includes/EditPage.php

   1 <?php
   2 /**
   3  * Contains the EditPage class
   4  */
   5
   6 /**
   7  * The edit page/HTML interface (split from Article)
   8  * The actual database and text munging is still in Article,
   9  * but it should get easier to call those from alternate
  10  * interfaces.
  11  *
  12  * EditPage cares about two distinct titles:
  13  * $wgTitle is the page that forms submit to, links point to,
  14  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  15  * page in the database that is actually being edited. These are
  16  * usually the same, but they are now allowed to be different.
  17  */
  18 class EditPage {
  19         const AS_SUCCESS_UPDATE                 = 200;
  20         const AS_SUCCESS_NEW_ARTICLE            = 201;
  21         const AS_HOOK_ERROR                     = 210;
  22         const AS_FILTERING                      = 211;
  23         const AS_HOOK_ERROR_EXPECTED            = 212;
  24         const AS_BLOCKED_PAGE_FOR_USER          = 215;
  25         const AS_CONTENT_TOO_BIG                = 216;
  26         const AS_USER_CANNOT_EDIT               = 217;
  27         const AS_READ_ONLY_PAGE_ANON            = 218;
  28         const AS_READ_ONLY_PAGE_LOGGED          = 219;
  29         const AS_READ_ONLY_PAGE                 = 220;
  30         const AS_RATE_LIMITED                   = 221;
  31         const AS_ARTICLE_WAS_DELETED            = 222;
  32         const AS_NO_CREATE_PERMISSION           = 223;
  33         const AS_BLANK_ARTICLE                  = 224;
  34         const AS_CONFLICT_DETECTED              = 225;
  35         const AS_SUMMARY_NEEDED                 = 226;
  36         const AS_TEXTBOX_EMPTY                  = 228;
  37         const AS_MAX_ARTICLE_SIZE_EXCEEDED      = 229;
  38         const AS_OK                             = 230;
  39         const AS_END                            = 231;
  40         const AS_SPAM_ERROR                     = 232;
  41         const AS_IMAGE_REDIRECT_ANON            = 233;
  42         const AS_IMAGE_REDIRECT_LOGGED          = 234;
  43
  44         var $mArticle;
  45         var $mTitle;
  46         var $mMetaData = '';
  47         var $isConflict = false;
  48         var $isCssJsSubpage = false;
  49         var $deletedSinceEdit = false;
  50         var $formtype;
  51         var $firsttime;
  52         var $lastDelete;
  53         var $mTokenOk = false;
  54         var $mTokenOkExceptSuffix = false;
  55         var $mTriedSave = false;
  56         var $tooBig = false;
  57         var $kblength = false;
  58         var $missingComment = false;
  59         var $missingSummary = false;
  60         var $allowBlankSummary = false;
  61         var $autoSumm = '';
  62         var $hookError = '';
  63         var $mPreviewTemplates;
  64
  65         # Form values
  66         var $save = false, $preview = false, $diff = false;
  67         var $minoredit = false, $watchthis = false, $recreate = false;
  68         var $textbox1 = '', $textbox2 = '', $summary = '';
  69         var $edittime = '', $section = '', $starttime = '';
  70         var $oldid = 0, $editintro = '', $scrolltop = null;
  71
  72         # Placeholders for text injection by hooks (must be HTML)
  73         # extensions should take care to _append_ to the present value
  74         public $editFormPageTop; // Before even the preview
  75         public $editFormTextTop;
  76         public $editFormTextBeforeContent;
  77         public $editFormTextAfterWarn;
  78         public $editFormTextAfterTools;
  79         public $editFormTextBottom;
  80
  81         /* $didSave should be set to true whenever an article was succesfully altered. */
  82         public $didSave = false;
  83
  84         public $suppressIntro = false;
  85
  86         /**
  87          * @todo document
  88          * @param $article
  89          */
  90         function EditPage( $article ) {
  91                 $this->mArticle =& $article;
  92                 $this->mTitle = $article->getTitle();
  93
  94                 # Placeholders for text injection by hooks (empty per default)
  95                 $this->editFormPageTop =
  96                 $this->editFormTextTop =
  97                 $this->editFormTextBeforeContent =
  98                 $this->editFormTextAfterWarn =
  99                 $this->editFormTextAfterTools =
 100                 $this->editFormTextBottom = "";
 101         }
 102
 103         /**
 104          * Fetch initial editing page content.
 105          * @private
 106          */
 107         function getContent( $def_text = '' ) {
 108                 global $wgOut, $wgRequest, $wgParser;
 109
 110                 # Get variables from query string :P
 111                 $section = $wgRequest->getVal( 'section' );
 112                 $preload = $wgRequest->getVal( 'preload' );
 113                 $undoafter = $wgRequest->getVal( 'undoafter' );
 114                 $undo = $wgRequest->getVal( 'undo' );
 115
 116                 wfProfileIn( __METHOD__ );
 117
 118                 $text = '';
 119                 if( !$this->mTitle->exists() ) {
 120                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 121                                 # If this is a system message, get the default text.
 122                                 $text = wfMsgWeirdKey ( $this->mTitle->getText() ) ;
 123                         } else {
 124                                 # If requested, preload some text.
 125                                 $text = $this->getPreloadedText( $preload );
 126                         }
 127                         # We used to put MediaWiki:Newarticletext here if
 128                         # $text was empty at this point.
 129                         # This is now shown above the edit box instead.
 130                 } else {
 131                         // FIXME: may be better to use Revision class directly
 132                         // But don't mess with it just yet. Article knows how to
 133                         // fetch the page record from the high-priority server,
 134                         // which is needed to guarantee we don't pick up lagged
 135                         // information.
 136
 137                         $text = $this->mArticle->getContent();
 138
 139                         if ($undo > 0 && $undoafter > 0 && $undo < $undoafter) {
 140                                 # If they got undoafter and undo round the wrong way, switch them
 141                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 142                         }
 143
 144                         if ( $undo > 0 && $undo > $undoafter ) {
 145                                 # Undoing a specific edit overrides section editing; section-editing
 146                                 # doesn't work with undoing.
 147                                 if ( $undoafter ) {
 148                                         $undorev = Revision::newFromId($undo);
 149                                         $oldrev = Revision::newFromId($undoafter);
 150                                 } else {
 151                                         $undorev = Revision::newFromId($undo);
 152                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 153                                 }
 154
 155                                 #Sanity check, make sure it's the right page.
 156                                 # Otherwise, $text will be left as-is.
 157                                 if ( !is_null($undorev) && !is_null($oldrev) && $undorev->getPage()==$oldrev->getPage() && $undorev->getPage()==$this->mArticle->getID() ) {
 158                                         $undorev_text = $undorev->getText();
 159                                         $oldrev_text = $oldrev->getText();
 160                                         $currev_text = $text;
 161
 162                                         #No use doing a merge if it's just a straight revert.
 163                                         if ( $currev_text != $undorev_text ) {
 164                                                 $result = wfMerge($undorev_text, $oldrev_text, $currev_text, $text);
 165                                         } else {
 166                                                 $text = $oldrev_text;
 167                                                 $result = true;
 168                                         }
 169                                 } else {
 170                                         // Failed basic sanity checks.
 171                                         // Older revisions may have been removed since the link
 172                                         // was created, or we may simply have got bogus input.
 173                                         $result = false;
 174                                 }
 175
 176                                 if( $result ) {
 177                                         # Inform the user of our success and set an automatic edit summary
 178                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
 179                                         $firstrev = $oldrev->getNext();
 180                                         # If we just undid one rev, use an autosummary
 181                                         if ( $firstrev->mId == $undo ) {
 182                                                 $this->summary = wfMsgForContent('undo-summary', $undo, $undorev->getUserText());
 183                                         }
 184                                         $this->formtype = 'diff';
 185                                 } else {
 186                                         # Warn the user that something went wrong
 187                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-failure' ) );
 188                                 }
 189                         } else if( $section != '' ) {
 190                                 if( $section == 'new' ) {
 191                                         $text = $this->getPreloadedText( $preload );
 192                                 } else {
 193                                         $text = $wgParser->getSection( $text, $section, $def_text );
 194                                 }
 195                         }
 196                 }
 197
 198                 wfProfileOut( __METHOD__ );
 199                 return $text;
 200         }
 201
 202         /**
 203          * Get the contents of a page from its title and remove includeonly tags
 204          *
 205          * @param $preload String: the title of the page.
 206          * @return string The contents of the page.
 207          */
 208         private function getPreloadedText($preload) {
 209                 if ( $preload === '' )
 210                         return '';
 211                 else {
 212                         $preloadTitle = Title::newFromText( $preload );
 213                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 214                                 $rev=Revision::newFromTitle($preloadTitle);
 215                                 if ( is_object( $rev ) ) {
 216                                         $text = $rev->getText();
 217                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 218                                         // its own mini-parser! -ævar
 219                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 220                                         return $text;
 221                                 } else
 222                                         return '';
 223                         }
 224                 }
 225         }
 226
 227         /**
 228          * This is the function that extracts metadata from the article body on the first view.
 229          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 230          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 231          */
 232         function extractMetaDataFromArticle () {
 233                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
 234                 $this->mMetaData = '' ;
 235                 if ( !$wgUseMetadataEdit ) return ;
 236                 if ( $wgMetadataWhitelist == '' ) return ;
 237                 $s = '' ;
 238                 $t = $this->getContent();
 239
 240                 # MISSING : <nowiki> filtering
 241
 242                 # Categories and language links
 243                 $t = explode ( "\n" , $t ) ;
 244                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
 245                 $cat = $ll = array() ;
 246                 foreach ( $t AS $key => $x )
 247                 {
 248                         $y = trim ( strtolower ( $x ) ) ;
 249                         while ( substr ( $y , 0 , 2 ) == '[[' )
 250                         {
 251                                 $y = explode ( ']]' , trim ( $x ) ) ;
 252                                 $first = array_shift ( $y ) ;
 253                                 $first = explode ( ':' , $first ) ;
 254                                 $ns = array_shift ( $first ) ;
 255                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
 256                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
 257                                 {
 258                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
 259                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
 260                                         else $ll[] = $add ;
 261                                         $x = implode ( ']]' , $y ) ;
 262                                         $t[$key] = $x ;
 263                                         $y = trim ( strtolower ( $x ) ) ;
 264                                 }
 265                         }
 266                 }
 267                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
 268                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
 269                 $t = implode ( "\n" , $t ) ;
 270
 271                 # Load whitelist
 272                 $sat = array () ; # stand-alone-templates; must be lowercase
 273                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
 274                 $wl_article = new Article ( $wl_title ) ;
 275                 $wl = explode ( "\n" , $wl_article->getContent() ) ;
 276                 foreach ( $wl AS $x )
 277                 {
 278                         $isentry = false ;
 279                         $x = trim ( $x ) ;
 280                         while ( substr ( $x , 0 , 1 ) == '*' )
 281                         {
 282                                 $isentry = true ;
 283                                 $x = trim ( substr ( $x , 1 ) ) ;
 284                         }
 285                         if ( $isentry )
 286                         {
 287                                 $sat[] = strtolower ( $x ) ;
 288                         }
 289
 290                 }
 291
 292                 # Templates, but only some
 293                 $t = explode ( '{{' , $t ) ;
 294                 $tl = array () ;
 295                 foreach ( $t AS $key => $x )
 296                 {
 297                         $y = explode ( '}}' , $x , 2 ) ;
 298                         if ( count ( $y ) == 2 )
 299                         {
 300                                 $z = $y[0] ;
 301                                 $z = explode ( '|' , $z ) ;
 302                                 $tn = array_shift ( $z ) ;
 303                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 304                                 {
 305                                         $tl[] = '{{' . $y[0] . '}}' ;
 306                                         $t[$key] = $y[1] ;
 307                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 308                                 }
 309                                 else $t[$key] = '{{' . $x ;
 310                         }
 311                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 312                         else $t[$key] = $x ;
 313                 }
 314                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 315                 $t = implode ( '' , $t ) ;
 316
 317                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 318                 $this->mArticle->mContent = $t ;
 319                 $this->mMetaData = $s ;
 320         }
 321
 322         function submit() {
 323                 $this->edit();
 324         }
 325
 326         /**
 327          * This is the function that gets called for "action=edit". It
 328          * sets up various member variables, then passes execution to
 329          * another function, usually showEditForm()
 330          *
 331          * The edit form is self-submitting, so that when things like
 332          * preview and edit conflicts occur, we get the same form back
 333          * with the extra stuff added.  Only when the final submission
 334          * is made and all is well do we actually save and redirect to
 335          * the newly-edited page.
 336          */
 337         function edit() {
 338                 global $wgOut, $wgUser, $wgRequest;
 339
 340                 if ( !wfRunHooks( 'AlternateEdit', array( &$this ) ) )
 341                         return;
 342
 343                 wfProfileIn( __METHOD__ );
 344                 wfDebug( __METHOD__.": enter\n" );
 345
 346                 // this is not an article
 347                 $wgOut->setArticleFlag(false);
 348
 349                 $this->importFormData( $wgRequest );
 350                 $this->firsttime = false;
 351
 352                 if( $this->live ) {
 353                         $this->livePreview();
 354                         wfProfileOut( __METHOD__ );
 355                         return;
 356                 }
 357
 358                 if( wfReadOnly() ) {
 359                         $this->readOnlyPage( $this->getContent() );
 360                         wfProfileOut( __METHOD__ );
 361                         return;
 362                 }
 363
 364                 $permErrors = $this->mTitle->getUserPermissionsErrors('edit', $wgUser);
 365                 if( !$this->mTitle->exists() ) {
 366                         $permErrors = array_merge( $permErrors,
 367                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors('create', $wgUser), $permErrors ) );
 368                 }
 369
 370                 # Ignore some permissions errors.
 371                 $remove = array();
 372                 foreach( $permErrors as $error ) {
 373                         if ( ( $this->preview || $this->diff ) &&
 374                                 ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext'))
 375                         {
 376                                 // Don't worry about blocks when previewing/diffing
 377                                 $remove[] = $error;
 378                         }
 379
 380                         if ($error[0] == 'readonlytext')
 381                         {
 382                                 if ($this->edit) {
 383                                         $this->formtype = 'preview';
 384                                 } elseif ($this->save || $this->preview || $this->diff) {
 385                                         $remove[] = $error;
 386                                 }
 387                         }
 388                 }
 389                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 390
 391                 if ( $permErrors ) {
 392                         wfDebug( __METHOD__.": User can't edit\n" );
 393                         $this->readOnlyPage( $this->getContent(), true, $permErrors );
 394                         wfProfileOut( __METHOD__ );
 395                         return;
 396                 } else {
 397                         if( $wgRequest->getVal( 'action' ) == 'editredlink' ) {
 398                                 $wgOut->redirect( $this->mTitle->getFullUrl( 'action=edit' ) );
 399                                 return;
 400                         }
 401                         if ( $this->save ) {
 402                                 $this->formtype = 'save';
 403                         } else if ( $this->preview ) {
 404                                 $this->formtype = 'preview';
 405                         } else if ( $this->diff ) {
 406                                 $this->formtype = 'diff';
 407                         } else { # First time through
 408                                 $this->firsttime = true;
 409                                 if( $this->previewOnOpen() ) {
 410                                         $this->formtype = 'preview';
 411                                 } else {
 412                                         $this->extractMetaDataFromArticle () ;
 413                                         $this->formtype = 'initial';
 414                                 }
 415                         }
 416                 }
 417
 418                 wfProfileIn( __METHOD__."-business-end" );
 419
 420                 $this->isConflict = false;
 421                 // css / js subpages of user pages get a special treatment
 422                 $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
 423                 $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 424
 425                 /* Notice that we can't use isDeleted, because it returns true if article is ever deleted
 426                  * no matter it's current state
 427                  */
 428                 $this->deletedSinceEdit = false;
 429                 if ( $this->edittime != '' ) {
 430                         /* Note that we rely on logging table, which hasn't been always there,
 431                          * but that doesn't matter, because this only applies to brand new
 432                          * deletes. This is done on every preview and save request. Move it further down
 433                          * to only perform it on saves
 434                          */
 435                         if ( $this->mTitle->isDeleted() ) {
 436                                 $this->lastDelete = $this->getLastDelete();
 437                                 if ( !is_null($this->lastDelete) ) {
 438                                         $deletetime = $this->lastDelete->log_timestamp;
 439                                         if ( ($deletetime - $this->starttime) > 0 ) {
 440                                                 $this->deletedSinceEdit = true;
 441                                         }
 442                                 }
 443                         }
 444                 }
 445
 446                 # Show applicable editing introductions
 447                 if( $this->formtype == 'initial' || $this->firsttime )
 448                         $this->showIntro();
 449
 450                 if( $this->mTitle->isTalkPage() ) {
 451                         $wgOut->addWikiMsg( 'talkpagetext' );
 452                 }
 453
 454                 # Attempt submission here.  This will check for edit conflicts,
 455                 # and redundantly check for locked database, blocked IPs, etc.
 456                 # that edit() already checked just in case someone tries to sneak
 457                 # in the back door with a hand-edited submission URL.
 458
 459                 if ( 'save' == $this->formtype ) {
 460                         if ( !$this->attemptSave() ) {
 461                                 wfProfileOut( __METHOD__."-business-end" );
 462                                 wfProfileOut( __METHOD__ );
 463                                 return;
 464                         }
 465                 }
 466
 467                 # First time through: get contents, set time for conflict
 468                 # checking, etc.
 469                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 470                         if ($this->initialiseForm() === false) {
 471                                 $this->noSuchSectionPage();
 472                                 wfProfileOut( __METHOD__."-business-end" );
 473                                 wfProfileOut( __METHOD__ );
 474                                 return;
 475                         }
 476                         if( !$this->mTitle->getArticleId() )
 477                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 478                 }
 479
 480                 $this->showEditForm();
 481                 wfProfileOut( __METHOD__."-business-end" );
 482                 wfProfileOut( __METHOD__ );
 483         }
 484
 485         /**
 486          * Show a read-only error
 487          * Parameters are the same as OutputPage:readOnlyPage()
 488          * Redirect to the article page if action=editredlink
 489          */
 490         function readOnlyPage( $source = null, $protected = false, $reasons = array() ) {
 491                 global $wgRequest, $wgOut;
 492                 if ( $wgRequest->getVal( 'action' ) === 'editredlink' ) {
 493                         // The edit page was reached via a red link.
 494                         // Redirect to the article page and let them click the edit tab if
 495                         // they really want a permission error.
 496                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 497                 } else {
 498                         $wgOut->readOnlyPage( $source, $protected, $reasons );
 499                 }
 500         }
 501
 502         /**
 503          * Should we show a preview when the edit form is first shown?
 504          *
 505          * @return bool
 506          */
 507         private function previewOnOpen() {
 508                 global $wgRequest, $wgUser;
 509                 if( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 510                         // Explicit override from request
 511                         return true;
 512                 } elseif( $wgRequest->getVal( 'preview' ) == 'no' ) {
 513                         // Explicit override from request
 514                         return false;
 515                 } elseif( $this->section == 'new' ) {
 516                         // Nothing *to* preview for new sections
 517                         return false;
 518                 } elseif( ( $wgRequest->getVal( 'preload' ) !== '' || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 519                         // Standard preference behaviour
 520                         return true;
 521                 } elseif( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
 522                         // Categories are special
 523                         return true;
 524                 } else {
 525                         return false;
 526                 }
 527         }
 528
 529         /**
 530          * @todo document
 531          * @param $request
 532          */
 533         function importFormData( &$request ) {
 534                 global $wgLang, $wgUser;
 535                 $fname = 'EditPage::importFormData';
 536                 wfProfileIn( $fname );
 537
 538                 if( $request->wasPosted() ) {
 539                         # These fields need to be checked for encoding.
 540                         # Also remove trailing whitespace, but don't remove _initial_
 541                         # whitespace from the text boxes. This may be significant formatting.
 542                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 543                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 544                         $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
 545                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 546                         $this->summary   = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
 547
 548                         $this->edittime = $request->getVal( 'wpEdittime' );
 549                         $this->starttime = $request->getVal( 'wpStarttime' );
 550
 551                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 552
 553                         if( is_null( $this->edittime ) ) {
 554                                 # If the form is incomplete, force to preview.
 555                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 556                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 557                                 $this->preview  = true;
 558                         } else {
 559                                 /* Fallback for live preview */
 560                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 561                                 $this->diff = $request->getCheck( 'wpDiff' );
 562
 563                                 // Remember whether a save was requested, so we can indicate
 564                                 // if we forced preview due to session failure.
 565                                 $this->mTriedSave = !$this->preview;
 566
 567                                 if ( $this->tokenOk( $request ) ) {
 568                                         # Some browsers will not report any submit button
 569                                         # if the user hits enter in the comment box.
 570                                         # The unmarked state will be assumed to be a save,
 571                                         # if the form seems otherwise complete.
 572                                         wfDebug( "$fname: Passed token check.\n" );
 573                                 } else if ( $this->diff ) {
 574                                         # Failed token check, but only requested "Show Changes".
 575                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 576                                 } else {
 577                                         # Page might be a hack attempt posted from
 578                                         # an external site. Preview instead of saving.
 579                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 580                                         $this->preview = true;
 581                                 }
 582                         }
 583                         $this->save    = ! ( $this->preview OR $this->diff );
 584                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 585                                 $this->edittime = null;
 586                         }
 587
 588                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 589                                 $this->starttime = null;
 590                         }
 591
 592                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 593
 594                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 595                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 596
 597                         # Don't force edit summaries when a user is editing their own user or talk page
 598                         if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
 599                                 $this->allowBlankSummary = true;
 600                         } else {
 601                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
 602                         }
 603
 604                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 605                 } else {
 606                         # Not a posted form? Start with nothing.
 607                         wfDebug( "$fname: Not a posted form.\n" );
 608                         $this->textbox1  = '';
 609                         $this->textbox2  = '';
 610                         $this->mMetaData = '';
 611                         $this->summary   = '';
 612                         $this->edittime  = '';
 613                         $this->starttime = wfTimestampNow();
 614                         $this->edit      = false;
 615                         $this->preview   = false;
 616                         $this->save      = false;
 617                         $this->diff      = false;
 618                         $this->minoredit = false;
 619                         $this->watchthis = false;
 620                         $this->recreate  = false;
 621                 }
 622
 623                 $this->oldid = $request->getInt( 'oldid' );
 624
 625                 # Section edit can come from either the form or a link
 626                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 627
 628                 $this->live = $request->getCheck( 'live' );
 629                 $this->editintro = $request->getText( 'editintro' );
 630
 631                 wfProfileOut( $fname );
 632         }
 633
 634         /**
 635          * Make sure the form isn't faking a user's credentials.
 636          *
 637          * @param $request WebRequest
 638          * @return bool
 639          * @private
 640          */
 641         function tokenOk( &$request ) {
 642                 global $wgUser;
 643                 $token = $request->getVal( 'wpEditToken' );
 644                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 645                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 646                 return $this->mTokenOk;
 647         }
 648
 649         /**
 650          * Show all applicable editing introductions
 651          */
 652         private function showIntro() {
 653                 global $wgOut, $wgUser;
 654                 if( $this->suppressIntro )
 655                         return;
 656
 657                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exists
 658                 if( $this->mTitle->getNamespace() == NS_USER || $this->mTitle->getNamespace() == NS_USER_TALK ) {
 659                         $parts = explode( '/', $this->mTitle->getText(), 2 );
 660                         $username = $parts[0];
 661                         $id = User::idFromName( $username );
 662                         $ip = User::isIP( $username );
 663
 664                         if ( $id == 0 && !$ip ) {
 665                                 $wgOut->wrapWikiMsg( '<div class="mw-userpage-userdoesnotexist error">$1</div>',
 666                                         array( 'userpage-userdoesnotexist', $username ) );
 667                         }
 668                 }
 669
 670                 if( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 671                         if( $wgUser->isLoggedIn() ) {
 672                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletext">$1</div>', 'newarticletext' );
 673                         } else {
 674                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletextanon">$1</div>', 'newarticletextanon' );
 675                         }
 676                         $this->showDeletionLog( $wgOut );
 677                 }
 678         }
 679
 680         /**
 681          * Attempt to show a custom editing introduction, if supplied
 682          *
 683          * @return bool
 684          */
 685         private function showCustomIntro() {
 686                 if( $this->editintro ) {
 687                         $title = Title::newFromText( $this->editintro );
 688                         if( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 689                                 global $wgOut;
 690                                 $revision = Revision::newFromTitle( $title );
 691                                 $wgOut->addSecondaryWikiText( $revision->getText() );
 692                                 return true;
 693                         } else {
 694                                 return false;
 695                         }
 696                 } else {
 697                         return false;
 698                 }
 699         }
 700
 701         /**
 702          * Attempt submission (no UI)
 703          * @return one of the constants describing the result
 704          */
 705         function internalAttemptSave( &$result, $bot = false ) {
 706                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut, $wgParser;
 707                 global $wgMaxArticleSize;
 708
 709                 $fname = 'EditPage::attemptSave';
 710                 wfProfileIn( $fname );
 711                 wfProfileIn( "$fname-checks" );
 712
 713                 if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 714                 {
 715                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
 716                         return self::AS_HOOK_ERROR;
 717                 }
 718
 719                 # Check image redirect
 720                 if ( $this->mTitle->getNamespace() == NS_IMAGE &&
 721                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 722                         !$wgUser->isAllowed( 'upload' ) ) {
 723                                 if( $wgUser->isAnon() ) {
 724                                         return self::AS_IMAGE_REDIRECT_ANON;
 725                                 } else {
 726                                         return self::AS_IMAGE_REDIRECT_LOGGED;
 727                                 }
 728                 }
 729
 730                 # Reintegrate metadata
 731                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 732                 $this->mMetaData = '' ;
 733
 734                 # Check for spam
 735                 $matches = array();
 736                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 737                         $result['spam'] = $matches[0];
 738                         wfProfileOut( "$fname-checks" );
 739                         wfProfileOut( $fname );
 740                         return self::AS_SPAM_ERROR;
 741                 }
 742                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 743                         # Error messages or other handling should be performed by the filter function
 744                         wfProfileOut( "$fname-checks" );
 745                         wfProfileOut( $fname );
 746                         return self::AS_FILTERING;
 747                 }
 748                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError ) ) ) {
 749                         # Error messages etc. could be handled within the hook...
 750                         wfProfileOut( "$fname-checks" );
 751                         wfProfileOut( $fname );
 752                         return self::AS_HOOK_ERROR;
 753                 } elseif( $this->hookError != '' ) {
 754                         # ...or the hook could be expecting us to produce an error
 755                         wfProfileOut( "$fname-checks" );
 756                         wfProfileOut( $fname );
 757                         return self::AS_HOOK_ERROR_EXPECTED;
 758                 }
 759                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 760                         # Check block state against master, thus 'false'.
 761                         wfProfileOut( "$fname-checks" );
 762                         wfProfileOut( $fname );
 763                         return self::AS_BLOCKED_PAGE_FOR_USER;
 764                 }
 765                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 766                 if ( $this->kblength > $wgMaxArticleSize ) {
 767                         // Error will be displayed by showEditForm()
 768                         $this->tooBig = true;
 769                         wfProfileOut( "$fname-checks" );
 770                         wfProfileOut( $fname );
 771                         return self::AS_CONTENT_TOO_BIG;
 772                 }
 773
 774                 if ( !$wgUser->isAllowed('edit') ) {
 775                         if ( $wgUser->isAnon() ) {
 776                                 wfProfileOut( "$fname-checks" );
 777                                 wfProfileOut( $fname );
 778                                 return self::AS_READ_ONLY_PAGE_ANON;
 779                         }
 780                         else {
 781                                 wfProfileOut( "$fname-checks" );
 782                                 wfProfileOut( $fname );
 783                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 784                         }
 785                 }
 786
 787                 if ( wfReadOnly() ) {
 788                         wfProfileOut( "$fname-checks" );
 789                         wfProfileOut( $fname );
 790                         return self::AS_READ_ONLY_PAGE;
 791                 }
 792                 if ( $wgUser->pingLimiter() ) {
 793                         wfProfileOut( "$fname-checks" );
 794                         wfProfileOut( $fname );
 795                         return self::AS_RATE_LIMITED;
 796                 }
 797
 798                 # If the article has been deleted while editing, don't save it without
 799                 # confirmation
 800                 if ( $this->deletedSinceEdit && !$this->recreate ) {
 801                         wfProfileOut( "$fname-checks" );
 802                         wfProfileOut( $fname );
 803                         return self::AS_ARTICLE_WAS_DELETED;
 804                 }
 805
 806                 wfProfileOut( "$fname-checks" );
 807
 808                 # If article is new, insert it.
 809                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 810                 if ( 0 == $aid ) {
 811
 812                         // Late check for create permission, just in case *PARANOIA*
 813                         if ( !$this->mTitle->userCan( 'create' ) ) {
 814                                 wfDebug( "$fname: no create permission\n" );
 815                                 wfProfileOut( $fname );
 816                                 return self::AS_NO_CREATE_PERMISSION;
 817                         }
 818
 819                         # Don't save a new article if it's blank.
 820                         if ( '' == $this->textbox1 ) {
 821                                         wfProfileOut( $fname );
 822                                         return self::AS_BLANK_ARTICLE;
 823                         }
 824
 825                         // Run post-section-merge edit filter
 826                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError ) ) ) {
 827                                 # Error messages etc. could be handled within the hook...
 828                                 wfProfileOut( $fname );
 829                                 return self::AS_HOOK_ERROR;
 830                         }
 831
 832                         $isComment = ( $this->section == 'new' );
 833
 834                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 835                                 $this->minoredit, $this->watchthis, false, $isComment, $bot);
 836
 837                         wfProfileOut( $fname );
 838                         return self::AS_SUCCESS_NEW_ARTICLE;
 839                 }
 840
 841                 # Article exists. Check for edit conflict.
 842
 843                 $this->mArticle->clear(); # Force reload of dates, etc.
 844                 $this->mArticle->forUpdate( true ); # Lock the article
 845
 846                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 847
 848                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 849                         $this->isConflict = true;
 850                         if( $this->section == 'new' ) {
 851                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 852                                         $this->mArticle->getComment() == $this->summary ) {
 853                                         // Probably a duplicate submission of a new comment.
 854                                         // This can happen when squid resends a request after
 855                                         // a timeout but the first one actually went through.
 856                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 857                                 } else {
 858                                         // New comment; suppress conflict.
 859                                         $this->isConflict = false;
 860                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 861                                 }
 862                         }
 863                 }
 864                 $userid = $wgUser->getID();
 865
 866                 if ( $this->isConflict) {
 867                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 868                                 $this->mArticle->getTimestamp() . "')\n" );
 869                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 870                 }
 871                 else {
 872                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 873                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 874                 }
 875                 if( is_null( $text ) ) {
 876                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 877                         $this->isConflict = true;
 878                         $text = $this->textbox1;
 879                 }
 880
 881                 # Suppress edit conflict with self, except for section edits where merging is required.
 882                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 883                         wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
 884                         $this->isConflict = false;
 885                 } else {
 886                         # switch from section editing to normal editing in edit conflict
 887                         if($this->isConflict) {
 888                                 # Attempt merge
 889                                 if( $this->mergeChangesInto( $text ) ){
 890                                         // Successful merge! Maybe we should tell the user the good news?
 891                                         $this->isConflict = false;
 892                                         wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
 893                                 } else {
 894                                         $this->section = '';
 895                                         $this->textbox1 = $text;
 896                                         wfDebug( "EditPage::editForm Keeping edit conflict, failed merge.\n" );
 897                                 }
 898                         }
 899                 }
 900
 901                 if ( $this->isConflict ) {
 902                         wfProfileOut( $fname );
 903                         return self::AS_CONFLICT_DETECTED;
 904                 }
 905
 906                 $oldtext = $this->mArticle->getContent();
 907
 908                 // Run post-section-merge edit filter
 909                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError ) ) ) {
 910                         # Error messages etc. could be handled within the hook...
 911                         wfProfileOut( $fname );
 912                         return self::AS_HOOK_ERROR;
 913                 }
 914
 915                 # Handle the user preference to force summaries here, but not for null edits
 916                 if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
 917                         &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
 918                         if( md5( $this->summary ) == $this->autoSumm ) {
 919                                 $this->missingSummary = true;
 920                                 wfProfileOut( $fname );
 921                                 return self::AS_SUMMARY_NEEDED;
 922                         }
 923                 }
 924
 925                 #And a similar thing for new sections
 926                 if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 927                         if (trim($this->summary) == '') {
 928                                 $this->missingSummary = true;
 929                                 wfProfileOut( $fname );
 930                                 return self::AS_SUMMARY_NEEDED;
 931                         }
 932                 }
 933
 934                 # All's well
 935                 wfProfileIn( "$fname-sectionanchor" );
 936                 $sectionanchor = '';
 937                 if( $this->section == 'new' ) {
 938                         if ( $this->textbox1 == '' ) {
 939                                 $this->missingComment = true;
 940                                 return self::AS_TEXTBOX_EMPTY;
 941                         }
 942                         if( $this->summary != '' ) {
 943                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
 944                                 # This is a new section, so create a link to the new section
 945                                 # in the revision summary.
 946                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
 947                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
 948                         }
 949                 } elseif( $this->section != '' ) {
 950                         # Try to get a section anchor from the section source, redirect to edited section if header found
 951                         # XXX: might be better to integrate this into Article::replaceSection
 952                         # for duplicate heading checking and maybe parsing
 953                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 954                         # we can't deal with anchors, includes, html etc in the header for now,
 955                         # headline would need to be parsed to improve this
 956                         if($hasmatch and strlen($matches[2]) > 0) {
 957                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
 958                         }
 959                 }
 960                 wfProfileOut( "$fname-sectionanchor" );
 961
 962                 // Save errors may fall down to the edit form, but we've now
 963                 // merged the section into full text. Clear the section field
 964                 // so that later submission of conflict forms won't try to
 965                 // replace that into a duplicated mess.
 966                 $this->textbox1 = $text;
 967                 $this->section = '';
 968
 969                 // Check for length errors again now that the section is merged in
 970                 $this->kblength = (int)(strlen( $text ) / 1024);
 971                 if ( $this->kblength > $wgMaxArticleSize ) {
 972                         $this->tooBig = true;
 973                         wfProfileOut( $fname );
 974                         return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
 975                 }
 976
 977                 # update the article here
 978                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 979                         $this->watchthis, $bot, $sectionanchor ) ) {
 980                         wfProfileOut( $fname );
 981                         return self::AS_SUCCESS_UPDATE;
 982                 } else {
 983                         $this->isConflict = true;
 984                 }
 985                 wfProfileOut( $fname );
 986                 return self::AS_END;
 987         }
 988
 989         /**
 990          * Initialise form fields in the object
 991          * Called on the first invocation, e.g. when a user clicks an edit link
 992          */
 993         function initialiseForm() {
 994                 $this->edittime = $this->mArticle->getTimestamp();
 995                 $this->summary = '';
 996                 $this->textbox1 = $this->getContent(false);
 997                 if ($this->textbox1 === false) return false;
 998
 999                 if ( !$this->mArticle->exists() && $this->mTitle->getNamespace() == NS_MEDIAWIKI )
1000                         $this->textbox1 = wfMsgWeirdKey( $this->mTitle->getText() );
1001                 wfProxyCheck();
1002                 return true;
1003         }
1004
1005         /**
1006          * Send the edit form and related headers to $wgOut
1007          * @param $formCallback Optional callable that takes an OutputPage
1008          *                      parameter; will be called during form output
1009          *                      near the top, for captchas and the like.
1010          */
1011         function showEditForm( $formCallback=null ) {
1012                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle;
1013
1014                 $fname = 'EditPage::showEditForm';
1015                 wfProfileIn( $fname );
1016
1017                 $sk = $wgUser->getSkin();
1018
1019                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
1020
1021                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
1022
1023                 # Enabled article-related sidebar, toplinks, etc.
1024                 $wgOut->setArticleRelated( true );
1025
1026                 if ( $this->formtype == 'preview' ) {
1027                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
1028                 }
1029
1030                 if ( $this->isConflict ) {
1031                         $s = wfMsg( 'editconflict', $wgTitle->getPrefixedText() );
1032                         $wgOut->setPageTitle( $s );
1033                         $wgOut->addWikiMsg( 'explainconflict' );
1034
1035                         $this->textbox2 = $this->textbox1;
1036                         $this->textbox1 = $this->getContent();
1037                         $this->edittime = $this->mArticle->getTimestamp();
1038                 } else {
1039                         if( $this->section != '' ) {
1040                                 if( $this->section == 'new' ) {
1041                                         $s = wfMsg('editingcomment', $wgTitle->getPrefixedText() );
1042                                 } else {
1043                                         $s = wfMsg('editingsection', $wgTitle->getPrefixedText() );
1044                                         $matches = array();
1045                                         if( !$this->summary && !$this->preview && !$this->diff ) {
1046                                                 preg_match( "/^(=+)(.+)\\1/mi",
1047                                                         $this->textbox1,
1048                                                         $matches );
1049                                                 if( !empty( $matches[2] ) ) {
1050                                                         global $wgParser;
1051                                                         $this->summary = "/* " .
1052                                                                 $wgParser->stripSectionName(trim($matches[2])) .
1053                                                                 " */ ";
1054                                                 }
1055                                         }
1056                                 }
1057                         } else {
1058                                 $s = wfMsg( 'editing', $wgTitle->getPrefixedText() );
1059                         }
1060                         $wgOut->setPageTitle( $s );
1061
1062                         if ( $this->missingComment ) {
1063                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommenttext">$1</div>',  'missingcommenttext' );
1064                         }
1065
1066                         if( $this->missingSummary && $this->section != 'new' ) {
1067                                 $wgOut->wrapWikiMsg( '<div id="mw-missingsummary">$1</div>', 'missingsummary' );
1068                         }
1069
1070                         if( $this->missingSummary && $this->section == 'new' ) {
1071                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommentheader">$1</div>', 'missingcommentheader' );
1072                         }
1073
1074                         if( $this->hookError !== '' ) {
1075                                 $wgOut->addWikiText( $this->hookError );
1076                         }
1077
1078                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1079                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1080                         }
1081                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1082                         // Let sysop know that this will make private content public if saved
1083
1084                                 if( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1085                                         $wgOut->addWikiMsg( 'rev-deleted-text-permission' );
1086                                 } else if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1087                                         $wgOut->addWikiMsg( 'rev-deleted-text-view' );
1088                                 }
1089
1090                                 if( !$this->mArticle->mRevision->isCurrent() ) {
1091                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1092                                         $wgOut->addWikiMsg( 'editingold' );
1093                                 }
1094                         }
1095                 }
1096
1097                 if( wfReadOnly() ) {
1098                         $wgOut->addHTML( '<div id="mw-read-only-warning">'.wfMsgWikiHTML( 'readonlywarning' ).'</div>' );
1099                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
1100                         $wgOut->addHTML( '<div id="mw-anon-edit-warning">'.wfMsgWikiHTML( 'anoneditwarning' ).'</div>' );
1101                 } else {
1102                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
1103                                 # Check the skin exists
1104                                 if( $this->isValidCssJsSubpage ) {
1105                                         $wgOut->addWikiMsg( 'usercssjsyoucanpreview' );
1106                                 } else {
1107                                         $wgOut->addWikiMsg( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() );
1108                                 }
1109                         }
1110                 }
1111
1112                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1113                         # Show a warning if editing an interface message
1114                         $wgOut->addWikiMsg( 'editinginterface' );
1115                 } elseif( $this->mTitle->isProtected( 'edit' ) ) {
1116                         # Is the title semi-protected?
1117                         if( $this->mTitle->isSemiProtected() ) {
1118                                 $noticeMsg = 'semiprotectedpagewarning';
1119                         } else {
1120                                 # Then it must be protected based on static groups (regular)
1121                                 $noticeMsg = 'protectedpagewarning';
1122                         }
1123                         $wgOut->addWikiMsg( $noticeMsg );
1124                 }
1125                 if ( $this->mTitle->isCascadeProtected() ) {
1126                         # Is this page under cascading protection from some source pages?
1127                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1128                         $notice = "$1\n";
1129                         if ( count($cascadeSources) > 0 ) {
1130                                 # Explain, and list the titles responsible
1131                                 foreach( $cascadeSources as $page ) {
1132                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1133                                 }
1134                         }
1135                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', count($cascadeSources) ) );
1136                 }
1137                 if( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) != array() ){
1138                         $wgOut->addWikiMsg( 'titleprotectedwarning' );
1139                 }
1140
1141                 if ( $this->kblength === false ) {
1142                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1143                 }
1144                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1145                         $wgOut->addWikiMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize );
1146                 } elseif( $this->kblength > 29 ) {
1147                         $wgOut->addWikiMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) );
1148                 }
1149
1150                 #need to parse the preview early so that we know which templates are used,
1151                 #otherwise users with "show preview after edit box" will get a blank list
1152                 if ( $this->formtype == 'preview' ) {
1153                         $previewOutput = $this->getPreviewText();
1154                 }
1155
1156                 $rows = $wgUser->getIntOption( 'rows' );
1157                 $cols = $wgUser->getIntOption( 'cols' );
1158
1159                 $ew = $wgUser->getOption( 'editwidth' );
1160                 if ( $ew ) $ew = " style=\"width:100%\"";
1161                 else $ew = '';
1162
1163                 $q = 'action=submit';
1164                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
1165                 $action = $wgTitle->escapeLocalURL( $q );
1166
1167                 $summary = wfMsg('summary');
1168                 $subject = wfMsg('subject');
1169
1170                 $cancel = $sk->makeKnownLink( $wgTitle->getPrefixedText(),
1171                                 wfMsgExt('cancel', array('parseinline')) );
1172                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1173                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1174                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1175                         htmlspecialchars( wfMsg( 'newwindow' ) );
1176
1177                 global $wgRightsText;
1178                 if ( $wgRightsText ) {
1179                         $copywarnMsg = array( 'copyrightwarning',
1180                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1181                                 $wgRightsText );
1182                 } else {
1183                         $copywarnMsg = array( 'copyrightwarning2',
1184                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
1185                 }
1186
1187                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1188                         # prepare toolbar for edit buttons
1189                         $toolbar = $this->getEditToolbar();
1190                 } else {
1191                         $toolbar = '';
1192                 }
1193
1194                 // activate checkboxes if user wants them to be always active
1195                 if( !$this->preview && !$this->diff ) {
1196                         # Sort out the "watch" checkbox
1197                         if( $wgUser->getOption( 'watchdefault' ) ) {
1198                                 # Watch all edits
1199                                 $this->watchthis = true;
1200                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1201                                 # Watch creations
1202                                 $this->watchthis = true;
1203                         } elseif( $this->mTitle->userIsWatching() ) {
1204                                 # Already watched
1205                                 $this->watchthis = true;
1206                         }
1207
1208                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1209                 }
1210
1211                 $wgOut->addHTML( $this->editFormPageTop );
1212
1213                 if ( $wgUser->getOption( 'previewontop' ) ) {
1214
1215                         if ( 'preview' == $this->formtype ) {
1216                                 $this->showPreview( $previewOutput );
1217                         } else {
1218                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1219                         }
1220
1221                         if ( 'diff' == $this->formtype ) {
1222                                 $this->showDiff();
1223                         }
1224                 }
1225
1226
1227                 $wgOut->addHTML( $this->editFormTextTop );
1228
1229                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1230                 # Otherwise, show a summary field at the bottom
1231                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
1232                 if( $this->section == 'new' ) {
1233                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1234                         $editsummary = '';
1235                         $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1236                         $summarypreview = '';
1237                 } else {
1238                         $commentsubject = '';
1239                         $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
1240                         $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1241                         $subjectpreview = '';
1242                 }
1243
1244                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1245                 if( !$this->preview && !$this->diff ) {
1246                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1247                 }
1248                 $templates = ($this->preview || $this->section != '') ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
1249                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1250
1251                 global $wgUseMetadataEdit ;
1252                 if ( $wgUseMetadataEdit ) {
1253                         $metadata = $this->mMetaData ;
1254                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1255                         $top = wfMsgWikiHtml( 'metadata_help' );
1256                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1257                 }
1258                 else $metadata = "" ;
1259
1260                 $hidden = '';
1261                 $recreate = '';
1262                 if ($this->deletedSinceEdit) {
1263                         if ( 'save' != $this->formtype ) {
1264                                 $wgOut->addWikiMsg('deletedwhileediting');
1265                         } else {
1266                                 // Hide the toolbar and edit area, use can click preview to get it back
1267                                 // Add an confirmation checkbox and explanation.
1268                                 $toolbar = '';
1269                                 $hidden = 'type="hidden" style="display:none;"';
1270                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
1271                                 $recreate .=
1272                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
1273                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
1274                         }
1275                 }
1276
1277                 $tabindex = 2;
1278
1279                 $checkboxes = self::getCheckboxes( $tabindex, $sk,
1280                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1281
1282                 $checkboxhtml = implode( $checkboxes, "\n" );
1283
1284                 $buttons = $this->getEditButtons( $tabindex );
1285                 $buttonshtml = implode( $buttons, "\n" );
1286
1287                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1288                         ? '' : Xml::hidden( 'safemode', '1' );
1289
1290                 $wgOut->addHTML( <<<END
1291 {$toolbar}
1292 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1293 END
1294 );
1295
1296                 if( is_callable( $formCallback ) ) {
1297                         call_user_func_array( $formCallback, array( &$wgOut ) );
1298                 }
1299
1300                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1301
1302                 // Put these up at the top to ensure they aren't lost on early form submission
1303                 $wgOut->addHTML( "
1304 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1305 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1306 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1307 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1308
1309                 $wgOut->addHTML( <<<END
1310 $recreate
1311 {$commentsubject}
1312 {$subjectpreview}
1313 {$this->editFormTextBeforeContent}
1314 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1315 cols='{$cols}'{$ew} $hidden>
1316 END
1317 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) ) .
1318 "
1319 </textarea>
1320                 " );
1321
1322                 $wgOut->wrapWikiMsg( "<div id=\"editpage-copywarn\">\n$1\n</div>", $copywarnMsg );
1323                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1324                 $wgOut->addHTML( "
1325 {$metadata}
1326 {$editsummary}
1327 {$summarypreview}
1328 {$checkboxhtml}
1329 {$safemodehtml}
1330 ");
1331
1332                 $wgOut->addHTML(
1333 "<div class='editButtons'>
1334 {$buttonshtml}
1335         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1336 </div><!-- editButtons -->
1337 </div><!-- editOptions -->");
1338
1339                 $wgOut->addHtml( '<div class="mw-editTools">' );
1340                 $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
1341                 $wgOut->addHtml( '</div>' );
1342
1343                 $wgOut->addHTML( $this->editFormTextAfterTools );
1344
1345                 $wgOut->addHTML( "
1346 <div class='templatesUsed'>
1347 {$formattedtemplates}
1348 </div>
1349 " );
1350
1351                 /**
1352                  * To make it harder for someone to slip a user a page
1353                  * which submits an edit form to the wiki without their
1354                  * knowledge, a random token is associated with the login
1355                  * session. If it's not passed back with the submission,
1356                  * we won't save the page, or render user JavaScript and
1357                  * CSS previews.
1358                  *
1359                  * For anon editors, who may not have a session, we just
1360                  * include the constant suffix to prevent editing from
1361                  * broken text-mangling proxies.
1362                  */
1363                 $token = htmlspecialchars( $wgUser->editToken() );
1364                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1365
1366
1367                 # If a blank edit summary was previously provided, and the appropriate
1368                 # user preference is active, pass a hidden tag here. This will stop the
1369                 # user being bounced back more than once in the event that a summary
1370                 # is not required.
1371                 if( $this->missingSummary ) {
1372                         $wgOut->addHTML( "<input type=\"hidden\" name=\"wpIgnoreBlankSummary\" value=\"1\" />\n" );
1373                 }
1374
1375                 # For a bit more sophisticated detection of blank summaries, hash the
1376                 # automatic one and pass that in a hidden field.
1377                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1378                 $wgOut->addHtml( wfHidden( 'wpAutoSummary', $autosumm ) );
1379
1380                 if ( $this->isConflict ) {
1381                         $wgOut->wrapWikiMsg( '==$1==', "yourdiff" );
1382
1383                         $de = new DifferenceEngine( $this->mTitle );
1384                         $de->setText( $this->textbox2, $this->textbox1 );
1385                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1386
1387                         $wgOut->wrapWikiMsg( '==$1==', "yourtext" );
1388                         $wgOut->addHTML( "<textarea tabindex='6' id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}'>"
1389                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1390                 }
1391                 $wgOut->addHTML( $this->editFormTextBottom );
1392                 $wgOut->addHTML( "</form>\n" );
1393                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1394
1395                         if ( $this->formtype == 'preview') {
1396                                 $this->showPreview( $previewOutput );
1397                         } else {
1398                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1399                         }
1400
1401                         if ( $this->formtype == 'diff') {
1402                                 $this->showDiff();
1403                         }
1404
1405                 }
1406
1407                 wfProfileOut( $fname );
1408         }
1409
1410         /**
1411          * Append preview output to $wgOut.
1412          * Includes category rendering if this is a category page.
1413          *
1414          * @param string $text The HTML to be output for the preview.
1415          */
1416         private function showPreview( $text ) {
1417                 global $wgOut;
1418
1419                 $wgOut->addHTML( '<div id="wikiPreview">' );
1420                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1421                         $this->mArticle->openShowCategory();
1422                 }
1423                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1424                 $wgOut->addHTML( $text );
1425                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1426                         $this->mArticle->closeShowCategory();
1427                 }
1428                 $wgOut->addHTML( '</div>' );
1429         }
1430
1431         /**
1432          * Live Preview lets us fetch rendered preview page content and
1433          * add it to the page without refreshing the whole page.
1434          * If not supported by the browser it will fall through to the normal form
1435          * submission method.
1436          *
1437          * This function outputs a script tag to support live preview, and
1438          * returns an onclick handler which should be added to the attributes
1439          * of the preview button
1440          */
1441         function doLivePreviewScript() {
1442                 global $wgStylePath, $wgJsMimeType, $wgStyleVersion, $wgOut, $wgTitle;
1443                 $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
1444                         htmlspecialchars( "$wgStylePath/common/preview.js?$wgStyleVersion" ) .
1445                         '"></script>' . "\n" );
1446                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1447                 return "return !lpDoPreview(" .
1448                         "editform.wpTextbox1.value," .
1449                         '"' . $liveAction . '"' . ")";
1450         }
1451
1452         function getLastDelete() {
1453                 $dbr = wfGetDB( DB_SLAVE );
1454                 $fname = 'EditPage::getLastDelete';
1455                 $res = $dbr->select(
1456                         array( 'logging', 'user' ),
1457                         array( 'log_type',
1458                                'log_action',
1459                                'log_timestamp',
1460                                'log_user',
1461                                'log_namespace',
1462                                'log_title',
1463                                'log_comment',
1464                                'log_params',
1465                                'user_name', ),
1466                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1467                                'log_title' => $this->mTitle->getDBkey(),
1468                                'log_type' => 'delete',
1469                                'log_action' => 'delete',
1470                                'user_id=log_user' ),
1471                         $fname,
1472                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1473
1474                 if($dbr->numRows($res) == 1) {
1475                         while ( $x = $dbr->fetchObject ( $res ) )
1476                                 $data = $x;
1477                         $dbr->freeResult ( $res ) ;
1478                 } else {
1479                         $data = null;
1480                 }
1481                 return $data;
1482         }
1483
1484         /**
1485          * @todo document
1486          */
1487         function getPreviewText() {
1488                 global $wgOut, $wgUser, $wgTitle, $wgParser;
1489
1490                 $fname = 'EditPage::getPreviewText';
1491                 wfProfileIn( $fname );
1492
1493                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1494                         if ( $this->mTokenOkExceptSuffix ) {
1495                                 $note = wfMsg( 'token_suffix_mismatch' );
1496                         } else {
1497                                 $note = wfMsg( 'session_fail_preview' );
1498                         }
1499                 } else {
1500                         $note = wfMsg( 'previewnote' );
1501                 }
1502
1503                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1504                 $parserOptions->setEditSection( false );
1505
1506                 global $wgRawHtml;
1507                 if( $wgRawHtml && !$this->mTokenOk ) {
1508                         // Could be an offsite preview attempt. This is very unsafe if
1509                         // HTML is enabled, as it could be an attack.
1510                         return $wgOut->parse( "<div class='previewnote'>" .
1511                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1512                 }
1513
1514                 # don't parse user css/js, show message about preview
1515                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1516
1517                 if ( $this->isCssJsSubpage ) {
1518                         if(preg_match("/\\.css$/", $this->mTitle->getText() ) ) {
1519                                 $previewtext = wfMsg('usercsspreview');
1520                         } else if(preg_match("/\\.js$/", $this->mTitle->getText() ) ) {
1521                                 $previewtext = wfMsg('userjspreview');
1522                         }
1523                         $parserOptions->setTidy(true);
1524                         $parserOutput = $wgParser->parse( $previewtext , $this->mTitle, $parserOptions );
1525                         $wgOut->addHTML( $parserOutput->mText );
1526                         $previewHTML = '';
1527                 } else {
1528                         $toparse = $this->textbox1;
1529
1530                         # If we're adding a comment, we need to show the
1531                         # summary as the headline
1532                         if($this->section=="new" && $this->summary!="") {
1533                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1534                         }
1535
1536                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
1537                         $parserOptions->setTidy(true);
1538                         $parserOptions->enableLimitReport();
1539                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
1540                                         $this->mTitle, $parserOptions );
1541
1542                         $previewHTML = $parserOutput->getText();
1543                         $wgOut->addParserOutputNoText( $parserOutput );
1544
1545                         # ParserOutput might have altered the page title, so reset it
1546                         # Also, use the title defined by DISPLAYTITLE magic word when present
1547                         if( ( $dt = $parserOutput->getDisplayTitle() ) !== false ) {
1548                                 $wgOut->setPageTitle( wfMsg( 'editing', $dt ) );
1549                         } else {
1550                                 $wgOut->setPageTitle( wfMsg( 'editing', $wgTitle->getPrefixedText() ) );
1551                         }
1552
1553                         foreach ( $parserOutput->getTemplates() as $ns => $template)
1554                                 foreach ( array_keys( $template ) as $dbk)
1555                                         $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
1556
1557                         if ( count( $parserOutput->getWarnings() ) ) {
1558                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
1559                         }
1560                 }
1561
1562                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1563                         "<div class='previewnote'>" . $wgOut->parse( $note ) . "</div>\n";
1564                 if ( $this->isConflict ) {
1565                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1566                 }
1567
1568                 wfProfileOut( $fname );
1569                 return $previewhead . $previewHTML;
1570         }
1571
1572         /**
1573          * Call the stock "user is blocked" page
1574          */
1575         function blockedPage() {
1576                 global $wgOut, $wgUser;
1577                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1578
1579                 # If the user made changes, preserve them when showing the markup
1580                 # (This happens when a user is blocked during edit, for instance)
1581                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1582                 if( $first ) {
1583                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1584                 } else {
1585                         $source = $this->textbox1;
1586                 }
1587
1588                 # Spit out the source or the user's modified version
1589                 if( $source !== false ) {
1590                         $rows = $wgUser->getOption( 'rows' );
1591                         $cols = $wgUser->getOption( 'cols' );
1592                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1593                         $wgOut->addHtml( '<hr />' );
1594                         $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
1595                         $wgOut->addHtml( wfOpenElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . wfCloseElement( 'textarea' ) );
1596                 }
1597         }
1598
1599         /**
1600          * Produce the stock "please login to edit pages" page
1601          */
1602         function userNotLoggedInPage() {
1603                 global $wgUser, $wgOut, $wgTitle;
1604                 $skin = $wgUser->getSkin();
1605
1606                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1607                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $wgTitle->getPrefixedUrl() );
1608
1609                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1610                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1611                 $wgOut->setArticleRelated( false );
1612
1613                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1614                 $wgOut->returnToMain( false, $wgTitle );
1615         }
1616
1617         /**
1618          * Creates a basic error page which informs the user that
1619          * they have attempted to edit a nonexistant section.
1620          */
1621         function noSuchSectionPage() {
1622                 global $wgOut, $wgTitle;
1623
1624                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1625                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1626                 $wgOut->setArticleRelated( false );
1627
1628                 $wgOut->addWikiMsg( 'nosuchsectiontext', $this->section );
1629                 $wgOut->returnToMain( false, $wgTitle );
1630         }
1631
1632         /**
1633          * Produce the stock "your edit contains spam" page
1634          *
1635          * @param $match Text which triggered one or more filters
1636          */
1637         function spamPage( $match = false ) {
1638                 global $wgOut, $wgTitle;
1639
1640                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1641                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1642                 $wgOut->setArticleRelated( false );
1643
1644                 $wgOut->addHtml( '<div id="spamprotected">' );
1645                 $wgOut->addWikiMsg( 'spamprotectiontext' );
1646                 if ( $match )
1647                         $wgOut->addWikiMsg( 'spamprotectionmatch',wfEscapeWikiText( $match ) );
1648                 $wgOut->addHtml( '</div>' );
1649
1650                 $wgOut->returnToMain( false, $wgTitle );
1651         }
1652
1653         /**
1654          * @private
1655          * @todo document
1656          */
1657         function mergeChangesInto( &$editText ){
1658                 $fname = 'EditPage::mergeChangesInto';
1659                 wfProfileIn( $fname );
1660
1661                 $db = wfGetDB( DB_MASTER );
1662
1663                 // This is the revision the editor started from
1664                 $baseRevision = Revision::loadFromTimestamp(
1665                         $db, $this->mTitle, $this->edittime );
1666                 if( is_null( $baseRevision ) ) {
1667                         wfProfileOut( $fname );
1668                         return false;
1669                 }
1670                 $baseText = $baseRevision->getText();
1671
1672                 // The current state, we want to merge updates into it
1673                 $currentRevision =  Revision::loadFromTitle(
1674                         $db, $this->mTitle );
1675                 if( is_null( $currentRevision ) ) {
1676                         wfProfileOut( $fname );
1677                         return false;
1678                 }
1679                 $currentText = $currentRevision->getText();
1680
1681                 $result = '';
1682                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1683                         $editText = $result;
1684                         wfProfileOut( $fname );
1685                         return true;
1686                 } else {
1687                         wfProfileOut( $fname );
1688                         return false;
1689                 }
1690         }
1691
1692         /**
1693          * Check if the browser is on a blacklist of user-agents known to
1694          * mangle UTF-8 data on form submission. Returns true if Unicode
1695          * should make it through, false if it's known to be a problem.
1696          * @return bool
1697          * @private
1698          */
1699         function checkUnicodeCompliantBrowser() {
1700                 global $wgBrowserBlackList;
1701                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1702                         // No User-Agent header sent? Trust it by default...
1703                         return true;
1704                 }
1705                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1706                 foreach ( $wgBrowserBlackList as $browser ) {
1707                         if ( preg_match($browser, $currentbrowser) ) {
1708                                 return false;
1709                         }
1710                 }
1711                 return true;
1712         }
1713
1714         /**
1715          * @deprecated use $wgParser->stripSectionName()
1716          */
1717         function pseudoParseSectionAnchor( $text ) {
1718                 global $wgParser;
1719                 return $wgParser->stripSectionName( $text );
1720         }
1721
1722         /**
1723          * Format an anchor fragment as it would appear for a given section name
1724          * @param string $text
1725          * @return string
1726          * @private
1727          */
1728         function sectionAnchor( $text ) {
1729                 global $wgParser;
1730                 return $wgParser->guessSectionNameFromWikiText( $text );
1731         }
1732
1733         /**
1734          * Shows a bulletin board style toolbar for common editing functions.
1735          * It can be disabled in the user preferences.
1736          * The necessary JavaScript code can be found in style/wikibits.js.
1737          */
1738         function getEditToolbar() {
1739                 global $wgStylePath, $wgContLang, $wgJsMimeType;
1740
1741                 /**
1742                  * toolarray an array of arrays which each include the filename of
1743                  * the button image (without path), the opening tag, the closing tag,
1744                  * and optionally a sample text that is inserted between the two when no
1745                  * selection is highlighted.
1746                  * The tip text is shown when the user moves the mouse over the button.
1747                  *
1748                  * Already here are accesskeys (key), which are not used yet until someone
1749                  * can figure out a way to make them work in IE. However, we should make
1750                  * sure these keys are not defined on the edit page.
1751                  */
1752                 $toolarray = array(
1753                         array(  'image' => 'button_bold.png',
1754                                 'id'    => 'mw-editbutton-bold',
1755                                 'open'  => '\\\'\\\'\\\'',
1756                                 'close' => '\\\'\\\'\\\'',
1757                                 'sample'=> wfMsg('bold_sample'),
1758                                 'tip'   => wfMsg('bold_tip'),
1759                                 'key'   => 'B'
1760                         ),
1761                         array(  'image' => 'button_italic.png',
1762                                 'id'    => 'mw-editbutton-italic',
1763                                 'open'  => '\\\'\\\'',
1764                                 'close' => '\\\'\\\'',
1765                                 'sample'=> wfMsg('italic_sample'),
1766                                 'tip'   => wfMsg('italic_tip'),
1767                                 'key'   => 'I'
1768                         ),
1769                         array(  'image' => 'button_link.png',
1770                                 'id'    => 'mw-editbutton-link',
1771                                 'open'  => '[[',
1772                                 'close' => ']]',
1773                                 'sample'=> wfMsg('link_sample'),
1774                                 'tip'   => wfMsg('link_tip'),
1775                                 'key'   => 'L'
1776                         ),
1777                         array(  'image' => 'button_extlink.png',
1778                                 'id'    => 'mw-editbutton-extlink',
1779                                 'open'  => '[',
1780                                 'close' => ']',
1781                                 'sample'=> wfMsg('extlink_sample'),
1782                                 'tip'   => wfMsg('extlink_tip'),
1783                                 'key'   => 'X'
1784                         ),
1785                         array(  'image' => 'button_headline.png',
1786                                 'id'    => 'mw-editbutton-headline',
1787                                 'open'  => "\\n== ",
1788                                 'close' => " ==\\n",
1789                                 'sample'=> wfMsg('headline_sample'),
1790                                 'tip'   => wfMsg('headline_tip'),
1791                                 'key'   => 'H'
1792                         ),
1793                         array(  'image' => 'button_image.png',
1794                                 'id'    => 'mw-editbutton-image',
1795                                 'open'  => '[['.$wgContLang->getNsText(NS_IMAGE).":",
1796                                 'close' => ']]',
1797                                 'sample'=> wfMsg('image_sample'),
1798                                 'tip'   => wfMsg('image_tip'),
1799                                 'key'   => 'D'
1800                         ),
1801                         array(  'image' => 'button_media.png',
1802                                 'id'    => 'mw-editbutton-media',
1803                                 'open'  => '[['.$wgContLang->getNsText(NS_MEDIA).':',
1804                                 'close' => ']]',
1805                                 'sample'=> wfMsg('media_sample'),
1806                                 'tip'   => wfMsg('media_tip'),
1807                                 'key'   => 'M'
1808                         ),
1809                         array(  'image' => 'button_math.png',
1810                                 'id'    => 'mw-editbutton-math',
1811                                 'open'  => "<math>",
1812                                 'close' => "<\\/math>",
1813                                 'sample'=> wfMsg('math_sample'),
1814                                 'tip'   => wfMsg('math_tip'),
1815                                 'key'   => 'C'
1816                         ),
1817                         array(  'image' => 'button_nowiki.png',
1818                                 'id'    => 'mw-editbutton-nowiki',
1819                                 'open'  => "<nowiki>",
1820                                 'close' => "<\\/nowiki>",
1821                                 'sample'=> wfMsg('nowiki_sample'),
1822                                 'tip'   => wfMsg('nowiki_tip'),
1823                                 'key'   => 'N'
1824                         ),
1825                         array(  'image' => 'button_sig.png',
1826                                 'id'    => 'mw-editbutton-signature',
1827                                 'open'  => '--~~~~',
1828                                 'close' => '',
1829                                 'sample'=> '',
1830                                 'tip'   => wfMsg('sig_tip'),
1831                                 'key'   => 'Y'
1832                         ),
1833                         array(  'image' => 'button_hr.png',
1834                                 'id'    => 'mw-editbutton-hr',
1835                                 'open'  => "\\n----\\n",
1836                                 'close' => '',
1837                                 'sample'=> '',
1838                                 'tip'   => wfMsg('hr_tip'),
1839                                 'key'   => 'R'
1840                         )
1841                 );
1842                 $toolbar = "<div id='toolbar'>\n";
1843                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1844
1845                 foreach($toolarray as $tool) {
1846
1847                         $cssId = $tool['id'];
1848                         $image=$wgStylePath.'/common/images/'.$tool['image'];
1849                         $open=$tool['open'];
1850                         $close=$tool['close'];
1851                         $sample = wfEscapeJsString( $tool['sample'] );
1852
1853                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1854                         // Older browsers show a "speedtip" type message only for ALT.
1855                         // Ideally these should be different, realistically they
1856                         // probably don't need to be.
1857                         $tip = wfEscapeJsString( $tool['tip'] );
1858
1859                         #$key = $tool["key"];
1860
1861                         $toolbar.="addButton('$image','$tip','$open','$close','$sample','$cssId');\n";
1862                 }
1863
1864                 $toolbar.="/*]]>*/\n</script>";
1865                 $toolbar.="\n</div>";
1866                 return $toolbar;
1867         }
1868
1869         /**
1870          * Returns an array of html code of the following checkboxes:
1871          * minor and watch
1872          *
1873          * @param $tabindex Current tabindex
1874          * @param $skin Skin object
1875          * @param $checked Array of checkbox => bool, where bool indicates the checked
1876          *                 status of the checkbox
1877          *
1878          * @return array
1879          */
1880         public static function getCheckboxes( &$tabindex, $skin, $checked ) {
1881                 global $wgUser;
1882
1883                 $checkboxes = array();
1884
1885                 $checkboxes['minor'] = '';
1886                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
1887                 if ( $wgUser->isAllowed('minoredit') ) {
1888                         $attribs = array(
1889                                 'tabindex'  => ++$tabindex,
1890                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
1891                                 'id'        => 'wpMinoredit',
1892                         );
1893                         $checkboxes['minor'] =
1894                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
1895                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltipAndAccesskey('minoredit').">{$minorLabel}</label>";
1896                 }
1897
1898                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
1899                 $checkboxes['watch'] = '';
1900                 if ( $wgUser->isLoggedIn() ) {
1901                         $attribs = array(
1902                                 'tabindex'  => ++$tabindex,
1903                                 'accesskey' => wfMsg( 'accesskey-watch' ),
1904                                 'id'        => 'wpWatchthis',
1905                         );
1906                         $checkboxes['watch'] =
1907                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
1908                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltipAndAccesskey('watch').">{$watchLabel}</label>";
1909                 }
1910                 return $checkboxes;
1911         }
1912
1913         /**
1914          * Returns an array of html code of the following buttons:
1915          * save, diff, preview and live
1916          *
1917          * @param $tabindex Current tabindex
1918          *
1919          * @return array
1920          */
1921         public function getEditButtons(&$tabindex) {
1922                 global $wgLivePreview, $wgUser;
1923
1924                 $buttons = array();
1925
1926                 $temp = array(
1927                         'id'        => 'wpSave',
1928                         'name'      => 'wpSave',
1929                         'type'      => 'submit',
1930                         'tabindex'  => ++$tabindex,
1931                         'value'     => wfMsg('savearticle'),
1932                         'accesskey' => wfMsg('accesskey-save'),
1933                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
1934                 );
1935                 $buttons['save'] = wfElement('input', $temp, '');
1936
1937                 ++$tabindex; // use the same for preview and live preview
1938                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
1939                         $temp = array(
1940                                 'id'        => 'wpPreview',
1941                                 'name'      => 'wpPreview',
1942                                 'type'      => 'submit',
1943                                 'tabindex'  => $tabindex,
1944                                 'value'     => wfMsg('showpreview'),
1945                                 'accesskey' => '',
1946                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1947                                 'style'     => 'display: none;',
1948                         );
1949                         $buttons['preview'] = wfElement('input', $temp, '');
1950
1951                         $temp = array(
1952                                 'id'        => 'wpLivePreview',
1953                                 'name'      => 'wpLivePreview',
1954                                 'type'      => 'submit',
1955                                 'tabindex'  => $tabindex,
1956                                 'value'     => wfMsg('showlivepreview'),
1957                                 'accesskey' => wfMsg('accesskey-preview'),
1958                                 'title'     => '',
1959                                 'onclick'   => $this->doLivePreviewScript(),
1960                         );
1961                         $buttons['live'] = wfElement('input', $temp, '');
1962                 } else {
1963                         $temp = array(
1964                                 'id'        => 'wpPreview',
1965                                 'name'      => 'wpPreview',
1966                                 'type'      => 'submit',
1967                                 'tabindex'  => $tabindex,
1968                                 'value'     => wfMsg('showpreview'),
1969                                 'accesskey' => wfMsg('accesskey-preview'),
1970                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1971                         );
1972                         $buttons['preview'] = wfElement('input', $temp, '');
1973                         $buttons['live'] = '';
1974                 }
1975
1976                 $temp = array(
1977                         'id'        => 'wpDiff',
1978                         'name'      => 'wpDiff',
1979                         'type'      => 'submit',
1980                         'tabindex'  => ++$tabindex,
1981                         'value'     => wfMsg('showdiff'),
1982                         'accesskey' => wfMsg('accesskey-diff'),
1983                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
1984                 );
1985                 $buttons['diff'] = wfElement('input', $temp, '');
1986
1987                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons ) );
1988                 return $buttons;
1989         }
1990
1991         /**
1992          * Output preview text only. This can be sucked into the edit page
1993          * via JavaScript, and saves the server time rendering the skin as
1994          * well as theoretically being more robust on the client (doesn't
1995          * disturb the edit box's undo history, won't eat your text on
1996          * failure, etc).
1997          *
1998          * @todo This doesn't include category or interlanguage links.
1999          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2000          *       or something...</s> that might also require more skin
2001          *       initialization, so check whether that's a problem.
2002          */
2003         function livePreview() {
2004                 global $wgOut;
2005                 $wgOut->disable();
2006                 header( 'Content-type: text/xml; charset=utf-8' );
2007                 header( 'Cache-control: no-cache' );
2008
2009                 $previewText = $this->getPreviewText();
2010                 #$categories = $skin->getCategoryLinks();
2011
2012                 $s =
2013                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2014                 Xml::tags( 'livepreview', null,
2015                         Xml::element( 'preview', null, $previewText )
2016                         #.      Xml::element( 'category', null, $categories )
2017                 );
2018                 echo $s;
2019         }
2020
2021
2022         /**
2023          * Get a diff between the current contents of the edit box and the
2024          * version of the page we're editing from.
2025          *
2026          * If this is a section edit, we'll replace the section as for final
2027          * save and then make a comparison.
2028          */
2029         function showDiff() {
2030                 $oldtext = $this->mArticle->fetchContent();
2031                 $newtext = $this->mArticle->replaceSection(
2032                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2033                 $newtext = $this->mArticle->preSaveTransform( $newtext );
2034                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
2035                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
2036                 if ( $oldtext !== false  || $newtext != '' ) {
2037                         $de = new DifferenceEngine( $this->mTitle );
2038                         $de->setText( $oldtext, $newtext );
2039                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2040                         $de->showDiffStyle();
2041                 } else {
2042                         $difftext = '';
2043                 }
2044
2045                 global $wgOut;
2046                 $wgOut->addHtml( '<div id="wikiDiff">' . $difftext . '</div>' );
2047         }
2048
2049         /**
2050          * Filter an input field through a Unicode de-armoring process if it
2051          * came from an old browser with known broken Unicode editing issues.
2052          *
2053          * @param WebRequest $request
2054          * @param string $field
2055          * @return string
2056          * @private
2057          */
2058         function safeUnicodeInput( $request, $field ) {
2059                 $text = rtrim( $request->getText( $field ) );
2060                 return $request->getBool( 'safemode' )
2061                         ? $this->unmakesafe( $text )
2062                         : $text;
2063         }
2064
2065         /**
2066          * Filter an output field through a Unicode armoring process if it is
2067          * going to an old browser with known broken Unicode editing issues.
2068          *
2069          * @param string $text
2070          * @return string
2071          * @private
2072          */
2073         function safeUnicodeOutput( $text ) {
2074                 global $wgContLang;
2075                 $codedText = $wgContLang->recodeForEdit( $text );
2076                 return $this->checkUnicodeCompliantBrowser()
2077                         ? $codedText
2078                         : $this->makesafe( $codedText );
2079         }
2080
2081         /**
2082          * A number of web browsers are known to corrupt non-ASCII characters
2083          * in a UTF-8 text editing environment. To protect against this,
2084          * detected browsers will be served an armored version of the text,
2085          * with non-ASCII chars converted to numeric HTML character references.
2086          *
2087          * Preexisting such character references will have a 0 added to them
2088          * to ensure that round-trips do not alter the original data.
2089          *
2090          * @param string $invalue
2091          * @return string
2092          * @private
2093          */
2094         function makesafe( $invalue ) {
2095                 // Armor existing references for reversability.
2096                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2097
2098                 $bytesleft = 0;
2099                 $result = "";
2100                 $working = 0;
2101                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2102                         $bytevalue = ord( $invalue{$i} );
2103                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
2104                                 $result .= chr( $bytevalue );
2105                                 $bytesleft = 0;
2106                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
2107                                 $working = $working << 6;
2108                                 $working += ($bytevalue & 0x3F);
2109                                 $bytesleft--;
2110                                 if( $bytesleft <= 0 ) {
2111                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2112                                 }
2113                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
2114                                 $working = $bytevalue & 0x1F;
2115                                 $bytesleft = 1;
2116                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
2117                                 $working = $bytevalue & 0x0F;
2118                                 $bytesleft = 2;
2119                         } else { //1111 0xxx
2120                                 $working = $bytevalue & 0x07;
2121                                 $bytesleft = 3;
2122                         }
2123                 }
2124                 return $result;
2125         }
2126
2127         /**
2128          * Reverse the previously applied transliteration of non-ASCII characters
2129          * back to UTF-8. Used to protect data from corruption by broken web browsers
2130          * as listed in $wgBrowserBlackList.
2131          *
2132          * @param string $invalue
2133          * @return string
2134          * @private
2135          */
2136         function unmakesafe( $invalue ) {
2137                 $result = "";
2138                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2139                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2140                                 $i += 3;
2141                                 $hexstring = "";
2142                                 do {
2143                                         $hexstring .= $invalue{$i};
2144                                         $i++;
2145                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2146
2147                                 // Do some sanity checks. These aren't needed for reversability,
2148                                 // but should help keep the breakage down if the editor
2149                                 // breaks one of the entities whilst editing.
2150                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
2151                                         $codepoint = hexdec($hexstring);
2152                                         $result .= codepointToUtf8( $codepoint );
2153                                 } else {
2154                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2155                                 }
2156                         } else {
2157                                 $result .= substr( $invalue, $i, 1 );
2158                         }
2159                 }
2160                 // reverse the transform that we made for reversability reasons.
2161                 return strtr( $result, array( "&#x0" => "&#x" ) );
2162         }
2163
2164         function noCreatePermission() {
2165                 global $wgOut;
2166                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2167                 $wgOut->addWikiMsg( 'nocreatetext' );
2168         }
2169
2170         /**
2171          * If there are rows in the deletion log for this page, show them,
2172          * along with a nice little note for the user
2173          *
2174          * @param OutputPage $out
2175          */
2176         private function showDeletionLog( $out ) {
2177                 $title = $this->mTitle;
2178                 $reader = new LogReader(
2179                         new FauxRequest(
2180                                 array(
2181                                         'page' => $title->getPrefixedText(),
2182                                         'type' => 'delete',
2183                                         )
2184                         )
2185                 );
2186                 if( $reader->hasRows() ) {
2187                         $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
2188                         $out->addWikiMsg( 'recreate-deleted-warn' );
2189                         $viewer = new LogViewer( $reader );
2190                         $viewer->showList( $out );
2191                         $out->addHtml( '</div>' );
2192                 }
2193         }
2194
2195         /**
2196          * Attempt submission
2197          * @return bool false if output is done, true if the rest of the form should be displayed
2198          */
2199         function attemptSave() {
2200                 global $wgUser, $wgOut, $wgTitle, $wgRequest;
2201
2202                 $resultDetails = false;
2203                 $value = $this->internalAttemptSave( $resultDetails, $wgUser->isAllowed('bot') && $wgRequest->getBool('bot', true) );
2204
2205                 if( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
2206                         $this->didSave = true;
2207                 }
2208
2209                 switch ($value) {
2210                         case self::AS_HOOK_ERROR_EXPECTED:
2211                         case self::AS_CONTENT_TOO_BIG:
2212                         case self::AS_ARTICLE_WAS_DELETED:
2213                         case self::AS_CONFLICT_DETECTED:
2214                         case self::AS_SUMMARY_NEEDED:
2215                         case self::AS_TEXTBOX_EMPTY:
2216                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
2217                         case self::AS_END:
2218                                 return true;
2219
2220                         case self::AS_HOOK_ERROR:
2221                         case self::AS_FILTERING:
2222                         case self::AS_SUCCESS_NEW_ARTICLE:
2223                         case self::AS_SUCCESS_UPDATE:
2224                                 return false;
2225
2226                         case self::AS_SPAM_ERROR:
2227                                 $this->spamPage ( $resultDetails['spam'] );
2228                                 return false;
2229
2230                         case self::AS_BLOCKED_PAGE_FOR_USER:
2231                                 $this->blockedPage();
2232                                 return false;
2233
2234                         case self::AS_IMAGE_REDIRECT_ANON:
2235                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
2236                                 return false;
2237
2238                         case self::AS_READ_ONLY_PAGE_ANON:
2239                                 $this->userNotLoggedInPage();
2240                                 return false;
2241
2242                         case self::AS_READ_ONLY_PAGE_LOGGED:
2243                         case self::AS_READ_ONLY_PAGE:
2244                                 $wgOut->readOnlyPage();
2245                                 return false;
2246
2247                         case self::AS_RATE_LIMITED:
2248                                 $wgOut->rateLimited();
2249                                 return false;
2250
2251                         case self::AS_NO_CREATE_PERMISSION;
2252                                 $this->noCreatePermission();
2253                                 return;
2254
2255                         case self::AS_BLANK_ARTICLE:
2256                                 $wgOut->redirect( $wgTitle->getFullURL() );
2257                                 return false;
2258
2259                         case self::AS_IMAGE_REDIRECT_LOGGED:
2260                                 $wgOut->permissionRequired( 'upload' );
2261                                 return false;
2262                 }
2263         }
2264 }