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3c0ef626 | 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 | ||
27 | RCSID("$OpenBSD: sftp.c,v 1.21 2001/09/19 19:24:19 stevesk 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 | #include "misc.h" | |
37 | ||
38 | #include "sftp.h" | |
39 | #include "sftp-common.h" | |
40 | #include "sftp-client.h" | |
41 | #include "sftp-int.h" | |
42 | ||
43 | #ifdef HAVE___PROGNAME | |
44 | extern char *__progname; | |
45 | #else | |
46 | char *__progname; | |
47 | #endif | |
48 | ||
49 | char *ssh_program = _PATH_SSH_PROGRAM; | |
50 | FILE* infile; | |
51 | ||
52 | static void | |
53 | connect_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); | |
84 | execv(ssh_program, args); | |
85 | fprintf(stderr, "exec: %s: %s\n", ssh_program, strerror(errno)); | |
86 | exit(1); | |
87 | } | |
88 | ||
89 | close(c_in); | |
90 | close(c_out); | |
91 | } | |
92 | ||
93 | static void | |
94 | usage(void) | |
95 | { | |
96 | fprintf(stderr, | |
97 | "usage: sftp [-1Cv] [-b batchfile] [-F config] [-o option] [-s subsystem|path]\n" | |
98 | " [-S program] [user@]host[:file [file]]\n"); | |
99 | exit(1); | |
100 | } | |
101 | ||
102 | int | |
103 | main(int argc, char **argv) | |
104 | { | |
105 | int in, out, ch; | |
106 | pid_t sshpid; | |
107 | char *host, *userhost, *cp, *file2; | |
108 | int debug_level = 0, sshver = 2; | |
109 | char *file1 = NULL, *sftp_server = NULL; | |
110 | LogLevel ll = SYSLOG_LEVEL_INFO; | |
111 | arglist args; | |
112 | extern int optind; | |
113 | extern char *optarg; | |
114 | ||
115 | __progname = get_progname(argv[0]); | |
116 | 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"); | |
121 | addargs(&args, "-oClearAllForwardings yes"); | |
122 | ll = SYSLOG_LEVEL_INFO; | |
123 | infile = stdin; /* Read from STDIN unless changed by -b */ | |
124 | ||
125 | while ((ch = getopt(argc, argv, "1hvCo:s:S:b:F:")) != -1) { | |
126 | switch (ch) { | |
127 | case 'C': | |
128 | addargs(&args, "-C"); | |
129 | break; | |
130 | case 'v': | |
131 | if (debug_level < 3) { | |
132 | addargs(&args, "-v"); | |
133 | ll = SYSLOG_LEVEL_DEBUG1 + debug_level; | |
134 | } | |
135 | debug_level++; | |
136 | break; | |
137 | case 'F': | |
138 | case 'o': | |
139 | addargs(&args, "-%c%s", ch, optarg); | |
140 | break; | |
141 | case '1': | |
142 | sshver = 1; | |
143 | 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; | |
152 | case 'b': | |
153 | if (infile == stdin) { | |
154 | infile = fopen(optarg, "r"); | |
155 | if (infile == NULL) | |
156 | fatal("%s (%s).", strerror(errno), optarg); | |
157 | } else | |
158 | fatal("Filename already specified."); | |
159 | break; | |
160 | case 'h': | |
161 | default: | |
162 | usage(); | |
163 | } | |
164 | } | |
165 | ||
166 | if (optind == argc || argc > (optind + 2)) | |
167 | usage(); | |
168 | ||
169 | userhost = xstrdup(argv[optind]); | |
170 | file2 = argv[optind+1]; | |
171 | ||
172 | if ((cp = colon(userhost)) != NULL) { | |
173 | *cp++ = '\0'; | |
174 | file1 = cp; | |
175 | } | |
176 | ||
177 | if ((host = strchr(userhost, '@')) == NULL) | |
178 | host = userhost; | |
179 | else { | |
180 | *host++ = '\0'; | |
181 | if (!userhost[0]) { | |
182 | fprintf(stderr, "Missing username\n"); | |
183 | usage(); | |
184 | } | |
185 | addargs(&args, "-l%s",userhost); | |
186 | } | |
187 | ||
188 | host = cleanhostname(host); | |
189 | if (!*host) { | |
190 | fprintf(stderr, "Missing hostname\n"); | |
191 | usage(); | |
192 | } | |
193 | ||
194 | log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1); | |
195 | addargs(&args, "-oProtocol %d", sshver); | |
196 | ||
197 | /* 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; | |
204 | ||
205 | fprintf(stderr, "Connecting to %s...\n", host); | |
206 | ||
207 | connect_to_server(args.list, &in, &out, &sshpid); | |
208 | ||
209 | interactive_loop(in, out, file1, file2); | |
210 | ||
211 | #if !defined(USE_PIPES) | |
212 | shutdown(in, SHUT_RDWR); | |
213 | shutdown(out, SHUT_RDWR); | |
214 | #endif | |
215 | ||
216 | close(in); | |
217 | close(out); | |
218 | if (infile != stdin) | |
219 | fclose(infile); | |
220 | ||
221 | if (waitpid(sshpid, NULL, 0) == -1) | |
222 | fatal("Couldn't wait for ssh process: %s", strerror(errno)); | |
223 | ||
224 | exit(0); | |
225 | } |