API: added query parameter indexpageids to list the page ids of all returned page...
[lhc/web/wiklou.git] / includes / OutputPage.php
index 4336d94..458907f 100644 (file)
@@ -2,27 +2,26 @@
 if ( ! defined( 'MEDIAWIKI' ) )
        die( 1 );
 /**
- * @package MediaWiki
  */
 
 /**
  * @todo document
- * @package MediaWiki
  */
 class OutputPage {
-       var $mHeaders, $mMetatags, $mKeywords;
+       var $mMetatags, $mKeywords;
        var $mLinktags, $mPagetitle, $mBodytext, $mDebugtext;
        var $mHTMLtitle, $mRobotpolicy, $mIsarticle, $mPrintable;
        var $mSubtitle, $mRedirect, $mStatusCode;
        var $mLastModified, $mETag, $mCategoryLinks;
        var $mScripts, $mLinkColours, $mPageLinkTitle;
 
+       var $mAllowUserJs;
        var $mSuppressQuickbar;
        var $mOnloadHandler;
        var $mDoNothing;
        var $mContainsOldMagic, $mContainsNewMagic;
        var $mIsArticleRelated;
-       var $mParserOptions;
+       protected $mParserOptions; // lazy initialised, use parserOptions()
        var $mShowFeedLinks = false;
        var $mEnableClientCache = true;
        var $mArticleBodyOnly = false;
@@ -34,9 +33,10 @@ class OutputPage {
         * Constructor
         * Initialise private variables
         */
-       function OutputPage() {
-               $this->mHeaders = $this->mMetatags =
-               $this->mKeywords = $this->mLinktags = array();
+       function __construct() {
+               global $wgAllowUserJs;
+               $this->mAllowUserJs = $wgAllowUserJs;
+               $this->mMetatags = $this->mKeywords = $this->mLinktags = array();
                $this->mHTMLtitle = $this->mPagetitle = $this->mBodytext =
                $this->mRedirect = $this->mLastModified =
                $this->mSubtitle = $this->mDebugtext = $this->mRobotpolicy =
@@ -47,23 +47,65 @@ class OutputPage {
                $this->mCategoryLinks = array();
                $this->mDoNothing = false;
                $this->mContainsOldMagic = $this->mContainsNewMagic = 0;
-               $this->mParserOptions = ParserOptions::newFromUser( $temp = NULL );
+               $this->mParserOptions = null;
                $this->mSquidMaxage = 0;
                $this->mScripts = '';
+               $this->mHeadItems = array();
                $this->mETag = false;
                $this->mRevisionId = null;
                $this->mNewSectionLink = false;
        }
+       
+       public function redirect( $url, $responsecode = '302' ) {
+               # Strip newlines as a paranoia check for header injection in PHP<5.1.2
+               $this->mRedirect = str_replace( "\n", '', $url );
+               $this->mRedirectCode = $responsecode;
+       }
 
-       function addHeader( $name, $val ) { array_push( $this->mHeaders, $name.': '.$val ); }
-       function redirect( $url, $responsecode = '302' ) { $this->mRedirect = $url; $this->mRedirectCode = $responsecode; }
+       /**
+        * Set the HTTP status code to send with the output.
+        *
+        * @param int $statusCode
+        * @return nothing
+        */
        function setStatusCode( $statusCode ) { $this->mStatusCode = $statusCode; }
 
        # To add an http-equiv meta tag, precede the name with "http:"
        function addMeta( $name, $val ) { array_push( $this->mMetatags, array( $name, $val ) ); }
        function addKeyword( $text ) { array_push( $this->mKeywords, $text ); }
-       function addScript( $script ) { $this->mScripts .= $script; }
-       function getScript() { return $this->mScripts; }
+       function addScript( $script ) { $this->mScripts .= "\t\t".$script; }
+       function addStyle( $style ) {
+               global $wgStylePath, $wgStyleVersion;
+               $this->addLink(
+                               array(
+                                       'rel' => 'stylesheet',
+                                       'href' => $wgStylePath . '/' . $style . '?' . $wgStyleVersion ) );
+       }
+
+       /**
+        * Add a self-contained script tag with the given contents
+        * @param string $script JavaScript text, no <script> tags
+        */
+       function addInlineScript( $script ) {
+               global $wgJsMimeType;
+               $this->mScripts .= "<script type=\"$wgJsMimeType\">/*<![CDATA[*/\n$script\n/*]]>*/</script>";
+       }
+
+       function getScript() { 
+               return $this->mScripts . $this->getHeadItems(); 
+       }
+
+       function getHeadItems() {
+               $s = '';
+               foreach ( $this->mHeadItems as $item ) {
+                       $s .= $item;
+               }
+               return $s;
+       }
+
+       function addHeadItem( $name, $value ) {
+               $this->mHeadItems[$name] = $value;
+       }
 
        function setETag($tag) { $this->mETag = $tag; }
        function setArticleBodyOnly($only) { $this->mArticleBodyOnly = $only; }
@@ -85,11 +127,12 @@ class OutputPage {
        /**
         * checkLastModified tells the client to use the client-cached page if
         * possible. If sucessful, the OutputPage is disabled so that
-        * any future call to OutputPage->output() have no effect. The method
-        * returns true iff cache-ok headers was sent.
+        * any future call to OutputPage->output() have no effect.
+        *
+        * @return bool True iff cache-ok headers was sent.
         */
        function checkLastModified ( $timestamp ) {
-               global $wgCachePages, $wgCacheEpoch, $wgUser;
+               global $wgCachePages, $wgCacheEpoch, $wgUser, $wgRequest;
                $fname = 'OutputPage::checkLastModified';
 
                if ( !$timestamp || $timestamp == '19700101000000' ) {
@@ -119,12 +162,17 @@ class OutputPage {
                        wfDebug( "$fname: --  we might send Last-Modified : $lastmod\n", false );
                        if( ($ismodsince >= $timestamp ) && $wgUser->validateCache( $ismodsince ) && $ismodsince >= $wgCacheEpoch ) {
                                # Make sure you're in a place you can leave when you call us!
-                               header( "HTTP/1.0 304 Not Modified" );
+                               $wgRequest->response()->header( "HTTP/1.0 304 Not Modified" );
                                $this->mLastModified = $lastmod;
                                $this->sendCacheControl();
                                wfDebug( "$fname: CACHED client: $ismodsince ; user: $wgUser->mTouched ; page: $timestamp ; site $wgCacheEpoch\n", false );
                                $this->disable();
-                               @ob_end_clean(); // Don't output compressed blob
+                               
+                               // Don't output a compressed blob when using ob_gzhandler;
+                               // it's technically against HTTP spec and seems to confuse
+                               // Firefox when the response gets split over two packets.
+                               wfClearOutputBuffers();
+                               
                                return true;
                        } else {
                                wfDebug( "$fname: READY  client: $ismodsince ; user: $wgUser->mTouched ; page: $timestamp ; site $wgCacheEpoch\n", false );
@@ -159,9 +207,9 @@ class OutputPage {
                }
        }
 
-       function setRobotpolicy( $str ) { $this->mRobotpolicy = $str; }
-       function setHTMLTitle( $name ) {$this->mHTMLtitle = $name; }
-       function setPageTitle( $name ) {
+       public function setRobotpolicy( $str ) { $this->mRobotpolicy = $str; }
+       public function setHTMLTitle( $name ) {$this->mHTMLtitle = $name; }
+       public function setPageTitle( $name ) {
                global $action, $wgContLang;
                $name = $wgContLang->convert($name, true);
                $this->mPagetitle = $name;
@@ -174,50 +222,50 @@ class OutputPage {
 
                $this->setHTMLTitle( wfMsg( 'pagetitle', $name ) );
        }
-       function getHTMLTitle() { return $this->mHTMLtitle; }
-       function getPageTitle() { return $this->mPagetitle; }
-       function setSubtitle( $str ) { $this->mSubtitle = /*$this->parse(*/$str/*)*/; } // @bug 2514
-       function getSubtitle() { return $this->mSubtitle; }
-       function isArticle() { return $this->mIsarticle; }
-       function setPrintable() { $this->mPrintable = true; }
-       function isPrintable() { return $this->mPrintable; }
-       function setSyndicated( $show = true ) { $this->mShowFeedLinks = $show; }
-       function isSyndicated() { return $this->mShowFeedLinks; }
-       function setOnloadHandler( $js ) { $this->mOnloadHandler = $js; }
-       function getOnloadHandler() { return $this->mOnloadHandler; }
-       function disable() { $this->mDoNothing = true; }
-
-       function setArticleRelated( $v ) {
+       public function getHTMLTitle() { return $this->mHTMLtitle; }
+       public function getPageTitle() { return $this->mPagetitle; }
+       public function setSubtitle( $str ) { $this->mSubtitle = /*$this->parse(*/$str/*)*/; } // @bug 2514
+       public function getSubtitle() { return $this->mSubtitle; }
+       public function isArticle() { return $this->mIsarticle; }
+       public function setPrintable() { $this->mPrintable = true; }
+       public function isPrintable() { return $this->mPrintable; }
+       public function setSyndicated( $show = true ) { $this->mShowFeedLinks = $show; }
+       public function isSyndicated() { return $this->mShowFeedLinks; }
+       public function setOnloadHandler( $js ) { $this->mOnloadHandler = $js; }
+       public function getOnloadHandler() { return $this->mOnloadHandler; }
+       public function disable() { $this->mDoNothing = true; }
+
+       public function setArticleRelated( $v ) {
                $this->mIsArticleRelated = $v;
                if ( !$v ) {
                        $this->mIsarticle = false;
                }
        }
-       function setArticleFlag( $v ) {
+       public function setArticleFlag( $v ) {
                $this->mIsarticle = $v;
                if ( $v ) {
                        $this->mIsArticleRelated = $v;
                }
        }
 
-       function isArticleRelated() { return $this->mIsArticleRelated; }
+       public function isArticleRelated() { return $this->mIsArticleRelated; }
 
-       function getLanguageLinks() { return $this->mLanguageLinks; }
-       function addLanguageLinks($newLinkArray) {
+       public function getLanguageLinks() { return $this->mLanguageLinks; }
+       public function addLanguageLinks($newLinkArray) {
                $this->mLanguageLinks += $newLinkArray;
        }
-       function setLanguageLinks($newLinkArray) {
+       public function setLanguageLinks($newLinkArray) {
                $this->mLanguageLinks = $newLinkArray;
        }
 
-       function getCategoryLinks() {
+       public function getCategoryLinks() {
                return $this->mCategoryLinks;
        }
 
        /**
         * Add an array of categories, with names in the keys
         */
-       function addCategoryLinks($categories) {
+       public function addCategoryLinks($categories) {
                global $wgUser, $wgContLang;
 
                if ( !is_array( $categories ) ) {
@@ -229,33 +277,39 @@ class OutputPage {
                $lb->setArray( $arr );
                $lb->execute();
 
-               $sk =& $wgUser->getSkin();
-               foreach ( $categories as $category => $arbitrary ) {
+               $sk = $wgUser->getSkin();
+               foreach ( $categories as $category => $unused ) {
                        $title = Title::makeTitleSafe( NS_CATEGORY, $category );
                        $text = $wgContLang->convertHtml( $title->getText() );
                        $this->mCategoryLinks[] = $sk->makeLinkObj( $title, $text );
                }
        }
 
-       function setCategoryLinks($categories) {
+       public function setCategoryLinks($categories) {
                $this->mCategoryLinks = array();
                $this->addCategoryLinks($categories);
        }
 
-       function suppressQuickbar() { $this->mSuppressQuickbar = true; }
-       function isQuickbarSuppressed() { return $this->mSuppressQuickbar; }
+       public function suppressQuickbar() { $this->mSuppressQuickbar = true; }
+       public function isQuickbarSuppressed() { return $this->mSuppressQuickbar; }
 
-       function addHTML( $text ) { $this->mBodytext .= $text; }
-       function clearHTML() { $this->mBodytext = ''; }
-       function getHTML() { return $this->mBodytext; }
-       function debug( $text ) { $this->mDebugtext .= $text; }
+       public function disallowUserJs() { $this->mAllowUserJs = false; }
+       public function isUserJsAllowed() { return $this->mAllowUserJs; }
+
+       public function addHTML( $text ) { $this->mBodytext .= $text; }
+       public function clearHTML() { $this->mBodytext = ''; }
+       public function getHTML() { return $this->mBodytext; }
+       public function debug( $text ) { $this->mDebugtext .= $text; }
 
        /* @deprecated */
-       function setParserOptions( $options ) {
-               return $this->ParserOptions( $options );
+       public function setParserOptions( $options ) {
+               return $this->parserOptions( $options );
        }
 
-       function ParserOptions( $options = null ) {
+       public function parserOptions( $options = null ) {
+               if ( !$this->mParserOptions ) {
+                       $this->mParserOptions = new ParserOptions;
+               }
                return wfSetVar( $this->mParserOptions, $options );
        }
 
@@ -265,7 +319,7 @@ class OutputPage {
         * @param mixed $revid an integer, or NULL
         * @return mixed previous value
         */
-       function setRevisionId( $revid ) {
+       public function setRevisionId( $revid ) {
                $val = is_null( $revid ) ? null : intval( $revid );
                return wfSetVar( $this->mRevisionId, $val );
        }
@@ -274,24 +328,47 @@ class OutputPage {
         * Convert wikitext to HTML and add it to the buffer
         * Default assumes that the current page title will
         * be used.
+        *
+        * @param string $text
+        * @param bool   $linestart
         */
-       function addWikiText( $text, $linestart = true ) {
+       public function addWikiText( $text, $linestart = true ) {
                global $wgTitle;
                $this->addWikiTextTitle($text, $wgTitle, $linestart);
        }
 
-       function addWikiTextWithTitle($text, &$title, $linestart = true) {
+       public function addWikiTextWithTitle($text, &$title, $linestart = true) {
                $this->addWikiTextTitle($text, $title, $linestart);
        }
 
-       function addWikiTextTitle($text, &$title, $linestart) {
+       function addWikiTextTitleTidy($text, &$title, $linestart = true) {
+               $this->addWikiTextTitle( $text, $title, $linestart, true );
+       }
+
+       public function addWikiTextTitle($text, &$title, $linestart, $tidy = false) {
                global $wgParser;
-               $parserOutput = $wgParser->parse( $text, $title, $this->mParserOptions,
+
+               $fname = 'OutputPage:addWikiTextTitle';
+               wfProfileIn($fname);
+
+               wfIncrStats('pcache_not_possible');
+
+               $popts = $this->parserOptions();
+               $popts->setTidy($tidy);
+
+               $parserOutput = $wgParser->parse( $text, $title, $popts,
                        $linestart, true, $this->mRevisionId );
+
                $this->addParserOutput( $parserOutput );
+
+               wfProfileOut($fname);
        }
 
-       function addParserOutputNoText( &$parserOutput ) {
+       /**
+        * @todo document
+        * @param ParserOutput object &$parserOutput
+        */
+       public function addParserOutputNoText( &$parserOutput ) {
                $this->mLanguageLinks += $parserOutput->getLanguageLinks();
                $this->addCategoryLinks( $parserOutput->getCategories() );
                $this->mNewSectionLink = $parserOutput->getNewSection();
@@ -301,55 +378,74 @@ class OutputPage {
                }
                if ( $parserOutput->mHTMLtitle != "" ) {
                        $this->mPagetitle = $parserOutput->mHTMLtitle ;
+               }
+               if ( $parserOutput->mSubtitle != '' ) {
                        $this->mSubtitle .= $parserOutput->mSubtitle ;
                }
+               $this->mNoGallery = $parserOutput->getNoGallery();
+               $this->mHeadItems = array_merge( $this->mHeadItems, (array)$parserOutput->mHeadItems );
+               wfRunHooks( 'OutputPageParserOutput', array( &$this, $parserOutput ) );
        }
 
+       /**
+        * @todo document
+        * @param ParserOutput &$parserOutput
+        */
        function addParserOutput( &$parserOutput ) {
                $this->addParserOutputNoText( $parserOutput );
-               $this->addHTML( $parserOutput->getText() );
+               $text = $parserOutput->getText();
+               wfRunHooks( 'OutputPageBeforeHTML',array( &$this, &$text ) );
+               $this->addHTML( $text );
        }
 
        /**
         * Add wikitext to the buffer, assuming that this is the primary text for a page view
-        * Saves the text into the parser cache if possible
+        * Saves the text into the parser cache if possible.
+        *
+        * @param string  $text
+        * @param Article $article
+        * @param bool    $cache
+        * @deprecated Use Article::outputWikitext
         */
-       function addPrimaryWikiText( $text, $article, $cache = true ) {
+       public function addPrimaryWikiText( $text, $article, $cache = true ) {
                global $wgParser, $wgUser;
 
-               $this->mParserOptions->setTidy(true);
+               $popts = $this->parserOptions();
+               $popts->setTidy(true);
                $parserOutput = $wgParser->parse( $text, $article->mTitle,
-                       $this->mParserOptions, true, true, $this->mRevisionId );
-               $this->mParserOptions->setTidy(false);
+                       $popts, true, true, $this->mRevisionId );
+               $popts->setTidy(false);
                if ( $cache && $article && $parserOutput->getCacheTime() != -1 ) {
                        $parserCache =& ParserCache::singleton();
                        $parserCache->save( $parserOutput, $article, $wgUser );
                }
 
-               $this->addParserOutputNoText( $parserOutput );
-               $text = $parserOutput->getText();
-               $this->mNoGallery = $parserOutput->getNoGallery();
-               wfRunHooks( 'OutputPageBeforeHTML',array( &$this, &$text ) );
-               $parserOutput->setText( $text );
-               $this->addHTML( $parserOutput->getText() );
+               $this->addParserOutput( $parserOutput );
        }
 
        /**
-        * For anything that isn't primary text or interface message
+        * @deprecated use addWikiTextTidy()
         */
-       function addSecondaryWikiText( $text, $linestart = true ) {
+       public function addSecondaryWikiText( $text, $linestart = true ) {
                global $wgTitle;
-               $this->mParserOptions->setTidy(true);
-               $this->addWikiTextTitle($text, $wgTitle, $linestart);
-               $this->mParserOptions->setTidy(false);
+               $this->addWikiTextTitleTidy($text, $wgTitle, $linestart);
+       }
+
+       /**
+        * Add wikitext with tidy enabled
+        */
+       public function addWikiTextTidy(  $text, $linestart = true ) {
+               global $wgTitle;
+               $this->addWikiTextTitleTidy($text, $wgTitle, $linestart);
        }
 
 
        /**
         * Add the output of a QuickTemplate to the output buffer
+        *
         * @param QuickTemplate $template
         */
-       function addTemplate( &$template ) {
+       public function addTemplate( &$template ) {
                ob_start();
                $template->execute();
                $this->addHTML( ob_get_contents() );
@@ -358,38 +454,32 @@ class OutputPage {
 
        /**
         * Parse wikitext and return the HTML.
+        *
+        * @param string $text
+        * @param bool   $linestart Is this the start of a line?
+        * @param bool   $interface ??
         */
-       function parse( $text, $linestart = true, $interface = false ) {
+       public function parse( $text, $linestart = true, $interface = false ) {
                global $wgParser, $wgTitle;
-               if ( $interface) { $this->mParserOptions->setInterfaceMessage(true); }
-               $parserOutput = $wgParser->parse( $text, $wgTitle, $this->mParserOptions,
+               $popts = $this->parserOptions();
+               if ( $interface) { $popts->setInterfaceMessage(true); }
+               $parserOutput = $wgParser->parse( $text, $wgTitle, $popts,
                        $linestart, true, $this->mRevisionId );
-               if ( $interface) { $this->mParserOptions->setInterfaceMessage(false); }
+               if ( $interface) { $popts->setInterfaceMessage(false); }
                return $parserOutput->getText();
        }
 
        /**
-        * @param $article
-        * @param $user
+        * @param Article $article
+        * @param User    $user
         *
-        * @return bool
+        * @return bool True if successful, else false.
         */
-       function tryParserCache( &$article, $user ) {
+       public function tryParserCache( &$article, $user ) {
                $parserCache =& ParserCache::singleton();
                $parserOutput = $parserCache->get( $article, $user );
                if ( $parserOutput !== false ) {
-                       $this->mLanguageLinks += $parserOutput->getLanguageLinks();
-                       $this->addCategoryLinks( $parserOutput->getCategories() );
-                       $this->addKeywords( $parserOutput );
-                       $this->mNewSectionLink = $parserOutput->getNewSection();
-                       $this->mNoGallery = $parserOutput->getNoGallery();
-                       $text = $parserOutput->getText();
-                       wfRunHooks( 'OutputPageBeforeHTML', array( &$this, &$text ) );
-                       $this->addHTML( $text );
-                       $t = $parserOutput->getTitleText();
-                       if( !empty( $t ) ) {
-                               $this->setPageTitle( $t );
-                       }
+                       $this->addParserOutput( $parserOutput );
                        return true;
                } else {
                        return false;
@@ -397,18 +487,17 @@ class OutputPage {
        }
 
        /**
-        * Set the maximum cache time on the Squid in seconds
-        * @param $maxage
+        * @param int $maxage Maximum cache time on the Squid, in seconds.
         */
-       function setSquidMaxage( $maxage ) {
+       public function setSquidMaxage( $maxage ) {
                $this->mSquidMaxage = $maxage;
        }
 
        /**
         * Use enableClientCache(false) to force it to send nocache headers
-        * @param $state
+        * @param $state ??
         */
-       function enableClientCache( $state ) {
+       public function enableClientCache( $state ) {
                return wfSetVar( $this->mEnableClientCache, $state );
        }
 
@@ -418,18 +507,18 @@ class OutputPage {
                        && $wgRequest->getText('uselang', false) === false;
        }
 
-       function sendCacheControl() {
-               global $wgUseSquid, $wgUseESI, $wgSquidMaxage;
+       public function sendCacheControl() {
+               global $wgUseSquid, $wgUseESI, $wgUseETag, $wgSquidMaxage, $wgRequest;
                $fname = 'OutputPage::sendCacheControl';
 
-               if ($this->mETag)
-                       header("ETag: $this->mETag");
+               if ($wgUseETag && $this->mETag)
+                       $wgRequest->response()->header("ETag: $this->mETag");
 
                # don't serve compressed data to clients who can't handle it
                # maintain different caches for logged-in users and non-logged in ones
-               header( 'Vary: Accept-Encoding, Cookie' );
+               $wgRequest->response()->header( 'Vary: Accept-Encoding, Cookie' );
                if( !$this->uncacheableBecauseRequestvars() && $this->mEnableClientCache ) {
-                       if( $wgUseSquid && ! isset( $_COOKIE[ini_get( 'session.name') ] ) &&
+                       if( $wgUseSquid && session_id() == '' &&
                          ! $this->isPrintable() && $this->mSquidMaxage != 0 )
                        {
                                if ( $wgUseESI ) {
@@ -439,8 +528,8 @@ class OutputPage {
                                        wfDebug( "$fname: proxy caching with ESI; {$this->mLastModified} **\n", false );
                                        # start with a shorter timeout for initial testing
                                        # header( 'Surrogate-Control: max-age=2678400+2678400, content="ESI/1.0"');
-                                       header( 'Surrogate-Control: max-age='.$wgSquidMaxage.'+'.$this->mSquidMaxage.', content="ESI/1.0"');
-                                       header( 'Cache-Control: s-maxage=0, must-revalidate, max-age=0' );
+                                       $wgRequest->response()->header( 'Surrogate-Control: max-age='.$wgSquidMaxage.'+'.$this->mSquidMaxage.', content="ESI/1.0"');
+                                       $wgRequest->response()->header( 'Cache-Control: s-maxage=0, must-revalidate, max-age=0' );
                                } else {
                                        # We'll purge the proxy cache for anons explicitly, but require end user agents
                                        # to revalidate against the proxy on each visit.
@@ -449,24 +538,24 @@ class OutputPage {
                                        wfDebug( "$fname: local proxy caching; {$this->mLastModified} **\n", false );
                                        # start with a shorter timeout for initial testing
                                        # header( "Cache-Control: s-maxage=2678400, must-revalidate, max-age=0" );
-                                       header( 'Cache-Control: s-maxage='.$this->mSquidMaxage.', must-revalidate, max-age=0' );
+                                       $wgRequest->response()->header( 'Cache-Control: s-maxage='.$this->mSquidMaxage.', must-revalidate, max-age=0' );
                                }
                        } else {
                                # We do want clients to cache if they can, but they *must* check for updates
                                # on revisiting the page.
                                wfDebug( "$fname: private caching; {$this->mLastModified} **\n", false );
-                               header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
-                               header( "Cache-Control: private, must-revalidate, max-age=0" );
+                               $wgRequest->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
+                               $wgRequest->response()->header( "Cache-Control: private, must-revalidate, max-age=0" );
                        }
-                       if($this->mLastModified) header( "Last-modified: {$this->mLastModified}" );
+                       if($this->mLastModified) $wgRequest->response()->header( "Last-modified: {$this->mLastModified}" );
                } else {
                        wfDebug( "$fname: no caching **\n", false );
 
                        # In general, the absence of a last modified header should be enough to prevent
                        # the client from using its cache. We send a few other things just to make sure.
-                       header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
-                       header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
-                       header( 'Pragma: no-cache' );
+                       $wgRequest->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
+                       $wgRequest->response()->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
+                       $wgRequest->response()->header( 'Pragma: no-cache' );
                }
        }
 
@@ -474,10 +563,11 @@ class OutputPage {
         * Finally, all the text has been munged and accumulated into
         * the object, let's actually output it:
         */
-       function output() {
-               global $wgUser, $wgOutputEncoding;
+       public function output() {
+               global $wgUser, $wgOutputEncoding, $wgRequest;
                global $wgContLanguageCode, $wgDebugRedirects, $wgMimeType;
-               global $wgJsMimeType, $wgStylePath, $wgUseAjax, $wgScriptPath, $wgServer;
+               global $wgJsMimeType, $wgStylePath, $wgUseAjax, $wgAjaxSearch, $wgAjaxWatch;
+               global $wgServer, $wgStyleVersion;
 
                if( $this->mDoNothing ){
                        return;
@@ -487,11 +577,18 @@ class OutputPage {
                $sk = $wgUser->getSkin();
 
                if ( $wgUseAjax ) {
-                       $this->addScript( "<script type=\"{$wgJsMimeType}\">
-                               var wgScriptPath=\"{$wgScriptPath}\";
-                               var wgServer=\"{$wgServer}\";
-                       </script>" );
-                       $this->addScript( "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/ajax.js\"></script>\n" );
+                       $this->addScript( "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/ajax.js?$wgStyleVersion\"></script>\n" );
+
+                       wfRunHooks( 'AjaxAddScript', array( &$this ) );
+
+                       if( $wgAjaxSearch ) {
+                               $this->addScript( "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/ajaxsearch.js?$wgStyleVersion\"></script>\n" );
+                               $this->addScript( "<script type=\"{$wgJsMimeType}\">hookEvent(\"load\", sajax_onload);</script>\n" );
+                       }
+
+                       if( $wgAjaxWatch && $wgUser->isLoggedIn() ) {
+                               $this->addScript( "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/ajaxwatch.js?$wgStyleVersion\"></script>\n" );
+                       }
                }
 
                if ( '' != $this->mRedirect ) {
@@ -502,20 +599,21 @@ class OutputPage {
                        }
                        if( $this->mRedirectCode == '301') {
                                if( !$wgDebugRedirects ) {
-                                       header("HTTP/1.1 {$this->mRedirectCode} Moved Permanently");
+                                       $wgRequest->response()->header("HTTP/1.1 {$this->mRedirectCode} Moved Permanently");
                                }
                                $this->mLastModified = wfTimestamp( TS_RFC2822 );
                        }
 
                        $this->sendCacheControl();
 
+                       $wgRequest->response()->header("Content-Type: text/html; charset=utf-8");
                        if( $wgDebugRedirects ) {
                                $url = htmlspecialchars( $this->mRedirect );
                                print "<html>\n<head>\n<title>Redirect</title>\n</head>\n<body>\n";
                                print "<p>Location: <a href=\"$url\">$url</a></p>\n";
                                print "</body>\n</html>\n";
                        } else {
-                               header( 'Location: '.$this->mRedirect );
+                               $wgRequest->response()->header( 'Location: '.$this->mRedirect );
                        }
                        wfProfileOut( $fname );
                        return;
@@ -572,7 +670,7 @@ class OutputPage {
                        );
 
                        if ( $statusMessage[$this->mStatusCode] )
-                               header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $statusMessage[$this->mStatusCode] );
+                               $wgRequest->response()->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $statusMessage[$this->mStatusCode] );
                }
 
                # Buffer output; final headers may depend on later processing
@@ -581,8 +679,8 @@ class OutputPage {
                # Disable temporary placeholders, so that the skin produces HTML
                $sk->postParseLinkColour( false );
 
-               header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
-               header( 'Content-language: '.$wgContLanguageCode );
+               $wgRequest->response()->header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
+               $wgRequest->response()->header( 'Content-language: '.$wgContLanguageCode );
 
                if ($this->mArticleBodyOnly) {
                        $this->out($this->mBodytext);
@@ -597,7 +695,11 @@ class OutputPage {
                wfProfileOut( $fname );
        }
 
-       function out( $ins ) {
+       /**
+        * @todo document
+        * @param string $ins
+        */
+       public function out( $ins ) {
                global $wgInputEncoding, $wgOutputEncoding, $wgContLang;
                if ( 0 == strcmp( $wgInputEncoding, $wgOutputEncoding ) ) {
                        $outs = $ins;
@@ -608,17 +710,15 @@ class OutputPage {
                print $outs;
        }
 
-       function setEncodings() {
+       /**
+        * @todo document
+        */
+       public static function setEncodings() {
                global $wgInputEncoding, $wgOutputEncoding;
                global $wgUser, $wgContLang;
 
                $wgInputEncoding = strtolower( $wgInputEncoding );
 
-               if( $wgUser->getOption( 'altencoding' ) ) {
-                       $wgContLang->setAltEncoding();
-                       return;
-               }
-
                if ( empty( $_SERVER['HTTP_ACCEPT_CHARSET'] ) ) {
                        $wgOutputEncoding = strtolower( $wgOutputEncoding );
                        return;
@@ -627,22 +727,23 @@ class OutputPage {
        }
 
        /**
-        * Returns a HTML comment with the elapsed time since request.
-        * This method has no side effects.
-        * Use wfReportTime() instead.
+        * Deprecated, use wfReportTime() instead.
         * @return string
         * @deprecated
         */
-       function reportTime() {
+       public function reportTime() {
                $time = wfReportTime();
                return $time;
        }
 
        /**
-        * Produce a "user is blocked" page
+        * Produce a "user is blocked" page.
+        *
+        * @param bool $return Whether to have a "return to $wgTitle" message or not.
+        * @return nothing
         */
-       function blockedPage() {
-               global $wgUser, $wgContLang, $wgTitle;
+       function blockedPage( $return = true ) {
+               global $wgUser, $wgContLang, $wgTitle, $wgLang;
 
                $this->setPageTitle( wfMsg( 'blockedtitle' ) );
                $this->setRobotpolicy( 'noindex,nofollow' );
@@ -659,17 +760,49 @@ class OutputPage {
                }
                $link = '[[' . $wgContLang->getNsText( NS_USER ) . ":{$name}|{$name}]]";
 
-               $this->addWikiText( wfMsg( 'blockedtext', $link, $reason, $ip, $name ) );
+               $blockid = $wgUser->mBlock->mId;
+
+               $blockExpiry = $wgUser->mBlock->mExpiry;
+               if ( $blockExpiry == 'infinity' ) {
+                       // Entry in database (table ipblocks) is 'infinity' but 'ipboptions' uses 'infinite' or 'indefinite'
+                       // Search for localization in 'ipboptions'
+                       $scBlockExpiryOptions = wfMsg( 'ipboptions' );
+                       foreach ( explode( ',', $scBlockExpiryOptions ) as $option ) {
+                               if ( strpos( $option, ":" ) === false )
+                                       continue;
+                               list( $show, $value ) = explode( ":", $option );
+                               if ( $value == 'infinite' || $value == 'indefinite' ) {
+                                       $blockExpiry = $show;
+                                       break;
+                               }
+                       }
+               } else {
+                       $blockExpiry = $wgLang->timeanddate( wfTimestamp( TS_MW, $blockExpiry ), true );
+               }
+
+               if ( $wgUser->mBlock->mAuto ) {
+                       $msg = 'autoblockedtext';
+               } else {
+                       $msg = 'blockedtext';
+               }
+
+               $this->addWikiText( wfMsg( $msg, $link, $reason, $ip, $name, $blockid, $blockExpiry ) );
                
                # Don't auto-return to special pages
-               $return = $wgTitle->getNamespace() > -1 ? $wgTitle->getPrefixedText() : NULL;   
-               $this->returnToMain( false, $return );
+               if( $return ) {
+                       $return = $wgTitle->getNamespace() > -1 ? $wgTitle->getPrefixedText() : NULL;
+                       $this->returnToMain( false, $return );
+               }
        }
 
        /**
-        * Note: these arguments are keys into wfMsg(), not text!
+        * Output a standard error page
+        *
+        * @param string $title Message key for page title
+        * @param string $msg Message key for page text
+        * @param array $params Message parameters
         */
-       function showErrorPage( $title, $msg ) {
+       public function showErrorPage( $title, $msg, $params = array() ) {
                global $wgTitle;
 
                $this->mDebugtext .= 'Original title: ' .
@@ -680,14 +813,17 @@ class OutputPage {
                $this->setArticleRelated( false );
                $this->enableClientCache( false );
                $this->mRedirect = '';
-
                $this->mBodytext = '';
-               $this->addWikiText( wfMsg( $msg ) );
+               
+               array_unshift( $params, $msg );
+               $message = call_user_func_array( 'wfMsg', $params );
+               $this->addWikiText( $message );
+               
                $this->returnToMain( false );
        }
 
-       /** @obsolete */
-       function errorpage( $title, $msg ) {
+       /** @deprecated */
+       public function errorpage( $title, $msg ) {
                throw new ErrorPageError( $title, $msg );
        }
                
@@ -697,7 +833,7 @@ class OutputPage {
         *
         * @param mixed $version The version of MediaWiki needed to use the page
         */
-       function versionRequired( $version ) {
+       public function versionRequired( $version ) {
                $this->setPageTitle( wfMsg( 'versionrequired', $version ) );
                $this->setHTMLTitle( wfMsg( 'versionrequired', $version ) );
                $this->setRobotpolicy( 'noindex,nofollow' );
@@ -710,11 +846,11 @@ class OutputPage {
 
        /**
         * Display an error page noting that a given permission bit is required.
-        * This should generally replace the sysopRequired, developerRequired etc.
+        *
         * @param string $permission key required
         */
-       function permissionRequired( $permission ) {
-               global $wgUser;
+       public function permissionRequired( $permission ) {
+               global $wgGroupPermissions, $wgUser;
 
                $this->setPageTitle( wfMsg( 'badaccess' ) );
                $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
@@ -722,53 +858,61 @@ class OutputPage {
                $this->setArticleRelated( false );
                $this->mBodytext = '';
 
-               $sk = $wgUser->getSkin();
-               $ap = $sk->makeKnownLink( wfMsgForContent( 'administrators' ) );
-               $this->addHTML( wfMsgHtml( 'badaccesstext', $ap, $permission ) );
-               $this->returnToMain();
+               $groups = array();
+               foreach( $wgGroupPermissions as $key => $value ) {
+                       if( isset( $value[$permission] ) && $value[$permission] == true ) {
+                               $groupName = User::getGroupName( $key );
+                               $groupPage = User::getGroupPage( $key );
+                               if( $groupPage ) {
+                                       $skin = $wgUser->getSkin();
+                                       $groups[] = $skin->makeLinkObj( $groupPage, $groupName );
+                               } else {
+                                       $groups[] = $groupName;
+                               }
+                       }
+               }
+               $n = count( $groups );
+               $groups = implode( ', ', $groups );
+               switch( $n ) {
+                       case 0:
+                       case 1:
+                       case 2:
+                               $message = wfMsgHtml( "badaccess-group$n", $groups );
+                               break;
+                       default:
+                               $message = wfMsgHtml( 'badaccess-groups', $groups );
+               }
+               $this->addHtml( $message );
+               $this->returnToMain( false );
        }
 
        /**
+        * Use permissionRequired.
         * @deprecated
         */
-       function sysopRequired() {
-               global $wgUser;
-
-               $this->setPageTitle( wfMsg( 'sysoptitle' ) );
-               $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
-               $this->setRobotpolicy( 'noindex,nofollow' );
-               $this->setArticleRelated( false );
-               $this->mBodytext = '';
-
-               $sk = $wgUser->getSkin();
-               $ap = $sk->makeKnownLink( wfMsgForContent( 'administrators' ), '' );
-               $this->addHTML( wfMsgHtml( 'sysoptext', $ap ) );
-               $this->returnToMain();
+       public function sysopRequired() {
+               throw new MWException( "Call to deprecated OutputPage::sysopRequired() method\n" );
        }
 
        /**
+        * Use permissionRequired.
         * @deprecated
         */
-       function developerRequired() {
-               global $wgUser;
-
-               $this->setPageTitle( wfMsg( 'developertitle' ) );
-               $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
-               $this->setRobotpolicy( 'noindex,nofollow' );
-               $this->setArticleRelated( false );
-               $this->mBodytext = '';
-
-               $sk = $wgUser->getSkin();
-               $ap = $sk->makeKnownLink( wfMsgForContent( 'administrators' ), '' );
-               $this->addHTML( wfMsgHtml( 'developertext', $ap ) );
-               $this->returnToMain();
+       public function developerRequired() {
+               throw new MWException( "Call to deprecated OutputPage::developerRequired() method\n" );
        }
 
        /**
         * Produce the stock "please login to use the wiki" page
         */
-       function loginToUse() {
+       public function loginToUse() {
                global $wgUser, $wgTitle, $wgContLang;
+
+               if( $wgUser->isLoggedIn() ) {
+                       $this->permissionRequired( 'read' );
+                       return;
+               }
+
                $skin = $wgUser->getSkin();
                
                $this->setPageTitle( wfMsg( 'loginreqtitle' ) );
@@ -776,34 +920,57 @@ class OutputPage {
                $this->setRobotPolicy( 'noindex,nofollow' );
                $this->setArticleFlag( false );
                
-               $this->addHtml( wfMsgWikiHtml( 'loginreqpagetext', $skin->loginLink() ) );
+               $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
+               $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $wgTitle->getPrefixedUrl() );
+               $this->addHtml( wfMsgWikiHtml( 'loginreqpagetext', $loginLink ) );
                $this->addHtml( "\n<!--" . $wgTitle->getPrefixedUrl() . "-->" );
                
-               $this->returnToMain( false );
+               # Don't return to the main page if the user can't read it
+               # otherwise we'll end up in a pointless loop
+               $mainPage = Title::newMainPage();
+               if( $mainPage->userCanRead() )
+                       $this->returnToMain( true, $mainPage );
        }
 
-       /** @obsolete */
-       function databaseError( $fname, $sql, $error, $errno ) {
+       /** @deprecated */
+       public function databaseError( $fname, $sql, $error, $errno ) {
                throw new MWException( "OutputPage::databaseError is obsolete\n" );
        }
 
-       function readOnlyPage( $source = null, $protected = false ) {
+       /**
+        * @todo document
+        * @param bool  $protected Is the reason the page can't be reached because it's protected?
+        * @param mixed $source
+        */
+       public function readOnlyPage( $source = null, $protected = false ) {
                global $wgUser, $wgReadOnlyFile, $wgReadOnly, $wgTitle;
+               $skin = $wgUser->getSkin();
 
                $this->setRobotpolicy( 'noindex,nofollow' );
                $this->setArticleRelated( false );
 
                if( $protected ) {
-                       $skin = $wgUser->getSkin();
                        $this->setPageTitle( wfMsg( 'viewsource' ) );
                        $this->setSubtitle( wfMsg( 'viewsourcefor', $skin->makeKnownLinkObj( $wgTitle ) ) );
-                       
+
+                       list( $cascadeSources, /* $restrictions */ ) = $wgTitle->getCascadeProtectionSources();
+
                        # Determine if protection is due to the page being a system message
                        # and show an appropriate explanation
-                       if( $wgTitle->getNamespace() == NS_MEDIAWIKI && !$wgUser->isAllowed( 'editinterface' ) ) {
+                       if( $wgTitle->getNamespace() == NS_MEDIAWIKI ) {
                                $this->addWikiText( wfMsg( 'protectedinterface' ) );
+                       } if ( $cascadeSources && count($cascadeSources) > 0 ) {
+                               $titles = '';
+       
+                               foreach ( $cascadeSources as $title ) {
+                                       $titles .= '* [[:' . $title->getPrefixedText() . "]]\n";
+                               }
+
+                               $notice = wfMsgExt( 'cascadeprotected', array('parsemag'), count($cascadeSources) ) . "\n$titles";
+
+                               $this->addWikiText( $notice );
                        } else {
-                               $this->addWikiText( wfMsg( 'protectedtext' ) );
+                               $this->addWikiText( wfMsg( 'protectedpagetext' ) );
                        }
                } else {
                        $this->setPageTitle( wfMsg( 'readonly' ) );
@@ -816,56 +983,50 @@ class OutputPage {
                }
 
                if( is_string( $source ) ) {
-                       if( strcmp( $source, '' ) == 0 ) {
-                               global $wgTitle;
-                               if ( $wgTitle->getNamespace() == NS_MEDIAWIKI ) {
-                                       $source = wfMsgWeirdKey ( $wgTitle->getText() );
-                               } else {
-                                       $source = wfMsg( $wgUser->isLoggedIn() ? 'noarticletext' : 'noarticletextanon' );
-                               }
-                       }
+                       $this->addWikiText( wfMsg( 'viewsourcetext' ) );
                        $rows = $wgUser->getIntOption( 'rows' );
                        $cols = $wgUser->getIntOption( 'cols' );
-                       
                        $text = "\n<textarea name='wpTextbox1' id='wpTextbox1' cols='$cols' rows='$rows' readonly='readonly'>" .
                                htmlspecialchars( $source ) . "\n</textarea>";
                        $this->addHTML( $text );
                }
+               $article = new Article($wgTitle);
+               $this->addHTML( $skin->formatTemplates($article->getUsedTemplates()) );
 
                $this->returnToMain( false );
        }
 
-       /** @obsolete */
-       function fatalError( $message ) { 
+       /** @deprecated */
+       public function fatalError( $message ) {
                throw new FatalError( $message ); 
        }
        
-       /** @obsolete */
-       function unexpectedValueError( $name, $val ) {
+       /** @deprecated */
+       public function unexpectedValueError( $name, $val ) {
                throw new FatalError( wfMsg( 'unexpected', $name, $val ) );
        }
 
-       /** @obsolete */
-       function fileCopyError( $old, $new ) {
+       /** @deprecated */
+       public function fileCopyError( $old, $new ) {
                throw new FatalError( wfMsg( 'filecopyerror', $old, $new ) );
        }
 
-       /** @obsolete */
-       function fileRenameError( $old, $new ) {
+       /** @deprecated */
+       public function fileRenameError( $old, $new ) {
                throw new FatalError( wfMsg( 'filerenameerror', $old, $new ) );
        }
 
-       /** @obsolete */
-       function fileDeleteError( $name ) {
+       /** @deprecated */
+       public function fileDeleteError( $name ) {
                throw new FatalError( wfMsg( 'filedeleteerror', $name ) );
        }
 
-       /** @obsolete */
-       function fileNotFoundError( $name ) {
+       /** @deprecated */
+       public function fileNotFoundError( $name ) {
                throw new FatalError( wfMsg( 'filenotfound', $name ) );
        }
 
-       function showFatalError( $message ) {
+       public function showFatalError( $message ) {
                $this->setPageTitle( wfMsg( "internalerror" ) );
                $this->setRobotpolicy( "noindex,nofollow" );
                $this->setArticleRelated( false );
@@ -874,23 +1035,23 @@ class OutputPage {
                $this->mBodytext = $message;
        }
 
-       function showUnexpectedValueError( $name, $val ) {
+       public function showUnexpectedValueError( $name, $val ) {
                $this->showFatalError( wfMsg( 'unexpected', $name, $val ) );
        }
 
-       function showFileCopyError( $old, $new ) {
+       public function showFileCopyError( $old, $new ) {
                $this->showFatalError( wfMsg( 'filecopyerror', $old, $new ) );
        }
 
-       function showFileRenameError( $old, $new ) {
+       public function showFileRenameError( $old, $new ) {
                $this->showFatalError( wfMsg( 'filerenameerror', $old, $new ) );
        }
 
-       function showFileDeleteError( $name ) {
+       public function showFileDeleteError( $name ) {
                $this->showFatalError( wfMsg( 'filedeleteerror', $name ) );
        }
 
-       function showFileNotFoundError( $name ) {
+       public function showFileNotFoundError( $name ) {
                $this->showFatalError( wfMsg( 'filenotfound', $name ) );
        }
 
@@ -899,23 +1060,31 @@ class OutputPage {
         * @param $auto automatically redirect the user after 10 seconds
         * @param $returnto page title to return to. Default is Main Page.
         */
-       function returnToMain( $auto = true, $returnto = NULL ) {
+       public function returnToMain( $auto = true, $returnto = NULL ) {
                global $wgUser, $wgOut, $wgRequest;
-
+               
                if ( $returnto == NULL ) {
                        $returnto = $wgRequest->getText( 'returnto' );
                }
-               $returnto = htmlspecialchars( $returnto );
+               
+               if ( '' === $returnto ) {
+                       $returnto = Title::newMainPage();
+               }
 
-               $sk = $wgUser->getSkin();
-               if ( '' == $returnto ) {
-                       $returnto = wfMsgForContent( 'mainpage' );
+               if ( is_object( $returnto ) ) {
+                       $titleObj = $returnto;
+               } else {
+                       $titleObj = Title::newFromText( $returnto );
                }
-               $link = $sk->makeLinkObj( Title::newFromText( $returnto ), '' );
+               if ( !is_object( $titleObj ) ) {
+                       $titleObj = Title::newMainPage();
+               }
+
+               $sk = $wgUser->getSkin();
+               $link = $sk->makeLinkObj( $titleObj, '' );
 
                $r = wfMsg( 'returnto', $link );
                if ( $auto ) {
-                       $titleObj = Title::newFromText( $returnto );
                        $wgOut->addMeta( 'http:Refresh', '10;url=' . $titleObj->escapeFullURL() );
                }
                $wgOut->addHTML( "\n<p>$r</p>\n" );
@@ -924,8 +1093,10 @@ class OutputPage {
        /**
         * This function takes the title (first item of mGoodLinks), categories, existing and broken links for the page
         * and uses the first 10 of them for META keywords
+        *
+        * @param ParserOutput &$parserOutput
         */
-       function addKeywords( &$parserOutput ) {
+       private function addKeywords( &$parserOutput ) {
                global $wgTitle;
                $this->addKeyword( $wgTitle->getPrefixedText() );
                $count = 1;
@@ -933,8 +1104,8 @@ class OutputPage {
                if ( !is_array( $links2d ) ) {
                        return;
                }
-               foreach ( $links2d as $ns => $dbkeys ) {
-                       foreach( $dbkeys as $dbkey => $id ) {
+               foreach ( $links2d as $dbkeys ) {
+                       foreach( $dbkeys as $dbkey => $unused ) {
                                $this->addKeyword( $dbkey );
                                if ( ++$count > 10 ) {
                                        break 2;
@@ -944,12 +1115,12 @@ class OutputPage {
        }
 
        /**
-        * @access private
-        * @return string
+        * @return string The doctype, opening <html>, and head element.
         */
-       function headElement() {
+       public function headElement() {
                global $wgDocType, $wgDTD, $wgContLanguageCode, $wgOutputEncoding, $wgMimeType;
-               global $wgUser, $wgContLang, $wgUseTrackbacks, $wgTitle;
+               global $wgXhtmlDefaultNamespace, $wgXhtmlNamespaces;
+               global $wgUser, $wgContLang, $wgUseTrackbacks, $wgTitle, $wgStyleVersion;
 
                if( $wgMimeType == 'text/xml' || $wgMimeType == 'application/xhtml+xml' || $wgMimeType == 'application/xml' ) {
                        $ret = "<?xml version=\"1.0\" encoding=\"$wgOutputEncoding\" ?>\n";
@@ -964,7 +1135,11 @@ class OutputPage {
                }
 
                $rtl = $wgContLang->isRTL() ? " dir='RTL'" : '';
-               $ret .= "<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"$wgContLanguageCode\" lang=\"$wgContLanguageCode\" $rtl>\n";
+               $ret .= "<html xmlns=\"{$wgXhtmlDefaultNamespace}\" ";
+               foreach($wgXhtmlNamespaces as $tag => $ns) {
+                       $ret .= "xmlns:{$tag}=\"{$ns}\" ";
+               }
+               $ret .= "xml:lang=\"$wgContLanguageCode\" lang=\"$wgContLanguageCode\" $rtl>\n";
                $ret .= "<head>\n<title>" . htmlspecialchars( $this->getHTMLTitle() ) . "</title>\n";
                array_push( $this->mMetatags, array( "http:Content-type", "$wgMimeType; charset={$wgOutputEncoding}" ) );
 
@@ -975,13 +1150,14 @@ class OutputPage {
                } else {
                        $media = "media='print'";
                }
-               $printsheet = htmlspecialchars( "$wgStylePath/common/wikiprintable.css" );
+               $printsheet = htmlspecialchars( "$wgStylePath/common/wikiprintable.css?$wgStyleVersion" );
                $ret .= "<link rel='stylesheet' type='text/css' $media href='$printsheet' />\n";
 
                $sk = $wgUser->getSkin();
-               $ret .= $sk->getHeadScripts();
+               $ret .= $sk->getHeadScripts( $this->mAllowUserJs );
                $ret .= $this->mScripts;
                $ret .= $sk->getUserStyles();
+               $ret .= $this->getHeadItems();
 
                if ($wgUseTrackbacks && $this->isArticleRelated())
                        $ret .= $wgTitle->trackbackRDF();
@@ -990,7 +1166,10 @@ class OutputPage {
                return $ret;
        }
 
-       function getHeadLinks() {
+       /**
+        * @return string HTML tag links to be put in the header.
+        */
+       public function getHeadLinks() {
                global $wgRequest;
                $ret = '';
                foreach ( $this->mMetatags as $tag ) {
@@ -1015,11 +1194,11 @@ class OutputPage {
                                "/<.*?>/" => '',
                                "/_/" => ' '
                        );
-                       $ret .= "<meta name=\"keywords\" content=\"" .
+                       $ret .= "\t\t<meta name=\"keywords\" content=\"" .
                          htmlspecialchars(preg_replace(array_keys($strip), array_values($strip),implode( ",", $this->mKeywords ))) . "\" />\n";
                }
                foreach ( $this->mLinktags as $tag ) {
-                       $ret .= '<link';
+                       $ret .= "\t\t<link";
                        foreach( $tag as $attr => $val ) {
                                $ret .= " $attr=\"" . htmlspecialchars( $val ) . "\"";
                        }
@@ -1030,7 +1209,7 @@ class OutputPage {
                        $link = $wgRequest->escapeAppendQuery( 'feed=rss' );
                        $ret .= "<link rel='alternate' type='application/rss+xml' title='RSS 2.0' href='$link' />\n";
                        $link = $wgRequest->escapeAppendQuery( 'feed=atom' );
-                       $ret .= "<link rel='alternate' type='application/atom+xml' title='Atom 0.3' href='$link' />\n";
+                       $ret .= "<link rel='alternate' type='application/atom+xml' title='Atom 1.0' href='$link' />\n";
                }
 
                return $ret;
@@ -1040,9 +1219,8 @@ class OutputPage {
         * Turn off regular page output and return an error reponse
         * for when rate limiting has triggered.
         * @todo i18n
-        * @access public
         */
-       function rateLimited() {
+       public function rateLimited() {
                global $wgOut;
                $wgOut->disable();
                wfHttpError( 500, 'Internal Server Error',
@@ -1055,9 +1233,24 @@ class OutputPage {
         *
         * @return bool True if the parser output instructs us to add one
         */
-       function showNewSectionLink() {
+       public function showNewSectionLink() {
                return $this->mNewSectionLink;
        }
-
+       
+       /**
+        * Show a warning about slave lag
+        *
+        * If the lag is higher than 30 seconds, then the warning is
+        * a bit more obvious
+        *
+        * @param int $lag Slave lag
+        */
+       public function showLagWarning( $lag ) {
+               $message = $lag >= 30 ? 'lag-warn-high' : 'lag-warn-normal';
+               $warning = wfMsgHtml( $message, htmlspecialchars( $lag ) );
+               $this->addHtml( "<div class=\"mw-{$message}\">\n{$warning}\n</div>\n" );
+       }
+       
 }
-?>
+
+?>
\ No newline at end of file