mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-29 12:03:03 +00:00
da52b4caaf
is in accordance with the information provided at ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change Also add $FreeBSD$ to a few files to keep svn happy. Discussed with: imp, rwatson
271 lines
6.4 KiB
C
271 lines
6.4 KiB
C
/*
|
|
* Copyright (c) 1983, 1993
|
|
* 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 the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#if 0
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)tftp.c 8.1 (Berkeley) 6/6/93";
|
|
#endif /* not lint */
|
|
#endif
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/* Many bug fixes are from Jim Guyton <guyton@rand-unix> */
|
|
|
|
/*
|
|
* TFTP User Program -- Protocol Machines
|
|
*/
|
|
#include <sys/socket.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <netinet/in.h>
|
|
|
|
#include <arpa/tftp.h>
|
|
|
|
#include <err.h>
|
|
#include <netdb.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <syslog.h>
|
|
|
|
#include "tftp.h"
|
|
#include "tftp-file.h"
|
|
#include "tftp-utils.h"
|
|
#include "tftp-io.h"
|
|
#include "tftp-transfer.h"
|
|
#include "tftp-options.h"
|
|
|
|
/*
|
|
* Send the requested file.
|
|
*/
|
|
void
|
|
xmitfile(int peer, char *port, int fd, char *name, char *mode)
|
|
{
|
|
struct tftphdr *rp;
|
|
int n, i;
|
|
uint16_t block;
|
|
struct sockaddr_storage serv; /* valid server port number */
|
|
char recvbuffer[MAXPKTSIZE];
|
|
struct tftp_stats tftp_stats;
|
|
|
|
stats_init(&tftp_stats);
|
|
|
|
memset(&serv, 0, sizeof(serv));
|
|
rp = (struct tftphdr *)recvbuffer;
|
|
|
|
if (port == NULL) {
|
|
struct servent *se;
|
|
se = getservbyname("tftp", "udp");
|
|
((struct sockaddr_in *)&peer_sock)->sin_port = se->s_port;
|
|
} else
|
|
((struct sockaddr_in *)&peer_sock)->sin_port =
|
|
htons(atoi(port));
|
|
|
|
for (i = 0; i < 12; i++) {
|
|
struct sockaddr_storage from;
|
|
|
|
/* Tell the other side what we want to do */
|
|
if (debug&DEBUG_SIMPLE)
|
|
printf("Sending %s\n", name);
|
|
|
|
n = send_wrq(peer, name, mode);
|
|
if (n > 0) {
|
|
printf("Cannot send WRQ packet\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* The first packet we receive has the new destination port
|
|
* we have to send the next packets to.
|
|
*/
|
|
n = receive_packet(peer, recvbuffer,
|
|
MAXPKTSIZE, &from, timeoutpacket);
|
|
|
|
/* We got some data! */
|
|
if (n >= 0) {
|
|
((struct sockaddr_in *)&peer_sock)->sin_port =
|
|
((struct sockaddr_in *)&from)->sin_port;
|
|
break;
|
|
}
|
|
|
|
/* This should be retried */
|
|
if (n == RP_TIMEOUT) {
|
|
printf("Try %d, didn't receive answer from remote.\n",
|
|
i + 1);
|
|
continue;
|
|
}
|
|
|
|
/* Everything else is fatal */
|
|
break;
|
|
}
|
|
if (i == 12) {
|
|
printf("Transfer timed out.\n");
|
|
return;
|
|
}
|
|
if (rp->th_opcode == ERROR) {
|
|
printf("Got ERROR, aborted\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* If the first packet is an OACK instead of an ACK packet,
|
|
* handle it different.
|
|
*/
|
|
if (rp->th_opcode == OACK) {
|
|
if (!options_rfc_enabled) {
|
|
printf("Got OACK while options are not enabled!\n");
|
|
send_error(peer, EBADOP);
|
|
return;
|
|
}
|
|
|
|
parse_options(peer, rp->th_stuff, n + 2);
|
|
}
|
|
|
|
if (read_init(fd, NULL, mode) < 0) {
|
|
warn("read_init()");
|
|
return;
|
|
}
|
|
|
|
block = 1;
|
|
tftp_send(peer, &block, &tftp_stats);
|
|
|
|
read_close();
|
|
if (tftp_stats.amount > 0)
|
|
printstats("Sent", verbose, &tftp_stats);
|
|
|
|
txrx_error = 1;
|
|
}
|
|
|
|
/*
|
|
* Receive a file.
|
|
*/
|
|
void
|
|
recvfile(int peer, char *port, int fd, char *name, char *mode)
|
|
{
|
|
struct tftphdr *rp;
|
|
uint16_t block;
|
|
char recvbuffer[MAXPKTSIZE];
|
|
int n, i;
|
|
struct tftp_stats tftp_stats;
|
|
|
|
stats_init(&tftp_stats);
|
|
|
|
rp = (struct tftphdr *)recvbuffer;
|
|
|
|
if (port == NULL) {
|
|
struct servent *se;
|
|
se = getservbyname("tftp", "udp");
|
|
((struct sockaddr_in *)&peer_sock)->sin_port = se->s_port;
|
|
} else
|
|
((struct sockaddr_in *)&peer_sock)->sin_port =
|
|
htons(atoi(port));
|
|
|
|
for (i = 0; i < 12; i++) {
|
|
struct sockaddr_storage from;
|
|
|
|
/* Tell the other side what we want to do */
|
|
if (debug&DEBUG_SIMPLE)
|
|
printf("Requesting %s\n", name);
|
|
|
|
n = send_rrq(peer, name, mode);
|
|
if (n > 0) {
|
|
printf("Cannot send RRQ packet\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* The first packet we receive has the new destination port
|
|
* we have to send the next packets to.
|
|
*/
|
|
n = receive_packet(peer, recvbuffer,
|
|
MAXPKTSIZE, &from, timeoutpacket);
|
|
|
|
/* We got something useful! */
|
|
if (n >= 0) {
|
|
((struct sockaddr_in *)&peer_sock)->sin_port =
|
|
((struct sockaddr_in *)&from)->sin_port;
|
|
break;
|
|
}
|
|
|
|
/* We should retry if this happens */
|
|
if (n == RP_TIMEOUT) {
|
|
printf("Try %d, didn't receive answer from remote.\n",
|
|
i + 1);
|
|
continue;
|
|
}
|
|
|
|
/* Otherwise it is a fatal error */
|
|
break;
|
|
}
|
|
if (i == 12) {
|
|
printf("Transfer timed out.\n");
|
|
return;
|
|
}
|
|
if (rp->th_opcode == ERROR) {
|
|
tftp_log(LOG_ERR, "Error code %d: %s", rp->th_code, rp->th_msg);
|
|
return;
|
|
}
|
|
|
|
if (write_init(fd, NULL, mode) < 0) {
|
|
warn("write_init");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* If the first packet is an OACK packet instead of an DATA packet,
|
|
* handle it different.
|
|
*/
|
|
if (rp->th_opcode == OACK) {
|
|
if (!options_rfc_enabled) {
|
|
printf("Got OACK while options are not enabled!\n");
|
|
send_error(peer, EBADOP);
|
|
return;
|
|
}
|
|
|
|
parse_options(peer, rp->th_stuff, n + 2);
|
|
|
|
n = send_ack(peer, 0);
|
|
if (n > 0) {
|
|
printf("Cannot send ACK on OACK.\n");
|
|
return;
|
|
}
|
|
block = 0;
|
|
tftp_receive(peer, &block, &tftp_stats, NULL, 0);
|
|
} else {
|
|
block = 1;
|
|
tftp_receive(peer, &block, &tftp_stats, rp, n);
|
|
}
|
|
|
|
write_close();
|
|
if (tftp_stats.amount > 0)
|
|
printstats("Received", verbose, &tftp_stats);
|
|
return;
|
|
}
|