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1 | /* $OpenBSD: sftp-client.c,v 1.90 2009/10/11 10:41:26 dtucker 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 <dirent.h> | |
40 | #include <errno.h> | |
41 | #include <fcntl.h> | |
42 | #include <signal.h> | |
43 | #include <stdarg.h> | |
44 | #include <stdio.h> | |
45 | #include <string.h> | |
46 | #include <unistd.h> | |
47 | ||
48 | #include "xmalloc.h" | |
49 | #include "buffer.h" | |
50 | #include "log.h" | |
51 | #include "atomicio.h" | |
52 | #include "progressmeter.h" | |
53 | #include "misc.h" | |
54 | ||
55 | #include "sftp.h" | |
56 | #include "sftp-common.h" | |
57 | #include "sftp-client.h" | |
58 | ||
59 | extern volatile sig_atomic_t interrupted; | |
60 | extern int showprogress; | |
61 | ||
62 | /* Minimum amount of data to read at a time */ | |
63 | #define MIN_READ_SIZE 512 | |
64 | ||
65 | /* Maximum depth to descend in directory trees */ | |
66 | #define MAX_DIR_DEPTH 64 | |
67 | ||
68 | struct sftp_conn { | |
69 | int fd_in; | |
70 | int fd_out; | |
71 | u_int transfer_buflen; | |
72 | u_int num_requests; | |
73 | u_int version; | |
74 | u_int msg_id; | |
75 | #define SFTP_EXT_POSIX_RENAME 0x00000001 | |
76 | #define SFTP_EXT_STATVFS 0x00000002 | |
77 | #define SFTP_EXT_FSTATVFS 0x00000004 | |
78 | u_int exts; | |
79 | }; | |
80 | ||
81 | static char * | |
82 | get_handle(int fd, u_int expected_id, u_int *len, const char *errfmt, ...) | |
83 | __attribute__((format(printf, 4, 5))); | |
84 | ||
85 | static void | |
86 | send_msg(int fd, Buffer *m) | |
87 | { | |
88 | u_char mlen[4]; | |
89 | struct iovec iov[2]; | |
90 | ||
91 | if (buffer_len(m) > SFTP_MAX_MSG_LENGTH) | |
92 | fatal("Outbound message too long %u", buffer_len(m)); | |
93 | ||
94 | /* Send length first */ | |
95 | put_u32(mlen, buffer_len(m)); | |
96 | iov[0].iov_base = mlen; | |
97 | iov[0].iov_len = sizeof(mlen); | |
98 | iov[1].iov_base = buffer_ptr(m); | |
99 | iov[1].iov_len = buffer_len(m); | |
100 | ||
101 | if (atomiciov(writev, fd, iov, 2) != buffer_len(m) + sizeof(mlen)) | |
102 | fatal("Couldn't send packet: %s", strerror(errno)); | |
103 | ||
104 | buffer_clear(m); | |
105 | } | |
106 | ||
107 | static void | |
108 | get_msg(int fd, Buffer *m) | |
109 | { | |
110 | u_int msg_len; | |
111 | ||
112 | buffer_append_space(m, 4); | |
113 | if (atomicio(read, fd, buffer_ptr(m), 4) != 4) { | |
114 | if (errno == EPIPE) | |
115 | fatal("Connection closed"); | |
116 | else | |
117 | fatal("Couldn't read packet: %s", strerror(errno)); | |
118 | } | |
119 | ||
120 | msg_len = buffer_get_int(m); | |
121 | if (msg_len > SFTP_MAX_MSG_LENGTH) | |
122 | fatal("Received message too long %u", msg_len); | |
123 | ||
124 | buffer_append_space(m, msg_len); | |
125 | if (atomicio(read, fd, buffer_ptr(m), msg_len) != msg_len) { | |
126 | if (errno == EPIPE) | |
127 | fatal("Connection closed"); | |
128 | else | |
129 | fatal("Read packet: %s", strerror(errno)); | |
130 | } | |
131 | } | |
132 | ||
133 | static void | |
134 | send_string_request(int fd, u_int id, u_int code, char *s, | |
135 | u_int len) | |
136 | { | |
137 | Buffer msg; | |
138 | ||
139 | buffer_init(&msg); | |
140 | buffer_put_char(&msg, code); | |
141 | buffer_put_int(&msg, id); | |
142 | buffer_put_string(&msg, s, len); | |
143 | send_msg(fd, &msg); | |
144 | debug3("Sent message fd %d T:%u I:%u", fd, code, id); | |
145 | buffer_free(&msg); | |
146 | } | |
147 | ||
148 | static void | |
149 | send_string_attrs_request(int fd, u_int id, u_int code, char *s, | |
150 | u_int len, Attrib *a) | |
151 | { | |
152 | Buffer msg; | |
153 | ||
154 | buffer_init(&msg); | |
155 | buffer_put_char(&msg, code); | |
156 | buffer_put_int(&msg, id); | |
157 | buffer_put_string(&msg, s, len); | |
158 | encode_attrib(&msg, a); | |
159 | send_msg(fd, &msg); | |
160 | debug3("Sent message fd %d T:%u I:%u", fd, code, id); | |
161 | buffer_free(&msg); | |
162 | } | |
163 | ||
164 | static u_int | |
165 | get_status(int fd, u_int expected_id) | |
166 | { | |
167 | Buffer msg; | |
168 | u_int type, id, status; | |
169 | ||
170 | buffer_init(&msg); | |
171 | get_msg(fd, &msg); | |
172 | type = buffer_get_char(&msg); | |
173 | id = buffer_get_int(&msg); | |
174 | ||
175 | if (id != expected_id) | |
176 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
177 | if (type != SSH2_FXP_STATUS) | |
178 | fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u", | |
179 | SSH2_FXP_STATUS, type); | |
180 | ||
181 | status = buffer_get_int(&msg); | |
182 | buffer_free(&msg); | |
183 | ||
184 | debug3("SSH2_FXP_STATUS %u", status); | |
185 | ||
186 | return(status); | |
187 | } | |
188 | ||
189 | static char * | |
190 | get_handle(int fd, u_int expected_id, u_int *len, const char *errfmt, ...) | |
191 | { | |
192 | Buffer msg; | |
193 | u_int type, id; | |
194 | char *handle, errmsg[256]; | |
195 | va_list args; | |
196 | int status; | |
197 | ||
198 | va_start(args, errfmt); | |
199 | if (errfmt != NULL) | |
200 | vsnprintf(errmsg, sizeof(errmsg), errfmt, args); | |
201 | va_end(args); | |
202 | ||
203 | buffer_init(&msg); | |
204 | get_msg(fd, &msg); | |
205 | type = buffer_get_char(&msg); | |
206 | id = buffer_get_int(&msg); | |
207 | ||
208 | if (id != expected_id) | |
209 | fatal("%s: ID mismatch (%u != %u)", | |
210 | errfmt == NULL ? __func__ : errmsg, id, expected_id); | |
211 | if (type == SSH2_FXP_STATUS) { | |
212 | status = buffer_get_int(&msg); | |
213 | if (errfmt != NULL) | |
214 | error("%s: %s", errmsg, fx2txt(status)); | |
215 | buffer_free(&msg); | |
216 | return(NULL); | |
217 | } else if (type != SSH2_FXP_HANDLE) | |
218 | fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u", | |
219 | errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type); | |
220 | ||
221 | handle = buffer_get_string(&msg, len); | |
222 | buffer_free(&msg); | |
223 | ||
224 | return(handle); | |
225 | } | |
226 | ||
227 | static Attrib * | |
228 | get_decode_stat(int fd, u_int expected_id, int quiet) | |
229 | { | |
230 | Buffer msg; | |
231 | u_int type, id; | |
232 | Attrib *a; | |
233 | ||
234 | buffer_init(&msg); | |
235 | get_msg(fd, &msg); | |
236 | ||
237 | type = buffer_get_char(&msg); | |
238 | id = buffer_get_int(&msg); | |
239 | ||
240 | debug3("Received stat reply T:%u I:%u", type, id); | |
241 | if (id != expected_id) | |
242 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
243 | if (type == SSH2_FXP_STATUS) { | |
244 | int status = buffer_get_int(&msg); | |
245 | ||
246 | if (quiet) | |
247 | debug("Couldn't stat remote file: %s", fx2txt(status)); | |
248 | else | |
249 | error("Couldn't stat remote file: %s", fx2txt(status)); | |
250 | buffer_free(&msg); | |
251 | return(NULL); | |
252 | } else if (type != SSH2_FXP_ATTRS) { | |
253 | fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u", | |
254 | SSH2_FXP_ATTRS, type); | |
255 | } | |
256 | a = decode_attrib(&msg); | |
257 | buffer_free(&msg); | |
258 | ||
259 | return(a); | |
260 | } | |
261 | ||
262 | static int | |
263 | get_decode_statvfs(int fd, struct sftp_statvfs *st, u_int expected_id, | |
264 | int quiet) | |
265 | { | |
266 | Buffer msg; | |
267 | u_int type, id, flag; | |
268 | ||
269 | buffer_init(&msg); | |
270 | get_msg(fd, &msg); | |
271 | ||
272 | type = buffer_get_char(&msg); | |
273 | id = buffer_get_int(&msg); | |
274 | ||
275 | debug3("Received statvfs reply T:%u I:%u", type, id); | |
276 | if (id != expected_id) | |
277 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
278 | if (type == SSH2_FXP_STATUS) { | |
279 | int status = buffer_get_int(&msg); | |
280 | ||
281 | if (quiet) | |
282 | debug("Couldn't statvfs: %s", fx2txt(status)); | |
283 | else | |
284 | error("Couldn't statvfs: %s", fx2txt(status)); | |
285 | buffer_free(&msg); | |
286 | return -1; | |
287 | } else if (type != SSH2_FXP_EXTENDED_REPLY) { | |
288 | fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u", | |
289 | SSH2_FXP_EXTENDED_REPLY, type); | |
290 | } | |
291 | ||
292 | bzero(st, sizeof(*st)); | |
293 | st->f_bsize = buffer_get_int64(&msg); | |
294 | st->f_frsize = buffer_get_int64(&msg); | |
295 | st->f_blocks = buffer_get_int64(&msg); | |
296 | st->f_bfree = buffer_get_int64(&msg); | |
297 | st->f_bavail = buffer_get_int64(&msg); | |
298 | st->f_files = buffer_get_int64(&msg); | |
299 | st->f_ffree = buffer_get_int64(&msg); | |
300 | st->f_favail = buffer_get_int64(&msg); | |
301 | st->f_fsid = buffer_get_int64(&msg); | |
302 | flag = buffer_get_int64(&msg); | |
303 | st->f_namemax = buffer_get_int64(&msg); | |
304 | ||
305 | st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0; | |
306 | st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0; | |
307 | ||
308 | buffer_free(&msg); | |
309 | ||
310 | return 0; | |
311 | } | |
312 | ||
313 | struct sftp_conn * | |
314 | do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests) | |
315 | { | |
316 | u_int type, exts = 0; | |
317 | int version; | |
318 | Buffer msg; | |
319 | struct sftp_conn *ret; | |
320 | ||
321 | buffer_init(&msg); | |
322 | buffer_put_char(&msg, SSH2_FXP_INIT); | |
323 | buffer_put_int(&msg, SSH2_FILEXFER_VERSION); | |
324 | send_msg(fd_out, &msg); | |
325 | ||
326 | buffer_clear(&msg); | |
327 | ||
328 | get_msg(fd_in, &msg); | |
329 | ||
330 | /* Expecting a VERSION reply */ | |
331 | if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) { | |
332 | error("Invalid packet back from SSH2_FXP_INIT (type %u)", | |
333 | type); | |
334 | buffer_free(&msg); | |
335 | return(NULL); | |
336 | } | |
337 | version = buffer_get_int(&msg); | |
338 | ||
339 | debug2("Remote version: %d", version); | |
340 | ||
341 | /* Check for extensions */ | |
342 | while (buffer_len(&msg) > 0) { | |
343 | char *name = buffer_get_string(&msg, NULL); | |
344 | char *value = buffer_get_string(&msg, NULL); | |
345 | int known = 0; | |
346 | ||
347 | if (strcmp(name, "posix-rename@openssh.com") == 0 && | |
348 | strcmp(value, "1") == 0) { | |
349 | exts |= SFTP_EXT_POSIX_RENAME; | |
350 | known = 1; | |
351 | } else if (strcmp(name, "statvfs@openssh.com") == 0 && | |
352 | strcmp(value, "2") == 0) { | |
353 | exts |= SFTP_EXT_STATVFS; | |
354 | known = 1; | |
355 | } if (strcmp(name, "fstatvfs@openssh.com") == 0 && | |
356 | strcmp(value, "2") == 0) { | |
357 | exts |= SFTP_EXT_FSTATVFS; | |
358 | known = 1; | |
359 | } | |
360 | if (known) { | |
361 | debug2("Server supports extension \"%s\" revision %s", | |
362 | name, value); | |
363 | } else { | |
364 | debug2("Unrecognised server extension \"%s\"", name); | |
365 | } | |
366 | xfree(name); | |
367 | xfree(value); | |
368 | } | |
369 | ||
370 | buffer_free(&msg); | |
371 | ||
372 | ret = xmalloc(sizeof(*ret)); | |
373 | ret->fd_in = fd_in; | |
374 | ret->fd_out = fd_out; | |
375 | ret->transfer_buflen = transfer_buflen; | |
376 | ret->num_requests = num_requests; | |
377 | ret->version = version; | |
378 | ret->msg_id = 1; | |
379 | ret->exts = exts; | |
380 | ||
381 | /* Some filexfer v.0 servers don't support large packets */ | |
382 | if (version == 0) | |
383 | ret->transfer_buflen = MIN(ret->transfer_buflen, 20480); | |
384 | ||
385 | return(ret); | |
386 | } | |
387 | ||
388 | u_int | |
389 | sftp_proto_version(struct sftp_conn *conn) | |
390 | { | |
391 | return(conn->version); | |
392 | } | |
393 | ||
394 | int | |
395 | do_close(struct sftp_conn *conn, char *handle, u_int handle_len) | |
396 | { | |
397 | u_int id, status; | |
398 | Buffer msg; | |
399 | ||
400 | buffer_init(&msg); | |
401 | ||
402 | id = conn->msg_id++; | |
403 | buffer_put_char(&msg, SSH2_FXP_CLOSE); | |
404 | buffer_put_int(&msg, id); | |
405 | buffer_put_string(&msg, handle, handle_len); | |
406 | send_msg(conn->fd_out, &msg); | |
407 | debug3("Sent message SSH2_FXP_CLOSE I:%u", id); | |
408 | ||
409 | status = get_status(conn->fd_in, id); | |
410 | if (status != SSH2_FX_OK) | |
411 | error("Couldn't close file: %s", fx2txt(status)); | |
412 | ||
413 | buffer_free(&msg); | |
414 | ||
415 | return(status); | |
416 | } | |
417 | ||
418 | ||
419 | static int | |
420 | do_lsreaddir(struct sftp_conn *conn, char *path, int printflag, | |
421 | SFTP_DIRENT ***dir) | |
422 | { | |
423 | Buffer msg; | |
424 | u_int count, type, id, handle_len, i, expected_id, ents = 0; | |
425 | char *handle; | |
426 | ||
427 | id = conn->msg_id++; | |
428 | ||
429 | buffer_init(&msg); | |
430 | buffer_put_char(&msg, SSH2_FXP_OPENDIR); | |
431 | buffer_put_int(&msg, id); | |
432 | buffer_put_cstring(&msg, path); | |
433 | send_msg(conn->fd_out, &msg); | |
434 | ||
435 | buffer_clear(&msg); | |
436 | ||
437 | handle = get_handle(conn->fd_in, id, &handle_len, | |
438 | "remote readdir(\"%s\")", path); | |
439 | if (handle == NULL) | |
440 | return(-1); | |
441 | ||
442 | if (dir) { | |
443 | ents = 0; | |
444 | *dir = xmalloc(sizeof(**dir)); | |
445 | (*dir)[0] = NULL; | |
446 | } | |
447 | ||
448 | for (; !interrupted;) { | |
449 | id = expected_id = conn->msg_id++; | |
450 | ||
451 | debug3("Sending SSH2_FXP_READDIR I:%u", id); | |
452 | ||
453 | buffer_clear(&msg); | |
454 | buffer_put_char(&msg, SSH2_FXP_READDIR); | |
455 | buffer_put_int(&msg, id); | |
456 | buffer_put_string(&msg, handle, handle_len); | |
457 | send_msg(conn->fd_out, &msg); | |
458 | ||
459 | buffer_clear(&msg); | |
460 | ||
461 | get_msg(conn->fd_in, &msg); | |
462 | ||
463 | type = buffer_get_char(&msg); | |
464 | id = buffer_get_int(&msg); | |
465 | ||
466 | debug3("Received reply T:%u I:%u", type, id); | |
467 | ||
468 | if (id != expected_id) | |
469 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
470 | ||
471 | if (type == SSH2_FXP_STATUS) { | |
472 | int status = buffer_get_int(&msg); | |
473 | ||
474 | debug3("Received SSH2_FXP_STATUS %d", status); | |
475 | ||
476 | if (status == SSH2_FX_EOF) { | |
477 | break; | |
478 | } else { | |
479 | error("Couldn't read directory: %s", | |
480 | fx2txt(status)); | |
481 | do_close(conn, handle, handle_len); | |
482 | xfree(handle); | |
483 | return(status); | |
484 | } | |
485 | } else if (type != SSH2_FXP_NAME) | |
486 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", | |
487 | SSH2_FXP_NAME, type); | |
488 | ||
489 | count = buffer_get_int(&msg); | |
490 | if (count == 0) | |
491 | break; | |
492 | debug3("Received %d SSH2_FXP_NAME responses", count); | |
493 | for (i = 0; i < count; i++) { | |
494 | char *filename, *longname; | |
495 | Attrib *a; | |
496 | ||
497 | filename = buffer_get_string(&msg, NULL); | |
498 | longname = buffer_get_string(&msg, NULL); | |
499 | a = decode_attrib(&msg); | |
500 | ||
501 | if (printflag) | |
502 | printf("%s\n", longname); | |
503 | ||
504 | /* | |
505 | * Directory entries should never contain '/' | |
506 | * These can be used to attack recursive ops | |
507 | * (e.g. send '../../../../etc/passwd') | |
508 | */ | |
509 | if (strchr(filename, '/') != NULL) { | |
510 | error("Server sent suspect path \"%s\" " | |
511 | "during readdir of \"%s\"", filename, path); | |
512 | goto next; | |
513 | } | |
514 | ||
515 | if (dir) { | |
516 | *dir = xrealloc(*dir, ents + 2, sizeof(**dir)); | |
517 | (*dir)[ents] = xmalloc(sizeof(***dir)); | |
518 | (*dir)[ents]->filename = xstrdup(filename); | |
519 | (*dir)[ents]->longname = xstrdup(longname); | |
520 | memcpy(&(*dir)[ents]->a, a, sizeof(*a)); | |
521 | (*dir)[++ents] = NULL; | |
522 | } | |
523 | next: | |
524 | xfree(filename); | |
525 | xfree(longname); | |
526 | } | |
527 | } | |
528 | ||
529 | buffer_free(&msg); | |
530 | do_close(conn, handle, handle_len); | |
531 | xfree(handle); | |
532 | ||
533 | /* Don't return partial matches on interrupt */ | |
534 | if (interrupted && dir != NULL && *dir != NULL) { | |
535 | free_sftp_dirents(*dir); | |
536 | *dir = xmalloc(sizeof(**dir)); | |
537 | **dir = NULL; | |
538 | } | |
539 | ||
540 | return(0); | |
541 | } | |
542 | ||
543 | int | |
544 | do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir) | |
545 | { | |
546 | return(do_lsreaddir(conn, path, 0, dir)); | |
547 | } | |
548 | ||
549 | void free_sftp_dirents(SFTP_DIRENT **s) | |
550 | { | |
551 | int i; | |
552 | ||
553 | for (i = 0; s[i]; i++) { | |
554 | xfree(s[i]->filename); | |
555 | xfree(s[i]->longname); | |
556 | xfree(s[i]); | |
557 | } | |
558 | xfree(s); | |
559 | } | |
560 | ||
561 | int | |
562 | do_rm(struct sftp_conn *conn, char *path) | |
563 | { | |
564 | u_int status, id; | |
565 | ||
566 | debug2("Sending SSH2_FXP_REMOVE \"%s\"", path); | |
567 | ||
568 | id = conn->msg_id++; | |
569 | send_string_request(conn->fd_out, id, SSH2_FXP_REMOVE, path, | |
570 | strlen(path)); | |
571 | status = get_status(conn->fd_in, id); | |
572 | if (status != SSH2_FX_OK) | |
573 | error("Couldn't delete file: %s", fx2txt(status)); | |
574 | return(status); | |
575 | } | |
576 | ||
577 | int | |
578 | do_mkdir(struct sftp_conn *conn, char *path, Attrib *a, int printflag) | |
579 | { | |
580 | u_int status, id; | |
581 | ||
582 | id = conn->msg_id++; | |
583 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_MKDIR, path, | |
584 | strlen(path), a); | |
585 | ||
586 | status = get_status(conn->fd_in, id); | |
587 | if (status != SSH2_FX_OK && printflag) | |
588 | error("Couldn't create directory: %s", fx2txt(status)); | |
589 | ||
590 | return(status); | |
591 | } | |
592 | ||
593 | int | |
594 | do_rmdir(struct sftp_conn *conn, char *path) | |
595 | { | |
596 | u_int status, id; | |
597 | ||
598 | id = conn->msg_id++; | |
599 | send_string_request(conn->fd_out, id, SSH2_FXP_RMDIR, path, | |
600 | strlen(path)); | |
601 | ||
602 | status = get_status(conn->fd_in, id); | |
603 | if (status != SSH2_FX_OK) | |
604 | error("Couldn't remove directory: %s", fx2txt(status)); | |
605 | ||
606 | return(status); | |
607 | } | |
608 | ||
609 | Attrib * | |
610 | do_stat(struct sftp_conn *conn, char *path, int quiet) | |
611 | { | |
612 | u_int id; | |
613 | ||
614 | id = conn->msg_id++; | |
615 | ||
616 | send_string_request(conn->fd_out, id, | |
617 | conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT, | |
618 | path, strlen(path)); | |
619 | ||
620 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
621 | } | |
622 | ||
623 | Attrib * | |
624 | do_lstat(struct sftp_conn *conn, char *path, int quiet) | |
625 | { | |
626 | u_int id; | |
627 | ||
628 | if (conn->version == 0) { | |
629 | if (quiet) | |
630 | debug("Server version does not support lstat operation"); | |
631 | else | |
632 | logit("Server version does not support lstat operation"); | |
633 | return(do_stat(conn, path, quiet)); | |
634 | } | |
635 | ||
636 | id = conn->msg_id++; | |
637 | send_string_request(conn->fd_out, id, SSH2_FXP_LSTAT, path, | |
638 | strlen(path)); | |
639 | ||
640 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
641 | } | |
642 | ||
643 | #ifdef notyet | |
644 | Attrib * | |
645 | do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet) | |
646 | { | |
647 | u_int id; | |
648 | ||
649 | id = conn->msg_id++; | |
650 | send_string_request(conn->fd_out, id, SSH2_FXP_FSTAT, handle, | |
651 | handle_len); | |
652 | ||
653 | return(get_decode_stat(conn->fd_in, id, quiet)); | |
654 | } | |
655 | #endif | |
656 | ||
657 | int | |
658 | do_setstat(struct sftp_conn *conn, char *path, Attrib *a) | |
659 | { | |
660 | u_int status, id; | |
661 | ||
662 | id = conn->msg_id++; | |
663 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_SETSTAT, path, | |
664 | strlen(path), a); | |
665 | ||
666 | status = get_status(conn->fd_in, id); | |
667 | if (status != SSH2_FX_OK) | |
668 | error("Couldn't setstat on \"%s\": %s", path, | |
669 | fx2txt(status)); | |
670 | ||
671 | return(status); | |
672 | } | |
673 | ||
674 | int | |
675 | do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len, | |
676 | Attrib *a) | |
677 | { | |
678 | u_int status, id; | |
679 | ||
680 | id = conn->msg_id++; | |
681 | send_string_attrs_request(conn->fd_out, id, SSH2_FXP_FSETSTAT, handle, | |
682 | handle_len, a); | |
683 | ||
684 | status = get_status(conn->fd_in, id); | |
685 | if (status != SSH2_FX_OK) | |
686 | error("Couldn't fsetstat: %s", fx2txt(status)); | |
687 | ||
688 | return(status); | |
689 | } | |
690 | ||
691 | char * | |
692 | do_realpath(struct sftp_conn *conn, char *path) | |
693 | { | |
694 | Buffer msg; | |
695 | u_int type, expected_id, count, id; | |
696 | char *filename, *longname; | |
697 | Attrib *a; | |
698 | ||
699 | expected_id = id = conn->msg_id++; | |
700 | send_string_request(conn->fd_out, id, SSH2_FXP_REALPATH, path, | |
701 | strlen(path)); | |
702 | ||
703 | buffer_init(&msg); | |
704 | ||
705 | get_msg(conn->fd_in, &msg); | |
706 | type = buffer_get_char(&msg); | |
707 | id = buffer_get_int(&msg); | |
708 | ||
709 | if (id != expected_id) | |
710 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
711 | ||
712 | if (type == SSH2_FXP_STATUS) { | |
713 | u_int status = buffer_get_int(&msg); | |
714 | ||
715 | error("Couldn't canonicalise: %s", fx2txt(status)); | |
716 | return(NULL); | |
717 | } else if (type != SSH2_FXP_NAME) | |
718 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", | |
719 | SSH2_FXP_NAME, type); | |
720 | ||
721 | count = buffer_get_int(&msg); | |
722 | if (count != 1) | |
723 | fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count); | |
724 | ||
725 | filename = buffer_get_string(&msg, NULL); | |
726 | longname = buffer_get_string(&msg, NULL); | |
727 | a = decode_attrib(&msg); | |
728 | ||
729 | debug3("SSH_FXP_REALPATH %s -> %s", path, filename); | |
730 | ||
731 | xfree(longname); | |
732 | ||
733 | buffer_free(&msg); | |
734 | ||
735 | return(filename); | |
736 | } | |
737 | ||
738 | int | |
739 | do_rename(struct sftp_conn *conn, char *oldpath, char *newpath) | |
740 | { | |
741 | Buffer msg; | |
742 | u_int status, id; | |
743 | ||
744 | buffer_init(&msg); | |
745 | ||
746 | /* Send rename request */ | |
747 | id = conn->msg_id++; | |
748 | if ((conn->exts & SFTP_EXT_POSIX_RENAME)) { | |
749 | buffer_put_char(&msg, SSH2_FXP_EXTENDED); | |
750 | buffer_put_int(&msg, id); | |
751 | buffer_put_cstring(&msg, "posix-rename@openssh.com"); | |
752 | } else { | |
753 | buffer_put_char(&msg, SSH2_FXP_RENAME); | |
754 | buffer_put_int(&msg, id); | |
755 | } | |
756 | buffer_put_cstring(&msg, oldpath); | |
757 | buffer_put_cstring(&msg, newpath); | |
758 | send_msg(conn->fd_out, &msg); | |
759 | debug3("Sent message %s \"%s\" -> \"%s\"", | |
760 | (conn->exts & SFTP_EXT_POSIX_RENAME) ? "posix-rename@openssh.com" : | |
761 | "SSH2_FXP_RENAME", oldpath, newpath); | |
762 | buffer_free(&msg); | |
763 | ||
764 | status = get_status(conn->fd_in, id); | |
765 | if (status != SSH2_FX_OK) | |
766 | error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, | |
767 | newpath, fx2txt(status)); | |
768 | ||
769 | return(status); | |
770 | } | |
771 | ||
772 | int | |
773 | do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath) | |
774 | { | |
775 | Buffer msg; | |
776 | u_int status, id; | |
777 | ||
778 | if (conn->version < 3) { | |
779 | error("This server does not support the symlink operation"); | |
780 | return(SSH2_FX_OP_UNSUPPORTED); | |
781 | } | |
782 | ||
783 | buffer_init(&msg); | |
784 | ||
785 | /* Send symlink request */ | |
786 | id = conn->msg_id++; | |
787 | buffer_put_char(&msg, SSH2_FXP_SYMLINK); | |
788 | buffer_put_int(&msg, id); | |
789 | buffer_put_cstring(&msg, oldpath); | |
790 | buffer_put_cstring(&msg, newpath); | |
791 | send_msg(conn->fd_out, &msg); | |
792 | debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath, | |
793 | newpath); | |
794 | buffer_free(&msg); | |
795 | ||
796 | status = get_status(conn->fd_in, id); | |
797 | if (status != SSH2_FX_OK) | |
798 | error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath, | |
799 | newpath, fx2txt(status)); | |
800 | ||
801 | return(status); | |
802 | } | |
803 | ||
804 | #ifdef notyet | |
805 | char * | |
806 | do_readlink(struct sftp_conn *conn, char *path) | |
807 | { | |
808 | Buffer msg; | |
809 | u_int type, expected_id, count, id; | |
810 | char *filename, *longname; | |
811 | Attrib *a; | |
812 | ||
813 | expected_id = id = conn->msg_id++; | |
814 | send_string_request(conn->fd_out, id, SSH2_FXP_READLINK, path, | |
815 | strlen(path)); | |
816 | ||
817 | buffer_init(&msg); | |
818 | ||
819 | get_msg(conn->fd_in, &msg); | |
820 | type = buffer_get_char(&msg); | |
821 | id = buffer_get_int(&msg); | |
822 | ||
823 | if (id != expected_id) | |
824 | fatal("ID mismatch (%u != %u)", id, expected_id); | |
825 | ||
826 | if (type == SSH2_FXP_STATUS) { | |
827 | u_int status = buffer_get_int(&msg); | |
828 | ||
829 | error("Couldn't readlink: %s", fx2txt(status)); | |
830 | return(NULL); | |
831 | } else if (type != SSH2_FXP_NAME) | |
832 | fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", | |
833 | SSH2_FXP_NAME, type); | |
834 | ||
835 | count = buffer_get_int(&msg); | |
836 | if (count != 1) | |
837 | fatal("Got multiple names (%d) from SSH_FXP_READLINK", count); | |
838 | ||
839 | filename = buffer_get_string(&msg, NULL); | |
840 | longname = buffer_get_string(&msg, NULL); | |
841 | a = decode_attrib(&msg); | |
842 | ||
843 | debug3("SSH_FXP_READLINK %s -> %s", path, filename); | |
844 | ||
845 | xfree(longname); | |
846 | ||
847 | buffer_free(&msg); | |
848 | ||
849 | return(filename); | |
850 | } | |
851 | #endif | |
852 | ||
853 | int | |
854 | do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st, | |
855 | int quiet) | |
856 | { | |
857 | Buffer msg; | |
858 | u_int id; | |
859 | ||
860 | if ((conn->exts & SFTP_EXT_STATVFS) == 0) { | |
861 | error("Server does not support statvfs@openssh.com extension"); | |
862 | return -1; | |
863 | } | |
864 | ||
865 | id = conn->msg_id++; | |
866 | ||
867 | buffer_init(&msg); | |
868 | buffer_clear(&msg); | |
869 | buffer_put_char(&msg, SSH2_FXP_EXTENDED); | |
870 | buffer_put_int(&msg, id); | |
871 | buffer_put_cstring(&msg, "statvfs@openssh.com"); | |
872 | buffer_put_cstring(&msg, path); | |
873 | send_msg(conn->fd_out, &msg); | |
874 | buffer_free(&msg); | |
875 | ||
876 | return get_decode_statvfs(conn->fd_in, st, id, quiet); | |
877 | } | |
878 | ||
879 | #ifdef notyet | |
880 | int | |
881 | do_fstatvfs(struct sftp_conn *conn, const char *handle, u_int handle_len, | |
882 | struct sftp_statvfs *st, int quiet) | |
883 | { | |
884 | Buffer msg; | |
885 | u_int id; | |
886 | ||
887 | if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) { | |
888 | error("Server does not support fstatvfs@openssh.com extension"); | |
889 | return -1; | |
890 | } | |
891 | ||
892 | id = conn->msg_id++; | |
893 | ||
894 | buffer_init(&msg); | |
895 | buffer_clear(&msg); | |
896 | buffer_put_char(&msg, SSH2_FXP_EXTENDED); | |
897 | buffer_put_int(&msg, id); | |
898 | buffer_put_cstring(&msg, "fstatvfs@openssh.com"); | |
899 | buffer_put_string(&msg, handle, handle_len); | |
900 | send_msg(conn->fd_out, &msg); | |
901 | buffer_free(&msg); | |
902 | ||
903 | return get_decode_statvfs(conn->fd_in, st, id, quiet); | |
904 | } | |
905 | #endif | |
906 | ||
907 | static void | |
908 | send_read_request(int fd_out, u_int id, u_int64_t offset, u_int len, | |
909 | char *handle, u_int handle_len) | |
910 | { | |
911 | Buffer msg; | |
912 | ||
913 | buffer_init(&msg); | |
914 | buffer_clear(&msg); | |
915 | buffer_put_char(&msg, SSH2_FXP_READ); | |
916 | buffer_put_int(&msg, id); | |
917 | buffer_put_string(&msg, handle, handle_len); | |
918 | buffer_put_int64(&msg, offset); | |
919 | buffer_put_int(&msg, len); | |
920 | send_msg(fd_out, &msg); | |
921 | buffer_free(&msg); | |
922 | } | |
923 | ||
924 | int | |
925 | do_download(struct sftp_conn *conn, char *remote_path, char *local_path, | |
926 | Attrib *a, int pflag) | |
927 | { | |
928 | Attrib junk; | |
929 | Buffer msg; | |
930 | char *handle; | |
931 | int local_fd, status = 0, write_error; | |
932 | int read_error, write_errno; | |
933 | u_int64_t offset, size; | |
934 | u_int handle_len, mode, type, id, buflen, num_req, max_req; | |
935 | off_t progress_counter; | |
936 | struct request { | |
937 | u_int id; | |
938 | u_int len; | |
939 | u_int64_t offset; | |
940 | TAILQ_ENTRY(request) tq; | |
941 | }; | |
942 | TAILQ_HEAD(reqhead, request) requests; | |
943 | struct request *req; | |
944 | ||
945 | TAILQ_INIT(&requests); | |
946 | ||
947 | if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL) | |
948 | return -1; | |
949 | ||
950 | /* Do not preserve set[ug]id here, as we do not preserve ownership */ | |
951 | if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) | |
952 | mode = a->perm & 0777; | |
953 | else | |
954 | mode = 0666; | |
955 | ||
956 | if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) && | |
957 | (!S_ISREG(a->perm))) { | |
958 | error("Cannot download non-regular file: %s", remote_path); | |
959 | return(-1); | |
960 | } | |
961 | ||
962 | if (a->flags & SSH2_FILEXFER_ATTR_SIZE) | |
963 | size = a->size; | |
964 | else | |
965 | size = 0; | |
966 | ||
967 | buflen = conn->transfer_buflen; | |
968 | buffer_init(&msg); | |
969 | ||
970 | /* Send open request */ | |
971 | id = conn->msg_id++; | |
972 | buffer_put_char(&msg, SSH2_FXP_OPEN); | |
973 | buffer_put_int(&msg, id); | |
974 | buffer_put_cstring(&msg, remote_path); | |
975 | buffer_put_int(&msg, SSH2_FXF_READ); | |
976 | attrib_clear(&junk); /* Send empty attributes */ | |
977 | encode_attrib(&msg, &junk); | |
978 | send_msg(conn->fd_out, &msg); | |
979 | debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); | |
980 | ||
981 | handle = get_handle(conn->fd_in, id, &handle_len, | |
982 | "remote open(\"%s\")", remote_path); | |
983 | if (handle == NULL) { | |
984 | buffer_free(&msg); | |
985 | return(-1); | |
986 | } | |
987 | ||
988 | local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC, | |
989 | mode | S_IWRITE); | |
990 | if (local_fd == -1) { | |
991 | error("Couldn't open local file \"%s\" for writing: %s", | |
992 | local_path, strerror(errno)); | |
993 | do_close(conn, handle, handle_len); | |
994 | buffer_free(&msg); | |
995 | xfree(handle); | |
996 | return(-1); | |
997 | } | |
998 | ||
999 | /* Read from remote and write to local */ | |
1000 | write_error = read_error = write_errno = num_req = offset = 0; | |
1001 | max_req = 1; | |
1002 | progress_counter = 0; | |
1003 | ||
1004 | if (showprogress && size != 0) | |
1005 | start_progress_meter(remote_path, size, &progress_counter); | |
1006 | ||
1007 | while (num_req > 0 || max_req > 0) { | |
1008 | char *data; | |
1009 | u_int len; | |
1010 | ||
1011 | /* | |
1012 | * Simulate EOF on interrupt: stop sending new requests and | |
1013 | * allow outstanding requests to drain gracefully | |
1014 | */ | |
1015 | if (interrupted) { | |
1016 | if (num_req == 0) /* If we haven't started yet... */ | |
1017 | break; | |
1018 | max_req = 0; | |
1019 | } | |
1020 | ||
1021 | /* Send some more requests */ | |
1022 | while (num_req < max_req) { | |
1023 | debug3("Request range %llu -> %llu (%d/%d)", | |
1024 | (unsigned long long)offset, | |
1025 | (unsigned long long)offset + buflen - 1, | |
1026 | num_req, max_req); | |
1027 | req = xmalloc(sizeof(*req)); | |
1028 | req->id = conn->msg_id++; | |
1029 | req->len = buflen; | |
1030 | req->offset = offset; | |
1031 | offset += buflen; | |
1032 | num_req++; | |
1033 | TAILQ_INSERT_TAIL(&requests, req, tq); | |
1034 | send_read_request(conn->fd_out, req->id, req->offset, | |
1035 | req->len, handle, handle_len); | |
1036 | } | |
1037 | ||
1038 | buffer_clear(&msg); | |
1039 | get_msg(conn->fd_in, &msg); | |
1040 | type = buffer_get_char(&msg); | |
1041 | id = buffer_get_int(&msg); | |
1042 | debug3("Received reply T:%u I:%u R:%d", type, id, max_req); | |
1043 | ||
1044 | /* Find the request in our queue */ | |
1045 | for (req = TAILQ_FIRST(&requests); | |
1046 | req != NULL && req->id != id; | |
1047 | req = TAILQ_NEXT(req, tq)) | |
1048 | ; | |
1049 | if (req == NULL) | |
1050 | fatal("Unexpected reply %u", id); | |
1051 | ||
1052 | switch (type) { | |
1053 | case SSH2_FXP_STATUS: | |
1054 | status = buffer_get_int(&msg); | |
1055 | if (status != SSH2_FX_EOF) | |
1056 | read_error = 1; | |
1057 | max_req = 0; | |
1058 | TAILQ_REMOVE(&requests, req, tq); | |
1059 | xfree(req); | |
1060 | num_req--; | |
1061 | break; | |
1062 | case SSH2_FXP_DATA: | |
1063 | data = buffer_get_string(&msg, &len); | |
1064 | debug3("Received data %llu -> %llu", | |
1065 | (unsigned long long)req->offset, | |
1066 | (unsigned long long)req->offset + len - 1); | |
1067 | if (len > req->len) | |
1068 | fatal("Received more data than asked for " | |
1069 | "%u > %u", len, req->len); | |
1070 | if ((lseek(local_fd, req->offset, SEEK_SET) == -1 || | |
1071 | atomicio(vwrite, local_fd, data, len) != len) && | |
1072 | !write_error) { | |
1073 | write_errno = errno; | |
1074 | write_error = 1; | |
1075 | max_req = 0; | |
1076 | } | |
1077 | progress_counter += len; | |
1078 | xfree(data); | |
1079 | ||
1080 | if (len == req->len) { | |
1081 | TAILQ_REMOVE(&requests, req, tq); | |
1082 | xfree(req); | |
1083 | num_req--; | |
1084 | } else { | |
1085 | /* Resend the request for the missing data */ | |
1086 | debug3("Short data block, re-requesting " | |
1087 | "%llu -> %llu (%2d)", | |
1088 | (unsigned long long)req->offset + len, | |
1089 | (unsigned long long)req->offset + | |
1090 | req->len - 1, num_req); | |
1091 | req->id = conn->msg_id++; | |
1092 | req->len -= len; | |
1093 | req->offset += len; | |
1094 | send_read_request(conn->fd_out, req->id, | |
1095 | req->offset, req->len, handle, handle_len); | |
1096 | /* Reduce the request size */ | |
1097 | if (len < buflen) | |
1098 | buflen = MAX(MIN_READ_SIZE, len); | |
1099 | } | |
1100 | if (max_req > 0) { /* max_req = 0 iff EOF received */ | |
1101 | if (size > 0 && offset > size) { | |
1102 | /* Only one request at a time | |
1103 | * after the expected EOF */ | |
1104 | debug3("Finish at %llu (%2d)", | |
1105 | (unsigned long long)offset, | |
1106 | num_req); | |
1107 | max_req = 1; | |
1108 | } else if (max_req <= conn->num_requests) { | |
1109 | ++max_req; | |
1110 | } | |
1111 | } | |
1112 | break; | |
1113 | default: | |
1114 | fatal("Expected SSH2_FXP_DATA(%u) packet, got %u", | |
1115 | SSH2_FXP_DATA, type); | |
1116 | } | |
1117 | } | |
1118 | ||
1119 | if (showprogress && size) | |
1120 | stop_progress_meter(); | |
1121 | ||
1122 | /* Sanity check */ | |
1123 | if (TAILQ_FIRST(&requests) != NULL) | |
1124 | fatal("Transfer complete, but requests still in queue"); | |
1125 | ||
1126 | if (read_error) { | |
1127 | error("Couldn't read from remote file \"%s\" : %s", | |
1128 | remote_path, fx2txt(status)); | |
1129 | do_close(conn, handle, handle_len); | |
1130 | } else if (write_error) { | |
1131 | error("Couldn't write to \"%s\": %s", local_path, | |
1132 | strerror(write_errno)); | |
1133 | status = -1; | |
1134 | do_close(conn, handle, handle_len); | |
1135 | } else { | |
1136 | status = do_close(conn, handle, handle_len); | |
1137 | ||
1138 | /* Override umask and utimes if asked */ | |
1139 | #ifdef HAVE_FCHMOD | |
1140 | if (pflag && fchmod(local_fd, mode) == -1) | |
1141 | #else | |
1142 | if (pflag && chmod(local_path, mode) == -1) | |
1143 | #endif /* HAVE_FCHMOD */ | |
1144 | error("Couldn't set mode on \"%s\": %s", local_path, | |
1145 | strerror(errno)); | |
1146 | if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) { | |
1147 | struct timeval tv[2]; | |
1148 | tv[0].tv_sec = a->atime; | |
1149 | tv[1].tv_sec = a->mtime; | |
1150 | tv[0].tv_usec = tv[1].tv_usec = 0; | |
1151 | if (utimes(local_path, tv) == -1) | |
1152 | error("Can't set times on \"%s\": %s", | |
1153 | local_path, strerror(errno)); | |
1154 | } | |
1155 | } | |
1156 | close(local_fd); | |
1157 | buffer_free(&msg); | |
1158 | xfree(handle); | |
1159 | ||
1160 | return(status); | |
1161 | } | |
1162 | ||
1163 | static int | |
1164 | download_dir_internal(struct sftp_conn *conn, char *src, char *dst, | |
1165 | Attrib *dirattrib, int pflag, int printflag, int depth) | |
1166 | { | |
1167 | int i, ret = 0; | |
1168 | SFTP_DIRENT **dir_entries; | |
1169 | char *filename, *new_src, *new_dst; | |
1170 | mode_t mode = 0777; | |
1171 | ||
1172 | if (depth >= MAX_DIR_DEPTH) { | |
1173 | error("Maximum directory depth exceeded: %d levels", depth); | |
1174 | return -1; | |
1175 | } | |
1176 | ||
1177 | if (dirattrib == NULL && | |
1178 | (dirattrib = do_stat(conn, src, 1)) == NULL) { | |
1179 | error("Unable to stat remote directory \"%s\"", src); | |
1180 | return -1; | |
1181 | } | |
1182 | if (!S_ISDIR(dirattrib->perm)) { | |
1183 | error("\"%s\" is not a directory", src); | |
1184 | return -1; | |
1185 | } | |
1186 | if (printflag) | |
1187 | printf("Retrieving %s\n", src); | |
1188 | ||
1189 | if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) | |
1190 | mode = dirattrib->perm & 01777; | |
1191 | else { | |
1192 | debug("Server did not send permissions for " | |
1193 | "directory \"%s\"", dst); | |
1194 | } | |
1195 | ||
1196 | if (mkdir(dst, mode) == -1 && errno != EEXIST) { | |
1197 | error("mkdir %s: %s", dst, strerror(errno)); | |
1198 | return -1; | |
1199 | } | |
1200 | ||
1201 | if (do_readdir(conn, src, &dir_entries) == -1) { | |
1202 | error("%s: Failed to get directory contents", src); | |
1203 | return -1; | |
1204 | } | |
1205 | ||
1206 | for (i = 0; dir_entries[i] != NULL && !interrupted; i++) { | |
1207 | filename = dir_entries[i]->filename; | |
1208 | ||
1209 | new_dst = path_append(dst, filename); | |
1210 | new_src = path_append(src, filename); | |
1211 | ||
1212 | if (S_ISDIR(dir_entries[i]->a.perm)) { | |
1213 | if (strcmp(filename, ".") == 0 || | |
1214 | strcmp(filename, "..") == 0) | |
1215 | continue; | |
1216 | if (download_dir_internal(conn, new_src, new_dst, | |
1217 | &(dir_entries[i]->a), pflag, printflag, | |
1218 | depth + 1) == -1) | |
1219 | ret = -1; | |
1220 | } else if (S_ISREG(dir_entries[i]->a.perm) ) { | |
1221 | if (do_download(conn, new_src, new_dst, | |
1222 | &(dir_entries[i]->a), pflag) == -1) { | |
1223 | error("Download of file %s to %s failed", | |
1224 | new_src, new_dst); | |
1225 | ret = -1; | |
1226 | } | |
1227 | } else | |
1228 | logit("%s: not a regular file\n", new_src); | |
1229 | ||
1230 | xfree(new_dst); | |
1231 | xfree(new_src); | |
1232 | } | |
1233 | ||
1234 | if (pflag) { | |
1235 | if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) { | |
1236 | struct timeval tv[2]; | |
1237 | tv[0].tv_sec = dirattrib->atime; | |
1238 | tv[1].tv_sec = dirattrib->mtime; | |
1239 | tv[0].tv_usec = tv[1].tv_usec = 0; | |
1240 | if (utimes(dst, tv) == -1) | |
1241 | error("Can't set times on \"%s\": %s", | |
1242 | dst, strerror(errno)); | |
1243 | } else | |
1244 | debug("Server did not send times for directory " | |
1245 | "\"%s\"", dst); | |
1246 | } | |
1247 | ||
1248 | free_sftp_dirents(dir_entries); | |
1249 | ||
1250 | return ret; | |
1251 | } | |
1252 | ||
1253 | int | |
1254 | download_dir(struct sftp_conn *conn, char *src, char *dst, | |
1255 | Attrib *dirattrib, int pflag, int printflag) | |
1256 | { | |
1257 | char *src_canon; | |
1258 | int ret; | |
1259 | ||
1260 | if ((src_canon = do_realpath(conn, src)) == NULL) { | |
1261 | error("Unable to canonicalise path \"%s\"", src); | |
1262 | return -1; | |
1263 | } | |
1264 | ||
1265 | ret = download_dir_internal(conn, src_canon, dst, | |
1266 | dirattrib, pflag, printflag, 0); | |
1267 | xfree(src_canon); | |
1268 | return ret; | |
1269 | } | |
1270 | ||
1271 | int | |
1272 | do_upload(struct sftp_conn *conn, char *local_path, char *remote_path, | |
1273 | int pflag) | |
1274 | { | |
1275 | int local_fd; | |
1276 | int status = SSH2_FX_OK; | |
1277 | u_int handle_len, id, type; | |
1278 | off_t offset; | |
1279 | char *handle, *data; | |
1280 | Buffer msg; | |
1281 | struct stat sb; | |
1282 | Attrib a; | |
1283 | u_int32_t startid; | |
1284 | u_int32_t ackid; | |
1285 | struct outstanding_ack { | |
1286 | u_int id; | |
1287 | u_int len; | |
1288 | off_t offset; | |
1289 | TAILQ_ENTRY(outstanding_ack) tq; | |
1290 | }; | |
1291 | TAILQ_HEAD(ackhead, outstanding_ack) acks; | |
1292 | struct outstanding_ack *ack = NULL; | |
1293 | ||
1294 | TAILQ_INIT(&acks); | |
1295 | ||
1296 | if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) { | |
1297 | error("Couldn't open local file \"%s\" for reading: %s", | |
1298 | local_path, strerror(errno)); | |
1299 | return(-1); | |
1300 | } | |
1301 | if (fstat(local_fd, &sb) == -1) { | |
1302 | error("Couldn't fstat local file \"%s\": %s", | |
1303 | local_path, strerror(errno)); | |
1304 | close(local_fd); | |
1305 | return(-1); | |
1306 | } | |
1307 | if (!S_ISREG(sb.st_mode)) { | |
1308 | error("%s is not a regular file", local_path); | |
1309 | close(local_fd); | |
1310 | return(-1); | |
1311 | } | |
1312 | stat_to_attrib(&sb, &a); | |
1313 | ||
1314 | a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; | |
1315 | a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; | |
1316 | a.perm &= 0777; | |
1317 | if (!pflag) | |
1318 | a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; | |
1319 | ||
1320 | buffer_init(&msg); | |
1321 | ||
1322 | /* Send open request */ | |
1323 | id = conn->msg_id++; | |
1324 | buffer_put_char(&msg, SSH2_FXP_OPEN); | |
1325 | buffer_put_int(&msg, id); | |
1326 | buffer_put_cstring(&msg, remote_path); | |
1327 | buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC); | |
1328 | encode_attrib(&msg, &a); | |
1329 | send_msg(conn->fd_out, &msg); | |
1330 | debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); | |
1331 | ||
1332 | buffer_clear(&msg); | |
1333 | ||
1334 | handle = get_handle(conn->fd_in, id, &handle_len, | |
1335 | "remote open(\"%s\")", remote_path); | |
1336 | if (handle == NULL) { | |
1337 | close(local_fd); | |
1338 | buffer_free(&msg); | |
1339 | return -1; | |
1340 | } | |
1341 | ||
1342 | startid = ackid = id + 1; | |
1343 | data = xmalloc(conn->transfer_buflen); | |
1344 | ||
1345 | /* Read from local and write to remote */ | |
1346 | offset = 0; | |
1347 | if (showprogress) | |
1348 | start_progress_meter(local_path, sb.st_size, &offset); | |
1349 | ||
1350 | for (;;) { | |
1351 | int len; | |
1352 | ||
1353 | /* | |
1354 | * Can't use atomicio here because it returns 0 on EOF, | |
1355 | * thus losing the last block of the file. | |
1356 | * Simulate an EOF on interrupt, allowing ACKs from the | |
1357 | * server to drain. | |
1358 | */ | |
1359 | if (interrupted || status != SSH2_FX_OK) | |
1360 | len = 0; | |
1361 | else do | |
1362 | len = read(local_fd, data, conn->transfer_buflen); | |
1363 | while ((len == -1) && | |
1364 | (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)); | |
1365 | ||
1366 | if (len == -1) | |
1367 | fatal("Couldn't read from \"%s\": %s", local_path, | |
1368 | strerror(errno)); | |
1369 | ||
1370 | if (len != 0) { | |
1371 | ack = xmalloc(sizeof(*ack)); | |
1372 | ack->id = ++id; | |
1373 | ack->offset = offset; | |
1374 | ack->len = len; | |
1375 | TAILQ_INSERT_TAIL(&acks, ack, tq); | |
1376 | ||
1377 | buffer_clear(&msg); | |
1378 | buffer_put_char(&msg, SSH2_FXP_WRITE); | |
1379 | buffer_put_int(&msg, ack->id); | |
1380 | buffer_put_string(&msg, handle, handle_len); | |
1381 | buffer_put_int64(&msg, offset); | |
1382 | buffer_put_string(&msg, data, len); | |
1383 | send_msg(conn->fd_out, &msg); | |
1384 | debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u", | |
1385 | id, (unsigned long long)offset, len); | |
1386 | } else if (TAILQ_FIRST(&acks) == NULL) | |
1387 | break; | |
1388 | ||
1389 | if (ack == NULL) | |
1390 | fatal("Unexpected ACK %u", id); | |
1391 | ||
1392 | if (id == startid || len == 0 || | |
1393 | id - ackid >= conn->num_requests) { | |
1394 | u_int r_id; | |
1395 | ||
1396 | buffer_clear(&msg); | |
1397 | get_msg(conn->fd_in, &msg); | |
1398 | type = buffer_get_char(&msg); | |
1399 | r_id = buffer_get_int(&msg); | |
1400 | ||
1401 | if (type != SSH2_FXP_STATUS) | |
1402 | fatal("Expected SSH2_FXP_STATUS(%d) packet, " | |
1403 | "got %d", SSH2_FXP_STATUS, type); | |
1404 | ||
1405 | status = buffer_get_int(&msg); | |
1406 | debug3("SSH2_FXP_STATUS %d", status); | |
1407 | ||
1408 | /* Find the request in our queue */ | |
1409 | for (ack = TAILQ_FIRST(&acks); | |
1410 | ack != NULL && ack->id != r_id; | |
1411 | ack = TAILQ_NEXT(ack, tq)) | |
1412 | ; | |
1413 | if (ack == NULL) | |
1414 | fatal("Can't find request for ID %u", r_id); | |
1415 | TAILQ_REMOVE(&acks, ack, tq); | |
1416 | debug3("In write loop, ack for %u %u bytes at %lld", | |
1417 | ack->id, ack->len, (long long)ack->offset); | |
1418 | ++ackid; | |
1419 | xfree(ack); | |
1420 | } | |
1421 | offset += len; | |
1422 | if (offset < 0) | |
1423 | fatal("%s: offset < 0", __func__); | |
1424 | } | |
1425 | buffer_free(&msg); | |
1426 | ||
1427 | if (showprogress) | |
1428 | stop_progress_meter(); | |
1429 | xfree(data); | |
1430 | ||
1431 | if (status != SSH2_FX_OK) { | |
1432 | error("Couldn't write to remote file \"%s\": %s", | |
1433 | remote_path, fx2txt(status)); | |
1434 | status = -1; | |
1435 | } | |
1436 | ||
1437 | if (close(local_fd) == -1) { | |
1438 | error("Couldn't close local file \"%s\": %s", local_path, | |
1439 | strerror(errno)); | |
1440 | status = -1; | |
1441 | } | |
1442 | ||
1443 | /* Override umask and utimes if asked */ | |
1444 | if (pflag) | |
1445 | do_fsetstat(conn, handle, handle_len, &a); | |
1446 | ||
1447 | if (do_close(conn, handle, handle_len) != SSH2_FX_OK) | |
1448 | status = -1; | |
1449 | xfree(handle); | |
1450 | ||
1451 | return status; | |
1452 | } | |
1453 | ||
1454 | static int | |
1455 | upload_dir_internal(struct sftp_conn *conn, char *src, char *dst, | |
1456 | int pflag, int printflag, int depth) | |
1457 | { | |
1458 | int ret = 0, status; | |
1459 | DIR *dirp; | |
1460 | struct dirent *dp; | |
1461 | char *filename, *new_src, *new_dst; | |
1462 | struct stat sb; | |
1463 | Attrib a; | |
1464 | ||
1465 | if (depth >= MAX_DIR_DEPTH) { | |
1466 | error("Maximum directory depth exceeded: %d levels", depth); | |
1467 | return -1; | |
1468 | } | |
1469 | ||
1470 | if (stat(src, &sb) == -1) { | |
1471 | error("Couldn't stat directory \"%s\": %s", | |
1472 | src, strerror(errno)); | |
1473 | return -1; | |
1474 | } | |
1475 | if (!S_ISDIR(sb.st_mode)) { | |
1476 | error("\"%s\" is not a directory", src); | |
1477 | return -1; | |
1478 | } | |
1479 | if (printflag) | |
1480 | printf("Entering %s\n", src); | |
1481 | ||
1482 | attrib_clear(&a); | |
1483 | stat_to_attrib(&sb, &a); | |
1484 | a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; | |
1485 | a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; | |
1486 | a.perm &= 01777; | |
1487 | if (!pflag) | |
1488 | a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; | |
1489 | ||
1490 | status = do_mkdir(conn, dst, &a, 0); | |
1491 | /* | |
1492 | * we lack a portable status for errno EEXIST, | |
1493 | * so if we get a SSH2_FX_FAILURE back we must check | |
1494 | * if it was created successfully. | |
1495 | */ | |
1496 | if (status != SSH2_FX_OK) { | |
1497 | if (status != SSH2_FX_FAILURE) | |
1498 | return -1; | |
1499 | if (do_stat(conn, dst, 0) == NULL) | |
1500 | return -1; | |
1501 | } | |
1502 | ||
1503 | if ((dirp = opendir(src)) == NULL) { | |
1504 | error("Failed to open dir \"%s\": %s", src, strerror(errno)); | |
1505 | return -1; | |
1506 | } | |
1507 | ||
1508 | while (((dp = readdir(dirp)) != NULL) && !interrupted) { | |
1509 | if (dp->d_ino == 0) | |
1510 | continue; | |
1511 | filename = dp->d_name; | |
1512 | new_dst = path_append(dst, filename); | |
1513 | new_src = path_append(src, filename); | |
1514 | ||
1515 | if (lstat(new_src, &sb) == -1) { | |
1516 | logit("%s: lstat failed: %s", filename, | |
1517 | strerror(errno)); | |
1518 | ret = -1; | |
1519 | } else if (S_ISDIR(sb.st_mode)) { | |
1520 | if (strcmp(filename, ".") == 0 || | |
1521 | strcmp(filename, "..") == 0) | |
1522 | continue; | |
1523 | ||
1524 | if (upload_dir_internal(conn, new_src, new_dst, | |
1525 | pflag, depth + 1, printflag) == -1) | |
1526 | ret = -1; | |
1527 | } else if (S_ISREG(sb.st_mode)) { | |
1528 | if (do_upload(conn, new_src, new_dst, pflag) == -1) { | |
1529 | error("Uploading of file %s to %s failed!", | |
1530 | new_src, new_dst); | |
1531 | ret = -1; | |
1532 | } | |
1533 | } else | |
1534 | logit("%s: not a regular file\n", filename); | |
1535 | xfree(new_dst); | |
1536 | xfree(new_src); | |
1537 | } | |
1538 | ||
1539 | do_setstat(conn, dst, &a); | |
1540 | ||
1541 | (void) closedir(dirp); | |
1542 | return ret; | |
1543 | } | |
1544 | ||
1545 | int | |
1546 | upload_dir(struct sftp_conn *conn, char *src, char *dst, int printflag, | |
1547 | int pflag) | |
1548 | { | |
1549 | char *dst_canon; | |
1550 | int ret; | |
1551 | ||
1552 | if ((dst_canon = do_realpath(conn, dst)) == NULL) { | |
1553 | error("Unable to canonicalise path \"%s\"", dst); | |
1554 | return -1; | |
1555 | } | |
1556 | ||
1557 | ret = upload_dir_internal(conn, src, dst_canon, pflag, printflag, 0); | |
1558 | xfree(dst_canon); | |
1559 | return ret; | |
1560 | } | |
1561 | ||
1562 | char * | |
1563 | path_append(char *p1, char *p2) | |
1564 | { | |
1565 | char *ret; | |
1566 | size_t len = strlen(p1) + strlen(p2) + 2; | |
1567 | ||
1568 | ret = xmalloc(len); | |
1569 | strlcpy(ret, p1, len); | |
1570 | if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/') | |
1571 | strlcat(ret, "/", len); | |
1572 | strlcat(ret, p2, len); | |
1573 | ||
1574 | return(ret); | |
1575 | } | |
1576 |