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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" | |
d50d9b63 | 32 | RCSID("$OpenBSD: sftp-client.c,v 1.14 2001/03/16 08:16:17 djm 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 | ||
9c5a8165 | 51 | /* Message ID */ |
52 | static u_int msg_id = 1; | |
53 | ||
61e96248 | 54 | void |
55 | send_msg(int fd, Buffer *m) | |
56 | { | |
57 | int mlen = buffer_len(m); | |
58 | int len; | |
59 | Buffer oqueue; | |
60 | ||
61 | buffer_init(&oqueue); | |
62 | buffer_put_int(&oqueue, mlen); | |
63 | buffer_append(&oqueue, buffer_ptr(m), mlen); | |
64 | buffer_consume(m, mlen); | |
65 | ||
66 | len = atomicio(write, fd, buffer_ptr(&oqueue), buffer_len(&oqueue)); | |
67 | if (len <= 0) | |
68 | fatal("Couldn't send packet: %s", strerror(errno)); | |
69 | ||
70 | buffer_free(&oqueue); | |
71 | } | |
72 | ||
73 | void | |
74 | get_msg(int fd, Buffer *m) | |
75 | { | |
76 | u_int len, msg_len; | |
77 | unsigned char buf[4096]; | |
78 | ||
79 | len = atomicio(read, fd, buf, 4); | |
80 | if (len != 4) | |
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))); | |
89 | if (len <= 0) | |
90 | fatal("Couldn't read packet: %s", strerror(errno)); | |
91 | ||
92 | msg_len -= len; | |
93 | buffer_append(m, buf, len); | |
94 | } | |
95 | } | |
96 | ||
97 | void | |
98 | send_string_request(int fd, u_int id, u_int code, char *s, | |
99 | u_int len) | |
100 | { | |
101 | Buffer msg; | |
102 | ||
103 | buffer_init(&msg); | |
104 | buffer_put_char(&msg, code); | |
105 | buffer_put_int(&msg, id); | |
106 | buffer_put_string(&msg, s, len); | |
107 | send_msg(fd, &msg); | |
108 | debug3("Sent message fd %d T:%d I:%d", fd, code, id); | |
109 | buffer_free(&msg); | |
110 | } | |
111 | ||
112 | void | |
113 | send_string_attrs_request(int fd, u_int id, u_int code, char *s, | |
114 | u_int len, Attrib *a) | |
115 | { | |
116 | Buffer msg; | |
117 | ||
118 | buffer_init(&msg); | |
119 | buffer_put_char(&msg, code); | |
120 | buffer_put_int(&msg, id); | |
121 | buffer_put_string(&msg, s, len); | |
122 | encode_attrib(&msg, a); | |
123 | send_msg(fd, &msg); | |
124 | debug3("Sent message fd %d T:%d I:%d", fd, code, id); | |
125 | buffer_free(&msg); | |
126 | } | |
127 | ||
128 | u_int | |
129 | get_status(int fd, int expected_id) | |
130 | { | |
131 | Buffer msg; | |
132 | u_int type, id, status; | |
133 | ||
134 | buffer_init(&msg); | |
135 | get_msg(fd, &msg); | |
136 | type = buffer_get_char(&msg); | |
137 | id = buffer_get_int(&msg); | |
138 | ||
139 | if (id != expected_id) | |
140 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
141 | if (type != SSH2_FXP_STATUS) | |
142 | fatal("Expected SSH2_FXP_STATUS(%d) packet, got %d", | |
143 | SSH2_FXP_STATUS, type); | |
144 | ||
145 | status = buffer_get_int(&msg); | |
146 | buffer_free(&msg); | |
147 | ||
148 | debug3("SSH2_FXP_STATUS %d", status); | |
149 | ||
150 | return(status); | |
151 | } | |
152 | ||
153 | char * | |
154 | get_handle(int fd, u_int expected_id, u_int *len) | |
155 | { | |
156 | Buffer msg; | |
157 | u_int type, id; | |
158 | char *handle; | |
159 | ||
160 | buffer_init(&msg); | |
161 | get_msg(fd, &msg); | |
162 | type = buffer_get_char(&msg); | |
163 | id = buffer_get_int(&msg); | |
164 | ||
165 | if (id != expected_id) | |
166 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
167 | if (type == SSH2_FXP_STATUS) { | |
168 | int status = buffer_get_int(&msg); | |
169 | ||
170 | error("Couldn't get handle: %s", fx2txt(status)); | |
171 | return(NULL); | |
172 | } else if (type != SSH2_FXP_HANDLE) | |
173 | fatal("Expected SSH2_FXP_HANDLE(%d) packet, got %d", | |
174 | SSH2_FXP_HANDLE, type); | |
175 | ||
176 | handle = buffer_get_string(&msg, len); | |
177 | buffer_free(&msg); | |
178 | ||
179 | return(handle); | |
180 | } | |
181 | ||
182 | Attrib * | |
d50d9b63 | 183 | get_decode_stat(int fd, u_int expected_id, int quiet) |
61e96248 | 184 | { |
185 | Buffer msg; | |
186 | u_int type, id; | |
187 | Attrib *a; | |
188 | ||
189 | buffer_init(&msg); | |
190 | get_msg(fd, &msg); | |
191 | ||
192 | type = buffer_get_char(&msg); | |
193 | id = buffer_get_int(&msg); | |
194 | ||
195 | debug3("Received stat reply T:%d I:%d", type, id); | |
196 | if (id != expected_id) | |
197 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
198 | if (type == SSH2_FXP_STATUS) { | |
199 | int status = buffer_get_int(&msg); | |
200 | ||
d50d9b63 | 201 | if (quiet) |
202 | debug("Couldn't stat remote file: %s", fx2txt(status)); | |
203 | else | |
204 | error("Couldn't stat remote file: %s", fx2txt(status)); | |
61e96248 | 205 | return(NULL); |
206 | } else if (type != SSH2_FXP_ATTRS) { | |
207 | fatal("Expected SSH2_FXP_ATTRS(%d) packet, got %d", | |
208 | SSH2_FXP_ATTRS, type); | |
209 | } | |
210 | a = decode_attrib(&msg); | |
211 | buffer_free(&msg); | |
212 | ||
213 | return(a); | |
214 | } | |
215 | ||
216 | int | |
217 | do_init(int fd_in, int fd_out) | |
218 | { | |
219 | int type, version; | |
220 | Buffer msg; | |
221 | ||
222 | buffer_init(&msg); | |
223 | buffer_put_char(&msg, SSH2_FXP_INIT); | |
224 | buffer_put_int(&msg, SSH2_FILEXFER_VERSION); | |
225 | send_msg(fd_out, &msg); | |
226 | ||
227 | buffer_clear(&msg); | |
228 | ||
229 | get_msg(fd_in, &msg); | |
230 | ||
2b87da3b | 231 | /* Expecting a VERSION reply */ |
61e96248 | 232 | if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) { |
233 | error("Invalid packet back from SSH2_FXP_INIT (type %d)", | |
234 | type); | |
235 | buffer_free(&msg); | |
236 | return(-1); | |
237 | } | |
238 | version = buffer_get_int(&msg); | |
239 | ||
240 | debug2("Remote version: %d", version); | |
241 | ||
242 | /* Check for extensions */ | |
243 | while (buffer_len(&msg) > 0) { | |
244 | char *name = buffer_get_string(&msg, NULL); | |
245 | char *value = buffer_get_string(&msg, NULL); | |
246 | ||
247 | debug2("Init extension: \"%s\"", name); | |
248 | xfree(name); | |
249 | xfree(value); | |
250 | } | |
251 | ||
252 | buffer_free(&msg); | |
3a7fe5ba | 253 | |
254 | return(version); | |
61e96248 | 255 | } |
256 | ||
257 | int | |
258 | do_close(int fd_in, int fd_out, char *handle, u_int handle_len) | |
259 | { | |
260 | u_int id, status; | |
261 | Buffer msg; | |
262 | ||
263 | buffer_init(&msg); | |
264 | ||
9c5a8165 | 265 | id = msg_id++; |
61e96248 | 266 | buffer_put_char(&msg, SSH2_FXP_CLOSE); |
267 | buffer_put_int(&msg, id); | |
268 | buffer_put_string(&msg, handle, handle_len); | |
269 | send_msg(fd_out, &msg); | |
270 | debug3("Sent message SSH2_FXP_CLOSE I:%d", id); | |
271 | ||
272 | status = get_status(fd_in, id); | |
273 | if (status != SSH2_FX_OK) | |
274 | error("Couldn't close file: %s", fx2txt(status)); | |
275 | ||
276 | buffer_free(&msg); | |
277 | ||
278 | return(status); | |
279 | } | |
280 | ||
2e4fb373 | 281 | |
61e96248 | 282 | int |
2e4fb373 | 283 | do_lsreaddir(int fd_in, int fd_out, char *path, int printflag, |
284 | SFTP_DIRENT ***dir) | |
61e96248 | 285 | { |
286 | Buffer msg; | |
4cb5d598 | 287 | u_int type, id, handle_len, i, expected_id, ents = 0; |
61e96248 | 288 | char *handle; |
289 | ||
9c5a8165 | 290 | id = msg_id++; |
61e96248 | 291 | |
292 | buffer_init(&msg); | |
293 | buffer_put_char(&msg, SSH2_FXP_OPENDIR); | |
294 | buffer_put_int(&msg, id); | |
295 | buffer_put_cstring(&msg, path); | |
296 | send_msg(fd_out, &msg); | |
297 | ||
298 | buffer_clear(&msg); | |
299 | ||
300 | handle = get_handle(fd_in, id, &handle_len); | |
301 | if (handle == NULL) | |
302 | return(-1); | |
303 | ||
2e4fb373 | 304 | if (dir) { |
305 | ents = 0; | |
306 | *dir = xmalloc(sizeof(**dir)); | |
307 | (*dir)[0] = NULL; | |
308 | } | |
309 | ||
310 | ||
61e96248 | 311 | for(;;) { |
312 | int count; | |
313 | ||
9c5a8165 | 314 | id = expected_id = msg_id++; |
61e96248 | 315 | |
316 | debug3("Sending SSH2_FXP_READDIR I:%d", id); | |
317 | ||
318 | buffer_clear(&msg); | |
319 | buffer_put_char(&msg, SSH2_FXP_READDIR); | |
320 | buffer_put_int(&msg, id); | |
321 | buffer_put_string(&msg, handle, handle_len); | |
322 | send_msg(fd_out, &msg); | |
323 | ||
324 | buffer_clear(&msg); | |
325 | ||
326 | get_msg(fd_in, &msg); | |
327 | ||
328 | type = buffer_get_char(&msg); | |
329 | id = buffer_get_int(&msg); | |
330 | ||
331 | debug3("Received reply T:%d I:%d", type, id); | |
332 | ||
333 | if (id != expected_id) | |
334 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
335 | ||
336 | if (type == SSH2_FXP_STATUS) { | |
337 | int status = buffer_get_int(&msg); | |
338 | ||
339 | debug3("Received SSH2_FXP_STATUS %d", status); | |
340 | ||
341 | if (status == SSH2_FX_EOF) { | |
342 | break; | |
343 | } else { | |
344 | error("Couldn't read directory: %s", | |
345 | fx2txt(status)); | |
346 | do_close(fd_in, fd_out, handle, handle_len); | |
b655a207 | 347 | return(status); |
61e96248 | 348 | } |
349 | } else if (type != SSH2_FXP_NAME) | |
350 | fatal("Expected SSH2_FXP_NAME(%d) packet, got %d", | |
351 | SSH2_FXP_NAME, type); | |
352 | ||
353 | count = buffer_get_int(&msg); | |
0426a3b4 | 354 | if (count == 0) |
355 | break; | |
356 | debug3("Received %d SSH2_FXP_NAME responses", count); | |
61e96248 | 357 | for(i = 0; i < count; i++) { |
358 | char *filename, *longname; | |
359 | Attrib *a; | |
360 | ||
361 | filename = buffer_get_string(&msg, NULL); | |
362 | longname = buffer_get_string(&msg, NULL); | |
363 | a = decode_attrib(&msg); | |
364 | ||
2e4fb373 | 365 | if (printflag) |
366 | printf("%s\n", longname); | |
367 | ||
368 | if (dir) { | |
369 | *dir = xrealloc(*dir, sizeof(**dir) * | |
370 | (ents + 2)); | |
371 | (*dir)[ents] = xmalloc(sizeof(***dir)); | |
372 | (*dir)[ents]->filename = xstrdup(filename); | |
373 | (*dir)[ents]->longname = xstrdup(longname); | |
374 | memcpy(&(*dir)[ents]->a, a, sizeof(*a)); | |
375 | (*dir)[++ents] = NULL; | |
376 | } | |
61e96248 | 377 | |
378 | xfree(filename); | |
379 | xfree(longname); | |
380 | } | |
381 | } | |
382 | ||
383 | buffer_free(&msg); | |
384 | do_close(fd_in, fd_out, handle, handle_len); | |
385 | xfree(handle); | |
386 | ||
387 | return(0); | |
388 | } | |
389 | ||
2e4fb373 | 390 | int |
391 | do_ls(int fd_in, int fd_out, char *path) | |
392 | { | |
393 | return(do_lsreaddir(fd_in, fd_out, path, 1, NULL)); | |
394 | } | |
395 | ||
396 | int | |
397 | do_readdir(int fd_in, int fd_out, char *path, SFTP_DIRENT ***dir) | |
398 | { | |
399 | return(do_lsreaddir(fd_in, fd_out, path, 0, dir)); | |
400 | } | |
401 | ||
402 | void free_sftp_dirents(SFTP_DIRENT **s) | |
403 | { | |
404 | int i; | |
405 | ||
406 | for(i = 0; s[i]; i++) { | |
407 | xfree(s[i]->filename); | |
408 | xfree(s[i]->longname); | |
409 | xfree(s[i]); | |
410 | } | |
411 | xfree(s); | |
412 | } | |
413 | ||
61e96248 | 414 | int |
415 | do_rm(int fd_in, int fd_out, char *path) | |
416 | { | |
417 | u_int status, id; | |
418 | ||
419 | debug2("Sending SSH2_FXP_REMOVE \"%s\"", path); | |
420 | ||
9c5a8165 | 421 | id = msg_id++; |
61e96248 | 422 | send_string_request(fd_out, id, SSH2_FXP_REMOVE, path, strlen(path)); |
423 | status = get_status(fd_in, id); | |
424 | if (status != SSH2_FX_OK) | |
425 | error("Couldn't delete file: %s", fx2txt(status)); | |
426 | return(status); | |
427 | } | |
428 | ||
429 | int | |
430 | do_mkdir(int fd_in, int fd_out, char *path, Attrib *a) | |
431 | { | |
432 | u_int status, id; | |
433 | ||
9c5a8165 | 434 | id = msg_id++; |
61e96248 | 435 | send_string_attrs_request(fd_out, id, SSH2_FXP_MKDIR, path, |
436 | strlen(path), a); | |
437 | ||
438 | status = get_status(fd_in, id); | |
439 | if (status != SSH2_FX_OK) | |
440 | error("Couldn't create directory: %s", fx2txt(status)); | |
441 | ||
442 | return(status); | |
443 | } | |
444 | ||
445 | int | |
446 | do_rmdir(int fd_in, int fd_out, char *path) | |
447 | { | |
448 | u_int status, id; | |
449 | ||
9c5a8165 | 450 | id = msg_id++; |
61e96248 | 451 | send_string_request(fd_out, id, SSH2_FXP_RMDIR, path, strlen(path)); |
452 | ||
453 | status = get_status(fd_in, id); | |
454 | if (status != SSH2_FX_OK) | |
455 | error("Couldn't remove directory: %s", fx2txt(status)); | |
456 | ||
457 | return(status); | |
458 | } | |
459 | ||
460 | Attrib * | |
d50d9b63 | 461 | do_stat(int fd_in, int fd_out, char *path, int quiet) |
61e96248 | 462 | { |
463 | u_int id; | |
464 | ||
9c5a8165 | 465 | id = msg_id++; |
61e96248 | 466 | send_string_request(fd_out, id, SSH2_FXP_STAT, path, strlen(path)); |
d50d9b63 | 467 | return(get_decode_stat(fd_in, id, quiet)); |
61e96248 | 468 | } |
469 | ||
470 | Attrib * | |
d50d9b63 | 471 | do_lstat(int fd_in, int fd_out, char *path, int quiet) |
61e96248 | 472 | { |
473 | u_int id; | |
474 | ||
9c5a8165 | 475 | id = msg_id++; |
61e96248 | 476 | send_string_request(fd_out, id, SSH2_FXP_LSTAT, path, strlen(path)); |
d50d9b63 | 477 | return(get_decode_stat(fd_in, id, quiet)); |
61e96248 | 478 | } |
479 | ||
480 | Attrib * | |
d50d9b63 | 481 | do_fstat(int fd_in, int fd_out, char *handle, u_int handle_len, int quiet) |
61e96248 | 482 | { |
483 | u_int id; | |
484 | ||
9c5a8165 | 485 | id = msg_id++; |
61e96248 | 486 | send_string_request(fd_out, id, SSH2_FXP_FSTAT, handle, handle_len); |
d50d9b63 | 487 | return(get_decode_stat(fd_in, id, quiet)); |
61e96248 | 488 | } |
489 | ||
490 | int | |
491 | do_setstat(int fd_in, int fd_out, char *path, Attrib *a) | |
492 | { | |
493 | u_int status, id; | |
494 | ||
9c5a8165 | 495 | id = msg_id++; |
61e96248 | 496 | send_string_attrs_request(fd_out, id, SSH2_FXP_SETSTAT, path, |
497 | strlen(path), a); | |
498 | ||
499 | status = get_status(fd_in, id); | |
500 | if (status != SSH2_FX_OK) | |
501 | error("Couldn't setstat on \"%s\": %s", path, | |
502 | fx2txt(status)); | |
503 | ||
504 | return(status); | |
505 | } | |
506 | ||
507 | int | |
508 | do_fsetstat(int fd_in, int fd_out, char *handle, u_int handle_len, | |
509 | Attrib *a) | |
510 | { | |
511 | u_int status, id; | |
512 | ||
9c5a8165 | 513 | id = msg_id++; |
61e96248 | 514 | send_string_attrs_request(fd_out, id, SSH2_FXP_FSETSTAT, handle, |
515 | handle_len, a); | |
516 | ||
517 | status = get_status(fd_in, id); | |
518 | if (status != SSH2_FX_OK) | |
519 | error("Couldn't fsetstat: %s", fx2txt(status)); | |
520 | ||
521 | return(status); | |
522 | } | |
523 | ||
524 | char * | |
525 | do_realpath(int fd_in, int fd_out, char *path) | |
526 | { | |
527 | Buffer msg; | |
528 | u_int type, expected_id, count, id; | |
529 | char *filename, *longname; | |
530 | Attrib *a; | |
531 | ||
9c5a8165 | 532 | expected_id = id = msg_id++; |
3a7fe5ba | 533 | send_string_request(fd_out, id, SSH2_FXP_REALPATH, path, strlen(path)); |
61e96248 | 534 | |
535 | buffer_init(&msg); | |
536 | ||
537 | get_msg(fd_in, &msg); | |
538 | type = buffer_get_char(&msg); | |
539 | id = buffer_get_int(&msg); | |
540 | ||
541 | if (id != expected_id) | |
542 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
543 | ||
544 | if (type == SSH2_FXP_STATUS) { | |
545 | u_int status = buffer_get_int(&msg); | |
546 | ||
547 | error("Couldn't canonicalise: %s", fx2txt(status)); | |
548 | return(NULL); | |
549 | } else if (type != SSH2_FXP_NAME) | |
550 | fatal("Expected SSH2_FXP_NAME(%d) packet, got %d", | |
551 | SSH2_FXP_NAME, type); | |
552 | ||
553 | count = buffer_get_int(&msg); | |
554 | if (count != 1) | |
555 | fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count); | |
556 | ||
557 | filename = buffer_get_string(&msg, NULL); | |
558 | longname = buffer_get_string(&msg, NULL); | |
559 | a = decode_attrib(&msg); | |
560 | ||
561 | debug3("SSH_FXP_REALPATH %s -> %s", path, filename); | |
562 | ||
563 | xfree(longname); | |
564 | ||
565 | buffer_free(&msg); | |
566 | ||
567 | return(filename); | |
568 | } | |
569 | ||
570 | int | |
571 | do_rename(int fd_in, int fd_out, char *oldpath, char *newpath) | |
572 | { | |
573 | Buffer msg; | |
574 | u_int status, id; | |
575 | ||
576 | buffer_init(&msg); | |
577 | ||
578 | /* Send rename request */ | |
9c5a8165 | 579 | id = msg_id++; |
61e96248 | 580 | buffer_put_char(&msg, SSH2_FXP_RENAME); |
581 | buffer_put_int(&msg, id); | |
582 | buffer_put_cstring(&msg, oldpath); | |
583 | buffer_put_cstring(&msg, newpath); | |
584 | send_msg(fd_out, &msg); | |
585 | debug3("Sent message SSH2_FXP_RENAME \"%s\" -> \"%s\"", oldpath, | |
586 | newpath); | |
587 | buffer_free(&msg); | |
588 | ||
589 | status = get_status(fd_in, id); | |
590 | if (status != SSH2_FX_OK) | |
591 | error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, newpath, | |
592 | fx2txt(status)); | |
593 | ||
594 | return(status); | |
595 | } | |
596 | ||
3a7fe5ba | 597 | int |
598 | do_symlink(int fd_in, int fd_out, char *oldpath, char *newpath) | |
599 | { | |
600 | Buffer msg; | |
601 | u_int status, id; | |
602 | ||
603 | buffer_init(&msg); | |
604 | ||
605 | /* Send rename request */ | |
606 | id = msg_id++; | |
607 | buffer_put_char(&msg, SSH2_FXP_SYMLINK); | |
608 | buffer_put_int(&msg, id); | |
609 | buffer_put_cstring(&msg, oldpath); | |
610 | buffer_put_cstring(&msg, newpath); | |
611 | send_msg(fd_out, &msg); | |
612 | debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath, | |
613 | newpath); | |
614 | buffer_free(&msg); | |
615 | ||
616 | status = get_status(fd_in, id); | |
617 | if (status != SSH2_FX_OK) | |
618 | error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, newpath, | |
619 | fx2txt(status)); | |
620 | ||
621 | return(status); | |
622 | } | |
623 | ||
624 | char * | |
625 | do_readlink(int fd_in, int fd_out, char *path) | |
626 | { | |
627 | Buffer msg; | |
628 | u_int type, expected_id, count, id; | |
629 | char *filename, *longname; | |
630 | Attrib *a; | |
631 | ||
632 | expected_id = id = msg_id++; | |
633 | send_string_request(fd_out, id, SSH2_FXP_READLINK, path, strlen(path)); | |
634 | ||
635 | buffer_init(&msg); | |
636 | ||
637 | get_msg(fd_in, &msg); | |
638 | type = buffer_get_char(&msg); | |
639 | id = buffer_get_int(&msg); | |
640 | ||
641 | if (id != expected_id) | |
642 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
643 | ||
644 | if (type == SSH2_FXP_STATUS) { | |
645 | u_int status = buffer_get_int(&msg); | |
646 | ||
647 | error("Couldn't readlink: %s", fx2txt(status)); | |
648 | return(NULL); | |
649 | } else if (type != SSH2_FXP_NAME) | |
650 | fatal("Expected SSH2_FXP_NAME(%d) packet, got %d", | |
651 | SSH2_FXP_NAME, type); | |
652 | ||
653 | count = buffer_get_int(&msg); | |
654 | if (count != 1) | |
655 | fatal("Got multiple names (%d) from SSH_FXP_READLINK", count); | |
656 | ||
657 | filename = buffer_get_string(&msg, NULL); | |
658 | longname = buffer_get_string(&msg, NULL); | |
659 | a = decode_attrib(&msg); | |
660 | ||
661 | debug3("SSH_FXP_READLINK %s -> %s", path, filename); | |
662 | ||
663 | xfree(longname); | |
664 | ||
665 | buffer_free(&msg); | |
666 | ||
667 | return(filename); | |
668 | } | |
669 | ||
61e96248 | 670 | int |
671 | do_download(int fd_in, int fd_out, char *remote_path, char *local_path, | |
672 | int pflag) | |
673 | { | |
674 | int local_fd; | |
675 | u_int expected_id, handle_len, mode, type, id; | |
676 | u_int64_t offset; | |
677 | char *handle; | |
678 | Buffer msg; | |
679 | Attrib junk, *a; | |
0426a3b4 | 680 | int status; |
61e96248 | 681 | |
d50d9b63 | 682 | a = do_stat(fd_in, fd_out, remote_path, 0); |
61e96248 | 683 | if (a == NULL) |
684 | return(-1); | |
685 | ||
686 | /* XXX: should we preserve set[ug]id? */ | |
687 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) | |
688 | mode = S_IWRITE | (a->perm & 0777); | |
689 | else | |
690 | mode = 0666; | |
691 | ||
d50d9b63 | 692 | if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) && |
693 | (a->perm & S_IFDIR)) { | |
694 | error("Cannot download a directory: %s", remote_path); | |
695 | return(-1); | |
696 | } | |
697 | ||
61e96248 | 698 | local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC, mode); |
699 | if (local_fd == -1) { | |
700 | error("Couldn't open local file \"%s\" for writing: %s", | |
701 | local_path, strerror(errno)); | |
d50d9b63 | 702 | return(-1); |
61e96248 | 703 | } |
704 | ||
61e96248 | 705 | buffer_init(&msg); |
706 | ||
707 | /* Send open request */ | |
9c5a8165 | 708 | id = msg_id++; |
61e96248 | 709 | buffer_put_char(&msg, SSH2_FXP_OPEN); |
710 | buffer_put_int(&msg, id); | |
711 | buffer_put_cstring(&msg, remote_path); | |
712 | buffer_put_int(&msg, SSH2_FXF_READ); | |
713 | attrib_clear(&junk); /* Send empty attributes */ | |
714 | encode_attrib(&msg, &junk); | |
715 | send_msg(fd_out, &msg); | |
716 | debug3("Sent message SSH2_FXP_OPEN I:%d P:%s", id, remote_path); | |
717 | ||
718 | handle = get_handle(fd_in, id, &handle_len); | |
719 | if (handle == NULL) { | |
720 | buffer_free(&msg); | |
721 | close(local_fd); | |
722 | return(-1); | |
723 | } | |
724 | ||
725 | /* Read from remote and write to local */ | |
726 | offset = 0; | |
727 | for(;;) { | |
728 | u_int len; | |
729 | char *data; | |
730 | ||
9c5a8165 | 731 | id = expected_id = msg_id++; |
61e96248 | 732 | |
733 | buffer_clear(&msg); | |
734 | buffer_put_char(&msg, SSH2_FXP_READ); | |
735 | buffer_put_int(&msg, id); | |
736 | buffer_put_string(&msg, handle, handle_len); | |
737 | buffer_put_int64(&msg, offset); | |
738 | buffer_put_int(&msg, COPY_SIZE); | |
739 | send_msg(fd_out, &msg); | |
740 | debug3("Sent message SSH2_FXP_READ I:%d O:%llu S:%u", | |
490cad94 | 741 | id, (u_int64_t)offset, COPY_SIZE); |
61e96248 | 742 | |
743 | buffer_clear(&msg); | |
744 | ||
745 | get_msg(fd_in, &msg); | |
746 | type = buffer_get_char(&msg); | |
747 | id = buffer_get_int(&msg); | |
748 | debug3("Received reply T:%d I:%d", type, id); | |
749 | if (id != expected_id) | |
750 | fatal("ID mismatch (%d != %d)", id, expected_id); | |
751 | if (type == SSH2_FXP_STATUS) { | |
0426a3b4 | 752 | status = buffer_get_int(&msg); |
61e96248 | 753 | |
754 | if (status == SSH2_FX_EOF) | |
755 | break; | |
756 | else { | |
757 | error("Couldn't read from remote " | |
758 | "file \"%s\" : %s", remote_path, | |
759 | fx2txt(status)); | |
760 | do_close(fd_in, fd_out, handle, handle_len); | |
0426a3b4 | 761 | goto done; |
61e96248 | 762 | } |
763 | } else if (type != SSH2_FXP_DATA) { | |
764 | fatal("Expected SSH2_FXP_DATA(%d) packet, got %d", | |
765 | SSH2_FXP_DATA, type); | |
766 | } | |
767 | ||
768 | data = buffer_get_string(&msg, &len); | |
769 | if (len > COPY_SIZE) | |
770 | fatal("Received more data than asked for %d > %d", | |
771 | len, COPY_SIZE); | |
772 | ||
0426a3b4 | 773 | debug3("In read loop, got %d offset %llu", len, |
490cad94 | 774 | (u_int64_t)offset); |
61e96248 | 775 | if (atomicio(write, local_fd, data, len) != len) { |
776 | error("Couldn't write to \"%s\": %s", local_path, | |
777 | strerror(errno)); | |
778 | do_close(fd_in, fd_out, handle, handle_len); | |
0426a3b4 | 779 | status = -1; |
61e96248 | 780 | xfree(data); |
0426a3b4 | 781 | goto done; |
61e96248 | 782 | } |
783 | ||
784 | offset += len; | |
785 | xfree(data); | |
786 | } | |
0426a3b4 | 787 | status = do_close(fd_in, fd_out, handle, handle_len); |
61e96248 | 788 | |
58c54a79 | 789 | /* Override umask and utimes if asked */ |
663fd560 | 790 | #ifdef HAVE_FCHMOD |
58c54a79 | 791 | if (pflag && fchmod(local_fd, mode) == -1) |
663fd560 | 792 | #else |
793 | if (pflag && chmod(local_path, mode) == -1) | |
794 | #endif /* HAVE_FCHMOD */ | |
58c54a79 | 795 | error("Couldn't set mode on \"%s\": %s", local_path, |
796 | strerror(errno)); | |
797 | if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) { | |
798 | struct timeval tv[2]; | |
799 | tv[0].tv_sec = a->atime; | |
800 | tv[1].tv_sec = a->mtime; | |
801 | tv[0].tv_usec = tv[1].tv_usec = 0; | |
802 | if (utimes(local_path, tv) == -1) | |
803 | error("Can't set times on \"%s\": %s", local_path, | |
804 | strerror(errno)); | |
805 | } | |
806 | ||
0426a3b4 | 807 | done: |
808 | close(local_fd); | |
809 | buffer_free(&msg); | |
810 | xfree(handle); | |
811 | return status; | |
61e96248 | 812 | } |
813 | ||
814 | int | |
815 | do_upload(int fd_in, int fd_out, char *local_path, char *remote_path, | |
816 | int pflag) | |
817 | { | |
818 | int local_fd; | |
819 | u_int handle_len, id; | |
820 | u_int64_t offset; | |
821 | char *handle; | |
822 | Buffer msg; | |
823 | struct stat sb; | |
824 | Attrib a; | |
0426a3b4 | 825 | int status; |
61e96248 | 826 | |
827 | if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) { | |
828 | error("Couldn't open local file \"%s\" for reading: %s", | |
829 | local_path, strerror(errno)); | |
830 | return(-1); | |
831 | } | |
832 | if (fstat(local_fd, &sb) == -1) { | |
833 | error("Couldn't fstat local file \"%s\": %s", | |
834 | local_path, strerror(errno)); | |
835 | close(local_fd); | |
836 | return(-1); | |
837 | } | |
838 | stat_to_attrib(&sb, &a); | |
839 | ||
840 | a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; | |
841 | a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; | |
842 | a.perm &= 0777; | |
843 | if (!pflag) | |
844 | a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; | |
845 | ||
846 | buffer_init(&msg); | |
847 | ||
848 | /* Send open request */ | |
9c5a8165 | 849 | id = msg_id++; |
61e96248 | 850 | buffer_put_char(&msg, SSH2_FXP_OPEN); |
851 | buffer_put_int(&msg, id); | |
852 | buffer_put_cstring(&msg, remote_path); | |
853 | buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC); | |
854 | encode_attrib(&msg, &a); | |
855 | send_msg(fd_out, &msg); | |
856 | debug3("Sent message SSH2_FXP_OPEN I:%d P:%s", id, remote_path); | |
857 | ||
858 | buffer_clear(&msg); | |
859 | ||
860 | handle = get_handle(fd_in, id, &handle_len); | |
861 | if (handle == NULL) { | |
862 | close(local_fd); | |
863 | buffer_free(&msg); | |
864 | return(-1); | |
865 | } | |
866 | ||
61e96248 | 867 | /* Read from local and write to remote */ |
868 | offset = 0; | |
869 | for(;;) { | |
870 | int len; | |
871 | char data[COPY_SIZE]; | |
61e96248 | 872 | |
873 | /* | |
874 | * Can't use atomicio here because it returns 0 on EOF, thus losing | |
875 | * the last block of the file | |
876 | */ | |
877 | do | |
878 | len = read(local_fd, data, COPY_SIZE); | |
879 | while ((len == -1) && (errno == EINTR || errno == EAGAIN)); | |
880 | ||
881 | if (len == -1) | |
882 | fatal("Couldn't read from \"%s\": %s", local_path, | |
883 | strerror(errno)); | |
884 | if (len == 0) | |
885 | break; | |
886 | ||
887 | buffer_clear(&msg); | |
888 | buffer_put_char(&msg, SSH2_FXP_WRITE); | |
889 | buffer_put_int(&msg, ++id); | |
890 | buffer_put_string(&msg, handle, handle_len); | |
891 | buffer_put_int64(&msg, offset); | |
892 | buffer_put_string(&msg, data, len); | |
893 | send_msg(fd_out, &msg); | |
894 | debug3("Sent message SSH2_FXP_WRITE I:%d O:%llu S:%u", | |
490cad94 | 895 | id, (u_int64_t)offset, len); |
61e96248 | 896 | |
897 | status = get_status(fd_in, id); | |
898 | if (status != SSH2_FX_OK) { | |
899 | error("Couldn't write to remote file \"%s\": %s", | |
900 | remote_path, fx2txt(status)); | |
901 | do_close(fd_in, fd_out, handle, handle_len); | |
61e96248 | 902 | close(local_fd); |
0426a3b4 | 903 | goto done; |
61e96248 | 904 | } |
9378f292 | 905 | debug3("In write loop, got %d offset %llu", len, |
490cad94 | 906 | (u_int64_t)offset); |
61e96248 | 907 | |
908 | offset += len; | |
909 | } | |
61e96248 | 910 | |
911 | if (close(local_fd) == -1) { | |
912 | error("Couldn't close local file \"%s\": %s", local_path, | |
913 | strerror(errno)); | |
914 | do_close(fd_in, fd_out, handle, handle_len); | |
0426a3b4 | 915 | status = -1; |
916 | goto done; | |
61e96248 | 917 | } |
918 | ||
58c54a79 | 919 | /* Override umask and utimes if asked */ |
920 | if (pflag) | |
921 | do_fsetstat(fd_in, fd_out, handle, handle_len, &a); | |
922 | ||
0426a3b4 | 923 | status = do_close(fd_in, fd_out, handle, handle_len); |
924 | ||
925 | done: | |
926 | xfree(handle); | |
927 | buffer_free(&msg); | |
928 | return status; | |
61e96248 | 929 | } |
2e4fb373 | 930 |