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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" | |
9378f292 | 32 | RCSID("$OpenBSD: sftp-client.c,v 1.3 2001/02/04 15:32:25 stevesk Exp $"); |
61e96248 | 33 | |
34 | #include "ssh.h" | |
35 | #include "buffer.h" | |
36 | #include "bufaux.h" | |
37 | #include "getput.h" | |
38 | #include "xmalloc.h" | |
39 | #include "log.h" | |
40 | #include "atomicio.h" | |
41 | #include "pathnames.h" | |
42 | ||
43 | #include "sftp.h" | |
44 | #include "sftp-common.h" | |
45 | #include "sftp-client.h" | |
46 | ||
47 | /* How much data to read/write at at time during copies */ | |
48 | /* XXX: what should this be? */ | |
49 | #define COPY_SIZE 8192 | |
50 | ||
51 | void | |
52 | send_msg(int fd, Buffer *m) | |
53 | { | |
54 | int mlen = buffer_len(m); | |
55 | int len; | |
56 | Buffer oqueue; | |
57 | ||
58 | buffer_init(&oqueue); | |
59 | buffer_put_int(&oqueue, mlen); | |
60 | buffer_append(&oqueue, buffer_ptr(m), mlen); | |
61 | buffer_consume(m, mlen); | |
62 | ||
63 | len = atomicio(write, fd, buffer_ptr(&oqueue), buffer_len(&oqueue)); | |
64 | if (len <= 0) | |
65 | fatal("Couldn't send packet: %s", strerror(errno)); | |
66 | ||
67 | buffer_free(&oqueue); | |
68 | } | |
69 | ||
70 | void | |
71 | get_msg(int fd, Buffer *m) | |
72 | { | |
73 | u_int len, msg_len; | |
74 | unsigned char buf[4096]; | |
75 | ||
76 | len = atomicio(read, fd, buf, 4); | |
77 | if (len != 4) | |
78 | fatal("Couldn't read packet: %s", strerror(errno)); | |
79 | ||
80 | msg_len = GET_32BIT(buf); | |
81 | if (msg_len > 256 * 1024) | |
82 | fatal("Received message too long %d", msg_len); | |
83 | ||
84 | while (msg_len) { | |
85 | len = atomicio(read, fd, buf, MIN(msg_len, sizeof(buf))); | |
86 | if (len <= 0) | |
87 | fatal("Couldn't read packet: %s", strerror(errno)); | |
88 | ||
89 | msg_len -= len; | |
90 | buffer_append(m, buf, len); | |
91 | } | |
92 | } | |
93 | ||
94 | void | |
95 | send_string_request(int fd, u_int id, u_int code, char *s, | |
96 | u_int len) | |
97 | { | |
98 | Buffer msg; | |
99 | ||
100 | buffer_init(&msg); | |
101 | buffer_put_char(&msg, code); | |
102 | buffer_put_int(&msg, id); | |
103 | buffer_put_string(&msg, s, len); | |
104 | send_msg(fd, &msg); | |
105 | debug3("Sent message fd %d T:%d I:%d", fd, code, id); | |
106 | buffer_free(&msg); | |
107 | } | |
108 | ||
109 | void | |
110 | send_string_attrs_request(int fd, u_int id, u_int code, char *s, | |
111 | u_int len, Attrib *a) | |
112 | { | |
113 | Buffer msg; | |
114 | ||
115 | buffer_init(&msg); | |
116 | buffer_put_char(&msg, code); | |
117 | buffer_put_int(&msg, id); | |
118 | buffer_put_string(&msg, s, len); | |
119 | encode_attrib(&msg, a); | |
120 | send_msg(fd, &msg); | |
121 | debug3("Sent message fd %d T:%d I:%d", fd, code, id); | |
122 | buffer_free(&msg); | |
123 | } | |
124 | ||
125 | u_int | |
126 | get_status(int fd, int expected_id) | |
127 | { | |
128 | Buffer msg; | |
129 | u_int type, id, status; | |
130 | ||
131 | buffer_init(&msg); | |
132 | get_msg(fd, &msg); | |
133 | type = buffer_get_char(&msg); | |
134 | id = buffer_get_int(&msg); | |
135 | ||
136 | if (id != expected_id) | |
137 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
138 | if (type != SSH2_FXP_STATUS) | |
139 | fatal("Expected SSH2_FXP_STATUS(%d) packet, got %d", | |
140 | SSH2_FXP_STATUS, type); | |
141 | ||
142 | status = buffer_get_int(&msg); | |
143 | buffer_free(&msg); | |
144 | ||
145 | debug3("SSH2_FXP_STATUS %d", status); | |
146 | ||
147 | return(status); | |
148 | } | |
149 | ||
150 | char * | |
151 | get_handle(int fd, u_int expected_id, u_int *len) | |
152 | { | |
153 | Buffer msg; | |
154 | u_int type, id; | |
155 | char *handle; | |
156 | ||
157 | buffer_init(&msg); | |
158 | get_msg(fd, &msg); | |
159 | type = buffer_get_char(&msg); | |
160 | id = buffer_get_int(&msg); | |
161 | ||
162 | if (id != expected_id) | |
163 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
164 | if (type == SSH2_FXP_STATUS) { | |
165 | int status = buffer_get_int(&msg); | |
166 | ||
167 | error("Couldn't get handle: %s", fx2txt(status)); | |
168 | return(NULL); | |
169 | } else if (type != SSH2_FXP_HANDLE) | |
170 | fatal("Expected SSH2_FXP_HANDLE(%d) packet, got %d", | |
171 | SSH2_FXP_HANDLE, type); | |
172 | ||
173 | handle = buffer_get_string(&msg, len); | |
174 | buffer_free(&msg); | |
175 | ||
176 | return(handle); | |
177 | } | |
178 | ||
179 | Attrib * | |
180 | get_decode_stat(int fd, u_int expected_id) | |
181 | { | |
182 | Buffer msg; | |
183 | u_int type, id; | |
184 | Attrib *a; | |
185 | ||
186 | buffer_init(&msg); | |
187 | get_msg(fd, &msg); | |
188 | ||
189 | type = buffer_get_char(&msg); | |
190 | id = buffer_get_int(&msg); | |
191 | ||
192 | debug3("Received stat reply T:%d I:%d", type, id); | |
193 | if (id != expected_id) | |
194 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
195 | if (type == SSH2_FXP_STATUS) { | |
196 | int status = buffer_get_int(&msg); | |
197 | ||
198 | error("Couldn't stat remote file: %s", fx2txt(status)); | |
199 | return(NULL); | |
200 | } else if (type != SSH2_FXP_ATTRS) { | |
201 | fatal("Expected SSH2_FXP_ATTRS(%d) packet, got %d", | |
202 | SSH2_FXP_ATTRS, type); | |
203 | } | |
204 | a = decode_attrib(&msg); | |
205 | buffer_free(&msg); | |
206 | ||
207 | return(a); | |
208 | } | |
209 | ||
210 | int | |
211 | do_init(int fd_in, int fd_out) | |
212 | { | |
213 | int type, version; | |
214 | Buffer msg; | |
215 | ||
216 | buffer_init(&msg); | |
217 | buffer_put_char(&msg, SSH2_FXP_INIT); | |
218 | buffer_put_int(&msg, SSH2_FILEXFER_VERSION); | |
219 | send_msg(fd_out, &msg); | |
220 | ||
221 | buffer_clear(&msg); | |
222 | ||
223 | get_msg(fd_in, &msg); | |
224 | ||
2b87da3b | 225 | /* Expecting a VERSION reply */ |
61e96248 | 226 | if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) { |
227 | error("Invalid packet back from SSH2_FXP_INIT (type %d)", | |
228 | type); | |
229 | buffer_free(&msg); | |
230 | return(-1); | |
231 | } | |
232 | version = buffer_get_int(&msg); | |
233 | ||
234 | debug2("Remote version: %d", version); | |
235 | ||
236 | /* Check for extensions */ | |
237 | while (buffer_len(&msg) > 0) { | |
238 | char *name = buffer_get_string(&msg, NULL); | |
239 | char *value = buffer_get_string(&msg, NULL); | |
240 | ||
241 | debug2("Init extension: \"%s\"", name); | |
242 | xfree(name); | |
243 | xfree(value); | |
244 | } | |
245 | ||
246 | buffer_free(&msg); | |
247 | return(0); | |
248 | } | |
249 | ||
250 | int | |
251 | do_close(int fd_in, int fd_out, char *handle, u_int handle_len) | |
252 | { | |
253 | u_int id, status; | |
254 | Buffer msg; | |
255 | ||
256 | buffer_init(&msg); | |
257 | ||
258 | id = arc4random(); | |
259 | buffer_put_char(&msg, SSH2_FXP_CLOSE); | |
260 | buffer_put_int(&msg, id); | |
261 | buffer_put_string(&msg, handle, handle_len); | |
262 | send_msg(fd_out, &msg); | |
263 | debug3("Sent message SSH2_FXP_CLOSE I:%d", id); | |
264 | ||
265 | status = get_status(fd_in, id); | |
266 | if (status != SSH2_FX_OK) | |
267 | error("Couldn't close file: %s", fx2txt(status)); | |
268 | ||
269 | buffer_free(&msg); | |
270 | ||
271 | return(status); | |
272 | } | |
273 | ||
274 | int | |
275 | do_ls(int fd_in, int fd_out, char *path) | |
276 | { | |
277 | Buffer msg; | |
278 | u_int type, id, handle_len, i, expected_id; | |
279 | char *handle; | |
280 | ||
281 | id = arc4random(); | |
282 | ||
283 | buffer_init(&msg); | |
284 | buffer_put_char(&msg, SSH2_FXP_OPENDIR); | |
285 | buffer_put_int(&msg, id); | |
286 | buffer_put_cstring(&msg, path); | |
287 | send_msg(fd_out, &msg); | |
288 | ||
289 | buffer_clear(&msg); | |
290 | ||
291 | handle = get_handle(fd_in, id, &handle_len); | |
292 | if (handle == NULL) | |
293 | return(-1); | |
294 | ||
295 | for(;;) { | |
296 | int count; | |
297 | ||
298 | expected_id = ++id; | |
299 | ||
300 | debug3("Sending SSH2_FXP_READDIR I:%d", id); | |
301 | ||
302 | buffer_clear(&msg); | |
303 | buffer_put_char(&msg, SSH2_FXP_READDIR); | |
304 | buffer_put_int(&msg, id); | |
305 | buffer_put_string(&msg, handle, handle_len); | |
306 | send_msg(fd_out, &msg); | |
307 | ||
308 | buffer_clear(&msg); | |
309 | ||
310 | get_msg(fd_in, &msg); | |
311 | ||
312 | type = buffer_get_char(&msg); | |
313 | id = buffer_get_int(&msg); | |
314 | ||
315 | debug3("Received reply T:%d I:%d", type, id); | |
316 | ||
317 | if (id != expected_id) | |
318 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
319 | ||
320 | if (type == SSH2_FXP_STATUS) { | |
321 | int status = buffer_get_int(&msg); | |
322 | ||
323 | debug3("Received SSH2_FXP_STATUS %d", status); | |
324 | ||
325 | if (status == SSH2_FX_EOF) { | |
326 | break; | |
327 | } else { | |
328 | error("Couldn't read directory: %s", | |
329 | fx2txt(status)); | |
330 | do_close(fd_in, fd_out, handle, handle_len); | |
331 | return(NULL); | |
332 | } | |
333 | } else if (type != SSH2_FXP_NAME) | |
334 | fatal("Expected SSH2_FXP_NAME(%d) packet, got %d", | |
335 | SSH2_FXP_NAME, type); | |
336 | ||
337 | count = buffer_get_int(&msg); | |
338 | debug3("Received %i SSH2_FXP_NAME responses", count); | |
339 | for(i = 0; i < count; i++) { | |
340 | char *filename, *longname; | |
341 | Attrib *a; | |
342 | ||
343 | filename = buffer_get_string(&msg, NULL); | |
344 | longname = buffer_get_string(&msg, NULL); | |
345 | a = decode_attrib(&msg); | |
346 | ||
347 | printf("%s\n", longname); | |
348 | ||
349 | xfree(filename); | |
350 | xfree(longname); | |
351 | } | |
352 | } | |
353 | ||
354 | buffer_free(&msg); | |
355 | do_close(fd_in, fd_out, handle, handle_len); | |
356 | xfree(handle); | |
357 | ||
358 | return(0); | |
359 | } | |
360 | ||
361 | int | |
362 | do_rm(int fd_in, int fd_out, char *path) | |
363 | { | |
364 | u_int status, id; | |
365 | ||
366 | debug2("Sending SSH2_FXP_REMOVE \"%s\"", path); | |
367 | ||
368 | id = arc4random(); | |
369 | send_string_request(fd_out, id, SSH2_FXP_REMOVE, path, strlen(path)); | |
370 | status = get_status(fd_in, id); | |
371 | if (status != SSH2_FX_OK) | |
372 | error("Couldn't delete file: %s", fx2txt(status)); | |
373 | return(status); | |
374 | } | |
375 | ||
376 | int | |
377 | do_mkdir(int fd_in, int fd_out, char *path, Attrib *a) | |
378 | { | |
379 | u_int status, id; | |
380 | ||
381 | id = arc4random(); | |
382 | send_string_attrs_request(fd_out, id, SSH2_FXP_MKDIR, path, | |
383 | strlen(path), a); | |
384 | ||
385 | status = get_status(fd_in, id); | |
386 | if (status != SSH2_FX_OK) | |
387 | error("Couldn't create directory: %s", fx2txt(status)); | |
388 | ||
389 | return(status); | |
390 | } | |
391 | ||
392 | int | |
393 | do_rmdir(int fd_in, int fd_out, char *path) | |
394 | { | |
395 | u_int status, id; | |
396 | ||
397 | id = arc4random(); | |
398 | send_string_request(fd_out, id, SSH2_FXP_RMDIR, path, strlen(path)); | |
399 | ||
400 | status = get_status(fd_in, id); | |
401 | if (status != SSH2_FX_OK) | |
402 | error("Couldn't remove directory: %s", fx2txt(status)); | |
403 | ||
404 | return(status); | |
405 | } | |
406 | ||
407 | Attrib * | |
408 | do_stat(int fd_in, int fd_out, char *path) | |
409 | { | |
410 | u_int id; | |
411 | ||
412 | id = arc4random(); | |
413 | send_string_request(fd_out, id, SSH2_FXP_STAT, path, strlen(path)); | |
414 | return(get_decode_stat(fd_in, id)); | |
415 | } | |
416 | ||
417 | Attrib * | |
418 | do_lstat(int fd_in, int fd_out, char *path) | |
419 | { | |
420 | u_int id; | |
421 | ||
422 | id = arc4random(); | |
423 | send_string_request(fd_out, id, SSH2_FXP_LSTAT, path, strlen(path)); | |
424 | return(get_decode_stat(fd_in, id)); | |
425 | } | |
426 | ||
427 | Attrib * | |
428 | do_fstat(int fd_in, int fd_out, char *handle, | |
429 | u_int handle_len) | |
430 | { | |
431 | u_int id; | |
432 | ||
433 | id = arc4random(); | |
434 | send_string_request(fd_out, id, SSH2_FXP_FSTAT, handle, handle_len); | |
435 | return(get_decode_stat(fd_in, id)); | |
436 | } | |
437 | ||
438 | int | |
439 | do_setstat(int fd_in, int fd_out, char *path, Attrib *a) | |
440 | { | |
441 | u_int status, id; | |
442 | ||
443 | id = arc4random(); | |
444 | send_string_attrs_request(fd_out, id, SSH2_FXP_SETSTAT, path, | |
445 | strlen(path), a); | |
446 | ||
447 | status = get_status(fd_in, id); | |
448 | if (status != SSH2_FX_OK) | |
449 | error("Couldn't setstat on \"%s\": %s", path, | |
450 | fx2txt(status)); | |
451 | ||
452 | return(status); | |
453 | } | |
454 | ||
455 | int | |
456 | do_fsetstat(int fd_in, int fd_out, char *handle, u_int handle_len, | |
457 | Attrib *a) | |
458 | { | |
459 | u_int status, id; | |
460 | ||
461 | id = arc4random(); | |
462 | send_string_attrs_request(fd_out, id, SSH2_FXP_FSETSTAT, handle, | |
463 | handle_len, a); | |
464 | ||
465 | status = get_status(fd_in, id); | |
466 | if (status != SSH2_FX_OK) | |
467 | error("Couldn't fsetstat: %s", fx2txt(status)); | |
468 | ||
469 | return(status); | |
470 | } | |
471 | ||
472 | char * | |
473 | do_realpath(int fd_in, int fd_out, char *path) | |
474 | { | |
475 | Buffer msg; | |
476 | u_int type, expected_id, count, id; | |
477 | char *filename, *longname; | |
478 | Attrib *a; | |
479 | ||
480 | expected_id = id = arc4random(); | |
481 | send_string_request(fd_out, id, SSH2_FXP_REALPATH, path, | |
482 | strlen(path)); | |
483 | ||
484 | buffer_init(&msg); | |
485 | ||
486 | get_msg(fd_in, &msg); | |
487 | type = buffer_get_char(&msg); | |
488 | id = buffer_get_int(&msg); | |
489 | ||
490 | if (id != expected_id) | |
491 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
492 | ||
493 | if (type == SSH2_FXP_STATUS) { | |
494 | u_int status = buffer_get_int(&msg); | |
495 | ||
496 | error("Couldn't canonicalise: %s", fx2txt(status)); | |
497 | return(NULL); | |
498 | } else if (type != SSH2_FXP_NAME) | |
499 | fatal("Expected SSH2_FXP_NAME(%d) packet, got %d", | |
500 | SSH2_FXP_NAME, type); | |
501 | ||
502 | count = buffer_get_int(&msg); | |
503 | if (count != 1) | |
504 | fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count); | |
505 | ||
506 | filename = buffer_get_string(&msg, NULL); | |
507 | longname = buffer_get_string(&msg, NULL); | |
508 | a = decode_attrib(&msg); | |
509 | ||
510 | debug3("SSH_FXP_REALPATH %s -> %s", path, filename); | |
511 | ||
512 | xfree(longname); | |
513 | ||
514 | buffer_free(&msg); | |
515 | ||
516 | return(filename); | |
517 | } | |
518 | ||
519 | int | |
520 | do_rename(int fd_in, int fd_out, char *oldpath, char *newpath) | |
521 | { | |
522 | Buffer msg; | |
523 | u_int status, id; | |
524 | ||
525 | buffer_init(&msg); | |
526 | ||
527 | /* Send rename request */ | |
528 | id = arc4random(); | |
529 | buffer_put_char(&msg, SSH2_FXP_RENAME); | |
530 | buffer_put_int(&msg, id); | |
531 | buffer_put_cstring(&msg, oldpath); | |
532 | buffer_put_cstring(&msg, newpath); | |
533 | send_msg(fd_out, &msg); | |
534 | debug3("Sent message SSH2_FXP_RENAME \"%s\" -> \"%s\"", oldpath, | |
535 | newpath); | |
536 | buffer_free(&msg); | |
537 | ||
538 | status = get_status(fd_in, id); | |
539 | if (status != SSH2_FX_OK) | |
540 | error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, newpath, | |
541 | fx2txt(status)); | |
542 | ||
543 | return(status); | |
544 | } | |
545 | ||
546 | int | |
547 | do_download(int fd_in, int fd_out, char *remote_path, char *local_path, | |
548 | int pflag) | |
549 | { | |
550 | int local_fd; | |
551 | u_int expected_id, handle_len, mode, type, id; | |
552 | u_int64_t offset; | |
553 | char *handle; | |
554 | Buffer msg; | |
555 | Attrib junk, *a; | |
556 | ||
557 | a = do_stat(fd_in, fd_out, remote_path); | |
558 | if (a == NULL) | |
559 | return(-1); | |
560 | ||
561 | /* XXX: should we preserve set[ug]id? */ | |
562 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) | |
563 | mode = S_IWRITE | (a->perm & 0777); | |
564 | else | |
565 | mode = 0666; | |
566 | ||
567 | local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC, mode); | |
568 | if (local_fd == -1) { | |
569 | error("Couldn't open local file \"%s\" for writing: %s", | |
570 | local_path, strerror(errno)); | |
571 | return(errno); | |
572 | } | |
573 | ||
574 | /* Override umask and utimes if asked */ | |
575 | if (pflag && fchmod(local_fd, mode) == -1) | |
576 | error("Couldn't set mode on \"%s\": %s", local_path, | |
577 | strerror(errno)); | |
578 | if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) { | |
579 | struct timeval tv; | |
580 | ||
581 | tv.tv_sec = a->atime; | |
582 | tv.tv_usec = a->mtime; | |
583 | if (utimes(local_path, &tv) == -1) | |
584 | error("Can't set times on \"%s\": %s", local_path, | |
585 | strerror(errno)); | |
586 | } | |
587 | ||
588 | buffer_init(&msg); | |
589 | ||
590 | /* Send open request */ | |
591 | id = arc4random(); | |
592 | buffer_put_char(&msg, SSH2_FXP_OPEN); | |
593 | buffer_put_int(&msg, id); | |
594 | buffer_put_cstring(&msg, remote_path); | |
595 | buffer_put_int(&msg, SSH2_FXF_READ); | |
596 | attrib_clear(&junk); /* Send empty attributes */ | |
597 | encode_attrib(&msg, &junk); | |
598 | send_msg(fd_out, &msg); | |
599 | debug3("Sent message SSH2_FXP_OPEN I:%d P:%s", id, remote_path); | |
600 | ||
601 | handle = get_handle(fd_in, id, &handle_len); | |
602 | if (handle == NULL) { | |
603 | buffer_free(&msg); | |
604 | close(local_fd); | |
605 | return(-1); | |
606 | } | |
607 | ||
608 | /* Read from remote and write to local */ | |
609 | offset = 0; | |
610 | for(;;) { | |
611 | u_int len; | |
612 | char *data; | |
613 | ||
614 | expected_id = ++id; | |
615 | ||
616 | buffer_clear(&msg); | |
617 | buffer_put_char(&msg, SSH2_FXP_READ); | |
618 | buffer_put_int(&msg, id); | |
619 | buffer_put_string(&msg, handle, handle_len); | |
620 | buffer_put_int64(&msg, offset); | |
621 | buffer_put_int(&msg, COPY_SIZE); | |
622 | send_msg(fd_out, &msg); | |
623 | debug3("Sent message SSH2_FXP_READ I:%d O:%llu S:%u", | |
9378f292 | 624 | id, (unsigned long long)offset, COPY_SIZE); |
61e96248 | 625 | |
626 | buffer_clear(&msg); | |
627 | ||
628 | get_msg(fd_in, &msg); | |
629 | type = buffer_get_char(&msg); | |
630 | id = buffer_get_int(&msg); | |
631 | debug3("Received reply T:%d I:%d", type, id); | |
632 | if (id != expected_id) | |
633 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
634 | if (type == SSH2_FXP_STATUS) { | |
635 | int status = buffer_get_int(&msg); | |
636 | ||
637 | if (status == SSH2_FX_EOF) | |
638 | break; | |
639 | else { | |
640 | error("Couldn't read from remote " | |
641 | "file \"%s\" : %s", remote_path, | |
642 | fx2txt(status)); | |
643 | do_close(fd_in, fd_out, handle, handle_len); | |
644 | xfree(handle); | |
645 | close(local_fd); | |
646 | buffer_free(&msg); | |
647 | return(status); | |
648 | } | |
649 | } else if (type != SSH2_FXP_DATA) { | |
650 | fatal("Expected SSH2_FXP_DATA(%d) packet, got %d", | |
651 | SSH2_FXP_DATA, type); | |
652 | } | |
653 | ||
654 | data = buffer_get_string(&msg, &len); | |
655 | if (len > COPY_SIZE) | |
656 | fatal("Received more data than asked for %d > %d", | |
657 | len, COPY_SIZE); | |
658 | ||
9378f292 | 659 | debug3("In read loop, got %d offset %lld", len, |
660 | (unsigned long long)offset); | |
61e96248 | 661 | if (atomicio(write, local_fd, data, len) != len) { |
662 | error("Couldn't write to \"%s\": %s", local_path, | |
663 | strerror(errno)); | |
664 | do_close(fd_in, fd_out, handle, handle_len); | |
665 | xfree(handle); | |
666 | close(local_fd); | |
667 | xfree(data); | |
668 | buffer_free(&msg); | |
669 | return(-1); | |
670 | } | |
671 | ||
672 | offset += len; | |
673 | xfree(data); | |
674 | } | |
675 | xfree(handle); | |
676 | buffer_free(&msg); | |
677 | close(local_fd); | |
678 | ||
679 | return(do_close(fd_in, fd_out, handle, handle_len)); | |
680 | } | |
681 | ||
682 | int | |
683 | do_upload(int fd_in, int fd_out, char *local_path, char *remote_path, | |
684 | int pflag) | |
685 | { | |
686 | int local_fd; | |
687 | u_int handle_len, id; | |
688 | u_int64_t offset; | |
689 | char *handle; | |
690 | Buffer msg; | |
691 | struct stat sb; | |
692 | Attrib a; | |
693 | ||
694 | if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) { | |
695 | error("Couldn't open local file \"%s\" for reading: %s", | |
696 | local_path, strerror(errno)); | |
697 | return(-1); | |
698 | } | |
699 | if (fstat(local_fd, &sb) == -1) { | |
700 | error("Couldn't fstat local file \"%s\": %s", | |
701 | local_path, strerror(errno)); | |
702 | close(local_fd); | |
703 | return(-1); | |
704 | } | |
705 | stat_to_attrib(&sb, &a); | |
706 | ||
707 | a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; | |
708 | a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; | |
709 | a.perm &= 0777; | |
710 | if (!pflag) | |
711 | a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; | |
712 | ||
713 | buffer_init(&msg); | |
714 | ||
715 | /* Send open request */ | |
716 | id = arc4random(); | |
717 | buffer_put_char(&msg, SSH2_FXP_OPEN); | |
718 | buffer_put_int(&msg, id); | |
719 | buffer_put_cstring(&msg, remote_path); | |
720 | buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC); | |
721 | encode_attrib(&msg, &a); | |
722 | send_msg(fd_out, &msg); | |
723 | debug3("Sent message SSH2_FXP_OPEN I:%d P:%s", id, remote_path); | |
724 | ||
725 | buffer_clear(&msg); | |
726 | ||
727 | handle = get_handle(fd_in, id, &handle_len); | |
728 | if (handle == NULL) { | |
729 | close(local_fd); | |
730 | buffer_free(&msg); | |
731 | return(-1); | |
732 | } | |
733 | ||
734 | /* Override umask and utimes if asked */ | |
735 | if (pflag) | |
736 | do_fsetstat(fd_in, fd_out, handle, handle_len, &a); | |
737 | ||
738 | /* Read from local and write to remote */ | |
739 | offset = 0; | |
740 | for(;;) { | |
741 | int len; | |
742 | char data[COPY_SIZE]; | |
743 | u_int status; | |
744 | ||
745 | /* | |
746 | * Can't use atomicio here because it returns 0 on EOF, thus losing | |
747 | * the last block of the file | |
748 | */ | |
749 | do | |
750 | len = read(local_fd, data, COPY_SIZE); | |
751 | while ((len == -1) && (errno == EINTR || errno == EAGAIN)); | |
752 | ||
753 | if (len == -1) | |
754 | fatal("Couldn't read from \"%s\": %s", local_path, | |
755 | strerror(errno)); | |
756 | if (len == 0) | |
757 | break; | |
758 | ||
759 | buffer_clear(&msg); | |
760 | buffer_put_char(&msg, SSH2_FXP_WRITE); | |
761 | buffer_put_int(&msg, ++id); | |
762 | buffer_put_string(&msg, handle, handle_len); | |
763 | buffer_put_int64(&msg, offset); | |
764 | buffer_put_string(&msg, data, len); | |
765 | send_msg(fd_out, &msg); | |
766 | debug3("Sent message SSH2_FXP_WRITE I:%d O:%llu S:%u", | |
9378f292 | 767 | id, (unsigned long long)offset, len); |
61e96248 | 768 | |
769 | status = get_status(fd_in, id); | |
770 | if (status != SSH2_FX_OK) { | |
771 | error("Couldn't write to remote file \"%s\": %s", | |
772 | remote_path, fx2txt(status)); | |
773 | do_close(fd_in, fd_out, handle, handle_len); | |
774 | xfree(handle); | |
775 | close(local_fd); | |
776 | return(-1); | |
777 | } | |
9378f292 | 778 | debug3("In write loop, got %d offset %llu", len, |
779 | (unsigned long long)offset); | |
61e96248 | 780 | |
781 | offset += len; | |
782 | } | |
783 | xfree(handle); | |
784 | buffer_free(&msg); | |
785 | ||
786 | if (close(local_fd) == -1) { | |
787 | error("Couldn't close local file \"%s\": %s", local_path, | |
788 | strerror(errno)); | |
789 | do_close(fd_in, fd_out, handle, handle_len); | |
790 | return(-1); | |
791 | } | |
792 | ||
793 | return(do_close(fd_in, fd_out, handle, handle_len)); | |
794 | } |