Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

129 lines (117 sloc) 3.744 kb
/*
* 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 */
Jump to Line
Something went wrong with that request. Please try again.