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Converted all IMVs to use generic IF-IMV API

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This commit is contained in:
Andreas Steffen
2013-06-21 23:25:23 +02:00
parent ea2663ec03
commit c174c116fe
16 changed files with 1485 additions and 1409 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/libpts/plugins/imv_attestation/Makefile.am
+1
View File
@@ -16,6 +16,7 @@ imv_attestation_la_LIBADD = \
imv_attestation_la_SOURCES = imv_attestation.c \
imv_attestation_state.h imv_attestation_state.c \
imv_attestation_agent.h imv_attestation_agent.c \
imv_attestation_process.h imv_attestation_process.c \
imv_attestation_build.h imv_attestation_build.c
src/libpts/plugins/imv_attestation/imv_attestation.c
+5 -480
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@@ -1,5 +1,5 @@
/*
* Copyright (C) 2011-2012 Sansar Choinyambuu, Andreas Steffen
* Copyright (C) 2013 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
@@ -13,487 +13,12 @@
* for more details.
*/
#include "imv_attestation_state.h"
#include "imv_attestation_process.h"
#include "imv_attestation_build.h"
#include <imcv.h>
#include <imv/imv_agent.h>
#include <imv/imv_msg.h>
#include <ietf/ietf_attr.h>
#include <ietf/ietf_attr_pa_tnc_error.h>
#include <ietf/ietf_attr_product_info.h>
#include <ietf/ietf_attr_string_version.h>
#include <libpts.h>
#include <pts/pts.h>
#include <pts/pts_database.h>
#include <pts/pts_creds.h>
#include <tcg/tcg_attr.h>
#include <tncif_pa_subtypes.h>
#include <pen/pen.h>
#include <utils/debug.h>
#include <credentials/credential_manager.h>
#include <collections/linked_list.h>
/* IMV definitions */
#include "imv_attestation_agent.h"
static const char imv_name[] = "Attestation";
static const imv_agent_create_t imv_agent_create = imv_attestation_agent_create;
static pen_type_t msg_types[] = {
{ PEN_TCG, PA_SUBTYPE_TCG_PTS },
{ PEN_IETF, PA_SUBTYPE_IETF_OPERATING_SYSTEM }
};
/* include generic TGC TNC IF-IMV API code below */
static imv_agent_t *imv_attestation;
#include <imv/imv_if.h>
/**
* Supported PTS measurement algorithms
*/
static pts_meas_algorithms_t supported_algorithms = PTS_MEAS_ALGO_NONE;
/**
* Supported PTS Diffie Hellman Groups
*/
static pts_dh_group_t supported_dh_groups = PTS_DH_GROUP_NONE;
/**
* 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 3.8.1 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)
{
char *hash_alg, *dh_group, *cadir;
if (imv_attestation)
{
DBG1(DBG_IMV, "IMV \"%s\" has already been initialized", imv_name);
return TNC_RESULT_ALREADY_INITIALIZED;
}
if (!pts_meas_algo_probe(&supported_algorithms) ||
!pts_dh_group_probe(&supported_dh_groups))
{
return TNC_RESULT_FATAL;
}
imv_attestation = imv_agent_create(imv_name, msg_types, countof(msg_types),
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;
}
hash_alg = lib->settings->get_str(lib->settings,
"libimcv.plugins.imv-attestation.hash_algorithm", "sha256");
dh_group = lib->settings->get_str(lib->settings,
"libimcv.plugins.imv-attestation.dh_group", "ecp256");
if (!pts_meas_algo_update(hash_alg, &supported_algorithms) ||
!pts_dh_group_update(dh_group, &supported_dh_groups))
{
return TNC_RESULT_FATAL;
}
/* 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 PTS database co-located with IMV database */
pts_db = pts_database_create(imcv_db);
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_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:
default:
return imv_attestation->change_state(imv_attestation, connection_id,
new_state, NULL);
}
}
static TNC_Result send_message(imv_state_t *state, imv_msg_t *out_msg)
{
imv_attestation_state_t *attestation_state;
TNC_Result result;
attestation_state = (imv_attestation_state_t*)state;
if (imv_attestation_build(out_msg, attestation_state, supported_algorithms,
supported_dh_groups, pts_db))
{
result = out_msg->send(out_msg, TRUE);
}
else
{
result = TNC_RESULT_FATAL;
}
return result;
}
static TNC_Result receive_message(imv_state_t *state, imv_msg_t *in_msg)
{
imv_attestation_state_t *attestation_state;
imv_msg_t *out_msg;
enumerator_t *enumerator;
pa_tnc_attr_t *attr;
pen_type_t type;
TNC_Result result;
pts_t *pts;
chunk_t os_name = chunk_empty;
chunk_t os_version = chunk_empty;
bool fatal_error = FALSE;
/* parse received PA-TNC message and handle local and remote errors */
result = in_msg->receive(in_msg, &fatal_error);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
attestation_state = (imv_attestation_state_t*)state;
pts = attestation_state->get_pts(attestation_state);
out_msg = imv_msg_create_as_reply(in_msg);
out_msg->set_msg_type(out_msg, msg_types[0]);
/* analyze PA-TNC attributes */
enumerator = in_msg->create_attribute_enumerator(in_msg);
while (enumerator->enumerate(enumerator, &attr))
{
type = attr->get_type(attr);
if (type.vendor_id == PEN_IETF)
{
switch (type.type)
{
case IETF_ATTR_PA_TNC_ERROR:
{
ietf_attr_pa_tnc_error_t *error_attr;
pen_type_t error_code;
chunk_t msg_info;
error_attr = (ietf_attr_pa_tnc_error_t*)attr;
error_code = error_attr->get_error_code(error_attr);
if (error_code.vendor_id == PEN_TCG)
{
msg_info = error_attr->get_msg_info(error_attr);
DBG1(DBG_IMV, "received TCG-PTS error '%N'",
pts_error_code_names, error_code.type);
DBG1(DBG_IMV, "error information: %B", &msg_info);
result = TNC_RESULT_FATAL;
}
break;
}
case IETF_ATTR_PRODUCT_INFORMATION:
{
ietf_attr_product_info_t *attr_cast;
attr_cast = (ietf_attr_product_info_t*)attr;
os_name = attr_cast->get_info(attr_cast, NULL, NULL);
break;
}
case IETF_ATTR_STRING_VERSION:
{
ietf_attr_string_version_t *attr_cast;
attr_cast = (ietf_attr_string_version_t*)attr;
os_version = attr_cast->get_version(attr_cast, NULL, NULL);
break;
}
default:
break;
}
}
else if (type.vendor_id == PEN_TCG)
{
if (!imv_attestation_process(attr, out_msg, attestation_state,
supported_algorithms,supported_dh_groups, pts_db, pts_credmgr))
{
result = TNC_RESULT_FATAL;
break;
}
}
}
enumerator->destroy(enumerator);
if (os_name.len && os_version.len)
{
pts->set_platform_info(pts, os_name, os_version);
}
if (fatal_error || result != TNC_RESULT_SUCCESS)
{
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return imv_attestation->provide_recommendation(imv_attestation, state);
}
/* send PA-TNC message with excl flag set */
result = out_msg->send(out_msg, TRUE);
if (result != TNC_RESULT_SUCCESS)
{
out_msg->destroy(out_msg);
return result;
}
/* check the IMV state for the next PA-TNC attributes to send */
result = send_message(state, out_msg);
if (result != TNC_RESULT_SUCCESS)
{
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return imv_attestation->provide_recommendation(imv_attestation, state);
}
if (attestation_state->get_handshake_state(attestation_state) ==
IMV_ATTESTATION_STATE_END)
{
if (attestation_state->get_file_meas_request_count(attestation_state))
{
DBG1(DBG_IMV, "failure due to %d pending file measurements",
attestation_state->get_file_meas_request_count(attestation_state));
attestation_state->set_measurement_error(attestation_state,
IMV_ATTESTATION_ERROR_FILE_MEAS_PEND);
}
if (attestation_state->get_measurement_error(attestation_state))
{
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);
}
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return imv_attestation->provide_recommendation(imv_attestation, state);
}
out_msg->destroy(out_msg);
return result;
}
/**
* 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)
{
imv_state_t *state;
imv_msg_t *in_msg;
TNC_Result result;
if (!imv_attestation)
{
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imv_attestation->get_state(imv_attestation, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
in_msg = imv_msg_create_from_data(imv_attestation, state, connection_id,
msg_type, chunk_create(msg, msg_len));
result = receive_message(state, in_msg);
in_msg->destroy(in_msg);
return result;
}
/**
* 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)
{
imv_state_t *state;
imv_msg_t *in_msg;
TNC_Result result;
if (!imv_attestation)
{
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imv_attestation->get_state(imv_attestation, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
in_msg = imv_msg_create_from_long_data(imv_attestation, state, connection_id,
src_imc_id, dst_imv_id, msg_vid, msg_subtype,
chunk_create(msg, msg_len));
result =receive_message(state, in_msg);
in_msg->destroy(in_msg);
return result;
}
/**
* 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)
{
imv_state_t *state;
if (!imv_attestation)
{
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imv_attestation->get_state(imv_attestation, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
return imv_attestation->provide_recommendation(imv_attestation, state);
}
/**
* 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_attestation)
{
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_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);
pts_db = NULL;
DESTROY_IF(pts_credmgr);
pts_credmgr = NULL;
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 1.3
*/
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);
}
src/libpts/plugins/imv_attestation/imv_attestation_agent.c
+446
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@@ -0,0 +1,446 @@
/*
* Copyright (C) 2011-2012 Sansar Choinyambuu
* Copyright (C) 2011-2013 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_attestation_agent.h"
#include "imv_attestation_state.h"
#include "imv_attestation_process.h"
#include "imv_attestation_build.h"
#include <imcv.h>
#include <imv/imv_agent.h>
#include <imv/imv_msg.h>
#include <ietf/ietf_attr.h>
#include <ietf/ietf_attr_pa_tnc_error.h>
#include <ietf/ietf_attr_product_info.h>
#include <ietf/ietf_attr_string_version.h>
#include <libpts.h>
#include <pts/pts.h>
#include <pts/pts_database.h>
#include <pts/pts_creds.h>
#include <tcg/tcg_attr.h>
#include <tncif_pa_subtypes.h>
#include <pen/pen.h>
#include <utils/debug.h>
#include <credentials/credential_manager.h>
#include <collections/linked_list.h>
typedef struct private_imv_attestation_agent_t private_imv_attestation_agent_t;
/* Subscribed PA-TNC message subtypes */
static pen_type_t msg_types[] = {
{ PEN_TCG, PA_SUBTYPE_TCG_PTS },
{ PEN_IETF, PA_SUBTYPE_IETF_OPERATING_SYSTEM }
};
/**
* Private data of an imv_attestation_agent_t object.
*/
struct private_imv_attestation_agent_t {
/**
* Public members of imv_attestation_agent_t
*/
imv_agent_if_t public;
/**
* IMV agent responsible for generic functions
*/
imv_agent_t *agent;
/**
* Supported PTS measurement algorithms
*/
pts_meas_algorithms_t supported_algorithms;
/**
* Supported PTS Diffie Hellman Groups
*/
pts_dh_group_t supported_dh_groups;
/**
* PTS file measurement database
*/
pts_database_t *pts_db;
/**
* PTS credentials
*/
pts_creds_t *pts_creds;
/**
* PTS credential manager
*/
credential_manager_t *pts_credmgr;
};
METHOD(imv_agent_if_t, bind_functions, TNC_Result,
private_imv_attestation_agent_t *this, TNC_TNCS_BindFunctionPointer bind_function)
{
return this->agent->bind_functions(this->agent, bind_function);
}
METHOD(imv_agent_if_t, notify_connection_change, TNC_Result,
private_imv_attestation_agent_t *this, TNC_ConnectionID id,
TNC_ConnectionState new_state)
{
imv_state_t *state;
switch (new_state)
{
case TNC_CONNECTION_STATE_CREATE:
state = imv_attestation_state_create(id);
return this->agent->create_state(this->agent, state);
case TNC_CONNECTION_STATE_DELETE:
return this->agent->delete_state(this->agent, id);
default:
return this->agent->change_state(this->agent, id, new_state, NULL);
}
}
/**
* Build a message to be sent
*/
static TNC_Result send_message(private_imv_attestation_agent_t *this,
imv_state_t *state, imv_msg_t *out_msg)
{
imv_attestation_state_t *attestation_state;
TNC_Result result;
attestation_state = (imv_attestation_state_t*)state;
if (imv_attestation_build(out_msg, attestation_state,
this->supported_algorithms,
this->supported_dh_groups, this->pts_db))
{
result = out_msg->send(out_msg, TRUE);
}
else
{
result = TNC_RESULT_FATAL;
}
return result;
}
/**
* Process a received message
*/
static TNC_Result receive_msg(private_imv_attestation_agent_t *this,
imv_state_t *state, imv_msg_t *in_msg)
{
imv_attestation_state_t *attestation_state;
imv_msg_t *out_msg;
enumerator_t *enumerator;
pa_tnc_attr_t *attr;
pen_type_t type;
TNC_Result result;
pts_t *pts;
chunk_t os_name = chunk_empty;
chunk_t os_version = chunk_empty;
bool fatal_error = FALSE;
/* parse received PA-TNC message and handle local and remote errors */
result = in_msg->receive(in_msg, &fatal_error);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
attestation_state = (imv_attestation_state_t*)state;
pts = attestation_state->get_pts(attestation_state);
out_msg = imv_msg_create_as_reply(in_msg);
out_msg->set_msg_type(out_msg, msg_types[0]);
/* analyze PA-TNC attributes */
enumerator = in_msg->create_attribute_enumerator(in_msg);
while (enumerator->enumerate(enumerator, &attr))
{
type = attr->get_type(attr);
if (type.vendor_id == PEN_IETF)
{
switch (type.type)
{
case IETF_ATTR_PA_TNC_ERROR:
{
ietf_attr_pa_tnc_error_t *error_attr;
pen_type_t error_code;
chunk_t msg_info;
error_attr = (ietf_attr_pa_tnc_error_t*)attr;
error_code = error_attr->get_error_code(error_attr);
if (error_code.vendor_id == PEN_TCG)
{
msg_info = error_attr->get_msg_info(error_attr);
DBG1(DBG_IMV, "received TCG-PTS error '%N'",
pts_error_code_names, error_code.type);
DBG1(DBG_IMV, "error information: %B", &msg_info);
result = TNC_RESULT_FATAL;
}
break;
}
case IETF_ATTR_PRODUCT_INFORMATION:
{
ietf_attr_product_info_t *attr_cast;
attr_cast = (ietf_attr_product_info_t*)attr;
os_name = attr_cast->get_info(attr_cast, NULL, NULL);
break;
}
case IETF_ATTR_STRING_VERSION:
{
ietf_attr_string_version_t *attr_cast;
attr_cast = (ietf_attr_string_version_t*)attr;
os_version = attr_cast->get_version(attr_cast, NULL, NULL);
break;
}
default:
break;
}
}
else if (type.vendor_id == PEN_TCG)
{
if (!imv_attestation_process(attr, out_msg, attestation_state,
this->supported_algorithms, this->supported_dh_groups,
this->pts_db, this->pts_credmgr))
{
result = TNC_RESULT_FATAL;
break;
}
}
}
enumerator->destroy(enumerator);
if (os_name.len && os_version.len)
{
pts->set_platform_info(pts, os_name, os_version);
}
if (fatal_error || result != TNC_RESULT_SUCCESS)
{
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return this->agent->provide_recommendation(this->agent, state);
}
/* send PA-TNC message with excl flag set */
result = out_msg->send(out_msg, TRUE);
if (result != TNC_RESULT_SUCCESS)
{
out_msg->destroy(out_msg);
return result;
}
/* check the IMV state for the next PA-TNC attributes to send */
result = send_message(this, state, out_msg);
if (result != TNC_RESULT_SUCCESS)
{
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return this->agent->provide_recommendation(this->agent, state);
}
if (attestation_state->get_handshake_state(attestation_state) ==
IMV_ATTESTATION_STATE_END)
{
if (attestation_state->get_file_meas_request_count(attestation_state))
{
DBG1(DBG_IMV, "failure due to %d pending file measurements",
attestation_state->get_file_meas_request_count(attestation_state));
attestation_state->set_measurement_error(attestation_state,
IMV_ATTESTATION_ERROR_FILE_MEAS_PEND);
}
if (attestation_state->get_measurement_error(attestation_state))
{
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);
}
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return this->agent->provide_recommendation(this->agent, state);
}
out_msg->destroy(out_msg);
return result;
}
METHOD(imv_agent_if_t, receive_message, TNC_Result,
private_imv_attestation_agent_t *this, TNC_ConnectionID id,
TNC_MessageType msg_type, chunk_t msg)
{
imv_state_t *state;
imv_msg_t *in_msg;
TNC_Result result;
if (!this->agent->get_state(this->agent, id, &state))
{
return TNC_RESULT_FATAL;
}
in_msg = imv_msg_create_from_data(this->agent, state, id, msg_type, msg);
result = receive_msg(this, state, in_msg);
in_msg->destroy(in_msg);
return result;
}
METHOD(imv_agent_if_t, receive_message_long, TNC_Result,
private_imv_attestation_agent_t *this, TNC_ConnectionID id,
TNC_UInt32 src_imc_id, TNC_UInt32 dst_imv_id,
TNC_VendorID msg_vid, TNC_MessageSubtype msg_subtype, chunk_t msg)
{
imv_state_t *state;
imv_msg_t *in_msg;
TNC_Result result;
if (!this->agent->get_state(this->agent, id, &state))
{
return TNC_RESULT_FATAL;
}
in_msg = imv_msg_create_from_long_data(this->agent, state, id,
src_imc_id, dst_imv_id, msg_vid, msg_subtype, msg);
result = receive_msg(this, state, in_msg);
in_msg->destroy(in_msg);
return result;
}
METHOD(imv_agent_if_t, batch_ending, TNC_Result,
private_imv_attestation_agent_t *this, TNC_ConnectionID id)
{
return TNC_RESULT_SUCCESS;
}
METHOD(imv_agent_if_t, solicit_recommendation, TNC_Result,
private_imv_attestation_agent_t *this, TNC_ConnectionID id)
{
imv_state_t *state;
if (!this->agent->get_state(this->agent, id, &state))
{
return TNC_RESULT_FATAL;
}
return this->agent->provide_recommendation(this->agent, state);
}
METHOD(imv_agent_if_t, destroy, void,
private_imv_attestation_agent_t *this)
{
if (this->pts_creds)
{
this->pts_credmgr->remove_set(this->pts_credmgr,
this->pts_creds->get_set(this->pts_creds));
this->pts_creds->destroy(this->pts_creds);
}
DESTROY_IF(this->pts_db);
DESTROY_IF(this->pts_credmgr);
this->agent->destroy(this->agent);
free(this);
libpts_deinit();
}
/**
* Described in header.
*/
imv_agent_if_t *imv_attestation_agent_create(const char *name, TNC_IMVID id,
TNC_Version *actual_version)
{
private_imv_attestation_agent_t *this;
char *hash_alg, *dh_group, *cadir;
hash_alg = lib->settings->get_str(lib->settings,
"libimcv.plugins.imv-attestation.hash_algorithm", "sha256");
dh_group = lib->settings->get_str(lib->settings,
"libimcv.plugins.imv-attestation.dh_group", "ecp256");
cadir = lib->settings->get_str(lib->settings,
"libimcv.plugins.imv-attestation.cadir", NULL);
libpts_init();
INIT(this,
.public = {
.bind_functions = _bind_functions,
.notify_connection_change = _notify_connection_change,
.receive_message = _receive_message,
.receive_message_long = _receive_message_long,
.batch_ending = _batch_ending,
.solicit_recommendation = _solicit_recommendation,
.destroy = _destroy,
},
.agent = imv_agent_create(name, msg_types, countof(msg_types), id,
actual_version),
.supported_algorithms = PTS_MEAS_ALGO_NONE,
.supported_dh_groups = PTS_DH_GROUP_NONE,
.pts_credmgr = credential_manager_create(),
.pts_creds = pts_creds_create(cadir),
.pts_db = pts_database_create(imcv_db),
);
if (!this->agent ||
!pts_meas_algo_update(hash_alg, &this->supported_algorithms) ||
!pts_dh_group_update(dh_group, &this->supported_dh_groups))
{
destroy(this);
return NULL;
}
if (this->pts_creds)
{
this->pts_credmgr->add_set(this->pts_credmgr,
this->pts_creds->get_set(this->pts_creds));
}
return &this->public;
}
src/libpts/plugins/imv_attestation/imv_attestation_agent.h
+36
View File
@@ -0,0 +1,36 @@
/*
* Copyright (C) 2013 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 imv_attestation_agent_t imv_attestation_agent
* @{ @ingroup imv_attestation
*/
#ifndef IMV_ATTESTATION_AGENT_H_
#define IMV_ATTESTATION_AGENT_H_
#include <imv/imv_agent_if.h>
/**
* Creates a Attestation IMV agent
*
* @param name Name of the IMV
* @param id ID of the IMV
* @param actual_version TNC IF-IMV version
*/
imv_agent_if_t* imv_attestation_agent_create(const char* name, TNC_IMVID id,
TNC_Version *actual_version);
#endif /** IMV_ATTESTATION_AGENT_H_ @}*/