347 lines
8.3 KiB
C
347 lines
8.3 KiB
C
/*
|
|
* Copyright (C) 2006 Mike McCauley
|
|
* Copyright (C) 2010 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 "tnc_imv_manager.h"
|
|
#include "tnc_imv_recommendations.h"
|
|
|
|
#include <tnc/imv/imv_manager.h>
|
|
|
|
#include <tncifimv.h>
|
|
|
|
#include <debug.h>
|
|
#include <daemon.h>
|
|
#include <threading/mutex.h>
|
|
|
|
typedef struct private_tnc_imv_manager_t private_tnc_imv_manager_t;
|
|
|
|
|
|
/**
|
|
* Private data of an imv_manager_t object.
|
|
*/
|
|
struct private_tnc_imv_manager_t {
|
|
|
|
/**
|
|
* Public members of imv_manager_t.
|
|
*/
|
|
imv_manager_t public;
|
|
|
|
/**
|
|
* Linked list of IMVs
|
|
*/
|
|
linked_list_t *imvs;
|
|
|
|
/**
|
|
* Next IMV ID to be assigned
|
|
*/
|
|
TNC_IMVID next_imv_id;
|
|
|
|
/**
|
|
* Policy defining how to derive final recommendation from individual ones
|
|
*/
|
|
recommendation_policy_t policy;
|
|
};
|
|
|
|
METHOD(imv_manager_t, add, bool,
|
|
private_tnc_imv_manager_t *this, imv_t *imv)
|
|
{
|
|
TNC_Version version;
|
|
|
|
/* Initialize the IMV module */
|
|
imv->set_id(imv, this->next_imv_id);
|
|
if (imv->initialize(imv->get_id(imv), TNC_IFIMV_VERSION_1,
|
|
TNC_IFIMV_VERSION_1, &version) != TNC_RESULT_SUCCESS)
|
|
{
|
|
DBG1(DBG_TNC, "IMV \"%s\" failed to initialize", imv->get_name(imv));
|
|
return FALSE;
|
|
}
|
|
this->imvs->insert_last(this->imvs, imv);
|
|
this->next_imv_id++;
|
|
|
|
if (imv->provide_bind_function(imv->get_id(imv), TNC_TNCS_BindFunction)
|
|
!= TNC_RESULT_SUCCESS)
|
|
{
|
|
DBG1(DBG_TNC, "IMV \"%s\" could failed to obtain bind function",
|
|
imv->get_name(imv));
|
|
this->imvs->remove_last(this->imvs, (void**)&imv);
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
METHOD(imv_manager_t, remove_, imv_t*,
|
|
private_tnc_imv_manager_t *this, TNC_IMVID id)
|
|
{
|
|
enumerator_t *enumerator;
|
|
imv_t *imv, *removed_imv = NULL;
|
|
|
|
enumerator = this->imvs->create_enumerator(this->imvs);
|
|
while (enumerator->enumerate(enumerator, &imv))
|
|
{
|
|
if (id == imv->get_id(imv))
|
|
{
|
|
this->imvs->remove_at(this->imvs, enumerator);
|
|
removed_imv = imv;
|
|
break;
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
|
|
return removed_imv;
|
|
}
|
|
|
|
METHOD(imv_manager_t, is_registered, bool,
|
|
private_tnc_imv_manager_t *this, TNC_IMVID id)
|
|
{
|
|
enumerator_t *enumerator;
|
|
imv_t *imv;
|
|
bool found = FALSE;
|
|
|
|
enumerator = this->imvs->create_enumerator(this->imvs);
|
|
while (enumerator->enumerate(enumerator, &imv))
|
|
{
|
|
if (id == imv->get_id(imv))
|
|
{
|
|
found = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
|
|
return found;
|
|
}
|
|
|
|
METHOD(imv_manager_t, get_recommendation_policy, recommendation_policy_t,
|
|
private_tnc_imv_manager_t *this)
|
|
{
|
|
return this->policy;
|
|
}
|
|
|
|
METHOD(imv_manager_t, create_recommendations, recommendations_t*,
|
|
private_tnc_imv_manager_t *this)
|
|
{
|
|
return tnc_imv_recommendations_create(this->imvs);
|
|
}
|
|
|
|
METHOD(imv_manager_t, enforce_recommendation, bool,
|
|
private_tnc_imv_manager_t *this, TNC_IMV_Action_Recommendation rec,
|
|
TNC_IMV_Evaluation_Result eval)
|
|
{
|
|
char *group;
|
|
identification_t *id;
|
|
ike_sa_t *ike_sa;
|
|
auth_cfg_t *auth;
|
|
bool no_access = FALSE;
|
|
|
|
DBG1(DBG_TNC, "final recommendation is '%N' and evaluation is '%N'",
|
|
TNC_IMV_Action_Recommendation_names, rec,
|
|
TNC_IMV_Evaluation_Result_names, eval);
|
|
|
|
switch (rec)
|
|
{
|
|
case TNC_IMV_ACTION_RECOMMENDATION_ALLOW:
|
|
group = "allow";
|
|
break;
|
|
case TNC_IMV_ACTION_RECOMMENDATION_ISOLATE:
|
|
group = "isolate";
|
|
break;
|
|
case TNC_IMV_ACTION_RECOMMENDATION_NO_ACCESS:
|
|
case TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION:
|
|
default:
|
|
group = "no access";
|
|
no_access = TRUE;
|
|
break;
|
|
}
|
|
|
|
ike_sa = charon->bus->get_sa(charon->bus);
|
|
if (!ike_sa)
|
|
{
|
|
DBG1(DBG_TNC, "policy enforcement point did not find IKE_SA");
|
|
return FALSE;
|
|
}
|
|
|
|
id = ike_sa->get_other_id(ike_sa);
|
|
DBG0(DBG_TNC, "policy enforced on peer '%Y' is '%s'", id, group);
|
|
|
|
if (no_access)
|
|
{
|
|
return FALSE;
|
|
}
|
|
else
|
|
{
|
|
auth = ike_sa->get_auth_cfg(ike_sa, FALSE);
|
|
id = identification_create_from_string(group);
|
|
auth->add(auth, AUTH_RULE_GROUP, id);
|
|
DBG1(DBG_TNC, "policy enforcement point added group membership '%s'",
|
|
group);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
METHOD(imv_manager_t, notify_connection_change, void,
|
|
private_tnc_imv_manager_t *this, TNC_ConnectionID id,
|
|
TNC_ConnectionState state)
|
|
{
|
|
enumerator_t *enumerator;
|
|
imv_t *imv;
|
|
|
|
enumerator = this->imvs->create_enumerator(this->imvs);
|
|
while (enumerator->enumerate(enumerator, &imv))
|
|
{
|
|
if (imv->notify_connection_change)
|
|
{
|
|
imv->notify_connection_change(imv->get_id(imv), id, state);
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
}
|
|
|
|
METHOD(imv_manager_t, set_message_types, TNC_Result,
|
|
private_tnc_imv_manager_t *this, TNC_IMVID id,
|
|
TNC_MessageTypeList supported_types,
|
|
TNC_UInt32 type_count)
|
|
{
|
|
enumerator_t *enumerator;
|
|
imv_t *imv;
|
|
TNC_Result result = TNC_RESULT_FATAL;
|
|
|
|
enumerator = this->imvs->create_enumerator(this->imvs);
|
|
while (enumerator->enumerate(enumerator, &imv))
|
|
{
|
|
if (id == imv->get_id(imv))
|
|
{
|
|
imv->set_message_types(imv, supported_types, type_count);
|
|
result = TNC_RESULT_SUCCESS;
|
|
break;
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
return result;
|
|
}
|
|
|
|
METHOD(imv_manager_t, solicit_recommendation, void,
|
|
private_tnc_imv_manager_t *this, TNC_ConnectionID id)
|
|
{
|
|
enumerator_t *enumerator;
|
|
imv_t *imv;
|
|
|
|
enumerator = this->imvs->create_enumerator(this->imvs);
|
|
while (enumerator->enumerate(enumerator, &imv))
|
|
{
|
|
imv->solicit_recommendation(imv->get_id(imv), id);
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
}
|
|
|
|
METHOD(imv_manager_t, receive_message, void,
|
|
private_tnc_imv_manager_t *this, TNC_ConnectionID connection_id,
|
|
TNC_BufferReference message,
|
|
TNC_UInt32 message_len,
|
|
TNC_MessageType message_type)
|
|
{
|
|
bool type_supported = FALSE;
|
|
enumerator_t *enumerator;
|
|
imv_t *imv;
|
|
|
|
enumerator = this->imvs->create_enumerator(this->imvs);
|
|
while (enumerator->enumerate(enumerator, &imv))
|
|
{
|
|
if (imv->receive_message && imv->type_supported(imv, message_type))
|
|
{
|
|
type_supported = TRUE;
|
|
imv->receive_message(imv->get_id(imv), connection_id,
|
|
message, message_len, message_type);
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
if (!type_supported)
|
|
{
|
|
DBG2(DBG_TNC, "message type 0x%08x not supported by any IMV", message_type);
|
|
}
|
|
}
|
|
|
|
METHOD(imv_manager_t, batch_ending, void,
|
|
private_tnc_imv_manager_t *this, TNC_ConnectionID id)
|
|
{
|
|
enumerator_t *enumerator;
|
|
imv_t *imv;
|
|
|
|
enumerator = this->imvs->create_enumerator(this->imvs);
|
|
while (enumerator->enumerate(enumerator, &imv))
|
|
{
|
|
if (imv->batch_ending)
|
|
{
|
|
imv->batch_ending(imv->get_id(imv), id);
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
}
|
|
|
|
METHOD(imv_manager_t, destroy, void,
|
|
private_tnc_imv_manager_t *this)
|
|
{
|
|
imv_t *imv;
|
|
|
|
while (this->imvs->remove_last(this->imvs, (void**)&imv) == SUCCESS)
|
|
{
|
|
if (imv->terminate &&
|
|
imv->terminate(imv->get_id(imv)) != TNC_RESULT_SUCCESS)
|
|
{
|
|
DBG1(DBG_TNC, "IMV \"%s\" not terminated successfully",
|
|
imv->get_name(imv));
|
|
}
|
|
imv->destroy(imv);
|
|
}
|
|
this->imvs->destroy(this->imvs);
|
|
free(this);
|
|
}
|
|
|
|
/**
|
|
* Described in header.
|
|
*/
|
|
imv_manager_t* tnc_imv_manager_create(void)
|
|
{
|
|
private_tnc_imv_manager_t *this;
|
|
recommendation_policy_t policy;
|
|
|
|
INIT(this,
|
|
.public = {
|
|
.add = _add,
|
|
.remove = _remove_, /* avoid name conflict with stdio.h */
|
|
.is_registered = _is_registered,
|
|
.get_recommendation_policy = _get_recommendation_policy,
|
|
.create_recommendations = _create_recommendations,
|
|
.enforce_recommendation = _enforce_recommendation,
|
|
.notify_connection_change = _notify_connection_change,
|
|
.set_message_types = _set_message_types,
|
|
.solicit_recommendation = _solicit_recommendation,
|
|
.receive_message = _receive_message,
|
|
.batch_ending = _batch_ending,
|
|
.destroy = _destroy,
|
|
},
|
|
.imvs = linked_list_create(),
|
|
.next_imv_id = 1,
|
|
);
|
|
policy = enum_from_name(recommendation_policy_names,
|
|
lib->settings->get_str(lib->settings,
|
|
"charon.plugins.tnc-imv.recommendation_policy", "default"));
|
|
this->policy = (policy != -1) ? policy : RECOMMENDATION_POLICY_DEFAULT;
|
|
DBG1(DBG_TNC, "TNC recommendation policy is '%N'",
|
|
recommendation_policy_names, this->policy);
|
|
|
|
return &this->public;
|
|
}
|