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-rw-r--r--print-beep.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/print-beep.c b/print-beep.c
new file mode 100644
index 0000000..76017ea
--- /dev/null
+++ b/print-beep.c
@@ -0,0 +1,69 @@
+/*
+ * 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
+ *
+ */
+
+/* \summary: Blocks Extensible Exchange Protocol (BEEP) printer */
+
+#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(netdissect_options *ndo, const char *tstr1, u_int tl1,
+ const char *str2, u_int l2)
+{
+ if (!ND_TTEST_LEN(str2, tl1)) {
+ /*
+ * We don't have tl1 bytes worth of captured data
+ * for the string, so we can't check for this
+ * string.
+ */
+ return 0;
+ }
+ 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)
+{
+
+ ndo->ndo_protocol = "beep";
+ if (l_strnstart(ndo, "MSG", 4, (const char *)bp, length)) /* A REQuest */
+ ND_PRINT(" BEEP MSG");
+ else if (l_strnstart(ndo, "RPY ", 4, (const char *)bp, length))
+ ND_PRINT(" BEEP RPY");
+ else if (l_strnstart(ndo, "ERR ", 4, (const char *)bp, length))
+ ND_PRINT(" BEEP ERR");
+ else if (l_strnstart(ndo, "ANS ", 4, (const char *)bp, length))
+ ND_PRINT(" BEEP ANS");
+ else if (l_strnstart(ndo, "NUL ", 4, (const char *)bp, length))
+ ND_PRINT(" BEEP NUL");
+ else if (l_strnstart(ndo, "SEQ ", 4, (const char *)bp, length))
+ ND_PRINT(" BEEP SEQ");
+ else if (l_strnstart(ndo, "END", 4, (const char *)bp, length))
+ ND_PRINT(" BEEP END");
+ else
+ ND_PRINT(" BEEP (payload or undecoded)");
+}