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d858656023
Previously, `wp_favicon_request()` was introduced in [13205] to avoid a performance hit of serving a full 404 page on every favicon request. While working as intended, that implementation did not provide a way for theme or plugin authors to manage the behavior of favicon requests. This changeset implements the following logic (only applied if WordPress is installed in the root directory): * If there is a Site Icon set in Customizer, redirect `/favicon.ico` requests to that icon. * Otherwise, use the WordPress logo as a default icon. * If a physical `/favicon.ico` file exists, do nothing, let the server handle the request. Handling `/favicon.ico` is now more consistent with handling `/robots.txt` requests. New functions and hooks: * Introduce `is_favicon()` conditional tag to complement `is_robots()`. * Introduce `do_favicon` action to complement `do_robots` and use it in template loader. * Introduce `do_favicon()` function, hooked to the above action by default, to complement `do_robots()`. * Introduce `do_faviconico` action to complement `do_robotstxt`, for plugins to override the default behavior. * Mark `wp_favicon_request()` as deprecated in favor of `do_favicon()`. Props jonoaldersonwp, birgire, joostdevalk, mukesh27, SergeyBiryukov. Fixes #47398. Built from https://develop.svn.wordpress.org/trunk@47018 git-svn-id: http://core.svn.wordpress.org/trunk@46818 1a063a9b-81f0-0310-95a4-ce76da25c4cd
750 lines
24 KiB
PHP
750 lines
24 KiB
PHP
<?php
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/**
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* WordPress environment setup class.
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*
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* @package WordPress
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* @since 2.0.0
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*/
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class WP {
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/**
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* Public query variables.
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*
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* Long list of public query variables.
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*
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* @since 2.0.0
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* @var string[]
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*/
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public $public_query_vars = array( 'm', 'p', 'posts', 'w', 'cat', 'withcomments', 'withoutcomments', 's', 'search', 'exact', 'sentence', 'calendar', 'page', 'paged', 'more', 'tb', 'pb', 'author', 'order', 'orderby', 'year', 'monthnum', 'day', 'hour', 'minute', 'second', 'name', 'category_name', 'tag', 'feed', 'author_name', 'pagename', 'page_id', 'error', 'attachment', 'attachment_id', 'subpost', 'subpost_id', 'preview', 'robots', 'favicon', 'taxonomy', 'term', 'cpage', 'post_type', 'embed' );
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/**
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* Private query variables.
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*
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* Long list of private query variables.
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*
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* @since 2.0.0
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* @var string[]
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*/
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public $private_query_vars = array( 'offset', 'posts_per_page', 'posts_per_archive_page', 'showposts', 'nopaging', 'post_type', 'post_status', 'category__in', 'category__not_in', 'category__and', 'tag__in', 'tag__not_in', 'tag__and', 'tag_slug__in', 'tag_slug__and', 'tag_id', 'post_mime_type', 'perm', 'comments_per_page', 'post__in', 'post__not_in', 'post_parent', 'post_parent__in', 'post_parent__not_in', 'title', 'fields' );
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/**
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* Extra query variables set by the user.
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*
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* @since 2.1.0
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* @var array
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*/
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public $extra_query_vars = array();
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/**
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* Query variables for setting up the WordPress Query Loop.
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*
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* @since 2.0.0
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* @var array
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*/
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public $query_vars;
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/**
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* String parsed to set the query variables.
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*
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* @since 2.0.0
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* @var string
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*/
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public $query_string;
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/**
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* The request path, e.g. 2015/05/06.
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*
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* @since 2.0.0
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* @var string
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*/
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public $request;
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/**
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* Rewrite rule the request matched.
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*
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* @since 2.0.0
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* @var string
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*/
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public $matched_rule;
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/**
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* Rewrite query the request matched.
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*
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* @since 2.0.0
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* @var string
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*/
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public $matched_query;
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/**
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* Whether already did the permalink.
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*
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* @since 2.0.0
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* @var bool
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*/
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public $did_permalink = false;
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/**
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* Add name to list of public query variables.
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*
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* @since 2.1.0
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*
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* @param string $qv Query variable name.
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*/
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public function add_query_var( $qv ) {
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if ( ! in_array( $qv, $this->public_query_vars ) ) {
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$this->public_query_vars[] = $qv;
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}
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}
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/**
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* Removes a query variable from a list of public query variables.
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*
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* @since 4.5.0
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*
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* @param string $name Query variable name.
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*/
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public function remove_query_var( $name ) {
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$this->public_query_vars = array_diff( $this->public_query_vars, array( $name ) );
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}
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/**
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* Set the value of a query variable.
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*
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* @since 2.3.0
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*
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* @param string $key Query variable name.
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* @param mixed $value Query variable value.
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*/
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public function set_query_var( $key, $value ) {
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$this->query_vars[ $key ] = $value;
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}
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/**
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* Parse request to find correct WordPress query.
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*
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* Sets up the query variables based on the request. There are also many
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* filters and actions that can be used to further manipulate the result.
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*
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* @since 2.0.0
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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 array|string $extra_query_vars Set the extra query variables.
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*/
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public function parse_request( $extra_query_vars = '' ) {
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global $wp_rewrite;
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/**
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* Filters whether to parse the request.
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*
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* @since 3.5.0
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*
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* @param bool $bool Whether or not to parse the request. Default true.
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* @param WP $this Current WordPress environment instance.
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* @param array|string $extra_query_vars Extra passed query variables.
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*/
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if ( ! apply_filters( 'do_parse_request', true, $this, $extra_query_vars ) ) {
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return;
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}
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$this->query_vars = array();
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$post_type_query_vars = array();
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if ( is_array( $extra_query_vars ) ) {
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$this->extra_query_vars = & $extra_query_vars;
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} elseif ( ! empty( $extra_query_vars ) ) {
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parse_str( $extra_query_vars, $this->extra_query_vars );
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}
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// Process PATH_INFO, REQUEST_URI, and 404 for permalinks.
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// Fetch the rewrite rules.
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$rewrite = $wp_rewrite->wp_rewrite_rules();
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if ( ! empty( $rewrite ) ) {
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// If we match a rewrite rule, this will be cleared.
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$error = '404';
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$this->did_permalink = true;
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$pathinfo = isset( $_SERVER['PATH_INFO'] ) ? $_SERVER['PATH_INFO'] : '';
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list( $pathinfo ) = explode( '?', $pathinfo );
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$pathinfo = str_replace( '%', '%25', $pathinfo );
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list( $req_uri ) = explode( '?', $_SERVER['REQUEST_URI'] );
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$self = $_SERVER['PHP_SELF'];
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$home_path = trim( parse_url( home_url(), PHP_URL_PATH ), '/' );
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$home_path_regex = sprintf( '|^%s|i', preg_quote( $home_path, '|' ) );
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// Trim path info from the end and the leading home path from the
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// front. For path info requests, this leaves us with the requesting
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// filename, if any. For 404 requests, this leaves us with the
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// requested permalink.
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$req_uri = str_replace( $pathinfo, '', $req_uri );
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$req_uri = trim( $req_uri, '/' );
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$req_uri = preg_replace( $home_path_regex, '', $req_uri );
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$req_uri = trim( $req_uri, '/' );
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$pathinfo = trim( $pathinfo, '/' );
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$pathinfo = preg_replace( $home_path_regex, '', $pathinfo );
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$pathinfo = trim( $pathinfo, '/' );
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$self = trim( $self, '/' );
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$self = preg_replace( $home_path_regex, '', $self );
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$self = trim( $self, '/' );
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// The requested permalink is in $pathinfo for path info requests and
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// $req_uri for other requests.
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if ( ! empty( $pathinfo ) && ! preg_match( '|^.*' . $wp_rewrite->index . '$|', $pathinfo ) ) {
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$requested_path = $pathinfo;
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} else {
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// If the request uri is the index, blank it out so that we don't try to match it against a rule.
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if ( $req_uri == $wp_rewrite->index ) {
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$req_uri = '';
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}
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$requested_path = $req_uri;
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}
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$requested_file = $req_uri;
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$this->request = $requested_path;
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// Look for matches.
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$request_match = $requested_path;
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if ( empty( $request_match ) ) {
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// An empty request could only match against ^$ regex
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if ( isset( $rewrite['$'] ) ) {
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$this->matched_rule = '$';
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$query = $rewrite['$'];
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$matches = array( '' );
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}
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} else {
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foreach ( (array) $rewrite as $match => $query ) {
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// If the requested file is the anchor of the match, prepend it to the path info.
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if ( ! empty( $requested_file ) && strpos( $match, $requested_file ) === 0 && $requested_file != $requested_path ) {
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$request_match = $requested_file . '/' . $requested_path;
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}
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if ( preg_match( "#^$match#", $request_match, $matches ) ||
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preg_match( "#^$match#", urldecode( $request_match ), $matches ) ) {
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if ( $wp_rewrite->use_verbose_page_rules && preg_match( '/pagename=\$matches\[([0-9]+)\]/', $query, $varmatch ) ) {
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// This is a verbose page match, let's check to be sure about it.
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$page = get_page_by_path( $matches[ $varmatch[1] ] );
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if ( ! $page ) {
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continue;
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}
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$post_status_obj = get_post_status_object( $page->post_status );
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if ( ! $post_status_obj->public && ! $post_status_obj->protected
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&& ! $post_status_obj->private && $post_status_obj->exclude_from_search ) {
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continue;
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}
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}
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// Got a match.
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$this->matched_rule = $match;
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break;
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}
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}
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}
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if ( isset( $this->matched_rule ) ) {
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// Trim the query of everything up to the '?'.
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$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, $matches ) );
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$this->matched_query = $query;
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// Parse the query.
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parse_str( $query, $perma_query_vars );
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// If we're processing a 404 request, clear the error var since we found something.
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if ( '404' == $error ) {
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unset( $error, $_GET['error'] );
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}
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}
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// If req_uri is empty or if it is a request for ourself, unset error.
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if ( empty( $requested_path ) || $requested_file == $self || strpos( $_SERVER['PHP_SELF'], 'wp-admin/' ) !== false ) {
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unset( $error, $_GET['error'] );
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if ( isset( $perma_query_vars ) && strpos( $_SERVER['PHP_SELF'], 'wp-admin/' ) !== false ) {
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unset( $perma_query_vars );
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}
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$this->did_permalink = false;
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}
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}
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/**
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* Filters the query variables whitelist before processing.
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*
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* Allows (publicly allowed) query vars to be added, removed, or changed prior
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* to executing the query. Needed to allow custom rewrite rules using your own arguments
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* to work, or any other custom query variables you want to be publicly available.
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*
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* @since 1.5.0
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*
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* @param string[] $public_query_vars The array of whitelisted query variable names.
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*/
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$this->public_query_vars = apply_filters( 'query_vars', $this->public_query_vars );
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foreach ( get_post_types( array(), 'objects' ) as $post_type => $t ) {
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if ( is_post_type_viewable( $t ) && $t->query_var ) {
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$post_type_query_vars[ $t->query_var ] = $post_type;
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}
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}
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foreach ( $this->public_query_vars as $wpvar ) {
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if ( isset( $this->extra_query_vars[ $wpvar ] ) ) {
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$this->query_vars[ $wpvar ] = $this->extra_query_vars[ $wpvar ];
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} elseif ( isset( $_GET[ $wpvar ] ) && isset( $_POST[ $wpvar ] ) && $_GET[ $wpvar ] !== $_POST[ $wpvar ] ) {
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wp_die( __( 'A variable mismatch has been detected.' ), __( 'Sorry, you are not allowed to view this item.' ), 400 );
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} elseif ( isset( $_POST[ $wpvar ] ) ) {
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$this->query_vars[ $wpvar ] = $_POST[ $wpvar ];
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} elseif ( isset( $_GET[ $wpvar ] ) ) {
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$this->query_vars[ $wpvar ] = $_GET[ $wpvar ];
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} elseif ( isset( $perma_query_vars[ $wpvar ] ) ) {
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$this->query_vars[ $wpvar ] = $perma_query_vars[ $wpvar ];
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}
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if ( ! empty( $this->query_vars[ $wpvar ] ) ) {
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if ( ! is_array( $this->query_vars[ $wpvar ] ) ) {
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$this->query_vars[ $wpvar ] = (string) $this->query_vars[ $wpvar ];
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} else {
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foreach ( $this->query_vars[ $wpvar ] as $vkey => $v ) {
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if ( is_scalar( $v ) ) {
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$this->query_vars[ $wpvar ][ $vkey ] = (string) $v;
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}
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}
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}
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if ( isset( $post_type_query_vars[ $wpvar ] ) ) {
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$this->query_vars['post_type'] = $post_type_query_vars[ $wpvar ];
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$this->query_vars['name'] = $this->query_vars[ $wpvar ];
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}
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}
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}
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// Convert urldecoded spaces back into +
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foreach ( get_taxonomies( array(), 'objects' ) as $taxonomy => $t ) {
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if ( $t->query_var && isset( $this->query_vars[ $t->query_var ] ) ) {
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$this->query_vars[ $t->query_var ] = str_replace( ' ', '+', $this->query_vars[ $t->query_var ] );
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}
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}
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// Don't allow non-publicly queryable taxonomies to be queried from the front end.
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if ( ! is_admin() ) {
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foreach ( get_taxonomies( array( 'publicly_queryable' => false ), 'objects' ) as $taxonomy => $t ) {
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/*
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* Disallow when set to the 'taxonomy' query var.
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* Non-publicly queryable taxonomies cannot register custom query vars. See register_taxonomy().
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*/
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if ( isset( $this->query_vars['taxonomy'] ) && $taxonomy === $this->query_vars['taxonomy'] ) {
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unset( $this->query_vars['taxonomy'], $this->query_vars['term'] );
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}
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}
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}
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// Limit publicly queried post_types to those that are publicly_queryable
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if ( isset( $this->query_vars['post_type'] ) ) {
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$queryable_post_types = get_post_types( array( 'publicly_queryable' => true ) );
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if ( ! is_array( $this->query_vars['post_type'] ) ) {
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if ( ! in_array( $this->query_vars['post_type'], $queryable_post_types ) ) {
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unset( $this->query_vars['post_type'] );
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}
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} else {
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$this->query_vars['post_type'] = array_intersect( $this->query_vars['post_type'], $queryable_post_types );
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}
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}
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// Resolve conflicts between posts with numeric slugs and date archive queries.
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$this->query_vars = wp_resolve_numeric_slug_conflicts( $this->query_vars );
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foreach ( (array) $this->private_query_vars as $var ) {
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if ( isset( $this->extra_query_vars[ $var ] ) ) {
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$this->query_vars[ $var ] = $this->extra_query_vars[ $var ];
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}
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}
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if ( isset( $error ) ) {
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$this->query_vars['error'] = $error;
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}
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/**
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* Filters the array of parsed query variables.
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*
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* @since 2.1.0
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*
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* @param array $query_vars The array of requested query variables.
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*/
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$this->query_vars = apply_filters( 'request', $this->query_vars );
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/**
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* Fires once all query variables for the current request have been parsed.
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*
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* @since 2.1.0
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*
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* @param WP $this Current WordPress environment instance (passed by reference).
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*/
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do_action_ref_array( 'parse_request', array( &$this ) );
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}
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/**
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* Sends additional HTTP headers for caching, content type, etc.
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*
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* Sets the Content-Type header. Sets the 'error' status (if passed) and optionally exits.
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* If showing a feed, it will also send Last-Modified, ETag, and 304 status if needed.
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*
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* @since 2.0.0
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* @since 4.4.0 `X-Pingback` header is added conditionally after posts have been queried in handle_404().
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*/
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public function send_headers() {
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$headers = array();
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$status = null;
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$exit_required = false;
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if ( is_user_logged_in() ) {
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$headers = array_merge( $headers, wp_get_nocache_headers() );
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}
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if ( ! empty( $this->query_vars['error'] ) ) {
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$status = (int) $this->query_vars['error'];
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if ( 404 === $status ) {
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if ( ! is_user_logged_in() ) {
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$headers = array_merge( $headers, wp_get_nocache_headers() );
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}
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$headers['Content-Type'] = get_option( 'html_type' ) . '; charset=' . get_option( 'blog_charset' );
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} elseif ( in_array( $status, array( 403, 500, 502, 503 ) ) ) {
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$exit_required = true;
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}
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} elseif ( empty( $this->query_vars['feed'] ) ) {
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$headers['Content-Type'] = get_option( 'html_type' ) . '; charset=' . get_option( 'blog_charset' );
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} else {
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// Set the correct content type for feeds
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$type = $this->query_vars['feed'];
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if ( 'feed' == $this->query_vars['feed'] ) {
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$type = get_default_feed();
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}
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$headers['Content-Type'] = feed_content_type( $type ) . '; charset=' . get_option( 'blog_charset' );
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// We're showing a feed, so WP is indeed the only thing that last changed.
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if ( ! empty( $this->query_vars['withcomments'] )
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|| false !== strpos( $this->query_vars['feed'], 'comments-' )
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|| ( empty( $this->query_vars['withoutcomments'] )
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&& ( ! empty( $this->query_vars['p'] )
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|| ! empty( $this->query_vars['name'] )
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|| ! empty( $this->query_vars['page_id'] )
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|| ! empty( $this->query_vars['pagename'] )
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|| ! empty( $this->query_vars['attachment'] )
|
|
|| ! empty( $this->query_vars['attachment_id'] )
|
|
)
|
|
)
|
|
) {
|
|
$wp_last_modified = mysql2date( 'D, d M Y H:i:s', get_lastcommentmodified( 'GMT' ), false );
|
|
} else {
|
|
$wp_last_modified = mysql2date( 'D, d M Y H:i:s', get_lastpostmodified( 'GMT' ), false );
|
|
}
|
|
|
|
if ( ! $wp_last_modified ) {
|
|
$wp_last_modified = gmdate( 'D, d M Y H:i:s' );
|
|
}
|
|
|
|
$wp_last_modified .= ' GMT';
|
|
|
|
$wp_etag = '"' . md5( $wp_last_modified ) . '"';
|
|
$headers['Last-Modified'] = $wp_last_modified;
|
|
$headers['ETag'] = $wp_etag;
|
|
|
|
// Support for Conditional GET
|
|
if ( isset( $_SERVER['HTTP_IF_NONE_MATCH'] ) ) {
|
|
$client_etag = wp_unslash( $_SERVER['HTTP_IF_NONE_MATCH'] );
|
|
} else {
|
|
$client_etag = false;
|
|
}
|
|
|
|
$client_last_modified = empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ? '' : trim( $_SERVER['HTTP_IF_MODIFIED_SINCE'] );
|
|
// If string is empty, return 0. If not, attempt to parse into a timestamp
|
|
$client_modified_timestamp = $client_last_modified ? strtotime( $client_last_modified ) : 0;
|
|
|
|
// Make a timestamp for our most recent modification...
|
|
$wp_modified_timestamp = strtotime( $wp_last_modified );
|
|
|
|
if ( ( $client_last_modified && $client_etag ) ?
|
|
( ( $client_modified_timestamp >= $wp_modified_timestamp ) && ( $client_etag == $wp_etag ) ) :
|
|
( ( $client_modified_timestamp >= $wp_modified_timestamp ) || ( $client_etag == $wp_etag ) ) ) {
|
|
$status = 304;
|
|
$exit_required = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Filters the HTTP headers before they're sent to the browser.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param string[] $headers Associative array of headers to be sent.
|
|
* @param WP $this Current WordPress environment instance.
|
|
*/
|
|
$headers = apply_filters( 'wp_headers', $headers, $this );
|
|
|
|
if ( ! empty( $status ) ) {
|
|
status_header( $status );
|
|
}
|
|
|
|
// If Last-Modified is set to false, it should not be sent (no-cache situation).
|
|
if ( isset( $headers['Last-Modified'] ) && false === $headers['Last-Modified'] ) {
|
|
unset( $headers['Last-Modified'] );
|
|
|
|
if ( ! headers_sent() ) {
|
|
header_remove( 'Last-Modified' );
|
|
}
|
|
}
|
|
|
|
if ( ! headers_sent() ) {
|
|
foreach ( (array) $headers as $name => $field_value ) {
|
|
header( "{$name}: {$field_value}" );
|
|
}
|
|
}
|
|
|
|
if ( $exit_required ) {
|
|
exit();
|
|
}
|
|
|
|
/**
|
|
* Fires once the requested HTTP headers for caching, content type, etc. have been sent.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param WP $this Current WordPress environment instance (passed by reference).
|
|
*/
|
|
do_action_ref_array( 'send_headers', array( &$this ) );
|
|
}
|
|
|
|
/**
|
|
* Sets the query string property based off of the query variable property.
|
|
*
|
|
* The {@see 'query_string'} filter is deprecated, but still works. Plugins should
|
|
* use the {@see 'request'} filter instead.
|
|
*
|
|
* @since 2.0.0
|
|
*/
|
|
public function build_query_string() {
|
|
$this->query_string = '';
|
|
foreach ( (array) array_keys( $this->query_vars ) as $wpvar ) {
|
|
if ( '' != $this->query_vars[ $wpvar ] ) {
|
|
$this->query_string .= ( strlen( $this->query_string ) < 1 ) ? '' : '&';
|
|
if ( ! is_scalar( $this->query_vars[ $wpvar ] ) ) { // Discard non-scalars.
|
|
continue;
|
|
}
|
|
$this->query_string .= $wpvar . '=' . rawurlencode( $this->query_vars[ $wpvar ] );
|
|
}
|
|
}
|
|
|
|
if ( has_filter( 'query_string' ) ) { // Don't bother filtering and parsing if no plugins are hooked in.
|
|
/**
|
|
* Filters the query string before parsing.
|
|
*
|
|
* @since 1.5.0
|
|
* @deprecated 2.1.0 Use {@see 'query_vars'} or {@see 'request'} filters instead.
|
|
*
|
|
* @param string $query_string The query string to modify.
|
|
*/
|
|
$this->query_string = apply_filters_deprecated(
|
|
'query_string',
|
|
array( $this->query_string ),
|
|
'2.1.0',
|
|
'query_vars, request'
|
|
);
|
|
parse_str( $this->query_string, $this->query_vars );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set up the WordPress Globals.
|
|
*
|
|
* The query_vars property will be extracted to the GLOBALS. So care should
|
|
* be taken when naming global variables that might interfere with the
|
|
* WordPress environment.
|
|
*
|
|
* @since 2.0.0
|
|
*
|
|
* @global WP_Query $wp_query WordPress Query object.
|
|
* @global string $query_string Query string for the loop.
|
|
* @global array $posts The found posts.
|
|
* @global WP_Post|null $post The current post, if available.
|
|
* @global string $request The SQL statement for the request.
|
|
* @global int $more Only set, if single page or post.
|
|
* @global int $single If single page or post. Only set, if single page or post.
|
|
* @global WP_User $authordata Only set, if author archive.
|
|
*/
|
|
public function register_globals() {
|
|
global $wp_query;
|
|
|
|
// Extract updated query vars back into global namespace.
|
|
foreach ( (array) $wp_query->query_vars as $key => $value ) {
|
|
$GLOBALS[ $key ] = $value;
|
|
}
|
|
|
|
$GLOBALS['query_string'] = $this->query_string;
|
|
$GLOBALS['posts'] = & $wp_query->posts;
|
|
$GLOBALS['post'] = isset( $wp_query->post ) ? $wp_query->post : null;
|
|
$GLOBALS['request'] = $wp_query->request;
|
|
|
|
if ( $wp_query->is_single() || $wp_query->is_page() ) {
|
|
$GLOBALS['more'] = 1;
|
|
$GLOBALS['single'] = 1;
|
|
}
|
|
|
|
if ( $wp_query->is_author() && isset( $wp_query->post ) ) {
|
|
$GLOBALS['authordata'] = get_userdata( $wp_query->post->post_author );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set up the current user.
|
|
*
|
|
* @since 2.0.0
|
|
*/
|
|
public function init() {
|
|
wp_get_current_user();
|
|
}
|
|
|
|
/**
|
|
* Set up the Loop based on the query variables.
|
|
*
|
|
* @since 2.0.0
|
|
*
|
|
* @global WP_Query $wp_the_query WordPress Query object.
|
|
*/
|
|
public function query_posts() {
|
|
global $wp_the_query;
|
|
$this->build_query_string();
|
|
$wp_the_query->query( $this->query_vars );
|
|
}
|
|
|
|
/**
|
|
* Set the Headers for 404, if nothing is found for requested URL.
|
|
*
|
|
* Issue a 404 if a request doesn't match any posts and doesn't match
|
|
* any object (e.g. an existing-but-empty category, tag, author) and a 404 was not already
|
|
* issued, and if the request was not a search or the homepage.
|
|
*
|
|
* Otherwise, issue a 200.
|
|
*
|
|
* This sets headers after posts have been queried. handle_404() really means "handle status."
|
|
* By inspecting the result of querying posts, seemingly successful requests can be switched to
|
|
* a 404 so that canonical redirection logic can kick in.
|
|
*
|
|
* @since 2.0.0
|
|
*
|
|
* @global WP_Query $wp_query WordPress Query object.
|
|
*/
|
|
public function handle_404() {
|
|
global $wp_query;
|
|
|
|
/**
|
|
* Filters whether to short-circuit default header status handling.
|
|
*
|
|
* Returning a non-false value from the filter will short-circuit the handling
|
|
* and return early.
|
|
*
|
|
* @since 4.5.0
|
|
*
|
|
* @param bool $preempt Whether to short-circuit default header status handling. Default false.
|
|
* @param WP_Query $wp_query WordPress Query object.
|
|
*/
|
|
if ( false !== apply_filters( 'pre_handle_404', false, $wp_query ) ) {
|
|
return;
|
|
}
|
|
|
|
// If we've already issued a 404, bail.
|
|
if ( is_404() ) {
|
|
return;
|
|
}
|
|
|
|
// Never 404 for the admin, robots, favicon, or if we found posts.
|
|
if ( is_admin() || is_robots() || is_favicon() || $wp_query->posts ) {
|
|
|
|
$success = true;
|
|
if ( is_singular() ) {
|
|
$p = false;
|
|
|
|
if ( $wp_query->post instanceof WP_Post ) {
|
|
$p = clone $wp_query->post;
|
|
}
|
|
|
|
// Only set X-Pingback for single posts that allow pings.
|
|
if ( $p && pings_open( $p ) && ! headers_sent() ) {
|
|
header( 'X-Pingback: ' . get_bloginfo( 'pingback_url', 'display' ) );
|
|
}
|
|
|
|
// check for paged content that exceeds the max number of pages
|
|
$next = '<!--nextpage-->';
|
|
if ( $p && false !== strpos( $p->post_content, $next ) && ! empty( $this->query_vars['page'] ) ) {
|
|
$page = trim( $this->query_vars['page'], '/' );
|
|
$success = (int) $page <= ( substr_count( $p->post_content, $next ) + 1 );
|
|
}
|
|
}
|
|
|
|
if ( $success ) {
|
|
status_header( 200 );
|
|
return;
|
|
}
|
|
}
|
|
|
|
// We will 404 for paged queries, as no posts were found.
|
|
if ( ! is_paged() ) {
|
|
|
|
// Don't 404 for authors without posts as long as they matched an author on this site.
|
|
$author = get_query_var( 'author' );
|
|
if ( is_author() && is_numeric( $author ) && $author > 0 && is_user_member_of_blog( $author ) ) {
|
|
status_header( 200 );
|
|
return;
|
|
}
|
|
|
|
// Don't 404 for these queries if they matched an object.
|
|
if ( ( is_tag() || is_category() || is_tax() || is_post_type_archive() ) && get_queried_object() ) {
|
|
status_header( 200 );
|
|
return;
|
|
}
|
|
|
|
// Don't 404 for these queries either.
|
|
if ( is_home() || is_search() || is_feed() ) {
|
|
status_header( 200 );
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Guess it's time to 404.
|
|
$wp_query->set_404();
|
|
status_header( 404 );
|
|
nocache_headers();
|
|
}
|
|
|
|
/**
|
|
* Sets up all of the variables required by the WordPress environment.
|
|
*
|
|
* The action {@see 'wp'} has one parameter that references the WP object. It
|
|
* allows for accessing the properties and methods to further manipulate the
|
|
* object.
|
|
*
|
|
* @since 2.0.0
|
|
*
|
|
* @param string|array $query_args Passed to parse_request().
|
|
*/
|
|
public function main( $query_args = '' ) {
|
|
$this->init();
|
|
$this->parse_request( $query_args );
|
|
$this->send_headers();
|
|
$this->query_posts();
|
|
$this->handle_404();
|
|
$this->register_globals();
|
|
|
|
/**
|
|
* Fires once the WordPress environment has been set up.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param WP $this Current WordPress environment instance (passed by reference).
|
|
*/
|
|
do_action_ref_array( 'wp', array( &$this ) );
|
|
}
|
|
}
|