?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
not February yet...
[openssh-git.git] / sftp-client.c
blobcaa384b4e702cf593d7872f42193530e918ebc6a
1 /* $OpenBSD: sftp-client.c,v 1.94 2010/12/04 00:18:01 djm Exp $ */
2 /*
3 * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 /* XXX: memleaks */
19 /* XXX: signed vs unsigned */
20 /* XXX: remove all logging, only return status codes */
21 /* XXX: copy between two remote sites */
22
23 #include "includes.h"
24
25 #include <sys/types.h>
26 #include <sys/param.h>
27 #ifdef HAVE_SYS_STATVFS_H
28 #include <sys/statvfs.h>
29 #endif
30 #include "openbsd-compat/sys-queue.h"
31 #ifdef HAVE_SYS_STAT_H
32 # include <sys/stat.h>
33 #endif
34 #ifdef HAVE_SYS_TIME_H
35 # include <sys/time.h>
36 #endif
37 #include <sys/uio.h>
38
39 #include <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 #define SFTP_EXT_HARDLINK 0x00000008
79 u_int exts;
80 u_int64_t limit_kbps;
81 struct bwlimit bwlimit_in, bwlimit_out;
82 };
83
84 static char *
85 get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len,
86 const char *errfmt, ...) __attribute__((format(printf, 4, 5)));
87
88 /* ARGSUSED */
89 static int
90 sftpio(void *_bwlimit, size_t amount)
91 {
92 struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit;
93
94 bandwidth_limit(bwlimit, amount);
95 return 0;
96 }
97
98 static void
99 send_msg(struct sftp_conn *conn, Buffer *m)
100 {
101 u_char mlen[4];
102 struct iovec iov[2];
103
104 if (buffer_len(m) > SFTP_MAX_MSG_LENGTH)
105 fatal("Outbound message too long %u", buffer_len(m));
106
107 /* Send length first */
108 put_u32(mlen, buffer_len(m));
109 iov[0].iov_base = mlen;
110 iov[0].iov_len = sizeof(mlen);
111 iov[1].iov_base = buffer_ptr(m);
112 iov[1].iov_len = buffer_len(m);
113
114 if (atomiciov6(writev, conn->fd_out, iov, 2,
115 conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_out) !=
116 buffer_len(m) + sizeof(mlen))
117 fatal("Couldn't send packet: %s", strerror(errno));
118
119 buffer_clear(m);
120 }
121
122 static void
123 get_msg(struct sftp_conn *conn, Buffer *m)
124 {
125 u_int msg_len;
126
127 buffer_append_space(m, 4);
128 if (atomicio6(read, conn->fd_in, buffer_ptr(m), 4,
129 conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in) != 4) {
130 if (errno == EPIPE)
131 fatal("Connection closed");
132 else
133 fatal("Couldn't read packet: %s", strerror(errno));
134 }
135
136 msg_len = buffer_get_int(m);
137 if (msg_len > SFTP_MAX_MSG_LENGTH)
138 fatal("Received message too long %u", msg_len);
139
140 buffer_append_space(m, msg_len);
141 if (atomicio6(read, conn->fd_in, buffer_ptr(m), msg_len,
142 conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in)
143 != msg_len) {
144 if (errno == EPIPE)
145 fatal("Connection closed");
146 else
147 fatal("Read packet: %s", strerror(errno));
148 }
149 }
150
151 static void
152 send_string_request(struct sftp_conn *conn, u_int id, u_int code, char *s,
153 u_int len)
154 {
155 Buffer msg;
156
157 buffer_init(&msg);
158 buffer_put_char(&msg, code);
159 buffer_put_int(&msg, id);
160 buffer_put_string(&msg, s, len);
161 send_msg(conn, &msg);
162 debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
163 buffer_free(&msg);
164 }
165
166 static void
167 send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
168 char *s, u_int len, Attrib *a)
169 {
170 Buffer msg;
171
172 buffer_init(&msg);
173 buffer_put_char(&msg, code);
174 buffer_put_int(&msg, id);
175 buffer_put_string(&msg, s, len);
176 encode_attrib(&msg, a);
177 send_msg(conn, &msg);
178 debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
179 buffer_free(&msg);
180 }
181
182 static u_int
183 get_status(struct sftp_conn *conn, u_int expected_id)
184 {
185 Buffer msg;
186 u_int type, id, status;
187
188 buffer_init(&msg);
189 get_msg(conn, &msg);
190 type = buffer_get_char(&msg);
191 id = buffer_get_int(&msg);
192
193 if (id != expected_id)
194 fatal("ID mismatch (%u != %u)", id, expected_id);
195 if (type != SSH2_FXP_STATUS)
196 fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
197 SSH2_FXP_STATUS, type);
198
199 status = buffer_get_int(&msg);
200 buffer_free(&msg);
201
202 debug3("SSH2_FXP_STATUS %u", status);
203
204 return status;
205 }
206
207 static char *
208 get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len,
209 const char *errfmt, ...)
210 {
211 Buffer msg;
212 u_int type, id;
213 char *handle, errmsg[256];
214 va_list args;
215 int status;
216
217 va_start(args, errfmt);
218 if (errfmt != NULL)
219 vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
220 va_end(args);
221
222 buffer_init(&msg);
223 get_msg(conn, &msg);
224 type = buffer_get_char(&msg);
225 id = buffer_get_int(&msg);
226
227 if (id != expected_id)
228 fatal("%s: ID mismatch (%u != %u)",
229 errfmt == NULL ? __func__ : errmsg, id, expected_id);
230 if (type == SSH2_FXP_STATUS) {
231 status = buffer_get_int(&msg);
232 if (errfmt != NULL)
233 error("%s: %s", errmsg, fx2txt(status));
234 buffer_free(&msg);
235 return(NULL);
236 } else if (type != SSH2_FXP_HANDLE)
237 fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
238 errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
239
240 handle = buffer_get_string(&msg, len);
241 buffer_free(&msg);
242
243 return(handle);
244 }
245
246 static Attrib *
247 get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
248 {
249 Buffer msg;
250 u_int type, id;
251 Attrib *a;
252
253 buffer_init(&msg);
254 get_msg(conn, &msg);
255
256 type = buffer_get_char(&msg);
257 id = buffer_get_int(&msg);
258
259 debug3("Received stat reply T:%u I:%u", type, id);
260 if (id != expected_id)
261 fatal("ID mismatch (%u != %u)", id, expected_id);
262 if (type == SSH2_FXP_STATUS) {
263 int status = buffer_get_int(&msg);
264
265 if (quiet)
266 debug("Couldn't stat remote file: %s", fx2txt(status));
267 else
268 error("Couldn't stat remote file: %s", fx2txt(status));
269 buffer_free(&msg);
270 return(NULL);
271 } else if (type != SSH2_FXP_ATTRS) {
272 fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
273 SSH2_FXP_ATTRS, type);
274 }
275 a = decode_attrib(&msg);
276 buffer_free(&msg);
277
278 return(a);
279 }
280
281 static int
282 get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
283 u_int expected_id, int quiet)
284 {
285 Buffer msg;
286 u_int type, id, flag;
287
288 buffer_init(&msg);
289 get_msg(conn, &msg);
290
291 type = buffer_get_char(&msg);
292 id = buffer_get_int(&msg);
293
294 debug3("Received statvfs reply T:%u I:%u", type, id);
295 if (id != expected_id)
296 fatal("ID mismatch (%u != %u)", id, expected_id);
297 if (type == SSH2_FXP_STATUS) {
298 int status = buffer_get_int(&msg);
299
300 if (quiet)
301 debug("Couldn't statvfs: %s", fx2txt(status));
302 else
303 error("Couldn't statvfs: %s", fx2txt(status));
304 buffer_free(&msg);
305 return -1;
306 } else if (type != SSH2_FXP_EXTENDED_REPLY) {
307 fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
308 SSH2_FXP_EXTENDED_REPLY, type);
309 }
310
311 bzero(st, sizeof(*st));
312 st->f_bsize = buffer_get_int64(&msg);
313 st->f_frsize = buffer_get_int64(&msg);
314 st->f_blocks = buffer_get_int64(&msg);
315 st->f_bfree = buffer_get_int64(&msg);
316 st->f_bavail = buffer_get_int64(&msg);
317 st->f_files = buffer_get_int64(&msg);
318 st->f_ffree = buffer_get_int64(&msg);
319 st->f_favail = buffer_get_int64(&msg);
320 st->f_fsid = buffer_get_int64(&msg);
321 flag = buffer_get_int64(&msg);
322 st->f_namemax = buffer_get_int64(&msg);
323
324 st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
325 st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
326
327 buffer_free(&msg);
328
329 return 0;
330 }
331
332 struct sftp_conn *
333 do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
334 u_int64_t limit_kbps)
335 {
336 u_int type;
337 Buffer msg;
338 struct sftp_conn *ret;
339
340 ret = xmalloc(sizeof(*ret));
341 ret->fd_in = fd_in;
342 ret->fd_out = fd_out;
343 ret->transfer_buflen = transfer_buflen;
344 ret->num_requests = num_requests;
345 ret->exts = 0;
346 ret->limit_kbps = 0;
347
348 buffer_init(&msg);
349 buffer_put_char(&msg, SSH2_FXP_INIT);
350 buffer_put_int(&msg, SSH2_FILEXFER_VERSION);
351 send_msg(ret, &msg);
352
353 buffer_clear(&msg);
354
355 get_msg(ret, &msg);
356
357 /* Expecting a VERSION reply */
358 if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) {
359 error("Invalid packet back from SSH2_FXP_INIT (type %u)",
360 type);
361 buffer_free(&msg);
362 return(NULL);
363 }
364 ret->version = buffer_get_int(&msg);
365
366 debug2("Remote version: %u", ret->version);
367
368 /* Check for extensions */
369 while (buffer_len(&msg) > 0) {
370 char *name = buffer_get_string(&msg, NULL);
371 char *value = buffer_get_string(&msg, NULL);
372 int known = 0;
373
374 if (strcmp(name, "posix-rename@openssh.com") == 0 &&
375 strcmp(value, "1") == 0) {
376 ret->exts |= SFTP_EXT_POSIX_RENAME;
377 known = 1;
378 } else if (strcmp(name, "statvfs@openssh.com") == 0 &&
379 strcmp(value, "2") == 0) {
380 ret->exts |= SFTP_EXT_STATVFS;
381 known = 1;
382 } else if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
383 strcmp(value, "2") == 0) {
384 ret->exts |= SFTP_EXT_FSTATVFS;
385 known = 1;
386 } else if (strcmp(name, "hardlink@openssh.com") == 0 &&
387 strcmp(value, "1") == 0) {
388 ret->exts |= SFTP_EXT_HARDLINK;
389 known = 1;
390 }
391 if (known) {
392 debug2("Server supports extension \"%s\" revision %s",
393 name, value);
394 } else {
395 debug2("Unrecognised server extension \"%s\"", name);
396 }
397 xfree(name);
398 xfree(value);
399 }
400
401 buffer_free(&msg);
402
403 /* Some filexfer v.0 servers don't support large packets */
404 if (ret->version == 0)
405 ret->transfer_buflen = MIN(ret->transfer_buflen, 20480);
406
407 ret->limit_kbps = limit_kbps;
408 if (ret->limit_kbps > 0) {
409 bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
410 ret->transfer_buflen);
411 bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
412 ret->transfer_buflen);
413 }
414
415 return ret;
416 }
417
418 u_int
419 sftp_proto_version(struct sftp_conn *conn)
420 {
421 return conn->version;
422 }
423
424 int
425 do_close(struct sftp_conn *conn, char *handle, u_int handle_len)
426 {
427 u_int id, status;
428 Buffer msg;
429
430 buffer_init(&msg);
431
432 id = conn->msg_id++;
433 buffer_put_char(&msg, SSH2_FXP_CLOSE);
434 buffer_put_int(&msg, id);
435 buffer_put_string(&msg, handle, handle_len);
436 send_msg(conn, &msg);
437 debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
438
439 status = get_status(conn, id);
440 if (status != SSH2_FX_OK)
441 error("Couldn't close file: %s", fx2txt(status));
442
443 buffer_free(&msg);
444
445 return status;
446 }
447
448
449 static int
450 do_lsreaddir(struct sftp_conn *conn, char *path, int printflag,
451 SFTP_DIRENT ***dir)
452 {
453 Buffer msg;
454 u_int count, type, id, handle_len, i, expected_id, ents = 0;
455 char *handle;
456
457 id = conn->msg_id++;
458
459 buffer_init(&msg);
460 buffer_put_char(&msg, SSH2_FXP_OPENDIR);
461 buffer_put_int(&msg, id);
462 buffer_put_cstring(&msg, path);
463 send_msg(conn, &msg);
464
465 buffer_clear(&msg);
466
467 handle = get_handle(conn, id, &handle_len,
468 "remote readdir(\"%s\")", path);
469 if (handle == NULL)
470 return -1;
471
472 if (dir) {
473 ents = 0;
474 *dir = xmalloc(sizeof(**dir));
475 (*dir)[0] = NULL;
476 }
477
478 for (; !interrupted;) {
479 id = expected_id = conn->msg_id++;
480
481 debug3("Sending SSH2_FXP_READDIR I:%u", id);
482
483 buffer_clear(&msg);
484 buffer_put_char(&msg, SSH2_FXP_READDIR);
485 buffer_put_int(&msg, id);
486 buffer_put_string(&msg, handle, handle_len);
487 send_msg(conn, &msg);
488
489 buffer_clear(&msg);
490
491 get_msg(conn, &msg);
492
493 type = buffer_get_char(&msg);
494 id = buffer_get_int(&msg);
495
496 debug3("Received reply T:%u I:%u", type, id);
497
498 if (id != expected_id)
499 fatal("ID mismatch (%u != %u)", id, expected_id);
500
501 if (type == SSH2_FXP_STATUS) {
502 int status = buffer_get_int(&msg);
503
504 debug3("Received SSH2_FXP_STATUS %d", status);
505
506 if (status == SSH2_FX_EOF) {
507 break;
508 } else {
509 error("Couldn't read directory: %s",
510 fx2txt(status));
511 do_close(conn, handle, handle_len);
512 xfree(handle);
513 return(status);
514 }
515 } else if (type != SSH2_FXP_NAME)
516 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
517 SSH2_FXP_NAME, type);
518
519 count = buffer_get_int(&msg);
520 if (count == 0)
521 break;
522 debug3("Received %d SSH2_FXP_NAME responses", count);
523 for (i = 0; i < count; i++) {
524 char *filename, *longname;
525 Attrib *a;
526
527 filename = buffer_get_string(&msg, NULL);
528 longname = buffer_get_string(&msg, NULL);
529 a = decode_attrib(&msg);
530
531 if (printflag)
532 printf("%s\n", longname);
533
534 /*
535 * Directory entries should never contain '/'
536 * These can be used to attack recursive ops
537 * (e.g. send '../../../../etc/passwd')
538 */
539 if (strchr(filename, '/') != NULL) {
540 error("Server sent suspect path \"%s\" "
541 "during readdir of \"%s\"", filename, path);
542 goto next;
543 }
544
545 if (dir) {
546 *dir = xrealloc(*dir, ents + 2, sizeof(**dir));
547 (*dir)[ents] = xmalloc(sizeof(***dir));
548 (*dir)[ents]->filename = xstrdup(filename);
549 (*dir)[ents]->longname = xstrdup(longname);
550 memcpy(&(*dir)[ents]->a, a, sizeof(*a));
551 (*dir)[++ents] = NULL;
552 }
553 next:
554 xfree(filename);
555 xfree(longname);
556 }
557 }
558
559 buffer_free(&msg);
560 do_close(conn, handle, handle_len);
561 xfree(handle);
562
563 /* Don't return partial matches on interrupt */
564 if (interrupted && dir != NULL && *dir != NULL) {
565 free_sftp_dirents(*dir);
566 *dir = xmalloc(sizeof(**dir));
567 **dir = NULL;
568 }
569
570 return 0;
571 }
572
573 int
574 do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir)
575 {
576 return(do_lsreaddir(conn, path, 0, dir));
577 }
578
579 void free_sftp_dirents(SFTP_DIRENT **s)
580 {
581 int i;
582
583 for (i = 0; s[i]; i++) {
584 xfree(s[i]->filename);
585 xfree(s[i]->longname);
586 xfree(s[i]);
587 }
588 xfree(s);
589 }
590
591 int
592 do_rm(struct sftp_conn *conn, char *path)
593 {
594 u_int status, id;
595
596 debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
597
598 id = conn->msg_id++;
599 send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
600 status = get_status(conn, id);
601 if (status != SSH2_FX_OK)
602 error("Couldn't delete file: %s", fx2txt(status));
603 return(status);
604 }
605
606 int
607 do_mkdir(struct sftp_conn *conn, char *path, Attrib *a, int printflag)
608 {
609 u_int status, id;
610
611 id = conn->msg_id++;
612 send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
613 strlen(path), a);
614
615 status = get_status(conn, id);
616 if (status != SSH2_FX_OK && printflag)
617 error("Couldn't create directory: %s", fx2txt(status));
618
619 return(status);
620 }
621
622 int
623 do_rmdir(struct sftp_conn *conn, char *path)
624 {
625 u_int status, id;
626
627 id = conn->msg_id++;
628 send_string_request(conn, id, SSH2_FXP_RMDIR, path,
629 strlen(path));
630
631 status = get_status(conn, id);
632 if (status != SSH2_FX_OK)
633 error("Couldn't remove directory: %s", fx2txt(status));
634
635 return(status);
636 }
637
638 Attrib *
639 do_stat(struct sftp_conn *conn, char *path, int quiet)
640 {
641 u_int id;
642
643 id = conn->msg_id++;
644
645 send_string_request(conn, id,
646 conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
647 path, strlen(path));
648
649 return(get_decode_stat(conn, id, quiet));
650 }
651
652 Attrib *
653 do_lstat(struct sftp_conn *conn, char *path, int quiet)
654 {
655 u_int id;
656
657 if (conn->version == 0) {
658 if (quiet)
659 debug("Server version does not support lstat operation");
660 else
661 logit("Server version does not support lstat operation");
662 return(do_stat(conn, path, quiet));
663 }
664
665 id = conn->msg_id++;
666 send_string_request(conn, id, SSH2_FXP_LSTAT, path,
667 strlen(path));
668
669 return(get_decode_stat(conn, id, quiet));
670 }
671
672 #ifdef notyet
673 Attrib *
674 do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet)
675 {
676 u_int id;
677
678 id = conn->msg_id++;
679 send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
680 handle_len);
681
682 return(get_decode_stat(conn, id, quiet));
683 }
684 #endif
685
686 int
687 do_setstat(struct sftp_conn *conn, char *path, Attrib *a)
688 {
689 u_int status, id;
690
691 id = conn->msg_id++;
692 send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
693 strlen(path), a);
694
695 status = get_status(conn, id);
696 if (status != SSH2_FX_OK)
697 error("Couldn't setstat on \"%s\": %s", path,
698 fx2txt(status));
699
700 return(status);
701 }
702
703 int
704 do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len,
705 Attrib *a)
706 {
707 u_int status, id;
708
709 id = conn->msg_id++;
710 send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
711 handle_len, a);
712
713 status = get_status(conn, id);
714 if (status != SSH2_FX_OK)
715 error("Couldn't fsetstat: %s", fx2txt(status));
716
717 return(status);
718 }
719
720 char *
721 do_realpath(struct sftp_conn *conn, char *path)
722 {
723 Buffer msg;
724 u_int type, expected_id, count, id;
725 char *filename, *longname;
726 Attrib *a;
727
728 expected_id = id = conn->msg_id++;
729 send_string_request(conn, id, SSH2_FXP_REALPATH, path,
730 strlen(path));
731
732 buffer_init(&msg);
733
734 get_msg(conn, &msg);
735 type = buffer_get_char(&msg);
736 id = buffer_get_int(&msg);
737
738 if (id != expected_id)
739 fatal("ID mismatch (%u != %u)", id, expected_id);
740
741 if (type == SSH2_FXP_STATUS) {
742 u_int status = buffer_get_int(&msg);
743
744 error("Couldn't canonicalise: %s", fx2txt(status));
745 buffer_free(&msg);
746 return NULL;
747 } else if (type != SSH2_FXP_NAME)
748 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
749 SSH2_FXP_NAME, type);
750
751 count = buffer_get_int(&msg);
752 if (count != 1)
753 fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
754
755 filename = buffer_get_string(&msg, NULL);
756 longname = buffer_get_string(&msg, NULL);
757 a = decode_attrib(&msg);
758
759 debug3("SSH_FXP_REALPATH %s -> %s", path, filename);
760
761 xfree(longname);
762
763 buffer_free(&msg);
764
765 return(filename);
766 }
767
768 int
769 do_rename(struct sftp_conn *conn, char *oldpath, char *newpath)
770 {
771 Buffer msg;
772 u_int status, id;
773
774 buffer_init(&msg);
775
776 /* Send rename request */
777 id = conn->msg_id++;
778 if ((conn->exts & SFTP_EXT_POSIX_RENAME)) {
779 buffer_put_char(&msg, SSH2_FXP_EXTENDED);
780 buffer_put_int(&msg, id);
781 buffer_put_cstring(&msg, "posix-rename@openssh.com");
782 } else {
783 buffer_put_char(&msg, SSH2_FXP_RENAME);
784 buffer_put_int(&msg, id);
785 }
786 buffer_put_cstring(&msg, oldpath);
787 buffer_put_cstring(&msg, newpath);
788 send_msg(conn, &msg);
789 debug3("Sent message %s \"%s\" -> \"%s\"",
790 (conn->exts & SFTP_EXT_POSIX_RENAME) ? "posix-rename@openssh.com" :
791 "SSH2_FXP_RENAME", oldpath, newpath);
792 buffer_free(&msg);
793
794 status = get_status(conn, id);
795 if (status != SSH2_FX_OK)
796 error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
797 newpath, fx2txt(status));
798
799 return(status);
800 }
801
802 int
803 do_hardlink(struct sftp_conn *conn, char *oldpath, char *newpath)
804 {
805 Buffer msg;
806 u_int status, id;
807
808 buffer_init(&msg);
809
810 /* Send link request */
811 id = conn->msg_id++;
812 if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
813 error("Server does not support hardlink@openssh.com extension");
814 return -1;
815 }
816
817 buffer_put_char(&msg, SSH2_FXP_EXTENDED);
818 buffer_put_int(&msg, id);
819 buffer_put_cstring(&msg, "hardlink@openssh.com");
820 buffer_put_cstring(&msg, oldpath);
821 buffer_put_cstring(&msg, newpath);
822 send_msg(conn, &msg);
823 debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
824 oldpath, newpath);
825 buffer_free(&msg);
826
827 status = get_status(conn, id);
828 if (status != SSH2_FX_OK)
829 error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
830 newpath, fx2txt(status));
831
832 return(status);
833 }
834
835 int
836 do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath)
837 {
838 Buffer msg;
839 u_int status, id;
840
841 if (conn->version < 3) {
842 error("This server does not support the symlink operation");
843 return(SSH2_FX_OP_UNSUPPORTED);
844 }
845
846 buffer_init(&msg);
847
848 /* Send symlink request */
849 id = conn->msg_id++;
850 buffer_put_char(&msg, SSH2_FXP_SYMLINK);
851 buffer_put_int(&msg, id);
852 buffer_put_cstring(&msg, oldpath);
853 buffer_put_cstring(&msg, newpath);
854 send_msg(conn, &msg);
855 debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
856 newpath);
857 buffer_free(&msg);
858
859 status = get_status(conn, id);
860 if (status != SSH2_FX_OK)
861 error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
862 newpath, fx2txt(status));
863
864 return(status);
865 }
866
867 #ifdef notyet
868 char *
869 do_readlink(struct sftp_conn *conn, char *path)
870 {
871 Buffer msg;
872 u_int type, expected_id, count, id;
873 char *filename, *longname;
874 Attrib *a;
875
876 expected_id = id = conn->msg_id++;
877 send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
878
879 buffer_init(&msg);
880
881 get_msg(conn, &msg);
882 type = buffer_get_char(&msg);
883 id = buffer_get_int(&msg);
884
885 if (id != expected_id)
886 fatal("ID mismatch (%u != %u)", id, expected_id);
887
888 if (type == SSH2_FXP_STATUS) {
889 u_int status = buffer_get_int(&msg);
890
891 error("Couldn't readlink: %s", fx2txt(status));
892 return(NULL);
893 } else if (type != SSH2_FXP_NAME)
894 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
895 SSH2_FXP_NAME, type);
896
897 count = buffer_get_int(&msg);
898 if (count != 1)
899 fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
900
901 filename = buffer_get_string(&msg, NULL);
902 longname = buffer_get_string(&msg, NULL);
903 a = decode_attrib(&msg);
904
905 debug3("SSH_FXP_READLINK %s -> %s", path, filename);
906
907 xfree(longname);
908
909 buffer_free(&msg);
910
911 return(filename);
912 }
913 #endif
914
915 int
916 do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
917 int quiet)
918 {
919 Buffer msg;
920 u_int id;
921
922 if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
923 error("Server does not support statvfs@openssh.com extension");
924 return -1;
925 }
926
927 id = conn->msg_id++;
928
929 buffer_init(&msg);
930 buffer_clear(&msg);
931 buffer_put_char(&msg, SSH2_FXP_EXTENDED);
932 buffer_put_int(&msg, id);
933 buffer_put_cstring(&msg, "statvfs@openssh.com");
934 buffer_put_cstring(&msg, path);
935 send_msg(conn, &msg);
936 buffer_free(&msg);
937
938 return get_decode_statvfs(conn, st, id, quiet);
939 }
940
941 #ifdef notyet
942 int
943 do_fstatvfs(struct sftp_conn *conn, const char *handle, u_int handle_len,
944 struct sftp_statvfs *st, int quiet)
945 {
946 Buffer msg;
947 u_int id;
948
949 if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
950 error("Server does not support fstatvfs@openssh.com extension");
951 return -1;
952 }
953
954 id = conn->msg_id++;
955
956 buffer_init(&msg);
957 buffer_clear(&msg);
958 buffer_put_char(&msg, SSH2_FXP_EXTENDED);
959 buffer_put_int(&msg, id);
960 buffer_put_cstring(&msg, "fstatvfs@openssh.com");
961 buffer_put_string(&msg, handle, handle_len);
962 send_msg(conn, &msg);
963 buffer_free(&msg);
964
965 return get_decode_statvfs(conn, st, id, quiet);
966 }
967 #endif
968
969 static void
970 send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
971 u_int len, char *handle, u_int handle_len)
972 {
973 Buffer msg;
974
975 buffer_init(&msg);
976 buffer_clear(&msg);
977 buffer_put_char(&msg, SSH2_FXP_READ);
978 buffer_put_int(&msg, id);
979 buffer_put_string(&msg, handle, handle_len);
980 buffer_put_int64(&msg, offset);
981 buffer_put_int(&msg, len);
982 send_msg(conn, &msg);
983 buffer_free(&msg);
984 }
985
986 int
987 do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
988 Attrib *a, int pflag)
989 {
990 Attrib junk;
991 Buffer msg;
992 char *handle;
993 int local_fd, status = 0, write_error;
994 int read_error, write_errno;
995 u_int64_t offset, size;
996 u_int handle_len, mode, type, id, buflen, num_req, max_req;
997 off_t progress_counter;
998 struct request {
999 u_int id;
1000 u_int len;
1001 u_int64_t offset;
1002 TAILQ_ENTRY(request) tq;
1003 };
1004 TAILQ_HEAD(reqhead, request) requests;
1005 struct request *req;
1006
1007 TAILQ_INIT(&requests);
1008
1009 if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1010 return -1;
1011
1012 /* Do not preserve set[ug]id here, as we do not preserve ownership */
1013 if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1014 mode = a->perm & 0777;
1015 else
1016 mode = 0666;
1017
1018 if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1019 (!S_ISREG(a->perm))) {
1020 error("Cannot download non-regular file: %s", remote_path);
1021 return(-1);
1022 }
1023
1024 if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1025 size = a->size;
1026 else
1027 size = 0;
1028
1029 buflen = conn->transfer_buflen;
1030 buffer_init(&msg);
1031
1032 /* Send open request */
1033 id = conn->msg_id++;
1034 buffer_put_char(&msg, SSH2_FXP_OPEN);
1035 buffer_put_int(&msg, id);
1036 buffer_put_cstring(&msg, remote_path);
1037 buffer_put_int(&msg, SSH2_FXF_READ);
1038 attrib_clear(&junk); /* Send empty attributes */
1039 encode_attrib(&msg, &junk);
1040 send_msg(conn, &msg);
1041 debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1042
1043 handle = get_handle(conn, id, &handle_len,
1044 "remote open(\"%s\")", remote_path);
1045 if (handle == NULL) {
1046 buffer_free(&msg);
1047 return(-1);
1048 }
1049
1050 local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC,
1051 mode | S_IWRITE);
1052 if (local_fd == -1) {
1053 error("Couldn't open local file \"%s\" for writing: %s",
1054 local_path, strerror(errno));
1055 do_close(conn, handle, handle_len);
1056 buffer_free(&msg);
1057 xfree(handle);
1058 return(-1);
1059 }
1060
1061 /* Read from remote and write to local */
1062 write_error = read_error = write_errno = num_req = offset = 0;
1063 max_req = 1;
1064 progress_counter = 0;
1065
1066 if (showprogress && size != 0)
1067 start_progress_meter(remote_path, size, &progress_counter);
1068
1069 while (num_req > 0 || max_req > 0) {
1070 char *data;
1071 u_int len;
1072
1073 /*
1074 * Simulate EOF on interrupt: stop sending new requests and
1075 * allow outstanding requests to drain gracefully
1076 */
1077 if (interrupted) {
1078 if (num_req == 0) /* If we haven't started yet... */
1079 break;
1080 max_req = 0;
1081 }
1082
1083 /* Send some more requests */
1084 while (num_req < max_req) {
1085 debug3("Request range %llu -> %llu (%d/%d)",
1086 (unsigned long long)offset,
1087 (unsigned long long)offset + buflen - 1,
1088 num_req, max_req);
1089 req = xmalloc(sizeof(*req));
1090 req->id = conn->msg_id++;
1091 req->len = buflen;
1092 req->offset = offset;
1093 offset += buflen;
1094 num_req++;
1095 TAILQ_INSERT_TAIL(&requests, req, tq);
1096 send_read_request(conn, req->id, req->offset,
1097 req->len, handle, handle_len);
1098 }
1099
1100 buffer_clear(&msg);
1101 get_msg(conn, &msg);
1102 type = buffer_get_char(&msg);
1103 id = buffer_get_int(&msg);
1104 debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1105
1106 /* Find the request in our queue */
1107 for (req = TAILQ_FIRST(&requests);
1108 req != NULL && req->id != id;
1109 req = TAILQ_NEXT(req, tq))
1110 ;
1111 if (req == NULL)
1112 fatal("Unexpected reply %u", id);
1113
1114 switch (type) {
1115 case SSH2_FXP_STATUS:
1116 status = buffer_get_int(&msg);
1117 if (status != SSH2_FX_EOF)
1118 read_error = 1;
1119 max_req = 0;
1120 TAILQ_REMOVE(&requests, req, tq);
1121 xfree(req);
1122 num_req--;
1123 break;
1124 case SSH2_FXP_DATA:
1125 data = buffer_get_string(&msg, &len);
1126 debug3("Received data %llu -> %llu",
1127 (unsigned long long)req->offset,
1128 (unsigned long long)req->offset + len - 1);
1129 if (len > req->len)
1130 fatal("Received more data than asked for "
1131 "%u > %u", len, req->len);
1132 if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1133 atomicio(vwrite, local_fd, data, len) != len) &&
1134 !write_error) {
1135 write_errno = errno;
1136 write_error = 1;
1137 max_req = 0;
1138 }
1139 progress_counter += len;
1140 xfree(data);
1141
1142 if (len == req->len) {
1143 TAILQ_REMOVE(&requests, req, tq);
1144 xfree(req);
1145 num_req--;
1146 } else {
1147 /* Resend the request for the missing data */
1148 debug3("Short data block, re-requesting "
1149 "%llu -> %llu (%2d)",
1150 (unsigned long long)req->offset + len,
1151 (unsigned long long)req->offset +
1152 req->len - 1, num_req);
1153 req->id = conn->msg_id++;
1154 req->len -= len;
1155 req->offset += len;
1156 send_read_request(conn, req->id,
1157 req->offset, req->len, handle, handle_len);
1158 /* Reduce the request size */
1159 if (len < buflen)
1160 buflen = MAX(MIN_READ_SIZE, len);
1161 }
1162 if (max_req > 0) { /* max_req = 0 iff EOF received */
1163 if (size > 0 && offset > size) {
1164 /* Only one request at a time
1165 * after the expected EOF */
1166 debug3("Finish at %llu (%2d)",
1167 (unsigned long long)offset,
1168 num_req);
1169 max_req = 1;
1170 } else if (max_req <= conn->num_requests) {
1171 ++max_req;
1172 }
1173 }
1174 break;
1175 default:
1176 fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1177 SSH2_FXP_DATA, type);
1178 }
1179 }
1180
1181 if (showprogress && size)
1182 stop_progress_meter();
1183
1184 /* Sanity check */
1185 if (TAILQ_FIRST(&requests) != NULL)
1186 fatal("Transfer complete, but requests still in queue");
1187
1188 if (read_error) {
1189 error("Couldn't read from remote file \"%s\" : %s",
1190 remote_path, fx2txt(status));
1191 do_close(conn, handle, handle_len);
1192 } else if (write_error) {
1193 error("Couldn't write to \"%s\": %s", local_path,
1194 strerror(write_errno));
1195 status = -1;
1196 do_close(conn, handle, handle_len);
1197 } else {
1198 status = do_close(conn, handle, handle_len);
1199
1200 /* Override umask and utimes if asked */
1201 #ifdef HAVE_FCHMOD
1202 if (pflag && fchmod(local_fd, mode) == -1)
1203 #else
1204 if (pflag && chmod(local_path, mode) == -1)
1205 #endif /* HAVE_FCHMOD */
1206 error("Couldn't set mode on \"%s\": %s", local_path,
1207 strerror(errno));
1208 if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1209 struct timeval tv[2];
1210 tv[0].tv_sec = a->atime;
1211 tv[1].tv_sec = a->mtime;
1212 tv[0].tv_usec = tv[1].tv_usec = 0;
1213 if (utimes(local_path, tv) == -1)
1214 error("Can't set times on \"%s\": %s",
1215 local_path, strerror(errno));
1216 }
1217 }
1218 close(local_fd);
1219 buffer_free(&msg);
1220 xfree(handle);
1221
1222 return(status);
1223 }
1224
1225 static int
1226 download_dir_internal(struct sftp_conn *conn, char *src, char *dst,
1227 Attrib *dirattrib, int pflag, int printflag, int depth)
1228 {
1229 int i, ret = 0;
1230 SFTP_DIRENT **dir_entries;
1231 char *filename, *new_src, *new_dst;
1232 mode_t mode = 0777;
1233
1234 if (depth >= MAX_DIR_DEPTH) {
1235 error("Maximum directory depth exceeded: %d levels", depth);
1236 return -1;
1237 }
1238
1239 if (dirattrib == NULL &&
1240 (dirattrib = do_stat(conn, src, 1)) == NULL) {
1241 error("Unable to stat remote directory \"%s\"", src);
1242 return -1;
1243 }
1244 if (!S_ISDIR(dirattrib->perm)) {
1245 error("\"%s\" is not a directory", src);
1246 return -1;
1247 }
1248 if (printflag)
1249 printf("Retrieving %s\n", src);
1250
1251 if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1252 mode = dirattrib->perm & 01777;
1253 else {
1254 debug("Server did not send permissions for "
1255 "directory \"%s\"", dst);
1256 }
1257
1258 if (mkdir(dst, mode) == -1 && errno != EEXIST) {
1259 error("mkdir %s: %s", dst, strerror(errno));
1260 return -1;
1261 }
1262
1263 if (do_readdir(conn, src, &dir_entries) == -1) {
1264 error("%s: Failed to get directory contents", src);
1265 return -1;
1266 }
1267
1268 for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1269 filename = dir_entries[i]->filename;
1270
1271 new_dst = path_append(dst, filename);
1272 new_src = path_append(src, filename);
1273
1274 if (S_ISDIR(dir_entries[i]->a.perm)) {
1275 if (strcmp(filename, ".") == 0 ||
1276 strcmp(filename, "..") == 0)
1277 continue;
1278 if (download_dir_internal(conn, new_src, new_dst,
1279 &(dir_entries[i]->a), pflag, printflag,
1280 depth + 1) == -1)
1281 ret = -1;
1282 } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1283 if (do_download(conn, new_src, new_dst,
1284 &(dir_entries[i]->a), pflag) == -1) {
1285 error("Download of file %s to %s failed",
1286 new_src, new_dst);
1287 ret = -1;
1288 }
1289 } else
1290 logit("%s: not a regular file\n", new_src);
1291
1292 xfree(new_dst);
1293 xfree(new_src);
1294 }
1295
1296 if (pflag) {
1297 if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1298 struct timeval tv[2];
1299 tv[0].tv_sec = dirattrib->atime;
1300 tv[1].tv_sec = dirattrib->mtime;
1301 tv[0].tv_usec = tv[1].tv_usec = 0;
1302 if (utimes(dst, tv) == -1)
1303 error("Can't set times on \"%s\": %s",
1304 dst, strerror(errno));
1305 } else
1306 debug("Server did not send times for directory "
1307 "\"%s\"", dst);
1308 }
1309
1310 free_sftp_dirents(dir_entries);
1311
1312 return ret;
1313 }
1314
1315 int
1316 download_dir(struct sftp_conn *conn, char *src, char *dst,
1317 Attrib *dirattrib, int pflag, int printflag)
1318 {
1319 char *src_canon;
1320 int ret;
1321
1322 if ((src_canon = do_realpath(conn, src)) == NULL) {
1323 error("Unable to canonicalise path \"%s\"", src);
1324 return -1;
1325 }
1326
1327 ret = download_dir_internal(conn, src_canon, dst,
1328 dirattrib, pflag, printflag, 0);
1329 xfree(src_canon);
1330 return ret;
1331 }
1332
1333 int
1334 do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
1335 int pflag)
1336 {
1337 int local_fd;
1338 int status = SSH2_FX_OK;
1339 u_int handle_len, id, type;
1340 off_t offset;
1341 char *handle, *data;
1342 Buffer msg;
1343 struct stat sb;
1344 Attrib a;
1345 u_int32_t startid;
1346 u_int32_t ackid;
1347 struct outstanding_ack {
1348 u_int id;
1349 u_int len;
1350 off_t offset;
1351 TAILQ_ENTRY(outstanding_ack) tq;
1352 };
1353 TAILQ_HEAD(ackhead, outstanding_ack) acks;
1354 struct outstanding_ack *ack = NULL;
1355
1356 TAILQ_INIT(&acks);
1357
1358 if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1359 error("Couldn't open local file \"%s\" for reading: %s",
1360 local_path, strerror(errno));
1361 return(-1);
1362 }
1363 if (fstat(local_fd, &sb) == -1) {
1364 error("Couldn't fstat local file \"%s\": %s",
1365 local_path, strerror(errno));
1366 close(local_fd);
1367 return(-1);
1368 }
1369 if (!S_ISREG(sb.st_mode)) {
1370 error("%s is not a regular file", local_path);
1371 close(local_fd);
1372 return(-1);
1373 }
1374 stat_to_attrib(&sb, &a);
1375
1376 a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1377 a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1378 a.perm &= 0777;
1379 if (!pflag)
1380 a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1381
1382 buffer_init(&msg);
1383
1384 /* Send open request */
1385 id = conn->msg_id++;
1386 buffer_put_char(&msg, SSH2_FXP_OPEN);
1387 buffer_put_int(&msg, id);
1388 buffer_put_cstring(&msg, remote_path);
1389 buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC);
1390 encode_attrib(&msg, &a);
1391 send_msg(conn, &msg);
1392 debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1393
1394 buffer_clear(&msg);
1395
1396 handle = get_handle(conn, id, &handle_len,
1397 "remote open(\"%s\")", remote_path);
1398 if (handle == NULL) {
1399 close(local_fd);
1400 buffer_free(&msg);
1401 return -1;
1402 }
1403
1404 startid = ackid = id + 1;
1405 data = xmalloc(conn->transfer_buflen);
1406
1407 /* Read from local and write to remote */
1408 offset = 0;
1409 if (showprogress)
1410 start_progress_meter(local_path, sb.st_size, &offset);
1411
1412 for (;;) {
1413 int len;
1414
1415 /*
1416 * Can't use atomicio here because it returns 0 on EOF,
1417 * thus losing the last block of the file.
1418 * Simulate an EOF on interrupt, allowing ACKs from the
1419 * server to drain.
1420 */
1421 if (interrupted || status != SSH2_FX_OK)
1422 len = 0;
1423 else do
1424 len = read(local_fd, data, conn->transfer_buflen);
1425 while ((len == -1) &&
1426 (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
1427
1428 if (len == -1)
1429 fatal("Couldn't read from \"%s\": %s", local_path,
1430 strerror(errno));
1431
1432 if (len != 0) {
1433 ack = xmalloc(sizeof(*ack));
1434 ack->id = ++id;
1435 ack->offset = offset;
1436 ack->len = len;
1437 TAILQ_INSERT_TAIL(&acks, ack, tq);
1438
1439 buffer_clear(&msg);
1440 buffer_put_char(&msg, SSH2_FXP_WRITE);
1441 buffer_put_int(&msg, ack->id);
1442 buffer_put_string(&msg, handle, handle_len);
1443 buffer_put_int64(&msg, offset);
1444 buffer_put_string(&msg, data, len);
1445 send_msg(conn, &msg);
1446 debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1447 id, (unsigned long long)offset, len);
1448 } else if (TAILQ_FIRST(&acks) == NULL)
1449 break;
1450
1451 if (ack == NULL)
1452 fatal("Unexpected ACK %u", id);
1453
1454 if (id == startid || len == 0 ||
1455 id - ackid >= conn->num_requests) {
1456 u_int r_id;
1457
1458 buffer_clear(&msg);
1459 get_msg(conn, &msg);
1460 type = buffer_get_char(&msg);
1461 r_id = buffer_get_int(&msg);
1462
1463 if (type != SSH2_FXP_STATUS)
1464 fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1465 "got %d", SSH2_FXP_STATUS, type);
1466
1467 status = buffer_get_int(&msg);
1468 debug3("SSH2_FXP_STATUS %d", status);
1469
1470 /* Find the request in our queue */
1471 for (ack = TAILQ_FIRST(&acks);
1472 ack != NULL && ack->id != r_id;
1473 ack = TAILQ_NEXT(ack, tq))
1474 ;
1475 if (ack == NULL)
1476 fatal("Can't find request for ID %u", r_id);
1477 TAILQ_REMOVE(&acks, ack, tq);
1478 debug3("In write loop, ack for %u %u bytes at %lld",
1479 ack->id, ack->len, (long long)ack->offset);
1480 ++ackid;
1481 xfree(ack);
1482 }
1483 offset += len;
1484 if (offset < 0)
1485 fatal("%s: offset < 0", __func__);
1486 }
1487 buffer_free(&msg);
1488
1489 if (showprogress)
1490 stop_progress_meter();
1491 xfree(data);
1492
1493 if (status != SSH2_FX_OK) {
1494 error("Couldn't write to remote file \"%s\": %s",
1495 remote_path, fx2txt(status));
1496 status = -1;
1497 }
1498
1499 if (close(local_fd) == -1) {
1500 error("Couldn't close local file \"%s\": %s", local_path,
1501 strerror(errno));
1502 status = -1;
1503 }
1504
1505 /* Override umask and utimes if asked */
1506 if (pflag)
1507 do_fsetstat(conn, handle, handle_len, &a);
1508
1509 if (do_close(conn, handle, handle_len) != SSH2_FX_OK)
1510 status = -1;
1511 xfree(handle);
1512
1513 return status;
1514 }
1515
1516 static int
1517 upload_dir_internal(struct sftp_conn *conn, char *src, char *dst,
1518 int pflag, int printflag, int depth)
1519 {
1520 int ret = 0, status;
1521 DIR *dirp;
1522 struct dirent *dp;
1523 char *filename, *new_src, *new_dst;
1524 struct stat sb;
1525 Attrib a;
1526
1527 if (depth >= MAX_DIR_DEPTH) {
1528 error("Maximum directory depth exceeded: %d levels", depth);
1529 return -1;
1530 }
1531
1532 if (stat(src, &sb) == -1) {
1533 error("Couldn't stat directory \"%s\": %s",
1534 src, strerror(errno));
1535 return -1;
1536 }
1537 if (!S_ISDIR(sb.st_mode)) {
1538 error("\"%s\" is not a directory", src);
1539 return -1;
1540 }
1541 if (printflag)
1542 printf("Entering %s\n", src);
1543
1544 attrib_clear(&a);
1545 stat_to_attrib(&sb, &a);
1546 a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1547 a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1548 a.perm &= 01777;
1549 if (!pflag)
1550 a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1551
1552 status = do_mkdir(conn, dst, &a, 0);
1553 /*
1554 * we lack a portable status for errno EEXIST,
1555 * so if we get a SSH2_FX_FAILURE back we must check
1556 * if it was created successfully.
1557 */
1558 if (status != SSH2_FX_OK) {
1559 if (status != SSH2_FX_FAILURE)
1560 return -1;
1561 if (do_stat(conn, dst, 0) == NULL)
1562 return -1;
1563 }
1564
1565 if ((dirp = opendir(src)) == NULL) {
1566 error("Failed to open dir \"%s\": %s", src, strerror(errno));
1567 return -1;
1568 }
1569
1570 while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1571 if (dp->d_ino == 0)
1572 continue;
1573 filename = dp->d_name;
1574 new_dst = path_append(dst, filename);
1575 new_src = path_append(src, filename);
1576
1577 if (lstat(new_src, &sb) == -1) {
1578 logit("%s: lstat failed: %s", filename,
1579 strerror(errno));
1580 ret = -1;
1581 } else if (S_ISDIR(sb.st_mode)) {
1582 if (strcmp(filename, ".") == 0 ||
1583 strcmp(filename, "..") == 0)
1584 continue;
1585
1586 if (upload_dir_internal(conn, new_src, new_dst,
1587 pflag, printflag, depth + 1) == -1)
1588 ret = -1;
1589 } else if (S_ISREG(sb.st_mode)) {
1590 if (do_upload(conn, new_src, new_dst, pflag) == -1) {
1591 error("Uploading of file %s to %s failed!",
1592 new_src, new_dst);
1593 ret = -1;
1594 }
1595 } else
1596 logit("%s: not a regular file\n", filename);
1597 xfree(new_dst);
1598 xfree(new_src);
1599 }
1600
1601 do_setstat(conn, dst, &a);
1602
1603 (void) closedir(dirp);
1604 return ret;
1605 }
1606
1607 int
1608 upload_dir(struct sftp_conn *conn, char *src, char *dst, int printflag,
1609 int pflag)
1610 {
1611 char *dst_canon;
1612 int ret;
1613
1614 if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1615 error("Unable to canonicalise path \"%s\"", dst);
1616 return -1;
1617 }
1618
1619 ret = upload_dir_internal(conn, src, dst_canon, pflag, printflag, 0);
1620 xfree(dst_canon);
1621 return ret;
1622 }
1623
1624 char *
1625 path_append(char *p1, char *p2)
1626 {
1627 char *ret;
1628 size_t len = strlen(p1) + strlen(p2) + 2;
1629
1630 ret = xmalloc(len);
1631 strlcpy(ret, p1, len);
1632 if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1633 strlcat(ret, "/", len);
1634 strlcat(ret, p2, len);
1635
1636 return(ret);
1637 }
1638
A clone of openssh git repository