1 /* $OpenBSD: sftp-client.c,v 1.130 2018/07/31 03:07:24 djm Exp $ */
2 /*
3 * Copyright (c) 2001-2004 Damien Miller <[email protected]>
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 #ifdef HAVE_SYS_STATVFS_H
27 #include <sys/statvfs.h>
28 #endif
29 #include "openbsd-compat/sys-queue.h"
30 #ifdef HAVE_SYS_STAT_H
31 # include <sys/stat.h>
32 #endif
33 #ifdef HAVE_SYS_TIME_H
34 # include <sys/time.h>
35 #endif
36 #include <sys/uio.h>
37
38 #include <dirent.h>
39 #include <errno.h>
40 #include <fcntl.h>
41 #include <signal.h>
42 #include <stdarg.h>
43 #include <stdio.h>
44 #include <stdlib.h>
45 #include <string.h>
46 #include <unistd.h>
47
48 #include "xmalloc.h"
49 #include "ssherr.h"
50 #include "sshbuf.h"
51 #include "log.h"
52 #include "atomicio.h"
53 #include "progressmeter.h"
54 #include "misc.h"
55 #include "utf8.h"
56
57 #include "sftp.h"
58 #include "sftp-common.h"
59 #include "sftp-client.h"
60
61 extern volatile sig_atomic_t interrupted;
62 extern int showprogress;
63
64 /* Minimum amount of data to read at a time */
65 #define MIN_READ_SIZE 512
66
67 /* Maximum depth to descend in directory trees */
68 #define MAX_DIR_DEPTH 64
69
70 /* Directory separator characters */
71 #ifdef HAVE_CYGWIN
72 # define SFTP_DIRECTORY_CHARS "/\\"
73 #else /* HAVE_CYGWIN */
74 # define SFTP_DIRECTORY_CHARS "/"
75 #endif /* HAVE_CYGWIN */
76
77 struct sftp_conn {
78 int fd_in;
79 int fd_out;
80 u_int transfer_buflen;
81 u_int num_requests;
82 u_int version;
83 u_int msg_id;
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
89 u_int exts;
90 u_int64_t limit_kbps;
91 struct bwlimit bwlimit_in, bwlimit_out;
92 };
93
94 static u_char *
95 get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
96 const char *errfmt, ...) __attribute__((format(printf, 4, 5)));
97
98 /* ARGSUSED */
99 static int
sftpio(void * _bwlimit,size_t amount)100 sftpio(void *_bwlimit, size_t amount)
101 {
102 struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit;
103
104 bandwidth_limit(bwlimit, amount);
105 return 0;
106 }
107
108 static void
send_msg(struct sftp_conn * conn,struct sshbuf * m)109 send_msg(struct sftp_conn *conn, struct sshbuf *m)
110 {
111 u_char mlen[4];
112 struct iovec iov[2];
113
114 if (sshbuf_len(m) > SFTP_MAX_MSG_LENGTH)
115 fatal("Outbound message too long %zu", sshbuf_len(m));
116
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);
123
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));
128
129 sshbuf_reset(m);
130 }
131
132 static void
get_msg_extended(struct sftp_conn * conn,struct sshbuf * m,int initial)133 get_msg_extended(struct sftp_conn *conn, struct sshbuf *m, int initial)
134 {
135 u_int msg_len;
136 u_char *p;
137 int r;
138
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) {
143 if (errno == EPIPE || errno == ECONNRESET)
144 fatal("Connection closed");
145 else
146 fatal("Couldn't read packet: %s", strerror(errno));
147 }
148
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 do_log2(initial ? SYSLOG_LEVEL_ERROR : SYSLOG_LEVEL_FATAL,
153 "Received message too long %u", msg_len);
154 fatal("Ensure the remote shell produces no output "
155 "for non-interactive sessions.");
156 }
157
158 if ((r = sshbuf_reserve(m, msg_len, &p)) != 0)
159 fatal("%s: buffer error: %s", __func__, ssh_err(r));
160 if (atomicio6(read, conn->fd_in, p, msg_len,
161 conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in)
162 != msg_len) {
163 if (errno == EPIPE)
164 fatal("Connection closed");
165 else
166 fatal("Read packet: %s", strerror(errno));
167 }
168 }
169
170 static void
get_msg(struct sftp_conn * conn,struct sshbuf * m)171 get_msg(struct sftp_conn *conn, struct sshbuf *m)
172 {
173 get_msg_extended(conn, m, 0);
174 }
175
176 static void
send_string_request(struct sftp_conn * conn,u_int id,u_int code,const char * s,u_int len)177 send_string_request(struct sftp_conn *conn, u_int id, u_int code, const char *s,
178 u_int len)
179 {
180 struct sshbuf *msg;
181 int r;
182
183 if ((msg = sshbuf_new()) == NULL)
184 fatal("%s: sshbuf_new failed", __func__);
185 if ((r = sshbuf_put_u8(msg, code)) != 0 ||
186 (r = sshbuf_put_u32(msg, id)) != 0 ||
187 (r = sshbuf_put_string(msg, s, len)) != 0)
188 fatal("%s: buffer error: %s", __func__, ssh_err(r));
189 send_msg(conn, msg);
190 debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
191 sshbuf_free(msg);
192 }
193
194 static void
send_string_attrs_request(struct sftp_conn * conn,u_int id,u_int code,const void * s,u_int len,Attrib * a)195 send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
196 const void *s, u_int len, Attrib *a)
197 {
198 struct sshbuf *msg;
199 int r;
200
201 if ((msg = sshbuf_new()) == NULL)
202 fatal("%s: sshbuf_new failed", __func__);
203 if ((r = sshbuf_put_u8(msg, code)) != 0 ||
204 (r = sshbuf_put_u32(msg, id)) != 0 ||
205 (r = sshbuf_put_string(msg, s, len)) != 0 ||
206 (r = encode_attrib(msg, a)) != 0)
207 fatal("%s: buffer error: %s", __func__, ssh_err(r));
208 send_msg(conn, msg);
209 debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
210 sshbuf_free(msg);
211 }
212
213 static u_int
get_status(struct sftp_conn * conn,u_int expected_id)214 get_status(struct sftp_conn *conn, u_int expected_id)
215 {
216 struct sshbuf *msg;
217 u_char type;
218 u_int id, status;
219 int r;
220
221 if ((msg = sshbuf_new()) == NULL)
222 fatal("%s: sshbuf_new failed", __func__);
223 get_msg(conn, msg);
224 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
225 (r = sshbuf_get_u32(msg, &id)) != 0)
226 fatal("%s: buffer error: %s", __func__, ssh_err(r));
227
228 if (id != expected_id)
229 fatal("ID mismatch (%u != %u)", id, expected_id);
230 if (type != SSH2_FXP_STATUS)
231 fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
232 SSH2_FXP_STATUS, type);
233
234 if ((r = sshbuf_get_u32(msg, &status)) != 0)
235 fatal("%s: buffer error: %s", __func__, ssh_err(r));
236 sshbuf_free(msg);
237
238 debug3("SSH2_FXP_STATUS %u", status);
239
240 return status;
241 }
242
243 static u_char *
get_handle(struct sftp_conn * conn,u_int expected_id,size_t * len,const char * errfmt,...)244 get_handle(struct sftp_conn *conn, u_int expected_id, size_t *len,
245 const char *errfmt, ...)
246 {
247 struct sshbuf *msg;
248 u_int id, status;
249 u_char type;
250 u_char *handle;
251 char errmsg[256];
252 va_list args;
253 int r;
254
255 va_start(args, errfmt);
256 if (errfmt != NULL)
257 vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
258 va_end(args);
259
260 if ((msg = sshbuf_new()) == NULL)
261 fatal("%s: sshbuf_new failed", __func__);
262 get_msg(conn, msg);
263 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
264 (r = sshbuf_get_u32(msg, &id)) != 0)
265 fatal("%s: buffer error: %s", __func__, ssh_err(r));
266
267 if (id != expected_id)
268 fatal("%s: ID mismatch (%u != %u)",
269 errfmt == NULL ? __func__ : errmsg, id, expected_id);
270 if (type == SSH2_FXP_STATUS) {
271 if ((r = sshbuf_get_u32(msg, &status)) != 0)
272 fatal("%s: buffer error: %s", __func__, ssh_err(r));
273 if (errfmt != NULL)
274 error("%s: %s", errmsg, fx2txt(status));
275 sshbuf_free(msg);
276 return(NULL);
277 } else if (type != SSH2_FXP_HANDLE)
278 fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
279 errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
280
281 if ((r = sshbuf_get_string(msg, &handle, len)) != 0)
282 fatal("%s: buffer error: %s", __func__, ssh_err(r));
283 sshbuf_free(msg);
284
285 return handle;
286 }
287
288 static Attrib *
get_decode_stat(struct sftp_conn * conn,u_int expected_id,int quiet)289 get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
290 {
291 struct sshbuf *msg;
292 u_int id;
293 u_char type;
294 int r;
295 static Attrib a;
296
297 if ((msg = sshbuf_new()) == NULL)
298 fatal("%s: sshbuf_new failed", __func__);
299 get_msg(conn, msg);
300
301 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
302 (r = sshbuf_get_u32(msg, &id)) != 0)
303 fatal("%s: buffer error: %s", __func__, ssh_err(r));
304
305 debug3("Received stat reply T:%u I:%u", type, id);
306 if (id != expected_id)
307 fatal("ID mismatch (%u != %u)", id, expected_id);
308 if (type == SSH2_FXP_STATUS) {
309 u_int status;
310
311 if ((r = sshbuf_get_u32(msg, &status)) != 0)
312 fatal("%s: buffer error: %s", __func__, ssh_err(r));
313 if (quiet)
314 debug("Couldn't stat remote file: %s", fx2txt(status));
315 else
316 error("Couldn't stat remote file: %s", fx2txt(status));
317 sshbuf_free(msg);
318 return(NULL);
319 } else if (type != SSH2_FXP_ATTRS) {
320 fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
321 SSH2_FXP_ATTRS, type);
322 }
323 if ((r = decode_attrib(msg, &a)) != 0) {
324 error("%s: couldn't decode attrib: %s", __func__, ssh_err(r));
325 sshbuf_free(msg);
326 return NULL;
327 }
328 sshbuf_free(msg);
329
330 return &a;
331 }
332
333 static int
get_decode_statvfs(struct sftp_conn * conn,struct sftp_statvfs * st,u_int expected_id,int quiet)334 get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
335 u_int expected_id, int quiet)
336 {
337 struct sshbuf *msg;
338 u_char type;
339 u_int id;
340 u_int64_t flag;
341 int r;
342
343 if ((msg = sshbuf_new()) == NULL)
344 fatal("%s: sshbuf_new failed", __func__);
345 get_msg(conn, msg);
346
347 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
348 (r = sshbuf_get_u32(msg, &id)) != 0)
349 fatal("%s: buffer error: %s", __func__, ssh_err(r));
350
351 debug3("Received statvfs reply T:%u I:%u", type, id);
352 if (id != expected_id)
353 fatal("ID mismatch (%u != %u)", id, expected_id);
354 if (type == SSH2_FXP_STATUS) {
355 u_int status;
356
357 if ((r = sshbuf_get_u32(msg, &status)) != 0)
358 fatal("%s: buffer error: %s", __func__, ssh_err(r));
359 if (quiet)
360 debug("Couldn't statvfs: %s", fx2txt(status));
361 else
362 error("Couldn't statvfs: %s", fx2txt(status));
363 sshbuf_free(msg);
364 return -1;
365 } else if (type != SSH2_FXP_EXTENDED_REPLY) {
366 fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
367 SSH2_FXP_EXTENDED_REPLY, type);
368 }
369
370 memset(st, 0, sizeof(*st));
371 if ((r = sshbuf_get_u64(msg, &st->f_bsize)) != 0 ||
372 (r = sshbuf_get_u64(msg, &st->f_frsize)) != 0 ||
373 (r = sshbuf_get_u64(msg, &st->f_blocks)) != 0 ||
374 (r = sshbuf_get_u64(msg, &st->f_bfree)) != 0 ||
375 (r = sshbuf_get_u64(msg, &st->f_bavail)) != 0 ||
376 (r = sshbuf_get_u64(msg, &st->f_files)) != 0 ||
377 (r = sshbuf_get_u64(msg, &st->f_ffree)) != 0 ||
378 (r = sshbuf_get_u64(msg, &st->f_favail)) != 0 ||
379 (r = sshbuf_get_u64(msg, &st->f_fsid)) != 0 ||
380 (r = sshbuf_get_u64(msg, &flag)) != 0 ||
381 (r = sshbuf_get_u64(msg, &st->f_namemax)) != 0)
382 fatal("%s: buffer error: %s", __func__, ssh_err(r));
383
384 st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
385 st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
386
387 sshbuf_free(msg);
388
389 return 0;
390 }
391
392 struct sftp_conn *
do_init(int fd_in,int fd_out,u_int transfer_buflen,u_int num_requests,u_int64_t limit_kbps)393 do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
394 u_int64_t limit_kbps)
395 {
396 u_char type;
397 struct sshbuf *msg;
398 struct sftp_conn *ret;
399 int r;
400
401 ret = xcalloc(1, sizeof(*ret));
402 ret->msg_id = 1;
403 ret->fd_in = fd_in;
404 ret->fd_out = fd_out;
405 ret->transfer_buflen = transfer_buflen;
406 ret->num_requests = num_requests;
407 ret->exts = 0;
408 ret->limit_kbps = 0;
409
410 if ((msg = sshbuf_new()) == NULL)
411 fatal("%s: sshbuf_new failed", __func__);
412 if ((r = sshbuf_put_u8(msg, SSH2_FXP_INIT)) != 0 ||
413 (r = sshbuf_put_u32(msg, SSH2_FILEXFER_VERSION)) != 0)
414 fatal("%s: buffer error: %s", __func__, ssh_err(r));
415 send_msg(ret, msg);
416
417 sshbuf_reset(msg);
418
419 get_msg_extended(ret, msg, 1);
420
421 /* Expecting a VERSION reply */
422 if ((r = sshbuf_get_u8(msg, &type)) != 0)
423 fatal("%s: buffer error: %s", __func__, ssh_err(r));
424 if (type != SSH2_FXP_VERSION) {
425 error("Invalid packet back from SSH2_FXP_INIT (type %u)",
426 type);
427 sshbuf_free(msg);
428 free(ret);
429 return(NULL);
430 }
431 if ((r = sshbuf_get_u32(msg, &ret->version)) != 0)
432 fatal("%s: buffer error: %s", __func__, ssh_err(r));
433
434 debug2("Remote version: %u", ret->version);
435
436 /* Check for extensions */
437 while (sshbuf_len(msg) > 0) {
438 char *name;
439 u_char *value;
440 size_t vlen;
441 int known = 0;
442
443 if ((r = sshbuf_get_cstring(msg, &name, NULL)) != 0 ||
444 (r = sshbuf_get_string(msg, &value, &vlen)) != 0)
445 fatal("%s: buffer error: %s", __func__, ssh_err(r));
446 if (strcmp(name, "[email protected]") == 0 &&
447 strcmp((char *)value, "1") == 0) {
448 ret->exts |= SFTP_EXT_POSIX_RENAME;
449 known = 1;
450 } else if (strcmp(name, "[email protected]") == 0 &&
451 strcmp((char *)value, "2") == 0) {
452 ret->exts |= SFTP_EXT_STATVFS;
453 known = 1;
454 } else if (strcmp(name, "[email protected]") == 0 &&
455 strcmp((char *)value, "2") == 0) {
456 ret->exts |= SFTP_EXT_FSTATVFS;
457 known = 1;
458 } else if (strcmp(name, "[email protected]") == 0 &&
459 strcmp((char *)value, "1") == 0) {
460 ret->exts |= SFTP_EXT_HARDLINK;
461 known = 1;
462 } else if (strcmp(name, "[email protected]") == 0 &&
463 strcmp((char *)value, "1") == 0) {
464 ret->exts |= SFTP_EXT_FSYNC;
465 known = 1;
466 }
467 if (known) {
468 debug2("Server supports extension \"%s\" revision %s",
469 name, value);
470 } else {
471 debug2("Unrecognised server extension \"%s\"", name);
472 }
473 free(name);
474 free(value);
475 }
476
477 sshbuf_free(msg);
478
479 /* Some filexfer v.0 servers don't support large packets */
480 if (ret->version == 0)
481 ret->transfer_buflen = MINIMUM(ret->transfer_buflen, 20480);
482
483 ret->limit_kbps = limit_kbps;
484 if (ret->limit_kbps > 0) {
485 bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
486 ret->transfer_buflen);
487 bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
488 ret->transfer_buflen);
489 }
490
491 return ret;
492 }
493
494 u_int
sftp_proto_version(struct sftp_conn * conn)495 sftp_proto_version(struct sftp_conn *conn)
496 {
497 return conn->version;
498 }
499
500 int
do_close(struct sftp_conn * conn,const u_char * handle,u_int handle_len)501 do_close(struct sftp_conn *conn, const u_char *handle, u_int handle_len)
502 {
503 u_int id, status;
504 struct sshbuf *msg;
505 int r;
506
507 if ((msg = sshbuf_new()) == NULL)
508 fatal("%s: sshbuf_new failed", __func__);
509
510 id = conn->msg_id++;
511 if ((r = sshbuf_put_u8(msg, SSH2_FXP_CLOSE)) != 0 ||
512 (r = sshbuf_put_u32(msg, id)) != 0 ||
513 (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
514 fatal("%s: buffer error: %s", __func__, ssh_err(r));
515 send_msg(conn, msg);
516 debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
517
518 status = get_status(conn, id);
519 if (status != SSH2_FX_OK)
520 error("Couldn't close file: %s", fx2txt(status));
521
522 sshbuf_free(msg);
523
524 return status == SSH2_FX_OK ? 0 : -1;
525 }
526
527
528 static int
do_lsreaddir(struct sftp_conn * conn,const char * path,int print_flag,SFTP_DIRENT *** dir)529 do_lsreaddir(struct sftp_conn *conn, const char *path, int print_flag,
530 SFTP_DIRENT ***dir)
531 {
532 struct sshbuf *msg;
533 u_int count, id, i, expected_id, ents = 0;
534 size_t handle_len;
535 u_char type, *handle;
536 int status = SSH2_FX_FAILURE;
537 int r;
538
539 if (dir)
540 *dir = NULL;
541
542 id = conn->msg_id++;
543
544 if ((msg = sshbuf_new()) == NULL)
545 fatal("%s: sshbuf_new failed", __func__);
546 if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPENDIR)) != 0 ||
547 (r = sshbuf_put_u32(msg, id)) != 0 ||
548 (r = sshbuf_put_cstring(msg, path)) != 0)
549 fatal("%s: buffer error: %s", __func__, ssh_err(r));
550 send_msg(conn, msg);
551
552 handle = get_handle(conn, id, &handle_len,
553 "remote readdir(\"%s\")", path);
554 if (handle == NULL) {
555 sshbuf_free(msg);
556 return -1;
557 }
558
559 if (dir) {
560 ents = 0;
561 *dir = xcalloc(1, sizeof(**dir));
562 (*dir)[0] = NULL;
563 }
564
565 for (; !interrupted;) {
566 id = expected_id = conn->msg_id++;
567
568 debug3("Sending SSH2_FXP_READDIR I:%u", id);
569
570 sshbuf_reset(msg);
571 if ((r = sshbuf_put_u8(msg, SSH2_FXP_READDIR)) != 0 ||
572 (r = sshbuf_put_u32(msg, id)) != 0 ||
573 (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
574 fatal("%s: buffer error: %s", __func__, ssh_err(r));
575 send_msg(conn, msg);
576
577 sshbuf_reset(msg);
578
579 get_msg(conn, msg);
580
581 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
582 (r = sshbuf_get_u32(msg, &id)) != 0)
583 fatal("%s: buffer error: %s", __func__, ssh_err(r));
584
585 debug3("Received reply T:%u I:%u", type, id);
586
587 if (id != expected_id)
588 fatal("ID mismatch (%u != %u)", id, expected_id);
589
590 if (type == SSH2_FXP_STATUS) {
591 u_int rstatus;
592
593 if ((r = sshbuf_get_u32(msg, &rstatus)) != 0)
594 fatal("%s: buffer error: %s",
595 __func__, ssh_err(r));
596 debug3("Received SSH2_FXP_STATUS %d", rstatus);
597 if (rstatus == SSH2_FX_EOF)
598 break;
599 error("Couldn't read directory: %s", fx2txt(rstatus));
600 goto out;
601 } else if (type != SSH2_FXP_NAME)
602 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
603 SSH2_FXP_NAME, type);
604
605 if ((r = sshbuf_get_u32(msg, &count)) != 0)
606 fatal("%s: buffer error: %s", __func__, ssh_err(r));
607 if (count > SSHBUF_SIZE_MAX)
608 fatal("%s: nonsensical number of entries", __func__);
609 if (count == 0)
610 break;
611 debug3("Received %d SSH2_FXP_NAME responses", count);
612 for (i = 0; i < count; i++) {
613 char *filename, *longname;
614 Attrib a;
615
616 if ((r = sshbuf_get_cstring(msg, &filename,
617 NULL)) != 0 ||
618 (r = sshbuf_get_cstring(msg, &longname,
619 NULL)) != 0)
620 fatal("%s: buffer error: %s",
621 __func__, ssh_err(r));
622 if ((r = decode_attrib(msg, &a)) != 0) {
623 error("%s: couldn't decode attrib: %s",
624 __func__, ssh_err(r));
625 free(filename);
626 free(longname);
627 sshbuf_free(msg);
628 return -1;
629 }
630
631 if (print_flag)
632 mprintf("%s\n", longname);
633
634 /*
635 * Directory entries should never contain '/'
636 * These can be used to attack recursive ops
637 * (e.g. send '../../../../etc/passwd')
638 */
639 if (strpbrk(filename, SFTP_DIRECTORY_CHARS) != NULL) {
640 error("Server sent suspect path \"%s\" "
641 "during readdir of \"%s\"", filename, path);
642 } else if (dir) {
643 *dir = xreallocarray(*dir, ents + 2, sizeof(**dir));
644 (*dir)[ents] = xcalloc(1, sizeof(***dir));
645 (*dir)[ents]->filename = xstrdup(filename);
646 (*dir)[ents]->longname = xstrdup(longname);
647 memcpy(&(*dir)[ents]->a, &a, sizeof(a));
648 (*dir)[++ents] = NULL;
649 }
650 free(filename);
651 free(longname);
652 }
653 }
654 status = 0;
655
656 out:
657 sshbuf_free(msg);
658 do_close(conn, handle, handle_len);
659 free(handle);
660
661 if (status != 0 && dir != NULL) {
662 /* Don't return results on error */
663 free_sftp_dirents(*dir);
664 *dir = NULL;
665 } else if (interrupted && dir != NULL && *dir != NULL) {
666 /* Don't return partial matches on interrupt */
667 free_sftp_dirents(*dir);
668 *dir = xcalloc(1, sizeof(**dir));
669 **dir = NULL;
670 }
671
672 return status == SSH2_FX_OK ? 0 : -1;
673 }
674
675 int
do_readdir(struct sftp_conn * conn,const char * path,SFTP_DIRENT *** dir)676 do_readdir(struct sftp_conn *conn, const char *path, SFTP_DIRENT ***dir)
677 {
678 return(do_lsreaddir(conn, path, 0, dir));
679 }
680
free_sftp_dirents(SFTP_DIRENT ** s)681 void free_sftp_dirents(SFTP_DIRENT **s)
682 {
683 int i;
684
685 if (s == NULL)
686 return;
687 for (i = 0; s[i]; i++) {
688 free(s[i]->filename);
689 free(s[i]->longname);
690 free(s[i]);
691 }
692 free(s);
693 }
694
695 int
do_rm(struct sftp_conn * conn,const char * path)696 do_rm(struct sftp_conn *conn, const char *path)
697 {
698 u_int status, id;
699
700 debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
701
702 id = conn->msg_id++;
703 send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
704 status = get_status(conn, id);
705 if (status != SSH2_FX_OK)
706 error("Couldn't delete file: %s", fx2txt(status));
707 return status == SSH2_FX_OK ? 0 : -1;
708 }
709
710 int
do_mkdir(struct sftp_conn * conn,const char * path,Attrib * a,int print_flag)711 do_mkdir(struct sftp_conn *conn, const char *path, Attrib *a, int print_flag)
712 {
713 u_int status, id;
714
715 id = conn->msg_id++;
716 send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
717 strlen(path), a);
718
719 status = get_status(conn, id);
720 if (status != SSH2_FX_OK && print_flag)
721 error("Couldn't create directory: %s", fx2txt(status));
722
723 return status == SSH2_FX_OK ? 0 : -1;
724 }
725
726 int
do_rmdir(struct sftp_conn * conn,const char * path)727 do_rmdir(struct sftp_conn *conn, const char *path)
728 {
729 u_int status, id;
730
731 id = conn->msg_id++;
732 send_string_request(conn, id, SSH2_FXP_RMDIR, path,
733 strlen(path));
734
735 status = get_status(conn, id);
736 if (status != SSH2_FX_OK)
737 error("Couldn't remove directory: %s", fx2txt(status));
738
739 return status == SSH2_FX_OK ? 0 : -1;
740 }
741
742 Attrib *
do_stat(struct sftp_conn * conn,const char * path,int quiet)743 do_stat(struct sftp_conn *conn, const char *path, int quiet)
744 {
745 u_int id;
746
747 id = conn->msg_id++;
748
749 send_string_request(conn, id,
750 conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
751 path, strlen(path));
752
753 return(get_decode_stat(conn, id, quiet));
754 }
755
756 Attrib *
do_lstat(struct sftp_conn * conn,const char * path,int quiet)757 do_lstat(struct sftp_conn *conn, const char *path, int quiet)
758 {
759 u_int id;
760
761 if (conn->version == 0) {
762 if (quiet)
763 debug("Server version does not support lstat operation");
764 else
765 logit("Server version does not support lstat operation");
766 return(do_stat(conn, path, quiet));
767 }
768
769 id = conn->msg_id++;
770 send_string_request(conn, id, SSH2_FXP_LSTAT, path,
771 strlen(path));
772
773 return(get_decode_stat(conn, id, quiet));
774 }
775
776 #ifdef notyet
777 Attrib *
do_fstat(struct sftp_conn * conn,const u_char * handle,u_int handle_len,int quiet)778 do_fstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
779 int quiet)
780 {
781 u_int id;
782
783 id = conn->msg_id++;
784 send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
785 handle_len);
786
787 return(get_decode_stat(conn, id, quiet));
788 }
789 #endif
790
791 int
do_setstat(struct sftp_conn * conn,const char * path,Attrib * a)792 do_setstat(struct sftp_conn *conn, const char *path, Attrib *a)
793 {
794 u_int status, id;
795
796 id = conn->msg_id++;
797 send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
798 strlen(path), a);
799
800 status = get_status(conn, id);
801 if (status != SSH2_FX_OK)
802 error("Couldn't setstat on \"%s\": %s", path,
803 fx2txt(status));
804
805 return status == SSH2_FX_OK ? 0 : -1;
806 }
807
808 int
do_fsetstat(struct sftp_conn * conn,const u_char * handle,u_int handle_len,Attrib * a)809 do_fsetstat(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
810 Attrib *a)
811 {
812 u_int status, id;
813
814 id = conn->msg_id++;
815 send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
816 handle_len, a);
817
818 status = get_status(conn, id);
819 if (status != SSH2_FX_OK)
820 error("Couldn't fsetstat: %s", fx2txt(status));
821
822 return status == SSH2_FX_OK ? 0 : -1;
823 }
824
825 char *
do_realpath(struct sftp_conn * conn,const char * path)826 do_realpath(struct sftp_conn *conn, const char *path)
827 {
828 struct sshbuf *msg;
829 u_int expected_id, count, id;
830 char *filename, *longname;
831 Attrib a;
832 u_char type;
833 int r;
834
835 expected_id = id = conn->msg_id++;
836 send_string_request(conn, id, SSH2_FXP_REALPATH, path,
837 strlen(path));
838
839 if ((msg = sshbuf_new()) == NULL)
840 fatal("%s: sshbuf_new failed", __func__);
841
842 get_msg(conn, msg);
843 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
844 (r = sshbuf_get_u32(msg, &id)) != 0)
845 fatal("%s: buffer error: %s", __func__, ssh_err(r));
846
847 if (id != expected_id)
848 fatal("ID mismatch (%u != %u)", id, expected_id);
849
850 if (type == SSH2_FXP_STATUS) {
851 u_int status;
852
853 if ((r = sshbuf_get_u32(msg, &status)) != 0)
854 fatal("%s: buffer error: %s", __func__, ssh_err(r));
855 error("Couldn't canonicalize: %s", fx2txt(status));
856 sshbuf_free(msg);
857 return NULL;
858 } else if (type != SSH2_FXP_NAME)
859 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
860 SSH2_FXP_NAME, type);
861
862 if ((r = sshbuf_get_u32(msg, &count)) != 0)
863 fatal("%s: buffer error: %s", __func__, ssh_err(r));
864 if (count != 1)
865 fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
866
867 if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
868 (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
869 (r = decode_attrib(msg, &a)) != 0)
870 fatal("%s: buffer error: %s", __func__, ssh_err(r));
871
872 debug3("SSH_FXP_REALPATH %s -> %s size %lu", path, filename,
873 (unsigned long)a.size);
874
875 free(longname);
876
877 sshbuf_free(msg);
878
879 return(filename);
880 }
881
882 int
do_rename(struct sftp_conn * conn,const char * oldpath,const char * newpath,int force_legacy)883 do_rename(struct sftp_conn *conn, const char *oldpath, const char *newpath,
884 int force_legacy)
885 {
886 struct sshbuf *msg;
887 u_int status, id;
888 int r, use_ext = (conn->exts & SFTP_EXT_POSIX_RENAME) && !force_legacy;
889
890 if ((msg = sshbuf_new()) == NULL)
891 fatal("%s: sshbuf_new failed", __func__);
892
893 /* Send rename request */
894 id = conn->msg_id++;
895 if (use_ext) {
896 if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
897 (r = sshbuf_put_u32(msg, id)) != 0 ||
898 (r = sshbuf_put_cstring(msg,
899 "[email protected]")) != 0)
900 fatal("%s: buffer error: %s", __func__, ssh_err(r));
901 } else {
902 if ((r = sshbuf_put_u8(msg, SSH2_FXP_RENAME)) != 0 ||
903 (r = sshbuf_put_u32(msg, id)) != 0)
904 fatal("%s: buffer error: %s", __func__, ssh_err(r));
905 }
906 if ((r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
907 (r = sshbuf_put_cstring(msg, newpath)) != 0)
908 fatal("%s: buffer error: %s", __func__, ssh_err(r));
909 send_msg(conn, msg);
910 debug3("Sent message %s \"%s\" -> \"%s\"",
911 use_ext ? "[email protected]" :
912 "SSH2_FXP_RENAME", oldpath, newpath);
913 sshbuf_free(msg);
914
915 status = get_status(conn, id);
916 if (status != SSH2_FX_OK)
917 error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
918 newpath, fx2txt(status));
919
920 return status == SSH2_FX_OK ? 0 : -1;
921 }
922
923 int
do_hardlink(struct sftp_conn * conn,const char * oldpath,const char * newpath)924 do_hardlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
925 {
926 struct sshbuf *msg;
927 u_int status, id;
928 int r;
929
930 if ((conn->exts & SFTP_EXT_HARDLINK) == 0) {
931 error("Server does not support [email protected] extension");
932 return -1;
933 }
934
935 if ((msg = sshbuf_new()) == NULL)
936 fatal("%s: sshbuf_new failed", __func__);
937
938 /* Send link request */
939 id = conn->msg_id++;
940 if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
941 (r = sshbuf_put_u32(msg, id)) != 0 ||
942 (r = sshbuf_put_cstring(msg, "[email protected]")) != 0 ||
943 (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
944 (r = sshbuf_put_cstring(msg, newpath)) != 0)
945 fatal("%s: buffer error: %s", __func__, ssh_err(r));
946 send_msg(conn, msg);
947 debug3("Sent message [email protected] \"%s\" -> \"%s\"",
948 oldpath, newpath);
949 sshbuf_free(msg);
950
951 status = get_status(conn, id);
952 if (status != SSH2_FX_OK)
953 error("Couldn't link file \"%s\" to \"%s\": %s", oldpath,
954 newpath, fx2txt(status));
955
956 return status == SSH2_FX_OK ? 0 : -1;
957 }
958
959 int
do_symlink(struct sftp_conn * conn,const char * oldpath,const char * newpath)960 do_symlink(struct sftp_conn *conn, const char *oldpath, const char *newpath)
961 {
962 struct sshbuf *msg;
963 u_int status, id;
964 int r;
965
966 if (conn->version < 3) {
967 error("This server does not support the symlink operation");
968 return(SSH2_FX_OP_UNSUPPORTED);
969 }
970
971 if ((msg = sshbuf_new()) == NULL)
972 fatal("%s: sshbuf_new failed", __func__);
973
974 /* Send symlink request */
975 id = conn->msg_id++;
976 if ((r = sshbuf_put_u8(msg, SSH2_FXP_SYMLINK)) != 0 ||
977 (r = sshbuf_put_u32(msg, id)) != 0 ||
978 (r = sshbuf_put_cstring(msg, oldpath)) != 0 ||
979 (r = sshbuf_put_cstring(msg, newpath)) != 0)
980 fatal("%s: buffer error: %s", __func__, ssh_err(r));
981 send_msg(conn, msg);
982 debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
983 newpath);
984 sshbuf_free(msg);
985
986 status = get_status(conn, id);
987 if (status != SSH2_FX_OK)
988 error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
989 newpath, fx2txt(status));
990
991 return status == SSH2_FX_OK ? 0 : -1;
992 }
993
994 int
do_fsync(struct sftp_conn * conn,u_char * handle,u_int handle_len)995 do_fsync(struct sftp_conn *conn, u_char *handle, u_int handle_len)
996 {
997 struct sshbuf *msg;
998 u_int status, id;
999 int r;
1000
1001 /* Silently return if the extension is not supported */
1002 if ((conn->exts & SFTP_EXT_FSYNC) == 0)
1003 return -1;
1004
1005 /* Send fsync request */
1006 if ((msg = sshbuf_new()) == NULL)
1007 fatal("%s: sshbuf_new failed", __func__);
1008 id = conn->msg_id++;
1009 if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1010 (r = sshbuf_put_u32(msg, id)) != 0 ||
1011 (r = sshbuf_put_cstring(msg, "[email protected]")) != 0 ||
1012 (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1013 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1014 send_msg(conn, msg);
1015 debug3("Sent message [email protected] I:%u", id);
1016 sshbuf_free(msg);
1017
1018 status = get_status(conn, id);
1019 if (status != SSH2_FX_OK)
1020 error("Couldn't sync file: %s", fx2txt(status));
1021
1022 return status == SSH2_FX_OK ? 0 : -1;
1023 }
1024
1025 #ifdef notyet
1026 char *
do_readlink(struct sftp_conn * conn,const char * path)1027 do_readlink(struct sftp_conn *conn, const char *path)
1028 {
1029 struct sshbuf *msg;
1030 u_int expected_id, count, id;
1031 char *filename, *longname;
1032 Attrib a;
1033 u_char type;
1034 int r;
1035
1036 expected_id = id = conn->msg_id++;
1037 send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1038
1039 if ((msg = sshbuf_new()) == NULL)
1040 fatal("%s: sshbuf_new failed", __func__);
1041
1042 get_msg(conn, msg);
1043 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1044 (r = sshbuf_get_u32(msg, &id)) != 0)
1045 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1046
1047 if (id != expected_id)
1048 fatal("ID mismatch (%u != %u)", id, expected_id);
1049
1050 if (type == SSH2_FXP_STATUS) {
1051 u_int status;
1052
1053 if ((r = sshbuf_get_u32(msg, &status)) != 0)
1054 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1055 error("Couldn't readlink: %s", fx2txt(status));
1056 sshbuf_free(msg);
1057 return(NULL);
1058 } else if (type != SSH2_FXP_NAME)
1059 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1060 SSH2_FXP_NAME, type);
1061
1062 if ((r = sshbuf_get_u32(msg, &count)) != 0)
1063 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1064 if (count != 1)
1065 fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
1066
1067 if ((r = sshbuf_get_cstring(msg, &filename, NULL)) != 0 ||
1068 (r = sshbuf_get_cstring(msg, &longname, NULL)) != 0 ||
1069 (r = decode_attrib(msg, &a)) != 0)
1070 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1071
1072 debug3("SSH_FXP_READLINK %s -> %s", path, filename);
1073
1074 free(longname);
1075
1076 sshbuf_free(msg);
1077
1078 return filename;
1079 }
1080 #endif
1081
1082 int
do_statvfs(struct sftp_conn * conn,const char * path,struct sftp_statvfs * st,int quiet)1083 do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1084 int quiet)
1085 {
1086 struct sshbuf *msg;
1087 u_int id;
1088 int r;
1089
1090 if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
1091 error("Server does not support [email protected] extension");
1092 return -1;
1093 }
1094
1095 id = conn->msg_id++;
1096
1097 if ((msg = sshbuf_new()) == NULL)
1098 fatal("%s: sshbuf_new failed", __func__);
1099 sshbuf_reset(msg);
1100 if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1101 (r = sshbuf_put_u32(msg, id)) != 0 ||
1102 (r = sshbuf_put_cstring(msg, "[email protected]")) != 0 ||
1103 (r = sshbuf_put_cstring(msg, path)) != 0)
1104 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1105 send_msg(conn, msg);
1106 sshbuf_free(msg);
1107
1108 return get_decode_statvfs(conn, st, id, quiet);
1109 }
1110
1111 #ifdef notyet
1112 int
do_fstatvfs(struct sftp_conn * conn,const u_char * handle,u_int handle_len,struct sftp_statvfs * st,int quiet)1113 do_fstatvfs(struct sftp_conn *conn, const u_char *handle, u_int handle_len,
1114 struct sftp_statvfs *st, int quiet)
1115 {
1116 struct sshbuf *msg;
1117 u_int id;
1118
1119 if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
1120 error("Server does not support [email protected] extension");
1121 return -1;
1122 }
1123
1124 id = conn->msg_id++;
1125
1126 if ((msg = sshbuf_new()) == NULL)
1127 fatal("%s: sshbuf_new failed", __func__);
1128 sshbuf_reset(msg);
1129 if ((r = sshbuf_put_u8(msg, SSH2_FXP_EXTENDED)) != 0 ||
1130 (r = sshbuf_put_u32(msg, id)) != 0 ||
1131 (r = sshbuf_put_cstring(msg, "[email protected]")) != 0 ||
1132 (r = sshbuf_put_string(msg, handle, handle_len)) != 0)
1133 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1134 send_msg(conn, msg);
1135 sshbuf_free(msg);
1136
1137 return get_decode_statvfs(conn, st, id, quiet);
1138 }
1139 #endif
1140
1141 static void
send_read_request(struct sftp_conn * conn,u_int id,u_int64_t offset,u_int len,const u_char * handle,u_int handle_len)1142 send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
1143 u_int len, const u_char *handle, u_int handle_len)
1144 {
1145 struct sshbuf *msg;
1146 int r;
1147
1148 if ((msg = sshbuf_new()) == NULL)
1149 fatal("%s: sshbuf_new failed", __func__);
1150 sshbuf_reset(msg);
1151 if ((r = sshbuf_put_u8(msg, SSH2_FXP_READ)) != 0 ||
1152 (r = sshbuf_put_u32(msg, id)) != 0 ||
1153 (r = sshbuf_put_string(msg, handle, handle_len)) != 0 ||
1154 (r = sshbuf_put_u64(msg, offset)) != 0 ||
1155 (r = sshbuf_put_u32(msg, len)) != 0)
1156 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1157 send_msg(conn, msg);
1158 sshbuf_free(msg);
1159 }
1160
1161 int
do_download(struct sftp_conn * conn,const char * remote_path,const char * local_path,Attrib * a,int preserve_flag,int resume_flag,int fsync_flag)1162 do_download(struct sftp_conn *conn, const char *remote_path,
1163 const char *local_path, Attrib *a, int preserve_flag, int resume_flag,
1164 int fsync_flag)
1165 {
1166 Attrib junk;
1167 struct sshbuf *msg;
1168 u_char *handle;
1169 int local_fd = -1, write_error;
1170 int read_error, write_errno, reordered = 0, r;
1171 u_int64_t offset = 0, size, highwater;
1172 u_int mode, id, buflen, num_req, max_req, status = SSH2_FX_OK;
1173 off_t progress_counter;
1174 size_t handle_len;
1175 struct stat st;
1176 struct request {
1177 u_int id;
1178 size_t len;
1179 u_int64_t offset;
1180 TAILQ_ENTRY(request) tq;
1181 };
1182 TAILQ_HEAD(reqhead, request) requests;
1183 struct request *req;
1184 u_char type;
1185
1186 TAILQ_INIT(&requests);
1187
1188 if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
1189 return -1;
1190
1191 /* Do not preserve set[ug]id here, as we do not preserve ownership */
1192 if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1193 mode = a->perm & 0777;
1194 else
1195 mode = 0666;
1196
1197 if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1198 (!S_ISREG(a->perm))) {
1199 error("Cannot download non-regular file: %s", remote_path);
1200 return(-1);
1201 }
1202
1203 if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
1204 size = a->size;
1205 else
1206 size = 0;
1207
1208 buflen = conn->transfer_buflen;
1209 if ((msg = sshbuf_new()) == NULL)
1210 fatal("%s: sshbuf_new failed", __func__);
1211
1212 attrib_clear(&junk); /* Send empty attributes */
1213
1214 /* Send open request */
1215 id = conn->msg_id++;
1216 if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1217 (r = sshbuf_put_u32(msg, id)) != 0 ||
1218 (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1219 (r = sshbuf_put_u32(msg, SSH2_FXF_READ)) != 0 ||
1220 (r = encode_attrib(msg, &junk)) != 0)
1221 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1222 send_msg(conn, msg);
1223 debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1224
1225 handle = get_handle(conn, id, &handle_len,
1226 "remote open(\"%s\")", remote_path);
1227 if (handle == NULL) {
1228 sshbuf_free(msg);
1229 return(-1);
1230 }
1231
1232 local_fd = open(local_path,
1233 O_WRONLY | O_CREAT | (resume_flag ? 0 : O_TRUNC), mode | S_IWUSR);
1234 if (local_fd == -1) {
1235 error("Couldn't open local file \"%s\" for writing: %s",
1236 local_path, strerror(errno));
1237 goto fail;
1238 }
1239 offset = highwater = 0;
1240 if (resume_flag) {
1241 if (fstat(local_fd, &st) == -1) {
1242 error("Unable to stat local file \"%s\": %s",
1243 local_path, strerror(errno));
1244 goto fail;
1245 }
1246 if (st.st_size < 0) {
1247 error("\"%s\" has negative size", local_path);
1248 goto fail;
1249 }
1250 if ((u_int64_t)st.st_size > size) {
1251 error("Unable to resume download of \"%s\": "
1252 "local file is larger than remote", local_path);
1253 fail:
1254 do_close(conn, handle, handle_len);
1255 sshbuf_free(msg);
1256 free(handle);
1257 if (local_fd != -1)
1258 close(local_fd);
1259 return -1;
1260 }
1261 offset = highwater = st.st_size;
1262 }
1263
1264 /* Read from remote and write to local */
1265 write_error = read_error = write_errno = num_req = 0;
1266 max_req = 1;
1267 progress_counter = offset;
1268
1269 if (showprogress && size != 0)
1270 start_progress_meter(remote_path, size, &progress_counter);
1271
1272 while (num_req > 0 || max_req > 0) {
1273 u_char *data;
1274 size_t len;
1275
1276 /*
1277 * Simulate EOF on interrupt: stop sending new requests and
1278 * allow outstanding requests to drain gracefully
1279 */
1280 if (interrupted) {
1281 if (num_req == 0) /* If we haven't started yet... */
1282 break;
1283 max_req = 0;
1284 }
1285
1286 /* Send some more requests */
1287 while (num_req < max_req) {
1288 debug3("Request range %llu -> %llu (%d/%d)",
1289 (unsigned long long)offset,
1290 (unsigned long long)offset + buflen - 1,
1291 num_req, max_req);
1292 req = xcalloc(1, sizeof(*req));
1293 req->id = conn->msg_id++;
1294 req->len = buflen;
1295 req->offset = offset;
1296 offset += buflen;
1297 num_req++;
1298 TAILQ_INSERT_TAIL(&requests, req, tq);
1299 send_read_request(conn, req->id, req->offset,
1300 req->len, handle, handle_len);
1301 }
1302
1303 sshbuf_reset(msg);
1304 get_msg(conn, msg);
1305 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1306 (r = sshbuf_get_u32(msg, &id)) != 0)
1307 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1308 debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1309
1310 /* Find the request in our queue */
1311 for (req = TAILQ_FIRST(&requests);
1312 req != NULL && req->id != id;
1313 req = TAILQ_NEXT(req, tq))
1314 ;
1315 if (req == NULL)
1316 fatal("Unexpected reply %u", id);
1317
1318 switch (type) {
1319 case SSH2_FXP_STATUS:
1320 if ((r = sshbuf_get_u32(msg, &status)) != 0)
1321 fatal("%s: buffer error: %s",
1322 __func__, ssh_err(r));
1323 if (status != SSH2_FX_EOF)
1324 read_error = 1;
1325 max_req = 0;
1326 TAILQ_REMOVE(&requests, req, tq);
1327 free(req);
1328 num_req--;
1329 break;
1330 case SSH2_FXP_DATA:
1331 if ((r = sshbuf_get_string(msg, &data, &len)) != 0)
1332 fatal("%s: buffer error: %s",
1333 __func__, ssh_err(r));
1334 debug3("Received data %llu -> %llu",
1335 (unsigned long long)req->offset,
1336 (unsigned long long)req->offset + len - 1);
1337 if (len > req->len)
1338 fatal("Received more data than asked for "
1339 "%zu > %zu", len, req->len);
1340 if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1341 atomicio(vwrite, local_fd, data, len) != len) &&
1342 !write_error) {
1343 write_errno = errno;
1344 write_error = 1;
1345 max_req = 0;
1346 }
1347 else if (!reordered && req->offset <= highwater)
1348 highwater = req->offset + len;
1349 else if (!reordered && req->offset > highwater)
1350 reordered = 1;
1351 progress_counter += len;
1352 free(data);
1353
1354 if (len == req->len) {
1355 TAILQ_REMOVE(&requests, req, tq);
1356 free(req);
1357 num_req--;
1358 } else {
1359 /* Resend the request for the missing data */
1360 debug3("Short data block, re-requesting "
1361 "%llu -> %llu (%2d)",
1362 (unsigned long long)req->offset + len,
1363 (unsigned long long)req->offset +
1364 req->len - 1, num_req);
1365 req->id = conn->msg_id++;
1366 req->len -= len;
1367 req->offset += len;
1368 send_read_request(conn, req->id,
1369 req->offset, req->len, handle, handle_len);
1370 /* Reduce the request size */
1371 if (len < buflen)
1372 buflen = MAXIMUM(MIN_READ_SIZE, len);
1373 }
1374 if (max_req > 0) { /* max_req = 0 iff EOF received */
1375 if (size > 0 && offset > size) {
1376 /* Only one request at a time
1377 * after the expected EOF */
1378 debug3("Finish at %llu (%2d)",
1379 (unsigned long long)offset,
1380 num_req);
1381 max_req = 1;
1382 } else if (max_req <= conn->num_requests) {
1383 ++max_req;
1384 }
1385 }
1386 break;
1387 default:
1388 fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1389 SSH2_FXP_DATA, type);
1390 }
1391 }
1392
1393 if (showprogress && size)
1394 stop_progress_meter();
1395
1396 /* Sanity check */
1397 if (TAILQ_FIRST(&requests) != NULL)
1398 fatal("Transfer complete, but requests still in queue");
1399 /* Truncate at highest contiguous point to avoid holes on interrupt */
1400 if (read_error || write_error || interrupted) {
1401 if (reordered && resume_flag) {
1402 error("Unable to resume download of \"%s\": "
1403 "server reordered requests", local_path);
1404 }
1405 debug("truncating at %llu", (unsigned long long)highwater);
1406 if (ftruncate(local_fd, highwater) == -1)
1407 error("ftruncate \"%s\": %s", local_path,
1408 strerror(errno));
1409 }
1410 if (read_error) {
1411 error("Couldn't read from remote file \"%s\" : %s",
1412 remote_path, fx2txt(status));
1413 status = -1;
1414 do_close(conn, handle, handle_len);
1415 } else if (write_error) {
1416 error("Couldn't write to \"%s\": %s", local_path,
1417 strerror(write_errno));
1418 status = SSH2_FX_FAILURE;
1419 do_close(conn, handle, handle_len);
1420 } else {
1421 if (do_close(conn, handle, handle_len) != 0 || interrupted)
1422 status = SSH2_FX_FAILURE;
1423 else
1424 status = SSH2_FX_OK;
1425 /* Override umask and utimes if asked */
1426 #ifdef HAVE_FCHMOD
1427 if (preserve_flag && fchmod(local_fd, mode) == -1)
1428 #else
1429 if (preserve_flag && chmod(local_path, mode) == -1)
1430 #endif /* HAVE_FCHMOD */
1431 error("Couldn't set mode on \"%s\": %s", local_path,
1432 strerror(errno));
1433 if (preserve_flag &&
1434 (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1435 struct timeval tv[2];
1436 tv[0].tv_sec = a->atime;
1437 tv[1].tv_sec = a->mtime;
1438 tv[0].tv_usec = tv[1].tv_usec = 0;
1439 if (utimes(local_path, tv) == -1)
1440 error("Can't set times on \"%s\": %s",
1441 local_path, strerror(errno));
1442 }
1443 if (fsync_flag) {
1444 debug("syncing \"%s\"", local_path);
1445 if (fsync(local_fd) == -1)
1446 error("Couldn't sync file \"%s\": %s",
1447 local_path, strerror(errno));
1448 }
1449 }
1450 close(local_fd);
1451 sshbuf_free(msg);
1452 free(handle);
1453
1454 return status == SSH2_FX_OK ? 0 : -1;
1455 }
1456
1457 static int
download_dir_internal(struct sftp_conn * conn,const char * src,const char * dst,int depth,Attrib * dirattrib,int preserve_flag,int print_flag,int resume_flag,int fsync_flag)1458 download_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1459 int depth, Attrib *dirattrib, int preserve_flag, int print_flag,
1460 int resume_flag, int fsync_flag)
1461 {
1462 int i, ret = 0;
1463 SFTP_DIRENT **dir_entries;
1464 char *filename, *new_src = NULL, *new_dst = NULL;
1465 mode_t mode = 0777;
1466
1467 if (depth >= MAX_DIR_DEPTH) {
1468 error("Maximum directory depth exceeded: %d levels", depth);
1469 return -1;
1470 }
1471
1472 if (dirattrib == NULL &&
1473 (dirattrib = do_stat(conn, src, 1)) == NULL) {
1474 error("Unable to stat remote directory \"%s\"", src);
1475 return -1;
1476 }
1477 if (!S_ISDIR(dirattrib->perm)) {
1478 error("\"%s\" is not a directory", src);
1479 return -1;
1480 }
1481 if (print_flag)
1482 mprintf("Retrieving %s\n", src);
1483
1484 if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1485 mode = dirattrib->perm & 01777;
1486 else {
1487 debug("Server did not send permissions for "
1488 "directory \"%s\"", dst);
1489 }
1490
1491 if (mkdir(dst, mode) == -1 && errno != EEXIST) {
1492 error("mkdir %s: %s", dst, strerror(errno));
1493 return -1;
1494 }
1495
1496 if (do_readdir(conn, src, &dir_entries) == -1) {
1497 error("%s: Failed to get directory contents", src);
1498 return -1;
1499 }
1500
1501 for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1502 free(new_dst);
1503 free(new_src);
1504
1505 filename = dir_entries[i]->filename;
1506 new_dst = path_append(dst, filename);
1507 new_src = path_append(src, filename);
1508
1509 if (S_ISDIR(dir_entries[i]->a.perm)) {
1510 if (strcmp(filename, ".") == 0 ||
1511 strcmp(filename, "..") == 0)
1512 continue;
1513 if (download_dir_internal(conn, new_src, new_dst,
1514 depth + 1, &(dir_entries[i]->a), preserve_flag,
1515 print_flag, resume_flag, fsync_flag) == -1)
1516 ret = -1;
1517 } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1518 if (do_download(conn, new_src, new_dst,
1519 &(dir_entries[i]->a), preserve_flag,
1520 resume_flag, fsync_flag) == -1) {
1521 error("Download of file %s to %s failed",
1522 new_src, new_dst);
1523 ret = -1;
1524 }
1525 } else
1526 logit("%s: not a regular file\n", new_src);
1527
1528 }
1529 free(new_dst);
1530 free(new_src);
1531
1532 if (preserve_flag) {
1533 if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1534 struct timeval tv[2];
1535 tv[0].tv_sec = dirattrib->atime;
1536 tv[1].tv_sec = dirattrib->mtime;
1537 tv[0].tv_usec = tv[1].tv_usec = 0;
1538 if (utimes(dst, tv) == -1)
1539 error("Can't set times on \"%s\": %s",
1540 dst, strerror(errno));
1541 } else
1542 debug("Server did not send times for directory "
1543 "\"%s\"", dst);
1544 }
1545
1546 free_sftp_dirents(dir_entries);
1547
1548 return ret;
1549 }
1550
1551 int
download_dir(struct sftp_conn * conn,const char * src,const char * dst,Attrib * dirattrib,int preserve_flag,int print_flag,int resume_flag,int fsync_flag)1552 download_dir(struct sftp_conn *conn, const char *src, const char *dst,
1553 Attrib *dirattrib, int preserve_flag, int print_flag, int resume_flag,
1554 int fsync_flag)
1555 {
1556 char *src_canon;
1557 int ret;
1558
1559 if ((src_canon = do_realpath(conn, src)) == NULL) {
1560 error("Unable to canonicalize path \"%s\"", src);
1561 return -1;
1562 }
1563
1564 ret = download_dir_internal(conn, src_canon, dst, 0,
1565 dirattrib, preserve_flag, print_flag, resume_flag, fsync_flag);
1566 free(src_canon);
1567 return ret;
1568 }
1569
1570 int
do_upload(struct sftp_conn * conn,const char * local_path,const char * remote_path,int preserve_flag,int resume,int fsync_flag)1571 do_upload(struct sftp_conn *conn, const char *local_path,
1572 const char *remote_path, int preserve_flag, int resume, int fsync_flag)
1573 {
1574 int r, local_fd;
1575 u_int status = SSH2_FX_OK;
1576 u_int id;
1577 u_char type;
1578 off_t offset, progress_counter;
1579 u_char *handle, *data;
1580 struct sshbuf *msg;
1581 struct stat sb;
1582 Attrib a, *c = NULL;
1583 u_int32_t startid;
1584 u_int32_t ackid;
1585 struct outstanding_ack {
1586 u_int id;
1587 u_int len;
1588 off_t offset;
1589 TAILQ_ENTRY(outstanding_ack) tq;
1590 };
1591 TAILQ_HEAD(ackhead, outstanding_ack) acks;
1592 struct outstanding_ack *ack = NULL;
1593 size_t handle_len;
1594
1595 TAILQ_INIT(&acks);
1596
1597 if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1598 error("Couldn't open local file \"%s\" for reading: %s",
1599 local_path, strerror(errno));
1600 return(-1);
1601 }
1602 if (fstat(local_fd, &sb) == -1) {
1603 error("Couldn't fstat local file \"%s\": %s",
1604 local_path, strerror(errno));
1605 close(local_fd);
1606 return(-1);
1607 }
1608 if (!S_ISREG(sb.st_mode)) {
1609 error("%s is not a regular file", local_path);
1610 close(local_fd);
1611 return(-1);
1612 }
1613 stat_to_attrib(&sb, &a);
1614
1615 a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1616 a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1617 a.perm &= 0777;
1618 if (!preserve_flag)
1619 a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1620
1621 if (resume) {
1622 /* Get remote file size if it exists */
1623 if ((c = do_stat(conn, remote_path, 0)) == NULL) {
1624 close(local_fd);
1625 return -1;
1626 }
1627
1628 if ((off_t)c->size >= sb.st_size) {
1629 error("destination file bigger or same size as "
1630 "source file");
1631 close(local_fd);
1632 return -1;
1633 }
1634
1635 if (lseek(local_fd, (off_t)c->size, SEEK_SET) == -1) {
1636 close(local_fd);
1637 return -1;
1638 }
1639 }
1640
1641 if ((msg = sshbuf_new()) == NULL)
1642 fatal("%s: sshbuf_new failed", __func__);
1643
1644 /* Send open request */
1645 id = conn->msg_id++;
1646 if ((r = sshbuf_put_u8(msg, SSH2_FXP_OPEN)) != 0 ||
1647 (r = sshbuf_put_u32(msg, id)) != 0 ||
1648 (r = sshbuf_put_cstring(msg, remote_path)) != 0 ||
1649 (r = sshbuf_put_u32(msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|
1650 (resume ? SSH2_FXF_APPEND : SSH2_FXF_TRUNC))) != 0 ||
1651 (r = encode_attrib(msg, &a)) != 0)
1652 fatal("%s: buffer error: %s", __func__, ssh_err(r));
1653 send_msg(conn, msg);
1654 debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1655
1656 sshbuf_reset(msg);
1657
1658 handle = get_handle(conn, id, &handle_len,
1659 "remote open(\"%s\")", remote_path);
1660 if (handle == NULL) {
1661 close(local_fd);
1662 sshbuf_free(msg);
1663 return -1;
1664 }
1665
1666 startid = ackid = id + 1;
1667 data = xmalloc(conn->transfer_buflen);
1668
1669 /* Read from local and write to remote */
1670 offset = progress_counter = (resume ? c->size : 0);
1671 if (showprogress)
1672 start_progress_meter(local_path, sb.st_size,
1673 &progress_counter);
1674
1675 for (;;) {
1676 int len;
1677
1678 /*
1679 * Can't use atomicio here because it returns 0 on EOF,
1680 * thus losing the last block of the file.
1681 * Simulate an EOF on interrupt, allowing ACKs from the
1682 * server to drain.
1683 */
1684 if (interrupted || status != SSH2_FX_OK)
1685 len = 0;
1686 else do
1687 len = read(local_fd, data, conn->transfer_buflen);
1688 while ((len == -1) &&
1689 (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
1690
1691 if (len == -1)
1692 fatal("Couldn't read from \"%s\": %s", local_path,
1693 strerror(errno));
1694
1695 if (len != 0) {
1696 ack = xcalloc(1, sizeof(*ack));
1697 ack->id = ++id;
1698 ack->offset = offset;
1699 ack->len = len;
1700 TAILQ_INSERT_TAIL(&acks, ack, tq);
1701
1702 sshbuf_reset(msg);
1703 if ((r = sshbuf_put_u8(msg, SSH2_FXP_WRITE)) != 0 ||
1704 (r = sshbuf_put_u32(msg, ack->id)) != 0 ||
1705 (r = sshbuf_put_string(msg, handle,
1706 handle_len)) != 0 ||
1707 (r = sshbuf_put_u64(msg, offset)) != 0 ||
1708 (r = sshbuf_put_string(msg, data, len)) != 0)
1709 fatal("%s: buffer error: %s",
1710 __func__, ssh_err(r));
1711 send_msg(conn, msg);
1712 debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1713 id, (unsigned long long)offset, len);
1714 } else if (TAILQ_FIRST(&acks) == NULL)
1715 break;
1716
1717 if (ack == NULL)
1718 fatal("Unexpected ACK %u", id);
1719
1720 if (id == startid || len == 0 ||
1721 id - ackid >= conn->num_requests) {
1722 u_int rid;
1723
1724 sshbuf_reset(msg);
1725 get_msg(conn, msg);
1726 if ((r = sshbuf_get_u8(msg, &type)) != 0 ||
1727 (r = sshbuf_get_u32(msg, &rid)) != 0)
1728 fatal("%s: buffer error: %s",
1729 __func__, ssh_err(r));
1730
1731 if (type != SSH2_FXP_STATUS)
1732 fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1733 "got %d", SSH2_FXP_STATUS, type);
1734
1735 if ((r = sshbuf_get_u32(msg, &status)) != 0)
1736 fatal("%s: buffer error: %s",
1737 __func__, ssh_err(r));
1738 debug3("SSH2_FXP_STATUS %u", status);
1739
1740 /* Find the request in our queue */
1741 for (ack = TAILQ_FIRST(&acks);
1742 ack != NULL && ack->id != rid;
1743 ack = TAILQ_NEXT(ack, tq))
1744 ;
1745 if (ack == NULL)
1746 fatal("Can't find request for ID %u", rid);
1747 TAILQ_REMOVE(&acks, ack, tq);
1748 debug3("In write loop, ack for %u %u bytes at %lld",
1749 ack->id, ack->len, (long long)ack->offset);
1750 ++ackid;
1751 progress_counter += ack->len;
1752 free(ack);
1753 }
1754 offset += len;
1755 if (offset < 0)
1756 fatal("%s: offset < 0", __func__);
1757 }
1758 sshbuf_free(msg);
1759
1760 if (showprogress)
1761 stop_progress_meter();
1762 free(data);
1763
1764 if (status != SSH2_FX_OK) {
1765 error("Couldn't write to remote file \"%s\": %s",
1766 remote_path, fx2txt(status));
1767 status = SSH2_FX_FAILURE;
1768 }
1769
1770 if (close(local_fd) == -1) {
1771 error("Couldn't close local file \"%s\": %s", local_path,
1772 strerror(errno));
1773 status = SSH2_FX_FAILURE;
1774 }
1775
1776 /* Override umask and utimes if asked */
1777 if (preserve_flag)
1778 do_fsetstat(conn, handle, handle_len, &a);
1779
1780 if (fsync_flag)
1781 (void)do_fsync(conn, handle, handle_len);
1782
1783 if (do_close(conn, handle, handle_len) != 0)
1784 status = SSH2_FX_FAILURE;
1785
1786 free(handle);
1787
1788 return status == SSH2_FX_OK ? 0 : -1;
1789 }
1790
1791 static int
upload_dir_internal(struct sftp_conn * conn,const char * src,const char * dst,int depth,int preserve_flag,int print_flag,int resume,int fsync_flag)1792 upload_dir_internal(struct sftp_conn *conn, const char *src, const char *dst,
1793 int depth, int preserve_flag, int print_flag, int resume, int fsync_flag)
1794 {
1795 int ret = 0;
1796 DIR *dirp;
1797 struct dirent *dp;
1798 char *filename, *new_src = NULL, *new_dst = NULL;
1799 struct stat sb;
1800 Attrib a, *dirattrib;
1801
1802 if (depth >= MAX_DIR_DEPTH) {
1803 error("Maximum directory depth exceeded: %d levels", depth);
1804 return -1;
1805 }
1806
1807 if (stat(src, &sb) == -1) {
1808 error("Couldn't stat directory \"%s\": %s",
1809 src, strerror(errno));
1810 return -1;
1811 }
1812 if (!S_ISDIR(sb.st_mode)) {
1813 error("\"%s\" is not a directory", src);
1814 return -1;
1815 }
1816 if (print_flag)
1817 mprintf("Entering %s\n", src);
1818
1819 attrib_clear(&a);
1820 stat_to_attrib(&sb, &a);
1821 a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1822 a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1823 a.perm &= 01777;
1824 if (!preserve_flag)
1825 a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1826
1827 /*
1828 * sftp lacks a portable status value to match errno EEXIST,
1829 * so if we get a failure back then we must check whether
1830 * the path already existed and is a directory.
1831 */
1832 if (do_mkdir(conn, dst, &a, 0) != 0) {
1833 if ((dirattrib = do_stat(conn, dst, 0)) == NULL)
1834 return -1;
1835 if (!S_ISDIR(dirattrib->perm)) {
1836 error("\"%s\" exists but is not a directory", dst);
1837 return -1;
1838 }
1839 }
1840
1841 if ((dirp = opendir(src)) == NULL) {
1842 error("Failed to open dir \"%s\": %s", src, strerror(errno));
1843 return -1;
1844 }
1845
1846 while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1847 if (dp->d_ino == 0)
1848 continue;
1849 free(new_dst);
1850 free(new_src);
1851 filename = dp->d_name;
1852 new_dst = path_append(dst, filename);
1853 new_src = path_append(src, filename);
1854
1855 if (lstat(new_src, &sb) == -1) {
1856 logit("%s: lstat failed: %s", filename,
1857 strerror(errno));
1858 ret = -1;
1859 } else if (S_ISDIR(sb.st_mode)) {
1860 if (strcmp(filename, ".") == 0 ||
1861 strcmp(filename, "..") == 0)
1862 continue;
1863
1864 if (upload_dir_internal(conn, new_src, new_dst,
1865 depth + 1, preserve_flag, print_flag, resume,
1866 fsync_flag) == -1)
1867 ret = -1;
1868 } else if (S_ISREG(sb.st_mode)) {
1869 if (do_upload(conn, new_src, new_dst,
1870 preserve_flag, resume, fsync_flag) == -1) {
1871 error("Uploading of file %s to %s failed!",
1872 new_src, new_dst);
1873 ret = -1;
1874 }
1875 } else
1876 logit("%s: not a regular file\n", filename);
1877 }
1878 free(new_dst);
1879 free(new_src);
1880
1881 do_setstat(conn, dst, &a);
1882
1883 (void) closedir(dirp);
1884 return ret;
1885 }
1886
1887 int
upload_dir(struct sftp_conn * conn,const char * src,const char * dst,int preserve_flag,int print_flag,int resume,int fsync_flag)1888 upload_dir(struct sftp_conn *conn, const char *src, const char *dst,
1889 int preserve_flag, int print_flag, int resume, int fsync_flag)
1890 {
1891 char *dst_canon;
1892 int ret;
1893
1894 if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1895 error("Unable to canonicalize path \"%s\"", dst);
1896 return -1;
1897 }
1898
1899 ret = upload_dir_internal(conn, src, dst_canon, 0, preserve_flag,
1900 print_flag, resume, fsync_flag);
1901
1902 free(dst_canon);
1903 return ret;
1904 }
1905
1906 char *
path_append(const char * p1,const char * p2)1907 path_append(const char *p1, const char *p2)
1908 {
1909 char *ret;
1910 size_t len = strlen(p1) + strlen(p2) + 2;
1911
1912 ret = xmalloc(len);
1913 strlcpy(ret, p1, len);
1914 if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1915 strlcat(ret, "/", len);
1916 strlcat(ret, p2, len);
1917
1918 return(ret);
1919 }
1920
1921