includes/EditPage.php

   1 <?php
   2 /**
   3  * Page edition user interface.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 /**
  24  * The edit page/HTML interface (split from Article)
  25  * The actual database and text munging is still in Article,
  26  * but it should get easier to call those from alternate
  27  * interfaces.
  28  *
  29  * EditPage cares about two distinct titles:
  30  * $this->mContextTitle is the page that forms submit to, links point to,
  31  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  32  * page in the database that is actually being edited. These are
  33  * usually the same, but they are allowed to be different.
  34  *
  35  * Surgeon General's Warning: prolonged exposure to this class is known to cause
  36  * headaches, which may be fatal.
  37  */
  38 class EditPage {
  39         /**
  40          * Status: Article successfully updated
  41          */
  42         const AS_SUCCESS_UPDATE            = 200;
  43
  44         /**
  45          * Status: Article successfully created
  46          */
  47         const AS_SUCCESS_NEW_ARTICLE       = 201;
  48
  49         /**
  50          * Status: Article update aborted by a hook function
  51          */
  52         const AS_HOOK_ERROR                = 210;
  53
  54         /**
  55          * Status: A hook function returned an error
  56          */
  57         const AS_HOOK_ERROR_EXPECTED       = 212;
  58
  59         /**
  60          * Status: User is blocked from editting this page
  61          */
  62         const AS_BLOCKED_PAGE_FOR_USER     = 215;
  63
  64         /**
  65          * Status: Content too big (> $wgMaxArticleSize)
  66          */
  67         const AS_CONTENT_TOO_BIG           = 216;
  68
  69         /**
  70          * Status: User cannot edit? (not used)
  71          */
  72         const AS_USER_CANNOT_EDIT          = 217;
  73
  74         /**
  75          * Status: this anonymous user is not allowed to edit this page
  76          */
  77         const AS_READ_ONLY_PAGE_ANON       = 218;
  78
  79         /**
  80          * Status: this logged in user is not allowed to edit this page
  81          */
  82         const AS_READ_ONLY_PAGE_LOGGED     = 219;
  83
  84         /**
  85          * Status: wiki is in readonly mode (wfReadOnly() == true)
  86          */
  87         const AS_READ_ONLY_PAGE            = 220;
  88
  89         /**
  90          * Status: rate limiter for action 'edit' was tripped
  91          */
  92         const AS_RATE_LIMITED              = 221;
  93
  94         /**
  95          * Status: article was deleted while editting and param wpRecreate == false or form
  96          * was not posted
  97          */
  98         const AS_ARTICLE_WAS_DELETED       = 222;
  99
 100         /**
 101          * Status: user tried to create this page, but is not allowed to do that
 102          * ( Title->usercan('create') == false )
 103          */
 104         const AS_NO_CREATE_PERMISSION      = 223;
 105
 106         /**
 107          * Status: user tried to create a blank page
 108          */
 109         const AS_BLANK_ARTICLE             = 224;
 110
 111         /**
 112          * Status: (non-resolvable) edit conflict
 113          */
 114         const AS_CONFLICT_DETECTED         = 225;
 115
 116         /**
 117          * Status: no edit summary given and the user has forceeditsummary set and the user is not
 118          * editting in his own userspace or talkspace and wpIgnoreBlankSummary == false
 119          */
 120         const AS_SUMMARY_NEEDED            = 226;
 121
 122         /**
 123          * Status: user tried to create a new section without content
 124          */
 125         const AS_TEXTBOX_EMPTY             = 228;
 126
 127         /**
 128          * Status: article is too big (> $wgMaxArticleSize), after merging in the new section
 129          */
 130         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
 131
 132         /**
 133          * not used
 134          */
 135         const AS_OK                        = 230;
 136
 137         /**
 138          * Status: WikiPage::doEdit() was unsuccessfull
 139          */
 140         const AS_END                       = 231;
 141
 142         /**
 143          * Status: summary contained spam according to one of the regexes in $wgSummarySpamRegex
 144          */
 145         const AS_SPAM_ERROR                = 232;
 146
 147         /**
 148          * Status: anonymous user is not allowed to upload (User::isAllowed('upload') == false)
 149          */
 150         const AS_IMAGE_REDIRECT_ANON       = 233;
 151
 152         /**
 153          * Status: logged in user is not allowed to upload (User::isAllowed('upload') == false)
 154          */
 155         const AS_IMAGE_REDIRECT_LOGGED     = 234;
 156
 157         /**
 158          * Status: can't parse content
 159          */
 160         const AS_PARSE_ERROR                = 240;
 161
 162         /**
 163          * HTML id and name for the beginning of the edit form.
 164          */
 165         const EDITFORM_ID                  = 'editform';
 166
 167         /**
 168          * @var Article
 169          */
 170         var $mArticle;
 171
 172         /**
 173          * @var Title
 174          */
 175         var $mTitle;
 176         private $mContextTitle = null;
 177         var $action = 'submit';
 178         var $isConflict = false;
 179         var $isCssJsSubpage = false;
 180         var $isCssSubpage = false;
 181         var $isJsSubpage = false;
 182         var $isWrongCaseCssJsPage = false;
 183         var $isNew = false; // new page or new section
 184         var $deletedSinceEdit;
 185         var $formtype;
 186         var $firsttime;
 187         var $lastDelete;
 188         var $mTokenOk = false;
 189         var $mTokenOkExceptSuffix = false;
 190         var $mTriedSave = false;
 191         var $incompleteForm = false;
 192         var $tooBig = false;
 193         var $kblength = false;
 194         var $missingComment = false;
 195         var $missingSummary = false;
 196         var $allowBlankSummary = false;
 197         var $autoSumm = '';
 198         var $hookError = '';
 199         #var $mPreviewTemplates;
 200
 201         /**
 202          * @var ParserOutput
 203          */
 204         var $mParserOutput;
 205
 206         /**
 207          * Has a summary been preset using GET parameter &summary= ?
 208          * @var Bool
 209          */
 210         var $hasPresetSummary = false;
 211
 212         var $mBaseRevision = false;
 213         var $mShowSummaryField = true;
 214
 215         # Form values
 216         var $save = false, $preview = false, $diff = false;
 217         var $minoredit = false, $watchthis = false, $recreate = false;
 218         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
 219         var $edittime = '', $section = '', $sectiontitle = '', $starttime = '';
 220         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
 221         var $contentModel = null, $contentFormat = null;
 222
 223         # Placeholders for text injection by hooks (must be HTML)
 224         # extensions should take care to _append_ to the present value
 225         public $editFormPageTop = ''; // Before even the preview
 226         public $editFormTextTop = '';
 227         public $editFormTextBeforeContent = '';
 228         public $editFormTextAfterWarn = '';
 229         public $editFormTextAfterTools = '';
 230         public $editFormTextBottom = '';
 231         public $editFormTextAfterContent = '';
 232         public $previewTextAfterContent = '';
 233         public $mPreloadContent = null;
 234
 235         /* $didSave should be set to true whenever an article was succesfully altered. */
 236         public $didSave = false;
 237         public $undidRev = 0;
 238
 239         public $suppressIntro = false;
 240
 241         /**
 242          * Set to true to allow editing of non-text content types.
 243          *
 244          * @var bool
 245          */
 246         public $allowNonTextContent = false;
 247
 248         /**
 249          * @param $article Article
 250          */
 251         public function __construct( Article $article ) {
 252                 $this->mArticle = $article;
 253                 $this->mTitle = $article->getTitle();
 254
 255                 $this->contentModel = $this->getTitle()->getContentModel();
 256
 257                 $handler = ContentHandler::getForModelID( $this->contentModel );
 258                 $this->contentFormat = $handler->getDefaultFormat();
 259         }
 260
 261         /**
 262          * @return Article
 263          */
 264         public function getArticle() {
 265                 return $this->mArticle;
 266         }
 267
 268         /**
 269          * @since 1.19
 270          * @return Title
 271          */
 272         public function getTitle() {
 273                 return $this->mTitle;
 274         }
 275
 276         /**
 277          * Set the context Title object
 278          *
 279          * @param $title Title object or null
 280          */
 281         public function setContextTitle( $title ) {
 282                 $this->mContextTitle = $title;
 283         }
 284
 285         /**
 286          * Get the context title object.
 287          * If not set, $wgTitle will be returned. This behavior might change in
 288          * the future to return $this->mTitle instead.
 289          *
 290          * @return Title object
 291          */
 292         public function getContextTitle() {
 293                 if ( is_null( $this->mContextTitle ) ) {
 294                         global $wgTitle;
 295                         return $wgTitle;
 296                 } else {
 297                         return $this->mContextTitle;
 298                 }
 299         }
 300
 301         function submit() {
 302                 $this->edit();
 303         }
 304
 305         /**
 306          * This is the function that gets called for "action=edit". It
 307          * sets up various member variables, then passes execution to
 308          * another function, usually showEditForm()
 309          *
 310          * The edit form is self-submitting, so that when things like
 311          * preview and edit conflicts occur, we get the same form back
 312          * with the extra stuff added.  Only when the final submission
 313          * is made and all is well do we actually save and redirect to
 314          * the newly-edited page.
 315          */
 316         function edit() {
 317                 // Allow extensions to modify/prevent this form or submission
 318                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 319                         return;
 320                 }
 321
 322                 wfProfileIn( __METHOD__ );
 323                 wfDebug( __METHOD__ . ": enter\n" );
 324
 325                 $context = $this->getArticle()->getContext();
 326                 $title = $this->getTitle();
 327
 328                 // If they used redlink=1 and the page exists, redirect to the main article
 329                 $request = $context->getRequest();
 330                 if ( $request->getBool( 'redlink' ) && $title->exists() ) {
 331                         $context->getOutput()->redirect( $title->getFullURL() );
 332                         wfProfileOut( __METHOD__ );
 333                         return;
 334                 }
 335
 336                 $this->importFormData( $request );
 337                 $this->firsttime = false;
 338
 339                 if ( $this->live ) {
 340                         $this->livePreview();
 341                         wfProfileOut( __METHOD__ );
 342                         return;
 343                 }
 344
 345                 if ( wfReadOnly() && $this->save ) {
 346                         // Force preview
 347                         $this->save = false;
 348                         $this->preview = true;
 349                 }
 350
 351                 if ( $this->save ) {
 352                         $this->formtype = 'save';
 353                 } elseif ( $this->preview ) {
 354                         $this->formtype = 'preview';
 355                 } elseif ( $this->diff ) {
 356                         $this->formtype = 'diff';
 357                 } else { # First time through
 358                         $this->firsttime = true;
 359                         if ( $this->previewOnOpen() ) {
 360                                 $this->formtype = 'preview';
 361                         } else {
 362                                 $this->formtype = 'initial';
 363                         }
 364                 }
 365
 366                 $permErrors = $this->getEditPermissionErrors();
 367                 if ( $permErrors ) {
 368                         wfDebug( __METHOD__ . ": User can't edit\n" );
 369                         // Auto-block user's IP if the account was "hard" blocked
 370                         $context->getUser()->spreadAnyEditBlock();
 371
 372                         $this->displayPermissionsError( $permErrors );
 373
 374                         wfProfileOut( __METHOD__ );
 375                         return;
 376                 }
 377
 378                 wfProfileIn( __METHOD__ . "-business-end" );
 379
 380                 $this->isConflict = false;
 381                 // css / js subpages of user pages get a special treatment
 382                 $this->isCssJsSubpage       = $title->isCssJsSubpage();
 383                 $this->isCssSubpage         = $title->isCssSubpage();
 384                 $this->isJsSubpage          = $title->isJsSubpage();
 385                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 386
 387                 # Show applicable editing introductions
 388                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 389                         $this->showIntro();
 390                 }
 391
 392                 # Attempt submission here.  This will check for edit conflicts,
 393                 # and redundantly check for locked database, blocked IPs, etc.
 394                 # that edit() already checked just in case someone tries to sneak
 395                 # in the back door with a hand-edited submission URL.
 396
 397                 if ( 'save' == $this->formtype ) {
 398                         if ( !$this->attemptSave() ) {
 399                                 wfProfileOut( __METHOD__ . "-business-end" );
 400                                 wfProfileOut( __METHOD__ );
 401                                 return;
 402                         }
 403                 }
 404
 405                 # First time through: get contents, set time for conflict
 406                 # checking, etc.
 407                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 408                         if ( $this->initialiseForm() === false ) {
 409                                 $this->noSuchSectionPage();
 410                                 wfProfileOut( __METHOD__ . "-business-end" );
 411                                 wfProfileOut( __METHOD__ );
 412                                 return;
 413                         }
 414
 415                         if ( !$title->getArticleID() ){
 416                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 417                         } else {
 418                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 419                         }
 420                 }
 421
 422                 $this->showEditForm();
 423                 wfProfileOut( __METHOD__ . "-business-end" );
 424                 wfProfileOut( __METHOD__ );
 425         }
 426
 427         /**
 428          * @return array
 429          */
 430         protected function getEditPermissionErrors() {
 431                 $user = $this->getArticle()->getContext()->getUser();
 432
 433                 $permErrors = $this->getTitle()->getUserPermissionsErrors( 'edit', $user );
 434                 # Can this title be created?
 435                 if ( !$this->getTitle()->exists() ) {
 436                         $permErrors = array_merge( $permErrors,
 437                                 wfArrayDiff2( $this->getTitle()->getUserPermissionsErrors( 'create', $user ), $permErrors ) );
 438                 }
 439                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 440                 $remove = array();
 441                 foreach ( $permErrors as $error ) {
 442                         if ( ( $this->preview || $this->diff ) &&
 443                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 444                         {
 445                                 $remove[] = $error;
 446                         }
 447                 }
 448                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 449                 return $permErrors;
 450         }
 451
 452         /**
 453          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 454          * but with the following differences:
 455          * - If redlink=1, the user will be redirected to the page
 456          * - If there is content to display or the error occurs while either saving,
 457          *   previewing or showing the difference, it will be a
 458          *   "View source for ..." page displaying the source code after the error message.
 459          *
 460          * @since 1.19
 461          * @param $permErrors Array of permissions errors, as returned by
 462          *                    Title::getUserPermissionsErrors().
 463          * @throws PermissionsError
 464          */
 465         protected function displayPermissionsError( array $permErrors ) {
 466                 $context = $this->getArticle()->getContext();
 467                 $out = $context->getOutput();
 468
 469                 if ( $context->getRequest()->getBool( 'redlink' ) ) {
 470                         // The edit page was reached via a red link.
 471                         // Redirect to the article page and let them click the edit tab if
 472                         // they really want a permission error.
 473                         $out->redirect( $this->getTitle()->getFullUrl() );
 474                         return;
 475                 }
 476
 477                 $content = $this->getContentObject();
 478
 479                 # Use the normal message if there's nothing to display
 480                 if ( $this->firsttime && ( !$content || $content->isEmpty() ) ) {
 481                         $action = $this->getTitle()->exists() ? 'edit' :
 482                                 ( $this->getTitle()->isTalkPage() ? 'createtalk' : 'createpage' );
 483                         throw new PermissionsError( $action, $permErrors );
 484                 }
 485
 486                 $out->setPageTitle( $context->msg('viewsource-title', $this->getContextTitle()->getPrefixedText() ) );
 487                 $out->addBacklinkSubtitle( $this->getContextTitle() );
 488                 $out->addWikiText( $out->formatPermissionsErrorMessage( $permErrors, 'edit' ) );
 489                 $out->addHTML( "<hr />\n" );
 490
 491                 # If the user made changes, preserve them when showing the markup
 492                 # (This happens when a user is blocked during edit, for instance)
 493                 if ( !$this->firsttime ) {
 494                         $text = $this->textbox1;
 495                         $out->addWikiMsg( 'viewyourtext' );
 496                 } else {
 497                         $text = $this->toEditText( $content );
 498                         $out->addWikiMsg( 'viewsourcetext' );
 499                 }
 500
 501                 $this->showTextbox( $text, 'wpTextbox1', array( 'readonly' ) );
 502
 503                 $out->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 504                         Linker::formatTemplates( $this->getTemplates() ) ) );
 505
 506                 if ( $this->getTitle()->exists() ) {
 507                         $out->returnToMain( null, $this->getTitle() );
 508                 }
 509         }
 510
 511         /**
 512          * Show a read-only error
 513          * Parameters are the same as OutputPage:readOnlyPage()
 514          * Redirect to the article page if redlink=1
 515          * @deprecated in 1.19; use displayPermissionsError() instead
 516          */
 517         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 518                 wfDeprecated( __METHOD__, '1.19' );
 519
 520                 $context = $this->getArticle()->getContext();
 521
 522                 if ( $context->getRequest()->getBool( 'redlink' ) ) {
 523                         // The edit page was reached via a red link.
 524                         // Redirect to the article page and let them click the edit tab if
 525                         // they really want a permission error.
 526                         $context->getOutput()->redirect( $this->getTitle()->getFullUrl() );
 527                 } else {
 528                         $context->getOutput()->readOnlyPage( $source, $protected, $reasons, $action );
 529                 }
 530         }
 531
 532         /**
 533          * Should we show a preview when the edit form is first shown?
 534          *
 535          * @return bool
 536          */
 537         protected function previewOnOpen() {
 538                 global $wgPreviewOnOpenNamespaces;
 539
 540                 $context = $this->getArticle()->getContext();
 541                 $request = $context->getRequest();
 542
 543                 if ( $request->getVal( 'preview' ) == 'yes' ) {
 544                         // Explicit override from request
 545                         return true;
 546                 } elseif ( $request->getVal( 'preview' ) == 'no' ) {
 547                         // Explicit override from request
 548                         return false;
 549                 } elseif ( $this->section == 'new' ) {
 550                         // Nothing *to* preview for new sections
 551                         return false;
 552                 } elseif (
 553                         ( $request->getVal( 'preload' ) !== null || $this->getTitle()->exists() ) &&
 554                         $context->getUser()->getOption( 'previewonfirst' )
 555                 ) {
 556                         // Standard preference behaviour
 557                         return true;
 558                 } elseif ( !$this->getTitle()->exists() &&
 559                         isset( $wgPreviewOnOpenNamespaces[$this->getTitle()->getNamespace()] ) &&
 560                         $wgPreviewOnOpenNamespaces[$this->getTitle()->getNamespace()] )
 561                 {
 562                         // Categories are special
 563                         return true;
 564                 }
 565
 566                 return false;
 567         }
 568
 569         /**
 570          * Checks whether the user entered a skin name in uppercase,
 571          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 572          *
 573          * @return bool
 574          */
 575         protected function isWrongCaseCssJsPage() {
 576                 if ( $this->getTitle()->isCssJsSubpage() ) {
 577                         $name = $this->getTitle()->getSkinFromCssJsSubpage();
 578                         $skins = array_merge(
 579                                 array_keys( Skin::getSkinNames() ),
 580                                 array( 'common' )
 581                         );
 582                         return !in_array( $name, $skins )
 583                                 && in_array( strtolower( $name ), $skins );
 584                 }
 585
 586                 return false;
 587         }
 588
 589         /**
 590          * Does this EditPage class support section editing?
 591          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 592          *
 593          * @return bool
 594          */
 595         protected function isSectionEditSupported() {
 596                 return true;
 597         }
 598
 599         /**
 600          * This function collects the form data and uses it to populate various member variables.
 601          * @param $request WebRequest
 602          */
 603         function importFormData( &$request ) {
 604                 global $wgContLang;
 605
 606                 wfProfileIn( __METHOD__ );
 607
 608                 # Section edit can come from either the form or a link
 609                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 610                 $this->isNew = !$this->getTitle()->exists() || $this->section == 'new';
 611
 612                 if ( $request->wasPosted() ) {
 613                         # These fields need to be checked for encoding.
 614                         # Also remove trailing whitespace, but don't remove _initial_
 615                         # whitespace from the text boxes. This may be significant formatting.
 616                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 617                         if ( !$request->getCheck( 'wpTextbox2' ) ) {
 618                                 // Skip this if wpTextbox2 has input, it indicates that we came
 619                                 // from a conflict page with raw page text, not a custom form
 620                                 // modified by subclasses
 621                                 wfProfileIn( get_class( $this ) . "::importContentFormData" );
 622                                 $textbox1 = $this->importContentFormData( $request );
 623                                 if ( isset( $textbox1 ) ) {
 624                                         $this->textbox1 = $textbox1;
 625                                 }
 626
 627                                 wfProfileOut( get_class( $this ) . "::importContentFormData" );
 628                         }
 629
 630                         # Truncate for whole multibyte characters
 631                         $this->summary = $wgContLang->truncate( $request->getText( 'wpSummary' ), 255 );
 632
 633                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 634                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 635                         # section titles.
 636                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 637
 638                         # Treat sectiontitle the same way as summary.
 639                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 640                         # currently doing double duty as both edit summary and section title. Right now this
 641                         # is just to allow API edits to work around this limitation, but this should be
 642                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 643                         $this->sectiontitle = $wgContLang->truncate( $request->getText( 'wpSectionTitle' ), 255 );
 644                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 645
 646                         $this->edittime = $request->getVal( 'wpEdittime' );
 647                         $this->starttime = $request->getVal( 'wpStarttime' );
 648
 649                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 650
 651                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 652                                 // wpTextbox1 field is missing, possibly due to being "too big"
 653                                 // according to some filter rules such as Suhosin's setting for
 654                                 // suhosin.request.max_value_length (d'oh)
 655                                 $this->incompleteForm = true;
 656                         } else {
 657                                 // edittime should be one of our last fields; if it's missing,
 658                                 // the submission probably broke somewhere in the middle.
 659                                 $this->incompleteForm = is_null( $this->edittime );
 660                         }
 661                         if ( $this->incompleteForm ) {
 662                                 # If the form is incomplete, force to preview.
 663                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 664                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 665                                 $this->preview = true;
 666                         } else {
 667                                 /* Fallback for live preview */
 668                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 669                                 $this->diff = $request->getCheck( 'wpDiff' );
 670
 671                                 // Remember whether a save was requested, so we can indicate
 672                                 // if we forced preview due to session failure.
 673                                 $this->mTriedSave = !$this->preview;
 674
 675                                 if ( $this->tokenOk( $request ) ) {
 676                                         # Some browsers will not report any submit button
 677                                         # if the user hits enter in the comment box.
 678                                         # The unmarked state will be assumed to be a save,
 679                                         # if the form seems otherwise complete.
 680                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 681                                 } elseif ( $this->diff ) {
 682                                         # Failed token check, but only requested "Show Changes".
 683                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 684                                 } else {
 685                                         # Page might be a hack attempt posted from
 686                                         # an external site. Preview instead of saving.
 687                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 688                                         $this->preview = true;
 689                                 }
 690                         }
 691                         $this->save = !$this->preview && !$this->diff;
 692                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 693                                 $this->edittime = null;
 694                         }
 695
 696                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 697                                 $this->starttime = null;
 698                         }
 699
 700                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 701
 702                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 703                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 704
 705                         # Don't force edit summaries when a user is editing their own user or talk page
 706                         $user = $this->getArticle()->getContext()->getUser();
 707                         if ( ( $this->getTitle()->mNamespace == NS_USER || $this->getTitle()->mNamespace == NS_USER_TALK ) &&
 708                                 $this->getTitle()->getText() == $user->getName() )
 709                         {
 710                                 $this->allowBlankSummary = true;
 711                         } else {
 712                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$user->getOption( 'forceeditsummary' );
 713                         }
 714
 715                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 716                 } else {
 717                         # Not a posted form? Start with nothing.
 718                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 719                         $this->textbox1     = '';
 720                         $this->summary      = '';
 721                         $this->sectiontitle = '';
 722                         $this->edittime     = '';
 723                         $this->starttime    = wfTimestampNow();
 724                         $this->edit         = false;
 725                         $this->preview      = false;
 726                         $this->save         = false;
 727                         $this->diff         = false;
 728                         $this->minoredit    = false;
 729                         $this->watchthis    = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 730                         $this->recreate     = false;
 731
 732                         // When creating a new section, we can preload a section title by passing it as the
 733                         // preloadtitle parameter in the URL (Bug 13100)
 734                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 735                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
 736                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
 737                                 $this->summary = $request->getVal( 'preloadtitle' );
 738                         }
 739                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 740                                 $this->summary = $request->getText( 'summary' );
 741                                 if ( $this->summary !== '' ) {
 742                                         $this->hasPresetSummary = true;
 743                                 }
 744                         }
 745
 746                         if ( $request->getVal( 'minor' ) ) {
 747                                 $this->minoredit = true;
 748                         }
 749                 }
 750
 751                 $this->oldid = $request->getInt( 'oldid' );
 752
 753                 $this->bot = $request->getBool( 'bot', true );
 754                 $this->nosummary = $request->getBool( 'nosummary' );
 755
 756                 $content_handler = ContentHandler::getForTitle( $this->getTitle() );
 757                 $this->contentModel = $request->getText( 'model', $content_handler->getModelID() ); #may be overridden by revision
 758                 $this->contentFormat = $request->getText( 'format', $content_handler->getDefaultFormat() ); #may be overridden by revision
 759
 760                 # @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
 761                 # @todo Check if the desired content model supports the given content format!
 762
 763                 $this->live = $request->getCheck( 'live' );
 764                 $this->editintro = $request->getText( 'editintro',
 765                         // Custom edit intro for new sections
 766                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 767
 768                 // Allow extensions to modify form data
 769                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 770
 771                 wfProfileOut( __METHOD__ );
 772         }
 773
 774         /**
 775          * Subpage overridable method for extracting the page content data from the
 776          * posted form to be placed in $this->textbox1, if using customized input
 777          * this method should be overrided and return the page text that will be used
 778          * for saving, preview parsing and so on...
 779          *
 780          * @param $request WebRequest
 781          */
 782         protected function importContentFormData( &$request ) {
 783                 return; // Don't do anything, EditPage already extracted wpTextbox1
 784         }
 785
 786         /**
 787          * Initialise form fields in the object
 788          * Called on the first invocation, e.g. when a user clicks an edit link
 789          * @return bool -- if the requested section is valid
 790          */
 791         function initialiseForm() {
 792                 $this->edittime = $this->getArticle()->getTimestamp();
 793
 794                 $content = $this->getContentObject( false ); # @todo Track content object?!
 795                 if ( $content === false ) {
 796                         return false;
 797                 }
 798                 $this->textbox1 = $this->toEditText( $content );
 799
 800                 // activate checkboxes if user wants them to be always active
 801                 # Sort out the "watch" checkbox
 802                 $user = $this->getArticle()->getContext()->getUser();
 803                 if ( $user->getOption( 'watchdefault' ) ) {
 804                         # Watch all edits
 805                         $this->watchthis = true;
 806                 } elseif ( $user->getOption( 'watchcreations' ) && !$this->getTitle()->exists() ) {
 807                         # Watch creations
 808                         $this->watchthis = true;
 809                 } elseif ( $user->isWatched( $this->getTitle() ) ) {
 810                         # Already watched
 811                         $this->watchthis = true;
 812                 }
 813
 814                 if ( $user->getOption( 'minordefault' ) && !$this->isNew ) {
 815                         $this->minoredit = true;
 816                 }
 817
 818                 if ( $this->textbox1 === false ) {
 819                         return false;
 820                 }
 821
 822                 wfProxyCheck();
 823                 return true;
 824         }
 825
 826         /**
 827          * Fetch initial editing page content.
 828          *
 829          * @param $def_text string|bool
 830          * @return mixed string on success, $def_text for invalid sections
 831          * @private
 832          * @deprecated since 1.21, get WikiPage::getContent() instead.
 833          */
 834         function getContent( $def_text = false ) {
 835                 ContentHandler::deprecated( __METHOD__, '1.21' );
 836
 837                 if ( $def_text !== null && $def_text !== false && $def_text !== '' ) {
 838                         $def_content = $this->toEditContent( $def_text );
 839                 } else {
 840                         $def_content = false;
 841                 }
 842
 843                 $content = $this->getContentObject( $def_content );
 844
 845                 // Note: EditPage should only be used with text based content anyway.
 846                 return $this->toEditText( $content );
 847         }
 848
 849         /**
 850          * @param Content|null $def_content The default value to return
 851          *
 852          * @return mixed Content on success, $def_content for invalid sections
 853          *
 854          * @since 1.21
 855          */
 856         protected function getContentObject( $def_content = null ) {
 857                 wfProfileIn( __METHOD__ );
 858
 859                 $content = false;
 860                 $context = $this->getArticle()->getContext();
 861                 $request = $context->getRequest();
 862
 863                 // For message page not locally set, use the i18n message.
 864                 // For other non-existent articles, use preload text if any.
 865                 if ( !$this->getTitle()->exists() || $this->section == 'new' ) {
 866                         if ( $this->getTitle()->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
 867                                 # If this is a system message, get the default text.
 868                                 $msg = $this->getTitle()->getDefaultMessageText();
 869
 870                                 $content = $this->toEditContent( $msg );
 871                         }
 872                         if ( $content === false ) {
 873                                 # If requested, preload some text.
 874                                 $preload = $request->getVal( 'preload',
 875                                         // Custom preload text for new sections
 876                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : ''
 877                                 );
 878
 879                                 $content = $this->getPreloadedContent( $preload );
 880                         }
 881                 // For existing pages, get text based on "undo" or section parameters.
 882                 } else {
 883                         if ( $this->section != '' ) {
 884                                 // Get section edit text (returns $def_text for invalid sections)
 885                                 $orig = $this->getOriginalContent();
 886                                 $content = $orig ? $orig->getSection( $this->section ) : null;
 887
 888                                 if ( !$content ) {
 889                                         $content = $def_content;
 890                                 }
 891                         } else {
 892                                 $undoafter = $request->getInt( 'undoafter' );
 893                                 $undo = $request->getInt( 'undo' );
 894
 895                                 if ( $undo > 0 && $undoafter > 0 ) {
 896                                         if ( $undo < $undoafter ) {
 897                                                 # If they got undoafter and undo round the wrong way, switch them
 898                                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 899                                         }
 900
 901                                         $undorev = Revision::newFromId( $undo );
 902                                         $oldrev = Revision::newFromId( $undoafter );
 903
 904                                         # Sanity check, make sure it's the right page,
 905                                         # the revisions exist and they were not deleted.
 906                                         # Otherwise, $content will be left as-is.
 907                                         if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 908                                                 $undorev->getPage() == $oldrev->getPage() &&
 909                                                 $undorev->getPage() == $this->getTitle()->getArticleID() &&
 910                                                 !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 911                                                 !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 912
 913                                                 $content = $this->getArticle()->getUndoContent( $undorev, $oldrev );
 914
 915                                                 if ( $content === false ) {
 916                                                         # Warn the user that something went wrong
 917                                                         $undoMsg = 'failure';
 918                                                 } else {
 919                                                         # Inform the user of our success and set an automatic edit summary
 920                                                         $undoMsg = 'success';
 921
 922                                                         # If we just undid one rev, use an autosummary
 923                                                         $firstrev = $oldrev->getNext();
 924                                                         if ( $firstrev && $firstrev->getId() == $undo ) {
 925                                                                 $undoSummary = $context->msg( 'undo-summary', $undo,
 926                                                                         $undorev->getUserText() )->inContentLanguage()->text();
 927                                                                 if ( $this->summary === '' ) {
 928                                                                         $this->summary = $undoSummary;
 929                                                                 } else {
 930                                                                         $this->summary = $undoSummary .
 931                                                                                 $context->msg( 'colon-separator' )->inContentLanguage()->text() .
 932                                                                                 $this->summary;
 933                                                                 }
 934                                                                 $this->undidRev = $undo;
 935                                                         }
 936                                                         $this->formtype = 'diff';
 937                                                 }
 938                                         } else {
 939                                                 // Failed basic sanity checks.
 940                                                 // Older revisions may have been removed since the link
 941                                                 // was created, or we may simply have got bogus input.
 942                                                 $undoMsg = 'norev';
 943                                         }
 944
 945                                         $class = ( $undoMsg == 'success' ? '' : 'error ' ) . "mw-undo-{$undoMsg}";
 946                                         $this->editFormPageTop .= $context->getOutput()->parse( "<div class=\"{$class}\">" .
 947                                                 $context->msg( 'undo-' . $undoMsg )->plain() . '</div>', true, /* interface */true );
 948                                 }
 949
 950                                 if ( $content === false ) {
 951                                         $content = $this->getOriginalContent();
 952                                 }
 953                         }
 954                 }
 955
 956                 wfProfileOut( __METHOD__ );
 957                 return $content;
 958         }
 959
 960         /**
 961          * Get the content of the wanted revision, without section extraction.
 962          *
 963          * The result of this function can be used to compare user's input with
 964          * section replaced in its context (using WikiPage::replaceSection())
 965          * to the original text of the edit.
 966          *
 967          * This difers from Article::getContent() that when a missing revision is
 968          * encountered the result will be null and not the
 969          * 'missing-revision' message.
 970          *
 971          * @since 1.19
 972          * @return Content|null
 973          */
 974         private function getOriginalContent() {
 975                 if ( $this->section == 'new' ) {
 976                         return $this->getCurrentContent();
 977                 }
 978                 $revision = $this->getArticle()->getRevisionFetched();
 979                 if ( $revision === null ) {
 980                         if ( !$this->contentModel ) $this->contentModel = $this->getTitle()->getContentModel();
 981                         $handler = ContentHandler::getForModelID( $this->contentModel );
 982
 983                         return $handler->makeEmptyContent();
 984                 }
 985
 986                 $content = $revision->getContent();
 987
 988                 return $content;
 989         }
 990
 991         /**
 992          * Get the current content of the page. This is basically similar to
 993          * WikiPage::getContent( Revision::RAW ) except that when the page doesn't exist an empty
 994          * content object is returned instead of null.
 995          *
 996          * @since 1.21
 997          * @return Content
 998          */
 999         protected function getCurrentContent() {
1000                 $rev = $this->getArticle()->getRevision();
1001                 $content = $rev ? $rev->getContent( Revision::RAW ) : null;
1002
1003                 if ( $content  === false || $content === null ) {
1004                         if ( !$this->contentModel ) $this->contentModel = $this->getTitle()->getContentModel();
1005                         $handler = ContentHandler::getForModelID( $this->contentModel );
1006
1007                         return $handler->makeEmptyContent();
1008                 } else {
1009                         # nasty side-effect, but needed for consistency
1010                         $this->contentModel = $rev->getContentModel();
1011                         $this->contentFormat = $rev->getContentFormat();
1012
1013                         return $content;
1014                 }
1015         }
1016
1017
1018         /**
1019          * Use this method before edit() to preload some text into the edit box
1020          *
1021          * @param $text string
1022          * @deprecated since 1.21, use setPreloadedContent() instead.
1023          */
1024         public function setPreloadedText( $text ) {
1025                 ContentHandler::deprecated( __METHOD__, "1.21" );
1026
1027                 $content = $this->toEditContent( $text );
1028
1029                 $this->setPreloadedContent( $content );
1030         }
1031
1032         /**
1033          * Use this method before edit() to preload some content into the edit box
1034          *
1035          * @param $content Content
1036          *
1037          * @since 1.21
1038          */
1039         public function setPreloadedContent( Content $content ) {
1040                 $this->mPreloadContent = $content;
1041         }
1042
1043         /**
1044          * Get the contents to be preloaded into the box, either set by
1045          * an earlier setPreloadText() or by loading the given page.
1046          *
1047          * @param $preload String: representing the title to preload from.
1048          *
1049          * @return String
1050          *
1051          * @deprecated since 1.21, use getPreloadedContent() instead
1052          */
1053         protected function getPreloadedText( $preload ) {
1054                 ContentHandler::deprecated( __METHOD__, "1.21" );
1055
1056                 $content = $this->getPreloadedContent( $preload );
1057                 $text = $this->toEditText( $content );
1058
1059                 return $text;
1060         }
1061
1062         /**
1063          * Get the contents to be preloaded into the box, either set by
1064          * an earlier setPreloadText() or by loading the given page.
1065          *
1066          * @param $preload String: representing the title to preload from.
1067          *
1068          * @return Content
1069          *
1070          * @since 1.21
1071          */
1072         protected function getPreloadedContent( $preload ) {
1073                 if ( !empty( $this->mPreloadContent ) ) {
1074                         return $this->mPreloadContent;
1075                 }
1076
1077                 $handler = ContentHandler::getForTitle( $this->getTitle() );
1078
1079                 if ( $preload === '' ) {
1080                         return $handler->makeEmptyContent();
1081                 }
1082
1083                 $title = Title::newFromText( $preload );
1084                 $user = $this->getArticle()->getContext()->getUser();
1085                 # Check for existence to avoid getting MediaWiki:Noarticletext
1086                 if ( $title === null || !$title->exists() || !$title->userCan( 'read', $user ) ) {
1087                         return $handler->makeEmptyContent();
1088                 }
1089
1090                 $page = WikiPage::factory( $title );
1091                 if ( $page->isRedirect() ) {
1092                         $title = $page->getRedirectTarget();
1093                         # Same as before
1094                         if ( $title === null || !$title->exists() || !$title->userCan( 'read', $user ) ) {
1095                                 return $handler->makeEmptyContent();
1096                         }
1097                         $page = WikiPage::factory( $title );
1098                 }
1099
1100                 $parserOptions = ParserOptions::newFromUser( $user );
1101                 $content = $page->getContent( Revision::RAW );
1102
1103                 if ( !$content ) {
1104                         return $handler->makeEmptyContent();
1105                 }
1106
1107                 return $content->preloadTransform( $title, $parserOptions );
1108         }
1109
1110         /**
1111          * Make sure the form isn't faking a user's credentials.
1112          *
1113          * @param $request WebRequest
1114          * @return bool
1115          * @private
1116          */
1117         function tokenOk( &$request ) {
1118                 $user = $this->getArticle()->getContext()->getUser();
1119                 $token = $request->getVal( 'wpEditToken' );
1120                 $this->mTokenOk = $user->matchEditToken( $token );
1121                 $this->mTokenOkExceptSuffix = $user->matchEditTokenNoSuffix( $token );
1122                 return $this->mTokenOk;
1123         }
1124
1125         /**
1126          * Attempt submission
1127          * @throws UserBlockedError|ReadOnlyError|ThrottledError|PermissionsError
1128          * @return bool false if output is done, true if the rest of the form should be displayed
1129          */
1130         function attemptSave() {
1131                 $context = $this->getArticle()->getContext();
1132                 $out = $context->getOutput();
1133                 $user = $context->getUser();
1134
1135                 $resultDetails = false;
1136                 # Allow bots to exempt some edits from bot flagging
1137                 $bot = $user->isAllowed( 'bot' ) && $this->bot;
1138                 $status = $this->internalAttemptSave( $resultDetails, $bot );
1139                 // FIXME: once the interface for internalAttemptSave() is made nicer, this should use the message in $status
1140                 if ( $status->value == self::AS_SUCCESS_UPDATE || $status->value == self::AS_SUCCESS_NEW_ARTICLE ) {
1141                         $this->didSave = true;
1142                 }
1143
1144                 switch ( $status->value ) {
1145                         case self::AS_HOOK_ERROR_EXPECTED:
1146                         case self::AS_CONTENT_TOO_BIG:
1147                         case self::AS_ARTICLE_WAS_DELETED:
1148                         case self::AS_CONFLICT_DETECTED:
1149                         case self::AS_SUMMARY_NEEDED:
1150                         case self::AS_TEXTBOX_EMPTY:
1151                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
1152                         case self::AS_END:
1153                                 return true;
1154
1155                         case self::AS_HOOK_ERROR:
1156                                 return false;
1157
1158                         case self::AS_PARSE_ERROR:
1159                                 $out->addWikiText( '<div class="error">' . $status->getWikiText() . '</div>');
1160                                 return true;
1161
1162                         case self::AS_SUCCESS_NEW_ARTICLE:
1163                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
1164                                 $anchor = isset ( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
1165                                 $out->redirect( $this->getTitle()->getFullURL( $query ) . $anchor );
1166                                 return false;
1167
1168                         case self::AS_SUCCESS_UPDATE:
1169                                 $extraQuery = '';
1170                                 $sectionanchor = $resultDetails['sectionanchor'];
1171
1172                                 // Give extensions a chance to modify URL query on update
1173                                 wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this->getArticle(), &$sectionanchor, &$extraQuery ) );
1174
1175                                 if ( $resultDetails['redirect'] ) {
1176                                         if ( $extraQuery == '' ) {
1177                                                 $extraQuery = 'redirect=no';
1178                                         } else {
1179                                                 $extraQuery = 'redirect=no&' . $extraQuery;
1180                                         }
1181                                 }
1182                                 $out->redirect( $this->getTitle()->getFullURL( $extraQuery ) . $sectionanchor );
1183                                 return false;
1184
1185                         case self::AS_BLANK_ARTICLE:
1186                                 $out->redirect( $this->getContextTitle()->getFullURL() );
1187                                 return false;
1188
1189                         case self::AS_SPAM_ERROR:
1190                                 $this->spamPageWithContent( $resultDetails['spam'] );
1191                                 return false;
1192
1193                         case self::AS_BLOCKED_PAGE_FOR_USER:
1194                                 throw new UserBlockedError( $user->getBlock() );
1195
1196                         case self::AS_IMAGE_REDIRECT_ANON:
1197                         case self::AS_IMAGE_REDIRECT_LOGGED:
1198                                 throw new PermissionsError( 'upload' );
1199
1200                         case self::AS_READ_ONLY_PAGE_ANON:
1201                         case self::AS_READ_ONLY_PAGE_LOGGED:
1202                                 throw new PermissionsError( 'edit' );
1203
1204                         case self::AS_READ_ONLY_PAGE:
1205                                 throw new ReadOnlyError;
1206
1207                         case self::AS_RATE_LIMITED:
1208                                 throw new ThrottledError();
1209
1210                         case self::AS_NO_CREATE_PERMISSION:
1211                                 $permission = $this->getTitle()->isTalkPage() ? 'createtalk' : 'createpage';
1212                                 throw new PermissionsError( $permission );
1213
1214                         default:
1215                                 // We don't recognize $status->value. The only way that can happen
1216                                 // is if an extension hook aborted from inside ArticleSave.
1217                                 // Render the status object into $this->hookError
1218                                 // FIXME this sucks, we should just use the Status object throughout
1219                                 $this->hookError = '<div class="error">' . $status->getWikitext() .
1220                                         '</div>';
1221                                 return true;
1222                 }
1223         }
1224
1225         /**
1226          * Attempt submission (no UI)
1227          *
1228          * @param $result
1229          * @param $bot bool
1230          *
1231          * @return Status object, possibly with a message, but always with one of the AS_* constants in $status->value,
1232          *
1233          * FIXME: This interface is TERRIBLE, but hard to get rid of due to various error display idiosyncrasies. There are
1234          * also lots of cases where error metadata is set in the object and retrieved later instead of being returned, e.g.
1235          * AS_CONTENT_TOO_BIG and AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some time.
1236          */
1237         function internalAttemptSave( &$result, $bot = false ) {
1238                 global $wgParser, $wgMaxArticleSize;
1239
1240                 $status = Status::newGood();
1241
1242                 wfProfileIn( __METHOD__  );
1243                 wfProfileIn( __METHOD__ . '-checks' );
1244
1245                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
1246                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
1247                         $status->fatal( 'hookaborted' );
1248                         $status->value = self::AS_HOOK_ERROR;
1249                         wfProfileOut( __METHOD__ . '-checks' );
1250                         wfProfileOut( __METHOD__  );
1251                         return $status;
1252                 }
1253
1254                 try {
1255                         # Construct Content object
1256                         $textbox_content = $this->toEditContent( $this->textbox1 );
1257                 } catch (MWContentSerializationException $ex) {
1258                         $status->fatal( 'content-failed-to-parse', $this->contentModel, $this->contentFormat, $ex->getMessage() );
1259                         $status->value = self::AS_PARSE_ERROR;
1260                         wfProfileOut( __METHOD__ );
1261                         return $status;
1262                 }
1263
1264                 $context = $this->getArticle()->getContext();
1265                 $user = $context->getUser();
1266
1267                 # Check image redirect
1268                 if ( $this->getTitle()->getNamespace() == NS_FILE &&
1269                         $textbox_content->isRedirect() &&
1270                         !$user->isAllowed( 'upload' ) ) {
1271                                 $code = $user->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
1272                                 $status->setResult( false, $code );
1273
1274                                 wfProfileOut( __METHOD__ . '-checks' );
1275                                 wfProfileOut( __METHOD__  );
1276
1277                                 return $status;
1278                 }
1279
1280                 # Check for spam
1281                 $match = self::matchSummarySpamRegex( $this->summary );
1282                 if ( $match === false ) {
1283                         $match = self::matchSpamRegex( $this->textbox1 );
1284                 }
1285                 if ( $match !== false ) {
1286                         $result['spam'] = $match;
1287                         $ip = $context->getRequest()->getIP();
1288                         $pdbk = $this->getTitle()->getPrefixedDBkey();
1289                         $match = str_replace( "\n", '', $match );
1290                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
1291                         $status->fatal( 'spamprotectionmatch', $match );
1292                         $status->value = self::AS_SPAM_ERROR;
1293                         wfProfileOut( __METHOD__ . '-checks' );
1294                         wfProfileOut( __METHOD__ );
1295                         return $status;
1296                 }
1297                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
1298                         # Error messages etc. could be handled within the hook...
1299                         $status->fatal( 'hookaborted' );
1300                         $status->value = self::AS_HOOK_ERROR;
1301                         wfProfileOut( __METHOD__ . '-checks' );
1302                         wfProfileOut( __METHOD__ );
1303                         return $status;
1304                 } elseif ( $this->hookError != '' ) {
1305                         # ...or the hook could be expecting us to produce an error
1306                         $status->fatal( 'hookaborted' );
1307                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1308                         wfProfileOut( __METHOD__ . '-checks' );
1309                         wfProfileOut( __METHOD__ );
1310                         return $status;
1311                 }
1312
1313                 if ( $user->isBlockedFrom( $this->getTitle(), false ) ) {
1314                         // Auto-block user's IP if the account was "hard" blocked
1315                         $user->spreadAnyEditBlock();
1316                         # Check block state against master, thus 'false'.
1317                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1318                         wfProfileOut( __METHOD__ . '-checks' );
1319                         wfProfileOut( __METHOD__ );
1320                         return $status;
1321                 }
1322
1323                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1324                 if ( $this->kblength > $wgMaxArticleSize ) {
1325                         // Error will be displayed by showEditForm()
1326                         $this->tooBig = true;
1327                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1328                         wfProfileOut( __METHOD__ . '-checks' );
1329                         wfProfileOut( __METHOD__ );
1330                         return $status;
1331                 }
1332
1333                 if ( !$user->isAllowed( 'edit' ) ) {
1334                         if ( $user->isAnon() ) {
1335                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1336                                 wfProfileOut( __METHOD__ . '-checks' );
1337                                 wfProfileOut( __METHOD__ );
1338                                 return $status;
1339                         } else {
1340                                 $status->fatal( 'readonlytext' );
1341                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1342                                 wfProfileOut( __METHOD__ . '-checks' );
1343                                 wfProfileOut( __METHOD__ );
1344                                 return $status;
1345                         }
1346                 }
1347
1348                 if ( wfReadOnly() ) {
1349                         $status->fatal( 'readonlytext' );
1350                         $status->value = self::AS_READ_ONLY_PAGE;
1351                         wfProfileOut( __METHOD__ . '-checks' );
1352                         wfProfileOut( __METHOD__ );
1353                         return $status;
1354                 }
1355                 if ( $user->pingLimiter() ) {
1356                         $status->fatal( 'actionthrottledtext' );
1357                         $status->value = self::AS_RATE_LIMITED;
1358                         wfProfileOut( __METHOD__ . '-checks' );
1359                         wfProfileOut( __METHOD__ );
1360                         return $status;
1361                 }
1362
1363                 # If the article has been deleted while editing, don't save it without
1364                 # confirmation
1365                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1366                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1367                         wfProfileOut( __METHOD__ . '-checks' );
1368                         wfProfileOut( __METHOD__ );
1369                         return $status;
1370                 }
1371
1372                 wfProfileOut( __METHOD__ . '-checks' );
1373
1374                 # Load the page data from the master. If anything changes in the meantime,
1375                 # we detect it by using page_latest like a token in a 1 try compare-and-swap.
1376                 $this->getArticle()->loadPageData( 'fromdbmaster' );
1377                 $new = !$this->getArticle()->exists();
1378
1379                 if ( $new ) {
1380                         // Late check for create permission, just in case *PARANOIA*
1381                         if ( !$this->getTitle()->userCan( 'create', $user ) ) {
1382                                 $status->fatal( 'nocreatetext' );
1383                                 $status->value = self::AS_NO_CREATE_PERMISSION;
1384                                 wfDebug( __METHOD__ . ": no create permission\n" );
1385                                 wfProfileOut( __METHOD__ );
1386                                 return $status;
1387                         }
1388
1389                         # Don't save a new article if it's blank.
1390                         if ( $this->textbox1 == '' ) {
1391                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
1392                                 wfProfileOut( __METHOD__ );
1393                                 return $status;
1394                         }
1395
1396                         // Run post-section-merge edit filter
1397                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
1398                                 # Error messages etc. could be handled within the hook...
1399                                 $status->fatal( 'hookaborted' );
1400                                 $status->value = self::AS_HOOK_ERROR;
1401                                 wfProfileOut( __METHOD__ );
1402                                 return $status;
1403                         } elseif ( $this->hookError != '' ) {
1404                                 # ...or the hook could be expecting us to produce an error
1405                                 $status->fatal( 'hookaborted' );
1406                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1407                                 wfProfileOut( __METHOD__ );
1408                                 return $status;
1409                         }
1410
1411                         $content = $textbox_content;
1412
1413                         $result['sectionanchor'] = '';
1414                         if ( $this->section == 'new' ) {
1415                                 if ( $this->sectiontitle !== '' ) {
1416                                         // Insert the section title above the content.
1417                                         $content = $content->addSectionHeader( $this->sectiontitle );
1418
1419                                         // Jump to the new section
1420                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1421
1422                                         // If no edit summary was specified, create one automatically from the section
1423                                         // title and have it link to the new section. Otherwise, respect the summary as
1424                                         // passed.
1425                                         if ( $this->summary === '' ) {
1426                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1427                                                 $this->summary = $context->msg( 'newsectionsummary' )
1428                                                         ->rawParams( $cleanSectionTitle )->inContentLanguage()->text();
1429                                         }
1430                                 } elseif ( $this->summary !== '' ) {
1431                                         // Insert the section title above the content.
1432                                         $content = $content->addSectionHeader( $this->summary );
1433
1434                                         // Jump to the new section
1435                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1436
1437                                         // Create a link to the new section from the edit summary.
1438                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1439                                         $this->summary = $context->msg( 'newsectionsummary' )
1440                                                 ->rawParams( $cleanSummary )->inContentLanguage()->text();
1441                                 }
1442                         }
1443
1444                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1445                 } else { # not $new
1446                         # Article exists. Check for edit conflict.
1447
1448                         $this->getArticle()->clear(); # Force reload of dates, etc.
1449                         $timestamp = $this->getArticle()->getTimestamp();
1450
1451                         wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
1452
1453                         if ( $timestamp != $this->edittime ) {
1454                                 $this->isConflict = true;
1455                                 if ( $this->section == 'new' ) {
1456                                         if ( $this->getArticle()->getUserText() == $user->getName() &&
1457                                                 $this->getArticle()->getComment() == $this->summary ) {
1458                                                 // Probably a duplicate submission of a new comment.
1459                                                 // This can happen when squid resends a request after
1460                                                 // a timeout but the first one actually went through.
1461                                                 wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
1462                                         } else {
1463                                                 // New comment; suppress conflict.
1464                                                 $this->isConflict = false;
1465                                                 wfDebug( __METHOD__ . ": conflict suppressed; new section\n" );
1466                                         }
1467                                 } elseif ( $this->section == '' ) {
1468                                         $userWasLastToEdit = Revision::userWasLastToEdit(
1469                                                 DB_MASTER,
1470                                                 $this->getTitle()->getArticleID(),
1471                                                 $user->getId(),
1472                                                 $this->edittime
1473                                         );
1474
1475                                         if ( $userWasLastToEdit ) {
1476                                                 # Suppress edit conflict with self, except for section edits where merging is required.
1477                                                 wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1478                                                 $this->isConflict = false;
1479                                         }
1480                                 }
1481                         }
1482
1483                         // If sectiontitle is set, use it, otherwise use the summary as the section title (for
1484                         // backwards compatibility with old forms/bots).
1485                         if ( $this->sectiontitle !== '' ) {
1486                                 $sectionTitle = $this->sectiontitle;
1487                         } else {
1488                                 $sectionTitle = $this->summary;
1489                         }
1490
1491                         $content = null;
1492
1493                         if ( $this->isConflict ) {
1494                                 wfDebug( __METHOD__ . ": conflict! getting section '{$this->section}' for time '{$this->edittime}'"
1495                                                 . " (article time '{$timestamp}')\n" );
1496
1497                                 $content = $this->getArticle()->replaceSectionContent( $this->section, $textbox_content, $sectionTitle, $this->edittime );
1498                         } else {
1499                                 wfDebug( __METHOD__ . ": getting section '{$this->section}'\n" );
1500                                 $content = $this->getArticle()->replaceSectionContent( $this->section, $textbox_content, $sectionTitle );
1501                         }
1502
1503                         if ( is_null( $content ) ) {
1504                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1505                                 $this->isConflict = true;
1506                                 $content = $textbox_content; // do not try to merge here!
1507                         } elseif ( $this->isConflict ) {
1508                                 $contentObj = $content;
1509                                 # Attempt merge
1510                                 if ( $this->mergeChangesInto( $content ) ) {
1511                                         // Successful merge! Maybe we should tell the user the good news?
1512                                         $this->isConflict = false;
1513                                         $content = $this->toEditContent( $content );
1514                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1515                                 } else {
1516                                         $this->section = '';
1517                                         $this->textbox1 = ContentHandler::getContentText( $contentObj );
1518                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1519                                 }
1520                         }
1521
1522                         if ( $this->isConflict ) {
1523                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
1524                                 wfProfileOut( __METHOD__ );
1525                                 return $status;
1526                         }
1527
1528                         // Run post-section-merge edit filter
1529                         $hook_args = array( $this, $content, &$this->hookError, $this->summary );
1530
1531                         if ( !ContentHandler::runLegacyHooks( 'EditFilterMerged', $hook_args )
1532                                 || !wfRunHooks( 'EditFilterMergedContent', $hook_args ) ) {
1533                                 # Error messages etc. could be handled within the hook...
1534                                 $status->fatal( 'hookaborted' );
1535                                 $status->value = self::AS_HOOK_ERROR;
1536                                 wfProfileOut( __METHOD__ );
1537                                 return $status;
1538                         } elseif ( $this->hookError != '' ) {
1539                                 # ...or the hook could be expecting us to produce an error
1540                                 $status->fatal( 'hookaborted' );
1541                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1542                                 wfProfileOut( __METHOD__ );
1543                                 return $status;
1544                         }
1545
1546                         # Handle the user preference to force summaries here, but not for null edits
1547                         if ( $this->section != 'new' && !$this->allowBlankSummary
1548                                 && !$content->equals( $this->getOriginalContent() )
1549                                 && !$content->isRedirect() ) # check if it's not a redirect
1550                         {
1551                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1552                                         $this->missingSummary = true;
1553                                         $status->fatal( 'missingsummary' );
1554                                         $status->value = self::AS_SUMMARY_NEEDED;
1555                                         wfProfileOut( __METHOD__ );
1556                                         return $status;
1557                                 }
1558                         }
1559
1560                         # And a similar thing for new sections
1561                         if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1562                                 if ( trim( $this->summary ) == '' ) {
1563                                         $this->missingSummary = true;
1564                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1565                                         $status->value = self::AS_SUMMARY_NEEDED;
1566                                         wfProfileOut( __METHOD__ );
1567                                         return $status;
1568                                 }
1569                         }
1570
1571                         # All's well
1572                         wfProfileIn( __METHOD__ . '-sectionanchor' );
1573                         $sectionanchor = '';
1574                         if ( $this->section == 'new' ) {
1575                                 if ( $this->textbox1 == '' ) {
1576                                         $this->missingComment = true;
1577                                         $status->fatal( 'missingcommenttext' );
1578                                         $status->value = self::AS_TEXTBOX_EMPTY;
1579                                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1580                                         wfProfileOut( __METHOD__ );
1581                                         return $status;
1582                                 }
1583                                 if ( $this->sectiontitle !== '' ) {
1584                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1585                                         // If no edit summary was specified, create one automatically from the section
1586                                         // title and have it link to the new section. Otherwise, respect the summary as
1587                                         // passed.
1588                                         if ( $this->summary === '' ) {
1589                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1590                                                 $this->summary = $context->msg( 'newsectionsummary' )
1591                                                         ->rawParams( $cleanSectionTitle )->inContentLanguage()->text();
1592                                         }
1593                                 } elseif ( $this->summary !== '' ) {
1594                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1595                                         # This is a new section, so create a link to the new section
1596                                         # in the revision summary.
1597                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1598                                         $this->summary = $context->msg( 'newsectionsummary' )
1599                                                 ->rawParams( $cleanSummary )->inContentLanguage()->text();
1600                                 }
1601                         } elseif ( $this->section != '' ) {
1602                                 # Try to get a section anchor from the section source, redirect to edited section if header found
1603                                 # XXX: might be better to integrate this into Article::replaceSection
1604                                 # for duplicate heading checking and maybe parsing
1605                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1606                                 # we can't deal with anchors, includes, html etc in the header for now,
1607                                 # headline would need to be parsed to improve this
1608                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1609                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1610                                 }
1611                         }
1612                         $result['sectionanchor'] = $sectionanchor;
1613                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1614
1615                         // Save errors may fall down to the edit form, but we've now
1616                         // merged the section into full text. Clear the section field
1617                         // so that later submission of conflict forms won't try to
1618                         // replace that into a duplicated mess.
1619                         $this->textbox1 = $this->toEditText( $content );
1620                         $this->section = '';
1621
1622                         $status->value = self::AS_SUCCESS_UPDATE;
1623                 }
1624
1625                 // Check for length errors again now that the section is merged in
1626                         $this->kblength = (int)( strlen( $this->toEditText( $content ) ) / 1024 );
1627                 if ( $this->kblength > $wgMaxArticleSize ) {
1628                         $this->tooBig = true;
1629                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1630                         wfProfileOut( __METHOD__ );
1631                         return $status;
1632                 }
1633
1634                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1635                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1636                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1637                         ( $bot ? EDIT_FORCE_BOT : 0 );
1638
1639                         $doEditStatus = $this->getArticle()->doEditContent( $content, $this->summary, $flags,
1640                                 false, null, $this->contentFormat );
1641
1642                 if ( $doEditStatus->isOK() ) {
1643                                 $result['redirect'] = $content->isRedirect();
1644                         $this->updateWatchlist();
1645                         wfProfileOut( __METHOD__ );
1646                         return $status;
1647                 } else {
1648                         // Failure from doEdit()
1649                         // Show the edit conflict page for certain recognized errors from doEdit(),
1650                         // but don't show it for errors from extension hooks
1651                         $errors = $doEditStatus->getErrorsArray();
1652                         if ( in_array( $errors[0][0], array( 'edit-gone-missing', 'edit-conflict',
1653                                 'edit-already-exists' ) ) )
1654                         {
1655                                 $this->isConflict = true;
1656                                 // Destroys data doEdit() put in $status->value but who cares
1657                                 $doEditStatus->value = self::AS_END;
1658                         }
1659                         wfProfileOut( __METHOD__ );
1660                         return $doEditStatus;
1661                 }
1662         }
1663
1664         /**
1665          * Register the change of watch status
1666          */
1667         protected function updateWatchlist() {
1668                 $title = $this->getTitle();
1669                 $user = $this->getArticle()->getContext()->getUser();
1670
1671                 if ( $user->isLoggedIn() && $this->watchthis != $user->isWatched( $title ) ) {
1672                         $fname = __METHOD__;
1673                         $watch = $this->watchthis;
1674
1675                         // Do this in its own transaction to reduce contention...
1676                         $dbw = wfGetDB( DB_MASTER );
1677                         $dbw->onTransactionIdle( function() use ( $dbw, $title, $watch, $user, $fname ) {
1678                                 $dbw->begin( $fname );
1679                                 if ( $watch ) {
1680                                         WatchAction::doWatch( $title, $user );
1681                                 } else {
1682                                         WatchAction::doUnwatch( $title, $user );
1683                                 }
1684                                 $dbw->commit( $fname );
1685                         } );
1686                 }
1687         }
1688
1689         /**
1690          * @private
1691          * @todo document
1692          *
1693          * @param $editText string
1694          *
1695          * @return bool
1696          * @deprecated since 1.21, use mergeChangesIntoContent() instead
1697          */
1698         function mergeChangesInto( &$editText ){
1699                 ContentHandler::deprecated( __METHOD__, "1.21" );
1700
1701                 wfProfileIn( __METHOD__ );
1702
1703                 $db = wfGetDB( DB_MASTER );
1704
1705                 // This is the revision the editor started from
1706                 $baseRevision = $this->getBaseRevision();
1707                 if ( is_null( $baseRevision ) ) {
1708                         wfProfileOut( __METHOD__ );
1709                         return false;
1710                 }
1711                 $baseText = $baseRevision->getText();
1712
1713                 // The current state, we want to merge updates into it
1714                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1715                 if ( is_null( $currentRevision ) ) {
1716                         wfProfileOut( __METHOD__ );
1717                         return false;
1718                 }
1719                 $currentText = $currentRevision->getText();
1720
1721                 $result = '';
1722                 $editText = $this->toEditText( $editText );
1723
1724                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
1725                         $editText = $result;
1726                         wfProfileOut( __METHOD__ );
1727                         return true;
1728                 }
1729
1730                 wfProfileOut( __METHOD__ );
1731                 return false;
1732         }
1733
1734         /**
1735          * @private
1736          * @todo document
1737          *
1738          * @param $editContent
1739          * @return bool
1740          * @since since 1.WD
1741          */
1742         private function mergeChangesIntoContent( &$editContent ){
1743                 wfProfileIn( __METHOD__ );
1744
1745                 $db = wfGetDB( DB_MASTER );
1746
1747                 // This is the revision the editor started from
1748                 $baseRevision = $this->getBaseRevision();
1749                 $baseContent = $baseRevision ? $baseRevision->getContent() : null;
1750
1751                 if ( is_null( $baseContent ) ) {
1752                         wfProfileOut( __METHOD__ );
1753                         return false;
1754                 }
1755
1756                 // The current state, we want to merge updates into it
1757                 $currentRevision = Revision::loadFromTitle( $db, $this->getTitle() );
1758                 $currentContent = $currentRevision ? $currentRevision->getContent() : null;
1759
1760                 if ( is_null( $currentContent ) ) {
1761                         wfProfileOut( __METHOD__ );
1762                         return false;
1763                 }
1764
1765                 $handler = ContentHandler::getForModelID( $baseContent->getModel() );
1766
1767                 $result = $handler->merge3( $baseContent, $editContent, $currentContent );
1768
1769                 if ( $result ) {
1770                         $editContent = $result;
1771                         wfProfileOut( __METHOD__ );
1772                         return true;
1773                 }
1774
1775                 wfProfileOut( __METHOD__ );
1776                 return false;
1777         }
1778
1779         /**
1780          * @return Revision
1781          */
1782         function getBaseRevision() {
1783                 if ( !$this->mBaseRevision ) {
1784                         $db = wfGetDB( DB_MASTER );
1785                         $baseRevision = Revision::loadFromTimestamp(
1786                                 $db, $this->getTitle(), $this->edittime );
1787                         return $this->mBaseRevision = $baseRevision;
1788                 } else {
1789                         return $this->mBaseRevision;
1790                 }
1791         }
1792
1793         /**
1794          * Check given input text against $wgSpamRegex, and return the text of the first match.
1795          *
1796          * @param $text string
1797          *
1798          * @return string|bool matching string or false
1799          */
1800         public static function matchSpamRegex( $text ) {
1801                 global $wgSpamRegex;
1802                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1803                 $regexes = (array)$wgSpamRegex;
1804                 return self::matchSpamRegexInternal( $text, $regexes );
1805         }
1806
1807         /**
1808          * Check given input text against $wgSpamRegex, and return the text of the first match.
1809          *
1810          * @param $text string
1811          *
1812          * @return string|bool  matching string or false
1813          */
1814         public static function matchSummarySpamRegex( $text ) {
1815                 global $wgSummarySpamRegex;
1816                 $regexes = (array)$wgSummarySpamRegex;
1817                 return self::matchSpamRegexInternal( $text, $regexes );
1818         }
1819
1820         /**
1821          * @param $text string
1822          * @param $regexes array
1823          * @return bool|string
1824          */
1825         protected static function matchSpamRegexInternal( $text, $regexes ) {
1826                 foreach ( $regexes as $regex ) {
1827                         $matches = array();
1828                         if ( preg_match( $regex, $text, $matches ) ) {
1829                                 return $matches[0];
1830                         }
1831                 }
1832
1833                 return false;
1834         }
1835
1836         function setHeaders() {
1837                 $context = $this->getArticle()->getContext();
1838                 $out = $context->getOutput();
1839
1840                 $out->addModules( 'mediawiki.action.edit' );
1841
1842                 if ( $context->getUser()->getOption( 'uselivepreview', false ) ) {
1843                         $out->addModules( 'mediawiki.action.edit.preview' );
1844                 }
1845                 // Bug #19334: textarea jumps when editing articles in IE8
1846                 $out->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
1847
1848                 $out->setRobotPolicy( 'noindex,nofollow' );
1849
1850                 # Enabled article-related sidebar, toplinks, etc.
1851                 $out->setArticleRelated( true );
1852
1853                 $contextTitle = $this->getContextTitle();
1854                 if ( $this->isConflict ) {
1855                         $msg = 'editconflict';
1856                 } elseif ( $contextTitle->exists() && $this->section != '' ) {
1857                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1858                 } else {
1859                         $msg = $contextTitle->exists() || ( $contextTitle->getNamespace() == NS_MEDIAWIKI && $contextTitle->getDefaultMessageText() !== false ) ?
1860                                 'editing' : 'creating';
1861                 }
1862                 # Use the title defined by DISPLAYTITLE magic word when present
1863                 $displayTitle = isset( $this->mParserOutput ) ? $this->mParserOutput->getDisplayTitle() : false;
1864                 if ( $displayTitle === false ) {
1865                         $displayTitle = $contextTitle->getPrefixedText();
1866                 }
1867                 $out->setPageTitle( $context->msg( $msg, $displayTitle ) );
1868         }
1869
1870         /**
1871          * Show all applicable editing introductions
1872          */
1873         protected function showIntro() {
1874                 if ( $this->suppressIntro ) {
1875                         return;
1876                 }
1877
1878                 $namespace = $this->getTitle()->getNamespace();
1879                 $context = $this->getArticle()->getContext();
1880                 $out = $context->getOutput();
1881
1882                 if ( $namespace == NS_MEDIAWIKI ) {
1883                         # Show a warning if editing an interface message
1884                         $out->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
1885                 } else if( $namespace == NS_FILE ) {
1886                         # Show a hint to shared repo
1887                         $file = wfFindFile( $this->getTitle() );
1888                         if( $file && !$file->isLocal() ) {
1889                                 $descUrl = $file->getDescriptionUrl();
1890                                 # there must be a description url to show a hint to shared repo
1891                                 if( $descUrl ) {
1892                                         if( !$this->getTitle()->exists() ) {
1893                                                 $out->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-create\">\n$1\n</div>", array (
1894                                                                         'sharedupload-desc-create', $file->getRepo()->getDisplayName(), $descUrl
1895                                                 ) );
1896                                         } else {
1897                                                 $out->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-edit\">\n$1\n</div>", array(
1898                                                                         'sharedupload-desc-edit', $file->getRepo()->getDisplayName(), $descUrl
1899                                                 ) );
1900                                         }
1901                                 }
1902                         }
1903                 }
1904
1905                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
1906                 # Show log extract when the user is currently blocked
1907                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
1908                         $parts = explode( '/', $this->getTitle()->getText(), 2 );
1909                         $username = $parts[0];
1910                         $user = User::newFromName( $username, false /* allow IP users*/ );
1911                         $ip = User::isIP( $username );
1912                         if ( !( $user && $user->isLoggedIn() ) && !$ip ) { # User does not exist
1913                                 $out->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
1914                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
1915                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1916                                 LogEventsList::showLogExtract(
1917                                         $out,
1918                                         'block',
1919                                         $user->getUserPage(),
1920                                         '',
1921                                         array(
1922                                                 'lim' => 1,
1923                                                 'showIfEmpty' => false,
1924                                                 'msgKey' => array(
1925                                                         'blocked-notice-logextract',
1926                                                         $user->getName() # Support GENDER in notice
1927                                                 )
1928                                         )
1929                                 );
1930                         }
1931                 }
1932
1933                 # Try to add a custom edit intro, or use the standard one if this is not possible.
1934                 if ( !$this->showCustomIntro() && !$this->getTitle()->exists() ) {
1935                         if ( $context->getUser()->isLoggedIn() ) {
1936                                 $out->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
1937                         } else {
1938                                 $out->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
1939                         }
1940                 }
1941
1942                 # Give a notice if the user is editing a deleted/moved page...
1943                 if ( !$this->getTitle()->exists() ) {
1944                         LogEventsList::showLogExtract( $out, array( 'delete', 'move' ), $this->getTitle(),
1945                                 '',
1946                                 array(
1947                                         'lim' => 10,
1948                                         'conds' => array( "log_action != 'revision'" ),
1949                                         'showIfEmpty' => false,
1950                                         'msgKey' => array( 'recreate-moveddeleted-warn' )
1951                                 )
1952                         );
1953                 }
1954         }
1955
1956         /**
1957          * Attempt to show a custom editing introduction, if supplied
1958          *
1959          * @return bool
1960          */
1961         protected function showCustomIntro() {
1962                 if ( $this->editintro ) {
1963                         $title = Title::newFromText( $this->editintro );
1964
1965                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
1966                                 // Added using template syntax, to take <noinclude>'s into account.
1967                                 $this->getArticle()->getContext()->getOutput()
1968                                         ->addWikiTextTitleTidy( '{{:' . $title->getFullText() . '}}', $this->getTitle() );
1969
1970                                 return true;
1971                         }
1972                 }
1973
1974                 return false;
1975         }
1976
1977         /**
1978          * Gets an editable textual representation of $content.
1979          * The textual representation can be turned by into a Content object by the
1980          * toEditContent() method.
1981          *
1982          * If $content is null or false or a string, $content is returned unchanged.
1983          *
1984          * If the given Content object is not of a type that can be edited using the text base EditPage,
1985          * an exception will be raised. Set $this->allowNonTextContent to true to allow editing of non-textual
1986          * content.
1987          *
1988          * @param Content|null|bool|string $content
1989          * @return String the editable text form of the content.
1990          *
1991          * @throws MWException if $content is not an instance of TextContent and $this->allowNonTextContent is not true.
1992          */
1993         protected function toEditText( $content ) {
1994                 if ( $content === null || $content === false ) {
1995                         return $content;
1996                 }
1997
1998                 if ( is_string( $content ) ) {
1999                         return $content;
2000                 }
2001
2002                 if ( !$this->allowNonTextContent && !( $content instanceof TextContent ) ) {
2003                         throw new MWException( "This content model can not be edited as text: "
2004                                                                 . ContentHandler::getLocalizedName( $content->getModel() ) );
2005                 }
2006
2007                 return $content->serialize( $this->contentFormat );
2008         }
2009
2010         /**
2011          * Turns the given text into a Content object by unserializing it.
2012          *
2013          * If the resulting Content object is not of a type that can be edited using the text base EditPage,
2014          * an exception will be raised. Set $this->allowNonTextContent to true to allow editing of non-textual
2015          * content.
2016          *
2017          * @param String|null|bool $text Text to unserialize
2018          * @return Content The content object created from $text. If $text was false or null, false resp. null will be
2019          *                 returned instead.
2020          *
2021          * @throws MWException if unserializing the text results in a Content object that is not an instance of TextContent
2022          *          and $this->allowNonTextContent is not true.
2023          */
2024         protected function toEditContent( $text ) {
2025                 if ( $text === false || $text === null ) {
2026                         return $text;
2027                 }
2028
2029                 $content = ContentHandler::makeContent( $text, $this->getTitle(),
2030                         $this->contentModel, $this->contentFormat );
2031
2032                 if ( !$this->allowNonTextContent && !( $content instanceof TextContent ) ) {
2033                         throw new MWException( "This content model can not be edited as text: "
2034                                 . ContentHandler::getLocalizedName( $content->getModel() ) );
2035                 }
2036
2037                 return $content;
2038         }
2039
2040         /**
2041          * Send the edit form and related headers to $wgOut
2042          * @param $formCallback Callback|null that takes an OutputPage parameter; will be called
2043          *     during form output near the top, for captchas and the like.
2044          */
2045         function showEditForm( $formCallback = null ) {
2046                 wfProfileIn( __METHOD__ );
2047
2048                 # need to parse the preview early so that we know which templates are used,
2049                 # otherwise users with "show preview after edit box" will get a blank list
2050                 # we parse this near the beginning so that setHeaders can do the title
2051                 # setting work instead of leaving it in getPreviewText
2052                 $previewOutput = '';
2053                 if ( $this->formtype == 'preview' ) {
2054                         $previewOutput = $this->getPreviewText();
2055                 }
2056
2057                 $context = $this->getArticle()->getContext();
2058                 $out = $context->getOutput();
2059                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this, &$out ) );
2060
2061                 $this->setHeaders();
2062
2063                 if ( $this->showHeader() === false ) {
2064                         wfProfileOut( __METHOD__ );
2065                         return;
2066                 }
2067
2068                 $out->addHTML( $this->editFormPageTop );
2069
2070                 if ( $context->getUser()->getOption( 'previewontop' ) ) {
2071                         $this->displayPreviewArea( $previewOutput, true );
2072                 }
2073
2074                 $out->addHTML( $this->editFormTextTop );
2075
2076                 $showToolbar = true;
2077                 if ( $this->wasDeletedSinceLastEdit() ) {
2078                         if ( $this->formtype == 'save' ) {
2079                                 // Hide the toolbar and edit area, user can click preview to get it back
2080                                 // Add an confirmation checkbox and explanation.
2081                                 $showToolbar = false;
2082                         } else {
2083                                 $out->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
2084                                         'deletedwhileediting' );
2085                         }
2086                 }
2087
2088                 // @todo Add EditForm plugin interface and use it here!
2089                 //       search for textarea1 and textares2, and allow EditForm to override all uses.
2090                 $out->addHTML( Html::openElement( 'form', array( 'id' => self::EDITFORM_ID, 'name' => self::EDITFORM_ID,
2091                         'method' => 'post', 'action' => $this->getActionURL( $this->getContextTitle() ),
2092                         'enctype' => 'multipart/form-data' ) ) );
2093
2094                 if ( is_callable( $formCallback ) ) {
2095                         call_user_func_array( $formCallback, array( &$out ) );
2096                 }
2097
2098                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$out ) );
2099
2100                 // Put these up at the top to ensure they aren't lost on early form submission
2101                 $this->showFormBeforeText();
2102
2103                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
2104                         $username = $this->lastDelete->user_name;
2105                         $comment = $this->lastDelete->log_comment;
2106
2107                         // It is better to not parse the comment at all than to have templates expanded in the middle
2108                         // @todo Can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
2109                         $key = $comment === ''
2110                                 ? 'confirmrecreate-noreason'
2111                                 : 'confirmrecreate';
2112                         $out->addHTML(
2113                                 '<div class="mw-confirm-recreate">' .
2114                                         $context->msg( $key, $username, "<nowiki>$comment</nowiki>" )->parse() .
2115                                 Xml::checkLabel( $context->msg( 'recreate' )->text(), 'wpRecreate', 'wpRecreate', false,
2116                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
2117                                 ) .
2118                                 '</div>'
2119                         );
2120                 }
2121
2122                 # When the summary is hidden, also hide them on preview/show changes
2123                 if( $this->nosummary ) {
2124                         $out->addHTML( Html::hidden( 'nosummary', true ) );
2125                 }
2126
2127                 # If a blank edit summary was previously provided, and the appropriate
2128                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
2129                 # user being bounced back more than once in the event that a summary
2130                 # is not required.
2131                 #####
2132                 # For a bit more sophisticated detection of blank summaries, hash the
2133                 # automatic one and pass that in the hidden field wpAutoSummary.
2134                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
2135                         $out->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
2136                 }
2137
2138                 if ( $this->undidRev ) {
2139                         $out->addHTML( Html::hidden( 'wpUndidRevision', $this->undidRev ) );
2140                 }
2141
2142                 if ( $this->hasPresetSummary ) {
2143                         // If a summary has been preset using &summary= we dont want to prompt for
2144                         // a different summary. Only prompt for a summary if the summary is blanked.
2145                         // (Bug 17416)
2146                         $this->autoSumm = md5( '' );
2147                 }
2148
2149                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
2150                 $out->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
2151
2152                 $out->addHTML( Html::hidden( 'oldid', $this->oldid ) );
2153
2154                 $out->addHTML( Html::hidden( 'format', $this->contentFormat ) );
2155                 $out->addHTML( Html::hidden( 'model', $this->contentModel ) );
2156
2157                 if ( $this->section == 'new' ) {
2158                         $this->showSummaryInput( true, $this->summary );
2159                         $out->addHTML( $this->getSummaryPreview( true, $this->summary ) );
2160                 }
2161
2162                 $out->addHTML( $this->editFormTextBeforeContent );
2163
2164                 if ( !$this->isCssJsSubpage && $showToolbar && $context->getUser()->getOption( 'showtoolbar' ) ) {
2165                         $out->addHTML( EditPage::getEditToolbar() );
2166                 }
2167
2168                 if ( $this->isConflict ) {
2169                         // In an edit conflict bypass the overrideable content form method
2170                         // and fallback to the raw wpTextbox1 since editconflicts can't be
2171                         // resolved between page source edits and custom ui edits using the
2172                         // custom edit ui.
2173                         $this->textbox2 = $this->textbox1;
2174
2175                         $content = $this->getCurrentContent();
2176                         $this->textbox1 = $this->toEditText( $content );
2177
2178                         $this->showTextbox1();
2179                 } else {
2180                         $this->showContentForm();
2181                 }
2182
2183                 $out->addHTML( $this->editFormTextAfterContent );
2184
2185                 $this->showStandardInputs();
2186                 $this->showFormAfterText();
2187                 $this->showTosSummary();
2188                 $this->showEditTools();
2189
2190                 $out->addHTML( $this->editFormTextAfterTools . "\n" );
2191
2192                 $out->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
2193                         Linker::formatTemplates( $this->getTemplates(), $this->preview, $this->section != '' ) ) );
2194
2195                 $out->addHTML( Html::rawElement( 'div', array( 'class' => 'hiddencats' ),
2196                         Linker::formatHiddenCategories( $this->getArticle()->getHiddenCategories() ) ) );
2197
2198                 if ( $this->isConflict ) {
2199                         try {
2200                                 $this->showConflict();
2201                         } catch ( MWContentSerializationException $ex ) {
2202                                 // this can't really happen, but be nice if it does.
2203                                 $msg = $context->msg( 'content-failed-to-parse', $this->contentModel, $this->contentFormat, $ex->getMessage() );
2204                                 $out->addWikiText( '<div class="error">' . $msg->text() . '</div>');
2205                         }
2206                 }
2207
2208                 $out->addHTML( $this->editFormTextBottom . "\n</form>\n" );
2209
2210                 if ( !$context->getUser()->getOption( 'previewontop' ) ) {
2211                         $this->displayPreviewArea( $previewOutput, false );
2212                 }
2213
2214                 wfProfileOut( __METHOD__ );
2215         }
2216
2217         /**
2218          * Extract the section title from current section text, if any.
2219          *
2220          * @param string $text
2221          * @return Mixed|string or false
2222          */
2223         public static function extractSectionTitle( $text ) {
2224                 preg_match( "/^(=+)(.+)\\1\\s*(\n|$)/i", $text, $matches );
2225                 if ( !empty( $matches[2] ) ) {
2226                         global $wgParser;
2227                         return $wgParser->stripSectionName( trim( $matches[2] ) );
2228                 } else {
2229                         return false;
2230                 }
2231         }
2232
2233         protected function showHeader() {
2234                 global $wgMaxArticleSize;
2235
2236                 $context = $this->getArticle()->getContext();
2237                 $out = $context->getOutput();
2238                 $title = $this->getTitle();
2239
2240                 if ( $title->isTalkPage() ) {
2241                         $out->addWikiMsg( 'talkpagetext' );
2242                 }
2243
2244                 # Optional notices on a per-namespace and per-page basis
2245                 $editnotice_ns = 'editnotice-' . $title->getNamespace();
2246                 $editnotice_ns_message = $context->msg( $editnotice_ns );
2247                 if ( $editnotice_ns_message->exists() ) {
2248                         $out->addWikiText( $editnotice_ns_message->plain() );
2249                 }
2250
2251                 if ( MWNamespace::hasSubpages( $title->getNamespace() ) ) {
2252                         $parts = explode( '/', $title->getDBkey() );
2253                         $editnotice_base = $editnotice_ns;
2254
2255                         while ( count( $parts ) > 0 ) {
2256                                 $editnotice_base .= '-' . array_shift( $parts );
2257                                 $editnotice_base_msg = $context->msg( $editnotice_base );
2258                                 if ( $editnotice_base_msg->exists() ) {
2259                                         $out->addWikiText( $editnotice_base_msg->plain() );
2260                                 }
2261                         }
2262                 } else {
2263                         # Even if there are no subpages in namespace, we still don't want / in MW ns.
2264                         $editnoticeText = $editnotice_ns . '-' . str_replace( '/', '-', $title->getDBkey() );
2265                         $editnoticeMsg = $context->msg( $editnoticeText );
2266                         if ( $editnoticeMsg->exists() ) {
2267                                 $out->addWikiText( $editnoticeMsg->plain() );
2268                         }
2269                 }
2270
2271                 if ( $this->isConflict ) {
2272                         $out->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
2273                         $this->edittime = $this->getArticle()->getTimestamp();
2274                 } else {
2275                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
2276                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
2277                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
2278                                 // Someone is welcome to try refactoring though
2279                                 $out->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
2280                                 return false;
2281                         }
2282
2283                         if ( $this->section != '' && $this->section != 'new' ) {
2284                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
2285                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 ); //FIXME: use Content object
2286                                         if ( $sectionTitle !== false ) {
2287                                                 $this->summary = "/* $sectionTitle */ ";
2288                                         }
2289                                 }
2290                         }
2291
2292                         if ( $this->missingComment ) {
2293                                 $out->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
2294                         }
2295
2296                         if ( $this->missingSummary && $this->section != 'new' ) {
2297                                 $out->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
2298                         }
2299
2300                         if ( $this->missingSummary && $this->section == 'new' ) {
2301                                 $out->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
2302                         }
2303
2304                         if ( $this->hookError !== '' ) {
2305                                 $out->addWikiText( $this->hookError );
2306                         }
2307
2308                         if ( !$this->checkUnicodeCompliantBrowser() ) {
2309                                 $out->addWikiMsg( 'nonunicodebrowser' );
2310                         }
2311
2312                         if ( $this->section != 'new' ) {
2313                                 $revision = $this->getArticle()->getRevisionFetched();
2314                                 if ( $revision ) {
2315                                         // Let sysop know that this will make private content public if saved
2316
2317                                         if ( !$revision->userCan( Revision::DELETED_TEXT, $context->getUser() ) ) {
2318                                                 $out->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
2319                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
2320                                                 $out->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
2321                                         }
2322
2323                                         if ( !$revision->isCurrent() ) {
2324                                                 $this->getArticle()->setOldSubtitle( $revision->getId() );
2325                                                 $out->addWikiMsg( 'editingold' );
2326                                         }
2327                                 } elseif ( $title->exists() ) {
2328                                         // Something went wrong
2329
2330                                         $out->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
2331                                                 array( 'missing-revision', $this->oldid ) );
2332                                 }
2333                         }
2334                 }
2335
2336                 if ( wfReadOnly() ) {
2337                         $out->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
2338                 } elseif ( $context->getUser()->isAnon() ) {
2339                         if ( $this->formtype != 'preview' ) {
2340                                 $out->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
2341                         } else {
2342                                 $out->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
2343                         }
2344                 } else {
2345                         if ( $this->isCssJsSubpage ) {
2346                                 # Check the skin exists
2347                                 if ( $this->isWrongCaseCssJsPage ) {
2348                                         $out->wrapWikiMsg(
2349                                                 "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>",
2350                                                 array( 'userinvalidcssjstitle', $title->getSkinFromCssJsSubpage() )
2351                                         );
2352                                 }
2353                                 if ( $this->formtype !== 'preview' ) {
2354                                         if ( $this->isCssSubpage ) {
2355                                                 $out->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
2356                                         }
2357
2358                                         if ( $this->isJsSubpage ) {
2359                                                 $out->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
2360                                         }
2361                                 }
2362                         }
2363                 }
2364
2365                 if ( $title->getNamespace() != NS_MEDIAWIKI && $title->isProtected( 'edit' ) ) {
2366                         # Is the title semi-protected?
2367                         if ( $title->isSemiProtected() ) {
2368                                 $noticeMsg = 'semiprotectedpagewarning';
2369                         } else {
2370                                 # Then it must be protected based on static groups (regular)
2371                                 $noticeMsg = 'protectedpagewarning';
2372                         }
2373                         LogEventsList::showLogExtract( $out, 'protect', $title, '',
2374                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
2375                 }
2376
2377                 if ( $title->isCascadeProtected() ) {
2378                         # Is this page under cascading protection from some source pages?
2379                         list( $cascadeSources, /* $restrictions */ ) = $title->getCascadeProtectionSources();
2380                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
2381                         $cascadeSourcesCount = count( $cascadeSources );
2382                         if ( $cascadeSourcesCount > 0 ) {
2383                                 # Explain, and list the titles responsible
2384                                 foreach ( $cascadeSources as $page ) {
2385                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
2386                                 }
2387                         }
2388                         $notice .= '</div>';
2389                         $out->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
2390                 }
2391
2392                 if ( !$title->exists() && $title->getRestrictions( 'create' ) ) {
2393                         LogEventsList::showLogExtract( $out, 'protect', $title, '',
2394                                 array( 'lim' => 1,
2395                                         'showIfEmpty' => false,
2396                                         'msgKey' => array( 'titleprotectedwarning' ),
2397                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
2398                 }
2399
2400                 if ( $this->kblength === false ) {
2401                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
2402                 }
2403
2404                 $lang = $context->getLanguage();
2405                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
2406                         $out->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
2407                                 array( 'longpageerror', $lang->formatNum( $this->kblength ), $lang->formatNum( $wgMaxArticleSize ) ) );
2408                 } else {
2409                         if ( !$context->msg( 'longpage-hint' )->isDisabled() ) {
2410                                 $out->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
2411                                         array( 'longpage-hint', $lang->formatSize( strlen( $this->textbox1 ) ), strlen( $this->textbox1 ) )
2412                                 );
2413                         }
2414                 }
2415
2416                 # Add header copyright warning
2417                 $this->showHeaderCopyrightWarning();
2418         }
2419
2420         /**
2421          * Standard summary input and label (wgSummary), abstracted so EditPage
2422          * subclasses may reorganize the form.
2423          * Note that you do not need to worry about the label's for=, it will be
2424          * inferred by the id given to the input. You can remove them both by
2425          * passing array( 'id' => false ) to $userInputAttrs.
2426          *
2427          * @param $summary string The value of the summary input
2428          * @param $labelText string The html to place inside the label
2429          * @param $inputAttrs array of attrs to use on the input
2430          * @param $spanLabelAttrs array of attrs to use on the span inside the label
2431          *
2432          * @return array An array in the format array( $label, $input )
2433          */
2434         function getSummaryInput( $summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null ) {
2435                 // Note: the maxlength is overriden in JS to 255 and to make it use UTF-8 bytes, not characters.
2436                 $inputAttrs = ( is_array( $inputAttrs ) ? $inputAttrs : array() ) + array(
2437                         'id' => 'wpSummary',
2438                         'maxlength' => '200',
2439                         'tabindex' => '1',
2440                         'size' => 60,
2441                         'spellcheck' => 'true',
2442                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
2443
2444                 $spanLabelAttrs = ( is_array( $spanLabelAttrs ) ? $spanLabelAttrs : array() ) + array(
2445                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
2446                         'id' => "wpSummaryLabel"
2447                 );
2448
2449                 $label = null;
2450                 if ( $labelText ) {
2451                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
2452                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
2453                 }
2454
2455                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
2456
2457                 return array( $label, $input );
2458         }
2459
2460         /**
2461          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2462          *                          up top, or false if this is the comment summary
2463          *                          down below the textarea
2464          * @param $summary String: The text of the summary to display
2465          * @return String
2466          */
2467         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
2468                 global $wgContLang;
2469                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
2470                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
2471                 if ( $isSubjectPreview ) {
2472                         if ( $this->nosummary ) {
2473                                 return;
2474                         }
2475                 } else {
2476                         if ( !$this->mShowSummaryField ) {
2477                                 return;
2478                         }
2479                 }
2480
2481                 $context = $this->getArticle()->getContext();
2482                 $summary = $wgContLang->recodeForEdit( $summary );
2483                 $labelText = $context->msg( $isSubjectPreview ? 'subject' : 'summary' )->parse();
2484                 list( $label, $input ) = $this->getSummaryInput(
2485                         $summary,
2486                         $labelText,
2487                         array( 'class' => $summaryClass ),
2488                         array()
2489                 );
2490                 $context->getOutput()->addHTML( "{$label} {$input}" );
2491         }
2492
2493         /**
2494          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2495          *                          up top, or false if this is the comment summary
2496          *                          down below the textarea
2497          * @param $summary String: the text of the summary to display
2498          * @return String
2499          */
2500         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
2501                 if ( !$summary || ( !$this->preview && !$this->diff ) ) {
2502                         return "";
2503                 }
2504
2505                 global $wgParser;
2506
2507                 $context = $this->getArticle()->getContext();
2508                 if ( $isSubjectPreview ) {
2509                         $summary = $context->msg( 'newsectionsummary', $wgParser->stripSectionName( $summary ) )
2510                                 ->inContentLanguage()->text();
2511                 }
2512
2513                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
2514
2515                 $summary = $context->msg( $message )->parse() .
2516                         Linker::commentBlock( $summary, $this->getTitle(), $isSubjectPreview );
2517                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
2518         }
2519
2520         protected function showFormBeforeText() {
2521                 $out = $this->getArticle()->getContext()->getOutput();
2522                 $section = htmlspecialchars( $this->section );
2523
2524                 $out->addHTML( <<<HTML
2525 <input type='hidden' value="{$section}" name="wpSection" />
2526 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
2527 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
2528 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
2529
2530 HTML
2531                 );
2532
2533                 if ( !$this->checkUnicodeCompliantBrowser() ) {
2534                         $out->addHTML( Html::hidden( 'safemode', '1' ) );
2535                 }
2536         }
2537
2538         protected function showFormAfterText() {
2539                 $out = $this->getArticle()->getContext()->getOutput();
2540                 $user = $this->getArticle()->getContext()->getUser();
2541                 /**
2542                  * To make it harder for someone to slip a user a page
2543                  * which submits an edit form to the wiki without their
2544                  * knowledge, a random token is associated with the login
2545                  * session. If it's not passed back with the submission,
2546                  * we won't save the page, or render user JavaScript and
2547                  * CSS previews.
2548                  *
2549                  * For anon editors, who may not have a session, we just
2550                  * include the constant suffix to prevent editing from
2551                  * broken text-mangling proxies.
2552                  */
2553                 $out->addHTML( "\n" . Html::hidden( "wpEditToken", $user->getEditToken() ) . "\n" );
2554         }
2555
2556         /**
2557          * Subpage overridable method for printing the form for page content editing
2558          * By default this simply outputs wpTextbox1
2559          * Subclasses can override this to provide a custom UI for editing;
2560          * be it a form, or simply wpTextbox1 with a modified content that will be
2561          * reverse modified when extracted from the post data.
2562          * Note that this is basically the inverse for importContentFormData
2563          */
2564         protected function showContentForm() {
2565                 $this->showTextbox1();
2566         }
2567
2568         /**
2569          * Method to output wpTextbox1
2570          * The $textoverride method can be used by subclasses overriding showContentForm
2571          * to pass back to this method.
2572          *
2573          * @param $customAttribs array of html attributes to use in the textarea
2574          * @param $textoverride String: optional text to override $this->textarea1 with
2575          */
2576         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
2577                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
2578                         $attribs = array( 'style' => 'display:none;' );
2579                 } else {
2580                         $classes = array(); // Textarea CSS
2581                         $title = $this->getTitle();
2582
2583                         if ( $title->getNamespace() != NS_MEDIAWIKI && $title->isProtected( 'edit' ) ) {
2584                                 # Is the title semi-protected?
2585                                 if ( $title->isSemiProtected() ) {
2586                                         $classes[] = 'mw-textarea-sprotected';
2587                                 } else {
2588                                         # Then it must be protected based on static groups (regular)
2589                                         $classes[] = 'mw-textarea-protected';
2590                                 }
2591                                 # Is the title cascade-protected?
2592                                 if ( $title->isCascadeProtected() ) {
2593                                         $classes[] = 'mw-textarea-cprotected';
2594                                 }
2595                         }
2596
2597                         $attribs = array( 'tabindex' => 1 );
2598
2599                         if ( is_array( $customAttribs ) ) {
2600                                 $attribs += $customAttribs;
2601                         }
2602
2603                         if ( count( $classes ) ) {
2604                                 if ( isset( $attribs['class'] ) ) {
2605                                         $classes[] = $attribs['class'];
2606                                 }
2607                                 $attribs['class'] = implode( ' ', $classes );
2608                         }
2609                 }
2610
2611                 $this->showTextbox( $textoverride !== null ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
2612         }
2613
2614         protected function showTextbox2() {
2615                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
2616         }
2617
2618         protected function showTextbox( $text, $name, $customAttribs = array() ) {
2619                 $wikitext = $this->safeUnicodeOutput( $text );
2620                 if ( strval( $wikitext ) !== '' ) {
2621                         // Ensure there's a newline at the end, otherwise adding lines
2622                         // is awkward.
2623                         // But don't add a newline if the ext is empty, or Firefox in XHTML
2624                         // mode will show an extra newline. A bit annoying.
2625                         $wikitext .= "\n";
2626                 }
2627
2628                 $context = $this->getArticle()->getContext();
2629                 $user = $context->getUser();
2630                 $attribs = $customAttribs + array(
2631                         'accesskey' => ',',
2632                         'id'   => $name,
2633                         'cols' => $user->getIntOption( 'cols' ),
2634                         'rows' => $user->getIntOption( 'rows' ),
2635                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
2636                 );
2637
2638                 $pageLang = $this->getTitle()->getPageLanguage();
2639                 $attribs['lang'] = $pageLang->getCode();
2640                 $attribs['dir'] = $pageLang->getDir();
2641
2642                 $context->getOutput()->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
2643         }
2644
2645         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
2646                 $classes = array();
2647
2648                 if ( $isOnTop ) {
2649                         $classes[] = 'ontop';
2650                 }
2651
2652                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
2653
2654                 if ( $this->formtype != 'preview' ) {
2655                         $attribs['style'] = 'display: none;';
2656                 }
2657
2658                 $context = $this->getArticle()->getContext();
2659                 $out = $context->getOutput();
2660                 $out->addHTML( Xml::openElement( 'div', $attribs ) );
2661
2662                 if ( $this->formtype == 'preview' ) {
2663                         $this->showPreview( $previewOutput );
2664                 }
2665
2666                 $out->addHTML( '</div>' );
2667
2668                 if ( $this->formtype == 'diff' ) {
2669                         try {
2670                                 $this->showDiff();
2671                         } catch ( MWContentSerializationException $ex ) {
2672                                 $msg = $context->msg( 'content-failed-to-parse', $this->contentModel, $this->contentFormat, $ex->getMessage() );
2673                                 $out->addWikiText( '<div class="error">' . $msg->text() . '</div>');
2674                         }
2675                 }
2676         }
2677
2678         /**
2679          * Append preview output to $wgOut.
2680          * Includes category rendering if this is a category page.
2681          *
2682          * @param $text String: the HTML to be output for the preview.
2683          */
2684         protected function showPreview( $text ) {
2685                 if ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
2686                         $this->getArticle()->openShowCategory();
2687                 }
2688                 # This hook seems slightly odd here, but makes things more
2689                 # consistent for extensions.
2690                 $out = $this->getArticle()->getContext()->getOutput();
2691                 wfRunHooks( 'OutputPageBeforeHTML', array( &$out, &$text ) );
2692
2693                 $out->addHTML( $text );
2694
2695                 if ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
2696                         $this->getArticle()->closeShowCategory();
2697                 }
2698         }
2699
2700         /**
2701          * Get a diff between the current contents of the edit box and the
2702          * version of the page we're editing from.
2703          *
2704          * If this is a section edit, we'll replace the section as for final
2705          * save and then make a comparison.
2706          */
2707         function showDiff() {
2708                 global $wgContLang;
2709
2710                 $oldtitlemsg = 'currentrev';
2711                 # if message does not exist, show diff against the preloaded default
2712                 $title = $this->getTitle();
2713                 if( $title->getNamespace() == NS_MEDIAWIKI && !$title->exists() ) {
2714                         $oldtext = $title->getDefaultMessageText();
2715                         if( $oldtext !== false ) {
2716                                 $oldtitlemsg = 'defaultmessagetext';
2717                                 $oldContent = $this->toEditContent( $oldtext );
2718                         } else {
2719                                 $oldContent = null;
2720                         }
2721                 } else {
2722                         $oldContent = $this->getCurrentContent();
2723                 }
2724
2725                 $textboxContent = $this->toEditContent( $this->textbox1 );
2726
2727                 $newContent = $this->getArticle()->replaceSectionContent(
2728                         $this->section, $textboxContent,
2729                         $this->summary, $this->edittime
2730                 );
2731
2732                 $context = $this->getArticle()->getContext();
2733                 $user = $context->getUser();
2734
2735                 if ( $newContent ) {
2736                         ContentHandler::runLegacyHooks( 'EditPageGetDiffText', array( $this, &$newContent ) );
2737                         wfRunHooks( 'EditPageGetDiffContent', array( $this, &$newContent ) );
2738
2739                         $popts = ParserOptions::newFromUserAndLang( $user, $wgContLang );
2740                         $newContent = $newContent->preSaveTransform( $this->getTitle(), $user, $popts );
2741                 }
2742
2743                 if ( ( $oldContent && !$oldContent->isEmpty() ) || ( $newContent && !$newContent->isEmpty() ) ) {
2744                         $oldtitle = $context->msg( $oldtitlemsg )->parse();
2745                         $newtitle = $context->msg( 'yourtext' )->parse();
2746
2747                         if ( !$oldContent ) {
2748                                 $oldContent = $newContent->getContentHandler()->makeEmptyContent();
2749                         }
2750
2751                         if ( !$newContent ) {
2752                                 $newContent = $oldContent->getContentHandler()->makeEmptyContent();
2753                         }
2754
2755                         $de = $oldContent->getContentHandler()->createDifferenceEngine( $context );
2756                         $de->setContent( $oldContent, $newContent );
2757
2758                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2759                         $de->showDiffStyle();
2760                 } else {
2761                         $difftext = '';
2762                 }
2763
2764                 $context->getOutput()->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2765         }
2766
2767         /**
2768          * Show the header copyright warning.
2769          */
2770         protected function showHeaderCopyrightWarning() {
2771                 $msg = 'editpage-head-copy-warn';
2772                 $context = $this->getArticle()->getContext();
2773
2774                 if ( !$context->msg( $msg )->isDisabled() ) {
2775                         $context->getOutput()->wrapWikiMsg(
2776                                 "<div class='editpage-head-copywarn'>\n$1\n</div>",
2777                                 'editpage-head-copy-warn'
2778                         );
2779                 }
2780         }
2781
2782         /**
2783          * Give a chance for site and per-namespace customizations of
2784          * terms of service summary link that might exist separately
2785          * from the copyright notice.
2786          *
2787          * This will display between the save button and the edit tools,
2788          * so should remain short!
2789          */
2790         protected function showTosSummary() {
2791                 $msg = 'editpage-tos-summary';
2792                 wfRunHooks( 'EditPageTosSummary', array( $this->getTitle(), &$msg ) );
2793
2794                 $context = $this->getArticle()->getContext();
2795                 if ( !$context->msg( $msg )->isDisabled() ) {
2796                         $out = $context->getOutput();
2797
2798                         $out->addHTML( '<div class="mw-tos-summary">' );
2799                         $out->addWikiMsg( $msg );
2800                         $out->addHTML( '</div>' );
2801                 }
2802         }
2803
2804         protected function showEditTools() {
2805                 $context = $this->getArticle()->getContext();
2806                 $context->getOutput()->addHTML( '<div class="mw-editTools">' .
2807                         $context->msg( 'edittools' )->inContentLanguage()->parse() .
2808                         '</div>' );
2809         }
2810
2811         /**
2812          * Get the copyright warning
2813          *
2814          * Renamed to getCopyrightWarning(), old name kept around for backwards compatibility
2815          */
2816         protected function getCopywarn() {
2817                 return self::getCopyrightWarning( $this->getTitle() );
2818         }
2819
2820         public static function getCopyrightWarning( $title ) {
2821                 global $wgRightsText;
2822
2823                 if ( $wgRightsText ) {
2824                         $copywarnMsg = array( 'copyrightwarning',
2825                                 '[[' . wfMessage( 'copyrightpage' )->inContentLanguage()->text() . ']]',
2826                                 $wgRightsText );
2827                 } else {
2828                         $copywarnMsg = array( 'copyrightwarning2',
2829                                 '[[' . wfMessage( 'copyrightpage' )->inContentLanguage()->text() . ']]' );
2830                 }
2831                 // Allow for site and per-namespace customization of contribution/copyright notice.
2832                 wfRunHooks( 'EditPageCopyrightWarning', array( $title, &$copywarnMsg ) );
2833
2834                 return "<div id=\"editpage-copywarn\">\n" .
2835                         call_user_func_array( 'wfMessage', $copywarnMsg )->plain() . "\n</div>";
2836         }
2837
2838         protected function showStandardInputs( &$tabindex = 2 ) {
2839                 $context = $this->getArticle()->getContext();
2840                 $out = $context->getOutput();
2841
2842                 $out->addHTML( "<div class='editOptions'>\n" );
2843
2844                 if ( $this->section != 'new' ) {
2845                         $this->showSummaryInput( false, $this->summary );
2846                         $out->addHTML( $this->getSummaryPreview( false, $this->summary ) );
2847                 }
2848
2849                 $checkboxes = $this->getCheckboxes( $tabindex,
2850                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
2851                 $out->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
2852
2853                 // Show copyright warning.
2854                 $out->addWikiText( $this->getCopywarn() );
2855                 $out->addHTML( $this->editFormTextAfterWarn );
2856
2857                 $out->addHTML( "<div class='editButtons'>\n" );
2858                 $out->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
2859
2860                 $cancel = $this->getCancelLink();
2861                 if ( $cancel !== '' ) {
2862                         $cancel .= $context->msg( 'pipe-separator' )->text();
2863                 }
2864                 $edithelpurl = Skin::makeInternalOrExternalUrl(
2865                         $context->msg( 'edithelppage' )->inContentLanguage()->text()
2866                 );
2867                 $edithelp = '<a target="helpwindow" href="' . $edithelpurl . '">' .
2868                         $context->msg( 'edithelp' )->escaped() . '</a> ' .
2869                         $context->msg( 'newwindow' )->parse();
2870                 $out->addHTML( "        <span class='cancelLink'>{$cancel}</span>\n" );
2871                 $out->addHTML( "        <span class='editHelp'>{$edithelp}</span>\n" );
2872                 $out->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
2873         }
2874
2875         /**
2876          * Show an edit conflict. textbox1 is already shown in showEditForm().
2877          * If you want to use another entry point to this function, be careful.
2878          */
2879         protected function showConflict() {
2880                 $context = $this->getArticle()->getContext();
2881                 $out = $context->getOutput();
2882
2883                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$out ) ) ) {
2884                         $out->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2885
2886                         $content1 = $this->toEditContent( $this->textbox1 );
2887                         $content2 = $this->toEditContent( $this->textbox2 );
2888
2889                         $handler = ContentHandler::getForModelID( $this->contentModel );
2890                         $de = $handler->createDifferenceEngine( $context );
2891                         $de->setContent( $content2, $content1 );
2892                         $de->showDiff(
2893                                 $context->msg( 'yourtext' )->parse(),
2894                                 $context->msg( 'storedversion' )->text()
2895                         );
2896
2897                         $out->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2898                         $this->showTextbox2();
2899                 }
2900         }
2901
2902         /**
2903          * @return string
2904          */
2905         public function getCancelLink() {
2906                 $cancelParams = array();
2907                 if ( !$this->isConflict && $this->oldid > 0 ) {
2908                         $cancelParams['oldid'] = $this->oldid;
2909                 }
2910
2911                 return Linker::linkKnown(
2912                         $this->getContextTitle(),
2913                         $this->getArticle()->getContext()->msg( 'cancel' )->parse(),
2914                         array( 'id' => 'mw-editform-cancel' ),
2915                         $cancelParams
2916                 );
2917         }
2918
2919         /**
2920          * Returns the URL to use in the form's action attribute.
2921          * This is used by EditPage subclasses when simply customizing the action
2922          * variable in the constructor is not enough. This can be used when the
2923          * EditPage lives inside of a Special page rather than a custom page action.
2924          *
2925          * @param $title Title object for which is being edited (where we go to for &action= links)
2926          * @return string
2927          */
2928         protected function getActionURL( Title $title ) {
2929                 return $title->getLocalURL( array( 'action' => $this->action ) );
2930         }
2931
2932         /**
2933          * Check if a page was deleted while the user was editing it, before submit.
2934          * Note that we rely on the logging table, which hasn't been always there,
2935          * but that doesn't matter, because this only applies to brand new
2936          * deletes.
2937          */
2938         protected function wasDeletedSinceLastEdit() {
2939                 if ( $this->deletedSinceEdit !== null ) {
2940                         return $this->deletedSinceEdit;
2941                 }
2942
2943                 $this->deletedSinceEdit = false;
2944
2945                 if ( $this->getTitle()->isDeletedQuick() ) {
2946                         $this->lastDelete = $this->getLastDelete();
2947                         if ( $this->lastDelete ) {
2948                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
2949                                 if ( $deleteTime > $this->starttime ) {
2950                                         $this->deletedSinceEdit = true;
2951                                 }
2952                         }
2953                 }
2954
2955                 return $this->deletedSinceEdit;
2956         }
2957
2958         protected function getLastDelete() {
2959                 $dbr = wfGetDB( DB_SLAVE );
2960                 $title = $this->getTitle();
2961
2962                 $data = $dbr->selectRow(
2963                         array( 'logging', 'user' ),
2964                         array( 'log_type',
2965                                    'log_action',
2966                                    'log_timestamp',
2967                                    'log_user',
2968                                    'log_namespace',
2969                                    'log_title',
2970                                    'log_comment',
2971                                    'log_params',
2972                                    'log_deleted',
2973                                    'user_name' ),
2974                         array( 'log_namespace' => $title->getNamespace(),
2975                                    'log_title' => $title->getDBkey(),
2976                                    'log_type' => 'delete',
2977                                    'log_action' => 'delete',
2978                                    'user_id=log_user' ),
2979                         __METHOD__,
2980                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
2981                 );
2982                 // Quick paranoid permission checks...
2983                 if ( is_object( $data ) ) {
2984                         $context = $this->getArticle()->getContext();
2985                         if ( $data->log_deleted & LogPage::DELETED_USER ) {
2986                                 $data->user_name = $context->msg( 'rev-deleted-user' )->escaped();
2987                         }
2988
2989                         if ( $data->log_deleted & LogPage::DELETED_COMMENT ) {
2990                                 $data->log_comment = $context->msg( 'rev-deleted-comment' )->escaped();
2991                         }
2992                 }
2993
2994                 return $data;
2995         }
2996
2997         /**
2998          * Get the rendered text for previewing.
2999          * @throws MWException
3000          * @return string
3001          */
3002         function getPreviewText() {
3003                 global $wgRawHtml;
3004
3005                 wfProfileIn( __METHOD__ );
3006
3007                 $context = $this->getArticle()->getContext();
3008                 $out = $context->getOutput();
3009                 $title = $this->getTitle();
3010
3011                 if ( $wgRawHtml && !$this->mTokenOk ) {
3012                         // Could be an offsite preview attempt. This is very unsafe if
3013                         // HTML is enabled, as it could be an attack.
3014                         $parsedNote = '';
3015                         if ( $this->textbox1 !== '' ) {
3016                                 // Do not put big scary notice, if previewing the empty
3017                                 // string, which happens when you initially edit
3018                                 // a category page, due to automatic preview-on-open.
3019                                 $parsedNote = $out->parse( "<div class='previewnote'>" .
3020                                         $context->msg( 'session_fail_preview_html' )->text() .
3021                                         "</div>", true, /* interface */true );
3022                         }
3023                         wfProfileOut( __METHOD__ );
3024                         return $parsedNote;
3025                 }
3026
3027                 $note = '';
3028
3029                 try {
3030                         $content = $this->toEditContent( $this->textbox1 );
3031
3032                         if ( $this->mTriedSave && !$this->mTokenOk ) {
3033                                 if ( $this->mTokenOkExceptSuffix ) {
3034                                         $note = $context->msg( 'token_suffix_mismatch' )->plain() ;
3035
3036                                 } else {
3037                                         $note = $context->msg( 'session_fail_preview' )->plain() ;
3038                                 }
3039                         } elseif ( $this->incompleteForm ) {
3040                                 $note = $context->msg( 'edit_form_incomplete' )->plain() ;
3041                         } else {
3042                                 $note = $context->msg( 'previewnote' )->plain() .
3043                                         ' [[#' . self::EDITFORM_ID . '|' . $context->getLanguage()->getArrow() . ' ' .
3044                                         $context->msg( 'continue-editing' )->text() . ']]';
3045                         }
3046
3047                         $parserOptions = $this->getAticle()->makeParserOptions( $context );
3048                         $parserOptions->setEditSection( false );
3049                         $parserOptions->setIsPreview( true );
3050                         $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
3051
3052                         # don't parse non-wikitext pages, show message about preview
3053                         if ( $title->isCssJsSubpage() || $title->isCssOrJsPage() ) {
3054                                 if( $title->isCssJsSubpage() ) {
3055                                         $level = 'user';
3056                                 } elseif( $title->isCssOrJsPage() ) {
3057                                         $level = 'site';
3058                                 } else {
3059                                         $level = false;
3060                                 }
3061
3062                                 if ( $content->getModel() == CONTENT_MODEL_CSS ) {
3063                                         $format = 'css';
3064                                 } elseif ( $content->getModel() == CONTENT_MODEL_JAVASCRIPT ) {
3065                                         $format = 'js';
3066                                 } else {
3067                                         $format = false;
3068                                 }
3069
3070                                 # Used messages to make sure grep find them:
3071                                 # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
3072                                 if( $level && $format ) {
3073                                         $note = "<div id='mw-{$level}{$format}preview'>" .
3074                                                 $context->msg( "{$level}{$format}preview" )->text()  .
3075                                                 "</div>";
3076                                 }
3077                         }
3078
3079                         $rt = $content->getRedirectChain();
3080                         if ( $rt ) {
3081                                 $previewHTML = $this->getArticle()->viewRedirect( $rt, false );
3082                         } else {
3083                                 # If we're adding a comment, we need to show the
3084                                 # summary as the headline
3085                                 if ( $this->section === "new" && $this->summary !== "" ) {
3086                                         $content = $content->addSectionHeader( $this->summary );
3087                                 }
3088
3089                                 $hook_args = array( $this, &$content );
3090                                 ContentHandler::runLegacyHooks( 'EditPageGetPreviewText', $hook_args );
3091                                 wfRunHooks( 'EditPageGetPreviewContent', $hook_args );
3092
3093                                 $parserOptions->enableLimitReport();
3094
3095                                 # For CSS/JS pages, we should have called the ShowRawCssJs hook here.
3096                                 # But it's now deprecated, so never mind
3097
3098                                 $content = $content->preSaveTransform( $title, $context->getUser(), $parserOptions );
3099                                 $parserOutput = $content->getParserOutput( $title, null, $parserOptions );
3100
3101                                 $previewHTML = $parserOutput->getText();
3102                                 $this->mParserOutput = $parserOutput;
3103                                 $out->addParserOutputNoText( $parserOutput );
3104
3105                                 if ( count( $parserOutput->getWarnings() ) ) {
3106                                         $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
3107                                 }
3108                         }
3109                 } catch ( MWContentSerializationException $ex ) {
3110                         $m = $context->msg('content-failed-to-parse', $this->contentModel, $this->contentFormat, $ex->getMessage() );
3111                         $note .= "\n\n" . $m->parse();
3112                         $previewHTML = '';
3113                 }
3114
3115                 if ( $this->isConflict ) {
3116                         $conflict = '<h2 id="mw-previewconflict">' . $context->msg( 'previewconflict' )->escaped() . "</h2>\n";
3117                 } else {
3118                         $conflict = '<hr />';
3119                 }
3120
3121                 $previewhead = "<div class='previewnote'>\n" .
3122                         '<h2 id="mw-previewheader">' . $context->msg( 'preview' )->escaped() . "</h2>" .
3123                         $out->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
3124
3125                 $pageLang = $title->getPageLanguage();
3126                 $attribs = array( 'lang' => $pageLang->getCode(), 'dir' => $pageLang->getDir(),
3127                         'class' => 'mw-content-' . $pageLang->getDir() );
3128                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
3129
3130                 wfProfileOut( __METHOD__ );
3131                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
3132         }
3133
3134         /**
3135          * @return Array
3136          */
3137         function getTemplates() {
3138                 if ( $this->preview || $this->section != '' ) {
3139                         $templates = array();
3140                         if ( !isset( $this->mParserOutput ) ) {
3141                                 return $templates;
3142                         }
3143                         foreach ( $this->mParserOutput->getTemplates() as $ns => $template ) {
3144                                 foreach ( array_keys( $template ) as $dbk ) {
3145                                         $templates[] = Title::makeTitle( $ns, $dbk );
3146                                 }
3147                         }
3148                         return $templates;
3149                 } else {
3150                         return $this->getTitle()->getTemplateLinksFrom();
3151                 }
3152         }
3153
3154         /**
3155          * Shows a bulletin board style toolbar for common editing functions.
3156          * It can be disabled in the user preferences.
3157          * The necessary JavaScript code can be found in skins/common/edit.js.
3158          *
3159          * @return string
3160          */
3161         static function getEditToolbar() {
3162                 global $wgStylePath, $wgContLang, $wgLang, $wgOut;
3163                 global $wgUseTeX, $wgEnableUploads, $wgForeignFileRepos;
3164
3165                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
3166
3167                 /**
3168                  * $toolarray is an array of arrays each of which includes the
3169                  * filename of the button image (without path), the opening
3170                  * tag, the closing tag, optionally a sample text that is
3171                  * inserted between the two when no selection is highlighted
3172                  * and.  The tip text is shown when the user moves the mouse
3173                  * over the button.
3174                  *
3175                  * Also here: accesskeys (key), which are not used yet until
3176                  * someone can figure out a way to make them work in
3177                  * IE. However, we should make sure these keys are not defined
3178                  * on the edit page.
3179                  */
3180                 $toolarray = array(
3181                         array(
3182                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
3183                                 'id'     => 'mw-editbutton-bold',
3184                                 'open'   => '\'\'\'',
3185                                 'close'  => '\'\'\'',
3186                                 'sample' => wfMessage( 'bold_sample' )->text(),
3187                                 'tip'    => wfMessage( 'bold_tip' )->text(),
3188                                 'key'    => 'B'
3189                         ),
3190                         array(
3191                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
3192                                 'id'     => 'mw-editbutton-italic',
3193                                 'open'   => '\'\'',
3194                                 'close'  => '\'\'',
3195                                 'sample' => wfMessage( 'italic_sample' )->text(),
3196                                 'tip'    => wfMessage( 'italic_tip' )->text(),
3197                                 'key'    => 'I'
3198                         ),
3199                         array(
3200                                 'image'  => $wgLang->getImageFile( 'button-link' ),
3201                                 'id'     => 'mw-editbutton-link',
3202                                 'open'   => '[[',
3203                                 'close'  => ']]',
3204                                 'sample' => wfMessage( 'link_sample' )->text(),
3205                                 'tip'    => wfMessage( 'link_tip' )->text(),
3206                                 'key'    => 'L'
3207                         ),
3208                         array(
3209                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
3210                                 'id'     => 'mw-editbutton-extlink',
3211                                 'open'   => '[',
3212                                 'close'  => ']',
3213                                 'sample' => wfMessage( 'extlink_sample' )->text(),
3214                                 'tip'    => wfMessage( 'extlink_tip' )->text(),
3215                                 'key'    => 'X'
3216                         ),
3217                         array(
3218                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
3219                                 'id'     => 'mw-editbutton-headline',
3220                                 'open'   => "\n== ",
3221                                 'close'  => " ==\n",
3222                                 'sample' => wfMessage( 'headline_sample' )->text(),
3223                                 'tip'    => wfMessage( 'headline_tip' )->text(),
3224                                 'key'    => 'H'
3225                         ),
3226                         $imagesAvailable ? array(
3227                                 'image'  => $wgLang->getImageFile( 'button-image' ),
3228                                 'id'     => 'mw-editbutton-image',
3229                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
3230                                 'close'  => ']]',
3231                                 'sample' => wfMessage( 'image_sample' )->text(),
3232                                 'tip'    => wfMessage( 'image_tip' )->text(),
3233                                 'key'    => 'D',
3234                         ) : false,
3235                         $imagesAvailable ? array(
3236                                 'image'  => $wgLang->getImageFile( 'button-media' ),
3237                                 'id'     => 'mw-editbutton-media',
3238                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
3239                                 'close'  => ']]',
3240                                 'sample' => wfMessage( 'media_sample' )->text(),
3241                                 'tip'    => wfMessage( 'media_tip' )->text(),
3242                                 'key'    => 'M'
3243                         ) : false,
3244                         $wgUseTeX ? array(
3245                                 'image'  => $wgLang->getImageFile( 'button-math' ),
3246                                 'id'     => 'mw-editbutton-math',
3247                                 'open'   => "<math>",
3248                                 'close'  => "</math>",
3249                                 'sample' => wfMessage( 'math_sample' )->text(),
3250                                 'tip'    => wfMessage( 'math_tip' )->text(),
3251                                 'key'    => 'C'
3252                         ) : false,
3253                         array(
3254                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
3255                                 'id'     => 'mw-editbutton-nowiki',
3256                                 'open'   => "<nowiki>",
3257                                 'close'  => "</nowiki>",
3258                                 'sample' => wfMessage( 'nowiki_sample' )->text(),
3259                                 'tip'    => wfMessage( 'nowiki_tip' )->text(),
3260                                 'key'    => 'N'
3261                         ),
3262                         array(
3263                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
3264                                 'id'     => 'mw-editbutton-signature',
3265                                 'open'   => '--~~~~',
3266                                 'close'  => '',
3267                                 'sample' => '',
3268                                 'tip'    => wfMessage( 'sig_tip' )->text(),
3269                                 'key'    => 'Y'
3270                         ),
3271                         array(
3272                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
3273                                 'id'     => 'mw-editbutton-hr',
3274                                 'open'   => "\n----\n",
3275                                 'close'  => '',
3276                                 'sample' => '',
3277                                 'tip'    => wfMessage( 'hr_tip' )->text(),
3278                                 'key'    => 'R'
3279                         )
3280                 );
3281
3282                 $script = 'mw.loader.using("mediawiki.action.edit", function() {';
3283                 foreach ( $toolarray as $tool ) {
3284                         if ( !$tool ) {
3285                                 continue;
3286                         }
3287
3288                         $params = array(
3289                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
3290                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
3291                                 // Older browsers show a "speedtip" type message only for ALT.
3292                                 // Ideally these should be different, realistically they
3293                                 // probably don't need to be.
3294                                 $tip = $tool['tip'],
3295                                 $open = $tool['open'],
3296                                 $close = $tool['close'],
3297                                 $sample = $tool['sample'],
3298                                 $cssId = $tool['id'],
3299                         );
3300
3301                         $script .= Xml::encodeJsCall( 'mw.toolbar.addButton', $params );
3302                 }
3303
3304                 // This used to be called on DOMReady from mediawiki.action.edit, which
3305                 // ended up causing race conditions with the setup code above.
3306                 $script .= "\n" .
3307                         "// Create button bar\n" .
3308                         "$(function() { mw.toolbar.init(); } );\n";
3309
3310                 $script .= '});';
3311                 $wgOut->addScript( Html::inlineScript( ResourceLoader::makeLoaderConditionalScript( $script ) ) );
3312
3313                 $toolbar = '<div id="toolbar"></div>';
3314
3315                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
3316
3317                 return $toolbar;
3318         }
3319
3320         /**
3321          * Returns an array of html code of the following checkboxes:
3322          * minor and watch
3323          *
3324          * @param $tabindex int Current tabindex
3325          * @param $checked Array of checkbox => bool, where bool indicates the checked
3326          *                 status of the checkbox
3327          *
3328          * @return array
3329          */
3330         public function getCheckboxes( &$tabindex, $checked ) {
3331                 $checkboxes = array();
3332                 $context = $this->getArticle()->getContext();
3333                 $user = $context->getUser();
3334
3335                 // don't show the minor edit checkbox if it's a new page or section
3336                 if ( !$this->isNew ) {
3337                         $checkboxes['minor'] = '';
3338                         $minorLabel = $context->msg( 'minoredit' )->parse();
3339                         if ( $user->isAllowed( 'minoredit' ) ) {
3340                                 $attribs = array(
3341                                         'tabindex'  => ++$tabindex,
3342                                         'accesskey' => $context->msg( 'accesskey-minoredit' )->text(),
3343                                         'id'        => 'wpMinoredit',
3344                                 );
3345                                 $checkboxes['minor'] =
3346                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
3347                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
3348                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
3349                                         ">{$minorLabel}</label>";
3350                         }
3351                 }
3352
3353                 $watchLabel = $context->msg( 'watchthis' )->parse();
3354                 $checkboxes['watch'] = '';
3355
3356                 if ( $user->isLoggedIn() ) {
3357                         $attribs = array(
3358                                 'tabindex'  => ++$tabindex,
3359                                 'accesskey' => $context->msg( 'accesskey-watch' )->text(),
3360                                 'id'        => 'wpWatchthis',
3361                         );
3362                         $checkboxes['watch'] =
3363                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
3364                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
3365                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
3366                                 ">{$watchLabel}</label>";
3367                 }
3368
3369                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
3370
3371                 return $checkboxes;
3372         }
3373
3374         /**
3375          * Returns an array of html code of the following buttons:
3376          * save, diff, preview and live
3377          *
3378          * @param $tabindex int Current tabindex
3379          *
3380          * @return array
3381          */
3382         public function getEditButtons( &$tabindex ) {
3383                 $buttons = array();
3384                 $context = $this->getArticle()->getContext();
3385
3386                 $temp = array(
3387                         'id'        => 'wpSave',
3388                         'name'      => 'wpSave',
3389                         'type'      => 'submit',
3390                         'tabindex'  => ++$tabindex,
3391                         'value'     => $context->msg( 'savearticle' )->text(),
3392                         'accesskey' => $context->msg( 'accesskey-save' )->text(),
3393                         'title'     => $context->msg( 'tooltip-save' )->text() . ' [' . $context->msg( 'accesskey-save' )->text() . ']',
3394                 );
3395                 $buttons['save'] = Xml::element( 'input', $temp, '' );
3396
3397                 ++$tabindex; // use the same for preview and live preview
3398                 $temp = array(
3399                         'id'        => 'wpPreview',
3400                         'name'      => 'wpPreview',
3401                         'type'      => 'submit',
3402                         'tabindex'  => $tabindex,
3403                         'value'     => $context->msg( 'showpreview' )->text(),
3404                         'accesskey' => $context->msg( 'accesskey-preview' )->text(),
3405                         'title'     => $context->msg( 'tooltip-preview' )->text() . ' [' . $context->msg( 'accesskey-preview' )->text() . ']',
3406                 );
3407                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
3408                 $buttons['live'] = '';
3409
3410                 $temp = array(
3411                         'id'        => 'wpDiff',
3412                         'name'      => 'wpDiff',
3413                         'type'      => 'submit',
3414                         'tabindex'  => ++$tabindex,
3415                         'value'     => $context->msg( 'showdiff' )->text(),
3416                         'accesskey' => $context->msg( 'accesskey-diff' )->text(),
3417                         'title'     => $context->msg( 'tooltip-diff' )->text() . ' [' . $context->msg( 'accesskey-diff' )->text() . ']',
3418                 );
3419                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
3420
3421                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
3422                 return $buttons;
3423         }
3424
3425         /**
3426          * Output preview text only. This can be sucked into the edit page
3427          * via JavaScript, and saves the server time rendering the skin as
3428          * well as theoretically being more robust on the client (doesn't
3429          * disturb the edit box's undo history, won't eat your text on
3430          * failure, etc).
3431          *
3432          * @todo This doesn't include category or interlanguage links.
3433          *       Would need to enhance it a bit, "<s>maybe wrap them in XML
3434          *       or something...</s>" that might also require more skin
3435          *       initialization, so check whether that's a problem.
3436          */
3437         function livePreview() {
3438                 $this->getArticle()->getContext()->getOutput()->disable();
3439                 header( 'Content-type: text/xml; charset=utf-8' );
3440                 header( 'Cache-control: no-cache' );
3441
3442                 $previewText = $this->getPreviewText();
3443                 #$categories = $skin->getCategoryLinks();
3444
3445                 $s =
3446                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
3447                 Xml::tags( 'livepreview', null,
3448                         Xml::element( 'preview', null, $previewText )
3449                         #.      Xml::element( 'category', null, $categories )
3450                 );
3451                 echo $s;
3452         }
3453
3454         /**
3455          * Call the stock "user is blocked" page
3456          *
3457          * @deprecated in 1.19; throw an exception directly instead
3458          */
3459         function blockedPage() {
3460                 wfDeprecated( __METHOD__, '1.19' );
3461                 throw new UserBlockedError( $this->getArticle()->getContext()->getUser()->getBlock() );
3462         }
3463
3464         /**
3465          * Produce the stock "please login to edit pages" page
3466          *
3467          * @deprecated in 1.19; throw an exception directly instead
3468          */
3469         function userNotLoggedInPage() {
3470                 wfDeprecated( __METHOD__, '1.19' );
3471                 throw new PermissionsError( 'edit' );
3472         }
3473
3474         /**
3475          * Show an error page saying to the user that he has insufficient permissions
3476          * to create a new page
3477          *
3478          * @deprecated in 1.19; throw an exception directly instead
3479          */
3480         function noCreatePermission() {
3481                 wfDeprecated( __METHOD__, '1.19' );
3482                 $permission = $this->getTitle()->isTalkPage() ? 'createtalk' : 'createpage';
3483                 throw new PermissionsError( $permission );
3484         }
3485
3486         /**
3487          * Creates a basic error page which informs the user that
3488          * they have attempted to edit a nonexistent section.
3489          */
3490         function noSuchSectionPage() {
3491                 $context = $this->getArticle()->getContext();
3492                 $out = $context->getOutput();
3493
3494                 $out->prepareErrorPage( $context->msg( 'nosuchsectiontitle' ) );
3495
3496                 $res = $context->msg( 'nosuchsectiontext', $this->section )->parseAsBlock();
3497                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
3498
3499                 $out->addHTML( $res );
3500                 $out->returnToMain( false, $this->getTitle() );
3501         }
3502
3503         /**
3504          * Produce the stock "your edit contains spam" page
3505          *
3506          * @param $match string|bool Text which triggered one or more filters
3507          * @deprecated since 1.17 Use method spamPageWithContent() instead
3508          */
3509         static function spamPage( $match = false ) {
3510                 wfDeprecated( __METHOD__, '1.17' );
3511
3512                 global $wgOut, $wgTitle;
3513
3514                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3515
3516                 $wgOut->addHTML( '<div id="spamprotected">' );
3517                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3518                 if ( $match ) {
3519                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3520                 }
3521                 $wgOut->addHTML( '</div>' );
3522
3523                 $wgOut->returnToMain( false, $wgTitle );
3524         }
3525
3526         /**
3527          * Show "your edit contains spam" page with your diff and text
3528          *
3529          * @param $match string|Array|bool Text (or array of texts) which triggered one or more filters
3530          */
3531         public function spamPageWithContent( $match = false ) {
3532                 $this->textbox2 = $this->textbox1;
3533
3534                 $context = $this->getArticle()->getContext();
3535                 if( is_array( $match ) ){
3536                         $match = $context->getLanguage()->listToText( $match );
3537                 }
3538
3539                 $out = $context->getOutput();
3540                 $out->prepareErrorPage( $context->msg( 'spamprotectiontitle' ) );
3541
3542                 $out->addHTML( '<div id="spamprotected">' );
3543                 $out->addWikiMsg( 'spamprotectiontext' );
3544                 if ( $match ) {
3545                         $out->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3546                 }
3547                 $out->addHTML( '</div>' );
3548
3549                 $out->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3550                 $this->showDiff();
3551
3552                 $out->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3553                 $this->showTextbox2();
3554
3555                 $out->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
3556         }
3557
3558         /**
3559          * Format an anchor fragment as it would appear for a given section name
3560          * @param $text String
3561          * @return String
3562          * @private
3563          */
3564         function sectionAnchor( $text ) {
3565                 global $wgParser;
3566                 return $wgParser->guessSectionNameFromWikiText( $text );
3567         }
3568
3569         /**
3570          * Check if the browser is on a blacklist of user-agents known to
3571          * mangle UTF-8 data on form submission. Returns true if Unicode
3572          * should make it through, false if it's known to be a problem.
3573          * @return bool
3574          * @private
3575          */
3576         function checkUnicodeCompliantBrowser() {
3577                 global $wgBrowserBlackList, $wgRequest;
3578
3579                 $currentbrowser = $wgRequest->getHeader( 'User-Agent' );
3580                 if ( $currentbrowser === false ) {
3581                         // No User-Agent header sent? Trust it by default...
3582                         return true;
3583                 }
3584
3585                 foreach ( $wgBrowserBlackList as $browser ) {
3586                         if ( preg_match( $browser, $currentbrowser ) ) {
3587                                 return false;
3588                         }
3589                 }
3590                 return true;
3591         }
3592
3593         /**
3594          * Filter an input field through a Unicode de-armoring process if it
3595          * came from an old browser with known broken Unicode editing issues.
3596          *
3597          * @param $request WebRequest
3598          * @param $field String
3599          * @return String
3600          * @private
3601          */
3602         function safeUnicodeInput( $request, $field ) {
3603                 $text = rtrim( $request->getText( $field ) );
3604                 return $request->getBool( 'safemode' )
3605                         ? $this->unmakesafe( $text )
3606                         : $text;
3607         }
3608
3609         /**
3610          * @param $request WebRequest
3611          * @param $text string
3612          * @return string
3613          */
3614         function safeUnicodeText( $request, $text ) {
3615                 $text = rtrim( $text );
3616                 return $request->getBool( 'safemode' )
3617                         ? $this->unmakesafe( $text )
3618                         : $text;
3619         }
3620
3621         /**
3622          * Filter an output field through a Unicode armoring process if it is
3623          * going to an old browser with known broken Unicode editing issues.
3624          *
3625          * @param $text String
3626          * @return String
3627          * @private
3628          */
3629         function safeUnicodeOutput( $text ) {
3630                 global $wgContLang;
3631                 $codedText = $wgContLang->recodeForEdit( $text );
3632                 return $this->checkUnicodeCompliantBrowser()
3633                         ? $codedText
3634                         : $this->makesafe( $codedText );
3635         }
3636
3637         /**
3638          * A number of web browsers are known to corrupt non-ASCII characters
3639          * in a UTF-8 text editing environment. To protect against this,
3640          * detected browsers will be served an armored version of the text,
3641          * with non-ASCII chars converted to numeric HTML character references.
3642          *
3643          * Preexisting such character references will have a 0 added to them
3644          * to ensure that round-trips do not alter the original data.
3645          *
3646          * @param $invalue String
3647          * @return String
3648          * @private
3649          */
3650         function makesafe( $invalue ) {
3651                 // Armor existing references for reversability.
3652                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
3653
3654                 $bytesleft = 0;
3655                 $result = "";
3656                 $working = 0;
3657                 for ( $i = 0; $i < strlen( $invalue ); $i++ ) {
3658                         $bytevalue = ord( $invalue[$i] );
3659                         if ( $bytevalue <= 0x7F ) { // 0xxx xxxx
3660                                 $result .= chr( $bytevalue );
3661                                 $bytesleft = 0;
3662                         } elseif ( $bytevalue <= 0xBF ) { // 10xx xxxx
3663                                 $working = $working << 6;
3664                                 $working += ( $bytevalue & 0x3F );
3665                                 $bytesleft--;
3666                                 if ( $bytesleft <= 0 ) {
3667                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
3668                                 }
3669                         } elseif ( $bytevalue <= 0xDF ) { // 110x xxxx
3670                                 $working = $bytevalue & 0x1F;
3671                                 $bytesleft = 1;
3672                         } elseif ( $bytevalue <= 0xEF ) { // 1110 xxxx
3673                                 $working = $bytevalue & 0x0F;
3674                                 $bytesleft = 2;
3675                         } else { // 1111 0xxx
3676                                 $working = $bytevalue & 0x07;
3677                                 $bytesleft = 3;
3678                         }
3679                 }
3680                 return $result;
3681         }
3682
3683         /**
3684          * Reverse the previously applied transliteration of non-ASCII characters
3685          * back to UTF-8. Used to protect data from corruption by broken web browsers
3686          * as listed in $wgBrowserBlackList.
3687          *
3688          * @param $invalue String
3689          * @return String
3690          * @private
3691          */
3692         function unmakesafe( $invalue ) {
3693                 $result = "";
3694                 for ( $i = 0; $i < strlen( $invalue ); $i++ ) {
3695                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i + 3] != '0' ) ) {
3696                                 $i += 3;
3697                                 $hexstring = "";
3698                                 do {
3699                                         $hexstring .= $invalue[$i];
3700                                         $i++;
3701                                 } while ( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
3702
3703                                 // Do some sanity checks. These aren't needed for reversability,
3704                                 // but should help keep the breakage down if the editor
3705                                 // breaks one of the entities whilst editing.
3706                                 if ( ( substr( $invalue, $i, 1 ) == ";" ) and ( strlen( $hexstring ) <= 6 ) ) {
3707                                         $codepoint = hexdec( $hexstring );
3708                                         $result .= codepointToUtf8( $codepoint );
3709                                 } else {
3710                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
3711                                 }
3712                         } else {
3713                                 $result .= substr( $invalue, $i, 1 );
3714                         }
3715                 }
3716                 // reverse the transform that we made for reversability reasons.
3717                 return strtr( $result, array( "&#x0" => "&#x" ) );
3718         }
3719 }