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/* $NetBSD: print-ah.c,v 1.4 1996/05/20 00:41:16 fvdl Exp $ */
/*
* Copyright (c) 1988, 1989, 1990, 1991, 1992, 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
static const char rcsid[] =
"@(#) $Header: /tcpdump/master/tcpdump/print-ah.c,v 1.15 2001/09/17 21:57:54 fenner Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/param.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdio.h>
#include "ah.h"
#include "interface.h"
#include "addrtoname.h"
int
ah_print(register const u_char *bp, register const u_char *bp2)
{
register const struct ah *ah;
register const u_char *ep;
int sumlen;
u_int32_t spi;
ah = (const struct ah *)bp;
ep = snapend; /* 'ep' points to the end of available data. */
TCHECK(*ah);
sumlen = ah->ah_len << 2;
spi = (u_int32_t)ntohl(ah->ah_spi);
printf("AH(spi=0x%08x", spi);
if (vflag)
printf(",sumlen=%d", sumlen);
printf(",seq=0x%x", (u_int32_t)ntohl(*(const u_int32_t *)(ah + 1)));
if (bp + sizeof(struct ah) + sumlen > ep)
fputs("[truncated]", stdout);
fputs("): ", stdout);
return sizeof(struct ah) + sumlen;
trunc:
fputs("[|AH]", stdout);
return 65535;
}
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