NetBSD/dist/tcpdump/print-bxxp.c

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2001-06-25 23:59:56 +04:00
/* $NetBSD: print-bxxp.c,v 1.2 2001/06/25 19:59:57 itojun Exp $ */
/*
* Copyright (C) 2000, Richard Sharpe
*
* This software may be distributed either under the terms of the
* BSD-style licence that accompanies tcpdump or under the GNU GPL
* version 2 or later.
*
* print-bxxp.c
*
*/
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#include <sys/cdefs.h>
#ifndef lint
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#if 0
static const char rcsid[] =
"@(#) Header: /tcpdump/master/tcpdump/print-bxxp.c,v 1.4 2001/06/15 07:45:42 itojun Exp";
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#else
__RCSID("$NetBSD: print-bxxp.c,v 1.2 2001/06/25 19:59:57 itojun Exp $");
#endif
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/param.h>
#include <sys/time.h>
#ifdef HAVE_MEMORY_H
#include <memory.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "interface.h"
#include "extract.h"
/* Check for a string but not go beyond length
* Return TRUE on match, FALSE otherwise
*
* Looks at the first few chars up to tl1 ...
*/
static int l_strnstart(const u_char *, u_int, const u_char *, u_int);
static int
l_strnstart(const u_char *tstr1, u_int tl1, const u_char *str2, u_int l2)
{
if (tl1 > l2)
return 0;
return (strncmp(tstr1, str2, tl1) == 0 ? 1 : 0);
}
void
bxxp_print(const u_char *bp, u_int length)
{
if (l_strnstart("REQ ", 4, bp, length)) /* A REQuest */
printf(" BXXP REQ");
else if (l_strnstart("RSP ", 4, bp, length))
printf(" BXXP RSP");
else if (l_strnstart("SEQ ", 4, bp, length))
printf(" BXXP SEQ");
else if (l_strnstart("END", 4, bp, length))
printf(" BXXP END");
else
printf(" BXXP (payload or undecoded)");
}