includes/EditPage.php

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