]> scripts.mit.edu Git - autoinstallsdev/mediawiki.git/blobdiff - includes/SpecialPage.php
MediaWiki 1.16.0
[autoinstallsdev/mediawiki.git] / includes / SpecialPage.php
index 4fbd7b9f5b1d391d27fbce6725d4ac5911a70a84..80e2f7ed3f27118bd55b92ed93f3cb2f798d4ecc 100644 (file)
 <?php
 /**
- * SpecialPage: handling special pages and lists thereof
- * $wgSpecialPages is a list of all SpecialPage objects. These objects are
- * either instances of SpecialPage or a sub-class thereof. They have an
- * execute() method, which sends the HTML for the special page to $wgOut.
- * The parent class has an execute() method which distributes the call to
- * the historical global functions. Additionally, execute() also checks if the
- * user has the necessary access privileges and bails out if not.
+ * SpecialPage: handling special pages and lists thereof.
  *
- * To add a special page at run-time, use SpecialPage::addPage().
- * DO NOT manipulate this array at run-time.
+ * To add a special page in an extension, add to $wgSpecialPages either
+ * an object instance or an array containing the name and constructor
+ * parameters. The latter is preferred for performance reasons.
  *
- * @package MediaWiki
- * @subpackage SpecialPage
+ * The object instantiated must be either an instance of SpecialPage or a
+ * sub-class thereof. It must have an execute() method, which sends the HTML
+ * for the special page to $wgOut. The parent class has an execute() method
+ * which distributes the call to the historical global functions. Additionally,
+ * execute() also checks if the user has the necessary access privileges
+ * and bails out if not.
+ *
+ * To add a core special page, use the similar static list in
+ * SpecialPage::$mList. To remove a core static special page at runtime, use
+ * a SpecialPage_initList hook.
+ *
+ * @file
+ * @ingroup SpecialPage
+ * @defgroup SpecialPage SpecialPage
  */
 
-
-/**
- * @access private
- */
-$wgSpecialPages = array(
-       'DoubleRedirects'       => new SpecialPage ( 'DoubleRedirects' ),
-       'BrokenRedirects'       => new SpecialPage ( 'BrokenRedirects' ),
-       'Disambiguations'       => new SpecialPage ( 'Disambiguations' ),
-
-       'Userlogin'         => new SpecialPage( 'Userlogin' ),
-       'Userlogout'        => new UnlistedSpecialPage( 'Userlogout' ),
-       'Preferences'       => new SpecialPage( 'Preferences' ),
-       'Watchlist'         => new SpecialPage( 'Watchlist' ),
-
-       'Recentchanges'     => new IncludableSpecialPage( 'Recentchanges' ),
-       'Upload'            => new SpecialPage( 'Upload' ),
-       'Imagelist'         => new SpecialPage( 'Imagelist' ),
-       'Newimages'         => new SpecialPage( 'Newimages' ),
-       'Listusers'         => new SpecialPage( 'Listusers' ),
-       'Statistics'        => new SpecialPage( 'Statistics' ),
-       'Random'        => new SpecialPage( 'Randompage' ),
-       'Lonelypages'       => new SpecialPage( 'Lonelypages' ),
-       'Uncategorizedpages'=> new SpecialPage( 'Uncategorizedpages' ),
-       'Uncategorizedcategories'=> new SpecialPage( 'Uncategorizedcategories' ),
-       'Unusedcategories'      => new SpecialPage( 'Unusedcategories' ),
-       'Unusedimages'      => new SpecialPage( 'Unusedimages' ),
-       'Wantedpages'   => new SpecialPage( 'Wantedpages' ),
-       'Mostlinked'    => new SpecialPage( 'Mostlinked' ),
-       'Shortpages'    => new SpecialPage( 'Shortpages' ),
-       'Longpages'             => new SpecialPage( 'Longpages' ),
-       'Newpages'              => new IncludableSpecialPage( 'Newpages' ),
-       'Ancientpages'  => new SpecialPage( 'Ancientpages' ),
-       'Deadendpages'  => new SpecialPage( 'Deadendpages' ),
-       'Allpages'              => new IncludableSpecialPage( 'Allpages' ),
-       'Ipblocklist'   => new SpecialPage( 'Ipblocklist' ),
-       'Specialpages'  => new UnlistedSpecialPage( 'Specialpages' ),
-       'Contributions' => new UnlistedSpecialPage( 'Contributions' ),
-       'Emailuser'             => new UnlistedSpecialPage( 'Emailuser' ),
-       'Whatlinkshere' => new UnlistedSpecialPage( 'Whatlinkshere' ),
-       'Recentchangeslinked' => new UnlistedSpecialPage( 'Recentchangeslinked' ),
-       'Movepage'              => new UnlistedSpecialPage( 'Movepage' ),
-       'Blockme'       => new UnlistedSpecialPage( 'Blockme' ),
-       'Booksources'   => new SpecialPage( 'Booksources' ),
-       'Categories'    => new SpecialPage( 'Categories' ),
-       'Export'                => new SpecialPage( 'Export' ),
-       'Version'               => new SpecialPage( 'Version' ),
-       'Allmessages'   => new SpecialPage( 'Allmessages' ),
-       'Log'           => new SpecialPage( 'Log' ),
-       'Blockip'               => new SpecialPage( 'Blockip', 'block' ),
-       'Undelete'              => new SpecialPage( 'Undelete', 'delete' ),
-       "Import"                => new SpecialPage( "Import", 'import' ),
-       'Lockdb'                => new SpecialPage( 'Lockdb', 'siteadmin' ),
-       'Unlockdb'              => new SpecialPage( 'Unlockdb', 'siteadmin' ),
-       'Userrights'    => new SpecialPage( 'Userrights', 'userrights' ),
-);
-
-if ( $wgUseValidation )
-       $wgSpecialPages['Validate'] = new SpecialPage( 'Validate' );
-
-if( !$wgDisableCounters ) {
-       $wgSpecialPages['Popularpages'] = new SpecialPage( 'Popularpages' );
-}
-
-if( !$wgDisableInternalSearch ) {
-       $wgSpecialPages['Search'] = new UnlistedSpecialPage( 'Search' );
-}
-
-if( $wgEmailAuthentication ) {
-       $wgSpecialPages['Confirmemail'] = new UnlistedSpecialPage( 'Confirmemail' );
-}
-
 /**
  * Parent special page class, also static functions for handling the special
- * page list
- * @package MediaWiki
+ * page list.
+ * @ingroup SpecialPage
  */
-class SpecialPage
-{
+class SpecialPage {
        /**#@+
         * @access private
         */
        /**
-        * The name of the class, used in the URL.
+        * The canonical name of this special page
         * Also used for the default <h1> heading, @see getDescription()
         */
        var $mName;
+       /**
+        * The local name of this special page
+        */
+       var $mLocalName;
        /**
         * Minimum user level required to access this page, or "" for anyone.
         * Also used to categorise the pages in Special:Specialpages
@@ -126,30 +65,313 @@ class SpecialPage
         * Whether the special page can be included in an article
         */
        var $mIncludable;
-
+       /**
+        * Query parameters that can be passed through redirects
+        */
+       var $mAllowedRedirectParams = array();
+       /**
+        * List of special pages, followed by parameters.
+        * If the only parameter is a string, that is the page name.
+        * Otherwise, it is an array. The format is one of:
+        ** array( 'SpecialPage', name, right )
+        ** array( 'IncludableSpecialPage', name, right, listed? )
+        ** array( 'UnlistedSpecialPage', name, right )
+        ** array( 'SpecialRedirectToSpecial', name, page to redirect to, special page param, ... )
+        */
+       static public $mList = array(
+               # Maintenance Reports
+               'BrokenRedirects'           => array( 'SpecialPage', 'BrokenRedirects' ),
+               'Deadendpages'              => array( 'SpecialPage', 'Deadendpages' ),
+               'DoubleRedirects'           => array( 'SpecialPage', 'DoubleRedirects' ),
+               'Longpages'                 => array( 'SpecialPage', 'Longpages' ),
+               'Ancientpages'              => array( 'SpecialPage', 'Ancientpages' ),
+               'Lonelypages'               => array( 'SpecialPage', 'Lonelypages' ),
+               'Fewestrevisions'           => array( 'SpecialPage', 'Fewestrevisions' ),
+               'Withoutinterwiki'          => array( 'SpecialPage', 'Withoutinterwiki' ),
+               'Protectedpages'            => array( 'SpecialPage', 'Protectedpages' ),
+               'Protectedtitles'           => array( 'SpecialPage', 'Protectedtitles' ),
+               'Shortpages'                => array( 'SpecialPage', 'Shortpages' ),
+               'Uncategorizedcategories'   => array( 'SpecialPage', 'Uncategorizedcategories' ),
+               'Uncategorizedimages'       => array( 'SpecialPage', 'Uncategorizedimages' ),
+               'Uncategorizedpages'        => array( 'SpecialPage', 'Uncategorizedpages' ),
+               'Uncategorizedtemplates'    => array( 'SpecialPage', 'Uncategorizedtemplates' ),
+               'Unusedcategories'          => array( 'SpecialPage', 'Unusedcategories' ),
+               'Unusedimages'              => array( 'SpecialPage', 'Unusedimages' ),
+               'Unusedtemplates'           => array( 'SpecialPage', 'Unusedtemplates' ),
+               'Unwatchedpages'            => array( 'SpecialPage', 'Unwatchedpages', 'unwatchedpages' ),
+               'Wantedcategories'          => array( 'SpecialPage', 'Wantedcategories' ),
+               'Wantedfiles'               => array( 'SpecialPage', 'Wantedfiles' ),
+               'Wantedpages'               => array( 'IncludableSpecialPage', 'Wantedpages' ),
+               'Wantedtemplates'           => array( 'SpecialPage', 'Wantedtemplates' ),
+
+               # List of pages
+               'Allpages'                  => 'SpecialAllpages',
+               'Prefixindex'               => 'SpecialPrefixindex',
+               'Categories'                => array( 'SpecialPage', 'Categories' ),
+               'Disambiguations'           => array( 'SpecialPage', 'Disambiguations' ),
+               'Listredirects'             => array( 'SpecialPage', 'Listredirects' ),
+
+               # Login/create account
+               'Userlogin'                 => array( 'SpecialPage', 'Userlogin' ),
+               'CreateAccount'             => array( 'SpecialRedirectToSpecial', 'CreateAccount', 'Userlogin', 'signup', array( 'uselang' ) ),
+
+               # Users and rights
+               'Blockip'                   => array( 'SpecialPage', 'Blockip', 'block' ),
+               'Ipblocklist'               => array( 'SpecialPage', 'Ipblocklist' ),
+               'Resetpass'                 => 'SpecialResetpass',
+               'DeletedContributions'      => 'DeletedContributionsPage',
+               'Preferences'               => 'SpecialPreferences',
+               'Contributions'             => 'SpecialContributions',
+               'Listgrouprights'           => 'SpecialListGroupRights',
+               'Listusers'                 => array( 'SpecialPage', 'Listusers' ),
+               'Activeusers'               => 'SpecialActiveUsers',
+               'Userrights'                => 'UserrightsPage',
+
+               # Recent changes and logs
+               'Newimages'                 => array( 'IncludableSpecialPage', 'Newimages' ),
+               'Log'                       => array( 'SpecialPage', 'Log' ),
+               'Watchlist'                 => array( 'SpecialPage', 'Watchlist' ),
+               'Newpages'                  => 'SpecialNewpages',
+               'Recentchanges'             => 'SpecialRecentchanges',
+               'Recentchangeslinked'       => 'SpecialRecentchangeslinked',
+               'Tags'                      => 'SpecialTags',
+
+               # Media reports and uploads
+               'Listfiles'                 => array( 'SpecialPage', 'Listfiles' ),
+               'Filepath'                  => array( 'SpecialPage', 'Filepath' ),
+               'MIMEsearch'                => array( 'SpecialPage', 'MIMEsearch' ),
+               'FileDuplicateSearch'       => array( 'SpecialPage', 'FileDuplicateSearch' ),
+               'Upload'                    => 'SpecialUpload',
+
+               # Wiki data and tools
+               'Statistics'                => 'SpecialStatistics',
+               'Allmessages'               => 'SpecialAllmessages',
+               'Version'                   => 'SpecialVersion',
+               'Lockdb'                    => array( 'SpecialPage', 'Lockdb', 'siteadmin' ),
+               'Unlockdb'                  => array( 'SpecialPage', 'Unlockdb', 'siteadmin' ),
+
+               # Redirecting special pages
+               'LinkSearch'                => array( 'SpecialPage', 'LinkSearch' ),
+               'Randompage'                => 'Randompage',
+               'Randomredirect'            => 'SpecialRandomredirect',
+
+               # High use pages
+               'Mostlinkedcategories'      => array( 'SpecialPage', 'Mostlinkedcategories' ),
+               'Mostimages'                => array( 'SpecialPage', 'Mostimages' ),
+               'Mostlinked'                => array( 'SpecialPage', 'Mostlinked' ),
+               'Mostlinkedtemplates'       => array( 'SpecialPage', 'Mostlinkedtemplates' ),
+               'Mostcategories'            => array( 'SpecialPage', 'Mostcategories' ),
+               'Mostrevisions'             => array( 'SpecialPage', 'Mostrevisions' ),
+
+               # Page tools
+               'Export'                    => 'SpecialExport',
+               'Import'                    => 'SpecialImport',
+               'Undelete'                  => array( 'SpecialPage', 'Undelete', 'deletedhistory' ),
+               'Whatlinkshere'             => 'SpecialWhatlinkshere',
+               'MergeHistory'              => array( 'SpecialPage', 'MergeHistory', 'mergehistory' ),
+
+               # Other
+               'Booksources'               => 'SpecialBookSources',
+
+               # Unlisted / redirects
+               'Blankpage'                 => 'SpecialBlankpage',
+               'Blockme'                   => array( 'UnlistedSpecialPage', 'Blockme' ),
+               'Emailuser'                 => array( 'UnlistedSpecialPage', 'Emailuser' ),
+               'Listadmins'                => array( 'SpecialRedirectToSpecial', 'Listadmins', 'Listusers', 'sysop' ),
+               'Listbots'                  => array( 'SpecialRedirectToSpecial', 'Listbots', 'Listusers', 'bot' ),
+               'Movepage'                  => array( 'UnlistedSpecialPage', 'Movepage' ),
+               'Mycontributions'           => array( 'SpecialMycontributions' ),
+               'Mypage'                    => array( 'SpecialMypage' ),
+               'Mytalk'                    => array( 'SpecialMytalk' ),
+               'Revisiondelete'            => 'SpecialRevisionDelete',
+               'Specialpages'              => array( 'UnlistedSpecialPage', 'Specialpages' ),
+               'Userlogout'                => array( 'UnlistedSpecialPage', 'Userlogout' ),
+       );
+
+       static public $mAliases;
+       static public $mListInitialised = false;
 
        /**#@-*/
 
+       /**
+        * Initialise the special page list
+        * This must be called before accessing SpecialPage::$mList
+        */
+       static function initList() {
+               global $wgSpecialPages;
+               global $wgDisableCounters, $wgDisableInternalSearch, $wgEmailAuthentication;
+
+               if ( self::$mListInitialised ) {
+                       return;
+               }
+               wfProfileIn( __METHOD__ );
+
+               # Better to set this now, to avoid infinite recursion in carelessly written hooks
+               self::$mListInitialised = true;
+
+               if( !$wgDisableCounters ) {
+                       self::$mList['Popularpages'] = array( 'SpecialPage', 'Popularpages' );
+               }
+
+               if( !$wgDisableInternalSearch ) {
+                       self::$mList['Search'] = array( 'SpecialPage', 'Search' );
+               }
+
+               if( $wgEmailAuthentication ) {
+                       self::$mList['Confirmemail'] = 'EmailConfirmation';
+                       self::$mList['Invalidateemail'] = 'EmailInvalidation';
+               }
+
+               # Add extension special pages
+               self::$mList = array_merge( self::$mList, $wgSpecialPages );
+
+               # Run hooks
+               # This hook can be used to remove undesired built-in special pages
+               wfRunHooks( 'SpecialPage_initList', array( &self::$mList ) );
+               wfProfileOut( __METHOD__ );
+       }
+
+       static function initAliasList() {
+               if ( !is_null( self::$mAliases ) ) {
+                       return;
+               }
+
+               global $wgContLang;
+               $aliases = $wgContLang->getSpecialPageAliases();
+               $missingPages = self::$mList;
+               self::$mAliases = array();
+               foreach ( $aliases as $realName => $aliasList ) {
+                       foreach ( $aliasList as $alias ) {
+                               self::$mAliases[$wgContLang->caseFold( $alias )] = $realName;
+                       }
+                       unset( $missingPages[$realName] );
+               }
+               foreach ( $missingPages as $name => $stuff ) {
+                       self::$mAliases[$wgContLang->caseFold( $name )] = $name;
+               }
+       }
 
        /**
-        * Add a page to the list of valid special pages
-        * $obj->execute() must send HTML to $wgOut then return
-        * Use this for a special page extension
+        * Given a special page alias, return the special page name.
+        * Returns false if there is no such alias.
+        */
+       static function resolveAlias( $alias ) {
+               global $wgContLang;
+
+               if ( !self::$mListInitialised ) self::initList();
+               if ( is_null( self::$mAliases ) ) self::initAliasList();
+               $caseFoldedAlias = $wgContLang->caseFold( $alias );
+               if ( isset( self::$mAliases[$caseFoldedAlias] ) ) {
+                       return self::$mAliases[$caseFoldedAlias];
+               } else {
+                       return false;
+               }
+       }
+
+       /**
+        * Given a special page name with a possible subpage, return an array
+        * where the first element is the special page name and the second is the
+        * subpage.
+        */
+       static function resolveAliasWithSubpage( $alias ) {
+               $bits = explode( '/', $alias, 2 );
+               $name = self::resolveAlias( $bits[0] );
+               if( !isset( $bits[1] ) ) { // bug 2087
+                       $par = null;
+               } else {
+                       $par = $bits[1];
+               }
+               return array( $name, $par );
+       }
+
+       /**
+        * Add a page to the list of valid special pages. This used to be the preferred
+        * method for adding special pages in extensions. It's now suggested that you add
+        * an associative record to $wgSpecialPages. This avoids autoloading SpecialPage.
+        *
+        * @param SpecialPage $page
         * @static
         */
-       function addPage( &$obj ) {
-               global $wgSpecialPages;
-               $wgSpecialPages[$obj->mName] = $obj;
+       static function addPage( &$page ) {
+               if ( !self::$mListInitialised ) {
+                       self::initList();
+               }
+               self::$mList[$page->mName] = $page;
+       }
+
+       /**
+        * Add a page to a certain display group for Special:SpecialPages
+        *
+        * @param mixed $page (SpecialPage or string)
+        * @param string $group
+        * @static
+        */
+       static function setGroup( $page, $group ) {
+               global $wgSpecialPageGroups;
+               $name = is_object($page) ? $page->mName : $page;
+               $wgSpecialPageGroups[$name] = $group;
+       }
+
+       /**
+        * Add a page to a certain display group for Special:SpecialPages
+        *
+        * @param SpecialPage $page
+        * @static
+        */
+       static function getGroup( &$page ) {
+               global $wgSpecialPageGroups;
+               static $specialPageGroupsCache = array();
+               if( isset($specialPageGroupsCache[$page->mName]) ) {
+                       return $specialPageGroupsCache[$page->mName];
+               }
+               $group = wfMsg('specialpages-specialpagegroup-'.strtolower($page->mName));
+               if( $group == ''
+                || wfEmptyMsg('specialpages-specialpagegroup-'.strtolower($page->mName), $group ) ) {
+                       $group = isset($wgSpecialPageGroups[$page->mName])
+                               ? $wgSpecialPageGroups[$page->mName]
+                               : '-';
+               }
+               if( $group == '-' ) $group = 'other';
+               $specialPageGroupsCache[$page->mName] = $group;
+               return $group;
        }
 
        /**
         * Remove a special page from the list
-        * Occasionally used to disable expensive or dangerous special pages
+        * Formerly used to disable expensive or dangerous special pages. The
+        * preferred method is now to add a SpecialPage_initList hook.
+        *
         * @static
         */
-       function removePage( $name ) {
-               global $wgSpecialPages;
-               unset( $wgSpecialPages[$name] );
+       static function removePage( $name ) {
+               if ( !self::$mListInitialised ) {
+                       self::initList();
+               }
+               unset( self::$mList[$name] );
+       }
+
+       /**
+        * Check if a given name exist as a special page or as a special page alias
+        * @param $name string: name of a special page
+        * @return boolean: true if a special page exists with this name
+        */
+       static function exists( $name ) {
+               global $wgContLang;
+               if ( !self::$mListInitialised ) {
+                       self::initList();
+               }
+               if( !self::$mAliases ) {
+                       self::initAliasList();
+               }
+
+               # Remove special pages inline parameters:
+               $bits = explode( '/', $name );
+               $name = $wgContLang->caseFold($bits[0]);
+
+               return
+                       array_key_exists( $name, self::$mList )
+                       or array_key_exists( $name, self::$mAliases )
+               ;
        }
 
        /**
@@ -157,54 +379,103 @@ class SpecialPage
         * @static
         * @param string $name
         */
-       function getPage( $name ) {
-               global $wgSpecialPages;
-               if ( array_key_exists( $name, $wgSpecialPages ) ) {
-                       return $wgSpecialPages[$name];
+       static function getPage( $name ) {
+               if ( !self::$mListInitialised ) {
+                       self::initList();
+               }
+               if ( array_key_exists( $name, self::$mList ) ) {
+                       $rec = self::$mList[$name];
+                       if ( is_string( $rec ) ) {
+                               $className = $rec;
+                               self::$mList[$name] = new $className;
+                       } elseif ( is_array( $rec ) ) {
+                               $className = array_shift( $rec );
+                               self::$mList[$name] = wfCreateObject( $className, $rec );
+                       }
+                       return self::$mList[$name];
+               } else {
+                       return null;
+               }
+       }
+
+       /**
+        * Get a special page with a given localised name, or NULL if there
+        * is no such special page.
+        */
+       static function getPageByAlias( $alias ) {
+               $realName = self::resolveAlias( $alias );
+               if ( $realName ) {
+                       return self::getPage( $realName );
                } else {
-                       return NULL;
+                       return null;
                }
        }
 
        /**
+        * Return categorised listable special pages which are available
+        * for the current user, and everyone.
         * @static
-        * @param string $name
-        * @return mixed Title object if the redirect exists, otherwise NULL
         */
-       function getRedirect( $name ) {
+       static function getUsablePages() {
                global $wgUser;
-               switch ( $name ) {
-                       case 'Mypage':
-                               return Title::makeTitle( NS_USER, $wgUser->getName() );
-                       case 'Mytalk':
-                               return Title::makeTitle( NS_USER_TALK, $wgUser->getName() );
-                       case 'Mycontributions':
-                               return Title::makeTitle( NS_SPECIAL, 'Contributions/' . $wgUser->getName() );
-                       case 'Listadmins':
-                               return Title::makeTitle( NS_SPECIAL, 'Listusers/sysop' ); # @bug 2832
-                       case 'Randompage':
-                               return Title::makeTitle( NS_SPECIAL, 'Random' );
-                       default:
-                               return NULL;
+               if ( !self::$mListInitialised ) {
+                       self::initList();
+               }
+               $pages = array();
+
+               foreach ( self::$mList as $name => $rec ) {
+                       $page = self::getPage( $name );
+                       if ( $page->isListed()
+                               && (
+                                       !$page->isRestricted()
+                                       || $page->userCanExecute( $wgUser )
+                               )
+                       ) {
+                               $pages[$name] = $page;
+                       }
                }
+               return $pages;
        }
 
        /**
-        * Return categorised listable special pages
-        * Returns a 2d array where the first index is the restriction name
+        * Return categorised listable special pages for all users
         * @static
         */
-       function getPages() {
-               global $wgSpecialPages;
-               $pages = array(
-                 '' => array(),
-                 'sysop' => array(),
-                 'developer' => array()
-               );
-
-               foreach ( $wgSpecialPages as $name => $page ) {
-                       if ( $page->isListed() ) {
-                               $pages[$page->getRestriction()][$page->getName()] =& $wgSpecialPages[$name];
+       static function getRegularPages() {
+               if ( !self::$mListInitialised ) {
+                       self::initList();
+               }
+               $pages = array();
+
+               foreach ( self::$mList as $name => $rec ) {
+                       $page = self::getPage( $name );
+                       if ( $page->isListed() && !$page->isRestricted() ) {
+                               $pages[$name] = $page;
+                       }
+               }
+               return $pages;
+       }
+
+       /**
+        * Return categorised listable special pages which are available
+        * for the current user, but not for everyone
+        * @static
+        */
+       static function getRestrictedPages() {
+               global $wgUser;
+               if( !self::$mListInitialised ) {
+                       self::initList();
+               }
+               $pages = array();
+
+               foreach( self::$mList as $name => $rec ) {
+                       $page = self::getPage( $name );
+                       if(
+                               $page->isListed()
+                               && $page->isRestricted()
+                               && $page->userCanExecute( $wgUser )
+                       ) {
+                               $pages[$name] = $page;
                        }
                }
                return $pages;
@@ -221,51 +492,74 @@ class SpecialPage
         * @param $title          a title object
         * @param $including      output is being captured for use in {{special:whatever}}
         */
-       function executePath( &$title, $including = false ) {
-               global $wgSpecialPages, $wgOut, $wgTitle;
+       static function executePath( &$title, $including = false ) {
+               global $wgOut, $wgTitle, $wgRequest;
+               wfProfileIn( __METHOD__ );
 
-               $bits = split( "/", $title->getDBkey(), 2 );
+               # FIXME: redirects broken due to this call
+               $bits = explode( '/', $title->getDBkey(), 2 );
                $name = $bits[0];
                if( !isset( $bits[1] ) ) { // bug 2087
-                       $par = NULL;
+                       $par = null;
                } else {
                        $par = $bits[1];
                }
-
-               $page = SpecialPage::getPage( $name );
-               if ( is_null( $page ) ) {
-                       if ( $including ) {
-                               return false;
-                       } else {
-                               $redir = SpecialPage::getRedirect( $name );
-                               if ( isset( $redir ) ) {
-                                       if ( isset( $par ) )
-                                               $wgOut->redirect( $redir->getFullURL() . '/' . $par );
-                                       else
-                                               $wgOut->redirect( $redir->getFullURL() );
-                                       $retVal = $redir;
-                               } else {
-                                       $wgOut->setArticleRelated( false );
-                                       $wgOut->setRobotpolicy( "noindex,follow" );
-                                       $wgOut->errorpage( "nosuchspecialpage", "nospecialpagetext" );
-                                       $retVal = false;
-                               }
-                       }
-               } else {
-                       if ( $including && !$page->includable() ) {
-                               return false;
+               $page = SpecialPage::getPageByAlias( $name );
+               # Nonexistent?
+               if ( !$page ) {
+                       if ( !$including ) {
+                               $wgOut->setArticleRelated( false );
+                               $wgOut->setRobotPolicy( 'noindex,nofollow' );
+                               $wgOut->setStatusCode( 404 );
+                               $wgOut->showErrorPage( 'nosuchspecialpage', 'nospecialpagetext' );
                        }
-                       if($par !== NULL) {
-                               $wgTitle = Title::makeTitle( NS_SPECIAL, $name );
-                       } else {
-                               $wgTitle = $title;
+                       wfProfileOut( __METHOD__ );
+                       return false;
+               }
+
+               # Check for redirect
+               if ( !$including ) {
+                       $redirect = $page->getRedirect( $par );
+                       if ( $redirect ) {
+                               $query = $page->getRedirectQuery();
+                               $url = $redirect->getFullUrl( $query );
+                               $wgOut->redirect( $url );
+                               wfProfileOut( __METHOD__ );
+                               return $redirect;
                        }
-                       $page->including( $including );
+               }
 
-                       $page->execute( $par );
-                       $retVal = true;
+               # Redirect to canonical alias for GET commands
+               # Not for POST, we'd lose the post data, so it's best to just distribute
+               # the request. Such POST requests are possible for old extensions that
+               # generate self-links without being aware that their default name has
+               # changed.
+               if ( !$including && $name != $page->getLocalName() && !$wgRequest->wasPosted() ) {
+                       $query = $_GET;
+                       unset( $query['title'] );
+                       $query = wfArrayToCGI( $query );
+                       $title = $page->getTitle( $par );
+                       $url = $title->getFullUrl( $query );
+                       $wgOut->redirect( $url );
+                       wfProfileOut( __METHOD__ );
+                       return $redirect;
                }
-               return $retVal;
+
+               if ( $including && !$page->includable() ) {
+                       wfProfileOut( __METHOD__ );
+                       return false;
+               } elseif ( !$including ) {
+                       $wgTitle = $page->getTitle();
+               }
+               $page->including( $including );
+
+               // Execute special page
+               $profName = 'Special:' . $page->getName();
+               wfProfileIn( $profName );
+               $page->execute( $par );
+               wfProfileOut( $profName );
+               wfProfileOut( __METHOD__ );
+               return true;
        }
 
        /**
@@ -274,12 +568,13 @@ class SpecialPage
         * a redirect.
         * @static
         */
-       function capturePath( &$title ) {
+       static function capturePath( &$title ) {
                global $wgOut, $wgTitle;
 
                $oldTitle = $wgTitle;
                $oldOut = $wgOut;
                $wgOut = new OutputPage;
+               $wgOut->setTitle( $title );
 
                $ret = SpecialPage::executePath( $title, true );
                if ( $ret === true ) {
@@ -290,6 +585,77 @@ class SpecialPage
                return $ret;
        }
 
+       /**
+        * Get the local name for a specified canonical name
+        *
+        * @param $name
+        * @param mixed $subpage Boolean false, or string
+        *
+        * @return string
+        */
+       static function getLocalNameFor( $name, $subpage = false ) {
+               global $wgContLang;
+               $aliases = $wgContLang->getSpecialPageAliases();
+               if ( isset( $aliases[$name][0] ) ) {
+                       $name = $aliases[$name][0];
+               } else {
+                       // Try harder in case someone misspelled the correct casing
+                       $found = false;
+                       foreach ( $aliases as $n => $values ) {
+                               if ( strcasecmp( $name, $n ) === 0 ) {
+                                       wfWarn( "Found alias defined for $n when searching for special page aliases
+for $name. Case mismatch?" );
+                                       $name = $values[0];
+                                       $found = true;
+                                       break;
+                               }
+                       }
+                       if ( !$found ) wfWarn( "Did not find alias for special page '$name'.
+Perhaps no page aliases are defined for it?" );
+               }
+               if ( $subpage !== false && !is_null( $subpage ) ) {
+                       $name = "$name/$subpage";
+               }
+               return $wgContLang->ucfirst( $name );
+       }
+
+       /**
+        * Get a localised Title object for a specified special page name
+        */
+       static function getTitleFor( $name, $subpage = false ) {
+               $name = self::getLocalNameFor( $name, $subpage );
+               if ( $name ) {
+                       return Title::makeTitle( NS_SPECIAL, $name );
+               } else {
+                       throw new MWException( "Invalid special page name \"$name\"" );
+               }
+       }
+
+       /**
+        * Get a localised Title object for a page name with a possibly unvalidated subpage
+        */
+       static function getSafeTitleFor( $name, $subpage = false ) {
+               $name = self::getLocalNameFor( $name, $subpage );
+               if ( $name ) {
+                       return Title::makeTitleSafe( NS_SPECIAL, $name );
+               } else {
+                       return null;
+               }
+       }
+
+       /**
+        * Get a title for a given alias
+        * @return Title or null if there is no such alias
+        */
+       static function getTitleForAlias( $alias ) {
+               $name = self::resolveAlias( $alias );
+               if ( $name ) {
+                       return self::getTitleFor( $name );
+               } else {
+                       return null;
+               }
+       }
+
        /**
         * Default constructor for special pages
         * Derivative classes should call this from their constructor
@@ -301,7 +667,7 @@ class SpecialPage
         *     and displayRestrictionError()
         *
         * @param string $name Name of the special page, as seen in links and URLs
-        * @param string $restriction Minimum user level required, e.g. "sysop" or "developer".
+        * @param string $restriction User right required, e.g. "block" or "delete"
         * @param boolean $listed Whether the page is listed in Special:Specialpages
         * @param string $function Function called by execute(). By default it is constructed from $name
         * @param string $file File which is included by execute(). It is also constructed from $name by default
@@ -317,34 +683,73 @@ class SpecialPage
                        $this->mFunction = $function;
                }
                if ( $file === 'default' ) {
-                       $this->mFile = "Special{$name}.php";
+                       $this->mFile = dirname(__FILE__) . "/specials/Special$name.php";
                } else {
                        $this->mFile = $file;
                }
        }
 
-       # Accessor functions, see the descriptions of the associated variables above
+       /**#@+
+         * Accessor
+         *
+         * @deprecated
+         */
        function getName() { return $this->mName; }
        function getRestriction() { return $this->mRestriction; }
-       function isListed() { return $this->mListed; }
        function getFile() { return $this->mFile; }
-       function including( $x = NULL ) { return wfSetVar( $this->mIncluding, $x ); }
-       function includable( $x = NULL ) { return wfSetVar( $this->mIncludable, $x ); }
+       function isListed() { return $this->mListed; }
+       /**#@-*/
+
+       /**#@+
+         * Accessor and mutator
+         */
+       function name( $x = null ) { return wfSetVar( $this->mName, $x ); }
+       function restrictions( $x = null) {
+               # Use the one below this
+               wfDeprecated( __METHOD__ );
+               return wfSetVar( $this->mRestriction, $x );
+       }
+       function restriction( $x = null) { return wfSetVar( $this->mRestriction, $x ); }
+       function listed( $x = null) { return wfSetVar( $this->mListed, $x ); }
+       function func( $x = null) { return wfSetVar( $this->mFunction, $x ); }
+       function file( $x = null) { return wfSetVar( $this->mFile, $x ); }
+       function includable( $x = null ) { return wfSetVar( $this->mIncludable, $x ); }
+       function including( $x = null ) { return wfSetVar( $this->mIncluding, $x ); }
+       /**#@-*/
 
        /**
-        * Checks if the given user (identified by an object) can execute this
-        * special page (as defined by $mRestriction)
+        * Get the localised name of the special page
         */
-       function userCanExecute( &$user ) {
-               if ( $this->mRestriction == "" ) {
-                       return true;
-               } else {
-                       if ( in_array( $this->mRestriction, $user->getRights() ) ) {
-                               return true;
-                       } else {
-                               return false;
-                       }
+       function getLocalName() {
+               if ( !isset( $this->mLocalName ) ) {
+                       $this->mLocalName = self::getLocalNameFor( $this->mName );
                }
+               return $this->mLocalName;
+       }
+
+       /**
+        * Can be overridden by subclasses with more complicated permissions
+        * schemes.
+        *
+        * @return bool Should the page be displayed with the restricted-access
+        *   pages?
+        */
+       public function isRestricted() {
+               global $wgGroupPermissions;
+               // DWIM: If all anons can do something, then it is not restricted
+               return $this->mRestriction != '' && empty($wgGroupPermissions['*'][$this->mRestriction]);
+       }
+
+       /**
+        * Checks if the given user (identified by an object) can execute this
+        * special page (as defined by $mRestriction).  Can be overridden by sub-
+        * classes with more complicated permissions schemes.
+        *
+        * @param User $user The user to check
+        * @return bool Does the user have permission to view the page?
+        */
+       public function userCanExecute( $user ) {
+               return $user->isAllowed( $this->mRestriction );
        }
 
        /**
@@ -361,30 +766,57 @@ class SpecialPage
        function setHeaders() {
                global $wgOut;
                $wgOut->setArticleRelated( false );
-               $wgOut->setRobotPolicy( "noindex,follow" );
+               $wgOut->setRobotPolicy( "noindex,nofollow" );
                $wgOut->setPageTitle( $this->getDescription() );
        }
 
        /**
         * Default execute method
         * Checks user permissions, calls the function given in mFunction
+        *
+        * This may be overridden by subclasses.
         */
        function execute( $par ) {
-               global $wgUser, $wgOut, $wgTitle;
+               global $wgUser;
 
                $this->setHeaders();
 
                if ( $this->userCanExecute( $wgUser ) ) {
-                       if ( $this->mFile ) {
+                       $func = $this->mFunction;
+                       // only load file if the function does not exist
+                       if(!is_callable($func) and $this->mFile) {
                                require_once( $this->mFile );
                        }
-                       $func = $this->mFunction;
-                       $func( $par, $this );
+                       $this->outputHeader();
+                       call_user_func( $func, $par, $this );
                } else {
                        $this->displayRestrictionError();
                }
        }
 
+       /**
+        * Outputs a summary message on top of special pages
+        * Per default the message key is the canonical name of the special page
+        * May be overriden, i.e. by extensions to stick with the naming conventions
+        * for message keys: 'extensionname-xxx'
+        *
+        * @param string message key of the summary
+        */
+       function outputHeader( $summaryMessageKey = '' ) {
+               global $wgOut, $wgContLang;
+
+               if( $summaryMessageKey == '' ) {
+                       $msg = $wgContLang->lc( $this->name() ) . '-summary';
+               } else {
+                       $msg = $summaryMessageKey;
+               }
+               $out = wfMsgNoTrans( $msg );
+               if ( ! wfEmptyMsg( $msg, $out ) and  $out !== '' and ! $this->including() ) {
+                       $wgOut->wrapWikiMsg( "<div class='mw-specialpage-summary'>\n$1</div>", $msg );
+               }
+
+       }
+
        # Returns the name that goes in the <h1> in the special page itself, and also the name that
        # will be listed in Special:Specialpages
        #
@@ -397,8 +829,8 @@ class SpecialPage
        /**
         * Get a self-referential title object
         */
-       function getTitle() {
-               return Title::makeTitle( NS_SPECIAL, $this->mName );
+       function getTitle( $subpage = false ) {
+               return self::getTitleFor( $this->mName, $subpage );
        }
 
        /**
@@ -408,11 +840,35 @@ class SpecialPage
                return wfSetVar( $this->mListed, $listed );
        }
 
+       /**
+        * If the special page is a redirect, then get the Title object it redirects to.
+        * False otherwise.
+        */
+       function getRedirect( $subpage ) {
+               return false;
+       }
+
+       /**
+        * Return part of the request string for a special redirect page
+        * This allows passing, e.g. action=history to Special:Mypage, etc.
+        *
+        * @return string
+        */
+       function getRedirectQuery() {
+               global $wgRequest;
+               $params = array();
+               foreach( $this->mAllowedRedirectParams as $arg ) {
+                       if( ( $val = $wgRequest->getVal( $arg, null ) ) !== null )
+                               $params[] = $arg . '=' . $val;
+               }
+
+               return count( $params ) ? implode( '&', $params ) : false;
+       }
 }
 
 /**
  * Shortcut to construct a special page which is unlisted by default
- * @package MediaWiki
+ * @ingroup SpecialPage
  */
 class UnlistedSpecialPage extends SpecialPage
 {
@@ -423,7 +879,7 @@ class UnlistedSpecialPage extends SpecialPage
 
 /**
  * Shortcut to construct an includable special  page
- * @package MediaWiki
+ * @ingroup SpecialPage
  */
 class IncludableSpecialPage extends SpecialPage
 {
@@ -431,4 +887,90 @@ class IncludableSpecialPage extends SpecialPage
                SpecialPage::SpecialPage( $name, $restriction, $listed, $function, $file, true );
        }
 }
-?>
+
+/**
+ * Shortcut to construct a special page alias.
+ * @ingroup SpecialPage
+ */
+class SpecialRedirectToSpecial extends UnlistedSpecialPage {
+       var $redirName, $redirSubpage;
+
+       function __construct( $name, $redirName, $redirSubpage = false, $redirectParams = array() ) {
+               parent::__construct( $name );
+               $this->redirName = $redirName;
+               $this->redirSubpage = $redirSubpage;
+               $this->mAllowedRedirectParams = $redirectParams;
+       }
+
+       function getRedirect( $subpage ) {
+               if ( $this->redirSubpage === false ) {
+                       return SpecialPage::getTitleFor( $this->redirName, $subpage );
+               } else {
+                       return SpecialPage::getTitleFor( $this->redirName, $this->redirSubpage );
+               }
+       }
+}
+
+/** SpecialMypage, SpecialMytalk and SpecialMycontributions special pages
+ * are used to get user independant links pointing to the user page, talk
+ * page and list of contributions.
+ * This can let us cache a single copy of any generated content for all
+ * users.
+ */
+
+/**
+ * Shortcut to construct a special page pointing to current user user's page.
+ * @ingroup SpecialPage
+ */
+class SpecialMypage extends UnlistedSpecialPage {
+       function __construct() {
+               parent::__construct( 'Mypage' );
+               $this->mAllowedRedirectParams = array( 'action' , 'preload' , 'editintro', 'section' );
+       }
+
+       function getRedirect( $subpage ) {
+               global $wgUser;
+               if ( strval( $subpage ) !== '' ) {
+                       return Title::makeTitle( NS_USER, $wgUser->getName() . '/' . $subpage );
+               } else {
+                       return Title::makeTitle( NS_USER, $wgUser->getName() );
+               }
+       }
+}
+
+/**
+ * Shortcut to construct a special page pointing to current user talk page.
+ * @ingroup SpecialPage
+ */
+class SpecialMytalk extends UnlistedSpecialPage {
+       function __construct() {
+               parent::__construct( 'Mytalk' );
+               $this->mAllowedRedirectParams = array( 'action' , 'preload' , 'editintro', 'section' );
+       }
+
+       function getRedirect( $subpage ) {
+               global $wgUser;
+               if ( strval( $subpage ) !== '' ) {
+                       return Title::makeTitle( NS_USER_TALK, $wgUser->getName() . '/' . $subpage );
+               } else {
+                       return Title::makeTitle( NS_USER_TALK, $wgUser->getName() );
+               }
+       }
+}
+
+/**
+ * Shortcut to construct a special page pointing to current user contributions.
+ * @ingroup SpecialPage
+ */
+class SpecialMycontributions extends UnlistedSpecialPage {
+       function __construct() {
+               parent::__construct(  'Mycontributions' );
+               $this->mAllowedRedirectParams = array( 'limit', 'namespace', 'tagfilter',
+                       'offset', 'dir', 'year', 'month', 'feed' );
+       }
+
+       function getRedirect( $subpage ) {
+               global $wgUser;
+               return SpecialPage::getTitleFor( 'Contributions', $wgUser->getName() );
+       }
+}