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Damien Miller33804262001-02-04 23:20:18 +11001/*
2 * Copyright (c) 2001 Damien Miller. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include "includes.h"
26
Ben Lindstrom2b7a0e92001-09-20 00:57:55 +000027RCSID("$OpenBSD: sftp.c,v 1.21 2001/09/19 19:24:19 stevesk Exp $");
Damien Miller33804262001-02-04 23:20:18 +110028
29/* XXX: commandline mode */
Damien Miller33804262001-02-04 23:20:18 +110030/* XXX: short-form remote directory listings (like 'ls -C') */
31
32#include "buffer.h"
33#include "xmalloc.h"
34#include "log.h"
35#include "pathnames.h"
Ben Lindstrom4529b702001-05-03 23:39:53 +000036#include "misc.h"
Damien Miller33804262001-02-04 23:20:18 +110037
38#include "sftp.h"
39#include "sftp-common.h"
40#include "sftp-client.h"
41#include "sftp-int.h"
42
Kevin Steves12888d12001-03-05 19:50:57 +000043#ifdef HAVE___PROGNAME
44extern char *__progname;
45#else
46char *__progname;
47#endif
48
Damien Millerd7686fd2001-02-10 00:40:03 +110049char *ssh_program = _PATH_SSH_PROGRAM;
Ben Lindstrom562c26b2001-03-07 01:26:48 +000050FILE* infile;
Damien Millerd7686fd2001-02-10 00:40:03 +110051
Ben Lindstrombba81212001-06-25 05:01:22 +000052static void
Damien Miller33804262001-02-04 23:20:18 +110053connect_to_server(char **args, int *in, int *out, pid_t *sshpid)
54{
55 int c_in, c_out;
56#ifdef USE_PIPES
57 int pin[2], pout[2];
58 if ((pipe(pin) == -1) || (pipe(pout) == -1))
59 fatal("pipe: %s", strerror(errno));
60 *in = pin[0];
61 *out = pout[1];
62 c_in = pout[0];
63 c_out = pin[1];
64#else /* USE_PIPES */
65 int inout[2];
66 if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1)
67 fatal("socketpair: %s", strerror(errno));
68 *in = *out = inout[0];
69 c_in = c_out = inout[1];
70#endif /* USE_PIPES */
71
72 if ((*sshpid = fork()) == -1)
73 fatal("fork: %s", strerror(errno));
74 else if (*sshpid == 0) {
75 if ((dup2(c_in, STDIN_FILENO) == -1) ||
76 (dup2(c_out, STDOUT_FILENO) == -1)) {
77 fprintf(stderr, "dup2: %s\n", strerror(errno));
78 exit(1);
79 }
80 close(*in);
81 close(*out);
82 close(c_in);
83 close(c_out);
Damien Millerd7686fd2001-02-10 00:40:03 +110084 execv(ssh_program, args);
85 fprintf(stderr, "exec: %s: %s\n", ssh_program, strerror(errno));
Damien Miller33804262001-02-04 23:20:18 +110086 exit(1);
87 }
88
89 close(c_in);
90 close(c_out);
91}
92
Ben Lindstrombba81212001-06-25 05:01:22 +000093static void
Damien Miller33804262001-02-04 23:20:18 +110094usage(void)
95{
Ben Lindstrom1e243242001-09-18 05:38:44 +000096 fprintf(stderr,
Ben Lindstrom6a337632001-09-18 05:47:32 +000097 "usage: sftp [-1Cv] [-b batchfile] [-F config] [-o option] [-s subsystem|path]\n"
98 " [-S program] [user@]host[:file [file]]\n");
Damien Miller33804262001-02-04 23:20:18 +110099 exit(1);
100}
101
Kevin Stevesef4eea92001-02-05 12:42:17 +0000102int
Damien Miller33804262001-02-04 23:20:18 +1100103main(int argc, char **argv)
104{
Ben Lindstrom387c4722001-05-08 20:27:25 +0000105 int in, out, ch;
Damien Miller33804262001-02-04 23:20:18 +1100106 pid_t sshpid;
Ben Lindstrom63667f62001-04-13 00:00:14 +0000107 char *host, *userhost, *cp, *file2;
Ben Lindstrom387c4722001-05-08 20:27:25 +0000108 int debug_level = 0, sshver = 2;
109 char *file1 = NULL, *sftp_server = NULL;
110 LogLevel ll = SYSLOG_LEVEL_INFO;
111 arglist args;
Damien Millerd7686fd2001-02-10 00:40:03 +1100112 extern int optind;
113 extern char *optarg;
Damien Miller33804262001-02-04 23:20:18 +1100114
Kevin Steves12888d12001-03-05 19:50:57 +0000115 __progname = get_progname(argv[0]);
Ben Lindstrom387c4722001-05-08 20:27:25 +0000116 args.list = NULL;
117 addargs(&args, "ssh"); /* overwritten with ssh_program */
118 addargs(&args, "-oFallBackToRsh no");
119 addargs(&args, "-oForwardX11 no");
120 addargs(&args, "-oForwardAgent no");
Ben Lindstrom2b7a0e92001-09-20 00:57:55 +0000121 addargs(&args, "-oClearAllForwardings yes");
Ben Lindstrom387c4722001-05-08 20:27:25 +0000122 ll = SYSLOG_LEVEL_INFO;
123 infile = stdin; /* Read from STDIN unless changed by -b */
Damien Millerd7686fd2001-02-10 00:40:03 +1100124
Ben Lindstrom1e243242001-09-18 05:38:44 +0000125 while ((ch = getopt(argc, argv, "1hvCo:s:S:b:F:")) != -1) {
Damien Millerd7686fd2001-02-10 00:40:03 +1100126 switch (ch) {
127 case 'C':
Ben Lindstrom387c4722001-05-08 20:27:25 +0000128 addargs(&args, "-C");
Damien Millerd7686fd2001-02-10 00:40:03 +1100129 break;
130 case 'v':
Ben Lindstrom387c4722001-05-08 20:27:25 +0000131 if (debug_level < 3) {
132 addargs(&args, "-v");
133 ll = SYSLOG_LEVEL_DEBUG1 + debug_level;
134 }
135 debug_level++;
Damien Millerd7686fd2001-02-10 00:40:03 +1100136 break;
Ben Lindstrom1e243242001-09-18 05:38:44 +0000137 case 'F':
Damien Millerd7686fd2001-02-10 00:40:03 +1100138 case 'o':
Ben Lindstrom1e243242001-09-18 05:38:44 +0000139 addargs(&args, "-%c%s", ch, optarg);
Damien Millerd7686fd2001-02-10 00:40:03 +1100140 break;
141 case '1':
Ben Lindstrom387c4722001-05-08 20:27:25 +0000142 sshver = 1;
Damien Millerd7686fd2001-02-10 00:40:03 +1100143 if (sftp_server == NULL)
144 sftp_server = _PATH_SFTP_SERVER;
145 break;
146 case 's':
147 sftp_server = optarg;
148 break;
149 case 'S':
150 ssh_program = optarg;
151 break;
Ben Lindstrom562c26b2001-03-07 01:26:48 +0000152 case 'b':
153 if (infile == stdin) {
154 infile = fopen(optarg, "r");
Ben Lindstroma3700052001-04-05 23:26:32 +0000155 if (infile == NULL)
Ben Lindstrom562c26b2001-03-07 01:26:48 +0000156 fatal("%s (%s).", strerror(errno), optarg);
Ben Lindstroma3700052001-04-05 23:26:32 +0000157 } else
Ben Lindstrom562c26b2001-03-07 01:26:48 +0000158 fatal("Filename already specified.");
159 break;
Damien Millerd7686fd2001-02-10 00:40:03 +1100160 case 'h':
161 default:
Damien Miller33804262001-02-04 23:20:18 +1100162 usage();
163 }
164 }
165
Ben Lindstrom63667f62001-04-13 00:00:14 +0000166 if (optind == argc || argc > (optind + 2))
Damien Miller33804262001-02-04 23:20:18 +1100167 usage();
168
Ben Lindstrom94924842001-04-10 02:40:17 +0000169 userhost = xstrdup(argv[optind]);
Ben Lindstrom63667f62001-04-13 00:00:14 +0000170 file2 = argv[optind+1];
171
Damien Miller21134b52001-04-16 18:26:41 +1000172 if ((cp = colon(userhost)) != NULL) {
Ben Lindstrom63667f62001-04-13 00:00:14 +0000173 *cp++ = '\0';
174 file1 = cp;
175 }
Damien Millerd7686fd2001-02-10 00:40:03 +1100176
177 if ((host = strchr(userhost, '@')) == NULL)
178 host = userhost;
Damien Miller33804262001-02-04 23:20:18 +1100179 else {
Ben Lindstrom63667f62001-04-13 00:00:14 +0000180 *host++ = '\0';
Damien Millerd7686fd2001-02-10 00:40:03 +1100181 if (!userhost[0]) {
Damien Miller33804262001-02-04 23:20:18 +1100182 fprintf(stderr, "Missing username\n");
183 usage();
184 }
Ben Lindstrom387c4722001-05-08 20:27:25 +0000185 addargs(&args, "-l%s",userhost);
Damien Miller33804262001-02-04 23:20:18 +1100186 }
187
Damien Miller21134b52001-04-16 18:26:41 +1000188 host = cleanhostname(host);
Damien Millerd7686fd2001-02-10 00:40:03 +1100189 if (!*host) {
Damien Miller33804262001-02-04 23:20:18 +1100190 fprintf(stderr, "Missing hostname\n");
191 usage();
192 }
193
Damien Miller33804262001-02-04 23:20:18 +1100194 log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
Ben Lindstrom387c4722001-05-08 20:27:25 +0000195 addargs(&args, "-oProtocol %d", sshver);
Damien Miller33804262001-02-04 23:20:18 +1100196
Ben Lindstrom387c4722001-05-08 20:27:25 +0000197 /* no subsystem if the server-spec contains a '/' */
198 if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
199 addargs(&args, "-s");
200
201 addargs(&args, "%s", host);
202 addargs(&args, "%s", (sftp_server != NULL ? sftp_server : "sftp"));
203 args.list[0] = ssh_program;
Damien Miller33804262001-02-04 23:20:18 +1100204
Damien Millerd7686fd2001-02-10 00:40:03 +1100205 fprintf(stderr, "Connecting to %s...\n", host);
Damien Miller33804262001-02-04 23:20:18 +1100206
Ben Lindstrom387c4722001-05-08 20:27:25 +0000207 connect_to_server(args.list, &in, &out, &sshpid);
Damien Miller33804262001-02-04 23:20:18 +1100208
Ben Lindstrom63667f62001-04-13 00:00:14 +0000209 interactive_loop(in, out, file1, file2);
Damien Miller33804262001-02-04 23:20:18 +1100210
Ben Lindstrom10b9bf92001-02-26 20:04:45 +0000211#if !defined(USE_PIPES)
212 shutdown(in, SHUT_RDWR);
213 shutdown(out, SHUT_RDWR);
214#endif
215
Damien Miller33804262001-02-04 23:20:18 +1100216 close(in);
217 close(out);
Ben Lindstrom562c26b2001-03-07 01:26:48 +0000218 if (infile != stdin)
219 fclose(infile);
Damien Miller33804262001-02-04 23:20:18 +1100220
Damien Millerd7686fd2001-02-10 00:40:03 +1100221 if (waitpid(sshpid, NULL, 0) == -1)
222 fatal("Couldn't wait for ssh process: %s", strerror(errno));
Damien Miller33804262001-02-04 23:20:18 +1100223
224 exit(0);
225}