1 /* $OpenBSD: sftp-client.c,v 1.78 2008/01/11 07:22:27 chl 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 #include <sys/param.h>
27 #include "openbsd-compat/sys-queue.h"
28 #ifdef HAVE_SYS_STAT_H
29 # include <sys/stat.h>
31 #ifdef HAVE_SYS_TIME_H
32 # include <sys/time.h>
48 #include "progressmeter.h"
52 #include "sftp-common.h"
53 #include "sftp-client.h"
55 extern volatile sig_atomic_t interrupted;
56 extern int showprogress;
58 /* Minimum amount of data to read at a time */
59 #define MIN_READ_SIZE 512
64 u_int transfer_buflen;
71 send_msg(int fd, Buffer *m)
76 if (buffer_len(m) > SFTP_MAX_MSG_LENGTH)
77 fatal("Outbound message too long %u", buffer_len(m));
79 /* Send length first */
80 put_u32(mlen, buffer_len(m));
81 iov[0].iov_base = mlen;
82 iov[0].iov_len = sizeof(mlen);
83 iov[1].iov_base = buffer_ptr(m);
84 iov[1].iov_len = buffer_len(m);
86 if (atomiciov(writev, fd, iov, 2) != buffer_len(m) + sizeof(mlen))
87 fatal("Couldn't send packet: %s", strerror(errno));
93 get_msg(int fd, Buffer *m)
97 buffer_append_space(m, 4);
98 if (atomicio(read, fd, buffer_ptr(m), 4) != 4) {
100 fatal("Connection closed");
102 fatal("Couldn't read packet: %s", strerror(errno));
105 msg_len = buffer_get_int(m);
106 if (msg_len > SFTP_MAX_MSG_LENGTH)
107 fatal("Received message too long %u", msg_len);
109 buffer_append_space(m, msg_len);
110 if (atomicio(read, fd, buffer_ptr(m), msg_len) != msg_len) {
112 fatal("Connection closed");
114 fatal("Read packet: %s", strerror(errno));
119 send_string_request(int fd, u_int id, u_int code, char *s,
125 buffer_put_char(&msg, code);
126 buffer_put_int(&msg, id);
127 buffer_put_string(&msg, s, len);
129 debug3("Sent message fd %d T:%u I:%u", fd, code, id);
134 send_string_attrs_request(int fd, u_int id, u_int code, char *s,
135 u_int len, Attrib *a)
140 buffer_put_char(&msg, code);
141 buffer_put_int(&msg, id);
142 buffer_put_string(&msg, s, len);
143 encode_attrib(&msg, a);
145 debug3("Sent message fd %d T:%u I:%u", fd, code, id);
150 get_status(int fd, u_int expected_id)
153 u_int type, id, status;
157 type = buffer_get_char(&msg);
158 id = buffer_get_int(&msg);
160 if (id != expected_id)
161 fatal("ID mismatch (%u != %u)", id, expected_id);
162 if (type != SSH2_FXP_STATUS)
163 fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
164 SSH2_FXP_STATUS, type);
166 status = buffer_get_int(&msg);
169 debug3("SSH2_FXP_STATUS %u", status);
175 get_handle(int fd, u_int expected_id, u_int *len)
183 type = buffer_get_char(&msg);
184 id = buffer_get_int(&msg);
186 if (id != expected_id)
187 fatal("ID mismatch (%u != %u)", id, expected_id);
188 if (type == SSH2_FXP_STATUS) {
189 int status = buffer_get_int(&msg);
191 error("Couldn't get handle: %s", fx2txt(status));
194 } else if (type != SSH2_FXP_HANDLE)
195 fatal("Expected SSH2_FXP_HANDLE(%u) packet, got %u",
196 SSH2_FXP_HANDLE, type);
198 handle = buffer_get_string(&msg, len);
205 get_decode_stat(int fd, u_int expected_id, int quiet)
214 type = buffer_get_char(&msg);
215 id = buffer_get_int(&msg);
217 debug3("Received stat reply T:%u I:%u", type, id);
218 if (id != expected_id)
219 fatal("ID mismatch (%u != %u)", id, expected_id);
220 if (type == SSH2_FXP_STATUS) {
221 int status = buffer_get_int(&msg);
224 debug("Couldn't stat remote file: %s", fx2txt(status));
226 error("Couldn't stat remote file: %s", fx2txt(status));
229 } else if (type != SSH2_FXP_ATTRS) {
230 fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
231 SSH2_FXP_ATTRS, type);
233 a = decode_attrib(&msg);
240 do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests)
245 struct sftp_conn *ret;
248 buffer_put_char(&msg, SSH2_FXP_INIT);
249 buffer_put_int(&msg, SSH2_FILEXFER_VERSION);
250 send_msg(fd_out, &msg);
254 get_msg(fd_in, &msg);
256 /* Expecting a VERSION reply */
257 if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) {
258 error("Invalid packet back from SSH2_FXP_INIT (type %u)",
263 version = buffer_get_int(&msg);
265 debug2("Remote version: %d", version);
267 /* Check for extensions */
268 while (buffer_len(&msg) > 0) {
269 char *name = buffer_get_string(&msg, NULL);
270 char *value = buffer_get_string(&msg, NULL);
272 debug2("Init extension: \"%s\"", name);
279 ret = xmalloc(sizeof(*ret));
281 ret->fd_out = fd_out;
282 ret->transfer_buflen = transfer_buflen;
283 ret->num_requests = num_requests;
284 ret->version = version;
287 /* Some filexfer v.0 servers don't support large packets */
289 ret->transfer_buflen = MIN(ret->transfer_buflen, 20480);
295 sftp_proto_version(struct sftp_conn *conn)
297 return(conn->version);
301 do_close(struct sftp_conn *conn, char *handle, u_int handle_len)
309 buffer_put_char(&msg, SSH2_FXP_CLOSE);
310 buffer_put_int(&msg, id);
311 buffer_put_string(&msg, handle, handle_len);
312 send_msg(conn->fd_out, &msg);
313 debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
315 status = get_status(conn->fd_in, id);
316 if (status != SSH2_FX_OK)
317 error("Couldn't close file: %s", fx2txt(status));
326 do_lsreaddir(struct sftp_conn *conn, char *path, int printflag,
330 u_int count, type, id, handle_len, i, expected_id, ents = 0;
336 buffer_put_char(&msg, SSH2_FXP_OPENDIR);
337 buffer_put_int(&msg, id);
338 buffer_put_cstring(&msg, path);
339 send_msg(conn->fd_out, &msg);
343 handle = get_handle(conn->fd_in, id, &handle_len);
349 *dir = xmalloc(sizeof(**dir));
353 for (; !interrupted;) {
354 id = expected_id = conn->msg_id++;
356 debug3("Sending SSH2_FXP_READDIR I:%u", id);
359 buffer_put_char(&msg, SSH2_FXP_READDIR);
360 buffer_put_int(&msg, id);
361 buffer_put_string(&msg, handle, handle_len);
362 send_msg(conn->fd_out, &msg);
366 get_msg(conn->fd_in, &msg);
368 type = buffer_get_char(&msg);
369 id = buffer_get_int(&msg);
371 debug3("Received reply T:%u I:%u", type, id);
373 if (id != expected_id)
374 fatal("ID mismatch (%u != %u)", id, expected_id);
376 if (type == SSH2_FXP_STATUS) {
377 int status = buffer_get_int(&msg);
379 debug3("Received SSH2_FXP_STATUS %d", status);
381 if (status == SSH2_FX_EOF) {
384 error("Couldn't read directory: %s",
386 do_close(conn, handle, handle_len);
390 } else if (type != SSH2_FXP_NAME)
391 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
392 SSH2_FXP_NAME, type);
394 count = buffer_get_int(&msg);
397 debug3("Received %d SSH2_FXP_NAME responses", count);
398 for (i = 0; i < count; i++) {
399 char *filename, *longname;
402 filename = buffer_get_string(&msg, NULL);
403 longname = buffer_get_string(&msg, NULL);
404 a = decode_attrib(&msg);
407 printf("%s\n", longname);
410 *dir = xrealloc(*dir, ents + 2, sizeof(**dir));
411 (*dir)[ents] = xmalloc(sizeof(***dir));
412 (*dir)[ents]->filename = xstrdup(filename);
413 (*dir)[ents]->longname = xstrdup(longname);
414 memcpy(&(*dir)[ents]->a, a, sizeof(*a));
415 (*dir)[++ents] = NULL;
424 do_close(conn, handle, handle_len);
427 /* Don't return partial matches on interrupt */
428 if (interrupted && dir != NULL && *dir != NULL) {
429 free_sftp_dirents(*dir);
430 *dir = xmalloc(sizeof(**dir));
438 do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir)
440 return(do_lsreaddir(conn, path, 0, dir));
443 void free_sftp_dirents(SFTP_DIRENT **s)
447 for (i = 0; s[i]; i++) {
448 xfree(s[i]->filename);
449 xfree(s[i]->longname);
456 do_rm(struct sftp_conn *conn, char *path)
460 debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
463 send_string_request(conn->fd_out, id, SSH2_FXP_REMOVE, path,
465 status = get_status(conn->fd_in, id);
466 if (status != SSH2_FX_OK)
467 error("Couldn't delete file: %s", fx2txt(status));
472 do_mkdir(struct sftp_conn *conn, char *path, Attrib *a)
477 send_string_attrs_request(conn->fd_out, id, SSH2_FXP_MKDIR, path,
480 status = get_status(conn->fd_in, id);
481 if (status != SSH2_FX_OK)
482 error("Couldn't create directory: %s", fx2txt(status));
488 do_rmdir(struct sftp_conn *conn, char *path)
493 send_string_request(conn->fd_out, id, SSH2_FXP_RMDIR, path,
496 status = get_status(conn->fd_in, id);
497 if (status != SSH2_FX_OK)
498 error("Couldn't remove directory: %s", fx2txt(status));
504 do_stat(struct sftp_conn *conn, char *path, int quiet)
510 send_string_request(conn->fd_out, id,
511 conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
514 return(get_decode_stat(conn->fd_in, id, quiet));
518 do_lstat(struct sftp_conn *conn, char *path, int quiet)
522 if (conn->version == 0) {
524 debug("Server version does not support lstat operation");
526 logit("Server version does not support lstat operation");
527 return(do_stat(conn, path, quiet));
531 send_string_request(conn->fd_out, id, SSH2_FXP_LSTAT, path,
534 return(get_decode_stat(conn->fd_in, id, quiet));
539 do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet)
544 send_string_request(conn->fd_out, id, SSH2_FXP_FSTAT, handle,
547 return(get_decode_stat(conn->fd_in, id, quiet));
552 do_setstat(struct sftp_conn *conn, char *path, Attrib *a)
557 send_string_attrs_request(conn->fd_out, id, SSH2_FXP_SETSTAT, path,
560 status = get_status(conn->fd_in, id);
561 if (status != SSH2_FX_OK)
562 error("Couldn't setstat on \"%s\": %s", path,
569 do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len,
575 send_string_attrs_request(conn->fd_out, id, SSH2_FXP_FSETSTAT, handle,
578 status = get_status(conn->fd_in, id);
579 if (status != SSH2_FX_OK)
580 error("Couldn't fsetstat: %s", fx2txt(status));
586 do_realpath(struct sftp_conn *conn, char *path)
589 u_int type, expected_id, count, id;
590 char *filename, *longname;
593 expected_id = id = conn->msg_id++;
594 send_string_request(conn->fd_out, id, SSH2_FXP_REALPATH, path,
599 get_msg(conn->fd_in, &msg);
600 type = buffer_get_char(&msg);
601 id = buffer_get_int(&msg);
603 if (id != expected_id)
604 fatal("ID mismatch (%u != %u)", id, expected_id);
606 if (type == SSH2_FXP_STATUS) {
607 u_int status = buffer_get_int(&msg);
609 error("Couldn't canonicalise: %s", fx2txt(status));
611 } else if (type != SSH2_FXP_NAME)
612 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
613 SSH2_FXP_NAME, type);
615 count = buffer_get_int(&msg);
617 fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
619 filename = buffer_get_string(&msg, NULL);
620 longname = buffer_get_string(&msg, NULL);
621 a = decode_attrib(&msg);
623 debug3("SSH_FXP_REALPATH %s -> %s", path, filename);
633 do_rename(struct sftp_conn *conn, char *oldpath, char *newpath)
640 /* Send rename request */
642 buffer_put_char(&msg, SSH2_FXP_RENAME);
643 buffer_put_int(&msg, id);
644 buffer_put_cstring(&msg, oldpath);
645 buffer_put_cstring(&msg, newpath);
646 send_msg(conn->fd_out, &msg);
647 debug3("Sent message SSH2_FXP_RENAME \"%s\" -> \"%s\"", oldpath,
651 status = get_status(conn->fd_in, id);
652 if (status != SSH2_FX_OK)
653 error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
654 newpath, fx2txt(status));
660 do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath)
665 if (conn->version < 3) {
666 error("This server does not support the symlink operation");
667 return(SSH2_FX_OP_UNSUPPORTED);
672 /* Send symlink request */
674 buffer_put_char(&msg, SSH2_FXP_SYMLINK);
675 buffer_put_int(&msg, id);
676 buffer_put_cstring(&msg, oldpath);
677 buffer_put_cstring(&msg, newpath);
678 send_msg(conn->fd_out, &msg);
679 debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
683 status = get_status(conn->fd_in, id);
684 if (status != SSH2_FX_OK)
685 error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
686 newpath, fx2txt(status));
693 do_readlink(struct sftp_conn *conn, char *path)
696 u_int type, expected_id, count, id;
697 char *filename, *longname;
700 expected_id = id = conn->msg_id++;
701 send_string_request(conn->fd_out, id, SSH2_FXP_READLINK, path,
706 get_msg(conn->fd_in, &msg);
707 type = buffer_get_char(&msg);
708 id = buffer_get_int(&msg);
710 if (id != expected_id)
711 fatal("ID mismatch (%u != %u)", id, expected_id);
713 if (type == SSH2_FXP_STATUS) {
714 u_int status = buffer_get_int(&msg);
716 error("Couldn't readlink: %s", fx2txt(status));
718 } else if (type != SSH2_FXP_NAME)
719 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
720 SSH2_FXP_NAME, type);
722 count = buffer_get_int(&msg);
724 fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
726 filename = buffer_get_string(&msg, NULL);
727 longname = buffer_get_string(&msg, NULL);
728 a = decode_attrib(&msg);
730 debug3("SSH_FXP_READLINK %s -> %s", path, filename);
741 send_read_request(int fd_out, u_int id, u_int64_t offset, u_int len,
742 char *handle, u_int handle_len)
748 buffer_put_char(&msg, SSH2_FXP_READ);
749 buffer_put_int(&msg, id);
750 buffer_put_string(&msg, handle, handle_len);
751 buffer_put_int64(&msg, offset);
752 buffer_put_int(&msg, len);
753 send_msg(fd_out, &msg);
758 do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
764 int local_fd, status = 0, write_error;
765 int read_error, write_errno;
766 u_int64_t offset, size;
767 u_int handle_len, mode, type, id, buflen, num_req, max_req;
768 off_t progress_counter;
773 TAILQ_ENTRY(request) tq;
775 TAILQ_HEAD(reqhead, request) requests;
778 TAILQ_INIT(&requests);
780 a = do_stat(conn, remote_path, 0);
784 /* XXX: should we preserve set[ug]id? */
785 if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
786 mode = a->perm & 0777;
790 if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
791 (!S_ISREG(a->perm))) {
792 error("Cannot download non-regular file: %s", remote_path);
796 if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
801 buflen = conn->transfer_buflen;
804 /* Send open request */
806 buffer_put_char(&msg, SSH2_FXP_OPEN);
807 buffer_put_int(&msg, id);
808 buffer_put_cstring(&msg, remote_path);
809 buffer_put_int(&msg, SSH2_FXF_READ);
810 attrib_clear(&junk); /* Send empty attributes */
811 encode_attrib(&msg, &junk);
812 send_msg(conn->fd_out, &msg);
813 debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
815 handle = get_handle(conn->fd_in, id, &handle_len);
816 if (handle == NULL) {
821 local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC,
823 if (local_fd == -1) {
824 error("Couldn't open local file \"%s\" for writing: %s",
825 local_path, strerror(errno));
831 /* Read from remote and write to local */
832 write_error = read_error = write_errno = num_req = offset = 0;
834 progress_counter = 0;
836 if (showprogress && size != 0)
837 start_progress_meter(remote_path, size, &progress_counter);
839 while (num_req > 0 || max_req > 0) {
844 * Simulate EOF on interrupt: stop sending new requests and
845 * allow outstanding requests to drain gracefully
848 if (num_req == 0) /* If we haven't started yet... */
853 /* Send some more requests */
854 while (num_req < max_req) {
855 debug3("Request range %llu -> %llu (%d/%d)",
856 (unsigned long long)offset,
857 (unsigned long long)offset + buflen - 1,
859 req = xmalloc(sizeof(*req));
860 req->id = conn->msg_id++;
862 req->offset = offset;
865 TAILQ_INSERT_TAIL(&requests, req, tq);
866 send_read_request(conn->fd_out, req->id, req->offset,
867 req->len, handle, handle_len);
871 get_msg(conn->fd_in, &msg);
872 type = buffer_get_char(&msg);
873 id = buffer_get_int(&msg);
874 debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
876 /* Find the request in our queue */
877 for (req = TAILQ_FIRST(&requests);
878 req != NULL && req->id != id;
879 req = TAILQ_NEXT(req, tq))
882 fatal("Unexpected reply %u", id);
885 case SSH2_FXP_STATUS:
886 status = buffer_get_int(&msg);
887 if (status != SSH2_FX_EOF)
890 TAILQ_REMOVE(&requests, req, tq);
895 data = buffer_get_string(&msg, &len);
896 debug3("Received data %llu -> %llu",
897 (unsigned long long)req->offset,
898 (unsigned long long)req->offset + len - 1);
900 fatal("Received more data than asked for "
901 "%u > %u", len, req->len);
902 if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
903 atomicio(vwrite, local_fd, data, len) != len) &&
909 progress_counter += len;
912 if (len == req->len) {
913 TAILQ_REMOVE(&requests, req, tq);
917 /* Resend the request for the missing data */
918 debug3("Short data block, re-requesting "
919 "%llu -> %llu (%2d)",
920 (unsigned long long)req->offset + len,
921 (unsigned long long)req->offset +
922 req->len - 1, num_req);
923 req->id = conn->msg_id++;
926 send_read_request(conn->fd_out, req->id,
927 req->offset, req->len, handle, handle_len);
928 /* Reduce the request size */
930 buflen = MAX(MIN_READ_SIZE, len);
932 if (max_req > 0) { /* max_req = 0 iff EOF received */
933 if (size > 0 && offset > size) {
934 /* Only one request at a time
935 * after the expected EOF */
936 debug3("Finish at %llu (%2d)",
937 (unsigned long long)offset,
940 } else if (max_req <= conn->num_requests) {
946 fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
947 SSH2_FXP_DATA, type);
951 if (showprogress && size)
952 stop_progress_meter();
955 if (TAILQ_FIRST(&requests) != NULL)
956 fatal("Transfer complete, but requests still in queue");
959 error("Couldn't read from remote file \"%s\" : %s",
960 remote_path, fx2txt(status));
961 do_close(conn, handle, handle_len);
962 } else if (write_error) {
963 error("Couldn't write to \"%s\": %s", local_path,
964 strerror(write_errno));
966 do_close(conn, handle, handle_len);
968 status = do_close(conn, handle, handle_len);
970 /* Override umask and utimes if asked */
972 if (pflag && fchmod(local_fd, mode) == -1)
974 if (pflag && chmod(local_path, mode) == -1)
975 #endif /* HAVE_FCHMOD */
976 error("Couldn't set mode on \"%s\": %s", local_path,
978 if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
979 struct timeval tv[2];
980 tv[0].tv_sec = a->atime;
981 tv[1].tv_sec = a->mtime;
982 tv[0].tv_usec = tv[1].tv_usec = 0;
983 if (utimes(local_path, tv) == -1)
984 error("Can't set times on \"%s\": %s",
985 local_path, strerror(errno));
996 do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
999 int local_fd, status;
1000 u_int handle_len, id, type;
1002 char *handle, *data;
1008 struct outstanding_ack {
1012 TAILQ_ENTRY(outstanding_ack) tq;
1014 TAILQ_HEAD(ackhead, outstanding_ack) acks;
1015 struct outstanding_ack *ack = NULL;
1019 if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1020 error("Couldn't open local file \"%s\" for reading: %s",
1021 local_path, strerror(errno));
1024 if (fstat(local_fd, &sb) == -1) {
1025 error("Couldn't fstat local file \"%s\": %s",
1026 local_path, strerror(errno));
1030 if (!S_ISREG(sb.st_mode)) {
1031 error("%s is not a regular file", local_path);
1035 stat_to_attrib(&sb, &a);
1037 a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1038 a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1041 a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1045 /* Send open request */
1046 id = conn->msg_id++;
1047 buffer_put_char(&msg, SSH2_FXP_OPEN);
1048 buffer_put_int(&msg, id);
1049 buffer_put_cstring(&msg, remote_path);
1050 buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC);
1051 encode_attrib(&msg, &a);
1052 send_msg(conn->fd_out, &msg);
1053 debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1057 handle = get_handle(conn->fd_in, id, &handle_len);
1058 if (handle == NULL) {
1064 startid = ackid = id + 1;
1065 data = xmalloc(conn->transfer_buflen);
1067 /* Read from local and write to remote */
1070 start_progress_meter(local_path, sb.st_size, &offset);
1076 * Can't use atomicio here because it returns 0 on EOF,
1077 * thus losing the last block of the file.
1078 * Simulate an EOF on interrupt, allowing ACKs from the
1084 len = read(local_fd, data, conn->transfer_buflen);
1085 while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1088 fatal("Couldn't read from \"%s\": %s", local_path,
1092 ack = xmalloc(sizeof(*ack));
1094 ack->offset = offset;
1096 TAILQ_INSERT_TAIL(&acks, ack, tq);
1099 buffer_put_char(&msg, SSH2_FXP_WRITE);
1100 buffer_put_int(&msg, ack->id);
1101 buffer_put_string(&msg, handle, handle_len);
1102 buffer_put_int64(&msg, offset);
1103 buffer_put_string(&msg, data, len);
1104 send_msg(conn->fd_out, &msg);
1105 debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1106 id, (unsigned long long)offset, len);
1107 } else if (TAILQ_FIRST(&acks) == NULL)
1111 fatal("Unexpected ACK %u", id);
1113 if (id == startid || len == 0 ||
1114 id - ackid >= conn->num_requests) {
1118 get_msg(conn->fd_in, &msg);
1119 type = buffer_get_char(&msg);
1120 r_id = buffer_get_int(&msg);
1122 if (type != SSH2_FXP_STATUS)
1123 fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1124 "got %d", SSH2_FXP_STATUS, type);
1126 status = buffer_get_int(&msg);
1127 debug3("SSH2_FXP_STATUS %d", status);
1129 /* Find the request in our queue */
1130 for (ack = TAILQ_FIRST(&acks);
1131 ack != NULL && ack->id != r_id;
1132 ack = TAILQ_NEXT(ack, tq))
1135 fatal("Can't find request for ID %u", r_id);
1136 TAILQ_REMOVE(&acks, ack, tq);
1138 if (status != SSH2_FX_OK) {
1139 error("Couldn't write to remote file \"%s\": %s",
1140 remote_path, fx2txt(status));
1142 stop_progress_meter();
1143 do_close(conn, handle, handle_len);
1150 debug3("In write loop, ack for %u %u bytes at %lld",
1151 ack->id, ack->len, (long long)ack->offset);
1157 fatal("%s: offset < 0", __func__);
1160 stop_progress_meter();
1163 if (close(local_fd) == -1) {
1164 error("Couldn't close local file \"%s\": %s", local_path,
1166 do_close(conn, handle, handle_len);
1171 /* Override umask and utimes if asked */
1173 do_fsetstat(conn, handle, handle_len, &a);
1175 status = do_close(conn, handle, handle_len);