Ticket #2123: 404 non existant posts, authors and cats.diff

classes.php

@@ -74 +74 @@
 
         // Parse a query string and set query type booleans.
         function parse_query ($query) {
+                global $wpdb;
                 if ( !empty($query) || !isset($this->query) ) {
                         $this->init();
                         parse_str($query, $qv);
@@ -102 +103 @@
                         $this->is_single = true;
                         $this->is_attachment = true;
                 } elseif ('' != $qv['name']) {
-                        $this->is_single = true;
+                                if ($qv['name'] == $wpdb->get_var("SELECT post_name FROM $wpdb->posts WHERE post_name = '" . $qv['name'] . "' LIMIT 1")) {
+                                        $this->is_single = true;                        
+                                }
+                                else {
+                                        $this->is_404 = true;
+                                        $this->is_single = false;
+                                }
                 } elseif ( $qv['p'] ) {
                         $this->is_single = true;
                 } elseif (('' != $qv['hour']) && ('' != $qv['minute']) &&('' != $qv['second']) && ('' != $qv['year']) && ('' != $qv['monthnum']) && ('' != $qv['day'])) {
@@ -189 +196 @@
                         }
 
                         if ('' != $qv['category_name']) {
-                                $this->is_category = true;
+                                if ($qv['category_name'] == $wpdb->get_var("SELECT category_nicename FROM $wpdb->categories WHERE category_nicename = '" . $qv['category_name'] . "' LIMIT 1")) {
+                                        $this->is_category = true;                      
+                                }
+                                else {
+                                        $this->is_404 = true;
+                                        $this->is_category = false;
+                                }
                         }
             
                         if ((empty($qv['author'])) || ($qv['author'] == '0')) {
                                 $this->is_author = false;
                         } else {
-                                $this->is_author = true;
+                                if ($qv['author_name'] == $wpdb->get_var("SELECT user_nicename FROM $wpdb->users WHERE user_nicename = '" . $qv['user_nicename'] . "' LIMIT 1")) {
+                                        $this->is_author = true;                        
+                                }
+                                else {
+                                        $this->is_404 = true;
+                                        $this->is_author = false;
+                                }
                         }
 
                         if ('' != $qv['author_name']) {