diff options
Diffstat (limited to 'src/libimcv/plugins/imv_test/imv_test.c')
| -rw-r--r-- | src/libimcv/plugins/imv_test/imv_test.c | 315 |
1 files changed, 315 insertions, 0 deletions
diff --git a/src/libimcv/plugins/imv_test/imv_test.c b/src/libimcv/plugins/imv_test/imv_test.c new file mode 100644 index 000000000..0afd81aec --- /dev/null +++ b/src/libimcv/plugins/imv_test/imv_test.c @@ -0,0 +1,315 @@ +/* + * Copyright (C) 2011 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 "imv_test_state.h" + +#include <imv/imv_agent.h> +#include <pa_tnc/pa_tnc_msg.h> +#include <ietf/ietf_attr.h> +#include <ietf/ietf_attr_pa_tnc_error.h> +#include <ita/ita_attr.h> +#include <ita/ita_attr_command.h> + +#include <tncif_names.h> +#include <tncif_pa_subtypes.h> + +#include <pen/pen.h> +#include <debug.h> + +/* IMV definitions */ + +static const char imv_name[] = "Test"; + +#define IMV_VENDOR_ID PEN_ITA +#define IMV_SUBTYPE PA_SUBTYPE_ITA_TEST + +static imv_agent_t *imv_test; + +/** + * see section 3.8.1 of TCG TNC IF-IMV Specification 1.3 + */ +TNC_Result TNC_IMV_Initialize(TNC_IMVID imv_id, + TNC_Version min_version, + TNC_Version max_version, + TNC_Version *actual_version) +{ + if (imv_test) + { + DBG1(DBG_IMV, "IMV \"%s\" has already been initialized", imv_name); + return TNC_RESULT_ALREADY_INITIALIZED; + } + imv_test = imv_agent_create(imv_name, IMV_VENDOR_ID, IMV_SUBTYPE, + imv_id, actual_version); + if (!imv_test) + { + return TNC_RESULT_FATAL; + } + if (min_version > TNC_IFIMV_VERSION_1 || max_version < TNC_IFIMV_VERSION_1) + { + DBG1(DBG_IMV, "no common IF-IMV version"); + return TNC_RESULT_NO_COMMON_VERSION; + } + return TNC_RESULT_SUCCESS; +} + +/** + * see section 3.8.2 of TCG TNC IF-IMV Specification 1.3 + */ +TNC_Result TNC_IMV_NotifyConnectionChange(TNC_IMVID imv_id, + TNC_ConnectionID connection_id, + TNC_ConnectionState new_state) +{ + imv_state_t *state; + + if (!imv_test) + { + DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name); + return TNC_RESULT_NOT_INITIALIZED; + } + switch (new_state) + { + case TNC_CONNECTION_STATE_CREATE: + state = imv_test_state_create(connection_id); + return imv_test->create_state(imv_test, state); + case TNC_CONNECTION_STATE_DELETE: + return imv_test->delete_state(imv_test, connection_id); + default: + return imv_test->change_state(imv_test, connection_id, + new_state, NULL); + } +} + +static TNC_Result receive_message(TNC_IMVID imv_id, + TNC_ConnectionID connection_id, + TNC_UInt32 msg_flags, + chunk_t msg, + TNC_VendorID msg_vid, + TNC_MessageSubtype msg_subtype, + TNC_UInt32 src_imc_id, + TNC_UInt32 dst_imv_id) +{ + pa_tnc_msg_t *pa_tnc_msg; + pa_tnc_attr_t *attr; + imv_state_t *state; + imv_test_state_t *test_state; + enumerator_t *enumerator; + TNC_Result result; + int rounds; + bool fatal_error, retry = FALSE; + + if (!imv_test) + { + DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name); + return TNC_RESULT_NOT_INITIALIZED; + } + + /* get current IMV state */ + if (!imv_test->get_state(imv_test, connection_id, &state)) + { + return TNC_RESULT_FATAL; + } + test_state = (imv_test_state_t*)state; + + /* parse received PA-TNC message and automatically handle any errors */ + result = imv_test->receive_message(imv_test, state, msg, msg_vid, + msg_subtype, src_imc_id, dst_imv_id, &pa_tnc_msg); + + /* no parsed PA-TNC attributes available if an error occurred */ + if (!pa_tnc_msg) + { + return result; + } + + /* preprocess any IETF standard error attributes */ + fatal_error = pa_tnc_msg->process_ietf_std_errors(pa_tnc_msg); + + /* add any new IMC and set its number of rounds */ + rounds = lib->settings->get_int(lib->settings, + "libimcv.plugins.imv-test.rounds", 0); + test_state->add_imc(test_state, src_imc_id, rounds); + + /* analyze PA-TNC attributes */ + enumerator = pa_tnc_msg->create_attribute_enumerator(pa_tnc_msg); + while (enumerator->enumerate(enumerator, &attr)) + { + if (attr->get_vendor_id(attr) == PEN_ITA && + attr->get_type(attr) == ITA_ATTR_COMMAND) + { + ita_attr_command_t *ita_attr; + char *command; + + ita_attr = (ita_attr_command_t*)attr; + command = ita_attr->get_command(ita_attr); + + if (streq(command, "allow")) + { + state->set_recommendation(state, + TNC_IMV_ACTION_RECOMMENDATION_ALLOW, + TNC_IMV_EVALUATION_RESULT_COMPLIANT); + } + else if (streq(command, "isolate")) + { + state->set_recommendation(state, + TNC_IMV_ACTION_RECOMMENDATION_ISOLATE, + TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MINOR); + } + else if (streq(command, "block") || streq(command, "none")) + { + state->set_recommendation(state, + TNC_IMV_ACTION_RECOMMENDATION_NO_ACCESS, + TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MAJOR); + } + else if (streq(command, "retry")) + { + retry = TRUE; + } + else + { + DBG1(DBG_IMV, "unsupported ITA Command '%s'", command); + state->set_recommendation(state, + TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION, + TNC_IMV_EVALUATION_RESULT_ERROR); + } + } + } + enumerator->destroy(enumerator); + pa_tnc_msg->destroy(pa_tnc_msg); + + if (fatal_error) + { + state->set_recommendation(state, + TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION, + TNC_IMV_EVALUATION_RESULT_ERROR); + return imv_test->provide_recommendation(imv_test, connection_id); + } + + /* request a handshake retry ? */ + if (retry) + { + test_state->set_rounds(test_state, rounds); + return imv_test->request_handshake_retry(imv_id, connection_id, + TNC_RETRY_REASON_IMV_SERIOUS_EVENT); + } + + /* repeat the measurement ? */ + if (test_state->another_round(test_state, src_imc_id)) + { + attr = ita_attr_command_create("repeat"); + pa_tnc_msg = pa_tnc_msg_create(); + pa_tnc_msg->add_attribute(pa_tnc_msg, attr); + pa_tnc_msg->build(pa_tnc_msg); + result = imv_test->send_message(imv_test, connection_id, TRUE, imv_id, + src_imc_id, pa_tnc_msg->get_encoding(pa_tnc_msg)); + pa_tnc_msg->destroy(pa_tnc_msg); + + return result; + } + + return imv_test->provide_recommendation(imv_test, connection_id); +} + +/** + * see section 3.8.4 of TCG TNC IF-IMV Specification 1.3 + */ +TNC_Result TNC_IMV_ReceiveMessage(TNC_IMVID imv_id, + TNC_ConnectionID connection_id, + TNC_BufferReference msg, + TNC_UInt32 msg_len, + TNC_MessageType msg_type) +{ + TNC_VendorID msg_vid; + TNC_MessageSubtype msg_subtype; + + msg_vid = msg_type >> 8; + msg_subtype = msg_type & TNC_SUBTYPE_ANY; + + return receive_message(imv_id, connection_id, 0, chunk_create(msg, msg_len), + msg_vid, msg_subtype, 0, TNC_IMVID_ANY); +} + +/** + * see section 3.8.6 of TCG TNC IF-IMV Specification 1.3 + */ +TNC_Result TNC_IMV_ReceiveMessageLong(TNC_IMVID imv_id, + TNC_ConnectionID connection_id, + TNC_UInt32 msg_flags, + TNC_BufferReference msg, + TNC_UInt32 msg_len, + TNC_VendorID msg_vid, + TNC_MessageSubtype msg_subtype, + TNC_UInt32 src_imc_id, + TNC_UInt32 dst_imv_id) +{ + return receive_message(imv_id, connection_id, msg_flags, + chunk_create(msg, msg_len), msg_vid, msg_subtype, + src_imc_id, dst_imv_id); +} + +/** + * see section 3.8.7 of TCG TNC IF-IMV Specification 1.3 + */ +TNC_Result TNC_IMV_SolicitRecommendation(TNC_IMVID imv_id, + TNC_ConnectionID connection_id) +{ + if (!imv_test) + { + DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name); + return TNC_RESULT_NOT_INITIALIZED; + } + return imv_test->provide_recommendation(imv_test, connection_id); +} + +/** + * see section 3.8.8 of TCG TNC IF-IMV Specification 1.3 + */ +TNC_Result TNC_IMV_BatchEnding(TNC_IMVID imv_id, + TNC_ConnectionID connection_id) +{ + if (!imv_test) + { + DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name); + return TNC_RESULT_NOT_INITIALIZED; + } + return TNC_RESULT_SUCCESS; +} + +/** + * see section 3.8.9 of TCG TNC IF-IMV Specification 1.3 + */ +TNC_Result TNC_IMV_Terminate(TNC_IMVID imv_id) +{ + if (!imv_test) + { + DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name); + return TNC_RESULT_NOT_INITIALIZED; + } + imv_test->destroy(imv_test); + imv_test = NULL; + + return TNC_RESULT_SUCCESS; +} + +/** + * see section 4.2.8.1 of TCG TNC IF-IMV Specification 1.3 + */ +TNC_Result TNC_IMV_ProvideBindFunction(TNC_IMVID imv_id, + TNC_TNCS_BindFunctionPointer bind_function) +{ + if (!imv_test) + { + DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name); + return TNC_RESULT_NOT_INITIALIZED; + } + return imv_test->bind_functions(imv_test, bind_function); +} |