includes/OutputPage.php

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