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