| /* |
| * 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-beep.c |
| * |
| */ |
| |
| #define NETDISSECT_REWORKED |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <tcpdump-stdinc.h> |
| |
| #include <string.h> |
| |
| #include "interface.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)")); |
| } |