72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
/*
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* Copyright (C) 2000, Richard Sharpe
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*
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* This software may be distributed either under the terms of the
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* BSD-style licence that accompanies tcpdump or under the GNU GPL
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* version 2 or later.
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*
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* print-beep.c
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*
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*/
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#ifndef lint
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static const char rcsid[] _U_ =
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"@(#) $Header: /tcpdump/master/tcpdump/print-beep.c,v 1.4.2.2 2003/11/16 08:51:12 guy Exp $";
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <tcpdump-stdinc.h>
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#ifdef HAVE_MEMORY_H
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#include <memory.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "interface.h"
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#include "extract.h"
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/* Check for a string but not go beyond length
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* Return TRUE on match, FALSE otherwise
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*
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* Looks at the first few chars up to tl1 ...
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*/
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static int l_strnstart(const char *, u_int, const char *, u_int);
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static int
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l_strnstart(const char *tstr1, u_int tl1, const char *str2, u_int l2)
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{
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if (tl1 > l2)
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return 0;
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return (strncmp(tstr1, str2, tl1) == 0 ? 1 : 0);
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}
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void
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beep_print(const u_char *bp, u_int length)
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{
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if (l_strnstart("MSG", 4, (const char *)bp, length)) /* A REQuest */
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printf(" BEEP MSG");
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else if (l_strnstart("RPY ", 4, (const char *)bp, length))
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printf(" BEEP RPY");
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else if (l_strnstart("ERR ", 4, (const char *)bp, length))
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printf(" BEEP ERR");
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else if (l_strnstart("ANS ", 4, (const char *)bp, length))
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printf(" BEEP ANS");
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else if (l_strnstart("NUL ", 4, (const char *)bp, length))
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printf(" BEEP NUL");
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else if (l_strnstart("SEQ ", 4, (const char *)bp, length))
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printf(" BEEP SEQ");
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else if (l_strnstart("END", 4, (const char *)bp, length))
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printf(" BEEP END");
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else
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printf(" BEEP (payload or undecoded)");
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}
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