NetBSD/usr.sbin/tcpdump/print-esp.c

/*	$NetBSD: print-esp.c,v 1.4 2001/01/28 10:05:06 itojun Exp $	*/

/*
 * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that: (1) source code distributions
 * retain the above copyright notice and this paragraph in its entirety, (2)
 * distributions including binary code include the above copyright notice and
 * this paragraph in its entirety in the documentation or other materials
 * provided with the distribution, and (3) all advertising materials mentioning
 * features or use of this software display the following acknowledgement:
 * ``This product includes software developed by the University of California,
 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
 * the University nor the names of its contributors may be used to endorse
 * or promote products derived from this software without specific prior
 * written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
#if 0
static const char rcsid[] =
    "@(#) /master/usr.sbin/tcpdump/tcpdump/print-icmp.c,v 2.1 1995/02/03 18:14:42 polk Exp (LBL)";
#else
#include <sys/cdefs.h>
__RCSID("$NetBSD: print-esp.c,v 1.4 2001/01/28 10:05:06 itojun Exp $");
#endif
#endif

#include <string.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>

#include <net/route.h>
#include <net/if.h>

#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#include <netinet/ip_var.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <netinet/tcp.h>

#ifdef CRYPTO
#include <des.h>
#include <blowfish.h>
#ifdef HAVE_RC5_H
#include <rc5.h>
#endif
#ifdef HAVE_CAST_H
#include <cast.h>
#endif
#endif

#include <stdio.h>

#ifdef INET6
#include <netinet/ip6.h>
#endif
#include <netinet6/esp.h>

#include "interface.h"
#include "addrtoname.h"

int
esp_print(register const u_char *bp, register const u_char *bp2, int *nhdr)
{
	register const struct esp *esp;
	register const u_char *ep;
	u_int32_t spi;

	esp = (struct esp *)bp;
	spi = (u_int32_t)ntohl(esp->esp_spi);

	/* 'ep' points to the end of available data. */
	ep = snapend;

	if ((u_char *)(esp + 1) >= ep - sizeof(struct esp)) {
		fputs("[|ESP]", stdout);
		goto fail;
	}
	printf("ESP(spi=0x%08x", spi);
	printf(",seq=0x%x", (u_int32_t)ntohl(*(u_int32_t *)(esp + 1)));
	printf(")");

fail:
	if (nhdr)
		*nhdr = -1;
	return 65536;
}