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bac64cc984
Fixes #34259. Built from https://develop.svn.wordpress.org/trunk@35119 git-svn-id: http://core.svn.wordpress.org/trunk@35084 1a063a9b-81f0-0310-95a4-ce76da25c4cd
439 lines
14 KiB
PHP
439 lines
14 KiB
PHP
<?php
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/**
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* WordPress Rewrite API
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*
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* @package WordPress
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* @subpackage Rewrite
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*/
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/**
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* Adds a rewrite rule that transforms a URL structure to a set of query vars.
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*
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* Any value in the $after parameter that isn't 'bottom' will result in the rule
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* being placed at the top of the rewrite rules.
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*
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* @since 2.1.0
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* @since 4.4.0 Array support was added to the `$query` parameter.
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*
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* @global WP_Rewrite $wp_rewrite WordPress Rewrite Component.
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*
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* @param string $regex Regular expression to match request against.
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* @param string|array $query The corresponding query vars for this rewrite rule.
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* @param string $after Optional. Priority of the new rule. Accepts 'top'
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* or 'bottom'. Default 'bottom'.
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*/
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function add_rewrite_rule( $regex, $query, $after = 'bottom' ) {
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global $wp_rewrite;
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$wp_rewrite->add_rule( $regex, $query, $after );
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}
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/**
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* Add a new rewrite tag (like %postname%).
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*
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* The $query parameter is optional. If it is omitted you must ensure that
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* you call this on, or before, the 'init' hook. This is because $query defaults
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* to "$tag=", and for this to work a new query var has to be added.
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*
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* @since 2.1.0
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*
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* @global WP_Rewrite $wp_rewrite
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* @global WP $wp
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*
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* @param string $tag Name of the new rewrite tag.
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* @param string $regex Regular expression to substitute the tag for in rewrite rules.
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* @param string $query Optional. String to append to the rewritten query. Must end in '='. Default empty.
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*/
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function add_rewrite_tag( $tag, $regex, $query = '' ) {
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// validate the tag's name
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if ( strlen( $tag ) < 3 || $tag[0] != '%' || $tag[ strlen($tag) - 1 ] != '%' )
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return;
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global $wp_rewrite, $wp;
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if ( empty( $query ) ) {
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$qv = trim( $tag, '%' );
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$wp->add_query_var( $qv );
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$query = $qv . '=';
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}
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$wp_rewrite->add_rewrite_tag( $tag, $regex, $query );
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}
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/**
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* Add permalink structure.
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*
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* @since 3.0.0
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*
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* @see WP_Rewrite::add_permastruct()
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* @global WP_Rewrite $wp_rewrite
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*
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* @param string $name Name for permalink structure.
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* @param string $struct Permalink structure.
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* @param array $args Optional. Arguments for building the rules from the permalink structure,
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* see WP_Rewrite::add_permastruct() for full details. Default empty array.
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*/
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function add_permastruct( $name, $struct, $args = array() ) {
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global $wp_rewrite;
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// backwards compatibility for the old parameters: $with_front and $ep_mask
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if ( ! is_array( $args ) )
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$args = array( 'with_front' => $args );
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if ( func_num_args() == 4 )
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$args['ep_mask'] = func_get_arg( 3 );
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$wp_rewrite->add_permastruct( $name, $struct, $args );
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}
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/**
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* Add a new feed type like /atom1/.
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*
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* @since 2.1.0
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*
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* @global WP_Rewrite $wp_rewrite
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*
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* @param string $feedname Feed name.
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* @param callable $function Callback to run on feed display.
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* @return string Feed action name.
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*/
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function add_feed( $feedname, $function ) {
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global $wp_rewrite;
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if ( ! in_array( $feedname, $wp_rewrite->feeds ) ) {
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// Override the file if it is
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$wp_rewrite->feeds[] = $feedname;
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}
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$hook = 'do_feed_' . $feedname;
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// Remove default function hook
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remove_action( $hook, $hook );
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add_action( $hook, $function, 10, 2 );
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return $hook;
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}
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/**
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* Remove rewrite rules and then recreate rewrite rules.
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*
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* @since 3.0.0
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*
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* @global WP_Rewrite $wp_rewrite
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*
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* @param bool $hard Whether to update .htaccess (hard flush) or just update
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* rewrite_rules transient (soft flush). Default is true (hard).
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*/
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function flush_rewrite_rules( $hard = true ) {
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global $wp_rewrite;
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$wp_rewrite->flush_rules( $hard );
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}
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/**
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* Add an endpoint, like /trackback/.
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*
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* Adding an endpoint creates extra rewrite rules for each of the matching
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* places specified by the provided bitmask. For example:
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*
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* add_rewrite_endpoint( 'json', EP_PERMALINK | EP_PAGES );
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*
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* will add a new rewrite rule ending with "json(/(.*))?/?$" for every permastruct
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* that describes a permalink (post) or page. This is rewritten to "json=$match"
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* where $match is the part of the URL matched by the endpoint regex (e.g. "foo" in
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* "[permalink]/json/foo/").
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*
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* A new query var with the same name as the endpoint will also be created.
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*
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* When specifying $places ensure that you are using the EP_* constants (or a
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* combination of them using the bitwise OR operator) as their values are not
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* guaranteed to remain static (especially `EP_ALL`).
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*
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* Be sure to flush the rewrite rules - see flush_rewrite_rules() - when your plugin gets
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* activated and deactivated.
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*
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* @since 2.1.0
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* @since 4.3.0 Added support for skipping query var registration by passing `false` to `$query_var`.
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*
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* @global WP_Rewrite $wp_rewrite
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*
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* @param string $name Name of the endpoint.
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* @param int $places Endpoint mask describing the places the endpoint should be added.
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* @param string|bool $query_var Name of the corresponding query variable. Pass `false` to skip registering a query_var
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* for this endpoint. Defaults to the value of `$name`.
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*/
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function add_rewrite_endpoint( $name, $places, $query_var = true ) {
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global $wp_rewrite;
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$wp_rewrite->add_endpoint( $name, $places, $query_var );
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}
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/**
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* Filter the URL base for taxonomies.
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*
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* To remove any manually prepended /index.php/.
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*
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* @access private
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* @since 2.6.0
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*
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* @param string $base The taxonomy base that we're going to filter
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* @return string
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*/
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function _wp_filter_taxonomy_base( $base ) {
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if ( !empty( $base ) ) {
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$base = preg_replace( '|^/index\.php/|', '', $base );
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$base = trim( $base, '/' );
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}
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return $base;
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}
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/**
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* Resolve numeric slugs that collide with date permalinks.
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*
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* Permalinks of posts with numeric slugs can sometimes look to WP_Query::parse_query()
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* like a date archive, as when your permalink structure is `/%year%/%postname%/` and
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* a post with post_name '05' has the URL `/2015/05/`.
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*
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* This function detects conflicts of this type and resolves them in favor of the
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* post permalink.
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*
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* Note that, since 4.3.0, wp_unique_post_slug() prevents the creation of post slugs
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* that would result in a date archive conflict. The resolution performed in this
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* function is primarily for legacy content, as well as cases when the admin has changed
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* the site's permalink structure in a way that introduces URL conflicts.
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*
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* @since 4.3.0
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*
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* @param array $query_vars Optional. Query variables for setting up the loop, as determined in
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* WP::parse_request(). Default empty array.
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* @return array Returns the original array of query vars, with date/post conflicts resolved.
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*/
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function wp_resolve_numeric_slug_conflicts( $query_vars = array() ) {
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if ( ! isset( $query_vars['year'] ) && ! isset( $query_vars['monthnum'] ) && ! isset( $query_vars['day'] ) ) {
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return $query_vars;
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}
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// Identify the 'postname' position in the permastruct array.
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$permastructs = array_values( array_filter( explode( '/', get_option( 'permalink_structure' ) ) ) );
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$postname_index = array_search( '%postname%', $permastructs );
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if ( false === $postname_index ) {
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return $query_vars;
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}
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/*
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* A numeric slug could be confused with a year, month, or day, depending on position. To account for
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* the possibility of post pagination (eg 2015/2 for the second page of a post called '2015'), our
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* `is_*` checks are generous: check for year-slug clashes when `is_year` *or* `is_month`, and check
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* for month-slug clashes when `is_month` *or* `is_day`.
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*/
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$compare = '';
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if ( 0 === $postname_index && ( isset( $query_vars['year'] ) || isset( $query_vars['monthnum'] ) ) ) {
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$compare = 'year';
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} elseif ( '%year%' === $permastructs[ $postname_index - 1 ] && ( isset( $query_vars['monthnum'] ) || isset( $query_vars['day'] ) ) ) {
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$compare = 'monthnum';
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} elseif ( '%monthnum%' === $permastructs[ $postname_index - 1 ] && isset( $query_vars['day'] ) ) {
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$compare = 'day';
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}
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if ( ! $compare ) {
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return $query_vars;
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}
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// This is the potentially clashing slug.
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$value = $query_vars[ $compare ];
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$post = get_page_by_path( $value, OBJECT, 'post' );
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if ( ! ( $post instanceof WP_Post ) ) {
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return $query_vars;
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}
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// If the date of the post doesn't match the date specified in the URL, resolve to the date archive.
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if ( preg_match( '/^([0-9]{4})\-([0-9]{2})/', $post->post_date, $matches ) && isset( $query_vars['year'] ) && ( 'monthnum' === $compare || 'day' === $compare ) ) {
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// $matches[1] is the year the post was published.
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if ( intval( $query_vars['year'] ) !== intval( $matches[1] ) ) {
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return $query_vars;
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}
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// $matches[2] is the month the post was published.
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if ( 'day' === $compare && isset( $query_vars['monthnum'] ) && intval( $query_vars['monthnum'] ) !== intval( $matches[2] ) ) {
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return $query_vars;
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}
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}
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/*
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* If the located post contains nextpage pagination, then the URL chunk following postname may be
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* intended as the page number. Verify that it's a valid page before resolving to it.
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*/
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$maybe_page = '';
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if ( 'year' === $compare && isset( $query_vars['monthnum'] ) ) {
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$maybe_page = $query_vars['monthnum'];
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} elseif ( 'monthnum' === $compare && isset( $query_vars['day'] ) ) {
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$maybe_page = $query_vars['day'];
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}
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// Bug found in #11694 - 'page' was returning '/4'
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$maybe_page = (int) trim( $maybe_page, '/' );
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$post_page_count = substr_count( $post->post_content, '<!--nextpage-->' ) + 1;
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// If the post doesn't have multiple pages, but a 'page' candidate is found, resolve to the date archive.
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if ( 1 === $post_page_count && $maybe_page ) {
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return $query_vars;
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}
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// If the post has multiple pages and the 'page' number isn't valid, resolve to the date archive.
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if ( $post_page_count > 1 && $maybe_page > $post_page_count ) {
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return $query_vars;
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}
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// If we've gotten to this point, we have a slug/date clash. First, adjust for nextpage.
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if ( '' !== $maybe_page ) {
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$query_vars['page'] = intval( $maybe_page );
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}
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// Next, unset autodetected date-related query vars.
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unset( $query_vars['year'] );
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unset( $query_vars['monthnum'] );
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unset( $query_vars['day'] );
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// Then, set the identified post.
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$query_vars['name'] = $post->post_name;
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// Finally, return the modified query vars.
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return $query_vars;
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}
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/**
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* Examine a url and try to determine the post ID it represents.
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*
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* Checks are supposedly from the hosted site blog.
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*
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* @since 1.0.0
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*
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* @global WP_Rewrite $wp_rewrite
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* @global WP $wp
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*
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* @param string $url Permalink to check.
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* @return int Post ID, or 0 on failure.
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*/
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function url_to_postid( $url ) {
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global $wp_rewrite;
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/**
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* Filter the URL to derive the post ID from.
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*
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* @since 2.2.0
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*
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* @param string $url The URL to derive the post ID from.
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*/
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$url = apply_filters( 'url_to_postid', $url );
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// First, check to see if there is a 'p=N' or 'page_id=N' to match against
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if ( preg_match('#[?&](p|page_id|attachment_id)=(\d+)#', $url, $values) ) {
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$id = absint($values[2]);
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if ( $id )
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return $id;
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}
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// Check to see if we are using rewrite rules
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$rewrite = $wp_rewrite->wp_rewrite_rules();
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// Not using rewrite rules, and 'p=N' and 'page_id=N' methods failed, so we're out of options
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if ( empty($rewrite) )
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return 0;
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// Get rid of the #anchor
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$url_split = explode('#', $url);
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$url = $url_split[0];
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// Get rid of URL ?query=string
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$url_split = explode('?', $url);
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$url = $url_split[0];
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// Set the correct URL scheme.
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$url = set_url_scheme( $url );
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// Add 'www.' if it is absent and should be there
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if ( false !== strpos(home_url(), '://www.') && false === strpos($url, '://www.') )
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$url = str_replace('://', '://www.', $url);
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// Strip 'www.' if it is present and shouldn't be
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if ( false === strpos(home_url(), '://www.') )
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$url = str_replace('://www.', '://', $url);
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// Strip 'index.php/' if we're not using path info permalinks
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if ( !$wp_rewrite->using_index_permalinks() )
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$url = str_replace( $wp_rewrite->index . '/', '', $url );
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if ( false !== strpos( trailingslashit( $url ), home_url( '/' ) ) ) {
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// Chop off http://domain.com/[path]
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$url = str_replace(home_url(), '', $url);
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} else {
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// Chop off /path/to/blog
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$home_path = parse_url( home_url( '/' ) );
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$home_path = isset( $home_path['path'] ) ? $home_path['path'] : '' ;
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$url = preg_replace( sprintf( '#^%s#', preg_quote( $home_path ) ), '', trailingslashit( $url ) );
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}
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// Trim leading and lagging slashes
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$url = trim($url, '/');
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$request = $url;
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$post_type_query_vars = array();
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foreach ( get_post_types( array() , 'objects' ) as $post_type => $t ) {
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if ( ! empty( $t->query_var ) )
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$post_type_query_vars[ $t->query_var ] = $post_type;
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}
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// Look for matches.
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$request_match = $request;
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foreach ( (array)$rewrite as $match => $query) {
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// If the requesting file is the anchor of the match, prepend it
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// to the path info.
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if ( !empty($url) && ($url != $request) && (strpos($match, $url) === 0) )
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$request_match = $url . '/' . $request;
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if ( preg_match("#^$match#", $request_match, $matches) ) {
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if ( $wp_rewrite->use_verbose_page_rules && preg_match( '/pagename=\$matches\[([0-9]+)\]/', $query, $varmatch ) ) {
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// This is a verbose page match, let's check to be sure about it.
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if ( ! get_page_by_path( $matches[ $varmatch[1] ] ) )
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continue;
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}
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// Got a match.
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// Trim the query of everything up to the '?'.
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$query = preg_replace("!^.+\?!", '', $query);
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// Substitute the substring matches into the query.
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$query = addslashes(WP_MatchesMapRegex::apply($query, $matches));
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// Filter out non-public query vars
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global $wp;
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parse_str( $query, $query_vars );
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$query = array();
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foreach ( (array) $query_vars as $key => $value ) {
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if ( in_array( $key, $wp->public_query_vars ) ){
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$query[$key] = $value;
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if ( isset( $post_type_query_vars[$key] ) ) {
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$query['post_type'] = $post_type_query_vars[$key];
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$query['name'] = $value;
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}
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}
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}
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// Resolve conflicts between posts with numeric slugs and date archive queries.
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$query = wp_resolve_numeric_slug_conflicts( $query );
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// Do the query
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$query = new WP_Query( $query );
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if ( ! empty( $query->posts ) && $query->is_singular )
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return $query->post->ID;
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else
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return 0;
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}
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}
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return 0;
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}
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