diff options
Diffstat (limited to 'src/libcharon/plugins/attr')
| -rw-r--r-- | src/libcharon/plugins/attr/Makefile.am | 19 | ||||
| -rw-r--r-- | src/libcharon/plugins/attr/Makefile.in | 777 | ||||
| -rw-r--r-- | src/libcharon/plugins/attr/attr_plugin.c | 109 | ||||
| -rw-r--r-- | src/libcharon/plugins/attr/attr_plugin.h | 42 | ||||
| -rw-r--r-- | src/libcharon/plugins/attr/attr_provider.c | 329 | ||||
| -rw-r--r-- | src/libcharon/plugins/attr/attr_provider.h | 54 |
6 files changed, 1330 insertions, 0 deletions
diff --git a/src/libcharon/plugins/attr/Makefile.am b/src/libcharon/plugins/attr/Makefile.am new file mode 100644 index 000000000..6bc7e77d8 --- /dev/null +++ b/src/libcharon/plugins/attr/Makefile.am @@ -0,0 +1,19 @@ +AM_CPPFLAGS = \ + -I$(top_srcdir)/src/libstrongswan \ + -I$(top_srcdir)/src/libhydra \ + -I$(top_srcdir)/src/libcharon + +AM_CFLAGS = \ + $(PLUGIN_CFLAGS) + +if MONOLITHIC +noinst_LTLIBRARIES = libstrongswan-attr.la +else +plugin_LTLIBRARIES = libstrongswan-attr.la +endif + +libstrongswan_attr_la_SOURCES = \ + attr_plugin.h attr_plugin.c \ + attr_provider.h attr_provider.c + +libstrongswan_attr_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/attr/Makefile.in b/src/libcharon/plugins/attr/Makefile.in new file mode 100644 index 000000000..486b3c0b0 --- /dev/null +++ b/src/libcharon/plugins/attr/Makefile.in @@ -0,0 +1,777 @@ +# Makefile.in generated by automake 1.14.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2013 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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a/src/libcharon/plugins/attr/attr_plugin.c b/src/libcharon/plugins/attr/attr_plugin.c new file mode 100644 index 000000000..9b15c3cc9 --- /dev/null +++ b/src/libcharon/plugins/attr/attr_plugin.c @@ -0,0 +1,109 @@ +/* + * 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 "attr_plugin.h" +#include "attr_provider.h" + +#include <daemon.h> + +typedef struct private_attr_plugin_t private_attr_plugin_t; + +/** + * private data of attr plugin + */ +struct private_attr_plugin_t { + + /** + * implements plugin interface + */ + attr_plugin_t public; + + /** + * CFG attributes provider + */ + attr_provider_t *provider; +}; + +METHOD(plugin_t, get_name, char*, + private_attr_plugin_t *this) +{ + return "attr"; +} + +/** + * Register provider + */ +static bool plugin_cb(private_attr_plugin_t *this, + plugin_feature_t *feature, bool reg, void *cb_data) +{ + if (reg) + { + charon->attributes->add_provider(charon->attributes, + &this->provider->provider); + } + else + { + charon->attributes->remove_provider(charon->attributes, + &this->provider->provider); + } + return TRUE; +} + +METHOD(plugin_t, get_features, int, + private_attr_plugin_t *this, plugin_feature_t *features[]) +{ + static plugin_feature_t f[] = { + PLUGIN_CALLBACK((plugin_feature_callback_t)plugin_cb, NULL), + PLUGIN_PROVIDE(CUSTOM, "attr"), + }; + *features = f; + return countof(f); +} + +METHOD(plugin_t, reload, bool, + private_attr_plugin_t *this) +{ + this->provider->reload(this->provider); + return TRUE; +} + +METHOD(plugin_t, destroy, void, + private_attr_plugin_t *this) +{ + this->provider->destroy(this->provider); + free(this); +} + +/* + * see header file + */ +plugin_t *attr_plugin_create() +{ + private_attr_plugin_t *this; + + INIT(this, + .public = { + .plugin = { + .get_name = _get_name, + .get_features = _get_features, + .reload = _reload, + .destroy = _destroy, + }, + }, + .provider = attr_provider_create(), + ); + + return &this->public.plugin; +} diff --git a/src/libcharon/plugins/attr/attr_plugin.h b/src/libcharon/plugins/attr/attr_plugin.h new file mode 100644 index 000000000..0c6eebfa7 --- /dev/null +++ b/src/libcharon/plugins/attr/attr_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 attr attr + * @ingroup cplugins + * + * @defgroup attr_plugin attr_plugin + * @{ @ingroup attr + */ + +#ifndef ATTR_PLUGIN_H_ +#define ATTR_PLUGIN_H_ + +#include <plugins/plugin.h> + +typedef struct attr_plugin_t attr_plugin_t; + +/** + * Plugin providing configuration attribute through strongswan.conf. + */ +struct attr_plugin_t { + + /** + * implements plugin interface + */ + plugin_t plugin; +}; + +#endif /** ATTR_PLUGIN_H_ @}*/ diff --git a/src/libcharon/plugins/attr/attr_provider.c b/src/libcharon/plugins/attr/attr_provider.c new file mode 100644 index 000000000..cac0ae4bf --- /dev/null +++ b/src/libcharon/plugins/attr/attr_provider.c @@ -0,0 +1,329 @@ +/* + * Copyright (C) 2010 Tobias Brunner + * 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 "attr_provider.h" + +#include <time.h> + +#include <daemon.h> +#include <utils/debug.h> +#include <collections/linked_list.h> +#include <threading/rwlock.h> + +#define SERVER_MAX 2 + +typedef struct private_attr_provider_t private_attr_provider_t; +typedef struct attribute_entry_t attribute_entry_t; + +/** + * private data of attr_provider + */ +struct private_attr_provider_t { + + /** + * public functions + */ + attr_provider_t public; + + /** + * List of attributes, attribute_entry_t + */ + linked_list_t *attributes; + + /** + * Lock for attribute list + */ + rwlock_t *lock; +}; + +struct attribute_entry_t { + /** type of attribute */ + configuration_attribute_type_t type; + /** attribute value */ + chunk_t value; +}; + +/** + * Destroy an entry + */ +static void attribute_destroy(attribute_entry_t *this) +{ + free(this->value.ptr); + free(this); +} + +/** + * convert enumerator value from attribute_entry + */ +static bool attr_enum_filter(void *null, attribute_entry_t **in, + configuration_attribute_type_t *type, void* none, chunk_t *value) +{ + *type = (*in)->type; + *value = (*in)->value; + return TRUE; +} + +METHOD(attribute_provider_t, create_attribute_enumerator, enumerator_t*, + private_attr_provider_t *this, linked_list_t *pools, + ike_sa_t *ike_sa, linked_list_t *vips) +{ + if (vips->get_count(vips)) + { + this->lock->read_lock(this->lock); + return enumerator_create_filter( + this->attributes->create_enumerator(this->attributes), + (void*)attr_enum_filter, this->lock, (void*)this->lock->unlock); + } + return enumerator_create_empty(); +} + +METHOD(attr_provider_t, destroy, void, + private_attr_provider_t *this) +{ + this->attributes->destroy_function(this->attributes, + (void*)attribute_destroy); + this->lock->destroy(this->lock); + free(this); +} + +/** + * Add an attribute entry to the list + */ +static void add_legacy_entry(private_attr_provider_t *this, char *key, int nr, + configuration_attribute_type_t type) +{ + attribute_entry_t *entry; + host_t *host; + char *str; + + str = lib->settings->get_str(lib->settings, "%s.%s%d", NULL, lib->ns, + key, nr); + if (str) + { + host = host_create_from_string(str, 0); + if (host) + { + entry = malloc_thing(attribute_entry_t); + + if (host->get_family(host) == AF_INET6) + { + switch (type) + { + case INTERNAL_IP4_DNS: + type = INTERNAL_IP6_DNS; + break; + case INTERNAL_IP4_NBNS: + type = INTERNAL_IP6_NBNS; + break; + default: + break; + } + } + entry->type = type; + entry->value = chunk_clone(host->get_address(host)); + host->destroy(host); + DBG2(DBG_CFG, "loaded legacy entry attribute %N: %#B", + configuration_attribute_type_names, entry->type, &entry->value); + this->attributes->insert_last(this->attributes, entry); + } + } +} + +/** + * Key to attribute type mappings, for v4 and v6 attributes + */ +typedef struct { + char *name; + configuration_attribute_type_t v4; + configuration_attribute_type_t v6; +} attribute_type_key_t; + +static attribute_type_key_t keys[] = { + {"address", INTERNAL_IP4_ADDRESS, INTERNAL_IP6_ADDRESS}, + {"dns", INTERNAL_IP4_DNS, INTERNAL_IP6_DNS}, + {"nbns", INTERNAL_IP4_NBNS, INTERNAL_IP6_NBNS}, + {"dhcp", INTERNAL_IP4_DHCP, INTERNAL_IP6_DHCP}, + {"netmask", INTERNAL_IP4_NETMASK, INTERNAL_IP6_NETMASK}, + {"server", INTERNAL_IP4_SERVER, INTERNAL_IP6_SERVER}, + {"subnet", INTERNAL_IP4_SUBNET, INTERNAL_IP6_SUBNET}, + {"split-include", UNITY_SPLIT_INCLUDE, UNITY_SPLIT_INCLUDE}, + {"split-exclude", UNITY_LOCAL_LAN, UNITY_LOCAL_LAN}, +}; + +/** + * Load (numerical) entries from the plugins.attr namespace + */ +static void load_entries(private_attr_provider_t *this) +{ + enumerator_t *enumerator, *tokens; + char *key, *value, *token; + int i; + + for (i = 1; i <= SERVER_MAX; i++) + { + add_legacy_entry(this, "dns", i, INTERNAL_IP4_DNS); + add_legacy_entry(this, "nbns", i, INTERNAL_IP4_NBNS); + } + + enumerator = lib->settings->create_key_value_enumerator(lib->settings, + "%s.plugins.attr", lib->ns); + while (enumerator->enumerate(enumerator, &key, &value)) + { + configuration_attribute_type_t type; + attribute_type_key_t *mapped = NULL; + attribute_entry_t *entry; + chunk_t data; + host_t *host; + char *pos; + int i, mask = -1, family; + + if (streq(key, "load")) + { + continue; + } + type = atoi(key); + if (!type) + { + for (i = 0; i < countof(keys); i++) + { + if (streq(key, keys[i].name)) + { + mapped = &keys[i]; + break; + } + } + if (!mapped) + { + DBG1(DBG_CFG, "mapping attribute type %s failed", key); + continue; + } + } + tokens = enumerator_create_token(value, ",", " "); + while (tokens->enumerate(tokens, &token)) + { + pos = strchr(token, '/'); + if (pos) + { + *(pos++) = '\0'; + mask = atoi(pos); + } + host = host_create_from_string(token, 0); + if (!host) + { + if (mapped) + { + DBG1(DBG_CFG, "invalid host in key %s: %s", key, token); + continue; + } + /* store numeric attributes that are no IP addresses as strings */ + data = chunk_clone(chunk_from_str(token)); + } + else + { + family = host->get_family(host); + if (mask == -1) + { + data = chunk_clone(host->get_address(host)); + } + else + { + if (family == AF_INET) + { /* IPv4 attributes contain a subnet mask */ + u_int32_t netmask = 0; + + if (mask) + { /* shifting u_int32_t by 32 or more is undefined */ + mask = 32 - mask; + netmask = htonl((0xFFFFFFFF >> mask) << mask); + } + data = chunk_cat("cc", host->get_address(host), + chunk_from_thing(netmask)); + } + else + { /* IPv6 addresses the prefix only */ + data = chunk_cat("cc", host->get_address(host), + chunk_from_chars(mask)); + } + } + host->destroy(host); + if (mapped) + { + switch (family) + { + case AF_INET: + type = mapped->v4; + break; + case AF_INET6: + type = mapped->v6; + break; + } + } + } + INIT(entry, + .type = type, + .value = data, + ); + DBG2(DBG_CFG, "loaded attribute %N: %#B", + configuration_attribute_type_names, entry->type, &entry->value); + this->attributes->insert_last(this->attributes, entry); + } + tokens->destroy(tokens); + } + enumerator->destroy(enumerator); +} + +METHOD(attr_provider_t, reload, void, + private_attr_provider_t *this) +{ + this->lock->write_lock(this->lock); + + this->attributes->destroy_function(this->attributes, (void*)attribute_destroy); + this->attributes = linked_list_create(); + + load_entries(this); + + DBG1(DBG_CFG, "loaded %d entr%s for attr plugin configuration", + this->attributes->get_count(this->attributes), + this->attributes->get_count(this->attributes) == 1 ? "y" : "ies"); + + this->lock->unlock(this->lock); +} + +/* + * see header file + */ +attr_provider_t *attr_provider_create(database_t *db) +{ + private_attr_provider_t *this; + + INIT(this, + .public = { + .provider = { + .acquire_address = (void*)return_null, + .release_address = (void*)return_false, + .create_attribute_enumerator = _create_attribute_enumerator, + }, + .reload = _reload, + .destroy = _destroy, + }, + .attributes = linked_list_create(), + .lock = rwlock_create(RWLOCK_TYPE_DEFAULT), + ); + + load_entries(this); + + return &this->public; +} diff --git a/src/libcharon/plugins/attr/attr_provider.h b/src/libcharon/plugins/attr/attr_provider.h new file mode 100644 index 000000000..17db30408 --- /dev/null +++ b/src/libcharon/plugins/attr/attr_provider.h @@ -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. + */ + +/** + * @defgroup attr_provider attr_provider + * @{ @ingroup attr + */ + +#ifndef ATTR_PROVIDER_H_ +#define ATTR_PROVIDER_H_ + +#include <attributes/attribute_provider.h> + +typedef struct attr_provider_t attr_provider_t; + +/** + * Provide configuration attributes through static strongswan.conf definition. + */ +struct attr_provider_t { + + /** + * Implements attribute provider interface + */ + attribute_provider_t provider; + + /** + * Reload configuration from strongswan.conf. + */ + void (*reload)(attr_provider_t *this); + + /** + * Destroy a attr_provider instance. + */ + void (*destroy)(attr_provider_t *this); +}; + +/** + * Create a attr_provider instance. + */ +attr_provider_t *attr_provider_create(); + +#endif /** ATTR_PROVIDER @}*/ |