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strongswan/src/libimcv/plugins/imv_os/imv_os_agent.c

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/*
* Copyright (C) 2013-2015 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_agent.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 <generic/generic_attr_bool.h>
#include <generic/generic_attr_string.h>
#include <ietf/ietf_attr.h>
#include <ietf/ietf_attr_attr_request.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 "tcg/seg/tcg_seg_attr_max_size.h"
#include "tcg/seg/tcg_seg_attr_seg_env.h"
#include <tncif_names.h>
#include <tncif_pa_subtypes.h>
#include <pen/pen.h>
#include <utils/debug.h>
#define INSTALLED_PACKAGES_MAX_ATTR_SIZE 100000000
typedef struct private_imv_os_agent_t private_imv_os_agent_t;
typedef enum imv_os_attr_t imv_os_attr_t;
/* Subscribed PA-TNC message subtypes */
static pen_type_t msg_types[] = {
{ PEN_IETF, PA_SUBTYPE_IETF_OPERATING_SYSTEM }
};
static char unknown_source_str[] = "install_non_market_apps";
/**
* Flag set when corresponding attribute has been received
*/
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)
};
/**
* Private data of an imv_os_agent_t object.
*/
struct private_imv_os_agent_t {
/**
* Public members of imv_os_agent_t
*/
imv_agent_if_t public;
/**
* IMV agent responsible for generic functions
*/
imv_agent_t *agent;
/**
* IMV OS database
*/
imv_os_database_t *db;
};
METHOD(imv_agent_if_t, bind_functions, TNC_Result,
private_imv_os_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_os_agent_t *this, TNC_ConnectionID id,
TNC_ConnectionState new_state)
{
TNC_IMV_Action_Recommendation rec;
imv_state_t *state;
imv_session_t *session;
switch (new_state)
{
case TNC_CONNECTION_STATE_CREATE:
state = imv_os_state_create(id);
return this->agent->create_state(this->agent, state);
case TNC_CONNECTION_STATE_DELETE:
return this->agent->delete_state(this->agent, id);
case TNC_CONNECTION_STATE_ACCESS_ALLOWED:
case TNC_CONNECTION_STATE_ACCESS_ISOLATED:
case TNC_CONNECTION_STATE_ACCESS_NONE:
if (this->agent->get_state(this->agent, id, &state) && imcv_db)
{
session = state->get_session(state);
if (session->get_policy_started(session))
{
switch (new_state)
{
case TNC_CONNECTION_STATE_ACCESS_ALLOWED:
rec = TNC_IMV_ACTION_RECOMMENDATION_ALLOW;
break;
case TNC_CONNECTION_STATE_ACCESS_ISOLATED:
rec = TNC_IMV_ACTION_RECOMMENDATION_ISOLATE;
break;
case TNC_CONNECTION_STATE_ACCESS_NONE:
default:
rec = TNC_IMV_ACTION_RECOMMENDATION_NO_ACCESS;
}
imcv_db->add_recommendation(imcv_db, session, rec);
if (!imcv_db->policy_script(imcv_db, session, FALSE))
{
DBG1(DBG_IMV, "error in policy script stop");
}
}
}
/* fall through to default state */
default:
return this->agent->change_state(this->agent, id, new_state, NULL);
}
}
/**
* Process a received message
*/
static TNC_Result receive_msg(private_imv_os_agent_t *this, imv_state_t *state,
imv_msg_t *in_msg)
{
imv_msg_t *out_msg;
imv_os_state_t *os_state;
imv_session_t *session;
imv_os_info_t *os_info = NULL;
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;
uint16_t missing;
os_state = (imv_os_state_t*)state;
session = state->get_session(state);
os_info = session->get_os_info(session);
/* generate an outgoing PA-TNC message - we might need it */
out_msg = imv_msg_create_as_reply(in_msg);
/* parse received PA-TNC message and handle local and remote errors */
result = in_msg->receive(in_msg,out_msg, &fatal_error);
if (result != TNC_RESULT_SUCCESS)
{
out_msg->destroy(out_msg);
return result;
}
/* 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;
state->set_action_flags(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);
os_info->set_name(os_info, os_name);
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;
state->set_action_flags(state,
IMV_OS_ATTR_STRING_VERSION);
attr_cast = (ietf_attr_string_version_t*)attr;
os_version = attr_cast->get_version(attr_cast, NULL, NULL);
os_info->set_version(os_info, os_version);
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;
uint32_t major, minor;
state->set_action_flags(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;
state->set_action_flags(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:
{
generic_attr_bool_t *attr_cast;
os_fwd_status_t fwd_status;
state->set_action_flags(state,
IMV_OS_ATTR_FORWARDING_ENABLED);
attr_cast = (generic_attr_bool_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:
{
generic_attr_bool_t *attr_cast;
bool default_pwd_status;
state->set_action_flags(state,
IMV_OS_ATTR_FACTORY_DEFAULT_PWD_ENABLED);
attr_cast = (generic_attr_bool_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;
state->set_action_flags(state,
IMV_OS_ATTR_INSTALLED_PACKAGES);
if (!this->db)
{
break;
}
attr_cast = (ietf_attr_installed_packages_t*)attr;
e = attr_cast->create_enumerator(attr_cast);
status = this->db->check_packages(this->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;
}
missing = attr_cast->get_count(attr_cast);
os_state->set_missing(os_state, missing);
attr_cast->clear_packages(attr_cast);
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;
state->set_action_flags(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, unknown_source_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:
{
chunk_t value;
state->set_action_flags(state, IMV_OS_ATTR_DEVICE_ID);
value = attr->get_value(attr);
DBG1(DBG_IMV, "device ID is %.*s", value.len, value.ptr);
session->set_device_id(session, value);
break;
}
default:
break;
}
}
}
enumerator->destroy(enumerator);
if (fatal_error)
{
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
assessment = TRUE;
}
if (assessment)
{
os_state->set_handshake_state(os_state, IMV_OS_STATE_END);
result = out_msg->send_assessment(out_msg);
if (result == TNC_RESULT_SUCCESS)
{
result = this->agent->provide_recommendation(this->agent, state);
}
}
else
{
/* send PA-TNC message with the EXCL flag set */
result = out_msg->send(out_msg, TRUE);
}
out_msg->destroy(out_msg);
return result;
}
METHOD(imv_agent_if_t, receive_message, TNC_Result,
private_imv_os_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_os_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;
}
/**
* Build an IETF Attribute Request attribute for missing attributes
*/
static pa_tnc_attr_t* build_attr_request(uint32_t 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;
}
METHOD(imv_agent_if_t, batch_ending, TNC_Result,
private_imv_os_agent_t *this, TNC_ConnectionID id)
{
imv_msg_t *out_msg;
imv_state_t *state;
imv_session_t *session;
imv_workitem_t *workitem;
imv_os_state_t *os_state;
imv_os_handshake_state_t handshake_state;
pa_tnc_attr_t *attr;
TNC_IMVID imv_id;
TNC_Result result = TNC_RESULT_SUCCESS;
bool no_workitems = TRUE;
enumerator_t *enumerator;
uint32_t received;
if (!this->agent->get_state(this->agent, id, &state))
{
return TNC_RESULT_FATAL;
}
os_state = (imv_os_state_t*)state;
handshake_state = os_state->get_handshake_state(os_state);
received = state->get_action_flags(state);
session = state->get_session(state);
imv_id = this->agent->get_id(this->agent);
if (handshake_state == IMV_OS_STATE_END)
{
return TNC_RESULT_SUCCESS;
}
/* create an empty out message - we might need it */
out_msg = imv_msg_create(this->agent, state, id, imv_id, TNC_IMCID_ANY,
msg_types[0]);
if (handshake_state == IMV_OS_STATE_INIT)
{
size_t max_attr_size = INSTALLED_PACKAGES_MAX_ATTR_SIZE;
size_t max_seg_size;
seg_contract_t *contract;
seg_contract_manager_t *contracts;
char buf[BUF_LEN];
/* Determine maximum PA-TNC attribute segment size */
max_seg_size = state->get_max_msg_len(state)
- PA_TNC_HEADER_SIZE
- PA_TNC_ATTR_HEADER_SIZE
- TCG_SEG_ATTR_SEG_ENV_HEADER;
/* Announce support of PA-TNC segmentation to IMC */
contract = seg_contract_create(msg_types[0], max_attr_size,
max_seg_size, TRUE, imv_id, FALSE);
contract->get_info_string(contract, buf, BUF_LEN, TRUE);
DBG2(DBG_IMV, "%s", buf);
contracts = state->get_contracts(state);
contracts->add_contract(contracts, contract);
attr = tcg_seg_attr_max_size_create(max_attr_size, max_seg_size, TRUE);
out_msg->add_attribute(out_msg, attr);
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 (session->get_policy_started(session))
{
/* the policy script has already been started by another IMV */
handshake_state = IMV_OS_STATE_POLICY_START;
}
else
{
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 (!session->get_device_id(session, NULL))
{
session->set_device_id(session, chunk_empty);
}
if (imcv_db)
{
/* start the policy script */
if (!imcv_db->policy_script(imcv_db, session, TRUE))
{
DBG1(DBG_IMV, "error in policy script start");
}
}
else
{
DBG2(DBG_IMV, "no workitems available - "
"no evaluation possible");
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_ALLOW,
TNC_IMV_EVALUATION_RESULT_DONT_KNOW);
session->set_policy_started(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 this->agent->provide_recommendation(this->agent, 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)
{
enumerator = session->create_workitem_enumerator(session);
if (enumerator)
{
while (enumerator->enumerate(enumerator, &workitem))
{
if (workitem->get_imv_id(workitem) != TNC_IMVID_ANY)
{
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(unknown_source_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);
no_workitems = FALSE;
}
enumerator->destroy(enumerator);
if (no_workitems)
{
DBG2(DBG_IMV, "IMV %d has no workitems - "
"no evaluation requested", imv_id);
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_ALLOW,
TNC_IMV_EVALUATION_RESULT_DONT_KNOW);
}
handshake_state = IMV_OS_STATE_WORKITEMS;
os_state->set_handshake_state(os_state, handshake_state);
}
}
if (handshake_state == IMV_OS_STATE_WORKITEMS)
{
TNC_IMV_Evaluation_Result eval;
TNC_IMV_Action_Recommendation rec;
char result_str[BUF_LEN];
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_missing(os_state) > 0)
{
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(result_str, BUF_LEN, "processed %d packages: "
"%d not updated, %d blacklisted, %d ok, "
"%d unknown",
count, count_update, count_blacklist, count_ok,
count - count_update - count_blacklist - count_ok);
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;
snprintf(result_str, BUF_LEN, "unknown sources%s enabled",
fail ? "" : " not");
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;
snprintf(result_str, BUF_LEN, "forwarding%s enabled",
fail ? "" : " not");
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;
snprintf(result_str, BUF_LEN, "factory default password%s enabled",
fail ? "" : " not");
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)
{
os_state->set_handshake_state(os_state, IMV_OS_STATE_END);
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 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;
}
METHOD(imv_agent_if_t, solicit_recommendation, TNC_Result,
private_imv_os_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_os_agent_t *this)
{
DESTROY_IF(this->agent);
DESTROY_IF(this->db);
free(this);
}
/**
* Described in header.
*/
imv_agent_if_t *imv_os_agent_create(const char *name, TNC_IMVID id,
TNC_Version *actual_version)
{
private_imv_os_agent_t *this;
imv_agent_t *agent;
agent = imv_agent_create(name, msg_types, countof(msg_types), id,
actual_version);
if (!agent)
{
return NULL;
}
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 = agent,
.db = imv_os_database_create(imcv_db),
);
return &this->public;
}
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