/**
 * @file retransmit_job.c
 * 
 * @brief Implementation of retransmit_job_t.
 * 
 */

/*
 * Copyright (C) 2005-2007 Martin Willi
 * Copyright (C) 2005 Jan Hutter
 * 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 "retransmit_job.h"

#include <daemon.h>

typedef struct private_retransmit_job_t private_retransmit_job_t;

/**
 * Private data of an retransmit_job_t Object.
 */
struct private_retransmit_job_t {
	/**
	 * Public retransmit_job_t interface.
	 */
	retransmit_job_t public;
	
	/**
	 * Message ID of the request to resend.
	 */
	u_int32_t message_id;

	/**
	 * ID of the IKE_SA which the message belongs to.
	 */
	ike_sa_id_t *ike_sa_id;
};

/**
 * Implements job_t.get_type.
 */
static job_type_t get_type(private_retransmit_job_t *this)
{
	return RETRANSMIT;
}

/**
 * Implementation of job_t.execute.
 */
static status_t execute(private_retransmit_job_t *this)
{
	ike_sa_t *ike_sa;
	
	ike_sa = charon->ike_sa_manager->checkout(charon->ike_sa_manager,
											  this->ike_sa_id);
	if (ike_sa)
	{
		if (ike_sa->retransmit(ike_sa, this->message_id) == DESTROY_ME)
		{
			/* retransmitted to many times, giving up */
			charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager,
														ike_sa);
		}
		else
		{
			charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
		}
	}
	return DESTROY_ME;
}

/**
 * Implements job_t.destroy.
 */
static void destroy(private_retransmit_job_t *this)
{
	this->ike_sa_id->destroy(this->ike_sa_id);
	free(this);
}

/*
 * Described in header.
 */
retransmit_job_t *retransmit_job_create(u_int32_t message_id,ike_sa_id_t *ike_sa_id)
{
	private_retransmit_job_t *this = malloc_thing(private_retransmit_job_t);
	
	/* interface functions */
	this->public.job_interface.get_type = (job_type_t (*) (job_t *)) get_type;
	this->public.job_interface.execute = (status_t (*) (job_t *)) execute;
	this->public.job_interface.destroy = (void (*) (job_t *)) destroy;

	/* private variables */
	this->message_id = message_id;
	this->ike_sa_id = ike_sa_id->clone(ike_sa_id);
	
	return &this->public;
}
