Annotation of src/usr.bin/ssh/sftp.c, Revision 1.15.2.1
1.1 djm 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:
1.15.2.1! jason 27: RCSID("$OpenBSD: sftp.c,v 1.21 2001/09/19 19:24:19 stevesk Exp $");
1.1 djm 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"
1.15.2.1! jason 36: #include "misc.h"
1.1 djm 37:
38: #include "sftp.h"
39: #include "sftp-common.h"
40: #include "sftp-client.h"
41: #include "sftp-int.h"
42:
1.7 markus 43: char *ssh_program = _PATH_SSH_PROGRAM;
1.10 deraadt 44: FILE* infile;
1.7 markus 45:
1.15.2.1! jason 46: static void
1.1 djm 47: connect_to_server(char **args, int *in, int *out, pid_t *sshpid)
48: {
49: int c_in, c_out;
50: #ifdef USE_PIPES
51: int pin[2], pout[2];
52: if ((pipe(pin) == -1) || (pipe(pout) == -1))
53: fatal("pipe: %s", strerror(errno));
54: *in = pin[0];
55: *out = pout[1];
56: c_in = pout[0];
57: c_out = pin[1];
58: #else /* USE_PIPES */
59: int inout[2];
60: if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1)
61: fatal("socketpair: %s", strerror(errno));
62: *in = *out = inout[0];
63: c_in = c_out = inout[1];
64: #endif /* USE_PIPES */
65:
66: if ((*sshpid = fork()) == -1)
67: fatal("fork: %s", strerror(errno));
68: else if (*sshpid == 0) {
69: if ((dup2(c_in, STDIN_FILENO) == -1) ||
70: (dup2(c_out, STDOUT_FILENO) == -1)) {
71: fprintf(stderr, "dup2: %s\n", strerror(errno));
72: exit(1);
73: }
74: close(*in);
75: close(*out);
76: close(c_in);
77: close(c_out);
1.7 markus 78: execv(ssh_program, args);
79: fprintf(stderr, "exec: %s: %s\n", ssh_program, strerror(errno));
1.1 djm 80: exit(1);
81: }
82:
83: close(c_in);
84: close(c_out);
85: }
86:
1.15.2.1! jason 87: static void
1.1 djm 88: usage(void)
89: {
1.15.2.1! jason 90: fprintf(stderr,
! 91: "usage: sftp [-1Cv] [-b batchfile] [-F config] [-o option] [-s subsystem|path]\n"
! 92: " [-S program] [user@]host[:file [file]]\n");
1.1 djm 93: exit(1);
94: }
95:
1.2 stevesk 96: int
1.1 djm 97: main(int argc, char **argv)
98: {
1.15.2.1! jason 99: int in, out, ch;
1.1 djm 100: pid_t sshpid;
1.14 mouring 101: char *host, *userhost, *cp, *file2;
1.15.2.1! jason 102: int debug_level = 0, sshver = 2;
! 103: char *file1 = NULL, *sftp_server = NULL;
! 104: LogLevel ll = SYSLOG_LEVEL_INFO;
! 105: arglist args;
1.3 djm 106: extern int optind;
107: extern char *optarg;
1.1 djm 108:
1.15.2.1! jason 109: args.list = NULL;
! 110: addargs(&args, "ssh"); /* overwritten with ssh_program */
! 111: addargs(&args, "-oFallBackToRsh no");
! 112: addargs(&args, "-oForwardX11 no");
! 113: addargs(&args, "-oForwardAgent no");
! 114: addargs(&args, "-oClearAllForwardings yes");
! 115: ll = SYSLOG_LEVEL_INFO;
1.10 deraadt 116: infile = stdin; /* Read from STDIN unless changed by -b */
1.3 djm 117:
1.15.2.1! jason 118: while ((ch = getopt(argc, argv, "1hvCo:s:S:b:F:")) != -1) {
1.3 djm 119: switch (ch) {
120: case 'C':
1.15.2.1! jason 121: addargs(&args, "-C");
1.3 djm 122: break;
123: case 'v':
1.15.2.1! jason 124: if (debug_level < 3) {
! 125: addargs(&args, "-v");
! 126: ll = SYSLOG_LEVEL_DEBUG1 + debug_level;
! 127: }
! 128: debug_level++;
1.3 djm 129: break;
1.15.2.1! jason 130: case 'F':
1.3 djm 131: case 'o':
1.15.2.1! jason 132: addargs(&args, "-%c%s", ch, optarg);
1.7 markus 133: break;
134: case '1':
1.15.2.1! jason 135: sshver = 1;
1.7 markus 136: if (sftp_server == NULL)
137: sftp_server = _PATH_SFTP_SERVER;
138: break;
139: case 's':
140: sftp_server = optarg;
141: break;
142: case 'S':
143: ssh_program = optarg;
1.3 djm 144: break;
1.10 deraadt 145: case 'b':
146: if (infile == stdin) {
147: infile = fopen(optarg, "r");
1.12 markus 148: if (infile == NULL)
1.10 deraadt 149: fatal("%s (%s).", strerror(errno), optarg);
1.12 markus 150: } else
1.10 deraadt 151: fatal("Filename already specified.");
152: break;
1.3 djm 153: case 'h':
154: default:
1.1 djm 155: usage();
156: }
157: }
158:
1.14 mouring 159: if (optind == argc || argc > (optind + 2))
1.1 djm 160: usage();
161:
1.13 deraadt 162: userhost = xstrdup(argv[optind]);
1.14 mouring 163: file2 = argv[optind+1];
164:
1.15 mouring 165: if ((cp = colon(userhost)) != NULL) {
1.14 mouring 166: *cp++ = '\0';
167: file1 = cp;
168: }
1.3 djm 169:
170: if ((host = strchr(userhost, '@')) == NULL)
171: host = userhost;
1.1 djm 172: else {
1.14 mouring 173: *host++ = '\0';
1.3 djm 174: if (!userhost[0]) {
1.1 djm 175: fprintf(stderr, "Missing username\n");
176: usage();
177: }
1.15.2.1! jason 178: addargs(&args, "-l%s",userhost);
1.1 djm 179: }
180:
1.15 mouring 181: host = cleanhostname(host);
1.3 djm 182: if (!*host) {
1.1 djm 183: fprintf(stderr, "Missing hostname\n");
184: usage();
185: }
186:
187: log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
1.15.2.1! jason 188: addargs(&args, "-oProtocol %d", sshver);
! 189:
! 190: /* no subsystem if the server-spec contains a '/' */
! 191: if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
! 192: addargs(&args, "-s");
1.1 djm 193:
1.15.2.1! jason 194: addargs(&args, "%s", host);
! 195: addargs(&args, "%s", (sftp_server != NULL ? sftp_server : "sftp"));
! 196: args.list[0] = ssh_program;
1.1 djm 197:
1.3 djm 198: fprintf(stderr, "Connecting to %s...\n", host);
1.1 djm 199:
1.15.2.1! jason 200: connect_to_server(args.list, &in, &out, &sshpid);
1.1 djm 201:
1.14 mouring 202: interactive_loop(in, out, file1, file2);
1.1 djm 203:
204: close(in);
205: close(out);
1.10 deraadt 206: if (infile != stdin)
207: fclose(infile);
1.1 djm 208:
1.4 djm 209: if (waitpid(sshpid, NULL, 0) == -1)
210: fatal("Couldn't wait for ssh process: %s", strerror(errno));
1.1 djm 211:
212: exit(0);
213: }
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