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strongswan-ext/src/libimcv/plugins/imv_attestation/imv_attestation.c
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/*
* Copyright (C) 2011 Sansar Choinyambuu
* 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_attestation_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 <ietf/ietf_attr_product_info.h>
#include <libpts.h>
#include <pts/pts_database.h>
#include <pts/pts_creds.h>
#include <pts/pts_error.h>
#include <tcg/tcg_attr.h>
#include <tcg/tcg_pts_attr_proto_caps.h>
#include <tcg/tcg_pts_attr_dh_nonce_params_req.h>
#include <tcg/tcg_pts_attr_dh_nonce_params_resp.h>
#include <tcg/tcg_pts_attr_dh_nonce_finish.h>
#include <tcg/tcg_pts_attr_meas_algo.h>
#include <tcg/tcg_pts_attr_get_tpm_version_info.h>
#include <tcg/tcg_pts_attr_tpm_version_info.h>
#include <tcg/tcg_pts_attr_get_aik.h>
#include <tcg/tcg_pts_attr_aik.h>
#include <tcg/tcg_pts_attr_req_funct_comp_evid.h>
#include <tcg/tcg_pts_attr_gen_attest_evid.h>
#include <tcg/tcg_pts_attr_simple_comp_evid.h>
#include <tcg/tcg_pts_attr_simple_evid_final.h>
#include <tcg/tcg_pts_attr_req_file_meas.h>
#include <tcg/tcg_pts_attr_file_meas.h>
#include <tcg/tcg_pts_attr_req_file_meta.h>
#include <tcg/tcg_pts_attr_unix_file_meta.h>
#include <tncif_pa_subtypes.h>
#include <pen/pen.h>
#include <debug.h>
#include <credentials/credential_manager.h>
/* IMV definitions */
static const char imv_name[] = "Attestation";
#define IMV_VENDOR_ID PEN_TCG
#define IMV_SUBTYPE PA_SUBTYPE_TCG_PTS
static imv_agent_t *imv_attestation;
/**
* Supported PTS measurement algorithms
*/
static pts_meas_algorithms_t supported_algorithms = 0;
/**
* PTS file measurement database
*/
static pts_database_t *pts_db;
/**
* PTS credentials
*/
static pts_creds_t *pts_creds;
/**
* PTS credential manager
*/
static credential_manager_t *pts_credmgr;
/**
* see section 3.7.1 of TCG TNC IF-IMV Specification 1.2
*/
TNC_Result TNC_IMV_Initialize(TNC_IMVID imv_id,
TNC_Version min_version,
TNC_Version max_version,
TNC_Version *actual_version)
{
char *hash_alg, *uri, *cadir;
if (imv_attestation)
{
DBG1(DBG_IMV, "IMV \"%s\" has already been initialized", imv_name);
return TNC_RESULT_ALREADY_INITIALIZED;
}
if (!pts_meas_probe_algorithms(&supported_algorithms))
{
return TNC_RESULT_FATAL;
}
imv_attestation = imv_agent_create(imv_name, IMV_VENDOR_ID, IMV_SUBTYPE,
imv_id, actual_version);
if (!imv_attestation)
{
return TNC_RESULT_FATAL;
}
libpts_init();
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;
}
/**
* Specify supported PTS measurement algorithms
*
* sha1 : PTS_MEAS_ALGO_SHA1
* sha256: PTS_MEAS_ALGO_SHA1 | PTS_MEAS_ALGO_SHA256
* sha384: PTS_MEAS_ALGO_SHA1 | PTS_MEAS_ALGO_SHA256 | PTS_MEAS_ALGO_SHA384
*
* we expect the PTS-IMC to select the strongest supported algorithm
*/
hash_alg = lib->settings->get_str(lib->settings,
"libimcv.plugins.imv-attestation.hash_algorithm", "sha256");
if (!strcaseeq(hash_alg, "sha384") && !strcaseeq(hash_alg, "sha2_384"))
{
/* remove SHA384 algorithm */
supported_algorithms &= ~PTS_MEAS_ALGO_SHA384;
}
if (strcaseeq(hash_alg, "sha1"))
{
/* remove SHA256 algorithm */
supported_algorithms &= ~PTS_MEAS_ALGO_SHA256;
}
/* create a PTS credential manager */
pts_credmgr = credential_manager_create();
/* create PTS credential set */
cadir = lib->settings->get_str(lib->settings,
"libimcv.plugins.imv-attestation.cadir", NULL);
pts_creds = pts_creds_create(cadir);
if (pts_creds)
{
pts_credmgr->add_set(pts_credmgr, pts_creds->get_set(pts_creds));
}
/* attach file measurement database */
uri = lib->settings->get_str(lib->settings,
"libimcv.plugins.imv-attestation.database", NULL);
pts_db = pts_database_create(uri);
return TNC_RESULT_SUCCESS;
}
/**
* see section 3.7.2 of TCG TNC IF-IMV Specification 1.2
*/
TNC_Result TNC_IMV_NotifyConnectionChange(TNC_IMVID imv_id,
TNC_ConnectionID connection_id,
TNC_ConnectionState new_state)
{
imv_state_t *state;
imv_attestation_state_t *attestation_state;
TNC_Result result;
if (!imv_attestation)
{
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_attestation_state_create(connection_id);
return imv_attestation->create_state(imv_attestation, state);
case TNC_CONNECTION_STATE_DELETE:
return imv_attestation->delete_state(imv_attestation, connection_id);
case TNC_CONNECTION_STATE_HANDSHAKE:
result = imv_attestation->change_state(imv_attestation, connection_id,
new_state, &state);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
attestation_state = (imv_attestation_state_t*)state;
/* TODO: Get some configurations */
return TNC_RESULT_SUCCESS;
default:
return imv_attestation->change_state(imv_attestation, connection_id,
new_state, NULL);
}
}
static TNC_Result send_message(TNC_ConnectionID connection_id)
{
pa_tnc_msg_t *msg;
pa_tnc_attr_t *attr;
pts_t *pts;
imv_state_t *state;
imv_attestation_state_t *attestation_state;
imv_attestation_handshake_state_t handshake_state;
TNC_Result result;
if (!imv_attestation->get_state(imv_attestation, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
attestation_state = (imv_attestation_state_t*)state;
handshake_state = attestation_state->get_handshake_state(attestation_state);
pts = attestation_state->get_pts(attestation_state);
msg = pa_tnc_msg_create();
/* Switch on the attribute type IMV has received */
switch (handshake_state)
{
case IMV_ATTESTATION_STATE_INIT:
{
pts_proto_caps_flag_t flags;
/* Send Request Protocol Capabilities attribute */
flags = pts->get_proto_caps(pts);
attr = tcg_pts_attr_proto_caps_create(flags, TRUE);
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
/* Send Measurement Algorithms attribute */
attr = tcg_pts_attr_meas_algo_create(supported_algorithms, FALSE);
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
attestation_state->set_handshake_state(attestation_state,
IMV_ATTESTATION_STATE_MEAS);
break;
}
case IMV_ATTESTATION_STATE_MEAS:
{
enumerator_t *enumerator;
u_int32_t delimiter = SOLIDUS_UTF;
char *platform_info, *pathname;
u_int16_t request_id;
int id, type;
bool is_dir;
attestation_state->set_handshake_state(attestation_state,
IMV_ATTESTATION_STATE_COMP_EVID);
/* Does the PTS-IMC have TPM support? */
if (pts->get_proto_caps(pts) & PTS_PROTO_CAPS_T)
{
/* Send Get TPM Version attribute */
attr = tcg_pts_attr_get_tpm_version_info_create();
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
/* Send Get AIK attribute */
attr = tcg_pts_attr_get_aik_create();
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
}
/* Get Platform and OS of the PTS-IMC */
platform_info = pts->get_platform_info(pts);
if (!pts_db || !platform_info)
{
DBG1(DBG_IMV, "%s%s%s not available",
(pts_db) ? "" : "pts database",
(!pts_db && !platform_info) ? "and" : "",
(platform_info) ? "" : "platform info");
break;
}
DBG1(DBG_IMV, "platform is '%s'", platform_info);
/* Send Request File Metadata attribute */
attr = tcg_pts_attr_req_file_meta_create(FALSE, SOLIDUS_UTF, "/etc/tnc_config");
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
/* Send Request File Measurement attribute */
enumerator = pts_db->create_file_enumerator(pts_db, platform_info);
if (!enumerator)
{
break;
}
while (enumerator->enumerate(enumerator, &id, &type, &pathname))
{
is_dir = (type != 0);
request_id = attestation_state->add_request(attestation_state,
id, is_dir);
DBG2(DBG_IMV, "measurement request %d for %s '%s'",
request_id, is_dir ? "directory" : "file", pathname);
attr = tcg_pts_attr_req_file_meas_create(is_dir, request_id,
delimiter, pathname);
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
}
enumerator->destroy(enumerator);
break;
}
case IMV_ATTESTATION_STATE_COMP_EVID:
{
pts_attr_req_funct_comp_evid_flag_t flags;
u_int32_t sub_comp_depth;
pts_qualifier_t qualifier;
pts_funct_comp_name_t name;
attestation_state->set_handshake_state(attestation_state,
IMV_ATTESTATION_STATE_END);
flags = PTS_REQ_FUNC_COMP_FLAG_PCR;
sub_comp_depth = 1;
qualifier.kernel = FALSE;
qualifier.sub_component = FALSE;
qualifier.type = PTS_FUNC_COMP_TYPE_ALL;
name = PTS_FUNC_COMP_NAME_BIOS;
/* Send Request Functional Component Evidence attribute */
attr = tcg_pts_attr_req_funct_comp_evid_create(flags, sub_comp_depth,
PEN_TCG, qualifier, name);
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
/* Send Generate Attestation Evidence attribute */
attr = tcg_pts_attr_gen_attest_evid_create();
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
break;
}
case IMV_ATTESTATION_STATE_IML:
DBG1(DBG_IMV, "Attestation IMV has nothing to send: \"%s\"",
handshake_state);
return TNC_RESULT_FATAL;
default:
DBG1(DBG_IMV, "Attestation IMV is in unknown state: \"%s\"",
handshake_state);
return TNC_RESULT_FATAL;
}
msg->build(msg);
result = imv_attestation->send_message(imv_attestation, connection_id,
msg->get_encoding(msg));
msg->destroy(msg);
return result;
}
/**
* see section 3.7.3 of TCG TNC IF-IMV Specification 1.2
*/
TNC_Result TNC_IMV_ReceiveMessage(TNC_IMVID imv_id,
TNC_ConnectionID connection_id,
TNC_BufferReference msg,
TNC_UInt32 msg_len,
TNC_MessageType msg_type)
{
pa_tnc_msg_t *pa_tnc_msg;
pa_tnc_attr_t *attr;
imv_state_t *state;
imv_attestation_state_t *attestation_state;
pts_t *pts;
enumerator_t *enumerator;
TNC_Result result;
bool fatal_error = FALSE;
bool measurement_error = FALSE;
if (!imv_attestation)
{
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED;
}
/* get current IMV state */
if (!imv_attestation->get_state(imv_attestation, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
attestation_state = (imv_attestation_state_t*)state;
pts = attestation_state->get_pts(attestation_state);
/* parse received PA-TNC message and automatically handle any errors */
result = imv_attestation->receive_message(imv_attestation, connection_id,
chunk_create(msg, msg_len), msg_type,
&pa_tnc_msg);
/* no parsed PA-TNC attributes available if an error occurred */
if (!pa_tnc_msg)
{
return result;
}
/* 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_IETF)
{
if (attr->get_type(attr) == IETF_ATTR_PA_TNC_ERROR)
{
ietf_attr_pa_tnc_error_t *error_attr;
pen_t error_vendor_id;
pa_tnc_error_code_t error_code;
chunk_t msg_info, attr_info;
u_int32_t offset;
error_attr = (ietf_attr_pa_tnc_error_t*)attr;
error_vendor_id = error_attr->get_vendor_id(error_attr);
error_code = error_attr->get_error_code(error_attr);
msg_info = error_attr->get_msg_info(error_attr);
if (error_vendor_id == PEN_IETF)
{
DBG1(DBG_IMV, "received PA-TNC error '%N' "
"concerning message %#B",
pa_tnc_error_code_names, error_code, &msg_info);
switch (error_code)
{
case PA_ERROR_INVALID_PARAMETER:
offset = error_attr->get_offset(error_attr);
DBG1(DBG_IMV, " occurred at offset of %u bytes",
offset);
break;
case PA_ERROR_ATTR_TYPE_NOT_SUPPORTED:
attr_info = error_attr->get_attr_info(error_attr);
DBG1(DBG_IMV, " unsupported attribute %#B",
&attr_info);
break;
default:
break;
}
}
else if (error_vendor_id == PEN_TCG)
{
DBG1(DBG_IMV, "received TCG-PTS error '%N'",
pts_error_code_names, error_code);
DBG1(DBG_IMV, "error information: %B", &msg_info);
}
fatal_error = TRUE;
}
else if (attr->get_type(attr) == IETF_ATTR_PRODUCT_INFORMATION)
{
ietf_attr_product_info_t *attr_cast;
char *platform_info;
attr_cast = (ietf_attr_product_info_t*)attr;
platform_info = attr_cast->get_info(attr_cast, NULL, NULL);
pts->set_platform_info(pts, platform_info);
}
}
else if (attr->get_vendor_id(attr) == PEN_TCG)
{
switch (attr->get_type(attr))
{
case TCG_PTS_PROTO_CAPS:
{
tcg_pts_attr_proto_caps_t *attr_cast;
pts_proto_caps_flag_t flags;
attr_cast = (tcg_pts_attr_proto_caps_t*)attr;
flags = attr_cast->get_flags(attr_cast);
pts->set_proto_caps(pts, flags);
break;
}
case TCG_PTS_MEAS_ALGO_SELECTION:
{
tcg_pts_attr_meas_algo_t *attr_cast;
pts_meas_algorithms_t selected_algorithm;
attr_cast = (tcg_pts_attr_meas_algo_t*)attr;
selected_algorithm = attr_cast->get_algorithms(attr_cast);
pts->set_meas_algorithm(pts, selected_algorithm);
break;
}
case TCG_PTS_TPM_VERSION_INFO:
{
tcg_pts_attr_tpm_version_info_t *attr_cast;
chunk_t tpm_version_info;
attr_cast = (tcg_pts_attr_tpm_version_info_t*)attr;
tpm_version_info = attr_cast->get_tpm_version_info(attr_cast);
pts->set_tpm_version_info(pts, tpm_version_info);
break;
}
case TCG_PTS_AIK:
{
tcg_pts_attr_aik_t *attr_cast;
certificate_t *aik, *issuer;
enumerator_t *e;
bool trusted = FALSE;
attr_cast = (tcg_pts_attr_aik_t*)attr;
aik = attr_cast->get_aik(attr_cast);
if (!aik)
{
/* TODO generate error attribute */
break;
}
if (aik->get_type(aik) == CERT_X509)
{
DBG1(DBG_IMV, "verifying AIK certificate");
e = pts_credmgr->create_trusted_enumerator(pts_credmgr,
KEY_ANY, aik->get_issuer(aik), FALSE);
while (e->enumerate(e, &issuer))
{
if (aik->issued_by(aik, issuer))
{
trusted = TRUE;
break;
}
}
e->destroy(e);
DBG1(DBG_IMV, "AIK certificate is %strusted",
trusted ? "" : "not ");
}
pts->set_aik(pts, aik);
break;
}
/* PTS-based Attestation Evidence */
case TCG_PTS_SIMPLE_COMP_EVID:
{
/** TODO: Implement saving the PCR number, Hash Algo = communicated one,
* PCR transform (truncate SHA256, SHA384), PCR before and after values
*/
break;
}
case TCG_PTS_SIMPLE_EVID_FINAL:
{
/** TODO: Implement construct Quote structure over saved values from
* TCG_PTS_SIMPLE_COMP_EVID and compare with received one
*/
break;
}
case TCG_PTS_FILE_MEAS:
{
tcg_pts_attr_file_meas_t *attr_cast;
u_int16_t request_id;
int file_count, file_id;
pts_meas_algorithms_t algo;
pts_file_meas_t *measurements;
char *platform_info;
enumerator_t *e_hash;
bool is_dir;
platform_info = pts->get_platform_info(pts);
if (!pts_db || !platform_info)
{
break;
}
attr_cast = (tcg_pts_attr_file_meas_t*)attr;
measurements = attr_cast->get_measurements(attr_cast);
algo = pts->get_meas_algorithm(pts);
request_id = measurements->get_request_id(measurements);
file_count = measurements->get_file_count(measurements);
DBG1(DBG_IMV, "measurement request %d returned %d file%s:",
request_id, file_count, (file_count == 1) ? "":"s");
if (!attestation_state->check_off_request(attestation_state,
request_id, &file_id, &is_dir))
{
DBG1(DBG_IMV, " no entry found for this request");
break;
}
/* check hashes from database against measurements */
e_hash = pts_db->create_hash_enumerator(pts_db,
platform_info, algo, file_id, is_dir);
if (!measurements->verify(measurements, e_hash, is_dir))
{
measurement_error = TRUE;
}
e_hash->destroy(e_hash);
break;
}
case TCG_PTS_UNIX_FILE_META:
{
tcg_pts_attr_file_meta_t *attr_cast;
int file_count;
pts_file_meta_t *metadata;
enumerator_t *e;
pts_file_metadata_t *entry;
attr_cast = (tcg_pts_attr_file_meta_t*)attr;
metadata = attr_cast->get_metadata(attr_cast);
file_count = metadata->get_file_count(metadata);
DBG1(DBG_IMV, "metadata request returned %d file%s:",
file_count, (file_count == 1) ? "":"s");
e = metadata->create_enumerator(metadata);
while(e->enumerate(e, &entry))
{
DBG1(DBG_IMV, "File name: %s", entry->filename);
DBG1(DBG_IMV, " type: %d", entry->type);
DBG1(DBG_IMV, " size: %d", entry->filesize);
DBG1(DBG_IMV, " create time: %s", ctime(&entry->create_time));
DBG1(DBG_IMV, " last modified: %s", ctime(&entry->last_modify_time));
DBG1(DBG_IMV, " last accessed: %s", ctime(&entry->last_access_time));
DBG1(DBG_IMV, " owner id: %d", entry->owner_id);
DBG1(DBG_IMV, " group id: %d", entry->group_id);
}
e->destroy(e);
break;
}
/* TODO: Not implemented yet */
case TCG_PTS_DH_NONCE_PARAMS_RESP:
case TCG_PTS_INTEG_MEAS_LOG:
/* Attributes using XML */
case TCG_PTS_TEMPL_REF_MANI_SET_META:
case TCG_PTS_VERIFICATION_RESULT:
case TCG_PTS_INTEG_REPORT:
/* On Windows only*/
case TCG_PTS_WIN_FILE_META:
case TCG_PTS_REGISTRY_VALUE:
/* Received on IMC side only*/
case TCG_PTS_REQ_PROTO_CAPS:
case TCG_PTS_DH_NONCE_PARAMS_REQ:
case TCG_PTS_DH_NONCE_FINISH:
case TCG_PTS_MEAS_ALGO:
case TCG_PTS_GET_TPM_VERSION_INFO:
case TCG_PTS_REQ_TEMPL_REF_MANI_SET_META:
case TCG_PTS_UPDATE_TEMPL_REF_MANI:
case TCG_PTS_GET_AIK:
case TCG_PTS_REQ_FUNCT_COMP_EVID:
case TCG_PTS_GEN_ATTEST_EVID:
case TCG_PTS_REQ_FILE_META:
case TCG_PTS_REQ_FILE_MEAS:
case TCG_PTS_REQ_INTEG_MEAS_LOG:
default:
DBG1(DBG_IMV, "received unsupported attribute '%N'",
tcg_attr_names, attr->get_type(attr));
break;
}
}
}
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_attestation->provide_recommendation(imv_attestation,
connection_id);
}
if (attestation_state->get_handshake_state(attestation_state) &
IMV_ATTESTATION_STATE_END)
{
if (attestation_state->get_request_count(attestation_state))
{
DBG1(DBG_IMV, "failure due to %d pending file measurements",
attestation_state->get_request_count(attestation_state));
measurement_error = TRUE;
}
if (measurement_error)
{
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_ISOLATE,
TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MAJOR);
}
else
{
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_ALLOW,
TNC_IMV_EVALUATION_RESULT_COMPLIANT);
}
return imv_attestation->provide_recommendation(imv_attestation,
connection_id);
}
return send_message(connection_id);
}
/**
* see section 3.7.4 of TCG TNC IF-IMV Specification 1.2
*/
TNC_Result TNC_IMV_SolicitRecommendation(TNC_IMVID imv_id,
TNC_ConnectionID connection_id)
{
if (!imv_attestation)
{
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED;
}
return imv_attestation->provide_recommendation(imv_attestation, connection_id);
}
/**
* see section 3.7.5 of TCG TNC IF-IMV Specification 1.2
*/
TNC_Result TNC_IMV_BatchEnding(TNC_IMVID imv_id,
TNC_ConnectionID connection_id)
{
imv_state_t *state;
imv_attestation_state_t *attestation_state;
if (!imv_attestation)
{
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED;
}
/* get current IMV state */
if (!imv_attestation->get_state(imv_attestation, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
attestation_state = (imv_attestation_state_t*)state;
/* Check if IMV has to initiate the PA-TNC exchange */
if (attestation_state->get_handshake_state(attestation_state) ==
IMV_ATTESTATION_STATE_INIT)
{
return send_message(connection_id);
}
return TNC_RESULT_SUCCESS;
}
/**
* see section 3.7.6 of TCG TNC IF-IMV Specification 1.2
*/
TNC_Result TNC_IMV_Terminate(TNC_IMVID imv_id)
{
if (!imv_attestation)
{
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (pts_creds)
{
pts_credmgr->remove_set(pts_credmgr, pts_creds->get_set(pts_creds));
pts_creds->destroy(pts_creds);
}
DESTROY_IF(pts_db);
DESTROY_IF(pts_credmgr);
libpts_deinit();
imv_attestation->destroy(imv_attestation);
imv_attestation = NULL;
return TNC_RESULT_SUCCESS;
}
/**
* see section 4.2.8.1 of TCG TNC IF-IMV Specification 1.2
*/
TNC_Result TNC_IMV_ProvideBindFunction(TNC_IMVID imv_id,
TNC_TNCS_BindFunctionPointer bind_function)
{
if (!imv_attestation)
{
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED;
}
return imv_attestation->bind_functions(imv_attestation, bind_function);
}
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