364 lines
9.4 KiB
C
364 lines
9.4 KiB
C
/*
|
|
* Copyright (C) 2012 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_os_state.h"
|
|
|
|
#include <imv/imv_agent.h>
|
|
#include <pa_tnc/pa_tnc_msg.h>
|
|
#include <ietf/ietf_attr.h>
|
|
#include <ietf/ietf_attr_attr_request.h>
|
|
#include <ietf/ietf_attr_installed_packages.h>
|
|
#include <ietf/ietf_attr_pa_tnc_error.h>
|
|
#include <ietf/ietf_attr_product_info.h>
|
|
#include <ietf/ietf_attr_string_version.h>
|
|
|
|
#include <tncif_names.h>
|
|
#include <tncif_pa_subtypes.h>
|
|
|
|
#include <pen/pen.h>
|
|
#include <utils/linked_list.h>
|
|
#include <debug.h>
|
|
|
|
/* IMV definitions */
|
|
|
|
static const char imv_name[] = "OS";
|
|
|
|
#define IMV_VENDOR_ID PEN_IETF
|
|
#define IMV_SUBTYPE PA_SUBTYPE_IETF_OPERATING_SYSTEM
|
|
|
|
static imv_agent_t *imv_os;
|
|
|
|
/*
|
|
* 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_os)
|
|
{
|
|
DBG1(DBG_IMV, "IMV \"%s\" has already been initialized", imv_name);
|
|
return TNC_RESULT_ALREADY_INITIALIZED;
|
|
}
|
|
imv_os = imv_agent_create(imv_name, IMV_VENDOR_ID, IMV_SUBTYPE,
|
|
imv_id, actual_version);
|
|
if (!imv_os)
|
|
{
|
|
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_os)
|
|
{
|
|
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_os_state_create(connection_id);
|
|
return imv_os->create_state(imv_os, state);
|
|
case TNC_CONNECTION_STATE_DELETE:
|
|
return imv_os->delete_state(imv_os, connection_id);
|
|
default:
|
|
return imv_os->change_state(imv_os, 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;
|
|
pen_type_t type;
|
|
linked_list_t *attr_list;
|
|
imv_state_t *state;
|
|
imv_os_state_t *os_state;
|
|
enumerator_t *enumerator;
|
|
TNC_Result result;
|
|
char *os_name = NULL;
|
|
chunk_t os_version = chunk_empty;
|
|
bool fatal_error, assessment = FALSE;
|
|
|
|
if (!imv_os)
|
|
{
|
|
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
|
|
return TNC_RESULT_NOT_INITIALIZED;
|
|
}
|
|
|
|
/* get current IMV state */
|
|
if (!imv_os->get_state(imv_os, connection_id, &state))
|
|
{
|
|
return TNC_RESULT_FATAL;
|
|
}
|
|
os_state = (imv_os_state_t*)state;
|
|
|
|
/* parse received PA-TNC message and automatically handle any errors */
|
|
result = imv_os->receive_message(imv_os, 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);
|
|
|
|
/* analyze PA-TNC attributes */
|
|
attr_list = linked_list_create();
|
|
enumerator = pa_tnc_msg->create_attribute_enumerator(pa_tnc_msg);
|
|
while (enumerator->enumerate(enumerator, &attr))
|
|
{
|
|
type = attr->get_type(attr);
|
|
|
|
if (type.vendor_id != PEN_IETF)
|
|
{
|
|
continue;
|
|
}
|
|
switch (type.type)
|
|
{
|
|
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);
|
|
DBG1(DBG_IMV, "operating system name is '%s'", os_name);
|
|
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);
|
|
if (os_version.len)
|
|
{
|
|
DBG1(DBG_IMV, "operating system version is '%.*s'",
|
|
os_version.len, os_version.ptr);
|
|
}
|
|
break;
|
|
}
|
|
case IETF_ATTR_INSTALLED_PACKAGES:
|
|
{
|
|
ietf_attr_installed_packages_t *attr_cast;
|
|
enumerator_t *e;
|
|
chunk_t name, version;
|
|
|
|
attr_cast = (ietf_attr_installed_packages_t*)attr;
|
|
e = attr_cast->create_enumerator(attr_cast);
|
|
while (e->enumerate(e, &name, &version))
|
|
{
|
|
DBG1(DBG_IMV, "package '%.*s' %.*s", name.len, name.ptr,
|
|
version.len, version.ptr);
|
|
}
|
|
e->destroy(e);
|
|
|
|
state->set_recommendation(state,
|
|
TNC_IMV_ACTION_RECOMMENDATION_ALLOW,
|
|
TNC_IMV_EVALUATION_RESULT_COMPLIANT);
|
|
assessment = TRUE;
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
|
|
if (os_name && os_version.len)
|
|
{
|
|
os_state->set_info(os_state, os_name, os_version);
|
|
|
|
DBG1(DBG_IMV, "requesting installed packages for '%s'",
|
|
os_state->get_info(os_state));
|
|
attr = ietf_attr_attr_request_create(PEN_IETF,
|
|
IETF_ATTR_INSTALLED_PACKAGES);
|
|
attr_list->insert_last(attr_list, attr);
|
|
}
|
|
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);
|
|
assessment = TRUE;
|
|
}
|
|
|
|
if (assessment)
|
|
{
|
|
attr_list->destroy_offset(attr_list, offsetof(pa_tnc_attr_t, destroy));
|
|
return imv_os->provide_recommendation(imv_os, connection_id, src_imc_id);
|
|
}
|
|
|
|
result = imv_os->send_message(imv_os, connection_id, TRUE, imv_id,
|
|
src_imc_id, attr_list);
|
|
attr_list->destroy(attr_list);
|
|
|
|
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)
|
|
{
|
|
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_os)
|
|
{
|
|
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
|
|
return TNC_RESULT_NOT_INITIALIZED;
|
|
}
|
|
return imv_os->provide_recommendation(imv_os, connection_id,
|
|
TNC_IMCID_ANY);
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
imv_state_t *state;
|
|
imv_os_state_t *os_state;
|
|
TNC_Result result = TNC_RESULT_SUCCESS;
|
|
|
|
if (!imv_os)
|
|
{
|
|
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
|
|
return TNC_RESULT_NOT_INITIALIZED;
|
|
}
|
|
|
|
/* get current IMV state */
|
|
if (!imv_os->get_state(imv_os, connection_id, &state))
|
|
{
|
|
return TNC_RESULT_FATAL;
|
|
}
|
|
os_state = (imv_os_state_t*)state;
|
|
|
|
if (os_state->get_info(os_state) == NULL)
|
|
{
|
|
pa_tnc_attr_t *attr;
|
|
linked_list_t *attr_list;
|
|
ietf_attr_attr_request_t *attr_cast;
|
|
|
|
attr_list = linked_list_create();
|
|
attr = ietf_attr_attr_request_create(PEN_IETF,
|
|
IETF_ATTR_PRODUCT_INFORMATION);
|
|
attr_cast = (ietf_attr_attr_request_t*)attr;
|
|
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_STRING_VERSION);
|
|
attr_list->insert_last(attr_list, attr);
|
|
result = imv_os->send_message(imv_os, connection_id, FALSE, imv_id,
|
|
TNC_IMCID_ANY, attr_list);
|
|
attr_list->destroy(attr_list);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* see section 3.8.9 of TCG TNC IF-IMV Specification 1.3
|
|
*/
|
|
TNC_Result TNC_IMV_Terminate(TNC_IMVID imv_id)
|
|
{
|
|
if (!imv_os)
|
|
{
|
|
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
|
|
return TNC_RESULT_NOT_INITIALIZED;
|
|
}
|
|
imv_os->destroy(imv_os);
|
|
imv_os = 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_os)
|
|
{
|
|
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
|
|
return TNC_RESULT_NOT_INITIALIZED;
|
|
}
|
|
return imv_os->bind_functions(imv_os, bind_function);
|
|
}
|