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  * Surgeon General's Warning: prolonged exposure to this class is known to cause
  20  * headaches, which may be fatal.
  21  */
  22 class EditPage {
  23
  24         /**
  25          * Status: Article successfully updated
  26          */
  27         const AS_SUCCESS_UPDATE            = 200;
  28
  29         /**
  30          * Status: Article successfully created
  31          */
  32         const AS_SUCCESS_NEW_ARTICLE       = 201;
  33
  34         /**
  35          * Status: Article update aborted by a hook function
  36          */
  37         const AS_HOOK_ERROR                = 210;
  38
  39         /**
  40          * Status: The filter function set in $wgFilterCallback returned true (= block it)
  41          */
  42         const AS_FILTERING                 = 211;
  43
  44         /**
  45          * Status: A hook function returned an error
  46          */
  47         const AS_HOOK_ERROR_EXPECTED       = 212;
  48
  49         /**
  50          * Status: User is blocked from editting this page
  51          */
  52         const AS_BLOCKED_PAGE_FOR_USER     = 215;
  53
  54         /**
  55          * Status: Content too big (> $wgMaxArticleSize)
  56          */
  57         const AS_CONTENT_TOO_BIG           = 216;
  58
  59         /**
  60          * Status: User cannot edit? (not used)
  61          */
  62         const AS_USER_CANNOT_EDIT          = 217;
  63
  64         /**
  65          * Status: this anonymous user is not allowed to edit this page
  66          */
  67         const AS_READ_ONLY_PAGE_ANON       = 218;
  68
  69         /**
  70          * Status: this logged in user is not allowed to edit this page
  71          */
  72         const AS_READ_ONLY_PAGE_LOGGED     = 219;
  73
  74         /**
  75          * Status: wiki is in readonly mode (wfReadOnly() == true)
  76          */
  77         const AS_READ_ONLY_PAGE            = 220;
  78
  79         /**
  80          * Status: rate limiter for action 'edit' was tripped
  81          */
  82         const AS_RATE_LIMITED              = 221;
  83
  84         /**
  85          * Status: article was deleted while editting and param wpRecreate == false or form
  86          * was not posted
  87          */
  88         const AS_ARTICLE_WAS_DELETED       = 222;
  89
  90         /**
  91          * Status: user tried to create this page, but is not allowed to do that
  92          * ( Title->usercan('create') == false )
  93          */
  94         const AS_NO_CREATE_PERMISSION      = 223;
  95
  96         /**
  97          * Status: user tried to create a blank page
  98          */
  99         const AS_BLANK_ARTICLE             = 224;
 100
 101         /**
 102          * Status: (non-resolvable) edit conflict
 103          */
 104         const AS_CONFLICT_DETECTED         = 225;
 105
 106         /**
 107          * Status: no edit summary given and the user has forceeditsummary set and the user is not
 108          * editting in his own userspace or talkspace and wpIgnoreBlankSummary == false
 109          */
 110         const AS_SUMMARY_NEEDED            = 226;
 111
 112         /**
 113          * Status: user tried to create a new section without content
 114          */
 115         const AS_TEXTBOX_EMPTY             = 228;
 116
 117         /**
 118          * Status: article is too big (> $wgMaxArticleSize), after merging in the new section
 119          */
 120         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
 121
 122         /**
 123          * not used
 124          */
 125         const AS_OK                        = 230;
 126
 127         /**
 128          * Status: WikiPage::doEdit() was unsuccessfull
 129          */
 130         const AS_END                       = 231;
 131
 132         /**
 133          * Status: summary contained spam according to one of the regexes in $wgSummarySpamRegex
 134          */
 135         const AS_SPAM_ERROR                = 232;
 136
 137         /**
 138          * Status: anonymous user is not allowed to upload (User::isAllowed('upload') == false)
 139          */
 140         const AS_IMAGE_REDIRECT_ANON       = 233;
 141
 142         /**
 143          * Status: logged in user is not allowed to upload (User::isAllowed('upload') == false)
 144          */
 145         const AS_IMAGE_REDIRECT_LOGGED     = 234;
 146
 147         /**
 148          * Status: can't parse content
 149          */
 150         const AS_PARSE_ERROR                = 240;
 151
 152         /**
 153          * @var Article
 154          */
 155         var $mArticle;
 156
 157         /**
 158          * @var Title
 159          */
 160         var $mTitle;
 161         private $mContextTitle = null;
 162         var $action = 'submit';
 163         var $isConflict = false;
 164         var $isCssJsSubpage = false;
 165         var $isCssSubpage = false;
 166         var $isJsSubpage = false;
 167         var $isWrongCaseCssJsPage = false;
 168         var $isNew = false; // new page or new section
 169         var $deletedSinceEdit;
 170         var $formtype;
 171         var $firsttime;
 172         var $lastDelete;
 173         var $mTokenOk = false;
 174         var $mTokenOkExceptSuffix = false;
 175         var $mTriedSave = false;
 176         var $incompleteForm = false;
 177         var $tooBig = false;
 178         var $kblength = false;
 179         var $missingComment = false;
 180         var $missingSummary = false;
 181         var $allowBlankSummary = false;
 182         var $autoSumm = '';
 183         var $hookError = '';
 184         #var $mPreviewTemplates;
 185
 186         /**
 187          * @var ParserOutput
 188          */
 189         var $mParserOutput;
 190
 191         /**
 192          * Has a summary been preset using GET parameter &summary= ?
 193          * @var Bool
 194          */
 195         var $hasPresetSummary = false;
 196
 197         var $mBaseRevision = false;
 198         var $mShowSummaryField = true;
 199
 200         # Form values
 201         var $save = false, $preview = false, $diff = false;
 202         var $minoredit = false, $watchthis = false, $recreate = false;
 203         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
 204         var $edittime = '', $section = '', $sectiontitle = '', $starttime = '';
 205         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
 206         var $content_model = null, $content_format = null;
 207
 208         # Placeholders for text injection by hooks (must be HTML)
 209         # extensions should take care to _append_ to the present value
 210         public $editFormPageTop = ''; // Before even the preview
 211         public $editFormTextTop = '';
 212         public $editFormTextBeforeContent = '';
 213         public $editFormTextAfterWarn = '';
 214         public $editFormTextAfterTools = '';
 215         public $editFormTextBottom = '';
 216         public $editFormTextAfterContent = '';
 217         public $previewTextAfterContent = '';
 218         public $mPreloadContent = null;
 219
 220         /* $didSave should be set to true whenever an article was succesfully altered. */
 221         public $didSave = false;
 222         public $undidRev = 0;
 223
 224         public $suppressIntro = false;
 225
 226         /**
 227          * @param $article Article
 228          */
 229         public function __construct( Article $article ) {
 230                 $this->mArticle = $article;
 231                 $this->mTitle = $article->getTitle();
 232
 233                 $this->content_model = $this->mTitle->getContentModelName();
 234
 235                 $handler = ContentHandler::getForModelName( $this->content_model );
 236                 $this->content_format = $handler->getDefaultFormat(); #NOTE: should be overridden by format of actual revision
 237         }
 238
 239         /**
 240          * @return Article
 241          */
 242         public function getArticle() {
 243                 return $this->mArticle;
 244         }
 245
 246         /**
 247          * @since 1.19
 248          * @return Title
 249          */
 250         public function getTitle() {
 251                 return $this->mTitle;
 252         }
 253
 254         /**
 255          * Set the context Title object
 256          *
 257          * @param $title Title object or null
 258          */
 259         public function setContextTitle( $title ) {
 260                 $this->mContextTitle = $title;
 261         }
 262
 263         /**
 264          * Get the context title object.
 265          * If not set, $wgTitle will be returned. This behavior might changed in
 266          * the future to return $this->mTitle instead.
 267          *
 268          * @return Title object
 269          */
 270         public function getContextTitle() {
 271                 if ( is_null( $this->mContextTitle ) ) {
 272                         global $wgTitle;
 273                         return $wgTitle;
 274                 } else {
 275                         return $this->mContextTitle;
 276                 }
 277         }
 278
 279         function submit() {
 280                 $this->edit();
 281         }
 282
 283         /**
 284          * This is the function that gets called for "action=edit". It
 285          * sets up various member variables, then passes execution to
 286          * another function, usually showEditForm()
 287          *
 288          * The edit form is self-submitting, so that when things like
 289          * preview and edit conflicts occur, we get the same form back
 290          * with the extra stuff added.  Only when the final submission
 291          * is made and all is well do we actually save and redirect to
 292          * the newly-edited page.
 293          */
 294         function edit() {
 295                 global $wgOut, $wgRequest, $wgUser;
 296                 // Allow extensions to modify/prevent this form or submission
 297                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 298                         return;
 299                 }
 300
 301                 wfProfileIn( __METHOD__ );
 302                 wfDebug( __METHOD__ . ": enter\n" );
 303
 304                 // If they used redlink=1 and the page exists, redirect to the main article
 305                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 306                         $wgOut->redirect( $this->mTitle->getFullURL() );
 307                         wfProfileOut( __METHOD__ );
 308                         return;
 309                 }
 310
 311                 $this->importFormData( $wgRequest );
 312                 $this->firsttime = false;
 313
 314                 if ( $this->live ) {
 315                         $this->livePreview();
 316                         wfProfileOut( __METHOD__ );
 317                         return;
 318                 }
 319
 320                 if ( wfReadOnly() && $this->save ) {
 321                         // Force preview
 322                         $this->save = false;
 323                         $this->preview = true;
 324                 }
 325
 326                 if ( $this->save ) {
 327                         $this->formtype = 'save';
 328                 } elseif ( $this->preview ) {
 329                         $this->formtype = 'preview';
 330                 } elseif ( $this->diff ) {
 331                         $this->formtype = 'diff';
 332                 } else { # First time through
 333                         $this->firsttime = true;
 334                         if ( $this->previewOnOpen() ) {
 335                                 $this->formtype = 'preview';
 336                         } else {
 337                                 $this->formtype = 'initial';
 338                         }
 339                 }
 340
 341                 $permErrors = $this->getEditPermissionErrors();
 342                 if ( $permErrors ) {
 343                         wfDebug( __METHOD__ . ": User can't edit\n" );
 344                         // Auto-block user's IP if the account was "hard" blocked
 345                         $wgUser->spreadAnyEditBlock();
 346
 347                         $this->displayPermissionsError( $permErrors );
 348
 349                         wfProfileOut( __METHOD__ );
 350                         return;
 351                 }
 352
 353                 wfProfileIn( __METHOD__ . "-business-end" );
 354
 355                 $this->isConflict = false;
 356                 // css / js subpages of user pages get a special treatment
 357                 $this->isCssJsSubpage       = $this->mTitle->isCssJsSubpage();
 358                 $this->isCssSubpage         = $this->mTitle->isCssSubpage();
 359                 $this->isJsSubpage          = $this->mTitle->isJsSubpage();
 360                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 361                 $this->isNew                = !$this->mTitle->exists() || $this->section == 'new';
 362
 363                 # Show applicable editing introductions
 364                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 365                         $this->showIntro();
 366                 }
 367
 368                 # Attempt submission here.  This will check for edit conflicts,
 369                 # and redundantly check for locked database, blocked IPs, etc.
 370                 # that edit() already checked just in case someone tries to sneak
 371                 # in the back door with a hand-edited submission URL.
 372
 373                 if ( 'save' == $this->formtype ) {
 374                         if ( !$this->attemptSave() ) {
 375                                 wfProfileOut( __METHOD__ . "-business-end" );
 376                                 wfProfileOut( __METHOD__ );
 377                                 return;
 378                         }
 379                 }
 380
 381                 # First time through: get contents, set time for conflict
 382                 # checking, etc.
 383                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 384                         if ( $this->initialiseForm() === false ) {
 385                                 $this->noSuchSectionPage();
 386                                 wfProfileOut( __METHOD__ . "-business-end" );
 387                                 wfProfileOut( __METHOD__ );
 388                                 return;
 389                         }
 390                         if ( !$this->mTitle->getArticleID() )
 391                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 392                         else
 393                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 394                 }
 395
 396                 $this->showEditForm();
 397                 wfProfileOut( __METHOD__ . "-business-end" );
 398                 wfProfileOut( __METHOD__ );
 399         }
 400
 401         /**
 402          * @return array
 403          */
 404         protected function getEditPermissionErrors() {
 405                 global $wgUser;
 406                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 407                 # Can this title be created?
 408                 if ( !$this->mTitle->exists() ) {
 409                         $permErrors = array_merge( $permErrors,
 410                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 411                 }
 412                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 413                 $remove = array();
 414                 foreach ( $permErrors as $error ) {
 415                         if ( ( $this->preview || $this->diff ) &&
 416                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 417                         {
 418                                 $remove[] = $error;
 419                         }
 420                 }
 421                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 422                 return $permErrors;
 423         }
 424
 425         /**
 426          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 427          * but with the following differences:
 428          * - If redlink=1, the user will be redirected to the page
 429          * - If there is content to display or the error occurs while either saving,
 430          *   previewing or showing the difference, it will be a
 431          *   "View source for ..." page displaying the source code after the error message.
 432          *
 433          * @since 1.19
 434          * @param $permErrors Array of permissions errors, as returned by
 435          *                    Title::getUserPermissionsErrors().
 436          */
 437         protected function displayPermissionsError( array $permErrors ) {
 438                 global $wgRequest, $wgOut;
 439
 440                 if ( $wgRequest->getBool( 'redlink' ) ) {
 441                         // The edit page was reached via a red link.
 442                         // Redirect to the article page and let them click the edit tab if
 443                         // they really want a permission error.
 444                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 445                         return;
 446                 }
 447
 448                 $content = $this->getContentObject();
 449
 450                 # Use the normal message if there's nothing to display
 451                 if ( $this->firsttime && $content->isEmpty() ) {
 452                         $action = $this->mTitle->exists() ? 'edit' :
 453                                 ( $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 454                         throw new PermissionsError( $action, $permErrors );
 455                 }
 456
 457                 $wgOut->setPageTitle( wfMessage( 'viewsource-title', $this->getContextTitle()->getPrefixedText() ) );
 458                 $wgOut->addBacklinkSubtitle( $this->getContextTitle() );
 459                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $permErrors, 'edit' ) );
 460                 $wgOut->addHTML( "<hr />\n" );
 461
 462                 # If the user made changes, preserve them when showing the markup
 463                 # (This happens when a user is blocked during edit, for instance)
 464                 if ( !$this->firsttime ) {
 465                         $text = $this->textbox1;
 466                         $wgOut->addWikiMsg( 'viewyourtext' );
 467                 } else {
 468                         $text = $content->serialize( $this->content_format );
 469                         $wgOut->addWikiMsg( 'viewsourcetext' );
 470                 }
 471
 472                 $this->showTextbox( $text, 'wpTextbox1', array( 'readonly' ) );
 473
 474                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 475                         Linker::formatTemplates( $this->getTemplates() ) ) );
 476
 477                 if ( $this->mTitle->exists() ) {
 478                         $wgOut->returnToMain( null, $this->mTitle );
 479                 }
 480         }
 481
 482         /**
 483          * Show a read-only error
 484          * Parameters are the same as OutputPage:readOnlyPage()
 485          * Redirect to the article page if redlink=1
 486          * @deprecated in 1.19; use displayPermissionsError() instead
 487          */
 488         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 489                 wfDeprecated( __METHOD__, '1.19' );
 490
 491                 global $wgRequest, $wgOut;
 492                 if ( $wgRequest->getBool( 'redlink' ) ) {
 493                         // The edit page was reached via a red link.
 494                         // Redirect to the article page and let them click the edit tab if
 495                         // they really want a permission error.
 496                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 497                 } else {
 498                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 499                 }
 500         }
 501
 502         /**
 503          * Should we show a preview when the edit form is first shown?
 504          *
 505          * @return bool
 506          */
 507         protected function previewOnOpen() {
 508                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 509                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 510                         // Explicit override from request
 511                         return true;
 512                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 513                         // Explicit override from request
 514                         return false;
 515                 } elseif ( $this->section == 'new' ) {
 516                         // Nothing *to* preview for new sections
 517                         return false;
 518                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 519                         // Standard preference behaviour
 520                         return true;
 521                 } elseif ( !$this->mTitle->exists() &&
 522                   isset( $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] ) &&
 523                   $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 524                 {
 525                         // Categories are special
 526                         return true;
 527                 } else {
 528                         return false;
 529                 }
 530         }
 531
 532         /**
 533          * Checks whether the user entered a skin name in uppercase,
 534          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 535          *
 536          * @return bool
 537          */
 538         protected function isWrongCaseCssJsPage() {
 539                 if ( $this->mTitle->isCssJsSubpage() ) {
 540                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 541                         $skins = array_merge(
 542                                 array_keys( Skin::getSkinNames() ),
 543                                 array( 'common' )
 544                         );
 545                         return !in_array( $name, $skins )
 546                                 && in_array( strtolower( $name ), $skins );
 547                 } else {
 548                         return false;
 549                 }
 550         }
 551
 552         /**
 553          * Does this EditPage class support section editing?
 554          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 555          *
 556          * @return bool
 557          */
 558         protected function isSectionEditSupported() {
 559                 return true;
 560         }
 561
 562         /**
 563          * This function collects the form data and uses it to populate various member variables.
 564          * @param $request WebRequest
 565          */
 566         function importFormData( &$request ) {
 567                 global $wgLang, $wgUser;
 568
 569                 wfProfileIn( __METHOD__ );
 570
 571                 # Section edit can come from either the form or a link
 572                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 573
 574                 if ( $request->wasPosted() ) {
 575                         # These fields need to be checked for encoding.
 576                         # Also remove trailing whitespace, but don't remove _initial_
 577                         # whitespace from the text boxes. This may be significant formatting.
 578                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 579                         if ( !$request->getCheck( 'wpTextbox2' ) ) {
 580                                 // Skip this if wpTextbox2 has input, it indicates that we came
 581                                 // from a conflict page with raw page text, not a custom form
 582                                 // modified by subclasses
 583                                 wfProfileIn( get_class($this)."::importContentFormData" );
 584                                 $textbox1 = $this->importContentFormData( $request ); #FIXME: what should this return??
 585                                 if ( isset($textbox1) )
 586                                         $this->textbox1 = $textbox1;
 587                                 wfProfileOut( get_class( $this ) . "::importContentFormData" );
 588                         }
 589
 590                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 591                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250 );
 592
 593                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 594                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 595                         # section titles.
 596                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 597
 598                         # Treat sectiontitle the same way as summary.
 599                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 600                         # currently doing double duty as both edit summary and section title. Right now this
 601                         # is just to allow API edits to work around this limitation, but this should be
 602                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 603                         $this->sectiontitle = $wgLang->truncate( $request->getText( 'wpSectionTitle' ), 250 );
 604                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 605
 606                         $this->edittime = $request->getVal( 'wpEdittime' );
 607                         $this->starttime = $request->getVal( 'wpStarttime' );
 608
 609                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 610
 611                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 612                                 // wpTextbox1 field is missing, possibly due to being "too big"
 613                                 // according to some filter rules such as Suhosin's setting for
 614                                 // suhosin.request.max_value_length (d'oh)
 615                                 $this->incompleteForm = true;
 616                         } else {
 617                                 // edittime should be one of our last fields; if it's missing,
 618                                 // the submission probably broke somewhere in the middle.
 619                                 $this->incompleteForm = is_null( $this->edittime );
 620                         }
 621                         if ( $this->incompleteForm ) {
 622                                 # If the form is incomplete, force to preview.
 623                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 624                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 625                                 $this->preview = true;
 626                         } else {
 627                                 /* Fallback for live preview */
 628                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 629                                 $this->diff = $request->getCheck( 'wpDiff' );
 630
 631                                 // Remember whether a save was requested, so we can indicate
 632                                 // if we forced preview due to session failure.
 633                                 $this->mTriedSave = !$this->preview;
 634
 635                                 if ( $this->tokenOk( $request ) ) {
 636                                         # Some browsers will not report any submit button
 637                                         # if the user hits enter in the comment box.
 638                                         # The unmarked state will be assumed to be a save,
 639                                         # if the form seems otherwise complete.
 640                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 641                                 } elseif ( $this->diff ) {
 642                                         # Failed token check, but only requested "Show Changes".
 643                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 644                                 } else {
 645                                         # Page might be a hack attempt posted from
 646                                         # an external site. Preview instead of saving.
 647                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 648                                         $this->preview = true;
 649                                 }
 650                         }
 651                         $this->save = !$this->preview && !$this->diff;
 652                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 653                                 $this->edittime = null;
 654                         }
 655
 656                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 657                                 $this->starttime = null;
 658                         }
 659
 660                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 661
 662                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 663                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 664
 665                         # Don't force edit summaries when a user is editing their own user or talk page
 666                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 667                                 $this->mTitle->getText() == $wgUser->getName() )
 668                         {
 669                                 $this->allowBlankSummary = true;
 670                         } else {
 671                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary' );
 672                         }
 673
 674                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 675                 } else {
 676                         # Not a posted form? Start with nothing.
 677                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 678                         $this->textbox1     = ''; #FIXME: track content object
 679                         $this->summary      = '';
 680                         $this->sectiontitle = '';
 681                         $this->edittime     = '';
 682                         $this->starttime    = wfTimestampNow();
 683                         $this->edit         = false;
 684                         $this->preview      = false;
 685                         $this->save         = false;
 686                         $this->diff         = false;
 687                         $this->minoredit    = false;
 688                         $this->watchthis    = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 689                         $this->recreate     = false;
 690
 691                         // When creating a new section, we can preload a section title by passing it as the
 692                         // preloadtitle parameter in the URL (Bug 13100)
 693                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 694                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
 695                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
 696                                 $this->summary = $request->getVal( 'preloadtitle' );
 697                         }
 698                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 699                                 $this->summary = $request->getText( 'summary' );
 700                                 if ( $this->summary !== '' ) {
 701                                         $this->hasPresetSummary = true;
 702                                 }
 703                         }
 704
 705                         if ( $request->getVal( 'minor' ) ) {
 706                                 $this->minoredit = true;
 707                         }
 708                 }
 709
 710                 $this->oldid = $request->getInt( 'oldid' );
 711
 712                 $this->bot = $request->getBool( 'bot', true );
 713                 $this->nosummary = $request->getBool( 'nosummary' );
 714
 715                 $content_handler = ContentHandler::getForTitle( $this->mTitle );
 716                 $this->content_model = $request->getText( 'model', $content_handler->getModelName() ); #may be overridden by revision
 717                 $this->content_format = $request->getText( 'format', $content_handler->getDefaultFormat() ); #may be overridden by revision
 718
 719                 #TODO: check if the desired model is allowed in this namespace, and if a transition from the page's current model to the new model is allowed
 720                 #TODO: check if the desired content model supports the given content format!
 721
 722                 $this->live = $request->getCheck( 'live' );
 723                 $this->editintro = $request->getText( 'editintro',
 724                         // Custom edit intro for new sections
 725                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 726
 727                 // Allow extensions to modify form data
 728                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 729
 730                 wfProfileOut( __METHOD__ );
 731         }
 732
 733         /**
 734          * Subpage overridable method for extracting the page content data from the
 735          * posted form to be placed in $this->textbox1, if using customized input
 736          * this method should be overrided and return the page text that will be used
 737          * for saving, preview parsing and so on...
 738          *
 739          * @param $request WebRequest
 740          */
 741         protected function importContentFormData( &$request ) {
 742                 return; // Don't do anything, EditPage already extracted wpTextbox1
 743         }
 744
 745         /**
 746          * Initialise form fields in the object
 747          * Called on the first invocation, e.g. when a user clicks an edit link
 748          * @return bool -- if the requested section is valid
 749          */
 750         function initialiseForm() {
 751                 global $wgUser;
 752                 $this->edittime = $this->mArticle->getTimestamp();
 753
 754                 $content = $this->getContentObject( false ); #TODO: track content object?!
 755                 $this->textbox1 = $content->serialize( $this->content_format );
 756
 757                 // activate checkboxes if user wants them to be always active
 758                 # Sort out the "watch" checkbox
 759                 if ( $wgUser->getOption( 'watchdefault' ) ) {
 760                         # Watch all edits
 761                         $this->watchthis = true;
 762                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 763                         # Watch creations
 764                         $this->watchthis = true;
 765                 } elseif ( $this->mTitle->userIsWatching() ) {
 766                         # Already watched
 767                         $this->watchthis = true;
 768                 }
 769                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) {
 770                         $this->minoredit = true;
 771                 }
 772                 if ( $this->textbox1 === false ) {
 773                         return false;
 774                 }
 775                 wfProxyCheck();
 776                 return true;
 777         }
 778
 779         /**
 780          * Fetch initial editing page content.
 781          *
 782          * @param $def_text string
 783          * @return mixed string on success, $def_text for invalid sections
 784          * @private
 785          * @deprecated since 1.20
 786          */
 787         function getContent( $def_text = false ) { #FIXME: deprecated, replace usage!
 788                 if ( $def_text !== null && $def_text !== false && $def_text !== '' ) {
 789                         $def_content = ContentHandler::makeContent( $def_text, $this->getTitle() );
 790                 } else {
 791                         $def_content = false;
 792                 }
 793
 794                 $content = $this->getContentObject( $def_content );
 795
 796                 return $content->serialize( $this->content_format ); #XXX: really use serialized form? use ContentHandler::getContentText() instead?
 797         }
 798
 799         private function getContentObject( $def_content = null ) { #FIXME: use this!
 800                 global $wgOut, $wgRequest;
 801
 802                 wfProfileIn( __METHOD__ );
 803
 804                 $content = false;
 805
 806                 // For message page not locally set, use the i18n message.
 807                 // For other non-existent articles, use preload text if any.
 808                 if ( !$this->mTitle->exists() || $this->section == 'new' ) {
 809                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
 810                                 # If this is a system message, get the default text.
 811                                 $msg = $this->mTitle->getDefaultMessageText();
 812
 813                                 $content = new WikitextContent($msg); //XXX: really hardcode wikitext here?
 814                         }
 815                         if ( $content === false ) {
 816                                 # If requested, preload some text.
 817                                 $preload = $wgRequest->getVal( 'preload',
 818                                         // Custom preload text for new sections
 819                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 820
 821                                 $content = $this->getPreloadedContent( $preload );
 822                         }
 823                 // For existing pages, get text based on "undo" or section parameters.
 824                 } else {
 825                         if ( $this->section != '' ) {
 826                                 // Get section edit text (returns $def_text for invalid sections)
 827                                 $orig = $this->getOriginalContent();
 828                                 $content = $orig ? $orig->getSection( $this->section ) : null;
 829
 830                                 if ( !$content ) $content = $def_content;
 831                         } else {
 832                                 $undoafter = $wgRequest->getInt( 'undoafter' );
 833                                 $undo = $wgRequest->getInt( 'undo' );
 834
 835                                 if ( $undo > 0 && $undoafter > 0 ) {
 836                                         if ( $undo < $undoafter ) {
 837                                                 # If they got undoafter and undo round the wrong way, switch them
 838                                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 839                                         }
 840
 841                                         $undorev = Revision::newFromId( $undo );
 842                                         $oldrev = Revision::newFromId( $undoafter );
 843
 844                                         # Sanity check, make sure it's the right page,
 845                                         # the revisions exist and they were not deleted.
 846                                         # Otherwise, $content will be left as-is.
 847                                         if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 848                                                 $undorev->getPage() == $oldrev->getPage() &&
 849                                                 $undorev->getPage() == $this->mTitle->getArticleID() &&
 850                                                 !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 851                                                 !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 852
 853                                                 $content = $this->mArticle->getUndoContent( $undorev, $oldrev );
 854
 855                                                 if ( $content === false ) {
 856                                                         # Warn the user that something went wrong
 857                                                         $undoMsg = 'failure';
 858                                                 } else {
 859                                                         # Inform the user of our success and set an automatic edit summary
 860                                                         $undoMsg = 'success';
 861
 862                                                         # If we just undid one rev, use an autosummary
 863                                                         $firstrev = $oldrev->getNext();
 864                                                         if ( $firstrev->getId() == $undo ) {
 865                                                                 $undoSummary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 866                                                                 if ( $this->summary === '' ) {
 867                                                                         $this->summary = $undoSummary;
 868                                                                 } else {
 869                                                                         $this->summary = $undoSummary . wfMsgForContent( 'colon-separator' ) . $this->summary;
 870                                                                 }
 871                                                                 $this->undidRev = $undo;
 872                                                         }
 873                                                         $this->formtype = 'diff';
 874                                                 }
 875                                         } else {
 876                                                 // Failed basic sanity checks.
 877                                                 // Older revisions may have been removed since the link
 878                                                 // was created, or we may simply have got bogus input.
 879                                                 $undoMsg = 'norev';
 880                                         }
 881
 882                                         $class = ( $undoMsg == 'success' ? '' : 'error ' ) . "mw-undo-{$undoMsg}";
 883                                         $this->editFormPageTop .= $wgOut->parse( "<div class=\"{$class}\">" .
 884                                                 wfMsgNoTrans( 'undo-' . $undoMsg ) . '</div>', true, /* interface */true );
 885                                 }
 886
 887                                 if ( $content === false ) {
 888                                         $content = $this->getOriginalContent();
 889                                 }
 890                         }
 891                 }
 892
 893                 wfProfileOut( __METHOD__ );
 894                 return $content;
 895         }
 896
 897         /**
 898          * Get the content of the wanted revision, without section extraction.
 899          *
 900          * The result of this function can be used to compare user's input with
 901          * section replaced in its context (using WikiPage::replaceSection())
 902          * to the original text of the edit.
 903          *
 904          * This difers from Article::getContent() that when a missing revision is
 905          * encountered the result will be an empty string and not the
 906          * 'missing-article' message.
 907          *
 908          * @since 1.19
 909          * @return string
 910          */
 911         private function getOriginalContent() { #FIXME: use Content! set content_model and content_format!
 912                 if ( $this->section == 'new' ) {
 913                         return $this->getCurrentContent();
 914                 }
 915                 $revision = $this->mArticle->getRevisionFetched();
 916                 if ( $revision === null ) {
 917                         if ( !$this->content_model ) $this->content_model = $this->getTitle()->getContentModelName();
 918                         $handler = ContentHandler::getForModelName( $this->content_model );
 919
 920                         return $handler->emptyContent();
 921                 }
 922
 923                 $content = $this->mArticle->getContentObject();
 924                 return $content;
 925         }
 926
 927         /**
 928          * Get the current content of the page. This is basically similar to
 929          * WikiPage::getContent( Revision::RAW ) except that when the page doesn't exist an empty
 930          * content object is returned instead of null.
 931          *
 932          * @since 1.20
 933          * @return string
 934          */
 935         private function getCurrentContent() {
 936                 $rev = $this->mArticle->getRevision();
 937                 $content = $rev ? $rev->getContent( Revision::RAW ) : null;
 938
 939                 if ( $content  === false || $content === null ) {
 940                         if ( !$this->content_model ) $this->content_model = $this->getTitle()->getContentModelName();
 941                         $handler = ContentHandler::getForModelName( $this->content_model );
 942
 943                         return $handler->emptyContent();
 944                 } else {
 945                         #FIXME: nasty side-effect!
 946                         $this->content_model = $rev->getContentModelName();
 947                         $this->content_format = $rev->getContentFormat();
 948
 949                         return $content;
 950                 }
 951         }
 952
 953         /**
 954          * Use this method before edit() to preload some text into the edit box
 955          *
 956          * @param $text string
 957          * @deprecated since 1.20
 958          */
 959         public function setPreloadedText( $text ) { #FIXME: deprecated, use setPreloadedContent()
 960                 wfDeprecated( __METHOD__, "1.20" );
 961
 962                 $content = ContentHandler::makeContent( $text, $this->getTitle() );
 963
 964                 $this->setPreloadedContent( $content );
 965         }
 966
 967         /**
 968          * Use this method before edit() to preload some content into the edit box
 969          *
 970          * @param $content Content
 971          */
 972         public function setPreloadedContent( Content $content ) { #FIXME: use this!
 973                 $this->mPreloadedContent = $content;
 974         }
 975
 976         /**
 977          * Get the contents to be preloaded into the box, either set by
 978          * an earlier setPreloadText() or by loading the given page.
 979          *
 980          * @param $preload String: representing the title to preload from.
 981          * @return String
 982          * @deprecated since 1.20
 983          */
 984         protected function getPreloadedText( $preload ) { #FIXME: B/C only, replace usage!
 985                 wfDeprecated( __METHOD__, "1.20" );
 986
 987                 $content = $this->getPreloadedContent( $preload );
 988                 $text = $content->serialize( $this->content_format ); #XXX: really use serialized form? use ContentHandler::getContentText() instead?!
 989
 990                 return $text;
 991         }
 992
 993         protected function getPreloadedContent( $preload ) { #FIXME: use this!
 994                 global $wgUser;
 995
 996                 if ( !empty( $this->mPreloadContent ) ) {
 997                         return $this->mPreloadContent;
 998                 }
 999
1000                 $handler = ContentHandler::getForTitle( $this->getTitle() );
1001
1002                 if ( $preload === '' ) {
1003                         return $handler->emptyContent();
1004                 }
1005
1006                 $title = Title::newFromText( $preload );
1007                 # Check for existence to avoid getting MediaWiki:Noarticletext
1008                 if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
1009                         return $handler->emptyContent();
1010                 }
1011
1012                 $page = WikiPage::factory( $title );
1013                 if ( $page->isRedirect() ) {
1014                         $title = $page->getRedirectTarget();
1015                         # Same as before
1016                         if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
1017                                 return $handler->emptyContent();
1018                         }
1019                         $page = WikiPage::factory( $title );
1020                 }
1021
1022                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1023                 $content = $page->getContent( Revision::RAW );
1024
1025                 return $content->preloadTransform( $title, $parserOptions );
1026         }
1027
1028         /**
1029          * Make sure the form isn't faking a user's credentials.
1030          *
1031          * @param $request WebRequest
1032          * @return bool
1033          * @private
1034          */
1035         function tokenOk( &$request ) {
1036                 global $wgUser;
1037                 $token = $request->getVal( 'wpEditToken' );
1038                 $this->mTokenOk = $wgUser->matchEditToken( $token );
1039                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
1040                 return $this->mTokenOk;
1041         }
1042
1043         /**
1044          * Attempt submission
1045          * @return bool false if output is done, true if the rest of the form should be displayed
1046          */
1047         function attemptSave() {
1048                 global $wgUser, $wgOut;
1049
1050                 $resultDetails = false;
1051                 # Allow bots to exempt some edits from bot flagging
1052                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
1053                 $status = $this->internalAttemptSave( $resultDetails, $bot );
1054                 // FIXME: once the interface for internalAttemptSave() is made nicer, this should use the message in $status
1055
1056                 if ( $status->value == self::AS_SUCCESS_UPDATE || $status->value == self::AS_SUCCESS_NEW_ARTICLE ) {
1057                         $this->didSave = true;
1058                 }
1059
1060                 switch ( $status->value ) {
1061                         case self::AS_HOOK_ERROR_EXPECTED:
1062                         case self::AS_CONTENT_TOO_BIG:
1063                         case self::AS_ARTICLE_WAS_DELETED:
1064                         case self::AS_CONFLICT_DETECTED:
1065                         case self::AS_SUMMARY_NEEDED:
1066                         case self::AS_TEXTBOX_EMPTY:
1067                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
1068                         case self::AS_END:
1069                                 return true;
1070
1071                         case self::AS_HOOK_ERROR:
1072                         case self::AS_FILTERING:
1073                                 return false;
1074
1075                         case self::AS_PARSE_ERROR:
1076                                 $wgOut->addWikiText( '<div class="error">' . $status->getWikiText() . '</div>');
1077                                 #FIXME: cause editform to be shown again, not just an error!
1078                                 return false;
1079
1080                         case self::AS_SUCCESS_NEW_ARTICLE:
1081                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
1082                                 $anchor = isset ( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
1083                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
1084                                 return false;
1085
1086                         case self::AS_SUCCESS_UPDATE:
1087                                 $extraQuery = '';
1088                                 $sectionanchor = $resultDetails['sectionanchor'];
1089
1090                                 // Give extensions a chance to modify URL query on update
1091                                 wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this->mArticle, &$sectionanchor, &$extraQuery ) );
1092
1093                                 if ( $resultDetails['redirect'] ) {
1094                                         if ( $extraQuery == '' ) {
1095                                                 $extraQuery = 'redirect=no';
1096                                         } else {
1097                                                 $extraQuery = 'redirect=no&' . $extraQuery;
1098                                         }
1099                                 }
1100                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
1101                                 return false;
1102
1103                         case self::AS_BLANK_ARTICLE:
1104                                 $wgOut->redirect( $this->getContextTitle()->getFullURL() );
1105                                 return false;
1106
1107                         case self::AS_SPAM_ERROR:
1108                                 $this->spamPageWithContent( $resultDetails['spam'] );
1109                                 return false;
1110
1111                         case self::AS_BLOCKED_PAGE_FOR_USER:
1112                                 throw new UserBlockedError( $wgUser->getBlock() );
1113
1114                         case self::AS_IMAGE_REDIRECT_ANON:
1115                         case self::AS_IMAGE_REDIRECT_LOGGED:
1116                                 throw new PermissionsError( 'upload' );
1117
1118                         case self::AS_READ_ONLY_PAGE_ANON:
1119                         case self::AS_READ_ONLY_PAGE_LOGGED:
1120                                 throw new PermissionsError( 'edit' );
1121
1122                         case self::AS_READ_ONLY_PAGE:
1123                                 throw new ReadOnlyError;
1124
1125                         case self::AS_RATE_LIMITED:
1126                                 throw new ThrottledError();
1127
1128                         case self::AS_NO_CREATE_PERMISSION:
1129                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
1130                                 throw new PermissionsError( $permission );
1131
1132                 }
1133                 return false;
1134         }
1135
1136         /**
1137          * Attempt submission (no UI)
1138          *
1139          * @param $result
1140          * @param $bot bool
1141          *
1142          * @return Status object, possibly with a message, but always with one of the AS_* constants in $status->value,
1143          *
1144          * FIXME: This interface is TERRIBLE, but hard to get rid of due to various error display idiosyncrasies. There are
1145          * also lots of cases where error metadata is set in the object and retrieved later instead of being returned, e.g.
1146          * AS_CONTENT_TOO_BIG and AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some time.
1147          */
1148         function internalAttemptSave( &$result, $bot = false ) {
1149                 global $wgFilterCallback, $wgUser, $wgRequest, $wgParser;
1150                 global $wgMaxArticleSize;
1151
1152                 $status = Status::newGood();
1153
1154                 wfProfileIn( __METHOD__  );
1155                 wfProfileIn( __METHOD__ . '-checks' );
1156
1157                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
1158                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
1159                         $status->fatal( 'hookaborted' );
1160                         $status->value = self::AS_HOOK_ERROR;
1161                         wfProfileOut( __METHOD__ . '-checks' );
1162                         wfProfileOut( __METHOD__  );
1163                         return $status;
1164                 }
1165
1166                 # Check image redirect
1167                 if ( $this->mTitle->getNamespace() == NS_FILE &&
1168                         Title::newFromRedirect( $this->textbox1 ) instanceof Title && #FIXME: use content handler to check for redirect
1169                         !$wgUser->isAllowed( 'upload' ) ) {
1170                                 $code = $wgUser->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
1171                                 $status->setResult( false, $code );
1172
1173                                 wfProfileOut( __METHOD__ . '-checks' );
1174                                 wfProfileOut( __METHOD__  );
1175
1176                                 return $status;
1177                 }
1178
1179                 # Check for spam
1180                 $match = self::matchSummarySpamRegex( $this->summary );
1181                 if ( $match === false ) {
1182                         $match = self::matchSpamRegex( $this->textbox1 );
1183                 }
1184                 if ( $match !== false ) {
1185                         $result['spam'] = $match;
1186                         $ip = $wgRequest->getIP();
1187                         $pdbk = $this->mTitle->getPrefixedDBkey();
1188                         $match = str_replace( "\n", '', $match );
1189                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
1190                         $status->fatal( 'spamprotectionmatch', $match );
1191                         $status->value = self::AS_SPAM_ERROR;
1192                         wfProfileOut( __METHOD__ . '-checks' );
1193                         wfProfileOut( __METHOD__ );
1194                         return $status;
1195                 }
1196                 if ( $wgFilterCallback && is_callable( $wgFilterCallback ) && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
1197                         # Error messages or other handling should be performed by the filter function
1198                         $status->setResult( false, self::AS_FILTERING );
1199                         wfProfileOut( __METHOD__ . '-checks' );
1200                         wfProfileOut( __METHOD__ );
1201                         return $status;
1202                 }
1203                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
1204                         # Error messages etc. could be handled within the hook...
1205                         $status->fatal( 'hookaborted' );
1206                         $status->value = self::AS_HOOK_ERROR;
1207                         wfProfileOut( __METHOD__ . '-checks' );
1208                         wfProfileOut( __METHOD__ );
1209                         return $status;
1210                 } elseif ( $this->hookError != '' ) {
1211                         # ...or the hook could be expecting us to produce an error
1212                         $status->fatal( 'hookaborted' );
1213                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1214                         wfProfileOut( __METHOD__ . '-checks' );
1215                         wfProfileOut( __METHOD__ );
1216                         return $status;
1217                 }
1218
1219                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
1220                         // Auto-block user's IP if the account was "hard" blocked
1221                         $wgUser->spreadAnyEditBlock();
1222                         # Check block state against master, thus 'false'.
1223                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1224                         wfProfileOut( __METHOD__ . '-checks' );
1225                         wfProfileOut( __METHOD__ );
1226                         return $status;
1227                 }
1228
1229                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1230                 if ( $this->kblength > $wgMaxArticleSize ) {
1231                         // Error will be displayed by showEditForm()
1232                         $this->tooBig = true;
1233                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1234                         wfProfileOut( __METHOD__ . '-checks' );
1235                         wfProfileOut( __METHOD__ );
1236                         return $status;
1237                 }
1238
1239                 if ( !$wgUser->isAllowed( 'edit' ) ) {
1240                         if ( $wgUser->isAnon() ) {
1241                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1242                                 wfProfileOut( __METHOD__ . '-checks' );
1243                                 wfProfileOut( __METHOD__ );
1244                                 return $status;
1245                         } else {
1246                                 $status->fatal( 'readonlytext' );
1247                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1248                                 wfProfileOut( __METHOD__ . '-checks' );
1249                                 wfProfileOut( __METHOD__ );
1250                                 return $status;
1251                         }
1252                 }
1253
1254                 if ( wfReadOnly() ) {
1255                         $status->fatal( 'readonlytext' );
1256                         $status->value = self::AS_READ_ONLY_PAGE;
1257                         wfProfileOut( __METHOD__ . '-checks' );
1258                         wfProfileOut( __METHOD__ );
1259                         return $status;
1260                 }
1261                 if ( $wgUser->pingLimiter() ) {
1262                         $status->fatal( 'actionthrottledtext' );
1263                         $status->value = self::AS_RATE_LIMITED;
1264                         wfProfileOut( __METHOD__ . '-checks' );
1265                         wfProfileOut( __METHOD__ );
1266                         return $status;
1267                 }
1268
1269                 # If the article has been deleted while editing, don't save it without
1270                 # confirmation
1271                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1272                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1273                         wfProfileOut( __METHOD__ . '-checks' );
1274                         wfProfileOut( __METHOD__ );
1275                         return $status;
1276                 }
1277
1278                 wfProfileOut( __METHOD__ . '-checks' );
1279
1280                 # If article is new, insert it.
1281                 $aid = $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
1282                 $new = ( $aid == 0 );
1283
1284                 try {
1285                         if ( $new ) {
1286                                 // Late check for create permission, just in case *PARANOIA*
1287                                 if ( !$this->mTitle->userCan( 'create' ) ) {
1288                                         $status->fatal( 'nocreatetext' );
1289                                         $status->value = self::AS_NO_CREATE_PERMISSION;
1290                                         wfDebug( __METHOD__ . ": no create permission\n" );
1291                                         wfProfileOut( __METHOD__ );
1292                                         return $status;
1293                                 }
1294
1295                                 # Don't save a new article if it's blank.
1296                                 if ( $this->textbox1 == '' ) {
1297                                         $status->setResult( false, self::AS_BLANK_ARTICLE );
1298                                         wfProfileOut( __METHOD__ );
1299                                         return $status;
1300                                 }
1301
1302 <<<<<<< HEAD
1303                                 // Run post-section-merge edit filter
1304                                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
1305                                         # Error messages etc. could be handled within the hook...
1306                                         $status->fatal( 'hookaborted' );
1307                                         $status->value = self::AS_HOOK_ERROR;
1308                                         wfProfileOut( __METHOD__ );
1309                                         return $status;
1310                                 } elseif ( $this->hookError != '' ) {
1311                                         # ...or the hook could be expecting us to produce an error
1312                                         $status->fatal( 'hookaborted' );
1313                                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1314                                         wfProfileOut( __METHOD__ );
1315                                         return $status;
1316                                 }
1317
1318                 $content = ContentHandler::makeContent( $this->textbox1, $this->getTitle(), $this->content_model, $this->content_format );
1319
1320                                 # Handle the user preference to force summaries here. Check if it's not a redirect.
1321                                 if ( !$this->allowBlankSummary && !$content->isRedirect() ) {
1322                                         if ( md5( $this->summary ) == $this->autoSumm ) {
1323                                                 $this->missingSummary = true;
1324                                                 $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1325                                                 $status->value = self::AS_SUMMARY_NEEDED;
1326                                                 wfProfileOut( __METHOD__ );
1327                                                 return $status;
1328                                         }
1329 =======
1330                         $text = $this->textbox1;
1331                         $result['sectionanchor'] = '';
1332                         if ( $this->section == 'new' ) {
1333                                 if ( $this->sectiontitle !== '' ) {
1334                                         // Insert the section title above the content.
1335                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->sectiontitle ) . "\n\n" . $text;
1336
1337                                         // Jump to the new section
1338                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1339
1340                                         // If no edit summary was specified, create one automatically from the section
1341                                         // title and have it link to the new section. Otherwise, respect the summary as
1342                                         // passed.
1343                                         if ( $this->summary === '' ) {
1344                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1345                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1346                                         }
1347                                 } elseif ( $this->summary !== '' ) {
1348                                         // Insert the section title above the content.
1349                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $text;
1350
1351                                         // Jump to the new section
1352                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1353
1354                                         // Create a link to the new section from the edit summary.
1355                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1356                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1357 >>>>>>> master
1358                                 }
1359
1360                                 $result['sectionanchor'] = '';
1361                                 if ( $this->section == 'new' ) {
1362                                         if ( $this->sectiontitle !== '' ) {
1363                                                 // Insert the section title above the content.
1364                                                 $content = $content->addSectionHeader( $this->sectiontitle );
1365
1366                                                 // Jump to the new section
1367                                                 $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1368
1369                                                 // If no edit summary was specified, create one automatically from the section
1370                                                 // title and have it link to the new section. Otherwise, respect the summary as
1371                                                 // passed.
1372                                                 if ( $this->summary === '' ) {
1373                                                         $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1374                                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1375                                                 }
1376                                         } elseif ( $this->summary !== '' ) {
1377                                                 // Insert the section title above the content.
1378                                                 $content = $content->addSectionHeader( $this->sectiontitle );
1379
1380                                                 // Jump to the new section
1381                                                 $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1382
1383                                                 // Create a link to the new section from the edit summary.
1384                                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
1385                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1386                                         }
1387                                 }
1388
1389                                 $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1390
1391                         } else {
1392
1393                                 # Article exists. Check for edit conflict.
1394
1395                                 $this->mArticle->clear(); # Force reload of dates, etc.
1396                                 $timestamp = $this->mArticle->getTimestamp();
1397
1398                                 wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
1399
1400                                 if ( $timestamp != $this->edittime ) {
1401                                         $this->isConflict = true;
1402                                         if ( $this->section == 'new' ) {
1403                                                 if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1404                                                         $this->mArticle->getComment() == $this->summary ) {
1405                                                         // Probably a duplicate submission of a new comment.
1406                                                         // This can happen when squid resends a request after
1407                                                         // a timeout but the first one actually went through.
1408                                                         wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
1409                                                 } else {
1410                                                         // New comment; suppress conflict.
1411                                                         $this->isConflict = false;
1412                                                         wfDebug( __METHOD__ .": conflict suppressed; new section\n" );
1413                                                 }
1414                                         } elseif ( $this->section == '' && $this->userWasLastToEdit( $wgUser->getId(), $this->edittime ) ) {
1415                                                 # Suppress edit conflict with self, except for section edits where merging is required.
1416                                                 wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1417                                                 $this->isConflict = false;
1418 <<<<<<< HEAD
1419 =======
1420                                                 wfDebug( __METHOD__ . ": conflict suppressed; new section\n" );
1421 >>>>>>> master
1422                                         }
1423                                 }
1424 <<<<<<< HEAD
1425
1426                                 // If sectiontitle is set, use it, otherwise use the summary as the section title (for
1427                                 // backwards compatibility with old forms/bots).
1428                                 if ( $this->sectiontitle !== '' ) {
1429                                         $sectionTitle = $this->sectiontitle;
1430 =======
1431                         }
1432
1433                         // If sectiontitle is set, use it, otherwise use the summary as the section title (for
1434                         // backwards compatibility with old forms/bots).
1435                         if ( $this->sectiontitle !== '' ) {
1436                                 $sectionTitle = $this->sectiontitle;
1437                         } else {
1438                                 $sectionTitle = $this->summary;
1439                         }
1440
1441                         if ( $this->isConflict ) {
1442                                 wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '{$timestamp}')\n" );
1443                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle, $this->edittime );
1444                         } else {
1445                                 wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
1446                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle );
1447                         }
1448                         if ( is_null( $text ) ) {
1449                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1450                                 $this->isConflict = true;
1451                                 $text = $this->textbox1; // do not try to merge here!
1452                         } elseif ( $this->isConflict ) {
1453                                 # Attempt merge
1454                                 if ( $this->mergeChangesInto( $text ) ) {
1455                                         // Successful merge! Maybe we should tell the user the good news?
1456                                         $this->isConflict = false;
1457                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1458 >>>>>>> master
1459                                 } else {
1460                                         $sectionTitle = $this->summary;
1461                                 }
1462
1463                                 $textbox_content = ContentHandler::makeContent( $this->textbox1, $this->getTitle(), $this->content_model, $this->content_format );
1464                                 $content = false;
1465
1466                                 if ( $this->isConflict ) {
1467                                         wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '{$timestamp}')\n" );
1468
1469                                         $content = $this->mArticle->replaceSectionContent( $this->section, $textbox_content, $sectionTitle, $this->edittime );
1470                                 } else {
1471                                         wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
1472
1473                                         $content = $this->mArticle->replaceSectionContent( $this->section, $textbox_content, $sectionTitle );
1474                                 }
1475
1476                                 if ( is_null( $content ) ) {
1477                                         wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1478                                         $this->isConflict = true;
1479                                         $content = $textbox_content; // do not try to merge here!
1480                                 } elseif ( $this->isConflict ) {
1481                                         # Attempt merge
1482                                         if ( $this->mergeChangesIntoContent( $textbox_content ) ) {
1483                                                 // Successful merge! Maybe we should tell the user the good news?
1484                                                 $content = $textbox_content;
1485                                                 $this->isConflict = false;
1486                                                 wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1487                                         } else {
1488                                                 $this->section = '';
1489                                                 #$this->textbox1 = $text; #redundant, nothing to do here?
1490                                                 wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1491                                         }
1492                                 }
1493
1494                                 if ( $this->isConflict ) {
1495                                         $status->setResult( false, self::AS_CONFLICT_DETECTED );
1496                                         wfProfileOut( __METHOD__ );
1497                                         return $status;
1498                                 }
1499
1500                                 // Run post-section-merge edit filter
1501                                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $content->serialize( $this->content_format ), &$this->hookError, $this->summary ) )
1502                                         || !wfRunHooks( 'EditFilterMergedContent', array( $this, $content, &$this->hookError, $this->summary ) ) ) { #FIXME: document new hook
1503                                         # Error messages etc. could be handled within the hook...
1504                                         $status->fatal( 'hookaborted' );
1505                                         $status->value = self::AS_HOOK_ERROR;
1506                                         wfProfileOut( __METHOD__ );
1507                                         return $status;
1508                                 } elseif ( $this->hookError != '' ) {
1509                                         # ...or the hook could be expecting us to produce an error
1510                                         $status->fatal( 'hookaborted' );
1511                                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1512                                         wfProfileOut( __METHOD__ );
1513                                         return $status;
1514                                 }
1515
1516                                 # Handle the user preference to force summaries here, but not for null edits
1517                                 if ( $this->section != 'new' && !$this->allowBlankSummary
1518                                         && !$content->equals( $this->getOriginalContent() )
1519                                         && !$content->isRedirect() ) # check if it's not a redirect
1520                                 {
1521                                         if ( md5( $this->summary ) == $this->autoSumm ) {
1522                                                 $this->missingSummary = true;
1523                                                 $status->fatal( 'missingsummary' );
1524                                                 $status->value = self::AS_SUMMARY_NEEDED;
1525                                                 wfProfileOut( __METHOD__ );
1526                                                 return $status;
1527                                         }
1528                                 }
1529
1530                                 # And a similar thing for new sections
1531                                 if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1532                                         if ( trim( $this->summary ) == '' ) {
1533                                                 $this->missingSummary = true;
1534                                                 $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1535                                                 $status->value = self::AS_SUMMARY_NEEDED;
1536                                                 wfProfileOut( __METHOD__ );
1537                                                 return $status;
1538                                         }
1539                                 }
1540
1541                                 # All's well
1542                                 wfProfileIn( __METHOD__ . '-sectionanchor' );
1543                                 $sectionanchor = '';
1544                                 if ( $this->section == 'new' ) {
1545                                         if ( $this->textbox1 == '' ) {
1546                                                 $this->missingComment = true;
1547                                                 $status->fatal( 'missingcommenttext' );
1548                                                 $status->value = self::AS_TEXTBOX_EMPTY;
1549                                                 wfProfileOut( __METHOD__ . '-sectionanchor' );
1550                                                 wfProfileOut( __METHOD__ );
1551                                                 return $status;
1552                                         }
1553                                         if ( $this->sectiontitle !== '' ) {
1554                                                 $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1555                                                 // If no edit summary was specified, create one automatically from the section
1556                                                 // title and have it link to the new section. Otherwise, respect the summary as
1557                                                 // passed.
1558                                                 if ( $this->summary === '' ) {
1559                                                         $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1560                                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1561                                                 }
1562                                         } elseif ( $this->summary !== '' ) {
1563                                                 $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1564                                                 # This is a new section, so create a link to the new section
1565                                                 # in the revision summary.
1566                                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
1567                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1568                                         }
1569                                 } elseif ( $this->section != '' ) {
1570                                         # Try to get a section anchor from the section source, redirect to edited section if header found
1571                                         # XXX: might be better to integrate this into Article::replaceSection
1572                                         # for duplicate heading checking and maybe parsing
1573                                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1574                                         # we can't deal with anchors, includes, html etc in the header for now,
1575                                         # headline would need to be parsed to improve this
1576                                         if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1577                                                 $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1578                                         }
1579                                 }
1580                                 $result['sectionanchor'] = $sectionanchor;
1581                                 wfProfileOut( __METHOD__ . '-sectionanchor' );
1582
1583                                 // Save errors may fall down to the edit form, but we've now
1584                                 // merged the section into full text. Clear the section field
1585                                 // so that later submission of conflict forms won't try to
1586                                 // replace that into a duplicated mess.
1587                                 $this->textbox1 = $content->serialize( $this->content_format );
1588                                 $this->section = '';
1589
1590                                 $status->value = self::AS_SUCCESS_UPDATE;
1591                         }
1592
1593                         // Check for length errors again now that the section is merged in
1594                         $this->kblength = (int)( strlen( $content->serialize( $this->content_format ) ) / 1024 );
1595                         if ( $this->kblength > $wgMaxArticleSize ) {
1596                                 $this->tooBig = true;
1597                                 $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1598                                 wfProfileOut( __METHOD__ );
1599                                 return $status;
1600                         }
1601
1602                         $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1603                                 ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1604                                 ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1605                                 ( $bot ? EDIT_FORCE_BOT : 0 );
1606
1607                         $doEditStatus = $this->mArticle->doEditContent( $content, $this->summary, $flags, false, null, $this->content_format );
1608
1609                         if ( $doEditStatus->isOK() ) {
1610                                 $result['redirect'] = $content->isRedirect();
1611                                 $this->commitWatch();
1612                                 wfProfileOut( __METHOD__ );
1613                                 return $status;
1614                         } else {
1615                                 $this->isConflict = true;
1616                                 $doEditStatus->value = self::AS_END; // Destroys data doEdit() put in $status->value but who cares
1617                                 wfProfileOut( __METHOD__ );
1618                                 return $doEditStatus;
1619                         }
1620                 } catch (MWContentSerializationException $ex) {
1621                         $status->fatal( 'content-failed-to-parse', $this->content_model, $this->content_format, $ex->getMessage() );
1622                         $status->value = self::AS_PARSE_ERROR;
1623                         wfProfileOut( __METHOD__ );
1624                         return $status;
1625                 }
1626         }
1627
1628         /**
1629          * Commit the change of watch status
1630          */
1631         protected function commitWatch() {
1632                 global $wgUser;
1633                 if ( $this->watchthis xor $this->mTitle->userIsWatching() ) {
1634                         $dbw = wfGetDB( DB_MASTER );
1635                         $dbw->begin( __METHOD__ );
1636                         if ( $this->watchthis ) {
1637                                 WatchAction::doWatch( $this->mTitle, $wgUser );
1638                         } else {
1639                                 WatchAction::doUnwatch( $this->mTitle, $wgUser );
1640                         }
1641                         $dbw->commit( __METHOD__ );
1642                 }
1643         }
1644
1645         /**
1646          * Check if no edits were made by other users since
1647          * the time a user started editing the page. Limit to
1648          * 50 revisions for the sake of performance.
1649          *
1650          * @param $id int
1651          * @param $edittime string
1652          *
1653          * @return bool
1654          */
1655         protected function userWasLastToEdit( $id, $edittime ) {
1656                 if ( !$id ) return false;
1657                 $dbw = wfGetDB( DB_MASTER );
1658                 $res = $dbw->select( 'revision',
1659                         'rev_user',
1660                         array(
1661                                 'rev_page' => $this->mTitle->getArticleID(),
1662                                 'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $edittime ) )
1663                         ),
1664                         __METHOD__,
1665                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1666                 foreach ( $res as $row ) {
1667                         if ( $row->rev_user != $id ) {
1668                                 return false;
1669                         }
1670                 }
1671                 return true;
1672         }
1673
1674         /**
1675          * @private
1676          * @todo document
1677          *
1678          * @parma $editText string
1679          *
1680          * @return bool
1681          * @deprecated since 1.20
1682          */
1683         function mergeChangesInto( &$editText ){
1684                 wfDebug( __METHOD__, "1.20" );
1685
1686                 $editContent = ContentHandler::makeContent( $editText, $this->getTitle(), $this->content_model, $this->content_format );
1687
1688                 $ok = $this->mergeChangesIntoContent( $editContent );
1689
1690                 if ( $ok ) {
1691                         $editText = $editContent->serialize( $this->content_format ); #XXX: really serialize?!
1692                         return true;
1693                 } else {
1694                         return false;
1695                 }
1696         }
1697
1698         /**
1699          * @private
1700          * @todo document
1701          *
1702          * @parma $editText string
1703          *
1704          * @return bool
1705          * @since since 1.20
1706          */
1707         private function mergeChangesIntoContent( &$editContent ){
1708                 wfProfileIn( __METHOD__ );
1709
1710                 $db = wfGetDB( DB_MASTER );
1711
1712                 // This is the revision the editor started from
1713                 $baseRevision = $this->getBaseRevision();
1714                 if ( is_null( $baseRevision ) ) {
1715                         wfProfileOut( __METHOD__ );
1716                         return false;
1717                 }
1718                 $baseContent = $baseRevision->getContent();
1719
1720                 // The current state, we want to merge updates into it
1721                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1722                 if ( is_null( $currentRevision ) ) {
1723                         wfProfileOut( __METHOD__ );
1724                         return false;
1725                 }
1726                 $currentContent = $currentRevision->getContent();
1727
1728                 $handler = ContentHandler::getForModelName( $baseContent->getModelName() );
1729
1730                 $result = $handler->merge3( $baseContent, $editContent, $currentContent );
1731
1732                 if ( $result ) {
1733                         $editContent = $result;
1734                         wfProfileOut( __METHOD__ );
1735                         return true;
1736                 } else {
1737                         wfProfileOut( __METHOD__ );
1738                         return false;
1739                 }
1740         }
1741
1742         /**
1743          * @return Revision
1744          */
1745         function getBaseRevision() {
1746                 if ( !$this->mBaseRevision ) {
1747                         $db = wfGetDB( DB_MASTER );
1748                         $baseRevision = Revision::loadFromTimestamp(
1749                                 $db, $this->mTitle, $this->edittime );
1750                         return $this->mBaseRevision = $baseRevision;
1751                 } else {
1752                         return $this->mBaseRevision;
1753                 }
1754         }
1755
1756         /**
1757          * Check given input text against $wgSpamRegex, and return the text of the first match.
1758          *
1759          * @param $text string
1760          *
1761          * @return string|bool matching string or false
1762          */
1763         public static function matchSpamRegex( $text ) {
1764                 global $wgSpamRegex;
1765                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1766                 $regexes = (array)$wgSpamRegex;
1767                 return self::matchSpamRegexInternal( $text, $regexes );
1768         }
1769
1770         /**
1771          * Check given input text against $wgSpamRegex, and return the text of the first match.
1772          *
1773          * @parma $text string
1774          *
1775          * @return string|bool  matching string or false
1776          */
1777         public static function matchSummarySpamRegex( $text ) {
1778                 global $wgSummarySpamRegex;
1779                 $regexes = (array)$wgSummarySpamRegex;
1780                 return self::matchSpamRegexInternal( $text, $regexes );
1781         }
1782
1783         /**
1784          * @param $text string
1785          * @param $regexes array
1786          * @return bool|string
1787          */
1788         protected static function matchSpamRegexInternal( $text, $regexes ) {
1789                 foreach ( $regexes as $regex ) {
1790                         $matches = array();
1791                         if ( preg_match( $regex, $text, $matches ) ) {
1792                                 return $matches[0];
1793                         }
1794                 }
1795                 return false;
1796         }
1797
1798         function setHeaders() {
1799                 global $wgOut, $wgUser;
1800
1801                 $wgOut->addModules( 'mediawiki.action.edit' );
1802
1803                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
1804                         $wgOut->addModules( 'mediawiki.legacy.preview' );
1805                 }
1806                 // Bug #19334: textarea jumps when editing articles in IE8
1807                 $wgOut->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
1808
1809                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1810
1811                 # Enabled article-related sidebar, toplinks, etc.
1812                 $wgOut->setArticleRelated( true );
1813
1814                 $contextTitle = $this->getContextTitle();
1815                 if ( $this->isConflict ) {
1816                         $msg = 'editconflict';
1817                 } elseif ( $contextTitle->exists() && $this->section != '' ) {
1818                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1819                 } else {
1820                         $msg = $contextTitle->exists() || ( $contextTitle->getNamespace() == NS_MEDIAWIKI && $contextTitle->getDefaultMessageText() !== false ) ?
1821                                 'editing' : 'creating';
1822                 }
1823                 # Use the title defined by DISPLAYTITLE magic word when present
1824                 $displayTitle = isset( $this->mParserOutput ) ? $this->mParserOutput->getDisplayTitle() : false;
1825                 if ( $displayTitle === false ) {
1826                         $displayTitle = $contextTitle->getPrefixedText();
1827                 }
1828                 $wgOut->setPageTitle( wfMessage( $msg, $displayTitle ) );
1829         }
1830
1831         /**
1832          * Show all applicable editing introductions
1833          */
1834         protected function showIntro() {
1835                 global $wgOut, $wgUser;
1836                 if ( $this->suppressIntro ) {
1837                         return;
1838                 }
1839
1840                 $namespace = $this->mTitle->getNamespace();
1841
1842                 if ( $namespace == NS_MEDIAWIKI ) {
1843                         # Show a warning if editing an interface message
1844                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
1845                 } else if( $namespace == NS_FILE ) {
1846                         # Show a hint to shared repo
1847                         $file = wfFindFile( $this->mTitle );
1848                         if( $file && !$file->isLocal() ) {
1849                                 $descUrl = $file->getDescriptionUrl();
1850                                 # there must be a description url to show a hint to shared repo
1851                                 if( $descUrl ) {
1852                                         if( !$this->mTitle->exists() ) {
1853                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-create\">\n$1\n</div>", array (
1854                                                                         'sharedupload-desc-create', $file->getRepo()->getDisplayName(), $descUrl
1855                                                 ) );
1856                                         } else {
1857                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-edit\">\n$1\n</div>", array(
1858                                                                         'sharedupload-desc-edit', $file->getRepo()->getDisplayName(), $descUrl
1859                                                 ) );
1860                                         }
1861                                 }
1862                         }
1863                 }
1864
1865                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
1866                 # Show log extract when the user is currently blocked
1867                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
1868                         $parts = explode( '/', $this->mTitle->getText(), 2 );
1869                         $username = $parts[0];
1870                         $user = User::newFromName( $username, false /* allow IP users*/ );
1871                         $ip = User::isIP( $username );
1872                         if ( !( $user && $user->isLoggedIn() ) && !$ip ) { # User does not exist
1873                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
1874                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
1875                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1876                                 LogEventsList::showLogExtract(
1877                                         $wgOut,
1878                                         'block',
1879                                         $user->getUserPage(),
1880                                         '',
1881                                         array(
1882                                                 'lim' => 1,
1883                                                 'showIfEmpty' => false,
1884                                                 'msgKey' => array(
1885                                                         'blocked-notice-logextract',
1886                                                         $user->getName() # Support GENDER in notice
1887                                                 )
1888                                         )
1889                                 );
1890                         }
1891                 }
1892                 # Try to add a custom edit intro, or use the standard one if this is not possible.
1893                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
1894                         if ( $wgUser->isLoggedIn() ) {
1895                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
1896                         } else {
1897                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
1898                         }
1899                 }
1900                 # Give a notice if the user is editing a deleted/moved page...
1901                 if ( !$this->mTitle->exists() ) {
1902                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle,
1903                                 '', array( 'lim' => 10,
1904                                            'conds' => array( "log_action != 'revision'" ),
1905                                            'showIfEmpty' => false,
1906                                            'msgKey' => array( 'recreate-moveddeleted-warn' ) )
1907                         );
1908                 }
1909         }
1910
1911         /**
1912          * Attempt to show a custom editing introduction, if supplied
1913          *
1914          * @return bool
1915          */
1916         protected function showCustomIntro() {
1917                 if ( $this->editintro ) {
1918                         $title = Title::newFromText( $this->editintro );
1919                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
1920                                 global $wgOut;
1921                                 // Added using template syntax, to take <noinclude>'s into account.
1922                                 $wgOut->addWikiTextTitleTidy( '{{:' . $title->getFullText() . '}}', $this->mTitle );
1923                                 return true;
1924                         } else {
1925                                 return false;
1926                         }
1927                 } else {
1928                         return false;
1929                 }
1930         }
1931
1932         /**
1933          * Send the edit form and related headers to $wgOut
1934          * @param $formCallback Callback that takes an OutputPage parameter; will be called
1935          *     during form output near the top, for captchas and the like.
1936          */
1937         function showEditForm( $formCallback = null ) {
1938                 global $wgOut, $wgUser;
1939
1940                 wfProfileIn( __METHOD__ );
1941
1942                 # need to parse the preview early so that we know which templates are used,
1943                 # otherwise users with "show preview after edit box" will get a blank list
1944                 # we parse this near the beginning so that setHeaders can do the title
1945                 # setting work instead of leaving it in getPreviewText
1946                 $previewOutput = '';
1947                 if ( $this->formtype == 'preview' ) {
1948                         $previewOutput = $this->getPreviewText();
1949                 }
1950
1951                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this, &$wgOut ) );
1952
1953                 $this->setHeaders();
1954
1955                 if ( $this->showHeader() === false ) {
1956                         wfProfileOut( __METHOD__ );
1957                         return;
1958                 }
1959
1960                 $wgOut->addHTML( $this->editFormPageTop );
1961
1962                 if ( $wgUser->getOption( 'previewontop' ) ) {
1963                         $this->displayPreviewArea( $previewOutput, true );
1964                 }
1965
1966                 $wgOut->addHTML( $this->editFormTextTop );
1967
1968                 $showToolbar = true;
1969                 if ( $this->wasDeletedSinceLastEdit() ) {
1970                         if ( $this->formtype == 'save' ) {
1971                                 // Hide the toolbar and edit area, user can click preview to get it back
1972                                 // Add an confirmation checkbox and explanation.
1973                                 $showToolbar = false;
1974                         } else {
1975                                 $wgOut->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
1976                                         'deletedwhileediting' );
1977                         }
1978                 }
1979
1980                 #FIXME: add EditForm plugin interface and use it here! #FIXME: search for textarea1 and textares2, and allow EditForm to override all uses.
1981                 $wgOut->addHTML( Html::openElement( 'form', array( 'id' => 'editform', 'name' => 'editform',
1982                         'method' => 'post', 'action' => $this->getActionURL( $this->getContextTitle() ),
1983                         'enctype' => 'multipart/form-data' ) ) );
1984
1985                 if ( is_callable( $formCallback ) ) {
1986                         call_user_func_array( $formCallback, array( &$wgOut ) );
1987                 }
1988
1989                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1990
1991                 // Put these up at the top to ensure they aren't lost on early form submission
1992                 $this->showFormBeforeText();
1993
1994                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
1995                         $username = $this->lastDelete->user_name;
1996                         $comment = $this->lastDelete->log_comment;
1997
1998                         // It is better to not parse the comment at all than to have templates expanded in the middle
1999                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
2000                         $key = $comment === ''
2001                                 ? 'confirmrecreate-noreason'
2002                                 : 'confirmrecreate';
2003                         $wgOut->addHTML(
2004                                 '<div class="mw-confirm-recreate">' .
2005                                 wfMsgExt( $key, 'parseinline', $username, "<nowiki>$comment</nowiki>" ) .
2006                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
2007                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
2008                                 ) .
2009                                 '</div>'
2010                         );
2011                 }
2012
2013                 # When the summary is hidden, also hide them on preview/show changes
2014                 if( $this->nosummary ) {
2015                         $wgOut->addHTML( Html::hidden( 'nosummary', true ) );
2016                 }
2017
2018                 # If a blank edit summary was previously provided, and the appropriate
2019                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
2020                 # user being bounced back more than once in the event that a summary
2021                 # is not required.
2022                 #####
2023                 # For a bit more sophisticated detection of blank summaries, hash the
2024                 # automatic one and pass that in the hidden field wpAutoSummary.
2025                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
2026                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
2027                 }
2028
2029                 if ( $this->hasPresetSummary ) {
2030                         // If a summary has been preset using &summary= we dont want to prompt for
2031                         // a different summary. Only prompt for a summary if the summary is blanked.
2032                         // (Bug 17416)
2033                         $this->autoSumm = md5( '' );
2034                 }
2035
2036                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
2037                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
2038
2039                 $wgOut->addHTML( Html::hidden( 'oldid', $this->oldid ) );
2040
2041                 $wgOut->addHTML( Html::hidden( 'format', $this->content_format ) );
2042                 $wgOut->addHTML( Html::hidden( 'model', $this->content_model ) );
2043
2044                 if ( $this->section == 'new' ) {
2045                         $this->showSummaryInput( true, $this->summary );
2046                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
2047                 }
2048
2049                 $wgOut->addHTML( $this->editFormTextBeforeContent );
2050
2051                 if ( !$this->isCssJsSubpage && $showToolbar && $wgUser->getOption( 'showtoolbar' ) ) {
2052                         $wgOut->addHTML( EditPage::getEditToolbar() );
2053                 }
2054
2055                 if ( $this->isConflict ) {
2056                         // In an edit conflict bypass the overrideable content form method
2057                         // and fallback to the raw wpTextbox1 since editconflicts can't be
2058                         // resolved between page source edits and custom ui edits using the
2059                         // custom edit ui.
2060                         $this->textbox2 = $this->textbox1;
2061
2062                         $content = $this->getCurrentContent();
2063                         $this->textbox1 = $content->serialize( $this->content_format );
2064
2065                         $this->showTextbox1();
2066                 } else {
2067                         $this->showContentForm();
2068                 }
2069
2070                 $wgOut->addHTML( $this->editFormTextAfterContent );
2071
2072                 $wgOut->addWikiText( $this->getCopywarn() );
2073
2074                 $wgOut->addHTML( $this->editFormTextAfterWarn );
2075
2076                 $this->showStandardInputs();
2077
2078                 $this->showFormAfterText();
2079
2080                 $this->showTosSummary();
2081
2082                 $this->showEditTools();
2083
2084                 $wgOut->addHTML( $this->editFormTextAfterTools . "\n" );
2085
2086                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
2087                         Linker::formatTemplates( $this->getTemplates(), $this->preview, $this->section != '' ) ) );
2088
2089                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'hiddencats' ),
2090                         Linker::formatHiddenCategories( $this->mArticle->getHiddenCategories() ) ) );
2091
2092                 if ( $this->isConflict ) {
2093                         $this->showConflict();
2094                 }
2095
2096                 $wgOut->addHTML( $this->editFormTextBottom . "\n</form>\n" );
2097
2098                 if ( !$wgUser->getOption( 'previewontop' ) ) {
2099                         $this->displayPreviewArea( $previewOutput, false );
2100                 }
2101
2102                 wfProfileOut( __METHOD__ );
2103         }
2104
2105         /**
2106          * Extract the section title from current section text, if any.
2107          *
2108          * @param string $text
2109          * @return Mixed|string or false
2110          */
2111         public static function extractSectionTitle( $text ) {
2112                 preg_match( "/^(=+)(.+)\\1\\s*(\n|$)/i", $text, $matches );
2113                 if ( !empty( $matches[2] ) ) {
2114                         global $wgParser;
2115                         return $wgParser->stripSectionName( trim( $matches[2] ) );
2116                 } else {
2117                         return false;
2118                 }
2119         }
2120
2121         protected function showHeader() {
2122                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
2123
2124                 if ( $this->mTitle->isTalkPage() ) {
2125                         $wgOut->addWikiMsg( 'talkpagetext' );
2126                 }
2127
2128                 # Optional notices on a per-namespace and per-page basis
2129                 $editnotice_ns = 'editnotice-' . $this->mTitle->getNamespace();
2130                 $editnotice_ns_message = wfMessage( $editnotice_ns )->inContentLanguage();
2131                 if ( $editnotice_ns_message->exists() ) {
2132                         $wgOut->addWikiText( $editnotice_ns_message->plain() );
2133                 }
2134                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
2135                         $parts = explode( '/', $this->mTitle->getDBkey() );
2136                         $editnotice_base = $editnotice_ns;
2137                         while ( count( $parts ) > 0 ) {
2138                                 $editnotice_base .= '-' . array_shift( $parts );
2139                                 $editnotice_base_msg = wfMessage( $editnotice_base )->inContentLanguage();
2140                                 if ( $editnotice_base_msg->exists() ) {
2141                                         $wgOut->addWikiText( $editnotice_base_msg->plain() );
2142                                 }
2143                         }
2144                 } else {
2145                         # Even if there are no subpages in namespace, we still don't want / in MW ns.
2146                         $editnoticeText = $editnotice_ns . '-' . str_replace( '/', '-', $this->mTitle->getDBkey() );
2147                         $editnoticeMsg = wfMessage( $editnoticeText )->inContentLanguage();
2148                         if ( $editnoticeMsg->exists() ) {
2149                                 $wgOut->addWikiText( $editnoticeMsg->plain() );
2150                         }
2151                 }
2152
2153                 if ( $this->isConflict ) {
2154                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
2155                         $this->edittime = $this->mArticle->getTimestamp();
2156                 } else {
2157                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
2158                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
2159                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
2160                                 // Someone is welcome to try refactoring though
2161                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
2162                                 return false;
2163                         }
2164
2165                         if ( $this->section != '' && $this->section != 'new' ) {
2166                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
2167                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 );
2168                                         if ( $sectionTitle !== false ) {
2169                                                 $this->summary = "/* $sectionTitle */ ";
2170                                         }
2171                                 }
2172                         }
2173
2174                         if ( $this->missingComment ) {
2175                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
2176                         }
2177
2178                         if ( $this->missingSummary && $this->section != 'new' ) {
2179                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
2180                         }
2181
2182                         if ( $this->missingSummary && $this->section == 'new' ) {
2183                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
2184                         }
2185
2186                         if ( $this->hookError !== '' ) {
2187                                 $wgOut->addWikiText( $this->hookError );
2188                         }
2189
2190                         if ( !$this->checkUnicodeCompliantBrowser() ) {
2191                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
2192                         }
2193
2194                         if ( $this->section != 'new' ) {
2195                                 $revision = $this->mArticle->getRevisionFetched();
2196                                 if ( $revision ) {
2197                                         // Let sysop know that this will make private content public if saved
2198
2199                                         if ( !$revision->userCan( Revision::DELETED_TEXT ) ) {
2200                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
2201                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
2202                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
2203                                         }
2204
2205                                         if ( !$revision->isCurrent() ) {
2206                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
2207                                                 $wgOut->addWikiMsg( 'editingold' );
2208                                         }
2209                                 } elseif ( $this->mTitle->exists() ) {
2210                                         // Something went wrong
2211
2212                                         $wgOut->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
2213                                                 array( 'missing-article', $this->mTitle->getPrefixedText(),
2214                                                 wfMsgNoTrans( 'missingarticle-rev', $this->oldid ) ) );
2215                                 }
2216                         }
2217                 }
2218
2219                 if ( wfReadOnly() ) {
2220                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
2221                 } elseif ( $wgUser->isAnon() ) {
2222                         if ( $this->formtype != 'preview' ) {
2223                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
2224                         } else {
2225                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
2226                         }
2227                 } else {
2228                         if ( $this->isCssJsSubpage ) {
2229                                 # Check the skin exists
2230                                 if ( $this->isWrongCaseCssJsPage ) {
2231                                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>", array( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
2232                                 }
2233                                 if ( $this->formtype !== 'preview' ) {
2234                                         if ( $this->isCssSubpage )
2235                                                 $wgOut->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
2236                                         if ( $this->isJsSubpage )
2237                                                 $wgOut->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
2238                                 }
2239                         }
2240                 }
2241
2242                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2243                         # Is the title semi-protected?
2244                         if ( $this->mTitle->isSemiProtected() ) {
2245                                 $noticeMsg = 'semiprotectedpagewarning';
2246                         } else {
2247                                 # Then it must be protected based on static groups (regular)
2248                                 $noticeMsg = 'protectedpagewarning';
2249                         }
2250                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2251                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
2252                 }
2253                 if ( $this->mTitle->isCascadeProtected() ) {
2254                         # Is this page under cascading protection from some source pages?
2255                         list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
2256                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
2257                         $cascadeSourcesCount = count( $cascadeSources );
2258                         if ( $cascadeSourcesCount > 0 ) {
2259                                 # Explain, and list the titles responsible
2260                                 foreach ( $cascadeSources as $page ) {
2261                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
2262                                 }
2263                         }
2264                         $notice .= '</div>';
2265                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
2266                 }
2267                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
2268                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2269                                 array( 'lim' => 1,
2270                                         'showIfEmpty' => false,
2271                                         'msgKey' => array( 'titleprotectedwarning' ),
2272                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
2273                 }
2274
2275                 if ( $this->kblength === false ) {
2276                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
2277                 }
2278
2279                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
2280                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
2281                                 array( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) ) );
2282                 } else {
2283                         if ( !wfMessage( 'longpage-hint' )->isDisabled() ) {
2284                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
2285                                         array( 'longpage-hint', $wgLang->formatSize( strlen( $this->textbox1 ) ), strlen( $this->textbox1 ) )
2286                                 );
2287                         }
2288                 }
2289         }
2290
2291         /**
2292          * Standard summary input and label (wgSummary), abstracted so EditPage
2293          * subclasses may reorganize the form.
2294          * Note that you do not need to worry about the label's for=, it will be
2295          * inferred by the id given to the input. You can remove them both by
2296          * passing array( 'id' => false ) to $userInputAttrs.
2297          *
2298          * @param $summary string The value of the summary input
2299          * @param $labelText string The html to place inside the label
2300          * @param $inputAttrs array of attrs to use on the input
2301          * @param $spanLabelAttrs array of attrs to use on the span inside the label
2302          *
2303          * @return array An array in the format array( $label, $input )
2304          */
2305         function getSummaryInput( $summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null ) {
2306                 // Note: the maxlength is overriden in JS to 250 and to make it use UTF-8 bytes, not characters.
2307                 $inputAttrs = ( is_array( $inputAttrs ) ? $inputAttrs : array() ) + array(
2308                         'id' => 'wpSummary',
2309                         'maxlength' => '200',
2310                         'tabindex' => '1',
2311                         'size' => 60,
2312                         'spellcheck' => 'true',
2313                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
2314
2315                 $spanLabelAttrs = ( is_array( $spanLabelAttrs ) ? $spanLabelAttrs : array() ) + array(
2316                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
2317                         'id' => "wpSummaryLabel"
2318                 );
2319
2320                 $label = null;
2321                 if ( $labelText ) {
2322                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
2323                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
2324                 }
2325
2326                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
2327
2328                 return array( $label, $input );
2329         }
2330
2331         /**
2332          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2333          *                          up top, or false if this is the comment summary
2334          *                          down below the textarea
2335          * @param $summary String: The text of the summary to display
2336          * @return String
2337          */
2338         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
2339                 global $wgOut, $wgContLang;
2340                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
2341                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
2342                 if ( $isSubjectPreview ) {
2343                         if ( $this->nosummary ) {
2344                                 return;
2345                         }
2346                 } else {
2347                         if ( !$this->mShowSummaryField ) {
2348                                 return;
2349                         }
2350                 }
2351                 $summary = $wgContLang->recodeForEdit( $summary );
2352                 $labelText = wfMsgExt( $isSubjectPreview ? 'subject' : 'summary', 'parseinline' );
2353                 list( $label, $input ) = $this->getSummaryInput( $summary, $labelText, array( 'class' => $summaryClass ), array() );
2354                 $wgOut->addHTML( "{$label} {$input}" );
2355         }
2356
2357         /**
2358          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2359          *                          up top, or false if this is the comment summary
2360          *                          down below the textarea
2361          * @param $summary String: the text of the summary to display
2362          * @return String
2363          */
2364         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
2365                 if ( !$summary || ( !$this->preview && !$this->diff ) )
2366                         return "";
2367
2368                 global $wgParser;
2369
2370                 if ( $isSubjectPreview )
2371                         $summary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $summary ) );
2372
2373                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
2374
2375                 $summary = wfMsgExt( $message, 'parseinline' ) . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
2376                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
2377         }
2378
2379         protected function showFormBeforeText() {
2380                 global $wgOut;
2381                 $section = htmlspecialchars( $this->section );
2382                 $wgOut->addHTML( <<<HTML
2383 <input type='hidden' value="{$section}" name="wpSection" />
2384 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
2385 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
2386 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
2387
2388 HTML
2389                 );
2390                 if ( !$this->checkUnicodeCompliantBrowser() )
2391                         $wgOut->addHTML( Html::hidden( 'safemode', '1' ) );
2392         }
2393
2394         protected function showFormAfterText() {
2395                 global $wgOut, $wgUser;
2396                 /**
2397                  * To make it harder for someone to slip a user a page
2398                  * which submits an edit form to the wiki without their
2399                  * knowledge, a random token is associated with the login
2400                  * session. If it's not passed back with the submission,
2401                  * we won't save the page, or render user JavaScript and
2402                  * CSS previews.
2403                  *
2404                  * For anon editors, who may not have a session, we just
2405                  * include the constant suffix to prevent editing from
2406                  * broken text-mangling proxies.
2407                  */
2408                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->getEditToken() ) . "\n" );
2409         }
2410
2411         /**
2412          * Subpage overridable method for printing the form for page content editing
2413          * By default this simply outputs wpTextbox1
2414          * Subclasses can override this to provide a custom UI for editing;
2415          * be it a form, or simply wpTextbox1 with a modified content that will be
2416          * reverse modified when extracted from the post data.
2417          * Note that this is basically the inverse for importContentFormData
2418          */
2419         protected function showContentForm() {
2420                 $this->showTextbox1();
2421         }
2422
2423         /**
2424          * Method to output wpTextbox1
2425          * The $textoverride method can be used by subclasses overriding showContentForm
2426          * to pass back to this method.
2427          *
2428          * @param $customAttribs array of html attributes to use in the textarea
2429          * @param $textoverride String: optional text to override $this->textarea1 with
2430          */
2431         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
2432                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
2433                         $attribs = array( 'style' => 'display:none;' );
2434                 } else {
2435                         $classes = array(); // Textarea CSS
2436                         if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2437                                 # Is the title semi-protected?
2438                                 if ( $this->mTitle->isSemiProtected() ) {
2439                                         $classes[] = 'mw-textarea-sprotected';
2440                                 } else {
2441                                         # Then it must be protected based on static groups (regular)
2442                                         $classes[] = 'mw-textarea-protected';
2443                                 }
2444                                 # Is the title cascade-protected?
2445                                 if ( $this->mTitle->isCascadeProtected() ) {
2446                                         $classes[] = 'mw-textarea-cprotected';
2447                                 }
2448                         }
2449
2450                         $attribs = array( 'tabindex' => 1 );
2451
2452                         if ( is_array( $customAttribs ) ) {
2453                                 $attribs += $customAttribs;
2454                         }
2455
2456                         if ( count( $classes ) ) {
2457                                 if ( isset( $attribs['class'] ) ) {
2458                                         $classes[] = $attribs['class'];
2459                                 }
2460                                 $attribs['class'] = implode( ' ', $classes );
2461                         }
2462                 }
2463
2464                 $this->showTextbox( $textoverride !== null ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
2465         }
2466
2467         protected function showTextbox2() {
2468                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
2469         }
2470
2471         protected function showTextbox( $text, $name, $customAttribs = array() ) {
2472                 global $wgOut, $wgUser;
2473
2474                 $wikitext = $this->safeUnicodeOutput( $content );
2475                 if ( strval( $wikitext ) !== '' ) {
2476                         // Ensure there's a newline at the end, otherwise adding lines
2477                         // is awkward.
2478                         // But don't add a newline if the ext is empty, or Firefox in XHTML
2479                         // mode will show an extra newline. A bit annoying.
2480                         $wikitext .= "\n";
2481                 }
2482
2483                 $attribs = $customAttribs + array(
2484                         'accesskey' => ',',
2485                         'id'   => $name,
2486                         'cols' => $wgUser->getIntOption( 'cols' ),
2487                         'rows' => $wgUser->getIntOption( 'rows' ),
2488                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
2489                 );
2490
2491                 $pageLang = $this->mTitle->getPageLanguage();
2492                 $attribs['lang'] = $pageLang->getCode();
2493                 $attribs['dir'] = $pageLang->getDir();
2494
2495                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
2496         }
2497
2498         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
2499                 global $wgOut;
2500                 $classes = array();
2501                 if ( $isOnTop )
2502                         $classes[] = 'ontop';
2503
2504                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
2505
2506                 if ( $this->formtype != 'preview' )
2507                         $attribs['style'] = 'display: none;';
2508
2509                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
2510
2511                 if ( $this->formtype == 'preview' ) {
2512                         $this->showPreview( $previewOutput );
2513                 }
2514
2515                 $wgOut->addHTML( '</div>' );
2516
2517                 if ( $this->formtype == 'diff' ) {
2518                         $this->showDiff();
2519                 }
2520         }
2521
2522         /**
2523          * Append preview output to $wgOut.
2524          * Includes category rendering if this is a category page.
2525          *
2526          * @param $text String: the HTML to be output for the preview.
2527          */
2528         protected function showPreview( $text ) {
2529                 global $wgOut;
2530                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2531                         $this->mArticle->openShowCategory();
2532                 }
2533                 # This hook seems slightly odd here, but makes things more
2534                 # consistent for extensions.
2535                 wfRunHooks( 'OutputPageBeforeHTML', array( &$wgOut, &$text ) );
2536                 $wgOut->addHTML( $text );
2537                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2538                         $this->mArticle->closeShowCategory();
2539                 }
2540         }
2541
2542         /**
2543          * Get a diff between the current contents of the edit box and the
2544          * version of the page we're editing from.
2545          *
2546          * If this is a section edit, we'll replace the section as for final
2547          * save and then make a comparison.
2548          */
2549         function showDiff() {
2550                 global $wgUser, $wgContLang, $wgOut;
2551
2552                 $oldContent = $this->getOriginalContent();
2553
2554                 $textboxContent = ContentHandler::makeContent( $this->textbox1, $this->getTitle(),
2555                                                                                                                 $this->content_model, $this->content_format ); #XXX: handle parse errors ?
2556
2557                 $newContent = $this->mArticle->replaceSectionContent(
2558                                                                                         $this->section, $textboxContent,
2559                                                                                         $this->summary, $this->edittime );
2560                 $oldtitlemsg = 'currentrev';
2561                 # if message does not exist, show diff against the preloaded default
2562                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI && !$this->mTitle->exists() ) {
2563                         $oldtext = $this->mTitle->getDefaultMessageText();
2564                         if( $oldtext !== false ) {
2565                                 $oldtitlemsg = 'defaultmessagetext';
2566                         }
2567                 } else {
2568                         $oldtext = $this->mArticle->getRawText();
2569                 }
2570                 $newtext = $this->mArticle->replaceSection(
2571                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2572
2573                 # hanlde legacy text-based hook
2574                 $newtext_orig = $newContent->serialize( $this->content_format );
2575                 $newtext = $newtext_orig; #clone
2576                 wfRunHooks( 'EditPageGetDiffText', array( $this, &$newtext ) );
2577
2578                 if ( $newtext != $newtext_orig ) {
2579                         #if the hook changed the text, create a new Content object accordingly.
2580                         $newContent = ContentHandler::makeContent( $newtext, $this->getTitle(), $newContent->getModelName() ); #XXX: handle parse errors ?
2581                 }
2582
2583                 wfRunHooks( 'EditPageGetDiffContent', array( $this, &$newContent ) ); #FIXME: document new hook
2584
2585                 $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
2586                 $newContent = $newContent->preSaveTransform( $this->mTitle, $wgUser, $popts );
2587
2588                 if ( ( $oldContent && !$oldContent->isEmpty() ) || ( $newContent && !$newContent->isEmpty() ) ) {
2589                         $oldtitle = wfMsgExt( 'currentrev', array( 'parseinline' ) );
2590                 if ( $oldtext !== false  || $newtext != '' ) {
2591                         $oldtitle = wfMsgExt( $oldtitlemsg, array( 'parseinline' ) );
2592                         $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2593
2594                         $de = $oldContent->getContentHandler()->getDifferenceEngine( $this->mArticle->getContext() );
2595                         $de->setContent( $oldContent, $newContent );
2596
2597                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2598                         $de->showDiffStyle();
2599                 } else {
2600                         $difftext = '';
2601                 }
2602
2603                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2604         }
2605
2606         /**
2607          * Give a chance for site and per-namespace customizations of
2608          * terms of service summary link that might exist separately
2609          * from the copyright notice.
2610          *
2611          * This will display between the save button and the edit tools,
2612          * so should remain short!
2613          */
2614         protected function showTosSummary() {
2615                 $msg = 'editpage-tos-summary';
2616                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
2617                 if ( !wfMessage( $msg )->isDisabled() ) {
2618                         global $wgOut;
2619                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
2620                         $wgOut->addWikiMsg( $msg );
2621                         $wgOut->addHTML( '</div>' );
2622                 }
2623         }
2624
2625         protected function showEditTools() {
2626                 global $wgOut;
2627                 $wgOut->addHTML( '<div class="mw-editTools">' .
2628                         wfMessage( 'edittools' )->inContentLanguage()->parse() .
2629                         '</div>' );
2630         }
2631
2632         protected function getCopywarn() {
2633                 global $wgRightsText;
2634                 if ( $wgRightsText ) {
2635                         $copywarnMsg = array( 'copyrightwarning',
2636                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
2637                                 $wgRightsText );
2638                 } else {
2639                         $copywarnMsg = array( 'copyrightwarning2',
2640                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
2641                 }
2642                 // Allow for site and per-namespace customization of contribution/copyright notice.
2643                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
2644
2645                 return "<div id=\"editpage-copywarn\">\n" .
2646                         call_user_func_array( "wfMsgNoTrans", $copywarnMsg ) . "\n</div>";
2647         }
2648
2649         protected function showStandardInputs( &$tabindex = 2 ) {
2650                 global $wgOut;
2651                 $wgOut->addHTML( "<div class='editOptions'>\n" );
2652
2653                 if ( $this->section != 'new' ) {
2654                         $this->showSummaryInput( false, $this->summary );
2655                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
2656                 }
2657
2658                 $checkboxes = $this->getCheckboxes( $tabindex,
2659                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
2660                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
2661                 $wgOut->addHTML( "<div class='editButtons'>\n" );
2662                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
2663
2664                 $cancel = $this->getCancelLink();
2665                 if ( $cancel !== '' ) {
2666                         $cancel .= wfMsgExt( 'pipe-separator' , 'escapenoentities' );
2667                 }
2668                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
2669                 $edithelp = '<a target="helpwindow" href="' . $edithelpurl . '">' .
2670                         htmlspecialchars( wfMsg( 'edithelp' ) ) . '</a> ' .
2671                         htmlspecialchars( wfMsg( 'newwindow' ) );
2672                 $wgOut->addHTML( "      <span class='editHelp'>{$cancel}{$edithelp}</span>\n" );
2673                 $wgOut->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
2674         }
2675
2676         /**
2677          * Show an edit conflict. textbox1 is already shown in showEditForm().
2678          * If you want to use another entry point to this function, be careful.
2679          */
2680         protected function showConflict() {
2681                 global $wgOut;
2682
2683                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
2684                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2685
2686                         $content1 = ContentHandler::makeContent( $this->textbox1, $this->getTitle(), $this->content_model, $this->content_format ); #XXX: handle parse errors?
2687                         $content2 = ContentHandler::makeContent( $this->textbox2, $this->getTitle(), $this->content_model, $this->content_format ); #XXX: handle parse errors?
2688
2689                         $handler = ContentHandler::getForModelName( $this->content_model );
2690                         $de = $handler->getDifferenceEngine( $this->mArticle->getContext() );
2691                         $de->setContent( $content2, $content1 );
2692                         $de->showDiff( wfMsgExt( 'yourtext', 'parseinline' ), wfMsg( 'storedversion' ) );
2693
2694                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2695                         $this->showTextbox2();
2696                 }
2697         }
2698
2699         /**
2700          * @return string
2701          */
2702         public function getCancelLink() {
2703                 $cancelParams = array();
2704                 if ( !$this->isConflict && $this->oldid > 0 ) {
2705                         $cancelParams['oldid'] = $this->oldid;
2706                 }
2707
2708                 return Linker::linkKnown(
2709                         $this->getContextTitle(),
2710                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
2711                         array( 'id' => 'mw-editform-cancel' ),
2712                         $cancelParams
2713                 );
2714         }
2715
2716         /**
2717          * Returns the URL to use in the form's action attribute.
2718          * This is used by EditPage subclasses when simply customizing the action
2719          * variable in the constructor is not enough. This can be used when the
2720          * EditPage lives inside of a Special page rather than a custom page action.
2721          *
2722          * @param $title Title object for which is being edited (where we go to for &action= links)
2723          * @return string
2724          */
2725         protected function getActionURL( Title $title ) {
2726                 return $title->getLocalURL( array( 'action' => $this->action ) );
2727         }
2728
2729         /**
2730          * Check if a page was deleted while the user was editing it, before submit.
2731          * Note that we rely on the logging table, which hasn't been always there,
2732          * but that doesn't matter, because this only applies to brand new
2733          * deletes.
2734          */
2735         protected function wasDeletedSinceLastEdit() {
2736                 if ( $this->deletedSinceEdit !== null ) {
2737                         return $this->deletedSinceEdit;
2738                 }
2739
2740                 $this->deletedSinceEdit = false;
2741
2742                 if ( $this->mTitle->isDeletedQuick() ) {
2743                         $this->lastDelete = $this->getLastDelete();
2744                         if ( $this->lastDelete ) {
2745                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
2746                                 if ( $deleteTime > $this->starttime ) {
2747                                         $this->deletedSinceEdit = true;
2748                                 }
2749                         }
2750                 }
2751
2752                 return $this->deletedSinceEdit;
2753         }
2754
2755         protected function getLastDelete() {
2756                 $dbr = wfGetDB( DB_SLAVE );
2757                 $data = $dbr->selectRow(
2758                         array( 'logging', 'user' ),
2759                         array( 'log_type',
2760                                    'log_action',
2761                                    'log_timestamp',
2762                                    'log_user',
2763                                    'log_namespace',
2764                                    'log_title',
2765                                    'log_comment',
2766                                    'log_params',
2767                                    'log_deleted',
2768                                    'user_name' ),
2769                         array( 'log_namespace' => $this->mTitle->getNamespace(),
2770                                    'log_title' => $this->mTitle->getDBkey(),
2771                                    'log_type' => 'delete',
2772                                    'log_action' => 'delete',
2773                                    'user_id=log_user' ),
2774                         __METHOD__,
2775                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
2776                 );
2777                 // Quick paranoid permission checks...
2778                 if ( is_object( $data ) ) {
2779                         if ( $data->log_deleted & LogPage::DELETED_USER )
2780                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
2781                         if ( $data->log_deleted & LogPage::DELETED_COMMENT )
2782                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
2783                 }
2784                 return $data;
2785         }
2786
2787         /**
2788          * Get the rendered text for previewing.
2789          * @return string
2790          */
2791         function getPreviewText() {
2792                 global $wgOut, $wgUser, $wgParser, $wgRawHtml;
2793
2794                 wfProfileIn( __METHOD__ );
2795
2796                 if ( $wgRawHtml && !$this->mTokenOk ) {
2797                         // Could be an offsite preview attempt. This is very unsafe if
2798                         // HTML is enabled, as it could be an attack.
2799                         $parsedNote = '';
2800                         if ( $this->textbox1 !== '' ) {
2801                                 // Do not put big scary notice, if previewing the empty
2802                                 // string, which happens when you initially edit
2803                                 // a category page, due to automatic preview-on-open.
2804                                 $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
2805                                         wfMsg( 'session_fail_preview_html' ) . "</div>", true, /* interface */true );
2806                         }
2807                         wfProfileOut( __METHOD__ );
2808                         return $parsedNote;
2809                 }
2810
2811         try {
2812             $content = ContentHandler::makeContent( $this->textbox1, $this->getTitle(), $this->content_model, $this->content_format );
2813
2814             if ( $this->mTriedSave && !$this->mTokenOk ) {
2815                 if ( $this->mTokenOkExceptSuffix ) {
2816                     $note = wfMsg( 'token_suffix_mismatch' );
2817                 } else {
2818                     $note = wfMsg( 'session_fail_preview' );
2819                 }
2820             } elseif ( $this->incompleteForm ) {
2821                 $note = wfMsg( 'edit_form_incomplete' );
2822             } elseif ( $this->isCssJsSubpage || $this->mTitle->isCssOrJsPage() ) {
2823                 # if this is a CSS or JS page used in the UI, show a special notice
2824                 # 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?
2825
2826                 if( $this->mTitle->isCssJsSubpage() ) {
2827                     $level = 'user';
2828                 } elseif( $this->mTitle->isCssOrJsPage() ) {
2829                     $level = 'site';
2830                 } else {
2831                     $level = false;
2832                 }
2833
2834                 if ( $content->getModelName() == CONTENT_MODEL_CSS ) {
2835                     $format = 'css';
2836                 } elseif ( $content->getModelName() == CONTENT_MODEL_JAVASCRIPT ) {
2837                     $format = 'js';
2838                 } else {
2839                     $format = false;
2840                 }
2841
2842                 # Used messages to make sure grep find them:
2843                 # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
2844                 if( $level && $format ) {
2845                     $note = "<div id='mw-{$level}{$format}preview'>" . wfMsg( "{$level}{$format}preview" ) . "</div>";
2846                 } else {
2847                     $note = wfMsg( 'previewnote' );
2848                 }
2849             } else {
2850                 $note = wfMsg( 'previewnote' );
2851             }
2852
2853             $parserOptions = ParserOptions::newFromUser( $wgUser );
2854             $parserOptions->setEditSection( false );
2855             $parserOptions->setTidy( true );
2856             $parserOptions->setIsPreview( true );
2857             $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
2858
2859             $rt = $content->getRedirectChain();
2860
2861             if ( $rt ) {
2862                 $previewHTML = $this->mArticle->viewRedirect( $rt, false );
2863             } else {
2864
2865                 # If we're adding a comment, we need to show the
2866                 # summary as the headline
2867                 if ( $this->section == "new" && $this->summary != "" ) {
2868                     $content = $content->addSectionHeader( $this->summary );
2869                 }
2870
2871                 $toparse_orig = $content->serialize( $this->content_format );
2872                 $toparse = $toparse_orig;
2873                 wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
2874
2875                 if ( $toparse !== $toparse_orig ) {
2876                     #hook changed the text, create new Content object
2877                     $content = ContentHandler::makeContent( $toparse, $this->getTitle(), $this->content_model, $this->content_format );
2878                 }
2879
2880                 wfRunHooks( 'EditPageGetPreviewContent', array( $this, &$content ) ); # FIXME: document new hook
2881
2882                 $parserOptions->enableLimitReport();
2883
2884                 #XXX: For CSS/JS pages, we should have called the ShowRawCssJs hook here. But it's now deprecated, so never mind
2885                 $content = $content->preSaveTransform( $this->mTitle, $wgUser, $parserOptions );
2886                 $parserOutput = $content->getParserOutput( $this->mTitle, null, $parserOptions );
2887
2888                 $previewHTML = $parserOutput->getText();
2889                 $this->mParserOutput = $parserOutput;
2890                 $wgOut->addParserOutputNoText( $parserOutput );
2891
2892                 if ( count( $parserOutput->getWarnings() ) ) {
2893                     $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
2894                 }
2895             }
2896         } catch (MWContentSerializationException $ex) {
2897             $note .= "\n\n" . wfMsg('content-failed-to-parse', $this->content_model, $this->content_format, $ex->getMessage() );
2898             $previewHTML = '';
2899         }
2900                 if ( $this->mTriedSave && !$this->mTokenOk ) {
2901                         if ( $this->mTokenOkExceptSuffix ) {
2902                                 $note = wfMsg( 'token_suffix_mismatch' );
2903                         } else {
2904                                 $note = wfMsg( 'session_fail_preview' );
2905                         }
2906                 } elseif ( $this->incompleteForm ) {
2907                         $note = wfMsg( 'edit_form_incomplete' );
2908                 } else {
2909                         $note = wfMsg( 'previewnote' );
2910                 }
2911
2912                 $parserOptions = ParserOptions::newFromUser( $wgUser );
2913                 $parserOptions->setEditSection( false );
2914                 $parserOptions->setTidy( true );
2915                 $parserOptions->setIsPreview( true );
2916                 $parserOptions->setIsSectionPreview( !is_null( $this->section ) && $this->section !== '' );
2917
2918                 # don't parse non-wikitext pages, show message about preview
2919                 # 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?
2920
2921                 if ( $this->isCssJsSubpage || !$this->mTitle->isWikitextPage() ) {
2922                         if ( $this->mTitle->isCssJsSubpage() ) {
2923                                 $level = 'user';
2924                         } elseif ( $this->mTitle->isCssOrJsPage() ) {
2925                                 $level = 'site';
2926                         } else {
2927                                 $level = false;
2928                         }
2929
2930                         # Used messages to make sure grep find them:
2931                         # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
2932                         if ( $level ) {
2933                                 if ( preg_match( "/\\.css$/", $this->mTitle->getText() ) ) {
2934                                         $previewtext = "<div id='mw-{$level}csspreview'>\n" . wfMsg( "{$level}csspreview" ) . "\n</div>";
2935                                         $class = "mw-code mw-css";
2936                                 } elseif ( preg_match( "/\\.js$/", $this->mTitle->getText() ) ) {
2937                                         $previewtext = "<div id='mw-{$level}jspreview'>\n" . wfMsg( "{$level}jspreview" ) . "\n</div>";
2938                                         $class = "mw-code mw-js";
2939                                 } else {
2940                                         throw new MWException( 'A CSS/JS (sub)page but which is not css nor js!' );
2941                                 }
2942                         }
2943
2944                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
2945                         $previewHTML = $parserOutput->mText;
2946                         $previewHTML .= "<pre class=\"$class\" dir=\"ltr\">\n" . htmlspecialchars( $this->textbox1 ) . "\n</pre>\n";
2947                 } else {
2948                         $toparse = $this->textbox1;
2949
2950                         # If we're adding a comment, we need to show the
2951                         # summary as the headline
2952                         if ( $this->section == "new" && $this->summary != "" ) {
2953                                 $toparse = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $toparse;
2954                         }
2955
2956                         wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
2957
2958                         $parserOptions->enableLimitReport();
2959
2960                         $toparse = $wgParser->preSaveTransform( $toparse, $this->mTitle, $wgUser, $parserOptions );
2961                         $parserOutput = $wgParser->parse( $toparse, $this->mTitle, $parserOptions );
2962
2963                         $rt = Title::newFromRedirectArray( $this->textbox1 );
2964                         if ( $rt ) {
2965                                 $previewHTML = $this->mArticle->viewRedirect( $rt, false );
2966                         } else {
2967                                 $previewHTML = $parserOutput->getText();
2968                         }
2969
2970                         $this->mParserOutput = $parserOutput;
2971                         $wgOut->addParserOutputNoText( $parserOutput );
2972
2973                         if ( count( $parserOutput->getWarnings() ) ) {
2974                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
2975                         }
2976                 }
2977
2978                 if ( $this->isConflict ) {
2979                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
2980                 } else {
2981                         $conflict = '<hr />';
2982                 }
2983
2984                 $previewhead = "<div class='previewnote'>\n" .
2985                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
2986                         $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
2987
2988                 $pageLang = $this->mTitle->getPageLanguage();
2989                 $attribs = array( 'lang' => $pageLang->getCode(), 'dir' => $pageLang->getDir(),
2990                         'class' => 'mw-content-' . $pageLang->getDir() );
2991                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
2992
2993                 wfProfileOut( __METHOD__ );
2994                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
2995         }
2996
2997         /**
2998          * @return Array
2999          */
3000         function getTemplates() {
3001                 if ( $this->preview || $this->section != '' ) {
3002                         $templates = array();
3003                         if ( !isset( $this->mParserOutput ) ) {
3004                                 return $templates;
3005                         }
3006                         foreach ( $this->mParserOutput->getTemplates() as $ns => $template ) {
3007                                 foreach ( array_keys( $template ) as $dbk ) {
3008                                         $templates[] = Title::makeTitle( $ns, $dbk );
3009                                 }
3010                         }
3011                         return $templates;
3012                 } else {
3013                         return $this->mTitle->getTemplateLinksFrom();
3014                 }
3015         }
3016
3017         /**
3018          * Shows a bulletin board style toolbar for common editing functions.
3019          * It can be disabled in the user preferences.
3020          * The necessary JavaScript code can be found in skins/common/edit.js.
3021          *
3022          * @return string
3023          */
3024         static function getEditToolbar() {
3025                 global $wgStylePath, $wgContLang, $wgLang, $wgOut;
3026                 global $wgUseTeX, $wgEnableUploads, $wgForeignFileRepos;
3027
3028                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
3029
3030                 /**
3031                  * $toolarray is an array of arrays each of which includes the
3032                  * filename of the button image (without path), the opening
3033                  * tag, the closing tag, optionally a sample text that is
3034                  * inserted between the two when no selection is highlighted
3035                  * and.  The tip text is shown when the user moves the mouse
3036                  * over the button.
3037                  *
3038                  * Also here: accesskeys (key), which are not used yet until
3039                  * someone can figure out a way to make them work in
3040                  * IE. However, we should make sure these keys are not defined
3041                  * on the edit page.
3042                  */
3043                 $toolarray = array(
3044                         array(
3045                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
3046                                 'id'     => 'mw-editbutton-bold',
3047                                 'open'   => '\'\'\'',
3048                                 'close'  => '\'\'\'',
3049                                 'sample' => wfMsg( 'bold_sample' ),
3050                                 'tip'    => wfMsg( 'bold_tip' ),
3051                                 'key'    => 'B'
3052                         ),
3053                         array(
3054                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
3055                                 'id'     => 'mw-editbutton-italic',
3056                                 'open'   => '\'\'',
3057                                 'close'  => '\'\'',
3058                                 'sample' => wfMsg( 'italic_sample' ),
3059                                 'tip'    => wfMsg( 'italic_tip' ),
3060                                 'key'    => 'I'
3061                         ),
3062                         array(
3063                                 'image'  => $wgLang->getImageFile( 'button-link' ),
3064                                 'id'     => 'mw-editbutton-link',
3065                                 'open'   => '[[',
3066                                 'close'  => ']]',
3067                                 'sample' => wfMsg( 'link_sample' ),
3068                                 'tip'    => wfMsg( 'link_tip' ),
3069                                 'key'    => 'L'
3070                         ),
3071                         array(
3072                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
3073                                 'id'     => 'mw-editbutton-extlink',
3074                                 'open'   => '[',
3075                                 'close'  => ']',
3076                                 'sample' => wfMsg( 'extlink_sample' ),
3077                                 'tip'    => wfMsg( 'extlink_tip' ),
3078                                 'key'    => 'X'
3079                         ),
3080                         array(
3081                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
3082                                 'id'     => 'mw-editbutton-headline',
3083                                 'open'   => "\n== ",
3084                                 'close'  => " ==\n",
3085                                 'sample' => wfMsg( 'headline_sample' ),
3086                                 'tip'    => wfMsg( 'headline_tip' ),
3087                                 'key'    => 'H'
3088                         ),
3089                         $imagesAvailable ? array(
3090                                 'image'  => $wgLang->getImageFile( 'button-image' ),
3091                                 'id'     => 'mw-editbutton-image',
3092                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
3093                                 'close'  => ']]',
3094                                 'sample' => wfMsg( 'image_sample' ),
3095                                 'tip'    => wfMsg( 'image_tip' ),
3096                                 'key'    => 'D',
3097                         ) : false,
3098                         $imagesAvailable ? array(
3099                                 'image'  => $wgLang->getImageFile( 'button-media' ),
3100                                 'id'     => 'mw-editbutton-media',
3101                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
3102                                 'close'  => ']]',
3103                                 'sample' => wfMsg( 'media_sample' ),
3104                                 'tip'    => wfMsg( 'media_tip' ),
3105                                 'key'    => 'M'
3106                         ) : false,
3107                         $wgUseTeX ? array(
3108                                 'image'  => $wgLang->getImageFile( 'button-math' ),
3109                                 'id'     => 'mw-editbutton-math',
3110                                 'open'   => "<math>",
3111                                 'close'  => "</math>",
3112                                 'sample' => wfMsg( 'math_sample' ),
3113                                 'tip'    => wfMsg( 'math_tip' ),
3114                                 'key'    => 'C'
3115                         ) : false,
3116                         array(
3117                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
3118                                 'id'     => 'mw-editbutton-nowiki',
3119                                 'open'   => "<nowiki>",
3120                                 'close'  => "</nowiki>",
3121                                 'sample' => wfMsg( 'nowiki_sample' ),
3122                                 'tip'    => wfMsg( 'nowiki_tip' ),
3123                                 'key'    => 'N'
3124                         ),
3125                         array(
3126                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
3127                                 'id'     => 'mw-editbutton-signature',
3128                                 'open'   => '--~~~~',
3129                                 'close'  => '',
3130                                 'sample' => '',
3131                                 'tip'    => wfMsg( 'sig_tip' ),
3132                                 'key'    => 'Y'
3133                         ),
3134                         array(
3135                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
3136                                 'id'     => 'mw-editbutton-hr',
3137                                 'open'   => "\n----\n",
3138                                 'close'  => '',
3139                                 'sample' => '',
3140                                 'tip'    => wfMsg( 'hr_tip' ),
3141                                 'key'    => 'R'
3142                         )
3143                 );
3144
3145                 $script = 'mw.loader.using("mediawiki.action.edit", function() {';
3146                 foreach ( $toolarray as $tool ) {
3147                         if ( !$tool ) {
3148                                 continue;
3149                         }
3150
3151                         $params = array(
3152                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
3153                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
3154                                 // Older browsers show a "speedtip" type message only for ALT.
3155                                 // Ideally these should be different, realistically they
3156                                 // probably don't need to be.
3157                                 $tip = $tool['tip'],
3158                                 $open = $tool['open'],
3159                                 $close = $tool['close'],
3160                                 $sample = $tool['sample'],
3161                                 $cssId = $tool['id'],
3162                         );
3163
3164                         $script .= Xml::encodeJsCall( 'mw.toolbar.addButton', $params );
3165                 }
3166
3167                 // This used to be called on DOMReady from mediawiki.action.edit, which
3168                 // ended up causing race conditions with the setup code above.
3169                 $script .= "\n" .
3170                         "// Create button bar\n" .
3171                         "$(function() { mw.toolbar.init(); } );\n";
3172
3173                 $script .= '});';
3174                 $wgOut->addScript( Html::inlineScript( ResourceLoader::makeLoaderConditionalScript( $script ) ) );
3175
3176                 $toolbar = '<div id="toolbar"></div>';
3177
3178                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
3179
3180                 return $toolbar;
3181         }
3182
3183         /**
3184          * Returns an array of html code of the following checkboxes:
3185          * minor and watch
3186          *
3187          * @param $tabindex int Current tabindex
3188          * @param $checked Array of checkbox => bool, where bool indicates the checked
3189          *                 status of the checkbox
3190          *
3191          * @return array
3192          */
3193         public function getCheckboxes( &$tabindex, $checked ) {
3194                 global $wgUser;
3195
3196                 $checkboxes = array();
3197
3198                 // don't show the minor edit checkbox if it's a new page or section
3199                 if ( !$this->isNew ) {
3200                         $checkboxes['minor'] = '';
3201                         $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
3202                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
3203                                 $attribs = array(
3204                                         'tabindex'  => ++$tabindex,
3205                                         'accesskey' => wfMsg( 'accesskey-minoredit' ),
3206                                         'id'        => 'wpMinoredit',
3207                                 );
3208                                 $checkboxes['minor'] =
3209                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
3210                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
3211                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
3212                                         ">{$minorLabel}</label>";
3213                         }
3214                 }
3215
3216                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
3217                 $checkboxes['watch'] = '';
3218                 if ( $wgUser->isLoggedIn() ) {
3219                         $attribs = array(
3220                                 'tabindex'  => ++$tabindex,
3221                                 'accesskey' => wfMsg( 'accesskey-watch' ),
3222                                 'id'        => 'wpWatchthis',
3223                         );
3224                         $checkboxes['watch'] =
3225                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
3226                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
3227                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
3228                                 ">{$watchLabel}</label>";
3229                 }
3230                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
3231                 return $checkboxes;
3232         }
3233
3234         /**
3235          * Returns an array of html code of the following buttons:
3236          * save, diff, preview and live
3237          *
3238          * @param $tabindex int Current tabindex
3239          *
3240          * @return array
3241          */
3242         public function getEditButtons( &$tabindex ) {
3243                 $buttons = array();
3244
3245                 $temp = array(
3246                         'id'        => 'wpSave',
3247                         'name'      => 'wpSave',
3248                         'type'      => 'submit',
3249                         'tabindex'  => ++$tabindex,
3250                         'value'     => wfMsg( 'savearticle' ),
3251                         'accesskey' => wfMsg( 'accesskey-save' ),
3252                         'title'     => wfMsg( 'tooltip-save' ) . ' [' . wfMsg( 'accesskey-save' ) . ']',
3253                 );
3254                 $buttons['save'] = Xml::element( 'input', $temp, '' );
3255
3256                 ++$tabindex; // use the same for preview and live preview
3257                 $temp = array(
3258                         'id'        => 'wpPreview',
3259                         'name'      => 'wpPreview',
3260                         'type'      => 'submit',
3261                         'tabindex'  => $tabindex,
3262                         'value'     => wfMsg( 'showpreview' ),
3263                         'accesskey' => wfMsg( 'accesskey-preview' ),
3264                         'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
3265                 );
3266                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
3267                 $buttons['live'] = '';
3268
3269                 $temp = array(
3270                         'id'        => 'wpDiff',
3271                         'name'      => 'wpDiff',
3272                         'type'      => 'submit',
3273                         'tabindex'  => ++$tabindex,
3274                         'value'     => wfMsg( 'showdiff' ),
3275                         'accesskey' => wfMsg( 'accesskey-diff' ),
3276                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
3277                 );
3278                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
3279
3280                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
3281                 return $buttons;
3282         }
3283
3284         /**
3285          * Output preview text only. This can be sucked into the edit page
3286          * via JavaScript, and saves the server time rendering the skin as
3287          * well as theoretically being more robust on the client (doesn't
3288          * disturb the edit box's undo history, won't eat your text on
3289          * failure, etc).
3290          *
3291          * @todo This doesn't include category or interlanguage links.
3292          *       Would need to enhance it a bit, <s>maybe wrap them in XML
3293          *       or something...</s> that might also require more skin
3294          *       initialization, so check whether that's a problem.
3295          */
3296         function livePreview() {
3297                 global $wgOut;
3298                 $wgOut->disable();
3299                 header( 'Content-type: text/xml; charset=utf-8' );
3300                 header( 'Cache-control: no-cache' );
3301
3302                 $previewText = $this->getPreviewText();
3303                 #$categories = $skin->getCategoryLinks();
3304
3305                 $s =
3306                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
3307                 Xml::tags( 'livepreview', null,
3308                         Xml::element( 'preview', null, $previewText )
3309                         #.      Xml::element( 'category', null, $categories )
3310                 );
3311                 echo $s;
3312         }
3313
3314         /**
3315          * Call the stock "user is blocked" page
3316          *
3317          * @deprecated in 1.19; throw an exception directly instead
3318          */
3319         function blockedPage() {
3320                 wfDeprecated( __METHOD__, '1.19' );
3321                 global $wgUser;
3322
3323                 throw new UserBlockedError( $wgUser->getBlock() );
3324         }
3325
3326         /**
3327          * Produce the stock "please login to edit pages" page
3328          *
3329          * @deprecated in 1.19; throw an exception directly instead
3330          */
3331         function userNotLoggedInPage() {
3332                 wfDeprecated( __METHOD__, '1.19' );
3333                 throw new PermissionsError( 'edit' );
3334         }
3335
3336         /**
3337          * Show an error page saying to the user that he has insufficient permissions
3338          * to create a new page
3339          *
3340          * @deprecated in 1.19; throw an exception directly instead
3341          */
3342         function noCreatePermission() {
3343                 wfDeprecated( __METHOD__, '1.19' );
3344                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
3345                 throw new PermissionsError( $permission );
3346         }
3347
3348         /**
3349          * Creates a basic error page which informs the user that
3350          * they have attempted to edit a nonexistent section.
3351          */
3352         function noSuchSectionPage() {
3353                 global $wgOut;
3354
3355                 $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
3356
3357                 $res = wfMsgExt( 'nosuchsectiontext', 'parse', $this->section );
3358                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
3359                 $wgOut->addHTML( $res );
3360
3361                 $wgOut->returnToMain( false, $this->mTitle );
3362         }
3363
3364         /**
3365          * Produce the stock "your edit contains spam" page
3366          *
3367          * @param $match string Text which triggered one or more filters
3368          * @deprecated since 1.17 Use method spamPageWithContent() instead
3369          */
3370         static function spamPage( $match = false ) {
3371                 wfDeprecated( __METHOD__, '1.17' );
3372
3373                 global $wgOut, $wgTitle;
3374
3375                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3376
3377                 $wgOut->addHTML( '<div id="spamprotected">' );
3378                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3379                 if ( $match ) {
3380                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3381                 }
3382                 $wgOut->addHTML( '</div>' );
3383
3384                 $wgOut->returnToMain( false, $wgTitle );
3385         }
3386
3387         /**
3388          * Show "your edit contains spam" page with your diff and text
3389          *
3390          * @param $match string|Array|bool Text (or array of texts) which triggered one or more filters
3391          */
3392         public function spamPageWithContent( $match = false ) {
3393                 global $wgOut, $wgLang;
3394                 $this->textbox2 = $this->textbox1;
3395
3396                 if( is_array( $match ) ){
3397                         $match = $wgLang->listToText( $match );
3398                 }
3399                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3400
3401                 $wgOut->addHTML( '<div id="spamprotected">' );
3402                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3403                 if ( $match ) {
3404                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3405                 }
3406                 $wgOut->addHTML( '</div>' );
3407
3408                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3409
3410                 $handler = ContentHandler::getForTitle( $this->getTitle() );
3411                 $de = $handler->getDifferenceEngine( $this->mArticle->getContext() );
3412
3413                 $content2 = ContentHandler::makeContent( $this->textbox2, $this->getTitle(), $this->content_model, $this->content_format ); #XXX: handle parse errors?
3414                 $de->setContent( $this->getCurrentContent(), $content2 );
3415
3416                 $de->showDiff( wfMsg( "storedversion" ), wfMsgExt( 'yourtext', 'parseinline' ) );
3417
3418                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3419                 $this->showTextbox2();
3420
3421                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
3422         }
3423
3424         /**
3425          * Format an anchor fragment as it would appear for a given section name
3426          * @param $text String
3427          * @return String
3428          * @private
3429          */
3430         function sectionAnchor( $text ) {
3431                 global $wgParser;
3432                 return $wgParser->guessSectionNameFromWikiText( $text );
3433         }
3434
3435         /**
3436          * Check if the browser is on a blacklist of user-agents known to
3437          * mangle UTF-8 data on form submission. Returns true if Unicode
3438          * should make it through, false if it's known to be a problem.
3439          * @return bool
3440          * @private
3441          */
3442         function checkUnicodeCompliantBrowser() {
3443                 global $wgBrowserBlackList;
3444                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
3445                         // No User-Agent header sent? Trust it by default...
3446                         return true;
3447                 }
3448                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
3449                 foreach ( $wgBrowserBlackList as $browser ) {
3450                         if ( preg_match( $browser, $currentbrowser ) ) {
3451                                 return false;
3452                         }
3453                 }
3454                 return true;
3455         }
3456
3457         /**
3458          * Filter an input field through a Unicode de-armoring process if it
3459          * came from an old browser with known broken Unicode editing issues.
3460          *
3461          * @param $request WebRequest
3462          * @param $field String
3463          * @return String
3464          * @private
3465          */
3466         function safeUnicodeInput( $request, $field ) {
3467                 $text = rtrim( $request->getText( $field ) );
3468                 return $request->getBool( 'safemode' )
3469                         ? $this->unmakesafe( $text )
3470                         : $text;
3471         }
3472
3473         /**
3474          * @param $request WebRequest
3475          * @param $text string
3476          * @return string
3477          */
3478         function safeUnicodeText( $request, $text ) {
3479                 $text = rtrim( $text );
3480                 return $request->getBool( 'safemode' )
3481                         ? $this->unmakesafe( $text )
3482                         : $text;
3483         }
3484
3485         /**
3486          * Filter an output field through a Unicode armoring process if it is
3487          * going to an old browser with known broken Unicode editing issues.
3488          *
3489          * @param $text String
3490          * @return String
3491          * @private
3492          */
3493         function safeUnicodeOutput( $text ) {
3494                 global $wgContLang;
3495                 $codedText = $wgContLang->recodeForEdit( $text );
3496                 return $this->checkUnicodeCompliantBrowser()
3497                         ? $codedText
3498                         : $this->makesafe( $codedText );
3499         }
3500
3501         /**
3502          * A number of web browsers are known to corrupt non-ASCII characters
3503          * in a UTF-8 text editing environment. To protect against this,
3504          * detected browsers will be served an armored version of the text,
3505          * with non-ASCII chars converted to numeric HTML character references.
3506          *
3507          * Preexisting such character references will have a 0 added to them
3508          * to ensure that round-trips do not alter the original data.
3509          *
3510          * @param $invalue String
3511          * @return String
3512          * @private
3513          */
3514         function makesafe( $invalue ) {
3515                 // Armor existing references for reversability.
3516                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
3517
3518                 $bytesleft = 0;
3519                 $result = "";
3520                 $working = 0;
3521                 for ( $i = 0; $i < strlen( $invalue ); $i++ ) {
3522                         $bytevalue = ord( $invalue[$i] );
3523                         if ( $bytevalue <= 0x7F ) { // 0xxx xxxx
3524                                 $result .= chr( $bytevalue );
3525                                 $bytesleft = 0;
3526                         } elseif ( $bytevalue <= 0xBF ) { // 10xx xxxx
3527                                 $working = $working << 6;
3528                                 $working += ( $bytevalue & 0x3F );
3529                                 $bytesleft--;
3530                                 if ( $bytesleft <= 0 ) {
3531                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
3532                                 }
3533                         } elseif ( $bytevalue <= 0xDF ) { // 110x xxxx
3534                                 $working = $bytevalue & 0x1F;
3535                                 $bytesleft = 1;
3536                         } elseif ( $bytevalue <= 0xEF ) { // 1110 xxxx
3537                                 $working = $bytevalue & 0x0F;
3538                                 $bytesleft = 2;
3539                         } else { // 1111 0xxx
3540                                 $working = $bytevalue & 0x07;
3541                                 $bytesleft = 3;
3542                         }
3543                 }
3544                 return $result;
3545         }
3546
3547         /**
3548          * Reverse the previously applied transliteration of non-ASCII characters
3549          * back to UTF-8. Used to protect data from corruption by broken web browsers
3550          * as listed in $wgBrowserBlackList.
3551          *
3552          * @param $invalue String
3553          * @return String
3554          * @private
3555          */
3556         function unmakesafe( $invalue ) {
3557                 $result = "";
3558                 for ( $i = 0; $i < strlen( $invalue ); $i++ ) {
3559                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i + 3] != '0' ) ) {
3560                                 $i += 3;
3561                                 $hexstring = "";
3562                                 do {
3563                                         $hexstring .= $invalue[$i];
3564                                         $i++;
3565                                 } while ( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
3566
3567                                 // Do some sanity checks. These aren't needed for reversability,
3568                                 // but should help keep the breakage down if the editor
3569                                 // breaks one of the entities whilst editing.
3570                                 if ( ( substr( $invalue, $i, 1 ) == ";" ) and ( strlen( $hexstring ) <= 6 ) ) {
3571                                         $codepoint = hexdec( $hexstring );
3572                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
3573                                         $codepoint = hexdec($hexstring);
3574                                         $result .= codepointToUtf8( $codepoint );
3575                                 } else {
3576                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
3577                                 }
3578                         } else {
3579                                 $result .= substr( $invalue, $i, 1 );
3580                         }
3581                 }
3582                 // reverse the transform that we made for reversability reasons.
3583                 return strtr( $result, array( "&#x0" => "&#x" ) );
3584         }
3585 }