Force string to UTF-8 if we have mb stuff available.
[lhc/web/wiklou.git] / includes / SpecialPage.php
index b16af24..9125f37 100644 (file)
@@ -17,8 +17,7 @@
  * SpecialPage::$mList. To remove a core static special page at runtime, use
  * a SpecialPage_initList hook.
  *
- * @package MediaWiki
- * @subpackage SpecialPage
+ * @addtogroup SpecialPage
  */
 
 /**
@@ -27,8 +26,8 @@
 
 /**
  * Parent special page class, also static functions for handling the special
- * page list
- * @package MediaWiki
+ * page list.
+ * @addtogroup SpecialPage
  */
 class SpecialPage
 {
@@ -36,10 +35,14 @@ 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
@@ -65,72 +68,88 @@ 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();
 
        static public $mList = array(
-               'DoubleRedirects'       => array( 'SpecialPage', 'DoubleRedirects' ),
-               'BrokenRedirects'       => array( 'SpecialPage', 'BrokenRedirects' ),
-               'Disambiguations'       => array( 'SpecialPage', 'Disambiguations' ),
-
-               'Userlogin'         => array( 'SpecialPage', 'Userlogin' ),
-               'Userlogout'        => array( 'UnlistedSpecialPage', 'Userlogout' ),
-               'Preferences'       => array( 'SpecialPage', 'Preferences' ),
-               'Watchlist'         => array( 'SpecialPage', 'Watchlist' ),
-
-               'Recentchanges'     => array( 'IncludableSpecialPage', 'Recentchanges' ),
-               'Upload'            => array( 'SpecialPage', 'Upload' ),
-               'Imagelist'         => array( 'SpecialPage', 'Imagelist' ),
-               'Newimages'         => array( 'IncludableSpecialPage', 'Newimages' ),
-               'Listusers'         => array( 'SpecialPage', 'Listusers' ),
-               'Statistics'        => array( 'SpecialPage', 'Statistics' ),
-               'Random'            => array( 'SpecialPage', 'Randompage' ),
-               'Lonelypages'       => array( 'SpecialPage', 'Lonelypages' ),
-               'Uncategorizedpages'=> array( 'SpecialPage', 'Uncategorizedpages' ),
-               'Uncategorizedcategories'=> array( 'SpecialPage', 'Uncategorizedcategories' ),
-               'Uncategorizedimages' => array( 'SpecialPage', 'Uncategorizedimages' ),
-               'Unusedcategories'      => array( 'SpecialPage', 'Unusedcategories' ),
-               'Unusedimages'      => array( 'SpecialPage', 'Unusedimages' ),
-               'Wantedpages'       => array( 'IncludableSpecialPage', 'Wantedpages' ),
-               'Wantedcategories'  => array( 'SpecialPage', 'Wantedcategories' ),
-               'Mostlinked'        => array( 'SpecialPage', 'Mostlinked' ),
-               'Mostlinkedcategories' => array( 'SpecialPage', 'Mostlinkedcategories' ),
-               'Mostcategories'    => array( 'SpecialPage', 'Mostcategories' ),
-               'Mostimages'        => array( 'SpecialPage', 'Mostimages' ),
-               'Mostrevisions'     => array( 'SpecialPage', 'Mostrevisions' ),
-               'Shortpages'        => array( 'SpecialPage', 'Shortpages' ),
-               'Longpages'                 => array( 'SpecialPage', 'Longpages' ),
-               'Newpages'                  => array( 'IncludableSpecialPage', 'Newpages' ),
-               'Ancientpages'      => array( 'SpecialPage', 'Ancientpages' ),
-               'Deadendpages'      => array( 'SpecialPage', 'Deadendpages' ),
-               'Allpages'                  => array( 'IncludableSpecialPage', 'Allpages' ),
-               'Prefixindex'       => array( 'IncludableSpecialPage', 'Prefixindex' ) ,
-               'Ipblocklist'       => array( 'SpecialPage', 'Ipblocklist' ),
-               'Specialpages'      => array( 'UnlistedSpecialPage', 'Specialpages' ),
-               'Contributions'     => array( 'UnlistedSpecialPage', 'Contributions' ),
-               'Emailuser'                 => array( 'UnlistedSpecialPage', 'Emailuser' ),
-               'Whatlinkshere'     => array( 'UnlistedSpecialPage', 'Whatlinkshere' ),
-               'Recentchangeslinked' => array( 'UnlistedSpecialPage', 'Recentchangeslinked' ),
-               'Movepage'                  => array( 'UnlistedSpecialPage', 'Movepage' ),
-               'Blockme'           => array( 'UnlistedSpecialPage', 'Blockme' ),
-               'Booksources'       => array( 'SpecialPage', 'Booksources' ),
-               'Categories'        => array( 'SpecialPage', 'Categories' ),
-               'Export'                    => array( 'SpecialPage', 'Export' ),
-               'Version'                   => array( 'SpecialPage', 'Version' ),
-               'Allmessages'       => array( 'SpecialPage', 'Allmessages' ),
-               'Log'               => array( 'SpecialPage', 'Log' ),
-               'Blockip'                   => array( 'SpecialPage', 'Blockip', 'block' ),
-               'Undelete'                  => array( 'SpecialPage', 'Undelete', 'deletedhistory' ),
-               "Import"                    => array( 'SpecialPage', "Import", 'import' ),
-               'Lockdb'                    => array( 'SpecialPage', 'Lockdb', 'siteadmin' ),
-               'Unlockdb'                  => array( 'SpecialPage', 'Unlockdb', 'siteadmin' ),
-               'Userrights'        => array( 'SpecialPage', 'Userrights', 'userrights' ),
-               'MIMEsearch'        => array( 'SpecialPage', 'MIMEsearch' ),
-               'Unwatchedpages'    => array( 'SpecialPage', 'Unwatchedpages', 'unwatchedpages' ),
-               'Listredirects'     => array( 'SpecialPage', 'Listredirects' ),
-               'Revisiondelete'    => array( 'SpecialPage', 'Revisiondelete', 'deleterevision' ),
-               'Unusedtemplates'   => array( 'SpecialPage', 'Unusedtemplates' ),
-               'Randomredirect'    => array( 'SpecialPage', 'Randomredirect' ),
+               'DoubleRedirects'           => array( 'SpecialPage', 'DoubleRedirects' ),
+               'BrokenRedirects'           => array( 'SpecialPage', 'BrokenRedirects' ),
+               'Disambiguations'           => array( 'SpecialPage', 'Disambiguations' ),
+
+               'Userlogin'                 => array( 'SpecialPage', 'Userlogin' ),
+               'Userlogout'                => array( 'UnlistedSpecialPage', 'Userlogout' ),
+               'Preferences'               => array( 'SpecialPage', 'Preferences' ),
+               'Watchlist'                 => array( 'SpecialPage', 'Watchlist' ),
+
+               'Recentchanges'             => array( 'IncludableSpecialPage', 'Recentchanges' ),
+               'Upload'                    => array( 'SpecialPage', 'Upload' ),
+               'Imagelist'                 => array( 'SpecialPage', 'Imagelist' ),
+               'Newimages'                 => array( 'IncludableSpecialPage', 'Newimages' ),
+               'Listusers'                 => array( 'SpecialPage', 'Listusers' ),
+               'Statistics'                => array( 'SpecialPage', 'Statistics' ),
+               'Randompage'                => array( 'SpecialPage', 'Randompage' ),
+               'Lonelypages'               => array( 'SpecialPage', 'Lonelypages' ),
+               'Uncategorizedpages'        => array( 'SpecialPage', 'Uncategorizedpages' ),
+               'Uncategorizedcategories'   => array( 'SpecialPage', 'Uncategorizedcategories' ),
+               'Uncategorizedimages'       => array( 'SpecialPage', 'Uncategorizedimages' ),
+               'Uncategorizedtemplates'    => array( 'SpecialPage', 'Uncategorizedtemplates' ),
+               'Unusedcategories'          => array( 'SpecialPage', 'Unusedcategories' ),
+               'Unusedimages'              => array( 'SpecialPage', 'Unusedimages' ),
+               'Wantedpages'               => array( 'IncludableSpecialPage', 'Wantedpages' ),
+               'Wantedcategories'          => array( 'SpecialPage', 'Wantedcategories' ),
+               'Mostlinked'                => array( 'SpecialPage', 'Mostlinked' ),
+               'Mostlinkedcategories'      => array( 'SpecialPage', 'Mostlinkedcategories' ),
+               'Mostlinkedtemplates'       => array( 'SpecialPage', 'Mostlinkedtemplates' ),
+               'Mostcategories'            => array( 'SpecialPage', 'Mostcategories' ),
+               'Mostimages'                => array( 'SpecialPage', 'Mostimages' ),
+               'Mostrevisions'             => array( 'SpecialPage', 'Mostrevisions' ),
+               'Fewestrevisions'           => array( 'SpecialPage', 'Fewestrevisions' ),
+               'Shortpages'                => array( 'SpecialPage', 'Shortpages' ),
+               'Longpages'                 => array( 'SpecialPage', 'Longpages' ),
+               'Newpages'                  => array( 'IncludableSpecialPage', 'Newpages' ),
+               'Ancientpages'              => array( 'SpecialPage', 'Ancientpages' ),
+               'Deadendpages'              => array( 'SpecialPage', 'Deadendpages' ),
+               'Protectedpages'            => array( 'SpecialPage', 'Protectedpages' ),
+               'Allpages'                  => array( 'IncludableSpecialPage', 'Allpages' ),
+               'Prefixindex'               => array( 'IncludableSpecialPage', 'Prefixindex' ) ,
+               'Ipblocklist'               => array( 'SpecialPage', 'Ipblocklist' ),
+               'Specialpages'              => array( 'UnlistedSpecialPage', 'Specialpages' ),
+               'Contributions'             => array( 'SpecialPage', 'Contributions' ),
+               'Emailuser'                 => array( 'UnlistedSpecialPage', 'Emailuser' ),
+               'Whatlinkshere'             => array( 'SpecialPage', 'Whatlinkshere' ),
+               'Recentchangeslinked'       => array( 'UnlistedSpecialPage', 'Recentchangeslinked' ),
+               'Movepage'                  => array( 'UnlistedSpecialPage', 'Movepage' ),
+               'Blockme'                   => array( 'UnlistedSpecialPage', 'Blockme' ),
+               'Resetpass'                 => array( 'UnlistedSpecialPage', 'Resetpass' ),
+               'Booksources'               => 'SpecialBookSources',
+               'Categories'                => array( 'SpecialPage', 'Categories' ),
+               'Export'                    => array( 'SpecialPage', 'Export' ),
+               'Version'                   => array( 'SpecialPage', 'Version' ),
+               'Allmessages'               => array( 'SpecialPage', 'Allmessages' ),
+               'Log'                       => array( 'SpecialPage', 'Log' ),
+               'Blockip'                   => array( 'SpecialPage', 'Blockip', 'block' ),
+               'Undelete'                  => array( 'SpecialPage', 'Undelete', 'deletedhistory' ),
+               'Import'                    => array( 'SpecialPage', "Import", 'import' ),
+               'Lockdb'                    => array( 'SpecialPage', 'Lockdb', 'siteadmin' ),
+               'Unlockdb'                  => array( 'SpecialPage', 'Unlockdb', 'siteadmin' ),
+               'Userrights'                => array( 'SpecialPage', 'Userrights', 'userrights' ),
+               'MIMEsearch'                => array( 'SpecialPage', 'MIMEsearch' ),
+               'Unwatchedpages'            => array( 'SpecialPage', 'Unwatchedpages', 'unwatchedpages' ),
+               'Listredirects'             => array( 'SpecialPage', 'Listredirects' ),
+               'Revisiondelete'            => array( 'SpecialPage', 'Revisiondelete', 'deleterevision' ),
+               'Unusedtemplates'           => array( 'SpecialPage', 'Unusedtemplates' ),
+               'Randomredirect'            => array( 'SpecialPage', 'Randomredirect' ),
+               'Withoutinterwiki'          => array( 'SpecialPage', 'Withoutinterwiki' ),
+
+               'Mypage'                    => array( 'SpecialMypage' ),
+               'Mytalk'                    => array( 'SpecialMytalk' ),
+               'Mycontributions'           => array( 'SpecialMycontributions' ),
+               'Listadmins'                => array( 'SpecialRedirectToSpecial', 'Listadmins', 'Listusers', 'sysop' ),
        );
 
+       static public $mAliases;
        static public $mListInitialised = false;
 
        /**#@-*/
@@ -148,6 +167,9 @@ class SpecialPage
                }
                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' );
                }
@@ -157,21 +179,71 @@ class SpecialPage
                }
 
                if( $wgEmailAuthentication ) {
-                       self::$mList['Confirmemail'] = array( 'UnlistedSpecialPage', 'Confirmemail' );
+                       self::$mList['Confirmemail'] = 'EmailConfirmation';
                }
 
                # Add extension special pages
                self::$mList = array_merge( self::$mList, $wgSpecialPages );
 
-               # Better to set this now, to avoid infinite recursion in carelessly written hooks
-               self::$mListInitialised = true;
-
                # Run hooks
                # This hook can be used to remove undesired built-in special pages
                wfRunHooks( 'SpecialPage_initList', array( &self::$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;
+               }
+       }
+
+       /**
+        * 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, $par );
+       }
+
        /**
         * Add a page to the list of valid special pages. This used to be the preferred 
         * method for adding special pages in extensions. It's now suggested that you add 
@@ -204,6 +276,30 @@ class SpecialPage
                unset( self::$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 )
+               ;
+       }
+
        /**
         * Find the object with a given name and return it (or NULL)
         * @static
@@ -228,75 +324,57 @@ class SpecialPage
                }
        }
 
-
        /**
-        * @static
-        * @param string $name
-        * @return mixed Title object if the redirect exists, otherwise NULL
+        * Get a special page with a given localised name, or NULL if there
+        * is no such special page.
         */
-       static function getRedirect( $name ) {
-               global $wgUser;
-
-               $redirects = array(
-                       'Mypage' => Title::makeTitle( NS_USER, $wgUser->getName() ),
-                       'Mytalk' => Title::makeTitle( NS_USER_TALK, $wgUser->getName() ),
-                       'Mycontributions' => Title::makeTitle( NS_SPECIAL, 'Contributions/' . $wgUser->getName() ),
-                       'Listadmins' => Title::makeTitle( NS_SPECIAL, 'Listusers/sysop' ), # @bug 2832
-                       'Logs' => Title::makeTitle( NS_SPECIAL, 'Log' ),
-                       'Randompage' => Title::makeTitle( NS_SPECIAL, 'Random' ),
-                       'Userlist' => Title::makeTitle( NS_SPECIAL, 'Listusers' )
-               );
-               wfRunHooks( 'SpecialPageGetRedirect', array( &$redirects ) );
-
-               return isset( $redirects[$name] ) ? $redirects[$name] : null;
+       static function getPageByAlias( $alias ) {
+               $realName = self::resolveAlias( $alias );
+               if ( $realName ) {
+                       return self::getPage( $realName );
+               } else {
+                       return NULL;
+               }
        }
 
        /**
-        * Return part of the request string for a special redirect page
-        * This allows passing, e.g. action=history to Special:Mypage, etc.
-        *
-        * @param $name Name of the redirect page
-        * @return string
+        * Return categorised listable special pages for all users
+        * @static
         */
-       function getRedirectParams( $name ) {
-               global $wgRequest;
-               
-               $args = array();
-               switch( $name ) {
-                       case 'Mypage':
-                       case 'Mytalk':
-                       case 'Randompage':
-                               $args = array( 'action' );
+       static function getRegularPages() {
+               if ( !self::$mListInitialised ) {
+                       self::initList();
                }
-               
-               $params = array();
-               foreach( $args as $arg ) {
-                       if( $val = $wgRequest->getVal( $arg, false ) )
-                               $params[] = $arg . '=' . $val;
+               $pages = array();
+
+               foreach ( self::$mList as $name => $rec ) {
+                       $page = self::getPage( $name );
+                       if ( $page->isListed() && $page->getRestriction() == '' ) {
+                               $pages[$name] = $page;
+                       }
                }
-               
-               return count( $params ) ? implode( '&', $params ) : false;
-       }       
+               return $pages;
+       }
 
        /**
-        * Return categorised listable special pages
-        * Returns a 2d array where the first index is the restriction name
+        * Return categorised listable special pages which are available
+        * for the current user, but not for everyone
         * @static
         */
-       static function getPages() {
+       static function getRestrictedPages() {
+               global $wgUser;
                if ( !self::$mListInitialised ) {
                        self::initList();
                }
-               $pages = array(
-                 '' => array(),
-                 'sysop' => array(),
-                 'developer' => array()
-               );
+               $pages = array();
 
                foreach ( self::$mList as $name => $rec ) {
                        $page = self::getPage( $name );
                        if ( $page->isListed() ) {
-                               $pages[$page->getRestriction()][$page->getName()] = $page;
+                               $restriction = $page->getRestriction();
+                               if ( $restriction != '' && $wgUser->isAllowed( $restriction ) ) {
+                                       $pages[$name] = $page;
+                               }
                        }
                }
                return $pages;
@@ -314,67 +392,74 @@ class SpecialPage
         * @param $including      output is being captured for use in {{special:whatever}}
         */
        static function executePath( &$title, $including = false ) {
-               global $wgOut, $wgTitle;
-               $fname = 'SpecialPage::executePath';
-               wfProfileIn( $fname );
+               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;
                } else {
                        $par = $bits[1];
                }
-
-               $page = SpecialPage::getPage( $name );
-               if ( is_null( $page ) ) {
-                       if ( $including ) {
-                               wfProfileOut( $fname );
-                               return false;
-                       } else {
-                               $redir = SpecialPage::getRedirect( $name );
-                               if ( isset( $redir ) ) {
-                                       if( $par )
-                                               $redir = Title::makeTitle( $redir->getNamespace(), $redir->getText() . '/' . $par );
-                                       $params = SpecialPage::getRedirectParams( $name );
-                                       if( $params ) {
-                                               $url = $redir->getFullUrl( $params );
-                                       } else {
-                                               $url = $redir->getFullUrl();
-                                       }
-                                       $wgOut->redirect( $url );
-                                       $retVal = $redir;
-                                       $wgOut->redirect( $url );
-                                       $retVal = $redir;
-                               } else {
-                                       $wgOut->setArticleRelated( false );
-                                       $wgOut->setRobotpolicy( 'noindex,nofollow' );
-                                       $wgOut->setStatusCode( 404 );
-                                       $wgOut->showErrorPage( 'nosuchspecialpage', 'nospecialpagetext' );
-                                       $retVal = false;
-                               }
+               $page = SpecialPage::getPageByAlias( $name );
+
+               # Nonexistent?
+               if ( !$page ) {
+                       if ( !$including ) {
+                               $wgOut->setArticleRelated( false );
+                               $wgOut->setRobotpolicy( 'noindex,nofollow' );
+                               $wgOut->setStatusCode( 404 );
+                               $wgOut->showErrorPage( 'nosuchspecialpage', 'nospecialpagetext' );
                        }
-               } else {
-                       if ( $including && !$page->includable() ) {
-                               wfProfileOut( $fname );
-                               return false;
-                       } elseif ( !$including ) {
-                               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 );
+               }
 
-                       $profName = 'Special:' . $page->getName();
-                       wfProfileIn( $profName );
-                       $page->execute( $par );
-                       wfProfileOut( $profName );
-                       $retVal = true;
+               # Redirect to canonical alias for GET commands
+               # Not for POST, we'd lose the post data, so it's best to just distribute 
+               # the request. Such POST requests are possible for old extensions that 
+               # generate self-links without being aware that their default name has 
+               # changed.
+               if ( !$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;
                }
-               wfProfileOut( $fname );
-               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;
        }
 
        /**
@@ -399,6 +484,58 @@ class SpecialPage
                return $ret;
        }
 
+       /**
+        * Get the local name for a specified canonical name
+        */
+       static function getLocalNameFor( $name, $subpage = false ) {
+               global $wgContLang;
+               $aliases = $wgContLang->getSpecialPageAliases();
+               if ( isset( $aliases[$name][0] ) ) {
+                       $name = $aliases[$name][0];
+               }
+               if ( $subpage !== false && !is_null( $subpage ) ) {
+                       $name = "$name/$subpage";
+               }
+               return $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
@@ -426,7 +563,7 @@ class SpecialPage
                        $this->mFunction = $function;
                }
                if ( $file === 'default' ) {
-                       $this->mFile = "Special{$name}.php";
+                       $this->mFile = dirname(__FILE__) . "/Special{$name}.php";
                } else {
                        $this->mFile = $file;
                }
@@ -455,6 +592,16 @@ class SpecialPage
        function including( $x = NULL ) { return wfSetVar( $this->mIncluding, $x ); }
        /**#@-*/
 
+       /**
+        * Get the localised name of the special page
+        */
+       function getLocalName() {
+               if ( !isset( $this->mLocalName ) ) {
+                       $this->mLocalName = self::getLocalNameFor( $this->mName );
+               }
+               return $this->mLocalName;
+       }
+
        /**
         * Checks if the given user (identified by an object) can execute this
         * special page (as defined by $mRestriction)
@@ -484,6 +631,8 @@ class SpecialPage
        /**
         * Default execute method
         * Checks user permissions, calls the function given in mFunction
+        *
+        * This may be overridden by subclasses. 
         */
        function execute( $par ) {
                global $wgUser;
@@ -496,6 +645,7 @@ class SpecialPage
                        if(!function_exists($func) and $this->mFile) {
                                require_once( $this->mFile );
                        }
+                       # FIXME: these hooks are broken for extensions and anything else that subclasses SpecialPage. 
                        if ( wfRunHooks( 'SpecialPageExecuteBeforeHeader', array( &$this, &$par, &$func ) ) )
                                $this->outputHeader();
                        if ( ! wfRunHooks( 'SpecialPageExecuteBeforePage', array( &$this, &$par, &$func ) ) )
@@ -530,8 +680,8 @@ 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 );
        }
 
        /**
@@ -541,11 +691,35 @@ 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, false ) )
+                               $params[] = $arg . '=' . $val;
+               }
+               
+               return count( $params ) ? implode( '&', $params ) : false;
+       }
 }
 
 /**
  * Shortcut to construct a special page which is unlisted by default
- * @package MediaWiki
+ * @addtogroup SpecialPage
  */
 class UnlistedSpecialPage extends SpecialPage
 {
@@ -556,7 +730,7 @@ class UnlistedSpecialPage extends SpecialPage
 
 /**
  * Shortcut to construct an includable special  page
- * @package MediaWiki
+ * @addtogroup SpecialPage
  */
 class IncludableSpecialPage extends SpecialPage
 {
@@ -564,4 +738,90 @@ class IncludableSpecialPage extends SpecialPage
                SpecialPage::SpecialPage( $name, $restriction, $listed, $function, $file, true );
        }
 }
-?>
+
+/**
+ * Shortcut to construct a special page alias.
+ * @addtogroup 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.
+ * @addtogroup SpecialPage
+ */
+class SpecialMypage extends UnlistedSpecialPage {
+       function __construct() {
+               parent::__construct( 'Mypage' );
+               $this->mAllowedRedirectParams = array( 'action' );
+       }
+
+       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.
+ * @addtogroup SpecialPage
+ */
+class SpecialMytalk extends UnlistedSpecialPage {
+       function __construct() {
+               parent::__construct( 'Mytalk' );
+               $this->mAllowedRedirectParams = array( 'action' );
+       }
+
+       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.
+ * @addtogroup SpecialPage
+ */
+class SpecialMycontributions extends UnlistedSpecialPage {
+       function __construct() {
+               parent::__construct(  'Mycontributions' );
+       }
+
+       function getRedirect( $subpage ) {
+               global $wgUser;
+               return SpecialPage::getTitleFor( 'Contributions', $wgUser->getName() );
+       }
+}
+
+