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1 | /* | |
2 | * Copyright (c) 2001,2002 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 | /* XXX: recursive operations */ | |
26 | ||
27 | #include "includes.h" | |
28 | RCSID("$OpenBSD: sftp-int.c,v 1.50 2002/11/21 23:03:51 deraadt Exp $"); | |
29 | ||
30 | #include "buffer.h" | |
31 | #include "xmalloc.h" | |
32 | #include "log.h" | |
33 | #include "pathnames.h" | |
34 | ||
35 | #include "sftp.h" | |
36 | #include "sftp-common.h" | |
37 | #include "sftp-glob.h" | |
38 | #include "sftp-client.h" | |
39 | #include "sftp-int.h" | |
40 | ||
41 | /* File to read commands from */ | |
42 | extern FILE *infile; | |
43 | ||
44 | /* Size of buffer used when copying files */ | |
45 | extern size_t copy_buffer_len; | |
46 | ||
47 | /* Number of concurrent outstanding requests */ | |
48 | extern int num_requests; | |
49 | ||
50 | /* Seperators for interactive commands */ | |
51 | #define WHITESPACE " \t\r\n" | |
52 | ||
53 | /* Commands for interactive mode */ | |
54 | #define I_CHDIR 1 | |
55 | #define I_CHGRP 2 | |
56 | #define I_CHMOD 3 | |
57 | #define I_CHOWN 4 | |
58 | #define I_GET 5 | |
59 | #define I_HELP 6 | |
60 | #define I_LCHDIR 7 | |
61 | #define I_LLS 8 | |
62 | #define I_LMKDIR 9 | |
63 | #define I_LPWD 10 | |
64 | #define I_LS 11 | |
65 | #define I_LUMASK 12 | |
66 | #define I_MKDIR 13 | |
67 | #define I_PUT 14 | |
68 | #define I_PWD 15 | |
69 | #define I_QUIT 16 | |
70 | #define I_RENAME 17 | |
71 | #define I_RM 18 | |
72 | #define I_RMDIR 19 | |
73 | #define I_SHELL 20 | |
74 | #define I_SYMLINK 21 | |
75 | #define I_VERSION 22 | |
76 | ||
77 | struct CMD { | |
78 | const char *c; | |
79 | const int n; | |
80 | }; | |
81 | ||
82 | const struct CMD cmds[] = { | |
83 | { "bye", I_QUIT }, | |
84 | { "cd", I_CHDIR }, | |
85 | { "chdir", I_CHDIR }, | |
86 | { "chgrp", I_CHGRP }, | |
87 | { "chmod", I_CHMOD }, | |
88 | { "chown", I_CHOWN }, | |
89 | { "dir", I_LS }, | |
90 | { "exit", I_QUIT }, | |
91 | { "get", I_GET }, | |
92 | { "mget", I_GET }, | |
93 | { "help", I_HELP }, | |
94 | { "lcd", I_LCHDIR }, | |
95 | { "lchdir", I_LCHDIR }, | |
96 | { "lls", I_LLS }, | |
97 | { "lmkdir", I_LMKDIR }, | |
98 | { "ln", I_SYMLINK }, | |
99 | { "lpwd", I_LPWD }, | |
100 | { "ls", I_LS }, | |
101 | { "lumask", I_LUMASK }, | |
102 | { "mkdir", I_MKDIR }, | |
103 | { "put", I_PUT }, | |
104 | { "mput", I_PUT }, | |
105 | { "pwd", I_PWD }, | |
106 | { "quit", I_QUIT }, | |
107 | { "rename", I_RENAME }, | |
108 | { "rm", I_RM }, | |
109 | { "rmdir", I_RMDIR }, | |
110 | { "symlink", I_SYMLINK }, | |
111 | { "version", I_VERSION }, | |
112 | { "!", I_SHELL }, | |
113 | { "?", I_HELP }, | |
114 | { NULL, -1} | |
115 | }; | |
116 | ||
117 | static void | |
118 | help(void) | |
119 | { | |
120 | printf("Available commands:\n"); | |
121 | printf("cd path Change remote directory to 'path'\n"); | |
122 | printf("lcd path Change local directory to 'path'\n"); | |
123 | printf("chgrp grp path Change group of file 'path' to 'grp'\n"); | |
124 | printf("chmod mode path Change permissions of file 'path' to 'mode'\n"); | |
125 | printf("chown own path Change owner of file 'path' to 'own'\n"); | |
126 | printf("help Display this help text\n"); | |
127 | printf("get remote-path [local-path] Download file\n"); | |
128 | printf("lls [ls-options [path]] Display local directory listing\n"); | |
129 | printf("ln oldpath newpath Symlink remote file\n"); | |
130 | printf("lmkdir path Create local directory\n"); | |
131 | printf("lpwd Print local working directory\n"); | |
132 | printf("ls [path] Display remote directory listing\n"); | |
133 | printf("lumask umask Set local umask to 'umask'\n"); | |
134 | printf("mkdir path Create remote directory\n"); | |
135 | printf("put local-path [remote-path] Upload file\n"); | |
136 | printf("pwd Display remote working directory\n"); | |
137 | printf("exit Quit sftp\n"); | |
138 | printf("quit Quit sftp\n"); | |
139 | printf("rename oldpath newpath Rename remote file\n"); | |
140 | printf("rmdir path Remove remote directory\n"); | |
141 | printf("rm path Delete remote file\n"); | |
142 | printf("symlink oldpath newpath Symlink remote file\n"); | |
143 | printf("version Show SFTP version\n"); | |
144 | printf("!command Execute 'command' in local shell\n"); | |
145 | printf("! Escape to local shell\n"); | |
146 | printf("? Synonym for help\n"); | |
147 | } | |
148 | ||
149 | static void | |
150 | local_do_shell(const char *args) | |
151 | { | |
152 | int status; | |
153 | char *shell; | |
154 | pid_t pid; | |
155 | ||
156 | if (!*args) | |
157 | args = NULL; | |
158 | ||
159 | if ((shell = getenv("SHELL")) == NULL) | |
160 | shell = _PATH_BSHELL; | |
161 | ||
162 | if ((pid = fork()) == -1) | |
163 | fatal("Couldn't fork: %s", strerror(errno)); | |
164 | ||
165 | if (pid == 0) { | |
166 | /* XXX: child has pipe fds to ssh subproc open - issue? */ | |
167 | if (args) { | |
168 | debug3("Executing %s -c \"%s\"", shell, args); | |
169 | execl(shell, shell, "-c", args, (char *)NULL); | |
170 | } else { | |
171 | debug3("Executing %s", shell); | |
172 | execl(shell, shell, (char *)NULL); | |
173 | } | |
174 | fprintf(stderr, "Couldn't execute \"%s\": %s\n", shell, | |
175 | strerror(errno)); | |
176 | _exit(1); | |
177 | } | |
178 | while (waitpid(pid, &status, 0) == -1) | |
179 | if (errno != EINTR) | |
180 | fatal("Couldn't wait for child: %s", strerror(errno)); | |
181 | if (!WIFEXITED(status)) | |
182 | error("Shell exited abormally"); | |
183 | else if (WEXITSTATUS(status)) | |
184 | error("Shell exited with status %d", WEXITSTATUS(status)); | |
185 | } | |
186 | ||
187 | static void | |
188 | local_do_ls(const char *args) | |
189 | { | |
190 | if (!args || !*args) | |
191 | local_do_shell(_PATH_LS); | |
192 | else { | |
193 | int len = strlen(_PATH_LS " ") + strlen(args) + 1; | |
194 | char *buf = xmalloc(len); | |
195 | ||
196 | /* XXX: quoting - rip quoting code from ftp? */ | |
197 | snprintf(buf, len, _PATH_LS " %s", args); | |
198 | local_do_shell(buf); | |
199 | xfree(buf); | |
200 | } | |
201 | } | |
202 | ||
203 | /* Strip one path (usually the pwd) from the start of another */ | |
204 | static char * | |
205 | path_strip(char *path, char *strip) | |
206 | { | |
207 | size_t len; | |
208 | ||
209 | if (strip == NULL) | |
210 | return (xstrdup(path)); | |
211 | ||
212 | len = strlen(strip); | |
213 | if (strip != NULL && strncmp(path, strip, len) == 0) { | |
214 | if (strip[len - 1] != '/' && path[len] == '/') | |
215 | len++; | |
216 | return (xstrdup(path + len)); | |
217 | } | |
218 | ||
219 | return (xstrdup(path)); | |
220 | } | |
221 | ||
222 | static char * | |
223 | path_append(char *p1, char *p2) | |
224 | { | |
225 | char *ret; | |
226 | int len = strlen(p1) + strlen(p2) + 2; | |
227 | ||
228 | ret = xmalloc(len); | |
229 | strlcpy(ret, p1, len); | |
230 | if (p1[strlen(p1) - 1] != '/') | |
231 | strlcat(ret, "/", len); | |
232 | strlcat(ret, p2, len); | |
233 | ||
234 | return(ret); | |
235 | } | |
236 | ||
237 | static char * | |
238 | make_absolute(char *p, char *pwd) | |
239 | { | |
240 | char *abs; | |
241 | ||
242 | /* Derelativise */ | |
243 | if (p && p[0] != '/') { | |
244 | abs = path_append(pwd, p); | |
245 | xfree(p); | |
246 | return(abs); | |
247 | } else | |
248 | return(p); | |
249 | } | |
250 | ||
251 | static int | |
252 | infer_path(const char *p, char **ifp) | |
253 | { | |
254 | char *cp; | |
255 | ||
256 | cp = strrchr(p, '/'); | |
257 | if (cp == NULL) { | |
258 | *ifp = xstrdup(p); | |
259 | return(0); | |
260 | } | |
261 | ||
262 | if (!cp[1]) { | |
263 | error("Invalid path"); | |
264 | return(-1); | |
265 | } | |
266 | ||
267 | *ifp = xstrdup(cp + 1); | |
268 | return(0); | |
269 | } | |
270 | ||
271 | static int | |
272 | parse_getput_flags(const char **cpp, int *pflag) | |
273 | { | |
274 | const char *cp = *cpp; | |
275 | ||
276 | /* Check for flags */ | |
277 | if (cp[0] == '-' && cp[1] && strchr(WHITESPACE, cp[2])) { | |
278 | switch (cp[1]) { | |
279 | case 'p': | |
280 | case 'P': | |
281 | *pflag = 1; | |
282 | break; | |
283 | default: | |
284 | error("Invalid flag -%c", cp[1]); | |
285 | return(-1); | |
286 | } | |
287 | cp += 2; | |
288 | *cpp = cp + strspn(cp, WHITESPACE); | |
289 | } | |
290 | ||
291 | return(0); | |
292 | } | |
293 | ||
294 | static int | |
295 | parse_ls_flags(const char **cpp, int *lflag) | |
296 | { | |
297 | const char *cp = *cpp; | |
298 | ||
299 | /* Check for flags */ | |
300 | if (cp++[0] == '-') { | |
301 | for(; strchr(WHITESPACE, *cp) == NULL; cp++) { | |
302 | switch (*cp) { | |
303 | case 'l': | |
304 | *lflag = 1; | |
305 | break; | |
306 | default: | |
307 | error("Invalid flag -%c", *cp); | |
308 | return(-1); | |
309 | } | |
310 | } | |
311 | *cpp = cp + strspn(cp, WHITESPACE); | |
312 | } | |
313 | ||
314 | return(0); | |
315 | } | |
316 | ||
317 | static int | |
318 | get_pathname(const char **cpp, char **path) | |
319 | { | |
320 | const char *cp = *cpp, *end; | |
321 | char quot; | |
322 | int i; | |
323 | ||
324 | cp += strspn(cp, WHITESPACE); | |
325 | if (!*cp) { | |
326 | *cpp = cp; | |
327 | *path = NULL; | |
328 | return (0); | |
329 | } | |
330 | ||
331 | /* Check for quoted filenames */ | |
332 | if (*cp == '\"' || *cp == '\'') { | |
333 | quot = *cp++; | |
334 | ||
335 | end = strchr(cp, quot); | |
336 | if (end == NULL) { | |
337 | error("Unterminated quote"); | |
338 | goto fail; | |
339 | } | |
340 | if (cp == end) { | |
341 | error("Empty quotes"); | |
342 | goto fail; | |
343 | } | |
344 | *cpp = end + 1 + strspn(end + 1, WHITESPACE); | |
345 | } else { | |
346 | /* Read to end of filename */ | |
347 | end = strpbrk(cp, WHITESPACE); | |
348 | if (end == NULL) | |
349 | end = strchr(cp, '\0'); | |
350 | *cpp = end + strspn(end, WHITESPACE); | |
351 | } | |
352 | ||
353 | i = end - cp; | |
354 | ||
355 | *path = xmalloc(i + 1); | |
356 | memcpy(*path, cp, i); | |
357 | (*path)[i] = '\0'; | |
358 | return(0); | |
359 | ||
360 | fail: | |
361 | *path = NULL; | |
362 | return (-1); | |
363 | } | |
364 | ||
365 | static int | |
366 | is_dir(char *path) | |
367 | { | |
368 | struct stat sb; | |
369 | ||
370 | /* XXX: report errors? */ | |
371 | if (stat(path, &sb) == -1) | |
372 | return(0); | |
373 | ||
374 | return(sb.st_mode & S_IFDIR); | |
375 | } | |
376 | ||
377 | static int | |
378 | remote_is_dir(struct sftp_conn *conn, char *path) | |
379 | { | |
380 | Attrib *a; | |
381 | ||
382 | /* XXX: report errors? */ | |
383 | if ((a = do_stat(conn, path, 1)) == NULL) | |
384 | return(0); | |
385 | if (!(a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)) | |
386 | return(0); | |
387 | return(a->perm & S_IFDIR); | |
388 | } | |
389 | ||
390 | static int | |
391 | process_get(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag) | |
392 | { | |
393 | char *abs_src = NULL; | |
394 | char *abs_dst = NULL; | |
395 | char *tmp; | |
396 | glob_t g; | |
397 | int err = 0; | |
398 | int i; | |
399 | ||
400 | abs_src = xstrdup(src); | |
401 | abs_src = make_absolute(abs_src, pwd); | |
402 | ||
403 | memset(&g, 0, sizeof(g)); | |
404 | debug3("Looking up %s", abs_src); | |
405 | if (remote_glob(conn, abs_src, 0, NULL, &g)) { | |
406 | error("File \"%s\" not found.", abs_src); | |
407 | err = -1; | |
408 | goto out; | |
409 | } | |
410 | ||
411 | /* Only one match, dst may be file, directory or unspecified */ | |
412 | if (g.gl_pathv[0] && g.gl_matchc == 1) { | |
413 | if (dst) { | |
414 | /* If directory specified, append filename */ | |
415 | if (is_dir(dst)) { | |
416 | if (infer_path(g.gl_pathv[0], &tmp)) { | |
417 | err = 1; | |
418 | goto out; | |
419 | } | |
420 | abs_dst = path_append(dst, tmp); | |
421 | xfree(tmp); | |
422 | } else | |
423 | abs_dst = xstrdup(dst); | |
424 | } else if (infer_path(g.gl_pathv[0], &abs_dst)) { | |
425 | err = -1; | |
426 | goto out; | |
427 | } | |
428 | printf("Fetching %s to %s\n", g.gl_pathv[0], abs_dst); | |
429 | err = do_download(conn, g.gl_pathv[0], abs_dst, pflag); | |
430 | goto out; | |
431 | } | |
432 | ||
433 | /* Multiple matches, dst may be directory or unspecified */ | |
434 | if (dst && !is_dir(dst)) { | |
435 | error("Multiple files match, but \"%s\" is not a directory", | |
436 | dst); | |
437 | err = -1; | |
438 | goto out; | |
439 | } | |
440 | ||
441 | for (i = 0; g.gl_pathv[i]; i++) { | |
442 | if (infer_path(g.gl_pathv[i], &tmp)) { | |
443 | err = -1; | |
444 | goto out; | |
445 | } | |
446 | if (dst) { | |
447 | abs_dst = path_append(dst, tmp); | |
448 | xfree(tmp); | |
449 | } else | |
450 | abs_dst = tmp; | |
451 | ||
452 | printf("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); | |
453 | if (do_download(conn, g.gl_pathv[i], abs_dst, pflag) == -1) | |
454 | err = -1; | |
455 | xfree(abs_dst); | |
456 | abs_dst = NULL; | |
457 | } | |
458 | ||
459 | out: | |
460 | xfree(abs_src); | |
461 | if (abs_dst) | |
462 | xfree(abs_dst); | |
463 | globfree(&g); | |
464 | return(err); | |
465 | } | |
466 | ||
467 | static int | |
468 | process_put(struct sftp_conn *conn, char *src, char *dst, char *pwd, int pflag) | |
469 | { | |
470 | char *tmp_dst = NULL; | |
471 | char *abs_dst = NULL; | |
472 | char *tmp; | |
473 | glob_t g; | |
474 | int err = 0; | |
475 | int i; | |
476 | ||
477 | if (dst) { | |
478 | tmp_dst = xstrdup(dst); | |
479 | tmp_dst = make_absolute(tmp_dst, pwd); | |
480 | } | |
481 | ||
482 | memset(&g, 0, sizeof(g)); | |
483 | debug3("Looking up %s", src); | |
484 | if (glob(src, 0, NULL, &g)) { | |
485 | error("File \"%s\" not found.", src); | |
486 | err = -1; | |
487 | goto out; | |
488 | } | |
489 | ||
490 | /* Only one match, dst may be file, directory or unspecified */ | |
491 | if (g.gl_pathv[0] && g.gl_matchc == 1) { | |
492 | if (tmp_dst) { | |
493 | /* If directory specified, append filename */ | |
494 | if (remote_is_dir(conn, tmp_dst)) { | |
495 | if (infer_path(g.gl_pathv[0], &tmp)) { | |
496 | err = 1; | |
497 | goto out; | |
498 | } | |
499 | abs_dst = path_append(tmp_dst, tmp); | |
500 | xfree(tmp); | |
501 | } else | |
502 | abs_dst = xstrdup(tmp_dst); | |
503 | } else { | |
504 | if (infer_path(g.gl_pathv[0], &abs_dst)) { | |
505 | err = -1; | |
506 | goto out; | |
507 | } | |
508 | abs_dst = make_absolute(abs_dst, pwd); | |
509 | } | |
510 | printf("Uploading %s to %s\n", g.gl_pathv[0], abs_dst); | |
511 | err = do_upload(conn, g.gl_pathv[0], abs_dst, pflag); | |
512 | goto out; | |
513 | } | |
514 | ||
515 | /* Multiple matches, dst may be directory or unspecified */ | |
516 | if (tmp_dst && !remote_is_dir(conn, tmp_dst)) { | |
517 | error("Multiple files match, but \"%s\" is not a directory", | |
518 | tmp_dst); | |
519 | err = -1; | |
520 | goto out; | |
521 | } | |
522 | ||
523 | for (i = 0; g.gl_pathv[i]; i++) { | |
524 | if (infer_path(g.gl_pathv[i], &tmp)) { | |
525 | err = -1; | |
526 | goto out; | |
527 | } | |
528 | if (tmp_dst) { | |
529 | abs_dst = path_append(tmp_dst, tmp); | |
530 | xfree(tmp); | |
531 | } else | |
532 | abs_dst = make_absolute(tmp, pwd); | |
533 | ||
534 | printf("Uploading %s to %s\n", g.gl_pathv[i], abs_dst); | |
535 | if (do_upload(conn, g.gl_pathv[i], abs_dst, pflag) == -1) | |
536 | err = -1; | |
537 | } | |
538 | ||
539 | out: | |
540 | if (abs_dst) | |
541 | xfree(abs_dst); | |
542 | if (tmp_dst) | |
543 | xfree(tmp_dst); | |
544 | return(err); | |
545 | } | |
546 | ||
547 | static int | |
548 | sdirent_comp(const void *aa, const void *bb) | |
549 | { | |
550 | SFTP_DIRENT *a = *(SFTP_DIRENT **)aa; | |
551 | SFTP_DIRENT *b = *(SFTP_DIRENT **)bb; | |
552 | ||
553 | return (strcmp(a->filename, b->filename)); | |
554 | } | |
555 | ||
556 | /* sftp ls.1 replacement for directories */ | |
557 | static int | |
558 | do_ls_dir(struct sftp_conn *conn, char *path, char *strip_path, int lflag) | |
559 | { | |
560 | int n; | |
561 | SFTP_DIRENT **d; | |
562 | ||
563 | if ((n = do_readdir(conn, path, &d)) != 0) | |
564 | return (n); | |
565 | ||
566 | /* Count entries for sort */ | |
567 | for (n = 0; d[n] != NULL; n++) | |
568 | ; | |
569 | ||
570 | qsort(d, n, sizeof(*d), sdirent_comp); | |
571 | ||
572 | for (n = 0; d[n] != NULL; n++) { | |
573 | char *tmp, *fname; | |
574 | ||
575 | tmp = path_append(path, d[n]->filename); | |
576 | fname = path_strip(tmp, strip_path); | |
577 | xfree(tmp); | |
578 | ||
579 | if (lflag) { | |
580 | char *lname; | |
581 | struct stat sb; | |
582 | ||
583 | memset(&sb, 0, sizeof(sb)); | |
584 | attrib_to_stat(&d[n]->a, &sb); | |
585 | lname = ls_file(fname, &sb, 1); | |
586 | printf("%s\n", lname); | |
587 | xfree(lname); | |
588 | } else { | |
589 | /* XXX - multicolumn display would be nice here */ | |
590 | printf("%s\n", fname); | |
591 | } | |
592 | ||
593 | xfree(fname); | |
594 | } | |
595 | ||
596 | free_sftp_dirents(d); | |
597 | return (0); | |
598 | } | |
599 | ||
600 | /* sftp ls.1 replacement which handles path globs */ | |
601 | static int | |
602 | do_globbed_ls(struct sftp_conn *conn, char *path, char *strip_path, | |
603 | int lflag) | |
604 | { | |
605 | glob_t g; | |
606 | int i; | |
607 | Attrib *a; | |
608 | struct stat sb; | |
609 | ||
610 | memset(&g, 0, sizeof(g)); | |
611 | ||
612 | if (remote_glob(conn, path, GLOB_MARK|GLOB_NOCHECK|GLOB_BRACE, | |
613 | NULL, &g)) { | |
614 | error("Can't ls: \"%s\" not found", path); | |
615 | return (-1); | |
616 | } | |
617 | ||
618 | /* | |
619 | * If the glob returns a single match, which is the same as the | |
620 | * input glob, and it is a directory, then just list its contents | |
621 | */ | |
622 | if (g.gl_pathc == 1 && | |
623 | strncmp(path, g.gl_pathv[0], strlen(g.gl_pathv[0]) - 1) == 0) { | |
624 | if ((a = do_lstat(conn, path, 1)) == NULL) { | |
625 | globfree(&g); | |
626 | return (-1); | |
627 | } | |
628 | if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) && | |
629 | S_ISDIR(a->perm)) { | |
630 | globfree(&g); | |
631 | return (do_ls_dir(conn, path, strip_path, lflag)); | |
632 | } | |
633 | } | |
634 | ||
635 | for (i = 0; g.gl_pathv[i]; i++) { | |
636 | char *fname, *lname; | |
637 | ||
638 | fname = path_strip(g.gl_pathv[i], strip_path); | |
639 | ||
640 | if (lflag) { | |
641 | /* | |
642 | * XXX: this is slow - 1 roundtrip per path | |
643 | * A solution to this is to fork glob() and | |
644 | * build a sftp specific version which keeps the | |
645 | * attribs (which currently get thrown away) | |
646 | * that the server returns as well as the filenames. | |
647 | */ | |
648 | memset(&sb, 0, sizeof(sb)); | |
649 | a = do_lstat(conn, g.gl_pathv[i], 1); | |
650 | if (a != NULL) | |
651 | attrib_to_stat(a, &sb); | |
652 | lname = ls_file(fname, &sb, 1); | |
653 | printf("%s\n", lname); | |
654 | xfree(lname); | |
655 | } else { | |
656 | /* XXX - multicolumn display would be nice here */ | |
657 | printf("%s\n", fname); | |
658 | } | |
659 | xfree(fname); | |
660 | } | |
661 | ||
662 | if (g.gl_pathc) | |
663 | globfree(&g); | |
664 | ||
665 | return (0); | |
666 | } | |
667 | ||
668 | static int | |
669 | parse_args(const char **cpp, int *pflag, int *lflag, | |
670 | unsigned long *n_arg, char **path1, char **path2) | |
671 | { | |
672 | const char *cmd, *cp = *cpp; | |
673 | char *cp2; | |
674 | int base = 0; | |
675 | long l; | |
676 | int i, cmdnum; | |
677 | ||
678 | /* Skip leading whitespace */ | |
679 | cp = cp + strspn(cp, WHITESPACE); | |
680 | ||
681 | /* Ignore blank lines */ | |
682 | if (!*cp) | |
683 | return(-1); | |
684 | ||
685 | /* Figure out which command we have */ | |
686 | for (i = 0; cmds[i].c; i++) { | |
687 | int cmdlen = strlen(cmds[i].c); | |
688 | ||
689 | /* Check for command followed by whitespace */ | |
690 | if (!strncasecmp(cp, cmds[i].c, cmdlen) && | |
691 | strchr(WHITESPACE, cp[cmdlen])) { | |
692 | cp += cmdlen; | |
693 | cp = cp + strspn(cp, WHITESPACE); | |
694 | break; | |
695 | } | |
696 | } | |
697 | cmdnum = cmds[i].n; | |
698 | cmd = cmds[i].c; | |
699 | ||
700 | /* Special case */ | |
701 | if (*cp == '!') { | |
702 | cp++; | |
703 | cmdnum = I_SHELL; | |
704 | } else if (cmdnum == -1) { | |
705 | error("Invalid command."); | |
706 | return(-1); | |
707 | } | |
708 | ||
709 | /* Get arguments and parse flags */ | |
710 | *lflag = *pflag = *n_arg = 0; | |
711 | *path1 = *path2 = NULL; | |
712 | switch (cmdnum) { | |
713 | case I_GET: | |
714 | case I_PUT: | |
715 | if (parse_getput_flags(&cp, pflag)) | |
716 | return(-1); | |
717 | /* Get first pathname (mandatory) */ | |
718 | if (get_pathname(&cp, path1)) | |
719 | return(-1); | |
720 | if (*path1 == NULL) { | |
721 | error("You must specify at least one path after a " | |
722 | "%s command.", cmd); | |
723 | return(-1); | |
724 | } | |
725 | /* Try to get second pathname (optional) */ | |
726 | if (get_pathname(&cp, path2)) | |
727 | return(-1); | |
728 | break; | |
729 | case I_RENAME: | |
730 | case I_SYMLINK: | |
731 | if (get_pathname(&cp, path1)) | |
732 | return(-1); | |
733 | if (get_pathname(&cp, path2)) | |
734 | return(-1); | |
735 | if (!*path1 || !*path2) { | |
736 | error("You must specify two paths after a %s " | |
737 | "command.", cmd); | |
738 | return(-1); | |
739 | } | |
740 | break; | |
741 | case I_RM: | |
742 | case I_MKDIR: | |
743 | case I_RMDIR: | |
744 | case I_CHDIR: | |
745 | case I_LCHDIR: | |
746 | case I_LMKDIR: | |
747 | /* Get pathname (mandatory) */ | |
748 | if (get_pathname(&cp, path1)) | |
749 | return(-1); | |
750 | if (*path1 == NULL) { | |
751 | error("You must specify a path after a %s command.", | |
752 | cmd); | |
753 | return(-1); | |
754 | } | |
755 | break; | |
756 | case I_LS: | |
757 | if (parse_ls_flags(&cp, lflag)) | |
758 | return(-1); | |
759 | /* Path is optional */ | |
760 | if (get_pathname(&cp, path1)) | |
761 | return(-1); | |
762 | break; | |
763 | case I_LLS: | |
764 | case I_SHELL: | |
765 | /* Uses the rest of the line */ | |
766 | break; | |
767 | case I_LUMASK: | |
768 | base = 8; | |
769 | case I_CHMOD: | |
770 | base = 8; | |
771 | case I_CHOWN: | |
772 | case I_CHGRP: | |
773 | /* Get numeric arg (mandatory) */ | |
774 | l = strtol(cp, &cp2, base); | |
775 | if (cp2 == cp || ((l == LONG_MIN || l == LONG_MAX) && | |
776 | errno == ERANGE) || l < 0) { | |
777 | error("You must supply a numeric argument " | |
778 | "to the %s command.", cmd); | |
779 | return(-1); | |
780 | } | |
781 | cp = cp2; | |
782 | *n_arg = l; | |
783 | if (cmdnum == I_LUMASK && strchr(WHITESPACE, *cp)) | |
784 | break; | |
785 | if (cmdnum == I_LUMASK || !strchr(WHITESPACE, *cp)) { | |
786 | error("You must supply a numeric argument " | |
787 | "to the %s command.", cmd); | |
788 | return(-1); | |
789 | } | |
790 | cp += strspn(cp, WHITESPACE); | |
791 | ||
792 | /* Get pathname (mandatory) */ | |
793 | if (get_pathname(&cp, path1)) | |
794 | return(-1); | |
795 | if (*path1 == NULL) { | |
796 | error("You must specify a path after a %s command.", | |
797 | cmd); | |
798 | return(-1); | |
799 | } | |
800 | break; | |
801 | case I_QUIT: | |
802 | case I_PWD: | |
803 | case I_LPWD: | |
804 | case I_HELP: | |
805 | case I_VERSION: | |
806 | break; | |
807 | default: | |
808 | fatal("Command not implemented"); | |
809 | } | |
810 | ||
811 | *cpp = cp; | |
812 | return(cmdnum); | |
813 | } | |
814 | ||
815 | static int | |
816 | parse_dispatch_command(struct sftp_conn *conn, const char *cmd, char **pwd) | |
817 | { | |
818 | char *path1, *path2, *tmp; | |
819 | int pflag, lflag, cmdnum, i; | |
820 | unsigned long n_arg; | |
821 | Attrib a, *aa; | |
822 | char path_buf[MAXPATHLEN]; | |
823 | int err = 0; | |
824 | glob_t g; | |
825 | ||
826 | path1 = path2 = NULL; | |
827 | cmdnum = parse_args(&cmd, &pflag, &lflag, &n_arg, | |
828 | &path1, &path2); | |
829 | ||
830 | memset(&g, 0, sizeof(g)); | |
831 | ||
832 | /* Perform command */ | |
833 | switch (cmdnum) { | |
834 | case -1: | |
835 | break; | |
836 | case I_GET: | |
837 | err = process_get(conn, path1, path2, *pwd, pflag); | |
838 | break; | |
839 | case I_PUT: | |
840 | err = process_put(conn, path1, path2, *pwd, pflag); | |
841 | break; | |
842 | case I_RENAME: | |
843 | path1 = make_absolute(path1, *pwd); | |
844 | path2 = make_absolute(path2, *pwd); | |
845 | err = do_rename(conn, path1, path2); | |
846 | break; | |
847 | case I_SYMLINK: | |
848 | path2 = make_absolute(path2, *pwd); | |
849 | err = do_symlink(conn, path1, path2); | |
850 | break; | |
851 | case I_RM: | |
852 | path1 = make_absolute(path1, *pwd); | |
853 | remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g); | |
854 | for (i = 0; g.gl_pathv[i]; i++) { | |
855 | printf("Removing %s\n", g.gl_pathv[i]); | |
856 | if (do_rm(conn, g.gl_pathv[i]) == -1) | |
857 | err = -1; | |
858 | } | |
859 | break; | |
860 | case I_MKDIR: | |
861 | path1 = make_absolute(path1, *pwd); | |
862 | attrib_clear(&a); | |
863 | a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS; | |
864 | a.perm = 0777; | |
865 | err = do_mkdir(conn, path1, &a); | |
866 | break; | |
867 | case I_RMDIR: | |
868 | path1 = make_absolute(path1, *pwd); | |
869 | err = do_rmdir(conn, path1); | |
870 | break; | |
871 | case I_CHDIR: | |
872 | path1 = make_absolute(path1, *pwd); | |
873 | if ((tmp = do_realpath(conn, path1)) == NULL) { | |
874 | err = 1; | |
875 | break; | |
876 | } | |
877 | if ((aa = do_stat(conn, tmp, 0)) == NULL) { | |
878 | xfree(tmp); | |
879 | err = 1; | |
880 | break; | |
881 | } | |
882 | if (!(aa->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)) { | |
883 | error("Can't change directory: Can't check target"); | |
884 | xfree(tmp); | |
885 | err = 1; | |
886 | break; | |
887 | } | |
888 | if (!S_ISDIR(aa->perm)) { | |
889 | error("Can't change directory: \"%s\" is not " | |
890 | "a directory", tmp); | |
891 | xfree(tmp); | |
892 | err = 1; | |
893 | break; | |
894 | } | |
895 | xfree(*pwd); | |
896 | *pwd = tmp; | |
897 | break; | |
898 | case I_LS: | |
899 | if (!path1) { | |
900 | do_globbed_ls(conn, *pwd, *pwd, lflag); | |
901 | break; | |
902 | } | |
903 | ||
904 | /* Strip pwd off beginning of non-absolute paths */ | |
905 | tmp = NULL; | |
906 | if (*path1 != '/') | |
907 | tmp = *pwd; | |
908 | ||
909 | path1 = make_absolute(path1, *pwd); | |
910 | ||
911 | do_globbed_ls(conn, path1, tmp, lflag); | |
912 | break; | |
913 | case I_LCHDIR: | |
914 | if (chdir(path1) == -1) { | |
915 | error("Couldn't change local directory to " | |
916 | "\"%s\": %s", path1, strerror(errno)); | |
917 | err = 1; | |
918 | } | |
919 | break; | |
920 | case I_LMKDIR: | |
921 | if (mkdir(path1, 0777) == -1) { | |
922 | error("Couldn't create local directory " | |
923 | "\"%s\": %s", path1, strerror(errno)); | |
924 | err = 1; | |
925 | } | |
926 | break; | |
927 | case I_LLS: | |
928 | local_do_ls(cmd); | |
929 | break; | |
930 | case I_SHELL: | |
931 | local_do_shell(cmd); | |
932 | break; | |
933 | case I_LUMASK: | |
934 | umask(n_arg); | |
935 | printf("Local umask: %03lo\n", n_arg); | |
936 | break; | |
937 | case I_CHMOD: | |
938 | path1 = make_absolute(path1, *pwd); | |
939 | attrib_clear(&a); | |
940 | a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS; | |
941 | a.perm = n_arg; | |
942 | remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g); | |
943 | for (i = 0; g.gl_pathv[i]; i++) { | |
944 | printf("Changing mode on %s\n", g.gl_pathv[i]); | |
945 | do_setstat(conn, g.gl_pathv[i], &a); | |
946 | } | |
947 | break; | |
948 | case I_CHOWN: | |
949 | path1 = make_absolute(path1, *pwd); | |
950 | remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g); | |
951 | for (i = 0; g.gl_pathv[i]; i++) { | |
952 | if (!(aa = do_stat(conn, g.gl_pathv[i], 0))) | |
953 | continue; | |
954 | if (!(aa->flags & SSH2_FILEXFER_ATTR_UIDGID)) { | |
955 | error("Can't get current ownership of " | |
956 | "remote file \"%s\"", g.gl_pathv[i]); | |
957 | continue; | |
958 | } | |
959 | printf("Changing owner on %s\n", g.gl_pathv[i]); | |
960 | aa->flags &= SSH2_FILEXFER_ATTR_UIDGID; | |
961 | aa->uid = n_arg; | |
962 | do_setstat(conn, g.gl_pathv[i], aa); | |
963 | } | |
964 | break; | |
965 | case I_CHGRP: | |
966 | path1 = make_absolute(path1, *pwd); | |
967 | remote_glob(conn, path1, GLOB_NOCHECK, NULL, &g); | |
968 | for (i = 0; g.gl_pathv[i]; i++) { | |
969 | if (!(aa = do_stat(conn, g.gl_pathv[i], 0))) | |
970 | continue; | |
971 | if (!(aa->flags & SSH2_FILEXFER_ATTR_UIDGID)) { | |
972 | error("Can't get current ownership of " | |
973 | "remote file \"%s\"", g.gl_pathv[i]); | |
974 | continue; | |
975 | } | |
976 | printf("Changing group on %s\n", g.gl_pathv[i]); | |
977 | aa->flags &= SSH2_FILEXFER_ATTR_UIDGID; | |
978 | aa->gid = n_arg; | |
979 | do_setstat(conn, g.gl_pathv[i], aa); | |
980 | } | |
981 | break; | |
982 | case I_PWD: | |
983 | printf("Remote working directory: %s\n", *pwd); | |
984 | break; | |
985 | case I_LPWD: | |
986 | if (!getcwd(path_buf, sizeof(path_buf))) | |
987 | error("Couldn't get local cwd: %s", | |
988 | strerror(errno)); | |
989 | else | |
990 | printf("Local working directory: %s\n", | |
991 | path_buf); | |
992 | break; | |
993 | case I_QUIT: | |
994 | return(-1); | |
995 | case I_HELP: | |
996 | help(); | |
997 | break; | |
998 | case I_VERSION: | |
999 | printf("SFTP protocol version %u\n", sftp_proto_version(conn)); | |
1000 | break; | |
1001 | default: | |
1002 | fatal("%d is not implemented", cmdnum); | |
1003 | } | |
1004 | ||
1005 | if (g.gl_pathc) | |
1006 | globfree(&g); | |
1007 | if (path1) | |
1008 | xfree(path1); | |
1009 | if (path2) | |
1010 | xfree(path2); | |
1011 | ||
1012 | /* If an error occurs in batch mode we should abort. */ | |
1013 | if (infile != stdin && err > 0) | |
1014 | return -1; | |
1015 | ||
1016 | return(0); | |
1017 | } | |
1018 | ||
1019 | void | |
1020 | interactive_loop(int fd_in, int fd_out, char *file1, char *file2) | |
1021 | { | |
1022 | char *pwd; | |
1023 | char *dir = NULL; | |
1024 | char cmd[2048]; | |
1025 | struct sftp_conn *conn; | |
1026 | ||
1027 | conn = do_init(fd_in, fd_out, copy_buffer_len, num_requests); | |
1028 | if (conn == NULL) | |
1029 | fatal("Couldn't initialise connection to server"); | |
1030 | ||
1031 | pwd = do_realpath(conn, "."); | |
1032 | if (pwd == NULL) | |
1033 | fatal("Need cwd"); | |
1034 | ||
1035 | if (file1 != NULL) { | |
1036 | dir = xstrdup(file1); | |
1037 | dir = make_absolute(dir, pwd); | |
1038 | ||
1039 | if (remote_is_dir(conn, dir) && file2 == NULL) { | |
1040 | printf("Changing to: %s\n", dir); | |
1041 | snprintf(cmd, sizeof cmd, "cd \"%s\"", dir); | |
1042 | parse_dispatch_command(conn, cmd, &pwd); | |
1043 | } else { | |
1044 | if (file2 == NULL) | |
1045 | snprintf(cmd, sizeof cmd, "get %s", dir); | |
1046 | else | |
1047 | snprintf(cmd, sizeof cmd, "get %s %s", dir, | |
1048 | file2); | |
1049 | ||
1050 | parse_dispatch_command(conn, cmd, &pwd); | |
1051 | xfree(dir); | |
1052 | return; | |
1053 | } | |
1054 | xfree(dir); | |
1055 | } | |
1056 | #if HAVE_SETVBUF | |
1057 | setvbuf(stdout, NULL, _IOLBF, 0); | |
1058 | setvbuf(infile, NULL, _IOLBF, 0); | |
1059 | #else | |
1060 | setlinebuf(stdout); | |
1061 | setlinebuf(infile); | |
1062 | #endif | |
1063 | ||
1064 | for (;;) { | |
1065 | char *cp; | |
1066 | ||
1067 | printf("sftp> "); | |
1068 | ||
1069 | /* XXX: use libedit */ | |
1070 | if (fgets(cmd, sizeof(cmd), infile) == NULL) { | |
1071 | printf("\n"); | |
1072 | break; | |
1073 | } else if (infile != stdin) /* Bluff typing */ | |
1074 | printf("%s", cmd); | |
1075 | ||
1076 | cp = strrchr(cmd, '\n'); | |
1077 | if (cp) | |
1078 | *cp = '\0'; | |
1079 | ||
1080 | if (parse_dispatch_command(conn, cmd, &pwd)) | |
1081 | break; | |
1082 | } | |
1083 | xfree(pwd); | |
1084 | } |