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Welcome a trimmed version of OpenSSH-4.1p1 in the tree.
[dragonfly.git] / crypto / openssh-4 / sftp.c
blob16a6cf0c62f345204898f0d2aac786989dee051e
1 /*
2 * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include "includes.h"
18
19 RCSID("$OpenBSD: sftp.c,v 1.63 2005/03/10 22:01:05 deraadt Exp $");
20
21 #ifdef USE_LIBEDIT
22 #include <histedit.h>
23 #else
24 typedef void EditLine;
25 #endif
26
27 #include "buffer.h"
28 #include "xmalloc.h"
29 #include "log.h"
30 #include "pathnames.h"
31 #include "misc.h"
32
33 #include "sftp.h"
34 #include "sftp-common.h"
35 #include "sftp-client.h"
36
37 /* File to read commands from */
38 FILE* infile;
39
40 /* Are we in batchfile mode? */
41 int batchmode = 0;
42
43 /* Size of buffer used when copying files */
44 size_t copy_buffer_len = 32768;
45
46 /* Number of concurrent outstanding requests */
47 size_t num_requests = 16;
48
49 /* PID of ssh transport process */
50 static pid_t sshpid = -1;
51
52 /* This is set to 0 if the progressmeter is not desired. */
53 int showprogress = 1;
54
55 /* SIGINT received during command processing */
56 volatile sig_atomic_t interrupted = 0;
57
58 /* I wish qsort() took a separate ctx for the comparison function...*/
59 int sort_flag;
60
61 int remote_glob(struct sftp_conn *, const char *, int,
62 int (*)(const char *, int), glob_t *); /* proto for sftp-glob.c */
63
64 extern char *__progname;
65
66 /* Separators for interactive commands */
67 #define WHITESPACE " \t\r\n"
68
69 /* ls flags */
70 #define LS_LONG_VIEW 0x01 /* Full view ala ls -l */
71 #define LS_SHORT_VIEW 0x02 /* Single row view ala ls -1 */
72 #define LS_NUMERIC_VIEW 0x04 /* Long view with numeric uid/gid */
73 #define LS_NAME_SORT 0x08 /* Sort by name (default) */
74 #define LS_TIME_SORT 0x10 /* Sort by mtime */
75 #define LS_SIZE_SORT 0x20 /* Sort by file size */
76 #define LS_REVERSE_SORT 0x40 /* Reverse sort order */
77 #define LS_SHOW_ALL 0x80 /* Don't skip filenames starting with '.' */
78
79 #define VIEW_FLAGS (LS_LONG_VIEW|LS_SHORT_VIEW|LS_NUMERIC_VIEW)
80 #define SORT_FLAGS (LS_NAME_SORT|LS_TIME_SORT|LS_SIZE_SORT)
81
82 /* Commands for interactive mode */
83 #define I_CHDIR 1
84 #define I_CHGRP 2
85 #define I_CHMOD 3
86 #define I_CHOWN 4
87 #define I_GET 5
88 #define I_HELP 6
89 #define I_LCHDIR 7
90 #define I_LLS 8
91 #define I_LMKDIR 9
92 #define I_LPWD 10
93 #define I_LS 11
94 #define I_LUMASK 12
95 #define I_MKDIR 13
96 #define I_PUT 14
97 #define I_PWD 15
98 #define I_QUIT 16
99 #define I_RENAME 17
100 #define I_RM 18
101 #define I_RMDIR 19
102 #define I_SHELL 20
103 #define I_SYMLINK 21
104 #define I_VERSION 22
105 #define I_PROGRESS 23
106
107 struct CMD {
108 const char *c;
109 const int n;
110 };
111
112 static const struct CMD cmds[] = {
113 { "bye", I_QUIT },
114 { "cd", I_CHDIR },
115 { "chdir", I_CHDIR },
116 { "chgrp", I_CHGRP },
117 { "chmod", I_CHMOD },
118 { "chown", I_CHOWN },
119 { "dir", I_LS },
120 { "exit", I_QUIT },
121 { "get", I_GET },
122 { "mget", I_GET },
123 { "help", I_HELP },
124 { "lcd", I_LCHDIR },
125 { "lchdir", I_LCHDIR },
126 { "lls", I_LLS },
127 { "lmkdir", I_LMKDIR },
128 { "ln", I_SYMLINK },
129 { "lpwd", I_LPWD },
130 { "ls", I_LS },
131 { "lumask", I_LUMASK },
132 { "mkdir", I_MKDIR },
133 { "progress", I_PROGRESS },
134 { "put", I_PUT },
135 { "mput", I_PUT },
136 { "pwd", I_PWD },
137 { "quit", I_QUIT },
138 { "rename", I_RENAME },
139 { "rm", I_RM },
140 { "rmdir", I_RMDIR },
141 { "symlink", I_SYMLINK },
142 { "version", I_VERSION },
143 { "!", I_SHELL },
144 { "?", I_HELP },
145 { NULL, -1}
146 };
147
148 int interactive_loop(int fd_in, int fd_out, char *file1, char *file2);
149
150 static void
151 killchild(int signo)
152 {
153 if (sshpid > 1) {
154 kill(sshpid, SIGTERM);
155 waitpid(sshpid, NULL, 0);
156 }
157
158 _exit(1);
159 }
160
161 static void
162 cmd_interrupt(int signo)
163 {
164 const char msg[] = "\rInterrupt \n";
165 int olderrno = errno;
166
167 write(STDERR_FILENO, msg, sizeof(msg) - 1);
168 interrupted = 1;
169 errno = olderrno;
170 }
171
172 static void
173 help(void)
174 {
175 printf("Available commands:\n");
176 printf("cd path Change remote directory to 'path'\n");
177 printf("lcd path Change local directory to 'path'\n");
178 printf("chgrp grp path Change group of file 'path' to 'grp'\n");
179 printf("chmod mode path Change permissions of file 'path' to 'mode'\n");
180 printf("chown own path Change owner of file 'path' to 'own'\n");
181 printf("help Display this help text\n");
182 printf("get remote-path [local-path] Download file\n");
183 printf("lls [ls-options [path]] Display local directory listing\n");
184 printf("ln oldpath newpath Symlink remote file\n");
185 printf("lmkdir path Create local directory\n");
186 printf("lpwd Print local working directory\n");
187 printf("ls [path] Display remote directory listing\n");
188 printf("lumask umask Set local umask to 'umask'\n");
189 printf("mkdir path Create remote directory\n");
190 printf("progress Toggle display of progress meter\n");
191 printf("put local-path [remote-path] Upload file\n");
192 printf("pwd Display remote working directory\n");
193 printf("exit Quit sftp\n");
194 printf("quit Quit sftp\n");
195 printf("rename oldpath newpath Rename remote file\n");
196 printf("rmdir path Remove remote directory\n");
197 printf("rm path Delete remote file\n");
198 printf("symlink oldpath newpath Symlink remote file\n");
199 printf("version Show SFTP version\n");
200 printf("!command Execute 'command' in local shell\n");
201 printf("! Escape to local shell\n");
202 printf("? Synonym for help\n");
203 }
204
205 static void
206 local_do_shell(const char *args)
207 {
208 int status;
209 char *shell;
210 pid_t pid;
211
212 if (!*args)
213 args = NULL;
214
215 if ((shell = getenv("SHELL")) == NULL)
216 shell = _PATH_BSHELL;
217
218 if ((pid = fork()) == -1)
219 fatal("Couldn't fork: %s", strerror(errno));
220
221 if (pid == 0) {
222 /* XXX: child has pipe fds to ssh subproc open - issue? */
223 if (args) {
224 debug3("Executing %s -c \"%s\"", shell, args);
225 execl(shell, shell, "-c", args, (char *)NULL);
226 } else {
227 debug3("Executing %s", shell);
228 execl(shell, shell, (char *)NULL);
229 }
230 fprintf(stderr, "Couldn't execute \"%s\": %s\n", shell,
231 strerror(errno));
232 _exit(1);
233 }
234 while (waitpid(pid, &status, 0) == -1)
235 if (errno != EINTR)
236 fatal("Couldn't wait for child: %s", strerror(errno));
237 if (!WIFEXITED(status))
238 error("Shell exited abormally");
239 else if (WEXITSTATUS(status))
240 error("Shell exited with status %d", WEXITSTATUS(status));
241 }
242
243 static void
244 local_do_ls(const char *args)
245 {
246 if (!args || !*args)
247 local_do_shell(_PATH_LS);
248 else {
249 int len = strlen(_PATH_LS " ") + strlen(args) + 1;
250 char *buf = xmalloc(len);
251
252 /* XXX: quoting - rip quoting code from ftp? */
253 snprintf(buf, len, _PATH_LS " %s", args);
254 local_do_shell(buf);
255 xfree(buf);
256 }
257 }
258
259 /* Strip one path (usually the pwd) from the start of another */
260 static char *
261 path_strip(char *path, char *strip)
262 {
263 size_t len;
264
265 if (strip == NULL)
266 return (xstrdup(path));
267
268 len = strlen(strip);
269 if (strncmp(path, strip, len) == 0) {
270 if (strip[len - 1] != '/' && path[len] == '/')
271 len++;
272 return (xstrdup(path + len));
273 }
274
275 return (xstrdup(path));
276 }
277
278 static char *
279 path_append(char *p1, char *p2)
280 {
281 char *ret;
282 int len = strlen(p1) + strlen(p2) + 2;
283
284 ret = xmalloc(len);
285 strlcpy(ret, p1, len);
286 if (p1[strlen(p1) - 1] != '/')
287 strlcat(ret, "/", len);
288 strlcat(ret, p2, len);
289
290 return(ret);
291 }
292
293 static char *
294 make_absolute(char *p, char *pwd)
295 {
296 char *abs_str;
297
298 /* Derelativise */
299 if (p && p[0] != '/') {
300 abs_str = path_append(pwd, p);
301 xfree(p);
302 return(abs_str);
303 } else
304 return(p);
305 }
306
307 static int
308 infer_path(const char *p, char **ifp)
309 {
310 char *cp;
311
312 cp = strrchr(p, '/');
313 if (cp == NULL) {
314 *ifp = xstrdup(p);
315 return(0);
316 }
317
318 if (!cp[1]) {
319 error("Invalid path");
320 return(-1);
321 }
322
323 *ifp = xstrdup(cp + 1);
324 return(0);
325 }
326
327 static int
328 parse_getput_flags(const char **cpp, int *pflag)
329 {
330 const char *cp = *cpp;
331
332 /* Check for flags */
333 if (cp[0] == '-' && cp[1] && strchr(WHITESPACE, cp[2])) {
334 switch (cp[1]) {
335 case 'p':
336 case 'P':
337 *pflag = 1;
338 break;
339 default:
340 error("Invalid flag -%c", cp[1]);
341 return(-1);
342 }
343 cp += 2;
344 *cpp = cp + strspn(cp, WHITESPACE);
345 }
346
347 return(0);
348 }
349
350 static int
351 parse_ls_flags(const char **cpp, int *lflag)
352 {
353 const char *cp = *cpp;
354
355 /* Defaults */
356 *lflag = LS_NAME_SORT;
357
358 /* Check for flags */
359 if (cp++[0] == '-') {
360 for (; strchr(WHITESPACE, *cp) == NULL; cp++) {
361 switch (*cp) {
362 case 'l':
363 *lflag &= ~VIEW_FLAGS;
364 *lflag |= LS_LONG_VIEW;
365 break;
366 case '1':
367 *lflag &= ~VIEW_FLAGS;
368 *lflag |= LS_SHORT_VIEW;
369 break;
370 case 'n':
371 *lflag &= ~VIEW_FLAGS;
372 *lflag |= LS_NUMERIC_VIEW|LS_LONG_VIEW;
373 break;
374 case 'S':
375 *lflag &= ~SORT_FLAGS;
376 *lflag |= LS_SIZE_SORT;
377 break;
378 case 't':
379 *lflag &= ~SORT_FLAGS;
380 *lflag |= LS_TIME_SORT;
381 break;
382 case 'r':
383 *lflag |= LS_REVERSE_SORT;
384 break;
385 case 'f':
386 *lflag &= ~SORT_FLAGS;
387 break;
388 case 'a':
389 *lflag |= LS_SHOW_ALL;
390 break;
391 default:
392 error("Invalid flag -%c", *cp);
393 return(-1);
394 }
395 }
396 *cpp = cp + strspn(cp, WHITESPACE);
397 }
398
399 return(0);
400 }
401
402 static int
403 get_pathname(const char **cpp, char **path)
404 {
405 const char *cp = *cpp, *end;
406 char quot;
407 int i, j;
408
409 cp += strspn(cp, WHITESPACE);
410 if (!*cp) {
411 *cpp = cp;
412 *path = NULL;
413 return (0);
414 }
415
416 *path = xmalloc(strlen(cp) + 1);
417
418 /* Check for quoted filenames */
419 if (*cp == '\"' || *cp == '\'') {
420 quot = *cp++;
421
422 /* Search for terminating quote, unescape some chars */
423 for (i = j = 0; i <= strlen(cp); i++) {
424 if (cp[i] == quot) { /* Found quote */
425 i++;
426 (*path)[j] = '\0';
427 break;
428 }
429 if (cp[i] == '\0') { /* End of string */
430 error("Unterminated quote");
431 goto fail;
432 }
433 if (cp[i] == '\\') { /* Escaped characters */
434 i++;
435 if (cp[i] != '\'' && cp[i] != '\"' &&
436 cp[i] != '\\') {
437 error("Bad escaped character '\\%c'",
438 cp[i]);
439 goto fail;
440 }
441 }
442 (*path)[j++] = cp[i];
443 }
444
445 if (j == 0) {
446 error("Empty quotes");
447 goto fail;
448 }
449 *cpp = cp + i + strspn(cp + i, WHITESPACE);
450 } else {
451 /* Read to end of filename */
452 end = strpbrk(cp, WHITESPACE);
453 if (end == NULL)
454 end = strchr(cp, '\0');
455 *cpp = end + strspn(end, WHITESPACE);
456
457 memcpy(*path, cp, end - cp);
458 (*path)[end - cp] = '\0';
459 }
460 return (0);
461
462 fail:
463 xfree(*path);
464 *path = NULL;
465 return (-1);
466 }
467
468 static int
469 is_dir(char *path)
470 {
471 struct stat sb;
472
473 /* XXX: report errors? */
474 if (stat(path, &sb) == -1)
475 return(0);
476
477 return(sb.st_mode & S_IFDIR);
478 }
479
480 static int
481 is_reg(char *path)
482 {
483 struct stat sb;
484
485 if (stat(path, &sb) == -1)
486 fatal("stat %s: %s", path, strerror(errno));
487
488 return(S_ISREG(sb.st_mode));
489 }
490
491 static int
492 remote_is_dir(struct sftp_conn *conn, char *path)
493 {
494 Attrib *a;
495
496 /* XXX: report errors? */
497 if ((a = do_stat(conn, path, 1)) == NULL)
498 return(0);
499 if (!(a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS))
500 return(0);
501 return(a->perm & S_IFDIR);
502 }
503
504 static int
505 process_get(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag)
506 {
507 char *abs_src = NULL;
508 char *abs_dst = NULL;
509 char *tmp;
510 glob_t g;
511 int err = 0;
512 int i;
513
514 abs_src = xstrdup(src);
515 abs_src = make_absolute(abs_src, pwd);
516
517 memset(&g, 0, sizeof(g));
518 debug3("Looking up %s", abs_src);
519 if (remote_glob(conn, abs_src, 0, NULL, &g)) {
520 error("File \"%s\" not found.", abs_src);
521 err = -1;
522 goto out;
523 }
524
525 /* If multiple matches, dst must be a directory or unspecified */
526 if (g.gl_matchc > 1 && dst && !is_dir(dst)) {
527 error("Multiple files match, but \"%s\" is not a directory",
528 dst);
529 err = -1;
530 goto out;
531 }
532
533 for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
534 if (infer_path(g.gl_pathv[i], &tmp)) {
535 err = -1;
536 goto out;
537 }
538
539 if (g.gl_matchc == 1 && dst) {
540 /* If directory specified, append filename */
541 if (is_dir(dst)) {
542 if (infer_path(g.gl_pathv[0], &tmp)) {
543 err = 1;
544 goto out;
545 }
546 abs_dst = path_append(dst, tmp);
547 xfree(tmp);
548 } else
549 abs_dst = xstrdup(dst);
550 } else if (dst) {
551 abs_dst = path_append(dst, tmp);
552 xfree(tmp);
553 } else
554 abs_dst = tmp;
555
556 printf("Fetching %s to %s\n", g.gl_pathv[i], abs_dst);
557 if (do_download(conn, g.gl_pathv[i], abs_dst, pflag) == -1)
558 err = -1;
559 xfree(abs_dst);
560 abs_dst = NULL;
561 }
562
563 out:
564 xfree(abs_src);
565 if (abs_dst)
566 xfree(abs_dst);
567 globfree(&g);
568 return(err);
569 }
570
571 static int
572 process_put(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag)
573 {
574 char *tmp_dst = NULL;
575 char *abs_dst = NULL;
576 char *tmp;
577 glob_t g;
578 int err = 0;
579 int i;
580
581 if (dst) {
582 tmp_dst = xstrdup(dst);
583 tmp_dst = make_absolute(tmp_dst, pwd);
584 }
585
586 memset(&g, 0, sizeof(g));
587 debug3("Looking up %s", src);
588 if (glob(src, 0, NULL, &g)) {
589 error("File \"%s\" not found.", src);
590 err = -1;
591 goto out;
592 }
593
594 /* If multiple matches, dst may be directory or unspecified */
595 if (g.gl_matchc > 1 && tmp_dst && !remote_is_dir(conn, tmp_dst)) {
596 error("Multiple files match, but \"%s\" is not a directory",
597 tmp_dst);
598 err = -1;
599 goto out;
600 }
601
602 for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
603 if (!is_reg(g.gl_pathv[i])) {
604 error("skipping non-regular file %s",
605 g.gl_pathv[i]);
606 continue;
607 }
608 if (infer_path(g.gl_pathv[i], &tmp)) {
609 err = -1;
610 goto out;
611 }
612
613 if (g.gl_matchc == 1 && tmp_dst) {
614 /* If directory specified, append filename */
615 if (remote_is_dir(conn, tmp_dst)) {
616 if (infer_path(g.gl_pathv[0], &tmp)) {
617 err = 1;
618 goto out;
619 }
620 abs_dst = path_append(tmp_dst, tmp);
621 xfree(tmp);
622 } else
623 abs_dst = xstrdup(tmp_dst);
624
625 } else if (tmp_dst) {
626 abs_dst = path_append(tmp_dst, tmp);
627 xfree(tmp);
628 } else
629 abs_dst = make_absolute(tmp, pwd);
630
631 printf("Uploading %s to %s\n", g.gl_pathv[i], abs_dst);
632 if (do_upload(conn, g.gl_pathv[i], abs_dst, pflag) == -1)
633 err = -1;
634 }
635
636 out:
637 if (abs_dst)
638 xfree(abs_dst);
639 if (tmp_dst)
640 xfree(tmp_dst);
641 globfree(&g);
642 return(err);
643 }
644
645 static int
646 sdirent_comp(const void *aa, const void *bb)
647 {
648 SFTP_DIRENT *a = *(SFTP_DIRENT **)aa;
649 SFTP_DIRENT *b = *(SFTP_DIRENT **)bb;
650 int rmul = sort_flag & LS_REVERSE_SORT ? -1 : 1;
651
652 #define NCMP(a,b) (a == b ? 0 : (a < b ? 1 : -1))
653 if (sort_flag & LS_NAME_SORT)
654 return (rmul * strcmp(a->filename, b->filename));
655 else if (sort_flag & LS_TIME_SORT)
656 return (rmul * NCMP(a->a.mtime, b->a.mtime));
657 else if (sort_flag & LS_SIZE_SORT)
658 return (rmul * NCMP(a->a.size, b->a.size));
659
660 fatal("Unknown ls sort type");
661 }
662
663 /* sftp ls.1 replacement for directories */
664 static int
665 do_ls_dir(struct sftp_conn *conn, char *path, char *strip_path, int lflag)
666 {
667 int n, c = 1, colspace = 0, columns = 1;
668 SFTP_DIRENT **d;
669
670 if ((n = do_readdir(conn, path, &d)) != 0)
671 return (n);
672
673 if (!(lflag & LS_SHORT_VIEW)) {
674 int m = 0, width = 80;
675 struct winsize ws;
676 char *tmp;
677
678 /* Count entries for sort and find longest filename */
679 for (n = 0; d[n] != NULL; n++) {
680 if (d[n]->filename[0] != '.' || (lflag & LS_SHOW_ALL))
681 m = MAX(m, strlen(d[n]->filename));
682 }
683
684 /* Add any subpath that also needs to be counted */
685 tmp = path_strip(path, strip_path);
686 m += strlen(tmp);
687 xfree(tmp);
688
689 if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) != -1)
690 width = ws.ws_col;
691
692 columns = width / (m + 2);
693 columns = MAX(columns, 1);
694 colspace = width / columns;
695 colspace = MIN(colspace, width);
696 }
697
698 if (lflag & SORT_FLAGS) {
699 sort_flag = lflag & (SORT_FLAGS|LS_REVERSE_SORT);
700 qsort(d, n, sizeof(*d), sdirent_comp);
701 }
702
703 for (n = 0; d[n] != NULL && !interrupted; n++) {
704 char *tmp, *fname;
705
706 if (d[n]->filename[0] == '.' && !(lflag & LS_SHOW_ALL))
707 continue;
708
709 tmp = path_append(path, d[n]->filename);
710 fname = path_strip(tmp, strip_path);
711 xfree(tmp);
712
713 if (lflag & LS_LONG_VIEW) {
714 if (lflag & LS_NUMERIC_VIEW) {
715 char *lname;
716 struct stat sb;
717
718 memset(&sb, 0, sizeof(sb));
719 attrib_to_stat(&d[n]->a, &sb);
720 lname = ls_file(fname, &sb, 1);
721 printf("%s\n", lname);
722 xfree(lname);
723 } else
724 printf("%s\n", d[n]->longname);
725 } else {
726 printf("%-*s", colspace, fname);
727 if (c >= columns) {
728 printf("\n");
729 c = 1;
730 } else
731 c++;
732 }
733
734 xfree(fname);
735 }
736
737 if (!(lflag & LS_LONG_VIEW) && (c != 1))
738 printf("\n");
739
740 free_sftp_dirents(d);
741 return (0);
742 }
743
744 /* sftp ls.1 replacement which handles path globs */
745 static int
746 do_globbed_ls(struct sftp_conn *conn, char *path, char *strip_path,
747 int lflag)
748 {
749 glob_t g;
750 int i, c = 1, colspace = 0, columns = 1;
751 Attrib *a = NULL;
752
753 memset(&g, 0, sizeof(g));
754
755 if (remote_glob(conn, path, GLOB_MARK|GLOB_NOCHECK|GLOB_BRACE,
756 NULL, &g) || (g.gl_pathc && !g.gl_matchc)) {
757 if (g.gl_pathc)
758 globfree(&g);
759 error("Can't ls: \"%s\" not found", path);
760 return (-1);
761 }
762
763 if (interrupted)
764 goto out;
765
766 /*
767 * If the glob returns a single match and it is a directory,
768 * then just list its contents.
769 */
770 if (g.gl_matchc == 1) {
771 if ((a = do_lstat(conn, g.gl_pathv[0], 1)) == NULL) {
772 globfree(&g);
773 return (-1);
774 }
775 if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
776 S_ISDIR(a->perm)) {
777 int err;
778
779 err = do_ls_dir(conn, g.gl_pathv[0], strip_path, lflag);
780 globfree(&g);
781 return (err);
782 }
783 }
784
785 if (!(lflag & LS_SHORT_VIEW)) {
786 int m = 0, width = 80;
787 struct winsize ws;
788
789 /* Count entries for sort and find longest filename */
790 for (i = 0; g.gl_pathv[i]; i++)
791 m = MAX(m, strlen(g.gl_pathv[i]));
792
793 if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) != -1)
794 width = ws.ws_col;
795
796 columns = width / (m + 2);
797 columns = MAX(columns, 1);
798 colspace = width / columns;
799 }
800
801 for (i = 0; g.gl_pathv[i] && !interrupted; i++, a = NULL) {
802 char *fname;
803
804 fname = path_strip(g.gl_pathv[i], strip_path);
805
806 if (lflag & LS_LONG_VIEW) {
807 char *lname;
808 struct stat sb;
809
810 /*
811 * XXX: this is slow - 1 roundtrip per path
812 * A solution to this is to fork glob() and
813 * build a sftp specific version which keeps the
814 * attribs (which currently get thrown away)
815 * that the server returns as well as the filenames.
816 */
817 memset(&sb, 0, sizeof(sb));
818 if (a == NULL)
819 a = do_lstat(conn, g.gl_pathv[i], 1);
820 if (a != NULL)
821 attrib_to_stat(a, &sb);
822 lname = ls_file(fname, &sb, 1);
823 printf("%s\n", lname);
824 xfree(lname);
825 } else {
826 printf("%-*s", colspace, fname);
827 if (c >= columns) {
828 printf("\n");
829 c = 1;
830 } else
831 c++;
832 }
833 xfree(fname);
834 }
835
836 if (!(lflag & LS_LONG_VIEW) && (c != 1))
837 printf("\n");
838
839 out:
840 if (g.gl_pathc)
841 globfree(&g);
842
843 return (0);
844 }
845
846 static int
847 parse_args(const char **cpp, int *pflag, int *lflag, int *iflag,
848 unsigned long *n_arg, char **path1, char **path2)
849 {
850 const char *cmd, *cp = *cpp;
851 char *cp2;
852 int base = 0;
853 long l;
854 int i, cmdnum;
855
856 /* Skip leading whitespace */
857 cp = cp + strspn(cp, WHITESPACE);
858
859 /* Ignore blank lines and lines which begin with comment '#' char */
860 if (*cp == '\0' || *cp == '#')
861 return (0);
862
863 /* Check for leading '-' (disable error processing) */
864 *iflag = 0;
865 if (*cp == '-') {
866 *iflag = 1;
867 cp++;
868 }
869
870 /* Figure out which command we have */
871 for (i = 0; cmds[i].c; i++) {
872 int cmdlen = strlen(cmds[i].c);
873
874 /* Check for command followed by whitespace */
875 if (!strncasecmp(cp, cmds[i].c, cmdlen) &&
876 strchr(WHITESPACE, cp[cmdlen])) {
877 cp += cmdlen;
878 cp = cp + strspn(cp, WHITESPACE);
879 break;
880 }
881 }
882 cmdnum = cmds[i].n;
883 cmd = cmds[i].c;
884
885 /* Special case */
886 if (*cp == '!') {
887 cp++;
888 cmdnum = I_SHELL;
889 } else if (cmdnum == -1) {
890 error("Invalid command.");
891 return (-1);
892 }
893
894 /* Get arguments and parse flags */
895 *lflag = *pflag = *n_arg = 0;
896 *path1 = *path2 = NULL;
897 switch (cmdnum) {
898 case I_GET:
899 case I_PUT:
900 if (parse_getput_flags(&cp, pflag))
901 return(-1);
902 /* Get first pathname (mandatory) */
903 if (get_pathname(&cp, path1))
904 return(-1);
905 if (*path1 == NULL) {
906 error("You must specify at least one path after a "
907 "%s command.", cmd);
908 return(-1);
909 }
910 /* Try to get second pathname (optional) */
911 if (get_pathname(&cp, path2))
912 return(-1);
913 break;
914 case I_RENAME:
915 case I_SYMLINK:
916 if (get_pathname(&cp, path1))
917 return(-1);
918 if (get_pathname(&cp, path2))
919 return(-1);
920 if (!*path1 || !*path2) {
921 error("You must specify two paths after a %s "
922 "command.", cmd);
923 return(-1);
924 }
925 break;
926 case I_RM:
927 case I_MKDIR:
928 case I_RMDIR:
929 case I_CHDIR:
930 case I_LCHDIR:
931 case I_LMKDIR:
932 /* Get pathname (mandatory) */
933 if (get_pathname(&cp, path1))
934 return(-1);
935 if (*path1 == NULL) {
936 error("You must specify a path after a %s command.",
937 cmd);
938 return(-1);
939 }
940 break;
941 case I_LS:
942 if (parse_ls_flags(&cp, lflag))
943 return(-1);
944 /* Path is optional */
945 if (get_pathname(&cp, path1))
946 return(-1);
947 break;
948 case I_LLS:
949 case I_SHELL:
950 /* Uses the rest of the line */
951 break;
952 case I_LUMASK:
953 base = 8;
954 case I_CHMOD:
955 base = 8;
956 case I_CHOWN:
957 case I_CHGRP:
958 /* Get numeric arg (mandatory) */
959 l = strtol(cp, &cp2, base);
960 if (cp2 == cp || ((l == LONG_MIN || l == LONG_MAX) &&
961 errno == ERANGE) || l < 0) {
962 error("You must supply a numeric argument "
963 "to the %s command.", cmd);
964 return(-1);
965 }
966 cp = cp2;
967 *n_arg = l;
968 if (cmdnum == I_LUMASK && strchr(WHITESPACE, *cp))
969 break;
970 if (cmdnum == I_LUMASK || !strchr(WHITESPACE, *cp)) {
971 error("You must supply a numeric argument "
972 "to the %s command.", cmd);
973 return(-1);
974 }
975 cp += strspn(cp, WHITESPACE);
976
977 /* Get pathname (mandatory) */
978 if (get_pathname(&cp, path1))
979 return(-1);
980 if (*path1 == NULL) {
981 error("You must specify a path after a %s command.",
982 cmd);
983 return(-1);
984 }
985 break;
986 case I_QUIT:
987 case I_PWD:
988 case I_LPWD:
989 case I_HELP:
990 case I_VERSION:
991 case I_PROGRESS:
992 break;
993 default:
994 fatal("Command not implemented");
995 }
996
997 *cpp = cp;
998 return(cmdnum);
999 }
1000
1001 static int
1002 parse_dispatch_command(struct sftp_conn *conn, const char *cmd, char **pwd,
1003 int err_abort)
1004 {
1005 char *path1, *path2, *tmp;
1006 int pflag, lflag, iflag, cmdnum, i;
1007 unsigned long n_arg;
1008 Attrib a, *aa;
1009 char path_buf[MAXPATHLEN];
1010 int err = 0;
1011 glob_t g;
1012
1013 path1 = path2 = NULL;
1014 cmdnum = parse_args(&cmd, &pflag, &lflag, &iflag, &n_arg,
1015 &path1, &path2);
1016
1017 if (iflag != 0)
1018 err_abort = 0;
1019
1020 memset(&g, 0, sizeof(g));
1021
1022 /* Perform command */
1023 switch (cmdnum) {
1024 case 0:
1025 /* Blank line */
1026 break;
1027 case -1:
1028 /* Unrecognized command */
1029 err = -1;
1030 break;
1031 case I_GET:
1032 err = process_get(conn, path1, path2, *pwd, pflag);
1033 break;
1034 case I_PUT:
1035 err = process_put(conn, path1, path2, *pwd, pflag);
1036 break;
1037 case I_RENAME:
1038 path1 = make_absolute(path1, *pwd);
1039 path2 = make_absolute(path2, *pwd);
1040 err = do_rename(conn, path1, path2);
1041 break;
1042 case I_SYMLINK:
1043 path2 = make_absolute(path2, *pwd);
1044 err = do_symlink(conn, path1, path2);
1045 break;
1046 case I_RM:
1047 path1 = make_absolute(path1, *pwd);
1048 remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
1049 for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1050 printf("Removing %s\n", g.gl_pathv[i]);
1051 err = do_rm(conn, g.gl_pathv[i]);
1052 if (err != 0 && err_abort)
1053 break;
1054 }
1055 break;
1056 case I_MKDIR:
1057 path1 = make_absolute(path1, *pwd);
1058 attrib_clear(&a);
1059 a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
1060 a.perm = 0777;
1061 err = do_mkdir(conn, path1, &a);
1062 break;
1063 case I_RMDIR:
1064 path1 = make_absolute(path1, *pwd);
1065 err = do_rmdir(conn, path1);
1066 break;
1067 case I_CHDIR:
1068 path1 = make_absolute(path1, *pwd);
1069 if ((tmp = do_realpath(conn, path1)) == NULL) {
1070 err = 1;
1071 break;
1072 }
1073 if ((aa = do_stat(conn, tmp, 0)) == NULL) {
1074 xfree(tmp);
1075 err = 1;
1076 break;
1077 }
1078 if (!(aa->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)) {
1079 error("Can't change directory: Can't check target");
1080 xfree(tmp);
1081 err = 1;
1082 break;
1083 }
1084 if (!S_ISDIR(aa->perm)) {
1085 error("Can't change directory: \"%s\" is not "
1086 "a directory", tmp);
1087 xfree(tmp);
1088 err = 1;
1089 break;
1090 }
1091 xfree(*pwd);
1092 *pwd = tmp;
1093 break;
1094 case I_LS:
1095 if (!path1) {
1096 do_globbed_ls(conn, *pwd, *pwd, lflag);
1097 break;
1098 }
1099
1100 /* Strip pwd off beginning of non-absolute paths */
1101 tmp = NULL;
1102 if (*path1 != '/')
1103 tmp = *pwd;
1104
1105 path1 = make_absolute(path1, *pwd);
1106 err = do_globbed_ls(conn, path1, tmp, lflag);
1107 break;
1108 case I_LCHDIR:
1109 if (chdir(path1) == -1) {
1110 error("Couldn't change local directory to "
1111 "\"%s\": %s", path1, strerror(errno));
1112 err = 1;
1113 }
1114 break;
1115 case I_LMKDIR:
1116 if (mkdir(path1, 0777) == -1) {
1117 error("Couldn't create local directory "
1118 "\"%s\": %s", path1, strerror(errno));
1119 err = 1;
1120 }
1121 break;
1122 case I_LLS:
1123 local_do_ls(cmd);
1124 break;
1125 case I_SHELL:
1126 local_do_shell(cmd);
1127 break;
1128 case I_LUMASK:
1129 umask(n_arg);
1130 printf("Local umask: %03lo\n", n_arg);
1131 break;
1132 case I_CHMOD:
1133 path1 = make_absolute(path1, *pwd);
1134 attrib_clear(&a);
1135 a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
1136 a.perm = n_arg;
1137 remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
1138 for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1139 printf("Changing mode on %s\n", g.gl_pathv[i]);
1140 err = do_setstat(conn, g.gl_pathv[i], &a);
1141 if (err != 0 && err_abort)
1142 break;
1143 }
1144 break;
1145 case I_CHOWN:
1146 case I_CHGRP:
1147 path1 = make_absolute(path1, *pwd);
1148 remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g);
1149 for (i = 0; g.gl_pathv[i] && !interrupted; i++) {
1150 if (!(aa = do_stat(conn, g.gl_pathv[i], 0))) {
1151 if (err != 0 && err_abort)
1152 break;
1153 else
1154 continue;
1155 }
1156 if (!(aa->flags & SSH2_FILEXFER_ATTR_UIDGID)) {
1157 error("Can't get current ownership of "
1158 "remote file \"%s\"", g.gl_pathv[i]);
1159 if (err != 0 && err_abort)
1160 break;
1161 else
1162 continue;
1163 }
1164 aa->flags &= SSH2_FILEXFER_ATTR_UIDGID;
1165 if (cmdnum == I_CHOWN) {
1166 printf("Changing owner on %s\n", g.gl_pathv[i]);
1167 aa->uid = n_arg;
1168 } else {
1169 printf("Changing group on %s\n", g.gl_pathv[i]);
1170 aa->gid = n_arg;
1171 }
1172 err = do_setstat(conn, g.gl_pathv[i], aa);
1173 if (err != 0 && err_abort)
1174 break;
1175 }
1176 break;
1177 case I_PWD:
1178 printf("Remote working directory: %s\n", *pwd);
1179 break;
1180 case I_LPWD:
1181 if (!getcwd(path_buf, sizeof(path_buf))) {
1182 error("Couldn't get local cwd: %s", strerror(errno));
1183 err = -1;
1184 break;
1185 }
1186 printf("Local working directory: %s\n", path_buf);
1187 break;
1188 case I_QUIT:
1189 /* Processed below */
1190 break;
1191 case I_HELP:
1192 help();
1193 break;
1194 case I_VERSION:
1195 printf("SFTP protocol version %u\n", sftp_proto_version(conn));
1196 break;
1197 case I_PROGRESS:
1198 showprogress = !showprogress;
1199 if (showprogress)
1200 printf("Progress meter enabled\n");
1201 else
1202 printf("Progress meter disabled\n");
1203 break;
1204 default:
1205 fatal("%d is not implemented", cmdnum);
1206 }
1207
1208 if (g.gl_pathc)
1209 globfree(&g);
1210 if (path1)
1211 xfree(path1);
1212 if (path2)
1213 xfree(path2);
1214
1215 /* If an unignored error occurs in batch mode we should abort. */
1216 if (err_abort && err != 0)
1217 return (-1);
1218 else if (cmdnum == I_QUIT)
1219 return (1);
1220
1221 return (0);
1222 }
1223
1224 #ifdef USE_LIBEDIT
1225 static char *
1226 prompt(EditLine *el)
1227 {
1228 return ("sftp> ");
1229 }
1230 #endif
1231
1232 int
1233 interactive_loop(int fd_in, int fd_out, char *file1, char *file2)
1234 {
1235 char *pwd;
1236 char *dir = NULL;
1237 char cmd[2048];
1238 struct sftp_conn *conn;
1239 int err;
1240 EditLine *el = NULL;
1241 #ifdef USE_LIBEDIT
1242 History *hl = NULL;
1243 HistEvent hev;
1244 extern char *__progname;
1245
1246 if (!batchmode && isatty(STDIN_FILENO)) {
1247 if ((el = el_init(__progname, stdin, stdout, stderr)) == NULL)
1248 fatal("Couldn't initialise editline");
1249 if ((hl = history_init()) == NULL)
1250 fatal("Couldn't initialise editline history");
1251 history(hl, &hev, H_SETSIZE, 100);
1252 el_set(el, EL_HIST, history, hl);
1253
1254 el_set(el, EL_PROMPT, prompt);
1255 el_set(el, EL_EDITOR, "emacs");
1256 el_set(el, EL_TERMINAL, NULL);
1257 el_set(el, EL_SIGNAL, 1);
1258 el_source(el, NULL);
1259 }
1260 #endif /* USE_LIBEDIT */
1261
1262 conn = do_init(fd_in, fd_out, copy_buffer_len, num_requests);
1263 if (conn == NULL)
1264 fatal("Couldn't initialise connection to server");
1265
1266 pwd = do_realpath(conn, ".");
1267 if (pwd == NULL)
1268 fatal("Need cwd");
1269
1270 if (file1 != NULL) {
1271 dir = xstrdup(file1);
1272 dir = make_absolute(dir, pwd);
1273
1274 if (remote_is_dir(conn, dir) && file2 == NULL) {
1275 printf("Changing to: %s\n", dir);
1276 snprintf(cmd, sizeof cmd, "cd \"%s\"", dir);
1277 if (parse_dispatch_command(conn, cmd, &pwd, 1) != 0) {
1278 xfree(dir);
1279 xfree(pwd);
1280 return (-1);
1281 }
1282 } else {
1283 if (file2 == NULL)
1284 snprintf(cmd, sizeof cmd, "get %s", dir);
1285 else
1286 snprintf(cmd, sizeof cmd, "get %s %s", dir,
1287 file2);
1288
1289 err = parse_dispatch_command(conn, cmd, &pwd, 1);
1290 xfree(dir);
1291 xfree(pwd);
1292 return (err);
1293 }
1294 xfree(dir);
1295 }
1296
1297 #if HAVE_SETVBUF
1298 setvbuf(stdout, NULL, _IOLBF, 0);
1299 setvbuf(infile, NULL, _IOLBF, 0);
1300 #else
1301 setlinebuf(stdout);
1302 setlinebuf(infile);
1303 #endif
1304
1305 err = 0;
1306 for (;;) {
1307 char *cp;
1308
1309 signal(SIGINT, SIG_IGN);
1310
1311 if (el == NULL) {
1312 printf("sftp> ");
1313 if (fgets(cmd, sizeof(cmd), infile) == NULL) {
1314 printf("\n");
1315 break;
1316 }
1317 if (batchmode) /* Echo command */
1318 printf("%s", cmd);
1319 } else {
1320 #ifdef USE_LIBEDIT
1321 const char *line;
1322 int count = 0;
1323
1324 if ((line = el_gets(el, &count)) == NULL || count <= 0)
1325 break;
1326 history(hl, &hev, H_ENTER, line);
1327 if (strlcpy(cmd, line, sizeof(cmd)) >= sizeof(cmd)) {
1328 fprintf(stderr, "Error: input line too long\n");
1329 continue;
1330 }
1331 #endif /* USE_LIBEDIT */
1332 }
1333
1334 cp = strrchr(cmd, '\n');
1335 if (cp)
1336 *cp = '\0';
1337
1338 /* Handle user interrupts gracefully during commands */
1339 interrupted = 0;
1340 signal(SIGINT, cmd_interrupt);
1341
1342 err = parse_dispatch_command(conn, cmd, &pwd, batchmode);
1343 if (err != 0)
1344 break;
1345 }
1346 xfree(pwd);
1347
1348 /* err == 1 signifies normal "quit" exit */
1349 return (err >= 0 ? 0 : -1);
1350 }
1351
1352 static void
1353 connect_to_server(char *path, char **args, int *in, int *out)
1354 {
1355 int c_in, c_out;
1356
1357 #ifdef USE_PIPES
1358 int pin[2], pout[2];
1359
1360 if ((pipe(pin) == -1) || (pipe(pout) == -1))
1361 fatal("pipe: %s", strerror(errno));
1362 *in = pin[0];
1363 *out = pout[1];
1364 c_in = pout[0];
1365 c_out = pin[1];
1366 #else /* USE_PIPES */
1367 int inout[2];
1368
1369 if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1)
1370 fatal("socketpair: %s", strerror(errno));
1371 *in = *out = inout[0];
1372 c_in = c_out = inout[1];
1373 #endif /* USE_PIPES */
1374
1375 if ((sshpid = fork()) == -1)
1376 fatal("fork: %s", strerror(errno));
1377 else if (sshpid == 0) {
1378 if ((dup2(c_in, STDIN_FILENO) == -1) ||
1379 (dup2(c_out, STDOUT_FILENO) == -1)) {
1380 fprintf(stderr, "dup2: %s\n", strerror(errno));
1381 _exit(1);
1382 }
1383 close(*in);
1384 close(*out);
1385 close(c_in);
1386 close(c_out);
1387
1388 /*
1389 * The underlying ssh is in the same process group, so we must
1390 * ignore SIGINT if we want to gracefully abort commands,
1391 * otherwise the signal will make it to the ssh process and
1392 * kill it too
1393 */
1394 signal(SIGINT, SIG_IGN);
1395 execvp(path, args);
1396 fprintf(stderr, "exec: %s: %s\n", path, strerror(errno));
1397 _exit(1);
1398 }
1399
1400 signal(SIGTERM, killchild);
1401 signal(SIGINT, killchild);
1402 signal(SIGHUP, killchild);
1403 close(c_in);
1404 close(c_out);
1405 }
1406
1407 static void
1408 usage(void)
1409 {
1410 extern char *__progname;
1411
1412 fprintf(stderr,
1413 "usage: %s [-1Cv] [-B buffer_size] [-b batchfile] [-F ssh_config]\n"
1414 " [-o ssh_option] [-P sftp_server_path] [-R num_requests]\n"
1415 " [-S program] [-s subsystem | sftp_server] host\n"
1416 " %s [[user@]host[:file [file]]]\n"
1417 " %s [[user@]host[:dir[/]]]\n"
1418 " %s -b batchfile [user@]host\n", __progname, __progname, __progname, __progname);
1419 exit(1);
1420 }
1421
1422 int
1423 main(int argc, char **argv)
1424 {
1425 int in, out, ch, err;
1426 char *host, *userhost, *cp, *file2 = NULL;
1427 int debug_level = 0, sshver = 2;
1428 char *file1 = NULL, *sftp_server = NULL;
1429 char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL;
1430 LogLevel ll = SYSLOG_LEVEL_INFO;
1431 arglist args;
1432 extern int optind;
1433 extern char *optarg;
1434
1435 __progname = ssh_get_progname(argv[0]);
1436 args.list = NULL;
1437 addargs(&args, "ssh"); /* overwritten with ssh_program */
1438 addargs(&args, "-oForwardX11 no");
1439 addargs(&args, "-oForwardAgent no");
1440 addargs(&args, "-oClearAllForwardings yes");
1441
1442 ll = SYSLOG_LEVEL_INFO;
1443 infile = stdin;
1444
1445 while ((ch = getopt(argc, argv, "1hvCo:s:S:b:B:F:P:R:")) != -1) {
1446 switch (ch) {
1447 case 'C':
1448 addargs(&args, "-C");
1449 break;
1450 case 'v':
1451 if (debug_level < 3) {
1452 addargs(&args, "-v");
1453 ll = SYSLOG_LEVEL_DEBUG1 + debug_level;
1454 }
1455 debug_level++;
1456 break;
1457 case 'F':
1458 case 'o':
1459 addargs(&args, "-%c%s", ch, optarg);
1460 break;
1461 case '1':
1462 sshver = 1;
1463 if (sftp_server == NULL)
1464 sftp_server = _PATH_SFTP_SERVER;
1465 break;
1466 case 's':
1467 sftp_server = optarg;
1468 break;
1469 case 'S':
1470 ssh_program = optarg;
1471 break;
1472 case 'b':
1473 if (batchmode)
1474 fatal("Batch file already specified.");
1475
1476 /* Allow "-" as stdin */
1477 if (strcmp(optarg, "-") != 0 &&
1478 (infile = fopen(optarg, "r")) == NULL)
1479 fatal("%s (%s).", strerror(errno), optarg);
1480 showprogress = 0;
1481 batchmode = 1;
1482 addargs(&args, "-obatchmode yes");
1483 break;
1484 case 'P':
1485 sftp_direct = optarg;
1486 break;
1487 case 'B':
1488 copy_buffer_len = strtol(optarg, &cp, 10);
1489 if (copy_buffer_len == 0 || *cp != '\0')
1490 fatal("Invalid buffer size \"%s\"", optarg);
1491 break;
1492 case 'R':
1493 num_requests = strtol(optarg, &cp, 10);
1494 if (num_requests == 0 || *cp != '\0')
1495 fatal("Invalid number of requests \"%s\"",
1496 optarg);
1497 break;
1498 case 'h':
1499 default:
1500 usage();
1501 }
1502 }
1503
1504 if (!isatty(STDERR_FILENO))
1505 showprogress = 0;
1506
1507 log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
1508
1509 if (sftp_direct == NULL) {
1510 if (optind == argc || argc > (optind + 2))
1511 usage();
1512
1513 userhost = xstrdup(argv[optind]);
1514 file2 = argv[optind+1];
1515
1516 if ((host = strrchr(userhost, '@')) == NULL)
1517 host = userhost;
1518 else {
1519 *host++ = '\0';
1520 if (!userhost[0]) {
1521 fprintf(stderr, "Missing username\n");
1522 usage();
1523 }
1524 addargs(&args, "-l%s",userhost);
1525 }
1526
1527 if ((cp = colon(host)) != NULL) {
1528 *cp++ = '\0';
1529 file1 = cp;
1530 }
1531
1532 host = cleanhostname(host);
1533 if (!*host) {
1534 fprintf(stderr, "Missing hostname\n");
1535 usage();
1536 }
1537
1538 addargs(&args, "-oProtocol %d", sshver);
1539
1540 /* no subsystem if the server-spec contains a '/' */
1541 if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
1542 addargs(&args, "-s");
1543
1544 addargs(&args, "%s", host);
1545 addargs(&args, "%s", (sftp_server != NULL ?
1546 sftp_server : "sftp"));
1547 args.list[0] = ssh_program;
1548
1549 if (!batchmode)
1550 fprintf(stderr, "Connecting to %s...\n", host);
1551 connect_to_server(ssh_program, args.list, &in, &out);
1552 } else {
1553 args.list = NULL;
1554 addargs(&args, "sftp-server");
1555
1556 if (!batchmode)
1557 fprintf(stderr, "Attaching to %s...\n", sftp_direct);
1558 connect_to_server(sftp_direct, args.list, &in, &out);
1559 }
1560
1561 err = interactive_loop(in, out, file1, file2);
1562
1563 #if !defined(USE_PIPES)
1564 shutdown(in, SHUT_RDWR);
1565 shutdown(out, SHUT_RDWR);
1566 #endif
1567
1568 close(in);
1569 close(out);
1570 if (batchmode)
1571 fclose(infile);
1572
1573 while (waitpid(sshpid, NULL, 0) == -1)
1574 if (errno != EINTR)
1575 fatal("Couldn't wait for ssh process: %s",
1576 strerror(errno));
1577
1578 exit(err == 0 ? 0 : 1);
1579 }
DragonFly BSD