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-rw-r--r--other/ssharp/sftp.c283
1 files changed, 283 insertions, 0 deletions
diff --git a/other/ssharp/sftp.c b/other/ssharp/sftp.c
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1/*
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
27RCSID("$OpenBSD: sftp.c,v 1.15 2001/04/16 02:31:44 mouring Exp $");
28
29/* XXX: commandline mode */
30/* 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"
36
37#include "sftp.h"
38#include "sftp-common.h"
39#include "sftp-client.h"
40#include "sftp-int.h"
41
42#ifdef HAVE___PROGNAME
43extern char *__progname;
44#else
45char *__progname;
46#endif
47
48#include "scp-common.h"
49
50int use_ssh1 = 0;
51char *ssh_program = _PATH_SSH_PROGRAM;
52char *sftp_server = NULL;
53FILE* infile;
54
55void
56connect_to_server(char **args, int *in, int *out, pid_t *sshpid)
57{
58 int c_in, c_out;
59#ifdef USE_PIPES
60 int pin[2], pout[2];
61 if ((pipe(pin) == -1) || (pipe(pout) == -1))
62 fatal("pipe: %s", strerror(errno));
63 *in = pin[0];
64 *out = pout[1];
65 c_in = pout[0];
66 c_out = pin[1];
67#else /* USE_PIPES */
68 int inout[2];
69 if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1)
70 fatal("socketpair: %s", strerror(errno));
71 *in = *out = inout[0];
72 c_in = c_out = inout[1];
73#endif /* USE_PIPES */
74
75 if ((*sshpid = fork()) == -1)
76 fatal("fork: %s", strerror(errno));
77 else if (*sshpid == 0) {
78 if ((dup2(c_in, STDIN_FILENO) == -1) ||
79 (dup2(c_out, STDOUT_FILENO) == -1)) {
80 fprintf(stderr, "dup2: %s\n", strerror(errno));
81 exit(1);
82 }
83 close(*in);
84 close(*out);
85 close(c_in);
86 close(c_out);
87 execv(ssh_program, args);
88 fprintf(stderr, "exec: %s: %s\n", ssh_program, strerror(errno));
89 exit(1);
90 }
91
92 close(c_in);
93 close(c_out);
94}
95
96char **
97make_ssh_args(char *add_arg)
98{
99 static char **args = NULL;
100 static int nargs = 0;
101 char debug_buf[4096];
102 int i;
103
104 /* Init args array */
105 if (args == NULL) {
106 nargs = 2;
107 i = 0;
108 args = xmalloc(sizeof(*args) * nargs);
109 args[i++] = "ssh";
110 args[i++] = NULL;
111 }
112
113 /* If asked to add args, then do so and return */
114 if (add_arg) {
115 i = nargs++ - 1;
116 args = xrealloc(args, sizeof(*args) * nargs);
117 args[i++] = add_arg;
118 args[i++] = NULL;
119 return(NULL);
120 }
121
122 /* no subsystem if the server-spec contains a '/' */
123 if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
124 make_ssh_args("-s");
125 make_ssh_args("-oForwardX11=no");
126 make_ssh_args("-oForwardAgent=no");
127 make_ssh_args(use_ssh1 ? "-oProtocol=1" : "-oProtocol=2");
128
129 /* Otherwise finish up and return the arg array */
130 if (sftp_server != NULL)
131 make_ssh_args(sftp_server);
132 else
133 make_ssh_args("sftp");
134
135 /* XXX: overflow - doesn't grow debug_buf */
136 debug_buf[0] = '\0';
137 for(i = 0; args[i]; i++) {
138 if (i)
139 strlcat(debug_buf, " ", sizeof(debug_buf));
140
141 strlcat(debug_buf, args[i], sizeof(debug_buf));
142 }
143 debug("SSH args \"%s\"", debug_buf);
144
145 return(args);
146}
147
148void
149usage(void)
150{
151 fprintf(stderr, "usage: sftp [-1vC] [-b batchfile] [-osshopt=value] [user@]host[:file [file]]\n");
152 exit(1);
153}
154
155int
156main(int argc, char **argv)
157{
158 int in, out, ch, debug_level, compress_flag;
159 pid_t sshpid;
160 char *file1 = NULL;
161 char *host, *userhost, *cp, *file2;
162 LogLevel ll;
163 extern int optind;
164 extern char *optarg;
165
166 __progname = get_progname(argv[0]);
167 infile = stdin; /* Read from STDIN unless changed by -b */
168 debug_level = compress_flag = 0;
169
170 while ((ch = getopt(argc, argv, "1hvCo:s:S:b:")) != -1) {
171 switch (ch) {
172 case 'C':
173 compress_flag = 1;
174 break;
175 case 'v':
176 debug_level = MIN(3, debug_level + 1);
177 break;
178 case 'o':
179 make_ssh_args("-o");
180 make_ssh_args(optarg);
181 break;
182 case '1':
183 use_ssh1 = 1;
184 if (sftp_server == NULL)
185 sftp_server = _PATH_SFTP_SERVER;
186 break;
187 case 's':
188 sftp_server = optarg;
189 break;
190 case 'S':
191 ssh_program = optarg;
192 break;
193 case 'b':
194 if (infile == stdin) {
195 infile = fopen(optarg, "r");
196 if (infile == NULL)
197 fatal("%s (%s).", strerror(errno), optarg);
198 } else
199 fatal("Filename already specified.");
200 break;
201 case 'h':
202 default:
203 usage();
204 }
205 }
206
207 if (optind == argc || argc > (optind + 2))
208 usage();
209
210 userhost = xstrdup(argv[optind]);
211 file2 = argv[optind+1];
212
213 if ((cp = colon(userhost)) != NULL) {
214 *cp++ = '\0';
215 file1 = cp;
216 }
217
218 if ((host = strchr(userhost, '@')) == NULL)
219 host = userhost;
220 else {
221 *host++ = '\0';
222 if (!userhost[0]) {
223 fprintf(stderr, "Missing username\n");
224 usage();
225 }
226 make_ssh_args("-l");
227 make_ssh_args(userhost);
228 }
229
230 host = cleanhostname(host);
231 if (!*host) {
232 fprintf(stderr, "Missing hostname\n");
233 usage();
234 }
235
236 /* Set up logging and debug '-d' arguments to ssh */
237 ll = SYSLOG_LEVEL_INFO;
238 switch (debug_level) {
239 case 1:
240 ll = SYSLOG_LEVEL_DEBUG1;
241 make_ssh_args("-v");
242 break;
243 case 2:
244 ll = SYSLOG_LEVEL_DEBUG2;
245 make_ssh_args("-v");
246 make_ssh_args("-v");
247 break;
248 case 3:
249 ll = SYSLOG_LEVEL_DEBUG3;
250 make_ssh_args("-v");
251 make_ssh_args("-v");
252 make_ssh_args("-v");
253 break;
254 }
255
256 if (compress_flag)
257 make_ssh_args("-C");
258
259 log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
260
261 make_ssh_args(host);
262
263 fprintf(stderr, "Connecting to %s...\n", host);
264
265 connect_to_server(make_ssh_args(NULL), &in, &out, &sshpid);
266
267 interactive_loop(in, out, file1, file2);
268
269#if !defined(USE_PIPES)
270 shutdown(in, SHUT_RDWR);
271 shutdown(out, SHUT_RDWR);
272#endif
273
274 close(in);
275 close(out);
276 if (infile != stdin)
277 fclose(infile);
278
279 if (waitpid(sshpid, NULL, 0) == -1)
280 fatal("Couldn't wait for ssh process: %s", strerror(errno));
281
282 exit(0);
283}