4c7f0d61 |
1 | /* |
2 | * psftp.c: front end for PSFTP. |
3 | */ |
4 | |
4a8fc3c4 |
5 | #include <windows.h> |
6 | |
4c7f0d61 |
7 | #include <stdio.h> |
8 | #include <stdlib.h> |
f9e162aa |
9 | #include <stdarg.h> |
4c7f0d61 |
10 | #include <assert.h> |
d92624dc |
11 | #include <limits.h> |
4c7f0d61 |
12 | |
4a8fc3c4 |
13 | #define PUTTY_DO_GLOBALS |
14 | #include "putty.h" |
15 | #include "storage.h" |
16 | #include "ssh.h" |
4c7f0d61 |
17 | #include "sftp.h" |
18 | #include "int64.h" |
19 | |
5471d09a |
20 | /* |
21 | * Since SFTP is a request-response oriented protocol, it requires |
22 | * no buffer management: when we send data, we stop and wait for an |
23 | * acknowledgement _anyway_, and so we can't possibly overfill our |
24 | * send buffer. |
25 | */ |
26 | |
4c7f0d61 |
27 | /* ---------------------------------------------------------------------- |
28 | * String handling routines. |
29 | */ |
30 | |
32874aea |
31 | char *dupstr(char *s) |
32 | { |
4c7f0d61 |
33 | int len = strlen(s); |
32874aea |
34 | char *p = smalloc(len + 1); |
4c7f0d61 |
35 | strcpy(p, s); |
36 | return p; |
37 | } |
38 | |
f9e162aa |
39 | /* Allocate the concatenation of N strings. Terminate arg list with NULL. */ |
32874aea |
40 | char *dupcat(char *s1, ...) |
41 | { |
f9e162aa |
42 | int len; |
43 | char *p, *q, *sn; |
44 | va_list ap; |
45 | |
46 | len = strlen(s1); |
47 | va_start(ap, s1); |
48 | while (1) { |
49 | sn = va_arg(ap, char *); |
50 | if (!sn) |
51 | break; |
52 | len += strlen(sn); |
53 | } |
54 | va_end(ap); |
55 | |
32874aea |
56 | p = smalloc(len + 1); |
f9e162aa |
57 | strcpy(p, s1); |
58 | q = p + strlen(p); |
59 | |
60 | va_start(ap, s1); |
61 | while (1) { |
62 | sn = va_arg(ap, char *); |
63 | if (!sn) |
64 | break; |
65 | strcpy(q, sn); |
66 | q += strlen(q); |
67 | } |
68 | va_end(ap); |
69 | |
70 | return p; |
71 | } |
72 | |
4c7f0d61 |
73 | /* ---------------------------------------------------------------------- |
74 | * sftp client state. |
75 | */ |
76 | |
77 | char *pwd, *homedir; |
78 | |
79 | /* ---------------------------------------------------------------------- |
80 | * Higher-level helper functions used in commands. |
81 | */ |
82 | |
83 | /* |
f9e162aa |
84 | * Attempt to canonify a pathname starting from the pwd. If |
85 | * canonification fails, at least fall back to returning a _valid_ |
86 | * pathname (though it may be ugly, eg /home/simon/../foobar). |
4c7f0d61 |
87 | */ |
32874aea |
88 | char *canonify(char *name) |
89 | { |
f9e162aa |
90 | char *fullname, *canonname; |
4a8fc3c4 |
91 | |
f9e162aa |
92 | if (name[0] == '/') { |
93 | fullname = dupstr(name); |
94 | } else { |
4a8fc3c4 |
95 | char *slash; |
32874aea |
96 | if (pwd[strlen(pwd) - 1] == '/') |
4a8fc3c4 |
97 | slash = ""; |
98 | else |
99 | slash = "/"; |
100 | fullname = dupcat(pwd, slash, name, NULL); |
f9e162aa |
101 | } |
4a8fc3c4 |
102 | |
103 | canonname = fxp_realpath(fullname); |
104 | |
f9e162aa |
105 | if (canonname) { |
106 | sfree(fullname); |
107 | return canonname; |
50d7e054 |
108 | } else { |
32874aea |
109 | /* |
110 | * Attempt number 2. Some FXP_REALPATH implementations |
111 | * (glibc-based ones, in particular) require the _whole_ |
112 | * path to point to something that exists, whereas others |
113 | * (BSD-based) only require all but the last component to |
114 | * exist. So if the first call failed, we should strip off |
115 | * everything from the last slash onwards and try again, |
116 | * then put the final component back on. |
117 | * |
118 | * Special cases: |
119 | * |
120 | * - if the last component is "/." or "/..", then we don't |
121 | * bother trying this because there's no way it can work. |
122 | * |
123 | * - if the thing actually ends with a "/", we remove it |
124 | * before we start. Except if the string is "/" itself |
125 | * (although I can't see why we'd have got here if so, |
126 | * because surely "/" would have worked the first |
127 | * time?), in which case we don't bother. |
128 | * |
129 | * - if there's no slash in the string at all, give up in |
130 | * confusion (we expect at least one because of the way |
131 | * we constructed the string). |
132 | */ |
133 | |
134 | int i; |
135 | char *returnname; |
136 | |
137 | i = strlen(fullname); |
138 | if (i > 2 && fullname[i - 1] == '/') |
139 | fullname[--i] = '\0'; /* strip trailing / unless at pos 0 */ |
140 | while (i > 0 && fullname[--i] != '/'); |
141 | |
142 | /* |
143 | * Give up on special cases. |
144 | */ |
145 | if (fullname[i] != '/' || /* no slash at all */ |
146 | !strcmp(fullname + i, "/.") || /* ends in /. */ |
147 | !strcmp(fullname + i, "/..") || /* ends in /.. */ |
148 | !strcmp(fullname, "/")) { |
149 | return fullname; |
150 | } |
151 | |
152 | /* |
153 | * Now i points at the slash. Deal with the final special |
154 | * case i==0 (ie the whole path was "/nonexistentfile"). |
155 | */ |
156 | fullname[i] = '\0'; /* separate the string */ |
157 | if (i == 0) { |
158 | canonname = fxp_realpath("/"); |
159 | } else { |
160 | canonname = fxp_realpath(fullname); |
161 | } |
162 | |
163 | if (!canonname) |
164 | return fullname; /* even that failed; give up */ |
165 | |
166 | /* |
167 | * We have a canonical name for all but the last path |
168 | * component. Concatenate the last component and return. |
169 | */ |
170 | returnname = dupcat(canonname, |
171 | canonname[strlen(canonname) - 1] == |
172 | '/' ? "" : "/", fullname + i + 1, NULL); |
173 | sfree(fullname); |
174 | sfree(canonname); |
175 | return returnname; |
50d7e054 |
176 | } |
4c7f0d61 |
177 | } |
178 | |
179 | /* ---------------------------------------------------------------------- |
180 | * Actual sftp commands. |
181 | */ |
182 | struct sftp_command { |
183 | char **words; |
184 | int nwords, wordssize; |
32874aea |
185 | int (*obey) (struct sftp_command *); /* returns <0 to quit */ |
4c7f0d61 |
186 | }; |
187 | |
32874aea |
188 | int sftp_cmd_null(struct sftp_command *cmd) |
189 | { |
4c7f0d61 |
190 | return 0; |
191 | } |
192 | |
32874aea |
193 | int sftp_cmd_unknown(struct sftp_command *cmd) |
194 | { |
4c7f0d61 |
195 | printf("psftp: unknown command \"%s\"\n", cmd->words[0]); |
196 | return 0; |
197 | } |
198 | |
32874aea |
199 | int sftp_cmd_quit(struct sftp_command *cmd) |
200 | { |
4c7f0d61 |
201 | return -1; |
202 | } |
203 | |
204 | /* |
205 | * List a directory. If no arguments are given, list pwd; otherwise |
206 | * list the directory given in words[1]. |
207 | */ |
32874aea |
208 | static int sftp_ls_compare(const void *av, const void *bv) |
209 | { |
210 | const struct fxp_name *a = (const struct fxp_name *) av; |
211 | const struct fxp_name *b = (const struct fxp_name *) bv; |
4c7f0d61 |
212 | return strcmp(a->filename, b->filename); |
213 | } |
32874aea |
214 | int sftp_cmd_ls(struct sftp_command *cmd) |
215 | { |
4c7f0d61 |
216 | struct fxp_handle *dirh; |
217 | struct fxp_names *names; |
218 | struct fxp_name *ournames; |
219 | int nnames, namesize; |
220 | char *dir, *cdir; |
221 | int i; |
222 | |
223 | if (cmd->nwords < 2) |
224 | dir = "."; |
225 | else |
226 | dir = cmd->words[1]; |
227 | |
228 | cdir = canonify(dir); |
229 | if (!cdir) { |
230 | printf("%s: %s\n", dir, fxp_error()); |
231 | return 0; |
232 | } |
233 | |
234 | printf("Listing directory %s\n", cdir); |
235 | |
236 | dirh = fxp_opendir(cdir); |
237 | if (dirh == NULL) { |
238 | printf("Unable to open %s: %s\n", dir, fxp_error()); |
239 | } else { |
240 | nnames = namesize = 0; |
241 | ournames = NULL; |
242 | |
243 | while (1) { |
244 | |
245 | names = fxp_readdir(dirh); |
246 | if (names == NULL) { |
247 | if (fxp_error_type() == SSH_FX_EOF) |
248 | break; |
249 | printf("Reading directory %s: %s\n", dir, fxp_error()); |
250 | break; |
251 | } |
252 | if (names->nnames == 0) { |
253 | fxp_free_names(names); |
254 | break; |
255 | } |
256 | |
257 | if (nnames + names->nnames >= namesize) { |
258 | namesize += names->nnames + 128; |
32874aea |
259 | ournames = |
260 | srealloc(ournames, namesize * sizeof(*ournames)); |
4c7f0d61 |
261 | } |
262 | |
263 | for (i = 0; i < names->nnames; i++) |
264 | ournames[nnames++] = names->names[i]; |
265 | |
266 | names->nnames = 0; /* prevent free_names */ |
267 | fxp_free_names(names); |
268 | } |
269 | fxp_close(dirh); |
270 | |
271 | /* |
272 | * Now we have our filenames. Sort them by actual file |
273 | * name, and then output the longname parts. |
274 | */ |
275 | qsort(ournames, nnames, sizeof(*ournames), sftp_ls_compare); |
276 | |
277 | /* |
278 | * And print them. |
279 | */ |
280 | for (i = 0; i < nnames; i++) |
281 | printf("%s\n", ournames[i].longname); |
282 | } |
283 | |
284 | sfree(cdir); |
285 | |
286 | return 0; |
287 | } |
288 | |
289 | /* |
290 | * Change directories. We do this by canonifying the new name, then |
291 | * trying to OPENDIR it. Only if that succeeds do we set the new pwd. |
292 | */ |
32874aea |
293 | int sftp_cmd_cd(struct sftp_command *cmd) |
294 | { |
4c7f0d61 |
295 | struct fxp_handle *dirh; |
296 | char *dir; |
297 | |
298 | if (cmd->nwords < 2) |
f9e162aa |
299 | dir = dupstr(homedir); |
4c7f0d61 |
300 | else |
301 | dir = canonify(cmd->words[1]); |
302 | |
303 | if (!dir) { |
304 | printf("%s: %s\n", dir, fxp_error()); |
305 | return 0; |
306 | } |
307 | |
308 | dirh = fxp_opendir(dir); |
309 | if (!dirh) { |
310 | printf("Directory %s: %s\n", dir, fxp_error()); |
311 | sfree(dir); |
312 | return 0; |
313 | } |
314 | |
315 | fxp_close(dirh); |
316 | |
317 | sfree(pwd); |
318 | pwd = dir; |
319 | printf("Remote directory is now %s\n", pwd); |
320 | |
321 | return 0; |
322 | } |
323 | |
324 | /* |
d92624dc |
325 | * Get a file and save it at the local end. We have two very |
326 | * similar commands here: `get' and `reget', which differ in that |
327 | * `reget' checks for the existence of the destination file and |
328 | * starts from where a previous aborted transfer left off. |
4c7f0d61 |
329 | */ |
d92624dc |
330 | int sftp_general_get(struct sftp_command *cmd, int restart) |
32874aea |
331 | { |
4c7f0d61 |
332 | struct fxp_handle *fh; |
333 | char *fname, *outfname; |
334 | uint64 offset; |
335 | FILE *fp; |
336 | |
337 | if (cmd->nwords < 2) { |
338 | printf("get: expects a filename\n"); |
339 | return 0; |
340 | } |
341 | |
342 | fname = canonify(cmd->words[1]); |
343 | if (!fname) { |
344 | printf("%s: %s\n", cmd->words[1], fxp_error()); |
345 | return 0; |
346 | } |
347 | outfname = (cmd->nwords == 2 ? cmd->words[1] : cmd->words[2]); |
348 | |
349 | fh = fxp_open(fname, SSH_FXF_READ); |
350 | if (!fh) { |
351 | printf("%s: %s\n", fname, fxp_error()); |
352 | sfree(fname); |
353 | return 0; |
354 | } |
d92624dc |
355 | |
356 | if (restart) { |
357 | fp = fopen(outfname, "rb+"); |
358 | } else { |
359 | fp = fopen(outfname, "wb"); |
360 | } |
361 | |
4c7f0d61 |
362 | if (!fp) { |
363 | printf("local: unable to open %s\n", outfname); |
32874aea |
364 | fxp_close(fh); |
4c7f0d61 |
365 | sfree(fname); |
366 | return 0; |
367 | } |
368 | |
d92624dc |
369 | if (restart) { |
370 | long posn; |
371 | fseek(fp, 0L, SEEK_END); |
372 | posn = ftell(fp); |
373 | printf("reget: restarting at file position %ld\n", posn); |
374 | offset = uint64_make(0, posn); |
375 | } else { |
376 | offset = uint64_make(0, 0); |
377 | } |
4c7f0d61 |
378 | |
d92624dc |
379 | printf("remote:%s => local:%s\n", fname, outfname); |
4c7f0d61 |
380 | |
381 | /* |
382 | * FIXME: we can use FXP_FSTAT here to get the file size, and |
383 | * thus put up a progress bar. |
384 | */ |
385 | while (1) { |
386 | char buffer[4096]; |
387 | int len; |
388 | int wpos, wlen; |
389 | |
390 | len = fxp_read(fh, buffer, offset, sizeof(buffer)); |
32874aea |
391 | if ((len == -1 && fxp_error_type() == SSH_FX_EOF) || len == 0) |
4c7f0d61 |
392 | break; |
393 | if (len == -1) { |
394 | printf("error while reading: %s\n", fxp_error()); |
395 | break; |
396 | } |
32874aea |
397 | |
4c7f0d61 |
398 | wpos = 0; |
399 | while (wpos < len) { |
32874aea |
400 | wlen = fwrite(buffer, 1, len - wpos, fp); |
4c7f0d61 |
401 | if (wlen <= 0) { |
402 | printf("error while writing local file\n"); |
403 | break; |
404 | } |
405 | wpos += wlen; |
406 | } |
407 | if (wpos < len) /* we had an error */ |
408 | break; |
409 | offset = uint64_add32(offset, len); |
410 | } |
411 | |
412 | fclose(fp); |
413 | fxp_close(fh); |
414 | sfree(fname); |
415 | |
416 | return 0; |
417 | } |
d92624dc |
418 | int sftp_cmd_get(struct sftp_command *cmd) |
419 | { |
420 | return sftp_general_get(cmd, 0); |
421 | } |
422 | int sftp_cmd_reget(struct sftp_command *cmd) |
423 | { |
424 | return sftp_general_get(cmd, 1); |
425 | } |
4c7f0d61 |
426 | |
427 | /* |
d92624dc |
428 | * Send a file and store it at the remote end. We have two very |
429 | * similar commands here: `put' and `reput', which differ in that |
430 | * `reput' checks for the existence of the destination file and |
431 | * starts from where a previous aborted transfer left off. |
4c7f0d61 |
432 | */ |
d92624dc |
433 | int sftp_general_put(struct sftp_command *cmd, int restart) |
32874aea |
434 | { |
4c7f0d61 |
435 | struct fxp_handle *fh; |
436 | char *fname, *origoutfname, *outfname; |
437 | uint64 offset; |
438 | FILE *fp; |
439 | |
440 | if (cmd->nwords < 2) { |
441 | printf("put: expects a filename\n"); |
442 | return 0; |
443 | } |
444 | |
445 | fname = cmd->words[1]; |
446 | origoutfname = (cmd->nwords == 2 ? cmd->words[1] : cmd->words[2]); |
447 | outfname = canonify(origoutfname); |
f9e162aa |
448 | if (!outfname) { |
4c7f0d61 |
449 | printf("%s: %s\n", origoutfname, fxp_error()); |
450 | return 0; |
451 | } |
452 | |
453 | fp = fopen(fname, "rb"); |
454 | if (!fp) { |
455 | printf("local: unable to open %s\n", fname); |
4c7f0d61 |
456 | sfree(outfname); |
457 | return 0; |
458 | } |
d92624dc |
459 | if (restart) { |
460 | fh = fxp_open(outfname, |
461 | SSH_FXF_WRITE); |
462 | } else { |
463 | fh = fxp_open(outfname, |
464 | SSH_FXF_WRITE | SSH_FXF_CREAT | SSH_FXF_TRUNC); |
465 | } |
4c7f0d61 |
466 | if (!fh) { |
467 | printf("%s: %s\n", outfname, fxp_error()); |
468 | sfree(outfname); |
469 | return 0; |
470 | } |
471 | |
d92624dc |
472 | if (restart) { |
473 | char decbuf[30]; |
474 | struct fxp_attrs attrs; |
475 | if (!fxp_fstat(fh, &attrs)) { |
476 | printf("read size of %s: %s\n", outfname, fxp_error()); |
477 | sfree(outfname); |
478 | return 0; |
479 | } |
480 | if (!(attrs.flags & SSH_FILEXFER_ATTR_SIZE)) { |
481 | printf("read size of %s: size was not given\n", outfname); |
482 | sfree(outfname); |
483 | return 0; |
484 | } |
485 | offset = attrs.size; |
486 | uint64_decimal(offset, decbuf); |
487 | printf("reput: restarting at file position %s\n", decbuf); |
488 | if (uint64_compare(offset, uint64_make(0, LONG_MAX)) > 0) { |
489 | printf("reput: remote file is larger than we can deal with\n"); |
490 | sfree(outfname); |
491 | return 0; |
492 | } |
493 | if (fseek(fp, offset.lo, SEEK_SET) != 0) |
494 | fseek(fp, 0, SEEK_END); /* *shrug* */ |
495 | } else { |
496 | offset = uint64_make(0, 0); |
497 | } |
4c7f0d61 |
498 | |
d92624dc |
499 | printf("local:%s => remote:%s\n", fname, outfname); |
4c7f0d61 |
500 | |
501 | /* |
502 | * FIXME: we can use FXP_FSTAT here to get the file size, and |
503 | * thus put up a progress bar. |
504 | */ |
505 | while (1) { |
506 | char buffer[4096]; |
507 | int len; |
508 | |
f9e162aa |
509 | len = fread(buffer, 1, sizeof(buffer), fp); |
4c7f0d61 |
510 | if (len == -1) { |
511 | printf("error while reading local file\n"); |
512 | break; |
513 | } else if (len == 0) { |
514 | break; |
515 | } |
f9e162aa |
516 | if (!fxp_write(fh, buffer, offset, len)) { |
4c7f0d61 |
517 | printf("error while writing: %s\n", fxp_error()); |
518 | break; |
519 | } |
520 | offset = uint64_add32(offset, len); |
521 | } |
522 | |
523 | fxp_close(fh); |
524 | fclose(fp); |
525 | sfree(outfname); |
526 | |
527 | return 0; |
528 | } |
d92624dc |
529 | int sftp_cmd_put(struct sftp_command *cmd) |
530 | { |
531 | return sftp_general_put(cmd, 0); |
532 | } |
533 | int sftp_cmd_reput(struct sftp_command *cmd) |
534 | { |
535 | return sftp_general_put(cmd, 1); |
536 | } |
4c7f0d61 |
537 | |
9954aaa3 |
538 | int sftp_cmd_mkdir(struct sftp_command *cmd) |
539 | { |
540 | char *dir; |
541 | int result; |
542 | |
543 | |
544 | if (cmd->nwords < 2) { |
545 | printf("mkdir: expects a directory\n"); |
546 | return 0; |
547 | } |
548 | |
549 | dir = canonify(cmd->words[1]); |
550 | if (!dir) { |
551 | printf("%s: %s\n", dir, fxp_error()); |
552 | return 0; |
553 | } |
554 | |
555 | result = fxp_mkdir(dir); |
556 | if (!result) { |
557 | printf("mkdir %s: %s\n", dir, fxp_error()); |
558 | sfree(dir); |
559 | return 0; |
560 | } |
561 | |
d92624dc |
562 | sfree(dir); |
563 | return 0; |
9954aaa3 |
564 | } |
565 | |
566 | int sftp_cmd_rmdir(struct sftp_command *cmd) |
567 | { |
568 | char *dir; |
569 | int result; |
570 | |
571 | |
572 | if (cmd->nwords < 2) { |
573 | printf("rmdir: expects a directory\n"); |
574 | return 0; |
575 | } |
576 | |
577 | dir = canonify(cmd->words[1]); |
578 | if (!dir) { |
579 | printf("%s: %s\n", dir, fxp_error()); |
580 | return 0; |
581 | } |
582 | |
583 | result = fxp_rmdir(dir); |
584 | if (!result) { |
585 | printf("rmdir %s: %s\n", dir, fxp_error()); |
586 | sfree(dir); |
587 | return 0; |
588 | } |
589 | |
d92624dc |
590 | sfree(dir); |
591 | return 0; |
9954aaa3 |
592 | } |
593 | |
594 | int sftp_cmd_rm(struct sftp_command *cmd) |
595 | { |
596 | char *fname; |
597 | int result; |
598 | |
9954aaa3 |
599 | if (cmd->nwords < 2) { |
600 | printf("rm: expects a filename\n"); |
601 | return 0; |
602 | } |
603 | |
604 | fname = canonify(cmd->words[1]); |
605 | if (!fname) { |
606 | printf("%s: %s\n", fname, fxp_error()); |
607 | return 0; |
608 | } |
609 | |
d92624dc |
610 | result = fxp_remove(fname); |
9954aaa3 |
611 | if (!result) { |
612 | printf("rm %s: %s\n", fname, fxp_error()); |
613 | sfree(fname); |
614 | return 0; |
615 | } |
616 | |
d92624dc |
617 | sfree(fname); |
618 | return 0; |
619 | |
620 | } |
621 | |
622 | int sftp_cmd_mv(struct sftp_command *cmd) |
623 | { |
624 | char *srcfname, *dstfname; |
625 | int result; |
626 | |
627 | if (cmd->nwords < 3) { |
628 | printf("mv: expects two filenames\n"); |
9954aaa3 |
629 | return 0; |
d92624dc |
630 | } |
631 | srcfname = canonify(cmd->words[1]); |
632 | if (!srcfname) { |
633 | printf("%s: %s\n", srcfname, fxp_error()); |
634 | return 0; |
635 | } |
636 | |
637 | dstfname = canonify(cmd->words[2]); |
638 | if (!dstfname) { |
639 | printf("%s: %s\n", dstfname, fxp_error()); |
640 | return 0; |
641 | } |
9954aaa3 |
642 | |
d92624dc |
643 | result = fxp_rename(srcfname, dstfname); |
644 | if (!result) { |
645 | char const *error = fxp_error(); |
646 | struct fxp_attrs attrs; |
647 | |
648 | /* |
649 | * The move might have failed because dstfname pointed at a |
650 | * directory. We check this possibility now: if dstfname |
651 | * _is_ a directory, we re-attempt the move by appending |
652 | * the basename of srcfname to dstfname. |
653 | */ |
654 | result = fxp_stat(dstfname, &attrs); |
655 | if (result && |
656 | (attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) && |
657 | (attrs.permissions & 0040000)) { |
658 | char *p; |
659 | char *newname, *newcanon; |
660 | printf("(destination %s is a directory)\n", dstfname); |
661 | p = srcfname + strlen(srcfname); |
662 | while (p > srcfname && p[-1] != '/') p--; |
663 | newname = dupcat(dstfname, "/", p, NULL); |
664 | newcanon = canonify(newname); |
665 | sfree(newname); |
666 | if (newcanon) { |
667 | sfree(dstfname); |
668 | dstfname = newcanon; |
669 | result = fxp_rename(srcfname, dstfname); |
670 | error = result ? NULL : fxp_error(); |
671 | } |
672 | } |
673 | if (error) { |
674 | printf("mv %s %s: %s\n", srcfname, dstfname, error); |
675 | sfree(srcfname); |
676 | sfree(dstfname); |
677 | return 0; |
678 | } |
679 | } |
680 | printf("%s -> %s\n", srcfname, dstfname); |
681 | |
682 | sfree(srcfname); |
683 | sfree(dstfname); |
684 | return 0; |
9954aaa3 |
685 | } |
686 | |
d92624dc |
687 | int sftp_cmd_chmod(struct sftp_command *cmd) |
688 | { |
689 | char *fname, *mode; |
690 | int result; |
691 | struct fxp_attrs attrs; |
692 | unsigned attrs_clr, attrs_xor, oldperms, newperms; |
693 | |
694 | if (cmd->nwords < 3) { |
695 | printf("chmod: expects a mode specifier and a filename\n"); |
696 | return 0; |
697 | } |
698 | |
699 | /* |
700 | * Attempt to parse the mode specifier in cmd->words[1]. We |
701 | * don't support the full horror of Unix chmod; instead we |
702 | * support a much simpler syntax in which the user can either |
703 | * specify an octal number, or a comma-separated sequence of |
704 | * [ugoa]*[-+=][rwxst]+. (The initial [ugoa] sequence may |
705 | * _only_ be omitted if the only attribute mentioned is t, |
706 | * since all others require a user/group/other specification. |
707 | * Additionally, the s attribute may not be specified for any |
708 | * [ugoa] specifications other than exactly u or exactly g. |
709 | */ |
710 | attrs_clr = attrs_xor = 0; |
711 | mode = cmd->words[1]; |
712 | if (mode[0] >= '0' && mode[0] <= '9') { |
713 | if (mode[strspn(mode, "01234567")]) { |
714 | printf("chmod: numeric file modes should" |
715 | " contain digits 0-7 only\n"); |
716 | return 0; |
717 | } |
718 | attrs_clr = 07777; |
719 | sscanf(mode, "%o", &attrs_xor); |
720 | attrs_xor &= attrs_clr; |
721 | } else { |
722 | while (*mode) { |
723 | char *modebegin = mode; |
724 | unsigned subset, perms; |
725 | int action; |
726 | |
727 | subset = 0; |
728 | while (*mode && *mode != ',' && |
729 | *mode != '+' && *mode != '-' && *mode != '=') { |
730 | switch (*mode) { |
731 | case 'u': subset |= 04700; break; /* setuid, user perms */ |
732 | case 'g': subset |= 02070; break; /* setgid, group perms */ |
733 | case 'o': subset |= 00007; break; /* just other perms */ |
734 | case 'a': subset |= 06777; break; /* all of the above */ |
735 | default: |
736 | printf("chmod: file mode '%.*s' contains unrecognised" |
737 | " user/group/other specifier '%c'\n", |
738 | strcspn(modebegin, ","), modebegin, *mode); |
739 | return 0; |
740 | } |
741 | mode++; |
742 | } |
743 | if (!*mode || *mode == ',') { |
744 | printf("chmod: file mode '%.*s' is incomplete\n", |
745 | strcspn(modebegin, ","), modebegin); |
746 | return 0; |
747 | } |
748 | action = *mode++; |
749 | if (!*mode || *mode == ',') { |
750 | printf("chmod: file mode '%.*s' is incomplete\n", |
751 | strcspn(modebegin, ","), modebegin); |
752 | return 0; |
753 | } |
754 | perms = 0; |
755 | while (*mode && *mode != ',') { |
756 | switch (*mode) { |
757 | case 'r': perms |= 00444; break; |
758 | case 'w': perms |= 00222; break; |
759 | case 'x': perms |= 00111; break; |
760 | case 't': perms |= 01000; subset |= 01000; break; |
761 | case 's': |
762 | if ((subset & 06777) != 04700 && |
763 | (subset & 06777) != 02070) { |
764 | printf("chmod: file mode '%.*s': set[ug]id bit should" |
765 | " be used with exactly one of u or g only\n", |
766 | strcspn(modebegin, ","), modebegin); |
767 | return 0; |
768 | } |
769 | perms |= 06000; |
770 | break; |
771 | default: |
772 | printf("chmod: file mode '%.*s' contains unrecognised" |
773 | " permission specifier '%c'\n", |
774 | strcspn(modebegin, ","), modebegin, *mode); |
775 | return 0; |
776 | } |
777 | mode++; |
778 | } |
779 | if (!(subset & 06777) && (perms &~ subset)) { |
780 | printf("chmod: file mode '%.*s' contains no user/group/other" |
781 | " specifier and permissions other than 't' \n", |
782 | strcspn(modebegin, ","), modebegin, *mode); |
783 | return 0; |
784 | } |
785 | perms &= subset; |
786 | switch (action) { |
787 | case '+': |
788 | attrs_clr |= perms; |
789 | attrs_xor |= perms; |
790 | break; |
791 | case '-': |
792 | attrs_clr |= perms; |
793 | attrs_xor &= ~perms; |
794 | break; |
795 | case '=': |
796 | attrs_clr |= subset; |
797 | attrs_xor |= perms; |
798 | break; |
799 | } |
800 | if (*mode) mode++; /* eat comma */ |
801 | } |
802 | } |
803 | |
804 | fname = canonify(cmd->words[2]); |
805 | if (!fname) { |
806 | printf("%s: %s\n", fname, fxp_error()); |
807 | return 0; |
808 | } |
809 | |
810 | result = fxp_stat(fname, &attrs); |
811 | if (!result || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) { |
812 | printf("get attrs for %s: %s\n", fname, |
813 | result ? "file permissions not provided" : fxp_error()); |
814 | sfree(fname); |
815 | return 0; |
816 | } |
817 | |
818 | attrs.flags = SSH_FILEXFER_ATTR_PERMISSIONS; /* perms _only_ */ |
819 | oldperms = attrs.permissions & 07777; |
820 | attrs.permissions &= ~attrs_clr; |
821 | attrs.permissions ^= attrs_xor; |
822 | newperms = attrs.permissions & 07777; |
823 | |
824 | result = fxp_setstat(fname, attrs); |
825 | |
826 | if (!result) { |
827 | printf("set attrs for %s: %s\n", fname, fxp_error()); |
828 | sfree(fname); |
829 | return 0; |
830 | } |
831 | |
832 | printf("%s: %04o -> %04o\n", fname, oldperms, newperms); |
833 | |
834 | sfree(fname); |
835 | return 0; |
836 | } |
9954aaa3 |
837 | |
4c7f0d61 |
838 | static struct sftp_cmd_lookup { |
839 | char *name; |
32874aea |
840 | int (*obey) (struct sftp_command *); |
4c7f0d61 |
841 | } sftp_lookup[] = { |
842 | /* |
843 | * List of sftp commands. This is binary-searched so it MUST be |
844 | * in ASCII order. |
845 | */ |
32874aea |
846 | { |
847 | "bye", sftp_cmd_quit}, { |
848 | "cd", sftp_cmd_cd}, { |
d92624dc |
849 | "chmod", sftp_cmd_chmod}, { |
850 | "del", sftp_cmd_rm}, { |
851 | "delete", sftp_cmd_rm}, { |
32874aea |
852 | "dir", sftp_cmd_ls}, { |
853 | "exit", sftp_cmd_quit}, { |
854 | "get", sftp_cmd_get}, { |
855 | "ls", sftp_cmd_ls}, { |
9954aaa3 |
856 | "mkdir", sftp_cmd_mkdir}, { |
d92624dc |
857 | "mv", sftp_cmd_mv}, { |
32874aea |
858 | "put", sftp_cmd_put}, { |
d92624dc |
859 | "quit", sftp_cmd_quit}, { |
860 | "reget", sftp_cmd_reget}, { |
861 | "ren", sftp_cmd_mv}, { |
862 | "rename", sftp_cmd_mv}, { |
863 | "reput", sftp_cmd_reput}, { |
864 | "rm", sftp_cmd_rm}, { |
865 | "rmdir", sftp_cmd_rmdir},}; |
4c7f0d61 |
866 | |
867 | /* ---------------------------------------------------------------------- |
868 | * Command line reading and parsing. |
869 | */ |
9954aaa3 |
870 | struct sftp_command *sftp_getcmd(FILE *fp, int mode, int modeflags) |
32874aea |
871 | { |
4c7f0d61 |
872 | char *line; |
873 | int linelen, linesize; |
874 | struct sftp_command *cmd; |
875 | char *p, *q, *r; |
876 | int quoting; |
877 | |
9954aaa3 |
878 | if ((mode == 0) || (modeflags & 1)) { |
879 | printf("psftp> "); |
880 | } |
4c7f0d61 |
881 | fflush(stdout); |
882 | |
883 | cmd = smalloc(sizeof(struct sftp_command)); |
884 | cmd->words = NULL; |
885 | cmd->nwords = 0; |
886 | cmd->wordssize = 0; |
887 | |
888 | line = NULL; |
889 | linesize = linelen = 0; |
890 | while (1) { |
891 | int len; |
892 | char *ret; |
893 | |
894 | linesize += 512; |
895 | line = srealloc(line, linesize); |
9954aaa3 |
896 | ret = fgets(line + linelen, linesize - linelen, fp); |
897 | if (modeflags & 1) { |
898 | printf("%s", ret); |
899 | } |
4c7f0d61 |
900 | |
901 | if (!ret || (linelen == 0 && line[0] == '\0')) { |
902 | cmd->obey = sftp_cmd_quit; |
903 | printf("quit\n"); |
904 | return cmd; /* eof */ |
905 | } |
32874aea |
906 | len = linelen + strlen(line + linelen); |
4c7f0d61 |
907 | linelen += len; |
32874aea |
908 | if (line[linelen - 1] == '\n') { |
4c7f0d61 |
909 | linelen--; |
910 | line[linelen] = '\0'; |
911 | break; |
912 | } |
913 | } |
914 | |
915 | /* |
916 | * Parse the command line into words. The syntax is: |
917 | * - double quotes are removed, but cause spaces within to be |
918 | * treated as non-separating. |
919 | * - a double-doublequote pair is a literal double quote, inside |
920 | * _or_ outside quotes. Like this: |
921 | * |
922 | * firstword "second word" "this has ""quotes"" in" sodoes""this"" |
923 | * |
924 | * becomes |
925 | * |
926 | * >firstword< |
927 | * >second word< |
928 | * >this has "quotes" in< |
929 | * >sodoes"this"< |
930 | */ |
931 | p = line; |
932 | while (*p) { |
933 | /* skip whitespace */ |
32874aea |
934 | while (*p && (*p == ' ' || *p == '\t')) |
935 | p++; |
4c7f0d61 |
936 | /* mark start of word */ |
937 | q = r = p; /* q sits at start, r writes word */ |
938 | quoting = 0; |
939 | while (*p) { |
940 | if (!quoting && (*p == ' ' || *p == '\t')) |
941 | break; /* reached end of word */ |
942 | else if (*p == '"' && p[1] == '"') |
32874aea |
943 | p += 2, *r++ = '"'; /* a literal quote */ |
4c7f0d61 |
944 | else if (*p == '"') |
945 | p++, quoting = !quoting; |
946 | else |
947 | *r++ = *p++; |
948 | } |
32874aea |
949 | if (*p) |
950 | p++; /* skip over the whitespace */ |
4c7f0d61 |
951 | *r = '\0'; |
952 | if (cmd->nwords >= cmd->wordssize) { |
953 | cmd->wordssize = cmd->nwords + 16; |
32874aea |
954 | cmd->words = |
955 | srealloc(cmd->words, cmd->wordssize * sizeof(char *)); |
4c7f0d61 |
956 | } |
957 | cmd->words[cmd->nwords++] = q; |
958 | } |
959 | |
960 | /* |
961 | * Now parse the first word and assign a function. |
962 | */ |
963 | |
964 | if (cmd->nwords == 0) |
965 | cmd->obey = sftp_cmd_null; |
966 | else { |
967 | int i, j, k, cmp; |
968 | |
969 | cmd->obey = sftp_cmd_unknown; |
970 | |
971 | i = -1; |
972 | j = sizeof(sftp_lookup) / sizeof(*sftp_lookup); |
973 | while (j - i > 1) { |
974 | k = (j + i) / 2; |
975 | cmp = strcmp(cmd->words[0], sftp_lookup[k].name); |
976 | if (cmp < 0) |
977 | j = k; |
978 | else if (cmp > 0) |
979 | i = k; |
980 | else { |
981 | cmd->obey = sftp_lookup[k].obey; |
982 | break; |
983 | } |
984 | } |
985 | } |
986 | |
987 | return cmd; |
988 | } |
989 | |
9954aaa3 |
990 | void do_sftp(int mode, int modeflags, char *batchfile) |
32874aea |
991 | { |
9954aaa3 |
992 | FILE *fp; |
993 | |
4c7f0d61 |
994 | /* |
995 | * Do protocol initialisation. |
996 | */ |
997 | if (!fxp_init()) { |
998 | fprintf(stderr, |
32874aea |
999 | "Fatal: unable to initialise SFTP: %s\n", fxp_error()); |
0d694692 |
1000 | return; |
4c7f0d61 |
1001 | } |
1002 | |
1003 | /* |
1004 | * Find out where our home directory is. |
1005 | */ |
f9e162aa |
1006 | homedir = fxp_realpath("."); |
4c7f0d61 |
1007 | if (!homedir) { |
1008 | fprintf(stderr, |
1009 | "Warning: failed to resolve home directory: %s\n", |
1010 | fxp_error()); |
1011 | homedir = dupstr("."); |
1012 | } else { |
1013 | printf("Remote working directory is %s\n", homedir); |
1014 | } |
1015 | pwd = dupstr(homedir); |
1016 | |
9954aaa3 |
1017 | /* |
1018 | * Batch mode? |
4c7f0d61 |
1019 | */ |
9954aaa3 |
1020 | if (mode == 0) { |
1021 | |
1022 | /* ------------------------------------------------------------------ |
1023 | * Now we're ready to do Real Stuff. |
1024 | */ |
1025 | while (1) { |
1026 | struct sftp_command *cmd; |
1027 | cmd = sftp_getcmd(stdin, 0, 0); |
1028 | if (!cmd) |
1029 | break; |
1030 | if (cmd->obey(cmd) < 0) |
1031 | break; |
1032 | } |
1033 | } else { |
1034 | fp = fopen(batchfile, "r"); |
1035 | if (!fp) { |
1036 | printf("Fatal: unable to open %s\n", batchfile); |
1037 | return; |
1038 | } |
1039 | while (1) { |
1040 | struct sftp_command *cmd; |
1041 | cmd = sftp_getcmd(fp, mode, modeflags); |
1042 | if (!cmd) |
1043 | break; |
1044 | if (cmd->obey(cmd) < 0) |
1045 | break; |
1046 | if (fxp_error() != NULL) { |
1047 | if (!(modeflags & 2)) |
1048 | break; |
1049 | } |
1050 | } |
1051 | fclose(fp); |
1052 | |
4c7f0d61 |
1053 | } |
4a8fc3c4 |
1054 | } |
4c7f0d61 |
1055 | |
4a8fc3c4 |
1056 | /* ---------------------------------------------------------------------- |
1057 | * Dirty bits: integration with PuTTY. |
1058 | */ |
1059 | |
1060 | static int verbose = 0; |
1061 | |
1062 | void verify_ssh_host_key(char *host, int port, char *keytype, |
32874aea |
1063 | char *keystr, char *fingerprint) |
1064 | { |
4a8fc3c4 |
1065 | int ret; |
d0718310 |
1066 | HANDLE hin; |
1067 | DWORD savemode, i; |
4a8fc3c4 |
1068 | |
1069 | static const char absentmsg[] = |
32874aea |
1070 | "The server's host key is not cached in the registry. You\n" |
1071 | "have no guarantee that the server is the computer you\n" |
1072 | "think it is.\n" |
1073 | "The server's key fingerprint is:\n" |
1074 | "%s\n" |
1075 | "If you trust this host, enter \"y\" to add the key to\n" |
1076 | "PuTTY's cache and carry on connecting.\n" |
d0718310 |
1077 | "If you want to carry on connecting just once, without\n" |
1078 | "adding the key to the cache, enter \"n\".\n" |
1079 | "If you do not trust this host, press Return to abandon the\n" |
1080 | "connection.\n" |
1081 | "Store key in cache? (y/n) "; |
4a8fc3c4 |
1082 | |
1083 | static const char wrongmsg[] = |
32874aea |
1084 | "WARNING - POTENTIAL SECURITY BREACH!\n" |
1085 | "The server's host key does not match the one PuTTY has\n" |
1086 | "cached in the registry. This means that either the\n" |
1087 | "server administrator has changed the host key, or you\n" |
1088 | "have actually connected to another computer pretending\n" |
1089 | "to be the server.\n" |
1090 | "The new key fingerprint is:\n" |
1091 | "%s\n" |
1092 | "If you were expecting this change and trust the new key,\n" |
d0718310 |
1093 | "enter \"y\" to update PuTTY's cache and continue connecting.\n" |
32874aea |
1094 | "If you want to carry on connecting but without updating\n" |
d0718310 |
1095 | "the cache, enter \"n\".\n" |
32874aea |
1096 | "If you want to abandon the connection completely, press\n" |
1097 | "Return to cancel. Pressing Return is the ONLY guaranteed\n" |
1098 | "safe choice.\n" |
1099 | "Update cached key? (y/n, Return cancels connection) "; |
4a8fc3c4 |
1100 | |
1101 | static const char abandoned[] = "Connection abandoned.\n"; |
1102 | |
1103 | char line[32]; |
1104 | |
1105 | /* |
1106 | * Verify the key against the registry. |
1107 | */ |
1108 | ret = verify_host_key(host, port, keytype, keystr); |
1109 | |
32874aea |
1110 | if (ret == 0) /* success - key matched OK */ |
1111 | return; |
d0718310 |
1112 | |
32874aea |
1113 | if (ret == 2) { /* key was different */ |
1114 | fprintf(stderr, wrongmsg, fingerprint); |
d0718310 |
1115 | fflush(stderr); |
4a8fc3c4 |
1116 | } |
32874aea |
1117 | if (ret == 1) { /* key was absent */ |
1118 | fprintf(stderr, absentmsg, fingerprint); |
d0718310 |
1119 | fflush(stderr); |
1120 | } |
1121 | |
1122 | hin = GetStdHandle(STD_INPUT_HANDLE); |
1123 | GetConsoleMode(hin, &savemode); |
1124 | SetConsoleMode(hin, (savemode | ENABLE_ECHO_INPUT | |
1125 | ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT)); |
1126 | ReadFile(hin, line, sizeof(line) - 1, &i, NULL); |
1127 | SetConsoleMode(hin, savemode); |
1128 | |
1129 | if (line[0] != '\0' && line[0] != '\r' && line[0] != '\n') { |
1130 | if (line[0] == 'y' || line[0] == 'Y') |
32874aea |
1131 | store_host_key(host, port, keytype, keystr); |
d0718310 |
1132 | } else { |
1133 | fprintf(stderr, abandoned); |
1134 | exit(0); |
4a8fc3c4 |
1135 | } |
1136 | } |
1137 | |
1138 | /* |
ca20bfcf |
1139 | * Ask whether the selected cipher is acceptable (since it was |
1140 | * below the configured 'warn' threshold). |
1141 | * cs: 0 = both ways, 1 = client->server, 2 = server->client |
1142 | */ |
1143 | void askcipher(char *ciphername, int cs) |
1144 | { |
1145 | HANDLE hin; |
1146 | DWORD savemode, i; |
1147 | |
1148 | static const char msg[] = |
1149 | "The first %scipher supported by the server is\n" |
1150 | "%s, which is below the configured warning threshold.\n" |
1151 | "Continue with connection? (y/n) "; |
1152 | static const char abandoned[] = "Connection abandoned.\n"; |
1153 | |
1154 | char line[32]; |
1155 | |
1156 | fprintf(stderr, msg, |
1157 | (cs == 0) ? "" : |
1158 | (cs == 1) ? "client-to-server " : |
1159 | "server-to-client ", |
1160 | ciphername); |
1161 | fflush(stderr); |
1162 | |
1163 | hin = GetStdHandle(STD_INPUT_HANDLE); |
1164 | GetConsoleMode(hin, &savemode); |
1165 | SetConsoleMode(hin, (savemode | ENABLE_ECHO_INPUT | |
1166 | ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT)); |
1167 | ReadFile(hin, line, sizeof(line) - 1, &i, NULL); |
1168 | SetConsoleMode(hin, savemode); |
1169 | |
1170 | if (line[0] == 'y' || line[0] == 'Y') { |
1171 | return; |
1172 | } else { |
1173 | fprintf(stderr, abandoned); |
1174 | exit(0); |
1175 | } |
1176 | } |
1177 | |
1178 | /* |
4a8fc3c4 |
1179 | * Print an error message and perform a fatal exit. |
1180 | */ |
1181 | void fatalbox(char *fmt, ...) |
1182 | { |
32874aea |
1183 | char str[0x100]; /* Make the size big enough */ |
4a8fc3c4 |
1184 | va_list ap; |
1185 | va_start(ap, fmt); |
1186 | strcpy(str, "Fatal:"); |
32874aea |
1187 | vsprintf(str + strlen(str), fmt, ap); |
4a8fc3c4 |
1188 | va_end(ap); |
1189 | strcat(str, "\n"); |
1190 | fprintf(stderr, str); |
1191 | |
1192 | exit(1); |
1193 | } |
1194 | void connection_fatal(char *fmt, ...) |
1195 | { |
32874aea |
1196 | char str[0x100]; /* Make the size big enough */ |
4a8fc3c4 |
1197 | va_list ap; |
1198 | va_start(ap, fmt); |
1199 | strcpy(str, "Fatal:"); |
32874aea |
1200 | vsprintf(str + strlen(str), fmt, ap); |
4a8fc3c4 |
1201 | va_end(ap); |
1202 | strcat(str, "\n"); |
1203 | fprintf(stderr, str); |
1204 | |
1205 | exit(1); |
1206 | } |
1207 | |
32874aea |
1208 | void logevent(char *string) |
1209 | { |
1210 | } |
4a8fc3c4 |
1211 | |
32874aea |
1212 | void ldisc_send(char *buf, int len) |
1213 | { |
4a8fc3c4 |
1214 | /* |
1215 | * This is only here because of the calls to ldisc_send(NULL, |
1216 | * 0) in ssh.c. Nothing in PSFTP actually needs to use the |
1217 | * ldisc as an ldisc. So if we get called with any real data, I |
1218 | * want to know about it. |
4c7f0d61 |
1219 | */ |
4a8fc3c4 |
1220 | assert(len == 0); |
1221 | } |
1222 | |
1223 | /* |
1224 | * Be told what socket we're supposed to be using. |
1225 | */ |
1226 | static SOCKET sftp_ssh_socket; |
32874aea |
1227 | char *do_select(SOCKET skt, int startup) |
1228 | { |
4a8fc3c4 |
1229 | if (startup) |
1230 | sftp_ssh_socket = skt; |
1231 | else |
1232 | sftp_ssh_socket = INVALID_SOCKET; |
1233 | return NULL; |
4c7f0d61 |
1234 | } |
4a8fc3c4 |
1235 | extern int select_result(WPARAM, LPARAM); |
1236 | |
1237 | /* |
1238 | * Receive a block of data from the SSH link. Block until all data |
1239 | * is available. |
1240 | * |
1241 | * To do this, we repeatedly call the SSH protocol module, with our |
1242 | * own trap in from_backend() to catch the data that comes back. We |
1243 | * do this until we have enough data. |
1244 | */ |
1245 | |
32874aea |
1246 | static unsigned char *outptr; /* where to put the data */ |
1247 | static unsigned outlen; /* how much data required */ |
4a8fc3c4 |
1248 | static unsigned char *pending = NULL; /* any spare data */ |
32874aea |
1249 | static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */ |
5471d09a |
1250 | int from_backend(int is_stderr, char *data, int datalen) |
32874aea |
1251 | { |
1252 | unsigned char *p = (unsigned char *) data; |
1253 | unsigned len = (unsigned) datalen; |
4a8fc3c4 |
1254 | |
1255 | /* |
1256 | * stderr data is just spouted to local stderr and otherwise |
1257 | * ignored. |
1258 | */ |
1259 | if (is_stderr) { |
1260 | fwrite(data, 1, len, stderr); |
5471d09a |
1261 | return 0; |
4a8fc3c4 |
1262 | } |
1263 | |
1264 | /* |
1265 | * If this is before the real session begins, just return. |
1266 | */ |
1267 | if (!outptr) |
5471d09a |
1268 | return 0; |
4a8fc3c4 |
1269 | |
1270 | if (outlen > 0) { |
32874aea |
1271 | unsigned used = outlen; |
1272 | if (used > len) |
1273 | used = len; |
1274 | memcpy(outptr, p, used); |
1275 | outptr += used; |
1276 | outlen -= used; |
1277 | p += used; |
1278 | len -= used; |
4a8fc3c4 |
1279 | } |
1280 | |
1281 | if (len > 0) { |
32874aea |
1282 | if (pendsize < pendlen + len) { |
1283 | pendsize = pendlen + len + 4096; |
1284 | pending = (pending ? srealloc(pending, pendsize) : |
1285 | smalloc(pendsize)); |
1286 | if (!pending) |
1287 | fatalbox("Out of memory"); |
1288 | } |
1289 | memcpy(pending + pendlen, p, len); |
1290 | pendlen += len; |
4a8fc3c4 |
1291 | } |
5471d09a |
1292 | |
1293 | return 0; |
4a8fc3c4 |
1294 | } |
32874aea |
1295 | int sftp_recvdata(char *buf, int len) |
1296 | { |
1297 | outptr = (unsigned char *) buf; |
4a8fc3c4 |
1298 | outlen = len; |
1299 | |
1300 | /* |
1301 | * See if the pending-input block contains some of what we |
1302 | * need. |
1303 | */ |
1304 | if (pendlen > 0) { |
32874aea |
1305 | unsigned pendused = pendlen; |
1306 | if (pendused > outlen) |
1307 | pendused = outlen; |
4a8fc3c4 |
1308 | memcpy(outptr, pending, pendused); |
32874aea |
1309 | memmove(pending, pending + pendused, pendlen - pendused); |
4a8fc3c4 |
1310 | outptr += pendused; |
1311 | outlen -= pendused; |
32874aea |
1312 | pendlen -= pendused; |
1313 | if (pendlen == 0) { |
1314 | pendsize = 0; |
1315 | sfree(pending); |
1316 | pending = NULL; |
1317 | } |
1318 | if (outlen == 0) |
1319 | return 1; |
4a8fc3c4 |
1320 | } |
1321 | |
1322 | while (outlen > 0) { |
32874aea |
1323 | fd_set readfds; |
4a8fc3c4 |
1324 | |
32874aea |
1325 | FD_ZERO(&readfds); |
1326 | FD_SET(sftp_ssh_socket, &readfds); |
1327 | if (select(1, &readfds, NULL, NULL, NULL) < 0) |
1328 | return 0; /* doom */ |
1329 | select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_READ); |
4a8fc3c4 |
1330 | } |
1331 | |
1332 | return 1; |
1333 | } |
32874aea |
1334 | int sftp_senddata(char *buf, int len) |
1335 | { |
1336 | back->send((unsigned char *) buf, len); |
4a8fc3c4 |
1337 | return 1; |
1338 | } |
1339 | |
1340 | /* |
1341 | * Loop through the ssh connection and authentication process. |
1342 | */ |
32874aea |
1343 | static void ssh_sftp_init(void) |
1344 | { |
4a8fc3c4 |
1345 | if (sftp_ssh_socket == INVALID_SOCKET) |
1346 | return; |
1347 | while (!back->sendok()) { |
32874aea |
1348 | fd_set readfds; |
1349 | FD_ZERO(&readfds); |
1350 | FD_SET(sftp_ssh_socket, &readfds); |
1351 | if (select(1, &readfds, NULL, NULL, NULL) < 0) |
1352 | return; /* doom */ |
1353 | select_result((WPARAM) sftp_ssh_socket, (LPARAM) FD_READ); |
4a8fc3c4 |
1354 | } |
1355 | } |
1356 | |
1357 | static char *password = NULL; |
fa17a66e |
1358 | static int get_line(const char *prompt, char *str, int maxlen, int is_pw) |
4a8fc3c4 |
1359 | { |
1360 | HANDLE hin, hout; |
fa17a66e |
1361 | DWORD savemode, newmode, i; |
4a8fc3c4 |
1362 | |
1363 | if (password) { |
32874aea |
1364 | static int tried_once = 0; |
1365 | |
1366 | if (tried_once) { |
1367 | return 0; |
1368 | } else { |
1369 | strncpy(str, password, maxlen); |
1370 | str[maxlen - 1] = '\0'; |
1371 | tried_once = 1; |
1372 | return 1; |
1373 | } |
4a8fc3c4 |
1374 | } |
1375 | |
1376 | hin = GetStdHandle(STD_INPUT_HANDLE); |
1377 | hout = GetStdHandle(STD_OUTPUT_HANDLE); |
1378 | if (hin == INVALID_HANDLE_VALUE || hout == INVALID_HANDLE_VALUE) { |
1379 | fprintf(stderr, "Cannot get standard input/output handles\n"); |
1380 | exit(1); |
1381 | } |
1382 | |
1383 | GetConsoleMode(hin, &savemode); |
fa17a66e |
1384 | newmode = savemode | ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT; |
1385 | if (is_pw) |
32874aea |
1386 | newmode &= ~ENABLE_ECHO_INPUT; |
fa17a66e |
1387 | else |
32874aea |
1388 | newmode |= ENABLE_ECHO_INPUT; |
fa17a66e |
1389 | SetConsoleMode(hin, newmode); |
4a8fc3c4 |
1390 | |
1391 | WriteFile(hout, prompt, strlen(prompt), &i, NULL); |
32874aea |
1392 | ReadFile(hin, str, maxlen - 1, &i, NULL); |
4a8fc3c4 |
1393 | |
1394 | SetConsoleMode(hin, savemode); |
1395 | |
32874aea |
1396 | if ((int) i > maxlen) |
1397 | i = maxlen - 1; |
1398 | else |
1399 | i = i - 2; |
4a8fc3c4 |
1400 | str[i] = '\0'; |
1401 | |
fa17a66e |
1402 | if (is_pw) |
32874aea |
1403 | WriteFile(hout, "\r\n", 2, &i, NULL); |
4a8fc3c4 |
1404 | |
1405 | return 1; |
1406 | } |
1407 | |
1408 | /* |
1409 | * Initialize the Win$ock driver. |
1410 | */ |
1411 | static void init_winsock(void) |
1412 | { |
1413 | WORD winsock_ver; |
1414 | WSADATA wsadata; |
1415 | |
1416 | winsock_ver = MAKEWORD(1, 1); |
1417 | if (WSAStartup(winsock_ver, &wsadata)) { |
1418 | fprintf(stderr, "Unable to initialise WinSock"); |
1419 | exit(1); |
1420 | } |
32874aea |
1421 | if (LOBYTE(wsadata.wVersion) != 1 || HIBYTE(wsadata.wVersion) != 1) { |
4a8fc3c4 |
1422 | fprintf(stderr, "WinSock version is incompatible with 1.1"); |
1423 | exit(1); |
1424 | } |
1425 | } |
1426 | |
1427 | /* |
1428 | * Short description of parameters. |
1429 | */ |
1430 | static void usage(void) |
1431 | { |
1432 | printf("PuTTY Secure File Transfer (SFTP) client\n"); |
1433 | printf("%s\n", ver); |
1434 | printf("Usage: psftp [options] user@host\n"); |
1435 | printf("Options:\n"); |
9954aaa3 |
1436 | printf(" -b file use specified batchfile\n"); |
1437 | printf(" -bc output batchfile commands\n"); |
1438 | printf(" -be don't stop batchfile processing if errors\n"); |
4a8fc3c4 |
1439 | printf(" -v show verbose messages\n"); |
1440 | printf(" -P port connect to specified port\n"); |
1441 | printf(" -pw passw login with specified password\n"); |
1442 | exit(1); |
1443 | } |
1444 | |
1445 | /* |
1446 | * Main program. Parse arguments etc. |
1447 | */ |
1448 | int main(int argc, char *argv[]) |
1449 | { |
1450 | int i; |
1451 | int portnumber = 0; |
1452 | char *user, *host, *userhost, *realhost; |
1453 | char *err; |
9954aaa3 |
1454 | int mode = 0; |
1455 | int modeflags = 0; |
1456 | char *batchfile = NULL; |
4a8fc3c4 |
1457 | |
1458 | flags = FLAG_STDERR; |
fa17a66e |
1459 | ssh_get_line = &get_line; |
4a8fc3c4 |
1460 | init_winsock(); |
1461 | sk_init(); |
1462 | |
1463 | userhost = user = NULL; |
1464 | |
1465 | for (i = 1; i < argc; i++) { |
1466 | if (argv[i][0] != '-') { |
1467 | if (userhost) |
1468 | usage(); |
1469 | else |
1470 | userhost = dupstr(argv[i]); |
1471 | } else if (strcmp(argv[i], "-v") == 0) { |
1472 | verbose = 1, flags |= FLAG_VERBOSE; |
1473 | } else if (strcmp(argv[i], "-h") == 0 || |
1474 | strcmp(argv[i], "-?") == 0) { |
1475 | usage(); |
32874aea |
1476 | } else if (strcmp(argv[i], "-l") == 0 && i + 1 < argc) { |
4a8fc3c4 |
1477 | user = argv[++i]; |
32874aea |
1478 | } else if (strcmp(argv[i], "-P") == 0 && i + 1 < argc) { |
4a8fc3c4 |
1479 | portnumber = atoi(argv[++i]); |
32874aea |
1480 | } else if (strcmp(argv[i], "-pw") == 0 && i + 1 < argc) { |
4a8fc3c4 |
1481 | password = argv[++i]; |
9954aaa3 |
1482 | } else if (strcmp(argv[i], "-b") == 0 && i + 1 < argc) { |
1483 | mode = 1; |
1484 | batchfile = argv[++i]; |
1485 | } else if (strcmp(argv[i], "-bc") == 0 && i + 1 < argc) { |
1486 | modeflags = modeflags | 1; |
1487 | } else if (strcmp(argv[i], "-be") == 0 && i + 1 < argc) { |
1488 | modeflags = modeflags | 2; |
4a8fc3c4 |
1489 | } else if (strcmp(argv[i], "--") == 0) { |
1490 | i++; |
1491 | break; |
1492 | } else { |
1493 | usage(); |
1494 | } |
1495 | } |
1496 | argc -= i; |
1497 | argv += i; |
1498 | back = NULL; |
1499 | |
1500 | if (argc > 0 || !userhost) |
1501 | usage(); |
1502 | |
1503 | /* Separate host and username */ |
1504 | host = userhost; |
1505 | host = strrchr(host, '@'); |
1506 | if (host == NULL) { |
1507 | host = userhost; |
1508 | } else { |
1509 | *host++ = '\0'; |
1510 | if (user) { |
32874aea |
1511 | printf("psftp: multiple usernames specified; using \"%s\"\n", |
1512 | user); |
4a8fc3c4 |
1513 | } else |
1514 | user = userhost; |
1515 | } |
1516 | |
1517 | /* Try to load settings for this host */ |
1518 | do_defaults(host, &cfg); |
1519 | if (cfg.host[0] == '\0') { |
1520 | /* No settings for this host; use defaults */ |
32874aea |
1521 | do_defaults(NULL, &cfg); |
1522 | strncpy(cfg.host, host, sizeof(cfg.host) - 1); |
1523 | cfg.host[sizeof(cfg.host) - 1] = '\0'; |
4a8fc3c4 |
1524 | cfg.port = 22; |
1525 | } |
1526 | |
1527 | /* Set username */ |
1528 | if (user != NULL && user[0] != '\0') { |
32874aea |
1529 | strncpy(cfg.username, user, sizeof(cfg.username) - 1); |
1530 | cfg.username[sizeof(cfg.username) - 1] = '\0'; |
4a8fc3c4 |
1531 | } |
1532 | if (!cfg.username[0]) { |
1533 | printf("login as: "); |
1534 | if (!fgets(cfg.username, sizeof(cfg.username), stdin)) { |
1535 | fprintf(stderr, "psftp: aborting\n"); |
1536 | exit(1); |
1537 | } else { |
1538 | int len = strlen(cfg.username); |
32874aea |
1539 | if (cfg.username[len - 1] == '\n') |
1540 | cfg.username[len - 1] = '\0'; |
4a8fc3c4 |
1541 | } |
1542 | } |
1543 | |
1544 | if (cfg.protocol != PROT_SSH) |
1545 | cfg.port = 22; |
1546 | |
1547 | if (portnumber) |
1548 | cfg.port = portnumber; |
1549 | |
1550 | /* SFTP uses SSH2 by default always */ |
1551 | cfg.sshprot = 2; |
1552 | |
1553 | /* Set up subsystem name. FIXME: fudge for SSH1. */ |
1554 | strcpy(cfg.remote_cmd, "sftp"); |
1555 | cfg.ssh_subsys = TRUE; |
1556 | cfg.nopty = TRUE; |
1557 | |
1558 | back = &ssh_backend; |
1559 | |
1560 | err = back->init(cfg.host, cfg.port, &realhost); |
1561 | if (err != NULL) { |
1562 | fprintf(stderr, "ssh_init: %s", err); |
1563 | return 1; |
1564 | } |
1565 | ssh_sftp_init(); |
1566 | if (verbose && realhost != NULL) |
1567 | printf("Connected to %s\n", realhost); |
4c7f0d61 |
1568 | |
9954aaa3 |
1569 | do_sftp(mode, modeflags, batchfile); |
4a8fc3c4 |
1570 | |
1571 | if (back != NULL && back->socket() != NULL) { |
1572 | char ch; |
1573 | back->special(TS_EOF); |
1574 | sftp_recvdata(&ch, 1); |
1575 | } |
1576 | WSACleanup(); |
1577 | random_save_seed(); |
1578 | |
4c7f0d61 |
1579 | return 0; |
1580 | } |