mirror of
https://github.com/the-tcpdump-group/tcpdump.git
synced 2024-11-23 01:53:55 +08:00
94a3708f00
Builds using Autotools or CMake generate config.h, thus remove the '#ifdef HAVE_CONFIG_H'/'#endif'. Remove also the 'add_definitions(-DHAVE_CONFIG_H)' in CMakeLists.txt.
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/* $OpenBSD: print-carp.c,v 1.6 2009/10/27 23:59:55 deraadt Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2000 William C. Fenner.
|
|
* All rights reserved.
|
|
*
|
|
* Kevin Steves <ks@hp.se> July 2000
|
|
* Modified to:
|
|
* - print version, type string and packet length
|
|
* - print IP address count if > 1 (-v)
|
|
* - verify checksum (-v)
|
|
* - print authentication string (-v)
|
|
*
|
|
* Copyright (c) 2011 Advanced Computing Technologies
|
|
* George V. Neille-Neil
|
|
*
|
|
* Modified to:
|
|
* - work correctly with CARP
|
|
* - compile into the latest tcpdump
|
|
* - print out the counter
|
|
*
|
|
* 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, and (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.
|
|
* The name of William C. Fenner may not 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.
|
|
*
|
|
*/
|
|
|
|
/* \summary: Common Address Redundancy Protocol (CARP) printer */
|
|
|
|
#include <config.h>
|
|
|
|
#include "netdissect-stdinc.h"
|
|
|
|
#include "netdissect.h" /* for checksum structure and functions */
|
|
#include "extract.h"
|
|
|
|
void
|
|
carp_print(netdissect_options *ndo, const u_char *bp, u_int len, u_int ttl)
|
|
{
|
|
u_int version, type;
|
|
const char *type_s;
|
|
|
|
ndo->ndo_protocol = "carp";
|
|
nd_print_protocol_caps(ndo);
|
|
version = (GET_U_1(bp) & 0xf0) >> 4;
|
|
type = GET_U_1(bp) & 0x0f;
|
|
if (type == 1)
|
|
type_s = "advertise";
|
|
else
|
|
type_s = "unknown";
|
|
ND_PRINT("v%u-%s %u: ", version, type_s, len);
|
|
if (ttl != 255)
|
|
ND_PRINT("[ttl=%u!] ", ttl);
|
|
if (version != 2 || type != 1)
|
|
return;
|
|
ND_PRINT("vhid=%u advbase=%u advskew=%u authlen=%u ",
|
|
GET_U_1(bp + 1), GET_U_1(bp + 5), GET_U_1(bp + 2),
|
|
GET_U_1(bp + 3));
|
|
if (ndo->ndo_vflag) {
|
|
struct cksum_vec vec[1];
|
|
vec[0].ptr = (const uint8_t *)bp;
|
|
vec[0].len = len;
|
|
if (ND_TTEST_LEN(bp, len) && in_cksum(vec, 1))
|
|
ND_PRINT(" (bad carp cksum %x!)",
|
|
GET_BE_U_2(bp + 6));
|
|
}
|
|
ND_PRINT("counter=%" PRIu64, GET_BE_U_8(bp + 8));
|
|
}
|