freebsd-nq/contrib/tcpdump/print-bxxp.c
2001-04-03 07:45:48 +00:00

83 lines
1.5 KiB
C

/*
* 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
*
*/
#ifndef lint
static const char rcsid[] =
"@(#) $Header: /tcpdump/master/tcpdump/print-bxxp.c,v 1.3 2000/10/05 04:10:01 itojun Exp $";
#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 ...
*/
int l_strnstart(const u_char *, u_int, const u_char *, u_int);
int
l_strnstart(register const u_char *tstr1, register u_int tl1,
register const u_char *str2, register u_int l2)
{
if (tl1 > l2)
return 0;
return (strncmp(tstr1, str2, tl1) == 0 ? 1 : 0);
}
void
bxxp_print(register const u_char *bp, register 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)");
}