mirror of
https://github.com/the-tcpdump-group/tcpdump.git
synced 2024-11-28 12:33:47 +08:00
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
|
|
* Copyright (C) 2000, Richard Sharpe
|
|
*
|
|
* This software may be distributed either under the terms of the
|
|
* BSD-style license that accompanies tcpdump or under the GNU GPL
|
|
* version 2 or later.
|
|
*
|
|
* print-beep.c
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <netdissect-stdinc.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include "netdissect.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 char *tstr1, u_int tl1, const char *str2, u_int l2)
|
|
{
|
|
|
|
if (tl1 > l2)
|
|
return 0;
|
|
|
|
return (strncmp(tstr1, str2, tl1) == 0 ? 1 : 0);
|
|
}
|
|
|
|
void
|
|
beep_print(netdissect_options *ndo, const u_char *bp, u_int length)
|
|
{
|
|
|
|
if (l_strnstart("MSG", 4, (const char *)bp, length)) /* A REQuest */
|
|
ND_PRINT((ndo, " BEEP MSG"));
|
|
else if (l_strnstart("RPY ", 4, (const char *)bp, length))
|
|
ND_PRINT((ndo, " BEEP RPY"));
|
|
else if (l_strnstart("ERR ", 4, (const char *)bp, length))
|
|
ND_PRINT((ndo, " BEEP ERR"));
|
|
else if (l_strnstart("ANS ", 4, (const char *)bp, length))
|
|
ND_PRINT((ndo, " BEEP ANS"));
|
|
else if (l_strnstart("NUL ", 4, (const char *)bp, length))
|
|
ND_PRINT((ndo, " BEEP NUL"));
|
|
else if (l_strnstart("SEQ ", 4, (const char *)bp, length))
|
|
ND_PRINT((ndo, " BEEP SEQ"));
|
|
else if (l_strnstart("END", 4, (const char *)bp, length))
|
|
ND_PRINT((ndo, " BEEP END"));
|
|
else
|
|
ND_PRINT((ndo, " BEEP (payload or undecoded)"));
|
|
}
|