auto import from //depot/cupcake/@135843
diff --git a/print-tftp.c b/print-tftp.c
new file mode 100644
index 0000000..b517898
--- /dev/null
+++ b/print-tftp.c
@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997
+ * 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 const char rcsid[] _U_ =
+ "@(#) $Header: /tcpdump/master/tcpdump/print-tftp.c,v 1.37.2.1 2007/09/14 01:03:12 guy Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#ifdef SEGSIZE
+#undef SEGSIZE /* SINIX sucks */
+#endif
+
+#include <stdio.h>
+#include <string.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "extract.h"
+#include "tftp.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 */
+ { OACK, "OACK" }, /* option acknowledgement */
+ { 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 = EXTRACT_16BITS(&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:
+ case OACK:
+ /*
+ * 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
+ putchar(' ');
+ /* Print filename or first option */
+ if (opcode != OACK)
+ putchar('"');
+ i = fn_print(p, snapend);
+ if (opcode != OACK)
+ putchar('"');
+
+ /* Print the mode (RRQ and WRQ only) and any options */
+ while ((p = (const u_char *)strchr((const char *)p, '\0')) != NULL) {
+ if (length <= (u_int)(p - (const u_char *)&tp->th_block))
+ break;
+ p++;
+ if (*p != '\0') {
+ putchar(' ');
+ fn_print(p, snapend);
+ }
+ }
+
+ if (i)
+ goto trunc;
+ break;
+
+ case ACK:
+ case DATA:
+ TCHECK(tp->th_block);
+ printf(" block %d", EXTRACT_16BITS(&tp->th_block));
+ break;
+
+ case ERROR:
+ /* Print error code string */
+ TCHECK(tp->th_code);
+ printf(" %s \"", tok2str(err2str, "tftp-err-#%d \"",
+ EXTRACT_16BITS(&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;
+}