includes/EditPage.php

   1 <?php
   2 /**
   3  * User interface for page editing.
   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 now 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 editing 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: this anonymous user is not allowed to edit this page
  71          */
  72         const AS_READ_ONLY_PAGE_ANON = 218;
  73
  74         /**
  75          * Status: this logged in user is not allowed to edit this page
  76          */
  77         const AS_READ_ONLY_PAGE_LOGGED = 219;
  78
  79         /**
  80          * Status: wiki is in readonly mode (wfReadOnly() == true)
  81          */
  82         const AS_READ_ONLY_PAGE = 220;
  83
  84         /**
  85          * Status: rate limiter for action 'edit' was tripped
  86          */
  87         const AS_RATE_LIMITED = 221;
  88
  89         /**
  90          * Status: article was deleted while editing and param wpRecreate == false or form
  91          * was not posted
  92          */
  93         const AS_ARTICLE_WAS_DELETED = 222;
  94
  95         /**
  96          * Status: user tried to create this page, but is not allowed to do that
  97          * ( Title->userCan('create') == false )
  98          */
  99         const AS_NO_CREATE_PERMISSION = 223;
 100
 101         /**
 102          * Status: user tried to create a blank page and wpIgnoreBlankArticle == false
 103          */
 104         const AS_BLANK_ARTICLE = 224;
 105
 106         /**
 107          * Status: (non-resolvable) edit conflict
 108          */
 109         const AS_CONFLICT_DETECTED = 225;
 110
 111         /**
 112          * Status: no edit summary given and the user has forceeditsummary set and the user is not
 113          * editing in his own userspace or talkspace and wpIgnoreBlankSummary == false
 114          */
 115         const AS_SUMMARY_NEEDED = 226;
 116
 117         /**
 118          * Status: user tried to create a new section without content
 119          */
 120         const AS_TEXTBOX_EMPTY = 228;
 121
 122         /**
 123          * Status: article is too big (> $wgMaxArticleSize), after merging in the new section
 124          */
 125         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
 126
 127         /**
 128          * Status: WikiPage::doEdit() was unsuccessful
 129          */
 130         const AS_END = 231;
 131
 132         /**
 133          * Status: summary contained spam according to one of the regexes in $wgSummarySpamRegex
 134          */
 135         const AS_SPAM_ERROR = 232;
 136
 137         /**
 138          * Status: anonymous user is not allowed to upload (User::isAllowed('upload') == false)
 139          */
 140         const AS_IMAGE_REDIRECT_ANON = 233;
 141
 142         /**
 143          * Status: logged in user is not allowed to upload (User::isAllowed('upload') == false)
 144          */
 145         const AS_IMAGE_REDIRECT_LOGGED = 234;
 146
 147         /**
 148          * Status: user tried to modify the content model, but is not allowed to do that
 149          * ( User::isAllowed('editcontentmodel') == false )
 150          */
 151         const AS_NO_CHANGE_CONTENT_MODEL = 235;
 152
 153         /**
 154          * Status: user tried to create self-redirect (redirect to the same article) and
 155          * wpIgnoreSelfRedirect == false
 156          */
 157         const AS_SELF_REDIRECT = 236;
 158
 159         /**
 160          * Status: an error relating to change tagging. Look at the message key for
 161          * more details
 162          */
 163         const AS_CHANGE_TAG_ERROR = 237;
 164
 165         /**
 166          * Status: can't parse content
 167          */
 168         const AS_PARSE_ERROR = 240;
 169
 170         /**
 171          * Status: when changing the content model is disallowed due to
 172          * $wgContentHandlerUseDB being false
 173          */
 174         const AS_CANNOT_USE_CUSTOM_MODEL = 241;
 175
 176         /**
 177          * HTML id and name for the beginning of the edit form.
 178          */
 179         const EDITFORM_ID = 'editform';
 180
 181         /**
 182          * Prefix of key for cookie used to pass post-edit state.
 183          * The revision id edited is added after this
 184          */
 185         const POST_EDIT_COOKIE_KEY_PREFIX = 'PostEditRevision';
 186
 187         /**
 188          * Duration of PostEdit cookie, in seconds.
 189          * The cookie will be removed instantly if the JavaScript runs.
 190          *
 191          * Otherwise, though, we don't want the cookies to accumulate.
 192          * RFC 2109 ( https://www.ietf.org/rfc/rfc2109.txt ) specifies a possible
 193          * limit of only 20 cookies per domain. This still applies at least to some
 194          * versions of IE without full updates:
 195          * https://blogs.msdn.com/b/ieinternals/archive/2009/08/20/wininet-ie-cookie-internals-faq.aspx
 196          *
 197          * A value of 20 minutes should be enough to take into account slow loads and minor
 198          * clock skew while still avoiding cookie accumulation when JavaScript is turned off.
 199          */
 200         const POST_EDIT_COOKIE_DURATION = 1200;
 201
 202         /** @var Article */
 203         public $mArticle;
 204
 205         /** @var Title */
 206         public $mTitle;
 207
 208         /** @var null|Title */
 209         private $mContextTitle = null;
 210
 211         /** @var string */
 212         public $action = 'submit';
 213
 214         /** @var bool */
 215         public $isConflict = false;
 216
 217         /** @var bool */
 218         public $isCssJsSubpage = false;
 219
 220         /** @var bool */
 221         public $isCssSubpage = false;
 222
 223         /** @var bool */
 224         public $isJsSubpage = false;
 225
 226         /** @var bool */
 227         public $isWrongCaseCssJsPage = false;
 228
 229         /** @var bool New page or new section */
 230         public $isNew = false;
 231
 232         /** @var bool */
 233         public $deletedSinceEdit;
 234
 235         /** @var string */
 236         public $formtype;
 237
 238         /** @var bool */
 239         public $firsttime;
 240
 241         /** @var bool|stdClass */
 242         public $lastDelete;
 243
 244         /** @var bool */
 245         public $mTokenOk = false;
 246
 247         /** @var bool */
 248         public $mTokenOkExceptSuffix = false;
 249
 250         /** @var bool */
 251         public $mTriedSave = false;
 252
 253         /** @var bool */
 254         public $incompleteForm = false;
 255
 256         /** @var bool */
 257         public $tooBig = false;
 258
 259         /** @var bool */
 260         public $kblength = false;
 261
 262         /** @var bool */
 263         public $missingComment = false;
 264
 265         /** @var bool */
 266         public $missingSummary = false;
 267
 268         /** @var bool */
 269         public $allowBlankSummary = false;
 270
 271         /** @var bool */
 272         protected $blankArticle = false;
 273
 274         /** @var bool */
 275         protected $allowBlankArticle = false;
 276
 277         /** @var bool */
 278         protected $selfRedirect = false;
 279
 280         /** @var bool */
 281         protected $allowSelfRedirect = false;
 282
 283         /** @var string */
 284         public $autoSumm = '';
 285
 286         /** @var string */
 287         public $hookError = '';
 288
 289         /** @var ParserOutput */
 290         public $mParserOutput;
 291
 292         /** @var bool Has a summary been preset using GET parameter &summary= ? */
 293         public $hasPresetSummary = false;
 294
 295         /** @var bool */
 296         public $mBaseRevision = false;
 297
 298         /** @var bool */
 299         public $mShowSummaryField = true;
 300
 301         # Form values
 302
 303         /** @var bool */
 304         public $save = false;
 305
 306         /** @var bool */
 307         public $preview = false;
 308
 309         /** @var bool */
 310         public $diff = false;
 311
 312         /** @var bool */
 313         public $minoredit = false;
 314
 315         /** @var bool */
 316         public $watchthis = false;
 317
 318         /** @var bool */
 319         public $recreate = false;
 320
 321         /** @var string */
 322         public $textbox1 = '';
 323
 324         /** @var string */
 325         public $textbox2 = '';
 326
 327         /** @var string */
 328         public $summary = '';
 329
 330         /** @var bool */
 331         public $nosummary = false;
 332
 333         /** @var string */
 334         public $edittime = '';
 335
 336         /** @var string */
 337         public $section = '';
 338
 339         /** @var string */
 340         public $sectiontitle = '';
 341
 342         /** @var string */
 343         public $starttime = '';
 344
 345         /** @var int */
 346         public $oldid = 0;
 347
 348         /** @var int */
 349         public $parentRevId = 0;
 350
 351         /** @var string */
 352         public $editintro = '';
 353
 354         /** @var null */
 355         public $scrolltop = null;
 356
 357         /** @var bool */
 358         public $bot = true;
 359
 360         /** @var null|string */
 361         public $contentModel = null;
 362
 363         /** @var null|string */
 364         public $contentFormat = null;
 365
 366         /** @var null|array */
 367         public $changeTags = null;
 368
 369         # Placeholders for text injection by hooks (must be HTML)
 370         # extensions should take care to _append_ to the present value
 371
 372         /** @var string Before even the preview */
 373         public $editFormPageTop = '';
 374         public $editFormTextTop = '';
 375         public $editFormTextBeforeContent = '';
 376         public $editFormTextAfterWarn = '';
 377         public $editFormTextAfterTools = '';
 378         public $editFormTextBottom = '';
 379         public $editFormTextAfterContent = '';
 380         public $previewTextAfterContent = '';
 381         public $mPreloadContent = null;
 382
 383         /* $didSave should be set to true whenever an article was successfully altered. */
 384         public $didSave = false;
 385         public $undidRev = 0;
 386
 387         public $suppressIntro = false;
 388
 389         /** @var bool */
 390         protected $edit;
 391
 392         /**
 393          * @var bool Set in ApiEditPage, based on ContentHandler::allowsDirectApiEditing
 394          */
 395         private $enableApiEditOverride = false;
 396
 397         /**
 398          * @param Article $article
 399          */
 400         public function __construct( Article $article ) {
 401                 $this->mArticle = $article;
 402                 $this->mTitle = $article->getTitle();
 403
 404                 $this->contentModel = $this->mTitle->getContentModel();
 405
 406                 $handler = ContentHandler::getForModelID( $this->contentModel );
 407                 $this->contentFormat = $handler->getDefaultFormat();
 408         }
 409
 410         /**
 411          * @return Article
 412          */
 413         public function getArticle() {
 414                 return $this->mArticle;
 415         }
 416
 417         /**
 418          * @since 1.19
 419          * @return Title
 420          */
 421         public function getTitle() {
 422                 return $this->mTitle;
 423         }
 424
 425         /**
 426          * Set the context Title object
 427          *
 428          * @param Title|null $title Title object or null
 429          */
 430         public function setContextTitle( $title ) {
 431                 $this->mContextTitle = $title;
 432         }
 433
 434         /**
 435          * Get the context title object.
 436          * If not set, $wgTitle will be returned. This behavior might change in
 437          * the future to return $this->mTitle instead.
 438          *
 439          * @return Title
 440          */
 441         public function getContextTitle() {
 442                 if ( is_null( $this->mContextTitle ) ) {
 443                         global $wgTitle;
 444                         return $wgTitle;
 445                 } else {
 446                         return $this->mContextTitle;
 447                 }
 448         }
 449
 450         /**
 451          * Returns if the given content model is editable.
 452          *
 453          * @param string $modelId The ID of the content model to test. Use CONTENT_MODEL_XXX constants.
 454          * @return bool
 455          * @throws MWException If $modelId has no known handler
 456          */
 457         public function isSupportedContentModel( $modelId ) {
 458                 return $this->enableApiEditOverride === true ||
 459                         ContentHandler::getForModelID( $modelId )->supportsDirectEditing();
 460         }
 461
 462         /**
 463          * Allow editing of content that supports API direct editing, but not general
 464          * direct editing. Set to false by default.
 465          *
 466          * @param bool $enableOverride
 467          */
 468         public function setApiEditOverride( $enableOverride ) {
 469                 $this->enableApiEditOverride = $enableOverride;
 470         }
 471
 472         function submit() {
 473                 $this->edit();
 474         }
 475
 476         /**
 477          * This is the function that gets called for "action=edit". It
 478          * sets up various member variables, then passes execution to
 479          * another function, usually showEditForm()
 480          *
 481          * The edit form is self-submitting, so that when things like
 482          * preview and edit conflicts occur, we get the same form back
 483          * with the extra stuff added.  Only when the final submission
 484          * is made and all is well do we actually save and redirect to
 485          * the newly-edited page.
 486          */
 487         function edit() {
 488                 global $wgOut, $wgRequest, $wgUser;
 489                 // Allow extensions to modify/prevent this form or submission
 490                 if ( !Hooks::run( 'AlternateEdit', array( $this ) ) ) {
 491                         return;
 492                 }
 493
 494                 wfDebug( __METHOD__ . ": enter\n" );
 495
 496                 // If they used redlink=1 and the page exists, redirect to the main article
 497                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 498                         $wgOut->redirect( $this->mTitle->getFullURL() );
 499                         return;
 500                 }
 501
 502                 $this->importFormData( $wgRequest );
 503                 $this->firsttime = false;
 504
 505                 if ( wfReadOnly() && $this->save ) {
 506                         // Force preview
 507                         $this->save = false;
 508                         $this->preview = true;
 509                 }
 510
 511                 if ( $this->save ) {
 512                         $this->formtype = 'save';
 513                 } elseif ( $this->preview ) {
 514                         $this->formtype = 'preview';
 515                 } elseif ( $this->diff ) {
 516                         $this->formtype = 'diff';
 517                 } else { # First time through
 518                         $this->firsttime = true;
 519                         if ( $this->previewOnOpen() ) {
 520                                 $this->formtype = 'preview';
 521                         } else {
 522                                 $this->formtype = 'initial';
 523                         }
 524                 }
 525
 526                 $permErrors = $this->getEditPermissionErrors( $this->save ? 'secure' : 'full' );
 527                 if ( $permErrors ) {
 528                         wfDebug( __METHOD__ . ": User can't edit\n" );
 529                         // Auto-block user's IP if the account was "hard" blocked
 530                         $wgUser->spreadAnyEditBlock();
 531
 532                         $this->displayPermissionsError( $permErrors );
 533
 534                         return;
 535                 }
 536
 537                 $this->isConflict = false;
 538                 // css / js subpages of user pages get a special treatment
 539                 $this->isCssJsSubpage = $this->mTitle->isCssJsSubpage();
 540                 $this->isCssSubpage = $this->mTitle->isCssSubpage();
 541                 $this->isJsSubpage = $this->mTitle->isJsSubpage();
 542                 // @todo FIXME: Silly assignment.
 543                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 544
 545                 # Show applicable editing introductions
 546                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 547                         $this->showIntro();
 548                 }
 549
 550                 # Attempt submission here.  This will check for edit conflicts,
 551                 # and redundantly check for locked database, blocked IPs, etc.
 552                 # that edit() already checked just in case someone tries to sneak
 553                 # in the back door with a hand-edited submission URL.
 554
 555                 if ( 'save' == $this->formtype ) {
 556                         $resultDetails = null;
 557                         $status = $this->attemptSave( $resultDetails );
 558                         if ( !$this->handleStatus( $status, $resultDetails ) ) {
 559                                 return;
 560                         }
 561                 }
 562
 563                 # First time through: get contents, set time for conflict
 564                 # checking, etc.
 565                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 566                         if ( $this->initialiseForm() === false ) {
 567                                 $this->noSuchSectionPage();
 568                                 return;
 569                         }
 570
 571                         if ( !$this->mTitle->getArticleID() ) {
 572                                 Hooks::run( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 573                         } else {
 574                                 Hooks::run( 'EditFormInitialText', array( $this ) );
 575                         }
 576
 577                 }
 578
 579                 $this->showEditForm();
 580         }
 581
 582         /**
 583          * @param string $rigor Same format as Title::getUserPermissionErrors()
 584          * @return array
 585          */
 586         protected function getEditPermissionErrors( $rigor = 'secure' ) {
 587                 global $wgUser;
 588
 589                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser, $rigor );
 590                 # Can this title be created?
 591                 if ( !$this->mTitle->exists() ) {
 592                         $permErrors = array_merge(
 593                                 $permErrors,
 594                                 wfArrayDiff2(
 595                                         $this->mTitle->getUserPermissionsErrors( 'create', $wgUser, $rigor ),
 596                                         $permErrors
 597                                 )
 598                         );
 599                 }
 600                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 601                 $remove = array();
 602                 foreach ( $permErrors as $error ) {
 603                         if ( ( $this->preview || $this->diff )
 604                                 && ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' )
 605                         ) {
 606                                 $remove[] = $error;
 607                         }
 608                 }
 609                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 610
 611                 return $permErrors;
 612         }
 613
 614         /**
 615          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 616          * but with the following differences:
 617          * - If redlink=1, the user will be redirected to the page
 618          * - If there is content to display or the error occurs while either saving,
 619          *   previewing or showing the difference, it will be a
 620          *   "View source for ..." page displaying the source code after the error message.
 621          *
 622          * @since 1.19
 623          * @param array $permErrors Array of permissions errors, as returned by
 624          *    Title::getUserPermissionsErrors().
 625          * @throws PermissionsError
 626          */
 627         protected function displayPermissionsError( array $permErrors ) {
 628                 global $wgRequest, $wgOut;
 629
 630                 if ( $wgRequest->getBool( 'redlink' ) ) {
 631                         // The edit page was reached via a red link.
 632                         // Redirect to the article page and let them click the edit tab if
 633                         // they really want a permission error.
 634                         $wgOut->redirect( $this->mTitle->getFullURL() );
 635                         return;
 636                 }
 637
 638                 $content = $this->getContentObject();
 639
 640                 # Use the normal message if there's nothing to display
 641                 if ( $this->firsttime && ( !$content || $content->isEmpty() ) ) {
 642                         $action = $this->mTitle->exists() ? 'edit' :
 643                                 ( $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 644                         throw new PermissionsError( $action, $permErrors );
 645                 }
 646
 647                 Hooks::run( 'EditPage::showReadOnlyForm:initial', array( $this, &$wgOut ) );
 648
 649                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 650                 $wgOut->setPageTitle( wfMessage(
 651                         'viewsource-title',
 652                         $this->getContextTitle()->getPrefixedText()
 653                 ) );
 654                 $wgOut->addBacklinkSubtitle( $this->getContextTitle() );
 655                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $permErrors, 'edit' ) );
 656                 $wgOut->addHTML( "<hr />\n" );
 657
 658                 # If the user made changes, preserve them when showing the markup
 659                 # (This happens when a user is blocked during edit, for instance)
 660                 if ( !$this->firsttime ) {
 661                         $text = $this->textbox1;
 662                         $wgOut->addWikiMsg( 'viewyourtext' );
 663                 } else {
 664                         $text = $this->toEditText( $content );
 665                         $wgOut->addWikiMsg( 'viewsourcetext' );
 666                 }
 667
 668                 $this->showTextbox( $text, 'wpTextbox1', array( 'readonly' ) );
 669
 670                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 671                         Linker::formatTemplates( $this->getTemplates() ) ) );
 672
 673                 $wgOut->addModules( 'mediawiki.action.edit.collapsibleFooter' );
 674
 675                 if ( $this->mTitle->exists() ) {
 676                         $wgOut->returnToMain( null, $this->mTitle );
 677                 }
 678         }
 679
 680         /**
 681          * Should we show a preview when the edit form is first shown?
 682          *
 683          * @return bool
 684          */
 685         protected function previewOnOpen() {
 686                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 687                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 688                         // Explicit override from request
 689                         return true;
 690                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 691                         // Explicit override from request
 692                         return false;
 693                 } elseif ( $this->section == 'new' ) {
 694                         // Nothing *to* preview for new sections
 695                         return false;
 696                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() )
 697                         && $wgUser->getOption( 'previewonfirst' )
 698                 ) {
 699                         // Standard preference behavior
 700                         return true;
 701                 } elseif ( !$this->mTitle->exists()
 702                         && isset( $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 703                         && $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()]
 704                 ) {
 705                         // Categories are special
 706                         return true;
 707                 } else {
 708                         return false;
 709                 }
 710         }
 711
 712         /**
 713          * Checks whether the user entered a skin name in uppercase,
 714          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 715          *
 716          * @return bool
 717          */
 718         protected function isWrongCaseCssJsPage() {
 719                 if ( $this->mTitle->isCssJsSubpage() ) {
 720                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 721                         $skins = array_merge(
 722                                 array_keys( Skin::getSkinNames() ),
 723                                 array( 'common' )
 724                         );
 725                         return !in_array( $name, $skins )
 726                                 && in_array( strtolower( $name ), $skins );
 727                 } else {
 728                         return false;
 729                 }
 730         }
 731
 732         /**
 733          * Returns whether section editing is supported for the current page.
 734          * Subclasses may override this to replace the default behavior, which is
 735          * to check ContentHandler::supportsSections.
 736          *
 737          * @return bool True if this edit page supports sections, false otherwise.
 738          */
 739         protected function isSectionEditSupported() {
 740                 $contentHandler = ContentHandler::getForTitle( $this->mTitle );
 741                 return $contentHandler->supportsSections();
 742         }
 743
 744         /**
 745          * This function collects the form data and uses it to populate various member variables.
 746          * @param WebRequest $request
 747          * @throws ErrorPageError
 748          */
 749         function importFormData( &$request ) {
 750                 global $wgContLang, $wgUser;
 751
 752                 # Section edit can come from either the form or a link
 753                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 754
 755                 if ( $this->section !== null && $this->section !== '' && !$this->isSectionEditSupported() ) {
 756                         throw new ErrorPageError( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
 757                 }
 758
 759                 $this->isNew = !$this->mTitle->exists() || $this->section == 'new';
 760
 761                 if ( $request->wasPosted() ) {
 762                         # These fields need to be checked for encoding.
 763                         # Also remove trailing whitespace, but don't remove _initial_
 764                         # whitespace from the text boxes. This may be significant formatting.
 765                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 766                         if ( !$request->getCheck( 'wpTextbox2' ) ) {
 767                                 // Skip this if wpTextbox2 has input, it indicates that we came
 768                                 // from a conflict page with raw page text, not a custom form
 769                                 // modified by subclasses
 770                                 $textbox1 = $this->importContentFormData( $request );
 771                                 if ( $textbox1 !== null ) {
 772                                         $this->textbox1 = $textbox1;
 773                                 }
 774                         }
 775
 776                         # Truncate for whole multibyte characters
 777                         $this->summary = $wgContLang->truncate( $request->getText( 'wpSummary' ), 255 );
 778
 779                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 780                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 781                         # section titles.
 782                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 783
 784                         # Treat sectiontitle the same way as summary.
 785                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 786                         # currently doing double duty as both edit summary and section title. Right now this
 787                         # is just to allow API edits to work around this limitation, but this should be
 788                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 789                         $this->sectiontitle = $wgContLang->truncate( $request->getText( 'wpSectionTitle' ), 255 );
 790                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 791
 792                         $this->edittime = $request->getVal( 'wpEdittime' );
 793                         $this->starttime = $request->getVal( 'wpStarttime' );
 794
 795                         $undidRev = $request->getInt( 'wpUndidRevision' );
 796                         if ( $undidRev ) {
 797                                 $this->undidRev = $undidRev;
 798                         }
 799
 800                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 801
 802                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 803                                 // wpTextbox1 field is missing, possibly due to being "too big"
 804                                 // according to some filter rules such as Suhosin's setting for
 805                                 // suhosin.request.max_value_length (d'oh)
 806                                 $this->incompleteForm = true;
 807                         } else {
 808                                 // If we receive the last parameter of the request, we can fairly
 809                                 // claim the POST request has not been truncated.
 810
 811                                 // TODO: softened the check for cutover.  Once we determine
 812                                 // that it is safe, we should complete the transition by
 813                                 // removing the "edittime" clause.
 814                                 $this->incompleteForm = ( !$request->getVal( 'wpUltimateParam' )
 815                                         && is_null( $this->edittime ) );
 816                         }
 817                         if ( $this->incompleteForm ) {
 818                                 # If the form is incomplete, force to preview.
 819                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 820                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 821                                 $this->preview = true;
 822                         } else {
 823                                 $this->preview = $request->getCheck( 'wpPreview' );
 824                                 $this->diff = $request->getCheck( 'wpDiff' );
 825
 826                                 // Remember whether a save was requested, so we can indicate
 827                                 // if we forced preview due to session failure.
 828                                 $this->mTriedSave = !$this->preview;
 829
 830                                 if ( $this->tokenOk( $request ) ) {
 831                                         # Some browsers will not report any submit button
 832                                         # if the user hits enter in the comment box.
 833                                         # The unmarked state will be assumed to be a save,
 834                                         # if the form seems otherwise complete.
 835                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 836                                 } elseif ( $this->diff ) {
 837                                         # Failed token check, but only requested "Show Changes".
 838                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 839                                 } else {
 840                                         # Page might be a hack attempt posted from
 841                                         # an external site. Preview instead of saving.
 842                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 843                                         $this->preview = true;
 844                                 }
 845                         }
 846                         $this->save = !$this->preview && !$this->diff;
 847                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 848                                 $this->edittime = null;
 849                         }
 850
 851                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 852                                 $this->starttime = null;
 853                         }
 854
 855                         $this->recreate = $request->getCheck( 'wpRecreate' );
 856
 857                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 858                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 859
 860                         # Don't force edit summaries when a user is editing their own user or talk page
 861                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK )
 862                                 && $this->mTitle->getText() == $wgUser->getName()
 863                         ) {
 864                                 $this->allowBlankSummary = true;
 865                         } else {
 866                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' )
 867                                         || !$wgUser->getOption( 'forceeditsummary' );
 868                         }
 869
 870                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 871
 872                         $this->allowBlankArticle = $request->getBool( 'wpIgnoreBlankArticle' );
 873                         $this->allowSelfRedirect = $request->getBool( 'wpIgnoreSelfRedirect' );
 874
 875                         $changeTags = $request->getVal( 'wpChangeTags' );
 876                         if ( is_null( $changeTags ) || $changeTags === '' ) {
 877                                 $this->changeTags = array();
 878                         } else {
 879                                 $this->changeTags = array_filter( array_map( 'trim', explode( ',',
 880                                         $changeTags ) ) );
 881                         }
 882                 } else {
 883                         # Not a posted form? Start with nothing.
 884                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 885                         $this->textbox1 = '';
 886                         $this->summary = '';
 887                         $this->sectiontitle = '';
 888                         $this->edittime = '';
 889                         $this->starttime = wfTimestampNow();
 890                         $this->edit = false;
 891                         $this->preview = false;
 892                         $this->save = false;
 893                         $this->diff = false;
 894                         $this->minoredit = false;
 895                         // Watch may be overridden by request parameters
 896                         $this->watchthis = $request->getBool( 'watchthis', false );
 897                         $this->recreate = false;
 898
 899                         // When creating a new section, we can preload a section title by passing it as the
 900                         // preloadtitle parameter in the URL (Bug 13100)
 901                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 902                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
 903                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
 904                                 $this->summary = $request->getVal( 'preloadtitle' );
 905                         } elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 906                                 $this->summary = $request->getText( 'summary' );
 907                                 if ( $this->summary !== '' ) {
 908                                         $this->hasPresetSummary = true;
 909                                 }
 910                         }
 911
 912                         if ( $request->getVal( 'minor' ) ) {
 913                                 $this->minoredit = true;
 914                         }
 915                 }
 916
 917                 $this->oldid = $request->getInt( 'oldid' );
 918                 $this->parentRevId = $request->getInt( 'parentRevId' );
 919
 920                 $this->bot = $request->getBool( 'bot', true );
 921                 $this->nosummary = $request->getBool( 'nosummary' );
 922
 923                 // May be overridden by revision.
 924                 $this->contentModel = $request->getText( 'model', $this->contentModel );
 925                 // May be overridden by revision.
 926                 $this->contentFormat = $request->getText( 'format', $this->contentFormat );
 927
 928                 if ( !ContentHandler::getForModelID( $this->contentModel )
 929                         ->isSupportedFormat( $this->contentFormat )
 930                 ) {
 931                         throw new ErrorPageError(
 932                                 'editpage-notsupportedcontentformat-title',
 933                                 'editpage-notsupportedcontentformat-text',
 934                                 array( $this->contentFormat, ContentHandler::getLocalizedName( $this->contentModel ) )
 935                         );
 936                 }
 937
 938                 /**
 939                  * @todo Check if the desired model is allowed in this namespace, and if
 940                  *   a transition from the page's current model to the new model is
 941                  *   allowed.
 942                  */
 943
 944                 $this->editintro = $request->getText( 'editintro',
 945                         // Custom edit intro for new sections
 946                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 947
 948                 // Allow extensions to modify form data
 949                 Hooks::run( 'EditPage::importFormData', array( $this, $request ) );
 950
 951         }
 952
 953         /**
 954          * Subpage overridable method for extracting the page content data from the
 955          * posted form to be placed in $this->textbox1, if using customized input
 956          * this method should be overridden and return the page text that will be used
 957          * for saving, preview parsing and so on...
 958          *
 959          * @param WebRequest $request
 960          */
 961         protected function importContentFormData( &$request ) {
 962                 return; // Don't do anything, EditPage already extracted wpTextbox1
 963         }
 964
 965         /**
 966          * Initialise form fields in the object
 967          * Called on the first invocation, e.g. when a user clicks an edit link
 968          * @return bool If the requested section is valid
 969          */
 970         function initialiseForm() {
 971                 global $wgUser;
 972                 $this->edittime = $this->mArticle->getTimestamp();
 973
 974                 $content = $this->getContentObject( false ); #TODO: track content object?!
 975                 if ( $content === false ) {
 976                         return false;
 977                 }
 978                 $this->textbox1 = $this->toEditText( $content );
 979
 980                 // activate checkboxes if user wants them to be always active
 981                 # Sort out the "watch" checkbox
 982                 if ( $wgUser->getOption( 'watchdefault' ) ) {
 983                         # Watch all edits
 984                         $this->watchthis = true;
 985                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 986                         # Watch creations
 987                         $this->watchthis = true;
 988                 } elseif ( $wgUser->isWatched( $this->mTitle ) ) {
 989                         # Already watched
 990                         $this->watchthis = true;
 991                 }
 992                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) {
 993                         $this->minoredit = true;
 994                 }
 995                 if ( $this->textbox1 === false ) {
 996                         return false;
 997                 }
 998                 return true;
 999         }
1000
1001         /**
1002          * @param Content|null $def_content The default value to return
1003          *
1004          * @return Content|null Content on success, $def_content for invalid sections
1005          *
1006          * @since 1.21
1007          */
1008         protected function getContentObject( $def_content = null ) {
1009                 global $wgOut, $wgRequest, $wgUser, $wgContLang;
1010
1011                 $content = false;
1012
1013                 // For message page not locally set, use the i18n message.
1014                 // For other non-existent articles, use preload text if any.
1015                 if ( !$this->mTitle->exists() || $this->section == 'new' ) {
1016                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
1017                                 # If this is a system message, get the default text.
1018                                 $msg = $this->mTitle->getDefaultMessageText();
1019
1020                                 $content = $this->toEditContent( $msg );
1021                         }
1022                         if ( $content === false ) {
1023                                 # If requested, preload some text.
1024                                 $preload = $wgRequest->getVal( 'preload',
1025                                         // Custom preload text for new sections
1026                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
1027                                 $params = $wgRequest->getArray( 'preloadparams', array() );
1028
1029                                 $content = $this->getPreloadedContent( $preload, $params );
1030                         }
1031                 // For existing pages, get text based on "undo" or section parameters.
1032                 } else {
1033                         if ( $this->section != '' ) {
1034                                 // Get section edit text (returns $def_text for invalid sections)
1035                                 $orig = $this->getOriginalContent( $wgUser );
1036                                 $content = $orig ? $orig->getSection( $this->section ) : null;
1037
1038                                 if ( !$content ) {
1039                                         $content = $def_content;
1040                                 }
1041                         } else {
1042                                 $undoafter = $wgRequest->getInt( 'undoafter' );
1043                                 $undo = $wgRequest->getInt( 'undo' );
1044
1045                                 if ( $undo > 0 && $undoafter > 0 ) {
1046                                         $undorev = Revision::newFromId( $undo );
1047                                         $oldrev = Revision::newFromId( $undoafter );
1048
1049                                         # Sanity check, make sure it's the right page,
1050                                         # the revisions exist and they were not deleted.
1051                                         # Otherwise, $content will be left as-is.
1052                                         if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
1053                                                 !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
1054                                                 !$oldrev->isDeleted( Revision::DELETED_TEXT )
1055                                         ) {
1056                                                 $content = $this->mArticle->getUndoContent( $undorev, $oldrev );
1057
1058                                                 if ( $content === false ) {
1059                                                         # Warn the user that something went wrong
1060                                                         $undoMsg = 'failure';
1061                                                 } else {
1062                                                         $oldContent = $this->mArticle->getPage()->getContent( Revision::RAW );
1063                                                         $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
1064                                                         $newContent = $content->preSaveTransform( $this->mTitle, $wgUser, $popts );
1065
1066                                                         if ( $newContent->equals( $oldContent ) ) {
1067                                                                 # Tell the user that the undo results in no change,
1068                                                                 # i.e. the revisions were already undone.
1069                                                                 $undoMsg = 'nochange';
1070                                                                 $content = false;
1071                                                         } else {
1072                                                                 # Inform the user of our success and set an automatic edit summary
1073                                                                 $undoMsg = 'success';
1074
1075                                                                 # If we just undid one rev, use an autosummary
1076                                                                 $firstrev = $oldrev->getNext();
1077                                                                 if ( $firstrev && $firstrev->getId() == $undo ) {
1078                                                                         $userText = $undorev->getUserText();
1079                                                                         if ( $userText === '' ) {
1080                                                                                 $undoSummary = wfMessage(
1081                                                                                         'undo-summary-username-hidden',
1082                                                                                         $undo
1083                                                                                 )->inContentLanguage()->text();
1084                                                                         } else {
1085                                                                                 $undoSummary = wfMessage(
1086                                                                                         'undo-summary',
1087                                                                                         $undo,
1088                                                                                         $userText
1089                                                                                 )->inContentLanguage()->text();
1090                                                                         }
1091                                                                         if ( $this->summary === '' ) {
1092                                                                                 $this->summary = $undoSummary;
1093                                                                         } else {
1094                                                                                 $this->summary = $undoSummary . wfMessage( 'colon-separator' )
1095                                                                                         ->inContentLanguage()->text() . $this->summary;
1096                                                                         }
1097                                                                         $this->undidRev = $undo;
1098                                                                 }
1099                                                                 $this->formtype = 'diff';
1100                                                         }
1101                                                 }
1102                                         } else {
1103                                                 // Failed basic sanity checks.
1104                                                 // Older revisions may have been removed since the link
1105                                                 // was created, or we may simply have got bogus input.
1106                                                 $undoMsg = 'norev';
1107                                         }
1108
1109                                         // Messages: undo-success, undo-failure, undo-norev, undo-nochange
1110                                         $class = ( $undoMsg == 'success' ? '' : 'error ' ) . "mw-undo-{$undoMsg}";
1111                                         $this->editFormPageTop .= $wgOut->parse( "<div class=\"{$class}\">" .
1112                                                 wfMessage( 'undo-' . $undoMsg )->plain() . '</div>', true, /* interface */true );
1113                                 }
1114
1115                                 if ( $content === false ) {
1116                                         $content = $this->getOriginalContent( $wgUser );
1117                                 }
1118                         }
1119                 }
1120
1121                 return $content;
1122         }
1123
1124         /**
1125          * Get the content of the wanted revision, without section extraction.
1126          *
1127          * The result of this function can be used to compare user's input with
1128          * section replaced in its context (using WikiPage::replaceSection())
1129          * to the original text of the edit.
1130          *
1131          * This differs from Article::getContent() that when a missing revision is
1132          * encountered the result will be null and not the
1133          * 'missing-revision' message.
1134          *
1135          * @since 1.19
1136          * @param User $user The user to get the revision for
1137          * @return Content|null
1138          */
1139         private function getOriginalContent( User $user ) {
1140                 if ( $this->section == 'new' ) {
1141                         return $this->getCurrentContent();
1142                 }
1143                 $revision = $this->mArticle->getRevisionFetched();
1144                 if ( $revision === null ) {
1145                         if ( !$this->contentModel ) {
1146                                 $this->contentModel = $this->getTitle()->getContentModel();
1147                         }
1148                         $handler = ContentHandler::getForModelID( $this->contentModel );
1149
1150                         return $handler->makeEmptyContent();
1151                 }
1152                 $content = $revision->getContent( Revision::FOR_THIS_USER, $user );
1153                 return $content;
1154         }
1155
1156         /**
1157          * Get the current content of the page. This is basically similar to
1158          * WikiPage::getContent( Revision::RAW ) except that when the page doesn't exist an empty
1159          * content object is returned instead of null.
1160          *
1161          * @since 1.21
1162          * @return Content
1163          */
1164         protected function getCurrentContent() {
1165                 $rev = $this->mArticle->getRevision();
1166                 $content = $rev ? $rev->getContent( Revision::RAW ) : null;
1167
1168                 if ( $content === false || $content === null ) {
1169                         if ( !$this->contentModel ) {
1170                                 $this->contentModel = $this->getTitle()->getContentModel();
1171                         }
1172                         $handler = ContentHandler::getForModelID( $this->contentModel );
1173
1174                         return $handler->makeEmptyContent();
1175                 } else {
1176                         # nasty side-effect, but needed for consistency
1177                         $this->contentModel = $rev->getContentModel();
1178                         $this->contentFormat = $rev->getContentFormat();
1179
1180                         return $content;
1181                 }
1182         }
1183
1184         /**
1185          * Use this method before edit() to preload some content into the edit box
1186          *
1187          * @param Content $content
1188          *
1189          * @since 1.21
1190          */
1191         public function setPreloadedContent( Content $content ) {
1192                 $this->mPreloadContent = $content;
1193         }
1194
1195         /**
1196          * Get the contents to be preloaded into the box, either set by
1197          * an earlier setPreloadText() or by loading the given page.
1198          *
1199          * @param string $preload Representing the title to preload from.
1200          * @param array $params Parameters to use (interface-message style) in the preloaded text
1201          *
1202          * @return Content
1203          *
1204          * @since 1.21
1205          */
1206         protected function getPreloadedContent( $preload, $params = array() ) {
1207                 global $wgUser;
1208
1209                 if ( !empty( $this->mPreloadContent ) ) {
1210                         return $this->mPreloadContent;
1211                 }
1212
1213                 $handler = ContentHandler::getForTitle( $this->getTitle() );
1214
1215                 if ( $preload === '' ) {
1216                         return $handler->makeEmptyContent();
1217                 }
1218
1219                 $title = Title::newFromText( $preload );
1220                 # Check for existence to avoid getting MediaWiki:Noarticletext
1221                 if ( $title === null || !$title->exists() || !$title->userCan( 'read', $wgUser ) ) {
1222                         //TODO: somehow show a warning to the user!
1223                         return $handler->makeEmptyContent();
1224                 }
1225
1226                 $page = WikiPage::factory( $title );
1227                 if ( $page->isRedirect() ) {
1228                         $title = $page->getRedirectTarget();
1229                         # Same as before
1230                         if ( $title === null || !$title->exists() || !$title->userCan( 'read', $wgUser ) ) {
1231                                 //TODO: somehow show a warning to the user!
1232                                 return $handler->makeEmptyContent();
1233                         }
1234                         $page = WikiPage::factory( $title );
1235                 }
1236
1237                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1238                 $content = $page->getContent( Revision::RAW );
1239
1240                 if ( !$content ) {
1241                         //TODO: somehow show a warning to the user!
1242                         return $handler->makeEmptyContent();
1243                 }
1244
1245                 if ( $content->getModel() !== $handler->getModelID() ) {
1246                         $converted = $content->convert( $handler->getModelID() );
1247
1248                         if ( !$converted ) {
1249                                 //TODO: somehow show a warning to the user!
1250                                 wfDebug( "Attempt to preload incompatible content: " .
1251                                         "can't convert " . $content->getModel() .
1252                                         " to " . $handler->getModelID() );
1253
1254                                 return $handler->makeEmptyContent();
1255                         }
1256
1257                         $content = $converted;
1258                 }
1259
1260                 return $content->preloadTransform( $title, $parserOptions, $params );
1261         }
1262
1263         /**
1264          * Make sure the form isn't faking a user's credentials.
1265          *
1266          * @param WebRequest $request
1267          * @return bool
1268          * @private
1269          */
1270         function tokenOk( &$request ) {
1271                 global $wgUser;
1272                 $token = $request->getVal( 'wpEditToken' );
1273                 $this->mTokenOk = $wgUser->matchEditToken( $token );
1274                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
1275                 return $this->mTokenOk;
1276         }
1277
1278         /**
1279          * Sets post-edit cookie indicating the user just saved a particular revision.
1280          *
1281          * This uses a temporary cookie for each revision ID so separate saves will never
1282          * interfere with each other.
1283          *
1284          * The cookie is deleted in the mediawiki.action.view.postEdit JS module after
1285          * the redirect.  It must be clearable by JavaScript code, so it must not be
1286          * marked HttpOnly. The JavaScript code converts the cookie to a wgPostEdit config
1287          * variable.
1288          *
1289          * If the variable were set on the server, it would be cached, which is unwanted
1290          * since the post-edit state should only apply to the load right after the save.
1291          *
1292          * @param int $statusValue The status value (to check for new article status)
1293          */
1294         protected function setPostEditCookie( $statusValue ) {
1295                 $revisionId = $this->mArticle->getLatest();
1296                 $postEditKey = self::POST_EDIT_COOKIE_KEY_PREFIX . $revisionId;
1297
1298                 $val = 'saved';
1299                 if ( $statusValue == self::AS_SUCCESS_NEW_ARTICLE ) {
1300                         $val = 'created';
1301                 } elseif ( $this->oldid ) {
1302                         $val = 'restored';
1303                 }
1304
1305                 $response = RequestContext::getMain()->getRequest()->response();
1306                 $response->setcookie( $postEditKey, $val, time() + self::POST_EDIT_COOKIE_DURATION, array(
1307                         'httpOnly' => false,
1308                 ) );
1309         }
1310
1311         /**
1312          * Attempt submission
1313          * @param array $resultDetails See docs for $result in internalAttemptSave
1314          * @throws UserBlockedError|ReadOnlyError|ThrottledError|PermissionsError
1315          * @return Status The resulting status object.
1316          */
1317         public function attemptSave( &$resultDetails = false ) {
1318                 global $wgUser;
1319
1320                 # Allow bots to exempt some edits from bot flagging
1321                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
1322                 $status = $this->internalAttemptSave( $resultDetails, $bot );
1323
1324                 Hooks::run( 'EditPage::attemptSave:after', array( $this, $status, $resultDetails ) );
1325
1326                 return $status;
1327         }
1328
1329         /**
1330          * Handle status, such as after attempt save
1331          *
1332          * @param Status $status
1333          * @param array|bool $resultDetails
1334          *
1335          * @throws ErrorPageError
1336          * @return bool False, if output is done, true if rest of the form should be displayed
1337          */
1338         private function handleStatus( Status $status, $resultDetails ) {
1339                 global $wgUser, $wgOut;
1340
1341                 /**
1342                  * @todo FIXME: once the interface for internalAttemptSave() is made
1343                  *   nicer, this should use the message in $status
1344                  */
1345                 if ( $status->value == self::AS_SUCCESS_UPDATE
1346                         || $status->value == self::AS_SUCCESS_NEW_ARTICLE
1347                 ) {
1348                         $this->didSave = true;
1349                         if ( !$resultDetails['nullEdit'] ) {
1350                                 $this->setPostEditCookie( $status->value );
1351                         }
1352                 }
1353
1354                 switch ( $status->value ) {
1355                         case self::AS_HOOK_ERROR_EXPECTED:
1356                         case self::AS_CONTENT_TOO_BIG:
1357                         case self::AS_ARTICLE_WAS_DELETED:
1358                         case self::AS_CONFLICT_DETECTED:
1359                         case self::AS_SUMMARY_NEEDED:
1360                         case self::AS_TEXTBOX_EMPTY:
1361                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
1362                         case self::AS_END:
1363                         case self::AS_BLANK_ARTICLE:
1364                         case self::AS_SELF_REDIRECT:
1365                                 return true;
1366
1367                         case self::AS_HOOK_ERROR:
1368                                 return false;
1369
1370                         case self::AS_CANNOT_USE_CUSTOM_MODEL:
1371                         case self::AS_PARSE_ERROR:
1372                                 $wgOut->addWikiText( '<div class="error">' . $status->getWikiText() . '</div>' );
1373                                 return true;
1374
1375                         case self::AS_SUCCESS_NEW_ARTICLE:
1376                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
1377                                 $anchor = isset( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
1378                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
1379                                 return false;
1380
1381                         case self::AS_SUCCESS_UPDATE:
1382                                 $extraQuery = '';
1383                                 $sectionanchor = $resultDetails['sectionanchor'];
1384
1385                                 // Give extensions a chance to modify URL query on update
1386                                 Hooks::run(
1387                                         'ArticleUpdateBeforeRedirect',
1388                                         array( $this->mArticle, &$sectionanchor, &$extraQuery )
1389                                 );
1390
1391                                 if ( $resultDetails['redirect'] ) {
1392                                         if ( $extraQuery == '' ) {
1393                                                 $extraQuery = 'redirect=no';
1394                                         } else {
1395                                                 $extraQuery = 'redirect=no&' . $extraQuery;
1396                                         }
1397                                 }
1398                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
1399                                 return false;
1400
1401                         case self::AS_SPAM_ERROR:
1402                                 $this->spamPageWithContent( $resultDetails['spam'] );
1403                                 return false;
1404
1405                         case self::AS_BLOCKED_PAGE_FOR_USER:
1406                                 throw new UserBlockedError( $wgUser->getBlock() );
1407
1408                         case self::AS_IMAGE_REDIRECT_ANON:
1409                         case self::AS_IMAGE_REDIRECT_LOGGED:
1410                                 throw new PermissionsError( 'upload' );
1411
1412                         case self::AS_READ_ONLY_PAGE_ANON:
1413                         case self::AS_READ_ONLY_PAGE_LOGGED:
1414                                 throw new PermissionsError( 'edit' );
1415
1416                         case self::AS_READ_ONLY_PAGE:
1417                                 throw new ReadOnlyError;
1418
1419                         case self::AS_RATE_LIMITED:
1420                                 throw new ThrottledError();
1421
1422                         case self::AS_NO_CREATE_PERMISSION:
1423                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
1424                                 throw new PermissionsError( $permission );
1425
1426                         case self::AS_NO_CHANGE_CONTENT_MODEL:
1427                                 throw new PermissionsError( 'editcontentmodel' );
1428
1429                         default:
1430                                 // We don't recognize $status->value. The only way that can happen
1431                                 // is if an extension hook aborted from inside ArticleSave.
1432                                 // Render the status object into $this->hookError
1433                                 // FIXME this sucks, we should just use the Status object throughout
1434                                 $this->hookError = '<div class="error">' . $status->getWikitext() .
1435                                         '</div>';
1436                                 return true;
1437                 }
1438         }
1439
1440         /**
1441          * Run hooks that can filter edits just before they get saved.
1442          *
1443          * @param Content $content The Content to filter.
1444          * @param Status $status For reporting the outcome to the caller
1445          * @param User $user The user performing the edit
1446          *
1447          * @return bool
1448          */
1449         protected function runPostMergeFilters( Content $content, Status $status, User $user ) {
1450                 // Run old style post-section-merge edit filter
1451                 if ( !ContentHandler::runLegacyHooks( 'EditFilterMerged',
1452                         array( $this, $content, &$this->hookError, $this->summary ) )
1453                 ) {
1454                         # Error messages etc. could be handled within the hook...
1455                         $status->fatal( 'hookaborted' );
1456                         $status->value = self::AS_HOOK_ERROR;
1457                         return false;
1458                 } elseif ( $this->hookError != '' ) {
1459                         # ...or the hook could be expecting us to produce an error
1460                         $status->fatal( 'hookaborted' );
1461                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1462                         return false;
1463                 }
1464
1465                 // Run new style post-section-merge edit filter
1466                 if ( !Hooks::run( 'EditFilterMergedContent',
1467                                 array( $this->mArticle->getContext(), $content, $status, $this->summary,
1468                                 $user, $this->minoredit ) )
1469                 ) {
1470                         # Error messages etc. could be handled within the hook...
1471                         if ( $status->isGood() ) {
1472                                 $status->fatal( 'hookaborted' );
1473                                 // Not setting $this->hookError here is a hack to allow the hook
1474                                 // to cause a return to the edit page without $this->hookError
1475                                 // being set. This is used by ConfirmEdit to display a captcha
1476                                 // without any error message cruft.
1477                         } else {
1478                                 $this->hookError = $status->getWikiText();
1479                         }
1480                         // Use the existing $status->value if the hook set it
1481                         if ( !$status->value ) {
1482                                 $status->value = self::AS_HOOK_ERROR;
1483                         }
1484                         return false;
1485                 } elseif ( !$status->isOK() ) {
1486                         # ...or the hook could be expecting us to produce an error
1487                         // FIXME this sucks, we should just use the Status object throughout
1488                         $this->hookError = $status->getWikiText();
1489                         $status->fatal( 'hookaborted' );
1490                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1491                         return false;
1492                 }
1493
1494                 return true;
1495         }
1496
1497         /**
1498          * Return the summary to be used for a new section.
1499          *
1500          * @param string $sectionanchor Set to the section anchor text
1501          * @return string
1502          */
1503         private function newSectionSummary( &$sectionanchor = null ) {
1504                 global $wgParser;
1505
1506                 if ( $this->sectiontitle !== '' ) {
1507                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1508                         // If no edit summary was specified, create one automatically from the section
1509                         // title and have it link to the new section. Otherwise, respect the summary as
1510                         // passed.
1511                         if ( $this->summary === '' ) {
1512                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1513                                 return wfMessage( 'newsectionsummary' )
1514                                         ->rawParams( $cleanSectionTitle )->inContentLanguage()->text();
1515                         }
1516                 } elseif ( $this->summary !== '' ) {
1517                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1518                         # This is a new section, so create a link to the new section
1519                         # in the revision summary.
1520                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1521                         return wfMessage( 'newsectionsummary' )
1522                                 ->rawParams( $cleanSummary )->inContentLanguage()->text();
1523                 }
1524                 return $this->summary;
1525         }
1526
1527         /**
1528          * Attempt submission (no UI)
1529          *
1530          * @param array $result Array to add statuses to, currently with the
1531          *   possible keys:
1532          *   - spam (string): Spam string from content if any spam is detected by
1533          *     matchSpamRegex.
1534          *   - sectionanchor (string): Section anchor for a section save.
1535          *   - nullEdit (boolean): Set if doEditContent is OK.  True if null edit,
1536          *     false otherwise.
1537          *   - redirect (bool): Set if doEditContent is OK. True if resulting
1538          *     revision is a redirect.
1539          * @param bool $bot True if edit is being made under the bot right.
1540          *
1541          * @return Status Status object, possibly with a message, but always with
1542          *   one of the AS_* constants in $status->value,
1543          *
1544          * @todo FIXME: This interface is TERRIBLE, but hard to get rid of due to
1545          *   various error display idiosyncrasies. There are also lots of cases
1546          *   where error metadata is set in the object and retrieved later instead
1547          *   of being returned, e.g. AS_CONTENT_TOO_BIG and
1548          *   AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some
1549          * time.
1550          */
1551         function internalAttemptSave( &$result, $bot = false ) {
1552                 global $wgUser, $wgRequest, $wgParser, $wgMaxArticleSize;
1553                 global $wgContentHandlerUseDB;
1554
1555                 $status = Status::newGood();
1556
1557                 if ( !Hooks::run( 'EditPage::attemptSave', array( $this ) ) ) {
1558                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
1559                         $status->fatal( 'hookaborted' );
1560                         $status->value = self::AS_HOOK_ERROR;
1561                         return $status;
1562                 }
1563
1564                 $spam = $wgRequest->getText( 'wpAntispam' );
1565                 if ( $spam !== '' ) {
1566                         wfDebugLog(
1567                                 'SimpleAntiSpam',
1568                                 $wgUser->getName() .
1569                                 ' editing "' .
1570                                 $this->mTitle->getPrefixedText() .
1571                                 '" submitted bogus field "' .
1572                                 $spam .
1573                                 '"'
1574                         );
1575                         $status->fatal( 'spamprotectionmatch', false );
1576                         $status->value = self::AS_SPAM_ERROR;
1577                         return $status;
1578                 }
1579
1580                 try {
1581                         # Construct Content object
1582                         $textbox_content = $this->toEditContent( $this->textbox1 );
1583                 } catch ( MWContentSerializationException $ex ) {
1584                         $status->fatal(
1585                                 'content-failed-to-parse',
1586                                 $this->contentModel,
1587                                 $this->contentFormat,
1588                                 $ex->getMessage()
1589                         );
1590                         $status->value = self::AS_PARSE_ERROR;
1591                         return $status;
1592                 }
1593
1594                 # Check image redirect
1595                 if ( $this->mTitle->getNamespace() == NS_FILE &&
1596                         $textbox_content->isRedirect() &&
1597                         !$wgUser->isAllowed( 'upload' )
1598                 ) {
1599                                 $code = $wgUser->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
1600                                 $status->setResult( false, $code );
1601
1602                                 return $status;
1603                 }
1604
1605                 # Check for spam
1606                 $match = self::matchSummarySpamRegex( $this->summary );
1607                 if ( $match === false && $this->section == 'new' ) {
1608                         # $wgSpamRegex is enforced on this new heading/summary because, unlike
1609                         # regular summaries, it is added to the actual wikitext.
1610                         if ( $this->sectiontitle !== '' ) {
1611                                 # This branch is taken when the API is used with the 'sectiontitle' parameter.
1612                                 $match = self::matchSpamRegex( $this->sectiontitle );
1613                         } else {
1614                                 # This branch is taken when the "Add Topic" user interface is used, or the API
1615                                 # is used with the 'summary' parameter.
1616                                 $match = self::matchSpamRegex( $this->summary );
1617                         }
1618                 }
1619                 if ( $match === false ) {
1620                         $match = self::matchSpamRegex( $this->textbox1 );
1621                 }
1622                 if ( $match !== false ) {
1623                         $result['spam'] = $match;
1624                         $ip = $wgRequest->getIP();
1625                         $pdbk = $this->mTitle->getPrefixedDBkey();
1626                         $match = str_replace( "\n", '', $match );
1627                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
1628                         $status->fatal( 'spamprotectionmatch', $match );
1629                         $status->value = self::AS_SPAM_ERROR;
1630                         return $status;
1631                 }
1632                 if ( !Hooks::run(
1633                         'EditFilter',
1634                         array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) )
1635                 ) {
1636                         # Error messages etc. could be handled within the hook...
1637                         $status->fatal( 'hookaborted' );
1638                         $status->value = self::AS_HOOK_ERROR;
1639                         return $status;
1640                 } elseif ( $this->hookError != '' ) {
1641                         # ...or the hook could be expecting us to produce an error
1642                         $status->fatal( 'hookaborted' );
1643                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1644                         return $status;
1645                 }
1646
1647                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
1648                         // Auto-block user's IP if the account was "hard" blocked
1649                         $wgUser->spreadAnyEditBlock();
1650                         # Check block state against master, thus 'false'.
1651                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1652                         return $status;
1653                 }
1654
1655                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1656                 if ( $this->kblength > $wgMaxArticleSize ) {
1657                         // Error will be displayed by showEditForm()
1658                         $this->tooBig = true;
1659                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1660                         return $status;
1661                 }
1662
1663                 if ( !$wgUser->isAllowed( 'edit' ) ) {
1664                         if ( $wgUser->isAnon() ) {
1665                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1666                                 return $status;
1667                         } else {
1668                                 $status->fatal( 'readonlytext' );
1669                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1670                                 return $status;
1671                         }
1672                 }
1673
1674                 $changingContentModel = false;
1675                 if ( $this->contentModel !== $this->mTitle->getContentModel() ) {
1676                         if ( !$wgContentHandlerUseDB ) {
1677                                 $status->fatal( 'editpage-cannot-use-custom-model' );
1678                                 $status->value = self::AS_CANNOT_USE_CUSTOM_MODEL;
1679                                 return $status;
1680                         } elseif ( !$wgUser->isAllowed( 'editcontentmodel' ) ) {
1681                                 $status->setResult( false, self::AS_NO_CHANGE_CONTENT_MODEL );
1682                                 return $status;
1683
1684                         }
1685                         $changingContentModel = true;
1686                         $oldContentModel = $this->mTitle->getContentModel();
1687                 }
1688
1689                 if ( $this->changeTags ) {
1690                         $changeTagsStatus = ChangeTags::canAddTagsAccompanyingChange(
1691                                 $this->changeTags, $wgUser );
1692                         if ( !$changeTagsStatus->isOK() ) {
1693                                 $changeTagsStatus->value = self::AS_CHANGE_TAG_ERROR;
1694                                 return $changeTagsStatus;
1695                         }
1696                 }
1697
1698                 if ( wfReadOnly() ) {
1699                         $status->fatal( 'readonlytext' );
1700                         $status->value = self::AS_READ_ONLY_PAGE;
1701                         return $status;
1702                 }
1703                 if ( $wgUser->pingLimiter() || $wgUser->pingLimiter( 'linkpurge', 0 ) ) {
1704                         $status->fatal( 'actionthrottledtext' );
1705                         $status->value = self::AS_RATE_LIMITED;
1706                         return $status;
1707                 }
1708
1709                 # If the article has been deleted while editing, don't save it without
1710                 # confirmation
1711                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1712                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1713                         return $status;
1714                 }
1715
1716                 # Load the page data from the master. If anything changes in the meantime,
1717                 # we detect it by using page_latest like a token in a 1 try compare-and-swap.
1718                 $this->mArticle->loadPageData( 'fromdbmaster' );
1719                 $new = !$this->mArticle->exists();
1720
1721                 if ( $new ) {
1722                         // Late check for create permission, just in case *PARANOIA*
1723                         if ( !$this->mTitle->userCan( 'create', $wgUser ) ) {
1724                                 $status->fatal( 'nocreatetext' );
1725                                 $status->value = self::AS_NO_CREATE_PERMISSION;
1726                                 wfDebug( __METHOD__ . ": no create permission\n" );
1727                                 return $status;
1728                         }
1729
1730                         // Don't save a new page if it's blank or if it's a MediaWiki:
1731                         // message with content equivalent to default (allow empty pages
1732                         // in this case to disable messages, see bug 50124)
1733                         $defaultMessageText = $this->mTitle->getDefaultMessageText();
1734                         if ( $this->mTitle->getNamespace() === NS_MEDIAWIKI && $defaultMessageText !== false ) {
1735                                 $defaultText = $defaultMessageText;
1736                         } else {
1737                                 $defaultText = '';
1738                         }
1739
1740                         if ( !$this->allowBlankArticle && $this->textbox1 === $defaultText ) {
1741                                 $this->blankArticle = true;
1742                                 $status->fatal( 'blankarticle' );
1743                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
1744                                 return $status;
1745                         }
1746
1747                         if ( !$this->runPostMergeFilters( $textbox_content, $status, $wgUser ) ) {
1748                                 return $status;
1749                         }
1750
1751                         $content = $textbox_content;
1752
1753                         $result['sectionanchor'] = '';
1754                         if ( $this->section == 'new' ) {
1755                                 if ( $this->sectiontitle !== '' ) {
1756                                         // Insert the section title above the content.
1757                                         $content = $content->addSectionHeader( $this->sectiontitle );
1758                                 } elseif ( $this->summary !== '' ) {
1759                                         // Insert the section title above the content.
1760                                         $content = $content->addSectionHeader( $this->summary );
1761                                 }
1762                                 $this->summary = $this->newSectionSummary( $result['sectionanchor'] );
1763                         }
1764
1765                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1766
1767                 } else { # not $new
1768
1769                         # Article exists. Check for edit conflict.
1770
1771                         $this->mArticle->clear(); # Force reload of dates, etc.
1772                         $timestamp = $this->mArticle->getTimestamp();
1773
1774                         wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
1775
1776                         if ( $timestamp != $this->edittime ) {
1777                                 $this->isConflict = true;
1778                                 if ( $this->section == 'new' ) {
1779                                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1780                                                 $this->mArticle->getComment() == $this->newSectionSummary()
1781                                         ) {
1782                                                 // Probably a duplicate submission of a new comment.
1783                                                 // This can happen when squid resends a request after
1784                                                 // a timeout but the first one actually went through.
1785                                                 wfDebug( __METHOD__
1786                                                         . ": duplicate new section submission; trigger edit conflict!\n" );
1787                                         } else {
1788                                                 // New comment; suppress conflict.
1789                                                 $this->isConflict = false;
1790                                                 wfDebug( __METHOD__ . ": conflict suppressed; new section\n" );
1791                                         }
1792                                 } elseif ( $this->section == ''
1793                                         && Revision::userWasLastToEdit(
1794                                                 DB_MASTER, $this->mTitle->getArticleID(),
1795                                                 $wgUser->getId(), $this->edittime
1796                                         )
1797                                 ) {
1798                                         # Suppress edit conflict with self, except for section edits where merging is required.
1799                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1800                                         $this->isConflict = false;
1801                                 }
1802                         }
1803
1804                         // If sectiontitle is set, use it, otherwise use the summary as the section title.
1805                         if ( $this->sectiontitle !== '' ) {
1806                                 $sectionTitle = $this->sectiontitle;
1807                         } else {
1808                                 $sectionTitle = $this->summary;
1809                         }
1810
1811                         $content = null;
1812
1813                         if ( $this->isConflict ) {
1814                                 wfDebug( __METHOD__
1815                                         . ": conflict! getting section '{$this->section}' for time '{$this->edittime}'"
1816                                         . " (article time '{$timestamp}')\n" );
1817
1818                                 $content = $this->mArticle->replaceSectionContent(
1819                                         $this->section,
1820                                         $textbox_content,
1821                                         $sectionTitle,
1822                                         $this->edittime
1823                                 );
1824                         } else {
1825                                 wfDebug( __METHOD__ . ": getting section '{$this->section}'\n" );
1826                                 $content = $this->mArticle->replaceSectionContent(
1827                                         $this->section,
1828                                         $textbox_content,
1829                                         $sectionTitle
1830                                 );
1831                         }
1832
1833                         if ( is_null( $content ) ) {
1834                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1835                                 $this->isConflict = true;
1836                                 $content = $textbox_content; // do not try to merge here!
1837                         } elseif ( $this->isConflict ) {
1838                                 # Attempt merge
1839                                 if ( $this->mergeChangesIntoContent( $content ) ) {
1840                                         // Successful merge! Maybe we should tell the user the good news?
1841                                         $this->isConflict = false;
1842                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1843                                 } else {
1844                                         $this->section = '';
1845                                         $this->textbox1 = ContentHandler::getContentText( $content );
1846                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1847                                 }
1848                         }
1849
1850                         if ( $this->isConflict ) {
1851                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
1852                                 return $status;
1853                         }
1854
1855                         if ( !$this->runPostMergeFilters( $content, $status, $wgUser ) ) {
1856                                 return $status;
1857                         }
1858
1859                         if ( $this->section == 'new' ) {
1860                                 // Handle the user preference to force summaries here
1861                                 if ( !$this->allowBlankSummary && trim( $this->summary ) == '' ) {
1862                                         $this->missingSummary = true;
1863                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1864                                         $status->value = self::AS_SUMMARY_NEEDED;
1865                                         return $status;
1866                                 }
1867
1868                                 // Do not allow the user to post an empty comment
1869                                 if ( $this->textbox1 == '' ) {
1870                                         $this->missingComment = true;
1871                                         $status->fatal( 'missingcommenttext' );
1872                                         $status->value = self::AS_TEXTBOX_EMPTY;
1873                                         return $status;
1874                                 }
1875                         } elseif ( !$this->allowBlankSummary
1876                                 && !$content->equals( $this->getOriginalContent( $wgUser ) )
1877                                 && !$content->isRedirect()
1878                                 && md5( $this->summary ) == $this->autoSumm
1879                         ) {
1880                                 $this->missingSummary = true;
1881                                 $status->fatal( 'missingsummary' );
1882                                 $status->value = self::AS_SUMMARY_NEEDED;
1883                                 return $status;
1884                         }
1885
1886                         # All's well
1887                         $sectionanchor = '';
1888                         if ( $this->section == 'new' ) {
1889                                 $this->summary = $this->newSectionSummary( $sectionanchor );
1890                         } elseif ( $this->section != '' ) {
1891                                 # Try to get a section anchor from the section source, redirect
1892                                 # to edited section if header found.
1893                                 # XXX: Might be better to integrate this into Article::replaceSection
1894                                 # for duplicate heading checking and maybe parsing.
1895                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1896                                 # We can't deal with anchors, includes, html etc in the header for now,
1897                                 # headline would need to be parsed to improve this.
1898                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1899                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1900                                 }
1901                         }
1902                         $result['sectionanchor'] = $sectionanchor;
1903
1904                         // Save errors may fall down to the edit form, but we've now
1905                         // merged the section into full text. Clear the section field
1906                         // so that later submission of conflict forms won't try to
1907                         // replace that into a duplicated mess.
1908                         $this->textbox1 = $this->toEditText( $content );
1909                         $this->section = '';
1910
1911                         $status->value = self::AS_SUCCESS_UPDATE;
1912                 }
1913
1914                 if ( !$this->allowSelfRedirect
1915                         && $content->isRedirect()
1916                         && $content->getRedirectTarget()->equals( $this->getTitle() )
1917                 ) {
1918                         // If the page already redirects to itself, don't warn.
1919                         $currentTarget = $this->getCurrentContent()->getRedirectTarget();
1920                         if ( !$currentTarget || !$currentTarget->equals( $this->getTitle() ) ) {
1921                                 $this->selfRedirect = true;
1922                                 $status->fatal( 'selfredirect' );
1923                                 $status->value = self::AS_SELF_REDIRECT;
1924                                 return $status;
1925                         }
1926                 }
1927
1928                 // Check for length errors again now that the section is merged in
1929                 $this->kblength = (int)( strlen( $this->toEditText( $content ) ) / 1024 );
1930                 if ( $this->kblength > $wgMaxArticleSize ) {
1931                         $this->tooBig = true;
1932                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1933                         return $status;
1934                 }
1935
1936                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1937                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1938                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1939                         ( $bot ? EDIT_FORCE_BOT : 0 );
1940
1941                 $doEditStatus = $this->mArticle->doEditContent(
1942                         $content,
1943                         $this->summary,
1944                         $flags,
1945                         false,
1946                         null,
1947                         $content->getDefaultFormat()
1948                 );
1949
1950                 if ( !$doEditStatus->isOK() ) {
1951                         // Failure from doEdit()
1952                         // Show the edit conflict page for certain recognized errors from doEdit(),
1953                         // but don't show it for errors from extension hooks
1954                         $errors = $doEditStatus->getErrorsArray();
1955                         if ( in_array( $errors[0][0],
1956                                         array( 'edit-gone-missing', 'edit-conflict', 'edit-already-exists' ) )
1957                         ) {
1958                                 $this->isConflict = true;
1959                                 // Destroys data doEdit() put in $status->value but who cares
1960                                 $doEditStatus->value = self::AS_END;
1961                         }
1962                         return $doEditStatus;
1963                 }
1964
1965                 $result['nullEdit'] = $doEditStatus->hasMessage( 'edit-no-change' );
1966                 if ( $result['nullEdit'] ) {
1967                         // We don't know if it was a null edit until now, so increment here
1968                         $wgUser->pingLimiter( 'linkpurge' );
1969                 }
1970                 $result['redirect'] = $content->isRedirect();
1971
1972                 $this->updateWatchlist();
1973
1974                 if ( $this->changeTags && isset( $doEditStatus->value['revision'] ) ) {
1975                         // If a revision was created, apply any change tags that were requested
1976                         $addTags = $this->changeTags;
1977                         $revId = $doEditStatus->value['revision']->getId();
1978                         // Defer this both for performance and so that addTags() sees the rc_id
1979                         // since the recentchange entry addition is deferred first (bug T100248)
1980                         DeferredUpdates::addCallableUpdate( function() use ( $addTags, $revId ) {
1981                                 ChangeTags::addTags( $addTags, null, $revId );
1982                         } );
1983                 }
1984
1985                 // If the content model changed, add a log entry
1986                 if ( $changingContentModel ) {
1987                         $this->addContentModelChangeLogEntry(
1988                                 $wgUser,
1989                                 $oldContentModel,
1990                                 $this->contentModel,
1991                                 $this->summary
1992                         );
1993                 }
1994
1995                 return $status;
1996         }
1997
1998         /**
1999          * @param Title $title
2000          * @param string $oldModel
2001          * @param string $newModel
2002          * @param string $reason
2003          */
2004         protected function addContentModelChangeLogEntry( User $user, $oldModel, $newModel, $reason ) {
2005                 $log = new ManualLogEntry( 'contentmodel', 'change' );
2006                 $log->setPerformer( $user );
2007                 $log->setTarget( $this->mTitle );
2008                 $log->setComment( $reason );
2009                 $log->setParameters( array(
2010                         '4::oldmodel' => $oldModel,
2011                         '5::newmodel' => $newModel
2012                 ) );
2013                 $logid = $log->insert();
2014                 $log->publish( $logid );
2015         }
2016
2017
2018         /**
2019          * Register the change of watch status
2020          */
2021         protected function updateWatchlist() {
2022                 global $wgUser;
2023
2024                 if ( $wgUser->isLoggedIn()
2025                         && $this->watchthis != $wgUser->isWatched( $this->mTitle, WatchedItem::IGNORE_USER_RIGHTS )
2026                 ) {
2027                         $fname = __METHOD__;
2028                         $title = $this->mTitle;
2029                         $watch = $this->watchthis;
2030
2031                         // Do this in its own transaction to reduce contention...
2032                         $dbw = wfGetDB( DB_MASTER );
2033                         $dbw->onTransactionIdle( function () use ( $dbw, $title, $watch, $wgUser, $fname ) {
2034                                 WatchAction::doWatchOrUnwatch( $watch, $title, $wgUser );
2035                         } );
2036                 }
2037         }
2038
2039         /**
2040          * Attempts to do 3-way merge of edit content with a base revision
2041          * and current content, in case of edit conflict, in whichever way appropriate
2042          * for the content type.
2043          *
2044          * @since 1.21
2045          *
2046          * @param Content $editContent
2047          *
2048          * @return bool
2049          */
2050         private function mergeChangesIntoContent( &$editContent ) {
2051
2052                 $db = wfGetDB( DB_MASTER );
2053
2054                 // This is the revision the editor started from
2055                 $baseRevision = $this->getBaseRevision();
2056                 $baseContent = $baseRevision ? $baseRevision->getContent() : null;
2057
2058                 if ( is_null( $baseContent ) ) {
2059                         return false;
2060                 }
2061
2062                 // The current state, we want to merge updates into it
2063                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
2064                 $currentContent = $currentRevision ? $currentRevision->getContent() : null;
2065
2066                 if ( is_null( $currentContent ) ) {
2067                         return false;
2068                 }
2069
2070                 $handler = ContentHandler::getForModelID( $baseContent->getModel() );
2071
2072                 $result = $handler->merge3( $baseContent, $editContent, $currentContent );
2073
2074                 if ( $result ) {
2075                         $editContent = $result;
2076                         return true;
2077                 }
2078
2079                 return false;
2080         }
2081
2082         /**
2083          * @return Revision
2084          */
2085         function getBaseRevision() {
2086                 if ( !$this->mBaseRevision ) {
2087                         $db = wfGetDB( DB_MASTER );
2088                         $this->mBaseRevision = Revision::loadFromTimestamp(
2089                                 $db, $this->mTitle, $this->edittime );
2090                 }
2091                 return $this->mBaseRevision;
2092         }
2093
2094         /**
2095          * Check given input text against $wgSpamRegex, and return the text of the first match.
2096          *
2097          * @param string $text
2098          *
2099          * @return string|bool Matching string or false
2100          */
2101         public static function matchSpamRegex( $text ) {
2102                 global $wgSpamRegex;
2103                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
2104                 $regexes = (array)$wgSpamRegex;
2105                 return self::matchSpamRegexInternal( $text, $regexes );
2106         }
2107
2108         /**
2109          * Check given input text against $wgSummarySpamRegex, and return the text of the first match.
2110          *
2111          * @param string $text
2112          *
2113          * @return string|bool Matching string or false
2114          */
2115         public static function matchSummarySpamRegex( $text ) {
2116                 global $wgSummarySpamRegex;
2117                 $regexes = (array)$wgSummarySpamRegex;
2118                 return self::matchSpamRegexInternal( $text, $regexes );
2119         }
2120
2121         /**
2122          * @param string $text
2123          * @param array $regexes
2124          * @return bool|string
2125          */
2126         protected static function matchSpamRegexInternal( $text, $regexes ) {
2127                 foreach ( $regexes as $regex ) {
2128                         $matches = array();
2129                         if ( preg_match( $regex, $text, $matches ) ) {
2130                                 return $matches[0];
2131                         }
2132                 }
2133                 return false;
2134         }
2135
2136         function setHeaders() {
2137                 global $wgOut, $wgUser, $wgAjaxEditStash;
2138
2139                 $wgOut->addModules( 'mediawiki.action.edit' );
2140                 $wgOut->addModuleStyles( 'mediawiki.action.edit.styles' );
2141
2142                 if ( $wgUser->getOption( 'showtoolbar' ) ) {
2143                         // The addition of default buttons is handled by getEditToolbar() which
2144                         // has its own dependency on this module. The call here ensures the module
2145                         // is loaded in time (it has position "top") for other modules to register
2146                         // buttons (e.g. extensions, gadgets, user scripts).
2147                         $wgOut->addModules( 'mediawiki.toolbar' );
2148                 }
2149
2150                 if ( $wgUser->getOption( 'uselivepreview' ) ) {
2151                         $wgOut->addModules( 'mediawiki.action.edit.preview' );
2152                 }
2153
2154                 if ( $wgUser->getOption( 'useeditwarning' ) ) {
2155                         $wgOut->addModules( 'mediawiki.action.edit.editWarning' );
2156                 }
2157
2158                 if ( $wgAjaxEditStash ) {
2159                         $wgOut->addModules( 'mediawiki.action.edit.stash' );
2160                 }
2161
2162                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
2163
2164                 # Enabled article-related sidebar, toplinks, etc.
2165                 $wgOut->setArticleRelated( true );
2166
2167                 $contextTitle = $this->getContextTitle();
2168                 if ( $this->isConflict ) {
2169                         $msg = 'editconflict';
2170                 } elseif ( $contextTitle->exists() && $this->section != '' ) {
2171                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
2172                 } else {
2173                         $msg = $contextTitle->exists()
2174                                 || ( $contextTitle->getNamespace() == NS_MEDIAWIKI
2175                                         && $contextTitle->getDefaultMessageText() !== false
2176                                 )
2177                                 ? 'editing'
2178                                 : 'creating';
2179                 }
2180
2181                 # Use the title defined by DISPLAYTITLE magic word when present
2182                 $displayTitle = isset( $this->mParserOutput ) ? $this->mParserOutput->getDisplayTitle() : false;
2183                 if ( $displayTitle === false ) {
2184                         $displayTitle = $contextTitle->getPrefixedText();
2185                 }
2186                 $wgOut->setPageTitle( wfMessage( $msg, $displayTitle ) );
2187                 # Transmit the name of the message to JavaScript for live preview
2188                 # Keep Resources.php/mediawiki.action.edit.preview in sync with the possible keys
2189                 $wgOut->addJsConfigVars( 'wgEditMessage', $msg );
2190         }
2191
2192         /**
2193          * Show all applicable editing introductions
2194          */
2195         protected function showIntro() {
2196                 global $wgOut, $wgUser;
2197                 if ( $this->suppressIntro ) {
2198                         return;
2199                 }
2200
2201                 $namespace = $this->mTitle->getNamespace();
2202
2203                 if ( $namespace == NS_MEDIAWIKI ) {
2204                         # Show a warning if editing an interface message
2205                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
2206                         # If this is a default message (but not css or js),
2207                         # show a hint that it is translatable on translatewiki.net
2208                         if ( !$this->mTitle->hasContentModel( CONTENT_MODEL_CSS )
2209                                 && !$this->mTitle->hasContentModel( CONTENT_MODEL_JAVASCRIPT )
2210                         ) {
2211                                 $defaultMessageText = $this->mTitle->getDefaultMessageText();
2212                                 if ( $defaultMessageText !== false ) {
2213                                         $wgOut->wrapWikiMsg( "<div class='mw-translateinterface'>\n$1\n</div>",
2214                                                 'translateinterface' );
2215                                 }
2216                         }
2217                 } elseif ( $namespace == NS_FILE ) {
2218                         # Show a hint to shared repo
2219                         $file = wfFindFile( $this->mTitle );
2220                         if ( $file && !$file->isLocal() ) {
2221                                 $descUrl = $file->getDescriptionUrl();
2222                                 # there must be a description url to show a hint to shared repo
2223                                 if ( $descUrl ) {
2224                                         if ( !$this->mTitle->exists() ) {
2225                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-create\">\n$1\n</div>", array(
2226                                                                         'sharedupload-desc-create', $file->getRepo()->getDisplayName(), $descUrl
2227                                                 ) );
2228                                         } else {
2229                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-edit\">\n$1\n</div>", array(
2230                                                                         'sharedupload-desc-edit', $file->getRepo()->getDisplayName(), $descUrl
2231                                                 ) );
2232                                         }
2233                                 }
2234                         }
2235                 }
2236
2237                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
2238                 # Show log extract when the user is currently blocked
2239                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
2240                         $parts = explode( '/', $this->mTitle->getText(), 2 );
2241                         $username = $parts[0];
2242                         $user = User::newFromName( $username, false /* allow IP users*/ );
2243                         $ip = User::isIP( $username );
2244                         $block = Block::newFromTarget( $user, $user );
2245                         if ( !( $user && $user->isLoggedIn() ) && !$ip ) { # User does not exist
2246                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
2247                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
2248                         } elseif ( !is_null( $block ) && $block->getType() != Block::TYPE_AUTO ) {
2249                                 # Show log extract if the user is currently blocked
2250                                 LogEventsList::showLogExtract(
2251                                         $wgOut,
2252                                         'block',
2253                                         MWNamespace::getCanonicalName( NS_USER ) . ':' . $block->getTarget(),
2254                                         '',
2255                                         array(
2256                                                 'lim' => 1,
2257                                                 'showIfEmpty' => false,
2258                                                 'msgKey' => array(
2259                                                         'blocked-notice-logextract',
2260                                                         $user->getName() # Support GENDER in notice
2261                                                 )
2262                                         )
2263                                 );
2264                         }
2265                 }
2266                 # Try to add a custom edit intro, or use the standard one if this is not possible.
2267                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
2268                         $helpLink = wfExpandUrl( Skin::makeInternalOrExternalUrl(
2269                                 wfMessage( 'helppage' )->inContentLanguage()->text()
2270                         ) );
2271                         if ( $wgUser->isLoggedIn() ) {
2272                                 $wgOut->wrapWikiMsg(
2273                                         // Suppress the external link icon, consider the help url an internal one
2274                                         "<div class=\"mw-newarticletext plainlinks\">\n$1\n</div>",
2275                                         array(
2276                                                 'newarticletext',
2277                                                 $helpLink
2278                                         )
2279                                 );
2280                         } else {
2281                                 $wgOut->wrapWikiMsg(
2282                                         // Suppress the external link icon, consider the help url an internal one
2283                                         "<div class=\"mw-newarticletextanon plainlinks\">\n$1\n</div>",
2284                                         array(
2285                                                 'newarticletextanon',
2286                                                 $helpLink
2287                                         )
2288                                 );
2289                         }
2290                 }
2291                 # Give a notice if the user is editing a deleted/moved page...
2292                 if ( !$this->mTitle->exists() ) {
2293                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle,
2294                                 '',
2295                                 array(
2296                                         'lim' => 10,
2297                                         'conds' => array( "log_action != 'revision'" ),
2298                                         'showIfEmpty' => false,
2299                                         'msgKey' => array( 'recreate-moveddeleted-warn' )
2300                                 )
2301                         );
2302                 }
2303         }
2304
2305         /**
2306          * Attempt to show a custom editing introduction, if supplied
2307          *
2308          * @return bool
2309          */
2310         protected function showCustomIntro() {
2311                 if ( $this->editintro ) {
2312                         $title = Title::newFromText( $this->editintro );
2313                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
2314                                 global $wgOut;
2315                                 // Added using template syntax, to take <noinclude>'s into account.
2316                                 $wgOut->addWikiTextTitleTidy(
2317                                         '<div class="mw-editintro">{{:' . $title->getFullText() . '}}</div>',
2318                                         $this->mTitle
2319                                 );
2320                                 return true;
2321                         }
2322                 }
2323                 return false;
2324         }
2325
2326         /**
2327          * Gets an editable textual representation of $content.
2328          * The textual representation can be turned by into a Content object by the
2329          * toEditContent() method.
2330          *
2331          * If $content is null or false or a string, $content is returned unchanged.
2332          *
2333          * If the given Content object is not of a type that can be edited using
2334          * the text base EditPage, an exception will be raised. Set
2335          * $this->allowNonTextContent to true to allow editing of non-textual
2336          * content.
2337          *
2338          * @param Content|null|bool|string $content
2339          * @return string The editable text form of the content.
2340          *
2341          * @throws MWException If $content is not an instance of TextContent and
2342          *   $this->allowNonTextContent is not true.
2343          */
2344         protected function toEditText( $content ) {
2345                 if ( $content === null || $content === false || is_string( $content ) ) {
2346                         return $content;
2347                 }
2348
2349                 if ( !$this->isSupportedContentModel( $content->getModel() ) ) {
2350                         throw new MWException( 'This content model is not supported: '
2351                                 . ContentHandler::getLocalizedName( $content->getModel() ) );
2352                 }
2353
2354                 return $content->serialize( $this->contentFormat );
2355         }
2356
2357         /**
2358          * Turns the given text into a Content object by unserializing it.
2359          *
2360          * If the resulting Content object is not of a type that can be edited using
2361          * the text base EditPage, an exception will be raised. Set
2362          * $this->allowNonTextContent to true to allow editing of non-textual
2363          * content.
2364          *
2365          * @param string|null|bool $text Text to unserialize
2366          * @return Content The content object created from $text. If $text was false
2367          *   or null, false resp. null will be  returned instead.
2368          *
2369          * @throws MWException If unserializing the text results in a Content
2370          *   object that is not an instance of TextContent and
2371          *   $this->allowNonTextContent is not true.
2372          */
2373         protected function toEditContent( $text ) {
2374                 if ( $text === false || $text === null ) {
2375                         return $text;
2376                 }
2377
2378                 $content = ContentHandler::makeContent( $text, $this->getTitle(),
2379                         $this->contentModel, $this->contentFormat );
2380
2381                 if ( !$this->isSupportedContentModel( $content->getModel() ) ) {
2382                         throw new MWException( 'This content model is not supported: '
2383                                 . ContentHandler::getLocalizedName( $content->getModel() ) );
2384                 }
2385
2386                 return $content;
2387         }
2388
2389         /**
2390          * Send the edit form and related headers to $wgOut
2391          * @param callable|null $formCallback That takes an OutputPage parameter; will be called
2392          *     during form output near the top, for captchas and the like.
2393          *
2394          * The $formCallback parameter is deprecated since MediaWiki 1.25. Please
2395          * use the EditPage::showEditForm:fields hook instead.
2396          */
2397         function showEditForm( $formCallback = null ) {
2398                 global $wgOut, $wgUser;
2399
2400                 # need to parse the preview early so that we know which templates are used,
2401                 # otherwise users with "show preview after edit box" will get a blank list
2402                 # we parse this near the beginning so that setHeaders can do the title
2403                 # setting work instead of leaving it in getPreviewText
2404                 $previewOutput = '';
2405                 if ( $this->formtype == 'preview' ) {
2406                         $previewOutput = $this->getPreviewText();
2407                 }
2408
2409                 Hooks::run( 'EditPage::showEditForm:initial', array( &$this, &$wgOut ) );
2410
2411                 $this->setHeaders();
2412
2413                 if ( $this->showHeader() === false ) {
2414                         return;
2415                 }
2416
2417                 $wgOut->addHTML( $this->editFormPageTop );
2418
2419                 if ( $wgUser->getOption( 'previewontop' ) ) {
2420                         $this->displayPreviewArea( $previewOutput, true );
2421                 }
2422
2423                 $wgOut->addHTML( $this->editFormTextTop );
2424
2425                 $showToolbar = true;
2426                 if ( $this->wasDeletedSinceLastEdit() ) {
2427                         if ( $this->formtype == 'save' ) {
2428                                 // Hide the toolbar and edit area, user can click preview to get it back
2429                                 // Add an confirmation checkbox and explanation.
2430                                 $showToolbar = false;
2431                         } else {
2432                                 $wgOut->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
2433                                         'deletedwhileediting' );
2434                         }
2435                 }
2436
2437                 // @todo add EditForm plugin interface and use it here!
2438                 //       search for textarea1 and textares2, and allow EditForm to override all uses.
2439                 $wgOut->addHTML( Html::openElement(
2440                         'form',
2441                         array(
2442                                 'id' => self::EDITFORM_ID,
2443                                 'name' => self::EDITFORM_ID,
2444                                 'method' => 'post',
2445                                 'action' => $this->getActionURL( $this->getContextTitle() ),
2446                                 'enctype' => 'multipart/form-data'
2447                         )
2448                 ) );
2449
2450                 if ( is_callable( $formCallback ) ) {
2451                         wfWarn( 'The $formCallback parameter to ' . __METHOD__ . 'is deprecated' );
2452                         call_user_func_array( $formCallback, array( &$wgOut ) );
2453                 }
2454
2455                 // Add an empty field to trip up spambots
2456                 $wgOut->addHTML(
2457                         Xml::openElement( 'div', array( 'id' => 'antispam-container', 'style' => 'display: none;' ) )
2458                         . Html::rawElement(
2459                                 'label',
2460                                 array( 'for' => 'wpAntiSpam' ),
2461                                 wfMessage( 'simpleantispam-label' )->parse()
2462                         )
2463                         . Xml::element(
2464                                 'input',
2465                                 array(
2466                                         'type' => 'text',
2467                                         'name' => 'wpAntispam',
2468                                         'id' => 'wpAntispam',
2469                                         'value' => ''
2470                                 )
2471                         )
2472                         . Xml::closeElement( 'div' )
2473                 );
2474
2475                 Hooks::run( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
2476
2477                 // Put these up at the top to ensure they aren't lost on early form submission
2478                 $this->showFormBeforeText();
2479
2480                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
2481                         $username = $this->lastDelete->user_name;
2482                         $comment = $this->lastDelete->log_comment;
2483
2484                         // It is better to not parse the comment at all than to have templates expanded in the middle
2485                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
2486                         $key = $comment === ''
2487                                 ? 'confirmrecreate-noreason'
2488                                 : 'confirmrecreate';
2489                         $wgOut->addHTML(
2490                                 '<div class="mw-confirm-recreate">' .
2491                                         wfMessage( $key, $username, "<nowiki>$comment</nowiki>" )->parse() .
2492                                 Xml::checkLabel( wfMessage( 'recreate' )->text(), 'wpRecreate', 'wpRecreate', false,
2493                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
2494                                 ) .
2495                                 '</div>'
2496                         );
2497                 }
2498
2499                 # When the summary is hidden, also hide them on preview/show changes
2500                 if ( $this->nosummary ) {
2501                         $wgOut->addHTML( Html::hidden( 'nosummary', true ) );
2502                 }
2503
2504                 # If a blank edit summary was previously provided, and the appropriate
2505                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
2506                 # user being bounced back more than once in the event that a summary
2507                 # is not required.
2508                 #####
2509                 # For a bit more sophisticated detection of blank summaries, hash the
2510                 # automatic one and pass that in the hidden field wpAutoSummary.
2511                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
2512                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
2513                 }
2514
2515                 if ( $this->undidRev ) {
2516                         $wgOut->addHTML( Html::hidden( 'wpUndidRevision', $this->undidRev ) );
2517                 }
2518
2519                 if ( $this->selfRedirect ) {
2520                         $wgOut->addHTML( Html::hidden( 'wpIgnoreSelfRedirect', true ) );
2521                 }
2522
2523                 if ( $this->hasPresetSummary ) {
2524                         // If a summary has been preset using &summary= we don't want to prompt for
2525                         // a different summary. Only prompt for a summary if the summary is blanked.
2526                         // (Bug 17416)
2527                         $this->autoSumm = md5( '' );
2528                 }
2529
2530                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
2531                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
2532
2533                 $wgOut->addHTML( Html::hidden( 'oldid', $this->oldid ) );
2534                 $wgOut->addHTML( Html::hidden( 'parentRevId',
2535                         $this->parentRevId ?: $this->mArticle->getRevIdFetched() ) );
2536
2537                 $wgOut->addHTML( Html::hidden( 'format', $this->contentFormat ) );
2538                 $wgOut->addHTML( Html::hidden( 'model', $this->contentModel ) );
2539
2540                 if ( $this->section == 'new' ) {
2541                         $this->showSummaryInput( true, $this->summary );
2542                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
2543                 }
2544
2545                 $wgOut->addHTML( $this->editFormTextBeforeContent );
2546
2547                 if ( !$this->isCssJsSubpage && $showToolbar && $wgUser->getOption( 'showtoolbar' ) ) {
2548                         $wgOut->addHTML( EditPage::getEditToolbar() );
2549                 }
2550
2551                 if ( $this->blankArticle ) {
2552                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankArticle', true ) );
2553                 }
2554
2555                 if ( $this->isConflict ) {
2556                         // In an edit conflict bypass the overridable content form method
2557                         // and fallback to the raw wpTextbox1 since editconflicts can't be
2558                         // resolved between page source edits and custom ui edits using the
2559                         // custom edit ui.
2560                         $this->textbox2 = $this->textbox1;
2561
2562                         $content = $this->getCurrentContent();
2563                         $this->textbox1 = $this->toEditText( $content );
2564
2565                         $this->showTextbox1();
2566                 } else {
2567                         $this->showContentForm();
2568                 }
2569
2570                 $wgOut->addHTML( $this->editFormTextAfterContent );
2571
2572                 $this->showStandardInputs();
2573
2574                 $this->showFormAfterText();
2575
2576                 $this->showTosSummary();
2577
2578                 $this->showEditTools();
2579
2580                 $wgOut->addHTML( $this->editFormTextAfterTools . "\n" );
2581
2582                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
2583                         Linker::formatTemplates( $this->getTemplates(), $this->preview, $this->section != '' ) ) );
2584
2585                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'hiddencats' ),
2586                         Linker::formatHiddenCategories( $this->mArticle->getHiddenCategories() ) ) );
2587
2588                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'limitreport' ),
2589                         self::getPreviewLimitReport( $this->mParserOutput ) ) );
2590
2591                 $wgOut->addModules( 'mediawiki.action.edit.collapsibleFooter' );
2592
2593                 if ( $this->isConflict ) {
2594                         try {
2595                                 $this->showConflict();
2596                         } catch ( MWContentSerializationException $ex ) {
2597                                 // this can't really happen, but be nice if it does.
2598                                 $msg = wfMessage(
2599                                         'content-failed-to-parse',
2600                                         $this->contentModel,
2601                                         $this->contentFormat,
2602                                         $ex->getMessage()
2603                                 );
2604                                 $wgOut->addWikiText( '<div class="error">' . $msg->text() . '</div>' );
2605                         }
2606                 }
2607
2608                 // Marker for detecting truncated form data.  This must be the last
2609                 // parameter sent in order to be of use, so do not move me.
2610                 $wgOut->addHTML( Html::hidden( 'wpUltimateParam', true ) );
2611                 $wgOut->addHTML( $this->editFormTextBottom . "\n</form>\n" );
2612
2613                 if ( !$wgUser->getOption( 'previewontop' ) ) {
2614                         $this->displayPreviewArea( $previewOutput, false );
2615                 }
2616
2617         }
2618
2619         /**
2620          * Extract the section title from current section text, if any.
2621          *
2622          * @param string $text
2623          * @return string|bool String or false
2624          */
2625         public static function extractSectionTitle( $text ) {
2626                 preg_match( "/^(=+)(.+)\\1\\s*(\n|$)/i", $text, $matches );
2627                 if ( !empty( $matches[2] ) ) {
2628                         global $wgParser;
2629                         return $wgParser->stripSectionName( trim( $matches[2] ) );
2630                 } else {
2631                         return false;
2632                 }
2633         }
2634
2635         /**
2636          * @return bool
2637          */
2638         protected function showHeader() {
2639                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
2640                 global $wgAllowUserCss, $wgAllowUserJs;
2641
2642                 if ( $this->mTitle->isTalkPage() ) {
2643                         $wgOut->addWikiMsg( 'talkpagetext' );
2644                 }
2645
2646                 // Add edit notices
2647                 $editNotices = $this->mTitle->getEditNotices( $this->oldid );
2648                 if ( count( $editNotices ) ) {
2649                         $wgOut->addHTML( implode( "\n", $editNotices ) );
2650                 } else {
2651                         $msg = wfMessage( 'editnotice-notext' );
2652                         if ( !$msg->isDisabled() ) {
2653                                 $wgOut->addHTML(
2654                                         '<div class="mw-editnotice-notext">'
2655                                         . $msg->parseAsBlock()
2656                                         . '</div>'
2657                                 );
2658                         }
2659                 }
2660
2661                 if ( $this->isConflict ) {
2662                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
2663                         $this->edittime = $this->mArticle->getTimestamp();
2664                 } else {
2665                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
2666                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
2667                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
2668                                 // Someone is welcome to try refactoring though
2669                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
2670                                 return false;
2671                         }
2672
2673                         if ( $this->section != '' && $this->section != 'new' ) {
2674                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
2675                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 ); //FIXME: use Content object
2676                                         if ( $sectionTitle !== false ) {
2677                                                 $this->summary = "/* $sectionTitle */ ";
2678                                         }
2679                                 }
2680                         }
2681
2682                         if ( $this->missingComment ) {
2683                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
2684                         }
2685
2686                         if ( $this->missingSummary && $this->section != 'new' ) {
2687                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
2688                         }
2689
2690                         if ( $this->missingSummary && $this->section == 'new' ) {
2691                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
2692                         }
2693
2694                         if ( $this->blankArticle ) {
2695                                 $wgOut->wrapWikiMsg( "<div id='mw-blankarticle'>\n$1\n</div>", 'blankarticle' );
2696                         }
2697
2698                         if ( $this->selfRedirect ) {
2699                                 $wgOut->wrapWikiMsg( "<div id='mw-selfredirect'>\n$1\n</div>", 'selfredirect' );
2700                         }
2701
2702                         if ( $this->hookError !== '' ) {
2703                                 $wgOut->addWikiText( $this->hookError );
2704                         }
2705
2706                         if ( !$this->checkUnicodeCompliantBrowser() ) {
2707                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
2708                         }
2709
2710                         if ( $this->section != 'new' ) {
2711                                 $revision = $this->mArticle->getRevisionFetched();
2712                                 if ( $revision ) {
2713                                         // Let sysop know that this will make private content public if saved
2714
2715                                         if ( !$revision->userCan( Revision::DELETED_TEXT, $wgUser ) ) {
2716                                                 $wgOut->wrapWikiMsg(
2717                                                         "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
2718                                                         'rev-deleted-text-permission'
2719                                                 );
2720                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
2721                                                 $wgOut->wrapWikiMsg(
2722                                                         "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
2723                                                         'rev-deleted-text-view'
2724                                                 );
2725                                         }
2726
2727                                         if ( !$revision->isCurrent() ) {
2728                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
2729                                                 $wgOut->addWikiMsg( 'editingold' );
2730                                         }
2731                                 } elseif ( $this->mTitle->exists() ) {
2732                                         // Something went wrong
2733
2734                                         $wgOut->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
2735                                                 array( 'missing-revision', $this->oldid ) );
2736                                 }
2737                         }
2738                 }
2739
2740                 if ( wfReadOnly() ) {
2741                         $wgOut->wrapWikiMsg(
2742                                 "<div id=\"mw-read-only-warning\">\n$1\n</div>",
2743                                 array( 'readonlywarning', wfReadOnlyReason() )
2744                         );
2745                 } elseif ( $wgUser->isAnon() ) {
2746                         if ( $this->formtype != 'preview' ) {
2747                                 $wgOut->wrapWikiMsg(
2748                                         "<div id='mw-anon-edit-warning'>\n$1\n</div>",
2749                                         array( 'anoneditwarning',
2750                                                 // Log-in link
2751                                                 '{{fullurl:Special:UserLogin|returnto={{FULLPAGENAMEE}}}}',
2752                                                 // Sign-up link
2753                                                 '{{fullurl:Special:UserLogin/signup|returnto={{FULLPAGENAMEE}}}}' )
2754                                 );
2755                         } else {
2756                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>",
2757                                         'anonpreviewwarning'
2758                                 );
2759                         }
2760                 } else {
2761                         if ( $this->isCssJsSubpage ) {
2762                                 # Check the skin exists
2763                                 if ( $this->isWrongCaseCssJsPage ) {
2764                                         $wgOut->wrapWikiMsg(
2765                                                 "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>",
2766                                                 array( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() )
2767                                         );
2768                                 }
2769                                 if ( $this->getTitle()->isSubpageOf( $wgUser->getUserPage() ) ) {
2770                                         if ( $this->formtype !== 'preview' ) {
2771                                                 if ( $this->isCssSubpage && $wgAllowUserCss ) {
2772                                                         $wgOut->wrapWikiMsg(
2773                                                                 "<div id='mw-usercssyoucanpreview'>\n$1\n</div>",
2774                                                                 array( 'usercssyoucanpreview' )
2775                                                         );
2776                                                 }
2777
2778                                                 if ( $this->isJsSubpage && $wgAllowUserJs ) {
2779                                                         $wgOut->wrapWikiMsg(
2780                                                                 "<div id='mw-userjsyoucanpreview'>\n$1\n</div>",
2781                                                                 array( 'userjsyoucanpreview' )
2782                                                         );
2783                                                 }
2784                                         }
2785                                 }
2786                         }
2787                 }
2788
2789                 if ( $this->mTitle->isProtected( 'edit' ) &&
2790                         MWNamespace::getRestrictionLevels( $this->mTitle->getNamespace() ) !== array( '' )
2791                 ) {
2792                         # Is the title semi-protected?
2793                         if ( $this->mTitle->isSemiProtected() ) {
2794                                 $noticeMsg = 'semiprotectedpagewarning';
2795                         } else {
2796                                 # Then it must be protected based on static groups (regular)
2797                                 $noticeMsg = 'protectedpagewarning';
2798                         }
2799                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2800                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
2801                 }
2802                 if ( $this->mTitle->isCascadeProtected() ) {
2803                         # Is this page under cascading protection from some source pages?
2804                         list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
2805                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
2806                         $cascadeSourcesCount = count( $cascadeSources );
2807                         if ( $cascadeSourcesCount > 0 ) {
2808                                 # Explain, and list the titles responsible
2809                                 foreach ( $cascadeSources as $page ) {
2810                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
2811                                 }
2812                         }
2813                         $notice .= '</div>';
2814                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
2815                 }
2816                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
2817                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2818                                 array( 'lim' => 1,
2819                                         'showIfEmpty' => false,
2820                                         'msgKey' => array( 'titleprotectedwarning' ),
2821                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
2822                 }
2823
2824                 if ( $this->kblength === false ) {
2825                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
2826                 }
2827
2828                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
2829                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
2830                                 array(
2831                                         'longpageerror',
2832                                         $wgLang->formatNum( $this->kblength ),
2833                                         $wgLang->formatNum( $wgMaxArticleSize )
2834                                 )
2835                         );
2836                 } else {
2837                         if ( !wfMessage( 'longpage-hint' )->isDisabled() ) {
2838                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
2839                                         array(
2840                                                 'longpage-hint',
2841                                                 $wgLang->formatSize( strlen( $this->textbox1 ) ),
2842                                                 strlen( $this->textbox1 )
2843                                         )
2844                                 );
2845                         }
2846                 }
2847                 # Add header copyright warning
2848                 $this->showHeaderCopyrightWarning();
2849
2850                 return true;
2851         }
2852
2853         /**
2854          * Standard summary input and label (wgSummary), abstracted so EditPage
2855          * subclasses may reorganize the form.
2856          * Note that you do not need to worry about the label's for=, it will be
2857          * inferred by the id given to the input. You can remove them both by
2858          * passing array( 'id' => false ) to $userInputAttrs.
2859          *
2860          * @param string $summary The value of the summary input
2861          * @param string $labelText The html to place inside the label
2862          * @param array $inputAttrs Array of attrs to use on the input
2863          * @param array $spanLabelAttrs Array of attrs to use on the span inside the label
2864          *
2865          * @return array An array in the format array( $label, $input )
2866          */
2867         function getSummaryInput( $summary = "", $labelText = null,
2868                 $inputAttrs = null, $spanLabelAttrs = null
2869         ) {
2870                 // Note: the maxlength is overridden in JS to 255 and to make it use UTF-8 bytes, not characters.
2871                 $inputAttrs = ( is_array( $inputAttrs ) ? $inputAttrs : array() ) + array(
2872                         'id' => 'wpSummary',
2873                         'maxlength' => '200',
2874                         'tabindex' => '1',
2875                         'size' => 60,
2876                         'spellcheck' => 'true',
2877                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
2878
2879                 $spanLabelAttrs = ( is_array( $spanLabelAttrs ) ? $spanLabelAttrs : array() ) + array(
2880                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
2881                         'id' => "wpSummaryLabel"
2882                 );
2883
2884                 $label = null;
2885                 if ( $labelText ) {
2886                         $label = Xml::tags(
2887                                 'label',
2888                                 $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null,
2889                                 $labelText
2890                         );
2891                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
2892                 }
2893
2894                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
2895
2896                 return array( $label, $input );
2897         }
2898
2899         /**
2900          * @param bool $isSubjectPreview True if this is the section subject/title
2901          *   up top, or false if this is the comment summary
2902          *   down below the textarea
2903          * @param string $summary The text of the summary to display
2904          */
2905         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
2906                 global $wgOut, $wgContLang;
2907                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
2908                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
2909                 if ( $isSubjectPreview ) {
2910                         if ( $this->nosummary ) {
2911                                 return;
2912                         }
2913                 } else {
2914                         if ( !$this->mShowSummaryField ) {
2915                                 return;
2916                         }
2917                 }
2918                 $summary = $wgContLang->recodeForEdit( $summary );
2919                 $labelText = wfMessage( $isSubjectPreview ? 'subject' : 'summary' )->parse();
2920                 list( $label, $input ) = $this->getSummaryInput(
2921                         $summary,
2922                         $labelText,
2923                         array( 'class' => $summaryClass ),
2924                         array()
2925                 );
2926                 $wgOut->addHTML( "{$label} {$input}" );
2927         }
2928
2929         /**
2930          * @param bool $isSubjectPreview True if this is the section subject/title
2931          *   up top, or false if this is the comment summary
2932          *   down below the textarea
2933          * @param string $summary The text of the summary to display
2934          * @return string
2935          */
2936         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
2937                 // avoid spaces in preview, gets always trimmed on save
2938                 $summary = trim( $summary );
2939                 if ( !$summary || ( !$this->preview && !$this->diff ) ) {
2940                         return "";
2941                 }
2942
2943                 global $wgParser;
2944
2945                 if ( $isSubjectPreview ) {
2946                         $summary = wfMessage( 'newsectionsummary' )->rawParams( $wgParser->stripSectionName( $summary ) )
2947                                 ->inContentLanguage()->text();
2948                 }
2949
2950                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
2951
2952                 $summary = wfMessage( $message )->parse()
2953                         . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
2954                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
2955         }
2956
2957         protected function showFormBeforeText() {
2958                 global $wgOut;
2959                 $section = htmlspecialchars( $this->section );
2960                 $wgOut->addHTML( <<<HTML
2961 <input type='hidden' value="{$section}" name="wpSection"/>
2962 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
2963 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
2964 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
2965
2966 HTML
2967                 );
2968                 if ( !$this->checkUnicodeCompliantBrowser() ) {
2969                         $wgOut->addHTML( Html::hidden( 'safemode', '1' ) );
2970                 }
2971         }
2972
2973         protected function showFormAfterText() {
2974                 global $wgOut, $wgUser;
2975                 /**
2976                  * To make it harder for someone to slip a user a page
2977                  * which submits an edit form to the wiki without their
2978                  * knowledge, a random token is associated with the login
2979                  * session. If it's not passed back with the submission,
2980                  * we won't save the page, or render user JavaScript and
2981                  * CSS previews.
2982                  *
2983                  * For anon editors, who may not have a session, we just
2984                  * include the constant suffix to prevent editing from
2985                  * broken text-mangling proxies.
2986                  */
2987                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->getEditToken() ) . "\n" );
2988         }
2989
2990         /**
2991          * Subpage overridable method for printing the form for page content editing
2992          * By default this simply outputs wpTextbox1
2993          * Subclasses can override this to provide a custom UI for editing;
2994          * be it a form, or simply wpTextbox1 with a modified content that will be
2995          * reverse modified when extracted from the post data.
2996          * Note that this is basically the inverse for importContentFormData
2997          */
2998         protected function showContentForm() {
2999                 $this->showTextbox1();
3000         }
3001
3002         /**
3003          * Method to output wpTextbox1
3004          * The $textoverride method can be used by subclasses overriding showContentForm
3005          * to pass back to this method.
3006          *
3007          * @param array $customAttribs Array of html attributes to use in the textarea
3008          * @param string $textoverride Optional text to override $this->textarea1 with
3009          */
3010         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
3011                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
3012                         $attribs = array( 'style' => 'display:none;' );
3013                 } else {
3014                         $classes = array(); // Textarea CSS
3015                         if ( $this->mTitle->isProtected( 'edit' ) &&
3016                                 MWNamespace::getRestrictionLevels( $this->mTitle->getNamespace() ) !== array( '' )
3017                         ) {
3018                                 # Is the title semi-protected?
3019                                 if ( $this->mTitle->isSemiProtected() ) {
3020                                         $classes[] = 'mw-textarea-sprotected';
3021                                 } else {
3022                                         # Then it must be protected based on static groups (regular)
3023                                         $classes[] = 'mw-textarea-protected';
3024                                 }
3025                                 # Is the title cascade-protected?
3026                                 if ( $this->mTitle->isCascadeProtected() ) {
3027                                         $classes[] = 'mw-textarea-cprotected';
3028                                 }
3029                         }
3030
3031                         $attribs = array( 'tabindex' => 1 );
3032
3033                         if ( is_array( $customAttribs ) ) {
3034                                 $attribs += $customAttribs;
3035                         }
3036
3037                         if ( count( $classes ) ) {
3038                                 if ( isset( $attribs['class'] ) ) {
3039                                         $classes[] = $attribs['class'];
3040                                 }
3041                                 $attribs['class'] = implode( ' ', $classes );
3042                         }
3043                 }
3044
3045                 $this->showTextbox(
3046                         $textoverride !== null ? $textoverride : $this->textbox1,
3047                         'wpTextbox1',
3048                         $attribs
3049                 );
3050         }
3051
3052         protected function showTextbox2() {
3053                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
3054         }
3055
3056         protected function showTextbox( $text, $name, $customAttribs = array() ) {
3057                 global $wgOut, $wgUser;
3058
3059                 $wikitext = $this->safeUnicodeOutput( $text );
3060                 if ( strval( $wikitext ) !== '' ) {
3061                         // Ensure there's a newline at the end, otherwise adding lines
3062                         // is awkward.
3063                         // But don't add a newline if the ext is empty, or Firefox in XHTML
3064                         // mode will show an extra newline. A bit annoying.
3065                         $wikitext .= "\n";
3066                 }
3067
3068                 $attribs = $customAttribs + array(
3069                         'accesskey' => ',',
3070                         'id' => $name,
3071                         'cols' => $wgUser->getIntOption( 'cols' ),
3072                         'rows' => $wgUser->getIntOption( 'rows' ),
3073                         // Avoid PHP notices when appending preferences
3074                         // (appending allows customAttribs['style'] to still work).
3075                         'style' => ''
3076                 );
3077
3078                 $pageLang = $this->mTitle->getPageLanguage();
3079                 $attribs['lang'] = $pageLang->getHtmlCode();
3080                 $attribs['dir'] = $pageLang->getDir();
3081
3082                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
3083         }
3084
3085         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
3086                 global $wgOut;
3087                 $classes = array();
3088                 if ( $isOnTop ) {
3089                         $classes[] = 'ontop';
3090                 }
3091
3092                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
3093
3094                 if ( $this->formtype != 'preview' ) {
3095                         $attribs['style'] = 'display: none;';
3096                 }
3097
3098                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
3099
3100                 if ( $this->formtype == 'preview' ) {
3101                         $this->showPreview( $previewOutput );
3102                 } else {
3103                         // Empty content container for LivePreview
3104                         $pageViewLang = $this->mTitle->getPageViewLanguage();
3105                         $attribs = array( 'lang' => $pageViewLang->getHtmlCode(), 'dir' => $pageViewLang->getDir(),
3106                                 'class' => 'mw-content-' . $pageViewLang->getDir() );
3107                         $wgOut->addHTML( Html::rawElement( 'div', $attribs ) );
3108                 }
3109
3110                 $wgOut->addHTML( '</div>' );
3111
3112                 if ( $this->formtype == 'diff' ) {
3113                         try {
3114                                 $this->showDiff();
3115                         } catch ( MWContentSerializationException $ex ) {
3116                                 $msg = wfMessage(
3117                                         'content-failed-to-parse',
3118                                         $this->contentModel,
3119                                         $this->contentFormat,
3120                                         $ex->getMessage()
3121                                 );
3122                                 $wgOut->addWikiText( '<div class="error">' . $msg->text() . '</div>' );
3123                         }
3124                 }
3125         }
3126
3127         /**
3128          * Append preview output to $wgOut.
3129          * Includes category rendering if this is a category page.
3130          *
3131          * @param string $text The HTML to be output for the preview.
3132          */
3133         protected function showPreview( $text ) {
3134                 global $wgOut;
3135                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
3136                         $this->mArticle->openShowCategory();
3137                 }
3138                 # This hook seems slightly odd here, but makes things more
3139                 # consistent for extensions.
3140                 Hooks::run( 'OutputPageBeforeHTML', array( &$wgOut, &$text ) );
3141                 $wgOut->addHTML( $text );
3142                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
3143                         $this->mArticle->closeShowCategory();
3144                 }
3145         }
3146
3147         /**
3148          * Get a diff between the current contents of the edit box and the
3149          * version of the page we're editing from.
3150          *
3151          * If this is a section edit, we'll replace the section as for final
3152          * save and then make a comparison.
3153          */
3154         function showDiff() {
3155                 global $wgUser, $wgContLang, $wgOut;
3156
3157                 $oldtitlemsg = 'currentrev';
3158                 # if message does not exist, show diff against the preloaded default
3159                 if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && !$this->mTitle->exists() ) {
3160                         $oldtext = $this->mTitle->getDefaultMessageText();
3161                         if ( $oldtext !== false ) {
3162                                 $oldtitlemsg = 'defaultmessagetext';
3163                                 $oldContent = $this->toEditContent( $oldtext );
3164                         } else {
3165                                 $oldContent = null;
3166                         }
3167                 } else {
3168                         $oldContent = $this->getCurrentContent();
3169                 }
3170
3171                 $textboxContent = $this->toEditContent( $this->textbox1 );
3172
3173                 $newContent = $this->mArticle->replaceSectionContent(
3174                                                         $this->section, $textboxContent,
3175                                                         $this->summary, $this->edittime );
3176
3177                 if ( $newContent ) {
3178                         ContentHandler::runLegacyHooks( 'EditPageGetDiffText', array( $this, &$newContent ) );
3179                         Hooks::run( 'EditPageGetDiffContent', array( $this, &$newContent ) );
3180
3181                         $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
3182                         $newContent = $newContent->preSaveTransform( $this->mTitle, $wgUser, $popts );
3183                 }
3184
3185                 if ( ( $oldContent && !$oldContent->isEmpty() ) || ( $newContent && !$newContent->isEmpty() ) ) {
3186                         $oldtitle = wfMessage( $oldtitlemsg )->parse();
3187                         $newtitle = wfMessage( 'yourtext' )->parse();
3188
3189                         if ( !$oldContent ) {
3190                                 $oldContent = $newContent->getContentHandler()->makeEmptyContent();
3191                         }
3192
3193                         if ( !$newContent ) {
3194                                 $newContent = $oldContent->getContentHandler()->makeEmptyContent();
3195                         }
3196
3197                         $de = $oldContent->getContentHandler()->createDifferenceEngine( $this->mArticle->getContext() );
3198                         $de->setContent( $oldContent, $newContent );
3199
3200                         $difftext = $de->getDiff( $oldtitle, $newtitle );
3201                         $de->showDiffStyle();
3202                 } else {
3203                         $difftext = '';
3204                 }
3205
3206                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
3207         }
3208
3209         /**
3210          * Show the header copyright warning.
3211          */
3212         protected function showHeaderCopyrightWarning() {
3213                 $msg = 'editpage-head-copy-warn';
3214                 if ( !wfMessage( $msg )->isDisabled() ) {
3215                         global $wgOut;
3216                         $wgOut->wrapWikiMsg( "<div class='editpage-head-copywarn'>\n$1\n</div>",
3217                                 'editpage-head-copy-warn' );
3218                 }
3219         }
3220
3221         /**
3222          * Give a chance for site and per-namespace customizations of
3223          * terms of service summary link that might exist separately
3224          * from the copyright notice.
3225          *
3226          * This will display between the save button and the edit tools,
3227          * so should remain short!
3228          */
3229         protected function showTosSummary() {
3230                 $msg = 'editpage-tos-summary';
3231                 Hooks::run( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
3232                 if ( !wfMessage( $msg )->isDisabled() ) {
3233                         global $wgOut;
3234                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
3235                         $wgOut->addWikiMsg( $msg );
3236                         $wgOut->addHTML( '</div>' );
3237                 }
3238         }
3239
3240         protected function showEditTools() {
3241                 global $wgOut;
3242                 $wgOut->addHTML( '<div class="mw-editTools">' .
3243                         wfMessage( 'edittools' )->inContentLanguage()->parse() .
3244                         '</div>' );
3245         }
3246
3247         /**
3248          * Get the copyright warning
3249          *
3250          * Renamed to getCopyrightWarning(), old name kept around for backwards compatibility
3251          * @return string
3252          */
3253         protected function getCopywarn() {
3254                 return self::getCopyrightWarning( $this->mTitle );
3255         }
3256
3257         /**
3258          * Get the copyright warning, by default returns wikitext
3259          *
3260          * @param Title $title
3261          * @param string $format Output format, valid values are any function of a Message object
3262          * @return string
3263          */
3264         public static function getCopyrightWarning( $title, $format = 'plain' ) {
3265                 global $wgRightsText;
3266                 if ( $wgRightsText ) {
3267                         $copywarnMsg = array( 'copyrightwarning',
3268                                 '[[' . wfMessage( 'copyrightpage' )->inContentLanguage()->text() . ']]',
3269                                 $wgRightsText );
3270                 } else {
3271                         $copywarnMsg = array( 'copyrightwarning2',
3272                                 '[[' . wfMessage( 'copyrightpage' )->inContentLanguage()->text() . ']]' );
3273                 }
3274                 // Allow for site and per-namespace customization of contribution/copyright notice.
3275                 Hooks::run( 'EditPageCopyrightWarning', array( $title, &$copywarnMsg ) );
3276
3277                 return "<div id=\"editpage-copywarn\">\n" .
3278                         call_user_func_array( 'wfMessage', $copywarnMsg )->$format() . "\n</div>";
3279         }
3280
3281         /**
3282          * Get the Limit report for page previews
3283          *
3284          * @since 1.22
3285          * @param ParserOutput $output ParserOutput object from the parse
3286          * @return string HTML
3287          */
3288         public static function getPreviewLimitReport( $output ) {
3289                 if ( !$output || !$output->getLimitReportData() ) {
3290                         return '';
3291                 }
3292
3293                 $limitReport = Html::rawElement( 'div', array( 'class' => 'mw-limitReportExplanation' ),
3294                         wfMessage( 'limitreport-title' )->parseAsBlock()
3295                 );
3296
3297                 // Show/hide animation doesn't work correctly on a table, so wrap it in a div.
3298                 $limitReport .= Html::openElement( 'div', array( 'class' => 'preview-limit-report-wrapper' ) );
3299
3300                 $limitReport .= Html::openElement( 'table', array(
3301                         'class' => 'preview-limit-report wikitable'
3302                 ) ) .
3303                         Html::openElement( 'tbody' );
3304
3305                 foreach ( $output->getLimitReportData() as $key => $value ) {
3306                         if ( Hooks::run( 'ParserLimitReportFormat',
3307                                 array( $key, &$value, &$limitReport, true, true )
3308                         ) ) {
3309                                 $keyMsg = wfMessage( $key );
3310                                 $valueMsg = wfMessage( array( "$key-value-html", "$key-value" ) );
3311                                 if ( !$valueMsg->exists() ) {
3312                                         $valueMsg = new RawMessage( '$1' );
3313                                 }
3314                                 if ( !$keyMsg->isDisabled() && !$valueMsg->isDisabled() ) {
3315                                         $limitReport .= Html::openElement( 'tr' ) .
3316                                                 Html::rawElement( 'th', null, $keyMsg->parse() ) .
3317                                                 Html::rawElement( 'td', null, $valueMsg->params( $value )->parse() ) .
3318                                                 Html::closeElement( 'tr' );
3319                                 }
3320                         }
3321                 }
3322
3323                 $limitReport .= Html::closeElement( 'tbody' ) .
3324                         Html::closeElement( 'table' ) .
3325                         Html::closeElement( 'div' );
3326
3327                 return $limitReport;
3328         }
3329
3330         protected function showStandardInputs( &$tabindex = 2 ) {
3331                 global $wgOut;
3332                 $wgOut->addHTML( "<div class='editOptions'>\n" );
3333
3334                 if ( $this->section != 'new' ) {
3335                         $this->showSummaryInput( false, $this->summary );
3336                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
3337                 }
3338
3339                 $checkboxes = $this->getCheckboxes( $tabindex,
3340                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
3341                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
3342
3343                 // Show copyright warning.
3344                 $wgOut->addWikiText( $this->getCopywarn() );
3345                 $wgOut->addHTML( $this->editFormTextAfterWarn );
3346
3347                 $wgOut->addHTML( "<div class='editButtons'>\n" );
3348                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
3349
3350                 $cancel = $this->getCancelLink();
3351                 if ( $cancel !== '' ) {
3352                         $cancel .= Html::element( 'span',
3353                                 array( 'class' => 'mw-editButtons-pipe-separator' ),
3354                                 wfMessage( 'pipe-separator' )->text() );
3355                 }
3356
3357                 $message = wfMessage( 'edithelppage' )->inContentLanguage()->text();
3358                 $edithelpurl = Skin::makeInternalOrExternalUrl( $message );
3359                 $attrs = array(
3360                         'target' => 'helpwindow',
3361                         'href' => $edithelpurl,
3362                 );
3363                 $edithelp = Html::linkButton( wfMessage( 'edithelp' )->text(),
3364                         $attrs, array( 'mw-ui-quiet' ) ) .
3365                         wfMessage( 'word-separator' )->escaped() .
3366                         wfMessage( 'newwindow' )->parse();
3367
3368                 $wgOut->addHTML( "      <span class='cancelLink'>{$cancel}</span>\n" );
3369                 $wgOut->addHTML( "      <span class='editHelp'>{$edithelp}</span>\n" );
3370                 $wgOut->addHTML( "</div><!-- editButtons -->\n" );
3371
3372                 Hooks::run( 'EditPage::showStandardInputs:options', array( $this, $wgOut, &$tabindex ) );
3373
3374                 $wgOut->addHTML( "</div><!-- editOptions -->\n" );
3375         }
3376
3377         /**
3378          * Show an edit conflict. textbox1 is already shown in showEditForm().
3379          * If you want to use another entry point to this function, be careful.
3380          */
3381         protected function showConflict() {
3382                 global $wgOut;
3383
3384                 if ( Hooks::run( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
3385                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3386
3387                         $content1 = $this->toEditContent( $this->textbox1 );
3388                         $content2 = $this->toEditContent( $this->textbox2 );
3389
3390                         $handler = ContentHandler::getForModelID( $this->contentModel );
3391                         $de = $handler->createDifferenceEngine( $this->mArticle->getContext() );
3392                         $de->setContent( $content2, $content1 );
3393                         $de->showDiff(
3394                                 wfMessage( 'yourtext' )->parse(),
3395                                 wfMessage( 'storedversion' )->text()
3396                         );
3397
3398                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3399                         $this->showTextbox2();
3400                 }
3401         }
3402
3403         /**
3404          * @return string
3405          */
3406         public function getCancelLink() {
3407                 $cancelParams = array();
3408                 if ( !$this->isConflict && $this->oldid > 0 ) {
3409                         $cancelParams['oldid'] = $this->oldid;
3410                 }
3411                 $attrs = array( 'id' => 'mw-editform-cancel' );
3412
3413                 return Linker::linkKnown(
3414                         $this->getContextTitle(),
3415                         wfMessage( 'cancel' )->parse(),
3416                         Html::buttonAttributes( $attrs, array( 'mw-ui-quiet' ) ),
3417                         $cancelParams
3418                 );
3419         }
3420
3421         /**
3422          * Returns the URL to use in the form's action attribute.
3423          * This is used by EditPage subclasses when simply customizing the action
3424          * variable in the constructor is not enough. This can be used when the
3425          * EditPage lives inside of a Special page rather than a custom page action.
3426          *
3427          * @param Title $title Title object for which is being edited (where we go to for &action= links)
3428          * @return string
3429          */
3430         protected function getActionURL( Title $title ) {
3431                 return $title->getLocalURL( array( 'action' => $this->action ) );
3432         }
3433
3434         /**
3435          * Check if a page was deleted while the user was editing it, before submit.
3436          * Note that we rely on the logging table, which hasn't been always there,
3437          * but that doesn't matter, because this only applies to brand new
3438          * deletes.
3439          * @return bool
3440          */
3441         protected function wasDeletedSinceLastEdit() {
3442                 if ( $this->deletedSinceEdit !== null ) {
3443                         return $this->deletedSinceEdit;
3444                 }
3445
3446                 $this->deletedSinceEdit = false;
3447
3448                 if ( $this->mTitle->isDeletedQuick() ) {
3449                         $this->lastDelete = $this->getLastDelete();
3450                         if ( $this->lastDelete ) {
3451                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
3452                                 if ( $deleteTime > $this->starttime ) {
3453                                         $this->deletedSinceEdit = true;
3454                                 }
3455                         }
3456                 }
3457
3458                 return $this->deletedSinceEdit;
3459         }
3460
3461         /**
3462          * @return bool|stdClass
3463          */
3464         protected function getLastDelete() {
3465                 $dbr = wfGetDB( DB_SLAVE );
3466                 $data = $dbr->selectRow(
3467                         array( 'logging', 'user' ),
3468                         array(
3469                                 'log_type',
3470                                 'log_action',
3471                                 'log_timestamp',
3472                                 'log_user',
3473                                 'log_namespace',
3474                                 'log_title',
3475                                 'log_comment',
3476                                 'log_params',
3477                                 'log_deleted',
3478                                 'user_name'
3479                         ), array(
3480                                 'log_namespace' => $this->mTitle->getNamespace(),
3481                                 'log_title' => $this->mTitle->getDBkey(),
3482                                 'log_type' => 'delete',
3483                                 'log_action' => 'delete',
3484                                 'user_id=log_user'
3485                         ),
3486                         __METHOD__,
3487                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
3488                 );
3489                 // Quick paranoid permission checks...
3490                 if ( is_object( $data ) ) {
3491                         if ( $data->log_deleted & LogPage::DELETED_USER ) {
3492                                 $data->user_name = wfMessage( 'rev-deleted-user' )->escaped();
3493                         }
3494
3495                         if ( $data->log_deleted & LogPage::DELETED_COMMENT ) {
3496                                 $data->log_comment = wfMessage( 'rev-deleted-comment' )->escaped();
3497                         }
3498                 }
3499
3500                 return $data;
3501         }
3502
3503         /**
3504          * Get the rendered text for previewing.
3505          * @throws MWException
3506          * @return string
3507          */
3508         function getPreviewText() {
3509                 global $wgOut, $wgUser, $wgRawHtml, $wgLang;
3510                 global $wgAllowUserCss, $wgAllowUserJs;
3511
3512                 $stats = $wgOut->getContext()->getStats();
3513
3514                 if ( $wgRawHtml && !$this->mTokenOk ) {
3515                         // Could be an offsite preview attempt. This is very unsafe if
3516                         // HTML is enabled, as it could be an attack.
3517                         $parsedNote = '';
3518                         if ( $this->textbox1 !== '' ) {
3519                                 // Do not put big scary notice, if previewing the empty
3520                                 // string, which happens when you initially edit
3521                                 // a category page, due to automatic preview-on-open.
3522                                 $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
3523                                         wfMessage( 'session_fail_preview_html' )->text() . "</div>", true, /* interface */true );
3524                         }
3525                         $stats->increment( 'edit.failures.session_loss' );
3526                         return $parsedNote;
3527                 }
3528
3529                 $note = '';
3530
3531                 try {
3532                         $content = $this->toEditContent( $this->textbox1 );
3533
3534                         $previewHTML = '';
3535                         if ( !Hooks::run(
3536                                 'AlternateEditPreview',
3537                                 array( $this, &$content, &$previewHTML, &$this->mParserOutput ) )
3538                         ) {
3539                                 return $previewHTML;
3540                         }
3541
3542                         # provide a anchor link to the editform
3543                         $continueEditing = '<span class="mw-continue-editing">' .
3544                                 '[[#' . self::EDITFORM_ID . '|' . $wgLang->getArrow() . ' ' .
3545                                 wfMessage( 'continue-editing' )->text() . ']]</span>';
3546                         if ( $this->mTriedSave && !$this->mTokenOk ) {
3547                                 if ( $this->mTokenOkExceptSuffix ) {
3548                                         $note = wfMessage( 'token_suffix_mismatch' )->plain();
3549                                         $stats->increment( 'edit.failures.bad_token' );
3550                                 } else {
3551                                         $note = wfMessage( 'session_fail_preview' )->plain();
3552                                         $stats->increment( 'edit.failures.session_loss' );
3553                                 }
3554                         } elseif ( $this->incompleteForm ) {
3555                                 $note = wfMessage( 'edit_form_incomplete' )->plain();
3556                                 if ( $this->mTriedSave ) {
3557                                         $stats->increment( 'edit.failures.incomplete_form' );
3558                                 }
3559                         } else {
3560                                 $note = wfMessage( 'previewnote' )->plain() . ' ' . $continueEditing;
3561                         }
3562
3563                         $parserOptions = $this->mArticle->makeParserOptions( $this->mArticle->getContext() );
3564                         $parserOptions->setIsPreview( true );
3565                         $parserOptions->setIsSectionPreview( !is_null( $this->section ) && $this->section !== '' );
3566
3567                         # don't parse non-wikitext pages, show message about preview
3568                         if ( $this->mTitle->isCssJsSubpage() || $this->mTitle->isCssOrJsPage() ) {
3569                                 if ( $this->mTitle->isCssJsSubpage() ) {
3570                                         $level = 'user';
3571                                 } elseif ( $this->mTitle->isCssOrJsPage() ) {
3572                                         $level = 'site';
3573                                 } else {
3574                                         $level = false;
3575                                 }
3576
3577                                 if ( $content->getModel() == CONTENT_MODEL_CSS ) {
3578                                         $format = 'css';
3579                                         if ( $level === 'user' && !$wgAllowUserCss ) {
3580                                                 $format = false;
3581                                         }
3582                                 } elseif ( $content->getModel() == CONTENT_MODEL_JAVASCRIPT ) {
3583                                         $format = 'js';
3584                                         if ( $level === 'user' && !$wgAllowUserJs ) {
3585                                                 $format = false;
3586                                         }
3587                                 } else {
3588                                         $format = false;
3589                                 }
3590
3591                                 # Used messages to make sure grep find them:
3592                                 # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
3593                                 if ( $level && $format ) {
3594                                         $note = "<div id='mw-{$level}{$format}preview'>" .
3595                                                 wfMessage( "{$level}{$format}preview" )->text() .
3596                                                 ' ' . $continueEditing . "</div>";
3597                                 }
3598                         }
3599
3600                         # If we're adding a comment, we need to show the
3601                         # summary as the headline
3602                         if ( $this->section === "new" && $this->summary !== "" ) {
3603                                 $content = $content->addSectionHeader( $this->summary );
3604                         }
3605
3606                         $hook_args = array( $this, &$content );
3607                         ContentHandler::runLegacyHooks( 'EditPageGetPreviewText', $hook_args );
3608                         Hooks::run( 'EditPageGetPreviewContent', $hook_args );
3609
3610                         $parserOptions->enableLimitReport();
3611
3612                         # For CSS/JS pages, we should have called the ShowRawCssJs hook here.
3613                         # But it's now deprecated, so never mind
3614
3615                         $pstContent = $content->preSaveTransform( $this->mTitle, $wgUser, $parserOptions );
3616                         $scopedCallback = $parserOptions->setupFakeRevision(
3617                                 $this->mTitle, $pstContent, $wgUser );
3618                         $parserOutput = $pstContent->getParserOutput( $this->mTitle, null, $parserOptions );
3619
3620                         # Try to stash the edit for the final submission step
3621                         # @todo: different date format preferences cause cache misses
3622                         ApiStashEdit::stashEditFromPreview(
3623                                 $this->getArticle(), $content, $pstContent,
3624                                 $parserOutput, $parserOptions, $parserOptions, wfTimestampNow()
3625                         );
3626
3627                         $parserOutput->setEditSectionTokens( false ); // no section edit links
3628                         $previewHTML = $parserOutput->getText();
3629                         $this->mParserOutput = $parserOutput;
3630                         $wgOut->addParserOutputMetadata( $parserOutput );
3631
3632                         if ( count( $parserOutput->getWarnings() ) ) {
3633                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
3634                         }
3635                 } catch ( MWContentSerializationException $ex ) {
3636                         $m = wfMessage(
3637                                 'content-failed-to-parse',
3638                                 $this->contentModel,
3639                                 $this->contentFormat,
3640                                 $ex->getMessage()
3641                         );
3642                         $note .= "\n\n" . $m->parse();
3643                         $previewHTML = '';
3644                 }
3645
3646                 if ( $this->isConflict ) {
3647                         $conflict = '<h2 id="mw-previewconflict">'
3648                                 . wfMessage( 'previewconflict' )->escaped() . "</h2>\n";
3649                 } else {
3650                         $conflict = '<hr />';
3651                 }
3652
3653                 $previewhead = "<div class='previewnote'>\n" .
3654                         '<h2 id="mw-previewheader">' . wfMessage( 'preview' )->escaped() . "</h2>" .
3655                         $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
3656
3657                 $pageViewLang = $this->mTitle->getPageViewLanguage();
3658                 $attribs = array( 'lang' => $pageViewLang->getHtmlCode(), 'dir' => $pageViewLang->getDir(),
3659                         'class' => 'mw-content-' . $pageViewLang->getDir() );
3660                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
3661
3662                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
3663         }
3664
3665         /**
3666          * @return array
3667          */
3668         function getTemplates() {
3669                 if ( $this->preview || $this->section != '' ) {
3670                         $templates = array();
3671                         if ( !isset( $this->mParserOutput ) ) {
3672                                 return $templates;
3673                         }
3674                         foreach ( $this->mParserOutput->getTemplates() as $ns => $template ) {
3675                                 foreach ( array_keys( $template ) as $dbk ) {
3676                                         $templates[] = Title::makeTitle( $ns, $dbk );
3677                                 }
3678                         }
3679                         return $templates;
3680                 } else {
3681                         return $this->mTitle->getTemplateLinksFrom();
3682                 }
3683         }
3684
3685         /**
3686          * Shows a bulletin board style toolbar for common editing functions.
3687          * It can be disabled in the user preferences.
3688          *
3689          * @return string
3690          */
3691         static function getEditToolbar() {
3692                 global $wgContLang, $wgOut;
3693                 global $wgEnableUploads, $wgForeignFileRepos;
3694
3695                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
3696
3697                 /**
3698                  * $toolarray is an array of arrays each of which includes the
3699                  * opening tag, the closing tag, optionally a sample text that is
3700                  * inserted between the two when no selection is highlighted
3701                  * and.  The tip text is shown when the user moves the mouse
3702                  * over the button.
3703                  *
3704                  * Images are defined in ResourceLoaderEditToolbarModule.
3705                  */
3706                 $toolarray = array(
3707                         array(
3708                                 'id'     => 'mw-editbutton-bold',
3709                                 'open'   => '\'\'\'',
3710                                 'close'  => '\'\'\'',
3711                                 'sample' => wfMessage( 'bold_sample' )->text(),
3712                                 'tip'    => wfMessage( 'bold_tip' )->text(),
3713                         ),
3714                         array(
3715                                 'id'     => 'mw-editbutton-italic',
3716                                 'open'   => '\'\'',
3717                                 'close'  => '\'\'',
3718                                 'sample' => wfMessage( 'italic_sample' )->text(),
3719                                 'tip'    => wfMessage( 'italic_tip' )->text(),
3720                         ),
3721                         array(
3722                                 'id'     => 'mw-editbutton-link',
3723                                 'open'   => '[[',
3724                                 'close'  => ']]',
3725                                 'sample' => wfMessage( 'link_sample' )->text(),
3726                                 'tip'    => wfMessage( 'link_tip' )->text(),
3727                         ),
3728                         array(
3729                                 'id'     => 'mw-editbutton-extlink',
3730                                 'open'   => '[',
3731                                 'close'  => ']',
3732                                 'sample' => wfMessage( 'extlink_sample' )->text(),
3733                                 'tip'    => wfMessage( 'extlink_tip' )->text(),
3734                         ),
3735                         array(
3736                                 'id'     => 'mw-editbutton-headline',
3737                                 'open'   => "\n== ",
3738                                 'close'  => " ==\n",
3739                                 'sample' => wfMessage( 'headline_sample' )->text(),
3740                                 'tip'    => wfMessage( 'headline_tip' )->text(),
3741                         ),
3742                         $imagesAvailable ? array(
3743                                 'id'     => 'mw-editbutton-image',
3744                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
3745                                 'close'  => ']]',
3746                                 'sample' => wfMessage( 'image_sample' )->text(),
3747                                 'tip'    => wfMessage( 'image_tip' )->text(),
3748                         ) : false,
3749                         $imagesAvailable ? array(
3750                                 'id'     => 'mw-editbutton-media',
3751                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
3752                                 'close'  => ']]',
3753                                 'sample' => wfMessage( 'media_sample' )->text(),
3754                                 'tip'    => wfMessage( 'media_tip' )->text(),
3755                         ) : false,
3756                         array(
3757                                 'id'     => 'mw-editbutton-nowiki',
3758                                 'open'   => "<nowiki>",
3759                                 'close'  => "</nowiki>",
3760                                 'sample' => wfMessage( 'nowiki_sample' )->text(),
3761                                 'tip'    => wfMessage( 'nowiki_tip' )->text(),
3762                         ),
3763                         array(
3764                                 'id'     => 'mw-editbutton-signature',
3765                                 'open'   => '--~~~~',
3766                                 'close'  => '',
3767                                 'sample' => '',
3768                                 'tip'    => wfMessage( 'sig_tip' )->text(),
3769                         ),
3770                         array(
3771                                 'id'     => 'mw-editbutton-hr',
3772                                 'open'   => "\n----\n",
3773                                 'close'  => '',
3774                                 'sample' => '',
3775                                 'tip'    => wfMessage( 'hr_tip' )->text(),
3776                         )
3777                 );
3778
3779                 $script = 'mw.loader.using("mediawiki.toolbar", function () {';
3780                 foreach ( $toolarray as $tool ) {
3781                         if ( !$tool ) {
3782                                 continue;
3783                         }
3784
3785                         $params = array(
3786                                 // Images are defined in ResourceLoaderEditToolbarModule
3787                                 false,
3788                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
3789                                 // Older browsers show a "speedtip" type message only for ALT.
3790                                 // Ideally these should be different, realistically they
3791                                 // probably don't need to be.
3792                                 $tool['tip'],
3793                                 $tool['open'],
3794                                 $tool['close'],
3795                                 $tool['sample'],
3796                                 $tool['id'],
3797                         );
3798
3799                         $script .= Xml::encodeJsCall(
3800                                 'mw.toolbar.addButton',
3801                                 $params,
3802                                 ResourceLoader::inDebugMode()
3803                         );
3804                 }
3805
3806                 $script .= '});';
3807                 $wgOut->addScript( ResourceLoader::makeInlineScript( $script ) );
3808
3809                 $toolbar = '<div id="toolbar"></div>';
3810
3811                 Hooks::run( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
3812
3813                 return $toolbar;
3814         }
3815
3816         /**
3817          * Returns an array of html code of the following checkboxes:
3818          * minor and watch
3819          *
3820          * @param int $tabindex Current tabindex
3821          * @param array $checked Array of checkbox => bool, where bool indicates the checked
3822          *                 status of the checkbox
3823          *
3824          * @return array
3825          */
3826         public function getCheckboxes( &$tabindex, $checked ) {
3827                 global $wgUser, $wgUseMediaWikiUIEverywhere;
3828
3829                 $checkboxes = array();
3830
3831                 // don't show the minor edit checkbox if it's a new page or section
3832                 if ( !$this->isNew ) {
3833                         $checkboxes['minor'] = '';
3834                         $minorLabel = wfMessage( 'minoredit' )->parse();
3835                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
3836                                 $attribs = array(
3837                                         'tabindex' => ++$tabindex,
3838                                         'accesskey' => wfMessage( 'accesskey-minoredit' )->text(),
3839                                         'id' => 'wpMinoredit',
3840                                 );
3841                                 $minorEditHtml =
3842                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
3843                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
3844                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
3845                                         ">{$minorLabel}</label>";
3846
3847                                 if ( $wgUseMediaWikiUIEverywhere ) {
3848                                         $checkboxes['minor'] = Html::openElement( 'div', array( 'class' => 'mw-ui-checkbox' ) ) .
3849                                                 $minorEditHtml .
3850                                         Html::closeElement( 'div' );
3851                                 } else {
3852                                         $checkboxes['minor'] = $minorEditHtml;
3853                                 }
3854                         }
3855                 }
3856
3857                 $watchLabel = wfMessage( 'watchthis' )->parse();
3858                 $checkboxes['watch'] = '';
3859                 if ( $wgUser->isLoggedIn() ) {
3860                         $attribs = array(
3861                                 'tabindex' => ++$tabindex,
3862                                 'accesskey' => wfMessage( 'accesskey-watch' )->text(),
3863                                 'id' => 'wpWatchthis',
3864                         );
3865                         $watchThisHtml =
3866                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
3867                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
3868                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
3869                                 ">{$watchLabel}</label>";
3870                         if ( $wgUseMediaWikiUIEverywhere ) {
3871                                 $checkboxes['watch'] = Html::openElement( 'div', array( 'class' => 'mw-ui-checkbox' ) ) .
3872                                         $watchThisHtml .
3873                                         Html::closeElement( 'div' );
3874                         } else {
3875                                 $checkboxes['watch'] = $watchThisHtml;
3876                         }
3877                 }
3878                 Hooks::run( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
3879                 return $checkboxes;
3880         }
3881
3882         /**
3883          * Returns an array of html code of the following buttons:
3884          * save, diff, preview and live
3885          *
3886          * @param int $tabindex Current tabindex
3887          *
3888          * @return array
3889          */
3890         public function getEditButtons( &$tabindex ) {
3891                 $buttons = array();
3892
3893                 $attribs = array(
3894                         'id' => 'wpSave',
3895                         'name' => 'wpSave',
3896                         'tabindex' => ++$tabindex,
3897                 ) + Linker::tooltipAndAccesskeyAttribs( 'save' );
3898                 $buttons['save'] = Html::submitButton( wfMessage( 'savearticle' )->text(),
3899                         $attribs, array( 'mw-ui-constructive' ) );
3900
3901                 ++$tabindex; // use the same for preview and live preview
3902                 $attribs = array(
3903                         'id' => 'wpPreview',
3904                         'name' => 'wpPreview',
3905                         'tabindex' => $tabindex,
3906                 ) + Linker::tooltipAndAccesskeyAttribs( 'preview' );
3907                 $buttons['preview'] = Html::submitButton( wfMessage( 'showpreview' )->text(),
3908                         $attribs );
3909                 $buttons['live'] = '';
3910
3911                 $attribs = array(
3912                         'id' => 'wpDiff',
3913                         'name' => 'wpDiff',
3914                         'tabindex' => ++$tabindex,
3915                 ) + Linker::tooltipAndAccesskeyAttribs( 'diff' );
3916                 $buttons['diff'] = Html::submitButton( wfMessage( 'showdiff' )->text(),
3917                         $attribs );
3918
3919                 Hooks::run( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
3920                 return $buttons;
3921         }
3922
3923         /**
3924          * Creates a basic error page which informs the user that
3925          * they have attempted to edit a nonexistent section.
3926          */
3927         function noSuchSectionPage() {
3928                 global $wgOut;
3929
3930                 $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
3931
3932                 $res = wfMessage( 'nosuchsectiontext', $this->section )->parseAsBlock();
3933                 Hooks::run( 'EditPageNoSuchSection', array( &$this, &$res ) );
3934                 $wgOut->addHTML( $res );
3935
3936                 $wgOut->returnToMain( false, $this->mTitle );
3937         }
3938
3939         /**
3940          * Show "your edit contains spam" page with your diff and text
3941          *
3942          * @param string|array|bool $match Text (or array of texts) which triggered one or more filters
3943          */
3944         public function spamPageWithContent( $match = false ) {
3945                 global $wgOut, $wgLang;
3946                 $this->textbox2 = $this->textbox1;
3947
3948                 if ( is_array( $match ) ) {
3949                         $match = $wgLang->listToText( $match );
3950                 }
3951                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3952
3953                 $wgOut->addHTML( '<div id="spamprotected">' );
3954                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3955                 if ( $match ) {
3956                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3957                 }
3958                 $wgOut->addHTML( '</div>' );
3959
3960                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3961                 $this->showDiff();
3962
3963                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3964                 $this->showTextbox2();
3965
3966                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
3967         }
3968
3969         /**
3970          * Check if the browser is on a blacklist of user-agents known to
3971          * mangle UTF-8 data on form submission. Returns true if Unicode
3972          * should make it through, false if it's known to be a problem.
3973          * @return bool
3974          */
3975         private function checkUnicodeCompliantBrowser() {
3976                 global $wgBrowserBlackList, $wgRequest;
3977
3978                 $currentbrowser = $wgRequest->getHeader( 'User-Agent' );
3979                 if ( $currentbrowser === false ) {
3980                         // No User-Agent header sent? Trust it by default...
3981                         return true;
3982                 }
3983
3984                 foreach ( $wgBrowserBlackList as $browser ) {
3985                         if ( preg_match( $browser, $currentbrowser ) ) {
3986                                 return false;
3987                         }
3988                 }
3989                 return true;
3990         }
3991
3992         /**
3993          * Filter an input field through a Unicode de-armoring process if it
3994          * came from an old browser with known broken Unicode editing issues.
3995          *
3996          * @param WebRequest $request
3997          * @param string $field
3998          * @return string
3999          */
4000         protected function safeUnicodeInput( $request, $field ) {
4001                 $text = rtrim( $request->getText( $field ) );
4002                 return $request->getBool( 'safemode' )
4003                         ? $this->unmakeSafe( $text )
4004                         : $text;
4005         }
4006
4007         /**
4008          * Filter an output field through a Unicode armoring process if it is
4009          * going to an old browser with known broken Unicode editing issues.
4010          *
4011          * @param string $text
4012          * @return string
4013          */
4014         protected function safeUnicodeOutput( $text ) {
4015                 global $wgContLang;
4016                 $codedText = $wgContLang->recodeForEdit( $text );
4017                 return $this->checkUnicodeCompliantBrowser()
4018                         ? $codedText
4019                         : $this->makeSafe( $codedText );
4020         }
4021
4022         /**
4023          * A number of web browsers are known to corrupt non-ASCII characters
4024          * in a UTF-8 text editing environment. To protect against this,
4025          * detected browsers will be served an armored version of the text,
4026          * with non-ASCII chars converted to numeric HTML character references.
4027          *
4028          * Preexisting such character references will have a 0 added to them
4029          * to ensure that round-trips do not alter the original data.
4030          *
4031          * @param string $invalue
4032          * @return string
4033          */
4034         private function makeSafe( $invalue ) {
4035                 // Armor existing references for reversibility.
4036                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
4037
4038                 $bytesleft = 0;
4039                 $result = "";
4040                 $working = 0;
4041                 $valueLength = strlen( $invalue );
4042                 for ( $i = 0; $i < $valueLength; $i++ ) {
4043                         $bytevalue = ord( $invalue[$i] );
4044                         if ( $bytevalue <= 0x7F ) { // 0xxx xxxx
4045                                 $result .= chr( $bytevalue );
4046                                 $bytesleft = 0;
4047                         } elseif ( $bytevalue <= 0xBF ) { // 10xx xxxx
4048                                 $working = $working << 6;
4049                                 $working += ( $bytevalue & 0x3F );
4050                                 $bytesleft--;
4051                                 if ( $bytesleft <= 0 ) {
4052                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
4053                                 }
4054                         } elseif ( $bytevalue <= 0xDF ) { // 110x xxxx
4055                                 $working = $bytevalue & 0x1F;
4056                                 $bytesleft = 1;
4057                         } elseif ( $bytevalue <= 0xEF ) { // 1110 xxxx
4058                                 $working = $bytevalue & 0x0F;
4059                                 $bytesleft = 2;
4060                         } else { // 1111 0xxx
4061                                 $working = $bytevalue & 0x07;
4062                                 $bytesleft = 3;
4063                         }
4064                 }
4065                 return $result;
4066         }
4067
4068         /**
4069          * Reverse the previously applied transliteration of non-ASCII characters
4070          * back to UTF-8. Used to protect data from corruption by broken web browsers
4071          * as listed in $wgBrowserBlackList.
4072          *
4073          * @param string $invalue
4074          * @return string
4075          */
4076         private function unmakeSafe( $invalue ) {
4077                 $result = "";
4078                 $valueLength = strlen( $invalue );
4079                 for ( $i = 0; $i < $valueLength; $i++ ) {
4080                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i + 3] != '0' ) ) {
4081                                 $i += 3;
4082                                 $hexstring = "";
4083                                 do {
4084                                         $hexstring .= $invalue[$i];
4085                                         $i++;
4086                                 } while ( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
4087
4088                                 // Do some sanity checks. These aren't needed for reversibility,
4089                                 // but should help keep the breakage down if the editor
4090                                 // breaks one of the entities whilst editing.
4091                                 if ( ( substr( $invalue, $i, 1 ) == ";" ) && ( strlen( $hexstring ) <= 6 ) ) {
4092                                         $codepoint = hexdec( $hexstring );
4093                                         $result .= UtfNormal\Utils::codepointToUtf8( $codepoint );
4094                                 } else {
4095                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
4096                                 }
4097                         } else {
4098                                 $result .= substr( $invalue, $i, 1 );
4099                         }
4100                 }
4101                 // reverse the transform that we made for reversibility reasons.
4102                 return strtr( $result, array( "&#x0" => "&#x" ) );
4103         }
4104 }