2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 static char sccsid[] = "@(#)tftp.c 8.1 (Berkeley) 6/6/93";
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 /* Many bug fixes are from Jim Guyton <guyton@rand-unix> */
44 * TFTP User Program -- Protocol Machines
46 #include <sys/socket.h>
49 #include <netinet/in.h>
51 #include <arpa/tftp.h>
61 #include "tftp-file.h"
62 #include "tftp-utils.h"
64 #include "tftp-transfer.h"
65 #include "tftp-options.h"
68 * Send the requested file.
71 xmitfile(int peer, char *port, int fd, char *name, char *mode)
76 struct sockaddr_storage serv; /* valid server port number */
77 char recvbuffer[MAXPKTSIZE];
78 struct tftp_stats tftp_stats;
80 stats_init(&tftp_stats);
82 memset(&serv, 0, sizeof(serv));
83 rp = (struct tftphdr *)recvbuffer;
87 se = getservbyname("tftp", "udp");
88 ((struct sockaddr_in *)&peer_sock)->sin_port = se->s_port;
90 ((struct sockaddr_in *)&peer_sock)->sin_port =
93 for (i = 0; i < 12; i++) {
94 struct sockaddr_storage from;
96 /* Tell the other side what we want to do */
97 if (debug&DEBUG_SIMPLE)
98 printf("Sending %s\n", name);
100 n = send_wrq(peer, name, mode);
102 printf("Cannot send WRQ packet\n");
107 * The first packet we receive has the new destination port
108 * we have to send the next packets to.
110 n = receive_packet(peer, recvbuffer,
111 MAXPKTSIZE, &from, timeoutpacket);
113 /* We got some data! */
115 ((struct sockaddr_in *)&peer_sock)->sin_port =
116 ((struct sockaddr_in *)&from)->sin_port;
120 /* This should be retried */
121 if (n == RP_TIMEOUT) {
122 printf("Try %d, didn't receive answer from remote.\n",
127 /* Everything else is fatal */
131 printf("Transfer timed out.\n");
134 if (rp->th_opcode == ERROR) {
135 printf("Got ERROR, aborted\n");
140 * If the first packet is an OACK instead of an ACK packet,
141 * handle it different.
143 if (rp->th_opcode == OACK) {
144 if (!options_rfc_enabled) {
145 printf("Got OACK while options are not enabled!\n");
146 send_error(peer, EBADOP);
150 parse_options(peer, rp->th_stuff, n + 2);
153 if (read_init(fd, NULL, mode) < 0) {
159 tftp_send(peer, &block, &tftp_stats);
162 if (tftp_stats.amount > 0)
163 printstats("Sent", verbose, &tftp_stats);
172 recvfile(int peer, char *port, int fd, char *name, char *mode)
176 char recvbuffer[MAXPKTSIZE];
178 struct tftp_stats tftp_stats;
180 stats_init(&tftp_stats);
182 rp = (struct tftphdr *)recvbuffer;
186 se = getservbyname("tftp", "udp");
187 ((struct sockaddr_in *)&peer_sock)->sin_port = se->s_port;
189 ((struct sockaddr_in *)&peer_sock)->sin_port =
192 for (i = 0; i < 12; i++) {
193 struct sockaddr_storage from;
195 /* Tell the other side what we want to do */
196 if (debug&DEBUG_SIMPLE)
197 printf("Requesting %s\n", name);
199 n = send_rrq(peer, name, mode);
201 printf("Cannot send RRQ packet\n");
206 * The first packet we receive has the new destination port
207 * we have to send the next packets to.
209 n = receive_packet(peer, recvbuffer,
210 MAXPKTSIZE, &from, timeoutpacket);
212 /* We got something useful! */
214 ((struct sockaddr_in *)&peer_sock)->sin_port =
215 ((struct sockaddr_in *)&from)->sin_port;
219 /* We should retry if this happens */
220 if (n == RP_TIMEOUT) {
221 printf("Try %d, didn't receive answer from remote.\n",
226 /* Otherwise it is a fatal error */
230 printf("Transfer timed out.\n");
233 if (rp->th_opcode == ERROR) {
234 tftp_log(LOG_ERR, "Error code %d: %s", rp->th_code, rp->th_msg);
238 if (write_init(fd, NULL, mode) < 0) {
244 * If the first packet is an OACK packet instead of an DATA packet,
245 * handle it different.
247 if (rp->th_opcode == OACK) {
248 if (!options_rfc_enabled) {
249 printf("Got OACK while options are not enabled!\n");
250 send_error(peer, EBADOP);
254 parse_options(peer, rp->th_stuff, n + 2);
256 n = send_ack(peer, 0);
258 printf("Cannot send ACK on OACK.\n");
262 tftp_receive(peer, &block, &tftp_stats, NULL, 0);
265 tftp_receive(peer, &block, &tftp_stats, rp, n);
268 if (tftp_stats.amount > 0)
269 printstats("Received", verbose, &tftp_stats);