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/*
* 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_imc_manager.h"
#include <tnc/imc/imc_manager.h>
#include <tnc/tncifimc.h>
#include <debug.h>
#include <library.h>
#include <utils/linked_list.h>
typedef struct private_tnc_imc_manager_t private_tnc_imc_manager_t;
/**
* Private data of an imc_manager_t object.
*/
struct private_tnc_imc_manager_t {
/**
* Public members of imc_manager_t.
*/
imc_manager_t public;
/**
* Linked list of IMCs
*/
linked_list_t *imcs;
/**
* Next IMC ID to be assigned
*/
TNC_IMCID next_imc_id;
};
METHOD(imc_manager_t, add, bool,
private_tnc_imc_manager_t *this, imc_t *imc)
{
TNC_Version version;
/* Initialize the module */
imc->set_id(imc, this->next_imc_id);
if (imc->initialize(imc->get_id(imc), TNC_IFIMC_VERSION_1,
TNC_IFIMC_VERSION_1, &version) != TNC_RESULT_SUCCESS)
{
DBG1(DBG_TNC, "IMC \"%s\" failed to initialize", imc->get_name(imc));
return FALSE;
}
this->imcs->insert_last(this->imcs, imc);
this->next_imc_id++;
if (imc->provide_bind_function(imc->get_id(imc), TNC_TNCC_BindFunction)
!= TNC_RESULT_SUCCESS)
{
DBG1(DBG_TNC, "IMC \"%s\" failed to obtain bind function",
imc->get_name(imc));
this->imcs->remove_last(this->imcs, (void**)&imc);
return FALSE;
}
return TRUE;
}
METHOD(imc_manager_t, remove_, imc_t*,
private_tnc_imc_manager_t *this, TNC_IMCID id)
{
enumerator_t *enumerator;
imc_t *imc;
enumerator = this->imcs->create_enumerator(this->imcs);
while (enumerator->enumerate(enumerator, &imc))
{
if (id == imc->get_id(imc))
{
this->imcs->remove_at(this->imcs, enumerator);
return imc;
}
}
enumerator->destroy(enumerator);
return NULL;
}
METHOD(imc_manager_t, get_preferred_language, char*,
private_tnc_imc_manager_t *this)
{
return lib->settings->get_str(lib->settings,
"charon.plugins.tnc-imc.preferred_language", "en");
}
METHOD(imc_manager_t, notify_connection_change, void,
private_tnc_imc_manager_t *this, TNC_ConnectionID id,
TNC_ConnectionState state)
{
enumerator_t *enumerator;
imc_t *imc;
enumerator = this->imcs->create_enumerator(this->imcs);
while (enumerator->enumerate(enumerator, &imc))
{
if (imc->notify_connection_change)
{
imc->notify_connection_change(imc->get_id(imc), id, state);
}
}
enumerator->destroy(enumerator);
}
METHOD(imc_manager_t, begin_handshake, void,
private_tnc_imc_manager_t *this, TNC_ConnectionID id)
{
enumerator_t *enumerator;
imc_t *imc;
enumerator = this->imcs->create_enumerator(this->imcs);
while (enumerator->enumerate(enumerator, &imc))
{
imc->begin_handshake(imc->get_id(imc), id);
}
enumerator->destroy(enumerator);
}
METHOD(imc_manager_t, set_message_types, TNC_Result,
private_tnc_imc_manager_t *this, TNC_IMCID id,
TNC_MessageTypeList supported_types,
TNC_UInt32 type_count)
{
enumerator_t *enumerator;
imc_t *imc;
TNC_Result result = TNC_RESULT_FATAL;
enumerator = this->imcs->create_enumerator(this->imcs);
while (enumerator->enumerate(enumerator, &imc))
{
if (id == imc->get_id(imc))
{
imc->set_message_types(imc, supported_types, type_count);
result = TNC_RESULT_SUCCESS;
break;
}
}
enumerator->destroy(enumerator);
return result;
}
METHOD(imc_manager_t, receive_message, void,
private_tnc_imc_manager_t *this, TNC_ConnectionID connection_id,
TNC_BufferReference message,
TNC_UInt32 message_len,
TNC_MessageType message_type)
{
enumerator_t *enumerator;
imc_t *imc;
enumerator = this->imcs->create_enumerator(this->imcs);
while (enumerator->enumerate(enumerator, &imc))
{
if (imc->receive_message && imc->type_supported(imc, message_type))
{
imc->receive_message(imc->get_id(imc), connection_id,
message, message_len, message_type);
}
}
enumerator->destroy(enumerator);
}
METHOD(imc_manager_t, batch_ending, void,
private_tnc_imc_manager_t *this, TNC_ConnectionID id)
{
enumerator_t *enumerator;
imc_t *imc;
enumerator = this->imcs->create_enumerator(this->imcs);
while (enumerator->enumerate(enumerator, &imc))
{
if (imc->batch_ending)
{
imc->batch_ending(imc->get_id(imc), id);
}
}
enumerator->destroy(enumerator);
}
METHOD(imc_manager_t, destroy, void,
private_tnc_imc_manager_t *this)
{
imc_t *imc;
while (this->imcs->remove_last(this->imcs, (void**)&imc) == SUCCESS)
{
if (imc->terminate &&
imc->terminate(imc->get_id(imc)) != TNC_RESULT_SUCCESS)
{
DBG1(DBG_TNC, "IMC \"%s\" not terminated successfully",
imc->get_name(imc));
}
imc->destroy(imc);
}
this->imcs->destroy(this->imcs);
free(this);
}
/**
* Described in header.
*/
imc_manager_t* tnc_imc_manager_create(void)
{
private_tnc_imc_manager_t *this;
INIT(this,
.public = {
.add = _add,
.remove = _remove_, /* avoid name conflict with stdio.h */
.get_preferred_language = _get_preferred_language,
.notify_connection_change = _notify_connection_change,
.begin_handshake = _begin_handshake,
.set_message_types = _set_message_types,
.receive_message = _receive_message,
.batch_ending = _batch_ending,
.destroy = _destroy,
},
.imcs = linked_list_create(),
.next_imc_id = 1,
);
return &this->public;
}
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