Annotation of src/usr.bin/ssh/sftp-client.c, Revision 1.88
1.88 ! djm 1: /* $OpenBSD: sftp-client.c,v 1.87 2009/06/22 05:39:28 dtucker Exp $ */
1.1 djm 2: /*
1.46 djm 3: * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
1.1 djm 4: *
1.46 djm 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.
1.1 djm 8: *
1.46 djm 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.
1.1 djm 16: */
17:
18: /* XXX: memleaks */
19: /* XXX: signed vs unsigned */
1.23 djm 20: /* XXX: remove all logging, only return status codes */
1.1 djm 21: /* XXX: copy between two remote sites */
22:
1.74 deraadt 23: #include <sys/types.h>
1.21 djm 24: #include <sys/queue.h>
1.60 stevesk 25: #include <sys/stat.h>
1.71 stevesk 26: #include <sys/time.h>
1.72 stevesk 27: #include <sys/param.h>
1.82 djm 28: #include <sys/statvfs.h>
1.74 deraadt 29: #include <sys/uio.h>
1.66 stevesk 30:
1.67 stevesk 31: #include <errno.h>
1.66 stevesk 32: #include <fcntl.h>
1.70 stevesk 33: #include <signal.h>
1.87 dtucker 34: #include <stdarg.h>
1.73 stevesk 35: #include <stdio.h>
1.69 stevesk 36: #include <string.h>
1.68 stevesk 37: #include <unistd.h>
1.1 djm 38:
1.74 deraadt 39: #include "xmalloc.h"
1.1 djm 40: #include "buffer.h"
41: #include "log.h"
42: #include "atomicio.h"
1.39 fgsch 43: #include "progressmeter.h"
1.64 djm 44: #include "misc.h"
1.1 djm 45:
46: #include "sftp.h"
47: #include "sftp-common.h"
48: #include "sftp-client.h"
49:
1.49 djm 50: extern volatile sig_atomic_t interrupted;
1.39 fgsch 51: extern int showprogress;
52:
1.59 david 53: /* Minimum amount of data to read at a time */
1.21 djm 54: #define MIN_READ_SIZE 512
55:
1.23 djm 56: struct sftp_conn {
57: int fd_in;
58: int fd_out;
59: u_int transfer_buflen;
60: u_int num_requests;
61: u_int version;
62: u_int msg_id;
1.82 djm 63: #define SFTP_EXT_POSIX_RENAME 0x00000001
64: #define SFTP_EXT_STATVFS 0x00000002
65: #define SFTP_EXT_FSTATVFS 0x00000004
1.81 djm 66: u_int exts;
1.23 djm 67: };
1.4 djm 68:
1.88 ! djm 69: static char *
! 70: get_handle(int fd, u_int expected_id, u_int *len, const char *errfmt, ...)
! 71: __attribute__((format(printf, 4, 5)));
! 72:
1.17 itojun 73: static void
1.1 djm 74: send_msg(int fd, Buffer *m)
75: {
1.40 djm 76: u_char mlen[4];
1.65 djm 77: struct iovec iov[2];
1.40 djm 78:
1.58 djm 79: if (buffer_len(m) > SFTP_MAX_MSG_LENGTH)
1.40 djm 80: fatal("Outbound message too long %u", buffer_len(m));
81:
82: /* Send length first */
1.64 djm 83: put_u32(mlen, buffer_len(m));
1.65 djm 84: iov[0].iov_base = mlen;
85: iov[0].iov_len = sizeof(mlen);
86: iov[1].iov_base = buffer_ptr(m);
87: iov[1].iov_len = buffer_len(m);
1.74 deraadt 88:
1.65 djm 89: if (atomiciov(writev, fd, iov, 2) != buffer_len(m) + sizeof(mlen))
1.1 djm 90: fatal("Couldn't send packet: %s", strerror(errno));
91:
1.40 djm 92: buffer_clear(m);
1.1 djm 93: }
94:
1.17 itojun 95: static void
1.1 djm 96: get_msg(int fd, Buffer *m)
97: {
1.40 djm 98: u_int msg_len;
1.1 djm 99:
1.40 djm 100: buffer_append_space(m, 4);
1.54 avsm 101: if (atomicio(read, fd, buffer_ptr(m), 4) != 4) {
102: if (errno == EPIPE)
103: fatal("Connection closed");
104: else
105: fatal("Couldn't read packet: %s", strerror(errno));
106: }
1.1 djm 107:
1.40 djm 108: msg_len = buffer_get_int(m);
1.58 djm 109: if (msg_len > SFTP_MAX_MSG_LENGTH)
1.33 deraadt 110: fatal("Received message too long %u", msg_len);
1.1 djm 111:
1.40 djm 112: buffer_append_space(m, msg_len);
1.54 avsm 113: if (atomicio(read, fd, buffer_ptr(m), msg_len) != msg_len) {
114: if (errno == EPIPE)
115: fatal("Connection closed");
116: else
117: fatal("Read packet: %s", strerror(errno));
118: }
1.1 djm 119: }
120:
1.17 itojun 121: static void
1.1 djm 122: send_string_request(int fd, u_int id, u_int code, char *s,
123: u_int len)
124: {
125: Buffer msg;
126:
127: buffer_init(&msg);
128: buffer_put_char(&msg, code);
129: buffer_put_int(&msg, id);
130: buffer_put_string(&msg, s, len);
131: send_msg(fd, &msg);
1.33 deraadt 132: debug3("Sent message fd %d T:%u I:%u", fd, code, id);
1.1 djm 133: buffer_free(&msg);
134: }
135:
1.17 itojun 136: static void
1.1 djm 137: send_string_attrs_request(int fd, u_int id, u_int code, char *s,
138: u_int len, Attrib *a)
139: {
140: Buffer msg;
141:
142: buffer_init(&msg);
143: buffer_put_char(&msg, code);
144: buffer_put_int(&msg, id);
145: buffer_put_string(&msg, s, len);
146: encode_attrib(&msg, a);
147: send_msg(fd, &msg);
1.33 deraadt 148: debug3("Sent message fd %d T:%u I:%u", fd, code, id);
1.1 djm 149: buffer_free(&msg);
150: }
151:
1.17 itojun 152: static u_int
1.33 deraadt 153: get_status(int fd, u_int expected_id)
1.1 djm 154: {
155: Buffer msg;
156: u_int type, id, status;
157:
158: buffer_init(&msg);
159: get_msg(fd, &msg);
160: type = buffer_get_char(&msg);
161: id = buffer_get_int(&msg);
162:
163: if (id != expected_id)
1.33 deraadt 164: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 165: if (type != SSH2_FXP_STATUS)
1.33 deraadt 166: fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
1.1 djm 167: SSH2_FXP_STATUS, type);
168:
169: status = buffer_get_int(&msg);
170: buffer_free(&msg);
171:
1.33 deraadt 172: debug3("SSH2_FXP_STATUS %u", status);
1.1 djm 173:
174: return(status);
175: }
176:
1.17 itojun 177: static char *
1.88 ! djm 178: get_handle(int fd, u_int expected_id, u_int *len, const char *errfmt, ...)
1.1 djm 179: {
180: Buffer msg;
181: u_int type, id;
1.88 ! djm 182: char *handle, errmsg[256];
! 183: va_list args;
! 184: int status;
! 185:
! 186: va_start(args, errfmt);
! 187: if (errfmt != NULL)
! 188: vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
! 189: va_end(args);
1.1 djm 190:
191: buffer_init(&msg);
192: get_msg(fd, &msg);
193: type = buffer_get_char(&msg);
194: id = buffer_get_int(&msg);
195:
196: if (id != expected_id)
1.88 ! djm 197: fatal("%s: ID mismatch (%u != %u)",
! 198: errfmt == NULL ? __func__ : errmsg, id, expected_id);
1.1 djm 199: if (type == SSH2_FXP_STATUS) {
1.88 ! djm 200: status = buffer_get_int(&msg);
! 201: if (errfmt != NULL)
! 202: error("%s: %s", errmsg, fx2txt(status));
1.52 markus 203: buffer_free(&msg);
1.1 djm 204: return(NULL);
205: } else if (type != SSH2_FXP_HANDLE)
1.88 ! djm 206: fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
! 207: errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
1.1 djm 208:
209: handle = buffer_get_string(&msg, len);
210: buffer_free(&msg);
211:
212: return(handle);
213: }
214:
1.17 itojun 215: static Attrib *
1.14 djm 216: get_decode_stat(int fd, u_int expected_id, int quiet)
1.1 djm 217: {
218: Buffer msg;
219: u_int type, id;
220: Attrib *a;
221:
222: buffer_init(&msg);
223: get_msg(fd, &msg);
224:
225: type = buffer_get_char(&msg);
226: id = buffer_get_int(&msg);
227:
1.33 deraadt 228: debug3("Received stat reply T:%u I:%u", type, id);
1.1 djm 229: if (id != expected_id)
1.33 deraadt 230: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 231: if (type == SSH2_FXP_STATUS) {
232: int status = buffer_get_int(&msg);
233:
1.14 djm 234: if (quiet)
235: debug("Couldn't stat remote file: %s", fx2txt(status));
236: else
237: error("Couldn't stat remote file: %s", fx2txt(status));
1.52 markus 238: buffer_free(&msg);
1.1 djm 239: return(NULL);
240: } else if (type != SSH2_FXP_ATTRS) {
1.33 deraadt 241: fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
1.1 djm 242: SSH2_FXP_ATTRS, type);
243: }
244: a = decode_attrib(&msg);
245: buffer_free(&msg);
246:
247: return(a);
248: }
249:
1.82 djm 250: static int
1.84 dtucker 251: get_decode_statvfs(int fd, struct sftp_statvfs *st, u_int expected_id,
252: int quiet)
1.82 djm 253: {
254: Buffer msg;
255: u_int type, id, flag;
256:
257: buffer_init(&msg);
258: get_msg(fd, &msg);
259:
260: type = buffer_get_char(&msg);
261: id = buffer_get_int(&msg);
262:
263: debug3("Received statvfs reply T:%u I:%u", type, id);
264: if (id != expected_id)
265: fatal("ID mismatch (%u != %u)", id, expected_id);
266: if (type == SSH2_FXP_STATUS) {
267: int status = buffer_get_int(&msg);
268:
269: if (quiet)
270: debug("Couldn't statvfs: %s", fx2txt(status));
271: else
272: error("Couldn't statvfs: %s", fx2txt(status));
273: buffer_free(&msg);
274: return -1;
275: } else if (type != SSH2_FXP_EXTENDED_REPLY) {
276: fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
277: SSH2_FXP_EXTENDED_REPLY, type);
278: }
279:
280: bzero(st, sizeof(*st));
1.84 dtucker 281: st->f_bsize = buffer_get_int64(&msg);
282: st->f_frsize = buffer_get_int64(&msg);
1.82 djm 283: st->f_blocks = buffer_get_int64(&msg);
284: st->f_bfree = buffer_get_int64(&msg);
285: st->f_bavail = buffer_get_int64(&msg);
286: st->f_files = buffer_get_int64(&msg);
287: st->f_ffree = buffer_get_int64(&msg);
288: st->f_favail = buffer_get_int64(&msg);
1.83 djm 289: st->f_fsid = buffer_get_int64(&msg);
1.84 dtucker 290: flag = buffer_get_int64(&msg);
291: st->f_namemax = buffer_get_int64(&msg);
1.82 djm 292:
293: st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
294: st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
295:
296: buffer_free(&msg);
297:
298: return 0;
299: }
300:
1.23 djm 301: struct sftp_conn *
302: do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests)
1.1 djm 303: {
1.81 djm 304: u_int type, exts = 0;
1.33 deraadt 305: int version;
1.1 djm 306: Buffer msg;
1.23 djm 307: struct sftp_conn *ret;
1.1 djm 308:
309: buffer_init(&msg);
310: buffer_put_char(&msg, SSH2_FXP_INIT);
311: buffer_put_int(&msg, SSH2_FILEXFER_VERSION);
312: send_msg(fd_out, &msg);
313:
314: buffer_clear(&msg);
315:
316: get_msg(fd_in, &msg);
317:
1.3 stevesk 318: /* Expecting a VERSION reply */
1.1 djm 319: if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) {
1.33 deraadt 320: error("Invalid packet back from SSH2_FXP_INIT (type %u)",
1.1 djm 321: type);
322: buffer_free(&msg);
1.23 djm 323: return(NULL);
1.1 djm 324: }
325: version = buffer_get_int(&msg);
326:
327: debug2("Remote version: %d", version);
328:
329: /* Check for extensions */
330: while (buffer_len(&msg) > 0) {
331: char *name = buffer_get_string(&msg, NULL);
332: char *value = buffer_get_string(&msg, NULL);
1.85 djm 333: int known = 0;
1.1 djm 334:
1.82 djm 335: if (strcmp(name, "posix-rename@openssh.com") == 0 &&
1.85 djm 336: strcmp(value, "1") == 0) {
1.81 djm 337: exts |= SFTP_EXT_POSIX_RENAME;
1.85 djm 338: known = 1;
339: } else if (strcmp(name, "statvfs@openssh.com") == 0 &&
340: strcmp(value, "2") == 0) {
1.82 djm 341: exts |= SFTP_EXT_STATVFS;
1.85 djm 342: known = 1;
343: } if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
344: strcmp(value, "2") == 0) {
1.82 djm 345: exts |= SFTP_EXT_FSTATVFS;
1.85 djm 346: known = 1;
347: }
348: if (known) {
349: debug2("Server supports extension \"%s\" revision %s",
350: name, value);
351: } else {
352: debug2("Unrecognised server extension \"%s\"", name);
353: }
1.1 djm 354: xfree(name);
355: xfree(value);
356: }
357:
358: buffer_free(&msg);
1.11 djm 359:
1.23 djm 360: ret = xmalloc(sizeof(*ret));
361: ret->fd_in = fd_in;
362: ret->fd_out = fd_out;
363: ret->transfer_buflen = transfer_buflen;
364: ret->num_requests = num_requests;
365: ret->version = version;
366: ret->msg_id = 1;
1.81 djm 367: ret->exts = exts;
1.23 djm 368:
369: /* Some filexfer v.0 servers don't support large packets */
370: if (version == 0)
1.29 markus 371: ret->transfer_buflen = MIN(ret->transfer_buflen, 20480);
1.23 djm 372:
373: return(ret);
374: }
375:
376: u_int
377: sftp_proto_version(struct sftp_conn *conn)
378: {
379: return(conn->version);
1.1 djm 380: }
381:
382: int
1.23 djm 383: do_close(struct sftp_conn *conn, char *handle, u_int handle_len)
1.1 djm 384: {
385: u_int id, status;
386: Buffer msg;
387:
388: buffer_init(&msg);
389:
1.23 djm 390: id = conn->msg_id++;
1.1 djm 391: buffer_put_char(&msg, SSH2_FXP_CLOSE);
392: buffer_put_int(&msg, id);
393: buffer_put_string(&msg, handle, handle_len);
1.23 djm 394: send_msg(conn->fd_out, &msg);
1.33 deraadt 395: debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
1.1 djm 396:
1.23 djm 397: status = get_status(conn->fd_in, id);
1.1 djm 398: if (status != SSH2_FX_OK)
399: error("Couldn't close file: %s", fx2txt(status));
400:
401: buffer_free(&msg);
402:
403: return(status);
404: }
405:
1.12 djm 406:
1.17 itojun 407: static int
1.23 djm 408: do_lsreaddir(struct sftp_conn *conn, char *path, int printflag,
1.12 djm 409: SFTP_DIRENT ***dir)
1.1 djm 410: {
411: Buffer msg;
1.55 djm 412: u_int count, type, id, handle_len, i, expected_id, ents = 0;
1.1 djm 413: char *handle;
414:
1.23 djm 415: id = conn->msg_id++;
1.1 djm 416:
417: buffer_init(&msg);
418: buffer_put_char(&msg, SSH2_FXP_OPENDIR);
419: buffer_put_int(&msg, id);
420: buffer_put_cstring(&msg, path);
1.23 djm 421: send_msg(conn->fd_out, &msg);
1.1 djm 422:
423: buffer_clear(&msg);
424:
1.88 ! djm 425: handle = get_handle(conn->fd_in, id, &handle_len,
! 426: "remote readdir(\"%s\")", path);
1.1 djm 427: if (handle == NULL)
428: return(-1);
429:
1.12 djm 430: if (dir) {
431: ents = 0;
432: *dir = xmalloc(sizeof(**dir));
433: (*dir)[0] = NULL;
434: }
435:
1.49 djm 436: for (; !interrupted;) {
1.23 djm 437: id = expected_id = conn->msg_id++;
1.1 djm 438:
1.33 deraadt 439: debug3("Sending SSH2_FXP_READDIR I:%u", id);
1.1 djm 440:
441: buffer_clear(&msg);
442: buffer_put_char(&msg, SSH2_FXP_READDIR);
443: buffer_put_int(&msg, id);
444: buffer_put_string(&msg, handle, handle_len);
1.23 djm 445: send_msg(conn->fd_out, &msg);
1.1 djm 446:
447: buffer_clear(&msg);
448:
1.23 djm 449: get_msg(conn->fd_in, &msg);
1.1 djm 450:
451: type = buffer_get_char(&msg);
452: id = buffer_get_int(&msg);
453:
1.33 deraadt 454: debug3("Received reply T:%u I:%u", type, id);
1.1 djm 455:
456: if (id != expected_id)
1.33 deraadt 457: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 458:
459: if (type == SSH2_FXP_STATUS) {
460: int status = buffer_get_int(&msg);
461:
462: debug3("Received SSH2_FXP_STATUS %d", status);
463:
464: if (status == SSH2_FX_EOF) {
465: break;
466: } else {
467: error("Couldn't read directory: %s",
468: fx2txt(status));
1.23 djm 469: do_close(conn, handle, handle_len);
1.42 markus 470: xfree(handle);
1.9 djm 471: return(status);
1.1 djm 472: }
473: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 474: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 475: SSH2_FXP_NAME, type);
476:
477: count = buffer_get_int(&msg);
1.7 markus 478: if (count == 0)
479: break;
1.8 stevesk 480: debug3("Received %d SSH2_FXP_NAME responses", count);
1.19 deraadt 481: for (i = 0; i < count; i++) {
1.1 djm 482: char *filename, *longname;
483: Attrib *a;
484:
485: filename = buffer_get_string(&msg, NULL);
486: longname = buffer_get_string(&msg, NULL);
487: a = decode_attrib(&msg);
488:
1.12 djm 489: if (printflag)
490: printf("%s\n", longname);
491:
492: if (dir) {
1.62 djm 493: *dir = xrealloc(*dir, ents + 2, sizeof(**dir));
1.12 djm 494: (*dir)[ents] = xmalloc(sizeof(***dir));
495: (*dir)[ents]->filename = xstrdup(filename);
496: (*dir)[ents]->longname = xstrdup(longname);
497: memcpy(&(*dir)[ents]->a, a, sizeof(*a));
498: (*dir)[++ents] = NULL;
499: }
1.1 djm 500:
501: xfree(filename);
502: xfree(longname);
503: }
504: }
505:
506: buffer_free(&msg);
1.23 djm 507: do_close(conn, handle, handle_len);
1.1 djm 508: xfree(handle);
509:
1.49 djm 510: /* Don't return partial matches on interrupt */
511: if (interrupted && dir != NULL && *dir != NULL) {
512: free_sftp_dirents(*dir);
513: *dir = xmalloc(sizeof(**dir));
514: **dir = NULL;
515: }
516:
1.1 djm 517: return(0);
1.12 djm 518: }
519:
520: int
1.23 djm 521: do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir)
1.12 djm 522: {
1.23 djm 523: return(do_lsreaddir(conn, path, 0, dir));
1.12 djm 524: }
525:
526: void free_sftp_dirents(SFTP_DIRENT **s)
527: {
528: int i;
1.19 deraadt 529:
530: for (i = 0; s[i]; i++) {
1.12 djm 531: xfree(s[i]->filename);
532: xfree(s[i]->longname);
533: xfree(s[i]);
534: }
535: xfree(s);
536: }
537:
538: int
1.23 djm 539: do_rm(struct sftp_conn *conn, char *path)
1.1 djm 540: {
541: u_int status, id;
542:
543: debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
544:
1.23 djm 545: id = conn->msg_id++;
1.28 markus 546: send_string_request(conn->fd_out, id, SSH2_FXP_REMOVE, path,
1.23 djm 547: strlen(path));
548: status = get_status(conn->fd_in, id);
1.1 djm 549: if (status != SSH2_FX_OK)
550: error("Couldn't delete file: %s", fx2txt(status));
551: return(status);
552: }
553:
554: int
1.23 djm 555: do_mkdir(struct sftp_conn *conn, char *path, Attrib *a)
1.1 djm 556: {
557: u_int status, id;
558:
1.23 djm 559: id = conn->msg_id++;
560: send_string_attrs_request(conn->fd_out, id, SSH2_FXP_MKDIR, path,
1.1 djm 561: strlen(path), a);
562:
1.23 djm 563: status = get_status(conn->fd_in, id);
1.1 djm 564: if (status != SSH2_FX_OK)
565: error("Couldn't create directory: %s", fx2txt(status));
566:
567: return(status);
568: }
569:
570: int
1.23 djm 571: do_rmdir(struct sftp_conn *conn, char *path)
1.1 djm 572: {
573: u_int status, id;
574:
1.23 djm 575: id = conn->msg_id++;
576: send_string_request(conn->fd_out, id, SSH2_FXP_RMDIR, path,
577: strlen(path));
1.1 djm 578:
1.23 djm 579: status = get_status(conn->fd_in, id);
1.1 djm 580: if (status != SSH2_FX_OK)
581: error("Couldn't remove directory: %s", fx2txt(status));
582:
583: return(status);
584: }
585:
586: Attrib *
1.23 djm 587: do_stat(struct sftp_conn *conn, char *path, int quiet)
1.1 djm 588: {
589: u_int id;
590:
1.23 djm 591: id = conn->msg_id++;
592:
1.28 markus 593: send_string_request(conn->fd_out, id,
594: conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
1.23 djm 595: path, strlen(path));
596:
597: return(get_decode_stat(conn->fd_in, id, quiet));
1.1 djm 598: }
599:
600: Attrib *
1.23 djm 601: do_lstat(struct sftp_conn *conn, char *path, int quiet)
1.1 djm 602: {
603: u_int id;
604:
1.23 djm 605: if (conn->version == 0) {
606: if (quiet)
607: debug("Server version does not support lstat operation");
608: else
1.43 itojun 609: logit("Server version does not support lstat operation");
1.30 markus 610: return(do_stat(conn, path, quiet));
1.23 djm 611: }
612:
613: id = conn->msg_id++;
614: send_string_request(conn->fd_out, id, SSH2_FXP_LSTAT, path,
615: strlen(path));
616:
617: return(get_decode_stat(conn->fd_in, id, quiet));
1.1 djm 618: }
619:
1.78 chl 620: #ifdef notyet
1.1 djm 621: Attrib *
1.23 djm 622: do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet)
1.1 djm 623: {
624: u_int id;
625:
1.23 djm 626: id = conn->msg_id++;
627: send_string_request(conn->fd_out, id, SSH2_FXP_FSTAT, handle,
628: handle_len);
629:
630: return(get_decode_stat(conn->fd_in, id, quiet));
1.1 djm 631: }
1.78 chl 632: #endif
1.1 djm 633:
634: int
1.23 djm 635: do_setstat(struct sftp_conn *conn, char *path, Attrib *a)
1.1 djm 636: {
637: u_int status, id;
638:
1.23 djm 639: id = conn->msg_id++;
640: send_string_attrs_request(conn->fd_out, id, SSH2_FXP_SETSTAT, path,
1.1 djm 641: strlen(path), a);
642:
1.23 djm 643: status = get_status(conn->fd_in, id);
1.1 djm 644: if (status != SSH2_FX_OK)
645: error("Couldn't setstat on \"%s\": %s", path,
646: fx2txt(status));
647:
648: return(status);
649: }
650:
651: int
1.23 djm 652: do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len,
1.1 djm 653: Attrib *a)
654: {
655: u_int status, id;
656:
1.23 djm 657: id = conn->msg_id++;
658: send_string_attrs_request(conn->fd_out, id, SSH2_FXP_FSETSTAT, handle,
1.1 djm 659: handle_len, a);
660:
1.23 djm 661: status = get_status(conn->fd_in, id);
1.1 djm 662: if (status != SSH2_FX_OK)
663: error("Couldn't fsetstat: %s", fx2txt(status));
664:
665: return(status);
666: }
667:
668: char *
1.23 djm 669: do_realpath(struct sftp_conn *conn, char *path)
1.1 djm 670: {
671: Buffer msg;
672: u_int type, expected_id, count, id;
673: char *filename, *longname;
674: Attrib *a;
675:
1.23 djm 676: expected_id = id = conn->msg_id++;
677: send_string_request(conn->fd_out, id, SSH2_FXP_REALPATH, path,
678: strlen(path));
1.1 djm 679:
680: buffer_init(&msg);
681:
1.23 djm 682: get_msg(conn->fd_in, &msg);
1.1 djm 683: type = buffer_get_char(&msg);
684: id = buffer_get_int(&msg);
685:
686: if (id != expected_id)
1.33 deraadt 687: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 688:
689: if (type == SSH2_FXP_STATUS) {
690: u_int status = buffer_get_int(&msg);
691:
692: error("Couldn't canonicalise: %s", fx2txt(status));
693: return(NULL);
694: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 695: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 696: SSH2_FXP_NAME, type);
697:
698: count = buffer_get_int(&msg);
699: if (count != 1)
700: fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
701:
702: filename = buffer_get_string(&msg, NULL);
703: longname = buffer_get_string(&msg, NULL);
704: a = decode_attrib(&msg);
705:
706: debug3("SSH_FXP_REALPATH %s -> %s", path, filename);
707:
708: xfree(longname);
709:
710: buffer_free(&msg);
711:
712: return(filename);
713: }
714:
715: int
1.23 djm 716: do_rename(struct sftp_conn *conn, char *oldpath, char *newpath)
1.1 djm 717: {
718: Buffer msg;
719: u_int status, id;
720:
721: buffer_init(&msg);
722:
723: /* Send rename request */
1.23 djm 724: id = conn->msg_id++;
1.81 djm 725: if ((conn->exts & SFTP_EXT_POSIX_RENAME)) {
726: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
727: buffer_put_int(&msg, id);
728: buffer_put_cstring(&msg, "posix-rename@openssh.com");
729: } else {
730: buffer_put_char(&msg, SSH2_FXP_RENAME);
731: buffer_put_int(&msg, id);
732: }
1.1 djm 733: buffer_put_cstring(&msg, oldpath);
734: buffer_put_cstring(&msg, newpath);
1.23 djm 735: send_msg(conn->fd_out, &msg);
1.81 djm 736: debug3("Sent message %s \"%s\" -> \"%s\"",
737: (conn->exts & SFTP_EXT_POSIX_RENAME) ? "posix-rename@openssh.com" :
738: "SSH2_FXP_RENAME", oldpath, newpath);
1.1 djm 739: buffer_free(&msg);
740:
1.23 djm 741: status = get_status(conn->fd_in, id);
1.1 djm 742: if (status != SSH2_FX_OK)
1.23 djm 743: error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
744: newpath, fx2txt(status));
1.1 djm 745:
746: return(status);
1.11 djm 747: }
748:
749: int
1.23 djm 750: do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath)
1.11 djm 751: {
752: Buffer msg;
753: u_int status, id;
754:
1.23 djm 755: if (conn->version < 3) {
756: error("This server does not support the symlink operation");
757: return(SSH2_FX_OP_UNSUPPORTED);
758: }
759:
1.11 djm 760: buffer_init(&msg);
761:
1.48 djm 762: /* Send symlink request */
1.23 djm 763: id = conn->msg_id++;
1.11 djm 764: buffer_put_char(&msg, SSH2_FXP_SYMLINK);
765: buffer_put_int(&msg, id);
766: buffer_put_cstring(&msg, oldpath);
767: buffer_put_cstring(&msg, newpath);
1.23 djm 768: send_msg(conn->fd_out, &msg);
1.11 djm 769: debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
770: newpath);
771: buffer_free(&msg);
772:
1.23 djm 773: status = get_status(conn->fd_in, id);
1.11 djm 774: if (status != SSH2_FX_OK)
1.36 markus 775: error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 776: newpath, fx2txt(status));
1.11 djm 777:
778: return(status);
779: }
780:
1.78 chl 781: #ifdef notyet
1.11 djm 782: char *
1.23 djm 783: do_readlink(struct sftp_conn *conn, char *path)
1.11 djm 784: {
785: Buffer msg;
786: u_int type, expected_id, count, id;
787: char *filename, *longname;
788: Attrib *a;
789:
1.23 djm 790: expected_id = id = conn->msg_id++;
791: send_string_request(conn->fd_out, id, SSH2_FXP_READLINK, path,
792: strlen(path));
1.11 djm 793:
794: buffer_init(&msg);
795:
1.23 djm 796: get_msg(conn->fd_in, &msg);
1.11 djm 797: type = buffer_get_char(&msg);
798: id = buffer_get_int(&msg);
799:
800: if (id != expected_id)
1.33 deraadt 801: fatal("ID mismatch (%u != %u)", id, expected_id);
1.11 djm 802:
803: if (type == SSH2_FXP_STATUS) {
804: u_int status = buffer_get_int(&msg);
805:
806: error("Couldn't readlink: %s", fx2txt(status));
807: return(NULL);
808: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 809: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.11 djm 810: SSH2_FXP_NAME, type);
811:
812: count = buffer_get_int(&msg);
813: if (count != 1)
814: fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
815:
816: filename = buffer_get_string(&msg, NULL);
817: longname = buffer_get_string(&msg, NULL);
818: a = decode_attrib(&msg);
819:
820: debug3("SSH_FXP_READLINK %s -> %s", path, filename);
821:
822: xfree(longname);
823:
824: buffer_free(&msg);
825:
826: return(filename);
1.82 djm 827: }
828: #endif
829:
830: int
1.84 dtucker 831: do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1.82 djm 832: int quiet)
833: {
834: Buffer msg;
835: u_int id;
836:
837: if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
838: error("Server does not support statvfs@openssh.com extension");
839: return -1;
840: }
841:
842: id = conn->msg_id++;
843:
844: buffer_init(&msg);
845: buffer_clear(&msg);
846: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
847: buffer_put_int(&msg, id);
848: buffer_put_cstring(&msg, "statvfs@openssh.com");
849: buffer_put_cstring(&msg, path);
850: send_msg(conn->fd_out, &msg);
851: buffer_free(&msg);
852:
853: return get_decode_statvfs(conn->fd_in, st, id, quiet);
854: }
855:
856: #ifdef notyet
857: int
858: do_fstatvfs(struct sftp_conn *conn, const char *handle, u_int handle_len,
1.84 dtucker 859: struct sftp_statvfs *st, int quiet)
1.82 djm 860: {
861: Buffer msg;
862: u_int id;
863:
864: if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
865: error("Server does not support fstatvfs@openssh.com extension");
866: return -1;
867: }
868:
869: id = conn->msg_id++;
870:
871: buffer_init(&msg);
872: buffer_clear(&msg);
873: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
874: buffer_put_int(&msg, id);
875: buffer_put_cstring(&msg, "fstatvfs@openssh.com");
876: buffer_put_string(&msg, handle, handle_len);
877: send_msg(conn->fd_out, &msg);
878: buffer_free(&msg);
879:
880: return get_decode_statvfs(conn->fd_in, st, id, quiet);
1.1 djm 881: }
1.78 chl 882: #endif
1.1 djm 883:
1.21 djm 884: static void
885: send_read_request(int fd_out, u_int id, u_int64_t offset, u_int len,
886: char *handle, u_int handle_len)
887: {
888: Buffer msg;
1.28 markus 889:
1.21 djm 890: buffer_init(&msg);
891: buffer_clear(&msg);
892: buffer_put_char(&msg, SSH2_FXP_READ);
893: buffer_put_int(&msg, id);
894: buffer_put_string(&msg, handle, handle_len);
895: buffer_put_int64(&msg, offset);
896: buffer_put_int(&msg, len);
897: send_msg(fd_out, &msg);
898: buffer_free(&msg);
1.28 markus 899: }
1.21 djm 900:
1.1 djm 901: int
1.23 djm 902: do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
903: int pflag)
1.1 djm 904: {
1.21 djm 905: Attrib junk, *a;
906: Buffer msg;
1.1 djm 907: char *handle;
1.57 dtucker 908: int local_fd, status = 0, write_error;
1.21 djm 909: int read_error, write_errno;
910: u_int64_t offset, size;
1.55 djm 911: u_int handle_len, mode, type, id, buflen, num_req, max_req;
1.39 fgsch 912: off_t progress_counter;
1.21 djm 913: struct request {
914: u_int id;
915: u_int len;
916: u_int64_t offset;
1.28 markus 917: TAILQ_ENTRY(request) tq;
1.21 djm 918: };
919: TAILQ_HEAD(reqhead, request) requests;
920: struct request *req;
921:
922: TAILQ_INIT(&requests);
1.1 djm 923:
1.23 djm 924: a = do_stat(conn, remote_path, 0);
1.1 djm 925: if (a == NULL)
926: return(-1);
927:
1.86 djm 928: /* Do not preserve set[ug]id here, as we do not preserve ownership */
1.1 djm 929: if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1.38 djm 930: mode = a->perm & 0777;
1.1 djm 931: else
932: mode = 0666;
933:
1.14 djm 934: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1.41 djm 935: (!S_ISREG(a->perm))) {
936: error("Cannot download non-regular file: %s", remote_path);
1.14 djm 937: return(-1);
938: }
939:
1.21 djm 940: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
941: size = a->size;
942: else
943: size = 0;
944:
1.23 djm 945: buflen = conn->transfer_buflen;
1.1 djm 946: buffer_init(&msg);
947:
948: /* Send open request */
1.23 djm 949: id = conn->msg_id++;
1.1 djm 950: buffer_put_char(&msg, SSH2_FXP_OPEN);
951: buffer_put_int(&msg, id);
952: buffer_put_cstring(&msg, remote_path);
953: buffer_put_int(&msg, SSH2_FXF_READ);
954: attrib_clear(&junk); /* Send empty attributes */
955: encode_attrib(&msg, &junk);
1.23 djm 956: send_msg(conn->fd_out, &msg);
1.33 deraadt 957: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 958:
1.88 ! djm 959: handle = get_handle(conn->fd_in, id, &handle_len,
! 960: "remote open(\"%s\")", remote_path);
1.1 djm 961: if (handle == NULL) {
962: buffer_free(&msg);
963: return(-1);
964: }
965:
1.45 djm 966: local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC,
1.38 djm 967: mode | S_IWRITE);
1.23 djm 968: if (local_fd == -1) {
969: error("Couldn't open local file \"%s\" for writing: %s",
970: local_path, strerror(errno));
1.79 djm 971: do_close(conn, handle, handle_len);
1.24 markus 972: buffer_free(&msg);
973: xfree(handle);
1.23 djm 974: return(-1);
975: }
976:
1.1 djm 977: /* Read from remote and write to local */
1.21 djm 978: write_error = read_error = write_errno = num_req = offset = 0;
979: max_req = 1;
1.39 fgsch 980: progress_counter = 0;
981:
1.47 djm 982: if (showprogress && size != 0)
983: start_progress_meter(remote_path, size, &progress_counter);
1.39 fgsch 984:
1.21 djm 985: while (num_req > 0 || max_req > 0) {
986: char *data;
1.1 djm 987: u_int len;
988:
1.49 djm 989: /*
1.51 deraadt 990: * Simulate EOF on interrupt: stop sending new requests and
1.49 djm 991: * allow outstanding requests to drain gracefully
992: */
993: if (interrupted) {
994: if (num_req == 0) /* If we haven't started yet... */
995: break;
996: max_req = 0;
997: }
998:
1.21 djm 999: /* Send some more requests */
1000: while (num_req < max_req) {
1.28 markus 1001: debug3("Request range %llu -> %llu (%d/%d)",
1.25 itojun 1002: (unsigned long long)offset,
1003: (unsigned long long)offset + buflen - 1,
1004: num_req, max_req);
1.21 djm 1005: req = xmalloc(sizeof(*req));
1.23 djm 1006: req->id = conn->msg_id++;
1.21 djm 1007: req->len = buflen;
1008: req->offset = offset;
1009: offset += buflen;
1010: num_req++;
1011: TAILQ_INSERT_TAIL(&requests, req, tq);
1.28 markus 1012: send_read_request(conn->fd_out, req->id, req->offset,
1.21 djm 1013: req->len, handle, handle_len);
1014: }
1.1 djm 1015:
1016: buffer_clear(&msg);
1.23 djm 1017: get_msg(conn->fd_in, &msg);
1.1 djm 1018: type = buffer_get_char(&msg);
1019: id = buffer_get_int(&msg);
1.33 deraadt 1020: debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1.21 djm 1021:
1022: /* Find the request in our queue */
1.53 deraadt 1023: for (req = TAILQ_FIRST(&requests);
1.21 djm 1024: req != NULL && req->id != id;
1025: req = TAILQ_NEXT(req, tq))
1026: ;
1027: if (req == NULL)
1028: fatal("Unexpected reply %u", id);
1029:
1030: switch (type) {
1031: case SSH2_FXP_STATUS:
1.5 djm 1032: status = buffer_get_int(&msg);
1.21 djm 1033: if (status != SSH2_FX_EOF)
1034: read_error = 1;
1035: max_req = 0;
1036: TAILQ_REMOVE(&requests, req, tq);
1037: xfree(req);
1038: num_req--;
1039: break;
1040: case SSH2_FXP_DATA:
1041: data = buffer_get_string(&msg, &len);
1.26 itojun 1042: debug3("Received data %llu -> %llu",
1.28 markus 1043: (unsigned long long)req->offset,
1.26 itojun 1044: (unsigned long long)req->offset + len - 1);
1.21 djm 1045: if (len > req->len)
1046: fatal("Received more data than asked for "
1.37 deraadt 1047: "%u > %u", len, req->len);
1.21 djm 1048: if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1.44 deraadt 1049: atomicio(vwrite, local_fd, data, len) != len) &&
1.21 djm 1050: !write_error) {
1051: write_errno = errno;
1052: write_error = 1;
1053: max_req = 0;
1054: }
1.39 fgsch 1055: progress_counter += len;
1.21 djm 1056: xfree(data);
1.1 djm 1057:
1.21 djm 1058: if (len == req->len) {
1059: TAILQ_REMOVE(&requests, req, tq);
1060: xfree(req);
1061: num_req--;
1062: } else {
1063: /* Resend the request for the missing data */
1064: debug3("Short data block, re-requesting "
1.26 itojun 1065: "%llu -> %llu (%2d)",
1.28 markus 1066: (unsigned long long)req->offset + len,
1.27 itojun 1067: (unsigned long long)req->offset +
1068: req->len - 1, num_req);
1.23 djm 1069: req->id = conn->msg_id++;
1.21 djm 1070: req->len -= len;
1071: req->offset += len;
1.28 markus 1072: send_read_request(conn->fd_out, req->id,
1.23 djm 1073: req->offset, req->len, handle, handle_len);
1.21 djm 1074: /* Reduce the request size */
1075: if (len < buflen)
1076: buflen = MAX(MIN_READ_SIZE, len);
1077: }
1078: if (max_req > 0) { /* max_req = 0 iff EOF received */
1079: if (size > 0 && offset > size) {
1080: /* Only one request at a time
1081: * after the expected EOF */
1082: debug3("Finish at %llu (%2d)",
1.26 itojun 1083: (unsigned long long)offset,
1084: num_req);
1.21 djm 1085: max_req = 1;
1.49 djm 1086: } else if (max_req <= conn->num_requests) {
1.21 djm 1087: ++max_req;
1088: }
1.1 djm 1089: }
1.21 djm 1090: break;
1091: default:
1.33 deraadt 1092: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1.1 djm 1093: SSH2_FXP_DATA, type);
1094: }
1.21 djm 1095: }
1.1 djm 1096:
1.39 fgsch 1097: if (showprogress && size)
1098: stop_progress_meter();
1099:
1.21 djm 1100: /* Sanity check */
1101: if (TAILQ_FIRST(&requests) != NULL)
1102: fatal("Transfer complete, but requests still in queue");
1103:
1104: if (read_error) {
1.28 markus 1105: error("Couldn't read from remote file \"%s\" : %s",
1.21 djm 1106: remote_path, fx2txt(status));
1.23 djm 1107: do_close(conn, handle, handle_len);
1.21 djm 1108: } else if (write_error) {
1109: error("Couldn't write to \"%s\": %s", local_path,
1110: strerror(write_errno));
1111: status = -1;
1.23 djm 1112: do_close(conn, handle, handle_len);
1.21 djm 1113: } else {
1.23 djm 1114: status = do_close(conn, handle, handle_len);
1.21 djm 1115:
1116: /* Override umask and utimes if asked */
1117: if (pflag && fchmod(local_fd, mode) == -1)
1118: error("Couldn't set mode on \"%s\": %s", local_path,
1.37 deraadt 1119: strerror(errno));
1.21 djm 1120: if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1121: struct timeval tv[2];
1122: tv[0].tv_sec = a->atime;
1123: tv[1].tv_sec = a->mtime;
1124: tv[0].tv_usec = tv[1].tv_usec = 0;
1125: if (utimes(local_path, tv) == -1)
1126: error("Can't set times on \"%s\": %s",
1.37 deraadt 1127: local_path, strerror(errno));
1.1 djm 1128: }
1.10 djm 1129: }
1.5 djm 1130: close(local_fd);
1131: buffer_free(&msg);
1.1 djm 1132: xfree(handle);
1.23 djm 1133:
1134: return(status);
1.1 djm 1135: }
1136:
1137: int
1.23 djm 1138: do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
1139: int pflag)
1.1 djm 1140: {
1.80 djm 1141: int local_fd;
1142: int status = SSH2_FX_OK;
1.22 djm 1143: u_int handle_len, id, type;
1.77 djm 1144: off_t offset;
1.20 djm 1145: char *handle, *data;
1.1 djm 1146: Buffer msg;
1147: struct stat sb;
1148: Attrib a;
1.21 djm 1149: u_int32_t startid;
1150: u_int32_t ackid;
1.22 djm 1151: struct outstanding_ack {
1152: u_int id;
1153: u_int len;
1.77 djm 1154: off_t offset;
1.28 markus 1155: TAILQ_ENTRY(outstanding_ack) tq;
1.22 djm 1156: };
1157: TAILQ_HEAD(ackhead, outstanding_ack) acks;
1.50 pedro 1158: struct outstanding_ack *ack = NULL;
1.22 djm 1159:
1160: TAILQ_INIT(&acks);
1.1 djm 1161:
1162: if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1163: error("Couldn't open local file \"%s\" for reading: %s",
1164: local_path, strerror(errno));
1165: return(-1);
1166: }
1167: if (fstat(local_fd, &sb) == -1) {
1168: error("Couldn't fstat local file \"%s\": %s",
1169: local_path, strerror(errno));
1.41 djm 1170: close(local_fd);
1171: return(-1);
1172: }
1173: if (!S_ISREG(sb.st_mode)) {
1174: error("%s is not a regular file", local_path);
1.1 djm 1175: close(local_fd);
1176: return(-1);
1177: }
1178: stat_to_attrib(&sb, &a);
1179:
1180: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1181: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1182: a.perm &= 0777;
1183: if (!pflag)
1184: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1185:
1186: buffer_init(&msg);
1187:
1188: /* Send open request */
1.23 djm 1189: id = conn->msg_id++;
1.1 djm 1190: buffer_put_char(&msg, SSH2_FXP_OPEN);
1191: buffer_put_int(&msg, id);
1192: buffer_put_cstring(&msg, remote_path);
1193: buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC);
1194: encode_attrib(&msg, &a);
1.23 djm 1195: send_msg(conn->fd_out, &msg);
1.33 deraadt 1196: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1197:
1198: buffer_clear(&msg);
1199:
1.88 ! djm 1200: handle = get_handle(conn->fd_in, id, &handle_len,
! 1201: "remote open(\"%s\")", remote_path);
1.1 djm 1202: if (handle == NULL) {
1203: close(local_fd);
1204: buffer_free(&msg);
1.80 djm 1205: return -1;
1.1 djm 1206: }
1207:
1.21 djm 1208: startid = ackid = id + 1;
1.23 djm 1209: data = xmalloc(conn->transfer_buflen);
1.20 djm 1210:
1.1 djm 1211: /* Read from local and write to remote */
1212: offset = 0;
1.39 fgsch 1213: if (showprogress)
1214: start_progress_meter(local_path, sb.st_size, &offset);
1215:
1.19 deraadt 1216: for (;;) {
1.1 djm 1217: int len;
1218:
1219: /*
1.51 deraadt 1220: * Can't use atomicio here because it returns 0 on EOF,
1.49 djm 1221: * thus losing the last block of the file.
1.51 deraadt 1222: * Simulate an EOF on interrupt, allowing ACKs from the
1.49 djm 1223: * server to drain.
1.1 djm 1224: */
1.80 djm 1225: if (interrupted || status != SSH2_FX_OK)
1.49 djm 1226: len = 0;
1227: else do
1.23 djm 1228: len = read(local_fd, data, conn->transfer_buflen);
1.1 djm 1229: while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1230:
1231: if (len == -1)
1232: fatal("Couldn't read from \"%s\": %s", local_path,
1233: strerror(errno));
1.21 djm 1234:
1235: if (len != 0) {
1.22 djm 1236: ack = xmalloc(sizeof(*ack));
1237: ack->id = ++id;
1238: ack->offset = offset;
1239: ack->len = len;
1240: TAILQ_INSERT_TAIL(&acks, ack, tq);
1241:
1.21 djm 1242: buffer_clear(&msg);
1243: buffer_put_char(&msg, SSH2_FXP_WRITE);
1.22 djm 1244: buffer_put_int(&msg, ack->id);
1.21 djm 1245: buffer_put_string(&msg, handle, handle_len);
1246: buffer_put_int64(&msg, offset);
1247: buffer_put_string(&msg, data, len);
1.23 djm 1248: send_msg(conn->fd_out, &msg);
1.33 deraadt 1249: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1.37 deraadt 1250: id, (unsigned long long)offset, len);
1.22 djm 1251: } else if (TAILQ_FIRST(&acks) == NULL)
1.1 djm 1252: break;
1253:
1.22 djm 1254: if (ack == NULL)
1255: fatal("Unexpected ACK %u", id);
1256:
1.28 markus 1257: if (id == startid || len == 0 ||
1.23 djm 1258: id - ackid >= conn->num_requests) {
1.32 markus 1259: u_int r_id;
1.31 djm 1260:
1.22 djm 1261: buffer_clear(&msg);
1.23 djm 1262: get_msg(conn->fd_in, &msg);
1.22 djm 1263: type = buffer_get_char(&msg);
1.31 djm 1264: r_id = buffer_get_int(&msg);
1.22 djm 1265:
1266: if (type != SSH2_FXP_STATUS)
1267: fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1268: "got %d", SSH2_FXP_STATUS, type);
1269:
1270: status = buffer_get_int(&msg);
1271: debug3("SSH2_FXP_STATUS %d", status);
1272:
1273: /* Find the request in our queue */
1.53 deraadt 1274: for (ack = TAILQ_FIRST(&acks);
1.31 djm 1275: ack != NULL && ack->id != r_id;
1.22 djm 1276: ack = TAILQ_NEXT(ack, tq))
1277: ;
1278: if (ack == NULL)
1.33 deraadt 1279: fatal("Can't find request for ID %u", r_id);
1.22 djm 1280: TAILQ_REMOVE(&acks, ack, tq);
1.77 djm 1281: debug3("In write loop, ack for %u %u bytes at %lld",
1282: ack->id, ack->len, (long long)ack->offset);
1.21 djm 1283: ++ackid;
1.34 deraadt 1284: xfree(ack);
1.1 djm 1285: }
1286: offset += len;
1.77 djm 1287: if (offset < 0)
1288: fatal("%s: offset < 0", __func__);
1.1 djm 1289: }
1.80 djm 1290: buffer_free(&msg);
1291:
1.39 fgsch 1292: if (showprogress)
1293: stop_progress_meter();
1.20 djm 1294: xfree(data);
1.1 djm 1295:
1.80 djm 1296: if (status != SSH2_FX_OK) {
1297: error("Couldn't write to remote file \"%s\": %s",
1298: remote_path, fx2txt(status));
1299: status = -1;
1300: }
1301:
1.1 djm 1302: if (close(local_fd) == -1) {
1303: error("Couldn't close local file \"%s\": %s", local_path,
1304: strerror(errno));
1.5 djm 1305: status = -1;
1.1 djm 1306: }
1307:
1.10 djm 1308: /* Override umask and utimes if asked */
1309: if (pflag)
1.23 djm 1310: do_fsetstat(conn, handle, handle_len, &a);
1.10 djm 1311:
1.80 djm 1312: if (do_close(conn, handle, handle_len) != SSH2_FX_OK)
1313: status = -1;
1314: xfree(handle);
1.5 djm 1315:
1.80 djm 1316: return status;
1.1 djm 1317: }
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