| 1 | /* |
| 2 | * Routines only used by the receiving process. |
| 3 | * |
| 4 | * Copyright (C) 1996-2000 Andrew Tridgell |
| 5 | * Copyright (C) 1996 Paul Mackerras |
| 6 | * Copyright (C) 2003-2008 Wayne Davison |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 3 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, visit the http://fsf.org website. |
| 20 | */ |
| 21 | |
| 22 | #include "rsync.h" |
| 23 | |
| 24 | extern int dry_run; |
| 25 | extern int do_xfers; |
| 26 | extern int am_server; |
| 27 | extern int inc_recurse; |
| 28 | extern int log_before_transfer; |
| 29 | extern int stdout_format_has_i; |
| 30 | extern int logfile_format_has_i; |
| 31 | extern int csum_length; |
| 32 | extern int read_batch; |
| 33 | extern int write_batch; |
| 34 | extern int batch_gen_fd; |
| 35 | extern int protocol_version; |
| 36 | extern int relative_paths; |
| 37 | extern int preserve_hard_links; |
| 38 | extern int preserve_perms; |
| 39 | extern int preserve_xattrs; |
| 40 | extern int basis_dir_cnt; |
| 41 | extern int make_backups; |
| 42 | extern int cleanup_got_literal; |
| 43 | extern int remove_source_files; |
| 44 | extern int append_mode; |
| 45 | extern int sparse_files; |
| 46 | extern int keep_partial; |
| 47 | extern int checksum_len; |
| 48 | extern int checksum_seed; |
| 49 | extern int inplace; |
| 50 | extern int delay_updates; |
| 51 | extern mode_t orig_umask; |
| 52 | extern struct stats stats; |
| 53 | extern char *tmpdir; |
| 54 | extern char *partial_dir; |
| 55 | extern char *basis_dir[MAX_BASIS_DIRS+1]; |
| 56 | extern char sender_file_sum[MAX_DIGEST_LEN]; |
| 57 | extern struct file_list *cur_flist, *first_flist, *dir_flist; |
| 58 | extern struct filter_list_struct daemon_filter_list; |
| 59 | |
| 60 | static struct bitbag *delayed_bits = NULL; |
| 61 | static int phase = 0, redoing = 0; |
| 62 | /* We're either updating the basis file or an identical copy: */ |
| 63 | static int updating_basis_or_equiv; |
| 64 | |
| 65 | /* |
| 66 | * get_tmpname() - create a tmp filename for a given filename |
| 67 | * |
| 68 | * If a tmpdir is defined, use that as the directory to |
| 69 | * put it in. Otherwise, the tmp filename is in the same |
| 70 | * directory as the given name. Note that there may be no |
| 71 | * directory at all in the given name! |
| 72 | * |
| 73 | * The tmp filename is basically the given filename with a |
| 74 | * dot prepended, and .XXXXXX appended (for mkstemp() to |
| 75 | * put its unique gunk in). Take care to not exceed |
| 76 | * either the MAXPATHLEN or NAME_MAX, esp. the last, as |
| 77 | * the basename basically becomes 8 chars longer. In that |
| 78 | * case, the original name is shortened sufficiently to |
| 79 | * make it all fit. |
| 80 | * |
| 81 | * Of course, there's no real reason for the tmp name to |
| 82 | * look like the original, except to satisfy us humans. |
| 83 | * As long as it's unique, rsync will work. |
| 84 | */ |
| 85 | |
| 86 | int get_tmpname(char *fnametmp, const char *fname) |
| 87 | { |
| 88 | int maxname, added, length = 0; |
| 89 | const char *f; |
| 90 | |
| 91 | if (tmpdir) { |
| 92 | /* Note: this can't overflow, so the return value is safe */ |
| 93 | length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2); |
| 94 | fnametmp[length++] = '/'; |
| 95 | } |
| 96 | |
| 97 | if ((f = strrchr(fname, '/')) != NULL) { |
| 98 | ++f; |
| 99 | if (!tmpdir) { |
| 100 | length = f - fname; |
| 101 | /* copy up to and including the slash */ |
| 102 | strlcpy(fnametmp, fname, length + 1); |
| 103 | } |
| 104 | } else |
| 105 | f = fname; |
| 106 | fnametmp[length++] = '.'; |
| 107 | |
| 108 | /* The maxname value is bufsize, and includes space for the '\0'. |
| 109 | * (Note that NAME_MAX get -8 for the leading '.' above.) */ |
| 110 | maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8); |
| 111 | |
| 112 | if (maxname < 1) { |
| 113 | rprintf(FERROR_XFER, "temporary filename too long: %s\n", fname); |
| 114 | fnametmp[0] = '\0'; |
| 115 | return 0; |
| 116 | } |
| 117 | |
| 118 | added = strlcpy(fnametmp + length, f, maxname); |
| 119 | if (added >= maxname) |
| 120 | added = maxname - 1; |
| 121 | memcpy(fnametmp + length + added, ".XXXXXX", 8); |
| 122 | |
| 123 | return 1; |
| 124 | } |
| 125 | |
| 126 | /* Opens a temporary file for writing. |
| 127 | * Success: Writes name into fnametmp, returns fd. |
| 128 | * Failure: Clobbers fnametmp, returns -1. |
| 129 | * Calling cleanup_set() is the caller's job. */ |
| 130 | int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file) |
| 131 | { |
| 132 | int fd; |
| 133 | |
| 134 | if (!get_tmpname(fnametmp, fname)) |
| 135 | return -1; |
| 136 | |
| 137 | /* We initially set the perms without the setuid/setgid bits or group |
| 138 | * access to ensure that there is no race condition. They will be |
| 139 | * correctly updated after the right owner and group info is set. |
| 140 | * (Thanks to snabb@epipe.fi for pointing this out.) */ |
| 141 | fd = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS); |
| 142 | |
| 143 | #if 0 |
| 144 | /* In most cases parent directories will already exist because their |
| 145 | * information should have been previously transferred, but that may |
| 146 | * not be the case with -R */ |
| 147 | if (fd == -1 && relative_paths && errno == ENOENT |
| 148 | && create_directory_path(fnametmp) == 0) { |
| 149 | /* Get back to name with XXXXXX in it. */ |
| 150 | get_tmpname(fnametmp, fname); |
| 151 | fd = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS); |
| 152 | } |
| 153 | #endif |
| 154 | |
| 155 | if (fd == -1) { |
| 156 | rsyserr(FERROR_XFER, errno, "mkstemp %s failed", |
| 157 | full_fname(fnametmp)); |
| 158 | return -1; |
| 159 | } |
| 160 | |
| 161 | return fd; |
| 162 | } |
| 163 | |
| 164 | static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r, |
| 165 | const char *fname, int fd, OFF_T total_size) |
| 166 | { |
| 167 | static char file_sum1[MAX_DIGEST_LEN]; |
| 168 | struct map_struct *mapbuf; |
| 169 | struct sum_struct sum; |
| 170 | int32 len; |
| 171 | OFF_T offset = 0; |
| 172 | OFF_T offset2; |
| 173 | char *data; |
| 174 | int32 i; |
| 175 | char *map = NULL; |
| 176 | |
| 177 | read_sum_head(f_in, &sum); |
| 178 | |
| 179 | if (fd_r >= 0 && size_r > 0) { |
| 180 | int32 read_size = MAX(sum.blength * 2, 16*1024); |
| 181 | mapbuf = map_file(fd_r, size_r, read_size, sum.blength); |
| 182 | if (DEBUG_GTE(DELTASUM, 2)) { |
| 183 | rprintf(FINFO, "recv mapped %s of size %s\n", |
| 184 | fname_r, big_num(size_r, 0)); |
| 185 | } |
| 186 | } else |
| 187 | mapbuf = NULL; |
| 188 | |
| 189 | sum_init(checksum_seed); |
| 190 | |
| 191 | if (append_mode > 0) { |
| 192 | OFF_T j; |
| 193 | sum.flength = (OFF_T)sum.count * sum.blength; |
| 194 | if (sum.remainder) |
| 195 | sum.flength -= sum.blength - sum.remainder; |
| 196 | if (append_mode == 2) { |
| 197 | for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) { |
| 198 | if (INFO_GTE(PROGRESS, 1)) |
| 199 | show_progress(offset, total_size); |
| 200 | sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE), |
| 201 | CHUNK_SIZE); |
| 202 | offset = j; |
| 203 | } |
| 204 | if (offset < sum.flength) { |
| 205 | int32 len = (int32)(sum.flength - offset); |
| 206 | if (INFO_GTE(PROGRESS, 1)) |
| 207 | show_progress(offset, total_size); |
| 208 | sum_update(map_ptr(mapbuf, offset, len), len); |
| 209 | } |
| 210 | } |
| 211 | offset = sum.flength; |
| 212 | if (fd != -1 && (j = do_lseek(fd, offset, SEEK_SET)) != offset) { |
| 213 | rsyserr(FERROR_XFER, errno, "lseek of %s returned %s, not %s", |
| 214 | full_fname(fname), big_num(j, 0), big_num(offset, 0)); |
| 215 | exit_cleanup(RERR_FILEIO); |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | while ((i = recv_token(f_in, &data)) != 0) { |
| 220 | if (INFO_GTE(PROGRESS, 1)) |
| 221 | show_progress(offset, total_size); |
| 222 | |
| 223 | if (i > 0) { |
| 224 | if (DEBUG_GTE(DELTASUM, 3)) { |
| 225 | rprintf(FINFO,"data recv %d at %s\n", |
| 226 | i, big_num(offset, 0)); |
| 227 | } |
| 228 | |
| 229 | stats.literal_data += i; |
| 230 | cleanup_got_literal = 1; |
| 231 | |
| 232 | sum_update(data, i); |
| 233 | |
| 234 | if (fd != -1 && write_file(fd,data,i) != i) |
| 235 | goto report_write_error; |
| 236 | offset += i; |
| 237 | continue; |
| 238 | } |
| 239 | |
| 240 | i = -(i+1); |
| 241 | offset2 = i * (OFF_T)sum.blength; |
| 242 | len = sum.blength; |
| 243 | if (i == (int)sum.count-1 && sum.remainder != 0) |
| 244 | len = sum.remainder; |
| 245 | |
| 246 | stats.matched_data += len; |
| 247 | |
| 248 | if (DEBUG_GTE(DELTASUM, 3)) { |
| 249 | rprintf(FINFO, |
| 250 | "chunk[%d] of size %ld at %s offset=%s\n", |
| 251 | i, (long)len, big_num(offset2, 0), big_num(offset, 0)); |
| 252 | } |
| 253 | |
| 254 | if (mapbuf) { |
| 255 | map = map_ptr(mapbuf,offset2,len); |
| 256 | |
| 257 | see_token(map, len); |
| 258 | sum_update(map, len); |
| 259 | } |
| 260 | |
| 261 | if (updating_basis_or_equiv) { |
| 262 | if (offset == offset2 && fd != -1) { |
| 263 | OFF_T pos; |
| 264 | if (flush_write_file(fd) < 0) |
| 265 | goto report_write_error; |
| 266 | offset += len; |
| 267 | if ((pos = do_lseek(fd, len, SEEK_CUR)) != offset) { |
| 268 | rsyserr(FERROR_XFER, errno, |
| 269 | "lseek of %s returned %s, not %s", |
| 270 | full_fname(fname), |
| 271 | big_num(pos, 0), big_num(offset, 0)); |
| 272 | exit_cleanup(RERR_FILEIO); |
| 273 | } |
| 274 | continue; |
| 275 | } |
| 276 | } |
| 277 | if (fd != -1 && map && write_file(fd, map, len) != (int)len) |
| 278 | goto report_write_error; |
| 279 | offset += len; |
| 280 | } |
| 281 | |
| 282 | if (flush_write_file(fd) < 0) |
| 283 | goto report_write_error; |
| 284 | |
| 285 | #ifdef HAVE_FTRUNCATE |
| 286 | if (inplace && fd != -1) |
| 287 | ftruncate(fd, offset); |
| 288 | #endif |
| 289 | |
| 290 | if (INFO_GTE(PROGRESS, 1)) |
| 291 | end_progress(total_size); |
| 292 | |
| 293 | if (fd != -1 && offset > 0 && sparse_end(fd) != 0) { |
| 294 | report_write_error: |
| 295 | rsyserr(FERROR_XFER, errno, "write failed on %s", |
| 296 | full_fname(fname)); |
| 297 | exit_cleanup(RERR_FILEIO); |
| 298 | } |
| 299 | |
| 300 | if (sum_end(file_sum1) != checksum_len) |
| 301 | overflow_exit("checksum_len"); /* Impossible... */ |
| 302 | |
| 303 | if (mapbuf) |
| 304 | unmap_file(mapbuf); |
| 305 | |
| 306 | read_buf(f_in, sender_file_sum, checksum_len); |
| 307 | if (DEBUG_GTE(DELTASUM, 2)) |
| 308 | rprintf(FINFO,"got file_sum\n"); |
| 309 | if (fd != -1 && memcmp(file_sum1, sender_file_sum, checksum_len) != 0) |
| 310 | return 0; |
| 311 | return 1; |
| 312 | } |
| 313 | |
| 314 | |
| 315 | static void discard_receive_data(int f_in, OFF_T length) |
| 316 | { |
| 317 | receive_data(f_in, NULL, -1, 0, NULL, -1, length); |
| 318 | } |
| 319 | |
| 320 | static void handle_delayed_updates(char *local_name) |
| 321 | { |
| 322 | char *fname, *partialptr; |
| 323 | int ndx; |
| 324 | |
| 325 | for (ndx = -1; (ndx = bitbag_next_bit(delayed_bits, ndx)) >= 0; ) { |
| 326 | struct file_struct *file = cur_flist->files[ndx]; |
| 327 | fname = local_name ? local_name : f_name(file, NULL); |
| 328 | if ((partialptr = partial_dir_fname(fname)) != NULL) { |
| 329 | if (make_backups > 0 && !make_backup(fname)) |
| 330 | continue; |
| 331 | if (DEBUG_GTE(RECV, 1)) { |
| 332 | rprintf(FINFO, "renaming %s to %s\n", |
| 333 | partialptr, fname); |
| 334 | } |
| 335 | /* We don't use robust_rename() here because the |
| 336 | * partial-dir must be on the same drive. */ |
| 337 | if (do_rename(partialptr, fname) < 0) { |
| 338 | rsyserr(FERROR_XFER, errno, |
| 339 | "rename failed for %s (from %s)", |
| 340 | full_fname(fname), partialptr); |
| 341 | } else { |
| 342 | if (remove_source_files |
| 343 | || (preserve_hard_links && F_IS_HLINKED(file))) |
| 344 | send_msg_int(MSG_SUCCESS, ndx); |
| 345 | handle_partial_dir(partialptr, PDIR_DELETE); |
| 346 | } |
| 347 | } |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | static int get_next_gen_ndx(int fd, int next_gen_ndx, int desired_ndx) |
| 352 | { |
| 353 | while (next_gen_ndx < desired_ndx) { |
| 354 | if (next_gen_ndx >= 0) { |
| 355 | struct file_struct *file = cur_flist->files[next_gen_ndx]; |
| 356 | rprintf(FERROR_XFER, |
| 357 | "(No batched update for%s \"%s\")\n", |
| 358 | file->flags & FLAG_FILE_SENT ? " resend of" : "", |
| 359 | f_name(file, NULL)); |
| 360 | } |
| 361 | next_gen_ndx = read_int(fd); |
| 362 | if (next_gen_ndx == -1) { |
| 363 | if (inc_recurse) |
| 364 | next_gen_ndx = first_flist->prev->used + first_flist->prev->ndx_start; |
| 365 | else |
| 366 | next_gen_ndx = cur_flist->used; |
| 367 | } |
| 368 | } |
| 369 | return next_gen_ndx; |
| 370 | } |
| 371 | |
| 372 | /** |
| 373 | * main routine for receiver process. |
| 374 | * |
| 375 | * Receiver process runs on the same host as the generator process. */ |
| 376 | int recv_files(int f_in, char *local_name) |
| 377 | { |
| 378 | int next_gen_ndx = -1; |
| 379 | int fd1,fd2; |
| 380 | STRUCT_STAT st; |
| 381 | int iflags, xlen; |
| 382 | char *fname, fbuf[MAXPATHLEN]; |
| 383 | char xname[MAXPATHLEN]; |
| 384 | char fnametmp[MAXPATHLEN]; |
| 385 | char *fnamecmp, *partialptr; |
| 386 | char fnamecmpbuf[MAXPATHLEN]; |
| 387 | uchar fnamecmp_type; |
| 388 | struct file_struct *file; |
| 389 | struct stats initial_stats; |
| 390 | int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i; |
| 391 | enum logcode log_code = log_before_transfer ? FLOG : FINFO; |
| 392 | int max_phase = protocol_version >= 29 ? 2 : 1; |
| 393 | int dflt_perms = (ACCESSPERMS & ~orig_umask); |
| 394 | #ifdef SUPPORT_ACLS |
| 395 | const char *parent_dirname = ""; |
| 396 | #endif |
| 397 | int ndx, recv_ok; |
| 398 | |
| 399 | if (DEBUG_GTE(RECV, 1)) |
| 400 | rprintf(FINFO, "recv_files(%d) starting\n", cur_flist->used); |
| 401 | |
| 402 | if (delay_updates) |
| 403 | delayed_bits = bitbag_create(cur_flist->used + 1); |
| 404 | |
| 405 | while (1) { |
| 406 | cleanup_disable(); |
| 407 | |
| 408 | /* This call also sets cur_flist. */ |
| 409 | ndx = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type, |
| 410 | xname, &xlen); |
| 411 | if (ndx == NDX_DONE) { |
| 412 | if (!am_server && INFO_GTE(PROGRESS, 2) && cur_flist) { |
| 413 | set_current_file_index(NULL, 0); |
| 414 | end_progress(0); |
| 415 | } |
| 416 | if (inc_recurse && first_flist) { |
| 417 | flist_free(first_flist); |
| 418 | if (first_flist) |
| 419 | continue; |
| 420 | } |
| 421 | if (read_batch && cur_flist) { |
| 422 | int high = inc_recurse |
| 423 | ? first_flist->prev->used + first_flist->prev->ndx_start |
| 424 | : cur_flist->used; |
| 425 | get_next_gen_ndx(batch_gen_fd, next_gen_ndx, high); |
| 426 | next_gen_ndx = -1; |
| 427 | } |
| 428 | if (++phase > max_phase) |
| 429 | break; |
| 430 | if (DEBUG_GTE(RECV, 1)) |
| 431 | rprintf(FINFO, "recv_files phase=%d\n", phase); |
| 432 | if (phase == 2 && delay_updates) |
| 433 | handle_delayed_updates(local_name); |
| 434 | send_msg(MSG_DONE, "", 0, 0); |
| 435 | continue; |
| 436 | } |
| 437 | |
| 438 | if (ndx - cur_flist->ndx_start >= 0) |
| 439 | file = cur_flist->files[ndx - cur_flist->ndx_start]; |
| 440 | else |
| 441 | file = dir_flist->files[cur_flist->parent_ndx]; |
| 442 | fname = local_name ? local_name : f_name(file, fbuf); |
| 443 | |
| 444 | if (DEBUG_GTE(RECV, 1)) |
| 445 | rprintf(FINFO, "recv_files(%s)\n", fname); |
| 446 | |
| 447 | #ifdef SUPPORT_XATTRS |
| 448 | if (iflags & ITEM_REPORT_XATTR && !dry_run) |
| 449 | recv_xattr_request(file, f_in); |
| 450 | #endif |
| 451 | |
| 452 | if (!(iflags & ITEM_TRANSFER)) { |
| 453 | maybe_log_item(file, iflags, itemizing, xname); |
| 454 | #ifdef SUPPORT_XATTRS |
| 455 | if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && !dry_run) |
| 456 | set_file_attrs(fname, file, NULL, fname, 0); |
| 457 | #endif |
| 458 | continue; |
| 459 | } |
| 460 | if (phase == 2) { |
| 461 | rprintf(FERROR, |
| 462 | "got transfer request in phase 2 [%s]\n", |
| 463 | who_am_i()); |
| 464 | exit_cleanup(RERR_PROTOCOL); |
| 465 | } |
| 466 | |
| 467 | if (file->flags & FLAG_FILE_SENT) { |
| 468 | if (csum_length == SHORT_SUM_LENGTH) { |
| 469 | if (keep_partial && !partial_dir) |
| 470 | make_backups = -make_backups; /* prevents double backup */ |
| 471 | if (append_mode) |
| 472 | sparse_files = -sparse_files; |
| 473 | append_mode = -append_mode; |
| 474 | csum_length = SUM_LENGTH; |
| 475 | redoing = 1; |
| 476 | } |
| 477 | } else { |
| 478 | if (csum_length != SHORT_SUM_LENGTH) { |
| 479 | if (keep_partial && !partial_dir) |
| 480 | make_backups = -make_backups; |
| 481 | if (append_mode) |
| 482 | sparse_files = -sparse_files; |
| 483 | append_mode = -append_mode; |
| 484 | csum_length = SHORT_SUM_LENGTH; |
| 485 | redoing = 0; |
| 486 | } |
| 487 | } |
| 488 | |
| 489 | if (!am_server && INFO_GTE(PROGRESS, 1)) |
| 490 | set_current_file_index(file, ndx); |
| 491 | stats.num_transferred_files++; |
| 492 | stats.total_transferred_size += F_LENGTH(file); |
| 493 | |
| 494 | cleanup_got_literal = 0; |
| 495 | |
| 496 | if (daemon_filter_list.head |
| 497 | && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0) { |
| 498 | rprintf(FERROR, "attempt to hack rsync failed.\n"); |
| 499 | exit_cleanup(RERR_PROTOCOL); |
| 500 | } |
| 501 | |
| 502 | if (!do_xfers) { /* log the transfer */ |
| 503 | log_item(FCLIENT, file, &stats, iflags, NULL); |
| 504 | if (read_batch) |
| 505 | discard_receive_data(f_in, F_LENGTH(file)); |
| 506 | continue; |
| 507 | } |
| 508 | if (write_batch < 0) { |
| 509 | log_item(FCLIENT, file, &stats, iflags, NULL); |
| 510 | if (!am_server) |
| 511 | discard_receive_data(f_in, F_LENGTH(file)); |
| 512 | continue; |
| 513 | } |
| 514 | |
| 515 | if (read_batch) { |
| 516 | next_gen_ndx = get_next_gen_ndx(batch_gen_fd, next_gen_ndx, ndx); |
| 517 | if (ndx < next_gen_ndx) { |
| 518 | rprintf(FINFO, |
| 519 | "(Skipping batched update for \"%s\")\n", |
| 520 | fname); |
| 521 | discard_receive_data(f_in, F_LENGTH(file)); |
| 522 | if (inc_recurse) |
| 523 | send_msg_int(MSG_NO_SEND, ndx); |
| 524 | continue; |
| 525 | } |
| 526 | next_gen_ndx = -1; |
| 527 | } |
| 528 | |
| 529 | partialptr = partial_dir ? partial_dir_fname(fname) : fname; |
| 530 | |
| 531 | if (protocol_version >= 29) { |
| 532 | switch (fnamecmp_type) { |
| 533 | case FNAMECMP_FNAME: |
| 534 | fnamecmp = fname; |
| 535 | break; |
| 536 | case FNAMECMP_PARTIAL_DIR: |
| 537 | fnamecmp = partialptr; |
| 538 | break; |
| 539 | case FNAMECMP_BACKUP: |
| 540 | fnamecmp = get_backup_name(fname); |
| 541 | break; |
| 542 | case FNAMECMP_FUZZY: |
| 543 | if (file->dirname) { |
| 544 | pathjoin(fnamecmpbuf, MAXPATHLEN, |
| 545 | file->dirname, xname); |
| 546 | fnamecmp = fnamecmpbuf; |
| 547 | } else |
| 548 | fnamecmp = xname; |
| 549 | break; |
| 550 | default: |
| 551 | if (fnamecmp_type >= basis_dir_cnt) { |
| 552 | rprintf(FERROR, |
| 553 | "invalid basis_dir index: %d.\n", |
| 554 | fnamecmp_type); |
| 555 | exit_cleanup(RERR_PROTOCOL); |
| 556 | } |
| 557 | pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, |
| 558 | basis_dir[fnamecmp_type], fname); |
| 559 | fnamecmp = fnamecmpbuf; |
| 560 | break; |
| 561 | } |
| 562 | if (!fnamecmp || (daemon_filter_list.head |
| 563 | && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0)) { |
| 564 | fnamecmp = fname; |
| 565 | fnamecmp_type = FNAMECMP_FNAME; |
| 566 | } |
| 567 | } else { |
| 568 | /* Reminder: --inplace && --partial-dir are never |
| 569 | * enabled at the same time. */ |
| 570 | if (inplace && make_backups > 0) { |
| 571 | if (!(fnamecmp = get_backup_name(fname))) |
| 572 | fnamecmp = fname; |
| 573 | else |
| 574 | fnamecmp_type = FNAMECMP_BACKUP; |
| 575 | } else if (partial_dir && partialptr) |
| 576 | fnamecmp = partialptr; |
| 577 | else |
| 578 | fnamecmp = fname; |
| 579 | } |
| 580 | |
| 581 | initial_stats = stats; |
| 582 | |
| 583 | /* open the file */ |
| 584 | fd1 = do_open(fnamecmp, O_RDONLY, 0); |
| 585 | |
| 586 | if (fd1 == -1 && protocol_version < 29) { |
| 587 | if (fnamecmp != fname) { |
| 588 | fnamecmp = fname; |
| 589 | fd1 = do_open(fnamecmp, O_RDONLY, 0); |
| 590 | } |
| 591 | |
| 592 | if (fd1 == -1 && basis_dir[0]) { |
| 593 | /* pre-29 allowed only one alternate basis */ |
| 594 | pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, |
| 595 | basis_dir[0], fname); |
| 596 | fnamecmp = fnamecmpbuf; |
| 597 | fd1 = do_open(fnamecmp, O_RDONLY, 0); |
| 598 | } |
| 599 | } |
| 600 | |
| 601 | updating_basis_or_equiv = inplace |
| 602 | && (fnamecmp == fname || fnamecmp_type == FNAMECMP_BACKUP); |
| 603 | |
| 604 | if (fd1 == -1) { |
| 605 | st.st_mode = 0; |
| 606 | st.st_size = 0; |
| 607 | } else if (do_fstat(fd1,&st) != 0) { |
| 608 | rsyserr(FERROR_XFER, errno, "fstat %s failed", |
| 609 | full_fname(fnamecmp)); |
| 610 | discard_receive_data(f_in, F_LENGTH(file)); |
| 611 | close(fd1); |
| 612 | if (inc_recurse) |
| 613 | send_msg_int(MSG_NO_SEND, ndx); |
| 614 | continue; |
| 615 | } |
| 616 | |
| 617 | if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) { |
| 618 | /* this special handling for directories |
| 619 | * wouldn't be necessary if robust_rename() |
| 620 | * and the underlying robust_unlink could cope |
| 621 | * with directories |
| 622 | */ |
| 623 | rprintf(FERROR_XFER, "recv_files: %s is a directory\n", |
| 624 | full_fname(fnamecmp)); |
| 625 | discard_receive_data(f_in, F_LENGTH(file)); |
| 626 | close(fd1); |
| 627 | if (inc_recurse) |
| 628 | send_msg_int(MSG_NO_SEND, ndx); |
| 629 | continue; |
| 630 | } |
| 631 | |
| 632 | if (fd1 != -1 && !S_ISREG(st.st_mode)) { |
| 633 | close(fd1); |
| 634 | fd1 = -1; |
| 635 | } |
| 636 | |
| 637 | /* If we're not preserving permissions, change the file-list's |
| 638 | * mode based on the local permissions and some heuristics. */ |
| 639 | if (!preserve_perms) { |
| 640 | int exists = fd1 != -1; |
| 641 | #ifdef SUPPORT_ACLS |
| 642 | const char *dn = file->dirname ? file->dirname : "."; |
| 643 | if (parent_dirname != dn |
| 644 | && strcmp(parent_dirname, dn) != 0) { |
| 645 | dflt_perms = default_perms_for_dir(dn); |
| 646 | parent_dirname = dn; |
| 647 | } |
| 648 | #endif |
| 649 | file->mode = dest_mode(file->mode, st.st_mode, |
| 650 | dflt_perms, exists); |
| 651 | } |
| 652 | |
| 653 | /* We now check to see if we are writing the file "inplace" */ |
| 654 | if (inplace) { |
| 655 | fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600); |
| 656 | if (fd2 == -1) { |
| 657 | rsyserr(FERROR_XFER, errno, "open %s failed", |
| 658 | full_fname(fname)); |
| 659 | } |
| 660 | } else { |
| 661 | fd2 = open_tmpfile(fnametmp, fname, file); |
| 662 | if (fd2 != -1) |
| 663 | cleanup_set(fnametmp, partialptr, file, fd1, fd2); |
| 664 | } |
| 665 | |
| 666 | if (fd2 == -1) { |
| 667 | discard_receive_data(f_in, F_LENGTH(file)); |
| 668 | if (fd1 != -1) |
| 669 | close(fd1); |
| 670 | if (inc_recurse) |
| 671 | send_msg_int(MSG_NO_SEND, ndx); |
| 672 | continue; |
| 673 | } |
| 674 | |
| 675 | /* log the transfer */ |
| 676 | if (log_before_transfer) |
| 677 | log_item(FCLIENT, file, &initial_stats, iflags, NULL); |
| 678 | else if (!am_server && INFO_GTE(NAME, 1) && INFO_EQ(PROGRESS, 1)) |
| 679 | rprintf(FINFO, "%s\n", fname); |
| 680 | |
| 681 | /* recv file data */ |
| 682 | recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size, |
| 683 | fname, fd2, F_LENGTH(file)); |
| 684 | |
| 685 | log_item(log_code, file, &initial_stats, iflags, NULL); |
| 686 | |
| 687 | if (fd1 != -1) |
| 688 | close(fd1); |
| 689 | if (close(fd2) < 0) { |
| 690 | rsyserr(FERROR, errno, "close failed on %s", |
| 691 | full_fname(fnametmp)); |
| 692 | exit_cleanup(RERR_FILEIO); |
| 693 | } |
| 694 | |
| 695 | if ((recv_ok && (!delay_updates || !partialptr)) || inplace) { |
| 696 | if (partialptr == fname) |
| 697 | partialptr = NULL; |
| 698 | if (!finish_transfer(fname, fnametmp, fnamecmp, |
| 699 | partialptr, file, recv_ok, 1)) |
| 700 | recv_ok = -1; |
| 701 | else if (fnamecmp == partialptr) { |
| 702 | do_unlink(partialptr); |
| 703 | handle_partial_dir(partialptr, PDIR_DELETE); |
| 704 | } |
| 705 | } else if (keep_partial && partialptr) { |
| 706 | if (!handle_partial_dir(partialptr, PDIR_CREATE)) { |
| 707 | rprintf(FERROR, |
| 708 | "Unable to create partial-dir for %s -- discarding %s.\n", |
| 709 | local_name ? local_name : f_name(file, NULL), |
| 710 | recv_ok ? "completed file" : "partial file"); |
| 711 | do_unlink(fnametmp); |
| 712 | recv_ok = -1; |
| 713 | } else if (!finish_transfer(partialptr, fnametmp, fnamecmp, NULL, |
| 714 | file, recv_ok, !partial_dir)) |
| 715 | recv_ok = -1; |
| 716 | else if (delay_updates && recv_ok) { |
| 717 | bitbag_set_bit(delayed_bits, ndx); |
| 718 | recv_ok = 2; |
| 719 | } else |
| 720 | partialptr = NULL; |
| 721 | } else |
| 722 | do_unlink(fnametmp); |
| 723 | |
| 724 | cleanup_disable(); |
| 725 | |
| 726 | switch (recv_ok) { |
| 727 | case 2: |
| 728 | break; |
| 729 | case 1: |
| 730 | if (remove_source_files || inc_recurse |
| 731 | || (preserve_hard_links && F_IS_HLINKED(file))) |
| 732 | send_msg_int(MSG_SUCCESS, ndx); |
| 733 | break; |
| 734 | case 0: { |
| 735 | enum logcode msgtype = redoing ? FERROR_XFER : FWARNING; |
| 736 | if (msgtype == FERROR_XFER || INFO_GTE(NAME, 1)) { |
| 737 | char *errstr, *redostr, *keptstr; |
| 738 | if (!(keep_partial && partialptr) && !inplace) |
| 739 | keptstr = "discarded"; |
| 740 | else if (partial_dir) |
| 741 | keptstr = "put into partial-dir"; |
| 742 | else |
| 743 | keptstr = "retained"; |
| 744 | if (msgtype == FERROR_XFER) { |
| 745 | errstr = "ERROR"; |
| 746 | redostr = ""; |
| 747 | } else { |
| 748 | errstr = "WARNING"; |
| 749 | redostr = read_batch ? " (may try again)" |
| 750 | : " (will try again)"; |
| 751 | } |
| 752 | rprintf(msgtype, |
| 753 | "%s: %s failed verification -- update %s%s.\n", |
| 754 | errstr, local_name ? f_name(file, NULL) : fname, |
| 755 | keptstr, redostr); |
| 756 | } |
| 757 | if (!redoing) { |
| 758 | send_msg_int(MSG_REDO, ndx); |
| 759 | file->flags |= FLAG_FILE_SENT; |
| 760 | } else if (inc_recurse) |
| 761 | send_msg_int(MSG_NO_SEND, ndx); |
| 762 | break; |
| 763 | } |
| 764 | case -1: |
| 765 | if (inc_recurse) |
| 766 | send_msg_int(MSG_NO_SEND, ndx); |
| 767 | break; |
| 768 | } |
| 769 | } |
| 770 | if (make_backups < 0) |
| 771 | make_backups = -make_backups; |
| 772 | |
| 773 | if (phase == 2 && delay_updates) /* for protocol_version < 29 */ |
| 774 | handle_delayed_updates(local_name); |
| 775 | |
| 776 | if (DEBUG_GTE(RECV, 1)) |
| 777 | rprintf(FINFO,"recv_files finished\n"); |
| 778 | |
| 779 | return 0; |
| 780 | } |