Annotation of src/usr.bin/ssh/sftp.c, Revision 1.23
1.1 djm 1: /*
1.23 ! djm 2: * Copyright (c) 2001,2002 Damien Miller. All rights reserved.
1.1 djm 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:
1.23 ! djm 27: RCSID("$OpenBSD: sftp.c,v 1.22 2001/12/19 07:18:56 deraadt Exp $");
1.1 djm 28:
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"
1.16 mouring 35: #include "misc.h"
1.1 djm 36:
37: #include "sftp.h"
38: #include "sftp-common.h"
39: #include "sftp-client.h"
40: #include "sftp-int.h"
1.15 mouring 41:
1.10 deraadt 42: FILE* infile;
1.7 markus 43:
1.18 itojun 44: static void
1.23 ! djm 45: connect_to_server(char *path, char **args, int *in, int *out, pid_t *sshpid)
1.1 djm 46: {
47: int c_in, c_out;
48: #ifdef USE_PIPES
49: int pin[2], pout[2];
50: if ((pipe(pin) == -1) || (pipe(pout) == -1))
51: fatal("pipe: %s", strerror(errno));
52: *in = pin[0];
53: *out = pout[1];
54: c_in = pout[0];
55: c_out = pin[1];
56: #else /* USE_PIPES */
57: int inout[2];
58: if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1)
59: fatal("socketpair: %s", strerror(errno));
60: *in = *out = inout[0];
61: c_in = c_out = inout[1];
62: #endif /* USE_PIPES */
63:
64: if ((*sshpid = fork()) == -1)
65: fatal("fork: %s", strerror(errno));
66: else if (*sshpid == 0) {
67: if ((dup2(c_in, STDIN_FILENO) == -1) ||
68: (dup2(c_out, STDOUT_FILENO) == -1)) {
69: fprintf(stderr, "dup2: %s\n", strerror(errno));
70: exit(1);
71: }
72: close(*in);
73: close(*out);
74: close(c_in);
75: close(c_out);
1.23 ! djm 76: execv(path, args);
! 77: fprintf(stderr, "exec: %s: %s\n", path, strerror(errno));
1.1 djm 78: exit(1);
79: }
80:
81: close(c_in);
82: close(c_out);
83: }
84:
1.18 itojun 85: static void
1.1 djm 86: usage(void)
87: {
1.19 stevesk 88: fprintf(stderr,
1.20 stevesk 89: "usage: sftp [-1Cv] [-b batchfile] [-F config] [-o option] [-s subsystem|path]\n"
90: " [-S program] [user@]host[:file [file]]\n");
1.1 djm 91: exit(1);
92: }
93:
1.2 stevesk 94: int
1.1 djm 95: main(int argc, char **argv)
96: {
1.17 mouring 97: int in, out, ch;
1.1 djm 98: pid_t sshpid;
1.14 mouring 99: char *host, *userhost, *cp, *file2;
1.17 mouring 100: int debug_level = 0, sshver = 2;
101: char *file1 = NULL, *sftp_server = NULL;
1.23 ! djm 102: char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL;
1.17 mouring 103: LogLevel ll = SYSLOG_LEVEL_INFO;
104: arglist args;
1.3 djm 105: extern int optind;
106: extern char *optarg;
1.1 djm 107:
1.17 mouring 108: args.list = NULL;
1.22 deraadt 109: addargs(&args, "ssh"); /* overwritten with ssh_program */
1.17 mouring 110: addargs(&args, "-oFallBackToRsh no");
111: addargs(&args, "-oForwardX11 no");
112: addargs(&args, "-oForwardAgent no");
1.21 stevesk 113: addargs(&args, "-oClearAllForwardings yes");
1.17 mouring 114: ll = SYSLOG_LEVEL_INFO;
1.10 deraadt 115: infile = stdin; /* Read from STDIN unless changed by -b */
1.3 djm 116:
1.23 ! djm 117: while ((ch = getopt(argc, argv, "1hvCo:s:S:b:F:P:")) != -1) {
1.3 djm 118: switch (ch) {
119: case 'C':
1.17 mouring 120: addargs(&args, "-C");
1.3 djm 121: break;
122: case 'v':
1.17 mouring 123: if (debug_level < 3) {
124: addargs(&args, "-v");
125: ll = SYSLOG_LEVEL_DEBUG1 + debug_level;
126: }
127: debug_level++;
1.3 djm 128: break;
1.19 stevesk 129: case 'F':
1.3 djm 130: case 'o':
1.19 stevesk 131: addargs(&args, "-%c%s", ch, optarg);
1.7 markus 132: break;
133: case '1':
1.17 mouring 134: sshver = 1;
1.7 markus 135: if (sftp_server == NULL)
136: sftp_server = _PATH_SFTP_SERVER;
137: break;
138: case 's':
139: sftp_server = optarg;
140: break;
141: case 'S':
142: ssh_program = optarg;
1.3 djm 143: break;
1.10 deraadt 144: case 'b':
145: if (infile == stdin) {
146: infile = fopen(optarg, "r");
1.12 markus 147: if (infile == NULL)
1.10 deraadt 148: fatal("%s (%s).", strerror(errno), optarg);
1.12 markus 149: } else
1.10 deraadt 150: fatal("Filename already specified.");
151: break;
1.23 ! djm 152: case 'P':
! 153: sftp_direct = optarg;
! 154: break;
1.3 djm 155: case 'h':
156: default:
1.1 djm 157: usage();
158: }
159: }
160:
1.23 ! djm 161: if (sftp_direct == NULL) {
! 162: if (optind == argc || argc > (optind + 2))
! 163: usage();
! 164:
! 165: userhost = xstrdup(argv[optind]);
! 166: file2 = argv[optind+1];
1.1 djm 167:
1.23 ! djm 168: if ((cp = colon(userhost)) != NULL) {
! 169: *cp++ = '\0';
! 170: file1 = cp;
! 171: }
1.14 mouring 172:
1.23 ! djm 173: if ((host = strchr(userhost, '@')) == NULL)
! 174: host = userhost;
! 175: else {
! 176: *host++ = '\0';
! 177: if (!userhost[0]) {
! 178: fprintf(stderr, "Missing username\n");
! 179: usage();
! 180: }
! 181: addargs(&args, "-l%s",userhost);
! 182: }
1.3 djm 183:
1.23 ! djm 184: host = cleanhostname(host);
! 185: if (!*host) {
! 186: fprintf(stderr, "Missing hostname\n");
1.1 djm 187: usage();
188: }
189:
1.23 ! djm 190: log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
! 191: addargs(&args, "-oProtocol %d", sshver);
! 192:
! 193: /* no subsystem if the server-spec contains a '/' */
! 194: if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
! 195: addargs(&args, "-s");
! 196:
! 197: addargs(&args, "%s", host);
! 198: addargs(&args, "%s", (sftp_server != NULL ?
! 199: sftp_server : "sftp"));
! 200: args.list[0] = ssh_program;
! 201:
! 202: fprintf(stderr, "Connecting to %s...\n", host);
! 203: connect_to_server(ssh_program, args.list, &in, &out,
! 204: &sshpid);
! 205: } else {
! 206: args.list = NULL;
! 207: addargs(&args, "sftp-server");
! 208:
! 209: fprintf(stderr, "Attaching to %s...\n", sftp_direct);
! 210: connect_to_server(sftp_direct, args.list, &in, &out,
! 211: &sshpid);
1.1 djm 212: }
213:
1.14 mouring 214: interactive_loop(in, out, file1, file2);
1.1 djm 215:
216: close(in);
217: close(out);
1.10 deraadt 218: if (infile != stdin)
219: fclose(infile);
1.1 djm 220:
1.4 djm 221: if (waitpid(sshpid, NULL, 0) == -1)
222: fatal("Couldn't wait for ssh process: %s", strerror(errno));
1.1 djm 223:
224: exit(0);
225: }
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