diff options
Diffstat (limited to 'src/libcharon/plugins/radattr')
| -rw-r--r-- | src/libcharon/plugins/radattr/Makefile.am | 17 | ||||
| -rw-r--r-- | src/libcharon/plugins/radattr/Makefile.in | 616 | ||||
| -rw-r--r-- | src/libcharon/plugins/radattr/radattr_listener.c | 221 | ||||
| -rw-r--r-- | src/libcharon/plugins/radattr/radattr_listener.h | 49 | ||||
| -rw-r--r-- | src/libcharon/plugins/radattr/radattr_plugin.c | 75 | ||||
| -rw-r--r-- | src/libcharon/plugins/radattr/radattr_plugin.h | 42 |
6 files changed, 1020 insertions, 0 deletions
diff --git a/src/libcharon/plugins/radattr/Makefile.am b/src/libcharon/plugins/radattr/Makefile.am new file mode 100644 index 000000000..0ea8df5d1 --- /dev/null +++ b/src/libcharon/plugins/radattr/Makefile.am @@ -0,0 +1,17 @@ + +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon -I$(top_srcdir)/src/libradius + +AM_CFLAGS = -rdynamic + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-radattr.la +else +libstrongswan_radattr_la_LIBADD = $(top_builddir)/src/libradius/libradius.la +plugin_LTLIBRARIES = libstrongswan-radattr.la +endif + +libstrongswan_radattr_la_SOURCES = radattr_plugin.h radattr_plugin.c \ + radattr_listener.h radattr_listener.c + +libstrongswan_radattr_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/radattr/Makefile.in b/src/libcharon/plugins/radattr/Makefile.in new file mode 100644 index 000000000..ecea0df16 --- /dev/null +++ b/src/libcharon/plugins/radattr/Makefile.in @@ -0,0 +1,616 @@ +# Makefile.in generated by automake 1.11.1 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/radattr +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)/m4/macros/add-plugin.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)" | 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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/radattr/radattr_listener.c b/src/libcharon/plugins/radattr/radattr_listener.c new file mode 100644 index 000000000..94b718a1b --- /dev/null +++ b/src/libcharon/plugins/radattr/radattr_listener.c @@ -0,0 +1,221 @@ +/* + * Copyright (C) 2012 Martin Willi + * Copyright (C) 2012 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 "radattr_listener.h" + +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/mman.h> +#include <errno.h> + +#include <daemon.h> + +#include <radius_message.h> + +/** + * Maximum size of an attribute to add + */ +#define MAX_ATTR_SIZE 1024 + +typedef struct private_radattr_listener_t private_radattr_listener_t; + +/** + * Private data of an radattr_listener_t object. + */ +struct private_radattr_listener_t { + + /** + * Public radattr_listener_t interface. + */ + radattr_listener_t public; + + /** + * Directory to look for attribute files + */ + char *dir; + + /** + * IKE_AUTH message ID to attribute + */ + int mid; +}; + +/** + * Print RADIUS attributes found in IKE message notifies + */ +static void print_radius_attributes(private_radattr_listener_t *this, + message_t *message) +{ + radius_attribute_type_t type; + enumerator_t *enumerator; + notify_payload_t *notify; + payload_t *payload; + chunk_t data; + + enumerator = message->create_payload_enumerator(message); + while (enumerator->enumerate(enumerator, &payload)) + { + if (payload->get_type(payload) == NOTIFY) + { + notify = (notify_payload_t*)payload; + if (notify->get_notify_type(notify) == RADIUS_ATTRIBUTE) + { + data = notify->get_notification_data(notify); + if (data.len >= 2) + { + type = data.ptr[0]; + data = chunk_skip(data, 2); + if (chunk_printable(data, NULL, 0)) + { + DBG1(DBG_IKE, "received RADIUS %N: %.*s", + radius_attribute_type_names, type, + (int)data.len, data.ptr); + } + else + { + DBG1(DBG_IKE, "received RADIUS %N: %#B", + radius_attribute_type_names, type, &data); + + } + } + } + } + } + enumerator->destroy(enumerator); +} + +/** + * Add a RADIUS attribute from a client-ID specific file to an IKE message + */ +static void add_radius_attribute(private_radattr_listener_t *this, + ike_sa_t *ike_sa, message_t *message) +{ + if (this->dir && + (this->mid == -1 || message->get_message_id(message) == this->mid)) + { + identification_t *id; + auth_cfg_t *auth; + char path[PATH_MAX]; + chunk_t data; + struct stat sb; + void *addr; + int fd; + + auth = ike_sa->get_auth_cfg(ike_sa, TRUE); + id = auth->get(auth, AUTH_RULE_EAP_IDENTITY); + if (!id) + { + id = ike_sa->get_my_id(ike_sa); + } + + snprintf(path, sizeof(path), "%s/%Y", this->dir, id); + fd = open(path, O_RDONLY); + if (fd != -1) + { + if (fstat(fd, &sb) != -1) + { + if (sb.st_size <= MAX_ATTR_SIZE) + { + addr = mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0); + if (addr != MAP_FAILED) + { + data = chunk_create(addr, sb.st_size); + if (data.len >= 2) + { + DBG1(DBG_CFG, "adding RADIUS %N attribute", + radius_attribute_type_names, data.ptr[0]); + message->add_notify(message, FALSE, + RADIUS_ATTRIBUTE, data); + } + munmap(addr, sb.st_size); + } + else + { + DBG1(DBG_CFG, "mapping RADIUS attribute '%s' failed: %s", + path, strerror(errno)); + } + } + else + { + DBG1(DBG_CFG, "RADIUS attribute '%s' exceeds size limit", + path); + } + } + else + { + DBG1(DBG_CFG, "fstat RADIUS attribute '%s' failed: %s", + path, strerror(errno)); + } + close(fd); + } + else + { + DBG1(DBG_CFG, "reading RADIUS attribute '%s' failed: %s", + path, strerror(errno)); + } + } +} + +METHOD(listener_t, message, bool, + private_radattr_listener_t *this, + ike_sa_t *ike_sa, message_t *message, bool incoming) +{ + if (ike_sa->supports_extension(ike_sa, EXT_STRONGSWAN) && + message->get_exchange_type(message) == IKE_AUTH && + message->get_payload(message, EXTENSIBLE_AUTHENTICATION)) + { + if (incoming) + { + print_radius_attributes(this, message); + } + else + { + add_radius_attribute(this, ike_sa, message); + } + } + return TRUE; +} + + +METHOD(radattr_listener_t, destroy, void, + private_radattr_listener_t *this) +{ + free(this); +} + +/** + * See header + */ +radattr_listener_t *radattr_listener_create() +{ + private_radattr_listener_t *this; + + INIT(this, + .public = { + .listener = { + .message = _message, + }, + .destroy = _destroy, + }, + .dir = lib->settings->get_str(lib->settings, + "charon.plugins.radattr.dir", NULL), + .mid = lib->settings->get_int(lib->settings, + "charon.plugins.radattr.message_id", -1), + ); + + return &this->public; +} diff --git a/src/libcharon/plugins/radattr/radattr_listener.h b/src/libcharon/plugins/radattr/radattr_listener.h new file mode 100644 index 000000000..e61c441bf --- /dev/null +++ b/src/libcharon/plugins/radattr/radattr_listener.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2012 Martin Willi + * Copyright (C) 2012 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 radattr_listener radattr_listener + * @{ @ingroup radattr + */ + +#ifndef RADATTR_LISTENER_H_ +#define RADATTR_LISTENER_H_ + +#include <bus/listeners/listener.h> + +typedef struct radattr_listener_t radattr_listener_t; + +/** + * Output received RADIUS attributes, inject custom attributes. + */ +struct radattr_listener_t { + + /** + * Implements a listener. + */ + listener_t listener; + + /** + * Destroy a radattr_listener_t. + */ + void (*destroy)(radattr_listener_t *this); +}; + +/** + * Create a radattr_listener instance. + */ +radattr_listener_t *radattr_listener_create(); + +#endif /** RADATTR_LISTENER_H_ @}*/ diff --git a/src/libcharon/plugins/radattr/radattr_plugin.c b/src/libcharon/plugins/radattr/radattr_plugin.c new file mode 100644 index 000000000..85ea326ac --- /dev/null +++ b/src/libcharon/plugins/radattr/radattr_plugin.c @@ -0,0 +1,75 @@ +/* + * Copyright (C) 2012 Martin Willi + * Copyright (C) 2012 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 "radattr_plugin.h" + +#include "radattr_listener.h" + +#include <daemon.h> + +typedef struct private_radattr_plugin_t private_radattr_plugin_t; + +/** + * private data of radattr plugin + */ +struct private_radattr_plugin_t { + + /** + * implements plugin interface + */ + radattr_plugin_t public; + + /** + * Listener acting on messages + */ + radattr_listener_t *listener; +}; + +METHOD(plugin_t, get_name, char*, + private_radattr_plugin_t *this) +{ + return "radattr"; +} + +METHOD(plugin_t, destroy, void, + private_radattr_plugin_t *this) +{ + charon->bus->remove_listener(charon->bus, &this->listener->listener); + this->listener->destroy(this->listener); + free(this); +} + +/** + * Plugin constructor + */ +plugin_t *radattr_plugin_create() +{ + private_radattr_plugin_t *this; + + INIT(this, + .public = { + .plugin = { + .get_name = _get_name, + .reload = (void*)return_false, + .destroy = _destroy, + }, + }, + .listener = radattr_listener_create(), + ); + + charon->bus->add_listener(charon->bus, &this->listener->listener); + + return &this->public.plugin; +} diff --git a/src/libcharon/plugins/radattr/radattr_plugin.h b/src/libcharon/plugins/radattr/radattr_plugin.h new file mode 100644 index 000000000..c3bad5a3a --- /dev/null +++ b/src/libcharon/plugins/radattr/radattr_plugin.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2012 Martin Willi + * Copyright (C) 2012 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 radattr radattr + * @ingroup cplugins + * + * @defgroup radattr_plugin radattr_plugin + * @{ @ingroup radattr + */ + +#ifndef RADATTR_PLUGIN_H_ +#define RADATTR_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct radattr_plugin_t radattr_plugin_t; + +/** + * Plugin to inject/process custom RADIUS attributes. + */ +struct radattr_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** RADATTR_PLUGIN_H_ @}*/ |