Wordpress 3.5
[autoinstalls/wordpress.git] / wp-includes / class-wp.php
index 4f8bc3582593ddb8c5a0b43e6731407f0adb4c38..b1b1e2876e301b26441d011eb0731f4f42bd5347 100644 (file)
@@ -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();
 
@@ -161,13 +164,13 @@ class WP {
                        // 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
@@ -192,7 +195,7 @@ class WP {
                                        $query = $rewrite['$'];
                                        $matches = array('');
                                }
-                       } else if ( $req_uri != 'wp-app.php' ) {
+                       } 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 != $request )
@@ -226,16 +229,14 @@ class WP {
                                // Parse the query.
                                parse_str($query, $perma_query_vars);
 
-                               // If we're processing a 404 request, clear the error var
-                               // since we found something.
-                               unset( $_GET['error'] );
-                               unset( $error );
+                               // 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( $_GET['error'] );
-                               unset( $error );
+                               unset( $error, $_GET['error'] );
 
                                if ( isset($perma_query_vars) && strpos($_SERVER['PHP_SELF'], 'wp-admin/') !== false )
                                        unset( $perma_query_vars );
@@ -322,11 +323,15 @@ 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 {
@@ -376,6 +381,9 @@ class WP {
                foreach( (array) $headers as $name => $field_value )
                        @header("{$name}: {$field_value}");
 
+               if ( isset( $headers['Last-Modified'] ) && empty( $headers['Last-Modified'] ) && function_exists( 'header_remove' ) )
+                       @header_remove( 'Last-Modified' );
+
                if ( $exit_required )
                        exit();
 
@@ -601,7 +609,7 @@ class WP_MatchesMapRegex {
         * @return string
         */
        function _map() {
-               $callback = array(&$this, 'callback');
+               $callback = array($this, 'callback');
                return preg_replace_callback($this->_pattern, $callback, $this->_subject);
        }