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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 char rcsid[] =
"@(#) Header: print-ah.c,v 1.37 94/06/10 17:01:42 mccanne Exp (LBL)";
#endif
#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>
#include <stdio.h>
/* there's no standard definition so we are on our own */
struct ah {
u_int8_t ah_nxt; /* Next Header */
u_int8_t ah_len; /* Length of data, in 32bit */
u_int16_t ah_reserve; /* Reserved for future use */
u_int32_t ah_spi; /* Security parameter index */
/* variable size, 32bit bound*/ /* Authentication data */
};
struct newah {
u_int8_t ah_nxt; /* Next Header */
u_int8_t ah_len; /* Length of data + 1, in 32bit */
u_int16_t ah_reserve; /* Reserved for future use */
u_int32_t ah_spi; /* Security parameter index */
u_int32_t ah_seq; /* Sequence number field */
/* variable size, 32bit bound*/ /* Authentication data */
};
#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 = (struct ah *)bp;
ep = snapend; /* 'ep' points to the end of avaible data. */
if ((u_char *)(ah + 1) >= ep - sizeof(struct ah))
goto trunc;
sumlen = ah->ah_len << 2;
spi = (u_int32_t)ntohl(ah->ah_spi);
printf("AH(spi=%u", spi);
if (vflag)
printf(",sumlen=%d", sumlen);
printf(",seq=0x%x", (u_int32_t)ntohl(*(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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