<?php /** * WordPress environment setup class. * * @package WordPress * @since 2.0.0 */ class WP { /** * Public query variables. * * Long list of public query variables. * * @since 2.0.0 * @access public * @var array */ 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', 'static', 'pagename', 'page_id', 'error', 'comments_popup', 'attachment', 'attachment_id', 'subpost', 'subpost_id', 'preview', 'robots', 'taxonomy', 'term', 'cpage', 'post_type'); /** * Private query variables. * * Long list of private query variables. * * @since 2.0.0 * @var array */ 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' ); /** * Extra query variables set by the user. * * @since 2.1.0 * @var array */ public $extra_query_vars = array(); /** * Query variables for setting up the WordPress Query Loop. * * @since 2.0.0 * @var array */ public $query_vars; /** * String parsed to set the query variables. * * @since 2.0.0 * @var string */ public $query_string; /** * Permalink or requested URI. * * @since 2.0.0 * @var string */ public $request; /** * Rewrite rule the request matched. * * @since 2.0.0 * @var string */ public $matched_rule; /** * Rewrite query the request matched. * * @since 2.0.0 * @var string */ public $matched_query; /** * Whether already did the permalink. * * @since 2.0.0 * @var bool */ public $did_permalink = false; /** * Add name to list of public query variables. * * @since 2.1.0 * * @param string $qv Query variable name. */ public function add_query_var($qv) { if ( !in_array($qv, $this->public_query_vars) ) $this->public_query_vars[] = $qv; } /** * Set the value of a query variable. * * @since 2.3.0 * * @param string $key Query variable name. * @param mixed $value Query variable value. */ public function set_query_var($key, $value) { $this->query_vars[$key] = $value; } /** * Parse request to find correct WordPress query. * * Sets up the query variables based on the request. There are also many * filters and actions that can be used to further manipulate the result. * * @since 2.0.0 * * @global WP_Rewrite $wp_rewrite * * @param array|string $extra_query_vars Set the extra query variables. */ public function parse_request($extra_query_vars = '') { global $wp_rewrite; /** * Filter whether to parse the request. * * @since 3.5.0 * * @param bool $bool Whether or not to parse the request. Default true. * @param WP $this Current WordPress environment instance. * @param array|string $extra_query_vars Extra passed query variables. */ if ( ! apply_filters( 'do_parse_request', true, $this, $extra_query_vars ) ) return; $this->query_vars = array(); $post_type_query_vars = array(); if ( is_array( $extra_query_vars ) ) { $this->extra_query_vars = & $extra_query_vars; } elseif ( ! empty( $extra_query_vars ) ) { parse_str( $extra_query_vars, $this->extra_query_vars ); } // Process PATH_INFO, REQUEST_URI, and 404 for permalinks. // Fetch the rewrite rules. $rewrite = $wp_rewrite->wp_rewrite_rules(); if ( ! empty($rewrite) ) { // If we match a rewrite rule, this will be cleared. $error = '404'; $this->did_permalink = true; $pathinfo = isset( $_SERVER['PATH_INFO'] ) ? $_SERVER['PATH_INFO'] : ''; list( $pathinfo ) = explode( '?', $pathinfo ); $pathinfo = str_replace( "%", "%25", $pathinfo ); list( $req_uri ) = explode( '?', $_SERVER['REQUEST_URI'] ); $self = $_SERVER['PHP_SELF']; $home_path = trim( parse_url( home_url(), PHP_URL_PATH ), '/' ); $home_path_regex = sprintf( '|^%s|i', preg_quote( $home_path, '|' ) ); // Trim path info from the end and the leading home path from the // front. For path info requests, this leaves us with the requesting // filename, if any. For 404 requests, this leaves us with the // requested permalink. $req_uri = str_replace($pathinfo, '', $req_uri); $req_uri = trim($req_uri, '/'); $req_uri = preg_replace( $home_path_regex, '', $req_uri ); $req_uri = trim($req_uri, '/'); $pathinfo = trim($pathinfo, '/'); $pathinfo = preg_replace( $home_path_regex, '', $pathinfo ); $pathinfo = trim($pathinfo, '/'); $self = trim($self, '/'); $self = preg_replace( $home_path_regex, '', $self ); $self = trim($self, '/'); // The requested permalink is in $pathinfo for path info requests and // $req_uri for other requests. if ( ! empty($pathinfo) && !preg_match('|^.*' . $wp_rewrite->index . '$|', $pathinfo) ) { $request = $pathinfo; } else { // If the request uri is the index, blank it out so that we don't try to match it against a rule. if ( $req_uri == $wp_rewrite->index ) $req_uri = ''; $request = $req_uri; } $this->request = $request; // Look for matches. $request_match = $request; if ( empty( $request_match ) ) { // An empty request could only match against ^$ regex if ( isset( $rewrite['$'] ) ) { $this->matched_rule = '$'; $query = $rewrite['$']; $matches = array(''); } } else { foreach ( (array) $rewrite as $match => $query ) { // If the requesting file is the anchor of the match, prepend it to the path info. if ( ! empty($req_uri) && strpos($match, $req_uri) === 0 && $req_uri != $request ) $request_match = $req_uri . '/' . $request; if ( preg_match("#^$match#", $request_match, $matches) || preg_match("#^$match#", urldecode($request_match), $matches) ) { if ( $wp_rewrite->use_verbose_page_rules && preg_match( '/pagename=\$matches\[([0-9]+)\]/', $query, $varmatch ) ) { // This is a verbose page match, let's check to be sure about it. if ( ! get_page_by_path( $matches[ $varmatch[1] ] ) ) continue; } // Got a match. $this->matched_rule = $match; break; } } } if ( isset( $this->matched_rule ) ) { // Trim the query of everything up to the '?'. $query = preg_replace("!^.+\?!", '', $query); // Substitute the substring matches into the query. $query = addslashes(WP_MatchesMapRegex::apply($query, $matches)); $this->matched_query = $query; // Parse the query. parse_str($query, $perma_query_vars); // If we're processing a 404 request, clear the error var since we found something. if ( '404' == $error ) unset( $error, $_GET['error'] ); } // If req_uri is empty or if it is a request for ourself, unset error. if ( empty($request) || $req_uri == $self || strpos($_SERVER['PHP_SELF'], 'wp-admin/') !== false ) { unset( $error, $_GET['error'] ); if ( isset($perma_query_vars) && strpos($_SERVER['PHP_SELF'], 'wp-admin/') !== false ) unset( $perma_query_vars ); $this->did_permalink = false; } } /** * Filter the query variables whitelist before processing. * * Allows (publicly allowed) query vars to be added, removed, or changed prior * to executing the query. Needed to allow custom rewrite rules using your own arguments * to work, or any other custom query variables you want to be publicly available. * * @since 1.5.0 * * @param array $public_query_vars The array of whitelisted query variables. */ $this->public_query_vars = apply_filters( 'query_vars', $this->public_query_vars ); foreach ( get_post_types( array(), 'objects' ) as $post_type => $t ) if ( $t->query_var ) $post_type_query_vars[$t->query_var] = $post_type; foreach ( $this->public_query_vars as $wpvar ) { if ( isset( $this->extra_query_vars[$wpvar] ) ) $this->query_vars[$wpvar] = $this->extra_query_vars[$wpvar]; elseif ( isset( $_POST[$wpvar] ) ) $this->query_vars[$wpvar] = $_POST[$wpvar]; elseif ( isset( $_GET[$wpvar] ) ) $this->query_vars[$wpvar] = $_GET[$wpvar]; elseif ( isset( $perma_query_vars[$wpvar] ) ) $this->query_vars[$wpvar] = $perma_query_vars[$wpvar]; if ( !empty( $this->query_vars[$wpvar] ) ) { if ( ! is_array( $this->query_vars[$wpvar] ) ) { $this->query_vars[$wpvar] = (string) $this->query_vars[$wpvar]; } else { foreach ( $this->query_vars[$wpvar] as $vkey => $v ) { if ( !is_object( $v ) ) { $this->query_vars[$wpvar][$vkey] = (string) $v; } } } if ( isset($post_type_query_vars[$wpvar] ) ) { $this->query_vars['post_type'] = $post_type_query_vars[$wpvar]; $this->query_vars['name'] = $this->query_vars[$wpvar]; } } } // Convert urldecoded spaces back into + foreach ( get_taxonomies( array() , 'objects' ) as $taxonomy => $t ) if ( $t->query_var && isset( $this->query_vars[$t->query_var] ) ) $this->query_vars[$t->query_var] = str_replace( ' ', '+', $this->query_vars[$t->query_var] ); // Limit publicly queried post_types to those that are publicly_queryable if ( isset( $this->query_vars['post_type']) ) { $queryable_post_types = get_post_types( array('publicly_queryable' => true) ); if ( ! is_array( $this->query_vars['post_type'] ) ) { if ( ! in_array( $this->query_vars['post_type'], $queryable_post_types ) ) unset( $this->query_vars['post_type'] ); } else { $this->query_vars['post_type'] = array_intersect( $this->query_vars['post_type'], $queryable_post_types ); } } // Resolve conflicts between posts with numeric slugs and date archive queries. $this->query_vars = wp_resolve_numeric_slug_conflicts( $this->query_vars ); foreach ( (array) $this->private_query_vars as $var) { if ( isset($this->extra_query_vars[$var]) ) $this->query_vars[$var] = $this->extra_query_vars[$var]; } if ( isset($error) ) $this->query_vars['error'] = $error; /** * Filter the array of parsed query variables. * * @since 2.1.0 * * @param array $query_vars The array of requested query variables. */ $this->query_vars = apply_filters( 'request', $this->query_vars ); /** * Fires once all query variables for the current request have been parsed. * * @since 2.1.0 * * @param WP &$this Current WordPress environment instance (passed by reference). */ do_action_ref_array( 'parse_request', array( &$this ) ); } /** * Send additional HTTP headers for caching, content type, etc. * * Sets the X-Pingback header, 404 status (if 404), Content-type. If showing * a feed, it will also send last-modified, etag, and 304 status if needed. * * @since 2.0.0 */ public function send_headers() { $headers = array('X-Pingback' => get_bloginfo('pingback_url')); $status = null; $exit_required = false; if ( is_user_logged_in() ) $headers = array_merge($headers, wp_get_nocache_headers()); if ( ! empty( $this->query_vars['error'] ) ) { $status = (int) $this->query_vars['error']; if ( 404 === $status ) { if ( ! is_user_logged_in() ) $headers = array_merge($headers, wp_get_nocache_headers()); $headers['Content-Type'] = get_option('html_type') . '; charset=' . get_option('blog_charset'); } elseif ( in_array( $status, array( 403, 500, 502, 503 ) ) ) { $exit_required = true; } } elseif ( empty( $this->query_vars['feed'] ) ) { $headers['Content-Type'] = get_option('html_type') . '; charset=' . get_option('blog_charset'); } else { // We're showing a feed, so WP is indeed the only thing that last changed if ( !empty($this->query_vars['withcomments']) || false !== strpos( $this->query_vars['feed'], 'comments-' ) || ( empty($this->query_vars['withoutcomments']) && ( !empty($this->query_vars['p']) || !empty($this->query_vars['name']) || !empty($this->query_vars['page_id']) || !empty($this->query_vars['pagename']) || !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'), 0).' GMT'; else $wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastpostmodified('GMT'), 0).' 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; } } /** * Filter the HTTP headers before they're sent to the browser. * * @since 2.8.0 * * @param array $headers The list 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'] ); // In PHP 5.3+, make sure we are not sending a Last-Modified header. if ( function_exists( 'header_remove' ) ) { @header_remove( 'Last-Modified' ); } else { // In PHP 5.2, send an empty Last-Modified header, but only as a // last resort to override a header already sent. #WP23021 foreach ( headers_list() as $header ) { if ( 0 === stripos( $header, 'Last-Modified' ) ) { $headers['Last-Modified'] = ''; break; } } } } 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 'query_string' filter is deprecated, but still works. Plugins should * use the '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. /** * Filter the query string before parsing. * * @since 1.5.0 * @deprecated 2.1.0 Use 'query_vars' or 'request' filters instead. * * @param string $query_string The query string to modify. */ $this->query_string = apply_filters( 'query_string', $this->query_string ); parse_str($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. * * @global WP_Query $wp_query * @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. * * @since 2.0.0 */ 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 */ 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. * * @since 2.0.0 * * @global WP_Query $wp_query */ public 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 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 '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 $query_args Passed to {@link parse_request()} */ public function main($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 ) ); } } /** * 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 */ private $_matches; /** * store for mapping result * * @access public * @var string */ public $output; /** * subject to perform mapping on (query string containing $matches[] references * * @access private * @var string */ private $_subject; /** * regexp pattern to match $matches[] references * * @var string */ public $_pattern = '(\$matches\[[1-9]+[0-9]*\])'; // magic number /** * constructor * * @param string $subject subject if regex * @param array $matches data to use in map */ public function __construct($subject, $matches) { $this->_subject = $subject; $this->_matches = $matches; $this->output = $this->_map(); } /** * Substitute substring matches in subject. * * static helper function to ease use * * @static * @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 */ private function _map() { $callback = array($this, 'callback'); return preg_replace_callback($this->_pattern, $callback, $this->_subject); } /** * preg_replace_callback hook * * @access public * @param array $matches preg_replace regexp matches * @return string */ public function callback($matches) { $index = intval(substr($matches[0], 9, -1)); return ( isset( $this->_matches[$index] ) ? urlencode($this->_matches[$index]) : '' ); } }