1 files changed, 139 insertions, 0 deletions
diff --git a/contrib/tcpdump/print-tftp.c b/contrib/tcpdump/print-tftp.c
new file mode 100644
index 0000000000000..97b2f0e1aac18
--- /dev/null
+++ b/contrib/tcpdump/print-tftp.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Format and print trivial file transfer protocol packets.
+ */
+
+#ifndef lint
+static char rcsid[] =
+    "@(#) $Header: print-tftp.c,v 1.27 96/07/23 14:17:28 leres Exp $ (LBL)";
+#endif
+
+#include <sys/param.h>
+#include <sys/time.h>
+
+#include <netinet/in.h>
+
+#include <arpa/tftp.h>
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+
+/* op code to string mapping */
+static struct tok op2str[] = {
+	{ RRQ,		"RRQ" },	/* read request */
+	{ WRQ,		"WRQ" },	/* write request */
+	{ DATA,		"DATA" },	/* data packet */
+	{ ACK,		"ACK" },	/* acknowledgement */
+	{ ERROR,	"ERROR" },	/* error code */
+	{ 0,		NULL }
+};
+
+/* error code to string mapping */
+static struct tok err2str[] = {
+	{ EUNDEF,	"EUNDEF" },	/* not defined */
+	{ ENOTFOUND,	"ENOTFOUND" },	/* file not found */
+	{ EACCESS,	"EACCESS" },	/* access violation */
+	{ ENOSPACE,	"ENOSPACE" },	/* disk full or allocation exceeded */
+	{ EBADOP,	"EBADOP" },	/* illegal TFTP operation */
+	{ EBADID,	"EBADID" },	/* unknown transfer ID */
+	{ EEXISTS,	"EEXISTS" },	/* file already exists */
+	{ ENOUSER,	"ENOUSER" },	/* no such user */
+	{ 0,		NULL }
+};
+
+/*
+ * Print trivial file transfer program requests
+ */
+void
+tftp_print(register const u_char *bp, u_int length)
+{
+	register const struct tftphdr *tp;
+	register const char *cp;
+	register const u_char *p;
+	register int opcode, i;
+	static char tstr[] = " [|tftp]";
+
+	tp = (const struct tftphdr *)bp;
+
+	/* Print length */
+	printf(" %d", length);
+
+	/* Print tftp request type */
+	TCHECK(tp->th_opcode);
+	opcode = ntohs(tp->th_opcode);
+	cp = tok2str(op2str, "tftp-#%d", opcode);
+	printf(" %s", cp);
+	/* Bail if bogus opcode */
+	if (*cp == 't')
+		return;
+
+	switch (opcode) {
+
+	case RRQ:
+	case WRQ:
+		/*
+		 * XXX Not all arpa/tftp.h's specify th_stuff as any
+		 * array; use address of th_block instead
+		 */
+#ifdef notdef
+		p = (u_char *)tp->th_stuff;
+#else
+		p = (u_char *)&tp->th_block;
+#endif
+		fputs(" \"", stdout);
+		i = fn_print(p, snapend);
+		putchar('"');
+		if (i)
+			goto trunc;
+		break;
+
+	case ACK:
+	case DATA:
+		TCHECK(tp->th_block);
+		printf(" block %d", ntohs(tp->th_block));
+		break;
+
+	case ERROR:
+		/* Print error code string */
+		TCHECK(tp->th_code);
+		printf(" %s ", tok2str(err2str, "tftp-err-#%d \"",
+				       ntohs(tp->th_code)));
+		/* Print error message string */
+		i = fn_print((const u_char *)tp->th_data, snapend);
+		putchar('"');
+		if (i)
+			goto trunc;
+		break;
+
+	default:
+		/* We shouldn't get here */
+		printf("(unknown #%d)", opcode);
+		break;
+	}
+	return;
+trunc:
+	fputs(tstr, stdout);
+	return;
+}