645 lines
19 KiB
PHP
645 lines
19 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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* @access public
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* @var array
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*/
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var $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', 'static', 'pagename', 'page_id', 'error', 'comments_popup', 'attachment', 'attachment_id', 'subpost', 'subpost_id', 'preview', 'robots', 'taxonomy', 'term', 'cpage', 'post_type');
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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 array
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*/
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var $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__in', 'post_parent__not_in' );
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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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var $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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var $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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var $query_string;
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/**
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* Permalink or requested URI.
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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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var $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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var $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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var $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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var $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 $qv Query variable name.
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*/
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function add_query_var($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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* 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 $value Query variable value.
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*/
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function set_query_var($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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* @param array|string $extra_query_vars Set the extra query variables.
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*/
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function parse_request($extra_query_vars = '') {
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global $wp_rewrite;
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if ( ! apply_filters( 'do_parse_request', true, $this, $extra_query_vars ) )
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return;
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$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 = & $extra_query_vars;
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else if (! empty($extra_query_vars))
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parse_str($extra_query_vars, $this->extra_query_vars);
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// Process PATH_INFO, REQUEST_URI, and 404 for permalinks.
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// Fetch the rewrite rules.
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$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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// 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|i", '', $req_uri);
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$req_uri = trim($req_uri, '/');
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$pathinfo = trim($pathinfo, '/');
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$pathinfo = preg_replace("|^$home_path|i", '', $pathinfo);
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$pathinfo = trim($pathinfo, '/');
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$self = trim($self, '/');
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$self = preg_replace("|^$home_path|i", '', $self);
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$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('|^.*' . $wp_rewrite->index . '$|', $pathinfo) ) {
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$request = $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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$request = $req_uri;
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}
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$this->request = $request;
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// Look for matches.
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$request_match = $request;
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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 => $query ) {
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// If the requesting file is the anchor of the match, prepend it to the path info.
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if ( ! empty($req_uri) && strpos($match, $req_uri) === 0 && $req_uri != $request )
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$request_match = $req_uri . '/' . $request;
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if ( preg_match("#^$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, lets check to be sure about it
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if ( ! get_page_by_path( $matches[ $varmatch[1] ] ) )
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continue;
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}
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// Got a match.
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$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, $_GET['error'] );
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}
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// If req_uri is empty or if it is a request for ourself, unset error.
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if ( empty($request) || $req_uri == $self || strpos($_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( $perma_query_vars );
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$this->did_permalink = false;
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}
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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 ( $GLOBALS['wp_post_types'] as $post_type => $t )
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if ( $t->query_var )
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$post_type_query_vars[$t->query_var] = $post_type;
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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( $_POST[$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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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_object( $v ) ) {
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$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 ( $GLOBALS['wp_taxonomies'] 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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// 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( $this->query_vars['post_type'] );
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} else {
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$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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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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if ( isset($error) )
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$this->query_vars['error'] = $error;
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$this->query_vars = apply_filters('request', $this->query_vars);
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do_action_ref_array('parse_request', array(&$this));
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}
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/**
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* Send additional HTTP headers for caching, content type, etc.
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*
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* Sets the X-Pingback header, 404 status (if 404), Content-type. If showing
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* 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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*/
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function send_headers() {
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$headers = array('X-Pingback' => get_bloginfo('pingback_url'));
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$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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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($headers, wp_get_nocache_headers());
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$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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} else if ( 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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// We're showing a feed, so WP is indeed the only thing that last changed
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if ( !empty($this->query_vars['withcomments'])
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|| ( empty($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($this->query_vars['attachment'])
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|| !empty($this->query_vars['attachment_id'])
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)
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)
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)
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$wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastcommentmodified('GMT'), 0).' GMT';
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else
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$wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastpostmodified('GMT'), 0).' GMT';
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$wp_etag = '"' . md5($wp_last_modified) . '"';
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$headers['Last-Modified'] = $wp_last_modified;
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$headers['ETag'] = $wp_etag;
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// Support for Conditional GET
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if (isset($_SERVER['HTTP_IF_NONE_MATCH']))
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$client_etag = wp_unslash( $_SERVER['HTTP_IF_NONE_MATCH'] );
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else $client_etag = false;
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$client_last_modified = empty($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? '' : trim($_SERVER['HTTP_IF_MODIFIED_SINCE']);
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// If string is empty, return 0. If not, attempt to parse into a timestamp
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$client_modified_timestamp = $client_last_modified ? strtotime($client_last_modified) : 0;
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// Make a timestamp for our most recent modification...
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$wp_modified_timestamp = strtotime($wp_last_modified);
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if ( ($client_last_modified && $client_etag) ?
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(($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) :
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(($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
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$status = 304;
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$exit_required = true;
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}
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}
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$headers = apply_filters('wp_headers', $headers, $this);
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if ( ! empty( $status ) )
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status_header( $status );
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// If Last-Modified is set to false, it should not be sent (no-cache situation).
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if ( isset( $headers['Last-Modified'] ) && false === $headers['Last-Modified'] ) {
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unset( $headers['Last-Modified'] );
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// In PHP 5.3+, make sure we are not sending a Last-Modified header.
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if ( function_exists( 'header_remove' ) ) {
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@header_remove( 'Last-Modified' );
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} else {
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// In PHP 5.2, send an empty Last-Modified header, but only as a
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// last resort to override a header already sent. #WP23021
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foreach ( headers_list() as $header ) {
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if ( 0 === stripos( $header, 'Last-Modified' ) ) {
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$headers['Last-Modified'] = '';
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break;
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}
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}
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}
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}
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foreach( (array) $headers as $name => $field_value )
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@header("{$name}: {$field_value}");
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if ( $exit_required )
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exit();
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do_action_ref_array('send_headers', array(&$this));
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}
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/**
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* Sets the query string property based off of the query variable property.
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*
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* The 'query_string' filter is deprecated, but still works. Plugins should
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* use the 'request' filter instead.
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*
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* @since 2.0.0
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*/
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function build_query_string() {
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$this->query_string = '';
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foreach ( (array) array_keys($this->query_vars) as $wpvar) {
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if ( '' != $this->query_vars[$wpvar] ) {
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$this->query_string .= (strlen($this->query_string) < 1) ? '' : '&';
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if ( !is_scalar($this->query_vars[$wpvar]) ) // Discard non-scalars.
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continue;
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$this->query_string .= $wpvar . '=' . rawurlencode($this->query_vars[$wpvar]);
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}
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}
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// query_string filter deprecated. Use request filter instead.
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if ( has_filter('query_string') ) { // Don't bother filtering and parsing if no plugins are hooked in.
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$this->query_string = apply_filters('query_string', $this->query_string);
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parse_str($this->query_string, $this->query_vars);
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}
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}
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/**
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* Set up the WordPress Globals.
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*
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* The query_vars property will be extracted to the GLOBALS. So care should
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* be taken when naming global variables that might interfere with the
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* WordPress environment.
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*
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* @global string $query_string Query string for the loop.
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* @global array $posts The found posts.
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* @global WP_Post|null $post The current post, if available.
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* @global string $request The SQL statement for the request.
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* @global int $more Only set, if single page or post.
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* @global int $single If single page or post. Only set, if single page or post.
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* @global WP_User $authordata Only set, if author archive.
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*
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* @since 2.0.0
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*/
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function register_globals() {
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global $wp_query;
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// Extract updated query vars back into global namespace.
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foreach ( (array) $wp_query->query_vars as $key => $value ) {
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$GLOBALS[ $key ] = $value;
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}
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$GLOBALS['query_string'] = $this->query_string;
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$GLOBALS['posts'] = & $wp_query->posts;
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$GLOBALS['post'] = isset( $wp_query->post ) ? $wp_query->post : null;
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$GLOBALS['request'] = $wp_query->request;
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if ( $wp_query->is_single() || $wp_query->is_page() ) {
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$GLOBALS['more'] = 1;
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$GLOBALS['single'] = 1;
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}
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if ( $wp_query->is_author() && isset( $wp_query->post ) )
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$GLOBALS['authordata'] = get_userdata( $wp_query->post->post_author );
|
|
}
|
|
|
|
/**
|
|
* Set up the current user.
|
|
*
|
|
* @since 2.0.0
|
|
*/
|
|
function init() {
|
|
wp_get_current_user();
|
|
}
|
|
|
|
/**
|
|
* Set up the Loop based on the query variables.
|
|
*
|
|
* @uses WP::$query_vars
|
|
* @since 2.0.0
|
|
*/
|
|
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.
|
|
*
|
|
* @since 2.0.0
|
|
*/
|
|
function handle_404() {
|
|
global $wp_query;
|
|
|
|
// If we've already issued a 404, bail.
|
|
if ( is_404() )
|
|
return;
|
|
|
|
// Never 404 for the admin, robots, or if we found posts.
|
|
if ( is_admin() || is_robots() || $wp_query->posts ) {
|
|
status_header( 200 );
|
|
return;
|
|
}
|
|
|
|
// We will 404 for paged queries, as no posts were found.
|
|
if ( ! is_paged() ) {
|
|
|
|
// Don't 404 for these queries if they matched an object.
|
|
if ( ( is_tag() || is_category() || is_tax() || is_author() || is_post_type_archive() ) && $wp_query->get_queried_object() ) {
|
|
status_header( 200 );
|
|
return;
|
|
}
|
|
|
|
// Don't 404 for these queries either.
|
|
if ( is_home() || is_search() ) {
|
|
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 '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 $query_args Passed to {@link parse_request()}
|
|
*/
|
|
function main($query_args = '') {
|
|
$this->init();
|
|
$this->parse_request($query_args);
|
|
$this->send_headers();
|
|
$this->query_posts();
|
|
$this->handle_404();
|
|
$this->register_globals();
|
|
do_action_ref_array('wp', array(&$this));
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Helper class to remove the need to use eval to replace $matches[] in query strings.
|
|
*
|
|
* @since 2.9.0
|
|
*/
|
|
class WP_MatchesMapRegex {
|
|
/**
|
|
* store for matches
|
|
*
|
|
* @access private
|
|
* @var array
|
|
*/
|
|
var $_matches;
|
|
|
|
/**
|
|
* store for mapping result
|
|
*
|
|
* @access public
|
|
* @var string
|
|
*/
|
|
var $output;
|
|
|
|
/**
|
|
* subject to perform mapping on (query string containing $matches[] references
|
|
*
|
|
* @access private
|
|
* @var string
|
|
*/
|
|
var $_subject;
|
|
|
|
/**
|
|
* regexp pattern to match $matches[] references
|
|
*
|
|
* @var string
|
|
*/
|
|
var $_pattern = '(\$matches\[[1-9]+[0-9]*\])'; // magic number
|
|
|
|
/**
|
|
* constructor
|
|
*
|
|
* @param string $subject subject if regex
|
|
* @param array $matches data to use in map
|
|
* @return self
|
|
*/
|
|
function WP_MatchesMapRegex($subject, $matches) {
|
|
$this->_subject = $subject;
|
|
$this->_matches = $matches;
|
|
$this->output = $this->_map();
|
|
}
|
|
|
|
/**
|
|
* Substitute substring matches in subject.
|
|
*
|
|
* static helper function to ease use
|
|
*
|
|
* @access public
|
|
* @param string $subject subject
|
|
* @param array $matches data used for substitution
|
|
* @return string
|
|
*/
|
|
public static function apply($subject, $matches) {
|
|
$oSelf = new WP_MatchesMapRegex($subject, $matches);
|
|
return $oSelf->output;
|
|
}
|
|
|
|
/**
|
|
* do the actual mapping
|
|
*
|
|
* @access private
|
|
* @return string
|
|
*/
|
|
function _map() {
|
|
$callback = array($this, 'callback');
|
|
return preg_replace_callback($this->_pattern, $callback, $this->_subject);
|
|
}
|
|
|
|
/**
|
|
* preg_replace_callback hook
|
|
*
|
|
* @access public
|
|
* @param array $matches preg_replace regexp matches
|
|
* @return string
|
|
*/
|
|
function callback($matches) {
|
|
$index = intval(substr($matches[0], 9, -1));
|
|
return ( isset( $this->_matches[$index] ) ? urlencode($this->_matches[$index]) : '' );
|
|
}
|
|
|
|
}
|