1 /* $OpenBSD: sftp-client.c,v 1.97 2012/07/02 12:13:26 dtucker Exp $ */ 2 /* 3 * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org> 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 #include <sys/param.h> 27 #ifdef HAVE_SYS_STATVFS_H 28 #include <sys/statvfs.h> 29 #endif 30 #include "openbsd-compat/sys-queue.h" 31 #ifdef HAVE_SYS_STAT_H 32 # include <sys/stat.h> 33 #endif 34 #ifdef HAVE_SYS_TIME_H 35 # include <sys/time.h> 36 #endif 37 #include <sys/uio.h> 38 39 #include <dirent.h> 40 #include <errno.h> 41 #include <fcntl.h> 42 #include <signal.h> 43 #include <stdarg.h> 44 #include <stdio.h> 45 #include <string.h> 46 #include <unistd.h> 47 48 #include "xmalloc.h" 49 #include "buffer.h" 50 #include "log.h" 51 #include "atomicio.h" 52 #include "progressmeter.h" 53 #include "misc.h" 54 55 #include "sftp.h" 56 #include "sftp-common.h" 57 #include "sftp-client.h" 58 59 extern volatile sig_atomic_t interrupted; 60 extern int showprogress; 61 62 /* Minimum amount of data to read at a time */ 63 #define MIN_READ_SIZE 512 64 65 /* Maximum depth to descend in directory trees */ 66 #define MAX_DIR_DEPTH 64 67 68 struct sftp_conn { 69 int fd_in; 70 int fd_out; 71 u_int transfer_buflen; 72 u_int num_requests; 73 u_int version; 74 u_int msg_id; 75 #define SFTP_EXT_POSIX_RENAME 0x00000001 76 #define SFTP_EXT_STATVFS 0x00000002 77 #define SFTP_EXT_FSTATVFS 0x00000004 78 #define SFTP_EXT_HARDLINK 0x00000008 79 u_int exts; 80 u_int64_t limit_kbps; 81 struct bwlimit bwlimit_in, bwlimit_out; 82 }; 83 84 static char * 85 get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len, 86 const char *errfmt, ...) __attribute__((format(printf, 4, 5))); 87 88 /* ARGSUSED */ 89 static int 90 sftpio(void *_bwlimit, size_t amount) 91 { 92 struct bwlimit *bwlimit = (struct bwlimit *)_bwlimit; 93 94 bandwidth_limit(bwlimit, amount); 95 return 0; 96 } 97 98 static void 99 send_msg(struct sftp_conn *conn, Buffer *m) 100 { 101 u_char mlen[4]; 102 struct iovec iov[2]; 103 104 if (buffer_len(m) > SFTP_MAX_MSG_LENGTH) 105 fatal("Outbound message too long %u", buffer_len(m)); 106 107 /* Send length first */ 108 put_u32(mlen, buffer_len(m)); 109 iov[0].iov_base = mlen; 110 iov[0].iov_len = sizeof(mlen); 111 iov[1].iov_base = buffer_ptr(m); 112 iov[1].iov_len = buffer_len(m); 113 114 if (atomiciov6(writev, conn->fd_out, iov, 2, 115 conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_out) != 116 buffer_len(m) + sizeof(mlen)) 117 fatal("Couldn't send packet: %s", strerror(errno)); 118 119 buffer_clear(m); 120 } 121 122 static void 123 get_msg(struct sftp_conn *conn, Buffer *m) 124 { 125 u_int msg_len; 126 127 buffer_append_space(m, 4); 128 if (atomicio6(read, conn->fd_in, buffer_ptr(m), 4, 129 conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in) != 4) { 130 if (errno == EPIPE) 131 fatal("Connection closed"); 132 else 133 fatal("Couldn't read packet: %s", strerror(errno)); 134 } 135 136 msg_len = buffer_get_int(m); 137 if (msg_len > SFTP_MAX_MSG_LENGTH) 138 fatal("Received message too long %u", msg_len); 139 140 buffer_append_space(m, msg_len); 141 if (atomicio6(read, conn->fd_in, buffer_ptr(m), msg_len, 142 conn->limit_kbps > 0 ? sftpio : NULL, &conn->bwlimit_in) 143 != msg_len) { 144 if (errno == EPIPE) 145 fatal("Connection closed"); 146 else 147 fatal("Read packet: %s", strerror(errno)); 148 } 149 } 150 151 static void 152 send_string_request(struct sftp_conn *conn, u_int id, u_int code, char *s, 153 u_int len) 154 { 155 Buffer msg; 156 157 buffer_init(&msg); 158 buffer_put_char(&msg, code); 159 buffer_put_int(&msg, id); 160 buffer_put_string(&msg, s, len); 161 send_msg(conn, &msg); 162 debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id); 163 buffer_free(&msg); 164 } 165 166 static void 167 send_string_attrs_request(struct sftp_conn *conn, u_int id, u_int code, 168 char *s, u_int len, Attrib *a) 169 { 170 Buffer msg; 171 172 buffer_init(&msg); 173 buffer_put_char(&msg, code); 174 buffer_put_int(&msg, id); 175 buffer_put_string(&msg, s, len); 176 encode_attrib(&msg, a); 177 send_msg(conn, &msg); 178 debug3("Sent message fd %d T:%u I:%u", conn->fd_out, code, id); 179 buffer_free(&msg); 180 } 181 182 static u_int 183 get_status(struct sftp_conn *conn, u_int expected_id) 184 { 185 Buffer msg; 186 u_int type, id, status; 187 188 buffer_init(&msg); 189 get_msg(conn, &msg); 190 type = buffer_get_char(&msg); 191 id = buffer_get_int(&msg); 192 193 if (id != expected_id) 194 fatal("ID mismatch (%u != %u)", id, expected_id); 195 if (type != SSH2_FXP_STATUS) 196 fatal("Expected SSH2_FXP_STATUS(%u) packet, got %u", 197 SSH2_FXP_STATUS, type); 198 199 status = buffer_get_int(&msg); 200 buffer_free(&msg); 201 202 debug3("SSH2_FXP_STATUS %u", status); 203 204 return status; 205 } 206 207 static char * 208 get_handle(struct sftp_conn *conn, u_int expected_id, u_int *len, 209 const char *errfmt, ...) 210 { 211 Buffer msg; 212 u_int type, id; 213 char *handle, errmsg[256]; 214 va_list args; 215 int status; 216 217 va_start(args, errfmt); 218 if (errfmt != NULL) 219 vsnprintf(errmsg, sizeof(errmsg), errfmt, args); 220 va_end(args); 221 222 buffer_init(&msg); 223 get_msg(conn, &msg); 224 type = buffer_get_char(&msg); 225 id = buffer_get_int(&msg); 226 227 if (id != expected_id) 228 fatal("%s: ID mismatch (%u != %u)", 229 errfmt == NULL ? __func__ : errmsg, id, expected_id); 230 if (type == SSH2_FXP_STATUS) { 231 status = buffer_get_int(&msg); 232 if (errfmt != NULL) 233 error("%s: %s", errmsg, fx2txt(status)); 234 buffer_free(&msg); 235 return(NULL); 236 } else if (type != SSH2_FXP_HANDLE) 237 fatal("%s: Expected SSH2_FXP_HANDLE(%u) packet, got %u", 238 errfmt == NULL ? __func__ : errmsg, SSH2_FXP_HANDLE, type); 239 240 handle = buffer_get_string(&msg, len); 241 buffer_free(&msg); 242 243 return(handle); 244 } 245 246 static Attrib * 247 get_decode_stat(struct sftp_conn *conn, u_int expected_id, int quiet) 248 { 249 Buffer msg; 250 u_int type, id; 251 Attrib *a; 252 253 buffer_init(&msg); 254 get_msg(conn, &msg); 255 256 type = buffer_get_char(&msg); 257 id = buffer_get_int(&msg); 258 259 debug3("Received stat reply T:%u I:%u", type, id); 260 if (id != expected_id) 261 fatal("ID mismatch (%u != %u)", id, expected_id); 262 if (type == SSH2_FXP_STATUS) { 263 int status = buffer_get_int(&msg); 264 265 if (quiet) 266 debug("Couldn't stat remote file: %s", fx2txt(status)); 267 else 268 error("Couldn't stat remote file: %s", fx2txt(status)); 269 buffer_free(&msg); 270 return(NULL); 271 } else if (type != SSH2_FXP_ATTRS) { 272 fatal("Expected SSH2_FXP_ATTRS(%u) packet, got %u", 273 SSH2_FXP_ATTRS, type); 274 } 275 a = decode_attrib(&msg); 276 buffer_free(&msg); 277 278 return(a); 279 } 280 281 static int 282 get_decode_statvfs(struct sftp_conn *conn, struct sftp_statvfs *st, 283 u_int expected_id, int quiet) 284 { 285 Buffer msg; 286 u_int type, id, flag; 287 288 buffer_init(&msg); 289 get_msg(conn, &msg); 290 291 type = buffer_get_char(&msg); 292 id = buffer_get_int(&msg); 293 294 debug3("Received statvfs reply T:%u I:%u", type, id); 295 if (id != expected_id) 296 fatal("ID mismatch (%u != %u)", id, expected_id); 297 if (type == SSH2_FXP_STATUS) { 298 int status = buffer_get_int(&msg); 299 300 if (quiet) 301 debug("Couldn't statvfs: %s", fx2txt(status)); 302 else 303 error("Couldn't statvfs: %s", fx2txt(status)); 304 buffer_free(&msg); 305 return -1; 306 } else if (type != SSH2_FXP_EXTENDED_REPLY) { 307 fatal("Expected SSH2_FXP_EXTENDED_REPLY(%u) packet, got %u", 308 SSH2_FXP_EXTENDED_REPLY, type); 309 } 310 311 bzero(st, sizeof(*st)); 312 st->f_bsize = buffer_get_int64(&msg); 313 st->f_frsize = buffer_get_int64(&msg); 314 st->f_blocks = buffer_get_int64(&msg); 315 st->f_bfree = buffer_get_int64(&msg); 316 st->f_bavail = buffer_get_int64(&msg); 317 st->f_files = buffer_get_int64(&msg); 318 st->f_ffree = buffer_get_int64(&msg); 319 st->f_favail = buffer_get_int64(&msg); 320 st->f_fsid = buffer_get_int64(&msg); 321 flag = buffer_get_int64(&msg); 322 st->f_namemax = buffer_get_int64(&msg); 323 324 st->f_flag = (flag & SSH2_FXE_STATVFS_ST_RDONLY) ? ST_RDONLY : 0; 325 st->f_flag |= (flag & SSH2_FXE_STATVFS_ST_NOSUID) ? ST_NOSUID : 0; 326 327 buffer_free(&msg); 328 329 return 0; 330 } 331 332 struct sftp_conn * 333 do_init(int fd_in, int fd_out, u_int transfer_buflen, u_int num_requests, 334 u_int64_t limit_kbps) 335 { 336 u_int type; 337 Buffer msg; 338 struct sftp_conn *ret; 339 340 ret = xmalloc(sizeof(*ret)); 341 ret->fd_in = fd_in; 342 ret->fd_out = fd_out; 343 ret->transfer_buflen = transfer_buflen; 344 ret->num_requests = num_requests; 345 ret->exts = 0; 346 ret->limit_kbps = 0; 347 348 buffer_init(&msg); 349 buffer_put_char(&msg, SSH2_FXP_INIT); 350 buffer_put_int(&msg, SSH2_FILEXFER_VERSION); 351 send_msg(ret, &msg); 352 353 buffer_clear(&msg); 354 355 get_msg(ret, &msg); 356 357 /* Expecting a VERSION reply */ 358 if ((type = buffer_get_char(&msg)) != SSH2_FXP_VERSION) { 359 error("Invalid packet back from SSH2_FXP_INIT (type %u)", 360 type); 361 buffer_free(&msg); 362 return(NULL); 363 } 364 ret->version = buffer_get_int(&msg); 365 366 debug2("Remote version: %u", ret->version); 367 368 /* Check for extensions */ 369 while (buffer_len(&msg) > 0) { 370 char *name = buffer_get_string(&msg, NULL); 371 char *value = buffer_get_string(&msg, NULL); 372 int known = 0; 373 374 if (strcmp(name, "posix-rename@openssh.com") == 0 && 375 strcmp(value, "1") == 0) { 376 ret->exts |= SFTP_EXT_POSIX_RENAME; 377 known = 1; 378 } else if (strcmp(name, "statvfs@openssh.com") == 0 && 379 strcmp(value, "2") == 0) { 380 ret->exts |= SFTP_EXT_STATVFS; 381 known = 1; 382 } else if (strcmp(name, "fstatvfs@openssh.com") == 0 && 383 strcmp(value, "2") == 0) { 384 ret->exts |= SFTP_EXT_FSTATVFS; 385 known = 1; 386 } else if (strcmp(name, "hardlink@openssh.com") == 0 && 387 strcmp(value, "1") == 0) { 388 ret->exts |= SFTP_EXT_HARDLINK; 389 known = 1; 390 } 391 if (known) { 392 debug2("Server supports extension \"%s\" revision %s", 393 name, value); 394 } else { 395 debug2("Unrecognised server extension \"%s\"", name); 396 } 397 xfree(name); 398 xfree(value); 399 } 400 401 buffer_free(&msg); 402 403 /* Some filexfer v.0 servers don't support large packets */ 404 if (ret->version == 0) 405 ret->transfer_buflen = MIN(ret->transfer_buflen, 20480); 406 407 ret->limit_kbps = limit_kbps; 408 if (ret->limit_kbps > 0) { 409 bandwidth_limit_init(&ret->bwlimit_in, ret->limit_kbps, 410 ret->transfer_buflen); 411 bandwidth_limit_init(&ret->bwlimit_out, ret->limit_kbps, 412 ret->transfer_buflen); 413 } 414 415 return ret; 416 } 417 418 u_int 419 sftp_proto_version(struct sftp_conn *conn) 420 { 421 return conn->version; 422 } 423 424 int 425 do_close(struct sftp_conn *conn, char *handle, u_int handle_len) 426 { 427 u_int id, status; 428 Buffer msg; 429 430 buffer_init(&msg); 431 432 id = conn->msg_id++; 433 buffer_put_char(&msg, SSH2_FXP_CLOSE); 434 buffer_put_int(&msg, id); 435 buffer_put_string(&msg, handle, handle_len); 436 send_msg(conn, &msg); 437 debug3("Sent message SSH2_FXP_CLOSE I:%u", id); 438 439 status = get_status(conn, id); 440 if (status != SSH2_FX_OK) 441 error("Couldn't close file: %s", fx2txt(status)); 442 443 buffer_free(&msg); 444 445 return status; 446 } 447 448 449 static int 450 do_lsreaddir(struct sftp_conn *conn, char *path, int printflag, 451 SFTP_DIRENT ***dir) 452 { 453 Buffer msg; 454 u_int count, type, id, handle_len, i, expected_id, ents = 0; 455 char *handle; 456 457 id = conn->msg_id++; 458 459 buffer_init(&msg); 460 buffer_put_char(&msg, SSH2_FXP_OPENDIR); 461 buffer_put_int(&msg, id); 462 buffer_put_cstring(&msg, path); 463 send_msg(conn, &msg); 464 465 handle = get_handle(conn, id, &handle_len, 466 "remote readdir(\"%s\")", path); 467 if (handle == NULL) { 468 buffer_free(&msg); 469 return -1; 470 } 471 472 if (dir) { 473 ents = 0; 474 *dir = xmalloc(sizeof(**dir)); 475 (*dir)[0] = NULL; 476 } 477 478 for (; !interrupted;) { 479 id = expected_id = conn->msg_id++; 480 481 debug3("Sending SSH2_FXP_READDIR I:%u", id); 482 483 buffer_clear(&msg); 484 buffer_put_char(&msg, SSH2_FXP_READDIR); 485 buffer_put_int(&msg, id); 486 buffer_put_string(&msg, handle, handle_len); 487 send_msg(conn, &msg); 488 489 buffer_clear(&msg); 490 491 get_msg(conn, &msg); 492 493 type = buffer_get_char(&msg); 494 id = buffer_get_int(&msg); 495 496 debug3("Received reply T:%u I:%u", type, id); 497 498 if (id != expected_id) 499 fatal("ID mismatch (%u != %u)", id, expected_id); 500 501 if (type == SSH2_FXP_STATUS) { 502 int status = buffer_get_int(&msg); 503 504 debug3("Received SSH2_FXP_STATUS %d", status); 505 506 if (status == SSH2_FX_EOF) { 507 break; 508 } else { 509 error("Couldn't read directory: %s", 510 fx2txt(status)); 511 do_close(conn, handle, handle_len); 512 xfree(handle); 513 buffer_free(&msg); 514 return(status); 515 } 516 } else if (type != SSH2_FXP_NAME) 517 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", 518 SSH2_FXP_NAME, type); 519 520 count = buffer_get_int(&msg); 521 if (count == 0) 522 break; 523 debug3("Received %d SSH2_FXP_NAME responses", count); 524 for (i = 0; i < count; i++) { 525 char *filename, *longname; 526 Attrib *a; 527 528 filename = buffer_get_string(&msg, NULL); 529 longname = buffer_get_string(&msg, NULL); 530 a = decode_attrib(&msg); 531 532 if (printflag) 533 printf("%s\n", longname); 534 535 /* 536 * Directory entries should never contain '/' 537 * These can be used to attack recursive ops 538 * (e.g. send '../../../../etc/passwd') 539 */ 540 if (strchr(filename, '/') != NULL) { 541 error("Server sent suspect path \"%s\" " 542 "during readdir of \"%s\"", filename, path); 543 goto next; 544 } 545 546 if (dir) { 547 *dir = xrealloc(*dir, ents + 2, sizeof(**dir)); 548 (*dir)[ents] = xmalloc(sizeof(***dir)); 549 (*dir)[ents]->filename = xstrdup(filename); 550 (*dir)[ents]->longname = xstrdup(longname); 551 memcpy(&(*dir)[ents]->a, a, sizeof(*a)); 552 (*dir)[++ents] = NULL; 553 } 554 next: 555 xfree(filename); 556 xfree(longname); 557 } 558 } 559 560 buffer_free(&msg); 561 do_close(conn, handle, handle_len); 562 xfree(handle); 563 564 /* Don't return partial matches on interrupt */ 565 if (interrupted && dir != NULL && *dir != NULL) { 566 free_sftp_dirents(*dir); 567 *dir = xmalloc(sizeof(**dir)); 568 **dir = NULL; 569 } 570 571 return 0; 572 } 573 574 int 575 do_readdir(struct sftp_conn *conn, char *path, SFTP_DIRENT ***dir) 576 { 577 return(do_lsreaddir(conn, path, 0, dir)); 578 } 579 580 void free_sftp_dirents(SFTP_DIRENT **s) 581 { 582 int i; 583 584 for (i = 0; s[i]; i++) { 585 xfree(s[i]->filename); 586 xfree(s[i]->longname); 587 xfree(s[i]); 588 } 589 xfree(s); 590 } 591 592 int 593 do_rm(struct sftp_conn *conn, char *path) 594 { 595 u_int status, id; 596 597 debug2("Sending SSH2_FXP_REMOVE \"%s\"", path); 598 599 id = conn->msg_id++; 600 send_string_request(conn, id, SSH2_FXP_REMOVE, path, strlen(path)); 601 status = get_status(conn, id); 602 if (status != SSH2_FX_OK) 603 error("Couldn't delete file: %s", fx2txt(status)); 604 return(status); 605 } 606 607 int 608 do_mkdir(struct sftp_conn *conn, char *path, Attrib *a, int printflag) 609 { 610 u_int status, id; 611 612 id = conn->msg_id++; 613 send_string_attrs_request(conn, id, SSH2_FXP_MKDIR, path, 614 strlen(path), a); 615 616 status = get_status(conn, id); 617 if (status != SSH2_FX_OK && printflag) 618 error("Couldn't create directory: %s", fx2txt(status)); 619 620 return(status); 621 } 622 623 int 624 do_rmdir(struct sftp_conn *conn, char *path) 625 { 626 u_int status, id; 627 628 id = conn->msg_id++; 629 send_string_request(conn, id, SSH2_FXP_RMDIR, path, 630 strlen(path)); 631 632 status = get_status(conn, id); 633 if (status != SSH2_FX_OK) 634 error("Couldn't remove directory: %s", fx2txt(status)); 635 636 return(status); 637 } 638 639 Attrib * 640 do_stat(struct sftp_conn *conn, char *path, int quiet) 641 { 642 u_int id; 643 644 id = conn->msg_id++; 645 646 send_string_request(conn, id, 647 conn->version == 0 ? SSH2_FXP_STAT_VERSION_0 : SSH2_FXP_STAT, 648 path, strlen(path)); 649 650 return(get_decode_stat(conn, id, quiet)); 651 } 652 653 Attrib * 654 do_lstat(struct sftp_conn *conn, char *path, int quiet) 655 { 656 u_int id; 657 658 if (conn->version == 0) { 659 if (quiet) 660 debug("Server version does not support lstat operation"); 661 else 662 logit("Server version does not support lstat operation"); 663 return(do_stat(conn, path, quiet)); 664 } 665 666 id = conn->msg_id++; 667 send_string_request(conn, id, SSH2_FXP_LSTAT, path, 668 strlen(path)); 669 670 return(get_decode_stat(conn, id, quiet)); 671 } 672 673 #ifdef notyet 674 Attrib * 675 do_fstat(struct sftp_conn *conn, char *handle, u_int handle_len, int quiet) 676 { 677 u_int id; 678 679 id = conn->msg_id++; 680 send_string_request(conn, id, SSH2_FXP_FSTAT, handle, 681 handle_len); 682 683 return(get_decode_stat(conn, id, quiet)); 684 } 685 #endif 686 687 int 688 do_setstat(struct sftp_conn *conn, char *path, Attrib *a) 689 { 690 u_int status, id; 691 692 id = conn->msg_id++; 693 send_string_attrs_request(conn, id, SSH2_FXP_SETSTAT, path, 694 strlen(path), a); 695 696 status = get_status(conn, id); 697 if (status != SSH2_FX_OK) 698 error("Couldn't setstat on \"%s\": %s", path, 699 fx2txt(status)); 700 701 return(status); 702 } 703 704 int 705 do_fsetstat(struct sftp_conn *conn, char *handle, u_int handle_len, 706 Attrib *a) 707 { 708 u_int status, id; 709 710 id = conn->msg_id++; 711 send_string_attrs_request(conn, id, SSH2_FXP_FSETSTAT, handle, 712 handle_len, a); 713 714 status = get_status(conn, id); 715 if (status != SSH2_FX_OK) 716 error("Couldn't fsetstat: %s", fx2txt(status)); 717 718 return(status); 719 } 720 721 char * 722 do_realpath(struct sftp_conn *conn, char *path) 723 { 724 Buffer msg; 725 u_int type, expected_id, count, id; 726 char *filename, *longname; 727 Attrib *a; 728 729 expected_id = id = conn->msg_id++; 730 send_string_request(conn, id, SSH2_FXP_REALPATH, path, 731 strlen(path)); 732 733 buffer_init(&msg); 734 735 get_msg(conn, &msg); 736 type = buffer_get_char(&msg); 737 id = buffer_get_int(&msg); 738 739 if (id != expected_id) 740 fatal("ID mismatch (%u != %u)", id, expected_id); 741 742 if (type == SSH2_FXP_STATUS) { 743 u_int status = buffer_get_int(&msg); 744 745 error("Couldn't canonicalise: %s", fx2txt(status)); 746 buffer_free(&msg); 747 return NULL; 748 } else if (type != SSH2_FXP_NAME) 749 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", 750 SSH2_FXP_NAME, type); 751 752 count = buffer_get_int(&msg); 753 if (count != 1) 754 fatal("Got multiple names (%d) from SSH_FXP_REALPATH", count); 755 756 filename = buffer_get_string(&msg, NULL); 757 longname = buffer_get_string(&msg, NULL); 758 a = decode_attrib(&msg); 759 760 debug3("SSH_FXP_REALPATH %s -> %s size %lu", path, filename, 761 (unsigned long)a->size); 762 763 xfree(longname); 764 765 buffer_free(&msg); 766 767 return(filename); 768 } 769 770 int 771 do_rename(struct sftp_conn *conn, char *oldpath, char *newpath) 772 { 773 Buffer msg; 774 u_int status, id; 775 776 buffer_init(&msg); 777 778 /* Send rename request */ 779 id = conn->msg_id++; 780 if ((conn->exts & SFTP_EXT_POSIX_RENAME)) { 781 buffer_put_char(&msg, SSH2_FXP_EXTENDED); 782 buffer_put_int(&msg, id); 783 buffer_put_cstring(&msg, "posix-rename@openssh.com"); 784 } else { 785 buffer_put_char(&msg, SSH2_FXP_RENAME); 786 buffer_put_int(&msg, id); 787 } 788 buffer_put_cstring(&msg, oldpath); 789 buffer_put_cstring(&msg, newpath); 790 send_msg(conn, &msg); 791 debug3("Sent message %s \"%s\" -> \"%s\"", 792 (conn->exts & SFTP_EXT_POSIX_RENAME) ? "posix-rename@openssh.com" : 793 "SSH2_FXP_RENAME", oldpath, newpath); 794 buffer_free(&msg); 795 796 status = get_status(conn, id); 797 if (status != SSH2_FX_OK) 798 error("Couldn't rename file \"%s\" to \"%s\": %s", oldpath, 799 newpath, fx2txt(status)); 800 801 return(status); 802 } 803 804 int 805 do_hardlink(struct sftp_conn *conn, char *oldpath, char *newpath) 806 { 807 Buffer msg; 808 u_int status, id; 809 810 if ((conn->exts & SFTP_EXT_HARDLINK) == 0) { 811 error("Server does not support hardlink@openssh.com extension"); 812 return -1; 813 } 814 815 buffer_init(&msg); 816 817 /* Send link request */ 818 id = conn->msg_id++; 819 buffer_put_char(&msg, SSH2_FXP_EXTENDED); 820 buffer_put_int(&msg, id); 821 buffer_put_cstring(&msg, "hardlink@openssh.com"); 822 buffer_put_cstring(&msg, oldpath); 823 buffer_put_cstring(&msg, newpath); 824 send_msg(conn, &msg); 825 debug3("Sent message hardlink@openssh.com \"%s\" -> \"%s\"", 826 oldpath, newpath); 827 buffer_free(&msg); 828 829 status = get_status(conn, id); 830 if (status != SSH2_FX_OK) 831 error("Couldn't link file \"%s\" to \"%s\": %s", oldpath, 832 newpath, fx2txt(status)); 833 834 return(status); 835 } 836 837 int 838 do_symlink(struct sftp_conn *conn, char *oldpath, char *newpath) 839 { 840 Buffer msg; 841 u_int status, id; 842 843 if (conn->version < 3) { 844 error("This server does not support the symlink operation"); 845 return(SSH2_FX_OP_UNSUPPORTED); 846 } 847 848 buffer_init(&msg); 849 850 /* Send symlink request */ 851 id = conn->msg_id++; 852 buffer_put_char(&msg, SSH2_FXP_SYMLINK); 853 buffer_put_int(&msg, id); 854 buffer_put_cstring(&msg, oldpath); 855 buffer_put_cstring(&msg, newpath); 856 send_msg(conn, &msg); 857 debug3("Sent message SSH2_FXP_SYMLINK \"%s\" -> \"%s\"", oldpath, 858 newpath); 859 buffer_free(&msg); 860 861 status = get_status(conn, id); 862 if (status != SSH2_FX_OK) 863 error("Couldn't symlink file \"%s\" to \"%s\": %s", oldpath, 864 newpath, fx2txt(status)); 865 866 return(status); 867 } 868 869 #ifdef notyet 870 char * 871 do_readlink(struct sftp_conn *conn, char *path) 872 { 873 Buffer msg; 874 u_int type, expected_id, count, id; 875 char *filename, *longname; 876 Attrib *a; 877 878 expected_id = id = conn->msg_id++; 879 send_string_request(conn, id, SSH2_FXP_READLINK, path, strlen(path)); 880 881 buffer_init(&msg); 882 883 get_msg(conn, &msg); 884 type = buffer_get_char(&msg); 885 id = buffer_get_int(&msg); 886 887 if (id != expected_id) 888 fatal("ID mismatch (%u != %u)", id, expected_id); 889 890 if (type == SSH2_FXP_STATUS) { 891 u_int status = buffer_get_int(&msg); 892 893 error("Couldn't readlink: %s", fx2txt(status)); 894 buffer_free(&msg); 895 return(NULL); 896 } else if (type != SSH2_FXP_NAME) 897 fatal("Expected SSH2_FXP_NAME(%u) packet, got %u", 898 SSH2_FXP_NAME, type); 899 900 count = buffer_get_int(&msg); 901 if (count != 1) 902 fatal("Got multiple names (%d) from SSH_FXP_READLINK", count); 903 904 filename = buffer_get_string(&msg, NULL); 905 longname = buffer_get_string(&msg, NULL); 906 a = decode_attrib(&msg); 907 908 debug3("SSH_FXP_READLINK %s -> %s", path, filename); 909 910 xfree(longname); 911 912 buffer_free(&msg); 913 914 return(filename); 915 } 916 #endif 917 918 int 919 do_statvfs(struct sftp_conn *conn, const char *path, struct sftp_statvfs *st, 920 int quiet) 921 { 922 Buffer msg; 923 u_int id; 924 925 if ((conn->exts & SFTP_EXT_STATVFS) == 0) { 926 error("Server does not support statvfs@openssh.com extension"); 927 return -1; 928 } 929 930 id = conn->msg_id++; 931 932 buffer_init(&msg); 933 buffer_clear(&msg); 934 buffer_put_char(&msg, SSH2_FXP_EXTENDED); 935 buffer_put_int(&msg, id); 936 buffer_put_cstring(&msg, "statvfs@openssh.com"); 937 buffer_put_cstring(&msg, path); 938 send_msg(conn, &msg); 939 buffer_free(&msg); 940 941 return get_decode_statvfs(conn, st, id, quiet); 942 } 943 944 #ifdef notyet 945 int 946 do_fstatvfs(struct sftp_conn *conn, const char *handle, u_int handle_len, 947 struct sftp_statvfs *st, int quiet) 948 { 949 Buffer msg; 950 u_int id; 951 952 if ((conn->exts & SFTP_EXT_FSTATVFS) == 0) { 953 error("Server does not support fstatvfs@openssh.com extension"); 954 return -1; 955 } 956 957 id = conn->msg_id++; 958 959 buffer_init(&msg); 960 buffer_clear(&msg); 961 buffer_put_char(&msg, SSH2_FXP_EXTENDED); 962 buffer_put_int(&msg, id); 963 buffer_put_cstring(&msg, "fstatvfs@openssh.com"); 964 buffer_put_string(&msg, handle, handle_len); 965 send_msg(conn, &msg); 966 buffer_free(&msg); 967 968 return get_decode_statvfs(conn, st, id, quiet); 969 } 970 #endif 971 972 static void 973 send_read_request(struct sftp_conn *conn, u_int id, u_int64_t offset, 974 u_int len, char *handle, u_int handle_len) 975 { 976 Buffer msg; 977 978 buffer_init(&msg); 979 buffer_clear(&msg); 980 buffer_put_char(&msg, SSH2_FXP_READ); 981 buffer_put_int(&msg, id); 982 buffer_put_string(&msg, handle, handle_len); 983 buffer_put_int64(&msg, offset); 984 buffer_put_int(&msg, len); 985 send_msg(conn, &msg); 986 buffer_free(&msg); 987 } 988 989 int 990 do_download(struct sftp_conn *conn, char *remote_path, char *local_path, 991 Attrib *a, int pflag) 992 { 993 Attrib junk; 994 Buffer msg; 995 char *handle; 996 int local_fd, status = 0, write_error; 997 int read_error, write_errno; 998 u_int64_t offset, size; 999 u_int handle_len, mode, type, id, buflen, num_req, max_req; 1000 off_t progress_counter; 1001 struct request { 1002 u_int id; 1003 u_int len; 1004 u_int64_t offset; 1005 TAILQ_ENTRY(request) tq; 1006 }; 1007 TAILQ_HEAD(reqhead, request) requests; 1008 struct request *req; 1009 1010 TAILQ_INIT(&requests); 1011 1012 if (a == NULL && (a = do_stat(conn, remote_path, 0)) == NULL) 1013 return -1; 1014 1015 /* Do not preserve set[ug]id here, as we do not preserve ownership */ 1016 if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) 1017 mode = a->perm & 0777; 1018 else 1019 mode = 0666; 1020 1021 if ((a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) && 1022 (!S_ISREG(a->perm))) { 1023 error("Cannot download non-regular file: %s", remote_path); 1024 return(-1); 1025 } 1026 1027 if (a->flags & SSH2_FILEXFER_ATTR_SIZE) 1028 size = a->size; 1029 else 1030 size = 0; 1031 1032 buflen = conn->transfer_buflen; 1033 buffer_init(&msg); 1034 1035 /* Send open request */ 1036 id = conn->msg_id++; 1037 buffer_put_char(&msg, SSH2_FXP_OPEN); 1038 buffer_put_int(&msg, id); 1039 buffer_put_cstring(&msg, remote_path); 1040 buffer_put_int(&msg, SSH2_FXF_READ); 1041 attrib_clear(&junk); /* Send empty attributes */ 1042 encode_attrib(&msg, &junk); 1043 send_msg(conn, &msg); 1044 debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); 1045 1046 handle = get_handle(conn, id, &handle_len, 1047 "remote open(\"%s\")", remote_path); 1048 if (handle == NULL) { 1049 buffer_free(&msg); 1050 return(-1); 1051 } 1052 1053 local_fd = open(local_path, O_WRONLY | O_CREAT | O_TRUNC, 1054 mode | S_IWRITE); 1055 if (local_fd == -1) { 1056 error("Couldn't open local file \"%s\" for writing: %s", 1057 local_path, strerror(errno)); 1058 do_close(conn, handle, handle_len); 1059 buffer_free(&msg); 1060 xfree(handle); 1061 return(-1); 1062 } 1063 1064 /* Read from remote and write to local */ 1065 write_error = read_error = write_errno = num_req = offset = 0; 1066 max_req = 1; 1067 progress_counter = 0; 1068 1069 if (showprogress && size != 0) 1070 start_progress_meter(remote_path, size, &progress_counter); 1071 1072 while (num_req > 0 || max_req > 0) { 1073 char *data; 1074 u_int len; 1075 1076 /* 1077 * Simulate EOF on interrupt: stop sending new requests and 1078 * allow outstanding requests to drain gracefully 1079 */ 1080 if (interrupted) { 1081 if (num_req == 0) /* If we haven't started yet... */ 1082 break; 1083 max_req = 0; 1084 } 1085 1086 /* Send some more requests */ 1087 while (num_req < max_req) { 1088 debug3("Request range %llu -> %llu (%d/%d)", 1089 (unsigned long long)offset, 1090 (unsigned long long)offset + buflen - 1, 1091 num_req, max_req); 1092 req = xmalloc(sizeof(*req)); 1093 req->id = conn->msg_id++; 1094 req->len = buflen; 1095 req->offset = offset; 1096 offset += buflen; 1097 num_req++; 1098 TAILQ_INSERT_TAIL(&requests, req, tq); 1099 send_read_request(conn, req->id, req->offset, 1100 req->len, handle, handle_len); 1101 } 1102 1103 buffer_clear(&msg); 1104 get_msg(conn, &msg); 1105 type = buffer_get_char(&msg); 1106 id = buffer_get_int(&msg); 1107 debug3("Received reply T:%u I:%u R:%d", type, id, max_req); 1108 1109 /* Find the request in our queue */ 1110 for (req = TAILQ_FIRST(&requests); 1111 req != NULL && req->id != id; 1112 req = TAILQ_NEXT(req, tq)) 1113 ; 1114 if (req == NULL) 1115 fatal("Unexpected reply %u", id); 1116 1117 switch (type) { 1118 case SSH2_FXP_STATUS: 1119 status = buffer_get_int(&msg); 1120 if (status != SSH2_FX_EOF) 1121 read_error = 1; 1122 max_req = 0; 1123 TAILQ_REMOVE(&requests, req, tq); 1124 xfree(req); 1125 num_req--; 1126 break; 1127 case SSH2_FXP_DATA: 1128 data = buffer_get_string(&msg, &len); 1129 debug3("Received data %llu -> %llu", 1130 (unsigned long long)req->offset, 1131 (unsigned long long)req->offset + len - 1); 1132 if (len > req->len) 1133 fatal("Received more data than asked for " 1134 "%u > %u", len, req->len); 1135 if ((lseek(local_fd, req->offset, SEEK_SET) == -1 || 1136 atomicio(vwrite, local_fd, data, len) != len) && 1137 !write_error) { 1138 write_errno = errno; 1139 write_error = 1; 1140 max_req = 0; 1141 } 1142 progress_counter += len; 1143 xfree(data); 1144 1145 if (len == req->len) { 1146 TAILQ_REMOVE(&requests, req, tq); 1147 xfree(req); 1148 num_req--; 1149 } else { 1150 /* Resend the request for the missing data */ 1151 debug3("Short data block, re-requesting " 1152 "%llu -> %llu (%2d)", 1153 (unsigned long long)req->offset + len, 1154 (unsigned long long)req->offset + 1155 req->len - 1, num_req); 1156 req->id = conn->msg_id++; 1157 req->len -= len; 1158 req->offset += len; 1159 send_read_request(conn, req->id, 1160 req->offset, req->len, handle, handle_len); 1161 /* Reduce the request size */ 1162 if (len < buflen) 1163 buflen = MAX(MIN_READ_SIZE, len); 1164 } 1165 if (max_req > 0) { /* max_req = 0 iff EOF received */ 1166 if (size > 0 && offset > size) { 1167 /* Only one request at a time 1168 * after the expected EOF */ 1169 debug3("Finish at %llu (%2d)", 1170 (unsigned long long)offset, 1171 num_req); 1172 max_req = 1; 1173 } else if (max_req <= conn->num_requests) { 1174 ++max_req; 1175 } 1176 } 1177 break; 1178 default: 1179 fatal("Expected SSH2_FXP_DATA(%u) packet, got %u", 1180 SSH2_FXP_DATA, type); 1181 } 1182 } 1183 1184 if (showprogress && size) 1185 stop_progress_meter(); 1186 1187 /* Sanity check */ 1188 if (TAILQ_FIRST(&requests) != NULL) 1189 fatal("Transfer complete, but requests still in queue"); 1190 1191 if (read_error) { 1192 error("Couldn't read from remote file \"%s\" : %s", 1193 remote_path, fx2txt(status)); 1194 do_close(conn, handle, handle_len); 1195 } else if (write_error) { 1196 error("Couldn't write to \"%s\": %s", local_path, 1197 strerror(write_errno)); 1198 status = -1; 1199 do_close(conn, handle, handle_len); 1200 } else { 1201 status = do_close(conn, handle, handle_len); 1202 1203 /* Override umask and utimes if asked */ 1204 #ifdef HAVE_FCHMOD 1205 if (pflag && fchmod(local_fd, mode) == -1) 1206 #else 1207 if (pflag && chmod(local_path, mode) == -1) 1208 #endif /* HAVE_FCHMOD */ 1209 error("Couldn't set mode on \"%s\": %s", local_path, 1210 strerror(errno)); 1211 if (pflag && (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME)) { 1212 struct timeval tv[2]; 1213 tv[0].tv_sec = a->atime; 1214 tv[1].tv_sec = a->mtime; 1215 tv[0].tv_usec = tv[1].tv_usec = 0; 1216 if (utimes(local_path, tv) == -1) 1217 error("Can't set times on \"%s\": %s", 1218 local_path, strerror(errno)); 1219 } 1220 } 1221 close(local_fd); 1222 buffer_free(&msg); 1223 xfree(handle); 1224 1225 return(status); 1226 } 1227 1228 static int 1229 download_dir_internal(struct sftp_conn *conn, char *src, char *dst, 1230 Attrib *dirattrib, int pflag, int printflag, int depth) 1231 { 1232 int i, ret = 0; 1233 SFTP_DIRENT **dir_entries; 1234 char *filename, *new_src, *new_dst; 1235 mode_t mode = 0777; 1236 1237 if (depth >= MAX_DIR_DEPTH) { 1238 error("Maximum directory depth exceeded: %d levels", depth); 1239 return -1; 1240 } 1241 1242 if (dirattrib == NULL && 1243 (dirattrib = do_stat(conn, src, 1)) == NULL) { 1244 error("Unable to stat remote directory \"%s\"", src); 1245 return -1; 1246 } 1247 if (!S_ISDIR(dirattrib->perm)) { 1248 error("\"%s\" is not a directory", src); 1249 return -1; 1250 } 1251 if (printflag) 1252 printf("Retrieving %s\n", src); 1253 1254 if (dirattrib->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) 1255 mode = dirattrib->perm & 01777; 1256 else { 1257 debug("Server did not send permissions for " 1258 "directory \"%s\"", dst); 1259 } 1260 1261 if (mkdir(dst, mode) == -1 && errno != EEXIST) { 1262 error("mkdir %s: %s", dst, strerror(errno)); 1263 return -1; 1264 } 1265 1266 if (do_readdir(conn, src, &dir_entries) == -1) { 1267 error("%s: Failed to get directory contents", src); 1268 return -1; 1269 } 1270 1271 for (i = 0; dir_entries[i] != NULL && !interrupted; i++) { 1272 filename = dir_entries[i]->filename; 1273 1274 new_dst = path_append(dst, filename); 1275 new_src = path_append(src, filename); 1276 1277 if (S_ISDIR(dir_entries[i]->a.perm)) { 1278 if (strcmp(filename, ".") == 0 || 1279 strcmp(filename, "..") == 0) 1280 continue; 1281 if (download_dir_internal(conn, new_src, new_dst, 1282 &(dir_entries[i]->a), pflag, printflag, 1283 depth + 1) == -1) 1284 ret = -1; 1285 } else if (S_ISREG(dir_entries[i]->a.perm) ) { 1286 if (do_download(conn, new_src, new_dst, 1287 &(dir_entries[i]->a), pflag) == -1) { 1288 error("Download of file %s to %s failed", 1289 new_src, new_dst); 1290 ret = -1; 1291 } 1292 } else 1293 logit("%s: not a regular file\n", new_src); 1294 1295 xfree(new_dst); 1296 xfree(new_src); 1297 } 1298 1299 if (pflag) { 1300 if (dirattrib->flags & SSH2_FILEXFER_ATTR_ACMODTIME) { 1301 struct timeval tv[2]; 1302 tv[0].tv_sec = dirattrib->atime; 1303 tv[1].tv_sec = dirattrib->mtime; 1304 tv[0].tv_usec = tv[1].tv_usec = 0; 1305 if (utimes(dst, tv) == -1) 1306 error("Can't set times on \"%s\": %s", 1307 dst, strerror(errno)); 1308 } else 1309 debug("Server did not send times for directory " 1310 "\"%s\"", dst); 1311 } 1312 1313 free_sftp_dirents(dir_entries); 1314 1315 return ret; 1316 } 1317 1318 int 1319 download_dir(struct sftp_conn *conn, char *src, char *dst, 1320 Attrib *dirattrib, int pflag, int printflag) 1321 { 1322 char *src_canon; 1323 int ret; 1324 1325 if ((src_canon = do_realpath(conn, src)) == NULL) { 1326 error("Unable to canonicalise path \"%s\"", src); 1327 return -1; 1328 } 1329 1330 ret = download_dir_internal(conn, src_canon, dst, 1331 dirattrib, pflag, printflag, 0); 1332 xfree(src_canon); 1333 return ret; 1334 } 1335 1336 int 1337 do_upload(struct sftp_conn *conn, char *local_path, char *remote_path, 1338 int pflag) 1339 { 1340 int local_fd; 1341 int status = SSH2_FX_OK; 1342 u_int handle_len, id, type; 1343 off_t offset; 1344 char *handle, *data; 1345 Buffer msg; 1346 struct stat sb; 1347 Attrib a; 1348 u_int32_t startid; 1349 u_int32_t ackid; 1350 struct outstanding_ack { 1351 u_int id; 1352 u_int len; 1353 off_t offset; 1354 TAILQ_ENTRY(outstanding_ack) tq; 1355 }; 1356 TAILQ_HEAD(ackhead, outstanding_ack) acks; 1357 struct outstanding_ack *ack = NULL; 1358 1359 TAILQ_INIT(&acks); 1360 1361 if ((local_fd = open(local_path, O_RDONLY, 0)) == -1) { 1362 error("Couldn't open local file \"%s\" for reading: %s", 1363 local_path, strerror(errno)); 1364 return(-1); 1365 } 1366 if (fstat(local_fd, &sb) == -1) { 1367 error("Couldn't fstat local file \"%s\": %s", 1368 local_path, strerror(errno)); 1369 close(local_fd); 1370 return(-1); 1371 } 1372 if (!S_ISREG(sb.st_mode)) { 1373 error("%s is not a regular file", local_path); 1374 close(local_fd); 1375 return(-1); 1376 } 1377 stat_to_attrib(&sb, &a); 1378 1379 a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; 1380 a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; 1381 a.perm &= 0777; 1382 if (!pflag) 1383 a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; 1384 1385 buffer_init(&msg); 1386 1387 /* Send open request */ 1388 id = conn->msg_id++; 1389 buffer_put_char(&msg, SSH2_FXP_OPEN); 1390 buffer_put_int(&msg, id); 1391 buffer_put_cstring(&msg, remote_path); 1392 buffer_put_int(&msg, SSH2_FXF_WRITE|SSH2_FXF_CREAT|SSH2_FXF_TRUNC); 1393 encode_attrib(&msg, &a); 1394 send_msg(conn, &msg); 1395 debug3("Sent message SSH2_FXP_OPEN I:%u P:%s", id, remote_path); 1396 1397 buffer_clear(&msg); 1398 1399 handle = get_handle(conn, id, &handle_len, 1400 "remote open(\"%s\")", remote_path); 1401 if (handle == NULL) { 1402 close(local_fd); 1403 buffer_free(&msg); 1404 return -1; 1405 } 1406 1407 startid = ackid = id + 1; 1408 data = xmalloc(conn->transfer_buflen); 1409 1410 /* Read from local and write to remote */ 1411 offset = 0; 1412 if (showprogress) 1413 start_progress_meter(local_path, sb.st_size, &offset); 1414 1415 for (;;) { 1416 int len; 1417 1418 /* 1419 * Can't use atomicio here because it returns 0 on EOF, 1420 * thus losing the last block of the file. 1421 * Simulate an EOF on interrupt, allowing ACKs from the 1422 * server to drain. 1423 */ 1424 if (interrupted || status != SSH2_FX_OK) 1425 len = 0; 1426 else do 1427 len = read(local_fd, data, conn->transfer_buflen); 1428 while ((len == -1) && 1429 (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)); 1430 1431 if (len == -1) 1432 fatal("Couldn't read from \"%s\": %s", local_path, 1433 strerror(errno)); 1434 1435 if (len != 0) { 1436 ack = xmalloc(sizeof(*ack)); 1437 ack->id = ++id; 1438 ack->offset = offset; 1439 ack->len = len; 1440 TAILQ_INSERT_TAIL(&acks, ack, tq); 1441 1442 buffer_clear(&msg); 1443 buffer_put_char(&msg, SSH2_FXP_WRITE); 1444 buffer_put_int(&msg, ack->id); 1445 buffer_put_string(&msg, handle, handle_len); 1446 buffer_put_int64(&msg, offset); 1447 buffer_put_string(&msg, data, len); 1448 send_msg(conn, &msg); 1449 debug3("Sent message SSH2_FXP_WRITE I:%u O:%llu S:%u", 1450 id, (unsigned long long)offset, len); 1451 } else if (TAILQ_FIRST(&acks) == NULL) 1452 break; 1453 1454 if (ack == NULL) 1455 fatal("Unexpected ACK %u", id); 1456 1457 if (id == startid || len == 0 || 1458 id - ackid >= conn->num_requests) { 1459 u_int r_id; 1460 1461 buffer_clear(&msg); 1462 get_msg(conn, &msg); 1463 type = buffer_get_char(&msg); 1464 r_id = buffer_get_int(&msg); 1465 1466 if (type != SSH2_FXP_STATUS) 1467 fatal("Expected SSH2_FXP_STATUS(%d) packet, " 1468 "got %d", SSH2_FXP_STATUS, type); 1469 1470 status = buffer_get_int(&msg); 1471 debug3("SSH2_FXP_STATUS %d", status); 1472 1473 /* Find the request in our queue */ 1474 for (ack = TAILQ_FIRST(&acks); 1475 ack != NULL && ack->id != r_id; 1476 ack = TAILQ_NEXT(ack, tq)) 1477 ; 1478 if (ack == NULL) 1479 fatal("Can't find request for ID %u", r_id); 1480 TAILQ_REMOVE(&acks, ack, tq); 1481 debug3("In write loop, ack for %u %u bytes at %lld", 1482 ack->id, ack->len, (long long)ack->offset); 1483 ++ackid; 1484 xfree(ack); 1485 } 1486 offset += len; 1487 if (offset < 0) 1488 fatal("%s: offset < 0", __func__); 1489 } 1490 buffer_free(&msg); 1491 1492 if (showprogress) 1493 stop_progress_meter(); 1494 xfree(data); 1495 1496 if (status != SSH2_FX_OK) { 1497 error("Couldn't write to remote file \"%s\": %s", 1498 remote_path, fx2txt(status)); 1499 status = -1; 1500 } 1501 1502 if (close(local_fd) == -1) { 1503 error("Couldn't close local file \"%s\": %s", local_path, 1504 strerror(errno)); 1505 status = -1; 1506 } 1507 1508 /* Override umask and utimes if asked */ 1509 if (pflag) 1510 do_fsetstat(conn, handle, handle_len, &a); 1511 1512 if (do_close(conn, handle, handle_len) != SSH2_FX_OK) 1513 status = -1; 1514 xfree(handle); 1515 1516 return status; 1517 } 1518 1519 static int 1520 upload_dir_internal(struct sftp_conn *conn, char *src, char *dst, 1521 int pflag, int printflag, int depth) 1522 { 1523 int ret = 0, status; 1524 DIR *dirp; 1525 struct dirent *dp; 1526 char *filename, *new_src, *new_dst; 1527 struct stat sb; 1528 Attrib a; 1529 1530 if (depth >= MAX_DIR_DEPTH) { 1531 error("Maximum directory depth exceeded: %d levels", depth); 1532 return -1; 1533 } 1534 1535 if (stat(src, &sb) == -1) { 1536 error("Couldn't stat directory \"%s\": %s", 1537 src, strerror(errno)); 1538 return -1; 1539 } 1540 if (!S_ISDIR(sb.st_mode)) { 1541 error("\"%s\" is not a directory", src); 1542 return -1; 1543 } 1544 if (printflag) 1545 printf("Entering %s\n", src); 1546 1547 attrib_clear(&a); 1548 stat_to_attrib(&sb, &a); 1549 a.flags &= ~SSH2_FILEXFER_ATTR_SIZE; 1550 a.flags &= ~SSH2_FILEXFER_ATTR_UIDGID; 1551 a.perm &= 01777; 1552 if (!pflag) 1553 a.flags &= ~SSH2_FILEXFER_ATTR_ACMODTIME; 1554 1555 status = do_mkdir(conn, dst, &a, 0); 1556 /* 1557 * we lack a portable status for errno EEXIST, 1558 * so if we get a SSH2_FX_FAILURE back we must check 1559 * if it was created successfully. 1560 */ 1561 if (status != SSH2_FX_OK) { 1562 if (status != SSH2_FX_FAILURE) 1563 return -1; 1564 if (do_stat(conn, dst, 0) == NULL) 1565 return -1; 1566 } 1567 1568 if ((dirp = opendir(src)) == NULL) { 1569 error("Failed to open dir \"%s\": %s", src, strerror(errno)); 1570 return -1; 1571 } 1572 1573 while (((dp = readdir(dirp)) != NULL) && !interrupted) { 1574 if (dp->d_ino == 0) 1575 continue; 1576 filename = dp->d_name; 1577 new_dst = path_append(dst, filename); 1578 new_src = path_append(src, filename); 1579 1580 if (lstat(new_src, &sb) == -1) { 1581 logit("%s: lstat failed: %s", filename, 1582 strerror(errno)); 1583 ret = -1; 1584 } else if (S_ISDIR(sb.st_mode)) { 1585 if (strcmp(filename, ".") == 0 || 1586 strcmp(filename, "..") == 0) 1587 continue; 1588 1589 if (upload_dir_internal(conn, new_src, new_dst, 1590 pflag, printflag, depth + 1) == -1) 1591 ret = -1; 1592 } else if (S_ISREG(sb.st_mode)) { 1593 if (do_upload(conn, new_src, new_dst, pflag) == -1) { 1594 error("Uploading of file %s to %s failed!", 1595 new_src, new_dst); 1596 ret = -1; 1597 } 1598 } else 1599 logit("%s: not a regular file\n", filename); 1600 xfree(new_dst); 1601 xfree(new_src); 1602 } 1603 1604 do_setstat(conn, dst, &a); 1605 1606 (void) closedir(dirp); 1607 return ret; 1608 } 1609 1610 int 1611 upload_dir(struct sftp_conn *conn, char *src, char *dst, int printflag, 1612 int pflag) 1613 { 1614 char *dst_canon; 1615 int ret; 1616 1617 if ((dst_canon = do_realpath(conn, dst)) == NULL) { 1618 error("Unable to canonicalise path \"%s\"", dst); 1619 return -1; 1620 } 1621 1622 ret = upload_dir_internal(conn, src, dst_canon, pflag, printflag, 0); 1623 xfree(dst_canon); 1624 return ret; 1625 } 1626 1627 char * 1628 path_append(char *p1, char *p2) 1629 { 1630 char *ret; 1631 size_t len = strlen(p1) + strlen(p2) + 2; 1632 1633 ret = xmalloc(len); 1634 strlcpy(ret, p1, len); 1635 if (p1[0] != '\0' && p1[strlen(p1) - 1] != '/') 1636 strlcat(ret, "/", len); 1637 strlcat(ret, p2, len); 1638 1639 return(ret); 1640 } 1641 1642