includes/OutputPage.php

   1 <?php
   2 if ( ! defined( 'MEDIAWIKI' ) )
   3         die( 1 );
   4
   5 /**
   6  * @todo document
   7  */
   8 class OutputPage {
   9         var $mMetatags = array(), $mKeywords = array(), $mLinktags = array();
  10         var $mExtStyles = array();
  11         var $mPagetitle = '', $mBodytext = '', $mDebugtext = '';
  12         var $mHTMLtitle = '', $mIsarticle = true, $mPrintable = false;
  13         var $mSubtitle = '', $mRedirect = '', $mStatusCode;
  14         var $mLastModified = '', $mETag = false;
  15         var $mCategoryLinks = array(), $mLanguageLinks = array();
  16
  17         var $mScriptLoaderClassList = array();
  18
  19         var $mScripts = '', $mLinkColours, $mPageLinkTitle = '', $mHeadItems = array();
  20         var $mInlineMsg = array();
  21
  22         var $mTemplateIds = array();
  23
  24         var $mAllowUserJs;
  25         var $mSuppressQuickbar = false;
  26         var $mOnloadHandler = '';
  27         var $mDoNothing = false;
  28         var $mContainsOldMagic = 0, $mContainsNewMagic = 0;
  29         var $mIsArticleRelated = true;
  30         protected $mParserOptions = null; // lazy initialised, use parserOptions()
  31
  32         var $mFeedLinks = array();
  33
  34         var $mEnableClientCache = true;
  35         var $mArticleBodyOnly = false;
  36
  37         var $mNewSectionLink = false;
  38         var $mHideNewSectionLink = false;
  39         var $mNoGallery = false;
  40         var $mPageTitleActionText = '';
  41         var $mParseWarnings = array();
  42         var $mSquidMaxage = 0;
  43         var $mRevisionId = null;
  44         protected $mTitle = null;
  45
  46         /**
  47          * An array of stylesheet filenames (relative from skins path), with options
  48          * for CSS media, IE conditions, and RTL/LTR direction.
  49          * For internal use; add settings in the skin via $this->addStyle()
  50          */
  51         var $styles = array();
  52
  53         private $mIndexPolicy = 'index';
  54         private $mFollowPolicy = 'follow';
  55
  56         /**
  57          * Constructor
  58          * Initialise private variables
  59          */
  60         function __construct() {
  61                 global $wgAllowUserJs;
  62                 $this->mAllowUserJs = $wgAllowUserJs;
  63         }
  64
  65         public function redirect( $url, $responsecode = '302' ) {
  66                 # Strip newlines as a paranoia check for header injection in PHP<5.1.2
  67                 $this->mRedirect = str_replace( "\n", '', $url );
  68                 $this->mRedirectCode = $responsecode;
  69         }
  70
  71         public function getRedirect() {
  72                 return $this->mRedirect;
  73         }
  74
  75         /**
  76          * Set the HTTP status code to send with the output.
  77          *
  78          * @param int $statusCode
  79          * @return nothing
  80          */
  81         function setStatusCode( $statusCode ) { $this->mStatusCode = $statusCode; }
  82
  83         /**
  84          * Add a new <meta> tag
  85          * To add an http-equiv meta tag, precede the name with "http:"
  86          *
  87          * @param $name tag name
  88          * @param $val tag value
  89          */
  90         function addMeta( $name, $val ) {
  91                 array_push( $this->mMetatags, array( $name, $val ) );
  92         }
  93
  94         function addKeyword( $text ) {
  95                 if( is_array( $text )) {
  96                         $this->mKeywords = array_merge( $this->mKeywords, $text );
  97                 } else {
  98                         array_push( $this->mKeywords, $text );
  99                 }
 100         }
 101         function addScript( $script ) {
 102                 $this->mScripts .= $script . "\n";
 103         }
 104
 105         /**
 106          * Register and add a stylesheet from an extension directory.
 107          * @param $url String path to sheet.  Provide either a full url (beginning
 108          *             with 'http', etc) or a relative path from the document root
 109          *             (beginning with '/').  Otherwise it behaves identically to
 110          *             addStyle() and draws from the /skins folder.
 111          */
 112         public function addExtensionStyle( $url ) {
 113                 array_push( $this->mExtStyles, $url );
 114         }
 115
 116         /**
 117          * Add a JavaScript file out of skins/common, or a given relative path.
 118          * @param string $file filename in skins/common or complete on-server path (/foo/bar.js)
 119          */
 120         function addScriptFile( $file ) {
 121                 global $wgStylePath, $wgScript, $wgUser;
 122                 global $wgEnableScriptLoader, $wgScriptPath;
 123
 124                 if( substr( $file, 0, 1 ) == '/' ) {
 125                         $path = $file;
 126                 } else {
 127                         $path = "{$wgStylePath}/common/{$file}";
 128                 }
 129
 130                 // If the class can be determined, use the addScriptClass method
 131                 $js_class = $this->getJsClassFromPath( $path );
 132                 if( $js_class ) {
 133                         $this->addScriptClass( $js_class );
 134                         return true;
 135                 }
 136
 137                 //do checks for wiki-titles
 138                 if( strpos( $path, $wgScript ) !== false ) {
 139                         $reqPath = str_replace( $wgScript . '?', '', $path );
 140                         $reqArgs = explode( '&', $reqPath );
 141                         $reqSet = array();
 142
 143                         foreach( $reqArgs as $arg ) {
 144                                 list( $key, $var ) = explode( '=', $arg );
 145                                 $reqSet[$key] = $var;
 146                         }
 147
 148                         if( isset( $reqSet['title'] ) && $reqSet != '' ) {
 149                                 $jsTitleClass = 'WT:' . $reqSet['title'];
 150                                 if( $wgEnableScriptLoader ) {
 151                                         // Extract any extra parameters (for now just skin)
 152                                         $ext_param = ( isset( $reqSet['useskin'] ) && $reqSet['useskin'] != '' )
 153                                                 ? '|useskin=' . ucfirst( $reqSet['useskin'] ) : '';
 154                                         $this->mScriptLoaderClassList[] = $jsTitleClass . $ext_param ;
 155                                         return true;
 156                                 }else{
 157                                         $this->addScript( Html::linkedScript(
 158                                                                 wfAppendQuery( $path, $this->getURIDparam( $jsTitleClass ) )
 159                                                         )
 160                                                 );
 161                                         return true;
 162                                 }
 163                         }
 164                 }
 165                 // If the script loader could not be used, just add the script to the header
 166                 $this->addScript( Html::linkedScript( wfAppendQuery( $path, $this->getURIDparam() ) ) );
 167         }
 168
 169         /**
 170          * Add the core scripts that are included on every page, for later output into the header
 171          *
 172          * this includes the conditional sitejs
 173          */
 174         function addCoreScripts2Top(){
 175                 global $wgEnableScriptLoader, $wgJSAutoloadLocalClasses, $wgScriptPath, $wgEnableJS2system;
 176                 global $wgUser, $wgJsMimeType;
 177                 // @todo We should deprecate wikibits in favor of some mv_embed pieces and jQuery
 178
 179                 if( $wgEnableJS2system ){
 180                         $core_classes = array( 'window.jQuery', 'mv_embed', 'wikibits' );
 181                 } else {
 182                         $core_classes = array( 'wikibits' );
 183                 }
 184
 185                 //make sure scripts are on top:
 186                 $postScripts = $this->mScripts;
 187                 $this->mScripts = '';
 188
 189                 if( $wgEnableScriptLoader ){
 190                         //directly add script_loader call for addCoreScripts2Top
 191                         $this->mScripts = $this->getScriptLoaderJs( $core_classes );
 192                 } else {
 193                         $so = '';
 194                         foreach( $core_classes as $js_class ){
 195                                 $this->addScriptClass( $js_class );
 196                         }
 197                 }
 198                 //now re-append any scripts that got added prior to the addCoreScripts2Top call
 199                 $this->mScripts = $this->mScripts . $postScripts;
 200         }
 201
 202         /**
 203          * @param string $js_class Name of the JavaScript class
 204          * @return boolean False if the class wasn't found, true on success
 205          */
 206         function addScriptClass( $js_class ){
 207                 global $wgDebugJavaScript, $wgJSAutoloadLocalClasses, $wgJSAutoloadClasses,
 208                                 $wgEnableScriptLoader, $wgStyleVersion, $wgScriptPath, $wgStylePath, $wgEnableJS2system;
 209
 210                 $path = jsScriptLoader::getJsPathFromClass( $js_class );
 211                 if( $path !== false ){
 212                         if( $wgEnableScriptLoader ) {
 213                                 // Register it with the script loader
 214                                 if( !in_array( $js_class, $this->mScriptLoaderClassList ) ) {
 215                                         $this->mScriptLoaderClassList[] = $js_class;
 216                                 }
 217                         } else {
 218                                 // Source the script directly
 219                                 $prefix = "skins/common/";
 220                                 if( substr( $path, 0, 1 ) == '/' ) {
 221                                         // straight path
 222                                 } elseif( substr( $path, 0, strlen( $prefix ) ) == $prefix ) {
 223                                         // Respect $wgStypePath
 224                                         $path = "{$wgStylePath}/common/" . substr( $path, strlen( $prefix ) );
 225                                 } else {
 226                                         $path = $wgScriptPath . '/' . $path;
 227                                 }
 228                                 $this->addScript( Html::linkedScript( $path . "?" . $this->getURIDparam( $js_class ) ) );
 229
 230                                 //merge in language text (if js2 is on and we have loadGM function)
 231                                 if( $wgEnableJS2system ){
 232                                         $inlineMsg = jsScriptLoader::getInlineLoadGMFromClass( $js_class );
 233                                         if( $inlineMsg != '' )
 234                                                 $this->addScript( Html::inlineScript( $inlineMsg ));
 235                                 }
 236                         }
 237                         return true;
 238                 }
 239                 print "could not find: $js_class\n";
 240                 wfDebug( __METHOD__ . ' could not find js_class: ' . $js_class );
 241                 return false; // could not find the class
 242         }
 243
 244         /**
 245          * Get the <script> tag which will invoke the script loader
 246          * @param $classAry A class array which, if given, overrides $this->mScriptLoaderClassList
 247          */
 248         function getScriptLoaderJs( $classAry = array() ) {
 249                 global $wgRequest, $wgDebugJavaScript;
 250                 // If no class array was provided, use mScriptLoaderClassList
 251                 if( !count( $classAry ) ) {
 252                         $classAry = $this->mScriptLoaderClassList;
 253                 }
 254                 $class_list = implode( ',', $classAry );
 255
 256                 $debug_param = ( $wgDebugJavaScript ||
 257                                                  $wgRequest->getVal( 'debug' ) == 'true' ||
 258                                                  $wgRequest->getVal( 'debug' ) == '1' )
 259                                          ? '&debug=true' : '';
 260
 261                 return Html::linkedScript( wfScript( 'mwScriptLoader' ) .
 262                         "?class={$class_list}{$debug_param}&" . $this->getURIDparam( $classAry) ) . "\n";
 263         }
 264
 265         /**
 266          * Get the unique request ID parameter for the script-loader request
 267          */
 268         function getURIDparam( $classAry = array() ) {
 269                 global $wgDebugJavaScript, $wgStyleVersion, $IP, $wgScriptModifiedCheck;
 270                 global $wgContLanguageCode;
 271
 272
 273                 if( $wgDebugJavaScript ) {
 274                         return 'urid=' . time();
 275                 } else {
 276                         //support single class_name attr
 277                         if( gettype( $classAry) == 'string'  ){
 278                                 $classAry = array( $classAry );
 279                         }
 280                         $ftime =  $frev = 0;
 281                         foreach( $classAry as $class ) {
 282                                 if( $wgScriptModifiedCheck ) {
 283                                         $js_path =  jsScriptLoader::getJsPathFromClass( $class );
 284                                         if( $js_path ) {
 285                                                 $cur_ftime = filemtime ( $IP ."/". $js_path );
 286                                                 if( $cur_ftime > $ftime )
 287                                                         $ftime = $cur_ftime;
 288                                         }
 289                                 }
 290                                 // Add the latest revision ID if the class set includes a WT (wiki title)
 291                                 if( substr($class, 0, 3) == 'WT:'){
 292                                         $title_str = substr($class, 3);
 293                                         $t = Title::newFromText( $title_str );
 294                                         if( $t && $t->exists() ) {
 295                                                 if( $t->getLatestRevID() > $frev  )
 296                                                         $frev = $t->getLatestRevID();
 297                                         }
 298                                 }
 299                         }
 300                         //build the actual unique request id:
 301                         $urid = "urid={$wgStyleVersion}";
 302
 303                         // Add the file modification time if set
 304                         if( $ftime != 0 )
 305                                 $urid .= "_" . $ftime;
 306
 307                         //add the wiki rev id if set
 308                         if( $frev != 0 )
 309                                 $urid.= "_" . $frev;
 310
 311
 312                         //Always the language key param to keep urls distinct per language
 313                         $urid.='&lang='.$wgContLanguageCode;
 314
 315                         return $urid;
 316                 }
 317         }
 318
 319         /**
 320          * Given a script path, get the JS class name, or false if no such path is registered.
 321          * @param $path string
 322          */
 323         function getJsClassFromPath( $path ) {
 324                 global $wgJSAutoloadClasses, $wgJSAutoloadLocalClasses, $wgScriptPath;
 325
 326                 $scriptLoaderPaths = array_merge( $wgJSAutoloadClasses,  $wgJSAutoloadLocalClasses );
 327                 foreach( $scriptLoaderPaths as $js_class => $js_path ) {
 328                         $js_path = "{$wgScriptPath}/{$js_path}";
 329                         if( $path == $js_path )
 330                                 return $js_class;
 331                 }
 332                 return false;
 333         }
 334
 335         /**
 336          * Add a self-contained script tag with the given contents
 337          * @param string $script JavaScript text, no <script> tags
 338          */
 339         function addInlineScript( $script ) {
 340                 $this->mScripts .= Html::inlineScript( "\n$script\n" ) . "\n";
 341         }
 342
 343         /**
 344          * Get all registered JS and CSS tags for the header.
 345          */
 346         function getScript() {
 347                 global $wgEnableScriptLoader;
 348                 if( $wgEnableScriptLoader ){
 349                         return $this->mScripts . "\n" . $this->getScriptLoaderJs() . $this->getHeadItems();
 350                 } else {
 351                         return $this->mScripts . $this->getHeadItems();
 352                 }
 353         }
 354
 355         function getHeadItems() {
 356                 $s = '';
 357                 foreach ( $this->mHeadItems as $item ) {
 358                         $s .= $item;
 359                 }
 360                 return $s;
 361         }
 362
 363         function addHeadItem( $name, $value ) {
 364                 $this->mHeadItems[$name] = $value;
 365         }
 366
 367         function hasHeadItem( $name ) {
 368                 return isset( $this->mHeadItems[$name] );
 369         }
 370
 371         function setETag($tag) { $this->mETag = $tag; }
 372         function setArticleBodyOnly($only) { $this->mArticleBodyOnly = $only; }
 373         function getArticleBodyOnly() { return $this->mArticleBodyOnly; }
 374
 375         function addLink( $linkarr ) {
 376                 # $linkarr should be an associative array of attributes. We'll escape on output.
 377                 array_push( $this->mLinktags, $linkarr );
 378         }
 379
 380         # Get all links added by extensions
 381         function getExtStyle() {
 382                 return $this->mExtStyles;
 383         }
 384
 385         function addMetadataLink( $linkarr ) {
 386                 # note: buggy CC software only reads first "meta" link
 387                 static $haveMeta = false;
 388                 $linkarr['rel'] = ($haveMeta) ? 'alternate meta' : 'meta';
 389                 $this->addLink( $linkarr );
 390                 $haveMeta = true;
 391         }
 392
 393         /**
 394          * checkLastModified tells the client to use the client-cached page if
 395          * possible. If sucessful, the OutputPage is disabled so that
 396          * any future call to OutputPage->output() have no effect.
 397          *
 398          * Side effect: sets mLastModified for Last-Modified header
 399          *
 400          * @return bool True iff cache-ok headers was sent.
 401          */
 402         function checkLastModified( $timestamp ) {
 403                 global $wgCachePages, $wgCacheEpoch, $wgUser, $wgRequest;
 404
 405                 if ( !$timestamp || $timestamp == '19700101000000' ) {
 406                         wfDebug( __METHOD__ . ": CACHE DISABLED, NO TIMESTAMP\n" );
 407                         return false;
 408                 }
 409                 if( !$wgCachePages ) {
 410                         wfDebug( __METHOD__ . ": CACHE DISABLED\n", false );
 411                         return false;
 412                 }
 413                 if( $wgUser->getOption( 'nocache' ) ) {
 414                         wfDebug( __METHOD__ . ": USER DISABLED CACHE\n", false );
 415                         return false;
 416                 }
 417
 418                 $timestamp = wfTimestamp( TS_MW, $timestamp );
 419                 $modifiedTimes = array(
 420                         'page' => $timestamp,
 421                         'user' => $wgUser->getTouched(),
 422                         'epoch' => $wgCacheEpoch
 423                 );
 424                 wfRunHooks( 'OutputPageCheckLastModified', array( &$modifiedTimes ) );
 425
 426                 $maxModified = max( $modifiedTimes );
 427                 $this->mLastModified = wfTimestamp( TS_RFC2822, $maxModified );
 428
 429                 if( empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
 430                         wfDebug( __METHOD__ . ": client did not send If-Modified-Since header\n", false );
 431                         return false;
 432                 }
 433
 434                 # Make debug info
 435                 $info = '';
 436                 foreach ( $modifiedTimes as $name => $value ) {
 437                         if ( $info !== '' ) {
 438                                 $info .= ', ';
 439                         }
 440                         $info .= "$name=" . wfTimestamp( TS_ISO_8601, $value );
 441                 }
 442
 443                 # IE sends sizes after the date like this:
 444                 # Wed, 20 Aug 2003 06:51:19 GMT; length=5202
 445                 # this breaks strtotime().
 446                 $clientHeader = preg_replace( '/;.*$/', '', $_SERVER["HTTP_IF_MODIFIED_SINCE"] );
 447
 448                 wfSuppressWarnings(); // E_STRICT system time bitching
 449                 $clientHeaderTime = strtotime( $clientHeader );
 450                 wfRestoreWarnings();
 451                 if ( !$clientHeaderTime ) {
 452                         wfDebug( __METHOD__ . ": unable to parse the client's If-Modified-Since header: $clientHeader\n" );
 453                         return false;
 454                 }
 455                 $clientHeaderTime = wfTimestamp( TS_MW, $clientHeaderTime );
 456
 457                 wfDebug( __METHOD__ . ": client sent If-Modified-Since: " .
 458                         wfTimestamp( TS_ISO_8601, $clientHeaderTime ) . "\n", false );
 459                 wfDebug( __METHOD__ . ": effective Last-Modified: " .
 460                         wfTimestamp( TS_ISO_8601, $maxModified ) . "\n", false );
 461                 if( $clientHeaderTime < $maxModified ) {
 462                         wfDebug( __METHOD__ . ": STALE, $info\n", false );
 463                         return false;
 464                 }
 465
 466                 # Not modified
 467                 # Give a 304 response code and disable body output
 468                 wfDebug( __METHOD__ . ": NOT MODIFIED, $info\n", false );
 469                 ini_set('zlib.output_compression', 0);
 470                 $wgRequest->response()->header( "HTTP/1.1 304 Not Modified" );
 471                 $this->sendCacheControl();
 472                 $this->disable();
 473
 474                 // Don't output a compressed blob when using ob_gzhandler;
 475                 // it's technically against HTTP spec and seems to confuse
 476                 // Firefox when the response gets split over two packets.
 477                 wfClearOutputBuffers();
 478
 479                 return true;
 480         }
 481
 482         function setPageTitleActionText( $text ) {
 483                 $this->mPageTitleActionText = $text;
 484         }
 485
 486         function getPageTitleActionText () {
 487                 if ( isset( $this->mPageTitleActionText ) ) {
 488                         return $this->mPageTitleActionText;
 489                 }
 490         }
 491
 492         /**
 493          * Set the robot policy for the page: <http://www.robotstxt.org/meta.html>
 494          *
 495          * @param $policy string The literal string to output as the contents of
 496          *   the meta tag.  Will be parsed according to the spec and output in
 497          *   standardized form.
 498          * @return null
 499          */
 500         public function setRobotPolicy( $policy ) {
 501                 $policy = Article::formatRobotPolicy( $policy );
 502
 503                 if( isset( $policy['index'] ) ){
 504                         $this->setIndexPolicy( $policy['index'] );
 505                 }
 506                 if( isset( $policy['follow'] ) ){
 507                         $this->setFollowPolicy( $policy['follow'] );
 508                 }
 509         }
 510
 511         /**
 512          * Set the index policy for the page, but leave the follow policy un-
 513          * touched.
 514          *
 515          * @param $policy string Either 'index' or 'noindex'.
 516          * @return null
 517          */
 518         public function setIndexPolicy( $policy ) {
 519                 $policy = trim( $policy );
 520                 if( in_array( $policy, array( 'index', 'noindex' ) ) ) {
 521                         $this->mIndexPolicy = $policy;
 522                 }
 523         }
 524
 525         /**
 526          * Set the follow policy for the page, but leave the index policy un-
 527          * touched.
 528          *
 529          * @param $policy string Either 'follow' or 'nofollow'.
 530          * @return null
 531          */
 532         public function setFollowPolicy( $policy ) {
 533                 $policy = trim( $policy );
 534                 if( in_array( $policy, array( 'follow', 'nofollow' ) ) ) {
 535                         $this->mFollowPolicy = $policy;
 536                 }
 537         }
 538
 539         /**
 540          * "HTML title" means the contents of <title>. It is stored as plain, unescaped text and will be run through htmlspecialchars in the skin file.
 541          */
 542         public function setHTMLTitle( $name ) {
 543                 $this->mHTMLtitle = $name;
 544         }
 545
 546         /**
 547          * "Page title" means the contents of <h1>. It is stored as a valid HTML fragment.
 548          * This function allows good tags like <sup> in the <h1> tag, but not bad tags like <script>.
 549          * This function automatically sets <title> to the same content as <h1> but with all tags removed.
 550          * Bad tags that were escaped in <h1> will still be escaped in <title>, and good tags like <i> will be dropped entirely.
 551          */
 552         public function setPageTitle( $name ) {
 553                 global $wgContLang;
 554                 $name = $wgContLang->convert( $name, true );
 555                 # change "<script>foo&bar</script>" to "&lt;script&gt;foo&amp;bar&lt;/script&gt;"
 556                 # but leave "<i>foobar</i>" alone
 557                 $nameWithTags = Sanitizer::normalizeCharReferences( Sanitizer::removeHTMLtags( $name ) );
 558                 $this->mPagetitle = $nameWithTags;
 559
 560                 $taction =  $this->getPageTitleActionText();
 561                 if( !empty( $taction ) ) {
 562                         $name .= ' - '.$taction;
 563                 }
 564
 565                 # change "<i>foo&amp;bar</i>" to "foo&bar"
 566                 $this->setHTMLTitle( wfMsg( 'pagetitle', Sanitizer::stripAllTags( $nameWithTags ) ) );
 567         }
 568
 569         public function setTitle( $t ) {
 570                 $this->mTitle = $t;
 571         }
 572
 573         public function getTitle() {
 574                 if ( $this->mTitle instanceof Title ) {
 575                         return $this->mTitle;
 576                 }
 577                 else {
 578                         wfDebug( __METHOD__ . ' called and $mTitle is null. Return $wgTitle for sanity' );
 579                         global $wgTitle;
 580                         return $wgTitle;
 581                 }
 582         }
 583
 584         public function getHTMLTitle() { return $this->mHTMLtitle; }
 585         public function getPageTitle() { return $this->mPagetitle; }
 586         public function setSubtitle( $str ) { $this->mSubtitle = /*$this->parse(*/$str/*)*/; } // @bug 2514
 587         public function appendSubtitle( $str ) { $this->mSubtitle .= /*$this->parse(*/$str/*)*/; } // @bug 2514
 588         public function getSubtitle() { return $this->mSubtitle; }
 589         public function isArticle() { return $this->mIsarticle; }
 590         public function setPrintable() { $this->mPrintable = true; }
 591         public function isPrintable() { return $this->mPrintable; }
 592         public function getFeedAppendQuery() { return $this->mFeedLinksAppendQuery; }
 593         public function setOnloadHandler( $js ) { $this->mOnloadHandler = $js; }
 594         public function getOnloadHandler() { return $this->mOnloadHandler; }
 595         public function disable() { $this->mDoNothing = true; }
 596         public function isDisabled() { return $this->mDoNothing; }
 597
 598         public function setSyndicated( $show = true ) { $this->mShowFeedLinks = $show; }
 599
 600         public function setFeedAppendQuery( $val ) {
 601                 global $wgFeedClasses;
 602
 603                 $this->mFeedLinks = array();
 604
 605                 foreach( $wgFeedClasses as $type => $class ) {
 606                         $query = "feed=$type&".$val;
 607                         $this->mFeedLinks[$type] = $this->getTitle()->getLocalURL( $query );
 608                 }
 609         }
 610
 611         public function addFeedLink( $format, $href ) {
 612                 $this->mFeedLinks[$format] = $href;
 613         }
 614
 615         public function isSyndicated() { return count($this->mFeedLinks); }
 616
 617         public function setArticleRelated( $v ) {
 618                 $this->mIsArticleRelated = $v;
 619                 if ( !$v ) {
 620                         $this->mIsarticle = false;
 621                 }
 622         }
 623         public function setArticleFlag( $v ) {
 624                 $this->mIsarticle = $v;
 625                 if ( $v ) {
 626                         $this->mIsArticleRelated = $v;
 627                 }
 628         }
 629
 630         public function isArticleRelated() { return $this->mIsArticleRelated; }
 631
 632         public function getLanguageLinks() { return $this->mLanguageLinks; }
 633         public function addLanguageLinks($newLinkArray) {
 634                 $this->mLanguageLinks += $newLinkArray;
 635         }
 636         public function setLanguageLinks($newLinkArray) {
 637                 $this->mLanguageLinks = $newLinkArray;
 638         }
 639
 640         public function getCategoryLinks() {
 641                 return $this->mCategoryLinks;
 642         }
 643
 644         /**
 645          * Add an array of categories, with names in the keys
 646          */
 647         public function addCategoryLinks( $categories ) {
 648                 global $wgUser, $wgContLang;
 649
 650                 if ( !is_array( $categories ) || count( $categories ) == 0 ) {
 651                         return;
 652                 }
 653
 654                 # Add the links to a LinkBatch
 655                 $arr = array( NS_CATEGORY => $categories );
 656                 $lb = new LinkBatch;
 657                 $lb->setArray( $arr );
 658
 659                 # Fetch existence plus the hiddencat property
 660                 $dbr = wfGetDB( DB_SLAVE );
 661                 $pageTable = $dbr->tableName( 'page' );
 662                 $where = $lb->constructSet( 'page', $dbr );
 663                 $propsTable = $dbr->tableName( 'page_props' );
 664                 $sql = "SELECT page_id, page_namespace, page_title, page_len, page_is_redirect, pp_value
 665                         FROM $pageTable LEFT JOIN $propsTable ON pp_propname='hiddencat' AND pp_page=page_id WHERE $where";
 666                 $res = $dbr->query( $sql, __METHOD__ );
 667
 668                 # Add the results to the link cache
 669                 $lb->addResultToCache( LinkCache::singleton(), $res );
 670
 671                 # Set all the values to 'normal'. This can be done with array_fill_keys in PHP 5.2.0+
 672                 $categories = array_combine( array_keys( $categories ),
 673                         array_fill( 0, count( $categories ), 'normal' ) );
 674
 675                 # Mark hidden categories
 676                 foreach ( $res as $row ) {
 677                         if ( isset( $row->pp_value ) ) {
 678                                 $categories[$row->page_title] = 'hidden';
 679                         }
 680                 }
 681
 682                 # Add the remaining categories to the skin
 683                 if ( wfRunHooks( 'OutputPageMakeCategoryLinks', array( &$this, $categories, &$this->mCategoryLinks ) ) ) {
 684                         $sk = $wgUser->getSkin();
 685                         foreach ( $categories as $category => $type ) {
 686                                 $origcategory = $category;
 687                                 $title = Title::makeTitleSafe( NS_CATEGORY, $category );
 688                                 $wgContLang->findVariantLink( $category, $title, true );
 689                                 if ( $category != $origcategory )
 690                                         if ( array_key_exists( $category, $categories ) )
 691                                                 continue;
 692                                 $text = $wgContLang->convertHtml( $title->getText() );
 693                                 $this->mCategoryLinks[$type][] = $sk->link( $title, $text );
 694                         }
 695                 }
 696         }
 697
 698         public function setCategoryLinks($categories) {
 699                 $this->mCategoryLinks = array();
 700                 $this->addCategoryLinks($categories);
 701         }
 702
 703         public function suppressQuickbar() { $this->mSuppressQuickbar = true; }
 704         public function isQuickbarSuppressed() { return $this->mSuppressQuickbar; }
 705
 706         public function disallowUserJs() { $this->mAllowUserJs = false; }
 707         public function isUserJsAllowed() { return $this->mAllowUserJs; }
 708
 709         public function prependHTML( $text ) { $this->mBodytext = $text . $this->mBodytext; }
 710         public function addHTML( $text ) { $this->mBodytext .= $text; }
 711         public function clearHTML() { $this->mBodytext = ''; }
 712         public function getHTML() { return $this->mBodytext; }
 713         public function debug( $text ) { $this->mDebugtext .= $text; }
 714
 715         /* @deprecated */
 716         public function setParserOptions( $options ) {
 717                 wfDeprecated( __METHOD__ );
 718                 return $this->parserOptions( $options );
 719         }
 720
 721         public function parserOptions( $options = null ) {
 722                 if ( !$this->mParserOptions ) {
 723                         $this->mParserOptions = new ParserOptions;
 724                 }
 725                 return wfSetVar( $this->mParserOptions, $options );
 726         }
 727
 728         /**
 729          * Set the revision ID which will be seen by the wiki text parser
 730          * for things such as embedded {{REVISIONID}} variable use.
 731          * @param mixed $revid an integer, or NULL
 732          * @return mixed previous value
 733          */
 734         public function setRevisionId( $revid ) {
 735                 $val = is_null( $revid ) ? null : intval( $revid );
 736                 return wfSetVar( $this->mRevisionId, $val );
 737         }
 738
 739         public function getRevisionId() {
 740                 return $this->mRevisionId;
 741         }
 742
 743         /**
 744          * Convert wikitext to HTML and add it to the buffer
 745          * Default assumes that the current page title will
 746          * be used.
 747          *
 748          * @param string $text
 749          * @param bool   $linestart
 750          */
 751         public function addWikiText( $text, $linestart = true ) {
 752                 $title = $this->getTitle(); // Work arround E_STRICT
 753                 $this->addWikiTextTitle( $text, $title, $linestart );
 754         }
 755
 756         public function addWikiTextWithTitle($text, &$title, $linestart = true) {
 757                 $this->addWikiTextTitle($text, $title, $linestart);
 758         }
 759
 760         function addWikiTextTitleTidy($text, &$title, $linestart = true) {
 761                 $this->addWikiTextTitle( $text, $title, $linestart, true );
 762         }
 763
 764         public function addWikiTextTitle($text, &$title, $linestart, $tidy = false) {
 765                 global $wgParser;
 766
 767                 wfProfileIn( __METHOD__ );
 768
 769                 wfIncrStats( 'pcache_not_possible' );
 770
 771                 $popts = $this->parserOptions();
 772                 $oldTidy = $popts->setTidy( $tidy );
 773
 774                 $parserOutput = $wgParser->parse( $text, $title, $popts,
 775                         $linestart, true, $this->mRevisionId );
 776
 777                 $popts->setTidy( $oldTidy );
 778
 779                 $this->addParserOutput( $parserOutput );
 780
 781                 wfProfileOut( __METHOD__ );
 782         }
 783
 784         /**
 785          * @todo document
 786          * @param ParserOutput object &$parserOutput
 787          */
 788         public function addParserOutputNoText( &$parserOutput ) {
 789                 global $wgExemptFromUserRobotsControl, $wgContentNamespaces;
 790
 791                 $this->mLanguageLinks += $parserOutput->getLanguageLinks();
 792                 $this->addCategoryLinks( $parserOutput->getCategories() );
 793                 $this->mNewSectionLink = $parserOutput->getNewSection();
 794                 $this->mHideNewSectionLink = $parserOutput->getHideNewSection();
 795
 796                 $this->mParseWarnings = $parserOutput->getWarnings();
 797                 if ( $parserOutput->getCacheTime() == -1 ) {
 798                         $this->enableClientCache( false );
 799                 }
 800                 $this->mNoGallery = $parserOutput->getNoGallery();
 801                 $this->mHeadItems = array_merge( $this->mHeadItems, (array)$parserOutput->mHeadItems );
 802                 // Versioning...
 803                 foreach ( (array)$parserOutput->mTemplateIds as $ns => $dbks ) {
 804                         if ( isset( $this->mTemplateIds[$ns] ) ) {
 805                                 $this->mTemplateIds[$ns] = $dbks + $this->mTemplateIds[$ns];
 806                         } else {
 807                                 $this->mTemplateIds[$ns] = $dbks;
 808                         }
 809                 }
 810                 // Page title
 811                 if( ( $dt = $parserOutput->getDisplayTitle() ) !== false )
 812                         $this->setPageTitle( $dt );
 813                 else if ( ( $title = $parserOutput->getTitleText() ) != '' )
 814                         $this->setPageTitle( $title );
 815
 816                 // Hooks registered in the object
 817                 global $wgParserOutputHooks;
 818                 foreach ( $parserOutput->getOutputHooks() as $hookInfo ) {
 819                         list( $hookName, $data ) = $hookInfo;
 820                         if ( isset( $wgParserOutputHooks[$hookName] ) ) {
 821                                 call_user_func( $wgParserOutputHooks[$hookName], $this, $parserOutput, $data );
 822                         }
 823                 }
 824
 825                 wfRunHooks( 'OutputPageParserOutput', array( &$this, $parserOutput ) );
 826         }
 827
 828         /**
 829          * @todo document
 830          * @param ParserOutput &$parserOutput
 831          */
 832         function addParserOutput( &$parserOutput ) {
 833                 $this->addParserOutputNoText( $parserOutput );
 834                 $text = $parserOutput->getText();
 835                 wfRunHooks( 'OutputPageBeforeHTML',array( &$this, &$text ) );
 836                 $this->addHTML( $text );
 837         }
 838
 839         /**
 840          * Add wikitext to the buffer, assuming that this is the primary text for a page view
 841          * Saves the text into the parser cache if possible.
 842          *
 843          * @param string  $text
 844          * @param Article $article
 845          * @param bool    $cache
 846          * @deprecated Use Article::outputWikitext
 847          */
 848         public function addPrimaryWikiText( $text, $article, $cache = true ) {
 849                 global $wgParser;
 850
 851                 wfDeprecated( __METHOD__ );
 852
 853                 $popts = $this->parserOptions();
 854                 $popts->setTidy(true);
 855                 $parserOutput = $wgParser->parse( $text, $article->mTitle,
 856                         $popts, true, true, $this->mRevisionId );
 857                 $popts->setTidy(false);
 858                 if ( $cache && $article && $parserOutput->getCacheTime() != -1 ) {
 859                         $parserCache = ParserCache::singleton();
 860                         $parserCache->save( $parserOutput, $article, $popts);
 861                 }
 862
 863                 $this->addParserOutput( $parserOutput );
 864         }
 865
 866         /**
 867          * @deprecated use addWikiTextTidy()
 868          */
 869         public function addSecondaryWikiText( $text, $linestart = true ) {
 870                 wfDeprecated( __METHOD__ );
 871                 $this->addWikiTextTitleTidy($text, $this->getTitle(), $linestart);
 872         }
 873
 874         /**
 875          * Add wikitext with tidy enabled
 876          */
 877         public function addWikiTextTidy(  $text, $linestart = true ) {
 878                 $title = $this->getTitle();
 879                 $this->addWikiTextTitleTidy($text, $title, $linestart);
 880         }
 881
 882
 883         /**
 884          * Add the output of a QuickTemplate to the output buffer
 885          *
 886          * @param QuickTemplate $template
 887          */
 888         public function addTemplate( &$template ) {
 889                 ob_start();
 890                 $template->execute();
 891                 $this->addHTML( ob_get_contents() );
 892                 ob_end_clean();
 893         }
 894
 895         /**
 896          * Parse wikitext and return the HTML.
 897          *
 898          * @param string $text
 899          * @param bool   $linestart Is this the start of a line?
 900          * @param bool   $interface ??
 901          */
 902         public function parse( $text, $linestart = true, $interface = false ) {
 903                 global $wgParser;
 904                 if( is_null( $this->getTitle() ) ) {
 905                         throw new MWException( 'Empty $mTitle in ' . __METHOD__ );
 906                 }
 907                 $popts = $this->parserOptions();
 908                 if ( $interface) { $popts->setInterfaceMessage(true); }
 909                 $parserOutput = $wgParser->parse( $text, $this->getTitle(), $popts,
 910                         $linestart, true, $this->mRevisionId );
 911                 if ( $interface) { $popts->setInterfaceMessage(false); }
 912                 return $parserOutput->getText();
 913         }
 914
 915         /** Parse wikitext, strip paragraphs, and return the HTML. */
 916         public function parseInline( $text, $linestart = true, $interface = false ) {
 917                 $parsed = $this->parse( $text, $linestart, $interface );
 918
 919                 $m = array();
 920                 if ( preg_match( '/^<p>(.*)\n?<\/p>\n?/sU', $parsed, $m ) ) {
 921                         $parsed = $m[1];
 922                 }
 923
 924                 return $parsed;
 925         }
 926
 927         /**
 928          * @param Article $article
 929          * @param User    $user
 930          *
 931          * @deprecated
 932          *
 933          * @return bool True if successful, else false.
 934          */
 935         public function tryParserCache( &$article ) {
 936                 wfDeprecated( __METHOD__ );
 937                 $parserOutput = ParserCache::singleton()->get( $article, $article->getParserOptions() );
 938
 939                 if ($parserOutput !== false) {
 940                         $this->addParserOutput( $parserOutput );
 941                         return true;
 942                 } else {
 943                         return false;
 944                 }
 945         }
 946
 947         /**
 948          * @param int $maxage Maximum cache time on the Squid, in seconds.
 949          */
 950         public function setSquidMaxage( $maxage ) {
 951                 $this->mSquidMaxage = $maxage;
 952         }
 953
 954         /**
 955          * Use enableClientCache(false) to force it to send nocache headers
 956          * @param $state ??
 957          */
 958         public function enableClientCache( $state ) {
 959                 return wfSetVar( $this->mEnableClientCache, $state );
 960         }
 961
 962         function getCacheVaryCookies() {
 963                 global $wgCookiePrefix, $wgCacheVaryCookies;
 964                 static $cookies;
 965                 if ( $cookies === null ) {
 966                         $cookies = array_merge(
 967                                 array(
 968                                         "{$wgCookiePrefix}Token",
 969                                         "{$wgCookiePrefix}LoggedOut",
 970                                         session_name()
 971                                 ),
 972                                 $wgCacheVaryCookies
 973                         );
 974                         wfRunHooks('GetCacheVaryCookies', array( $this, &$cookies ) );
 975                 }
 976                 return $cookies;
 977         }
 978
 979         function uncacheableBecauseRequestVars() {
 980                 global $wgRequest;
 981                 return  $wgRequest->getText('useskin', false) === false
 982                         && $wgRequest->getText('uselang', false) === false;
 983         }
 984
 985         /**
 986          * Check if the request has a cache-varying cookie header
 987          * If it does, it's very important that we don't allow public caching
 988          */
 989         function haveCacheVaryCookies() {
 990                 global $wgRequest;
 991                 $cookieHeader = $wgRequest->getHeader( 'cookie' );
 992                 if ( $cookieHeader === false ) {
 993                         return false;
 994                 }
 995                 $cvCookies = $this->getCacheVaryCookies();
 996                 foreach ( $cvCookies as $cookieName ) {
 997                         # Check for a simple string match, like the way squid does it
 998                         if ( strpos( $cookieHeader, $cookieName ) ) {
 999                                 wfDebug( __METHOD__.": found $cookieName\n" );
1000                                 return true;
1001                         }
1002                 }
1003                 wfDebug( __METHOD__.": no cache-varying cookies found\n" );
1004                 return false;
1005         }
1006
1007         /** Get a complete X-Vary-Options header */
1008         public function getXVO() {
1009                 $cvCookies = $this->getCacheVaryCookies();
1010                 $xvo = 'X-Vary-Options: Accept-Encoding;list-contains=gzip,Cookie;';
1011                 $first = true;
1012                 foreach ( $cvCookies as $cookieName ) {
1013                         if ( $first ) {
1014                                 $first = false;
1015                         } else {
1016                                 $xvo .= ';';
1017                         }
1018                         $xvo .= 'string-contains=' . $cookieName;
1019                 }
1020                 return $xvo;
1021         }
1022
1023         public function sendCacheControl() {
1024                 global $wgUseSquid, $wgUseESI, $wgUseETag, $wgSquidMaxage, $wgRequest, $wgUseXVO;
1025
1026                 $response = $wgRequest->response();
1027                 if ($wgUseETag && $this->mETag)
1028                         $response->header("ETag: $this->mETag");
1029
1030                 # don't serve compressed data to clients who can't handle it
1031                 # maintain different caches for logged-in users and non-logged in ones
1032                 $response->header( 'Vary: Accept-Encoding, Cookie' );
1033
1034                 if ( $wgUseXVO ) {
1035                         # Add an X-Vary-Options header for Squid with Wikimedia patches
1036                         $response->header( $this->getXVO() );
1037                 }
1038
1039                 if( !$this->uncacheableBecauseRequestVars() && $this->mEnableClientCache ) {
1040                         if( $wgUseSquid && session_id() == '' &&
1041                           ! $this->isPrintable() && $this->mSquidMaxage != 0 && !$this->haveCacheVaryCookies() )
1042                         {
1043                                 if ( $wgUseESI ) {
1044                                         # We'll purge the proxy cache explicitly, but require end user agents
1045                                         # to revalidate against the proxy on each visit.
1046                                         # Surrogate-Control controls our Squid, Cache-Control downstream caches
1047                                         wfDebug( __METHOD__ . ": proxy caching with ESI; {$this->mLastModified} **\n", false );
1048                                         # start with a shorter timeout for initial testing
1049                                         # header( 'Surrogate-Control: max-age=2678400+2678400, content="ESI/1.0"');
1050                                         $response->header( 'Surrogate-Control: max-age='.$wgSquidMaxage.'+'.$this->mSquidMaxage.', content="ESI/1.0"');
1051                                         $response->header( 'Cache-Control: s-maxage=0, must-revalidate, max-age=0' );
1052                                 } else {
1053                                         # We'll purge the proxy cache for anons explicitly, but require end user agents
1054                                         # to revalidate against the proxy on each visit.
1055                                         # IMPORTANT! The Squid needs to replace the Cache-Control header with
1056                                         # Cache-Control: s-maxage=0, must-revalidate, max-age=0
1057                                         wfDebug( __METHOD__ . ": local proxy caching; {$this->mLastModified} **\n", false );
1058                                         # start with a shorter timeout for initial testing
1059                                         # header( "Cache-Control: s-maxage=2678400, must-revalidate, max-age=0" );
1060                                         $response->header( 'Cache-Control: s-maxage='.$this->mSquidMaxage.', must-revalidate, max-age=0' );
1061                                 }
1062                         } else {
1063                                 # We do want clients to cache if they can, but they *must* check for updates
1064                                 # on revisiting the page.
1065                                 wfDebug( __METHOD__ . ": private caching; {$this->mLastModified} **\n", false );
1066                                 $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1067                                 $response->header( "Cache-Control: private, must-revalidate, max-age=0" );
1068                         }
1069                         if($this->mLastModified) {
1070                                 $response->header( "Last-Modified: {$this->mLastModified}" );
1071                         }
1072                 } else {
1073                         wfDebug( __METHOD__ . ": no caching **\n", false );
1074
1075                         # In general, the absence of a last modified header should be enough to prevent
1076                         # the client from using its cache. We send a few other things just to make sure.
1077                         $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1078                         $response->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
1079                         $response->header( 'Pragma: no-cache' );
1080                 }
1081         }
1082
1083         /**
1084          * Finally, all the text has been munged and accumulated into
1085          * the object, let's actually output it:
1086          */
1087         public function output() {
1088                 global $wgUser, $wgOutputEncoding, $wgRequest;
1089                 global $wgContLanguageCode, $wgDebugRedirects, $wgMimeType;
1090                 global $wgUseAjax, $wgAjaxWatch;
1091                 global $wgEnableMWSuggest, $wgUniversalEditButton;
1092                 global $wgArticle;
1093
1094                 if( $this->mDoNothing ){
1095                         return;
1096                 }
1097                 wfProfileIn( __METHOD__ );
1098                 if ( '' != $this->mRedirect ) {
1099                         # Standards require redirect URLs to be absolute
1100                         $this->mRedirect = wfExpandUrl( $this->mRedirect );
1101                         if( $this->mRedirectCode == '301') {
1102                                 if( !$wgDebugRedirects ) {
1103                                         $wgRequest->response()->header("HTTP/1.1 {$this->mRedirectCode} Moved Permanently");
1104                                 }
1105                                 $this->mLastModified = wfTimestamp( TS_RFC2822 );
1106                         }
1107                         $this->sendCacheControl();
1108
1109                         $wgRequest->response()->header("Content-Type: text/html; charset=utf-8");
1110                         if( $wgDebugRedirects ) {
1111                                 $url = htmlspecialchars( $this->mRedirect );
1112                                 print "<html>\n<head>\n<title>Redirect</title>\n</head>\n<body>\n";
1113                                 print "<p>Location: <a href=\"$url\">$url</a></p>\n";
1114                                 print "</body>\n</html>\n";
1115                         } else {
1116                                 $wgRequest->response()->header( 'Location: '.$this->mRedirect );
1117                         }
1118                         wfProfileOut( __METHOD__ );
1119                         return;
1120                 }
1121                 elseif ( $this->mStatusCode )
1122                 {
1123                         $statusMessage = array(
1124                                 100 => 'Continue',
1125                                 101 => 'Switching Protocols',
1126                                 102 => 'Processing',
1127                                 200 => 'OK',
1128                                 201 => 'Created',
1129                                 202 => 'Accepted',
1130                                 203 => 'Non-Authoritative Information',
1131                                 204 => 'No Content',
1132                                 205 => 'Reset Content',
1133                                 206 => 'Partial Content',
1134                                 207 => 'Multi-Status',
1135                                 300 => 'Multiple Choices',
1136                                 301 => 'Moved Permanently',
1137                                 302 => 'Found',
1138                                 303 => 'See Other',
1139                                 304 => 'Not Modified',
1140                                 305 => 'Use Proxy',
1141                                 307 => 'Temporary Redirect',
1142                                 400 => 'Bad Request',
1143                                 401 => 'Unauthorized',
1144                                 402 => 'Payment Required',
1145                                 403 => 'Forbidden',
1146                                 404 => 'Not Found',
1147                                 405 => 'Method Not Allowed',
1148                                 406 => 'Not Acceptable',
1149                                 407 => 'Proxy Authentication Required',
1150                                 408 => 'Request Timeout',
1151                                 409 => 'Conflict',
1152                                 410 => 'Gone',
1153                                 411 => 'Length Required',
1154                                 412 => 'Precondition Failed',
1155                                 413 => 'Request Entity Too Large',
1156                                 414 => 'Request-URI Too Large',
1157                                 415 => 'Unsupported Media Type',
1158                                 416 => 'Request Range Not Satisfiable',
1159                                 417 => 'Expectation Failed',
1160                                 422 => 'Unprocessable Entity',
1161                                 423 => 'Locked',
1162                                 424 => 'Failed Dependency',
1163                                 500 => 'Internal Server Error',
1164                                 501 => 'Not Implemented',
1165                                 502 => 'Bad Gateway',
1166                                 503 => 'Service Unavailable',
1167                                 504 => 'Gateway Timeout',
1168                                 505 => 'HTTP Version Not Supported',
1169                                 507 => 'Insufficient Storage'
1170                         );
1171
1172                         if ( $statusMessage[$this->mStatusCode] )
1173                                 $wgRequest->response()->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $statusMessage[$this->mStatusCode] );
1174                 }
1175
1176                 $sk = $wgUser->getSkin();
1177
1178                 // Add our core scripts to output
1179                 $this->addCoreScripts2Top();
1180
1181                 if ( $wgUseAjax ) {
1182                         $this->addScriptFile( 'ajax.js' );
1183
1184                         wfRunHooks( 'AjaxAddScript', array( &$this ) );
1185
1186                         if( $wgAjaxWatch && $wgUser->isLoggedIn() ) {
1187                                 $this->addScriptFile( 'ajaxwatch.js' );
1188                         }
1189
1190                         if ( $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ){
1191                                 $this->addScriptFile( 'mwsuggest.js' );
1192                         }
1193                 }
1194
1195                 if( $wgUser->getBoolOption( 'editsectiononrightclick' ) ) {
1196                         $this->addScriptFile( 'rightclickedit.js' );
1197                 }
1198
1199                 global $wgUseAJAXCategories, $wgEnableJS2system;
1200                 if ($wgUseAJAXCategories && $wgEnableJS2system) {
1201                         global $wgAJAXCategoriesNamespaces;
1202
1203                         $title = $this->getTitle();
1204
1205                         if( empty( $wgAJAXCategoriesNamespaces ) || in_array( $title->getNamespace(), $wgAJAXCategoriesNamespaces ) ) {
1206                                 $this->addScriptClass( 'ajaxCategories' );
1207                         }
1208                 }
1209
1210                 if( $wgUniversalEditButton ) {
1211                         if( isset( $wgArticle ) && $this->getTitle() && $this->getTitle()->quickUserCan( 'edit' )
1212                                 && ( $this->getTitle()->exists() || $this->getTitle()->quickUserCan( 'create' ) ) ) {
1213                                 // Original UniversalEditButton
1214                                 $msg = wfMsg('edit');
1215                                 $this->addLink( array(
1216                                         'rel' => 'alternate',
1217                                         'type' => 'application/x-wiki',
1218                                         'title' => $msg,
1219                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1220                                 ) );
1221                                 // Alternate edit link
1222                                 $this->addLink( array(
1223                                         'rel' => 'edit',
1224                                         'title' => $msg,
1225                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1226                                 ) );
1227                         }
1228                 }
1229
1230                 # Buffer output; final headers may depend on later processing
1231                 ob_start();
1232
1233                 $wgRequest->response()->header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
1234                 $wgRequest->response()->header( 'Content-language: '.$wgContLanguageCode );
1235
1236                 if ($this->mArticleBodyOnly) {
1237                         $this->out($this->mBodytext);
1238                 } else {
1239                         // Hook that allows last minute changes to the output page, e.g.
1240                         // adding of CSS or Javascript by extensions.
1241                         wfRunHooks( 'BeforePageDisplay', array( &$this, &$sk ) );
1242
1243                         wfProfileIn( 'Output-skin' );
1244                         $sk->outputPage( $this );
1245                         wfProfileOut( 'Output-skin' );
1246                 }
1247
1248                 $this->sendCacheControl();
1249                 ob_end_flush();
1250                 wfProfileOut( __METHOD__ );
1251         }
1252
1253         /**
1254          * Actually output something with print(). Performs an iconv to the
1255          * output encoding, if needed.
1256          * @param string $ins The string to output
1257          */
1258         public function out( $ins ) {
1259                 global $wgInputEncoding, $wgOutputEncoding, $wgContLang;
1260                 if ( 0 == strcmp( $wgInputEncoding, $wgOutputEncoding ) ) {
1261                         $outs = $ins;
1262                 } else {
1263                         $outs = $wgContLang->iconv( $wgInputEncoding, $wgOutputEncoding, $ins );
1264                         if ( false === $outs ) { $outs = $ins; }
1265                 }
1266                 print $outs;
1267         }
1268
1269         /**
1270          * @todo document
1271          */
1272         public static function setEncodings() {
1273                 global $wgInputEncoding, $wgOutputEncoding;
1274                 global $wgContLang;
1275
1276                 $wgInputEncoding = strtolower( $wgInputEncoding );
1277
1278                 if ( empty( $_SERVER['HTTP_ACCEPT_CHARSET'] ) ) {
1279                         $wgOutputEncoding = strtolower( $wgOutputEncoding );
1280                         return;
1281                 }
1282                 $wgOutputEncoding = $wgInputEncoding;
1283         }
1284
1285         /**
1286          * Deprecated, use wfReportTime() instead.
1287          * @return string
1288          * @deprecated
1289          */
1290         public function reportTime() {
1291                 wfDeprecated( __METHOD__ );
1292                 $time = wfReportTime();
1293                 return $time;
1294         }
1295
1296         /**
1297          * Produce a "user is blocked" page.
1298          *
1299          * @param bool $return Whether to have a "return to $wgTitle" message or not.
1300          * @return nothing
1301          */
1302         function blockedPage( $return = true ) {
1303                 global $wgUser, $wgContLang, $wgLang;
1304
1305                 $this->setPageTitle( wfMsg( 'blockedtitle' ) );
1306                 $this->setRobotPolicy( 'noindex,nofollow' );
1307                 $this->setArticleRelated( false );
1308
1309                 $name = User::whoIs( $wgUser->blockedBy() );
1310                 $reason = $wgUser->blockedFor();
1311                 if( $reason == '' ) {
1312                         $reason = wfMsg( 'blockednoreason' );
1313                 }
1314                 $blockTimestamp = $wgLang->timeanddate( wfTimestamp( TS_MW, $wgUser->mBlock->mTimestamp ), true );
1315                 $ip = wfGetIP();
1316
1317                 $link = '[[' . $wgContLang->getNsText( NS_USER ) . ":{$name}|{$name}]]";
1318
1319                 $blockid = $wgUser->mBlock->mId;
1320
1321                 $blockExpiry = $wgUser->mBlock->mExpiry;
1322                 if ( $blockExpiry == 'infinity' ) {
1323                         // Entry in database (table ipblocks) is 'infinity' but 'ipboptions' uses 'infinite' or 'indefinite'
1324                         // Search for localization in 'ipboptions'
1325                         $scBlockExpiryOptions = wfMsg( 'ipboptions' );
1326                         foreach ( explode( ',', $scBlockExpiryOptions ) as $option ) {
1327                                 if ( strpos( $option, ":" ) === false )
1328                                         continue;
1329                                 list( $show, $value ) = explode( ":", $option );
1330                                 if ( $value == 'infinite' || $value == 'indefinite' ) {
1331                                         $blockExpiry = $show;
1332                                         break;
1333                                 }
1334                         }
1335                 } else {
1336                         $blockExpiry = $wgLang->timeanddate( wfTimestamp( TS_MW, $blockExpiry ), true );
1337                 }
1338
1339                 if ( $wgUser->mBlock->mAuto ) {
1340                         $msg = 'autoblockedtext';
1341                 } else {
1342                         $msg = 'blockedtext';
1343                 }
1344
1345                 /* $ip returns who *is* being blocked, $intended contains who was meant to be blocked.
1346                  * This could be a username, an ip range, or a single ip. */
1347                 $intended = $wgUser->mBlock->mAddress;
1348
1349                 $this->addWikiMsg( $msg, $link, $reason, $ip, $name, $blockid, $blockExpiry, $intended, $blockTimestamp );
1350
1351                 # Don't auto-return to special pages
1352                 if( $return ) {
1353                         $return = $this->getTitle()->getNamespace() > -1 ? $this->getTitle() : null;
1354                         $this->returnToMain( null, $return );
1355                 }
1356         }
1357
1358         /**
1359          * Output a standard error page
1360          *
1361          * @param string $title Message key for page title
1362          * @param string $msg Message key for page text
1363          * @param array $params Message parameters
1364          */
1365         public function showErrorPage( $title, $msg, $params = array() ) {
1366                 if ( $this->getTitle() ) {
1367                         $this->mDebugtext .= 'Original title: ' . $this->getTitle()->getPrefixedText() . "\n";
1368                 }
1369                 $this->setPageTitle( wfMsg( $title ) );
1370                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1371                 $this->setRobotPolicy( 'noindex,nofollow' );
1372                 $this->setArticleRelated( false );
1373                 $this->enableClientCache( false );
1374                 $this->mRedirect = '';
1375                 $this->mBodytext = '';
1376
1377                 array_unshift( $params, 'parse' );
1378                 array_unshift( $params, $msg );
1379                 $this->addHTML( call_user_func_array( 'wfMsgExt', $params ) );
1380
1381                 $this->returnToMain();
1382         }
1383
1384         /**
1385          * Output a standard permission error page
1386          *
1387          * @param array $errors Error message keys
1388          */
1389         public function showPermissionsErrorPage( $errors, $action = null )
1390         {
1391                 $this->mDebugtext .= 'Original title: ' .
1392                 $this->getTitle()->getPrefixedText() . "\n";
1393                 $this->setPageTitle( wfMsg( 'permissionserrors' ) );
1394                 $this->setHTMLTitle( wfMsg( 'permissionserrors' ) );
1395                 $this->setRobotPolicy( 'noindex,nofollow' );
1396                 $this->setArticleRelated( false );
1397                 $this->enableClientCache( false );
1398                 $this->mRedirect = '';
1399                 $this->mBodytext = '';
1400                 $this->addWikiText( $this->formatPermissionsErrorMessage( $errors, $action ) );
1401         }
1402
1403         /** @deprecated */
1404         public function errorpage( $title, $msg ) {
1405                 wfDeprecated( __METHOD__ );
1406                 throw new ErrorPageError( $title, $msg );
1407         }
1408
1409         /**
1410          * Display an error page indicating that a given version of MediaWiki is
1411          * required to use it
1412          *
1413          * @param mixed $version The version of MediaWiki needed to use the page
1414          */
1415         public function versionRequired( $version ) {
1416                 $this->setPageTitle( wfMsg( 'versionrequired', $version ) );
1417                 $this->setHTMLTitle( wfMsg( 'versionrequired', $version ) );
1418                 $this->setRobotPolicy( 'noindex,nofollow' );
1419                 $this->setArticleRelated( false );
1420                 $this->mBodytext = '';
1421
1422                 $this->addWikiMsg( 'versionrequiredtext', $version );
1423                 $this->returnToMain();
1424         }
1425
1426         /**
1427          * Display an error page noting that a given permission bit is required.
1428          *
1429          * @param string $permission key required
1430          */
1431         public function permissionRequired( $permission ) {
1432                 global $wgLang;
1433
1434                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1435                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1436                 $this->setRobotPolicy( 'noindex,nofollow' );
1437                 $this->setArticleRelated( false );
1438                 $this->mBodytext = '';
1439
1440                 $groups = array_map( array( 'User', 'makeGroupLinkWiki' ),
1441                         User::getGroupsWithPermission( $permission ) );
1442                 if( $groups ) {
1443                         $this->addWikiMsg( 'badaccess-groups',
1444                                 $wgLang->commaList( $groups ),
1445                                 count( $groups) );
1446                 } else {
1447                         $this->addWikiMsg( 'badaccess-group0' );
1448                 }
1449                 $this->returnToMain();
1450         }
1451
1452         /**
1453          * Use permissionRequired.
1454          * @deprecated
1455          */
1456         public function sysopRequired() {
1457                 throw new MWException( "Call to deprecated OutputPage::sysopRequired() method\n" );
1458         }
1459
1460         /**
1461          * Use permissionRequired.
1462          * @deprecated
1463          */
1464         public function developerRequired() {
1465                 throw new MWException( "Call to deprecated OutputPage::developerRequired() method\n" );
1466         }
1467
1468         /**
1469          * Produce the stock "please login to use the wiki" page
1470          */
1471         public function loginToUse() {
1472                 global $wgUser, $wgContLang;
1473
1474                 if( $wgUser->isLoggedIn() ) {
1475                         $this->permissionRequired( 'read' );
1476                         return;
1477                 }
1478
1479                 $skin = $wgUser->getSkin();
1480
1481                 $this->setPageTitle( wfMsg( 'loginreqtitle' ) );
1482                 $this->setHtmlTitle( wfMsg( 'errorpagetitle' ) );
1483                 $this->setRobotPolicy( 'noindex,nofollow' );
1484                 $this->setArticleFlag( false );
1485
1486                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1487                 $loginLink = $skin->link(
1488                         $loginTitle,
1489                         wfMsgHtml( 'loginreqlink' ),
1490                         array(),
1491                         array( 'returnto' => $this->getTitle()->getPrefixedText() ),
1492                         array( 'known', 'noclasses' )
1493                 );
1494                 $this->addHTML( wfMsgWikiHtml( 'loginreqpagetext', $loginLink ) );
1495                 $this->addHTML( "\n<!--" . $this->getTitle()->getPrefixedUrl() . "-->" );
1496
1497                 # Don't return to the main page if the user can't read it
1498                 # otherwise we'll end up in a pointless loop
1499                 $mainPage = Title::newMainPage();
1500                 if( $mainPage->userCanRead() )
1501                         $this->returnToMain( null, $mainPage );
1502         }
1503
1504         /** @deprecated */
1505         public function databaseError( $fname, $sql, $error, $errno ) {
1506                 throw new MWException( "OutputPage::databaseError is obsolete\n" );
1507         }
1508
1509         /**
1510          * @param array $errors An array of arrays returned by Title::getUserPermissionsErrors
1511          * @return string The wikitext error-messages, formatted into a list.
1512          */
1513         public function formatPermissionsErrorMessage( $errors, $action = null ) {
1514                 if ($action == null) {
1515                         $text = wfMsgNoTrans( 'permissionserrorstext', count($errors)). "\n\n";
1516                 } else {
1517                         global $wgLang;
1518                         $action_desc = wfMsgNoTrans( "action-$action" );
1519                         $text = wfMsgNoTrans( 'permissionserrorstext-withaction', count($errors), $action_desc ) . "\n\n";
1520                 }
1521
1522                 if (count( $errors ) > 1) {
1523                         $text .= '<ul class="permissions-errors">' . "\n";
1524
1525                         foreach( $errors as $error )
1526                         {
1527                                 $text .= '<li>';
1528                                 $text .= call_user_func_array( 'wfMsgNoTrans', $error );
1529                                 $text .= "</li>\n";
1530                         }
1531                         $text .= '</ul>';
1532                 } else {
1533                         $text .= "<div class=\"permissions-errors\">\n" . call_user_func_array( 'wfMsgNoTrans', reset( $errors ) ) . "\n</div>";
1534                 }
1535
1536                 return $text;
1537         }
1538
1539         /**
1540          * Display a page stating that the Wiki is in read-only mode,
1541          * and optionally show the source of the page that the user
1542          * was trying to edit.  Should only be called (for this
1543          * purpose) after wfReadOnly() has returned true.
1544          *
1545          * For historical reasons, this function is _also_ used to
1546          * show the error message when a user tries to edit a page
1547          * they are not allowed to edit.  (Unless it's because they're
1548          * blocked, then we show blockedPage() instead.)  In this
1549          * case, the second parameter should be set to true and a list
1550          * of reasons supplied as the third parameter.
1551          *
1552          * @todo Needs to be split into multiple functions.
1553          *
1554          * @param string $source    Source code to show (or null).
1555          * @param bool   $protected Is this a permissions error?
1556          * @param array  $reasons   List of reasons for this error, as returned by Title::getUserPermissionsErrors().
1557          */
1558         public function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
1559                 global $wgUser;
1560                 $skin = $wgUser->getSkin();
1561
1562                 $this->setRobotPolicy( 'noindex,nofollow' );
1563                 $this->setArticleRelated( false );
1564
1565                 // If no reason is given, just supply a default "I can't let you do
1566                 // that, Dave" message.  Should only occur if called by legacy code.
1567                 if ( $protected && empty($reasons) ) {
1568                         $reasons[] = array( 'badaccess-group0' );
1569                 }
1570
1571                 if ( !empty($reasons) ) {
1572                         // Permissions error
1573                         if( $source ) {
1574                                 $this->setPageTitle( wfMsg( 'viewsource' ) );
1575                                 $this->setSubtitle(
1576                                         wfMsg(
1577                                                 'viewsourcefor',
1578                                                 $skin->link(
1579                                                         $this->getTitle(),
1580                                                         null,
1581                                                         array(),
1582                                                         array(),
1583                                                         array( 'known', 'noclasses' )
1584                                                 )
1585                                         )
1586                                 );
1587                         } else {
1588                                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1589                         }
1590                         $this->addWikiText( $this->formatPermissionsErrorMessage( $reasons, $action ) );
1591                 } else {
1592                         // Wiki is read only
1593                         $this->setPageTitle( wfMsg( 'readonly' ) );
1594                         $reason = wfReadOnlyReason();
1595                         $this->wrapWikiMsg( '<div class="mw-readonly-error">$1</div>', array( 'readonlytext', $reason ) );
1596                 }
1597
1598                 // Show source, if supplied
1599                 if( is_string( $source ) ) {
1600                         $this->addWikiMsg( 'viewsourcetext' );
1601
1602                         $params = array(
1603                                 'id'   => 'wpTextbox1',
1604                                 'name' => 'wpTextbox1',
1605                                 'cols' => $wgUser->getOption( 'cols' ),
1606                                 'rows' => $wgUser->getOption( 'rows' ),
1607                                 'readonly' => 'readonly'
1608                         );
1609                         $this->addHTML( Html::element( 'textarea', $params, $source ) );
1610
1611                         // Show templates used by this article
1612                         $skin = $wgUser->getSkin();
1613                         $article = new Article( $this->getTitle() );
1614                         $this->addHTML( "<div class='templatesUsed'>
1615 {$skin->formatTemplates( $article->getUsedTemplates() )}
1616 </div>
1617 " );
1618                 }
1619
1620                 # If the title doesn't exist, it's fairly pointless to print a return
1621                 # link to it.  After all, you just tried editing it and couldn't, so
1622                 # what's there to do there?
1623                 if( $this->getTitle()->exists() ) {
1624                         $this->returnToMain( null, $this->getTitle() );
1625                 }
1626         }
1627
1628         /** @deprecated */
1629         public function fatalError( $message ) {
1630                 wfDeprecated( __METHOD__ );
1631                 throw new FatalError( $message );
1632         }
1633
1634         /** @deprecated */
1635         public function unexpectedValueError( $name, $val ) {
1636                 wfDeprecated( __METHOD__ );
1637                 throw new FatalError( wfMsg( 'unexpected', $name, $val ) );
1638         }
1639
1640         /** @deprecated */
1641         public function fileCopyError( $old, $new ) {
1642                 wfDeprecated( __METHOD__ );
1643                 throw new FatalError( wfMsg( 'filecopyerror', $old, $new ) );
1644         }
1645
1646         /** @deprecated */
1647         public function fileRenameError( $old, $new ) {
1648                 wfDeprecated( __METHOD__ );
1649                 throw new FatalError( wfMsg( 'filerenameerror', $old, $new ) );
1650         }
1651
1652         /** @deprecated */
1653         public function fileDeleteError( $name ) {
1654                 wfDeprecated( __METHOD__ );
1655                 throw new FatalError( wfMsg( 'filedeleteerror', $name ) );
1656         }
1657
1658         /** @deprecated */
1659         public function fileNotFoundError( $name ) {
1660                 wfDeprecated( __METHOD__ );
1661                 throw new FatalError( wfMsg( 'filenotfound', $name ) );
1662         }
1663
1664         public function showFatalError( $message ) {
1665                 $this->setPageTitle( wfMsg( "internalerror" ) );
1666                 $this->setRobotPolicy( "noindex,nofollow" );
1667                 $this->setArticleRelated( false );
1668                 $this->enableClientCache( false );
1669                 $this->mRedirect = '';
1670                 $this->mBodytext = $message;
1671         }
1672
1673         public function showUnexpectedValueError( $name, $val ) {
1674                 $this->showFatalError( wfMsg( 'unexpected', $name, $val ) );
1675         }
1676
1677         public function showFileCopyError( $old, $new ) {
1678                 $this->showFatalError( wfMsg( 'filecopyerror', $old, $new ) );
1679         }
1680
1681         public function showFileRenameError( $old, $new ) {
1682                 $this->showFatalError( wfMsg( 'filerenameerror', $old, $new ) );
1683         }
1684
1685         public function showFileDeleteError( $name ) {
1686                 $this->showFatalError( wfMsg( 'filedeleteerror', $name ) );
1687         }
1688
1689         public function showFileNotFoundError( $name ) {
1690                 $this->showFatalError( wfMsg( 'filenotfound', $name ) );
1691         }
1692
1693         /**
1694          * Add a "return to" link pointing to a specified title
1695          *
1696          * @param Title $title Title to link
1697          * @param string $query Query string
1698          */
1699         public function addReturnTo( $title, $query = array() ) {
1700                 global $wgUser;
1701                 $this->addLink( array( 'rel' => 'next', 'href' => $title->getFullUrl() ) );
1702                 $link = wfMsgHtml( 'returnto', $wgUser->getSkin()->link(
1703                         $title, null, array(), $query ) );
1704                 $this->addHTML( "<p id=\"mw-returnto\">{$link}</p>\n" );
1705         }
1706
1707         /**
1708          * Add a "return to" link pointing to a specified title,
1709          * or the title indicated in the request, or else the main page
1710          *
1711          * @param null $unused No longer used
1712          * @param Title $returnto Title to return to
1713          */
1714         public function returnToMain( $unused = null, $returnto = null, $returntoquery = null ) {
1715                 global $wgRequest;
1716
1717                 if ( $returnto == null ) {
1718                         $returnto = $wgRequest->getText( 'returnto' );
1719                 }
1720
1721                 if ( $returntoquery == null ) {
1722                         $returntoquery = $wgRequest->getText( 'returntoquery' );
1723                 }
1724
1725                 if ( '' === $returnto ) {
1726                         $returnto = Title::newMainPage();
1727                 }
1728
1729                 if ( is_object( $returnto ) ) {
1730                         $titleObj = $returnto;
1731                 } else {
1732                         $titleObj = Title::newFromText( $returnto );
1733                 }
1734                 if ( !is_object( $titleObj ) ) {
1735                         $titleObj = Title::newMainPage();
1736                 }
1737
1738                 $this->addReturnTo( $titleObj, $returntoquery );
1739         }
1740
1741         /**
1742          * @return string The doctype, opening <html>, and head element.
1743          *
1744          * @param $sk Skin The given Skin
1745          */
1746         public function headElement( Skin $sk, $includeStyle = true ) {
1747                 global $wgDocType, $wgDTD, $wgContLanguageCode, $wgOutputEncoding, $wgMimeType;
1748                 global $wgXhtmlDefaultNamespace, $wgXhtmlNamespaces;
1749                 global $wgContLang, $wgUseTrackbacks, $wgStyleVersion, $wgEnableScriptLoader, $wgHtml5;
1750
1751                 $this->addMeta( "http:Content-Type", "$wgMimeType; charset={$wgOutputEncoding}" );
1752                 if ( $sk->commonPrintStylesheet() ) {
1753                         $this->addStyle( 'common/wikiprintable.css', 'print' );
1754                 }
1755                 $sk->setupUserCss( $this );
1756
1757                 $ret = '';
1758
1759                 if( $wgMimeType == 'text/xml' || $wgMimeType == 'application/xhtml+xml' || $wgMimeType == 'application/xml' ) {
1760                         $ret .= "<?xml version=\"1.0\" encoding=\"$wgOutputEncoding\" ?" . ">\n";
1761                 }
1762
1763                 if ( '' == $this->getHTMLTitle() ) {
1764                         $this->setHTMLTitle(  wfMsg( 'pagetitle', $this->getPageTitle() ));
1765                 }
1766
1767                 $dir = $wgContLang->getDir();
1768
1769                 if ( $wgHtml5 ) {
1770                         $ret .= "<!doctype html>\n";
1771                         $ret .= "<html lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1772                 } else {
1773                         $ret .= "<!DOCTYPE html PUBLIC \"$wgDocType\" \"$wgDTD\">\n";
1774                         $ret .= "<html xmlns=\"{$wgXhtmlDefaultNamespace}\" ";
1775                         foreach($wgXhtmlNamespaces as $tag => $ns) {
1776                                 $ret .= "xmlns:{$tag}=\"{$ns}\" ";
1777                         }
1778                         $ret .= "xml:lang=\"$wgContLanguageCode\" lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1779                 }
1780
1781                 $ret .= "<head>\n";
1782                 $ret .= "<title>" . htmlspecialchars( $this->getHTMLTitle() ) . "</title>\n";
1783                 $ret .= implode( "\n", array(
1784                         $this->getHeadLinks(),
1785                         $this->buildCssLinks(),
1786                         $this->getHeadScripts( $sk ),
1787                         $this->getHeadItems(),
1788                 ));
1789                 if( $sk->usercss ){
1790                         $ret .= Html::inlineStyle( $sk->usercss );
1791                 }
1792
1793                 if( $wgEnableScriptLoader )
1794                         $ret .= $this->getScriptLoaderJs();
1795
1796                 if ($wgUseTrackbacks && $this->isArticleRelated())
1797                         $ret .= $this->getTitle()->trackbackRDF();
1798
1799                 $ret .= "</head>\n";
1800                 return $ret;
1801         }
1802
1803         /*
1804          * gets the global variables and mScripts
1805          *
1806          * also adds userjs to the end if enabled:
1807         */
1808         function getHeadScripts( Skin $sk ) {
1809                 global $wgUser, $wgRequest, $wgJsMimeType, $wgUseSiteJs;
1810
1811                 $vars = Skin::makeGlobalVariablesScript( $sk->getSkinName() );
1812
1813                 //add site JS if enabled:
1814                 if( $wgUseSiteJs ) {
1815                         $jsCache = $wgUser->isLoggedIn() ? '&smaxage=0' : '';
1816                         $this->addScriptFile(  Skin::makeUrl( '-',
1817                                         "action=raw$jsCache&gen=js&useskin=" .
1818                                         urlencode( $sk->getSkinName() )
1819                                         )
1820                                 );
1821                 }
1822
1823                 //add user js if enabled:
1824                 if( $this->isUserJsAllowed() && $wgUser->isLoggedIn() ) {
1825                         $action = $wgRequest->getVal( 'action', 'view' );
1826                         if( $this->mTitle && $this->mTitle->isJsSubpage() and $sk->userCanPreview( $action ) ) {
1827                                 # XXX: additional security check/prompt?
1828                                 $this->addInlineScript( $wgRequest->getText( 'wpTextbox1' ) );
1829                         } else {
1830                                 $userpage = $wgUser->getUserPage();
1831                                 $userjs = Skin::makeUrl(
1832                                         $userpage->getPrefixedText() . '/' . $sk->getSkinName() . '.js',
1833                                         'action=raw&ctype=' . $wgJsMimeType );
1834                                 $this->addScriptFile( $userjs );
1835                         }
1836                 }
1837
1838                 return $vars . "\n" . $this->mScripts;
1839         }
1840
1841         protected function addDefaultMeta() {
1842                 global $wgVersion, $wgHtml5;
1843
1844                 static $called = false;
1845                 if ( $called ) {
1846                         # Don't run this twice
1847                         return;
1848                 }
1849                 $called = true;
1850
1851                 if ( !$wgHtml5 ) {
1852                         $this->addMeta( 'http:Content-Style-Type', 'text/css' ); //bug 15835
1853                 }
1854                 $this->addMeta( 'generator', "MediaWiki $wgVersion" );
1855
1856                 $p = "{$this->mIndexPolicy},{$this->mFollowPolicy}";
1857                 if( $p !== 'index,follow' ) {
1858                         // http://www.robotstxt.org/wc/meta-user.html
1859                         // Only show if it's different from the default robots policy
1860                         $this->addMeta( 'robots', $p );
1861                 }
1862
1863                 if ( count( $this->mKeywords ) > 0 ) {
1864                         $strip = array(
1865                                 "/<.*?" . ">/" => '',
1866                                 "/_/" => ' '
1867                         );
1868                         $this->addMeta( 'keywords', preg_replace(array_keys($strip), array_values($strip),implode( ",", $this->mKeywords ) ) );
1869                 }
1870         }
1871
1872         /**
1873          * @return string HTML tag links to be put in the header.
1874          */
1875         public function getHeadLinks() {
1876                 global $wgRequest, $wgFeed;
1877
1878                 // Ideally this should happen earlier, somewhere. :P
1879                 $this->addDefaultMeta();
1880
1881                 $tags = array();
1882
1883                 foreach ( $this->mMetatags as $tag ) {
1884                         if ( 0 == strcasecmp( 'http:', substr( $tag[0], 0, 5 ) ) ) {
1885                                 $a = 'http-equiv';
1886                                 $tag[0] = substr( $tag[0], 5 );
1887                         } else {
1888                                 $a = 'name';
1889                         }
1890                         $tags[] = Html::element( 'meta',
1891                                 array(
1892                                         $a => $tag[0],
1893                                         'content' => $tag[1] ) );
1894                 }
1895                 foreach ( $this->mLinktags as $tag ) {
1896                         $tags[] = Html::element( 'link', $tag );
1897                 }
1898
1899                 if( $wgFeed ) {
1900                         foreach( $this->getSyndicationLinks() as $format => $link ) {
1901                                 # Use the page name for the title (accessed through $wgTitle since
1902                                 # there's no other way).  In principle, this could lead to issues
1903                                 # with having the same name for different feeds corresponding to
1904                                 # the same page, but we can't avoid that at this low a level.
1905
1906                                 $tags[] = $this->feedLink(
1907                                         $format,
1908                                         $link,
1909                                         wfMsg( "page-{$format}-feed", $this->getTitle()->getPrefixedText() ) ); # Used messages: 'page-rss-feed' and 'page-atom-feed' (for an easier grep)
1910                         }
1911
1912                         # Recent changes feed should appear on every page (except recentchanges,
1913                         # that would be redundant). Put it after the per-page feed to avoid
1914                         # changing existing behavior. It's still available, probably via a
1915                         # menu in your browser. Some sites might have a different feed they'd
1916                         # like to promote instead of the RC feed (maybe like a "Recent New Articles"
1917                         # or "Breaking news" one). For this, we see if $wgOverrideSiteFeed is defined.
1918                         # If so, use it instead.
1919
1920                         global $wgOverrideSiteFeed, $wgSitename, $wgFeedClasses;
1921                         $rctitle = SpecialPage::getTitleFor( 'Recentchanges' );
1922
1923                         if ( $wgOverrideSiteFeed ) {
1924                                 foreach ( $wgOverrideSiteFeed as $type => $feedUrl ) {
1925                                         $tags[] = $this->feedLink (
1926                                                 $type,
1927                                                 htmlspecialchars( $feedUrl ),
1928                                                 wfMsg( "site-{$type}-feed", $wgSitename ) );
1929                                 }
1930                         }
1931                         else if ( $this->getTitle()->getPrefixedText() != $rctitle->getPrefixedText() ) {
1932                                 foreach( $wgFeedClasses as $format => $class ) {
1933                                         $tags[] = $this->feedLink(
1934                                                 $format,
1935                                                 $rctitle->getLocalURL( "feed={$format}" ),
1936                                                 wfMsg( "site-{$format}-feed", $wgSitename ) ); # For grep: 'site-rss-feed', 'site-atom-feed'.
1937                                 }
1938                         }
1939                 }
1940
1941                 return implode( "\n", $tags );
1942         }
1943
1944         /**
1945          * Return URLs for each supported syndication format for this page.
1946          * @return array associating format keys with URLs
1947          */
1948         public function getSyndicationLinks() {
1949                 return $this->mFeedLinks;
1950         }
1951
1952         /**
1953          * Generate a <link rel/> for an RSS feed.
1954          */
1955         private function feedLink( $type, $url, $text ) {
1956                 return Html::element( 'link', array(
1957                         'rel' => 'alternate',
1958                         'type' => "application/$type+xml",
1959                         'title' => $text,
1960                         'href' => $url ) );
1961         }
1962
1963         /**
1964          * Add a local or specified stylesheet, with the given media options.
1965          * Meant primarily for internal use...
1966          *
1967          * @param $media -- to specify a media type, 'screen', 'printable', 'handheld' or any.
1968          * @param $conditional -- for IE conditional comments, specifying an IE version
1969          * @param $dir -- set to 'rtl' or 'ltr' for direction-specific sheets
1970          */
1971         public function addStyle( $style, $media='', $condition='', $dir='' ) {
1972                 $options = array();
1973                 // Even though we expect the media type to be lowercase, but here we
1974                 // force it to lowercase to be safe.
1975                 if( $media )
1976                         $options['media'] = $media;
1977                 if( $condition )
1978                         $options['condition'] = $condition;
1979                 if( $dir )
1980                         $options['dir'] = $dir;
1981                 $this->styles[$style] = $options;
1982         }
1983
1984         /**
1985          * Adds inline CSS styles
1986          * @param $style_css Mixed: inline CSS
1987          */
1988         public function addInlineStyle( $style_css ){
1989                 $this->mScripts .= Html::inlineStyle( $style_css );
1990         }
1991
1992         /**
1993          * Build a set of <link>s for the stylesheets specified in the $this->styles array.
1994          * These will be applied to various media & IE conditionals.
1995          */
1996         public function buildCssLinks() {
1997                 $links = array();
1998                 foreach( $this->styles as $file => $options ) {
1999                         $link = $this->styleLink( $file, $options );
2000                         if( $link )
2001                                 $links[] = $link;
2002                 }
2003
2004                 return implode( "\n", $links );
2005         }
2006
2007         protected function styleLink( $style, $options ) {
2008                 global $wgRequest;
2009
2010                 if( isset( $options['dir'] ) ) {
2011                         global $wgContLang;
2012                         $siteDir = $wgContLang->getDir();
2013                         if( $siteDir != $options['dir'] )
2014                                 return '';
2015                 }
2016
2017                 if( isset( $options['media'] ) ) {
2018                         $media = $this->transformCssMedia( $options['media'] );
2019                         if( is_null( $media ) ) {
2020                                 return '';
2021                         }
2022                 } else {
2023                         $media = 'all';
2024                 }
2025
2026                 if( substr( $style, 0, 1 ) == '/' ||
2027                         substr( $style, 0, 5 ) == 'http:' ||
2028                         substr( $style, 0, 6 ) == 'https:' ) {
2029                         $url = $style;
2030                 } else {
2031                         global $wgStylePath, $wgStyleVersion;
2032                         $url = $wgStylePath . '/' . $style . '?' . $wgStyleVersion;
2033                 }
2034
2035                 $link = Html::linkedStyle( $url, $media );
2036
2037                 if( isset( $options['condition'] ) ) {
2038                         $condition = htmlspecialchars( $options['condition'] );
2039                         $link = "<!--[if $condition]>$link<![endif]-->";
2040                 }
2041                 return $link;
2042         }
2043
2044         function transformCssMedia( $media ) {
2045                 global $wgRequest, $wgHandheldForIPhone;
2046
2047                 // Switch in on-screen display for media testing
2048                 $switches = array(
2049                         'printable' => 'print',
2050                         'handheld' => 'handheld',
2051                 );
2052                 foreach( $switches as $switch => $targetMedia ) {
2053                         if( $wgRequest->getBool( $switch ) ) {
2054                                 if( $media == $targetMedia ) {
2055                                         $media = '';
2056                                 } elseif( $media == 'screen' ) {
2057                                         return null;
2058                                 }
2059                         }
2060                 }
2061
2062                 // Expand longer media queries as iPhone doesn't grok 'handheld'
2063                 if( $wgHandheldForIPhone ) {
2064                         $mediaAliases = array(
2065                                 'screen' => 'screen and (min-device-width: 481px)',
2066                                 'handheld' => 'handheld, only screen and (max-device-width: 480px)',
2067                         );
2068
2069                         if( isset( $mediaAliases[$media] ) ) {
2070                                 $media = $mediaAliases[$media];
2071                         }
2072                 }
2073
2074                 return $media;
2075         }
2076
2077         /**
2078          * Turn off regular page output and return an error reponse
2079          * for when rate limiting has triggered.
2080          */
2081         public function rateLimited() {
2082
2083                 $this->setPageTitle(wfMsg('actionthrottled'));
2084                 $this->setRobotPolicy( 'noindex,follow' );
2085                 $this->setArticleRelated( false );
2086                 $this->enableClientCache( false );
2087                 $this->mRedirect = '';
2088                 $this->clearHTML();
2089                 $this->setStatusCode(503);
2090                 $this->addWikiMsg( 'actionthrottledtext' );
2091
2092                 $this->returnToMain( null, $this->getTitle() );
2093         }
2094
2095         /**
2096          * Show an "add new section" link?
2097          *
2098          * @return bool
2099          */
2100         public function showNewSectionLink() {
2101                 return $this->mNewSectionLink;
2102         }
2103
2104         /**
2105         * Forcibly hide the new section link?
2106         *
2107         * @return bool
2108         */
2109         public function forceHideNewSectionLink() {
2110                 return $this->mHideNewSectionLink;
2111         }
2112
2113         /**
2114          * Show a warning about slave lag
2115          *
2116          * If the lag is higher than $wgSlaveLagCritical seconds,
2117          * then the warning is a bit more obvious. If the lag is
2118          * lower than $wgSlaveLagWarning, then no warning is shown.
2119          *
2120          * @param int $lag Slave lag
2121          */
2122         public function showLagWarning( $lag ) {
2123                 global $wgSlaveLagWarning, $wgSlaveLagCritical, $wgLang;
2124                 if( $lag >= $wgSlaveLagWarning ) {
2125                         $message = $lag < $wgSlaveLagCritical
2126                                 ? 'lag-warn-normal'
2127                                 : 'lag-warn-high';
2128                         $wrap = Html::rawElement( 'div', array( 'class' => "mw-{$message}" ), "\n$1\n" );
2129                         $this->wrapWikiMsg( "$wrap\n", array( $message, $wgLang->formatNum( $lag ) ) );
2130                 }
2131         }
2132
2133         /**
2134          * Add a wikitext-formatted message to the output.
2135          * This is equivalent to:
2136          *
2137          *    $wgOut->addWikiText( wfMsgNoTrans( ... ) )
2138          */
2139         public function addWikiMsg( /*...*/ ) {
2140                 $args = func_get_args();
2141                 $name = array_shift( $args );
2142                 $this->addWikiMsgArray( $name, $args );
2143         }
2144
2145         /**
2146          * Add a wikitext-formatted message to the output.
2147          * Like addWikiMsg() except the parameters are taken as an array
2148          * instead of a variable argument list.
2149          *
2150          * $options is passed through to wfMsgExt(), see that function for details.
2151          */
2152         public function addWikiMsgArray( $name, $args, $options = array() ) {
2153                 $options[] = 'parse';
2154                 $text = wfMsgExt( $name, $options, $args );
2155                 $this->addHTML( $text );
2156         }
2157
2158         /**
2159          * This function takes a number of message/argument specifications, wraps them in
2160          * some overall structure, and then parses the result and adds it to the output.
2161          *
2162          * In the $wrap, $1 is replaced with the first message, $2 with the second, and so
2163          * on. The subsequent arguments may either be strings, in which case they are the
2164          * message names, or arrays, in which case the first element is the message name,
2165          * and subsequent elements are the parameters to that message.
2166          *
2167          * The special named parameter 'options' in a message specification array is passed
2168          * through to the $options parameter of wfMsgExt().
2169          *
2170          * Don't use this for messages that are not in users interface language.
2171          *
2172          * For example:
2173          *
2174          *    $wgOut->wrapWikiMsg( '<div class="error">$1</div>', 'some-error' );
2175          *
2176          * Is equivalent to:
2177          *
2178          *    $wgOut->addWikiText( '<div class="error">' . wfMsgNoTrans( 'some-error' ) . '</div>' );
2179          */
2180         public function wrapWikiMsg( $wrap /*, ...*/ ) {
2181                 $msgSpecs = func_get_args();
2182                 array_shift( $msgSpecs );
2183                 $msgSpecs = array_values( $msgSpecs );
2184                 $s = $wrap;
2185                 foreach ( $msgSpecs as $n => $spec ) {
2186                         $options = array();
2187                         if ( is_array( $spec ) ) {
2188                                 $args = $spec;
2189                                 $name = array_shift( $args );
2190                                 if ( isset( $args['options'] ) ) {
2191                                         $options = $args['options'];
2192                                         unset( $args['options'] );
2193                                 }
2194                         }  else {
2195                                 $args = array();
2196                                 $name = $spec;
2197                         }
2198                         $s = str_replace( '$' . ( $n + 1 ), wfMsgExt( $name, $options, $args ), $s );
2199                 }
2200                 $this->addHTML( $this->parse( $s, /*linestart*/true, /*uilang*/true ) );
2201         }
2202 }