includes/OutputPage.php

   1 <?php
   2 if ( ! defined( 'MEDIAWIKI' ) )
   3         die( 1 );
   4 /**
   5  */
   6
   7 /**
   8  * @todo document
   9  */
  10 class OutputPage {
  11         var $mMetatags, $mKeywords;
  12         var $mLinktags, $mPagetitle, $mBodytext, $mDebugtext;
  13         var $mHTMLtitle, $mRobotpolicy, $mIsarticle, $mPrintable;
  14         var $mSubtitle, $mRedirect, $mStatusCode;
  15         var $mLastModified, $mETag, $mCategoryLinks;
  16         var $mScripts, $mLinkColours, $mPageLinkTitle;
  17
  18         var $mSuppressQuickbar;
  19         var $mOnloadHandler;
  20         var $mDoNothing;
  21         var $mContainsOldMagic, $mContainsNewMagic;
  22         var $mIsArticleRelated;
  23         protected $mParserOptions; // lazy initialised, use parserOptions()
  24         var $mShowFeedLinks = false;
  25         var $mEnableClientCache = true;
  26         var $mArticleBodyOnly = false;
  27
  28         var $mNewSectionLink = false;
  29         var $mNoGallery = false;
  30
  31         /**
  32          * Constructor
  33          * Initialise private variables
  34          */
  35         function __construct() {
  36                 $this->mMetatags = $this->mKeywords = $this->mLinktags = array();
  37                 $this->mHTMLtitle = $this->mPagetitle = $this->mBodytext =
  38                 $this->mRedirect = $this->mLastModified =
  39                 $this->mSubtitle = $this->mDebugtext = $this->mRobotpolicy =
  40                 $this->mOnloadHandler = $this->mPageLinkTitle = '';
  41                 $this->mIsArticleRelated = $this->mIsarticle = $this->mPrintable = true;
  42                 $this->mSuppressQuickbar = $this->mPrintable = false;
  43                 $this->mLanguageLinks = array();
  44                 $this->mCategoryLinks = array();
  45                 $this->mDoNothing = false;
  46                 $this->mContainsOldMagic = $this->mContainsNewMagic = 0;
  47                 $this->mParserOptions = null;
  48                 $this->mSquidMaxage = 0;
  49                 $this->mScripts = '';
  50                 $this->mETag = false;
  51                 $this->mRevisionId = null;
  52                 $this->mNewSectionLink = false;
  53         }
  54
  55         public function redirect( $url, $responsecode = '302' ) {
  56                 # Strip newlines as a paranoia check for header injection in PHP<5.1.2
  57                 $this->mRedirect = str_replace( "\n", '', $url );
  58                 $this->mRedirectCode = $responsecode;
  59         }
  60
  61         /**
  62          * Set the HTTP status code to send with the output.
  63          *
  64          * @param int $statusCode
  65          * @return nothing
  66          */
  67         function setStatusCode( $statusCode ) { $this->mStatusCode = $statusCode; }
  68
  69         # To add an http-equiv meta tag, precede the name with "http:"
  70         function addMeta( $name, $val ) { array_push( $this->mMetatags, array( $name, $val ) ); }
  71         function addKeyword( $text ) { array_push( $this->mKeywords, $text ); }
  72         function addScript( $script ) { $this->mScripts .= "\t\t".$script; }
  73
  74         /**
  75          * Add a self-contained script tag with the given contents
  76          * @param string $script JavaScript text, no <script> tags
  77          */
  78         function addInlineScript( $script ) {
  79                 global $wgJsMimeType;
  80                 $this->mScripts .= "<script type=\"$wgJsMimeType\"><!--\n$script\n--></script>";
  81         }
  82
  83         function getScript() { return $this->mScripts; }
  84
  85         function setETag($tag) { $this->mETag = $tag; }
  86         function setArticleBodyOnly($only) { $this->mArticleBodyOnly = $only; }
  87         function getArticleBodyOnly($only) { return $this->mArticleBodyOnly; }
  88
  89         function addLink( $linkarr ) {
  90                 # $linkarr should be an associative array of attributes. We'll escape on output.
  91                 array_push( $this->mLinktags, $linkarr );
  92         }
  93
  94         function addMetadataLink( $linkarr ) {
  95                 # note: buggy CC software only reads first "meta" link
  96                 static $haveMeta = false;
  97                 $linkarr['rel'] = ($haveMeta) ? 'alternate meta' : 'meta';
  98                 $this->addLink( $linkarr );
  99                 $haveMeta = true;
 100         }
 101
 102         /**
 103          * checkLastModified tells the client to use the client-cached page if
 104          * possible. If sucessful, the OutputPage is disabled so that
 105          * any future call to OutputPage->output() have no effect.
 106          *
 107          * @return bool True iff cache-ok headers was sent.
 108          */
 109         function checkLastModified ( $timestamp ) {
 110                 global $wgCachePages, $wgCacheEpoch, $wgUser, $wgRequest;
 111                 $fname = 'OutputPage::checkLastModified';
 112
 113                 if ( !$timestamp || $timestamp == '19700101000000' ) {
 114                         wfDebug( "$fname: CACHE DISABLED, NO TIMESTAMP\n" );
 115                         return;
 116                 }
 117                 if( !$wgCachePages ) {
 118                         wfDebug( "$fname: CACHE DISABLED\n", false );
 119                         return;
 120                 }
 121                 if( $wgUser->getOption( 'nocache' ) ) {
 122                         wfDebug( "$fname: USER DISABLED CACHE\n", false );
 123                         return;
 124                 }
 125
 126                 $timestamp=wfTimestamp(TS_MW,$timestamp);
 127                 $lastmod = wfTimestamp( TS_RFC2822, max( $timestamp, $wgUser->mTouched, $wgCacheEpoch ) );
 128
 129                 if( !empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
 130                         # IE sends sizes after the date like this:
 131                         # Wed, 20 Aug 2003 06:51:19 GMT; length=5202
 132                         # this breaks strtotime().
 133                         $modsince = preg_replace( '/;.*$/', '', $_SERVER["HTTP_IF_MODIFIED_SINCE"] );
 134                         $modsinceTime = strtotime( $modsince );
 135                         $ismodsince = wfTimestamp( TS_MW, $modsinceTime ? $modsinceTime : 1 );
 136                         wfDebug( "$fname: -- client send If-Modified-Since: " . $modsince . "\n", false );
 137                         wfDebug( "$fname: --  we might send Last-Modified : $lastmod\n", false );
 138                         if( ($ismodsince >= $timestamp ) && $wgUser->validateCache( $ismodsince ) && $ismodsince >= $wgCacheEpoch ) {
 139                                 # Make sure you're in a place you can leave when you call us!
 140                                 $wgRequest->response()->header( "HTTP/1.0 304 Not Modified" );
 141                                 $this->mLastModified = $lastmod;
 142                                 $this->sendCacheControl();
 143                                 wfDebug( "$fname: CACHED client: $ismodsince ; user: $wgUser->mTouched ; page: $timestamp ; site $wgCacheEpoch\n", false );
 144                                 $this->disable();
 145
 146                                 // Don't output a compressed blob when using ob_gzhandler;
 147                                 // it's technically against HTTP spec and seems to confuse
 148                                 // Firefox when the response gets split over two packets.
 149                                 wfClearOutputBuffers();
 150
 151                                 return true;
 152                         } else {
 153                                 wfDebug( "$fname: READY  client: $ismodsince ; user: $wgUser->mTouched ; page: $timestamp ; site $wgCacheEpoch\n", false );
 154                                 $this->mLastModified = $lastmod;
 155                         }
 156                 } else {
 157                         wfDebug( "$fname: client did not send If-Modified-Since header\n", false );
 158                         $this->mLastModified = $lastmod;
 159                 }
 160         }
 161
 162         function getPageTitleActionText () {
 163                 global $action;
 164                 switch($action) {
 165                         case 'edit':
 166                         case 'delete':
 167                         case 'protect':
 168                         case 'unprotect':
 169                         case 'watch':
 170                         case 'unwatch':
 171                                 // Display title is already customized
 172                                 return '';
 173                         case 'history':
 174                                 return wfMsg('history_short');
 175                         case 'submit':
 176                                 // FIXME: bug 2735; not correct for special pages etc
 177                                 return wfMsg('preview');
 178                         case 'info':
 179                                 return wfMsg('info_short');
 180                         default:
 181                                 return '';
 182                 }
 183         }
 184
 185         public function setRobotpolicy( $str ) { $this->mRobotpolicy = $str; }
 186         public function setHTMLTitle( $name ) {$this->mHTMLtitle = $name; }
 187         public function setPageTitle( $name ) {
 188                 global $action, $wgContLang;
 189                 $name = $wgContLang->convert($name, true);
 190                 $this->mPagetitle = $name;
 191                 if(!empty($action)) {
 192                         $taction =  $this->getPageTitleActionText();
 193                         if( !empty( $taction ) ) {
 194                                 $name .= ' - '.$taction;
 195                         }
 196                 }
 197
 198                 $this->setHTMLTitle( wfMsg( 'pagetitle', $name ) );
 199         }
 200         public function getHTMLTitle() { return $this->mHTMLtitle; }
 201         public function getPageTitle() { return $this->mPagetitle; }
 202         public function setSubtitle( $str ) { $this->mSubtitle = /*$this->parse(*/$str/*)*/; } // @bug 2514
 203         public function getSubtitle() { return $this->mSubtitle; }
 204         public function isArticle() { return $this->mIsarticle; }
 205         public function setPrintable() { $this->mPrintable = true; }
 206         public function isPrintable() { return $this->mPrintable; }
 207         public function setSyndicated( $show = true ) { $this->mShowFeedLinks = $show; }
 208         public function isSyndicated() { return $this->mShowFeedLinks; }
 209         public function setOnloadHandler( $js ) { $this->mOnloadHandler = $js; }
 210         public function getOnloadHandler() { return $this->mOnloadHandler; }
 211         public function disable() { $this->mDoNothing = true; }
 212
 213         public function setArticleRelated( $v ) {
 214                 $this->mIsArticleRelated = $v;
 215                 if ( !$v ) {
 216                         $this->mIsarticle = false;
 217                 }
 218         }
 219         public function setArticleFlag( $v ) {
 220                 $this->mIsarticle = $v;
 221                 if ( $v ) {
 222                         $this->mIsArticleRelated = $v;
 223                 }
 224         }
 225
 226         public function isArticleRelated() { return $this->mIsArticleRelated; }
 227
 228         public function getLanguageLinks() { return $this->mLanguageLinks; }
 229         public function addLanguageLinks($newLinkArray) {
 230                 $this->mLanguageLinks += $newLinkArray;
 231         }
 232         public function setLanguageLinks($newLinkArray) {
 233                 $this->mLanguageLinks = $newLinkArray;
 234         }
 235
 236         public function getCategoryLinks() {
 237                 return $this->mCategoryLinks;
 238         }
 239
 240         /**
 241          * Add an array of categories, with names in the keys
 242          */
 243         public function addCategoryLinks($categories) {
 244                 global $wgUser, $wgContLang;
 245
 246                 if ( !is_array( $categories ) ) {
 247                         return;
 248                 }
 249                 # Add the links to the link cache in a batch
 250                 $arr = array( NS_CATEGORY => $categories );
 251                 $lb = new LinkBatch;
 252                 $lb->setArray( $arr );
 253                 $lb->execute();
 254
 255                 $sk = $wgUser->getSkin();
 256                 foreach ( $categories as $category => $unused ) {
 257                         $title = Title::makeTitleSafe( NS_CATEGORY, $category );
 258                         $text = $wgContLang->convertHtml( $title->getText() );
 259                         $this->mCategoryLinks[] = $sk->makeLinkObj( $title, $text );
 260                 }
 261         }
 262
 263         public function setCategoryLinks($categories) {
 264                 $this->mCategoryLinks = array();
 265                 $this->addCategoryLinks($categories);
 266         }
 267
 268         public function suppressQuickbar() { $this->mSuppressQuickbar = true; }
 269         public function isQuickbarSuppressed() { return $this->mSuppressQuickbar; }
 270
 271         public function addHTML( $text ) { $this->mBodytext .= $text; }
 272         public function clearHTML() { $this->mBodytext = ''; }
 273         public function getHTML() { return $this->mBodytext; }
 274         public function debug( $text ) { $this->mDebugtext .= $text; }
 275
 276         /* @deprecated */
 277         public function setParserOptions( $options ) {
 278                 return $this->parserOptions( $options );
 279         }
 280
 281         public function parserOptions( $options = null ) {
 282                 if ( !$this->mParserOptions ) {
 283                         $this->mParserOptions = new ParserOptions;
 284                 }
 285                 return wfSetVar( $this->mParserOptions, $options );
 286         }
 287
 288         /**
 289          * Set the revision ID which will be seen by the wiki text parser
 290          * for things such as embedded {{REVISIONID}} variable use.
 291          * @param mixed $revid an integer, or NULL
 292          * @return mixed previous value
 293          */
 294         public function setRevisionId( $revid ) {
 295                 $val = is_null( $revid ) ? null : intval( $revid );
 296                 return wfSetVar( $this->mRevisionId, $val );
 297         }
 298
 299         /**
 300          * Convert wikitext to HTML and add it to the buffer
 301          * Default assumes that the current page title will
 302          * be used.
 303          *
 304          * @param string $text
 305          * @param bool   $linestart
 306          */
 307         public function addWikiText( $text, $linestart = true ) {
 308                 global $wgTitle;
 309                 $this->addWikiTextTitle($text, $wgTitle, $linestart);
 310         }
 311
 312         public function addWikiTextWithTitle($text, &$title, $linestart = true) {
 313                 $this->addWikiTextTitle($text, $title, $linestart);
 314         }
 315
 316         function addWikiTextTitleTidy($text, &$title, $linestart = true) {
 317                 $this->addWikiTextTitle( $text, $title, $linestart, true );
 318         }
 319
 320         public function addWikiTextTitle($text, &$title, $linestart, $tidy = false) {
 321                 global $wgParser;
 322
 323                 $fname = 'OutputPage:addWikiTextTitle';
 324                 wfProfileIn($fname);
 325
 326                 wfIncrStats('pcache_not_possible');
 327
 328                 $popts = $this->parserOptions();
 329                 $popts->setTidy($tidy);
 330
 331                 $parserOutput = $wgParser->parse( $text, $title, $popts,
 332                         $linestart, true, $this->mRevisionId );
 333
 334                 $this->addParserOutput( $parserOutput );
 335
 336                 wfProfileOut($fname);
 337         }
 338
 339         /**
 340          * @todo document
 341          * @param ParserOutput object &$parserOutput
 342          */
 343         public function addParserOutputNoText( &$parserOutput ) {
 344                 $this->mLanguageLinks += $parserOutput->getLanguageLinks();
 345                 $this->addCategoryLinks( $parserOutput->getCategories() );
 346                 $this->mNewSectionLink = $parserOutput->getNewSection();
 347                 $this->addKeywords( $parserOutput );
 348                 if ( $parserOutput->getCacheTime() == -1 ) {
 349                         $this->enableClientCache( false );
 350                 }
 351                 if ( $parserOutput->mHTMLtitle != "" ) {
 352                         $this->mPagetitle = $parserOutput->mHTMLtitle ;
 353                 }
 354                 if ( $parserOutput->mSubtitle != '' ) {
 355                         $this->mSubtitle .= $parserOutput->mSubtitle ;
 356                 }
 357                 $this->mNoGallery = $parserOutput->getNoGallery();
 358                 wfRunHooks( 'OutputPageParserOutput', array( &$this, $parserOutput ) );
 359         }
 360
 361         /**
 362          * @todo document
 363          * @param ParserOutput &$parserOutput
 364          */
 365         function addParserOutput( &$parserOutput ) {
 366                 $this->addParserOutputNoText( $parserOutput );
 367                 $text = $parserOutput->getText();
 368                 wfRunHooks( 'OutputPageBeforeHTML',array( &$this, &$text ) );
 369                 $this->addHTML( $text );
 370         }
 371
 372         /**
 373          * Add wikitext to the buffer, assuming that this is the primary text for a page view
 374          * Saves the text into the parser cache if possible.
 375          *
 376          * @param string  $text
 377          * @param Article $article
 378          * @param bool    $cache
 379          * @deprecated Use Article::outputWikitext
 380          */
 381         public function addPrimaryWikiText( $text, $article, $cache = true ) {
 382                 global $wgParser, $wgUser;
 383
 384                 $popts = $this->parserOptions();
 385                 $popts->setTidy(true);
 386                 $parserOutput = $wgParser->parse( $text, $article->mTitle,
 387                         $popts, true, true, $this->mRevisionId );
 388                 $popts->setTidy(false);
 389                 if ( $cache && $article && $parserOutput->getCacheTime() != -1 ) {
 390                         $parserCache =& ParserCache::singleton();
 391                         $parserCache->save( $parserOutput, $article, $wgUser );
 392                 }
 393
 394                 $this->addParserOutput( $parserOutput );
 395         }
 396
 397         /**
 398          * @deprecated use addWikiTextTidy()
 399          */
 400         public function addSecondaryWikiText( $text, $linestart = true ) {
 401                 global $wgTitle;
 402                 $this->addWikiTextTitleTidy($text, $wgTitle, $linestart);
 403         }
 404
 405         /**
 406          * Add wikitext with tidy enabled
 407          */
 408         public function addWikiTextTidy(  $text, $linestart = true ) {
 409                 global $wgTitle;
 410                 $this->addWikiTextTitleTidy($text, $wgTitle, $linestart);
 411         }
 412
 413
 414         /**
 415          * Add the output of a QuickTemplate to the output buffer
 416          *
 417          * @param QuickTemplate $template
 418          */
 419         public function addTemplate( &$template ) {
 420                 ob_start();
 421                 $template->execute();
 422                 $this->addHTML( ob_get_contents() );
 423                 ob_end_clean();
 424         }
 425
 426         /**
 427          * Parse wikitext and return the HTML.
 428          *
 429          * @param string $text
 430          * @param bool   $linestart Is this the start of a line?
 431          * @param bool   $interface ??
 432          */
 433         public function parse( $text, $linestart = true, $interface = false ) {
 434                 global $wgParser, $wgTitle;
 435                 $popts = $this->parserOptions();
 436                 if ( $interface) { $popts->setInterfaceMessage(true); }
 437                 $parserOutput = $wgParser->parse( $text, $wgTitle, $popts,
 438                         $linestart, true, $this->mRevisionId );
 439                 if ( $interface) { $popts->setInterfaceMessage(false); }
 440                 return $parserOutput->getText();
 441         }
 442
 443         /**
 444          * @param Article $article
 445          * @param User    $user
 446          *
 447          * @return bool True if successful, else false.
 448          */
 449         public function tryParserCache( &$article, $user ) {
 450                 $parserCache =& ParserCache::singleton();
 451                 $parserOutput = $parserCache->get( $article, $user );
 452                 if ( $parserOutput !== false ) {
 453                         $this->addParserOutput( $parserOutput );
 454                         return true;
 455                 } else {
 456                         return false;
 457                 }
 458         }
 459
 460         /**
 461          * @param int $maxage Maximum cache time on the Squid, in seconds.
 462          */
 463         public function setSquidMaxage( $maxage ) {
 464                 $this->mSquidMaxage = $maxage;
 465         }
 466
 467         /**
 468          * Use enableClientCache(false) to force it to send nocache headers
 469          * @param $state ??
 470          */
 471         public function enableClientCache( $state ) {
 472                 return wfSetVar( $this->mEnableClientCache, $state );
 473         }
 474
 475         function uncacheableBecauseRequestvars() {
 476                 global $wgRequest;
 477                 return  $wgRequest->getText('useskin', false) === false
 478                         && $wgRequest->getText('uselang', false) === false;
 479         }
 480
 481         public function sendCacheControl() {
 482                 global $wgUseSquid, $wgUseESI, $wgUseETag, $wgSquidMaxage, $wgRequest;
 483                 $fname = 'OutputPage::sendCacheControl';
 484
 485                 if ($wgUseETag && $this->mETag)
 486                         $wgRequest->response()->header("ETag: $this->mETag");
 487
 488                 # don't serve compressed data to clients who can't handle it
 489                 # maintain different caches for logged-in users and non-logged in ones
 490                 $wgRequest->response()->header( 'Vary: Accept-Encoding, Cookie' );
 491                 if( !$this->uncacheableBecauseRequestvars() && $this->mEnableClientCache ) {
 492                         if( $wgUseSquid && session_id() == '' &&
 493                           ! $this->isPrintable() && $this->mSquidMaxage != 0 )
 494                         {
 495                                 if ( $wgUseESI ) {
 496                                         # We'll purge the proxy cache explicitly, but require end user agents
 497                                         # to revalidate against the proxy on each visit.
 498                                         # Surrogate-Control controls our Squid, Cache-Control downstream caches
 499                                         wfDebug( "$fname: proxy caching with ESI; {$this->mLastModified} **\n", false );
 500                                         # start with a shorter timeout for initial testing
 501                                         # header( 'Surrogate-Control: max-age=2678400+2678400, content="ESI/1.0"');
 502                                         $wgRequest->response()->header( 'Surrogate-Control: max-age='.$wgSquidMaxage.'+'.$this->mSquidMaxage.', content="ESI/1.0"');
 503                                         $wgRequest->response()->header( 'Cache-Control: s-maxage=0, must-revalidate, max-age=0' );
 504                                 } else {
 505                                         # We'll purge the proxy cache for anons explicitly, but require end user agents
 506                                         # to revalidate against the proxy on each visit.
 507                                         # IMPORTANT! The Squid needs to replace the Cache-Control header with
 508                                         # Cache-Control: s-maxage=0, must-revalidate, max-age=0
 509                                         wfDebug( "$fname: local proxy caching; {$this->mLastModified} **\n", false );
 510                                         # start with a shorter timeout for initial testing
 511                                         # header( "Cache-Control: s-maxage=2678400, must-revalidate, max-age=0" );
 512                                         $wgRequest->response()->header( 'Cache-Control: s-maxage='.$this->mSquidMaxage.', must-revalidate, max-age=0' );
 513                                 }
 514                         } else {
 515                                 # We do want clients to cache if they can, but they *must* check for updates
 516                                 # on revisiting the page.
 517                                 wfDebug( "$fname: private caching; {$this->mLastModified} **\n", false );
 518                                 $wgRequest->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
 519                                 $wgRequest->response()->header( "Cache-Control: private, must-revalidate, max-age=0" );
 520                         }
 521                         if($this->mLastModified) $wgRequest->response()->header( "Last-modified: {$this->mLastModified}" );
 522                 } else {
 523                         wfDebug( "$fname: no caching **\n", false );
 524
 525                         # In general, the absence of a last modified header should be enough to prevent
 526                         # the client from using its cache. We send a few other things just to make sure.
 527                         $wgRequest->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
 528                         $wgRequest->response()->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
 529                         $wgRequest->response()->header( 'Pragma: no-cache' );
 530                 }
 531         }
 532
 533         /**
 534          * Finally, all the text has been munged and accumulated into
 535          * the object, let's actually output it:
 536          */
 537         public function output() {
 538                 global $wgUser, $wgOutputEncoding, $wgRequest;
 539                 global $wgContLanguageCode, $wgDebugRedirects, $wgMimeType;
 540                 global $wgJsMimeType, $wgStylePath, $wgUseAjax, $wgAjaxSearch, $wgAjaxWatch;
 541                 global $wgServer, $wgStyleVersion;
 542
 543                 if( $this->mDoNothing ){
 544                         return;
 545                 }
 546                 $fname = 'OutputPage::output';
 547                 wfProfileIn( $fname );
 548                 $sk = $wgUser->getSkin();
 549
 550                 if ( $wgUseAjax ) {
 551                         $this->addScript( "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/ajax.js?$wgStyleVersion\"></script>\n" );
 552
 553                         wfRunHooks( 'AjaxAddScript', array( &$this ) );
 554
 555                         if( $wgAjaxSearch ) {
 556                                 $this->addScript( "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/ajaxsearch.js?$wgStyleVersion\"></script>\n" );
 557                                 $this->addScript( "<script type=\"{$wgJsMimeType}\">hookEvent(\"load\", sajax_onload);</script>\n" );
 558                         }
 559
 560                         if( $wgAjaxWatch && $wgUser->isLoggedIn() ) {
 561                                 $this->addScript( "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/ajaxwatch.js?$wgStyleVersion\"></script>\n" );
 562                         }
 563                 }
 564
 565                 if ( '' != $this->mRedirect ) {
 566                         if( substr( $this->mRedirect, 0, 4 ) != 'http' ) {
 567                                 # Standards require redirect URLs to be absolute
 568                                 global $wgServer;
 569                                 $this->mRedirect = $wgServer . $this->mRedirect;
 570                         }
 571                         if( $this->mRedirectCode == '301') {
 572                                 if( !$wgDebugRedirects ) {
 573                                         $wgRequest->response()->header("HTTP/1.1 {$this->mRedirectCode} Moved Permanently");
 574                                 }
 575                                 $this->mLastModified = wfTimestamp( TS_RFC2822 );
 576                         }
 577
 578                         $this->sendCacheControl();
 579
 580                         $wgRequest->response()->header("Content-Type: text/html; charset=utf-8");
 581                         if( $wgDebugRedirects ) {
 582                                 $url = htmlspecialchars( $this->mRedirect );
 583                                 print "<html>\n<head>\n<title>Redirect</title>\n</head>\n<body>\n";
 584                                 print "<p>Location: <a href=\"$url\">$url</a></p>\n";
 585                                 print "</body>\n</html>\n";
 586                         } else {
 587                                 $wgRequest->response()->header( 'Location: '.$this->mRedirect );
 588                         }
 589                         wfProfileOut( $fname );
 590                         return;
 591                 }
 592                 elseif ( $this->mStatusCode )
 593                 {
 594                         $statusMessage = array(
 595                                 100 => 'Continue',
 596                                 101 => 'Switching Protocols',
 597                                 102 => 'Processing',
 598                                 200 => 'OK',
 599                                 201 => 'Created',
 600                                 202 => 'Accepted',
 601                                 203 => 'Non-Authoritative Information',
 602                                 204 => 'No Content',
 603                                 205 => 'Reset Content',
 604                                 206 => 'Partial Content',
 605                                 207 => 'Multi-Status',
 606                                 300 => 'Multiple Choices',
 607                                 301 => 'Moved Permanently',
 608                                 302 => 'Found',
 609                                 303 => 'See Other',
 610                                 304 => 'Not Modified',
 611                                 305 => 'Use Proxy',
 612                                 307 => 'Temporary Redirect',
 613                                 400 => 'Bad Request',
 614                                 401 => 'Unauthorized',
 615                                 402 => 'Payment Required',
 616                                 403 => 'Forbidden',
 617                                 404 => 'Not Found',
 618                                 405 => 'Method Not Allowed',
 619                                 406 => 'Not Acceptable',
 620                                 407 => 'Proxy Authentication Required',
 621                                 408 => 'Request Timeout',
 622                                 409 => 'Conflict',
 623                                 410 => 'Gone',
 624                                 411 => 'Length Required',
 625                                 412 => 'Precondition Failed',
 626                                 413 => 'Request Entity Too Large',
 627                                 414 => 'Request-URI Too Large',
 628                                 415 => 'Unsupported Media Type',
 629                                 416 => 'Request Range Not Satisfiable',
 630                                 417 => 'Expectation Failed',
 631                                 422 => 'Unprocessable Entity',
 632                                 423 => 'Locked',
 633                                 424 => 'Failed Dependency',
 634                                 500 => 'Internal Server Error',
 635                                 501 => 'Not Implemented',
 636                                 502 => 'Bad Gateway',
 637                                 503 => 'Service Unavailable',
 638                                 504 => 'Gateway Timeout',
 639                                 505 => 'HTTP Version Not Supported',
 640                                 507 => 'Insufficient Storage'
 641                         );
 642
 643                         if ( $statusMessage[$this->mStatusCode] )
 644                                 $wgRequest->response()->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $statusMessage[$this->mStatusCode] );
 645                 }
 646
 647                 # Buffer output; final headers may depend on later processing
 648                 ob_start();
 649
 650                 # Disable temporary placeholders, so that the skin produces HTML
 651                 $sk->postParseLinkColour( false );
 652
 653                 $wgRequest->response()->header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
 654                 $wgRequest->response()->header( 'Content-language: '.$wgContLanguageCode );
 655
 656                 if ($this->mArticleBodyOnly) {
 657                         $this->out($this->mBodytext);
 658                 } else {
 659                         wfProfileIn( 'Output-skin' );
 660                         $sk->outputPage( $this );
 661                         wfProfileOut( 'Output-skin' );
 662                 }
 663
 664                 $this->sendCacheControl();
 665                 ob_end_flush();
 666                 wfProfileOut( $fname );
 667         }
 668
 669         /**
 670          * @todo document
 671          * @param string $ins
 672          */
 673         public function out( $ins ) {
 674                 global $wgInputEncoding, $wgOutputEncoding, $wgContLang;
 675                 if ( 0 == strcmp( $wgInputEncoding, $wgOutputEncoding ) ) {
 676                         $outs = $ins;
 677                 } else {
 678                         $outs = $wgContLang->iconv( $wgInputEncoding, $wgOutputEncoding, $ins );
 679                         if ( false === $outs ) { $outs = $ins; }
 680                 }
 681                 print $outs;
 682         }
 683
 684         /**
 685          * @todo document
 686          */
 687         public static function setEncodings() {
 688                 global $wgInputEncoding, $wgOutputEncoding;
 689                 global $wgUser, $wgContLang;
 690
 691                 $wgInputEncoding = strtolower( $wgInputEncoding );
 692
 693                 if ( empty( $_SERVER['HTTP_ACCEPT_CHARSET'] ) ) {
 694                         $wgOutputEncoding = strtolower( $wgOutputEncoding );
 695                         return;
 696                 }
 697                 $wgOutputEncoding = $wgInputEncoding;
 698         }
 699
 700         /**
 701          * Deprecated, use wfReportTime() instead.
 702          * @return string
 703          * @deprecated
 704          */
 705         public function reportTime() {
 706                 $time = wfReportTime();
 707                 return $time;
 708         }
 709
 710         /**
 711          * Produce a "user is blocked" page.
 712          *
 713          * @param bool $return Whether to have a "return to $wgTitle" message or not.
 714          * @return nothing
 715          */
 716         function blockedPage( $return = true ) {
 717                 global $wgUser, $wgContLang, $wgTitle;
 718
 719                 $this->setPageTitle( wfMsg( 'blockedtitle' ) );
 720                 $this->setRobotpolicy( 'noindex,nofollow' );
 721                 $this->setArticleRelated( false );
 722
 723                 $id = $wgUser->blockedBy();
 724                 $reason = $wgUser->blockedFor();
 725                 $ip = wfGetIP();
 726
 727                 if ( is_numeric( $id ) ) {
 728                         $name = User::whoIs( $id );
 729                 } else {
 730                         $name = $id;
 731                 }
 732                 $link = '[[' . $wgContLang->getNsText( NS_USER ) . ":{$name}|{$name}]]";
 733
 734                 $blockid = $wgUser->mBlock->mId;
 735
 736                 $this->addWikiText( wfMsg( 'blockedtext', $link, $reason, $ip, $name, $blockid ) );
 737
 738                 # Don't auto-return to special pages
 739                 if( $return ) {
 740                         $return = $wgTitle->getNamespace() > -1 ? $wgTitle->getPrefixedText() : NULL;
 741                         $this->returnToMain( false, $return );
 742                 }
 743         }
 744
 745         /**
 746          * Outputs a pretty page to explain why the request exploded.
 747          *
 748          * @param string $title Message key for page title.
 749          * @param string $msg   Message key for page text.
 750          * @return nothing
 751          */
 752         public function showErrorPage( $title, $msg ) {
 753                 global $wgTitle;
 754
 755                 $this->mDebugtext .= 'Original title: ' .
 756                   $wgTitle->getPrefixedText() . "\n";
 757                 $this->setPageTitle( wfMsg( $title ) );
 758                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
 759                 $this->setRobotpolicy( 'noindex,nofollow' );
 760                 $this->setArticleRelated( false );
 761                 $this->enableClientCache( false );
 762                 $this->mRedirect = '';
 763
 764                 $this->mBodytext = '';
 765                 $this->addWikiText( wfMsg( $msg ) );
 766                 $this->returnToMain( false );
 767         }
 768
 769         /** @obsolete */
 770         public function errorpage( $title, $msg ) {
 771                 throw new ErrorPageError( $title, $msg );
 772         }
 773
 774         /**
 775          * Display an error page indicating that a given version of MediaWiki is
 776          * required to use it
 777          *
 778          * @param mixed $version The version of MediaWiki needed to use the page
 779          */
 780         public function versionRequired( $version ) {
 781                 $this->setPageTitle( wfMsg( 'versionrequired', $version ) );
 782                 $this->setHTMLTitle( wfMsg( 'versionrequired', $version ) );
 783                 $this->setRobotpolicy( 'noindex,nofollow' );
 784                 $this->setArticleRelated( false );
 785                 $this->mBodytext = '';
 786
 787                 $this->addWikiText( wfMsg( 'versionrequiredtext', $version ) );
 788                 $this->returnToMain();
 789         }
 790
 791         /**
 792          * Display an error page noting that a given permission bit is required.
 793          *
 794          * @param string $permission key required
 795          */
 796         public function permissionRequired( $permission ) {
 797                 global $wgGroupPermissions, $wgUser;
 798
 799                 $this->setPageTitle( wfMsg( 'badaccess' ) );
 800                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
 801                 $this->setRobotpolicy( 'noindex,nofollow' );
 802                 $this->setArticleRelated( false );
 803                 $this->mBodytext = '';
 804
 805                 $groups = array();
 806                 foreach( $wgGroupPermissions as $key => $value ) {
 807                         if( isset( $value[$permission] ) && $value[$permission] == true ) {
 808                                 $groupName = User::getGroupName( $key );
 809                                 $groupPage = User::getGroupPage( $key );
 810                                 if( $groupPage ) {
 811                                         $skin = $wgUser->getSkin();
 812                                         $groups[] = $skin->makeLinkObj( $groupPage, $groupName );
 813                                 } else {
 814                                         $groups[] = $groupName;
 815                                 }
 816                         }
 817                 }
 818                 $n = count( $groups );
 819                 $groups = implode( ', ', $groups );
 820                 switch( $n ) {
 821                         case 0:
 822                         case 1:
 823                         case 2:
 824                                 $message = wfMsgHtml( "badaccess-group$n", $groups );
 825                                 break;
 826                         default:
 827                                 $message = wfMsgHtml( 'badaccess-groups', $groups );
 828                 }
 829                 $this->addHtml( $message );
 830                 $this->returnToMain( false );
 831         }
 832
 833         /**
 834          * Use permissionRequired.
 835          * @deprecated
 836          */
 837         public function sysopRequired() {
 838                 throw new MWException( "Call to deprecated OutputPage::sysopRequired() method\n" );
 839         }
 840
 841         /**
 842          * Use permissionRequired.
 843          * @deprecated
 844          */
 845         public function developerRequired() {
 846                 throw new MWException( "Call to deprecated OutputPage::developerRequired() method\n" );
 847         }
 848
 849         /**
 850          * Produce the stock "please login to use the wiki" page
 851          */
 852         public function loginToUse() {
 853                 global $wgUser, $wgTitle, $wgContLang;
 854
 855                 if( $wgUser->isLoggedIn() ) {
 856                         $this->permissionRequired( 'read' );
 857                         return;
 858                 }
 859
 860                 $skin = $wgUser->getSkin();
 861
 862                 $this->setPageTitle( wfMsg( 'loginreqtitle' ) );
 863                 $this->setHtmlTitle( wfMsg( 'errorpagetitle' ) );
 864                 $this->setRobotPolicy( 'noindex,nofollow' );
 865                 $this->setArticleFlag( false );
 866
 867                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
 868                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $wgTitle->getPrefixedUrl() );
 869                 $this->addHtml( wfMsgWikiHtml( 'loginreqpagetext', $loginLink ) );
 870                 $this->addHtml( "\n<!--" . $wgTitle->getPrefixedUrl() . "-->" );
 871
 872                 # Don't return to the main page if the user can't read it
 873                 # otherwise we'll end up in a pointless loop
 874                 $mainPage = Title::newMainPage();
 875                 if( $mainPage->userCanRead() )
 876                         $this->returnToMain( true, $mainPage );
 877         }
 878
 879         /** @obsolete */
 880         public function databaseError( $fname, $sql, $error, $errno ) {
 881                 throw new MWException( "OutputPage::databaseError is obsolete\n" );
 882         }
 883
 884         /**
 885          * @todo document
 886          * @param bool  $protected Is the reason the page can't be reached because it's protected?
 887          * @param mixed $source
 888          */
 889         public function readOnlyPage( $source = null, $protected = false ) {
 890                 global $wgUser, $wgReadOnlyFile, $wgReadOnly, $wgTitle;
 891                 $skin = $wgUser->getSkin();
 892
 893                 $this->setRobotpolicy( 'noindex,nofollow' );
 894                 $this->setArticleRelated( false );
 895
 896                 if( $protected ) {
 897                         $this->setPageTitle( wfMsg( 'viewsource' ) );
 898                         $this->setSubtitle( wfMsg( 'viewsourcefor', $skin->makeKnownLinkObj( $wgTitle ) ) );
 899
 900                         $cascadeSources = $wgTitle->getCascadeProtectionSources();
 901
 902                         # Determine if protection is due to the page being a system message
 903                         # and show an appropriate explanation
 904                         if( $wgTitle->getNamespace() == NS_MEDIAWIKI ) {
 905                                 $this->addWikiText( wfMsg( 'protectedinterface' ) );
 906                         } if ( $cascadeSources && count($cascadeSources) > 0 ) {
 907                                 $titles = '';
 908
 909                                 foreach ( $cascadeSources as $title ) {
 910                                         $titles .= '* [[:' . $title->getPrefixedText() . "]]\n";
 911                                 }
 912
 913                                 $notice = wfMsg( 'cascadeprotected' ) . "\n$titles";
 914
 915                                 $this->addWikiText( $notice );
 916                         } else {
 917                                 $this->addWikiText( wfMsg( 'protectedpagetext' ) );
 918                         }
 919                 } else {
 920                         $this->setPageTitle( wfMsg( 'readonly' ) );
 921                         if ( $wgReadOnly ) {
 922                                 $reason = $wgReadOnly;
 923                         } else {
 924                                 $reason = file_get_contents( $wgReadOnlyFile );
 925                         }
 926                         $this->addWikiText( wfMsg( 'readonlytext', $reason ) );
 927                 }
 928
 929                 if( is_string( $source ) ) {
 930                         $this->addWikiText( wfMsg( 'viewsourcetext' ) );
 931                         $rows = $wgUser->getIntOption( 'rows' );
 932                         $cols = $wgUser->getIntOption( 'cols' );
 933                         $text = "\n<textarea name='wpTextbox1' id='wpTextbox1' cols='$cols' rows='$rows' readonly='readonly'>" .
 934                                 htmlspecialchars( $source ) . "\n</textarea>";
 935                         $this->addHTML( $text );
 936                 }
 937                 $article = new Article($wgTitle);
 938                 $this->addHTML( $skin->formatTemplates($article->getUsedTemplates()) );
 939
 940                 $this->returnToMain( false );
 941         }
 942
 943         /** @obsolete */
 944         public function fatalError( $message ) {
 945                 throw new FatalError( $message );
 946         }
 947
 948         /** @obsolete */
 949         public function unexpectedValueError( $name, $val ) {
 950                 throw new FatalError( wfMsg( 'unexpected', $name, $val ) );
 951         }
 952
 953         /** @obsolete */
 954         public function fileCopyError( $old, $new ) {
 955                 throw new FatalError( wfMsg( 'filecopyerror', $old, $new ) );
 956         }
 957
 958         /** @obsolete */
 959         public function fileRenameError( $old, $new ) {
 960                 throw new FatalError( wfMsg( 'filerenameerror', $old, $new ) );
 961         }
 962
 963         /** @obsolete */
 964         public function fileDeleteError( $name ) {
 965                 throw new FatalError( wfMsg( 'filedeleteerror', $name ) );
 966         }
 967
 968         /** @obsolete */
 969         public function fileNotFoundError( $name ) {
 970                 throw new FatalError( wfMsg( 'filenotfound', $name ) );
 971         }
 972
 973         public function showFatalError( $message ) {
 974                 $this->setPageTitle( wfMsg( "internalerror" ) );
 975                 $this->setRobotpolicy( "noindex,nofollow" );
 976                 $this->setArticleRelated( false );
 977                 $this->enableClientCache( false );
 978                 $this->mRedirect = '';
 979                 $this->mBodytext = $message;
 980         }
 981
 982         public function showUnexpectedValueError( $name, $val ) {
 983                 $this->showFatalError( wfMsg( 'unexpected', $name, $val ) );
 984         }
 985
 986         public function showFileCopyError( $old, $new ) {
 987                 $this->showFatalError( wfMsg( 'filecopyerror', $old, $new ) );
 988         }
 989
 990         public function showFileRenameError( $old, $new ) {
 991                 $this->showFatalError( wfMsg( 'filerenameerror', $old, $new ) );
 992         }
 993
 994         public function showFileDeleteError( $name ) {
 995                 $this->showFatalError( wfMsg( 'filedeleteerror', $name ) );
 996         }
 997
 998         public function showFileNotFoundError( $name ) {
 999                 $this->showFatalError( wfMsg( 'filenotfound', $name ) );
1000         }
1001
1002         /**
1003          * return from error messages or notes
1004          * @param $auto automatically redirect the user after 10 seconds
1005          * @param $returnto page title to return to. Default is Main Page.
1006          */
1007         public function returnToMain( $auto = true, $returnto = NULL ) {
1008                 global $wgUser, $wgOut, $wgRequest;
1009
1010                 if ( $returnto == NULL ) {
1011                         $returnto = $wgRequest->getText( 'returnto' );
1012                 }
1013
1014                 if ( '' === $returnto ) {
1015                         $returnto = Title::newMainPage();
1016                 }
1017
1018                 if ( is_object( $returnto ) ) {
1019                         $titleObj = $returnto;
1020                 } else {
1021                         $titleObj = Title::newFromText( $returnto );
1022                 }
1023                 if ( !is_object( $titleObj ) ) {
1024                         $titleObj = Title::newMainPage();
1025                 }
1026
1027                 $sk = $wgUser->getSkin();
1028                 $link = $sk->makeLinkObj( $titleObj, '' );
1029
1030                 $r = wfMsg( 'returnto', $link );
1031                 if ( $auto ) {
1032                         $wgOut->addMeta( 'http:Refresh', '10;url=' . $titleObj->escapeFullURL() );
1033                 }
1034                 $wgOut->addHTML( "\n<p>$r</p>\n" );
1035         }
1036
1037         /**
1038          * This function takes the title (first item of mGoodLinks), categories, existing and broken links for the page
1039          * and uses the first 10 of them for META keywords
1040          *
1041          * @param ParserOutput &$parserOutput
1042          */
1043         private function addKeywords( &$parserOutput ) {
1044                 global $wgTitle;
1045                 $this->addKeyword( $wgTitle->getPrefixedText() );
1046                 $count = 1;
1047                 $links2d =& $parserOutput->getLinks();
1048                 if ( !is_array( $links2d ) ) {
1049                         return;
1050                 }
1051                 foreach ( $links2d as $dbkeys ) {
1052                         foreach( $dbkeys as $dbkey => $unused ) {
1053                                 $this->addKeyword( $dbkey );
1054                                 if ( ++$count > 10 ) {
1055                                         break 2;
1056                                 }
1057                         }
1058                 }
1059         }
1060
1061         /**
1062          * @return string The doctype, opening <html>, and head element.
1063          */
1064         public function headElement() {
1065                 global $wgDocType, $wgDTD, $wgContLanguageCode, $wgOutputEncoding, $wgMimeType;
1066                 global $wgXhtmlDefaultNamespace, $wgXhtmlNamespaces;
1067                 global $wgUser, $wgContLang, $wgUseTrackbacks, $wgTitle, $wgStyleVersion;
1068
1069                 if( $wgMimeType == 'text/xml' || $wgMimeType == 'application/xhtml+xml' || $wgMimeType == 'application/xml' ) {
1070                         $ret = "<?xml version=\"1.0\" encoding=\"$wgOutputEncoding\" ?>\n";
1071                 } else {
1072                         $ret = '';
1073                 }
1074
1075                 $ret .= "<!DOCTYPE html PUBLIC \"$wgDocType\"\n        \"$wgDTD\">\n";
1076
1077                 if ( '' == $this->getHTMLTitle() ) {
1078                         $this->setHTMLTitle(  wfMsg( 'pagetitle', $this->getPageTitle() ));
1079                 }
1080
1081                 $rtl = $wgContLang->isRTL() ? " dir='RTL'" : '';
1082                 $ret .= "<html xmlns=\"{$wgXhtmlDefaultNamespace}\" ";
1083                 foreach($wgXhtmlNamespaces as $tag => $ns) {
1084                         $ret .= "xmlns:{$tag}=\"{$ns}\" ";
1085                 }
1086                 $ret .= "xml:lang=\"$wgContLanguageCode\" lang=\"$wgContLanguageCode\" $rtl>\n";
1087                 $ret .= "<head>\n<title>" . htmlspecialchars( $this->getHTMLTitle() ) . "</title>\n";
1088                 array_push( $this->mMetatags, array( "http:Content-type", "$wgMimeType; charset={$wgOutputEncoding}" ) );
1089
1090                 $ret .= $this->getHeadLinks();
1091                 global $wgStylePath;
1092                 if( $this->isPrintable() ) {
1093                         $media = '';
1094                 } else {
1095                         $media = "media='print'";
1096                 }
1097                 $printsheet = htmlspecialchars( "$wgStylePath/common/wikiprintable.css?$wgStyleVersion" );
1098                 $ret .= "<link rel='stylesheet' type='text/css' $media href='$printsheet' />\n";
1099
1100                 $sk = $wgUser->getSkin();
1101                 $ret .= $sk->getHeadScripts();
1102                 $ret .= $this->mScripts;
1103                 $ret .= $sk->getUserStyles();
1104
1105                 if ($wgUseTrackbacks && $this->isArticleRelated())
1106                         $ret .= $wgTitle->trackbackRDF();
1107
1108                 $ret .= "</head>\n";
1109                 return $ret;
1110         }
1111
1112         /**
1113          * @return string HTML tag links to be put in the header.
1114          */
1115         public function getHeadLinks() {
1116                 global $wgRequest;
1117                 $ret = '';
1118                 foreach ( $this->mMetatags as $tag ) {
1119                         if ( 0 == strcasecmp( 'http:', substr( $tag[0], 0, 5 ) ) ) {
1120                                 $a = 'http-equiv';
1121                                 $tag[0] = substr( $tag[0], 5 );
1122                         } else {
1123                                 $a = 'name';
1124                         }
1125                         $ret .= "<meta $a=\"{$tag[0]}\" content=\"{$tag[1]}\" />\n";
1126                 }
1127
1128                 $p = $this->mRobotpolicy;
1129                 if( $p !== '' && $p != 'index,follow' ) {
1130                         // http://www.robotstxt.org/wc/meta-user.html
1131                         // Only show if it's different from the default robots policy
1132                         $ret .= "<meta name=\"robots\" content=\"$p\" />\n";
1133                 }
1134
1135                 if ( count( $this->mKeywords ) > 0 ) {
1136                         $strip = array(
1137                                 "/<.*?>/" => '',
1138                                 "/_/" => ' '
1139                         );
1140                         $ret .= "\t\t<meta name=\"keywords\" content=\"" .
1141                           htmlspecialchars(preg_replace(array_keys($strip), array_values($strip),implode( ",", $this->mKeywords ))) . "\" />\n";
1142                 }
1143                 foreach ( $this->mLinktags as $tag ) {
1144                         $ret .= "\t\t<link";
1145                         foreach( $tag as $attr => $val ) {
1146                                 $ret .= " $attr=\"" . htmlspecialchars( $val ) . "\"";
1147                         }
1148                         $ret .= " />\n";
1149                 }
1150                 if( $this->isSyndicated() ) {
1151                         # FIXME: centralize the mime-type and name information in Feed.php
1152                         $link = $wgRequest->escapeAppendQuery( 'feed=rss' );
1153                         $ret .= "<link rel='alternate' type='application/rss+xml' title='RSS 2.0' href='$link' />\n";
1154                         $link = $wgRequest->escapeAppendQuery( 'feed=atom' );
1155                         $ret .= "<link rel='alternate' type='application/atom+xml' title='Atom 1.0' href='$link' />\n";
1156                 }
1157
1158                 return $ret;
1159         }
1160
1161         /**
1162          * Turn off regular page output and return an error reponse
1163          * for when rate limiting has triggered.
1164          * @todo i18n
1165          */
1166         public function rateLimited() {
1167                 global $wgOut;
1168                 $wgOut->disable();
1169                 wfHttpError( 500, 'Internal Server Error',
1170                         'Sorry, the server has encountered an internal error. ' .
1171                         'Please wait a moment and hit "refresh" to submit the request again.' );
1172         }
1173
1174         /**
1175          * Show an "add new section" link?
1176          *
1177          * @return bool True if the parser output instructs us to add one
1178          */
1179         public function showNewSectionLink() {
1180                 return $this->mNewSectionLink;
1181         }
1182 }
1183 ?>