diff options
Diffstat (limited to 'src/libcharon/plugins/tnc_imv')
| -rw-r--r-- | src/libcharon/plugins/tnc_imv/Makefile.am | 8 | ||||
| -rw-r--r-- | src/libcharon/plugins/tnc_imv/Makefile.in | 21 | ||||
| -rw-r--r-- | src/libcharon/plugins/tnc_imv/tnc_imv.c | 208 | ||||
| -rw-r--r-- | src/libcharon/plugins/tnc_imv/tnc_imv.h | 36 | ||||
| -rw-r--r-- | src/libcharon/plugins/tnc_imv/tnc_imv_bind_function.c | 137 | ||||
| -rw-r--r-- | src/libcharon/plugins/tnc_imv/tnc_imv_manager.c | 295 | ||||
| -rw-r--r-- | src/libcharon/plugins/tnc_imv/tnc_imv_manager.h | 32 | ||||
| -rw-r--r-- | src/libcharon/plugins/tnc_imv/tnc_imv_plugin.c | 137 | ||||
| -rw-r--r-- | src/libcharon/plugins/tnc_imv/tnc_imv_recommendations.c | 415 | ||||
| -rw-r--r-- | src/libcharon/plugins/tnc_imv/tnc_imv_recommendations.h | 33 |
10 files changed, 1306 insertions, 16 deletions
diff --git a/src/libcharon/plugins/tnc_imv/Makefile.am b/src/libcharon/plugins/tnc_imv/Makefile.am index 9c3b47364..3ba283bb7 100644 --- a/src/libcharon/plugins/tnc_imv/Makefile.am +++ b/src/libcharon/plugins/tnc_imv/Makefile.am @@ -1,11 +1,9 @@ INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ - -I$(top_srcdir)/src/libcharon `xml2-config --cflags` + -I$(top_srcdir)/src/libcharon AM_CFLAGS = -rdynamic -libstrongswan_tnc_imv_la_LIBADD = -ltnc - if MONOLITHIC noinst_LTLIBRARIES = libstrongswan-tnc-imv.la else @@ -13,7 +11,9 @@ plugin_LTLIBRARIES = libstrongswan-tnc-imv.la endif libstrongswan_tnc_imv_la_SOURCES = \ - tnc_imv_plugin.h tnc_imv_plugin.c + tnc_imv_plugin.h tnc_imv_plugin.c tnc_imv.h tnc_imv.c \ + tnc_imv_manager.h tnc_imv_manager.c tnc_imv_bind_function.c \ + tnc_imv_recommendations.h tnc_imv_recommendations.c libstrongswan_tnc_imv_la_LDFLAGS = -module -avoid-version diff --git a/src/libcharon/plugins/tnc_imv/Makefile.in b/src/libcharon/plugins/tnc_imv/Makefile.in index f89b5e03b..0324d2eb9 100644 --- a/src/libcharon/plugins/tnc_imv/Makefile.in +++ b/src/libcharon/plugins/tnc_imv/Makefile.in @@ -74,8 +74,10 @@ am__base_list = \ sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g' am__installdirs = "$(DESTDIR)$(plugindir)" LTLIBRARIES = $(noinst_LTLIBRARIES) $(plugin_LTLIBRARIES) -libstrongswan_tnc_imv_la_DEPENDENCIES = -am_libstrongswan_tnc_imv_la_OBJECTS = tnc_imv_plugin.lo +libstrongswan_tnc_imv_la_LIBADD = +am_libstrongswan_tnc_imv_la_OBJECTS = tnc_imv_plugin.lo tnc_imv.lo \ + tnc_imv_manager.lo tnc_imv_bind_function.lo \ + tnc_imv_recommendations.lo libstrongswan_tnc_imv_la_OBJECTS = \ $(am_libstrongswan_tnc_imv_la_OBJECTS) libstrongswan_tnc_imv_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \ @@ -221,9 +223,7 @@ includedir = @includedir@ infodir = @infodir@ install_sh = @install_sh@ ipsecdir = @ipsecdir@ -ipsecgid = @ipsecgid@ ipsecgroup = @ipsecgroup@ -ipsecuid = @ipsecuid@ ipsecuser = @ipsecuser@ libcharon_plugins = @libcharon_plugins@ libdir = @libdir@ @@ -262,6 +262,8 @@ sbindir = @sbindir@ scepclient_plugins = @scepclient_plugins@ scripts_plugins = @scripts_plugins@ sharedstatedir = @sharedstatedir@ +soup_CFLAGS = @soup_CFLAGS@ +soup_LIBS = @soup_LIBS@ srcdir = @srcdir@ strongswan_conf = @strongswan_conf@ sysconfdir = @sysconfdir@ @@ -273,14 +275,15 @@ urandom_device = @urandom_device@ xml_CFLAGS = @xml_CFLAGS@ xml_LIBS = @xml_LIBS@ INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \ - -I$(top_srcdir)/src/libcharon `xml2-config --cflags` + -I$(top_srcdir)/src/libcharon AM_CFLAGS = -rdynamic -libstrongswan_tnc_imv_la_LIBADD = -ltnc @MONOLITHIC_TRUE@noinst_LTLIBRARIES = libstrongswan-tnc-imv.la @MONOLITHIC_FALSE@plugin_LTLIBRARIES = libstrongswan-tnc-imv.la libstrongswan_tnc_imv_la_SOURCES = \ - tnc_imv_plugin.h tnc_imv_plugin.c + tnc_imv_plugin.h tnc_imv_plugin.c tnc_imv.h tnc_imv.c \ + tnc_imv_manager.h tnc_imv_manager.c tnc_imv_bind_function.c \ + tnc_imv_recommendations.h tnc_imv_recommendations.c libstrongswan_tnc_imv_la_LDFLAGS = -module -avoid-version all: all-am @@ -366,7 +369,11 @@ mostlyclean-compile: distclean-compile: -rm -f *.tab.c +@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tnc_imv.Plo@am__quote@ +@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tnc_imv_bind_function.Plo@am__quote@ +@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tnc_imv_manager.Plo@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tnc_imv_plugin.Plo@am__quote@ +@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tnc_imv_recommendations.Plo@am__quote@ .c.o: @am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $< diff --git a/src/libcharon/plugins/tnc_imv/tnc_imv.c b/src/libcharon/plugins/tnc_imv/tnc_imv.c new file mode 100644 index 000000000..f88b645d6 --- /dev/null +++ b/src/libcharon/plugins/tnc_imv/tnc_imv.c @@ -0,0 +1,208 @@ +/* + * Copyright (C) 2006 Mike McCauley + * Copyright (C) 2010 Andreas Steffen, HSR 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 "tnc_imv.h" + +#include <dlfcn.h> + +#include <debug.h> +#include <library.h> + +typedef struct private_tnc_imv_t private_tnc_imv_t; + +/** + * Private data of an imv_t object. + */ +struct private_tnc_imv_t { + + /** + * Public members of imv_t. + */ + imv_t public; + + /** + * Path of loaded IMV + */ + char *path; + + /** + * Name of loaded IMV + */ + char *name; + + /** + * Handle of loaded IMV + */ + void *handle; + + /** + * ID of loaded IMV + */ + TNC_IMVID id; + + /** + * List of message types supported by IMC + */ + TNC_MessageTypeList supported_types; + + /** + * Number of supported message types + */ + TNC_UInt32 type_count; +}; + +METHOD(imv_t, set_id, void, + private_tnc_imv_t *this, TNC_IMVID id) +{ + this->id = id; +} + +METHOD(imv_t, get_id, TNC_IMVID, + private_tnc_imv_t *this) +{ + return this->id; +} + +METHOD(imv_t, get_name, char*, + private_tnc_imv_t *this) +{ + return this->name; +} + +METHOD(imv_t, set_message_types, void, + private_tnc_imv_t *this, TNC_MessageTypeList supported_types, + TNC_UInt32 type_count) +{ + /* Free an existing MessageType list */ + free(this->supported_types); + this->supported_types = NULL; + + /* Store the new MessageType list */ + this->type_count = type_count; + if (type_count && supported_types) + { + size_t size = type_count * sizeof(TNC_MessageType); + + this->supported_types = malloc(size); + memcpy(this->supported_types, supported_types, size); + } + DBG2(DBG_TNC, "IMV %u supports %u message types", this->id, type_count); +} + +METHOD(imv_t, type_supported, bool, + private_tnc_imv_t *this, TNC_MessageType message_type) +{ + TNC_VendorID msg_vid, vid; + TNC_MessageSubtype msg_subtype, subtype; + int i; + + msg_vid = (message_type >> 8) & TNC_VENDORID_ANY; + msg_subtype = message_type & TNC_SUBTYPE_ANY; + + for (i = 0; i < this->type_count; i++) + { + vid = (this->supported_types[i] >> 8) & TNC_VENDORID_ANY; + subtype = this->supported_types[i] & TNC_SUBTYPE_ANY; + + if (this->supported_types[i] == message_type + || (subtype == TNC_SUBTYPE_ANY + && (msg_vid == vid || vid == TNC_VENDORID_ANY)) + || (vid == TNC_VENDORID_ANY + && (msg_subtype == subtype || subtype == TNC_SUBTYPE_ANY))) + { + return TRUE; + } + } + return FALSE; +} + +METHOD(imv_t, destroy, void, + private_tnc_imv_t *this) +{ + dlclose(this->handle); + free(this->supported_types); + free(this->name); + free(this->path); + free(this); +} + +/** + * Described in header. + */ +imv_t* tnc_imv_create(char *name, char *path) +{ + private_tnc_imv_t *this; + + INIT(this, + .public = { + .set_id = _set_id, + .get_id = _get_id, + .get_name = _get_name, + .set_message_types = _set_message_types, + .type_supported = _type_supported, + .destroy = _destroy, + }, + .name = name, + .path = path, + ); + + this->handle = dlopen(path, RTLD_LAZY); + if (!this->handle) + { + DBG1(DBG_TNC, "IMV \"%s\" failed to load: %s", name, dlerror()); + free(this); + return NULL; + } + + this->public.initialize = dlsym(this->handle, "TNC_IMV_Initialize"); + if (!this->public.initialize) + { + DBG1(DBG_TNC, "could not resolve TNC_IMV_Initialize in %s: %s\n", + path, dlerror()); + dlclose(this->handle); + free(this); + return NULL; + } + this->public.notify_connection_change = + dlsym(this->handle, "TNC_IMV_NotifyConnectionChange"); + this->public.solicit_recommendation = + dlsym(this->handle, "TNC_IMV_SolicitRecommendation"); + if (!this->public.solicit_recommendation) + { + DBG1(DBG_TNC, "could not resolve TNC_IMV_SolicitRecommendation in %s: %s\n", + path, dlerror()); + dlclose(this->handle); + free(this); + return NULL; + } + this->public.receive_message = + dlsym(this->handle, "TNC_IMV_ReceiveMessage"); + this->public.batch_ending = + dlsym(this->handle, "TNC_IMV_BatchEnding"); + this->public.terminate = + dlsym(this->handle, "TNC_IMV_Terminate"); + this->public.provide_bind_function = + dlsym(this->handle, "TNC_IMV_ProvideBindFunction"); + if (!this->public.provide_bind_function) + { + DBG1(DBG_TNC, "could not resolve TNC_IMV_ProvideBindFunction in %s: %s\n", + path, dlerror()); + dlclose(this->handle); + free(this); + return NULL; + } + + return &this->public; +} diff --git a/src/libcharon/plugins/tnc_imv/tnc_imv.h b/src/libcharon/plugins/tnc_imv/tnc_imv.h new file mode 100644 index 000000000..75939e54c --- /dev/null +++ b/src/libcharon/plugins/tnc_imv/tnc_imv.h @@ -0,0 +1,36 @@ +/* + * Copyright (C) 2010 Andreas Steffen + * HSR 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 tnc_imv_t tnc_imv + * @{ @ingroup tnc_imv + */ + +#ifndef TNC_IMV_H_ +#define TNC_IMV_H_ + +#include <tnc/imv/imv.h> + +/** + * Create an Integrity Measurement Verifier. + * + * @param name name of the IMV + * @param filename path to the dynamic IMV library + * @return instance of the imv_t interface + */ +imv_t* tnc_imv_create(char *name, char *filename); + +#endif /** TNC_IMV_H_ @}*/ diff --git a/src/libcharon/plugins/tnc_imv/tnc_imv_bind_function.c b/src/libcharon/plugins/tnc_imv/tnc_imv_bind_function.c new file mode 100644 index 000000000..0ea52f08e --- /dev/null +++ b/src/libcharon/plugins/tnc_imv/tnc_imv_bind_function.c @@ -0,0 +1,137 @@ +/* + * Copyright (C) 2006 Mike McCauley + * Copyright (C) 2010 Andreas Steffen, HSR 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 "tnc_imv.h" + +#include <debug.h> +#include <daemon.h> + +#define TNC_IMCID_ANY 0xffff + +/** + * Called by the IMV to inform a TNCS about the set of message types the IMV + * is able to receive + */ +TNC_Result TNC_TNCS_ReportMessageTypes(TNC_IMVID imv_id, + TNC_MessageTypeList supported_types, + TNC_UInt32 type_count) +{ + return charon->imvs->set_message_types(charon->imvs, imv_id, + supported_types, type_count); +} + +/** + * Called by the IMV to ask a TNCS to retry an Integrity Check Handshake + */ +TNC_Result TNC_TNCS_RequestHandshakeRetry(TNC_IMVID imv_id, + TNC_ConnectionID connection_id, + TNC_RetryReason reason) +{ + return charon->tnccs->request_handshake_retry(charon->tnccs, FALSE, imv_id, + connection_id, reason); +} + +/** + * Called by the IMV when an IMV-IMC message is to be sent + */ +TNC_Result TNC_TNCS_SendMessage(TNC_IMVID imv_id, + TNC_ConnectionID connection_id, + TNC_BufferReference msg, + TNC_UInt32 msg_len, + TNC_MessageType msg_type) +{ + return charon->tnccs->send_message(charon->tnccs, TNC_IMCID_ANY, imv_id, + connection_id, msg, msg_len, msg_type); +} + +/** + * Called by the IMV to deliver its IMV Action Recommendation and IMV Evaluation + * Result to the TNCS + */ +TNC_Result TNC_TNCS_ProvideRecommendation(TNC_IMVID imv_id, + TNC_ConnectionID connection_id, + TNC_IMV_Action_Recommendation recommendation, + TNC_IMV_Evaluation_Result evaluation) +{ + return charon->tnccs->provide_recommendation(charon->tnccs, imv_id, + connection_id, recommendation, evaluation); +} + +/** + * Called by the IMV to get the value of an attribute associated with a + * connection or with the TNCS as a whole. + */ +TNC_Result TNC_TNCS_GetAttribute(TNC_IMVID imv_id, + TNC_ConnectionID connection_id, + TNC_AttributeID attribute_id, + TNC_UInt32 buffer_len, + TNC_BufferReference buffer, + TNC_UInt32 *out_value_len) +{ + return charon->tnccs->get_attribute(charon->tnccs, imv_id, connection_id, + attribute_id, buffer_len, buffer, out_value_len); +} + +/** + * Called by the IMV to set the value of an attribute associated with a + * connection or with the TNCS as a whole. + */ +TNC_Result TNC_TNCS_SetAttribute(TNC_IMVID imv_id, + TNC_ConnectionID connection_id, + TNC_AttributeID attribute_id, + TNC_UInt32 buffer_len, + TNC_BufferReference buffer) +{ + return charon->tnccs->set_attribute(charon->tnccs, imv_id, connection_id, + attribute_id, buffer_len, buffer); +} + +/** + * Called by the IMV when it needs a function pointer + */ +TNC_Result TNC_TNCS_BindFunction(TNC_IMVID id, + char *function_name, + void **function_pointer) +{ + if (streq(function_name, "TNC_TNCS_ReportMessageTypes")) + { + *function_pointer = (void*)TNC_TNCS_ReportMessageTypes; + } + else if (streq(function_name, "TNC_TNCS_RequestHandshakeRetry")) + { + *function_pointer = (void*)TNC_TNCS_RequestHandshakeRetry; + } + else if (streq(function_name, "TNC_TNCS_SendMessage")) + { + *function_pointer = (void*)TNC_TNCS_SendMessage; + } + else if (streq(function_name, "TNC_TNCS_ProvideRecommendation")) + { + *function_pointer = (void*)TNC_TNCS_ProvideRecommendation; + } + else if (streq(function_name, "TNC_TNCS_GetAttribute")) + { + *function_pointer = (void*)TNC_TNCS_GetAttribute; + } + else if (streq(function_name, "TNC_TNCS_SetAttribute")) + { + *function_pointer = (void*)TNC_TNCS_SetAttribute; + } + else + { + return TNC_RESULT_INVALID_PARAMETER; + } + return TNC_RESULT_SUCCESS; +} diff --git a/src/libcharon/plugins/tnc_imv/tnc_imv_manager.c b/src/libcharon/plugins/tnc_imv/tnc_imv_manager.c new file mode 100644 index 000000000..559de86d0 --- /dev/null +++ b/src/libcharon/plugins/tnc_imv/tnc_imv_manager.c @@ -0,0 +1,295 @@ +/* + * Copyright (C) 2006 Mike McCauley + * Copyright (C) 2010 Andreas Steffen, HSR 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 "tnc_imv_manager.h" +#include "tnc_imv_recommendations.h" + +#include <tnc/imv/imv_manager.h> +#include <tnc/tncifimv.h> + +#include <debug.h> +#include <daemon.h> +#include <threading/mutex.h> + +typedef struct private_tnc_imv_manager_t private_tnc_imv_manager_t; + + +/** + * Private data of an imv_manager_t object. + */ +struct private_tnc_imv_manager_t { + + /** + * Public members of imv_manager_t. + */ + imv_manager_t public; + + /** + * Linked list of IMVs + */ + linked_list_t *imvs; + + /** + * Next IMV ID to be assigned + */ + TNC_IMVID next_imv_id; + + /** + * Policy defining how to derive final recommendation from individual ones + */ + recommendation_policy_t policy; +}; + +METHOD(imv_manager_t, add, bool, + private_tnc_imv_manager_t *this, imv_t *imv) +{ + TNC_Version version; + + /* Initialize the IMV module */ + imv->set_id(imv, this->next_imv_id); + if (imv->initialize(imv->get_id(imv), TNC_IFIMV_VERSION_1, + TNC_IFIMV_VERSION_1, &version) != TNC_RESULT_SUCCESS) + { + DBG1(DBG_TNC, "IMV \"%s\" failed to initialize", imv->get_name(imv)); + return FALSE; + } + this->imvs->insert_last(this->imvs, imv); + this->next_imv_id++; + + if (imv->provide_bind_function(imv->get_id(imv), TNC_TNCS_BindFunction) + != TNC_RESULT_SUCCESS) + { + DBG1(DBG_TNC, "IMV \"%s\" could failed to obtain bind function", + imv->get_name(imv)); + this->imvs->remove_last(this->imvs, (void**)&imv); + return FALSE; + } + + return TRUE; +} + +METHOD(imv_manager_t, remove_, imv_t*, + private_tnc_imv_manager_t *this, TNC_IMVID id) +{ + enumerator_t *enumerator; + imv_t *imv; + + enumerator = this->imvs->create_enumerator(this->imvs); + while (enumerator->enumerate(enumerator, &imv)) + { + if (id == imv->get_id(imv)) + { + this->imvs->remove_at(this->imvs, enumerator); + return imv; + } + } + enumerator->destroy(enumerator); + return NULL; +} + +METHOD(imv_manager_t, get_recommendation_policy, recommendation_policy_t, + private_tnc_imv_manager_t *this) +{ + return this->policy; +} + +METHOD(imv_manager_t, create_recommendations, recommendations_t*, + private_tnc_imv_manager_t *this) +{ + return tnc_imv_recommendations_create(this->imvs); +} + +METHOD(imv_manager_t, enforce_recommendation, bool, + private_tnc_imv_manager_t *this, TNC_IMV_Action_Recommendation rec) +{ + char *group; + identification_t *id; + ike_sa_t *ike_sa; + auth_cfg_t *auth; + + switch (rec) + { + case TNC_IMV_ACTION_RECOMMENDATION_ALLOW: + DBG1(DBG_TNC, "TNC recommendation is allow"); + group = "allow"; + break; + case TNC_IMV_ACTION_RECOMMENDATION_ISOLATE: + DBG1(DBG_TNC, "TNC recommendation is isolate"); + group = "isolate"; + break; + case TNC_IMV_ACTION_RECOMMENDATION_NO_ACCESS: + case TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION: + default: + DBG1(DBG_TNC, "TNC recommendation is none"); + return FALSE; + } + ike_sa = charon->bus->get_sa(charon->bus); + if (ike_sa) + { + auth = ike_sa->get_auth_cfg(ike_sa, FALSE); + id = identification_create_from_string(group); + auth->add(auth, AUTH_RULE_GROUP, id); + DBG1(DBG_TNC, "TNC added group membership '%s'", group); + } + return TRUE; +} + + +METHOD(imv_manager_t, notify_connection_change, void, + private_tnc_imv_manager_t *this, TNC_ConnectionID id, + TNC_ConnectionState state) +{ + enumerator_t *enumerator; + imv_t *imv; + + enumerator = this->imvs->create_enumerator(this->imvs); + while (enumerator->enumerate(enumerator, &imv)) + { + if (imv->notify_connection_change) + { + imv->notify_connection_change(imv->get_id(imv), id, state); + } + } + enumerator->destroy(enumerator); +} + +METHOD(imv_manager_t, set_message_types, TNC_Result, + private_tnc_imv_manager_t *this, TNC_IMVID id, + TNC_MessageTypeList supported_types, + TNC_UInt32 type_count) +{ + enumerator_t *enumerator; + imv_t *imv; + TNC_Result result = TNC_RESULT_FATAL; + + enumerator = this->imvs->create_enumerator(this->imvs); + while (enumerator->enumerate(enumerator, &imv)) + { + if (id == imv->get_id(imv)) + { + imv->set_message_types(imv, supported_types, type_count); + result = TNC_RESULT_SUCCESS; + break; + } + } + enumerator->destroy(enumerator); + return result; +} + +METHOD(imv_manager_t, solicit_recommendation, void, + private_tnc_imv_manager_t *this, TNC_ConnectionID id) +{ + enumerator_t *enumerator; + imv_t *imv; + + enumerator = this->imvs->create_enumerator(this->imvs); + while (enumerator->enumerate(enumerator, &imv)) + { + imv->solicit_recommendation(imv->get_id(imv), id); + } + enumerator->destroy(enumerator); +} + +METHOD(imv_manager_t, receive_message, void, + private_tnc_imv_manager_t *this, TNC_ConnectionID connection_id, + TNC_BufferReference message, + TNC_UInt32 message_len, + TNC_MessageType message_type) +{ + enumerator_t *enumerator; + imv_t *imv; + + enumerator = this->imvs->create_enumerator(this->imvs); + while (enumerator->enumerate(enumerator, &imv)) + { + if (imv->receive_message && imv->type_supported(imv, message_type)) + { + imv->receive_message(imv->get_id(imv), connection_id, + message, message_len, message_type); + } + } + enumerator->destroy(enumerator); +} + +METHOD(imv_manager_t, batch_ending, void, + private_tnc_imv_manager_t *this, TNC_ConnectionID id) +{ + enumerator_t *enumerator; + imv_t *imv; + + enumerator = this->imvs->create_enumerator(this->imvs); + while (enumerator->enumerate(enumerator, &imv)) + { + if (imv->batch_ending) + { + imv->batch_ending(imv->get_id(imv), id); + } + } + enumerator->destroy(enumerator); +} + +METHOD(imv_manager_t, destroy, void, + private_tnc_imv_manager_t *this) +{ + imv_t *imv; + + while (this->imvs->remove_last(this->imvs, (void**)&imv) == SUCCESS) + { + if (imv->terminate && + imv->terminate(imv->get_id(imv)) != TNC_RESULT_SUCCESS) + { + DBG1(DBG_TNC, "IMV \"%s\" not terminated successfully", + imv->get_name(imv)); + } + imv->destroy(imv); + } + this->imvs->destroy(this->imvs); + free(this); +} + +/** + * Described in header. + */ +imv_manager_t* tnc_imv_manager_create(void) +{ + private_tnc_imv_manager_t *this; + recommendation_policy_t policy; + + INIT(this, + .public = { + .add = _add, + .remove = _remove_, /* avoid name conflict with stdio.h */ + .get_recommendation_policy = _get_recommendation_policy, + .create_recommendations = _create_recommendations, + .enforce_recommendation = _enforce_recommendation, + .notify_connection_change = _notify_connection_change, + .set_message_types = _set_message_types, + .solicit_recommendation = _solicit_recommendation, + .receive_message = _receive_message, + .batch_ending = _batch_ending, + .destroy = _destroy, + }, + .imvs = linked_list_create(), + .next_imv_id = 1, + ); + policy = enum_from_name(recommendation_policy_names, + lib->settings->get_str(lib->settings, + "charon.plugins.tnc-imv.recommendation_policy", "default")); + this->policy = (policy != -1) ? policy : RECOMMENDATION_POLICY_DEFAULT; + DBG1(DBG_TNC, "TNC recommendation policy is '%N'", + recommendation_policy_names, this->policy); + + return &this->public; +} diff --git a/src/libcharon/plugins/tnc_imv/tnc_imv_manager.h b/src/libcharon/plugins/tnc_imv/tnc_imv_manager.h new file mode 100644 index 000000000..2fe9e7ae3 --- /dev/null +++ b/src/libcharon/plugins/tnc_imv/tnc_imv_manager.h @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2010 Andreas Steffen + * HSR 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 tnc_imv_manager tnc_imv_manager + * @{ @ingroup tnc_imv + */ + +#ifndef TNC_IMV_MANAGER_H_ +#define TNC_IMV_MANAGER_H_ + +#include <tnc/imv/imv_manager.h> + +/** + * Create an IMV manager instance. + */ +imv_manager_t *tnc_imv_manager_create(); + +#endif /** TNC_IMV_MANAGER_H_ @}*/ diff --git a/src/libcharon/plugins/tnc_imv/tnc_imv_plugin.c b/src/libcharon/plugins/tnc_imv/tnc_imv_plugin.c index 5b3d3892d..f238f01ea 100644 --- a/src/libcharon/plugins/tnc_imv/tnc_imv_plugin.c +++ b/src/libcharon/plugins/tnc_imv/tnc_imv_plugin.c @@ -14,15 +14,137 @@ */ #include "tnc_imv_plugin.h" +#include "tnc_imv_manager.h" +#include "tnc_imv.h" -#include <libtnctncs.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/mman.h> +#include <unistd.h> +#include <errno.h> +#include <fcntl.h> #include <daemon.h> +#include <utils/lexparser.h> + +/** + * load IMVs from a configuration file + */ +static bool load_imvs(char *filename) +{ + int fd, line_nr = 0; + chunk_t src, line; + struct stat sb; + void *addr; + + DBG1(DBG_TNC, "loading IMVs from '%s'", filename); + fd = open(filename, O_RDONLY); + if (fd == -1) + { + DBG1(DBG_TNC, "opening configuration file '%s' failed: %s", filename, + strerror(errno)); + return FALSE; + } + if (fstat(fd, &sb) == -1) + { + DBG1(DBG_LIB, "getting file size of '%s' failed: %s", filename, + strerror(errno)); + close(fd); + return FALSE; + } + addr = mmap(NULL, sb.st_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); + if (addr == MAP_FAILED) + { + DBG1(DBG_LIB, "mapping '%s' failed: %s", filename, strerror(errno)); + close(fd); + return FALSE; + } + src = chunk_create(addr, sb.st_size); + + while (fetchline(&src, &line)) + { + char *name, *path; + chunk_t token; + imv_t *imv; + + line_nr++; + + /* skip comments or empty lines */ + if (*line.ptr == '#' || !eat_whitespace(&line)) + { + continue; + } + + /* determine keyword */ + if (!extract_token(&token, ' ', &line)) + { + DBG1(DBG_TNC, "line %d: keyword must be followed by a space", + line_nr); + return FALSE; + } + + /* only interested in IMVs */ + if (!match("IMV", &token)) + { + continue; + } + + /* advance to the IMV name and extract it */ + if (!extract_token(&token, '"', &line) || + !extract_token(&token, '"', &line)) + { + DBG1(DBG_TNC, "line %d: IMV name must be set in double quotes", + line_nr); + return FALSE; + } + + /* copy the IMV name */ + name = malloc(token.len + 1); + memcpy(name, token.ptr, token.len); + name[token.len] = '\0'; + + /* advance to the IMV path and extract it */ + if (!eat_whitespace(&line)) + { + DBG1(DBG_TNC, "line %d: IMV path is missing", line_nr); + free(name); + return FALSE; + } + if (!extract_token(&token, ' ', &line)) + { + token = line; + } + + /* copy the IMV path */ + path = malloc(token.len + 1); + memcpy(path, token.ptr, token.len); + path[token.len] = '\0'; + + /* load and register IMV instance */ + imv = tnc_imv_create(name, path); + if (!imv) + { + free(name); + free(path); + return FALSE; + } + if (!charon->imvs->add(charon->imvs, imv)) + { + imv->destroy(imv); + return FALSE; + } + DBG1(DBG_TNC, "IMV %u \"%s\" loaded from '%s'", imv->get_id(imv), + name, path); + } + munmap(addr, sb.st_size); + close(fd); + return TRUE; +} METHOD(plugin_t, destroy, void, tnc_imv_plugin_t *this) { - libtnc_tncs_Terminate(); + charon->imvs->destroy(charon->imvs); free(this); } @@ -42,13 +164,18 @@ plugin_t *tnc_imv_plugin_create() tnc_config = lib->settings->get_str(lib->settings, "charon.plugins.tnc-imv.tnc_config", "/etc/tnc_config"); - if (libtnc_tncs_Initialize(tnc_config) != TNC_RESULT_SUCCESS) + + /* Create IMV manager */ + charon->imvs = tnc_imv_manager_create(); + + /* Load IMVs and abort if not all instances initalize successfully */ + if (!load_imvs(tnc_config)) { + charon->imvs->destroy(charon->imvs); + charon->imvs = NULL; free(this); - DBG1(DBG_TNC, "TNC IMV initialization failed"); return NULL; } - return &this->plugin; } diff --git a/src/libcharon/plugins/tnc_imv/tnc_imv_recommendations.c b/src/libcharon/plugins/tnc_imv/tnc_imv_recommendations.c new file mode 100644 index 000000000..5cc6b0ced --- /dev/null +++ b/src/libcharon/plugins/tnc_imv/tnc_imv_recommendations.c @@ -0,0 +1,415 @@ +/* + * Copyright (C) 2010 Andreas Steffen, HSR 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 <debug.h> +#include <daemon.h> +#include <tnc/tncifimv.h> +#include <tnc/imv/imv.h> +#include <tnc/imv/imv_recommendations.h> + +typedef struct private_tnc_imv_recommendations_t private_tnc_imv_recommendations_t; +typedef struct recommendation_entry_t recommendation_entry_t; + +/** + * Recommendation entry + */ +struct recommendation_entry_t { + + /** + * IMV ID + */ + TNC_IMVID id; + + /** + * Received a recommendation message from this IMV? + */ + bool have_recommendation; + + /** + * Action Recommendation provided by IMV instance + */ + TNC_IMV_Action_Recommendation rec; + + /** + * Evaluation Result provided by IMV instance + */ + TNC_IMV_Evaluation_Result eval; + + /** + * Reason string provided by IMV instance + */ + chunk_t reason; + + /** + * Reason language provided by IMV instance + */ + chunk_t reason_language; +}; + +/** + * Private data of a recommendations_t object. + */ +struct private_tnc_imv_recommendations_t { + + /** + * Public members of recommendations_t. + */ + recommendations_t public; + + /** + * list of recommendations and evaluations provided by IMVs + */ + linked_list_t *recs; + + /** + * Preferred language for remediation messages + */ + chunk_t preferred_language; +}; + +METHOD(recommendations_t, provide_recommendation, TNC_Result, + private_tnc_imv_recommendations_t* this, TNC_IMVID id, + TNC_IMV_Action_Recommendation rec, + TNC_IMV_Evaluation_Result eval) +{ + enumerator_t *enumerator; + recommendation_entry_t *entry; + bool found = FALSE; + + DBG2(DBG_TNC, "IMV %u provides recommendation '%N' and evaluation '%N'", id, + TNC_IMV_Action_Recommendation_names, rec, + TNC_IMV_Evaluation_Result_names, eval); + + enumerator = this->recs->create_enumerator(this->recs); + while (enumerator->enumerate(enumerator, &entry)) + { + if (entry->id == id) + { + found = TRUE; + entry->have_recommendation = TRUE; + entry->rec = rec; + entry->eval = eval; + break; + } + } + enumerator->destroy(enumerator); + return found ? TNC_RESULT_SUCCESS : TNC_RESULT_FATAL; +} + +METHOD(recommendations_t, have_recommendation, bool, + private_tnc_imv_recommendations_t *this, TNC_IMV_Action_Recommendation *rec, + TNC_IMV_Evaluation_Result *eval) +{ + enumerator_t *enumerator; + recommendation_entry_t *entry; + recommendation_policy_t policy; + TNC_IMV_Action_Recommendation final_rec; + TNC_IMV_Evaluation_Result final_eval; + bool first = TRUE, incomplete = FALSE; + + *rec = final_rec = TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION; + *eval = final_eval = TNC_IMV_EVALUATION_RESULT_DONT_KNOW; + + if (this->recs->get_count(this->recs) == 0) + { + DBG1(DBG_TNC, "there are no IMVs to make a recommendation"); + return TRUE; + } + policy = charon->imvs->get_recommendation_policy(charon->imvs); + + enumerator = this->recs->create_enumerator(this->recs); + while (enumerator->enumerate(enumerator, &entry)) + { + if (!entry->have_recommendation) + { + incomplete = TRUE; + break; + } + if (first) + { + final_rec = entry->rec; + final_eval = entry->eval; + first = FALSE; + continue; + } + switch (policy) + { + case RECOMMENDATION_POLICY_DEFAULT: + switch (entry->rec) + { + case TNC_IMV_ACTION_RECOMMENDATION_NO_ACCESS: + final_rec = entry->rec; + break; + case TNC_IMV_ACTION_RECOMMENDATION_ISOLATE: + if (final_rec != TNC_IMV_ACTION_RECOMMENDATION_NO_ACCESS) + { + final_rec = entry->rec; + }; + break; + case TNC_IMV_ACTION_RECOMMENDATION_ALLOW: + if (final_rec == TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION) + { + final_rec = entry->rec; + }; + break; + case TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION: + break; + } + switch (entry->eval) + { + case TNC_IMV_EVALUATION_RESULT_ERROR: + final_eval = entry->eval; + break; + case TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MAJOR: + if (final_eval != TNC_IMV_EVALUATION_RESULT_ERROR) + { + final_eval = entry->eval; + } + break; + case TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MINOR: + if (final_eval != TNC_IMV_EVALUATION_RESULT_ERROR && + final_eval != TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MAJOR) + { + final_eval = entry->eval; + } + break; + case TNC_IMV_EVALUATION_RESULT_COMPLIANT: + if (final_eval == TNC_IMV_EVALUATION_RESULT_DONT_KNOW) + { + final_eval = entry->eval; + } + break; + case TNC_IMV_EVALUATION_RESULT_DONT_KNOW: + break; + } + break; + + case RECOMMENDATION_POLICY_ALL: + if (entry->rec != final_rec) + { + final_rec = TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION; + } + if (entry->eval != final_eval) + { + final_eval = TNC_IMV_EVALUATION_RESULT_DONT_KNOW; + } + break; + + case RECOMMENDATION_POLICY_ANY: + switch (entry->rec) + { + case TNC_IMV_ACTION_RECOMMENDATION_ALLOW: + final_rec = entry->rec; + break; + case TNC_IMV_ACTION_RECOMMENDATION_ISOLATE: + if (final_rec != TNC_IMV_ACTION_RECOMMENDATION_ALLOW) + { + final_rec = entry->rec; + }; + break; + case TNC_IMV_ACTION_RECOMMENDATION_NO_ACCESS: + if (final_rec == TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION) + { + final_rec = entry->rec; + }; + break; + case TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION: + break; + } + switch (entry->eval) + { + case TNC_IMV_EVALUATION_RESULT_COMPLIANT: + final_eval = entry->eval; + break; + case TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MINOR: + if (final_eval != TNC_IMV_EVALUATION_RESULT_COMPLIANT) + { + final_eval = entry->eval; + } + break; + case TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MAJOR: + if (final_eval != TNC_IMV_EVALUATION_RESULT_COMPLIANT && + final_eval != TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MINOR) + { + final_eval = entry->eval; + } + break; + case TNC_IMV_EVALUATION_RESULT_ERROR: + if (final_eval == TNC_IMV_EVALUATION_RESULT_DONT_KNOW) + { + final_eval = entry->eval; + } + break; + case TNC_IMV_EVALUATION_RESULT_DONT_KNOW: + break; + } + } + } + enumerator->destroy(enumerator); + + if (incomplete) + { + return FALSE; + } + *rec = final_rec; + *eval = final_eval; + return TRUE; +} + +METHOD(recommendations_t, get_preferred_language, chunk_t, + private_tnc_imv_recommendations_t *this) +{ + return this->preferred_language; +} + +METHOD(recommendations_t, set_preferred_language, void, + private_tnc_imv_recommendations_t *this, chunk_t pref_lang) +{ + free(this->preferred_language.ptr); + this->preferred_language = chunk_clone(pref_lang); +} + +METHOD(recommendations_t, set_reason_string, TNC_Result, + private_tnc_imv_recommendations_t *this, TNC_IMVID id, chunk_t reason) +{ + enumerator_t *enumerator; + recommendation_entry_t *entry; + bool found = FALSE; + + DBG2(DBG_TNC, "IMV %u is setting reason string to '%.*s'", + id, reason.len, reason.ptr); + + enumerator = this->recs->create_enumerator(this->recs); + while (enumerator->enumerate(enumerator, &entry)) + { + if (entry->id == id) + { + found = TRUE; + free(entry->reason.ptr); + entry->reason = chunk_clone(reason); + break; + } + } + enumerator->destroy(enumerator); + return found ? TNC_RESULT_SUCCESS : TNC_RESULT_INVALID_PARAMETER; +} + +METHOD(recommendations_t, set_reason_language, TNC_Result, + private_tnc_imv_recommendations_t *this, TNC_IMVID id, chunk_t reason_lang) +{ + enumerator_t *enumerator; + recommendation_entry_t *entry; + bool found = FALSE; + + DBG2(DBG_TNC, "IMV %u is setting reason language to '%.*s'", + id, reason_lang.len, reason_lang.ptr); + + enumerator = this->recs->create_enumerator(this->recs); + while (enumerator->enumerate(enumerator, &entry)) + { + if (entry->id == id) + { + found = TRUE; + free(entry->reason_language.ptr); + entry->reason_language = chunk_clone(reason_lang); + break; + } + } + enumerator->destroy(enumerator); + return found ? TNC_RESULT_SUCCESS : TNC_RESULT_INVALID_PARAMETER; +} + +/** + * Enumerate reason and reason_language, not recommendation entries + */ +static bool reason_filter(void *null, recommendation_entry_t **entry, + TNC_IMVID *id, void *i2, chunk_t *reason, void *i3, + chunk_t *reason_language) +{ + if ((*entry)->reason.len) + { + *id = (*entry)->id; + *reason = (*entry)->reason; + *reason_language = (*entry)->reason_language; + return TRUE; + } + else + { + return FALSE; + } +} + +METHOD(recommendations_t, create_reason_enumerator, enumerator_t*, + private_tnc_imv_recommendations_t *this) +{ + return enumerator_create_filter(this->recs->create_enumerator(this->recs), + (void*)reason_filter, NULL, NULL); +} + +METHOD(recommendations_t, destroy, void, + private_tnc_imv_recommendations_t *this) +{ + recommendation_entry_t *entry; + + while (this->recs->remove_last(this->recs, (void**)&entry) == SUCCESS) + { + free(entry->reason.ptr); + free(entry->reason_language.ptr); + free(entry); + } + this->recs->destroy(this->recs); + free(this->preferred_language.ptr); + free(this); +} + +/** + * Described in header. + */ +recommendations_t* tnc_imv_recommendations_create(linked_list_t *imv_list) +{ + private_tnc_imv_recommendations_t *this; + recommendation_entry_t *entry; + enumerator_t *enumerator; + imv_t *imv; + + INIT(this, + .public = { + .provide_recommendation = _provide_recommendation, + .have_recommendation = _have_recommendation, + .get_preferred_language = _get_preferred_language, + .set_preferred_language = _set_preferred_language, + .set_reason_string = _set_reason_string, + .set_reason_language = _set_reason_language, + .create_reason_enumerator = _create_reason_enumerator, + .destroy = _destroy, + }, + .recs = linked_list_create(), + ); + + enumerator = imv_list->create_enumerator(imv_list); + while (enumerator->enumerate(enumerator, &imv)) + { + entry = malloc_thing(recommendation_entry_t); + entry->id = imv->get_id(imv); + entry->have_recommendation = FALSE; + entry->rec = TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION; + entry->eval = TNC_IMV_EVALUATION_RESULT_DONT_KNOW; + entry->reason = chunk_empty; + entry->reason_language = chunk_empty; + this->recs->insert_last(this->recs, entry); + } + enumerator->destroy(enumerator); + + return &this->public; +} diff --git a/src/libcharon/plugins/tnc_imv/tnc_imv_recommendations.h b/src/libcharon/plugins/tnc_imv/tnc_imv_recommendations.h new file mode 100644 index 000000000..6d65a2521 --- /dev/null +++ b/src/libcharon/plugins/tnc_imv/tnc_imv_recommendations.h @@ -0,0 +1,33 @@ +/* + * Copyright (C) 2010 Andreas Steffen + * HSR 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 tnc_imv_manager tnc_imv_manager + * @{ @ingroup tnc_imv + */ + +#ifndef TNC_IMV_RECOMMENDATIONS_H_ +#define TNC_IMV_RECOMMENDATIONS_H_ + +#include <tnc/imv/imv_recommendations.h> +#include <utils/linked_list.h> + +/** + * Create an IMV empty recommendations instance + */ +recommendations_t *tnc_imv_recommendations_create(); + +#endif /** TNC_IMV_RECOMMENDATIONS_H_ @}*/ |