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1 | /* $OpenBSD: sftp-client.c,v 1.86 2008/06/26 06:10:09 djm Exp $ */ | |
2 | /* | |
3 | * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org> | |
4 | * | |
5 | * Permission to use, copy, modify, and distribute this software for any | |
6 | * purpose with or without fee is hereby granted, provided that the above | |
7 | * copyright notice and this permission notice appear in all copies. | |
8 | * | |
9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
16 | */ | |
17 | ||
18 | /* XXX: memleaks */ | |
19 | /* XXX: signed vs unsigned */ | |
20 | /* XXX: remove all logging, only return status codes */ | |
21 | /* XXX: copy between two remote sites */ | |
22 | ||
23 | #include "includes.h" | |
24 | ||
25 | #include <sys/types.h> | |
26 | #include <sys/param.h> | |
27 | #ifdef HAVE_SYS_STATVFS_H | |
28 | #include <sys/statvfs.h> | |
29 | #endif | |
30 | #include "openbsd-compat/sys-queue.h" | |
31 | #ifdef HAVE_SYS_STAT_H | |
32 | # include <sys/stat.h> | |
33 | #endif | |
34 | #ifdef HAVE_SYS_TIME_H | |
35 | # include <sys/time.h> | |
36 | #endif | |
37 | #include <sys/uio.h> | |
38 | ||
39 | #include <errno.h> | |
40 | #include <fcntl.h> | |
41 | #include <signal.h> | |
42 | #include <stdarg.h> | |
43 | #include <stdio.h> | |
44 | #include <string.h> | |
45 | #include <unistd.h> | |
46 | ||
47 | #include "xmalloc.h" | |
48 | #include "buffer.h" | |
49 | #include "log.h" | |
50 | #include "atomicio.h" | |
51 | #include "progressmeter.h" | |
52 | #include "misc.h" | |
53 | ||
54 | #include "sftp.h" | |
55 | #include "sftp-common.h" | |
56 | #include "sftp-client.h" | |
57 | ||
58 | extern volatile sig_atomic_t interrupted; | |
59 | extern int showprogress; | |
60 | ||
61 | /* Minimum amount of data to read at a time */ | |
62 | #define MIN_READ_SIZE 512 | |
63 | ||
64 | struct sftp_conn { | |
65 | int fd_in; | |
66 | int fd_out; | |
67 | u_int transfer_buflen; | |
68 | u_int num_requests; | |
69 | u_int version; | |
70 | u_int msg_id; | |
71 | #define SFTP_EXT_POSIX_RENAME 0x00000001 | |
72 | #define SFTP_EXT_STATVFS 0x00000002 | |
73 | #define SFTP_EXT_FSTATVFS 0x00000004 | |
74 | u_int exts; | |
75 | }; | |
76 | ||
77 | static void | |
78 | send_msg(int fd, Buffer *m) | |
79 | { | |
80 | u_char mlen[4]; | |
81 | struct iovec iov[2]; | |
82 | ||
83 | if (buffer_len(m) > SFTP_MAX_MSG_LENGTH) | |
84 | fatal("Outbound message too long %u", buffer_len(m)); | |
85 | ||
86 | /* Send length first */ | |
87 | put_u32(mlen, buffer_len(m)); | |
88 | iov[0].iov_base = mlen; | |
89 | iov[0].iov_len = sizeof(mlen); | |
90 | iov[1].iov_base = buffer_ptr(m); | |
91 | iov[1].iov_len = buffer_len(m); | |
92 | ||
93 | if (atomiciov(writev, fd, iov, 2) != buffer_len(m) + sizeof(mlen)) | |
94 | fatal("Couldn't send packet: %s", strerror(errno)); | |
95 | ||
96 | buffer_clear(m); | |
97 | } | |
98 | ||
99 | static void | |
100 | get_msg(int fd, Buffer *m) | |
101 | { | |
102 | u_int msg_len; | |
103 | ||
104 | buffer_append_space(m, 4); | |
105 | if (atomicio(read, fd, buffer_ptr(m), 4) != 4) { | |
106 | if (errno == EPIPE) | |
107 | fatal("Connection closed"); | |
108 | else | |
109 | fatal("Couldn't read packet: %s", strerror(errno)); | |
110 | } | |
111 | ||
112 | msg_len = buffer_get_int(m); | |
113 | if (msg_len > SFTP_MAX_MSG_LENGTH) | |
114 | fatal("Received message too long %u", msg_len); | |
115 | ||
116 | buffer_append_space(m, msg_len); | |
117 | if (atomicio(read, fd, buffer_ptr(m), msg_len) != msg_len) { | |
118 | if (errno == EPIPE) | |
119 | fatal("Connection closed"); | |
120 | else | |
121 | fatal("Read packet: %s", strerror(errno)); | |
122 | } | |
123 | } | |
124 | ||
125 | static void | |
126 | send_string_request(int fd, u_int id, u_int code, char *s, | |
127 | u_int len) | |
128 | { | |
129 | Buffer msg; | |
130 | ||
131 | buffer_init(&msg); | |
132 | buffer_put_char(&msg, code); | |
133 | buffer_put_int(&msg, id); | |
134 | buffer_put_string(&msg, s, len); | |
135 | send_msg(fd, &msg); | |
136 | debug3("Sent message fd %d T:%u I:%u", fd, code, id); | |
137 | buffer_free(&msg); | |
138 | } | |
139 | ||
140 | static void | |
141 | send_string_attrs_request(int fd, u_int id, u_int code, char *s, | |
142 | u_int len, Attrib *a) | |
143 | { | |
144 | Buffer msg; | |
145 | ||
146 | buffer_init(&msg); | |
147 | buffer_put_char(&msg, code); | |
148 | buffer_put_int(&msg, id); | |
149 | buffer_put_string(&msg, s, len); | |
150 | encode_attrib(&msg, a); | |
151 | send_msg(fd, &msg); | |
152 | debug3("Sent message fd %d T:%u I:%u", fd, code, id); | |
153 | buffer_free(&msg); | |
154 | } | |
155 | ||
156 | static u_int | |
157 | get_status(int fd, u_int expected_id) | |
158 | { | |
159 | Buffer msg; | |
160 | u_int type, id, status; | |
161 | ||
162 | buffer_init(&msg); | |
163 | get_msg(fd, &msg); | |
164 | type = buffer_get_char(&msg); | |
165 | id = buffer_get_int(&msg); | |
166 | ||
167 | if (id != expected_id) | |
168 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
169 | if (type != SSH2_FXP_STATUS) | |
170 | fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u", | |
171 | SSH2_FXP_STATUS, type); | |
172 | ||
173 | status = buffer_get_int(&msg); | |
174 | buffer_free(&msg); | |
175 | ||
176 | debug3("SSH2_FXP_STATUS %u", status); | |
177 | ||
178 | return(status); | |
179 | } | |
180 | ||
181 | static char * | |
182 | get_handle(int fd, u_int expected_id, u_int *len) | |
183 | { | |
184 | Buffer msg; | |
185 | u_int type, id; | |
186 | char *handle; | |
187 | ||
188 | buffer_init(&msg); | |
189 | get_msg(fd, &msg); | |
190 | type = buffer_get_char(&msg); | |
191 | id = buffer_get_int(&msg); | |
192 | ||
193 | if (id != expected_id) | |
194 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
195 | if (type == SSH2_FXP_STATUS) { | |
196 | int status = buffer_get_int(&msg); | |
197 | ||
198 | error("Couldn't get handle: %s", fx2txt(status)); | |
199 | buffer_free(&msg); | |
200 | return(NULL); | |
201 | } else if (type != SSH2_FXP_HANDLE) | |
202 | fatal("Expected SSH2_FXP_HANDLE(%u) packet, got %u", | |
203 | SSH2_FXP_HANDLE, type); | |
204 | ||
205 | handle = buffer_get_string(&msg, len); | |
206 | buffer_free(&msg); | |
207 | ||
208 | return(handle); | |
209 | } | |
210 | ||
211 | static Attrib * | |
212 | get_decode_stat(int fd, u_int expected_id, int quiet) | |
213 | { | |
214 | Buffer msg; | |
215 | u_int type, id; | |
216 | Attrib *a; | |
217 | ||
218 | buffer_init(&msg); | |
219 | get_msg(fd, &msg); | |
220 | ||
221 | type = buffer_get_char(&msg); | |
222 | id = buffer_get_int(&msg); | |
223 | ||
224 | debug3("Received stat reply T:%u I:%u", type, id); | |
225 | if (id != expected_id) | |
226 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
227 | if (type == SSH2_FXP_STATUS) { | |
228 | int status = buffer_get_int(&msg); | |
229 | ||
230 | if (quiet) | |
231 | debug("Couldn't stat remote file: %s", fx2txt(status)); | |
232 | else | |
233 | error("Couldn't stat remote file: %s", fx2txt(status)); | |
234 | buffer_free(&msg); | |
235 | return(NULL); | |
236 | } else if (type != SSH2_FXP_ATTRS) { | |
237 | fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u", | |
238 | SSH2_FXP_ATTRS, type); | |
239 | } | |
240 | a = decode_attrib(&msg); | |
241 | buffer_free(&msg); | |
242 | ||
243 | return(a); | |
244 | } | |
245 | ||
246 | static int | |
247 | get_decode_statvfs(int fd, struct sftp_statvfs *st, u_int expected_id, | |
248 | int quiet) | |
249 | { | |
250 | Buffer msg; | |
251 | u_int type, id, flag; | |
252 | ||
253 | buffer_init(&msg); | |
254 | get_msg(fd, &msg); | |
255 | ||
256 | type = buffer_get_char(&msg); | |
257 | id = buffer_get_int(&msg); | |
258 | ||
259 | debug3("Received statvfs reply T:%u I:%u", type, id); | |
260 | if (id != expected_id) | |
261 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
262 | if (type == SSH2_FXP_STATUS) { | |
263 | int status = buffer_get_int(&msg); | |
264 | ||
265 | if (quiet) | |
266 | debug("Couldn't statvfs: %s", fx2txt(status)); | |
267 | else | |
268 | error("Couldn't statvfs: %s", fx2txt(status)); | |
269 | buffer_free(&msg); | |
270 | return -1; | |
271 | } else if (type != SSH2_FXP_EXTENDED_REPLY) { | |
272 | fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u", | |
273 | SSH2_FXP_EXTENDED_REPLY, type); | |
274 | } | |
275 | ||
276 | bzero(st, sizeof(*st)); | |
277 | st->f_bsize = buffer_get_int64(&msg); | |
278 | st->f_frsize = buffer_get_int64(&msg); | |
279 | st->f_blocks = buffer_get_int64(&msg); | |
280 | st->f_bfree = buffer_get_int64(&msg); | |
281 | st->f_bavail = buffer_get_int64(&msg); | |
282 | st->f_files = buffer_get_int64(&msg); | |
283 | st->f_ffree = buffer_get_int64(&msg); | |
284 | st->f_favail = buffer_get_int64(&msg); | |
285 | st->f_fsid = buffer_get_int64(&msg); | |
286 | flag = buffer_get_int64(&msg); | |
287 | st->f_namemax = buffer_get_int64(&msg); | |
288 | ||
289 | st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0; | |
290 | st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0; | |
291 | ||
292 | buffer_free(&msg); | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | struct sftp_conn * | |
298 | do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests) | |
299 | { | |
300 | u_int type, exts = 0; | |
301 | int version; | |
302 | Buffer msg; | |
303 | struct sftp_conn *ret; | |
304 | ||
305 | buffer_init(&msg); | |
306 | buffer_put_char(&msg, SSH2_FXP_INIT); | |
307 | buffer_put_int(&msg, SSH2_FILEXFER_VERSION); | |
308 | send_msg(fd_out, &msg); | |
309 | ||
310 | buffer_clear(&msg); | |
311 | ||
312 | get_msg(fd_in, &msg); | |
313 | ||
314 | /* Expecting a VERSION reply */ | |
315 | if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) { | |
316 | error("Invalid packet back from SSH2_FXP_INIT (type %u)", | |
317 | type); | |
318 | buffer_free(&msg); | |
319 | return(NULL); | |
320 | } | |
321 | version = buffer_get_int(&msg); | |
322 | ||
323 | debug2("Remote version: %d", version); | |
324 | ||
325 | /* Check for extensions */ | |
326 | while (buffer_len(&msg) > 0) { | |
327 | char *name = buffer_get_string(&msg, NULL); | |
328 | char *value = buffer_get_string(&msg, NULL); | |
329 | int known = 0; | |
330 | ||
331 | if (strcmp(name, "posix-rename@openssh.com") == 0 && | |
332 | strcmp(value, "1") == 0) { | |
333 | exts |= SFTP_EXT_POSIX_RENAME; | |
334 | known = 1; | |
335 | } else if (strcmp(name, "statvfs@openssh.com") == 0 && | |
336 | strcmp(value, "2") == 0) { | |
337 | exts |= SFTP_EXT_STATVFS; | |
338 | known = 1; | |
339 | } if (strcmp(name, "fstatvfs@openssh.com") == 0 && | |
340 | strcmp(value, "2") == 0) { | |
341 | exts |= SFTP_EXT_FSTATVFS; | |
342 | known = 1; | |
343 | } | |
344 | if (known) { | |
345 | debug2("Server supports extension \"%s\" revision %s", | |
346 | name, value); | |
347 | } else { | |
348 | debug2("Unrecognised server extension \"%s\"", name); | |
349 | } | |
350 | xfree(name); | |
351 | xfree(value); | |
352 | } | |
353 | ||
354 | buffer_free(&msg); | |
355 | ||
356 | ret = xmalloc(sizeof(*ret)); | |
357 | ret->fd_in = fd_in; | |
358 | ret->fd_out = fd_out; | |
359 | ret->transfer_buflen = transfer_buflen; | |
360 | ret->num_requests = num_requests; | |
361 | ret->version = version; | |
362 | ret->msg_id = 1; | |
363 | ret->exts = exts; | |
364 | ||
365 | /* Some filexfer v.0 servers don't support large packets */ | |
366 | if (version == 0) | |
367 | ret->transfer_buflen = MIN(ret->transfer_buflen, 20480); | |
368 | ||
369 | return(ret); | |
370 | } | |
371 | ||
372 | u_int | |
373 | sftp_proto_version(struct sftp_conn *conn) | |
374 | { | |
375 | return(conn->version); | |
376 | } | |
377 | ||
378 | int | |
379 | do_close(struct sftp_conn *conn, char *handle, u_int handle_len) | |
380 | { | |
381 | u_int id, status; | |
382 | Buffer msg; | |
383 | ||
384 | buffer_init(&msg); | |
385 | ||
386 | id = conn->msg_id++; | |
387 | buffer_put_char(&msg, SSH2_FXP_CLOSE); | |
388 | buffer_put_int(&msg, id); | |
389 | buffer_put_string(&msg, handle, handle_len); | |
390 | send_msg(conn->fd_out, &msg); | |
391 | debug3("Sent message SSH2_FXP_CLOSE I:%u", id); | |
392 | ||
393 | status = get_status(conn->fd_in, id); | |
394 | if (status != SSH2_FX_OK) | |
395 | error("Couldn't close file: %s", fx2txt(status)); | |
396 | ||
397 | buffer_free(&msg); | |
398 | ||
399 | return(status); | |
400 | } | |
401 | ||
402 | ||
403 | static int | |
404 | do_lsreaddir(struct sftp_conn *conn, char *path, int printflag, | |
405 | SFTP_DIRENT ***dir) | |
406 | { | |
407 | Buffer msg; | |
408 | u_int count, type, id, handle_len, i, expected_id, ents = 0; | |
409 | char *handle; | |
410 | ||
411 | id = conn->msg_id++; | |
412 | ||
413 | buffer_init(&msg); | |
414 | buffer_put_char(&msg, SSH2_FXP_OPENDIR); | |
415 | buffer_put_int(&msg, id); | |
416 | buffer_put_cstring(&msg, path); | |
417 | send_msg(conn->fd_out, &msg); | |
418 | ||
419 | buffer_clear(&msg); | |
420 | ||
421 | handle = get_handle(conn->fd_in, id, &handle_len); | |
422 | if (handle == NULL) | |
423 | return(-1); | |
424 | ||
425 | if (dir) { | |
426 | ents = 0; | |
427 | *dir = xmalloc(sizeof(**dir)); | |
428 | (*dir)[0] = NULL; | |
429 | } | |
430 | ||
431 | for (; !interrupted;) { | |
432 | id = expected_id = conn->msg_id++; | |
433 | ||
434 | debug3("Sending SSH2_FXP_READDIR I:%u", id); | |
435 | ||
436 | buffer_clear(&msg); | |
437 | buffer_put_char(&msg, SSH2_FXP_READDIR); | |
438 | buffer_put_int(&msg, id); | |
439 | buffer_put_string(&msg, handle, handle_len); | |
440 | send_msg(conn->fd_out, &msg); | |
441 | ||
442 | buffer_clear(&msg); | |
443 | ||
444 | get_msg(conn->fd_in, &msg); | |
445 | ||
446 | type = buffer_get_char(&msg); | |
447 | id = buffer_get_int(&msg); | |
448 | ||
449 | debug3("Received reply T:%u I:%u", type, id); | |
450 | ||
451 | if (id != expected_id) | |
452 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
453 | ||
454 | if (type == SSH2_FXP_STATUS) { | |
455 | int status = buffer_get_int(&msg); | |
456 | ||
457 | debug3("Received SSH2_FXP_STATUS %d", status); | |
458 | ||
459 | if (status == SSH2_FX_EOF) { | |
460 | break; | |
461 | } else { | |
462 | error("Couldn't read directory: %s", | |
463 | fx2txt(status)); | |
464 | do_close(conn, handle, handle_len); | |
465 | xfree(handle); | |
466 | return(status); | |
467 | } | |
468 | } else if (type != SSH2_FXP_NAME) | |
469 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", | |
470 | SSH2_FXP_NAME, type); | |
471 | ||
472 | count = buffer_get_int(&msg); | |
473 | if (count == 0) | |
474 | break; | |
475 | debug3("Received %d SSH2_FXP_NAME responses", count); | |
476 | for (i = 0; i < count; i++) { | |
477 | char *filename, *longname; | |
478 | Attrib *a; | |
479 | ||
480 | filename = buffer_get_string(&msg, NULL); | |
481 | longname = buffer_get_string(&msg, NULL); | |
482 | a = decode_attrib(&msg); | |
483 | ||
484 | if (printflag) | |
485 | printf("%s\n", longname); | |
486 | ||
487 | if (dir) { | |
488 | *dir = xrealloc(*dir, ents + 2, sizeof(**dir)); | |
489 | (*dir)[ents] = xmalloc(sizeof(***dir)); | |
490 | (*dir)[ents]->filename = xstrdup(filename); | |
491 | (*dir)[ents]->longname = xstrdup(longname); | |
492 | memcpy(&(*dir)[ents]->a, a, sizeof(*a)); | |
493 | (*dir)[++ents] = NULL; | |
494 | } | |
495 | ||
496 | xfree(filename); | |
497 | xfree(longname); | |
498 | } | |
499 | } | |
500 | ||
501 | buffer_free(&msg); | |
502 | do_close(conn, handle, handle_len); | |
503 | xfree(handle); | |
504 | ||
505 | /* Don't return partial matches on interrupt */ | |
506 | if (interrupted && dir != NULL && *dir != NULL) { | |
507 | free_sftp_dirents(*dir); | |
508 | *dir = xmalloc(sizeof(**dir)); | |
509 | **dir = NULL; | |
510 | } | |
511 | ||
512 | return(0); | |
513 | } | |
514 | ||
515 | int | |
516 | do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir) | |
517 | { | |
518 | return(do_lsreaddir(conn, path, 0, dir)); | |
519 | } | |
520 | ||
521 | void free_sftp_dirents(SFTP_DIRENT **s) | |
522 | { | |
523 | int i; | |
524 | ||
525 | for (i = 0; s[i]; i++) { | |
526 | xfree(s[i]->filename); | |
527 | xfree(s[i]->longname); | |
528 | xfree(s[i]); | |
529 | } | |
530 | xfree(s); | |
531 | } | |
532 | ||
533 | int | |
534 | do_rm(struct sftp_conn *conn, char *path) | |
535 | { | |
536 | u_int status, id; | |
537 | ||
538 | debug2("Sending SSH2_FXP_REMOVE \"%s\"", path); | |
539 | ||
540 | id = conn->msg_id++; | |
541 | send_string_request(conn->fd_out, id, SSH2_FXP_REMOVE, path, | |
542 | strlen(path)); | |
543 | status = get_status(conn->fd_in, id); | |
544 | if (status != SSH2_FX_OK) | |
545 | error("Couldn't delete file: %s", fx2txt(status)); | |
546 | return(status); | |
547 | } | |
548 | ||
549 | int | |
550 | do_mkdir(struct sftp_conn *conn, char *path, Attrib *a) | |
551 | { | |
552 | u_int status, id; | |
553 | ||
554 | id = conn->msg_id++; | |
555 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_MKDIR, path, | |
556 | strlen(path), a); | |
557 | ||
558 | status = get_status(conn->fd_in, id); | |
559 | if (status != SSH2_FX_OK) | |
560 | error("Couldn't create directory: %s", fx2txt(status)); | |
561 | ||
562 | return(status); | |
563 | } | |
564 | ||
565 | int | |
566 | do_rmdir(struct sftp_conn *conn, char *path) | |
567 | { | |
568 | u_int status, id; | |
569 | ||
570 | id = conn->msg_id++; | |
571 | send_string_request(conn->fd_out, id, SSH2_FXP_RMDIR, path, | |
572 | strlen(path)); | |
573 | ||
574 | status = get_status(conn->fd_in, id); | |
575 | if (status != SSH2_FX_OK) | |
576 | error("Couldn't remove directory: %s", fx2txt(status)); | |
577 | ||
578 | return(status); | |
579 | } | |
580 | ||
581 | Attrib * | |
582 | do_stat(struct sftp_conn *conn, char *path, int quiet) | |
583 | { | |
584 | u_int id; | |
585 | ||
586 | id = conn->msg_id++; | |
587 | ||
588 | send_string_request(conn->fd_out, id, | |
589 | conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT, | |
590 | path, strlen(path)); | |
591 | ||
592 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
593 | } | |
594 | ||
595 | Attrib * | |
596 | do_lstat(struct sftp_conn *conn, char *path, int quiet) | |
597 | { | |
598 | u_int id; | |
599 | ||
600 | if (conn->version == 0) { | |
601 | if (quiet) | |
602 | debug("Server version does not support lstat operation"); | |
603 | else | |
604 | logit("Server version does not support lstat operation"); | |
605 | return(do_stat(conn, path, quiet)); | |
606 | } | |
607 | ||
608 | id = conn->msg_id++; | |
609 | send_string_request(conn->fd_out, id, SSH2_FXP_LSTAT, path, | |
610 | strlen(path)); | |
611 | ||
612 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
613 | } | |
614 | ||
615 | #ifdef notyet | |
616 | Attrib * | |
617 | do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet) | |
618 | { | |
619 | u_int id; | |
620 | ||
621 | id = conn->msg_id++; | |
622 | send_string_request(conn->fd_out, id, SSH2_FXP_FSTAT, handle, | |
623 | handle_len); | |
624 | ||
625 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
626 | } | |
627 | #endif | |
628 | ||
629 | int | |
630 | do_setstat(struct sftp_conn *conn, char *path, Attrib *a) | |
631 | { | |
632 | u_int status, id; | |
633 | ||
634 | id = conn->msg_id++; | |
635 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_SETSTAT, path, | |
636 | strlen(path), a); | |
637 | ||
638 | status = get_status(conn->fd_in, id); | |
639 | if (status != SSH2_FX_OK) | |
640 | error("Couldn't setstat on \"%s\": %s", path, | |
641 | fx2txt(status)); | |
642 | ||
643 | return(status); | |
644 | } | |
645 | ||
646 | int | |
647 | do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len, | |
648 | Attrib *a) | |
649 | { | |
650 | u_int status, id; | |
651 | ||
652 | id = conn->msg_id++; | |
653 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_FSETSTAT, handle, | |
654 | handle_len, a); | |
655 | ||
656 | status = get_status(conn->fd_in, id); | |
657 | if (status != SSH2_FX_OK) | |
658 | error("Couldn't fsetstat: %s", fx2txt(status)); | |
659 | ||
660 | return(status); | |
661 | } | |
662 | ||
663 | char * | |
664 | do_realpath(struct sftp_conn *conn, char *path) | |
665 | { | |
666 | Buffer msg; | |
667 | u_int type, expected_id, count, id; | |
668 | char *filename, *longname; | |
669 | Attrib *a; | |
670 | ||
671 | expected_id = id = conn->msg_id++; | |
672 | send_string_request(conn->fd_out, id, SSH2_FXP_REALPATH, path, | |
673 | strlen(path)); | |
674 | ||
675 | buffer_init(&msg); | |
676 | ||
677 | get_msg(conn->fd_in, &msg); | |
678 | type = buffer_get_char(&msg); | |
679 | id = buffer_get_int(&msg); | |
680 | ||
681 | if (id != expected_id) | |
682 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
683 | ||
684 | if (type == SSH2_FXP_STATUS) { | |
685 | u_int status = buffer_get_int(&msg); | |
686 | ||
687 | error("Couldn't canonicalise: %s", fx2txt(status)); | |
688 | return(NULL); | |
689 | } else if (type != SSH2_FXP_NAME) | |
690 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", | |
691 | SSH2_FXP_NAME, type); | |
692 | ||
693 | count = buffer_get_int(&msg); | |
694 | if (count != 1) | |
695 | fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count); | |
696 | ||
697 | filename = buffer_get_string(&msg, NULL); | |
698 | longname = buffer_get_string(&msg, NULL); | |
699 | a = decode_attrib(&msg); | |
700 | ||
701 | debug3("SSH_FXP_REALPATH %s -> %s", path, filename); | |
702 | ||
703 | xfree(longname); | |
704 | ||
705 | buffer_free(&msg); | |
706 | ||
707 | return(filename); | |
708 | } | |
709 | ||
710 | int | |
711 | do_rename(struct sftp_conn *conn, char *oldpath, char *newpath) | |
712 | { | |
713 | Buffer msg; | |
714 | u_int status, id; | |
715 | ||
716 | buffer_init(&msg); | |
717 | ||
718 | /* Send rename request */ | |
719 | id = conn->msg_id++; | |
720 | if ((conn->exts & SFTP_EXT_POSIX_RENAME)) { | |
721 | buffer_put_char(&msg, SSH2_FXP_EXTENDED); | |
722 | buffer_put_int(&msg, id); | |
723 | buffer_put_cstring(&msg, "posix-rename@openssh.com"); | |
724 | } else { | |
725 | buffer_put_char(&msg, SSH2_FXP_RENAME); | |
726 | buffer_put_int(&msg, id); | |
727 | } | |
728 | buffer_put_cstring(&msg, oldpath); | |
729 | buffer_put_cstring(&msg, newpath); | |
730 | send_msg(conn->fd_out, &msg); | |
731 | debug3("Sent message %s \"%s\" -> \"%s\"", | |
732 | (conn->exts & SFTP_EXT_POSIX_RENAME) ? "posix-rename@openssh.com" : | |
733 | "SSH2_FXP_RENAME", oldpath, newpath); | |
734 | buffer_free(&msg); | |
735 | ||
736 | status = get_status(conn->fd_in, id); | |
737 | if (status != SSH2_FX_OK) | |
738 | error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, | |
739 | newpath, fx2txt(status)); | |
740 | ||
741 | return(status); | |
742 | } | |
743 | ||
744 | int | |
745 | do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath) | |
746 | { | |
747 | Buffer msg; | |
748 | u_int status, id; | |
749 | ||
750 | if (conn->version < 3) { | |
751 | error("This server does not support the symlink operation"); | |
752 | return(SSH2_FX_OP_UNSUPPORTED); | |
753 | } | |
754 | ||
755 | buffer_init(&msg); | |
756 | ||
757 | /* Send symlink request */ | |
758 | id = conn->msg_id++; | |
759 | buffer_put_char(&msg, SSH2_FXP_SYMLINK); | |
760 | buffer_put_int(&msg, id); | |
761 | buffer_put_cstring(&msg, oldpath); | |
762 | buffer_put_cstring(&msg, newpath); | |
763 | send_msg(conn->fd_out, &msg); | |
764 | debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath, | |
765 | newpath); | |
766 | buffer_free(&msg); | |
767 | ||
768 | status = get_status(conn->fd_in, id); | |
769 | if (status != SSH2_FX_OK) | |
770 | error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath, | |
771 | newpath, fx2txt(status)); | |
772 | ||
773 | return(status); | |
774 | } | |
775 | ||
776 | #ifdef notyet | |
777 | char * | |
778 | do_readlink(struct sftp_conn *conn, char *path) | |
779 | { | |
780 | Buffer msg; | |
781 | u_int type, expected_id, count, id; | |
782 | char *filename, *longname; | |
783 | Attrib *a; | |
784 | ||
785 | expected_id = id = conn->msg_id++; | |
786 | send_string_request(conn->fd_out, id, SSH2_FXP_READLINK, path, | |
787 | strlen(path)); | |
788 | ||
789 | buffer_init(&msg); | |
790 | ||
791 | get_msg(conn->fd_in, &msg); | |
792 | type = buffer_get_char(&msg); | |
793 | id = buffer_get_int(&msg); | |
794 | ||
795 | if (id != expected_id) | |
796 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
797 | ||
798 | if (type == SSH2_FXP_STATUS) { | |
799 | u_int status = buffer_get_int(&msg); | |
800 | ||
801 | error("Couldn't readlink: %s", fx2txt(status)); | |
802 | return(NULL); | |
803 | } else if (type != SSH2_FXP_NAME) | |
804 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", | |
805 | SSH2_FXP_NAME, type); | |
806 | ||
807 | count = buffer_get_int(&msg); | |
808 | if (count != 1) | |
809 | fatal("Got multiple names (%d) from SSH_FXP_READLINK", count); | |
810 | ||
811 | filename = buffer_get_string(&msg, NULL); | |
812 | longname = buffer_get_string(&msg, NULL); | |
813 | a = decode_attrib(&msg); | |
814 | ||
815 | debug3("SSH_FXP_READLINK %s -> %s", path, filename); | |
816 | ||
817 | xfree(longname); | |
818 | ||
819 | buffer_free(&msg); | |
820 | ||
821 | return(filename); | |
822 | } | |
823 | #endif | |
824 | ||
825 | int | |
826 | do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st, | |
827 | int quiet) | |
828 | { | |
829 | Buffer msg; | |
830 | u_int id; | |
831 | ||
832 | if ((conn->exts & SFTP_EXT_STATVFS) == 0) { | |
833 | error("Server does not support statvfs@openssh.com extension"); | |
834 | return -1; | |
835 | } | |
836 | ||
837 | id = conn->msg_id++; | |
838 | ||
839 | buffer_init(&msg); | |
840 | buffer_clear(&msg); | |
841 | buffer_put_char(&msg, SSH2_FXP_EXTENDED); | |
842 | buffer_put_int(&msg, id); | |
843 | buffer_put_cstring(&msg, "statvfs@openssh.com"); | |
844 | buffer_put_cstring(&msg, path); | |
845 | send_msg(conn->fd_out, &msg); | |
846 | buffer_free(&msg); | |
847 | ||
848 | return get_decode_statvfs(conn->fd_in, st, id, quiet); | |
849 | } | |
850 | ||
851 | #ifdef notyet | |
852 | int | |
853 | do_fstatvfs(struct sftp_conn *conn, const char *handle, u_int handle_len, | |
854 | struct sftp_statvfs *st, int quiet) | |
855 | { | |
856 | Buffer msg; | |
857 | u_int id; | |
858 | ||
859 | if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) { | |
860 | error("Server does not support fstatvfs@openssh.com extension"); | |
861 | return -1; | |
862 | } | |
863 | ||
864 | id = conn->msg_id++; | |
865 | ||
866 | buffer_init(&msg); | |
867 | buffer_clear(&msg); | |
868 | buffer_put_char(&msg, SSH2_FXP_EXTENDED); | |
869 | buffer_put_int(&msg, id); | |
870 | buffer_put_cstring(&msg, "fstatvfs@openssh.com"); | |
871 | buffer_put_string(&msg, handle, handle_len); | |
872 | send_msg(conn->fd_out, &msg); | |
873 | buffer_free(&msg); | |
874 | ||
875 | return get_decode_statvfs(conn->fd_in, st, id, quiet); | |
876 | } | |
877 | #endif | |
878 | ||
879 | static void | |
880 | send_read_request(int fd_out, u_int id, u_int64_t offset, u_int len, | |
881 | char *handle, u_int handle_len) | |
882 | { | |
883 | Buffer msg; | |
884 | ||
885 | buffer_init(&msg); | |
886 | buffer_clear(&msg); | |
887 | buffer_put_char(&msg, SSH2_FXP_READ); | |
888 | buffer_put_int(&msg, id); | |
889 | buffer_put_string(&msg, handle, handle_len); | |
890 | buffer_put_int64(&msg, offset); | |
891 | buffer_put_int(&msg, len); | |
892 | send_msg(fd_out, &msg); | |
893 | buffer_free(&msg); | |
894 | } | |
895 | ||
896 | int | |
897 | do_download(struct sftp_conn *conn, char *remote_path, char *local_path, | |
898 | int pflag) | |
899 | { | |
900 | Attrib junk, *a; | |
901 | Buffer msg; | |
902 | char *handle; | |
903 | int local_fd, status = 0, write_error; | |
904 | int read_error, write_errno; | |
905 | u_int64_t offset, size; | |
906 | u_int handle_len, mode, type, id, buflen, num_req, max_req; | |
907 | off_t progress_counter; | |
908 | struct request { | |
909 | u_int id; | |
910 | u_int len; | |
911 | u_int64_t offset; | |
912 | TAILQ_ENTRY(request) tq; | |
913 | }; | |
914 | TAILQ_HEAD(reqhead, request) requests; | |
915 | struct request *req; | |
916 | ||
917 | TAILQ_INIT(&requests); | |
918 | ||
919 | a = do_stat(conn, remote_path, 0); | |
920 | if (a == NULL) | |
921 | return(-1); | |
922 | ||
923 | /* Do not preserve set[ug]id here, as we do not preserve ownership */ | |
924 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) | |
925 | mode = a->perm & 0777; | |
926 | else | |
927 | mode = 0666; | |
928 | ||
929 | if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) && | |
930 | (!S_ISREG(a->perm))) { | |
931 | error("Cannot download non-regular file: %s", remote_path); | |
932 | return(-1); | |
933 | } | |
934 | ||
935 | if (a->flags & SSH2_FILEXFER_ATTR_SIZE) | |
936 | size = a->size; | |
937 | else | |
938 | size = 0; | |
939 | ||
940 | buflen = conn->transfer_buflen; | |
941 | buffer_init(&msg); | |
942 | ||
943 | /* Send open request */ | |
944 | id = conn->msg_id++; | |
945 | buffer_put_char(&msg, SSH2_FXP_OPEN); | |
946 | buffer_put_int(&msg, id); | |
947 | buffer_put_cstring(&msg, remote_path); | |
948 | buffer_put_int(&msg, SSH2_FXF_READ); | |
949 | attrib_clear(&junk); /* Send empty attributes */ | |
950 | encode_attrib(&msg, &junk); | |
951 | send_msg(conn->fd_out, &msg); | |
952 | debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); | |
953 | ||
954 | handle = get_handle(conn->fd_in, id, &handle_len); | |
955 | if (handle == NULL) { | |
956 | buffer_free(&msg); | |
957 | return(-1); | |
958 | } | |
959 | ||
960 | local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC, | |
961 | mode | S_IWRITE); | |
962 | if (local_fd == -1) { | |
963 | error("Couldn't open local file \"%s\" for writing: %s", | |
964 | local_path, strerror(errno)); | |
965 | do_close(conn, handle, handle_len); | |
966 | buffer_free(&msg); | |
967 | xfree(handle); | |
968 | return(-1); | |
969 | } | |
970 | ||
971 | /* Read from remote and write to local */ | |
972 | write_error = read_error = write_errno = num_req = offset = 0; | |
973 | max_req = 1; | |
974 | progress_counter = 0; | |
975 | ||
976 | if (showprogress && size != 0) | |
977 | start_progress_meter(remote_path, size, &progress_counter); | |
978 | ||
979 | while (num_req > 0 || max_req > 0) { | |
980 | char *data; | |
981 | u_int len; | |
982 | ||
983 | /* | |
984 | * Simulate EOF on interrupt: stop sending new requests and | |
985 | * allow outstanding requests to drain gracefully | |
986 | */ | |
987 | if (interrupted) { | |
988 | if (num_req == 0) /* If we haven't started yet... */ | |
989 | break; | |
990 | max_req = 0; | |
991 | } | |
992 | ||
993 | /* Send some more requests */ | |
994 | while (num_req < max_req) { | |
995 | debug3("Request range %llu -> %llu (%d/%d)", | |
996 | (unsigned long long)offset, | |
997 | (unsigned long long)offset + buflen - 1, | |
998 | num_req, max_req); | |
999 | req = xmalloc(sizeof(*req)); | |
1000 | req->id = conn->msg_id++; | |
1001 | req->len = buflen; | |
1002 | req->offset = offset; | |
1003 | offset += buflen; | |
1004 | num_req++; | |
1005 | TAILQ_INSERT_TAIL(&requests, req, tq); | |
1006 | send_read_request(conn->fd_out, req->id, req->offset, | |
1007 | req->len, handle, handle_len); | |
1008 | } | |
1009 | ||
1010 | buffer_clear(&msg); | |
1011 | get_msg(conn->fd_in, &msg); | |
1012 | type = buffer_get_char(&msg); | |
1013 | id = buffer_get_int(&msg); | |
1014 | debug3("Received reply T:%u I:%u R:%d", type, id, max_req); | |
1015 | ||
1016 | /* Find the request in our queue */ | |
1017 | for (req = TAILQ_FIRST(&requests); | |
1018 | req != NULL && req->id != id; | |
1019 | req = TAILQ_NEXT(req, tq)) | |
1020 | ; | |
1021 | if (req == NULL) | |
1022 | fatal("Unexpected reply %u", id); | |
1023 | ||
1024 | switch (type) { | |
1025 | case SSH2_FXP_STATUS: | |
1026 | status = buffer_get_int(&msg); | |
1027 | if (status != SSH2_FX_EOF) | |
1028 | read_error = 1; | |
1029 | max_req = 0; | |
1030 | TAILQ_REMOVE(&requests, req, tq); | |
1031 | xfree(req); | |
1032 | num_req--; | |
1033 | break; | |
1034 | case SSH2_FXP_DATA: | |
1035 | data = buffer_get_string(&msg, &len); | |
1036 | debug3("Received data %llu -> %llu", | |
1037 | (unsigned long long)req->offset, | |
1038 | (unsigned long long)req->offset + len - 1); | |
1039 | if (len > req->len) | |
1040 | fatal("Received more data than asked for " | |
1041 | "%u > %u", len, req->len); | |
1042 | if ((lseek(local_fd, req->offset, SEEK_SET) == -1 || | |
1043 | atomicio(vwrite, local_fd, data, len) != len) && | |
1044 | !write_error) { | |
1045 | write_errno = errno; | |
1046 | write_error = 1; | |
1047 | max_req = 0; | |
1048 | } | |
1049 | progress_counter += len; | |
1050 | xfree(data); | |
1051 | ||
1052 | if (len == req->len) { | |
1053 | TAILQ_REMOVE(&requests, req, tq); | |
1054 | xfree(req); | |
1055 | num_req--; | |
1056 | } else { | |
1057 | /* Resend the request for the missing data */ | |
1058 | debug3("Short data block, re-requesting " | |
1059 | "%llu -> %llu (%2d)", | |
1060 | (unsigned long long)req->offset + len, | |
1061 | (unsigned long long)req->offset + | |
1062 | req->len - 1, num_req); | |
1063 | req->id = conn->msg_id++; | |
1064 | req->len -= len; | |
1065 | req->offset += len; | |
1066 | send_read_request(conn->fd_out, req->id, | |
1067 | req->offset, req->len, handle, handle_len); | |
1068 | /* Reduce the request size */ | |
1069 | if (len < buflen) | |
1070 | buflen = MAX(MIN_READ_SIZE, len); | |
1071 | } | |
1072 | if (max_req > 0) { /* max_req = 0 iff EOF received */ | |
1073 | if (size > 0 && offset > size) { | |
1074 | /* Only one request at a time | |
1075 | * after the expected EOF */ | |
1076 | debug3("Finish at %llu (%2d)", | |
1077 | (unsigned long long)offset, | |
1078 | num_req); | |
1079 | max_req = 1; | |
1080 | } else if (max_req <= conn->num_requests) { | |
1081 | ++max_req; | |
1082 | } | |
1083 | } | |
1084 | break; | |
1085 | default: | |
1086 | fatal("Expected SSH2_FXP_DATA(%u) packet, got %u", | |
1087 | SSH2_FXP_DATA, type); | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | if (showprogress && size) | |
1092 | stop_progress_meter(); | |
1093 | ||
1094 | /* Sanity check */ | |
1095 | if (TAILQ_FIRST(&requests) != NULL) | |
1096 | fatal("Transfer complete, but requests still in queue"); | |
1097 | ||
1098 | if (read_error) { | |
1099 | error("Couldn't read from remote file \"%s\" : %s", | |
1100 | remote_path, fx2txt(status)); | |
1101 | do_close(conn, handle, handle_len); | |
1102 | } else if (write_error) { | |
1103 | error("Couldn't write to \"%s\": %s", local_path, | |
1104 | strerror(write_errno)); | |
1105 | status = -1; | |
1106 | do_close(conn, handle, handle_len); | |
1107 | } else { | |
1108 | status = do_close(conn, handle, handle_len); | |
1109 | ||
1110 | /* Override umask and utimes if asked */ | |
1111 | #ifdef HAVE_FCHMOD | |
1112 | if (pflag && fchmod(local_fd, mode) == -1) | |
1113 | #else | |
1114 | if (pflag && chmod(local_path, mode) == -1) | |
1115 | #endif /* HAVE_FCHMOD */ | |
1116 | error("Couldn't set mode on \"%s\": %s", local_path, | |
1117 | strerror(errno)); | |
1118 | if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) { | |
1119 | struct timeval tv[2]; | |
1120 | tv[0].tv_sec = a->atime; | |
1121 | tv[1].tv_sec = a->mtime; | |
1122 | tv[0].tv_usec = tv[1].tv_usec = 0; | |
1123 | if (utimes(local_path, tv) == -1) | |
1124 | error("Can't set times on \"%s\": %s", | |
1125 | local_path, strerror(errno)); | |
1126 | } | |
1127 | } | |
1128 | close(local_fd); | |
1129 | buffer_free(&msg); | |
1130 | xfree(handle); | |
1131 | ||
1132 | return(status); | |
1133 | } | |
1134 | ||
1135 | int | |
1136 | do_upload(struct sftp_conn *conn, char *local_path, char *remote_path, | |
1137 | int pflag) | |
1138 | { | |
1139 | int local_fd; | |
1140 | int status = SSH2_FX_OK; | |
1141 | u_int handle_len, id, type; | |
1142 | off_t offset; | |
1143 | char *handle, *data; | |
1144 | Buffer msg; | |
1145 | struct stat sb; | |
1146 | Attrib a; | |
1147 | u_int32_t startid; | |
1148 | u_int32_t ackid; | |
1149 | struct outstanding_ack { | |
1150 | u_int id; | |
1151 | u_int len; | |
1152 | off_t offset; | |
1153 | TAILQ_ENTRY(outstanding_ack) tq; | |
1154 | }; | |
1155 | TAILQ_HEAD(ackhead, outstanding_ack) acks; | |
1156 | struct outstanding_ack *ack = NULL; | |
1157 | ||
1158 | TAILQ_INIT(&acks); | |
1159 | ||
1160 | if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) { | |
1161 | error("Couldn't open local file \"%s\" for reading: %s", | |
1162 | local_path, strerror(errno)); | |
1163 | return(-1); | |
1164 | } | |
1165 | if (fstat(local_fd, &sb) == -1) { | |
1166 | error("Couldn't fstat local file \"%s\": %s", | |
1167 | local_path, strerror(errno)); | |
1168 | close(local_fd); | |
1169 | return(-1); | |
1170 | } | |
1171 | if (!S_ISREG(sb.st_mode)) { | |
1172 | error("%s is not a regular file", local_path); | |
1173 | close(local_fd); | |
1174 | return(-1); | |
1175 | } | |
1176 | stat_to_attrib(&sb, &a); | |
1177 | ||
1178 | a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; | |
1179 | a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; | |
1180 | a.perm &= 0777; | |
1181 | if (!pflag) | |
1182 | a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; | |
1183 | ||
1184 | buffer_init(&msg); | |
1185 | ||
1186 | /* Send open request */ | |
1187 | id = conn->msg_id++; | |
1188 | buffer_put_char(&msg, SSH2_FXP_OPEN); | |
1189 | buffer_put_int(&msg, id); | |
1190 | buffer_put_cstring(&msg, remote_path); | |
1191 | buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC); | |
1192 | encode_attrib(&msg, &a); | |
1193 | send_msg(conn->fd_out, &msg); | |
1194 | debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); | |
1195 | ||
1196 | buffer_clear(&msg); | |
1197 | ||
1198 | handle = get_handle(conn->fd_in, id, &handle_len); | |
1199 | if (handle == NULL) { | |
1200 | close(local_fd); | |
1201 | buffer_free(&msg); | |
1202 | return -1; | |
1203 | } | |
1204 | ||
1205 | startid = ackid = id + 1; | |
1206 | data = xmalloc(conn->transfer_buflen); | |
1207 | ||
1208 | /* Read from local and write to remote */ | |
1209 | offset = 0; | |
1210 | if (showprogress) | |
1211 | start_progress_meter(local_path, sb.st_size, &offset); | |
1212 | ||
1213 | for (;;) { | |
1214 | int len; | |
1215 | ||
1216 | /* | |
1217 | * Can't use atomicio here because it returns 0 on EOF, | |
1218 | * thus losing the last block of the file. | |
1219 | * Simulate an EOF on interrupt, allowing ACKs from the | |
1220 | * server to drain. | |
1221 | */ | |
1222 | if (interrupted || status != SSH2_FX_OK) | |
1223 | len = 0; | |
1224 | else do | |
1225 | len = read(local_fd, data, conn->transfer_buflen); | |
1226 | while ((len == -1) && (errno == EINTR || errno == EAGAIN)); | |
1227 | ||
1228 | if (len == -1) | |
1229 | fatal("Couldn't read from \"%s\": %s", local_path, | |
1230 | strerror(errno)); | |
1231 | ||
1232 | if (len != 0) { | |
1233 | ack = xmalloc(sizeof(*ack)); | |
1234 | ack->id = ++id; | |
1235 | ack->offset = offset; | |
1236 | ack->len = len; | |
1237 | TAILQ_INSERT_TAIL(&acks, ack, tq); | |
1238 | ||
1239 | buffer_clear(&msg); | |
1240 | buffer_put_char(&msg, SSH2_FXP_WRITE); | |
1241 | buffer_put_int(&msg, ack->id); | |
1242 | buffer_put_string(&msg, handle, handle_len); | |
1243 | buffer_put_int64(&msg, offset); | |
1244 | buffer_put_string(&msg, data, len); | |
1245 | send_msg(conn->fd_out, &msg); | |
1246 | debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u", | |
1247 | id, (unsigned long long)offset, len); | |
1248 | } else if (TAILQ_FIRST(&acks) == NULL) | |
1249 | break; | |
1250 | ||
1251 | if (ack == NULL) | |
1252 | fatal("Unexpected ACK %u", id); | |
1253 | ||
1254 | if (id == startid || len == 0 || | |
1255 | id - ackid >= conn->num_requests) { | |
1256 | u_int r_id; | |
1257 | ||
1258 | buffer_clear(&msg); | |
1259 | get_msg(conn->fd_in, &msg); | |
1260 | type = buffer_get_char(&msg); | |
1261 | r_id = buffer_get_int(&msg); | |
1262 | ||
1263 | if (type != SSH2_FXP_STATUS) | |
1264 | fatal("Expected SSH2_FXP_STATUS(%d) packet, " | |
1265 | "got %d", SSH2_FXP_STATUS, type); | |
1266 | ||
1267 | status = buffer_get_int(&msg); | |
1268 | debug3("SSH2_FXP_STATUS %d", status); | |
1269 | ||
1270 | /* Find the request in our queue */ | |
1271 | for (ack = TAILQ_FIRST(&acks); | |
1272 | ack != NULL && ack->id != r_id; | |
1273 | ack = TAILQ_NEXT(ack, tq)) | |
1274 | ; | |
1275 | if (ack == NULL) | |
1276 | fatal("Can't find request for ID %u", r_id); | |
1277 | TAILQ_REMOVE(&acks, ack, tq); | |
1278 | debug3("In write loop, ack for %u %u bytes at %lld", | |
1279 | ack->id, ack->len, (long long)ack->offset); | |
1280 | ++ackid; | |
1281 | xfree(ack); | |
1282 | } | |
1283 | offset += len; | |
1284 | if (offset < 0) | |
1285 | fatal("%s: offset < 0", __func__); | |
1286 | } | |
1287 | buffer_free(&msg); | |
1288 | ||
1289 | if (showprogress) | |
1290 | stop_progress_meter(); | |
1291 | xfree(data); | |
1292 | ||
1293 | if (status != SSH2_FX_OK) { | |
1294 | error("Couldn't write to remote file \"%s\": %s", | |
1295 | remote_path, fx2txt(status)); | |
1296 | status = -1; | |
1297 | } | |
1298 | ||
1299 | if (close(local_fd) == -1) { | |
1300 | error("Couldn't close local file \"%s\": %s", local_path, | |
1301 | strerror(errno)); | |
1302 | status = -1; | |
1303 | } | |
1304 | ||
1305 | /* Override umask and utimes if asked */ | |
1306 | if (pflag) | |
1307 | do_fsetstat(conn, handle, handle_len, &a); | |
1308 | ||
1309 | if (do_close(conn, handle, handle_len) != SSH2_FX_OK) | |
1310 | status = -1; | |
1311 | xfree(handle); | |
1312 | ||
1313 | return status; | |
1314 | } |