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GeezerVison is showing github.com — rsync/exclude.c at master · AndyA/rsync Expand file tree/ Copy pathexclude.cMore file actions 1405 lines (1270 loc) · 40.4 KB / Copy pathexclude.cFile metadata and controls1405 lines (1270 loc) · 40.4 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 /* * The filter include/exclude routines. * * Copyright (C) 1996-2001 Andrew Tridgell <[email protected]> * Copyright (C) 1996 Paul Mackerras * Copyright (C) 2002 Martin Pool * Copyright (C) 2003-2009 Wayne Davison * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, visit the http://fsf.org website. */ #include "rsync.h" extern int am_server; extern int am_sender; extern int eol_nulls; extern int io_error; extern int local_server; extern int prune_empty_dirs; extern int ignore_perishable; extern int delete_mode; extern int delete_excluded; extern int cvs_exclude; extern int sanitize_paths; extern int protocol_version; extern int module_id; extern char curr_dir[MAXPATHLEN]; extern unsigned int curr_dir_len; extern unsigned int module_dirlen; filter_rule_list filter_list = { .debug_type = "" }; filter_rule_list cvs_filter_list = { .debug_type = " [global CVS]" }; filter_rule_list daemon_filter_list = { .debug_type = " [daemon]" }; /* Need room enough for ":MODS " prefix plus some room to grow. */ #define MAX_RULE_PREFIX (16) #define SLASH_WILD3_SUFFIX "/***" /* The dirbuf is set by push_local_filters() to the current subdirectory * relative to curr_dir that is being processed. The path always has a * trailing slash appended, and the variable dirbuf_len contains the length * of this path prefix. The path is always absolute. */ static char dirbuf[MAXPATHLEN+1]; static unsigned int dirbuf_len = 0; static int dirbuf_depth; /* This is True when we're scanning parent dirs for per-dir merge-files. */ static BOOL parent_dirscan = False; /* This array contains a list of all the currently active per-dir merge * files. This makes it easier to save the appropriate values when we * "push" down into each subdirectory. */ static filter_rule **mergelist_parents; static int mergelist_cnt = 0; static int mergelist_size = 0; /* Each filter_list_struct describes a singly-linked list by keeping track * of both the head and tail pointers. The list is slightly unusual in that * a parent-dir's content can be appended to the end of the local list in a * special way: the last item in the local list has its "next" pointer set * to point to the inherited list, but the local list's tail pointer points * at the end of the local list. Thus, if the local list is empty, the head * will be pointing at the inherited content but the tail will be NULL. To * help you visualize this, here are the possible list arrangements: * * Completely Empty Local Content Only * ================================== ==================================== * head -> NULL head -> Local1 -> Local2 -> NULL * tail -> NULL tail -------------^ * * Inherited Content Only Both Local and Inherited Content * ================================== ==================================== * head -> Parent1 -> Parent2 -> NULL head -> L1 -> L2 -> P1 -> P2 -> NULL * tail -> NULL tail ---------^ * * This means that anyone wanting to traverse the whole list to use it just * needs to start at the head and use the "next" pointers until it goes * NULL. To add new local content, we insert the item after the tail item * and update the tail (obviously, if "tail" was NULL, we insert it at the * head). To clear the local list, WE MUST NOT FREE THE INHERITED CONTENT * because it is shared between the current list and our parent list(s). * The easiest way to handle this is to simply truncate the list after the * tail item and then free the local list from the head. When inheriting * the list for a new local dir, we just save off the filter_list_struct * values (so we can pop back to them later) and set the tail to NULL. */ static void teardown_mergelist(filter_rule *ex) { if (DEBUG_GTE(FILTER, 2)) { rprintf(FINFO, "[%s] deactivating mergelist #%d%s\n", who_am_i(), mergelist_cnt - 1, ex->u.mergelist->debug_type); } /* We should deactivate mergelists in LIFO order. */ assert(mergelist_cnt > 0); assert(ex == mergelist_parents[mergelist_cnt - 1]); /* The parent_dirscan filters should have been freed. */ assert(ex->u.mergelist->parent_dirscan_head == NULL); free(ex->u.mergelist->debug_type); free(ex->u.mergelist); mergelist_cnt--; } static void free_filter(filter_rule *ex) { free(ex->pattern); free(ex); } static void free_filters(filter_rule *head) { filter_rule *rev_head = NULL; /* Reverse the list so we deactivate mergelists in the proper LIFO * order. */ while (head) { filter_rule *next = head->next; head->next = rev_head; rev_head = head; head = next; } while (rev_head) { filter_rule *prev = rev_head->next; /* Tear down mergelists here, not in free_filter, so that we * affect only real filter lists and not temporarily allocated * filters. */ if (rev_head->rflags & FILTRULE_PERDIR_MERGE) teardown_mergelist(rev_head); free_filter(rev_head); rev_head = prev; } } /* Build a filter structure given a filter pattern. The value in "pat" * is not null-terminated. "rule" is either held or freed, so the * caller should not free it. */ static void add_rule(filter_rule_list *listp, const char *pat, unsigned int pat_len, filter_rule *rule, int xflags) { const char *cp; unsigned int pre_len, suf_len, slash_cnt = 0; if (DEBUG_GTE(FILTER, 2)) { rprintf(FINFO, "[%s] add_rule(%s%.*s%s)%s\n", who_am_i(), get_rule_prefix(rule, pat, 0, NULL), (int)pat_len, pat, (rule->rflags & FILTRULE_DIRECTORY) ? "/" : "", listp->debug_type); } /* These flags also indicate that we're reading a list that * needs to be filtered now, not post-filtered later. */ if (xflags & (XFLG_ANCHORED2ABS|XFLG_ABS_IF_SLASH) && (rule->rflags & FILTRULES_SIDES) == (am_sender ? FILTRULE_RECEIVER_SIDE : FILTRULE_SENDER_SIDE)) { /* This filter applies only to the other side. Drop it. */ free_filter(rule); return; } if (pat_len > 1 && pat[pat_len-1] == '/') { pat_len--; rule->rflags |= FILTRULE_DIRECTORY; } for (cp = pat; cp < pat + pat_len; cp++) { if (*cp == '/') slash_cnt++; } if (!(rule->rflags & (FILTRULE_ABS_PATH | FILTRULE_MERGE_FILE)) && ((xflags & (XFLG_ANCHORED2ABS|XFLG_ABS_IF_SLASH) && *pat == '/') || (xflags & XFLG_ABS_IF_SLASH && slash_cnt))) { rule->rflags |= FILTRULE_ABS_PATH; if (*pat == '/') pre_len = dirbuf_len - module_dirlen - 1; else pre_len = 0; } else pre_len = 0; /* The daemon wants dir-exclude rules to get an appended "/" + "***". */ if (xflags & XFLG_DIR2WILD3 && BITS_SETnUNSET(rule->rflags, FILTRULE_DIRECTORY, FILTRULE_INCLUDE)) { rule->rflags &= ~FILTRULE_DIRECTORY; suf_len = sizeof SLASH_WILD3_SUFFIX - 1; } else suf_len = 0; if (!(rule->pattern = new_array(char, pre_len + pat_len + suf_len + 1))) out_of_memory("add_rule"); if (pre_len) { memcpy(rule->pattern, dirbuf + module_dirlen, pre_len); for (cp = rule->pattern; cp < rule->pattern + pre_len; cp++) { if (*cp == '/') slash_cnt++; } } strlcpy(rule->pattern + pre_len, pat, pat_len + 1); pat_len += pre_len; if (suf_len) { memcpy(rule->pattern + pat_len, SLASH_WILD3_SUFFIX, suf_len+1); pat_len += suf_len; slash_cnt++; } if (strpbrk(rule->pattern, "*[?")) { rule->rflags |= FILTRULE_WILD; if ((cp = strstr(rule->pattern, "**")) != NULL) { rule->rflags |= FILTRULE_WILD2; /* If the pattern starts with **, note that. */ if (cp == rule->pattern) rule->rflags |= FILTRULE_WILD2_PREFIX; /* If the pattern ends with ***, note that. */ if (pat_len >= 3 && rule->pattern[pat_len-3] == '*' && rule->pattern[pat_len-2] == '*' && rule->pattern[pat_len-1] == '*') rule->rflags |= FILTRULE_WILD3_SUFFIX; } } if (rule->rflags & FILTRULE_PERDIR_MERGE) { filter_rule_list *lp; unsigned int len; int i; if ((cp = strrchr(rule->pattern, '/')) != NULL) cp++; else cp = rule->pattern; /* If the local merge file was already mentioned, don't * add it again. */ for (i = 0; i < mergelist_cnt; i++) { filter_rule *ex = mergelist_parents[i]; const char *s = strrchr(ex->pattern, '/'); if (s) s++; else s = ex->pattern; len = strlen(s); if (len == pat_len - (cp - rule->pattern) && memcmp(s, cp, len) == 0) { free_filter(rule); return; } } if (!(lp = new_array(filter_rule_list, 1))) out_of_memory("add_rule"); lp->head = lp->tail = lp->parent_dirscan_head = NULL; if (asprintf(&lp->debug_type, " [per-dir %s]", cp) < 0) out_of_memory("add_rule"); rule->u.mergelist = lp; if (mergelist_cnt == mergelist_size) { mergelist_size += 5; mergelist_parents = realloc_array(mergelist_parents, filter_rule *, mergelist_size); if (!mergelist_parents) out_of_memory("add_rule"); } if (DEBUG_GTE(FILTER, 2)) { rprintf(FINFO, "[%s] activating mergelist #%d%s\n", who_am_i(), mergelist_cnt, lp->debug_type); } mergelist_parents[mergelist_cnt++] = rule; } else rule->u.slash_cnt = slash_cnt; if (!listp->tail) { rule->next = listp->head; listp->head = listp->tail = rule; } else { rule->next = listp->tail->next; listp->tail->next = rule; listp->tail = rule; } } static void clear_filter_list(filter_rule_list *listp) { if (listp->tail) { /* Truncate any inherited items from the local list. */ listp->tail->next = NULL; /* Now free everything that is left. */ free_filters(listp->head); } listp->head = listp->tail = NULL; } /* This returns an expanded (absolute) filename for the merge-file name if * the name has any slashes in it OR if the parent_dirscan var is True; * otherwise it returns the original merge_file name. If the len_ptr value * is non-NULL the merge_file name is limited by the referenced length * value and will be updated with the length of the resulting name. We * always return a name that is null terminated, even if the merge_file * name was not. */ static char *parse_merge_name(const char *merge_file, unsigned int *len_ptr, unsigned int prefix_skip) { static char buf[MAXPATHLEN]; char *fn, tmpbuf[MAXPATHLEN]; unsigned int fn_len; if (!parent_dirscan && *merge_file != '/') { /* Return the name unchanged it doesn't have any slashes. */ if (len_ptr) { const char *p = merge_file + *len_ptr; while (--p > merge_file && *p != '/') {} if (p == merge_file) { strlcpy(buf, merge_file, *len_ptr + 1); return buf; } } else if (strchr(merge_file, '/') == NULL) return (char *)merge_file; } fn = *merge_file == '/' ? buf : tmpbuf; if (sanitize_paths) { const char *r = prefix_skip ? "/" : NULL; /* null-terminate the name if it isn't already */ if (len_ptr && merge_file[*len_ptr]) { char *to = fn == buf ? tmpbuf : buf; strlcpy(to, merge_file, *len_ptr + 1); merge_file = to; } if (!sanitize_path(fn, merge_file, r, dirbuf_depth, SP_DEFAULT)) { rprintf(FERROR, "merge-file name overflows: %s\n", merge_file); return NULL; } fn_len = strlen(fn); } else { strlcpy(fn, merge_file, len_ptr ? *len_ptr + 1 : MAXPATHLEN); fn_len = clean_fname(fn, CFN_COLLAPSE_DOT_DOT_DIRS); } /* If the name isn't in buf yet, it's wasn't absolute. */ if (fn != buf) { int d_len = dirbuf_len - prefix_skip; if (d_len + fn_len >= MAXPATHLEN) { rprintf(FERROR, "merge-file name overflows: %s\n", fn); return NULL; } memcpy(buf, dirbuf + prefix_skip, d_len); memcpy(buf + d_len, fn, fn_len + 1); fn_len = clean_fname(buf, CFN_COLLAPSE_DOT_DOT_DIRS); } if (len_ptr) *len_ptr = fn_len; return buf; } /* Sets the dirbuf and dirbuf_len values. */ void set_filter_dir(const char *dir, unsigned int dirlen) { unsigned int len; if (*dir != '/') { memcpy(dirbuf, curr_dir, curr_dir_len); dirbuf[curr_dir_len] = '/'; len = curr_dir_len + 1; if (len + dirlen >= MAXPATHLEN) dirlen = 0; } else len = 0; memcpy(dirbuf + len, dir, dirlen); dirbuf[dirlen + len] = '\0'; dirbuf_len = clean_fname(dirbuf, CFN_COLLAPSE_DOT_DOT_DIRS); if (dirbuf_len > 1 && dirbuf[dirbuf_len-1] == '.' && dirbuf[dirbuf_len-2] == '/') dirbuf_len -= 2; if (dirbuf_len != 1) dirbuf[dirbuf_len++] = '/'; dirbuf[dirbuf_len] = '\0'; if (sanitize_paths) dirbuf_depth = count_dir_elements(dirbuf + module_dirlen); } /* This routine takes a per-dir merge-file entry and finishes its setup. * If the name has a path portion then we check to see if it refers to a * parent directory of the first transfer dir. If it does, we scan all the * dirs from that point through the parent dir of the transfer dir looking * for the per-dir merge-file in each one. */ static BOOL setup_merge_file(int mergelist_num, filter_rule *ex, filter_rule_list *lp) { char buf[MAXPATHLEN]; char *x, *y, *pat = ex->pattern; unsigned int len; if (!(x = parse_merge_name(pat, NULL, 0)) || *x != '/') return 0; if (DEBUG_GTE(FILTER, 2)) { rprintf(FINFO, "[%s] performing parent_dirscan for mergelist #%d%s\n", who_am_i(), mergelist_num, lp->debug_type); } y = strrchr(x, '/'); *y = '\0'; ex->pattern = strdup(y+1); if (!*x) x = "/"; if (*x == '/') strlcpy(buf, x, MAXPATHLEN); else pathjoin(buf, MAXPATHLEN, dirbuf, x); len = clean_fname(buf, CFN_COLLAPSE_DOT_DOT_DIRS); if (len != 1 && len < MAXPATHLEN-1) { buf[len++] = '/'; buf[len] = '\0'; } /* This ensures that the specified dir is a parent of the transfer. */ for (x = buf, y = dirbuf; *x && *x == *y; x++, y++) {} if (*x) y += strlen(y); /* nope -- skip the scan */ parent_dirscan = True; while (*y) { char save[MAXPATHLEN]; strlcpy(save, y, MAXPATHLEN); *y = '\0'; dirbuf_len = y - dirbuf; strlcpy(x, ex->pattern, MAXPATHLEN - (x - buf)); parse_filter_file(lp, buf, ex, XFLG_ANCHORED2ABS); if (ex->rflags & FILTRULE_NO_INHERIT) { /* Free the undesired rules to clean up any per-dir * mergelists they defined. Otherwise pop_local_filters * may crash trying to restore nonexistent state for * those mergelists. */ free_filters(lp->head); lp->head = NULL; } lp->tail = NULL; strlcpy(y, save, MAXPATHLEN); while ((*x++ = *y++) != '/') {} } /* Save current head for freeing when the mergelist becomes inactive. */ lp->parent_dirscan_head = lp->head; parent_dirscan = False; if (DEBUG_GTE(FILTER, 2)) { rprintf(FINFO, "[%s] completed parent_dirscan for mergelist #%d%s\n", who_am_i(), mergelist_num, lp->debug_type); } free(pat); return 1; } struct local_filter_state { int mergelist_cnt; filter_rule_list mergelists[1]; }; /* Each time rsync changes to a new directory it call this function to * handle all the per-dir merge-files. The "dir" value is the current path * relative to curr_dir (which might not be null-terminated). We copy it * into dirbuf so that we can easily append a file name on the end. */ void *push_local_filters(const char *dir, unsigned int dirlen) { struct local_filter_state *push; int i; set_filter_dir(dir, dirlen); if (DEBUG_GTE(FILTER, 2)) { rprintf(FINFO, "[%s] pushing local filters for %s\n", who_am_i(), dirbuf); } if (!mergelist_cnt) { /* No old state to save and no new merge files to push. */ return NULL; } push = (struct local_filter_state *)new_array(char, sizeof (struct local_filter_state) + (mergelist_cnt-1) * sizeof (filter_rule_list)); if (!push) out_of_memory("push_local_filters"); push->mergelist_cnt = mergelist_cnt; for (i = 0; i < mergelist_cnt; i++) { memcpy(&push->mergelists[i], mergelist_parents[i]->u.mergelist, sizeof (filter_rule_list)); } /* Note: parse_filter_file() might increase mergelist_cnt, so keep * this loop separate from the above loop. */ for (i = 0; i < mergelist_cnt; i++) { filter_rule *ex = mergelist_parents[i]; filter_rule_list *lp = ex->u.mergelist; if (DEBUG_GTE(FILTER, 2)) { rprintf(FINFO, "[%s] pushing mergelist #%d%s\n", who_am_i(), i, lp->debug_type); } lp->tail = NULL; /* Switch any local rules to inherited. */ if (ex->rflags & FILTRULE_NO_INHERIT) lp->head = NULL; if (ex->rflags & FILTRULE_FINISH_SETUP) { ex->rflags &= ~FILTRULE_FINISH_SETUP; if (setup_merge_file(i, ex, lp)) set_filter_dir(dir, dirlen); } if (strlcpy(dirbuf + dirbuf_len, ex->pattern, MAXPATHLEN - dirbuf_len) < MAXPATHLEN - dirbuf_len) { parse_filter_file(lp, dirbuf, ex, XFLG_ANCHORED2ABS); } else { io_error |= IOERR_GENERAL; rprintf(FERROR, "cannot add local filter rules in long-named directory: %s\n", full_fname(dirbuf)); } dirbuf[dirbuf_len] = '\0'; } return (void*)push; } void pop_local_filters(void *mem) { struct local_filter_state *pop = (struct local_filter_state *)mem; int i; int old_mergelist_cnt = pop ? pop->mergelist_cnt : 0; if (DEBUG_GTE(FILTER, 2)) rprintf(FINFO, "[%s] popping local filters\n", who_am_i()); for (i = mergelist_cnt; i-- > 0; ) { filter_rule *ex = mergelist_parents[i]; filter_rule_list *lp = ex->u.mergelist; if (DEBUG_GTE(FILTER, 2)) { rprintf(FINFO, "[%s] popping mergelist #%d%s\n", who_am_i(), i, lp->debug_type); } clear_filter_list(lp); if (i >= old_mergelist_cnt) { /* This mergelist does not exist in the state to be * restored. Free its parent_dirscan list to clean up * any per-dir mergelists defined there so we don't * crash trying to restore nonexistent state for them * below. (Counterpart to setup_merge_file call in * push_local_filters. Must be done here, not in * free_filter, for LIFO order.) */ if (DEBUG_GTE(FILTER, 2)) { rprintf(FINFO, "[%s] freeing parent_dirscan filters of mergelist #%d%s\n", who_am_i(), i, ex->u.mergelist->debug_type); } free_filters(lp->parent_dirscan_head); lp->parent_dirscan_head = NULL; } } /* If we cleaned things up properly, the only still-active mergelists * should be those with a state to be restored. */ assert(mergelist_cnt == old_mergelist_cnt); if (!pop) { /* No state to restore. */ return; } for (i = 0; i < mergelist_cnt; i++) { memcpy(mergelist_parents[i]->u.mergelist, &pop->mergelists[i], sizeof (filter_rule_list)); } free(pop); } void change_local_filter_dir(const char *dname, int dlen, int dir_depth) { static int cur_depth = -1; static void *filt_array[MAXPATHLEN/2+1]; if (!dname) { for ( ; cur_depth >= 0; cur_depth--) { if (filt_array[cur_depth]) { pop_local_filters(filt_array[cur_depth]); filt_array[cur_depth] = NULL; } } return; } assert(dir_depth < MAXPATHLEN/2+1); for ( ; cur_depth >= dir_depth; cur_depth--) { if (filt_array[cur_depth]) { pop_local_filters(filt_array[cur_depth]); filt_array[cur_depth] = NULL; } } cur_depth = dir_depth; filt_array[cur_depth] = push_local_filters(dname, dlen); } static int rule_matches(const char *fname, filter_rule *ex, int name_is_dir) { int slash_handling, str_cnt = 0, anchored_match = 0; int ret_match = ex->rflags & FILTRULE_NEGATE ? 0 : 1; char *p, *pattern = ex->pattern; const char *strings[16]; /* more than enough */ const char *name = fname + (*fname == '/'); if (!*name) return 0; if (!ex->u.slash_cnt && !(ex->rflags & FILTRULE_WILD2)) { /* If the pattern does not have any slashes AND it does * not have a "**" (which could match a slash), then we * just match the name portion of the path. */ if ((p = strrchr(name,'/')) != NULL) name = p+1; } else if (ex->rflags & FILTRULE_ABS_PATH && *fname != '/' && curr_dir_len > module_dirlen + 1) { /* If we're matching against an absolute-path pattern, * we need to prepend our full path info. */ strings[str_cnt++] = curr_dir + module_dirlen + 1; strings[str_cnt++] = "/"; } else if (ex->rflags & FILTRULE_WILD2_PREFIX && *fname != '/') { /* Allow "**"+"/" to match at the start of the string. */ strings[str_cnt++] = "/"; } strings[str_cnt++] = name; if (name_is_dir) { /* Allow a trailing "/"+"***" to match the directory. */ if (ex->rflags & FILTRULE_WILD3_SUFFIX) strings[str_cnt++] = "/"; } else if (ex->rflags & FILTRULE_DIRECTORY) return !ret_match; strings[str_cnt] = NULL; if (*pattern == '/') { anchored_match = 1; pattern++; } if (!anchored_match && ex->u.slash_cnt && !(ex->rflags & FILTRULE_WILD2)) { /* A non-anchored match with an infix slash and no "**" * needs to match the last slash_cnt+1 name elements. */ slash_handling = ex->u.slash_cnt + 1; } else if (!anchored_match && !(ex->rflags & FILTRULE_WILD2_PREFIX) && ex->rflags & FILTRULE_WILD2) { /* A non-anchored match with an infix or trailing "**" (but not * a prefixed "**") needs to try matching after every slash. */ slash_handling = -1; } else { /* The pattern matches only at the start of the path or name. */ slash_handling = 0; } if (ex->rflags & FILTRULE_WILD) { if (wildmatch_array(pattern, strings, slash_handling)) return ret_match; } else if (str_cnt > 1) { if (litmatch_array(pattern, strings, slash_handling)) return ret_match; } else if (anchored_match) { if (strcmp(name, pattern) == 0) return ret_match; } else { int l1 = strlen(name); int l2 = strlen(pattern); if (l2 <= l1 && strcmp(name+(l1-l2),pattern) == 0 && (l1==l2 || name[l1-(l2+1)] == '/')) { return ret_match; } } return !ret_match; } static void report_filter_result(enum logcode code, char const *name, filter_rule const *ent, int name_is_dir, const char *type) { /* If a trailing slash is present to match only directories, * then it is stripped out by add_rule(). So as a special * case we add it back in here. */ if (DEBUG_GTE(FILTER, 1)) { static char *actions[2][2] = { {"show", "hid"}, {"risk", "protect"} }; const char *w = who_am_i(); rprintf(code, "[%s] %sing %s %s because of pattern %s%s%s\n", w, actions[*w!='s'][!(ent->rflags & FILTRULE_INCLUDE)], name_is_dir ? "directory" : "file", name, ent->pattern, ent->rflags & FILTRULE_DIRECTORY ? "/" : "", type); } } /* Return -1 if file "name" is defined to be excluded by the specified * exclude list, 1 if it is included, and 0 if it was not matched. */ int check_filter(filter_rule_list *listp, enum logcode code, const char *name, int name_is_dir) { filter_rule *ent; for (ent = listp->head; ent; ent = ent->next) { if (ignore_perishable && ent->rflags & FILTRULE_PERISHABLE) continue; if (ent->rflags & FILTRULE_PERDIR_MERGE) { int rc = check_filter(ent->u.mergelist, code, name, name_is_dir); if (rc) return rc; continue; } if (ent->rflags & FILTRULE_CVS_IGNORE) { int rc = check_filter(&cvs_filter_list, code, name, name_is_dir); if (rc) return rc; continue; } if (rule_matches(name, ent, name_is_dir)) { report_filter_result(code, name, ent, name_is_dir, listp->debug_type); return ent->rflags & FILTRULE_INCLUDE ? 1 : -1; } } return 0; } #define RULE_STRCMP(s,r) rule_strcmp((s), (r), sizeof (r) - 1) static const uchar *rule_strcmp(const uchar *str, const char *rule, int rule_len) { if (strncmp((char*)str, rule, rule_len) != 0) return NULL; if (isspace(str[rule_len]) || str[rule_len] == '_' || !str[rule_len]) return str + rule_len - 1; if (str[rule_len] == ',') return str + rule_len; return NULL; } #define FILTRULES_FROM_CONTAINER (FILTRULE_ABS_PATH | FILTRULE_INCLUDE \ | FILTRULE_DIRECTORY | FILTRULE_NEGATE \ | FILTRULE_PERISHABLE) /* Gets the next include/exclude rule from *rulestr_ptr and advances * *rulestr_ptr to point beyond it. Stores the pattern's start (within * *rulestr_ptr) and length in *pat_ptr and *pat_len_ptr, and returns a newly * allocated filter_rule containing the rest of the information. Returns * NULL if there are no more rules in the input. * * The template provides defaults for the new rule to inherit, and the * template rflags and the xflags additionally affect parsing. */ static filter_rule *parse_rule_tok(const char **rulestr_ptr, const filter_rule *template, int xflags, const char **pat_ptr, unsigned int *pat_len_ptr) { const uchar *s = (const uchar *)*rulestr_ptr; filter_rule *rule; unsigned int len; if (template->rflags & FILTRULE_WORD_SPLIT) { /* Skip over any initial whitespace. */ while (isspace(*s)) s++; /* Update to point to real start of rule. */ *rulestr_ptr = (const char *)s; } if (!*s) return NULL; if (!(rule = new0(filter_rule))) out_of_memory("parse_rule_tok"); /* Inherit from the template. Don't inherit FILTRULES_SIDES; we check * that later. */ rule->rflags = template->rflags & FILTRULES_FROM_CONTAINER; /* Figure out what kind of a filter rule "s" is pointing at. Note * that if FILTRULE_NO_PREFIXES is set, the rule is either an include * or an exclude based on the inheritance of the FILTRULE_INCLUDE * flag (above). XFLG_OLD_PREFIXES indicates a compatibility mode * for old include/exclude patterns where just "+ " and "- " are * allowed as optional prefixes. */ if (template->rflags & FILTRULE_NO_PREFIXES) { if (*s == '!' && template->rflags & FILTRULE_CVS_IGNORE) rule->rflags |= FILTRULE_CLEAR_LIST; /* Tentative! */ } else if (xflags & XFLG_OLD_PREFIXES) { if (*s == '-' && s[1] == ' ') { rule->rflags &= ~FILTRULE_INCLUDE; s += 2; } else if (*s == '+' && s[1] == ' ') { rule->rflags |= FILTRULE_INCLUDE; s += 2; } else if (*s == '!') rule->rflags |= FILTRULE_CLEAR_LIST; /* Tentative! */ } else { char ch = 0; BOOL prefix_specifies_side = False; switch (*s) { case 'c': if ((s = RULE_STRCMP(s, "clear")) != NULL) ch = '!'; break; case 'd': if ((s = RULE_STRCMP(s, "dir-merge")) != NULL) ch = ':'; break; case 'e': if ((s = RULE_STRCMP(s, "exclude")) != NULL) ch = '-'; break; case 'h': if ((s = RULE_STRCMP(s, "hide")) != NULL) ch = 'H'; break; case 'i': if ((s = RULE_STRCMP(s, "include")) != NULL) ch = '+'; break; case 'm': if ((s = RULE_STRCMP(s, "merge")) != NULL) ch = '.'; break; case 'p': if ((s = RULE_STRCMP(s, "protect")) != NULL) ch = 'P'; break; case 'r': if ((s = RULE_STRCMP(s, "risk")) != NULL) ch = 'R'; break; case 's': if ((s = RULE_STRCMP(s, "show")) != NULL) ch = 'S'; break; default: ch = *s; if (s[1] == ',') s++; break; } switch (ch) { case ':': rule->rflags |= FILTRULE_PERDIR_MERGE | FILTRULE_FINISH_SETUP; /* FALL THROUGH */ case '.': rule->rflags |= FILTRULE_MERGE_FILE; break; case '+': rule->rflags |= FILTRULE_INCLUDE; break; case '-': break; case 'S': rule->rflags |= FILTRULE_INCLUDE; /* FALL THROUGH */ case 'H': rule->rflags |= FILTRULE_SENDER_SIDE; prefix_specifies_side = True; break; case 'R': rule->rflags |= FILTRULE_INCLUDE; /* FALL THROUGH */ case 'P': rule->rflags |= FILTRULE_RECEIVER_SIDE; prefix_specifies_side = True; break; case '!': rule->rflags |= FILTRULE_CLEAR_LIST; break; default: rprintf(FERROR, "Unknown filter rule: `%s'\n", *rulestr_ptr); exit_cleanup(RERR_SYNTAX); } while (ch != '!' && *++s && *s != ' ' && *s != '_') { if (template->rflags & FILTRULE_WORD_SPLIT && isspace(*s)) { s--; break; } switch (*s) { default: invalid: rprintf(FERROR, "invalid modifier '%c' at position %d in filter rule: %s\n", *s, (int)(s - (const uchar *)*rulestr_ptr), *rulestr_ptr); exit_cleanup(RERR_SYNTAX); case '-': if (!BITS_SETnUNSET(rule->rflags, FILTRULE_MERGE_FILE, FILTRULE_NO_PREFIXES)) goto invalid; rule->rflags |= FILTRULE_NO_PREFIXES; break; case '+': if (!BITS_SETnUNSET(rule->rflags, FILTRULE_MERGE_FILE, FILTRULE_NO_PREFIXES)) goto invalid; rule->rflags |= FILTRULE_NO_PREFIXES | FILTRULE_INCLUDE; break; case '/': rule->rflags |= FILTRULE_ABS_PATH; break; case '!': /* Negation really goes with the pattern, so it * isn't useful as a merge-file default. */ if (rule->rflags & FILTRULE_MERGE_FILE) goto invalid; rule->rflags |= FILTRULE_NEGATE; break; case 'C': if (rule->rflags & FILTRULE_NO_PREFIXES || prefix_specifies_side) goto invalid; rule->rflags |= FILTRULE_NO_PREFIXES | FILTRULE_WORD_SPLIT | FILTRULE_NO_INHERIT | FILTRULE_CVS_IGNORE; break; case 'e': if (!(rule->rflags & FILTRULE_MERGE_FILE)) goto invalid; rule->rflags |= FILTRULE_EXCLUDE_SELF; break; case 'n': if (!(rule->rflags & FILTRULE_MERGE_FILE)) goto invalid; rule->rflags |= FILTRULE_NO_INHERIT; break; case 'p': rule->rflags |= FILTRULE_PERISHABLE; break; case 'r': if (prefix_specifies_side) goto invalid; rule->rflags |= FILTRULE_RECEIVER_SIDE; break; case 's': if (prefix_specifies_side) goto invalid; rule->rflags |= FILTRULE_SENDER_SIDE; break; case 'w': if (!(rule->rflags & FILTRULE_MERGE_FILE)) goto invalid; rule->rflags |= FILTRULE_WORD_SPLIT; break; } } if (*s) s++; } if (template->rflags & FILTRULES_SIDES) { if (rule->rflags & FILTRULES_SIDES) { /* The filter and template both specify side(s). This * is dodgy (and won't work correctly if the template is * a one-sided per-dir merge rule), so reject it. */ rprintf(FERROR, "specified-side merge file contains specified-side filter: %s\n", *rulestr_ptr); exit_cleanup(RERR_SYNTAX); } rule->rflags |= template->rflags & FILTRULES_SIDES; } if (template->rflags & FILTRULE_WORD_SPLIT) { const uchar *cp = s; /* Token ends at whitespace or the end of the string. */ while (!isspace(*cp) && *cp != '\0') cp++; len = cp - s; } else len = strlen((char*)s); |
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