2 * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
21 * Format and print trivial file transfer protocol packets.
25 static const char rcsid[] =
26 "@(#) $Header: /tcpdump/master/tcpdump/print-tftp.c,v 1.31 1999/11/21 09:37:03 fenner Exp $ (LBL)";
33 #include <sys/param.h>
36 #include <netinet/in.h>
39 #undef SEGSIZE /* SINIX sucks */
41 #include <arpa/tftp.h>
47 #include "interface.h"
48 #include "addrtoname.h"
50 /* op code to string mapping */
51 static struct tok op2str[] = {
52 { RRQ, "RRQ" }, /* read request */
53 { WRQ, "WRQ" }, /* write request */
54 { DATA, "DATA" }, /* data packet */
55 { ACK, "ACK" }, /* acknowledgement */
56 { ERROR, "ERROR" }, /* error code */
60 /* error code to string mapping */
61 static struct tok err2str[] = {
62 { EUNDEF, "EUNDEF" }, /* not defined */
63 { ENOTFOUND, "ENOTFOUND" }, /* file not found */
64 { EACCESS, "EACCESS" }, /* access violation */
65 { ENOSPACE, "ENOSPACE" }, /* disk full or allocation exceeded */
66 { EBADOP, "EBADOP" }, /* illegal TFTP operation */
67 { EBADID, "EBADID" }, /* unknown transfer ID */
68 { EEXISTS, "EEXISTS" }, /* file already exists */
69 { ENOUSER, "ENOUSER" }, /* no such user */
74 * Print trivial file transfer program requests
77 tftp_print(register const u_char *bp, u_int length)
79 register const struct tftphdr *tp;
80 register const char *cp;
81 register const u_char *p;
82 register int opcode, i;
83 static char tstr[] = " [|tftp]";
85 tp = (const struct tftphdr *)bp;
88 printf(" %d", length);
90 /* Print tftp request type */
91 TCHECK(tp->th_opcode);
92 opcode = ntohs(tp->th_opcode);
93 cp = tok2str(op2str, "tftp-#%d", opcode);
95 /* Bail if bogus opcode */
104 * XXX Not all arpa/tftp.h's specify th_stuff as any
105 * array; use address of th_block instead
108 p = (u_char *)tp->th_stuff;
110 p = (u_char *)&tp->th_block;
112 fputs(" \"", stdout);
113 i = fn_print(p, snapend);
121 TCHECK(tp->th_block);
122 printf(" block %d", ntohs(tp->th_block));
126 /* Print error code string */
128 printf(" %s ", tok2str(err2str, "tftp-err-#%d \"",
129 ntohs(tp->th_code)));
130 /* Print error message string */
131 i = fn_print((const u_char *)tp->th_data, snapend);
138 /* We shouldn't get here */
139 printf("(unknown #%d)", opcode);