mirror of
https://github.com/the-tcpdump-group/tcpdump.git
synced 2024-11-27 12:03:44 +08:00
100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
/*
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* Copyright (c) 2000 William C. Fenner.
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* 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
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* distributions retain the above copyright notice and this paragraph
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* in its entirety, and (2) distributions including binary code include
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* the above copyright notice and this paragraph in its entirety in
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* the documentation or other materials provided with the distribution.
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* The name of William C. Fenner may not be used to endorse or
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* promote products derived from this software without specific prior
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* written permission. THIS SOFTWARE IS PROVIDED ``AS IS'' AND
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* WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
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* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"@(#) $Header: /tcpdump/master/tcpdump/print-vrrp.c,v 1.1 2000-05-01 17:35:44 fenner 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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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "interface.h"
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#include "extract.h"
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#include "addrtoname.h"
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/*
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* RFC 2338:
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* 0 1 2 3
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |Version| Type | Virtual Rtr ID| Priority | Count IP Addrs|
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Auth Type | Adver Int | Checksum |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | IP Address (1) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | . |
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* | . |
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* | . |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | IP Address (n) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Authentication Data (1) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Authentication Data (2) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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void
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vrrp_print(register const u_char *bp, register u_int len, int ttl)
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{
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printf("vrrp ");
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if (ttl != 255)
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printf("[ttl=%d!] ", ttl);
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TCHECK(bp[3]);
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if ((bp[0] & 0xf0) != 0x20) {
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printf("[v=%d]", bp[0] >> 4);
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return;
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}
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if ((bp[0] & 0x0f) != 1) {
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printf("[t=%d]", bp[0] & 0x0f);
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return;
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}
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printf("vrid=%d prio=%d", bp[1], bp[2]);
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TCHECK(bp[5]);
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if (bp[4] != 0) {
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printf(" [authtype %d]", bp[4]);
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}
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printf(" intvl=%d", bp[5]);
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if (vflag) {
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int naddrs = bp[3];
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int i;
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char c;
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/* check checksum? */
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printf(" addrs:");
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c = ' ';
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bp += 8;
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for (i = 0; i < naddrs; i++) {
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TCHECK(bp[3]);
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printf("%c%s", c, ipaddr_string(bp));
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c = ',';
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bp += 4;
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}
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/* auth data? */
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}
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return;
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trunc:
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printf("[|vrrp]");
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}
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