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         protected function wasDeletedSinceLastEdit() {
 323                 /* Note that we rely on the logging table, which hasn't been always there,
 324                  * but that doesn't matter, because this only applies to brand new
 325                  * deletes.
 326                  */
 327                 if ( $this->deletedSinceEdit )
 328                         return true;
 329                 if ( $this->mTitle->isDeleted() ) {
 330                         $this->lastDelete = $this->getLastDelete();
 331                         if ( !is_null($this->lastDelete) ) {
 332                                 $deletetime = $this->lastDelete->log_timestamp;
 333                                 if ( ($deletetime - $this->starttime) > 0 ) {
 334                                         $this->deletedSinceEdit = true;
 335                                 }
 336                         }
 337                 }
 338                 return $this->deletedSinceEdit;
 339         }
 340
 341         function submit() {
 342                 $this->edit();
 343         }
 344
 345         /**
 346          * This is the function that gets called for "action=edit". It
 347          * sets up various member variables, then passes execution to
 348          * another function, usually showEditForm()
 349          *
 350          * The edit form is self-submitting, so that when things like
 351          * preview and edit conflicts occur, we get the same form back
 352          * with the extra stuff added.  Only when the final submission
 353          * is made and all is well do we actually save and redirect to
 354          * the newly-edited page.
 355          */
 356         function edit() {
 357                 global $wgOut, $wgUser, $wgRequest;
 358
 359                 if ( !wfRunHooks( 'AlternateEdit', array( &$this ) ) )
 360                         return;
 361
 362                 wfProfileIn( __METHOD__ );
 363                 wfDebug( __METHOD__.": enter\n" );
 364
 365                 // this is not an article
 366                 $wgOut->setArticleFlag(false);
 367
 368                 $this->importFormData( $wgRequest );
 369                 $this->firsttime = false;
 370
 371                 if( $this->live ) {
 372                         $this->livePreview();
 373                         wfProfileOut( __METHOD__ );
 374                         return;
 375                 }
 376
 377                 if( wfReadOnly() ) {
 378                         $this->readOnlyPage( $this->getContent() );
 379                         wfProfileOut( __METHOD__ );
 380                         return;
 381                 }
 382
 383                 $permErrors = $this->mTitle->getUserPermissionsErrors('edit', $wgUser);
 384                 if( !$this->mTitle->exists() ) {
 385                         $permErrors = array_merge( $permErrors,
 386                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors('create', $wgUser), $permErrors ) );
 387                 }
 388
 389                 # Ignore some permissions errors.
 390                 $remove = array();
 391                 foreach( $permErrors as $error ) {
 392                         if ( ( $this->preview || $this->diff ) &&
 393                                 ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext'))
 394                         {
 395                                 // Don't worry about blocks when previewing/diffing
 396                                 $remove[] = $error;
 397                         }
 398
 399                         if ($error[0] == 'readonlytext')
 400                         {
 401                                 if ($this->edit) {
 402                                         $this->formtype = 'preview';
 403                                 } elseif ($this->save || $this->preview || $this->diff) {
 404                                         $remove[] = $error;
 405                                 }
 406                         }
 407                 }
 408                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 409
 410                 if ( $permErrors ) {
 411                         wfDebug( __METHOD__.": User can't edit\n" );
 412                         $this->readOnlyPage( $this->getContent(), true, $permErrors );
 413                         wfProfileOut( __METHOD__ );
 414                         return;
 415                 } else {
 416                         if ( $this->save ) {
 417                                 $this->formtype = 'save';
 418                         } else if ( $this->preview ) {
 419                                 $this->formtype = 'preview';
 420                         } else if ( $this->diff ) {
 421                                 $this->formtype = 'diff';
 422                         } else { # First time through
 423                                 $this->firsttime = true;
 424                                 if( $this->previewOnOpen() ) {
 425                                         $this->formtype = 'preview';
 426                                 } else {
 427                                         $this->extractMetaDataFromArticle () ;
 428                                         $this->formtype = 'initial';
 429                                 }
 430                         }
 431                 }
 432
 433                 wfProfileIn( __METHOD__."-business-end" );
 434
 435                 $this->isConflict = false;
 436                 // css / js subpages of user pages get a special treatment
 437                 $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
 438                 $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 439
 440                 # Show applicable editing introductions
 441                 if( $this->formtype == 'initial' || $this->firsttime )
 442                         $this->showIntro();
 443
 444                 if( $this->mTitle->isTalkPage() ) {
 445                         $wgOut->addWikiMsg( 'talkpagetext' );
 446                 }
 447
 448                 # Attempt submission here.  This will check for edit conflicts,
 449                 # and redundantly check for locked database, blocked IPs, etc.
 450                 # that edit() already checked just in case someone tries to sneak
 451                 # in the back door with a hand-edited submission URL.
 452
 453                 if ( 'save' == $this->formtype ) {
 454                         if ( !$this->attemptSave() ) {
 455                                 wfProfileOut( __METHOD__."-business-end" );
 456                                 wfProfileOut( __METHOD__ );
 457                                 return;
 458                         }
 459                 }
 460
 461                 # First time through: get contents, set time for conflict
 462                 # checking, etc.
 463                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 464                         if ($this->initialiseForm() === false) {
 465                                 $this->noSuchSectionPage();
 466                                 wfProfileOut( __METHOD__."-business-end" );
 467                                 wfProfileOut( __METHOD__ );
 468                                 return;
 469                         }
 470                         if( !$this->mTitle->getArticleId() )
 471                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 472                 }
 473
 474                 $this->showEditForm();
 475                 wfProfileOut( __METHOD__."-business-end" );
 476                 wfProfileOut( __METHOD__ );
 477         }
 478
 479         /**
 480          * Show a read-only error
 481          * Parameters are the same as OutputPage:readOnlyPage()
 482          * Redirect to the article page if redlink=1
 483          */
 484         function readOnlyPage( $source = null, $protected = false, $reasons = array() ) {
 485                 global $wgRequest, $wgOut;
 486                 if ( $wgRequest->getBool( 'redlink' ) ) {
 487                         // The edit page was reached via a red link.
 488                         // Redirect to the article page and let them click the edit tab if
 489                         // they really want a permission error.
 490                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 491                 } else {
 492                         $wgOut->readOnlyPage( $source, $protected, $reasons );
 493                 }
 494         }
 495
 496         /**
 497          * Should we show a preview when the edit form is first shown?
 498          *
 499          * @return bool
 500          */
 501         private function previewOnOpen() {
 502                 global $wgRequest, $wgUser;
 503                 if( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 504                         // Explicit override from request
 505                         return true;
 506                 } elseif( $wgRequest->getVal( 'preview' ) == 'no' ) {
 507                         // Explicit override from request
 508                         return false;
 509                 } elseif( $this->section == 'new' ) {
 510                         // Nothing *to* preview for new sections
 511                         return false;
 512                 } elseif( ( $wgRequest->getVal( 'preload' ) !== '' || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 513                         // Standard preference behaviour
 514                         return true;
 515                 } elseif( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
 516                         // Categories are special
 517                         return true;
 518                 } else {
 519                         return false;
 520                 }
 521         }
 522
 523         /**
 524          * @todo document
 525          * @param $request
 526          */
 527         function importFormData( &$request ) {
 528                 global $wgLang, $wgUser;
 529                 $fname = 'EditPage::importFormData';
 530                 wfProfileIn( $fname );
 531
 532                 # Section edit can come from either the form or a link
 533                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 534
 535                 if( $request->wasPosted() ) {
 536                         # These fields need to be checked for encoding.
 537                         # Also remove trailing whitespace, but don't remove _initial_
 538                         # whitespace from the text boxes. This may be significant formatting.
 539                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 540                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 541                         $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
 542                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 543                         $this->summary   = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
 544
 545                         $this->edittime = $request->getVal( 'wpEdittime' );
 546                         $this->starttime = $request->getVal( 'wpStarttime' );
 547
 548                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 549
 550                         if( is_null( $this->edittime ) ) {
 551                                 # If the form is incomplete, force to preview.
 552                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 553                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 554                                 $this->preview  = true;
 555                         } else {
 556                                 /* Fallback for live preview */
 557                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 558                                 $this->diff = $request->getCheck( 'wpDiff' );
 559
 560                                 // Remember whether a save was requested, so we can indicate
 561                                 // if we forced preview due to session failure.
 562                                 $this->mTriedSave = !$this->preview;
 563
 564                                 if ( $this->tokenOk( $request ) ) {
 565                                         # Some browsers will not report any submit button
 566                                         # if the user hits enter in the comment box.
 567                                         # The unmarked state will be assumed to be a save,
 568                                         # if the form seems otherwise complete.
 569                                         wfDebug( "$fname: Passed token check.\n" );
 570                                 } else if ( $this->diff ) {
 571                                         # Failed token check, but only requested "Show Changes".
 572                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 573                                 } else {
 574                                         # Page might be a hack attempt posted from
 575                                         # an external site. Preview instead of saving.
 576                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 577                                         $this->preview = true;
 578                                 }
 579                         }
 580                         $this->save    = ! ( $this->preview OR $this->diff );
 581                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 582                                 $this->edittime = null;
 583                         }
 584
 585                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 586                                 $this->starttime = null;
 587                         }
 588
 589                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 590
 591                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 592                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 593
 594                         # Don't force edit summaries when a user is editing their own user or talk page
 595                         if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
 596                                 $this->allowBlankSummary = true;
 597                         } else {
 598                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
 599                         }
 600
 601                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 602                 } else {
 603                         # Not a posted form? Start with nothing.
 604                         wfDebug( "$fname: Not a posted form.\n" );
 605                         $this->textbox1  = '';
 606                         $this->textbox2  = '';
 607                         $this->mMetaData = '';
 608                         $this->summary   = '';
 609                         $this->edittime  = '';
 610                         $this->starttime = wfTimestampNow();
 611                         $this->edit      = false;
 612                         $this->preview   = false;
 613                         $this->save      = false;
 614                         $this->diff      = false;
 615                         $this->minoredit = false;
 616                         $this->watchthis = false;
 617                         $this->recreate  = false;
 618
 619                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 620                                 $this->summary = $request->getVal( 'preloadtitle' );
 621                         }
 622                 }
 623
 624                 $this->oldid = $request->getInt( 'oldid' );
 625
 626                 $this->live = $request->getCheck( 'live' );
 627                 $this->editintro = $request->getText( 'editintro' );
 628
 629                 wfProfileOut( $fname );
 630         }
 631
 632         /**
 633          * Make sure the form isn't faking a user's credentials.
 634          *
 635          * @param $request WebRequest
 636          * @return bool
 637          * @private
 638          */
 639         function tokenOk( &$request ) {
 640                 global $wgUser;
 641                 $token = $request->getVal( 'wpEditToken' );
 642                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 643                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 644                 return $this->mTokenOk;
 645         }
 646
 647         /**
 648          * Show all applicable editing introductions
 649          */
 650         private function showIntro() {
 651                 global $wgOut, $wgUser;
 652                 if( $this->suppressIntro )
 653                         return;
 654
 655                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exists
 656                 if( $this->mTitle->getNamespace() == NS_USER || $this->mTitle->getNamespace() == NS_USER_TALK ) {
 657                         $parts = explode( '/', $this->mTitle->getText(), 2 );
 658                         $username = $parts[0];
 659                         $id = User::idFromName( $username );
 660                         $ip = User::isIP( $username );
 661
 662                         if ( $id == 0 && !$ip ) {
 663                                 $wgOut->wrapWikiMsg( '<div class="mw-userpage-userdoesnotexist error">$1</div>',
 664                                         array( 'userpage-userdoesnotexist', $username ) );
 665                         }
 666                 }
 667
 668                 if( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 669                         if( $wgUser->isLoggedIn() ) {
 670                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletext">$1</div>', 'newarticletext' );
 671                         } else {
 672                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletextanon">$1</div>', 'newarticletextanon' );
 673                         }
 674                         $this->showDeletionLog( $wgOut );
 675                 }
 676         }
 677
 678         /**
 679          * Attempt to show a custom editing introduction, if supplied
 680          *
 681          * @return bool
 682          */
 683         private function showCustomIntro() {
 684                 if( $this->editintro ) {
 685                         $title = Title::newFromText( $this->editintro );
 686                         if( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 687                                 global $wgOut;
 688                                 $revision = Revision::newFromTitle( $title );
 689                                 $wgOut->addSecondaryWikiText( $revision->getText() );
 690                                 return true;
 691                         } else {
 692                                 return false;
 693                         }
 694                 } else {
 695                         return false;
 696                 }
 697         }
 698
 699         /**
 700          * Attempt submission (no UI)
 701          * @return one of the constants describing the result
 702          */
 703         function internalAttemptSave( &$result, $bot = false ) {
 704                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut, $wgParser;
 705                 global $wgMaxArticleSize;
 706
 707                 $fname = 'EditPage::attemptSave';
 708                 wfProfileIn( $fname );
 709                 wfProfileIn( "$fname-checks" );
 710
 711                 if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 712                 {
 713                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
 714                         return self::AS_HOOK_ERROR;
 715                 }
 716
 717                 # Check image redirect
 718                 if ( $this->mTitle->getNamespace() == NS_IMAGE &&
 719                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 720                         !$wgUser->isAllowed( 'upload' ) ) {
 721                                 if( $wgUser->isAnon() ) {
 722                                         return self::AS_IMAGE_REDIRECT_ANON;
 723                                 } else {
 724                                         return self::AS_IMAGE_REDIRECT_LOGGED;
 725                                 }
 726                 }
 727
 728                 # Reintegrate metadata
 729                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 730                 $this->mMetaData = '' ;
 731
 732                 # Check for spam
 733                 $matches = array();
 734                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 735                         $result['spam'] = $matches[0];
 736                         wfProfileOut( "$fname-checks" );
 737                         wfProfileOut( $fname );
 738                         return self::AS_SPAM_ERROR;
 739                 }
 740                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 741                         # Error messages or other handling should be performed by the filter function
 742                         wfProfileOut( "$fname-checks" );
 743                         wfProfileOut( $fname );
 744                         return self::AS_FILTERING;
 745                 }
 746                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError ) ) ) {
 747                         # Error messages etc. could be handled within the hook...
 748                         wfProfileOut( "$fname-checks" );
 749                         wfProfileOut( $fname );
 750                         return self::AS_HOOK_ERROR;
 751                 } elseif( $this->hookError != '' ) {
 752                         # ...or the hook could be expecting us to produce an error
 753                         wfProfileOut( "$fname-checks" );
 754                         wfProfileOut( $fname );
 755                         return self::AS_HOOK_ERROR_EXPECTED;
 756                 }
 757                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 758                         # Check block state against master, thus 'false'.
 759                         wfProfileOut( "$fname-checks" );
 760                         wfProfileOut( $fname );
 761                         return self::AS_BLOCKED_PAGE_FOR_USER;
 762                 }
 763                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 764                 if ( $this->kblength > $wgMaxArticleSize ) {
 765                         // Error will be displayed by showEditForm()
 766                         $this->tooBig = true;
 767                         wfProfileOut( "$fname-checks" );
 768                         wfProfileOut( $fname );
 769                         return self::AS_CONTENT_TOO_BIG;
 770                 }
 771
 772                 if ( !$wgUser->isAllowed('edit') ) {
 773                         if ( $wgUser->isAnon() ) {
 774                                 wfProfileOut( "$fname-checks" );
 775                                 wfProfileOut( $fname );
 776                                 return self::AS_READ_ONLY_PAGE_ANON;
 777                         }
 778                         else {
 779                                 wfProfileOut( "$fname-checks" );
 780                                 wfProfileOut( $fname );
 781                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 782                         }
 783                 }
 784
 785                 if ( wfReadOnly() ) {
 786                         wfProfileOut( "$fname-checks" );
 787                         wfProfileOut( $fname );
 788                         return self::AS_READ_ONLY_PAGE;
 789                 }
 790                 if ( $wgUser->pingLimiter() ) {
 791                         wfProfileOut( "$fname-checks" );
 792                         wfProfileOut( $fname );
 793                         return self::AS_RATE_LIMITED;
 794                 }
 795
 796                 # If the article has been deleted while editing, don't save it without
 797                 # confirmation
 798                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
 799                         wfProfileOut( "$fname-checks" );
 800                         wfProfileOut( $fname );
 801                         return self::AS_ARTICLE_WAS_DELETED;
 802                 }
 803
 804                 wfProfileOut( "$fname-checks" );
 805
 806                 # If article is new, insert it.
 807                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 808                 if ( 0 == $aid ) {
 809
 810                         // Late check for create permission, just in case *PARANOIA*
 811                         if ( !$this->mTitle->userCan( 'create' ) ) {
 812                                 wfDebug( "$fname: no create permission\n" );
 813                                 wfProfileOut( $fname );
 814                                 return self::AS_NO_CREATE_PERMISSION;
 815                         }
 816
 817                         # Don't save a new article if it's blank.
 818                         if ( '' == $this->textbox1 ) {
 819                                         wfProfileOut( $fname );
 820                                         return self::AS_BLANK_ARTICLE;
 821                         }
 822
 823                         // Run post-section-merge edit filter
 824                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError ) ) ) {
 825                                 # Error messages etc. could be handled within the hook...
 826                                 wfProfileOut( $fname );
 827                                 return self::AS_HOOK_ERROR;
 828                         }
 829
 830                         $isComment = ( $this->section == 'new' );
 831
 832                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 833                                 $this->minoredit, $this->watchthis, false, $isComment, $bot);
 834
 835                         wfProfileOut( $fname );
 836                         return self::AS_SUCCESS_NEW_ARTICLE;
 837                 }
 838
 839                 # Article exists. Check for edit conflict.
 840
 841                 $this->mArticle->clear(); # Force reload of dates, etc.
 842                 $this->mArticle->forUpdate( true ); # Lock the article
 843
 844                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 845
 846                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 847                         $this->isConflict = true;
 848                         if( $this->section == 'new' ) {
 849                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 850                                         $this->mArticle->getComment() == $this->summary ) {
 851                                         // Probably a duplicate submission of a new comment.
 852                                         // This can happen when squid resends a request after
 853                                         // a timeout but the first one actually went through.
 854                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 855                                 } else {
 856                                         // New comment; suppress conflict.
 857                                         $this->isConflict = false;
 858                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 859                                 }
 860                         }
 861                 }
 862                 $userid = $wgUser->getID();
 863
 864                 if ( $this->isConflict) {
 865                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 866                                 $this->mArticle->getTimestamp() . "')\n" );
 867                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 868                 }
 869                 else {
 870                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 871                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 872                 }
 873                 if( is_null( $text ) ) {
 874                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 875                         $this->isConflict = true;
 876                         $text = $this->textbox1;
 877                 }
 878
 879                 # Suppress edit conflict with self, except for section edits where merging is required.
 880                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 881                         wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
 882                         $this->isConflict = false;
 883                 } else {
 884                         # switch from section editing to normal editing in edit conflict
 885                         if($this->isConflict) {
 886                                 # Attempt merge
 887                                 if( $this->mergeChangesInto( $text ) ){
 888                                         // Successful merge! Maybe we should tell the user the good news?
 889                                         $this->isConflict = false;
 890                                         wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
 891                                 } else {
 892                                         $this->section = '';
 893                                         $this->textbox1 = $text;
 894                                         wfDebug( "EditPage::editForm Keeping edit conflict, failed merge.\n" );
 895                                 }
 896                         }
 897                 }
 898
 899                 if ( $this->isConflict ) {
 900                         wfProfileOut( $fname );
 901                         return self::AS_CONFLICT_DETECTED;
 902                 }
 903
 904                 $oldtext = $this->mArticle->getContent();
 905
 906                 // Run post-section-merge edit filter
 907                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError ) ) ) {
 908                         # Error messages etc. could be handled within the hook...
 909                         wfProfileOut( $fname );
 910                         return self::AS_HOOK_ERROR;
 911                 }
 912
 913                 # Handle the user preference to force summaries here, but not for null edits
 914                 if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
 915                         &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
 916                         if( md5( $this->summary ) == $this->autoSumm ) {
 917                                 $this->missingSummary = true;
 918                                 wfProfileOut( $fname );
 919                                 return self::AS_SUMMARY_NEEDED;
 920                         }
 921                 }
 922
 923                 #And a similar thing for new sections
 924                 if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 925                         if (trim($this->summary) == '') {
 926                                 $this->missingSummary = true;
 927                                 wfProfileOut( $fname );
 928                                 return self::AS_SUMMARY_NEEDED;
 929                         }
 930                 }
 931
 932                 # All's well
 933                 wfProfileIn( "$fname-sectionanchor" );
 934                 $sectionanchor = '';
 935                 if( $this->section == 'new' ) {
 936                         if ( $this->textbox1 == '' ) {
 937                                 $this->missingComment = true;
 938                                 return self::AS_TEXTBOX_EMPTY;
 939                         }
 940                         if( $this->summary != '' ) {
 941                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
 942                                 # This is a new section, so create a link to the new section
 943                                 # in the revision summary.
 944                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
 945                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
 946                         }
 947                 } elseif( $this->section != '' ) {
 948                         # Try to get a section anchor from the section source, redirect to edited section if header found
 949                         # XXX: might be better to integrate this into Article::replaceSection
 950                         # for duplicate heading checking and maybe parsing
 951                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 952                         # we can't deal with anchors, includes, html etc in the header for now,
 953                         # headline would need to be parsed to improve this
 954                         if($hasmatch and strlen($matches[2]) > 0) {
 955                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
 956                         }
 957                 }
 958                 wfProfileOut( "$fname-sectionanchor" );
 959
 960                 // Save errors may fall down to the edit form, but we've now
 961                 // merged the section into full text. Clear the section field
 962                 // so that later submission of conflict forms won't try to
 963                 // replace that into a duplicated mess.
 964                 $this->textbox1 = $text;
 965                 $this->section = '';
 966
 967                 // Check for length errors again now that the section is merged in
 968                 $this->kblength = (int)(strlen( $text ) / 1024);
 969                 if ( $this->kblength > $wgMaxArticleSize ) {
 970                         $this->tooBig = true;
 971                         wfProfileOut( $fname );
 972                         return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
 973                 }
 974
 975                 # update the article here
 976                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 977                         $this->watchthis, $bot, $sectionanchor ) ) {
 978                         wfProfileOut( $fname );
 979                         return self::AS_SUCCESS_UPDATE;
 980                 } else {
 981                         $this->isConflict = true;
 982                 }
 983                 wfProfileOut( $fname );
 984                 return self::AS_END;
 985         }
 986
 987         /**
 988          * Initialise form fields in the object
 989          * Called on the first invocation, e.g. when a user clicks an edit link
 990          */
 991         function initialiseForm() {
 992                 $this->edittime = $this->mArticle->getTimestamp();
 993                 $this->textbox1 = $this->getContent(false);
 994                 if ($this->textbox1 === false) return false;
 995
 996                 if ( !$this->mArticle->exists() && $this->mTitle->getNamespace() == NS_MEDIAWIKI )
 997                         $this->textbox1 = wfMsgWeirdKey( $this->mTitle->getText() );
 998                 wfProxyCheck();
 999                 return true;
1000         }
1001
1002         /**
1003          * Send the edit form and related headers to $wgOut
1004          * @param $formCallback Optional callable that takes an OutputPage
1005          *                      parameter; will be called during form output
1006          *                      near the top, for captchas and the like.
1007          */
1008         function showEditForm( $formCallback=null ) {
1009                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle;
1010
1011                 # If $wgTitle is null, that means we're in API mode.
1012                 # Some hook probably called this function  without checking
1013                 # for is_null($wgTitle) first. Bail out right here so we don't
1014                 # do lots of work just to discard it right after.
1015                 if(is_null($wgTitle))
1016                         return;
1017
1018                 $fname = 'EditPage::showEditForm';
1019                 wfProfileIn( $fname );
1020
1021                 $sk = $wgUser->getSkin();
1022
1023                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
1024
1025                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
1026
1027                 # Enabled article-related sidebar, toplinks, etc.
1028                 $wgOut->setArticleRelated( true );
1029
1030                 if ( $this->formtype == 'preview' ) {
1031                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
1032                 }
1033
1034                 if ( $this->isConflict ) {
1035                         $s = wfMsg( 'editconflict', $wgTitle->getPrefixedText() );
1036                         $wgOut->setPageTitle( $s );
1037                         $wgOut->addWikiMsg( 'explainconflict' );
1038
1039                         $this->textbox2 = $this->textbox1;
1040                         $this->textbox1 = $this->getContent();
1041                         $this->edittime = $this->mArticle->getTimestamp();
1042                 } else {
1043                         if( $this->section != '' ) {
1044                                 if( $this->section == 'new' ) {
1045                                         $s = wfMsg('editingcomment', $wgTitle->getPrefixedText() );
1046                                 } else {
1047                                         $s = wfMsg('editingsection', $wgTitle->getPrefixedText() );
1048                                         $matches = array();
1049                                         if( !$this->summary && !$this->preview && !$this->diff ) {
1050                                                 preg_match( "/^(=+)(.+)\\1/mi",
1051                                                         $this->textbox1,
1052                                                         $matches );
1053                                                 if( !empty( $matches[2] ) ) {
1054                                                         global $wgParser;
1055                                                         $this->summary = "/* " .
1056                                                                 $wgParser->stripSectionName(trim($matches[2])) .
1057                                                                 " */ ";
1058                                                 }
1059                                         }
1060                                 }
1061                         } else {
1062                                 $s = wfMsg( 'editing', $wgTitle->getPrefixedText() );
1063                         }
1064                         $wgOut->setPageTitle( $s );
1065
1066                         if ( $this->missingComment ) {
1067                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommenttext">$1</div>',  'missingcommenttext' );
1068                         }
1069
1070                         if( $this->missingSummary && $this->section != 'new' ) {
1071                                 $wgOut->wrapWikiMsg( '<div id="mw-missingsummary">$1</div>', 'missingsummary' );
1072                         }
1073
1074                         if( $this->missingSummary && $this->section == 'new' ) {
1075                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommentheader">$1</div>', 'missingcommentheader' );
1076                         }
1077
1078                         if( $this->hookError !== '' ) {
1079                                 $wgOut->addWikiText( $this->hookError );
1080                         }
1081
1082                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1083                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1084                         }
1085                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1086                         // Let sysop know that this will make private content public if saved
1087
1088                                 if( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1089                                         $wgOut->addWikiMsg( 'rev-deleted-text-permission' );
1090                                 } else if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1091                                         $wgOut->addWikiMsg( 'rev-deleted-text-view' );
1092                                 }
1093
1094                                 if( !$this->mArticle->mRevision->isCurrent() ) {
1095                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1096                                         $wgOut->addWikiMsg( 'editingold' );
1097                                 }
1098                         }
1099                 }
1100
1101                 if( wfReadOnly() ) {
1102                         $wgOut->addHTML( '<div id="mw-read-only-warning">'.wfMsgWikiHTML( 'readonlywarning' ).'</div>' );
1103                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
1104                         $wgOut->addHTML( '<div id="mw-anon-edit-warning">'.wfMsgWikiHTML( 'anoneditwarning' ).'</div>' );
1105                 } else {
1106                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
1107                                 # Check the skin exists
1108                                 if( $this->isValidCssJsSubpage ) {
1109                                         $wgOut->addWikiMsg( 'usercssjsyoucanpreview' );
1110                                 } else {
1111                                         $wgOut->addWikiMsg( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() );
1112                                 }
1113                         }
1114                 }
1115
1116                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1117                         # Show a warning if editing an interface message
1118                         $wgOut->addWikiMsg( 'editinginterface' );
1119                 } elseif( $this->mTitle->isProtected( 'edit' ) ) {
1120                         # Is the title semi-protected?
1121                         if( $this->mTitle->isSemiProtected() ) {
1122                                 $noticeMsg = 'semiprotectedpagewarning';
1123                         } else {
1124                                 # Then it must be protected based on static groups (regular)
1125                                 $noticeMsg = 'protectedpagewarning';
1126                         }
1127                         $wgOut->addWikiMsg( $noticeMsg );
1128                 }
1129                 if ( $this->mTitle->isCascadeProtected() ) {
1130                         # Is this page under cascading protection from some source pages?
1131                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1132                         $notice = "$1\n";
1133                         if ( count($cascadeSources) > 0 ) {
1134                                 # Explain, and list the titles responsible
1135                                 foreach( $cascadeSources as $page ) {
1136                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1137                                 }
1138                         }
1139                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', count($cascadeSources) ) );
1140                 }
1141                 if( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) != array() ){
1142                         $wgOut->addWikiMsg( 'titleprotectedwarning' );
1143                 }
1144
1145                 if ( $this->kblength === false ) {
1146                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1147                 }
1148                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1149                         $wgOut->addWikiMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize );
1150                 } elseif( $this->kblength > 29 ) {
1151                         $wgOut->addWikiMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) );
1152                 }
1153
1154                 #need to parse the preview early so that we know which templates are used,
1155                 #otherwise users with "show preview after edit box" will get a blank list
1156                 if ( $this->formtype == 'preview' ) {
1157                         $previewOutput = $this->getPreviewText();
1158                 }
1159
1160                 $rows = $wgUser->getIntOption( 'rows' );
1161                 $cols = $wgUser->getIntOption( 'cols' );
1162
1163                 $ew = $wgUser->getOption( 'editwidth' );
1164                 if ( $ew ) $ew = " style=\"width:100%\"";
1165                 else $ew = '';
1166
1167                 $q = 'action=submit';
1168                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
1169                 $action = $wgTitle->escapeLocalURL( $q );
1170
1171                 $summary = wfMsg('summary');
1172                 $subject = wfMsg('subject');
1173
1174                 $cancel = $sk->makeKnownLink( $wgTitle->getPrefixedText(),
1175                                 wfMsgExt('cancel', array('parseinline')) );
1176                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1177                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1178                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1179                         htmlspecialchars( wfMsg( 'newwindow' ) );
1180
1181                 global $wgRightsText;
1182                 if ( $wgRightsText ) {
1183                         $copywarnMsg = array( 'copyrightwarning',
1184                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1185                                 $wgRightsText );
1186                 } else {
1187                         $copywarnMsg = array( 'copyrightwarning2',
1188                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
1189                 }
1190
1191                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1192                         # prepare toolbar for edit buttons
1193                         $toolbar = $this->getEditToolbar();
1194                 } else {
1195                         $toolbar = '';
1196                 }
1197
1198                 // activate checkboxes if user wants them to be always active
1199                 if( !$this->preview && !$this->diff ) {
1200                         # Sort out the "watch" checkbox
1201                         if( $wgUser->getOption( 'watchdefault' ) ) {
1202                                 # Watch all edits
1203                                 $this->watchthis = true;
1204                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1205                                 # Watch creations
1206                                 $this->watchthis = true;
1207                         } elseif( $this->mTitle->userIsWatching() ) {
1208                                 # Already watched
1209                                 $this->watchthis = true;
1210                         }
1211
1212                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1213                 }
1214
1215                 $wgOut->addHTML( $this->editFormPageTop );
1216
1217                 if ( $wgUser->getOption( 'previewontop' ) ) {
1218
1219                         if ( 'preview' == $this->formtype ) {
1220                                 $this->showPreview( $previewOutput );
1221                         } else {
1222                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1223                         }
1224
1225                         if ( 'diff' == $this->formtype ) {
1226                                 $this->showDiff();
1227                         }
1228                 }
1229
1230
1231                 $wgOut->addHTML( $this->editFormTextTop );
1232
1233                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1234                 # Otherwise, show a summary field at the bottom
1235                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
1236
1237                 # If a blank edit summary was previously provided, and the appropriate
1238                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1239                 # user being bounced back more than once in the event that a summary
1240                 # is not required.
1241                 #####
1242                 # For a bit more sophisticated detection of blank summaries, hash the
1243                 # automatic one and pass that in the hidden field wpAutoSummary.
1244                 $summaryhiddens =  '';
1245                 if( $this->missingSummary ) $summaryhiddens .= wfHidden( 'wpIgnoreBlankSummary', true );
1246                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1247                 $summaryhiddens .= wfHidden( 'wpAutoSummary', $autosumm );
1248                 if( $this->section == 'new' ) {
1249                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' />{$summaryhiddens}<br />";
1250                         $editsummary = '';
1251                         $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1252                         $summarypreview = '';
1253                 } else {
1254                         $commentsubject = '';
1255                         $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' />{$summaryhiddens}<br />";
1256                         $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1257                         $subjectpreview = '';
1258                 }
1259
1260                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1261                 if( !$this->preview && !$this->diff ) {
1262                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1263                 }
1264                 $templates = ($this->preview || $this->section != '') ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
1265                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1266
1267                 $hiddencats = $this->mArticle->getHiddenCategories();
1268                 $formattedhiddencats = $sk->formatHiddenCategories( $hiddencats );
1269
1270                 global $wgUseMetadataEdit ;
1271                 if ( $wgUseMetadataEdit ) {
1272                         $metadata = $this->mMetaData ;
1273                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1274                         $top = wfMsgWikiHtml( 'metadata_help' );
1275                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1276                 }
1277                 else $metadata = "" ;
1278
1279                 $hidden = '';
1280                 $recreate = '';
1281                 if ($this->wasDeletedSinceLastEdit()) {
1282                         if ( 'save' != $this->formtype ) {
1283                                 $wgOut->addWikiMsg('deletedwhileediting');
1284                         } else {
1285                                 // Hide the toolbar and edit area, use can click preview to get it back
1286                                 // Add an confirmation checkbox and explanation.
1287                                 $toolbar = '';
1288                                 $hidden = 'type="hidden" style="display:none;"';
1289                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
1290                                 $recreate .=
1291                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
1292                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
1293                         }
1294                 }
1295
1296                 $tabindex = 2;
1297
1298                 $checkboxes = self::getCheckboxes( $tabindex, $sk,
1299                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1300
1301                 $checkboxhtml = implode( $checkboxes, "\n" );
1302
1303                 $buttons = $this->getEditButtons( $tabindex );
1304                 $buttonshtml = implode( $buttons, "\n" );
1305
1306                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1307                         ? '' : Xml::hidden( 'safemode', '1' );
1308
1309                 $wgOut->addHTML( <<<END
1310 {$toolbar}
1311 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1312 END
1313 );
1314
1315                 if( is_callable( $formCallback ) ) {
1316                         call_user_func_array( $formCallback, array( &$wgOut ) );
1317                 }
1318
1319                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1320
1321                 // Put these up at the top to ensure they aren't lost on early form submission
1322                 $wgOut->addHTML( "
1323 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1324 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1325 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1326 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1327
1328                 $wgOut->addHTML( <<<END
1329 $recreate
1330 {$commentsubject}
1331 {$subjectpreview}
1332 {$this->editFormTextBeforeContent}
1333 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1334 cols='{$cols}'{$ew} $hidden>
1335 END
1336 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) ) .
1337 "
1338 </textarea>
1339                 " );
1340
1341                 $wgOut->wrapWikiMsg( "<div id=\"editpage-copywarn\">\n$1\n</div>", $copywarnMsg );
1342                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1343                 $wgOut->addHTML( "
1344 {$metadata}
1345 {$editsummary}
1346 {$summarypreview}
1347 {$checkboxhtml}
1348 {$safemodehtml}
1349 ");
1350
1351                 $wgOut->addHTML(
1352 "<div class='editButtons'>
1353 {$buttonshtml}
1354         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1355 </div><!-- editButtons -->
1356 </div><!-- editOptions -->");
1357
1358                 /**
1359                  * To make it harder for someone to slip a user a page
1360                  * which submits an edit form to the wiki without their
1361                  * knowledge, a random token is associated with the login
1362                  * session. If it's not passed back with the submission,
1363                  * we won't save the page, or render user JavaScript and
1364                  * CSS previews.
1365                  *
1366                  * For anon editors, who may not have a session, we just
1367                  * include the constant suffix to prevent editing from
1368                  * broken text-mangling proxies.
1369                  */
1370                 $token = htmlspecialchars( $wgUser->editToken() );
1371                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1372
1373                 $wgOut->addHtml( '<div class="mw-editTools">' );
1374                 $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
1375                 $wgOut->addHtml( '</div>' );
1376
1377                 $wgOut->addHTML( $this->editFormTextAfterTools );
1378
1379                 $wgOut->addHTML( "
1380 <div class='templatesUsed'>
1381 {$formattedtemplates}
1382 </div>
1383 <div class='hiddencats'>
1384 {$formattedhiddencats}
1385 </div>
1386 ");
1387
1388                 if ( $this->isConflict ) {
1389                         $wgOut->wrapWikiMsg( '==$1==', "yourdiff" );
1390
1391                         $de = new DifferenceEngine( $this->mTitle );
1392                         $de->setText( $this->textbox2, $this->textbox1 );
1393                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1394
1395                         $wgOut->wrapWikiMsg( '==$1==', "yourtext" );
1396                         $wgOut->addHTML( "<textarea tabindex='6' id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}'>"
1397                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1398                 }
1399                 $wgOut->addHTML( $this->editFormTextBottom );
1400                 $wgOut->addHTML( "</form>\n" );
1401                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1402
1403                         if ( $this->formtype == 'preview') {
1404                                 $this->showPreview( $previewOutput );
1405                         } else {
1406                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1407                         }
1408
1409                         if ( $this->formtype == 'diff') {
1410                                 $this->showDiff();
1411                         }
1412
1413                 }
1414
1415                 wfProfileOut( $fname );
1416         }
1417
1418         /**
1419          * Append preview output to $wgOut.
1420          * Includes category rendering if this is a category page.
1421          *
1422          * @param string $text The HTML to be output for the preview.
1423          */
1424         private function showPreview( $text ) {
1425                 global $wgOut;
1426
1427                 $wgOut->addHTML( '<div id="wikiPreview">' );
1428                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1429                         $this->mArticle->openShowCategory();
1430                 }
1431                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1432                 $wgOut->addHTML( $text );
1433                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1434                         $this->mArticle->closeShowCategory();
1435                 }
1436                 $wgOut->addHTML( '</div>' );
1437         }
1438
1439         /**
1440          * Live Preview lets us fetch rendered preview page content and
1441          * add it to the page without refreshing the whole page.
1442          * If not supported by the browser it will fall through to the normal form
1443          * submission method.
1444          *
1445          * This function outputs a script tag to support live preview, and
1446          * returns an onclick handler which should be added to the attributes
1447          * of the preview button
1448          */
1449         function doLivePreviewScript() {
1450                 global $wgStylePath, $wgJsMimeType, $wgStyleVersion, $wgOut, $wgTitle;
1451                 $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
1452                         htmlspecialchars( "$wgStylePath/common/preview.js?$wgStyleVersion" ) .
1453                         '"></script>' . "\n" );
1454                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1455                 return "return !lpDoPreview(" .
1456                         "editform.wpTextbox1.value," .
1457                         '"' . $liveAction . '"' . ")";
1458         }
1459
1460         function getLastDelete() {
1461                 $dbr = wfGetDB( DB_SLAVE );
1462                 $fname = 'EditPage::getLastDelete';
1463                 $res = $dbr->select(
1464                         array( 'logging', 'user' ),
1465                         array( 'log_type',
1466                                'log_action',
1467                                'log_timestamp',
1468                                'log_user',
1469                                'log_namespace',
1470                                'log_title',
1471                                'log_comment',
1472                                'log_params',
1473                                'user_name', ),
1474                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1475                                'log_title' => $this->mTitle->getDBkey(),
1476                                'log_type' => 'delete',
1477                                'log_action' => 'delete',
1478                                'user_id=log_user' ),
1479                         $fname,
1480                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1481
1482                 if($dbr->numRows($res) == 1) {
1483                         while ( $x = $dbr->fetchObject ( $res ) )
1484                                 $data = $x;
1485                         $dbr->freeResult ( $res ) ;
1486                 } else {
1487                         $data = null;
1488                 }
1489                 return $data;
1490         }
1491
1492         /**
1493          * @todo document
1494          */
1495         function getPreviewText() {
1496                 global $wgOut, $wgUser, $wgTitle, $wgParser;
1497
1498                 $fname = 'EditPage::getPreviewText';
1499                 wfProfileIn( $fname );
1500
1501                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1502                         if ( $this->mTokenOkExceptSuffix ) {
1503                                 $note = wfMsg( 'token_suffix_mismatch' );
1504                         } else {
1505                                 $note = wfMsg( 'session_fail_preview' );
1506                         }
1507                 } else {
1508                         $note = wfMsg( 'previewnote' );
1509                 }
1510
1511                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1512                 $parserOptions->setEditSection( false );
1513
1514                 global $wgRawHtml;
1515                 if( $wgRawHtml && !$this->mTokenOk ) {
1516                         // Could be an offsite preview attempt. This is very unsafe if
1517                         // HTML is enabled, as it could be an attack.
1518                         return $wgOut->parse( "<div class='previewnote'>" .
1519                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1520                 }
1521
1522                 # don't parse user css/js, show message about preview
1523                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1524
1525                 if ( $this->isCssJsSubpage ) {
1526                         if(preg_match("/\\.css$/", $this->mTitle->getText() ) ) {
1527                                 $previewtext = wfMsg('usercsspreview');
1528                         } else if(preg_match("/\\.js$/", $this->mTitle->getText() ) ) {
1529                                 $previewtext = wfMsg('userjspreview');
1530                         }
1531                         $parserOptions->setTidy(true);
1532                         $parserOutput = $wgParser->parse( $previewtext , $this->mTitle, $parserOptions );
1533                         $wgOut->addHTML( $parserOutput->mText );
1534                         $previewHTML = '';
1535                 } else {
1536                         $toparse = $this->textbox1;
1537
1538                         # If we're adding a comment, we need to show the
1539                         # summary as the headline
1540                         if($this->section=="new" && $this->summary!="") {
1541                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1542                         }
1543
1544                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
1545                         $parserOptions->setTidy(true);
1546                         $parserOptions->enableLimitReport();
1547                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
1548                                         $this->mTitle, $parserOptions );
1549
1550                         $previewHTML = $parserOutput->getText();
1551                         $wgOut->addParserOutputNoText( $parserOutput );
1552
1553                         # ParserOutput might have altered the page title, so reset it
1554                         # Also, use the title defined by DISPLAYTITLE magic word when present
1555                         if( ( $dt = $parserOutput->getDisplayTitle() ) !== false ) {
1556                                 $wgOut->setPageTitle( wfMsg( 'editing', $dt ) );
1557                         } else {
1558                                 $wgOut->setPageTitle( wfMsg( 'editing', $wgTitle->getPrefixedText() ) );
1559                         }
1560
1561                         foreach ( $parserOutput->getTemplates() as $ns => $template)
1562                                 foreach ( array_keys( $template ) as $dbk)
1563                                         $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
1564
1565                         if ( count( $parserOutput->getWarnings() ) ) {
1566                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
1567                         }
1568                 }
1569
1570                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1571                         "<div class='previewnote'>" . $wgOut->parse( $note ) . "</div>\n";
1572                 if ( $this->isConflict ) {
1573                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1574                 }
1575
1576                 wfProfileOut( $fname );
1577                 return $previewhead . $previewHTML;
1578         }
1579
1580         /**
1581          * Call the stock "user is blocked" page
1582          */
1583         function blockedPage() {
1584                 global $wgOut, $wgUser;
1585                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1586
1587                 # If the user made changes, preserve them when showing the markup
1588                 # (This happens when a user is blocked during edit, for instance)
1589                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1590                 if( $first ) {
1591                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1592                 } else {
1593                         $source = $this->textbox1;
1594                 }
1595
1596                 # Spit out the source or the user's modified version
1597                 if( $source !== false ) {
1598                         $rows = $wgUser->getOption( 'rows' );
1599                         $cols = $wgUser->getOption( 'cols' );
1600                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1601                         $wgOut->addHtml( '<hr />' );
1602                         $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
1603                         $wgOut->addHtml( wfOpenElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . wfCloseElement( 'textarea' ) );
1604                 }
1605         }
1606
1607         /**
1608          * Produce the stock "please login to edit pages" page
1609          */
1610         function userNotLoggedInPage() {
1611                 global $wgUser, $wgOut, $wgTitle;
1612                 $skin = $wgUser->getSkin();
1613
1614                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1615                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $wgTitle->getPrefixedUrl() );
1616
1617                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1618                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1619                 $wgOut->setArticleRelated( false );
1620
1621                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1622                 $wgOut->returnToMain( false, $wgTitle );
1623         }
1624
1625         /**
1626          * Creates a basic error page which informs the user that
1627          * they have attempted to edit a nonexistant section.
1628          */
1629         function noSuchSectionPage() {
1630                 global $wgOut, $wgTitle;
1631
1632                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1633                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1634                 $wgOut->setArticleRelated( false );
1635
1636                 $wgOut->addWikiMsg( 'nosuchsectiontext', $this->section );
1637                 $wgOut->returnToMain( false, $wgTitle );
1638         }
1639
1640         /**
1641          * Produce the stock "your edit contains spam" page
1642          *
1643          * @param $match Text which triggered one or more filters
1644          */
1645         function spamPage( $match = false ) {
1646                 global $wgOut, $wgTitle;
1647
1648                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1649                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1650                 $wgOut->setArticleRelated( false );
1651
1652                 $wgOut->addHtml( '<div id="spamprotected">' );
1653                 $wgOut->addWikiMsg( 'spamprotectiontext' );
1654                 if ( $match )
1655                         $wgOut->addWikiMsg( 'spamprotectionmatch',wfEscapeWikiText( $match ) );
1656                 $wgOut->addHtml( '</div>' );
1657
1658                 $wgOut->returnToMain( false, $wgTitle );
1659         }
1660
1661         /**
1662          * @private
1663          * @todo document
1664          */
1665         function mergeChangesInto( &$editText ){
1666                 $fname = 'EditPage::mergeChangesInto';
1667                 wfProfileIn( $fname );
1668
1669                 $db = wfGetDB( DB_MASTER );
1670
1671                 // This is the revision the editor started from
1672                 $baseRevision = Revision::loadFromTimestamp(
1673                         $db, $this->mTitle, $this->edittime );
1674                 if( is_null( $baseRevision ) ) {
1675                         wfProfileOut( $fname );
1676                         return false;
1677                 }
1678                 $baseText = $baseRevision->getText();
1679
1680                 // The current state, we want to merge updates into it
1681                 $currentRevision =  Revision::loadFromTitle(
1682                         $db, $this->mTitle );
1683                 if( is_null( $currentRevision ) ) {
1684                         wfProfileOut( $fname );
1685                         return false;
1686                 }
1687                 $currentText = $currentRevision->getText();
1688
1689                 $result = '';
1690                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1691                         $editText = $result;
1692                         wfProfileOut( $fname );
1693                         return true;
1694                 } else {
1695                         wfProfileOut( $fname );
1696                         return false;
1697                 }
1698         }
1699
1700         /**
1701          * Check if the browser is on a blacklist of user-agents known to
1702          * mangle UTF-8 data on form submission. Returns true if Unicode
1703          * should make it through, false if it's known to be a problem.
1704          * @return bool
1705          * @private
1706          */
1707         function checkUnicodeCompliantBrowser() {
1708                 global $wgBrowserBlackList;
1709                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1710                         // No User-Agent header sent? Trust it by default...
1711                         return true;
1712                 }
1713                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1714                 foreach ( $wgBrowserBlackList as $browser ) {
1715                         if ( preg_match($browser, $currentbrowser) ) {
1716                                 return false;
1717                         }
1718                 }
1719                 return true;
1720         }
1721
1722         /**
1723          * @deprecated use $wgParser->stripSectionName()
1724          */
1725         function pseudoParseSectionAnchor( $text ) {
1726                 global $wgParser;
1727                 return $wgParser->stripSectionName( $text );
1728         }
1729
1730         /**
1731          * Format an anchor fragment as it would appear for a given section name
1732          * @param string $text
1733          * @return string
1734          * @private
1735          */
1736         function sectionAnchor( $text ) {
1737                 global $wgParser;
1738                 return $wgParser->guessSectionNameFromWikiText( $text );
1739         }
1740
1741         /**
1742          * Shows a bulletin board style toolbar for common editing functions.
1743          * It can be disabled in the user preferences.
1744          * The necessary JavaScript code can be found in style/wikibits.js.
1745          */
1746         function getEditToolbar() {
1747                 global $wgStylePath, $wgContLang, $wgJsMimeType;
1748
1749                 /**
1750                  * toolarray an array of arrays which each include the filename of
1751                  * the button image (without path), the opening tag, the closing tag,
1752                  * and optionally a sample text that is inserted between the two when no
1753                  * selection is highlighted.
1754                  * The tip text is shown when the user moves the mouse over the button.
1755                  *
1756                  * Already here are accesskeys (key), which are not used yet until someone
1757                  * can figure out a way to make them work in IE. However, we should make
1758                  * sure these keys are not defined on the edit page.
1759                  */
1760                 $toolarray = array(
1761                         array(  'image' => 'button_bold.png',
1762                                 'id'    => 'mw-editbutton-bold',
1763                                 'open'  => '\'\'\'',
1764                                 'close' => '\'\'\'',
1765                                 'sample'=> wfMsg('bold_sample'),
1766                                 'tip'   => wfMsg('bold_tip'),
1767                                 'key'   => 'B'
1768                         ),
1769                         array(  'image' => 'button_italic.png',
1770                                 'id'    => 'mw-editbutton-italic',
1771                                 'open'  => '\'\'',
1772                                 'close' => '\'\'',
1773                                 'sample'=> wfMsg('italic_sample'),
1774                                 'tip'   => wfMsg('italic_tip'),
1775                                 'key'   => 'I'
1776                         ),
1777                         array(  'image' => 'button_link.png',
1778                                 'id'    => 'mw-editbutton-link',
1779                                 'open'  => '[[',
1780                                 'close' => ']]',
1781                                 'sample'=> wfMsg('link_sample'),
1782                                 'tip'   => wfMsg('link_tip'),
1783                                 'key'   => 'L'
1784                         ),
1785                         array(  'image' => 'button_extlink.png',
1786                                 'id'    => 'mw-editbutton-extlink',
1787                                 'open'  => '[',
1788                                 'close' => ']',
1789                                 'sample'=> wfMsg('extlink_sample'),
1790                                 'tip'   => wfMsg('extlink_tip'),
1791                                 'key'   => 'X'
1792                         ),
1793                         array(  'image' => 'button_headline.png',
1794                                 'id'    => 'mw-editbutton-headline',
1795                                 'open'  => "\n== ",
1796                                 'close' => " ==\n",
1797                                 'sample'=> wfMsg('headline_sample'),
1798                                 'tip'   => wfMsg('headline_tip'),
1799                                 'key'   => 'H'
1800                         ),
1801                         array(  'image' => 'button_image.png',
1802                                 'id'    => 'mw-editbutton-image',
1803                                 'open'  => '[['.$wgContLang->getNsText(NS_IMAGE).":",
1804                                 'close' => ']]',
1805                                 'sample'=> wfMsg('image_sample'),
1806                                 'tip'   => wfMsg('image_tip'),
1807                                 'key'   => 'D'
1808                         ),
1809                         array(  'image' => 'button_media.png',
1810                                 'id'    => 'mw-editbutton-media',
1811                                 'open'  => '[['.$wgContLang->getNsText(NS_MEDIA).':',
1812                                 'close' => ']]',
1813                                 'sample'=> wfMsg('media_sample'),
1814                                 'tip'   => wfMsg('media_tip'),
1815                                 'key'   => 'M'
1816                         ),
1817                         array(  'image' => 'button_math.png',
1818                                 'id'    => 'mw-editbutton-math',
1819                                 'open'  => "<math>",
1820                                 'close' => "</math>",
1821                                 'sample'=> wfMsg('math_sample'),
1822                                 'tip'   => wfMsg('math_tip'),
1823                                 'key'   => 'C'
1824                         ),
1825                         array(  'image' => 'button_nowiki.png',
1826                                 'id'    => 'mw-editbutton-nowiki',
1827                                 'open'  => "<nowiki>",
1828                                 'close' => "</nowiki>",
1829                                 'sample'=> wfMsg('nowiki_sample'),
1830                                 'tip'   => wfMsg('nowiki_tip'),
1831                                 'key'   => 'N'
1832                         ),
1833                         array(  'image' => 'button_sig.png',
1834                                 'id'    => 'mw-editbutton-signature',
1835                                 'open'  => '--~~~~',
1836                                 'close' => '',
1837                                 'sample'=> '',
1838                                 'tip'   => wfMsg('sig_tip'),
1839                                 'key'   => 'Y'
1840                         ),
1841                         array(  'image' => 'button_hr.png',
1842                                 'id'    => 'mw-editbutton-hr',
1843                                 'open'  => "\n----\n",
1844                                 'close' => '',
1845                                 'sample'=> '',
1846                                 'tip'   => wfMsg('hr_tip'),
1847                                 'key'   => 'R'
1848                         )
1849                 );
1850                 $toolbar = "<div id='toolbar'>\n";
1851                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1852
1853                 foreach($toolarray as $tool) {
1854                         $params = array(
1855                                 $image = $wgStylePath.'/common/images/'.$tool['image'],
1856                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1857                                 // Older browsers show a "speedtip" type message only for ALT.
1858                                 // Ideally these should be different, realistically they
1859                                 // probably don't need to be.
1860                                 $tip = $tool['tip'],
1861                                 $open = $tool['open'],
1862                                 $close = $tool['close'],
1863                                 $sample = $tool['sample'],
1864                                 $cssId = $tool['id'],
1865                         );
1866
1867                         $paramList = implode( ',',
1868                                 array_map( array( 'Xml', 'encodeJsVar' ), $params ) );
1869                         $toolbar.="addButton($paramList);\n";
1870                 }
1871
1872                 $toolbar.="/*]]>*/\n</script>";
1873                 $toolbar.="\n</div>";
1874                 return $toolbar;
1875         }
1876
1877         /**
1878          * Returns an array of html code of the following checkboxes:
1879          * minor and watch
1880          *
1881          * @param $tabindex Current tabindex
1882          * @param $skin Skin object
1883          * @param $checked Array of checkbox => bool, where bool indicates the checked
1884          *                 status of the checkbox
1885          *
1886          * @return array
1887          */
1888         public static function getCheckboxes( &$tabindex, $skin, $checked ) {
1889                 global $wgUser;
1890
1891                 $checkboxes = array();
1892
1893                 $checkboxes['minor'] = '';
1894                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
1895                 if ( $wgUser->isAllowed('minoredit') ) {
1896                         $attribs = array(
1897                                 'tabindex'  => ++$tabindex,
1898                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
1899                                 'id'        => 'wpMinoredit',
1900                         );
1901                         $checkboxes['minor'] =
1902                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
1903                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltipAndAccesskey('minoredit').">{$minorLabel}</label>";
1904                 }
1905
1906                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
1907                 $checkboxes['watch'] = '';
1908                 if ( $wgUser->isLoggedIn() ) {
1909                         $attribs = array(
1910                                 'tabindex'  => ++$tabindex,
1911                                 'accesskey' => wfMsg( 'accesskey-watch' ),
1912                                 'id'        => 'wpWatchthis',
1913                         );
1914                         $checkboxes['watch'] =
1915                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
1916                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltipAndAccesskey('watch').">{$watchLabel}</label>";
1917                 }
1918                 return $checkboxes;
1919         }
1920
1921         /**
1922          * Returns an array of html code of the following buttons:
1923          * save, diff, preview and live
1924          *
1925          * @param $tabindex Current tabindex
1926          *
1927          * @return array
1928          */
1929         public function getEditButtons(&$tabindex) {
1930                 global $wgLivePreview, $wgUser;
1931
1932                 $buttons = array();
1933
1934                 $temp = array(
1935                         'id'        => 'wpSave',
1936                         'name'      => 'wpSave',
1937                         'type'      => 'submit',
1938                         'tabindex'  => ++$tabindex,
1939                         'value'     => wfMsg('savearticle'),
1940                         'accesskey' => wfMsg('accesskey-save'),
1941                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
1942                 );
1943                 $buttons['save'] = wfElement('input', $temp, '');
1944
1945                 ++$tabindex; // use the same for preview and live preview
1946                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
1947                         $temp = array(
1948                                 'id'        => 'wpPreview',
1949                                 'name'      => 'wpPreview',
1950                                 'type'      => 'submit',
1951                                 'tabindex'  => $tabindex,
1952                                 'value'     => wfMsg('showpreview'),
1953                                 'accesskey' => '',
1954                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1955                                 'style'     => 'display: none;',
1956                         );
1957                         $buttons['preview'] = wfElement('input', $temp, '');
1958
1959                         $temp = array(
1960                                 'id'        => 'wpLivePreview',
1961                                 'name'      => 'wpLivePreview',
1962                                 'type'      => 'submit',
1963                                 'tabindex'  => $tabindex,
1964                                 'value'     => wfMsg('showlivepreview'),
1965                                 'accesskey' => wfMsg('accesskey-preview'),
1966                                 'title'     => '',
1967                                 'onclick'   => $this->doLivePreviewScript(),
1968                         );
1969                         $buttons['live'] = wfElement('input', $temp, '');
1970                 } else {
1971                         $temp = array(
1972                                 'id'        => 'wpPreview',
1973                                 'name'      => 'wpPreview',
1974                                 'type'      => 'submit',
1975                                 'tabindex'  => $tabindex,
1976                                 'value'     => wfMsg('showpreview'),
1977                                 'accesskey' => wfMsg('accesskey-preview'),
1978                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
1979                         );
1980                         $buttons['preview'] = wfElement('input', $temp, '');
1981                         $buttons['live'] = '';
1982                 }
1983
1984                 $temp = array(
1985                         'id'        => 'wpDiff',
1986                         'name'      => 'wpDiff',
1987                         'type'      => 'submit',
1988                         'tabindex'  => ++$tabindex,
1989                         'value'     => wfMsg('showdiff'),
1990                         'accesskey' => wfMsg('accesskey-diff'),
1991                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
1992                 );
1993                 $buttons['diff'] = wfElement('input', $temp, '');
1994
1995                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons ) );
1996                 return $buttons;
1997         }
1998
1999         /**
2000          * Output preview text only. This can be sucked into the edit page
2001          * via JavaScript, and saves the server time rendering the skin as
2002          * well as theoretically being more robust on the client (doesn't
2003          * disturb the edit box's undo history, won't eat your text on
2004          * failure, etc).
2005          *
2006          * @todo This doesn't include category or interlanguage links.
2007          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2008          *       or something...</s> that might also require more skin
2009          *       initialization, so check whether that's a problem.
2010          */
2011         function livePreview() {
2012                 global $wgOut;
2013                 $wgOut->disable();
2014                 header( 'Content-type: text/xml; charset=utf-8' );
2015                 header( 'Cache-control: no-cache' );
2016
2017                 $previewText = $this->getPreviewText();
2018                 #$categories = $skin->getCategoryLinks();
2019
2020                 $s =
2021                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2022                 Xml::tags( 'livepreview', null,
2023                         Xml::element( 'preview', null, $previewText )
2024                         #.      Xml::element( 'category', null, $categories )
2025                 );
2026                 echo $s;
2027         }
2028
2029
2030         /**
2031          * Get a diff between the current contents of the edit box and the
2032          * version of the page we're editing from.
2033          *
2034          * If this is a section edit, we'll replace the section as for final
2035          * save and then make a comparison.
2036          */
2037         function showDiff() {
2038                 $oldtext = $this->mArticle->fetchContent();
2039                 $newtext = $this->mArticle->replaceSection(
2040                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2041                 $newtext = $this->mArticle->preSaveTransform( $newtext );
2042                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
2043                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
2044                 if ( $oldtext !== false  || $newtext != '' ) {
2045                         $de = new DifferenceEngine( $this->mTitle );
2046                         $de->setText( $oldtext, $newtext );
2047                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2048                         $de->showDiffStyle();
2049                 } else {
2050                         $difftext = '';
2051                 }
2052
2053                 global $wgOut;
2054                 $wgOut->addHtml( '<div id="wikiDiff">' . $difftext . '</div>' );
2055         }
2056
2057         /**
2058          * Filter an input field through a Unicode de-armoring process if it
2059          * came from an old browser with known broken Unicode editing issues.
2060          *
2061          * @param WebRequest $request
2062          * @param string $field
2063          * @return string
2064          * @private
2065          */
2066         function safeUnicodeInput( $request, $field ) {
2067                 $text = rtrim( $request->getText( $field ) );
2068                 return $request->getBool( 'safemode' )
2069                         ? $this->unmakesafe( $text )
2070                         : $text;
2071         }
2072
2073         /**
2074          * Filter an output field through a Unicode armoring process if it is
2075          * going to an old browser with known broken Unicode editing issues.
2076          *
2077          * @param string $text
2078          * @return string
2079          * @private
2080          */
2081         function safeUnicodeOutput( $text ) {
2082                 global $wgContLang;
2083                 $codedText = $wgContLang->recodeForEdit( $text );
2084                 return $this->checkUnicodeCompliantBrowser()
2085                         ? $codedText
2086                         : $this->makesafe( $codedText );
2087         }
2088
2089         /**
2090          * A number of web browsers are known to corrupt non-ASCII characters
2091          * in a UTF-8 text editing environment. To protect against this,
2092          * detected browsers will be served an armored version of the text,
2093          * with non-ASCII chars converted to numeric HTML character references.
2094          *
2095          * Preexisting such character references will have a 0 added to them
2096          * to ensure that round-trips do not alter the original data.
2097          *
2098          * @param string $invalue
2099          * @return string
2100          * @private
2101          */
2102         function makesafe( $invalue ) {
2103                 // Armor existing references for reversability.
2104                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2105
2106                 $bytesleft = 0;
2107                 $result = "";
2108                 $working = 0;
2109                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2110                         $bytevalue = ord( $invalue{$i} );
2111                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
2112                                 $result .= chr( $bytevalue );
2113                                 $bytesleft = 0;
2114                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
2115                                 $working = $working << 6;
2116                                 $working += ($bytevalue & 0x3F);
2117                                 $bytesleft--;
2118                                 if( $bytesleft <= 0 ) {
2119                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2120                                 }
2121                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
2122                                 $working = $bytevalue & 0x1F;
2123                                 $bytesleft = 1;
2124                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
2125                                 $working = $bytevalue & 0x0F;
2126                                 $bytesleft = 2;
2127                         } else { //1111 0xxx
2128                                 $working = $bytevalue & 0x07;
2129                                 $bytesleft = 3;
2130                         }
2131                 }
2132                 return $result;
2133         }
2134
2135         /**
2136          * Reverse the previously applied transliteration of non-ASCII characters
2137          * back to UTF-8. Used to protect data from corruption by broken web browsers
2138          * as listed in $wgBrowserBlackList.
2139          *
2140          * @param string $invalue
2141          * @return string
2142          * @private
2143          */
2144         function unmakesafe( $invalue ) {
2145                 $result = "";
2146                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2147                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2148                                 $i += 3;
2149                                 $hexstring = "";
2150                                 do {
2151                                         $hexstring .= $invalue{$i};
2152                                         $i++;
2153                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2154
2155                                 // Do some sanity checks. These aren't needed for reversability,
2156                                 // but should help keep the breakage down if the editor
2157                                 // breaks one of the entities whilst editing.
2158                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
2159                                         $codepoint = hexdec($hexstring);
2160                                         $result .= codepointToUtf8( $codepoint );
2161                                 } else {
2162                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2163                                 }
2164                         } else {
2165                                 $result .= substr( $invalue, $i, 1 );
2166                         }
2167                 }
2168                 // reverse the transform that we made for reversability reasons.
2169                 return strtr( $result, array( "&#x0" => "&#x" ) );
2170         }
2171
2172         function noCreatePermission() {
2173                 global $wgOut;
2174                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2175                 $wgOut->addWikiMsg( 'nocreatetext' );
2176         }
2177
2178         /**
2179          * If there are rows in the deletion log for this page, show them,
2180          * along with a nice little note for the user
2181          *
2182          * @param OutputPage $out
2183          */
2184         private function showDeletionLog( $out ) {
2185                 $title = $this->mTitle;
2186                 $reader = new LogReader(
2187                         new FauxRequest(
2188                                 array(
2189                                         'page' => $title->getPrefixedText(),
2190                                         'type' => 'delete',
2191                                         )
2192                         )
2193                 );
2194                 if( $reader->hasRows() ) {
2195                         $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
2196                         $out->addWikiMsg( 'recreate-deleted-warn' );
2197                         $viewer = new LogViewer( $reader );
2198                         $viewer->showList( $out );
2199                         $out->addHtml( '</div>' );
2200                 }
2201         }
2202
2203         /**
2204          * Attempt submission
2205          * @return bool false if output is done, true if the rest of the form should be displayed
2206          */
2207         function attemptSave() {
2208                 global $wgUser, $wgOut, $wgTitle, $wgRequest;
2209
2210                 $resultDetails = false;
2211                 $value = $this->internalAttemptSave( $resultDetails, $wgUser->isAllowed('bot') && $wgRequest->getBool('bot', true) );
2212
2213                 if( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
2214                         $this->didSave = true;
2215                 }
2216
2217                 switch ($value) {
2218                         case self::AS_HOOK_ERROR_EXPECTED:
2219                         case self::AS_CONTENT_TOO_BIG:
2220                         case self::AS_ARTICLE_WAS_DELETED:
2221                         case self::AS_CONFLICT_DETECTED:
2222                         case self::AS_SUMMARY_NEEDED:
2223                         case self::AS_TEXTBOX_EMPTY:
2224                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
2225                         case self::AS_END:
2226                                 return true;
2227
2228                         case self::AS_HOOK_ERROR:
2229                         case self::AS_FILTERING:
2230                         case self::AS_SUCCESS_NEW_ARTICLE:
2231                         case self::AS_SUCCESS_UPDATE:
2232                                 return false;
2233
2234                         case self::AS_SPAM_ERROR:
2235                                 $this->spamPage ( $resultDetails['spam'] );
2236                                 return false;
2237
2238                         case self::AS_BLOCKED_PAGE_FOR_USER:
2239                                 $this->blockedPage();
2240                                 return false;
2241
2242                         case self::AS_IMAGE_REDIRECT_ANON:
2243                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
2244                                 return false;
2245
2246                         case self::AS_READ_ONLY_PAGE_ANON:
2247                                 $this->userNotLoggedInPage();
2248                                 return false;
2249
2250                         case self::AS_READ_ONLY_PAGE_LOGGED:
2251                         case self::AS_READ_ONLY_PAGE:
2252                                 $wgOut->readOnlyPage();
2253                                 return false;
2254
2255                         case self::AS_RATE_LIMITED:
2256                                 $wgOut->rateLimited();
2257                                 return false;
2258
2259                         case self::AS_NO_CREATE_PERMISSION;
2260                                 $this->noCreatePermission();
2261                                 return;
2262
2263                         case self::AS_BLANK_ARTICLE:
2264                                 $wgOut->redirect( $wgTitle->getFullURL() );
2265                                 return false;
2266
2267                         case self::AS_IMAGE_REDIRECT_LOGGED:
2268                                 $wgOut->permissionRequired( 'upload' );
2269                                 return false;
2270                 }
2271         }
2272 }