/*
 * Copyright (C) 2008-2009 Martin Willi
 *
 * Copyright (C) secunet Security Networks AG
 *
 * 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.
 */
/*
 * Copyright (C) 2015 Thomas Strangert
 * Polystar System AB, Sweden
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "eap_aka_3gpp_plugin.h"
#include "eap_aka_3gpp_card.h"
#include "eap_aka_3gpp_provider.h"
#include "eap_aka_3gpp_functions.h"

#include <daemon.h>

typedef struct private_eap_aka_3gpp_t private_eap_aka_3gpp_t;

/**
 * Private data of an eap_aka_3gpp_t object.
 */
struct private_eap_aka_3gpp_t {

	/**
	 * Public eap_aka_3gpp_plugin_t interface.
	 */
	eap_aka_3gpp_plugin_t public;

	/**
	 * USIM/EAP-AKA card
	 */
	eap_aka_3gpp_card_t *card;

	/**
	 * EAP-AKA provider
	 */
	eap_aka_3gpp_provider_t *provider;

	/**
	 * AKA functions
	 */
	eap_aka_3gpp_functions_t *functions;
};

METHOD(plugin_t, get_name, char*,
	private_eap_aka_3gpp_t *this)
{
	return "eap-aka-3gpp";
}

/**
 * Try to instantiate ea_aka_3gpp functions and card/provider backends
 */
static bool register_functions(private_eap_aka_3gpp_t *this,
							   plugin_feature_t *feature, bool reg, void *data)
{
	if (reg)
	{
		this->functions = eap_aka_3gpp_functions_create();
		if (!this->functions)
		{
			return FALSE;
		}
		this->card = eap_aka_3gpp_card_create(this->functions);
		this->provider = eap_aka_3gpp_provider_create(this->functions);
		return TRUE;
	}
	this->card->destroy(this->card);
	this->provider->destroy(this->provider);
	this->functions->destroy(this->functions);
	this->card = NULL;
	this->provider = NULL;
	this->functions = NULL;
	return TRUE;
}

/**
 * Callback providing our card to register
 */
static simaka_card_t* get_card(private_eap_aka_3gpp_t *this)
{
	return &this->card->card;
}

/**
 * Callback providing our provider to register
 */
static simaka_provider_t* get_provider(private_eap_aka_3gpp_t *this)
{
	return &this->provider->provider;
}

METHOD(plugin_t, get_features, int,
	private_eap_aka_3gpp_t *this, plugin_feature_t *features[])
{
	static plugin_feature_t f[] = {
		PLUGIN_CALLBACK((void*)register_functions, NULL),
			PLUGIN_PROVIDE(CUSTOM, "eap-aka-3gpp-functions"),
				PLUGIN_DEPENDS(CRYPTER, ENCR_AES_CBC, 16),
		PLUGIN_CALLBACK(simaka_manager_register, get_card),
			PLUGIN_PROVIDE(CUSTOM, "aka-card"),
				PLUGIN_DEPENDS(CUSTOM, "aka-manager"),
				PLUGIN_DEPENDS(CUSTOM, "eap-aka-3gpp-functions"),
		PLUGIN_CALLBACK(simaka_manager_register, get_provider),
			PLUGIN_PROVIDE(CUSTOM, "aka-provider"),
				PLUGIN_DEPENDS(CUSTOM, "aka-manager"),
				PLUGIN_DEPENDS(CUSTOM, "eap-aka-3gpp-functions"),
	};
	*features = f;
	return countof(f);
}

METHOD(plugin_t, destroy, void, private_eap_aka_3gpp_t *this)
{
	free(this);
}

/**
 * See header
 */
PLUGIN_DEFINE(eap_aka_3gpp)
{
	private_eap_aka_3gpp_t *this;

	INIT(this,
		.public = {
			.plugin = {
				.get_name = _get_name,
				.get_features = _get_features,
				.destroy = _destroy,
			},
		},
	);

	return &this->public.plugin;
}
