1 /* $OpenBSD: sftp-client.c,v 1.126 2017/01/03 05:46:51 djm Exp $ */
3 * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
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.
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.
19 /* XXX: signed vs unsigned */
20 /* XXX: remove all logging, only return status codes */
21 /* XXX: copy between two remote sites */
25 #include <sys/types.h>
26 #ifdef HAVE_SYS_STATVFS_H
27 #include <sys/statvfs.h>
29 #include "openbsd-compat/sys-queue.h"
30 #ifdef HAVE_SYS_STAT_H
31 # include <sys/stat.h>
33 #ifdef HAVE_SYS_TIME_H
34 # include <sys/time.h>
53 #include "progressmeter.h"
58 #include "sftp-common.h"
59 #include "sftp-client.h"
61 extern volatile sig_atomic_t interrupted;
62 extern int showprogress;
64 /* Minimum amount of data to read at a time */
65 #define MIN_READ_SIZE 512
67 /* Maximum depth to descend in directory trees */
68 #define MAX_DIR_DEPTH 64
70 /* Directory separator characters */
72 # define SFTP_DIRECTORY_CHARS "/\\"
73 #else /* HAVE_CYGWIN */
74 # define SFTP_DIRECTORY_CHARS "/"
75 #endif /* HAVE_CYGWIN */
80 u_int transfer_buflen;
84 #define SFTP_EXT_POSIX_RENAME 0x00000001
85 #define SFTP_EXT_STATVFS 0x00000002
86 #define SFTP_EXT_FSTATVFS 0x00000004
87 #define SFTP_EXT_HARDLINK 0x00000008
88 #define SFTP_EXT_FSYNC 0x00000010
91 struct bwlimit bwlimit_in, bwlimit_out;
95 get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
96 const char *errfmt, ...) __attribute__((format(printf, 4, 5)));
100 sftpio(void *_bwlimit, size_t amount)
102 struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit;
104 bandwidth_limit(bwlimit, amount);
109 send_msg(struct sftp_conn *conn, struct sshbuf *m)
114 if (sshbuf_len(m) > SFTP_MAX_MSG_LENGTH)
115 fatal("Outbound message too long %zu", sshbuf_len(m));
117 /* Send length first */
118 put_u32(mlen, sshbuf_len(m));
119 iov[0].iov_base = mlen;
120 iov[0].iov_len = sizeof(mlen);
121 iov[1].iov_base = (u_char *)sshbuf_ptr(m);
122 iov[1].iov_len = sshbuf_len(m);
124 if (atomiciov6(writev, conn->fd_out, iov, 2,
125 conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_out) !=
126 sshbuf_len(m) + sizeof(mlen))
127 fatal("Couldn't send packet: %s", strerror(errno));
133 get_msg(struct sftp_conn *conn, struct sshbuf *m)
139 if ((r = sshbuf_reserve(m, 4, &p)) != 0)
140 fatal("%s: buffer error: %s", __func__, ssh_err(r));
141 if (atomicio6(read, conn->fd_in, p, 4,
142 conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in) != 4) {
144 fatal("Connection closed");
146 fatal("Couldn't read packet: %s", strerror(errno));
149 if ((r = sshbuf_get_u32(m, &msg_len)) != 0)
150 fatal("%s: buffer error: %s", __func__, ssh_err(r));
151 if (msg_len > SFTP_MAX_MSG_LENGTH)
152 fatal("Received message too long %u", msg_len);
154 if ((r = sshbuf_reserve(m, msg_len, &p)) != 0)
155 fatal("%s: buffer error: %s", __func__, ssh_err(r));
156 if (atomicio6(read, conn->fd_in, p, msg_len,
157 conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in)
160 fatal("Connection closed");
162 fatal("Read packet: %s", strerror(errno));
167 send_string_request(struct sftp_conn *conn, u_int id, u_int code, const char *s,
173 if ((msg = sshbuf_new()) == NULL)
174 fatal("%s: sshbuf_new failed", __func__);
175 if ((r = sshbuf_put_u8(msg, code)) != 0 ||
176 (r = sshbuf_put_u32(msg, id)) != 0 ||
177 (r = sshbuf_put_string(msg, s, len)) != 0)
178 fatal("%s: buffer error: %s", __func__, ssh_err(r));
180 debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
185 send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
186 const void *s, u_int len, Attrib *a)
191 if ((msg = sshbuf_new()) == NULL)
192 fatal("%s: sshbuf_new failed", __func__);
193 if ((r = sshbuf_put_u8(msg, code)) != 0 ||
194 (r = sshbuf_put_u32(msg, id)) != 0 ||
195 (r = sshbuf_put_string(msg, s, len)) != 0 ||
196 (r = encode_attrib(msg, a)) != 0)
197 fatal("%s: buffer error: %s", __func__, ssh_err(r));
199 debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
204 get_status(struct sftp_conn *conn, u_int expected_id)
211 if ((msg = sshbuf_new()) == NULL)
212 fatal("%s: sshbuf_new failed", __func__);
214 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
215 (r = sshbuf_get_u32(msg, &id)) != 0)
216 fatal("%s: buffer error: %s", __func__, ssh_err(r));
218 if (id != expected_id)
219 fatal("ID mismatch (%u != %u)", id, expected_id);
220 if (type != SSH2_FXP_STATUS)
221 fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
222 SSH2_FXP_STATUS, type);
224 if ((r = sshbuf_get_u32(msg, &status)) != 0)
225 fatal("%s: buffer error: %s", __func__, ssh_err(r));
228 debug3("SSH2_FXP_STATUS %u", status);
234 get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
235 const char *errfmt, ...)
245 va_start(args, errfmt);
247 vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
250 if ((msg = sshbuf_new()) == NULL)
251 fatal("%s: sshbuf_new failed", __func__);
253 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
254 (r = sshbuf_get_u32(msg, &id)) != 0)
255 fatal("%s: buffer error: %s", __func__, ssh_err(r));
257 if (id != expected_id)
258 fatal("%s: ID mismatch (%u != %u)",
259 errfmt == NULL ? __func__ : errmsg, id, expected_id);
260 if (type == SSH2_FXP_STATUS) {
261 if ((r = sshbuf_get_u32(msg, &status)) != 0)
262 fatal("%s: buffer error: %s", __func__, ssh_err(r));
264 error("%s: %s", errmsg, fx2txt(status));
267 } else if (type != SSH2_FXP_HANDLE)
268 fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
269 errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
271 if ((r = sshbuf_get_string(msg, &handle, len)) != 0)
272 fatal("%s: buffer error: %s", __func__, ssh_err(r));
279 get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
287 if ((msg = sshbuf_new()) == NULL)
288 fatal("%s: sshbuf_new failed", __func__);
291 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
292 (r = sshbuf_get_u32(msg, &id)) != 0)
293 fatal("%s: buffer error: %s", __func__, ssh_err(r));
295 debug3("Received stat reply T:%u I:%u", type, id);
296 if (id != expected_id)
297 fatal("ID mismatch (%u != %u)", id, expected_id);
298 if (type == SSH2_FXP_STATUS) {
301 if ((r = sshbuf_get_u32(msg, &status)) != 0)
302 fatal("%s: buffer error: %s", __func__, ssh_err(r));
304 debug("Couldn't stat remote file: %s", fx2txt(status));
306 error("Couldn't stat remote file: %s", fx2txt(status));
309 } else if (type != SSH2_FXP_ATTRS) {
310 fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
311 SSH2_FXP_ATTRS, type);
313 if ((r = decode_attrib(msg, &a)) != 0) {
314 error("%s: couldn't decode attrib: %s", __func__, ssh_err(r));
324 get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
325 u_int expected_id, int quiet)
333 if ((msg = sshbuf_new()) == NULL)
334 fatal("%s: sshbuf_new failed", __func__);
337 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
338 (r = sshbuf_get_u32(msg, &id)) != 0)
339 fatal("%s: buffer error: %s", __func__, ssh_err(r));
341 debug3("Received statvfs reply T:%u I:%u", type, id);
342 if (id != expected_id)
343 fatal("ID mismatch (%u != %u)", id, expected_id);
344 if (type == SSH2_FXP_STATUS) {
347 if ((r = sshbuf_get_u32(msg, &status)) != 0)
348 fatal("%s: buffer error: %s", __func__, ssh_err(r));
350 debug("Couldn't statvfs: %s", fx2txt(status));
352 error("Couldn't statvfs: %s", fx2txt(status));
355 } else if (type != SSH2_FXP_EXTENDED_REPLY) {
356 fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
357 SSH2_FXP_EXTENDED_REPLY, type);
360 memset(st, 0, sizeof(*st));
361 if ((r = sshbuf_get_u64(msg, &st->f_bsize)) != 0 ||
362 (r = sshbuf_get_u64(msg, &st->f_frsize)) != 0 ||
363 (r = sshbuf_get_u64(msg, &st->f_blocks)) != 0 ||
364 (r = sshbuf_get_u64(msg, &st->f_bfree)) != 0 ||
365 (r = sshbuf_get_u64(msg, &st->f_bavail)) != 0 ||
366 (r = sshbuf_get_u64(msg, &st->f_files)) != 0 ||
367 (r = sshbuf_get_u64(msg, &st->f_ffree)) != 0 ||
368 (r = sshbuf_get_u64(msg, &st->f_favail)) != 0 ||
369 (r = sshbuf_get_u64(msg, &st->f_fsid)) != 0 ||
370 (r = sshbuf_get_u64(msg, &flag)) != 0 ||
371 (r = sshbuf_get_u64(msg, &st->f_namemax)) != 0)
372 fatal("%s: buffer error: %s", __func__, ssh_err(r));
374 st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
375 st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
383 do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
384 u_int64_t limit_kbps)
388 struct sftp_conn *ret;
391 ret = xcalloc(1, sizeof(*ret));
394 ret->fd_out = fd_out;
395 ret->transfer_buflen = transfer_buflen;
396 ret->num_requests = num_requests;
400 if ((msg = sshbuf_new()) == NULL)
401 fatal("%s: sshbuf_new failed", __func__);
402 if ((r = sshbuf_put_u8(msg, SSH2_FXP_INIT)) != 0 ||
403 (r = sshbuf_put_u32(msg, SSH2_FILEXFER_VERSION)) != 0)
404 fatal("%s: buffer error: %s", __func__, ssh_err(r));
411 /* Expecting a VERSION reply */
412 if ((r = sshbuf_get_u8(msg, &type)) != 0)
413 fatal("%s: buffer error: %s", __func__, ssh_err(r));
414 if (type != SSH2_FXP_VERSION) {
415 error("Invalid packet back from SSH2_FXP_INIT (type %u)",
421 if ((r = sshbuf_get_u32(msg, &ret->version)) != 0)
422 fatal("%s: buffer error: %s", __func__, ssh_err(r));
424 debug2("Remote version: %u", ret->version);
426 /* Check for extensions */
427 while (sshbuf_len(msg) > 0) {
433 if ((r = sshbuf_get_cstring(msg, &name, NULL)) != 0 ||
434 (r = sshbuf_get_string(msg, &value, &vlen)) != 0)
435 fatal("%s: buffer error: %s", __func__, ssh_err(r));
436 if (strcmp(name, "posix-rename@openssh.com") == 0 &&
437 strcmp((char *)value, "1") == 0) {
438 ret->exts |= SFTP_EXT_POSIX_RENAME;
440 } else if (strcmp(name, "statvfs@openssh.com") == 0 &&
441 strcmp((char *)value, "2") == 0) {
442 ret->exts |= SFTP_EXT_STATVFS;
444 } else if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
445 strcmp((char *)value, "2") == 0) {
446 ret->exts |= SFTP_EXT_FSTATVFS;
448 } else if (strcmp(name, "hardlink@openssh.com") == 0 &&
449 strcmp((char *)value, "1") == 0) {
450 ret->exts |= SFTP_EXT_HARDLINK;
452 } else if (strcmp(name, "fsync@openssh.com") == 0 &&
453 strcmp((char *)value, "1") == 0) {
454 ret->exts |= SFTP_EXT_FSYNC;
458 debug2("Server supports extension \"%s\" revision %s",
461 debug2("Unrecognised server extension \"%s\"", name);
469 /* Some filexfer v.0 servers don't support large packets */
470 if (ret->version == 0)
471 ret->transfer_buflen = MINIMUM(ret->transfer_buflen, 20480);
473 ret->limit_kbps = limit_kbps;
474 if (ret->limit_kbps > 0) {
475 bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
476 ret->transfer_buflen);
477 bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
478 ret->transfer_buflen);
485 sftp_proto_version(struct sftp_conn *conn)
487 return conn->version;
491 do_close(struct sftp_conn *conn, const u_char *handle, u_int handle_len)
497 if ((msg = sshbuf_new()) == NULL)
498 fatal("%s: sshbuf_new failed", __func__);
501 if ((r = sshbuf_put_u8(msg, SSH2_FXP_CLOSE)) != 0 ||
502 (r = sshbuf_put_u32(msg, id)) != 0 ||
503 (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
504 fatal("%s: buffer error: %s", __func__, ssh_err(r));
506 debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
508 status = get_status(conn, id);
509 if (status != SSH2_FX_OK)
510 error("Couldn't close file: %s", fx2txt(status));
514 return status == SSH2_FX_OK ? 0 : -1;
519 do_lsreaddir(struct sftp_conn *conn, const char *path, int print_flag,
523 u_int count, id, i, expected_id, ents = 0;
525 u_char type, *handle;
526 int status = SSH2_FX_FAILURE;
534 if ((msg = sshbuf_new()) == NULL)
535 fatal("%s: sshbuf_new failed", __func__);
536 if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPENDIR)) != 0 ||
537 (r = sshbuf_put_u32(msg, id)) != 0 ||
538 (r = sshbuf_put_cstring(msg, path)) != 0)
539 fatal("%s: buffer error: %s", __func__, ssh_err(r));
542 handle = get_handle(conn, id, &handle_len,
543 "remote readdir(\"%s\")", path);
544 if (handle == NULL) {
551 *dir = xcalloc(1, sizeof(**dir));
555 for (; !interrupted;) {
556 id = expected_id = conn->msg_id++;
558 debug3("Sending SSH2_FXP_READDIR I:%u", id);
561 if ((r = sshbuf_put_u8(msg, SSH2_FXP_READDIR)) != 0 ||
562 (r = sshbuf_put_u32(msg, id)) != 0 ||
563 (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
564 fatal("%s: buffer error: %s", __func__, ssh_err(r));
571 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
572 (r = sshbuf_get_u32(msg, &id)) != 0)
573 fatal("%s: buffer error: %s", __func__, ssh_err(r));
575 debug3("Received reply T:%u I:%u", type, id);
577 if (id != expected_id)
578 fatal("ID mismatch (%u != %u)", id, expected_id);
580 if (type == SSH2_FXP_STATUS) {
583 if ((r = sshbuf_get_u32(msg, &rstatus)) != 0)
584 fatal("%s: buffer error: %s",
585 __func__, ssh_err(r));
586 debug3("Received SSH2_FXP_STATUS %d", rstatus);
587 if (rstatus == SSH2_FX_EOF)
589 error("Couldn't read directory: %s", fx2txt(rstatus));
591 } else if (type != SSH2_FXP_NAME)
592 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
593 SSH2_FXP_NAME, type);
595 if ((r = sshbuf_get_u32(msg, &count)) != 0)
596 fatal("%s: buffer error: %s", __func__, ssh_err(r));
597 if (count > SSHBUF_SIZE_MAX)
598 fatal("%s: nonsensical number of entries", __func__);
601 debug3("Received %d SSH2_FXP_NAME responses", count);
602 for (i = 0; i < count; i++) {
603 char *filename, *longname;
606 if ((r = sshbuf_get_cstring(msg, &filename,
608 (r = sshbuf_get_cstring(msg, &longname,
610 fatal("%s: buffer error: %s",
611 __func__, ssh_err(r));
612 if ((r = decode_attrib(msg, &a)) != 0) {
613 error("%s: couldn't decode attrib: %s",
614 __func__, ssh_err(r));
622 mprintf("%s\n", longname);
625 * Directory entries should never contain '/'
626 * These can be used to attack recursive ops
627 * (e.g. send '../../../../etc/passwd')
629 if (strpbrk(filename, SFTP_DIRECTORY_CHARS) != NULL) {
630 error("Server sent suspect path \"%s\" "
631 "during readdir of \"%s\"", filename, path);
633 *dir = xreallocarray(*dir, ents + 2, sizeof(**dir));
634 (*dir)[ents] = xcalloc(1, sizeof(***dir));
635 (*dir)[ents]->filename = xstrdup(filename);
636 (*dir)[ents]->longname = xstrdup(longname);
637 memcpy(&(*dir)[ents]->a, &a, sizeof(a));
638 (*dir)[++ents] = NULL;
648 do_close(conn, handle, handle_len);
651 if (status != 0 && dir != NULL) {
652 /* Don't return results on error */
653 free_sftp_dirents(*dir);
655 } else if (interrupted && dir != NULL && *dir != NULL) {
656 /* Don't return partial matches on interrupt */
657 free_sftp_dirents(*dir);
658 *dir = xcalloc(1, sizeof(**dir));
666 do_readdir(struct sftp_conn *conn, const char *path, SFTP_DIRENT ***dir)
668 return(do_lsreaddir(conn, path, 0, dir));
671 void free_sftp_dirents(SFTP_DIRENT **s)
677 for (i = 0; s[i]; i++) {
678 free(s[i]->filename);
679 free(s[i]->longname);
686 do_rm(struct sftp_conn *conn, const char *path)
690 debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
693 send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
694 status = get_status(conn, id);
695 if (status != SSH2_FX_OK)
696 error("Couldn't delete file: %s", fx2txt(status));
697 return status == SSH2_FX_OK ? 0 : -1;
701 do_mkdir(struct sftp_conn *conn, const char *path, Attrib *a, int print_flag)
706 send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
709 status = get_status(conn, id);
710 if (status != SSH2_FX_OK && print_flag)
711 error("Couldn't create directory: %s", fx2txt(status));
713 return status == SSH2_FX_OK ? 0 : -1;
717 do_rmdir(struct sftp_conn *conn, const char *path)
722 send_string_request(conn, id, SSH2_FXP_RMDIR, path,
725 status = get_status(conn, id);
726 if (status != SSH2_FX_OK)
727 error("Couldn't remove directory: %s", fx2txt(status));
729 return status == SSH2_FX_OK ? 0 : -1;
733 do_stat(struct sftp_conn *conn, const char *path, int quiet)
739 send_string_request(conn, id,
740 conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
743 return(get_decode_stat(conn, id, quiet));
747 do_lstat(struct sftp_conn *conn, const char *path, int quiet)
751 if (conn->version == 0) {
753 debug("Server version does not support lstat operation");
755 logit("Server version does not support lstat operation");
756 return(do_stat(conn, path, quiet));
760 send_string_request(conn, id, SSH2_FXP_LSTAT, path,
763 return(get_decode_stat(conn, id, quiet));
768 do_fstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
774 send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
777 return(get_decode_stat(conn, id, quiet));
782 do_setstat(struct sftp_conn *conn, const char *path, Attrib *a)
787 send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
790 status = get_status(conn, id);
791 if (status != SSH2_FX_OK)
792 error("Couldn't setstat on \"%s\": %s", path,
795 return status == SSH2_FX_OK ? 0 : -1;
799 do_fsetstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
805 send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
808 status = get_status(conn, id);
809 if (status != SSH2_FX_OK)
810 error("Couldn't fsetstat: %s", fx2txt(status));
812 return status == SSH2_FX_OK ? 0 : -1;
816 do_realpath(struct sftp_conn *conn, const char *path)
819 u_int expected_id, count, id;
820 char *filename, *longname;
825 expected_id = id = conn->msg_id++;
826 send_string_request(conn, id, SSH2_FXP_REALPATH, path,
829 if ((msg = sshbuf_new()) == NULL)
830 fatal("%s: sshbuf_new failed", __func__);
833 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
834 (r = sshbuf_get_u32(msg, &id)) != 0)
835 fatal("%s: buffer error: %s", __func__, ssh_err(r));
837 if (id != expected_id)
838 fatal("ID mismatch (%u != %u)", id, expected_id);
840 if (type == SSH2_FXP_STATUS) {
843 if ((r = sshbuf_get_u32(msg, &status)) != 0)
844 fatal("%s: buffer error: %s", __func__, ssh_err(r));
845 error("Couldn't canonicalize: %s", fx2txt(status));
848 } else if (type != SSH2_FXP_NAME)
849 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
850 SSH2_FXP_NAME, type);
852 if ((r = sshbuf_get_u32(msg, &count)) != 0)
853 fatal("%s: buffer error: %s", __func__, ssh_err(r));
855 fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
857 if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
858 (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
859 (r = decode_attrib(msg, &a)) != 0)
860 fatal("%s: buffer error: %s", __func__, ssh_err(r));
862 debug3("SSH_FXP_REALPATH %s -> %s size %lu", path, filename,
863 (unsigned long)a.size);
873 do_rename(struct sftp_conn *conn, const char *oldpath, const char *newpath,
878 int r, use_ext = (conn->exts & SFTP_EXT_POSIX_RENAME) && !force_legacy;
880 if ((msg = sshbuf_new()) == NULL)
881 fatal("%s: sshbuf_new failed", __func__);
883 /* Send rename request */
886 if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
887 (r = sshbuf_put_u32(msg, id)) != 0 ||
888 (r = sshbuf_put_cstring(msg,
889 "posix-rename@openssh.com")) != 0)
890 fatal("%s: buffer error: %s", __func__, ssh_err(r));
892 if ((r = sshbuf_put_u8(msg, SSH2_FXP_RENAME)) != 0 ||
893 (r = sshbuf_put_u32(msg, id)) != 0)
894 fatal("%s: buffer error: %s", __func__, ssh_err(r));
896 if ((r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
897 (r = sshbuf_put_cstring(msg, newpath)) != 0)
898 fatal("%s: buffer error: %s", __func__, ssh_err(r));
900 debug3("Sent message %s \"%s\" -> \"%s\"",
901 use_ext ? "posix-rename@openssh.com" :
902 "SSH2_FXP_RENAME", oldpath, newpath);
905 status = get_status(conn, id);
906 if (status != SSH2_FX_OK)
907 error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
908 newpath, fx2txt(status));
910 return status == SSH2_FX_OK ? 0 : -1;
914 do_hardlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
920 if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
921 error("Server does not support hardlink@openssh.com extension");
925 if ((msg = sshbuf_new()) == NULL)
926 fatal("%s: sshbuf_new failed", __func__);
928 /* Send link request */
930 if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
931 (r = sshbuf_put_u32(msg, id)) != 0 ||
932 (r = sshbuf_put_cstring(msg, "hardlink@openssh.com")) != 0 ||
933 (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
934 (r = sshbuf_put_cstring(msg, newpath)) != 0)
935 fatal("%s: buffer error: %s", __func__, ssh_err(r));
937 debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"",
941 status = get_status(conn, id);
942 if (status != SSH2_FX_OK)
943 error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
944 newpath, fx2txt(status));
946 return status == SSH2_FX_OK ? 0 : -1;
950 do_symlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
956 if (conn->version < 3) {
957 error("This server does not support the symlink operation");
958 return(SSH2_FX_OP_UNSUPPORTED);
961 if ((msg = sshbuf_new()) == NULL)
962 fatal("%s: sshbuf_new failed", __func__);
964 /* Send symlink request */
966 if ((r = sshbuf_put_u8(msg, SSH2_FXP_SYMLINK)) != 0 ||
967 (r = sshbuf_put_u32(msg, id)) != 0 ||
968 (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
969 (r = sshbuf_put_cstring(msg, newpath)) != 0)
970 fatal("%s: buffer error: %s", __func__, ssh_err(r));
972 debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
976 status = get_status(conn, id);
977 if (status != SSH2_FX_OK)
978 error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
979 newpath, fx2txt(status));
981 return status == SSH2_FX_OK ? 0 : -1;
985 do_fsync(struct sftp_conn *conn, u_char *handle, u_int handle_len)
991 /* Silently return if the extension is not supported */
992 if ((conn->exts & SFTP_EXT_FSYNC) == 0)
995 /* Send fsync request */
996 if ((msg = sshbuf_new()) == NULL)
997 fatal("%s: sshbuf_new failed", __func__);
999 if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1000 (r = sshbuf_put_u32(msg, id)) != 0 ||
1001 (r = sshbuf_put_cstring(msg, "fsync@openssh.com")) != 0 ||
1002 (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1003 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1004 send_msg(conn, msg);
1005 debug3("Sent message fsync@openssh.com I:%u", id);
1008 status = get_status(conn, id);
1009 if (status != SSH2_FX_OK)
1010 error("Couldn't sync file: %s", fx2txt(status));
1017 do_readlink(struct sftp_conn *conn, const char *path)
1020 u_int expected_id, count, id;
1021 char *filename, *longname;
1026 expected_id = id = conn->msg_id++;
1027 send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1029 if ((msg = sshbuf_new()) == NULL)
1030 fatal("%s: sshbuf_new failed", __func__);
1033 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1034 (r = sshbuf_get_u32(msg, &id)) != 0)
1035 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1037 if (id != expected_id)
1038 fatal("ID mismatch (%u != %u)", id, expected_id);
1040 if (type == SSH2_FXP_STATUS) {
1043 if ((r = sshbuf_get_u32(msg, &status)) != 0)
1044 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1045 error("Couldn't readlink: %s", fx2txt(status));
1048 } else if (type != SSH2_FXP_NAME)
1049 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1050 SSH2_FXP_NAME, type);
1052 if ((r = sshbuf_get_u32(msg, &count)) != 0)
1053 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1055 fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
1057 if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
1058 (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
1059 (r = decode_attrib(msg, &a)) != 0)
1060 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1062 debug3("SSH_FXP_READLINK %s -> %s", path, filename);
1073 do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1080 if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
1081 error("Server does not support statvfs@openssh.com extension");
1085 id = conn->msg_id++;
1087 if ((msg = sshbuf_new()) == NULL)
1088 fatal("%s: sshbuf_new failed", __func__);
1090 if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1091 (r = sshbuf_put_u32(msg, id)) != 0 ||
1092 (r = sshbuf_put_cstring(msg, "statvfs@openssh.com")) != 0 ||
1093 (r = sshbuf_put_cstring(msg, path)) != 0)
1094 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1095 send_msg(conn, msg);
1098 return get_decode_statvfs(conn, st, id, quiet);
1103 do_fstatvfs(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1104 struct sftp_statvfs *st, int quiet)
1109 if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
1110 error("Server does not support fstatvfs@openssh.com extension");
1114 id = conn->msg_id++;
1116 if ((msg = sshbuf_new()) == NULL)
1117 fatal("%s: sshbuf_new failed", __func__);
1119 if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1120 (r = sshbuf_put_u32(msg, id)) != 0 ||
1121 (r = sshbuf_put_cstring(msg, "fstatvfs@openssh.com")) != 0 ||
1122 (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1123 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1124 send_msg(conn, msg);
1127 return get_decode_statvfs(conn, st, id, quiet);
1132 send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
1133 u_int len, const u_char *handle, u_int handle_len)
1138 if ((msg = sshbuf_new()) == NULL)
1139 fatal("%s: sshbuf_new failed", __func__);
1141 if ((r = sshbuf_put_u8(msg, SSH2_FXP_READ)) != 0 ||
1142 (r = sshbuf_put_u32(msg, id)) != 0 ||
1143 (r = sshbuf_put_string(msg, handle, handle_len)) != 0 ||
1144 (r = sshbuf_put_u64(msg, offset)) != 0 ||
1145 (r = sshbuf_put_u32(msg, len)) != 0)
1146 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1147 send_msg(conn, msg);
1152 do_download(struct sftp_conn *conn, const char *remote_path,
1153 const char *local_path, Attrib *a, int preserve_flag, int resume_flag,
1159 int local_fd = -1, write_error;
1160 int read_error, write_errno, reordered = 0, r;
1161 u_int64_t offset = 0, size, highwater;
1162 u_int mode, id, buflen, num_req, max_req, status = SSH2_FX_OK;
1163 off_t progress_counter;
1170 TAILQ_ENTRY(request) tq;
1172 TAILQ_HEAD(reqhead, request) requests;
1173 struct request *req;
1176 TAILQ_INIT(&requests);
1178 if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1181 /* Do not preserve set[ug]id here, as we do not preserve ownership */
1182 if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1183 mode = a->perm & 0777;
1187 if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1188 (!S_ISREG(a->perm))) {
1189 error("Cannot download non-regular file: %s", remote_path);
1193 if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1198 buflen = conn->transfer_buflen;
1199 if ((msg = sshbuf_new()) == NULL)
1200 fatal("%s: sshbuf_new failed", __func__);
1202 attrib_clear(&junk); /* Send empty attributes */
1204 /* Send open request */
1205 id = conn->msg_id++;
1206 if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1207 (r = sshbuf_put_u32(msg, id)) != 0 ||
1208 (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1209 (r = sshbuf_put_u32(msg, SSH2_FXF_READ)) != 0 ||
1210 (r = encode_attrib(msg, &junk)) != 0)
1211 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1212 send_msg(conn, msg);
1213 debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1215 handle = get_handle(conn, id, &handle_len,
1216 "remote open(\"%s\")", remote_path);
1217 if (handle == NULL) {
1222 local_fd = open(local_path,
1223 O_WRONLY | O_CREAT | (resume_flag ? 0 : O_TRUNC), mode | S_IWUSR);
1224 if (local_fd == -1) {
1225 error("Couldn't open local file \"%s\" for writing: %s",
1226 local_path, strerror(errno));
1229 offset = highwater = 0;
1231 if (fstat(local_fd, &st) == -1) {
1232 error("Unable to stat local file \"%s\": %s",
1233 local_path, strerror(errno));
1236 if (st.st_size < 0) {
1237 error("\"%s\" has negative size", local_path);
1240 if ((u_int64_t)st.st_size > size) {
1241 error("Unable to resume download of \"%s\": "
1242 "local file is larger than remote", local_path);
1244 do_close(conn, handle, handle_len);
1251 offset = highwater = st.st_size;
1254 /* Read from remote and write to local */
1255 write_error = read_error = write_errno = num_req = 0;
1257 progress_counter = offset;
1259 if (showprogress && size != 0)
1260 start_progress_meter(remote_path, size, &progress_counter);
1262 while (num_req > 0 || max_req > 0) {
1267 * Simulate EOF on interrupt: stop sending new requests and
1268 * allow outstanding requests to drain gracefully
1271 if (num_req == 0) /* If we haven't started yet... */
1276 /* Send some more requests */
1277 while (num_req < max_req) {
1278 debug3("Request range %llu -> %llu (%d/%d)",
1279 (unsigned long long)offset,
1280 (unsigned long long)offset + buflen - 1,
1282 req = xcalloc(1, sizeof(*req));
1283 req->id = conn->msg_id++;
1285 req->offset = offset;
1288 TAILQ_INSERT_TAIL(&requests, req, tq);
1289 send_read_request(conn, req->id, req->offset,
1290 req->len, handle, handle_len);
1295 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1296 (r = sshbuf_get_u32(msg, &id)) != 0)
1297 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1298 debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1300 /* Find the request in our queue */
1301 for (req = TAILQ_FIRST(&requests);
1302 req != NULL && req->id != id;
1303 req = TAILQ_NEXT(req, tq))
1306 fatal("Unexpected reply %u", id);
1309 case SSH2_FXP_STATUS:
1310 if ((r = sshbuf_get_u32(msg, &status)) != 0)
1311 fatal("%s: buffer error: %s",
1312 __func__, ssh_err(r));
1313 if (status != SSH2_FX_EOF)
1316 TAILQ_REMOVE(&requests, req, tq);
1321 if ((r = sshbuf_get_string(msg, &data, &len)) != 0)
1322 fatal("%s: buffer error: %s",
1323 __func__, ssh_err(r));
1324 debug3("Received data %llu -> %llu",
1325 (unsigned long long)req->offset,
1326 (unsigned long long)req->offset + len - 1);
1328 fatal("Received more data than asked for "
1329 "%zu > %zu", len, req->len);
1330 if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1331 atomicio(vwrite, local_fd, data, len) != len) &&
1333 write_errno = errno;
1337 else if (!reordered && req->offset <= highwater)
1338 highwater = req->offset + len;
1339 else if (!reordered && req->offset > highwater)
1341 progress_counter += len;
1344 if (len == req->len) {
1345 TAILQ_REMOVE(&requests, req, tq);
1349 /* Resend the request for the missing data */
1350 debug3("Short data block, re-requesting "
1351 "%llu -> %llu (%2d)",
1352 (unsigned long long)req->offset + len,
1353 (unsigned long long)req->offset +
1354 req->len - 1, num_req);
1355 req->id = conn->msg_id++;
1358 send_read_request(conn, req->id,
1359 req->offset, req->len, handle, handle_len);
1360 /* Reduce the request size */
1362 buflen = MAXIMUM(MIN_READ_SIZE, len);
1364 if (max_req > 0) { /* max_req = 0 iff EOF received */
1365 if (size > 0 && offset > size) {
1366 /* Only one request at a time
1367 * after the expected EOF */
1368 debug3("Finish at %llu (%2d)",
1369 (unsigned long long)offset,
1372 } else if (max_req <= conn->num_requests) {
1378 fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1379 SSH2_FXP_DATA, type);
1383 if (showprogress && size)
1384 stop_progress_meter();
1387 if (TAILQ_FIRST(&requests) != NULL)
1388 fatal("Transfer complete, but requests still in queue");
1389 /* Truncate at highest contiguous point to avoid holes on interrupt */
1390 if (read_error || write_error || interrupted) {
1391 if (reordered && resume_flag) {
1392 error("Unable to resume download of \"%s\": "
1393 "server reordered requests", local_path);
1395 debug("truncating at %llu", (unsigned long long)highwater);
1396 if (ftruncate(local_fd, highwater) == -1)
1397 error("ftruncate \"%s\": %s", local_path,
1401 error("Couldn't read from remote file \"%s\" : %s",
1402 remote_path, fx2txt(status));
1404 do_close(conn, handle, handle_len);
1405 } else if (write_error) {
1406 error("Couldn't write to \"%s\": %s", local_path,
1407 strerror(write_errno));
1408 status = SSH2_FX_FAILURE;
1409 do_close(conn, handle, handle_len);
1411 if (do_close(conn, handle, handle_len) != 0 || interrupted)
1412 status = SSH2_FX_FAILURE;
1414 status = SSH2_FX_OK;
1415 /* Override umask and utimes if asked */
1417 if (preserve_flag && fchmod(local_fd, mode) == -1)
1419 if (preserve_flag && chmod(local_path, mode) == -1)
1420 #endif /* HAVE_FCHMOD */
1421 error("Couldn't set mode on \"%s\": %s", local_path,
1423 if (preserve_flag &&
1424 (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1425 struct timeval tv[2];
1426 tv[0].tv_sec = a->atime;
1427 tv[1].tv_sec = a->mtime;
1428 tv[0].tv_usec = tv[1].tv_usec = 0;
1429 if (utimes(local_path, tv) == -1)
1430 error("Can't set times on \"%s\": %s",
1431 local_path, strerror(errno));
1434 debug("syncing \"%s\"", local_path);
1435 if (fsync(local_fd) == -1)
1436 error("Couldn't sync file \"%s\": %s",
1437 local_path, strerror(errno));
1448 download_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1449 int depth, Attrib *dirattrib, int preserve_flag, int print_flag,
1450 int resume_flag, int fsync_flag)
1453 SFTP_DIRENT **dir_entries;
1454 char *filename, *new_src, *new_dst;
1457 if (depth >= MAX_DIR_DEPTH) {
1458 error("Maximum directory depth exceeded: %d levels", depth);
1462 if (dirattrib == NULL &&
1463 (dirattrib = do_stat(conn, src, 1)) == NULL) {
1464 error("Unable to stat remote directory \"%s\"", src);
1467 if (!S_ISDIR(dirattrib->perm)) {
1468 error("\"%s\" is not a directory", src);
1472 mprintf("Retrieving %s\n", src);
1474 if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1475 mode = dirattrib->perm & 01777;
1477 debug("Server did not send permissions for "
1478 "directory \"%s\"", dst);
1481 if (mkdir(dst, mode) == -1 && errno != EEXIST) {
1482 error("mkdir %s: %s", dst, strerror(errno));
1486 if (do_readdir(conn, src, &dir_entries) == -1) {
1487 error("%s: Failed to get directory contents", src);
1491 for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1492 filename = dir_entries[i]->filename;
1494 new_dst = path_append(dst, filename);
1495 new_src = path_append(src, filename);
1497 if (S_ISDIR(dir_entries[i]->a.perm)) {
1498 if (strcmp(filename, ".") == 0 ||
1499 strcmp(filename, "..") == 0)
1501 if (download_dir_internal(conn, new_src, new_dst,
1502 depth + 1, &(dir_entries[i]->a), preserve_flag,
1503 print_flag, resume_flag, fsync_flag) == -1)
1505 } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1506 if (do_download(conn, new_src, new_dst,
1507 &(dir_entries[i]->a), preserve_flag,
1508 resume_flag, fsync_flag) == -1) {
1509 error("Download of file %s to %s failed",
1514 logit("%s: not a regular file\n", new_src);
1520 if (preserve_flag) {
1521 if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1522 struct timeval tv[2];
1523 tv[0].tv_sec = dirattrib->atime;
1524 tv[1].tv_sec = dirattrib->mtime;
1525 tv[0].tv_usec = tv[1].tv_usec = 0;
1526 if (utimes(dst, tv) == -1)
1527 error("Can't set times on \"%s\": %s",
1528 dst, strerror(errno));
1530 debug("Server did not send times for directory "
1534 free_sftp_dirents(dir_entries);
1540 download_dir(struct sftp_conn *conn, const char *src, const char *dst,
1541 Attrib *dirattrib, int preserve_flag, int print_flag, int resume_flag,
1547 if ((src_canon = do_realpath(conn, src)) == NULL) {
1548 error("Unable to canonicalize path \"%s\"", src);
1552 ret = download_dir_internal(conn, src_canon, dst, 0,
1553 dirattrib, preserve_flag, print_flag, resume_flag, fsync_flag);
1559 do_upload(struct sftp_conn *conn, const char *local_path,
1560 const char *remote_path, int preserve_flag, int resume, int fsync_flag)
1563 u_int status = SSH2_FX_OK;
1566 off_t offset, progress_counter;
1567 u_char *handle, *data;
1570 Attrib a, *c = NULL;
1573 struct outstanding_ack {
1577 TAILQ_ENTRY(outstanding_ack) tq;
1579 TAILQ_HEAD(ackhead, outstanding_ack) acks;
1580 struct outstanding_ack *ack = NULL;
1585 if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1586 error("Couldn't open local file \"%s\" for reading: %s",
1587 local_path, strerror(errno));
1590 if (fstat(local_fd, &sb) == -1) {
1591 error("Couldn't fstat local file \"%s\": %s",
1592 local_path, strerror(errno));
1596 if (!S_ISREG(sb.st_mode)) {
1597 error("%s is not a regular file", local_path);
1601 stat_to_attrib(&sb, &a);
1603 a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1604 a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1607 a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1610 /* Get remote file size if it exists */
1611 if ((c = do_stat(conn, remote_path, 0)) == NULL) {
1616 if ((off_t)c->size >= sb.st_size) {
1617 error("destination file bigger or same size as "
1623 if (lseek(local_fd, (off_t)c->size, SEEK_SET) == -1) {
1629 if ((msg = sshbuf_new()) == NULL)
1630 fatal("%s: sshbuf_new failed", __func__);
1632 /* Send open request */
1633 id = conn->msg_id++;
1634 if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1635 (r = sshbuf_put_u32(msg, id)) != 0 ||
1636 (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1637 (r = sshbuf_put_u32(msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|
1638 (resume ? SSH2_FXF_APPEND : SSH2_FXF_TRUNC))) != 0 ||
1639 (r = encode_attrib(msg, &a)) != 0)
1640 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1641 send_msg(conn, msg);
1642 debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1646 handle = get_handle(conn, id, &handle_len,
1647 "remote open(\"%s\")", remote_path);
1648 if (handle == NULL) {
1654 startid = ackid = id + 1;
1655 data = xmalloc(conn->transfer_buflen);
1657 /* Read from local and write to remote */
1658 offset = progress_counter = (resume ? c->size : 0);
1660 start_progress_meter(local_path, sb.st_size,
1667 * Can't use atomicio here because it returns 0 on EOF,
1668 * thus losing the last block of the file.
1669 * Simulate an EOF on interrupt, allowing ACKs from the
1672 if (interrupted || status != SSH2_FX_OK)
1675 len = read(local_fd, data, conn->transfer_buflen);
1676 while ((len == -1) &&
1677 (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
1680 fatal("Couldn't read from \"%s\": %s", local_path,
1684 ack = xcalloc(1, sizeof(*ack));
1686 ack->offset = offset;
1688 TAILQ_INSERT_TAIL(&acks, ack, tq);
1691 if ((r = sshbuf_put_u8(msg, SSH2_FXP_WRITE)) != 0 ||
1692 (r = sshbuf_put_u32(msg, ack->id)) != 0 ||
1693 (r = sshbuf_put_string(msg, handle,
1694 handle_len)) != 0 ||
1695 (r = sshbuf_put_u64(msg, offset)) != 0 ||
1696 (r = sshbuf_put_string(msg, data, len)) != 0)
1697 fatal("%s: buffer error: %s",
1698 __func__, ssh_err(r));
1699 send_msg(conn, msg);
1700 debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1701 id, (unsigned long long)offset, len);
1702 } else if (TAILQ_FIRST(&acks) == NULL)
1706 fatal("Unexpected ACK %u", id);
1708 if (id == startid || len == 0 ||
1709 id - ackid >= conn->num_requests) {
1714 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1715 (r = sshbuf_get_u32(msg, &rid)) != 0)
1716 fatal("%s: buffer error: %s",
1717 __func__, ssh_err(r));
1719 if (type != SSH2_FXP_STATUS)
1720 fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1721 "got %d", SSH2_FXP_STATUS, type);
1723 if ((r = sshbuf_get_u32(msg, &status)) != 0)
1724 fatal("%s: buffer error: %s",
1725 __func__, ssh_err(r));
1726 debug3("SSH2_FXP_STATUS %u", status);
1728 /* Find the request in our queue */
1729 for (ack = TAILQ_FIRST(&acks);
1730 ack != NULL && ack->id != rid;
1731 ack = TAILQ_NEXT(ack, tq))
1734 fatal("Can't find request for ID %u", rid);
1735 TAILQ_REMOVE(&acks, ack, tq);
1736 debug3("In write loop, ack for %u %u bytes at %lld",
1737 ack->id, ack->len, (long long)ack->offset);
1739 progress_counter += ack->len;
1744 fatal("%s: offset < 0", __func__);
1749 stop_progress_meter();
1752 if (status != SSH2_FX_OK) {
1753 error("Couldn't write to remote file \"%s\": %s",
1754 remote_path, fx2txt(status));
1755 status = SSH2_FX_FAILURE;
1758 if (close(local_fd) == -1) {
1759 error("Couldn't close local file \"%s\": %s", local_path,
1761 status = SSH2_FX_FAILURE;
1764 /* Override umask and utimes if asked */
1766 do_fsetstat(conn, handle, handle_len, &a);
1769 (void)do_fsync(conn, handle, handle_len);
1771 if (do_close(conn, handle, handle_len) != 0)
1772 status = SSH2_FX_FAILURE;
1776 return status == SSH2_FX_OK ? 0 : -1;
1780 upload_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1781 int depth, int preserve_flag, int print_flag, int resume, int fsync_flag)
1786 char *filename, *new_src, *new_dst;
1788 Attrib a, *dirattrib;
1790 if (depth >= MAX_DIR_DEPTH) {
1791 error("Maximum directory depth exceeded: %d levels", depth);
1795 if (stat(src, &sb) == -1) {
1796 error("Couldn't stat directory \"%s\": %s",
1797 src, strerror(errno));
1800 if (!S_ISDIR(sb.st_mode)) {
1801 error("\"%s\" is not a directory", src);
1805 mprintf("Entering %s\n", src);
1808 stat_to_attrib(&sb, &a);
1809 a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1810 a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1813 a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1816 * sftp lacks a portable status value to match errno EEXIST,
1817 * so if we get a failure back then we must check whether
1818 * the path already existed and is a directory.
1820 if (do_mkdir(conn, dst, &a, 0) != 0) {
1821 if ((dirattrib = do_stat(conn, dst, 0)) == NULL)
1823 if (!S_ISDIR(dirattrib->perm)) {
1824 error("\"%s\" exists but is not a directory", dst);
1829 if ((dirp = opendir(src)) == NULL) {
1830 error("Failed to open dir \"%s\": %s", src, strerror(errno));
1834 while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1837 filename = dp->d_name;
1838 new_dst = path_append(dst, filename);
1839 new_src = path_append(src, filename);
1841 if (lstat(new_src, &sb) == -1) {
1842 logit("%s: lstat failed: %s", filename,
1845 } else if (S_ISDIR(sb.st_mode)) {
1846 if (strcmp(filename, ".") == 0 ||
1847 strcmp(filename, "..") == 0)
1850 if (upload_dir_internal(conn, new_src, new_dst,
1851 depth + 1, preserve_flag, print_flag, resume,
1854 } else if (S_ISREG(sb.st_mode)) {
1855 if (do_upload(conn, new_src, new_dst,
1856 preserve_flag, resume, fsync_flag) == -1) {
1857 error("Uploading of file %s to %s failed!",
1862 logit("%s: not a regular file\n", filename);
1867 do_setstat(conn, dst, &a);
1869 (void) closedir(dirp);
1874 upload_dir(struct sftp_conn *conn, const char *src, const char *dst,
1875 int preserve_flag, int print_flag, int resume, int fsync_flag)
1880 if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1881 error("Unable to canonicalize path \"%s\"", dst);
1885 ret = upload_dir_internal(conn, src, dst_canon, 0, preserve_flag,
1886 print_flag, resume, fsync_flag);
1893 path_append(const char *p1, const char *p2)
1896 size_t len = strlen(p1) + strlen(p2) + 2;
1899 strlcpy(ret, p1, len);
1900 if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1901 strlcat(ret, "/", len);
1902 strlcat(ret, p2, len);