Wordpress 3.7
[autoinstalls/wordpress.git] / wp-includes / class-wp.php
index 7ca64697a5a4754b2dbfb093d6e042c8a02351a3..05fd43ef6b530f4b75da0c2e976d410f11154f94 100644 (file)
@@ -15,7 +15,7 @@ class WP {
         * @access public
         * @var array
         */
-       var $public_query_vars = array('m', 'p', 'posts', 'w', 'cat', 'withcomments', 'withoutcomments', 's', 'search', 'exact', 'sentence', 'debug', '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');
+       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');
 
        /**
         * Private query variables.
@@ -25,7 +25,7 @@ class WP {
         * @since 2.0.0
         * @var array
         */
-       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');
+       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' );
 
        /**
         * Extra query variables set by the user.
@@ -120,6 +120,9 @@ class WP {
        function parse_request($extra_query_vars = '') {
                global $wp_rewrite;
 
+               if ( ! apply_filters( 'do_parse_request', true, $this, $extra_query_vars ) )
+                       return;
+
                $this->query_vars = array();
                $post_type_query_vars = array();
 
@@ -138,36 +141,27 @@ class WP {
                        $error = '404';
                        $this->did_permalink = true;
 
-                       if ( isset($_SERVER['PATH_INFO']) )
-                               $pathinfo = $_SERVER['PATH_INFO'];
-                       else
-                               $pathinfo = '';
-                       $pathinfo_array = explode('?', $pathinfo);
-                       $pathinfo = str_replace("%", "%25", $pathinfo_array[0]);
-                       $req_uri = $_SERVER['REQUEST_URI'];
-                       $req_uri_array = explode('?', $req_uri);
-                       $req_uri = $req_uri_array[0];
+                       $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'];
-                       $home_path = parse_url(home_url());
-                       if ( isset($home_path['path']) )
-                               $home_path = $home_path['path'];
-                       else
-                               $home_path = '';
-                       $home_path = trim($home_path, '/');
+                       $home_path = trim( parse_url( home_url(), PHP_URL_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
+                       // 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|", '', $req_uri);
+                       $req_uri = preg_replace("|^$home_path|i", '', $req_uri);
                        $req_uri = trim($req_uri, '/');
                        $pathinfo = trim($pathinfo, '/');
-                       $pathinfo = preg_replace("|^$home_path|", '', $pathinfo);
+                       $pathinfo = preg_replace("|^$home_path|i", '', $pathinfo);
                        $pathinfo = trim($pathinfo, '/');
                        $self = trim($self, '/');
-                       $self = preg_replace("|^$home_path|", '', $self);
+                       $self = preg_replace("|^$home_path|i", '', $self);
                        $self = trim($self, '/');
 
                        // The requested permalink is in $pathinfo for path info requests and
@@ -185,54 +179,58 @@ class WP {
 
                        // Look for matches.
                        $request_match = $request;
-                       foreach ( (array) $rewrite as $match => $query) {
-                               // Don't try to match against AtomPub calls
-                               if ( $req_uri == 'wp-app.php' )
-                                       break;
-
-                               // If the requesting file is the anchor of the match, prepend it
-                               // to the path info.
-                               if ( (! empty($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) ) {
-                                       // Got a match.
-                                       $this->matched_rule = $match;
-
-                                       // Trim the query of everything up to the '?'.
-                                       $query = preg_replace("!^.+\?!", '', $query);
+                       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, lets check to be sure about it
+                                                       if ( ! get_page_by_path( $matches[ $varmatch[1] ] ) )
+                                                               continue;
+                                               }
 
-                                       // Substitute the substring matches into the query.
-                                       $query = addslashes(WP_MatchesMapRegex::apply($query, $matches));
+                                               // Got a match.
+                                               $this->matched_rule = $match;
+                                               break;
+                                       }
+                               }
+                       }
 
-                                       $this->matched_query = $query;
+                       if ( isset( $this->matched_rule ) ) {
+                               // Trim the query of everything up to the '?'.
+                               $query = preg_replace("!^.+\?!", '', $query);
 
-                                       // Parse the query.
-                                       parse_str($query, $perma_query_vars);
+                               // Substitute the substring matches into the query.
+                               $query = addslashes(WP_MatchesMapRegex::apply($query, $matches));
 
-                                       // If we're processing a 404 request, clear the error var
-                                       // since we found something.
-                                       if ( isset($_GET['error']) )
-                                               unset($_GET['error']);
+                               $this->matched_query = $query;
 
-                                       if ( isset($error) )
-                                               unset($error);
+                               // Parse the query.
+                               parse_str($query, $perma_query_vars);
 
-                                       break;
-                               }
+                               // 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 ) {
-                               if ( isset($_GET['error']) )
-                                       unset($_GET['error']);
-
-                               if ( isset($error) )
-                                       unset($error);
+                               unset( $error, $_GET['error'] );
 
                                if ( isset($perma_query_vars) && strpos($_SERVER['PHP_SELF'], 'wp-admin/') !== false )
-                                       unset($perma_query_vars);
+                                       unset( $perma_query_vars );
 
                                $this->did_permalink = false;
                        }
@@ -240,7 +238,7 @@ class WP {
 
                $this->public_query_vars = apply_filters('query_vars', $this->public_query_vars);
 
-               foreach ( $GLOBALS['wp_post_types'] as $post_type => $t )
+               foreach ( get_post_types( array(), 'objects' ) as $post_type => $t )
                        if ( $t->query_var )
                                $post_type_query_vars[$t->query_var] = $post_type;
 
@@ -273,7 +271,7 @@ class WP {
                }
 
                // Convert urldecoded spaces back into +
-               foreach ( $GLOBALS['wp_taxonomies'] as $taxonomy => $t )
+               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] );
 
@@ -316,16 +314,21 @@ class WP {
 
                if ( is_user_logged_in() )
                        $headers = array_merge($headers, wp_get_nocache_headers());
-               if ( !empty($this->query_vars['error']) && '404' == $this->query_vars['error'] ) {
-                       $status = 404;
-                       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');
+               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 ) ) ) {
+                               $exit_required = true;
+                       }
                } else if ( empty($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'])
@@ -345,7 +348,7 @@ class WP {
 
                        // Support for Conditional GET
                        if (isset($_SERVER['HTTP_IF_NONE_MATCH']))
-                               $client_etag = stripslashes(stripslashes($_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']);
@@ -367,6 +370,26 @@ class WP {
 
                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}");
 
@@ -395,7 +418,7 @@ class WP {
                        }
                }
 
-               // query_string filter deprecated.  Use request filter instead.
+               // query_string filter deprecated. Use request filter instead.
                if ( has_filter('query_string') ) {  // Don't bother filtering and parsing if no plugins are hooked in.
                        $this->query_string = apply_filters('query_string', $this->query_string);
                        parse_str($this->query_string, $this->query_vars);
@@ -410,27 +433,35 @@ class WP {
         * WordPress environment.
         *
         * @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
         */
        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;
+               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['post'] = isset( $wp_query->post ) ? $wp_query->post : null;
                $GLOBALS['request'] = $wp_query->request;
 
-               if ( is_single() || is_page() ) {
-                       $GLOBALS['more'] = 1;
+               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 );
        }
 
        /**
@@ -468,19 +499,36 @@ class WP {
        function handle_404() {
                global $wp_query;
 
-               if ( !is_admin() && ( 0 == count( $wp_query->posts ) ) && !is_404() && !is_robots() && !is_search() && !is_home() ) {
+               // 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() ) && $wp_query->get_queried_object() && !is_paged() ) {
-                               if ( !is_404() )
-                                       status_header( 200 );
+                       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;
                        }
-                       $wp_query->set_404();
-                       status_header( 404 );
-                       nocache_headers();
-               } elseif ( !is_404() ) {
-                       status_header( 200 );
                }
+
+               // Guess it's time to 404.
+               $wp_query->set_404();
+               status_header( 404 );
+               nocache_headers();
        }
 
        /**
@@ -504,18 +552,6 @@ class WP {
                do_action_ref_array('wp', array(&$this));
        }
 
-       /**
-        * PHP4 Constructor - Does nothing.
-        *
-        * Call main() method when ready to run setup.
-        *
-        * @since 2.0.0
-        *
-        * @return WP
-        */
-       function WP() {
-               // Empty.
-       }
 }
 
 /**
@@ -575,11 +611,11 @@ class WP_MatchesMapRegex {
         *
         * @access public
         * @param string $subject subject
-        * @param array  $matches data used for subsitution
+        * @param array  $matches data used for substitution
         * @return string
         */
-       function apply($subject, $matches) {
-               $oSelf =& new WP_MatchesMapRegex($subject, $matches);
+       public static function apply($subject, $matches) {
+               $oSelf = new WP_MatchesMapRegex($subject, $matches);
                return $oSelf->output;
        }
 
@@ -590,7 +626,7 @@ class WP_MatchesMapRegex {
         * @return string
         */
        function _map() {
-               $callback = array(&$this, 'callback');
+               $callback = array($this, 'callback');
                return preg_replace_callback($this->_pattern, $callback, $this->_subject);
        }
 
@@ -607,5 +643,3 @@ class WP_MatchesMapRegex {
        }
 
 }
-
-?>