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1 <?php 2 /** 3 * Rewrite API: WP_Rewrite class 4 * 5 * @package WordPress 6 * @subpackage Rewrite 7 * @since 1.5.0 8 */ 9 10 /** 11 * Core class used to implement a rewrite component API. 12 * 13 * The WordPress Rewrite class writes the rewrite module rules to the .htaccess 14 * file. It also handles parsing the request to get the correct setup for the 15 * WordPress Query class. 16 * 17 * The Rewrite along with WP class function as a front controller for WordPress. 18 * You can add rules to trigger your page view and processing using this 19 * component. The full functionality of a front controller does not exist, 20 * meaning you can't define how the template files load based on the rewrite 21 * rules. 22 * 23 * @since 1.5.0 24 */ 25 #[AllowDynamicProperties] 26 class WP_Rewrite { 27 /** 28 * Permalink structure for posts. 29 * 30 * @since 1.5.0 31 * @var string 32 */ 33 public $permalink_structure; 34 35 /** 36 * Whether to add trailing slashes. 37 * 38 * @since 2.2.0 39 * @var bool 40 */ 41 public $use_trailing_slashes; 42 43 /** 44 * Base for the author permalink structure (example.com/$author_base/authorname). 45 * 46 * @since 1.5.0 47 * @var string 48 */ 49 public $author_base = 'author'; 50 51 /** 52 * Permalink structure for author archives. 53 * 54 * @since 1.5.0 55 * @var string 56 */ 57 public $author_structure; 58 59 /** 60 * Permalink structure for date archives. 61 * 62 * @since 1.5.0 63 * @var string 64 */ 65 public $date_structure; 66 67 /** 68 * Permalink structure for pages. 69 * 70 * @since 1.5.0 71 * @var string 72 */ 73 public $page_structure; 74 75 /** 76 * Base of the search permalink structure (example.com/$search_base/query). 77 * 78 * @since 1.5.0 79 * @var string 80 */ 81 public $search_base = 'search'; 82 83 /** 84 * Permalink structure for searches. 85 * 86 * @since 1.5.0 87 * @var string 88 */ 89 public $search_structure; 90 91 /** 92 * Comments permalink base. 93 * 94 * @since 1.5.0 95 * @var string 96 */ 97 public $comments_base = 'comments'; 98 99 /** 100 * Pagination permalink base. 101 * 102 * @since 3.1.0 103 * @var string 104 */ 105 public $pagination_base = 'page'; 106 107 /** 108 * Comments pagination permalink base. 109 * 110 * @since 4.2.0 111 * @var string 112 */ 113 public $comments_pagination_base = 'comment-page'; 114 115 /** 116 * Feed permalink base. 117 * 118 * @since 1.5.0 119 * @var string 120 */ 121 public $feed_base = 'feed'; 122 123 /** 124 * Comments feed permalink structure. 125 * 126 * @since 1.5.0 127 * @var string 128 */ 129 public $comment_feed_structure; 130 131 /** 132 * Feed request permalink structure. 133 * 134 * @since 1.5.0 135 * @var string 136 */ 137 public $feed_structure; 138 139 /** 140 * The static portion of the post permalink structure. 141 * 142 * If the permalink structure is "/archive/%post_id%" then the front 143 * is "/archive/". If the permalink structure is "/%year%/%postname%/" 144 * then the front is "/". 145 * 146 * @since 1.5.0 147 * @var string 148 * 149 * @see WP_Rewrite::init() 150 */ 151 public $front; 152 153 /** 154 * The prefix for all permalink structures. 155 * 156 * If PATHINFO/index permalinks are in use then the root is the value of 157 * `WP_Rewrite::$index` with a trailing slash appended. Otherwise the root 158 * will be empty. 159 * 160 * @since 1.5.0 161 * @var string 162 * 163 * @see WP_Rewrite::init() 164 * @see WP_Rewrite::using_index_permalinks() 165 */ 166 public $root = ''; 167 168 /** 169 * The name of the index file which is the entry point to all requests. 170 * 171 * @since 1.5.0 172 * @var string 173 */ 174 public $index = 'index.php'; 175 176 /** 177 * Variable name to use for regex matches in the rewritten query. 178 * 179 * @since 1.5.0 180 * @var string 181 */ 182 public $matches = ''; 183 184 /** 185 * Rewrite rules to match against the request to find the redirect or query. 186 * 187 * @since 1.5.0 188 * @var string[] 189 */ 190 public $rules; 191 192 /** 193 * Additional rules added external to the rewrite class. 194 * 195 * Those not generated by the class, see add_rewrite_rule(). 196 * 197 * @since 2.1.0 198 * @var string[] 199 */ 200 public $extra_rules = array(); 201 202 /** 203 * Additional rules that belong at the beginning to match first. 204 * 205 * Those not generated by the class, see add_rewrite_rule(). 206 * 207 * @since 2.3.0 208 * @var string[] 209 */ 210 public $extra_rules_top = array(); 211 212 /** 213 * Rules that don't redirect to WordPress' index.php. 214 * 215 * These rules are written to the mod_rewrite portion of the .htaccess, 216 * and are added by add_external_rule(). 217 * 218 * @since 2.1.0 219 * @var string[] 220 */ 221 public $non_wp_rules = array(); 222 223 /** 224 * Extra permalink structures, e.g. categories, added by add_permastruct(). 225 * 226 * @since 2.1.0 227 * @var array[] 228 */ 229 public $extra_permastructs = array(); 230 231 /** 232 * Endpoints (like /trackback/) added by add_rewrite_endpoint(). 233 * 234 * @since 2.1.0 235 * @var array[] 236 */ 237 public $endpoints; 238 239 /** 240 * Whether to write every mod_rewrite rule for WordPress into the .htaccess file. 241 * 242 * This is off by default, turning it on might print a lot of rewrite rules 243 * to the .htaccess file. 244 * 245 * @since 2.0.0 246 * @var bool 247 * 248 * @see WP_Rewrite::mod_rewrite_rules() 249 */ 250 public $use_verbose_rules = false; 251 252 /** 253 * Could post permalinks be confused with those of pages? 254 * 255 * If the first rewrite tag in the post permalink structure is one that could 256 * also match a page name (e.g. %postname% or %author%) then this flag is 257 * set to true. Prior to WordPress 3.3 this flag indicated that every page 258 * would have a set of rules added to the top of the rewrite rules array. 259 * Now it tells WP::parse_request() to check if a URL matching the page 260 * permastruct is actually a page before accepting it. 261 * 262 * @since 2.5.0 263 * @var bool 264 * 265 * @see WP_Rewrite::init() 266 */ 267 public $use_verbose_page_rules = true; 268 269 /** 270 * Rewrite tags that can be used in permalink structures. 271 * 272 * These are translated into the regular expressions stored in 273 * `WP_Rewrite::$rewritereplace` and are rewritten to the query 274 * variables listed in WP_Rewrite::$queryreplace. 275 * 276 * Additional tags can be added with add_rewrite_tag(). 277 * 278 * @since 1.5.0 279 * @var string[] 280 */ 281 public $rewritecode = array( 282 '%year%', 283 '%monthnum%', 284 '%day%', 285 '%hour%', 286 '%minute%', 287 '%second%', 288 '%postname%', 289 '%post_id%', 290 '%author%', 291 '%pagename%', 292 '%search%', 293 ); 294 295 /** 296 * Regular expressions to be substituted into rewrite rules in place 297 * of rewrite tags, see WP_Rewrite::$rewritecode. 298 * 299 * @since 1.5.0 300 * @var string[] 301 */ 302 public $rewritereplace = array( 303 '([0-9]{4})', 304 '([0-9]{1,2})', 305 '([0-9]{1,2})', 306 '([0-9]{1,2})', 307 '([0-9]{1,2})', 308 '([0-9]{1,2})', 309 '([^/]+)', 310 '([0-9]+)', 311 '([^/]+)', 312 '([^/]+?)', 313 '(.+)', 314 ); 315 316 /** 317 * Query variables that rewrite tags map to, see WP_Rewrite::$rewritecode. 318 * 319 * @since 1.5.0 320 * @var string[] 321 */ 322 public $queryreplace = array( 323 'year=', 324 'monthnum=', 325 'day=', 326 'hour=', 327 'minute=', 328 'second=', 329 'name=', 330 'p=', 331 'author_name=', 332 'pagename=', 333 's=', 334 ); 335 336 /** 337 * Supported default feeds. 338 * 339 * @since 1.5.0 340 * @var string[] 341 */ 342 public $feeds = array( 'feed', 'rdf', 'rss', 'rss2', 'atom' ); 343 344 /** 345 * Determines whether permalinks are being used. 346 * 347 * This can be either rewrite module or permalink in the HTTP query string. 348 * 349 * @since 1.5.0 350 * 351 * @return bool True, if permalinks are enabled. 352 */ 353 public function using_permalinks() { 354 return ! empty( $this->permalink_structure ); 355 } 356 357 /** 358 * Determines whether permalinks are being used and rewrite module is not enabled. 359 * 360 * Means that permalink links are enabled and index.php is in the URL. 361 * 362 * @since 1.5.0 363 * 364 * @return bool Whether permalink links are enabled and index.php is in the URL. 365 */ 366 public function using_index_permalinks() { 367 if ( empty( $this->permalink_structure ) ) { 368 return false; 369 } 370 371 // If the index is not in the permalink, we're using mod_rewrite. 372 return preg_match( '#^/*' . $this->index . '#', $this->permalink_structure ); 373 } 374 375 /** 376 * Determines whether permalinks are being used and rewrite module is enabled. 377 * 378 * Using permalinks and index.php is not in the URL. 379 * 380 * @since 1.5.0 381 * 382 * @return bool Whether permalink links are enabled and index.php is NOT in the URL. 383 */ 384 public function using_mod_rewrite_permalinks() { 385 return $this->using_permalinks() && ! $this->using_index_permalinks(); 386 } 387 388 /** 389 * Indexes for matches for usage in preg_*() functions. 390 * 391 * The format of the string is, with empty matches property value, '$NUM'. 392 * The 'NUM' will be replaced with the value in the $number parameter. With 393 * the matches property not empty, the value of the returned string will 394 * contain that value of the matches property. The format then will be 395 * '$MATCHES[NUM]', with MATCHES as the value in the property and NUM the 396 * value of the $number parameter. 397 * 398 * @since 1.5.0 399 * 400 * @param int $number Index number. 401 * @return string 402 */ 403 public function preg_index( $number ) { 404 $match_prefix = '$'; 405 $match_suffix = ''; 406 407 if ( ! empty( $this->matches ) ) { 408 $match_prefix = '$' . $this->matches . '['; 409 $match_suffix = ']'; 410 } 411 412 return "$match_prefix$number$match_suffix"; 413 } 414 415 /** 416 * Retrieves all pages and attachments for pages URIs. 417 * 418 * The attachments are for those that have pages as parents and will be 419 * retrieved. 420 * 421 * @since 2.5.0 422 * 423 * @global wpdb $wpdb WordPress database abstraction object. 424 * 425 * @return array Array of page URIs as first element and attachment URIs as second element. 426 */ 427 public function page_uri_index() { 428 global $wpdb; 429 430 // Get pages in order of hierarchy, i.e. children after parents. 431 $pages = $wpdb->get_results( "SELECT ID, post_name, post_parent FROM $wpdb->posts WHERE post_type = 'page' AND post_status != 'auto-draft'" ); 432 $posts = get_page_hierarchy( $pages ); 433 434 // If we have no pages get out quick. 435 if ( ! $posts ) { 436 return array( array(), array() ); 437 } 438 439 // Now reverse it, because we need parents after children for rewrite rules to work properly. 440 $posts = array_reverse( $posts, true ); 441 442 $page_uris = array(); 443 $page_attachment_uris = array(); 444 445 foreach ( $posts as $id => $post ) { 446 // URL => page name. 447 $uri = get_page_uri( $id ); 448 $attachments = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_name, post_parent FROM $wpdb->posts WHERE post_type = 'attachment' AND post_parent = %d", $id ) ); 449 if ( ! empty( $attachments ) ) { 450 foreach ( $attachments as $attachment ) { 451 $attach_uri = get_page_uri( $attachment->ID ); 452 $page_attachment_uris[ $attach_uri ] = $attachment->ID; 453 } 454 } 455 456 $page_uris[ $uri ] = $id; 457 } 458 459 return array( $page_uris, $page_attachment_uris ); 460 } 461 462 /** 463 * Retrieves all of the rewrite rules for pages. 464 * 465 * @since 1.5.0 466 * 467 * @return string[] Page rewrite rules. 468 */ 469 public function page_rewrite_rules() { 470 // The extra .? at the beginning prevents clashes with other regular expressions in the rules array. 471 $this->add_rewrite_tag( '%pagename%', '(.?.+?)', 'pagename=' ); 472 473 return $this->generate_rewrite_rules( $this->get_page_permastruct(), EP_PAGES, true, true, false, false ); 474 } 475 476 /** 477 * Retrieves date permalink structure, with year, month, and day. 478 * 479 * The permalink structure for the date, if not set already depends on the 480 * permalink structure. It can be one of three formats. The first is year, 481 * month, day; the second is day, month, year; and the last format is month, 482 * day, year. These are matched against the permalink structure for which 483 * one is used. If none matches, then the default will be used, which is 484 * year, month, day. 485 * 486 * Prevents post ID and date permalinks from overlapping. In the case of 487 * post_id, the date permalink will be prepended with front permalink with 488 * 'date/' before the actual permalink to form the complete date permalink 489 * structure. 490 * 491 * @since 1.5.0 492 * 493 * @return string|false Date permalink structure on success, false on failure. 494 */ 495 public function get_date_permastruct() { 496 if ( isset( $this->date_structure ) ) { 497 return $this->date_structure; 498 } 499 500 if ( empty( $this->permalink_structure ) ) { 501 $this->date_structure = ''; 502 return false; 503 } 504 505 // The date permalink must have year, month, and day separated by slashes. 506 $endians = array( '%year%/%monthnum%/%day%', '%day%/%monthnum%/%year%', '%monthnum%/%day%/%year%' ); 507 508 $this->date_structure = ''; 509 $date_endian = ''; 510 511 foreach ( $endians as $endian ) { 512 if ( str_contains( $this->permalink_structure, $endian ) ) { 513 $date_endian = $endian; 514 break; 515 } 516 } 517 518 if ( empty( $date_endian ) ) { 519 $date_endian = '%year%/%monthnum%/%day%'; 520 } 521 522 /* 523 * Do not allow the date tags and %post_id% to overlap in the permalink 524 * structure. If they do, move the date tags to $front/date/. 525 */ 526 $front = $this->front; 527 preg_match_all( '/%.+?%/', $this->permalink_structure, $tokens ); 528 $tok_index = 1; 529 foreach ( (array) $tokens[0] as $token ) { 530 if ( '%post_id%' === $token && ( $tok_index <= 3 ) ) { 531 $front = $front . 'date/'; 532 break; 533 } 534 ++$tok_index; 535 } 536 537 $this->date_structure = $front . $date_endian; 538 539 return $this->date_structure; 540 } 541 542 /** 543 * Retrieves the year permalink structure without month and day. 544 * 545 * Gets the date permalink structure and strips out the month and day 546 * permalink structures. 547 * 548 * @since 1.5.0 549 * 550 * @return string|false Year permalink structure on success, false on failure. 551 */ 552 public function get_year_permastruct() { 553 $structure = $this->get_date_permastruct(); 554 555 if ( empty( $structure ) ) { 556 return false; 557 } 558 559 $structure = str_replace( '%monthnum%', '', $structure ); 560 $structure = str_replace( '%day%', '', $structure ); 561 $structure = preg_replace( '#/+#', '/', $structure ); 562 563 return $structure; 564 } 565 566 /** 567 * Retrieves the month permalink structure without day and with year. 568 * 569 * Gets the date permalink structure and strips out the day permalink 570 * structures. Keeps the year permalink structure. 571 * 572 * @since 1.5.0 573 * 574 * @return string|false Year/Month permalink structure on success, false on failure. 575 */ 576 public function get_month_permastruct() { 577 $structure = $this->get_date_permastruct(); 578 579 if ( empty( $structure ) ) { 580 return false; 581 } 582 583 $structure = str_replace( '%day%', '', $structure ); 584 $structure = preg_replace( '#/+#', '/', $structure ); 585 586 return $structure; 587 } 588 589 /** 590 * Retrieves the day permalink structure with month and year. 591 * 592 * Keeps date permalink structure with all year, month, and day. 593 * 594 * @since 1.5.0 595 * 596 * @return string|false Year/Month/Day permalink structure on success, false on failure. 597 */ 598 public function get_day_permastruct() { 599 return $this->get_date_permastruct(); 600 } 601 602 /** 603 * Retrieves the permalink structure for categories. 604 * 605 * If the category_base property has no value, then the category structure 606 * will have the front property value, followed by 'category', and finally 607 * '%category%'. If it does, then the root property will be used, along with 608 * the category_base property value. 609 * 610 * @since 1.5.0 611 * 612 * @return string|false Category permalink structure on success, false on failure. 613 */ 614 public function get_category_permastruct() { 615 return $this->get_extra_permastruct( 'category' ); 616 } 617 618 /** 619 * Retrieves the permalink structure for tags. 620 * 621 * If the tag_base property has no value, then the tag structure will have 622 * the front property value, followed by 'tag', and finally '%tag%'. If it 623 * does, then the root property will be used, along with the tag_base 624 * property value. 625 * 626 * @since 2.3.0 627 * 628 * @return string|false Tag permalink structure on success, false on failure. 629 */ 630 public function get_tag_permastruct() { 631 return $this->get_extra_permastruct( 'post_tag' ); 632 } 633 634 /** 635 * Retrieves an extra permalink structure by name. 636 * 637 * @since 2.5.0 638 * 639 * @param string $name Permalink structure name. 640 * @return string|false Permalink structure string on success, false on failure. 641 */ 642 public function get_extra_permastruct( $name ) { 643 if ( empty( $this->permalink_structure ) ) { 644 return false; 645 } 646 647 if ( isset( $this->extra_permastructs[ $name ] ) ) { 648 return $this->extra_permastructs[ $name ]['struct']; 649 } 650 651 return false; 652 } 653 654 /** 655 * Retrieves the author permalink structure. 656 * 657 * The permalink structure is front property, author base, and finally 658 * '/%author%'. Will set the author_structure property and then return it 659 * without attempting to set the value again. 660 * 661 * @since 1.5.0 662 * 663 * @return string|false Author permalink structure on success, false on failure. 664 */ 665 public function get_author_permastruct() { 666 if ( isset( $this->author_structure ) ) { 667 return $this->author_structure; 668 } 669 670 if ( empty( $this->permalink_structure ) ) { 671 $this->author_structure = ''; 672 return false; 673 } 674 675 $this->author_structure = $this->front . $this->author_base . '/%author%'; 676 677 return $this->author_structure; 678 } 679 680 /** 681 * Retrieves the search permalink structure. 682 * 683 * The permalink structure is root property, search base, and finally 684 * '/%search%'. Will set the search_structure property and then return it 685 * without attempting to set the value again. 686 * 687 * @since 1.5.0 688 * 689 * @return string|false Search permalink structure on success, false on failure. 690 */ 691 public function get_search_permastruct() { 692 if ( isset( $this->search_structure ) ) { 693 return $this->search_structure; 694 } 695 696 if ( empty( $this->permalink_structure ) ) { 697 $this->search_structure = ''; 698 return false; 699 } 700 701 $this->search_structure = $this->root . $this->search_base . '/%search%'; 702 703 return $this->search_structure; 704 } 705 706 /** 707 * Retrieves the page permalink structure. 708 * 709 * The permalink structure is root property, and '%pagename%'. Will set the 710 * page_structure property and then return it without attempting to set the 711 * value again. 712 * 713 * @since 1.5.0 714 * 715 * @return string|false Page permalink structure on success, false on failure. 716 */ 717 public function get_page_permastruct() { 718 if ( isset( $this->page_structure ) ) { 719 return $this->page_structure; 720 } 721 722 if ( empty( $this->permalink_structure ) ) { 723 $this->page_structure = ''; 724 return false; 725 } 726 727 $this->page_structure = $this->root . '%pagename%'; 728 729 return $this->page_structure; 730 } 731 732 /** 733 * Retrieves the feed permalink structure. 734 * 735 * The permalink structure is root property, feed base, and finally 736 * '/%feed%'. Will set the feed_structure property and then return it 737 * without attempting to set the value again. 738 * 739 * @since 1.5.0 740 * 741 * @return string|false Feed permalink structure on success, false on failure. 742 */ 743 public function get_feed_permastruct() { 744 if ( isset( $this->feed_structure ) ) { 745 return $this->feed_structure; 746 } 747 748 if ( empty( $this->permalink_structure ) ) { 749 $this->feed_structure = ''; 750 return false; 751 } 752 753 $this->feed_structure = $this->root . $this->feed_base . '/%feed%'; 754 755 return $this->feed_structure; 756 } 757 758 /** 759 * Retrieves the comment feed permalink structure. 760 * 761 * The permalink structure is root property, comment base property, feed 762 * base and finally '/%feed%'. Will set the comment_feed_structure property 763 * and then return it without attempting to set the value again. 764 * 765 * @since 1.5.0 766 * 767 * @return string|false Comment feed permalink structure on success, false on failure. 768 */ 769 public function get_comment_feed_permastruct() { 770 if ( isset( $this->comment_feed_structure ) ) { 771 return $this->comment_feed_structure; 772 } 773 774 if ( empty( $this->permalink_structure ) ) { 775 $this->comment_feed_structure = ''; 776 return false; 777 } 778 779 $this->comment_feed_structure = $this->root . $this->comments_base . '/' . $this->feed_base . '/%feed%'; 780 781 return $this->comment_feed_structure; 782 } 783 784 /** 785 * Adds or updates existing rewrite tags (e.g. %postname%). 786 * 787 * If the tag already exists, replace the existing pattern and query for 788 * that tag, otherwise add the new tag. 789 * 790 * @since 1.5.0 791 * 792 * @see WP_Rewrite::$rewritecode 793 * @see WP_Rewrite::$rewritereplace 794 * @see WP_Rewrite::$queryreplace 795 * 796 * @param string $tag Name of the rewrite tag to add or update. 797 * @param string $regex Regular expression to substitute the tag for in rewrite rules. 798 * @param string $query String to append to the rewritten query. Must end in '='. 799 */ 800 public function add_rewrite_tag( $tag, $regex, $query ) { 801 $position = array_search( $tag, $this->rewritecode, true ); 802 if ( false !== $position && null !== $position ) { 803 $this->rewritereplace[ $position ] = $regex; 804 $this->queryreplace[ $position ] = $query; 805 } else { 806 $this->rewritecode[] = $tag; 807 $this->rewritereplace[] = $regex; 808 $this->queryreplace[] = $query; 809 } 810 } 811 812 813 /** 814 * Removes an existing rewrite tag. 815 * 816 * @since 4.5.0 817 * 818 * @see WP_Rewrite::$rewritecode 819 * @see WP_Rewrite::$rewritereplace 820 * @see WP_Rewrite::$queryreplace 821 * 822 * @param string $tag Name of the rewrite tag to remove. 823 */ 824 public function remove_rewrite_tag( $tag ) { 825 $position = array_search( $tag, $this->rewritecode, true ); 826 if ( false !== $position && null !== $position ) { 827 unset( $this->rewritecode[ $position ] ); 828 unset( $this->rewritereplace[ $position ] ); 829 unset( $this->queryreplace[ $position ] ); 830 } 831 } 832 833 /** 834 * Generates rewrite rules from a permalink structure. 835 * 836 * The main WP_Rewrite function for building the rewrite rule list. The 837 * contents of the function is a mix of black magic and regular expressions, 838 * so best just ignore the contents and move to the parameters. 839 * 840 * @since 1.5.0 841 * 842 * @param string $permalink_structure The permalink structure. 843 * @param int $ep_mask Optional. Endpoint mask defining what endpoints are added to the structure. 844 * Accepts a mask of: 845 * - `EP_ALL` 846 * - `EP_NONE` 847 * - `EP_ALL_ARCHIVES` 848 * - `EP_ATTACHMENT` 849 * - `EP_AUTHORS` 850 * - `EP_CATEGORIES` 851 * - `EP_COMMENTS` 852 * - `EP_DATE` 853 * - `EP_DAY` 854 * - `EP_MONTH` 855 * - `EP_PAGES` 856 * - `EP_PERMALINK` 857 * - `EP_ROOT` 858 * - `EP_SEARCH` 859 * - `EP_TAGS` 860 * - `EP_YEAR` 861 * Default `EP_NONE`. 862 * @param bool $paged Optional. Whether archive pagination rules should be added for the structure. 863 * Default true. 864 * @param bool $feed Optional. Whether feed rewrite rules should be added for the structure. 865 * Default true. 866 * @param bool $forcomments Optional. Whether the feed rules should be a query for a comments feed. 867 * Default false. 868 * @param bool $walk_dirs Optional. Whether the 'directories' making up the structure should be walked 869 * over and rewrite rules built for each in-turn. Default true. 870 * @param bool $endpoints Optional. Whether endpoints should be applied to the generated rewrite rules. 871 * Default true. 872 * @return string[] Array of rewrite rules keyed by their regex pattern. 873 */ 874 public function generate_rewrite_rules( $permalink_structure, $ep_mask = EP_NONE, $paged = true, $feed = true, $forcomments = false, $walk_dirs = true, $endpoints = true ) { 875 // Build a regex to match the feed section of URLs, something like (feed|atom|rss|rss2)/? 876 $feedregex2 = ''; 877 foreach ( (array) $this->feeds as $feed_name ) { 878 $feedregex2 .= $feed_name . '|'; 879 } 880 $feedregex2 = '(' . trim( $feedregex2, '|' ) . ')/?$'; 881 882 /* 883 * $feedregex is identical but with /feed/ added on as well, so URLs like <permalink>/feed/atom 884 * and <permalink>/atom are both possible 885 */ 886 $feedregex = $this->feed_base . '/' . $feedregex2; 887 888 // Build a regex to match the trackback and page/xx parts of URLs. 889 $trackbackregex = 'trackback/?$'; 890 $pageregex = $this->pagination_base . '/?([0-9]{1,})/?$'; 891 $commentregex = $this->comments_pagination_base . '-([0-9]{1,})/?$'; 892 $embedregex = 'embed/?$'; 893 894 // Build up an array of endpoint regexes to append => queries to append. 895 if ( $endpoints ) { 896 $ep_query_append = array(); 897 foreach ( (array) $this->endpoints as $endpoint ) { 898 // Match everything after the endpoint name, but allow for nothing to appear there. 899 $epmatch = $endpoint[1] . '(/(.*))?/?$'; 900 901 // This will be appended on to the rest of the query for each dir. 902 $epquery = '&' . $endpoint[2] . '='; 903 $ep_query_append[ $epmatch ] = array( $endpoint[0], $epquery ); 904 } 905 } 906 907 // Get everything up to the first rewrite tag. 908 $front = substr( $permalink_structure, 0, strpos( $permalink_structure, '%' ) ); 909 910 // Build an array of the tags (note that said array ends up being in $tokens[0]). 911 preg_match_all( '/%.+?%/', $permalink_structure, $tokens ); 912 913 $num_tokens = count( $tokens[0] ); 914 915 $index = $this->index; // Probably 'index.php'. 916 $feedindex = $index; 917 $trackbackindex = $index; 918 $embedindex = $index; 919 920 /* 921 * Build a list from the rewritecode and queryreplace arrays, that will look something 922 * like tagname=$matches[i] where i is the current $i. 923 */ 924 $queries = array(); 925 for ( $i = 0; $i < $num_tokens; ++$i ) { 926 if ( 0 < $i ) { 927 $queries[ $i ] = $queries[ $i - 1 ] . '&'; 928 } else { 929 $queries[ $i ] = ''; 930 } 931 932 $query_token = str_replace( $this->rewritecode, $this->queryreplace, $tokens[0][ $i ] ) . $this->preg_index( $i + 1 ); 933 $queries[ $i ] .= $query_token; 934 } 935 936 // Get the structure, minus any cruft (stuff that isn't tags) at the front. 937 $structure = $permalink_structure; 938 if ( '/' !== $front ) { 939 $structure = str_replace( $front, '', $structure ); 940 } 941 942 /* 943 * Create a list of dirs to walk over, making rewrite rules for each level 944 * so for example, a $structure of /%year%/%monthnum%/%postname% would create 945 * rewrite rules for /%year%/, /%year%/%monthnum%/ and /%year%/%monthnum%/%postname% 946 */ 947 $structure = trim( $structure, '/' ); 948 $dirs = $walk_dirs ? explode( '/', $structure ) : array( $structure ); 949 $num_dirs = count( $dirs ); 950 951 // Strip slashes from the front of $front. 952 $front = preg_replace( '|^/+|', '', $front ); 953 954 // The main workhorse loop. 955 $post_rewrite = array(); 956 $struct = $front; 957 for ( $j = 0; $j < $num_dirs; ++$j ) { 958 // Get the struct for this dir, and trim slashes off the front. 959 $struct .= $dirs[ $j ] . '/'; // Accumulate. see comment near explode('/', $structure) above. 960 $struct = ltrim( $struct, '/' ); 961 962 // Replace tags with regexes. 963 $match = str_replace( $this->rewritecode, $this->rewritereplace, $struct ); 964 965 // Make a list of tags, and store how many there are in $num_toks. 966 $num_toks = preg_match_all( '/%.+?%/', $struct, $toks ); 967 968 // Get the 'tagname=$matches[i]'. 969 $query = ( ! empty( $num_toks ) && isset( $queries[ $num_toks - 1 ] ) ) ? $queries[ $num_toks - 1 ] : ''; 970 971 // Set up $ep_mask_specific which is used to match more specific URL types. 972 switch ( $dirs[ $j ] ) { 973 case '%year%': 974 $ep_mask_specific = EP_YEAR; 975 break; 976 case '%monthnum%': 977 $ep_mask_specific = EP_MONTH; 978 break; 979 case '%day%': 980 $ep_mask_specific = EP_DAY; 981 break; 982 default: 983 $ep_mask_specific = EP_NONE; 984 } 985 986 // Create query for /page/xx. 987 $pagematch = $match . $pageregex; 988 $pagequery = $index . '?' . $query . '&paged=' . $this->preg_index( $num_toks + 1 ); 989 990 // Create query for /comment-page-xx. 991 $commentmatch = $match . $commentregex; 992 $commentquery = $index . '?' . $query . '&cpage=' . $this->preg_index( $num_toks + 1 ); 993 994 if ( get_option( 'page_on_front' ) ) { 995 // Create query for Root /comment-page-xx. 996 $rootcommentmatch = $match . $commentregex; 997 $rootcommentquery = $index . '?' . $query . '&page_id=' . get_option( 'page_on_front' ) . '&cpage=' . $this->preg_index( $num_toks + 1 ); 998 } 999 1000 // Create query for /feed/(feed|atom|rss|rss2|rdf). 1001 $feedmatch = $match . $feedregex; 1002 $feedquery = $feedindex . '?' . $query . '&feed=' . $this->preg_index( $num_toks + 1 ); 1003 1004 // Create query for /(feed|atom|rss|rss2|rdf) (see comment near creation of $feedregex). 1005 $feedmatch2 = $match . $feedregex2; 1006 $feedquery2 = $feedindex . '?' . $query . '&feed=' . $this->preg_index( $num_toks + 1 ); 1007 1008 // Create query and regex for embeds. 1009 $embedmatch = $match . $embedregex; 1010 $embedquery = $embedindex . '?' . $query . '&embed=true'; 1011 1012 // If asked to, turn the feed queries into comment feed ones. 1013 if ( $forcomments ) { 1014 $feedquery .= '&withcomments=1'; 1015 $feedquery2 .= '&withcomments=1'; 1016 } 1017 1018 // Start creating the array of rewrites for this dir. 1019 $rewrite = array(); 1020 1021 // ...adding on /feed/ regexes => queries. 1022 if ( $feed ) { 1023 $rewrite = array( 1024 $feedmatch => $feedquery, 1025 $feedmatch2 => $feedquery2, 1026 $embedmatch => $embedquery, 1027 ); 1028 } 1029 1030 // ...and /page/xx ones. 1031 if ( $paged ) { 1032 $rewrite = array_merge( $rewrite, array( $pagematch => $pagequery ) ); 1033 } 1034 1035 // Only on pages with comments add ../comment-page-xx/. 1036 if ( EP_PAGES & $ep_mask || EP_PERMALINK & $ep_mask ) { 1037 $rewrite = array_merge( $rewrite, array( $commentmatch => $commentquery ) ); 1038 } elseif ( EP_ROOT & $ep_mask && get_option( 'page_on_front' ) ) { 1039 $rewrite = array_merge( $rewrite, array( $rootcommentmatch => $rootcommentquery ) ); 1040 } 1041 1042 // Do endpoints. 1043 if ( $endpoints ) { 1044 foreach ( (array) $ep_query_append as $regex => $ep ) { 1045 // Add the endpoints on if the mask fits. 1046 if ( $ep[0] & $ep_mask || $ep[0] & $ep_mask_specific ) { 1047 $rewrite[ $match . $regex ] = $index . '?' . $query . $ep[1] . $this->preg_index( $num_toks + 2 ); 1048 } 1049 } 1050 } 1051 1052 // If we've got some tags in this dir. 1053 if ( $num_toks ) { 1054 $post = false; 1055 $page = false; 1056 1057 /* 1058 * Check to see if this dir is permalink-level: i.e. the structure specifies an 1059 * individual post. Do this by checking it contains at least one of 1) post name, 1060 * 2) post ID, 3) page name, 4) timestamp (year, month, day, hour, second and 1061 * minute all present). Set these flags now as we need them for the endpoints. 1062 */ 1063 if ( str_contains( $struct, '%postname%' ) 1064 || str_contains( $struct, '%post_id%' ) 1065 || str_contains( $struct, '%pagename%' ) 1066 || ( str_contains( $struct, '%year%' ) 1067 && str_contains( $struct, '%monthnum%' ) 1068 && str_contains( $struct, '%day%' ) 1069 && str_contains( $struct, '%hour%' ) 1070 && str_contains( $struct, '%minute%' ) 1071 && str_contains( $struct, '%second%' ) ) 1072 ) { 1073 $post = true; 1074 if ( str_contains( $struct, '%pagename%' ) ) { 1075 $page = true; 1076 } 1077 } 1078 1079 if ( ! $post ) { 1080 // For custom post types, we need to add on endpoints as well. 1081 foreach ( get_post_types( array( '_builtin' => false ) ) as $ptype ) { 1082 if ( str_contains( $struct, "%$ptype%" ) ) { 1083 $post = true; 1084 1085 // This is for page style attachment URLs. 1086 $page = is_post_type_hierarchical( $ptype ); 1087 break; 1088 } 1089 } 1090 } 1091 1092 // If creating rules for a permalink, do all the endpoints like attachments etc. 1093 if ( $post ) { 1094 // Create query and regex for trackback. 1095 $trackbackmatch = $match . $trackbackregex; 1096 $trackbackquery = $trackbackindex . '?' . $query . '&tb=1'; 1097 1098 // Create query and regex for embeds. 1099 $embedmatch = $match . $embedregex; 1100 $embedquery = $embedindex . '?' . $query . '&embed=true'; 1101 1102 // Trim slashes from the end of the regex for this dir. 1103 $match = rtrim( $match, '/' ); 1104 1105 // Get rid of brackets. 1106 $submatchbase = str_replace( array( '(', ')' ), '', $match ); 1107 1108 // Add a rule for at attachments, which take the form of <permalink>/some-text. 1109 $sub1 = $submatchbase . '/([^/]+)/'; 1110 1111 // Add trackback regex <permalink>/trackback/... 1112 $sub1tb = $sub1 . $trackbackregex; 1113 1114 // And <permalink>/feed/(atom|...) 1115 $sub1feed = $sub1 . $feedregex; 1116 1117 // And <permalink>/(feed|atom...) 1118 $sub1feed2 = $sub1 . $feedregex2; 1119 1120 // And <permalink>/comment-page-xx 1121 $sub1comment = $sub1 . $commentregex; 1122 1123 // And <permalink>/embed/... 1124 $sub1embed = $sub1 . $embedregex; 1125 1126 /* 1127 * Add another rule to match attachments in the explicit form: 1128 * <permalink>/attachment/some-text 1129 */ 1130 $sub2 = $submatchbase . '/attachment/([^/]+)/'; 1131 1132 // And add trackbacks <permalink>/attachment/trackback. 1133 $sub2tb = $sub2 . $trackbackregex; 1134 1135 // Feeds, <permalink>/attachment/feed/(atom|...) 1136 $sub2feed = $sub2 . $feedregex; 1137 1138 // And feeds again on to this <permalink>/attachment/(feed|atom...) 1139 $sub2feed2 = $sub2 . $feedregex2; 1140 1141 // And <permalink>/comment-page-xx 1142 $sub2comment = $sub2 . $commentregex; 1143 1144 // And <permalink>/embed/... 1145 $sub2embed = $sub2 . $embedregex; 1146 1147 // Create queries for these extra tag-ons we've just dealt with. 1148 $subquery = $index . '?attachment=' . $this->preg_index( 1 ); 1149 $subtbquery = $subquery . '&tb=1'; 1150 $subfeedquery = $subquery . '&feed=' . $this->preg_index( 2 ); 1151 $subcommentquery = $subquery . '&cpage=' . $this->preg_index( 2 ); 1152 $subembedquery = $subquery . '&embed=true'; 1153 1154 // Do endpoints for attachments. 1155 if ( ! empty( $endpoints ) ) { 1156 foreach ( (array) $ep_query_append as $regex => $ep ) { 1157 if ( $ep[0] & EP_ATTACHMENT ) { 1158 $rewrite[ $sub1 . $regex ] = $subquery . $ep[1] . $this->preg_index( 3 ); 1159 $rewrite[ $sub2 . $regex ] = $subquery . $ep[1] . $this->preg_index( 3 ); 1160 } 1161 } 1162 } 1163 1164 /* 1165 * Now we've finished with endpoints, finish off the $sub1 and $sub2 matches 1166 * add a ? as we don't have to match that last slash, and finally a $ so we 1167 * match to the end of the URL 1168 */ 1169 $sub1 .= '?$'; 1170 $sub2 .= '?$'; 1171 1172 /* 1173 * Post pagination, e.g. <permalink>/2/ 1174 * Previously: '(/[0-9]+)?/?$', which produced '/2' for page. 1175 * When cast to int, returned 0. 1176 */ 1177 $match = $match . '(?:/([0-9]+))?/?$'; 1178 $query = $index . '?' . $query . '&page=' . $this->preg_index( $num_toks + 1 ); 1179 1180 // Not matching a permalink so this is a lot simpler. 1181 } else { 1182 // Close the match and finalize the query. 1183 $match .= '?$'; 1184 $query = $index . '?' . $query; 1185 } 1186 1187 /* 1188 * Create the final array for this dir by joining the $rewrite array (which currently 1189 * only contains rules/queries for trackback, pages etc) to the main regex/query for 1190 * this dir 1191 */ 1192 $rewrite = array_merge( $rewrite, array( $match => $query ) ); 1193 1194 // If we're matching a permalink, add those extras (attachments etc) on. 1195 if ( $post ) { 1196 // Add trackback. 1197 $rewrite = array_merge( array( $trackbackmatch => $trackbackquery ), $rewrite ); 1198 1199 // Add embed. 1200 $rewrite = array_merge( array( $embedmatch => $embedquery ), $rewrite ); 1201 1202 // Add regexes/queries for attachments, attachment trackbacks and so on. 1203 if ( ! $page ) { 1204 // Require <permalink>/attachment/stuff form for pages because of confusion with subpages. 1205 $rewrite = array_merge( 1206 $rewrite, 1207 array( 1208 $sub1 => $subquery, 1209 $sub1tb => $subtbquery, 1210 $sub1feed => $subfeedquery, 1211 $sub1feed2 => $subfeedquery, 1212 $sub1comment => $subcommentquery, 1213 $sub1embed => $subembedquery, 1214 ) 1215 ); 1216 } 1217 1218 $rewrite = array_merge( 1219 array( 1220 $sub2 => $subquery, 1221 $sub2tb => $subtbquery, 1222 $sub2feed => $subfeedquery, 1223 $sub2feed2 => $subfeedquery, 1224 $sub2comment => $subcommentquery, 1225 $sub2embed => $subembedquery, 1226 ), 1227 $rewrite 1228 ); 1229 } 1230 } 1231 // Add the rules for this dir to the accumulating $post_rewrite. 1232 $post_rewrite = array_merge( $rewrite, $post_rewrite ); 1233 } 1234 1235 // The finished rules. phew! 1236 return $post_rewrite; 1237 } 1238 1239 /** 1240 * Generates rewrite rules with permalink structure and walking directory only. 1241 * 1242 * Shorten version of WP_Rewrite::generate_rewrite_rules() that allows for shorter 1243 * list of parameters. See the method for longer description of what generating 1244 * rewrite rules does. 1245 * 1246 * @since 1.5.0 1247 * 1248 * @see WP_Rewrite::generate_rewrite_rules() See for long description and rest of parameters. 1249 * 1250 * @param string $permalink_structure The permalink structure to generate rules. 1251 * @param bool $walk_dirs Optional. Whether to create list of directories to walk over. 1252 * Default false. 1253 * @return array An array of rewrite rules keyed by their regex pattern. 1254 */ 1255 public function generate_rewrite_rule( $permalink_structure, $walk_dirs = false ) { 1256 return $this->generate_rewrite_rules( $permalink_structure, EP_NONE, false, false, false, $walk_dirs ); 1257 } 1258 1259 /** 1260 * Constructs rewrite matches and queries from permalink structure. 1261 * 1262 * Runs the action {@see 'generate_rewrite_rules'} with the parameter that is an 1263 * reference to the current WP_Rewrite instance to further manipulate the 1264 * permalink structures and rewrite rules. Runs the {@see 'rewrite_rules_array'} 1265 * filter on the full rewrite rule array. 1266 * 1267 * There are two ways to manipulate the rewrite rules, one by hooking into 1268 * the {@see 'generate_rewrite_rules'} action and gaining full control of the 1269 * object or just manipulating the rewrite rule array before it is passed 1270 * from the function. 1271 * 1272 * @since 1.5.0 1273 * 1274 * @return string[] An associative array of matches and queries. 1275 */ 1276 public function rewrite_rules() { 1277 $rewrite = array(); 1278 1279 if ( empty( $this->permalink_structure ) ) { 1280 return $rewrite; 1281 } 1282 1283 // robots.txt -- only if installed at the root. 1284 $home_path = parse_url( home_url() ); 1285 $robots_rewrite = ( empty( $home_path['path'] ) || '/' === $home_path['path'] ) ? array( 'robots\.txt$' => $this->index . '?robots=1' ) : array(); 1286 1287 // favicon.ico -- only if installed at the root. 1288 $favicon_rewrite = ( empty( $home_path['path'] ) || '/' === $home_path['path'] ) ? array( 'favicon\.ico$' => $this->index . '?favicon=1' ) : array(); 1289 1290 // sitemap.xml -- only if installed at the root. 1291 $sitemap_rewrite = ( empty( $home_path['path'] ) || '/' === $home_path['path'] ) ? array( 'sitemap\.xml' => $this->index . '??sitemap=index' ) : array(); 1292 1293 // Old feed and service files. 1294 $deprecated_files = array( 1295 '.*wp-(atom|rdf|rss|rss2|feed|commentsrss2)\.php$' => $this->index . '?feed=old', 1296 '.*wp-app\.php(/.*)?$' => $this->index . '?error=403', 1297 ); 1298 1299 // Registration rules. 1300 $registration_pages = array(); 1301 if ( is_multisite() && is_main_site() ) { 1302 $registration_pages['.*wp-signup.php$'] = $this->index . '?signup=true'; 1303 $registration_pages['.*wp-activate.php$'] = $this->index . '?activate=true'; 1304 } 1305 1306 // Deprecated. 1307 $registration_pages['.*wp-register.php$'] = $this->index . '?register=true'; 1308 1309 // Post rewrite rules. 1310 $post_rewrite = $this->generate_rewrite_rules( $this->permalink_structure, EP_PERMALINK ); 1311 1312 /** 1313 * Filters rewrite rules used for "post" archives. 1314 * 1315 * @since 1.5.0 1316 * 1317 * @param string[] $post_rewrite Array of rewrite rules for posts, keyed by their regex pattern. 1318 */ 1319 $post_rewrite = apply_filters( 'post_rewrite_rules', $post_rewrite ); 1320 1321 // Date rewrite rules. 1322 $date_rewrite = $this->generate_rewrite_rules( $this->get_date_permastruct(), EP_DATE ); 1323 1324 /** 1325 * Filters rewrite rules used for date archives. 1326 * 1327 * Likely date archives would include `/yyyy/`, `/yyyy/mm/`, and `/yyyy/mm/dd/`. 1328 * 1329 * @since 1.5.0 1330 * 1331 * @param string[] $date_rewrite Array of rewrite rules for date archives, keyed by their regex pattern. 1332 */ 1333 $date_rewrite = apply_filters( 'date_rewrite_rules', $date_rewrite ); 1334 1335 // Root-level rewrite rules. 1336 $root_rewrite = $this->generate_rewrite_rules( $this->root . '/', EP_ROOT ); 1337 1338 /** 1339 * Filters rewrite rules used for root-level archives. 1340 * 1341 * Likely root-level archives would include pagination rules for the homepage 1342 * as well as site-wide post feeds (e.g. `/feed/`, and `/feed/atom/`). 1343 * 1344 * @since 1.5.0 1345 * 1346 * @param string[] $root_rewrite Array of root-level rewrite rules, keyed by their regex pattern. 1347 */ 1348 $root_rewrite = apply_filters( 'root_rewrite_rules', $root_rewrite ); 1349 1350 // Comments rewrite rules. 1351 $comments_rewrite = $this->generate_rewrite_rules( $this->root . $this->comments_base, EP_COMMENTS, false, true, true, false ); 1352 1353 /** 1354 * Filters rewrite rules used for comment feed archives. 1355 * 1356 * Likely comments feed archives include `/comments/feed/` and `/comments/feed/atom/`. 1357 * 1358 * @since 1.5.0 1359 * 1360 * @param string[] $comments_rewrite Array of rewrite rules for the site-wide comments feeds, keyed by their regex pattern. 1361 */ 1362 $comments_rewrite = apply_filters( 'comments_rewrite_rules', $comments_rewrite ); 1363 1364 // Search rewrite rules. 1365 $search_structure = $this->get_search_permastruct(); 1366 $search_rewrite = $this->generate_rewrite_rules( $search_structure, EP_SEARCH ); 1367 1368 /** 1369 * Filters rewrite rules used for search archives. 1370 * 1371 * Likely search-related archives include `/search/search+query/` as well as 1372 * pagination and feed paths for a search. 1373 * 1374 * @since 1.5.0 1375 * 1376 * @param string[] $search_rewrite Array of rewrite rules for search queries, keyed by their regex pattern. 1377 */ 1378 $search_rewrite = apply_filters( 'search_rewrite_rules', $search_rewrite ); 1379 1380 // Author rewrite rules. 1381 $author_rewrite = $this->generate_rewrite_rules( $this->get_author_permastruct(), EP_AUTHORS ); 1382 1383 /** 1384 * Filters rewrite rules used for author archives. 1385 * 1386 * Likely author archives would include `/author/author-name/`, as well as 1387 * pagination and feed paths for author archives. 1388 * 1389 * @since 1.5.0 1390 * 1391 * @param string[] $author_rewrite Array of rewrite rules for author archives, keyed by their regex pattern. 1392 */ 1393 $author_rewrite = apply_filters( 'author_rewrite_rules', $author_rewrite ); 1394 1395 // Pages rewrite rules. 1396 $page_rewrite = $this->page_rewrite_rules(); 1397 1398 /** 1399 * Filters rewrite rules used for "page" post type archives. 1400 * 1401 * @since 1.5.0 1402 * 1403 * @param string[] $page_rewrite Array of rewrite rules for the "page" post type, keyed by their regex pattern. 1404 */ 1405 $page_rewrite = apply_filters( 'page_rewrite_rules', $page_rewrite ); 1406 1407 // Extra permastructs. 1408 foreach ( $this->extra_permastructs as $permastructname => $struct ) { 1409 if ( is_array( $struct ) ) { 1410 if ( count( $struct ) === 2 ) { 1411 $rules = $this->generate_rewrite_rules( $struct[0], $struct[1] ); 1412 } else { 1413 $rules = $this->generate_rewrite_rules( $struct['struct'], $struct['ep_mask'], $struct['paged'], $struct['feed'], $struct['forcomments'], $struct['walk_dirs'], $struct['endpoints'] ); 1414 } 1415 } else { 1416 $rules = $this->generate_rewrite_rules( $struct ); 1417 } 1418 1419 /** 1420 * Filters rewrite rules used for individual permastructs. 1421 * 1422 * The dynamic portion of the hook name, `$permastructname`, refers 1423 * to the name of the registered permastruct. 1424 * 1425 * Possible hook names include: 1426 * 1427 * - `category_rewrite_rules` 1428 * - `post_format_rewrite_rules` 1429 * - `post_tag_rewrite_rules` 1430 * 1431 * @since 3.1.0 1432 * 1433 * @param string[] $rules Array of rewrite rules generated for the current permastruct, keyed by their regex pattern. 1434 */ 1435 $rules = apply_filters( "{$permastructname}_rewrite_rules", $rules ); 1436 1437 if ( 'post_tag' === $permastructname ) { 1438 1439 /** 1440 * Filters rewrite rules used specifically for Tags. 1441 * 1442 * @since 2.3.0 1443 * @deprecated 3.1.0 Use {@see 'post_tag_rewrite_rules'} instead. 1444 * 1445 * @param string[] $rules Array of rewrite rules generated for tags, keyed by their regex pattern. 1446 */ 1447 $rules = apply_filters_deprecated( 'tag_rewrite_rules', array( $rules ), '3.1.0', 'post_tag_rewrite_rules' ); 1448 } 1449 1450 $this->extra_rules_top = array_merge( $this->extra_rules_top, $rules ); 1451 } 1452 1453 // Put them together. 1454 if ( $this->use_verbose_page_rules ) { 1455 $this->rules = array_merge( $this->extra_rules_top, $robots_rewrite, $favicon_rewrite, $sitemap_rewrite, $deprecated_files, $registration_pages, $root_rewrite, $comments_rewrite, $search_rewrite, $author_rewrite, $date_rewrite, $page_rewrite, $post_rewrite, $this->extra_rules ); 1456 } else { 1457 $this->rules = array_merge( $this->extra_rules_top, $robots_rewrite, $favicon_rewrite, $sitemap_rewrite, $deprecated_files, $registration_pages, $root_rewrite, $comments_rewrite, $search_rewrite, $author_rewrite, $date_rewrite, $post_rewrite, $page_rewrite, $this->extra_rules ); 1458 } 1459 1460 /** 1461 * Fires after the rewrite rules are generated. 1462 * 1463 * @since 1.5.0 1464 * 1465 * @param WP_Rewrite $wp_rewrite Current WP_Rewrite instance (passed by reference). 1466 */ 1467 do_action_ref_array( 'generate_rewrite_rules', array( &$this ) ); 1468 1469 /** 1470 * Filters the full set of generated rewrite rules. 1471 * 1472 * @since 1.5.0 1473 * 1474 * @param string[] $rules The compiled array of rewrite rules, keyed by their regex pattern. 1475 */ 1476 $this->rules = apply_filters( 'rewrite_rules_array', $this->rules ); 1477 1478 return $this->rules; 1479 } 1480 1481 /** 1482 * Retrieves the rewrite rules. 1483 * 1484 * The difference between this method and WP_Rewrite::rewrite_rules() is that 1485 * this method stores the rewrite rules in the 'rewrite_rules' option and retrieves 1486 * it. This prevents having to process all of the permalinks to get the rewrite rules 1487 * in the form of caching. 1488 * 1489 * @since 1.5.0 1490 * 1491 * @return string[] Array of rewrite rules keyed by their regex pattern. 1492 */ 1493 public function wp_rewrite_rules() { 1494 $this->rules = get_option( 'rewrite_rules' ); 1495 if ( empty( $this->rules ) ) { 1496 $this->refresh_rewrite_rules(); 1497 } 1498 1499 return $this->rules; 1500 } 1501 1502 /** 1503 * Refreshes the rewrite rules, saving the fresh value to the database. 1504 * 1505 * If the {@see 'wp_loaded'} action has not occurred yet, will postpone saving to the database. 1506 * 1507 * @since 6.4.0 1508 */ 1509 private function refresh_rewrite_rules() { 1510 $this->rules = ''; 1511 $this->matches = 'matches'; 1512 1513 $this->rewrite_rules(); 1514 1515 if ( ! did_action( 'wp_loaded' ) ) { 1516 /* 1517 * It is not safe to save the results right now, as the rules may be partial. 1518 * Need to give all rules the chance to register. 1519 */ 1520 add_action( 'wp_loaded', array( $this, 'flush_rules' ) ); 1521 } else { 1522 update_option( 'rewrite_rules', $this->rules ); 1523 } 1524 } 1525 1526 /** 1527 * Retrieves mod_rewrite-formatted rewrite rules to write to .htaccess. 1528 * 1529 * Does not actually write to the .htaccess file, but creates the rules for 1530 * the process that will. 1531 * 1532 * Will add the non_wp_rules property rules to the .htaccess file before 1533 * the WordPress rewrite rules one. 1534 * 1535 * @since 1.5.0 1536 * 1537 * @return string 1538 */ 1539 public function mod_rewrite_rules() { 1540 if ( ! $this->using_permalinks() ) { 1541 return ''; 1542 } 1543 1544 $site_root = parse_url( site_url() ); 1545 if ( isset( $site_root['path'] ) ) { 1546 $site_root = trailingslashit( $site_root['path'] ); 1547 } 1548 1549 $home_root = parse_url( home_url() ); 1550 if ( isset( $home_root['path'] ) ) { 1551 $home_root = trailingslashit( $home_root['path'] ); 1552 } else { 1553 $home_root = '/'; 1554 } 1555 1556 $rules = "<IfModule mod_rewrite.c>\n"; 1557 $rules .= "RewriteEngine On\n"; 1558 $rules .= "RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]\n"; 1559 $rules .= "RewriteBase $home_root\n"; 1560 1561 // Prevent -f checks on index.php. 1562 $rules .= "RewriteRule ^index\.php$ - [L]\n"; 1563 1564 // Add in the rules that don't redirect to WP's index.php (and thus shouldn't be handled by WP at all). 1565 foreach ( (array) $this->non_wp_rules as $match => $query ) { 1566 // Apache 1.3 does not support the reluctant (non-greedy) modifier. 1567 $match = str_replace( '.+?', '.+', $match ); 1568 1569 $rules .= 'RewriteRule ^' . $match . ' ' . $home_root . $query . " [QSA,L]\n"; 1570 } 1571 1572 if ( $this->use_verbose_rules ) { 1573 $this->matches = ''; 1574 $rewrite = $this->rewrite_rules(); 1575 $num_rules = count( $rewrite ); 1576 $rules .= "RewriteCond %{REQUEST_FILENAME} -f [OR]\n" . 1577 "RewriteCond %{REQUEST_FILENAME} -d\n" . 1578 "RewriteRule ^.*$ - [S=$num_rules]\n"; 1579 1580 foreach ( (array) $rewrite as $match => $query ) { 1581 // Apache 1.3 does not support the reluctant (non-greedy) modifier. 1582 $match = str_replace( '.+?', '.+', $match ); 1583 1584 if ( str_contains( $query, $this->index ) ) { 1585 $rules .= 'RewriteRule ^' . $match . ' ' . $home_root . $query . " [QSA,L]\n"; 1586 } else { 1587 $rules .= 'RewriteRule ^' . $match . ' ' . $site_root . $query . " [QSA,L]\n"; 1588 } 1589 } 1590 } else { 1591 $rules .= "RewriteCond %{REQUEST_FILENAME} !-f\n" . 1592 "RewriteCond %{REQUEST_FILENAME} !-d\n" . 1593 "RewriteRule . {$home_root}{$this->index} [L]\n"; 1594 } 1595 1596 $rules .= "</IfModule>\n"; 1597 1598 /** 1599 * Filters the list of rewrite rules formatted for output to an .htaccess file. 1600 * 1601 * @since 1.5.0 1602 * 1603 * @param string $rules mod_rewrite Rewrite rules formatted for .htaccess. 1604 */ 1605 $rules = apply_filters( 'mod_rewrite_rules', $rules ); 1606 1607 /** 1608 * Filters the list of rewrite rules formatted for output to an .htaccess file. 1609 * 1610 * @since 1.5.0 1611 * @deprecated 1.5.0 Use the {@see 'mod_rewrite_rules'} filter instead. 1612 * 1613 * @param string $rules mod_rewrite Rewrite rules formatted for .htaccess. 1614 */ 1615 return apply_filters_deprecated( 'rewrite_rules', array( $rules ), '1.5.0', 'mod_rewrite_rules' ); 1616 } 1617 1618 /** 1619 * Retrieves IIS7 URL Rewrite formatted rewrite rules to write to web.config file. 1620 * 1621 * Does not actually write to the web.config file, but creates the rules for 1622 * the process that will. 1623 * 1624 * @since 2.8.0 1625 * 1626 * @param bool $add_parent_tags Optional. Whether to add parent tags to the rewrite rule sets. 1627 * Default false. 1628 * @return string IIS7 URL rewrite rule sets. 1629 */ 1630 public function iis7_url_rewrite_rules( $add_parent_tags = false ) { 1631 if ( ! $this->using_permalinks() ) { 1632 return ''; 1633 } 1634 $rules = ''; 1635 if ( $add_parent_tags ) { 1636 $rules .= '<configuration> 1637 <system.webServer> 1638 <rewrite> 1639 <rules>'; 1640 } 1641 1642 $rules .= ' 1643 <rule name="WordPress: ' . esc_attr( home_url() ) . '" patternSyntax="Wildcard"> 1644 <match url="*" /> 1645 <conditions> 1646 <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" /> 1647 <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" /> 1648 </conditions> 1649 <action type="Rewrite" url="index.php" /> 1650 </rule>'; 1651 1652 if ( $add_parent_tags ) { 1653 $rules .= ' 1654 </rules> 1655 </rewrite> 1656 </system.webServer> 1657 </configuration>'; 1658 } 1659 1660 /** 1661 * Filters the list of rewrite rules formatted for output to a web.config. 1662 * 1663 * @since 2.8.0 1664 * 1665 * @param string $rules Rewrite rules formatted for IIS web.config. 1666 */ 1667 return apply_filters( 'iis7_url_rewrite_rules', $rules ); 1668 } 1669 1670 /** 1671 * Adds a rewrite rule that transforms a URL structure to a set of query vars. 1672 * 1673 * Any value in the $after parameter that isn't 'bottom' will result in the rule 1674 * being placed at the top of the rewrite rules. 1675 * 1676 * @since 2.1.0 1677 * @since 4.4.0 Array support was added to the `$query` parameter. 1678 * 1679 * @param string $regex Regular expression to match request against. 1680 * @param string|array $query The corresponding query vars for this rewrite rule. 1681 * @param string $after Optional. Priority of the new rule. Accepts 'top' 1682 * or 'bottom'. Default 'bottom'. 1683 */ 1684 public function add_rule( $regex, $query, $after = 'bottom' ) { 1685 if ( is_array( $query ) ) { 1686 $external = false; 1687 $query = add_query_arg( $query, 'index.php' ); 1688 } else { 1689 $index = ! str_contains( $query, '?' ) ? strlen( $query ) : strpos( $query, '?' ); 1690 $front = substr( $query, 0, $index ); 1691 1692 $external = $front !== $this->index; 1693 } 1694 1695 // "external" = it doesn't correspond to index.php. 1696 if ( $external ) { 1697 $this->add_external_rule( $regex, $query ); 1698 } else { 1699 if ( 'bottom' === $after ) { 1700 $this->extra_rules = array_merge( $this->extra_rules, array( $regex => $query ) ); 1701 } else { 1702 $this->extra_rules_top = array_merge( $this->extra_rules_top, array( $regex => $query ) ); 1703 } 1704 } 1705 } 1706 1707 /** 1708 * Adds a rewrite rule that doesn't correspond to index.php. 1709 * 1710 * @since 2.1.0 1711 * 1712 * @param string $regex Regular expression to match request against. 1713 * @param string $query The corresponding query vars for this rewrite rule. 1714 */ 1715 public function add_external_rule( $regex, $query ) { 1716 $this->non_wp_rules[ $regex ] = $query; 1717 } 1718 1719 /** 1720 * Adds an endpoint, like /trackback/. 1721 * 1722 * @since 2.1.0 1723 * @since 3.9.0 $query_var parameter added. 1724 * @since 4.3.0 Added support for skipping query var registration by passing `false` to `$query_var`. 1725 * 1726 * @see add_rewrite_endpoint() for full documentation. 1727 * @global WP $wp Current WordPress environment instance. 1728 * 1729 * @param string $name Name of the endpoint. 1730 * @param int $places Endpoint mask describing the places the endpoint should be added. 1731 * Accepts a mask of: 1732 * - `EP_ALL` 1733 * - `EP_NONE` 1734 * - `EP_ALL_ARCHIVES` 1735 * - `EP_ATTACHMENT` 1736 * - `EP_AUTHORS` 1737 * - `EP_CATEGORIES` 1738 * - `EP_COMMENTS` 1739 * - `EP_DATE` 1740 * - `EP_DAY` 1741 * - `EP_MONTH` 1742 * - `EP_PAGES` 1743 * - `EP_PERMALINK` 1744 * - `EP_ROOT` 1745 * - `EP_SEARCH` 1746 * - `EP_TAGS` 1747 * - `EP_YEAR` 1748 * @param string|bool $query_var Optional. Name of the corresponding query variable. Pass `false` to 1749 * skip registering a query_var for this endpoint. Defaults to the 1750 * value of `$name`. 1751 */ 1752 public function add_endpoint( $name, $places, $query_var = true ) { 1753 global $wp; 1754 1755 // For backward compatibility, if null has explicitly been passed as `$query_var`, assume `true`. 1756 if ( true === $query_var || null === $query_var ) { 1757 $query_var = $name; 1758 } 1759 $this->endpoints[] = array( $places, $name, $query_var ); 1760 1761 if ( $query_var ) { 1762 $wp->add_query_var( $query_var ); 1763 } 1764 } 1765 1766 /** 1767 * Adds a new permalink structure. 1768 * 1769 * A permalink structure (permastruct) is an abstract definition of a set of rewrite rules; 1770 * it is an easy way of expressing a set of regular expressions that rewrite to a set of 1771 * query strings. The new permastruct is added to the WP_Rewrite::$extra_permastructs array. 1772 * 1773 * When the rewrite rules are built by WP_Rewrite::rewrite_rules(), all of these extra 1774 * permastructs are passed to WP_Rewrite::generate_rewrite_rules() which transforms them 1775 * into the regular expressions that many love to hate. 1776 * 1777 * The `$args` parameter gives you control over how WP_Rewrite::generate_rewrite_rules() 1778 * works on the new permastruct. 1779 * 1780 * @since 2.5.0 1781 * 1782 * @param string $name Name for permalink structure. 1783 * @param string $struct Permalink structure (e.g. category/%category%) 1784 * @param array $args { 1785 * Optional. Arguments for building rewrite rules based on the permalink structure. 1786 * Default empty array. 1787 * 1788 * @type bool $with_front Whether the structure should be prepended with `WP_Rewrite::$front`. 1789 * Default true. 1790 * @type int $ep_mask The endpoint mask defining which endpoints are added to the structure. 1791 * Accepts a mask of: 1792 * - `EP_ALL` 1793 * - `EP_NONE` 1794 * - `EP_ALL_ARCHIVES` 1795 * - `EP_ATTACHMENT` 1796 * - `EP_AUTHORS` 1797 * - `EP_CATEGORIES` 1798 * - `EP_COMMENTS` 1799 * - `EP_DATE` 1800 * - `EP_DAY` 1801 * - `EP_MONTH` 1802 * - `EP_PAGES` 1803 * - `EP_PERMALINK` 1804 * - `EP_ROOT` 1805 * - `EP_SEARCH` 1806 * - `EP_TAGS` 1807 * - `EP_YEAR` 1808 * Default `EP_NONE`. 1809 * @type bool $paged Whether archive pagination rules should be added for the structure. 1810 * Default true. 1811 * @type bool $feed Whether feed rewrite rules should be added for the structure. Default true. 1812 * @type bool $forcomments Whether the feed rules should be a query for a comments feed. Default false. 1813 * @type bool $walk_dirs Whether the 'directories' making up the structure should be walked over 1814 * and rewrite rules built for each in-turn. Default true. 1815 * @type bool $endpoints Whether endpoints should be applied to the generated rules. Default true. 1816 * } 1817 */ 1818 public function add_permastruct( $name, $struct, $args = array() ) { 1819 // Back-compat for the old parameters: $with_front and $ep_mask. 1820 if ( ! is_array( $args ) ) { 1821 $args = array( 'with_front' => $args ); 1822 } 1823 1824 if ( func_num_args() === 4 ) { 1825 $args['ep_mask'] = func_get_arg( 3 ); 1826 } 1827 1828 $defaults = array( 1829 'with_front' => true, 1830 'ep_mask' => EP_NONE, 1831 'paged' => true, 1832 'feed' => true, 1833 'forcomments' => false, 1834 'walk_dirs' => true, 1835 'endpoints' => true, 1836 ); 1837 1838 $args = array_intersect_key( $args, $defaults ); 1839 $args = wp_parse_args( $args, $defaults ); 1840 1841 if ( $args['with_front'] ) { 1842 $struct = $this->front . $struct; 1843 } else { 1844 $struct = $this->root . $struct; 1845 } 1846 1847 $args['struct'] = $struct; 1848 1849 $this->extra_permastructs[ $name ] = $args; 1850 } 1851 1852 /** 1853 * Removes a permalink structure. 1854 * 1855 * @since 4.5.0 1856 * 1857 * @param string $name Name for permalink structure. 1858 */ 1859 public function remove_permastruct( $name ) { 1860 unset( $this->extra_permastructs[ $name ] ); 1861 } 1862 1863 /** 1864 * Removes rewrite rules and then recreate rewrite rules. 1865 * 1866 * Calls WP_Rewrite::wp_rewrite_rules() after removing the 'rewrite_rules' option. 1867 * If the function named 'save_mod_rewrite_rules' exists, it will be called. 1868 * 1869 * @since 2.0.1 1870 * 1871 * @param bool $hard Whether to update .htaccess (hard flush) or just update rewrite_rules option (soft flush). Default is true (hard). 1872 */ 1873 public function flush_rules( $hard = true ) { 1874 static $do_hard_later = null; 1875 1876 // Prevent this action from running before everyone has registered their rewrites. 1877 if ( ! did_action( 'wp_loaded' ) ) { 1878 add_action( 'wp_loaded', array( $this, 'flush_rules' ) ); 1879 $do_hard_later = ( isset( $do_hard_later ) ) ? $do_hard_later || $hard : $hard; 1880 return; 1881 } 1882 1883 if ( isset( $do_hard_later ) ) { 1884 $hard = $do_hard_later; 1885 unset( $do_hard_later ); 1886 } 1887 1888 $this->refresh_rewrite_rules(); 1889 1890 /** 1891 * Filters whether a "hard" rewrite rule flush should be performed when requested. 1892 * 1893 * A "hard" flush updates .htaccess (Apache) or web.config (IIS). 1894 * 1895 * @since 3.7.0 1896 * 1897 * @param bool $hard Whether to flush rewrite rules "hard". Default true. 1898 */ 1899 if ( ! $hard || ! apply_filters( 'flush_rewrite_rules_hard', true ) ) { 1900 return; 1901 } 1902 if ( function_exists( 'save_mod_rewrite_rules' ) ) { 1903 save_mod_rewrite_rules(); 1904 } 1905 if ( function_exists( 'iis7_save_url_rewrite_rules' ) ) { 1906 iis7_save_url_rewrite_rules(); 1907 } 1908 } 1909 1910 /** 1911 * Sets up the object's properties. 1912 * 1913 * The 'use_verbose_page_rules' object property will be set to true if the 1914 * permalink structure begins with one of the following: '%postname%', '%category%', 1915 * '%tag%', or '%author%'. 1916 * 1917 * @since 1.5.0 1918 */ 1919 public function init() { 1920 $this->extra_rules = array(); 1921 $this->non_wp_rules = array(); 1922 $this->endpoints = array(); 1923 $this->permalink_structure = get_option( 'permalink_structure' ); 1924 $this->front = substr( $this->permalink_structure, 0, strpos( $this->permalink_structure, '%' ) ); 1925 $this->root = ''; 1926 1927 if ( $this->using_index_permalinks() ) { 1928 $this->root = $this->index . '/'; 1929 } 1930 1931 unset( $this->author_structure ); 1932 unset( $this->date_structure ); 1933 unset( $this->page_structure ); 1934 unset( $this->search_structure ); 1935 unset( $this->feed_structure ); 1936 unset( $this->comment_feed_structure ); 1937 1938 $this->use_trailing_slashes = str_ends_with( $this->permalink_structure, '/' ); 1939 1940 // Enable generic rules for pages if permalink structure doesn't begin with a wildcard. 1941 if ( preg_match( '/^[^%]*%(?:postname|category|tag|author)%/', $this->permalink_structure ) ) { 1942 $this->use_verbose_page_rules = true; 1943 } else { 1944 $this->use_verbose_page_rules = false; 1945 } 1946 } 1947 1948 /** 1949 * Sets the main permalink structure for the site. 1950 * 1951 * Will update the 'permalink_structure' option, if there is a difference 1952 * between the current permalink structure and the parameter value. Calls 1953 * WP_Rewrite::init() after the option is updated. 1954 * 1955 * Fires the {@see 'permalink_structure_changed'} action once the init call has 1956 * processed passing the old and new values 1957 * 1958 * @since 1.5.0 1959 * 1960 * @param string $permalink_structure Permalink structure. 1961 */ 1962 public function set_permalink_structure( $permalink_structure ) { 1963 if ( $this->permalink_structure !== $permalink_structure ) { 1964 $old_permalink_structure = $this->permalink_structure; 1965 update_option( 'permalink_structure', $permalink_structure ); 1966 1967 $this->init(); 1968 1969 /** 1970 * Fires after the permalink structure is updated. 1971 * 1972 * @since 2.8.0 1973 * 1974 * @param string $old_permalink_structure The previous permalink structure. 1975 * @param string $permalink_structure The new permalink structure. 1976 */ 1977 do_action( 'permalink_structure_changed', $old_permalink_structure, $permalink_structure ); 1978 } 1979 } 1980 1981 /** 1982 * Sets the category base for the category permalink. 1983 * 1984 * Will update the 'category_base' option, if there is a difference between 1985 * the current category base and the parameter value. Calls WP_Rewrite::init() 1986 * after the option is updated. 1987 * 1988 * @since 1.5.0 1989 * 1990 * @param string $category_base Category permalink structure base. 1991 */ 1992 public function set_category_base( $category_base ) { 1993 if ( get_option( 'category_base' ) !== $category_base ) { 1994 update_option( 'category_base', $category_base ); 1995 $this->init(); 1996 } 1997 } 1998 1999 /** 2000 * Sets the tag base for the tag permalink. 2001 * 2002 * Will update the 'tag_base' option, if there is a difference between the 2003 * current tag base and the parameter value. Calls WP_Rewrite::init() after 2004 * the option is updated. 2005 * 2006 * @since 2.3.0 2007 * 2008 * @param string $tag_base Tag permalink structure base. 2009 */ 2010 public function set_tag_base( $tag_base ) { 2011 if ( get_option( 'tag_base' ) !== $tag_base ) { 2012 update_option( 'tag_base', $tag_base ); 2013 $this->init(); 2014 } 2015 } 2016 2017 /** 2018 * Constructor - Calls init(), which runs setup. 2019 * 2020 * @since 1.5.0 2021 */ 2022 public function __construct() { 2023 $this->init(); 2024 } 2025 }
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