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- (djm) [openbsd-compat/regress/snprintftest.c]
[openssh-git.git] / sftp.c
blobcf3dea048122cc7d6cfa51e9c6530728ac808809
1 /* $OpenBSD: sftp.c,v 1.91 2006/08/03 03:34:42 deraadt Exp $ */
2 /*
3 * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include "includes.h"
19
20 #include <sys/types.h>
21 #include <sys/ioctl.h>
22 #ifdef HAVE_SYS_STAT_H
23 # include <sys/stat.h>
24 #endif
25 #include <sys/param.h>
26 #include <sys/socket.h>
27 #include <sys/wait.h>
28
29 #include <errno.h>
30
31 #ifdef HAVE_PATHS_H
32 # include <paths.h>
33 #endif
34 #ifdef USE_LIBEDIT
35 #include <histedit.h>
36 #else
37 typedef void EditLine;
38 #endif
39 #include <signal.h>
40 #include <stdlib.h>
41 #include <stdio.h>
42 #include <string.h>
43 #include <unistd.h>
44 #include <stdarg.h>
45
46 #include "xmalloc.h"
47 #include "log.h"
48 #include "pathnames.h"
49 #include "misc.h"
50
51 #include "sftp.h"
52 #include "buffer.h"
53 #include "sftp-common.h"
54 #include "sftp-client.h"
55
56 /* File to read commands from */
57 FILE* infile;
58
59 /* Are we in batchfile mode? */
60 int batchmode = 0;
61
62 /* Size of buffer used when copying files */
63 size_t copy_buffer_len = 32768;
64
65 /* Number of concurrent outstanding requests */
66 size_t num_requests = 16;
67
68 /* PID of ssh transport process */
69 static pid_t sshpid = -1;
70
71 /* This is set to 0 if the progressmeter is not desired. */
72 int showprogress = 1;
73
74 /* SIGINT received during command processing */
75 volatile sig_atomic_t interrupted = 0;
76
77 /* I wish qsort() took a separate ctx for the comparison function...*/
78 int sort_flag;
79
80 int remote_glob(struct sftp_conn *, const char *, int,
81 int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */
82
83 extern char *__progname;
84
85 /* Separators for interactive commands */
86 #define WHITESPACE " \t\r\n"
87
88 /* ls flags */
89 #define LS_LONG_VIEW 0x01 /* Full view ala ls -l */
90 #define LS_SHORT_VIEW 0x02 /* Single row view ala ls -1 */
91 #define LS_NUMERIC_VIEW 0x04 /* Long view with numeric uid/gid */
92 #define LS_NAME_SORT 0x08 /* Sort by name (default) */
93 #define LS_TIME_SORT 0x10 /* Sort by mtime */
94 #define LS_SIZE_SORT 0x20 /* Sort by file size */
95 #define LS_REVERSE_SORT 0x40 /* Reverse sort order */
96 #define LS_SHOW_ALL 0x80 /* Don't skip filenames starting with '.' */
97
98 #define VIEW_FLAGS (LS_LONG_VIEW|LS_SHORT_VIEW|LS_NUMERIC_VIEW)
99 #define SORT_FLAGS (LS_NAME_SORT|LS_TIME_SORT|LS_SIZE_SORT)
100
101 /* Commands for interactive mode */
102 #define I_CHDIR 1
103 #define I_CHGRP 2
104 #define I_CHMOD 3
105 #define I_CHOWN 4
106 #define I_GET 5
107 #define I_HELP 6
108 #define I_LCHDIR 7
109 #define I_LLS 8
110 #define I_LMKDIR 9
111 #define I_LPWD 10
112 #define I_LS 11
113 #define I_LUMASK 12
114 #define I_MKDIR 13
115 #define I_PUT 14
116 #define I_PWD 15
117 #define I_QUIT 16
118 #define I_RENAME 17
119 #define I_RM 18
120 #define I_RMDIR 19
121 #define I_SHELL 20
122 #define I_SYMLINK 21
123 #define I_VERSION 22
124 #define I_PROGRESS 23
125
126 struct CMD {
127 const char *c;
128 const int n;
129 };
130
131 static const struct CMD cmds[] = {
132 { "bye", I_QUIT },
133 { "cd", I_CHDIR },
134 { "chdir", I_CHDIR },
135 { "chgrp", I_CHGRP },
136 { "chmod", I_CHMOD },
137 { "chown", I_CHOWN },
138 { "dir", I_LS },
139 { "exit", I_QUIT },
140 { "get", I_GET },
141 { "mget", I_GET },
142 { "help", I_HELP },
143 { "lcd", I_LCHDIR },
144 { "lchdir", I_LCHDIR },
145 { "lls", I_LLS },
146 { "lmkdir", I_LMKDIR },
147 { "ln", I_SYMLINK },
148 { "lpwd", I_LPWD },
149 { "ls", I_LS },
150 { "lumask", I_LUMASK },
151 { "mkdir", I_MKDIR },
152 { "progress", I_PROGRESS },
153 { "put", I_PUT },
154 { "mput", I_PUT },
155 { "pwd", I_PWD },
156 { "quit", I_QUIT },
157 { "rename", I_RENAME },
158 { "rm", I_RM },
159 { "rmdir", I_RMDIR },
160 { "symlink", I_SYMLINK },
161 { "version", I_VERSION },
162 { "!", I_SHELL },
163 { "?", I_HELP },
164 { NULL, -1}
165 };
166
167 int interactive_loop(int fd_in, int fd_out, char *file1, char *file2);
168
169 static void
170 killchild(int signo)
171 {
172 if (sshpid > 1) {
173 kill(sshpid, SIGTERM);
174 waitpid(sshpid, NULL, 0);
175 }
176
177 _exit(1);
178 }
179
180 static void
181 cmd_interrupt(int signo)
182 {
183 const char msg[] = "\rInterrupt \n";
184 int olderrno = errno;
185
186 write(STDERR_FILENO, msg, sizeof(msg) - 1);
187 interrupted = 1;
188 errno = olderrno;
189 }
190
191 static void
192 help(void)
193 {
194 printf("Available commands:\n");
195 printf("cd path Change remote directory to 'path'\n");
196 printf("lcd path Change local directory to 'path'\n");
197 printf("chgrp grp path Change group of file 'path' to 'grp'\n");
198 printf("chmod mode path Change permissions of file 'path' to 'mode'\n");
199 printf("chown own path Change owner of file 'path' to 'own'\n");
200 printf("help Display this help text\n");
201 printf("get remote-path [local-path] Download file\n");
202 printf("lls [ls-options [path]] Display local directory listing\n");
203 printf("ln oldpath newpath Symlink remote file\n");
204 printf("lmkdir path Create local directory\n");
205 printf("lpwd Print local working directory\n");
206 printf("ls [path] Display remote directory listing\n");
207 printf("lumask umask Set local umask to 'umask'\n");
208 printf("mkdir path Create remote directory\n");
209 printf("progress Toggle display of progress meter\n");
210 printf("put local-path [remote-path] Upload file\n");
211 printf("pwd Display remote working directory\n");
212 printf("exit Quit sftp\n");
213 printf("quit Quit sftp\n");
214 printf("rename oldpath newpath Rename remote file\n");
215 printf("rmdir path Remove remote directory\n");
216 printf("rm path Delete remote file\n");
217 printf("symlink oldpath newpath Symlink remote file\n");
218 printf("version Show SFTP version\n");
219 printf("!command Execute 'command' in local shell\n");
220 printf("! Escape to local shell\n");
221 printf("? Synonym for help\n");
222 }
223
224 static void
225 local_do_shell(const char *args)
226 {
227 int status;
228 char *shell;
229 pid_t pid;
230
231 if (!*args)
232 args = NULL;
233
234 if ((shell = getenv("SHELL")) == NULL)
235 shell = _PATH_BSHELL;
236
237 if ((pid = fork()) == -1)
238 fatal("Couldn't fork: %s", strerror(errno));
239
240 if (pid == 0) {
241 /* XXX: child has pipe fds to ssh subproc open - issue? */
242 if (args) {
243 debug3("Executing %s -c \"%s\"", shell, args);
244 execl(shell, shell, "-c", args, (char *)NULL);
245 } else {
246 debug3("Executing %s", shell);
247 execl(shell, shell, (char *)NULL);
248 }
249 fprintf(stderr, "Couldn't execute \"%s\": %s\n", shell,
250 strerror(errno));
251 _exit(1);
252 }
253 while (waitpid(pid, &status, 0) == -1)
254 if (errno != EINTR)
255 fatal("Couldn't wait for child: %s", strerror(errno));
256 if (!WIFEXITED(status))
257 error("Shell exited abnormally");
258 else if (WEXITSTATUS(status))
259 error("Shell exited with status %d", WEXITSTATUS(status));
260 }
261
262 static void
263 local_do_ls(const char *args)
264 {
265 if (!args || !*args)
266 local_do_shell(_PATH_LS);
267 else {
268 int len = strlen(_PATH_LS " ") + strlen(args) + 1;
269 char *buf = xmalloc(len);
270
271 /* XXX: quoting - rip quoting code from ftp? */
272 snprintf(buf, len, _PATH_LS " %s", args);
273 local_do_shell(buf);
274 xfree(buf);
275 }
276 }
277
278 /* Strip one path (usually the pwd) from the start of another */
279 static char *
280 path_strip(char *path, char *strip)
281 {
282 size_t len;
283
284 if (strip == NULL)
285 return (xstrdup(path));
286
287 len = strlen(strip);
288 if (strncmp(path, strip, len) == 0) {
289 if (strip[len - 1] != '/' && path[len] == '/')
290 len++;
291 return (xstrdup(path + len));
292 }
293
294 return (xstrdup(path));
295 }
296
297 static char *
298 path_append(char *p1, char *p2)
299 {
300 char *ret;
301 int len = strlen(p1) + strlen(p2) + 2;
302
303 ret = xmalloc(len);
304 strlcpy(ret, p1, len);
305 if (p1[strlen(p1) - 1] != '/')
306 strlcat(ret, "/", len);
307 strlcat(ret, p2, len);
308
309 return(ret);
310 }
311
312 static char *
313 make_absolute(char *p, char *pwd)
314 {
315 char *abs_str;
316
317 /* Derelativise */
318 if (p && p[0] != '/') {
319 abs_str = path_append(pwd, p);
320 xfree(p);
321 return(abs_str);
322 } else
323 return(p);
324 }
325
326 static int
327 infer_path(const char *p, char **ifp)
328 {
329 char *cp;
330
331 cp = strrchr(p, '/');
332 if (cp == NULL) {
333 *ifp = xstrdup(p);
334 return(0);
335 }
336
337 if (!cp[1]) {
338 error("Invalid path");
339 return(-1);
340 }
341
342 *ifp = xstrdup(cp + 1);
343 return(0);
344 }
345
346 static int
347 parse_getput_flags(const char **cpp, int *pflag)
348 {
349 const char *cp = *cpp;
350
351 /* Check for flags */
352 if (cp[0] == '-' && cp[1] && strchr(WHITESPACE, cp[2])) {
353 switch (cp[1]) {
354 case 'p':
355 case 'P':
356 *pflag = 1;
357 break;
358 default:
359 error("Invalid flag -%c", cp[1]);
360 return(-1);
361 }
362 cp += 2;
363 *cpp = cp + strspn(cp, WHITESPACE);
364 }
365
366 return(0);
367 }
368
369 static int
370 parse_ls_flags(const char **cpp, int *lflag)
371 {
372 const char *cp = *cpp;
373
374 /* Defaults */
375 *lflag = LS_NAME_SORT;
376
377 /* Check for flags */
378 if (cp++[0] == '-') {
379 for (; strchr(WHITESPACE, *cp) == NULL; cp++) {
380 switch (*cp) {
381 case 'l':
382 *lflag &= ~VIEW_FLAGS;
383 *lflag |= LS_LONG_VIEW;
384 break;
385 case '1':
386 *lflag &= ~VIEW_FLAGS;
387 *lflag |= LS_SHORT_VIEW;
388 break;
389 case 'n':
390 *lflag &= ~VIEW_FLAGS;
391 *lflag |= LS_NUMERIC_VIEW|LS_LONG_VIEW;
392 break;
393 case 'S':
394 *lflag &= ~SORT_FLAGS;
395 *lflag |= LS_SIZE_SORT;
396 break;
397 case 't':
398 *lflag &= ~SORT_FLAGS;
399 *lflag |= LS_TIME_SORT;
400 break;
401 case 'r':
402 *lflag |= LS_REVERSE_SORT;
403 break;
404 case 'f':
405 *lflag &= ~SORT_FLAGS;
406 break;
407 case 'a':
408 *lflag |= LS_SHOW_ALL;
409 break;
410 default:
411 error("Invalid flag -%c", *cp);
412 return(-1);
413 }
414 }
415 *cpp = cp + strspn(cp, WHITESPACE);
416 }
417
418 return(0);
419 }
420
421 static int
422 get_pathname(const char **cpp, char **path)
423 {
424 const char *cp = *cpp, *end;
425 char quot;
426 u_int i, j;
427
428 cp += strspn(cp, WHITESPACE);
429 if (!*cp) {
430 *cpp = cp;
431 *path = NULL;
432 return (0);
433 }
434
435 *path = xmalloc(strlen(cp) + 1);
436
437 /* Check for quoted filenames */
438 if (*cp == '\"' || *cp == '\'') {
439 quot = *cp++;
440
441 /* Search for terminating quote, unescape some chars */
442 for (i = j = 0; i <= strlen(cp); i++) {
443 if (cp[i] == quot) { /* Found quote */
444 i++;
445 (*path)[j] = '\0';
446 break;
447 }
448 if (cp[i] == '\0') { /* End of string */
449 error("Unterminated quote");
450 goto fail;
451 }
452 if (cp[i] == '\\') { /* Escaped characters */
453 i++;
454 if (cp[i] != '\'' && cp[i] != '\"' &&
455 cp[i] != '\\') {
456 error("Bad escaped character '\\%c'",
457 cp[i]);
458 goto fail;
459 }
460 }
461 (*path)[j++] = cp[i];
462 }
463
464 if (j == 0) {
465 error("Empty quotes");
466 goto fail;
467 }
468 *cpp = cp + i + strspn(cp + i, WHITESPACE);
469 } else {
470 /* Read to end of filename */
471 end = strpbrk(cp, WHITESPACE);
472 if (end == NULL)
473 end = strchr(cp, '\0');
474 *cpp = end + strspn(end, WHITESPACE);
475
476 memcpy(*path, cp, end - cp);
477 (*path)[end - cp] = '\0';
478 }
479 return (0);
480
481 fail:
482 xfree(*path);
483 *path = NULL;
484 return (-1);
485 }
486
487 static int
488 is_dir(char *path)
489 {
490 struct stat sb;
491
492 /* XXX: report errors? */
493 if (stat(path, &sb) == -1)
494 return(0);
495
496 return(sb.st_mode & S_IFDIR);
497 }
498
499 static int
500 is_reg(char *path)
501 {
502 struct stat sb;
503
504 if (stat(path, &sb) == -1)
505 fatal("stat %s: %s", path, strerror(errno));
506
507 return(S_ISREG(sb.st_mode));
508 }
509
510 static int
511 remote_is_dir(struct sftp_conn *conn, char *path)
512 {
513 Attrib *a;
514
515 /* XXX: report errors? */
516 if ((a = do_stat(conn, path, 1)) == NULL)
517 return(0);
518 if (!(a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS))
519 return(0);
520 return(a->perm & S_IFDIR);
521 }
522
523 static int
524 process_get(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag)
525 {
526 char *abs_src = NULL;
527 char *abs_dst = NULL;
528 char *tmp;
529 glob_t g;
530 int err = 0;
531 int i;
532
533 abs_src = xstrdup(src);
534 abs_src = make_absolute(abs_src, pwd);
535
536 memset(&g, 0, sizeof(g));
537 debug3("Looking up %s", abs_src);
538 if (remote_glob(conn, abs_src, 0, NULL, &g)) {
539 error("File \"%s\" not found.", abs_src);
540 err = -1;
541 goto out;
542 }
543
544 /* If multiple matches, dst must be a directory or unspecified */
545 if (g.gl_matchc > 1 && dst && !is_dir(dst)) {
546 error("Multiple files match, but \"%s\" is not a directory",
547 dst);
548 err = -1;
549 goto out;
550 }
551
552 for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
553 if (infer_path(g.gl_pathv[i], &tmp)) {
554 err = -1;
555 goto out;
556 }
557
558 if (g.gl_matchc == 1 && dst) {
559 /* If directory specified, append filename */
560 xfree(tmp);
561 if (is_dir(dst)) {
562 if (infer_path(g.gl_pathv[0], &tmp)) {
563 err = 1;
564 goto out;
565 }
566 abs_dst = path_append(dst, tmp);
567 xfree(tmp);
568 } else
569 abs_dst = xstrdup(dst);
570 } else if (dst) {
571 abs_dst = path_append(dst, tmp);
572 xfree(tmp);
573 } else
574 abs_dst = tmp;
575
576 printf("Fetching %s to %s\n", g.gl_pathv[i], abs_dst);
577 if (do_download(conn, g.gl_pathv[i], abs_dst, pflag) == -1)
578 err = -1;
579 xfree(abs_dst);
580 abs_dst = NULL;
581 }
582
583 out:
584 xfree(abs_src);
585 globfree(&g);
586 return(err);
587 }
588
589 static int
590 process_put(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag)
591 {
592 char *tmp_dst = NULL;
593 char *abs_dst = NULL;
594 char *tmp;
595 glob_t g;
596 int err = 0;
597 int i;
598
599 if (dst) {
600 tmp_dst = xstrdup(dst);
601 tmp_dst = make_absolute(tmp_dst, pwd);
602 }
603
604 memset(&g, 0, sizeof(g));
605 debug3("Looking up %s", src);
606 if (glob(src, 0, NULL, &g)) {
607 error("File \"%s\" not found.", src);
608 err = -1;
609 goto out;
610 }
611
612 /* If multiple matches, dst may be directory or unspecified */
613 if (g.gl_matchc > 1 && tmp_dst && !remote_is_dir(conn, tmp_dst)) {
614 error("Multiple files match, but \"%s\" is not a directory",
615 tmp_dst);
616 err = -1;
617 goto out;
618 }
619
620 for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
621 if (!is_reg(g.gl_pathv[i])) {
622 error("skipping non-regular file %s",
623 g.gl_pathv[i]);
624 continue;
625 }
626 if (infer_path(g.gl_pathv[i], &tmp)) {
627 err = -1;
628 goto out;
629 }
630
631 if (g.gl_matchc == 1 && tmp_dst) {
632 /* If directory specified, append filename */
633 if (remote_is_dir(conn, tmp_dst)) {
634 if (infer_path(g.gl_pathv[0], &tmp)) {
635 err = 1;
636 goto out;
637 }
638 abs_dst = path_append(tmp_dst, tmp);
639 xfree(tmp);
640 } else
641 abs_dst = xstrdup(tmp_dst);
642
643 } else if (tmp_dst) {
644 abs_dst = path_append(tmp_dst, tmp);
645 xfree(tmp);
646 } else
647 abs_dst = make_absolute(tmp, pwd);
648
649 printf("Uploading %s to %s\n", g.gl_pathv[i], abs_dst);
650 if (do_upload(conn, g.gl_pathv[i], abs_dst, pflag) == -1)
651 err = -1;
652 }
653
654 out:
655 if (abs_dst)
656 xfree(abs_dst);
657 if (tmp_dst)
658 xfree(tmp_dst);
659 globfree(&g);
660 return(err);
661 }
662
663 static int
664 sdirent_comp(const void *aa, const void *bb)
665 {
666 SFTP_DIRENT *a = *(SFTP_DIRENT **)aa;
667 SFTP_DIRENT *b = *(SFTP_DIRENT **)bb;
668 int rmul = sort_flag & LS_REVERSE_SORT ? -1 : 1;
669
670 #define NCMP(a,b) (a == b ? 0 : (a < b ? 1 : -1))
671 if (sort_flag & LS_NAME_SORT)
672 return (rmul * strcmp(a->filename, b->filename));
673 else if (sort_flag & LS_TIME_SORT)
674 return (rmul * NCMP(a->a.mtime, b->a.mtime));
675 else if (sort_flag & LS_SIZE_SORT)
676 return (rmul * NCMP(a->a.size, b->a.size));
677
678 fatal("Unknown ls sort type");
679 }
680
681 /* sftp ls.1 replacement for directories */
682 static int
683 do_ls_dir(struct sftp_conn *conn, char *path, char *strip_path, int lflag)
684 {
685 int n;
686 u_int c = 1, colspace = 0, columns = 1;
687 SFTP_DIRENT **d;
688
689 if ((n = do_readdir(conn, path, &d)) != 0)
690 return (n);
691
692 if (!(lflag & LS_SHORT_VIEW)) {
693 u_int m = 0, width = 80;
694 struct winsize ws;
695 char *tmp;
696
697 /* Count entries for sort and find longest filename */
698 for (n = 0; d[n] != NULL; n++) {
699 if (d[n]->filename[0] != '.' || (lflag & LS_SHOW_ALL))
700 m = MAX(m, strlen(d[n]->filename));
701 }
702
703 /* Add any subpath that also needs to be counted */
704 tmp = path_strip(path, strip_path);
705 m += strlen(tmp);
706 xfree(tmp);
707
708 if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) != -1)
709 width = ws.ws_col;
710
711 columns = width / (m + 2);
712 columns = MAX(columns, 1);
713 colspace = width / columns;
714 colspace = MIN(colspace, width);
715 }
716
717 if (lflag & SORT_FLAGS) {
718 for (n = 0; d[n] != NULL; n++)
719 ; /* count entries */
720 sort_flag = lflag & (SORT_FLAGS|LS_REVERSE_SORT);
721 qsort(d, n, sizeof(*d), sdirent_comp);
722 }
723
724 for (n = 0; d[n] != NULL && !interrupted; n++) {
725 char *tmp, *fname;
726
727 if (d[n]->filename[0] == '.' && !(lflag & LS_SHOW_ALL))
728 continue;
729
730 tmp = path_append(path, d[n]->filename);
731 fname = path_strip(tmp, strip_path);
732 xfree(tmp);
733
734 if (lflag & LS_LONG_VIEW) {
735 if (lflag & LS_NUMERIC_VIEW) {
736 char *lname;
737 struct stat sb;
738
739 memset(&sb, 0, sizeof(sb));
740 attrib_to_stat(&d[n]->a, &sb);
741 lname = ls_file(fname, &sb, 1);
742 printf("%s\n", lname);
743 xfree(lname);
744 } else
745 printf("%s\n", d[n]->longname);
746 } else {
747 printf("%-*s", colspace, fname);
748 if (c >= columns) {
749 printf("\n");
750 c = 1;
751 } else
752 c++;
753 }
754
755 xfree(fname);
756 }
757
758 if (!(lflag & LS_LONG_VIEW) && (c != 1))
759 printf("\n");
760
761 free_sftp_dirents(d);
762 return (0);
763 }
764
765 /* sftp ls.1 replacement which handles path globs */
766 static int
767 do_globbed_ls(struct sftp_conn *conn, char *path, char *strip_path,
768 int lflag)
769 {
770 glob_t g;
771 u_int i, c = 1, colspace = 0, columns = 1;
772 Attrib *a = NULL;
773
774 memset(&g, 0, sizeof(g));
775
776 if (remote_glob(conn, path, GLOB_MARK|GLOB_NOCHECK|GLOB_BRACE,
777 NULL, &g) || (g.gl_pathc && !g.gl_matchc)) {
778 if (g.gl_pathc)
779 globfree(&g);
780 error("Can't ls: \"%s\" not found", path);
781 return (-1);
782 }
783
784 if (interrupted)
785 goto out;
786
787 /*
788 * If the glob returns a single match and it is a directory,
789 * then just list its contents.
790 */
791 if (g.gl_matchc == 1) {
792 if ((a = do_lstat(conn, g.gl_pathv[0], 1)) == NULL) {
793 globfree(&g);
794 return (-1);
795 }
796 if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
797 S_ISDIR(a->perm)) {
798 int err;
799
800 err = do_ls_dir(conn, g.gl_pathv[0], strip_path, lflag);
801 globfree(&g);
802 return (err);
803 }
804 }
805
806 if (!(lflag & LS_SHORT_VIEW)) {
807 u_int m = 0, width = 80;
808 struct winsize ws;
809
810 /* Count entries for sort and find longest filename */
811 for (i = 0; g.gl_pathv[i]; i++)
812 m = MAX(m, strlen(g.gl_pathv[i]));
813
814 if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) != -1)
815 width = ws.ws_col;
816
817 columns = width / (m + 2);
818 columns = MAX(columns, 1);
819 colspace = width / columns;
820 }
821
822 for (i = 0; g.gl_pathv[i] && !interrupted; i++, a = NULL) {
823 char *fname;
824
825 fname = path_strip(g.gl_pathv[i], strip_path);
826
827 if (lflag & LS_LONG_VIEW) {
828 char *lname;
829 struct stat sb;
830
831 /*
832 * XXX: this is slow - 1 roundtrip per path
833 * A solution to this is to fork glob() and
834 * build a sftp specific version which keeps the
835 * attribs (which currently get thrown away)
836 * that the server returns as well as the filenames.
837 */
838 memset(&sb, 0, sizeof(sb));
839 if (a == NULL)
840 a = do_lstat(conn, g.gl_pathv[i], 1);
841 if (a != NULL)
842 attrib_to_stat(a, &sb);
843 lname = ls_file(fname, &sb, 1);
844 printf("%s\n", lname);
845 xfree(lname);
846 } else {
847 printf("%-*s", colspace, fname);
848 if (c >= columns) {
849 printf("\n");
850 c = 1;
851 } else
852 c++;
853 }
854 xfree(fname);
855 }
856
857 if (!(lflag & LS_LONG_VIEW) && (c != 1))
858 printf("\n");
859
860 out:
861 if (g.gl_pathc)
862 globfree(&g);
863
864 return (0);
865 }
866
867 static int
868 parse_args(const char **cpp, int *pflag, int *lflag, int *iflag,
869 unsigned long *n_arg, char **path1, char **path2)
870 {
871 const char *cmd, *cp = *cpp;
872 char *cp2;
873 int base = 0;
874 long l;
875 int i, cmdnum;
876
877 /* Skip leading whitespace */
878 cp = cp + strspn(cp, WHITESPACE);
879
880 /* Ignore blank lines and lines which begin with comment '#' char */
881 if (*cp == '\0' || *cp == '#')
882 return (0);
883
884 /* Check for leading '-' (disable error processing) */
885 *iflag = 0;
886 if (*cp == '-') {
887 *iflag = 1;
888 cp++;
889 }
890
891 /* Figure out which command we have */
892 for (i = 0; cmds[i].c; i++) {
893 int cmdlen = strlen(cmds[i].c);
894
895 /* Check for command followed by whitespace */
896 if (!strncasecmp(cp, cmds[i].c, cmdlen) &&
897 strchr(WHITESPACE, cp[cmdlen])) {
898 cp += cmdlen;
899 cp = cp + strspn(cp, WHITESPACE);
900 break;
901 }
902 }
903 cmdnum = cmds[i].n;
904 cmd = cmds[i].c;
905
906 /* Special case */
907 if (*cp == '!') {
908 cp++;
909 cmdnum = I_SHELL;
910 } else if (cmdnum == -1) {
911 error("Invalid command.");
912 return (-1);
913 }
914
915 /* Get arguments and parse flags */
916 *lflag = *pflag = *n_arg = 0;
917 *path1 = *path2 = NULL;
918 switch (cmdnum) {
919 case I_GET:
920 case I_PUT:
921 if (parse_getput_flags(&cp, pflag))
922 return(-1);
923 /* Get first pathname (mandatory) */
924 if (get_pathname(&cp, path1))
925 return(-1);
926 if (*path1 == NULL) {
927 error("You must specify at least one path after a "
928 "%s command.", cmd);
929 return(-1);
930 }
931 /* Try to get second pathname (optional) */
932 if (get_pathname(&cp, path2))
933 return(-1);
934 break;
935 case I_RENAME:
936 case I_SYMLINK:
937 if (get_pathname(&cp, path1))
938 return(-1);
939 if (get_pathname(&cp, path2))
940 return(-1);
941 if (!*path1 || !*path2) {
942 error("You must specify two paths after a %s "
943 "command.", cmd);
944 return(-1);
945 }
946 break;
947 case I_RM:
948 case I_MKDIR:
949 case I_RMDIR:
950 case I_CHDIR:
951 case I_LCHDIR:
952 case I_LMKDIR:
953 /* Get pathname (mandatory) */
954 if (get_pathname(&cp, path1))
955 return(-1);
956 if (*path1 == NULL) {
957 error("You must specify a path after a %s command.",
958 cmd);
959 return(-1);
960 }
961 break;
962 case I_LS:
963 if (parse_ls_flags(&cp, lflag))
964 return(-1);
965 /* Path is optional */
966 if (get_pathname(&cp, path1))
967 return(-1);
968 break;
969 case I_LLS:
970 case I_SHELL:
971 /* Uses the rest of the line */
972 break;
973 case I_LUMASK:
974 base = 8;
975 case I_CHMOD:
976 base = 8;
977 case I_CHOWN:
978 case I_CHGRP:
979 /* Get numeric arg (mandatory) */
980 l = strtol(cp, &cp2, base);
981 if (cp2 == cp || ((l == LONG_MIN || l == LONG_MAX) &&
982 errno == ERANGE) || l < 0) {
983 error("You must supply a numeric argument "
984 "to the %s command.", cmd);
985 return(-1);
986 }
987 cp = cp2;
988 *n_arg = l;
989 if (cmdnum == I_LUMASK && strchr(WHITESPACE, *cp))
990 break;
991 if (cmdnum == I_LUMASK || !strchr(WHITESPACE, *cp)) {
992 error("You must supply a numeric argument "
993 "to the %s command.", cmd);
994 return(-1);
995 }
996 cp += strspn(cp, WHITESPACE);
997
998 /* Get pathname (mandatory) */
999 if (get_pathname(&cp, path1))
1000 return(-1);
1001 if (*path1 == NULL) {
1002 error("You must specify a path after a %s command.",
1003 cmd);
1004 return(-1);
1005 }
1006 break;
1007 case I_QUIT:
1008 case I_PWD:
1009 case I_LPWD:
1010 case I_HELP:
1011 case I_VERSION:
1012 case I_PROGRESS:
1013 break;
1014 default:
1015 fatal("Command not implemented");
1016 }
1017
1018 *cpp = cp;
1019 return(cmdnum);
1020 }
1021
1022 static int
1023 parse_dispatch_command(struct sftp_conn *conn, const char *cmd, char **pwd,
1024 int err_abort)
1025 {
1026 char *path1, *path2, *tmp;
1027 int pflag, lflag, iflag, cmdnum, i;
1028 unsigned long n_arg;
1029 Attrib a, *aa;
1030 char path_buf[MAXPATHLEN];
1031 int err = 0;
1032 glob_t g;
1033
1034 path1 = path2 = NULL;
1035 cmdnum = parse_args(&cmd, &pflag, &lflag, &iflag, &n_arg,
1036 &path1, &path2);
1037
1038 if (iflag != 0)
1039 err_abort = 0;
1040
1041 memset(&g, 0, sizeof(g));
1042
1043 /* Perform command */
1044 switch (cmdnum) {
1045 case 0:
1046 /* Blank line */
1047 break;
1048 case -1:
1049 /* Unrecognized command */
1050 err = -1;
1051 break;
1052 case I_GET:
1053 err = process_get(conn, path1, path2, *pwd, pflag);
1054 break;
1055 case I_PUT:
1056 err = process_put(conn, path1, path2, *pwd, pflag);
1057 break;
1058 case I_RENAME:
1059 path1 = make_absolute(path1, *pwd);
1060 path2 = make_absolute(path2, *pwd);
1061 err = do_rename(conn, path1, path2);
1062 break;
1063 case I_SYMLINK:
1064 path2 = make_absolute(path2, *pwd);
1065 err = do_symlink(conn, path1, path2);
1066 break;
1067 case I_RM:
1068 path1 = make_absolute(path1, *pwd);
1069 remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
1070 for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1071 printf("Removing %s\n", g.gl_pathv[i]);
1072 err = do_rm(conn, g.gl_pathv[i]);
1073 if (err != 0 && err_abort)
1074 break;
1075 }
1076 break;
1077 case I_MKDIR:
1078 path1 = make_absolute(path1, *pwd);
1079 attrib_clear(&a);
1080 a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
1081 a.perm = 0777;
1082 err = do_mkdir(conn, path1, &a);
1083 break;
1084 case I_RMDIR:
1085 path1 = make_absolute(path1, *pwd);
1086 err = do_rmdir(conn, path1);
1087 break;
1088 case I_CHDIR:
1089 path1 = make_absolute(path1, *pwd);
1090 if ((tmp = do_realpath(conn, path1)) == NULL) {
1091 err = 1;
1092 break;
1093 }
1094 if ((aa = do_stat(conn, tmp, 0)) == NULL) {
1095 xfree(tmp);
1096 err = 1;
1097 break;
1098 }
1099 if (!(aa->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)) {
1100 error("Can't change directory: Can't check target");
1101 xfree(tmp);
1102 err = 1;
1103 break;
1104 }
1105 if (!S_ISDIR(aa->perm)) {
1106 error("Can't change directory: \"%s\" is not "
1107 "a directory", tmp);
1108 xfree(tmp);
1109 err = 1;
1110 break;
1111 }
1112 xfree(*pwd);
1113 *pwd = tmp;
1114 break;
1115 case I_LS:
1116 if (!path1) {
1117 do_globbed_ls(conn, *pwd, *pwd, lflag);
1118 break;
1119 }
1120
1121 /* Strip pwd off beginning of non-absolute paths */
1122 tmp = NULL;
1123 if (*path1 != '/')
1124 tmp = *pwd;
1125
1126 path1 = make_absolute(path1, *pwd);
1127 err = do_globbed_ls(conn, path1, tmp, lflag);
1128 break;
1129 case I_LCHDIR:
1130 if (chdir(path1) == -1) {
1131 error("Couldn't change local directory to "
1132 "\"%s\": %s", path1, strerror(errno));
1133 err = 1;
1134 }
1135 break;
1136 case I_LMKDIR:
1137 if (mkdir(path1, 0777) == -1) {
1138 error("Couldn't create local directory "
1139 "\"%s\": %s", path1, strerror(errno));
1140 err = 1;
1141 }
1142 break;
1143 case I_LLS:
1144 local_do_ls(cmd);
1145 break;
1146 case I_SHELL:
1147 local_do_shell(cmd);
1148 break;
1149 case I_LUMASK:
1150 umask(n_arg);
1151 printf("Local umask: %03lo\n", n_arg);
1152 break;
1153 case I_CHMOD:
1154 path1 = make_absolute(path1, *pwd);
1155 attrib_clear(&a);
1156 a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
1157 a.perm = n_arg;
1158 remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
1159 for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1160 printf("Changing mode on %s\n", g.gl_pathv[i]);
1161 err = do_setstat(conn, g.gl_pathv[i], &a);
1162 if (err != 0 && err_abort)
1163 break;
1164 }
1165 break;
1166 case I_CHOWN:
1167 case I_CHGRP:
1168 path1 = make_absolute(path1, *pwd);
1169 remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
1170 for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1171 if (!(aa = do_stat(conn, g.gl_pathv[i], 0))) {
1172 if (err != 0 && err_abort)
1173 break;
1174 else
1175 continue;
1176 }
1177 if (!(aa->flags & SSH2_FILEXFER_ATTR_UIDGID)) {
1178 error("Can't get current ownership of "
1179 "remote file \"%s\"", g.gl_pathv[i]);
1180 if (err != 0 && err_abort)
1181 break;
1182 else
1183 continue;
1184 }
1185 aa->flags &= SSH2_FILEXFER_ATTR_UIDGID;
1186 if (cmdnum == I_CHOWN) {
1187 printf("Changing owner on %s\n", g.gl_pathv[i]);
1188 aa->uid = n_arg;
1189 } else {
1190 printf("Changing group on %s\n", g.gl_pathv[i]);
1191 aa->gid = n_arg;
1192 }
1193 err = do_setstat(conn, g.gl_pathv[i], aa);
1194 if (err != 0 && err_abort)
1195 break;
1196 }
1197 break;
1198 case I_PWD:
1199 printf("Remote working directory: %s\n", *pwd);
1200 break;
1201 case I_LPWD:
1202 if (!getcwd(path_buf, sizeof(path_buf))) {
1203 error("Couldn't get local cwd: %s", strerror(errno));
1204 err = -1;
1205 break;
1206 }
1207 printf("Local working directory: %s\n", path_buf);
1208 break;
1209 case I_QUIT:
1210 /* Processed below */
1211 break;
1212 case I_HELP:
1213 help();
1214 break;
1215 case I_VERSION:
1216 printf("SFTP protocol version %u\n", sftp_proto_version(conn));
1217 break;
1218 case I_PROGRESS:
1219 showprogress = !showprogress;
1220 if (showprogress)
1221 printf("Progress meter enabled\n");
1222 else
1223 printf("Progress meter disabled\n");
1224 break;
1225 default:
1226 fatal("%d is not implemented", cmdnum);
1227 }
1228
1229 if (g.gl_pathc)
1230 globfree(&g);
1231 if (path1)
1232 xfree(path1);
1233 if (path2)
1234 xfree(path2);
1235
1236 /* If an unignored error occurs in batch mode we should abort. */
1237 if (err_abort && err != 0)
1238 return (-1);
1239 else if (cmdnum == I_QUIT)
1240 return (1);
1241
1242 return (0);
1243 }
1244
1245 #ifdef USE_LIBEDIT
1246 static char *
1247 prompt(EditLine *el)
1248 {
1249 return ("sftp> ");
1250 }
1251 #endif
1252
1253 int
1254 interactive_loop(int fd_in, int fd_out, char *file1, char *file2)
1255 {
1256 char *pwd;
1257 char *dir = NULL;
1258 char cmd[2048];
1259 struct sftp_conn *conn;
1260 int err, interactive;
1261 EditLine *el = NULL;
1262 #ifdef USE_LIBEDIT
1263 History *hl = NULL;
1264 HistEvent hev;
1265 extern char *__progname;
1266
1267 if (!batchmode && isatty(STDIN_FILENO)) {
1268 if ((el = el_init(__progname, stdin, stdout, stderr)) == NULL)
1269 fatal("Couldn't initialise editline");
1270 if ((hl = history_init()) == NULL)
1271 fatal("Couldn't initialise editline history");
1272 history(hl, &hev, H_SETSIZE, 100);
1273 el_set(el, EL_HIST, history, hl);
1274
1275 el_set(el, EL_PROMPT, prompt);
1276 el_set(el, EL_EDITOR, "emacs");
1277 el_set(el, EL_TERMINAL, NULL);
1278 el_set(el, EL_SIGNAL, 1);
1279 el_source(el, NULL);
1280 }
1281 #endif /* USE_LIBEDIT */
1282
1283 conn = do_init(fd_in, fd_out, copy_buffer_len, num_requests);
1284 if (conn == NULL)
1285 fatal("Couldn't initialise connection to server");
1286
1287 pwd = do_realpath(conn, ".");
1288 if (pwd == NULL)
1289 fatal("Need cwd");
1290
1291 if (file1 != NULL) {
1292 dir = xstrdup(file1);
1293 dir = make_absolute(dir, pwd);
1294
1295 if (remote_is_dir(conn, dir) && file2 == NULL) {
1296 printf("Changing to: %s\n", dir);
1297 snprintf(cmd, sizeof cmd, "cd \"%s\"", dir);
1298 if (parse_dispatch_command(conn, cmd, &pwd, 1) != 0) {
1299 xfree(dir);
1300 xfree(pwd);
1301 xfree(conn);
1302 return (-1);
1303 }
1304 } else {
1305 if (file2 == NULL)
1306 snprintf(cmd, sizeof cmd, "get %s", dir);
1307 else
1308 snprintf(cmd, sizeof cmd, "get %s %s", dir,
1309 file2);
1310
1311 err = parse_dispatch_command(conn, cmd, &pwd, 1);
1312 xfree(dir);
1313 xfree(pwd);
1314 xfree(conn);
1315 return (err);
1316 }
1317 xfree(dir);
1318 }
1319
1320 #if defined(HAVE_SETVBUF) && !defined(BROKEN_SETVBUF)
1321 setvbuf(stdout, NULL, _IOLBF, 0);
1322 setvbuf(infile, NULL, _IOLBF, 0);
1323 #else
1324 setlinebuf(stdout);
1325 setlinebuf(infile);
1326 #endif
1327
1328 interactive = !batchmode && isatty(STDIN_FILENO);
1329 err = 0;
1330 for (;;) {
1331 char *cp;
1332
1333 signal(SIGINT, SIG_IGN);
1334
1335 if (el == NULL) {
1336 if (interactive)
1337 printf("sftp> ");
1338 if (fgets(cmd, sizeof(cmd), infile) == NULL) {
1339 if (interactive)
1340 printf("\n");
1341 break;
1342 }
1343 if (!interactive) { /* Echo command */
1344 printf("sftp> %s", cmd);
1345 if (strlen(cmd) > 0 &&
1346 cmd[strlen(cmd) - 1] != '\n')
1347 printf("\n");
1348 }
1349 } else {
1350 #ifdef USE_LIBEDIT
1351 const char *line;
1352 int count = 0;
1353
1354 if ((line = el_gets(el, &count)) == NULL || count <= 0) {
1355 printf("\n");
1356 break;
1357 }
1358 history(hl, &hev, H_ENTER, line);
1359 if (strlcpy(cmd, line, sizeof(cmd)) >= sizeof(cmd)) {
1360 fprintf(stderr, "Error: input line too long\n");
1361 continue;
1362 }
1363 #endif /* USE_LIBEDIT */
1364 }
1365
1366 cp = strrchr(cmd, '\n');
1367 if (cp)
1368 *cp = '\0';
1369
1370 /* Handle user interrupts gracefully during commands */
1371 interrupted = 0;
1372 signal(SIGINT, cmd_interrupt);
1373
1374 err = parse_dispatch_command(conn, cmd, &pwd, batchmode);
1375 if (err != 0)
1376 break;
1377 }
1378 xfree(pwd);
1379 xfree(conn);
1380
1381 #ifdef USE_LIBEDIT
1382 if (el != NULL)
1383 el_end(el);
1384 #endif /* USE_LIBEDIT */
1385
1386 /* err == 1 signifies normal "quit" exit */
1387 return (err >= 0 ? 0 : -1);
1388 }
1389
1390 static void
1391 connect_to_server(char *path, char **args, int *in, int *out)
1392 {
1393 int c_in, c_out;
1394
1395 #ifdef USE_PIPES
1396 int pin[2], pout[2];
1397
1398 if ((pipe(pin) == -1) || (pipe(pout) == -1))
1399 fatal("pipe: %s", strerror(errno));
1400 *in = pin[0];
1401 *out = pout[1];
1402 c_in = pout[0];
1403 c_out = pin[1];
1404 #else /* USE_PIPES */
1405 int inout[2];
1406
1407 if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1)
1408 fatal("socketpair: %s", strerror(errno));
1409 *in = *out = inout[0];
1410 c_in = c_out = inout[1];
1411 #endif /* USE_PIPES */
1412
1413 if ((sshpid = fork()) == -1)
1414 fatal("fork: %s", strerror(errno));
1415 else if (sshpid == 0) {
1416 if ((dup2(c_in, STDIN_FILENO) == -1) ||
1417 (dup2(c_out, STDOUT_FILENO) == -1)) {
1418 fprintf(stderr, "dup2: %s\n", strerror(errno));
1419 _exit(1);
1420 }
1421 close(*in);
1422 close(*out);
1423 close(c_in);
1424 close(c_out);
1425
1426 /*
1427 * The underlying ssh is in the same process group, so we must
1428 * ignore SIGINT if we want to gracefully abort commands,
1429 * otherwise the signal will make it to the ssh process and
1430 * kill it too
1431 */
1432 signal(SIGINT, SIG_IGN);
1433 execvp(path, args);
1434 fprintf(stderr, "exec: %s: %s\n", path, strerror(errno));
1435 _exit(1);
1436 }
1437
1438 signal(SIGTERM, killchild);
1439 signal(SIGINT, killchild);
1440 signal(SIGHUP, killchild);
1441 close(c_in);
1442 close(c_out);
1443 }
1444
1445 static void
1446 usage(void)
1447 {
1448 extern char *__progname;
1449
1450 fprintf(stderr,
1451 "usage: %s [-1Cv] [-B buffer_size] [-b batchfile] [-F ssh_config]\n"
1452 " [-o ssh_option] [-P sftp_server_path] [-R num_requests]\n"
1453 " [-S program] [-s subsystem | sftp_server] host\n"
1454 " %s [[user@]host[:file [file]]]\n"
1455 " %s [[user@]host[:dir[/]]]\n"
1456 " %s -b batchfile [user@]host\n", __progname, __progname, __progname, __progname);
1457 exit(1);
1458 }
1459
1460 int
1461 main(int argc, char **argv)
1462 {
1463 int in, out, ch, err;
1464 char *host, *userhost, *cp, *file2 = NULL;
1465 int debug_level = 0, sshver = 2;
1466 char *file1 = NULL, *sftp_server = NULL;
1467 char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL;
1468 LogLevel ll = SYSLOG_LEVEL_INFO;
1469 arglist args;
1470 extern int optind;
1471 extern char *optarg;
1472
1473 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
1474 sanitise_stdfd();
1475
1476 __progname = ssh_get_progname(argv[0]);
1477 memset(&args, '\0', sizeof(args));
1478 args.list = NULL;
1479 addargs(&args, "%s", ssh_program);
1480 addargs(&args, "-oForwardX11 no");
1481 addargs(&args, "-oForwardAgent no");
1482 addargs(&args, "-oPermitLocalCommand no");
1483 addargs(&args, "-oClearAllForwardings yes");
1484
1485 ll = SYSLOG_LEVEL_INFO;
1486 infile = stdin;
1487
1488 while ((ch = getopt(argc, argv, "1hvCo:s:S:b:B:F:P:R:")) != -1) {
1489 switch (ch) {
1490 case 'C':
1491 addargs(&args, "-C");
1492 break;
1493 case 'v':
1494 if (debug_level < 3) {
1495 addargs(&args, "-v");
1496 ll = SYSLOG_LEVEL_DEBUG1 + debug_level;
1497 }
1498 debug_level++;
1499 break;
1500 case 'F':
1501 case 'o':
1502 addargs(&args, "-%c%s", ch, optarg);
1503 break;
1504 case '1':
1505 sshver = 1;
1506 if (sftp_server == NULL)
1507 sftp_server = _PATH_SFTP_SERVER;
1508 break;
1509 case 's':
1510 sftp_server = optarg;
1511 break;
1512 case 'S':
1513 ssh_program = optarg;
1514 replacearg(&args, 0, "%s", ssh_program);
1515 break;
1516 case 'b':
1517 if (batchmode)
1518 fatal("Batch file already specified.");
1519
1520 /* Allow "-" as stdin */
1521 if (strcmp(optarg, "-") != 0 &&
1522 (infile = fopen(optarg, "r")) == NULL)
1523 fatal("%s (%s).", strerror(errno), optarg);
1524 showprogress = 0;
1525 batchmode = 1;
1526 addargs(&args, "-obatchmode yes");
1527 break;
1528 case 'P':
1529 sftp_direct = optarg;
1530 break;
1531 case 'B':
1532 copy_buffer_len = strtol(optarg, &cp, 10);
1533 if (copy_buffer_len == 0 || *cp != '\0')
1534 fatal("Invalid buffer size \"%s\"", optarg);
1535 break;
1536 case 'R':
1537 num_requests = strtol(optarg, &cp, 10);
1538 if (num_requests == 0 || *cp != '\0')
1539 fatal("Invalid number of requests \"%s\"",
1540 optarg);
1541 break;
1542 case 'h':
1543 default:
1544 usage();
1545 }
1546 }
1547
1548 if (!isatty(STDERR_FILENO))
1549 showprogress = 0;
1550
1551 log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
1552
1553 if (sftp_direct == NULL) {
1554 if (optind == argc || argc > (optind + 2))
1555 usage();
1556
1557 userhost = xstrdup(argv[optind]);
1558 file2 = argv[optind+1];
1559
1560 if ((host = strrchr(userhost, '@')) == NULL)
1561 host = userhost;
1562 else {
1563 *host++ = '\0';
1564 if (!userhost[0]) {
1565 fprintf(stderr, "Missing username\n");
1566 usage();
1567 }
1568 addargs(&args, "-l%s",userhost);
1569 }
1570
1571 if ((cp = colon(host)) != NULL) {
1572 *cp++ = '\0';
1573 file1 = cp;
1574 }
1575
1576 host = cleanhostname(host);
1577 if (!*host) {
1578 fprintf(stderr, "Missing hostname\n");
1579 usage();
1580 }
1581
1582 addargs(&args, "-oProtocol %d", sshver);
1583
1584 /* no subsystem if the server-spec contains a '/' */
1585 if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
1586 addargs(&args, "-s");
1587
1588 addargs(&args, "%s", host);
1589 addargs(&args, "%s", (sftp_server != NULL ?
1590 sftp_server : "sftp"));
1591
1592 if (!batchmode)
1593 fprintf(stderr, "Connecting to %s...\n", host);
1594 connect_to_server(ssh_program, args.list, &in, &out);
1595 } else {
1596 args.list = NULL;
1597 addargs(&args, "sftp-server");
1598
1599 if (!batchmode)
1600 fprintf(stderr, "Attaching to %s...\n", sftp_direct);
1601 connect_to_server(sftp_direct, args.list, &in, &out);
1602 }
1603 freeargs(&args);
1604
1605 err = interactive_loop(in, out, file1, file2);
1606
1607 #if !defined(USE_PIPES)
1608 shutdown(in, SHUT_RDWR);
1609 shutdown(out, SHUT_RDWR);
1610 #endif
1611
1612 close(in);
1613 close(out);
1614 if (batchmode)
1615 fclose(infile);
1616
1617 while (waitpid(sshpid, NULL, 0) == -1)
1618 if (errno != EINTR)
1619 fatal("Couldn't wait for ssh process: %s",
1620 strerror(errno));
1621
1622 exit(err == 0 ? 0 : 1);
1623 }
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