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47686178 | 1 | /* $OpenBSD: sftp-client.c,v 1.81 2008/03/23 12:54:01 djm Exp $ */ |
3c0ef626 | 2 | /* |
cdd66111 | 3 | * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org> |
3c0ef626 | 4 | * |
cdd66111 | 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. | |
3c0ef626 | 8 | * |
cdd66111 | 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. | |
3c0ef626 | 16 | */ |
17 | ||
18 | /* XXX: memleaks */ | |
19 | /* XXX: signed vs unsigned */ | |
e9a17296 | 20 | /* XXX: remove all logging, only return status codes */ |
3c0ef626 | 21 | /* XXX: copy between two remote sites */ |
22 | ||
23 | #include "includes.h" | |
e9a17296 | 24 | |
9108f8d9 | 25 | #include <sys/types.h> |
26 | #include <sys/param.h> | |
41b2f314 | 27 | #include "openbsd-compat/sys-queue.h" |
9108f8d9 | 28 | #ifdef HAVE_SYS_STAT_H |
29 | # include <sys/stat.h> | |
30 | #endif | |
31 | #ifdef HAVE_SYS_TIME_H | |
32 | # include <sys/time.h> | |
33 | #endif | |
34 | #include <sys/uio.h> | |
35 | ||
36 | #include <errno.h> | |
37 | #include <fcntl.h> | |
38 | #include <signal.h> | |
39 | #include <stdarg.h> | |
40 | #include <stdio.h> | |
41 | #include <string.h> | |
42 | #include <unistd.h> | |
3c0ef626 | 43 | |
3c0ef626 | 44 | #include "xmalloc.h" |
9108f8d9 | 45 | #include "buffer.h" |
3c0ef626 | 46 | #include "log.h" |
47 | #include "atomicio.h" | |
6a9b3198 | 48 | #include "progressmeter.h" |
9108f8d9 | 49 | #include "misc.h" |
3c0ef626 | 50 | |
51 | #include "sftp.h" | |
52 | #include "sftp-common.h" | |
53 | #include "sftp-client.h" | |
54 | ||
c9f39d2c | 55 | extern volatile sig_atomic_t interrupted; |
6a9b3198 | 56 | extern int showprogress; |
57 | ||
9108f8d9 | 58 | /* Minimum amount of data to read at a time */ |
e9a17296 | 59 | #define MIN_READ_SIZE 512 |
3c0ef626 | 60 | |
e9a17296 | 61 | struct sftp_conn { |
62 | int fd_in; | |
63 | int fd_out; | |
64 | u_int transfer_buflen; | |
65 | u_int num_requests; | |
66 | u_int version; | |
67 | u_int msg_id; | |
47686178 | 68 | #define SFTP_EXT_POSIX_RENAME 1 |
69 | u_int exts; | |
e9a17296 | 70 | }; |
3c0ef626 | 71 | |
72 | static void | |
73 | send_msg(int fd, Buffer *m) | |
74 | { | |
6a9b3198 | 75 | u_char mlen[4]; |
9108f8d9 | 76 | struct iovec iov[2]; |
6a9b3198 | 77 | |
2c06c99b | 78 | if (buffer_len(m) > SFTP_MAX_MSG_LENGTH) |
6a9b3198 | 79 | fatal("Outbound message too long %u", buffer_len(m)); |
3c0ef626 | 80 | |
6a9b3198 | 81 | /* Send length first */ |
9108f8d9 | 82 | put_u32(mlen, buffer_len(m)); |
83 | iov[0].iov_base = mlen; | |
84 | iov[0].iov_len = sizeof(mlen); | |
85 | iov[1].iov_base = buffer_ptr(m); | |
86 | iov[1].iov_len = buffer_len(m); | |
3c0ef626 | 87 | |
9108f8d9 | 88 | if (atomiciov(writev, fd, iov, 2) != buffer_len(m) + sizeof(mlen)) |
3c0ef626 | 89 | fatal("Couldn't send packet: %s", strerror(errno)); |
90 | ||
6a9b3198 | 91 | buffer_clear(m); |
3c0ef626 | 92 | } |
93 | ||
94 | static void | |
95 | get_msg(int fd, Buffer *m) | |
96 | { | |
6a9b3198 | 97 | u_int msg_len; |
3c0ef626 | 98 | |
6a9b3198 | 99 | buffer_append_space(m, 4); |
665a873d | 100 | if (atomicio(read, fd, buffer_ptr(m), 4) != 4) { |
101 | if (errno == EPIPE) | |
102 | fatal("Connection closed"); | |
103 | else | |
104 | fatal("Couldn't read packet: %s", strerror(errno)); | |
105 | } | |
3c0ef626 | 106 | |
6a9b3198 | 107 | msg_len = buffer_get_int(m); |
2c06c99b | 108 | if (msg_len > SFTP_MAX_MSG_LENGTH) |
680cee3b | 109 | fatal("Received message too long %u", msg_len); |
3c0ef626 | 110 | |
6a9b3198 | 111 | buffer_append_space(m, msg_len); |
665a873d | 112 | if (atomicio(read, fd, buffer_ptr(m), msg_len) != msg_len) { |
113 | if (errno == EPIPE) | |
114 | fatal("Connection closed"); | |
115 | else | |
116 | fatal("Read packet: %s", strerror(errno)); | |
117 | } | |
3c0ef626 | 118 | } |
119 | ||
120 | static void | |
121 | send_string_request(int fd, u_int id, u_int code, char *s, | |
122 | u_int len) | |
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 | send_msg(fd, &msg); | |
680cee3b | 131 | debug3("Sent message fd %d T:%u I:%u", fd, code, id); |
3c0ef626 | 132 | buffer_free(&msg); |
133 | } | |
134 | ||
135 | static void | |
136 | send_string_attrs_request(int fd, u_int id, u_int code, char *s, | |
137 | u_int len, Attrib *a) | |
138 | { | |
139 | Buffer msg; | |
140 | ||
141 | buffer_init(&msg); | |
142 | buffer_put_char(&msg, code); | |
143 | buffer_put_int(&msg, id); | |
144 | buffer_put_string(&msg, s, len); | |
145 | encode_attrib(&msg, a); | |
146 | send_msg(fd, &msg); | |
680cee3b | 147 | debug3("Sent message fd %d T:%u I:%u", fd, code, id); |
3c0ef626 | 148 | buffer_free(&msg); |
149 | } | |
150 | ||
151 | static u_int | |
680cee3b | 152 | get_status(int fd, u_int expected_id) |
3c0ef626 | 153 | { |
154 | Buffer msg; | |
155 | u_int type, id, status; | |
156 | ||
157 | buffer_init(&msg); | |
158 | get_msg(fd, &msg); | |
159 | type = buffer_get_char(&msg); | |
160 | id = buffer_get_int(&msg); | |
161 | ||
162 | if (id != expected_id) | |
680cee3b | 163 | fatal("ID mismatch (%u != %u)", id, expected_id); |
3c0ef626 | 164 | if (type != SSH2_FXP_STATUS) |
680cee3b | 165 | fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u", |
3c0ef626 | 166 | SSH2_FXP_STATUS, type); |
167 | ||
168 | status = buffer_get_int(&msg); | |
169 | buffer_free(&msg); | |
170 | ||
680cee3b | 171 | debug3("SSH2_FXP_STATUS %u", status); |
3c0ef626 | 172 | |
173 | return(status); | |
174 | } | |
175 | ||
176 | static char * | |
177 | get_handle(int fd, u_int expected_id, u_int *len) | |
178 | { | |
179 | Buffer msg; | |
180 | u_int type, id; | |
181 | char *handle; | |
182 | ||
183 | buffer_init(&msg); | |
184 | get_msg(fd, &msg); | |
185 | type = buffer_get_char(&msg); | |
186 | id = buffer_get_int(&msg); | |
187 | ||
188 | if (id != expected_id) | |
680cee3b | 189 | fatal("ID mismatch (%u != %u)", id, expected_id); |
3c0ef626 | 190 | if (type == SSH2_FXP_STATUS) { |
191 | int status = buffer_get_int(&msg); | |
192 | ||
193 | error("Couldn't get handle: %s", fx2txt(status)); | |
996d5e62 | 194 | buffer_free(&msg); |
3c0ef626 | 195 | return(NULL); |
196 | } else if (type != SSH2_FXP_HANDLE) | |
680cee3b | 197 | fatal("Expected SSH2_FXP_HANDLE(%u) packet, got %u", |
3c0ef626 | 198 | SSH2_FXP_HANDLE, type); |
199 | ||
200 | handle = buffer_get_string(&msg, len); | |
201 | buffer_free(&msg); | |
202 | ||
203 | return(handle); | |
204 | } | |
205 | ||
206 | static Attrib * | |
207 | get_decode_stat(int fd, u_int expected_id, int quiet) | |
208 | { | |
209 | Buffer msg; | |
210 | u_int type, id; | |
211 | Attrib *a; | |
212 | ||
213 | buffer_init(&msg); | |
214 | get_msg(fd, &msg); | |
215 | ||
216 | type = buffer_get_char(&msg); | |
217 | id = buffer_get_int(&msg); | |
218 | ||
680cee3b | 219 | debug3("Received stat reply T:%u I:%u", type, id); |
3c0ef626 | 220 | if (id != expected_id) |
680cee3b | 221 | fatal("ID mismatch (%u != %u)", id, expected_id); |
3c0ef626 | 222 | if (type == SSH2_FXP_STATUS) { |
223 | int status = buffer_get_int(&msg); | |
224 | ||
225 | if (quiet) | |
226 | debug("Couldn't stat remote file: %s", fx2txt(status)); | |
227 | else | |
228 | error("Couldn't stat remote file: %s", fx2txt(status)); | |
996d5e62 | 229 | buffer_free(&msg); |
3c0ef626 | 230 | return(NULL); |
231 | } else if (type != SSH2_FXP_ATTRS) { | |
680cee3b | 232 | fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u", |
3c0ef626 | 233 | SSH2_FXP_ATTRS, type); |
234 | } | |
235 | a = decode_attrib(&msg); | |
236 | buffer_free(&msg); | |
237 | ||
238 | return(a); | |
239 | } | |
240 | ||
e9a17296 | 241 | struct sftp_conn * |
242 | do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests) | |
3c0ef626 | 243 | { |
47686178 | 244 | u_int type, exts = 0; |
680cee3b | 245 | int version; |
3c0ef626 | 246 | Buffer msg; |
e9a17296 | 247 | struct sftp_conn *ret; |
3c0ef626 | 248 | |
249 | buffer_init(&msg); | |
250 | buffer_put_char(&msg, SSH2_FXP_INIT); | |
251 | buffer_put_int(&msg, SSH2_FILEXFER_VERSION); | |
252 | send_msg(fd_out, &msg); | |
253 | ||
254 | buffer_clear(&msg); | |
255 | ||
256 | get_msg(fd_in, &msg); | |
257 | ||
258 | /* Expecting a VERSION reply */ | |
259 | if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) { | |
680cee3b | 260 | error("Invalid packet back from SSH2_FXP_INIT (type %u)", |
3c0ef626 | 261 | type); |
262 | buffer_free(&msg); | |
e9a17296 | 263 | return(NULL); |
3c0ef626 | 264 | } |
265 | version = buffer_get_int(&msg); | |
266 | ||
267 | debug2("Remote version: %d", version); | |
268 | ||
269 | /* Check for extensions */ | |
270 | while (buffer_len(&msg) > 0) { | |
271 | char *name = buffer_get_string(&msg, NULL); | |
272 | char *value = buffer_get_string(&msg, NULL); | |
273 | ||
274 | debug2("Init extension: \"%s\"", name); | |
47686178 | 275 | if (strcmp(name, "posix-rename@openssh.com") == 0) |
276 | exts |= SFTP_EXT_POSIX_RENAME; | |
3c0ef626 | 277 | xfree(name); |
278 | xfree(value); | |
279 | } | |
280 | ||
281 | buffer_free(&msg); | |
282 | ||
e9a17296 | 283 | ret = xmalloc(sizeof(*ret)); |
284 | ret->fd_in = fd_in; | |
285 | ret->fd_out = fd_out; | |
286 | ret->transfer_buflen = transfer_buflen; | |
287 | ret->num_requests = num_requests; | |
288 | ret->version = version; | |
289 | ret->msg_id = 1; | |
47686178 | 290 | ret->exts = exts; |
e9a17296 | 291 | |
292 | /* Some filexfer v.0 servers don't support large packets */ | |
293 | if (version == 0) | |
700318f3 | 294 | ret->transfer_buflen = MIN(ret->transfer_buflen, 20480); |
e9a17296 | 295 | |
296 | return(ret); | |
297 | } | |
298 | ||
299 | u_int | |
300 | sftp_proto_version(struct sftp_conn *conn) | |
301 | { | |
302 | return(conn->version); | |
3c0ef626 | 303 | } |
304 | ||
305 | int | |
e9a17296 | 306 | do_close(struct sftp_conn *conn, char *handle, u_int handle_len) |
3c0ef626 | 307 | { |
308 | u_int id, status; | |
309 | Buffer msg; | |
310 | ||
311 | buffer_init(&msg); | |
312 | ||
e9a17296 | 313 | id = conn->msg_id++; |
3c0ef626 | 314 | buffer_put_char(&msg, SSH2_FXP_CLOSE); |
315 | buffer_put_int(&msg, id); | |
316 | buffer_put_string(&msg, handle, handle_len); | |
e9a17296 | 317 | send_msg(conn->fd_out, &msg); |
680cee3b | 318 | debug3("Sent message SSH2_FXP_CLOSE I:%u", id); |
3c0ef626 | 319 | |
e9a17296 | 320 | status = get_status(conn->fd_in, id); |
3c0ef626 | 321 | if (status != SSH2_FX_OK) |
322 | error("Couldn't close file: %s", fx2txt(status)); | |
323 | ||
324 | buffer_free(&msg); | |
325 | ||
326 | return(status); | |
327 | } | |
328 | ||
329 | ||
330 | static int | |
e9a17296 | 331 | do_lsreaddir(struct sftp_conn *conn, char *path, int printflag, |
3c0ef626 | 332 | SFTP_DIRENT ***dir) |
333 | { | |
334 | Buffer msg; | |
665a873d | 335 | u_int count, type, id, handle_len, i, expected_id, ents = 0; |
3c0ef626 | 336 | char *handle; |
337 | ||
e9a17296 | 338 | id = conn->msg_id++; |
3c0ef626 | 339 | |
340 | buffer_init(&msg); | |
341 | buffer_put_char(&msg, SSH2_FXP_OPENDIR); | |
342 | buffer_put_int(&msg, id); | |
343 | buffer_put_cstring(&msg, path); | |
e9a17296 | 344 | send_msg(conn->fd_out, &msg); |
3c0ef626 | 345 | |
346 | buffer_clear(&msg); | |
347 | ||
e9a17296 | 348 | handle = get_handle(conn->fd_in, id, &handle_len); |
3c0ef626 | 349 | if (handle == NULL) |
350 | return(-1); | |
351 | ||
352 | if (dir) { | |
353 | ents = 0; | |
354 | *dir = xmalloc(sizeof(**dir)); | |
355 | (*dir)[0] = NULL; | |
356 | } | |
3c0ef626 | 357 | |
c9f39d2c | 358 | for (; !interrupted;) { |
e9a17296 | 359 | id = expected_id = conn->msg_id++; |
3c0ef626 | 360 | |
680cee3b | 361 | debug3("Sending SSH2_FXP_READDIR I:%u", id); |
3c0ef626 | 362 | |
363 | buffer_clear(&msg); | |
364 | buffer_put_char(&msg, SSH2_FXP_READDIR); | |
365 | buffer_put_int(&msg, id); | |
366 | buffer_put_string(&msg, handle, handle_len); | |
e9a17296 | 367 | send_msg(conn->fd_out, &msg); |
3c0ef626 | 368 | |
369 | buffer_clear(&msg); | |
370 | ||
e9a17296 | 371 | get_msg(conn->fd_in, &msg); |
3c0ef626 | 372 | |
373 | type = buffer_get_char(&msg); | |
374 | id = buffer_get_int(&msg); | |
375 | ||
680cee3b | 376 | debug3("Received reply T:%u I:%u", type, id); |
3c0ef626 | 377 | |
378 | if (id != expected_id) | |
680cee3b | 379 | fatal("ID mismatch (%u != %u)", id, expected_id); |
3c0ef626 | 380 | |
381 | if (type == SSH2_FXP_STATUS) { | |
382 | int status = buffer_get_int(&msg); | |
383 | ||
384 | debug3("Received SSH2_FXP_STATUS %d", status); | |
385 | ||
386 | if (status == SSH2_FX_EOF) { | |
387 | break; | |
388 | } else { | |
389 | error("Couldn't read directory: %s", | |
390 | fx2txt(status)); | |
e9a17296 | 391 | do_close(conn, handle, handle_len); |
6a9b3198 | 392 | xfree(handle); |
3c0ef626 | 393 | return(status); |
394 | } | |
395 | } else if (type != SSH2_FXP_NAME) | |
680cee3b | 396 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", |
3c0ef626 | 397 | SSH2_FXP_NAME, type); |
398 | ||
399 | count = buffer_get_int(&msg); | |
400 | if (count == 0) | |
401 | break; | |
402 | debug3("Received %d SSH2_FXP_NAME responses", count); | |
e9a17296 | 403 | for (i = 0; i < count; i++) { |
3c0ef626 | 404 | char *filename, *longname; |
405 | Attrib *a; | |
406 | ||
407 | filename = buffer_get_string(&msg, NULL); | |
408 | longname = buffer_get_string(&msg, NULL); | |
409 | a = decode_attrib(&msg); | |
410 | ||
411 | if (printflag) | |
412 | printf("%s\n", longname); | |
413 | ||
414 | if (dir) { | |
9108f8d9 | 415 | *dir = xrealloc(*dir, ents + 2, sizeof(**dir)); |
3c0ef626 | 416 | (*dir)[ents] = xmalloc(sizeof(***dir)); |
417 | (*dir)[ents]->filename = xstrdup(filename); | |
418 | (*dir)[ents]->longname = xstrdup(longname); | |
419 | memcpy(&(*dir)[ents]->a, a, sizeof(*a)); | |
420 | (*dir)[++ents] = NULL; | |
421 | } | |
422 | ||
423 | xfree(filename); | |
424 | xfree(longname); | |
425 | } | |
426 | } | |
427 | ||
428 | buffer_free(&msg); | |
e9a17296 | 429 | do_close(conn, handle, handle_len); |
3c0ef626 | 430 | xfree(handle); |
431 | ||
c9f39d2c | 432 | /* Don't return partial matches on interrupt */ |
433 | if (interrupted && dir != NULL && *dir != NULL) { | |
434 | free_sftp_dirents(*dir); | |
435 | *dir = xmalloc(sizeof(**dir)); | |
436 | **dir = NULL; | |
437 | } | |
438 | ||
3c0ef626 | 439 | return(0); |
440 | } | |
441 | ||
3c0ef626 | 442 | int |
e9a17296 | 443 | do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir) |
3c0ef626 | 444 | { |
e9a17296 | 445 | return(do_lsreaddir(conn, path, 0, dir)); |
3c0ef626 | 446 | } |
447 | ||
448 | void free_sftp_dirents(SFTP_DIRENT **s) | |
449 | { | |
450 | int i; | |
e9a17296 | 451 | |
452 | for (i = 0; s[i]; i++) { | |
3c0ef626 | 453 | xfree(s[i]->filename); |
454 | xfree(s[i]->longname); | |
455 | xfree(s[i]); | |
456 | } | |
457 | xfree(s); | |
458 | } | |
459 | ||
460 | int | |
e9a17296 | 461 | do_rm(struct sftp_conn *conn, char *path) |
3c0ef626 | 462 | { |
463 | u_int status, id; | |
464 | ||
465 | debug2("Sending SSH2_FXP_REMOVE \"%s\"", path); | |
466 | ||
e9a17296 | 467 | id = conn->msg_id++; |
700318f3 | 468 | send_string_request(conn->fd_out, id, SSH2_FXP_REMOVE, path, |
e9a17296 | 469 | strlen(path)); |
470 | status = get_status(conn->fd_in, id); | |
3c0ef626 | 471 | if (status != SSH2_FX_OK) |
472 | error("Couldn't delete file: %s", fx2txt(status)); | |
473 | return(status); | |
474 | } | |
475 | ||
476 | int | |
e9a17296 | 477 | do_mkdir(struct sftp_conn *conn, char *path, Attrib *a) |
3c0ef626 | 478 | { |
479 | u_int status, id; | |
480 | ||
e9a17296 | 481 | id = conn->msg_id++; |
482 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_MKDIR, path, | |
3c0ef626 | 483 | strlen(path), a); |
484 | ||
e9a17296 | 485 | status = get_status(conn->fd_in, id); |
3c0ef626 | 486 | if (status != SSH2_FX_OK) |
487 | error("Couldn't create directory: %s", fx2txt(status)); | |
488 | ||
489 | return(status); | |
490 | } | |
491 | ||
492 | int | |
e9a17296 | 493 | do_rmdir(struct sftp_conn *conn, char *path) |
3c0ef626 | 494 | { |
495 | u_int status, id; | |
496 | ||
e9a17296 | 497 | id = conn->msg_id++; |
498 | send_string_request(conn->fd_out, id, SSH2_FXP_RMDIR, path, | |
499 | strlen(path)); | |
3c0ef626 | 500 | |
e9a17296 | 501 | status = get_status(conn->fd_in, id); |
3c0ef626 | 502 | if (status != SSH2_FX_OK) |
503 | error("Couldn't remove directory: %s", fx2txt(status)); | |
504 | ||
505 | return(status); | |
506 | } | |
507 | ||
508 | Attrib * | |
e9a17296 | 509 | do_stat(struct sftp_conn *conn, char *path, int quiet) |
3c0ef626 | 510 | { |
511 | u_int id; | |
512 | ||
e9a17296 | 513 | id = conn->msg_id++; |
514 | ||
700318f3 | 515 | send_string_request(conn->fd_out, id, |
516 | conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT, | |
e9a17296 | 517 | path, strlen(path)); |
518 | ||
519 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
3c0ef626 | 520 | } |
521 | ||
522 | Attrib * | |
e9a17296 | 523 | do_lstat(struct sftp_conn *conn, char *path, int quiet) |
3c0ef626 | 524 | { |
525 | u_int id; | |
526 | ||
e9a17296 | 527 | if (conn->version == 0) { |
528 | if (quiet) | |
529 | debug("Server version does not support lstat operation"); | |
530 | else | |
0fff78ff | 531 | logit("Server version does not support lstat operation"); |
700318f3 | 532 | return(do_stat(conn, path, quiet)); |
e9a17296 | 533 | } |
534 | ||
535 | id = conn->msg_id++; | |
536 | send_string_request(conn->fd_out, id, SSH2_FXP_LSTAT, path, | |
537 | strlen(path)); | |
538 | ||
539 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
3c0ef626 | 540 | } |
541 | ||
47686178 | 542 | #ifdef notyet |
3c0ef626 | 543 | Attrib * |
e9a17296 | 544 | do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet) |
3c0ef626 | 545 | { |
546 | u_int id; | |
547 | ||
e9a17296 | 548 | id = conn->msg_id++; |
549 | send_string_request(conn->fd_out, id, SSH2_FXP_FSTAT, handle, | |
550 | handle_len); | |
551 | ||
552 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
3c0ef626 | 553 | } |
47686178 | 554 | #endif |
3c0ef626 | 555 | |
556 | int | |
e9a17296 | 557 | do_setstat(struct sftp_conn *conn, char *path, Attrib *a) |
3c0ef626 | 558 | { |
559 | u_int status, id; | |
560 | ||
e9a17296 | 561 | id = conn->msg_id++; |
562 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_SETSTAT, path, | |
3c0ef626 | 563 | strlen(path), a); |
564 | ||
e9a17296 | 565 | status = get_status(conn->fd_in, id); |
3c0ef626 | 566 | if (status != SSH2_FX_OK) |
567 | error("Couldn't setstat on \"%s\": %s", path, | |
568 | fx2txt(status)); | |
569 | ||
570 | return(status); | |
571 | } | |
572 | ||
573 | int | |
e9a17296 | 574 | do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len, |
3c0ef626 | 575 | Attrib *a) |
576 | { | |
577 | u_int status, id; | |
578 | ||
e9a17296 | 579 | id = conn->msg_id++; |
580 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_FSETSTAT, handle, | |
3c0ef626 | 581 | handle_len, a); |
582 | ||
e9a17296 | 583 | status = get_status(conn->fd_in, id); |
3c0ef626 | 584 | if (status != SSH2_FX_OK) |
585 | error("Couldn't fsetstat: %s", fx2txt(status)); | |
586 | ||
587 | return(status); | |
588 | } | |
589 | ||
590 | char * | |
e9a17296 | 591 | do_realpath(struct sftp_conn *conn, char *path) |
3c0ef626 | 592 | { |
593 | Buffer msg; | |
594 | u_int type, expected_id, count, id; | |
595 | char *filename, *longname; | |
596 | Attrib *a; | |
597 | ||
e9a17296 | 598 | expected_id = id = conn->msg_id++; |
599 | send_string_request(conn->fd_out, id, SSH2_FXP_REALPATH, path, | |
600 | strlen(path)); | |
3c0ef626 | 601 | |
602 | buffer_init(&msg); | |
603 | ||
e9a17296 | 604 | get_msg(conn->fd_in, &msg); |
3c0ef626 | 605 | type = buffer_get_char(&msg); |
606 | id = buffer_get_int(&msg); | |
607 | ||
608 | if (id != expected_id) | |
680cee3b | 609 | fatal("ID mismatch (%u != %u)", id, expected_id); |
3c0ef626 | 610 | |
611 | if (type == SSH2_FXP_STATUS) { | |
612 | u_int status = buffer_get_int(&msg); | |
613 | ||
614 | error("Couldn't canonicalise: %s", fx2txt(status)); | |
615 | return(NULL); | |
616 | } else if (type != SSH2_FXP_NAME) | |
680cee3b | 617 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", |
3c0ef626 | 618 | SSH2_FXP_NAME, type); |
619 | ||
620 | count = buffer_get_int(&msg); | |
621 | if (count != 1) | |
622 | fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count); | |
623 | ||
624 | filename = buffer_get_string(&msg, NULL); | |
625 | longname = buffer_get_string(&msg, NULL); | |
626 | a = decode_attrib(&msg); | |
627 | ||
628 | debug3("SSH_FXP_REALPATH %s -> %s", path, filename); | |
629 | ||
630 | xfree(longname); | |
631 | ||
632 | buffer_free(&msg); | |
633 | ||
634 | return(filename); | |
635 | } | |
636 | ||
637 | int | |
e9a17296 | 638 | do_rename(struct sftp_conn *conn, char *oldpath, char *newpath) |
3c0ef626 | 639 | { |
640 | Buffer msg; | |
641 | u_int status, id; | |
642 | ||
643 | buffer_init(&msg); | |
644 | ||
645 | /* Send rename request */ | |
e9a17296 | 646 | id = conn->msg_id++; |
47686178 | 647 | if ((conn->exts & SFTP_EXT_POSIX_RENAME)) { |
648 | buffer_put_char(&msg, SSH2_FXP_EXTENDED); | |
649 | buffer_put_int(&msg, id); | |
650 | buffer_put_cstring(&msg, "posix-rename@openssh.com"); | |
651 | } else { | |
652 | buffer_put_char(&msg, SSH2_FXP_RENAME); | |
653 | buffer_put_int(&msg, id); | |
654 | } | |
3c0ef626 | 655 | buffer_put_cstring(&msg, oldpath); |
656 | buffer_put_cstring(&msg, newpath); | |
e9a17296 | 657 | send_msg(conn->fd_out, &msg); |
47686178 | 658 | debug3("Sent message %s \"%s\" -> \"%s\"", |
659 | (conn->exts & SFTP_EXT_POSIX_RENAME) ? "posix-rename@openssh.com" : | |
660 | "SSH2_FXP_RENAME", oldpath, newpath); | |
3c0ef626 | 661 | buffer_free(&msg); |
662 | ||
e9a17296 | 663 | status = get_status(conn->fd_in, id); |
3c0ef626 | 664 | if (status != SSH2_FX_OK) |
e9a17296 | 665 | error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, |
666 | newpath, fx2txt(status)); | |
3c0ef626 | 667 | |
668 | return(status); | |
669 | } | |
670 | ||
671 | int | |
e9a17296 | 672 | do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath) |
3c0ef626 | 673 | { |
674 | Buffer msg; | |
675 | u_int status, id; | |
676 | ||
e9a17296 | 677 | if (conn->version < 3) { |
678 | error("This server does not support the symlink operation"); | |
679 | return(SSH2_FX_OP_UNSUPPORTED); | |
680 | } | |
681 | ||
3c0ef626 | 682 | buffer_init(&msg); |
683 | ||
c9f39d2c | 684 | /* Send symlink request */ |
e9a17296 | 685 | id = conn->msg_id++; |
3c0ef626 | 686 | buffer_put_char(&msg, SSH2_FXP_SYMLINK); |
687 | buffer_put_int(&msg, id); | |
688 | buffer_put_cstring(&msg, oldpath); | |
689 | buffer_put_cstring(&msg, newpath); | |
e9a17296 | 690 | send_msg(conn->fd_out, &msg); |
3c0ef626 | 691 | debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath, |
692 | newpath); | |
693 | buffer_free(&msg); | |
694 | ||
e9a17296 | 695 | status = get_status(conn->fd_in, id); |
3c0ef626 | 696 | if (status != SSH2_FX_OK) |
6a9b3198 | 697 | error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath, |
e9a17296 | 698 | newpath, fx2txt(status)); |
3c0ef626 | 699 | |
700 | return(status); | |
701 | } | |
702 | ||
47686178 | 703 | #ifdef notyet |
3c0ef626 | 704 | char * |
e9a17296 | 705 | do_readlink(struct sftp_conn *conn, char *path) |
3c0ef626 | 706 | { |
707 | Buffer msg; | |
708 | u_int type, expected_id, count, id; | |
709 | char *filename, *longname; | |
710 | Attrib *a; | |
711 | ||
e9a17296 | 712 | expected_id = id = conn->msg_id++; |
713 | send_string_request(conn->fd_out, id, SSH2_FXP_READLINK, path, | |
714 | strlen(path)); | |
3c0ef626 | 715 | |
716 | buffer_init(&msg); | |
717 | ||
e9a17296 | 718 | get_msg(conn->fd_in, &msg); |
3c0ef626 | 719 | type = buffer_get_char(&msg); |
720 | id = buffer_get_int(&msg); | |
721 | ||
722 | if (id != expected_id) | |
680cee3b | 723 | fatal("ID mismatch (%u != %u)", id, expected_id); |
3c0ef626 | 724 | |
725 | if (type == SSH2_FXP_STATUS) { | |
726 | u_int status = buffer_get_int(&msg); | |
727 | ||
728 | error("Couldn't readlink: %s", fx2txt(status)); | |
729 | return(NULL); | |
730 | } else if (type != SSH2_FXP_NAME) | |
680cee3b | 731 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", |
3c0ef626 | 732 | SSH2_FXP_NAME, type); |
733 | ||
734 | count = buffer_get_int(&msg); | |
735 | if (count != 1) | |
736 | fatal("Got multiple names (%d) from SSH_FXP_READLINK", count); | |
737 | ||
738 | filename = buffer_get_string(&msg, NULL); | |
739 | longname = buffer_get_string(&msg, NULL); | |
740 | a = decode_attrib(&msg); | |
741 | ||
742 | debug3("SSH_FXP_READLINK %s -> %s", path, filename); | |
743 | ||
744 | xfree(longname); | |
745 | ||
746 | buffer_free(&msg); | |
747 | ||
748 | return(filename); | |
749 | } | |
47686178 | 750 | #endif |
3c0ef626 | 751 | |
e9a17296 | 752 | static void |
753 | send_read_request(int fd_out, u_int id, u_int64_t offset, u_int len, | |
754 | char *handle, u_int handle_len) | |
755 | { | |
756 | Buffer msg; | |
700318f3 | 757 | |
e9a17296 | 758 | buffer_init(&msg); |
759 | buffer_clear(&msg); | |
760 | buffer_put_char(&msg, SSH2_FXP_READ); | |
761 | buffer_put_int(&msg, id); | |
762 | buffer_put_string(&msg, handle, handle_len); | |
763 | buffer_put_int64(&msg, offset); | |
764 | buffer_put_int(&msg, len); | |
765 | send_msg(fd_out, &msg); | |
766 | buffer_free(&msg); | |
700318f3 | 767 | } |
e9a17296 | 768 | |
3c0ef626 | 769 | int |
e9a17296 | 770 | do_download(struct sftp_conn *conn, char *remote_path, char *local_path, |
3c0ef626 | 771 | int pflag) |
772 | { | |
3c0ef626 | 773 | Attrib junk, *a; |
e9a17296 | 774 | Buffer msg; |
775 | char *handle; | |
665a873d | 776 | int local_fd, status = 0, write_error; |
e9a17296 | 777 | int read_error, write_errno; |
778 | u_int64_t offset, size; | |
665a873d | 779 | u_int handle_len, mode, type, id, buflen, num_req, max_req; |
6a9b3198 | 780 | off_t progress_counter; |
e9a17296 | 781 | struct request { |
782 | u_int id; | |
783 | u_int len; | |
784 | u_int64_t offset; | |
700318f3 | 785 | TAILQ_ENTRY(request) tq; |
e9a17296 | 786 | }; |
787 | TAILQ_HEAD(reqhead, request) requests; | |
788 | struct request *req; | |
3c0ef626 | 789 | |
e9a17296 | 790 | TAILQ_INIT(&requests); |
791 | ||
792 | a = do_stat(conn, remote_path, 0); | |
3c0ef626 | 793 | if (a == NULL) |
794 | return(-1); | |
795 | ||
796 | /* XXX: should we preserve set[ug]id? */ | |
797 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) | |
6a9b3198 | 798 | mode = a->perm & 0777; |
3c0ef626 | 799 | else |
800 | mode = 0666; | |
801 | ||
802 | if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) && | |
6a9b3198 | 803 | (!S_ISREG(a->perm))) { |
804 | error("Cannot download non-regular file: %s", remote_path); | |
3c0ef626 | 805 | return(-1); |
806 | } | |
807 | ||
e9a17296 | 808 | if (a->flags & SSH2_FILEXFER_ATTR_SIZE) |
809 | size = a->size; | |
810 | else | |
811 | size = 0; | |
3c0ef626 | 812 | |
e9a17296 | 813 | buflen = conn->transfer_buflen; |
3c0ef626 | 814 | buffer_init(&msg); |
815 | ||
816 | /* Send open request */ | |
e9a17296 | 817 | id = conn->msg_id++; |
3c0ef626 | 818 | buffer_put_char(&msg, SSH2_FXP_OPEN); |
819 | buffer_put_int(&msg, id); | |
820 | buffer_put_cstring(&msg, remote_path); | |
821 | buffer_put_int(&msg, SSH2_FXF_READ); | |
822 | attrib_clear(&junk); /* Send empty attributes */ | |
823 | encode_attrib(&msg, &junk); | |
e9a17296 | 824 | send_msg(conn->fd_out, &msg); |
680cee3b | 825 | debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); |
3c0ef626 | 826 | |
e9a17296 | 827 | handle = get_handle(conn->fd_in, id, &handle_len); |
3c0ef626 | 828 | if (handle == NULL) { |
829 | buffer_free(&msg); | |
e9a17296 | 830 | return(-1); |
831 | } | |
832 | ||
cdd66111 | 833 | local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC, |
6a9b3198 | 834 | mode | S_IWRITE); |
e9a17296 | 835 | if (local_fd == -1) { |
836 | error("Couldn't open local file \"%s\" for writing: %s", | |
837 | local_path, strerror(errno)); | |
47686178 | 838 | do_close(conn, handle, handle_len); |
e9a17296 | 839 | buffer_free(&msg); |
840 | xfree(handle); | |
3c0ef626 | 841 | return(-1); |
842 | } | |
843 | ||
844 | /* Read from remote and write to local */ | |
e9a17296 | 845 | write_error = read_error = write_errno = num_req = offset = 0; |
846 | max_req = 1; | |
6a9b3198 | 847 | progress_counter = 0; |
848 | ||
99be0775 | 849 | if (showprogress && size != 0) |
850 | start_progress_meter(remote_path, size, &progress_counter); | |
6a9b3198 | 851 | |
e9a17296 | 852 | while (num_req > 0 || max_req > 0) { |
3c0ef626 | 853 | char *data; |
e9a17296 | 854 | u_int len; |
3c0ef626 | 855 | |
c9f39d2c | 856 | /* |
857 | * Simulate EOF on interrupt: stop sending new requests and | |
858 | * allow outstanding requests to drain gracefully | |
859 | */ | |
860 | if (interrupted) { | |
861 | if (num_req == 0) /* If we haven't started yet... */ | |
862 | break; | |
863 | max_req = 0; | |
864 | } | |
865 | ||
e9a17296 | 866 | /* Send some more requests */ |
867 | while (num_req < max_req) { | |
700318f3 | 868 | debug3("Request range %llu -> %llu (%d/%d)", |
869 | (unsigned long long)offset, | |
870 | (unsigned long long)offset + buflen - 1, | |
871 | num_req, max_req); | |
e9a17296 | 872 | req = xmalloc(sizeof(*req)); |
873 | req->id = conn->msg_id++; | |
874 | req->len = buflen; | |
875 | req->offset = offset; | |
876 | offset += buflen; | |
877 | num_req++; | |
878 | TAILQ_INSERT_TAIL(&requests, req, tq); | |
700318f3 | 879 | send_read_request(conn->fd_out, req->id, req->offset, |
e9a17296 | 880 | req->len, handle, handle_len); |
881 | } | |
3c0ef626 | 882 | |
883 | buffer_clear(&msg); | |
e9a17296 | 884 | get_msg(conn->fd_in, &msg); |
3c0ef626 | 885 | type = buffer_get_char(&msg); |
886 | id = buffer_get_int(&msg); | |
680cee3b | 887 | debug3("Received reply T:%u I:%u R:%d", type, id, max_req); |
e9a17296 | 888 | |
889 | /* Find the request in our queue */ | |
dec6d9fe | 890 | for (req = TAILQ_FIRST(&requests); |
e9a17296 | 891 | req != NULL && req->id != id; |
892 | req = TAILQ_NEXT(req, tq)) | |
893 | ; | |
894 | if (req == NULL) | |
895 | fatal("Unexpected reply %u", id); | |
896 | ||
897 | switch (type) { | |
898 | case SSH2_FXP_STATUS: | |
3c0ef626 | 899 | status = buffer_get_int(&msg); |
e9a17296 | 900 | if (status != SSH2_FX_EOF) |
901 | read_error = 1; | |
902 | max_req = 0; | |
903 | TAILQ_REMOVE(&requests, req, tq); | |
904 | xfree(req); | |
905 | num_req--; | |
906 | break; | |
907 | case SSH2_FXP_DATA: | |
908 | data = buffer_get_string(&msg, &len); | |
700318f3 | 909 | debug3("Received data %llu -> %llu", |
910 | (unsigned long long)req->offset, | |
911 | (unsigned long long)req->offset + len - 1); | |
e9a17296 | 912 | if (len > req->len) |
913 | fatal("Received more data than asked for " | |
6a9b3198 | 914 | "%u > %u", len, req->len); |
e9a17296 | 915 | if ((lseek(local_fd, req->offset, SEEK_SET) == -1 || |
0fff78ff | 916 | atomicio(vwrite, local_fd, data, len) != len) && |
e9a17296 | 917 | !write_error) { |
918 | write_errno = errno; | |
919 | write_error = 1; | |
920 | max_req = 0; | |
921 | } | |
6a9b3198 | 922 | progress_counter += len; |
e9a17296 | 923 | xfree(data); |
3c0ef626 | 924 | |
e9a17296 | 925 | if (len == req->len) { |
926 | TAILQ_REMOVE(&requests, req, tq); | |
927 | xfree(req); | |
928 | num_req--; | |
929 | } else { | |
930 | /* Resend the request for the missing data */ | |
931 | debug3("Short data block, re-requesting " | |
700318f3 | 932 | "%llu -> %llu (%2d)", |
933 | (unsigned long long)req->offset + len, | |
934 | (unsigned long long)req->offset + | |
935 | req->len - 1, num_req); | |
e9a17296 | 936 | req->id = conn->msg_id++; |
937 | req->len -= len; | |
938 | req->offset += len; | |
700318f3 | 939 | send_read_request(conn->fd_out, req->id, |
e9a17296 | 940 | req->offset, req->len, handle, handle_len); |
941 | /* Reduce the request size */ | |
942 | if (len < buflen) | |
943 | buflen = MAX(MIN_READ_SIZE, len); | |
3c0ef626 | 944 | } |
e9a17296 | 945 | if (max_req > 0) { /* max_req = 0 iff EOF received */ |
946 | if (size > 0 && offset > size) { | |
947 | /* Only one request at a time | |
948 | * after the expected EOF */ | |
949 | debug3("Finish at %llu (%2d)", | |
700318f3 | 950 | (unsigned long long)offset, |
951 | num_req); | |
e9a17296 | 952 | max_req = 1; |
c9f39d2c | 953 | } else if (max_req <= conn->num_requests) { |
e9a17296 | 954 | ++max_req; |
955 | } | |
956 | } | |
957 | break; | |
958 | default: | |
680cee3b | 959 | fatal("Expected SSH2_FXP_DATA(%u) packet, got %u", |
3c0ef626 | 960 | SSH2_FXP_DATA, type); |
961 | } | |
3c0ef626 | 962 | } |
3c0ef626 | 963 | |
6a9b3198 | 964 | if (showprogress && size) |
965 | stop_progress_meter(); | |
966 | ||
e9a17296 | 967 | /* Sanity check */ |
968 | if (TAILQ_FIRST(&requests) != NULL) | |
969 | fatal("Transfer complete, but requests still in queue"); | |
970 | ||
971 | if (read_error) { | |
700318f3 | 972 | error("Couldn't read from remote file \"%s\" : %s", |
e9a17296 | 973 | remote_path, fx2txt(status)); |
974 | do_close(conn, handle, handle_len); | |
975 | } else if (write_error) { | |
976 | error("Couldn't write to \"%s\": %s", local_path, | |
977 | strerror(write_errno)); | |
978 | status = -1; | |
979 | do_close(conn, handle, handle_len); | |
980 | } else { | |
981 | status = do_close(conn, handle, handle_len); | |
982 | ||
983 | /* Override umask and utimes if asked */ | |
3c0ef626 | 984 | #ifdef HAVE_FCHMOD |
e9a17296 | 985 | if (pflag && fchmod(local_fd, mode) == -1) |
cdd66111 | 986 | #else |
e9a17296 | 987 | if (pflag && chmod(local_path, mode) == -1) |
3c0ef626 | 988 | #endif /* HAVE_FCHMOD */ |
e9a17296 | 989 | error("Couldn't set mode on \"%s\": %s", local_path, |
6a9b3198 | 990 | strerror(errno)); |
e9a17296 | 991 | if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) { |
992 | struct timeval tv[2]; | |
993 | tv[0].tv_sec = a->atime; | |
994 | tv[1].tv_sec = a->mtime; | |
995 | tv[0].tv_usec = tv[1].tv_usec = 0; | |
996 | if (utimes(local_path, tv) == -1) | |
997 | error("Can't set times on \"%s\": %s", | |
6a9b3198 | 998 | local_path, strerror(errno)); |
e9a17296 | 999 | } |
3c0ef626 | 1000 | } |
3c0ef626 | 1001 | close(local_fd); |
1002 | buffer_free(&msg); | |
1003 | xfree(handle); | |
e9a17296 | 1004 | |
1005 | return(status); | |
3c0ef626 | 1006 | } |
1007 | ||
1008 | int | |
e9a17296 | 1009 | do_upload(struct sftp_conn *conn, char *local_path, char *remote_path, |
3c0ef626 | 1010 | int pflag) |
1011 | { | |
47686178 | 1012 | int local_fd; |
1013 | int status = SSH2_FX_OK; | |
e9a17296 | 1014 | u_int handle_len, id, type; |
47686178 | 1015 | off_t offset; |
e9a17296 | 1016 | char *handle, *data; |
3c0ef626 | 1017 | Buffer msg; |
1018 | struct stat sb; | |
1019 | Attrib a; | |
e9a17296 | 1020 | u_int32_t startid; |
1021 | u_int32_t ackid; | |
1022 | struct outstanding_ack { | |
1023 | u_int id; | |
1024 | u_int len; | |
47686178 | 1025 | off_t offset; |
700318f3 | 1026 | TAILQ_ENTRY(outstanding_ack) tq; |
e9a17296 | 1027 | }; |
1028 | TAILQ_HEAD(ackhead, outstanding_ack) acks; | |
c9f39d2c | 1029 | struct outstanding_ack *ack = NULL; |
e9a17296 | 1030 | |
1031 | TAILQ_INIT(&acks); | |
3c0ef626 | 1032 | |
1033 | if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) { | |
1034 | error("Couldn't open local file \"%s\" for reading: %s", | |
1035 | local_path, strerror(errno)); | |
1036 | return(-1); | |
1037 | } | |
1038 | if (fstat(local_fd, &sb) == -1) { | |
1039 | error("Couldn't fstat local file \"%s\": %s", | |
1040 | local_path, strerror(errno)); | |
1041 | close(local_fd); | |
1042 | return(-1); | |
1043 | } | |
6a9b3198 | 1044 | if (!S_ISREG(sb.st_mode)) { |
1045 | error("%s is not a regular file", local_path); | |
1046 | close(local_fd); | |
1047 | return(-1); | |
1048 | } | |
3c0ef626 | 1049 | stat_to_attrib(&sb, &a); |
1050 | ||
1051 | a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; | |
1052 | a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; | |
1053 | a.perm &= 0777; | |
1054 | if (!pflag) | |
1055 | a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; | |
1056 | ||
1057 | buffer_init(&msg); | |
1058 | ||
1059 | /* Send open request */ | |
e9a17296 | 1060 | id = conn->msg_id++; |
3c0ef626 | 1061 | buffer_put_char(&msg, SSH2_FXP_OPEN); |
1062 | buffer_put_int(&msg, id); | |
1063 | buffer_put_cstring(&msg, remote_path); | |
1064 | buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC); | |
1065 | encode_attrib(&msg, &a); | |
e9a17296 | 1066 | send_msg(conn->fd_out, &msg); |
680cee3b | 1067 | debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); |
3c0ef626 | 1068 | |
1069 | buffer_clear(&msg); | |
1070 | ||
e9a17296 | 1071 | handle = get_handle(conn->fd_in, id, &handle_len); |
3c0ef626 | 1072 | if (handle == NULL) { |
1073 | close(local_fd); | |
1074 | buffer_free(&msg); | |
47686178 | 1075 | return -1; |
3c0ef626 | 1076 | } |
1077 | ||
e9a17296 | 1078 | startid = ackid = id + 1; |
1079 | data = xmalloc(conn->transfer_buflen); | |
1080 | ||
3c0ef626 | 1081 | /* Read from local and write to remote */ |
1082 | offset = 0; | |
6a9b3198 | 1083 | if (showprogress) |
1084 | start_progress_meter(local_path, sb.st_size, &offset); | |
6a9b3198 | 1085 | |
e9a17296 | 1086 | for (;;) { |
3c0ef626 | 1087 | int len; |
3c0ef626 | 1088 | |
1089 | /* | |
c9f39d2c | 1090 | * Can't use atomicio here because it returns 0 on EOF, |
1091 | * thus losing the last block of the file. | |
1092 | * Simulate an EOF on interrupt, allowing ACKs from the | |
1093 | * server to drain. | |
3c0ef626 | 1094 | */ |
47686178 | 1095 | if (interrupted || status != SSH2_FX_OK) |
c9f39d2c | 1096 | len = 0; |
1097 | else do | |
e9a17296 | 1098 | len = read(local_fd, data, conn->transfer_buflen); |
3c0ef626 | 1099 | while ((len == -1) && (errno == EINTR || errno == EAGAIN)); |
1100 | ||
1101 | if (len == -1) | |
1102 | fatal("Couldn't read from \"%s\": %s", local_path, | |
1103 | strerror(errno)); | |
e9a17296 | 1104 | |
1105 | if (len != 0) { | |
1106 | ack = xmalloc(sizeof(*ack)); | |
1107 | ack->id = ++id; | |
1108 | ack->offset = offset; | |
1109 | ack->len = len; | |
1110 | TAILQ_INSERT_TAIL(&acks, ack, tq); | |
1111 | ||
1112 | buffer_clear(&msg); | |
1113 | buffer_put_char(&msg, SSH2_FXP_WRITE); | |
1114 | buffer_put_int(&msg, ack->id); | |
1115 | buffer_put_string(&msg, handle, handle_len); | |
1116 | buffer_put_int64(&msg, offset); | |
1117 | buffer_put_string(&msg, data, len); | |
1118 | send_msg(conn->fd_out, &msg); | |
680cee3b | 1119 | debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u", |
6a9b3198 | 1120 | id, (unsigned long long)offset, len); |
e9a17296 | 1121 | } else if (TAILQ_FIRST(&acks) == NULL) |
3c0ef626 | 1122 | break; |
1123 | ||
e9a17296 | 1124 | if (ack == NULL) |
1125 | fatal("Unexpected ACK %u", id); | |
1126 | ||
700318f3 | 1127 | if (id == startid || len == 0 || |
e9a17296 | 1128 | id - ackid >= conn->num_requests) { |
f5799ae1 | 1129 | u_int r_id; |
700318f3 | 1130 | |
e9a17296 | 1131 | buffer_clear(&msg); |
1132 | get_msg(conn->fd_in, &msg); | |
1133 | type = buffer_get_char(&msg); | |
700318f3 | 1134 | r_id = buffer_get_int(&msg); |
3c0ef626 | 1135 | |
e9a17296 | 1136 | if (type != SSH2_FXP_STATUS) |
1137 | fatal("Expected SSH2_FXP_STATUS(%d) packet, " | |
1138 | "got %d", SSH2_FXP_STATUS, type); | |
1139 | ||
1140 | status = buffer_get_int(&msg); | |
1141 | debug3("SSH2_FXP_STATUS %d", status); | |
1142 | ||
1143 | /* Find the request in our queue */ | |
dec6d9fe | 1144 | for (ack = TAILQ_FIRST(&acks); |
700318f3 | 1145 | ack != NULL && ack->id != r_id; |
e9a17296 | 1146 | ack = TAILQ_NEXT(ack, tq)) |
1147 | ; | |
1148 | if (ack == NULL) | |
680cee3b | 1149 | fatal("Can't find request for ID %u", r_id); |
e9a17296 | 1150 | TAILQ_REMOVE(&acks, ack, tq); |
47686178 | 1151 | debug3("In write loop, ack for %u %u bytes at %lld", |
1152 | ack->id, ack->len, (long long)ack->offset); | |
e9a17296 | 1153 | ++ackid; |
41b2f314 | 1154 | xfree(ack); |
e9a17296 | 1155 | } |
3c0ef626 | 1156 | offset += len; |
47686178 | 1157 | if (offset < 0) |
1158 | fatal("%s: offset < 0", __func__); | |
3c0ef626 | 1159 | } |
47686178 | 1160 | buffer_free(&msg); |
1161 | ||
6a9b3198 | 1162 | if (showprogress) |
1163 | stop_progress_meter(); | |
e9a17296 | 1164 | xfree(data); |
3c0ef626 | 1165 | |
47686178 | 1166 | if (status != SSH2_FX_OK) { |
1167 | error("Couldn't write to remote file \"%s\": %s", | |
1168 | remote_path, fx2txt(status)); | |
1169 | status = -1; | |
1170 | } | |
1171 | ||
3c0ef626 | 1172 | if (close(local_fd) == -1) { |
1173 | error("Couldn't close local file \"%s\": %s", local_path, | |
1174 | strerror(errno)); | |
3c0ef626 | 1175 | status = -1; |
3c0ef626 | 1176 | } |
1177 | ||
1178 | /* Override umask and utimes if asked */ | |
1179 | if (pflag) | |
e9a17296 | 1180 | do_fsetstat(conn, handle, handle_len, &a); |
3c0ef626 | 1181 | |
47686178 | 1182 | if (do_close(conn, handle, handle_len) != SSH2_FX_OK) |
1183 | status = -1; | |
3c0ef626 | 1184 | xfree(handle); |
47686178 | 1185 | |
1186 | return status; | |
3c0ef626 | 1187 | } |