create project

print-beep.c

@@ -0,0 +1,58 @@
+/*
+ * 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)"));
+}