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/*
* Copyright (c) 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-ripng.c,v 1.18 2005-01-04 00:15:54 guy Exp $";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef INET6
#include <tcpdump-stdinc.h>
#include <stdio.h>
#include "route6d.h"
#include "interface.h"
#include "addrtoname.h"
#include "extract.h"
#if !defined(IN6_IS_ADDR_UNSPECIFIED) && !defined(_MSC_VER) /* MSVC inline */
static int IN6_IS_ADDR_UNSPECIFIED(const struct in6_addr *addr)
{
static const struct in6_addr in6addr_any; /* :: */
return (memcmp(addr, &in6addr_any, sizeof(*addr)) == 0);
}
#endif
static int
rip6_entry_print(register const struct netinfo6 *ni, int metric)
{
int l;
l = printf("%s/%d", ip6addr_string(&ni->rip6_dest), ni->rip6_plen);
if (ni->rip6_tag)
l += printf(" [%d]", EXTRACT_16BITS(&ni->rip6_tag));
if (metric)
l += printf(" (%d)", ni->rip6_metric);
return l;
}
void
ripng_print(const u_char *dat, unsigned int length)
{
register const struct rip6 *rp = (struct rip6 *)dat;
register const struct netinfo6 *ni;
register u_int amt;
register u_int i;
int j;
int trunc;
if (snapend < dat)
return;
amt = snapend - dat;
i = min(length, amt);
if (i < (sizeof(struct rip6) - sizeof(struct netinfo6)))
return;
i -= (sizeof(struct rip6) - sizeof(struct netinfo6));
switch (rp->rip6_cmd) {
case RIP6_REQUEST:
j = length / sizeof(*ni);
if (j == 1
&& rp->rip6_nets->rip6_metric == HOPCNT_INFINITY6
&& IN6_IS_ADDR_UNSPECIFIED(&rp->rip6_nets->rip6_dest)) {
printf(" ripng-req dump");
break;
}
if (j * sizeof(*ni) != length - 4)
printf(" ripng-req %d[%u]:", j, length);
else
printf(" ripng-req %d:", j);
trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i);
for (ni = rp->rip6_nets; i >= sizeof(*ni);
i -= sizeof(*ni), ++ni) {
if (vflag > 1)
printf("\n\t");
else
printf(" ");
rip6_entry_print(ni, 0);
}
break;
case RIP6_RESPONSE:
j = length / sizeof(*ni);
if (j * sizeof(*ni) != length - 4)
printf(" ripng-resp %d[%u]:", j, length);
else
printf(" ripng-resp %d:", j);
trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i);
for (ni = rp->rip6_nets; i >= sizeof(*ni);
i -= sizeof(*ni), ++ni) {
if (vflag > 1)
printf("\n\t");
else
printf(" ");
rip6_entry_print(ni, ni->rip6_metric);
}
if (trunc)
printf("[|ripng]");
break;
default:
printf(" ripng-%d ?? %u", rp->rip6_cmd, length);
break;
}
if (rp->rip6_vers != RIP6_VERSION)
printf(" [vers %d]", rp->rip6_vers);
}
#endif /* INET6 */