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strongswan-ext/src/libimcv/plugins/imv_os/imv_os.c
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/*
* Copyright (C) 2012-2013 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.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include "imv_os_state.h"
#include "imv_os_database.h"
#include <imcv.h>
#include <imv/imv_agent.h>
#include <imv/imv_msg.h>
#include <ietf/ietf_attr.h>
#include <ietf/ietf_attr_attr_request.h>
#include <ietf/ietf_attr_default_pwd_enabled.h>
#include <ietf/ietf_attr_fwd_enabled.h>
#include <ietf/ietf_attr_installed_packages.h>
#include <ietf/ietf_attr_numeric_version.h>
#include <ietf/ietf_attr_op_status.h>
#include <ietf/ietf_attr_pa_tnc_error.h>
#include <ietf/ietf_attr_product_info.h>
#include <ietf/ietf_attr_remediation_instr.h>
#include <ietf/ietf_attr_string_version.h>
#include <ita/ita_attr.h>
#include <ita/ita_attr_get_settings.h>
#include <ita/ita_attr_settings.h>
#include <ita/ita_attr_angel.h>
#include <ita/ita_attr_device_id.h>
#include <tncif_names.h>
#include <tncif_pa_subtypes.h>
#include <pen/pen.h>
#include <collections/linked_list.h>
#include <utils/debug.h>
#include <utils/lexparser.h>
/* IMV definitions */
static const char imv_name[] = "OS";
static pen_type_t msg_types[] = {
{ PEN_IETF, PA_SUBTYPE_IETF_OPERATING_SYSTEM }
};
static imv_agent_t *imv_os;
static char non_market_apps_str[] = "install_non_market_apps";
/**
* Flag set when corresponding attribute has been received
*/
typedef enum imv_os_attr_t imv_os_attr_t;
enum imv_os_attr_t {
IMV_OS_ATTR_PRODUCT_INFORMATION = (1<<0),
IMV_OS_ATTR_STRING_VERSION = (1<<1),
IMV_OS_ATTR_NUMERIC_VERSION = (1<<2),
IMV_OS_ATTR_OPERATIONAL_STATUS = (1<<3),
IMV_OS_ATTR_FORWARDING_ENABLED = (1<<4),
IMV_OS_ATTR_FACTORY_DEFAULT_PWD_ENABLED = (1<<5),
IMV_OS_ATTR_DEVICE_ID = (1<<6),
IMV_OS_ATTR_MUST = (1<<7)-1,
IMV_OS_ATTR_INSTALLED_PACKAGES = (1<<7),
IMV_OS_ATTR_SETTINGS = (1<<8)
};
/**
* IMV OS database
*/
static imv_os_database_t *os_db;
/*
* 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, msg_types, countof(msg_types),
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;
}
/* attach OS database co-located with IMV database */
os_db = imv_os_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;
imv_session_t *session;
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:
if (imcv_db && imv_os->get_state(imv_os, connection_id, &state))
{
session = state->get_session(state);
imcv_db->policy_script(imcv_db, session, FALSE);
}
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(imv_state_t *state, imv_msg_t *in_msg)
{
imv_msg_t *out_msg;
imv_os_state_t *os_state;
enumerator_t *enumerator;
pa_tnc_attr_t *attr;
pen_type_t type;
TNC_Result result;
chunk_t os_name = chunk_empty;
chunk_t os_version = chunk_empty;
bool fatal_error = FALSE, assessment = FALSE;
os_state = (imv_os_state_t*)state;
/* 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;
}
out_msg = imv_msg_create_as_reply(in_msg);
/* 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_PRODUCT_INFORMATION:
{
ietf_attr_product_info_t *attr_cast;
pen_t vendor_id;
os_state->set_received(os_state,
IMV_OS_ATTR_PRODUCT_INFORMATION);
attr_cast = (ietf_attr_product_info_t*)attr;
os_name = attr_cast->get_info(attr_cast, &vendor_id, NULL);
if (vendor_id != PEN_IETF)
{
DBG1(DBG_IMV, "operating system name is '%.*s' "
"from vendor %N", os_name.len, os_name.ptr,
pen_names, vendor_id);
}
else
{
DBG1(DBG_IMV, "operating system name is '%.*s'",
os_name.len, os_name.ptr);
}
break;
}
case IETF_ATTR_STRING_VERSION:
{
ietf_attr_string_version_t *attr_cast;
os_state->set_received(os_state,
IMV_OS_ATTR_STRING_VERSION);
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_NUMERIC_VERSION:
{
ietf_attr_numeric_version_t *attr_cast;
u_int32_t major, minor;
os_state->set_received(os_state,
IMV_OS_ATTR_NUMERIC_VERSION);
attr_cast = (ietf_attr_numeric_version_t*)attr;
attr_cast->get_version(attr_cast, &major, &minor);
DBG1(DBG_IMV, "operating system numeric version is %d.%d",
major, minor);
break;
}
case IETF_ATTR_OPERATIONAL_STATUS:
{
ietf_attr_op_status_t *attr_cast;
op_status_t op_status;
op_result_t op_result;
time_t last_boot;
os_state->set_received(os_state,
IMV_OS_ATTR_OPERATIONAL_STATUS);
attr_cast = (ietf_attr_op_status_t*)attr;
op_status = attr_cast->get_status(attr_cast);
op_result = attr_cast->get_result(attr_cast);
last_boot = attr_cast->get_last_use(attr_cast);
DBG1(DBG_IMV, "operational status: %N, result: %N",
op_status_names, op_status, op_result_names, op_result);
DBG1(DBG_IMV, "last boot: %T", &last_boot, TRUE);
break;
}
case IETF_ATTR_FORWARDING_ENABLED:
{
ietf_attr_fwd_enabled_t *attr_cast;
os_fwd_status_t fwd_status;
os_state->set_received(os_state,
IMV_OS_ATTR_FORWARDING_ENABLED);
attr_cast = (ietf_attr_fwd_enabled_t*)attr;
fwd_status = attr_cast->get_status(attr_cast);
DBG1(DBG_IMV, "IPv4 forwarding is %N",
os_fwd_status_names, fwd_status);
if (fwd_status == OS_FWD_ENABLED)
{
os_state->set_os_settings(os_state,
OS_SETTINGS_FWD_ENABLED);
}
break;
}
case IETF_ATTR_FACTORY_DEFAULT_PWD_ENABLED:
{
ietf_attr_default_pwd_enabled_t *attr_cast;
bool default_pwd_status;
os_state->set_received(os_state,
IMV_OS_ATTR_FACTORY_DEFAULT_PWD_ENABLED);
attr_cast = (ietf_attr_default_pwd_enabled_t*)attr;
default_pwd_status = attr_cast->get_status(attr_cast);
DBG1(DBG_IMV, "factory default password is %sabled",
default_pwd_status ? "en":"dis");
if (default_pwd_status)
{
os_state->set_os_settings(os_state,
OS_SETTINGS_DEFAULT_PWD_ENABLED);
}
break;
}
case IETF_ATTR_INSTALLED_PACKAGES:
{
ietf_attr_installed_packages_t *attr_cast;
enumerator_t *e;
status_t status;
os_state->set_received(os_state,
IMV_OS_ATTR_INSTALLED_PACKAGES);
if (!os_db)
{
break;
}
attr_cast = (ietf_attr_installed_packages_t*)attr;
e = attr_cast->create_enumerator(attr_cast);
status = os_db->check_packages(os_db, os_state, e);
e->destroy(e);
if (status == FAILED)
{
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
assessment = TRUE;
}
break;
}
default:
break;
}
}
else if (type.vendor_id == PEN_ITA)
{
switch (type.type)
{
case ITA_ATTR_SETTINGS:
{
ita_attr_settings_t *attr_cast;
enumerator_t *e;
char *name;
chunk_t value;
os_state->set_received(os_state, IMV_OS_ATTR_SETTINGS);
attr_cast = (ita_attr_settings_t*)attr;
e = attr_cast->create_enumerator(attr_cast);
while (e->enumerate(e, &name, &value))
{
if (streq(name, non_market_apps_str) &&
chunk_equals(value, chunk_from_chars('1')))
{
os_state->set_os_settings(os_state,
OS_SETTINGS_UNKNOWN_SOURCE);
}
DBG1(DBG_IMV, "setting '%s'\n %.*s",
name, value.len, value.ptr);
}
e->destroy(e);
break;
}
case ITA_ATTR_DEVICE_ID:
{
imv_session_t *session;
int device_id;
chunk_t value;
os_state->set_received(os_state, IMV_OS_ATTR_DEVICE_ID);
value = attr->get_value(attr);
DBG1(DBG_IMV, "device ID is %.*s", value.len, value.ptr);
if (imcv_db)
{
session = state->get_session(state);
device_id = imcv_db->add_device(imcv_db, session, value);
os_state->set_device_id(os_state, device_id);
}
break;
}
case ITA_ATTR_START_ANGEL:
os_state->set_angel_count(os_state, TRUE);
break;
case ITA_ATTR_STOP_ANGEL:
os_state->set_angel_count(os_state, FALSE);
break;
default:
break;
}
}
}
enumerator->destroy(enumerator);
/**
* The IETF Product Information and String Version attributes
* are supposed to arrive in the same PA-TNC message
*/
if (os_name.len && os_version.len)
{
os_type_t os_type;
/* set the OS type, name and version */
os_type = os_type_from_name(os_name);
os_state->set_info(os_state,os_type, os_name, os_version);
if (imcv_db)
{
imcv_db->add_product(imcv_db, state->get_session(state),
os_state->get_info(os_state, NULL, NULL, NULL));
}
}
if (fatal_error)
{
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
assessment = TRUE;
}
if (assessment)
{
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return imv_os->provide_recommendation(imv_os, state);
}
/* send PA-TNC message with excl flag set */
result = out_msg->send(out_msg, TRUE);
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_os)
{
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imv_os->get_state(imv_os, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
in_msg = imv_msg_create_from_data(imv_os, 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_os)
{
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imv_os->get_state(imv_os, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
in_msg = imv_msg_create_from_long_data(imv_os, 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_os)
{
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imv_os->get_state(imv_os, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
return imv_os->provide_recommendation(imv_os, state);
}
/**
* Build an IETF Attribute Request attribute for missing attributes
*/
static pa_tnc_attr_t* build_attr_request(u_int received)
{
pa_tnc_attr_t *attr;
ietf_attr_attr_request_t *attr_cast;
attr = ietf_attr_attr_request_create(PEN_RESERVED, 0);
attr_cast = (ietf_attr_attr_request_t*)attr;
if (!(received & IMV_OS_ATTR_PRODUCT_INFORMATION) ||
!(received & IMV_OS_ATTR_STRING_VERSION))
{
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_PRODUCT_INFORMATION);
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_STRING_VERSION);
}
if (!(received & IMV_OS_ATTR_NUMERIC_VERSION))
{
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_NUMERIC_VERSION);
}
if (!(received & IMV_OS_ATTR_OPERATIONAL_STATUS))
{
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_OPERATIONAL_STATUS);
}
if (!(received & IMV_OS_ATTR_FORWARDING_ENABLED))
{
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_FORWARDING_ENABLED);
}
if (!(received & IMV_OS_ATTR_FACTORY_DEFAULT_PWD_ENABLED))
{
attr_cast->add(attr_cast, PEN_IETF,
IETF_ATTR_FACTORY_DEFAULT_PWD_ENABLED);
}
if (!(received & IMV_OS_ATTR_DEVICE_ID))
{
attr_cast->add(attr_cast, PEN_ITA, ITA_ATTR_DEVICE_ID);
}
return attr;
}
/**
* 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_msg_t *out_msg;
imv_state_t *state;
imv_workitem_t *workitem;
imv_os_state_t *os_state;
imv_os_handshake_state_t handshake_state;
pa_tnc_attr_t *attr;
TNC_Result result = TNC_RESULT_SUCCESS;
enumerator_t *enumerator;
imv_session_t *session;
u_int received;
if (!imv_os)
{
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imv_os->get_state(imv_os, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
os_state = (imv_os_state_t*)state;
handshake_state = os_state->get_handshake_state(os_state);
received = os_state->get_received(os_state);
session = state->get_session(state);
/* create an empty out message - we might need it */
out_msg = imv_msg_create(imv_os, state, connection_id, imv_id,
TNC_IMCID_ANY, msg_types[0]);
if (handshake_state == IMV_OS_STATE_INIT)
{
if ((received & IMV_OS_ATTR_MUST) != IMV_OS_ATTR_MUST)
{
/* create attribute request for missing mandatory attributes */
out_msg->add_attribute(out_msg, build_attr_request(received));
}
}
if (handshake_state < IMV_OS_STATE_POLICY_START)
{
if (((received & IMV_OS_ATTR_PRODUCT_INFORMATION) &&
(received & IMV_OS_ATTR_STRING_VERSION)) &&
((received & IMV_OS_ATTR_DEVICE_ID) ||
(handshake_state == IMV_OS_STATE_ATTR_REQ)))
{
if (imcv_db)
{
/* trigger the policy manager */
imcv_db->policy_script(imcv_db, session, TRUE);
}
handshake_state = IMV_OS_STATE_POLICY_START;
}
else if (handshake_state == IMV_OS_STATE_ATTR_REQ)
{
/**
* both the IETF Product Information and IETF String Version
* attribute should have been present
*/
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
/* send assessment */
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return imv_os->provide_recommendation(imv_os, state);
}
else
{
handshake_state = IMV_OS_STATE_ATTR_REQ;
}
os_state->set_handshake_state(os_state, handshake_state);
}
if (handshake_state == IMV_OS_STATE_POLICY_START && session)
{
enumerator = session->create_workitem_enumerator(session);
if (enumerator)
{
while (enumerator->enumerate(enumerator, &workitem))
{
if (workitem->get_imv_id(workitem) != 0)
{
continue;
}
switch (workitem->get_type(workitem))
{
case IMV_WORKITEM_PACKAGES:
attr = ietf_attr_attr_request_create(PEN_IETF,
IETF_ATTR_INSTALLED_PACKAGES);
out_msg->add_attribute(out_msg, attr);
break;
case IMV_WORKITEM_UNKNOWN_SOURCE:
attr = ita_attr_get_settings_create(non_market_apps_str);
out_msg->add_attribute(out_msg, attr);
break;
case IMV_WORKITEM_FORWARDING:
case IMV_WORKITEM_DEFAULT_PWD:
break;
default:
continue;
}
workitem->set_imv_id(workitem, imv_id);
}
enumerator->destroy(enumerator);
handshake_state = IMV_OS_STATE_WORKITEMS;
os_state->set_handshake_state(os_state, handshake_state);
}
}
if (handshake_state == IMV_OS_STATE_WORKITEMS && session)
{
TNC_IMV_Evaluation_Result eval;
TNC_IMV_Action_Recommendation rec;
char buf[BUF_LEN], *result_str;
bool fail;
enumerator = session->create_workitem_enumerator(session);
while (enumerator->enumerate(enumerator, &workitem))
{
if (workitem->get_imv_id(workitem) != imv_id)
{
continue;
}
eval = TNC_IMV_EVALUATION_RESULT_DONT_KNOW;
switch (workitem->get_type(workitem))
{
case IMV_WORKITEM_PACKAGES:
{
int count, count_update, count_blacklist, count_ok;
if (!(received & IMV_OS_ATTR_INSTALLED_PACKAGES) ||
os_state->get_angel_count(os_state))
{
continue;
}
os_state->get_count(os_state, &count, &count_update,
&count_blacklist, &count_ok);
fail = count_update || count_blacklist;
eval = fail ? TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MINOR :
TNC_IMV_EVALUATION_RESULT_COMPLIANT;
snprintf(buf, BUF_LEN, "processed %d packages: "
"%d not updated, %d blacklisted, %d ok, "
"%d not found",
count, count_update, count_blacklist, count_ok,
count - count_update - count_blacklist - count_ok);
result_str = buf;
break;
}
case IMV_WORKITEM_UNKNOWN_SOURCE:
if (!(received & IMV_OS_ATTR_SETTINGS))
{
continue;
}
fail = os_state->get_os_settings(os_state) &
OS_SETTINGS_UNKNOWN_SOURCE;
eval = fail ? TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MINOR :
TNC_IMV_EVALUATION_RESULT_COMPLIANT;
result_str = fail ? "unknown sources enabled" : "";
break;
case IMV_WORKITEM_FORWARDING:
if (!(received & IMV_OS_ATTR_FORWARDING_ENABLED))
{
continue;
}
fail = os_state->get_os_settings(os_state) &
OS_SETTINGS_FWD_ENABLED;
eval = fail ? TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MAJOR :
TNC_IMV_EVALUATION_RESULT_COMPLIANT;
result_str = fail ? "forwarding enabled" : "";
break;
case IMV_WORKITEM_DEFAULT_PWD:
if (!(received & IMV_OS_ATTR_FACTORY_DEFAULT_PWD_ENABLED))
{
continue;
}
fail = os_state->get_os_settings(os_state) &
OS_SETTINGS_DEFAULT_PWD_ENABLED;
eval = fail ? TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MAJOR :
TNC_IMV_EVALUATION_RESULT_COMPLIANT;
result_str = fail ? "default password enabled" : "";
break;
default:
continue;
}
if (eval != TNC_IMV_EVALUATION_RESULT_DONT_KNOW)
{
session->remove_workitem(session, enumerator);
rec = workitem->set_result(workitem, result_str, eval);
state->update_recommendation(state, rec, eval);
imcv_db->finalize_workitem(imcv_db, workitem);
workitem->destroy(workitem);
}
}
enumerator->destroy(enumerator);
/* finalized all workitems ? */
if (session->get_workitem_count(session, imv_id) == 0)
{
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return imv_os->provide_recommendation(imv_os, state);
}
}
/* send non-empty PA-TNC message with excl flag not set */
if (out_msg->get_attribute_count(out_msg))
{
result = out_msg->send(out_msg, FALSE);
}
out_msg->destroy(out_msg);
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;
}
DESTROY_IF(os_db);
os_db = NULL;
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);
}
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