY_RSA, + BUILD_BLOB_ASN1_DER, chunk_create(private, sizeof(private)), + BUILD_END); + + this->ca = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509, + BUILD_BLOB_ASN1_DER, chunk_create(cert, sizeof(cert)), + BUILD_X509_FLAG, X509_CA, + BUILD_END); + + this->shared = shared_key_create(SHARED_IKE, + chunk_clone(chunk_create(psk, sizeof(psk)))); + this->serial = 0; + return &this->public; +} + diff --git a/src/libcharon/plugins/load_tester/load_tester_creds.h b/src/libcharon/plugins/load_tester/load_tester_creds.h new file mode 100644 index 000000000..fb3541164 --- /dev/null +++ b/src/libcharon/plugins/load_tester/load_tester_creds.h @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup load_tester_creds_t load_tester_creds + * @{ @ingroup load_tester + */ + +#ifndef LOAD_TESTER_CREDS_H_ +#define LOAD_TESTER_CREDS_H_ + +#include <credentials/credential_set.h> + +typedef struct load_tester_creds_t load_tester_creds_t; + +/** + * Provide hard-coded credentials for load testing. + */ +struct load_tester_creds_t { + + /** + * Implements credential set interface. + */ + credential_set_t credential_set; + + /** + * Destroy the backend. + */ + void (*destroy)(load_tester_creds_t *this); +}; + +/** + * Create a credential set for load testing. + * + * @return credential set + */ +load_tester_creds_t *load_tester_creds_create(); + +#endif /** LOAD_TESTER_CREDS_H_ @}*/ diff --git a/src/libcharon/plugins/load_tester/load_tester_diffie_hellman.c b/src/libcharon/plugins/load_tester/load_tester_diffie_hellman.c new file mode 100644 index 000000000..d5ec3599b --- /dev/null +++ b/src/libcharon/plugins/load_tester/load_tester_diffie_hellman.c @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "load_tester_diffie_hellman.h" + +/** + * Implementation of gmp_diffie_hellman_t.get_my_public_value. + */ +static void get_my_public_value(load_tester_diffie_hellman_t *this, + chunk_t *value) +{ + *value = chunk_empty; +} + +/** + * Implementation of gmp_diffie_hellman_t.get_shared_secret. + */ +static status_t get_shared_secret(load_tester_diffie_hellman_t *this, + chunk_t *secret) +{ + *secret = chunk_empty; + return SUCCESS; +} + +/** + * Implementation of gmp_diffie_hellman_t.get_dh_group. + */ +static diffie_hellman_group_t get_dh_group(load_tester_diffie_hellman_t *this) +{ + return MODP_NULL; +} + +/** + * See header + */ +load_tester_diffie_hellman_t *load_tester_diffie_hellman_create( + diffie_hellman_group_t group) +{ + load_tester_diffie_hellman_t *this; + + if (group != MODP_NULL) + { + return NULL; + } + + this = malloc_thing(load_tester_diffie_hellman_t); + + this->dh.get_shared_secret = (status_t (*)(diffie_hellman_t *, chunk_t *))get_shared_secret; + this->dh.set_other_public_value = (void (*)(diffie_hellman_t *, chunk_t ))nop; + this->dh.get_my_public_value = (void (*)(diffie_hellman_t *, chunk_t *))get_my_public_value; + this->dh.get_dh_group = (diffie_hellman_group_t (*)(diffie_hellman_t *))get_dh_group; + this->dh.destroy = (void (*)(diffie_hellman_t *))free; + + return this; +} diff --git a/src/libcharon/plugins/load_tester/load_tester_diffie_hellman.h b/src/libcharon/plugins/load_tester/load_tester_diffie_hellman.h new file mode 100644 index 000000000..672157fb8 --- /dev/null +++ b/src/libcharon/plugins/load_tester/load_tester_diffie_hellman.h @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup load_tester_diffie_hellman load_tester_diffie_hellman + * @{ @ingroup load_tester + */ + +#ifndef LOAD_TESTER_DIFFIE_HELLMAN_H_ +#define LOAD_TESTER_DIFFIE_HELLMAN_H_ + +#include <crypto/diffie_hellman.h> + +typedef struct load_tester_diffie_hellman_t load_tester_diffie_hellman_t; + +/** + * A NULL Diffie Hellman implementation to avoid calculation overhead in tests. + */ +struct load_tester_diffie_hellman_t { + + /** + * Implements diffie_hellman_t interface. + */ + diffie_hellman_t dh; +}; + +/** + * Creates a new gmp_diffie_hellman_t object. + * + * @param group Diffie Hellman group, supports MODP_NULL only + * @return gmp_diffie_hellman_t object + */ +load_tester_diffie_hellman_t *load_tester_diffie_hellman_create( + diffie_hellman_group_t group); + +#endif /** LOAD_TESTER_DIFFIE_HELLMAN_H_ @}*/ diff --git a/src/libcharon/plugins/load_tester/load_tester_ipsec.c b/src/libcharon/plugins/load_tester/load_tester_ipsec.c new file mode 100644 index 000000000..1218443cc --- /dev/null +++ b/src/libcharon/plugins/load_tester/load_tester_ipsec.c @@ -0,0 +1,176 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "load_tester_ipsec.h" + +#include <time.h> + +typedef struct private_load_tester_ipsec_t private_load_tester_ipsec_t; + +/** + * Private variables and functions of kernel_pfkey class. + */ +struct private_load_tester_ipsec_t { + /** + * Public interface. + */ + load_tester_ipsec_t public; + + /** + * faked SPI counter + */ + u_int32_t spi; +}; + +/** + * Implementation of kernel_interface_t.get_spi. + */ +static status_t get_spi(private_load_tester_ipsec_t *this, + host_t *src, host_t *dst, + protocol_id_t protocol, u_int32_t reqid, + u_int32_t *spi) +{ + *spi = ++this->spi; + return SUCCESS; +} + +/** + * Implementation of kernel_interface_t.get_cpi. + */ +static status_t get_cpi(private_load_tester_ipsec_t *this, + host_t *src, host_t *dst, + u_int32_t reqid, u_int16_t *cpi) +{ + return FAILED; +} + +/** + * Implementation of kernel_interface_t.add_sa. + */ +static status_t add_sa(private_load_tester_ipsec_t *this, + host_t *src, host_t *dst, u_int32_t spi, + protocol_id_t protocol, u_int32_t reqid, + lifetime_cfg_t *lifetime, + u_int16_t enc_alg, chunk_t enc_key, + u_int16_t int_alg, chunk_t int_key, + ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi, + bool encap, bool inbound, traffic_selector_t *src_ts, + traffic_selector_t *dst_ts) +{ + return SUCCESS; +} + +/** + * Implementation of kernel_interface_t.update_sa. + */ +static status_t update_sa(private_load_tester_ipsec_t *this, + u_int32_t spi, protocol_id_t protocol, u_int16_t cpi, + host_t *src, host_t *dst, + host_t *new_src, host_t *new_dst, + bool encap, bool new_encap) +{ + return SUCCESS; +} + +/** + * Implementation of kernel_interface_t.query_sa. + */ +static status_t query_sa(private_load_tester_ipsec_t *this, host_t *src, + host_t *dst, u_int32_t spi, protocol_id_t protocol, + u_int64_t *bytes) +{ + return NOT_SUPPORTED; +} + +/** + * Implementation of kernel_interface_t.del_sa. + */ +static status_t del_sa(private_load_tester_ipsec_t *this, host_t *src, + host_t *dst, u_int32_t spi, protocol_id_t protocol, + u_int16_t cpi) +{ + return SUCCESS; +} + +/** + * Implementation of kernel_interface_t.add_policy. + */ +static status_t add_policy(private_load_tester_ipsec_t *this, + host_t *src, host_t *dst, + traffic_selector_t *src_ts, + traffic_selector_t *dst_ts, + policy_dir_t direction, u_int32_t spi, + protocol_id_t protocol, u_int32_t reqid, + ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi, + bool routed) +{ + return SUCCESS; +} + +/** + * Implementation of kernel_interface_t.query_policy. + */ +static status_t query_policy(private_load_tester_ipsec_t *this, + traffic_selector_t *src_ts, + traffic_selector_t *dst_ts, + policy_dir_t direction, u_int32_t *use_time) +{ + *use_time = time_monotonic(NULL); + return SUCCESS; +} + +/** + * Implementation of kernel_interface_t.del_policy. + */ +static status_t del_policy(private_load_tester_ipsec_t *this, + traffic_selector_t *src_ts, + traffic_selector_t *dst_ts, + policy_dir_t direction, bool unrouted) +{ + return SUCCESS; +} + +/** + * Implementation of kernel_interface_t.destroy. + */ +static void destroy(private_load_tester_ipsec_t *this) +{ + free(this); +} + +/* + * Described in header. + */ +load_tester_ipsec_t *load_tester_ipsec_create() +{ + private_load_tester_ipsec_t *this = malloc_thing(private_load_tester_ipsec_t); + + /* public functions */ + this->public.interface.get_spi = (status_t(*)(kernel_ipsec_t*,host_t*,host_t*,protocol_id_t,u_int32_t,u_int32_t*))get_spi; + this->public.interface.get_cpi = (status_t(*)(kernel_ipsec_t*,host_t*,host_t*,u_int32_t,u_int16_t*))get_cpi; + this->public.interface.add_sa = (status_t(*)(kernel_ipsec_t *,host_t*,host_t*,u_int32_t,protocol_id_t,u_int32_t,lifetime_cfg_t*,u_int16_t,chunk_t,u_int16_t,chunk_t,ipsec_mode_t,u_int16_t,u_int16_t,bool,bool,traffic_selector_t*,traffic_selector_t*))add_sa; + this->public.interface.update_sa = (status_t(*)(kernel_ipsec_t*,u_int32_t,protocol_id_t,u_int16_t,host_t*,host_t*,host_t*,host_t*,bool,bool))update_sa; + this->public.interface.query_sa = (status_t(*)(kernel_ipsec_t*,host_t*,host_t*,u_int32_t,protocol_id_t,u_int64_t*))query_sa; + this->public.interface.del_sa = (status_t(*)(kernel_ipsec_t*,host_t*,host_t*,u_int32_t,protocol_id_t,u_int16_t))del_sa; + this->public.interface.add_policy = (status_t(*)(kernel_ipsec_t *this,host_t *, host_t *,traffic_selector_t *,traffic_selector_t *,policy_dir_t, u_int32_t,protocol_id_t, u_int32_t,ipsec_mode_t, u_int16_t, u_int16_t,bool))add_policy; + this->public.interface.query_policy = (status_t(*)(kernel_ipsec_t*,traffic_selector_t*,traffic_selector_t*,policy_dir_t,u_int32_t*))query_policy; + this->public.interface.del_policy = (status_t(*)(kernel_ipsec_t*,traffic_selector_t*,traffic_selector_t*,policy_dir_t,bool))del_policy; + this->public.interface.destroy = (void(*)(kernel_ipsec_t*)) destroy; + + this->spi = 0; + + return &this->public; +} + diff --git a/src/libcharon/plugins/load_tester/load_tester_ipsec.h b/src/libcharon/plugins/load_tester/load_tester_ipsec.h new file mode 100644 index 000000000..1e1bff84a --- /dev/null +++ b/src/libcharon/plugins/load_tester/load_tester_ipsec.h @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup load_tester_ipsec_i load_tester_ipsec + * @{ @ingroup load_tester + */ + +#ifndef LOAD_TESTER_IPSEC_H_ +#define LOAD_TESTER_IPSEC_H_ + +#include <kernel/kernel_ipsec.h> + +typedef struct load_tester_ipsec_t load_tester_ipsec_t; + +/** + * Implementation of a fake kernel ipsec interface for load testing. + */ +struct load_tester_ipsec_t { + + /** + * Implements kernel_ipsec_t interface + */ + kernel_ipsec_t interface; +}; + +/** + * Create a faked kernel ipsec interface instance. + * + * @return kernel_load_tester_ipsec_t instance + */ +load_tester_ipsec_t *load_tester_ipsec_create(); + +#endif /** LOAD_TESTER_IPSEC_H_ @}*/ diff --git a/src/libcharon/plugins/load_tester/load_tester_listener.c b/src/libcharon/plugins/load_tester/load_tester_listener.c new file mode 100644 index 000000000..96b0cf1ec --- /dev/null +++ b/src/libcharon/plugins/load_tester/load_tester_listener.c @@ -0,0 +1,102 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "load_tester_listener.h" + +#include <signal.h> + +#include <daemon.h> +#include <processing/jobs/delete_ike_sa_job.h> + +typedef struct private_load_tester_listener_t private_load_tester_listener_t; + +/** + * Private data of an load_tester_listener_t object + */ +struct private_load_tester_listener_t { + /** + * Public part + */ + load_tester_listener_t public; + + /** + * Delete IKE_SA after it has been established + */ + bool delete_after_established; + + /** + * Number of established SAs + */ + u_int established; + + /** + * Shutdown the daemon if we have established this SA count + */ + u_int shutdown_on; +}; + +/** + * Implementation of listener_t.ike_state_change + */ +static bool ike_state_change(private_load_tester_listener_t *this, + ike_sa_t *ike_sa, ike_sa_state_t state) +{ + if (state == IKE_ESTABLISHED) + { + ike_sa_id_t *id = ike_sa->get_id(ike_sa); + + if (this->delete_after_established) + { + charon->processor->queue_job(charon->processor, + (job_t*)delete_ike_sa_job_create(id, TRUE)); + } + + if (id->is_initiator(id)) + { + if (this->shutdown_on == ++this->established) + { + DBG1(DBG_CFG, "load-test complete, raising SIGTERM"); + kill(0, SIGTERM); + } + } + } + return TRUE; +} + +/** + * Implementation of load_tester_listener_t.destroy + */ +static void destroy(private_load_tester_listener_t *this) +{ + free(this); +} + +load_tester_listener_t *load_tester_listener_create(u_int shutdown_on) +{ + private_load_tester_listener_t *this = malloc_thing(private_load_tester_listener_t); + + memset(&this->public.listener, 0, sizeof(listener_t)); + this->public.listener.ike_state_change = (void*)ike_state_change; + this->public.destroy = (void(*) (load_tester_listener_t*))destroy; + + this->delete_after_established = lib->settings->get_bool(lib->settings, + "charon.plugins.load-tester.delete_after_established", FALSE); + + this->shutdown_on = shutdown_on; + this->established = 0; + + return &this->public; +} + diff --git a/src/libcharon/plugins/load_tester/load_tester_listener.h b/src/libcharon/plugins/load_tester/load_tester_listener.h new file mode 100644 index 000000000..b9599294c --- /dev/null +++ b/src/libcharon/plugins/load_tester/load_tester_listener.h @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup load_tester_listener_t load_tester_listener + * @{ @ingroup load_tester + */ + +#ifndef LOAD_TESTER_LISTENER_H_ +#define LOAD_TESTER_LISTENER_H_ + +#include <bus/bus.h> + +typedef struct load_tester_listener_t load_tester_listener_t; + +/** + * Provide hard-coded credentials for load testing. + */ +struct load_tester_listener_t { + + /** + * Implements listener set interface. + */ + listener_t listener; + + /** + * Destroy the backend. + */ + void (*destroy)(load_tester_listener_t *this); +}; + +/** + * Create a listener to handle special events during load test + * + * @param shutdown_on shut down the daemon after this many SAs are established + * @return listener + */ +load_tester_listener_t *load_tester_listener_create(u_int shutdown_on); + +#endif /** LOAD_TESTER_LISTENER_H_ @}*/ diff --git a/src/libcharon/plugins/load_tester/load_tester_plugin.c b/src/libcharon/plugins/load_tester/load_tester_plugin.c new file mode 100644 index 000000000..46145b803 --- /dev/null +++ b/src/libcharon/plugins/load_tester/load_tester_plugin.c @@ -0,0 +1,230 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "load_tester_plugin.h" +#include "load_tester_config.h" +#include "load_tester_creds.h" +#include "load_tester_ipsec.h" +#include "load_tester_listener.h" +#include "load_tester_diffie_hellman.h" + +#include <unistd.h> + +#include <daemon.h> +#include <processing/jobs/callback_job.h> +#include <threading/condvar.h> +#include <threading/mutex.h> + +typedef struct private_load_tester_plugin_t private_load_tester_plugin_t; + +/** + * private data of load_tester plugin + */ +struct private_load_tester_plugin_t { + + /** + * implements plugin interface + */ + load_tester_plugin_t public; + + /** + * load_tester configuration backend + */ + load_tester_config_t *config; + + /** + * load_tester credential set implementation + */ + load_tester_creds_t *creds; + + /** + * event handler, listens on bus + */ + load_tester_listener_t *listener; + + /** + * number of iterations per thread + */ + int iterations; + + /** + * number desired initiator threads + */ + int initiators; + + /** + * currenly running initiators + */ + int running; + + /** + * delay between initiations, in ms + */ + int delay; + + /** + * mutex to lock running field + */ + mutex_t *mutex; + + /** + * condvar to wait for initiators + */ + condvar_t *condvar; +}; + +/** + * Begin the load test + */ +static job_requeue_t do_load_test(private_load_tester_plugin_t *this) +{ + int i, s = 0, ms = 0; + + this->mutex->lock(this->mutex); + if (!this->running) + { + this->running = this->initiators; + } + this->mutex->unlock(this->mutex); + if (this->delay) + { + s = this->delay / 1000; + ms = this->delay % 1000; + } + + for (i = 0; this->iterations == 0 || i < this->iterations; i++) + { + peer_cfg_t *peer_cfg; + child_cfg_t *child_cfg = NULL; + enumerator_t *enumerator; + + peer_cfg = charon->backends->get_peer_cfg_by_name(charon->backends, + "load-test"); + if (!peer_cfg) + { + break; + } + enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg); + if (!enumerator->enumerate(enumerator, &child_cfg)) + { + enumerator->destroy(enumerator); + break; + } + enumerator->destroy(enumerator); + + charon->controller->initiate(charon->controller, + peer_cfg, child_cfg->get_ref(child_cfg), + NULL, NULL); + if (s) + { + sleep(s); + } + if (ms) + { + usleep(ms * 1000); + } + } + this->mutex->lock(this->mutex); + this->running--; + this->mutex->unlock(this->mutex); + this->condvar->signal(this->condvar); + return JOB_REQUEUE_NONE; +} + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(private_load_tester_plugin_t *this) +{ + this->iterations = -1; + this->mutex->lock(this->mutex); + while (this->running) + { + this->condvar->wait(this->condvar, this->mutex); + } + this->mutex->unlock(this->mutex); + charon->kernel_interface->remove_ipsec_interface(charon->kernel_interface, + (kernel_ipsec_constructor_t)load_tester_ipsec_create); + charon->backends->remove_backend(charon->backends, &this->config->backend); + charon->credentials->remove_set(charon->credentials, &this->creds->credential_set); + charon->bus->remove_listener(charon->bus, &this->listener->listener); + this->config->destroy(this->config); + this->creds->destroy(this->creds); + this->listener->destroy(this->listener); + lib->crypto->remove_dh(lib->crypto, + (dh_constructor_t)load_tester_diffie_hellman_create); + this->mutex->destroy(this->mutex); + this->condvar->destroy(this->condvar); + free(this); +} + +/* + * see header file + */ +plugin_t *load_tester_plugin_create() +{ + private_load_tester_plugin_t *this; + u_int i, shutdown_on = 0; + + if (!lib->settings->get_bool(lib->settings, + "charon.plugins.load-tester.enable", FALSE)) + { + DBG1(DBG_CFG, "disabling load-tester plugin, not configured"); + return NULL; + } + + this = malloc_thing(private_load_tester_plugin_t); + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + lib->crypto->add_dh(lib->crypto, MODP_NULL, + (dh_constructor_t)load_tester_diffie_hellman_create); + + this->delay = lib->settings->get_int(lib->settings, + "charon.plugins.load-tester.delay", 0); + this->iterations = lib->settings->get_int(lib->settings, + "charon.plugins.load-tester.iterations", 1); + this->initiators = lib->settings->get_int(lib->settings, + "charon.plugins.load-tester.initiators", 0); + if (lib->settings->get_bool(lib->settings, + "charon.plugins.load-tester.shutdown_when_complete", 0)) + { + shutdown_on = this->iterations * this->initiators; + } + + this->mutex = mutex_create(MUTEX_TYPE_DEFAULT); + this->condvar = condvar_create(CONDVAR_TYPE_DEFAULT); + this->config = load_tester_config_create(); + this->creds = load_tester_creds_create(); + this->listener = load_tester_listener_create(shutdown_on); + charon->backends->add_backend(charon->backends, &this->config->backend); + charon->credentials->add_set(charon->credentials, &this->creds->credential_set); + charon->bus->add_listener(charon->bus, &this->listener->listener); + + if (lib->settings->get_bool(lib->settings, + "charon.plugins.load-tester.fake_kernel", FALSE)) + { + charon->kernel_interface->add_ipsec_interface(charon->kernel_interface, + (kernel_ipsec_constructor_t)load_tester_ipsec_create); + } + this->running = 0; + for (i = 0; i < this->initiators; i++) + { + charon->processor->queue_job(charon->processor, + (job_t*)callback_job_create((callback_job_cb_t)do_load_test, + this, NULL, NULL)); + } + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/load_tester/load_tester_plugin.h b/src/libcharon/plugins/load_tester/load_tester_plugin.h new file mode 100644 index 000000000..15f2d1127 --- /dev/null +++ b/src/libcharon/plugins/load_tester/load_tester_plugin.h @@ -0,0 +1,44 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup load_tester load_tester + * @ingroup cplugins + * + * @defgroup load_tester_plugin load_tester_plugin + * @{ @ingroup load_tester + */ + +#ifndef LOAD_TESTER_PLUGIN_H_ +#define LOAD_TESTER_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct load_tester_plugin_t load_tester_plugin_t; + +/** + * Load tester plugin to inspect system core under high load. + * + * This plugin + */ +struct load_tester_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** LOAD_TESTER_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/medcli/Makefile.am b/src/libcharon/plugins/medcli/Makefile.am new file mode 100644 index 000000000..cdff8d854 --- /dev/null +++ b/src/libcharon/plugins/medcli/Makefile.am @@ -0,0 +1,19 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC 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a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/medcli/medcli_config.c b/src/libcharon/plugins/medcli/medcli_config.c new file mode 100644 index 000000000..e355d55f7 --- /dev/null +++ b/src/libcharon/plugins/medcli/medcli_config.c @@ -0,0 +1,407 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#define _GNU_SOURCE +#include <string.h> + +#include "medcli_config.h" + +#include <daemon.h> +#include <processing/jobs/callback_job.h> + +typedef struct private_medcli_config_t private_medcli_config_t; + +/** + * Private data of an medcli_config_t object + */ +struct private_medcli_config_t { + + /** + * Public part + */ + medcli_config_t public; + + /** + * database connection + */ + database_t *db; + + /** + * rekey time + */ + int rekey; + + /** + * dpd delay + */ + int dpd; + + /** + * default ike config + */ + ike_cfg_t *ike; +}; + +/** + * create a traffic selector from a CIDR notation string + */ +static traffic_selector_t *ts_from_string(char *str) +{ + if (str) + { + int netbits = 32; + host_t *net; + char *pos; + + str = strdupa(str); + pos = strchr(str, '/'); + if (pos) + { + *pos++ = '\0'; + netbits = atoi(pos); + } + else + { + if (strchr(str, ':')) + { + netbits = 128; + } + } + net = host_create_from_string(str, 0); + if (net) + { + return traffic_selector_create_from_subnet(net, netbits, 0, 0); + } + } + return traffic_selector_create_dynamic(0, 0, 65535); +} + +/** + * implements backend_t.get_peer_cfg_by_name. + */ +static peer_cfg_t *get_peer_cfg_by_name(private_medcli_config_t *this, char *name) +{ + enumerator_t *e; + peer_cfg_t *peer_cfg, *med_cfg; + auth_cfg_t *auth; + ike_cfg_t *ike_cfg; + child_cfg_t *child_cfg; + chunk_t me, other; + char *address, *local_net, *remote_net; + lifetime_cfg_t lifetime = { + .time = { + .life = this->rekey * 60 + this->rekey, + .rekey = this->rekey, + .jitter = this->rekey + } + }; + + /* query mediation server config: + * - build ike_cfg/peer_cfg for mediation connection on-the-fly + */ + e = this->db->query(this->db, + "SELECT Address, ClientConfig.KeyId, MediationServerConfig.KeyId " + "FROM MediationServerConfig JOIN ClientConfig", + DB_TEXT, DB_BLOB, DB_BLOB); + if (!e || !e->enumerate(e, &address, &me, &other)) + { + DESTROY_IF(e); + return NULL; + } + ike_cfg = ike_cfg_create(FALSE, FALSE, + "0.0.0.0", IKEV2_UDP_PORT, address, IKEV2_UDP_PORT); + ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE)); + med_cfg = peer_cfg_create( + "mediation", 2, ike_cfg, + CERT_NEVER_SEND, UNIQUE_REPLACE, + 1, this->rekey*60, 0, /* keytries, rekey, reauth */ + this->rekey*5, this->rekey*3, /* jitter, overtime */ + TRUE, this->dpd, /* mobike, dpddelay */ + NULL, NULL, /* vip, pool */ + TRUE, NULL, NULL); /* mediation, med by, peer id */ + e->destroy(e); + + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY); + auth->add(auth, AUTH_RULE_IDENTITY, + identification_create_from_encoding(ID_KEY_ID, me)); + med_cfg->add_auth_cfg(med_cfg, auth, TRUE); + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY); + auth->add(auth, AUTH_RULE_IDENTITY, + identification_create_from_encoding(ID_KEY_ID, other)); + med_cfg->add_auth_cfg(med_cfg, auth, FALSE); + + /* query mediated config: + * - use any-any ike_cfg + * - build peer_cfg on-the-fly using med_cfg + * - add a child_cfg + */ + e = this->db->query(this->db, + "SELECT ClientConfig.KeyId, Connection.KeyId, " + "Connection.LocalSubnet, Connection.RemoteSubnet " + "FROM ClientConfig JOIN Connection " + "WHERE Active AND Alias = ?", DB_TEXT, name, + DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT); + if (!e || !e->enumerate(e, &me, &other, &local_net, &remote_net)) + { + DESTROY_IF(e); + return NULL; + } + peer_cfg = peer_cfg_create( + name, 2, this->ike->get_ref(this->ike), + CERT_NEVER_SEND, UNIQUE_REPLACE, + 1, this->rekey*60, 0, /* keytries, rekey, reauth */ + this->rekey*5, this->rekey*3, /* jitter, overtime */ + TRUE, this->dpd, /* mobike, dpddelay */ + NULL, NULL, /* vip, pool */ + FALSE, med_cfg, /* mediation, med by */ + identification_create_from_encoding(ID_KEY_ID, other)); + + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY); + auth->add(auth, AUTH_RULE_IDENTITY, + identification_create_from_encoding(ID_KEY_ID, me)); + peer_cfg->add_auth_cfg(peer_cfg, auth, TRUE); + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY); + auth->add(auth, AUTH_RULE_IDENTITY, + identification_create_from_encoding(ID_KEY_ID, other)); + peer_cfg->add_auth_cfg(peer_cfg, auth, FALSE); + + child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE, + MODE_TUNNEL, ACTION_NONE, ACTION_NONE, FALSE, 0); + child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP)); + child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net)); + child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net)); + peer_cfg->add_child_cfg(peer_cfg, child_cfg); + e->destroy(e); + return peer_cfg; +} + +/** + * Implementation of backend_t.create_ike_cfg_enumerator. + */ +static enumerator_t* create_ike_cfg_enumerator(private_medcli_config_t *this, + host_t *me, host_t *other) +{ + return enumerator_create_single(this->ike, NULL); +} + +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** inner SQL enumerator */ + enumerator_t *inner; + /** currently enumerated peer config */ + peer_cfg_t *current; + /** ike cfg to use in peer cfg */ + ike_cfg_t *ike; + /** rekey time */ + int rekey; + /** dpd time */ + int dpd; +} peer_enumerator_t; + +/** + * Implementation of peer_enumerator_t.public.enumerate + */ +static bool peer_enumerator_enumerate(peer_enumerator_t *this, peer_cfg_t **cfg) +{ + char *name, *local_net, *remote_net; + chunk_t me, other; + child_cfg_t *child_cfg; + auth_cfg_t *auth; + lifetime_cfg_t lifetime = { + .time = { + .life = this->rekey * 60 + this->rekey, + .rekey = this->rekey, + .jitter = this->rekey + } + }; + + DESTROY_IF(this->current); + if (!this->inner->enumerate(this->inner, &name, &me, &other, + &local_net, &remote_net)) + { + this->current = NULL; + return FALSE; + } + this->current = peer_cfg_create( + name, 2, this->ike->get_ref(this->ike), + CERT_NEVER_SEND, UNIQUE_REPLACE, + 1, this->rekey*60, 0, /* keytries, rekey, reauth */ + this->rekey*5, this->rekey*3, /* jitter, overtime */ + TRUE, this->dpd, /* mobike, dpddelay */ + NULL, NULL, /* vip, pool */ + FALSE, NULL, NULL); /* mediation, med by, peer id */ + + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY); + auth->add(auth, AUTH_RULE_IDENTITY, + identification_create_from_encoding(ID_KEY_ID, me)); + this->current->add_auth_cfg(this->current, auth, TRUE); + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY); + auth->add(auth, AUTH_RULE_IDENTITY, + identification_create_from_encoding(ID_KEY_ID, other)); + this->current->add_auth_cfg(this->current, auth, FALSE); + + child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE, MODE_TUNNEL, + ACTION_NONE, ACTION_NONE, FALSE, 0); + child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP)); + child_cfg->add_traffic_selector(child_cfg, TRUE, ts_from_string(local_net)); + child_cfg->add_traffic_selector(child_cfg, FALSE, ts_from_string(remote_net)); + this->current->add_child_cfg(this->current, child_cfg); + *cfg = this->current; + return TRUE; +} + +/** + * Implementation of peer_enumerator_t.public.destroy + */ +static void peer_enumerator_destroy(peer_enumerator_t *this) +{ + DESTROY_IF(this->current); + this->inner->destroy(this->inner); + free(this); +} + +/** + * Implementation of backend_t.create_peer_cfg_enumerator. + */ +static enumerator_t* create_peer_cfg_enumerator(private_medcli_config_t *this, + identification_t *me, + identification_t *other) +{ + peer_enumerator_t *e = malloc_thing(peer_enumerator_t); + + e->current = NULL; + e->ike = this->ike; + e->rekey = this->rekey; + e->dpd = this->dpd; + e->public.enumerate = (void*)peer_enumerator_enumerate; + e->public.destroy = (void*)peer_enumerator_destroy; + + /* filter on IDs: NULL or ANY or matching KEY_ID */ + e->inner = this->db->query(this->db, + "SELECT Alias, ClientConfig.KeyId, Connection.KeyId, " + "Connection.LocalSubnet, Connection.RemoteSubnet " + "FROM ClientConfig JOIN Connection " + "WHERE Active AND " + "(? OR ClientConfig.KeyId = ?) AND (? OR Connection.KeyId = ?)", + DB_INT, me == NULL || me->get_type(me) == ID_ANY, + DB_BLOB, me && me->get_type(me) == ID_KEY_ID ? + me->get_encoding(me) : chunk_empty, + DB_INT, other == NULL || other->get_type(other) == ID_ANY, + DB_BLOB, other && other->get_type(other) == ID_KEY_ID ? + other->get_encoding(other) : chunk_empty, + DB_TEXT, DB_BLOB, DB_BLOB, DB_TEXT, DB_TEXT); + if (!e->inner) + { + free(e); + return NULL; + } + return &e->public; +} + +/** + * initiate a peer config + */ +static job_requeue_t initiate_config(peer_cfg_t *peer_cfg) +{ + enumerator_t *enumerator; + child_cfg_t *child_cfg = NULL;; + + enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg); + enumerator->enumerate(enumerator, &child_cfg); + if (child_cfg) + { + child_cfg->get_ref(child_cfg); + peer_cfg->get_ref(peer_cfg); + enumerator->destroy(enumerator); + charon->controller->initiate(charon->controller, + peer_cfg, child_cfg, NULL, NULL); + } + else + { + enumerator->destroy(enumerator); + } + return JOB_REQUEUE_NONE; +} + +/** + * schedule initation of all "active" connections + */ +static void schedule_autoinit(private_medcli_config_t *this) +{ + enumerator_t *e; + char *name; + + e = this->db->query(this->db, "SELECT Alias FROM Connection WHERE Active", + DB_TEXT); + if (e) + { + while (e->enumerate(e, &name)) + { + peer_cfg_t *peer_cfg; + + peer_cfg = get_peer_cfg_by_name(this, name); + if (peer_cfg) + { + /* schedule asynchronous initiation job */ + charon->processor->queue_job(charon->processor, + (job_t*)callback_job_create( + (callback_job_cb_t)initiate_config, + peer_cfg, (void*)peer_cfg->destroy, NULL)); + } + } + e->destroy(e); + } +} + +/** + * Implementation of medcli_config_t.destroy. + */ +static void destroy(private_medcli_config_t *this) +{ + this->ike->destroy(this->ike); + free(this); +} + +/** + * Described in header. + */ +medcli_config_t *medcli_config_create(database_t *db) +{ + private_medcli_config_t *this = malloc_thing(private_medcli_config_t); + + this->public.backend.create_peer_cfg_enumerator = (enumerator_t*(*)(backend_t*, identification_t *me, identification_t *other))create_peer_cfg_enumerator; + this->public.backend.create_ike_cfg_enumerator = (enumerator_t*(*)(backend_t*, host_t *me, host_t *other))create_ike_cfg_enumerator; + this->public.backend.get_peer_cfg_by_name = (peer_cfg_t* (*)(backend_t*,char*))get_peer_cfg_by_name; + this->public.destroy = (void(*)(medcli_config_t*))destroy; + + this->db = db; + this->rekey = lib->settings->get_time(lib->settings, "medcli.rekey", 1200); + this->dpd = lib->settings->get_time(lib->settings, "medcli.dpd", 300); + this->ike = ike_cfg_create(FALSE, FALSE, + "0.0.0.0", IKEV2_UDP_PORT, "0.0.0.0", IKEV2_UDP_PORT); + this->ike->add_proposal(this->ike, proposal_create_default(PROTO_IKE)); + + schedule_autoinit(this); + + return &this->public; +} + diff --git a/src/libcharon/plugins/medcli/medcli_config.h b/src/libcharon/plugins/medcli/medcli_config.h new file mode 100644 index 000000000..36c20adf7 --- /dev/null +++ b/src/libcharon/plugins/medcli/medcli_config.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup medcli_config_i medcli_config + * @{ @ingroup medcli + */ + +#ifndef MEDCLI_CONFIG_H_ +#define MEDCLI_CONFIG_H_ + +#include <config/backend.h> +#include <database/database.h> + +typedef struct medcli_config_t medcli_config_t; + +/** + * Mediation client configuration backend. + */ +struct medcli_config_t { + + /** + * Implements backend_t interface + */ + backend_t backend; + + /** + * Destroy the backend. + */ + void (*destroy)(medcli_config_t *this); +}; + +/** + * Create a medcli_config backend instance. + * + * @param db underlying database + * @return backend instance + */ +medcli_config_t *medcli_config_create(database_t *db); + +#endif /** MEDCLI_CONFIG_H_ @}*/ diff --git a/src/libcharon/plugins/medcli/medcli_creds.c b/src/libcharon/plugins/medcli/medcli_creds.c new file mode 100644 index 000000000..9729df3f5 --- /dev/null +++ b/src/libcharon/plugins/medcli/medcli_creds.c @@ -0,0 +1,243 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "medcli_creds.h" + +#include <daemon.h> +#include <library.h> +#include <utils/enumerator.h> + +typedef struct private_medcli_creds_t private_medcli_creds_t; + +/** + * Private data of an medcli_creds_t object + */ +struct private_medcli_creds_t { + + /** + * Public part + */ + medcli_creds_t public; + + /** + * underlying database handle + */ + database_t *db; +}; + +/** + * enumerator over private keys + */ +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** inner SQL enumerator */ + enumerator_t *inner; + /** currently enumerated private key */ + private_key_t *current; +} private_enumerator_t; + +/** + * Implementation of private_enumerator_t.public.enumerate + */ +static bool private_enumerator_enumerate(private_enumerator_t *this, + private_key_t **key) +{ + chunk_t chunk; + + DESTROY_IF(this->current); + while (this->inner->enumerate(this->inner, &chunk)) + { + this->current = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, KEY_RSA, + BUILD_BLOB_ASN1_DER, chunk, + BUILD_END); + if (this->current) + { + *key = this->current; + return TRUE; + } + } + this->current = NULL; + return FALSE; +} + +/** + * Implementation of private_enumerator_t.public.destroy + */ +static void private_enumerator_destroy(private_enumerator_t *this) +{ + DESTROY_IF(this->current); + this->inner->destroy(this->inner); + free(this); +} + +/** + * Implementation of credential_set_t.create_private_enumerator. + */ +static enumerator_t* create_private_enumerator(private_medcli_creds_t *this, + key_type_t type, identification_t *id) +{ + private_enumerator_t *e; + + if ((type != KEY_RSA && type != KEY_ANY) || + id == NULL || id->get_type(id) != ID_KEY_ID) + { + DBG1(DBG_CFG, "%N - %Y", key_type_names, type, id); + return NULL; + } + + e = malloc_thing(private_enumerator_t); + e->current = NULL; + e->public.enumerate = (void*)private_enumerator_enumerate; + e->public.destroy = (void*)private_enumerator_destroy; + e->inner = this->db->query(this->db, + "SELECT PrivateKey FROM ClientConfig WHERE KeyId = ?", + DB_BLOB, id->get_encoding(id), + DB_BLOB); + if (!e->inner) + { + free(e); + return NULL; + } + return &e->public; +} + +/** + * enumerator over certificates + */ +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** inner SQL enumerator */ + enumerator_t *inner; + /** currently enumerated cert */ + certificate_t *current; + /** type of requested key */ + key_type_t type; +} cert_enumerator_t; + +/** + * Implementation of cert_enumerator_t.public.enumerate + */ +static bool cert_enumerator_enumerate(cert_enumerator_t *this, + certificate_t **cert) +{ + public_key_t *public; + chunk_t chunk; + + DESTROY_IF(this->current); + while (this->inner->enumerate(this->inner, &chunk)) + { + public = lib->creds->create(lib->creds, CRED_PUBLIC_KEY, KEY_ANY, + BUILD_BLOB_ASN1_DER, chunk, + BUILD_END); + if (public) + { + if (this->type == KEY_ANY || this->type == public->get_type(public)) + { + this->current = lib->creds->create(lib->creds, + CRED_CERTIFICATE, CERT_TRUSTED_PUBKEY, + BUILD_PUBLIC_KEY, public, BUILD_END); + public->destroy(public); + if (this->current) + { + *cert = this->current; + return TRUE; + } + } + else + { + public->destroy(public); + } + } + } + this->current = NULL; + return FALSE; +} + +/** + * Implementation of cert_enumerator_t.public.destroy + */ +static void cert_enumerator_destroy(cert_enumerator_t *this) +{ + DESTROY_IF(this->current); + this->inner->destroy(this->inner); + free(this); +} + +/** + * Implementation of credential_set_t.create_cert_enumerator. + */ +static enumerator_t* create_cert_enumerator(private_medcli_creds_t *this, + certificate_type_t cert, key_type_t key, + identification_t *id, bool trusted) +{ + cert_enumerator_t *e; + + if ((cert != CERT_TRUSTED_PUBKEY && cert != CERT_ANY) || + id == NULL || id->get_type(id) != ID_KEY_ID) + { + return NULL; + } + + e = malloc_thing(cert_enumerator_t); + e->current = NULL; + e->type = key; + e->public.enumerate = (void*)cert_enumerator_enumerate; + e->public.destroy = (void*)cert_enumerator_destroy; + e->inner = this->db->query(this->db, + "SELECT PublicKey FROM ClientConfig WHERE KeyId = ? UNION " + "SELECT PublicKey FROM MediationServerConfig WHERE KeyId = ? UNION " + "SELECT PublicKey FROM Connection WHERE KeyId = ?", + DB_BLOB, id->get_encoding(id), + DB_BLOB, id->get_encoding(id), + DB_BLOB, id->get_encoding(id), + DB_BLOB); + if (!e->inner) + { + free(e); + return NULL; + } + return &e->public; +} + +/** + * Implementation of backend_t.destroy. + */ +static void destroy(private_medcli_creds_t *this) +{ + free(this); +} + +/** + * Described in header. + */ +medcli_creds_t *medcli_creds_create(database_t *db) +{ + private_medcli_creds_t *this = malloc_thing(private_medcli_creds_t); + + this->public.set.create_private_enumerator = (void*)create_private_enumerator; + this->public.set.create_cert_enumerator = (void*)create_cert_enumerator; + this->public.set.create_shared_enumerator = (void*)return_null; + this->public.set.create_cdp_enumerator = (void*)return_null; + this->public.set.cache_cert = (void*)nop; + + this->public.destroy = (void (*)(medcli_creds_t*))destroy; + + this->db = db; + + return &this->public; +} + diff --git a/src/libcharon/plugins/medcli/medcli_creds.h b/src/libcharon/plugins/medcli/medcli_creds.h new file mode 100644 index 000000000..4b5402653 --- /dev/null +++ b/src/libcharon/plugins/medcli/medcli_creds.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup medcli_creds_i medcli_creds + * @{ @ingroup medcli + */ + +#ifndef MEDCLI_CREDS_H_ +#define MEDCLI_CREDS_H_ + +#include <credentials/credential_set.h> +#include <database/database.h> + +typedef struct medcli_creds_t medcli_creds_t; + +/** + * Mediation client credentials database. + */ +struct medcli_creds_t { + + /** + * Implements credential_set_t interface + */ + credential_set_t set; + + /** + * Destroy the credentials databse. + */ + void (*destroy)(medcli_creds_t *this); +}; + +/** + * Create the medcli credential set. + * + * @param database underlying database + * @return credential set implementation on that database + */ +medcli_creds_t *medcli_creds_create(database_t *database); + +#endif /** MEDCLI_CREDS_H_ @}*/ diff --git a/src/libcharon/plugins/medcli/medcli_listener.c b/src/libcharon/plugins/medcli/medcli_listener.c new file mode 100644 index 000000000..142f02e6c --- /dev/null +++ b/src/libcharon/plugins/medcli/medcli_listener.c @@ -0,0 +1,133 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "medcli_listener.h" + +#include <daemon.h> +#include <library.h> + +typedef struct private_medcli_listener_t private_medcli_listener_t; +typedef enum mediated_state_t mediated_state_t; + +/** + * state of a mediated connection + */ +enum mediated_state_t { + STATE_DOWN = 1, + STATE_CONNECTING = 2, + STATE_UP = 3, +}; + +/** + * Private data of an medcli_listener_t object + */ +struct private_medcli_listener_t { + + /** + * Public part + */ + medcli_listener_t public; + + /** + * underlying database handle + */ + database_t *db; +}; + +/** + * Implementation of bus_listener_t.signal. + */ +static void set_state(private_medcli_listener_t *this, char *alias, + mediated_state_t state) +{ + this->db->execute(this->db, NULL, + "UPDATE Connection SET Status = ? WHERE Alias = ?", + DB_UINT, state, DB_TEXT, alias); +} +/** + * Implementation of listener_t.ike_state_change + */ +static bool ike_state_change(private_medcli_listener_t *this, + ike_sa_t *ike_sa, ike_sa_state_t state) +{ + if (ike_sa) + { + switch (state) + { + case IKE_CONNECTING: + set_state(this, ike_sa->get_name(ike_sa), STATE_CONNECTING); + break; + case IKE_DESTROYING: + set_state(this, ike_sa->get_name(ike_sa), STATE_DOWN); + default: + break; + } + } + return TRUE; +} + +/** + * Implementation of listener_t.child_state_change + */ +static bool child_state_change(private_medcli_listener_t *this, + ike_sa_t *ike_sa, child_sa_t *child_sa, child_sa_state_t state) +{ + if (ike_sa && child_sa) + { + switch (state) + { + case CHILD_INSTALLED: + set_state(this, child_sa->get_name(child_sa), STATE_UP); + break; + case CHILD_DESTROYING: + set_state(this, child_sa->get_name(child_sa), STATE_DOWN); + break; + default: + break; + } + } + return TRUE; +} + +/** + * Implementation of backend_t.destroy. + */ +static void destroy(private_medcli_listener_t *this) +{ + this->db->execute(this->db, NULL, "UPDATE Connection SET Status = ?", + DB_UINT, STATE_DOWN); + free(this); +} + +/** + * Described in header. + */ +medcli_listener_t *medcli_listener_create(database_t *db) +{ + private_medcli_listener_t *this = malloc_thing(private_medcli_listener_t); + + memset(&this->public.listener, 0, sizeof(listener_t)); + + this->public.listener.ike_state_change = (void*)ike_state_change; + this->public.listener.child_state_change = (void*)child_state_change; + this->public.destroy = (void (*)(medcli_listener_t*))destroy; + + this->db = db; + db->execute(db, NULL, "UPDATE Connection SET Status = ?", + DB_UINT, STATE_DOWN); + + return &this->public; +} + diff --git a/src/libcharon/plugins/medcli/medcli_listener.h b/src/libcharon/plugins/medcli/medcli_listener.h new file mode 100644 index 000000000..4768beccd --- /dev/null +++ b/src/libcharon/plugins/medcli/medcli_listener.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup medcli_listener_i medcli_listener + * @{ @ingroup medcli + */ + +#ifndef MEDCLI_LISTENER_H_ +#define MEDCLI_LISTENER_H_ + +#include <bus/bus.h> +#include <database/database.h> + +typedef struct medcli_listener_t medcli_listener_t; + +/** + * Mediation client listener, writes connection status to database + */ +struct medcli_listener_t { + + /** + * Implements bus_listener_t interface + */ + listener_t listener; + + /** + * Destroy the credentials databse. + */ + void (*destroy)(medcli_listener_t *this); +}; + +/** + * Create the medcli credential set. + * + * @param database underlying database + * @return listener + */ +medcli_listener_t *medcli_listener_create(database_t *database); + +#endif /** MEDCLI_LISTENER_H_ @}*/ diff --git a/src/libcharon/plugins/medcli/medcli_plugin.c b/src/libcharon/plugins/medcli/medcli_plugin.c new file mode 100644 index 000000000..397168d46 --- /dev/null +++ b/src/libcharon/plugins/medcli/medcli_plugin.c @@ -0,0 +1,109 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "medcli_plugin.h" + +#include "medcli_creds.h" +#include "medcli_config.h" +#include "medcli_listener.h" + +#include <daemon.h> + +typedef struct private_medcli_plugin_t private_medcli_plugin_t; + +/** + * private data of medcli plugin + */ +struct private_medcli_plugin_t { + + /** + * implements plugin interface + */ + medcli_plugin_t public; + + /** + * database connection instance + */ + database_t *db; + + /** + * medcli credential set instance + */ + medcli_creds_t *creds; + + /** + * medcli config database + */ + medcli_config_t *config; + + /** + * Listener to update database connection state + */ + medcli_listener_t *listener; +}; + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(private_medcli_plugin_t *this) +{ + charon->bus->remove_listener(charon->bus, &this->listener->listener); + charon->backends->remove_backend(charon->backends, &this->config->backend); + charon->credentials->remove_set(charon->credentials, &this->creds->set); + this->listener->destroy(this->listener); + this->config->destroy(this->config); + this->creds->destroy(this->creds); + this->db->destroy(this->db); + free(this); +} + +/* + * see header file + */ +plugin_t *medcli_plugin_create() +{ + char *uri; + private_medcli_plugin_t *this = malloc_thing(private_medcli_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + uri = lib->settings->get_str(lib->settings, + "medcli.database", NULL); + if (!uri) + { + DBG1(DBG_CFG, "mediation client database URI not defined, skipped"); + free(this); + return NULL; + } + + this->db = lib->db->create(lib->db, uri); + if (this->db == NULL) + { + DBG1(DBG_CFG, "opening mediation client database failed"); + free(this); + return NULL; + } + + this->creds = medcli_creds_create(this->db); + this->config = medcli_config_create(this->db); + this->listener = medcli_listener_create(this->db); + + charon->credentials->add_set(charon->credentials, &this->creds->set); + charon->backends->add_backend(charon->backends, &this->config->backend); + charon->bus->add_listener(charon->bus, &this->listener->listener); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/medcli/medcli_plugin.h b/src/libcharon/plugins/medcli/medcli_plugin.h new file mode 100644 index 000000000..44e7bb525 --- /dev/null +++ b/src/libcharon/plugins/medcli/medcli_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup medcli medcli + * @ingroup cplugins + * + * @defgroup medcli_plugin medcli_plugin + * @{ @ingroup medcli + */ + +#ifndef MEDCLI_PLUGIN_H_ +#define MEDCLI_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct medcli_plugin_t medcli_plugin_t; + +/** + * Mediation client database plugin. + */ +struct medcli_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** MEDCLI_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/medsrv/Makefile.am b/src/libcharon/plugins/medsrv/Makefile.am new file mode 100644 index 000000000..7f5c8e2b3 --- /dev/null +++ b/src/libcharon/plugins/medsrv/Makefile.am @@ -0,0 +1,18 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-medsrv.la +else +plugin_LTLIBRARIES = libstrongswan-medsrv.la +endif + +libstrongswan_medsrv_la_SOURCES = \ + medsrv_plugin.h medsrv_plugin.c \ + medsrv_creds.h medsrv_creds.c \ + medsrv_config.h medsrv_config.c + +libstrongswan_medsrv_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/medsrv/Makefile.in b/src/libcharon/plugins/medsrv/Makefile.in new file mode 100644 index 000000000..a103a1340 --- /dev/null +++ b/src/libcharon/plugins/medsrv/Makefile.in @@ -0,0 +1,591 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src/libcharon/plugins/medsrv +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/config/libtool.m4 \ + $(top_srcdir)/m4/config/ltoptions.m4 \ + $(top_srcdir)/m4/config/ltsugar.m4 \ + $(top_srcdir)/m4/config/ltversion.m4 \ + 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distclean-tags distdir dvi dvi-am html \ + html-am info info-am install install-am install-data \ + install-data-am install-dvi install-dvi-am install-exec \ + install-exec-am install-html install-html-am install-info \ + install-info-am install-man install-pdf install-pdf-am \ + install-pluginLTLIBRARIES install-ps install-ps-am \ + install-strip installcheck installcheck-am installdirs \ + maintainer-clean maintainer-clean-generic mostlyclean \ + mostlyclean-compile mostlyclean-generic mostlyclean-libtool \ + pdf pdf-am ps ps-am tags uninstall uninstall-am \ + uninstall-pluginLTLIBRARIES + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/medsrv/medsrv_config.c b/src/libcharon/plugins/medsrv/medsrv_config.c new file mode 100644 index 000000000..c23955ad0 --- /dev/null +++ b/src/libcharon/plugins/medsrv/medsrv_config.c @@ -0,0 +1,154 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <string.h> + +#include "medsrv_config.h" + +#include <daemon.h> + +typedef struct private_medsrv_config_t private_medsrv_config_t; + +/** + * Private data of an medsrv_config_t object + */ +struct private_medsrv_config_t { + + /** + * Public part + */ + medsrv_config_t public; + + /** + * database connection + */ + database_t *db; + + /** + * rekey time + */ + int rekey; + + /** + * dpd delay + */ + int dpd; + + /** + * default ike config + */ + ike_cfg_t *ike; +}; + +/** + * implements backend_t.get_peer_cfg_by_name. + */ +static peer_cfg_t *get_peer_cfg_by_name(private_medsrv_config_t *this, char *name) +{ + return NULL; +} + +/** + * Implementation of backend_t.create_ike_cfg_enumerator. + */ +static enumerator_t* create_ike_cfg_enumerator(private_medsrv_config_t *this, + host_t *me, host_t *other) +{ + return enumerator_create_single(this->ike, NULL); +} + +/** + * Implementation of backend_t.create_peer_cfg_enumerator. + */ +static enumerator_t* create_peer_cfg_enumerator(private_medsrv_config_t *this, + identification_t *me, + identification_t *other) +{ + enumerator_t *e; + + if (!me || !other || other->get_type(other) != ID_KEY_ID) + { + return NULL; + } + e = this->db->query(this->db, + "SELECT CONCAT(peer.alias, CONCAT('@', user.login)) FROM " + "peer JOIN user ON peer.user = user.id " + "WHERE peer.keyid = ?", DB_BLOB, other->get_encoding(other), + DB_TEXT); + if (e) + { + peer_cfg_t *peer_cfg; + auth_cfg_t *auth; + char *name; + + if (e->enumerate(e, &name)) + { + peer_cfg = peer_cfg_create( + name, 2, this->ike->get_ref(this->ike), + CERT_NEVER_SEND, UNIQUE_REPLACE, + 1, this->rekey*60, 0, /* keytries, rekey, reauth */ + this->rekey*5, this->rekey*3, /* jitter, overtime */ + TRUE, this->dpd, /* mobike, dpddelay */ + NULL, NULL, /* vip, pool */ + TRUE, NULL, NULL); /* mediation, med by, peer id */ + e->destroy(e); + + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY); + auth->add(auth, AUTH_RULE_IDENTITY, me->clone(me)); + peer_cfg->add_auth_cfg(peer_cfg, auth, TRUE); + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY); + auth->add(auth, AUTH_RULE_IDENTITY, other->clone(other)); + peer_cfg->add_auth_cfg(peer_cfg, auth, FALSE); + + return enumerator_create_single(peer_cfg, (void*)peer_cfg->destroy); + } + e->destroy(e); + } + return NULL; +} + +/** + * Implementation of medsrv_config_t.destroy. + */ +static void destroy(private_medsrv_config_t *this) +{ + this->ike->destroy(this->ike); + free(this); +} + +/** + * Described in header. + */ +medsrv_config_t *medsrv_config_create(database_t *db) +{ + private_medsrv_config_t *this = malloc_thing(private_medsrv_config_t); + + this->public.backend.create_peer_cfg_enumerator = (enumerator_t*(*)(backend_t*, identification_t *me, identification_t *other))create_peer_cfg_enumerator; + this->public.backend.create_ike_cfg_enumerator = (enumerator_t*(*)(backend_t*, host_t *me, host_t *other))create_ike_cfg_enumerator; + this->public.backend.get_peer_cfg_by_name = (peer_cfg_t* (*)(backend_t*,char*))get_peer_cfg_by_name; + this->public.destroy = (void(*)(medsrv_config_t*))destroy; + + this->db = db; + this->rekey = lib->settings->get_time(lib->settings, "medsrv.rekey", 1200); + this->dpd = lib->settings->get_time(lib->settings, "medsrv.dpd", 300); + this->ike = ike_cfg_create(FALSE, FALSE, + "0.0.0.0", IKEV2_UDP_PORT, "0.0.0.0", IKEV2_UDP_PORT); + this->ike->add_proposal(this->ike, proposal_create_default(PROTO_IKE)); + + return &this->public; +} + diff --git a/src/libcharon/plugins/medsrv/medsrv_config.h b/src/libcharon/plugins/medsrv/medsrv_config.h new file mode 100644 index 000000000..fc8b0e972 --- /dev/null +++ b/src/libcharon/plugins/medsrv/medsrv_config.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup medsrv_config_i medsrv_config + * @{ @ingroup medsrv + */ + +#ifndef MEDSRV_CONFIG_H_ +#define MEDSRV_CONFIG_H_ + +#include <config/backend.h> +#include <database/database.h> + +typedef struct medsrv_config_t medsrv_config_t; + +/** + * Mediation server configuration backend. + */ +struct medsrv_config_t { + + /** + * Implements backend_t interface + */ + backend_t backend; + + /** + * Destroy the backend. + */ + void (*destroy)(medsrv_config_t *this); +}; + +/** + * Create a medsrv_config backend instance. + * + * @param db underlying database + * @return backend instance + */ +medsrv_config_t *medsrv_config_create(database_t *db); + +#endif /** MEDSRV_CONFIG_H_ @}*/ diff --git a/src/libcharon/plugins/medsrv/medsrv_creds.c b/src/libcharon/plugins/medsrv/medsrv_creds.c new file mode 100644 index 000000000..8d1643908 --- /dev/null +++ b/src/libcharon/plugins/medsrv/medsrv_creds.c @@ -0,0 +1,163 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "medsrv_creds.h" + +#include <daemon.h> +#include <library.h> +#include <utils/enumerator.h> + +typedef struct private_medsrv_creds_t private_medsrv_creds_t; + +/** + * Private data of an medsrv_creds_t object + */ +struct private_medsrv_creds_t { + + /** + * Public part + */ + medsrv_creds_t public; + + /** + * underlying database handle + */ + database_t *db; +}; + +/** + * enumerator over certificates + */ +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** inner SQL enumerator */ + enumerator_t *inner; + /** currently enumerated cert */ + certificate_t *current; + /** type of requested key */ + key_type_t type; +} cert_enumerator_t; + +/** + * Implementation of cert_enumerator_t.public.enumerate + */ +static bool cert_enumerator_enumerate(cert_enumerator_t *this, + certificate_t **cert) +{ + certificate_t *trusted; + public_key_t *public; + chunk_t chunk; + + DESTROY_IF(this->current); + while (this->inner->enumerate(this->inner, &chunk)) + { + public = lib->creds->create(lib->creds, CRED_PUBLIC_KEY, KEY_ANY, + BUILD_BLOB_ASN1_DER, chunk, + BUILD_END); + if (public) + { + if (this->type == KEY_ANY || this->type == public->get_type(public)) + { + trusted = lib->creds->create(lib->creds, + CRED_CERTIFICATE, CERT_TRUSTED_PUBKEY, + BUILD_PUBLIC_KEY, public, BUILD_END); + public->destroy(public); + if (trusted) + { + *cert = this->current = trusted; + return TRUE; + } + } + else + { + public->destroy(public); + } + } + } + this->current = NULL; + return FALSE; +} + +/** + * Implementation of cert_enumerator_t.public.destroy + */ +static void cert_enumerator_destroy(cert_enumerator_t *this) +{ + DESTROY_IF(this->current); + this->inner->destroy(this->inner); + free(this); +} + +/** + * Implementation of credential_set_t.create_cert_enumerator. + */ +static enumerator_t* create_cert_enumerator(private_medsrv_creds_t *this, + certificate_type_t cert, key_type_t key, + identification_t *id, bool trusted) +{ + cert_enumerator_t *e; + + if ((cert != CERT_TRUSTED_PUBKEY && cert != CERT_ANY) || + id == NULL || id->get_type(id) != ID_KEY_ID) + { + return NULL; + } + + e = malloc_thing(cert_enumerator_t); + e->current = NULL; + e->type = key; + e->public.enumerate = (void*)cert_enumerator_enumerate; + e->public.destroy = (void*)cert_enumerator_destroy; + e->inner = this->db->query(this->db, + "SELECT public_key FROM peer WHERE keyid = ?", + DB_BLOB, id->get_encoding(id), + DB_BLOB); + if (!e->inner) + { + free(e); + return NULL; + } + return &e->public; +} + +/** + * Implementation of backend_t.destroy. + */ +static void destroy(private_medsrv_creds_t *this) +{ + free(this); +} + +/** + * Described in header. + */ +medsrv_creds_t *medsrv_creds_create(database_t *db) +{ + private_medsrv_creds_t *this = malloc_thing(private_medsrv_creds_t); + + this->public.set.create_private_enumerator = (void*)return_null; + this->public.set.create_cert_enumerator = (void*)create_cert_enumerator; + this->public.set.create_shared_enumerator = (void*)return_null; + this->public.set.create_cdp_enumerator = (void*)return_null; + this->public.set.cache_cert = (void*)nop; + + this->public.destroy = (void (*)(medsrv_creds_t*))destroy; + + this->db = db; + + return &this->public; +} + diff --git a/src/libcharon/plugins/medsrv/medsrv_creds.h b/src/libcharon/plugins/medsrv/medsrv_creds.h new file mode 100644 index 000000000..d08adf3bf --- /dev/null +++ b/src/libcharon/plugins/medsrv/medsrv_creds.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2007-2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup medsrv_creds_i medsrv_creds + * @{ @ingroup medsrv + */ + +#ifndef MEDSRV_CREDS_H_ +#define MEDSRV_CREDS_H_ + +#include <credentials/credential_set.h> +#include <database/database.h> + +typedef struct medsrv_creds_t medsrv_creds_t; + +/** + * Mediation credentials database. + */ +struct medsrv_creds_t { + + /** + * Implements credential_set_t interface + */ + credential_set_t set; + + /** + * Destroy the credentials databse. + */ + void (*destroy)(medsrv_creds_t *this); +}; + +/** + * Create the medsrv credentials db. + * + * @param database underlying database + * @return credential set implementation on that database + */ +medsrv_creds_t *medsrv_creds_create(database_t *database); + +#endif /** MEDSRV_CREDS_H_ @}*/ diff --git a/src/libcharon/plugins/medsrv/medsrv_plugin.c b/src/libcharon/plugins/medsrv/medsrv_plugin.c new file mode 100644 index 000000000..262d26d6b --- /dev/null +++ b/src/libcharon/plugins/medsrv/medsrv_plugin.c @@ -0,0 +1,99 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "medsrv_plugin.h" + +#include "medsrv_creds.h" +#include "medsrv_config.h" + +#include <daemon.h> + +typedef struct private_medsrv_plugin_t private_medsrv_plugin_t; + +/** + * private data of medsrv plugin + */ +struct private_medsrv_plugin_t { + + /** + * implements plugin interface + */ + medsrv_plugin_t public; + + /** + * database connection instance + */ + database_t *db; + + /** + * medsrv credential set instance + */ + medsrv_creds_t *creds; + + /** + * medsrv config database + */ + medsrv_config_t *config; +}; + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(private_medsrv_plugin_t *this) +{ + charon->backends->remove_backend(charon->backends, &this->config->backend); + charon->credentials->remove_set(charon->credentials, &this->creds->set); + this->config->destroy(this->config); + this->creds->destroy(this->creds); + this->db->destroy(this->db); + free(this); +} + +/* + * see header file + */ +plugin_t *medsrv_plugin_create() +{ + char *uri; + private_medsrv_plugin_t *this = malloc_thing(private_medsrv_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + uri = lib->settings->get_str(lib->settings, + "medsrv.database", NULL); + if (!uri) + { + DBG1(DBG_CFG, "mediation database URI not defined, skipped"); + free(this); + return NULL; + } + + this->db = lib->db->create(lib->db, uri); + if (this->db == NULL) + { + DBG1(DBG_CFG, "opening mediation server database failed"); + free(this); + return NULL; + } + + this->creds = medsrv_creds_create(this->db); + this->config = medsrv_config_create(this->db); + + charon->credentials->add_set(charon->credentials, &this->creds->set); + charon->backends->add_backend(charon->backends, &this->config->backend); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/medsrv/medsrv_plugin.h b/src/libcharon/plugins/medsrv/medsrv_plugin.h new file mode 100644 index 000000000..8736822ee --- /dev/null +++ b/src/libcharon/plugins/medsrv/medsrv_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup medsrv medsrv + * @ingroup cplugins + * + * @defgroup medsrv_plugin medsrv_plugin + * @{ @ingroup medsrv + */ + +#ifndef MEDSRV_PLUGIN_H_ +#define MEDSRV_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct medsrv_plugin_t medsrv_plugin_t; + +/** + * Mediation server database plugin. + */ +struct medsrv_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** MEDSRV_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/nm/Makefile.am b/src/libcharon/plugins/nm/Makefile.am new file mode 100644 index 000000000..8e12a72be --- /dev/null +++ b/src/libcharon/plugins/nm/Makefile.am @@ -0,0 +1,21 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon ${nm_CFLAGS} + +AM_CFLAGS = -rdynamic \ + -DNM_CA_DIR=\"${nm_ca_dir}\" + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-nm.la +else +plugin_LTLIBRARIES = libstrongswan-nm.la +endif + +libstrongswan_nm_la_SOURCES = \ + nm_plugin.h nm_plugin.c \ + nm_service.h nm_service.c \ + nm_creds.h nm_creds.c \ + nm_handler.h nm_handler.c + +libstrongswan_nm_la_LDFLAGS = -module -avoid-version +libstrongswan_nm_la_LIBADD = ${nm_LIBS} diff --git a/src/libcharon/plugins/nm/Makefile.in b/src/libcharon/plugins/nm/Makefile.in new file mode 100644 index 000000000..c7f288f54 --- /dev/null +++ b/src/libcharon/plugins/nm/Makefile.in @@ -0,0 +1,595 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src/libcharon/plugins/nm +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/config/libtool.m4 \ + $(top_srcdir)/m4/config/ltoptions.m4 \ + $(top_srcdir)/m4/config/ltsugar.m4 \ + $(top_srcdir)/m4/config/ltversion.m4 \ + $(top_srcdir)/m4/config/lt~obsolete.m4 \ + $(top_srcdir)/m4/macros/with.m4 \ + $(top_srcdir)/m4/macros/enable-disable.m4 \ + $(top_srcdir)/configure.in +am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ + $(ACLOCAL_M4) +mkinstalldirs = $(install_sh) -d +CONFIG_CLEAN_FILES = +CONFIG_CLEAN_VPATH_FILES = +am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; +am__vpath_adj = case $$p in \ + $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \ + *) f=$$p;; \ + esac; +am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`; +am__install_max = 40 +am__nobase_strip_setup = \ + srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'` +am__nobase_strip = \ + for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||" +am__nobase_list = $(am__nobase_strip_setup); \ + for p in $$list; do echo "$$p $$p"; done | \ + sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( 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b/src/libcharon/plugins/nm/nm_creds.c new file mode 100644 index 000000000..193838e6b --- /dev/null +++ b/src/libcharon/plugins/nm/nm_creds.c @@ -0,0 +1,447 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "nm_creds.h" + +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> + +#include <daemon.h> +#include <threading/rwlock.h> +#include <credentials/certificates/x509.h> + +typedef struct private_nm_creds_t private_nm_creds_t; + +/** + * private data of nm_creds + */ +struct private_nm_creds_t { + + /** + * public functions + */ + nm_creds_t public; + + /** + * List of trusted certificates, certificate_t* + */ + linked_list_t *certs; + + /** + * User name + */ + identification_t *user; + + /** + * User password + */ + char *pass; + + /** + * users certificate + */ + certificate_t *usercert; + + /** + * users private key + */ + private_key_t *key; + + /** + * read/write lock + */ + rwlock_t *lock; +}; + +/** + * Enumerator for user certificate + */ +static enumerator_t *create_usercert_enumerator(private_nm_creds_t *this, + certificate_type_t cert, key_type_t key) +{ + public_key_t *public; + + if (cert != CERT_ANY && cert != this->usercert->get_type(this->usercert)) + { + return NULL; + } + if (key != KEY_ANY) + { + public = this->usercert->get_public_key(this->usercert); + if (!public) + { + return NULL; + } + if (public->get_type(public) != key) + { + public->destroy(public); + return NULL; + } + public->destroy(public); + } + this->lock->read_lock(this->lock); + return enumerator_create_cleaner( + enumerator_create_single(this->usercert, NULL), + (void*)this->lock->unlock, this->lock); +} + +/** + * CA certificate enumerator data + */ +typedef struct { + /** ref to credential credential store */ + private_nm_creds_t *this; + /** type of key we are looking for */ + key_type_t key; + /** CA certificate ID */ + identification_t *id; +} cert_data_t; + +/** + * Destroy CA certificate enumerator data + */ +static void cert_data_destroy(cert_data_t *data) +{ + data->this->lock->unlock(data->this->lock); + free(data); +} + +/** + * Filter function for certificates enumerator + */ +static bool cert_filter(cert_data_t *data, certificate_t **in, + certificate_t **out) +{ + certificate_t *cert = *in; + public_key_t *public; + + public = cert->get_public_key(cert); + if (!public) + { + return FALSE; + } + if (data->key != KEY_ANY && public->get_type(public) != data->key) + { + public->destroy(public); + return FALSE; + } + if (data->id && data->id->get_type(data->id) == ID_KEY_ID && + public->has_fingerprint(public, data->id->get_encoding(data->id))) + { + public->destroy(public); + *out = cert; + return TRUE; + } + public->destroy(public); + if (data->id && !cert->has_subject(cert, data->id)) + { + return FALSE; + } + *out = cert; + return TRUE; +} + +/** + * Create enumerator for trusted certificates + */ +static enumerator_t *create_trusted_cert_enumerator(private_nm_creds_t *this, + key_type_t key, identification_t *id) +{ + cert_data_t *data = malloc_thing(cert_data_t); + + data->this = this; + data->id = id; + data->key = key; + + this->lock->read_lock(this->lock); + return enumerator_create_filter( + this->certs->create_enumerator(this->certs), + (void*)cert_filter, data, (void*)cert_data_destroy); +} + +/** + * Implements credential_set_t.create_cert_enumerator + */ +static enumerator_t* create_cert_enumerator(private_nm_creds_t *this, + certificate_type_t cert, key_type_t key, + identification_t *id, bool trusted) +{ + if (id && this->usercert && + id->equals(id, this->usercert->get_subject(this->usercert))) + { + return create_usercert_enumerator(this, cert, key); + } + if (cert == CERT_X509 || cert == CERT_ANY) + { + return create_trusted_cert_enumerator(this, key, id); + } + return NULL; +} + +/** + * Implements credential_set_t.create_cert_enumerator + */ +static enumerator_t* create_private_enumerator(private_nm_creds_t *this, + key_type_t type, identification_t *id) +{ + if (this->key == NULL) + { + return NULL; + } + if (type != KEY_ANY && type != this->key->get_type(this->key)) + { + return NULL; + } + if (id && id->get_type(id) != ID_ANY) + { + if (id->get_type(id) != ID_KEY_ID || + !this->key->has_fingerprint(this->key, id->get_encoding(id))) + { + return NULL; + } + } + this->lock->read_lock(this->lock); + return enumerator_create_cleaner(enumerator_create_single(this->key, NULL), + (void*)this->lock->unlock, this->lock); +} + +/** + * shared key enumerator implementation + */ +typedef struct { + enumerator_t public; + private_nm_creds_t *this; + shared_key_t *key; + bool done; +} shared_enumerator_t; + +/** + * enumerate function for shared enumerator + */ +static bool shared_enumerate(shared_enumerator_t *this, shared_key_t **key, + id_match_t *me, id_match_t *other) +{ + if (this->done) + { + return FALSE; + } + *key = this->key; + *me = ID_MATCH_PERFECT; + *other = ID_MATCH_ANY; + this->done = TRUE; + return TRUE; +} + +/** + * Destroy function for shared enumerator + */ +static void shared_destroy(shared_enumerator_t *this) +{ + this->key->destroy(this->key); + this->this->lock->unlock(this->this->lock); + free(this); +} +/** + * Implements credential_set_t.create_cert_enumerator + */ +static enumerator_t* create_shared_enumerator(private_nm_creds_t *this, + shared_key_type_t type, identification_t *me, + identification_t *other) +{ + shared_enumerator_t *enumerator; + + if (!this->pass || !this->user) + { + return NULL; + } + if (type != SHARED_EAP && type != SHARED_IKE) + { + return NULL; + } + if (me && !me->equals(me, this->user)) + { + return NULL; + } + + enumerator = malloc_thing(shared_enumerator_t); + enumerator->public.enumerate = (void*)shared_enumerate; + enumerator->public.destroy = (void*)shared_destroy; + enumerator->this = this; + enumerator->done = FALSE; + this->lock->read_lock(this->lock); + enumerator->key = shared_key_create(type, + chunk_clone(chunk_create(this->pass, + strlen(this->pass)))); + return &enumerator->public; +} + +/** + * Implementation of nm_creds_t.add_certificate + */ +static void add_certificate(private_nm_creds_t *this, certificate_t *cert) +{ + this->lock->write_lock(this->lock); + this->certs->insert_last(this->certs, cert); + this->lock->unlock(this->lock); +} + +/** + * Load a certificate file + */ +static void load_ca_file(private_nm_creds_t *this, char *file) +{ + certificate_t *cert; + + /* We add the CA constraint, as many CAs miss it */ + cert = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509, + BUILD_FROM_FILE, file, BUILD_END); + if (!cert) + { + DBG1(DBG_CFG, "loading CA certificate '%s' failed", file); + } + else + { + DBG2(DBG_CFG, "loaded CA certificate '%Y'", cert->get_subject(cert)); + x509_t *x509 = (x509_t*)cert; + if (!(x509->get_flags(x509) & X509_SELF_SIGNED)) + { + DBG1(DBG_CFG, "%Y is not self signed", cert->get_subject(cert)); + } + this->certs->insert_last(this->certs, cert); + } +} + +/** + * Implementation of nm_creds_t.load_ca_dir + */ +static void load_ca_dir(private_nm_creds_t *this, char *dir) +{ + enumerator_t *enumerator; + char *rel, *abs; + struct stat st; + + enumerator = enumerator_create_directory(dir); + if (enumerator) + { + while (enumerator->enumerate(enumerator, &rel, &abs, &st)) + { + /* skip '.', '..' and hidden files */ + if (rel[0] != '.') + { + if (S_ISDIR(st.st_mode)) + { + load_ca_dir(this, abs); + } + else if (S_ISREG(st.st_mode)) + { + load_ca_file(this, abs); + } + } + } + enumerator->destroy(enumerator); + } +} + +/** + * Implementation of nm_creds_t.set_password + */ +static void set_username_password(private_nm_creds_t *this, identification_t *id, + char *password) +{ + this->lock->write_lock(this->lock); + DESTROY_IF(this->user); + this->user = id->clone(id); + free(this->pass); + this->pass = password ? strdup(password) : NULL; + this->lock->unlock(this->lock); +} + +/** + * Implementation of nm_creds_t.set_cert_and_key + */ +static void set_cert_and_key(private_nm_creds_t *this, certificate_t *cert, + private_key_t *key) +{ + this->lock->write_lock(this->lock); + DESTROY_IF(this->key); + DESTROY_IF(this->usercert); + this->key = key; + this->usercert = cert; + this->lock->unlock(this->lock); +} + +/** + * Implementation of nm_creds_t.clear + */ +static void clear(private_nm_creds_t *this) +{ + certificate_t *cert; + + while (this->certs->remove_last(this->certs, (void**)&cert) == SUCCESS) + { + cert->destroy(cert); + } + DESTROY_IF(this->user); + free(this->pass); + DESTROY_IF(this->usercert); + DESTROY_IF(this->key); + this->key = NULL; + this->usercert = NULL; + this->pass = NULL; + this->user = NULL; +} + +/** + * Implementation of nm_creds_t.destroy + */ +static void destroy(private_nm_creds_t *this) +{ + clear(this); + this->certs->destroy(this->certs); + this->lock->destroy(this->lock); + free(this); +} + +/* + * see header file + */ +nm_creds_t *nm_creds_create() +{ + private_nm_creds_t *this = malloc_thing(private_nm_creds_t); + + this->public.set.create_private_enumerator = (void*)create_private_enumerator; + this->public.set.create_cert_enumerator = (void*)create_cert_enumerator; + this->public.set.create_shared_enumerator = (void*)create_shared_enumerator; + this->public.set.create_cdp_enumerator = (void*)return_null; + this->public.set.cache_cert = (void*)nop; + this->public.add_certificate = (void(*)(nm_creds_t*, certificate_t *cert))add_certificate; + this->public.load_ca_dir = (void(*)(nm_creds_t*, char *dir))load_ca_dir; + this->public.set_username_password = (void(*)(nm_creds_t*, identification_t *id, char *password))set_username_password; + this->public.set_cert_and_key = (void(*)(nm_creds_t*, certificate_t *cert, private_key_t *key))set_cert_and_key; + this->public.clear = (void(*)(nm_creds_t*))clear; + this->public.destroy = (void(*)(nm_creds_t*))destroy; + + this->lock = rwlock_create(RWLOCK_TYPE_DEFAULT); + + this->certs = linked_list_create(); + this->user = NULL; + this->pass = NULL; + this->usercert = NULL; + this->key = NULL; + + return &this->public; +} + diff --git a/src/libcharon/plugins/nm/nm_creds.h b/src/libcharon/plugins/nm/nm_creds.h new file mode 100644 index 000000000..b55cff31e --- /dev/null +++ b/src/libcharon/plugins/nm/nm_creds.h @@ -0,0 +1,85 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup nm_creds nm_creds + * @{ @ingroup nm + */ + +#ifndef NM_CREDS_H_ +#define NM_CREDS_H_ + +#include <credentials/keys/private_key.h> +#include <credentials/credential_set.h> + +typedef struct nm_creds_t nm_creds_t; + +/** + * NetworkManager credentials helper. + */ +struct nm_creds_t { + + /** + * Implements credential_set_t + */ + credential_set_t set; + + /** + * Add a trusted gateway certificate to serve by this set. + * + * @param cert certificate to serve + */ + void (*add_certificate)(nm_creds_t *this, certificate_t *cert); + + /** + * Load CA certificates recursively from a directory. + * + * @param dir directory to PEM encoded CA certificates + */ + void (*load_ca_dir)(nm_creds_t *this, char *dir); + + /** + * Set the username/password for authentication. + * + * @param id ID of the user + * @param password password to use for authentication + */ + void (*set_username_password)(nm_creds_t *this, identification_t *id, + char *password); + /** + * Set the certificate and private key to use for client authentication. + * + * @param cert client certificate + * @param key associated private key + */ + void (*set_cert_and_key)(nm_creds_t *this, certificate_t *cert, + private_key_t *key); + /** + * Clear the stored credentials. + */ + void (*clear)(nm_creds_t *this); + + /** + * Destroy a nm_creds instance. + */ + void (*destroy)(nm_creds_t *this); +}; + +/** + * Create a nm_creds instance. + */ +nm_creds_t *nm_creds_create(); + +#endif /** NM_CREDS_H_ @}*/ diff --git a/src/libcharon/plugins/nm/nm_handler.c b/src/libcharon/plugins/nm/nm_handler.c new file mode 100644 index 000000000..eacb54dda --- /dev/null +++ b/src/libcharon/plugins/nm/nm_handler.c @@ -0,0 +1,193 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "nm_handler.h" + +#include <daemon.h> + +typedef struct private_nm_handler_t private_nm_handler_t; + +/** + * Private data of an nm_handler_t object. + */ +struct private_nm_handler_t { + + /** + * Public nm_handler_t interface. + */ + nm_handler_t public; + + /** + * list of received DNS server attributes, pointer to 4 byte data + */ + linked_list_t *dns; + + /** + * list of received NBNS server attributes, pointer to 4 byte data + */ + linked_list_t *nbns; +}; + +/** + * Implementation of attribute_handler_t.handle + */ +static bool handle(private_nm_handler_t *this, identification_t *server, + configuration_attribute_type_t type, chunk_t data) +{ + linked_list_t *list; + + switch (type) + { + case INTERNAL_IP4_DNS: + list = this->dns; + break; + case INTERNAL_IP4_NBNS: + list = this->nbns; + break; + default: + return FALSE; + } + if (data.len != 4) + { + return FALSE; + } + list->insert_last(list, chunk_clone(data).ptr); + return TRUE; +} + +/** + * Implementation of create_attribute_enumerator().enumerate() for WINS + */ +static bool enumerate_nbns(enumerator_t *this, + configuration_attribute_type_t *type, chunk_t *data) +{ + *type = INTERNAL_IP4_NBNS; + *data = chunk_empty; + /* done */ + this->enumerate = (void*)return_false; + return TRUE; +} + +/** + * Implementation of create_attribute_enumerator().enumerate() for DNS + */ +static bool enumerate_dns(enumerator_t *this, + configuration_attribute_type_t *type, chunk_t *data) +{ + *type = INTERNAL_IP4_DNS; + *data = chunk_empty; + /* enumerate WINS server as next attribute ... */ + this->enumerate = (void*)enumerate_nbns; + return TRUE; +} + +/** + * Implementation of attribute_handler_t.create_attribute_enumerator + */ +static enumerator_t* create_attribute_enumerator(private_nm_handler_t *this, + identification_t *server, host_t *vip) +{ + if (vip && vip->get_family(vip) == AF_INET) + { /* no IPv6 attributes yet */ + enumerator_t *enumerator = malloc_thing(enumerator_t); + /* enumerate DNS attribute first ... */ + enumerator->enumerate = (void*)enumerate_dns; + enumerator->destroy = (void*)free; + + return enumerator; + } + return enumerator_create_empty(); +} + +/** + * convert plain byte ptrs to handy chunk during enumeration + */ +static bool filter_chunks(void* null, char **in, chunk_t *out) +{ + *out = chunk_create(*in, 4); + return TRUE; +} + +/** + * Implementation of nm_handler_t.create_enumerator + */ +static enumerator_t* create_enumerator(private_nm_handler_t *this, + configuration_attribute_type_t type) +{ + linked_list_t *list; + + switch (type) + { + case INTERNAL_IP4_DNS: + list = this->dns; + break; + case INTERNAL_IP4_NBNS: + list = this->nbns; + break; + default: + return enumerator_create_empty(); + } + return enumerator_create_filter(list->create_enumerator(list), + (void*)filter_chunks, NULL, NULL); +} + +/** + * Implementation of nm_handler_t.reset + */ +static void reset(private_nm_handler_t *this) +{ + void *data; + + while (this->dns->remove_last(this->dns, (void**)&data) == SUCCESS) + { + free(data); + } + while (this->nbns->remove_last(this->nbns, (void**)&data) == SUCCESS) + { + free(data); + } +} + +/** + * Implementation of nm_handler_t.destroy. + */ +static void destroy(private_nm_handler_t *this) +{ + reset(this); + this->dns->destroy(this->dns); + this->nbns->destroy(this->nbns); + free(this); +} + +/** + * See header + */ +nm_handler_t *nm_handler_create() +{ + private_nm_handler_t *this = malloc_thing(private_nm_handler_t); + + this->public.handler.handle = (bool(*)(attribute_handler_t*, identification_t*, configuration_attribute_type_t, chunk_t))handle; + this->public.handler.release = (void(*)(attribute_handler_t*, identification_t*, configuration_attribute_type_t, chunk_t))nop; + this->public.handler.create_attribute_enumerator = (enumerator_t*(*)(attribute_handler_t*, identification_t *server, host_t *vip))create_attribute_enumerator; + this->public.create_enumerator = (enumerator_t*(*)(nm_handler_t*, configuration_attribute_type_t type))create_enumerator; + this->public.reset = (void(*)(nm_handler_t*))reset; + this->public.destroy = (void(*)(nm_handler_t*))destroy; + + this->dns = linked_list_create(); + this->nbns = linked_list_create(); + + return &this->public; +} + diff --git a/src/libcharon/plugins/nm/nm_handler.h b/src/libcharon/plugins/nm/nm_handler.h new file mode 100644 index 000000000..bb35ce767 --- /dev/null +++ b/src/libcharon/plugins/nm/nm_handler.h @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup nm_handler nm_handler + * @{ @ingroup nm + */ + +#ifndef NM_HANDLER_H_ +#define NM_HANDLER_H_ + +#include <attributes/attribute_handler.h> + +typedef struct nm_handler_t nm_handler_t; + +/** + * Handles DNS/NBNS attributes to pass to NM. + */ +struct nm_handler_t { + + /** + * Implements attribute handler interface + */ + attribute_handler_t handler; + + /** + * Create an enumerator over received attributes of a given kind. + * + * @param type type of attributes to enumerate + * @return enumerator over attribute data (chunk_t) + */ + enumerator_t* (*create_enumerator)(nm_handler_t *this, + configuration_attribute_type_t type); + /** + * Reset state, flush all received attributes. + */ + void (*reset)(nm_handler_t *this); + + /** + * Destroy a nm_handler_t. + */ + void (*destroy)(nm_handler_t *this); +}; + +/** + * Create a nm_handler instance. + */ +nm_handler_t *nm_handler_create(); + +#endif /** NM_HANDLER_H_ @}*/ diff --git a/src/libcharon/plugins/nm/nm_plugin.c b/src/libcharon/plugins/nm/nm_plugin.c new file mode 100644 index 000000000..6087f6589 --- /dev/null +++ b/src/libcharon/plugins/nm/nm_plugin.c @@ -0,0 +1,130 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "nm_plugin.h" +#include "nm_service.h" +#include "nm_creds.h" +#include "nm_handler.h" + +#include <hydra.h> +#include <daemon.h> +#include <processing/jobs/callback_job.h> + +#define CAP_DAC_OVERRIDE 1 + +typedef struct private_nm_plugin_t private_nm_plugin_t; + +/** + * private data of nm plugin + */ +struct private_nm_plugin_t { + + /** + * implements plugin interface + */ + nm_plugin_t public; + + /** + * NetworkManager service (VPNPlugin) + */ + NMStrongswanPlugin *plugin; + + /** + * Glib main loop for a thread, handles DBUS calls + */ + GMainLoop *loop; + + /** + * credential set registered at the daemon + */ + nm_creds_t *creds; + + /** + * attribute handler regeisterd at the daemon + */ + nm_handler_t *handler; +}; + +/** + * NM plugin processing routine, creates and handles NMVPNPlugin + */ +static job_requeue_t run(private_nm_plugin_t *this) +{ + this->loop = g_main_loop_new(NULL, FALSE); + g_main_loop_run(this->loop); + return JOB_REQUEUE_NONE; +} + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(private_nm_plugin_t *this) +{ + if (this->loop) + { + if (g_main_loop_is_running(this->loop)) + { + g_main_loop_quit(this->loop); + } + g_main_loop_unref(this->loop); + } + if (this->plugin) + { + g_object_unref(this->plugin); + } + charon->credentials->remove_set(charon->credentials, &this->creds->set); + hydra->attributes->remove_handler(hydra->attributes, &this->handler->handler); + this->creds->destroy(this->creds); + this->handler->destroy(this->handler); + free(this); +} + +/* + * see header file + */ +plugin_t *nm_plugin_create() +{ + private_nm_plugin_t *this = malloc_thing(private_nm_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + this->loop = NULL; + g_type_init (); + if (!g_thread_supported()) + { + g_thread_init(NULL); + } + + this->creds = nm_creds_create(); + this->handler = nm_handler_create(); + hydra->attributes->add_handler(hydra->attributes, &this->handler->handler); + charon->credentials->add_set(charon->credentials, &this->creds->set); + this->plugin = nm_strongswan_plugin_new(this->creds, this->handler); + if (!this->plugin) + { + DBG1(DBG_CFG, "DBUS binding failed"); + destroy(this); + return NULL; + } + + /* bypass file permissions to read from users ssh-agent */ + charon->keep_cap(charon, CAP_DAC_OVERRIDE); + + charon->processor->queue_job(charon->processor, + (job_t*)callback_job_create((callback_job_cb_t)run, this, NULL, NULL)); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/nm/nm_plugin.h b/src/libcharon/plugins/nm/nm_plugin.h new file mode 100644 index 000000000..b64b3edf6 --- /dev/null +++ b/src/libcharon/plugins/nm/nm_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup nm nm + * @ingroup cplugins + * + * @defgroup nm_plugin nm_plugin + * @{ @ingroup nm + */ + +#ifndef NM_PLUGIN_H_ +#define NM_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct nm_plugin_t nm_plugin_t; + +/** + * NetworkManager integration plugin. + */ +struct nm_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** NM_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/nm/nm_service.c b/src/libcharon/plugins/nm/nm_service.c new file mode 100644 index 000000000..cdf7dc962 --- /dev/null +++ b/src/libcharon/plugins/nm/nm_service.c @@ -0,0 +1,629 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <nm-setting-vpn.h> +#include <nm-setting-connection.h> +#include "nm_service.h" + +#include <daemon.h> +#include <utils/host.h> +#include <utils/identification.h> +#include <config/peer_cfg.h> +#include <credentials/certificates/x509.h> + +#include <stdio.h> + +G_DEFINE_TYPE(NMStrongswanPlugin, nm_strongswan_plugin, NM_TYPE_VPN_PLUGIN) + +/** + * Private data of NMStrongswanPlugin + */ +typedef struct { + /* implements bus listener interface */ + listener_t listener; + /* IKE_SA we are listening on */ + ike_sa_t *ike_sa; + /* backref to public plugin */ + NMVPNPlugin *plugin; + /* credentials to use for authentication */ + nm_creds_t *creds; + /* attribute handler for DNS/NBNS server information */ + nm_handler_t *handler; + /* name of the connection */ + char *name; +} NMStrongswanPluginPrivate; + +#define NM_STRONGSWAN_PLUGIN_GET_PRIVATE(o) \ + (G_TYPE_INSTANCE_GET_PRIVATE ((o), \ + NM_TYPE_STRONGSWAN_PLUGIN, NMStrongswanPluginPrivate)) + +/** + * convert enumerated handler chunks to a UINT_ARRAY GValue + */ +static GValue* handler_to_val(nm_handler_t *handler, + configuration_attribute_type_t type) +{ + GValue *val; + GArray *array; + enumerator_t *enumerator; + chunk_t chunk; + + enumerator = handler->create_enumerator(handler, type); + array = g_array_new (FALSE, TRUE, sizeof (guint32)); + while (enumerator->enumerate(enumerator, &chunk)) + { + g_array_append_val (array, *(u_int32_t*)chunk.ptr); + } + enumerator->destroy(enumerator); + val = g_slice_new0 (GValue); + g_value_init (val, DBUS_TYPE_G_UINT_ARRAY); + g_value_set_boxed (val, array); + + return val; +} + +/** + * signal IPv4 config to NM, set connection as established + */ +static void signal_ipv4_config(NMVPNPlugin *plugin, + ike_sa_t *ike_sa, child_sa_t *child_sa) +{ + GValue *val; + GHashTable *config; + host_t *me, *other; + nm_handler_t *handler; + + config = g_hash_table_new(g_str_hash, g_str_equal); + me = ike_sa->get_my_host(ike_sa); + other = ike_sa->get_other_host(ike_sa); + handler = NM_STRONGSWAN_PLUGIN_GET_PRIVATE(plugin)->handler; + + /* NM requires a tundev, but netkey does not use one. Passing an invalid + * iface makes NM complain, but it accepts it without fiddling on eth0. */ + val = g_slice_new0 (GValue); + g_value_init (val, G_TYPE_STRING); + g_value_set_string (val, "none"); + g_hash_table_insert (config, NM_VPN_PLUGIN_IP4_CONFIG_TUNDEV, val); + + val = g_slice_new0(GValue); + g_value_init(val, G_TYPE_UINT); + g_value_set_uint(val, *(u_int32_t*)me->get_address(me).ptr); + g_hash_table_insert(config, NM_VPN_PLUGIN_IP4_CONFIG_ADDRESS, val); + + val = g_slice_new0(GValue); + g_value_init(val, G_TYPE_UINT); + g_value_set_uint(val, me->get_address(me).len * 8); + g_hash_table_insert(config, NM_VPN_PLUGIN_IP4_CONFIG_PREFIX, val); + + val = handler_to_val(handler, INTERNAL_IP4_DNS); + g_hash_table_insert(config, NM_VPN_PLUGIN_IP4_CONFIG_DNS, val); + + val = handler_to_val(handler, INTERNAL_IP4_NBNS); + g_hash_table_insert(config, NM_VPN_PLUGIN_IP4_CONFIG_NBNS, val); + + handler->reset(handler); + + nm_vpn_plugin_set_ip4_config(plugin, config); +} + +/** + * signal failure to NM, connecting failed + */ +static void signal_failure(NMVPNPlugin *plugin, NMVPNPluginFailure failure) +{ + nm_handler_t *handler = NM_STRONGSWAN_PLUGIN_GET_PRIVATE(plugin)->handler; + + handler->reset(handler); + + /* TODO: NM does not handle this failure!? */ + nm_vpn_plugin_failure(plugin, failure); + nm_vpn_plugin_set_state(plugin, NM_VPN_SERVICE_STATE_STOPPED); +} + +/** + * Implementation of listener_t.ike_state_change + */ +static bool ike_state_change(listener_t *listener, ike_sa_t *ike_sa, + ike_sa_state_t state) +{ + NMStrongswanPluginPrivate *private = (NMStrongswanPluginPrivate*)listener; + + if (private->ike_sa == ike_sa && state == IKE_DESTROYING) + { + signal_failure(private->plugin, NM_VPN_PLUGIN_FAILURE_LOGIN_FAILED); + return FALSE; + } + return TRUE; +} + +/** + * Implementation of listener_t.child_state_change + */ +static bool child_state_change(listener_t *listener, ike_sa_t *ike_sa, + child_sa_t *child_sa, child_sa_state_t state) +{ + NMStrongswanPluginPrivate *private = (NMStrongswanPluginPrivate*)listener; + + if (private->ike_sa == ike_sa && state == CHILD_DESTROYING) + { + signal_failure(private->plugin, NM_VPN_PLUGIN_FAILURE_CONNECT_FAILED); + return FALSE; + } + return TRUE; +} + +/** + * Implementation of listener_t.child_updown + */ +static bool child_updown(listener_t *listener, ike_sa_t *ike_sa, + child_sa_t *child_sa, bool up) +{ + NMStrongswanPluginPrivate *private = (NMStrongswanPluginPrivate*)listener; + + if (private->ike_sa == ike_sa) + { + if (up) + { /* disable initiate-failure-detection hooks */ + private->listener.ike_state_change = NULL; + private->listener.child_state_change = NULL; + signal_ipv4_config(private->plugin, ike_sa, child_sa); + } + else + { + signal_failure(private->plugin, NM_VPN_PLUGIN_FAILURE_CONNECT_FAILED); + return FALSE; + } + } + return TRUE; +} + +/** + * Implementation of listener_t.ike_rekey + */ +static bool ike_rekey(listener_t *listener, ike_sa_t *old, ike_sa_t *new) +{ + NMStrongswanPluginPrivate *private = (NMStrongswanPluginPrivate*)listener; + + if (private->ike_sa == old) + { /* follow a rekeyed IKE_SA */ + private->ike_sa = new; + } + return TRUE; +} + +/** + * Connect function called from NM via DBUS + */ +static gboolean connect_(NMVPNPlugin *plugin, NMConnection *connection, + GError **err) +{ + NMStrongswanPluginPrivate *priv; + NMSettingConnection *conn; + NMSettingVPN *vpn; + identification_t *user = NULL, *gateway = NULL; + const char *address, *str; + bool virtual, encap, ipcomp; + ike_cfg_t *ike_cfg; + peer_cfg_t *peer_cfg; + child_cfg_t *child_cfg; + traffic_selector_t *ts; + ike_sa_t *ike_sa; + auth_cfg_t *auth; + auth_class_t auth_class = AUTH_CLASS_EAP; + certificate_t *cert = NULL; + x509_t *x509; + bool agent = FALSE; + lifetime_cfg_t lifetime = { + .time = { + .life = 10800 /* 3h */, + .rekey = 10200 /* 2h50min */, + .jitter = 300 /* 5min */ + } + }; + + /** + * Read parameters + */ + priv = NM_STRONGSWAN_PLUGIN_GET_PRIVATE(plugin); + conn = NM_SETTING_CONNECTION(nm_connection_get_setting(connection, + NM_TYPE_SETTING_CONNECTION)); + vpn = NM_SETTING_VPN(nm_connection_get_setting(connection, + NM_TYPE_SETTING_VPN)); + if (priv->name) + { + free(priv->name); + } + priv->name = strdup(nm_setting_connection_get_id(conn)); + DBG1(DBG_CFG, "received initiate for NetworkManager connection %s", + priv->name); + DBG4(DBG_CFG, "%s", + nm_setting_to_string(NM_SETTING(vpn))); + address = nm_setting_vpn_get_data_item(vpn, "address"); + if (!address || !*address) + { + g_set_error(err, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS, + "Gateway address missing."); + return FALSE; + } + str = nm_setting_vpn_get_data_item(vpn, "virtual"); + virtual = str && streq(str, "yes"); + str = nm_setting_vpn_get_data_item(vpn, "encap"); + encap = str && streq(str, "yes"); + str = nm_setting_vpn_get_data_item(vpn, "ipcomp"); + ipcomp = str && streq(str, "yes"); + str = nm_setting_vpn_get_data_item(vpn, "method"); + if (str) + { + if (streq(str, "psk")) + { + auth_class = AUTH_CLASS_PSK; + } + else if (streq(str, "agent")) + { + auth_class = AUTH_CLASS_PUBKEY; + agent = TRUE; + } + else if (streq(str, "key")) + { + auth_class = AUTH_CLASS_PUBKEY; + } + } + + /** + * Register credentials + */ + priv->creds->clear(priv->creds); + + /* gateway/CA cert */ + str = nm_setting_vpn_get_data_item(vpn, "certificate"); + if (str) + { + cert = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509, + BUILD_FROM_FILE, str, BUILD_END); + if (!cert) + { + g_set_error(err, NM_VPN_PLUGIN_ERROR, + NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS, + "Loading gateway certificate failed."); + return FALSE; + } + priv->creds->add_certificate(priv->creds, cert); + + x509 = (x509_t*)cert; + if (!(x509->get_flags(x509) & X509_CA)) + { /* For a gateway certificate, we use the cert subject as identity. */ + gateway = cert->get_subject(cert); + gateway = gateway->clone(gateway); + DBG1(DBG_CFG, "using gateway certificate, identity '%Y'", gateway); + } + } + else + { + /* no certificate defined, fall back to system-wide CA certificates */ + priv->creds->load_ca_dir(priv->creds, NM_CA_DIR); + } + if (!gateway) + { + /* If the user configured a CA certificate, we use the IP/DNS + * of the gateway as its identity. This identity will be used for + * certificate lookup and requires the configured IP/DNS to be + * included in the gateway certificate. */ + gateway = identification_create_from_string((char*)address); + DBG1(DBG_CFG, "using CA certificate, gateway identity '%Y'", gateway); + } + + if (auth_class == AUTH_CLASS_EAP) + { + /* username/password authentication ... */ + str = nm_setting_vpn_get_data_item(vpn, "user"); + if (str) + { + user = identification_create_from_string((char*)str); + str = nm_setting_vpn_get_secret(vpn, "password"); + priv->creds->set_username_password(priv->creds, user, (char*)str); + } + } + + if (auth_class == AUTH_CLASS_PUBKEY) + { + /* ... or certificate/private key authenitcation */ + str = nm_setting_vpn_get_data_item(vpn, "usercert"); + if (str) + { + public_key_t *public; + private_key_t *private = NULL; + + cert = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509, + BUILD_FROM_FILE, str, BUILD_END); + if (!cert) + { + g_set_error(err, NM_VPN_PLUGIN_ERROR, + NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS, + "Loading peer certificate failed."); + gateway->destroy(gateway); + return FALSE; + } + /* try agent */ + str = nm_setting_vpn_get_secret(vpn, "agent"); + if (agent && str) + { + public = cert->get_public_key(cert); + if (public) + { + private = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, + public->get_type(public), + BUILD_AGENT_SOCKET, str, + BUILD_PUBLIC_KEY, public, + BUILD_END); + public->destroy(public); + } + if (!private) + { + g_set_error(err, NM_VPN_PLUGIN_ERROR, + NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS, + "Connecting to SSH agent failed."); + } + } + /* ... or key file */ + str = nm_setting_vpn_get_data_item(vpn, "userkey"); + if (!agent && str) + { + chunk_t secret; + + secret.ptr = (char*)nm_setting_vpn_get_secret(vpn, "password"); + if (secret.ptr) + { + secret.len = strlen(secret.ptr); + } + private = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, + KEY_RSA, BUILD_FROM_FILE, str, + BUILD_PASSPHRASE, secret, BUILD_END); + if (!private) + { + g_set_error(err, NM_VPN_PLUGIN_ERROR, + NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS, + "Loading private key failed."); + } + } + if (private) + { + user = cert->get_subject(cert); + user = user->clone(user); + priv->creds->set_cert_and_key(priv->creds, cert, private); + } + else + { + DESTROY_IF(cert); + gateway->destroy(gateway); + return FALSE; + } + } + } + + if (!user) + { + g_set_error(err, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS, + "Configuration parameters missing."); + gateway->destroy(gateway); + return FALSE; + } + + /** + * Set up configurations + */ + ike_cfg = ike_cfg_create(TRUE, encap, + "0.0.0.0", IKEV2_UDP_PORT, (char*)address, IKEV2_UDP_PORT); + ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE)); + peer_cfg = peer_cfg_create(priv->name, 2, ike_cfg, + CERT_SEND_IF_ASKED, UNIQUE_REPLACE, 1, /* keyingtries */ + 36000, 0, /* rekey 10h, reauth none */ + 600, 600, /* jitter, over 10min */ + TRUE, 0, /* mobike, DPD */ + virtual ? host_create_from_string("0.0.0.0", 0) : NULL, + NULL, FALSE, NULL, NULL); /* pool, mediation */ + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_AUTH_CLASS, auth_class); + auth->add(auth, AUTH_RULE_IDENTITY, user); + peer_cfg->add_auth_cfg(peer_cfg, auth, TRUE); + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY); + auth->add(auth, AUTH_RULE_IDENTITY, gateway); + peer_cfg->add_auth_cfg(peer_cfg, auth, FALSE); + + child_cfg = child_cfg_create(priv->name, &lifetime, + NULL, TRUE, MODE_TUNNEL, /* updown, hostaccess */ + ACTION_NONE, ACTION_NONE, ipcomp, 0); + child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP)); + ts = traffic_selector_create_dynamic(0, 0, 65535); + child_cfg->add_traffic_selector(child_cfg, TRUE, ts); + ts = traffic_selector_create_from_string(0, TS_IPV4_ADDR_RANGE, + "0.0.0.0", 0, + "255.255.255.255", 65535); + child_cfg->add_traffic_selector(child_cfg, FALSE, ts); + peer_cfg->add_child_cfg(peer_cfg, child_cfg); + + /** + * Prepare IKE_SA + */ + ike_sa = charon->ike_sa_manager->checkout_by_config(charon->ike_sa_manager, + peer_cfg); + if (!ike_sa->get_peer_cfg(ike_sa)) + { + ike_sa->set_peer_cfg(ike_sa, peer_cfg); + } + peer_cfg->destroy(peer_cfg); + + /** + * Register listener, enable initiate-failure-detection hooks + */ + priv->ike_sa = ike_sa; + priv->listener.ike_state_change = ike_state_change; + priv->listener.child_state_change = child_state_change; + charon->bus->add_listener(charon->bus, &priv->listener); + + /** + * Initiate + */ + if (ike_sa->initiate(ike_sa, child_cfg, 0, NULL, NULL) != SUCCESS) + { + charon->bus->remove_listener(charon->bus, &priv->listener); + charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, ike_sa); + + g_set_error(err, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_LAUNCH_FAILED, + "Initiating failed."); + return FALSE; + } + charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa); + return TRUE; +} + +/** + * NeedSecrets called from NM via DBUS + */ +static gboolean need_secrets(NMVPNPlugin *plugin, NMConnection *connection, + char **setting_name, GError **error) +{ + NMSettingVPN *settings; + const char *method, *path; + + settings = NM_SETTING_VPN(nm_connection_get_setting(connection, + NM_TYPE_SETTING_VPN)); + method = nm_setting_vpn_get_data_item(settings, "method"); + if (method) + { + if (streq(method, "eap")) + { + if (nm_setting_vpn_get_secret(settings, "password")) + { + return FALSE; + } + } + else if (streq(method, "agent")) + { + if (nm_setting_vpn_get_secret(settings, "agent")) + { + return FALSE; + } + } + else if (streq(method, "key")) + { + path = nm_setting_vpn_get_data_item(settings, "userkey"); + if (path) + { + private_key_t *key; + chunk_t secret; + + secret.ptr = (char*)nm_setting_vpn_get_secret(settings, "password"); + if (secret.ptr) + { + secret.len = strlen(secret.ptr); + } + /* try to load/decrypt the private key */ + key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, + KEY_RSA, BUILD_FROM_FILE, path, + BUILD_PASSPHRASE, secret, BUILD_END); + if (key) + { + key->destroy(key); + return FALSE; + } + } + } + } + *setting_name = NM_SETTING_VPN_SETTING_NAME; + return TRUE; +} + +/** + * Disconnect called from NM via DBUS + */ +static gboolean disconnect(NMVPNPlugin *plugin, GError **err) +{ + NMStrongswanPluginPrivate *priv = NM_STRONGSWAN_PLUGIN_GET_PRIVATE(plugin); + enumerator_t *enumerator; + ike_sa_t *ike_sa; + u_int id; + + /* our ike_sa pointer might be invalid, lookup sa */ + enumerator = charon->controller->create_ike_sa_enumerator(charon->controller); + while (enumerator->enumerate(enumerator, &ike_sa)) + { + if (priv->ike_sa == ike_sa) + { + id = ike_sa->get_unique_id(ike_sa); + enumerator->destroy(enumerator); + charon->controller->terminate_ike(charon->controller, id, + controller_cb_empty, NULL); + return TRUE; + } + } + enumerator->destroy(enumerator); + + g_set_error(err, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_GENERAL, + "Connection not found."); + return FALSE; +} + +/** + * Initializer + */ +static void nm_strongswan_plugin_init(NMStrongswanPlugin *plugin) +{ + NMStrongswanPluginPrivate *priv; + + priv = NM_STRONGSWAN_PLUGIN_GET_PRIVATE(plugin); + priv->plugin = NM_VPN_PLUGIN(plugin); + memset(&priv->listener.log, 0, sizeof(listener_t)); + priv->listener.child_updown = child_updown; + priv->listener.ike_rekey = ike_rekey; +} + +/** + * Class constructor + */ +static void nm_strongswan_plugin_class_init( + NMStrongswanPluginClass *strongswan_class) +{ + NMVPNPluginClass *parent_class = NM_VPN_PLUGIN_CLASS(strongswan_class); + + g_type_class_add_private(G_OBJECT_CLASS(strongswan_class), + sizeof(NMStrongswanPluginPrivate)); + parent_class->connect = connect_; + parent_class->need_secrets = need_secrets; + parent_class->disconnect = disconnect; +} + +/** + * Object constructor + */ +NMStrongswanPlugin *nm_strongswan_plugin_new(nm_creds_t *creds, + nm_handler_t *handler) +{ + NMStrongswanPlugin *plugin = (NMStrongswanPlugin *)g_object_new ( + NM_TYPE_STRONGSWAN_PLUGIN, + NM_VPN_PLUGIN_DBUS_SERVICE_NAME, NM_DBUS_SERVICE_STRONGSWAN, + NULL); + if (plugin) + { + NMStrongswanPluginPrivate *priv; + + priv = NM_STRONGSWAN_PLUGIN_GET_PRIVATE(plugin); + priv->creds = creds; + priv->handler = handler; + priv->name = NULL; + } + return plugin; +} + diff --git a/src/libcharon/plugins/nm/nm_service.h b/src/libcharon/plugins/nm/nm_service.h new file mode 100644 index 000000000..b00000b6f --- /dev/null +++ b/src/libcharon/plugins/nm/nm_service.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2008-2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup nm_service nm_service + * @{ @ingroup nm + */ + +#ifndef NM_SERVICE_H_ +#define NM_SERVICE_H_ + +#include <glib/gtypes.h> +#include <glib-object.h> +#include <nm-vpn-plugin.h> + +#include "nm_creds.h" +#include "nm_handler.h" + +#define NM_TYPE_STRONGSWAN_PLUGIN (nm_strongswan_plugin_get_type ()) +#define NM_STRONGSWAN_PLUGIN(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_STRONGSWAN_PLUGIN, NMSTRONGSWANPlugin)) +#define NM_STRONGSWAN_PLUGIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_STRONGSWAN_PLUGIN, NMSTRONGSWANPluginClass)) +#define NM_IS_STRONGSWAN_PLUGIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_STRONGSWAN_PLUGIN)) +#define NM_IS_STRONGSWAN_PLUGIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((obj), NM_TYPE_STRONGSWAN_PLUGIN)) +#define NM_STRONGSWAN_PLUGIN_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_STRONGSWAN_PLUGIN, NMSTRONGSWANPluginClass)) + +#define NM_DBUS_SERVICE_STRONGSWAN "org.freedesktop.NetworkManager.strongswan" +#define NM_DBUS_INTERFACE_STRONGSWAN "org.freedesktop.NetworkManager.strongswan" +#define NM_DBUS_PATH_STRONGSWAN "/org/freedesktop/NetworkManager/strongswan" + +typedef struct { + NMVPNPlugin parent; +} NMStrongswanPlugin; + +typedef struct { + NMVPNPluginClass parent; +} NMStrongswanPluginClass; + +GType nm_strongswan_plugin_get_type(void); + +NMStrongswanPlugin *nm_strongswan_plugin_new(nm_creds_t *creds, + nm_handler_t *handler); + +#endif /** NM_SERVICE_H_ @}*/ diff --git a/src/libcharon/plugins/resolve/Makefile.am b/src/libcharon/plugins/resolve/Makefile.am new file mode 100644 index 000000000..f8830d42e --- /dev/null +++ b/src/libcharon/plugins/resolve/Makefile.am @@ -0,0 +1,18 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic \ + -DRESOLV_CONF=\"${resolv_conf}\" + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-resolve.la +else +plugin_LTLIBRARIES = libstrongswan-resolve.la +endif + +libstrongswan_resolve_la_SOURCES = \ + resolve_plugin.h resolve_plugin.c \ + resolve_handler.h resolve_handler.c + +libstrongswan_resolve_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/resolve/Makefile.in b/src/libcharon/plugins/resolve/Makefile.in new file mode 100644 index 000000000..92ee85539 --- /dev/null +++ b/src/libcharon/plugins/resolve/Makefile.in @@ -0,0 +1,591 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src/libcharon/plugins/resolve +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/config/libtool.m4 \ + $(top_srcdir)/m4/config/ltoptions.m4 \ + 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+1,251 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "resolve_handler.h" + +#include <unistd.h> + +#include <daemon.h> +#include <threading/mutex.h> + +typedef struct private_resolve_handler_t private_resolve_handler_t; + +/** + * Private data of an resolve_handler_t object. + */ +struct private_resolve_handler_t { + + /** + * Public resolve_handler_t interface. + */ + resolve_handler_t public; + + /** + * resolv.conf file to use + */ + char *file; + + /** + * Mutex to access file exclusively + */ + mutex_t *mutex; +}; + +/** + * Implementation of attribute_handler_t.handle + */ +static bool handle(private_resolve_handler_t *this, identification_t *server, + configuration_attribute_type_t type, chunk_t data) +{ + FILE *in, *out; + char buf[1024]; + host_t *addr; + size_t len; + bool handled = FALSE; + + switch (type) + { + case INTERNAL_IP4_DNS: + addr = host_create_from_chunk(AF_INET, data, 0); + break; + case INTERNAL_IP6_DNS: + addr = host_create_from_chunk(AF_INET6, data, 0); + break; + default: + return FALSE; + } + + if (!addr || addr->is_anyaddr(addr)) + { + DESTROY_IF(addr); + return FALSE; + } + this->mutex->lock(this->mutex); + + in = fopen(this->file, "r"); + /* allows us to stream from in to out */ + unlink(this->file); + out = fopen(this->file, "w"); + if (out) + { + fprintf(out, "nameserver %H # by strongSwan, from %Y\n", addr, server); + DBG1(DBG_IKE, "installing DNS server %H to %s", addr, this->file); + handled = TRUE; + + /* copy rest of the file */ + if (in) + { + while ((len = fread(buf, 1, sizeof(buf), in))) + { + ignore_result(fwrite(buf, 1, len, out)); + } + } + fclose(out); + } + if (in) + { + fclose(in); + } + this->mutex->unlock(this->mutex); + addr->destroy(addr); + + if (!handled) + { + DBG1(DBG_IKE, "adding DNS server failed", this->file); + } + return handled; +} + +/** + * Implementation of attribute_handler_t.release + */ +static void release(private_resolve_handler_t *this, identification_t *server, + configuration_attribute_type_t type, chunk_t data) +{ + FILE *in, *out; + char line[1024], matcher[512], *pos; + host_t *addr; + int family; + + switch (type) + { + case INTERNAL_IP4_DNS: + family = AF_INET; + break; + case INTERNAL_IP6_DNS: + family = AF_INET6; + break; + default: + return; + } + + this->mutex->lock(this->mutex); + + in = fopen(this->file, "r"); + if (in) + { + /* allows us to stream from in to out */ + unlink(this->file); + out = fopen(this->file, "w"); + if (out) + { + addr = host_create_from_chunk(family, data, 0); + snprintf(matcher, sizeof(matcher), + "nameserver %H # by strongSwan, from %Y\n", + addr, server); + + /* copy all, but matching line */ + while ((pos = fgets(line, sizeof(line), in))) + { + if (strneq(line, matcher, strlen(matcher))) + { + DBG1(DBG_IKE, "removing DNS server %H from %s", + addr, this->file); + } + else + { + fputs(line, out); + } + } + addr->destroy(addr); + fclose(out); + } + fclose(in); + } + + this->mutex->unlock(this->mutex); +} + +/** + * Attribute enumerator implementation + */ +typedef struct { + /** implements enumerator_t interface */ + enumerator_t public; + /** virtual IP we are requesting */ + host_t *vip; +} attribute_enumerator_t; + +/** + * Implementation of create_attribute_enumerator().enumerate() + */ +static bool attribute_enumerate(attribute_enumerator_t *this, + configuration_attribute_type_t *type, chunk_t *data) +{ + switch (this->vip->get_family(this->vip)) + { + case AF_INET: + *type = INTERNAL_IP4_DNS; + break; + case AF_INET6: + *type = INTERNAL_IP6_DNS; + break; + default: + return FALSE; + } + *data = chunk_empty; + /* enumerate only once */ + this->public.enumerate = (void*)return_false; + return TRUE; +} + +/** + * Implementation of attribute_handler_t.create_attribute_enumerator + */ +static enumerator_t* create_attribute_enumerator(private_resolve_handler_t *this, + identification_t *server, host_t *vip) +{ + if (vip) + { + attribute_enumerator_t *enumerator; + + enumerator = malloc_thing(attribute_enumerator_t); + enumerator->public.enumerate = (void*)attribute_enumerate; + enumerator->public.destroy = (void*)free; + enumerator->vip = vip; + + return &enumerator->public; + } + return enumerator_create_empty(); +} + +/** + * Implementation of resolve_handler_t.destroy. + */ +static void destroy(private_resolve_handler_t *this) +{ + this->mutex->destroy(this->mutex); + free(this); +} + +/** + * See header + */ +resolve_handler_t *resolve_handler_create() +{ + private_resolve_handler_t *this = malloc_thing(private_resolve_handler_t); + + this->public.handler.handle = (bool(*)(attribute_handler_t*, identification_t*, configuration_attribute_type_t, chunk_t))handle; + this->public.handler.release = (void(*)(attribute_handler_t*, identification_t*, configuration_attribute_type_t, chunk_t))release; + this->public.handler.create_attribute_enumerator = (enumerator_t*(*)(attribute_handler_t*, identification_t *server, host_t *vip))create_attribute_enumerator; + this->public.destroy = (void(*)(resolve_handler_t*))destroy; + + this->mutex = mutex_create(MUTEX_TYPE_DEFAULT); + this->file = lib->settings->get_str(lib->settings, + "charon.plugins.resolve.file", RESOLV_CONF); + + return &this->public; +} + diff --git a/src/libcharon/plugins/resolve/resolve_handler.h b/src/libcharon/plugins/resolve/resolve_handler.h new file mode 100644 index 000000000..77bf9781c --- /dev/null +++ b/src/libcharon/plugins/resolve/resolve_handler.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup resolve_handler resolve_handler + * @{ @ingroup resolve + */ + +#ifndef RESOLVE_HANDLER_H_ +#define RESOLVE_HANDLER_H_ + +#include <attributes/attribute_handler.h> + +typedef struct resolve_handler_t resolve_handler_t; + +/** + * Handle DNS configuration attributes by mangling a resolv.conf file. + */ +struct resolve_handler_t { + + /** + * Implements the attribute_handler_t interface + */ + attribute_handler_t handler; + + /** + * Destroy a resolve_handler_t. + */ + void (*destroy)(resolve_handler_t *this); +}; + +/** + * Create a resolve_handler instance. + */ +resolve_handler_t *resolve_handler_create(); + +#endif /** RESOLVE_HANDLER_H_ @}*/ diff --git a/src/libcharon/plugins/resolve/resolve_plugin.c b/src/libcharon/plugins/resolve/resolve_plugin.c new file mode 100644 index 000000000..502129593 --- /dev/null +++ b/src/libcharon/plugins/resolve/resolve_plugin.c @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "resolve_plugin.h" +#include "resolve_handler.h" + +#include <hydra.h> + +typedef struct private_resolve_plugin_t private_resolve_plugin_t; + +/** + * private data of resolve plugin + */ +struct private_resolve_plugin_t { + + /** + * implements plugin interface + */ + resolve_plugin_t public; + + /** + * The registerd DNS attribute handler + */ + resolve_handler_t *handler; +}; + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(private_resolve_plugin_t *this) +{ + hydra->attributes->remove_handler(hydra->attributes, &this->handler->handler); + this->handler->destroy(this->handler); + free(this); +} + +/* + * see header file + */ +plugin_t *resolve_plugin_create() +{ + private_resolve_plugin_t *this = malloc_thing(private_resolve_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + this->handler = resolve_handler_create(); + hydra->attributes->add_handler(hydra->attributes, &this->handler->handler); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/resolve/resolve_plugin.h b/src/libcharon/plugins/resolve/resolve_plugin.h new file mode 100644 index 000000000..0148b10d7 --- /dev/null +++ b/src/libcharon/plugins/resolve/resolve_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup resolve resolve + * @ingroup cplugins + * + * @defgroup resolve_plugin resolve_plugin + * @{ @ingroup resolve + */ + +#ifndef RESOLVE_PLUGIN_H_ +#define RESOLVE_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct resolve_plugin_t resolve_plugin_t; + +/** + * Plugin that writes received DNS servers in a resolv.conf file. + */ +struct resolve_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** RESOLVE_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/smp/Makefile.am b/src/libcharon/plugins/smp/Makefile.am new file mode 100644 index 000000000..f17235835 --- /dev/null +++ b/src/libcharon/plugins/smp/Makefile.am @@ -0,0 +1,17 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon ${xml_CFLAGS} + +AM_CFLAGS = -rdynamic -DIPSEC_PIDDIR=\"${piddir}\" + +if MONOLITHIC +noinst_LTLIBRARIES = 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install-pdf install-pdf-am \ + install-pluginLTLIBRARIES install-ps install-ps-am \ + install-strip installcheck installcheck-am installdirs \ + maintainer-clean maintainer-clean-generic mostlyclean \ + mostlyclean-compile mostlyclean-generic mostlyclean-libtool \ + pdf pdf-am ps ps-am tags uninstall uninstall-am \ + uninstall-pluginLTLIBRARIES + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/smp/smp.c b/src/libcharon/plugins/smp/smp.c new file mode 100644 index 000000000..64820eb45 --- /dev/null +++ b/src/libcharon/plugins/smp/smp.c @@ -0,0 +1,768 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <stdlib.h> + +#include "smp.h" + +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/socket.h> +#include <sys/un.h> +#include <unistd.h> +#include <errno.h> +#include <signal.h> +#include <libxml/xmlreader.h> +#include <libxml/xmlwriter.h> + +#include <library.h> +#include <daemon.h> +#include <threading/thread.h> +#include <processing/jobs/callback_job.h> + + +typedef struct private_smp_t private_smp_t; + +/** + * Private data of an smp_t object. + */ +struct private_smp_t { + + /** + * Public part of smp_t object. + */ + smp_t public; + + /** + * XML unix socket fd + */ + int socket; + + /** + * job accepting stroke messages + */ + callback_job_t *job; +}; + +ENUM(ike_sa_state_lower_names, IKE_CREATED, IKE_DELETING, + "created", + "connecting", + "established", + "rekeying", + "deleting", +); + +/** + * write a bool into element + */ +static void write_bool(xmlTextWriterPtr writer, char *element, bool val) +{ + xmlTextWriterWriteElement(writer, element, val ? "true" : "false"); +} + +/** + * write a identification_t into element + */ +static void write_id(xmlTextWriterPtr writer, char *element, identification_t *id) +{ + xmlTextWriterStartElement(writer, element); + switch (id->get_type(id)) + { + { + char *type = ""; + while (TRUE) + { + case ID_ANY: + type = "any"; + break; + case ID_IPV4_ADDR: + type = "ipv4"; + break; + case ID_IPV6_ADDR: + type = "ipv6"; + break; + case ID_FQDN: + type = "fqdn"; + break; + case ID_RFC822_ADDR: + type = "email"; + break; + case ID_DER_ASN1_DN: + type = "asn1dn"; + break; + case ID_DER_ASN1_GN: + type = "asn1gn"; + break; + } + xmlTextWriterWriteAttribute(writer, "type", type); + xmlTextWriterWriteFormatString(writer, "%Y", id); + break; + } + default: + /* TODO: base64 keyid */ + xmlTextWriterWriteAttribute(writer, "type", "keyid"); + break; + } + xmlTextWriterEndElement(writer); +} + +/** + * write a host_t address into an element + */ +static void write_address(xmlTextWriterPtr writer, char *element, host_t *host) +{ + xmlTextWriterStartElement(writer, element); + xmlTextWriterWriteAttribute(writer, "type", + host->get_family(host) == AF_INET ? "ipv4" : "ipv6"); + if (host->is_anyaddr(host)) + { /* do not use %any for XML */ + xmlTextWriterWriteFormatString(writer, "%s", + host->get_family(host) == AF_INET ? "0.0.0.0" : "::"); + } + else + { + xmlTextWriterWriteFormatString(writer, "%H", host); + } + xmlTextWriterEndElement(writer); +} + +/** + * write networks element + */ +static void write_networks(xmlTextWriterPtr writer, char *element, + linked_list_t *list) +{ + enumerator_t *enumerator; + traffic_selector_t *ts; + + xmlTextWriterStartElement(writer, element); + enumerator = list->create_enumerator(list); + while (enumerator->enumerate(enumerator, (void**)&ts)) + { + xmlTextWriterStartElement(writer, "network"); + xmlTextWriterWriteAttribute(writer, "type", + ts->get_type(ts) == TS_IPV4_ADDR_RANGE ? "ipv4" : "ipv6"); + xmlTextWriterWriteFormatString(writer, "%R", ts); + xmlTextWriterEndElement(writer); + } + enumerator->destroy(enumerator); + xmlTextWriterEndElement(writer); +} + +/** + * write a childEnd + */ +static void write_childend(xmlTextWriterPtr writer, child_sa_t *child, bool local) +{ + linked_list_t *list; + + xmlTextWriterWriteFormatElement(writer, "spi", "%lx", + htonl(child->get_spi(child, local))); + list = child->get_traffic_selectors(child, local); + write_networks(writer, "networks", list); +} + +/** + * write a child_sa_t + */ +static void write_child(xmlTextWriterPtr writer, child_sa_t *child) +{ + child_cfg_t *config; + + config = child->get_config(child); + + xmlTextWriterStartElement(writer, "childsa"); + xmlTextWriterWriteFormatElement(writer, "reqid", "%d", + child->get_reqid(child)); + xmlTextWriterWriteFormatElement(writer, "childconfig", "%s", + config->get_name(config)); + xmlTextWriterStartElement(writer, "local"); + write_childend(writer, child, TRUE); + xmlTextWriterEndElement(writer); + xmlTextWriterStartElement(writer, "remote"); + write_childend(writer, child, FALSE); + xmlTextWriterEndElement(writer); + xmlTextWriterEndElement(writer); +} + +/** + * process a ikesalist query request message + */ +static void request_query_ikesa(xmlTextReaderPtr reader, xmlTextWriterPtr writer) +{ + enumerator_t *enumerator; + ike_sa_t *ike_sa; + + /* <ikesalist> */ + xmlTextWriterStartElement(writer, "ikesalist"); + + enumerator = charon->controller->create_ike_sa_enumerator(charon->controller); + while (enumerator->enumerate(enumerator, &ike_sa)) + { + ike_sa_id_t *id; + host_t *local, *remote; + iterator_t *children; + child_sa_t *child_sa; + + id = ike_sa->get_id(ike_sa); + + xmlTextWriterStartElement(writer, "ikesa"); + xmlTextWriterWriteFormatElement(writer, "id", "%d", + ike_sa->get_unique_id(ike_sa)); + xmlTextWriterWriteFormatElement(writer, "status", "%N", + ike_sa_state_lower_names, ike_sa->get_state(ike_sa)); + xmlTextWriterWriteElement(writer, "role", + id->is_initiator(id) ? "initiator" : "responder"); + xmlTextWriterWriteElement(writer, "peerconfig", ike_sa->get_name(ike_sa)); + + /* <local> */ + local = ike_sa->get_my_host(ike_sa); + xmlTextWriterStartElement(writer, "local"); + xmlTextWriterWriteFormatElement(writer, "spi", "%.16llx", + id->is_initiator(id) ? id->get_initiator_spi(id) + : id->get_responder_spi(id)); + write_id(writer, "identification", ike_sa->get_my_id(ike_sa)); + write_address(writer, "address", local); + xmlTextWriterWriteFormatElement(writer, "port", "%d", + local->get_port(local)); + if (ike_sa->supports_extension(ike_sa, EXT_NATT)) + { + write_bool(writer, "nat", ike_sa->has_condition(ike_sa, COND_NAT_HERE)); + } + xmlTextWriterEndElement(writer); + /* </local> */ + + /* <remote> */ + remote = ike_sa->get_other_host(ike_sa); + xmlTextWriterStartElement(writer, "remote"); + xmlTextWriterWriteFormatElement(writer, "spi", "%.16llx", + id->is_initiator(id) ? id->get_responder_spi(id) + : id->get_initiator_spi(id)); + write_id(writer, "identification", ike_sa->get_other_id(ike_sa)); + write_address(writer, "address", remote); + xmlTextWriterWriteFormatElement(writer, "port", "%d", + remote->get_port(remote)); + if (ike_sa->supports_extension(ike_sa, EXT_NATT)) + { + write_bool(writer, "nat", ike_sa->has_condition(ike_sa, COND_NAT_THERE)); + } + xmlTextWriterEndElement(writer); + /* </remote> */ + + /* <childsalist> */ + xmlTextWriterStartElement(writer, "childsalist"); + children = ike_sa->create_child_sa_iterator(ike_sa); + while (children->iterate(children, (void**)&child_sa)) + { + write_child(writer, child_sa); + } + children->destroy(children); + /* </childsalist> */ + xmlTextWriterEndElement(writer); + + /* </ikesa> */ + xmlTextWriterEndElement(writer); + } + enumerator->destroy(enumerator); + + /* </ikesalist> */ + xmlTextWriterEndElement(writer); +} + +/** + * process a configlist query request message + */ +static void request_query_config(xmlTextReaderPtr reader, xmlTextWriterPtr writer) +{ + enumerator_t *enumerator; + peer_cfg_t *peer_cfg; + + /* <configlist> */ + xmlTextWriterStartElement(writer, "configlist"); + + enumerator = charon->backends->create_peer_cfg_enumerator(charon->backends, + NULL, NULL, NULL, NULL); + while (enumerator->enumerate(enumerator, &peer_cfg)) + { + enumerator_t *children; + child_cfg_t *child_cfg; + ike_cfg_t *ike_cfg; + linked_list_t *list; + + if (peer_cfg->get_ike_version(peer_cfg) != 2) + { /* only IKEv2 connections yet */ + continue; + } + + /* <peerconfig> */ + xmlTextWriterStartElement(writer, "peerconfig"); + xmlTextWriterWriteElement(writer, "name", peer_cfg->get_name(peer_cfg)); + + /* TODO: write auth_cfgs */ + + /* <ikeconfig> */ + ike_cfg = peer_cfg->get_ike_cfg(peer_cfg); + xmlTextWriterStartElement(writer, "ikeconfig"); + xmlTextWriterWriteElement(writer, "local", ike_cfg->get_my_addr(ike_cfg)); + xmlTextWriterWriteElement(writer, "remote", ike_cfg->get_other_addr(ike_cfg)); + xmlTextWriterEndElement(writer); + /* </ikeconfig> */ + + /* <childconfiglist> */ + xmlTextWriterStartElement(writer, "childconfiglist"); + children = peer_cfg->create_child_cfg_enumerator(peer_cfg); + while (children->enumerate(children, &child_cfg)) + { + /* <childconfig> */ + xmlTextWriterStartElement(writer, "childconfig"); + xmlTextWriterWriteElement(writer, "name", + child_cfg->get_name(child_cfg)); + list = child_cfg->get_traffic_selectors(child_cfg, TRUE, NULL, NULL); + write_networks(writer, "local", list); + list->destroy_offset(list, offsetof(traffic_selector_t, destroy)); + list = child_cfg->get_traffic_selectors(child_cfg, FALSE, NULL, NULL); + write_networks(writer, "remote", list); + list->destroy_offset(list, offsetof(traffic_selector_t, destroy)); + xmlTextWriterEndElement(writer); + /* </childconfig> */ + } + children->destroy(children); + /* </childconfiglist> */ + xmlTextWriterEndElement(writer); + /* </peerconfig> */ + xmlTextWriterEndElement(writer); + } + enumerator->destroy(enumerator); + /* </configlist> */ + xmlTextWriterEndElement(writer); +} + +/** + * callback which logs to a XML writer + */ +static bool xml_callback(xmlTextWriterPtr writer, debug_t group, level_t level, + ike_sa_t* ike_sa, char* format, va_list args) +{ + if (level <= 1) + { + /* <item> */ + xmlTextWriterStartElement(writer, "item"); + xmlTextWriterWriteFormatAttribute(writer, "level", "%d", level); + xmlTextWriterWriteFormatAttribute(writer, "source", "%N", debug_names, group); + xmlTextWriterWriteFormatAttribute(writer, "thread", "%u", thread_current_id()); + xmlTextWriterWriteVFormatString(writer, format, args); + xmlTextWriterEndElement(writer); + /* </item> */ + } + return TRUE; +} + +/** + * process a *terminate control request message + */ +static void request_control_terminate(xmlTextReaderPtr reader, + xmlTextWriterPtr writer, bool ike) +{ + if (xmlTextReaderRead(reader) && + xmlTextReaderNodeType(reader) == XML_READER_TYPE_TEXT) + { + const char *str; + u_int32_t id; + status_t status; + + str = xmlTextReaderConstValue(reader); + if (str == NULL) + { + DBG1(DBG_CFG, "error parsing XML id string"); + return; + } + id = atoi(str); + if (!id) + { + enumerator_t *enumerator; + ike_sa_t *ike_sa; + + enumerator = charon->controller->create_ike_sa_enumerator(charon->controller); + while (enumerator->enumerate(enumerator, &ike_sa)) + { + if (streq(str, ike_sa->get_name(ike_sa))) + { + ike = TRUE; + id = ike_sa->get_unique_id(ike_sa); + break; + } + } + enumerator->destroy(enumerator); + } + if (!id) + { + DBG1(DBG_CFG, "error parsing XML id string"); + return; + } + + DBG1(DBG_CFG, "terminating %s_SA %d", ike ? "IKE" : "CHILD", id); + + /* <log> */ + xmlTextWriterStartElement(writer, "log"); + if (ike) + { + status = charon->controller->terminate_ike( + charon->controller, id, + (controller_cb_t)xml_callback, writer); + } + else + { + status = charon->controller->terminate_child( + charon->controller, id, + (controller_cb_t)xml_callback, writer); + } + /* </log> */ + xmlTextWriterEndElement(writer); + xmlTextWriterWriteFormatElement(writer, "status", "%d", status); + } +} + +/** + * process a *initiate control request message + */ +static void request_control_initiate(xmlTextReaderPtr reader, + xmlTextWriterPtr writer, bool ike) +{ + if (xmlTextReaderRead(reader) && + xmlTextReaderNodeType(reader) == XML_READER_TYPE_TEXT) + { + const char *str; + status_t status = FAILED; + peer_cfg_t *peer; + child_cfg_t *child = NULL; + enumerator_t *enumerator; + + str = xmlTextReaderConstValue(reader); + if (str == NULL) + { + DBG1(DBG_CFG, "error parsing XML config name string"); + return; + } + DBG1(DBG_CFG, "initiating %s_SA %s", ike ? "IKE" : "CHILD", str); + + /* <log> */ + xmlTextWriterStartElement(writer, "log"); + peer = charon->backends->get_peer_cfg_by_name(charon->backends, (char*)str); + if (peer) + { + enumerator = peer->create_child_cfg_enumerator(peer); + if (ike) + { + if (!enumerator->enumerate(enumerator, &child)) + { + child = NULL; + } + child->get_ref(child); + } + else + { + while (enumerator->enumerate(enumerator, &child)) + { + if (streq(child->get_name(child), str)) + { + child->get_ref(child); + break; + } + child = NULL; + } + } + enumerator->destroy(enumerator); + if (child) + { + status = charon->controller->initiate(charon->controller, + peer, child, (controller_cb_t)xml_callback, + writer); + } + else + { + peer->destroy(peer); + } + } + /* </log> */ + xmlTextWriterEndElement(writer); + xmlTextWriterWriteFormatElement(writer, "status", "%d", status); + } +} + +/** + * process a query request + */ +static void request_query(xmlTextReaderPtr reader, xmlTextWriterPtr writer) +{ + /* <query> */ + xmlTextWriterStartElement(writer, "query"); + while (xmlTextReaderRead(reader)) + { + if (xmlTextReaderNodeType(reader) == XML_READER_TYPE_ELEMENT) + { + if (streq(xmlTextReaderConstName(reader), "ikesalist")) + { + request_query_ikesa(reader, writer); + break; + } + if (streq(xmlTextReaderConstName(reader), "configlist")) + { + request_query_config(reader, writer); + break; + } + } + } + /* </query> */ + xmlTextWriterEndElement(writer); +} + +/** + * process a control request + */ +static void request_control(xmlTextReaderPtr reader, xmlTextWriterPtr writer) +{ + /* <control> */ + xmlTextWriterStartElement(writer, "control"); + while (xmlTextReaderRead(reader)) + { + if (xmlTextReaderNodeType(reader) == XML_READER_TYPE_ELEMENT) + { + if (streq(xmlTextReaderConstName(reader), "ikesaterminate")) + { + request_control_terminate(reader, writer, TRUE); + break; + } + if (streq(xmlTextReaderConstName(reader), "childsaterminate")) + { + request_control_terminate(reader, writer, FALSE); + break; + } + if (streq(xmlTextReaderConstName(reader), "ikesainitiate")) + { + request_control_initiate(reader, writer, TRUE); + break; + } + if (streq(xmlTextReaderConstName(reader), "childsainitiate")) + { + request_control_initiate(reader, writer, FALSE); + break; + } + } + } + /* </control> */ + xmlTextWriterEndElement(writer); +} + +/** + * process a request message + */ +static void request(xmlTextReaderPtr reader, char *id, int fd) +{ + xmlTextWriterPtr writer; + + writer = xmlNewTextWriter(xmlOutputBufferCreateFd(fd, NULL)); + if (writer == NULL) + { + DBG1(DBG_CFG, "opening SMP XML writer failed"); + return; + } + + xmlTextWriterStartDocument(writer, NULL, NULL, NULL); + /* <message xmlns="http://www.strongswan.org/smp/1.0" + id="id" type="response"> */ + xmlTextWriterStartElement(writer, "message"); + xmlTextWriterWriteAttribute(writer, "xmlns", + "http://www.strongswan.org/smp/1.0"); + xmlTextWriterWriteAttribute(writer, "id", id); + xmlTextWriterWriteAttribute(writer, "type", "response"); + + while (xmlTextReaderRead(reader)) + { + if (xmlTextReaderNodeType(reader) == XML_READER_TYPE_ELEMENT) + { + if (streq(xmlTextReaderConstName(reader), "query")) + { + request_query(reader, writer); + break; + } + if (streq(xmlTextReaderConstName(reader), "control")) + { + request_control(reader, writer); + break; + } + } + } + /* </message> and close document */ + xmlTextWriterEndDocument(writer); + xmlFreeTextWriter(writer); +} + +/** + * cleanup helper function for open file descriptors + */ +static void closefdp(int *fd) +{ + close(*fd); +} + +/** + * read from a opened connection and process it + */ +static job_requeue_t process(int *fdp) +{ + int fd = *fdp; + bool oldstate; + char buffer[4096]; + size_t len; + xmlTextReaderPtr reader; + char *id = NULL, *type = NULL; + + thread_cleanup_push((thread_cleanup_t)closefdp, (void*)&fd); + oldstate = thread_cancelability(TRUE); + len = read(fd, buffer, sizeof(buffer)); + thread_cancelability(oldstate); + thread_cleanup_pop(FALSE); + if (len <= 0) + { + close(fd); + DBG2(DBG_CFG, "SMP XML connection closed"); + return JOB_REQUEUE_NONE; + } + DBG3(DBG_CFG, "got XML request: %b", buffer, len); + + reader = xmlReaderForMemory(buffer, len, NULL, NULL, 0); + if (reader == NULL) + { + DBG1(DBG_CFG, "opening SMP XML reader failed"); + return JOB_REQUEUE_FAIR;; + } + + /* read message type and id */ + while (xmlTextReaderRead(reader)) + { + if (xmlTextReaderNodeType(reader) == XML_READER_TYPE_ELEMENT && + streq(xmlTextReaderConstName(reader), "message")) + { + id = xmlTextReaderGetAttribute(reader, "id"); + type = xmlTextReaderGetAttribute(reader, "type"); + break; + } + } + + /* process message */ + if (id && type) + { + if (streq(type, "request")) + { + request(reader, id, fd); + } + else + { + /* response(reader, id) */ + } + } + xmlFreeTextReader(reader); + return JOB_REQUEUE_FAIR;; +} + +/** + * accept from XML socket and create jobs to process connections + */ +static job_requeue_t dispatch(private_smp_t *this) +{ + struct sockaddr_un strokeaddr; + int fd, *fdp, strokeaddrlen = sizeof(strokeaddr); + callback_job_t *job; + bool oldstate; + + /* wait for connections, but allow thread to terminate */ + oldstate = thread_cancelability(TRUE); + fd = accept(this->socket, (struct sockaddr *)&strokeaddr, &strokeaddrlen); + thread_cancelability(oldstate); + + if (fd < 0) + { + DBG1(DBG_CFG, "accepting SMP XML socket failed: %s", strerror(errno)); + sleep(1); + return JOB_REQUEUE_FAIR;; + } + + fdp = malloc_thing(int); + *fdp = fd; + job = callback_job_create((callback_job_cb_t)process, fdp, free, this->job); + charon->processor->queue_job(charon->processor, (job_t*)job); + + return JOB_REQUEUE_DIRECT; +} + +/** + * Implementation of itnerface_t.destroy. + */ +static void destroy(private_smp_t *this) +{ + this->job->cancel(this->job); + close(this->socket); + free(this); +} + +/* + * Described in header file + */ +plugin_t *smp_plugin_create() +{ + struct sockaddr_un unix_addr = { AF_UNIX, IPSEC_PIDDIR "/charon.xml"}; + private_smp_t *this = malloc_thing(private_smp_t); + mode_t old; + + this->public.plugin.destroy = (void (*)(plugin_t*))destroy; + + /* set up unix socket */ + this->socket = socket(AF_UNIX, SOCK_STREAM, 0); + if (this->socket == -1) + { + DBG1(DBG_CFG, "could not create XML socket"); + free(this); + return NULL; + } + + unlink(unix_addr.sun_path); + old = umask(~(S_IRWXU | S_IRWXG)); + if (bind(this->socket, (struct sockaddr *)&unix_addr, sizeof(unix_addr)) < 0) + { + DBG1(DBG_CFG, "could not bind XML socket: %s", strerror(errno)); + close(this->socket); + free(this); + return NULL; + } + umask(old); + if (chown(unix_addr.sun_path, charon->uid, charon->gid) != 0) + { + DBG1(DBG_CFG, "changing XML socket permissions failed: %s", strerror(errno)); + } + + if (listen(this->socket, 5) < 0) + { + DBG1(DBG_CFG, "could not listen on XML socket: %s", strerror(errno)); + close(this->socket); + free(this); + return NULL; + } + + this->job = callback_job_create((callback_job_cb_t)dispatch, this, NULL, NULL); + charon->processor->queue_job(charon->processor, (job_t*)this->job); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/smp/smp.h b/src/libcharon/plugins/smp/smp.h new file mode 100644 index 000000000..74c85fb5f --- /dev/null +++ b/src/libcharon/plugins/smp/smp.h @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2007-2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup smp smp + * @ingroup cplugins + * + * @defgroup smp_i smp + * @{ @ingroup smp + */ + +#ifndef SMP_H_ +#define SMP_H_ + +#include <plugins/plugin.h> + +typedef struct smp_t smp_t; + +/** + * SMP configuration and control interface. + * + * The SMP interface uses a socket and a to communicate. The syntax is strict + * XML, defined in the schema.xml specification. + */ +struct smp_t { + + /** + * implements the plugin interface. + */ + plugin_t plugin; +}; + +#endif /** XML_H_ @}*/ diff --git a/src/libcharon/plugins/socket_default/Makefile.am b/src/libcharon/plugins/socket_default/Makefile.am new file mode 100644 index 000000000..635a1c548 --- /dev/null +++ b/src/libcharon/plugins/socket_default/Makefile.am @@ -0,0 +1,17 @@ + +INCLUDES = -I${linux_headers} -I$(top_srcdir)/src/libstrongswan \ + -I$(top_srcdir)/src/libhydra -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-socket-default.la +else +plugin_LTLIBRARIES = libstrongswan-socket-default.la +endif + +libstrongswan_socket_default_la_SOURCES = \ + socket_default_socket.h socket_default_socket.c \ + socket_default_plugin.h socket_default_plugin.c + +libstrongswan_socket_default_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/socket_default/Makefile.in b/src/libcharon/plugins/socket_default/Makefile.in new file mode 100644 index 000000000..03c438acd --- /dev/null +++ b/src/libcharon/plugins/socket_default/Makefile.in @@ -0,0 +1,590 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src/libcharon/plugins/socket_default +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/config/libtool.m4 \ + $(top_srcdir)/m4/config/ltoptions.m4 \ + $(top_srcdir)/m4/config/ltsugar.m4 \ + $(top_srcdir)/m4/config/ltversion.m4 \ + $(top_srcdir)/m4/config/lt~obsolete.m4 \ + $(top_srcdir)/m4/macros/with.m4 \ + $(top_srcdir)/m4/macros/enable-disable.m4 \ + $(top_srcdir)/configure.in 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files[dir] }' +am__base_list = \ + sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \ + sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g' +am__installdirs = "$(DESTDIR)$(plugindir)" +LTLIBRARIES = $(noinst_LTLIBRARIES) $(plugin_LTLIBRARIES) +libstrongswan_socket_default_la_LIBADD = +am_libstrongswan_socket_default_la_OBJECTS = socket_default_socket.lo \ + socket_default_plugin.lo +libstrongswan_socket_default_la_OBJECTS = \ + $(am_libstrongswan_socket_default_la_OBJECTS) +libstrongswan_socket_default_la_LINK = $(LIBTOOL) --tag=CC \ + $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \ + $(AM_CFLAGS) $(CFLAGS) \ + $(libstrongswan_socket_default_la_LDFLAGS) $(LDFLAGS) -o $@ +@MONOLITHIC_FALSE@am_libstrongswan_socket_default_la_rpath = -rpath \ +@MONOLITHIC_FALSE@ $(plugindir) +@MONOLITHIC_TRUE@am_libstrongswan_socket_default_la_rpath = +DEFAULT_INCLUDES = -I.@am__isrc@ +depcomp = $(SHELL) $(top_srcdir)/depcomp +am__depfiles_maybe = depfiles +am__mv = mv -f +COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \ + $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ + --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \ + $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +CCLD = $(CC) +LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ + --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \ + $(LDFLAGS) -o $@ +SOURCES = $(libstrongswan_socket_default_la_SOURCES) +DIST_SOURCES = $(libstrongswan_socket_default_la_SOURCES) +ETAGS = etags +CTAGS = ctags +DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST) +ACLOCAL = @ACLOCAL@ +ALLOCA = @ALLOCA@ +AMTAR = @AMTAR@ +AR = @AR@ +AUTOCONF = @AUTOCONF@ +AUTOHEADER = @AUTOHEADER@ +AUTOMAKE = @AUTOMAKE@ +AWK = @AWK@ +BTLIB = @BTLIB@ +CC = @CC@ +CCDEPMODE = @CCDEPMODE@ +CFLAGS = @CFLAGS@ +CPP = @CPP@ +CPPFLAGS = @CPPFLAGS@ +CYGPATH_W = @CYGPATH_W@ +DEFS = @DEFS@ +DEPDIR = @DEPDIR@ +DLLIB = @DLLIB@ +DSYMUTIL = 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distclean-libtool distclean-tags distdir dvi dvi-am html \ + html-am info info-am install install-am install-data \ + install-data-am install-dvi install-dvi-am install-exec \ + install-exec-am install-html install-html-am install-info \ + install-info-am install-man install-pdf install-pdf-am \ + install-pluginLTLIBRARIES install-ps install-ps-am \ + install-strip installcheck installcheck-am installdirs \ + maintainer-clean maintainer-clean-generic mostlyclean \ + mostlyclean-compile mostlyclean-generic mostlyclean-libtool \ + pdf pdf-am ps ps-am tags uninstall uninstall-am \ + uninstall-pluginLTLIBRARIES + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/socket_default/socket_default_plugin.c b/src/libcharon/plugins/socket_default/socket_default_plugin.c new file mode 100644 index 000000000..45390ddae --- /dev/null +++ b/src/libcharon/plugins/socket_default/socket_default_plugin.c @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "socket_default_plugin.h" + +#include "socket_default_socket.h" + +#include <daemon.h> + +typedef struct private_socket_default_plugin_t private_socket_default_plugin_t; + +/** + * Private data of socket plugin + */ +struct private_socket_default_plugin_t { + + /** + * Implements plugin interface + */ + socket_default_plugin_t public; + + /** + * Socket instance. + */ + socket_default_socket_t *socket; +}; + +METHOD(plugin_t, destroy, void, + private_socket_default_plugin_t *this) +{ + charon->socket->remove_socket(charon->socket, &this->socket->socket); + this->socket->destroy(this->socket); + free(this); +} + +/* + * see header file + */ +plugin_t *socket_default_plugin_create() +{ + private_socket_default_plugin_t *this; + + INIT(this, + .public.plugin.destroy = _destroy, + .socket = socket_default_socket_create(), + ); + + if (!this->socket) + { + free(this); + return NULL; + } + charon->socket->add_socket(charon->socket, &this->socket->socket); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/socket_default/socket_default_plugin.h b/src/libcharon/plugins/socket_default/socket_default_plugin.h new file mode 100644 index 000000000..6270d93ad --- /dev/null +++ b/src/libcharon/plugins/socket_default/socket_default_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup socket_default socket_default + * @ingroup cplugins + * + * @defgroup socket_default_plugin socket_default_plugin + * @{ @ingroup socket_default + */ + +#ifndef SOCKET_DEFAULT_PLUGIN_H_ +#define SOCKET_DEFAULT_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct socket_default_plugin_t socket_default_plugin_t; + +/** + * Default socket implementation plugin. + */ +struct socket_default_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** SOCKET_DEFAULT_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/socket_default/socket_default_socket.c b/src/libcharon/plugins/socket_default/socket_default_socket.c new file mode 100644 index 000000000..bc998182e --- /dev/null +++ b/src/libcharon/plugins/socket_default/socket_default_socket.c @@ -0,0 +1,631 @@ +/* + * Copyright (C) 2006-2009 Tobias Brunner + * Copyright (C) 2006 Daniel Roethlisberger + * Copyright (C) 2005-2010 Martin Willi + * Copyright (C) 2005 Jan Hutter + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/* for struct in6_pktinfo */ +#define _GNU_SOURCE +#ifdef __sun +#define _XPG4_2 +#define __EXTENSIONS__ +#endif + +#include "socket_default_socket.h" + +#include <sys/types.h> +#include <sys/socket.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <stdlib.h> +#include <fcntl.h> +#include <sys/ioctl.h> +#include <netinet/in_systm.h> +#include <netinet/in.h> +#include <netinet/ip.h> +#include <netinet/udp.h> +#include <net/if.h> +#ifdef __APPLE__ +#include <sys/sysctl.h> +#endif + +#include <daemon.h> +#include <threading/thread.h> + +/* Maximum size of a packet */ +#define MAX_PACKET 5000 + +/* length of non-esp marker */ +#define MARKER_LEN sizeof(u_int32_t) + +/* from linux/udp.h */ +#ifndef UDP_ENCAP +#define UDP_ENCAP 100 +#endif /*UDP_ENCAP*/ + +#ifndef UDP_ENCAP_ESPINUDP +#define UDP_ENCAP_ESPINUDP 2 +#endif /*UDP_ENCAP_ESPINUDP*/ + +/* these are not defined on some platforms */ +#ifndef SOL_IP +#define SOL_IP IPPROTO_IP +#endif +#ifndef SOL_IPV6 +#define SOL_IPV6 IPPROTO_IPV6 +#endif +#ifndef SOL_UDP +#define SOL_UDP IPPROTO_UDP +#endif + +/* IPV6_RECVPKTINFO is defined in RFC 3542 which obsoletes RFC 2292 that + * previously defined IPV6_PKTINFO */ +#ifndef IPV6_RECVPKTINFO +#define IPV6_RECVPKTINFO IPV6_PKTINFO +#endif + +#ifndef IN6ADDR_ANY_INIT +#define IN6ADDR_ANY_INIT {{{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}} +#endif + +#ifndef HAVE_IN6ADDR_ANY +static const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT; +#endif + +typedef struct private_socket_default_socket_t private_socket_default_socket_t; + +/** + * Private data of an socket_t object + */ +struct private_socket_default_socket_t { + + /** + * public functions + */ + socket_default_socket_t public; + + /** + * IPv4 socket (500) + */ + int ipv4; + + /** + * IPv4 socket for NATT (4500) + */ + int ipv4_natt; + + /** + * IPv6 socket (500) + */ + int ipv6; + + /** + * IPv6 socket for NATT (4500) + */ + int ipv6_natt; +}; + +METHOD(socket_t, receiver, status_t, + private_socket_default_socket_t *this, packet_t **packet) +{ + char buffer[MAX_PACKET]; + chunk_t data; + packet_t *pkt; + host_t *source = NULL, *dest = NULL; + int bytes_read = 0, data_offset; + bool oldstate; + + fd_set rfds; + int max_fd = 0, selected = 0; + u_int16_t port = 0; + + FD_ZERO(&rfds); + + if (this->ipv4) + { + FD_SET(this->ipv4, &rfds); + } + if (this->ipv4_natt) + { + FD_SET(this->ipv4_natt, &rfds); + } + if (this->ipv6) + { + FD_SET(this->ipv6, &rfds); + } + if (this->ipv6_natt) + { + FD_SET(this->ipv6_natt, &rfds); + } + max_fd = max(max(this->ipv4, this->ipv4_natt), max(this->ipv6, this->ipv6_natt)); + + DBG2(DBG_NET, "waiting for data on sockets"); + oldstate = thread_cancelability(TRUE); + if (select(max_fd + 1, &rfds, NULL, NULL, NULL) <= 0) + { + thread_cancelability(oldstate); + return FAILED; + } + thread_cancelability(oldstate); + + if (FD_ISSET(this->ipv4, &rfds)) + { + port = IKEV2_UDP_PORT; + selected = this->ipv4; + } + if (FD_ISSET(this->ipv4_natt, &rfds)) + { + port = IKEV2_NATT_PORT; + selected = this->ipv4_natt; + } + if (FD_ISSET(this->ipv6, &rfds)) + { + port = IKEV2_UDP_PORT; + selected = this->ipv6; + } + if (FD_ISSET(this->ipv6_natt, &rfds)) + { + port = IKEV2_NATT_PORT; + selected = this->ipv6_natt; + } + if (selected) + { + struct msghdr msg; + struct cmsghdr *cmsgptr; + struct iovec iov; + char ancillary[64]; + union { + struct sockaddr_in in4; + struct sockaddr_in6 in6; + } src; + + msg.msg_name = &src; + msg.msg_namelen = sizeof(src); + iov.iov_base = buffer; + iov.iov_len = sizeof(buffer); + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_control = ancillary; + msg.msg_controllen = sizeof(ancillary); + msg.msg_flags = 0; + bytes_read = recvmsg(selected, &msg, 0); + if (bytes_read < 0) + { + DBG1(DBG_NET, "error reading socket: %s", strerror(errno)); + return FAILED; + } + DBG3(DBG_NET, "received packet %b", buffer, bytes_read); + + if (bytes_read < MARKER_LEN) + { + DBG3(DBG_NET, "received packet too short (%d bytes)", + bytes_read); + return FAILED; + } + + /* read ancillary data to get destination address */ + for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL; + cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) + { + if (cmsgptr->cmsg_len == 0) + { + DBG1(DBG_NET, "error reading ancillary data"); + return FAILED; + } + +#ifdef HAVE_IN6_PKTINFO + if (cmsgptr->cmsg_level == SOL_IPV6 && + cmsgptr->cmsg_type == IPV6_PKTINFO) + { + struct in6_pktinfo *pktinfo; + pktinfo = (struct in6_pktinfo*)CMSG_DATA(cmsgptr); + struct sockaddr_in6 dst; + + memset(&dst, 0, sizeof(dst)); + memcpy(&dst.sin6_addr, &pktinfo->ipi6_addr, sizeof(dst.sin6_addr)); + dst.sin6_family = AF_INET6; + dst.sin6_port = htons(port); + dest = host_create_from_sockaddr((sockaddr_t*)&dst); + } +#endif /* HAVE_IN6_PKTINFO */ + if (cmsgptr->cmsg_level == SOL_IP && +#ifdef IP_PKTINFO + cmsgptr->cmsg_type == IP_PKTINFO +#elif defined(IP_RECVDSTADDR) + cmsgptr->cmsg_type == IP_RECVDSTADDR +#else + FALSE +#endif + ) + { + struct in_addr *addr; + struct sockaddr_in dst; + +#ifdef IP_PKTINFO + struct in_pktinfo *pktinfo; + pktinfo = (struct in_pktinfo*)CMSG_DATA(cmsgptr); + addr = &pktinfo->ipi_addr; +#elif defined(IP_RECVDSTADDR) + addr = (struct in_addr*)CMSG_DATA(cmsgptr); +#endif + memset(&dst, 0, sizeof(dst)); + memcpy(&dst.sin_addr, addr, sizeof(dst.sin_addr)); + + dst.sin_family = AF_INET; + dst.sin_port = htons(port); + dest = host_create_from_sockaddr((sockaddr_t*)&dst); + } + if (dest) + { + break; + } + } + if (dest == NULL) + { + DBG1(DBG_NET, "error reading IP header"); + return FAILED; + } + source = host_create_from_sockaddr((sockaddr_t*)&src); + + pkt = packet_create(); + pkt->set_source(pkt, source); + pkt->set_destination(pkt, dest); + DBG2(DBG_NET, "received packet: from %#H to %#H", source, dest); + data_offset = 0; + /* remove non esp marker */ + if (dest->get_port(dest) == IKEV2_NATT_PORT) + { + data_offset += MARKER_LEN; + } + /* fill in packet */ + data.len = bytes_read - data_offset; + data.ptr = malloc(data.len); + memcpy(data.ptr, buffer + data_offset, data.len); + pkt->set_data(pkt, data); + } + else + { + /* oops, shouldn't happen */ + return FAILED; + } + /* return packet */ + *packet = pkt; + return SUCCESS; +} + +METHOD(socket_t, sender, status_t, + private_socket_default_socket_t *this, packet_t *packet) +{ + int sport, skt, family; + ssize_t bytes_sent; + chunk_t data, marked; + host_t *src, *dst; + struct msghdr msg; + struct cmsghdr *cmsg; + struct iovec iov; + + src = packet->get_source(packet); + dst = packet->get_destination(packet); + data = packet->get_data(packet); + + DBG2(DBG_NET, "sending packet: from %#H to %#H", src, dst); + + /* send data */ + sport = src->get_port(src); + family = dst->get_family(dst); + if (sport == IKEV2_UDP_PORT) + { + if (family == AF_INET) + { + skt = this->ipv4; + } + else + { + skt = this->ipv6; + } + } + else if (sport == IKEV2_NATT_PORT) + { + if (family == AF_INET) + { + skt = this->ipv4_natt; + } + else + { + skt = this->ipv6_natt; + } + /* NAT keepalives without marker */ + if (data.len != 1 || data.ptr[0] != 0xFF) + { + /* add non esp marker to packet */ + if (data.len > MAX_PACKET - MARKER_LEN) + { + DBG1(DBG_NET, "unable to send packet: it's too big (%d bytes)", + data.len); + return FAILED; + } + marked = chunk_alloc(data.len + MARKER_LEN); + memset(marked.ptr, 0, MARKER_LEN); + memcpy(marked.ptr + MARKER_LEN, data.ptr, data.len); + /* let the packet do the clean up for us */ + packet->set_data(packet, marked); + data = marked; + } + } + else + { + DBG1(DBG_NET, "unable to locate a send socket for port %d", sport); + return FAILED; + } + + memset(&msg, 0, sizeof(struct msghdr)); + msg.msg_name = dst->get_sockaddr(dst);; + msg.msg_namelen = *dst->get_sockaddr_len(dst); + iov.iov_base = data.ptr; + iov.iov_len = data.len; + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_flags = 0; + + if (!src->is_anyaddr(src)) + { + if (family == AF_INET) + { +#if defined(IP_PKTINFO) || defined(IP_SENDSRCADDR) + struct in_addr *addr; + struct sockaddr_in *sin; +#ifdef IP_PKTINFO + char buf[CMSG_SPACE(sizeof(struct in_pktinfo))]; + struct in_pktinfo *pktinfo; +#elif defined(IP_SENDSRCADDR) + char buf[CMSG_SPACE(sizeof(struct in_addr))]; +#endif + msg.msg_control = buf; + msg.msg_controllen = sizeof(buf); + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_IP; +#ifdef IP_PKTINFO + cmsg->cmsg_type = IP_PKTINFO; + cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo)); + pktinfo = (struct in_pktinfo*)CMSG_DATA(cmsg); + memset(pktinfo, 0, sizeof(struct in_pktinfo)); + addr = &pktinfo->ipi_spec_dst; +#elif defined(IP_SENDSRCADDR) + cmsg->cmsg_type = IP_SENDSRCADDR; + cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr)); + addr = (struct in_addr*)CMSG_DATA(cmsg); +#endif + sin = (struct sockaddr_in*)src->get_sockaddr(src); + memcpy(addr, &sin->sin_addr, sizeof(struct in_addr)); +#endif /* IP_PKTINFO || IP_SENDSRCADDR */ + } +#ifdef HAVE_IN6_PKTINFO + else + { + char buf[CMSG_SPACE(sizeof(struct in6_pktinfo))]; + struct in6_pktinfo *pktinfo; + struct sockaddr_in6 *sin; + + msg.msg_control = buf; + msg.msg_controllen = sizeof(buf); + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_IPV6; + cmsg->cmsg_type = IPV6_PKTINFO; + cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); + pktinfo = (struct in6_pktinfo*)CMSG_DATA(cmsg); + memset(pktinfo, 0, sizeof(struct in6_pktinfo)); + sin = (struct sockaddr_in6*)src->get_sockaddr(src); + memcpy(&pktinfo->ipi6_addr, &sin->sin6_addr, sizeof(struct in6_addr)); + } +#endif /* HAVE_IN6_PKTINFO */ + } + + bytes_sent = sendmsg(skt, &msg, 0); + + if (bytes_sent != data.len) + { + DBG1(DBG_NET, "error writing to socket: %s", strerror(errno)); + return FAILED; + } + return SUCCESS; +} + +/** + * open a socket to send and receive packets + */ +static int open_socket(private_socket_default_socket_t *this, + int family, u_int16_t port) +{ + int on = TRUE; + struct sockaddr_storage addr; + socklen_t addrlen; + u_int sol, pktinfo = 0; + int skt; + + memset(&addr, 0, sizeof(addr)); + /* precalculate constants depending on address family */ + switch (family) + { + case AF_INET: + { + struct sockaddr_in *sin = (struct sockaddr_in *)&addr; + sin->sin_family = AF_INET; + sin->sin_addr.s_addr = INADDR_ANY; + sin->sin_port = htons(port); + addrlen = sizeof(struct sockaddr_in); + sol = SOL_IP; +#ifdef IP_PKTINFO + pktinfo = IP_PKTINFO; +#elif defined(IP_RECVDSTADDR) + pktinfo = IP_RECVDSTADDR; +#endif + break; + } + case AF_INET6: + { + struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&addr; + sin6->sin6_family = AF_INET6; + memcpy(&sin6->sin6_addr, &in6addr_any, sizeof(in6addr_any)); + sin6->sin6_port = htons(port); + addrlen = sizeof(struct sockaddr_in6); + sol = SOL_IPV6; + pktinfo = IPV6_RECVPKTINFO; + break; + } + default: + return 0; + } + + skt = socket(family, SOCK_DGRAM, IPPROTO_UDP); + if (skt < 0) + { + DBG1(DBG_NET, "could not open socket: %s", strerror(errno)); + return 0; + } + if (setsockopt(skt, SOL_SOCKET, SO_REUSEADDR, (void*)&on, sizeof(on)) < 0) + { + DBG1(DBG_NET, "unable to set SO_REUSEADDR on socket: %s", strerror(errno)); + close(skt); + return 0; + } + + /* bind the socket */ + if (bind(skt, (struct sockaddr *)&addr, addrlen) < 0) + { + DBG1(DBG_NET, "unable to bind socket: %s", strerror(errno)); + close(skt); + return 0; + } + + /* get additional packet info on receive */ + if (pktinfo > 0) + { + if (setsockopt(skt, sol, pktinfo, &on, sizeof(on)) < 0) + { + DBG1(DBG_NET, "unable to set IP_PKTINFO on socket: %s", strerror(errno)); + close(skt); + return 0; + } + } + + if (!charon->kernel_interface->bypass_socket(charon->kernel_interface, + skt, family)) + { + DBG1(DBG_NET, "installing IKE bypass policy failed"); + } + +#ifndef __APPLE__ + { + /* enable UDP decapsulation globally, only for one socket needed */ + int type = UDP_ENCAP_ESPINUDP; + if (family == AF_INET && port == IKEV2_NATT_PORT && + setsockopt(skt, SOL_UDP, UDP_ENCAP, &type, sizeof(type)) < 0) + { + DBG1(DBG_NET, "unable to set UDP_ENCAP: %s", strerror(errno)); + } + } +#endif + return skt; +} + +METHOD(socket_default_socket_t, destroy, void, + private_socket_default_socket_t *this) +{ + if (this->ipv4) + { + close(this->ipv4); + } + if (this->ipv4_natt) + { + close(this->ipv4_natt); + } + if (this->ipv6) + { + close(this->ipv6); + } + if (this->ipv6_natt) + { + close(this->ipv6_natt); + } + free(this); +} + +/* + * See header for description + */ +socket_default_socket_t *socket_default_socket_create() +{ + private_socket_default_socket_t *this; + + INIT(this, + .public = { + .socket = { + .send = _sender, + .receive = _receiver, + }, + .destroy = _destroy, + }, + ); + +#ifdef __APPLE__ + { + int natt_port = IKEV2_NATT_PORT; + if (sysctlbyname("net.inet.ipsec.esp_port", NULL, NULL, &natt_port, + sizeof(natt_port)) != 0) + { + DBG1(DBG_NET, "could not set net.inet.ipsec.esp_port to %d: %s", + natt_port, strerror(errno)); + } + } +#endif + + this->ipv4 = open_socket(this, AF_INET, IKEV2_UDP_PORT); + if (this->ipv4 == 0) + { + DBG1(DBG_NET, "could not open IPv4 socket, IPv4 disabled"); + } + else + { + this->ipv4_natt = open_socket(this, AF_INET, IKEV2_NATT_PORT); + if (this->ipv4_natt == 0) + { + DBG1(DBG_NET, "could not open IPv4 NAT-T socket"); + } + } + + this->ipv6 = open_socket(this, AF_INET6, IKEV2_UDP_PORT); + if (this->ipv6 == 0) + { + DBG1(DBG_NET, "could not open IPv6 socket, IPv6 disabled"); + } + else + { + this->ipv6_natt = open_socket(this, AF_INET6, IKEV2_NATT_PORT); + if (this->ipv6_natt == 0) + { + DBG1(DBG_NET, "could not open IPv6 NAT-T socket"); + } + } + + if (!this->ipv4 && !this->ipv6) + { + DBG1(DBG_NET, "could not create any sockets"); + destroy(this); + return NULL; + } + return &this->public; +} + diff --git a/src/libcharon/plugins/socket_default/socket_default_socket.h b/src/libcharon/plugins/socket_default/socket_default_socket.h new file mode 100644 index 000000000..755016662 --- /dev/null +++ b/src/libcharon/plugins/socket_default/socket_default_socket.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup socket_default_socket socket_default_socket + * @{ @ingroup socket_default + */ + +#ifndef SOCKET_DEFAULT_SOCKET_H_ +#define SOCKET_DEFAULT_SOCKET_H_ + +typedef struct socket_default_socket_t socket_default_socket_t; + +#include <network/socket.h> + +/** + * Default socket, binds to port 500/4500 using any IPv4/IPv6 address. + */ +struct socket_default_socket_t { + + /** + * Implements the socket_t interface. + */ + socket_t socket; + + /** + * Destroy a socket_default_socket_t. + */ + void (*destroy)(socket_default_socket_t *this); +}; + +/** + * Create a socket_default_socket instance. + */ +socket_default_socket_t *socket_default_socket_create(); + +#endif /** SOCKET_DEFAULT_SOCKET_H_ @}*/ diff --git a/src/libcharon/plugins/socket_dynamic/Makefile.am b/src/libcharon/plugins/socket_dynamic/Makefile.am new file mode 100644 index 000000000..914945535 --- /dev/null +++ b/src/libcharon/plugins/socket_dynamic/Makefile.am @@ -0,0 +1,17 @@ + +INCLUDES = -I${linux_headers} -I$(top_srcdir)/src/libstrongswan \ + -I$(top_srcdir)/src/libhydra -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-socket-dynamic.la +else +plugin_LTLIBRARIES = libstrongswan-socket-dynamic.la +endif + +libstrongswan_socket_dynamic_la_SOURCES = \ + socket_dynamic_plugin.h socket_dynamic_plugin.c \ + socket_dynamic_socket.h socket_dynamic_socket.c + +libstrongswan_socket_dynamic_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/socket_dynamic/Makefile.in b/src/libcharon/plugins/socket_dynamic/Makefile.in new file mode 100644 index 000000000..3a5fb3778 --- /dev/null +++ b/src/libcharon/plugins/socket_dynamic/Makefile.in @@ -0,0 +1,590 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src/libcharon/plugins/socket_dynamic +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/config/libtool.m4 \ + $(top_srcdir)/m4/config/ltoptions.m4 \ + $(top_srcdir)/m4/config/ltsugar.m4 \ + $(top_srcdir)/m4/config/ltversion.m4 \ + $(top_srcdir)/m4/config/lt~obsolete.m4 \ + $(top_srcdir)/m4/macros/with.m4 \ + $(top_srcdir)/m4/macros/enable-disable.m4 \ + $(top_srcdir)/configure.in +am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ + $(ACLOCAL_M4) +mkinstalldirs = $(install_sh) -d +CONFIG_CLEAN_FILES = +CONFIG_CLEAN_VPATH_FILES = +am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; +am__vpath_adj = case $$p in \ + $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \ + *) f=$$p;; \ + esac; +am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`; +am__install_max = 40 +am__nobase_strip_setup = \ + srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'` +am__nobase_strip = \ + for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||" +am__nobase_list = $(am__nobase_strip_setup); \ + for p in $$list; do echo "$$p $$p"; done | \ + sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \ + $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \ + if (++n[$$2] == $(am__install_max)) \ + { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \ + END { for (dir in files) print dir, files[dir] }' +am__base_list = \ + sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \ + sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g' +am__installdirs = "$(DESTDIR)$(plugindir)" +LTLIBRARIES = $(noinst_LTLIBRARIES) $(plugin_LTLIBRARIES) +libstrongswan_socket_dynamic_la_LIBADD = +am_libstrongswan_socket_dynamic_la_OBJECTS = socket_dynamic_plugin.lo \ + socket_dynamic_socket.lo +libstrongswan_socket_dynamic_la_OBJECTS = \ + $(am_libstrongswan_socket_dynamic_la_OBJECTS) +libstrongswan_socket_dynamic_la_LINK = $(LIBTOOL) --tag=CC \ + $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \ + $(AM_CFLAGS) $(CFLAGS) \ + $(libstrongswan_socket_dynamic_la_LDFLAGS) $(LDFLAGS) -o $@ +@MONOLITHIC_FALSE@am_libstrongswan_socket_dynamic_la_rpath = -rpath \ +@MONOLITHIC_FALSE@ $(plugindir) +@MONOLITHIC_TRUE@am_libstrongswan_socket_dynamic_la_rpath = +DEFAULT_INCLUDES = -I.@am__isrc@ +depcomp = $(SHELL) $(top_srcdir)/depcomp +am__depfiles_maybe = depfiles +am__mv = mv -f +COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \ + $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ + --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \ + $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +CCLD = $(CC) +LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ + --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \ + $(LDFLAGS) -o $@ +SOURCES = $(libstrongswan_socket_dynamic_la_SOURCES) +DIST_SOURCES = $(libstrongswan_socket_dynamic_la_SOURCES) +ETAGS = etags +CTAGS = ctags +DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST) +ACLOCAL = @ACLOCAL@ +ALLOCA = @ALLOCA@ +AMTAR = @AMTAR@ +AR = @AR@ +AUTOCONF = @AUTOCONF@ +AUTOHEADER = @AUTOHEADER@ +AUTOMAKE = @AUTOMAKE@ +AWK = @AWK@ +BTLIB = @BTLIB@ +CC = @CC@ +CCDEPMODE = @CCDEPMODE@ +CFLAGS = @CFLAGS@ +CPP = @CPP@ +CPPFLAGS = @CPPFLAGS@ +CYGPATH_W = @CYGPATH_W@ +DEFS = @DEFS@ +DEPDIR = @DEPDIR@ +DLLIB = @DLLIB@ +DSYMUTIL = @DSYMUTIL@ +DUMPBIN = @DUMPBIN@ +ECHO_C = @ECHO_C@ +ECHO_N = @ECHO_N@ +ECHO_T = @ECHO_T@ +EGREP = @EGREP@ +EXEEXT = @EXEEXT@ +FGREP = @FGREP@ +GPERF = @GPERF@ +GREP = @GREP@ +INSTALL = @INSTALL@ +INSTALL_DATA = @INSTALL_DATA@ +INSTALL_PROGRAM = @INSTALL_PROGRAM@ +INSTALL_SCRIPT = @INSTALL_SCRIPT@ +INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@ +LD = @LD@ +LDFLAGS = @LDFLAGS@ +LEX = @LEX@ +LEXLIB = @LEXLIB@ +LEX_OUTPUT_ROOT = 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mostlyclean-compile mostlyclean-generic mostlyclean-libtool \ + pdf pdf-am ps ps-am tags uninstall uninstall-am \ + uninstall-pluginLTLIBRARIES + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/socket_dynamic/socket_dynamic_plugin.c b/src/libcharon/plugins/socket_dynamic/socket_dynamic_plugin.c new file mode 100644 index 000000000..3410fc7a4 --- /dev/null +++ b/src/libcharon/plugins/socket_dynamic/socket_dynamic_plugin.c @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "socket_dynamic_plugin.h" + +#include "socket_dynamic_socket.h" + +#include <daemon.h> + +typedef struct private_socket_dynamic_plugin_t private_socket_dynamic_plugin_t; + +/** + * Private data of socket plugin + */ +struct private_socket_dynamic_plugin_t { + + /** + * Implements plugin interface + */ + socket_dynamic_plugin_t public; + + /** + * Socket instance. + */ + socket_dynamic_socket_t *socket; +}; + +METHOD(plugin_t, destroy, void, + private_socket_dynamic_plugin_t *this) +{ + charon->socket->remove_socket(charon->socket, &this->socket->socket); + this->socket->destroy(this->socket); + free(this); +} + +/* + * see header file + */ +plugin_t *socket_dynamic_plugin_create() +{ + private_socket_dynamic_plugin_t *this; + + INIT(this, + .public.plugin.destroy = _destroy, + .socket = socket_dynamic_socket_create(), + ); + + if (!this->socket) + { + free(this); + return NULL; + } + charon->socket->add_socket(charon->socket, &this->socket->socket); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/socket_dynamic/socket_dynamic_plugin.h b/src/libcharon/plugins/socket_dynamic/socket_dynamic_plugin.h new file mode 100644 index 000000000..8d870795f --- /dev/null +++ b/src/libcharon/plugins/socket_dynamic/socket_dynamic_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup socket_dynamic socket_dynamic + * @ingroup cplugins + * + * @defgroup socket_dynamic_plugin socket_dynamic_plugin + * @{ @ingroup socket_dynamic + */ + +#ifndef SOCKET_DYNAMIC_PLUGIN_H_ +#define SOCKET_DYNAMIC_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct socket_dynamic_plugin_t socket_dynamic_plugin_t; + +/** + * Plugin providing a socket that binds ports dynamically. + */ +struct socket_dynamic_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** SOCKET_DYNAMIC_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/socket_dynamic/socket_dynamic_socket.c b/src/libcharon/plugins/socket_dynamic/socket_dynamic_socket.c new file mode 100644 index 000000000..a7db59ce5 --- /dev/null +++ b/src/libcharon/plugins/socket_dynamic/socket_dynamic_socket.c @@ -0,0 +1,620 @@ +/* + * Copyright (C) 2006-2009 Tobias Brunner + * Copyright (C) 2006 Daniel Roethlisberger + * Copyright (C) 2005-2010 Martin Willi + * Copyright (C) 2005 Jan Hutter + * Hochschule fuer Technik Rapperswil + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/* for struct in6_pktinfo */ +#define _GNU_SOURCE + +#include "socket_dynamic_socket.h" + +#include <sys/types.h> +#include <sys/socket.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <stdlib.h> +#include <fcntl.h> +#include <sys/ioctl.h> +#include <netinet/in_systm.h> +#include <netinet/in.h> +#include <netinet/ip.h> +#include <netinet/udp.h> +#include <net/if.h> + +#include <daemon.h> +#include <threading/thread.h> +#include <threading/rwlock.h> +#include <utils/hashtable.h> + +/* Maximum size of a packet */ +#define MAX_PACKET 5000 + +/* length of non-esp marker */ +#define MARKER_LEN sizeof(u_int32_t) + +/* from linux/udp.h */ +#ifndef UDP_ENCAP +#define UDP_ENCAP 100 +#endif /*UDP_ENCAP*/ + +#ifndef UDP_ENCAP_ESPINUDP +#define UDP_ENCAP_ESPINUDP 2 +#endif /*UDP_ENCAP_ESPINUDP*/ + +/* these are not defined on some platforms */ +#ifndef SOL_IP +#define SOL_IP IPPROTO_IP +#endif +#ifndef SOL_IPV6 +#define SOL_IPV6 IPPROTO_IPV6 +#endif +#ifndef SOL_UDP +#define SOL_UDP IPPROTO_UDP +#endif + +/* IPV6_RECVPKTINFO is defined in RFC 3542 which obsoletes RFC 2292 that + * previously defined IPV6_PKTINFO */ +#ifndef IPV6_RECVPKTINFO +#define IPV6_RECVPKTINFO IPV6_PKTINFO +#endif + +typedef struct private_socket_dynamic_socket_t private_socket_dynamic_socket_t; +typedef struct dynsock_t dynsock_t; + +/** + * Private data of an socket_t object + */ +struct private_socket_dynamic_socket_t { + + /** + * public functions + */ + socket_dynamic_socket_t public; + + /** + * Hashtable of bound sockets + */ + hashtable_t *sockets; + + /** + * Lock for sockets hashtable + */ + rwlock_t *lock; + + /** + * Notification pipe to signal receiver + */ + int notify[2]; +}; + +/** + * Struct for a dynamically allocated socket + */ +struct dynsock_t { + + /** + * File descriptor of socket + */ + int fd; + + /** + * Address family + */ + int family; + + /** + * Bound source port + */ + u_int16_t port; +}; + +/** + * Hash function for hashtable + */ +static u_int hash(dynsock_t *key) +{ + return (key->family << 16) | key->port; +} + +/** + * Equals function for hashtable + */ +static bool equals(dynsock_t *a, dynsock_t *b) +{ + return a->family == b->family && a->port == b->port; +} + +/** + * Create a fd_set from all bound sockets + */ +static int build_fds(private_socket_dynamic_socket_t *this, fd_set *fds) +{ + enumerator_t *enumerator; + dynsock_t *key, *value; + int maxfd; + + FD_ZERO(fds); + FD_SET(this->notify[0], fds); + maxfd = this->notify[0]; + + this->lock->read_lock(this->lock); + enumerator = this->sockets->create_enumerator(this->sockets); + while (enumerator->enumerate(enumerator, &key, &value)) + { + FD_SET(value->fd, fds); + maxfd = max(maxfd, value->fd); + } + enumerator->destroy(enumerator); + this->lock->unlock(this->lock); + + return maxfd + 1; +} + +/** + * Find the socket select()ed + */ +static dynsock_t* scan_fds(private_socket_dynamic_socket_t *this, fd_set *fds) +{ + enumerator_t *enumerator; + dynsock_t *key, *value, *selected = NULL; + + this->lock->read_lock(this->lock); + enumerator = this->sockets->create_enumerator(this->sockets); + while (enumerator->enumerate(enumerator, &key, &value)) + { + if (FD_ISSET(value->fd, fds)) + { + selected = value; + break; + } + } + enumerator->destroy(enumerator); + this->lock->unlock(this->lock); + + return selected; +} + +/** + * Receive a packet from a given socket fd + */ +static packet_t *receive_packet(private_socket_dynamic_socket_t *this, + dynsock_t *skt) +{ + host_t *source = NULL, *dest = NULL; + ssize_t len; + char buffer[MAX_PACKET]; + chunk_t data; + packet_t *packet; + struct msghdr msg; + struct cmsghdr *cmsgptr; + struct iovec iov; + char ancillary[64]; + union { + struct sockaddr_in in4; + struct sockaddr_in6 in6; + } src; + + msg.msg_name = &src; + msg.msg_namelen = sizeof(src); + iov.iov_base = buffer; + iov.iov_len = sizeof(buffer); + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_control = ancillary; + msg.msg_controllen = sizeof(ancillary); + msg.msg_flags = 0; + len = recvmsg(skt->fd, &msg, 0); + if (len < 0) + { + DBG1(DBG_NET, "error reading socket: %s", strerror(errno)); + return NULL; + } + DBG3(DBG_NET, "received packet %b", buffer, len); + + if (len < MARKER_LEN) + { + DBG3(DBG_NET, "received packet too short (%d bytes)", len); + return NULL; + } + + /* read ancillary data to get destination address */ + for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL; + cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) + { + if (cmsgptr->cmsg_len == 0) + { + DBG1(DBG_NET, "error reading ancillary data"); + return NULL; + } + + if (cmsgptr->cmsg_level == SOL_IPV6 && + cmsgptr->cmsg_type == IPV6_PKTINFO) + { + struct in6_pktinfo *pktinfo; + struct sockaddr_in6 dst; + + pktinfo = (struct in6_pktinfo*)CMSG_DATA(cmsgptr); + memset(&dst, 0, sizeof(dst)); + memcpy(&dst.sin6_addr, &pktinfo->ipi6_addr, sizeof(dst.sin6_addr)); + dst.sin6_family = AF_INET6; + dst.sin6_port = htons(skt->port); + dest = host_create_from_sockaddr((sockaddr_t*)&dst); + } + if (cmsgptr->cmsg_level == SOL_IP && + cmsgptr->cmsg_type == IP_PKTINFO) + { + struct in_pktinfo *pktinfo; + struct sockaddr_in dst; + + pktinfo = (struct in_pktinfo*)CMSG_DATA(cmsgptr); + memset(&dst, 0, sizeof(dst)); + memcpy(&dst.sin_addr, &pktinfo->ipi_addr, sizeof(dst.sin_addr)); + + dst.sin_family = AF_INET; + dst.sin_port = htons(skt->port); + dest = host_create_from_sockaddr((sockaddr_t*)&dst); + } + if (dest) + { + break; + } + } + if (dest == NULL) + { + DBG1(DBG_NET, "error reading IP header"); + return NULL; + } + source = host_create_from_sockaddr((sockaddr_t*)&src); + DBG2(DBG_NET, "received packet: from %#H to %#H", source, dest); + data = chunk_create(buffer, len); + + packet = packet_create(); + packet->set_source(packet, source); + packet->set_destination(packet, dest); + /* we assume a non-ESP marker if none of the ports is on 500 */ + if (dest->get_port(dest) != IKEV2_UDP_PORT && + source->get_port(source) != IKEV2_UDP_PORT) + { + data = chunk_skip(data, MARKER_LEN); + } + packet->set_data(packet, chunk_clone(data)); + return packet; +} + +METHOD(socket_t, receiver, status_t, + private_socket_dynamic_socket_t *this, packet_t **packet) +{ + dynsock_t *selected; + packet_t *pkt; + bool oldstate; + fd_set fds; + int maxfd; + + while (TRUE) + { + maxfd = build_fds(this, &fds); + + DBG2(DBG_NET, "waiting for data on sockets"); + oldstate = thread_cancelability(TRUE); + if (select(maxfd, &fds, NULL, NULL, NULL) <= 0) + { + thread_cancelability(oldstate); + return FAILED; + } + thread_cancelability(oldstate); + + if (FD_ISSET(this->notify[0], &fds)) + { /* got notified, read garbage, rebuild fdset */ + char buf[1]; + + ignore_result(read(this->notify[0], buf, sizeof(buf))); + DBG2(DBG_NET, "rebuilding fdset due to newly bound ports"); + continue; + } + selected = scan_fds(this, &fds); + if (selected) + { + break; + } + } + pkt = receive_packet(this, selected); + if (pkt) + { + *packet = pkt; + return SUCCESS; + } + return FAILED; +} + +/** + * open a socket to send and receive packets + */ +static int open_socket(private_socket_dynamic_socket_t *this, + int family, u_int16_t port) +{ + int on = TRUE, type = UDP_ENCAP_ESPINUDP; + struct sockaddr_storage addr; + socklen_t addrlen; + u_int sol, pktinfo = 0; + int fd; + + memset(&addr, 0, sizeof(addr)); + /* precalculate constants depending on address family */ + switch (family) + { + case AF_INET: + { + struct sockaddr_in *sin = (struct sockaddr_in *)&addr; + sin->sin_family = AF_INET; + sin->sin_addr.s_addr = INADDR_ANY; + sin->sin_port = htons(port); + addrlen = sizeof(struct sockaddr_in); + sol = SOL_IP; + pktinfo = IP_PKTINFO; + break; + } + case AF_INET6: + { + struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&addr; + sin6->sin6_family = AF_INET6; + memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); + sin6->sin6_port = htons(port); + addrlen = sizeof(struct sockaddr_in6); + sol = SOL_IPV6; + pktinfo = IPV6_RECVPKTINFO; + break; + } + default: + return 0; + } + + fd = socket(family, SOCK_DGRAM, IPPROTO_UDP); + if (fd < 0) + { + DBG1(DBG_NET, "could not open socket: %s", strerror(errno)); + return 0; + } + if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*)&on, sizeof(on)) < 0) + { + DBG1(DBG_NET, "unable to set SO_REUSEADDR on socket: %s", strerror(errno)); + close(fd); + return 0; + } + + /* bind the socket */ + if (bind(fd, (struct sockaddr *)&addr, addrlen) < 0) + { + DBG1(DBG_NET, "unable to bind socket: %s", strerror(errno)); + close(fd); + return 0; + } + + /* get additional packet info on receive */ + if (setsockopt(fd, sol, pktinfo, &on, sizeof(on)) < 0) + { + DBG1(DBG_NET, "unable to set IP_PKTINFO on socket: %s", strerror(errno)); + close(fd); + return 0; + } + + if (!charon->kernel_interface->bypass_socket(charon->kernel_interface, + fd, family)) + { + DBG1(DBG_NET, "installing IKE bypass policy failed"); + } + + /* enable UDP decapsulation on each socket */ + if (setsockopt(fd, SOL_UDP, UDP_ENCAP, &type, sizeof(type)) < 0) + { + DBG1(DBG_NET, "unable to set UDP_ENCAP: %s", strerror(errno)); + } + return fd; +} + +/** + * Find/Create a socket to send from host + */ +static dynsock_t *find_socket(private_socket_dynamic_socket_t *this, + int family, u_int16_t port) +{ + dynsock_t *skt, lookup = { + .family = family, + .port = port, + }; + char buf[] = {0x01}; + int fd; + + this->lock->read_lock(this->lock); + skt = this->sockets->get(this->sockets, &lookup); + this->lock->unlock(this->lock); + if (skt) + { + return skt; + } + fd = open_socket(this, family, port); + if (!fd) + { + return NULL; + } + INIT(skt, + .family = family, + .port = port, + .fd = fd, + ); + this->lock->write_lock(this->lock); + this->sockets->put(this->sockets, skt, skt); + this->lock->unlock(this->lock); + /* notify receiver thread to reread socket list */ + ignore_result(write(this->notify[1], buf, sizeof(buf))); + + return skt; +} + +METHOD(socket_t, sender, status_t, + private_socket_dynamic_socket_t *this, packet_t *packet) +{ + dynsock_t *skt; + host_t *src, *dst; + int port, family; + ssize_t len; + chunk_t data, marked; + struct msghdr msg; + struct cmsghdr *cmsg; + struct iovec iov; + + src = packet->get_source(packet); + dst = packet->get_destination(packet); + family = src->get_family(src); + port = src->get_port(src); + skt = find_socket(this, family, port); + if (!skt) + { + return FAILED; + } + + data = packet->get_data(packet); + DBG2(DBG_NET, "sending packet: from %#H to %#H", src, dst); + + /* use non-ESP marker if none of the ports is 500, not for keep alives */ + if (port != IKEV2_UDP_PORT && dst->get_port(dst) != IKEV2_UDP_PORT && + !(data.len == 1 && data.ptr[0] == 0xFF)) + { + /* add non esp marker to packet */ + if (data.len > MAX_PACKET - MARKER_LEN) + { + DBG1(DBG_NET, "unable to send packet: it's too big (%d bytes)", + data.len); + return FAILED; + } + marked = chunk_alloc(data.len + MARKER_LEN); + memset(marked.ptr, 0, MARKER_LEN); + memcpy(marked.ptr + MARKER_LEN, data.ptr, data.len); + /* let the packet do the clean up for us */ + packet->set_data(packet, marked); + data = marked; + } + + memset(&msg, 0, sizeof(struct msghdr)); + msg.msg_name = dst->get_sockaddr(dst);; + msg.msg_namelen = *dst->get_sockaddr_len(dst); + iov.iov_base = data.ptr; + iov.iov_len = data.len; + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_flags = 0; + + if (!src->is_anyaddr(src)) + { + if (family == AF_INET) + { + struct in_addr *addr; + struct sockaddr_in *sin; + char buf[CMSG_SPACE(sizeof(struct in_pktinfo))]; + struct in_pktinfo *pktinfo; + + msg.msg_control = buf; + msg.msg_controllen = sizeof(buf); + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_IP; + cmsg->cmsg_type = IP_PKTINFO; + cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo)); + pktinfo = (struct in_pktinfo*)CMSG_DATA(cmsg); + memset(pktinfo, 0, sizeof(struct in_pktinfo)); + addr = &pktinfo->ipi_spec_dst; + sin = (struct sockaddr_in*)src->get_sockaddr(src); + memcpy(addr, &sin->sin_addr, sizeof(struct in_addr)); + } + else + { + char buf[CMSG_SPACE(sizeof(struct in6_pktinfo))]; + struct in6_pktinfo *pktinfo; + struct sockaddr_in6 *sin; + + msg.msg_control = buf; + msg.msg_controllen = sizeof(buf); + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_IPV6; + cmsg->cmsg_type = IPV6_PKTINFO; + cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); + pktinfo = (struct in6_pktinfo*)CMSG_DATA(cmsg); + memset(pktinfo, 0, sizeof(struct in6_pktinfo)); + sin = (struct sockaddr_in6*)src->get_sockaddr(src); + memcpy(&pktinfo->ipi6_addr, &sin->sin6_addr, sizeof(struct in6_addr)); + } + } + + len = sendmsg(skt->fd, &msg, 0); + if (len != data.len) + { + DBG1(DBG_NET, "error writing to socket: %s", strerror(errno)); + return FAILED; + } + return SUCCESS; +} + +METHOD(socket_dynamic_socket_t, destroy, void, + private_socket_dynamic_socket_t *this) +{ + enumerator_t *enumerator; + dynsock_t *key, *value; + + enumerator = this->sockets->create_enumerator(this->sockets); + while (enumerator->enumerate(enumerator, &key, &value)) + { + close(value->fd); + free(value); + } + enumerator->destroy(enumerator); + this->sockets->destroy(this->sockets); + this->lock->destroy(this->lock); + + close(this->notify[0]); + close(this->notify[1]); + free(this); +} + +/* + * See header for description + */ +socket_dynamic_socket_t *socket_dynamic_socket_create() +{ + private_socket_dynamic_socket_t *this; + + INIT(this, + .public = { + .socket = { + .send = _sender, + .receive = _receiver, + }, + .destroy = _destroy, + }, + .lock = rwlock_create(RWLOCK_TYPE_DEFAULT), + ); + + if (pipe(this->notify) != 0) + { + DBG1(DBG_NET, "creating notify pipe for dynamic socket failed"); + free(this); + return NULL; + } + + this->sockets = hashtable_create((void*)hash, (void*)equals, 8); + + return &this->public; +} + diff --git a/src/libcharon/plugins/socket_dynamic/socket_dynamic_socket.h b/src/libcharon/plugins/socket_dynamic/socket_dynamic_socket.h new file mode 100644 index 000000000..72551e545 --- /dev/null +++ b/src/libcharon/plugins/socket_dynamic/socket_dynamic_socket.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup socket_dynamic_socket socket_dynamic_socket + * @{ @ingroup socket_dynamic + */ + +#ifndef SOCKET_DYNAMIC_SOCKET_H_ +#define SOCKET_DYNAMIC_SOCKET_H_ + +typedef struct socket_dynamic_socket_t socket_dynamic_socket_t; + +#include <network/socket.h> + +/** + * A socket implementation binding to ports on demand as required. + */ +struct socket_dynamic_socket_t { + + /** + * Implements the socket_t interface. + */ + socket_t socket; + + /** + * Destroy a socket_dynamic_socket_t. + */ + void (*destroy)(socket_dynamic_socket_t *this); +}; + +/** + * Create a socket_dynamic_socket instance. + */ +socket_dynamic_socket_t *socket_dynamic_socket_create(); + +#endif /** SOCKET_DYNAMIC_SOCKET_H_ @}*/ diff --git a/src/libcharon/plugins/socket_raw/Makefile.am b/src/libcharon/plugins/socket_raw/Makefile.am new file mode 100644 index 000000000..2109ae5f3 --- /dev/null +++ b/src/libcharon/plugins/socket_raw/Makefile.am @@ -0,0 +1,17 @@ + +INCLUDES = -I${linux_headers} -I$(top_srcdir)/src/libstrongswan \ + -I$(top_srcdir)/src/libhydra -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-socket-raw.la +else +plugin_LTLIBRARIES = libstrongswan-socket-raw.la +endif + +libstrongswan_socket_raw_la_SOURCES = \ + socket_raw_plugin.h socket_raw_plugin.c \ + socket_raw_socket.h socket_raw_socket.c + +libstrongswan_socket_raw_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/socket_raw/Makefile.in b/src/libcharon/plugins/socket_raw/Makefile.in new file mode 100644 index 000000000..65ad6a7a9 --- /dev/null +++ b/src/libcharon/plugins/socket_raw/Makefile.in @@ -0,0 +1,590 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = 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all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/socket_raw/socket_raw_plugin.c b/src/libcharon/plugins/socket_raw/socket_raw_plugin.c new file mode 100644 index 000000000..5b011abcf --- /dev/null +++ b/src/libcharon/plugins/socket_raw/socket_raw_plugin.c @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "socket_raw_plugin.h" + +#include "socket_raw_socket.h" + +#include <daemon.h> + +typedef struct private_socket_raw_plugin_t private_socket_raw_plugin_t; + +/** + * Private data of socket plugin + */ +struct private_socket_raw_plugin_t { + + /** + * Implements plugin interface + */ + socket_raw_plugin_t public; + + /** + * Raw socket instance. + */ + socket_raw_socket_t *socket; +}; + +METHOD(plugin_t, destroy, void, + private_socket_raw_plugin_t *this) +{ + charon->socket->remove_socket(charon->socket, &this->socket->socket); + this->socket->destroy(this->socket); + free(this); +} + +/* + * see header file + */ +plugin_t *socket_raw_plugin_create() +{ + private_socket_raw_plugin_t *this; + + INIT(this, + .public.plugin.destroy = _destroy, + .socket = socket_raw_socket_create(), + ); + + if (!this->socket) + { + free(this); + return NULL; + } + charon->socket->add_socket(charon->socket, &this->socket->socket); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/socket_raw/socket_raw_plugin.h b/src/libcharon/plugins/socket_raw/socket_raw_plugin.h new file mode 100644 index 000000000..a692b7594 --- /dev/null +++ b/src/libcharon/plugins/socket_raw/socket_raw_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup socket_raw socket_raw + * @ingroup cplugins + * + * @defgroup socket_raw_plugin socket_raw_plugin + * @{ @ingroup socket_raw + */ + +#ifndef SOCKET_RAW_PLUGIN_H_ +#define SOCKET_RAW_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct socket_raw_plugin_t socket_raw_plugin_t; + +/** + * RAW socket implementation plugin. + */ +struct socket_raw_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** SOCKET_RAW_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/socket_raw/socket_raw_socket.c b/src/libcharon/plugins/socket_raw/socket_raw_socket.c new file mode 100644 index 000000000..e0155fa87 --- /dev/null +++ b/src/libcharon/plugins/socket_raw/socket_raw_socket.c @@ -0,0 +1,709 @@ +/* + * Copyright (C) 2006 Tobias Brunner, Daniel Roethlisberger + * Copyright (C) 2005-2010 Martin Willi + * Copyright (C) 2005 Jan Hutter + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/* for struct in6_pktinfo */ +#define _GNU_SOURCE + +#include "socket_raw_socket.h" + +#include <sys/types.h> +#include <sys/socket.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <stdlib.h> +#include <fcntl.h> +#include <sys/ioctl.h> +#include <netinet/in.h> +#include <netinet/ip.h> +#include <netinet/ip6.h> +#include <netinet/udp.h> +#include <linux/types.h> +#include <linux/filter.h> +#include <net/if.h> + +#include <daemon.h> +#include <threading/thread.h> + +/* Maximum size of a packet */ +#define MAX_PACKET 5000 + +/* constants for packet handling */ +#define IP_LEN sizeof(struct iphdr) +#define IP6_LEN sizeof(struct ip6_hdr) +#define UDP_LEN sizeof(struct udphdr) +#define MARKER_LEN sizeof(u_int32_t) + +/* offsets for packet handling */ +#define IP_PROTO_OFFSET 9 +#define IP6_PROTO_OFFSET 6 +#define IKE_VERSION_OFFSET 17 +#define IKE_LENGTH_OFFSET 24 + +/* from linux/udp.h */ +#ifndef UDP_ENCAP +#define UDP_ENCAP 100 +#endif /*UDP_ENCAP*/ + +#ifndef UDP_ENCAP_ESPINUDP +#define UDP_ENCAP_ESPINUDP 2 +#endif /*UDP_ENCAP_ESPINUDP*/ + +/* needed for older kernel headers */ +#ifndef IPV6_2292PKTINFO +#define IPV6_2292PKTINFO 2 +#endif /*IPV6_2292PKTINFO*/ + +typedef struct private_socket_raw_socket_t private_socket_raw_socket_t; + +/** + * Private data of an socket_t object + */ +struct private_socket_raw_socket_t { + + /** + * public functions + */ + socket_raw_socket_t public; + + /** + * regular port + */ + int port; + + /** + * port used for nat-t + */ + int natt_port; + + /** + * raw receiver socket for IPv4 + */ + int recv4; + + /** + * raw receiver socket for IPv6 + */ + int recv6; + + /** + * send socket on regular port for IPv4 + */ + int send4; + + /** + * send socket on regular port for IPv6 + */ + int send6; + + /** + * send socket on nat-t port for IPv4 + */ + int send4_natt; + + /** + * send socket on nat-t port for IPv6 + */ + int send6_natt; +}; + +METHOD(socket_t, receiver, status_t, + private_socket_raw_socket_t *this, packet_t **packet) +{ + char buffer[MAX_PACKET]; + chunk_t data; + packet_t *pkt; + struct udphdr *udp; + host_t *source = NULL, *dest = NULL; + int bytes_read = 0, data_offset; + bool oldstate; + fd_set rfds; + + FD_ZERO(&rfds); + + if (this->recv4) + { + FD_SET(this->recv4, &rfds); + } + if (this->recv6) + { + FD_SET(this->recv6, &rfds); + } + + DBG2(DBG_NET, "waiting for data on raw sockets"); + + oldstate = thread_cancelability(TRUE); + if (select(max(this->recv4, this->recv6) + 1, &rfds, NULL, NULL, NULL) <= 0) + { + thread_cancelability(oldstate); + return FAILED; + } + thread_cancelability(oldstate); + + if (this->recv4 && FD_ISSET(this->recv4, &rfds)) + { + /* IPv4 raw sockets return the IP header. We read src/dest + * information directly from the raw header */ + struct iphdr *ip; + struct sockaddr_in src, dst; + + bytes_read = recv(this->recv4, buffer, MAX_PACKET, 0); + if (bytes_read < 0) + { + DBG1(DBG_NET, "error reading from IPv4 socket: %s", strerror(errno)); + return FAILED; + } + DBG3(DBG_NET, "received IPv4 packet %b", buffer, bytes_read); + + /* read source/dest from raw IP/UDP header */ + if (bytes_read < IP_LEN + UDP_LEN + MARKER_LEN) + { + DBG1(DBG_NET, "received IPv4 packet too short (%d bytes)", + bytes_read); + return FAILED; + } + ip = (struct iphdr*) buffer; + udp = (struct udphdr*) (buffer + IP_LEN); + src.sin_family = AF_INET; + src.sin_addr.s_addr = ip->saddr; + src.sin_port = udp->source; + dst.sin_family = AF_INET; + dst.sin_addr.s_addr = ip->daddr; + dst.sin_port = udp->dest; + source = host_create_from_sockaddr((sockaddr_t*)&src); + dest = host_create_from_sockaddr((sockaddr_t*)&dst); + + pkt = packet_create(); + pkt->set_source(pkt, source); + pkt->set_destination(pkt, dest); + DBG2(DBG_NET, "received packet: from %#H to %#H", source, dest); + data_offset = IP_LEN + UDP_LEN; + /* remove non esp marker */ + if (dest->get_port(dest) == IKEV2_NATT_PORT) + { + data_offset += MARKER_LEN; + } + /* fill in packet */ + data.len = bytes_read - data_offset; + data.ptr = malloc(data.len); + memcpy(data.ptr, buffer + data_offset, data.len); + pkt->set_data(pkt, data); + } + else if (this->recv6 && FD_ISSET(this->recv6, &rfds)) + { + /* IPv6 raw sockets return no IP header. We must query + * src/dest via socket options/ancillary data */ + struct msghdr msg; + struct cmsghdr *cmsgptr; + struct sockaddr_in6 src, dst; + struct iovec iov; + char ancillary[64]; + + msg.msg_name = &src; + msg.msg_namelen = sizeof(src); + iov.iov_base = buffer; + iov.iov_len = sizeof(buffer); + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_control = ancillary; + msg.msg_controllen = sizeof(ancillary); + msg.msg_flags = 0; + + bytes_read = recvmsg(this->recv6, &msg, 0); + if (bytes_read < 0) + { + DBG1(DBG_NET, "error reading from IPv6 socket: %s", strerror(errno)); + return FAILED; + } + DBG3(DBG_NET, "received IPv6 packet %b", buffer, bytes_read); + + if (bytes_read < IP_LEN + UDP_LEN + MARKER_LEN) + { + DBG3(DBG_NET, "received IPv6 packet too short (%d bytes)", + bytes_read); + return FAILED; + } + + /* read ancillary data to get destination address */ + for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL; + cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) + { + if (cmsgptr->cmsg_len == 0) + { + DBG1(DBG_NET, "error reading IPv6 ancillary data"); + return FAILED; + } + if (cmsgptr->cmsg_level == SOL_IPV6 && + cmsgptr->cmsg_type == IPV6_2292PKTINFO) + { + struct in6_pktinfo *pktinfo; + pktinfo = (struct in6_pktinfo*)CMSG_DATA(cmsgptr); + + memset(&dst, 0, sizeof(dst)); + memcpy(&dst.sin6_addr, &pktinfo->ipi6_addr, sizeof(dst.sin6_addr)); + dst.sin6_family = AF_INET6; + udp = (struct udphdr*) (buffer); + dst.sin6_port = udp->dest; + src.sin6_port = udp->source; + dest = host_create_from_sockaddr((sockaddr_t*)&dst); + } + } + /* ancillary data missing? */ + if (dest == NULL) + { + DBG1(DBG_NET, "error reading IPv6 packet header"); + return FAILED; + } + + source = host_create_from_sockaddr((sockaddr_t*)&src); + + pkt = packet_create(); + pkt->set_source(pkt, source); + pkt->set_destination(pkt, dest); + DBG2(DBG_NET, "received packet: from %#H to %#H", source, dest); + data_offset = UDP_LEN; + /* remove non esp marker */ + if (dest->get_port(dest) == IKEV2_NATT_PORT) + { + data_offset += MARKER_LEN; + } + /* fill in packet */ + data.len = bytes_read - data_offset; + data.ptr = malloc(data.len); + memcpy(data.ptr, buffer + data_offset, data.len); + pkt->set_data(pkt, data); + } + else + { + /* oops, shouldn't happen */ + return FAILED; + } + + /* return packet */ + *packet = pkt; + return SUCCESS; +} + +METHOD(socket_t, sender, status_t, + private_socket_raw_socket_t *this, packet_t *packet) +{ + int sport, skt, family; + ssize_t bytes_sent; + chunk_t data, marked; + host_t *src, *dst; + struct msghdr msg; + struct cmsghdr *cmsg; + struct iovec iov; + + src = packet->get_source(packet); + dst = packet->get_destination(packet); + data = packet->get_data(packet); + + DBG2(DBG_NET, "sending packet: from %#H to %#H", src, dst); + + /* send data */ + sport = src->get_port(src); + family = dst->get_family(dst); + if (sport == IKEV2_UDP_PORT) + { + if (family == AF_INET) + { + skt = this->send4; + } + else + { + skt = this->send6; + } + } + else if (sport == IKEV2_NATT_PORT) + { + if (family == AF_INET) + { + skt = this->send4_natt; + } + else + { + skt = this->send6_natt; + } + /* NAT keepalives without marker */ + if (data.len != 1 || data.ptr[0] != 0xFF) + { + /* add non esp marker to packet */ + if (data.len > MAX_PACKET - MARKER_LEN) + { + DBG1(DBG_NET, "unable to send packet: it's too big (%d bytes)", + data.len); + return FAILED; + } + marked = chunk_alloc(data.len + MARKER_LEN); + memset(marked.ptr, 0, MARKER_LEN); + memcpy(marked.ptr + MARKER_LEN, data.ptr, data.len); + /* let the packet do the clean up for us */ + packet->set_data(packet, marked); + data = marked; + } + } + else + { + DBG1(DBG_NET, "unable to locate a send socket for port %d", sport); + return FAILED; + } + + memset(&msg, 0, sizeof(struct msghdr)); + msg.msg_name = dst->get_sockaddr(dst);; + msg.msg_namelen = *dst->get_sockaddr_len(dst); + iov.iov_base = data.ptr; + iov.iov_len = data.len; + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_flags = 0; + + if (!src->is_anyaddr(src)) + { + if (family == AF_INET) + { + char buf[CMSG_SPACE(sizeof(struct in_pktinfo))]; + struct in_pktinfo *pktinfo; + struct sockaddr_in *sin; + + msg.msg_control = buf; + msg.msg_controllen = sizeof(buf); + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_IP; + cmsg->cmsg_type = IP_PKTINFO; + cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo)); + pktinfo = (struct in_pktinfo*)CMSG_DATA(cmsg); + memset(pktinfo, 0, sizeof(struct in_pktinfo)); + sin = (struct sockaddr_in*)src->get_sockaddr(src); + memcpy(&pktinfo->ipi_spec_dst, &sin->sin_addr, sizeof(struct in_addr)); + } + else + { + char buf[CMSG_SPACE(sizeof(struct in6_pktinfo))]; + struct in6_pktinfo *pktinfo; + struct sockaddr_in6 *sin; + + msg.msg_control = buf; + msg.msg_controllen = sizeof(buf); + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_IPV6; + cmsg->cmsg_type = IPV6_2292PKTINFO; + cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); + pktinfo = (struct in6_pktinfo*)CMSG_DATA(cmsg); + memset(pktinfo, 0, sizeof(struct in6_pktinfo)); + sin = (struct sockaddr_in6*)src->get_sockaddr(src); + memcpy(&pktinfo->ipi6_addr, &sin->sin6_addr, sizeof(struct in6_addr)); + } + } + + bytes_sent = sendmsg(skt, &msg, 0); + + if (bytes_sent != data.len) + { + DBG1(DBG_NET, "error writing to socket: %s", strerror(errno)); + return FAILED; + } + return SUCCESS; +} + +/** + * open a socket to send packets + */ +static int open_send_socket(private_socket_raw_socket_t *this, + int family, u_int16_t port) +{ + int on = TRUE; + int type = UDP_ENCAP_ESPINUDP; + struct sockaddr_storage addr; + u_int sol; + int skt; + + memset(&addr, 0, sizeof(addr)); + /* precalculate constants depending on address family */ + switch (family) + { + case AF_INET: + { + struct sockaddr_in *sin = (struct sockaddr_in *)&addr; + sin->sin_family = AF_INET; + sin->sin_addr.s_addr = INADDR_ANY; + sin->sin_port = htons(port); + sol = SOL_IP; + break; + } + case AF_INET6: + { + struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&addr; + sin6->sin6_family = AF_INET6; + memcpy(&sin6->sin6_addr, &in6addr_any, sizeof(in6addr_any)); + sin6->sin6_port = htons(port); + sol = SOL_IPV6; + break; + } + default: + return 0; + } + + skt = socket(family, SOCK_DGRAM, IPPROTO_UDP); + if (skt < 0) + { + DBG1(DBG_NET, "could not open send socket: %s", strerror(errno)); + return 0; + } + + if (setsockopt(skt, SOL_SOCKET, SO_REUSEADDR, (void*)&on, sizeof(on)) < 0) + { + DBG1(DBG_NET, "unable to set SO_REUSEADDR on send socket: %s", + strerror(errno)); + close(skt); + return 0; + } + + /* bind the send socket */ + if (bind(skt, (struct sockaddr *)&addr, sizeof(addr)) < 0) + { + DBG1(DBG_NET, "unable to bind send socket: %s", + strerror(errno)); + close(skt); + return 0; + } + + if (family == AF_INET) + { + /* enable UDP decapsulation globally, only for one socket needed */ + if (setsockopt(skt, SOL_UDP, UDP_ENCAP, &type, sizeof(type)) < 0) + { + DBG1(DBG_NET, "unable to set UDP_ENCAP: %s; NAT-T may fail", + strerror(errno)); + } + } + + if (!charon->kernel_interface->bypass_socket(charon->kernel_interface, + skt, family)) + { + DBG1(DBG_NET, "installing bypass policy on send socket failed"); + } + + return skt; +} + +/** + * open a socket to receive packets + */ +static int open_recv_socket(private_socket_raw_socket_t *this, int family) +{ + int skt; + int on = TRUE; + u_int proto_offset, ip_len, sol, udp_header, ike_header; + + /* precalculate constants depending on address family */ + switch (family) + { + case AF_INET: + proto_offset = IP_PROTO_OFFSET; + ip_len = IP_LEN; + sol = SOL_IP; + break; + case AF_INET6: + proto_offset = IP6_PROTO_OFFSET; + ip_len = 0; /* IPv6 raw sockets contain no IP header */ + sol = SOL_IPV6; + break; + default: + return 0; + } + udp_header = ip_len; + ike_header = ip_len + UDP_LEN; + + /* This filter code filters out all non-IKEv2 traffic on + * a SOCK_RAW IP_PROTP_UDP socket. Handling of other + * IKE versions is done in pluto. + */ + struct sock_filter ikev2_filter_code[] = + { + /* Destination Port must be either port or natt_port */ + BPF_STMT(BPF_LD+BPF_H+BPF_ABS, udp_header + 2), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, IKEV2_UDP_PORT, 1, 0), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, IKEV2_NATT_PORT, 5, 12), + /* port */ + /* IKE version must be 2.0 */ + BPF_STMT(BPF_LD+BPF_B+BPF_ABS, ike_header + IKE_VERSION_OFFSET), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x20, 0, 10), + /* packet length is length in IKEv2 header + ip header + udp header */ + BPF_STMT(BPF_LD+BPF_W+BPF_ABS, ike_header + IKE_LENGTH_OFFSET), + BPF_STMT(BPF_ALU+BPF_ADD+BPF_K, ip_len + UDP_LEN), + BPF_STMT(BPF_RET+BPF_A, 0), + /* natt_port */ + /* nat-t: check for marker */ + BPF_STMT(BPF_LD+BPF_W+BPF_ABS, ike_header), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0, 0, 5), + /* nat-t: IKE version must be 2.0 */ + BPF_STMT(BPF_LD+BPF_B+BPF_ABS, ike_header + MARKER_LEN + IKE_VERSION_OFFSET), + BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x20, 0, 3), + /* nat-t: packet length is length in IKEv2 header + ip header + udp header + non esp marker */ + BPF_STMT(BPF_LD+BPF_W+BPF_ABS, ike_header + MARKER_LEN + IKE_LENGTH_OFFSET), + BPF_STMT(BPF_ALU+BPF_ADD+BPF_K, ip_len + UDP_LEN + MARKER_LEN), + BPF_STMT(BPF_RET+BPF_A, 0), + /* packet doesn't match, ignore */ + BPF_STMT(BPF_RET+BPF_K, 0), + }; + + /* Filter struct to use with setsockopt */ + struct sock_fprog ikev2_filter = { + sizeof(ikev2_filter_code) / sizeof(struct sock_filter), + ikev2_filter_code + }; + + /* set up a raw socket */ + skt = socket(family, SOCK_RAW, IPPROTO_UDP); + if (skt < 0) + { + DBG1(DBG_NET, "unable to create raw socket: %s", strerror(errno)); + return 0; + } + + if (setsockopt(skt, SOL_SOCKET, SO_ATTACH_FILTER, + &ikev2_filter, sizeof(ikev2_filter)) < 0) + { + DBG1(DBG_NET, "unable to attach IKEv2 filter to raw socket: %s", + strerror(errno)); + close(skt); + return 0; + } + + if (family == AF_INET6 && + /* we use IPV6_2292PKTINFO, as IPV6_PKTINFO is defined as + * 2 or 50 depending on kernel header version */ + setsockopt(skt, sol, IPV6_2292PKTINFO, &on, sizeof(on)) < 0) + { + DBG1(DBG_NET, "unable to set IPV6_PKTINFO on raw socket: %s", + strerror(errno)); + close(skt); + return 0; + } + + if (!charon->kernel_interface->bypass_socket(charon->kernel_interface, + skt, family)) + { + DBG1(DBG_NET, "installing bypass policy on receive socket failed"); + } + + return skt; +} + +METHOD(socket_raw_socket_t, destroy, void, + private_socket_raw_socket_t *this) +{ + if (this->recv4) + { + close(this->recv4); + } + if (this->recv6) + { + close(this->recv6); + } + if (this->send4) + { + close(this->send4); + } + if (this->send6) + { + close(this->send6); + } + if (this->send4_natt) + { + close(this->send4_natt); + } + if (this->send6_natt) + { + close(this->send6_natt); + } + free(this); +} + +/* + * See header for description + */ +socket_raw_socket_t *socket_raw_socket_create() +{ + private_socket_raw_socket_t *this; + + INIT(this, + .public = { + .socket = { + .send = _sender, + .receive = _receiver, + }, + .destroy = _destroy, + }, + ); + + this->recv4 = open_recv_socket(this, AF_INET); + if (this->recv4 == 0) + { + DBG1(DBG_NET, "could not open IPv4 receive socket, IPv4 disabled"); + } + else + { + this->send4 = open_send_socket(this, AF_INET, IKEV2_UDP_PORT); + if (this->send4 == 0) + { + DBG1(DBG_NET, "could not open IPv4 send socket, IPv4 disabled"); + close(this->recv4); + } + else + { + this->send4_natt = open_send_socket(this, AF_INET, IKEV2_NATT_PORT); + if (this->send4_natt == 0) + { + DBG1(DBG_NET, "could not open IPv4 NAT-T send socket"); + } + } + } + + this->recv6 = open_recv_socket(this, AF_INET6); + if (this->recv6 == 0) + { + DBG1(DBG_NET, "could not open IPv6 receive socket, IPv6 disabled"); + } + else + { + this->send6 = open_send_socket(this, AF_INET6, IKEV2_UDP_PORT); + if (this->send6 == 0) + { + DBG1(DBG_NET, "could not open IPv6 send socket, IPv6 disabled"); + close(this->recv6); + } + else + { + this->send6_natt = open_send_socket(this, AF_INET6, IKEV2_NATT_PORT); + if (this->send6_natt == 0) + { + DBG1(DBG_NET, "could not open IPv6 NAT-T send socket"); + } + } + } + + if (!(this->send4 || this->send6) || !(this->recv4 || this->recv6)) + { + DBG1(DBG_NET, "could not create any sockets"); + destroy(this); + return NULL; + } + + return &this->public; +} diff --git a/src/libcharon/plugins/socket_raw/socket_raw_socket.h b/src/libcharon/plugins/socket_raw/socket_raw_socket.h new file mode 100644 index 000000000..94cf666e8 --- /dev/null +++ b/src/libcharon/plugins/socket_raw/socket_raw_socket.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2010 Martin Willi + * Copyright (C) 2010 revosec AG + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup socket_raw_socket socket_raw_socket + * @{ @ingroup socket_raw + */ + +#ifndef SOCKET_RAW_SOCKET_H_ +#define SOCKET_RAW_SOCKET_H_ + +typedef struct socket_raw_socket_t socket_raw_socket_t; + +#include <network/socket.h> + +/** + * Raw socket, binds to port 500/4500 using any IPv4/IPv6 address. + * + * This imeplementation uses raw sockets to allow binding of other daemons + * (pluto) to UDP/500/4500. An installed "Linux socket filter" filters out + * all non-IKEv2 traffic and handles just IKEv2 messages. An other daemon + * must handle all traffic separately, e.g. ignore IKEv2 traffic, since charon + * handles that. + */ +struct socket_raw_socket_t { + + /** + * Implements the socket_t interface. + */ + socket_t socket; + + /** + * Destroy a socket_raw_socket_t. + */ + void (*destroy)(socket_raw_socket_t *this); +}; + +/** + * Create a socket_raw_socket instance. + */ +socket_raw_socket_t *socket_raw_socket_create(); + +#endif /** SOCKET_RAW_SOCKET_H_ @}*/ diff --git a/src/libcharon/plugins/sql/Makefile.am b/src/libcharon/plugins/sql/Makefile.am new file mode 100644 index 000000000..68b7e8cb2 --- /dev/null +++ b/src/libcharon/plugins/sql/Makefile.am @@ -0,0 +1,18 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic \ + -DPLUGINS=\""${libstrongswan_plugins}\"" + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-sql.la +else +plugin_LTLIBRARIES = libstrongswan-sql.la +endif + +libstrongswan_sql_la_SOURCES = \ + sql_plugin.h sql_plugin.c sql_config.h sql_config.c \ + sql_cred.h sql_cred.c sql_logger.h sql_logger.c + +libstrongswan_sql_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/sql/Makefile.in b/src/libcharon/plugins/sql/Makefile.in new file mode 100644 index 000000000..5803dc898 --- /dev/null +++ b/src/libcharon/plugins/sql/Makefile.in @@ -0,0 +1,591 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied 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distclean-tags distdir dvi dvi-am html \ + html-am info info-am install install-am install-data \ + install-data-am install-dvi install-dvi-am install-exec \ + install-exec-am install-html install-html-am install-info \ + install-info-am install-man install-pdf install-pdf-am \ + install-pluginLTLIBRARIES install-ps install-ps-am \ + install-strip installcheck installcheck-am installdirs \ + maintainer-clean maintainer-clean-generic mostlyclean \ + mostlyclean-compile mostlyclean-generic mostlyclean-libtool \ + pdf pdf-am ps ps-am tags uninstall uninstall-am \ + uninstall-pluginLTLIBRARIES + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/sql/sql_config.c b/src/libcharon/plugins/sql/sql_config.c new file mode 100644 index 000000000..23366898a --- /dev/null +++ b/src/libcharon/plugins/sql/sql_config.c @@ -0,0 +1,535 @@ +/* + * Copyright (C) 2006-2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <string.h> + +#include "sql_config.h" + +#include <daemon.h> + +typedef struct private_sql_config_t private_sql_config_t; + +/** + * Private data of an sql_config_t object + */ +struct private_sql_config_t { + + /** + * Public part + */ + sql_config_t public; + + /** + * database connection + */ + database_t *db; +}; + +/** + * forward declaration + */ +static peer_cfg_t *build_peer_cfg(private_sql_config_t *this, enumerator_t *e, + identification_t *me, identification_t *other); + +/** + * build a traffic selector from a SQL query + */ +static traffic_selector_t *build_traffic_selector(private_sql_config_t *this, + enumerator_t *e, bool *local) +{ + int type, protocol, start_port, end_port; + chunk_t start_addr, end_addr; + traffic_selector_t *ts; + enum { + TS_LOCAL = 0, + TS_REMOTE = 1, + TS_LOCAL_DYNAMIC = 2, + TS_REMOTE_DYNAMIC = 3, + } kind; + + while (e->enumerate(e, &kind, &type, &protocol, + &start_addr, &end_addr, &start_port, &end_port)) + { + *local = FALSE; + switch (kind) + { + case TS_LOCAL: + *local = TRUE; + /* FALL */ + case TS_REMOTE: + ts = traffic_selector_create_from_bytes(protocol, type, + start_addr, start_port, end_addr, end_port); + break; + case TS_LOCAL_DYNAMIC: + *local = TRUE; + /* FALL */ + case TS_REMOTE_DYNAMIC: + ts = traffic_selector_create_dynamic(protocol, + start_port, end_port); + break; + default: + continue; + } + if (ts) + { + return ts; + } + } + return NULL; +} + +/** + * Add traffic selectors to a child config + */ +static void add_traffic_selectors(private_sql_config_t *this, + child_cfg_t *child, int id) +{ + enumerator_t *e; + traffic_selector_t *ts; + bool local; + + e = this->db->query(this->db, + "SELECT kind, type, protocol, " + "start_addr, end_addr, start_port, end_port " + "FROM traffic_selectors JOIN child_config_traffic_selector " + "ON id = traffic_selector WHERE child_cfg = ?", + DB_INT, id, + DB_INT, DB_INT, DB_INT, + DB_BLOB, DB_BLOB, DB_INT, DB_INT); + if (e) + { + while ((ts = build_traffic_selector(this, e, &local))) + { + child->add_traffic_selector(child, local, ts); + } + e->destroy(e); + } +} + +/** + * build a Child configuration from a SQL query + */ +static child_cfg_t *build_child_cfg(private_sql_config_t *this, enumerator_t *e) +{ + int id, lifetime, rekeytime, jitter, hostaccess, mode, dpd, close, ipcomp; + char *name, *updown; + child_cfg_t *child_cfg; + + if (e->enumerate(e, &id, &name, &lifetime, &rekeytime, &jitter, + &updown, &hostaccess, &mode, &dpd, &close, &ipcomp)) + { + lifetime_cfg_t lft = { + .time = { .life = lifetime, .rekey = rekeytime, .jitter = jitter } + }; + child_cfg = child_cfg_create(name, &lft, updown, hostaccess, mode, + dpd, close, ipcomp, 0); + /* TODO: read proposal from db */ + child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP)); + add_traffic_selectors(this, child_cfg, id); + return child_cfg; + } + return NULL; +} + +/** + * Add child configs to peer config + */ +static void add_child_cfgs(private_sql_config_t *this, peer_cfg_t *peer, int id) +{ + enumerator_t *e; + child_cfg_t *child_cfg; + + e = this->db->query(this->db, + "SELECT id, name, lifetime, rekeytime, jitter, " + "updown, hostaccess, mode, dpd_action, close_action, ipcomp " + "FROM child_configs JOIN peer_config_child_config ON id = child_cfg " + "WHERE peer_cfg = ?", + DB_INT, id, + DB_INT, DB_TEXT, DB_INT, DB_INT, DB_INT, + DB_TEXT, DB_INT, DB_INT, DB_INT, DB_INT, DB_INT); + if (e) + { + while ((child_cfg = build_child_cfg(this, e))) + { + peer->add_child_cfg(peer, child_cfg); + } + e->destroy(e); + } +} + +/** + * build a ike configuration from a SQL query + */ +static ike_cfg_t *build_ike_cfg(private_sql_config_t *this, enumerator_t *e, + host_t *my_host, host_t *other_host) +{ + int certreq, force_encap; + char *local, *remote; + + while (e->enumerate(e, &certreq, &force_encap, &local, &remote)) + { + ike_cfg_t *ike_cfg; + + ike_cfg = ike_cfg_create(certreq, force_encap, + local, IKEV2_UDP_PORT, remote, IKEV2_UDP_PORT); + /* TODO: read proposal from db */ + ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE)); + return ike_cfg; + } + return NULL; +} + +/** + * Query a IKE config by its id + */ +static ike_cfg_t* get_ike_cfg_by_id(private_sql_config_t *this, int id) +{ + enumerator_t *e; + ike_cfg_t *ike_cfg = NULL; + + e = this->db->query(this->db, + "SELECT certreq, force_encap, local, remote " + "FROM ike_configs WHERE id = ?", + DB_INT, id, + DB_INT, DB_INT, DB_TEXT, DB_TEXT); + if (e) + { + ike_cfg = build_ike_cfg(this, e, NULL, NULL); + e->destroy(e); + } + return ike_cfg; +} + +/** + * Query a peer config by its id + */ +static peer_cfg_t *get_peer_cfg_by_id(private_sql_config_t *this, int id) +{ + enumerator_t *e; + peer_cfg_t *peer_cfg = NULL; + + e = this->db->query(this->db, + "SELECT c.id, name, ike_cfg, l.type, l.data, r.type, r.data, " + "cert_policy, uniqueid, auth_method, eap_type, eap_vendor, " + "keyingtries, rekeytime, reauthtime, jitter, overtime, mobike, " + "dpd_delay, virtual, pool, " + "mediation, mediated_by, COALESCE(p.type, 0), p.data " + "FROM peer_configs AS c " + "JOIN identities AS l ON local_id = l.id " + "JOIN identities AS r ON remote_id = r.id " + "LEFT JOIN identities AS p ON peer_id = p.id " + "WHERE id = ?", + DB_INT, id, + DB_INT, DB_TEXT, DB_INT, DB_INT, DB_BLOB, DB_INT, DB_BLOB, + DB_INT, DB_INT, DB_INT, DB_INT, DB_INT, + DB_INT, DB_INT, DB_INT, DB_INT, DB_INT, DB_INT, + DB_INT, DB_TEXT, DB_TEXT, + DB_INT, DB_INT, DB_INT, DB_BLOB); + if (e) + { + peer_cfg = build_peer_cfg(this, e, NULL, NULL); + e->destroy(e); + } + return peer_cfg; +} + +/** + * build a peer configuration from a SQL query + */ +static peer_cfg_t *build_peer_cfg(private_sql_config_t *this, enumerator_t *e, + identification_t *me, identification_t *other) +{ + int id, ike_cfg, l_type, r_type, + cert_policy, uniqueid, auth_method, eap_type, eap_vendor, keyingtries, + rekeytime, reauthtime, jitter, overtime, mobike, dpd_delay, + mediation, mediated_by, p_type; + chunk_t l_data, r_data, p_data; + char *name, *virtual, *pool; + + while (e->enumerate(e, + &id, &name, &ike_cfg, &l_type, &l_data, &r_type, &r_data, + &cert_policy, &uniqueid, &auth_method, &eap_type, &eap_vendor, + &keyingtries, &rekeytime, &reauthtime, &jitter, &overtime, &mobike, + &dpd_delay, &virtual, &pool, + &mediation, &mediated_by, &p_type, &p_data)) + { + identification_t *local_id, *remote_id, *peer_id = NULL; + peer_cfg_t *peer_cfg, *mediated_cfg; + ike_cfg_t *ike; + host_t *vip = NULL; + auth_cfg_t *auth; + + local_id = identification_create_from_encoding(l_type, l_data); + remote_id = identification_create_from_encoding(r_type, r_data); + if ((me && !me->matches(me, local_id)) || + (other && !other->matches(other, remote_id))) + { + local_id->destroy(local_id); + remote_id->destroy(remote_id); + continue; + } + ike = get_ike_cfg_by_id(this, ike_cfg); + mediated_cfg = mediated_by ? get_peer_cfg_by_id(this, mediated_by) : NULL; + if (p_type) + { + peer_id = identification_create_from_encoding(p_type, p_data); + } + if (virtual) + { + vip = host_create_from_string(virtual, 0); + } + if (ike) + { + peer_cfg = peer_cfg_create( + name, 2, ike, cert_policy, uniqueid, + keyingtries, rekeytime, reauthtime, jitter, overtime, + mobike, dpd_delay, vip, pool, + mediation, mediated_cfg, peer_id); + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_AUTH_CLASS, auth_method); + auth->add(auth, AUTH_RULE_IDENTITY, local_id); + peer_cfg->add_auth_cfg(peer_cfg, auth, TRUE); + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_IDENTITY, remote_id); + if (eap_type) + { + auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_EAP); + auth->add(auth, AUTH_RULE_EAP_TYPE, eap_type); + if (eap_vendor) + { + auth->add(auth, AUTH_RULE_EAP_VENDOR, eap_vendor); + } + } + peer_cfg->add_auth_cfg(peer_cfg, auth, FALSE); + add_child_cfgs(this, peer_cfg, id); + return peer_cfg; + } + DESTROY_IF(ike); + DESTROY_IF(mediated_cfg); + DESTROY_IF(peer_id); + DESTROY_IF(local_id); + DESTROY_IF(remote_id); + } + return NULL; +} + +/** + * implements backend_t.get_peer_cfg_by_name. + */ +static peer_cfg_t *get_peer_cfg_by_name(private_sql_config_t *this, char *name) +{ + enumerator_t *e; + peer_cfg_t *peer_cfg = NULL; + + e = this->db->query(this->db, + "SELECT c.id, name, ike_cfg, l.type, l.data, r.type, r.data, " + "cert_policy, uniqueid, auth_method, eap_type, eap_vendor, " + "keyingtries, rekeytime, reauthtime, jitter, overtime, mobike, " + "dpd_delay, virtual, pool, " + "mediation, mediated_by, COALESCE(p.type, 0), p.data " + "FROM peer_configs AS c " + "JOIN identities AS l ON local_id = l.id " + "JOIN identities AS r ON remote_id = r.id " + "LEFT JOIN identities AS p ON peer_id = p.id " + "WHERE ike_version = ? AND name = ?", + DB_INT, 2, DB_TEXT, name, + DB_INT, DB_TEXT, DB_INT, DB_INT, DB_BLOB, DB_INT, DB_BLOB, + DB_INT, DB_INT, DB_INT, DB_INT, DB_INT, + DB_INT, DB_INT, DB_INT, DB_INT, DB_INT, DB_INT, + DB_INT, DB_TEXT, DB_TEXT, + DB_INT, DB_INT, DB_INT, DB_BLOB); + if (e) + { + peer_cfg = build_peer_cfg(this, e, NULL, NULL); + e->destroy(e); + } + return peer_cfg; +} + +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** reference to context */ + private_sql_config_t *this; + /** filtering own host */ + host_t *me; + /** filtering remote host */ + host_t *other; + /** inner SQL enumerator */ + enumerator_t *inner; + /** currently enumerated peer config */ + ike_cfg_t *current; +} ike_enumerator_t; + +/** + * Implementation of ike_enumerator_t.public.enumerate + */ +static bool ike_enumerator_enumerate(ike_enumerator_t *this, ike_cfg_t **cfg) +{ + DESTROY_IF(this->current); + this->current = build_ike_cfg(this->this, this->inner, this->me, this->other); + if (this->current) + { + *cfg = this->current; + return TRUE; + } + return FALSE; +} + +/** + * Implementation of ike_enumerator_t.public.destroy + */ +static void ike_enumerator_destroy(ike_enumerator_t *this) +{ + DESTROY_IF(this->current); + this->inner->destroy(this->inner); + free(this); +} + +/** + * Implementation of backend_t.create_ike_cfg_enumerator. + */ +static enumerator_t* create_ike_cfg_enumerator(private_sql_config_t *this, + host_t *me, host_t *other) +{ + ike_enumerator_t *e = malloc_thing(ike_enumerator_t); + + e->this = this; + e->me = me; + e->other = other; + e->current = NULL; + e->public.enumerate = (void*)ike_enumerator_enumerate; + e->public.destroy = (void*)ike_enumerator_destroy; + + e->inner = this->db->query(this->db, + "SELECT certreq, force_encap, local, remote " + "FROM ike_configs", + DB_INT, DB_INT, DB_TEXT, DB_TEXT); + if (!e->inner) + { + free(e); + return NULL; + } + return &e->public; +} + + +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** reference to context */ + private_sql_config_t *this; + /** filtering own identity */ + identification_t *me; + /** filtering remote identity */ + identification_t *other; + /** inner SQL enumerator */ + enumerator_t *inner; + /** currently enumerated peer config */ + peer_cfg_t *current; +} peer_enumerator_t; + +/** + * Implementation of peer_enumerator_t.public.enumerate + */ +static bool peer_enumerator_enumerate(peer_enumerator_t *this, peer_cfg_t **cfg) +{ + DESTROY_IF(this->current); + this->current = build_peer_cfg(this->this, this->inner, this->me, this->other); + if (this->current) + { + *cfg = this->current; + return TRUE; + } + return FALSE; +} + +/** + * Implementation of peer_enumerator_t.public.destroy + */ +static void peer_enumerator_destroy(peer_enumerator_t *this) +{ + DESTROY_IF(this->current); + this->inner->destroy(this->inner); + free(this); +} + +/** + * Implementation of backend_t.create_peer_cfg_enumerator. + */ +static enumerator_t* create_peer_cfg_enumerator(private_sql_config_t *this, + identification_t *me, + identification_t *other) +{ + peer_enumerator_t *e = malloc_thing(peer_enumerator_t); + + e->this = this; + e->me = me; + e->other = other; + e->current = NULL; + e->public.enumerate = (void*)peer_enumerator_enumerate; + e->public.destroy = (void*)peer_enumerator_destroy; + + /* TODO: only get configs whose IDs match exactly or contain wildcards */ + e->inner = this->db->query(this->db, + "SELECT c.id, name, ike_cfg, l.type, l.data, r.type, r.data, " + "cert_policy, uniqueid, auth_method, eap_type, eap_vendor, " + "keyingtries, rekeytime, reauthtime, jitter, overtime, mobike, " + "dpd_delay, virtual, pool, " + "mediation, mediated_by, COALESCE(p.type, 0), p.data " + "FROM peer_configs AS c " + "JOIN identities AS l ON local_id = l.id " + "JOIN identities AS r ON remote_id = r.id " + "LEFT JOIN identities AS p ON peer_id = p.id " + "WHERE ike_version = ?", + DB_INT, 2, + DB_INT, DB_TEXT, DB_INT, DB_INT, DB_BLOB, DB_INT, DB_BLOB, + DB_INT, DB_INT, DB_INT, DB_INT, DB_INT, + DB_INT, DB_INT, DB_INT, DB_INT, DB_INT, DB_INT, + DB_INT, DB_TEXT, DB_TEXT, + DB_INT, DB_INT, DB_INT, DB_BLOB); + if (!e->inner) + { + free(e); + return NULL; + } + return &e->public; +} + +/** + * Implementation of sql_config_t.destroy. + */ +static void destroy(private_sql_config_t *this) +{ + free(this); +} + +/** + * Described in header. + */ +sql_config_t *sql_config_create(database_t *db) +{ + private_sql_config_t *this = malloc_thing(private_sql_config_t); + + this->public.backend.create_peer_cfg_enumerator = (enumerator_t*(*)(backend_t*, identification_t *me, identification_t *other))create_peer_cfg_enumerator; + this->public.backend.create_ike_cfg_enumerator = (enumerator_t*(*)(backend_t*, host_t *me, host_t *other))create_ike_cfg_enumerator; + this->public.backend.get_peer_cfg_by_name = (peer_cfg_t* (*)(backend_t*,char*))get_peer_cfg_by_name; + this->public.destroy = (void(*)(sql_config_t*))destroy; + + this->db = db; + + return &this->public; +} + diff --git a/src/libcharon/plugins/sql/sql_config.h b/src/libcharon/plugins/sql/sql_config.h new file mode 100644 index 000000000..700d00a97 --- /dev/null +++ b/src/libcharon/plugins/sql/sql_config.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup sql_config_i sql_config + * @{ @ingroup sql + */ + +#ifndef SQL_CONFIG_H_ +#define SQL_CONFIG_H_ + +#include <config/backend.h> +#include <database/database.h> + +typedef struct sql_config_t sql_config_t; + +/** + * SQL database configuration backend. + */ +struct sql_config_t { + + /** + * Implements backend_t interface + */ + backend_t backend; + + /** + * Destry the backend. + */ + void (*destroy)(sql_config_t *this); +}; + +/** + * Create a sql_config backend instance. + * + * @param db underlying database + * @return backend instance + */ +sql_config_t *sql_config_create(database_t *db); + +#endif /** SQL_CONFIG_H_ @}*/ diff --git a/src/libcharon/plugins/sql/sql_cred.c b/src/libcharon/plugins/sql/sql_cred.c new file mode 100644 index 000000000..12f4ab045 --- /dev/null +++ b/src/libcharon/plugins/sql/sql_cred.c @@ -0,0 +1,365 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <string.h> + +#include "sql_cred.h" + +#include <daemon.h> + +typedef struct private_sql_cred_t private_sql_cred_t; + +/** + * Private data of an sql_cred_t object + */ +struct private_sql_cred_t { + + /** + * Public part + */ + sql_cred_t public; + + /** + * database connection + */ + database_t *db; +}; + +/** + * enumerator over private keys + */ +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** inner SQL enumerator */ + enumerator_t *inner; + /** currently enumerated private key */ + private_key_t *current; +} private_enumerator_t; + +/** + * Implementation of private_enumerator_t.public.enumerate + */ +static bool private_enumerator_enumerate(private_enumerator_t *this, + private_key_t **key) +{ + chunk_t blob; + int type; + + DESTROY_IF(this->current); + while (this->inner->enumerate(this->inner, &type, &blob)) + { + this->current = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, type, + BUILD_BLOB_ASN1_DER, blob, + BUILD_END); + if (this->current) + { + *key = this->current; + return TRUE; + } + } + this->current = NULL; + return FALSE; +} + +/** + * Implementation of private_enumerator_t.public.destroy + */ +static void private_enumerator_destroy(private_enumerator_t *this) +{ + DESTROY_IF(this->current); + this->inner->destroy(this->inner); + free(this); +} + +/** + * Implementation of credential_set_t.create_private_enumerator. + */ +static enumerator_t* create_private_enumerator(private_sql_cred_t *this, + key_type_t type, + identification_t *id) +{ + private_enumerator_t *e; + + e = malloc_thing(private_enumerator_t); + e->current = NULL; + e->public.enumerate = (void*)private_enumerator_enumerate; + e->public.destroy = (void*)private_enumerator_destroy; + if (id && id->get_type(id) != ID_ANY) + { + e->inner = this->db->query(this->db, + "SELECT p.type, p.data FROM private_keys AS p " + "JOIN private_key_identity AS pi ON p.id = pi.private_key " + "JOIN identities AS i ON pi.identity = i.id " + "WHERE i.type = ? AND i.data = ? AND (? OR p.type = ?)", + DB_INT, id->get_type(id), DB_BLOB, id->get_encoding(id), + DB_INT, type == KEY_ANY, DB_INT, type, + DB_INT, DB_BLOB); + } + else + { + e->inner = this->db->query(this->db, + "SELECT type, data FROM private_keys WHERE (? OR type = ?)", + DB_INT, type == KEY_ANY, DB_INT, type, + DB_INT, DB_BLOB); + } + if (!e->inner) + { + free(e); + return NULL; + } + return &e->public; +} + +/** + * enumerator over certificates + */ +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** inner SQL enumerator */ + enumerator_t *inner; + /** currently enumerated cert */ + certificate_t *current; +} cert_enumerator_t; + +/** + * Implementation of cert_enumerator_t.public.enumerate + */ +static bool cert_enumerator_enumerate(cert_enumerator_t *this, + certificate_t **cert) +{ + chunk_t blob; + int type; + + DESTROY_IF(this->current); + while (this->inner->enumerate(this->inner, &type, &blob)) + { + this->current = lib->creds->create(lib->creds, CRED_CERTIFICATE, type, + BUILD_BLOB_ASN1_DER, blob, + BUILD_END); + if (this->current) + { + *cert = this->current; + return TRUE; + } + } + this->current = NULL; + return FALSE; +} + +/** + * Implementation of cert_enumerator_t.public.destroy + */ +static void cert_enumerator_destroy(cert_enumerator_t *this) +{ + DESTROY_IF(this->current); + this->inner->destroy(this->inner); + free(this); +} + +/** + * Implementation of credential_set_t.create_cert_enumerator. + */ +static enumerator_t* create_cert_enumerator(private_sql_cred_t *this, + certificate_type_t cert, key_type_t key, + identification_t *id, bool trusted) +{ + cert_enumerator_t *e; + + e = malloc_thing(cert_enumerator_t); + e->current = NULL; + e->public.enumerate = (void*)cert_enumerator_enumerate; + e->public.destroy = (void*)cert_enumerator_destroy; + if (id && id->get_type(id) != ID_ANY) + { + e->inner = this->db->query(this->db, + "SELECT c.type, c.data FROM certificates AS c " + "JOIN certificate_identity AS ci ON c.id = ci.certificate " + "JOIN identities AS i ON ci.identity = i.id " + "WHERE i.type = ? AND i.data = ? AND " + "(? OR c.type = ?) AND (? OR c.keytype = ?)", + DB_INT, id->get_type(id), DB_BLOB, id->get_encoding(id), + DB_INT, cert == CERT_ANY, DB_INT, cert, + DB_INT, key == KEY_ANY, DB_INT, key, + DB_INT, DB_BLOB); + } + else + { + e->inner = this->db->query(this->db, + "SELECT type, data FROM certificates WHERE " + "(? OR type = ?) AND (? OR keytype = ?)", + DB_INT, cert == CERT_ANY, DB_INT, cert, + DB_INT, key == KEY_ANY, DB_INT, key, + DB_INT, DB_BLOB); + } + if (!e->inner) + { + free(e); + return NULL; + } + return &e->public; +} + +/** + * enumerator over shared keys + */ +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** inner SQL enumerator */ + enumerator_t *inner; + /** own identity */ + identification_t *me; + /** remote identity */ + identification_t *other; + /** currently enumerated private key */ + shared_key_t *current; +} shared_enumerator_t; + +/** + * Implementation of shared_enumerator_t.public.enumerate + */ +static bool shared_enumerator_enumerate(shared_enumerator_t *this, + shared_key_t **shared, + id_match_t *me, id_match_t *other) +{ + chunk_t blob; + int type; + + DESTROY_IF(this->current); + while (this->inner->enumerate(this->inner, &type, &blob)) + { + this->current = shared_key_create(type, chunk_clone(blob)); + if (this->current) + { + *shared = this->current; + if (me) + { + *me = this->me ? ID_MATCH_PERFECT : ID_MATCH_ANY; + } + if (other) + { + *other = this->other ? ID_MATCH_PERFECT : ID_MATCH_ANY; + } + return TRUE; + } + } + this->current = NULL; + return FALSE; +} + +/** + * Implementation of shared_enumerator_t.public.destroy + */ +static void shared_enumerator_destroy(shared_enumerator_t *this) +{ + DESTROY_IF(this->current); + this->inner->destroy(this->inner); + free(this); +} + +/** + * Implementation of credential_set_t.create_shared_enumerator. + */ +static enumerator_t* create_shared_enumerator(private_sql_cred_t *this, + shared_key_type_t type, + identification_t *me, identification_t *other) +{ + shared_enumerator_t *e; + + e = malloc_thing(shared_enumerator_t); + e->me = me; + e->other = other; + e->current = NULL; + e->public.enumerate = (void*)shared_enumerator_enumerate; + e->public.destroy = (void*)shared_enumerator_destroy; + if (!me && !other) + { + e->inner = this->db->query(this->db, + "SELECT type, data FROM shared_secrets WHERE (? OR type = ?)", + DB_INT, type == SHARED_ANY, DB_INT, type, + DB_INT, DB_BLOB); + } + else if (me && other) + { + e->inner = this->db->query(this->db, + "SELECT s.type, s.data FROM shared_secrets AS s " + "JOIN shared_secret_identity AS sm ON s.id = sm.shared_secret " + "JOIN identities AS m ON sm.identity = m.id " + "JOIN shared_secret_identity AS so ON s.id = so.shared_secret " + "JOIN identities AS o ON so.identity = o.id " + "WHERE m.type = ? AND m.data = ? AND o.type = ? AND o.data = ? " + "AND (? OR s.type = ?)", + DB_INT, me->get_type(me), DB_BLOB, me->get_encoding(me), + DB_INT, other->get_type(other), DB_BLOB, other->get_encoding(other), + DB_INT, type == SHARED_ANY, DB_INT, type, + DB_INT, DB_BLOB); + } + else + { + identification_t *id = me ? me : other; + + e->inner = this->db->query(this->db, + "SELECT s.type, s.data FROM shared_secrets AS s " + "JOIN shared_secret_identity AS si ON s.id = si.shared_secret " + "JOIN identities AS i ON si.identity = i.id " + "WHERE i.type = ? AND i.data = ? AND (? OR s.type = ?)", + DB_INT, id->get_type(id), DB_BLOB, id->get_encoding(id), + DB_INT, type == SHARED_ANY, DB_INT, type, + DB_INT, DB_BLOB); + } + if (!e->inner) + { + free(e); + return NULL; + } + return &e->public; +} + +/** + * Implementation of credential_set_t.cache_cert. + */ +static void cache_cert(private_sql_cred_t *this, certificate_t *cert) +{ + /* TODO: implement CRL caching to database */ +} + +/** + * Implementation of sql_cred_t.destroy. + */ +static void destroy(private_sql_cred_t *this) +{ + free(this); +} +/** + * Described in header. + */ +sql_cred_t *sql_cred_create(database_t *db) +{ + private_sql_cred_t *this = malloc_thing(private_sql_cred_t); + + this->public.set.create_private_enumerator = (void*)create_private_enumerator; + this->public.set.create_cert_enumerator = (void*)create_cert_enumerator; + this->public.set.create_shared_enumerator = (void*)create_shared_enumerator; + this->public.set.create_cdp_enumerator = (void*)return_null; + this->public.set.cache_cert = (void*)cache_cert; + this->public.destroy = (void(*)(sql_cred_t*))destroy; + + this->db = db; + + return &this->public; +} + diff --git a/src/libcharon/plugins/sql/sql_cred.h b/src/libcharon/plugins/sql/sql_cred.h new file mode 100644 index 000000000..7f387398e --- /dev/null +++ b/src/libcharon/plugins/sql/sql_cred.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup sql_cred_i sql_cred + * @{ @ingroup sql + */ + +#ifndef SQL_CRED_H_ +#define SQL_CRED_H_ + +#include <credentials/credential_set.h> +#include <database/database.h> + +typedef struct sql_cred_t sql_cred_t; + +/** + * SQL database credential set. + */ +struct sql_cred_t { + + /** + * Implements credential_set_t interface + */ + credential_set_t set; + + /** + * Destry the backend. + */ + void (*destroy)(sql_cred_t *this); +}; + +/** + * Create a sql_cred backend instance. + * + * @param db underlying database + * @return credential set + */ +sql_cred_t *sql_cred_create(database_t *db); + +#endif /** SQL_CRED_H_ @}*/ diff --git a/src/libcharon/plugins/sql/sql_logger.c b/src/libcharon/plugins/sql/sql_logger.c new file mode 100644 index 000000000..d350c4c3d --- /dev/null +++ b/src/libcharon/plugins/sql/sql_logger.c @@ -0,0 +1,145 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <string.h> + +#include "sql_logger.h" + +#include <daemon.h> + +typedef struct private_sql_logger_t private_sql_logger_t; + +/** + * Private data of an sql_logger_t object + */ +struct private_sql_logger_t { + + /** + * Public part + */ + sql_logger_t public; + + /** + * database connection + */ + database_t *db; + + /** + * logging level + */ + int level; + + /** + * avoid recursive logging + */ + bool recursive; +}; + +/** + * Implementation of bus_listener_t.log. + */ +static bool log_(private_sql_logger_t *this, debug_t group, level_t level, + int thread, ike_sa_t* ike_sa, char *format, va_list args) +{ + if (this->recursive) + { + return TRUE; + } + this->recursive = TRUE; + + if (ike_sa && level <= this->level) + { + char buffer[8192]; + chunk_t local_spi, remote_spi; + host_t *local_host, *remote_host; + identification_t *local_id, *remote_id; + u_int64_t ispi, rspi; + ike_sa_id_t *id; + + id = ike_sa->get_id(ike_sa); + ispi = id->get_initiator_spi(id); + rspi = id->get_responder_spi(id); + if (id->is_initiator(id)) + { + local_spi.ptr = (char*)&ispi; + remote_spi.ptr = (char*)&rspi; + } + else + { + local_spi.ptr = (char*)&rspi; + remote_spi.ptr = (char*)&ispi; + } + local_spi.len = remote_spi.len = sizeof(ispi); + local_id = ike_sa->get_my_id(ike_sa); + remote_id = ike_sa->get_other_id(ike_sa); + local_host = ike_sa->get_my_host(ike_sa); + remote_host = ike_sa->get_other_host(ike_sa); + + vsnprintf(buffer, sizeof(buffer), format, args); + + this->db->execute(this->db, NULL, "REPLACE INTO ike_sas (" + "local_spi, remote_spi, id, initiator, " + "local_id_type, local_id_data, " + "remote_id_type, remote_id_data, " + "host_family, local_host_data, remote_host_data) " + "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)", + DB_BLOB, local_spi, DB_BLOB, remote_spi, + DB_INT, ike_sa->get_unique_id(ike_sa), + DB_INT, id->is_initiator(id), + DB_INT, local_id->get_type(local_id), + DB_BLOB, local_id->get_encoding(local_id), + DB_INT, remote_id->get_type(remote_id), + DB_BLOB, remote_id->get_encoding(remote_id), + DB_INT, local_host->get_family(local_host), + DB_BLOB, local_host->get_address(local_host), + DB_BLOB, remote_host->get_address(remote_host)); + this->db->execute(this->db, NULL, "INSERT INTO logs (" + "local_spi, signal, level, msg) VALUES (?, ?, ?, ?)", + DB_BLOB, local_spi, DB_INT, group, DB_INT, level, + DB_TEXT, buffer); + } + this->recursive = FALSE; + /* always stay registered */ + return TRUE; +} + +/** + * Implementation of sql_logger_t.destroy. + */ +static void destroy(private_sql_logger_t *this) +{ + free(this); +} + +/** + * Described in header. + */ +sql_logger_t *sql_logger_create(database_t *db) +{ + private_sql_logger_t *this = malloc_thing(private_sql_logger_t); + + memset(&this->public.listener, 0, sizeof(listener_t)); + this->public.listener.log = (bool(*)(listener_t*,debug_t,level_t,int,ike_sa_t*,char*,va_list))log_; + this->public.destroy = (void(*)(sql_logger_t*))destroy; + + this->db = db; + this->recursive = FALSE; + + this->level = lib->settings->get_int(lib->settings, + "charon.plugins.sql.loglevel", -1); + + return &this->public; +} + diff --git a/src/libcharon/plugins/sql/sql_logger.h b/src/libcharon/plugins/sql/sql_logger.h new file mode 100644 index 000000000..a933705da --- /dev/null +++ b/src/libcharon/plugins/sql/sql_logger.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup sql_logger_i sql_logger + * @{ @ingroup sql + */ + +#ifndef SQL_LOGGER_H_ +#define SQL_LOGGER_H_ + +#include <bus/bus.h> +#include <database/database.h> + +typedef struct sql_logger_t sql_logger_t; + +/** + * SQL database logger. + */ +struct sql_logger_t { + + /** + * Implements bus_listener_t interface + */ + listener_t listener; + + /** + * Destry the backend. + */ + void (*destroy)(sql_logger_t *this); +}; + +/** + * Create a sql_logger instance. + * + * @param db underlying database + * @return logger instance + */ +sql_logger_t *sql_logger_create(database_t *db); + +#endif /** SQL_LOGGER_H_ @}*/ diff --git a/src/libcharon/plugins/sql/sql_plugin.c b/src/libcharon/plugins/sql/sql_plugin.c new file mode 100644 index 000000000..e2d2d63b3 --- /dev/null +++ b/src/libcharon/plugins/sql/sql_plugin.c @@ -0,0 +1,107 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "sql_plugin.h" + +#include <daemon.h> +#include "sql_config.h" +#include "sql_cred.h" +#include "sql_logger.h" + +typedef struct private_sql_plugin_t private_sql_plugin_t; + +/** + * private data of sql plugin + */ +struct private_sql_plugin_t { + + /** + * implements plugin interface + */ + sql_plugin_t public; + + /** + * database connection instance + */ + database_t *db; + + /** + * configuration backend + */ + sql_config_t *config; + + /** + * credential set + */ + sql_cred_t *cred; + + /** + * bus listener/logger + */ + sql_logger_t *logger; +}; + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(private_sql_plugin_t *this) +{ + charon->backends->remove_backend(charon->backends, &this->config->backend); + charon->credentials->remove_set(charon->credentials, &this->cred->set); + charon->bus->remove_listener(charon->bus, &this->logger->listener); + this->config->destroy(this->config); + this->cred->destroy(this->cred); + this->logger->destroy(this->logger); + this->db->destroy(this->db); + free(this); +} + +/* + * see header file + */ +plugin_t *sql_plugin_create() +{ + char *uri; + private_sql_plugin_t *this; + + uri = lib->settings->get_str(lib->settings, "charon.plugins.sql.database", NULL); + if (!uri) + { + DBG1(DBG_CFG, "sql plugin: database URI not set"); + return NULL; + } + + this = malloc_thing(private_sql_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + this->db = lib->db->create(lib->db, uri); + if (!this->db) + { + DBG1(DBG_CFG, "sql plugin failed to connect to database"); + free(this); + return NULL; + } + this->config = sql_config_create(this->db); + this->cred = sql_cred_create(this->db); + this->logger = sql_logger_create(this->db); + + charon->backends->add_backend(charon->backends, &this->config->backend); + charon->credentials->add_set(charon->credentials, &this->cred->set); + charon->bus->add_listener(charon->bus, &this->logger->listener); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/sql/sql_plugin.h b/src/libcharon/plugins/sql/sql_plugin.h new file mode 100644 index 000000000..c6f9ba905 --- /dev/null +++ b/src/libcharon/plugins/sql/sql_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup sql sql + * @ingroup cplugins + * + * @defgroup sql_plugin sql_plugin + * @{ @ingroup sql + */ + +#ifndef SQL_PLUGIN_H_ +#define SQL_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct sql_plugin_t sql_plugin_t; + +/** + * SQL database configuration plugin + */ +struct sql_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** SQL_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/stroke/Makefile.am b/src/libcharon/plugins/stroke/Makefile.am new file mode 100644 index 000000000..40888a40b --- /dev/null +++ b/src/libcharon/plugins/stroke/Makefile.am @@ -0,0 +1,27 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon -I$(top_srcdir)/src/stroke + +AM_CFLAGS = \ +-rdynamic \ +-DIPSEC_CONFDIR=\"${sysconfdir}\" \ +-DIPSEC_PIDDIR=\"${piddir}\" + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-stroke.la +else +plugin_LTLIBRARIES = libstrongswan-stroke.la +endif + +libstrongswan_stroke_la_SOURCES = \ + stroke_plugin.h stroke_plugin.c \ + stroke_socket.h stroke_socket.c \ + stroke_config.h stroke_config.c \ + stroke_control.h stroke_control.c \ + stroke_cred.h stroke_cred.c \ + stroke_ca.h stroke_ca.c \ + stroke_attribute.h stroke_attribute.c \ + stroke_list.h stroke_list.c \ + stroke_shared_key.h stroke_shared_key.c + +libstrongswan_stroke_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/stroke/Makefile.in b/src/libcharon/plugins/stroke/Makefile.in new file mode 100644 index 000000000..8815ba741 --- /dev/null +++ b/src/libcharon/plugins/stroke/Makefile.in @@ -0,0 +1,608 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = 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be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/stroke/stroke_attribute.c b/src/libcharon/plugins/stroke/stroke_attribute.c new file mode 100644 index 000000000..1e4615e12 --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_attribute.c @@ -0,0 +1,226 @@ +/* + * Copyright (C) 2010 Tobias Brunner + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "stroke_attribute.h" + +#include <daemon.h> +#include <attributes/mem_pool.h> +#include <utils/linked_list.h> +#include <threading/rwlock.h> + +typedef struct private_stroke_attribute_t private_stroke_attribute_t; + +/** + * private data of stroke_attribute + */ +struct private_stroke_attribute_t { + + /** + * public functions + */ + stroke_attribute_t public; + + /** + * list of pools, contains mem_pool_t + */ + linked_list_t *pools; + + /** + * rwlock to lock access to pools + */ + rwlock_t *lock; +}; + +/** + * find a pool by name + */ +static mem_pool_t *find_pool(private_stroke_attribute_t *this, char *name) +{ + enumerator_t *enumerator; + mem_pool_t *current, *found = NULL; + + enumerator = this->pools->create_enumerator(this->pools); + while (enumerator->enumerate(enumerator, ¤t)) + { + if (streq(name, current->get_name(current))) + { + found = current; + break; + } + } + enumerator->destroy(enumerator); + return found; +} + +METHOD(attribute_provider_t, acquire_address, host_t*, + private_stroke_attribute_t *this, char *name, identification_t *id, + host_t *requested) +{ + mem_pool_t *pool; + host_t *addr = NULL; + this->lock->read_lock(this->lock); + pool = find_pool(this, name); + if (pool) + { + addr = pool->acquire_address(pool, id, requested); + } + this->lock->unlock(this->lock); + return addr; +} + +METHOD(attribute_provider_t, release_address, bool, + private_stroke_attribute_t *this, char *name, host_t *address, + identification_t *id) +{ + mem_pool_t *pool; + bool found = FALSE; + this->lock->read_lock(this->lock); + pool = find_pool(this, name); + if (pool) + { + found = pool->release_address(pool, address, id); + } + this->lock->unlock(this->lock); + return found; +} + +METHOD(stroke_attribute_t, add_pool, void, + private_stroke_attribute_t *this, stroke_msg_t *msg) +{ + if (msg->add_conn.other.sourceip_mask) + { + mem_pool_t *pool; + host_t *base = NULL; + u_int32_t bits = 0; + + /* if %config, add an empty pool, otherwise */ + if (msg->add_conn.other.sourceip) + { + DBG1(DBG_CFG, "adding virtual IP address pool '%s': %s/%d", + msg->add_conn.name, msg->add_conn.other.sourceip, + msg->add_conn.other.sourceip_mask); + base = host_create_from_string(msg->add_conn.other.sourceip, 0); + if (!base) + { + DBG1(DBG_CFG, "virtual IP address invalid, discarded"); + return; + } + bits = msg->add_conn.other.sourceip_mask; + } + pool = mem_pool_create(msg->add_conn.name, base, bits); + DESTROY_IF(base); + + this->lock->write_lock(this->lock); + this->pools->insert_last(this->pools, pool); + this->lock->unlock(this->lock); + } +} + +METHOD(stroke_attribute_t, del_pool, void, + private_stroke_attribute_t *this, stroke_msg_t *msg) +{ + enumerator_t *enumerator; + mem_pool_t *pool; + + this->lock->write_lock(this->lock); + enumerator = this->pools->create_enumerator(this->pools); + while (enumerator->enumerate(enumerator, &pool)) + { + if (streq(msg->del_conn.name, pool->get_name(pool))) + { + this->pools->remove_at(this->pools, enumerator); + pool->destroy(pool); + break; + } + } + enumerator->destroy(enumerator); + this->lock->unlock(this->lock); +} + +/** + * Pool enumerator filter function, converts pool_t to name, size, ... + */ +static bool pool_filter(void *lock, mem_pool_t **poolp, const char **name, + void *d1, u_int *size, void *d2, u_int *online, + void *d3, u_int *offline) +{ + mem_pool_t *pool = *poolp; + *name = pool->get_name(pool); + *size = pool->get_size(pool); + *online = pool->get_online(pool); + *offline = pool->get_offline(pool); + return TRUE; +} + +METHOD(stroke_attribute_t, create_pool_enumerator, enumerator_t*, + private_stroke_attribute_t *this) +{ + this->lock->read_lock(this->lock); + return enumerator_create_filter(this->pools->create_enumerator(this->pools), + (void*)pool_filter, + this->lock, (void*)this->lock->unlock); +} + +METHOD(stroke_attribute_t, create_lease_enumerator, enumerator_t*, + private_stroke_attribute_t *this, char *name) +{ + mem_pool_t *pool; + this->lock->read_lock(this->lock); + pool = find_pool(this, name); + if (!pool) + { + this->lock->unlock(this->lock); + return NULL; + } + return enumerator_create_cleaner(pool->create_lease_enumerator(pool), + (void*)this->lock->unlock, this->lock); +} + +METHOD(stroke_attribute_t, destroy, void, + private_stroke_attribute_t *this) +{ + this->lock->destroy(this->lock); + this->pools->destroy_offset(this->pools, offsetof(mem_pool_t, destroy)); + free(this); +} + +/* + * see header file + */ +stroke_attribute_t *stroke_attribute_create() +{ + private_stroke_attribute_t *this; + + INIT(this, + .public = { + .provider = { + .acquire_address = _acquire_address, + .release_address = _release_address, + .create_attribute_enumerator = enumerator_create_empty, + }, + .add_pool = _add_pool, + .del_pool = _del_pool, + .create_pool_enumerator = _create_pool_enumerator, + .create_lease_enumerator = _create_lease_enumerator, + .destroy = _destroy, + }, + .pools = linked_list_create(), + .lock = rwlock_create(RWLOCK_TYPE_DEFAULT), + ); + + return &this->public; +} + diff --git a/src/libcharon/plugins/stroke/stroke_attribute.h b/src/libcharon/plugins/stroke/stroke_attribute.h new file mode 100644 index 000000000..249a9899b --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_attribute.h @@ -0,0 +1,86 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup stroke_attribute stroke_attribute + * @{ @ingroup stroke + */ + +#ifndef STROKE_ATTRIBUTE_H_ +#define STROKE_ATTRIBUTE_H_ + +#include <stroke_msg.h> +#include <attributes/attribute_provider.h> + +typedef struct stroke_attribute_t stroke_attribute_t; + +/** + * Stroke IKEv2 cfg attribute provider + */ +struct stroke_attribute_t { + + /** + * Implements attribute provider interface + */ + attribute_provider_t provider; + + /** + * Add a virtual IP address pool. + * + * @param msg stroke message + */ + void (*add_pool)(stroke_attribute_t *this, stroke_msg_t *msg); + + /** + * Remove a virtual IP address pool. + * + * @param msg stroke message + */ + void (*del_pool)(stroke_attribute_t *this, stroke_msg_t *msg); + + /** + * Create an enumerator over installed pools. + * + * Enumerator enumerates over + * char *pool, u_int size, u_int offline, u_int online. + * + * @return enumerator + */ + enumerator_t* (*create_pool_enumerator)(stroke_attribute_t *this); + + /** + * Create an enumerator over the leases of a pool. + * + * Enumerator enumerates over + * identification_t *id, host_t *address, bool online + * + * @param pool name of the pool to enumerate + * @return enumerator, NULL if pool not found + */ + enumerator_t* (*create_lease_enumerator)(stroke_attribute_t *this, + char *pool); + + /** + * Destroy a stroke_attribute instance. + */ + void (*destroy)(stroke_attribute_t *this); +}; + +/** + * Create a stroke_attribute instance. + */ +stroke_attribute_t *stroke_attribute_create(); + +#endif /** STROKE_ATTRIBUTE_H_ @}*/ diff --git a/src/libcharon/plugins/stroke/stroke_ca.c b/src/libcharon/plugins/stroke/stroke_ca.c new file mode 100644 index 000000000..49146f18b --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_ca.c @@ -0,0 +1,458 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "stroke_ca.h" +#include "stroke_cred.h" + +#include <threading/rwlock.h> +#include <utils/linked_list.h> +#include <crypto/hashers/hasher.h> + +#include <daemon.h> + +typedef struct private_stroke_ca_t private_stroke_ca_t; + +/** + * private data of stroke_ca + */ +struct private_stroke_ca_t { + + /** + * public functions + */ + stroke_ca_t public; + + /** + * read-write lock to lists + */ + rwlock_t *lock; + + /** + * list of starters CA sections and its certificates (ca_section_t) + */ + linked_list_t *sections; + + /** + * stroke credentials, stores our CA certificates + */ + stroke_cred_t *cred; +}; + +typedef struct ca_section_t ca_section_t; + +/** + * loaded ipsec.conf CA sections + */ +struct ca_section_t { + + /** + * name of the CA section + */ + char *name; + + /** + * reference to cert in trusted_credential_t + */ + certificate_t *cert; + + /** + * CRL URIs + */ + linked_list_t *crl; + + /** + * OCSP URIs + */ + linked_list_t *ocsp; + + /** + * Hashes of certificates issued by this CA + */ + linked_list_t *hashes; + + /** + * Base URI used for certificates from this CA + */ + char *certuribase; +}; + +/** + * create a new CA section + */ +static ca_section_t *ca_section_create(char *name, certificate_t *cert) +{ + ca_section_t *ca = malloc_thing(ca_section_t); + + ca->name = strdup(name); + ca->crl = linked_list_create(); + ca->ocsp = linked_list_create(); + ca->cert = cert; + ca->hashes = linked_list_create(); + ca->certuribase = NULL; + return ca; +} + +/** + * destroy a ca section entry + */ +static void ca_section_destroy(ca_section_t *this) +{ + this->crl->destroy_function(this->crl, free); + this->ocsp->destroy_function(this->ocsp, free); + this->hashes->destroy_offset(this->hashes, offsetof(identification_t, destroy)); + free(this->certuribase); + free(this->name); + free(this); +} + +/** + * data to pass to create_inner_cdp + */ +typedef struct { + private_stroke_ca_t *this; + certificate_type_t type; + identification_t *id; +} cdp_data_t; + +/** + * destroy cdp enumerator data and unlock list + */ +static void cdp_data_destroy(cdp_data_t *data) +{ + data->this->lock->unlock(data->this->lock); + free(data); +} + +/** + * inner enumerator constructor for CDP URIs + */ +static enumerator_t *create_inner_cdp(ca_section_t *section, cdp_data_t *data) +{ + public_key_t *public; + enumerator_t *enumerator = NULL; + linked_list_t *list; + + if (data->type == CERT_X509_OCSP_RESPONSE) + { + list = section->ocsp; + } + else + { + list = section->crl; + } + + public = section->cert->get_public_key(section->cert); + if (public) + { + if (!data->id) + { + enumerator = list->create_enumerator(list); + } + else + { + if (public->has_fingerprint(public, data->id->get_encoding(data->id))) + { + enumerator = list->create_enumerator(list); + } + } + public->destroy(public); + } + return enumerator; +} + +/** + * inner enumerator constructor for "Hash and URL" + */ +static enumerator_t *create_inner_cdp_hashandurl(ca_section_t *section, cdp_data_t *data) +{ + enumerator_t *enumerator = NULL, *hash_enum; + identification_t *current; + + if (!data->id || !section->certuribase) + { + return NULL; + } + + hash_enum = section->hashes->create_enumerator(section->hashes); + while (hash_enum->enumerate(hash_enum, ¤t)) + { + if (current->matches(current, data->id)) + { + char *url, *hash; + + url = malloc(strlen(section->certuribase) + 40 + 1); + strcpy(url, section->certuribase); + hash = chunk_to_hex(current->get_encoding(current), NULL, FALSE).ptr; + strncat(url, hash, 40); + free(hash); + + enumerator = enumerator_create_single(url, free); + break; + } + } + hash_enum->destroy(hash_enum); + return enumerator; +} + +/** + * Implementation of credential_set_t.create_cdp_enumerator. + */ +static enumerator_t *create_cdp_enumerator(private_stroke_ca_t *this, + certificate_type_t type, identification_t *id) +{ + cdp_data_t *data; + + switch (type) + { /* we serve CRLs, OCSP responders and URLs for "Hash and URL" */ + case CERT_X509: + case CERT_X509_CRL: + case CERT_X509_OCSP_RESPONSE: + case CERT_ANY: + break; + default: + return NULL; + } + data = malloc_thing(cdp_data_t); + data->this = this; + data->type = type; + data->id = id; + + this->lock->read_lock(this->lock); + return enumerator_create_nested(this->sections->create_enumerator(this->sections), + (type == CERT_X509) ? (void*)create_inner_cdp_hashandurl : (void*)create_inner_cdp, + data, (void*)cdp_data_destroy); +} +/** + * Implementation of stroke_ca_t.add. + */ +static void add(private_stroke_ca_t *this, stroke_msg_t *msg) +{ + certificate_t *cert; + ca_section_t *ca; + + if (msg->add_ca.cacert == NULL) + { + DBG1(DBG_CFG, "missing cacert parameter"); + return; + } + cert = this->cred->load_ca(this->cred, msg->add_ca.cacert); + if (cert) + { + ca = ca_section_create(msg->add_ca.name, cert); + if (msg->add_ca.crluri) + { + ca->crl->insert_last(ca->crl, strdup(msg->add_ca.crluri)); + } + if (msg->add_ca.crluri2) + { + ca->crl->insert_last(ca->crl, strdup(msg->add_ca.crluri2)); + } + if (msg->add_ca.ocspuri) + { + ca->ocsp->insert_last(ca->ocsp, strdup(msg->add_ca.ocspuri)); + } + if (msg->add_ca.ocspuri2) + { + ca->ocsp->insert_last(ca->ocsp, strdup(msg->add_ca.ocspuri2)); + } + if (msg->add_ca.certuribase) + { + ca->certuribase = strdup(msg->add_ca.certuribase); + } + this->lock->write_lock(this->lock); + this->sections->insert_last(this->sections, ca); + this->lock->unlock(this->lock); + DBG1(DBG_CFG, "added ca '%s'", msg->add_ca.name); + } +} + +/** + * Implementation of stroke_ca_t.del. + */ +static void del(private_stroke_ca_t *this, stroke_msg_t *msg) +{ + enumerator_t *enumerator; + ca_section_t *ca = NULL; + + this->lock->write_lock(this->lock); + enumerator = this->sections->create_enumerator(this->sections); + while (enumerator->enumerate(enumerator, &ca)) + { + if (streq(ca->name, msg->del_ca.name)) + { + this->sections->remove_at(this->sections, enumerator); + break; + } + ca = NULL; + } + enumerator->destroy(enumerator); + this->lock->unlock(this->lock); + if (ca == NULL) + { + DBG1(DBG_CFG, "no ca named '%s' found\n", msg->del_ca.name); + return; + } + ca_section_destroy(ca); + /* TODO: flush cached certs */ +} + +/** + * list crl or ocsp URIs + */ +static void list_uris(linked_list_t *list, char *label, FILE *out) +{ + bool first = TRUE; + char *uri; + enumerator_t *enumerator; + + enumerator = list->create_enumerator(list); + while (enumerator->enumerate(enumerator, (void**)&uri)) + { + if (first) + { + fprintf(out, label); + first = FALSE; + } + else + { + fprintf(out, " "); + } + fprintf(out, "'%s'\n", uri); + } + enumerator->destroy(enumerator); +} + +/** + * Implementation of stroke_ca_t.check_for_hash_and_url. + */ +static void check_for_hash_and_url(private_stroke_ca_t *this, certificate_t* cert) +{ + ca_section_t *section; + enumerator_t *enumerator; + + hasher_t *hasher = lib->crypto->create_hasher(lib->crypto, HASH_SHA1); + if (hasher == NULL) + { + DBG1(DBG_IKE, "unable to use hash-and-url: sha1 not supported"); + return; + } + + this->lock->write_lock(this->lock); + enumerator = this->sections->create_enumerator(this->sections); + while (enumerator->enumerate(enumerator, (void**)§ion)) + { + if (section->certuribase && cert->issued_by(cert, section->cert)) + { + chunk_t hash, encoded = cert->get_encoding(cert); + hasher->allocate_hash(hasher, encoded, &hash); + section->hashes->insert_last(section->hashes, + identification_create_from_encoding(ID_KEY_ID, hash)); + chunk_free(&hash); + chunk_free(&encoded); + break; + } + } + enumerator->destroy(enumerator); + this->lock->unlock(this->lock); + + hasher->destroy(hasher); +} + +/** + * Implementation of stroke_ca_t.list. + */ +static void list(private_stroke_ca_t *this, stroke_msg_t *msg, FILE *out) +{ + bool first = TRUE; + ca_section_t *section; + enumerator_t *enumerator; + + this->lock->read_lock(this->lock); + enumerator = this->sections->create_enumerator(this->sections); + while (enumerator->enumerate(enumerator, (void**)§ion)) + { + certificate_t *cert = section->cert; + public_key_t *public = cert->get_public_key(cert); + chunk_t chunk; + + if (first) + { + fprintf(out, "\n"); + fprintf(out, "List of CA Information Sections:\n"); + first = FALSE; + } + fprintf(out, "\n"); + fprintf(out, " authname: \"%Y\"\n", cert->get_subject(cert)); + + /* list authkey and keyid */ + if (public) + { + if (public->get_fingerprint(public, KEY_ID_PUBKEY_SHA1, &chunk)) + { + fprintf(out, " authkey: %#B\n", &chunk); + } + if (public->get_fingerprint(public, KEY_ID_PUBKEY_INFO_SHA1, &chunk)) + { + fprintf(out, " keyid: %#B\n", &chunk); + } + public->destroy(public); + } + list_uris(section->crl, " crluris: ", out); + list_uris(section->ocsp, " ocspuris: ", out); + if (section->certuribase) + { + fprintf(out, " certuribase: '%s'\n", section->certuribase); + } + } + enumerator->destroy(enumerator); + this->lock->unlock(this->lock); +} + +/** + * Implementation of stroke_ca_t.destroy + */ +static void destroy(private_stroke_ca_t *this) +{ + this->sections->destroy_function(this->sections, (void*)ca_section_destroy); + this->lock->destroy(this->lock); + free(this); +} + +/* + * see header file + */ +stroke_ca_t *stroke_ca_create(stroke_cred_t *cred) +{ + private_stroke_ca_t *this = malloc_thing(private_stroke_ca_t); + + this->public.set.create_private_enumerator = (void*)return_null; + this->public.set.create_cert_enumerator = (void*)return_null; + this->public.set.create_shared_enumerator = (void*)return_null; + this->public.set.create_cdp_enumerator = (void*)create_cdp_enumerator; + this->public.set.cache_cert = (void*)nop; + this->public.add = (void(*)(stroke_ca_t*, stroke_msg_t *msg))add; + this->public.del = (void(*)(stroke_ca_t*, stroke_msg_t *msg))del; + this->public.list = (void(*)(stroke_ca_t*, stroke_msg_t *msg, FILE *out))list; + this->public.check_for_hash_and_url = (void(*)(stroke_ca_t*, certificate_t*))check_for_hash_and_url; + this->public.destroy = (void(*)(stroke_ca_t*))destroy; + + this->sections = linked_list_create(); + this->lock = rwlock_create(RWLOCK_TYPE_DEFAULT); + this->cred = cred; + + return &this->public; +} + diff --git a/src/libcharon/plugins/stroke/stroke_ca.h b/src/libcharon/plugins/stroke/stroke_ca.h new file mode 100644 index 000000000..21af912ea --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_ca.h @@ -0,0 +1,80 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup stroke_ca stroke_ca + * @{ @ingroup stroke + */ + +#ifndef STROKE_CA_H_ +#define STROKE_CA_H_ + +#include <stroke_msg.h> + +#include "stroke_cred.h" + +typedef struct stroke_ca_t stroke_ca_t; + +/** + * ipsec.conf ca section handling. + */ +struct stroke_ca_t { + + /** + * Implements credential_set_t + */ + credential_set_t set; + + /** + * Add a CA to the set using a stroke_msg_t. + * + * @param msg stroke message containing CA info + */ + void (*add)(stroke_ca_t *this, stroke_msg_t *msg); + + /** + * Remove a CA from the set using a stroke_msg_t. + * + * @param msg stroke message containing CA info + */ + void (*del)(stroke_ca_t *this, stroke_msg_t *msg); + + /** + * List CA sections to stroke console. + * + * @param msg stroke message + */ + void (*list)(stroke_ca_t *this, stroke_msg_t *msg, FILE *out); + + /** + * Check if a certificate can be made available through hash and URL. + * + * @param cert peer certificate + */ + void (*check_for_hash_and_url)(stroke_ca_t *this, certificate_t* cert); + + /** + * Destroy a stroke_ca instance. + */ + void (*destroy)(stroke_ca_t *this); +}; + +/** + * Create a stroke_ca instance. + */ +stroke_ca_t *stroke_ca_create(stroke_cred_t *cred); + +#endif /** STROKE_CA_H_ @}*/ diff --git a/src/libcharon/plugins/stroke/stroke_config.c b/src/libcharon/plugins/stroke/stroke_config.c new file mode 100644 index 000000000..bbc1e7a31 --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_config.c @@ -0,0 +1,949 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "stroke_config.h" + +#include <daemon.h> +#include <threading/mutex.h> +#include <utils/lexparser.h> + +typedef struct private_stroke_config_t private_stroke_config_t; + +/** + * private data of stroke_config + */ +struct private_stroke_config_t { + + /** + * public functions + */ + stroke_config_t public; + + /** + * list of peer_cfg_t + */ + linked_list_t *list; + + /** + * mutex to lock config list + */ + mutex_t *mutex; + + /** + * ca sections + */ + stroke_ca_t *ca; + + /** + * credentials + */ + stroke_cred_t *cred; +}; + +/** + * Implementation of backend_t.create_peer_cfg_enumerator. + */ +static enumerator_t* create_peer_cfg_enumerator(private_stroke_config_t *this, + identification_t *me, + identification_t *other) +{ + this->mutex->lock(this->mutex); + return enumerator_create_cleaner(this->list->create_enumerator(this->list), + (void*)this->mutex->unlock, this->mutex); +} + +/** + * filter function for ike configs + */ +static bool ike_filter(void *data, peer_cfg_t **in, ike_cfg_t **out) +{ + *out = (*in)->get_ike_cfg(*in); + return TRUE; +} + +/** + * Implementation of backend_t.create_ike_cfg_enumerator. + */ +static enumerator_t* create_ike_cfg_enumerator(private_stroke_config_t *this, + host_t *me, host_t *other) +{ + this->mutex->lock(this->mutex); + return enumerator_create_filter(this->list->create_enumerator(this->list), + (void*)ike_filter, this->mutex, + (void*)this->mutex->unlock); +} + +/** + * implements backend_t.get_peer_cfg_by_name. + */ +static peer_cfg_t *get_peer_cfg_by_name(private_stroke_config_t *this, char *name) +{ + enumerator_t *e1, *e2; + peer_cfg_t *current, *found = NULL; + child_cfg_t *child; + + this->mutex->lock(this->mutex); + e1 = this->list->create_enumerator(this->list); + while (e1->enumerate(e1, ¤t)) + { + /* compare peer_cfgs name first */ + if (streq(current->get_name(current), name)) + { + found = current; + found->get_ref(found); + break; + } + /* compare all child_cfg names otherwise */ + e2 = current->create_child_cfg_enumerator(current); + while (e2->enumerate(e2, &child)) + { + if (streq(child->get_name(child), name)) + { + found = current; + found->get_ref(found); + break; + } + } + e2->destroy(e2); + if (found) + { + break; + } + } + e1->destroy(e1); + this->mutex->unlock(this->mutex); + return found; +} + +/** + * parse a proposal string, either into ike_cfg or child_cfg + */ +static void add_proposals(private_stroke_config_t *this, char *string, + ike_cfg_t *ike_cfg, child_cfg_t *child_cfg) +{ + if (string) + { + char *single; + char *strict; + proposal_t *proposal; + protocol_id_t proto = PROTO_ESP; + + if (ike_cfg) + { + proto = PROTO_IKE; + } + strict = string + strlen(string) - 1; + if (*strict == '!') + { + *strict = '\0'; + } + else + { + strict = NULL; + } + while ((single = strsep(&string, ","))) + { + proposal = proposal_create_from_string(proto, single); + if (proposal) + { + if (ike_cfg) + { + ike_cfg->add_proposal(ike_cfg, proposal); + } + else + { + child_cfg->add_proposal(child_cfg, proposal); + } + continue; + } + DBG1(DBG_CFG, "skipped invalid proposal string: %s", single); + } + if (strict) + { + return; + } + /* add default porposal to the end if not strict */ + } + if (ike_cfg) + { + ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE)); + } + else + { + child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP)); + } +} + +/** + * Build an IKE config from a stroke message + */ +static ike_cfg_t *build_ike_cfg(private_stroke_config_t *this, stroke_msg_t *msg) +{ + stroke_end_t tmp_end; + ike_cfg_t *ike_cfg; + char *interface; + host_t *host; + + host = host_create_from_dns(msg->add_conn.other.address, 0, 0); + if (host) + { + interface = charon->kernel_interface->get_interface( + charon->kernel_interface, host); + host->destroy(host); + if (interface) + { + DBG2(DBG_CFG, "left is other host, swapping ends"); + tmp_end = msg->add_conn.me; + msg->add_conn.me = msg->add_conn.other; + msg->add_conn.other = tmp_end; + free(interface); + } + else + { + host = host_create_from_dns(msg->add_conn.me.address, 0, 0); + if (host) + { + interface = charon->kernel_interface->get_interface( + charon->kernel_interface, host); + host->destroy(host); + if (!interface) + { + DBG1(DBG_CFG, "left nor right host is our side, " + "assuming left=local"); + } + else + { + free(interface); + } + + } + } + } + ike_cfg = ike_cfg_create(msg->add_conn.other.sendcert != CERT_NEVER_SEND, + msg->add_conn.force_encap, + msg->add_conn.me.address, msg->add_conn.me.ikeport, + msg->add_conn.other.address, msg->add_conn.other.ikeport); + add_proposals(this, msg->add_conn.algorithms.ike, ike_cfg, NULL); + return ike_cfg; +} + +/** + * Add CRL constraint to config + */ +static void build_crl_policy(auth_cfg_t *cfg, bool local, int policy) +{ + /* CRL/OCSP policy, for remote config only */ + if (!local) + { + switch (policy) + { + case CRL_STRICT_YES: + /* if yes, we require a GOOD validation */ + cfg->add(cfg, AUTH_RULE_CRL_VALIDATION, VALIDATION_GOOD); + break; + case CRL_STRICT_IFURI: + /* for ifuri, a SKIPPED validation is sufficient */ + cfg->add(cfg, AUTH_RULE_CRL_VALIDATION, VALIDATION_SKIPPED); + break; + default: + break; + } + } +} + +/** + * build authentication config + */ +static auth_cfg_t *build_auth_cfg(private_stroke_config_t *this, + stroke_msg_t *msg, bool local, bool primary) +{ + identification_t *identity; + certificate_t *certificate; + char *auth, *id, *cert, *ca; + stroke_end_t *end, *other_end; + auth_cfg_t *cfg; + char eap_buf[32]; + + /* select strings */ + if (local) + { + end = &msg->add_conn.me; + other_end = &msg->add_conn.other; + } + else + { + end = &msg->add_conn.other; + other_end = &msg->add_conn.me; + } + if (primary) + { + auth = end->auth; + id = end->id; + if (!id) + { /* leftid/rightid fallback to address */ + id = end->address; + } + cert = end->cert; + ca = end->ca; + if (ca && streq(ca, "%same")) + { + ca = other_end->ca; + } + } + else + { + auth = end->auth2; + id = end->id2; + if (local && !id) + { /* leftid2 falls back to leftid */ + id = end->id; + } + cert = end->cert2; + ca = end->ca2; + if (ca && streq(ca, "%same")) + { + ca = other_end->ca2; + } + } + + if (!auth) + { + if (primary) + { + if (local) + { /* "leftauth" not defined, fall back to deprecated "authby" */ + switch (msg->add_conn.auth_method) + { + default: + case AUTH_CLASS_PUBKEY: + auth = "pubkey"; + break; + case AUTH_CLASS_PSK: + auth = "psk"; + break; + case AUTH_CLASS_EAP: + auth = "eap"; + break; + } + } + else + { /* "rightauth" not defined, fall back to deprecated "eap" */ + if (msg->add_conn.eap_type) + { + if (msg->add_conn.eap_vendor) + { + snprintf(eap_buf, sizeof(eap_buf), "eap-%d-%d", + msg->add_conn.eap_type, + msg->add_conn.eap_vendor); + } + else + { + snprintf(eap_buf, sizeof(eap_buf), "eap-%d", + msg->add_conn.eap_type); + } + auth = eap_buf; + } + else + { /* not EAP => no constraints for this peer */ + auth = "any"; + } + } + } + else + { /* no second authentication round, fine */ + return NULL; + } + } + + cfg = auth_cfg_create(); + + /* add identity and peer certifcate */ + identity = identification_create_from_string(id); + if (cert) + { + certificate = this->cred->load_peer(this->cred, cert); + if (certificate) + { + if (local) + { + this->ca->check_for_hash_and_url(this->ca, certificate); + } + cfg->add(cfg, AUTH_RULE_SUBJECT_CERT, certificate); + if (identity->get_type(identity) == ID_ANY || + !certificate->has_subject(certificate, identity)) + { + DBG1(DBG_CFG, " id '%Y' not confirmed by certificate, " + "defaulting to '%Y'", identity, + certificate->get_subject(certificate)); + identity->destroy(identity); + identity = certificate->get_subject(certificate); + identity = identity->clone(identity); + } + } + } + cfg->add(cfg, AUTH_RULE_IDENTITY, identity); + + /* CA constraint */ + if (ca) + { + identity = identification_create_from_string(ca); + certificate = charon->credentials->get_cert(charon->credentials, + CERT_X509, KEY_ANY, identity, TRUE); + identity->destroy(identity); + if (certificate) + { + cfg->add(cfg, AUTH_RULE_CA_CERT, certificate); + } + else + { + DBG1(DBG_CFG, "CA certificate %s not found, discarding CA " + "constraint", ca); + } + } + + /* AC groups */ + if (end->groups) + { + enumerator_t *enumerator; + char *group; + + enumerator = enumerator_create_token(end->groups, ",", " "); + while (enumerator->enumerate(enumerator, &group)) + { + identity = identification_create_from_encoding(ID_IETF_ATTR_STRING, + chunk_create(group, strlen(group))); + cfg->add(cfg, AUTH_RULE_AC_GROUP, identity); + } + enumerator->destroy(enumerator); + } + + /* authentication metod (class, actually) */ + if (streq(auth, "pubkey") || + streq(auth, "rsasig") || streq(auth, "rsa") || + streq(auth, "ecdsasig") || streq(auth, "ecdsa")) + { + cfg->add(cfg, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY); + build_crl_policy(cfg, local, msg->add_conn.crl_policy); + } + else if (streq(auth, "psk") || streq(auth, "secret")) + { + cfg->add(cfg, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PSK); + } + else if (strneq(auth, "eap", 3)) + { + enumerator_t *enumerator; + char *str; + int i = 0, type = 0, vendor; + + cfg->add(cfg, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_EAP); + + /* parse EAP string, format: eap[-type[-vendor]] */ + enumerator = enumerator_create_token(auth, "-", " "); + while (enumerator->enumerate(enumerator, &str)) + { + switch (i) + { + case 1: + type = eap_type_from_string(str); + if (!type) + { + type = atoi(str); + if (!type) + { + DBG1(DBG_CFG, "unknown EAP method: %s", str); + break; + } + } + cfg->add(cfg, AUTH_RULE_EAP_TYPE, type); + break; + case 2: + if (type) + { + vendor = atoi(str); + if (vendor) + { + cfg->add(cfg, AUTH_RULE_EAP_VENDOR, vendor); + } + else + { + DBG1(DBG_CFG, "unknown EAP vendor: %s", str); + } + } + break; + default: + break; + } + i++; + } + enumerator->destroy(enumerator); + + if (msg->add_conn.eap_identity) + { + if (streq(msg->add_conn.eap_identity, "%identity")) + { + identity = identification_create_from_encoding(ID_ANY, + chunk_empty); + } + else + { + identity = identification_create_from_string( + msg->add_conn.eap_identity); + } + cfg->add(cfg, AUTH_RULE_EAP_IDENTITY, identity); + } + } + else + { + if (!streq(auth, "any")) + { + DBG1(DBG_CFG, "authentication method %s unknown, fallback to any", + auth); + } + build_crl_policy(cfg, local, msg->add_conn.crl_policy); + } + return cfg; +} + +/** + * build a peer_cfg from a stroke msg + */ +static peer_cfg_t *build_peer_cfg(private_stroke_config_t *this, + stroke_msg_t *msg, ike_cfg_t *ike_cfg) +{ + identification_t *peer_id = NULL; + peer_cfg_t *mediated_by = NULL; + host_t *vip = NULL; + unique_policy_t unique; + u_int32_t rekey = 0, reauth = 0, over, jitter; + peer_cfg_t *peer_cfg; + auth_cfg_t *auth_cfg; + +#ifdef ME + if (msg->add_conn.ikeme.mediation && msg->add_conn.ikeme.mediated_by) + { + DBG1(DBG_CFG, "a mediation connection cannot be a mediated connection " + "at the same time, aborting"); + return NULL; + } + + if (msg->add_conn.ikeme.mediation) + { + /* force unique connections for mediation connections */ + msg->add_conn.unique = 1; + } + + if (msg->add_conn.ikeme.mediated_by) + { + mediated_by = charon->backends->get_peer_cfg_by_name(charon->backends, + msg->add_conn.ikeme.mediated_by); + if (!mediated_by) + { + DBG1(DBG_CFG, "mediation connection '%s' not found, aborting", + msg->add_conn.ikeme.mediated_by); + return NULL; + } + if (!mediated_by->is_mediation(mediated_by)) + { + DBG1(DBG_CFG, "connection '%s' as referred to by '%s' is " + "no mediation connection, aborting", + msg->add_conn.ikeme.mediated_by, msg->add_conn.name); + mediated_by->destroy(mediated_by); + return NULL; + } + if (msg->add_conn.ikeme.peerid) + { + peer_id = identification_create_from_string(msg->add_conn.ikeme.peerid); + } + else if (msg->add_conn.other.id) + { + peer_id = identification_create_from_string(msg->add_conn.other.id); + } + } +#endif /* ME */ + + jitter = msg->add_conn.rekey.margin * msg->add_conn.rekey.fuzz / 100; + over = msg->add_conn.rekey.margin; + if (msg->add_conn.rekey.reauth) + { + reauth = msg->add_conn.rekey.ike_lifetime - over; + } + else + { + rekey = msg->add_conn.rekey.ike_lifetime - over; + } + if (msg->add_conn.me.sourceip_mask) + { + if (msg->add_conn.me.sourceip) + { + vip = host_create_from_string(msg->add_conn.me.sourceip, 0); + } + if (!vip) + { /* if it is set to something like %poolname, request an address */ + if (msg->add_conn.me.subnets) + { /* use the same address as in subnet, if any */ + if (strchr(msg->add_conn.me.subnets, '.')) + { + vip = host_create_any(AF_INET); + } + else + { + vip = host_create_any(AF_INET6); + } + } + else + { + if (strchr(ike_cfg->get_my_addr(ike_cfg), ':')) + { + vip = host_create_any(AF_INET6); + } + else + { + vip = host_create_any(AF_INET); + } + } + } + } + switch (msg->add_conn.unique) + { + case 1: /* yes */ + case 2: /* replace */ + unique = UNIQUE_REPLACE; + break; + case 3: /* keep */ + unique = UNIQUE_KEEP; + break; + default: /* no */ + unique = UNIQUE_NO; + break; + } + if (msg->add_conn.dpd.action == 0) + { /* dpdaction=none disables DPD */ + msg->add_conn.dpd.delay = 0; + } + + /* other.sourceip is managed in stroke_attributes. If it is set, we define + * the pool name as the connection name, which the attribute provider + * uses to serve pool addresses. */ + peer_cfg = peer_cfg_create(msg->add_conn.name, + msg->add_conn.ikev2 ? 2 : 1, ike_cfg, + msg->add_conn.me.sendcert, unique, + msg->add_conn.rekey.tries, rekey, reauth, jitter, over, + msg->add_conn.mobike, msg->add_conn.dpd.delay, + vip, msg->add_conn.other.sourceip_mask ? + msg->add_conn.name : msg->add_conn.other.sourceip, + msg->add_conn.ikeme.mediation, mediated_by, peer_id); + + /* build leftauth= */ + auth_cfg = build_auth_cfg(this, msg, TRUE, TRUE); + if (auth_cfg) + { + peer_cfg->add_auth_cfg(peer_cfg, auth_cfg, TRUE); + } + else + { /* we require at least one config on our side */ + peer_cfg->destroy(peer_cfg); + return NULL; + } + /* build leftauth2= */ + auth_cfg = build_auth_cfg(this, msg, TRUE, FALSE); + if (auth_cfg) + { + peer_cfg->add_auth_cfg(peer_cfg, auth_cfg, TRUE); + } + /* build rightauth= */ + auth_cfg = build_auth_cfg(this, msg, FALSE, TRUE); + if (auth_cfg) + { + peer_cfg->add_auth_cfg(peer_cfg, auth_cfg, FALSE); + } + /* build rightauth2= */ + auth_cfg = build_auth_cfg(this, msg, FALSE, FALSE); + if (auth_cfg) + { + peer_cfg->add_auth_cfg(peer_cfg, auth_cfg, FALSE); + } + return peer_cfg; +} + +/** + * build a traffic selector from a stroke_end + */ +static void add_ts(private_stroke_config_t *this, + stroke_end_t *end, child_cfg_t *child_cfg, bool local) +{ + traffic_selector_t *ts; + + if (end->tohost) + { + ts = traffic_selector_create_dynamic(end->protocol, + end->port ? end->port : 0, end->port ? end->port : 65535); + child_cfg->add_traffic_selector(child_cfg, local, ts); + } + else + { + host_t *net; + + if (!end->subnets) + { + net = host_create_from_string(end->address, 0); + if (net) + { + ts = traffic_selector_create_from_subnet(net, 0, end->protocol, + end->port); + child_cfg->add_traffic_selector(child_cfg, local, ts); + } + } + else + { + char *del, *start, *bits; + + start = end->subnets; + do + { + int intbits = 0; + + del = strchr(start, ','); + if (del) + { + *del = '\0'; + } + bits = strchr(start, '/'); + if (bits) + { + *bits = '\0'; + intbits = atoi(bits + 1); + } + + net = host_create_from_string(start, 0); + if (net) + { + ts = traffic_selector_create_from_subnet(net, intbits, + end->protocol, end->port); + child_cfg->add_traffic_selector(child_cfg, local, ts); + } + else + { + DBG1(DBG_CFG, "invalid subnet: %s, skipped", start); + } + start = del + 1; + } + while (del); + } + } +} + +/** + * build a child config from the stroke message + */ +static child_cfg_t *build_child_cfg(private_stroke_config_t *this, + stroke_msg_t *msg) +{ + child_cfg_t *child_cfg; + action_t dpd; + lifetime_cfg_t lifetime = { + .time = { + .life = msg->add_conn.rekey.ipsec_lifetime, + .rekey = msg->add_conn.rekey.ipsec_lifetime - msg->add_conn.rekey.margin, + .jitter = msg->add_conn.rekey.margin * msg->add_conn.rekey.fuzz / 100 + }, + .bytes = { + .life = msg->add_conn.rekey.life_bytes, + .rekey = msg->add_conn.rekey.life_bytes - msg->add_conn.rekey.margin_bytes, + .jitter = msg->add_conn.rekey.margin_bytes * msg->add_conn.rekey.fuzz / 100 + }, + .packets = { + .life = msg->add_conn.rekey.life_packets, + .rekey = msg->add_conn.rekey.life_packets - msg->add_conn.rekey.margin_packets, + .jitter = msg->add_conn.rekey.margin_packets * msg->add_conn.rekey.fuzz / 100 + } + }; + + switch (msg->add_conn.dpd.action) + { /* map startes magic values to our action type */ + case 2: /* =hold */ + dpd = ACTION_ROUTE; + break; + case 3: /* =restart */ + dpd = ACTION_RESTART; + break; + default: + dpd = ACTION_NONE; + break; + } + + child_cfg = child_cfg_create( + msg->add_conn.name, &lifetime, + msg->add_conn.me.updown, msg->add_conn.me.hostaccess, + msg->add_conn.mode, dpd, dpd, msg->add_conn.ipcomp, + msg->add_conn.inactivity); + child_cfg->set_mipv6_options(child_cfg, msg->add_conn.proxy_mode, + msg->add_conn.install_policy); + add_ts(this, &msg->add_conn.me, child_cfg, TRUE); + add_ts(this, &msg->add_conn.other, child_cfg, FALSE); + + add_proposals(this, msg->add_conn.algorithms.esp, NULL, child_cfg); + + return child_cfg; +} + +/** + * Implementation of stroke_config_t.add. + */ +static void add(private_stroke_config_t *this, stroke_msg_t *msg) +{ + ike_cfg_t *ike_cfg, *existing_ike; + peer_cfg_t *peer_cfg, *existing; + child_cfg_t *child_cfg; + enumerator_t *enumerator; + bool use_existing = FALSE; + + ike_cfg = build_ike_cfg(this, msg); + if (!ike_cfg) + { + return; + } + peer_cfg = build_peer_cfg(this, msg, ike_cfg); + if (!peer_cfg) + { + ike_cfg->destroy(ike_cfg); + return; + } + + enumerator = create_peer_cfg_enumerator(this, NULL, NULL); + while (enumerator->enumerate(enumerator, &existing)) + { + existing_ike = existing->get_ike_cfg(existing); + if (existing->equals(existing, peer_cfg) && + existing_ike->equals(existing_ike, peer_cfg->get_ike_cfg(peer_cfg))) + { + use_existing = TRUE; + peer_cfg->destroy(peer_cfg); + peer_cfg = existing; + peer_cfg->get_ref(peer_cfg); + DBG1(DBG_CFG, "added child to existing configuration '%s'", + peer_cfg->get_name(peer_cfg)); + break; + } + } + enumerator->destroy(enumerator); + + child_cfg = build_child_cfg(this, msg); + if (!child_cfg) + { + peer_cfg->destroy(peer_cfg); + return; + } + peer_cfg->add_child_cfg(peer_cfg, child_cfg); + + if (use_existing) + { + peer_cfg->destroy(peer_cfg); + } + else + { + /* add config to backend */ + DBG1(DBG_CFG, "added configuration '%s'", msg->add_conn.name); + this->mutex->lock(this->mutex); + this->list->insert_last(this->list, peer_cfg); + this->mutex->unlock(this->mutex); + } +} + +/** + * Implementation of stroke_config_t.del. + */ +static void del(private_stroke_config_t *this, stroke_msg_t *msg) +{ + enumerator_t *enumerator, *children; + peer_cfg_t *peer; + child_cfg_t *child; + bool deleted = FALSE; + + this->mutex->lock(this->mutex); + enumerator = this->list->create_enumerator(this->list); + while (enumerator->enumerate(enumerator, (void**)&peer)) + { + bool keep = FALSE; + + /* remove any child with such a name */ + children = peer->create_child_cfg_enumerator(peer); + while (children->enumerate(children, &child)) + { + if (streq(child->get_name(child), msg->del_conn.name)) + { + peer->remove_child_cfg(peer, children); + child->destroy(child); + deleted = TRUE; + } + else + { + keep = TRUE; + } + } + children->destroy(children); + + /* if peer config matches, or has no children anymore, remove it */ + if (!keep || streq(peer->get_name(peer), msg->del_conn.name)) + { + this->list->remove_at(this->list, enumerator); + peer->destroy(peer); + deleted = TRUE; + } + } + enumerator->destroy(enumerator); + this->mutex->unlock(this->mutex); + + if (deleted) + { + DBG1(DBG_CFG, "deleted connection '%s'", msg->del_conn.name); + } + else + { + DBG1(DBG_CFG, "connection '%s' not found", msg->del_conn.name); + } +} + +/** + * Implementation of stroke_config_t.destroy + */ +static void destroy(private_stroke_config_t *this) +{ + this->list->destroy_offset(this->list, offsetof(peer_cfg_t, destroy)); + this->mutex->destroy(this->mutex); + free(this); +} + +/* + * see header file + */ +stroke_config_t *stroke_config_create(stroke_ca_t *ca, stroke_cred_t *cred) +{ + private_stroke_config_t *this = malloc_thing(private_stroke_config_t); + + this->public.backend.create_peer_cfg_enumerator = (enumerator_t*(*)(backend_t*, identification_t *me, identification_t *other))create_peer_cfg_enumerator; + this->public.backend.create_ike_cfg_enumerator = (enumerator_t*(*)(backend_t*, host_t *me, host_t *other))create_ike_cfg_enumerator; + this->public.backend.get_peer_cfg_by_name = (peer_cfg_t* (*)(backend_t*,char*))get_peer_cfg_by_name; + this->public.add = (void(*)(stroke_config_t*, stroke_msg_t *msg))add; + this->public.del = (void(*)(stroke_config_t*, stroke_msg_t *msg))del; + this->public.destroy = (void(*)(stroke_config_t*))destroy; + + this->list = linked_list_create(); + this->mutex = mutex_create(MUTEX_TYPE_RECURSIVE); + this->ca = ca; + this->cred = cred; + + return &this->public; +} + diff --git a/src/libcharon/plugins/stroke/stroke_config.h b/src/libcharon/plugins/stroke/stroke_config.h new file mode 100644 index 000000000..05e4665ca --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_config.h @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup stroke_config stroke_config + * @{ @ingroup stroke + */ + +#ifndef STROKE_CONFIG_H_ +#define STROKE_CONFIG_H_ + +#include <config/backend.h> +#include <stroke_msg.h> +#include "stroke_ca.h" +#include "stroke_cred.h" + +typedef struct stroke_config_t stroke_config_t; + +/** + * Stroke in-memory configuration backend + */ +struct stroke_config_t { + + /** + * Implements the backend_t interface + */ + backend_t backend; + + /** + * Add a configuration to the backend. + * + * @param msg received stroke message containing config + */ + void (*add)(stroke_config_t *this, stroke_msg_t *msg); + + /** + * Remove a configuration from the backend. + * + * @param msg received stroke message containing config name + */ + void (*del)(stroke_config_t *this, stroke_msg_t *msg); + + /** + * Destroy a stroke_config instance. + */ + void (*destroy)(stroke_config_t *this); +}; + +/** + * Create a stroke_config instance. + */ +stroke_config_t *stroke_config_create(stroke_ca_t *ca, stroke_cred_t *cred); + +#endif /** STROKE_CONFIG_H_ @}*/ diff --git a/src/libcharon/plugins/stroke/stroke_control.c b/src/libcharon/plugins/stroke/stroke_control.c new file mode 100644 index 000000000..a03aef697 --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_control.c @@ -0,0 +1,491 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "stroke_control.h" + +#include <daemon.h> +#include <processing/jobs/delete_ike_sa_job.h> + +typedef struct private_stroke_control_t private_stroke_control_t; + +/** + * private data of stroke_control + */ +struct private_stroke_control_t { + + /** + * public functions + */ + stroke_control_t public; +}; + + +typedef struct stroke_log_info_t stroke_log_info_t; + +/** + * helper struct to say what and where to log when using controller callback + */ +struct stroke_log_info_t { + + /** + * level to log up to + */ + level_t level; + + /** + * where to write log + */ + FILE* out; +}; + +/** + * logging to the stroke interface + */ +static bool stroke_log(stroke_log_info_t *info, debug_t group, level_t level, + ike_sa_t *ike_sa, char *format, va_list args) +{ + if (level <= info->level) + { + if (vfprintf(info->out, format, args) < 0 || + fprintf(info->out, "\n") < 0 || + fflush(info->out) != 0) + { + return FALSE; + } + } + return TRUE; +} + +/** + * get the child_cfg with the same name as the peer cfg + */ +static child_cfg_t* get_child_from_peer(peer_cfg_t *peer_cfg, char *name) +{ + child_cfg_t *current, *found = NULL; + enumerator_t *enumerator; + + enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg); + while (enumerator->enumerate(enumerator, ¤t)) + { + if (streq(current->get_name(current), name)) + { + found = current; + found->get_ref(found); + break; + } + } + enumerator->destroy(enumerator); + return found; +} + +/** + * Implementation of stroke_control_t.initiate. + */ +static void initiate(private_stroke_control_t *this, stroke_msg_t *msg, FILE *out) +{ + peer_cfg_t *peer_cfg; + child_cfg_t *child_cfg; + stroke_log_info_t info; + + peer_cfg = charon->backends->get_peer_cfg_by_name(charon->backends, + msg->initiate.name); + if (peer_cfg == NULL) + { + DBG1(DBG_CFG, "no config named '%s'\n", msg->initiate.name); + return; + } + if (peer_cfg->get_ike_version(peer_cfg) != 2) + { + DBG1(DBG_CFG, "ignoring initiation request for IKEv%d config", + peer_cfg->get_ike_version(peer_cfg)); + peer_cfg->destroy(peer_cfg); + return; + } + + child_cfg = get_child_from_peer(peer_cfg, msg->initiate.name); + if (child_cfg == NULL) + { + DBG1(DBG_CFG, "no child config named '%s'\n", msg->initiate.name); + peer_cfg->destroy(peer_cfg); + return; + } + + if (msg->output_verbosity < 0) + { + charon->controller->initiate(charon->controller, peer_cfg, child_cfg, + NULL, NULL); + } + else + { + info.out = out; + info.level = msg->output_verbosity; + charon->controller->initiate(charon->controller, peer_cfg, child_cfg, + (controller_cb_t)stroke_log, &info); + } +} + +/** + * Implementation of stroke_control_t.terminate. + */ +static void terminate(private_stroke_control_t *this, stroke_msg_t *msg, FILE *out) +{ + char *string, *pos = NULL, *name = NULL; + u_int32_t id = 0; + bool child, all = FALSE; + int len; + ike_sa_t *ike_sa; + enumerator_t *enumerator; + linked_list_t *ike_list, *child_list; + stroke_log_info_t info; + uintptr_t del; + + string = msg->terminate.name; + + len = strlen(string); + if (len < 1) + { + DBG1(DBG_CFG, "error parsing string"); + return; + } + switch (string[len-1]) + { + case '}': + child = TRUE; + pos = strchr(string, '{'); + break; + case ']': + child = FALSE; + pos = strchr(string, '['); + break; + default: + name = string; + child = FALSE; + break; + } + + if (name) + { + /* is a single name */ + } + else if (pos == string + len - 2) + { /* is name[] or name{} */ + string[len-2] = '\0'; + name = string; + } + else + { + if (*(pos + 1) == '*') + { /* is name[*] */ + all = TRUE; + *pos = '\0'; + name = string; + } + else + { /* is name[123] or name{23} */ + id = atoi(pos + 1); + if (id == 0) + { + DBG1(DBG_CFG, "error parsing string"); + return; + } + } + } + + info.out = out; + info.level = msg->output_verbosity; + + if (id) + { + if (child) + { + charon->controller->terminate_child(charon->controller, id, + (controller_cb_t)stroke_log, &info); + } + else + { + charon->controller->terminate_ike(charon->controller, id, + (controller_cb_t)stroke_log, &info); + } + return; + } + + ike_list = linked_list_create(); + child_list = linked_list_create(); + enumerator = charon->controller->create_ike_sa_enumerator(charon->controller); + while (enumerator->enumerate(enumerator, &ike_sa)) + { + child_sa_t *child_sa; + iterator_t *children; + + if (child) + { + children = ike_sa->create_child_sa_iterator(ike_sa); + while (children->iterate(children, (void**)&child_sa)) + { + if (streq(name, child_sa->get_name(child_sa))) + { + child_list->insert_last(child_list, + (void*)(uintptr_t)child_sa->get_reqid(child_sa)); + if (!all) + { + break; + } + } + } + children->destroy(children); + if (child_list->get_count(child_list) && !all) + { + break; + } + } + else if (streq(name, ike_sa->get_name(ike_sa))) + { + ike_list->insert_last(ike_list, + (void*)(uintptr_t)ike_sa->get_unique_id(ike_sa)); + if (!all) + { + break; + } + } + } + enumerator->destroy(enumerator); + + enumerator = child_list->create_enumerator(child_list); + while (enumerator->enumerate(enumerator, &del)) + { + charon->controller->terminate_child(charon->controller, del, + (controller_cb_t)stroke_log, &info); + } + enumerator->destroy(enumerator); + + enumerator = ike_list->create_enumerator(ike_list); + while (enumerator->enumerate(enumerator, &del)) + { + charon->controller->terminate_ike(charon->controller, del, + (controller_cb_t)stroke_log, &info); + } + enumerator->destroy(enumerator); + + if (child_list->get_count(child_list) == 0 && + ike_list->get_count(ike_list) == 0) + { + DBG1(DBG_CFG, "no %s_SA named '%s' found", + child ? "CHILD" : "IKE", name); + } + ike_list->destroy(ike_list); + child_list->destroy(child_list); +} + +/** + * Implementation of stroke_control_t.terminate_srcip. + */ +static void terminate_srcip(private_stroke_control_t *this, + stroke_msg_t *msg, FILE *out) +{ + enumerator_t *enumerator; + ike_sa_t *ike_sa; + host_t *start = NULL, *end = NULL, *vip; + chunk_t chunk_start, chunk_end = chunk_empty, chunk_vip; + + if (msg->terminate_srcip.start) + { + start = host_create_from_string(msg->terminate_srcip.start, 0); + } + if (!start) + { + DBG1(DBG_CFG, "invalid start address: %s", msg->terminate_srcip.start); + return; + } + chunk_start = start->get_address(start); + if (msg->terminate_srcip.end) + { + end = host_create_from_string(msg->terminate_srcip.end, 0); + if (!end) + { + DBG1(DBG_CFG, "invalid end address: %s", msg->terminate_srcip.end); + start->destroy(start); + return; + } + chunk_end = end->get_address(end); + } + + enumerator = charon->controller->create_ike_sa_enumerator(charon->controller); + while (enumerator->enumerate(enumerator, &ike_sa)) + { + vip = ike_sa->get_virtual_ip(ike_sa, FALSE); + if (!vip) + { + continue; + } + if (!end) + { + if (!vip->ip_equals(vip, start)) + { + continue; + } + } + else + { + chunk_vip = vip->get_address(vip); + if (chunk_vip.len != chunk_start.len || + chunk_vip.len != chunk_end.len || + memcmp(chunk_vip.ptr, chunk_start.ptr, chunk_vip.len) < 0 || + memcmp(chunk_vip.ptr, chunk_end.ptr, chunk_vip.len) > 0) + { + continue; + } + } + + /* schedule delete asynchronously */ + charon->processor->queue_job(charon->processor, (job_t*) + delete_ike_sa_job_create(ike_sa->get_id(ike_sa), TRUE)); + } + enumerator->destroy(enumerator); + start->destroy(start); + DESTROY_IF(end); +} + +/** + * Implementation of stroke_control_t.purge_ike + */ +static void purge_ike(private_stroke_control_t *this, stroke_msg_t *msg, FILE *out) +{ + enumerator_t *enumerator; + iterator_t *iterator; + ike_sa_t *ike_sa; + child_sa_t *child_sa; + linked_list_t *list; + uintptr_t del; + stroke_log_info_t info; + + info.out = out; + info.level = msg->output_verbosity; + + list = linked_list_create(); + enumerator = charon->controller->create_ike_sa_enumerator(charon->controller); + while (enumerator->enumerate(enumerator, &ike_sa)) + { + iterator = ike_sa->create_child_sa_iterator(ike_sa); + if (!iterator->iterate(iterator, (void**)&child_sa)) + { + list->insert_last(list, + (void*)(uintptr_t)ike_sa->get_unique_id(ike_sa)); + } + iterator->destroy(iterator); + } + enumerator->destroy(enumerator); + + enumerator = list->create_enumerator(list); + while (enumerator->enumerate(enumerator, &del)) + { + charon->controller->terminate_ike(charon->controller, del, + (controller_cb_t)stroke_log, &info); + } + enumerator->destroy(enumerator); + list->destroy(list); +} + +/** + * Implementation of stroke_control_t.route. + */ +static void route(private_stroke_control_t *this, stroke_msg_t *msg, FILE *out) +{ + peer_cfg_t *peer_cfg; + child_cfg_t *child_cfg; + + peer_cfg = charon->backends->get_peer_cfg_by_name(charon->backends, + msg->route.name); + if (peer_cfg == NULL) + { + fprintf(out, "no config named '%s'\n", msg->route.name); + return; + } + if (peer_cfg->get_ike_version(peer_cfg) != 2) + { + peer_cfg->destroy(peer_cfg); + return; + } + + child_cfg = get_child_from_peer(peer_cfg, msg->route.name); + if (child_cfg == NULL) + { + fprintf(out, "no child config named '%s'\n", msg->route.name); + peer_cfg->destroy(peer_cfg); + return; + } + + if (charon->traps->install(charon->traps, peer_cfg, child_cfg)) + { + fprintf(out, "configuration '%s' routed\n", msg->route.name); + } + else + { + fprintf(out, "routing configuration '%s' failed\n", msg->route.name); + } + peer_cfg->destroy(peer_cfg); + child_cfg->destroy(child_cfg); +} + +/** + * Implementation of stroke_control_t.unroute. + */ +static void unroute(private_stroke_control_t *this, stroke_msg_t *msg, FILE *out) +{ + child_sa_t *child_sa; + enumerator_t *enumerator; + u_int32_t id; + + enumerator = charon->traps->create_enumerator(charon->traps); + while (enumerator->enumerate(enumerator, NULL, &child_sa)) + { + if (streq(msg->unroute.name, child_sa->get_name(child_sa))) + { + id = child_sa->get_reqid(child_sa); + enumerator->destroy(enumerator); + charon->traps->uninstall(charon->traps, id); + fprintf(out, "configuration '%s' unrouted\n", msg->unroute.name); + return; + } + } + enumerator->destroy(enumerator); + fprintf(out, "configuration '%s' not found\n", msg->unroute.name); +} + +/** + * Implementation of stroke_control_t.destroy + */ +static void destroy(private_stroke_control_t *this) +{ + free(this); +} + +/* + * see header file + */ +stroke_control_t *stroke_control_create() +{ + private_stroke_control_t *this = malloc_thing(private_stroke_control_t); + + this->public.initiate = (void(*)(stroke_control_t*, stroke_msg_t *msg, FILE *out))initiate; + this->public.terminate = (void(*)(stroke_control_t*, stroke_msg_t *msg, FILE *out))terminate; + this->public.terminate_srcip = (void(*)(stroke_control_t*, stroke_msg_t *msg, FILE *out))terminate_srcip; + this->public.purge_ike = (void(*)(stroke_control_t*, stroke_msg_t *msg, FILE *out))purge_ike; + this->public.route = (void(*)(stroke_control_t*, stroke_msg_t *msg, FILE *out))route; + this->public.unroute = (void(*)(stroke_control_t*, stroke_msg_t *msg, FILE *out))unroute; + this->public.destroy = (void(*)(stroke_control_t*))destroy; + + return &this->public; +} + diff --git a/src/libcharon/plugins/stroke/stroke_control.h b/src/libcharon/plugins/stroke/stroke_control.h new file mode 100644 index 000000000..9b49bdc31 --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_control.h @@ -0,0 +1,88 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup stroke_control stroke_control + * @{ @ingroup stroke + */ + +#ifndef STROKE_CONTROL_H_ +#define STROKE_CONTROL_H_ + +#include <stroke_msg.h> +#include <library.h> +#include <stdio.h> + +typedef struct stroke_control_t stroke_control_t; + +/** + * Process stroke control messages + */ +struct stroke_control_t { + + /** + * Initiate a connection. + * + * @param msg stroke message + */ + void (*initiate)(stroke_control_t *this, stroke_msg_t *msg, FILE *out); + + /** + * Terminate a connection. + * + * @param msg stroke message + */ + void (*terminate)(stroke_control_t *this, stroke_msg_t *msg, FILE *out); + + /** + * Terminate a connection by peers virtual IP. + * + * @param msg stroke message + */ + void (*terminate_srcip)(stroke_control_t *this, stroke_msg_t *msg, FILE *out); + + /** + * Delete IKE_SAs without a CHILD_SA. + * + * @param msg stroke message + */ + void (*purge_ike)(stroke_control_t *this, stroke_msg_t *msg, FILE *out); + + /** + * Route a connection. + * + * @param msg stroke message + */ + void (*route)(stroke_control_t *this, stroke_msg_t *msg, FILE *out); + + /** + * Unroute a connection. + * + * @param msg stroke message + */ + void (*unroute)(stroke_control_t *this, stroke_msg_t *msg, FILE *out); + + /** + * Destroy a stroke_control instance. + */ + void (*destroy)(stroke_control_t *this); +}; + +/** + * Create a stroke_control instance. + */ +stroke_control_t *stroke_control_create(); + +#endif /** STROKE_CONTROL_H_ @}*/ diff --git a/src/libcharon/plugins/stroke/stroke_cred.c b/src/libcharon/plugins/stroke/stroke_cred.c new file mode 100644 index 000000000..e0a5210a9 --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_cred.c @@ -0,0 +1,1175 @@ +/* + * Copyright (C) 2008 Tobias Brunner + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <sys/stat.h> +#include <limits.h> +#include <glob.h> +#include <libgen.h> + +#include "stroke_cred.h" +#include "stroke_shared_key.h" + +#include <credentials/certificates/x509.h> +#include <credentials/certificates/crl.h> +#include <credentials/certificates/ac.h> +#include <utils/linked_list.h> +#include <utils/lexparser.h> +#include <threading/rwlock.h> +#include <daemon.h> + +/* configuration directories and files */ +#define CONFIG_DIR IPSEC_CONFDIR +#define IPSEC_D_DIR CONFIG_DIR "/ipsec.d" +#define PRIVATE_KEY_DIR IPSEC_D_DIR "/private" +#define CERTIFICATE_DIR IPSEC_D_DIR "/certs" +#define CA_CERTIFICATE_DIR IPSEC_D_DIR "/cacerts" +#define AA_CERTIFICATE_DIR IPSEC_D_DIR "/aacerts" +#define ATTR_CERTIFICATE_DIR IPSEC_D_DIR "/acerts" +#define OCSP_CERTIFICATE_DIR IPSEC_D_DIR "/ocspcerts" +#define CRL_DIR IPSEC_D_DIR "/crls" +#define SECRETS_FILE CONFIG_DIR "/ipsec.secrets" + +#define MAX_SECRETS_RECURSION 10 + +typedef struct private_stroke_cred_t private_stroke_cred_t; + +/** + * private data of stroke_cred + */ +struct private_stroke_cred_t { + + /** + * public functions + */ + stroke_cred_t public; + + /** + * list of trusted peer/signer/CA certificates (certificate_t) + */ + linked_list_t *certs; + + /** + * list of shared secrets (private_shared_key_t) + */ + linked_list_t *shared; + + /** + * list of private keys (private_key_t) + */ + linked_list_t *private; + + /** + * read-write lock to lists + */ + rwlock_t *lock; + + /** + * cache CRLs to disk? + */ + bool cachecrl; +}; + +/** + * data to pass to various filters + */ +typedef struct { + private_stroke_cred_t *this; + identification_t *id; + certificate_type_t type; +} id_data_t; + +/** + * destroy id enumerator data and unlock list + */ +static void id_data_destroy(id_data_t *data) +{ + data->this->lock->unlock(data->this->lock); + free(data); +} + +/** + * filter function for private key enumerator + */ +static bool private_filter(id_data_t *data, + private_key_t **in, private_key_t **out) +{ + private_key_t *key; + + key = *in; + if (data->id == NULL) + { + *out = key; + return TRUE; + } + if (key->has_fingerprint(key, data->id->get_encoding(data->id))) + { + *out = key; + return TRUE; + } + return FALSE; +} + +/** + * Implements credential_set_t.create_private_enumerator + */ +static enumerator_t* create_private_enumerator(private_stroke_cred_t *this, + key_type_t type, identification_t *id) +{ + id_data_t *data; + + data = malloc_thing(id_data_t); + data->this = this; + data->id = id; + + this->lock->read_lock(this->lock); + return enumerator_create_filter(this->private->create_enumerator(this->private), + (void*)private_filter, data, + (void*)id_data_destroy); +} + +/** + * filter function for certs enumerator + */ +static bool certs_filter(id_data_t *data, certificate_t **in, certificate_t **out) +{ + public_key_t *public; + certificate_t *cert = *in; + + if (data->type != CERT_ANY && data->type != cert->get_type(cert)) + { + return FALSE; + } + if (data->id == NULL || cert->has_subject(cert, data->id)) + { + *out = *in; + return TRUE; + } + + public = cert->get_public_key(cert); + if (public) + { + if (public->has_fingerprint(public, data->id->get_encoding(data->id))) + { + public->destroy(public); + *out = *in; + return TRUE; + } + public->destroy(public); + } + return FALSE; +} + +/** + * Implements credential_set_t.create_cert_enumerator + */ +static enumerator_t* create_cert_enumerator(private_stroke_cred_t *this, + certificate_type_t cert, key_type_t key, + identification_t *id, bool trusted) +{ + id_data_t *data; + + if (trusted && (cert == CERT_X509_CRL || cert == CERT_X509_AC)) + { + return NULL; + } + data = malloc_thing(id_data_t); + data->this = this; + data->id = id; + data->type = cert; + + this->lock->read_lock(this->lock); + return enumerator_create_filter(this->certs->create_enumerator(this->certs), + (void*)certs_filter, data, + (void*)id_data_destroy); +} + +typedef struct { + private_stroke_cred_t *this; + identification_t *me; + identification_t *other; + shared_key_type_t type; +} shared_data_t; + +/** + * free shared key enumerator data and unlock list + */ +static void shared_data_destroy(shared_data_t *data) +{ + data->this->lock->unlock(data->this->lock); + free(data); +} + +/** + * filter function for certs enumerator + */ +static bool shared_filter(shared_data_t *data, + stroke_shared_key_t **in, shared_key_t **out, + void **unused1, id_match_t *me, + void **unused2, id_match_t *other) +{ + id_match_t my_match = ID_MATCH_NONE, other_match = ID_MATCH_NONE; + stroke_shared_key_t *stroke = *in; + shared_key_t *shared = &stroke->shared; + + if (data->type != SHARED_ANY && shared->get_type(shared) != data->type) + { + return FALSE; + } + + if (data->me) + { + my_match = stroke->has_owner(stroke, data->me); + } + if (data->other) + { + other_match = stroke->has_owner(stroke, data->other); + } + if ((data->me || data->other) && (!my_match && !other_match)) + { + return FALSE; + } + *out = shared; + if (me) + { + *me = my_match; + } + if (other) + { + *other = other_match; + } + return TRUE; +} + +/** + * Implements credential_set_t.create_shared_enumerator + */ +static enumerator_t* create_shared_enumerator(private_stroke_cred_t *this, + shared_key_type_t type, identification_t *me, + identification_t *other) +{ + shared_data_t *data = malloc_thing(shared_data_t); + + data->this = this; + data->me = me; + data->other = other; + data->type = type; + this->lock->read_lock(this->lock); + return enumerator_create_filter(this->shared->create_enumerator(this->shared), + (void*)shared_filter, data, + (void*)shared_data_destroy); +} + +/** + * Add a certificate to chain + */ +static certificate_t* add_cert(private_stroke_cred_t *this, certificate_t *cert) +{ + certificate_t *current; + enumerator_t *enumerator; + bool new = TRUE; + + this->lock->read_lock(this->lock); + enumerator = this->certs->create_enumerator(this->certs); + while (enumerator->enumerate(enumerator, (void**)¤t)) + { + if (current->equals(current, cert)) + { + /* cert already in queue */ + cert->destroy(cert); + cert = current; + new = FALSE; + break; + } + } + enumerator->destroy(enumerator); + + if (new) + { + this->certs->insert_last(this->certs, cert); + } + this->lock->unlock(this->lock); + return cert; +} + +/** + * Implementation of stroke_cred_t.load_ca. + */ +static certificate_t* load_ca(private_stroke_cred_t *this, char *filename) +{ + certificate_t *cert; + char path[PATH_MAX]; + + if (*filename == '/') + { + snprintf(path, sizeof(path), "%s", filename); + } + else + { + snprintf(path, sizeof(path), "%s/%s", CA_CERTIFICATE_DIR, filename); + } + + cert = lib->creds->create(lib->creds, + CRED_CERTIFICATE, CERT_X509, + BUILD_FROM_FILE, path, + BUILD_END); + if (cert) + { + x509_t *x509 = (x509_t*)cert; + + if (!(x509->get_flags(x509) & X509_CA)) + { + DBG1(DBG_CFG, " ca certificate \"%Y\" misses ca basic constraint, " + "discarded", cert->get_subject(cert)); + cert->destroy(cert); + return NULL; + } + return (certificate_t*)add_cert(this, cert); + } + return NULL; +} + +/** + * Add X.509 CRL to chain + */ +static bool add_crl(private_stroke_cred_t *this, crl_t* crl) +{ + certificate_t *current, *cert = &crl->certificate; + enumerator_t *enumerator; + bool new = TRUE, found = FALSE; + + this->lock->write_lock(this->lock); + enumerator = this->certs->create_enumerator(this->certs); + while (enumerator->enumerate(enumerator, (void**)¤t)) + { + if (current->get_type(current) == CERT_X509_CRL) + { + crl_t *crl_c = (crl_t*)current; + chunk_t authkey = crl->get_authKeyIdentifier(crl); + chunk_t authkey_c = crl_c->get_authKeyIdentifier(crl_c); + + /* if compare authorityKeyIdentifiers if available */ + if (authkey.ptr && authkey_c.ptr && chunk_equals(authkey, authkey_c)) + { + found = TRUE; + } + else + { + identification_t *issuer = cert->get_issuer(cert); + identification_t *issuer_c = current->get_issuer(current); + + /* otherwise compare issuer distinguished names */ + if (issuer->equals(issuer, issuer_c)) + { + found = TRUE; + } + } + if (found) + { + new = cert->is_newer(cert, current); + if (new) + { + this->certs->remove_at(this->certs, enumerator); + } + else + { + cert->destroy(cert); + } + break; + } + } + } + enumerator->destroy(enumerator); + + if (new) + { + this->certs->insert_last(this->certs, cert); + } + this->lock->unlock(this->lock); + return new; +} + +/** + * Add X.509 attribute certificate to chain + */ +static bool add_ac(private_stroke_cred_t *this, ac_t* ac) +{ + certificate_t *cert = &ac->certificate; + + this->lock->write_lock(this->lock); + this->certs->insert_last(this->certs, cert); + this->lock->unlock(this->lock); + return TRUE; +} + +/** + * Implementation of stroke_cred_t.load_peer. + */ +static certificate_t* load_peer(private_stroke_cred_t *this, char *filename) +{ + certificate_t *cert; + char path[PATH_MAX]; + + if (*filename == '/') + { + snprintf(path, sizeof(path), "%s", filename); + } + else + { + snprintf(path, sizeof(path), "%s/%s", CERTIFICATE_DIR, filename); + } + + cert = lib->creds->create(lib->creds, + CRED_CERTIFICATE, CERT_ANY, + BUILD_FROM_FILE, path, + BUILD_END); + if (cert) + { + cert = add_cert(this, cert); + DBG1(DBG_CFG, " loaded certificate \"%Y\" from '%s'", + cert->get_subject(cert), filename); + return cert->get_ref(cert); + } + DBG1(DBG_CFG, " loading certificate from '%s' failed", filename); + return NULL; +} + +/** + * load trusted certificates from a directory + */ +static void load_certdir(private_stroke_cred_t *this, char *path, + certificate_type_t type, x509_flag_t flag) +{ + struct stat st; + char *file; + + enumerator_t *enumerator = enumerator_create_directory(path); + + if (!enumerator) + { + DBG1(DBG_CFG, " reading directory failed"); + return; + } + + while (enumerator->enumerate(enumerator, NULL, &file, &st)) + { + certificate_t *cert; + + if (!S_ISREG(st.st_mode)) + { + /* skip special file */ + continue; + } + switch (type) + { + case CERT_X509: + if (flag & X509_CA) + { /* for CA certificates, we strictly require + * the CA basic constraint to be set */ + cert = lib->creds->create(lib->creds, + CRED_CERTIFICATE, CERT_X509, + BUILD_FROM_FILE, file, BUILD_END); + if (cert) + { + x509_t *x509 = (x509_t*)cert; + + if (!(x509->get_flags(x509) & X509_CA)) + { + DBG1(DBG_CFG, " ca certificate \"%Y\" lacks " + "ca basic constraint, discarded", + cert->get_subject(cert)); + cert->destroy(cert); + cert = NULL; + } + else + { + DBG1(DBG_CFG, " loaded ca certificate \"%Y\" from '%s'", + cert->get_subject(cert), file); + } + } + else + { + DBG1(DBG_CFG, " loading ca certificate from '%s' " + "failed", file); + } + } + else + { /* for all other flags, we add them to the certificate. */ + cert = lib->creds->create(lib->creds, + CRED_CERTIFICATE, CERT_X509, + BUILD_FROM_FILE, file, + BUILD_X509_FLAG, flag, BUILD_END); + if (cert) + { + DBG1(DBG_CFG, " loaded certificate \"%Y\" from '%s'", + cert->get_subject(cert), file); + } + else + { + DBG1(DBG_CFG, " loading certificate from '%s' " + "failed", file); + } + } + if (cert) + { + add_cert(this, cert); + } + break; + case CERT_X509_CRL: + cert = lib->creds->create(lib->creds, + CRED_CERTIFICATE, CERT_X509_CRL, + BUILD_FROM_FILE, file, + BUILD_END); + if (cert) + { + add_crl(this, (crl_t*)cert); + DBG1(DBG_CFG, " loaded crl from '%s'", file); + } + else + { + DBG1(DBG_CFG, " loading crl from '%s' failed", file); + } + break; + case CERT_X509_AC: + cert = lib->creds->create(lib->creds, + CRED_CERTIFICATE, CERT_X509_AC, + BUILD_FROM_FILE, file, + BUILD_END); + if (cert) + { + add_ac(this, (ac_t*)cert); + DBG1(DBG_CFG, " loaded attribute certificate from '%s'", + file); + } + else + { + DBG1(DBG_CFG, " loading attribute certificate from '%s' " + "failed", file); + } + break; + default: + break; + } + } + enumerator->destroy(enumerator); +} + +/** + * Implementation of credential_set_t.cache_cert. + */ +static void cache_cert(private_stroke_cred_t *this, certificate_t *cert) +{ + if (cert->get_type(cert) == CERT_X509_CRL && this->cachecrl) + { + /* CRLs get written to /etc/ipsec.d/crls/<authkeyId>.crl */ + crl_t *crl = (crl_t*)cert; + + cert->get_ref(cert); + if (add_crl(this, crl)) + { + char buf[BUF_LEN]; + chunk_t chunk, hex; + + chunk = crl->get_authKeyIdentifier(crl); + hex = chunk_to_hex(chunk, NULL, FALSE); + snprintf(buf, sizeof(buf), "%s/%s.crl", CRL_DIR, hex); + free(hex.ptr); + + chunk = cert->get_encoding(cert); + chunk_write(chunk, buf, "crl", 022, TRUE); + free(chunk.ptr); + } + } +} + +/** + * Implementation of stroke_cred_t.cachecrl. + */ +static void cachecrl(private_stroke_cred_t *this, bool enabled) +{ + DBG1(DBG_CFG, "crl caching to %s %s", + CRL_DIR, enabled ? "enabled" : "disabled"); + this->cachecrl = enabled; +} + + +/** + * Convert a string of characters into a binary secret + * A string between single or double quotes is treated as ASCII characters + * A string prepended by 0x is treated as HEX and prepended by 0s as Base64 + */ +static err_t extract_secret(chunk_t *secret, chunk_t *line) +{ + chunk_t raw_secret; + char delimiter = ' '; + bool quotes = FALSE; + + if (!eat_whitespace(line)) + { + return "missing secret"; + } + + if (*line->ptr == '\'' || *line->ptr == '"') + { + quotes = TRUE; + delimiter = *line->ptr; + line->ptr++; line->len--; + } + + if (!extract_token(&raw_secret, delimiter, line)) + { + if (delimiter == ' ') + { + raw_secret = *line; + } + else + { + return "missing second delimiter"; + } + } + + if (quotes) + { + /* treat as an ASCII string */ + *secret = chunk_clone(raw_secret); + return NULL; + } + /* treat 0x as hex, 0s as base64 */ + if (raw_secret.len > 2) + { + if (strncasecmp("0x", raw_secret.ptr, 2) == 0) + { + *secret = chunk_from_hex(chunk_skip(raw_secret, 2), NULL); + return NULL; + } + if (strncasecmp("0s", raw_secret.ptr, 2) == 0) + { + *secret = chunk_from_base64(chunk_skip(raw_secret, 2), NULL); + return NULL; + } + } + *secret = chunk_clone(raw_secret); + return NULL; +} + +/** + * Data to pass to passphrase_cb + */ +typedef struct { + /** socket we use for prompting */ + FILE *prompt; + /** private key file */ + char *file; + /** buffer for passphrase */ + char buf[256]; +} passphrase_cb_data_t; + +/** + * Passphrase callback to read from whack fd + */ +chunk_t passphrase_cb(passphrase_cb_data_t *data, int try) +{ + chunk_t secret = chunk_empty;; + + if (try > 5) + { + fprintf(data->prompt, "invalid passphrase, too many trials\n"); + return chunk_empty; + } + if (try == 1) + { + fprintf(data->prompt, "Private key '%s' is encrypted\n", data->file); + } + else + { + fprintf(data->prompt, "invalid passphrase\n"); + } + fprintf(data->prompt, "Passphrase:\n"); + if (fgets(data->buf, sizeof(data->buf), data->prompt)) + { + secret = chunk_create(data->buf, strlen(data->buf)); + if (secret.len) + { /* trim appended \n */ + secret.len--; + } + } + return secret; +} + +/** + * reload ipsec.secrets + */ +static void load_secrets(private_stroke_cred_t *this, char *file, int level, + FILE *prompt) +{ + size_t bytes; + int line_nr = 0; + chunk_t chunk, src, line; + FILE *fd; + private_key_t *private; + shared_key_t *shared; + + DBG1(DBG_CFG, "loading secrets from '%s'", file); + + fd = fopen(file, "r"); + if (fd == NULL) + { + DBG1(DBG_CFG, "opening secrets file '%s' failed", file); + return; + } + + /* TODO: do error checks */ + fseek(fd, 0, SEEK_END); + chunk.len = ftell(fd); + rewind(fd); + chunk.ptr = malloc(chunk.len); + bytes = fread(chunk.ptr, 1, chunk.len, fd); + fclose(fd); + src = chunk; + + if (level == 0) + { + this->lock->write_lock(this->lock); + + /* flush secrets on non-recursive invocation */ + while (this->shared->remove_last(this->shared, + (void**)&shared) == SUCCESS) + { + shared->destroy(shared); + } + while (this->private->remove_last(this->private, + (void**)&private) == SUCCESS) + { + private->destroy(private); + } + } + + while (fetchline(&src, &line)) + { + chunk_t ids, token; + shared_key_type_t type; + + line_nr++; + + if (!eat_whitespace(&line)) + { + continue; + } + if (line.len > strlen("include ") && + strneq(line.ptr, "include ", strlen("include "))) + { + glob_t buf; + char **expanded, *dir, pattern[PATH_MAX]; + u_char *pos; + + if (level > MAX_SECRETS_RECURSION) + { + DBG1(DBG_CFG, "maximum level of %d includes reached, ignored", + MAX_SECRETS_RECURSION); + continue; + } + /* terminate filename by space */ + line = chunk_skip(line, strlen("include ")); + pos = memchr(line.ptr, ' ', line.len); + if (pos) + { + line.len = pos - line.ptr; + } + if (line.len && line.ptr[0] == '/') + { + if (line.len + 1 > sizeof(pattern)) + { + DBG1(DBG_CFG, "include pattern too long, ignored"); + continue; + } + snprintf(pattern, sizeof(pattern), "%.*s", line.len, line.ptr); + } + else + { /* use directory of current file if relative */ + dir = strdup(file); + dir = dirname(dir); + + if (line.len + 1 + strlen(dir) + 1 > sizeof(pattern)) + { + DBG1(DBG_CFG, "include pattern too long, ignored"); + free(dir); + continue; + } + snprintf(pattern, sizeof(pattern), "%s/%.*s", + dir, line.len, line.ptr); + free(dir); + } + if (glob(pattern, GLOB_ERR, NULL, &buf) != 0) + { + DBG1(DBG_CFG, "expanding file expression '%s' failed", pattern); + globfree(&buf); + } + else + { + for (expanded = buf.gl_pathv; *expanded != NULL; expanded++) + { + load_secrets(this, *expanded, level + 1, prompt); + } + } + globfree(&buf); + continue; + } + + if (line.len > 2 && strneq(": ", line.ptr, 2)) + { + /* no ids, skip the ':' */ + ids = chunk_empty; + line.ptr++; + line.len--; + } + else if (extract_token_str(&ids, " : ", &line)) + { + /* NULL terminate the extracted id string */ + *(ids.ptr + ids.len) = '\0'; + } + else + { + DBG1(DBG_CFG, "line %d: missing ' : ' separator", line_nr); + goto error; + } + + if (!eat_whitespace(&line) || !extract_token(&token, ' ', &line)) + { + DBG1(DBG_CFG, "line %d: missing token", line_nr); + goto error; + } + if (match("RSA", &token) || match("ECDSA", &token)) + { + char path[PATH_MAX]; + chunk_t filename; + chunk_t secret = chunk_empty; + private_key_t *key = NULL; + key_type_t key_type = match("RSA", &token) ? KEY_RSA : KEY_ECDSA; + + err_t ugh = extract_value(&filename, &line); + + if (ugh != NULL) + { + DBG1(DBG_CFG, "line %d: %s", line_nr, ugh); + goto error; + } + if (filename.len == 0) + { + DBG1(DBG_CFG, "line %d: empty filename", line_nr); + goto error; + } + if (*filename.ptr == '/') + { + /* absolute path name */ + snprintf(path, sizeof(path), "%.*s", filename.len, filename.ptr); + } + else + { + /* relative path name */ + snprintf(path, sizeof(path), "%s/%.*s", PRIVATE_KEY_DIR, + filename.len, filename.ptr); + } + + /* check for optional passphrase */ + if (eat_whitespace(&line)) + { + ugh = extract_secret(&secret, &line); + if (ugh != NULL) + { + DBG1(DBG_CFG, "line %d: malformed passphrase: %s", line_nr, ugh); + goto error; + } + } + if (secret.len == 7 && strneq(secret.ptr, "%prompt", 7)) + { + if (prompt) + { + passphrase_cb_data_t data; + + data.prompt = prompt; + data.file = path; + key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, + key_type, BUILD_FROM_FILE, path, + BUILD_PASSPHRASE_CALLBACK, + passphrase_cb, &data, BUILD_END); + } + } + else + { + key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, key_type, + BUILD_FROM_FILE, path, + BUILD_PASSPHRASE, secret, BUILD_END); + } + if (key) + { + DBG1(DBG_CFG, " loaded %N private key from '%s'", + key_type_names, key->get_type(key), path); + this->private->insert_last(this->private, key); + } + else + { + DBG1(DBG_CFG, " loading private key from '%s' failed", path); + } + chunk_clear(&secret); + } + else if (match("PIN", &token)) + { + chunk_t sc = chunk_empty, secret = chunk_empty; + char smartcard[32], keyid[22], pin[32]; + private_key_t *key; + u_int slot; + + err_t ugh = extract_value(&sc, &line); + + if (ugh != NULL) + { + DBG1(DBG_CFG, "line %d: %s", line_nr, ugh); + goto error; + } + if (sc.len == 0) + { + DBG1(DBG_CFG, "line %d: expected %%smartcard specifier", line_nr); + goto error; + } + snprintf(smartcard, sizeof(smartcard), "%.*s", sc.len, sc.ptr); + smartcard[sizeof(smartcard) - 1] = '\0'; + + /* parse slot and key id. only two formats are supported. + * first try %smartcard<slot>:<keyid> */ + if (sscanf(smartcard, "%%smartcard%u:%s", &slot, keyid) == 2) + { + snprintf(smartcard, sizeof(smartcard), "%u:%s", slot, keyid); + } + /* then try %smartcard:<keyid> */ + else if (sscanf(smartcard, "%%smartcard:%s", keyid) == 1) + { + snprintf(smartcard, sizeof(smartcard), "%s", keyid); + } + else + { + DBG1(DBG_CFG, "line %d: the given %%smartcard specifier is not" + " supported or invalid", line_nr); + goto error; + } + + if (!eat_whitespace(&line)) + { + DBG1(DBG_CFG, "line %d: expected PIN", line_nr); + goto error; + } + ugh = extract_secret(&secret, &line); + if (ugh != NULL) + { + DBG1(DBG_CFG, "line %d: malformed PIN: %s", line_nr, ugh); + goto error; + } + snprintf(pin, sizeof(pin), "%.*s", secret.len, secret.ptr); + pin[sizeof(pin) - 1] = '\0'; + + /* we assume an RSA key */ + key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, KEY_RSA, + BUILD_SMARTCARD_KEYID, smartcard, + BUILD_SMARTCARD_PIN, pin, BUILD_END); + + if (key) + { + DBG1(DBG_CFG, " loaded private key from %.*s", sc.len, sc.ptr); + this->private->insert_last(this->private, key); + } + memset(pin, 0, sizeof(pin)); + chunk_clear(&secret); + } + else if ((match("PSK", &token) && (type = SHARED_IKE)) || + (match("EAP", &token) && (type = SHARED_EAP)) || + (match("NTLM", &token) && (type = SHARED_NT_HASH)) || + (match("XAUTH", &token) && (type = SHARED_EAP))) + { + stroke_shared_key_t *shared_key; + chunk_t secret = chunk_empty; + bool any = TRUE; + + err_t ugh = extract_secret(&secret, &line); + if (ugh != NULL) + { + DBG1(DBG_CFG, "line %d: malformed secret: %s", line_nr, ugh); + goto error; + } + shared_key = stroke_shared_key_create(type, secret); + DBG1(DBG_CFG, " loaded %N secret for %s", shared_key_type_names, type, + ids.len > 0 ? (char*)ids.ptr : "%any"); + DBG4(DBG_CFG, " secret: %#B", &secret); + + this->shared->insert_last(this->shared, shared_key); + while (ids.len > 0) + { + chunk_t id; + identification_t *peer_id; + + ugh = extract_value(&id, &ids); + if (ugh != NULL) + { + DBG1(DBG_CFG, "line %d: %s", line_nr, ugh); + goto error; + } + if (id.len == 0) + { + continue; + } + + /* NULL terminate the ID string */ + *(id.ptr + id.len) = '\0'; + peer_id = identification_create_from_string(id.ptr); + if (peer_id->get_type(peer_id) == ID_ANY) + { + peer_id->destroy(peer_id); + continue; + } + + shared_key->add_owner(shared_key, peer_id); + any = FALSE; + } + if (any) + { + shared_key->add_owner(shared_key, + identification_create_from_encoding(ID_ANY, chunk_empty)); + } + } + else + { + DBG1(DBG_CFG, "line %d: token must be either " + "RSA, ECDSA, PSK, EAP, XAUTH or PIN", line_nr); + goto error; + } + } +error: + if (level == 0) + { + this->lock->unlock(this->lock); + } + chunk_clear(&chunk); +} + +/** + * load all certificates from ipsec.d + */ +static void load_certs(private_stroke_cred_t *this) +{ + DBG1(DBG_CFG, "loading ca certificates from '%s'", + CA_CERTIFICATE_DIR); + load_certdir(this, CA_CERTIFICATE_DIR, CERT_X509, X509_CA); + + DBG1(DBG_CFG, "loading aa certificates from '%s'", + AA_CERTIFICATE_DIR); + load_certdir(this, AA_CERTIFICATE_DIR, CERT_X509, X509_AA); + + DBG1(DBG_CFG, "loading ocsp signer certificates from '%s'", + OCSP_CERTIFICATE_DIR); + load_certdir(this, OCSP_CERTIFICATE_DIR, CERT_X509, X509_OCSP_SIGNER); + + DBG1(DBG_CFG, "loading attribute certificates from '%s'", + ATTR_CERTIFICATE_DIR); + load_certdir(this, ATTR_CERTIFICATE_DIR, CERT_X509_AC, 0); + + DBG1(DBG_CFG, "loading crls from '%s'", + CRL_DIR); + load_certdir(this, CRL_DIR, CERT_X509_CRL, 0); +} + +/** + * Implementation of stroke_cred_t.reread. + */ +static void reread(private_stroke_cred_t *this, stroke_msg_t *msg, FILE *prompt) +{ + if (msg->reread.flags & REREAD_SECRETS) + { + DBG1(DBG_CFG, "rereading secrets"); + load_secrets(this, SECRETS_FILE, 0, prompt); + } + if (msg->reread.flags & REREAD_CACERTS) + { + DBG1(DBG_CFG, "rereading ca certificates from '%s'", + CA_CERTIFICATE_DIR); + load_certdir(this, CA_CERTIFICATE_DIR, CERT_X509, X509_CA); + } + if (msg->reread.flags & REREAD_OCSPCERTS) + { + DBG1(DBG_CFG, "rereading ocsp signer certificates from '%s'", + OCSP_CERTIFICATE_DIR); + load_certdir(this, OCSP_CERTIFICATE_DIR, CERT_X509, + X509_OCSP_SIGNER); + } + if (msg->reread.flags & REREAD_AACERTS) + { + DBG1(DBG_CFG, "rereading aa certificates from '%s'", + AA_CERTIFICATE_DIR); + load_certdir(this, AA_CERTIFICATE_DIR, CERT_X509, X509_AA); + } + if (msg->reread.flags & REREAD_ACERTS) + { + DBG1(DBG_CFG, "rereading attribute certificates from '%s'", + ATTR_CERTIFICATE_DIR); + load_certdir(this, ATTR_CERTIFICATE_DIR, CERT_X509_AC, 0); + } + if (msg->reread.flags & REREAD_CRLS) + { + DBG1(DBG_CFG, "rereading crls from '%s'", + CRL_DIR); + load_certdir(this, CRL_DIR, CERT_X509_CRL, 0); + } +} + +/** + * Implementation of stroke_cred_t.destroy + */ +static void destroy(private_stroke_cred_t *this) +{ + this->certs->destroy_offset(this->certs, offsetof(certificate_t, destroy)); + this->shared->destroy_offset(this->shared, offsetof(shared_key_t, destroy)); + this->private->destroy_offset(this->private, offsetof(private_key_t, destroy)); + this->lock->destroy(this->lock); + free(this); +} + +/* + * see header file + */ +stroke_cred_t *stroke_cred_create() +{ + private_stroke_cred_t *this = malloc_thing(private_stroke_cred_t); + + this->public.set.create_private_enumerator = (void*)create_private_enumerator; + this->public.set.create_cert_enumerator = (void*)create_cert_enumerator; + this->public.set.create_shared_enumerator = (void*)create_shared_enumerator; + this->public.set.create_cdp_enumerator = (void*)return_null; + this->public.set.cache_cert = (void*)cache_cert; + this->public.reread = (void(*)(stroke_cred_t*, stroke_msg_t *msg, FILE*))reread; + this->public.load_ca = (certificate_t*(*)(stroke_cred_t*, char *filename))load_ca; + this->public.load_peer = (certificate_t*(*)(stroke_cred_t*, char *filename))load_peer; + this->public.cachecrl = (void(*)(stroke_cred_t*, bool enabled))cachecrl; + this->public.destroy = (void(*)(stroke_cred_t*))destroy; + + this->certs = linked_list_create(); + this->shared = linked_list_create(); + this->private = linked_list_create(); + this->lock = rwlock_create(RWLOCK_TYPE_DEFAULT); + + load_certs(this); + load_secrets(this, SECRETS_FILE, 0, NULL); + + this->cachecrl = FALSE; + + return &this->public; +} + diff --git a/src/libcharon/plugins/stroke/stroke_cred.h b/src/libcharon/plugins/stroke/stroke_cred.h new file mode 100644 index 000000000..ccee7d87c --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_cred.h @@ -0,0 +1,84 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup stroke_cred stroke_cred + * @{ @ingroup stroke + */ + +#ifndef STROKE_CRED_H_ +#define STROKE_CRED_H_ + +#include <stdio.h> + +#include <stroke_msg.h> +#include <credentials/credential_set.h> +#include <credentials/certificates/certificate.h> + +typedef struct stroke_cred_t stroke_cred_t; + +/** + * Stroke in-memory credential storage. + */ +struct stroke_cred_t { + + /** + * Implements credential_set_t + */ + credential_set_t set; + + /** + * Reread secrets from config files. + * + * @param msg stroke message + * @param prompt I/O channel to prompt for private key passhprase + */ + void (*reread)(stroke_cred_t *this, stroke_msg_t *msg, FILE *prompt); + + /** + * Load a CA certificate, and serve it through the credential_set. + * + * @param filename file to load CA cert from + * @return reference to loaded certificate, or NULL + */ + certificate_t* (*load_ca)(stroke_cred_t *this, char *filename); + + /** + * Load a peer certificate and serve it rhrough the credential_set. + * + * @param filename file to load peer cert from + * @return reference to loaded certificate, or NULL + */ + certificate_t* (*load_peer)(stroke_cred_t *this, char *filename); + + /** + * Enable/Disable CRL caching to disk. + * + * @param enabled TRUE to enable, FALSE to disable + */ + void (*cachecrl)(stroke_cred_t *this, bool enabled); + + /** + * Destroy a stroke_cred instance. + */ + void (*destroy)(stroke_cred_t *this); +}; + +/** + * Create a stroke_cred instance. + */ +stroke_cred_t *stroke_cred_create(); + +#endif /** STROKE_CRED_H_ @}*/ diff --git a/src/libcharon/plugins/stroke/stroke_list.c b/src/libcharon/plugins/stroke/stroke_list.c new file mode 100644 index 000000000..c2a98da33 --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_list.c @@ -0,0 +1,1230 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "stroke_list.h" + +#include <time.h> + +#include <daemon.h> +#include <utils/linked_list.h> +#include <credentials/certificates/x509.h> +#include <credentials/certificates/ac.h> +#include <credentials/certificates/crl.h> +#include <credentials/certificates/pgp_certificate.h> +#include <credentials/ietf_attributes/ietf_attributes.h> +#include <config/peer_cfg.h> + +/* warning intervals for list functions */ +#define CERT_WARNING_INTERVAL 30 /* days */ +#define CRL_WARNING_INTERVAL 7 /* days */ +#define AC_WARNING_INTERVAL 1 /* day */ + +typedef struct private_stroke_list_t private_stroke_list_t; + +/** + * private data of stroke_list + */ +struct private_stroke_list_t { + + /** + * public functions + */ + stroke_list_t public; + + /** + * timestamp of daemon start + */ + time_t uptime; + + /** + * strokes attribute provider + */ + stroke_attribute_t *attribute; +}; + +/** + * log an IKE_SA to out + */ +static void log_ike_sa(FILE *out, ike_sa_t *ike_sa, bool all) +{ + ike_sa_id_t *id = ike_sa->get_id(ike_sa); + time_t now = time_monotonic(NULL); + + fprintf(out, "%12s[%d]: %N", + ike_sa->get_name(ike_sa), ike_sa->get_unique_id(ike_sa), + ike_sa_state_names, ike_sa->get_state(ike_sa)); + + if (ike_sa->get_state(ike_sa) == IKE_ESTABLISHED) + { + time_t established; + + established = ike_sa->get_statistic(ike_sa, STAT_ESTABLISHED); + fprintf(out, " %V ago", &now, &established); + } + + fprintf(out, ", %H[%Y]...%H[%Y]\n", + ike_sa->get_my_host(ike_sa), ike_sa->get_my_id(ike_sa), + ike_sa->get_other_host(ike_sa), ike_sa->get_other_id(ike_sa)); + + if (all) + { + proposal_t *ike_proposal; + + ike_proposal = ike_sa->get_proposal(ike_sa); + + fprintf(out, "%12s[%d]: IKE SPIs: %.16llx_i%s %.16llx_r%s", + ike_sa->get_name(ike_sa), ike_sa->get_unique_id(ike_sa), + id->get_initiator_spi(id), id->is_initiator(id) ? "*" : "", + id->get_responder_spi(id), id->is_initiator(id) ? "" : "*"); + + + if (ike_sa->get_state(ike_sa) == IKE_ESTABLISHED) + { + time_t rekey, reauth; + peer_cfg_t *peer_cfg; + + rekey = ike_sa->get_statistic(ike_sa, STAT_REKEY); + reauth = ike_sa->get_statistic(ike_sa, STAT_REAUTH); + peer_cfg = ike_sa->get_peer_cfg(ike_sa); + + if (rekey) + { + fprintf(out, ", rekeying in %V", &rekey, &now); + } + if (reauth) + { + bool first = TRUE; + enumerator_t *enumerator; + auth_cfg_t *auth; + + fprintf(out, ", "); + enumerator = peer_cfg->create_auth_cfg_enumerator(peer_cfg, TRUE); + while (enumerator->enumerate(enumerator, &auth)) + { + if (!first) + { + fprintf(out, "+"); + } + first = FALSE; + fprintf(out, "%N", auth_class_names, + auth->get(auth, AUTH_RULE_AUTH_CLASS)); + } + enumerator->destroy(enumerator); + fprintf(out, " reauthentication in %V", &reauth, &now); + } + if (!rekey && !reauth) + { + fprintf(out, ", rekeying disabled"); + } + } + fprintf(out, "\n"); + + if (ike_proposal) + { + char buf[BUF_LEN]; + + snprintf(buf, BUF_LEN, "%P", ike_proposal); + fprintf(out, "%12s[%d]: IKE proposal: %s\n", + ike_sa->get_name(ike_sa), ike_sa->get_unique_id(ike_sa), + buf+4); + } + } +} + +/** + * log an CHILD_SA to out + */ +static void log_child_sa(FILE *out, child_sa_t *child_sa, bool all) +{ + time_t use_in, use_out, rekey, now; + u_int64_t bytes_in, bytes_out; + proposal_t *proposal; + child_cfg_t *config = child_sa->get_config(child_sa); + + + fprintf(out, "%12s{%d}: %N, %N%s", + child_sa->get_name(child_sa), child_sa->get_reqid(child_sa), + child_sa_state_names, child_sa->get_state(child_sa), + ipsec_mode_names, child_sa->get_mode(child_sa), + config->use_proxy_mode(config) ? "_PROXY" : ""); + + if (child_sa->get_state(child_sa) == CHILD_INSTALLED) + { + fprintf(out, ", %N%s SPIs: %.8x_i %.8x_o", + protocol_id_names, child_sa->get_protocol(child_sa), + child_sa->has_encap(child_sa) ? " in UDP" : "", + ntohl(child_sa->get_spi(child_sa, TRUE)), + ntohl(child_sa->get_spi(child_sa, FALSE))); + + if (child_sa->get_ipcomp(child_sa) != IPCOMP_NONE) + { + fprintf(out, ", IPCOMP CPIs: %.4x_i %.4x_o", + ntohs(child_sa->get_cpi(child_sa, TRUE)), + ntohs(child_sa->get_cpi(child_sa, FALSE))); + } + + if (all) + { + fprintf(out, "\n%12s{%d}: ", child_sa->get_name(child_sa), + child_sa->get_reqid(child_sa)); + + proposal = child_sa->get_proposal(child_sa); + if (proposal) + { + u_int16_t encr_alg = ENCR_UNDEFINED, int_alg = AUTH_UNDEFINED; + u_int16_t encr_size = 0, int_size = 0; + + proposal->get_algorithm(proposal, ENCRYPTION_ALGORITHM, + &encr_alg, &encr_size); + proposal->get_algorithm(proposal, INTEGRITY_ALGORITHM, + &int_alg, &int_size); + + if (encr_alg != ENCR_UNDEFINED) + { + fprintf(out, "%N", encryption_algorithm_names, encr_alg); + if (encr_size) + { + fprintf(out, "_%u", encr_size); + } + } + if (int_alg != AUTH_UNDEFINED) + { + fprintf(out, "/%N", integrity_algorithm_names, int_alg); + if (int_size) + { + fprintf(out, "_%u", int_size); + } + } + } + + now = time_monotonic(NULL); + child_sa->get_usestats(child_sa, TRUE, &use_in, &bytes_in); + fprintf(out, ", %llu bytes_i", bytes_in); + if (use_in) + { + fprintf(out, " (%ds ago)", now - use_in); + } + + child_sa->get_usestats(child_sa, FALSE, &use_out, &bytes_out); + fprintf(out, ", %llu bytes_o", bytes_out); + if (use_out) + { + fprintf(out, " (%ds ago)", now - use_out); + } + fprintf(out, ", rekeying "); + + rekey = child_sa->get_lifetime(child_sa, FALSE); + if (rekey) + { + if (now > rekey) + { + fprintf(out, "active"); + } + else + { + fprintf(out, "in %V", &now, &rekey); + } + } + else + { + fprintf(out, "disabled"); + } + + } + } + + fprintf(out, "\n%12s{%d}: %#R=== %#R\n", + child_sa->get_name(child_sa), child_sa->get_reqid(child_sa), + child_sa->get_traffic_selectors(child_sa, TRUE), + child_sa->get_traffic_selectors(child_sa, FALSE)); +} + +/** + * Log a configs local or remote authentication config to out + */ +static void log_auth_cfgs(FILE *out, peer_cfg_t *peer_cfg, bool local) +{ + enumerator_t *enumerator, *rules; + auth_rule_t rule; + auth_cfg_t *auth; + auth_class_t auth_class; + identification_t *id; + certificate_t *cert; + cert_validation_t valid; + char *name; + + name = peer_cfg->get_name(peer_cfg); + + enumerator = peer_cfg->create_auth_cfg_enumerator(peer_cfg, local); + while (enumerator->enumerate(enumerator, &auth)) + { + fprintf(out, "%12s: %s [%Y] uses ", name, local ? "local: " : "remote:", + auth->get(auth, AUTH_RULE_IDENTITY)); + + auth_class = (uintptr_t)auth->get(auth, AUTH_RULE_AUTH_CLASS); + if (auth_class != AUTH_CLASS_EAP) + { + fprintf(out, "%N authentication\n", auth_class_names, auth_class); + } + else + { + if ((uintptr_t)auth->get(auth, AUTH_RULE_EAP_TYPE) == EAP_NAK) + { + fprintf(out, "EAP authentication"); + } + else + { + if ((uintptr_t)auth->get(auth, AUTH_RULE_EAP_VENDOR)) + { + fprintf(out, "EAP_%d-%d authentication", + (uintptr_t)auth->get(auth, AUTH_RULE_EAP_TYPE), + (uintptr_t)auth->get(auth, AUTH_RULE_EAP_VENDOR)); + } + else + { + fprintf(out, "%N authentication", eap_type_names, + (uintptr_t)auth->get(auth, AUTH_RULE_EAP_TYPE)); + } + } + id = auth->get(auth, AUTH_RULE_EAP_IDENTITY); + if (id) + { + fprintf(out, " with EAP identity '%Y'", id); + } + fprintf(out, "\n"); + } + + cert = auth->get(auth, AUTH_RULE_CA_CERT); + if (cert) + { + fprintf(out, "%12s: ca: \"%Y\"\n", name, cert->get_subject(cert)); + } + + cert = auth->get(auth, AUTH_RULE_IM_CERT); + if (cert) + { + fprintf(out, "%12s: im-ca: \"%Y\"\n", name, cert->get_subject(cert)); + } + + cert = auth->get(auth, AUTH_RULE_SUBJECT_CERT); + if (cert) + { + fprintf(out, "%12s: cert: \"%Y\"\n", name, + cert->get_subject(cert)); + } + + valid = (uintptr_t)auth->get(auth, AUTH_RULE_OCSP_VALIDATION); + if (valid != VALIDATION_FAILED) + { + fprintf(out, "%12s: ocsp: status must be GOOD%s\n", name, + (valid == VALIDATION_SKIPPED) ? " or SKIPPED" : ""); + } + + valid = (uintptr_t)auth->get(auth, AUTH_RULE_CRL_VALIDATION); + if (valid != VALIDATION_FAILED) + { + fprintf(out, "%12s: crl: status must be GOOD%s\n", name, + (valid == VALIDATION_SKIPPED) ? " or SKIPPED" : ""); + } + + rules = auth->create_enumerator(auth); + while (rules->enumerate(rules, &rule, &id)) + { + if (rule == AUTH_RULE_AC_GROUP) + { + fprintf(out, "%12s: group: %Y\n", name, id); + } + } + rules->destroy(rules); + } + enumerator->destroy(enumerator); +} + +/** + * Implementation of stroke_list_t.status. + */ +static void status(private_stroke_list_t *this, stroke_msg_t *msg, FILE *out, bool all) +{ + enumerator_t *enumerator, *children; + ike_cfg_t *ike_cfg; + child_cfg_t *child_cfg; + child_sa_t *child_sa; + ike_sa_t *ike_sa; + bool first, found = FALSE; + char *name = msg->status.name; + + if (all) + { + peer_cfg_t *peer_cfg; + char *plugin, *pool; + host_t *host; + u_int32_t dpd; + time_t since, now; + u_int size, online, offline; + + now = time_monotonic(NULL); + since = time(NULL) - (now - this->uptime); + + fprintf(out, "Status of IKEv2 charon daemon (strongSwan "VERSION"):\n"); + fprintf(out, " uptime: %V, since %T\n", &now, &this->uptime, &since, FALSE); + fprintf(out, " worker threads: %d idle of %d,", + charon->processor->get_idle_threads(charon->processor), + charon->processor->get_total_threads(charon->processor)); + fprintf(out, " job queue load: %d,", + charon->processor->get_job_load(charon->processor)); + fprintf(out, " scheduled events: %d\n", + charon->scheduler->get_job_load(charon->scheduler)); + fprintf(out, " loaded plugins: "); + enumerator = lib->plugins->create_plugin_enumerator(lib->plugins); + while (enumerator->enumerate(enumerator, &plugin)) + { + fprintf(out, "%s ", plugin); + } + enumerator->destroy(enumerator); + fprintf(out, "\n"); + + first = TRUE; + enumerator = this->attribute->create_pool_enumerator(this->attribute); + while (enumerator->enumerate(enumerator, &pool, &size, &online, &offline)) + { + if (name && !streq(name, pool)) + { + continue; + } + if (first) + { + first = FALSE; + fprintf(out, "Virtual IP pools (size/online/offline):\n"); + } + fprintf(out, " %s: %u/%u/%u\n", pool, size, online, offline); + } + enumerator->destroy(enumerator); + + enumerator = charon->kernel_interface->create_address_enumerator( + charon->kernel_interface, FALSE, FALSE); + fprintf(out, "Listening IP addresses:\n"); + while (enumerator->enumerate(enumerator, (void**)&host)) + { + fprintf(out, " %H\n", host); + } + enumerator->destroy(enumerator); + + fprintf(out, "Connections:\n"); + enumerator = charon->backends->create_peer_cfg_enumerator( + charon->backends, NULL, NULL, NULL, NULL); + while (enumerator->enumerate(enumerator, &peer_cfg)) + { + if (peer_cfg->get_ike_version(peer_cfg) != 2 || + (name && !streq(name, peer_cfg->get_name(peer_cfg)))) + { + continue; + } + + ike_cfg = peer_cfg->get_ike_cfg(peer_cfg); + fprintf(out, "%12s: %s...%s", peer_cfg->get_name(peer_cfg), + ike_cfg->get_my_addr(ike_cfg), ike_cfg->get_other_addr(ike_cfg)); + + dpd = peer_cfg->get_dpd(peer_cfg); + if (dpd) + { + fprintf(out, ", dpddelay=%us", dpd); + } + fprintf(out, "\n"); + + log_auth_cfgs(out, peer_cfg, TRUE); + log_auth_cfgs(out, peer_cfg, FALSE); + + children = peer_cfg->create_child_cfg_enumerator(peer_cfg); + while (children->enumerate(children, &child_cfg)) + { + linked_list_t *my_ts, *other_ts; + + my_ts = child_cfg->get_traffic_selectors(child_cfg, TRUE, NULL, NULL); + other_ts = child_cfg->get_traffic_selectors(child_cfg, FALSE, NULL, NULL); + fprintf(out, "%12s: child: %#R=== %#R", child_cfg->get_name(child_cfg), + my_ts, other_ts); + my_ts->destroy_offset(my_ts, offsetof(traffic_selector_t, destroy)); + other_ts->destroy_offset(other_ts, offsetof(traffic_selector_t, destroy)); + + if (dpd) + { + fprintf(out, ", dpdaction=%N", action_names, + child_cfg->get_dpd_action(child_cfg)); + } + fprintf(out, "\n"); + } + children->destroy(children); + } + enumerator->destroy(enumerator); + } + + first = TRUE; + enumerator = charon->traps->create_enumerator(charon->traps); + while (enumerator->enumerate(enumerator, NULL, &child_sa)) + { + if (first) + { + fprintf(out, "Routed Connections:\n"); + first = FALSE; + } + log_child_sa(out, child_sa, all); + } + enumerator->destroy(enumerator); + + fprintf(out, "Security Associations:\n"); + enumerator = charon->controller->create_ike_sa_enumerator(charon->controller); + while (enumerator->enumerate(enumerator, &ike_sa)) + { + bool ike_printed = FALSE; + iterator_t *children = ike_sa->create_child_sa_iterator(ike_sa); + + if (name == NULL || streq(name, ike_sa->get_name(ike_sa))) + { + log_ike_sa(out, ike_sa, all); + found = TRUE; + ike_printed = TRUE; + } + + while (children->iterate(children, (void**)&child_sa)) + { + if (name == NULL || streq(name, child_sa->get_name(child_sa))) + { + if (!ike_printed) + { + log_ike_sa(out, ike_sa, all); + found = TRUE; + ike_printed = TRUE; + } + log_child_sa(out, child_sa, all); + } + } + children->destroy(children); + } + enumerator->destroy(enumerator); + + if (!found) + { + if (name) + { + fprintf(out, " no match\n"); + } + else + { + fprintf(out, " none\n"); + } + } +} + +/** + * create a unique certificate list without duplicates + * certicates having the same issuer are grouped together. + */ +static linked_list_t* create_unique_cert_list(certificate_type_t type) +{ + linked_list_t *list = linked_list_create(); + enumerator_t *enumerator = charon->credentials->create_cert_enumerator( + charon->credentials, type, KEY_ANY, + NULL, FALSE); + certificate_t *cert; + + while (enumerator->enumerate(enumerator, (void**)&cert)) + { + iterator_t *iterator = list->create_iterator(list, TRUE); + identification_t *issuer = cert->get_issuer(cert); + bool previous_same, same = FALSE, last = TRUE; + certificate_t *list_cert; + + while (iterator->iterate(iterator, (void**)&list_cert)) + { + /* exit if we have a duplicate? */ + if (list_cert->equals(list_cert, cert)) + { + last = FALSE; + break; + } + /* group certificates with same issuer */ + previous_same = same; + same = list_cert->has_issuer(list_cert, issuer); + if (previous_same && !same) + { + iterator->insert_before(iterator, (void *)cert->get_ref(cert)); + last = FALSE; + break; + } + } + iterator->destroy(iterator); + + if (last) + { + list->insert_last(list, (void *)cert->get_ref(cert)); + } + } + enumerator->destroy(enumerator); + return list; +} + +/** + * Print a single public key. + */ +static void list_public_key(public_key_t *public, FILE *out) +{ + private_key_t *private = NULL; + chunk_t keyid; + identification_t *id; + auth_cfg_t *auth; + + if (public->get_fingerprint(public, KEY_ID_PUBKEY_SHA1, &keyid)) + { + id = identification_create_from_encoding(ID_KEY_ID, keyid); + auth = auth_cfg_create(); + private = charon->credentials->get_private(charon->credentials, + public->get_type(public), id, auth); + auth->destroy(auth); + id->destroy(id); + } + + fprintf(out, " pubkey: %N %d bits%s\n", + key_type_names, public->get_type(public), + public->get_keysize(public) * 8, + private ? ", has private key" : ""); + if (public->get_fingerprint(public, KEY_ID_PUBKEY_INFO_SHA1, &keyid)) + { + fprintf(out, " keyid: %#B\n", &keyid); + } + if (public->get_fingerprint(public, KEY_ID_PUBKEY_SHA1, &keyid)) + { + fprintf(out, " subjkey: %#B\n", &keyid); + } + DESTROY_IF(private); +} + +/** + * list all raw public keys + */ +static void stroke_list_pubkeys(linked_list_t *list, bool utc, FILE *out) +{ + bool first = TRUE; + + enumerator_t *enumerator = list->create_enumerator(list); + certificate_t *cert; + + while (enumerator->enumerate(enumerator, (void**)&cert)) + { + public_key_t *public = cert->get_public_key(cert); + + if (public) + { + if (first) + { + fprintf(out, "\n"); + fprintf(out, "List of Raw Public Keys:\n"); + first = FALSE; + } + fprintf(out, "\n"); + + list_public_key(public, out); + public->destroy(public); + } + } + enumerator->destroy(enumerator); +} + +/** + * list OpenPGP certificates + */ +static void stroke_list_pgp(linked_list_t *list,bool utc, FILE *out) +{ + bool first = TRUE; + time_t now = time(NULL); + enumerator_t *enumerator = list->create_enumerator(list); + certificate_t *cert; + + while (enumerator->enumerate(enumerator, (void**)&cert)) + { + time_t created, until; + public_key_t *public; + pgp_certificate_t *pgp_cert = (pgp_certificate_t*)cert; + chunk_t fingerprint = pgp_cert->get_fingerprint(pgp_cert); + + if (first) + { + + fprintf(out, "\n"); + fprintf(out, "List of PGP End Entity Certificates:\n"); + first = FALSE; + } + fprintf(out, "\n"); + fprintf(out, " userid: '%Y'\n", cert->get_subject(cert)); + + fprintf(out, " digest: %#B\n", &fingerprint); + + /* list validity */ + cert->get_validity(cert, &now, &created, &until); + fprintf(out, " created: %T\n", &created, utc); + fprintf(out, " until: %T%s\n", &until, utc, + (until == TIME_32_BIT_SIGNED_MAX) ? " (expires never)":""); + + public = cert->get_public_key(cert); + if (public) + { + list_public_key(public, out); + public->destroy(public); + } + } + enumerator->destroy(enumerator); +} + +/** + * list all X.509 certificates matching the flags + */ +static void stroke_list_certs(linked_list_t *list, char *label, + x509_flag_t flags, bool utc, FILE *out) +{ + bool first = TRUE; + time_t now = time(NULL); + enumerator_t *enumerator; + certificate_t *cert; + x509_flag_t flag_mask; + + /* mask all auxiliary flags */ + flag_mask = ~(X509_SERVER_AUTH | X509_CLIENT_AUTH | + X509_SELF_SIGNED | X509_IP_ADDR_BLOCKS ); + + enumerator = list->create_enumerator(list); + while (enumerator->enumerate(enumerator, (void**)&cert)) + { + x509_t *x509 = (x509_t*)cert; + x509_flag_t x509_flags = x509->get_flags(x509) & flag_mask; + + /* list only if flag is set or flag == 0 */ + if ((x509_flags & flags) || (x509_flags == flags)) + { + enumerator_t *enumerator; + identification_t *altName; + bool first_altName = TRUE; + int pathlen; + chunk_t serial, authkey; + time_t notBefore, notAfter; + public_key_t *public; + + if (first) + { + fprintf(out, "\n"); + fprintf(out, "List of %s:\n", label); + first = FALSE; + } + fprintf(out, "\n"); + + /* list subjectAltNames */ + enumerator = x509->create_subjectAltName_enumerator(x509); + while (enumerator->enumerate(enumerator, (void**)&altName)) + { + if (first_altName) + { + fprintf(out, " altNames: "); + first_altName = FALSE; + } + else + { + fprintf(out, ", "); + } + fprintf(out, "%Y", altName); + } + if (!first_altName) + { + fprintf(out, "\n"); + } + enumerator->destroy(enumerator); + + fprintf(out, " subject: \"%Y\"\n", cert->get_subject(cert)); + fprintf(out, " issuer: \"%Y\"\n", cert->get_issuer(cert)); + serial = x509->get_serial(x509); + fprintf(out, " serial: %#B\n", &serial); + + /* list validity */ + cert->get_validity(cert, &now, ¬Before, ¬After); + fprintf(out, " validity: not before %T, ", ¬Before, utc); + if (now < notBefore) + { + fprintf(out, "not valid yet (valid in %V)\n", &now, ¬Before); + } + else + { + fprintf(out, "ok\n"); + } + fprintf(out, " not after %T, ", ¬After, utc); + if (now > notAfter) + { + fprintf(out, "expired (%V ago)\n", &now, ¬After); + } + else + { + fprintf(out, "ok"); + if (now > notAfter - CERT_WARNING_INTERVAL * 60 * 60 * 24) + { + fprintf(out, " (expires in %V)", &now, ¬After); + } + fprintf(out, " \n"); + } + + public = cert->get_public_key(cert); + if (public) + { + list_public_key(public, out); + public->destroy(public); + } + + /* list optional authorityKeyIdentifier */ + authkey = x509->get_authKeyIdentifier(x509); + if (authkey.ptr) + { + fprintf(out, " authkey: %#B\n", &authkey); + } + + /* list optional pathLenConstraint */ + pathlen = x509->get_pathLenConstraint(x509); + if (pathlen != X509_NO_PATH_LEN_CONSTRAINT) + { + fprintf(out, " pathlen: %d\n", pathlen); + } + + /* list optional ipAddrBlocks */ + if (x509->get_flags(x509) & X509_IP_ADDR_BLOCKS) + { + traffic_selector_t *ipAddrBlock; + bool first_ipAddrBlock = TRUE; + + fprintf(out, " addresses: "); + enumerator = x509->create_ipAddrBlock_enumerator(x509); + while (enumerator->enumerate(enumerator, &ipAddrBlock)) + { + if (first_ipAddrBlock) + { + first_ipAddrBlock = FALSE; + } + else + { + fprintf(out, ", "); + } + fprintf(out, "%R", ipAddrBlock); + } + enumerator->destroy(enumerator); + fprintf(out, "\n"); + } + } + } + enumerator->destroy(enumerator); +} + +/** + * list all X.509 attribute certificates + */ +static void stroke_list_acerts(linked_list_t *list, bool utc, FILE *out) +{ + bool first = TRUE; + time_t thisUpdate, nextUpdate, now = time(NULL); + enumerator_t *enumerator = list->create_enumerator(list); + certificate_t *cert; + + while (enumerator->enumerate(enumerator, (void**)&cert)) + { + ac_t *ac = (ac_t*)cert; + identification_t *id; + ietf_attributes_t *groups; + chunk_t chunk; + + if (first) + { + fprintf(out, "\n"); + fprintf(out, "List of X.509 Attribute Certificates:\n"); + first = FALSE; + } + fprintf(out, "\n"); + + id = cert->get_subject(cert); + if (id) + { + fprintf(out, " holder: \"%Y\"\n", id); + } + id = ac->get_holderIssuer(ac); + if (id) + { + fprintf(out, " hissuer: \"%Y\"\n", id); + } + chunk = ac->get_holderSerial(ac); + if (chunk.ptr) + { + fprintf(out, " hserial: %#B\n", &chunk); + } + groups = ac->get_groups(ac); + if (groups) + { + fprintf(out, " groups: %s\n", groups->get_string(groups)); + groups->destroy(groups); + } + fprintf(out, " issuer: \"%Y\"\n", cert->get_issuer(cert)); + chunk = ac->get_serial(ac); + fprintf(out, " serial: %#B\n", &chunk); + + /* list validity */ + cert->get_validity(cert, &now, &thisUpdate, &nextUpdate); + fprintf(out, " updates: this %T\n", &thisUpdate, utc); + fprintf(out, " next %T, ", &nextUpdate, utc); + if (now > nextUpdate) + { + fprintf(out, "expired (%V ago)\n", &now, &nextUpdate); + } + else + { + fprintf(out, "ok"); + if (now > nextUpdate - AC_WARNING_INTERVAL * 60 * 60 * 24) + { + fprintf(out, " (expires in %V)", &now, &nextUpdate); + } + fprintf(out, " \n"); + } + + /* list optional authorityKeyIdentifier */ + chunk = ac->get_authKeyIdentifier(ac); + if (chunk.ptr) + { + fprintf(out, " authkey: %#B\n", &chunk); + } + } + enumerator->destroy(enumerator); +} + +/** + * list all X.509 CRLs + */ +static void stroke_list_crls(linked_list_t *list, bool utc, FILE *out) +{ + bool first = TRUE; + time_t thisUpdate, nextUpdate, now = time(NULL); + enumerator_t *enumerator = list->create_enumerator(list); + certificate_t *cert; + + while (enumerator->enumerate(enumerator, (void**)&cert)) + { + crl_t *crl = (crl_t*)cert; + chunk_t chunk; + + if (first) + { + fprintf(out, "\n"); + fprintf(out, "List of X.509 CRLs:\n"); + first = FALSE; + } + fprintf(out, "\n"); + + fprintf(out, " issuer: \"%Y\"\n", cert->get_issuer(cert)); + + /* list optional crlNumber */ + chunk = crl->get_serial(crl); + if (chunk.ptr) + { + fprintf(out, " serial: %#B\n", &chunk); + } + + /* count the number of revoked certificates */ + { + int count = 0; + enumerator_t *enumerator = crl->create_enumerator(crl); + + while (enumerator->enumerate(enumerator, NULL, NULL, NULL)) + { + count++; + } + fprintf(out, " revoked: %d certificate%s\n", count, + (count == 1)? "" : "s"); + enumerator->destroy(enumerator); + } + + /* list validity */ + cert->get_validity(cert, &now, &thisUpdate, &nextUpdate); + fprintf(out, " updates: this %T\n", &thisUpdate, utc); + fprintf(out, " next %T, ", &nextUpdate, utc); + if (now > nextUpdate) + { + fprintf(out, "expired (%V ago)\n", &now, &nextUpdate); + } + else + { + fprintf(out, "ok"); + if (now > nextUpdate - CRL_WARNING_INTERVAL * 60 * 60 * 24) + { + fprintf(out, " (expires in %V)", &now, &nextUpdate); + } + fprintf(out, " \n"); + } + + /* list optional authorityKeyIdentifier */ + chunk = crl->get_authKeyIdentifier(crl); + if (chunk.ptr) + { + fprintf(out, " authkey: %#B\n", &chunk); + } + } + enumerator->destroy(enumerator); +} + +/** + * list all OCSP responses + */ +static void stroke_list_ocsp(linked_list_t* list, bool utc, FILE *out) +{ + bool first = TRUE; + enumerator_t *enumerator = list->create_enumerator(list); + certificate_t *cert; + + while (enumerator->enumerate(enumerator, (void**)&cert)) + { + if (first) + { + fprintf(out, "\n"); + fprintf(out, "List of OCSP responses:\n"); + fprintf(out, "\n"); + first = FALSE; + } + + fprintf(out, " signer: \"%Y\"\n", cert->get_issuer(cert)); + } + enumerator->destroy(enumerator); +} + +/** + * List of registered cryptographical algorithms + */ +static void list_algs(FILE *out) +{ + enumerator_t *enumerator; + encryption_algorithm_t encryption; + integrity_algorithm_t integrity; + hash_algorithm_t hash; + pseudo_random_function_t prf; + diffie_hellman_group_t group; + + fprintf(out, "\n"); + fprintf(out, "List of registered IKEv2 Algorithms:\n"); + fprintf(out, "\n encryption: "); + enumerator = lib->crypto->create_crypter_enumerator(lib->crypto); + while (enumerator->enumerate(enumerator, &encryption)) + { + fprintf(out, "%N ", encryption_algorithm_names, encryption); + } + enumerator->destroy(enumerator); + fprintf(out, "\n integrity: "); + enumerator = lib->crypto->create_signer_enumerator(lib->crypto); + while (enumerator->enumerate(enumerator, &integrity)) + { + fprintf(out, "%N ", integrity_algorithm_names, integrity); + } + enumerator->destroy(enumerator); + fprintf(out, "\n hasher: "); + enumerator = lib->crypto->create_hasher_enumerator(lib->crypto); + while (enumerator->enumerate(enumerator, &hash)) + { + fprintf(out, "%N ", hash_algorithm_names, hash); + } + enumerator->destroy(enumerator); + fprintf(out, "\n prf: "); + enumerator = lib->crypto->create_prf_enumerator(lib->crypto); + while (enumerator->enumerate(enumerator, &prf)) + { + fprintf(out, "%N ", pseudo_random_function_names, prf); + } + enumerator->destroy(enumerator); + fprintf(out, "\n dh-group: "); + enumerator = lib->crypto->create_dh_enumerator(lib->crypto); + while (enumerator->enumerate(enumerator, &group)) + { + fprintf(out, "%N ", diffie_hellman_group_names, group); + } + enumerator->destroy(enumerator); + fprintf(out, "\n"); +} + +/** + * Implementation of stroke_list_t.list. + */ +static void list(private_stroke_list_t *this, stroke_msg_t *msg, FILE *out) +{ + linked_list_t *cert_list = NULL; + + if (msg->list.flags & LIST_PUBKEYS) + { + linked_list_t *pubkey_list = create_unique_cert_list(CERT_TRUSTED_PUBKEY); + + stroke_list_pubkeys(pubkey_list, msg->list.utc, out); + pubkey_list->destroy_offset(pubkey_list, offsetof(certificate_t, destroy)); + } + if (msg->list.flags & LIST_CERTS) + { + linked_list_t *pgp_list = create_unique_cert_list(CERT_GPG); + + stroke_list_pgp(pgp_list, msg->list.utc, out); + pgp_list->destroy_offset(pgp_list, offsetof(certificate_t, destroy)); + } + if (msg->list.flags & (LIST_CERTS | LIST_CACERTS | LIST_OCSPCERTS | LIST_AACERTS)) + { + cert_list = create_unique_cert_list(CERT_X509); + } + if (msg->list.flags & LIST_CERTS) + { + stroke_list_certs(cert_list, "X.509 End Entity Certificates", + X509_NONE, msg->list.utc, out); + } + if (msg->list.flags & LIST_CACERTS) + { + stroke_list_certs(cert_list, "X.509 CA Certificates", + X509_CA, msg->list.utc, out); + } + if (msg->list.flags & LIST_OCSPCERTS) + { + stroke_list_certs(cert_list, "X.509 OCSP Signer Certificates", + X509_OCSP_SIGNER, msg->list.utc, out); + } + if (msg->list.flags & LIST_AACERTS) + { + stroke_list_certs(cert_list, "X.509 AA Certificates", + X509_AA, msg->list.utc, out); + } + DESTROY_OFFSET_IF(cert_list, offsetof(certificate_t, destroy)); + + if (msg->list.flags & LIST_ACERTS) + { + linked_list_t *ac_list = create_unique_cert_list(CERT_X509_AC); + + stroke_list_acerts(ac_list, msg->list.utc, out); + ac_list->destroy_offset(ac_list, offsetof(certificate_t, destroy)); + } + if (msg->list.flags & LIST_CRLS) + { + linked_list_t *crl_list = create_unique_cert_list(CERT_X509_CRL); + + stroke_list_crls(crl_list, msg->list.utc, out); + crl_list->destroy_offset(crl_list, offsetof(certificate_t, destroy)); + } + if (msg->list.flags & LIST_OCSP) + { + linked_list_t *ocsp_list = create_unique_cert_list(CERT_X509_OCSP_RESPONSE); + + stroke_list_ocsp(ocsp_list, msg->list.utc, out); + + ocsp_list->destroy_offset(ocsp_list, offsetof(certificate_t, destroy)); + } + if (msg->list.flags & LIST_ALGS) + { + list_algs(out); + } +} + +/** + * Print leases of a single pool + */ +static void pool_leases(private_stroke_list_t *this, FILE *out, char *pool, + host_t *address, u_int size, u_int online, u_int offline) +{ + enumerator_t *enumerator; + identification_t *id; + host_t *lease; + bool on; + int found = 0; + + fprintf(out, "Leases in pool '%s', usage: %lu/%lu, %lu online\n", + pool, online + offline, size, online); + enumerator = this->attribute->create_lease_enumerator(this->attribute, pool); + while (enumerator && enumerator->enumerate(enumerator, &id, &lease, &on)) + { + if (!address || address->ip_equals(address, lease)) + { + fprintf(out, " %15H %s '%Y'\n", + lease, on ? "online" : "offline", id); + found++; + } + } + enumerator->destroy(enumerator); + if (!found) + { + fprintf(out, " no matching leases found\n"); + } +} + +/** + * Implementation of stroke_list_t.leases + */ +static void leases(private_stroke_list_t *this, stroke_msg_t *msg, FILE *out) +{ + enumerator_t *enumerator; + u_int size, offline, online; + host_t *address = NULL; + char *pool; + int found = 0; + + if (msg->leases.address) + { + address = host_create_from_string(msg->leases.address, 0); + } + + enumerator = this->attribute->create_pool_enumerator(this->attribute); + while (enumerator->enumerate(enumerator, &pool, &size, &online, &offline)) + { + if (!msg->leases.pool || streq(msg->leases.pool, pool)) + { + pool_leases(this, out, pool, address, size, online, offline); + found++; + } + } + enumerator->destroy(enumerator); + if (!found) + { + if (msg->leases.pool) + { + fprintf(out, "pool '%s' not found\n", msg->leases.pool); + } + else + { + fprintf(out, "no pools found\n"); + } + } + DESTROY_IF(address); +} + +/** + * Implementation of stroke_list_t.destroy + */ +static void destroy(private_stroke_list_t *this) +{ + free(this); +} + +/* + * see header file + */ +stroke_list_t *stroke_list_create(stroke_attribute_t *attribute) +{ + private_stroke_list_t *this = malloc_thing(private_stroke_list_t); + + this->public.list = (void(*)(stroke_list_t*, stroke_msg_t *msg, FILE *out))list; + this->public.status = (void(*)(stroke_list_t*, stroke_msg_t *msg, FILE *out,bool))status; + this->public.leases = (void(*)(stroke_list_t*, stroke_msg_t *msg, FILE *out))leases; + this->public.destroy = (void(*)(stroke_list_t*))destroy; + + this->uptime = time_monotonic(NULL); + this->attribute = attribute; + + return &this->public; +} + diff --git a/src/libcharon/plugins/stroke/stroke_list.h b/src/libcharon/plugins/stroke/stroke_list.h new file mode 100644 index 000000000..b5bedc6c2 --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_list.h @@ -0,0 +1,74 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup stroke_list stroke_list + * @{ @ingroup stroke + */ + +#ifndef STROKE_LIST_H_ +#define STROKE_LIST_H_ + +#include "stroke_attribute.h" + +#include <stroke_msg.h> +#include <library.h> + +typedef struct stroke_list_t stroke_list_t; + +/** + * Log status information to stroke console + */ +struct stroke_list_t { + + /** + * List certificate information to stroke console. + * + * @param msg stroke message + * @param out stroke console stream + */ + void (*list)(stroke_list_t *this, stroke_msg_t *msg, FILE *out); + + /** + * Log status information to stroke console. + * + * @param msg stroke message + * @param out stroke console stream + * @param all TRUE for "statusall" + */ + void (*status)(stroke_list_t *this, stroke_msg_t *msg, FILE *out, bool all); + + /** + * Log pool leases to stroke console. + * + * @param msg stroke message + * @param out stroke console stream + */ + void (*leases)(stroke_list_t *this, stroke_msg_t *msg, FILE *out); + + /** + * Destroy a stroke_list instance. + */ + void (*destroy)(stroke_list_t *this); +}; + +/** + * Create a stroke_list instance. + * + * @param attribute strokes attribute provider + */ +stroke_list_t *stroke_list_create(stroke_attribute_t *attribute); + +#endif /** STROKE_LIST_H_ @}*/ diff --git a/src/libcharon/plugins/stroke/stroke_plugin.c b/src/libcharon/plugins/stroke/stroke_plugin.c new file mode 100644 index 000000000..4361e5050 --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_plugin.c @@ -0,0 +1,65 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "stroke_plugin.h" + +#include <library.h> +#include "stroke_socket.h" + +typedef struct private_stroke_plugin_t private_stroke_plugin_t; + +/** + * private data of stroke_plugin + */ +struct private_stroke_plugin_t { + + /** + * public functions + */ + stroke_plugin_t public; + + /** + * stroke socket, receives strokes + */ + stroke_socket_t *socket; +}; + +/** + * Implementation of stroke_plugin_t.destroy + */ +static void destroy(private_stroke_plugin_t *this) +{ + this->socket->destroy(this->socket); + free(this); +} + +/* + * see header file + */ +plugin_t *stroke_plugin_create() +{ + private_stroke_plugin_t *this = malloc_thing(private_stroke_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + this->socket = stroke_socket_create(); + if (this->socket == NULL) + { + free(this); + return NULL; + } + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/stroke/stroke_plugin.h b/src/libcharon/plugins/stroke/stroke_plugin.h new file mode 100644 index 000000000..464979910 --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_plugin.h @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup stroke stroke + * @ingroup cplugins + * + * @defgroup stroke_plugin stroke_plugin + * @{ @ingroup stroke + */ + +#ifndef STROKE_PLUGIN_H_ +#define STROKE_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct stroke_plugin_t stroke_plugin_t; + +/** + * strongSwan 2.x style configuration and control interface. + * + * Stroke is a home-brewed communication interface inspired by whack. It + * uses a unix socket (/var/run/charon.ctl). + */ +struct stroke_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** STROKE_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/stroke/stroke_shared_key.c b/src/libcharon/plugins/stroke/stroke_shared_key.c new file mode 100644 index 000000000..4f716e83a --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_shared_key.c @@ -0,0 +1,140 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "stroke_shared_key.h" + +#include <utils/linked_list.h> + +typedef struct private_stroke_shared_key_t private_stroke_shared_key_t; + +/** + * private data of shared_key + */ +struct private_stroke_shared_key_t { + + /** + * implements shared_key_t + */ + stroke_shared_key_t public; + + /** + * type of this key + */ + shared_key_type_t type; + + /** + * data of the key + */ + chunk_t key; + + /** + * list of key owners, as identification_t + */ + linked_list_t *owners; + + /** + * reference counter + */ + refcount_t ref; +}; + +/** + * Implementation of shared_key_t.get_type. + */ +static shared_key_type_t get_type(private_stroke_shared_key_t *this) +{ + return this->type; +} + +/** + * Implementation of shared_key_t.get_ref. + */ +static private_stroke_shared_key_t* get_ref(private_stroke_shared_key_t *this) +{ + ref_get(&this->ref); + return this; +} + +/** + * Implementation of shared_key_t.get_key. + */ +static chunk_t get_key(private_stroke_shared_key_t *this) +{ + return this->key; +} + +/** + * Implementation of stroke_shared_key_t.has_owner. + */ +static id_match_t has_owner(private_stroke_shared_key_t *this, identification_t *owner) +{ + enumerator_t *enumerator; + id_match_t match, best = ID_MATCH_NONE; + identification_t *current; + + enumerator = this->owners->create_enumerator(this->owners); + while (enumerator->enumerate(enumerator, ¤t)) + { + match = owner->matches(owner, current); + if (match > best) + { + best = match; + } + } + enumerator->destroy(enumerator); + return best; +} +/** + * Implementation of stroke_shared_key_t.add_owner. + */ +static void add_owner(private_stroke_shared_key_t *this, identification_t *owner) +{ + this->owners->insert_last(this->owners, owner); +} + +/** + * Implementation of stroke_shared_key_t.destroy + */ +static void destroy(private_stroke_shared_key_t *this) +{ + if (ref_put(&this->ref)) + { + this->owners->destroy_offset(this->owners, offsetof(identification_t, destroy)); + chunk_free(&this->key); + free(this); + } +} + +/** + * create a shared key + */ +stroke_shared_key_t *stroke_shared_key_create(shared_key_type_t type, chunk_t key) +{ + private_stroke_shared_key_t *this = malloc_thing(private_stroke_shared_key_t); + + this->public.shared.get_type = (shared_key_type_t(*)(shared_key_t*))get_type; + this->public.shared.get_key = (chunk_t(*)(shared_key_t*))get_key; + this->public.shared.get_ref = (shared_key_t*(*)(shared_key_t*))get_ref; + this->public.shared.destroy = (void(*)(shared_key_t*))destroy; + this->public.add_owner = (void(*)(stroke_shared_key_t*, identification_t *owner))add_owner; + this->public.has_owner = (id_match_t(*)(stroke_shared_key_t*, identification_t *owner))has_owner; + + this->owners = linked_list_create(); + this->type = type; + this->key = key; + this->ref = 1; + + return &this->public; +} diff --git a/src/libcharon/plugins/stroke/stroke_shared_key.h b/src/libcharon/plugins/stroke/stroke_shared_key.h new file mode 100644 index 000000000..05ad55083 --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_shared_key.h @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup stroke_shared_key stroke_shared_key + * @{ @ingroup stroke + */ + +#ifndef STROKE_SHARED_KEY_H_ +#define STROKE_SHARED_KEY_H_ + +#include <utils/identification.h> +#include <credentials/keys/shared_key.h> + +typedef struct stroke_shared_key_t stroke_shared_key_t; + +/** + * Shared key implementation for keys read from ipsec.secrets + */ +struct stroke_shared_key_t { + + /** + * Implements the shared_key_t interface. + */ + shared_key_t shared; + + /** + * Add an owner to the key. + * + * @param owner owner to add + */ + void (*add_owner)(stroke_shared_key_t *this, identification_t *owner); + + /** + * Check if a key has a specific owner. + * + * @param owner owner to check + * @return best match found + */ + id_match_t (*has_owner)(stroke_shared_key_t *this, identification_t *owner); +}; + +/** + * Create a stroke_shared_key instance. + */ +stroke_shared_key_t *stroke_shared_key_create(shared_key_type_t type, chunk_t key); + +#endif /** STROKE_SHARED_KEY_H_ @}*/ diff --git a/src/libcharon/plugins/stroke/stroke_socket.c b/src/libcharon/plugins/stroke/stroke_socket.c new file mode 100644 index 000000000..56c18da38 --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_socket.c @@ -0,0 +1,671 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "stroke_socket.h" + +#include <stdlib.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/socket.h> +#include <sys/un.h> +#include <sys/fcntl.h> +#include <unistd.h> +#include <errno.h> + +#include <processing/jobs/callback_job.h> +#include <hydra.h> +#include <daemon.h> +#include <threading/thread.h> + +#include "stroke_config.h" +#include "stroke_control.h" +#include "stroke_cred.h" +#include "stroke_ca.h" +#include "stroke_attribute.h" +#include "stroke_list.h" + +typedef struct stroke_job_context_t stroke_job_context_t; +typedef struct private_stroke_socket_t private_stroke_socket_t; + +/** + * private data of stroke_socket + */ +struct private_stroke_socket_t { + + /** + * public functions + */ + stroke_socket_t public; + + /** + * Unix socket to listen for strokes + */ + int socket; + + /** + * job accepting stroke messages + */ + callback_job_t *job; + + /** + * configuration backend + */ + stroke_config_t *config; + + /** + * attribute provider + */ + stroke_attribute_t *attribute; + + /** + * controller to control daemon + */ + stroke_control_t *control; + + /** + * credential set + */ + stroke_cred_t *cred; + + /** + * CA sections + */ + stroke_ca_t *ca; + + /** + * Status information logging + */ + stroke_list_t *list; +}; + +/** + * job context to pass to processing thread + */ +struct stroke_job_context_t { + + /** + * file descriptor to read from + */ + int fd; + + /** + * global stroke interface + */ + private_stroke_socket_t *this; +}; + +/** + * Helper function which corrects the string pointers + * in a stroke_msg_t. Strings in a stroke_msg sent over "wire" + * contains RELATIVE addresses (relative to the beginning of the + * stroke_msg). They must be corrected if they reach our address + * space... + */ +static void pop_string(stroke_msg_t *msg, char **string) +{ + if (*string == NULL) + { + return; + } + + /* check for sanity of string pointer and string */ + if (string < (char**)msg || + string > (char**)msg + sizeof(stroke_msg_t) || + (unsigned long)*string < (unsigned long)((char*)msg->buffer - (char*)msg) || + (unsigned long)*string > msg->length) + { + *string = "(invalid pointer in stroke msg)"; + } + else + { + *string = (char*)msg + (unsigned long)*string; + } +} + +/** + * Pop the strings of a stroke_end_t struct and log them for debugging purposes + */ +static void pop_end(stroke_msg_t *msg, const char* label, stroke_end_t *end) +{ + pop_string(msg, &end->address); + pop_string(msg, &end->subnets); + pop_string(msg, &end->sourceip); + pop_string(msg, &end->auth); + pop_string(msg, &end->auth2); + pop_string(msg, &end->id); + pop_string(msg, &end->id2); + pop_string(msg, &end->cert); + pop_string(msg, &end->cert2); + pop_string(msg, &end->ca); + pop_string(msg, &end->ca2); + pop_string(msg, &end->groups); + pop_string(msg, &end->updown); + + DBG2(DBG_CFG, " %s=%s", label, end->address); + DBG2(DBG_CFG, " %ssubnet=%s", label, end->subnets); + DBG2(DBG_CFG, " %ssourceip=%s", label, end->sourceip); + DBG2(DBG_CFG, " %sauth=%s", label, end->auth); + DBG2(DBG_CFG, " %sauth2=%s", label, end->auth2); + DBG2(DBG_CFG, " %sid=%s", label, end->id); + DBG2(DBG_CFG, " %sid2=%s", label, end->id2); + DBG2(DBG_CFG, " %scert=%s", label, end->cert); + DBG2(DBG_CFG, " %scert2=%s", label, end->cert2); + DBG2(DBG_CFG, " %sca=%s", label, end->ca); + DBG2(DBG_CFG, " %sca2=%s", label, end->ca2); + DBG2(DBG_CFG, " %sgroups=%s", label, end->groups); + DBG2(DBG_CFG, " %supdown=%s", label, end->updown); +} + +/** + * Add a connection to the configuration list + */ +static void stroke_add_conn(private_stroke_socket_t *this, stroke_msg_t *msg) +{ + pop_string(msg, &msg->add_conn.name); + DBG1(DBG_CFG, "received stroke: add connection '%s'", msg->add_conn.name); + + DBG2(DBG_CFG, "conn %s", msg->add_conn.name); + pop_end(msg, "left", &msg->add_conn.me); + pop_end(msg, "right", &msg->add_conn.other); + pop_string(msg, &msg->add_conn.eap_identity); + pop_string(msg, &msg->add_conn.algorithms.ike); + pop_string(msg, &msg->add_conn.algorithms.esp); + pop_string(msg, &msg->add_conn.ikeme.mediated_by); + pop_string(msg, &msg->add_conn.ikeme.peerid); + DBG2(DBG_CFG, " eap_identity=%s", msg->add_conn.eap_identity); + DBG2(DBG_CFG, " ike=%s", msg->add_conn.algorithms.ike); + DBG2(DBG_CFG, " esp=%s", msg->add_conn.algorithms.esp); + DBG2(DBG_CFG, " mediation=%s", msg->add_conn.ikeme.mediation ? "yes" : "no"); + DBG2(DBG_CFG, " mediated_by=%s", msg->add_conn.ikeme.mediated_by); + DBG2(DBG_CFG, " me_peerid=%s", msg->add_conn.ikeme.peerid); + + this->config->add(this->config, msg); + this->attribute->add_pool(this->attribute, msg); +} + +/** + * Delete a connection from the list + */ +static void stroke_del_conn(private_stroke_socket_t *this, stroke_msg_t *msg) +{ + pop_string(msg, &msg->del_conn.name); + DBG1(DBG_CFG, "received stroke: delete connection '%s'", msg->del_conn.name); + + this->config->del(this->config, msg); + this->attribute->del_pool(this->attribute, msg); +} + +/** + * initiate a connection by name + */ +static void stroke_initiate(private_stroke_socket_t *this, stroke_msg_t *msg, FILE *out) +{ + pop_string(msg, &msg->initiate.name); + DBG1(DBG_CFG, "received stroke: initiate '%s'", msg->initiate.name); + + this->control->initiate(this->control, msg, out); +} + +/** + * terminate a connection by name + */ +static void stroke_terminate(private_stroke_socket_t *this, stroke_msg_t *msg, FILE *out) +{ + pop_string(msg, &msg->terminate.name); + DBG1(DBG_CFG, "received stroke: terminate '%s'", msg->terminate.name); + + this->control->terminate(this->control, msg, out); +} + +/** + * terminate a connection by peers virtual IP + */ +static void stroke_terminate_srcip(private_stroke_socket_t *this, + stroke_msg_t *msg, FILE *out) +{ + pop_string(msg, &msg->terminate_srcip.start); + pop_string(msg, &msg->terminate_srcip.end); + DBG1(DBG_CFG, "received stroke: terminate-srcip %s-%s", + msg->terminate_srcip.start, msg->terminate_srcip.end); + + this->control->terminate_srcip(this->control, msg, out); +} + +/** + * route a policy (install SPD entries) + */ +static void stroke_route(private_stroke_socket_t *this, stroke_msg_t *msg, FILE *out) +{ + pop_string(msg, &msg->route.name); + DBG1(DBG_CFG, "received stroke: route '%s'", msg->route.name); + + this->control->route(this->control, msg, out); +} + +/** + * unroute a policy + */ +static void stroke_unroute(private_stroke_socket_t *this, stroke_msg_t *msg, FILE *out) +{ + pop_string(msg, &msg->terminate.name); + DBG1(DBG_CFG, "received stroke: unroute '%s'", msg->route.name); + + this->control->unroute(this->control, msg, out); +} + +/** + * Add a ca information record to the cainfo list + */ +static void stroke_add_ca(private_stroke_socket_t *this, + stroke_msg_t *msg, FILE *out) +{ + pop_string(msg, &msg->add_ca.name); + DBG1(DBG_CFG, "received stroke: add ca '%s'", msg->add_ca.name); + + pop_string(msg, &msg->add_ca.cacert); + pop_string(msg, &msg->add_ca.crluri); + pop_string(msg, &msg->add_ca.crluri2); + pop_string(msg, &msg->add_ca.ocspuri); + pop_string(msg, &msg->add_ca.ocspuri2); + pop_string(msg, &msg->add_ca.certuribase); + DBG2(DBG_CFG, "ca %s", msg->add_ca.name); + DBG2(DBG_CFG, " cacert=%s", msg->add_ca.cacert); + DBG2(DBG_CFG, " crluri=%s", msg->add_ca.crluri); + DBG2(DBG_CFG, " crluri2=%s", msg->add_ca.crluri2); + DBG2(DBG_CFG, " ocspuri=%s", msg->add_ca.ocspuri); + DBG2(DBG_CFG, " ocspuri2=%s", msg->add_ca.ocspuri2); + DBG2(DBG_CFG, " certuribase=%s", msg->add_ca.certuribase); + + this->ca->add(this->ca, msg); +} + +/** + * Delete a ca information record from the cainfo list + */ +static void stroke_del_ca(private_stroke_socket_t *this, + stroke_msg_t *msg, FILE *out) +{ + pop_string(msg, &msg->del_ca.name); + DBG1(DBG_CFG, "received stroke: delete ca '%s'", msg->del_ca.name); + + this->ca->del(this->ca, msg); +} + + +/** + * show status of daemon + */ +static void stroke_status(private_stroke_socket_t *this, + stroke_msg_t *msg, FILE *out, bool all) +{ + pop_string(msg, &(msg->status.name)); + + this->list->status(this->list, msg, out, all); +} + +/** + * list various information + */ +static void stroke_list(private_stroke_socket_t *this, stroke_msg_t *msg, FILE *out) +{ + if (msg->list.flags & LIST_CAINFOS) + { + this->ca->list(this->ca, msg, out); + } + this->list->list(this->list, msg, out); +} + +/** + * reread various information + */ +static void stroke_reread(private_stroke_socket_t *this, + stroke_msg_t *msg, FILE *out) +{ + this->cred->reread(this->cred, msg, out); +} + +/** + * purge various information + */ +static void stroke_purge(private_stroke_socket_t *this, + stroke_msg_t *msg, FILE *out) +{ + if (msg->purge.flags & PURGE_OCSP) + { + charon->credentials->flush_cache(charon->credentials, + CERT_X509_OCSP_RESPONSE); + } + if (msg->purge.flags & PURGE_IKE) + { + this->control->purge_ike(this->control, msg, out); + } +} + +/** + * list pool leases + */ +static void stroke_leases(private_stroke_socket_t *this, + stroke_msg_t *msg, FILE *out) +{ + pop_string(msg, &msg->leases.pool); + pop_string(msg, &msg->leases.address); + + this->list->leases(this->list, msg, out); +} + +debug_t get_group_from_name(char *type) +{ + if (strcaseeq(type, "any")) return DBG_ANY; + else if (strcaseeq(type, "mgr")) return DBG_MGR; + else if (strcaseeq(type, "ike")) return DBG_IKE; + else if (strcaseeq(type, "chd")) return DBG_CHD; + else if (strcaseeq(type, "job")) return DBG_JOB; + else if (strcaseeq(type, "cfg")) return DBG_CFG; + else if (strcaseeq(type, "knl")) return DBG_KNL; + else if (strcaseeq(type, "net")) return DBG_NET; + else if (strcaseeq(type, "enc")) return DBG_ENC; + else if (strcaseeq(type, "lib")) return DBG_LIB; + else return -1; +} + +/** + * set the verbosity debug output + */ +static void stroke_loglevel(private_stroke_socket_t *this, + stroke_msg_t *msg, FILE *out) +{ + enumerator_t *enumerator; + sys_logger_t *sys_logger; + file_logger_t *file_logger; + debug_t group; + + pop_string(msg, &(msg->loglevel.type)); + DBG1(DBG_CFG, "received stroke: loglevel %d for %s", + msg->loglevel.level, msg->loglevel.type); + + group = get_group_from_name(msg->loglevel.type); + if (group < 0) + { + fprintf(out, "invalid type (%s)!\n", msg->loglevel.type); + return; + } + /* we set the loglevel on ALL sys- and file-loggers */ + enumerator = charon->sys_loggers->create_enumerator(charon->sys_loggers); + while (enumerator->enumerate(enumerator, &sys_logger)) + { + sys_logger->set_level(sys_logger, group, msg->loglevel.level); + } + enumerator->destroy(enumerator); + enumerator = charon->file_loggers->create_enumerator(charon->file_loggers); + while (enumerator->enumerate(enumerator, &file_logger)) + { + file_logger->set_level(file_logger, group, msg->loglevel.level); + } + enumerator->destroy(enumerator); +} + +/** + * set various config options + */ +static void stroke_config(private_stroke_socket_t *this, + stroke_msg_t *msg, FILE *out) +{ + this->cred->cachecrl(this->cred, msg->config.cachecrl); +} + +/** + * destroy a job context + */ +static void stroke_job_context_destroy(stroke_job_context_t *this) +{ + if (this->fd) + { + close(this->fd); + } + free(this); +} + +/** + * process a stroke request from the socket pointed by "fd" + */ +static job_requeue_t process(stroke_job_context_t *ctx) +{ + stroke_msg_t *msg; + u_int16_t msg_length; + ssize_t bytes_read; + FILE *out; + private_stroke_socket_t *this = ctx->this; + int strokefd = ctx->fd; + + /* peek the length */ + bytes_read = recv(strokefd, &msg_length, sizeof(msg_length), MSG_PEEK); + if (bytes_read != sizeof(msg_length)) + { + DBG1(DBG_CFG, "reading length of stroke message failed: %s", + strerror(errno)); + return JOB_REQUEUE_NONE; + } + + /* read message */ + msg = alloca(msg_length); + bytes_read = recv(strokefd, msg, msg_length, 0); + if (bytes_read != msg_length) + { + DBG1(DBG_CFG, "reading stroke message failed: %s", strerror(errno)); + return JOB_REQUEUE_NONE; + } + + out = fdopen(strokefd, "w+"); + if (out == NULL) + { + DBG1(DBG_CFG, "opening stroke output channel failed: %s", strerror(errno)); + return JOB_REQUEUE_NONE; + } + + DBG3(DBG_CFG, "stroke message %b", (void*)msg, msg_length); + + switch (msg->type) + { + case STR_INITIATE: + stroke_initiate(this, msg, out); + break; + case STR_ROUTE: + stroke_route(this, msg, out); + break; + case STR_UNROUTE: + stroke_unroute(this, msg, out); + break; + case STR_TERMINATE: + stroke_terminate(this, msg, out); + break; + case STR_TERMINATE_SRCIP: + stroke_terminate_srcip(this, msg, out); + break; + case STR_STATUS: + stroke_status(this, msg, out, FALSE); + break; + case STR_STATUS_ALL: + stroke_status(this, msg, out, TRUE); + break; + case STR_ADD_CONN: + stroke_add_conn(this, msg); + break; + case STR_DEL_CONN: + stroke_del_conn(this, msg); + break; + case STR_ADD_CA: + stroke_add_ca(this, msg, out); + break; + case STR_DEL_CA: + stroke_del_ca(this, msg, out); + break; + case STR_LOGLEVEL: + stroke_loglevel(this, msg, out); + break; + case STR_CONFIG: + stroke_config(this, msg, out); + break; + case STR_LIST: + stroke_list(this, msg, out); + break; + case STR_REREAD: + stroke_reread(this, msg, out); + break; + case STR_PURGE: + stroke_purge(this, msg, out); + break; + case STR_LEASES: + stroke_leases(this, msg, out); + break; + default: + DBG1(DBG_CFG, "received unknown stroke"); + break; + } + fclose(out); + /* fclose() closes underlying FD */ + ctx->fd = 0; + return JOB_REQUEUE_NONE; +} + +/** + * Implementation of private_stroke_socket_t.stroke_receive. + */ +static job_requeue_t receive(private_stroke_socket_t *this) +{ + struct sockaddr_un strokeaddr; + int strokeaddrlen = sizeof(strokeaddr); + int strokefd; + bool oldstate; + callback_job_t *job; + stroke_job_context_t *ctx; + + oldstate = thread_cancelability(TRUE); + strokefd = accept(this->socket, (struct sockaddr *)&strokeaddr, &strokeaddrlen); + thread_cancelability(oldstate); + + if (strokefd < 0) + { + DBG1(DBG_CFG, "accepting stroke connection failed: %s", strerror(errno)); + return JOB_REQUEUE_FAIR; + } + + ctx = malloc_thing(stroke_job_context_t); + ctx->fd = strokefd; + ctx->this = this; + job = callback_job_create((callback_job_cb_t)process, + ctx, (void*)stroke_job_context_destroy, this->job); + charon->processor->queue_job(charon->processor, (job_t*)job); + + return JOB_REQUEUE_FAIR; +} + + +/** + * initialize and open stroke socket + */ +static bool open_socket(private_stroke_socket_t *this) +{ + struct sockaddr_un socket_addr; + mode_t old; + + socket_addr.sun_family = AF_UNIX; + strcpy(socket_addr.sun_path, STROKE_SOCKET); + + /* set up unix socket */ + this->socket = socket(AF_UNIX, SOCK_STREAM, 0); + if (this->socket == -1) + { + DBG1(DBG_CFG, "could not create stroke socket"); + return FALSE; + } + + unlink(socket_addr.sun_path); + old = umask(~(S_IRWXU | S_IRWXG)); + if (bind(this->socket, (struct sockaddr *)&socket_addr, sizeof(socket_addr)) < 0) + { + DBG1(DBG_CFG, "could not bind stroke socket: %s", strerror(errno)); + close(this->socket); + return FALSE; + } + umask(old); + if (chown(socket_addr.sun_path, charon->uid, charon->gid) != 0) + { + DBG1(DBG_CFG, "changing stroke socket permissions failed: %s", + strerror(errno)); + } + + if (listen(this->socket, 10) < 0) + { + DBG1(DBG_CFG, "could not listen on stroke socket: %s", strerror(errno)); + close(this->socket); + unlink(socket_addr.sun_path); + return FALSE; + } + return TRUE; +} + +/** + * Implementation of stroke_socket_t.destroy + */ +static void destroy(private_stroke_socket_t *this) +{ + this->job->cancel(this->job); + charon->credentials->remove_set(charon->credentials, &this->ca->set); + charon->credentials->remove_set(charon->credentials, &this->cred->set); + charon->backends->remove_backend(charon->backends, &this->config->backend); + hydra->attributes->remove_provider(hydra->attributes, &this->attribute->provider); + this->cred->destroy(this->cred); + this->ca->destroy(this->ca); + this->config->destroy(this->config); + this->attribute->destroy(this->attribute); + this->control->destroy(this->control); + this->list->destroy(this->list); + free(this); +} + +/* + * see header file + */ +stroke_socket_t *stroke_socket_create() +{ + private_stroke_socket_t *this = malloc_thing(private_stroke_socket_t); + + this->public.destroy = (void(*)(stroke_socket_t*))destroy; + + if (!open_socket(this)) + { + free(this); + return NULL; + } + + this->cred = stroke_cred_create(); + this->attribute = stroke_attribute_create(); + this->ca = stroke_ca_create(this->cred); + this->config = stroke_config_create(this->ca, this->cred); + this->control = stroke_control_create(); + this->list = stroke_list_create(this->attribute); + + charon->credentials->add_set(charon->credentials, &this->ca->set); + charon->credentials->add_set(charon->credentials, &this->cred->set); + charon->backends->add_backend(charon->backends, &this->config->backend); + hydra->attributes->add_provider(hydra->attributes, &this->attribute->provider); + + this->job = callback_job_create((callback_job_cb_t)receive, + this, NULL, NULL); + charon->processor->queue_job(charon->processor, (job_t*)this->job); + + return &this->public; +} + diff --git a/src/libcharon/plugins/stroke/stroke_socket.h b/src/libcharon/plugins/stroke/stroke_socket.h new file mode 100644 index 000000000..2aac8be9b --- /dev/null +++ b/src/libcharon/plugins/stroke/stroke_socket.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup stroke_socket stroke_socket + * @{ @ingroup stroke + */ + +#ifndef STROKE_SOCKET_H_ +#define STROKE_SOCKET_H_ + +typedef struct stroke_socket_t stroke_socket_t; + +/** + * Stroke socket, opens UNIX communication socket, reads and dispatches. + */ +struct stroke_socket_t { + + /** + * Destroy a stroke_socket instance. + */ + void (*destroy)(stroke_socket_t *this); +}; + +/** + * Create a stroke_socket instance. + */ +stroke_socket_t *stroke_socket_create(); + +#endif /** STROKE_SOCKET_H_ @}*/ diff --git a/src/libcharon/plugins/uci/Makefile.am b/src/libcharon/plugins/uci/Makefile.am new file mode 100644 index 000000000..6decdb9da --- /dev/null +++ b/src/libcharon/plugins/uci/Makefile.am @@ -0,0 +1,19 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-uci.la +else 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the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src/libcharon/plugins/uci +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/config/libtool.m4 \ + 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--git a/src/libcharon/plugins/uci/uci_config.c b/src/libcharon/plugins/uci/uci_config.c new file mode 100644 index 000000000..bd58afbf0 --- /dev/null +++ b/src/libcharon/plugins/uci/uci_config.c @@ -0,0 +1,361 @@ +/* + * Copyright (C) 2008 Thomas Kallenberg + * Copyright (C) 2008 Tobias Brunner + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#define _GNU_SOURCE +#include <string.h> + +#include "uci_config.h" +#include "uci_parser.h" + +#include <daemon.h> + +typedef struct private_uci_config_t private_uci_config_t; + +/** + * Private data of an uci_config_t object + */ +struct private_uci_config_t { + + /** + * Public part + */ + uci_config_t public; + + /** + * UCI parser context + */ + uci_parser_t *parser; +}; + +/** + * enumerator implementation for create_peer_cfg_enumerator + */ +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** currently enumerated peer config */ + peer_cfg_t *peer_cfg; + /** inner uci_parser section enumerator */ + enumerator_t *inner; +} peer_enumerator_t; + +/** + * create a proposal from a string, with fallback to default + */ +static proposal_t *create_proposal(char *string, protocol_id_t proto) +{ + proposal_t *proposal = NULL; + + if (string) + { + proposal = proposal_create_from_string(proto, string); + } + if (!proposal) + { /* UCI default is aes/sha1 only */ + if (proto == PROTO_IKE) + { + proposal = proposal_create_from_string(proto, + "aes128-aes192-aes256-sha1-modp1536-modp2048"); + } + else + { + proposal = proposal_create_from_string(proto, + "aes128-aes192-aes256-sha1"); + } + } + return proposal; +} + +/** + * create an traffic selector, fallback to dynamic + */ +static traffic_selector_t *create_ts(char *string) +{ + if (string) + { + int netbits = 32; + host_t *net; + char *pos; + + string = strdupa(string); + pos = strchr(string, '/'); + if (pos) + { + *pos++ = '\0'; + netbits = atoi(pos); + } + else + { + if (strchr(string, ':')) + { + netbits = 128; + } + } + net = host_create_from_string(string, 0); + if (net) + { + return traffic_selector_create_from_subnet(net, netbits, 0, 0); + } + } + return traffic_selector_create_dynamic(0, 0, 65535); +} + +/** + * create a rekey time from a string with hours, with fallback + */ +static u_int create_rekey(char *string) +{ + u_int rekey = 0; + + if (string) + { + rekey = atoi(string); + if (rekey) + { + return rekey * 3600; + } + } + /* every 12 hours */ + return 12 * 3600; +} + +/** + * Implementation of peer_enumerator_t.public.enumerate + */ +static bool peer_enumerator_enumerate(peer_enumerator_t *this, peer_cfg_t **cfg) +{ + char *name, *ike_proposal, *esp_proposal, *ike_rekey, *esp_rekey; + char *local_id, *local_addr, *local_net; + char *remote_id, *remote_addr, *remote_net; + child_cfg_t *child_cfg; + ike_cfg_t *ike_cfg; + auth_cfg_t *auth; + lifetime_cfg_t lifetime = { + .time = { + .life = create_rekey(esp_rekey) + 300, + .rekey = create_rekey(esp_rekey), + .jitter = 300 + } + }; + + /* defaults */ + name = "unnamed"; + local_id = NULL; + remote_id = NULL; + local_addr = "0.0.0.0"; + remote_addr = "0.0.0.0"; + local_net = NULL; + remote_net = NULL; + ike_proposal = NULL; + esp_proposal = NULL; + ike_rekey = NULL; + esp_rekey = NULL; + + if (this->inner->enumerate(this->inner, &name, &local_id, &remote_id, + &local_addr, &remote_addr, &local_net, &remote_net, + &ike_proposal, &esp_proposal, &ike_rekey, &esp_rekey)) + { + DESTROY_IF(this->peer_cfg); + ike_cfg = ike_cfg_create(FALSE, FALSE, + local_addr, IKEV2_UDP_PORT, remote_addr, IKEV2_UDP_PORT); + ike_cfg->add_proposal(ike_cfg, create_proposal(ike_proposal, PROTO_IKE)); + this->peer_cfg = peer_cfg_create( + name, 2, ike_cfg, CERT_SEND_IF_ASKED, UNIQUE_NO, + 1, create_rekey(ike_rekey), 0, /* keytries, rekey, reauth */ + 1800, 900, /* jitter, overtime */ + TRUE, 60, /* mobike, dpddelay */ + NULL, NULL, /* vip, pool */ + FALSE, NULL, NULL); /* mediation, med by, peer id */ + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PSK); + auth->add(auth, AUTH_RULE_IDENTITY, + identification_create_from_string(local_id)); + this->peer_cfg->add_auth_cfg(this->peer_cfg, auth, TRUE); + + auth = auth_cfg_create(); + auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PSK); + if (remote_id) + { + auth->add(auth, AUTH_RULE_IDENTITY, + identification_create_from_string(remote_id)); + } + this->peer_cfg->add_auth_cfg(this->peer_cfg, auth, FALSE); + + child_cfg = child_cfg_create(name, &lifetime, NULL, TRUE, MODE_TUNNEL, + ACTION_NONE, ACTION_NONE, FALSE, 0); + child_cfg->add_proposal(child_cfg, create_proposal(esp_proposal, PROTO_ESP)); + child_cfg->add_traffic_selector(child_cfg, TRUE, create_ts(local_net)); + child_cfg->add_traffic_selector(child_cfg, FALSE, create_ts(remote_net)); + this->peer_cfg->add_child_cfg(this->peer_cfg, child_cfg); + *cfg = this->peer_cfg; + return TRUE; + } + return FALSE; +} + +/** + * Implementation of peer_enumerator_t.public.destroy + */ +static void peer_enumerator_destroy(peer_enumerator_t *this) +{ + DESTROY_IF(this->peer_cfg); + this->inner->destroy(this->inner); + free(this); +} + +/** + * Implementation of backend_t.create_peer_cfg_enumerator. + */ +static enumerator_t* create_peer_cfg_enumerator(private_uci_config_t *this, + identification_t *me, + identification_t *other) +{ + peer_enumerator_t *e = malloc_thing(peer_enumerator_t); + + e->public.enumerate = (void*)peer_enumerator_enumerate; + e->public.destroy = (void*)peer_enumerator_destroy; + e->peer_cfg = NULL; + e->inner = this->parser->create_section_enumerator(this->parser, + "local_id", "remote_id", "local_addr", "remote_addr", + "local_net", "remote_net", "ike_proposal", "esp_proposal", + "ike_rekey", "esp_rekey", NULL); + if (!e->inner) + { + free(e); + return NULL; + } + return &e->public; +} + +/** + * enumerator implementation for create_ike_cfg_enumerator + */ +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** currently enumerated ike config */ + ike_cfg_t *ike_cfg; + /** inner uci_parser section enumerator */ + enumerator_t *inner; +} ike_enumerator_t; + +/** + * Implementation of peer_enumerator_t.public.enumerate + */ +static bool ike_enumerator_enumerate(ike_enumerator_t *this, ike_cfg_t **cfg) +{ + char *local_addr, *remote_addr, *ike_proposal; + + /* defaults */ + local_addr = "0.0.0.0"; + remote_addr = "0.0.0.0"; + ike_proposal = NULL; + + if (this->inner->enumerate(this->inner, NULL, + &local_addr, &remote_addr, &ike_proposal)) + { + DESTROY_IF(this->ike_cfg); + this->ike_cfg = ike_cfg_create(FALSE, FALSE, local_addr, IKEV2_UDP_PORT, + remote_addr, IKEV2_UDP_PORT); + this->ike_cfg->add_proposal(this->ike_cfg, + create_proposal(ike_proposal, PROTO_IKE)); + + *cfg = this->ike_cfg; + return TRUE; + } + return FALSE; +} + +/** + * Implementation of ike_enumerator_t.public.destroy + */ +static void ike_enumerator_destroy(ike_enumerator_t *this) +{ + DESTROY_IF(this->ike_cfg); + this->inner->destroy(this->inner); + free(this); +} + +/** + * Implementation of backend_t.create_ike_cfg_enumerator. + */ +static enumerator_t* create_ike_cfg_enumerator(private_uci_config_t *this, + host_t *me, host_t *other) +{ + ike_enumerator_t *e = malloc_thing(ike_enumerator_t); + + e->public.enumerate = (void*)ike_enumerator_enumerate; + e->public.destroy = (void*)ike_enumerator_destroy; + e->ike_cfg = NULL; + e->inner = this->parser->create_section_enumerator(this->parser, + "local_addr", "remote_addr", "ike_proposal", NULL); + if (!e->inner) + { + free(e); + return NULL; + } + return &e->public; +} + +/** + * implements backend_t.get_peer_cfg_by_name. + */ +static peer_cfg_t *get_peer_cfg_by_name(private_uci_config_t *this, char *name) +{ + enumerator_t *enumerator; + peer_cfg_t *current, *found = NULL; + + enumerator = create_peer_cfg_enumerator(this, NULL, NULL); + if (enumerator) + { + while (enumerator->enumerate(enumerator, ¤t)) + { + if (streq(name, current->get_name(current))) + { + found = current->get_ref(current); + break; + } + } + enumerator->destroy(enumerator); + } + return found; +} + +/** + * Implementation of uci_config_t.destroy. + */ +static void destroy(private_uci_config_t *this) +{ + free(this); +} + +/** + * Described in header. + */ +uci_config_t *uci_config_create(uci_parser_t *parser) +{ + private_uci_config_t *this = malloc_thing(private_uci_config_t); + + this->public.backend.create_peer_cfg_enumerator = (enumerator_t*(*)(backend_t*, identification_t *me, identification_t *other))create_peer_cfg_enumerator; + this->public.backend.create_ike_cfg_enumerator = (enumerator_t*(*)(backend_t*, host_t *me, host_t *other))create_ike_cfg_enumerator; + this->public.backend.get_peer_cfg_by_name = (peer_cfg_t* (*)(backend_t*,char*))get_peer_cfg_by_name; + this->public.destroy = (void(*)(uci_config_t*))destroy; + this->parser = parser; + + return &this->public; +} + diff --git a/src/libcharon/plugins/uci/uci_config.h b/src/libcharon/plugins/uci/uci_config.h new file mode 100644 index 000000000..130f15d85 --- /dev/null +++ b/src/libcharon/plugins/uci/uci_config.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2008 Martin Willi + * Copyright (C) 2008 Thomas Kallenberg + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup uci_config_t uci_config + * @{ @ingroup uci + */ + +#ifndef UCI_CONFIG_H_ +#define UCI_CONFIG_H_ + +#include "uci_parser.h" + +#include <config/backend.h> + +typedef struct uci_config_t uci_config_t; + +/** + * OpenWRT UCI configuration backend. + */ +struct uci_config_t { + + /** + * Implements backend_t interface + */ + backend_t backend; + + /** + * Destroy the backend. + */ + void (*destroy)(uci_config_t *this); +}; + +/** + * Create a UCI based configuration backend. + * + * @param parser UCI parser to use + * @return configuration backend + */ +uci_config_t *uci_config_create(uci_parser_t *parser); + +#endif /** UCI_CONFIG_H_ @}*/ diff --git a/src/libcharon/plugins/uci/uci_control.c b/src/libcharon/plugins/uci/uci_control.c new file mode 100644 index 000000000..3c4928be4 --- /dev/null +++ b/src/libcharon/plugins/uci/uci_control.c @@ -0,0 +1,301 @@ +/* + * Copyright (C) 2008 Thomas Kallenberg + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#define _GNU_SOURCE +#include <string.h> +#include <stdio.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <errno.h> + +#include "uci_control.h" + +#include <daemon.h> +#include <threading/thread.h> +#include <processing/jobs/callback_job.h> + +#define FIFO_FILE "/var/run/charon.fifo" + + +typedef struct private_uci_control_t private_uci_control_t; + +/** + * private data of uci_control_t + */ +struct private_uci_control_t { + + /** + * Public part + */ + uci_control_t public; + + /** + * Job + */ + callback_job_t *job; +}; + +/** + * write answer to fifo + */ +static void write_fifo(private_uci_control_t *this, char *format, ...) +{ + va_list args; + FILE *out; + + out = fopen(FIFO_FILE, "w"); + if (out) + { + va_start(args, format); + vfprintf(out, format, args); + va_end(args); + fclose(out); + } + else + { + DBG1(DBG_CFG, "writing to UCI fifo failed: %s", strerror(errno)); + } +} + +/** + * print IKE_SA status information + */ +static void status(private_uci_control_t *this, char *name) +{ + enumerator_t *configs, *sas; + iterator_t *children; + ike_sa_t *ike_sa; + child_sa_t *child_sa; + peer_cfg_t *peer_cfg; + char buf[2048]; + FILE *out = NULL; + + configs = charon->backends->create_peer_cfg_enumerator(charon->backends, + NULL, NULL, NULL, NULL); + while (configs->enumerate(configs, &peer_cfg)) + { + if (name && !streq(name, peer_cfg->get_name(peer_cfg))) + { + continue; + } + sas = charon->controller->create_ike_sa_enumerator(charon->controller); + while (sas->enumerate(sas, &ike_sa)) + { + if (!streq(ike_sa->get_name(ike_sa), peer_cfg->get_name(peer_cfg))) + { + continue; + } + if (!out) + { + out = fmemopen(buf, sizeof(buf), "w"); + if (!out) + { + continue; + } + } + fprintf(out, "%-8s %-20D %-16H ", ike_sa->get_name(ike_sa), + ike_sa->get_other_id(ike_sa), ike_sa->get_other_host(ike_sa)); + + children = ike_sa->create_child_sa_iterator(ike_sa); + while (children->iterate(children, (void**)&child_sa)) + { + fprintf(out, "%#R", + child_sa->get_traffic_selectors(child_sa, FALSE)); + } + children->destroy(children); + fprintf(out, "\n"); + } + sas->destroy(sas); + } + configs->destroy(configs); + if (out) + { + fclose(out); + write_fifo(this, "%s", buf); + } + else + { + write_fifo(this, ""); + } +} + +/** + * Initiate an IKE_SA + */ +static void initiate(private_uci_control_t *this, char *name) +{ + peer_cfg_t *peer_cfg; + child_cfg_t *child_cfg; + enumerator_t *enumerator; + + peer_cfg = charon->backends->get_peer_cfg_by_name(charon->backends, name); + if (peer_cfg) + { + enumerator = peer_cfg->create_child_cfg_enumerator(peer_cfg); + if (enumerator->enumerate(enumerator, &child_cfg) && + charon->controller->initiate(charon->controller, peer_cfg, + child_cfg->get_ref(child_cfg), + controller_cb_empty, NULL) == SUCCESS) + { + write_fifo(this, "connection '%s' established\n", name); + } + else + { + write_fifo(this, "establishing connection '%s' failed\n", name); + } + enumerator->destroy(enumerator); + } + else + { + write_fifo(this, "no connection named '%s' found\n", name); + } +} + +/** + * terminate an IKE_SA + */ +static void terminate(private_uci_control_t *this, char *name) +{ + enumerator_t *enumerator; + ike_sa_t *ike_sa; + u_int id; + + enumerator = charon->controller->create_ike_sa_enumerator(charon->controller); + while (enumerator->enumerate(enumerator, &ike_sa)) + { + if (streq(name, ike_sa->get_name(ike_sa))) + { + id = ike_sa->get_unique_id(ike_sa); + enumerator->destroy(enumerator); + charon->controller->terminate_ike(charon->controller, id, + controller_cb_empty, NULL); + write_fifo(this, "connection '%s' terminated\n", name); + return; + } + } + enumerator->destroy(enumerator); + write_fifo(this, "no active connection named '%s'\n", name); +} + +/** + * dispatch control request + */ +static void process(private_uci_control_t *this, char *message) +{ + enumerator_t* enumerator; + + enumerator = enumerator_create_token(message, " \n", ""); + if (enumerator->enumerate(enumerator, &message)) + { + if (streq(message, "status")) + { + if (enumerator->enumerate(enumerator, &message)) + { + status(this, message); + } + else + { + status(this, NULL); + } + } + else if (streq(message, "up") && + enumerator->enumerate(enumerator, &message)) + { + initiate(this, message); + } + else if (streq(message, "down") && + enumerator->enumerate(enumerator, &message)) + { + terminate(this, message); + } + else + { + write_fifo(this, "usage: status [<name>] | up <name> | down <name>\n" + " status format: name peer-id peer-addr tunnel(s)\n"); + } + } + enumerator->destroy(enumerator); +} + +/** + * read from fifo + */ +static job_requeue_t receive(private_uci_control_t *this) +{ + char message[128]; + int len; + bool oldstate; + FILE *in; + + memset(message, 0, sizeof(message)); + oldstate = thread_cancelability(TRUE); + in = fopen(FIFO_FILE, "r"); + thread_cancelability(oldstate); + if (in) + { + len = fread(message, 1, sizeof(message) - 1, in); + fclose(in); + if (len > 0) + { + process(this, message); + } + else + { + DBG1(DBG_DMN, "reading from UCI fifo failed: %s", strerror(errno)); + } + } + else + { + DBG1(DBG_DMN, "opening UCI fifo failed: %s", strerror(errno)); + } + return JOB_REQUEUE_FAIR; +} + +/** + * Implementation of uci_control_t.destroy + */ +static void destroy(private_uci_control_t *this) +{ + this->job->cancel(this->job); + unlink(FIFO_FILE); + free(this); +} + +/** + * Described in header. + */ +uci_control_t *uci_control_create() +{ + private_uci_control_t *this = malloc_thing(private_uci_control_t); + + this->public.destroy = (void(*)(uci_control_t*))destroy; + + unlink(FIFO_FILE); + if (mkfifo(FIFO_FILE, S_IRUSR|S_IWUSR) != 0) + { + DBG1(DBG_CFG, "creating UCI control fifo '%s' failed: %s", + FIFO_FILE, strerror(errno)); + } + else + { + this->job = callback_job_create((callback_job_cb_t)receive, + this, NULL, NULL); + charon->processor->queue_job(charon->processor, (job_t*)this->job); + } + return &this->public; +} + diff --git a/src/libcharon/plugins/uci/uci_control.h b/src/libcharon/plugins/uci/uci_control.h new file mode 100644 index 000000000..794220aa1 --- /dev/null +++ b/src/libcharon/plugins/uci/uci_control.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Thomas Kallenberg + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup uci_control_t uci_control + * @{ @ingroup uci + */ + +#ifndef UCI_CONTROL_H_ +#define UCI_CONTROL_H_ + +typedef struct uci_control_t uci_control_t; + +/** + * UCI control interface, uses a simple FIFO file + */ +struct uci_control_t { + + /** + * Destroy the controller + */ + void (*destroy)(uci_control_t *this); +}; + +/** + * Create a UCI based configuration backend. + */ +uci_control_t *uci_control_create(); + +#endif /** UCI_CONTROL_H_ @}*/ diff --git a/src/libcharon/plugins/uci/uci_creds.c b/src/libcharon/plugins/uci/uci_creds.c new file mode 100644 index 000000000..4d664feb2 --- /dev/null +++ b/src/libcharon/plugins/uci/uci_creds.c @@ -0,0 +1,174 @@ +/* + * Copyright (C) 2008 Thomas Kallenberg + * Copyright (C) 2008 Martin Willi + * Copyright (C) 2008 Tobias Brunner + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "uci_creds.h" + +#include <daemon.h> +#include <credentials/keys/shared_key.h> +#include <utils/identification.h> + +typedef struct private_uci_creds_t private_uci_creds_t; + +/** + * Private data of an uci_creds_t object + */ +struct private_uci_creds_t { + /** + * Public part + */ + uci_creds_t public; + + /** + * UCI parser context + */ + uci_parser_t *parser; +}; + +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** inneer UCI enumerator */ + enumerator_t *inner; + /** currently enumerated shared shared */ + shared_key_t *current; + /** local ID to match */ + identification_t *me; + /** remote ID to match */ + identification_t *other; +} shared_enumerator_t; + +/** + * Implementation of shared_enumerator_t.public.enumerate + */ +static bool shared_enumerator_enumerate(shared_enumerator_t *this, + shared_key_t **key, id_match_t *me, id_match_t *other) +{ + char *local_id, *remote_id, *psk; + identification_t *local, *remote; + + while (TRUE) + { + /* defaults */ + local_id = "%any"; + remote_id = "%any"; + psk = NULL; + + if (!this->inner->enumerate(this->inner, NULL, + &local_id, &remote_id, &psk)) + { + return FALSE; + } + if (psk == NULL) + { + continue; + } + if (me) + { + local = identification_create_from_string(local_id); + *me = this->me ? this->me->matches(this->me, local) + : ID_MATCH_ANY; + local->destroy(local); + if (!*me) + { + continue; + } + } + if (other) + { + remote = identification_create_from_string(remote_id); + *other = this->other ? this->other->matches(this->other, remote) + : ID_MATCH_ANY; + remote->destroy(remote); + if (!*other) + { + continue; + } + } + break; + } + DESTROY_IF(this->current); + this->current = shared_key_create(SHARED_IKE, + chunk_clone(chunk_create(psk, strlen(psk)))); + *key = this->current; + return TRUE; +} + +/** + * Implementation of shared_enumerator_t.public.destroy + */ +static void shared_enumerator_destroy(shared_enumerator_t *this) +{ + this->inner->destroy(this->inner); + DESTROY_IF(this->current); + free(this); +} + +/** + * Implementation of backend_t.create_shared_cfg_enumerator. + */ +static enumerator_t* create_shared_enumerator(private_uci_creds_t *this, + shared_key_type_t type, + identification_t *me, + identification_t *other) +{ + shared_enumerator_t *e; + + if (type != SHARED_IKE) + { + return NULL; + } + + e = malloc_thing(shared_enumerator_t); + e->current = NULL; + e->public.enumerate = (void*)shared_enumerator_enumerate; + e->public.destroy = (void*)shared_enumerator_destroy; + e->me = me; + e->other = other; + e->inner = this->parser->create_section_enumerator(this->parser, + "local_id", "remote_id", "psk", NULL); + if (!e->inner) + { + free(e); + return NULL; + } + return &e->public; +} + +/** + * Implementation of uci_creds_t.destroy + */ +static void destroy(private_uci_creds_t *this) +{ + free(this); +} + +uci_creds_t *uci_creds_create(uci_parser_t *parser) +{ + private_uci_creds_t *this = malloc_thing(private_uci_creds_t); + + this->public.credential_set.create_shared_enumerator = (enumerator_t*(*)(credential_set_t*, shared_key_type_t, identification_t*, identification_t*))create_shared_enumerator; + this->public.credential_set.create_private_enumerator = (enumerator_t*(*) (credential_set_t*, key_type_t, identification_t*))return_null; + this->public.credential_set.create_cert_enumerator = (enumerator_t*(*) (credential_set_t*, certificate_type_t, key_type_t,identification_t *, bool))return_null; + this->public.credential_set.create_cdp_enumerator = (enumerator_t*(*) (credential_set_t *,certificate_type_t, identification_t *))return_null; + this->public.credential_set.cache_cert = (void (*)(credential_set_t *, certificate_t *))nop; + this->public.destroy = (void(*) (uci_creds_t*))destroy; + + this->parser = parser; + + return &this->public; +} + diff --git a/src/libcharon/plugins/uci/uci_creds.h b/src/libcharon/plugins/uci/uci_creds.h new file mode 100644 index 000000000..a283ed9f5 --- /dev/null +++ b/src/libcharon/plugins/uci/uci_creds.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2008 Martin Willi + * Copyright (C) 2008 Thomas Kallenberg + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup uci_creds_t uci_creds + * @{ @ingroup uci + */ + +#ifndef UCI_CREDS_H_ +#define UCI_CREDS_H_ + +#include "uci_parser.h" + +#include <credentials/credential_set.h> + +typedef struct uci_creds_t uci_creds_t; + +/** + * OpenWRT UCI credential set implementation. + */ +struct uci_creds_t { + + /** + * Implements credential set interface. + */ + credential_set_t credential_set; + + /** + * Destroy the backend. + */ + void (*destroy)(uci_creds_t *this); +}; + +/** + * Create a UCI based credential set. + * + * @param parser UCI parser to use + * @return credential set + */ +uci_creds_t *uci_creds_create(uci_parser_t *parser); + +#endif /** UCI_CREDS_H_ @}*/ diff --git a/src/libcharon/plugins/uci/uci_parser.c b/src/libcharon/plugins/uci/uci_parser.c new file mode 100644 index 000000000..6de55d218 --- /dev/null +++ b/src/libcharon/plugins/uci/uci_parser.c @@ -0,0 +1,186 @@ +/* + * Copyright (C) 2008 Martin Willi + * Copyright (C) 2008 Thomas Kallenberg + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "uci_parser.h" + +#include <stdarg.h> + +#include <library.h> +#include <uci.h> + +typedef struct private_uci_parser_t private_uci_parser_t; + +/** + * Private data of an uci_parser_t object + */ +struct private_uci_parser_t { + + /** + * Public part + */ + uci_parser_t public; + + /** + * UCI package name this parser reads + */ + char *package; +}; + +/** + * enumerator implementation create_section_enumerator + */ +typedef struct { + /** implements enumerator */ + enumerator_t public; + /** currently enumerated uci section */ + struct uci_element *current; + /** all uci ipsec config sections */ + struct uci_list *list; + /** uci conntext */ + struct uci_context *ctx; + /** ipsec uci package */ + struct uci_package *package; + /** NULL terminated list of keywords */ + char *keywords[]; +} section_enumerator_t; + +/** + * Implementation of section_enumerator_t.enumerate + */ +static bool section_enumerator_enumerate(section_enumerator_t *this, ...) +{ + struct uci_element *element; + char **value; + va_list args; + int i; + + if (&this->current->list == this->list) + { + return FALSE; + } + + va_start(args, this); + + value = va_arg(args, char**); + if (value) + { + if (uci_lookup(this->ctx, &element, this->package, + this->current->name, "name") == UCI_OK) + { /* use "name" attribute as config name if available ... */ + *value = uci_to_option(element)->value; + } + else + { /* ... or the section name becomes config name */ + *value = uci_to_section(this->current)->type; + } + } + + /* followed by keyword parameters */ + for (i = 0; this->keywords[i]; i++) + { + value = va_arg(args, char**); + if (value && uci_lookup(this->ctx, &element, this->package, + this->current->name, this->keywords[i]) == UCI_OK) + { + *value = uci_to_option(element)->value; + } + } + va_end(args); + + this->current = list_to_element(this->current->list.next); + return TRUE; +} + +/** + * Implementation of section_enumerator_t.public.destroy + */ +static void section_enumerator_destroy(section_enumerator_t *this) +{ + uci_free_context(this->ctx); + free(this); +} + +/** + * Implementation of backend_t.create_section_enumerator. + */ +static enumerator_t* create_section_enumerator(private_uci_parser_t *this, ...) +{ + section_enumerator_t *e; + va_list args; + int i; + + /* allocate enumerator large enought to hold keyword pointers */ + i = 1; + va_start(args, this); + while (va_arg(args, char*)) + { + i++; + } + va_end(args); + e = malloc(sizeof(section_enumerator_t) + sizeof(char*) * i); + i = 0; + va_start(args, this); + do + { + e->keywords[i] = va_arg(args, char*); + } + while (e->keywords[i++]); + va_end(args); + + e->public.enumerate = (void*)section_enumerator_enumerate; + e->public.destroy = (void*)section_enumerator_destroy; + + /* load uci context */ + e->ctx = uci_alloc_context(); + if (uci_load(e->ctx, this->package, &e->package) != UCI_OK) + { + section_enumerator_destroy(e); + return NULL; + } + e->list = &e->package->sections; + e->current = list_to_element(e->list->next); + if (e->current->type != UCI_TYPE_SECTION) + { + section_enumerator_destroy(e); + return NULL; + } + return &e->public; +} + +/** + * Implementation of uci_parser_t.destroy. + */ +static void destroy(private_uci_parser_t *this) +{ + free(this->package); + free(this); +} + +/** + * Described in header. + */ +uci_parser_t *uci_parser_create(char *package) +{ + private_uci_parser_t *this = malloc_thing(private_uci_parser_t); + + this->public.create_section_enumerator = (enumerator_t*(*)(uci_parser_t*, ...))create_section_enumerator; + this->public.destroy = (void(*)(uci_parser_t*))destroy; + + this->package = strdup(package); + + return &this->public; +} + diff --git a/src/libcharon/plugins/uci/uci_parser.h b/src/libcharon/plugins/uci/uci_parser.h new file mode 100644 index 000000000..7217e507a --- /dev/null +++ b/src/libcharon/plugins/uci/uci_parser.h @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2008 Martin Willi + * Copyright (C) 2008 Thomas Kallenberg + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup uci_parser_t uci_parser + * @{ @ingroup uci + */ + +#ifndef UCI_PARSER_H_ +#define UCI_PARSER_H_ + +#include <utils/enumerator.h> + +typedef struct uci_parser_t uci_parser_t; + +/** + * Wrapper to parse UCI sections with an enumerator. + */ +struct uci_parser_t { + + /** + * Create an enumerator over a section. + * + * The enumerator returns a section name followed by values for the keywords + * specified in the variable argument list of this function. + * + * @param ... variable argument list with keywords, NULL terminated + * @return enumerator over sections + */ + enumerator_t* (*create_section_enumerator)(uci_parser_t *this, ...); + + /** + * Destroy the parser. + */ + void (*destroy)(uci_parser_t *this); +}; + +/** + * Create a UCI parser. + * + * @param package UCI package this parser should read + * @return parser context + */ +uci_parser_t *uci_parser_create(char *package); + +#endif /** UCI_PARSER_H_ @}*/ diff --git a/src/libcharon/plugins/uci/uci_plugin.c b/src/libcharon/plugins/uci/uci_plugin.c new file mode 100644 index 000000000..742fcf4d0 --- /dev/null +++ b/src/libcharon/plugins/uci/uci_plugin.c @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2008 Thomas Kallenberg + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "uci_plugin.h" +#include "uci_config.h" +#include "uci_creds.h" +#include "uci_control.h" + +#include <daemon.h> + +/** + * UCI package name to use for lookups + */ +#define UCI_PACKAGE "strongswan" + +typedef struct private_uci_plugin_t private_uci_plugin_t; + +/** + * private data of uci plugin + */ +struct private_uci_plugin_t { + + /** + * implements plugin interface + */ + uci_plugin_t public; + + /** + * UCI configuration backend + */ + uci_config_t *config; + + /** + * UCI credential set implementation + */ + uci_creds_t *creds; + + /** + * UCI parser wrapper + */ + uci_parser_t *parser; + + /** + * UCI control interface + */ + uci_control_t *control; +}; + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(private_uci_plugin_t *this) +{ + charon->backends->remove_backend(charon->backends, &this->config->backend); + charon->credentials->remove_set(charon->credentials, &this->creds->credential_set); + this->config->destroy(this->config); + this->creds->destroy(this->creds); + this->parser->destroy(this->parser); + this->control->destroy(this->control); + free(this); +} + +/* + * see header file + */ +plugin_t *uci_plugin_create() +{ + private_uci_plugin_t *this = malloc_thing(private_uci_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + this->parser = uci_parser_create(UCI_PACKAGE); + this->config = uci_config_create(this->parser); + this->creds = uci_creds_create(this->parser); + this->control = uci_control_create(); + charon->backends->add_backend(charon->backends, &this->config->backend); + charon->credentials->add_set(charon->credentials, &this->creds->credential_set); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/uci/uci_plugin.h b/src/libcharon/plugins/uci/uci_plugin.h new file mode 100644 index 000000000..980ab26fd --- /dev/null +++ b/src/libcharon/plugins/uci/uci_plugin.h @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2008 Thomas Kallenberg + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup uci uci + * @ingroup cplugins + * + * @defgroup uci_plugin uci_plugin + * @{ @ingroup uci + */ + +#ifndef UCI_PLUGIN_H_ +#define UCI_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct uci_plugin_t uci_plugin_t; + +/** + * OpenWRT UCI (Unified Configuration Interface) configuration plugin. + */ +struct uci_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** UCI_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/unit_tester/Makefile.am b/src/libcharon/plugins/unit_tester/Makefile.am new file mode 100644 index 000000000..e27d1f859 --- /dev/null +++ b/src/libcharon/plugins/unit_tester/Makefile.am @@ -0,0 +1,29 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-unit-tester.la +else +plugin_LTLIBRARIES = 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b/src/libcharon/plugins/unit_tester/tests.h @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup tests tests + * @{ @ingroup unit_tester + */ + +DEFINE_TEST("linked_list_t->remove()", test_list_remove, FALSE) +DEFINE_TEST("simple enumerator", test_enumerate, FALSE) +DEFINE_TEST("nested enumerator", test_enumerate_nested, FALSE) +DEFINE_TEST("filtered enumerator", test_enumerate_filtered, FALSE) +DEFINE_TEST("token enumerator", test_enumerate_token, FALSE) +DEFINE_TEST("auth cfg", test_auth_cfg, FALSE) +DEFINE_TEST("CURL get", test_curl_get, FALSE) +DEFINE_TEST("MySQL operations", test_mysql, FALSE) +DEFINE_TEST("SQLite operations", test_sqlite, FALSE) +DEFINE_TEST("mutex primitive", test_mutex, FALSE) +DEFINE_TEST("RSA key generation", test_rsa_gen, FALSE) +DEFINE_TEST("RSA subjectPublicKeyInfo loading", test_rsa_load_any, FALSE) +DEFINE_TEST("X509 certificate", test_cert_x509, FALSE) +DEFINE_TEST("Mediation database key fetch", test_med_db, FALSE) +DEFINE_TEST("Base64 converter", test_chunk_base64, FALSE) +DEFINE_TEST("IP pool", test_pool, FALSE) +DEFINE_TEST("SSH agent", test_agent, FALSE) +DEFINE_TEST("ID parts", test_id_parts, FALSE) +DEFINE_TEST("ID wildcards", test_id_wildcards, FALSE) +DEFINE_TEST("ID equals", test_id_equals, FALSE) +DEFINE_TEST("ID matches", test_id_matches, FALSE) + +/** @}*/ diff --git a/src/libcharon/plugins/unit_tester/tests/test_agent.c b/src/libcharon/plugins/unit_tester/tests/test_agent.c new file mode 100644 index 000000000..baab629be --- /dev/null +++ b/src/libcharon/plugins/unit_tester/tests/test_agent.c @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <library.h> +#include <daemon.h> + +/******************************************************************************* + * SSH agent signature creation and verification + ******************************************************************************/ +bool test_agent() +{ + char *path; + chunk_t sig, data = chunk_from_chars(0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08); + private_key_t *private; + public_key_t *public; + + path = getenv("SSH_AUTH_SOCK"); + if (!path) + { + DBG1(DBG_CFG, "ssh-agent not found."); + return FALSE; + } + + private = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, KEY_RSA, + BUILD_AGENT_SOCKET, path, BUILD_END); + if (!private) + { + return FALSE; + } + if (!private->sign(private, SIGN_RSA_EMSA_PKCS1_SHA1, data, &sig)) + { + return FALSE; + } + public = private->get_public_key(private); + if (!public) + { + return FALSE;; + } + if (!public->verify(public, SIGN_RSA_EMSA_PKCS1_SHA1, data, sig)) + { + return FALSE; + } + free(sig.ptr); + data.ptr[1] = 0x01; /* fake it */ + if (public->verify(public, SIGN_RSA_EMSA_PKCS1_SHA1, data, sig)) + { + return FALSE; + } + + private->destroy(private); + public->destroy(public); + + return TRUE; +} + diff --git a/src/libcharon/plugins/unit_tester/tests/test_auth_info.c b/src/libcharon/plugins/unit_tester/tests/test_auth_info.c new file mode 100644 index 000000000..d6abe7a05 --- /dev/null +++ b/src/libcharon/plugins/unit_tester/tests/test_auth_info.c @@ -0,0 +1,140 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <daemon.h> +#include <library.h> +#include <config/auth_cfg.h> + + +static chunk_t certchunk = chunk_from_chars( + 0x30,0x82,0x02,0xfa,0x30,0x82,0x01,0xe2,0xa0,0x03,0x02,0x01,0x02,0x02,0x10,0x5a, + 0xf2,0x65,0xae,0x78,0xff,0x23,0xde,0xf7,0xa6,0xa3,0x94,0x8c,0x3f,0xa0,0xc1,0x30, + 0x0d,0x06,0x09,0x2a,0x86,0x48,0x86,0xf7,0x0d,0x01,0x01,0x05,0x05,0x00,0x30,0x39, + 0x31,0x0b,0x30,0x09,0x06,0x03,0x55,0x04,0x06,0x13,0x02,0x43,0x48,0x31,0x19,0x30, + 0x17,0x06,0x03,0x55,0x04,0x0a,0x13,0x10,0x4c,0x69,0x6e,0x75,0x78,0x20,0x73,0x74, + 0x72,0x6f,0x6e,0x67,0x53,0x77,0x61,0x6e,0x31,0x0f,0x30,0x0d,0x06,0x03,0x55,0x04, + 0x03,0x13,0x06,0x6d,0x61,0x72,0x74,0x69,0x6e,0x30,0x1e,0x17,0x0d,0x30,0x37,0x30, + 0x34,0x32,0x37,0x30,0x37,0x31,0x34,0x32,0x36,0x5a,0x17,0x0d,0x31,0x32,0x30,0x34, + 0x32,0x35,0x30,0x37,0x31,0x34,0x32,0x36,0x5a,0x30,0x39,0x31,0x0b,0x30,0x09,0x06, + 0x03,0x55,0x04,0x06,0x13,0x02,0x43,0x48,0x31,0x19,0x30,0x17,0x06,0x03,0x55,0x04, + 0x0a,0x13,0x10,0x4c,0x69,0x6e,0x75,0x78,0x20,0x73,0x74,0x72,0x6f,0x6e,0x67,0x53, + 0x77,0x61,0x6e,0x31,0x0f,0x30,0x0d,0x06,0x03,0x55,0x04,0x03,0x13,0x06,0x6d,0x61, + 0x72,0x74,0x69,0x6e,0x30,0x82,0x01,0x22,0x30,0x0d,0x06,0x09,0x2a,0x86,0x48,0x86, + 0xf7,0x0d,0x01,0x01,0x01,0x05,0x00,0x03,0x82,0x01,0x0f,0x00,0x30,0x82,0x01,0x0a, + 0x02,0x82,0x01,0x01,0x00,0xd7,0xb9,0xba,0x4d,0xe2,0x3b,0x3d,0x35,0x7a,0x3f,0x88, + 0x67,0x95,0xe7,0xfd,0x9f,0xe9,0x0a,0x0d,0x79,0x3a,0x9e,0x21,0x8f,0xcb,0xe4,0x67, + 0x24,0xae,0x0c,0xda,0xb3,0xcc,0xec,0x36,0xb4,0xa8,0x4d,0xf1,0x3d,0xad,0xe4,0x8c, + 0x63,0x92,0x54,0xb7,0xb2,0x02,0xa2,0x00,0x62,0x8b,0x04,0xac,0xa0,0x17,0xad,0x17, + 0x9a,0x05,0x0d,0xd7,0xb3,0x08,0x02,0xc5,0x26,0xcf,0xdd,0x05,0x42,0xfc,0x13,0x6d, + 0x9f,0xb1,0xf3,0x4f,0x82,0x1d,0xef,0x01,0xc9,0x91,0xea,0x37,0x1b,0x79,0x28,0xfa, + 0xbf,0x9f,0xb3,0xeb,0x82,0x4f,0x10,0xc6,0x4b,0xa4,0x08,0xf7,0x8e,0xf2,0x00,0xea, + 0x04,0x97,0x80,0x9f,0x65,0x86,0xde,0x6b,0xc7,0xda,0x83,0xfc,0xad,0x4a,0xaf,0x52, + 0x8b,0x4d,0x33,0xee,0x49,0x87,0x2f,0x3b,0x60,0x45,0x66,0x8f,0xe6,0x89,0xcc,0xb1, + 0x92,0x02,0x17,0x2b,0x7b,0x8e,0x90,0x47,0x84,0x84,0x59,0x95,0x81,0xd8,0xe0,0xf3, + 0x87,0xe0,0x04,0x09,0xfd,0xcc,0x3a,0x21,0x34,0xfa,0xec,0xbe,0xf5,0x9c,0xcf,0x55, + 0x80,0x7b,0xe3,0x75,0x9d,0x36,0x68,0xab,0x83,0xe3,0xad,0x01,0x53,0x0d,0x8a,0x9a, + 0xa6,0xb0,0x15,0xc9,0xc5,0xf8,0x9b,0x51,0x32,0xcf,0x97,0x6c,0xfe,0x4a,0x56,0x3c, + 0xc8,0x8f,0x4a,0x70,0x23,0x4f,0xf6,0xf7,0xe6,0x9f,0x09,0xcd,0x8f,0xea,0x20,0x7d, + 0x34,0xc0,0xc5,0xc0,0x34,0x06,0x6f,0x8b,0xeb,0x04,0x54,0x3f,0x0e,0xcd,0xe2,0x85, + 0xab,0x94,0x3e,0x91,0x6c,0x18,0x6f,0x96,0x5d,0xf2,0x8b,0x10,0xe9,0x90,0x43,0xb0, + 0x61,0x52,0xac,0xcf,0x75,0x02,0x03,0x01,0x00,0x01,0x30,0x0d,0x06,0x09,0x2a,0x86, + 0x48,0x86,0xf7,0x0d,0x01,0x01,0x05,0x05,0x00,0x03,0x82,0x01,0x01,0x00,0x09,0x63, + 0x42,0xad,0xe5,0xa3,0xf6,0xc9,0x5d,0x08,0xf2,0x78,0x7b,0xeb,0x8a,0xef,0x50,0x00, + 0xc8,0xeb,0xe9,0x26,0x94,0xcb,0x84,0x10,0x7e,0x42,0x6b,0x86,0x38,0x57,0xa6,0x02, + 0x98,0x5a,0x2c,0x8f,0x44,0x32,0x1b,0x97,0x8c,0x7e,0x4b,0xd8,0xe8,0xe8,0x0f,0x4a, + 0xb9,0x31,0x9f,0xf6,0x9f,0x0e,0x67,0x26,0x05,0x2a,0x99,0x14,0x35,0x41,0x47,0x9a, + 0xfa,0x12,0x94,0x0b,0xe9,0x27,0x7c,0x71,0x20,0xd7,0x8d,0x3b,0x97,0x19,0x2d,0x15, + 0xff,0xa4,0xf3,0x89,0x8d,0x29,0x5f,0xf6,0x3f,0x93,0xaf,0x78,0x61,0xe4,0xe1,0x2e, + 0x75,0xc1,0x2c,0xc4,0x76,0x95,0x19,0xf8,0x37,0xdc,0xd8,0x00,0x7a,0x3c,0x0f,0x49, + 0x2e,0x88,0x09,0x16,0xb3,0x92,0x33,0xdf,0x77,0x83,0x4f,0xb5,0x9e,0x30,0x8c,0x48, + 0x1d,0xd8,0x84,0xfb,0xf1,0xb9,0xa0,0xbe,0x25,0xff,0x4c,0xeb,0xef,0x2b,0xcd,0xfa, + 0x0b,0x94,0x66,0x3b,0x28,0x08,0x3f,0x3a,0xda,0x41,0xd0,0x6b,0xab,0x5e,0xbb,0x8a, + 0x9f,0xdc,0x98,0x3e,0x59,0x37,0x48,0xbe,0x69,0xde,0x85,0x82,0xf2,0x53,0x8b,0xe4, + 0x44,0xe4,0x71,0x91,0x14,0x85,0x0e,0x1e,0x79,0xdd,0x62,0xf5,0xdc,0x25,0x89,0xab, + 0x50,0x5b,0xaa,0xae,0xe3,0x64,0x6a,0x23,0x34,0xd7,0x30,0xe2,0x2a,0xc8,0x81,0x0c, + 0xec,0xd2,0x31,0xc6,0x1e,0xb6,0xc0,0x57,0xd9,0xe1,0x14,0x06,0x9b,0xf8,0x51,0x69, + 0x47,0xf0,0x9c,0xcd,0x69,0xef,0x8e,0x5f,0x62,0xda,0x10,0xf7,0x3c,0x6d,0x0f,0x33, + 0xec,0x6f,0xfd,0x94,0x07,0x16,0x41,0x32,0x06,0xa4,0xe1,0x08,0x31,0x87, +); + +/******************************************************************************* + * auth info test + ******************************************************************************/ +bool test_auth_cfg() +{ + auth_cfg_t *auth = auth_cfg_create(), *auth2; + certificate_t *c1, *c2; + enumerator_t *enumerator; + int round = 0; + void *value; + auth_rule_t type; + + c1 = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509, + BUILD_BLOB_ASN1_DER, certchunk, + BUILD_END); + if (!c1) + { + return FALSE; + } + + auth->add(auth, AUTH_RULE_SUBJECT_CERT, c1->get_ref(c1)); + c2 = auth->get(auth, AUTH_RULE_SUBJECT_CERT); + if (!c2) + { + return FALSE; + } + if (!c1->equals(c1, c2)) + { + return FALSE; + } + + enumerator = auth->create_enumerator(auth); + while (enumerator->enumerate(enumerator, &type, &value)) + { + round++; + if (round == 1 && type == AUTH_RULE_SUBJECT_CERT && value == c1) + { + continue; + } + return FALSE; + } + enumerator->destroy(enumerator); + + auth2 = auth_cfg_create(); + auth2->add(auth2, AUTH_RULE_CA_CERT, c1->get_ref(c1)); + auth2->merge(auth2, auth, FALSE); + + round = 0; + enumerator = auth2->create_enumerator(auth2); + while (enumerator->enumerate(enumerator, &type, &value)) + { + round++; + if (round == 1 && type == AUTH_RULE_CA_CERT && value == c1) + { + continue; + } + if (round == 2 && type == AUTH_RULE_SUBJECT_CERT && value == c1) + { + continue; + } + return FALSE; + } + enumerator->destroy(enumerator); + auth->destroy(auth); + auth2->destroy(auth2); + c1->destroy(c1); + return TRUE; +} + diff --git a/src/libcharon/plugins/unit_tester/tests/test_cert.c b/src/libcharon/plugins/unit_tester/tests/test_cert.c new file mode 100644 index 000000000..3b00421f8 --- /dev/null +++ b/src/libcharon/plugins/unit_tester/tests/test_cert.c @@ -0,0 +1,108 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <library.h> +#include <daemon.h> +#include <credentials/certificates/x509.h> + +/******************************************************************************* + * X509 certificate generation and parsing + ******************************************************************************/ +bool test_cert_x509() +{ + private_key_t *ca_key, *peer_key; + public_key_t *public; + certificate_t *ca_cert, *peer_cert, *parsed; + identification_t *issuer, *subject; + u_int32_t serial = htonl(0); + chunk_t encoding; + + issuer = identification_create_from_string("CN=CA, OU=Test, O=strongSwan"); + subject = identification_create_from_string("CN=Peer, OU=Test, O=strongSwan"); + + ca_key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, KEY_RSA, + BUILD_KEY_SIZE, 1024, BUILD_END); + peer_key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, KEY_RSA, + BUILD_KEY_SIZE, 1024, BUILD_END); + if (!ca_key) + { + return FALSE; + } + ca_cert = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509, + BUILD_SIGNING_KEY, ca_key, + BUILD_SUBJECT, issuer, + BUILD_SERIAL, chunk_from_thing(serial), + BUILD_X509_FLAG, X509_CA, + BUILD_END); + if (!ca_cert) + { + return FALSE; + } + + encoding = ca_cert->get_encoding(ca_cert); + parsed = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509, + BUILD_BLOB_ASN1_DER, encoding, + BUILD_END); + chunk_free(&encoding); + if (!parsed) + { + return FALSE; + } + if (!parsed->issued_by(parsed, ca_cert)) + { + return FALSE; + } + parsed->destroy(parsed); + + serial = htonl(ntohl(serial) + 1); + public = peer_key->get_public_key(peer_key); + peer_cert = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509, + BUILD_SIGNING_KEY, ca_key, + BUILD_SIGNING_CERT, ca_cert, + BUILD_PUBLIC_KEY, public, + BUILD_SUBJECT, subject, + BUILD_SERIAL, chunk_from_thing(serial), + BUILD_END); + public->destroy(public); + if (!peer_cert) + { + return FALSE; + } + + encoding = peer_cert->get_encoding(peer_cert); + parsed = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509, + BUILD_BLOB_ASN1_DER, encoding, + BUILD_END); + chunk_free(&encoding); + if (!parsed) + { + return FALSE; + } + if (!parsed->issued_by(parsed, ca_cert)) + { + return FALSE; + } + parsed->destroy(parsed); + + ca_cert->destroy(ca_cert); + ca_key->destroy(ca_key); + peer_cert->destroy(peer_cert); + peer_key->destroy(peer_key); + issuer->destroy(issuer); + subject->destroy(subject); + return TRUE; +} + + diff --git a/src/libcharon/plugins/unit_tester/tests/test_chunk.c b/src/libcharon/plugins/unit_tester/tests/test_chunk.c new file mode 100644 index 000000000..2e0905b2c --- /dev/null +++ b/src/libcharon/plugins/unit_tester/tests/test_chunk.c @@ -0,0 +1,82 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <library.h> +#include <daemon.h> + +/******************************************************************************* + * Base64 encoding/decoding test + ******************************************************************************/ +bool test_chunk_base64() +{ + /* test vectors from RFC4648: + * + * BASE64("") = "" + * BASE64("f") = "Zg==" + * BASE64("fo") = "Zm8=" + * BASE64("foo") = "Zm9v" + * BASE64("foob") = "Zm9vYg==" + * BASE64("fooba") = "Zm9vYmE=" + * BASE64("foobar") = "Zm9vYmFy" + */ + + typedef struct { + char *in; + char *out; + } testdata_t; + + testdata_t test[] = { + {"", ""}, + {"f", "Zg=="}, + {"fo", "Zm8="}, + {"foo", "Zm9v"}, + {"foob", "Zm9vYg=="}, + {"fooba", "Zm9vYmE="}, + {"foobar", "Zm9vYmFy"}, + }; + int i; + + for (i = 0; i < countof(test); i++) + { + chunk_t out; + + out = chunk_to_base64(chunk_create(test[i].in, strlen(test[i].in)), NULL); + + if (!streq(out.ptr, test[i].out)) + { + DBG1(DBG_CFG, "base64 conversion error - should %s, is %s", + test[i].out, out.ptr); + return FALSE; + } + free(out.ptr); + } + + for (i = 0; i < countof(test); i++) + { + chunk_t out; + + out = chunk_from_base64(chunk_create(test[i].out, strlen(test[i].out)), NULL); + + if (!strneq(out.ptr, test[i].in, out.len)) + { + DBG1(DBG_CFG, "base64 conversion error - should %s, is %#B", + test[i].in, &out); + return FALSE; + } + free(out.ptr); + } + return TRUE; +} + diff --git a/src/libcharon/plugins/unit_tester/tests/test_curl.c b/src/libcharon/plugins/unit_tester/tests/test_curl.c new file mode 100644 index 000000000..21656a94e --- /dev/null +++ b/src/libcharon/plugins/unit_tester/tests/test_curl.c @@ -0,0 +1,44 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <daemon.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <netdb.h> + +/******************************************************************************* + * curl get test + ******************************************************************************/ + +bool test_curl_get() +{ + chunk_t chunk; + + if (lib->fetcher->fetch(lib->fetcher, "http://www.strongswan.org", + &chunk, FETCH_END) != SUCCESS) + { + return FALSE; + } + free(chunk.ptr); + + if (lib->fetcher->fetch(lib->fetcher, "http://www.google.com", + &chunk, FETCH_END) != SUCCESS) + { + return FALSE; + } + free(chunk.ptr); + return TRUE; +} + diff --git a/src/libcharon/plugins/unit_tester/tests/test_enumerator.c b/src/libcharon/plugins/unit_tester/tests/test_enumerator.c new file mode 100644 index 000000000..edbf0f5bb --- /dev/null +++ b/src/libcharon/plugins/unit_tester/tests/test_enumerator.c @@ -0,0 +1,306 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <utils/linked_list.h> + + +/******************************************************************************* + * linked list remove test + ******************************************************************************/ +bool test_list_remove() +{ + void *a = (void*)1, *b = (void*)2; + linked_list_t *list; + + list = linked_list_create(); + list->insert_last(list, a); + if (list->remove(list, a, NULL) != 1) + { + return FALSE; + } + list->insert_last(list, a); + list->insert_first(list, a); + list->insert_last(list, a); + list->insert_last(list, b); + if (list->remove(list, a, NULL) != 3) + { + return FALSE; + } + if (list->remove(list, a, NULL) != 0) + { + return FALSE; + } + if (list->get_count(list) != 1) + { + return FALSE; + } + if (list->remove(list, b, NULL) != 1) + { + return FALSE; + } + if (list->remove(list, b, NULL) != 0) + { + return FALSE; + } + list->destroy(list); + return TRUE; +} + +/******************************************************************************* + * Simple insert first/last and enumerate test + ******************************************************************************/ +bool test_enumerate() +{ + int round, x; + void *a = (void*)4, *b = (void*)3, *c = (void*)2, *d = (void*)5, *e = (void*)1; + linked_list_t *list; + enumerator_t *enumerator; + + list = linked_list_create(); + + list->insert_last(list, a); + list->insert_first(list, b); + list->insert_first(list, c); + list->insert_last(list, d); + list->insert_first(list, e); + + round = 1; + enumerator = list->create_enumerator(list); + while (enumerator->enumerate(enumerator, &x)) + { + if (round != x) + { + return FALSE; + } + round++; + } + enumerator->destroy(enumerator); + + list->destroy(list); + return TRUE; +} + +/******************************************************************************* + * nested enumerator test + ******************************************************************************/ + +static bool bad_data; + +static enumerator_t* create_inner(linked_list_t *outer, void *data) +{ + if (data != (void*)101) + { + bad_data = TRUE; + } + return outer->create_enumerator(outer); +} + + +static void destroy_data(void *data) +{ + if (data != (void*)101) + { + bad_data = TRUE; + } +} + +bool test_enumerate_nested() +{ + int round, x; + void *a = (void*)1, *b = (void*)2, *c = (void*)3, *d = (void*)4, *e = (void*)5; + linked_list_t *list, *l1, *l2, *l3; + enumerator_t *enumerator; + + bad_data = FALSE; + list = linked_list_create(); + l1 = linked_list_create(); + l2 = linked_list_create(); + l3 = linked_list_create(); + list->insert_last(list, l1); + list->insert_last(list, l2); + list->insert_last(list, l3); + + l1->insert_last(l1, a); + l1->insert_last(l1, b); + l3->insert_last(l3, c); + l3->insert_last(l3, d); + l3->insert_last(l3, e); + + round = 1; + enumerator = enumerator_create_nested(list->create_enumerator(list), + (void*)create_inner, (void*)101, destroy_data); + while (enumerator->enumerate(enumerator, &x)) + { + if (round != x) + { + return FALSE; + } + round++; + } + enumerator->destroy(enumerator); + + list->destroy(list); + l1->destroy(l1); + l2->destroy(l2); + l3->destroy(l3); + return !bad_data; +} + + +/******************************************************************************* + * filtered enumerator test + ******************************************************************************/ +static bool filter(void *data, int *v, int *vo, int *w, int *wo, + int *x, int *xo, int *y, int *yo, int *z, int *zo) +{ + int val = *v; + + *vo = val++; + *wo = val++; + *xo = val++; + *yo = val++; + *zo = val++; + if (data != (void*)101) + { + return FALSE; + } + return TRUE; +} + +bool test_enumerate_filtered() +{ + int round, v, w, x, y, z; + void *a = (void*)1, *b = (void*)2, *c = (void*)3, *d = (void*)4, *e = (void*)5; + linked_list_t *list; + enumerator_t *enumerator; + + bad_data = FALSE; + list = linked_list_create(); + + list->insert_last(list, a); + list->insert_last(list, b); + list->insert_last(list, c); + list->insert_last(list, d); + list->insert_last(list, e); + + round = 1; + enumerator = enumerator_create_filter(list->create_enumerator(list), + (void*)filter, (void*)101, destroy_data); + while (enumerator->enumerate(enumerator, &v, &w, &x, &y, &z)) + { + if (v != round || w != round + 1 || x != round + 2 || + y != round + 3 || z != round + 4) + { + return FALSE; + } + round++; + } + enumerator->destroy(enumerator); + + list->destroy(list); + return !bad_data; +} + +/******************************************************************************* + * token parser test + ******************************************************************************/ + +bool test_enumerate_token() +{ + enumerator_t *enumerator; + char *token; + int i, num; + struct { + char *string; + char *sep; + char *trim; + } tests1[] = { + {"abc, cde, efg", ",", " "}, + {" abc 1:2 cde;3 4efg5. ", ":;.,", " 12345"}, + {"abc.cde,efg", ",.", ""}, + {" abc cde efg ", " ", " "}, + {"a'abc' c 'cde' cefg", " ", " abcd"}, + {"'abc' abc 'cde'd 'efg'", " ", " abcd"}, + }, tests2[] = { + {"a, b, c", ",", " "}, + {"a,b,c", ",", " "}, + {" a 1:2 b;3 4c5. ", ":;.,", " 12345"}, + {"a.b,c", ",.", ""}, + {" a b c ", " ", " "}, + }; + + for (num = 0; num < countof(tests1); num++) + { + i = 0; + enumerator = enumerator_create_token(tests1[num].string, + tests1[num].sep, tests1[num].trim); + while (enumerator->enumerate(enumerator, &token)) + { + switch (i) + { + case 0: + if (!streq(token, "abc")) return FALSE; + break; + case 1: + if (!streq(token, "cde")) return FALSE; + break; + case 2: + if (!streq(token, "efg")) return FALSE; + break; + default: + return FALSE; + } + i++; + } + if (i != 3) + { + return FALSE; + } + enumerator->destroy(enumerator); + } + + for (num = 0; num < countof(tests2); num++) + { + i = 0; + enumerator = enumerator_create_token(tests2[num].string, + tests2[num].sep, tests2[num].trim); + while (enumerator->enumerate(enumerator, &token)) + { + switch (i) + { + case 0: + if (!streq(token, "a")) return FALSE; + break; + case 1: + if (!streq(token, "b")) return FALSE; + break; + case 2: + if (!streq(token, "c")) return FALSE; + break; + default: + return FALSE; + } + i++; + } + if (i != 3) + { + return FALSE; + } + enumerator->destroy(enumerator); + } + + return TRUE; +} + diff --git a/src/libcharon/plugins/unit_tester/tests/test_id.c b/src/libcharon/plugins/unit_tester/tests/test_id.c new file mode 100644 index 000000000..868a2ca8b --- /dev/null +++ b/src/libcharon/plugins/unit_tester/tests/test_id.c @@ -0,0 +1,249 @@ +/* + * Copyright (C) 2009 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <daemon.h> + +/******************************************************************************* + * identification part enumeration test + ******************************************************************************/ +bool test_id_parts() +{ + identification_t *id; + enumerator_t *enumerator; + id_part_t part; + chunk_t data; + int i = 0; + + id = identification_create_from_string("C=CH, O=strongSwan, CN=tester"); + + enumerator = id->create_part_enumerator(id); + while (enumerator->enumerate(enumerator, &part, &data)) + { + switch (i++) + { + case 0: + if (part != ID_PART_RDN_C || + !chunk_equals(data, chunk_create("CH", 2))) + { + return FALSE; + } + break; + case 1: + if (part != ID_PART_RDN_O || + !chunk_equals(data, chunk_create("strongSwan", 10))) + { + return FALSE; + } + break; + case 2: + if (part != ID_PART_RDN_CN || + !chunk_equals(data, chunk_create("tester", 6))) + { + return FALSE; + } + break; + default: + return FALSE; + } + } + if (i < 3) + { + return FALSE; + } + enumerator->destroy(enumerator); + id->destroy(id); + return TRUE; +} + +/******************************************************************************* + * identification contains_wildcards() test + ******************************************************************************/ + +static bool test_id_wildcards_has(char *string) +{ + identification_t *id; + bool contains; + + id = identification_create_from_string(string); + contains = id->contains_wildcards(id); + id->destroy(id); + return contains; +} + +bool test_id_wildcards() +{ + if (!test_id_wildcards_has("C=*, O=strongSwan, CN=gw")) + { + return FALSE; + } + if (!test_id_wildcards_has("C=CH, O=strongSwan, CN=*")) + { + return FALSE; + } + if (test_id_wildcards_has("C=**, O=a*, CN=*a")) + { + return FALSE; + } + if (!test_id_wildcards_has("*@strongswan.org")) + { + return FALSE; + } + if (!test_id_wildcards_has("*.strongswan.org")) + { + return FALSE; + } + return TRUE; +} + +/******************************************************************************* + * identification equals test + ******************************************************************************/ + +static bool test_id_equals_one(identification_t *a, char *b_str) +{ + identification_t *b; + bool equals; + + b = identification_create_from_string(b_str); + equals = a->equals(a, b); + b->destroy(b); + return equals; +} + +bool test_id_equals() +{ + identification_t *a; + chunk_t encoding, fuzzed; + int i; + + a = identification_create_from_string( + "C=CH, E=martin@strongswan.org, CN=martin"); + + if (!test_id_equals_one(a, "C=CH, E=martin@strongswan.org, CN=martin")) + { + return FALSE; + } + if (!test_id_equals_one(a, "C=ch, E=martin@STRONGSWAN.ORG, CN=Martin")) + { + return FALSE; + } + if (test_id_equals_one(a, "C=CN, E=martin@strongswan.org, CN=martin")) + { + return FALSE; + } + if (test_id_equals_one(a, "E=martin@strongswan.org, C=CH, CN=martin")) + { + return FALSE; + } + if (test_id_equals_one(a, "E=martin@strongswan.org, C=CH, CN=martin")) + { + return FALSE; + } + encoding = chunk_clone(a->get_encoding(a)); + a->destroy(a); + + /* simple fuzzing, increment each byte of encoding */ + for (i = 0; i < encoding.len; i++) + { + if (i == 11 || i == 30 || i == 62) + { /* skip ASN.1 type fields, as equals() handles them graceful */ + continue; + } + fuzzed = chunk_clone(encoding); + fuzzed.ptr[i]++; + a = identification_create_from_encoding(ID_DER_ASN1_DN, fuzzed); + if (test_id_equals_one(a, "C=CH, E=martin@strongswan.org, CN=martin")) + { + return FALSE; + } + a->destroy(a); + free(fuzzed.ptr); + } + + /* and decrement each byte of encoding */ + for (i = 0; i < encoding.len; i++) + { + if (i == 11 || i == 30 || i == 62) + { + continue; + } + fuzzed = chunk_clone(encoding); + fuzzed.ptr[i]--; + a = identification_create_from_encoding(ID_DER_ASN1_DN, fuzzed); + if (test_id_equals_one(a, "C=CH, E=martin@strongswan.org, CN=martin")) + { + return FALSE; + } + a->destroy(a); + free(fuzzed.ptr); + } + free(encoding.ptr); + return TRUE; +} + +/******************************************************************************* + * identification matches test + ******************************************************************************/ + +static id_match_t test_id_matches_one(identification_t *a, char *b_str) +{ + identification_t *b; + id_match_t match; + + b = identification_create_from_string(b_str); + match = a->matches(a, b); + b->destroy(b); + return match; +} + +bool test_id_matches() +{ + identification_t *a; + + a = identification_create_from_string( + "C=CH, E=martin@strongswan.org, CN=martin"); + + if (test_id_matches_one(a, "C=CH, E=martin@strongswan.org, CN=martin") + != ID_MATCH_PERFECT) + { + return FALSE; + } + if (test_id_matches_one(a, "C=CH, E=*, CN=martin") != ID_MATCH_ONE_WILDCARD) + { + return FALSE; + } + if (test_id_matches_one(a, "C=CH, E=*, CN=*") != ID_MATCH_ONE_WILDCARD - 1) + { + return FALSE; + } + if (test_id_matches_one(a, "C=*, E=*, CN=*") != ID_MATCH_ONE_WILDCARD - 2) + { + return FALSE; + } + if (test_id_matches_one(a, "C=*, E=*, CN=*, O=BADInc") != ID_MATCH_NONE) + { + return FALSE; + } + if (test_id_matches_one(a, "C=*, E=*") != ID_MATCH_NONE) + { + return FALSE; + } + if (test_id_matches_one(a, "C=*, E=a@b.c, CN=*") != ID_MATCH_NONE) + { + return FALSE; + } + a->destroy(a); + return TRUE; +} diff --git a/src/libcharon/plugins/unit_tester/tests/test_med_db.c b/src/libcharon/plugins/unit_tester/tests/test_med_db.c new file mode 100644 index 000000000..7fd78b0bc --- /dev/null +++ b/src/libcharon/plugins/unit_tester/tests/test_med_db.c @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <library.h> +#include <daemon.h> +#include <utils/enumerator.h> + +#include <unistd.h> + +/******************************************************************************* + * fetch public key from mediation database + ******************************************************************************/ + +bool test_med_db() +{ + chunk_t found, keyid = chunk_from_chars( + 0xed,0x90,0xe6,0x4f,0xec,0xa2,0x1f,0x4b, + 0x68,0x97,0x99,0x24,0x22,0xe0,0xde,0x21, + 0xb9,0xd6,0x26,0x29 + ); + identification_t *id; + enumerator_t *enumerator; + public_key_t *public; + auth_cfg_t *auth; + bool good = FALSE; + + id = identification_create_from_encoding(ID_KEY_ID, keyid); + enumerator = charon->credentials->create_public_enumerator( + charon->credentials, KEY_ANY, id, NULL); + while (enumerator->enumerate(enumerator, &public, &auth)) + { + good = public->get_fingerprint(public, KEY_ID_PUBKEY_SHA1, &found); + if (good) + { + good = chunk_equals(id->get_encoding(id), found); + } + } + enumerator->destroy(enumerator); + id->destroy(id); + return good; +} + diff --git a/src/libcharon/plugins/unit_tester/tests/test_mutex.c b/src/libcharon/plugins/unit_tester/tests/test_mutex.c new file mode 100644 index 000000000..77085cb2f --- /dev/null +++ b/src/libcharon/plugins/unit_tester/tests/test_mutex.c @@ -0,0 +1,100 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <library.h> +#include <threading/mutex.h> + +#include <unistd.h> +#include <sched.h> +#include <pthread.h> + + +static mutex_t *mutex; + +static int locked = 0; + +static bool failed = FALSE; + +static pthread_barrier_t barrier; + +static void* run(void* null) +{ + int i; + + /* wait for all threads before getting in action */ + pthread_barrier_wait(&barrier); + + for (i = 0; i < 100; i++) + { + mutex->lock(mutex); + mutex->lock(mutex); + mutex->lock(mutex); + locked++; + sched_yield(); + if (locked > 1) + { + failed = TRUE; + } + locked--; + mutex->unlock(mutex); + mutex->unlock(mutex); + mutex->unlock(mutex); + } + return NULL; +} + +#define THREADS 20 + +/******************************************************************************* + * mutex test + ******************************************************************************/ +bool test_mutex() +{ + int i; + pthread_t threads[THREADS]; + + mutex = mutex_create(MUTEX_TYPE_RECURSIVE); + + for (i = 0; i < 10; i++) + { + mutex->lock(mutex); + mutex->unlock(mutex); + } + for (i = 0; i < 10; i++) + { + mutex->lock(mutex); + } + for (i = 0; i < 10; i++) + { + mutex->unlock(mutex); + } + + pthread_barrier_init(&barrier, NULL, THREADS); + + for (i = 0; i < THREADS; i++) + { + pthread_create(&threads[i], NULL, run, NULL); + } + for (i = 0; i < THREADS; i++) + { + pthread_join(threads[i], NULL); + } + pthread_barrier_destroy(&barrier); + + mutex->destroy(mutex); + + return !failed; +} + diff --git a/src/libcharon/plugins/unit_tester/tests/test_mysql.c b/src/libcharon/plugins/unit_tester/tests/test_mysql.c new file mode 100644 index 000000000..252441ef8 --- /dev/null +++ b/src/libcharon/plugins/unit_tester/tests/test_mysql.c @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <library.h> +#include <daemon.h> +#include <utils/enumerator.h> + +/******************************************************************************* + * mysql simple test + ******************************************************************************/ +bool test_mysql() +{ + database_t *db; + char *txt = "I'm a superduper test"; + chunk_t data = chunk_from_chars(0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08); + int row; + chunk_t qdata; + char *qtxt; + bool good = FALSE; + enumerator_t *enumerator; + + db = lib->db->create(lib->db, "mysql://testuser:testpass@localhost/test"); + if (!db) + { + return FALSE; + } + if (db->execute(db, NULL, "CREATE TABLE test (" + "id INT NOT NULL AUTO_INCREMENT PRIMARY KEY, " + "txt TEXT, data BLOB)") < 0) + { + return FALSE; + } + if (db->execute(db, &row, "INSERT INTO test (txt, data) VALUES (?,?)", + DB_TEXT, txt, DB_BLOB, data) < 0) + { + return FALSE; + } + if (row != 1) + { + return FALSE; + } + enumerator = db->query(db, "SELECT txt, data FROM test WHERE id = ?", + DB_INT, row, + DB_TEXT, DB_BLOB); + if (!enumerator) + { + return FALSE; + } + while (enumerator->enumerate(enumerator, &qtxt, &qdata)) + { + if (good) + { /* only one row */ + good = FALSE; + break; + } + if (streq(qtxt, txt) && chunk_equals(data, qdata)) + { + good = TRUE; + } + } + enumerator->destroy(enumerator); + if (!good) + { + return FALSE; + } + if (db->execute(db, NULL, "DELETE FROM test WHERE id = ?", DB_INT, row) != 1) + { + return FALSE; + } + if (db->execute(db, NULL, "DROP TABLE test") < 0) + { + return FALSE; + } + db->destroy(db); + return TRUE; +} + diff --git a/src/libcharon/plugins/unit_tester/tests/test_pool.c b/src/libcharon/plugins/unit_tester/tests/test_pool.c new file mode 100644 index 000000000..a68246fff --- /dev/null +++ b/src/libcharon/plugins/unit_tester/tests/test_pool.c @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <time.h> + +#include <library.h> +#include <threading/thread.h> +#include <hydra.h> + +#define ALLOCS 1000 +#define THREADS 20 + +static void* testing(void *thread) +{ + int i; + host_t *addr[ALLOCS]; + identification_t *id[ALLOCS]; + + /* prepare identities */ + for (i = 0; i < ALLOCS; i++) + { + char buf[256]; + + snprintf(buf, sizeof(buf), "%d-%d@strongswan.org", (uintptr_t)thread, i); + id[i] = identification_create_from_string(buf); + } + + /* allocate addresses */ + for (i = 0; i < ALLOCS; i++) + { + addr[i] = hydra->attributes->acquire_address(hydra->attributes, + "test", id[i], NULL); + if (!addr[i]) + { + return (void*)FALSE; + } + } + + /* release addresses */ + for (i = 0; i < ALLOCS; i++) + { + hydra->attributes->release_address(hydra->attributes, + "test", addr[i], id[i]); + } + + /* cleanup */ + for (i = 0; i < ALLOCS; i++) + { + addr[i]->destroy(addr[i]); + id[i]->destroy(id[i]); + } + return (void*)TRUE; +} + + +/******************************************************************************* + * SQL pool performance test + ******************************************************************************/ +bool test_pool() +{ + thread_t *threads[THREADS]; + uintptr_t i; + + for (i = 0; i < THREADS; i++) + { + if (!(threads[i] = thread_create((thread_main_t)testing, (void*)i))) + { + return FALSE; + } + } + for (i = 0; i < THREADS; i++) + { + bool *res = threads[i]->join(threads[i]); + if (!res) + { + return FALSE; + } + } + return TRUE; +} + diff --git a/src/libcharon/plugins/unit_tester/tests/test_rsa_gen.c b/src/libcharon/plugins/unit_tester/tests/test_rsa_gen.c new file mode 100644 index 000000000..59da15644 --- /dev/null +++ b/src/libcharon/plugins/unit_tester/tests/test_rsa_gen.c @@ -0,0 +1,120 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <library.h> +#include <daemon.h> + +/******************************************************************************* + * RSA key generation and signature + ******************************************************************************/ +bool test_rsa_gen() +{ + chunk_t data = chunk_from_chars(0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08); + chunk_t sig, crypt, plain; + private_key_t *private; + public_key_t *public; + u_int key_size; + + for (key_size = 512; key_size <= 2048; key_size *= 2) + { + private = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, KEY_RSA, + BUILD_KEY_SIZE, key_size, BUILD_END); + if (!private) + { + DBG1(DBG_CFG, "generating %d bit RSA key failed"); + return FALSE; + } + public = private->get_public_key(private); + if (!public) + { + DBG1(DBG_CFG, "generating public from private key failed"); + return FALSE; + } + if (!private->sign(private, SIGN_RSA_EMSA_PKCS1_SHA1, data, &sig)) + { + DBG1(DBG_CFG, "creating RSA signature failed"); + return FALSE; + } + if (!public->verify(public, SIGN_RSA_EMSA_PKCS1_SHA1, data, sig)) + { + DBG1(DBG_CFG, "verifying RSA signature failed"); + return FALSE; + } + sig.ptr[sig.len-1]++; + if (public->verify(public, SIGN_RSA_EMSA_PKCS1_SHA1, data, sig)) + { + DBG1(DBG_CFG, "verifying faked RSA signature succeeded!"); + return FALSE; + } + free(sig.ptr); + if (!public->encrypt(public, data, &crypt)) + { + DBG1(DBG_CFG, "encrypting data with RSA failed"); + return FALSE; + } + if (!private->decrypt(private, crypt, &plain)) + { + DBG1(DBG_CFG, "decrypting data with RSA failed"); + return FALSE; + } + if (!chunk_equals(data, plain)) + { + DBG1(DBG_CFG, "decrpyted data invalid, expected %B, got %B", & + data, &plain); + return FALSE; + } + chunk_clear(&crypt); + chunk_clear(&plain); + public->destroy(public); + private->destroy(private); + } + return TRUE; +} + +bool test_rsa_load_any() +{ + chunk_t chunk = chunk_from_chars( + 0x30,0x82,0x01,0x20,0x30,0x0d,0x06,0x09,0x2a,0x86,0x48,0x86,0xf7,0x0d,0x01,0x01, + 0x01,0x05,0x00,0x03,0x82,0x01,0x0d,0x00,0x30,0x82,0x01,0x08,0x02,0x82,0x01,0x01, + 0x00,0xc6,0x68,0x99,0x1d,0xc8,0x06,0xdb,0xcf,0x1c,0x66,0xbb,0x91,0xc3,0xd4,0x10, + 0xb2,0x08,0xa9,0xc5,0x71,0x39,0x1c,0xbe,0x5b,0x1d,0xce,0xfd,0x1b,0xfa,0xec,0x04, + 0x89,0x9f,0x79,0xc8,0x46,0x00,0xd2,0x71,0xfb,0x22,0x16,0x52,0x2f,0xda,0xbf,0x0f, + 0xe7,0x16,0xb1,0xd7,0x6a,0xa5,0xa5,0xfc,0xee,0xff,0x84,0x4c,0x81,0x3f,0xab,0x84, + 0x0e,0xed,0x4a,0x26,0x59,0xd0,0x9b,0xb5,0xe1,0xec,0x61,0xc4,0xd3,0x15,0x4c,0x29, + 0x51,0xa0,0xde,0x33,0x07,0x58,0x6c,0x36,0x1b,0x18,0x61,0xd9,0x56,0x18,0x39,0x54, + 0x8b,0xd2,0xea,0x4e,0x87,0x28,0x58,0xb9,0x88,0x3d,0x30,0xbc,0xfc,0x6d,0xad,0xab, + 0x43,0x26,0x09,0x48,0x4e,0x6e,0x8a,0x8b,0x88,0xb3,0xf0,0x29,0x25,0x79,0xb6,0xb6, + 0x71,0x3c,0x93,0x59,0xd2,0x36,0x94,0xd5,0xfc,0xf3,0x62,0x2b,0x69,0xa3,0x7a,0x47, + 0x4e,0x53,0xa2,0x35,0x1b,0x26,0x89,0xaa,0x09,0xfd,0x56,0xd7,0x75,0x2a,0xd4,0x91, + 0xc0,0xf2,0x78,0xd7,0x05,0xca,0x12,0x1d,0xd9,0xd4,0x81,0x23,0xb2,0x3c,0x38,0xd9, + 0xb4,0xdc,0x21,0xe0,0xe5,0x2d,0xd4,0xbe,0x61,0x39,0x8a,0x46,0x90,0x46,0x73,0x31, + 0xba,0x48,0xbb,0x51,0xbb,0x91,0xd5,0x62,0xad,0xd1,0x53,0x5b,0x85,0xc9,0x1d,0xa7, + 0xf6,0xa0,0xe1,0x0e,0x6c,0x22,0x5d,0x29,0x9a,0xe7,0x0f,0xe8,0x0a,0x50,0xa7,0x19, + 0x11,0xc2,0x8b,0xe0,0x8a,0xfd,0x2b,0x94,0x31,0x7a,0x78,0x9c,0x9b,0x75,0x63,0x49, + 0xa9,0xe5,0x58,0xe6,0x3a,0x99,0xcb,0x2b,0xdd,0x0e,0xdc,0x7d,0x1b,0x98,0x80,0xc3, + 0x9f,0x02,0x01,0x23); + public_key_t *public; + + public = lib->creds->create(lib->creds, CRED_PUBLIC_KEY, KEY_ANY, + BUILD_BLOB_ASN1_DER, chunk, + BUILD_END); + if (!public || public->get_keysize(public) != 256) + { + return FALSE; + } + public->destroy(public); + return TRUE; +} + diff --git a/src/libcharon/plugins/unit_tester/tests/test_sqlite.c b/src/libcharon/plugins/unit_tester/tests/test_sqlite.c new file mode 100644 index 000000000..dd8d1955e --- /dev/null +++ b/src/libcharon/plugins/unit_tester/tests/test_sqlite.c @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <library.h> +#include <daemon.h> +#include <utils/enumerator.h> + +#include <unistd.h> + + +#define DBFILE "/tmp/strongswan-test.db" + +/******************************************************************************* + * sqlite simple test + ******************************************************************************/ +bool test_sqlite() +{ + database_t *db; + char *txt = "I'm a superduper test"; + chunk_t data = chunk_from_chars(0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08); + int row; + chunk_t qdata; + char *qtxt; + bool good = FALSE; + enumerator_t *enumerator; + + db = lib->db->create(lib->db, "sqlite://" DBFILE); + if (!db) + { + return FALSE; + } + if (db->execute(db, NULL, "CREATE TABLE test (txt TEXT, data BLOB)") < 0) + { + return FALSE; + } + if (db->execute(db, &row, "INSERT INTO test (txt, data) VALUES (?,?)", + DB_TEXT, txt, DB_BLOB, data) < 0) + { + return FALSE; + } + if (row != 1) + { + return FALSE; + } + enumerator = db->query(db, "SELECT txt, data FROM test WHERE oid = ?", + DB_INT, row, + DB_TEXT, DB_BLOB); + if (!enumerator) + { + return FALSE; + } + while (enumerator->enumerate(enumerator, &qtxt, &qdata)) + { + if (good) + { /* only one row */ + good = FALSE; + break; + } + if (streq(qtxt, txt) && chunk_equals(data, qdata)) + { + good = TRUE; + } + } + enumerator->destroy(enumerator); + if (!good) + { + return FALSE; + } + if (db->execute(db, NULL, "DELETE FROM test WHERE oid = ?", DB_INT, row) != 1) + { + return FALSE; + } + if (db->execute(db, NULL, "DROP TABLE test") < 0) + { + return FALSE; + } + db->destroy(db); + unlink(DBFILE); + return TRUE; +} + diff --git a/src/libcharon/plugins/unit_tester/unit_tester.c b/src/libcharon/plugins/unit_tester/unit_tester.c new file mode 100644 index 000000000..5f6f94e03 --- /dev/null +++ b/src/libcharon/plugins/unit_tester/unit_tester.c @@ -0,0 +1,116 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "unit_tester.h" + +#include <daemon.h> + +typedef struct private_unit_tester_t private_unit_tester_t; +typedef struct unit_test_t unit_test_t; +typedef enum test_status_t test_status_t; + +/** + * private data of unit_tester + */ +struct private_unit_tester_t { + + /** + * public functions + */ + unit_tester_t public; +}; + +struct unit_test_t { + + /** + * name of the test + */ + char *name; + + /** + * test function + */ + bool (*test)(void); + + /** + * run the test? + */ + bool enabled; +}; + +#undef DEFINE_TEST +#define DEFINE_TEST(name, function, enabled) bool function(); +#include <plugins/unit_tester/tests.h> +#undef DEFINE_TEST +#define DEFINE_TEST(name, function, enabled) {name, function, enabled}, +static unit_test_t tests[] = { +#include <plugins/unit_tester/tests.h> +}; + +static void run_tests(private_unit_tester_t *this) +{ + int i, run = 0, failed = 0, success = 0, skipped = 0; + + DBG1(DBG_CFG, "running unit tests, %d tests registered", + sizeof(tests)/sizeof(unit_test_t)); + + for (i = 0; i < sizeof(tests)/sizeof(unit_test_t); i++) + { + if (tests[i].enabled) + { + run++; + if (tests[i].test()) + { + DBG1(DBG_CFG, "test '%s' successful", tests[i].name); + success++; + } + else + { + DBG1(DBG_CFG, "test '%s' failed", tests[i].name); + failed++; + } + } + else + { + DBG1(DBG_CFG, "test '%s' disabled", tests[i].name); + skipped++; + } + } + DBG1(DBG_CFG, "%d/%d tests successful (%d failed, %d disabled)", + success, run, failed, skipped); +} + +/** + * Implementation of 2007_t.destroy + */ +static void destroy(private_unit_tester_t *this) +{ + free(this); +} + +/* + * see header file + */ +plugin_t *unit_tester_plugin_create() +{ + private_unit_tester_t *this = malloc_thing(private_unit_tester_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + run_tests(this); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/unit_tester/unit_tester.h b/src/libcharon/plugins/unit_tester/unit_tester.h new file mode 100644 index 000000000..08784f6f4 --- /dev/null +++ b/src/libcharon/plugins/unit_tester/unit_tester.h @@ -0,0 +1,44 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup unit_tester unit_tester + * @{ @ingroup cplugins + */ + +#ifndef UNIT_TESTER_H_ +#define UNIT_TESTER_H_ + +#include <plugins/plugin.h> + +typedef struct unit_tester_t unit_tester_t; + +/** + * Unit testing plugin. + * + * The unit testing plugin runs tests on plugin initialization. Tests are + * defined in tests.h using the DEFINE_TEST macro. Implementation of the + * tests is done in the tests folder. Each test has uses a function which + * returns TRUE for success or FALSE for failure. + */ +struct unit_tester_t { + + /** + * Implements the plugin interface. + */ + plugin_t plugin; +}; + +#endif /** UNIT_TESTER_H_ @}*/ diff --git a/src/libcharon/plugins/updown/Makefile.am b/src/libcharon/plugins/updown/Makefile.am new file mode 100644 index 000000000..312c8d7e8 --- /dev/null +++ b/src/libcharon/plugins/updown/Makefile.am @@ -0,0 +1,17 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-updown.la +else +plugin_LTLIBRARIES = libstrongswan-updown.la +endif + +libstrongswan_updown_la_SOURCES = \ + updown_plugin.h updown_plugin.c \ + updown_listener.h updown_listener.c + +libstrongswan_updown_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/updown/Makefile.in b/src/libcharon/plugins/updown/Makefile.in new file mode 100644 index 000000000..d3c509a32 --- /dev/null +++ b/src/libcharon/plugins/updown/Makefile.in @@ -0,0 +1,589 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src/libcharon/plugins/updown +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/config/libtool.m4 \ + $(top_srcdir)/m4/config/ltoptions.m4 \ + $(top_srcdir)/m4/config/ltsugar.m4 \ + $(top_srcdir)/m4/config/ltversion.m4 \ + $(top_srcdir)/m4/config/lt~obsolete.m4 \ + $(top_srcdir)/m4/macros/with.m4 \ + $(top_srcdir)/m4/macros/enable-disable.m4 \ + $(top_srcdir)/configure.in +am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ + $(ACLOCAL_M4) +mkinstalldirs = $(install_sh) -d +CONFIG_CLEAN_FILES = +CONFIG_CLEAN_VPATH_FILES = +am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; +am__vpath_adj = case $$p in \ + $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \ + *) f=$$p;; \ + esac; +am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`; +am__install_max = 40 +am__nobase_strip_setup = \ + srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'` +am__nobase_strip = \ + for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||" +am__nobase_list = $(am__nobase_strip_setup); \ + for p in $$list; do echo "$$p $$p"; done | \ + sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \ + $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \ + if (++n[$$2] == $(am__install_max)) \ + { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \ + END { for (dir in files) print dir, files[dir] }' +am__base_list = \ + sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \ + sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g' +am__installdirs = "$(DESTDIR)$(plugindir)" +LTLIBRARIES = $(noinst_LTLIBRARIES) $(plugin_LTLIBRARIES) +libstrongswan_updown_la_LIBADD = +am_libstrongswan_updown_la_OBJECTS = updown_plugin.lo \ + updown_listener.lo +libstrongswan_updown_la_OBJECTS = \ + $(am_libstrongswan_updown_la_OBJECTS) +libstrongswan_updown_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \ + $(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \ + $(libstrongswan_updown_la_LDFLAGS) $(LDFLAGS) -o $@ +@MONOLITHIC_FALSE@am_libstrongswan_updown_la_rpath = -rpath \ +@MONOLITHIC_FALSE@ $(plugindir) +@MONOLITHIC_TRUE@am_libstrongswan_updown_la_rpath = +DEFAULT_INCLUDES = -I.@am__isrc@ +depcomp = $(SHELL) $(top_srcdir)/depcomp +am__depfiles_maybe = depfiles +am__mv = mv -f +COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \ + $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) +LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ + --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \ + $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) 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mostlyclean-compile mostlyclean-generic mostlyclean-libtool \ + pdf pdf-am ps ps-am tags uninstall uninstall-am \ + uninstall-pluginLTLIBRARIES + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/libcharon/plugins/updown/updown_listener.c b/src/libcharon/plugins/updown/updown_listener.c new file mode 100644 index 000000000..5a6746f92 --- /dev/null +++ b/src/libcharon/plugins/updown/updown_listener.c @@ -0,0 +1,294 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#define _GNU_SOURCE +#include <stdio.h> + +#include "updown_listener.h" + +#include <daemon.h> +#include <config/child_cfg.h> + +typedef struct private_updown_listener_t private_updown_listener_t; + +/** + * Private data of an updown_listener_t object. + */ +struct private_updown_listener_t { + + /** + * Public updown_listener_t interface. + */ + updown_listener_t public; + + /** + * List of cached interface names + */ + linked_list_t *iface_cache; +}; + +typedef struct cache_entry_t cache_entry_t; + +/** + * Cache line in the interface name cache. + */ +struct cache_entry_t { + /** requid of the CHILD_SA */ + u_int32_t reqid; + /** cached interface name */ + char *iface; +}; + +/** + * Insert an interface name to the cache + */ +static void cache_iface(private_updown_listener_t *this, u_int32_t reqid, + char *iface) +{ + cache_entry_t *entry = malloc_thing(cache_entry_t); + + entry->reqid = reqid; + entry->iface = strdup(iface); + + this->iface_cache->insert_first(this->iface_cache, entry); +} + +/** + * Remove a cached interface name and return it. + */ +static char* uncache_iface(private_updown_listener_t *this, u_int32_t reqid) +{ + enumerator_t *enumerator; + cache_entry_t *entry; + char *iface = NULL; + + enumerator = this->iface_cache->create_enumerator(this->iface_cache); + while (enumerator->enumerate(enumerator, &entry)) + { + if (entry->reqid == reqid) + { + this->iface_cache->remove_at(this->iface_cache, enumerator); + iface = entry->iface; + free(entry); + break; + } + } + enumerator->destroy(enumerator); + return iface; +} + +METHOD(listener_t, child_updown, bool, + private_updown_listener_t *this, ike_sa_t *ike_sa, child_sa_t *child_sa, + bool up) +{ + traffic_selector_t *my_ts, *other_ts; + enumerator_t *enumerator; + child_cfg_t *config; + host_t *vip, *me, *other; + char *script; + + config = child_sa->get_config(child_sa); + vip = ike_sa->get_virtual_ip(ike_sa, TRUE); + script = config->get_updown(config); + me = ike_sa->get_my_host(ike_sa); + other = ike_sa->get_other_host(ike_sa); + + if (script == NULL) + { + return TRUE; + } + + enumerator = child_sa->create_policy_enumerator(child_sa); + while (enumerator->enumerate(enumerator, &my_ts, &other_ts)) + { + char command[1024]; + char *my_client, *other_client, *my_client_mask, *other_client_mask; + char *pos, *virtual_ip, *iface; + bool is_host, is_ipv6; + FILE *shell; + + /* get subnet/bits from string */ + if (asprintf(&my_client, "%R", my_ts) < 0) + { + my_client = NULL; + } + pos = strchr(my_client, '/'); + *pos = '\0'; + my_client_mask = pos + 1; + pos = strchr(my_client_mask, '['); + if (pos) + { + *pos = '\0'; + } + if (asprintf(&other_client, "%R", other_ts) < 0) + { + other_client = NULL; + } + pos = strchr(other_client, '/'); + *pos = '\0'; + other_client_mask = pos + 1; + pos = strchr(other_client_mask, '['); + if (pos) + { + *pos = '\0'; + } + + if (vip) + { + if (asprintf(&virtual_ip, "PLUTO_MY_SOURCEIP='%H' ", vip) < 0) + { + virtual_ip = NULL; + } + } + else + { + if (asprintf(&virtual_ip, "") < 0) + { + virtual_ip = NULL; + } + } + + if (up) + { + iface = charon->kernel_interface->get_interface( + charon->kernel_interface, me); + if (iface) + { + cache_iface(this, child_sa->get_reqid(child_sa), iface); + } + } + else + { + iface = uncache_iface(this, child_sa->get_reqid(child_sa)); + } + + /* determine IPv4/IPv6 and client/host situation */ + is_host = my_ts->is_host(my_ts, me); + is_ipv6 = is_host ? (me->get_family(me) == AF_INET6) : + (my_ts->get_type(my_ts) == TS_IPV6_ADDR_RANGE); + + /* build the command with all env variables. + * TODO: PLUTO_PEER_CA and PLUTO_NEXT_HOP are currently missing + */ + snprintf(command, sizeof(command), + "2>&1 " + "PLUTO_VERSION='1.1' " + "PLUTO_VERB='%s%s%s' " + "PLUTO_CONNECTION='%s' " + "PLUTO_INTERFACE='%s' " + "PLUTO_REQID='%u' " + "PLUTO_ME='%H' " + "PLUTO_MY_ID='%Y' " + "PLUTO_MY_CLIENT='%s/%s' " + "PLUTO_MY_CLIENT_NET='%s' " + "PLUTO_MY_CLIENT_MASK='%s' " + "PLUTO_MY_PORT='%u' " + "PLUTO_MY_PROTOCOL='%u' " + "PLUTO_PEER='%H' " + "PLUTO_PEER_ID='%Y' " + "PLUTO_PEER_CLIENT='%s/%s' " + "PLUTO_PEER_CLIENT_NET='%s' " + "PLUTO_PEER_CLIENT_MASK='%s' " + "PLUTO_PEER_PORT='%u' " + "PLUTO_PEER_PROTOCOL='%u' " + "%s" + "%s" + "%s", + up ? "up" : "down", + is_host ? "-host" : "-client", + is_ipv6 ? "-v6" : "", + config->get_name(config), + iface ? iface : "unknown", + child_sa->get_reqid(child_sa), + me, ike_sa->get_my_id(ike_sa), + my_client, my_client_mask, + my_client, my_client_mask, + my_ts->get_from_port(my_ts), + my_ts->get_protocol(my_ts), + other, ike_sa->get_other_id(ike_sa), + other_client, other_client_mask, + other_client, other_client_mask, + other_ts->get_from_port(other_ts), + other_ts->get_protocol(other_ts), + virtual_ip, + config->get_hostaccess(config) ? "PLUTO_HOST_ACCESS='1' " : "", + script); + free(my_client); + free(other_client); + free(virtual_ip); + free(iface); + + DBG3(DBG_CHD, "running updown script: %s", command); + shell = popen(command, "r"); + + if (shell == NULL) + { + DBG1(DBG_CHD, "could not execute updown script '%s'", script); + return TRUE; + } + + while (TRUE) + { + char resp[128]; + + if (fgets(resp, sizeof(resp), shell) == NULL) + { + if (ferror(shell)) + { + DBG1(DBG_CHD, "error reading output from updown script"); + } + break; + } + else + { + char *e = resp + strlen(resp); + if (e > resp && e[-1] == '\n') + { /* trim trailing '\n' */ + e[-1] = '\0'; + } + DBG1(DBG_CHD, "updown: %s", resp); + } + } + pclose(shell); + } + enumerator->destroy(enumerator); + return TRUE; +} + +METHOD(updown_listener_t, destroy, void, + private_updown_listener_t *this) +{ + this->iface_cache->destroy(this->iface_cache); + free(this); +} + +/** + * See header + */ +updown_listener_t *updown_listener_create() +{ + private_updown_listener_t *this; + + INIT(this, + .public = { + .listener.child_updown = _child_updown, + .destroy = _destroy, + }, + .iface_cache = linked_list_create(), + ); + + return &this->public; +} + diff --git a/src/libcharon/plugins/updown/updown_listener.h b/src/libcharon/plugins/updown/updown_listener.h new file mode 100644 index 000000000..5b866c4e5 --- /dev/null +++ b/src/libcharon/plugins/updown/updown_listener.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup updown_listener updown_listener + * @{ @ingroup updown + */ + +#ifndef UPDOWN_LISTENER_H_ +#define UPDOWN_LISTENER_H_ + +#include <bus/bus.h> + +typedef struct updown_listener_t updown_listener_t; + +/** + * Listener which invokes the scripts on CHILD_SA up/down. + */ +struct updown_listener_t { + + /** + * Implements listener_t. + */ + listener_t listener; + + /** + * Destroy a updown_listener_t. + */ + void (*destroy)(updown_listener_t *this); +}; + +/** + * Create a updown_listener instance. + */ +updown_listener_t *updown_listener_create(); + +#endif /** UPDOWN_LISTENER_H_ @}*/ diff --git a/src/libcharon/plugins/updown/updown_plugin.c b/src/libcharon/plugins/updown/updown_plugin.c new file mode 100644 index 000000000..9d0591e62 --- /dev/null +++ b/src/libcharon/plugins/updown/updown_plugin.c @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "updown_plugin.h" +#include "updown_listener.h" + +#include <daemon.h> + +typedef struct private_updown_plugin_t private_updown_plugin_t; + +/** + * private data of updown plugin + */ +struct private_updown_plugin_t { + + /** + * implements plugin interface + */ + updown_plugin_t public; + + /** + * Listener interface, listens to CHILD_SA state changes + */ + updown_listener_t *listener; +}; + +/** + * Implementation of plugin_t.destroy + */ +static void destroy(private_updown_plugin_t *this) +{ + charon->bus->remove_listener(charon->bus, &this->listener->listener); + this->listener->destroy(this->listener); + free(this); +} + +/* + * see header file + */ +plugin_t *updown_plugin_create() +{ + private_updown_plugin_t *this = malloc_thing(private_updown_plugin_t); + + this->public.plugin.destroy = (void(*)(plugin_t*))destroy; + + this->listener = updown_listener_create(); + charon->bus->add_listener(charon->bus, &this->listener->listener); + + return &this->public.plugin; +} + diff --git a/src/libcharon/plugins/updown/updown_plugin.h b/src/libcharon/plugins/updown/updown_plugin.h new file mode 100644 index 000000000..abcb953a0 --- /dev/null +++ b/src/libcharon/plugins/updown/updown_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +/** + * @defgroup updown updown + * @ingroup cplugins + * + * @defgroup updown_plugin updown_plugin + * @{ @ingroup updown + */ + +#ifndef UPDOWN_PLUGIN_H_ +#define UPDOWN_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct updown_plugin_t updown_plugin_t; + +/** + * Updown firewall script invocation plugin, compatible to pluto ones. + */ +struct updown_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** UPDOWN_PLUGIN_H_ @}*/ |