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tcpdump/print-carp.c

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Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
/* $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.
*
*/
Add a summary comment in all other printers Moreover: Remove some redundant comments Update some summary comments Update the specification URL for ATA over Ethernet (AoE) protocol
2016-08-15 21:27:28 +08:00
/* \summary: Common Address Redundancy Protocol (CARP) printer */
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
#ifdef HAVE_CONFIG_H
Always include <config.h> rather than "config.h". This can prevent bizarre failures if, for example, you've done a configuration in the top-level source directory, leaving behind one config.h file, and then do an out-of-tree build in another directory, with different configuration options. This way, we always pick up the same config.h, in the build directory.
2018-01-22 04:27:08 +08:00
#include <config.h>
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
#endif
Use quoted include netdissect-stdinc.h instead of angle-bracketed one
2018-01-20 22:59:49 +08:00
#include "netdissect-stdinc.h"
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
Printers must include 'netdissect.h', not 'interface.h'
2015-09-06 05:35:58 +08:00
#include "netdissect.h" /* for checksum structure and functions */
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
#include "extract.h"
void
Clean up signed vs. unsigned.
2018-01-12 03:52:30 +08:00
carp_print(netdissect_options *ndo, const u_char *bp, u_int len, u_int ttl)
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
{
Clean up signed vs. unsigned.
2018-01-12 03:52:30 +08:00
u_int version, type;
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
const char *type_s;
Add the ndo_protocol field in the netdissect_options structure Update this field in printer entry functions. It will be used for some printings.
2018-03-14 23:54:17 +08:00
ndo->ndo_protocol = "carp";
Use more the ND_TCHECK_1() macro
2017-12-04 01:18:58 +08:00
ND_TCHECK_1(bp);
Use the new GET_ macros instead of the EXTRACT_ ones The exceptions are currently: Some EXTRACT_ in print-juniper.c, not used on packet buffer pointer. An EXTRACT_BE_U_3 in addrtoname.c, not always used on packet buffer pointer.
2018-06-16 23:23:21 +08:00
version = (GET_U_1(bp) & 0xf0) >> 4;
type = GET_U_1(bp) & 0x0f;
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
if (type == 1)
type_s = "advertise";
else
type_s = "unknown";
Clean up signed vs. unsigned.
2018-01-12 03:52:30 +08:00
ND_PRINT("CARPv%u-%s %u: ", version, type_s, len);
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
if (ttl != 255)
Clean up signed vs. unsigned.
2018-01-12 03:52:30 +08:00
ND_PRINT("[ttl=%u!] ", ttl);
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
if (version != 2 || type != 1)
return;
Use more the ND_TCHECK_1() macro
2017-12-04 01:18:58 +08:00
ND_TCHECK_1(bp + 2);
ND_TCHECK_1(bp + 5);
Clean up signed vs. unsigned.
2018-01-12 03:52:30 +08:00
ND_PRINT("vhid=%u advbase=%u advskew=%u authlen=%u ",
Use the new GET_ macros instead of the EXTRACT_ ones The exceptions are currently: Some EXTRACT_ in print-juniper.c, not used on packet buffer pointer. An EXTRACT_BE_U_3 in addrtoname.c, not always used on packet buffer pointer.
2018-06-16 23:23:21 +08:00
GET_U_1(bp + 1), GET_U_1(bp + 5), GET_U_1(bp + 2),
GET_U_1(bp + 3));
CARP: NDOize
2014-02-25 22:23:45 +08:00
if (ndo->ndo_vflag) {
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
struct cksum_vec vec[1];
u_intN_t is dead, long live uintN_t. And, as we require at least autoconf 2.61, and as autoconf 2.61 and later have AC_TYPE_UINTn_T and AC_TYPE_INTn_T macros, we use them to define the uintN_t and intN_t macros if the system doesn't define them for us. This lets us get rid of bitypes.h as well.
2014-04-23 15:20:40 +08:00
vec[0].ptr = (const uint8_t *)bp;
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
vec[0].len = len;
Replace ND_TTEST2()/ND_TCHECK2() macros by macros using pointers (1/n) ND_TTEST2(var, l) -> ND_TTEST_LEN(p, l) ND_TCHECK2(var, l) -> ND_TCHECK_LEN(p, l)
2017-12-11 19:46:51 +08:00
if (ND_TTEST_LEN(bp, len) && in_cksum(vec, 1))
Update ND_PRINT() as a variadic macro
2018-01-07 18:47:30 +08:00
ND_PRINT(" (bad carp cksum %x!)",
Use the new GET_ macros instead of the EXTRACT_ ones The exceptions are currently: Some EXTRACT_ in print-juniper.c, not used on packet buffer pointer. An EXTRACT_BE_U_3 in addrtoname.c, not always used on packet buffer pointer.
2018-06-16 23:23:21 +08:00
GET_BE_U_2(bp + 6));
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
}
Use the new GET_ macros instead of the EXTRACT_ ones The exceptions are currently: Some EXTRACT_ in print-juniper.c, not used on packet buffer pointer. An EXTRACT_BE_U_3 in addrtoname.c, not always used on packet buffer pointer.
2018-06-16 23:23:21 +08:00
ND_PRINT("counter=%" PRIu64, GET_BE_U_8(bp + 8));
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
return;
trunc:
Add more nd_print_trunc() calls Update the output of some tests accordingly. Moreover: Add a ndo_protocol field assignment.
2018-05-11 00:05:56 +08:00
nd_print_trunc(ndo);
Add a CARP dissector and a command-line option to dissect proto 112 as CARP. CARP and VRRP both use IP protocol number 112, so there needs to be a -T flag to specify that protocol 112 be dissected as CARP rather than VRRP. Also update the man page.
2011-11-24 03:53:13 +08:00
}
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