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61e96248 | 1 | /* |
2 | * Copyright (c) 2001 Damien Miller. All rights reserved. | |
3 | * | |
4 | * Redistribution and use in source and binary forms, with or without | |
5 | * modification, are permitted provided that the following conditions | |
6 | * are met: | |
7 | * 1. Redistributions of source code must retain the above copyright | |
8 | * notice, this list of conditions and the following disclaimer. | |
9 | * 2. Redistributions in binary form must reproduce the above copyright | |
10 | * notice, this list of conditions and the following disclaimer in the | |
11 | * documentation and/or other materials provided with the distribution. | |
12 | * | |
13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
23 | */ | |
24 | ||
25 | /* XXX: memleaks */ | |
26 | /* XXX: signed vs unsigned */ | |
27 | /* XXX: redesign to allow concurrent overlapped operations */ | |
28 | /* XXX: we use fatal too much, error may be more appropriate in places */ | |
29 | /* XXX: copy between two remote sites */ | |
30 | ||
31 | #include "includes.h" | |
184eed6a | 32 | RCSID("$OpenBSD: sftp-client.c,v 1.19 2001/12/19 07:18:56 deraadt Exp $"); |
61e96248 | 33 | |
61e96248 | 34 | #include "buffer.h" |
35 | #include "bufaux.h" | |
36 | #include "getput.h" | |
37 | #include "xmalloc.h" | |
38 | #include "log.h" | |
39 | #include "atomicio.h" | |
61e96248 | 40 | |
41 | #include "sftp.h" | |
42 | #include "sftp-common.h" | |
43 | #include "sftp-client.h" | |
44 | ||
45 | /* How much data to read/write at at time during copies */ | |
46 | /* XXX: what should this be? */ | |
47 | #define COPY_SIZE 8192 | |
48 | ||
9c5a8165 | 49 | /* Message ID */ |
50 | static u_int msg_id = 1; | |
51 | ||
396c147e | 52 | static void |
61e96248 | 53 | send_msg(int fd, Buffer *m) |
54 | { | |
55 | int mlen = buffer_len(m); | |
56 | int len; | |
57 | Buffer oqueue; | |
58 | ||
59 | buffer_init(&oqueue); | |
60 | buffer_put_int(&oqueue, mlen); | |
61 | buffer_append(&oqueue, buffer_ptr(m), mlen); | |
62 | buffer_consume(m, mlen); | |
63 | ||
64 | len = atomicio(write, fd, buffer_ptr(&oqueue), buffer_len(&oqueue)); | |
65 | if (len <= 0) | |
66 | fatal("Couldn't send packet: %s", strerror(errno)); | |
67 | ||
68 | buffer_free(&oqueue); | |
69 | } | |
70 | ||
396c147e | 71 | static void |
61e96248 | 72 | get_msg(int fd, Buffer *m) |
73 | { | |
74 | u_int len, msg_len; | |
75 | unsigned char buf[4096]; | |
76 | ||
77 | len = atomicio(read, fd, buf, 4); | |
bb6da70f | 78 | if (len == 0) |
79 | fatal("Connection closed"); | |
80 | else if (len == -1) | |
61e96248 | 81 | fatal("Couldn't read packet: %s", strerror(errno)); |
82 | ||
83 | msg_len = GET_32BIT(buf); | |
84 | if (msg_len > 256 * 1024) | |
85 | fatal("Received message too long %d", msg_len); | |
86 | ||
87 | while (msg_len) { | |
88 | len = atomicio(read, fd, buf, MIN(msg_len, sizeof(buf))); | |
bb6da70f | 89 | if (len == 0) |
90 | fatal("Connection closed"); | |
91 | else if (len == -1) | |
61e96248 | 92 | fatal("Couldn't read packet: %s", strerror(errno)); |
93 | ||
94 | msg_len -= len; | |
95 | buffer_append(m, buf, len); | |
96 | } | |
97 | } | |
98 | ||
396c147e | 99 | static void |
61e96248 | 100 | send_string_request(int fd, u_int id, u_int code, char *s, |
101 | u_int len) | |
102 | { | |
103 | Buffer msg; | |
104 | ||
105 | buffer_init(&msg); | |
106 | buffer_put_char(&msg, code); | |
107 | buffer_put_int(&msg, id); | |
108 | buffer_put_string(&msg, s, len); | |
109 | send_msg(fd, &msg); | |
110 | debug3("Sent message fd %d T:%d I:%d", fd, code, id); | |
111 | buffer_free(&msg); | |
112 | } | |
113 | ||
396c147e | 114 | static void |
61e96248 | 115 | send_string_attrs_request(int fd, u_int id, u_int code, char *s, |
116 | u_int len, Attrib *a) | |
117 | { | |
118 | Buffer msg; | |
119 | ||
120 | buffer_init(&msg); | |
121 | buffer_put_char(&msg, code); | |
122 | buffer_put_int(&msg, id); | |
123 | buffer_put_string(&msg, s, len); | |
124 | encode_attrib(&msg, a); | |
125 | send_msg(fd, &msg); | |
126 | debug3("Sent message fd %d T:%d I:%d", fd, code, id); | |
127 | buffer_free(&msg); | |
128 | } | |
129 | ||
396c147e | 130 | static u_int |
61e96248 | 131 | get_status(int fd, int expected_id) |
132 | { | |
133 | Buffer msg; | |
134 | u_int type, id, status; | |
135 | ||
136 | buffer_init(&msg); | |
137 | get_msg(fd, &msg); | |
138 | type = buffer_get_char(&msg); | |
139 | id = buffer_get_int(&msg); | |
140 | ||
141 | if (id != expected_id) | |
142 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
143 | if (type != SSH2_FXP_STATUS) | |
144 | fatal("Expected SSH2_FXP_STATUS(%d) packet, got %d", | |
145 | SSH2_FXP_STATUS, type); | |
146 | ||
147 | status = buffer_get_int(&msg); | |
148 | buffer_free(&msg); | |
149 | ||
150 | debug3("SSH2_FXP_STATUS %d", status); | |
151 | ||
152 | return(status); | |
153 | } | |
154 | ||
396c147e | 155 | static char * |
61e96248 | 156 | get_handle(int fd, u_int expected_id, u_int *len) |
157 | { | |
158 | Buffer msg; | |
159 | u_int type, id; | |
160 | char *handle; | |
161 | ||
162 | buffer_init(&msg); | |
163 | get_msg(fd, &msg); | |
164 | type = buffer_get_char(&msg); | |
165 | id = buffer_get_int(&msg); | |
166 | ||
167 | if (id != expected_id) | |
168 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
169 | if (type == SSH2_FXP_STATUS) { | |
170 | int status = buffer_get_int(&msg); | |
171 | ||
172 | error("Couldn't get handle: %s", fx2txt(status)); | |
173 | return(NULL); | |
174 | } else if (type != SSH2_FXP_HANDLE) | |
175 | fatal("Expected SSH2_FXP_HANDLE(%d) packet, got %d", | |
176 | SSH2_FXP_HANDLE, type); | |
177 | ||
178 | handle = buffer_get_string(&msg, len); | |
179 | buffer_free(&msg); | |
180 | ||
181 | return(handle); | |
182 | } | |
183 | ||
396c147e | 184 | static Attrib * |
d50d9b63 | 185 | get_decode_stat(int fd, u_int expected_id, int quiet) |
61e96248 | 186 | { |
187 | Buffer msg; | |
188 | u_int type, id; | |
189 | Attrib *a; | |
190 | ||
191 | buffer_init(&msg); | |
192 | get_msg(fd, &msg); | |
193 | ||
194 | type = buffer_get_char(&msg); | |
195 | id = buffer_get_int(&msg); | |
196 | ||
197 | debug3("Received stat reply T:%d I:%d", type, id); | |
198 | if (id != expected_id) | |
199 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
200 | if (type == SSH2_FXP_STATUS) { | |
201 | int status = buffer_get_int(&msg); | |
202 | ||
d50d9b63 | 203 | if (quiet) |
204 | debug("Couldn't stat remote file: %s", fx2txt(status)); | |
205 | else | |
206 | error("Couldn't stat remote file: %s", fx2txt(status)); | |
61e96248 | 207 | return(NULL); |
208 | } else if (type != SSH2_FXP_ATTRS) { | |
209 | fatal("Expected SSH2_FXP_ATTRS(%d) packet, got %d", | |
210 | SSH2_FXP_ATTRS, type); | |
211 | } | |
212 | a = decode_attrib(&msg); | |
213 | buffer_free(&msg); | |
214 | ||
215 | return(a); | |
216 | } | |
217 | ||
218 | int | |
219 | do_init(int fd_in, int fd_out) | |
220 | { | |
221 | int type, version; | |
222 | Buffer msg; | |
223 | ||
224 | buffer_init(&msg); | |
225 | buffer_put_char(&msg, SSH2_FXP_INIT); | |
226 | buffer_put_int(&msg, SSH2_FILEXFER_VERSION); | |
227 | send_msg(fd_out, &msg); | |
228 | ||
229 | buffer_clear(&msg); | |
230 | ||
231 | get_msg(fd_in, &msg); | |
232 | ||
2b87da3b | 233 | /* Expecting a VERSION reply */ |
61e96248 | 234 | if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) { |
235 | error("Invalid packet back from SSH2_FXP_INIT (type %d)", | |
236 | type); | |
237 | buffer_free(&msg); | |
238 | return(-1); | |
239 | } | |
240 | version = buffer_get_int(&msg); | |
241 | ||
242 | debug2("Remote version: %d", version); | |
243 | ||
244 | /* Check for extensions */ | |
245 | while (buffer_len(&msg) > 0) { | |
246 | char *name = buffer_get_string(&msg, NULL); | |
247 | char *value = buffer_get_string(&msg, NULL); | |
248 | ||
249 | debug2("Init extension: \"%s\"", name); | |
250 | xfree(name); | |
251 | xfree(value); | |
252 | } | |
253 | ||
254 | buffer_free(&msg); | |
3a7fe5ba | 255 | |
256 | return(version); | |
61e96248 | 257 | } |
258 | ||
259 | int | |
260 | do_close(int fd_in, int fd_out, char *handle, u_int handle_len) | |
261 | { | |
262 | u_int id, status; | |
263 | Buffer msg; | |
264 | ||
265 | buffer_init(&msg); | |
266 | ||
9c5a8165 | 267 | id = msg_id++; |
61e96248 | 268 | buffer_put_char(&msg, SSH2_FXP_CLOSE); |
269 | buffer_put_int(&msg, id); | |
270 | buffer_put_string(&msg, handle, handle_len); | |
271 | send_msg(fd_out, &msg); | |
272 | debug3("Sent message SSH2_FXP_CLOSE I:%d", id); | |
273 | ||
274 | status = get_status(fd_in, id); | |
275 | if (status != SSH2_FX_OK) | |
276 | error("Couldn't close file: %s", fx2txt(status)); | |
277 | ||
278 | buffer_free(&msg); | |
279 | ||
280 | return(status); | |
281 | } | |
282 | ||
2e4fb373 | 283 | |
396c147e | 284 | static int |
cd332296 | 285 | do_lsreaddir(int fd_in, int fd_out, char *path, int printflag, |
2e4fb373 | 286 | SFTP_DIRENT ***dir) |
61e96248 | 287 | { |
288 | Buffer msg; | |
4cb5d598 | 289 | u_int type, id, handle_len, i, expected_id, ents = 0; |
61e96248 | 290 | char *handle; |
291 | ||
9c5a8165 | 292 | id = msg_id++; |
61e96248 | 293 | |
294 | buffer_init(&msg); | |
295 | buffer_put_char(&msg, SSH2_FXP_OPENDIR); | |
296 | buffer_put_int(&msg, id); | |
297 | buffer_put_cstring(&msg, path); | |
298 | send_msg(fd_out, &msg); | |
299 | ||
300 | buffer_clear(&msg); | |
301 | ||
302 | handle = get_handle(fd_in, id, &handle_len); | |
303 | if (handle == NULL) | |
304 | return(-1); | |
305 | ||
2e4fb373 | 306 | if (dir) { |
307 | ents = 0; | |
308 | *dir = xmalloc(sizeof(**dir)); | |
309 | (*dir)[0] = NULL; | |
310 | } | |
2e4fb373 | 311 | |
184eed6a | 312 | for (;;) { |
61e96248 | 313 | int count; |
314 | ||
9c5a8165 | 315 | id = expected_id = msg_id++; |
61e96248 | 316 | |
317 | debug3("Sending SSH2_FXP_READDIR I:%d", id); | |
318 | ||
319 | buffer_clear(&msg); | |
320 | buffer_put_char(&msg, SSH2_FXP_READDIR); | |
321 | buffer_put_int(&msg, id); | |
322 | buffer_put_string(&msg, handle, handle_len); | |
323 | send_msg(fd_out, &msg); | |
324 | ||
325 | buffer_clear(&msg); | |
326 | ||
327 | get_msg(fd_in, &msg); | |
328 | ||
329 | type = buffer_get_char(&msg); | |
330 | id = buffer_get_int(&msg); | |
331 | ||
332 | debug3("Received reply T:%d I:%d", type, id); | |
333 | ||
334 | if (id != expected_id) | |
335 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
336 | ||
337 | if (type == SSH2_FXP_STATUS) { | |
338 | int status = buffer_get_int(&msg); | |
339 | ||
340 | debug3("Received SSH2_FXP_STATUS %d", status); | |
341 | ||
342 | if (status == SSH2_FX_EOF) { | |
343 | break; | |
344 | } else { | |
345 | error("Couldn't read directory: %s", | |
346 | fx2txt(status)); | |
347 | do_close(fd_in, fd_out, handle, handle_len); | |
b655a207 | 348 | return(status); |
61e96248 | 349 | } |
350 | } else if (type != SSH2_FXP_NAME) | |
351 | fatal("Expected SSH2_FXP_NAME(%d) packet, got %d", | |
352 | SSH2_FXP_NAME, type); | |
353 | ||
354 | count = buffer_get_int(&msg); | |
0426a3b4 | 355 | if (count == 0) |
356 | break; | |
357 | debug3("Received %d SSH2_FXP_NAME responses", count); | |
184eed6a | 358 | for (i = 0; i < count; i++) { |
61e96248 | 359 | char *filename, *longname; |
360 | Attrib *a; | |
361 | ||
362 | filename = buffer_get_string(&msg, NULL); | |
363 | longname = buffer_get_string(&msg, NULL); | |
364 | a = decode_attrib(&msg); | |
365 | ||
2e4fb373 | 366 | if (printflag) |
367 | printf("%s\n", longname); | |
368 | ||
369 | if (dir) { | |
cd332296 | 370 | *dir = xrealloc(*dir, sizeof(**dir) * |
2e4fb373 | 371 | (ents + 2)); |
372 | (*dir)[ents] = xmalloc(sizeof(***dir)); | |
373 | (*dir)[ents]->filename = xstrdup(filename); | |
374 | (*dir)[ents]->longname = xstrdup(longname); | |
375 | memcpy(&(*dir)[ents]->a, a, sizeof(*a)); | |
376 | (*dir)[++ents] = NULL; | |
377 | } | |
61e96248 | 378 | |
379 | xfree(filename); | |
380 | xfree(longname); | |
381 | } | |
382 | } | |
383 | ||
384 | buffer_free(&msg); | |
385 | do_close(fd_in, fd_out, handle, handle_len); | |
386 | xfree(handle); | |
387 | ||
388 | return(0); | |
389 | } | |
390 | ||
2e4fb373 | 391 | int |
392 | do_ls(int fd_in, int fd_out, char *path) | |
393 | { | |
394 | return(do_lsreaddir(fd_in, fd_out, path, 1, NULL)); | |
395 | } | |
396 | ||
397 | int | |
398 | do_readdir(int fd_in, int fd_out, char *path, SFTP_DIRENT ***dir) | |
399 | { | |
400 | return(do_lsreaddir(fd_in, fd_out, path, 0, dir)); | |
401 | } | |
402 | ||
403 | void free_sftp_dirents(SFTP_DIRENT **s) | |
404 | { | |
405 | int i; | |
184eed6a | 406 | |
407 | for (i = 0; s[i]; i++) { | |
2e4fb373 | 408 | xfree(s[i]->filename); |
409 | xfree(s[i]->longname); | |
410 | xfree(s[i]); | |
411 | } | |
412 | xfree(s); | |
413 | } | |
414 | ||
61e96248 | 415 | int |
416 | do_rm(int fd_in, int fd_out, char *path) | |
417 | { | |
418 | u_int status, id; | |
419 | ||
420 | debug2("Sending SSH2_FXP_REMOVE \"%s\"", path); | |
421 | ||
9c5a8165 | 422 | id = msg_id++; |
61e96248 | 423 | send_string_request(fd_out, id, SSH2_FXP_REMOVE, path, strlen(path)); |
424 | status = get_status(fd_in, id); | |
425 | if (status != SSH2_FX_OK) | |
426 | error("Couldn't delete file: %s", fx2txt(status)); | |
427 | return(status); | |
428 | } | |
429 | ||
430 | int | |
431 | do_mkdir(int fd_in, int fd_out, char *path, Attrib *a) | |
432 | { | |
433 | u_int status, id; | |
434 | ||
9c5a8165 | 435 | id = msg_id++; |
61e96248 | 436 | send_string_attrs_request(fd_out, id, SSH2_FXP_MKDIR, path, |
437 | strlen(path), a); | |
438 | ||
439 | status = get_status(fd_in, id); | |
440 | if (status != SSH2_FX_OK) | |
441 | error("Couldn't create directory: %s", fx2txt(status)); | |
442 | ||
443 | return(status); | |
444 | } | |
445 | ||
446 | int | |
447 | do_rmdir(int fd_in, int fd_out, char *path) | |
448 | { | |
449 | u_int status, id; | |
450 | ||
9c5a8165 | 451 | id = msg_id++; |
61e96248 | 452 | send_string_request(fd_out, id, SSH2_FXP_RMDIR, path, strlen(path)); |
453 | ||
454 | status = get_status(fd_in, id); | |
455 | if (status != SSH2_FX_OK) | |
456 | error("Couldn't remove directory: %s", fx2txt(status)); | |
457 | ||
458 | return(status); | |
459 | } | |
460 | ||
461 | Attrib * | |
d50d9b63 | 462 | do_stat(int fd_in, int fd_out, char *path, int quiet) |
61e96248 | 463 | { |
464 | u_int id; | |
465 | ||
9c5a8165 | 466 | id = msg_id++; |
61e96248 | 467 | send_string_request(fd_out, id, SSH2_FXP_STAT, path, strlen(path)); |
d50d9b63 | 468 | return(get_decode_stat(fd_in, id, quiet)); |
61e96248 | 469 | } |
470 | ||
471 | Attrib * | |
d50d9b63 | 472 | do_lstat(int fd_in, int fd_out, char *path, int quiet) |
61e96248 | 473 | { |
474 | u_int id; | |
475 | ||
9c5a8165 | 476 | id = msg_id++; |
61e96248 | 477 | send_string_request(fd_out, id, SSH2_FXP_LSTAT, path, strlen(path)); |
d50d9b63 | 478 | return(get_decode_stat(fd_in, id, quiet)); |
61e96248 | 479 | } |
480 | ||
481 | Attrib * | |
d50d9b63 | 482 | do_fstat(int fd_in, int fd_out, char *handle, u_int handle_len, int quiet) |
61e96248 | 483 | { |
484 | u_int id; | |
485 | ||
9c5a8165 | 486 | id = msg_id++; |
61e96248 | 487 | send_string_request(fd_out, id, SSH2_FXP_FSTAT, handle, handle_len); |
d50d9b63 | 488 | return(get_decode_stat(fd_in, id, quiet)); |
61e96248 | 489 | } |
490 | ||
491 | int | |
492 | do_setstat(int fd_in, int fd_out, char *path, Attrib *a) | |
493 | { | |
494 | u_int status, id; | |
495 | ||
9c5a8165 | 496 | id = msg_id++; |
61e96248 | 497 | send_string_attrs_request(fd_out, id, SSH2_FXP_SETSTAT, path, |
498 | strlen(path), a); | |
499 | ||
500 | status = get_status(fd_in, id); | |
501 | if (status != SSH2_FX_OK) | |
502 | error("Couldn't setstat on \"%s\": %s", path, | |
503 | fx2txt(status)); | |
504 | ||
505 | return(status); | |
506 | } | |
507 | ||
508 | int | |
509 | do_fsetstat(int fd_in, int fd_out, char *handle, u_int handle_len, | |
510 | Attrib *a) | |
511 | { | |
512 | u_int status, id; | |
513 | ||
9c5a8165 | 514 | id = msg_id++; |
61e96248 | 515 | send_string_attrs_request(fd_out, id, SSH2_FXP_FSETSTAT, handle, |
516 | handle_len, a); | |
517 | ||
518 | status = get_status(fd_in, id); | |
519 | if (status != SSH2_FX_OK) | |
520 | error("Couldn't fsetstat: %s", fx2txt(status)); | |
521 | ||
522 | return(status); | |
523 | } | |
524 | ||
525 | char * | |
526 | do_realpath(int fd_in, int fd_out, char *path) | |
527 | { | |
528 | Buffer msg; | |
529 | u_int type, expected_id, count, id; | |
530 | char *filename, *longname; | |
531 | Attrib *a; | |
532 | ||
9c5a8165 | 533 | expected_id = id = msg_id++; |
3a7fe5ba | 534 | send_string_request(fd_out, id, SSH2_FXP_REALPATH, path, strlen(path)); |
61e96248 | 535 | |
536 | buffer_init(&msg); | |
537 | ||
538 | get_msg(fd_in, &msg); | |
539 | type = buffer_get_char(&msg); | |
540 | id = buffer_get_int(&msg); | |
541 | ||
542 | if (id != expected_id) | |
543 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
544 | ||
545 | if (type == SSH2_FXP_STATUS) { | |
546 | u_int status = buffer_get_int(&msg); | |
547 | ||
548 | error("Couldn't canonicalise: %s", fx2txt(status)); | |
549 | return(NULL); | |
550 | } else if (type != SSH2_FXP_NAME) | |
551 | fatal("Expected SSH2_FXP_NAME(%d) packet, got %d", | |
552 | SSH2_FXP_NAME, type); | |
553 | ||
554 | count = buffer_get_int(&msg); | |
555 | if (count != 1) | |
556 | fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count); | |
557 | ||
558 | filename = buffer_get_string(&msg, NULL); | |
559 | longname = buffer_get_string(&msg, NULL); | |
560 | a = decode_attrib(&msg); | |
561 | ||
562 | debug3("SSH_FXP_REALPATH %s -> %s", path, filename); | |
563 | ||
564 | xfree(longname); | |
565 | ||
566 | buffer_free(&msg); | |
567 | ||
568 | return(filename); | |
569 | } | |
570 | ||
571 | int | |
572 | do_rename(int fd_in, int fd_out, char *oldpath, char *newpath) | |
573 | { | |
574 | Buffer msg; | |
575 | u_int status, id; | |
576 | ||
577 | buffer_init(&msg); | |
578 | ||
579 | /* Send rename request */ | |
9c5a8165 | 580 | id = msg_id++; |
61e96248 | 581 | buffer_put_char(&msg, SSH2_FXP_RENAME); |
582 | buffer_put_int(&msg, id); | |
583 | buffer_put_cstring(&msg, oldpath); | |
584 | buffer_put_cstring(&msg, newpath); | |
585 | send_msg(fd_out, &msg); | |
586 | debug3("Sent message SSH2_FXP_RENAME \"%s\" -> \"%s\"", oldpath, | |
587 | newpath); | |
588 | buffer_free(&msg); | |
589 | ||
590 | status = get_status(fd_in, id); | |
591 | if (status != SSH2_FX_OK) | |
592 | error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, newpath, | |
593 | fx2txt(status)); | |
594 | ||
595 | return(status); | |
596 | } | |
597 | ||
3a7fe5ba | 598 | int |
599 | do_symlink(int fd_in, int fd_out, char *oldpath, char *newpath) | |
600 | { | |
601 | Buffer msg; | |
602 | u_int status, id; | |
603 | ||
604 | buffer_init(&msg); | |
605 | ||
606 | /* Send rename request */ | |
607 | id = msg_id++; | |
608 | buffer_put_char(&msg, SSH2_FXP_SYMLINK); | |
609 | buffer_put_int(&msg, id); | |
610 | buffer_put_cstring(&msg, oldpath); | |
611 | buffer_put_cstring(&msg, newpath); | |
612 | send_msg(fd_out, &msg); | |
613 | debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath, | |
614 | newpath); | |
615 | buffer_free(&msg); | |
616 | ||
617 | status = get_status(fd_in, id); | |
618 | if (status != SSH2_FX_OK) | |
619 | error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, newpath, | |
620 | fx2txt(status)); | |
621 | ||
622 | return(status); | |
623 | } | |
624 | ||
625 | char * | |
626 | do_readlink(int fd_in, int fd_out, char *path) | |
627 | { | |
628 | Buffer msg; | |
629 | u_int type, expected_id, count, id; | |
630 | char *filename, *longname; | |
631 | Attrib *a; | |
632 | ||
633 | expected_id = id = msg_id++; | |
634 | send_string_request(fd_out, id, SSH2_FXP_READLINK, path, strlen(path)); | |
635 | ||
636 | buffer_init(&msg); | |
637 | ||
638 | get_msg(fd_in, &msg); | |
639 | type = buffer_get_char(&msg); | |
640 | id = buffer_get_int(&msg); | |
641 | ||
642 | if (id != expected_id) | |
643 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
644 | ||
645 | if (type == SSH2_FXP_STATUS) { | |
646 | u_int status = buffer_get_int(&msg); | |
647 | ||
648 | error("Couldn't readlink: %s", fx2txt(status)); | |
649 | return(NULL); | |
650 | } else if (type != SSH2_FXP_NAME) | |
651 | fatal("Expected SSH2_FXP_NAME(%d) packet, got %d", | |
652 | SSH2_FXP_NAME, type); | |
653 | ||
654 | count = buffer_get_int(&msg); | |
655 | if (count != 1) | |
656 | fatal("Got multiple names (%d) from SSH_FXP_READLINK", count); | |
657 | ||
658 | filename = buffer_get_string(&msg, NULL); | |
659 | longname = buffer_get_string(&msg, NULL); | |
660 | a = decode_attrib(&msg); | |
661 | ||
662 | debug3("SSH_FXP_READLINK %s -> %s", path, filename); | |
663 | ||
664 | xfree(longname); | |
665 | ||
666 | buffer_free(&msg); | |
667 | ||
668 | return(filename); | |
669 | } | |
670 | ||
61e96248 | 671 | int |
672 | do_download(int fd_in, int fd_out, char *remote_path, char *local_path, | |
673 | int pflag) | |
674 | { | |
675 | int local_fd; | |
676 | u_int expected_id, handle_len, mode, type, id; | |
677 | u_int64_t offset; | |
678 | char *handle; | |
679 | Buffer msg; | |
680 | Attrib junk, *a; | |
0426a3b4 | 681 | int status; |
61e96248 | 682 | |
d50d9b63 | 683 | a = do_stat(fd_in, fd_out, remote_path, 0); |
61e96248 | 684 | if (a == NULL) |
685 | return(-1); | |
686 | ||
687 | /* XXX: should we preserve set[ug]id? */ | |
688 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) | |
689 | mode = S_IWRITE | (a->perm & 0777); | |
690 | else | |
691 | mode = 0666; | |
692 | ||
d50d9b63 | 693 | if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) && |
694 | (a->perm & S_IFDIR)) { | |
695 | error("Cannot download a directory: %s", remote_path); | |
696 | return(-1); | |
697 | } | |
698 | ||
61e96248 | 699 | local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC, mode); |
700 | if (local_fd == -1) { | |
701 | error("Couldn't open local file \"%s\" for writing: %s", | |
702 | local_path, strerror(errno)); | |
d50d9b63 | 703 | return(-1); |
61e96248 | 704 | } |
705 | ||
61e96248 | 706 | buffer_init(&msg); |
707 | ||
708 | /* Send open request */ | |
9c5a8165 | 709 | id = msg_id++; |
61e96248 | 710 | buffer_put_char(&msg, SSH2_FXP_OPEN); |
711 | buffer_put_int(&msg, id); | |
712 | buffer_put_cstring(&msg, remote_path); | |
713 | buffer_put_int(&msg, SSH2_FXF_READ); | |
714 | attrib_clear(&junk); /* Send empty attributes */ | |
715 | encode_attrib(&msg, &junk); | |
716 | send_msg(fd_out, &msg); | |
717 | debug3("Sent message SSH2_FXP_OPEN I:%d P:%s", id, remote_path); | |
718 | ||
719 | handle = get_handle(fd_in, id, &handle_len); | |
720 | if (handle == NULL) { | |
721 | buffer_free(&msg); | |
722 | close(local_fd); | |
723 | return(-1); | |
724 | } | |
725 | ||
726 | /* Read from remote and write to local */ | |
727 | offset = 0; | |
184eed6a | 728 | for (;;) { |
61e96248 | 729 | u_int len; |
730 | char *data; | |
731 | ||
9c5a8165 | 732 | id = expected_id = msg_id++; |
61e96248 | 733 | |
734 | buffer_clear(&msg); | |
735 | buffer_put_char(&msg, SSH2_FXP_READ); | |
736 | buffer_put_int(&msg, id); | |
737 | buffer_put_string(&msg, handle, handle_len); | |
738 | buffer_put_int64(&msg, offset); | |
739 | buffer_put_int(&msg, COPY_SIZE); | |
740 | send_msg(fd_out, &msg); | |
741 | debug3("Sent message SSH2_FXP_READ I:%d O:%llu S:%u", | |
490cad94 | 742 | id, (u_int64_t)offset, COPY_SIZE); |
61e96248 | 743 | |
744 | buffer_clear(&msg); | |
745 | ||
746 | get_msg(fd_in, &msg); | |
747 | type = buffer_get_char(&msg); | |
748 | id = buffer_get_int(&msg); | |
749 | debug3("Received reply T:%d I:%d", type, id); | |
750 | if (id != expected_id) | |
751 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
752 | if (type == SSH2_FXP_STATUS) { | |
0426a3b4 | 753 | status = buffer_get_int(&msg); |
61e96248 | 754 | |
755 | if (status == SSH2_FX_EOF) | |
756 | break; | |
757 | else { | |
758 | error("Couldn't read from remote " | |
759 | "file \"%s\" : %s", remote_path, | |
184eed6a | 760 | fx2txt(status)); |
61e96248 | 761 | do_close(fd_in, fd_out, handle, handle_len); |
0426a3b4 | 762 | goto done; |
61e96248 | 763 | } |
764 | } else if (type != SSH2_FXP_DATA) { | |
765 | fatal("Expected SSH2_FXP_DATA(%d) packet, got %d", | |
766 | SSH2_FXP_DATA, type); | |
767 | } | |
768 | ||
769 | data = buffer_get_string(&msg, &len); | |
770 | if (len > COPY_SIZE) | |
771 | fatal("Received more data than asked for %d > %d", | |
772 | len, COPY_SIZE); | |
773 | ||
0426a3b4 | 774 | debug3("In read loop, got %d offset %llu", len, |
490cad94 | 775 | (u_int64_t)offset); |
61e96248 | 776 | if (atomicio(write, local_fd, data, len) != len) { |
777 | error("Couldn't write to \"%s\": %s", local_path, | |
778 | strerror(errno)); | |
779 | do_close(fd_in, fd_out, handle, handle_len); | |
0426a3b4 | 780 | status = -1; |
61e96248 | 781 | xfree(data); |
0426a3b4 | 782 | goto done; |
61e96248 | 783 | } |
784 | ||
785 | offset += len; | |
786 | xfree(data); | |
787 | } | |
0426a3b4 | 788 | status = do_close(fd_in, fd_out, handle, handle_len); |
61e96248 | 789 | |
58c54a79 | 790 | /* Override umask and utimes if asked */ |
663fd560 | 791 | #ifdef HAVE_FCHMOD |
58c54a79 | 792 | if (pflag && fchmod(local_fd, mode) == -1) |
663fd560 | 793 | #else |
794 | if (pflag && chmod(local_path, mode) == -1) | |
795 | #endif /* HAVE_FCHMOD */ | |
58c54a79 | 796 | error("Couldn't set mode on \"%s\": %s", local_path, |
797 | strerror(errno)); | |
798 | if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) { | |
799 | struct timeval tv[2]; | |
800 | tv[0].tv_sec = a->atime; | |
801 | tv[1].tv_sec = a->mtime; | |
802 | tv[0].tv_usec = tv[1].tv_usec = 0; | |
803 | if (utimes(local_path, tv) == -1) | |
804 | error("Can't set times on \"%s\": %s", local_path, | |
805 | strerror(errno)); | |
806 | } | |
807 | ||
0426a3b4 | 808 | done: |
809 | close(local_fd); | |
810 | buffer_free(&msg); | |
811 | xfree(handle); | |
812 | return status; | |
61e96248 | 813 | } |
814 | ||
815 | int | |
816 | do_upload(int fd_in, int fd_out, char *local_path, char *remote_path, | |
817 | int pflag) | |
818 | { | |
819 | int local_fd; | |
820 | u_int handle_len, id; | |
821 | u_int64_t offset; | |
822 | char *handle; | |
823 | Buffer msg; | |
824 | struct stat sb; | |
825 | Attrib a; | |
0426a3b4 | 826 | int status; |
61e96248 | 827 | |
828 | if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) { | |
829 | error("Couldn't open local file \"%s\" for reading: %s", | |
830 | local_path, strerror(errno)); | |
831 | return(-1); | |
832 | } | |
833 | if (fstat(local_fd, &sb) == -1) { | |
834 | error("Couldn't fstat local file \"%s\": %s", | |
835 | local_path, strerror(errno)); | |
836 | close(local_fd); | |
837 | return(-1); | |
838 | } | |
839 | stat_to_attrib(&sb, &a); | |
840 | ||
841 | a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; | |
842 | a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; | |
843 | a.perm &= 0777; | |
844 | if (!pflag) | |
845 | a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; | |
846 | ||
847 | buffer_init(&msg); | |
848 | ||
849 | /* Send open request */ | |
9c5a8165 | 850 | id = msg_id++; |
61e96248 | 851 | buffer_put_char(&msg, SSH2_FXP_OPEN); |
852 | buffer_put_int(&msg, id); | |
853 | buffer_put_cstring(&msg, remote_path); | |
854 | buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC); | |
855 | encode_attrib(&msg, &a); | |
856 | send_msg(fd_out, &msg); | |
857 | debug3("Sent message SSH2_FXP_OPEN I:%d P:%s", id, remote_path); | |
858 | ||
859 | buffer_clear(&msg); | |
860 | ||
861 | handle = get_handle(fd_in, id, &handle_len); | |
862 | if (handle == NULL) { | |
863 | close(local_fd); | |
864 | buffer_free(&msg); | |
865 | return(-1); | |
866 | } | |
867 | ||
61e96248 | 868 | /* Read from local and write to remote */ |
869 | offset = 0; | |
184eed6a | 870 | for (;;) { |
61e96248 | 871 | int len; |
872 | char data[COPY_SIZE]; | |
61e96248 | 873 | |
874 | /* | |
875 | * Can't use atomicio here because it returns 0 on EOF, thus losing | |
876 | * the last block of the file | |
877 | */ | |
878 | do | |
879 | len = read(local_fd, data, COPY_SIZE); | |
880 | while ((len == -1) && (errno == EINTR || errno == EAGAIN)); | |
881 | ||
882 | if (len == -1) | |
883 | fatal("Couldn't read from \"%s\": %s", local_path, | |
884 | strerror(errno)); | |
885 | if (len == 0) | |
886 | break; | |
887 | ||
888 | buffer_clear(&msg); | |
889 | buffer_put_char(&msg, SSH2_FXP_WRITE); | |
890 | buffer_put_int(&msg, ++id); | |
891 | buffer_put_string(&msg, handle, handle_len); | |
892 | buffer_put_int64(&msg, offset); | |
893 | buffer_put_string(&msg, data, len); | |
894 | send_msg(fd_out, &msg); | |
895 | debug3("Sent message SSH2_FXP_WRITE I:%d O:%llu S:%u", | |
490cad94 | 896 | id, (u_int64_t)offset, len); |
61e96248 | 897 | |
898 | status = get_status(fd_in, id); | |
899 | if (status != SSH2_FX_OK) { | |
900 | error("Couldn't write to remote file \"%s\": %s", | |
901 | remote_path, fx2txt(status)); | |
902 | do_close(fd_in, fd_out, handle, handle_len); | |
61e96248 | 903 | close(local_fd); |
0426a3b4 | 904 | goto done; |
61e96248 | 905 | } |
9378f292 | 906 | debug3("In write loop, got %d offset %llu", len, |
490cad94 | 907 | (u_int64_t)offset); |
61e96248 | 908 | |
909 | offset += len; | |
910 | } | |
61e96248 | 911 | |
912 | if (close(local_fd) == -1) { | |
913 | error("Couldn't close local file \"%s\": %s", local_path, | |
914 | strerror(errno)); | |
915 | do_close(fd_in, fd_out, handle, handle_len); | |
0426a3b4 | 916 | status = -1; |
917 | goto done; | |
61e96248 | 918 | } |
919 | ||
58c54a79 | 920 | /* Override umask and utimes if asked */ |
921 | if (pflag) | |
922 | do_fsetstat(fd_in, fd_out, handle, handle_len, &a); | |
923 | ||
0426a3b4 | 924 | status = do_close(fd_in, fd_out, handle, handle_len); |
925 | ||
926 | done: | |
927 | xfree(handle); | |
928 | buffer_free(&msg); | |
929 | return status; | |
61e96248 | 930 | } |
2e4fb373 | 931 |