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1 | /* | |
2 | * Copyright (c) 2001 Damien Miller. All rights reserved. | |
3 | * | |
4 | * Redistribution and use in source and binary forms, with or without | |
5 | * modification, are permitted provided that the following conditions | |
6 | * are met: | |
7 | * 1. Redistributions of source code must retain the above copyright | |
8 | * notice, this list of conditions and the following disclaimer. | |
9 | * 2. Redistributions in binary form must reproduce the above copyright | |
10 | * notice, this list of conditions and the following disclaimer in the | |
11 | * documentation and/or other materials provided with the distribution. | |
12 | * | |
13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
23 | */ | |
24 | ||
25 | /* XXX: globbed ls */ | |
26 | /* XXX: recursive operations */ | |
27 | ||
28 | #include "includes.h" | |
29 | RCSID("$OpenBSD: sftp-int.c,v 1.37 2001/06/23 15:12:20 itojun Exp $"); | |
30 | ||
31 | #include "buffer.h" | |
32 | #include "xmalloc.h" | |
33 | #include "log.h" | |
34 | #include "pathnames.h" | |
35 | ||
36 | #include "sftp.h" | |
37 | #include "sftp-common.h" | |
38 | #include "sftp-glob.h" | |
39 | #include "sftp-client.h" | |
40 | #include "sftp-int.h" | |
41 | ||
42 | /* File to read commands from */ | |
43 | extern FILE *infile; | |
44 | ||
45 | /* Version of server we are speaking to */ | |
46 | int version; | |
47 | ||
48 | /* Seperators for interactive commands */ | |
49 | #define WHITESPACE " \t\r\n" | |
50 | ||
51 | /* Commands for interactive mode */ | |
52 | #define I_CHDIR 1 | |
53 | #define I_CHGRP 2 | |
54 | #define I_CHMOD 3 | |
55 | #define I_CHOWN 4 | |
56 | #define I_GET 5 | |
57 | #define I_HELP 6 | |
58 | #define I_LCHDIR 7 | |
59 | #define I_LLS 8 | |
60 | #define I_LMKDIR 9 | |
61 | #define I_LPWD 10 | |
62 | #define I_LS 11 | |
63 | #define I_LUMASK 12 | |
64 | #define I_MKDIR 13 | |
65 | #define I_PUT 14 | |
66 | #define I_PWD 15 | |
67 | #define I_QUIT 16 | |
68 | #define I_RENAME 17 | |
69 | #define I_RM 18 | |
70 | #define I_RMDIR 19 | |
71 | #define I_SHELL 20 | |
72 | #define I_SYMLINK 21 | |
73 | #define I_VERSION 22 | |
74 | ||
75 | struct CMD { | |
76 | const char *c; | |
77 | const int n; | |
78 | }; | |
79 | ||
80 | const struct CMD cmds[] = { | |
81 | { "cd", I_CHDIR }, | |
82 | { "chdir", I_CHDIR }, | |
83 | { "chgrp", I_CHGRP }, | |
84 | { "chmod", I_CHMOD }, | |
85 | { "chown", I_CHOWN }, | |
86 | { "dir", I_LS }, | |
87 | { "exit", I_QUIT }, | |
88 | { "get", I_GET }, | |
89 | { "mget", I_GET }, | |
90 | { "help", I_HELP }, | |
91 | { "lcd", I_LCHDIR }, | |
92 | { "lchdir", I_LCHDIR }, | |
93 | { "lls", I_LLS }, | |
94 | { "lmkdir", I_LMKDIR }, | |
95 | { "ln", I_SYMLINK }, | |
96 | { "lpwd", I_LPWD }, | |
97 | { "ls", I_LS }, | |
98 | { "lumask", I_LUMASK }, | |
99 | { "mkdir", I_MKDIR }, | |
100 | { "put", I_PUT }, | |
101 | { "mput", I_PUT }, | |
102 | { "pwd", I_PWD }, | |
103 | { "quit", I_QUIT }, | |
104 | { "rename", I_RENAME }, | |
105 | { "rm", I_RM }, | |
106 | { "rmdir", I_RMDIR }, | |
107 | { "symlink", I_SYMLINK }, | |
108 | { "version", I_VERSION }, | |
109 | { "!", I_SHELL }, | |
110 | { "?", I_HELP }, | |
111 | { NULL, -1} | |
112 | }; | |
113 | ||
114 | static void | |
115 | help(void) | |
116 | { | |
117 | printf("Available commands:\n"); | |
118 | printf("cd path Change remote directory to 'path'\n"); | |
119 | printf("lcd path Change local directory to 'path'\n"); | |
120 | printf("chgrp grp path Change group of file 'path' to 'grp'\n"); | |
121 | printf("chmod mode path Change permissions of file 'path' to 'mode'\n"); | |
122 | printf("chown own path Change owner of file 'path' to 'own'\n"); | |
123 | printf("help Display this help text\n"); | |
124 | printf("get remote-path [local-path] Download file\n"); | |
125 | printf("lls [ls-options [path]] Display local directory listing\n"); | |
126 | printf("ln oldpath newpath Symlink remote file\n"); | |
127 | printf("lmkdir path Create local directory\n"); | |
128 | printf("lpwd Print local working directory\n"); | |
129 | printf("ls [path] Display remote directory listing\n"); | |
130 | printf("lumask umask Set local umask to 'umask'\n"); | |
131 | printf("mkdir path Create remote directory\n"); | |
132 | printf("put local-path [remote-path] Upload file\n"); | |
133 | printf("pwd Display remote working directory\n"); | |
134 | printf("exit Quit sftp\n"); | |
135 | printf("quit Quit sftp\n"); | |
136 | printf("rename oldpath newpath Rename remote file\n"); | |
137 | printf("rmdir path Remove remote directory\n"); | |
138 | printf("rm path Delete remote file\n"); | |
139 | printf("symlink oldpath newpath Symlink remote file\n"); | |
140 | printf("version Show SFTP version\n"); | |
141 | printf("!command Execute 'command' in local shell\n"); | |
142 | printf("! Escape to local shell\n"); | |
143 | printf("? Synonym for help\n"); | |
144 | } | |
145 | ||
146 | static void | |
147 | local_do_shell(const char *args) | |
148 | { | |
149 | int status; | |
150 | char *shell; | |
151 | pid_t pid; | |
152 | ||
153 | if (!*args) | |
154 | args = NULL; | |
155 | ||
156 | if ((shell = getenv("SHELL")) == NULL) | |
157 | shell = _PATH_BSHELL; | |
158 | ||
159 | if ((pid = fork()) == -1) | |
160 | fatal("Couldn't fork: %s", strerror(errno)); | |
161 | ||
162 | if (pid == 0) { | |
163 | /* XXX: child has pipe fds to ssh subproc open - issue? */ | |
164 | if (args) { | |
165 | debug3("Executing %s -c \"%s\"", shell, args); | |
166 | execl(shell, shell, "-c", args, NULL); | |
167 | } else { | |
168 | debug3("Executing %s", shell); | |
169 | execl(shell, shell, NULL); | |
170 | } | |
171 | fprintf(stderr, "Couldn't execute \"%s\": %s\n", shell, | |
172 | strerror(errno)); | |
173 | _exit(1); | |
174 | } | |
175 | if (waitpid(pid, &status, 0) == -1) | |
176 | fatal("Couldn't wait for child: %s", strerror(errno)); | |
177 | if (!WIFEXITED(status)) | |
178 | error("Shell exited abormally"); | |
179 | else if (WEXITSTATUS(status)) | |
180 | error("Shell exited with status %d", WEXITSTATUS(status)); | |
181 | } | |
182 | ||
183 | static void | |
184 | local_do_ls(const char *args) | |
185 | { | |
186 | if (!args || !*args) | |
187 | local_do_shell(_PATH_LS); | |
188 | else { | |
189 | int len = strlen(_PATH_LS " ") + strlen(args) + 1; | |
190 | char *buf = xmalloc(len); | |
191 | ||
192 | /* XXX: quoting - rip quoting code from ftp? */ | |
193 | snprintf(buf, len, _PATH_LS " %s", args); | |
194 | local_do_shell(buf); | |
195 | xfree(buf); | |
196 | } | |
197 | } | |
198 | ||
199 | static char * | |
200 | path_append(char *p1, char *p2) | |
201 | { | |
202 | char *ret; | |
203 | int len = strlen(p1) + strlen(p2) + 2; | |
204 | ||
205 | ret = xmalloc(len); | |
206 | strlcpy(ret, p1, len); | |
207 | strlcat(ret, "/", len); | |
208 | strlcat(ret, p2, len); | |
209 | ||
210 | return(ret); | |
211 | } | |
212 | ||
213 | static char * | |
214 | make_absolute(char *p, char *pwd) | |
215 | { | |
216 | char *abs; | |
217 | ||
218 | /* Derelativise */ | |
219 | if (p && p[0] != '/') { | |
220 | abs = path_append(pwd, p); | |
221 | xfree(p); | |
222 | return(abs); | |
223 | } else | |
224 | return(p); | |
225 | } | |
226 | ||
227 | static int | |
228 | infer_path(const char *p, char **ifp) | |
229 | { | |
230 | char *cp; | |
231 | ||
232 | cp = strrchr(p, '/'); | |
233 | if (cp == NULL) { | |
234 | *ifp = xstrdup(p); | |
235 | return(0); | |
236 | } | |
237 | ||
238 | if (!cp[1]) { | |
239 | error("Invalid path"); | |
240 | return(-1); | |
241 | } | |
242 | ||
243 | *ifp = xstrdup(cp + 1); | |
244 | return(0); | |
245 | } | |
246 | ||
247 | static int | |
248 | parse_getput_flags(const char **cpp, int *pflag) | |
249 | { | |
250 | const char *cp = *cpp; | |
251 | ||
252 | /* Check for flags */ | |
253 | if (cp[0] == '-' && cp[1] && strchr(WHITESPACE, cp[2])) { | |
254 | switch (cp[1]) { | |
255 | case 'p': | |
256 | case 'P': | |
257 | *pflag = 1; | |
258 | break; | |
259 | default: | |
260 | error("Invalid flag -%c", cp[1]); | |
261 | return(-1); | |
262 | } | |
263 | cp += 2; | |
264 | *cpp = cp + strspn(cp, WHITESPACE); | |
265 | } | |
266 | ||
267 | return(0); | |
268 | } | |
269 | ||
270 | static int | |
271 | get_pathname(const char **cpp, char **path) | |
272 | { | |
273 | const char *cp = *cpp, *end; | |
274 | char quot; | |
275 | int i; | |
276 | ||
277 | cp += strspn(cp, WHITESPACE); | |
278 | if (!*cp) { | |
279 | *cpp = cp; | |
280 | *path = NULL; | |
281 | return (0); | |
282 | } | |
283 | ||
284 | /* Check for quoted filenames */ | |
285 | if (*cp == '\"' || *cp == '\'') { | |
286 | quot = *cp++; | |
287 | ||
288 | end = strchr(cp, quot); | |
289 | if (end == NULL) { | |
290 | error("Unterminated quote"); | |
291 | goto fail; | |
292 | } | |
293 | if (cp == end) { | |
294 | error("Empty quotes"); | |
295 | goto fail; | |
296 | } | |
297 | *cpp = end + 1 + strspn(end + 1, WHITESPACE); | |
298 | } else { | |
299 | /* Read to end of filename */ | |
300 | end = strpbrk(cp, WHITESPACE); | |
301 | if (end == NULL) | |
302 | end = strchr(cp, '\0'); | |
303 | *cpp = end + strspn(end, WHITESPACE); | |
304 | } | |
305 | ||
306 | i = end - cp; | |
307 | ||
308 | *path = xmalloc(i + 1); | |
309 | memcpy(*path, cp, i); | |
310 | (*path)[i] = '\0'; | |
311 | return(0); | |
312 | ||
313 | fail: | |
314 | *path = NULL; | |
315 | return (-1); | |
316 | } | |
317 | ||
318 | static int | |
319 | is_dir(char *path) | |
320 | { | |
321 | struct stat sb; | |
322 | ||
323 | /* XXX: report errors? */ | |
324 | if (stat(path, &sb) == -1) | |
325 | return(0); | |
326 | ||
327 | return(sb.st_mode & S_IFDIR); | |
328 | } | |
329 | ||
330 | static int | |
331 | remote_is_dir(int in, int out, char *path) | |
332 | { | |
333 | Attrib *a; | |
334 | ||
335 | /* XXX: report errors? */ | |
336 | if ((a = do_stat(in, out, path, 1)) == NULL) | |
337 | return(0); | |
338 | if (!(a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)) | |
339 | return(0); | |
340 | return(a->perm & S_IFDIR); | |
341 | } | |
342 | ||
343 | static int | |
344 | process_get(int in, int out, char *src, char *dst, char *pwd, int pflag) | |
345 | { | |
346 | char *abs_src = NULL; | |
347 | char *abs_dst = NULL; | |
348 | char *tmp; | |
349 | glob_t g; | |
350 | int err = 0; | |
351 | int i; | |
352 | ||
353 | abs_src = xstrdup(src); | |
354 | abs_src = make_absolute(abs_src, pwd); | |
355 | ||
356 | memset(&g, 0, sizeof(g)); | |
357 | debug3("Looking up %s", abs_src); | |
358 | if (remote_glob(in, out, abs_src, 0, NULL, &g)) { | |
359 | error("File \"%s\" not found.", abs_src); | |
360 | err = -1; | |
361 | goto out; | |
362 | } | |
363 | ||
364 | /* Only one match, dst may be file, directory or unspecified */ | |
365 | if (g.gl_pathv[0] && g.gl_matchc == 1) { | |
366 | if (dst) { | |
367 | /* If directory specified, append filename */ | |
368 | if (is_dir(dst)) { | |
369 | if (infer_path(g.gl_pathv[0], &tmp)) { | |
370 | err = 1; | |
371 | goto out; | |
372 | } | |
373 | abs_dst = path_append(dst, tmp); | |
374 | xfree(tmp); | |
375 | } else | |
376 | abs_dst = xstrdup(dst); | |
377 | } else if (infer_path(g.gl_pathv[0], &abs_dst)) { | |
378 | err = -1; | |
379 | goto out; | |
380 | } | |
381 | printf("Fetching %s to %s\n", g.gl_pathv[0], abs_dst); | |
382 | err = do_download(in, out, g.gl_pathv[0], abs_dst, pflag); | |
383 | goto out; | |
384 | } | |
385 | ||
386 | /* Multiple matches, dst may be directory or unspecified */ | |
387 | if (dst && !is_dir(dst)) { | |
388 | error("Multiple files match, but \"%s\" is not a directory", | |
389 | dst); | |
390 | err = -1; | |
391 | goto out; | |
392 | } | |
393 | ||
394 | for(i = 0; g.gl_pathv[i]; i++) { | |
395 | if (infer_path(g.gl_pathv[i], &tmp)) { | |
396 | err = -1; | |
397 | goto out; | |
398 | } | |
399 | if (dst) { | |
400 | abs_dst = path_append(dst, tmp); | |
401 | xfree(tmp); | |
402 | } else | |
403 | abs_dst = tmp; | |
404 | ||
405 | printf("Fetching %s to %s\n", g.gl_pathv[i], abs_dst); | |
406 | if (do_download(in, out, g.gl_pathv[i], abs_dst, pflag) == -1) | |
407 | err = -1; | |
408 | xfree(abs_dst); | |
409 | abs_dst = NULL; | |
410 | } | |
411 | ||
412 | out: | |
413 | xfree(abs_src); | |
414 | if (abs_dst) | |
415 | xfree(abs_dst); | |
416 | globfree(&g); | |
417 | return(err); | |
418 | } | |
419 | ||
420 | static int | |
421 | process_put(int in, int out, char *src, char *dst, char *pwd, int pflag) | |
422 | { | |
423 | char *tmp_dst = NULL; | |
424 | char *abs_dst = NULL; | |
425 | char *tmp; | |
426 | glob_t g; | |
427 | int err = 0; | |
428 | int i; | |
429 | ||
430 | if (dst) { | |
431 | tmp_dst = xstrdup(dst); | |
432 | tmp_dst = make_absolute(tmp_dst, pwd); | |
433 | } | |
434 | ||
435 | memset(&g, 0, sizeof(g)); | |
436 | debug3("Looking up %s", src); | |
437 | if (glob(src, 0, NULL, &g)) { | |
438 | error("File \"%s\" not found.", src); | |
439 | err = -1; | |
440 | goto out; | |
441 | } | |
442 | ||
443 | /* Only one match, dst may be file, directory or unspecified */ | |
444 | if (g.gl_pathv[0] && g.gl_matchc == 1) { | |
445 | if (tmp_dst) { | |
446 | /* If directory specified, append filename */ | |
447 | if (remote_is_dir(in, out, tmp_dst)) { | |
448 | if (infer_path(g.gl_pathv[0], &tmp)) { | |
449 | err = 1; | |
450 | goto out; | |
451 | } | |
452 | abs_dst = path_append(tmp_dst, tmp); | |
453 | xfree(tmp); | |
454 | } else | |
455 | abs_dst = xstrdup(tmp_dst); | |
456 | } else { | |
457 | if (infer_path(g.gl_pathv[0], &abs_dst)) { | |
458 | err = -1; | |
459 | goto out; | |
460 | } | |
461 | abs_dst = make_absolute(abs_dst, pwd); | |
462 | } | |
463 | printf("Uploading %s to %s\n", g.gl_pathv[0], abs_dst); | |
464 | err = do_upload(in, out, g.gl_pathv[0], abs_dst, pflag); | |
465 | goto out; | |
466 | } | |
467 | ||
468 | /* Multiple matches, dst may be directory or unspecified */ | |
469 | if (tmp_dst && !remote_is_dir(in, out, tmp_dst)) { | |
470 | error("Multiple files match, but \"%s\" is not a directory", | |
471 | tmp_dst); | |
472 | err = -1; | |
473 | goto out; | |
474 | } | |
475 | ||
476 | for(i = 0; g.gl_pathv[i]; i++) { | |
477 | if (infer_path(g.gl_pathv[i], &tmp)) { | |
478 | err = -1; | |
479 | goto out; | |
480 | } | |
481 | if (tmp_dst) { | |
482 | abs_dst = path_append(tmp_dst, tmp); | |
483 | xfree(tmp); | |
484 | } else | |
485 | abs_dst = make_absolute(tmp, pwd); | |
486 | ||
487 | printf("Uploading %s to %s\n", g.gl_pathv[i], abs_dst); | |
488 | if (do_upload(in, out, g.gl_pathv[i], abs_dst, pflag) == -1) | |
489 | err = -1; | |
490 | } | |
491 | ||
492 | out: | |
493 | if (abs_dst) | |
494 | xfree(abs_dst); | |
495 | if (tmp_dst) | |
496 | xfree(tmp_dst); | |
497 | return(err); | |
498 | } | |
499 | ||
500 | static int | |
501 | parse_args(const char **cpp, int *pflag, unsigned long *n_arg, | |
502 | char **path1, char **path2) | |
503 | { | |
504 | const char *cmd, *cp = *cpp; | |
505 | char *cp2; | |
506 | int base = 0; | |
507 | long l; | |
508 | int i, cmdnum; | |
509 | ||
510 | /* Skip leading whitespace */ | |
511 | cp = cp + strspn(cp, WHITESPACE); | |
512 | ||
513 | /* Ignore blank lines */ | |
514 | if (!*cp) | |
515 | return(-1); | |
516 | ||
517 | /* Figure out which command we have */ | |
518 | for(i = 0; cmds[i].c; i++) { | |
519 | int cmdlen = strlen(cmds[i].c); | |
520 | ||
521 | /* Check for command followed by whitespace */ | |
522 | if (!strncasecmp(cp, cmds[i].c, cmdlen) && | |
523 | strchr(WHITESPACE, cp[cmdlen])) { | |
524 | cp += cmdlen; | |
525 | cp = cp + strspn(cp, WHITESPACE); | |
526 | break; | |
527 | } | |
528 | } | |
529 | cmdnum = cmds[i].n; | |
530 | cmd = cmds[i].c; | |
531 | ||
532 | /* Special case */ | |
533 | if (*cp == '!') { | |
534 | cp++; | |
535 | cmdnum = I_SHELL; | |
536 | } else if (cmdnum == -1) { | |
537 | error("Invalid command."); | |
538 | return(-1); | |
539 | } | |
540 | ||
541 | /* Get arguments and parse flags */ | |
542 | *pflag = *n_arg = 0; | |
543 | *path1 = *path2 = NULL; | |
544 | switch (cmdnum) { | |
545 | case I_GET: | |
546 | case I_PUT: | |
547 | if (parse_getput_flags(&cp, pflag)) | |
548 | return(-1); | |
549 | /* Get first pathname (mandatory) */ | |
550 | if (get_pathname(&cp, path1)) | |
551 | return(-1); | |
552 | if (*path1 == NULL) { | |
553 | error("You must specify at least one path after a " | |
554 | "%s command.", cmd); | |
555 | return(-1); | |
556 | } | |
557 | /* Try to get second pathname (optional) */ | |
558 | if (get_pathname(&cp, path2)) | |
559 | return(-1); | |
560 | break; | |
561 | case I_RENAME: | |
562 | case I_SYMLINK: | |
563 | if (get_pathname(&cp, path1)) | |
564 | return(-1); | |
565 | if (get_pathname(&cp, path2)) | |
566 | return(-1); | |
567 | if (!*path1 || !*path2) { | |
568 | error("You must specify two paths after a %s " | |
569 | "command.", cmd); | |
570 | return(-1); | |
571 | } | |
572 | break; | |
573 | case I_RM: | |
574 | case I_MKDIR: | |
575 | case I_RMDIR: | |
576 | case I_CHDIR: | |
577 | case I_LCHDIR: | |
578 | case I_LMKDIR: | |
579 | /* Get pathname (mandatory) */ | |
580 | if (get_pathname(&cp, path1)) | |
581 | return(-1); | |
582 | if (*path1 == NULL) { | |
583 | error("You must specify a path after a %s command.", | |
584 | cmd); | |
585 | return(-1); | |
586 | } | |
587 | break; | |
588 | case I_LS: | |
589 | /* Path is optional */ | |
590 | if (get_pathname(&cp, path1)) | |
591 | return(-1); | |
592 | break; | |
593 | case I_LLS: | |
594 | case I_SHELL: | |
595 | /* Uses the rest of the line */ | |
596 | break; | |
597 | case I_LUMASK: | |
598 | base = 8; | |
599 | case I_CHMOD: | |
600 | base = 8; | |
601 | case I_CHOWN: | |
602 | case I_CHGRP: | |
603 | /* Get numeric arg (mandatory) */ | |
604 | l = strtol(cp, &cp2, base); | |
605 | if (cp2 == cp || ((l == LONG_MIN || l == LONG_MAX) && | |
606 | errno == ERANGE) || l < 0) { | |
607 | error("You must supply a numeric argument " | |
608 | "to the %s command.", cmd); | |
609 | return(-1); | |
610 | } | |
611 | cp = cp2; | |
612 | *n_arg = l; | |
613 | if (cmdnum == I_LUMASK && strchr(WHITESPACE, *cp)) | |
614 | break; | |
615 | if (cmdnum == I_LUMASK || !strchr(WHITESPACE, *cp)) { | |
616 | error("You must supply a numeric argument " | |
617 | "to the %s command.", cmd); | |
618 | return(-1); | |
619 | } | |
620 | cp += strspn(cp, WHITESPACE); | |
621 | ||
622 | /* Get pathname (mandatory) */ | |
623 | if (get_pathname(&cp, path1)) | |
624 | return(-1); | |
625 | if (*path1 == NULL) { | |
626 | error("You must specify a path after a %s command.", | |
627 | cmd); | |
628 | return(-1); | |
629 | } | |
630 | break; | |
631 | case I_QUIT: | |
632 | case I_PWD: | |
633 | case I_LPWD: | |
634 | case I_HELP: | |
635 | case I_VERSION: | |
636 | break; | |
637 | default: | |
638 | fatal("Command not implemented"); | |
639 | } | |
640 | ||
641 | *cpp = cp; | |
642 | return(cmdnum); | |
643 | } | |
644 | ||
645 | static int | |
646 | parse_dispatch_command(int in, int out, const char *cmd, char **pwd) | |
647 | { | |
648 | char *path1, *path2, *tmp; | |
649 | int pflag, cmdnum, i; | |
650 | unsigned long n_arg; | |
651 | Attrib a, *aa; | |
652 | char path_buf[MAXPATHLEN]; | |
653 | int err = 0; | |
654 | glob_t g; | |
655 | ||
656 | path1 = path2 = NULL; | |
657 | cmdnum = parse_args(&cmd, &pflag, &n_arg, &path1, &path2); | |
658 | ||
659 | memset(&g, 0, sizeof(g)); | |
660 | ||
661 | /* Perform command */ | |
662 | switch (cmdnum) { | |
663 | case -1: | |
664 | break; | |
665 | case I_GET: | |
666 | err = process_get(in, out, path1, path2, *pwd, pflag); | |
667 | break; | |
668 | case I_PUT: | |
669 | err = process_put(in, out, path1, path2, *pwd, pflag); | |
670 | break; | |
671 | case I_RENAME: | |
672 | path1 = make_absolute(path1, *pwd); | |
673 | path2 = make_absolute(path2, *pwd); | |
674 | err = do_rename(in, out, path1, path2); | |
675 | break; | |
676 | case I_SYMLINK: | |
677 | if (version < 3) { | |
678 | error("The server (version %d) does not support " | |
679 | "this operation", version); | |
680 | err = -1; | |
681 | } else { | |
682 | path2 = make_absolute(path2, *pwd); | |
683 | err = do_symlink(in, out, path1, path2); | |
684 | } | |
685 | break; | |
686 | case I_RM: | |
687 | path1 = make_absolute(path1, *pwd); | |
688 | remote_glob(in, out, path1, GLOB_NOCHECK, NULL, &g); | |
689 | for(i = 0; g.gl_pathv[i]; i++) { | |
690 | printf("Removing %s\n", g.gl_pathv[i]); | |
691 | if (do_rm(in, out, g.gl_pathv[i]) == -1) | |
692 | err = -1; | |
693 | } | |
694 | break; | |
695 | case I_MKDIR: | |
696 | path1 = make_absolute(path1, *pwd); | |
697 | attrib_clear(&a); | |
698 | a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS; | |
699 | a.perm = 0777; | |
700 | err = do_mkdir(in, out, path1, &a); | |
701 | break; | |
702 | case I_RMDIR: | |
703 | path1 = make_absolute(path1, *pwd); | |
704 | err = do_rmdir(in, out, path1); | |
705 | break; | |
706 | case I_CHDIR: | |
707 | path1 = make_absolute(path1, *pwd); | |
708 | if ((tmp = do_realpath(in, out, path1)) == NULL) { | |
709 | err = 1; | |
710 | break; | |
711 | } | |
712 | if ((aa = do_stat(in, out, tmp, 0)) == NULL) { | |
713 | xfree(tmp); | |
714 | err = 1; | |
715 | break; | |
716 | } | |
717 | if (!(aa->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)) { | |
718 | error("Can't change directory: Can't check target"); | |
719 | xfree(tmp); | |
720 | err = 1; | |
721 | break; | |
722 | } | |
723 | if (!S_ISDIR(aa->perm)) { | |
724 | error("Can't change directory: \"%s\" is not " | |
725 | "a directory", tmp); | |
726 | xfree(tmp); | |
727 | err = 1; | |
728 | break; | |
729 | } | |
730 | xfree(*pwd); | |
731 | *pwd = tmp; | |
732 | break; | |
733 | case I_LS: | |
734 | if (!path1) { | |
735 | do_ls(in, out, *pwd); | |
736 | break; | |
737 | } | |
738 | path1 = make_absolute(path1, *pwd); | |
739 | if ((tmp = do_realpath(in, out, path1)) == NULL) | |
740 | break; | |
741 | xfree(path1); | |
742 | path1 = tmp; | |
743 | if ((aa = do_stat(in, out, path1, 0)) == NULL) | |
744 | break; | |
745 | if ((aa->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) && | |
746 | !S_ISDIR(aa->perm)) { | |
747 | error("Can't ls: \"%s\" is not a directory", path1); | |
748 | break; | |
749 | } | |
750 | do_ls(in, out, path1); | |
751 | break; | |
752 | case I_LCHDIR: | |
753 | if (chdir(path1) == -1) { | |
754 | error("Couldn't change local directory to " | |
755 | "\"%s\": %s", path1, strerror(errno)); | |
756 | err = 1; | |
757 | } | |
758 | break; | |
759 | case I_LMKDIR: | |
760 | if (mkdir(path1, 0777) == -1) { | |
761 | error("Couldn't create local directory " | |
762 | "\"%s\": %s", path1, strerror(errno)); | |
763 | err = 1; | |
764 | } | |
765 | break; | |
766 | case I_LLS: | |
767 | local_do_ls(cmd); | |
768 | break; | |
769 | case I_SHELL: | |
770 | local_do_shell(cmd); | |
771 | break; | |
772 | case I_LUMASK: | |
773 | umask(n_arg); | |
774 | printf("Local umask: %03lo\n", n_arg); | |
775 | break; | |
776 | case I_CHMOD: | |
777 | path1 = make_absolute(path1, *pwd); | |
778 | attrib_clear(&a); | |
779 | a.flags |= SSH2_FILEXFER_ATTR_PERMISSIONS; | |
780 | a.perm = n_arg; | |
781 | remote_glob(in, out, path1, GLOB_NOCHECK, NULL, &g); | |
782 | for(i = 0; g.gl_pathv[i]; i++) { | |
783 | printf("Changing mode on %s\n", g.gl_pathv[i]); | |
784 | do_setstat(in, out, g.gl_pathv[i], &a); | |
785 | } | |
786 | break; | |
787 | case I_CHOWN: | |
788 | path1 = make_absolute(path1, *pwd); | |
789 | remote_glob(in, out, path1, GLOB_NOCHECK, NULL, &g); | |
790 | for(i = 0; g.gl_pathv[i]; i++) { | |
791 | if (!(aa = do_stat(in, out, g.gl_pathv[i], 0))) | |
792 | continue; | |
793 | if (!(aa->flags & SSH2_FILEXFER_ATTR_UIDGID)) { | |
794 | error("Can't get current ownership of " | |
795 | "remote file \"%s\"", g.gl_pathv[i]); | |
796 | continue; | |
797 | } | |
798 | printf("Changing owner on %s\n", g.gl_pathv[i]); | |
799 | aa->flags &= SSH2_FILEXFER_ATTR_UIDGID; | |
800 | aa->uid = n_arg; | |
801 | do_setstat(in, out, g.gl_pathv[i], aa); | |
802 | } | |
803 | break; | |
804 | case I_CHGRP: | |
805 | path1 = make_absolute(path1, *pwd); | |
806 | remote_glob(in, out, path1, GLOB_NOCHECK, NULL, &g); | |
807 | for(i = 0; g.gl_pathv[i]; i++) { | |
808 | if (!(aa = do_stat(in, out, g.gl_pathv[i], 0))) | |
809 | continue; | |
810 | if (!(aa->flags & SSH2_FILEXFER_ATTR_UIDGID)) { | |
811 | error("Can't get current ownership of " | |
812 | "remote file \"%s\"", g.gl_pathv[i]); | |
813 | continue; | |
814 | } | |
815 | printf("Changing group on %s\n", g.gl_pathv[i]); | |
816 | aa->flags &= SSH2_FILEXFER_ATTR_UIDGID; | |
817 | aa->gid = n_arg; | |
818 | do_setstat(in, out, g.gl_pathv[i], aa); | |
819 | } | |
820 | break; | |
821 | case I_PWD: | |
822 | printf("Remote working directory: %s\n", *pwd); | |
823 | break; | |
824 | case I_LPWD: | |
825 | if (!getcwd(path_buf, sizeof(path_buf))) | |
826 | error("Couldn't get local cwd: %s", | |
827 | strerror(errno)); | |
828 | else | |
829 | printf("Local working directory: %s\n", | |
830 | path_buf); | |
831 | break; | |
832 | case I_QUIT: | |
833 | return(-1); | |
834 | case I_HELP: | |
835 | help(); | |
836 | break; | |
837 | case I_VERSION: | |
838 | printf("SFTP protocol version %d\n", version); | |
839 | break; | |
840 | default: | |
841 | fatal("%d is not implemented", cmdnum); | |
842 | } | |
843 | ||
844 | if (g.gl_pathc) | |
845 | globfree(&g); | |
846 | if (path1) | |
847 | xfree(path1); | |
848 | if (path2) | |
849 | xfree(path2); | |
850 | ||
851 | /* If an error occurs in batch mode we should abort. */ | |
852 | if (infile != stdin && err > 0) | |
853 | return -1; | |
854 | ||
855 | return(0); | |
856 | } | |
857 | ||
858 | void | |
859 | interactive_loop(int fd_in, int fd_out, char *file1, char *file2) | |
860 | { | |
861 | char *pwd; | |
862 | char *dir = NULL; | |
863 | char cmd[2048]; | |
864 | ||
865 | version = do_init(fd_in, fd_out); | |
866 | if (version == -1) | |
867 | fatal("Couldn't initialise connection to server"); | |
868 | ||
869 | pwd = do_realpath(fd_in, fd_out, "."); | |
870 | if (pwd == NULL) | |
871 | fatal("Need cwd"); | |
872 | ||
873 | if (file1 != NULL) { | |
874 | dir = xstrdup(file1); | |
875 | dir = make_absolute(dir, pwd); | |
876 | ||
877 | if (remote_is_dir(fd_in, fd_out, dir) && file2 == NULL) { | |
878 | printf("Changing to: %s\n", dir); | |
879 | snprintf(cmd, sizeof cmd, "cd \"%s\"", dir); | |
880 | parse_dispatch_command(fd_in, fd_out, cmd, &pwd); | |
881 | } else { | |
882 | if (file2 == NULL) | |
883 | snprintf(cmd, sizeof cmd, "get %s", dir); | |
884 | else | |
885 | snprintf(cmd, sizeof cmd, "get %s %s", dir, | |
886 | file2); | |
887 | ||
888 | parse_dispatch_command(fd_in, fd_out, cmd, &pwd); | |
889 | return; | |
890 | } | |
891 | } | |
892 | #if HAVE_SETVBUF | |
893 | setvbuf(stdout, NULL, _IOLBF, 0); | |
894 | setvbuf(infile, NULL, _IOLBF, 0); | |
895 | #else | |
896 | setlinebuf(stdout); | |
897 | setlinebuf(infile); | |
898 | #endif | |
899 | ||
900 | for(;;) { | |
901 | char *cp; | |
902 | ||
903 | printf("sftp> "); | |
904 | ||
905 | /* XXX: use libedit */ | |
906 | if (fgets(cmd, sizeof(cmd), infile) == NULL) { | |
907 | printf("\n"); | |
908 | break; | |
909 | } else if (infile != stdin) /* Bluff typing */ | |
910 | printf("%s", cmd); | |
911 | ||
912 | cp = strrchr(cmd, '\n'); | |
913 | if (cp) | |
914 | *cp = '\0'; | |
915 | ||
916 | if (parse_dispatch_command(fd_in, fd_out, cmd, &pwd)) | |
917 | break; | |
918 | } | |
919 | xfree(pwd); | |
920 | } |