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1 | /* $OpenBSD: sftp-client.c,v 1.82 2008/04/18 12:32:11 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 | #include <sys/statvfs.h> | |
28 | #include "openbsd-compat/sys-queue.h" | |
29 | #ifdef HAVE_SYS_STAT_H | |
30 | # include <sys/stat.h> | |
31 | #endif | |
32 | #ifdef HAVE_SYS_TIME_H | |
33 | # include <sys/time.h> | |
34 | #endif | |
35 | #include <sys/uio.h> | |
36 | ||
37 | #include <errno.h> | |
38 | #include <fcntl.h> | |
39 | #include <signal.h> | |
40 | #include <stdarg.h> | |
41 | #include <stdio.h> | |
42 | #include <string.h> | |
43 | #include <unistd.h> | |
44 | ||
45 | #include "xmalloc.h" | |
46 | #include "buffer.h" | |
47 | #include "log.h" | |
48 | #include "atomicio.h" | |
49 | #include "progressmeter.h" | |
50 | #include "misc.h" | |
51 | ||
52 | #include "sftp.h" | |
53 | #include "sftp-common.h" | |
54 | #include "sftp-client.h" | |
55 | ||
56 | extern volatile sig_atomic_t interrupted; | |
57 | extern int showprogress; | |
58 | ||
59 | /* Minimum amount of data to read at a time */ | |
60 | #define MIN_READ_SIZE 512 | |
61 | ||
62 | struct sftp_conn { | |
63 | int fd_in; | |
64 | int fd_out; | |
65 | u_int transfer_buflen; | |
66 | u_int num_requests; | |
67 | u_int version; | |
68 | u_int msg_id; | |
69 | #define SFTP_EXT_POSIX_RENAME 0x00000001 | |
70 | #define SFTP_EXT_STATVFS 0x00000002 | |
71 | #define SFTP_EXT_FSTATVFS 0x00000004 | |
72 | u_int exts; | |
73 | }; | |
74 | ||
75 | static void | |
76 | send_msg(int fd, Buffer *m) | |
77 | { | |
78 | u_char mlen[4]; | |
79 | struct iovec iov[2]; | |
80 | ||
81 | if (buffer_len(m) > SFTP_MAX_MSG_LENGTH) | |
82 | fatal("Outbound message too long %u", buffer_len(m)); | |
83 | ||
84 | /* Send length first */ | |
85 | put_u32(mlen, buffer_len(m)); | |
86 | iov[0].iov_base = mlen; | |
87 | iov[0].iov_len = sizeof(mlen); | |
88 | iov[1].iov_base = buffer_ptr(m); | |
89 | iov[1].iov_len = buffer_len(m); | |
90 | ||
91 | if (atomiciov(writev, fd, iov, 2) != buffer_len(m) + sizeof(mlen)) | |
92 | fatal("Couldn't send packet: %s", strerror(errno)); | |
93 | ||
94 | buffer_clear(m); | |
95 | } | |
96 | ||
97 | static void | |
98 | get_msg(int fd, Buffer *m) | |
99 | { | |
100 | u_int msg_len; | |
101 | ||
102 | buffer_append_space(m, 4); | |
103 | if (atomicio(read, fd, buffer_ptr(m), 4) != 4) { | |
104 | if (errno == EPIPE) | |
105 | fatal("Connection closed"); | |
106 | else | |
107 | fatal("Couldn't read packet: %s", strerror(errno)); | |
108 | } | |
109 | ||
110 | msg_len = buffer_get_int(m); | |
111 | if (msg_len > SFTP_MAX_MSG_LENGTH) | |
112 | fatal("Received message too long %u", msg_len); | |
113 | ||
114 | buffer_append_space(m, msg_len); | |
115 | if (atomicio(read, fd, buffer_ptr(m), msg_len) != msg_len) { | |
116 | if (errno == EPIPE) | |
117 | fatal("Connection closed"); | |
118 | else | |
119 | fatal("Read packet: %s", strerror(errno)); | |
120 | } | |
121 | } | |
122 | ||
123 | static void | |
124 | send_string_request(int fd, u_int id, u_int code, char *s, | |
125 | u_int len) | |
126 | { | |
127 | Buffer msg; | |
128 | ||
129 | buffer_init(&msg); | |
130 | buffer_put_char(&msg, code); | |
131 | buffer_put_int(&msg, id); | |
132 | buffer_put_string(&msg, s, len); | |
133 | send_msg(fd, &msg); | |
134 | debug3("Sent message fd %d T:%u I:%u", fd, code, id); | |
135 | buffer_free(&msg); | |
136 | } | |
137 | ||
138 | static void | |
139 | send_string_attrs_request(int fd, u_int id, u_int code, char *s, | |
140 | u_int len, Attrib *a) | |
141 | { | |
142 | Buffer msg; | |
143 | ||
144 | buffer_init(&msg); | |
145 | buffer_put_char(&msg, code); | |
146 | buffer_put_int(&msg, id); | |
147 | buffer_put_string(&msg, s, len); | |
148 | encode_attrib(&msg, a); | |
149 | send_msg(fd, &msg); | |
150 | debug3("Sent message fd %d T:%u I:%u", fd, code, id); | |
151 | buffer_free(&msg); | |
152 | } | |
153 | ||
154 | static u_int | |
155 | get_status(int fd, u_int expected_id) | |
156 | { | |
157 | Buffer msg; | |
158 | u_int type, id, status; | |
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 (%u != %u)", id, expected_id); | |
167 | if (type != SSH2_FXP_STATUS) | |
168 | fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u", | |
169 | SSH2_FXP_STATUS, type); | |
170 | ||
171 | status = buffer_get_int(&msg); | |
172 | buffer_free(&msg); | |
173 | ||
174 | debug3("SSH2_FXP_STATUS %u", status); | |
175 | ||
176 | return(status); | |
177 | } | |
178 | ||
179 | static char * | |
180 | get_handle(int fd, u_int expected_id, u_int *len) | |
181 | { | |
182 | Buffer msg; | |
183 | u_int type, id; | |
184 | char *handle; | |
185 | ||
186 | buffer_init(&msg); | |
187 | get_msg(fd, &msg); | |
188 | type = buffer_get_char(&msg); | |
189 | id = buffer_get_int(&msg); | |
190 | ||
191 | if (id != expected_id) | |
192 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
193 | if (type == SSH2_FXP_STATUS) { | |
194 | int status = buffer_get_int(&msg); | |
195 | ||
196 | error("Couldn't get handle: %s", fx2txt(status)); | |
197 | buffer_free(&msg); | |
198 | return(NULL); | |
199 | } else if (type != SSH2_FXP_HANDLE) | |
200 | fatal("Expected SSH2_FXP_HANDLE(%u) packet, got %u", | |
201 | SSH2_FXP_HANDLE, type); | |
202 | ||
203 | handle = buffer_get_string(&msg, len); | |
204 | buffer_free(&msg); | |
205 | ||
206 | return(handle); | |
207 | } | |
208 | ||
209 | static Attrib * | |
210 | get_decode_stat(int fd, u_int expected_id, int quiet) | |
211 | { | |
212 | Buffer msg; | |
213 | u_int type, id; | |
214 | Attrib *a; | |
215 | ||
216 | buffer_init(&msg); | |
217 | get_msg(fd, &msg); | |
218 | ||
219 | type = buffer_get_char(&msg); | |
220 | id = buffer_get_int(&msg); | |
221 | ||
222 | debug3("Received stat reply T:%u I:%u", type, id); | |
223 | if (id != expected_id) | |
224 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
225 | if (type == SSH2_FXP_STATUS) { | |
226 | int status = buffer_get_int(&msg); | |
227 | ||
228 | if (quiet) | |
229 | debug("Couldn't stat remote file: %s", fx2txt(status)); | |
230 | else | |
231 | error("Couldn't stat remote file: %s", fx2txt(status)); | |
232 | buffer_free(&msg); | |
233 | return(NULL); | |
234 | } else if (type != SSH2_FXP_ATTRS) { | |
235 | fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u", | |
236 | SSH2_FXP_ATTRS, type); | |
237 | } | |
238 | a = decode_attrib(&msg); | |
239 | buffer_free(&msg); | |
240 | ||
241 | return(a); | |
242 | } | |
243 | ||
244 | static int | |
245 | get_decode_statvfs(int fd, struct statvfs *st, u_int expected_id, int quiet) | |
246 | { | |
247 | Buffer msg; | |
248 | u_int type, id, flag; | |
249 | ||
250 | buffer_init(&msg); | |
251 | get_msg(fd, &msg); | |
252 | ||
253 | type = buffer_get_char(&msg); | |
254 | id = buffer_get_int(&msg); | |
255 | ||
256 | debug3("Received statvfs reply T:%u I:%u", type, id); | |
257 | if (id != expected_id) | |
258 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
259 | if (type == SSH2_FXP_STATUS) { | |
260 | int status = buffer_get_int(&msg); | |
261 | ||
262 | if (quiet) | |
263 | debug("Couldn't statvfs: %s", fx2txt(status)); | |
264 | else | |
265 | error("Couldn't statvfs: %s", fx2txt(status)); | |
266 | buffer_free(&msg); | |
267 | return -1; | |
268 | } else if (type != SSH2_FXP_EXTENDED_REPLY) { | |
269 | fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u", | |
270 | SSH2_FXP_EXTENDED_REPLY, type); | |
271 | } | |
272 | ||
273 | bzero(st, sizeof(*st)); | |
274 | st->f_bsize = buffer_get_int(&msg); | |
275 | st->f_frsize = buffer_get_int(&msg); | |
276 | st->f_blocks = buffer_get_int64(&msg); | |
277 | st->f_bfree = buffer_get_int64(&msg); | |
278 | st->f_bavail = buffer_get_int64(&msg); | |
279 | st->f_files = buffer_get_int64(&msg); | |
280 | st->f_ffree = buffer_get_int64(&msg); | |
281 | st->f_favail = buffer_get_int64(&msg); | |
282 | st->f_fsid = buffer_get_int(&msg); | |
283 | flag = buffer_get_int(&msg); | |
284 | st->f_namemax = buffer_get_int(&msg); | |
285 | ||
286 | st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0; | |
287 | st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0; | |
288 | ||
289 | buffer_free(&msg); | |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
294 | struct sftp_conn * | |
295 | do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests) | |
296 | { | |
297 | u_int type, exts = 0; | |
298 | int version; | |
299 | Buffer msg; | |
300 | struct sftp_conn *ret; | |
301 | ||
302 | buffer_init(&msg); | |
303 | buffer_put_char(&msg, SSH2_FXP_INIT); | |
304 | buffer_put_int(&msg, SSH2_FILEXFER_VERSION); | |
305 | send_msg(fd_out, &msg); | |
306 | ||
307 | buffer_clear(&msg); | |
308 | ||
309 | get_msg(fd_in, &msg); | |
310 | ||
311 | /* Expecting a VERSION reply */ | |
312 | if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) { | |
313 | error("Invalid packet back from SSH2_FXP_INIT (type %u)", | |
314 | type); | |
315 | buffer_free(&msg); | |
316 | return(NULL); | |
317 | } | |
318 | version = buffer_get_int(&msg); | |
319 | ||
320 | debug2("Remote version: %d", version); | |
321 | ||
322 | /* Check for extensions */ | |
323 | while (buffer_len(&msg) > 0) { | |
324 | char *name = buffer_get_string(&msg, NULL); | |
325 | char *value = buffer_get_string(&msg, NULL); | |
326 | ||
327 | debug2("Init extension: \"%s\"", name); | |
328 | if (strcmp(name, "posix-rename@openssh.com") == 0 && | |
329 | strcmp(value, "1") == 0) | |
330 | exts |= SFTP_EXT_POSIX_RENAME; | |
331 | if (strcmp(name, "statvfs@openssh.com") == 0 && | |
332 | strcmp(value, "1") == 0) | |
333 | exts |= SFTP_EXT_STATVFS; | |
334 | if (strcmp(name, "fstatvfs@openssh.com") == 0 && | |
335 | strcmp(value, "1") == 0) | |
336 | exts |= SFTP_EXT_FSTATVFS; | |
337 | xfree(name); | |
338 | xfree(value); | |
339 | } | |
340 | ||
341 | buffer_free(&msg); | |
342 | ||
343 | ret = xmalloc(sizeof(*ret)); | |
344 | ret->fd_in = fd_in; | |
345 | ret->fd_out = fd_out; | |
346 | ret->transfer_buflen = transfer_buflen; | |
347 | ret->num_requests = num_requests; | |
348 | ret->version = version; | |
349 | ret->msg_id = 1; | |
350 | ret->exts = exts; | |
351 | ||
352 | /* Some filexfer v.0 servers don't support large packets */ | |
353 | if (version == 0) | |
354 | ret->transfer_buflen = MIN(ret->transfer_buflen, 20480); | |
355 | ||
356 | return(ret); | |
357 | } | |
358 | ||
359 | u_int | |
360 | sftp_proto_version(struct sftp_conn *conn) | |
361 | { | |
362 | return(conn->version); | |
363 | } | |
364 | ||
365 | int | |
366 | do_close(struct sftp_conn *conn, char *handle, u_int handle_len) | |
367 | { | |
368 | u_int id, status; | |
369 | Buffer msg; | |
370 | ||
371 | buffer_init(&msg); | |
372 | ||
373 | id = conn->msg_id++; | |
374 | buffer_put_char(&msg, SSH2_FXP_CLOSE); | |
375 | buffer_put_int(&msg, id); | |
376 | buffer_put_string(&msg, handle, handle_len); | |
377 | send_msg(conn->fd_out, &msg); | |
378 | debug3("Sent message SSH2_FXP_CLOSE I:%u", id); | |
379 | ||
380 | status = get_status(conn->fd_in, id); | |
381 | if (status != SSH2_FX_OK) | |
382 | error("Couldn't close file: %s", fx2txt(status)); | |
383 | ||
384 | buffer_free(&msg); | |
385 | ||
386 | return(status); | |
387 | } | |
388 | ||
389 | ||
390 | static int | |
391 | do_lsreaddir(struct sftp_conn *conn, char *path, int printflag, | |
392 | SFTP_DIRENT ***dir) | |
393 | { | |
394 | Buffer msg; | |
395 | u_int count, type, id, handle_len, i, expected_id, ents = 0; | |
396 | char *handle; | |
397 | ||
398 | id = conn->msg_id++; | |
399 | ||
400 | buffer_init(&msg); | |
401 | buffer_put_char(&msg, SSH2_FXP_OPENDIR); | |
402 | buffer_put_int(&msg, id); | |
403 | buffer_put_cstring(&msg, path); | |
404 | send_msg(conn->fd_out, &msg); | |
405 | ||
406 | buffer_clear(&msg); | |
407 | ||
408 | handle = get_handle(conn->fd_in, id, &handle_len); | |
409 | if (handle == NULL) | |
410 | return(-1); | |
411 | ||
412 | if (dir) { | |
413 | ents = 0; | |
414 | *dir = xmalloc(sizeof(**dir)); | |
415 | (*dir)[0] = NULL; | |
416 | } | |
417 | ||
418 | for (; !interrupted;) { | |
419 | id = expected_id = conn->msg_id++; | |
420 | ||
421 | debug3("Sending SSH2_FXP_READDIR I:%u", id); | |
422 | ||
423 | buffer_clear(&msg); | |
424 | buffer_put_char(&msg, SSH2_FXP_READDIR); | |
425 | buffer_put_int(&msg, id); | |
426 | buffer_put_string(&msg, handle, handle_len); | |
427 | send_msg(conn->fd_out, &msg); | |
428 | ||
429 | buffer_clear(&msg); | |
430 | ||
431 | get_msg(conn->fd_in, &msg); | |
432 | ||
433 | type = buffer_get_char(&msg); | |
434 | id = buffer_get_int(&msg); | |
435 | ||
436 | debug3("Received reply T:%u I:%u", type, id); | |
437 | ||
438 | if (id != expected_id) | |
439 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
440 | ||
441 | if (type == SSH2_FXP_STATUS) { | |
442 | int status = buffer_get_int(&msg); | |
443 | ||
444 | debug3("Received SSH2_FXP_STATUS %d", status); | |
445 | ||
446 | if (status == SSH2_FX_EOF) { | |
447 | break; | |
448 | } else { | |
449 | error("Couldn't read directory: %s", | |
450 | fx2txt(status)); | |
451 | do_close(conn, handle, handle_len); | |
452 | xfree(handle); | |
453 | return(status); | |
454 | } | |
455 | } else if (type != SSH2_FXP_NAME) | |
456 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", | |
457 | SSH2_FXP_NAME, type); | |
458 | ||
459 | count = buffer_get_int(&msg); | |
460 | if (count == 0) | |
461 | break; | |
462 | debug3("Received %d SSH2_FXP_NAME responses", count); | |
463 | for (i = 0; i < count; i++) { | |
464 | char *filename, *longname; | |
465 | Attrib *a; | |
466 | ||
467 | filename = buffer_get_string(&msg, NULL); | |
468 | longname = buffer_get_string(&msg, NULL); | |
469 | a = decode_attrib(&msg); | |
470 | ||
471 | if (printflag) | |
472 | printf("%s\n", longname); | |
473 | ||
474 | if (dir) { | |
475 | *dir = xrealloc(*dir, ents + 2, sizeof(**dir)); | |
476 | (*dir)[ents] = xmalloc(sizeof(***dir)); | |
477 | (*dir)[ents]->filename = xstrdup(filename); | |
478 | (*dir)[ents]->longname = xstrdup(longname); | |
479 | memcpy(&(*dir)[ents]->a, a, sizeof(*a)); | |
480 | (*dir)[++ents] = NULL; | |
481 | } | |
482 | ||
483 | xfree(filename); | |
484 | xfree(longname); | |
485 | } | |
486 | } | |
487 | ||
488 | buffer_free(&msg); | |
489 | do_close(conn, handle, handle_len); | |
490 | xfree(handle); | |
491 | ||
492 | /* Don't return partial matches on interrupt */ | |
493 | if (interrupted && dir != NULL && *dir != NULL) { | |
494 | free_sftp_dirents(*dir); | |
495 | *dir = xmalloc(sizeof(**dir)); | |
496 | **dir = NULL; | |
497 | } | |
498 | ||
499 | return(0); | |
500 | } | |
501 | ||
502 | int | |
503 | do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir) | |
504 | { | |
505 | return(do_lsreaddir(conn, path, 0, dir)); | |
506 | } | |
507 | ||
508 | void free_sftp_dirents(SFTP_DIRENT **s) | |
509 | { | |
510 | int i; | |
511 | ||
512 | for (i = 0; s[i]; i++) { | |
513 | xfree(s[i]->filename); | |
514 | xfree(s[i]->longname); | |
515 | xfree(s[i]); | |
516 | } | |
517 | xfree(s); | |
518 | } | |
519 | ||
520 | int | |
521 | do_rm(struct sftp_conn *conn, char *path) | |
522 | { | |
523 | u_int status, id; | |
524 | ||
525 | debug2("Sending SSH2_FXP_REMOVE \"%s\"", path); | |
526 | ||
527 | id = conn->msg_id++; | |
528 | send_string_request(conn->fd_out, id, SSH2_FXP_REMOVE, path, | |
529 | strlen(path)); | |
530 | status = get_status(conn->fd_in, id); | |
531 | if (status != SSH2_FX_OK) | |
532 | error("Couldn't delete file: %s", fx2txt(status)); | |
533 | return(status); | |
534 | } | |
535 | ||
536 | int | |
537 | do_mkdir(struct sftp_conn *conn, char *path, Attrib *a) | |
538 | { | |
539 | u_int status, id; | |
540 | ||
541 | id = conn->msg_id++; | |
542 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_MKDIR, path, | |
543 | strlen(path), a); | |
544 | ||
545 | status = get_status(conn->fd_in, id); | |
546 | if (status != SSH2_FX_OK) | |
547 | error("Couldn't create directory: %s", fx2txt(status)); | |
548 | ||
549 | return(status); | |
550 | } | |
551 | ||
552 | int | |
553 | do_rmdir(struct sftp_conn *conn, char *path) | |
554 | { | |
555 | u_int status, id; | |
556 | ||
557 | id = conn->msg_id++; | |
558 | send_string_request(conn->fd_out, id, SSH2_FXP_RMDIR, path, | |
559 | strlen(path)); | |
560 | ||
561 | status = get_status(conn->fd_in, id); | |
562 | if (status != SSH2_FX_OK) | |
563 | error("Couldn't remove directory: %s", fx2txt(status)); | |
564 | ||
565 | return(status); | |
566 | } | |
567 | ||
568 | Attrib * | |
569 | do_stat(struct sftp_conn *conn, char *path, int quiet) | |
570 | { | |
571 | u_int id; | |
572 | ||
573 | id = conn->msg_id++; | |
574 | ||
575 | send_string_request(conn->fd_out, id, | |
576 | conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT, | |
577 | path, strlen(path)); | |
578 | ||
579 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
580 | } | |
581 | ||
582 | Attrib * | |
583 | do_lstat(struct sftp_conn *conn, char *path, int quiet) | |
584 | { | |
585 | u_int id; | |
586 | ||
587 | if (conn->version == 0) { | |
588 | if (quiet) | |
589 | debug("Server version does not support lstat operation"); | |
590 | else | |
591 | logit("Server version does not support lstat operation"); | |
592 | return(do_stat(conn, path, quiet)); | |
593 | } | |
594 | ||
595 | id = conn->msg_id++; | |
596 | send_string_request(conn->fd_out, id, SSH2_FXP_LSTAT, path, | |
597 | strlen(path)); | |
598 | ||
599 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
600 | } | |
601 | ||
602 | #ifdef notyet | |
603 | Attrib * | |
604 | do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet) | |
605 | { | |
606 | u_int id; | |
607 | ||
608 | id = conn->msg_id++; | |
609 | send_string_request(conn->fd_out, id, SSH2_FXP_FSTAT, handle, | |
610 | handle_len); | |
611 | ||
612 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
613 | } | |
614 | #endif | |
615 | ||
616 | int | |
617 | do_setstat(struct sftp_conn *conn, char *path, Attrib *a) | |
618 | { | |
619 | u_int status, id; | |
620 | ||
621 | id = conn->msg_id++; | |
622 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_SETSTAT, path, | |
623 | strlen(path), a); | |
624 | ||
625 | status = get_status(conn->fd_in, id); | |
626 | if (status != SSH2_FX_OK) | |
627 | error("Couldn't setstat on \"%s\": %s", path, | |
628 | fx2txt(status)); | |
629 | ||
630 | return(status); | |
631 | } | |
632 | ||
633 | int | |
634 | do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len, | |
635 | Attrib *a) | |
636 | { | |
637 | u_int status, id; | |
638 | ||
639 | id = conn->msg_id++; | |
640 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_FSETSTAT, handle, | |
641 | handle_len, a); | |
642 | ||
643 | status = get_status(conn->fd_in, id); | |
644 | if (status != SSH2_FX_OK) | |
645 | error("Couldn't fsetstat: %s", fx2txt(status)); | |
646 | ||
647 | return(status); | |
648 | } | |
649 | ||
650 | char * | |
651 | do_realpath(struct sftp_conn *conn, char *path) | |
652 | { | |
653 | Buffer msg; | |
654 | u_int type, expected_id, count, id; | |
655 | char *filename, *longname; | |
656 | Attrib *a; | |
657 | ||
658 | expected_id = id = conn->msg_id++; | |
659 | send_string_request(conn->fd_out, id, SSH2_FXP_REALPATH, path, | |
660 | strlen(path)); | |
661 | ||
662 | buffer_init(&msg); | |
663 | ||
664 | get_msg(conn->fd_in, &msg); | |
665 | type = buffer_get_char(&msg); | |
666 | id = buffer_get_int(&msg); | |
667 | ||
668 | if (id != expected_id) | |
669 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
670 | ||
671 | if (type == SSH2_FXP_STATUS) { | |
672 | u_int status = buffer_get_int(&msg); | |
673 | ||
674 | error("Couldn't canonicalise: %s", fx2txt(status)); | |
675 | return(NULL); | |
676 | } else if (type != SSH2_FXP_NAME) | |
677 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", | |
678 | SSH2_FXP_NAME, type); | |
679 | ||
680 | count = buffer_get_int(&msg); | |
681 | if (count != 1) | |
682 | fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count); | |
683 | ||
684 | filename = buffer_get_string(&msg, NULL); | |
685 | longname = buffer_get_string(&msg, NULL); | |
686 | a = decode_attrib(&msg); | |
687 | ||
688 | debug3("SSH_FXP_REALPATH %s -> %s", path, filename); | |
689 | ||
690 | xfree(longname); | |
691 | ||
692 | buffer_free(&msg); | |
693 | ||
694 | return(filename); | |
695 | } | |
696 | ||
697 | int | |
698 | do_rename(struct sftp_conn *conn, char *oldpath, char *newpath) | |
699 | { | |
700 | Buffer msg; | |
701 | u_int status, id; | |
702 | ||
703 | buffer_init(&msg); | |
704 | ||
705 | /* Send rename request */ | |
706 | id = conn->msg_id++; | |
707 | if ((conn->exts & SFTP_EXT_POSIX_RENAME)) { | |
708 | buffer_put_char(&msg, SSH2_FXP_EXTENDED); | |
709 | buffer_put_int(&msg, id); | |
710 | buffer_put_cstring(&msg, "posix-rename@openssh.com"); | |
711 | } else { | |
712 | buffer_put_char(&msg, SSH2_FXP_RENAME); | |
713 | buffer_put_int(&msg, id); | |
714 | } | |
715 | buffer_put_cstring(&msg, oldpath); | |
716 | buffer_put_cstring(&msg, newpath); | |
717 | send_msg(conn->fd_out, &msg); | |
718 | debug3("Sent message %s \"%s\" -> \"%s\"", | |
719 | (conn->exts & SFTP_EXT_POSIX_RENAME) ? "posix-rename@openssh.com" : | |
720 | "SSH2_FXP_RENAME", oldpath, newpath); | |
721 | buffer_free(&msg); | |
722 | ||
723 | status = get_status(conn->fd_in, id); | |
724 | if (status != SSH2_FX_OK) | |
725 | error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, | |
726 | newpath, fx2txt(status)); | |
727 | ||
728 | return(status); | |
729 | } | |
730 | ||
731 | int | |
732 | do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath) | |
733 | { | |
734 | Buffer msg; | |
735 | u_int status, id; | |
736 | ||
737 | if (conn->version < 3) { | |
738 | error("This server does not support the symlink operation"); | |
739 | return(SSH2_FX_OP_UNSUPPORTED); | |
740 | } | |
741 | ||
742 | buffer_init(&msg); | |
743 | ||
744 | /* Send symlink request */ | |
745 | id = conn->msg_id++; | |
746 | buffer_put_char(&msg, SSH2_FXP_SYMLINK); | |
747 | buffer_put_int(&msg, id); | |
748 | buffer_put_cstring(&msg, oldpath); | |
749 | buffer_put_cstring(&msg, newpath); | |
750 | send_msg(conn->fd_out, &msg); | |
751 | debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath, | |
752 | newpath); | |
753 | buffer_free(&msg); | |
754 | ||
755 | status = get_status(conn->fd_in, id); | |
756 | if (status != SSH2_FX_OK) | |
757 | error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath, | |
758 | newpath, fx2txt(status)); | |
759 | ||
760 | return(status); | |
761 | } | |
762 | ||
763 | #ifdef notyet | |
764 | char * | |
765 | do_readlink(struct sftp_conn *conn, char *path) | |
766 | { | |
767 | Buffer msg; | |
768 | u_int type, expected_id, count, id; | |
769 | char *filename, *longname; | |
770 | Attrib *a; | |
771 | ||
772 | expected_id = id = conn->msg_id++; | |
773 | send_string_request(conn->fd_out, id, SSH2_FXP_READLINK, path, | |
774 | strlen(path)); | |
775 | ||
776 | buffer_init(&msg); | |
777 | ||
778 | get_msg(conn->fd_in, &msg); | |
779 | type = buffer_get_char(&msg); | |
780 | id = buffer_get_int(&msg); | |
781 | ||
782 | if (id != expected_id) | |
783 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
784 | ||
785 | if (type == SSH2_FXP_STATUS) { | |
786 | u_int status = buffer_get_int(&msg); | |
787 | ||
788 | error("Couldn't readlink: %s", fx2txt(status)); | |
789 | return(NULL); | |
790 | } else if (type != SSH2_FXP_NAME) | |
791 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", | |
792 | SSH2_FXP_NAME, type); | |
793 | ||
794 | count = buffer_get_int(&msg); | |
795 | if (count != 1) | |
796 | fatal("Got multiple names (%d) from SSH_FXP_READLINK", count); | |
797 | ||
798 | filename = buffer_get_string(&msg, NULL); | |
799 | longname = buffer_get_string(&msg, NULL); | |
800 | a = decode_attrib(&msg); | |
801 | ||
802 | debug3("SSH_FXP_READLINK %s -> %s", path, filename); | |
803 | ||
804 | xfree(longname); | |
805 | ||
806 | buffer_free(&msg); | |
807 | ||
808 | return(filename); | |
809 | } | |
810 | #endif | |
811 | ||
812 | int | |
813 | do_statvfs(struct sftp_conn *conn, const char *path, struct statvfs *st, | |
814 | int quiet) | |
815 | { | |
816 | Buffer msg; | |
817 | u_int id; | |
818 | ||
819 | if ((conn->exts & SFTP_EXT_STATVFS) == 0) { | |
820 | error("Server does not support statvfs@openssh.com extension"); | |
821 | return -1; | |
822 | } | |
823 | ||
824 | id = conn->msg_id++; | |
825 | ||
826 | buffer_init(&msg); | |
827 | buffer_clear(&msg); | |
828 | buffer_put_char(&msg, SSH2_FXP_EXTENDED); | |
829 | buffer_put_int(&msg, id); | |
830 | buffer_put_cstring(&msg, "statvfs@openssh.com"); | |
831 | buffer_put_cstring(&msg, path); | |
832 | send_msg(conn->fd_out, &msg); | |
833 | buffer_free(&msg); | |
834 | ||
835 | return get_decode_statvfs(conn->fd_in, st, id, quiet); | |
836 | } | |
837 | ||
838 | #ifdef notyet | |
839 | int | |
840 | do_fstatvfs(struct sftp_conn *conn, const char *handle, u_int handle_len, | |
841 | struct statvfs *st, int quiet) | |
842 | { | |
843 | Buffer msg; | |
844 | u_int id; | |
845 | ||
846 | if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) { | |
847 | error("Server does not support fstatvfs@openssh.com extension"); | |
848 | return -1; | |
849 | } | |
850 | ||
851 | id = conn->msg_id++; | |
852 | ||
853 | buffer_init(&msg); | |
854 | buffer_clear(&msg); | |
855 | buffer_put_char(&msg, SSH2_FXP_EXTENDED); | |
856 | buffer_put_int(&msg, id); | |
857 | buffer_put_cstring(&msg, "fstatvfs@openssh.com"); | |
858 | buffer_put_string(&msg, handle, handle_len); | |
859 | send_msg(conn->fd_out, &msg); | |
860 | buffer_free(&msg); | |
861 | ||
862 | return get_decode_statvfs(conn->fd_in, st, id, quiet); | |
863 | } | |
864 | #endif | |
865 | ||
866 | static void | |
867 | send_read_request(int fd_out, u_int id, u_int64_t offset, u_int len, | |
868 | char *handle, u_int handle_len) | |
869 | { | |
870 | Buffer msg; | |
871 | ||
872 | buffer_init(&msg); | |
873 | buffer_clear(&msg); | |
874 | buffer_put_char(&msg, SSH2_FXP_READ); | |
875 | buffer_put_int(&msg, id); | |
876 | buffer_put_string(&msg, handle, handle_len); | |
877 | buffer_put_int64(&msg, offset); | |
878 | buffer_put_int(&msg, len); | |
879 | send_msg(fd_out, &msg); | |
880 | buffer_free(&msg); | |
881 | } | |
882 | ||
883 | int | |
884 | do_download(struct sftp_conn *conn, char *remote_path, char *local_path, | |
885 | int pflag) | |
886 | { | |
887 | Attrib junk, *a; | |
888 | Buffer msg; | |
889 | char *handle; | |
890 | int local_fd, status = 0, write_error; | |
891 | int read_error, write_errno; | |
892 | u_int64_t offset, size; | |
893 | u_int handle_len, mode, type, id, buflen, num_req, max_req; | |
894 | off_t progress_counter; | |
895 | struct request { | |
896 | u_int id; | |
897 | u_int len; | |
898 | u_int64_t offset; | |
899 | TAILQ_ENTRY(request) tq; | |
900 | }; | |
901 | TAILQ_HEAD(reqhead, request) requests; | |
902 | struct request *req; | |
903 | ||
904 | TAILQ_INIT(&requests); | |
905 | ||
906 | a = do_stat(conn, remote_path, 0); | |
907 | if (a == NULL) | |
908 | return(-1); | |
909 | ||
910 | /* XXX: should we preserve set[ug]id? */ | |
911 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) | |
912 | mode = a->perm & 0777; | |
913 | else | |
914 | mode = 0666; | |
915 | ||
916 | if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) && | |
917 | (!S_ISREG(a->perm))) { | |
918 | error("Cannot download non-regular file: %s", remote_path); | |
919 | return(-1); | |
920 | } | |
921 | ||
922 | if (a->flags & SSH2_FILEXFER_ATTR_SIZE) | |
923 | size = a->size; | |
924 | else | |
925 | size = 0; | |
926 | ||
927 | buflen = conn->transfer_buflen; | |
928 | buffer_init(&msg); | |
929 | ||
930 | /* Send open request */ | |
931 | id = conn->msg_id++; | |
932 | buffer_put_char(&msg, SSH2_FXP_OPEN); | |
933 | buffer_put_int(&msg, id); | |
934 | buffer_put_cstring(&msg, remote_path); | |
935 | buffer_put_int(&msg, SSH2_FXF_READ); | |
936 | attrib_clear(&junk); /* Send empty attributes */ | |
937 | encode_attrib(&msg, &junk); | |
938 | send_msg(conn->fd_out, &msg); | |
939 | debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); | |
940 | ||
941 | handle = get_handle(conn->fd_in, id, &handle_len); | |
942 | if (handle == NULL) { | |
943 | buffer_free(&msg); | |
944 | return(-1); | |
945 | } | |
946 | ||
947 | local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC, | |
948 | mode | S_IWRITE); | |
949 | if (local_fd == -1) { | |
950 | error("Couldn't open local file \"%s\" for writing: %s", | |
951 | local_path, strerror(errno)); | |
952 | do_close(conn, handle, handle_len); | |
953 | buffer_free(&msg); | |
954 | xfree(handle); | |
955 | return(-1); | |
956 | } | |
957 | ||
958 | /* Read from remote and write to local */ | |
959 | write_error = read_error = write_errno = num_req = offset = 0; | |
960 | max_req = 1; | |
961 | progress_counter = 0; | |
962 | ||
963 | if (showprogress && size != 0) | |
964 | start_progress_meter(remote_path, size, &progress_counter); | |
965 | ||
966 | while (num_req > 0 || max_req > 0) { | |
967 | char *data; | |
968 | u_int len; | |
969 | ||
970 | /* | |
971 | * Simulate EOF on interrupt: stop sending new requests and | |
972 | * allow outstanding requests to drain gracefully | |
973 | */ | |
974 | if (interrupted) { | |
975 | if (num_req == 0) /* If we haven't started yet... */ | |
976 | break; | |
977 | max_req = 0; | |
978 | } | |
979 | ||
980 | /* Send some more requests */ | |
981 | while (num_req < max_req) { | |
982 | debug3("Request range %llu -> %llu (%d/%d)", | |
983 | (unsigned long long)offset, | |
984 | (unsigned long long)offset + buflen - 1, | |
985 | num_req, max_req); | |
986 | req = xmalloc(sizeof(*req)); | |
987 | req->id = conn->msg_id++; | |
988 | req->len = buflen; | |
989 | req->offset = offset; | |
990 | offset += buflen; | |
991 | num_req++; | |
992 | TAILQ_INSERT_TAIL(&requests, req, tq); | |
993 | send_read_request(conn->fd_out, req->id, req->offset, | |
994 | req->len, handle, handle_len); | |
995 | } | |
996 | ||
997 | buffer_clear(&msg); | |
998 | get_msg(conn->fd_in, &msg); | |
999 | type = buffer_get_char(&msg); | |
1000 | id = buffer_get_int(&msg); | |
1001 | debug3("Received reply T:%u I:%u R:%d", type, id, max_req); | |
1002 | ||
1003 | /* Find the request in our queue */ | |
1004 | for (req = TAILQ_FIRST(&requests); | |
1005 | req != NULL && req->id != id; | |
1006 | req = TAILQ_NEXT(req, tq)) | |
1007 | ; | |
1008 | if (req == NULL) | |
1009 | fatal("Unexpected reply %u", id); | |
1010 | ||
1011 | switch (type) { | |
1012 | case SSH2_FXP_STATUS: | |
1013 | status = buffer_get_int(&msg); | |
1014 | if (status != SSH2_FX_EOF) | |
1015 | read_error = 1; | |
1016 | max_req = 0; | |
1017 | TAILQ_REMOVE(&requests, req, tq); | |
1018 | xfree(req); | |
1019 | num_req--; | |
1020 | break; | |
1021 | case SSH2_FXP_DATA: | |
1022 | data = buffer_get_string(&msg, &len); | |
1023 | debug3("Received data %llu -> %llu", | |
1024 | (unsigned long long)req->offset, | |
1025 | (unsigned long long)req->offset + len - 1); | |
1026 | if (len > req->len) | |
1027 | fatal("Received more data than asked for " | |
1028 | "%u > %u", len, req->len); | |
1029 | if ((lseek(local_fd, req->offset, SEEK_SET) == -1 || | |
1030 | atomicio(vwrite, local_fd, data, len) != len) && | |
1031 | !write_error) { | |
1032 | write_errno = errno; | |
1033 | write_error = 1; | |
1034 | max_req = 0; | |
1035 | } | |
1036 | progress_counter += len; | |
1037 | xfree(data); | |
1038 | ||
1039 | if (len == req->len) { | |
1040 | TAILQ_REMOVE(&requests, req, tq); | |
1041 | xfree(req); | |
1042 | num_req--; | |
1043 | } else { | |
1044 | /* Resend the request for the missing data */ | |
1045 | debug3("Short data block, re-requesting " | |
1046 | "%llu -> %llu (%2d)", | |
1047 | (unsigned long long)req->offset + len, | |
1048 | (unsigned long long)req->offset + | |
1049 | req->len - 1, num_req); | |
1050 | req->id = conn->msg_id++; | |
1051 | req->len -= len; | |
1052 | req->offset += len; | |
1053 | send_read_request(conn->fd_out, req->id, | |
1054 | req->offset, req->len, handle, handle_len); | |
1055 | /* Reduce the request size */ | |
1056 | if (len < buflen) | |
1057 | buflen = MAX(MIN_READ_SIZE, len); | |
1058 | } | |
1059 | if (max_req > 0) { /* max_req = 0 iff EOF received */ | |
1060 | if (size > 0 && offset > size) { | |
1061 | /* Only one request at a time | |
1062 | * after the expected EOF */ | |
1063 | debug3("Finish at %llu (%2d)", | |
1064 | (unsigned long long)offset, | |
1065 | num_req); | |
1066 | max_req = 1; | |
1067 | } else if (max_req <= conn->num_requests) { | |
1068 | ++max_req; | |
1069 | } | |
1070 | } | |
1071 | break; | |
1072 | default: | |
1073 | fatal("Expected SSH2_FXP_DATA(%u) packet, got %u", | |
1074 | SSH2_FXP_DATA, type); | |
1075 | } | |
1076 | } | |
1077 | ||
1078 | if (showprogress && size) | |
1079 | stop_progress_meter(); | |
1080 | ||
1081 | /* Sanity check */ | |
1082 | if (TAILQ_FIRST(&requests) != NULL) | |
1083 | fatal("Transfer complete, but requests still in queue"); | |
1084 | ||
1085 | if (read_error) { | |
1086 | error("Couldn't read from remote file \"%s\" : %s", | |
1087 | remote_path, fx2txt(status)); | |
1088 | do_close(conn, handle, handle_len); | |
1089 | } else if (write_error) { | |
1090 | error("Couldn't write to \"%s\": %s", local_path, | |
1091 | strerror(write_errno)); | |
1092 | status = -1; | |
1093 | do_close(conn, handle, handle_len); | |
1094 | } else { | |
1095 | status = do_close(conn, handle, handle_len); | |
1096 | ||
1097 | /* Override umask and utimes if asked */ | |
1098 | #ifdef HAVE_FCHMOD | |
1099 | if (pflag && fchmod(local_fd, mode) == -1) | |
1100 | #else | |
1101 | if (pflag && chmod(local_path, mode) == -1) | |
1102 | #endif /* HAVE_FCHMOD */ | |
1103 | error("Couldn't set mode on \"%s\": %s", local_path, | |
1104 | strerror(errno)); | |
1105 | if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) { | |
1106 | struct timeval tv[2]; | |
1107 | tv[0].tv_sec = a->atime; | |
1108 | tv[1].tv_sec = a->mtime; | |
1109 | tv[0].tv_usec = tv[1].tv_usec = 0; | |
1110 | if (utimes(local_path, tv) == -1) | |
1111 | error("Can't set times on \"%s\": %s", | |
1112 | local_path, strerror(errno)); | |
1113 | } | |
1114 | } | |
1115 | close(local_fd); | |
1116 | buffer_free(&msg); | |
1117 | xfree(handle); | |
1118 | ||
1119 | return(status); | |
1120 | } | |
1121 | ||
1122 | int | |
1123 | do_upload(struct sftp_conn *conn, char *local_path, char *remote_path, | |
1124 | int pflag) | |
1125 | { | |
1126 | int local_fd; | |
1127 | int status = SSH2_FX_OK; | |
1128 | u_int handle_len, id, type; | |
1129 | off_t offset; | |
1130 | char *handle, *data; | |
1131 | Buffer msg; | |
1132 | struct stat sb; | |
1133 | Attrib a; | |
1134 | u_int32_t startid; | |
1135 | u_int32_t ackid; | |
1136 | struct outstanding_ack { | |
1137 | u_int id; | |
1138 | u_int len; | |
1139 | off_t offset; | |
1140 | TAILQ_ENTRY(outstanding_ack) tq; | |
1141 | }; | |
1142 | TAILQ_HEAD(ackhead, outstanding_ack) acks; | |
1143 | struct outstanding_ack *ack = NULL; | |
1144 | ||
1145 | TAILQ_INIT(&acks); | |
1146 | ||
1147 | if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) { | |
1148 | error("Couldn't open local file \"%s\" for reading: %s", | |
1149 | local_path, strerror(errno)); | |
1150 | return(-1); | |
1151 | } | |
1152 | if (fstat(local_fd, &sb) == -1) { | |
1153 | error("Couldn't fstat local file \"%s\": %s", | |
1154 | local_path, strerror(errno)); | |
1155 | close(local_fd); | |
1156 | return(-1); | |
1157 | } | |
1158 | if (!S_ISREG(sb.st_mode)) { | |
1159 | error("%s is not a regular file", local_path); | |
1160 | close(local_fd); | |
1161 | return(-1); | |
1162 | } | |
1163 | stat_to_attrib(&sb, &a); | |
1164 | ||
1165 | a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; | |
1166 | a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; | |
1167 | a.perm &= 0777; | |
1168 | if (!pflag) | |
1169 | a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; | |
1170 | ||
1171 | buffer_init(&msg); | |
1172 | ||
1173 | /* Send open request */ | |
1174 | id = conn->msg_id++; | |
1175 | buffer_put_char(&msg, SSH2_FXP_OPEN); | |
1176 | buffer_put_int(&msg, id); | |
1177 | buffer_put_cstring(&msg, remote_path); | |
1178 | buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC); | |
1179 | encode_attrib(&msg, &a); | |
1180 | send_msg(conn->fd_out, &msg); | |
1181 | debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); | |
1182 | ||
1183 | buffer_clear(&msg); | |
1184 | ||
1185 | handle = get_handle(conn->fd_in, id, &handle_len); | |
1186 | if (handle == NULL) { | |
1187 | close(local_fd); | |
1188 | buffer_free(&msg); | |
1189 | return -1; | |
1190 | } | |
1191 | ||
1192 | startid = ackid = id + 1; | |
1193 | data = xmalloc(conn->transfer_buflen); | |
1194 | ||
1195 | /* Read from local and write to remote */ | |
1196 | offset = 0; | |
1197 | if (showprogress) | |
1198 | start_progress_meter(local_path, sb.st_size, &offset); | |
1199 | ||
1200 | for (;;) { | |
1201 | int len; | |
1202 | ||
1203 | /* | |
1204 | * Can't use atomicio here because it returns 0 on EOF, | |
1205 | * thus losing the last block of the file. | |
1206 | * Simulate an EOF on interrupt, allowing ACKs from the | |
1207 | * server to drain. | |
1208 | */ | |
1209 | if (interrupted || status != SSH2_FX_OK) | |
1210 | len = 0; | |
1211 | else do | |
1212 | len = read(local_fd, data, conn->transfer_buflen); | |
1213 | while ((len == -1) && (errno == EINTR || errno == EAGAIN)); | |
1214 | ||
1215 | if (len == -1) | |
1216 | fatal("Couldn't read from \"%s\": %s", local_path, | |
1217 | strerror(errno)); | |
1218 | ||
1219 | if (len != 0) { | |
1220 | ack = xmalloc(sizeof(*ack)); | |
1221 | ack->id = ++id; | |
1222 | ack->offset = offset; | |
1223 | ack->len = len; | |
1224 | TAILQ_INSERT_TAIL(&acks, ack, tq); | |
1225 | ||
1226 | buffer_clear(&msg); | |
1227 | buffer_put_char(&msg, SSH2_FXP_WRITE); | |
1228 | buffer_put_int(&msg, ack->id); | |
1229 | buffer_put_string(&msg, handle, handle_len); | |
1230 | buffer_put_int64(&msg, offset); | |
1231 | buffer_put_string(&msg, data, len); | |
1232 | send_msg(conn->fd_out, &msg); | |
1233 | debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u", | |
1234 | id, (unsigned long long)offset, len); | |
1235 | } else if (TAILQ_FIRST(&acks) == NULL) | |
1236 | break; | |
1237 | ||
1238 | if (ack == NULL) | |
1239 | fatal("Unexpected ACK %u", id); | |
1240 | ||
1241 | if (id == startid || len == 0 || | |
1242 | id - ackid >= conn->num_requests) { | |
1243 | u_int r_id; | |
1244 | ||
1245 | buffer_clear(&msg); | |
1246 | get_msg(conn->fd_in, &msg); | |
1247 | type = buffer_get_char(&msg); | |
1248 | r_id = buffer_get_int(&msg); | |
1249 | ||
1250 | if (type != SSH2_FXP_STATUS) | |
1251 | fatal("Expected SSH2_FXP_STATUS(%d) packet, " | |
1252 | "got %d", SSH2_FXP_STATUS, type); | |
1253 | ||
1254 | status = buffer_get_int(&msg); | |
1255 | debug3("SSH2_FXP_STATUS %d", status); | |
1256 | ||
1257 | /* Find the request in our queue */ | |
1258 | for (ack = TAILQ_FIRST(&acks); | |
1259 | ack != NULL && ack->id != r_id; | |
1260 | ack = TAILQ_NEXT(ack, tq)) | |
1261 | ; | |
1262 | if (ack == NULL) | |
1263 | fatal("Can't find request for ID %u", r_id); | |
1264 | TAILQ_REMOVE(&acks, ack, tq); | |
1265 | debug3("In write loop, ack for %u %u bytes at %lld", | |
1266 | ack->id, ack->len, (long long)ack->offset); | |
1267 | ++ackid; | |
1268 | xfree(ack); | |
1269 | } | |
1270 | offset += len; | |
1271 | if (offset < 0) | |
1272 | fatal("%s: offset < 0", __func__); | |
1273 | } | |
1274 | buffer_free(&msg); | |
1275 | ||
1276 | if (showprogress) | |
1277 | stop_progress_meter(); | |
1278 | xfree(data); | |
1279 | ||
1280 | if (status != SSH2_FX_OK) { | |
1281 | error("Couldn't write to remote file \"%s\": %s", | |
1282 | remote_path, fx2txt(status)); | |
1283 | status = -1; | |
1284 | } | |
1285 | ||
1286 | if (close(local_fd) == -1) { | |
1287 | error("Couldn't close local file \"%s\": %s", local_path, | |
1288 | strerror(errno)); | |
1289 | status = -1; | |
1290 | } | |
1291 | ||
1292 | /* Override umask and utimes if asked */ | |
1293 | if (pflag) | |
1294 | do_fsetstat(conn, handle, handle_len, &a); | |
1295 | ||
1296 | if (do_close(conn, handle, handle_len) != SSH2_FX_OK) | |
1297 | status = -1; | |
1298 | xfree(handle); | |
1299 | ||
1300 | return status; | |
1301 | } |