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/*
* 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
static const char rcsid[] _U_ =
    "@(#) $Header: /tcpdump/master/tcpdump/print-rt6.c,v 1.27 2005-04-20 22:34:57 guy Exp $";
#endif

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#ifdef INET6

#include <tcpdump-stdinc.h>

#include <stdio.h>

#include "ip6.h"

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

int
rt6_print(register const u_char *bp, const u_char *bp2 _U_)
{
register const struct ip6_rthdr *dp;
register const struct ip6_rthdr0 *dp0;
register const u_char *ep;
int i, len;
register const struct in6_addr *addr;

dp = (struct ip6_rthdr *)bp;
len = dp->ip6r_len;

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

TCHECK(dp->ip6r_segleft);

printf("srcrt (len=%d", dp->ip6r_len); /*)*/
printf(", type=%d", dp->ip6r_type);
printf(", segleft=%d", dp->ip6r_segleft);

switch (dp->ip6r_type) {
#ifndef IPV6_RTHDR_TYPE_0
#define IPV6_RTHDR_TYPE_0 0
#endif
#ifndef IPV6_RTHDR_TYPE_2
#define IPV6_RTHDR_TYPE_2 2
#endif
case IPV6_RTHDR_TYPE_0:
case IPV6_RTHDR_TYPE_2: /* Mobile IPv6 ID-20 */
dp0 = (struct ip6_rthdr0 *)dp;

TCHECK(dp0->ip6r0_reserved);
if (dp0->ip6r0_reserved || vflag) {
printf(", rsv=0x%0x",
EXTRACT_32BITS(&dp0->ip6r0_reserved));
}

if (len % 2 == 1)
goto trunc;
len >>= 1;
addr = &dp0->ip6r0_addr[0];
for (i = 0; i < len; i++) {
if ((u_char *)(addr + 1) > ep)
goto trunc;

printf(", [%d]%s", i, ip6addr_string(addr));
addr++;
}
/*(*/
printf(") ");
return((dp0->ip6r0_len + 1) << 3);
break;
default:
goto trunc;
break;
}

 trunc:
fputs("[|srcrt]", stdout);
return -1;
}
#endif /* INET6 */
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