Annotation of src/usr.bin/ssh/sftp-client.c, Revision 1.93
1.93 ! djm 1: /* $OpenBSD: sftp-client.c,v 1.92 2010/07/19 03:16:33 djm 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>
1.93 ! djm 24: #include <sys/poll.h>
1.21 djm 25: #include <sys/queue.h>
1.60 stevesk 26: #include <sys/stat.h>
1.71 stevesk 27: #include <sys/time.h>
1.72 stevesk 28: #include <sys/param.h>
1.82 djm 29: #include <sys/statvfs.h>
1.74 deraadt 30: #include <sys/uio.h>
1.66 stevesk 31:
1.89 djm 32: #include <dirent.h>
1.67 stevesk 33: #include <errno.h>
1.66 stevesk 34: #include <fcntl.h>
1.70 stevesk 35: #include <signal.h>
1.87 dtucker 36: #include <stdarg.h>
1.73 stevesk 37: #include <stdio.h>
1.69 stevesk 38: #include <string.h>
1.68 stevesk 39: #include <unistd.h>
1.1 djm 40:
1.74 deraadt 41: #include "xmalloc.h"
1.1 djm 42: #include "buffer.h"
43: #include "log.h"
44: #include "atomicio.h"
1.39 fgsch 45: #include "progressmeter.h"
1.64 djm 46: #include "misc.h"
1.1 djm 47:
48: #include "sftp.h"
49: #include "sftp-common.h"
50: #include "sftp-client.h"
51:
1.49 djm 52: extern volatile sig_atomic_t interrupted;
1.39 fgsch 53: extern int showprogress;
54:
1.59 david 55: /* Minimum amount of data to read at a time */
1.21 djm 56: #define MIN_READ_SIZE 512
57:
1.89 djm 58: /* Maximum depth to descend in directory trees */
59: #define MAX_DIR_DEPTH 64
60:
1.23 djm 61: struct sftp_conn {
62: int fd_in;
63: int fd_out;
64: u_int transfer_buflen;
65: u_int num_requests;
66: u_int version;
67: u_int msg_id;
1.82 djm 68: #define SFTP_EXT_POSIX_RENAME 0x00000001
69: #define SFTP_EXT_STATVFS 0x00000002
70: #define SFTP_EXT_FSTATVFS 0x00000004
1.81 djm 71: u_int exts;
1.93 ! djm 72: u_int64_t limit_kbps;
! 73: struct bwlimit bwlimit_in, bwlimit_out;
1.23 djm 74: };
1.4 djm 75:
1.88 djm 76: static char *
1.93 ! djm 77: get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len,
! 78: const char *errfmt, ...) __attribute__((format(printf, 4, 5)));
! 79:
! 80: /* ARGSUSED */
! 81: static int
! 82: sftpio(void *_bwlimit, size_t amount)
! 83: {
! 84: struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit;
! 85:
! 86: bandwidth_limit(bwlimit, amount);
! 87: return 0;
! 88: }
1.88 djm 89:
1.17 itojun 90: static void
1.93 ! djm 91: send_msg(struct sftp_conn *conn, Buffer *m)
1.1 djm 92: {
1.40 djm 93: u_char mlen[4];
1.65 djm 94: struct iovec iov[2];
1.40 djm 95:
1.58 djm 96: if (buffer_len(m) > SFTP_MAX_MSG_LENGTH)
1.40 djm 97: fatal("Outbound message too long %u", buffer_len(m));
98:
99: /* Send length first */
1.64 djm 100: put_u32(mlen, buffer_len(m));
1.65 djm 101: iov[0].iov_base = mlen;
102: iov[0].iov_len = sizeof(mlen);
103: iov[1].iov_base = buffer_ptr(m);
104: iov[1].iov_len = buffer_len(m);
1.74 deraadt 105:
1.93 ! djm 106: if (atomiciov6(writev, conn->fd_out, iov, 2,
! 107: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_out) !=
! 108: buffer_len(m) + sizeof(mlen))
1.1 djm 109: fatal("Couldn't send packet: %s", strerror(errno));
110:
1.40 djm 111: buffer_clear(m);
1.1 djm 112: }
113:
1.17 itojun 114: static void
1.93 ! djm 115: get_msg(struct sftp_conn *conn, Buffer *m)
1.1 djm 116: {
1.40 djm 117: u_int msg_len;
1.1 djm 118:
1.40 djm 119: buffer_append_space(m, 4);
1.93 ! djm 120: if (atomicio6(read, conn->fd_in, buffer_ptr(m), 4,
! 121: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in) != 4) {
1.54 avsm 122: if (errno == EPIPE)
123: fatal("Connection closed");
124: else
125: fatal("Couldn't read packet: %s", strerror(errno));
126: }
1.1 djm 127:
1.40 djm 128: msg_len = buffer_get_int(m);
1.58 djm 129: if (msg_len > SFTP_MAX_MSG_LENGTH)
1.33 deraadt 130: fatal("Received message too long %u", msg_len);
1.1 djm 131:
1.40 djm 132: buffer_append_space(m, msg_len);
1.93 ! djm 133: if (atomicio6(read, conn->fd_in, buffer_ptr(m), msg_len,
! 134: conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in)
! 135: != msg_len) {
1.54 avsm 136: if (errno == EPIPE)
137: fatal("Connection closed");
138: else
139: fatal("Read packet: %s", strerror(errno));
140: }
1.1 djm 141: }
142:
1.17 itojun 143: static void
1.93 ! djm 144: send_string_request(struct sftp_conn *conn, u_int id, u_int code, char *s,
1.1 djm 145: u_int len)
146: {
147: Buffer msg;
148:
149: buffer_init(&msg);
150: buffer_put_char(&msg, code);
151: buffer_put_int(&msg, id);
152: buffer_put_string(&msg, s, len);
1.93 ! djm 153: send_msg(conn, &msg);
! 154: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.1 djm 155: buffer_free(&msg);
156: }
157:
1.17 itojun 158: static void
1.93 ! djm 159: send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code,
! 160: char *s, u_int len, Attrib *a)
1.1 djm 161: {
162: Buffer msg;
163:
164: buffer_init(&msg);
165: buffer_put_char(&msg, code);
166: buffer_put_int(&msg, id);
167: buffer_put_string(&msg, s, len);
168: encode_attrib(&msg, a);
1.93 ! djm 169: send_msg(conn, &msg);
! 170: debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id);
1.1 djm 171: buffer_free(&msg);
172: }
173:
1.17 itojun 174: static u_int
1.93 ! djm 175: get_status(struct sftp_conn *conn, u_int expected_id)
1.1 djm 176: {
177: Buffer msg;
178: u_int type, id, status;
179:
180: buffer_init(&msg);
1.93 ! djm 181: get_msg(conn, &msg);
1.1 djm 182: type = buffer_get_char(&msg);
183: id = buffer_get_int(&msg);
184:
185: if (id != expected_id)
1.33 deraadt 186: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 187: if (type != SSH2_FXP_STATUS)
1.33 deraadt 188: fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u",
1.1 djm 189: SSH2_FXP_STATUS, type);
190:
191: status = buffer_get_int(&msg);
192: buffer_free(&msg);
193:
1.33 deraadt 194: debug3("SSH2_FXP_STATUS %u", status);
1.1 djm 195:
1.93 ! djm 196: return status;
1.1 djm 197: }
198:
1.17 itojun 199: static char *
1.93 ! djm 200: get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len,
! 201: const char *errfmt, ...)
1.1 djm 202: {
203: Buffer msg;
204: u_int type, id;
1.88 djm 205: char *handle, errmsg[256];
206: va_list args;
207: int status;
208:
209: va_start(args, errfmt);
210: if (errfmt != NULL)
211: vsnprintf(errmsg, sizeof(errmsg), errfmt, args);
212: va_end(args);
1.1 djm 213:
214: buffer_init(&msg);
1.93 ! djm 215: get_msg(conn, &msg);
1.1 djm 216: type = buffer_get_char(&msg);
217: id = buffer_get_int(&msg);
218:
219: if (id != expected_id)
1.88 djm 220: fatal("%s: ID mismatch (%u != %u)",
221: errfmt == NULL ? __func__ : errmsg, id, expected_id);
1.1 djm 222: if (type == SSH2_FXP_STATUS) {
1.88 djm 223: status = buffer_get_int(&msg);
224: if (errfmt != NULL)
225: error("%s: %s", errmsg, fx2txt(status));
1.52 markus 226: buffer_free(&msg);
1.1 djm 227: return(NULL);
228: } else if (type != SSH2_FXP_HANDLE)
1.88 djm 229: fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u",
230: errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type);
1.1 djm 231:
232: handle = buffer_get_string(&msg, len);
233: buffer_free(&msg);
234:
235: return(handle);
236: }
237:
1.17 itojun 238: static Attrib *
1.93 ! djm 239: get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet)
1.1 djm 240: {
241: Buffer msg;
242: u_int type, id;
243: Attrib *a;
244:
245: buffer_init(&msg);
1.93 ! djm 246: get_msg(conn, &msg);
1.1 djm 247:
248: type = buffer_get_char(&msg);
249: id = buffer_get_int(&msg);
250:
1.33 deraadt 251: debug3("Received stat reply T:%u I:%u", type, id);
1.1 djm 252: if (id != expected_id)
1.33 deraadt 253: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 254: if (type == SSH2_FXP_STATUS) {
255: int status = buffer_get_int(&msg);
256:
1.14 djm 257: if (quiet)
258: debug("Couldn't stat remote file: %s", fx2txt(status));
259: else
260: error("Couldn't stat remote file: %s", fx2txt(status));
1.52 markus 261: buffer_free(&msg);
1.1 djm 262: return(NULL);
263: } else if (type != SSH2_FXP_ATTRS) {
1.33 deraadt 264: fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u",
1.1 djm 265: SSH2_FXP_ATTRS, type);
266: }
267: a = decode_attrib(&msg);
268: buffer_free(&msg);
269:
270: return(a);
271: }
272:
1.82 djm 273: static int
1.93 ! djm 274: get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st,
! 275: u_int expected_id, int quiet)
1.82 djm 276: {
277: Buffer msg;
278: u_int type, id, flag;
279:
280: buffer_init(&msg);
1.93 ! djm 281: get_msg(conn, &msg);
1.82 djm 282:
283: type = buffer_get_char(&msg);
284: id = buffer_get_int(&msg);
285:
286: debug3("Received statvfs reply T:%u I:%u", type, id);
287: if (id != expected_id)
288: fatal("ID mismatch (%u != %u)", id, expected_id);
289: if (type == SSH2_FXP_STATUS) {
290: int status = buffer_get_int(&msg);
291:
292: if (quiet)
293: debug("Couldn't statvfs: %s", fx2txt(status));
294: else
295: error("Couldn't statvfs: %s", fx2txt(status));
296: buffer_free(&msg);
297: return -1;
298: } else if (type != SSH2_FXP_EXTENDED_REPLY) {
299: fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u",
300: SSH2_FXP_EXTENDED_REPLY, type);
301: }
302:
303: bzero(st, sizeof(*st));
1.84 dtucker 304: st->f_bsize = buffer_get_int64(&msg);
305: st->f_frsize = buffer_get_int64(&msg);
1.82 djm 306: st->f_blocks = buffer_get_int64(&msg);
307: st->f_bfree = buffer_get_int64(&msg);
308: st->f_bavail = buffer_get_int64(&msg);
309: st->f_files = buffer_get_int64(&msg);
310: st->f_ffree = buffer_get_int64(&msg);
311: st->f_favail = buffer_get_int64(&msg);
1.83 djm 312: st->f_fsid = buffer_get_int64(&msg);
1.84 dtucker 313: flag = buffer_get_int64(&msg);
314: st->f_namemax = buffer_get_int64(&msg);
1.82 djm 315:
316: st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0;
317: st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0;
318:
319: buffer_free(&msg);
320:
321: return 0;
322: }
323:
1.23 djm 324: struct sftp_conn *
1.93 ! djm 325: do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests,
! 326: u_int64_t limit_kbps)
1.1 djm 327: {
1.93 ! djm 328: u_int type;
1.1 djm 329: Buffer msg;
1.23 djm 330: struct sftp_conn *ret;
1.1 djm 331:
1.93 ! djm 332: ret = xmalloc(sizeof(*ret));
! 333: ret->fd_in = fd_in;
! 334: ret->fd_out = fd_out;
! 335: ret->transfer_buflen = transfer_buflen;
! 336: ret->num_requests = num_requests;
! 337: ret->exts = 0;
! 338: ret->limit_kbps = 0;
! 339:
1.1 djm 340: buffer_init(&msg);
341: buffer_put_char(&msg, SSH2_FXP_INIT);
342: buffer_put_int(&msg, SSH2_FILEXFER_VERSION);
1.93 ! djm 343: send_msg(ret, &msg);
1.1 djm 344:
345: buffer_clear(&msg);
346:
1.93 ! djm 347: get_msg(ret, &msg);
1.1 djm 348:
1.3 stevesk 349: /* Expecting a VERSION reply */
1.1 djm 350: if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) {
1.33 deraadt 351: error("Invalid packet back from SSH2_FXP_INIT (type %u)",
1.1 djm 352: type);
353: buffer_free(&msg);
1.23 djm 354: return(NULL);
1.1 djm 355: }
1.93 ! djm 356: ret->version = buffer_get_int(&msg);
1.1 djm 357:
1.93 ! djm 358: debug2("Remote version: %u", ret->version);
1.1 djm 359:
360: /* Check for extensions */
361: while (buffer_len(&msg) > 0) {
362: char *name = buffer_get_string(&msg, NULL);
363: char *value = buffer_get_string(&msg, NULL);
1.85 djm 364: int known = 0;
1.1 djm 365:
1.82 djm 366: if (strcmp(name, "posix-rename@openssh.com") == 0 &&
1.85 djm 367: strcmp(value, "1") == 0) {
1.93 ! djm 368: ret->exts |= SFTP_EXT_POSIX_RENAME;
1.85 djm 369: known = 1;
370: } else if (strcmp(name, "statvfs@openssh.com") == 0 &&
371: strcmp(value, "2") == 0) {
1.93 ! djm 372: ret->exts |= SFTP_EXT_STATVFS;
1.85 djm 373: known = 1;
374: } if (strcmp(name, "fstatvfs@openssh.com") == 0 &&
375: strcmp(value, "2") == 0) {
1.93 ! djm 376: ret->exts |= SFTP_EXT_FSTATVFS;
1.85 djm 377: known = 1;
378: }
379: if (known) {
380: debug2("Server supports extension \"%s\" revision %s",
381: name, value);
382: } else {
383: debug2("Unrecognised server extension \"%s\"", name);
384: }
1.1 djm 385: xfree(name);
386: xfree(value);
387: }
388:
389: buffer_free(&msg);
1.11 djm 390:
1.23 djm 391: /* Some filexfer v.0 servers don't support large packets */
1.93 ! djm 392: if (ret->version == 0)
1.29 markus 393: ret->transfer_buflen = MIN(ret->transfer_buflen, 20480);
1.23 djm 394:
1.93 ! djm 395: ret->limit_kbps = limit_kbps;
! 396: if (ret->limit_kbps > 0) {
! 397: bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps,
! 398: ret->transfer_buflen);
! 399: bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps,
! 400: ret->transfer_buflen);
! 401: }
! 402:
! 403: return ret;
1.23 djm 404: }
405:
406: u_int
407: sftp_proto_version(struct sftp_conn *conn)
408: {
1.93 ! djm 409: return conn->version;
1.1 djm 410: }
411:
412: int
1.23 djm 413: do_close(struct sftp_conn *conn, char *handle, u_int handle_len)
1.1 djm 414: {
415: u_int id, status;
416: Buffer msg;
417:
418: buffer_init(&msg);
419:
1.23 djm 420: id = conn->msg_id++;
1.1 djm 421: buffer_put_char(&msg, SSH2_FXP_CLOSE);
422: buffer_put_int(&msg, id);
423: buffer_put_string(&msg, handle, handle_len);
1.93 ! djm 424: send_msg(conn, &msg);
1.33 deraadt 425: debug3("Sent message SSH2_FXP_CLOSE I:%u", id);
1.1 djm 426:
1.93 ! djm 427: status = get_status(conn, id);
1.1 djm 428: if (status != SSH2_FX_OK)
429: error("Couldn't close file: %s", fx2txt(status));
430:
431: buffer_free(&msg);
432:
1.93 ! djm 433: return status;
1.1 djm 434: }
435:
1.12 djm 436:
1.17 itojun 437: static int
1.23 djm 438: do_lsreaddir(struct sftp_conn *conn, char *path, int printflag,
1.12 djm 439: SFTP_DIRENT ***dir)
1.1 djm 440: {
441: Buffer msg;
1.55 djm 442: u_int count, type, id, handle_len, i, expected_id, ents = 0;
1.1 djm 443: char *handle;
444:
1.23 djm 445: id = conn->msg_id++;
1.1 djm 446:
447: buffer_init(&msg);
448: buffer_put_char(&msg, SSH2_FXP_OPENDIR);
449: buffer_put_int(&msg, id);
450: buffer_put_cstring(&msg, path);
1.93 ! djm 451: send_msg(conn, &msg);
1.1 djm 452:
453: buffer_clear(&msg);
454:
1.93 ! djm 455: handle = get_handle(conn, id, &handle_len,
1.88 djm 456: "remote readdir(\"%s\")", path);
1.1 djm 457: if (handle == NULL)
1.93 ! djm 458: return -1;
1.1 djm 459:
1.12 djm 460: if (dir) {
461: ents = 0;
462: *dir = xmalloc(sizeof(**dir));
463: (*dir)[0] = NULL;
464: }
465:
1.49 djm 466: for (; !interrupted;) {
1.23 djm 467: id = expected_id = conn->msg_id++;
1.1 djm 468:
1.33 deraadt 469: debug3("Sending SSH2_FXP_READDIR I:%u", id);
1.1 djm 470:
471: buffer_clear(&msg);
472: buffer_put_char(&msg, SSH2_FXP_READDIR);
473: buffer_put_int(&msg, id);
474: buffer_put_string(&msg, handle, handle_len);
1.93 ! djm 475: send_msg(conn, &msg);
1.1 djm 476:
477: buffer_clear(&msg);
478:
1.93 ! djm 479: get_msg(conn, &msg);
1.1 djm 480:
481: type = buffer_get_char(&msg);
482: id = buffer_get_int(&msg);
483:
1.33 deraadt 484: debug3("Received reply T:%u I:%u", type, id);
1.1 djm 485:
486: if (id != expected_id)
1.33 deraadt 487: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 488:
489: if (type == SSH2_FXP_STATUS) {
490: int status = buffer_get_int(&msg);
491:
492: debug3("Received SSH2_FXP_STATUS %d", status);
493:
494: if (status == SSH2_FX_EOF) {
495: break;
496: } else {
497: error("Couldn't read directory: %s",
498: fx2txt(status));
1.23 djm 499: do_close(conn, handle, handle_len);
1.42 markus 500: xfree(handle);
1.9 djm 501: return(status);
1.1 djm 502: }
503: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 504: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 505: SSH2_FXP_NAME, type);
506:
507: count = buffer_get_int(&msg);
1.7 markus 508: if (count == 0)
509: break;
1.8 stevesk 510: debug3("Received %d SSH2_FXP_NAME responses", count);
1.19 deraadt 511: for (i = 0; i < count; i++) {
1.1 djm 512: char *filename, *longname;
513: Attrib *a;
514:
515: filename = buffer_get_string(&msg, NULL);
516: longname = buffer_get_string(&msg, NULL);
517: a = decode_attrib(&msg);
518:
1.12 djm 519: if (printflag)
520: printf("%s\n", longname);
521:
1.89 djm 522: /*
523: * Directory entries should never contain '/'
524: * These can be used to attack recursive ops
525: * (e.g. send '../../../../etc/passwd')
526: */
527: if (strchr(filename, '/') != NULL) {
528: error("Server sent suspect path \"%s\" "
529: "during readdir of \"%s\"", filename, path);
530: goto next;
531: }
532:
1.12 djm 533: if (dir) {
1.62 djm 534: *dir = xrealloc(*dir, ents + 2, sizeof(**dir));
1.12 djm 535: (*dir)[ents] = xmalloc(sizeof(***dir));
536: (*dir)[ents]->filename = xstrdup(filename);
537: (*dir)[ents]->longname = xstrdup(longname);
538: memcpy(&(*dir)[ents]->a, a, sizeof(*a));
539: (*dir)[++ents] = NULL;
540: }
1.89 djm 541: next:
1.1 djm 542: xfree(filename);
543: xfree(longname);
544: }
545: }
546:
547: buffer_free(&msg);
1.23 djm 548: do_close(conn, handle, handle_len);
1.1 djm 549: xfree(handle);
550:
1.49 djm 551: /* Don't return partial matches on interrupt */
552: if (interrupted && dir != NULL && *dir != NULL) {
553: free_sftp_dirents(*dir);
554: *dir = xmalloc(sizeof(**dir));
555: **dir = NULL;
556: }
557:
1.93 ! djm 558: return 0;
1.12 djm 559: }
560:
561: int
1.23 djm 562: do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir)
1.12 djm 563: {
1.23 djm 564: return(do_lsreaddir(conn, path, 0, dir));
1.12 djm 565: }
566:
567: void free_sftp_dirents(SFTP_DIRENT **s)
568: {
569: int i;
1.19 deraadt 570:
571: for (i = 0; s[i]; i++) {
1.12 djm 572: xfree(s[i]->filename);
573: xfree(s[i]->longname);
574: xfree(s[i]);
575: }
576: xfree(s);
577: }
578:
579: int
1.23 djm 580: do_rm(struct sftp_conn *conn, char *path)
1.1 djm 581: {
582: u_int status, id;
583:
584: debug2("Sending SSH2_FXP_REMOVE \"%s\"", path);
585:
1.23 djm 586: id = conn->msg_id++;
1.93 ! djm 587: send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path));
! 588: status = get_status(conn, id);
1.1 djm 589: if (status != SSH2_FX_OK)
590: error("Couldn't delete file: %s", fx2txt(status));
591: return(status);
592: }
593:
594: int
1.89 djm 595: do_mkdir(struct sftp_conn *conn, char *path, Attrib *a, int printflag)
1.1 djm 596: {
597: u_int status, id;
598:
1.23 djm 599: id = conn->msg_id++;
1.93 ! djm 600: send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path,
1.1 djm 601: strlen(path), a);
602:
1.93 ! djm 603: status = get_status(conn, id);
1.89 djm 604: if (status != SSH2_FX_OK && printflag)
1.1 djm 605: error("Couldn't create directory: %s", fx2txt(status));
606:
607: return(status);
608: }
609:
610: int
1.23 djm 611: do_rmdir(struct sftp_conn *conn, char *path)
1.1 djm 612: {
613: u_int status, id;
614:
1.23 djm 615: id = conn->msg_id++;
1.93 ! djm 616: send_string_request(conn, id, SSH2_FXP_RMDIR, path,
1.23 djm 617: strlen(path));
1.1 djm 618:
1.93 ! djm 619: status = get_status(conn, id);
1.1 djm 620: if (status != SSH2_FX_OK)
621: error("Couldn't remove directory: %s", fx2txt(status));
622:
623: return(status);
624: }
625:
626: Attrib *
1.23 djm 627: do_stat(struct sftp_conn *conn, char *path, int quiet)
1.1 djm 628: {
629: u_int id;
630:
1.23 djm 631: id = conn->msg_id++;
632:
1.93 ! djm 633: send_string_request(conn, id,
1.28 markus 634: conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT,
1.23 djm 635: path, strlen(path));
636:
1.93 ! djm 637: return(get_decode_stat(conn, id, quiet));
1.1 djm 638: }
639:
640: Attrib *
1.23 djm 641: do_lstat(struct sftp_conn *conn, char *path, int quiet)
1.1 djm 642: {
643: u_int id;
644:
1.23 djm 645: if (conn->version == 0) {
646: if (quiet)
647: debug("Server version does not support lstat operation");
648: else
1.43 itojun 649: logit("Server version does not support lstat operation");
1.30 markus 650: return(do_stat(conn, path, quiet));
1.23 djm 651: }
652:
653: id = conn->msg_id++;
1.93 ! djm 654: send_string_request(conn, id, SSH2_FXP_LSTAT, path,
1.23 djm 655: strlen(path));
656:
1.93 ! djm 657: return(get_decode_stat(conn, id, quiet));
1.1 djm 658: }
659:
1.78 chl 660: #ifdef notyet
1.1 djm 661: Attrib *
1.23 djm 662: do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet)
1.1 djm 663: {
664: u_int id;
665:
1.23 djm 666: id = conn->msg_id++;
1.93 ! djm 667: send_string_request(conn, id, SSH2_FXP_FSTAT, handle,
1.23 djm 668: handle_len);
669:
1.93 ! djm 670: return(get_decode_stat(conn, id, quiet));
1.1 djm 671: }
1.78 chl 672: #endif
1.1 djm 673:
674: int
1.23 djm 675: do_setstat(struct sftp_conn *conn, char *path, Attrib *a)
1.1 djm 676: {
677: u_int status, id;
678:
1.23 djm 679: id = conn->msg_id++;
1.93 ! djm 680: send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path,
1.1 djm 681: strlen(path), a);
682:
1.93 ! djm 683: status = get_status(conn, id);
1.1 djm 684: if (status != SSH2_FX_OK)
685: error("Couldn't setstat on \"%s\": %s", path,
686: fx2txt(status));
687:
688: return(status);
689: }
690:
691: int
1.23 djm 692: do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len,
1.1 djm 693: Attrib *a)
694: {
695: u_int status, id;
696:
1.23 djm 697: id = conn->msg_id++;
1.93 ! djm 698: send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle,
1.1 djm 699: handle_len, a);
700:
1.93 ! djm 701: status = get_status(conn, id);
1.1 djm 702: if (status != SSH2_FX_OK)
703: error("Couldn't fsetstat: %s", fx2txt(status));
704:
705: return(status);
706: }
707:
708: char *
1.23 djm 709: do_realpath(struct sftp_conn *conn, char *path)
1.1 djm 710: {
711: Buffer msg;
712: u_int type, expected_id, count, id;
713: char *filename, *longname;
714: Attrib *a;
715:
1.23 djm 716: expected_id = id = conn->msg_id++;
1.93 ! djm 717: send_string_request(conn, id, SSH2_FXP_REALPATH, path,
1.23 djm 718: strlen(path));
1.1 djm 719:
720: buffer_init(&msg);
721:
1.93 ! djm 722: get_msg(conn, &msg);
1.1 djm 723: type = buffer_get_char(&msg);
724: id = buffer_get_int(&msg);
725:
726: if (id != expected_id)
1.33 deraadt 727: fatal("ID mismatch (%u != %u)", id, expected_id);
1.1 djm 728:
729: if (type == SSH2_FXP_STATUS) {
730: u_int status = buffer_get_int(&msg);
731:
732: error("Couldn't canonicalise: %s", fx2txt(status));
1.91 djm 733: buffer_free(&msg);
734: return NULL;
1.1 djm 735: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 736: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.1 djm 737: SSH2_FXP_NAME, type);
738:
739: count = buffer_get_int(&msg);
740: if (count != 1)
741: fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count);
742:
743: filename = buffer_get_string(&msg, NULL);
744: longname = buffer_get_string(&msg, NULL);
745: a = decode_attrib(&msg);
746:
747: debug3("SSH_FXP_REALPATH %s -> %s", path, filename);
748:
749: xfree(longname);
750:
751: buffer_free(&msg);
752:
753: return(filename);
754: }
755:
756: int
1.23 djm 757: do_rename(struct sftp_conn *conn, char *oldpath, char *newpath)
1.1 djm 758: {
759: Buffer msg;
760: u_int status, id;
761:
762: buffer_init(&msg);
763:
764: /* Send rename request */
1.23 djm 765: id = conn->msg_id++;
1.81 djm 766: if ((conn->exts & SFTP_EXT_POSIX_RENAME)) {
767: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
768: buffer_put_int(&msg, id);
769: buffer_put_cstring(&msg, "posix-rename@openssh.com");
770: } else {
771: buffer_put_char(&msg, SSH2_FXP_RENAME);
772: buffer_put_int(&msg, id);
773: }
1.1 djm 774: buffer_put_cstring(&msg, oldpath);
775: buffer_put_cstring(&msg, newpath);
1.93 ! djm 776: send_msg(conn, &msg);
1.81 djm 777: debug3("Sent message %s \"%s\" -> \"%s\"",
778: (conn->exts & SFTP_EXT_POSIX_RENAME) ? "posix-rename@openssh.com" :
779: "SSH2_FXP_RENAME", oldpath, newpath);
1.1 djm 780: buffer_free(&msg);
781:
1.93 ! djm 782: status = get_status(conn, id);
1.1 djm 783: if (status != SSH2_FX_OK)
1.23 djm 784: error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath,
785: newpath, fx2txt(status));
1.1 djm 786:
787: return(status);
1.11 djm 788: }
789:
790: int
1.23 djm 791: do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath)
1.11 djm 792: {
793: Buffer msg;
794: u_int status, id;
795:
1.23 djm 796: if (conn->version < 3) {
797: error("This server does not support the symlink operation");
798: return(SSH2_FX_OP_UNSUPPORTED);
799: }
800:
1.11 djm 801: buffer_init(&msg);
802:
1.48 djm 803: /* Send symlink request */
1.23 djm 804: id = conn->msg_id++;
1.11 djm 805: buffer_put_char(&msg, SSH2_FXP_SYMLINK);
806: buffer_put_int(&msg, id);
807: buffer_put_cstring(&msg, oldpath);
808: buffer_put_cstring(&msg, newpath);
1.93 ! djm 809: send_msg(conn, &msg);
1.11 djm 810: debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath,
811: newpath);
812: buffer_free(&msg);
813:
1.93 ! djm 814: status = get_status(conn, id);
1.11 djm 815: if (status != SSH2_FX_OK)
1.36 markus 816: error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath,
1.23 djm 817: newpath, fx2txt(status));
1.11 djm 818:
819: return(status);
820: }
821:
1.78 chl 822: #ifdef notyet
1.11 djm 823: char *
1.23 djm 824: do_readlink(struct sftp_conn *conn, char *path)
1.11 djm 825: {
826: Buffer msg;
827: u_int type, expected_id, count, id;
828: char *filename, *longname;
829: Attrib *a;
830:
1.23 djm 831: expected_id = id = conn->msg_id++;
1.93 ! djm 832: send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path));
1.11 djm 833:
834: buffer_init(&msg);
835:
1.93 ! djm 836: get_msg(conn, &msg);
1.11 djm 837: type = buffer_get_char(&msg);
838: id = buffer_get_int(&msg);
839:
840: if (id != expected_id)
1.33 deraadt 841: fatal("ID mismatch (%u != %u)", id, expected_id);
1.11 djm 842:
843: if (type == SSH2_FXP_STATUS) {
844: u_int status = buffer_get_int(&msg);
845:
846: error("Couldn't readlink: %s", fx2txt(status));
847: return(NULL);
848: } else if (type != SSH2_FXP_NAME)
1.33 deraadt 849: fatal("Expected SSH2_FXP_NAME(%u) packet, got %u",
1.11 djm 850: SSH2_FXP_NAME, type);
851:
852: count = buffer_get_int(&msg);
853: if (count != 1)
854: fatal("Got multiple names (%d) from SSH_FXP_READLINK", count);
855:
856: filename = buffer_get_string(&msg, NULL);
857: longname = buffer_get_string(&msg, NULL);
858: a = decode_attrib(&msg);
859:
860: debug3("SSH_FXP_READLINK %s -> %s", path, filename);
861:
862: xfree(longname);
863:
864: buffer_free(&msg);
865:
866: return(filename);
1.82 djm 867: }
868: #endif
869:
870: int
1.84 dtucker 871: do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st,
1.82 djm 872: int quiet)
873: {
874: Buffer msg;
875: u_int id;
876:
877: if ((conn->exts & SFTP_EXT_STATVFS) == 0) {
878: error("Server does not support statvfs@openssh.com extension");
879: return -1;
880: }
881:
882: id = conn->msg_id++;
883:
884: buffer_init(&msg);
885: buffer_clear(&msg);
886: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
887: buffer_put_int(&msg, id);
888: buffer_put_cstring(&msg, "statvfs@openssh.com");
889: buffer_put_cstring(&msg, path);
1.93 ! djm 890: send_msg(conn, &msg);
1.82 djm 891: buffer_free(&msg);
892:
1.93 ! djm 893: return get_decode_statvfs(conn, st, id, quiet);
1.82 djm 894: }
895:
896: #ifdef notyet
897: int
898: do_fstatvfs(struct sftp_conn *conn, const char *handle, u_int handle_len,
1.84 dtucker 899: struct sftp_statvfs *st, int quiet)
1.82 djm 900: {
901: Buffer msg;
902: u_int id;
903:
904: if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) {
905: error("Server does not support fstatvfs@openssh.com extension");
906: return -1;
907: }
908:
909: id = conn->msg_id++;
910:
911: buffer_init(&msg);
912: buffer_clear(&msg);
913: buffer_put_char(&msg, SSH2_FXP_EXTENDED);
914: buffer_put_int(&msg, id);
915: buffer_put_cstring(&msg, "fstatvfs@openssh.com");
916: buffer_put_string(&msg, handle, handle_len);
1.93 ! djm 917: send_msg(conn, &msg);
1.82 djm 918: buffer_free(&msg);
919:
1.93 ! djm 920: return get_decode_statvfs(conn, st, id, quiet);
1.1 djm 921: }
1.78 chl 922: #endif
1.1 djm 923:
1.21 djm 924: static void
1.93 ! djm 925: send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset,
! 926: u_int len, char *handle, u_int handle_len)
1.21 djm 927: {
928: Buffer msg;
1.28 markus 929:
1.21 djm 930: buffer_init(&msg);
931: buffer_clear(&msg);
932: buffer_put_char(&msg, SSH2_FXP_READ);
933: buffer_put_int(&msg, id);
934: buffer_put_string(&msg, handle, handle_len);
935: buffer_put_int64(&msg, offset);
936: buffer_put_int(&msg, len);
1.93 ! djm 937: send_msg(conn, &msg);
1.21 djm 938: buffer_free(&msg);
1.28 markus 939: }
1.21 djm 940:
1.1 djm 941: int
1.23 djm 942: do_download(struct sftp_conn *conn, char *remote_path, char *local_path,
1.89 djm 943: Attrib *a, int pflag)
1.1 djm 944: {
1.89 djm 945: Attrib junk;
1.21 djm 946: Buffer msg;
1.1 djm 947: char *handle;
1.57 dtucker 948: int local_fd, status = 0, write_error;
1.21 djm 949: int read_error, write_errno;
950: u_int64_t offset, size;
1.55 djm 951: u_int handle_len, mode, type, id, buflen, num_req, max_req;
1.39 fgsch 952: off_t progress_counter;
1.21 djm 953: struct request {
954: u_int id;
955: u_int len;
956: u_int64_t offset;
1.28 markus 957: TAILQ_ENTRY(request) tq;
1.21 djm 958: };
959: TAILQ_HEAD(reqhead, request) requests;
960: struct request *req;
961:
962: TAILQ_INIT(&requests);
1.1 djm 963:
1.89 djm 964: if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL)
965: return -1;
1.1 djm 966:
1.86 djm 967: /* Do not preserve set[ug]id here, as we do not preserve ownership */
1.1 djm 968: if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1.38 djm 969: mode = a->perm & 0777;
1.1 djm 970: else
971: mode = 0666;
972:
1.14 djm 973: if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) &&
1.41 djm 974: (!S_ISREG(a->perm))) {
975: error("Cannot download non-regular file: %s", remote_path);
1.14 djm 976: return(-1);
977: }
978:
1.21 djm 979: if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
980: size = a->size;
981: else
982: size = 0;
983:
1.23 djm 984: buflen = conn->transfer_buflen;
1.1 djm 985: buffer_init(&msg);
986:
987: /* Send open request */
1.23 djm 988: id = conn->msg_id++;
1.1 djm 989: buffer_put_char(&msg, SSH2_FXP_OPEN);
990: buffer_put_int(&msg, id);
991: buffer_put_cstring(&msg, remote_path);
992: buffer_put_int(&msg, SSH2_FXF_READ);
993: attrib_clear(&junk); /* Send empty attributes */
994: encode_attrib(&msg, &junk);
1.93 ! djm 995: send_msg(conn, &msg);
1.33 deraadt 996: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 997:
1.93 ! djm 998: handle = get_handle(conn, id, &handle_len,
1.88 djm 999: "remote open(\"%s\")", remote_path);
1.1 djm 1000: if (handle == NULL) {
1001: buffer_free(&msg);
1002: return(-1);
1003: }
1004:
1.45 djm 1005: local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC,
1.38 djm 1006: mode | S_IWRITE);
1.23 djm 1007: if (local_fd == -1) {
1008: error("Couldn't open local file \"%s\" for writing: %s",
1009: local_path, strerror(errno));
1.79 djm 1010: do_close(conn, handle, handle_len);
1.24 markus 1011: buffer_free(&msg);
1012: xfree(handle);
1.23 djm 1013: return(-1);
1014: }
1015:
1.1 djm 1016: /* Read from remote and write to local */
1.21 djm 1017: write_error = read_error = write_errno = num_req = offset = 0;
1018: max_req = 1;
1.39 fgsch 1019: progress_counter = 0;
1020:
1.47 djm 1021: if (showprogress && size != 0)
1022: start_progress_meter(remote_path, size, &progress_counter);
1.39 fgsch 1023:
1.21 djm 1024: while (num_req > 0 || max_req > 0) {
1025: char *data;
1.1 djm 1026: u_int len;
1027:
1.49 djm 1028: /*
1.51 deraadt 1029: * Simulate EOF on interrupt: stop sending new requests and
1.49 djm 1030: * allow outstanding requests to drain gracefully
1031: */
1032: if (interrupted) {
1033: if (num_req == 0) /* If we haven't started yet... */
1034: break;
1035: max_req = 0;
1036: }
1037:
1.21 djm 1038: /* Send some more requests */
1039: while (num_req < max_req) {
1.28 markus 1040: debug3("Request range %llu -> %llu (%d/%d)",
1.25 itojun 1041: (unsigned long long)offset,
1042: (unsigned long long)offset + buflen - 1,
1043: num_req, max_req);
1.21 djm 1044: req = xmalloc(sizeof(*req));
1.23 djm 1045: req->id = conn->msg_id++;
1.21 djm 1046: req->len = buflen;
1047: req->offset = offset;
1048: offset += buflen;
1049: num_req++;
1050: TAILQ_INSERT_TAIL(&requests, req, tq);
1.93 ! djm 1051: send_read_request(conn, req->id, req->offset,
1.21 djm 1052: req->len, handle, handle_len);
1053: }
1.1 djm 1054:
1055: buffer_clear(&msg);
1.93 ! djm 1056: get_msg(conn, &msg);
1.1 djm 1057: type = buffer_get_char(&msg);
1058: id = buffer_get_int(&msg);
1.33 deraadt 1059: debug3("Received reply T:%u I:%u R:%d", type, id, max_req);
1.21 djm 1060:
1061: /* Find the request in our queue */
1.53 deraadt 1062: for (req = TAILQ_FIRST(&requests);
1.21 djm 1063: req != NULL && req->id != id;
1064: req = TAILQ_NEXT(req, tq))
1065: ;
1066: if (req == NULL)
1067: fatal("Unexpected reply %u", id);
1068:
1069: switch (type) {
1070: case SSH2_FXP_STATUS:
1.5 djm 1071: status = buffer_get_int(&msg);
1.21 djm 1072: if (status != SSH2_FX_EOF)
1073: read_error = 1;
1074: max_req = 0;
1075: TAILQ_REMOVE(&requests, req, tq);
1076: xfree(req);
1077: num_req--;
1078: break;
1079: case SSH2_FXP_DATA:
1080: data = buffer_get_string(&msg, &len);
1.26 itojun 1081: debug3("Received data %llu -> %llu",
1.28 markus 1082: (unsigned long long)req->offset,
1.26 itojun 1083: (unsigned long long)req->offset + len - 1);
1.21 djm 1084: if (len > req->len)
1085: fatal("Received more data than asked for "
1.37 deraadt 1086: "%u > %u", len, req->len);
1.21 djm 1087: if ((lseek(local_fd, req->offset, SEEK_SET) == -1 ||
1.44 deraadt 1088: atomicio(vwrite, local_fd, data, len) != len) &&
1.21 djm 1089: !write_error) {
1090: write_errno = errno;
1091: write_error = 1;
1092: max_req = 0;
1093: }
1.39 fgsch 1094: progress_counter += len;
1.21 djm 1095: xfree(data);
1.1 djm 1096:
1.21 djm 1097: if (len == req->len) {
1098: TAILQ_REMOVE(&requests, req, tq);
1099: xfree(req);
1100: num_req--;
1101: } else {
1102: /* Resend the request for the missing data */
1103: debug3("Short data block, re-requesting "
1.26 itojun 1104: "%llu -> %llu (%2d)",
1.28 markus 1105: (unsigned long long)req->offset + len,
1.27 itojun 1106: (unsigned long long)req->offset +
1107: req->len - 1, num_req);
1.23 djm 1108: req->id = conn->msg_id++;
1.21 djm 1109: req->len -= len;
1110: req->offset += len;
1.93 ! djm 1111: send_read_request(conn, req->id,
1.23 djm 1112: req->offset, req->len, handle, handle_len);
1.21 djm 1113: /* Reduce the request size */
1114: if (len < buflen)
1115: buflen = MAX(MIN_READ_SIZE, len);
1116: }
1117: if (max_req > 0) { /* max_req = 0 iff EOF received */
1118: if (size > 0 && offset > size) {
1119: /* Only one request at a time
1120: * after the expected EOF */
1121: debug3("Finish at %llu (%2d)",
1.26 itojun 1122: (unsigned long long)offset,
1123: num_req);
1.21 djm 1124: max_req = 1;
1.49 djm 1125: } else if (max_req <= conn->num_requests) {
1.21 djm 1126: ++max_req;
1127: }
1.1 djm 1128: }
1.21 djm 1129: break;
1130: default:
1.33 deraadt 1131: fatal("Expected SSH2_FXP_DATA(%u) packet, got %u",
1.1 djm 1132: SSH2_FXP_DATA, type);
1133: }
1.21 djm 1134: }
1.1 djm 1135:
1.39 fgsch 1136: if (showprogress && size)
1137: stop_progress_meter();
1138:
1.21 djm 1139: /* Sanity check */
1140: if (TAILQ_FIRST(&requests) != NULL)
1141: fatal("Transfer complete, but requests still in queue");
1142:
1143: if (read_error) {
1.28 markus 1144: error("Couldn't read from remote file \"%s\" : %s",
1.21 djm 1145: remote_path, fx2txt(status));
1.23 djm 1146: do_close(conn, handle, handle_len);
1.21 djm 1147: } else if (write_error) {
1148: error("Couldn't write to \"%s\": %s", local_path,
1149: strerror(write_errno));
1150: status = -1;
1.23 djm 1151: do_close(conn, handle, handle_len);
1.21 djm 1152: } else {
1.23 djm 1153: status = do_close(conn, handle, handle_len);
1.21 djm 1154:
1155: /* Override umask and utimes if asked */
1156: if (pflag && fchmod(local_fd, mode) == -1)
1157: error("Couldn't set mode on \"%s\": %s", local_path,
1.37 deraadt 1158: strerror(errno));
1.21 djm 1159: if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) {
1160: struct timeval tv[2];
1161: tv[0].tv_sec = a->atime;
1162: tv[1].tv_sec = a->mtime;
1163: tv[0].tv_usec = tv[1].tv_usec = 0;
1164: if (utimes(local_path, tv) == -1)
1165: error("Can't set times on \"%s\": %s",
1.37 deraadt 1166: local_path, strerror(errno));
1.1 djm 1167: }
1.10 djm 1168: }
1.5 djm 1169: close(local_fd);
1170: buffer_free(&msg);
1.1 djm 1171: xfree(handle);
1.23 djm 1172:
1173: return(status);
1.1 djm 1174: }
1175:
1.89 djm 1176: static int
1177: download_dir_internal(struct sftp_conn *conn, char *src, char *dst,
1178: Attrib *dirattrib, int pflag, int printflag, int depth)
1179: {
1180: int i, ret = 0;
1181: SFTP_DIRENT **dir_entries;
1182: char *filename, *new_src, *new_dst;
1183: mode_t mode = 0777;
1184:
1185: if (depth >= MAX_DIR_DEPTH) {
1186: error("Maximum directory depth exceeded: %d levels", depth);
1187: return -1;
1188: }
1189:
1190: if (dirattrib == NULL &&
1191: (dirattrib = do_stat(conn, src, 1)) == NULL) {
1192: error("Unable to stat remote directory \"%s\"", src);
1193: return -1;
1194: }
1195: if (!S_ISDIR(dirattrib->perm)) {
1196: error("\"%s\" is not a directory", src);
1197: return -1;
1198: }
1199: if (printflag)
1200: printf("Retrieving %s\n", src);
1201:
1202: if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
1203: mode = dirattrib->perm & 01777;
1204: else {
1205: debug("Server did not send permissions for "
1206: "directory \"%s\"", dst);
1207: }
1208:
1209: if (mkdir(dst, mode) == -1 && errno != EEXIST) {
1210: error("mkdir %s: %s", dst, strerror(errno));
1211: return -1;
1212: }
1213:
1214: if (do_readdir(conn, src, &dir_entries) == -1) {
1215: error("%s: Failed to get directory contents", src);
1216: return -1;
1217: }
1218:
1219: for (i = 0; dir_entries[i] != NULL && !interrupted; i++) {
1220: filename = dir_entries[i]->filename;
1221:
1222: new_dst = path_append(dst, filename);
1223: new_src = path_append(src, filename);
1224:
1225: if (S_ISDIR(dir_entries[i]->a.perm)) {
1226: if (strcmp(filename, ".") == 0 ||
1227: strcmp(filename, "..") == 0)
1228: continue;
1229: if (download_dir_internal(conn, new_src, new_dst,
1230: &(dir_entries[i]->a), pflag, printflag,
1231: depth + 1) == -1)
1232: ret = -1;
1233: } else if (S_ISREG(dir_entries[i]->a.perm) ) {
1234: if (do_download(conn, new_src, new_dst,
1235: &(dir_entries[i]->a), pflag) == -1) {
1236: error("Download of file %s to %s failed",
1237: new_src, new_dst);
1238: ret = -1;
1239: }
1240: } else
1241: logit("%s: not a regular file\n", new_src);
1242:
1243: xfree(new_dst);
1244: xfree(new_src);
1245: }
1246:
1247: if (pflag) {
1248: if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
1249: struct timeval tv[2];
1250: tv[0].tv_sec = dirattrib->atime;
1251: tv[1].tv_sec = dirattrib->mtime;
1252: tv[0].tv_usec = tv[1].tv_usec = 0;
1253: if (utimes(dst, tv) == -1)
1254: error("Can't set times on \"%s\": %s",
1255: dst, strerror(errno));
1256: } else
1257: debug("Server did not send times for directory "
1258: "\"%s\"", dst);
1259: }
1260:
1261: free_sftp_dirents(dir_entries);
1262:
1263: return ret;
1264: }
1265:
1266: int
1267: download_dir(struct sftp_conn *conn, char *src, char *dst,
1268: Attrib *dirattrib, int pflag, int printflag)
1269: {
1270: char *src_canon;
1271: int ret;
1272:
1273: if ((src_canon = do_realpath(conn, src)) == NULL) {
1274: error("Unable to canonicalise path \"%s\"", src);
1275: return -1;
1276: }
1277:
1278: ret = download_dir_internal(conn, src_canon, dst,
1279: dirattrib, pflag, printflag, 0);
1280: xfree(src_canon);
1281: return ret;
1282: }
1283:
1.1 djm 1284: int
1.23 djm 1285: do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
1286: int pflag)
1.1 djm 1287: {
1.80 djm 1288: int local_fd;
1289: int status = SSH2_FX_OK;
1.22 djm 1290: u_int handle_len, id, type;
1.77 djm 1291: off_t offset;
1.20 djm 1292: char *handle, *data;
1.1 djm 1293: Buffer msg;
1294: struct stat sb;
1295: Attrib a;
1.21 djm 1296: u_int32_t startid;
1297: u_int32_t ackid;
1.22 djm 1298: struct outstanding_ack {
1299: u_int id;
1300: u_int len;
1.77 djm 1301: off_t offset;
1.28 markus 1302: TAILQ_ENTRY(outstanding_ack) tq;
1.22 djm 1303: };
1304: TAILQ_HEAD(ackhead, outstanding_ack) acks;
1.50 pedro 1305: struct outstanding_ack *ack = NULL;
1.22 djm 1306:
1307: TAILQ_INIT(&acks);
1.1 djm 1308:
1309: if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) {
1310: error("Couldn't open local file \"%s\" for reading: %s",
1311: local_path, strerror(errno));
1312: return(-1);
1313: }
1314: if (fstat(local_fd, &sb) == -1) {
1315: error("Couldn't fstat local file \"%s\": %s",
1316: local_path, strerror(errno));
1.41 djm 1317: close(local_fd);
1318: return(-1);
1319: }
1320: if (!S_ISREG(sb.st_mode)) {
1321: error("%s is not a regular file", local_path);
1.1 djm 1322: close(local_fd);
1323: return(-1);
1324: }
1325: stat_to_attrib(&sb, &a);
1326:
1327: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1328: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1329: a.perm &= 0777;
1330: if (!pflag)
1331: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1332:
1333: buffer_init(&msg);
1334:
1335: /* Send open request */
1.23 djm 1336: id = conn->msg_id++;
1.1 djm 1337: buffer_put_char(&msg, SSH2_FXP_OPEN);
1338: buffer_put_int(&msg, id);
1339: buffer_put_cstring(&msg, remote_path);
1340: buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC);
1341: encode_attrib(&msg, &a);
1.93 ! djm 1342: send_msg(conn, &msg);
1.33 deraadt 1343: debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path);
1.1 djm 1344:
1345: buffer_clear(&msg);
1346:
1.93 ! djm 1347: handle = get_handle(conn, id, &handle_len,
1.88 djm 1348: "remote open(\"%s\")", remote_path);
1.1 djm 1349: if (handle == NULL) {
1350: close(local_fd);
1351: buffer_free(&msg);
1.80 djm 1352: return -1;
1.1 djm 1353: }
1354:
1.21 djm 1355: startid = ackid = id + 1;
1.23 djm 1356: data = xmalloc(conn->transfer_buflen);
1.20 djm 1357:
1.1 djm 1358: /* Read from local and write to remote */
1359: offset = 0;
1.39 fgsch 1360: if (showprogress)
1361: start_progress_meter(local_path, sb.st_size, &offset);
1362:
1.19 deraadt 1363: for (;;) {
1.1 djm 1364: int len;
1365:
1366: /*
1.51 deraadt 1367: * Can't use atomicio here because it returns 0 on EOF,
1.49 djm 1368: * thus losing the last block of the file.
1.51 deraadt 1369: * Simulate an EOF on interrupt, allowing ACKs from the
1.49 djm 1370: * server to drain.
1.1 djm 1371: */
1.80 djm 1372: if (interrupted || status != SSH2_FX_OK)
1.49 djm 1373: len = 0;
1374: else do
1.23 djm 1375: len = read(local_fd, data, conn->transfer_buflen);
1.1 djm 1376: while ((len == -1) && (errno == EINTR || errno == EAGAIN));
1377:
1378: if (len == -1)
1379: fatal("Couldn't read from \"%s\": %s", local_path,
1380: strerror(errno));
1.21 djm 1381:
1382: if (len != 0) {
1.22 djm 1383: ack = xmalloc(sizeof(*ack));
1384: ack->id = ++id;
1385: ack->offset = offset;
1386: ack->len = len;
1387: TAILQ_INSERT_TAIL(&acks, ack, tq);
1388:
1.21 djm 1389: buffer_clear(&msg);
1390: buffer_put_char(&msg, SSH2_FXP_WRITE);
1.22 djm 1391: buffer_put_int(&msg, ack->id);
1.21 djm 1392: buffer_put_string(&msg, handle, handle_len);
1393: buffer_put_int64(&msg, offset);
1394: buffer_put_string(&msg, data, len);
1.93 ! djm 1395: send_msg(conn, &msg);
1.33 deraadt 1396: debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u",
1.37 deraadt 1397: id, (unsigned long long)offset, len);
1.22 djm 1398: } else if (TAILQ_FIRST(&acks) == NULL)
1.1 djm 1399: break;
1400:
1.22 djm 1401: if (ack == NULL)
1402: fatal("Unexpected ACK %u", id);
1403:
1.28 markus 1404: if (id == startid || len == 0 ||
1.23 djm 1405: id - ackid >= conn->num_requests) {
1.32 markus 1406: u_int r_id;
1.31 djm 1407:
1.22 djm 1408: buffer_clear(&msg);
1.93 ! djm 1409: get_msg(conn, &msg);
1.22 djm 1410: type = buffer_get_char(&msg);
1.31 djm 1411: r_id = buffer_get_int(&msg);
1.22 djm 1412:
1413: if (type != SSH2_FXP_STATUS)
1414: fatal("Expected SSH2_FXP_STATUS(%d) packet, "
1415: "got %d", SSH2_FXP_STATUS, type);
1416:
1417: status = buffer_get_int(&msg);
1418: debug3("SSH2_FXP_STATUS %d", status);
1419:
1420: /* Find the request in our queue */
1.53 deraadt 1421: for (ack = TAILQ_FIRST(&acks);
1.31 djm 1422: ack != NULL && ack->id != r_id;
1.22 djm 1423: ack = TAILQ_NEXT(ack, tq))
1424: ;
1425: if (ack == NULL)
1.33 deraadt 1426: fatal("Can't find request for ID %u", r_id);
1.22 djm 1427: TAILQ_REMOVE(&acks, ack, tq);
1.77 djm 1428: debug3("In write loop, ack for %u %u bytes at %lld",
1429: ack->id, ack->len, (long long)ack->offset);
1.21 djm 1430: ++ackid;
1.34 deraadt 1431: xfree(ack);
1.1 djm 1432: }
1433: offset += len;
1.77 djm 1434: if (offset < 0)
1435: fatal("%s: offset < 0", __func__);
1.1 djm 1436: }
1.80 djm 1437: buffer_free(&msg);
1438:
1.39 fgsch 1439: if (showprogress)
1440: stop_progress_meter();
1.20 djm 1441: xfree(data);
1.1 djm 1442:
1.80 djm 1443: if (status != SSH2_FX_OK) {
1444: error("Couldn't write to remote file \"%s\": %s",
1445: remote_path, fx2txt(status));
1446: status = -1;
1447: }
1448:
1.1 djm 1449: if (close(local_fd) == -1) {
1450: error("Couldn't close local file \"%s\": %s", local_path,
1451: strerror(errno));
1.5 djm 1452: status = -1;
1.1 djm 1453: }
1454:
1.10 djm 1455: /* Override umask and utimes if asked */
1456: if (pflag)
1.23 djm 1457: do_fsetstat(conn, handle, handle_len, &a);
1.10 djm 1458:
1.80 djm 1459: if (do_close(conn, handle, handle_len) != SSH2_FX_OK)
1460: status = -1;
1461: xfree(handle);
1.5 djm 1462:
1.80 djm 1463: return status;
1.1 djm 1464: }
1.89 djm 1465:
1466: static int
1467: upload_dir_internal(struct sftp_conn *conn, char *src, char *dst,
1468: int pflag, int printflag, int depth)
1469: {
1470: int ret = 0, status;
1471: DIR *dirp;
1472: struct dirent *dp;
1473: char *filename, *new_src, *new_dst;
1474: struct stat sb;
1475: Attrib a;
1476:
1477: if (depth >= MAX_DIR_DEPTH) {
1478: error("Maximum directory depth exceeded: %d levels", depth);
1479: return -1;
1480: }
1481:
1482: if (stat(src, &sb) == -1) {
1483: error("Couldn't stat directory \"%s\": %s",
1484: src, strerror(errno));
1485: return -1;
1486: }
1487: if (!S_ISDIR(sb.st_mode)) {
1488: error("\"%s\" is not a directory", src);
1489: return -1;
1490: }
1491: if (printflag)
1492: printf("Entering %s\n", src);
1493:
1494: attrib_clear(&a);
1495: stat_to_attrib(&sb, &a);
1496: a.flags &= ~SSH2_FILEXFER_ATTR_SIZE;
1497: a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID;
1498: a.perm &= 01777;
1499: if (!pflag)
1500: a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME;
1501:
1502: status = do_mkdir(conn, dst, &a, 0);
1503: /*
1504: * we lack a portable status for errno EEXIST,
1505: * so if we get a SSH2_FX_FAILURE back we must check
1506: * if it was created successfully.
1507: */
1508: if (status != SSH2_FX_OK) {
1509: if (status != SSH2_FX_FAILURE)
1510: return -1;
1511: if (do_stat(conn, dst, 0) == NULL)
1512: return -1;
1513: }
1514:
1515: if ((dirp = opendir(src)) == NULL) {
1516: error("Failed to open dir \"%s\": %s", src, strerror(errno));
1517: return -1;
1518: }
1519:
1520: while (((dp = readdir(dirp)) != NULL) && !interrupted) {
1521: if (dp->d_ino == 0)
1522: continue;
1523: filename = dp->d_name;
1524: new_dst = path_append(dst, filename);
1525: new_src = path_append(src, filename);
1526:
1.90 dtucker 1527: if (lstat(new_src, &sb) == -1) {
1528: logit("%s: lstat failed: %s", filename,
1529: strerror(errno));
1530: ret = -1;
1531: } else if (S_ISDIR(sb.st_mode)) {
1.89 djm 1532: if (strcmp(filename, ".") == 0 ||
1533: strcmp(filename, "..") == 0)
1534: continue;
1535:
1536: if (upload_dir_internal(conn, new_src, new_dst,
1.92 djm 1537: pflag, printflag, depth + 1) == -1)
1.89 djm 1538: ret = -1;
1.90 dtucker 1539: } else if (S_ISREG(sb.st_mode)) {
1.89 djm 1540: if (do_upload(conn, new_src, new_dst, pflag) == -1) {
1541: error("Uploading of file %s to %s failed!",
1542: new_src, new_dst);
1543: ret = -1;
1544: }
1545: } else
1546: logit("%s: not a regular file\n", filename);
1547: xfree(new_dst);
1548: xfree(new_src);
1549: }
1550:
1551: do_setstat(conn, dst, &a);
1552:
1553: (void) closedir(dirp);
1554: return ret;
1555: }
1556:
1557: int
1558: upload_dir(struct sftp_conn *conn, char *src, char *dst, int printflag,
1559: int pflag)
1560: {
1561: char *dst_canon;
1562: int ret;
1563:
1564: if ((dst_canon = do_realpath(conn, dst)) == NULL) {
1565: error("Unable to canonicalise path \"%s\"", dst);
1566: return -1;
1567: }
1568:
1569: ret = upload_dir_internal(conn, src, dst_canon, pflag, printflag, 0);
1570: xfree(dst_canon);
1571: return ret;
1572: }
1573:
1574: char *
1575: path_append(char *p1, char *p2)
1576: {
1577: char *ret;
1578: size_t len = strlen(p1) + strlen(p2) + 2;
1579:
1580: ret = xmalloc(len);
1581: strlcpy(ret, p1, len);
1582: if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/')
1583: strlcat(ret, "/", len);
1584: strlcat(ret, p2, len);
1585:
1586: return(ret);
1587: }
1588:
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