File Content: rewrite.php <?php /** * WordPress Rewrite API * * @package WordPress * @subpackage Rewrite */ /** * Endpoint Mask for default, which is nothing. * * @since 2.1.0 */ define( 'EP_NONE', 0 ); /** * Endpoint Mask for Permalink. * * @since 2.1.0 */ define( 'EP_PERMALINK', 1 ); /** * Endpoint Mask for Attachment. * * @since 2.1.0 */ define( 'EP_ATTACHMENT', 2 ); /** * Endpoint Mask for date. * * @since 2.1.0 */ define( 'EP_DATE', 4 ); /** * Endpoint Mask for year * * @since 2.1.0 */ define( 'EP_YEAR', 8 ); /** * Endpoint Mask for month. * * @since 2.1.0 */ define( 'EP_MONTH', 16 ); /** * Endpoint Mask for day. * * @since 2.1.0 */ define( 'EP_DAY', 32 ); /** * Endpoint Mask for root. * * @since 2.1.0 */ define( 'EP_ROOT', 64 ); /** * Endpoint Mask for comments. * * @since 2.1.0 */ define( 'EP_COMMENTS', 128 ); /** * Endpoint Mask for searches. * * @since 2.1.0 */ define( 'EP_SEARCH', 256 ); /** * Endpoint Mask for categories. * * @since 2.1.0 */ define( 'EP_CATEGORIES', 512 ); /** * Endpoint Mask for tags. * * @since 2.3.0 */ define( 'EP_TAGS', 1024 ); /** * Endpoint Mask for authors. * * @since 2.1.0 */ define( 'EP_AUTHORS', 2048 ); /** * Endpoint Mask for pages. * * @since 2.1.0 */ define( 'EP_PAGES', 4096 ); /** * Endpoint Mask for all archive views. * * @since 3.7.0 */ define( 'EP_ALL_ARCHIVES', EP_DATE | EP_YEAR | EP_MONTH | EP_DAY | EP_CATEGORIES | EP_TAGS | EP_AUTHORS ); /** * Endpoint Mask for everything. * * @since 2.1.0 */ define( 'EP_ALL', EP_PERMALINK | EP_ATTACHMENT | EP_ROOT | EP_COMMENTS | EP_SEARCH | EP_PAGES | EP_ALL_ARCHIVES ); /** * Adds a rewrite rule that transforms a URL structure to a set of query vars. * * Any value in the $after parameter that isn't 'bottom' will result in the rule * being placed at the top of the rewrite rules. * * @since 2.1.0 * @since 4.4.0 Array support was added to the `$query` parameter. * * @global WP_Rewrite $wp_rewrite WordPress Rewrite Component. * * @param string $regex Regular expression to match request against. * @param string|array $query The corresponding query vars for this rewrite rule. * @param string $after Optional. Priority of the new rule. Accepts 'top' * or 'bottom'. Default 'bottom'. */ function add_rewrite_rule( $regex, $query, $after = 'bottom' ) { global $wp_rewrite; $wp_rewrite->add_rule( $regex, $query, $after ); } /** * Add a new rewrite tag (like %postname%). * * The $query parameter is optional. If it is omitted you must ensure that * you call this on, or before, the {@see 'init'} hook. This is because $query defaults * to "$tag=", and for this to work a new query var has to be added. * * @since 2.1.0 * * @global WP_Rewrite $wp_rewrite * @global WP $wp * * @param string $tag Name of the new rewrite tag. * @param string $regex Regular expression to substitute the tag for in rewrite rules. * @param string $query Optional. String to append to the rewritten query. Must end in '='. Default empty. */ function add_rewrite_tag( $tag, $regex, $query = '' ) { // validate the tag's name if ( strlen( $tag ) < 3 || $tag[0] != '%' || $tag[ strlen( $tag ) - 1 ] != '%' ) { return; } global $wp_rewrite, $wp; if ( empty( $query ) ) { $qv = trim( $tag, '%' ); $wp->add_query_var( $qv ); $query = $qv . '='; } $wp_rewrite->add_rewrite_tag( $tag, $regex, $query ); } /** * Removes an existing rewrite tag (like %postname%). * * @since 4.5.0 * * @global WP_Rewrite $wp_rewrite WordPress rewrite component. * * @param string $tag Name of the rewrite tag. */ function remove_rewrite_tag( $tag ) { global $wp_rewrite; $wp_rewrite->remove_rewrite_tag( $tag ); } /** * Add permalink structure. * * @since 3.0.0 * * @see WP_Rewrite::add_permastruct() * @global WP_Rewrite $wp_rewrite WordPress rewrite component. * * @param string $name Name for permalink structure. * @param string $struct Permalink structure. * @param array $args Optional. Arguments for building the rules from the permalink structure, * see WP_Rewrite::add_permastruct() for full details. Default empty array. */ function add_permastruct( $name, $struct, $args = array() ) { global $wp_rewrite; // Back-compat for the old parameters: $with_front and $ep_mask. if ( ! is_array( $args ) ) { $args = array( 'with_front' => $args ); } if ( func_num_args() == 4 ) { $args['ep_mask'] = func_get_arg( 3 ); } $wp_rewrite->add_permastruct( $name, $struct, $args ); } /** * Removes a permalink structure. * * Can only be used to remove permastructs that were added using add_permastruct(). * Built-in permastructs cannot be removed. * * @since 4.5.0 * * @see WP_Rewrite::remove_permastruct() * @global WP_Rewrite $wp_rewrite WordPress rewrite component. * * @param string $name Name for permalink structure. */ function remove_permastruct( $name ) { global $wp_rewrite; $wp_rewrite->remove_permastruct( $name ); } /** * Add a new feed type like /atom1/. * * @since 2.1.0 * * @global WP_Rewrite $wp_rewrite * * @param string $feedname Feed name. * @param callable $function Callback to run on feed display. * @return string Feed action name. */ function add_feed( $feedname, $function ) { global $wp_rewrite; if ( ! in_array( $feedname, $wp_rewrite->feeds ) ) { $wp_rewrite->feeds[] = $feedname; } $hook = 'do_feed_' . $feedname; // Remove default function hook remove_action( $hook, $hook ); add_action( $hook, $function, 10, 2 ); return $hook; } /** * Remove rewrite rules and then recreate rewrite rules. * * @since 3.0.0 * * @global WP_Rewrite $wp_rewrite * * @param bool $hard Whether to update .htaccess (hard flush) or just update * rewrite_rules transient (soft flush). Default is true (hard). */ function flush_rewrite_rules( $hard = true ) { global $wp_rewrite; $wp_rewrite->flush_rules( $hard ); } /** * Add an endpoint, like /trackback/. * * Adding an endpoint creates extra rewrite rules for each of the matching * places specified by the provided bitmask. For example: * * add_rewrite_endpoint( 'json', EP_PERMALINK | EP_PAGES ); * * will add a new rewrite rule ending with "json(/(.*))?/?$" for every permastruct * that describes a permalink (post) or page. This is rewritten to "json=$match" * where $match is the part of the URL matched by the endpoint regex (e.g. "foo" in * "[permalink]/json/foo/"). * * A new query var with the same name as the endpoint will also be created. * * When specifying $places ensure that you are using the EP_* constants (or a * combination of them using the bitwise OR operator) as their values are not * guaranteed to remain static (especially `EP_ALL`). * * Be sure to flush the rewrite rules - see flush_rewrite_rules() - when your plugin gets * activated and deactivated. * * @since 2.1.0 * @since 4.3.0 Added support for skipping query var registration by passing `false` to `$query_var`. * * @global WP_Rewrite $wp_rewrite * * @param string $name Name of the endpoint. * @param int $places Endpoint mask describing the places the endpoint should be added. * @param string|bool $query_var Name of the corresponding query variable. Pass `false` to skip registering a query_var * for this endpoint. Defaults to the value of `$name`. */ function add_rewrite_endpoint( $name, $places, $query_var = true ) { global $wp_rewrite; $wp_rewrite->add_endpoint( $name, $places, $query_var ); } /** * Filters the URL base for taxonomies. * * To remove any manually prepended /index.php/. * * @access private * @since 2.6.0 * * @param string $base The taxonomy base that we're going to filter * @return string */ function _wp_filter_taxonomy_base( $base ) { if ( ! empty( $base ) ) { $base = preg_replace( '|^/index\.php/|', '', $base ); $base = trim( $base, '/' ); } return $base; } /** * Resolve numeric slugs that collide with date permalinks. * * Permalinks of posts with numeric slugs can sometimes look to WP_Query::parse_query() * like a date archive, as when your permalink structure is `/%year%/%postname%/` and * a post with post_name '05' has the URL `/2015/05/`. * * This function detects conflicts of this type and resolves them in favor of the * post permalink. * * Note that, since 4.3.0, wp_unique_post_slug() prevents the creation of post slugs * that would result in a date archive conflict. The resolution performed in this * function is primarily for legacy content, as well as cases when the admin has changed * the site's permalink structure in a way that introduces URL conflicts. * * @since 4.3.0 * * @param array $query_vars Optional. Query variables for setting up the loop, as determined in * WP::parse_request(). Default empty array. * @return array Returns the original array of query vars, with date/post conflicts resolved. */ function wp_resolve_numeric_slug_conflicts( $query_vars = array() ) { if ( ! isset( $query_vars['year'] ) && ! isset( $query_vars['monthnum'] ) && ! isset( $query_vars['day'] ) ) { return $query_vars; } // Identify the 'postname' position in the permastruct array. $permastructs = array_values( array_filter( explode( '/', get_option( 'permalink_structure' ) ) ) ); $postname_index = array_search( '%postname%', $permastructs ); if ( false === $postname_index ) { return $query_vars; } /* * A numeric slug could be confused with a year, month, or day, depending on position. To account for * the possibility of post pagination (eg 2015/2 for the second page of a post called '2015'), our * `is_*` checks are generous: check for year-slug clashes when `is_year` *or* `is_month`, and check * for month-slug clashes when `is_month` *or* `is_day`. */ $compare = ''; if ( 0 === $postname_index && ( isset( $query_vars['year'] ) || isset( $query_vars['monthnum'] ) ) ) { $compare = 'year'; } elseif ( '%year%' === $permastructs[ $postname_index - 1 ] && ( isset( $query_vars['monthnum'] ) || isset( $query_vars['day'] ) ) ) { $compare = 'monthnum'; } elseif ( '%monthnum%' === $permastructs[ $postname_index - 1 ] && isset( $query_vars['day'] ) ) { $compare = 'day'; } if ( ! $compare ) { return $query_vars; } // This is the potentially clashing slug. $value = $query_vars[ $compare ]; $post = get_page_by_path( $value, OBJECT, 'post' ); if ( ! ( $post instanceof WP_Post ) ) { return $query_vars; } // If the date of the post doesn't match the date specified in the URL, resolve to the date archive. if ( preg_match( '/^([0-9]{4})\-([0-9]{2})/', $post->post_date, $matches ) && isset( $query_vars['year'] ) && ( 'monthnum' === $compare || 'day' === $compare ) ) { // $matches[1] is the year the post was published. if ( intval( $query_vars['year'] ) !== intval( $matches[1] ) ) { return $query_vars; } // $matches[2] is the month the post was published. if ( 'day' === $compare && isset( $query_vars['monthnum'] ) && intval( $query_vars['monthnum'] ) !== intval( $matches[2] ) ) { return $query_vars; } } /* * If the located post contains nextpage pagination, then the URL chunk following postname may be * intended as the page number. Verify that it's a valid page before resolving to it. */ $maybe_page = ''; if ( 'year' === $compare && isset( $query_vars['monthnum'] ) ) { $maybe_page = $query_vars['monthnum']; } elseif ( 'monthnum' === $compare && isset( $query_vars['day'] ) ) { $maybe_page = $query_vars['day']; } // Bug found in #11694 - 'page' was returning '/4' $maybe_page = (int) trim( $maybe_page, '/' ); $post_page_count = substr_count( $post->post_content, '<!--nextpage-->' ) + 1; // If the post doesn't have multiple pages, but a 'page' candidate is found, resolve to the date archive. if ( 1 === $post_page_count && $maybe_page ) { return $query_vars; } // If the post has multiple pages and the 'page' number isn't valid, resolve to the date archive. if ( $post_page_count > 1 && $maybe_page > $post_page_count ) { return $query_vars; } // If we've gotten to this point, we have a slug/date clash. First, adjust for nextpage. if ( '' !== $maybe_page ) { $query_vars['page'] = intval( $maybe_page ); } // Next, unset autodetected date-related query vars. unset( $query_vars['year'] ); unset( $query_vars['monthnum'] ); unset( $query_vars['day'] ); // Then, set the identified post. $query_vars['name'] = $post->post_name; // Finally, return the modified query vars. return $query_vars; } /** * Examine a URL and try to determine the post ID it represents. * * Checks are supposedly from the hosted site blog. * * @since 1.0.0 * * @global WP_Rewrite $wp_rewrite * @global WP $wp * * @param string $url Permalink to check. * @return int Post ID, or 0 on failure. */ function url_to_postid( $url ) { global $wp_rewrite; /** * Filters the URL to derive the post ID from. * * @since 2.2.0 * * @param string $url The URL to derive the post ID from. */ $url = apply_filters( 'url_to_postid', $url ); $url_host = str_replace( 'www.', '', parse_url( $url, PHP_URL_HOST ) ); $home_url_host = str_replace( 'www.', '', parse_url( home_url(), PHP_URL_HOST ) ); // Bail early if the URL does not belong to this site. if ( $url_host && $url_host !== $home_url_host ) { return 0; } // First, check to see if there is a 'p=N' or 'page_id=N' to match against if ( preg_match( '#[?&](p|page_id|attachment_id)=(\d+)#', $url, $values ) ) { $id = absint( $values[2] ); if ( $id ) { return $id; } } // Get rid of the #anchor $url_split = explode( '#', $url ); $url = $url_split[0]; // Get rid of URL ?query=string $url_split = explode( '?', $url ); $url = $url_split[0]; // Set the correct URL scheme. $scheme = parse_url( home_url(), PHP_URL_SCHEME ); $url = set_url_scheme( $url, $scheme ); // Add 'www.' if it is absent and should be there if ( false !== strpos( home_url(), '://www.' ) && false === strpos( $url, '://www.' ) ) { $url = str_replace( '://', '://www.', $url ); } // Strip 'www.' if it is present and shouldn't be if ( false === strpos( home_url(), '://www.' ) ) { $url = str_replace( '://www.', '://', $url ); } if ( trim( $url, '/' ) === home_url() && 'page' == get_option( 'show_on_front' ) ) { $page_on_front = get_option( 'page_on_front' ); if ( $page_on_front && get_post( $page_on_front ) instanceof WP_Post ) { return (int) $page_on_front; } } // Check to see if we are using rewrite rules $rewrite = $wp_rewrite->wp_rewrite_rules(); // Not using rewrite rules, and 'p=N' and 'page_id=N' methods failed, so we're out of options if ( empty( $rewrite ) ) { return 0; } // Strip 'index.php/' if we're not using path info permalinks if ( ! $wp_rewrite->using_index_permalinks() ) { $url = str_replace( $wp_rewrite->index . '/', '', $url ); } if ( false !== strpos( trailingslashit( $url ), home_url( '/' ) ) ) { // Chop off http://domain.com/[path] $url = str_replace( home_url(), '', $url ); } else { // Chop off /path/to/blog $home_path = parse_url( home_url( '/' ) ); $home_path = isset( $home_path['path'] ) ? $home_path['path'] : ''; $url = preg_replace( sprintf( '#^%s#', preg_quote( $home_path ) ), '', trailingslashit( $url ) ); } // Trim leading and lagging slashes $url = trim( $url, '/' ); $request = $url; $post_type_query_vars = array(); foreach ( get_post_types( array(), 'objects' ) as $post_type => $t ) { if ( ! empty( $t->query_var ) ) { $post_type_query_vars[ $t->query_var ] = $post_type; } } // Look for matches. $request_match = $request; foreach ( (array) $rewrite as $match => $query ) { // If the requesting file is the anchor of the match, prepend it // to the path info. if ( ! empty( $url ) && ( $url != $request ) && ( strpos( $match, $url ) === 0 ) ) { $request_match = $url . '/' . $request; } if ( preg_match( "#^$match#", $request_match, $matches ) ) { if ( $wp_rewrite->use_verbose_page_rules && preg_match( '/pagename=\$matches\[([0-9]+)\]/', $query, $varmatch ) ) { // This is a verbose page match, let's check to be sure about it. $page = get_page_by_path( $matches[ $varmatch[1] ] ); if ( ! $page ) { continue; } $post_status_obj = get_post_status_object( $page->post_status ); if ( ! $post_status_obj->public && ! $post_status_obj->protected && ! $post_status_obj->private && $post_status_obj->exclude_from_search ) { continue; } } // Got a match. // Trim the query of everything up to the '?'. $query = preg_replace( '!^.+\?!', '', $query ); // Substitute the substring matches into the query. $query = addslashes( WP_MatchesMapRegex::apply( $query, $matches ) ); // Filter out non-public query vars global $wp; parse_str( $query, $query_vars ); $query = array(); foreach ( (array) $query_vars as $key => $value ) { if ( in_array( $key, $wp->public_query_vars ) ) { $query[ $key ] = $value; if ( isset( $post_type_query_vars[ $key ] ) ) { $query['post_type'] = $post_type_query_vars[ $key ]; $query['name'] = $value; } } } // Resolve conflicts between posts with numeric slugs and date archive queries. $query = wp_resolve_numeric_slug_conflicts( $query ); // Do the query $query = new WP_Query( $query ); if ( ! empty( $query->posts ) && $query->is_singular ) { return $query->post->ID; } else { return 0; } } } return 0; } Submit