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61e96248 | 1 | /* |
a96fd7c2 | 2 | * Copyright (c) 2001,2002 Damien Miller. All rights reserved. |
61e96248 | 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 | ||
b69145c2 | 27 | RCSID("$OpenBSD: sftp.c,v 1.29 2002/04/02 17:37:48 markus Exp $"); |
61e96248 | 28 | |
61e96248 | 29 | /* XXX: short-form remote directory listings (like 'ls -C') */ |
30 | ||
31 | #include "buffer.h" | |
32 | #include "xmalloc.h" | |
33 | #include "log.h" | |
34 | #include "pathnames.h" | |
1fcde3fe | 35 | #include "misc.h" |
61e96248 | 36 | |
37 | #include "sftp.h" | |
38 | #include "sftp-common.h" | |
39 | #include "sftp-client.h" | |
40 | #include "sftp-int.h" | |
41 | ||
5152d46f | 42 | #ifdef HAVE___PROGNAME |
43 | extern char *__progname; | |
44 | #else | |
45 | char *__progname; | |
46 | #endif | |
47 | ||
a5ec8a3d | 48 | FILE* infile; |
375f867e | 49 | size_t copy_buffer_len = 32768; |
c25d3df7 | 50 | size_t num_requests = 16; |
0426a3b4 | 51 | |
396c147e | 52 | static void |
a96fd7c2 | 53 | connect_to_server(char *path, char **args, int *in, int *out, pid_t *sshpid) |
61e96248 | 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); | |
a96fd7c2 | 84 | execv(path, args); |
85 | fprintf(stderr, "exec: %s: %s\n", path, strerror(errno)); | |
61e96248 | 86 | exit(1); |
87 | } | |
88 | ||
89 | close(c_in); | |
90 | close(c_out); | |
91 | } | |
92 | ||
396c147e | 93 | static void |
61e96248 | 94 | usage(void) |
95 | { | |
22be05a5 | 96 | extern char *__progname; |
762715ce | 97 | |
f1278af7 | 98 | fprintf(stderr, |
22be05a5 | 99 | "usage: %s [-vC1] [-b batchfile] [-o option] [-s subsystem|path] [-B buffer_size]\n" |
100 | " [-F config] [-P direct server path] [-S program]\n" | |
101 | " [user@]host[:file [file]]\n", __progname); | |
61e96248 | 102 | exit(1); |
103 | } | |
104 | ||
2b87da3b | 105 | int |
61e96248 | 106 | main(int argc, char **argv) |
107 | { | |
8a624ebf | 108 | int in, out, ch; |
61e96248 | 109 | pid_t sshpid; |
edeeab1e | 110 | char *host, *userhost, *cp, *file2; |
8a624ebf | 111 | int debug_level = 0, sshver = 2; |
112 | char *file1 = NULL, *sftp_server = NULL; | |
a96fd7c2 | 113 | char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL; |
8a624ebf | 114 | LogLevel ll = SYSLOG_LEVEL_INFO; |
115 | arglist args; | |
0426a3b4 | 116 | extern int optind; |
117 | extern char *optarg; | |
61e96248 | 118 | |
5152d46f | 119 | __progname = get_progname(argv[0]); |
8a624ebf | 120 | args.list = NULL; |
184eed6a | 121 | addargs(&args, "ssh"); /* overwritten with ssh_program */ |
8a624ebf | 122 | addargs(&args, "-oFallBackToRsh no"); |
123 | addargs(&args, "-oForwardX11 no"); | |
124 | addargs(&args, "-oForwardAgent no"); | |
e1c5bfaf | 125 | addargs(&args, "-oClearAllForwardings yes"); |
8a624ebf | 126 | ll = SYSLOG_LEVEL_INFO; |
127 | infile = stdin; /* Read from STDIN unless changed by -b */ | |
0426a3b4 | 128 | |
c25d3df7 | 129 | while ((ch = getopt(argc, argv, "1hvCo:s:S:b:B:F:P:R:")) != -1) { |
0426a3b4 | 130 | switch (ch) { |
131 | case 'C': | |
8a624ebf | 132 | addargs(&args, "-C"); |
0426a3b4 | 133 | break; |
134 | case 'v': | |
8a624ebf | 135 | if (debug_level < 3) { |
136 | addargs(&args, "-v"); | |
137 | ll = SYSLOG_LEVEL_DEBUG1 + debug_level; | |
138 | } | |
139 | debug_level++; | |
0426a3b4 | 140 | break; |
f1278af7 | 141 | case 'F': |
0426a3b4 | 142 | case 'o': |
f1278af7 | 143 | addargs(&args, "-%c%s", ch, optarg); |
0426a3b4 | 144 | break; |
145 | case '1': | |
8a624ebf | 146 | sshver = 1; |
0426a3b4 | 147 | if (sftp_server == NULL) |
148 | sftp_server = _PATH_SFTP_SERVER; | |
149 | break; | |
150 | case 's': | |
151 | sftp_server = optarg; | |
152 | break; | |
153 | case 'S': | |
154 | ssh_program = optarg; | |
155 | break; | |
a5ec8a3d | 156 | case 'b': |
157 | if (infile == stdin) { | |
158 | infile = fopen(optarg, "r"); | |
cd332296 | 159 | if (infile == NULL) |
a5ec8a3d | 160 | fatal("%s (%s).", strerror(errno), optarg); |
cd332296 | 161 | } else |
a5ec8a3d | 162 | fatal("Filename already specified."); |
163 | break; | |
a96fd7c2 | 164 | case 'P': |
165 | sftp_direct = optarg; | |
166 | break; | |
375f867e | 167 | case 'B': |
168 | copy_buffer_len = strtol(optarg, &cp, 10); | |
169 | if (copy_buffer_len == 0 || *cp != '\0') | |
170 | fatal("Invalid buffer size \"%s\"", optarg); | |
171 | break; | |
c25d3df7 | 172 | case 'R': |
173 | num_requests = strtol(optarg, &cp, 10); | |
174 | if (num_requests == 0 || *cp != '\0') | |
762715ce | 175 | fatal("Invalid number of requests \"%s\"", |
c25d3df7 | 176 | optarg); |
177 | break; | |
0426a3b4 | 178 | case 'h': |
179 | default: | |
61e96248 | 180 | usage(); |
181 | } | |
182 | } | |
183 | ||
b69145c2 | 184 | log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1); |
185 | ||
a96fd7c2 | 186 | if (sftp_direct == NULL) { |
187 | if (optind == argc || argc > (optind + 2)) | |
188 | usage(); | |
61e96248 | 189 | |
a96fd7c2 | 190 | userhost = xstrdup(argv[optind]); |
191 | file2 = argv[optind+1]; | |
edeeab1e | 192 | |
a96fd7c2 | 193 | if ((cp = colon(userhost)) != NULL) { |
194 | *cp++ = '\0'; | |
195 | file1 = cp; | |
196 | } | |
0426a3b4 | 197 | |
a96fd7c2 | 198 | if ((host = strchr(userhost, '@')) == NULL) |
199 | host = userhost; | |
200 | else { | |
201 | *host++ = '\0'; | |
202 | if (!userhost[0]) { | |
203 | fprintf(stderr, "Missing username\n"); | |
204 | usage(); | |
205 | } | |
206 | addargs(&args, "-l%s",userhost); | |
61e96248 | 207 | } |
61e96248 | 208 | |
a96fd7c2 | 209 | host = cleanhostname(host); |
210 | if (!*host) { | |
211 | fprintf(stderr, "Missing hostname\n"); | |
212 | usage(); | |
213 | } | |
61e96248 | 214 | |
a96fd7c2 | 215 | addargs(&args, "-oProtocol %d", sshver); |
8a624ebf | 216 | |
a96fd7c2 | 217 | /* no subsystem if the server-spec contains a '/' */ |
218 | if (sftp_server == NULL || strchr(sftp_server, '/') == NULL) | |
219 | addargs(&args, "-s"); | |
61e96248 | 220 | |
a96fd7c2 | 221 | addargs(&args, "%s", host); |
762715ce | 222 | addargs(&args, "%s", (sftp_server != NULL ? |
a96fd7c2 | 223 | sftp_server : "sftp")); |
224 | args.list[0] = ssh_program; | |
61e96248 | 225 | |
a96fd7c2 | 226 | fprintf(stderr, "Connecting to %s...\n", host); |
762715ce | 227 | connect_to_server(ssh_program, args.list, &in, &out, |
a96fd7c2 | 228 | &sshpid); |
229 | } else { | |
230 | args.list = NULL; | |
231 | addargs(&args, "sftp-server"); | |
61e96248 | 232 | |
a96fd7c2 | 233 | fprintf(stderr, "Attaching to %s...\n", sftp_direct); |
762715ce | 234 | connect_to_server(sftp_direct, args.list, &in, &out, |
a96fd7c2 | 235 | &sshpid); |
236 | } | |
61e96248 | 237 | |
edeeab1e | 238 | interactive_loop(in, out, file1, file2); |
61e96248 | 239 | |
51fb577a | 240 | #if !defined(USE_PIPES) |
875ec275 | 241 | shutdown(in, SHUT_RDWR); |
242 | shutdown(out, SHUT_RDWR); | |
51fb577a | 243 | #endif |
244 | ||
61e96248 | 245 | close(in); |
246 | close(out); | |
a5ec8a3d | 247 | if (infile != stdin) |
248 | fclose(infile); | |
61e96248 | 249 | |
8c38e88b | 250 | while (waitpid(sshpid, NULL, 0) == -1) |
251 | if (errno != EINTR) | |
252 | fatal("Couldn't wait for ssh process: %s", | |
253 | strerror(errno)); | |
61e96248 | 254 | |
255 | exit(0); | |
256 | } |