1/*
2 * Copyright (c) 2001,2002 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
27RCSID("$OpenBSD: sftp.c,v 1.37 2003/07/10 20:05:55 markus Exp $");
28
29#include "buffer.h"
30#include "xmalloc.h"
31#include "log.h"
32#include "pathnames.h"
33#include "misc.h"
34
35#include "sftp.h"
36#include "sftp-common.h"
37#include "sftp-client.h"
38#include "sftp-int.h"
39
40#ifdef HAVE___PROGNAME
41extern char *__progname;
42#else
43char *__progname;
44#endif
45
46FILE* infile;
47size_t copy_buffer_len = 32768;
48size_t num_requests = 16;
49static pid_t sshpid = -1;
50
51extern int showprogress;
52
53static void
54killchild(int signo)
55{
56 if (sshpid > 1)
57 kill(sshpid, signo);
58
59 _exit(1);
60}
61
62static void
63connect_to_server(char *path, char **args, int *in, int *out)
64{
65 int c_in, c_out;
66
67#ifdef USE_PIPES
68 int pin[2], pout[2];
69
70 if ((pipe(pin) == -1) || (pipe(pout) == -1))
71 fatal("pipe: %s", strerror(errno));
72 *in = pin[0];
73 *out = pout[1];
74 c_in = pout[0];
75 c_out = pin[1];
76#else /* USE_PIPES */
77 int inout[2];
78
79 if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1)
80 fatal("socketpair: %s", strerror(errno));
81 *in = *out = inout[0];
82 c_in = c_out = inout[1];
83#endif /* USE_PIPES */
84
85 if ((sshpid = fork()) == -1)
86 fatal("fork: %s", strerror(errno));
87 else if (sshpid == 0) {
88 if ((dup2(c_in, STDIN_FILENO) == -1) ||
89 (dup2(c_out, STDOUT_FILENO) == -1)) {
90 fprintf(stderr, "dup2: %s\n", strerror(errno));
91 exit(1);
92 }
93 close(*in);
94 close(*out);
95 close(c_in);
96 close(c_out);
97 execv(path, args);
98 fprintf(stderr, "exec: %s: %s\n", path, strerror(errno));
99 exit(1);
100 }
101
102 signal(SIGTERM, killchild);
103 signal(SIGINT, killchild);
104 signal(SIGHUP, killchild);
105 close(c_in);
106 close(c_out);
107}
108
109static void
110usage(void)
111{
112 extern char *__progname;
113
114 fprintf(stderr,
115 "usage: %s [-vC1] [-b batchfile] [-o ssh_option] [-s subsystem | sftp_server]\n"
116 " [-B buffer_size] [-F ssh_config] [-P sftp_server path]\n"
117 " [-R num_requests] [-S program]\n"
118 " [user@]host[:file [file]]\n", __progname);
119 exit(1);
120}
121
122int
123main(int argc, char **argv)
124{
125 int in, out, ch, err;
126 char *host, *userhost, *cp, *file2;
127 int debug_level = 0, sshver = 2;
128 char *file1 = NULL, *sftp_server = NULL;
129 char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL;
130 LogLevel ll = SYSLOG_LEVEL_INFO;
131 arglist args;
132 extern int optind;
133 extern char *optarg;
134
135 __progname = ssh_get_progname(argv[0]);
136 args.list = NULL;
137 addargs(&args, "ssh"); /* overwritten with ssh_program */
138 addargs(&args, "-oForwardX11 no");
139 addargs(&args, "-oForwardAgent no");
140 addargs(&args, "-oClearAllForwardings yes");
141 ll = SYSLOG_LEVEL_INFO;
142 infile = stdin; /* Read from STDIN unless changed by -b */
143
144 while ((ch = getopt(argc, argv, "1hvCo:s:S:b:B:F:P:R:")) != -1) {
145 switch (ch) {
146 case 'C':
147 addargs(&args, "-C");
148 break;
149 case 'v':
150 if (debug_level < 3) {
151 addargs(&args, "-v");
152 ll = SYSLOG_LEVEL_DEBUG1 + debug_level;
153 }
154 debug_level++;
155 break;
156 case 'F':
157 case 'o':
158 addargs(&args, "-%c%s", ch, optarg);
159 break;
160 case '1':
161 sshver = 1;
162 if (sftp_server == NULL)
163 sftp_server = _PATH_SFTP_SERVER;
164 break;
165 case 's':
166 sftp_server = optarg;
167 break;
168 case 'S':
169 ssh_program = optarg;
170 break;
171 case 'b':
172 if (infile == stdin) {
173 infile = fopen(optarg, "r");
174 if (infile == NULL)
175 fatal("%s (%s).", strerror(errno), optarg);
176 } else
177 fatal("Filename already specified.");
178 showprogress = 0;
179 break;
180 case 'P':
181 sftp_direct = optarg;
182 break;
183 case 'B':
184 copy_buffer_len = strtol(optarg, &cp, 10);
185 if (copy_buffer_len == 0 || *cp != '\0')
186 fatal("Invalid buffer size \"%s\"", optarg);
187 break;
188 case 'R':
189 num_requests = strtol(optarg, &cp, 10);
190 if (num_requests == 0 || *cp != '\0')
191 fatal("Invalid number of requests \"%s\"",
192 optarg);
193 break;
194 case 'h':
195 default:
196 usage();
197 }
198 }
199
200 log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
201
202 if (sftp_direct == NULL) {
203 if (optind == argc || argc > (optind + 2))
204 usage();
205
206 userhost = xstrdup(argv[optind]);
207 file2 = argv[optind+1];
208
209 if ((cp = colon(userhost)) != NULL) {
210 *cp++ = '\0';
211 file1 = cp;
212 }
213
214 if ((host = strrchr(userhost, '@')) == NULL)
215 host = userhost;
216 else {
217 *host++ = '\0';
218 if (!userhost[0]) {
219 fprintf(stderr, "Missing username\n");
220 usage();
221 }
222 addargs(&args, "-l%s",userhost);
223 }
224
225 host = cleanhostname(host);
226 if (!*host) {
227 fprintf(stderr, "Missing hostname\n");
228 usage();
229 }
230
231 addargs(&args, "-oProtocol %d", sshver);
232
233 /* no subsystem if the server-spec contains a '/' */
234 if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
235 addargs(&args, "-s");
236
237 addargs(&args, "%s", host);
238 addargs(&args, "%s", (sftp_server != NULL ?
239 sftp_server : "sftp"));
240 args.list[0] = ssh_program;
241
242 fprintf(stderr, "Connecting to %s...\n", host);
243 connect_to_server(ssh_program, args.list, &in, &out);
244 } else {
245 args.list = NULL;
246 addargs(&args, "sftp-server");
247
248 fprintf(stderr, "Attaching to %s...\n", sftp_direct);
249 connect_to_server(sftp_direct, args.list, &in, &out);
250 }
251
252 err = interactive_loop(in, out, file1, file2);
253
254#if !defined(USE_PIPES)
255 shutdown(in, SHUT_RDWR);
256 shutdown(out, SHUT_RDWR);
257#endif
258
259 close(in);
260 close(out);
261 if (infile != stdin)
262 fclose(infile);
263
264 while (waitpid(sshpid, NULL, 0) == -1)
265 if (errno != EINTR)
266 fatal("Couldn't wait for ssh process: %s",
267 strerror(errno));
268
269 exit(err == 0 ? 0 : 1);
270}
2 * Copyright (c) 2001,2002 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
27RCSID("$OpenBSD: sftp.c,v 1.37 2003/07/10 20:05:55 markus Exp $");
28
29#include "buffer.h"
30#include "xmalloc.h"
31#include "log.h"
32#include "pathnames.h"
33#include "misc.h"
34
35#include "sftp.h"
36#include "sftp-common.h"
37#include "sftp-client.h"
38#include "sftp-int.h"
39
40#ifdef HAVE___PROGNAME
41extern char *__progname;
42#else
43char *__progname;
44#endif
45
46FILE* infile;
47size_t copy_buffer_len = 32768;
48size_t num_requests = 16;
49static pid_t sshpid = -1;
50
51extern int showprogress;
52
53static void
54killchild(int signo)
55{
56 if (sshpid > 1)
57 kill(sshpid, signo);
58
59 _exit(1);
60}
61
62static void
63connect_to_server(char *path, char **args, int *in, int *out)
64{
65 int c_in, c_out;
66
67#ifdef USE_PIPES
68 int pin[2], pout[2];
69
70 if ((pipe(pin) == -1) || (pipe(pout) == -1))
71 fatal("pipe: %s", strerror(errno));
72 *in = pin[0];
73 *out = pout[1];
74 c_in = pout[0];
75 c_out = pin[1];
76#else /* USE_PIPES */
77 int inout[2];
78
79 if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1)
80 fatal("socketpair: %s", strerror(errno));
81 *in = *out = inout[0];
82 c_in = c_out = inout[1];
83#endif /* USE_PIPES */
84
85 if ((sshpid = fork()) == -1)
86 fatal("fork: %s", strerror(errno));
87 else if (sshpid == 0) {
88 if ((dup2(c_in, STDIN_FILENO) == -1) ||
89 (dup2(c_out, STDOUT_FILENO) == -1)) {
90 fprintf(stderr, "dup2: %s\n", strerror(errno));
91 exit(1);
92 }
93 close(*in);
94 close(*out);
95 close(c_in);
96 close(c_out);
97 execv(path, args);
98 fprintf(stderr, "exec: %s: %s\n", path, strerror(errno));
99 exit(1);
100 }
101
102 signal(SIGTERM, killchild);
103 signal(SIGINT, killchild);
104 signal(SIGHUP, killchild);
105 close(c_in);
106 close(c_out);
107}
108
109static void
110usage(void)
111{
112 extern char *__progname;
113
114 fprintf(stderr,
115 "usage: %s [-vC1] [-b batchfile] [-o ssh_option] [-s subsystem | sftp_server]\n"
116 " [-B buffer_size] [-F ssh_config] [-P sftp_server path]\n"
117 " [-R num_requests] [-S program]\n"
118 " [user@]host[:file [file]]\n", __progname);
119 exit(1);
120}
121
122int
123main(int argc, char **argv)
124{
125 int in, out, ch, err;
126 char *host, *userhost, *cp, *file2;
127 int debug_level = 0, sshver = 2;
128 char *file1 = NULL, *sftp_server = NULL;
129 char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL;
130 LogLevel ll = SYSLOG_LEVEL_INFO;
131 arglist args;
132 extern int optind;
133 extern char *optarg;
134
135 __progname = ssh_get_progname(argv[0]);
136 args.list = NULL;
137 addargs(&args, "ssh"); /* overwritten with ssh_program */
138 addargs(&args, "-oForwardX11 no");
139 addargs(&args, "-oForwardAgent no");
140 addargs(&args, "-oClearAllForwardings yes");
141 ll = SYSLOG_LEVEL_INFO;
142 infile = stdin; /* Read from STDIN unless changed by -b */
143
144 while ((ch = getopt(argc, argv, "1hvCo:s:S:b:B:F:P:R:")) != -1) {
145 switch (ch) {
146 case 'C':
147 addargs(&args, "-C");
148 break;
149 case 'v':
150 if (debug_level < 3) {
151 addargs(&args, "-v");
152 ll = SYSLOG_LEVEL_DEBUG1 + debug_level;
153 }
154 debug_level++;
155 break;
156 case 'F':
157 case 'o':
158 addargs(&args, "-%c%s", ch, optarg);
159 break;
160 case '1':
161 sshver = 1;
162 if (sftp_server == NULL)
163 sftp_server = _PATH_SFTP_SERVER;
164 break;
165 case 's':
166 sftp_server = optarg;
167 break;
168 case 'S':
169 ssh_program = optarg;
170 break;
171 case 'b':
172 if (infile == stdin) {
173 infile = fopen(optarg, "r");
174 if (infile == NULL)
175 fatal("%s (%s).", strerror(errno), optarg);
176 } else
177 fatal("Filename already specified.");
178 showprogress = 0;
179 break;
180 case 'P':
181 sftp_direct = optarg;
182 break;
183 case 'B':
184 copy_buffer_len = strtol(optarg, &cp, 10);
185 if (copy_buffer_len == 0 || *cp != '\0')
186 fatal("Invalid buffer size \"%s\"", optarg);
187 break;
188 case 'R':
189 num_requests = strtol(optarg, &cp, 10);
190 if (num_requests == 0 || *cp != '\0')
191 fatal("Invalid number of requests \"%s\"",
192 optarg);
193 break;
194 case 'h':
195 default:
196 usage();
197 }
198 }
199
200 log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
201
202 if (sftp_direct == NULL) {
203 if (optind == argc || argc > (optind + 2))
204 usage();
205
206 userhost = xstrdup(argv[optind]);
207 file2 = argv[optind+1];
208
209 if ((cp = colon(userhost)) != NULL) {
210 *cp++ = '\0';
211 file1 = cp;
212 }
213
214 if ((host = strrchr(userhost, '@')) == NULL)
215 host = userhost;
216 else {
217 *host++ = '\0';
218 if (!userhost[0]) {
219 fprintf(stderr, "Missing username\n");
220 usage();
221 }
222 addargs(&args, "-l%s",userhost);
223 }
224
225 host = cleanhostname(host);
226 if (!*host) {
227 fprintf(stderr, "Missing hostname\n");
228 usage();
229 }
230
231 addargs(&args, "-oProtocol %d", sshver);
232
233 /* no subsystem if the server-spec contains a '/' */
234 if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
235 addargs(&args, "-s");
236
237 addargs(&args, "%s", host);
238 addargs(&args, "%s", (sftp_server != NULL ?
239 sftp_server : "sftp"));
240 args.list[0] = ssh_program;
241
242 fprintf(stderr, "Connecting to %s...\n", host);
243 connect_to_server(ssh_program, args.list, &in, &out);
244 } else {
245 args.list = NULL;
246 addargs(&args, "sftp-server");
247
248 fprintf(stderr, "Attaching to %s...\n", sftp_direct);
249 connect_to_server(sftp_direct, args.list, &in, &out);
250 }
251
252 err = interactive_loop(in, out, file1, file2);
253
254#if !defined(USE_PIPES)
255 shutdown(in, SHUT_RDWR);
256 shutdown(out, SHUT_RDWR);
257#endif
258
259 close(in);
260 close(out);
261 if (infile != stdin)
262 fclose(infile);
263
264 while (waitpid(sshpid, NULL, 0) == -1)
265 if (errno != EINTR)
266 fatal("Couldn't wait for ssh process: %s",
267 strerror(errno));
268
269 exit(err == 0 ? 0 : 1);
270}