includes/EditPage.php

   1 <?php
   2 /**
   3  * Contains the EditPage class
   4  * @file
   5  */
   6
   7 /**
   8  * The edit page/HTML interface (split from Article)
   9  * The actual database and text munging is still in Article,
  10  * but it should get easier to call those from alternate
  11  * interfaces.
  12  *
  13  * EditPage cares about two distinct titles:
  14  * $this->mContextTitle is the page that forms submit to, links point to,
  15  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  16  * page in the database that is actually being edited. These are
  17  * usually the same, but they are now allowed to be different.
  18  */
  19 class EditPage {
  20         const AS_SUCCESS_UPDATE            = 200;
  21         const AS_SUCCESS_NEW_ARTICLE       = 201;
  22         const AS_HOOK_ERROR                = 210;
  23         const AS_FILTERING                 = 211;
  24         const AS_HOOK_ERROR_EXPECTED       = 212;
  25         const AS_BLOCKED_PAGE_FOR_USER     = 215;
  26         const AS_CONTENT_TOO_BIG           = 216;
  27         const AS_USER_CANNOT_EDIT          = 217;
  28         const AS_READ_ONLY_PAGE_ANON       = 218;
  29         const AS_READ_ONLY_PAGE_LOGGED     = 219;
  30         const AS_READ_ONLY_PAGE            = 220;
  31         const AS_RATE_LIMITED              = 221;
  32         const AS_ARTICLE_WAS_DELETED       = 222;
  33         const AS_NO_CREATE_PERMISSION      = 223;
  34         const AS_BLANK_ARTICLE             = 224;
  35         const AS_CONFLICT_DETECTED         = 225;
  36         const AS_SUMMARY_NEEDED            = 226;
  37         const AS_TEXTBOX_EMPTY             = 228;
  38         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
  39         const AS_OK                        = 230;
  40         const AS_END                       = 231;
  41         const AS_SPAM_ERROR                = 232;
  42         const AS_IMAGE_REDIRECT_ANON       = 233;
  43         const AS_IMAGE_REDIRECT_LOGGED     = 234;
  44
  45         /**
  46          * @var Article
  47          */
  48         var $mArticle;
  49
  50         /**
  51          * @var Title
  52          */
  53         var $mTitle;
  54         private $mContextTitle = null;
  55         var $action;
  56         var $isConflict = false;
  57         var $isCssJsSubpage = false;
  58         var $isCssSubpage = false;
  59         var $isJsSubpage = false;
  60         var $isNew = false; // new page or new section
  61         var $deletedSinceEdit;
  62         var $formtype;
  63         var $firsttime;
  64         var $lastDelete;
  65         var $mTokenOk = false;
  66         var $mTokenOkExceptSuffix = false;
  67         var $mTriedSave = false;
  68         var $incompleteForm = false;
  69         var $tooBig = false;
  70         var $kblength = false;
  71         var $missingComment = false;
  72         var $missingSummary = false;
  73         var $allowBlankSummary = false;
  74         var $autoSumm = '';
  75         var $hookError = '';
  76         #var $mPreviewTemplates;
  77
  78         /**
  79          * @var ParserOutput
  80          */
  81         var $mParserOutput;
  82
  83         var $mBaseRevision = false;
  84         var $mShowSummaryField = true;
  85
  86         # Form values
  87         var $save = false, $preview = false, $diff = false;
  88         var $minoredit = false, $watchthis = false, $recreate = false;
  89         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
  90         var $edittime = '', $section = '', $starttime = '';
  91         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
  92
  93         # Placeholders for text injection by hooks (must be HTML)
  94         # extensions should take care to _append_ to the present value
  95         public $editFormPageTop; // Before even the preview
  96         public $editFormTextTop;
  97         public $editFormTextBeforeContent;
  98         public $editFormTextAfterWarn;
  99         public $editFormTextAfterTools;
 100         public $editFormTextBottom;
 101         public $editFormTextAfterContent;
 102         public $previewTextAfterContent;
 103
 104         /* $didSave should be set to true whenever an article was succesfully altered. */
 105         public $didSave = false;
 106         public $undidRev = 0;
 107
 108         public $suppressIntro = false;
 109
 110         /**
 111          * @todo document
 112          * @param $article
 113          */
 114         function __construct( $article ) {
 115                 $this->mArticle =& $article;
 116                 $this->mTitle = $article->getTitle();
 117                 $this->action = 'submit';
 118
 119                 # Placeholders for text injection by hooks (empty per default)
 120                 $this->editFormPageTop =
 121                 $this->editFormTextTop =
 122                 $this->editFormTextBeforeContent =
 123                 $this->editFormTextAfterWarn =
 124                 $this->editFormTextAfterTools =
 125                 $this->editFormTextBottom =
 126                 $this->editFormTextAfterContent =
 127                 $this->previewTextAfterContent =
 128                 $this->mPreloadText = "";
 129         }
 130
 131         function getArticle() {
 132                 return $this->mArticle;
 133         }
 134
 135         /**
 136          * Set the context Title object
 137          *
 138          * @param $title Title object or null
 139          */
 140         public function setContextTitle( $title ) {
 141                 $this->mContextTitle = $title;
 142         }
 143
 144         /**
 145          * Get the context title object.
 146          * If not set, $wgTitle will be returned. This behavior might changed in
 147          * the future to return $this->mTitle instead.
 148          *
 149          * @return Title object
 150          */
 151         public function getContextTitle() {
 152                 if ( is_null( $this->mContextTitle ) ) {
 153                         global $wgTitle;
 154                         return $wgTitle;
 155                 } else {
 156                         return $this->mContextTitle;
 157                 }
 158         }
 159
 160         /**
 161          * Fetch initial editing page content.
 162          * @returns mixed string on success, $def_text for invalid sections
 163          * @private
 164          */
 165         function getContent( $def_text = '' ) {
 166                 global $wgOut, $wgRequest, $wgParser;
 167
 168                 wfProfileIn( __METHOD__ );
 169                 # Get variables from query string :P
 170                 $section = $wgRequest->getVal( 'section' );
 171
 172                 $preload = $wgRequest->getVal( 'preload',
 173                         // Custom preload text for new sections
 174                         $section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 175                 $undoafter = $wgRequest->getVal( 'undoafter' );
 176                 $undo = $wgRequest->getVal( 'undo' );
 177
 178                 // For message page not locally set, use the i18n message.
 179                 // For other non-existent articles, use preload text if any.
 180                 if ( !$this->mTitle->exists() ) {
 181                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 182                                 # If this is a system message, get the default text.
 183                                 $text = $this->mTitle->getDefaultMessageText();
 184                                 if( $text === false ) {
 185                                         $text = $this->getPreloadedText( $preload );
 186                                 }
 187                         } else {
 188                                 # If requested, preload some text.
 189                                 $text = $this->getPreloadedText( $preload );
 190                         }
 191                 // For existing pages, get text based on "undo" or section parameters.
 192                 } else {
 193                         $text = $this->mArticle->getContent();
 194                         if ( $undo > 0 && $undoafter > 0 && $undo < $undoafter ) {
 195                                 # If they got undoafter and undo round the wrong way, switch them
 196                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 197                         }
 198                         if ( $undo > 0 && $undo > $undoafter ) {
 199                                 # Undoing a specific edit overrides section editing; section-editing
 200                                 # doesn't work with undoing.
 201                                 if ( $undoafter ) {
 202                                         $undorev = Revision::newFromId( $undo );
 203                                         $oldrev = Revision::newFromId( $undoafter );
 204                                 } else {
 205                                         $undorev = Revision::newFromId( $undo );
 206                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 207                                 }
 208
 209                                 # Sanity check, make sure it's the right page,
 210                                 # the revisions exist and they were not deleted.
 211                                 # Otherwise, $text will be left as-is.
 212                                 if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 213                                         $undorev->getPage() == $oldrev->getPage() &&
 214                                         $undorev->getPage() == $this->mArticle->getID() &&
 215                                         !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 216                                         !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 217
 218                                         $undotext = $this->mArticle->getUndoText( $undorev, $oldrev );
 219                                         if ( $undotext === false ) {
 220                                                 # Warn the user that something went wrong
 221                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-failure">' . wfMsgNoTrans( 'undo-failure' ) . '</div>' );
 222                                         } else {
 223                                                 $text = $undotext;
 224                                                 # Inform the user of our success and set an automatic edit summary
 225                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="mw-undo-success">' . wfMsgNoTrans( 'undo-success' ) . '</div>' );
 226                                                 $firstrev = $oldrev->getNext();
 227                                                 # If we just undid one rev, use an autosummary
 228                                                 if ( $firstrev->mId == $undo ) {
 229                                                         $this->summary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 230                                                         $this->undidRev = $undo;
 231                                                 }
 232                                                 $this->formtype = 'diff';
 233                                         }
 234                                 } else {
 235                                         // Failed basic sanity checks.
 236                                         // Older revisions may have been removed since the link
 237                                         // was created, or we may simply have got bogus input.
 238                                         $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-norev">' . wfMsgNoTrans( 'undo-norev' ) . '</div>' );
 239                                 }
 240                         } else if ( $section != '' ) {
 241                                 if ( $section == 'new' ) {
 242                                         $text = $this->getPreloadedText( $preload );
 243                                 } else {
 244                                         // Get section edit text (returns $def_text for invalid sections)
 245                                         $text = $wgParser->getSection( $text, $section, $def_text );
 246                                 }
 247                         }
 248                 }
 249
 250                 wfProfileOut( __METHOD__ );
 251                 return $text;
 252         }
 253
 254         /** Use this method before edit() to preload some text into the edit box */
 255         public function setPreloadedText( $text ) {
 256                 $this->mPreloadText = $text;
 257         }
 258
 259         /**
 260          * Get the contents to be preloaded into the box, either set by
 261          * an earlier setPreloadText() or by loading the given page.
 262          *
 263          * @param $preload String: representing the title to preload from.
 264          * @return String
 265          */
 266         protected function getPreloadedText( $preload ) {
 267                 global $wgUser, $wgParser;
 268                 if ( !empty( $this->mPreloadText ) ) {
 269                         return $this->mPreloadText;
 270                 } elseif ( $preload !== '' ) {
 271                         $title = Title::newFromText( $preload );
 272                         # Check for existence to avoid getting MediaWiki:Noarticletext
 273                         if ( isset( $title ) && $title->exists() && $title->userCanRead() ) {
 274                                 $article = new Article( $title );
 275
 276                                 if ( $article->isRedirect() ) {
 277                                         $title = Title::newFromRedirectRecurse( $article->getContent() );
 278                                         # Redirects to missing titles are displayed, to hidden pages are followed
 279                                         # Copying observed behaviour from ?action=view
 280                                         if ( $title->exists() ) {
 281                                                 if ($title->userCanRead() ) {
 282                                                         $article = new Article( $title );
 283                                                 } else {
 284                                                         return "";
 285                                                 }
 286                                         }
 287                                 }
 288                                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 289                                 return $wgParser->getPreloadText( $article->getContent(), $title, $parserOptions );
 290                         }
 291                 }
 292                 return '';
 293         }
 294
 295         /**
 296          * Check if a page was deleted while the user was editing it, before submit.
 297          * Note that we rely on the logging table, which hasn't been always there,
 298          * but that doesn't matter, because this only applies to brand new
 299          * deletes.
 300          */
 301         protected function wasDeletedSinceLastEdit() {
 302                 if ( $this->deletedSinceEdit !== null ) {
 303                         return $this->deletedSinceEdit;
 304                 }
 305
 306                 $this->deletedSinceEdit = false;
 307
 308                 if ( $this->mTitle->isDeletedQuick() ) {
 309                         $this->lastDelete = $this->getLastDelete();
 310                         if ( $this->lastDelete ) {
 311                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
 312                                 if ( $deleteTime > $this->starttime ) {
 313                                         $this->deletedSinceEdit = true;
 314                                 }
 315                         }
 316                 }
 317
 318                 return $this->deletedSinceEdit;
 319         }
 320
 321         /**
 322          * Checks whether the user entered a skin name in uppercase,
 323          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 324          */
 325         protected function isWrongCaseCssJsPage() {
 326                 if( $this->mTitle->isCssJsSubpage() ) {
 327                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 328                         $skins = array_merge(
 329                                 array_keys( Skin::getSkinNames() ),
 330                                 array( 'common' )
 331                         );
 332                         return !in_array( $name, $skins )
 333                                 && in_array( strtolower( $name ), $skins );
 334                 } else {
 335                         return false;
 336                 }
 337         }
 338
 339         function submit() {
 340                 $this->edit();
 341         }
 342
 343         /**
 344          * This is the function that gets called for "action=edit". It
 345          * sets up various member variables, then passes execution to
 346          * another function, usually showEditForm()
 347          *
 348          * The edit form is self-submitting, so that when things like
 349          * preview and edit conflicts occur, we get the same form back
 350          * with the extra stuff added.  Only when the final submission
 351          * is made and all is well do we actually save and redirect to
 352          * the newly-edited page.
 353          */
 354         function edit() {
 355                 global $wgOut, $wgRequest, $wgUser;
 356                 // Allow extensions to modify/prevent this form or submission
 357                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 358                         return;
 359                 }
 360
 361                 wfProfileIn( __METHOD__ );
 362                 wfDebug( __METHOD__.": enter\n" );
 363
 364                 // This is not an article
 365                 $wgOut->setArticleFlag( false );
 366
 367                 $this->importFormData( $wgRequest );
 368                 $this->firsttime = false;
 369
 370                 if ( $this->live ) {
 371                         $this->livePreview();
 372                         wfProfileOut( __METHOD__ );
 373                         return;
 374                 }
 375
 376                 if ( wfReadOnly() && $this->save ) {
 377                         // Force preview
 378                         $this->save = false;
 379                         $this->preview = true;
 380                 }
 381
 382                 $wgOut->addModules( array( 'mediawiki.action.edit' ) );
 383
 384                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
 385                         $wgOut->addModules( 'mediawiki.legacy.preview' );
 386                 }
 387                 // Bug #19334: textarea jumps when editing articles in IE8
 388                 $wgOut->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
 389
 390                 $permErrors = $this->getEditPermissionErrors();
 391                 if ( $permErrors ) {
 392                         wfDebug( __METHOD__ . ": User can't edit\n" );
 393                         $content = $this->getContent( null );
 394                         $content = $content === '' ? null : $content;
 395                         $this->readOnlyPage( $content, true, $permErrors, 'edit' );
 396                         wfProfileOut( __METHOD__ );
 397                         return;
 398                 } else {
 399                         if ( $this->save ) {
 400                                 $this->formtype = 'save';
 401                         } else if ( $this->preview ) {
 402                                 $this->formtype = 'preview';
 403                         } else if ( $this->diff ) {
 404                                 $this->formtype = 'diff';
 405                         } else { # First time through
 406                                 $this->firsttime = true;
 407                                 if ( $this->previewOnOpen() ) {
 408                                         $this->formtype = 'preview';
 409                                 } else {
 410                                         $this->formtype = 'initial';
 411                                 }
 412                         }
 413                 }
 414
 415                 // If they used redlink=1 and the page exists, redirect to the main article
 416                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 417                         $wgOut->redirect( $this->mTitle->getFullURL() );
 418                 }
 419
 420                 wfProfileIn( __METHOD__."-business-end" );
 421
 422                 $this->isConflict = false;
 423                 // css / js subpages of user pages get a special treatment
 424                 $this->isCssJsSubpage       = $this->mTitle->isCssJsSubpage();
 425                 $this->isCssSubpage         = $this->mTitle->isCssSubpage();
 426                 $this->isJsSubpage          = $this->mTitle->isJsSubpage();
 427                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 428                 $this->isNew                = !$this->mTitle->exists() || $this->section == 'new';
 429
 430                 # Show applicable editing introductions
 431                 if ( $this->formtype == 'initial' || $this->firsttime )
 432                         $this->showIntro();
 433
 434                 if ( $this->mTitle->isTalkPage() ) {
 435                         $wgOut->addWikiMsg( 'talkpagetext' );
 436                 }
 437
 438                 # Optional notices on a per-namespace and per-page basis
 439                 $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
 440                 $editnotice_ns_message = wfMessage( $editnotice_ns )->inContentLanguage();
 441                 if ( $editnotice_ns_message->exists() ) {
 442                         $wgOut->addWikiText( $editnotice_ns_message->plain() );
 443                 }
 444                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
 445                         $parts = explode( '/', $this->mTitle->getDBkey() );
 446                         $editnotice_base = $editnotice_ns;
 447                         while ( count( $parts ) > 0 ) {
 448                                 $editnotice_base .= '-'.array_shift( $parts );
 449                                 $editnotice_base_msg = wfMessage( $editnotice_base )->inContentLanguage();
 450                                 if ( $editnotice_base_msg->exists() ) {
 451                                         $wgOut->addWikiText( $editnotice_base_msg->plain()  );
 452                                 }
 453                         }
 454                 }
 455
 456                 # Attempt submission here.  This will check for edit conflicts,
 457                 # and redundantly check for locked database, blocked IPs, etc.
 458                 # that edit() already checked just in case someone tries to sneak
 459                 # in the back door with a hand-edited submission URL.
 460
 461                 if ( 'save' == $this->formtype ) {
 462                         if ( !$this->attemptSave() ) {
 463                                 wfProfileOut( __METHOD__."-business-end" );
 464                                 wfProfileOut( __METHOD__ );
 465                                 return;
 466                         }
 467                 }
 468
 469                 # First time through: get contents, set time for conflict
 470                 # checking, etc.
 471                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 472                         if ( $this->initialiseForm() === false ) {
 473                                 $this->noSuchSectionPage();
 474                                 wfProfileOut( __METHOD__."-business-end" );
 475                                 wfProfileOut( __METHOD__ );
 476                                 return;
 477                         }
 478                         if ( !$this->mTitle->getArticleId() )
 479                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 480                         else
 481                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 482                 }
 483
 484                 $this->showEditForm();
 485                 wfProfileOut( __METHOD__."-business-end" );
 486                 wfProfileOut( __METHOD__ );
 487         }
 488
 489         protected function getEditPermissionErrors() {
 490                 global $wgUser;
 491                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 492                 # Can this title be created?
 493                 if ( !$this->mTitle->exists() ) {
 494                         $permErrors = array_merge( $permErrors,
 495                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 496                 }
 497                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 498                 $remove = array();
 499                 foreach( $permErrors as $error ) {
 500                         if ( ( $this->preview || $this->diff ) &&
 501                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 502                         {
 503                                 $remove[] = $error;
 504                         }
 505                 }
 506                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 507                 return $permErrors;
 508         }
 509
 510         /**
 511          * Show a read-only error
 512          * Parameters are the same as OutputPage:readOnlyPage()
 513          * Redirect to the article page if redlink=1
 514          */
 515         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 516                 global $wgRequest, $wgOut;
 517                 if ( $wgRequest->getBool( 'redlink' ) ) {
 518                         // The edit page was reached via a red link.
 519                         // Redirect to the article page and let them click the edit tab if
 520                         // they really want a permission error.
 521                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 522                 } else {
 523                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 524                 }
 525         }
 526
 527         /**
 528          * Should we show a preview when the edit form is first shown?
 529          *
 530          * @return bool
 531          */
 532         protected function previewOnOpen() {
 533                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 534                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 535                         // Explicit override from request
 536                         return true;
 537                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 538                         // Explicit override from request
 539                         return false;
 540                 } elseif ( $this->section == 'new' ) {
 541                         // Nothing *to* preview for new sections
 542                         return false;
 543                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 544                         // Standard preference behaviour
 545                         return true;
 546                 } elseif ( !$this->mTitle->exists() &&
 547                   isset($wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()]) &&
 548                   $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 549                 {
 550                         // Categories are special
 551                         return true;
 552                 } else {
 553                         return false;
 554                 }
 555         }
 556
 557         /**
 558          * Does this EditPage class support section editing?
 559          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 560          *
 561          * @return bool
 562          */
 563         protected function isSectionEditSupported() {
 564                 return true;
 565         }
 566
 567         /**
 568          * Returns the URL to use in the form's action attribute.
 569          * This is used by EditPage subclasses when simply customizing the action
 570          * variable in the constructor is not enough. This can be used when the
 571          * EditPage lives inside of a Special page rather than a custom page action.
 572          *
 573          * @param $title Title object for which is being edited (where we go to for &action= links)
 574          * @return string
 575          */
 576         protected function getActionURL( Title $title ) {
 577                 return $title->getLocalURL( array( 'action' => $this->action ) );
 578         }
 579
 580         /**
 581          * @todo document
 582          * @param $request
 583          */
 584         function importFormData( &$request ) {
 585                 global $wgLang, $wgUser;
 586
 587                 wfProfileIn( __METHOD__ );
 588
 589                 # Section edit can come from either the form or a link
 590                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 591
 592                 if ( $request->wasPosted() ) {
 593                         # These fields need to be checked for encoding.
 594                         # Also remove trailing whitespace, but don't remove _initial_
 595                         # whitespace from the text boxes. This may be significant formatting.
 596                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 597                         if ( !$request->getCheck('wpTextbox2') ) {
 598                                 // Skip this if wpTextbox2 has input, it indicates that we came
 599                                 // from a conflict page with raw page text, not a custom form
 600                                 // modified by subclasses
 601                                 wfProfileIn( get_class($this)."::importContentFormData" );
 602                                 $textbox1 = $this->importContentFormData( $request );
 603                                 if ( isset($textbox1) )
 604                                         $this->textbox1 = $textbox1;
 605                                 wfProfileOut( get_class($this)."::importContentFormData" );
 606                         }
 607
 608                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 609                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250 );
 610
 611                         # Remove extra headings from summaries and new sections.
 612                         $this->summary = preg_replace('/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary);
 613
 614                         $this->edittime = $request->getVal( 'wpEdittime' );
 615                         $this->starttime = $request->getVal( 'wpStarttime' );
 616
 617                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 618
 619                         if ($this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null) {
 620                                 // wpTextbox1 field is missing, possibly due to being "too big"
 621                                 // according to some filter rules such as Suhosin's setting for
 622                                 // suhosin.request.max_value_length (d'oh)
 623                                 $this->incompleteForm = true;
 624                         } else {
 625                                 // edittime should be one of our last fields; if it's missing,
 626                                 // the submission probably broke somewhere in the middle.
 627                                 $this->incompleteForm = is_null( $this->edittime );
 628                         }
 629                         if ( $this->incompleteForm ) {
 630                                 # If the form is incomplete, force to preview.
 631                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 632                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 633                                 $this->preview = true;
 634                         } else {
 635                                 /* Fallback for live preview */
 636                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 637                                 $this->diff = $request->getCheck( 'wpDiff' );
 638
 639                                 // Remember whether a save was requested, so we can indicate
 640                                 // if we forced preview due to session failure.
 641                                 $this->mTriedSave = !$this->preview;
 642
 643                                 if ( $this->tokenOk( $request ) ) {
 644                                         # Some browsers will not report any submit button
 645                                         # if the user hits enter in the comment box.
 646                                         # The unmarked state will be assumed to be a save,
 647                                         # if the form seems otherwise complete.
 648                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 649                                 } else if ( $this->diff ) {
 650                                         # Failed token check, but only requested "Show Changes".
 651                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 652                                 } else {
 653                                         # Page might be a hack attempt posted from
 654                                         # an external site. Preview instead of saving.
 655                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 656                                         $this->preview = true;
 657                                 }
 658                         }
 659                         $this->save = !$this->preview && !$this->diff;
 660                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 661                                 $this->edittime = null;
 662                         }
 663
 664                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 665                                 $this->starttime = null;
 666                         }
 667
 668                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 669
 670                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 671                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 672
 673                         # Don't force edit summaries when a user is editing their own user or talk page
 674                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 675                                 $this->mTitle->getText() == $wgUser->getName() )
 676                         {
 677                                 $this->allowBlankSummary = true;
 678                         } else {
 679                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
 680                         }
 681
 682                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 683                 } else {
 684                         # Not a posted form? Start with nothing.
 685                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 686                         $this->textbox1  = '';
 687                         $this->summary   = '';
 688                         $this->edittime  = '';
 689                         $this->starttime = wfTimestampNow();
 690                         $this->edit      = false;
 691                         $this->preview   = false;
 692                         $this->save      = false;
 693                         $this->diff      = false;
 694                         $this->minoredit = false;
 695                         $this->watchthis = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 696                         $this->recreate  = false;
 697
 698                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 699                                 $this->summary = $request->getVal( 'preloadtitle' );
 700                         }
 701                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 702                                 $this->summary = $request->getText( 'summary' );
 703                         }
 704
 705                         if ( $request->getVal( 'minor' ) ) {
 706                                 $this->minoredit = true;
 707                         }
 708                 }
 709
 710                 $this->bot = $request->getBool( 'bot', true );
 711                 $this->nosummary = $request->getBool( 'nosummary' );
 712
 713                 // @todo FIXME: Unused variable?
 714                 $this->oldid = $request->getInt( 'oldid' );
 715
 716                 $this->live = $request->getCheck( 'live' );
 717                 $this->editintro = $request->getText( 'editintro',
 718                         // Custom edit intro for new sections
 719                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 720
 721                 // Allow extensions to modify form data
 722                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 723
 724                 wfProfileOut( __METHOD__ );
 725         }
 726
 727         /**
 728          * Subpage overridable method for extracting the page content data from the
 729          * posted form to be placed in $this->textbox1, if using customized input
 730          * this method should be overrided and return the page text that will be used
 731          * for saving, preview parsing and so on...
 732          *
 733          * @param $request WebRequest
 734          */
 735         protected function importContentFormData( &$request ) {
 736                 return; // Don't do anything, EditPage already extracted wpTextbox1
 737         }
 738
 739         /**
 740          * Make sure the form isn't faking a user's credentials.
 741          *
 742          * @param $request WebRequest
 743          * @return bool
 744          * @private
 745          */
 746         function tokenOk( &$request ) {
 747                 global $wgUser;
 748                 $token = $request->getVal( 'wpEditToken' );
 749                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 750                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 751                 return $this->mTokenOk;
 752         }
 753
 754         /**
 755          * Show all applicable editing introductions
 756          */
 757         protected function showIntro() {
 758                 global $wgOut, $wgUser;
 759                 if ( $this->suppressIntro ) {
 760                         return;
 761                 }
 762
 763                 $namespace = $this->mTitle->getNamespace();
 764
 765                 if ( $namespace == NS_MEDIAWIKI ) {
 766                         # Show a warning if editing an interface message
 767                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
 768                 }
 769
 770                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
 771                 # Show log extract when the user is currently blocked
 772                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
 773                         $parts = explode( '/', $this->mTitle->getText(), 2 );
 774                         $username = $parts[0];
 775                         $user = User::newFromName( $username, false /* allow IP users*/ );
 776                         $ip = User::isIP( $username );
 777                         if ( !$user->isLoggedIn() && !$ip ) { # User does not exist
 778                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
 779                                         array( 'userpage-userdoesnotexist', $username ) );
 780                         } else if ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
 781                                 LogEventsList::showLogExtract(
 782                                         $wgOut,
 783                                         'block',
 784                                         $user->getUserPage()->getPrefixedText(),
 785                                         '',
 786                                         array(
 787                                                 'lim' => 1,
 788                                                 'showIfEmpty' => false,
 789                                                 'msgKey' => array(
 790                                                         'blocked-notice-logextract',
 791                                                         $user->getName() # Support GENDER in notice
 792                                                 )
 793                                         )
 794                                 );
 795                         }
 796                 }
 797                 # Try to add a custom edit intro, or use the standard one if this is not possible.
 798                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 799                         if ( $wgUser->isLoggedIn() ) {
 800                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
 801                         } else {
 802                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
 803                         }
 804                 }
 805                 # Give a notice if the user is editing a deleted/moved page...
 806                 if ( !$this->mTitle->exists() ) {
 807                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle->getPrefixedText(),
 808                                 '', array( 'lim' => 10,
 809                                            'conds' => array( "log_action != 'revision'" ),
 810                                            'showIfEmpty' => false,
 811                                            'msgKey' => array( 'recreate-moveddeleted-warn') )
 812                         );
 813                 }
 814         }
 815
 816         /**
 817          * Attempt to show a custom editing introduction, if supplied
 818          *
 819          * @return bool
 820          */
 821         protected function showCustomIntro() {
 822                 if ( $this->editintro ) {
 823                         $title = Title::newFromText( $this->editintro );
 824                         if ( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 825                                 global $wgOut;
 826                                 // Added using template syntax, to take <noinclude>'s into account.
 827                                 $wgOut->addWikiTextTitleTidy( '{{:' . $title->getFullText() . '}}', $this->mTitle );
 828                                 return true;
 829                         } else {
 830                                 return false;
 831                         }
 832                 } else {
 833                         return false;
 834                 }
 835         }
 836
 837         /**
 838          * Attempt submission (no UI)
 839          * @return one of the constants describing the result
 840          */
 841         function internalAttemptSave( &$result, $bot = false ) {
 842                 global $wgFilterCallback, $wgUser, $wgParser;
 843                 global $wgMaxArticleSize;
 844
 845                 wfProfileIn( __METHOD__  );
 846                 wfProfileIn( __METHOD__ . '-checks' );
 847
 848                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
 849                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
 850                         wfProfileOut( __METHOD__ . '-checks' );
 851                         wfProfileOut( __METHOD__  );
 852                         return self::AS_HOOK_ERROR;
 853                 }
 854
 855                 # Check image redirect
 856                 if ( $this->mTitle->getNamespace() == NS_FILE &&
 857                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 858                         !$wgUser->isAllowed( 'upload' ) ) {
 859                                 $isAnon = $wgUser->isAnon();
 860
 861                                 wfProfileOut( __METHOD__ . '-checks' );
 862                                 wfProfileOut( __METHOD__  );
 863
 864                                 return $isAnon ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
 865                 }
 866
 867                 # Check for spam
 868                 $match = self::matchSummarySpamRegex( $this->summary );
 869                 if ( $match === false ) {
 870                         $match = self::matchSpamRegex( $this->textbox1 );
 871                 }
 872                 if ( $match !== false ) {
 873                         $result['spam'] = $match;
 874                         $ip = wfGetIP();
 875                         $pdbk = $this->mTitle->getPrefixedDBkey();
 876                         $match = str_replace( "\n", '', $match );
 877                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
 878                         wfProfileOut( __METHOD__ . '-checks' );
 879                         wfProfileOut( __METHOD__ );
 880                         return self::AS_SPAM_ERROR;
 881                 }
 882                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
 883                         # Error messages or other handling should be performed by the filter function
 884                         wfProfileOut( __METHOD__ . '-checks' );
 885                         wfProfileOut( __METHOD__ );
 886                         return self::AS_FILTERING;
 887                 }
 888                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
 889                         # Error messages etc. could be handled within the hook...
 890                         wfProfileOut( __METHOD__ . '-checks' );
 891                         wfProfileOut( __METHOD__ );
 892                         return self::AS_HOOK_ERROR;
 893                 } elseif ( $this->hookError != '' ) {
 894                         # ...or the hook could be expecting us to produce an error
 895                         wfProfileOut( __METHOD__ . '-checks' );
 896                         wfProfileOut( __METHOD__ );
 897                         return self::AS_HOOK_ERROR_EXPECTED;
 898                 }
 899                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 900                         # Check block state against master, thus 'false'.
 901                         wfProfileOut( __METHOD__ . '-checks' );
 902                         wfProfileOut( __METHOD__ );
 903                         return self::AS_BLOCKED_PAGE_FOR_USER;
 904                 }
 905                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
 906                 if ( $this->kblength > $wgMaxArticleSize ) {
 907                         // Error will be displayed by showEditForm()
 908                         $this->tooBig = true;
 909                         wfProfileOut( __METHOD__ . '-checks' );
 910                         wfProfileOut( __METHOD__ );
 911                         return self::AS_CONTENT_TOO_BIG;
 912                 }
 913
 914                 if ( !$wgUser->isAllowed( 'edit' ) ) {
 915                         if ( $wgUser->isAnon() ) {
 916                                 wfProfileOut( __METHOD__ . '-checks' );
 917                                 wfProfileOut( __METHOD__ );
 918                                 return self::AS_READ_ONLY_PAGE_ANON;
 919                         } else {
 920                                 wfProfileOut( __METHOD__ . '-checks' );
 921                                 wfProfileOut( __METHOD__ );
 922                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 923                         }
 924                 }
 925
 926                 if ( wfReadOnly() ) {
 927                         wfProfileOut( __METHOD__ . '-checks' );
 928                         wfProfileOut( __METHOD__ );
 929                         return self::AS_READ_ONLY_PAGE;
 930                 }
 931                 if ( $wgUser->pingLimiter() ) {
 932                         wfProfileOut( __METHOD__ . '-checks' );
 933                         wfProfileOut( __METHOD__ );
 934                         return self::AS_RATE_LIMITED;
 935                 }
 936
 937                 # If the article has been deleted while editing, don't save it without
 938                 # confirmation
 939                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
 940                         wfProfileOut( __METHOD__ . '-checks' );
 941                         wfProfileOut( __METHOD__ );
 942                         return self::AS_ARTICLE_WAS_DELETED;
 943                 }
 944
 945                 wfProfileOut( __METHOD__ . '-checks' );
 946
 947                 # If article is new, insert it.
 948                 $aid = $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
 949                 $new = ( $aid == 0 );
 950
 951                 if ( $new ) {
 952                         // Late check for create permission, just in case *PARANOIA*
 953                         if ( !$this->mTitle->userCan( 'create' ) ) {
 954                                 wfDebug( __METHOD__ . ": no create permission\n" );
 955                                 wfProfileOut( __METHOD__ );
 956                                 return self::AS_NO_CREATE_PERMISSION;
 957                         }
 958
 959                         # Don't save a new article if it's blank.
 960                         if ( $this->textbox1 == '' ) {
 961                                 wfProfileOut( __METHOD__ );
 962                                 return self::AS_BLANK_ARTICLE;
 963                         }
 964
 965                         // Run post-section-merge edit filter
 966                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
 967                                 # Error messages etc. could be handled within the hook...
 968                                 wfProfileOut( __METHOD__ );
 969                                 return self::AS_HOOK_ERROR;
 970                         } elseif ( $this->hookError != '' ) {
 971                                 # ...or the hook could be expecting us to produce an error
 972                                 wfProfileOut( __METHOD__ );
 973                                 return self::AS_HOOK_ERROR_EXPECTED;
 974                         }
 975
 976                         # Handle the user preference to force summaries here. Check if it's not a redirect.
 977                         if ( !$this->allowBlankSummary && !Title::newFromRedirect( $this->textbox1 ) ) {
 978                                 if ( md5( $this->summary ) == $this->autoSumm ) {
 979                                         $this->missingSummary = true;
 980                                         wfProfileOut( __METHOD__ );
 981                                         return self::AS_SUMMARY_NEEDED;
 982                                 }
 983                         }
 984
 985                         $text = $this->textbox1;
 986                         if ( $this->section == 'new' && $this->summary != '' ) {
 987                                 $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $text;
 988                         }
 989
 990                         $retval = self::AS_SUCCESS_NEW_ARTICLE;
 991
 992                 } else {
 993
 994                         # Article exists. Check for edit conflict.
 995
 996                         $this->mArticle->clear(); # Force reload of dates, etc.
 997
 998                         wfDebug( "timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n" );
 999
1000                         if ( $this->mArticle->getTimestamp() != $this->edittime ) {
1001                                 $this->isConflict = true;
1002                                 if ( $this->section == 'new' ) {
1003                                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1004                                                 $this->mArticle->getComment() == $this->summary ) {
1005                                                 // Probably a duplicate submission of a new comment.
1006                                                 // This can happen when squid resends a request after
1007                                                 // a timeout but the first one actually went through.
1008                                                 wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
1009                                         } else {
1010                                                 // New comment; suppress conflict.
1011                                                 $this->isConflict = false;
1012                                                 wfDebug( __METHOD__ .": conflict suppressed; new section\n" );
1013                                         }
1014                                 }
1015                         }
1016                         $userid = $wgUser->getId();
1017
1018                         # Suppress edit conflict with self, except for section edits where merging is required.
1019                         if ( $this->isConflict && $this->section == '' && $this->userWasLastToEdit( $userid, $this->edittime ) ) {
1020                                 wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1021                                 $this->isConflict = false;
1022                         }
1023
1024                         if ( $this->isConflict ) {
1025                                 wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
1026                                         $this->mArticle->getTimestamp() . "')\n" );
1027                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime );
1028                         } else {
1029                                 wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
1030                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary );
1031                         }
1032                         if ( is_null( $text ) ) {
1033                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1034                                 $this->isConflict = true;
1035                                 $text = $this->textbox1; // do not try to merge here!
1036                         } else if ( $this->isConflict ) {
1037                                 # Attempt merge
1038                                 if ( $this->mergeChangesInto( $text ) ) {
1039                                         // Successful merge! Maybe we should tell the user the good news?
1040                                         $this->isConflict = false;
1041                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1042                                 } else {
1043                                         $this->section = '';
1044                                         $this->textbox1 = $text;
1045                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1046                                 }
1047                         }
1048
1049                         if ( $this->isConflict ) {
1050                                 wfProfileOut( __METHOD__ );
1051                                 return self::AS_CONFLICT_DETECTED;
1052                         }
1053
1054                         $oldtext = $this->mArticle->getContent();
1055
1056                         // Run post-section-merge edit filter
1057                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
1058                                 # Error messages etc. could be handled within the hook...
1059                                 wfProfileOut( __METHOD__ );
1060                                 return self::AS_HOOK_ERROR;
1061                         } elseif ( $this->hookError != '' ) {
1062                                 # ...or the hook could be expecting us to produce an error
1063                                 wfProfileOut( __METHOD__ );
1064                                 return self::AS_HOOK_ERROR_EXPECTED;
1065                         }
1066
1067                         # Handle the user preference to force summaries here, but not for null edits
1068                         if ( $this->section != 'new' && !$this->allowBlankSummary && 0 != strcmp( $oldtext, $text )
1069                                 && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
1070                         {
1071                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1072                                         $this->missingSummary = true;
1073                                         wfProfileOut( __METHOD__ );
1074                                         return self::AS_SUMMARY_NEEDED;
1075                                 }
1076                         }
1077
1078                         # And a similar thing for new sections
1079                         if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1080                                 if ( trim( $this->summary ) == '' ) {
1081                                         $this->missingSummary = true;
1082                                         wfProfileOut( __METHOD__ );
1083                                         return self::AS_SUMMARY_NEEDED;
1084                                 }
1085                         }
1086
1087                         # All's well
1088                         wfProfileIn( __METHOD__ . '-sectionanchor' );
1089                         $sectionanchor = '';
1090                         if ( $this->section == 'new' ) {
1091                                 if ( $this->textbox1 == '' ) {
1092                                         $this->missingComment = true;
1093                                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1094                                         wfProfileOut( __METHOD__ );
1095                                         return self::AS_TEXTBOX_EMPTY;
1096                                 }
1097                                 if ( $this->summary != '' ) {
1098                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1099                                         # This is a new section, so create a link to the new section
1100                                         # in the revision summary.
1101                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1102                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1103                                 }
1104                         } elseif ( $this->section != '' ) {
1105                                 # Try to get a section anchor from the section source, redirect to edited section if header found
1106                                 # XXX: might be better to integrate this into Article::replaceSection
1107                                 # for duplicate heading checking and maybe parsing
1108                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1109                                 # we can't deal with anchors, includes, html etc in the header for now,
1110                                 # headline would need to be parsed to improve this
1111                                 if ( $hasmatch and strlen( $matches[2] ) > 0 ) {
1112                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1113                                 }
1114                         }
1115                         $result['sectionanchor'] = $sectionanchor;
1116                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1117
1118                         // Save errors may fall down to the edit form, but we've now
1119                         // merged the section into full text. Clear the section field
1120                         // so that later submission of conflict forms won't try to
1121                         // replace that into a duplicated mess.
1122                         $this->textbox1 = $text;
1123                         $this->section = '';
1124
1125                         $retval = self::AS_SUCCESS_UPDATE;
1126                 }
1127
1128                 // Check for length errors again now that the section is merged in
1129                 $this->kblength = (int)( strlen( $text ) / 1024 );
1130                 if ( $this->kblength > $wgMaxArticleSize ) {
1131                         $this->tooBig = true;
1132                         wfProfileOut( __METHOD__ );
1133                         return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
1134                 }
1135
1136                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1137                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1138                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1139                         ( $bot ? EDIT_FORCE_BOT : 0 );
1140
1141                 $status = $this->mArticle->doEdit( $text, $this->summary, $flags );
1142
1143                 if ( $status->isOK() ) {
1144                         $result['redirect'] = Title::newFromRedirect( $text ) !== null;
1145                         $this->commitWatch();
1146                         wfProfileOut( __METHOD__ );
1147                         return $retval;
1148                 } else {
1149                         $this->isConflict = true;
1150                         wfProfileOut( __METHOD__ );
1151                         return self::AS_END;
1152                 }
1153         }
1154
1155         /**
1156          * Commit the change of watch status
1157          */
1158         protected function commitWatch() {
1159                 if ( $this->watchthis xor $this->mTitle->userIsWatching() ) {
1160                         $dbw = wfGetDB( DB_MASTER );
1161                         $dbw->begin();
1162                         if ( $this->watchthis ) {
1163                                 Action::factory( 'watch', $this->mArticle )->execute();
1164                         } else {
1165                                 Action::factory( 'unwatch', $this->mArticle )->execute();
1166                         }
1167                         $dbw->commit();
1168                 }
1169         }
1170
1171         /**
1172          * Check if no edits were made by other users since
1173          * the time a user started editing the page. Limit to
1174          * 50 revisions for the sake of performance.
1175          */
1176         protected function userWasLastToEdit( $id, $edittime ) {
1177                 if( !$id ) return false;
1178                 $dbw = wfGetDB( DB_MASTER );
1179                 $res = $dbw->select( 'revision',
1180                         'rev_user',
1181                         array(
1182                                 'rev_page' => $this->mArticle->getId(),
1183                                 'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
1184                         ),
1185                         __METHOD__,
1186                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1187                 foreach ( $res as $row ) {
1188                         if( $row->rev_user != $id ) {
1189                                 return false;
1190                         }
1191                 }
1192                 return true;
1193         }
1194
1195         /**
1196          * Check given input text against $wgSpamRegex, and return the text of the first match.
1197          * @return mixed -- matching string or false
1198          */
1199         public static function matchSpamRegex( $text ) {
1200                 global $wgSpamRegex;
1201                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1202                 $regexes = (array)$wgSpamRegex;
1203                 return self::matchSpamRegexInternal( $text, $regexes );
1204         }
1205
1206         /**
1207          * Check given input text against $wgSpamRegex, and return the text of the first match.
1208          * @return mixed -- matching string or false
1209          */
1210         public static function matchSummarySpamRegex( $text ) {
1211                 global $wgSummarySpamRegex;
1212                 $regexes = (array)$wgSummarySpamRegex;
1213                 return self::matchSpamRegexInternal( $text, $regexes );
1214         }
1215
1216         protected static function matchSpamRegexInternal( $text, $regexes ) {
1217                 foreach( $regexes as $regex ) {
1218                         $matches = array();
1219                         if( preg_match( $regex, $text, $matches ) ) {
1220                                 return $matches[0];
1221                         }
1222                 }
1223                 return false;
1224         }
1225
1226         /**
1227          * Initialise form fields in the object
1228          * Called on the first invocation, e.g. when a user clicks an edit link
1229          * @returns bool -- if the requested section is valid
1230          */
1231         function initialiseForm() {
1232                 global $wgUser;
1233                 $this->edittime = $this->mArticle->getTimestamp();
1234                 $this->textbox1 = $this->getContent( false );
1235                 // activate checkboxes if user wants them to be always active
1236                 # Sort out the "watch" checkbox
1237                 if ( $wgUser->getOption( 'watchdefault' ) ) {
1238                         # Watch all edits
1239                         $this->watchthis = true;
1240                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1241                         # Watch creations
1242                         $this->watchthis = true;
1243                 } elseif ( $this->mTitle->userIsWatching() ) {
1244                         # Already watched
1245                         $this->watchthis = true;
1246                 }
1247                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) $this->minoredit = true;
1248                 if ( $this->textbox1 === false ) return false;
1249                 wfProxyCheck();
1250                 return true;
1251         }
1252
1253         function setHeaders() {
1254                 global $wgOut;
1255                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1256                 if ( $this->formtype == 'preview' ) {
1257                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
1258                 }
1259                 if ( $this->isConflict ) {
1260                         $wgOut->setPageTitle( wfMsg( 'editconflict', $this->getContextTitle()->getPrefixedText() ) );
1261                 } elseif ( $this->section != '' ) {
1262                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1263                         $wgOut->setPageTitle( wfMsg( $msg, $this->getContextTitle()->getPrefixedText() ) );
1264                 } else {
1265                         # Use the title defined by DISPLAYTITLE magic word when present
1266                         if ( isset( $this->mParserOutput )
1267                          && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
1268                                 $title = $dt;
1269                         } else {
1270                                 $title = $this->getContextTitle()->getPrefixedText();
1271                         }
1272                         $wgOut->setPageTitle( wfMsg( 'editing', $title ) );
1273                 }
1274         }
1275
1276         /**
1277          * Send the edit form and related headers to $wgOut
1278          * @param $formCallback Callback that takes an OutputPage parameter; will be called
1279          *     during form output near the top, for captchas and the like.
1280          */
1281         function showEditForm( $formCallback = null ) {
1282                 global $wgOut, $wgUser;
1283
1284                 wfProfileIn( __METHOD__ );
1285
1286                 $sk = $wgUser->getSkin();
1287
1288                 #need to parse the preview early so that we know which templates are used,
1289                 #otherwise users with "show preview after edit box" will get a blank list
1290                 #we parse this near the beginning so that setHeaders can do the title
1291                 #setting work instead of leaving it in getPreviewText
1292                 $previewOutput = '';
1293                 if ( $this->formtype == 'preview' ) {
1294                         $previewOutput = $this->getPreviewText();
1295                 }
1296
1297                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) );
1298
1299                 $this->setHeaders();
1300
1301                 # Enabled article-related sidebar, toplinks, etc.
1302                 $wgOut->setArticleRelated( true );
1303
1304                 if ( $this->showHeader() === false ) {
1305                         wfProfileOut( __METHOD__ );
1306                         return;
1307                 }
1308
1309                 $action = htmlspecialchars( $this->getActionURL( $this->getContextTitle() ) );
1310
1311                 if ( $wgUser->getOption( 'showtoolbar' ) and !$this->isCssJsSubpage ) {
1312                         # prepare toolbar for edit buttons
1313                         $toolbar = EditPage::getEditToolbar();
1314                 } else {
1315                         $toolbar = '';
1316                 }
1317
1318
1319                 $wgOut->addHTML( $this->editFormPageTop );
1320
1321                 if ( $wgUser->getOption( 'previewontop' ) ) {
1322                         $this->displayPreviewArea( $previewOutput, true );
1323                 }
1324
1325                 $wgOut->addHTML( $this->editFormTextTop );
1326
1327                 $templates = $this->getTemplates();
1328                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1329
1330                 $hiddencats = $this->mArticle->getHiddenCategories();
1331                 $formattedhiddencats = $sk->formatHiddenCategories( $hiddencats );
1332
1333                 if ( $this->wasDeletedSinceLastEdit() && 'save' != $this->formtype ) {
1334                         $wgOut->wrapWikiMsg(
1335                                 "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
1336                                 'deletedwhileediting' );
1337                 } elseif ( $this->wasDeletedSinceLastEdit() ) {
1338                         // Hide the toolbar and edit area, user can click preview to get it back
1339                         // Add an confirmation checkbox and explanation.
1340                         $toolbar = '';
1341                         // @todo move this to a cleaner conditional instead of blanking a variable
1342                 }
1343                 $wgOut->addHTML( <<<HTML
1344 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1345 HTML
1346 );
1347
1348                 if ( is_callable( $formCallback ) ) {
1349                         call_user_func_array( $formCallback, array( &$wgOut ) );
1350                 }
1351
1352                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1353
1354                 // Put these up at the top to ensure they aren't lost on early form submission
1355                 $this->showFormBeforeText();
1356
1357                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
1358                         $username = $this->lastDelete->user_name;
1359                         $comment = $this->lastDelete->log_comment;
1360
1361                         // It is better to not parse the comment at all than to have templates expanded in the middle
1362                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
1363                         $key = $comment === ''
1364                                 ? 'confirmrecreate-noreason'
1365                                 : 'confirmrecreate';
1366                         $wgOut->addHTML(
1367                                 '<div class="mw-confirm-recreate">' .
1368                                 wfMsgExt( $key, 'parseinline', $username, "<nowiki>$comment</nowiki>" ) .
1369                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1370                                         array( 'title' => $sk->titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1371                                 ) .
1372                                 '</div>'
1373                         );
1374                 }
1375
1376                 # If a blank edit summary was previously provided, and the appropriate
1377                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1378                 # user being bounced back more than once in the event that a summary
1379                 # is not required.
1380                 #####
1381                 # For a bit more sophisticated detection of blank summaries, hash the
1382                 # automatic one and pass that in the hidden field wpAutoSummary.
1383                 if ( $this->missingSummary ||
1384                         ( $this->section == 'new' && $this->nosummary ) )
1385                                 $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
1386                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1387                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
1388
1389                 $wgOut->addHTML( Html::hidden( 'oldid', $this->mArticle->getOldID() ) );
1390
1391                 if ( $this->section == 'new' ) {
1392                         $this->showSummaryInput( true, $this->summary );
1393                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
1394                 }
1395
1396                 $wgOut->addHTML( $this->editFormTextBeforeContent );
1397
1398                 $wgOut->addHTML( $toolbar );
1399
1400                 if ( $this->isConflict ) {
1401                         // In an edit conflict bypass the overrideable content form method
1402                         // and fallback to the raw wpTextbox1 since editconflicts can't be
1403                         // resolved between page source edits and custom ui edits using the
1404                         // custom edit ui.
1405                         $this->showTextbox1( null, $this->getContent() );
1406                 } else {
1407                         $this->showContentForm();
1408                 }
1409
1410                 $wgOut->addHTML( $this->editFormTextAfterContent );
1411
1412                 $wgOut->addWikiText( $this->getCopywarn() );
1413                 if ( isset($this->editFormTextAfterWarn) && $this->editFormTextAfterWarn !== '' )
1414                         $wgOut->addHTML( $this->editFormTextAfterWarn );
1415
1416                 $this->showStandardInputs();
1417
1418                 $this->showFormAfterText();
1419
1420                 $this->showTosSummary();
1421                 $this->showEditTools();
1422
1423                 $wgOut->addHTML( <<<HTML
1424 {$this->editFormTextAfterTools}
1425 <div class='templatesUsed'>
1426 {$formattedtemplates}
1427 </div>
1428 <div class='hiddencats'>
1429 {$formattedhiddencats}
1430 </div>
1431 HTML
1432 );
1433
1434                 if ( $this->isConflict )
1435                         $this->showConflict();
1436
1437                 $wgOut->addHTML( $this->editFormTextBottom );
1438                 $wgOut->addHTML( "</form>\n" );
1439                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1440                         $this->displayPreviewArea( $previewOutput, false );
1441                 }
1442
1443                 wfProfileOut( __METHOD__ );
1444         }
1445
1446         protected function showHeader() {
1447                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
1448                 if ( $this->isConflict ) {
1449                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
1450                         $this->edittime = $this->mArticle->getTimestamp();
1451                 } else {
1452                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
1453                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
1454                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
1455                                 // Someone is welcome to try refactoring though
1456                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
1457                                 return false;
1458                         }
1459
1460                         if ( $this->section != '' && $this->section != 'new' ) {
1461                                 $matches = array();
1462                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1463                                         preg_match( "/^(=+)(.+)\\1/mi", $this->textbox1, $matches );
1464                                         if ( !empty( $matches[2] ) ) {
1465                                                 global $wgParser;
1466                                                 $this->summary = "/* " .
1467                                                         $wgParser->stripSectionName(trim($matches[2])) .
1468                                                         " */ ";
1469                                         }
1470                                 }
1471                         }
1472
1473                         if ( $this->missingComment ) {
1474                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
1475                         }
1476
1477                         if ( $this->missingSummary && $this->section != 'new' ) {
1478                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
1479                         }
1480
1481                         if ( $this->missingSummary && $this->section == 'new' ) {
1482                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
1483                         }
1484
1485                         if ( $this->hookError !== '' ) {
1486                                 $wgOut->addWikiText( $this->hookError );
1487                         }
1488
1489                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1490                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1491                         }
1492
1493                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1494                         // Let sysop know that this will make private content public if saved
1495
1496                                 if ( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1497                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
1498                                 } else if ( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1499                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
1500                                 }
1501
1502                                 if ( !$this->mArticle->mRevision->isCurrent() ) {
1503                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1504                                         $wgOut->addWikiMsg( 'editingold' );
1505                                 }
1506                         }
1507                 }
1508
1509                 if ( wfReadOnly() ) {
1510                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
1511                 } elseif ( $wgUser->isAnon() ) {
1512                         if ( $this->formtype != 'preview' ) {
1513                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
1514                         } else {
1515                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
1516                         }
1517                 } else {
1518                         if ( $this->isCssJsSubpage ) {
1519                                 # Check the skin exists
1520                                 if ( $this->isWrongCaseCssJsPage ) {
1521                                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>", array( 'userinvalidcssjstitle', $this->getContextTitle()->getSkinFromCssJsSubpage() ) );
1522                                 }
1523                                 if ( $this->formtype !== 'preview' ) {
1524                                         if ( $this->isCssSubpage )
1525                                                 $wgOut->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
1526                                         if ( $this->isJsSubpage )
1527                                                 $wgOut->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
1528                                 }
1529                         }
1530                 }
1531
1532                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
1533                         # Is the title semi-protected?
1534                         if ( $this->mTitle->isSemiProtected() ) {
1535                                 $noticeMsg = 'semiprotectedpagewarning';
1536                         } else {
1537                                 # Then it must be protected based on static groups (regular)
1538                                 $noticeMsg = 'protectedpagewarning';
1539                         }
1540                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle->getPrefixedText(), '',
1541                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
1542                 }
1543                 if ( $this->mTitle->isCascadeProtected() ) {
1544                         # Is this page under cascading protection from some source pages?
1545                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1546                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
1547                         $cascadeSourcesCount = count( $cascadeSources );
1548                         if ( $cascadeSourcesCount > 0 ) {
1549                                 # Explain, and list the titles responsible
1550                                 foreach( $cascadeSources as $page ) {
1551                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1552                                 }
1553                         }
1554                         $notice .= '</div>';
1555                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
1556                 }
1557                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
1558                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle->getPrefixedText(), '',
1559                                 array(  'lim' => 1,
1560                                         'showIfEmpty' => false,
1561                                         'msgKey' => array( 'titleprotectedwarning' ),
1562                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
1563                 }
1564
1565                 if ( $this->kblength === false ) {
1566                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1567                 }
1568
1569                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1570                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
1571                                 array( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) ) );
1572                 } else {
1573                         if( !wfMessage('longpage-hint')->isDisabled() ) {
1574                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
1575                                         array( 'longpage-hint', $wgLang->formatSize( strlen( $this->textbox1 ) ), strlen( $this->textbox1 ) )
1576                                 );
1577                         }
1578                 }
1579         }
1580
1581         /**
1582          * Standard summary input and label (wgSummary), abstracted so EditPage
1583          * subclasses may reorganize the form.
1584          * Note that you do not need to worry about the label's for=, it will be
1585          * inferred by the id given to the input. You can remove them both by
1586          * passing array( 'id' => false ) to $userInputAttrs.
1587          *
1588          * @param $summary The value of the summary input
1589          * @param $labelText The html to place inside the label
1590          * @param $inputAttrs An array of attrs to use on the input
1591          * @param $spanLabelAttrs An array of attrs to use on the span inside the label
1592          *
1593          * @return array An array in the format array( $label, $input )
1594          */
1595         function getSummaryInput($summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null) {
1596                 global $wgUser;
1597                 //Note: the maxlength is overriden in JS to 250 and to make it use UTF-8 bytes, not characters.
1598                 $inputAttrs = ( is_array($inputAttrs) ? $inputAttrs : array() ) + array(
1599                         'id' => 'wpSummary',
1600                         'maxlength' => '200',
1601                         'tabindex' => '1',
1602                         'size' => 60,
1603                         'spellcheck' => 'true',
1604                 ) + $wgUser->getSkin()->tooltipAndAccessKeyAttribs( 'summary' );
1605
1606                 $spanLabelAttrs = ( is_array($spanLabelAttrs) ? $spanLabelAttrs : array() ) + array(
1607                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
1608                         'id' => "wpSummaryLabel"
1609                 );
1610
1611                 $label = null;
1612                 if ( $labelText ) {
1613                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
1614                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
1615                 }
1616
1617                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
1618
1619                 return array( $label, $input );
1620         }
1621
1622         /**
1623          * @param $isSubjectPreview Boolean: true if this is the section subject/title
1624          *                          up top, or false if this is the comment summary
1625          *                          down below the textarea
1626          * @param $summary String: The text of the summary to display
1627          * @return String
1628          */
1629         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
1630                 global $wgOut, $wgContLang;
1631                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1632                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
1633                 if ( $isSubjectPreview ) {
1634                         if ( $this->nosummary )
1635                                 return;
1636                 } else {
1637                         if ( !$this->mShowSummaryField )
1638                                 return;
1639                 }
1640                 $summary = $wgContLang->recodeForEdit( $summary );
1641                 $labelText = wfMsgExt( $isSubjectPreview ? 'subject' : 'summary', 'parseinline' );
1642                 list($label, $input) = $this->getSummaryInput($summary, $labelText, array( 'class' => $summaryClass ), array());
1643                 $wgOut->addHTML("{$label} {$input}");
1644         }
1645
1646         /**
1647          * @param $isSubjectPreview Boolean: true if this is the section subject/title
1648          *                          up top, or false if this is the comment summary
1649          *                          down below the textarea
1650          * @param $summary String: the text of the summary to display
1651          * @return String
1652          */
1653         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
1654                 if ( !$summary || ( !$this->preview && !$this->diff ) )
1655                         return "";
1656
1657                 global $wgParser, $wgUser;
1658                 $sk = $wgUser->getSkin();
1659
1660                 if ( $isSubjectPreview )
1661                         $summary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $summary ) );
1662
1663                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
1664
1665                 $summary = wfMsgExt( $message, 'parseinline' ) . $sk->commentBlock( $summary, $this->mTitle, $isSubjectPreview );
1666                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
1667         }
1668
1669         protected function showFormBeforeText() {
1670                 global $wgOut;
1671                 $section = htmlspecialchars( $this->section );
1672                 $wgOut->addHTML( <<<HTML
1673 <input type='hidden' value="{$section}" name="wpSection" />
1674 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
1675 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
1676 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
1677
1678 HTML
1679                 );
1680                 if ( !$this->checkUnicodeCompliantBrowser() )
1681                         $wgOut->addHTML(Html::hidden( 'safemode', '1' ));
1682         }
1683
1684         protected function showFormAfterText() {
1685                 global $wgOut, $wgUser;
1686                 /**
1687                  * To make it harder for someone to slip a user a page
1688                  * which submits an edit form to the wiki without their
1689                  * knowledge, a random token is associated with the login
1690                  * session. If it's not passed back with the submission,
1691                  * we won't save the page, or render user JavaScript and
1692                  * CSS previews.
1693                  *
1694                  * For anon editors, who may not have a session, we just
1695                  * include the constant suffix to prevent editing from
1696                  * broken text-mangling proxies.
1697                  */
1698                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->editToken() ) . "\n" );
1699         }
1700
1701         /**
1702          * Subpage overridable method for printing the form for page content editing
1703          * By default this simply outputs wpTextbox1
1704          * Subclasses can override this to provide a custom UI for editing;
1705          * be it a form, or simply wpTextbox1 with a modified content that will be
1706          * reverse modified when extracted from the post data.
1707          * Note that this is basically the inverse for importContentFormData
1708          */
1709         protected function showContentForm() {
1710                 $this->showTextbox1();
1711         }
1712
1713         /**
1714          * Method to output wpTextbox1
1715          * The $textoverride method can be used by subclasses overriding showContentForm
1716          * to pass back to this method.
1717          *
1718          * @param $customAttribs An array of html attributes to use in the textarea
1719          * @param $textoverride String: optional text to override $this->textarea1 with
1720          */
1721         protected function showTextbox1($customAttribs = null, $textoverride = null) {
1722                 $classes = array(); // Textarea CSS
1723                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
1724                         # Is the title semi-protected?
1725                         if ( $this->mTitle->isSemiProtected() ) {
1726                                 $classes[] = 'mw-textarea-sprotected';
1727                         } else {
1728                                 # Then it must be protected based on static groups (regular)
1729                                 $classes[] = 'mw-textarea-protected';
1730                         }
1731                         # Is the title cascade-protected?
1732                         if ( $this->mTitle->isCascadeProtected() ) {
1733                                 $classes[] = 'mw-textarea-cprotected';
1734                         }
1735                 }
1736                 $attribs = array( 'tabindex' => 1 );
1737                 if ( is_array($customAttribs) )
1738                         $attribs += $customAttribs;
1739
1740                 if ( $this->wasDeletedSinceLastEdit() )
1741                         $attribs['type'] = 'hidden';
1742                 if ( !empty( $classes ) ) {
1743                         if ( isset($attribs['class']) )
1744                                 $classes[] = $attribs['class'];
1745                         $attribs['class'] = implode( ' ', $classes );
1746                 }
1747
1748                 $this->showTextbox( isset($textoverride) ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
1749         }
1750
1751         protected function showTextbox2() {
1752                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
1753         }
1754
1755         protected function showTextbox( $content, $name, $customAttribs = array() ) {
1756                 global $wgOut, $wgUser;
1757
1758                 $wikitext = $this->safeUnicodeOutput( $content );
1759                 if ( $wikitext !== '' ) {
1760                         // Ensure there's a newline at the end, otherwise adding lines
1761                         // is awkward.
1762                         // But don't add a newline if the ext is empty, or Firefox in XHTML
1763                         // mode will show an extra newline. A bit annoying.
1764                         $wikitext .= "\n";
1765                 }
1766
1767                 $attribs = $customAttribs + array(
1768                         'accesskey' => ',',
1769                         'id'   => $name,
1770                         'cols' => $wgUser->getIntOption( 'cols' ),
1771                         'rows' => $wgUser->getIntOption( 'rows' ),
1772                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
1773                 );
1774
1775                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
1776         }
1777
1778         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
1779                 global $wgOut;
1780                 $classes = array();
1781                 if ( $isOnTop )
1782                         $classes[] = 'ontop';
1783
1784                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
1785
1786                 if ( $this->formtype != 'preview' )
1787                         $attribs['style'] = 'display: none;';
1788
1789                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
1790
1791                 if ( $this->formtype == 'preview' ) {
1792                         $this->showPreview( $previewOutput );
1793                 }
1794
1795                 $wgOut->addHTML( '</div>' );
1796
1797                 if ( $this->formtype == 'diff') {
1798                         $this->showDiff();
1799                 }
1800         }
1801
1802         /**
1803          * Append preview output to $wgOut.
1804          * Includes category rendering if this is a category page.
1805          *
1806          * @param $text String: the HTML to be output for the preview.
1807          */
1808         protected function showPreview( $text ) {
1809                 global $wgOut;
1810                 if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
1811                         $this->mArticle->openShowCategory();
1812                 }
1813                 # This hook seems slightly odd here, but makes things more
1814                 # consistent for extensions.
1815                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1816                 $wgOut->addHTML( $text );
1817                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
1818                         $this->mArticle->closeShowCategory();
1819                 }
1820         }
1821
1822         /**
1823          * Give a chance for site and per-namespace customizations of
1824          * terms of service summary link that might exist separately
1825          * from the copyright notice.
1826          *
1827          * This will display between the save button and the edit tools,
1828          * so should remain short!
1829          */
1830         protected function showTosSummary() {
1831                 $msg = 'editpage-tos-summary';
1832                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
1833                 if( !wfMessage( $msg )->isDisabled() ) {
1834                         global $wgOut;
1835                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
1836                         $wgOut->addWikiMsgArray( $msg, array() );
1837                         $wgOut->addHTML( '</div>' );
1838                 }
1839         }
1840
1841         protected function showEditTools() {
1842                 global $wgOut;
1843                 $wgOut->addHTML( '<div class="mw-editTools">' );
1844                 $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
1845                 $wgOut->addHTML( '</div>' );
1846         }
1847
1848         protected function getCopywarn() {
1849                 global $wgRightsText;
1850                 if ( $wgRightsText ) {
1851                         $copywarnMsg = array( 'copyrightwarning',
1852                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1853                                 $wgRightsText );
1854                 } else {
1855                         $copywarnMsg = array( 'copyrightwarning2',
1856                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
1857                 }
1858                 // Allow for site and per-namespace customization of contribution/copyright notice.
1859                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
1860
1861                 return "<div id=\"editpage-copywarn\">\n" .
1862                         call_user_func_array("wfMsgNoTrans", $copywarnMsg) . "\n</div>";
1863         }
1864
1865         protected function showStandardInputs( &$tabindex = 2 ) {
1866                 global $wgOut, $wgUser;
1867                 $wgOut->addHTML( "<div class='editOptions'>\n" );
1868
1869                 if ( $this->section != 'new' ) {
1870                         $this->showSummaryInput( false, $this->summary );
1871                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
1872                 }
1873
1874                 $checkboxes = $this->getCheckboxes( $tabindex, $wgUser->getSkin(),
1875                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1876                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
1877                 $wgOut->addHTML( "<div class='editButtons'>\n" );
1878                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
1879
1880                 $cancel = $this->getCancelLink();
1881                 $separator = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1882                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
1883                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1884                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1885                         htmlspecialchars( wfMsg( 'newwindow' ) );
1886                 $wgOut->addHTML( "      <span class='editHelp'>{$cancel}{$separator}{$edithelp}</span>\n" );
1887                 $wgOut->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
1888         }
1889
1890         /**
1891          * Show an edit conflict. textbox1 is already shown in showEditForm().
1892          * If you want to use another entry point to this function, be careful.
1893          */
1894         protected function showConflict() {
1895                 global $wgOut;
1896                 $this->textbox2 = $this->textbox1;
1897                 $this->textbox1 = $this->getContent();
1898                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
1899                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
1900
1901                         $de = new DifferenceEngine( $this->mTitle );
1902                         $de->setText( $this->textbox2, $this->textbox1 );
1903                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1904
1905                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
1906                         $this->showTextbox2();
1907                 }
1908         }
1909
1910         protected function getLastDelete() {
1911                 $dbr = wfGetDB( DB_SLAVE );
1912                 $data = $dbr->selectRow(
1913                         array( 'logging', 'user' ),
1914                         array( 'log_type',
1915                                    'log_action',
1916                                    'log_timestamp',
1917                                    'log_user',
1918                                    'log_namespace',
1919                                    'log_title',
1920                                    'log_comment',
1921                                    'log_params',
1922                                    'log_deleted',
1923                                    'user_name' ),
1924                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1925                                    'log_title' => $this->mTitle->getDBkey(),
1926                                    'log_type' => 'delete',
1927                                    'log_action' => 'delete',
1928                                    'user_id=log_user' ),
1929                         __METHOD__,
1930                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
1931                 );
1932                 // Quick paranoid permission checks...
1933                 if( is_object( $data ) ) {
1934                         if( $data->log_deleted & LogPage::DELETED_USER )
1935                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
1936                         if( $data->log_deleted & LogPage::DELETED_COMMENT )
1937                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
1938                 }
1939                 return $data;
1940         }
1941
1942         /**
1943          * Get the rendered text for previewing.
1944          * @return string
1945          */
1946         function getPreviewText() {
1947                 global $wgOut, $wgUser, $wgParser;
1948
1949                 wfProfileIn( __METHOD__ );
1950
1951                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1952                         if ( $this->mTokenOkExceptSuffix ) {
1953                                 $note = wfMsg( 'token_suffix_mismatch' );
1954                         } else {
1955                                 $note = wfMsg( 'session_fail_preview' );
1956                         }
1957                 } else if ( $this->incompleteForm ) {
1958                         $note = wfMsg( 'edit_form_incomplete' );
1959                 } else {
1960                         $note = wfMsg( 'previewnote' );
1961                 }
1962
1963                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1964                 $parserOptions->setEditSection( false );
1965                 $parserOptions->setIsPreview( true );
1966                 $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
1967
1968                 global $wgRawHtml;
1969                 if ( $wgRawHtml && !$this->mTokenOk ) {
1970                         // Could be an offsite preview attempt. This is very unsafe if
1971                         // HTML is enabled, as it could be an attack.
1972                         $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
1973                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1974                         wfProfileOut( __METHOD__ );
1975                         return $parsedNote;
1976                 }
1977
1978                 # don't parse user css/js, show message about preview
1979                 # XXX: stupid php bug won't let us use $this->getContextTitle()->isCssJsSubpage() here -- This note has been there since r3530. Sure the bug was fixed time ago?
1980
1981                 if ( $this->isCssJsSubpage || $this->mTitle->isCssOrJsPage() ) {
1982                         $level = 'user';
1983                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1984                                 $level = 'site';
1985                         }
1986
1987                         # Used messages to make sure grep find them:
1988                         # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
1989                         if (preg_match( "/\\.css$/", $this->mTitle->getText() ) ) {
1990                                 $previewtext = "<div id='mw-{$level}csspreview'>\n" . wfMsg( "{$level}csspreview" ) . "\n</div>";
1991                                 $class = "mw-code mw-css";
1992                         } elseif (preg_match( "/\\.js$/", $this->mTitle->getText() ) ) {
1993                                 $previewtext = "<div id='mw-{$level}jspreview'>\n" . wfMsg( "{$level}jspreview" ) . "\n</div>";
1994                                 $class = "mw-code mw-js";
1995                         } else {
1996                                 throw new MWException( 'A CSS/JS (sub)page but which is not css nor js!' );
1997                         }
1998
1999                         $parserOptions->setTidy( true );
2000                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
2001                         $previewHTML = $parserOutput->mText;
2002                         $previewHTML .= "<pre class=\"$class\" dir=\"ltr\">\n" . htmlspecialchars( $this->textbox1 ) . "\n</pre>\n";
2003                 } else {
2004                         $rt = Title::newFromRedirectArray( $this->textbox1 );
2005                         if ( $rt ) {
2006                                 $previewHTML = $this->mArticle->viewRedirect( $rt, false );
2007                         } else {
2008                                 $toparse = $this->textbox1;
2009
2010                                 # If we're adding a comment, we need to show the
2011                                 # summary as the headline
2012                                 if ( $this->section == "new" && $this->summary != "" ) {
2013                                         $toparse = "== {$this->summary} ==\n\n" . $toparse;
2014                                 }
2015
2016                                 wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
2017
2018                                 // Parse mediawiki messages with correct target language
2019                                 if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
2020                                         list( /* $unused */, $lang ) = MessageCache::singleton()->figureMessage( $this->mTitle->getText() );
2021                                         $obj = wfGetLangObj( $lang );
2022                                         $parserOptions->setTargetLanguage( $obj );
2023                                 }
2024
2025                                 $parserOptions->setTidy( true );
2026                                 $parserOptions->enableLimitReport();
2027                                 $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ),
2028                                         $this->mTitle, $parserOptions );
2029
2030                                 $previewHTML = $parserOutput->getText();
2031                                 $this->mParserOutput = $parserOutput;
2032                                 $wgOut->addParserOutputNoText( $parserOutput );
2033
2034                                 if ( count( $parserOutput->getWarnings() ) ) {
2035                                         $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
2036                                 }
2037                         }
2038                 }
2039
2040                 if( $this->isConflict ) {
2041                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
2042                 } else {
2043                         $conflict = '<hr />';
2044                 }
2045
2046                 $previewhead = "<div class='previewnote'>\n" .
2047                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
2048                         $wgOut->parse( $note ) . $conflict . "</div>\n";
2049
2050                 wfProfileOut( __METHOD__ );
2051                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
2052         }
2053
2054         /**
2055          * @return Array
2056          */
2057         function getTemplates() {
2058                 if ( $this->preview || $this->section != '' ) {
2059                         $templates = array();
2060                         if ( !isset( $this->mParserOutput ) ) {
2061                                 return $templates;
2062                         }
2063                         foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
2064                                 foreach( array_keys( $template ) as $dbk ) {
2065                                         $templates[] = Title::makeTitle($ns, $dbk);
2066                                 }
2067                         }
2068                         return $templates;
2069                 } else {
2070                         return $this->mArticle->getUsedTemplates();
2071                 }
2072         }
2073
2074         /**
2075          * Call the stock "user is blocked" page
2076          */
2077         function blockedPage() {
2078                 global $wgOut;
2079                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
2080
2081                 # If the user made changes, preserve them when showing the markup
2082                 # (This happens when a user is blocked during edit, for instance)
2083                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
2084                 if ( $first ) {
2085                         $source = $this->mTitle->exists() ? $this->getContent() : false;
2086                 } else {
2087                         $source = $this->textbox1;
2088                 }
2089
2090                 # Spit out the source or the user's modified version
2091                 if ( $source !== false ) {
2092                         $wgOut->addHTML( '<hr />' );
2093                         $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
2094                         $this->showTextbox1( array( 'readonly' ), $source );
2095                 }
2096         }
2097
2098         /**
2099          * Produce the stock "please login to edit pages" page
2100          */
2101         function userNotLoggedInPage() {
2102                 global $wgUser, $wgOut;
2103                 $skin = $wgUser->getSkin();
2104
2105                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
2106                 $loginLink = $skin->link(
2107                         $loginTitle,
2108                         wfMsgHtml( 'loginreqlink' ),
2109                         array(),
2110                         array( 'returnto' => $this->getContextTitle()->getPrefixedText() ),
2111                         array( 'known', 'noclasses' )
2112                 );
2113
2114                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
2115                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
2116                 $wgOut->setArticleRelated( false );
2117
2118                 $wgOut->addWikiMsgArray( 'whitelistedittext', array( $loginLink ), array( 'replaceafter' ) );
2119                 $wgOut->returnToMain( false, $this->getContextTitle() );
2120         }
2121
2122         /**
2123          * Creates a basic error page which informs the user that
2124          * they have attempted to edit a nonexistent section.
2125          */
2126         function noSuchSectionPage() {
2127                 global $wgOut;
2128
2129                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
2130                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
2131                 $wgOut->setArticleRelated( false );
2132
2133                 $res = wfMsgExt( 'nosuchsectiontext', 'parse', $this->section );
2134                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
2135                 $wgOut->addHTML( $res );
2136
2137                 $wgOut->returnToMain( false, $this->mTitle );
2138         }
2139
2140         /**
2141          * Produce the stock "your edit contains spam" page
2142          *
2143          * @param $match Text which triggered one or more filters
2144          * @deprecated since 1.17 Use method spamPageWithContent() instead
2145          */
2146         static function spamPage( $match = false ) {
2147                 global $wgOut, $wgTitle;
2148
2149                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
2150                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
2151                 $wgOut->setArticleRelated( false );
2152
2153                 $wgOut->addHTML( '<div id="spamprotected">' );
2154                 $wgOut->addWikiMsg( 'spamprotectiontext' );
2155                 if ( $match ) {
2156                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
2157                 }
2158                 $wgOut->addHTML( '</div>' );
2159
2160                 $wgOut->returnToMain( false, $wgTitle );
2161         }
2162
2163         /**
2164          * Show "your edit contains spam" page with your diff and text
2165          *
2166          * @param $match Text which triggered one or more filters
2167          */
2168         public function spamPageWithContent( $match = false ) {
2169                 global $wgOut;
2170                 $this->textbox2 = $this->textbox1;
2171
2172                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
2173                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
2174                 $wgOut->setArticleRelated( false );
2175
2176                 $wgOut->addHTML( '<div id="spamprotected">' );
2177                 $wgOut->addWikiMsg( 'spamprotectiontext' );
2178                 if ( $match ) {
2179                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
2180                 }
2181                 $wgOut->addHTML( '</div>' );
2182
2183                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2184                 $de = new DifferenceEngine( $this->mTitle );
2185                 $de->setText( $this->getContent(), $this->textbox2 );
2186                 $de->showDiff( wfMsg( "storedversion" ), wfMsg( "yourtext" ) );
2187
2188                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2189                 $this->showTextbox2();
2190
2191                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
2192         }
2193
2194
2195         /**
2196          * @private
2197          * @todo document
2198          */
2199         function mergeChangesInto( &$editText ){
2200                 wfProfileIn( __METHOD__ );
2201
2202                 $db = wfGetDB( DB_MASTER );
2203
2204                 // This is the revision the editor started from
2205                 $baseRevision = $this->getBaseRevision();
2206                 if ( is_null( $baseRevision ) ) {
2207                         wfProfileOut( __METHOD__ );
2208                         return false;
2209                 }
2210                 $baseText = $baseRevision->getText();
2211
2212                 // The current state, we want to merge updates into it
2213                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
2214                 if ( is_null( $currentRevision ) ) {
2215                         wfProfileOut( __METHOD__ );
2216                         return false;
2217                 }
2218                 $currentText = $currentRevision->getText();
2219
2220                 $result = '';
2221                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
2222                         $editText = $result;
2223                         wfProfileOut( __METHOD__ );
2224                         return true;
2225                 } else {
2226                         wfProfileOut( __METHOD__ );
2227                         return false;
2228                 }
2229         }
2230
2231         /**
2232          * Check if the browser is on a blacklist of user-agents known to
2233          * mangle UTF-8 data on form submission. Returns true if Unicode
2234          * should make it through, false if it's known to be a problem.
2235          * @return bool
2236          * @private
2237          */
2238         function checkUnicodeCompliantBrowser() {
2239                 global $wgBrowserBlackList;
2240                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
2241                         // No User-Agent header sent? Trust it by default...
2242                         return true;
2243                 }
2244                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
2245                 foreach ( $wgBrowserBlackList as $browser ) {
2246                         if ( preg_match($browser, $currentbrowser) ) {
2247                                 return false;
2248                         }
2249                 }
2250                 return true;
2251         }
2252
2253         /**
2254          * Format an anchor fragment as it would appear for a given section name
2255          * @param $text String
2256          * @return String
2257          * @private
2258          */
2259         function sectionAnchor( $text ) {
2260                 global $wgParser;
2261                 return $wgParser->guessSectionNameFromWikiText( $text );
2262         }
2263
2264         /**
2265          * Shows a bulletin board style toolbar for common editing functions.
2266          * It can be disabled in the user preferences.
2267          * The necessary JavaScript code can be found in skins/common/edit.js.
2268          *
2269          * @return string
2270          */
2271         static function getEditToolbar() {
2272                 global $wgStylePath, $wgContLang, $wgLang, $wgOut;
2273                 global $wgUseTeX, $wgEnableUploads, $wgForeignFileRepos;
2274
2275                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
2276
2277                 /**
2278                  * $toolarray is an array of arrays each of which includes the
2279                  * filename of the button image (without path), the opening
2280                  * tag, the closing tag, optionally a sample text that is
2281                  * inserted between the two when no selection is highlighted
2282                  * and an option to select which switches the automatic
2283                  * selection of inserted text (default is true, see
2284                  * mw-editbutton-image).  The tip text is shown when the user
2285                  * moves the mouse over the button.
2286                  *
2287                  * Also here: accesskeys (key), which are not used yet until
2288                  * someone can figure out a way to make them work in
2289                  * IE. However, we should make sure these keys are not defined
2290                  * on the edit page.
2291                  */
2292                 $toolarray = array(
2293                         array(
2294                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
2295                                 'id'     => 'mw-editbutton-bold',
2296                                 'open'   => '\'\'\'',
2297                                 'close'  => '\'\'\'',
2298                                 'sample' => wfMsg( 'bold_sample' ),
2299                                 'tip'    => wfMsg( 'bold_tip' ),
2300                                 'key'    => 'B'
2301                         ),
2302                         array(
2303                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
2304                                 'id'     => 'mw-editbutton-italic',
2305                                 'open'   => '\'\'',
2306                                 'close'  => '\'\'',
2307                                 'sample' => wfMsg( 'italic_sample' ),
2308                                 'tip'    => wfMsg( 'italic_tip' ),
2309                                 'key'    => 'I'
2310                         ),
2311                         array(
2312                                 'image'  => $wgLang->getImageFile( 'button-link' ),
2313                                 'id'     => 'mw-editbutton-link',
2314                                 'open'   => '[[',
2315                                 'close'  => ']]',
2316                                 'sample' => wfMsg( 'link_sample' ),
2317                                 'tip'    => wfMsg( 'link_tip' ),
2318                                 'key'    => 'L'
2319                         ),
2320                         array(
2321                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
2322                                 'id'     => 'mw-editbutton-extlink',
2323                                 'open'   => '[',
2324                                 'close'  => ']',
2325                                 'sample' => wfMsg( 'extlink_sample' ),
2326                                 'tip'    => wfMsg( 'extlink_tip' ),
2327                                 'key'    => 'X'
2328                         ),
2329                         array(
2330                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
2331                                 'id'     => 'mw-editbutton-headline',
2332                                 'open'   => "\n== ",
2333                                 'close'  => " ==\n",
2334                                 'sample' => wfMsg( 'headline_sample' ),
2335                                 'tip'    => wfMsg( 'headline_tip' ),
2336                                 'key'    => 'H'
2337                         ),
2338                         $imagesAvailable ? array(
2339                                 'image'  => $wgLang->getImageFile( 'button-image' ),
2340                                 'id'     => 'mw-editbutton-image',
2341                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
2342                                 'close'  => ']]',
2343                                 'sample' => wfMsg( 'image_sample' ),
2344                                 'tip'    => wfMsg( 'image_tip' ),
2345                                 'key'    => 'D',
2346                                 'select' => true
2347                         ) : false,
2348                         $imagesAvailable ? array(
2349                                 'image'  => $wgLang->getImageFile( 'button-media' ),
2350                                 'id'     => 'mw-editbutton-media',
2351                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
2352                                 'close'  => ']]',
2353                                 'sample' => wfMsg( 'media_sample' ),
2354                                 'tip'    => wfMsg( 'media_tip' ),
2355                                 'key'    => 'M'
2356                         ) : false,
2357                         $wgUseTeX ?     array(
2358                                 'image'  => $wgLang->getImageFile( 'button-math' ),
2359                                 'id'     => 'mw-editbutton-math',
2360                                 'open'   => "<math>",
2361                                 'close'  => "</math>",
2362                                 'sample' => wfMsg( 'math_sample' ),
2363                                 'tip'    => wfMsg( 'math_tip' ),
2364                                 'key'    => 'C'
2365                         ) : false,
2366                         array(
2367                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
2368                                 'id'     => 'mw-editbutton-nowiki',
2369                                 'open'   => "<nowiki>",
2370                                 'close'  => "</nowiki>",
2371                                 'sample' => wfMsg( 'nowiki_sample' ),
2372                                 'tip'    => wfMsg( 'nowiki_tip' ),
2373                                 'key'    => 'N'
2374                         ),
2375                         array(
2376                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
2377                                 'id'     => 'mw-editbutton-signature',
2378                                 'open'   => '--~~~~',
2379                                 'close'  => '',
2380                                 'sample' => '',
2381                                 'tip'    => wfMsg( 'sig_tip' ),
2382                                 'key'    => 'Y'
2383                         ),
2384                         array(
2385                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
2386                                 'id'     => 'mw-editbutton-hr',
2387                                 'open'   => "\n----\n",
2388                                 'close'  => '',
2389                                 'sample' => '',
2390                                 'tip'    => wfMsg( 'hr_tip' ),
2391                                 'key'    => 'R'
2392                         )
2393                 );
2394                 $toolbar = "<div id='toolbar'>\n";
2395
2396                 $script = '';
2397                 foreach ( $toolarray as $tool ) {
2398                         if ( !$tool ) {
2399                                 continue;
2400                         }
2401
2402                         if( !isset( $tool['select'] ) ) {
2403                           $tool['select'] = true;
2404                         }
2405
2406                         $params = array(
2407                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
2408                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2409                                 // Older browsers show a "speedtip" type message only for ALT.
2410                                 // Ideally these should be different, realistically they
2411                                 // probably don't need to be.
2412                                 $tip = $tool['tip'],
2413                                 $open = $tool['open'],
2414                                 $close = $tool['close'],
2415                                 $sample = $tool['sample'],
2416                                 $cssId = $tool['id'],
2417                         );
2418
2419                         $paramList = implode( ',',
2420                                 array_map( array( 'Xml', 'encodeJsVar' ), $params ) );
2421                         $script .= "mw.toolbar.addButton($paramList);\n";
2422                 }
2423                 $wgOut->addScript( Html::inlineScript(
2424                         "if ( window.mediaWiki ) {{$script}}"
2425                 ) );
2426
2427                 $toolbar .= "\n</div>";
2428
2429                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2430
2431                 return $toolbar;
2432         }
2433
2434         /**
2435          * Returns an array of html code of the following checkboxes:
2436          * minor and watch
2437          *
2438          * @param $tabindex Current tabindex
2439          * @param $skin Skin object
2440          * @param $checked Array of checkbox => bool, where bool indicates the checked
2441          *                 status of the checkbox
2442          *
2443          * @return array
2444          */
2445         public function getCheckboxes( &$tabindex, $skin, $checked ) {
2446                 global $wgUser;
2447
2448                 $checkboxes = array();
2449
2450                 // don't show the minor edit checkbox if it's a new page or section
2451                 if ( !$this->isNew ) {
2452                         $checkboxes['minor'] = '';
2453                         $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
2454                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
2455                                 $attribs = array(
2456                                         'tabindex'  => ++$tabindex,
2457                                         'accesskey' => wfMsg( 'accesskey-minoredit' ),
2458                                         'id'        => 'wpMinoredit',
2459                                 );
2460                                 $checkboxes['minor'] =
2461                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2462                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
2463                                         Xml::expandAttributes( array( 'title' => $skin->titleAttrib( 'minoredit', 'withaccess' ) ) ) .
2464                                         ">{$minorLabel}</label>";
2465                         }
2466                 }
2467
2468                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
2469                 $checkboxes['watch'] = '';
2470                 if ( $wgUser->isLoggedIn() ) {
2471                         $attribs = array(
2472                                 'tabindex'  => ++$tabindex,
2473                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2474                                 'id'        => 'wpWatchthis',
2475                         );
2476                         $checkboxes['watch'] =
2477                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2478                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
2479                                 Xml::expandAttributes( array( 'title' => $skin->titleAttrib( 'watch', 'withaccess' ) ) ) .
2480                                 ">{$watchLabel}</label>";
2481                 }
2482                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2483                 return $checkboxes;
2484         }
2485
2486         /**
2487          * Returns an array of html code of the following buttons:
2488          * save, diff, preview and live
2489          *
2490          * @param $tabindex Current tabindex
2491          *
2492          * @return array
2493          */
2494         public function getEditButtons( &$tabindex ) {
2495                 $buttons = array();
2496
2497                 $temp = array(
2498                         'id'        => 'wpSave',
2499                         'name'      => 'wpSave',
2500                         'type'      => 'submit',
2501                         'tabindex'  => ++$tabindex,
2502                         'value'     => wfMsg( 'savearticle' ),
2503                         'accesskey' => wfMsg( 'accesskey-save' ),
2504                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2505                 );
2506                 $buttons['save'] = Xml::element('input', $temp, '');
2507
2508                 ++$tabindex; // use the same for preview and live preview
2509                 $temp = array(
2510                         'id'        => 'wpPreview',
2511                         'name'      => 'wpPreview',
2512                         'type'      => 'submit',
2513                         'tabindex'  => $tabindex,
2514                         'value'     => wfMsg( 'showpreview' ),
2515                         'accesskey' => wfMsg( 'accesskey-preview' ),
2516                         'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
2517                 );
2518                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
2519                 $buttons['live'] = '';
2520
2521                 $temp = array(
2522                         'id'        => 'wpDiff',
2523                         'name'      => 'wpDiff',
2524                         'type'      => 'submit',
2525                         'tabindex'  => ++$tabindex,
2526                         'value'     => wfMsg( 'showdiff' ),
2527                         'accesskey' => wfMsg( 'accesskey-diff' ),
2528                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
2529                 );
2530                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
2531
2532                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2533                 return $buttons;
2534         }
2535
2536         /**
2537          * Output preview text only. This can be sucked into the edit page
2538          * via JavaScript, and saves the server time rendering the skin as
2539          * well as theoretically being more robust on the client (doesn't
2540          * disturb the edit box's undo history, won't eat your text on
2541          * failure, etc).
2542          *
2543          * @todo This doesn't include category or interlanguage links.
2544          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2545          *       or something...</s> that might also require more skin
2546          *       initialization, so check whether that's a problem.
2547          */
2548         function livePreview() {
2549                 global $wgOut;
2550                 $wgOut->disable();
2551                 header( 'Content-type: text/xml; charset=utf-8' );
2552                 header( 'Cache-control: no-cache' );
2553
2554                 $previewText = $this->getPreviewText();
2555                 #$categories = $skin->getCategoryLinks();
2556
2557                 $s =
2558                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2559                 Xml::tags( 'livepreview', null,
2560                         Xml::element( 'preview', null, $previewText )
2561                         #.      Xml::element( 'category', null, $categories )
2562                 );
2563                 echo $s;
2564         }
2565
2566
2567         public function getCancelLink() {
2568                 global $wgUser;
2569
2570                 $cancelParams = array();
2571                 if ( !$this->isConflict && $this->mArticle->getOldID() > 0 ) {
2572                         $cancelParams['oldid'] = $this->mArticle->getOldID();
2573                 }
2574
2575                 return $wgUser->getSkin()->link(
2576                         $this->getContextTitle(),
2577                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
2578                         array( 'id' => 'mw-editform-cancel' ),
2579                         $cancelParams,
2580                         array( 'known', 'noclasses' )
2581                 );
2582         }
2583
2584         /**
2585          * Get a diff between the current contents of the edit box and the
2586          * version of the page we're editing from.
2587          *
2588          * If this is a section edit, we'll replace the section as for final
2589          * save and then make a comparison.
2590          */
2591         function showDiff() {
2592                 $oldtext = $this->mArticle->fetchContent();
2593                 $newtext = $this->mArticle->replaceSection(
2594                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2595
2596                 wfRunHooks( 'EditPageGetDiffText', array( $this, &$newtext ) );
2597
2598                 $newtext = $this->mArticle->preSaveTransform( $newtext );
2599                 $oldtitle = wfMsgExt( 'currentrev', array( 'parseinline' ) );
2600                 $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2601                 if ( $oldtext !== false  || $newtext != '' ) {
2602                         $de = new DifferenceEngine( $this->mTitle );
2603                         $de->setText( $oldtext, $newtext );
2604                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2605                         $de->showDiffStyle();
2606                 } else {
2607                         $difftext = '';
2608                 }
2609
2610                 global $wgOut;
2611                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2612         }
2613
2614         /**
2615          * Filter an input field through a Unicode de-armoring process if it
2616          * came from an old browser with known broken Unicode editing issues.
2617          *
2618          * @param $request WebRequest
2619          * @param $field String
2620          * @return String
2621          * @private
2622          */
2623         function safeUnicodeInput( $request, $field ) {
2624                 $text = rtrim( $request->getText( $field ) );
2625                 return $request->getBool( 'safemode' )
2626                         ? $this->unmakesafe( $text )
2627                         : $text;
2628         }
2629
2630         /**
2631          * @param $request WebRequest
2632          * @param $text string
2633          * @return string
2634          */
2635         function safeUnicodeText( $request, $text ) {
2636                 $text = rtrim( $text );
2637                 return $request->getBool( 'safemode' )
2638                         ? $this->unmakesafe( $text )
2639                         : $text;
2640         }
2641
2642         /**
2643          * Filter an output field through a Unicode armoring process if it is
2644          * going to an old browser with known broken Unicode editing issues.
2645          *
2646          * @param $text String
2647          * @return String
2648          * @private
2649          */
2650         function safeUnicodeOutput( $text ) {
2651                 global $wgContLang;
2652                 $codedText = $wgContLang->recodeForEdit( $text );
2653                 return $this->checkUnicodeCompliantBrowser()
2654                         ? $codedText
2655                         : $this->makesafe( $codedText );
2656         }
2657
2658         /**
2659          * A number of web browsers are known to corrupt non-ASCII characters
2660          * in a UTF-8 text editing environment. To protect against this,
2661          * detected browsers will be served an armored version of the text,
2662          * with non-ASCII chars converted to numeric HTML character references.
2663          *
2664          * Preexisting such character references will have a 0 added to them
2665          * to ensure that round-trips do not alter the original data.
2666          *
2667          * @param $invalue String
2668          * @return String
2669          * @private
2670          */
2671         function makesafe( $invalue ) {
2672                 // Armor existing references for reversability.
2673                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2674
2675                 $bytesleft = 0;
2676                 $result = "";
2677                 $working = 0;
2678                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2679                         $bytevalue = ord( $invalue[$i] );
2680                         if ( $bytevalue <= 0x7F ) { //0xxx xxxx
2681                                 $result .= chr( $bytevalue );
2682                                 $bytesleft = 0;
2683                         } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
2684                                 $working = $working << 6;
2685                                 $working += ($bytevalue & 0x3F);
2686                                 $bytesleft--;
2687                                 if ( $bytesleft <= 0 ) {
2688                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2689                                 }
2690                         } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
2691                                 $working = $bytevalue & 0x1F;
2692                                 $bytesleft = 1;
2693                         } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
2694                                 $working = $bytevalue & 0x0F;
2695                                 $bytesleft = 2;
2696                         } else { //1111 0xxx
2697                                 $working = $bytevalue & 0x07;
2698                                 $bytesleft = 3;
2699                         }
2700                 }
2701                 return $result;
2702         }
2703
2704         /**
2705          * Reverse the previously applied transliteration of non-ASCII characters
2706          * back to UTF-8. Used to protect data from corruption by broken web browsers
2707          * as listed in $wgBrowserBlackList.
2708          *
2709          * @param $invalue String
2710          * @return String
2711          * @private
2712          */
2713         function unmakesafe( $invalue ) {
2714                 $result = "";
2715                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2716                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i+3] != '0' ) ) {
2717                                 $i += 3;
2718                                 $hexstring = "";
2719                                 do {
2720                                         $hexstring .= $invalue[$i];
2721                                         $i++;
2722                                 } while( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
2723
2724                                 // Do some sanity checks. These aren't needed for reversability,
2725                                 // but should help keep the breakage down if the editor
2726                                 // breaks one of the entities whilst editing.
2727                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
2728                                         $codepoint = hexdec($hexstring);
2729                                         $result .= codepointToUtf8( $codepoint );
2730                                 } else {
2731                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2732                                 }
2733                         } else {
2734                                 $result .= substr( $invalue, $i, 1 );
2735                         }
2736                 }
2737                 // reverse the transform that we made for reversability reasons.
2738                 return strtr( $result, array( "&#x0" => "&#x" ) );
2739         }
2740
2741         function noCreatePermission() {
2742                 global $wgOut;
2743                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2744                 $wgOut->addWikiMsg( 'nocreatetext' );
2745         }
2746
2747         /**
2748          * Attempt submission
2749          * @return bool false if output is done, true if the rest of the form should be displayed
2750          */
2751         function attemptSave() {
2752                 global $wgUser, $wgOut;
2753
2754                 $resultDetails = false;
2755                 # Allow bots to exempt some edits from bot flagging
2756                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
2757                 $value = $this->internalAttemptSave( $resultDetails, $bot );
2758
2759                 if ( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
2760                         $this->didSave = true;
2761                 }
2762
2763                 switch ( $value ) {
2764                         case self::AS_HOOK_ERROR_EXPECTED:
2765                         case self::AS_CONTENT_TOO_BIG:
2766                         case self::AS_ARTICLE_WAS_DELETED:
2767                         case self::AS_CONFLICT_DETECTED:
2768                         case self::AS_SUMMARY_NEEDED:
2769                         case self::AS_TEXTBOX_EMPTY:
2770                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
2771                         case self::AS_END:
2772                                 return true;
2773
2774                         case self::AS_HOOK_ERROR:
2775                         case self::AS_FILTERING:
2776                                 return false;
2777
2778                         case self::AS_SUCCESS_NEW_ARTICLE:
2779                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
2780                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) );
2781                                 return false;
2782
2783                         case self::AS_SUCCESS_UPDATE:
2784                                 $extraQuery = '';
2785                                 $sectionanchor = $resultDetails['sectionanchor'];
2786
2787                                 // Give extensions a chance to modify URL query on update
2788                                 wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this->mArticle, &$sectionanchor, &$extraQuery ) );
2789
2790                                 if ( $resultDetails['redirect'] ) {
2791                                         if ( $extraQuery == '' ) {
2792                                                 $extraQuery = 'redirect=no';
2793                                         } else {
2794                                                 $extraQuery = 'redirect=no&' . $extraQuery;
2795                                         }
2796                                 }
2797                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
2798                                 return false;
2799
2800                         case self::AS_SPAM_ERROR:
2801                                 $this->spamPageWithContent( $resultDetails['spam'] );
2802                                 return false;
2803
2804                         case self::AS_BLOCKED_PAGE_FOR_USER:
2805                                 $this->blockedPage();
2806                                 return false;
2807
2808                         case self::AS_IMAGE_REDIRECT_ANON:
2809                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
2810                                 return false;
2811
2812                         case self::AS_READ_ONLY_PAGE_ANON:
2813                                 $this->userNotLoggedInPage();
2814                                 return false;
2815
2816                         case self::AS_READ_ONLY_PAGE_LOGGED:
2817                         case self::AS_READ_ONLY_PAGE:
2818                                 $wgOut->readOnlyPage();
2819                                 return false;
2820
2821                         case self::AS_RATE_LIMITED:
2822                                 $wgOut->rateLimited();
2823                                 return false;
2824
2825                         case self::AS_NO_CREATE_PERMISSION:
2826                                 $this->noCreatePermission();
2827                                 return;
2828
2829                         case self::AS_BLANK_ARTICLE:
2830                                 $wgOut->redirect( $this->getContextTitle()->getFullURL() );
2831                                 return false;
2832
2833                         case self::AS_IMAGE_REDIRECT_LOGGED:
2834                                 $wgOut->permissionRequired( 'upload' );
2835                                 return false;
2836                 }
2837         }
2838
2839         function getBaseRevision() {
2840                 if ( !$this->mBaseRevision ) {
2841                         $db = wfGetDB( DB_MASTER );
2842                         $baseRevision = Revision::loadFromTimestamp(
2843                                 $db, $this->mTitle, $this->edittime );
2844                         return $this->mBaseRevision = $baseRevision;
2845                 } else {
2846                         return $this->mBaseRevision;
2847                 }
2848         }
2849 }