4c7f0d61 |
1 | /* |
2 | * psftp.c: front end for PSFTP. |
3 | */ |
4 | |
5 | #include <stdio.h> |
6 | #include <stdlib.h> |
f9e162aa |
7 | #include <stdarg.h> |
4c7f0d61 |
8 | #include <assert.h> |
d92624dc |
9 | #include <limits.h> |
4c7f0d61 |
10 | |
4a8fc3c4 |
11 | #define PUTTY_DO_GLOBALS |
12 | #include "putty.h" |
d6cc41e6 |
13 | #include "psftp.h" |
4a8fc3c4 |
14 | #include "storage.h" |
15 | #include "ssh.h" |
4c7f0d61 |
16 | #include "sftp.h" |
17 | #include "int64.h" |
18 | |
5471d09a |
19 | /* |
20 | * Since SFTP is a request-response oriented protocol, it requires |
21 | * no buffer management: when we send data, we stop and wait for an |
22 | * acknowledgement _anyway_, and so we can't possibly overfill our |
23 | * send buffer. |
24 | */ |
25 | |
fa3db767 |
26 | static int psftp_connect(char *userhost, char *user, int portnumber); |
07534184 |
27 | static int do_sftp_init(void); |
679539d7 |
28 | void do_sftp_cleanup(); |
fa3db767 |
29 | |
4c7f0d61 |
30 | /* ---------------------------------------------------------------------- |
4c7f0d61 |
31 | * sftp client state. |
32 | */ |
33 | |
34 | char *pwd, *homedir; |
6b78788a |
35 | static Backend *back; |
36 | static void *backhandle; |
3ea863a3 |
37 | static Config cfg; |
4c7f0d61 |
38 | |
39 | /* ---------------------------------------------------------------------- |
40 | * Higher-level helper functions used in commands. |
41 | */ |
42 | |
43 | /* |
f9e162aa |
44 | * Attempt to canonify a pathname starting from the pwd. If |
45 | * canonification fails, at least fall back to returning a _valid_ |
46 | * pathname (though it may be ugly, eg /home/simon/../foobar). |
4c7f0d61 |
47 | */ |
32874aea |
48 | char *canonify(char *name) |
49 | { |
f9e162aa |
50 | char *fullname, *canonname; |
1bc24185 |
51 | struct sftp_packet *pktin; |
52 | struct sftp_request *req, *rreq; |
4a8fc3c4 |
53 | |
f9e162aa |
54 | if (name[0] == '/') { |
55 | fullname = dupstr(name); |
56 | } else { |
4a8fc3c4 |
57 | char *slash; |
32874aea |
58 | if (pwd[strlen(pwd) - 1] == '/') |
4a8fc3c4 |
59 | slash = ""; |
60 | else |
61 | slash = "/"; |
62 | fullname = dupcat(pwd, slash, name, NULL); |
f9e162aa |
63 | } |
4a8fc3c4 |
64 | |
1bc24185 |
65 | sftp_register(req = fxp_realpath_send(fullname)); |
66 | rreq = sftp_find_request(pktin = sftp_recv()); |
67 | assert(rreq == req); |
7b7de4f4 |
68 | canonname = fxp_realpath_recv(pktin, rreq); |
4a8fc3c4 |
69 | |
f9e162aa |
70 | if (canonname) { |
71 | sfree(fullname); |
72 | return canonname; |
50d7e054 |
73 | } else { |
32874aea |
74 | /* |
75 | * Attempt number 2. Some FXP_REALPATH implementations |
76 | * (glibc-based ones, in particular) require the _whole_ |
77 | * path to point to something that exists, whereas others |
78 | * (BSD-based) only require all but the last component to |
79 | * exist. So if the first call failed, we should strip off |
80 | * everything from the last slash onwards and try again, |
81 | * then put the final component back on. |
82 | * |
83 | * Special cases: |
84 | * |
85 | * - if the last component is "/." or "/..", then we don't |
86 | * bother trying this because there's no way it can work. |
87 | * |
88 | * - if the thing actually ends with a "/", we remove it |
89 | * before we start. Except if the string is "/" itself |
90 | * (although I can't see why we'd have got here if so, |
91 | * because surely "/" would have worked the first |
92 | * time?), in which case we don't bother. |
93 | * |
94 | * - if there's no slash in the string at all, give up in |
95 | * confusion (we expect at least one because of the way |
96 | * we constructed the string). |
97 | */ |
98 | |
99 | int i; |
100 | char *returnname; |
101 | |
102 | i = strlen(fullname); |
103 | if (i > 2 && fullname[i - 1] == '/') |
104 | fullname[--i] = '\0'; /* strip trailing / unless at pos 0 */ |
105 | while (i > 0 && fullname[--i] != '/'); |
106 | |
107 | /* |
108 | * Give up on special cases. |
109 | */ |
110 | if (fullname[i] != '/' || /* no slash at all */ |
111 | !strcmp(fullname + i, "/.") || /* ends in /. */ |
112 | !strcmp(fullname + i, "/..") || /* ends in /.. */ |
113 | !strcmp(fullname, "/")) { |
114 | return fullname; |
115 | } |
116 | |
117 | /* |
118 | * Now i points at the slash. Deal with the final special |
119 | * case i==0 (ie the whole path was "/nonexistentfile"). |
120 | */ |
121 | fullname[i] = '\0'; /* separate the string */ |
122 | if (i == 0) { |
1bc24185 |
123 | sftp_register(req = fxp_realpath_send("/")); |
32874aea |
124 | } else { |
1bc24185 |
125 | sftp_register(req = fxp_realpath_send(fullname)); |
32874aea |
126 | } |
1bc24185 |
127 | rreq = sftp_find_request(pktin = sftp_recv()); |
128 | assert(rreq == req); |
7b7de4f4 |
129 | canonname = fxp_realpath_recv(pktin, rreq); |
32874aea |
130 | |
131 | if (!canonname) |
132 | return fullname; /* even that failed; give up */ |
133 | |
134 | /* |
135 | * We have a canonical name for all but the last path |
136 | * component. Concatenate the last component and return. |
137 | */ |
138 | returnname = dupcat(canonname, |
139 | canonname[strlen(canonname) - 1] == |
140 | '/' ? "" : "/", fullname + i + 1, NULL); |
141 | sfree(fullname); |
142 | sfree(canonname); |
143 | return returnname; |
50d7e054 |
144 | } |
4c7f0d61 |
145 | } |
146 | |
dcf8495c |
147 | /* |
148 | * Return a pointer to the portion of str that comes after the last |
149 | * slash (or backslash or colon, if `local' is TRUE). |
150 | */ |
151 | static char *stripslashes(char *str, int local) |
152 | { |
153 | char *p; |
154 | |
155 | if (local) { |
156 | p = strchr(str, ':'); |
157 | if (p) str = p+1; |
158 | } |
159 | |
160 | p = strrchr(str, '/'); |
161 | if (p) str = p+1; |
162 | |
163 | if (local) { |
164 | p = strrchr(str, '\\'); |
165 | if (p) str = p+1; |
166 | } |
167 | |
168 | return str; |
169 | } |
170 | |
4c7f0d61 |
171 | /* ---------------------------------------------------------------------- |
172 | * Actual sftp commands. |
173 | */ |
174 | struct sftp_command { |
175 | char **words; |
176 | int nwords, wordssize; |
32874aea |
177 | int (*obey) (struct sftp_command *); /* returns <0 to quit */ |
4c7f0d61 |
178 | }; |
179 | |
32874aea |
180 | int sftp_cmd_null(struct sftp_command *cmd) |
181 | { |
df49ff19 |
182 | return 1; /* success */ |
4c7f0d61 |
183 | } |
184 | |
32874aea |
185 | int sftp_cmd_unknown(struct sftp_command *cmd) |
186 | { |
4c7f0d61 |
187 | printf("psftp: unknown command \"%s\"\n", cmd->words[0]); |
df49ff19 |
188 | return 0; /* failure */ |
4c7f0d61 |
189 | } |
190 | |
32874aea |
191 | int sftp_cmd_quit(struct sftp_command *cmd) |
192 | { |
4c7f0d61 |
193 | return -1; |
194 | } |
195 | |
196 | /* |
197 | * List a directory. If no arguments are given, list pwd; otherwise |
198 | * list the directory given in words[1]. |
199 | */ |
32874aea |
200 | static int sftp_ls_compare(const void *av, const void *bv) |
201 | { |
7d2c1789 |
202 | const struct fxp_name *const *a = (const struct fxp_name *const *) av; |
203 | const struct fxp_name *const *b = (const struct fxp_name *const *) bv; |
204 | return strcmp((*a)->filename, (*b)->filename); |
4c7f0d61 |
205 | } |
32874aea |
206 | int sftp_cmd_ls(struct sftp_command *cmd) |
207 | { |
4c7f0d61 |
208 | struct fxp_handle *dirh; |
209 | struct fxp_names *names; |
7d2c1789 |
210 | struct fxp_name **ournames; |
4c7f0d61 |
211 | int nnames, namesize; |
212 | char *dir, *cdir; |
1bc24185 |
213 | struct sftp_packet *pktin; |
214 | struct sftp_request *req, *rreq; |
4c7f0d61 |
215 | int i; |
216 | |
fa3db767 |
217 | if (back == NULL) { |
218 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
219 | return 0; |
220 | } |
221 | |
4c7f0d61 |
222 | if (cmd->nwords < 2) |
223 | dir = "."; |
224 | else |
225 | dir = cmd->words[1]; |
226 | |
227 | cdir = canonify(dir); |
228 | if (!cdir) { |
229 | printf("%s: %s\n", dir, fxp_error()); |
230 | return 0; |
231 | } |
232 | |
233 | printf("Listing directory %s\n", cdir); |
234 | |
1bc24185 |
235 | sftp_register(req = fxp_opendir_send(cdir)); |
236 | rreq = sftp_find_request(pktin = sftp_recv()); |
237 | assert(rreq == req); |
7b7de4f4 |
238 | dirh = fxp_opendir_recv(pktin, rreq); |
1bc24185 |
239 | |
4c7f0d61 |
240 | if (dirh == NULL) { |
241 | printf("Unable to open %s: %s\n", dir, fxp_error()); |
242 | } else { |
243 | nnames = namesize = 0; |
244 | ournames = NULL; |
245 | |
246 | while (1) { |
247 | |
1bc24185 |
248 | sftp_register(req = fxp_readdir_send(dirh)); |
249 | rreq = sftp_find_request(pktin = sftp_recv()); |
250 | assert(rreq == req); |
7b7de4f4 |
251 | names = fxp_readdir_recv(pktin, rreq); |
1bc24185 |
252 | |
4c7f0d61 |
253 | if (names == NULL) { |
254 | if (fxp_error_type() == SSH_FX_EOF) |
255 | break; |
256 | printf("Reading directory %s: %s\n", dir, fxp_error()); |
257 | break; |
258 | } |
259 | if (names->nnames == 0) { |
260 | fxp_free_names(names); |
261 | break; |
262 | } |
263 | |
264 | if (nnames + names->nnames >= namesize) { |
265 | namesize += names->nnames + 128; |
3d88e64d |
266 | ournames = sresize(ournames, namesize, struct fxp_name *); |
4c7f0d61 |
267 | } |
268 | |
269 | for (i = 0; i < names->nnames; i++) |
7d2c1789 |
270 | ournames[nnames++] = fxp_dup_name(&names->names[i]); |
4c7f0d61 |
271 | |
4c7f0d61 |
272 | fxp_free_names(names); |
273 | } |
1bc24185 |
274 | sftp_register(req = fxp_close_send(dirh)); |
275 | rreq = sftp_find_request(pktin = sftp_recv()); |
276 | assert(rreq == req); |
7b7de4f4 |
277 | fxp_close_recv(pktin, rreq); |
4c7f0d61 |
278 | |
279 | /* |
280 | * Now we have our filenames. Sort them by actual file |
281 | * name, and then output the longname parts. |
282 | */ |
283 | qsort(ournames, nnames, sizeof(*ournames), sftp_ls_compare); |
284 | |
285 | /* |
286 | * And print them. |
287 | */ |
7d2c1789 |
288 | for (i = 0; i < nnames; i++) { |
289 | printf("%s\n", ournames[i]->longname); |
290 | fxp_free_name(ournames[i]); |
291 | } |
292 | sfree(ournames); |
4c7f0d61 |
293 | } |
294 | |
295 | sfree(cdir); |
296 | |
df49ff19 |
297 | return 1; |
4c7f0d61 |
298 | } |
299 | |
300 | /* |
301 | * Change directories. We do this by canonifying the new name, then |
302 | * trying to OPENDIR it. Only if that succeeds do we set the new pwd. |
303 | */ |
32874aea |
304 | int sftp_cmd_cd(struct sftp_command *cmd) |
305 | { |
4c7f0d61 |
306 | struct fxp_handle *dirh; |
1bc24185 |
307 | struct sftp_packet *pktin; |
308 | struct sftp_request *req, *rreq; |
4c7f0d61 |
309 | char *dir; |
310 | |
fa3db767 |
311 | if (back == NULL) { |
312 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
313 | return 0; |
314 | } |
315 | |
4c7f0d61 |
316 | if (cmd->nwords < 2) |
f9e162aa |
317 | dir = dupstr(homedir); |
4c7f0d61 |
318 | else |
319 | dir = canonify(cmd->words[1]); |
320 | |
321 | if (!dir) { |
322 | printf("%s: %s\n", dir, fxp_error()); |
323 | return 0; |
324 | } |
325 | |
1bc24185 |
326 | sftp_register(req = fxp_opendir_send(dir)); |
327 | rreq = sftp_find_request(pktin = sftp_recv()); |
328 | assert(rreq == req); |
7b7de4f4 |
329 | dirh = fxp_opendir_recv(pktin, rreq); |
1bc24185 |
330 | |
4c7f0d61 |
331 | if (!dirh) { |
332 | printf("Directory %s: %s\n", dir, fxp_error()); |
333 | sfree(dir); |
334 | return 0; |
335 | } |
336 | |
1bc24185 |
337 | sftp_register(req = fxp_close_send(dirh)); |
338 | rreq = sftp_find_request(pktin = sftp_recv()); |
339 | assert(rreq == req); |
7b7de4f4 |
340 | fxp_close_recv(pktin, rreq); |
4c7f0d61 |
341 | |
342 | sfree(pwd); |
343 | pwd = dir; |
344 | printf("Remote directory is now %s\n", pwd); |
345 | |
df49ff19 |
346 | return 1; |
4c7f0d61 |
347 | } |
348 | |
349 | /* |
4f2b387f |
350 | * Print current directory. Easy as pie. |
351 | */ |
352 | int sftp_cmd_pwd(struct sftp_command *cmd) |
353 | { |
fa3db767 |
354 | if (back == NULL) { |
355 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
356 | return 0; |
357 | } |
358 | |
4f2b387f |
359 | printf("Remote directory is %s\n", pwd); |
df49ff19 |
360 | return 1; |
4f2b387f |
361 | } |
362 | |
363 | /* |
d92624dc |
364 | * Get a file and save it at the local end. We have two very |
365 | * similar commands here: `get' and `reget', which differ in that |
366 | * `reget' checks for the existence of the destination file and |
367 | * starts from where a previous aborted transfer left off. |
4c7f0d61 |
368 | */ |
d92624dc |
369 | int sftp_general_get(struct sftp_command *cmd, int restart) |
32874aea |
370 | { |
4c7f0d61 |
371 | struct fxp_handle *fh; |
1bc24185 |
372 | struct sftp_packet *pktin; |
373 | struct sftp_request *req, *rreq; |
c606c42d |
374 | struct fxp_xfer *xfer; |
4c7f0d61 |
375 | char *fname, *outfname; |
376 | uint64 offset; |
377 | FILE *fp; |
df49ff19 |
378 | int ret; |
4c7f0d61 |
379 | |
fa3db767 |
380 | if (back == NULL) { |
381 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
382 | return 0; |
383 | } |
384 | |
4c7f0d61 |
385 | if (cmd->nwords < 2) { |
386 | printf("get: expects a filename\n"); |
387 | return 0; |
388 | } |
389 | |
390 | fname = canonify(cmd->words[1]); |
391 | if (!fname) { |
392 | printf("%s: %s\n", cmd->words[1], fxp_error()); |
393 | return 0; |
394 | } |
dcf8495c |
395 | outfname = (cmd->nwords == 2 ? |
396 | stripslashes(cmd->words[1], 0) : cmd->words[2]); |
4c7f0d61 |
397 | |
1bc24185 |
398 | sftp_register(req = fxp_open_send(fname, SSH_FXF_READ)); |
399 | rreq = sftp_find_request(pktin = sftp_recv()); |
400 | assert(rreq == req); |
7b7de4f4 |
401 | fh = fxp_open_recv(pktin, rreq); |
1bc24185 |
402 | |
4c7f0d61 |
403 | if (!fh) { |
404 | printf("%s: %s\n", fname, fxp_error()); |
405 | sfree(fname); |
406 | return 0; |
407 | } |
d92624dc |
408 | |
409 | if (restart) { |
410 | fp = fopen(outfname, "rb+"); |
411 | } else { |
412 | fp = fopen(outfname, "wb"); |
413 | } |
414 | |
4c7f0d61 |
415 | if (!fp) { |
416 | printf("local: unable to open %s\n", outfname); |
1bc24185 |
417 | |
418 | sftp_register(req = fxp_close_send(fh)); |
419 | rreq = sftp_find_request(pktin = sftp_recv()); |
420 | assert(rreq == req); |
7b7de4f4 |
421 | fxp_close_recv(pktin, rreq); |
1bc24185 |
422 | |
4c7f0d61 |
423 | sfree(fname); |
424 | return 0; |
425 | } |
426 | |
d92624dc |
427 | if (restart) { |
428 | long posn; |
429 | fseek(fp, 0L, SEEK_END); |
430 | posn = ftell(fp); |
431 | printf("reget: restarting at file position %ld\n", posn); |
432 | offset = uint64_make(0, posn); |
433 | } else { |
434 | offset = uint64_make(0, 0); |
435 | } |
4c7f0d61 |
436 | |
d92624dc |
437 | printf("remote:%s => local:%s\n", fname, outfname); |
4c7f0d61 |
438 | |
439 | /* |
440 | * FIXME: we can use FXP_FSTAT here to get the file size, and |
441 | * thus put up a progress bar. |
442 | */ |
df49ff19 |
443 | ret = 1; |
c606c42d |
444 | xfer = xfer_download_init(fh, offset); |
df0870fc |
445 | while (!xfer_done(xfer)) { |
c606c42d |
446 | void *vbuf; |
447 | int ret, len; |
4c7f0d61 |
448 | int wpos, wlen; |
449 | |
c606c42d |
450 | xfer_download_queue(xfer); |
451 | pktin = sftp_recv(); |
452 | ret = xfer_download_gotpkt(xfer, pktin); |
453 | |
454 | if (ret < 0) { |
455 | printf("error while reading: %s\n", fxp_error()); |
456 | ret = 0; |
4c7f0d61 |
457 | } |
32874aea |
458 | |
c606c42d |
459 | while (xfer_download_data(xfer, &vbuf, &len)) { |
460 | unsigned char *buf = (unsigned char *)vbuf; |
461 | |
462 | wpos = 0; |
463 | while (wpos < len) { |
464 | wlen = fwrite(buf + wpos, 1, len - wpos, fp); |
465 | if (wlen <= 0) { |
466 | printf("error while writing local file\n"); |
467 | ret = 0; |
468 | xfer_set_error(xfer); |
469 | } |
470 | wpos += wlen; |
471 | } |
472 | if (wpos < len) { /* we had an error */ |
df49ff19 |
473 | ret = 0; |
c606c42d |
474 | xfer_set_error(xfer); |
4c7f0d61 |
475 | } |
9ff4e23d |
476 | |
477 | sfree(vbuf); |
df49ff19 |
478 | } |
4c7f0d61 |
479 | } |
480 | |
c606c42d |
481 | xfer_cleanup(xfer); |
482 | |
4c7f0d61 |
483 | fclose(fp); |
1bc24185 |
484 | |
485 | sftp_register(req = fxp_close_send(fh)); |
486 | rreq = sftp_find_request(pktin = sftp_recv()); |
487 | assert(rreq == req); |
7b7de4f4 |
488 | fxp_close_recv(pktin, rreq); |
1bc24185 |
489 | |
4c7f0d61 |
490 | sfree(fname); |
491 | |
df49ff19 |
492 | return ret; |
4c7f0d61 |
493 | } |
d92624dc |
494 | int sftp_cmd_get(struct sftp_command *cmd) |
495 | { |
496 | return sftp_general_get(cmd, 0); |
497 | } |
498 | int sftp_cmd_reget(struct sftp_command *cmd) |
499 | { |
500 | return sftp_general_get(cmd, 1); |
501 | } |
4c7f0d61 |
502 | |
503 | /* |
d92624dc |
504 | * Send a file and store it at the remote end. We have two very |
505 | * similar commands here: `put' and `reput', which differ in that |
506 | * `reput' checks for the existence of the destination file and |
507 | * starts from where a previous aborted transfer left off. |
4c7f0d61 |
508 | */ |
d92624dc |
509 | int sftp_general_put(struct sftp_command *cmd, int restart) |
32874aea |
510 | { |
4c7f0d61 |
511 | struct fxp_handle *fh; |
df0870fc |
512 | struct fxp_xfer *xfer; |
4c7f0d61 |
513 | char *fname, *origoutfname, *outfname; |
1bc24185 |
514 | struct sftp_packet *pktin; |
515 | struct sftp_request *req, *rreq; |
4c7f0d61 |
516 | uint64 offset; |
517 | FILE *fp; |
df0870fc |
518 | int ret, err, eof; |
4c7f0d61 |
519 | |
fa3db767 |
520 | if (back == NULL) { |
521 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
522 | return 0; |
523 | } |
524 | |
4c7f0d61 |
525 | if (cmd->nwords < 2) { |
526 | printf("put: expects a filename\n"); |
527 | return 0; |
528 | } |
529 | |
530 | fname = cmd->words[1]; |
dcf8495c |
531 | origoutfname = (cmd->nwords == 2 ? |
532 | stripslashes(cmd->words[1], 1) : cmd->words[2]); |
4c7f0d61 |
533 | outfname = canonify(origoutfname); |
f9e162aa |
534 | if (!outfname) { |
4c7f0d61 |
535 | printf("%s: %s\n", origoutfname, fxp_error()); |
536 | return 0; |
537 | } |
538 | |
539 | fp = fopen(fname, "rb"); |
540 | if (!fp) { |
541 | printf("local: unable to open %s\n", fname); |
4c7f0d61 |
542 | sfree(outfname); |
543 | return 0; |
544 | } |
d92624dc |
545 | if (restart) { |
1bc24185 |
546 | sftp_register(req = fxp_open_send(outfname, SSH_FXF_WRITE)); |
d92624dc |
547 | } else { |
1bc24185 |
548 | sftp_register(req = fxp_open_send(outfname, SSH_FXF_WRITE | |
549 | SSH_FXF_CREAT | SSH_FXF_TRUNC)); |
d92624dc |
550 | } |
1bc24185 |
551 | rreq = sftp_find_request(pktin = sftp_recv()); |
552 | assert(rreq == req); |
7b7de4f4 |
553 | fh = fxp_open_recv(pktin, rreq); |
1bc24185 |
554 | |
4c7f0d61 |
555 | if (!fh) { |
556 | printf("%s: %s\n", outfname, fxp_error()); |
557 | sfree(outfname); |
558 | return 0; |
559 | } |
560 | |
d92624dc |
561 | if (restart) { |
562 | char decbuf[30]; |
563 | struct fxp_attrs attrs; |
1bc24185 |
564 | int ret; |
565 | |
566 | sftp_register(req = fxp_fstat_send(fh)); |
567 | rreq = sftp_find_request(pktin = sftp_recv()); |
568 | assert(rreq == req); |
7b7de4f4 |
569 | ret = fxp_fstat_recv(pktin, rreq, &attrs); |
1bc24185 |
570 | |
571 | if (!ret) { |
d92624dc |
572 | printf("read size of %s: %s\n", outfname, fxp_error()); |
573 | sfree(outfname); |
574 | return 0; |
575 | } |
576 | if (!(attrs.flags & SSH_FILEXFER_ATTR_SIZE)) { |
577 | printf("read size of %s: size was not given\n", outfname); |
578 | sfree(outfname); |
579 | return 0; |
580 | } |
581 | offset = attrs.size; |
582 | uint64_decimal(offset, decbuf); |
583 | printf("reput: restarting at file position %s\n", decbuf); |
584 | if (uint64_compare(offset, uint64_make(0, LONG_MAX)) > 0) { |
585 | printf("reput: remote file is larger than we can deal with\n"); |
586 | sfree(outfname); |
587 | return 0; |
588 | } |
589 | if (fseek(fp, offset.lo, SEEK_SET) != 0) |
590 | fseek(fp, 0, SEEK_END); /* *shrug* */ |
591 | } else { |
592 | offset = uint64_make(0, 0); |
593 | } |
4c7f0d61 |
594 | |
d92624dc |
595 | printf("local:%s => remote:%s\n", fname, outfname); |
4c7f0d61 |
596 | |
597 | /* |
598 | * FIXME: we can use FXP_FSTAT here to get the file size, and |
599 | * thus put up a progress bar. |
600 | */ |
df49ff19 |
601 | ret = 1; |
df0870fc |
602 | xfer = xfer_upload_init(fh, offset); |
603 | err = eof = 0; |
604 | while ((!err && !eof) || !xfer_done(xfer)) { |
4c7f0d61 |
605 | char buffer[4096]; |
1bc24185 |
606 | int len, ret; |
4c7f0d61 |
607 | |
df0870fc |
608 | while (xfer_upload_ready(xfer) && !err && !eof) { |
609 | len = fread(buffer, 1, sizeof(buffer), fp); |
610 | if (len == -1) { |
611 | printf("error while reading local file\n"); |
612 | err = 1; |
613 | } else if (len == 0) { |
614 | eof = 1; |
615 | } else { |
616 | xfer_upload_data(xfer, buffer, len); |
617 | } |
4c7f0d61 |
618 | } |
1bc24185 |
619 | |
2dbd915a |
620 | if (!xfer_done(xfer)) { |
621 | pktin = sftp_recv(); |
622 | ret = xfer_upload_gotpkt(xfer, pktin); |
623 | if (!ret) { |
624 | printf("error while writing: %s\n", fxp_error()); |
625 | err = 1; |
626 | } |
4c7f0d61 |
627 | } |
4c7f0d61 |
628 | } |
629 | |
df0870fc |
630 | xfer_cleanup(xfer); |
631 | |
1bc24185 |
632 | sftp_register(req = fxp_close_send(fh)); |
633 | rreq = sftp_find_request(pktin = sftp_recv()); |
634 | assert(rreq == req); |
7b7de4f4 |
635 | fxp_close_recv(pktin, rreq); |
1bc24185 |
636 | |
4c7f0d61 |
637 | fclose(fp); |
638 | sfree(outfname); |
639 | |
df49ff19 |
640 | return ret; |
4c7f0d61 |
641 | } |
d92624dc |
642 | int sftp_cmd_put(struct sftp_command *cmd) |
643 | { |
644 | return sftp_general_put(cmd, 0); |
645 | } |
646 | int sftp_cmd_reput(struct sftp_command *cmd) |
647 | { |
648 | return sftp_general_put(cmd, 1); |
649 | } |
4c7f0d61 |
650 | |
9954aaa3 |
651 | int sftp_cmd_mkdir(struct sftp_command *cmd) |
652 | { |
653 | char *dir; |
1bc24185 |
654 | struct sftp_packet *pktin; |
655 | struct sftp_request *req, *rreq; |
9954aaa3 |
656 | int result; |
657 | |
fa3db767 |
658 | if (back == NULL) { |
659 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
660 | return 0; |
661 | } |
9954aaa3 |
662 | |
663 | if (cmd->nwords < 2) { |
664 | printf("mkdir: expects a directory\n"); |
665 | return 0; |
666 | } |
667 | |
668 | dir = canonify(cmd->words[1]); |
669 | if (!dir) { |
670 | printf("%s: %s\n", dir, fxp_error()); |
671 | return 0; |
672 | } |
673 | |
1bc24185 |
674 | sftp_register(req = fxp_mkdir_send(dir)); |
675 | rreq = sftp_find_request(pktin = sftp_recv()); |
676 | assert(rreq == req); |
7b7de4f4 |
677 | result = fxp_mkdir_recv(pktin, rreq); |
1bc24185 |
678 | |
9954aaa3 |
679 | if (!result) { |
680 | printf("mkdir %s: %s\n", dir, fxp_error()); |
681 | sfree(dir); |
682 | return 0; |
683 | } |
684 | |
d92624dc |
685 | sfree(dir); |
df49ff19 |
686 | return 1; |
9954aaa3 |
687 | } |
688 | |
689 | int sftp_cmd_rmdir(struct sftp_command *cmd) |
690 | { |
691 | char *dir; |
1bc24185 |
692 | struct sftp_packet *pktin; |
693 | struct sftp_request *req, *rreq; |
9954aaa3 |
694 | int result; |
695 | |
fa3db767 |
696 | if (back == NULL) { |
697 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
698 | return 0; |
699 | } |
9954aaa3 |
700 | |
701 | if (cmd->nwords < 2) { |
702 | printf("rmdir: expects a directory\n"); |
703 | return 0; |
704 | } |
705 | |
706 | dir = canonify(cmd->words[1]); |
707 | if (!dir) { |
708 | printf("%s: %s\n", dir, fxp_error()); |
709 | return 0; |
710 | } |
711 | |
1bc24185 |
712 | sftp_register(req = fxp_rmdir_send(dir)); |
713 | rreq = sftp_find_request(pktin = sftp_recv()); |
714 | assert(rreq == req); |
7b7de4f4 |
715 | result = fxp_rmdir_recv(pktin, rreq); |
1bc24185 |
716 | |
9954aaa3 |
717 | if (!result) { |
718 | printf("rmdir %s: %s\n", dir, fxp_error()); |
719 | sfree(dir); |
720 | return 0; |
721 | } |
722 | |
d92624dc |
723 | sfree(dir); |
df49ff19 |
724 | return 1; |
9954aaa3 |
725 | } |
726 | |
727 | int sftp_cmd_rm(struct sftp_command *cmd) |
728 | { |
729 | char *fname; |
1bc24185 |
730 | struct sftp_packet *pktin; |
731 | struct sftp_request *req, *rreq; |
9954aaa3 |
732 | int result; |
733 | |
fa3db767 |
734 | if (back == NULL) { |
735 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
736 | return 0; |
737 | } |
738 | |
9954aaa3 |
739 | if (cmd->nwords < 2) { |
740 | printf("rm: expects a filename\n"); |
741 | return 0; |
742 | } |
743 | |
744 | fname = canonify(cmd->words[1]); |
745 | if (!fname) { |
746 | printf("%s: %s\n", fname, fxp_error()); |
747 | return 0; |
748 | } |
749 | |
1bc24185 |
750 | sftp_register(req = fxp_remove_send(fname)); |
751 | rreq = sftp_find_request(pktin = sftp_recv()); |
752 | assert(rreq == req); |
7b7de4f4 |
753 | result = fxp_remove_recv(pktin, rreq); |
1bc24185 |
754 | |
9954aaa3 |
755 | if (!result) { |
756 | printf("rm %s: %s\n", fname, fxp_error()); |
757 | sfree(fname); |
758 | return 0; |
759 | } |
760 | |
d92624dc |
761 | sfree(fname); |
df49ff19 |
762 | return 1; |
d92624dc |
763 | } |
764 | |
765 | int sftp_cmd_mv(struct sftp_command *cmd) |
766 | { |
767 | char *srcfname, *dstfname; |
1bc24185 |
768 | struct sftp_packet *pktin; |
769 | struct sftp_request *req, *rreq; |
d92624dc |
770 | int result; |
771 | |
fa3db767 |
772 | if (back == NULL) { |
773 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
774 | return 0; |
775 | } |
776 | |
d92624dc |
777 | if (cmd->nwords < 3) { |
778 | printf("mv: expects two filenames\n"); |
9954aaa3 |
779 | return 0; |
d92624dc |
780 | } |
781 | srcfname = canonify(cmd->words[1]); |
782 | if (!srcfname) { |
783 | printf("%s: %s\n", srcfname, fxp_error()); |
784 | return 0; |
785 | } |
786 | |
787 | dstfname = canonify(cmd->words[2]); |
788 | if (!dstfname) { |
789 | printf("%s: %s\n", dstfname, fxp_error()); |
790 | return 0; |
791 | } |
9954aaa3 |
792 | |
1bc24185 |
793 | sftp_register(req = fxp_rename_send(srcfname, dstfname)); |
794 | rreq = sftp_find_request(pktin = sftp_recv()); |
795 | assert(rreq == req); |
7b7de4f4 |
796 | result = fxp_rename_recv(pktin, rreq); |
1bc24185 |
797 | |
d92624dc |
798 | if (!result) { |
799 | char const *error = fxp_error(); |
800 | struct fxp_attrs attrs; |
801 | |
802 | /* |
803 | * The move might have failed because dstfname pointed at a |
804 | * directory. We check this possibility now: if dstfname |
805 | * _is_ a directory, we re-attempt the move by appending |
806 | * the basename of srcfname to dstfname. |
807 | */ |
1bc24185 |
808 | sftp_register(req = fxp_stat_send(dstfname)); |
809 | rreq = sftp_find_request(pktin = sftp_recv()); |
810 | assert(rreq == req); |
7b7de4f4 |
811 | result = fxp_stat_recv(pktin, rreq, &attrs); |
1bc24185 |
812 | |
d92624dc |
813 | if (result && |
814 | (attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) && |
815 | (attrs.permissions & 0040000)) { |
816 | char *p; |
817 | char *newname, *newcanon; |
818 | printf("(destination %s is a directory)\n", dstfname); |
819 | p = srcfname + strlen(srcfname); |
820 | while (p > srcfname && p[-1] != '/') p--; |
821 | newname = dupcat(dstfname, "/", p, NULL); |
822 | newcanon = canonify(newname); |
823 | sfree(newname); |
824 | if (newcanon) { |
825 | sfree(dstfname); |
826 | dstfname = newcanon; |
1bc24185 |
827 | |
828 | sftp_register(req = fxp_rename_send(srcfname, dstfname)); |
829 | rreq = sftp_find_request(pktin = sftp_recv()); |
830 | assert(rreq == req); |
7b7de4f4 |
831 | result = fxp_rename_recv(pktin, rreq); |
1bc24185 |
832 | |
d92624dc |
833 | error = result ? NULL : fxp_error(); |
834 | } |
835 | } |
836 | if (error) { |
837 | printf("mv %s %s: %s\n", srcfname, dstfname, error); |
838 | sfree(srcfname); |
839 | sfree(dstfname); |
840 | return 0; |
841 | } |
842 | } |
843 | printf("%s -> %s\n", srcfname, dstfname); |
844 | |
845 | sfree(srcfname); |
846 | sfree(dstfname); |
df49ff19 |
847 | return 1; |
9954aaa3 |
848 | } |
849 | |
d92624dc |
850 | int sftp_cmd_chmod(struct sftp_command *cmd) |
851 | { |
852 | char *fname, *mode; |
853 | int result; |
854 | struct fxp_attrs attrs; |
855 | unsigned attrs_clr, attrs_xor, oldperms, newperms; |
1bc24185 |
856 | struct sftp_packet *pktin; |
857 | struct sftp_request *req, *rreq; |
d92624dc |
858 | |
fa3db767 |
859 | if (back == NULL) { |
860 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
861 | return 0; |
862 | } |
863 | |
d92624dc |
864 | if (cmd->nwords < 3) { |
865 | printf("chmod: expects a mode specifier and a filename\n"); |
866 | return 0; |
867 | } |
868 | |
869 | /* |
870 | * Attempt to parse the mode specifier in cmd->words[1]. We |
871 | * don't support the full horror of Unix chmod; instead we |
872 | * support a much simpler syntax in which the user can either |
873 | * specify an octal number, or a comma-separated sequence of |
874 | * [ugoa]*[-+=][rwxst]+. (The initial [ugoa] sequence may |
875 | * _only_ be omitted if the only attribute mentioned is t, |
876 | * since all others require a user/group/other specification. |
877 | * Additionally, the s attribute may not be specified for any |
878 | * [ugoa] specifications other than exactly u or exactly g. |
879 | */ |
880 | attrs_clr = attrs_xor = 0; |
881 | mode = cmd->words[1]; |
882 | if (mode[0] >= '0' && mode[0] <= '9') { |
883 | if (mode[strspn(mode, "01234567")]) { |
884 | printf("chmod: numeric file modes should" |
885 | " contain digits 0-7 only\n"); |
886 | return 0; |
887 | } |
888 | attrs_clr = 07777; |
889 | sscanf(mode, "%o", &attrs_xor); |
890 | attrs_xor &= attrs_clr; |
891 | } else { |
892 | while (*mode) { |
893 | char *modebegin = mode; |
894 | unsigned subset, perms; |
895 | int action; |
896 | |
897 | subset = 0; |
898 | while (*mode && *mode != ',' && |
899 | *mode != '+' && *mode != '-' && *mode != '=') { |
900 | switch (*mode) { |
901 | case 'u': subset |= 04700; break; /* setuid, user perms */ |
902 | case 'g': subset |= 02070; break; /* setgid, group perms */ |
903 | case 'o': subset |= 00007; break; /* just other perms */ |
904 | case 'a': subset |= 06777; break; /* all of the above */ |
905 | default: |
906 | printf("chmod: file mode '%.*s' contains unrecognised" |
907 | " user/group/other specifier '%c'\n", |
b51259f6 |
908 | (int)strcspn(modebegin, ","), modebegin, *mode); |
d92624dc |
909 | return 0; |
910 | } |
911 | mode++; |
912 | } |
913 | if (!*mode || *mode == ',') { |
914 | printf("chmod: file mode '%.*s' is incomplete\n", |
b51259f6 |
915 | (int)strcspn(modebegin, ","), modebegin); |
d92624dc |
916 | return 0; |
917 | } |
918 | action = *mode++; |
919 | if (!*mode || *mode == ',') { |
920 | printf("chmod: file mode '%.*s' is incomplete\n", |
b51259f6 |
921 | (int)strcspn(modebegin, ","), modebegin); |
d92624dc |
922 | return 0; |
923 | } |
924 | perms = 0; |
925 | while (*mode && *mode != ',') { |
926 | switch (*mode) { |
927 | case 'r': perms |= 00444; break; |
928 | case 'w': perms |= 00222; break; |
929 | case 'x': perms |= 00111; break; |
930 | case 't': perms |= 01000; subset |= 01000; break; |
931 | case 's': |
932 | if ((subset & 06777) != 04700 && |
933 | (subset & 06777) != 02070) { |
934 | printf("chmod: file mode '%.*s': set[ug]id bit should" |
935 | " be used with exactly one of u or g only\n", |
b51259f6 |
936 | (int)strcspn(modebegin, ","), modebegin); |
d92624dc |
937 | return 0; |
938 | } |
939 | perms |= 06000; |
940 | break; |
941 | default: |
942 | printf("chmod: file mode '%.*s' contains unrecognised" |
943 | " permission specifier '%c'\n", |
b51259f6 |
944 | (int)strcspn(modebegin, ","), modebegin, *mode); |
d92624dc |
945 | return 0; |
946 | } |
947 | mode++; |
948 | } |
949 | if (!(subset & 06777) && (perms &~ subset)) { |
950 | printf("chmod: file mode '%.*s' contains no user/group/other" |
951 | " specifier and permissions other than 't' \n", |
b51259f6 |
952 | (int)strcspn(modebegin, ","), modebegin); |
d92624dc |
953 | return 0; |
954 | } |
955 | perms &= subset; |
956 | switch (action) { |
957 | case '+': |
958 | attrs_clr |= perms; |
959 | attrs_xor |= perms; |
960 | break; |
961 | case '-': |
962 | attrs_clr |= perms; |
963 | attrs_xor &= ~perms; |
964 | break; |
965 | case '=': |
966 | attrs_clr |= subset; |
967 | attrs_xor |= perms; |
968 | break; |
969 | } |
970 | if (*mode) mode++; /* eat comma */ |
971 | } |
972 | } |
973 | |
974 | fname = canonify(cmd->words[2]); |
975 | if (!fname) { |
976 | printf("%s: %s\n", fname, fxp_error()); |
977 | return 0; |
978 | } |
979 | |
1bc24185 |
980 | sftp_register(req = fxp_stat_send(fname)); |
981 | rreq = sftp_find_request(pktin = sftp_recv()); |
982 | assert(rreq == req); |
7b7de4f4 |
983 | result = fxp_stat_recv(pktin, rreq, &attrs); |
1bc24185 |
984 | |
d92624dc |
985 | if (!result || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) { |
986 | printf("get attrs for %s: %s\n", fname, |
987 | result ? "file permissions not provided" : fxp_error()); |
988 | sfree(fname); |
989 | return 0; |
990 | } |
991 | |
992 | attrs.flags = SSH_FILEXFER_ATTR_PERMISSIONS; /* perms _only_ */ |
993 | oldperms = attrs.permissions & 07777; |
994 | attrs.permissions &= ~attrs_clr; |
995 | attrs.permissions ^= attrs_xor; |
996 | newperms = attrs.permissions & 07777; |
997 | |
1bc24185 |
998 | sftp_register(req = fxp_setstat_send(fname, attrs)); |
999 | rreq = sftp_find_request(pktin = sftp_recv()); |
1000 | assert(rreq == req); |
7b7de4f4 |
1001 | result = fxp_setstat_recv(pktin, rreq); |
d92624dc |
1002 | |
1003 | if (!result) { |
1004 | printf("set attrs for %s: %s\n", fname, fxp_error()); |
1005 | sfree(fname); |
1006 | return 0; |
1007 | } |
1008 | |
1009 | printf("%s: %04o -> %04o\n", fname, oldperms, newperms); |
1010 | |
1011 | sfree(fname); |
df49ff19 |
1012 | return 1; |
d92624dc |
1013 | } |
9954aaa3 |
1014 | |
fa3db767 |
1015 | static int sftp_cmd_open(struct sftp_command *cmd) |
1016 | { |
1017 | if (back != NULL) { |
1018 | printf("psftp: already connected\n"); |
1019 | return 0; |
1020 | } |
1021 | |
1022 | if (cmd->nwords < 2) { |
1023 | printf("open: expects a host name\n"); |
1024 | return 0; |
1025 | } |
1026 | |
1027 | if (psftp_connect(cmd->words[1], NULL, 0)) { |
1028 | back = NULL; /* connection is already closed */ |
1029 | return -1; /* this is fatal */ |
1030 | } |
1031 | do_sftp_init(); |
df49ff19 |
1032 | return 1; |
fa3db767 |
1033 | } |
1034 | |
3af97463 |
1035 | static int sftp_cmd_lcd(struct sftp_command *cmd) |
1036 | { |
d6cc41e6 |
1037 | char *currdir, *errmsg; |
3af97463 |
1038 | |
1039 | if (cmd->nwords < 2) { |
1040 | printf("lcd: expects a local directory name\n"); |
1041 | return 0; |
1042 | } |
1043 | |
d6cc41e6 |
1044 | errmsg = psftp_lcd(cmd->words[1]); |
1045 | if (errmsg) { |
1046 | printf("lcd: unable to change directory: %s\n", errmsg); |
1047 | sfree(errmsg); |
3af97463 |
1048 | return 0; |
1049 | } |
1050 | |
d6cc41e6 |
1051 | currdir = psftp_getcwd(); |
3af97463 |
1052 | printf("New local directory is %s\n", currdir); |
1053 | sfree(currdir); |
1054 | |
1055 | return 1; |
1056 | } |
1057 | |
1058 | static int sftp_cmd_lpwd(struct sftp_command *cmd) |
1059 | { |
1060 | char *currdir; |
3af97463 |
1061 | |
d6cc41e6 |
1062 | currdir = psftp_getcwd(); |
3af97463 |
1063 | printf("Current local directory is %s\n", currdir); |
1064 | sfree(currdir); |
1065 | |
1066 | return 1; |
1067 | } |
1068 | |
1069 | static int sftp_cmd_pling(struct sftp_command *cmd) |
1070 | { |
1071 | int exitcode; |
1072 | |
1073 | exitcode = system(cmd->words[1]); |
1074 | return (exitcode == 0); |
1075 | } |
1076 | |
bf5240cd |
1077 | static int sftp_cmd_help(struct sftp_command *cmd); |
1078 | |
4c7f0d61 |
1079 | static struct sftp_cmd_lookup { |
1080 | char *name; |
bf5240cd |
1081 | /* |
1082 | * For help purposes, there are two kinds of command: |
1083 | * |
1084 | * - primary commands, in which `longhelp' is non-NULL. In |
1085 | * this case `shorthelp' is descriptive text, and `longhelp' |
1086 | * is longer descriptive text intended to be printed after |
1087 | * the command name. |
1088 | * |
1089 | * - alias commands, in which `longhelp' is NULL. In this case |
1090 | * `shorthelp' is the name of a primary command, which |
1091 | * contains the help that should double up for this command. |
1092 | */ |
3af97463 |
1093 | int listed; /* do we list this in primary help? */ |
bf5240cd |
1094 | char *shorthelp; |
1095 | char *longhelp; |
32874aea |
1096 | int (*obey) (struct sftp_command *); |
4c7f0d61 |
1097 | } sftp_lookup[] = { |
1098 | /* |
1099 | * List of sftp commands. This is binary-searched so it MUST be |
1100 | * in ASCII order. |
1101 | */ |
32874aea |
1102 | { |
d6cc41e6 |
1103 | "!", TRUE, "run a local command", |
3af97463 |
1104 | "<command>\n" |
d6cc41e6 |
1105 | /* FIXME: this example is crap for non-Windows. */ |
1106 | " Runs a local command. For example, \"!del myfile\".\n", |
3af97463 |
1107 | sftp_cmd_pling |
1108 | }, |
1109 | { |
1110 | "bye", TRUE, "finish your SFTP session", |
bf5240cd |
1111 | "\n" |
1112 | " Terminates your SFTP session and quits the PSFTP program.\n", |
1113 | sftp_cmd_quit |
1114 | }, |
1115 | { |
3af97463 |
1116 | "cd", TRUE, "change your remote working directory", |
bf5240cd |
1117 | " [ <New working directory> ]\n" |
1118 | " Change the remote working directory for your SFTP session.\n" |
1119 | " If a new working directory is not supplied, you will be\n" |
1120 | " returned to your home directory.\n", |
1121 | sftp_cmd_cd |
1122 | }, |
1123 | { |
3af97463 |
1124 | "chmod", TRUE, "change file permissions and modes", |
bf5240cd |
1125 | " ( <octal-digits> | <modifiers> ) <filename>\n" |
1126 | " Change the file permissions on a file or directory.\n" |
1127 | " <octal-digits> can be any octal Unix permission specifier.\n" |
1128 | " Alternatively, <modifiers> can include:\n" |
1129 | " u+r make file readable by owning user\n" |
1130 | " u+w make file writable by owning user\n" |
1131 | " u+x make file executable by owning user\n" |
1132 | " u-r make file not readable by owning user\n" |
1133 | " [also u-w, u-x]\n" |
1134 | " g+r make file readable by members of owning group\n" |
1135 | " [also g+w, g+x, g-r, g-w, g-x]\n" |
1136 | " o+r make file readable by all other users\n" |
1137 | " [also o+w, o+x, o-r, o-w, o-x]\n" |
1138 | " a+r make file readable by absolutely everybody\n" |
1139 | " [also a+w, a+x, a-r, a-w, a-x]\n" |
1140 | " u+s enable the Unix set-user-ID bit\n" |
1141 | " u-s disable the Unix set-user-ID bit\n" |
1142 | " g+s enable the Unix set-group-ID bit\n" |
1143 | " g-s disable the Unix set-group-ID bit\n" |
1144 | " +t enable the Unix \"sticky bit\"\n" |
1145 | " You can give more than one modifier for the same user (\"g-rwx\"), and\n" |
1146 | " more than one user for the same modifier (\"ug+w\"). You can\n" |
1147 | " use commas to separate different modifiers (\"u+rwx,g+s\").\n", |
1148 | sftp_cmd_chmod |
1149 | }, |
1150 | { |
3af97463 |
1151 | "del", TRUE, "delete a file", |
bf5240cd |
1152 | " <filename>\n" |
1153 | " Delete a file.\n", |
1154 | sftp_cmd_rm |
1155 | }, |
1156 | { |
3af97463 |
1157 | "delete", FALSE, "del", NULL, sftp_cmd_rm |
bf5240cd |
1158 | }, |
1159 | { |
3af97463 |
1160 | "dir", TRUE, "list contents of a remote directory", |
bf5240cd |
1161 | " [ <directory-name> ]\n" |
1162 | " List the contents of a specified directory on the server.\n" |
1163 | " If <directory-name> is not given, the current working directory\n" |
1164 | " will be listed.\n", |
1165 | sftp_cmd_ls |
1166 | }, |
1167 | { |
3af97463 |
1168 | "exit", TRUE, "bye", NULL, sftp_cmd_quit |
bf5240cd |
1169 | }, |
1170 | { |
3af97463 |
1171 | "get", TRUE, "download a file from the server to your local machine", |
bf5240cd |
1172 | " <filename> [ <local-filename> ]\n" |
1173 | " Downloads a file on the server and stores it locally under\n" |
1174 | " the same name, or under a different one if you supply the\n" |
1175 | " argument <local-filename>.\n", |
1176 | sftp_cmd_get |
1177 | }, |
1178 | { |
3af97463 |
1179 | "help", TRUE, "give help", |
bf5240cd |
1180 | " [ <command> [ <command> ... ] ]\n" |
1181 | " Give general help if no commands are specified.\n" |
1182 | " If one or more commands are specified, give specific help on\n" |
1183 | " those particular commands.\n", |
1184 | sftp_cmd_help |
1185 | }, |
1186 | { |
3af97463 |
1187 | "lcd", TRUE, "change local working directory", |
1188 | " <local-directory-name>\n" |
1189 | " Change the local working directory of the PSFTP program (the\n" |
1190 | " default location where the \"get\" command will save files).\n", |
1191 | sftp_cmd_lcd |
1192 | }, |
1193 | { |
1194 | "lpwd", TRUE, "print local working directory", |
1195 | "\n" |
1196 | " Print the local working directory of the PSFTP program (the\n" |
1197 | " default location where the \"get\" command will save files).\n", |
1198 | sftp_cmd_lpwd |
1199 | }, |
1200 | { |
1201 | "ls", TRUE, "dir", NULL, |
bf5240cd |
1202 | sftp_cmd_ls |
1203 | }, |
1204 | { |
3af97463 |
1205 | "mkdir", TRUE, "create a directory on the remote server", |
bf5240cd |
1206 | " <directory-name>\n" |
1207 | " Creates a directory with the given name on the server.\n", |
1208 | sftp_cmd_mkdir |
1209 | }, |
1210 | { |
3af97463 |
1211 | "mv", TRUE, "move or rename a file on the remote server", |
bf5240cd |
1212 | " <source-filename> <destination-filename>\n" |
1213 | " Moves or renames the file <source-filename> on the server,\n" |
1214 | " so that it is accessible under the name <destination-filename>.\n", |
1215 | sftp_cmd_mv |
1216 | }, |
1217 | { |
3af97463 |
1218 | "open", TRUE, "connect to a host", |
fa3db767 |
1219 | " [<user>@]<hostname>\n" |
1220 | " Establishes an SFTP connection to a given host. Only usable\n" |
1221 | " when you did not already specify a host name on the command\n" |
1222 | " line.\n", |
1223 | sftp_cmd_open |
1224 | }, |
1225 | { |
56542985 |
1226 | "put", TRUE, "upload a file from your local machine to the server", |
1227 | " <filename> [ <remote-filename> ]\n" |
1228 | " Uploads a file to the server and stores it there under\n" |
1229 | " the same name, or under a different one if you supply the\n" |
1230 | " argument <remote-filename>.\n", |
1231 | sftp_cmd_put |
1232 | }, |
1233 | { |
3af97463 |
1234 | "pwd", TRUE, "print your remote working directory", |
4f2b387f |
1235 | "\n" |
1236 | " Print the current remote working directory for your SFTP session.\n", |
1237 | sftp_cmd_pwd |
1238 | }, |
1239 | { |
3af97463 |
1240 | "quit", TRUE, "bye", NULL, |
bf5240cd |
1241 | sftp_cmd_quit |
1242 | }, |
1243 | { |
3af97463 |
1244 | "reget", TRUE, "continue downloading a file", |
bf5240cd |
1245 | " <filename> [ <local-filename> ]\n" |
1246 | " Works exactly like the \"get\" command, but the local file\n" |
1247 | " must already exist. The download will begin at the end of the\n" |
1248 | " file. This is for resuming a download that was interrupted.\n", |
1249 | sftp_cmd_reget |
1250 | }, |
1251 | { |
3af97463 |
1252 | "ren", TRUE, "mv", NULL, |
bf5240cd |
1253 | sftp_cmd_mv |
1254 | }, |
1255 | { |
3af97463 |
1256 | "rename", FALSE, "mv", NULL, |
bf5240cd |
1257 | sftp_cmd_mv |
1258 | }, |
1259 | { |
3af97463 |
1260 | "reput", TRUE, "continue uploading a file", |
bf5240cd |
1261 | " <filename> [ <remote-filename> ]\n" |
1262 | " Works exactly like the \"put\" command, but the remote file\n" |
1263 | " must already exist. The upload will begin at the end of the\n" |
1264 | " file. This is for resuming an upload that was interrupted.\n", |
1265 | sftp_cmd_reput |
1266 | }, |
1267 | { |
3af97463 |
1268 | "rm", TRUE, "del", NULL, |
bf5240cd |
1269 | sftp_cmd_rm |
1270 | }, |
1271 | { |
3af97463 |
1272 | "rmdir", TRUE, "remove a directory on the remote server", |
bf5240cd |
1273 | " <directory-name>\n" |
1274 | " Removes the directory with the given name on the server.\n" |
1275 | " The directory will not be removed unless it is empty.\n", |
1276 | sftp_cmd_rmdir |
1277 | } |
1278 | }; |
1279 | |
1280 | const struct sftp_cmd_lookup *lookup_command(char *name) |
1281 | { |
1282 | int i, j, k, cmp; |
1283 | |
1284 | i = -1; |
1285 | j = sizeof(sftp_lookup) / sizeof(*sftp_lookup); |
1286 | while (j - i > 1) { |
1287 | k = (j + i) / 2; |
1288 | cmp = strcmp(name, sftp_lookup[k].name); |
1289 | if (cmp < 0) |
1290 | j = k; |
1291 | else if (cmp > 0) |
1292 | i = k; |
1293 | else { |
1294 | return &sftp_lookup[k]; |
1295 | } |
1296 | } |
1297 | return NULL; |
1298 | } |
1299 | |
1300 | static int sftp_cmd_help(struct sftp_command *cmd) |
1301 | { |
1302 | int i; |
1303 | if (cmd->nwords == 1) { |
1304 | /* |
1305 | * Give short help on each command. |
1306 | */ |
1307 | int maxlen; |
1308 | maxlen = 0; |
1309 | for (i = 0; i < sizeof(sftp_lookup) / sizeof(*sftp_lookup); i++) { |
3af97463 |
1310 | int len; |
1311 | if (!sftp_lookup[i].listed) |
1312 | continue; |
1313 | len = strlen(sftp_lookup[i].name); |
bf5240cd |
1314 | if (maxlen < len) |
1315 | maxlen = len; |
1316 | } |
1317 | for (i = 0; i < sizeof(sftp_lookup) / sizeof(*sftp_lookup); i++) { |
1318 | const struct sftp_cmd_lookup *lookup; |
3af97463 |
1319 | if (!sftp_lookup[i].listed) |
1320 | continue; |
bf5240cd |
1321 | lookup = &sftp_lookup[i]; |
1322 | printf("%-*s", maxlen+2, lookup->name); |
1323 | if (lookup->longhelp == NULL) |
1324 | lookup = lookup_command(lookup->shorthelp); |
1325 | printf("%s\n", lookup->shorthelp); |
1326 | } |
1327 | } else { |
1328 | /* |
1329 | * Give long help on specific commands. |
1330 | */ |
1331 | for (i = 1; i < cmd->nwords; i++) { |
1332 | const struct sftp_cmd_lookup *lookup; |
1333 | lookup = lookup_command(cmd->words[i]); |
1334 | if (!lookup) { |
1335 | printf("help: %s: command not found\n", cmd->words[i]); |
1336 | } else { |
1337 | printf("%s", lookup->name); |
1338 | if (lookup->longhelp == NULL) |
1339 | lookup = lookup_command(lookup->shorthelp); |
1340 | printf("%s", lookup->longhelp); |
1341 | } |
1342 | } |
1343 | } |
df49ff19 |
1344 | return 1; |
bf5240cd |
1345 | } |
4c7f0d61 |
1346 | |
1347 | /* ---------------------------------------------------------------------- |
1348 | * Command line reading and parsing. |
1349 | */ |
9954aaa3 |
1350 | struct sftp_command *sftp_getcmd(FILE *fp, int mode, int modeflags) |
32874aea |
1351 | { |
4c7f0d61 |
1352 | char *line; |
1353 | int linelen, linesize; |
1354 | struct sftp_command *cmd; |
1355 | char *p, *q, *r; |
1356 | int quoting; |
1357 | |
df49ff19 |
1358 | if ((mode == 0) || (modeflags & 1)) { |
1359 | printf("psftp> "); |
1360 | } |
4c7f0d61 |
1361 | fflush(stdout); |
1362 | |
3d88e64d |
1363 | cmd = snew(struct sftp_command); |
4c7f0d61 |
1364 | cmd->words = NULL; |
1365 | cmd->nwords = 0; |
1366 | cmd->wordssize = 0; |
1367 | |
1368 | line = NULL; |
1369 | linesize = linelen = 0; |
1370 | while (1) { |
1371 | int len; |
1372 | char *ret; |
1373 | |
1374 | linesize += 512; |
3d88e64d |
1375 | line = sresize(line, linesize, char); |
9954aaa3 |
1376 | ret = fgets(line + linelen, linesize - linelen, fp); |
4c7f0d61 |
1377 | |
1378 | if (!ret || (linelen == 0 && line[0] == '\0')) { |
1379 | cmd->obey = sftp_cmd_quit; |
d13c2ee9 |
1380 | if ((mode == 0) || (modeflags & 1)) |
1381 | printf("quit\n"); |
4c7f0d61 |
1382 | return cmd; /* eof */ |
1383 | } |
32874aea |
1384 | len = linelen + strlen(line + linelen); |
4c7f0d61 |
1385 | linelen += len; |
32874aea |
1386 | if (line[linelen - 1] == '\n') { |
4c7f0d61 |
1387 | linelen--; |
1388 | line[linelen] = '\0'; |
1389 | break; |
1390 | } |
1391 | } |
df49ff19 |
1392 | if (modeflags & 1) { |
1393 | printf("%s\n", line); |
1394 | } |
4c7f0d61 |
1395 | |
4c7f0d61 |
1396 | p = line; |
3af97463 |
1397 | while (*p && (*p == ' ' || *p == '\t')) |
1398 | p++; |
1399 | |
1400 | if (*p == '!') { |
1401 | /* |
1402 | * Special case: the ! command. This is always parsed as |
1403 | * exactly two words: one containing the !, and the second |
1404 | * containing everything else on the line. |
1405 | */ |
1406 | cmd->nwords = cmd->wordssize = 2; |
3d88e64d |
1407 | cmd->words = sresize(cmd->words, cmd->wordssize, char *); |
679539d7 |
1408 | cmd->words[0] = dupstr("!"); |
1409 | cmd->words[1] = dupstr(p+1); |
3af97463 |
1410 | } else { |
1411 | |
1412 | /* |
1413 | * Parse the command line into words. The syntax is: |
1414 | * - double quotes are removed, but cause spaces within to be |
1415 | * treated as non-separating. |
1416 | * - a double-doublequote pair is a literal double quote, inside |
1417 | * _or_ outside quotes. Like this: |
1418 | * |
1419 | * firstword "second word" "this has ""quotes"" in" and""this"" |
1420 | * |
1421 | * becomes |
1422 | * |
1423 | * >firstword< |
1424 | * >second word< |
1425 | * >this has "quotes" in< |
1426 | * >and"this"< |
1427 | */ |
4c7f0d61 |
1428 | while (*p) { |
3af97463 |
1429 | /* skip whitespace */ |
1430 | while (*p && (*p == ' ' || *p == '\t')) |
1431 | p++; |
1432 | /* mark start of word */ |
1433 | q = r = p; /* q sits at start, r writes word */ |
1434 | quoting = 0; |
1435 | while (*p) { |
1436 | if (!quoting && (*p == ' ' || *p == '\t')) |
1437 | break; /* reached end of word */ |
1438 | else if (*p == '"' && p[1] == '"') |
1439 | p += 2, *r++ = '"'; /* a literal quote */ |
1440 | else if (*p == '"') |
1441 | p++, quoting = !quoting; |
1442 | else |
1443 | *r++ = *p++; |
1444 | } |
1445 | if (*p) |
1446 | p++; /* skip over the whitespace */ |
1447 | *r = '\0'; |
1448 | if (cmd->nwords >= cmd->wordssize) { |
1449 | cmd->wordssize = cmd->nwords + 16; |
3d88e64d |
1450 | cmd->words = sresize(cmd->words, cmd->wordssize, char *); |
3af97463 |
1451 | } |
679539d7 |
1452 | cmd->words[cmd->nwords++] = dupstr(q); |
4c7f0d61 |
1453 | } |
4c7f0d61 |
1454 | } |
1455 | |
679539d7 |
1456 | sfree(line); |
4c7f0d61 |
1457 | /* |
1458 | * Now parse the first word and assign a function. |
1459 | */ |
1460 | |
1461 | if (cmd->nwords == 0) |
1462 | cmd->obey = sftp_cmd_null; |
1463 | else { |
bf5240cd |
1464 | const struct sftp_cmd_lookup *lookup; |
1465 | lookup = lookup_command(cmd->words[0]); |
1466 | if (!lookup) |
1467 | cmd->obey = sftp_cmd_unknown; |
1468 | else |
1469 | cmd->obey = lookup->obey; |
4c7f0d61 |
1470 | } |
1471 | |
1472 | return cmd; |
1473 | } |
1474 | |
774204f5 |
1475 | static int do_sftp_init(void) |
32874aea |
1476 | { |
1bc24185 |
1477 | struct sftp_packet *pktin; |
1478 | struct sftp_request *req, *rreq; |
1479 | |
4c7f0d61 |
1480 | /* |
1481 | * Do protocol initialisation. |
1482 | */ |
1483 | if (!fxp_init()) { |
1484 | fprintf(stderr, |
32874aea |
1485 | "Fatal: unable to initialise SFTP: %s\n", fxp_error()); |
774204f5 |
1486 | return 1; /* failure */ |
4c7f0d61 |
1487 | } |
1488 | |
1489 | /* |
1490 | * Find out where our home directory is. |
1491 | */ |
1bc24185 |
1492 | sftp_register(req = fxp_realpath_send(".")); |
1493 | rreq = sftp_find_request(pktin = sftp_recv()); |
1494 | assert(rreq == req); |
7b7de4f4 |
1495 | homedir = fxp_realpath_recv(pktin, rreq); |
1bc24185 |
1496 | |
4c7f0d61 |
1497 | if (!homedir) { |
1498 | fprintf(stderr, |
1499 | "Warning: failed to resolve home directory: %s\n", |
1500 | fxp_error()); |
1501 | homedir = dupstr("."); |
1502 | } else { |
1503 | printf("Remote working directory is %s\n", homedir); |
1504 | } |
1505 | pwd = dupstr(homedir); |
774204f5 |
1506 | return 0; |
fa3db767 |
1507 | } |
1508 | |
679539d7 |
1509 | void do_sftp_cleanup() |
1510 | { |
1511 | char ch; |
1512 | back->special(backhandle, TS_EOF); |
1513 | sftp_recvdata(&ch, 1); |
1514 | back->free(backhandle); |
1515 | sftp_cleanup_request(); |
1516 | if (pwd) { |
1517 | sfree(pwd); |
1518 | pwd = NULL; |
1519 | } |
1520 | if (homedir) { |
1521 | sfree(homedir); |
1522 | homedir = NULL; |
1523 | } |
1524 | } |
1525 | |
fa3db767 |
1526 | void do_sftp(int mode, int modeflags, char *batchfile) |
1527 | { |
1528 | FILE *fp; |
df49ff19 |
1529 | int ret; |
4c7f0d61 |
1530 | |
9954aaa3 |
1531 | /* |
1532 | * Batch mode? |
4c7f0d61 |
1533 | */ |
9954aaa3 |
1534 | if (mode == 0) { |
1535 | |
1536 | /* ------------------------------------------------------------------ |
1537 | * Now we're ready to do Real Stuff. |
1538 | */ |
1539 | while (1) { |
df49ff19 |
1540 | struct sftp_command *cmd; |
1541 | cmd = sftp_getcmd(stdin, 0, 0); |
1542 | if (!cmd) |
1543 | break; |
679539d7 |
1544 | ret = cmd->obey(cmd); |
1545 | if (cmd->words) { |
1546 | int i; |
1547 | for(i = 0; i < cmd->nwords; i++) |
1548 | sfree(cmd->words[i]); |
1549 | sfree(cmd->words); |
1550 | } |
1551 | sfree(cmd); |
1552 | if (ret < 0) |
df49ff19 |
1553 | break; |
bf5240cd |
1554 | } |
9954aaa3 |
1555 | } else { |
1556 | fp = fopen(batchfile, "r"); |
1557 | if (!fp) { |
bf5240cd |
1558 | printf("Fatal: unable to open %s\n", batchfile); |
1559 | return; |
9954aaa3 |
1560 | } |
1561 | while (1) { |
bf5240cd |
1562 | struct sftp_command *cmd; |
1563 | cmd = sftp_getcmd(fp, mode, modeflags); |
1564 | if (!cmd) |
1565 | break; |
df49ff19 |
1566 | ret = cmd->obey(cmd); |
1567 | if (ret < 0) |
bf5240cd |
1568 | break; |
df49ff19 |
1569 | if (ret == 0) { |
bf5240cd |
1570 | if (!(modeflags & 2)) |
9954aaa3 |
1571 | break; |
bf5240cd |
1572 | } |
9954aaa3 |
1573 | } |
bf5240cd |
1574 | fclose(fp); |
9954aaa3 |
1575 | |
4c7f0d61 |
1576 | } |
4a8fc3c4 |
1577 | } |
4c7f0d61 |
1578 | |
4a8fc3c4 |
1579 | /* ---------------------------------------------------------------------- |
1580 | * Dirty bits: integration with PuTTY. |
1581 | */ |
1582 | |
1583 | static int verbose = 0; |
1584 | |
7bedb13c |
1585 | /* |
4a8fc3c4 |
1586 | * Print an error message and perform a fatal exit. |
1587 | */ |
1588 | void fatalbox(char *fmt, ...) |
1589 | { |
57356d63 |
1590 | char *str, *str2; |
4a8fc3c4 |
1591 | va_list ap; |
1592 | va_start(ap, fmt); |
57356d63 |
1593 | str = dupvprintf(fmt, ap); |
1594 | str2 = dupcat("Fatal: ", str, "\n", NULL); |
1595 | sfree(str); |
4a8fc3c4 |
1596 | va_end(ap); |
57356d63 |
1597 | fputs(str2, stderr); |
1598 | sfree(str2); |
4a8fc3c4 |
1599 | |
93b581bd |
1600 | cleanup_exit(1); |
4a8fc3c4 |
1601 | } |
1709795f |
1602 | void modalfatalbox(char *fmt, ...) |
1603 | { |
57356d63 |
1604 | char *str, *str2; |
1709795f |
1605 | va_list ap; |
1606 | va_start(ap, fmt); |
57356d63 |
1607 | str = dupvprintf(fmt, ap); |
1608 | str2 = dupcat("Fatal: ", str, "\n", NULL); |
1609 | sfree(str); |
1709795f |
1610 | va_end(ap); |
57356d63 |
1611 | fputs(str2, stderr); |
1612 | sfree(str2); |
1709795f |
1613 | |
1614 | cleanup_exit(1); |
1615 | } |
a8327734 |
1616 | void connection_fatal(void *frontend, char *fmt, ...) |
4a8fc3c4 |
1617 | { |
57356d63 |
1618 | char *str, *str2; |
4a8fc3c4 |
1619 | va_list ap; |
1620 | va_start(ap, fmt); |
57356d63 |
1621 | str = dupvprintf(fmt, ap); |
1622 | str2 = dupcat("Fatal: ", str, "\n", NULL); |
1623 | sfree(str); |
4a8fc3c4 |
1624 | va_end(ap); |
57356d63 |
1625 | fputs(str2, stderr); |
1626 | sfree(str2); |
4a8fc3c4 |
1627 | |
93b581bd |
1628 | cleanup_exit(1); |
4a8fc3c4 |
1629 | } |
1630 | |
6b78788a |
1631 | void ldisc_send(void *handle, char *buf, int len, int interactive) |
32874aea |
1632 | { |
4a8fc3c4 |
1633 | /* |
1634 | * This is only here because of the calls to ldisc_send(NULL, |
1635 | * 0) in ssh.c. Nothing in PSFTP actually needs to use the |
1636 | * ldisc as an ldisc. So if we get called with any real data, I |
1637 | * want to know about it. |
4c7f0d61 |
1638 | */ |
4a8fc3c4 |
1639 | assert(len == 0); |
1640 | } |
1641 | |
1642 | /* |
c44bf5bd |
1643 | * In psftp, all agent requests should be synchronous, so this is a |
1644 | * never-called stub. |
1645 | */ |
1646 | void agent_schedule_callback(void (*callback)(void *, void *, int), |
1647 | void *callback_ctx, void *data, int len) |
1648 | { |
1649 | assert(!"We shouldn't be here"); |
1650 | } |
1651 | |
1652 | /* |
4a8fc3c4 |
1653 | * Receive a block of data from the SSH link. Block until all data |
1654 | * is available. |
1655 | * |
1656 | * To do this, we repeatedly call the SSH protocol module, with our |
1657 | * own trap in from_backend() to catch the data that comes back. We |
1658 | * do this until we have enough data. |
1659 | */ |
1660 | |
32874aea |
1661 | static unsigned char *outptr; /* where to put the data */ |
1662 | static unsigned outlen; /* how much data required */ |
4a8fc3c4 |
1663 | static unsigned char *pending = NULL; /* any spare data */ |
32874aea |
1664 | static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */ |
9fab77dc |
1665 | int from_backend(void *frontend, int is_stderr, const char *data, int datalen) |
32874aea |
1666 | { |
1667 | unsigned char *p = (unsigned char *) data; |
1668 | unsigned len = (unsigned) datalen; |
4a8fc3c4 |
1669 | |
1670 | /* |
1671 | * stderr data is just spouted to local stderr and otherwise |
1672 | * ignored. |
1673 | */ |
1674 | if (is_stderr) { |
bfa5400d |
1675 | if (len > 0) |
1676 | fwrite(data, 1, len, stderr); |
5471d09a |
1677 | return 0; |
4a8fc3c4 |
1678 | } |
1679 | |
1680 | /* |
1681 | * If this is before the real session begins, just return. |
1682 | */ |
1683 | if (!outptr) |
5471d09a |
1684 | return 0; |
4a8fc3c4 |
1685 | |
bfa5400d |
1686 | if ((outlen > 0) && (len > 0)) { |
32874aea |
1687 | unsigned used = outlen; |
1688 | if (used > len) |
1689 | used = len; |
1690 | memcpy(outptr, p, used); |
1691 | outptr += used; |
1692 | outlen -= used; |
1693 | p += used; |
1694 | len -= used; |
4a8fc3c4 |
1695 | } |
1696 | |
1697 | if (len > 0) { |
32874aea |
1698 | if (pendsize < pendlen + len) { |
1699 | pendsize = pendlen + len + 4096; |
3d88e64d |
1700 | pending = sresize(pending, pendsize, unsigned char); |
32874aea |
1701 | } |
1702 | memcpy(pending + pendlen, p, len); |
1703 | pendlen += len; |
4a8fc3c4 |
1704 | } |
5471d09a |
1705 | |
1706 | return 0; |
4a8fc3c4 |
1707 | } |
32874aea |
1708 | int sftp_recvdata(char *buf, int len) |
1709 | { |
1710 | outptr = (unsigned char *) buf; |
4a8fc3c4 |
1711 | outlen = len; |
1712 | |
1713 | /* |
1714 | * See if the pending-input block contains some of what we |
1715 | * need. |
1716 | */ |
1717 | if (pendlen > 0) { |
32874aea |
1718 | unsigned pendused = pendlen; |
1719 | if (pendused > outlen) |
1720 | pendused = outlen; |
4a8fc3c4 |
1721 | memcpy(outptr, pending, pendused); |
32874aea |
1722 | memmove(pending, pending + pendused, pendlen - pendused); |
4a8fc3c4 |
1723 | outptr += pendused; |
1724 | outlen -= pendused; |
32874aea |
1725 | pendlen -= pendused; |
1726 | if (pendlen == 0) { |
1727 | pendsize = 0; |
1728 | sfree(pending); |
1729 | pending = NULL; |
1730 | } |
1731 | if (outlen == 0) |
1732 | return 1; |
4a8fc3c4 |
1733 | } |
1734 | |
1735 | while (outlen > 0) { |
d6cc41e6 |
1736 | if (ssh_sftp_loop_iteration() < 0) |
32874aea |
1737 | return 0; /* doom */ |
4a8fc3c4 |
1738 | } |
1739 | |
1740 | return 1; |
1741 | } |
32874aea |
1742 | int sftp_senddata(char *buf, int len) |
1743 | { |
51470298 |
1744 | back->send(backhandle, (unsigned char *) buf, len); |
4a8fc3c4 |
1745 | return 1; |
1746 | } |
1747 | |
1748 | /* |
4a8fc3c4 |
1749 | * Short description of parameters. |
1750 | */ |
1751 | static void usage(void) |
1752 | { |
1753 | printf("PuTTY Secure File Transfer (SFTP) client\n"); |
1754 | printf("%s\n", ver); |
1755 | printf("Usage: psftp [options] user@host\n"); |
1756 | printf("Options:\n"); |
9954aaa3 |
1757 | printf(" -b file use specified batchfile\n"); |
1758 | printf(" -bc output batchfile commands\n"); |
1759 | printf(" -be don't stop batchfile processing if errors\n"); |
4a8fc3c4 |
1760 | printf(" -v show verbose messages\n"); |
e2a197cf |
1761 | printf(" -load sessname Load settings from saved session\n"); |
1762 | printf(" -l user connect with specified username\n"); |
4a8fc3c4 |
1763 | printf(" -P port connect to specified port\n"); |
1764 | printf(" -pw passw login with specified password\n"); |
e2a197cf |
1765 | printf(" -1 -2 force use of particular SSH protocol version\n"); |
1766 | printf(" -C enable compression\n"); |
1767 | printf(" -i key private key file for authentication\n"); |
1768 | printf(" -batch disable all interactive prompts\n"); |
93b581bd |
1769 | cleanup_exit(1); |
4a8fc3c4 |
1770 | } |
1771 | |
1772 | /* |
fa3db767 |
1773 | * Connect to a host. |
4a8fc3c4 |
1774 | */ |
fa3db767 |
1775 | static int psftp_connect(char *userhost, char *user, int portnumber) |
4a8fc3c4 |
1776 | { |
fa3db767 |
1777 | char *host, *realhost; |
cbe2d68f |
1778 | const char *err; |
b51259f6 |
1779 | void *logctx; |
4a8fc3c4 |
1780 | |
1781 | /* Separate host and username */ |
1782 | host = userhost; |
1783 | host = strrchr(host, '@'); |
1784 | if (host == NULL) { |
1785 | host = userhost; |
1786 | } else { |
1787 | *host++ = '\0'; |
1788 | if (user) { |
32874aea |
1789 | printf("psftp: multiple usernames specified; using \"%s\"\n", |
1790 | user); |
4a8fc3c4 |
1791 | } else |
1792 | user = userhost; |
1793 | } |
1794 | |
1795 | /* Try to load settings for this host */ |
1796 | do_defaults(host, &cfg); |
1797 | if (cfg.host[0] == '\0') { |
1798 | /* No settings for this host; use defaults */ |
32874aea |
1799 | do_defaults(NULL, &cfg); |
1800 | strncpy(cfg.host, host, sizeof(cfg.host) - 1); |
1801 | cfg.host[sizeof(cfg.host) - 1] = '\0'; |
f133db8e |
1802 | } |
1803 | |
1804 | /* |
1805 | * Force use of SSH. (If they got the protocol wrong we assume the |
1806 | * port is useless too.) |
1807 | */ |
1808 | if (cfg.protocol != PROT_SSH) { |
1809 | cfg.protocol = PROT_SSH; |
1810 | cfg.port = 22; |
4a8fc3c4 |
1811 | } |
1812 | |
449925a6 |
1813 | /* |
c0a81592 |
1814 | * Enact command-line overrides. |
1815 | */ |
5555d393 |
1816 | cmdline_run_saved(&cfg); |
c0a81592 |
1817 | |
1818 | /* |
449925a6 |
1819 | * Trim leading whitespace off the hostname if it's there. |
1820 | */ |
1821 | { |
1822 | int space = strspn(cfg.host, " \t"); |
1823 | memmove(cfg.host, cfg.host+space, 1+strlen(cfg.host)-space); |
1824 | } |
1825 | |
1826 | /* See if host is of the form user@host */ |
1827 | if (cfg.host[0] != '\0') { |
1828 | char *atsign = strchr(cfg.host, '@'); |
1829 | /* Make sure we're not overflowing the user field */ |
1830 | if (atsign) { |
1831 | if (atsign - cfg.host < sizeof cfg.username) { |
1832 | strncpy(cfg.username, cfg.host, atsign - cfg.host); |
1833 | cfg.username[atsign - cfg.host] = '\0'; |
1834 | } |
1835 | memmove(cfg.host, atsign + 1, 1 + strlen(atsign + 1)); |
1836 | } |
1837 | } |
1838 | |
1839 | /* |
1840 | * Trim a colon suffix off the hostname if it's there. |
1841 | */ |
1842 | cfg.host[strcspn(cfg.host, ":")] = '\0'; |
1843 | |
cae0c023 |
1844 | /* |
1845 | * Remove any remaining whitespace from the hostname. |
1846 | */ |
1847 | { |
1848 | int p1 = 0, p2 = 0; |
1849 | while (cfg.host[p2] != '\0') { |
1850 | if (cfg.host[p2] != ' ' && cfg.host[p2] != '\t') { |
1851 | cfg.host[p1] = cfg.host[p2]; |
1852 | p1++; |
1853 | } |
1854 | p2++; |
1855 | } |
1856 | cfg.host[p1] = '\0'; |
1857 | } |
1858 | |
4a8fc3c4 |
1859 | /* Set username */ |
1860 | if (user != NULL && user[0] != '\0') { |
32874aea |
1861 | strncpy(cfg.username, user, sizeof(cfg.username) - 1); |
1862 | cfg.username[sizeof(cfg.username) - 1] = '\0'; |
4a8fc3c4 |
1863 | } |
1864 | if (!cfg.username[0]) { |
1865 | printf("login as: "); |
f55eceed |
1866 | fflush(stdout); |
4a8fc3c4 |
1867 | if (!fgets(cfg.username, sizeof(cfg.username), stdin)) { |
1868 | fprintf(stderr, "psftp: aborting\n"); |
93b581bd |
1869 | cleanup_exit(1); |
4a8fc3c4 |
1870 | } else { |
1871 | int len = strlen(cfg.username); |
32874aea |
1872 | if (cfg.username[len - 1] == '\n') |
1873 | cfg.username[len - 1] = '\0'; |
4a8fc3c4 |
1874 | } |
1875 | } |
1876 | |
4a8fc3c4 |
1877 | if (portnumber) |
1878 | cfg.port = portnumber; |
1879 | |
1880 | /* SFTP uses SSH2 by default always */ |
1881 | cfg.sshprot = 2; |
1882 | |
d27b4a18 |
1883 | /* |
1884 | * Disable scary things which shouldn't be enabled for simple |
1885 | * things like SCP and SFTP: agent forwarding, port forwarding, |
1886 | * X forwarding. |
1887 | */ |
1888 | cfg.x11_forward = 0; |
1889 | cfg.agentfwd = 0; |
1890 | cfg.portfwd[0] = cfg.portfwd[1] = '\0'; |
1891 | |
bebf22d0 |
1892 | /* Set up subsystem name. */ |
4a8fc3c4 |
1893 | strcpy(cfg.remote_cmd, "sftp"); |
1894 | cfg.ssh_subsys = TRUE; |
1895 | cfg.nopty = TRUE; |
1896 | |
bebf22d0 |
1897 | /* |
1898 | * Set up fallback option, for SSH1 servers or servers with the |
1899 | * sftp subsystem not enabled but the server binary installed |
1900 | * in the usual place. We only support fallback on Unix |
248c0c5a |
1901 | * systems, and we use a kludgy piece of shellery which should |
1902 | * try to find sftp-server in various places (the obvious |
1903 | * systemwide spots /usr/lib and /usr/local/lib, and then the |
1904 | * user's PATH) and finally give up. |
bebf22d0 |
1905 | * |
248c0c5a |
1906 | * test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server |
1907 | * test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server |
1908 | * exec sftp-server |
bebf22d0 |
1909 | * |
1910 | * the idea being that this will attempt to use either of the |
1911 | * obvious pathnames and then give up, and when it does give up |
1912 | * it will print the preferred pathname in the error messages. |
1913 | */ |
1914 | cfg.remote_cmd_ptr2 = |
248c0c5a |
1915 | "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n" |
1916 | "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n" |
1917 | "exec sftp-server"; |
bebf22d0 |
1918 | cfg.ssh_subsys2 = FALSE; |
1919 | |
4a8fc3c4 |
1920 | back = &ssh_backend; |
1921 | |
86916870 |
1922 | err = back->init(NULL, &backhandle, &cfg, cfg.host, cfg.port, &realhost,0); |
4a8fc3c4 |
1923 | if (err != NULL) { |
fa3db767 |
1924 | fprintf(stderr, "ssh_init: %s\n", err); |
4a8fc3c4 |
1925 | return 1; |
1926 | } |
c229ef97 |
1927 | logctx = log_init(NULL, &cfg); |
a8327734 |
1928 | back->provide_logctx(backhandle, logctx); |
d3fef4a5 |
1929 | console_provide_logctx(logctx); |
d6cc41e6 |
1930 | while (!back->sendok(backhandle)) { |
1931 | if (ssh_sftp_loop_iteration() < 0) { |
1932 | fprintf(stderr, "ssh_init: error during SSH connection setup\n"); |
1933 | return 1; |
1934 | } |
1935 | } |
4a8fc3c4 |
1936 | if (verbose && realhost != NULL) |
1937 | printf("Connected to %s\n", realhost); |
679539d7 |
1938 | if (realhost != NULL) |
1939 | sfree(realhost); |
fa3db767 |
1940 | return 0; |
1941 | } |
1942 | |
c0a81592 |
1943 | void cmdline_error(char *p, ...) |
1944 | { |
1945 | va_list ap; |
86256dc6 |
1946 | fprintf(stderr, "psftp: "); |
c0a81592 |
1947 | va_start(ap, p); |
1948 | vfprintf(stderr, p, ap); |
1949 | va_end(ap); |
86256dc6 |
1950 | fprintf(stderr, "\n try typing \"psftp -h\" for help\n"); |
c0a81592 |
1951 | exit(1); |
1952 | } |
1953 | |
fa3db767 |
1954 | /* |
1955 | * Main program. Parse arguments etc. |
1956 | */ |
d6cc41e6 |
1957 | int psftp_main(int argc, char *argv[]) |
fa3db767 |
1958 | { |
1959 | int i; |
1960 | int portnumber = 0; |
1961 | char *userhost, *user; |
1962 | int mode = 0; |
1963 | int modeflags = 0; |
1964 | char *batchfile = NULL; |
86256dc6 |
1965 | int errors = 0; |
fa3db767 |
1966 | |
b51259f6 |
1967 | flags = FLAG_STDERR | FLAG_INTERACTIVE |
1968 | #ifdef FLAG_SYNCAGENT |
1969 | | FLAG_SYNCAGENT |
1970 | #endif |
1971 | ; |
c0a81592 |
1972 | cmdline_tooltype = TOOLTYPE_FILETRANSFER; |
ff2ae367 |
1973 | ssh_get_line = &console_get_line; |
fa3db767 |
1974 | sk_init(); |
1975 | |
1976 | userhost = user = NULL; |
1977 | |
86256dc6 |
1978 | errors = 0; |
fa3db767 |
1979 | for (i = 1; i < argc; i++) { |
c0a81592 |
1980 | int ret; |
fa3db767 |
1981 | if (argv[i][0] != '-') { |
c0a81592 |
1982 | if (userhost) |
1983 | usage(); |
1984 | else |
1985 | userhost = dupstr(argv[i]); |
1986 | continue; |
1987 | } |
5555d393 |
1988 | ret = cmdline_process_param(argv[i], i+1<argc?argv[i+1]:NULL, 1, &cfg); |
c0a81592 |
1989 | if (ret == -2) { |
1990 | cmdline_error("option \"%s\" requires an argument", argv[i]); |
1991 | } else if (ret == 2) { |
1992 | i++; /* skip next argument */ |
1993 | } else if (ret == 1) { |
1994 | /* We have our own verbosity in addition to `flags'. */ |
1995 | if (flags & FLAG_VERBOSE) |
1996 | verbose = 1; |
fa3db767 |
1997 | } else if (strcmp(argv[i], "-h") == 0 || |
1998 | strcmp(argv[i], "-?") == 0) { |
1999 | usage(); |
c0a81592 |
2000 | } else if (strcmp(argv[i], "-batch") == 0) { |
2001 | console_batch_mode = 1; |
fa3db767 |
2002 | } else if (strcmp(argv[i], "-b") == 0 && i + 1 < argc) { |
2003 | mode = 1; |
2004 | batchfile = argv[++i]; |
d13c2ee9 |
2005 | } else if (strcmp(argv[i], "-bc") == 0) { |
fa3db767 |
2006 | modeflags = modeflags | 1; |
d13c2ee9 |
2007 | } else if (strcmp(argv[i], "-be") == 0) { |
fa3db767 |
2008 | modeflags = modeflags | 2; |
2009 | } else if (strcmp(argv[i], "--") == 0) { |
2010 | i++; |
2011 | break; |
2012 | } else { |
86256dc6 |
2013 | cmdline_error("unknown option \"%s\"", argv[i]); |
fa3db767 |
2014 | } |
2015 | } |
2016 | argc -= i; |
2017 | argv += i; |
2018 | back = NULL; |
2019 | |
2020 | /* |
2021 | * If a user@host string has already been provided, connect to |
2022 | * it now. |
2023 | */ |
2024 | if (userhost) { |
679539d7 |
2025 | int ret; |
2026 | ret = psftp_connect(userhost, user, portnumber); |
2027 | sfree(userhost); |
2028 | if (ret) |
fa3db767 |
2029 | return 1; |
774204f5 |
2030 | if (do_sftp_init()) |
2031 | return 1; |
fa3db767 |
2032 | } else { |
2033 | printf("psftp: no hostname specified; use \"open host.name\"" |
679539d7 |
2034 | " to connect\n"); |
fa3db767 |
2035 | } |
4c7f0d61 |
2036 | |
9954aaa3 |
2037 | do_sftp(mode, modeflags, batchfile); |
4a8fc3c4 |
2038 | |
51470298 |
2039 | if (back != NULL && back->socket(backhandle) != NULL) { |
4a8fc3c4 |
2040 | char ch; |
51470298 |
2041 | back->special(backhandle, TS_EOF); |
4a8fc3c4 |
2042 | sftp_recvdata(&ch, 1); |
2043 | } |
4a8fc3c4 |
2044 | random_save_seed(); |
679539d7 |
2045 | cmdline_cleanup(); |
2046 | console_provide_logctx(NULL); |
2047 | do_sftp_cleanup(); |
2048 | backhandle = NULL; |
2049 | back = NULL; |
2050 | sk_cleanup(); |
4a8fc3c4 |
2051 | |
4c7f0d61 |
2052 | return 0; |
2053 | } |