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); |
fa3db767 |
28 | |
4c7f0d61 |
29 | /* ---------------------------------------------------------------------- |
4c7f0d61 |
30 | * sftp client state. |
31 | */ |
32 | |
33 | char *pwd, *homedir; |
6b78788a |
34 | static Backend *back; |
35 | static void *backhandle; |
3ea863a3 |
36 | static Config cfg; |
4c7f0d61 |
37 | |
38 | /* ---------------------------------------------------------------------- |
39 | * Higher-level helper functions used in commands. |
40 | */ |
41 | |
42 | /* |
f9e162aa |
43 | * Attempt to canonify a pathname starting from the pwd. If |
44 | * canonification fails, at least fall back to returning a _valid_ |
45 | * pathname (though it may be ugly, eg /home/simon/../foobar). |
4c7f0d61 |
46 | */ |
32874aea |
47 | char *canonify(char *name) |
48 | { |
f9e162aa |
49 | char *fullname, *canonname; |
1bc24185 |
50 | struct sftp_packet *pktin; |
51 | struct sftp_request *req, *rreq; |
4a8fc3c4 |
52 | |
f9e162aa |
53 | if (name[0] == '/') { |
54 | fullname = dupstr(name); |
55 | } else { |
4a8fc3c4 |
56 | char *slash; |
32874aea |
57 | if (pwd[strlen(pwd) - 1] == '/') |
4a8fc3c4 |
58 | slash = ""; |
59 | else |
60 | slash = "/"; |
61 | fullname = dupcat(pwd, slash, name, NULL); |
f9e162aa |
62 | } |
4a8fc3c4 |
63 | |
1bc24185 |
64 | sftp_register(req = fxp_realpath_send(fullname)); |
65 | rreq = sftp_find_request(pktin = sftp_recv()); |
66 | assert(rreq == req); |
7b7de4f4 |
67 | canonname = fxp_realpath_recv(pktin, rreq); |
4a8fc3c4 |
68 | |
f9e162aa |
69 | if (canonname) { |
70 | sfree(fullname); |
71 | return canonname; |
50d7e054 |
72 | } else { |
32874aea |
73 | /* |
74 | * Attempt number 2. Some FXP_REALPATH implementations |
75 | * (glibc-based ones, in particular) require the _whole_ |
76 | * path to point to something that exists, whereas others |
77 | * (BSD-based) only require all but the last component to |
78 | * exist. So if the first call failed, we should strip off |
79 | * everything from the last slash onwards and try again, |
80 | * then put the final component back on. |
81 | * |
82 | * Special cases: |
83 | * |
84 | * - if the last component is "/." or "/..", then we don't |
85 | * bother trying this because there's no way it can work. |
86 | * |
87 | * - if the thing actually ends with a "/", we remove it |
88 | * before we start. Except if the string is "/" itself |
89 | * (although I can't see why we'd have got here if so, |
90 | * because surely "/" would have worked the first |
91 | * time?), in which case we don't bother. |
92 | * |
93 | * - if there's no slash in the string at all, give up in |
94 | * confusion (we expect at least one because of the way |
95 | * we constructed the string). |
96 | */ |
97 | |
98 | int i; |
99 | char *returnname; |
100 | |
101 | i = strlen(fullname); |
102 | if (i > 2 && fullname[i - 1] == '/') |
103 | fullname[--i] = '\0'; /* strip trailing / unless at pos 0 */ |
104 | while (i > 0 && fullname[--i] != '/'); |
105 | |
106 | /* |
107 | * Give up on special cases. |
108 | */ |
109 | if (fullname[i] != '/' || /* no slash at all */ |
110 | !strcmp(fullname + i, "/.") || /* ends in /. */ |
111 | !strcmp(fullname + i, "/..") || /* ends in /.. */ |
112 | !strcmp(fullname, "/")) { |
113 | return fullname; |
114 | } |
115 | |
116 | /* |
117 | * Now i points at the slash. Deal with the final special |
118 | * case i==0 (ie the whole path was "/nonexistentfile"). |
119 | */ |
120 | fullname[i] = '\0'; /* separate the string */ |
121 | if (i == 0) { |
1bc24185 |
122 | sftp_register(req = fxp_realpath_send("/")); |
32874aea |
123 | } else { |
1bc24185 |
124 | sftp_register(req = fxp_realpath_send(fullname)); |
32874aea |
125 | } |
1bc24185 |
126 | rreq = sftp_find_request(pktin = sftp_recv()); |
127 | assert(rreq == req); |
7b7de4f4 |
128 | canonname = fxp_realpath_recv(pktin, rreq); |
32874aea |
129 | |
130 | if (!canonname) |
131 | return fullname; /* even that failed; give up */ |
132 | |
133 | /* |
134 | * We have a canonical name for all but the last path |
135 | * component. Concatenate the last component and return. |
136 | */ |
137 | returnname = dupcat(canonname, |
138 | canonname[strlen(canonname) - 1] == |
139 | '/' ? "" : "/", fullname + i + 1, NULL); |
140 | sfree(fullname); |
141 | sfree(canonname); |
142 | return returnname; |
50d7e054 |
143 | } |
4c7f0d61 |
144 | } |
145 | |
dcf8495c |
146 | /* |
147 | * Return a pointer to the portion of str that comes after the last |
148 | * slash (or backslash or colon, if `local' is TRUE). |
149 | */ |
150 | static char *stripslashes(char *str, int local) |
151 | { |
152 | char *p; |
153 | |
154 | if (local) { |
155 | p = strchr(str, ':'); |
156 | if (p) str = p+1; |
157 | } |
158 | |
159 | p = strrchr(str, '/'); |
160 | if (p) str = p+1; |
161 | |
162 | if (local) { |
163 | p = strrchr(str, '\\'); |
164 | if (p) str = p+1; |
165 | } |
166 | |
167 | return str; |
168 | } |
169 | |
4c7f0d61 |
170 | /* ---------------------------------------------------------------------- |
171 | * Actual sftp commands. |
172 | */ |
173 | struct sftp_command { |
174 | char **words; |
175 | int nwords, wordssize; |
32874aea |
176 | int (*obey) (struct sftp_command *); /* returns <0 to quit */ |
4c7f0d61 |
177 | }; |
178 | |
32874aea |
179 | int sftp_cmd_null(struct sftp_command *cmd) |
180 | { |
df49ff19 |
181 | return 1; /* success */ |
4c7f0d61 |
182 | } |
183 | |
32874aea |
184 | int sftp_cmd_unknown(struct sftp_command *cmd) |
185 | { |
4c7f0d61 |
186 | printf("psftp: unknown command \"%s\"\n", cmd->words[0]); |
df49ff19 |
187 | return 0; /* failure */ |
4c7f0d61 |
188 | } |
189 | |
32874aea |
190 | int sftp_cmd_quit(struct sftp_command *cmd) |
191 | { |
4c7f0d61 |
192 | return -1; |
193 | } |
194 | |
195 | /* |
196 | * List a directory. If no arguments are given, list pwd; otherwise |
197 | * list the directory given in words[1]. |
198 | */ |
32874aea |
199 | static int sftp_ls_compare(const void *av, const void *bv) |
200 | { |
7d2c1789 |
201 | const struct fxp_name *const *a = (const struct fxp_name *const *) av; |
202 | const struct fxp_name *const *b = (const struct fxp_name *const *) bv; |
203 | return strcmp((*a)->filename, (*b)->filename); |
4c7f0d61 |
204 | } |
32874aea |
205 | int sftp_cmd_ls(struct sftp_command *cmd) |
206 | { |
4c7f0d61 |
207 | struct fxp_handle *dirh; |
208 | struct fxp_names *names; |
7d2c1789 |
209 | struct fxp_name **ournames; |
4c7f0d61 |
210 | int nnames, namesize; |
211 | char *dir, *cdir; |
1bc24185 |
212 | struct sftp_packet *pktin; |
213 | struct sftp_request *req, *rreq; |
4c7f0d61 |
214 | int i; |
215 | |
fa3db767 |
216 | if (back == NULL) { |
217 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
218 | return 0; |
219 | } |
220 | |
4c7f0d61 |
221 | if (cmd->nwords < 2) |
222 | dir = "."; |
223 | else |
224 | dir = cmd->words[1]; |
225 | |
226 | cdir = canonify(dir); |
227 | if (!cdir) { |
228 | printf("%s: %s\n", dir, fxp_error()); |
229 | return 0; |
230 | } |
231 | |
232 | printf("Listing directory %s\n", cdir); |
233 | |
1bc24185 |
234 | sftp_register(req = fxp_opendir_send(cdir)); |
235 | rreq = sftp_find_request(pktin = sftp_recv()); |
236 | assert(rreq == req); |
7b7de4f4 |
237 | dirh = fxp_opendir_recv(pktin, rreq); |
1bc24185 |
238 | |
4c7f0d61 |
239 | if (dirh == NULL) { |
240 | printf("Unable to open %s: %s\n", dir, fxp_error()); |
241 | } else { |
242 | nnames = namesize = 0; |
243 | ournames = NULL; |
244 | |
245 | while (1) { |
246 | |
1bc24185 |
247 | sftp_register(req = fxp_readdir_send(dirh)); |
248 | rreq = sftp_find_request(pktin = sftp_recv()); |
249 | assert(rreq == req); |
7b7de4f4 |
250 | names = fxp_readdir_recv(pktin, rreq); |
1bc24185 |
251 | |
4c7f0d61 |
252 | if (names == NULL) { |
253 | if (fxp_error_type() == SSH_FX_EOF) |
254 | break; |
255 | printf("Reading directory %s: %s\n", dir, fxp_error()); |
256 | break; |
257 | } |
258 | if (names->nnames == 0) { |
259 | fxp_free_names(names); |
260 | break; |
261 | } |
262 | |
263 | if (nnames + names->nnames >= namesize) { |
264 | namesize += names->nnames + 128; |
3d88e64d |
265 | ournames = sresize(ournames, namesize, struct fxp_name *); |
4c7f0d61 |
266 | } |
267 | |
268 | for (i = 0; i < names->nnames; i++) |
7d2c1789 |
269 | ournames[nnames++] = fxp_dup_name(&names->names[i]); |
4c7f0d61 |
270 | |
4c7f0d61 |
271 | fxp_free_names(names); |
272 | } |
1bc24185 |
273 | sftp_register(req = fxp_close_send(dirh)); |
274 | rreq = sftp_find_request(pktin = sftp_recv()); |
275 | assert(rreq == req); |
7b7de4f4 |
276 | fxp_close_recv(pktin, rreq); |
4c7f0d61 |
277 | |
278 | /* |
279 | * Now we have our filenames. Sort them by actual file |
280 | * name, and then output the longname parts. |
281 | */ |
282 | qsort(ournames, nnames, sizeof(*ournames), sftp_ls_compare); |
283 | |
284 | /* |
285 | * And print them. |
286 | */ |
7d2c1789 |
287 | for (i = 0; i < nnames; i++) { |
288 | printf("%s\n", ournames[i]->longname); |
289 | fxp_free_name(ournames[i]); |
290 | } |
291 | sfree(ournames); |
4c7f0d61 |
292 | } |
293 | |
294 | sfree(cdir); |
295 | |
df49ff19 |
296 | return 1; |
4c7f0d61 |
297 | } |
298 | |
299 | /* |
300 | * Change directories. We do this by canonifying the new name, then |
301 | * trying to OPENDIR it. Only if that succeeds do we set the new pwd. |
302 | */ |
32874aea |
303 | int sftp_cmd_cd(struct sftp_command *cmd) |
304 | { |
4c7f0d61 |
305 | struct fxp_handle *dirh; |
1bc24185 |
306 | struct sftp_packet *pktin; |
307 | struct sftp_request *req, *rreq; |
4c7f0d61 |
308 | char *dir; |
309 | |
fa3db767 |
310 | if (back == NULL) { |
311 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
312 | return 0; |
313 | } |
314 | |
4c7f0d61 |
315 | if (cmd->nwords < 2) |
f9e162aa |
316 | dir = dupstr(homedir); |
4c7f0d61 |
317 | else |
318 | dir = canonify(cmd->words[1]); |
319 | |
320 | if (!dir) { |
321 | printf("%s: %s\n", dir, fxp_error()); |
322 | return 0; |
323 | } |
324 | |
1bc24185 |
325 | sftp_register(req = fxp_opendir_send(dir)); |
326 | rreq = sftp_find_request(pktin = sftp_recv()); |
327 | assert(rreq == req); |
7b7de4f4 |
328 | dirh = fxp_opendir_recv(pktin, rreq); |
1bc24185 |
329 | |
4c7f0d61 |
330 | if (!dirh) { |
331 | printf("Directory %s: %s\n", dir, fxp_error()); |
332 | sfree(dir); |
333 | return 0; |
334 | } |
335 | |
1bc24185 |
336 | sftp_register(req = fxp_close_send(dirh)); |
337 | rreq = sftp_find_request(pktin = sftp_recv()); |
338 | assert(rreq == req); |
7b7de4f4 |
339 | fxp_close_recv(pktin, rreq); |
4c7f0d61 |
340 | |
341 | sfree(pwd); |
342 | pwd = dir; |
343 | printf("Remote directory is now %s\n", pwd); |
344 | |
df49ff19 |
345 | return 1; |
4c7f0d61 |
346 | } |
347 | |
348 | /* |
4f2b387f |
349 | * Print current directory. Easy as pie. |
350 | */ |
351 | int sftp_cmd_pwd(struct sftp_command *cmd) |
352 | { |
fa3db767 |
353 | if (back == NULL) { |
354 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
355 | return 0; |
356 | } |
357 | |
4f2b387f |
358 | printf("Remote directory is %s\n", pwd); |
df49ff19 |
359 | return 1; |
4f2b387f |
360 | } |
361 | |
362 | /* |
d92624dc |
363 | * Get a file and save it at the local end. We have two very |
364 | * similar commands here: `get' and `reget', which differ in that |
365 | * `reget' checks for the existence of the destination file and |
366 | * starts from where a previous aborted transfer left off. |
4c7f0d61 |
367 | */ |
d92624dc |
368 | int sftp_general_get(struct sftp_command *cmd, int restart) |
32874aea |
369 | { |
4c7f0d61 |
370 | struct fxp_handle *fh; |
1bc24185 |
371 | struct sftp_packet *pktin; |
372 | struct sftp_request *req, *rreq; |
4c7f0d61 |
373 | char *fname, *outfname; |
374 | uint64 offset; |
375 | FILE *fp; |
df49ff19 |
376 | int ret; |
4c7f0d61 |
377 | |
fa3db767 |
378 | if (back == NULL) { |
379 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
380 | return 0; |
381 | } |
382 | |
4c7f0d61 |
383 | if (cmd->nwords < 2) { |
384 | printf("get: expects a filename\n"); |
385 | return 0; |
386 | } |
387 | |
388 | fname = canonify(cmd->words[1]); |
389 | if (!fname) { |
390 | printf("%s: %s\n", cmd->words[1], fxp_error()); |
391 | return 0; |
392 | } |
dcf8495c |
393 | outfname = (cmd->nwords == 2 ? |
394 | stripslashes(cmd->words[1], 0) : cmd->words[2]); |
4c7f0d61 |
395 | |
1bc24185 |
396 | sftp_register(req = fxp_open_send(fname, SSH_FXF_READ)); |
397 | rreq = sftp_find_request(pktin = sftp_recv()); |
398 | assert(rreq == req); |
7b7de4f4 |
399 | fh = fxp_open_recv(pktin, rreq); |
1bc24185 |
400 | |
4c7f0d61 |
401 | if (!fh) { |
402 | printf("%s: %s\n", fname, fxp_error()); |
403 | sfree(fname); |
404 | return 0; |
405 | } |
d92624dc |
406 | |
407 | if (restart) { |
408 | fp = fopen(outfname, "rb+"); |
409 | } else { |
410 | fp = fopen(outfname, "wb"); |
411 | } |
412 | |
4c7f0d61 |
413 | if (!fp) { |
414 | printf("local: unable to open %s\n", outfname); |
1bc24185 |
415 | |
416 | sftp_register(req = fxp_close_send(fh)); |
417 | rreq = sftp_find_request(pktin = sftp_recv()); |
418 | assert(rreq == req); |
7b7de4f4 |
419 | fxp_close_recv(pktin, rreq); |
1bc24185 |
420 | |
4c7f0d61 |
421 | sfree(fname); |
422 | return 0; |
423 | } |
424 | |
d92624dc |
425 | if (restart) { |
426 | long posn; |
427 | fseek(fp, 0L, SEEK_END); |
428 | posn = ftell(fp); |
429 | printf("reget: restarting at file position %ld\n", posn); |
430 | offset = uint64_make(0, posn); |
431 | } else { |
432 | offset = uint64_make(0, 0); |
433 | } |
4c7f0d61 |
434 | |
d92624dc |
435 | printf("remote:%s => local:%s\n", fname, outfname); |
4c7f0d61 |
436 | |
437 | /* |
438 | * FIXME: we can use FXP_FSTAT here to get the file size, and |
439 | * thus put up a progress bar. |
440 | */ |
df49ff19 |
441 | ret = 1; |
4c7f0d61 |
442 | while (1) { |
443 | char buffer[4096]; |
444 | int len; |
445 | int wpos, wlen; |
446 | |
1bc24185 |
447 | sftp_register(req = fxp_read_send(fh, offset, sizeof(buffer))); |
448 | rreq = sftp_find_request(pktin = sftp_recv()); |
449 | assert(rreq == req); |
7b7de4f4 |
450 | len = fxp_read_recv(pktin, rreq, buffer, sizeof(buffer)); |
1bc24185 |
451 | |
32874aea |
452 | if ((len == -1 && fxp_error_type() == SSH_FX_EOF) || len == 0) |
4c7f0d61 |
453 | break; |
454 | if (len == -1) { |
455 | printf("error while reading: %s\n", fxp_error()); |
df49ff19 |
456 | ret = 0; |
4c7f0d61 |
457 | break; |
458 | } |
32874aea |
459 | |
4c7f0d61 |
460 | wpos = 0; |
461 | while (wpos < len) { |
32874aea |
462 | wlen = fwrite(buffer, 1, len - wpos, fp); |
4c7f0d61 |
463 | if (wlen <= 0) { |
464 | printf("error while writing local file\n"); |
df49ff19 |
465 | ret = 0; |
4c7f0d61 |
466 | break; |
467 | } |
468 | wpos += wlen; |
469 | } |
df49ff19 |
470 | if (wpos < len) { /* we had an error */ |
471 | ret = 0; |
4c7f0d61 |
472 | break; |
df49ff19 |
473 | } |
4c7f0d61 |
474 | offset = uint64_add32(offset, len); |
475 | } |
476 | |
477 | fclose(fp); |
1bc24185 |
478 | |
479 | sftp_register(req = fxp_close_send(fh)); |
480 | rreq = sftp_find_request(pktin = sftp_recv()); |
481 | assert(rreq == req); |
7b7de4f4 |
482 | fxp_close_recv(pktin, rreq); |
1bc24185 |
483 | |
4c7f0d61 |
484 | sfree(fname); |
485 | |
df49ff19 |
486 | return ret; |
4c7f0d61 |
487 | } |
d92624dc |
488 | int sftp_cmd_get(struct sftp_command *cmd) |
489 | { |
490 | return sftp_general_get(cmd, 0); |
491 | } |
492 | int sftp_cmd_reget(struct sftp_command *cmd) |
493 | { |
494 | return sftp_general_get(cmd, 1); |
495 | } |
4c7f0d61 |
496 | |
497 | /* |
d92624dc |
498 | * Send a file and store it at the remote end. We have two very |
499 | * similar commands here: `put' and `reput', which differ in that |
500 | * `reput' checks for the existence of the destination file and |
501 | * starts from where a previous aborted transfer left off. |
4c7f0d61 |
502 | */ |
d92624dc |
503 | int sftp_general_put(struct sftp_command *cmd, int restart) |
32874aea |
504 | { |
4c7f0d61 |
505 | struct fxp_handle *fh; |
506 | char *fname, *origoutfname, *outfname; |
1bc24185 |
507 | struct sftp_packet *pktin; |
508 | struct sftp_request *req, *rreq; |
4c7f0d61 |
509 | uint64 offset; |
510 | FILE *fp; |
df49ff19 |
511 | int ret; |
4c7f0d61 |
512 | |
fa3db767 |
513 | if (back == NULL) { |
514 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
515 | return 0; |
516 | } |
517 | |
4c7f0d61 |
518 | if (cmd->nwords < 2) { |
519 | printf("put: expects a filename\n"); |
520 | return 0; |
521 | } |
522 | |
523 | fname = cmd->words[1]; |
dcf8495c |
524 | origoutfname = (cmd->nwords == 2 ? |
525 | stripslashes(cmd->words[1], 1) : cmd->words[2]); |
4c7f0d61 |
526 | outfname = canonify(origoutfname); |
f9e162aa |
527 | if (!outfname) { |
4c7f0d61 |
528 | printf("%s: %s\n", origoutfname, fxp_error()); |
529 | return 0; |
530 | } |
531 | |
532 | fp = fopen(fname, "rb"); |
533 | if (!fp) { |
534 | printf("local: unable to open %s\n", fname); |
4c7f0d61 |
535 | sfree(outfname); |
536 | return 0; |
537 | } |
d92624dc |
538 | if (restart) { |
1bc24185 |
539 | sftp_register(req = fxp_open_send(outfname, SSH_FXF_WRITE)); |
d92624dc |
540 | } else { |
1bc24185 |
541 | sftp_register(req = fxp_open_send(outfname, SSH_FXF_WRITE | |
542 | SSH_FXF_CREAT | SSH_FXF_TRUNC)); |
d92624dc |
543 | } |
1bc24185 |
544 | rreq = sftp_find_request(pktin = sftp_recv()); |
545 | assert(rreq == req); |
7b7de4f4 |
546 | fh = fxp_open_recv(pktin, rreq); |
1bc24185 |
547 | |
4c7f0d61 |
548 | if (!fh) { |
549 | printf("%s: %s\n", outfname, fxp_error()); |
550 | sfree(outfname); |
551 | return 0; |
552 | } |
553 | |
d92624dc |
554 | if (restart) { |
555 | char decbuf[30]; |
556 | struct fxp_attrs attrs; |
1bc24185 |
557 | int ret; |
558 | |
559 | sftp_register(req = fxp_fstat_send(fh)); |
560 | rreq = sftp_find_request(pktin = sftp_recv()); |
561 | assert(rreq == req); |
7b7de4f4 |
562 | ret = fxp_fstat_recv(pktin, rreq, &attrs); |
1bc24185 |
563 | |
564 | if (!ret) { |
d92624dc |
565 | printf("read size of %s: %s\n", outfname, fxp_error()); |
566 | sfree(outfname); |
567 | return 0; |
568 | } |
569 | if (!(attrs.flags & SSH_FILEXFER_ATTR_SIZE)) { |
570 | printf("read size of %s: size was not given\n", outfname); |
571 | sfree(outfname); |
572 | return 0; |
573 | } |
574 | offset = attrs.size; |
575 | uint64_decimal(offset, decbuf); |
576 | printf("reput: restarting at file position %s\n", decbuf); |
577 | if (uint64_compare(offset, uint64_make(0, LONG_MAX)) > 0) { |
578 | printf("reput: remote file is larger than we can deal with\n"); |
579 | sfree(outfname); |
580 | return 0; |
581 | } |
582 | if (fseek(fp, offset.lo, SEEK_SET) != 0) |
583 | fseek(fp, 0, SEEK_END); /* *shrug* */ |
584 | } else { |
585 | offset = uint64_make(0, 0); |
586 | } |
4c7f0d61 |
587 | |
d92624dc |
588 | printf("local:%s => remote:%s\n", fname, outfname); |
4c7f0d61 |
589 | |
590 | /* |
591 | * FIXME: we can use FXP_FSTAT here to get the file size, and |
592 | * thus put up a progress bar. |
593 | */ |
df49ff19 |
594 | ret = 1; |
4c7f0d61 |
595 | while (1) { |
596 | char buffer[4096]; |
1bc24185 |
597 | int len, ret; |
4c7f0d61 |
598 | |
f9e162aa |
599 | len = fread(buffer, 1, sizeof(buffer), fp); |
4c7f0d61 |
600 | if (len == -1) { |
601 | printf("error while reading local file\n"); |
df49ff19 |
602 | ret = 0; |
4c7f0d61 |
603 | break; |
604 | } else if (len == 0) { |
605 | break; |
606 | } |
1bc24185 |
607 | |
608 | sftp_register(req = fxp_write_send(fh, buffer, offset, len)); |
609 | rreq = sftp_find_request(pktin = sftp_recv()); |
610 | assert(rreq == req); |
7b7de4f4 |
611 | ret = fxp_write_recv(pktin, rreq); |
1bc24185 |
612 | |
613 | if (!ret) { |
4c7f0d61 |
614 | printf("error while writing: %s\n", fxp_error()); |
df49ff19 |
615 | ret = 0; |
4c7f0d61 |
616 | break; |
617 | } |
618 | offset = uint64_add32(offset, len); |
619 | } |
620 | |
1bc24185 |
621 | sftp_register(req = fxp_close_send(fh)); |
622 | rreq = sftp_find_request(pktin = sftp_recv()); |
623 | assert(rreq == req); |
7b7de4f4 |
624 | fxp_close_recv(pktin, rreq); |
1bc24185 |
625 | |
4c7f0d61 |
626 | fclose(fp); |
627 | sfree(outfname); |
628 | |
df49ff19 |
629 | return ret; |
4c7f0d61 |
630 | } |
d92624dc |
631 | int sftp_cmd_put(struct sftp_command *cmd) |
632 | { |
633 | return sftp_general_put(cmd, 0); |
634 | } |
635 | int sftp_cmd_reput(struct sftp_command *cmd) |
636 | { |
637 | return sftp_general_put(cmd, 1); |
638 | } |
4c7f0d61 |
639 | |
9954aaa3 |
640 | int sftp_cmd_mkdir(struct sftp_command *cmd) |
641 | { |
642 | char *dir; |
1bc24185 |
643 | struct sftp_packet *pktin; |
644 | struct sftp_request *req, *rreq; |
9954aaa3 |
645 | int result; |
646 | |
fa3db767 |
647 | if (back == NULL) { |
648 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
649 | return 0; |
650 | } |
9954aaa3 |
651 | |
652 | if (cmd->nwords < 2) { |
653 | printf("mkdir: expects a directory\n"); |
654 | return 0; |
655 | } |
656 | |
657 | dir = canonify(cmd->words[1]); |
658 | if (!dir) { |
659 | printf("%s: %s\n", dir, fxp_error()); |
660 | return 0; |
661 | } |
662 | |
1bc24185 |
663 | sftp_register(req = fxp_mkdir_send(dir)); |
664 | rreq = sftp_find_request(pktin = sftp_recv()); |
665 | assert(rreq == req); |
7b7de4f4 |
666 | result = fxp_mkdir_recv(pktin, rreq); |
1bc24185 |
667 | |
9954aaa3 |
668 | if (!result) { |
669 | printf("mkdir %s: %s\n", dir, fxp_error()); |
670 | sfree(dir); |
671 | return 0; |
672 | } |
673 | |
d92624dc |
674 | sfree(dir); |
df49ff19 |
675 | return 1; |
9954aaa3 |
676 | } |
677 | |
678 | int sftp_cmd_rmdir(struct sftp_command *cmd) |
679 | { |
680 | char *dir; |
1bc24185 |
681 | struct sftp_packet *pktin; |
682 | struct sftp_request *req, *rreq; |
9954aaa3 |
683 | int result; |
684 | |
fa3db767 |
685 | if (back == NULL) { |
686 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
687 | return 0; |
688 | } |
9954aaa3 |
689 | |
690 | if (cmd->nwords < 2) { |
691 | printf("rmdir: expects a directory\n"); |
692 | return 0; |
693 | } |
694 | |
695 | dir = canonify(cmd->words[1]); |
696 | if (!dir) { |
697 | printf("%s: %s\n", dir, fxp_error()); |
698 | return 0; |
699 | } |
700 | |
1bc24185 |
701 | sftp_register(req = fxp_rmdir_send(dir)); |
702 | rreq = sftp_find_request(pktin = sftp_recv()); |
703 | assert(rreq == req); |
7b7de4f4 |
704 | result = fxp_rmdir_recv(pktin, rreq); |
1bc24185 |
705 | |
9954aaa3 |
706 | if (!result) { |
707 | printf("rmdir %s: %s\n", dir, fxp_error()); |
708 | sfree(dir); |
709 | return 0; |
710 | } |
711 | |
d92624dc |
712 | sfree(dir); |
df49ff19 |
713 | return 1; |
9954aaa3 |
714 | } |
715 | |
716 | int sftp_cmd_rm(struct sftp_command *cmd) |
717 | { |
718 | char *fname; |
1bc24185 |
719 | struct sftp_packet *pktin; |
720 | struct sftp_request *req, *rreq; |
9954aaa3 |
721 | int result; |
722 | |
fa3db767 |
723 | if (back == NULL) { |
724 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
725 | return 0; |
726 | } |
727 | |
9954aaa3 |
728 | if (cmd->nwords < 2) { |
729 | printf("rm: expects a filename\n"); |
730 | return 0; |
731 | } |
732 | |
733 | fname = canonify(cmd->words[1]); |
734 | if (!fname) { |
735 | printf("%s: %s\n", fname, fxp_error()); |
736 | return 0; |
737 | } |
738 | |
1bc24185 |
739 | sftp_register(req = fxp_remove_send(fname)); |
740 | rreq = sftp_find_request(pktin = sftp_recv()); |
741 | assert(rreq == req); |
7b7de4f4 |
742 | result = fxp_remove_recv(pktin, rreq); |
1bc24185 |
743 | |
9954aaa3 |
744 | if (!result) { |
745 | printf("rm %s: %s\n", fname, fxp_error()); |
746 | sfree(fname); |
747 | return 0; |
748 | } |
749 | |
d92624dc |
750 | sfree(fname); |
df49ff19 |
751 | return 1; |
d92624dc |
752 | } |
753 | |
754 | int sftp_cmd_mv(struct sftp_command *cmd) |
755 | { |
756 | char *srcfname, *dstfname; |
1bc24185 |
757 | struct sftp_packet *pktin; |
758 | struct sftp_request *req, *rreq; |
d92624dc |
759 | int result; |
760 | |
fa3db767 |
761 | if (back == NULL) { |
762 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
763 | return 0; |
764 | } |
765 | |
d92624dc |
766 | if (cmd->nwords < 3) { |
767 | printf("mv: expects two filenames\n"); |
9954aaa3 |
768 | return 0; |
d92624dc |
769 | } |
770 | srcfname = canonify(cmd->words[1]); |
771 | if (!srcfname) { |
772 | printf("%s: %s\n", srcfname, fxp_error()); |
773 | return 0; |
774 | } |
775 | |
776 | dstfname = canonify(cmd->words[2]); |
777 | if (!dstfname) { |
778 | printf("%s: %s\n", dstfname, fxp_error()); |
779 | return 0; |
780 | } |
9954aaa3 |
781 | |
1bc24185 |
782 | sftp_register(req = fxp_rename_send(srcfname, dstfname)); |
783 | rreq = sftp_find_request(pktin = sftp_recv()); |
784 | assert(rreq == req); |
7b7de4f4 |
785 | result = fxp_rename_recv(pktin, rreq); |
1bc24185 |
786 | |
d92624dc |
787 | if (!result) { |
788 | char const *error = fxp_error(); |
789 | struct fxp_attrs attrs; |
790 | |
791 | /* |
792 | * The move might have failed because dstfname pointed at a |
793 | * directory. We check this possibility now: if dstfname |
794 | * _is_ a directory, we re-attempt the move by appending |
795 | * the basename of srcfname to dstfname. |
796 | */ |
1bc24185 |
797 | sftp_register(req = fxp_stat_send(dstfname)); |
798 | rreq = sftp_find_request(pktin = sftp_recv()); |
799 | assert(rreq == req); |
7b7de4f4 |
800 | result = fxp_stat_recv(pktin, rreq, &attrs); |
1bc24185 |
801 | |
d92624dc |
802 | if (result && |
803 | (attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS) && |
804 | (attrs.permissions & 0040000)) { |
805 | char *p; |
806 | char *newname, *newcanon; |
807 | printf("(destination %s is a directory)\n", dstfname); |
808 | p = srcfname + strlen(srcfname); |
809 | while (p > srcfname && p[-1] != '/') p--; |
810 | newname = dupcat(dstfname, "/", p, NULL); |
811 | newcanon = canonify(newname); |
812 | sfree(newname); |
813 | if (newcanon) { |
814 | sfree(dstfname); |
815 | dstfname = newcanon; |
1bc24185 |
816 | |
817 | sftp_register(req = fxp_rename_send(srcfname, dstfname)); |
818 | rreq = sftp_find_request(pktin = sftp_recv()); |
819 | assert(rreq == req); |
7b7de4f4 |
820 | result = fxp_rename_recv(pktin, rreq); |
1bc24185 |
821 | |
d92624dc |
822 | error = result ? NULL : fxp_error(); |
823 | } |
824 | } |
825 | if (error) { |
826 | printf("mv %s %s: %s\n", srcfname, dstfname, error); |
827 | sfree(srcfname); |
828 | sfree(dstfname); |
829 | return 0; |
830 | } |
831 | } |
832 | printf("%s -> %s\n", srcfname, dstfname); |
833 | |
834 | sfree(srcfname); |
835 | sfree(dstfname); |
df49ff19 |
836 | return 1; |
9954aaa3 |
837 | } |
838 | |
d92624dc |
839 | int sftp_cmd_chmod(struct sftp_command *cmd) |
840 | { |
841 | char *fname, *mode; |
842 | int result; |
843 | struct fxp_attrs attrs; |
844 | unsigned attrs_clr, attrs_xor, oldperms, newperms; |
1bc24185 |
845 | struct sftp_packet *pktin; |
846 | struct sftp_request *req, *rreq; |
d92624dc |
847 | |
fa3db767 |
848 | if (back == NULL) { |
849 | printf("psftp: not connected to a host; use \"open host.name\"\n"); |
850 | return 0; |
851 | } |
852 | |
d92624dc |
853 | if (cmd->nwords < 3) { |
854 | printf("chmod: expects a mode specifier and a filename\n"); |
855 | return 0; |
856 | } |
857 | |
858 | /* |
859 | * Attempt to parse the mode specifier in cmd->words[1]. We |
860 | * don't support the full horror of Unix chmod; instead we |
861 | * support a much simpler syntax in which the user can either |
862 | * specify an octal number, or a comma-separated sequence of |
863 | * [ugoa]*[-+=][rwxst]+. (The initial [ugoa] sequence may |
864 | * _only_ be omitted if the only attribute mentioned is t, |
865 | * since all others require a user/group/other specification. |
866 | * Additionally, the s attribute may not be specified for any |
867 | * [ugoa] specifications other than exactly u or exactly g. |
868 | */ |
869 | attrs_clr = attrs_xor = 0; |
870 | mode = cmd->words[1]; |
871 | if (mode[0] >= '0' && mode[0] <= '9') { |
872 | if (mode[strspn(mode, "01234567")]) { |
873 | printf("chmod: numeric file modes should" |
874 | " contain digits 0-7 only\n"); |
875 | return 0; |
876 | } |
877 | attrs_clr = 07777; |
878 | sscanf(mode, "%o", &attrs_xor); |
879 | attrs_xor &= attrs_clr; |
880 | } else { |
881 | while (*mode) { |
882 | char *modebegin = mode; |
883 | unsigned subset, perms; |
884 | int action; |
885 | |
886 | subset = 0; |
887 | while (*mode && *mode != ',' && |
888 | *mode != '+' && *mode != '-' && *mode != '=') { |
889 | switch (*mode) { |
890 | case 'u': subset |= 04700; break; /* setuid, user perms */ |
891 | case 'g': subset |= 02070; break; /* setgid, group perms */ |
892 | case 'o': subset |= 00007; break; /* just other perms */ |
893 | case 'a': subset |= 06777; break; /* all of the above */ |
894 | default: |
895 | printf("chmod: file mode '%.*s' contains unrecognised" |
896 | " user/group/other specifier '%c'\n", |
b51259f6 |
897 | (int)strcspn(modebegin, ","), modebegin, *mode); |
d92624dc |
898 | return 0; |
899 | } |
900 | mode++; |
901 | } |
902 | if (!*mode || *mode == ',') { |
903 | printf("chmod: file mode '%.*s' is incomplete\n", |
b51259f6 |
904 | (int)strcspn(modebegin, ","), modebegin); |
d92624dc |
905 | return 0; |
906 | } |
907 | action = *mode++; |
908 | if (!*mode || *mode == ',') { |
909 | printf("chmod: file mode '%.*s' is incomplete\n", |
b51259f6 |
910 | (int)strcspn(modebegin, ","), modebegin); |
d92624dc |
911 | return 0; |
912 | } |
913 | perms = 0; |
914 | while (*mode && *mode != ',') { |
915 | switch (*mode) { |
916 | case 'r': perms |= 00444; break; |
917 | case 'w': perms |= 00222; break; |
918 | case 'x': perms |= 00111; break; |
919 | case 't': perms |= 01000; subset |= 01000; break; |
920 | case 's': |
921 | if ((subset & 06777) != 04700 && |
922 | (subset & 06777) != 02070) { |
923 | printf("chmod: file mode '%.*s': set[ug]id bit should" |
924 | " be used with exactly one of u or g only\n", |
b51259f6 |
925 | (int)strcspn(modebegin, ","), modebegin); |
d92624dc |
926 | return 0; |
927 | } |
928 | perms |= 06000; |
929 | break; |
930 | default: |
931 | printf("chmod: file mode '%.*s' contains unrecognised" |
932 | " permission specifier '%c'\n", |
b51259f6 |
933 | (int)strcspn(modebegin, ","), modebegin, *mode); |
d92624dc |
934 | return 0; |
935 | } |
936 | mode++; |
937 | } |
938 | if (!(subset & 06777) && (perms &~ subset)) { |
939 | printf("chmod: file mode '%.*s' contains no user/group/other" |
940 | " specifier and permissions other than 't' \n", |
b51259f6 |
941 | (int)strcspn(modebegin, ","), modebegin); |
d92624dc |
942 | return 0; |
943 | } |
944 | perms &= subset; |
945 | switch (action) { |
946 | case '+': |
947 | attrs_clr |= perms; |
948 | attrs_xor |= perms; |
949 | break; |
950 | case '-': |
951 | attrs_clr |= perms; |
952 | attrs_xor &= ~perms; |
953 | break; |
954 | case '=': |
955 | attrs_clr |= subset; |
956 | attrs_xor |= perms; |
957 | break; |
958 | } |
959 | if (*mode) mode++; /* eat comma */ |
960 | } |
961 | } |
962 | |
963 | fname = canonify(cmd->words[2]); |
964 | if (!fname) { |
965 | printf("%s: %s\n", fname, fxp_error()); |
966 | return 0; |
967 | } |
968 | |
1bc24185 |
969 | sftp_register(req = fxp_stat_send(fname)); |
970 | rreq = sftp_find_request(pktin = sftp_recv()); |
971 | assert(rreq == req); |
7b7de4f4 |
972 | result = fxp_stat_recv(pktin, rreq, &attrs); |
1bc24185 |
973 | |
d92624dc |
974 | if (!result || !(attrs.flags & SSH_FILEXFER_ATTR_PERMISSIONS)) { |
975 | printf("get attrs for %s: %s\n", fname, |
976 | result ? "file permissions not provided" : fxp_error()); |
977 | sfree(fname); |
978 | return 0; |
979 | } |
980 | |
981 | attrs.flags = SSH_FILEXFER_ATTR_PERMISSIONS; /* perms _only_ */ |
982 | oldperms = attrs.permissions & 07777; |
983 | attrs.permissions &= ~attrs_clr; |
984 | attrs.permissions ^= attrs_xor; |
985 | newperms = attrs.permissions & 07777; |
986 | |
1bc24185 |
987 | sftp_register(req = fxp_setstat_send(fname, attrs)); |
988 | rreq = sftp_find_request(pktin = sftp_recv()); |
989 | assert(rreq == req); |
7b7de4f4 |
990 | result = fxp_setstat_recv(pktin, rreq); |
d92624dc |
991 | |
992 | if (!result) { |
993 | printf("set attrs for %s: %s\n", fname, fxp_error()); |
994 | sfree(fname); |
995 | return 0; |
996 | } |
997 | |
998 | printf("%s: %04o -> %04o\n", fname, oldperms, newperms); |
999 | |
1000 | sfree(fname); |
df49ff19 |
1001 | return 1; |
d92624dc |
1002 | } |
9954aaa3 |
1003 | |
fa3db767 |
1004 | static int sftp_cmd_open(struct sftp_command *cmd) |
1005 | { |
1006 | if (back != NULL) { |
1007 | printf("psftp: already connected\n"); |
1008 | return 0; |
1009 | } |
1010 | |
1011 | if (cmd->nwords < 2) { |
1012 | printf("open: expects a host name\n"); |
1013 | return 0; |
1014 | } |
1015 | |
1016 | if (psftp_connect(cmd->words[1], NULL, 0)) { |
1017 | back = NULL; /* connection is already closed */ |
1018 | return -1; /* this is fatal */ |
1019 | } |
1020 | do_sftp_init(); |
df49ff19 |
1021 | return 1; |
fa3db767 |
1022 | } |
1023 | |
3af97463 |
1024 | static int sftp_cmd_lcd(struct sftp_command *cmd) |
1025 | { |
d6cc41e6 |
1026 | char *currdir, *errmsg; |
3af97463 |
1027 | |
1028 | if (cmd->nwords < 2) { |
1029 | printf("lcd: expects a local directory name\n"); |
1030 | return 0; |
1031 | } |
1032 | |
d6cc41e6 |
1033 | errmsg = psftp_lcd(cmd->words[1]); |
1034 | if (errmsg) { |
1035 | printf("lcd: unable to change directory: %s\n", errmsg); |
1036 | sfree(errmsg); |
3af97463 |
1037 | return 0; |
1038 | } |
1039 | |
d6cc41e6 |
1040 | currdir = psftp_getcwd(); |
3af97463 |
1041 | printf("New local directory is %s\n", currdir); |
1042 | sfree(currdir); |
1043 | |
1044 | return 1; |
1045 | } |
1046 | |
1047 | static int sftp_cmd_lpwd(struct sftp_command *cmd) |
1048 | { |
1049 | char *currdir; |
3af97463 |
1050 | |
d6cc41e6 |
1051 | currdir = psftp_getcwd(); |
3af97463 |
1052 | printf("Current local directory is %s\n", currdir); |
1053 | sfree(currdir); |
1054 | |
1055 | return 1; |
1056 | } |
1057 | |
1058 | static int sftp_cmd_pling(struct sftp_command *cmd) |
1059 | { |
1060 | int exitcode; |
1061 | |
1062 | exitcode = system(cmd->words[1]); |
1063 | return (exitcode == 0); |
1064 | } |
1065 | |
bf5240cd |
1066 | static int sftp_cmd_help(struct sftp_command *cmd); |
1067 | |
4c7f0d61 |
1068 | static struct sftp_cmd_lookup { |
1069 | char *name; |
bf5240cd |
1070 | /* |
1071 | * For help purposes, there are two kinds of command: |
1072 | * |
1073 | * - primary commands, in which `longhelp' is non-NULL. In |
1074 | * this case `shorthelp' is descriptive text, and `longhelp' |
1075 | * is longer descriptive text intended to be printed after |
1076 | * the command name. |
1077 | * |
1078 | * - alias commands, in which `longhelp' is NULL. In this case |
1079 | * `shorthelp' is the name of a primary command, which |
1080 | * contains the help that should double up for this command. |
1081 | */ |
3af97463 |
1082 | int listed; /* do we list this in primary help? */ |
bf5240cd |
1083 | char *shorthelp; |
1084 | char *longhelp; |
32874aea |
1085 | int (*obey) (struct sftp_command *); |
4c7f0d61 |
1086 | } sftp_lookup[] = { |
1087 | /* |
1088 | * List of sftp commands. This is binary-searched so it MUST be |
1089 | * in ASCII order. |
1090 | */ |
32874aea |
1091 | { |
d6cc41e6 |
1092 | "!", TRUE, "run a local command", |
3af97463 |
1093 | "<command>\n" |
d6cc41e6 |
1094 | /* FIXME: this example is crap for non-Windows. */ |
1095 | " Runs a local command. For example, \"!del myfile\".\n", |
3af97463 |
1096 | sftp_cmd_pling |
1097 | }, |
1098 | { |
1099 | "bye", TRUE, "finish your SFTP session", |
bf5240cd |
1100 | "\n" |
1101 | " Terminates your SFTP session and quits the PSFTP program.\n", |
1102 | sftp_cmd_quit |
1103 | }, |
1104 | { |
3af97463 |
1105 | "cd", TRUE, "change your remote working directory", |
bf5240cd |
1106 | " [ <New working directory> ]\n" |
1107 | " Change the remote working directory for your SFTP session.\n" |
1108 | " If a new working directory is not supplied, you will be\n" |
1109 | " returned to your home directory.\n", |
1110 | sftp_cmd_cd |
1111 | }, |
1112 | { |
3af97463 |
1113 | "chmod", TRUE, "change file permissions and modes", |
bf5240cd |
1114 | " ( <octal-digits> | <modifiers> ) <filename>\n" |
1115 | " Change the file permissions on a file or directory.\n" |
1116 | " <octal-digits> can be any octal Unix permission specifier.\n" |
1117 | " Alternatively, <modifiers> can include:\n" |
1118 | " u+r make file readable by owning user\n" |
1119 | " u+w make file writable by owning user\n" |
1120 | " u+x make file executable by owning user\n" |
1121 | " u-r make file not readable by owning user\n" |
1122 | " [also u-w, u-x]\n" |
1123 | " g+r make file readable by members of owning group\n" |
1124 | " [also g+w, g+x, g-r, g-w, g-x]\n" |
1125 | " o+r make file readable by all other users\n" |
1126 | " [also o+w, o+x, o-r, o-w, o-x]\n" |
1127 | " a+r make file readable by absolutely everybody\n" |
1128 | " [also a+w, a+x, a-r, a-w, a-x]\n" |
1129 | " u+s enable the Unix set-user-ID bit\n" |
1130 | " u-s disable the Unix set-user-ID bit\n" |
1131 | " g+s enable the Unix set-group-ID bit\n" |
1132 | " g-s disable the Unix set-group-ID bit\n" |
1133 | " +t enable the Unix \"sticky bit\"\n" |
1134 | " You can give more than one modifier for the same user (\"g-rwx\"), and\n" |
1135 | " more than one user for the same modifier (\"ug+w\"). You can\n" |
1136 | " use commas to separate different modifiers (\"u+rwx,g+s\").\n", |
1137 | sftp_cmd_chmod |
1138 | }, |
1139 | { |
3af97463 |
1140 | "del", TRUE, "delete a file", |
bf5240cd |
1141 | " <filename>\n" |
1142 | " Delete a file.\n", |
1143 | sftp_cmd_rm |
1144 | }, |
1145 | { |
3af97463 |
1146 | "delete", FALSE, "del", NULL, sftp_cmd_rm |
bf5240cd |
1147 | }, |
1148 | { |
3af97463 |
1149 | "dir", TRUE, "list contents of a remote directory", |
bf5240cd |
1150 | " [ <directory-name> ]\n" |
1151 | " List the contents of a specified directory on the server.\n" |
1152 | " If <directory-name> is not given, the current working directory\n" |
1153 | " will be listed.\n", |
1154 | sftp_cmd_ls |
1155 | }, |
1156 | { |
3af97463 |
1157 | "exit", TRUE, "bye", NULL, sftp_cmd_quit |
bf5240cd |
1158 | }, |
1159 | { |
3af97463 |
1160 | "get", TRUE, "download a file from the server to your local machine", |
bf5240cd |
1161 | " <filename> [ <local-filename> ]\n" |
1162 | " Downloads a file on the server and stores it locally under\n" |
1163 | " the same name, or under a different one if you supply the\n" |
1164 | " argument <local-filename>.\n", |
1165 | sftp_cmd_get |
1166 | }, |
1167 | { |
3af97463 |
1168 | "help", TRUE, "give help", |
bf5240cd |
1169 | " [ <command> [ <command> ... ] ]\n" |
1170 | " Give general help if no commands are specified.\n" |
1171 | " If one or more commands are specified, give specific help on\n" |
1172 | " those particular commands.\n", |
1173 | sftp_cmd_help |
1174 | }, |
1175 | { |
3af97463 |
1176 | "lcd", TRUE, "change local working directory", |
1177 | " <local-directory-name>\n" |
1178 | " Change the local working directory of the PSFTP program (the\n" |
1179 | " default location where the \"get\" command will save files).\n", |
1180 | sftp_cmd_lcd |
1181 | }, |
1182 | { |
1183 | "lpwd", TRUE, "print local working directory", |
1184 | "\n" |
1185 | " Print the local working directory of the PSFTP program (the\n" |
1186 | " default location where the \"get\" command will save files).\n", |
1187 | sftp_cmd_lpwd |
1188 | }, |
1189 | { |
1190 | "ls", TRUE, "dir", NULL, |
bf5240cd |
1191 | sftp_cmd_ls |
1192 | }, |
1193 | { |
3af97463 |
1194 | "mkdir", TRUE, "create a directory on the remote server", |
bf5240cd |
1195 | " <directory-name>\n" |
1196 | " Creates a directory with the given name on the server.\n", |
1197 | sftp_cmd_mkdir |
1198 | }, |
1199 | { |
3af97463 |
1200 | "mv", TRUE, "move or rename a file on the remote server", |
bf5240cd |
1201 | " <source-filename> <destination-filename>\n" |
1202 | " Moves or renames the file <source-filename> on the server,\n" |
1203 | " so that it is accessible under the name <destination-filename>.\n", |
1204 | sftp_cmd_mv |
1205 | }, |
1206 | { |
3af97463 |
1207 | "open", TRUE, "connect to a host", |
fa3db767 |
1208 | " [<user>@]<hostname>\n" |
1209 | " Establishes an SFTP connection to a given host. Only usable\n" |
1210 | " when you did not already specify a host name on the command\n" |
1211 | " line.\n", |
1212 | sftp_cmd_open |
1213 | }, |
1214 | { |
56542985 |
1215 | "put", TRUE, "upload a file from your local machine to the server", |
1216 | " <filename> [ <remote-filename> ]\n" |
1217 | " Uploads a file to the server and stores it there under\n" |
1218 | " the same name, or under a different one if you supply the\n" |
1219 | " argument <remote-filename>.\n", |
1220 | sftp_cmd_put |
1221 | }, |
1222 | { |
3af97463 |
1223 | "pwd", TRUE, "print your remote working directory", |
4f2b387f |
1224 | "\n" |
1225 | " Print the current remote working directory for your SFTP session.\n", |
1226 | sftp_cmd_pwd |
1227 | }, |
1228 | { |
3af97463 |
1229 | "quit", TRUE, "bye", NULL, |
bf5240cd |
1230 | sftp_cmd_quit |
1231 | }, |
1232 | { |
3af97463 |
1233 | "reget", TRUE, "continue downloading a file", |
bf5240cd |
1234 | " <filename> [ <local-filename> ]\n" |
1235 | " Works exactly like the \"get\" command, but the local file\n" |
1236 | " must already exist. The download will begin at the end of the\n" |
1237 | " file. This is for resuming a download that was interrupted.\n", |
1238 | sftp_cmd_reget |
1239 | }, |
1240 | { |
3af97463 |
1241 | "ren", TRUE, "mv", NULL, |
bf5240cd |
1242 | sftp_cmd_mv |
1243 | }, |
1244 | { |
3af97463 |
1245 | "rename", FALSE, "mv", NULL, |
bf5240cd |
1246 | sftp_cmd_mv |
1247 | }, |
1248 | { |
3af97463 |
1249 | "reput", TRUE, "continue uploading a file", |
bf5240cd |
1250 | " <filename> [ <remote-filename> ]\n" |
1251 | " Works exactly like the \"put\" command, but the remote file\n" |
1252 | " must already exist. The upload will begin at the end of the\n" |
1253 | " file. This is for resuming an upload that was interrupted.\n", |
1254 | sftp_cmd_reput |
1255 | }, |
1256 | { |
3af97463 |
1257 | "rm", TRUE, "del", NULL, |
bf5240cd |
1258 | sftp_cmd_rm |
1259 | }, |
1260 | { |
3af97463 |
1261 | "rmdir", TRUE, "remove a directory on the remote server", |
bf5240cd |
1262 | " <directory-name>\n" |
1263 | " Removes the directory with the given name on the server.\n" |
1264 | " The directory will not be removed unless it is empty.\n", |
1265 | sftp_cmd_rmdir |
1266 | } |
1267 | }; |
1268 | |
1269 | const struct sftp_cmd_lookup *lookup_command(char *name) |
1270 | { |
1271 | int i, j, k, cmp; |
1272 | |
1273 | i = -1; |
1274 | j = sizeof(sftp_lookup) / sizeof(*sftp_lookup); |
1275 | while (j - i > 1) { |
1276 | k = (j + i) / 2; |
1277 | cmp = strcmp(name, sftp_lookup[k].name); |
1278 | if (cmp < 0) |
1279 | j = k; |
1280 | else if (cmp > 0) |
1281 | i = k; |
1282 | else { |
1283 | return &sftp_lookup[k]; |
1284 | } |
1285 | } |
1286 | return NULL; |
1287 | } |
1288 | |
1289 | static int sftp_cmd_help(struct sftp_command *cmd) |
1290 | { |
1291 | int i; |
1292 | if (cmd->nwords == 1) { |
1293 | /* |
1294 | * Give short help on each command. |
1295 | */ |
1296 | int maxlen; |
1297 | maxlen = 0; |
1298 | for (i = 0; i < sizeof(sftp_lookup) / sizeof(*sftp_lookup); i++) { |
3af97463 |
1299 | int len; |
1300 | if (!sftp_lookup[i].listed) |
1301 | continue; |
1302 | len = strlen(sftp_lookup[i].name); |
bf5240cd |
1303 | if (maxlen < len) |
1304 | maxlen = len; |
1305 | } |
1306 | for (i = 0; i < sizeof(sftp_lookup) / sizeof(*sftp_lookup); i++) { |
1307 | const struct sftp_cmd_lookup *lookup; |
3af97463 |
1308 | if (!sftp_lookup[i].listed) |
1309 | continue; |
bf5240cd |
1310 | lookup = &sftp_lookup[i]; |
1311 | printf("%-*s", maxlen+2, lookup->name); |
1312 | if (lookup->longhelp == NULL) |
1313 | lookup = lookup_command(lookup->shorthelp); |
1314 | printf("%s\n", lookup->shorthelp); |
1315 | } |
1316 | } else { |
1317 | /* |
1318 | * Give long help on specific commands. |
1319 | */ |
1320 | for (i = 1; i < cmd->nwords; i++) { |
1321 | const struct sftp_cmd_lookup *lookup; |
1322 | lookup = lookup_command(cmd->words[i]); |
1323 | if (!lookup) { |
1324 | printf("help: %s: command not found\n", cmd->words[i]); |
1325 | } else { |
1326 | printf("%s", lookup->name); |
1327 | if (lookup->longhelp == NULL) |
1328 | lookup = lookup_command(lookup->shorthelp); |
1329 | printf("%s", lookup->longhelp); |
1330 | } |
1331 | } |
1332 | } |
df49ff19 |
1333 | return 1; |
bf5240cd |
1334 | } |
4c7f0d61 |
1335 | |
1336 | /* ---------------------------------------------------------------------- |
1337 | * Command line reading and parsing. |
1338 | */ |
9954aaa3 |
1339 | struct sftp_command *sftp_getcmd(FILE *fp, int mode, int modeflags) |
32874aea |
1340 | { |
4c7f0d61 |
1341 | char *line; |
1342 | int linelen, linesize; |
1343 | struct sftp_command *cmd; |
1344 | char *p, *q, *r; |
1345 | int quoting; |
1346 | |
df49ff19 |
1347 | if ((mode == 0) || (modeflags & 1)) { |
1348 | printf("psftp> "); |
1349 | } |
4c7f0d61 |
1350 | fflush(stdout); |
1351 | |
3d88e64d |
1352 | cmd = snew(struct sftp_command); |
4c7f0d61 |
1353 | cmd->words = NULL; |
1354 | cmd->nwords = 0; |
1355 | cmd->wordssize = 0; |
1356 | |
1357 | line = NULL; |
1358 | linesize = linelen = 0; |
1359 | while (1) { |
1360 | int len; |
1361 | char *ret; |
1362 | |
1363 | linesize += 512; |
3d88e64d |
1364 | line = sresize(line, linesize, char); |
9954aaa3 |
1365 | ret = fgets(line + linelen, linesize - linelen, fp); |
4c7f0d61 |
1366 | |
1367 | if (!ret || (linelen == 0 && line[0] == '\0')) { |
1368 | cmd->obey = sftp_cmd_quit; |
d13c2ee9 |
1369 | if ((mode == 0) || (modeflags & 1)) |
1370 | printf("quit\n"); |
4c7f0d61 |
1371 | return cmd; /* eof */ |
1372 | } |
32874aea |
1373 | len = linelen + strlen(line + linelen); |
4c7f0d61 |
1374 | linelen += len; |
32874aea |
1375 | if (line[linelen - 1] == '\n') { |
4c7f0d61 |
1376 | linelen--; |
1377 | line[linelen] = '\0'; |
1378 | break; |
1379 | } |
1380 | } |
df49ff19 |
1381 | if (modeflags & 1) { |
1382 | printf("%s\n", line); |
1383 | } |
4c7f0d61 |
1384 | |
4c7f0d61 |
1385 | p = line; |
3af97463 |
1386 | while (*p && (*p == ' ' || *p == '\t')) |
1387 | p++; |
1388 | |
1389 | if (*p == '!') { |
1390 | /* |
1391 | * Special case: the ! command. This is always parsed as |
1392 | * exactly two words: one containing the !, and the second |
1393 | * containing everything else on the line. |
1394 | */ |
1395 | cmd->nwords = cmd->wordssize = 2; |
3d88e64d |
1396 | cmd->words = sresize(cmd->words, cmd->wordssize, char *); |
3af97463 |
1397 | cmd->words[0] = "!"; |
1398 | cmd->words[1] = p+1; |
1399 | } else { |
1400 | |
1401 | /* |
1402 | * Parse the command line into words. The syntax is: |
1403 | * - double quotes are removed, but cause spaces within to be |
1404 | * treated as non-separating. |
1405 | * - a double-doublequote pair is a literal double quote, inside |
1406 | * _or_ outside quotes. Like this: |
1407 | * |
1408 | * firstword "second word" "this has ""quotes"" in" and""this"" |
1409 | * |
1410 | * becomes |
1411 | * |
1412 | * >firstword< |
1413 | * >second word< |
1414 | * >this has "quotes" in< |
1415 | * >and"this"< |
1416 | */ |
4c7f0d61 |
1417 | while (*p) { |
3af97463 |
1418 | /* skip whitespace */ |
1419 | while (*p && (*p == ' ' || *p == '\t')) |
1420 | p++; |
1421 | /* mark start of word */ |
1422 | q = r = p; /* q sits at start, r writes word */ |
1423 | quoting = 0; |
1424 | while (*p) { |
1425 | if (!quoting && (*p == ' ' || *p == '\t')) |
1426 | break; /* reached end of word */ |
1427 | else if (*p == '"' && p[1] == '"') |
1428 | p += 2, *r++ = '"'; /* a literal quote */ |
1429 | else if (*p == '"') |
1430 | p++, quoting = !quoting; |
1431 | else |
1432 | *r++ = *p++; |
1433 | } |
1434 | if (*p) |
1435 | p++; /* skip over the whitespace */ |
1436 | *r = '\0'; |
1437 | if (cmd->nwords >= cmd->wordssize) { |
1438 | cmd->wordssize = cmd->nwords + 16; |
3d88e64d |
1439 | cmd->words = sresize(cmd->words, cmd->wordssize, char *); |
3af97463 |
1440 | } |
1441 | cmd->words[cmd->nwords++] = q; |
4c7f0d61 |
1442 | } |
4c7f0d61 |
1443 | } |
1444 | |
1445 | /* |
1446 | * Now parse the first word and assign a function. |
1447 | */ |
1448 | |
1449 | if (cmd->nwords == 0) |
1450 | cmd->obey = sftp_cmd_null; |
1451 | else { |
bf5240cd |
1452 | const struct sftp_cmd_lookup *lookup; |
1453 | lookup = lookup_command(cmd->words[0]); |
1454 | if (!lookup) |
1455 | cmd->obey = sftp_cmd_unknown; |
1456 | else |
1457 | cmd->obey = lookup->obey; |
4c7f0d61 |
1458 | } |
1459 | |
1460 | return cmd; |
1461 | } |
1462 | |
774204f5 |
1463 | static int do_sftp_init(void) |
32874aea |
1464 | { |
1bc24185 |
1465 | struct sftp_packet *pktin; |
1466 | struct sftp_request *req, *rreq; |
1467 | |
4c7f0d61 |
1468 | /* |
1469 | * Do protocol initialisation. |
1470 | */ |
1471 | if (!fxp_init()) { |
1472 | fprintf(stderr, |
32874aea |
1473 | "Fatal: unable to initialise SFTP: %s\n", fxp_error()); |
774204f5 |
1474 | return 1; /* failure */ |
4c7f0d61 |
1475 | } |
1476 | |
1477 | /* |
1478 | * Find out where our home directory is. |
1479 | */ |
1bc24185 |
1480 | sftp_register(req = fxp_realpath_send(".")); |
1481 | rreq = sftp_find_request(pktin = sftp_recv()); |
1482 | assert(rreq == req); |
7b7de4f4 |
1483 | homedir = fxp_realpath_recv(pktin, rreq); |
1bc24185 |
1484 | |
4c7f0d61 |
1485 | if (!homedir) { |
1486 | fprintf(stderr, |
1487 | "Warning: failed to resolve home directory: %s\n", |
1488 | fxp_error()); |
1489 | homedir = dupstr("."); |
1490 | } else { |
1491 | printf("Remote working directory is %s\n", homedir); |
1492 | } |
1493 | pwd = dupstr(homedir); |
774204f5 |
1494 | return 0; |
fa3db767 |
1495 | } |
1496 | |
1497 | void do_sftp(int mode, int modeflags, char *batchfile) |
1498 | { |
1499 | FILE *fp; |
df49ff19 |
1500 | int ret; |
4c7f0d61 |
1501 | |
9954aaa3 |
1502 | /* |
1503 | * Batch mode? |
4c7f0d61 |
1504 | */ |
9954aaa3 |
1505 | if (mode == 0) { |
1506 | |
1507 | /* ------------------------------------------------------------------ |
1508 | * Now we're ready to do Real Stuff. |
1509 | */ |
1510 | while (1) { |
df49ff19 |
1511 | struct sftp_command *cmd; |
1512 | cmd = sftp_getcmd(stdin, 0, 0); |
1513 | if (!cmd) |
1514 | break; |
1515 | if (cmd->obey(cmd) < 0) |
1516 | break; |
bf5240cd |
1517 | } |
9954aaa3 |
1518 | } else { |
1519 | fp = fopen(batchfile, "r"); |
1520 | if (!fp) { |
bf5240cd |
1521 | printf("Fatal: unable to open %s\n", batchfile); |
1522 | return; |
9954aaa3 |
1523 | } |
1524 | while (1) { |
bf5240cd |
1525 | struct sftp_command *cmd; |
1526 | cmd = sftp_getcmd(fp, mode, modeflags); |
1527 | if (!cmd) |
1528 | break; |
df49ff19 |
1529 | ret = cmd->obey(cmd); |
1530 | if (ret < 0) |
bf5240cd |
1531 | break; |
df49ff19 |
1532 | if (ret == 0) { |
bf5240cd |
1533 | if (!(modeflags & 2)) |
9954aaa3 |
1534 | break; |
bf5240cd |
1535 | } |
9954aaa3 |
1536 | } |
bf5240cd |
1537 | fclose(fp); |
9954aaa3 |
1538 | |
4c7f0d61 |
1539 | } |
4a8fc3c4 |
1540 | } |
4c7f0d61 |
1541 | |
4a8fc3c4 |
1542 | /* ---------------------------------------------------------------------- |
1543 | * Dirty bits: integration with PuTTY. |
1544 | */ |
1545 | |
1546 | static int verbose = 0; |
1547 | |
7bedb13c |
1548 | /* |
4a8fc3c4 |
1549 | * Print an error message and perform a fatal exit. |
1550 | */ |
1551 | void fatalbox(char *fmt, ...) |
1552 | { |
57356d63 |
1553 | char *str, *str2; |
4a8fc3c4 |
1554 | va_list ap; |
1555 | va_start(ap, fmt); |
57356d63 |
1556 | str = dupvprintf(fmt, ap); |
1557 | str2 = dupcat("Fatal: ", str, "\n", NULL); |
1558 | sfree(str); |
4a8fc3c4 |
1559 | va_end(ap); |
57356d63 |
1560 | fputs(str2, stderr); |
1561 | sfree(str2); |
4a8fc3c4 |
1562 | |
93b581bd |
1563 | cleanup_exit(1); |
4a8fc3c4 |
1564 | } |
1709795f |
1565 | void modalfatalbox(char *fmt, ...) |
1566 | { |
57356d63 |
1567 | char *str, *str2; |
1709795f |
1568 | va_list ap; |
1569 | va_start(ap, fmt); |
57356d63 |
1570 | str = dupvprintf(fmt, ap); |
1571 | str2 = dupcat("Fatal: ", str, "\n", NULL); |
1572 | sfree(str); |
1709795f |
1573 | va_end(ap); |
57356d63 |
1574 | fputs(str2, stderr); |
1575 | sfree(str2); |
1709795f |
1576 | |
1577 | cleanup_exit(1); |
1578 | } |
a8327734 |
1579 | void connection_fatal(void *frontend, char *fmt, ...) |
4a8fc3c4 |
1580 | { |
57356d63 |
1581 | char *str, *str2; |
4a8fc3c4 |
1582 | va_list ap; |
1583 | va_start(ap, fmt); |
57356d63 |
1584 | str = dupvprintf(fmt, ap); |
1585 | str2 = dupcat("Fatal: ", str, "\n", NULL); |
1586 | sfree(str); |
4a8fc3c4 |
1587 | va_end(ap); |
57356d63 |
1588 | fputs(str2, stderr); |
1589 | sfree(str2); |
4a8fc3c4 |
1590 | |
93b581bd |
1591 | cleanup_exit(1); |
4a8fc3c4 |
1592 | } |
1593 | |
6b78788a |
1594 | void ldisc_send(void *handle, char *buf, int len, int interactive) |
32874aea |
1595 | { |
4a8fc3c4 |
1596 | /* |
1597 | * This is only here because of the calls to ldisc_send(NULL, |
1598 | * 0) in ssh.c. Nothing in PSFTP actually needs to use the |
1599 | * ldisc as an ldisc. So if we get called with any real data, I |
1600 | * want to know about it. |
4c7f0d61 |
1601 | */ |
4a8fc3c4 |
1602 | assert(len == 0); |
1603 | } |
1604 | |
1605 | /* |
c44bf5bd |
1606 | * In psftp, all agent requests should be synchronous, so this is a |
1607 | * never-called stub. |
1608 | */ |
1609 | void agent_schedule_callback(void (*callback)(void *, void *, int), |
1610 | void *callback_ctx, void *data, int len) |
1611 | { |
1612 | assert(!"We shouldn't be here"); |
1613 | } |
1614 | |
1615 | /* |
4a8fc3c4 |
1616 | * Receive a block of data from the SSH link. Block until all data |
1617 | * is available. |
1618 | * |
1619 | * To do this, we repeatedly call the SSH protocol module, with our |
1620 | * own trap in from_backend() to catch the data that comes back. We |
1621 | * do this until we have enough data. |
1622 | */ |
1623 | |
32874aea |
1624 | static unsigned char *outptr; /* where to put the data */ |
1625 | static unsigned outlen; /* how much data required */ |
4a8fc3c4 |
1626 | static unsigned char *pending = NULL; /* any spare data */ |
32874aea |
1627 | static unsigned pendlen = 0, pendsize = 0; /* length and phys. size of buffer */ |
9fab77dc |
1628 | int from_backend(void *frontend, int is_stderr, const char *data, int datalen) |
32874aea |
1629 | { |
1630 | unsigned char *p = (unsigned char *) data; |
1631 | unsigned len = (unsigned) datalen; |
4a8fc3c4 |
1632 | |
2b0c045b |
1633 | assert(len > 0); |
1634 | |
4a8fc3c4 |
1635 | /* |
1636 | * stderr data is just spouted to local stderr and otherwise |
1637 | * ignored. |
1638 | */ |
1639 | if (is_stderr) { |
1640 | fwrite(data, 1, len, stderr); |
5471d09a |
1641 | return 0; |
4a8fc3c4 |
1642 | } |
1643 | |
1644 | /* |
1645 | * If this is before the real session begins, just return. |
1646 | */ |
1647 | if (!outptr) |
5471d09a |
1648 | return 0; |
4a8fc3c4 |
1649 | |
1650 | if (outlen > 0) { |
32874aea |
1651 | unsigned used = outlen; |
1652 | if (used > len) |
1653 | used = len; |
1654 | memcpy(outptr, p, used); |
1655 | outptr += used; |
1656 | outlen -= used; |
1657 | p += used; |
1658 | len -= used; |
4a8fc3c4 |
1659 | } |
1660 | |
1661 | if (len > 0) { |
32874aea |
1662 | if (pendsize < pendlen + len) { |
1663 | pendsize = pendlen + len + 4096; |
3d88e64d |
1664 | pending = sresize(pending, pendsize, unsigned char); |
32874aea |
1665 | } |
1666 | memcpy(pending + pendlen, p, len); |
1667 | pendlen += len; |
4a8fc3c4 |
1668 | } |
5471d09a |
1669 | |
1670 | return 0; |
4a8fc3c4 |
1671 | } |
32874aea |
1672 | int sftp_recvdata(char *buf, int len) |
1673 | { |
1674 | outptr = (unsigned char *) buf; |
4a8fc3c4 |
1675 | outlen = len; |
1676 | |
1677 | /* |
1678 | * See if the pending-input block contains some of what we |
1679 | * need. |
1680 | */ |
1681 | if (pendlen > 0) { |
32874aea |
1682 | unsigned pendused = pendlen; |
1683 | if (pendused > outlen) |
1684 | pendused = outlen; |
4a8fc3c4 |
1685 | memcpy(outptr, pending, pendused); |
32874aea |
1686 | memmove(pending, pending + pendused, pendlen - pendused); |
4a8fc3c4 |
1687 | outptr += pendused; |
1688 | outlen -= pendused; |
32874aea |
1689 | pendlen -= pendused; |
1690 | if (pendlen == 0) { |
1691 | pendsize = 0; |
1692 | sfree(pending); |
1693 | pending = NULL; |
1694 | } |
1695 | if (outlen == 0) |
1696 | return 1; |
4a8fc3c4 |
1697 | } |
1698 | |
1699 | while (outlen > 0) { |
d6cc41e6 |
1700 | if (ssh_sftp_loop_iteration() < 0) |
32874aea |
1701 | return 0; /* doom */ |
4a8fc3c4 |
1702 | } |
1703 | |
1704 | return 1; |
1705 | } |
32874aea |
1706 | int sftp_senddata(char *buf, int len) |
1707 | { |
51470298 |
1708 | back->send(backhandle, (unsigned char *) buf, len); |
4a8fc3c4 |
1709 | return 1; |
1710 | } |
1711 | |
1712 | /* |
4a8fc3c4 |
1713 | * Short description of parameters. |
1714 | */ |
1715 | static void usage(void) |
1716 | { |
1717 | printf("PuTTY Secure File Transfer (SFTP) client\n"); |
1718 | printf("%s\n", ver); |
1719 | printf("Usage: psftp [options] user@host\n"); |
1720 | printf("Options:\n"); |
9954aaa3 |
1721 | printf(" -b file use specified batchfile\n"); |
1722 | printf(" -bc output batchfile commands\n"); |
1723 | printf(" -be don't stop batchfile processing if errors\n"); |
4a8fc3c4 |
1724 | printf(" -v show verbose messages\n"); |
e2a197cf |
1725 | printf(" -load sessname Load settings from saved session\n"); |
1726 | printf(" -l user connect with specified username\n"); |
4a8fc3c4 |
1727 | printf(" -P port connect to specified port\n"); |
1728 | printf(" -pw passw login with specified password\n"); |
e2a197cf |
1729 | printf(" -1 -2 force use of particular SSH protocol version\n"); |
1730 | printf(" -C enable compression\n"); |
1731 | printf(" -i key private key file for authentication\n"); |
1732 | printf(" -batch disable all interactive prompts\n"); |
93b581bd |
1733 | cleanup_exit(1); |
4a8fc3c4 |
1734 | } |
1735 | |
1736 | /* |
fa3db767 |
1737 | * Connect to a host. |
4a8fc3c4 |
1738 | */ |
fa3db767 |
1739 | static int psftp_connect(char *userhost, char *user, int portnumber) |
4a8fc3c4 |
1740 | { |
fa3db767 |
1741 | char *host, *realhost; |
cbe2d68f |
1742 | const char *err; |
b51259f6 |
1743 | void *logctx; |
4a8fc3c4 |
1744 | |
1745 | /* Separate host and username */ |
1746 | host = userhost; |
1747 | host = strrchr(host, '@'); |
1748 | if (host == NULL) { |
1749 | host = userhost; |
1750 | } else { |
1751 | *host++ = '\0'; |
1752 | if (user) { |
32874aea |
1753 | printf("psftp: multiple usernames specified; using \"%s\"\n", |
1754 | user); |
4a8fc3c4 |
1755 | } else |
1756 | user = userhost; |
1757 | } |
1758 | |
1759 | /* Try to load settings for this host */ |
1760 | do_defaults(host, &cfg); |
1761 | if (cfg.host[0] == '\0') { |
1762 | /* No settings for this host; use defaults */ |
32874aea |
1763 | do_defaults(NULL, &cfg); |
1764 | strncpy(cfg.host, host, sizeof(cfg.host) - 1); |
1765 | cfg.host[sizeof(cfg.host) - 1] = '\0'; |
f133db8e |
1766 | } |
1767 | |
1768 | /* |
1769 | * Force use of SSH. (If they got the protocol wrong we assume the |
1770 | * port is useless too.) |
1771 | */ |
1772 | if (cfg.protocol != PROT_SSH) { |
1773 | cfg.protocol = PROT_SSH; |
1774 | cfg.port = 22; |
4a8fc3c4 |
1775 | } |
1776 | |
449925a6 |
1777 | /* |
c0a81592 |
1778 | * Enact command-line overrides. |
1779 | */ |
5555d393 |
1780 | cmdline_run_saved(&cfg); |
c0a81592 |
1781 | |
1782 | /* |
449925a6 |
1783 | * Trim leading whitespace off the hostname if it's there. |
1784 | */ |
1785 | { |
1786 | int space = strspn(cfg.host, " \t"); |
1787 | memmove(cfg.host, cfg.host+space, 1+strlen(cfg.host)-space); |
1788 | } |
1789 | |
1790 | /* See if host is of the form user@host */ |
1791 | if (cfg.host[0] != '\0') { |
1792 | char *atsign = strchr(cfg.host, '@'); |
1793 | /* Make sure we're not overflowing the user field */ |
1794 | if (atsign) { |
1795 | if (atsign - cfg.host < sizeof cfg.username) { |
1796 | strncpy(cfg.username, cfg.host, atsign - cfg.host); |
1797 | cfg.username[atsign - cfg.host] = '\0'; |
1798 | } |
1799 | memmove(cfg.host, atsign + 1, 1 + strlen(atsign + 1)); |
1800 | } |
1801 | } |
1802 | |
1803 | /* |
1804 | * Trim a colon suffix off the hostname if it's there. |
1805 | */ |
1806 | cfg.host[strcspn(cfg.host, ":")] = '\0'; |
1807 | |
cae0c023 |
1808 | /* |
1809 | * Remove any remaining whitespace from the hostname. |
1810 | */ |
1811 | { |
1812 | int p1 = 0, p2 = 0; |
1813 | while (cfg.host[p2] != '\0') { |
1814 | if (cfg.host[p2] != ' ' && cfg.host[p2] != '\t') { |
1815 | cfg.host[p1] = cfg.host[p2]; |
1816 | p1++; |
1817 | } |
1818 | p2++; |
1819 | } |
1820 | cfg.host[p1] = '\0'; |
1821 | } |
1822 | |
4a8fc3c4 |
1823 | /* Set username */ |
1824 | if (user != NULL && user[0] != '\0') { |
32874aea |
1825 | strncpy(cfg.username, user, sizeof(cfg.username) - 1); |
1826 | cfg.username[sizeof(cfg.username) - 1] = '\0'; |
4a8fc3c4 |
1827 | } |
1828 | if (!cfg.username[0]) { |
1829 | printf("login as: "); |
f55eceed |
1830 | fflush(stdout); |
4a8fc3c4 |
1831 | if (!fgets(cfg.username, sizeof(cfg.username), stdin)) { |
1832 | fprintf(stderr, "psftp: aborting\n"); |
93b581bd |
1833 | cleanup_exit(1); |
4a8fc3c4 |
1834 | } else { |
1835 | int len = strlen(cfg.username); |
32874aea |
1836 | if (cfg.username[len - 1] == '\n') |
1837 | cfg.username[len - 1] = '\0'; |
4a8fc3c4 |
1838 | } |
1839 | } |
1840 | |
4a8fc3c4 |
1841 | if (portnumber) |
1842 | cfg.port = portnumber; |
1843 | |
1844 | /* SFTP uses SSH2 by default always */ |
1845 | cfg.sshprot = 2; |
1846 | |
d27b4a18 |
1847 | /* |
1848 | * Disable scary things which shouldn't be enabled for simple |
1849 | * things like SCP and SFTP: agent forwarding, port forwarding, |
1850 | * X forwarding. |
1851 | */ |
1852 | cfg.x11_forward = 0; |
1853 | cfg.agentfwd = 0; |
1854 | cfg.portfwd[0] = cfg.portfwd[1] = '\0'; |
1855 | |
bebf22d0 |
1856 | /* Set up subsystem name. */ |
4a8fc3c4 |
1857 | strcpy(cfg.remote_cmd, "sftp"); |
1858 | cfg.ssh_subsys = TRUE; |
1859 | cfg.nopty = TRUE; |
1860 | |
bebf22d0 |
1861 | /* |
1862 | * Set up fallback option, for SSH1 servers or servers with the |
1863 | * sftp subsystem not enabled but the server binary installed |
1864 | * in the usual place. We only support fallback on Unix |
248c0c5a |
1865 | * systems, and we use a kludgy piece of shellery which should |
1866 | * try to find sftp-server in various places (the obvious |
1867 | * systemwide spots /usr/lib and /usr/local/lib, and then the |
1868 | * user's PATH) and finally give up. |
bebf22d0 |
1869 | * |
248c0c5a |
1870 | * test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server |
1871 | * test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server |
1872 | * exec sftp-server |
bebf22d0 |
1873 | * |
1874 | * the idea being that this will attempt to use either of the |
1875 | * obvious pathnames and then give up, and when it does give up |
1876 | * it will print the preferred pathname in the error messages. |
1877 | */ |
1878 | cfg.remote_cmd_ptr2 = |
248c0c5a |
1879 | "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n" |
1880 | "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n" |
1881 | "exec sftp-server"; |
bebf22d0 |
1882 | cfg.ssh_subsys2 = FALSE; |
1883 | |
4a8fc3c4 |
1884 | back = &ssh_backend; |
1885 | |
86916870 |
1886 | err = back->init(NULL, &backhandle, &cfg, cfg.host, cfg.port, &realhost,0); |
4a8fc3c4 |
1887 | if (err != NULL) { |
fa3db767 |
1888 | fprintf(stderr, "ssh_init: %s\n", err); |
4a8fc3c4 |
1889 | return 1; |
1890 | } |
c229ef97 |
1891 | logctx = log_init(NULL, &cfg); |
a8327734 |
1892 | back->provide_logctx(backhandle, logctx); |
d3fef4a5 |
1893 | console_provide_logctx(logctx); |
d6cc41e6 |
1894 | while (!back->sendok(backhandle)) { |
1895 | if (ssh_sftp_loop_iteration() < 0) { |
1896 | fprintf(stderr, "ssh_init: error during SSH connection setup\n"); |
1897 | return 1; |
1898 | } |
1899 | } |
4a8fc3c4 |
1900 | if (verbose && realhost != NULL) |
1901 | printf("Connected to %s\n", realhost); |
fa3db767 |
1902 | return 0; |
1903 | } |
1904 | |
c0a81592 |
1905 | void cmdline_error(char *p, ...) |
1906 | { |
1907 | va_list ap; |
86256dc6 |
1908 | fprintf(stderr, "psftp: "); |
c0a81592 |
1909 | va_start(ap, p); |
1910 | vfprintf(stderr, p, ap); |
1911 | va_end(ap); |
86256dc6 |
1912 | fprintf(stderr, "\n try typing \"psftp -h\" for help\n"); |
c0a81592 |
1913 | exit(1); |
1914 | } |
1915 | |
fa3db767 |
1916 | /* |
1917 | * Main program. Parse arguments etc. |
1918 | */ |
d6cc41e6 |
1919 | int psftp_main(int argc, char *argv[]) |
fa3db767 |
1920 | { |
1921 | int i; |
1922 | int portnumber = 0; |
1923 | char *userhost, *user; |
1924 | int mode = 0; |
1925 | int modeflags = 0; |
1926 | char *batchfile = NULL; |
86256dc6 |
1927 | int errors = 0; |
fa3db767 |
1928 | |
b51259f6 |
1929 | flags = FLAG_STDERR | FLAG_INTERACTIVE |
1930 | #ifdef FLAG_SYNCAGENT |
1931 | | FLAG_SYNCAGENT |
1932 | #endif |
1933 | ; |
c0a81592 |
1934 | cmdline_tooltype = TOOLTYPE_FILETRANSFER; |
ff2ae367 |
1935 | ssh_get_line = &console_get_line; |
fa3db767 |
1936 | sk_init(); |
1937 | |
1938 | userhost = user = NULL; |
1939 | |
86256dc6 |
1940 | errors = 0; |
fa3db767 |
1941 | for (i = 1; i < argc; i++) { |
c0a81592 |
1942 | int ret; |
fa3db767 |
1943 | if (argv[i][0] != '-') { |
c0a81592 |
1944 | if (userhost) |
1945 | usage(); |
1946 | else |
1947 | userhost = dupstr(argv[i]); |
1948 | continue; |
1949 | } |
5555d393 |
1950 | ret = cmdline_process_param(argv[i], i+1<argc?argv[i+1]:NULL, 1, &cfg); |
c0a81592 |
1951 | if (ret == -2) { |
1952 | cmdline_error("option \"%s\" requires an argument", argv[i]); |
1953 | } else if (ret == 2) { |
1954 | i++; /* skip next argument */ |
1955 | } else if (ret == 1) { |
1956 | /* We have our own verbosity in addition to `flags'. */ |
1957 | if (flags & FLAG_VERBOSE) |
1958 | verbose = 1; |
fa3db767 |
1959 | } else if (strcmp(argv[i], "-h") == 0 || |
1960 | strcmp(argv[i], "-?") == 0) { |
1961 | usage(); |
c0a81592 |
1962 | } else if (strcmp(argv[i], "-batch") == 0) { |
1963 | console_batch_mode = 1; |
fa3db767 |
1964 | } else if (strcmp(argv[i], "-b") == 0 && i + 1 < argc) { |
1965 | mode = 1; |
1966 | batchfile = argv[++i]; |
d13c2ee9 |
1967 | } else if (strcmp(argv[i], "-bc") == 0) { |
fa3db767 |
1968 | modeflags = modeflags | 1; |
d13c2ee9 |
1969 | } else if (strcmp(argv[i], "-be") == 0) { |
fa3db767 |
1970 | modeflags = modeflags | 2; |
1971 | } else if (strcmp(argv[i], "--") == 0) { |
1972 | i++; |
1973 | break; |
1974 | } else { |
86256dc6 |
1975 | cmdline_error("unknown option \"%s\"", argv[i]); |
fa3db767 |
1976 | } |
1977 | } |
1978 | argc -= i; |
1979 | argv += i; |
1980 | back = NULL; |
1981 | |
1982 | /* |
1983 | * If a user@host string has already been provided, connect to |
1984 | * it now. |
1985 | */ |
1986 | if (userhost) { |
1987 | if (psftp_connect(userhost, user, portnumber)) |
1988 | return 1; |
774204f5 |
1989 | if (do_sftp_init()) |
1990 | return 1; |
fa3db767 |
1991 | } else { |
1992 | printf("psftp: no hostname specified; use \"open host.name\"" |
1993 | " to connect\n"); |
1994 | } |
4c7f0d61 |
1995 | |
9954aaa3 |
1996 | do_sftp(mode, modeflags, batchfile); |
4a8fc3c4 |
1997 | |
51470298 |
1998 | if (back != NULL && back->socket(backhandle) != NULL) { |
4a8fc3c4 |
1999 | char ch; |
51470298 |
2000 | back->special(backhandle, TS_EOF); |
4a8fc3c4 |
2001 | sftp_recvdata(&ch, 1); |
2002 | } |
4a8fc3c4 |
2003 | random_save_seed(); |
2004 | |
4c7f0d61 |
2005 | return 0; |
2006 | } |