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129 lines
3.7 KiB
C
129 lines
3.7 KiB
C
/*
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* Copyright (c) 1989, 1990, 1991, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef lint
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static const char rcsid[] _U_ =
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"@(#) $Header: /tcpdump/master/tcpdump/print-ripng.c,v 1.18 2005-01-04 00:15:54 guy Exp $";
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef INET6
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#include <tcpdump-stdinc.h>
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#include <stdio.h>
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#include "route6d.h"
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#include "interface.h"
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#include "addrtoname.h"
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#include "extract.h"
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#if !defined(IN6_IS_ADDR_UNSPECIFIED) && !defined(_MSC_VER) /* MSVC inline */
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static int IN6_IS_ADDR_UNSPECIFIED(const struct in6_addr *addr)
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{
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static const struct in6_addr in6addr_any; /* :: */
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return (memcmp(addr, &in6addr_any, sizeof(*addr)) == 0);
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}
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#endif
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static int
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rip6_entry_print(register const struct netinfo6 *ni, int metric)
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{
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int l;
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l = printf("%s/%d", ip6addr_string(&ni->rip6_dest), ni->rip6_plen);
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if (ni->rip6_tag)
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l += printf(" [%d]", EXTRACT_16BITS(&ni->rip6_tag));
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if (metric)
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l += printf(" (%d)", ni->rip6_metric);
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return l;
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}
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void
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ripng_print(const u_char *dat, unsigned int length)
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{
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register const struct rip6 *rp = (struct rip6 *)dat;
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register const struct netinfo6 *ni;
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register u_int amt;
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register u_int i;
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int j;
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int trunc;
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if (snapend < dat)
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return;
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amt = snapend - dat;
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i = min(length, amt);
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if (i < (sizeof(struct rip6) - sizeof(struct netinfo6)))
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return;
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i -= (sizeof(struct rip6) - sizeof(struct netinfo6));
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switch (rp->rip6_cmd) {
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case RIP6_REQUEST:
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j = length / sizeof(*ni);
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if (j == 1
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&& rp->rip6_nets->rip6_metric == HOPCNT_INFINITY6
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&& IN6_IS_ADDR_UNSPECIFIED(&rp->rip6_nets->rip6_dest)) {
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printf(" ripng-req dump");
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break;
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}
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if (j * sizeof(*ni) != length - 4)
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printf(" ripng-req %d[%u]:", j, length);
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else
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printf(" ripng-req %d:", j);
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trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i);
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for (ni = rp->rip6_nets; i >= sizeof(*ni);
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i -= sizeof(*ni), ++ni) {
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if (vflag > 1)
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printf("\n\t");
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else
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printf(" ");
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rip6_entry_print(ni, 0);
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}
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break;
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case RIP6_RESPONSE:
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j = length / sizeof(*ni);
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if (j * sizeof(*ni) != length - 4)
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printf(" ripng-resp %d[%u]:", j, length);
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else
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printf(" ripng-resp %d:", j);
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trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i);
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for (ni = rp->rip6_nets; i >= sizeof(*ni);
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i -= sizeof(*ni), ++ni) {
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if (vflag > 1)
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printf("\n\t");
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else
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printf(" ");
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rip6_entry_print(ni, ni->rip6_metric);
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}
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if (trunc)
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printf("[|ripng]");
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break;
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default:
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printf(" ripng-%d ?? %u", rp->rip6_cmd, length);
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break;
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}
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if (rp->rip6_vers != RIP6_VERSION)
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printf(" [vers %d]", rp->rip6_vers);
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}
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#endif /* INET6 */
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