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$OpenBSD$

/*	$OpenBSD: handle_message_reject.c,v 1.4 2001/01/28 22:45:09 niklas Exp $	*/

/*
 * Copyright 1997-2000 Niels Provos <provos@citi.umich.edu>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Niels Provos.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
/*
 * handle_message_reject:
 * receive a MESSAGE_REJECT packet; return -1 on failure, 0 on success
 *
 */

#ifndef lint
static char rcsid[] = "$OpenBSD: handle_message_reject.c,v 1.4 2001/01/28 22:45:09 niklas Exp $";
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#include "photuris.h"
#include "packets.h"
#include "state.h"
#include "cookie.h"
#include "buffer.h"
#include "packet.h"
#include "schedule.h"
#include "log.h"

int
handle_message_reject(u_char *packet, int size, char *address)
{
	struct message_reject *header;
	struct stateob *st;

	if (size != MESSAGE_REJECT_PACKET_SIZE)
	     return -1;	/* packet too small/big  */

	header = (struct message_reject *) packet;

	if ((st = state_find_cookies(address, header->icookie, 
				     header->rcookie)) == NULL) {
	     log_print("No state for MESSAGE_REJECT message from %s", 
		       address);
	     return -1;
	}
	
	log_print("Received MESSAGE_REJECT from %s on message type %d "
		  "offending offset %d", address, header->badtype,
		  header->offset); 
	return 0;
}