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 && ! 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
 553                         wfRunHooks( 'AjaxAddScript', array( &$this ) );
 554
 555                         if( $wgAjaxSearch ) {
 556                                 $this->addScript( "<script type=\"{$wgJsMimeType}\" src=\"{$wgStylePath}/common/ajaxsearch.js\"></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\"></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                         if( $wgDebugRedirects ) {
 581                                 $url = htmlspecialchars( $this->mRedirect );
 582                                 print "<html>\n<head>\n<title>Redirect</title>\n</head>\n<body>\n";
 583                                 print "<p>Location: <a href=\"$url\">$url</a></p>\n";
 584                                 print "</body>\n</html>\n";
 585                         } else {
 586                                 $wgRequest->response()->header( 'Location: '.$this->mRedirect );
 587                         }
 588                         wfProfileOut( $fname );
 589                         return;
 590                 }
 591                 elseif ( $this->mStatusCode )
 592                 {
 593                         $statusMessage = array(
 594                                 100 => 'Continue',
 595                                 101 => 'Switching Protocols',
 596                                 102 => 'Processing',
 597                                 200 => 'OK',
 598                                 201 => 'Created',
 599                                 202 => 'Accepted',
 600                                 203 => 'Non-Authoritative Information',
 601                                 204 => 'No Content',
 602                                 205 => 'Reset Content',
 603                                 206 => 'Partial Content',
 604                                 207 => 'Multi-Status',
 605                                 300 => 'Multiple Choices',
 606                                 301 => 'Moved Permanently',
 607                                 302 => 'Found',
 608                                 303 => 'See Other',
 609                                 304 => 'Not Modified',
 610                                 305 => 'Use Proxy',
 611                                 307 => 'Temporary Redirect',
 612                                 400 => 'Bad Request',
 613                                 401 => 'Unauthorized',
 614                                 402 => 'Payment Required',
 615                                 403 => 'Forbidden',
 616                                 404 => 'Not Found',
 617                                 405 => 'Method Not Allowed',
 618                                 406 => 'Not Acceptable',
 619                                 407 => 'Proxy Authentication Required',
 620                                 408 => 'Request Timeout',
 621                                 409 => 'Conflict',
 622                                 410 => 'Gone',
 623                                 411 => 'Length Required',
 624                                 412 => 'Precondition Failed',
 625                                 413 => 'Request Entity Too Large',
 626                                 414 => 'Request-URI Too Large',
 627                                 415 => 'Unsupported Media Type',
 628                                 416 => 'Request Range Not Satisfiable',
 629                                 417 => 'Expectation Failed',
 630                                 422 => 'Unprocessable Entity',
 631                                 423 => 'Locked',
 632                                 424 => 'Failed Dependency',
 633                                 500 => 'Internal Server Error',
 634                                 501 => 'Not Implemented',
 635                                 502 => 'Bad Gateway',
 636                                 503 => 'Service Unavailable',
 637                                 504 => 'Gateway Timeout',
 638                                 505 => 'HTTP Version Not Supported',
 639                                 507 => 'Insufficient Storage'
 640                         );
 641
 642                         if ( $statusMessage[$this->mStatusCode] )
 643                                 $wgRequest->response()->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $statusMessage[$this->mStatusCode] );
 644                 }
 645
 646                 # Buffer output; final headers may depend on later processing
 647                 ob_start();
 648
 649                 # Disable temporary placeholders, so that the skin produces HTML
 650                 $sk->postParseLinkColour( false );
 651
 652                 $wgRequest->response()->header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
 653                 $wgRequest->response()->header( 'Content-language: '.$wgContLanguageCode );
 654
 655                 if ($this->mArticleBodyOnly) {
 656                         $this->out($this->mBodytext);
 657                 } else {
 658                         wfProfileIn( 'Output-skin' );
 659                         $sk->outputPage( $this );
 660                         wfProfileOut( 'Output-skin' );
 661                 }
 662
 663                 $this->sendCacheControl();
 664                 ob_end_flush();
 665                 wfProfileOut( $fname );
 666         }
 667
 668         /**
 669          * @todo document
 670          * @param string $ins
 671          */
 672         public function out( $ins ) {
 673                 global $wgInputEncoding, $wgOutputEncoding, $wgContLang;
 674                 if ( 0 == strcmp( $wgInputEncoding, $wgOutputEncoding ) ) {
 675                         $outs = $ins;
 676                 } else {
 677                         $outs = $wgContLang->iconv( $wgInputEncoding, $wgOutputEncoding, $ins );
 678                         if ( false === $outs ) { $outs = $ins; }
 679                 }
 680                 print $outs;
 681         }
 682
 683         /**
 684          * @todo document
 685          */
 686         public static function setEncodings() {
 687                 global $wgInputEncoding, $wgOutputEncoding;
 688                 global $wgUser, $wgContLang;
 689
 690                 $wgInputEncoding = strtolower( $wgInputEncoding );
 691
 692                 if ( empty( $_SERVER['HTTP_ACCEPT_CHARSET'] ) ) {
 693                         $wgOutputEncoding = strtolower( $wgOutputEncoding );
 694                         return;
 695                 }
 696                 $wgOutputEncoding = $wgInputEncoding;
 697         }
 698
 699         /**
 700          * Deprecated, use wfReportTime() instead.
 701          * @return string
 702          * @deprecated
 703          */
 704         public function reportTime() {
 705                 $time = wfReportTime();
 706                 return $time;
 707         }
 708
 709         /**
 710          * Produce a "user is blocked" page.
 711          *
 712          * @param bool $return Whether to have a "return to $wgTitle" message or not.
 713          * @return nothing
 714          */
 715         function blockedPage( $return = true ) {
 716                 global $wgUser, $wgContLang, $wgTitle;
 717
 718                 $this->setPageTitle( wfMsg( 'blockedtitle' ) );
 719                 $this->setRobotpolicy( 'noindex,nofollow' );
 720                 $this->setArticleRelated( false );
 721
 722                 $id = $wgUser->blockedBy();
 723                 $reason = $wgUser->blockedFor();
 724                 $ip = wfGetIP();
 725
 726                 if ( is_numeric( $id ) ) {
 727                         $name = User::whoIs( $id );
 728                 } else {
 729                         $name = $id;
 730                 }
 731                 $link = '[[' . $wgContLang->getNsText( NS_USER ) . ":{$name}|{$name}]]";
 732
 733                 $blockid = $wgUser->mBlock->mId;
 734
 735                 $this->addWikiText( wfMsg( 'blockedtext', $link, $reason, $ip, $name, $blockid ) );
 736
 737                 # Don't auto-return to special pages
 738                 if( $return ) {
 739                         $return = $wgTitle->getNamespace() > -1 ? $wgTitle->getPrefixedText() : NULL;
 740                         $this->returnToMain( false, $return );
 741                 }
 742         }
 743
 744         /**
 745          * Outputs a pretty page to explain why the request exploded.
 746          *
 747          * @param string $title Message key for page title.
 748          * @param string $msg   Message key for page text.
 749          * @return nothing
 750          */
 751         public function showErrorPage( $title, $msg ) {
 752                 global $wgTitle;
 753
 754                 $this->mDebugtext .= 'Original title: ' .
 755                   $wgTitle->getPrefixedText() . "\n";
 756                 $this->setPageTitle( wfMsg( $title ) );
 757                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
 758                 $this->setRobotpolicy( 'noindex,nofollow' );
 759                 $this->setArticleRelated( false );
 760                 $this->enableClientCache( false );
 761                 $this->mRedirect = '';
 762
 763                 $this->mBodytext = '';
 764                 $this->addWikiText( wfMsg( $msg ) );
 765                 $this->returnToMain( false );
 766         }
 767
 768         /** @obsolete */
 769         public function errorpage( $title, $msg ) {
 770                 throw new ErrorPageError( $title, $msg );
 771         }
 772
 773         /**
 774          * Display an error page indicating that a given version of MediaWiki is
 775          * required to use it
 776          *
 777          * @param mixed $version The version of MediaWiki needed to use the page
 778          */
 779         public function versionRequired( $version ) {
 780                 $this->setPageTitle( wfMsg( 'versionrequired', $version ) );
 781                 $this->setHTMLTitle( wfMsg( 'versionrequired', $version ) );
 782                 $this->setRobotpolicy( 'noindex,nofollow' );
 783                 $this->setArticleRelated( false );
 784                 $this->mBodytext = '';
 785
 786                 $this->addWikiText( wfMsg( 'versionrequiredtext', $version ) );
 787                 $this->returnToMain();
 788         }
 789
 790         /**
 791          * Display an error page noting that a given permission bit is required.
 792          *
 793          * @param string $permission key required
 794          */
 795         public function permissionRequired( $permission ) {
 796                 global $wgGroupPermissions, $wgUser;
 797
 798                 $this->setPageTitle( wfMsg( 'badaccess' ) );
 799                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
 800                 $this->setRobotpolicy( 'noindex,nofollow' );
 801                 $this->setArticleRelated( false );
 802                 $this->mBodytext = '';
 803
 804                 $groups = array();
 805                 foreach( $wgGroupPermissions as $key => $value ) {
 806                         if( isset( $value[$permission] ) && $value[$permission] == true ) {
 807                                 $groupName = User::getGroupName( $key );
 808                                 $groupPage = User::getGroupPage( $key );
 809                                 if( $groupPage ) {
 810                                         $skin = $wgUser->getSkin();
 811                                         $groups[] = '"'.$skin->makeLinkObj( $groupPage, $groupName ).'"';
 812                                 } else {
 813                                         $groups[] = '"'.$groupName.'"';
 814                                 }
 815                         }
 816                 }
 817                 $n = count( $groups );
 818                 $groups = implode( ', ', $groups );
 819                 switch( $n ) {
 820                         case 0:
 821                         case 1:
 822                         case 2:
 823                                 $message = wfMsgHtml( "badaccess-group$n", $groups );
 824                                 break;
 825                         default:
 826                                 $message = wfMsgHtml( 'badaccess-groups', $groups );
 827                 }
 828                 $this->addHtml( $message );
 829                 $this->returnToMain( false );
 830         }
 831
 832         /**
 833          * Use permissionRequired.
 834          * @deprecated
 835          */
 836         public function sysopRequired() {
 837                 throw new MWException( "Call to deprecated OutputPage::sysopRequired() method\n" );
 838         }
 839
 840         /**
 841          * Use permissionRequired.
 842          * @deprecated
 843          */
 844         public function developerRequired() {
 845                 throw new MWException( "Call to deprecated OutputPage::developerRequired() method\n" );
 846         }
 847
 848         /**
 849          * Produce the stock "please login to use the wiki" page
 850          */
 851         public function loginToUse() {
 852                 global $wgUser, $wgTitle, $wgContLang;
 853
 854                 if( $wgUser->isLoggedIn() ) {
 855                         $this->permissionRequired( 'read' );
 856                         return;
 857                 }
 858
 859                 $skin = $wgUser->getSkin();
 860
 861                 $this->setPageTitle( wfMsg( 'loginreqtitle' ) );
 862                 $this->setHtmlTitle( wfMsg( 'errorpagetitle' ) );
 863                 $this->setRobotPolicy( 'noindex,nofollow' );
 864                 $this->setArticleFlag( false );
 865
 866                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
 867                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $wgTitle->getPrefixedUrl() );
 868                 $this->addHtml( wfMsgWikiHtml( 'loginreqpagetext', $loginLink ) );
 869                 $this->addHtml( "\n<!--" . $wgTitle->getPrefixedUrl() . "-->" );
 870
 871                 # Don't return to the main page if the user can't read it
 872                 # otherwise we'll end up in a pointless loop
 873                 $mainPage = Title::newMainPage();
 874                 if( $mainPage->userCanRead() )
 875                         $this->returnToMain( true, $mainPage );
 876         }
 877
 878         /** @obsolete */
 879         public function databaseError( $fname, $sql, $error, $errno ) {
 880                 throw new MWException( "OutputPage::databaseError is obsolete\n" );
 881         }
 882
 883         /**
 884          * @todo document
 885          * @param bool  $protected Is the reason the page can't be reached because it's protected?
 886          * @param mixed $source
 887          */
 888         public function readOnlyPage( $source = null, $protected = false ) {
 889                 global $wgUser, $wgReadOnlyFile, $wgReadOnly, $wgTitle;
 890                 $skin = $wgUser->getSkin();
 891
 892                 $this->setRobotpolicy( 'noindex,nofollow' );
 893                 $this->setArticleRelated( false );
 894
 895                 if( $protected ) {
 896                         $this->setPageTitle( wfMsg( 'viewsource' ) );
 897                         $this->setSubtitle( wfMsg( 'viewsourcefor', $skin->makeKnownLinkObj( $wgTitle ) ) );
 898
 899                         $cascadeSources = $wgTitle->getCascadeProtectionSources();
 900
 901                         # Determine if protection is due to the page being a system message
 902                         # and show an appropriate explanation
 903                         if( $wgTitle->getNamespace() == NS_MEDIAWIKI ) {
 904                                 $this->addWikiText( wfMsg( 'protectedinterface' ) );
 905                         } if ( $cascadeSources && count($cascadeSources) > 0 ) {
 906                                 $titles = '';
 907
 908                                 foreach ( $cascadeSources as $title ) {
 909                                         $titles .= '* [[:' . $title->getPrefixedText() . "]]\n";
 910                                 }
 911
 912                                 $notice = wfMsg( 'cascadeprotected' ) . "\n$titles";
 913
 914                                 $this->addWikiText( $notice );
 915                         } else {
 916                                 $this->addWikiText( wfMsg( 'protectedpagetext' ) );
 917                         }
 918                 } else {
 919                         $this->setPageTitle( wfMsg( 'readonly' ) );
 920                         if ( $wgReadOnly ) {
 921                                 $reason = $wgReadOnly;
 922                         } else {
 923                                 $reason = file_get_contents( $wgReadOnlyFile );
 924                         }
 925                         $this->addWikiText( wfMsg( 'readonlytext', $reason ) );
 926                 }
 927
 928                 if( is_string( $source ) ) {
 929                         $this->addWikiText( wfMsg( 'viewsourcetext' ) );
 930                         $rows = $wgUser->getIntOption( 'rows' );
 931                         $cols = $wgUser->getIntOption( 'cols' );
 932                         $text = "\n<textarea name='wpTextbox1' id='wpTextbox1' cols='$cols' rows='$rows' readonly='readonly'>" .
 933                                 htmlspecialchars( $source ) . "\n</textarea>";
 934                         $this->addHTML( $text );
 935                 }
 936                 $article = new Article($wgTitle);
 937                 $this->addHTML( $skin->formatTemplates($article->getUsedTemplates()) );
 938
 939                 $this->returnToMain( false );
 940         }
 941
 942         /** @obsolete */
 943         public function fatalError( $message ) {
 944                 throw new FatalError( $message );
 945         }
 946
 947         /** @obsolete */
 948         public function unexpectedValueError( $name, $val ) {
 949                 throw new FatalError( wfMsg( 'unexpected', $name, $val ) );
 950         }
 951
 952         /** @obsolete */
 953         public function fileCopyError( $old, $new ) {
 954                 throw new FatalError( wfMsg( 'filecopyerror', $old, $new ) );
 955         }
 956
 957         /** @obsolete */
 958         public function fileRenameError( $old, $new ) {
 959                 throw new FatalError( wfMsg( 'filerenameerror', $old, $new ) );
 960         }
 961
 962         /** @obsolete */
 963         public function fileDeleteError( $name ) {
 964                 throw new FatalError( wfMsg( 'filedeleteerror', $name ) );
 965         }
 966
 967         /** @obsolete */
 968         public function fileNotFoundError( $name ) {
 969                 throw new FatalError( wfMsg( 'filenotfound', $name ) );
 970         }
 971
 972         public function showFatalError( $message ) {
 973                 $this->setPageTitle( wfMsg( "internalerror" ) );
 974                 $this->setRobotpolicy( "noindex,nofollow" );
 975                 $this->setArticleRelated( false );
 976                 $this->enableClientCache( false );
 977                 $this->mRedirect = '';
 978                 $this->mBodytext = $message;
 979         }
 980
 981         public function showUnexpectedValueError( $name, $val ) {
 982                 $this->showFatalError( wfMsg( 'unexpected', $name, $val ) );
 983         }
 984
 985         public function showFileCopyError( $old, $new ) {
 986                 $this->showFatalError( wfMsg( 'filecopyerror', $old, $new ) );
 987         }
 988
 989         public function showFileRenameError( $old, $new ) {
 990                 $this->showFatalError( wfMsg( 'filerenameerror', $old, $new ) );
 991         }
 992
 993         public function showFileDeleteError( $name ) {
 994                 $this->showFatalError( wfMsg( 'filedeleteerror', $name ) );
 995         }
 996
 997         public function showFileNotFoundError( $name ) {
 998                 $this->showFatalError( wfMsg( 'filenotfound', $name ) );
 999         }
1000
1001         /**
1002          * return from error messages or notes
1003          * @param $auto automatically redirect the user after 10 seconds
1004          * @param $returnto page title to return to. Default is Main Page.
1005          */
1006         public function returnToMain( $auto = true, $returnto = NULL ) {
1007                 global $wgUser, $wgOut, $wgRequest;
1008
1009                 if ( $returnto == NULL ) {
1010                         $returnto = $wgRequest->getText( 'returnto' );
1011                 }
1012
1013                 if ( '' === $returnto ) {
1014                         $returnto = Title::newMainPage();
1015                 }
1016
1017                 if ( is_object( $returnto ) ) {
1018                         $titleObj = $returnto;
1019                 } else {
1020                         $titleObj = Title::newFromText( $returnto );
1021                 }
1022                 if ( !is_object( $titleObj ) ) {
1023                         $titleObj = Title::newMainPage();
1024                 }
1025
1026                 $sk = $wgUser->getSkin();
1027                 $link = $sk->makeLinkObj( $titleObj, '' );
1028
1029                 $r = wfMsg( 'returnto', $link );
1030                 if ( $auto ) {
1031                         $wgOut->addMeta( 'http:Refresh', '10;url=' . $titleObj->escapeFullURL() );
1032                 }
1033                 $wgOut->addHTML( "\n<p>$r</p>\n" );
1034         }
1035
1036         /**
1037          * This function takes the title (first item of mGoodLinks), categories, existing and broken links for the page
1038          * and uses the first 10 of them for META keywords
1039          *
1040          * @param ParserOutput &$parserOutput
1041          */
1042         private function addKeywords( &$parserOutput ) {
1043                 global $wgTitle;
1044                 $this->addKeyword( $wgTitle->getPrefixedText() );
1045                 $count = 1;
1046                 $links2d =& $parserOutput->getLinks();
1047                 if ( !is_array( $links2d ) ) {
1048                         return;
1049                 }
1050                 foreach ( $links2d as $dbkeys ) {
1051                         foreach( $dbkeys as $dbkey => $unused ) {
1052                                 $this->addKeyword( $dbkey );
1053                                 if ( ++$count > 10 ) {
1054                                         break 2;
1055                                 }
1056                         }
1057                 }
1058         }
1059
1060         /**
1061          * @return string The doctype, opening <html>, and head element.
1062          */
1063         public function headElement() {
1064                 global $wgDocType, $wgDTD, $wgContLanguageCode, $wgOutputEncoding, $wgMimeType;
1065                 global $wgXhtmlDefaultNamespace, $wgXhtmlNamespaces;
1066                 global $wgUser, $wgContLang, $wgUseTrackbacks, $wgTitle, $wgStyleVersion;
1067
1068                 if( $wgMimeType == 'text/xml' || $wgMimeType == 'application/xhtml+xml' || $wgMimeType == 'application/xml' ) {
1069                         $ret = "<?xml version=\"1.0\" encoding=\"$wgOutputEncoding\" ?>\n";
1070                 } else {
1071                         $ret = '';
1072                 }
1073
1074                 $ret .= "<!DOCTYPE html PUBLIC \"$wgDocType\"\n        \"$wgDTD\">\n";
1075
1076                 if ( '' == $this->getHTMLTitle() ) {
1077                         $this->setHTMLTitle(  wfMsg( 'pagetitle', $this->getPageTitle() ));
1078                 }
1079
1080                 $rtl = $wgContLang->isRTL() ? " dir='RTL'" : '';
1081                 $ret .= "<html xmlns=\"{$wgXhtmlDefaultNamespace}\" ";
1082                 foreach($wgXhtmlNamespaces as $tag => $ns) {
1083                         $ret .= "xmlns:{$tag}=\"{$ns}\" ";
1084                 }
1085                 $ret .= "xml:lang=\"$wgContLanguageCode\" lang=\"$wgContLanguageCode\" $rtl>\n";
1086                 $ret .= "<head>\n<title>" . htmlspecialchars( $this->getHTMLTitle() ) . "</title>\n";
1087                 array_push( $this->mMetatags, array( "http:Content-type", "$wgMimeType; charset={$wgOutputEncoding}" ) );
1088
1089                 $ret .= $this->getHeadLinks();
1090                 global $wgStylePath;
1091                 if( $this->isPrintable() ) {
1092                         $media = '';
1093                 } else {
1094                         $media = "media='print'";
1095                 }
1096                 $printsheet = htmlspecialchars( "$wgStylePath/common/wikiprintable.css?$wgStyleVersion" );
1097                 $ret .= "<link rel='stylesheet' type='text/css' $media href='$printsheet' />\n";
1098
1099                 $sk = $wgUser->getSkin();
1100                 $ret .= $sk->getHeadScripts();
1101                 $ret .= $this->mScripts;
1102                 $ret .= $sk->getUserStyles();
1103
1104                 if ($wgUseTrackbacks && $this->isArticleRelated())
1105                         $ret .= $wgTitle->trackbackRDF();
1106
1107                 $ret .= "</head>\n";
1108                 return $ret;
1109         }
1110
1111         /**
1112          * @return string HTML tag links to be put in the header.
1113          */
1114         public function getHeadLinks() {
1115                 global $wgRequest;
1116                 $ret = '';
1117                 foreach ( $this->mMetatags as $tag ) {
1118                         if ( 0 == strcasecmp( 'http:', substr( $tag[0], 0, 5 ) ) ) {
1119                                 $a = 'http-equiv';
1120                                 $tag[0] = substr( $tag[0], 5 );
1121                         } else {
1122                                 $a = 'name';
1123                         }
1124                         $ret .= "<meta $a=\"{$tag[0]}\" content=\"{$tag[1]}\" />\n";
1125                 }
1126
1127                 $p = $this->mRobotpolicy;
1128                 if( $p !== '' && $p != 'index,follow' ) {
1129                         // http://www.robotstxt.org/wc/meta-user.html
1130                         // Only show if it's different from the default robots policy
1131                         $ret .= "<meta name=\"robots\" content=\"$p\" />\n";
1132                 }
1133
1134                 if ( count( $this->mKeywords ) > 0 ) {
1135                         $strip = array(
1136                                 "/<.*?>/" => '',
1137                                 "/_/" => ' '
1138                         );
1139                         $ret .= "\t\t<meta name=\"keywords\" content=\"" .
1140                           htmlspecialchars(preg_replace(array_keys($strip), array_values($strip),implode( ",", $this->mKeywords ))) . "\" />\n";
1141                 }
1142                 foreach ( $this->mLinktags as $tag ) {
1143                         $ret .= "\t\t<link";
1144                         foreach( $tag as $attr => $val ) {
1145                                 $ret .= " $attr=\"" . htmlspecialchars( $val ) . "\"";
1146                         }
1147                         $ret .= " />\n";
1148                 }
1149                 if( $this->isSyndicated() ) {
1150                         # FIXME: centralize the mime-type and name information in Feed.php
1151                         $link = $wgRequest->escapeAppendQuery( 'feed=rss' );
1152                         $ret .= "<link rel='alternate' type='application/rss+xml' title='RSS 2.0' href='$link' />\n";
1153                         $link = $wgRequest->escapeAppendQuery( 'feed=atom' );
1154                         $ret .= "<link rel='alternate' type='application/atom+xml' title='Atom 1.0' href='$link' />\n";
1155                 }
1156
1157                 return $ret;
1158         }
1159
1160         /**
1161          * Turn off regular page output and return an error reponse
1162          * for when rate limiting has triggered.
1163          * @todo i18n
1164          */
1165         public function rateLimited() {
1166                 global $wgOut;
1167                 $wgOut->disable();
1168                 wfHttpError( 500, 'Internal Server Error',
1169                         'Sorry, the server has encountered an internal error. ' .
1170                         'Please wait a moment and hit "refresh" to submit the request again.' );
1171         }
1172
1173         /**
1174          * Show an "add new section" link?
1175          *
1176          * @return bool True if the parser output instructs us to add one
1177          */
1178         public function showNewSectionLink() {
1179                 return $this->mNewSectionLink;
1180         }
1181 }
1182 ?>