diff options
Diffstat (limited to 'src/libimcv/plugins/imc_test/imc_test.c')
| -rw-r--r-- | src/libimcv/plugins/imc_test/imc_test.c | 379 |
1 files changed, 379 insertions, 0 deletions
diff --git a/src/libimcv/plugins/imc_test/imc_test.c b/src/libimcv/plugins/imc_test/imc_test.c new file mode 100644 index 000000000..fe005ed4a --- /dev/null +++ b/src/libimcv/plugins/imc_test/imc_test.c @@ -0,0 +1,379 @@ +/* + * 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 "imc_test_state.h" + +#include <imc/imc_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> + +/* IMC definitions */ + +static const char imc_name[] = "Test"; + +#define IMC_VENDOR_ID PEN_ITA +#define IMC_SUBTYPE PA_SUBTYPE_ITA_TEST + +static imc_agent_t *imc_test; + +/** + * see section 3.8.1 of TCG TNC IF-IMC Specification 1.3 + */ +TNC_Result TNC_IMC_Initialize(TNC_IMCID imc_id, + TNC_Version min_version, + TNC_Version max_version, + TNC_Version *actual_version) +{ + if (imc_test) + { + DBG1(DBG_IMC, "IMC \"%s\" has already been initialized", imc_name); + return TNC_RESULT_ALREADY_INITIALIZED; + } + imc_test = imc_agent_create(imc_name, IMC_VENDOR_ID, IMC_SUBTYPE, + imc_id, actual_version); + if (!imc_test) + { + return TNC_RESULT_FATAL; + } + if (min_version > TNC_IFIMC_VERSION_1 || max_version < TNC_IFIMC_VERSION_1) + { + DBG1(DBG_IMC, "no common IF-IMC version"); + return TNC_RESULT_NO_COMMON_VERSION; + } + return TNC_RESULT_SUCCESS; +} + +/** + * see section 3.8.2 of TCG TNC IF-IMC Specification 1.3 + */ +TNC_Result TNC_IMC_NotifyConnectionChange(TNC_IMCID imc_id, + TNC_ConnectionID connection_id, + TNC_ConnectionState new_state) +{ + imc_state_t *state; + imc_test_state_t *test_state; + TNC_Result result; + char *command; + bool retry; + int additional_ids; + + if (!imc_test) + { + DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name); + return TNC_RESULT_NOT_INITIALIZED; + } + + switch (new_state) + { + case TNC_CONNECTION_STATE_CREATE: + command = lib->settings->get_str(lib->settings, + "libimcv.plugins.imc-test.command", "none"); + retry = lib->settings->get_bool(lib->settings, + "libimcv.plugins.imc-test.retry", FALSE); + state = imc_test_state_create(connection_id, command, retry); + + result = imc_test->create_state(imc_test, state); + if (result != TNC_RESULT_SUCCESS) + { + return result; + } + + /* Optionally reserve additional IMC IDs */ + additional_ids = lib->settings->get_int(lib->settings, + "libimcv.plugins.imc-test.additional_ids", 0); + imc_test->reserve_additional_ids(imc_test, additional_ids - + imc_test->count_additional_ids(imc_test)); + + return TNC_RESULT_SUCCESS; + + case TNC_CONNECTION_STATE_HANDSHAKE: + /* get updated IMC state */ + result = imc_test->change_state(imc_test, connection_id, + new_state, &state); + if (result != TNC_RESULT_SUCCESS) + { + return TNC_RESULT_FATAL; + } + test_state = (imc_test_state_t*)state; + + /* is it the first handshake or a retry ? */ + if (!test_state->is_first_handshake(test_state)) + { + command = lib->settings->get_str(lib->settings, + "libimcv.plugins.imc-test.retry_command", + test_state->get_command(test_state)); + test_state->set_command(test_state, command); + } + return TNC_RESULT_SUCCESS; + + case TNC_CONNECTION_STATE_DELETE: + return imc_test->delete_state(imc_test, connection_id); + + case TNC_CONNECTION_STATE_ACCESS_ISOLATED: + case TNC_CONNECTION_STATE_ACCESS_NONE: + /* get updated IMC state */ + result = imc_test->change_state(imc_test, connection_id, + new_state, &state); + if (result != TNC_RESULT_SUCCESS) + { + return TNC_RESULT_FATAL; + } + test_state = (imc_test_state_t*)state; + + /* do a handshake retry? */ + if (test_state->do_handshake_retry(test_state)) + { + return imc_test->request_handshake_retry(imc_id, connection_id, + TNC_RETRY_REASON_IMC_REMEDIATION_COMPLETE); + } + return TNC_RESULT_SUCCESS; + + default: + return imc_test->change_state(imc_test, connection_id, + new_state, NULL); + } +} + +static TNC_Result send_message(imc_state_t *state, TNC_UInt32 src_imc_id, + TNC_UInt32 dst_imv_id) +{ + imc_test_state_t *test_state; + pa_tnc_msg_t *msg; + pa_tnc_attr_t *attr; + bool excl; + TNC_ConnectionID connection_id; + TNC_Result result; + + connection_id = state->get_connection_id(state); + test_state = (imc_test_state_t*)state; + attr = ita_attr_command_create(test_state->get_command(test_state)); + attr->set_noskip_flag(attr, TRUE); + msg = pa_tnc_msg_create(); + msg->add_attribute(msg, attr); + msg->build(msg); + excl = dst_imv_id != TNC_IMVID_ANY; + result = imc_test->send_message(imc_test, connection_id, excl, src_imc_id, + dst_imv_id, msg->get_encoding(msg)); + msg->destroy(msg); + + return result; +} + +/** + * see section 3.8.3 of TCG TNC IF-IMC Specification 1.3 + */ +TNC_Result TNC_IMC_BeginHandshake(TNC_IMCID imc_id, + TNC_ConnectionID connection_id) +{ + imc_state_t *state; + enumerator_t *enumerator; + void *pointer; + TNC_UInt32 additional_id; + TNC_Result result; + + if (!imc_test) + { + DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name); + return TNC_RESULT_NOT_INITIALIZED; + } + + /* get current IMC state */ + if (!imc_test->get_state(imc_test, connection_id, &state)) + { + return TNC_RESULT_FATAL; + } + + /* send PA message for primary IMC ID */ + result = send_message(state, imc_id, TNC_IMVID_ANY); + + /* Exit if there are no additional IMC IDs */ + if (!imc_test->count_additional_ids(imc_test)) + { + return result; + } + + /* Do we have support for transporting multiple IMC IDs? */ + if (!state->has_long(state)) + { + DBG1(DBG_IMC, "IMC %u \"%s\" did not detect support for transporting " + "multiple IMC IDs", imc_id, imc_name); + return result; + } + + /* send PA messages for additional IMC IDs */ + enumerator = imc_test->create_id_enumerator(imc_test); + while (result == TNC_RESULT_SUCCESS && + enumerator->enumerate(enumerator, &pointer)) + { + /* interpret pointer as scalar value */ + additional_id = (TNC_UInt32)pointer; + result = send_message(state, additional_id, TNC_IMVID_ANY); + } + enumerator->destroy(enumerator); + + return result; +} + +static TNC_Result receive_message(TNC_IMCID imc_id, + TNC_ConnectionID connection_id, + TNC_UInt32 msg_flags, + chunk_t msg, + TNC_VendorID msg_vid, + TNC_MessageSubtype msg_subtype, + TNC_UInt32 src_imv_id, + TNC_UInt32 dst_imc_id) +{ + pa_tnc_msg_t *pa_tnc_msg; + pa_tnc_attr_t *attr; + imc_state_t *state; + enumerator_t *enumerator; + TNC_Result result; + bool fatal_error = FALSE; + + if (!imc_test) + { + DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name); + return TNC_RESULT_NOT_INITIALIZED; + } + + /* get current IMC state */ + if (!imc_test->get_state(imc_test, connection_id, &state)) + { + return TNC_RESULT_FATAL; + } + + /* parse received PA-TNC message and automatically handle any errors */ + result = imc_test->receive_message(imc_test, state, msg, msg_vid, + msg_subtype, src_imv_id, dst_imc_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); + + /* 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); + } + } + enumerator->destroy(enumerator); + pa_tnc_msg->destroy(pa_tnc_msg); + + /* if no error occurred then always return the same response */ + return fatal_error ? TNC_RESULT_FATAL : + send_message(state, dst_imc_id, src_imv_id); +} + +/** + * see section 3.8.4 of TCG TNC IF-IMC Specification 1.3 + */ +TNC_Result TNC_IMC_ReceiveMessage(TNC_IMCID imc_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(imc_id, connection_id, 0, chunk_create(msg, msg_len), + msg_vid, msg_subtype, 0, TNC_IMCID_ANY); +} + +/** + * see section 3.8.6 of TCG TNC IF-IMV Specification 1.3 + */ +TNC_Result TNC_IMC_ReceiveMessageLong(TNC_IMCID imc_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_imv_id, + TNC_UInt32 dst_imc_id) +{ + return receive_message(imc_id, connection_id, msg_flags, + chunk_create(msg, msg_len), msg_vid, msg_subtype, + src_imv_id, dst_imc_id); +} + +/** + * see section 3.8.7 of TCG TNC IF-IMC Specification 1.3 + */ +TNC_Result TNC_IMC_BatchEnding(TNC_IMCID imc_id, + TNC_ConnectionID connection_id) +{ + if (!imc_test) + { + DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name); + return TNC_RESULT_NOT_INITIALIZED; + } + return TNC_RESULT_SUCCESS; +} + +/** + * see section 3.8.8 of TCG TNC IF-IMC Specification 1.3 + */ +TNC_Result TNC_IMC_Terminate(TNC_IMCID imc_id) +{ + if (!imc_test) + { + DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name); + return TNC_RESULT_NOT_INITIALIZED; + } + imc_test->destroy(imc_test); + imc_test = NULL; + + return TNC_RESULT_SUCCESS; +} + +/** + * see section 4.2.8.1 of TCG TNC IF-IMC Specification 1.3 + */ +TNC_Result TNC_IMC_ProvideBindFunction(TNC_IMCID imc_id, + TNC_TNCC_BindFunctionPointer bind_function) +{ + if (!imc_test) + { + DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name); + return TNC_RESULT_NOT_INITIALIZED; + } + return imc_test->bind_functions(imc_test, bind_function); +} |