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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 | ||
375f867e | 27 | RCSID("$OpenBSD: sftp.c,v 1.24 2002/02/05 00:00:46 djm 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; |
0426a3b4 | 50 | |
396c147e | 51 | static void |
a96fd7c2 | 52 | connect_to_server(char *path, char **args, int *in, int *out, pid_t *sshpid) |
61e96248 | 53 | { |
54 | int c_in, c_out; | |
55 | #ifdef USE_PIPES | |
56 | int pin[2], pout[2]; | |
57 | if ((pipe(pin) == -1) || (pipe(pout) == -1)) | |
58 | fatal("pipe: %s", strerror(errno)); | |
59 | *in = pin[0]; | |
60 | *out = pout[1]; | |
61 | c_in = pout[0]; | |
62 | c_out = pin[1]; | |
63 | #else /* USE_PIPES */ | |
64 | int inout[2]; | |
65 | if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1) | |
66 | fatal("socketpair: %s", strerror(errno)); | |
67 | *in = *out = inout[0]; | |
68 | c_in = c_out = inout[1]; | |
69 | #endif /* USE_PIPES */ | |
70 | ||
71 | if ((*sshpid = fork()) == -1) | |
72 | fatal("fork: %s", strerror(errno)); | |
73 | else if (*sshpid == 0) { | |
74 | if ((dup2(c_in, STDIN_FILENO) == -1) || | |
75 | (dup2(c_out, STDOUT_FILENO) == -1)) { | |
76 | fprintf(stderr, "dup2: %s\n", strerror(errno)); | |
77 | exit(1); | |
78 | } | |
79 | close(*in); | |
80 | close(*out); | |
81 | close(c_in); | |
82 | close(c_out); | |
a96fd7c2 | 83 | execv(path, args); |
84 | fprintf(stderr, "exec: %s: %s\n", path, strerror(errno)); | |
61e96248 | 85 | exit(1); |
86 | } | |
87 | ||
88 | close(c_in); | |
89 | close(c_out); | |
90 | } | |
91 | ||
396c147e | 92 | static void |
61e96248 | 93 | usage(void) |
94 | { | |
f1278af7 | 95 | fprintf(stderr, |
e3c1c3e6 | 96 | "usage: sftp [-1Cv] [-b batchfile] [-F config] [-o option] [-s subsystem|path]\n" |
375f867e | 97 | " [-P direct server path] [-S program] \n" |
98 | " [-B buffer_size] [user@]host[:file [file]]\n"); | |
61e96248 | 99 | exit(1); |
100 | } | |
101 | ||
2b87da3b | 102 | int |
61e96248 | 103 | main(int argc, char **argv) |
104 | { | |
8a624ebf | 105 | int in, out, ch; |
61e96248 | 106 | pid_t sshpid; |
edeeab1e | 107 | char *host, *userhost, *cp, *file2; |
8a624ebf | 108 | int debug_level = 0, sshver = 2; |
109 | char *file1 = NULL, *sftp_server = NULL; | |
a96fd7c2 | 110 | char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL; |
8a624ebf | 111 | LogLevel ll = SYSLOG_LEVEL_INFO; |
112 | arglist args; | |
0426a3b4 | 113 | extern int optind; |
114 | extern char *optarg; | |
61e96248 | 115 | |
5152d46f | 116 | __progname = get_progname(argv[0]); |
8a624ebf | 117 | args.list = NULL; |
184eed6a | 118 | addargs(&args, "ssh"); /* overwritten with ssh_program */ |
8a624ebf | 119 | addargs(&args, "-oFallBackToRsh no"); |
120 | addargs(&args, "-oForwardX11 no"); | |
121 | addargs(&args, "-oForwardAgent no"); | |
e1c5bfaf | 122 | addargs(&args, "-oClearAllForwardings yes"); |
8a624ebf | 123 | ll = SYSLOG_LEVEL_INFO; |
124 | infile = stdin; /* Read from STDIN unless changed by -b */ | |
0426a3b4 | 125 | |
375f867e | 126 | while ((ch = getopt(argc, argv, "1hvCo:s:S:b:B:F:P:")) != -1) { |
0426a3b4 | 127 | switch (ch) { |
128 | case 'C': | |
8a624ebf | 129 | addargs(&args, "-C"); |
0426a3b4 | 130 | break; |
131 | case 'v': | |
8a624ebf | 132 | if (debug_level < 3) { |
133 | addargs(&args, "-v"); | |
134 | ll = SYSLOG_LEVEL_DEBUG1 + debug_level; | |
135 | } | |
136 | debug_level++; | |
0426a3b4 | 137 | break; |
f1278af7 | 138 | case 'F': |
0426a3b4 | 139 | case 'o': |
f1278af7 | 140 | addargs(&args, "-%c%s", ch, optarg); |
0426a3b4 | 141 | break; |
142 | case '1': | |
8a624ebf | 143 | sshver = 1; |
0426a3b4 | 144 | if (sftp_server == NULL) |
145 | sftp_server = _PATH_SFTP_SERVER; | |
146 | break; | |
147 | case 's': | |
148 | sftp_server = optarg; | |
149 | break; | |
150 | case 'S': | |
151 | ssh_program = optarg; | |
152 | break; | |
a5ec8a3d | 153 | case 'b': |
154 | if (infile == stdin) { | |
155 | infile = fopen(optarg, "r"); | |
cd332296 | 156 | if (infile == NULL) |
a5ec8a3d | 157 | fatal("%s (%s).", strerror(errno), optarg); |
cd332296 | 158 | } else |
a5ec8a3d | 159 | fatal("Filename already specified."); |
160 | break; | |
a96fd7c2 | 161 | case 'P': |
162 | sftp_direct = optarg; | |
163 | break; | |
375f867e | 164 | case 'B': |
165 | copy_buffer_len = strtol(optarg, &cp, 10); | |
166 | if (copy_buffer_len == 0 || *cp != '\0') | |
167 | fatal("Invalid buffer size \"%s\"", optarg); | |
168 | break; | |
0426a3b4 | 169 | case 'h': |
170 | default: | |
61e96248 | 171 | usage(); |
172 | } | |
173 | } | |
174 | ||
a96fd7c2 | 175 | if (sftp_direct == NULL) { |
176 | if (optind == argc || argc > (optind + 2)) | |
177 | usage(); | |
61e96248 | 178 | |
a96fd7c2 | 179 | userhost = xstrdup(argv[optind]); |
180 | file2 = argv[optind+1]; | |
edeeab1e | 181 | |
a96fd7c2 | 182 | if ((cp = colon(userhost)) != NULL) { |
183 | *cp++ = '\0'; | |
184 | file1 = cp; | |
185 | } | |
0426a3b4 | 186 | |
a96fd7c2 | 187 | if ((host = strchr(userhost, '@')) == NULL) |
188 | host = userhost; | |
189 | else { | |
190 | *host++ = '\0'; | |
191 | if (!userhost[0]) { | |
192 | fprintf(stderr, "Missing username\n"); | |
193 | usage(); | |
194 | } | |
195 | addargs(&args, "-l%s",userhost); | |
61e96248 | 196 | } |
61e96248 | 197 | |
a96fd7c2 | 198 | host = cleanhostname(host); |
199 | if (!*host) { | |
200 | fprintf(stderr, "Missing hostname\n"); | |
201 | usage(); | |
202 | } | |
61e96248 | 203 | |
a96fd7c2 | 204 | log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1); |
205 | addargs(&args, "-oProtocol %d", sshver); | |
8a624ebf | 206 | |
a96fd7c2 | 207 | /* no subsystem if the server-spec contains a '/' */ |
208 | if (sftp_server == NULL || strchr(sftp_server, '/') == NULL) | |
209 | addargs(&args, "-s"); | |
61e96248 | 210 | |
a96fd7c2 | 211 | addargs(&args, "%s", host); |
212 | addargs(&args, "%s", (sftp_server != NULL ? | |
213 | sftp_server : "sftp")); | |
214 | args.list[0] = ssh_program; | |
61e96248 | 215 | |
a96fd7c2 | 216 | fprintf(stderr, "Connecting to %s...\n", host); |
217 | connect_to_server(ssh_program, args.list, &in, &out, | |
218 | &sshpid); | |
219 | } else { | |
220 | args.list = NULL; | |
221 | addargs(&args, "sftp-server"); | |
61e96248 | 222 | |
a96fd7c2 | 223 | fprintf(stderr, "Attaching to %s...\n", sftp_direct); |
224 | connect_to_server(sftp_direct, args.list, &in, &out, | |
225 | &sshpid); | |
226 | } | |
61e96248 | 227 | |
edeeab1e | 228 | interactive_loop(in, out, file1, file2); |
61e96248 | 229 | |
51fb577a | 230 | #if !defined(USE_PIPES) |
231 | shutdown(in, SHUT_RDWR); | |
232 | shutdown(out, SHUT_RDWR); | |
233 | #endif | |
234 | ||
61e96248 | 235 | close(in); |
236 | close(out); | |
a5ec8a3d | 237 | if (infile != stdin) |
238 | fclose(infile); | |
61e96248 | 239 | |
0426a3b4 | 240 | if (waitpid(sshpid, NULL, 0) == -1) |
241 | fatal("Couldn't wait for ssh process: %s", strerror(errno)); | |
61e96248 | 242 | |
243 | exit(0); | |
244 | } |