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