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61e96248 | 1 | /* |
ab3932ab | 2 | * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org> |
61e96248 | 3 | * |
ab3932ab | 4 | * Permission to use, copy, modify, and distribute this software for any |
5 | * purpose with or without fee is hereby granted, provided that the above | |
6 | * copyright notice and this permission notice appear in all copies. | |
61e96248 | 7 | * |
ab3932ab | 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
61e96248 | 15 | */ |
16 | ||
17 | /* XXX: memleaks */ | |
18 | /* XXX: signed vs unsigned */ | |
22e6c827 | 19 | /* XXX: remove all logging, only return status codes */ |
61e96248 | 20 | /* XXX: copy between two remote sites */ |
21 | ||
22 | #include "includes.h" | |
4095f623 | 23 | RCSID("$OpenBSD: sftp-client.c,v 1.60 2006/02/20 17:19:54 stevesk Exp $"); |
24 | ||
25 | #include <sys/types.h> | |
26 | #ifdef HAVE_SYS_STAT_H | |
27 | # include <sys/stat.h> | |
28 | #endif | |
b5b88c19 | 29 | # include <signal.h> |
c25d3df7 | 30 | |
9fd2a215 | 31 | #include "openbsd-compat/sys-queue.h" |
61e96248 | 32 | |
61e96248 | 33 | #include "buffer.h" |
34 | #include "bufaux.h" | |
35 | #include "getput.h" | |
36 | #include "xmalloc.h" | |
37 | #include "log.h" | |
38 | #include "atomicio.h" | |
b65c3807 | 39 | #include "progressmeter.h" |
61e96248 | 40 | |
41 | #include "sftp.h" | |
42 | #include "sftp-common.h" | |
43 | #include "sftp-client.h" | |
44 | ||
0e5de6f8 | 45 | extern volatile sig_atomic_t interrupted; |
b65c3807 | 46 | extern int showprogress; |
47 | ||
2db34ac9 | 48 | /* Minimum amount of data to read at a time */ |
c25d3df7 | 49 | #define MIN_READ_SIZE 512 |
50 | ||
22e6c827 | 51 | struct sftp_conn { |
52 | int fd_in; | |
53 | int fd_out; | |
54 | u_int transfer_buflen; | |
55 | u_int num_requests; | |
56 | u_int version; | |
57 | u_int msg_id; | |
58 | }; | |
9c5a8165 | 59 | |
396c147e | 60 | static void |
61e96248 | 61 | send_msg(int fd, Buffer *m) |
62 | { | |
bf0bf24b | 63 | u_char mlen[4]; |
64 | ||
3eee3b86 | 65 | if (buffer_len(m) > SFTP_MAX_MSG_LENGTH) |
bf0bf24b | 66 | fatal("Outbound message too long %u", buffer_len(m)); |
61e96248 | 67 | |
bf0bf24b | 68 | /* Send length first */ |
69 | PUT_32BIT(mlen, buffer_len(m)); | |
05624c18 | 70 | if (atomicio(vwrite, fd, mlen, sizeof(mlen)) != sizeof(mlen)) |
bf0bf24b | 71 | fatal("Couldn't send packet: %s", strerror(errno)); |
61e96248 | 72 | |
05624c18 | 73 | if (atomicio(vwrite, fd, buffer_ptr(m), buffer_len(m)) != buffer_len(m)) |
61e96248 | 74 | fatal("Couldn't send packet: %s", strerror(errno)); |
75 | ||
bf0bf24b | 76 | buffer_clear(m); |
61e96248 | 77 | } |
78 | ||
396c147e | 79 | static void |
61e96248 | 80 | get_msg(int fd, Buffer *m) |
81 | { | |
bf0bf24b | 82 | u_int msg_len; |
61e96248 | 83 | |
bf0bf24b | 84 | buffer_append_space(m, 4); |
05624c18 | 85 | if (atomicio(read, fd, buffer_ptr(m), 4) != 4) { |
86 | if (errno == EPIPE) | |
87 | fatal("Connection closed"); | |
88 | else | |
89 | fatal("Couldn't read packet: %s", strerror(errno)); | |
90 | } | |
61e96248 | 91 | |
bf0bf24b | 92 | msg_len = buffer_get_int(m); |
3eee3b86 | 93 | if (msg_len > SFTP_MAX_MSG_LENGTH) |
9906a836 | 94 | fatal("Received message too long %u", msg_len); |
61e96248 | 95 | |
bf0bf24b | 96 | buffer_append_space(m, msg_len); |
05624c18 | 97 | if (atomicio(read, fd, buffer_ptr(m), msg_len) != msg_len) { |
98 | if (errno == EPIPE) | |
99 | fatal("Connection closed"); | |
100 | else | |
101 | fatal("Read packet: %s", strerror(errno)); | |
102 | } | |
61e96248 | 103 | } |
104 | ||
396c147e | 105 | static void |
61e96248 | 106 | send_string_request(int fd, u_int id, u_int code, char *s, |
107 | u_int len) | |
108 | { | |
109 | Buffer msg; | |
110 | ||
111 | buffer_init(&msg); | |
112 | buffer_put_char(&msg, code); | |
113 | buffer_put_int(&msg, id); | |
114 | buffer_put_string(&msg, s, len); | |
115 | send_msg(fd, &msg); | |
9906a836 | 116 | debug3("Sent message fd %d T:%u I:%u", fd, code, id); |
61e96248 | 117 | buffer_free(&msg); |
118 | } | |
119 | ||
396c147e | 120 | static void |
61e96248 | 121 | send_string_attrs_request(int fd, u_int id, u_int code, char *s, |
122 | u_int len, Attrib *a) | |
123 | { | |
124 | Buffer msg; | |
125 | ||
126 | buffer_init(&msg); | |
127 | buffer_put_char(&msg, code); | |
128 | buffer_put_int(&msg, id); | |
129 | buffer_put_string(&msg, s, len); | |
130 | encode_attrib(&msg, a); | |
131 | send_msg(fd, &msg); | |
9906a836 | 132 | debug3("Sent message fd %d T:%u I:%u", fd, code, id); |
61e96248 | 133 | buffer_free(&msg); |
134 | } | |
135 | ||
396c147e | 136 | static u_int |
9906a836 | 137 | get_status(int fd, u_int expected_id) |
61e96248 | 138 | { |
139 | Buffer msg; | |
140 | u_int type, id, status; | |
141 | ||
142 | buffer_init(&msg); | |
143 | get_msg(fd, &msg); | |
144 | type = buffer_get_char(&msg); | |
145 | id = buffer_get_int(&msg); | |
146 | ||
147 | if (id != expected_id) | |
9906a836 | 148 | fatal("ID mismatch (%u != %u)", id, expected_id); |
61e96248 | 149 | if (type != SSH2_FXP_STATUS) |
9906a836 | 150 | fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u", |
61e96248 | 151 | SSH2_FXP_STATUS, type); |
152 | ||
153 | status = buffer_get_int(&msg); | |
154 | buffer_free(&msg); | |
155 | ||
9906a836 | 156 | debug3("SSH2_FXP_STATUS %u", status); |
61e96248 | 157 | |
158 | return(status); | |
159 | } | |
160 | ||
396c147e | 161 | static char * |
61e96248 | 162 | get_handle(int fd, u_int expected_id, u_int *len) |
163 | { | |
164 | Buffer msg; | |
165 | u_int type, id; | |
166 | char *handle; | |
167 | ||
168 | buffer_init(&msg); | |
169 | get_msg(fd, &msg); | |
170 | type = buffer_get_char(&msg); | |
171 | id = buffer_get_int(&msg); | |
172 | ||
173 | if (id != expected_id) | |
9906a836 | 174 | fatal("ID mismatch (%u != %u)", id, expected_id); |
61e96248 | 175 | if (type == SSH2_FXP_STATUS) { |
176 | int status = buffer_get_int(&msg); | |
177 | ||
178 | error("Couldn't get handle: %s", fx2txt(status)); | |
aa41be57 | 179 | buffer_free(&msg); |
61e96248 | 180 | return(NULL); |
181 | } else if (type != SSH2_FXP_HANDLE) | |
9906a836 | 182 | fatal("Expected SSH2_FXP_HANDLE(%u) packet, got %u", |
61e96248 | 183 | SSH2_FXP_HANDLE, type); |
184 | ||
185 | handle = buffer_get_string(&msg, len); | |
186 | buffer_free(&msg); | |
187 | ||
188 | return(handle); | |
189 | } | |
190 | ||
396c147e | 191 | static Attrib * |
d50d9b63 | 192 | get_decode_stat(int fd, u_int expected_id, int quiet) |
61e96248 | 193 | { |
194 | Buffer msg; | |
195 | u_int type, id; | |
196 | Attrib *a; | |
197 | ||
198 | buffer_init(&msg); | |
199 | get_msg(fd, &msg); | |
200 | ||
201 | type = buffer_get_char(&msg); | |
202 | id = buffer_get_int(&msg); | |
203 | ||
9906a836 | 204 | debug3("Received stat reply T:%u I:%u", type, id); |
61e96248 | 205 | if (id != expected_id) |
9906a836 | 206 | fatal("ID mismatch (%u != %u)", id, expected_id); |
61e96248 | 207 | if (type == SSH2_FXP_STATUS) { |
208 | int status = buffer_get_int(&msg); | |
209 | ||
d50d9b63 | 210 | if (quiet) |
211 | debug("Couldn't stat remote file: %s", fx2txt(status)); | |
212 | else | |
213 | error("Couldn't stat remote file: %s", fx2txt(status)); | |
aa41be57 | 214 | buffer_free(&msg); |
61e96248 | 215 | return(NULL); |
216 | } else if (type != SSH2_FXP_ATTRS) { | |
9906a836 | 217 | fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u", |
61e96248 | 218 | SSH2_FXP_ATTRS, type); |
219 | } | |
220 | a = decode_attrib(&msg); | |
221 | buffer_free(&msg); | |
222 | ||
223 | return(a); | |
224 | } | |
225 | ||
22e6c827 | 226 | struct sftp_conn * |
227 | do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests) | |
61e96248 | 228 | { |
9906a836 | 229 | u_int type; |
230 | int version; | |
61e96248 | 231 | Buffer msg; |
22e6c827 | 232 | struct sftp_conn *ret; |
61e96248 | 233 | |
234 | buffer_init(&msg); | |
235 | buffer_put_char(&msg, SSH2_FXP_INIT); | |
236 | buffer_put_int(&msg, SSH2_FILEXFER_VERSION); | |
237 | send_msg(fd_out, &msg); | |
238 | ||
239 | buffer_clear(&msg); | |
240 | ||
241 | get_msg(fd_in, &msg); | |
242 | ||
2b87da3b | 243 | /* Expecting a VERSION reply */ |
61e96248 | 244 | if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) { |
9906a836 | 245 | error("Invalid packet back from SSH2_FXP_INIT (type %u)", |
61e96248 | 246 | type); |
247 | buffer_free(&msg); | |
22e6c827 | 248 | return(NULL); |
61e96248 | 249 | } |
250 | version = buffer_get_int(&msg); | |
251 | ||
252 | debug2("Remote version: %d", version); | |
253 | ||
254 | /* Check for extensions */ | |
255 | while (buffer_len(&msg) > 0) { | |
256 | char *name = buffer_get_string(&msg, NULL); | |
257 | char *value = buffer_get_string(&msg, NULL); | |
258 | ||
259 | debug2("Init extension: \"%s\"", name); | |
260 | xfree(name); | |
261 | xfree(value); | |
262 | } | |
263 | ||
264 | buffer_free(&msg); | |
3a7fe5ba | 265 | |
22e6c827 | 266 | ret = xmalloc(sizeof(*ret)); |
267 | ret->fd_in = fd_in; | |
268 | ret->fd_out = fd_out; | |
269 | ret->transfer_buflen = transfer_buflen; | |
270 | ret->num_requests = num_requests; | |
271 | ret->version = version; | |
272 | ret->msg_id = 1; | |
273 | ||
274 | /* Some filexfer v.0 servers don't support large packets */ | |
275 | if (version == 0) | |
92053302 | 276 | ret->transfer_buflen = MIN(ret->transfer_buflen, 20480); |
22e6c827 | 277 | |
278 | return(ret); | |
279 | } | |
280 | ||
281 | u_int | |
282 | sftp_proto_version(struct sftp_conn *conn) | |
283 | { | |
284 | return(conn->version); | |
61e96248 | 285 | } |
286 | ||
287 | int | |
22e6c827 | 288 | do_close(struct sftp_conn *conn, char *handle, u_int handle_len) |
61e96248 | 289 | { |
290 | u_int id, status; | |
291 | Buffer msg; | |
292 | ||
293 | buffer_init(&msg); | |
294 | ||
22e6c827 | 295 | id = conn->msg_id++; |
61e96248 | 296 | buffer_put_char(&msg, SSH2_FXP_CLOSE); |
297 | buffer_put_int(&msg, id); | |
298 | buffer_put_string(&msg, handle, handle_len); | |
22e6c827 | 299 | send_msg(conn->fd_out, &msg); |
9906a836 | 300 | debug3("Sent message SSH2_FXP_CLOSE I:%u", id); |
61e96248 | 301 | |
22e6c827 | 302 | status = get_status(conn->fd_in, id); |
61e96248 | 303 | if (status != SSH2_FX_OK) |
304 | error("Couldn't close file: %s", fx2txt(status)); | |
305 | ||
306 | buffer_free(&msg); | |
307 | ||
308 | return(status); | |
309 | } | |
310 | ||
2e4fb373 | 311 | |
396c147e | 312 | static int |
22e6c827 | 313 | do_lsreaddir(struct sftp_conn *conn, char *path, int printflag, |
2e4fb373 | 314 | SFTP_DIRENT ***dir) |
61e96248 | 315 | { |
316 | Buffer msg; | |
2ceb8101 | 317 | u_int count, type, id, handle_len, i, expected_id, ents = 0; |
61e96248 | 318 | char *handle; |
319 | ||
22e6c827 | 320 | id = conn->msg_id++; |
61e96248 | 321 | |
322 | buffer_init(&msg); | |
323 | buffer_put_char(&msg, SSH2_FXP_OPENDIR); | |
324 | buffer_put_int(&msg, id); | |
325 | buffer_put_cstring(&msg, path); | |
22e6c827 | 326 | send_msg(conn->fd_out, &msg); |
61e96248 | 327 | |
328 | buffer_clear(&msg); | |
329 | ||
22e6c827 | 330 | handle = get_handle(conn->fd_in, id, &handle_len); |
61e96248 | 331 | if (handle == NULL) |
332 | return(-1); | |
333 | ||
2e4fb373 | 334 | if (dir) { |
335 | ents = 0; | |
336 | *dir = xmalloc(sizeof(**dir)); | |
337 | (*dir)[0] = NULL; | |
338 | } | |
2e4fb373 | 339 | |
0e5de6f8 | 340 | for (; !interrupted;) { |
22e6c827 | 341 | id = expected_id = conn->msg_id++; |
61e96248 | 342 | |
9906a836 | 343 | debug3("Sending SSH2_FXP_READDIR I:%u", id); |
61e96248 | 344 | |
345 | buffer_clear(&msg); | |
346 | buffer_put_char(&msg, SSH2_FXP_READDIR); | |
347 | buffer_put_int(&msg, id); | |
348 | buffer_put_string(&msg, handle, handle_len); | |
22e6c827 | 349 | send_msg(conn->fd_out, &msg); |
61e96248 | 350 | |
351 | buffer_clear(&msg); | |
352 | ||
22e6c827 | 353 | get_msg(conn->fd_in, &msg); |
61e96248 | 354 | |
355 | type = buffer_get_char(&msg); | |
356 | id = buffer_get_int(&msg); | |
357 | ||
9906a836 | 358 | debug3("Received reply T:%u I:%u", type, id); |
61e96248 | 359 | |
360 | if (id != expected_id) | |
9906a836 | 361 | fatal("ID mismatch (%u != %u)", id, expected_id); |
61e96248 | 362 | |
363 | if (type == SSH2_FXP_STATUS) { | |
364 | int status = buffer_get_int(&msg); | |
365 | ||
366 | debug3("Received SSH2_FXP_STATUS %d", status); | |
367 | ||
368 | if (status == SSH2_FX_EOF) { | |
369 | break; | |
370 | } else { | |
371 | error("Couldn't read directory: %s", | |
372 | fx2txt(status)); | |
22e6c827 | 373 | do_close(conn, handle, handle_len); |
3e2f2431 | 374 | xfree(handle); |
b655a207 | 375 | return(status); |
61e96248 | 376 | } |
377 | } else if (type != SSH2_FXP_NAME) | |
9906a836 | 378 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", |
61e96248 | 379 | SSH2_FXP_NAME, type); |
380 | ||
381 | count = buffer_get_int(&msg); | |
0426a3b4 | 382 | if (count == 0) |
383 | break; | |
384 | debug3("Received %d SSH2_FXP_NAME responses", count); | |
184eed6a | 385 | for (i = 0; i < count; i++) { |
61e96248 | 386 | char *filename, *longname; |
387 | Attrib *a; | |
388 | ||
389 | filename = buffer_get_string(&msg, NULL); | |
390 | longname = buffer_get_string(&msg, NULL); | |
391 | a = decode_attrib(&msg); | |
392 | ||
2e4fb373 | 393 | if (printflag) |
394 | printf("%s\n", longname); | |
395 | ||
396 | if (dir) { | |
cd332296 | 397 | *dir = xrealloc(*dir, sizeof(**dir) * |
2e4fb373 | 398 | (ents + 2)); |
399 | (*dir)[ents] = xmalloc(sizeof(***dir)); | |
400 | (*dir)[ents]->filename = xstrdup(filename); | |
401 | (*dir)[ents]->longname = xstrdup(longname); | |
402 | memcpy(&(*dir)[ents]->a, a, sizeof(*a)); | |
403 | (*dir)[++ents] = NULL; | |
404 | } | |
61e96248 | 405 | |
406 | xfree(filename); | |
407 | xfree(longname); | |
408 | } | |
409 | } | |
410 | ||
411 | buffer_free(&msg); | |
22e6c827 | 412 | do_close(conn, handle, handle_len); |
61e96248 | 413 | xfree(handle); |
414 | ||
0e5de6f8 | 415 | /* Don't return partial matches on interrupt */ |
416 | if (interrupted && dir != NULL && *dir != NULL) { | |
417 | free_sftp_dirents(*dir); | |
418 | *dir = xmalloc(sizeof(**dir)); | |
419 | **dir = NULL; | |
420 | } | |
421 | ||
61e96248 | 422 | return(0); |
423 | } | |
424 | ||
2e4fb373 | 425 | int |
22e6c827 | 426 | do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir) |
2e4fb373 | 427 | { |
22e6c827 | 428 | return(do_lsreaddir(conn, path, 0, dir)); |
2e4fb373 | 429 | } |
430 | ||
431 | void free_sftp_dirents(SFTP_DIRENT **s) | |
432 | { | |
433 | int i; | |
184eed6a | 434 | |
435 | for (i = 0; s[i]; i++) { | |
2e4fb373 | 436 | xfree(s[i]->filename); |
437 | xfree(s[i]->longname); | |
438 | xfree(s[i]); | |
439 | } | |
440 | xfree(s); | |
441 | } | |
442 | ||
61e96248 | 443 | int |
22e6c827 | 444 | do_rm(struct sftp_conn *conn, char *path) |
61e96248 | 445 | { |
446 | u_int status, id; | |
447 | ||
448 | debug2("Sending SSH2_FXP_REMOVE \"%s\"", path); | |
449 | ||
22e6c827 | 450 | id = conn->msg_id++; |
762715ce | 451 | send_string_request(conn->fd_out, id, SSH2_FXP_REMOVE, path, |
22e6c827 | 452 | strlen(path)); |
453 | status = get_status(conn->fd_in, id); | |
61e96248 | 454 | if (status != SSH2_FX_OK) |
455 | error("Couldn't delete file: %s", fx2txt(status)); | |
456 | return(status); | |
457 | } | |
458 | ||
459 | int | |
22e6c827 | 460 | do_mkdir(struct sftp_conn *conn, char *path, Attrib *a) |
61e96248 | 461 | { |
462 | u_int status, id; | |
463 | ||
22e6c827 | 464 | id = conn->msg_id++; |
465 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_MKDIR, path, | |
61e96248 | 466 | strlen(path), a); |
467 | ||
22e6c827 | 468 | status = get_status(conn->fd_in, id); |
61e96248 | 469 | if (status != SSH2_FX_OK) |
470 | error("Couldn't create directory: %s", fx2txt(status)); | |
471 | ||
472 | return(status); | |
473 | } | |
474 | ||
475 | int | |
22e6c827 | 476 | do_rmdir(struct sftp_conn *conn, char *path) |
61e96248 | 477 | { |
478 | u_int status, id; | |
479 | ||
22e6c827 | 480 | id = conn->msg_id++; |
481 | send_string_request(conn->fd_out, id, SSH2_FXP_RMDIR, path, | |
482 | strlen(path)); | |
61e96248 | 483 | |
22e6c827 | 484 | status = get_status(conn->fd_in, id); |
61e96248 | 485 | if (status != SSH2_FX_OK) |
486 | error("Couldn't remove directory: %s", fx2txt(status)); | |
487 | ||
488 | return(status); | |
489 | } | |
490 | ||
491 | Attrib * | |
22e6c827 | 492 | do_stat(struct sftp_conn *conn, char *path, int quiet) |
61e96248 | 493 | { |
494 | u_int id; | |
495 | ||
22e6c827 | 496 | id = conn->msg_id++; |
497 | ||
762715ce | 498 | send_string_request(conn->fd_out, id, |
499 | conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT, | |
22e6c827 | 500 | path, strlen(path)); |
501 | ||
502 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
61e96248 | 503 | } |
504 | ||
505 | Attrib * | |
22e6c827 | 506 | do_lstat(struct sftp_conn *conn, char *path, int quiet) |
61e96248 | 507 | { |
508 | u_int id; | |
509 | ||
22e6c827 | 510 | if (conn->version == 0) { |
511 | if (quiet) | |
512 | debug("Server version does not support lstat operation"); | |
513 | else | |
bbe88b6d | 514 | logit("Server version does not support lstat operation"); |
9c74a24d | 515 | return(do_stat(conn, path, quiet)); |
22e6c827 | 516 | } |
517 | ||
518 | id = conn->msg_id++; | |
519 | send_string_request(conn->fd_out, id, SSH2_FXP_LSTAT, path, | |
520 | strlen(path)); | |
521 | ||
522 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
61e96248 | 523 | } |
524 | ||
525 | Attrib * | |
22e6c827 | 526 | do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet) |
61e96248 | 527 | { |
528 | u_int id; | |
529 | ||
22e6c827 | 530 | id = conn->msg_id++; |
531 | send_string_request(conn->fd_out, id, SSH2_FXP_FSTAT, handle, | |
532 | handle_len); | |
533 | ||
534 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
61e96248 | 535 | } |
536 | ||
537 | int | |
22e6c827 | 538 | do_setstat(struct sftp_conn *conn, char *path, Attrib *a) |
61e96248 | 539 | { |
540 | u_int status, id; | |
541 | ||
22e6c827 | 542 | id = conn->msg_id++; |
543 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_SETSTAT, path, | |
61e96248 | 544 | strlen(path), a); |
545 | ||
22e6c827 | 546 | status = get_status(conn->fd_in, id); |
61e96248 | 547 | if (status != SSH2_FX_OK) |
548 | error("Couldn't setstat on \"%s\": %s", path, | |
549 | fx2txt(status)); | |
550 | ||
551 | return(status); | |
552 | } | |
553 | ||
554 | int | |
22e6c827 | 555 | do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len, |
61e96248 | 556 | Attrib *a) |
557 | { | |
558 | u_int status, id; | |
559 | ||
22e6c827 | 560 | id = conn->msg_id++; |
561 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_FSETSTAT, handle, | |
61e96248 | 562 | handle_len, a); |
563 | ||
22e6c827 | 564 | status = get_status(conn->fd_in, id); |
61e96248 | 565 | if (status != SSH2_FX_OK) |
566 | error("Couldn't fsetstat: %s", fx2txt(status)); | |
567 | ||
568 | return(status); | |
569 | } | |
570 | ||
571 | char * | |
22e6c827 | 572 | do_realpath(struct sftp_conn *conn, char *path) |
61e96248 | 573 | { |
574 | Buffer msg; | |
575 | u_int type, expected_id, count, id; | |
576 | char *filename, *longname; | |
577 | Attrib *a; | |
578 | ||
22e6c827 | 579 | expected_id = id = conn->msg_id++; |
580 | send_string_request(conn->fd_out, id, SSH2_FXP_REALPATH, path, | |
581 | strlen(path)); | |
61e96248 | 582 | |
583 | buffer_init(&msg); | |
584 | ||
22e6c827 | 585 | get_msg(conn->fd_in, &msg); |
61e96248 | 586 | type = buffer_get_char(&msg); |
587 | id = buffer_get_int(&msg); | |
588 | ||
589 | if (id != expected_id) | |
9906a836 | 590 | fatal("ID mismatch (%u != %u)", id, expected_id); |
61e96248 | 591 | |
592 | if (type == SSH2_FXP_STATUS) { | |
593 | u_int status = buffer_get_int(&msg); | |
594 | ||
595 | error("Couldn't canonicalise: %s", fx2txt(status)); | |
596 | return(NULL); | |
597 | } else if (type != SSH2_FXP_NAME) | |
9906a836 | 598 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", |
61e96248 | 599 | SSH2_FXP_NAME, type); |
600 | ||
601 | count = buffer_get_int(&msg); | |
602 | if (count != 1) | |
603 | fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count); | |
604 | ||
605 | filename = buffer_get_string(&msg, NULL); | |
606 | longname = buffer_get_string(&msg, NULL); | |
607 | a = decode_attrib(&msg); | |
608 | ||
609 | debug3("SSH_FXP_REALPATH %s -> %s", path, filename); | |
610 | ||
611 | xfree(longname); | |
612 | ||
613 | buffer_free(&msg); | |
614 | ||
615 | return(filename); | |
616 | } | |
617 | ||
618 | int | |
22e6c827 | 619 | do_rename(struct sftp_conn *conn, char *oldpath, char *newpath) |
61e96248 | 620 | { |
621 | Buffer msg; | |
622 | u_int status, id; | |
623 | ||
624 | buffer_init(&msg); | |
625 | ||
626 | /* Send rename request */ | |
22e6c827 | 627 | id = conn->msg_id++; |
61e96248 | 628 | buffer_put_char(&msg, SSH2_FXP_RENAME); |
629 | buffer_put_int(&msg, id); | |
630 | buffer_put_cstring(&msg, oldpath); | |
631 | buffer_put_cstring(&msg, newpath); | |
22e6c827 | 632 | send_msg(conn->fd_out, &msg); |
61e96248 | 633 | debug3("Sent message SSH2_FXP_RENAME \"%s\" -> \"%s\"", oldpath, |
634 | newpath); | |
635 | buffer_free(&msg); | |
636 | ||
22e6c827 | 637 | status = get_status(conn->fd_in, id); |
61e96248 | 638 | if (status != SSH2_FX_OK) |
22e6c827 | 639 | error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, |
640 | newpath, fx2txt(status)); | |
61e96248 | 641 | |
642 | return(status); | |
643 | } | |
644 | ||
3a7fe5ba | 645 | int |
22e6c827 | 646 | do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath) |
3a7fe5ba | 647 | { |
648 | Buffer msg; | |
649 | u_int status, id; | |
650 | ||
22e6c827 | 651 | if (conn->version < 3) { |
652 | error("This server does not support the symlink operation"); | |
653 | return(SSH2_FX_OP_UNSUPPORTED); | |
654 | } | |
655 | ||
3a7fe5ba | 656 | buffer_init(&msg); |
657 | ||
b093b499 | 658 | /* Send symlink request */ |
22e6c827 | 659 | id = conn->msg_id++; |
3a7fe5ba | 660 | buffer_put_char(&msg, SSH2_FXP_SYMLINK); |
661 | buffer_put_int(&msg, id); | |
662 | buffer_put_cstring(&msg, oldpath); | |
663 | buffer_put_cstring(&msg, newpath); | |
22e6c827 | 664 | send_msg(conn->fd_out, &msg); |
3a7fe5ba | 665 | debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath, |
666 | newpath); | |
667 | buffer_free(&msg); | |
668 | ||
22e6c827 | 669 | status = get_status(conn->fd_in, id); |
3a7fe5ba | 670 | if (status != SSH2_FX_OK) |
9db1a8e9 | 671 | error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath, |
22e6c827 | 672 | newpath, fx2txt(status)); |
3a7fe5ba | 673 | |
674 | return(status); | |
675 | } | |
676 | ||
677 | char * | |
22e6c827 | 678 | do_readlink(struct sftp_conn *conn, char *path) |
3a7fe5ba | 679 | { |
680 | Buffer msg; | |
681 | u_int type, expected_id, count, id; | |
682 | char *filename, *longname; | |
683 | Attrib *a; | |
684 | ||
22e6c827 | 685 | expected_id = id = conn->msg_id++; |
686 | send_string_request(conn->fd_out, id, SSH2_FXP_READLINK, path, | |
687 | strlen(path)); | |
3a7fe5ba | 688 | |
689 | buffer_init(&msg); | |
690 | ||
22e6c827 | 691 | get_msg(conn->fd_in, &msg); |
3a7fe5ba | 692 | type = buffer_get_char(&msg); |
693 | id = buffer_get_int(&msg); | |
694 | ||
695 | if (id != expected_id) | |
9906a836 | 696 | fatal("ID mismatch (%u != %u)", id, expected_id); |
3a7fe5ba | 697 | |
698 | if (type == SSH2_FXP_STATUS) { | |
699 | u_int status = buffer_get_int(&msg); | |
700 | ||
701 | error("Couldn't readlink: %s", fx2txt(status)); | |
702 | return(NULL); | |
703 | } else if (type != SSH2_FXP_NAME) | |
9906a836 | 704 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", |
3a7fe5ba | 705 | SSH2_FXP_NAME, type); |
706 | ||
707 | count = buffer_get_int(&msg); | |
708 | if (count != 1) | |
709 | fatal("Got multiple names (%d) from SSH_FXP_READLINK", count); | |
710 | ||
711 | filename = buffer_get_string(&msg, NULL); | |
712 | longname = buffer_get_string(&msg, NULL); | |
713 | a = decode_attrib(&msg); | |
714 | ||
715 | debug3("SSH_FXP_READLINK %s -> %s", path, filename); | |
716 | ||
717 | xfree(longname); | |
718 | ||
719 | buffer_free(&msg); | |
720 | ||
721 | return(filename); | |
722 | } | |
723 | ||
c25d3df7 | 724 | static void |
725 | send_read_request(int fd_out, u_int id, u_int64_t offset, u_int len, | |
726 | char *handle, u_int handle_len) | |
727 | { | |
728 | Buffer msg; | |
762715ce | 729 | |
c25d3df7 | 730 | buffer_init(&msg); |
731 | buffer_clear(&msg); | |
732 | buffer_put_char(&msg, SSH2_FXP_READ); | |
733 | buffer_put_int(&msg, id); | |
734 | buffer_put_string(&msg, handle, handle_len); | |
735 | buffer_put_int64(&msg, offset); | |
736 | buffer_put_int(&msg, len); | |
737 | send_msg(fd_out, &msg); | |
738 | buffer_free(&msg); | |
762715ce | 739 | } |
c25d3df7 | 740 | |
61e96248 | 741 | int |
22e6c827 | 742 | do_download(struct sftp_conn *conn, char *remote_path, char *local_path, |
743 | int pflag) | |
61e96248 | 744 | { |
61e96248 | 745 | Attrib junk, *a; |
c25d3df7 | 746 | Buffer msg; |
747 | char *handle; | |
a056dfa2 | 748 | int local_fd, status = 0, write_error; |
c25d3df7 | 749 | int read_error, write_errno; |
750 | u_int64_t offset, size; | |
2ceb8101 | 751 | u_int handle_len, mode, type, id, buflen, num_req, max_req; |
b65c3807 | 752 | off_t progress_counter; |
c25d3df7 | 753 | struct request { |
754 | u_int id; | |
755 | u_int len; | |
756 | u_int64_t offset; | |
762715ce | 757 | TAILQ_ENTRY(request) tq; |
c25d3df7 | 758 | }; |
759 | TAILQ_HEAD(reqhead, request) requests; | |
760 | struct request *req; | |
761 | ||
762 | TAILQ_INIT(&requests); | |
61e96248 | 763 | |
22e6c827 | 764 | a = do_stat(conn, remote_path, 0); |
61e96248 | 765 | if (a == NULL) |
766 | return(-1); | |
767 | ||
768 | /* XXX: should we preserve set[ug]id? */ | |
769 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) | |
bfd934b9 | 770 | mode = a->perm & 0777; |
61e96248 | 771 | else |
772 | mode = 0666; | |
773 | ||
d50d9b63 | 774 | if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) && |
538840a2 | 775 | (!S_ISREG(a->perm))) { |
776 | error("Cannot download non-regular file: %s", remote_path); | |
d50d9b63 | 777 | return(-1); |
778 | } | |
779 | ||
c25d3df7 | 780 | if (a->flags & SSH2_FILEXFER_ATTR_SIZE) |
781 | size = a->size; | |
782 | else | |
783 | size = 0; | |
784 | ||
22e6c827 | 785 | buflen = conn->transfer_buflen; |
61e96248 | 786 | buffer_init(&msg); |
787 | ||
788 | /* Send open request */ | |
22e6c827 | 789 | id = conn->msg_id++; |
61e96248 | 790 | buffer_put_char(&msg, SSH2_FXP_OPEN); |
791 | buffer_put_int(&msg, id); | |
792 | buffer_put_cstring(&msg, remote_path); | |
793 | buffer_put_int(&msg, SSH2_FXF_READ); | |
794 | attrib_clear(&junk); /* Send empty attributes */ | |
795 | encode_attrib(&msg, &junk); | |
22e6c827 | 796 | send_msg(conn->fd_out, &msg); |
9906a836 | 797 | debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); |
61e96248 | 798 | |
22e6c827 | 799 | handle = get_handle(conn->fd_in, id, &handle_len); |
61e96248 | 800 | if (handle == NULL) { |
801 | buffer_free(&msg); | |
61e96248 | 802 | return(-1); |
803 | } | |
804 | ||
aff51935 | 805 | local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC, |
bfd934b9 | 806 | mode | S_IWRITE); |
22e6c827 | 807 | if (local_fd == -1) { |
808 | error("Couldn't open local file \"%s\" for writing: %s", | |
809 | local_path, strerror(errno)); | |
f60ace9f | 810 | buffer_free(&msg); |
811 | xfree(handle); | |
22e6c827 | 812 | return(-1); |
813 | } | |
814 | ||
61e96248 | 815 | /* Read from remote and write to local */ |
c25d3df7 | 816 | write_error = read_error = write_errno = num_req = offset = 0; |
817 | max_req = 1; | |
b65c3807 | 818 | progress_counter = 0; |
819 | ||
213bab61 | 820 | if (showprogress && size != 0) |
821 | start_progress_meter(remote_path, size, &progress_counter); | |
b65c3807 | 822 | |
c25d3df7 | 823 | while (num_req > 0 || max_req > 0) { |
61e96248 | 824 | char *data; |
c25d3df7 | 825 | u_int len; |
61e96248 | 826 | |
0e5de6f8 | 827 | /* |
f2107e97 | 828 | * Simulate EOF on interrupt: stop sending new requests and |
0e5de6f8 | 829 | * allow outstanding requests to drain gracefully |
830 | */ | |
831 | if (interrupted) { | |
832 | if (num_req == 0) /* If we haven't started yet... */ | |
833 | break; | |
834 | max_req = 0; | |
835 | } | |
836 | ||
c25d3df7 | 837 | /* Send some more requests */ |
838 | while (num_req < max_req) { | |
762715ce | 839 | debug3("Request range %llu -> %llu (%d/%d)", |
8627f3e0 | 840 | (unsigned long long)offset, |
841 | (unsigned long long)offset + buflen - 1, | |
842 | num_req, max_req); | |
c25d3df7 | 843 | req = xmalloc(sizeof(*req)); |
22e6c827 | 844 | req->id = conn->msg_id++; |
c25d3df7 | 845 | req->len = buflen; |
846 | req->offset = offset; | |
847 | offset += buflen; | |
848 | num_req++; | |
849 | TAILQ_INSERT_TAIL(&requests, req, tq); | |
762715ce | 850 | send_read_request(conn->fd_out, req->id, req->offset, |
c25d3df7 | 851 | req->len, handle, handle_len); |
852 | } | |
61e96248 | 853 | |
854 | buffer_clear(&msg); | |
22e6c827 | 855 | get_msg(conn->fd_in, &msg); |
61e96248 | 856 | type = buffer_get_char(&msg); |
857 | id = buffer_get_int(&msg); | |
9906a836 | 858 | debug3("Received reply T:%u I:%u R:%d", type, id, max_req); |
c25d3df7 | 859 | |
860 | /* Find the request in our queue */ | |
f8cc7664 | 861 | for (req = TAILQ_FIRST(&requests); |
c25d3df7 | 862 | req != NULL && req->id != id; |
863 | req = TAILQ_NEXT(req, tq)) | |
864 | ; | |
865 | if (req == NULL) | |
866 | fatal("Unexpected reply %u", id); | |
867 | ||
868 | switch (type) { | |
869 | case SSH2_FXP_STATUS: | |
0426a3b4 | 870 | status = buffer_get_int(&msg); |
c25d3df7 | 871 | if (status != SSH2_FX_EOF) |
872 | read_error = 1; | |
873 | max_req = 0; | |
874 | TAILQ_REMOVE(&requests, req, tq); | |
875 | xfree(req); | |
876 | num_req--; | |
877 | break; | |
878 | case SSH2_FXP_DATA: | |
879 | data = buffer_get_string(&msg, &len); | |
bfa7f960 | 880 | debug3("Received data %llu -> %llu", |
762715ce | 881 | (unsigned long long)req->offset, |
bfa7f960 | 882 | (unsigned long long)req->offset + len - 1); |
c25d3df7 | 883 | if (len > req->len) |
884 | fatal("Received more data than asked for " | |
b77a87e5 | 885 | "%u > %u", len, req->len); |
c25d3df7 | 886 | if ((lseek(local_fd, req->offset, SEEK_SET) == -1 || |
dc54438a | 887 | atomicio(vwrite, local_fd, data, len) != len) && |
c25d3df7 | 888 | !write_error) { |
889 | write_errno = errno; | |
890 | write_error = 1; | |
891 | max_req = 0; | |
892 | } | |
b65c3807 | 893 | progress_counter += len; |
c25d3df7 | 894 | xfree(data); |
61e96248 | 895 | |
c25d3df7 | 896 | if (len == req->len) { |
897 | TAILQ_REMOVE(&requests, req, tq); | |
898 | xfree(req); | |
899 | num_req--; | |
900 | } else { | |
901 | /* Resend the request for the missing data */ | |
902 | debug3("Short data block, re-requesting " | |
bfa7f960 | 903 | "%llu -> %llu (%2d)", |
762715ce | 904 | (unsigned long long)req->offset + len, |
5fc7dbc9 | 905 | (unsigned long long)req->offset + |
906 | req->len - 1, num_req); | |
22e6c827 | 907 | req->id = conn->msg_id++; |
c25d3df7 | 908 | req->len -= len; |
909 | req->offset += len; | |
762715ce | 910 | send_read_request(conn->fd_out, req->id, |
22e6c827 | 911 | req->offset, req->len, handle, handle_len); |
c25d3df7 | 912 | /* Reduce the request size */ |
913 | if (len < buflen) | |
914 | buflen = MAX(MIN_READ_SIZE, len); | |
915 | } | |
916 | if (max_req > 0) { /* max_req = 0 iff EOF received */ | |
917 | if (size > 0 && offset > size) { | |
918 | /* Only one request at a time | |
919 | * after the expected EOF */ | |
920 | debug3("Finish at %llu (%2d)", | |
bfa7f960 | 921 | (unsigned long long)offset, |
922 | num_req); | |
c25d3df7 | 923 | max_req = 1; |
0e5de6f8 | 924 | } else if (max_req <= conn->num_requests) { |
c25d3df7 | 925 | ++max_req; |
926 | } | |
61e96248 | 927 | } |
c25d3df7 | 928 | break; |
929 | default: | |
9906a836 | 930 | fatal("Expected SSH2_FXP_DATA(%u) packet, got %u", |
61e96248 | 931 | SSH2_FXP_DATA, type); |
932 | } | |
61e96248 | 933 | } |
61e96248 | 934 | |
b65c3807 | 935 | if (showprogress && size) |
936 | stop_progress_meter(); | |
937 | ||
c25d3df7 | 938 | /* Sanity check */ |
939 | if (TAILQ_FIRST(&requests) != NULL) | |
940 | fatal("Transfer complete, but requests still in queue"); | |
941 | ||
942 | if (read_error) { | |
762715ce | 943 | error("Couldn't read from remote file \"%s\" : %s", |
22e6c827 | 944 | remote_path, fx2txt(status)); |
945 | do_close(conn, handle, handle_len); | |
c25d3df7 | 946 | } else if (write_error) { |
22e6c827 | 947 | error("Couldn't write to \"%s\": %s", local_path, |
948 | strerror(write_errno)); | |
949 | status = -1; | |
950 | do_close(conn, handle, handle_len); | |
c25d3df7 | 951 | } else { |
22e6c827 | 952 | status = do_close(conn, handle, handle_len); |
c25d3df7 | 953 | |
954 | /* Override umask and utimes if asked */ | |
663fd560 | 955 | #ifdef HAVE_FCHMOD |
c25d3df7 | 956 | if (pflag && fchmod(local_fd, mode) == -1) |
aff51935 | 957 | #else |
c25d3df7 | 958 | if (pflag && chmod(local_path, mode) == -1) |
663fd560 | 959 | #endif /* HAVE_FCHMOD */ |
c25d3df7 | 960 | error("Couldn't set mode on \"%s\": %s", local_path, |
b77a87e5 | 961 | strerror(errno)); |
c25d3df7 | 962 | if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) { |
963 | struct timeval tv[2]; | |
964 | tv[0].tv_sec = a->atime; | |
965 | tv[1].tv_sec = a->mtime; | |
966 | tv[0].tv_usec = tv[1].tv_usec = 0; | |
967 | if (utimes(local_path, tv) == -1) | |
968 | error("Can't set times on \"%s\": %s", | |
b77a87e5 | 969 | local_path, strerror(errno)); |
c25d3df7 | 970 | } |
58c54a79 | 971 | } |
0426a3b4 | 972 | close(local_fd); |
973 | buffer_free(&msg); | |
974 | xfree(handle); | |
22e6c827 | 975 | |
976 | return(status); | |
61e96248 | 977 | } |
978 | ||
979 | int | |
22e6c827 | 980 | do_upload(struct sftp_conn *conn, char *local_path, char *remote_path, |
981 | int pflag) | |
61e96248 | 982 | { |
375f867e | 983 | int local_fd, status; |
b2bab059 | 984 | u_int handle_len, id, type; |
61e96248 | 985 | u_int64_t offset; |
375f867e | 986 | char *handle, *data; |
61e96248 | 987 | Buffer msg; |
988 | struct stat sb; | |
989 | Attrib a; | |
c25d3df7 | 990 | u_int32_t startid; |
991 | u_int32_t ackid; | |
b2bab059 | 992 | struct outstanding_ack { |
993 | u_int id; | |
994 | u_int len; | |
995 | u_int64_t offset; | |
762715ce | 996 | TAILQ_ENTRY(outstanding_ack) tq; |
b2bab059 | 997 | }; |
998 | TAILQ_HEAD(ackhead, outstanding_ack) acks; | |
6e007f08 | 999 | struct outstanding_ack *ack = NULL; |
b2bab059 | 1000 | |
1001 | TAILQ_INIT(&acks); | |
61e96248 | 1002 | |
1003 | if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) { | |
1004 | error("Couldn't open local file \"%s\" for reading: %s", | |
1005 | local_path, strerror(errno)); | |
1006 | return(-1); | |
1007 | } | |
1008 | if (fstat(local_fd, &sb) == -1) { | |
1009 | error("Couldn't fstat local file \"%s\": %s", | |
1010 | local_path, strerror(errno)); | |
1011 | close(local_fd); | |
1012 | return(-1); | |
1013 | } | |
538840a2 | 1014 | if (!S_ISREG(sb.st_mode)) { |
1015 | error("%s is not a regular file", local_path); | |
1016 | close(local_fd); | |
1017 | return(-1); | |
1018 | } | |
61e96248 | 1019 | stat_to_attrib(&sb, &a); |
1020 | ||
1021 | a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; | |
1022 | a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; | |
1023 | a.perm &= 0777; | |
1024 | if (!pflag) | |
1025 | a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; | |
1026 | ||
1027 | buffer_init(&msg); | |
1028 | ||
1029 | /* Send open request */ | |
22e6c827 | 1030 | id = conn->msg_id++; |
61e96248 | 1031 | buffer_put_char(&msg, SSH2_FXP_OPEN); |
1032 | buffer_put_int(&msg, id); | |
1033 | buffer_put_cstring(&msg, remote_path); | |
1034 | buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC); | |
1035 | encode_attrib(&msg, &a); | |
22e6c827 | 1036 | send_msg(conn->fd_out, &msg); |
9906a836 | 1037 | debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); |
61e96248 | 1038 | |
1039 | buffer_clear(&msg); | |
1040 | ||
22e6c827 | 1041 | handle = get_handle(conn->fd_in, id, &handle_len); |
61e96248 | 1042 | if (handle == NULL) { |
1043 | close(local_fd); | |
1044 | buffer_free(&msg); | |
1045 | return(-1); | |
1046 | } | |
1047 | ||
c25d3df7 | 1048 | startid = ackid = id + 1; |
22e6c827 | 1049 | data = xmalloc(conn->transfer_buflen); |
375f867e | 1050 | |
61e96248 | 1051 | /* Read from local and write to remote */ |
1052 | offset = 0; | |
b65c3807 | 1053 | if (showprogress) |
1054 | start_progress_meter(local_path, sb.st_size, &offset); | |
b65c3807 | 1055 | |
184eed6a | 1056 | for (;;) { |
61e96248 | 1057 | int len; |
61e96248 | 1058 | |
1059 | /* | |
f2107e97 | 1060 | * Can't use atomicio here because it returns 0 on EOF, |
0e5de6f8 | 1061 | * thus losing the last block of the file. |
f2107e97 | 1062 | * Simulate an EOF on interrupt, allowing ACKs from the |
0e5de6f8 | 1063 | * server to drain. |
61e96248 | 1064 | */ |
0e5de6f8 | 1065 | if (interrupted) |
1066 | len = 0; | |
1067 | else do | |
22e6c827 | 1068 | len = read(local_fd, data, conn->transfer_buflen); |
61e96248 | 1069 | while ((len == -1) && (errno == EINTR || errno == EAGAIN)); |
1070 | ||
1071 | if (len == -1) | |
1072 | fatal("Couldn't read from \"%s\": %s", local_path, | |
1073 | strerror(errno)); | |
c25d3df7 | 1074 | |
1075 | if (len != 0) { | |
b2bab059 | 1076 | ack = xmalloc(sizeof(*ack)); |
1077 | ack->id = ++id; | |
1078 | ack->offset = offset; | |
1079 | ack->len = len; | |
1080 | TAILQ_INSERT_TAIL(&acks, ack, tq); | |
1081 | ||
c25d3df7 | 1082 | buffer_clear(&msg); |
1083 | buffer_put_char(&msg, SSH2_FXP_WRITE); | |
b2bab059 | 1084 | buffer_put_int(&msg, ack->id); |
c25d3df7 | 1085 | buffer_put_string(&msg, handle, handle_len); |
1086 | buffer_put_int64(&msg, offset); | |
1087 | buffer_put_string(&msg, data, len); | |
22e6c827 | 1088 | send_msg(conn->fd_out, &msg); |
9906a836 | 1089 | debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u", |
b77a87e5 | 1090 | id, (unsigned long long)offset, len); |
b2bab059 | 1091 | } else if (TAILQ_FIRST(&acks) == NULL) |
61e96248 | 1092 | break; |
1093 | ||
b2bab059 | 1094 | if (ack == NULL) |
1095 | fatal("Unexpected ACK %u", id); | |
1096 | ||
762715ce | 1097 | if (id == startid || len == 0 || |
22e6c827 | 1098 | id - ackid >= conn->num_requests) { |
875ec275 | 1099 | u_int r_id; |
af2b3cd9 | 1100 | |
b2bab059 | 1101 | buffer_clear(&msg); |
22e6c827 | 1102 | get_msg(conn->fd_in, &msg); |
b2bab059 | 1103 | type = buffer_get_char(&msg); |
af2b3cd9 | 1104 | r_id = buffer_get_int(&msg); |
b2bab059 | 1105 | |
1106 | if (type != SSH2_FXP_STATUS) | |
1107 | fatal("Expected SSH2_FXP_STATUS(%d) packet, " | |
1108 | "got %d", SSH2_FXP_STATUS, type); | |
1109 | ||
1110 | status = buffer_get_int(&msg); | |
1111 | debug3("SSH2_FXP_STATUS %d", status); | |
1112 | ||
1113 | /* Find the request in our queue */ | |
f8cc7664 | 1114 | for (ack = TAILQ_FIRST(&acks); |
af2b3cd9 | 1115 | ack != NULL && ack->id != r_id; |
b2bab059 | 1116 | ack = TAILQ_NEXT(ack, tq)) |
1117 | ; | |
1118 | if (ack == NULL) | |
9906a836 | 1119 | fatal("Can't find request for ID %u", r_id); |
b2bab059 | 1120 | TAILQ_REMOVE(&acks, ack, tq); |
1121 | ||
c25d3df7 | 1122 | if (status != SSH2_FX_OK) { |
1123 | error("Couldn't write to remote file \"%s\": %s", | |
b77a87e5 | 1124 | remote_path, fx2txt(status)); |
22e6c827 | 1125 | do_close(conn, handle, handle_len); |
c25d3df7 | 1126 | close(local_fd); |
3e2f2431 | 1127 | xfree(data); |
1128 | xfree(ack); | |
c25d3df7 | 1129 | goto done; |
1130 | } | |
9906a836 | 1131 | debug3("In write loop, ack for %u %u bytes at %llu", |
4e2e5cfd | 1132 | ack->id, ack->len, (unsigned long long)ack->offset); |
c25d3df7 | 1133 | ++ackid; |
30e37ee6 | 1134 | xfree(ack); |
61e96248 | 1135 | } |
61e96248 | 1136 | offset += len; |
1137 | } | |
b65c3807 | 1138 | if (showprogress) |
1139 | stop_progress_meter(); | |
375f867e | 1140 | xfree(data); |
61e96248 | 1141 | |
1142 | if (close(local_fd) == -1) { | |
1143 | error("Couldn't close local file \"%s\": %s", local_path, | |
1144 | strerror(errno)); | |
22e6c827 | 1145 | do_close(conn, handle, handle_len); |
0426a3b4 | 1146 | status = -1; |
1147 | goto done; | |
61e96248 | 1148 | } |
1149 | ||
58c54a79 | 1150 | /* Override umask and utimes if asked */ |
1151 | if (pflag) | |
22e6c827 | 1152 | do_fsetstat(conn, handle, handle_len, &a); |
58c54a79 | 1153 | |
22e6c827 | 1154 | status = do_close(conn, handle, handle_len); |
0426a3b4 | 1155 | |
1156 | done: | |
1157 | xfree(handle); | |
1158 | buffer_free(&msg); | |
22e6c827 | 1159 | return(status); |
61e96248 | 1160 | } |