| /* |
| * 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 */ |