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 use MediaWiki\Block\DatabaseBlock;
  24 use MediaWiki\EditPage\TextboxBuilder;
  25 use MediaWiki\EditPage\TextConflictHelper;
  26 use MediaWiki\Logger\LoggerFactory;
  27 use MediaWiki\MediaWikiServices;
  28 use MediaWiki\Storage\RevisionRecord;
  29 use Wikimedia\ScopedCallback;
  30
  31 /**
  32  * The edit page/HTML interface (split from Article)
  33  * The actual database and text munging is still in Article,
  34  * but it should get easier to call those from alternate
  35  * interfaces.
  36  *
  37  * EditPage cares about two distinct titles:
  38  * $this->mContextTitle is the page that forms submit to, links point to,
  39  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  40  * page in the database that is actually being edited. These are
  41  * usually the same, but they are now allowed to be different.
  42  *
  43  * Surgeon General's Warning: prolonged exposure to this class is known to cause
  44  * headaches, which may be fatal.
  45  */
  46 class EditPage {
  47         /**
  48          * Used for Unicode support checks
  49          */
  50         const UNICODE_CHECK = 'ℳ𝒲♥𝓊𝓃𝒾𝒸ℴ𝒹ℯ';
  51
  52         /**
  53          * Status: Article successfully updated
  54          */
  55         const AS_SUCCESS_UPDATE = 200;
  56
  57         /**
  58          * Status: Article successfully created
  59          */
  60         const AS_SUCCESS_NEW_ARTICLE = 201;
  61
  62         /**
  63          * Status: Article update aborted by a hook function
  64          */
  65         const AS_HOOK_ERROR = 210;
  66
  67         /**
  68          * Status: A hook function returned an error
  69          */
  70         const AS_HOOK_ERROR_EXPECTED = 212;
  71
  72         /**
  73          * Status: User is blocked from editing this page
  74          */
  75         const AS_BLOCKED_PAGE_FOR_USER = 215;
  76
  77         /**
  78          * Status: Content too big (> $wgMaxArticleSize)
  79          */
  80         const AS_CONTENT_TOO_BIG = 216;
  81
  82         /**
  83          * Status: this anonymous user is not allowed to edit this page
  84          */
  85         const AS_READ_ONLY_PAGE_ANON = 218;
  86
  87         /**
  88          * Status: this logged in user is not allowed to edit this page
  89          */
  90         const AS_READ_ONLY_PAGE_LOGGED = 219;
  91
  92         /**
  93          * Status: wiki is in readonly mode (wfReadOnly() == true)
  94          */
  95         const AS_READ_ONLY_PAGE = 220;
  96
  97         /**
  98          * Status: rate limiter for action 'edit' was tripped
  99          */
 100         const AS_RATE_LIMITED = 221;
 101
 102         /**
 103          * Status: article was deleted while editing and param wpRecreate == false or form
 104          * was not posted
 105          */
 106         const AS_ARTICLE_WAS_DELETED = 222;
 107
 108         /**
 109          * Status: user tried to create this page, but is not allowed to do that
 110          * ( Title->userCan('create') == false )
 111          */
 112         const AS_NO_CREATE_PERMISSION = 223;
 113
 114         /**
 115          * Status: user tried to create a blank page and wpIgnoreBlankArticle == false
 116          */
 117         const AS_BLANK_ARTICLE = 224;
 118
 119         /**
 120          * Status: (non-resolvable) edit conflict
 121          */
 122         const AS_CONFLICT_DETECTED = 225;
 123
 124         /**
 125          * Status: no edit summary given and the user has forceeditsummary set and the user is not
 126          * editing in his own userspace or talkspace and wpIgnoreBlankSummary == false
 127          */
 128         const AS_SUMMARY_NEEDED = 226;
 129
 130         /**
 131          * Status: user tried to create a new section without content
 132          */
 133         const AS_TEXTBOX_EMPTY = 228;
 134
 135         /**
 136          * Status: article is too big (> $wgMaxArticleSize), after merging in the new section
 137          */
 138         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
 139
 140         /**
 141          * Status: WikiPage::doEdit() was unsuccessful
 142          */
 143         const AS_END = 231;
 144
 145         /**
 146          * Status: summary contained spam according to one of the regexes in $wgSummarySpamRegex
 147          */
 148         const AS_SPAM_ERROR = 232;
 149
 150         /**
 151          * Status: anonymous user is not allowed to upload (User::isAllowed('upload') == false)
 152          */
 153         const AS_IMAGE_REDIRECT_ANON = 233;
 154
 155         /**
 156          * Status: logged in user is not allowed to upload (User::isAllowed('upload') == false)
 157          */
 158         const AS_IMAGE_REDIRECT_LOGGED = 234;
 159
 160         /**
 161          * Status: user tried to modify the content model, but is not allowed to do that
 162          * ( User::isAllowed('editcontentmodel') == false )
 163          */
 164         const AS_NO_CHANGE_CONTENT_MODEL = 235;
 165
 166         /**
 167          * Status: user tried to create self-redirect (redirect to the same article) and
 168          * wpIgnoreSelfRedirect == false
 169          */
 170         const AS_SELF_REDIRECT = 236;
 171
 172         /**
 173          * Status: an error relating to change tagging. Look at the message key for
 174          * more details
 175          */
 176         const AS_CHANGE_TAG_ERROR = 237;
 177
 178         /**
 179          * Status: can't parse content
 180          */
 181         const AS_PARSE_ERROR = 240;
 182
 183         /**
 184          * Status: when changing the content model is disallowed due to
 185          * $wgContentHandlerUseDB being false
 186          */
 187         const AS_CANNOT_USE_CUSTOM_MODEL = 241;
 188
 189         /**
 190          * Status: edit rejected because browser doesn't support Unicode.
 191          */
 192         const AS_UNICODE_NOT_SUPPORTED = 242;
 193
 194         /**
 195          * HTML id and name for the beginning of the edit form.
 196          */
 197         const EDITFORM_ID = 'editform';
 198
 199         /**
 200          * Prefix of key for cookie used to pass post-edit state.
 201          * The revision id edited is added after this
 202          */
 203         const POST_EDIT_COOKIE_KEY_PREFIX = 'PostEditRevision';
 204
 205         /**
 206          * Duration of PostEdit cookie, in seconds.
 207          * The cookie will be removed instantly if the JavaScript runs.
 208          *
 209          * Otherwise, though, we don't want the cookies to accumulate.
 210          * RFC 2109 ( https://www.ietf.org/rfc/rfc2109.txt ) specifies a possible
 211          * limit of only 20 cookies per domain. This still applies at least to some
 212          * versions of IE without full updates:
 213          * https://blogs.msdn.com/b/ieinternals/archive/2009/08/20/wininet-ie-cookie-internals-faq.aspx
 214          *
 215          * A value of 20 minutes should be enough to take into account slow loads and minor
 216          * clock skew while still avoiding cookie accumulation when JavaScript is turned off.
 217          */
 218         const POST_EDIT_COOKIE_DURATION = 1200;
 219
 220         /**
 221          * @deprecated for public usage since 1.30 use EditPage::getArticle()
 222          * @var Article
 223          */
 224         public $mArticle;
 225         /** @var WikiPage */
 226         private $page;
 227
 228         /**
 229          * @deprecated for public usage since 1.30 use EditPage::getTitle()
 230          * @var Title
 231          */
 232         public $mTitle;
 233
 234         /** @var null|Title */
 235         private $mContextTitle = null;
 236
 237         /** @var string */
 238         public $action = 'submit';
 239
 240         /** @var bool Whether an edit conflict needs to be resolved. Detected based on whether
 241          * $editRevId is different than the latest revision. When a conflict has successfully
 242          * been resolved by a 3-way-merge, this field is set to false.
 243          */
 244         public $isConflict = false;
 245
 246         /** @var bool New page or new section */
 247         public $isNew = false;
 248
 249         /** @var bool */
 250         public $deletedSinceEdit;
 251
 252         /** @var string */
 253         public $formtype;
 254
 255         /** @var bool
 256          * True the first time the edit form is rendered, false after re-rendering
 257          * with diff, save prompts, etc.
 258          */
 259         public $firsttime;
 260
 261         /** @var bool|stdClass */
 262         public $lastDelete;
 263
 264         /** @var bool */
 265         public $mTokenOk = false;
 266
 267         /** @var bool */
 268         public $mTokenOkExceptSuffix = false;
 269
 270         /** @var bool */
 271         public $mTriedSave = false;
 272
 273         /** @var bool */
 274         public $incompleteForm = false;
 275
 276         /** @var bool */
 277         public $tooBig = false;
 278
 279         /** @var bool */
 280         public $missingComment = false;
 281
 282         /** @var bool */
 283         public $missingSummary = false;
 284
 285         /** @var bool */
 286         public $allowBlankSummary = false;
 287
 288         /** @var bool */
 289         protected $blankArticle = false;
 290
 291         /** @var bool */
 292         protected $allowBlankArticle = false;
 293
 294         /** @var bool */
 295         protected $selfRedirect = false;
 296
 297         /** @var bool */
 298         protected $allowSelfRedirect = false;
 299
 300         /** @var string */
 301         public $autoSumm = '';
 302
 303         /** @var string */
 304         public $hookError = '';
 305
 306         /** @var ParserOutput */
 307         public $mParserOutput;
 308
 309         /** @var bool Has a summary been preset using GET parameter &summary= ? */
 310         public $hasPresetSummary = false;
 311
 312         /** @var Revision|bool|null A revision object corresponding to $this->editRevId. */
 313         public $mBaseRevision = false;
 314
 315         /** @var bool */
 316         public $mShowSummaryField = true;
 317
 318         # Form values
 319
 320         /** @var bool */
 321         public $save = false;
 322
 323         /** @var bool */
 324         public $preview = false;
 325
 326         /** @var bool */
 327         public $diff = false;
 328
 329         /** @var bool */
 330         public $minoredit = false;
 331
 332         /** @var bool */
 333         public $watchthis = false;
 334
 335         /** @var bool */
 336         public $recreate = false;
 337
 338         /** @var string
 339          * Page content input field.
 340          */
 341         public $textbox1 = '';
 342
 343         /** @var string */
 344         public $textbox2 = '';
 345
 346         /** @var string */
 347         public $summary = '';
 348
 349         /** @var bool
 350          * If true, hide the summary field.
 351          */
 352         public $nosummary = false;
 353
 354         /** @var string
 355          * Timestamp of the latest revision of the page when editing was initiated
 356          * on the client.
 357          */
 358         public $edittime = '';
 359
 360         /** @var int Revision ID of the latest revision of the page when editing
 361          * was initiated on the client.  This is used to detect and resolve edit
 362          * conflicts.
 363          *
 364          * @note 0 if the page did not exist at that time.
 365          * @note When starting an edit from an old revision, this still records the current
 366          * revision at the time, not the one the edit is based on.
 367          *
 368          * @see $oldid
 369          * @see getBaseRevision()
 370          */
 371         private $editRevId = null;
 372
 373         /** @var string */
 374         public $section = '';
 375
 376         /** @var string */
 377         public $sectiontitle = '';
 378
 379         /** @var string
 380          * Timestamp from the first time the edit form was rendered.
 381          */
 382         public $starttime = '';
 383
 384         /** @var int Revision ID the edit is based on, or 0 if it's the current revision.
 385          * FIXME: This isn't used in conflict resolution--provide a better
 386          * justification or merge with parentRevId.
 387          * @see $editRevId
 388          */
 389         public $oldid = 0;
 390
 391         /** @var int Revision ID the edit is based on, adjusted when an edit conflict is resolved.
 392          * @see $editRevId
 393          * @see $oldid
 394          * @see getparentRevId()
 395          */
 396         public $parentRevId = 0;
 397
 398         /** @var string */
 399         public $editintro = '';
 400
 401         /** @var null */
 402         public $scrolltop = null;
 403
 404         /** @var bool */
 405         public $bot = true;
 406
 407         /** @var string */
 408         public $contentModel;
 409
 410         /** @var null|string */
 411         public $contentFormat = null;
 412
 413         /** @var null|array */
 414         private $changeTags = null;
 415
 416         # Placeholders for text injection by hooks (must be HTML)
 417         # extensions should take care to _append_ to the present value
 418
 419         /** @var string Before even the preview */
 420         public $editFormPageTop = '';
 421         public $editFormTextTop = '';
 422         public $editFormTextBeforeContent = '';
 423         public $editFormTextAfterWarn = '';
 424         public $editFormTextAfterTools = '';
 425         public $editFormTextBottom = '';
 426         public $editFormTextAfterContent = '';
 427         public $previewTextAfterContent = '';
 428         public $mPreloadContent = null;
 429
 430         /* $didSave should be set to true whenever an article was successfully altered. */
 431         public $didSave = false;
 432         public $undidRev = 0;
 433
 434         public $suppressIntro = false;
 435
 436         /** @var bool */
 437         protected $edit;
 438
 439         /** @var bool|int */
 440         protected $contentLength = false;
 441
 442         /**
 443          * @var bool Set in ApiEditPage, based on ContentHandler::allowsDirectApiEditing
 444          */
 445         private $enableApiEditOverride = false;
 446
 447         /**
 448          * @var IContextSource
 449          */
 450         protected $context;
 451
 452         /**
 453          * @var bool Whether an old revision is edited
 454          */
 455         private $isOldRev = false;
 456
 457         /**
 458          * @var string|null What the user submitted in the 'wpUnicodeCheck' field
 459          */
 460         private $unicodeCheck;
 461
 462         /**
 463          * Factory function to create an edit conflict helper
 464          *
 465          * @var callable
 466          */
 467         private $editConflictHelperFactory;
 468
 469         /**
 470          * @var TextConflictHelper|null
 471          */
 472         private $editConflictHelper;
 473
 474         /**
 475          * @param Article $article
 476          */
 477         public function __construct( Article $article ) {
 478                 $this->mArticle = $article;
 479                 $this->page = $article->getPage(); // model object
 480                 $this->mTitle = $article->getTitle();
 481
 482                 // Make sure the local context is in sync with other member variables.
 483                 // Particularly make sure everything is using the same WikiPage instance.
 484                 // This should probably be the case in Article as well, but it's
 485                 // particularly important for EditPage, to make use of the in-place caching
 486                 // facility in WikiPage::prepareContentForEdit.
 487                 $this->context = new DerivativeContext( $article->getContext() );
 488                 $this->context->setWikiPage( $this->page );
 489                 $this->context->setTitle( $this->mTitle );
 490
 491                 $this->contentModel = $this->mTitle->getContentModel();
 492
 493                 $handler = ContentHandler::getForModelID( $this->contentModel );
 494                 $this->contentFormat = $handler->getDefaultFormat();
 495                 $this->editConflictHelperFactory = [ $this, 'newTextConflictHelper' ];
 496         }
 497
 498         /**
 499          * @return Article
 500          */
 501         public function getArticle() {
 502                 return $this->mArticle;
 503         }
 504
 505         /**
 506          * @since 1.28
 507          * @return IContextSource
 508          */
 509         public function getContext() {
 510                 return $this->context;
 511         }
 512
 513         /**
 514          * @since 1.19
 515          * @return Title
 516          */
 517         public function getTitle() {
 518                 return $this->mTitle;
 519         }
 520
 521         /**
 522          * Set the context Title object
 523          *
 524          * @param Title|null $title Title object or null
 525          */
 526         public function setContextTitle( $title ) {
 527                 $this->mContextTitle = $title;
 528         }
 529
 530         /**
 531          * Get the context title object.
 532          *
 533          * If not set, $wgTitle will be returned, but this is deprecated. This will
 534          * throw an exception.
 535          *
 536          * @return Title
 537          */
 538         public function getContextTitle() {
 539                 if ( is_null( $this->mContextTitle ) ) {
 540                         wfDeprecated( __METHOD__ . ' called with no title set', '1.32' );
 541                         global $wgTitle;
 542                         return $wgTitle;
 543                 } else {
 544                         return $this->mContextTitle;
 545                 }
 546         }
 547
 548         /**
 549          * Returns if the given content model is editable.
 550          *
 551          * @param string $modelId The ID of the content model to test. Use CONTENT_MODEL_XXX constants.
 552          * @return bool
 553          * @throws MWException If $modelId has no known handler
 554          */
 555         public function isSupportedContentModel( $modelId ) {
 556                 return $this->enableApiEditOverride === true ||
 557                         ContentHandler::getForModelID( $modelId )->supportsDirectEditing();
 558         }
 559
 560         /**
 561          * Allow editing of content that supports API direct editing, but not general
 562          * direct editing. Set to false by default.
 563          *
 564          * @param bool $enableOverride
 565          */
 566         public function setApiEditOverride( $enableOverride ) {
 567                 $this->enableApiEditOverride = $enableOverride;
 568         }
 569
 570         /**
 571          * This is the function that gets called for "action=edit". It
 572          * sets up various member variables, then passes execution to
 573          * another function, usually showEditForm()
 574          *
 575          * The edit form is self-submitting, so that when things like
 576          * preview and edit conflicts occur, we get the same form back
 577          * with the extra stuff added.  Only when the final submission
 578          * is made and all is well do we actually save and redirect to
 579          * the newly-edited page.
 580          */
 581         public function edit() {
 582                 // Allow extensions to modify/prevent this form or submission
 583                 if ( !Hooks::run( 'AlternateEdit', [ $this ] ) ) {
 584                         return;
 585                 }
 586
 587                 wfDebug( __METHOD__ . ": enter\n" );
 588
 589                 $request = $this->context->getRequest();
 590                 // If they used redlink=1 and the page exists, redirect to the main article
 591                 if ( $request->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 592                         $this->context->getOutput()->redirect( $this->mTitle->getFullURL() );
 593                         return;
 594                 }
 595
 596                 $this->importFormData( $request );
 597                 $this->firsttime = false;
 598
 599                 if ( wfReadOnly() && $this->save ) {
 600                         // Force preview
 601                         $this->save = false;
 602                         $this->preview = true;
 603                 }
 604
 605                 if ( $this->save ) {
 606                         $this->formtype = 'save';
 607                 } elseif ( $this->preview ) {
 608                         $this->formtype = 'preview';
 609                 } elseif ( $this->diff ) {
 610                         $this->formtype = 'diff';
 611                 } else { # First time through
 612                         $this->firsttime = true;
 613                         if ( $this->previewOnOpen() ) {
 614                                 $this->formtype = 'preview';
 615                         } else {
 616                                 $this->formtype = 'initial';
 617                         }
 618                 }
 619
 620                 $permErrors = $this->getEditPermissionErrors( $this->save ? 'secure' : 'full' );
 621                 if ( $permErrors ) {
 622                         wfDebug( __METHOD__ . ": User can't edit\n" );
 623
 624                         if ( $this->context->getUser()->getBlock() ) {
 625                                 // track block with a cookie if it doesn't exists already
 626                                 MediaWikiServices::getInstance()->getBlockManager()
 627                                         ->trackBlockWithCookie( $this->context->getUser() );
 628
 629                                 // Auto-block user's IP if the account was "hard" blocked
 630                                 if ( !wfReadOnly() ) {
 631                                         DeferredUpdates::addCallableUpdate( function () {
 632                                                 $this->context->getUser()->spreadAnyEditBlock();
 633                                         } );
 634                                 }
 635                         }
 636                         $this->displayPermissionsError( $permErrors );
 637
 638                         return;
 639                 }
 640
 641                 $revision = $this->mArticle->getRevisionFetched();
 642                 // Disallow editing revisions with content models different from the current one
 643                 // Undo edits being an exception in order to allow reverting content model changes.
 644                 if ( $revision
 645                         && $revision->getContentModel() !== $this->contentModel
 646                 ) {
 647                         $prevRev = null;
 648                         if ( $this->undidRev ) {
 649                                 $undidRevObj = Revision::newFromId( $this->undidRev );
 650                                 $prevRev = $undidRevObj ? $undidRevObj->getPrevious() : null;
 651                         }
 652                         if ( !$this->undidRev
 653                                 || !$prevRev
 654                                 || $prevRev->getContentModel() !== $this->contentModel
 655                         ) {
 656                                 $this->displayViewSourcePage(
 657                                         $this->getContentObject(),
 658                                         $this->context->msg(
 659                                                 'contentmodelediterror',
 660                                                 $revision->getContentModel(),
 661                                                 $this->contentModel
 662                                         )->plain()
 663                                 );
 664                                 return;
 665                         }
 666                 }
 667
 668                 $this->isConflict = false;
 669
 670                 # Show applicable editing introductions
 671                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 672                         $this->showIntro();
 673                 }
 674
 675                 # Attempt submission here.  This will check for edit conflicts,
 676                 # and redundantly check for locked database, blocked IPs, etc.
 677                 # that edit() already checked just in case someone tries to sneak
 678                 # in the back door with a hand-edited submission URL.
 679
 680                 if ( $this->formtype == 'save' ) {
 681                         $resultDetails = null;
 682                         $status = $this->attemptSave( $resultDetails );
 683                         if ( !$this->handleStatus( $status, $resultDetails ) ) {
 684                                 return;
 685                         }
 686                 }
 687
 688                 # First time through: get contents, set time for conflict
 689                 # checking, etc.
 690                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 691                         if ( $this->initialiseForm() === false ) {
 692                                 $out = $this->context->getOutput();
 693                                 if ( $out->getRedirect() === '' ) { // mcrundo hack redirects, don't override it
 694                                         $this->noSuchSectionPage();
 695                                 }
 696                                 return;
 697                         }
 698
 699                         if ( !$this->mTitle->getArticleID() ) {
 700                                 Hooks::run( 'EditFormPreloadText', [ &$this->textbox1, &$this->mTitle ] );
 701                         } else {
 702                                 Hooks::run( 'EditFormInitialText', [ $this ] );
 703                         }
 704
 705                 }
 706
 707                 $this->showEditForm();
 708         }
 709
 710         /**
 711          * @param string $rigor Same format as Title::getUserPermissionErrors()
 712          * @return array
 713          */
 714         protected function getEditPermissionErrors( $rigor = 'secure' ) {
 715                 $user = $this->context->getUser();
 716                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $user, $rigor );
 717                 # Can this title be created?
 718                 if ( !$this->mTitle->exists() ) {
 719                         $permErrors = array_merge(
 720                                 $permErrors,
 721                                 wfArrayDiff2(
 722                                         $this->mTitle->getUserPermissionsErrors( 'create', $user, $rigor ),
 723                                         $permErrors
 724                                 )
 725                         );
 726                 }
 727                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 728                 $remove = [];
 729                 foreach ( $permErrors as $error ) {
 730                         if ( ( $this->preview || $this->diff )
 731                                 && (
 732                                         $error[0] == 'blockedtext' ||
 733                                         $error[0] == 'autoblockedtext' ||
 734                                         $error[0] == 'systemblockedtext'
 735                                 )
 736                         ) {
 737                                 $remove[] = $error;
 738                         }
 739                 }
 740                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 741
 742                 return $permErrors;
 743         }
 744
 745         /**
 746          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 747          * but with the following differences:
 748          * - If redlink=1, the user will be redirected to the page
 749          * - If there is content to display or the error occurs while either saving,
 750          *   previewing or showing the difference, it will be a
 751          *   "View source for ..." page displaying the source code after the error message.
 752          *
 753          * @since 1.19
 754          * @param array $permErrors Array of permissions errors, as returned by
 755          *    Title::getUserPermissionsErrors().
 756          * @throws PermissionsError
 757          */
 758         protected function displayPermissionsError( array $permErrors ) {
 759                 $out = $this->context->getOutput();
 760                 if ( $this->context->getRequest()->getBool( 'redlink' ) ) {
 761                         // The edit page was reached via a red link.
 762                         // Redirect to the article page and let them click the edit tab if
 763                         // they really want a permission error.
 764                         $out->redirect( $this->mTitle->getFullURL() );
 765                         return;
 766                 }
 767
 768                 $content = $this->getContentObject();
 769
 770                 # Use the normal message if there's nothing to display
 771                 if ( $this->firsttime && ( !$content || $content->isEmpty() ) ) {
 772                         $action = $this->mTitle->exists() ? 'edit' :
 773                                 ( $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 774                         throw new PermissionsError( $action, $permErrors );
 775                 }
 776
 777                 $this->displayViewSourcePage(
 778                         $content,
 779                         $out->formatPermissionsErrorMessage( $permErrors, 'edit' )
 780                 );
 781         }
 782
 783         /**
 784          * Display a read-only View Source page
 785          * @param Content $content
 786          * @param string $errorMessage additional wikitext error message to display
 787          */
 788         protected function displayViewSourcePage( Content $content, $errorMessage = '' ) {
 789                 $out = $this->context->getOutput();
 790                 Hooks::run( 'EditPage::showReadOnlyForm:initial', [ $this, &$out ] );
 791
 792                 $out->setRobotPolicy( 'noindex,nofollow' );
 793                 $out->setPageTitle( $this->context->msg(
 794                         'viewsource-title',
 795                         $this->getContextTitle()->getPrefixedText()
 796                 ) );
 797                 $out->addBacklinkSubtitle( $this->getContextTitle() );
 798                 $out->addHTML( $this->editFormPageTop );
 799                 $out->addHTML( $this->editFormTextTop );
 800
 801                 if ( $errorMessage !== '' ) {
 802                         $out->addWikiTextAsInterface( $errorMessage );
 803                         $out->addHTML( "<hr />\n" );
 804                 }
 805
 806                 # If the user made changes, preserve them when showing the markup
 807                 # (This happens when a user is blocked during edit, for instance)
 808                 if ( !$this->firsttime ) {
 809                         $text = $this->textbox1;
 810                         $out->addWikiMsg( 'viewyourtext' );
 811                 } else {
 812                         try {
 813                                 $text = $this->toEditText( $content );
 814                         } catch ( MWException $e ) {
 815                                 # Serialize using the default format if the content model is not supported
 816                                 # (e.g. for an old revision with a different model)
 817                                 $text = $content->serialize();
 818                         }
 819                         $out->addWikiMsg( 'viewsourcetext' );
 820                 }
 821
 822                 $out->addHTML( $this->editFormTextBeforeContent );
 823                 $this->showTextbox( $text, 'wpTextbox1', [ 'readonly' ] );
 824                 $out->addHTML( $this->editFormTextAfterContent );
 825
 826                 $out->addHTML( $this->makeTemplatesOnThisPageList( $this->getTemplates() ) );
 827
 828                 $out->addModules( 'mediawiki.action.edit.collapsibleFooter' );
 829
 830                 $out->addHTML( $this->editFormTextBottom );
 831                 if ( $this->mTitle->exists() ) {
 832                         $out->returnToMain( null, $this->mTitle );
 833                 }
 834         }
 835
 836         /**
 837          * Should we show a preview when the edit form is first shown?
 838          *
 839          * @return bool
 840          */
 841         protected function previewOnOpen() {
 842                 $config = $this->context->getConfig();
 843                 $previewOnOpenNamespaces = $config->get( 'PreviewOnOpenNamespaces' );
 844                 $request = $this->context->getRequest();
 845                 if ( $config->get( 'RawHtml' ) ) {
 846                         // If raw HTML is enabled, disable preview on open
 847                         // since it has to be posted with a token for
 848                         // security reasons
 849                         return false;
 850                 }
 851                 if ( $request->getVal( 'preview' ) == 'yes' ) {
 852                         // Explicit override from request
 853                         return true;
 854                 } elseif ( $request->getVal( 'preview' ) == 'no' ) {
 855                         // Explicit override from request
 856                         return false;
 857                 } elseif ( $this->section == 'new' ) {
 858                         // Nothing *to* preview for new sections
 859                         return false;
 860                 } elseif ( ( $request->getCheck( 'preload' ) || $this->mTitle->exists() )
 861                         && $this->context->getUser()->getOption( 'previewonfirst' )
 862                 ) {
 863                         // Standard preference behavior
 864                         return true;
 865                 } elseif ( !$this->mTitle->exists()
 866                         && isset( $previewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 867                         && $previewOnOpenNamespaces[$this->mTitle->getNamespace()]
 868                 ) {
 869                         // Categories are special
 870                         return true;
 871                 } else {
 872                         return false;
 873                 }
 874         }
 875
 876         /**
 877          * Checks whether the user entered a skin name in uppercase,
 878          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 879          *
 880          * @return bool
 881          */
 882         protected function isWrongCaseUserConfigPage() {
 883                 if ( $this->mTitle->isUserConfigPage() ) {
 884                         $name = $this->mTitle->getSkinFromConfigSubpage();
 885                         $skins = array_merge(
 886                                 array_keys( Skin::getSkinNames() ),
 887                                 [ 'common' ]
 888                         );
 889                         return !in_array( $name, $skins )
 890                                 && in_array( strtolower( $name ), $skins );
 891                 } else {
 892                         return false;
 893                 }
 894         }
 895
 896         /**
 897          * Returns whether section editing is supported for the current page.
 898          * Subclasses may override this to replace the default behavior, which is
 899          * to check ContentHandler::supportsSections.
 900          *
 901          * @return bool True if this edit page supports sections, false otherwise.
 902          */
 903         protected function isSectionEditSupported() {
 904                 $contentHandler = ContentHandler::getForTitle( $this->mTitle );
 905                 return $contentHandler->supportsSections();
 906         }
 907
 908         /**
 909          * This function collects the form data and uses it to populate various member variables.
 910          * @param WebRequest &$request
 911          * @throws ErrorPageError
 912          */
 913         public function importFormData( &$request ) {
 914                 # Section edit can come from either the form or a link
 915                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 916
 917                 if ( $this->section !== null && $this->section !== '' && !$this->isSectionEditSupported() ) {
 918                         throw new ErrorPageError( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
 919                 }
 920
 921                 $this->isNew = !$this->mTitle->exists() || $this->section == 'new';
 922
 923                 if ( $request->wasPosted() ) {
 924                         # These fields need to be checked for encoding.
 925                         # Also remove trailing whitespace, but don't remove _initial_
 926                         # whitespace from the text boxes. This may be significant formatting.
 927                         $this->textbox1 = rtrim( $request->getText( 'wpTextbox1' ) );
 928                         if ( !$request->getCheck( 'wpTextbox2' ) ) {
 929                                 // Skip this if wpTextbox2 has input, it indicates that we came
 930                                 // from a conflict page with raw page text, not a custom form
 931                                 // modified by subclasses
 932                                 $textbox1 = $this->importContentFormData( $request );
 933                                 if ( $textbox1 !== null ) {
 934                                         $this->textbox1 = $textbox1;
 935                                 }
 936                         }
 937
 938                         $this->unicodeCheck = $request->getText( 'wpUnicodeCheck' );
 939
 940                         $this->summary = $request->getText( 'wpSummary' );
 941
 942                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 943                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 944                         # section titles.
 945                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 946
 947                         # Treat sectiontitle the same way as summary.
 948                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 949                         # currently doing double duty as both edit summary and section title. Right now this
 950                         # is just to allow API edits to work around this limitation, but this should be
 951                         # incorporated into the actual edit form when EditPage is rewritten (T20654, T28312).
 952                         $this->sectiontitle = $request->getText( 'wpSectionTitle' );
 953                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 954
 955                         $this->edittime = $request->getVal( 'wpEdittime' );
 956                         $this->editRevId = $request->getIntOrNull( 'editRevId' );
 957                         $this->starttime = $request->getVal( 'wpStarttime' );
 958
 959                         $undidRev = $request->getInt( 'wpUndidRevision' );
 960                         if ( $undidRev ) {
 961                                 $this->undidRev = $undidRev;
 962                         }
 963
 964                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 965
 966                         if ( $this->textbox1 === '' && !$request->getCheck( 'wpTextbox1' ) ) {
 967                                 // wpTextbox1 field is missing, possibly due to being "too big"
 968                                 // according to some filter rules such as Suhosin's setting for
 969                                 // suhosin.request.max_value_length (d'oh)
 970                                 $this->incompleteForm = true;
 971                         } else {
 972                                 // If we receive the last parameter of the request, we can fairly
 973                                 // claim the POST request has not been truncated.
 974                                 $this->incompleteForm = !$request->getVal( 'wpUltimateParam' );
 975                         }
 976                         if ( $this->incompleteForm ) {
 977                                 # If the form is incomplete, force to preview.
 978                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 979                                 wfDebug( "POST DATA: " . var_export( $request->getPostValues(), true ) . "\n" );
 980                                 $this->preview = true;
 981                         } else {
 982                                 $this->preview = $request->getCheck( 'wpPreview' );
 983                                 $this->diff = $request->getCheck( 'wpDiff' );
 984
 985                                 // Remember whether a save was requested, so we can indicate
 986                                 // if we forced preview due to session failure.
 987                                 $this->mTriedSave = !$this->preview;
 988
 989                                 if ( $this->tokenOk( $request ) ) {
 990                                         # Some browsers will not report any submit button
 991                                         # if the user hits enter in the comment box.
 992                                         # The unmarked state will be assumed to be a save,
 993                                         # if the form seems otherwise complete.
 994                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 995                                 } elseif ( $this->diff ) {
 996                                         # Failed token check, but only requested "Show Changes".
 997                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 998                                 } else {
 999                                         # Page might be a hack attempt posted from
1000                                         # an external site. Preview instead of saving.
1001                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
1002                                         $this->preview = true;
1003                                 }
1004                         }
1005                         $this->save = !$this->preview && !$this->diff;
1006                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
1007                                 $this->edittime = null;
1008                         }
1009
1010                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
1011                                 $this->starttime = null;
1012                         }
1013
1014                         $this->recreate = $request->getCheck( 'wpRecreate' );
1015
1016                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
1017                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
1018
1019                         $user = $this->context->getUser();
1020                         # Don't force edit summaries when a user is editing their own user or talk page
1021                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK )
1022                                 && $this->mTitle->getText() == $user->getName()
1023                         ) {
1024                                 $this->allowBlankSummary = true;
1025                         } else {
1026                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' )
1027                                         || !$user->getOption( 'forceeditsummary' );
1028                         }
1029
1030                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
1031
1032                         $this->allowBlankArticle = $request->getBool( 'wpIgnoreBlankArticle' );
1033                         $this->allowSelfRedirect = $request->getBool( 'wpIgnoreSelfRedirect' );
1034
1035                         $changeTags = $request->getVal( 'wpChangeTags' );
1036                         if ( is_null( $changeTags ) || $changeTags === '' ) {
1037                                 $this->changeTags = [];
1038                         } else {
1039                                 $this->changeTags = array_filter( array_map( 'trim', explode( ',',
1040                                         $changeTags ) ) );
1041                         }
1042                 } else {
1043                         # Not a posted form? Start with nothing.
1044                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
1045                         $this->textbox1 = '';
1046                         $this->summary = '';
1047                         $this->sectiontitle = '';
1048                         $this->edittime = '';
1049                         $this->editRevId = null;
1050                         $this->starttime = wfTimestampNow();
1051                         $this->edit = false;
1052                         $this->preview = false;
1053                         $this->save = false;
1054                         $this->diff = false;
1055                         $this->minoredit = false;
1056                         // Watch may be overridden by request parameters
1057                         $this->watchthis = $request->getBool( 'watchthis', false );
1058                         $this->recreate = false;
1059
1060                         // When creating a new section, we can preload a section title by passing it as the
1061                         // preloadtitle parameter in the URL (T15100)
1062                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
1063                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
1064                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
1065                                 $this->summary = $request->getVal( 'preloadtitle' );
1066                         } elseif ( $this->section != 'new' && $request->getVal( 'summary' ) !== '' ) {
1067                                 $this->summary = $request->getText( 'summary' );
1068                                 if ( $this->summary !== '' ) {
1069                                         $this->hasPresetSummary = true;
1070                                 }
1071                         }
1072
1073                         if ( $request->getVal( 'minor' ) ) {
1074                                 $this->minoredit = true;
1075                         }
1076                 }
1077
1078                 $this->oldid = $request->getInt( 'oldid' );
1079                 $this->parentRevId = $request->getInt( 'parentRevId' );
1080
1081                 $this->bot = $request->getBool( 'bot', true );
1082                 $this->nosummary = $request->getBool( 'nosummary' );
1083
1084                 // May be overridden by revision.
1085                 $this->contentModel = $request->getText( 'model', $this->contentModel );
1086                 // May be overridden by revision.
1087                 $this->contentFormat = $request->getText( 'format', $this->contentFormat );
1088
1089                 try {
1090                         $handler = ContentHandler::getForModelID( $this->contentModel );
1091                 } catch ( MWUnknownContentModelException $e ) {
1092                         throw new ErrorPageError(
1093                                 'editpage-invalidcontentmodel-title',
1094                                 'editpage-invalidcontentmodel-text',
1095                                 [ wfEscapeWikiText( $this->contentModel ) ]
1096                         );
1097                 }
1098
1099                 if ( !$handler->isSupportedFormat( $this->contentFormat ) ) {
1100                         throw new ErrorPageError(
1101                                 'editpage-notsupportedcontentformat-title',
1102                                 'editpage-notsupportedcontentformat-text',
1103                                 [
1104                                         wfEscapeWikiText( $this->contentFormat ),
1105                                         wfEscapeWikiText( ContentHandler::getLocalizedName( $this->contentModel ) )
1106                                 ]
1107                         );
1108                 }
1109
1110                 /**
1111                  * @todo Check if the desired model is allowed in this namespace, and if
1112                  *   a transition from the page's current model to the new model is
1113                  *   allowed.
1114                  */
1115
1116                 $this->editintro = $request->getText( 'editintro',
1117                         // Custom edit intro for new sections
1118                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
1119
1120                 // Allow extensions to modify form data
1121                 Hooks::run( 'EditPage::importFormData', [ $this, $request ] );
1122         }
1123
1124         /**
1125          * Subpage overridable method for extracting the page content data from the
1126          * posted form to be placed in $this->textbox1, if using customized input
1127          * this method should be overridden and return the page text that will be used
1128          * for saving, preview parsing and so on...
1129          *
1130          * @param WebRequest &$request
1131          * @return string|null
1132          */
1133         protected function importContentFormData( &$request ) {
1134                 return; // Don't do anything, EditPage already extracted wpTextbox1
1135         }
1136
1137         /**
1138          * Initialise form fields in the object
1139          * Called on the first invocation, e.g. when a user clicks an edit link
1140          * @return bool If the requested section is valid
1141          */
1142         public function initialiseForm() {
1143                 $this->edittime = $this->page->getTimestamp();
1144                 $this->editRevId = $this->page->getLatest();
1145
1146                 $content = $this->getContentObject( false ); # TODO: track content object?!
1147                 if ( $content === false ) {
1148                         return false;
1149                 }
1150                 $this->textbox1 = $this->toEditText( $content );
1151
1152                 $user = $this->context->getUser();
1153                 // activate checkboxes if user wants them to be always active
1154                 # Sort out the "watch" checkbox
1155                 if ( $user->getOption( 'watchdefault' ) ) {
1156                         # Watch all edits
1157                         $this->watchthis = true;
1158                 } elseif ( $user->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1159                         # Watch creations
1160                         $this->watchthis = true;
1161                 } elseif ( $user->isWatched( $this->mTitle ) ) {
1162                         # Already watched
1163                         $this->watchthis = true;
1164                 }
1165                 if ( $user->getOption( 'minordefault' ) && !$this->isNew ) {
1166                         $this->minoredit = true;
1167                 }
1168                 if ( $this->textbox1 === false ) {
1169                         return false;
1170                 }
1171                 return true;
1172         }
1173
1174         /**
1175          * @param Content|null $def_content The default value to return
1176          *
1177          * @return Content|null Content on success, $def_content for invalid sections
1178          *
1179          * @since 1.21
1180          */
1181         protected function getContentObject( $def_content = null ) {
1182                 $content = false;
1183
1184                 $user = $this->context->getUser();
1185                 $request = $this->context->getRequest();
1186                 // For message page not locally set, use the i18n message.
1187                 // For other non-existent articles, use preload text if any.
1188                 if ( !$this->mTitle->exists() || $this->section == 'new' ) {
1189                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
1190                                 # If this is a system message, get the default text.
1191                                 $msg = $this->mTitle->getDefaultMessageText();
1192
1193                                 $content = $this->toEditContent( $msg );
1194                         }
1195                         if ( $content === false ) {
1196                                 # If requested, preload some text.
1197                                 $preload = $request->getVal( 'preload',
1198                                         // Custom preload text for new sections
1199                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
1200                                 $params = $request->getArray( 'preloadparams', [] );
1201
1202                                 $content = $this->getPreloadedContent( $preload, $params );
1203                         }
1204                 // For existing pages, get text based on "undo" or section parameters.
1205                 } elseif ( $this->section != '' ) {
1206                         // Get section edit text (returns $def_text for invalid sections)
1207                         $orig = $this->getOriginalContent( $user );
1208                         $content = $orig ? $orig->getSection( $this->section ) : null;
1209
1210                         if ( !$content ) {
1211                                 $content = $def_content;
1212                         }
1213                 } else {
1214                         $undoafter = $request->getInt( 'undoafter' );
1215                         $undo = $request->getInt( 'undo' );
1216
1217                         if ( $undo > 0 && $undoafter > 0 ) {
1218                                 $undorev = Revision::newFromId( $undo );
1219                                 $oldrev = Revision::newFromId( $undoafter );
1220                                 $undoMsg = null;
1221
1222                                 # Sanity check, make sure it's the right page,
1223                                 # the revisions exist and they were not deleted.
1224                                 # Otherwise, $content will be left as-is.
1225                                 if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
1226                                         !$undorev->isDeleted( RevisionRecord::DELETED_TEXT ) &&
1227                                         !$oldrev->isDeleted( RevisionRecord::DELETED_TEXT )
1228                                 ) {
1229                                         if ( WikiPage::hasDifferencesOutsideMainSlot( $undorev, $oldrev )
1230                                                 || !$this->isSupportedContentModel( $oldrev->getContentModel() )
1231                                         ) {
1232                                                 // Hack for undo while EditPage can't handle multi-slot editing
1233                                                 $this->context->getOutput()->redirect( $this->mTitle->getFullURL( [
1234                                                         'action' => 'mcrundo',
1235                                                         'undo' => $undo,
1236                                                         'undoafter' => $undoafter,
1237                                                 ] ) );
1238                                                 return false;
1239                                         } else {
1240                                                 $content = $this->page->getUndoContent( $undorev, $oldrev );
1241
1242                                                 if ( $content === false ) {
1243                                                         # Warn the user that something went wrong
1244                                                         $undoMsg = 'failure';
1245                                                 }
1246                                         }
1247
1248                                         if ( $undoMsg === null ) {
1249                                                 $oldContent = $this->page->getContent( RevisionRecord::RAW );
1250                                                 $popts = ParserOptions::newFromUserAndLang(
1251                                                         $user, MediaWikiServices::getInstance()->getContentLanguage() );
1252                                                 $newContent = $content->preSaveTransform( $this->mTitle, $user, $popts );
1253                                                 if ( $newContent->getModel() !== $oldContent->getModel() ) {
1254                                                         // The undo may change content
1255                                                         // model if its reverting the top
1256                                                         // edit. This can result in
1257                                                         // mismatched content model/format.
1258                                                         $this->contentModel = $newContent->getModel();
1259                                                         $this->contentFormat = $oldrev->getContentFormat();
1260                                                 }
1261
1262                                                 if ( $newContent->equals( $oldContent ) ) {
1263                                                         # Tell the user that the undo results in no change,
1264                                                         # i.e. the revisions were already undone.
1265                                                         $undoMsg = 'nochange';
1266                                                         $content = false;
1267                                                 } else {
1268                                                         # Inform the user of our success and set an automatic edit summary
1269                                                         $undoMsg = 'success';
1270
1271                                                         # If we just undid one rev, use an autosummary
1272                                                         $firstrev = $oldrev->getNext();
1273                                                         if ( $firstrev && $firstrev->getId() == $undo ) {
1274                                                                 $userText = $undorev->getUserText();
1275                                                                 if ( $userText === '' ) {
1276                                                                         $undoSummary = $this->context->msg(
1277                                                                                 'undo-summary-username-hidden',
1278                                                                                 $undo
1279                                                                         )->inContentLanguage()->text();
1280                                                                 } else {
1281                                                                         $undoSummary = $this->context->msg(
1282                                                                                 'undo-summary',
1283                                                                                 $undo,
1284                                                                                 $userText
1285                                                                         )->inContentLanguage()->text();
1286                                                                 }
1287                                                                 if ( $this->summary === '' ) {
1288                                                                         $this->summary = $undoSummary;
1289                                                                 } else {
1290                                                                         $this->summary = $undoSummary . $this->context->msg( 'colon-separator' )
1291                                                                                 ->inContentLanguage()->text() . $this->summary;
1292                                                                 }
1293                                                                 $this->undidRev = $undo;
1294                                                         }
1295                                                         $this->formtype = 'diff';
1296                                                 }
1297                                         }
1298                                 } else {
1299                                         // Failed basic sanity checks.
1300                                         // Older revisions may have been removed since the link
1301                                         // was created, or we may simply have got bogus input.
1302                                         $undoMsg = 'norev';
1303                                 }
1304
1305                                 $out = $this->context->getOutput();
1306                                 // Messages: undo-success, undo-failure, undo-main-slot-only, undo-norev,
1307                                 // undo-nochange.
1308                                 $class = ( $undoMsg == 'success' ? '' : 'error ' ) . "mw-undo-{$undoMsg}";
1309                                 $this->editFormPageTop .= Html::rawElement(
1310                                         'div', [ 'class' => $class ],
1311                                         $out->parseAsInterface(
1312                                                 $this->context->msg( 'undo-' . $undoMsg )->plain()
1313                                         )
1314                                 );
1315                         }
1316
1317                         if ( $content === false ) {
1318                                 // Hack for restoring old revisions while EditPage
1319                                 // can't handle multi-slot editing.
1320
1321                                 $curRevision = $this->page->getRevision();
1322                                 $oldRevision = $this->mArticle->getRevisionFetched();
1323
1324                                 if ( $curRevision
1325                                         && $oldRevision
1326                                         && $curRevision->getId() !== $oldRevision->getId()
1327                                         && ( WikiPage::hasDifferencesOutsideMainSlot( $oldRevision, $curRevision )
1328                                                 || !$this->isSupportedContentModel( $oldRevision->getContentModel() ) )
1329                                 ) {
1330                                         $this->context->getOutput()->redirect(
1331                                                 $this->mTitle->getFullURL(
1332                                                         [
1333                                                                 'action' => 'mcrrestore',
1334                                                                 'restore' => $oldRevision->getId(),
1335                                                         ]
1336                                                 )
1337                                         );
1338
1339                                         return false;
1340                                 }
1341                         }
1342
1343                         if ( $content === false ) {
1344                                 $content = $this->getOriginalContent( $user );
1345                         }
1346                 }
1347
1348                 return $content;
1349         }
1350
1351         /**
1352          * Get the content of the wanted revision, without section extraction.
1353          *
1354          * The result of this function can be used to compare user's input with
1355          * section replaced in its context (using WikiPage::replaceSectionAtRev())
1356          * to the original text of the edit.
1357          *
1358          * This differs from Article::getContent() that when a missing revision is
1359          * encountered the result will be null and not the
1360          * 'missing-revision' message.
1361          *
1362          * @since 1.19
1363          * @param User $user The user to get the revision for
1364          * @return Content|null
1365          */
1366         private function getOriginalContent( User $user ) {
1367                 if ( $this->section == 'new' ) {
1368                         return $this->getCurrentContent();
1369                 }
1370                 $revision = $this->mArticle->getRevisionFetched();
1371                 if ( $revision === null ) {
1372                         $handler = ContentHandler::getForModelID( $this->contentModel );
1373                         return $handler->makeEmptyContent();
1374                 }
1375                 $content = $revision->getContent( RevisionRecord::FOR_THIS_USER, $user );
1376                 return $content;
1377         }
1378
1379         /**
1380          * Get the edit's parent revision ID
1381          *
1382          * The "parent" revision is the ancestor that should be recorded in this
1383          * page's revision history.  It is either the revision ID of the in-memory
1384          * article content, or in the case of a 3-way merge in order to rebase
1385          * across a recoverable edit conflict, the ID of the newer revision to
1386          * which we have rebased this page.
1387          *
1388          * @since 1.27
1389          * @return int Revision ID
1390          */
1391         public function getParentRevId() {
1392                 if ( $this->parentRevId ) {
1393                         return $this->parentRevId;
1394                 } else {
1395                         return $this->mArticle->getRevIdFetched();
1396                 }
1397         }
1398
1399         /**
1400          * Get the current content of the page. This is basically similar to
1401          * WikiPage::getContent( Revision::RAW ) except that when the page doesn't exist an empty
1402          * content object is returned instead of null.
1403          *
1404          * @since 1.21
1405          * @return Content
1406          */
1407         protected function getCurrentContent() {
1408                 $rev = $this->page->getRevision();
1409                 $content = $rev ? $rev->getContent( RevisionRecord::RAW ) : null;
1410
1411                 if ( $content === false || $content === null ) {
1412                         $handler = ContentHandler::getForModelID( $this->contentModel );
1413                         return $handler->makeEmptyContent();
1414                 } elseif ( !$this->undidRev ) {
1415                         // Content models should always be the same since we error
1416                         // out if they are different before this point (in ->edit()).
1417                         // The exception being, during an undo, the current revision might
1418                         // differ from the prior revision.
1419                         $logger = LoggerFactory::getInstance( 'editpage' );
1420                         if ( $this->contentModel !== $rev->getContentModel() ) {
1421                                 $logger->warning( "Overriding content model from current edit {prev} to {new}", [
1422                                         'prev' => $this->contentModel,
1423                                         'new' => $rev->getContentModel(),
1424                                         'title' => $this->getTitle()->getPrefixedDBkey(),
1425                                         'method' => __METHOD__
1426                                 ] );
1427                                 $this->contentModel = $rev->getContentModel();
1428                         }
1429
1430                         // Given that the content models should match, the current selected
1431                         // format should be supported.
1432                         if ( !$content->isSupportedFormat( $this->contentFormat ) ) {
1433                                 $logger->warning( "Current revision content format unsupported. Overriding {prev} to {new}", [
1434
1435                                         'prev' => $this->contentFormat,
1436                                         'new' => $rev->getContentFormat(),
1437                                         'title' => $this->getTitle()->getPrefixedDBkey(),
1438                                         'method' => __METHOD__
1439                                 ] );
1440                                 $this->contentFormat = $rev->getContentFormat();
1441                         }
1442                 }
1443                 return $content;
1444         }
1445
1446         /**
1447          * Use this method before edit() to preload some content into the edit box
1448          *
1449          * @param Content $content
1450          *
1451          * @since 1.21
1452          */
1453         public function setPreloadedContent( Content $content ) {
1454                 $this->mPreloadContent = $content;
1455         }
1456
1457         /**
1458          * Get the contents to be preloaded into the box, either set by
1459          * an earlier setPreloadText() or by loading the given page.
1460          *
1461          * @param string $preload Representing the title to preload from.
1462          * @param array $params Parameters to use (interface-message style) in the preloaded text
1463          *
1464          * @return Content
1465          *
1466          * @since 1.21
1467          */
1468         protected function getPreloadedContent( $preload, $params = [] ) {
1469                 if ( !empty( $this->mPreloadContent ) ) {
1470                         return $this->mPreloadContent;
1471                 }
1472
1473                 $handler = ContentHandler::getForModelID( $this->contentModel );
1474
1475                 if ( $preload === '' ) {
1476                         return $handler->makeEmptyContent();
1477                 }
1478
1479                 $user = $this->context->getUser();
1480                 $title = Title::newFromText( $preload );
1481
1482                 # Check for existence to avoid getting MediaWiki:Noarticletext
1483                 if ( !$this->isPageExistingAndViewable( $title, $user ) ) {
1484                         // TODO: somehow show a warning to the user!
1485                         return $handler->makeEmptyContent();
1486                 }
1487
1488                 $page = WikiPage::factory( $title );
1489                 if ( $page->isRedirect() ) {
1490                         $title = $page->getRedirectTarget();
1491                         # Same as before
1492                         if ( !$this->isPageExistingAndViewable( $title, $user ) ) {
1493                                 // TODO: somehow show a warning to the user!
1494                                 return $handler->makeEmptyContent();
1495                         }
1496                         $page = WikiPage::factory( $title );
1497                 }
1498
1499                 $parserOptions = ParserOptions::newFromUser( $user );
1500                 $content = $page->getContent( RevisionRecord::RAW );
1501
1502                 if ( !$content ) {
1503                         // TODO: somehow show a warning to the user!
1504                         return $handler->makeEmptyContent();
1505                 }
1506
1507                 if ( $content->getModel() !== $handler->getModelID() ) {
1508                         $converted = $content->convert( $handler->getModelID() );
1509
1510                         if ( !$converted ) {
1511                                 // TODO: somehow show a warning to the user!
1512                                 wfDebug( "Attempt to preload incompatible content: " .
1513                                         "can't convert " . $content->getModel() .
1514                                         " to " . $handler->getModelID() );
1515
1516                                 return $handler->makeEmptyContent();
1517                         }
1518
1519                         $content = $converted;
1520                 }
1521
1522                 return $content->preloadTransform( $title, $parserOptions, $params );
1523         }
1524
1525         /**
1526          * Verify if a given title exists and the given user is allowed to view it
1527          *
1528          * @see EditPage::getPreloadedContent()
1529          * @param Title|null $title
1530          * @param User $user
1531          * @return bool
1532          * @throws Exception
1533          */
1534         private function isPageExistingAndViewable( $title, User $user ) {
1535                 $permissionManager = MediaWikiServices::getInstance()->getPermissionManager();
1536
1537                 return $title && $title->exists() && $permissionManager->userCan( 'read', $user, $title );
1538         }
1539
1540         /**
1541          * Make sure the form isn't faking a user's credentials.
1542          *
1543          * @param WebRequest &$request
1544          * @return bool
1545          * @private
1546          */
1547         public function tokenOk( &$request ) {
1548                 $token = $request->getVal( 'wpEditToken' );
1549                 $user = $this->context->getUser();
1550                 $this->mTokenOk = $user->matchEditToken( $token );
1551                 $this->mTokenOkExceptSuffix = $user->matchEditTokenNoSuffix( $token );
1552                 return $this->mTokenOk;
1553         }
1554
1555         /**
1556          * Sets post-edit cookie indicating the user just saved a particular revision.
1557          *
1558          * This uses a temporary cookie for each revision ID so separate saves will never
1559          * interfere with each other.
1560          *
1561          * Article::view deletes the cookie on server-side after the redirect and
1562          * converts the value to the global JavaScript variable wgPostEdit.
1563          *
1564          * If the variable were set on the server, it would be cached, which is unwanted
1565          * since the post-edit state should only apply to the load right after the save.
1566          *
1567          * @param int $statusValue The status value (to check for new article status)
1568          */
1569         protected function setPostEditCookie( $statusValue ) {
1570                 $revisionId = $this->page->getLatest();
1571                 $postEditKey = self::POST_EDIT_COOKIE_KEY_PREFIX . $revisionId;
1572
1573                 $val = 'saved';
1574                 if ( $statusValue == self::AS_SUCCESS_NEW_ARTICLE ) {
1575                         $val = 'created';
1576                 } elseif ( $this->oldid ) {
1577                         $val = 'restored';
1578                 }
1579
1580                 $response = $this->context->getRequest()->response();
1581                 $response->setCookie( $postEditKey, $val, time() + self::POST_EDIT_COOKIE_DURATION );
1582         }
1583
1584         /**
1585          * Attempt submission
1586          * @param array|bool &$resultDetails See docs for $result in internalAttemptSave
1587          * @throws UserBlockedError|ReadOnlyError|ThrottledError|PermissionsError
1588          * @return Status The resulting status object.
1589          */
1590         public function attemptSave( &$resultDetails = false ) {
1591                 // TODO: MCR: treat $this->minoredit like $this->bot and check isAllowed( 'minoredit' )!
1592                 // Also, add $this->autopatrol like $this->bot and check isAllowed( 'autopatrol' )!
1593                 // This is needed since PageUpdater no longer checks these rights!
1594
1595                 // Allow bots to exempt some edits from bot flagging
1596                 $bot = $this->context->getUser()->isAllowed( 'bot' ) && $this->bot;
1597                 $status = $this->internalAttemptSave( $resultDetails, $bot );
1598
1599                 Hooks::run( 'EditPage::attemptSave:after', [ $this, $status, $resultDetails ] );
1600
1601                 return $status;
1602         }
1603
1604         /**
1605          * Log when a page was successfully saved after the edit conflict view
1606          */
1607         private function incrementResolvedConflicts() {
1608                 if ( $this->context->getRequest()->getText( 'mode' ) !== 'conflict' ) {
1609                         return;
1610                 }
1611
1612                 $this->getEditConflictHelper()->incrementResolvedStats();
1613         }
1614
1615         /**
1616          * Handle status, such as after attempt save
1617          *
1618          * @param Status $status
1619          * @param array|bool $resultDetails
1620          *
1621          * @throws ErrorPageError
1622          * @return bool False, if output is done, true if rest of the form should be displayed
1623          */
1624         private function handleStatus( Status $status, $resultDetails ) {
1625                 /**
1626                  * @todo FIXME: once the interface for internalAttemptSave() is made
1627                  *   nicer, this should use the message in $status
1628                  */
1629                 if ( $status->value == self::AS_SUCCESS_UPDATE
1630                         || $status->value == self::AS_SUCCESS_NEW_ARTICLE
1631                 ) {
1632                         $this->incrementResolvedConflicts();
1633
1634                         $this->didSave = true;
1635                         if ( !$resultDetails['nullEdit'] ) {
1636                                 $this->setPostEditCookie( $status->value );
1637                         }
1638                 }
1639
1640                 $out = $this->context->getOutput();
1641
1642                 // "wpExtraQueryRedirect" is a hidden input to modify
1643                 // after save URL and is not used by actual edit form
1644                 $request = $this->context->getRequest();
1645                 $extraQueryRedirect = $request->getVal( 'wpExtraQueryRedirect' );
1646
1647                 switch ( $status->value ) {
1648                         case self::AS_HOOK_ERROR_EXPECTED:
1649                         case self::AS_CONTENT_TOO_BIG:
1650                         case self::AS_ARTICLE_WAS_DELETED:
1651                         case self::AS_CONFLICT_DETECTED:
1652                         case self::AS_SUMMARY_NEEDED:
1653                         case self::AS_TEXTBOX_EMPTY:
1654                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
1655                         case self::AS_END:
1656                         case self::AS_BLANK_ARTICLE:
1657                         case self::AS_SELF_REDIRECT:
1658                                 return true;
1659
1660                         case self::AS_HOOK_ERROR:
1661                                 return false;
1662
1663                         case self::AS_CANNOT_USE_CUSTOM_MODEL:
1664                         case self::AS_PARSE_ERROR:
1665                         case self::AS_UNICODE_NOT_SUPPORTED:
1666                                 $out->wrapWikiTextAsInterface( 'error', $status->getWikiText() );
1667                                 return true;
1668
1669                         case self::AS_SUCCESS_NEW_ARTICLE:
1670                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
1671                                 if ( $extraQueryRedirect ) {
1672                                         if ( $query !== '' ) {
1673                                                 $query .= '&';
1674                                         }
1675                                         $query .= $extraQueryRedirect;
1676                                 }
1677                                 $anchor = $resultDetails['sectionanchor'] ?? '';
1678                                 $out->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
1679                                 return false;
1680
1681                         case self::AS_SUCCESS_UPDATE:
1682                                 $extraQuery = '';
1683                                 $sectionanchor = $resultDetails['sectionanchor'];
1684
1685                                 // Give extensions a chance to modify URL query on update
1686                                 Hooks::run(
1687                                         'ArticleUpdateBeforeRedirect',
1688                                         [ $this->mArticle, &$sectionanchor, &$extraQuery ]
1689                                 );
1690
1691                                 if ( $resultDetails['redirect'] ) {
1692                                         if ( $extraQuery !== '' ) {
1693                                                 $extraQuery = '&' . $extraQuery;
1694                                         }
1695                                         $extraQuery = 'redirect=no' . $extraQuery;
1696                                 }
1697                                 if ( $extraQueryRedirect ) {
1698                                         if ( $extraQuery !== '' ) {
1699                                                 $extraQuery .= '&';
1700                                         }
1701                                         $extraQuery .= $extraQueryRedirect;
1702                                 }
1703
1704                                 $out->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
1705                                 return false;
1706
1707                         case self::AS_SPAM_ERROR:
1708                                 $this->spamPageWithContent( $resultDetails['spam'] );
1709                                 return false;
1710
1711                         case self::AS_BLOCKED_PAGE_FOR_USER:
1712                                 throw new UserBlockedError( $this->context->getUser()->getBlock() );
1713
1714                         case self::AS_IMAGE_REDIRECT_ANON:
1715                         case self::AS_IMAGE_REDIRECT_LOGGED:
1716                                 throw new PermissionsError( 'upload' );
1717
1718                         case self::AS_READ_ONLY_PAGE_ANON:
1719                         case self::AS_READ_ONLY_PAGE_LOGGED:
1720                                 throw new PermissionsError( 'edit' );
1721
1722                         case self::AS_READ_ONLY_PAGE:
1723                                 throw new ReadOnlyError;
1724
1725                         case self::AS_RATE_LIMITED:
1726                                 throw new ThrottledError();
1727
1728                         case self::AS_NO_CREATE_PERMISSION:
1729                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
1730                                 throw new PermissionsError( $permission );
1731
1732                         case self::AS_NO_CHANGE_CONTENT_MODEL:
1733                                 throw new PermissionsError( 'editcontentmodel' );
1734
1735                         default:
1736                                 // We don't recognize $status->value. The only way that can happen
1737                                 // is if an extension hook aborted from inside ArticleSave.
1738                                 // Render the status object into $this->hookError
1739                                 // FIXME this sucks, we should just use the Status object throughout
1740                                 $this->hookError = '<div class="error">' . "\n" . $status->getWikiText() .
1741                                         '</div>';
1742                                 return true;
1743                 }
1744         }
1745
1746         /**
1747          * Run hooks that can filter edits just before they get saved.
1748          *
1749          * @param Content $content The Content to filter.
1750          * @param Status $status For reporting the outcome to the caller
1751          * @param User $user The user performing the edit
1752          *
1753          * @return bool
1754          */
1755         protected function runPostMergeFilters( Content $content, Status $status, User $user ) {
1756                 // Run old style post-section-merge edit filter
1757                 if ( $this->hookError != '' ) {
1758                         # ...or the hook could be expecting us to produce an error
1759                         $status->fatal( 'hookaborted' );
1760                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1761                         return false;
1762                 }
1763
1764                 // Run new style post-section-merge edit filter
1765                 if ( !Hooks::run( 'EditFilterMergedContent',
1766                                 [ $this->context, $content, $status, $this->summary,
1767                                 $user, $this->minoredit ] )
1768                 ) {
1769                         # Error messages etc. could be handled within the hook...
1770                         if ( $status->isGood() ) {
1771                                 $status->fatal( 'hookaborted' );
1772                                 // Not setting $this->hookError here is a hack to allow the hook
1773                                 // to cause a return to the edit page without $this->hookError
1774                                 // being set. This is used by ConfirmEdit to display a captcha
1775                                 // without any error message cruft.
1776                         } else {
1777                                 $this->hookError = $this->formatStatusErrors( $status );
1778                         }
1779                         // Use the existing $status->value if the hook set it
1780                         if ( !$status->value ) {
1781                                 $status->value = self::AS_HOOK_ERROR;
1782                         }
1783                         return false;
1784                 } elseif ( !$status->isOK() ) {
1785                         # ...or the hook could be expecting us to produce an error
1786                         // FIXME this sucks, we should just use the Status object throughout
1787                         $this->hookError = $this->formatStatusErrors( $status );
1788                         $status->fatal( 'hookaborted' );
1789                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1790                         return false;
1791                 }
1792
1793                 return true;
1794         }
1795
1796         /**
1797          * Wrap status errors in an errorbox for increased visibility
1798          *
1799          * @param Status $status
1800          * @return string Wikitext
1801          */
1802         private function formatStatusErrors( Status $status ) {
1803                 $errmsg = $status->getWikiText(
1804                         'edit-error-short',
1805                         'edit-error-long',
1806                         $this->context->getLanguage()
1807                 );
1808                 return <<<ERROR
1809 <div class="errorbox">
1810 {$errmsg}
1811 </div>
1812 <br clear="all" />
1813 ERROR;
1814         }
1815
1816         /**
1817          * Return the summary to be used for a new section.
1818          *
1819          * @param string $sectionanchor Set to the section anchor text
1820          * @return string
1821          */
1822         private function newSectionSummary( &$sectionanchor = null ) {
1823                 if ( $this->sectiontitle !== '' ) {
1824                         $sectionanchor = $this->guessSectionName( $this->sectiontitle );
1825                         // If no edit summary was specified, create one automatically from the section
1826                         // title and have it link to the new section. Otherwise, respect the summary as
1827                         // passed.
1828                         if ( $this->summary === '' ) {
1829                                 $cleanSectionTitle = MediaWikiServices::getInstance()->getParser()
1830                                         ->stripSectionName( $this->sectiontitle );
1831                                 return $this->context->msg( 'newsectionsummary' )
1832                                         ->plaintextParams( $cleanSectionTitle )->inContentLanguage()->text();
1833                         }
1834                 } elseif ( $this->summary !== '' ) {
1835                         $sectionanchor = $this->guessSectionName( $this->summary );
1836                         # This is a new section, so create a link to the new section
1837                         # in the revision summary.
1838                         $cleanSummary = MediaWikiServices::getInstance()->getParser()
1839                                 ->stripSectionName( $this->summary );
1840                         return $this->context->msg( 'newsectionsummary' )
1841                                 ->plaintextParams( $cleanSummary )->inContentLanguage()->text();
1842                 }
1843                 return $this->summary;
1844         }
1845
1846         /**
1847          * Attempt submission (no UI)
1848          *
1849          * @param array &$result Array to add statuses to, currently with the
1850          *   possible keys:
1851          *   - spam (string): Spam string from content if any spam is detected by
1852          *     matchSpamRegex.
1853          *   - sectionanchor (string): Section anchor for a section save.
1854          *   - nullEdit (bool): Set if doEditContent is OK.  True if null edit,
1855          *     false otherwise.
1856          *   - redirect (bool): Set if doEditContent is OK. True if resulting
1857          *     revision is a redirect.
1858          * @param bool $bot True if edit is being made under the bot right.
1859          *
1860          * @return Status Status object, possibly with a message, but always with
1861          *   one of the AS_* constants in $status->value,
1862          *
1863          * @todo FIXME: This interface is TERRIBLE, but hard to get rid of due to
1864          *   various error display idiosyncrasies. There are also lots of cases
1865          *   where error metadata is set in the object and retrieved later instead
1866          *   of being returned, e.g. AS_CONTENT_TOO_BIG and
1867          *   AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some
1868          * time.
1869          */
1870         public function internalAttemptSave( &$result, $bot = false ) {
1871                 $status = Status::newGood();
1872                 $user = $this->context->getUser();
1873
1874                 if ( !Hooks::run( 'EditPage::attemptSave', [ $this ] ) ) {
1875                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
1876                         $status->fatal( 'hookaborted' );
1877                         $status->value = self::AS_HOOK_ERROR;
1878                         return $status;
1879                 }
1880
1881                 if ( $this->unicodeCheck !== self::UNICODE_CHECK ) {
1882                         $status->fatal( 'unicode-support-fail' );
1883                         $status->value = self::AS_UNICODE_NOT_SUPPORTED;
1884                         return $status;
1885                 }
1886
1887                 $request = $this->context->getRequest();
1888                 $spam = $request->getText( 'wpAntispam' );
1889                 if ( $spam !== '' ) {
1890                         wfDebugLog(
1891                                 'SimpleAntiSpam',
1892                                 $user->getName() .
1893                                 ' editing "' .
1894                                 $this->mTitle->getPrefixedText() .
1895                                 '" submitted bogus field "' .
1896                                 $spam .
1897                                 '"'
1898                         );
1899                         $status->fatal( 'spamprotectionmatch', false );
1900                         $status->value = self::AS_SPAM_ERROR;
1901                         return $status;
1902                 }
1903
1904                 try {
1905                         # Construct Content object
1906                         $textbox_content = $this->toEditContent( $this->textbox1 );
1907                 } catch ( MWContentSerializationException $ex ) {
1908                         $status->fatal(
1909                                 'content-failed-to-parse',
1910                                 $this->contentModel,
1911                                 $this->contentFormat,
1912                                 $ex->getMessage()
1913                         );
1914                         $status->value = self::AS_PARSE_ERROR;
1915                         return $status;
1916                 }
1917
1918                 # Check image redirect
1919                 if ( $this->mTitle->getNamespace() == NS_FILE &&
1920                         $textbox_content->isRedirect() &&
1921                         !$user->isAllowed( 'upload' )
1922                 ) {
1923                                 $code = $user->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
1924                                 $status->setResult( false, $code );
1925
1926                                 return $status;
1927                 }
1928
1929                 # Check for spam
1930                 $match = self::matchSummarySpamRegex( $this->summary );
1931                 if ( $match === false && $this->section == 'new' ) {
1932                         # $wgSpamRegex is enforced on this new heading/summary because, unlike
1933                         # regular summaries, it is added to the actual wikitext.
1934                         if ( $this->sectiontitle !== '' ) {
1935                                 # This branch is taken when the API is used with the 'sectiontitle' parameter.
1936                                 $match = self::matchSpamRegex( $this->sectiontitle );
1937                         } else {
1938                                 # This branch is taken when the "Add Topic" user interface is used, or the API
1939                                 # is used with the 'summary' parameter.
1940                                 $match = self::matchSpamRegex( $this->summary );
1941                         }
1942                 }
1943                 if ( $match === false ) {
1944                         $match = self::matchSpamRegex( $this->textbox1 );
1945                 }
1946                 if ( $match !== false ) {
1947                         $result['spam'] = $match;
1948                         $ip = $request->getIP();
1949                         $pdbk = $this->mTitle->getPrefixedDBkey();
1950                         $match = str_replace( "\n", '', $match );
1951                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
1952                         $status->fatal( 'spamprotectionmatch', $match );
1953                         $status->value = self::AS_SPAM_ERROR;
1954                         return $status;
1955                 }
1956                 if ( !Hooks::run(
1957                         'EditFilter',
1958                         [ $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ] )
1959                 ) {
1960                         # Error messages etc. could be handled within the hook...
1961                         $status->fatal( 'hookaborted' );
1962                         $status->value = self::AS_HOOK_ERROR;
1963                         return $status;
1964                 } elseif ( $this->hookError != '' ) {
1965                         # ...or the hook could be expecting us to produce an error
1966                         $status->fatal( 'hookaborted' );
1967                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1968                         return $status;
1969                 }
1970
1971                 if ( $user->isBlockedFrom( $this->mTitle ) ) {
1972                         // Auto-block user's IP if the account was "hard" blocked
1973                         if ( !wfReadOnly() ) {
1974                                 $user->spreadAnyEditBlock();
1975                         }
1976                         # Check block state against master, thus 'false'.
1977                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1978                         return $status;
1979                 }
1980
1981                 $this->contentLength = strlen( $this->textbox1 );
1982                 $config = $this->context->getConfig();
1983                 $maxArticleSize = $config->get( 'MaxArticleSize' );
1984                 if ( $this->contentLength > $maxArticleSize * 1024 ) {
1985                         // Error will be displayed by showEditForm()
1986                         $this->tooBig = true;
1987                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1988                         return $status;
1989                 }
1990
1991                 if ( !$user->isAllowed( 'edit' ) ) {
1992                         if ( $user->isAnon() ) {
1993                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1994                                 return $status;
1995                         } else {
1996                                 $status->fatal( 'readonlytext' );
1997                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1998                                 return $status;
1999                         }
2000                 }
2001
2002                 $permissionManager = MediaWikiServices::getInstance()->getPermissionManager();
2003
2004                 $changingContentModel = false;
2005                 if ( $this->contentModel !== $this->mTitle->getContentModel() ) {
2006                         if ( !$config->get( 'ContentHandlerUseDB' ) ) {
2007                                 $status->fatal( 'editpage-cannot-use-custom-model' );
2008                                 $status->value = self::AS_CANNOT_USE_CUSTOM_MODEL;
2009                                 return $status;
2010                         } elseif ( !$user->isAllowed( 'editcontentmodel' ) ) {
2011                                 $status->setResult( false, self::AS_NO_CHANGE_CONTENT_MODEL );
2012                                 return $status;
2013                         }
2014                         // Make sure the user can edit the page under the new content model too
2015                         $titleWithNewContentModel = clone $this->mTitle;
2016                         $titleWithNewContentModel->setContentModel( $this->contentModel );
2017
2018                         $canEditModel = $permissionManager->userCan(
2019                                 'editcontentmodel',
2020                                 $user,
2021                                 $titleWithNewContentModel
2022                         );
2023
2024                         if (
2025                                 !$canEditModel
2026                                 || !$permissionManager->userCan( 'edit', $user, $titleWithNewContentModel )
2027                         ) {
2028                                 $status->setResult( false, self::AS_NO_CHANGE_CONTENT_MODEL );
2029
2030                                 return $status;
2031                         }
2032
2033                         $changingContentModel = true;
2034                         $oldContentModel = $this->mTitle->getContentModel();
2035                 }
2036
2037                 if ( $this->changeTags ) {
2038                         $changeTagsStatus = ChangeTags::canAddTagsAccompanyingChange(
2039                                 $this->changeTags, $user );
2040                         if ( !$changeTagsStatus->isOK() ) {
2041                                 $changeTagsStatus->value = self::AS_CHANGE_TAG_ERROR;
2042                                 return $changeTagsStatus;
2043                         }
2044                 }
2045
2046                 if ( wfReadOnly() ) {
2047                         $status->fatal( 'readonlytext' );
2048                         $status->value = self::AS_READ_ONLY_PAGE;
2049                         return $status;
2050                 }
2051                 if ( $user->pingLimiter() || $user->pingLimiter( 'linkpurge', 0 )
2052                         || ( $changingContentModel && $user->pingLimiter( 'editcontentmodel' ) )
2053                 ) {
2054                         $status->fatal( 'actionthrottledtext' );
2055                         $status->value = self::AS_RATE_LIMITED;
2056                         return $status;
2057                 }
2058
2059                 # If the article has been deleted while editing, don't save it without
2060                 # confirmation
2061                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
2062                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
2063                         return $status;
2064                 }
2065
2066                 # Load the page data from the master. If anything changes in the meantime,
2067                 # we detect it by using page_latest like a token in a 1 try compare-and-swap.
2068                 $this->page->loadPageData( 'fromdbmaster' );
2069                 $new = !$this->page->exists();
2070
2071                 if ( $new ) {
2072                         // Late check for create permission, just in case *PARANOIA*
2073                         if ( !$permissionManager->userCan( 'create', $user, $this->mTitle ) ) {
2074                                 $status->fatal( 'nocreatetext' );
2075                                 $status->value = self::AS_NO_CREATE_PERMISSION;
2076                                 wfDebug( __METHOD__ . ": no create permission\n" );
2077                                 return $status;
2078                         }
2079
2080                         // Don't save a new page if it's blank or if it's a MediaWiki:
2081                         // message with content equivalent to default (allow empty pages
2082                         // in this case to disable messages, see T52124)
2083                         $defaultMessageText = $this->mTitle->getDefaultMessageText();
2084                         if ( $this->mTitle->getNamespace() === NS_MEDIAWIKI && $defaultMessageText !== false ) {
2085                                 $defaultText = $defaultMessageText;
2086                         } else {
2087                                 $defaultText = '';
2088                         }
2089
2090                         if ( !$this->allowBlankArticle && $this->textbox1 === $defaultText ) {
2091                                 $this->blankArticle = true;
2092                                 $status->fatal( 'blankarticle' );
2093                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
2094                                 return $status;
2095                         }
2096
2097                         if ( !$this->runPostMergeFilters( $textbox_content, $status, $user ) ) {
2098                                 return $status;
2099                         }
2100
2101                         $content = $textbox_content;
2102
2103                         $result['sectionanchor'] = '';
2104                         if ( $this->section == 'new' ) {
2105                                 if ( $this->sectiontitle !== '' ) {
2106                                         // Insert the section title above the content.
2107                                         $content = $content->addSectionHeader( $this->sectiontitle );
2108                                 } elseif ( $this->summary !== '' ) {
2109                                         // Insert the section title above the content.
2110                                         $content = $content->addSectionHeader( $this->summary );
2111                                 }
2112                                 $this->summary = $this->newSectionSummary( $result['sectionanchor'] );
2113                         }
2114
2115                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
2116
2117                 } else { # not $new
2118
2119                         # Article exists. Check for edit conflict.
2120
2121                         $this->page->clear(); # Force reload of dates, etc.
2122                         $timestamp = $this->page->getTimestamp();
2123                         $latest = $this->page->getLatest();
2124
2125                         wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
2126
2127                         // An edit conflict is detected if the current revision is different from the
2128                         // revision that was current when editing was initiated on the client.
2129                         // This is checked based on the timestamp and revision ID.
2130                         // TODO: the timestamp based check can probably go away now.
2131                         if ( $timestamp != $this->edittime
2132                                 || ( $this->editRevId !== null && $this->editRevId != $latest )
2133                         ) {
2134                                 $this->isConflict = true;
2135                                 if ( $this->section == 'new' ) {
2136                                         if ( $this->page->getUserText() == $user->getName() &&
2137                                                 $this->page->getComment() == $this->newSectionSummary()
2138                                         ) {
2139                                                 // Probably a duplicate submission of a new comment.
2140                                                 // This can happen when CDN resends a request after
2141                                                 // a timeout but the first one actually went through.
2142                                                 wfDebug( __METHOD__
2143                                                         . ": duplicate new section submission; trigger edit conflict!\n" );
2144                                         } else {
2145                                                 // New comment; suppress conflict.
2146                                                 $this->isConflict = false;
2147                                                 wfDebug( __METHOD__ . ": conflict suppressed; new section\n" );
2148                                         }
2149                                 } elseif ( $this->section == ''
2150                                         && Revision::userWasLastToEdit(
2151                                                 DB_MASTER, $this->mTitle->getArticleID(),
2152                                                 $user->getId(), $this->edittime
2153                                         )
2154                                 ) {
2155                                         # Suppress edit conflict with self, except for section edits where merging is required.
2156                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
2157                                         $this->isConflict = false;
2158                                 }
2159                         }
2160
2161                         // If sectiontitle is set, use it, otherwise use the summary as the section title.
2162                         if ( $this->sectiontitle !== '' ) {
2163                                 $sectionTitle = $this->sectiontitle;
2164                         } else {
2165                                 $sectionTitle = $this->summary;
2166                         }
2167
2168                         $content = null;
2169
2170                         if ( $this->isConflict ) {
2171                                 wfDebug( __METHOD__
2172                                         . ": conflict! getting section '{$this->section}' for time '{$this->edittime}'"
2173                                         . " (id '{$this->editRevId}') (article time '{$timestamp}')\n" );
2174                                 // @TODO: replaceSectionAtRev() with base ID (not prior current) for ?oldid=X case
2175                                 // ...or disable section editing for non-current revisions (not exposed anyway).
2176                                 if ( $this->editRevId !== null ) {
2177                                         $content = $this->page->replaceSectionAtRev(
2178                                                 $this->section,
2179                                                 $textbox_content,
2180                                                 $sectionTitle,
2181                                                 $this->editRevId
2182                                         );
2183                                 } else {
2184                                         $content = $this->page->replaceSectionContent(
2185                                                 $this->section,
2186                                                 $textbox_content,
2187                                                 $sectionTitle,
2188                                                 $this->edittime
2189                                         );
2190                                 }
2191                         } else {
2192                                 wfDebug( __METHOD__ . ": getting section '{$this->section}'\n" );
2193                                 $content = $this->page->replaceSectionContent(
2194                                         $this->section,
2195                                         $textbox_content,
2196                                         $sectionTitle
2197                                 );
2198                         }
2199
2200                         if ( is_null( $content ) ) {
2201                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
2202                                 $this->isConflict = true;
2203                                 $content = $textbox_content; // do not try to merge here!
2204                         } elseif ( $this->isConflict ) {
2205                                 # Attempt merge
2206                                 if ( $this->mergeChangesIntoContent( $content ) ) {
2207                                         // Successful merge! Maybe we should tell the user the good news?
2208                                         $this->isConflict = false;
2209                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
2210                                 } else {
2211                                         $this->section = '';
2212                                         $this->textbox1 = ContentHandler::getContentText( $content );
2213                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
2214                                 }
2215                         }
2216
2217                         if ( $this->isConflict ) {
2218                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
2219                                 return $status;
2220                         }
2221
2222                         if ( !$this->runPostMergeFilters( $content, $status, $user ) ) {
2223                                 return $status;
2224                         }
2225
2226                         if ( $this->section == 'new' ) {
2227                                 // Handle the user preference to force summaries here
2228                                 if ( !$this->allowBlankSummary && trim( $this->summary ) == '' ) {
2229                                         $this->missingSummary = true;
2230                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
2231                                         $status->value = self::AS_SUMMARY_NEEDED;
2232                                         return $status;
2233                                 }
2234
2235                                 // Do not allow the user to post an empty comment
2236                                 if ( $this->textbox1 == '' ) {
2237                                         $this->missingComment = true;
2238                                         $status->fatal( 'missingcommenttext' );
2239                                         $status->value = self::AS_TEXTBOX_EMPTY;
2240                                         return $status;
2241                                 }
2242                         } elseif ( !$this->allowBlankSummary
2243                                 && !$content->equals( $this->getOriginalContent( $user ) )
2244                                 && !$content->isRedirect()
2245                                 && md5( $this->summary ) == $this->autoSumm
2246                         ) {
2247                                 $this->missingSummary = true;
2248                                 $status->fatal( 'missingsummary' );
2249                                 $status->value = self::AS_SUMMARY_NEEDED;
2250                                 return $status;
2251                         }
2252
2253                         # All's well
2254                         $sectionanchor = '';
2255                         if ( $this->section == 'new' ) {
2256                                 $this->summary = $this->newSectionSummary( $sectionanchor );
2257                         } elseif ( $this->section != '' ) {
2258                                 # Try to get a section anchor from the section source, redirect
2259                                 # to edited section if header found.
2260                                 # XXX: Might be better to integrate this into Article::replaceSectionAtRev
2261                                 # for duplicate heading checking and maybe parsing.
2262                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
2263                                 # We can't deal with anchors, includes, html etc in the header for now,
2264                                 # headline would need to be parsed to improve this.
2265                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
2266                                         $sectionanchor = $this->guessSectionName( $matches[2] );
2267                                 }
2268                         }
2269                         $result['sectionanchor'] = $sectionanchor;
2270
2271                         // Save errors may fall down to the edit form, but we've now
2272                         // merged the section into full text. Clear the section field
2273                         // so that later submission of conflict forms won't try to
2274                         // replace that into a duplicated mess.
2275                         $this->textbox1 = $this->toEditText( $content );
2276                         $this->section = '';
2277
2278                         $status->value = self::AS_SUCCESS_UPDATE;
2279                 }
2280
2281                 if ( !$this->allowSelfRedirect
2282                         && $content->isRedirect()
2283                         && $content->getRedirectTarget()->equals( $this->getTitle() )
2284                 ) {
2285                         // If the page already redirects to itself, don't warn.
2286                         $currentTarget = $this->getCurrentContent()->getRedirectTarget();
2287                         if ( !$currentTarget || !$currentTarget->equals( $this->getTitle() ) ) {
2288                                 $this->selfRedirect = true;
2289                                 $status->fatal( 'selfredirect' );
2290                                 $status->value = self::AS_SELF_REDIRECT;
2291                                 return $status;
2292                         }
2293                 }
2294
2295                 // Check for length errors again now that the section is merged in
2296                 $this->contentLength = strlen( $this->toEditText( $content ) );
2297                 if ( $this->contentLength > $maxArticleSize * 1024 ) {
2298                         $this->tooBig = true;
2299                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
2300                         return $status;
2301                 }
2302
2303                 $flags = EDIT_AUTOSUMMARY |
2304                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
2305                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
2306                         ( $bot ? EDIT_FORCE_BOT : 0 );
2307
2308                 $doEditStatus = $this->page->doEditContent(
2309                         $content,
2310                         $this->summary,
2311                         $flags,
2312                         false,
2313                         $user,
2314                         $content->getDefaultFormat(),
2315                         $this->changeTags,
2316                         $this->undidRev
2317                 );
2318
2319                 if ( !$doEditStatus->isOK() ) {
2320                         // Failure from doEdit()
2321                         // Show the edit conflict page for certain recognized errors from doEdit(),
2322                         // but don't show it for errors from extension hooks
2323                         $errors = $doEditStatus->getErrorsArray();
2324                         if ( in_array( $errors[0][0],
2325                                         [ 'edit-gone-missing', 'edit-conflict', 'edit-already-exists' ] )
2326                         ) {
2327                                 $this->isConflict = true;
2328                                 // Destroys data doEdit() put in $status->value but who cares
2329                                 $doEditStatus->value = self::AS_END;
2330                         }
2331                         return $doEditStatus;
2332                 }
2333
2334                 $result['nullEdit'] = $doEditStatus->hasMessage( 'edit-no-change' );
2335                 if ( $result['nullEdit'] ) {
2336                         // We don't know if it was a null edit until now, so increment here
2337                         $user->pingLimiter( 'linkpurge' );
2338                 }
2339                 $result['redirect'] = $content->isRedirect();
2340
2341                 $this->updateWatchlist();
2342
2343                 // If the content model changed, add a log entry
2344                 if ( $changingContentModel ) {
2345                         $this->addContentModelChangeLogEntry(
2346                                 $user,
2347                                 $new ? false : $oldContentModel,
2348                                 $this->contentModel,
2349                                 $this->summary
2350                         );
2351                 }
2352
2353                 return $status;
2354         }
2355
2356         /**
2357          * @param User $user
2358          * @param string|false $oldModel false if the page is being newly created
2359          * @param string $newModel
2360          * @param string $reason
2361          */
2362         protected function addContentModelChangeLogEntry( User $user, $oldModel, $newModel, $reason ) {
2363                 $new = $oldModel === false;
2364                 $log = new ManualLogEntry( 'contentmodel', $new ? 'new' : 'change' );
2365                 $log->setPerformer( $user );
2366                 $log->setTarget( $this->mTitle );
2367                 $log->setComment( $reason );
2368                 $log->setParameters( [
2369                         '4::oldmodel' => $oldModel,
2370                         '5::newmodel' => $newModel
2371                 ] );
2372                 $logid = $log->insert();
2373                 $log->publish( $logid );
2374         }
2375
2376         /**
2377          * Register the change of watch status
2378          */
2379         protected function updateWatchlist() {
2380                 $user = $this->context->getUser();
2381                 if ( !$user->isLoggedIn() ) {
2382                         return;
2383                 }
2384
2385                 $title = $this->mTitle;
2386                 $watch = $this->watchthis;
2387                 // Do this in its own transaction to reduce contention...
2388                 DeferredUpdates::addCallableUpdate( function () use ( $user, $title, $watch ) {
2389                         if ( $watch == $user->isWatched( $title, User::IGNORE_USER_RIGHTS ) ) {
2390                                 return; // nothing to change
2391                         }
2392                         WatchAction::doWatchOrUnwatch( $watch, $title, $user );
2393                 } );
2394         }
2395
2396         /**
2397          * Attempts to do 3-way merge of edit content with a base revision
2398          * and current content, in case of edit conflict, in whichever way appropriate
2399          * for the content type.
2400          *
2401          * @since 1.21
2402          *
2403          * @param Content $editContent
2404          *
2405          * @return bool
2406          */
2407         private function mergeChangesIntoContent( &$editContent ) {
2408                 $db = wfGetDB( DB_MASTER );
2409
2410                 // This is the revision that was current at the time editing was initiated on the client,
2411                 // even if the edit was based on an old revision.
2412                 $baseRevision = $this->getBaseRevision();
2413                 $baseContent = $baseRevision ? $baseRevision->getContent() : null;
2414
2415                 if ( is_null( $baseContent ) ) {
2416                         return false;
2417                 }
2418
2419                 // The current state, we want to merge updates into it
2420                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
2421                 $currentContent = $currentRevision ? $currentRevision->getContent() : null;
2422
2423                 if ( is_null( $currentContent ) ) {
2424                         return false;
2425                 }
2426
2427                 $handler = ContentHandler::getForModelID( $baseContent->getModel() );
2428
2429                 $result = $handler->merge3( $baseContent, $editContent, $currentContent );
2430
2431                 if ( $result ) {
2432                         $editContent = $result;
2433                         // Update parentRevId to what we just merged.
2434                         $this->parentRevId = $currentRevision->getId();
2435                         return true;
2436                 }
2437
2438                 return false;
2439         }
2440
2441         /**
2442          * Returns the revision that was current at the time editing was initiated on the client,
2443          * even if the edit was based on an old revision.
2444          *
2445          * @warning this method is very poorly named. If the user opened the form with ?oldid=X,
2446          *        one might think of X as the "base revision", which is NOT what this returns,
2447          *        see oldid for that. One might further assume that this corresponds to the $baseRevId
2448          *        parameter of WikiPage::doEditContent, which is not the case either.
2449          *        getExpectedParentRevision() would perhaps be a better name.
2450          *
2451          * @return Revision|null Current version when editing was initiated on the client
2452          */
2453         public function getBaseRevision() {
2454                 if ( !$this->mBaseRevision ) {
2455                         $db = wfGetDB( DB_MASTER );
2456                         $this->mBaseRevision = $this->editRevId
2457                                 ? Revision::newFromId( $this->editRevId, Revision::READ_LATEST )
2458                                 : Revision::loadFromTimestamp( $db, $this->mTitle, $this->edittime );
2459                 }
2460                 return $this->mBaseRevision;
2461         }
2462
2463         /**
2464          * Check given input text against $wgSpamRegex, and return the text of the first match.
2465          *
2466          * @param string $text
2467          *
2468          * @return string|bool Matching string or false
2469          */
2470         public static function matchSpamRegex( $text ) {
2471                 global $wgSpamRegex;
2472                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
2473                 $regexes = (array)$wgSpamRegex;
2474                 return self::matchSpamRegexInternal( $text, $regexes );
2475         }
2476
2477         /**
2478          * Check given input text against $wgSummarySpamRegex, and return the text of the first match.
2479          *
2480          * @param string $text
2481          *
2482          * @return string|bool Matching string or false
2483          */
2484         public static function matchSummarySpamRegex( $text ) {
2485                 global $wgSummarySpamRegex;
2486                 $regexes = (array)$wgSummarySpamRegex;
2487                 return self::matchSpamRegexInternal( $text, $regexes );
2488         }
2489
2490         /**
2491          * @param string $text
2492          * @param array $regexes
2493          * @return bool|string
2494          */
2495         protected static function matchSpamRegexInternal( $text, $regexes ) {
2496                 foreach ( $regexes as $regex ) {
2497                         $matches = [];
2498                         if ( preg_match( $regex, $text, $matches ) ) {
2499                                 return $matches[0];
2500                         }
2501                 }
2502                 return false;
2503         }
2504
2505         public function setHeaders() {
2506                 $out = $this->context->getOutput();
2507
2508                 $out->addModules( 'mediawiki.action.edit' );
2509                 $out->addModuleStyles( 'mediawiki.action.edit.styles' );
2510                 $out->addModuleStyles( 'mediawiki.editfont.styles' );
2511
2512                 $user = $this->context->getUser();
2513
2514                 if ( $user->getOption( 'uselivepreview' ) ) {
2515                         $out->addModules( 'mediawiki.action.edit.preview' );
2516                 }
2517
2518                 if ( $user->getOption( 'useeditwarning' ) ) {
2519                         $out->addModules( 'mediawiki.action.edit.editWarning' );
2520                 }
2521
2522                 # Enabled article-related sidebar, toplinks, etc.
2523                 $out->setArticleRelated( true );
2524
2525                 $contextTitle = $this->getContextTitle();
2526                 if ( $this->isConflict ) {
2527                         $msg = 'editconflict';
2528                 } elseif ( $contextTitle->exists() && $this->section != '' ) {
2529                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
2530                 } else {
2531                         $msg = $contextTitle->exists()
2532                                 || ( $contextTitle->getNamespace() == NS_MEDIAWIKI
2533                                         && $contextTitle->getDefaultMessageText() !== false
2534                                 )
2535                                 ? 'editing'
2536                                 : 'creating';
2537                 }
2538
2539                 # Use the title defined by DISPLAYTITLE magic word when present
2540                 # NOTE: getDisplayTitle() returns HTML while getPrefixedText() returns plain text.
2541                 #       setPageTitle() treats the input as wikitext, which should be safe in either case.
2542                 $displayTitle = isset( $this->mParserOutput ) ? $this->mParserOutput->getDisplayTitle() : false;
2543                 if ( $displayTitle === false ) {
2544                         $displayTitle = $contextTitle->getPrefixedText();
2545                 } else {
2546                         $out->setDisplayTitle( $displayTitle );
2547                 }
2548                 $out->setPageTitle( $this->context->msg( $msg, $displayTitle ) );
2549
2550                 $config = $this->context->getConfig();
2551
2552                 # Transmit the name of the message to JavaScript for live preview
2553                 # Keep Resources.php/mediawiki.action.edit.preview in sync with the possible keys
2554                 $out->addJsConfigVars( [
2555                         'wgEditMessage' => $msg,
2556                         'wgAjaxEditStash' => $config->get( 'AjaxEditStash' ),
2557                 ] );
2558
2559                 // Add whether to use 'save' or 'publish' messages to JavaScript for post-edit, other
2560                 // editors, etc.
2561                 $out->addJsConfigVars(
2562                         'wgEditSubmitButtonLabelPublish',
2563                         $config->get( 'EditSubmitButtonLabelPublish' )
2564                 );
2565         }
2566
2567         /**
2568          * Show all applicable editing introductions
2569          */
2570         protected function showIntro() {
2571                 if ( $this->suppressIntro ) {
2572                         return;
2573                 }
2574
2575                 $out = $this->context->getOutput();
2576                 $namespace = $this->mTitle->getNamespace();
2577
2578                 if ( $namespace == NS_MEDIAWIKI ) {
2579                         # Show a warning if editing an interface message
2580                         $out->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
2581                         # If this is a default message (but not css, json, or js),
2582                         # show a hint that it is translatable on translatewiki.net
2583                         if (
2584                                 !$this->mTitle->hasContentModel( CONTENT_MODEL_CSS )
2585                                 && !$this->mTitle->hasContentModel( CONTENT_MODEL_JSON )
2586                                 && !$this->mTitle->hasContentModel( CONTENT_MODEL_JAVASCRIPT )
2587                         ) {
2588                                 $defaultMessageText = $this->mTitle->getDefaultMessageText();
2589                                 if ( $defaultMessageText !== false ) {
2590                                         $out->wrapWikiMsg( "<div class='mw-translateinterface'>\n$1\n</div>",
2591                                                 'translateinterface' );
2592                                 }
2593                         }
2594                 } elseif ( $namespace == NS_FILE ) {
2595                         # Show a hint to shared repo
2596                         $file = MediaWikiServices::getInstance()->getRepoGroup()->findFile( $this->mTitle );
2597                         if ( $file && !$file->isLocal() ) {
2598                                 $descUrl = $file->getDescriptionUrl();
2599                                 # there must be a description url to show a hint to shared repo
2600                                 if ( $descUrl ) {
2601                                         if ( !$this->mTitle->exists() ) {
2602                                                 $out->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-create\">\n$1\n</div>", [
2603                                                                         'sharedupload-desc-create', $file->getRepo()->getDisplayName(), $descUrl
2604                                                 ] );
2605                                         } else {
2606                                                 $out->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-edit\">\n$1\n</div>", [
2607                                                                         'sharedupload-desc-edit', $file->getRepo()->getDisplayName(), $descUrl
2608                                                 ] );
2609                                         }
2610                                 }
2611                         }
2612                 }
2613
2614                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
2615                 # Show log extract when the user is currently blocked
2616                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
2617                         $username = explode( '/', $this->mTitle->getText(), 2 )[0];
2618                         $user = User::newFromName( $username, false /* allow IP users */ );
2619                         $ip = User::isIP( $username );
2620                         $block = DatabaseBlock::newFromTarget( $user, $user );
2621                         if ( !( $user && $user->isLoggedIn() ) && !$ip ) { # User does not exist
2622                                 $out->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
2623                                         [ 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ] );
2624                         } elseif (
2625                                 !is_null( $block ) &&
2626                                 $block->getType() != DatabaseBlock::TYPE_AUTO &&
2627                                 ( $block->isSitewide() || $user->isBlockedFrom( $this->mTitle ) )
2628                         ) {
2629                                 // Show log extract if the user is sitewide blocked or is partially
2630                                 // blocked and not allowed to edit their user page or user talk page
2631                                 LogEventsList::showLogExtract(
2632                                         $out,
2633                                         'block',
2634                                         MediaWikiServices::getInstance()->getNamespaceInfo()->
2635                                                 getCanonicalName( NS_USER ) . ':' . $block->getTarget(),
2636                                         '',
2637                                         [
2638                                                 'lim' => 1,
2639                                                 'showIfEmpty' => false,
2640                                                 'msgKey' => [
2641                                                         'blocked-notice-logextract',
2642                                                         $user->getName() # Support GENDER in notice
2643                                                 ]
2644                                         ]
2645                                 );
2646                         }
2647                 }
2648                 # Try to add a custom edit intro, or use the standard one if this is not possible.
2649                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
2650                         $helpLink = wfExpandUrl( Skin::makeInternalOrExternalUrl(
2651                                 $this->context->msg( 'helppage' )->inContentLanguage()->text()
2652                         ) );
2653                         if ( $this->context->getUser()->isLoggedIn() ) {
2654                                 $out->wrapWikiMsg(
2655                                         // Suppress the external link icon, consider the help url an internal one
2656                                         "<div class=\"mw-newarticletext plainlinks\">\n$1\n</div>",
2657                                         [
2658                                                 'newarticletext',
2659                                                 $helpLink
2660                                         ]
2661                                 );
2662                         } else {
2663                                 $out->wrapWikiMsg(
2664                                         // Suppress the external link icon, consider the help url an internal one
2665                                         "<div class=\"mw-newarticletextanon plainlinks\">\n$1\n</div>",
2666                                         [
2667                                                 'newarticletextanon',
2668                                                 $helpLink
2669                                         ]
2670                                 );
2671                         }
2672                 }
2673                 # Give a notice if the user is editing a deleted/moved page...
2674                 if ( !$this->mTitle->exists() ) {
2675                         $dbr = wfGetDB( DB_REPLICA );
2676
2677                         LogEventsList::showLogExtract( $out, [ 'delete', 'move' ], $this->mTitle,
2678                                 '',
2679                                 [
2680                                         'lim' => 10,
2681                                         'conds' => [ 'log_action != ' . $dbr->addQuotes( 'revision' ) ],
2682                                         'showIfEmpty' => false,
2683                                         'msgKey' => [ 'recreate-moveddeleted-warn' ]
2684                                 ]
2685                         );
2686                 }
2687         }
2688
2689         /**
2690          * Attempt to show a custom editing introduction, if supplied
2691          *
2692          * @return bool
2693          */
2694         protected function showCustomIntro() {
2695                 if ( $this->editintro ) {
2696                         $title = Title::newFromText( $this->editintro );
2697                         if ( $this->isPageExistingAndViewable( $title, $this->context->getUser() ) ) {
2698                                 // Added using template syntax, to take <noinclude>'s into account.
2699                                 $this->context->getOutput()->addWikiTextAsContent(
2700                                         '<div class="mw-editintro">{{:' . $title->getFullText() . '}}</div>',
2701                                         /*linestart*/true,
2702                                         $this->mTitle
2703                                 );
2704                                 return true;
2705                         }
2706                 }
2707                 return false;
2708         }
2709
2710         /**
2711          * Gets an editable textual representation of $content.
2712          * The textual representation can be turned by into a Content object by the
2713          * toEditContent() method.
2714          *
2715          * If $content is null or false or a string, $content is returned unchanged.
2716          *
2717          * If the given Content object is not of a type that can be edited using
2718          * the text base EditPage, an exception will be raised. Set
2719          * $this->allowNonTextContent to true to allow editing of non-textual
2720          * content.
2721          *
2722          * @param Content|null|bool|string $content
2723          * @return string The editable text form of the content.
2724          *
2725          * @throws MWException If $content is not an instance of TextContent and
2726          *   $this->allowNonTextContent is not true.
2727          */
2728         protected function toEditText( $content ) {
2729                 if ( $content === null || $content === false || is_string( $content ) ) {
2730                         return $content;
2731                 }
2732
2733                 if ( !$this->isSupportedContentModel( $content->getModel() ) ) {
2734                         throw new MWException( 'This content model is not supported: ' . $content->getModel() );
2735                 }
2736
2737                 return $content->serialize( $this->contentFormat );
2738         }
2739
2740         /**
2741          * Turns the given text into a Content object by unserializing it.
2742          *
2743          * If the resulting Content object is not of a type that can be edited using
2744          * the text base EditPage, an exception will be raised. Set
2745          * $this->allowNonTextContent to true to allow editing of non-textual
2746          * content.
2747          *
2748          * @param string|null|bool $text Text to unserialize
2749          * @return Content|bool|null The content object created from $text. If $text was false
2750          *   or null, then false or null will be returned instead.
2751          *
2752          * @throws MWException If unserializing the text results in a Content
2753          *   object that is not an instance of TextContent and
2754          *   $this->allowNonTextContent is not true.
2755          */
2756         protected function toEditContent( $text ) {
2757                 if ( $text === false || $text === null ) {
2758                         return $text;
2759                 }
2760
2761                 $content = ContentHandler::makeContent( $text, $this->getTitle(),
2762                         $this->contentModel, $this->contentFormat );
2763
2764                 if ( !$this->isSupportedContentModel( $content->getModel() ) ) {
2765                         throw new MWException( 'This content model is not supported: ' . $content->getModel() );
2766                 }
2767
2768                 return $content;
2769         }
2770
2771         /**
2772          * Send the edit form and related headers to OutputPage
2773          * @param callable|null $formCallback That takes an OutputPage parameter; will be called
2774          *     during form output near the top, for captchas and the like.
2775          *
2776          * The $formCallback parameter is deprecated since MediaWiki 1.25. Please
2777          * use the EditPage::showEditForm:fields hook instead.
2778          */
2779         public function showEditForm( $formCallback = null ) {
2780                 # need to parse the preview early so that we know which templates are used,
2781                 # otherwise users with "show preview after edit box" will get a blank list
2782                 # we parse this near the beginning so that setHeaders can do the title
2783                 # setting work instead of leaving it in getPreviewText
2784                 $previewOutput = '';
2785                 if ( $this->formtype == 'preview' ) {
2786                         $previewOutput = $this->getPreviewText();
2787                 }
2788
2789                 $out = $this->context->getOutput();
2790
2791                 // Avoid PHP 7.1 warning of passing $this by reference
2792                 $editPage = $this;
2793                 Hooks::run( 'EditPage::showEditForm:initial', [ &$editPage, &$out ] );
2794
2795                 $this->setHeaders();
2796
2797                 $this->addTalkPageText();
2798                 $this->addEditNotices();
2799
2800                 if ( !$this->isConflict &&
2801                         $this->section != '' &&
2802                         !$this->isSectionEditSupported() ) {
2803                         // We use $this->section to much before this and getVal('wgSection') directly in other places
2804                         // at this point we can't reset $this->section to '' to fallback to non-section editing.
2805                         // Someone is welcome to try refactoring though
2806                         $out->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
2807                         return;
2808                 }
2809
2810                 $this->showHeader();
2811
2812                 $out->addHTML( $this->editFormPageTop );
2813
2814                 $user = $this->context->getUser();
2815                 if ( $user->getOption( 'previewontop' ) ) {
2816                         $this->displayPreviewArea( $previewOutput, true );
2817                 }
2818
2819                 $out->addHTML( $this->editFormTextTop );
2820
2821                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype !== 'save' ) {
2822                         $out->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
2823                                 'deletedwhileediting' );
2824                 }
2825
2826                 // @todo add EditForm plugin interface and use it here!
2827                 //       search for textarea1 and textarea2, and allow EditForm to override all uses.
2828                 $out->addHTML( Html::openElement(
2829                         'form',
2830                         [
2831                                 'class' => 'mw-editform',
2832                                 'id' => self::EDITFORM_ID,
2833                                 'name' => self::EDITFORM_ID,
2834                                 'method' => 'post',
2835                                 'action' => $this->getActionURL( $this->getContextTitle() ),
2836                                 'enctype' => 'multipart/form-data'
2837                         ]
2838                 ) );
2839
2840                 if ( is_callable( $formCallback ) ) {
2841                         wfWarn( 'The $formCallback parameter to ' . __METHOD__ . 'is deprecated' );
2842                         call_user_func_array( $formCallback, [ &$out ] );
2843                 }
2844
2845                 // Add a check for Unicode support
2846                 $out->addHTML( Html::hidden( 'wpUnicodeCheck', self::UNICODE_CHECK ) );
2847
2848                 // Add an empty field to trip up spambots
2849                 $out->addHTML(
2850                         Xml::openElement( 'div', [ 'id' => 'antispam-container', 'style' => 'display: none;' ] )
2851                         . Html::rawElement(
2852                                 'label',
2853                                 [ 'for' => 'wpAntispam' ],
2854                                 $this->context->msg( 'simpleantispam-label' )->parse()
2855                         )
2856                         . Xml::element(
2857                                 'input',
2858                                 [
2859                                         'type' => 'text',
2860                                         'name' => 'wpAntispam',
2861                                         'id' => 'wpAntispam',
2862                                         'value' => ''
2863                                 ]
2864                         )
2865                         . Xml::closeElement( 'div' )
2866                 );
2867
2868                 // Avoid PHP 7.1 warning of passing $this by reference
2869                 $editPage = $this;
2870                 Hooks::run( 'EditPage::showEditForm:fields', [ &$editPage, &$out ] );
2871
2872                 // Put these up at the top to ensure they aren't lost on early form submission
2873                 $this->showFormBeforeText();
2874
2875                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
2876                         $username = $this->lastDelete->user_name;
2877                         $comment = CommentStore::getStore()
2878                                 ->getComment( 'log_comment', $this->lastDelete )->text;
2879
2880                         // It is better to not parse the comment at all than to have templates expanded in the middle
2881                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
2882                         $key = $comment === ''
2883                                 ? 'confirmrecreate-noreason'
2884                                 : 'confirmrecreate';
2885                         $out->addHTML(
2886                                 '<div class="mw-confirm-recreate">' .
2887                                         $this->context->msg( $key, $username, "<nowiki>$comment</nowiki>" )->parse() .
2888                                 Xml::checkLabel( $this->context->msg( 'recreate' )->text(), 'wpRecreate', 'wpRecreate', false,
2889                                         [ 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' ]
2890                                 ) .
2891                                 '</div>'
2892                         );
2893                 }
2894
2895                 # When the summary is hidden, also hide them on preview/show changes
2896                 if ( $this->nosummary ) {
2897                         $out->addHTML( Html::hidden( 'nosummary', true ) );
2898                 }
2899
2900                 # If a blank edit summary was previously provided, and the appropriate
2901                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
2902                 # user being bounced back more than once in the event that a summary
2903                 # is not required.
2904                 # ####
2905                 # For a bit more sophisticated detection of blank summaries, hash the
2906                 # automatic one and pass that in the hidden field wpAutoSummary.
2907                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
2908                         $out->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
2909                 }
2910
2911                 if ( $this->undidRev ) {
2912                         $out->addHTML( Html::hidden( 'wpUndidRevision', $this->undidRev ) );
2913                 }
2914
2915                 if ( $this->selfRedirect ) {
2916                         $out->addHTML( Html::hidden( 'wpIgnoreSelfRedirect', true ) );
2917                 }
2918
2919                 if ( $this->hasPresetSummary ) {
2920                         // If a summary has been preset using &summary= we don't want to prompt for
2921                         // a different summary. Only prompt for a summary if the summary is blanked.
2922                         // (T19416)
2923                         $this->autoSumm = md5( '' );
2924                 }
2925
2926                 $autosumm = $this->autoSumm !== '' ? $this->autoSumm : md5( $this->summary );
2927                 $out->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
2928
2929                 $out->addHTML( Html::hidden( 'oldid', $this->oldid ) );
2930                 $out->addHTML( Html::hidden( 'parentRevId', $this->getParentRevId() ) );
2931
2932                 $out->addHTML( Html::hidden( 'format', $this->contentFormat ) );
2933                 $out->addHTML( Html::hidden( 'model', $this->contentModel ) );
2934
2935                 $out->enableOOUI();
2936
2937                 if ( $this->section == 'new' ) {
2938                         $this->showSummaryInput( true, $this->summary );
2939                         $out->addHTML( $this->getSummaryPreview( true, $this->summary ) );
2940                 }
2941
2942                 $out->addHTML( $this->editFormTextBeforeContent );
2943                 if ( $this->isConflict ) {
2944                         // In an edit conflict, we turn textbox2 into the user's text,
2945                         // and textbox1 into the stored version
2946                         $this->textbox2 = $this->textbox1;
2947
2948                         $content = $this->getCurrentContent();
2949                         $this->textbox1 = $this->toEditText( $content );
2950
2951                         $editConflictHelper = $this->getEditConflictHelper();
2952                         $editConflictHelper->setTextboxes( $this->textbox2, $this->textbox1 );
2953                         $editConflictHelper->setContentModel( $this->contentModel );
2954                         $editConflictHelper->setContentFormat( $this->contentFormat );
2955                         $out->addHTML( $editConflictHelper->getEditFormHtmlBeforeContent() );
2956                 }
2957
2958                 if ( !$this->mTitle->isUserConfigPage() ) {
2959                         $out->addHTML( self::getEditToolbar() );
2960                 }
2961
2962                 if ( $this->blankArticle ) {
2963                         $out->addHTML( Html::hidden( 'wpIgnoreBlankArticle', true ) );
2964                 }
2965
2966                 if ( $this->isConflict ) {
2967                         // In an edit conflict bypass the overridable content form method
2968                         // and fallback to the raw wpTextbox1 since editconflicts can't be
2969                         // resolved between page source edits and custom ui edits using the
2970                         // custom edit ui.
2971                         $conflictTextBoxAttribs = [];
2972                         if ( $this->wasDeletedSinceLastEdit() ) {
2973                                 $conflictTextBoxAttribs['style'] = 'display:none;';
2974                         } elseif ( $this->isOldRev ) {
2975                                 $conflictTextBoxAttribs['class'] = 'mw-textarea-oldrev';
2976                         }
2977
2978                         $out->addHTML( $editConflictHelper->getEditConflictMainTextBox( $conflictTextBoxAttribs ) );
2979                         $out->addHTML( $editConflictHelper->getEditFormHtmlAfterContent() );
2980                 } else {
2981                         $this->showContentForm();
2982                 }
2983
2984                 $out->addHTML( $this->editFormTextAfterContent );
2985
2986                 $this->showStandardInputs();
2987
2988                 $this->showFormAfterText();
2989
2990                 $this->showTosSummary();
2991
2992                 $this->showEditTools();
2993
2994                 $out->addHTML( $this->editFormTextAfterTools . "\n" );
2995
2996                 $out->addHTML( $this->makeTemplatesOnThisPageList( $this->getTemplates() ) );
2997
2998                 $out->addHTML( Html::rawElement( 'div', [ 'class' => 'hiddencats' ],
2999                         Linker::formatHiddenCategories( $this->page->getHiddenCategories() ) ) );
3000
3001                 $out->addHTML( Html::rawElement( 'div', [ 'class' => 'limitreport' ],
3002                         self::getPreviewLimitReport( $this->mParserOutput ) ) );
3003
3004                 $out->addModules( 'mediawiki.action.edit.collapsibleFooter' );
3005
3006                 if ( $this->isConflict ) {
3007                         try {
3008                                 $this->showConflict();
3009                         } catch ( MWContentSerializationException $ex ) {
3010                                 // this can't really happen, but be nice if it does.
3011                                 $msg = $this->context->msg(
3012                                         'content-failed-to-parse',
3013                                         $this->contentModel,
3014                                         $this->contentFormat,
3015                                         $ex->getMessage()
3016                                 );
3017                                 $out->wrapWikiTextAsInterface( 'error', $msg->plain() );
3018                         }
3019                 }
3020
3021                 // Set a hidden field so JS knows what edit form mode we are in
3022                 if ( $this->isConflict ) {
3023                         $mode = 'conflict';
3024                 } elseif ( $this->preview ) {
3025                         $mode = 'preview';
3026                 } elseif ( $this->diff ) {
3027                         $mode = 'diff';
3028                 } else {
3029                         $mode = 'text';
3030                 }
3031                 $out->addHTML( Html::hidden( 'mode', $mode, [ 'id' => 'mw-edit-mode' ] ) );
3032
3033                 // Marker for detecting truncated form data.  This must be the last
3034                 // parameter sent in order to be of use, so do not move me.
3035                 $out->addHTML( Html::hidden( 'wpUltimateParam', true ) );
3036                 $out->addHTML( $this->editFormTextBottom . "\n</form>\n" );
3037
3038                 if ( !$user->getOption( 'previewontop' ) ) {
3039                         $this->displayPreviewArea( $previewOutput, false );
3040                 }
3041         }
3042
3043         /**
3044          * Wrapper around TemplatesOnThisPageFormatter to make
3045          * a "templates on this page" list.
3046          *
3047          * @param Title[] $templates
3048          * @return string HTML
3049          */
3050         public function makeTemplatesOnThisPageList( array $templates ) {
3051                 $templateListFormatter = new TemplatesOnThisPageFormatter(
3052                         $this->context, MediaWikiServices::getInstance()->getLinkRenderer()
3053                 );
3054
3055                 // preview if preview, else section if section, else false
3056                 $type = false;
3057                 if ( $this->preview ) {
3058                         $type = 'preview';
3059                 } elseif ( $this->section != '' ) {
3060                         $type = 'section';
3061                 }
3062
3063                 return Html::rawElement( 'div', [ 'class' => 'templatesUsed' ],
3064                         $templateListFormatter->format( $templates, $type )
3065                 );
3066         }
3067
3068         /**
3069          * Extract the section title from current section text, if any.
3070          *
3071          * @param string $text
3072          * @return string|bool String or false
3073          */
3074         public static function extractSectionTitle( $text ) {
3075                 preg_match( "/^(=+)(.+)\\1\\s*(\n|$)/i", $text, $matches );
3076                 if ( !empty( $matches[2] ) ) {
3077                         return MediaWikiServices::getInstance()->getParser()
3078                                 ->stripSectionName( trim( $matches[2] ) );
3079                 } else {
3080                         return false;
3081                 }
3082         }
3083
3084         protected function showHeader() {
3085                 $out = $this->context->getOutput();
3086                 $user = $this->context->getUser();
3087                 if ( $this->isConflict ) {
3088                         $this->addExplainConflictHeader( $out );
3089                         $this->editRevId = $this->page->getLatest();
3090                 } else {
3091                         if ( $this->section != '' && $this->section != 'new' && !$this->summary &&
3092                                 !$this->preview && !$this->diff
3093                         ) {
3094                                 $sectionTitle = self::extractSectionTitle( $this->textbox1 ); // FIXME: use Content object
3095                                 if ( $sectionTitle !== false ) {
3096                                         $this->summary = "/* $sectionTitle */ ";
3097                                 }
3098                         }
3099
3100                         $buttonLabel = $this->context->msg( $this->getSubmitButtonLabel() )->text();
3101
3102                         if ( $this->missingComment ) {
3103                                 $out->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
3104                         }
3105
3106                         if ( $this->missingSummary && $this->section != 'new' ) {
3107                                 $out->wrapWikiMsg(
3108                                         "<div id='mw-missingsummary'>\n$1\n</div>",
3109                                         [ 'missingsummary', $buttonLabel ]
3110                                 );
3111                         }
3112
3113                         if ( $this->missingSummary && $this->section == 'new' ) {
3114                                 $out->wrapWikiMsg(
3115                                         "<div id='mw-missingcommentheader'>\n$1\n</div>",
3116                                         [ 'missingcommentheader', $buttonLabel ]
3117                                 );
3118                         }
3119
3120                         if ( $this->blankArticle ) {
3121                                 $out->wrapWikiMsg(
3122                                         "<div id='mw-blankarticle'>\n$1\n</div>",
3123                                         [ 'blankarticle', $buttonLabel ]
3124                                 );
3125                         }
3126
3127                         if ( $this->selfRedirect ) {
3128                                 $out->wrapWikiMsg(
3129                                         "<div id='mw-selfredirect'>\n$1\n</div>",
3130                                         [ 'selfredirect', $buttonLabel ]
3131                                 );
3132                         }
3133
3134                         if ( $this->hookError !== '' ) {
3135                                 $out->addWikiTextAsInterface( $this->hookError );
3136                         }
3137
3138                         if ( $this->section != 'new' ) {
3139                                 $revision = $this->mArticle->getRevisionFetched();
3140                                 if ( $revision ) {
3141                                         // Let sysop know that this will make private content public if saved
3142
3143                                         if ( !$revision->userCan( RevisionRecord::DELETED_TEXT, $user ) ) {
3144                                                 $out->wrapWikiMsg(
3145                                                         "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
3146                                                         'rev-deleted-text-permission'
3147                                                 );
3148                                         } elseif ( $revision->isDeleted( RevisionRecord::DELETED_TEXT ) ) {
3149                                                 $out->wrapWikiMsg(
3150                                                         "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
3151                                                         'rev-deleted-text-view'
3152                                                 );
3153                                         }
3154
3155                                         if ( !$revision->isCurrent() ) {
3156                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
3157                                                 $out->wrapWikiMsg(
3158                                                         Html::warningBox( "\n$1\n" ),
3159                                                         'editingold'
3160                                                 );
3161                                                 $this->isOldRev = true;
3162                                         }
3163                                 } elseif ( $this->mTitle->exists() ) {
3164                                         // Something went wrong
3165
3166                                         $out->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
3167                                                 [ 'missing-revision', $this->oldid ] );
3168                                 }
3169                         }
3170                 }
3171
3172                 if ( wfReadOnly() ) {
3173                         $out->wrapWikiMsg(
3174                                 "<div id=\"mw-read-only-warning\">\n$1\n</div>",
3175                                 [ 'readonlywarning', wfReadOnlyReason() ]
3176                         );
3177                 } elseif ( $user->isAnon() ) {
3178                         if ( $this->formtype != 'preview' ) {
3179                                 $returntoquery = array_diff_key(
3180                                         $this->context->getRequest()->getValues(),
3181                                         [ 'title' => true, 'returnto' => true, 'returntoquery' => true ]
3182                                 );
3183                                 $out->wrapWikiMsg(
3184                                         "<div id='mw-anon-edit-warning' class='warningbox'>\n$1\n</div>",
3185                                         [ 'anoneditwarning',
3186                                                 // Log-in link
3187                                                 SpecialPage::getTitleFor( 'Userlogin' )->getFullURL( [
3188                                                         'returnto' => $this->getTitle()->getPrefixedDBkey(),
3189                                                         'returntoquery' => wfArrayToCgi( $returntoquery ),
3190                                                 ] ),
3191                                                 // Sign-up link
3192                                                 SpecialPage::getTitleFor( 'CreateAccount' )->getFullURL( [
3193                                                         'returnto' => $this->getTitle()->getPrefixedDBkey(),
3194                                                         'returntoquery' => wfArrayToCgi( $returntoquery ),
3195                                                 ] )
3196                                         ]
3197                                 );
3198                         } else {
3199                                 $out->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\" class=\"warningbox\">\n$1</div>",
3200                                         'anonpreviewwarning'
3201                                 );
3202                         }
3203                 } elseif ( $this->mTitle->isUserConfigPage() ) {
3204                         # Check the skin exists
3205                         if ( $this->isWrongCaseUserConfigPage() ) {
3206                                 $out->wrapWikiMsg(
3207                                         "<div class='error' id='mw-userinvalidconfigtitle'>\n$1\n</div>",
3208                                         [ 'userinvalidconfigtitle', $this->mTitle->getSkinFromConfigSubpage() ]
3209                                 );
3210                         }
3211                         if ( $this->getTitle()->isSubpageOf( $user->getUserPage() ) ) {
3212                                 $isUserCssConfig = $this->mTitle->isUserCssConfigPage();
3213                                 $isUserJsonConfig = $this->mTitle->isUserJsonConfigPage();
3214                                 $isUserJsConfig = $this->mTitle->isUserJsConfigPage();
3215
3216                                 $warning = $isUserCssConfig
3217                                         ? 'usercssispublic'
3218                                         : ( $isUserJsonConfig ? 'userjsonispublic' : 'userjsispublic' );
3219
3220                                 $out->wrapWikiMsg( '<div class="mw-userconfigpublic">$1</div>', $warning );
3221
3222                                 if ( $this->formtype !== 'preview' ) {
3223                                         $config = $this->context->getConfig();
3224                                         if ( $isUserCssConfig && $config->get( 'AllowUserCss' ) ) {
3225                                                 $out->wrapWikiMsg(
3226                                                         "<div id='mw-usercssyoucanpreview'>\n$1\n</div>",
3227                                                         [ 'usercssyoucanpreview' ]
3228                                                 );
3229                                         } elseif ( $isUserJsonConfig /* No comparable 'AllowUserJson' */ ) {
3230                                                 $out->wrapWikiMsg(
3231                                                         "<div id='mw-userjsonyoucanpreview'>\n$1\n</div>",
3232                                                         [ 'userjsonyoucanpreview' ]
3233                                                 );
3234                                         } elseif ( $isUserJsConfig && $config->get( 'AllowUserJs' ) ) {
3235                                                 $out->wrapWikiMsg(
3236                                                         "<div id='mw-userjsyoucanpreview'>\n$1\n</div>",
3237                                                         [ 'userjsyoucanpreview' ]
3238                                                 );
3239                                         }
3240                                 }
3241                         }
3242                 }
3243
3244                 $this->addPageProtectionWarningHeaders();
3245
3246                 $this->addLongPageWarningHeader();
3247
3248                 # Add header copyright warning
3249                 $this->showHeaderCopyrightWarning();
3250         }
3251
3252         /**
3253          * Helper function for summary input functions, which returns the necessary
3254          * attributes for the input.
3255          *
3256          * @param array|null $inputAttrs Array of attrs to use on the input
3257          * @return array
3258          */
3259         private function getSummaryInputAttributes( array $inputAttrs = null ) {
3260                 // HTML maxlength uses "UTF-16 code units", which means that characters outside BMP
3261                 // (e.g. emojis) count for two each. This limit is overridden in JS to instead count
3262                 // Unicode codepoints.
3263                 return ( is_array( $inputAttrs ) ? $inputAttrs : [] ) + [
3264                         'id' => 'wpSummary',
3265                         'name' => 'wpSummary',
3266                         'maxlength' => CommentStore::COMMENT_CHARACTER_LIMIT,
3267                         'tabindex' => 1,
3268                         'size' => 60,
3269                         'spellcheck' => 'true',
3270                 ];
3271         }
3272
3273         /**
3274          * Builds a standard summary input with a label.
3275          *
3276          * @param string $summary The value of the summary input
3277          * @param string|null $labelText The html to place inside the label
3278          * @param array|null $inputAttrs Array of attrs to use on the input
3279          *
3280          * @return OOUI\FieldLayout OOUI FieldLayout with Label and Input
3281          */
3282         function getSummaryInputWidget( $summary = "", $labelText = null, $inputAttrs = null ) {
3283                 $inputAttrs = OOUI\Element::configFromHtmlAttributes(
3284                         $this->getSummaryInputAttributes( $inputAttrs )
3285                 );
3286                 $inputAttrs += [
3287                         'title' => Linker::titleAttrib( 'summary' ),
3288                         'accessKey' => Linker::accesskey( 'summary' ),
3289                 ];
3290
3291                 // For compatibility with old scripts and extensions, we want the legacy 'id' on the `<input>`
3292                 $inputAttrs['inputId'] = $inputAttrs['id'];
3293                 $inputAttrs['id'] = 'wpSummaryWidget';
3294
3295                 return new OOUI\FieldLayout(
3296                         new OOUI\TextInputWidget( [
3297                                 'value' => $summary,
3298                                 'infusable' => true,
3299                         ] + $inputAttrs ),
3300                         [
3301                                 'label' => new OOUI\HtmlSnippet( $labelText ),
3302                                 'align' => 'top',
3303                                 'id' => 'wpSummaryLabel',
3304                                 'classes' => [ $this->missingSummary ? 'mw-summarymissed' : 'mw-summary' ],
3305                         ]
3306                 );
3307         }
3308
3309         /**
3310          * @param bool $isSubjectPreview True if this is the section subject/title
3311          *   up top, or false if this is the comment summary
3312          *   down below the textarea
3313          * @param string $summary The text of the summary to display
3314          */
3315         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
3316                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
3317                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
3318                 if ( $isSubjectPreview ) {
3319                         if ( $this->nosummary ) {
3320                                 return;
3321                         }
3322                 } elseif ( !$this->mShowSummaryField ) {
3323                         return;
3324                 }
3325
3326                 $labelText = $this->context->msg( $isSubjectPreview ? 'subject' : 'summary' )->parse();
3327                 $this->context->getOutput()->addHTML( $this->getSummaryInputWidget(
3328                                 $summary,
3329                                 $labelText,
3330                                 [ 'class' => $summaryClass ]
3331                         ) );
3332         }
3333
3334         /**
3335          * @param bool $isSubjectPreview True if this is the section subject/title
3336          *   up top, or false if this is the comment summary
3337          *   down below the textarea
3338          * @param string $summary The text of the summary to display
3339          * @return string
3340          */
3341         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
3342                 // avoid spaces in preview, gets always trimmed on save
3343                 $summary = trim( $summary );
3344                 if ( !$summary || ( !$this->preview && !$this->diff ) ) {
3345                         return "";
3346                 }
3347
3348                 if ( $isSubjectPreview ) {
3349                         $summary = $this->context->msg( 'newsectionsummary' )
3350                                 ->rawParams( MediaWikiServices::getInstance()->getParser()
3351                                         ->stripSectionName( $summary ) )
3352                                 ->inContentLanguage()->text();
3353                 }
3354
3355                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
3356
3357                 $summary = $this->context->msg( $message )->parse()
3358                         . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
3359                 return Xml::tags( 'div', [ 'class' => 'mw-summary-preview' ], $summary );
3360         }
3361
3362         protected function showFormBeforeText() {
3363                 $out = $this->context->getOutput();
3364                 $out->addHTML( Html::hidden( 'wpSection', $this->section ) );
3365                 $out->addHTML( Html::hidden( 'wpStarttime', $this->starttime ) );
3366                 $out->addHTML( Html::hidden( 'wpEdittime', $this->edittime ) );
3367                 $out->addHTML( Html::hidden( 'editRevId', $this->editRevId ) );
3368                 $out->addHTML( Html::hidden( 'wpScrolltop', $this->scrolltop, [ 'id' => 'wpScrolltop' ] ) );
3369         }
3370
3371         protected function showFormAfterText() {
3372                 /**
3373                  * To make it harder for someone to slip a user a page
3374                  * which submits an edit form to the wiki without their
3375                  * knowledge, a random token is associated with the login
3376                  * session. If it's not passed back with the submission,
3377                  * we won't save the page, or render user JavaScript and
3378                  * CSS previews.
3379                  *
3380                  * For anon editors, who may not have a session, we just
3381                  * include the constant suffix to prevent editing from
3382                  * broken text-mangling proxies.
3383                  */
3384                 $this->context->getOutput()->addHTML(
3385                         "\n" .
3386                         Html::hidden( "wpEditToken", $this->context->getUser()->getEditToken() ) .
3387                         "\n"
3388                 );
3389         }
3390
3391         /**
3392          * Subpage overridable method for printing the form for page content editing
3393          * By default this simply outputs wpTextbox1
3394          * Subclasses can override this to provide a custom UI for editing;
3395          * be it a form, or simply wpTextbox1 with a modified content that will be
3396          * reverse modified when extracted from the post data.
3397          * Note that this is basically the inverse for importContentFormData
3398          */
3399         protected function showContentForm() {
3400                 $this->showTextbox1();
3401         }
3402
3403         /**
3404          * Method to output wpTextbox1
3405          * The $textoverride method can be used by subclasses overriding showContentForm
3406          * to pass back to this method.
3407          *
3408          * @param array|null $customAttribs Array of html attributes to use in the textarea
3409          * @param string|null $textoverride Optional text to override $this->textarea1 with
3410          */
3411         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
3412                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
3413                         $attribs = [ 'style' => 'display:none;' ];
3414                 } else {
3415                         $builder = new TextboxBuilder();
3416                         $classes = $builder->getTextboxProtectionCSSClasses( $this->getTitle() );
3417
3418                         # Is an old revision being edited?
3419                         if ( $this->isOldRev ) {
3420                                 $classes[] = 'mw-textarea-oldrev';
3421                         }
3422
3423                         $attribs = [ 'tabindex' => 1 ];
3424
3425                         if ( is_array( $customAttribs ) ) {
3426                                 $attribs += $customAttribs;
3427                         }
3428
3429                         $attribs = $builder->mergeClassesIntoAttributes( $classes, $attribs );
3430                 }
3431
3432                 $this->showTextbox(
3433                         $textoverride ?? $this->textbox1,
3434                         'wpTextbox1',
3435                         $attribs
3436                 );
3437         }
3438
3439         protected function showTextbox2() {
3440                 $this->showTextbox( $this->textbox2, 'wpTextbox2', [ 'tabindex' => 6, 'readonly' ] );
3441         }
3442
3443         protected function showTextbox( $text, $name, $customAttribs = [] ) {
3444                 $builder = new TextboxBuilder();
3445                 $attribs = $builder->buildTextboxAttribs(
3446                         $name,
3447                         $customAttribs,
3448                         $this->context->getUser(),
3449                         $this->mTitle
3450                 );
3451
3452                 $this->context->getOutput()->addHTML(
3453                         Html::textarea( $name, $builder->addNewLineAtEnd( $text ), $attribs )
3454                 );
3455         }
3456
3457         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
3458                 $classes = [];
3459                 if ( $isOnTop ) {
3460                         $classes[] = 'ontop';
3461                 }
3462
3463                 $attribs = [ 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) ];
3464
3465                 if ( $this->formtype != 'preview' ) {
3466                         $attribs['style'] = 'display: none;';
3467                 }
3468
3469                 $out = $this->context->getOutput();
3470                 $out->addHTML( Xml::openElement( 'div', $attribs ) );
3471
3472                 if ( $this->formtype == 'preview' ) {
3473                         $this->showPreview( $previewOutput );
3474                 } else {
3475                         // Empty content container for LivePreview
3476                         $pageViewLang = $this->mTitle->getPageViewLanguage();
3477                         $attribs = [ 'lang' => $pageViewLang->getHtmlCode(), 'dir' => $pageViewLang->getDir(),
3478                                 'class' => 'mw-content-' . $pageViewLang->getDir() ];
3479                         $out->addHTML( Html::rawElement( 'div', $attribs ) );
3480                 }
3481
3482                 $out->addHTML( '</div>' );
3483
3484                 if ( $this->formtype == 'diff' ) {
3485                         try {
3486                                 $this->showDiff();
3487                         } catch ( MWContentSerializationException $ex ) {
3488                                 $msg = $this->context->msg(
3489                                         'content-failed-to-parse',
3490                                         $this->contentModel,
3491                                         $this->contentFormat,
3492                                         $ex->getMessage()
3493                                 );
3494                                 $out->wrapWikiTextAsInterface( 'error', $msg->plain() );
3495                         }
3496                 }
3497         }
3498
3499         /**
3500          * Append preview output to OutputPage.
3501          * Includes category rendering if this is a category page.
3502          *
3503          * @param string $text The HTML to be output for the preview.
3504          */
3505         protected function showPreview( $text ) {
3506                 if ( $this->mArticle instanceof CategoryPage ) {
3507                         $this->mArticle->openShowCategory();
3508                 }
3509                 # This hook seems slightly odd here, but makes things more
3510                 # consistent for extensions.
3511                 $out = $this->context->getOutput();
3512                 Hooks::run( 'OutputPageBeforeHTML', [ &$out, &$text ] );
3513                 $out->addHTML( $text );
3514                 if ( $this->mArticle instanceof CategoryPage ) {
3515                         $this->mArticle->closeShowCategory();
3516                 }
3517         }
3518
3519         /**
3520          * Get a diff between the current contents of the edit box and the
3521          * version of the page we're editing from.
3522          *
3523          * If this is a section edit, we'll replace the section as for final
3524          * save and then make a comparison.
3525          */
3526         public function showDiff() {
3527                 $oldtitlemsg = 'currentrev';
3528                 # if message does not exist, show diff against the preloaded default
3529                 if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && !$this->mTitle->exists() ) {
3530                         $oldtext = $this->mTitle->getDefaultMessageText();
3531                         if ( $oldtext !== false ) {
3532                                 $oldtitlemsg = 'defaultmessagetext';
3533                                 $oldContent = $this->toEditContent( $oldtext );
3534                         } else {
3535                                 $oldContent = null;
3536                         }
3537                 } else {
3538                         $oldContent = $this->getCurrentContent();
3539                 }
3540
3541                 $textboxContent = $this->toEditContent( $this->textbox1 );
3542                 if ( $this->editRevId !== null ) {
3543                         $newContent = $this->page->replaceSectionAtRev(
3544                                 $this->section, $textboxContent, $this->summary, $this->editRevId
3545                         );
3546                 } else {
3547                         $newContent = $this->page->replaceSectionContent(
3548                                 $this->section, $textboxContent, $this->summary, $this->edittime
3549                         );
3550                 }
3551
3552                 if ( $newContent ) {
3553                         Hooks::run( 'EditPageGetDiffContent', [ $this, &$newContent ] );
3554
3555                         $user = $this->context->getUser();
3556                         $popts = ParserOptions::newFromUserAndLang( $user,
3557                                 MediaWikiServices::getInstance()->getContentLanguage() );
3558                         $newContent = $newContent->preSaveTransform( $this->mTitle, $user, $popts );
3559                 }
3560
3561                 if ( ( $oldContent && !$oldContent->isEmpty() ) || ( $newContent && !$newContent->isEmpty() ) ) {
3562                         $oldtitle = $this->context->msg( $oldtitlemsg )->parse();
3563                         $newtitle = $this->context->msg( 'yourtext' )->parse();
3564
3565                         if ( !$oldContent ) {
3566                                 $oldContent = $newContent->getContentHandler()->makeEmptyContent();
3567                         }
3568
3569                         if ( !$newContent ) {
3570                                 $newContent = $oldContent->getContentHandler()->makeEmptyContent();
3571                         }
3572
3573                         $de = $oldContent->getContentHandler()->createDifferenceEngine( $this->context );
3574                         $de->setContent( $oldContent, $newContent );
3575
3576                         $difftext = $de->getDiff( $oldtitle, $newtitle );
3577                         $de->showDiffStyle();
3578                 } else {
3579                         $difftext = '';
3580                 }
3581
3582                 $this->context->getOutput()->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
3583         }
3584
3585         /**
3586          * Show the header copyright warning.
3587          */
3588         protected function showHeaderCopyrightWarning() {
3589                 $msg = 'editpage-head-copy-warn';
3590                 if ( !$this->context->msg( $msg )->isDisabled() ) {
3591                         $this->context->getOutput()->wrapWikiMsg( "<div class='editpage-head-copywarn'>\n$1\n</div>",
3592                                 'editpage-head-copy-warn' );
3593                 }
3594         }
3595
3596         /**
3597          * Give a chance for site and per-namespace customizations of
3598          * terms of service summary link that might exist separately
3599          * from the copyright notice.
3600          *
3601          * This will display between the save button and the edit tools,
3602          * so should remain short!
3603          */
3604         protected function showTosSummary() {
3605                 $msg = 'editpage-tos-summary';
3606                 Hooks::run( 'EditPageTosSummary', [ $this->mTitle, &$msg ] );
3607                 if ( !$this->context->msg( $msg )->isDisabled() ) {
3608                         $out = $this->context->getOutput();
3609                         $out->addHTML( '<div class="mw-tos-summary">' );
3610                         $out->addWikiMsg( $msg );
3611                         $out->addHTML( '</div>' );
3612                 }
3613         }
3614
3615         /**
3616          * Inserts optional text shown below edit and upload forms. Can be used to offer special
3617          * characters not present on most keyboards for copying/pasting.
3618          */
3619         protected function showEditTools() {
3620                 $this->context->getOutput()->addHTML( '<div class="mw-editTools">' .
3621                         $this->context->msg( 'edittools' )->inContentLanguage()->parse() .
3622                         '</div>' );
3623         }
3624
3625         /**
3626          * Get the copyright warning
3627          *
3628          * Renamed to getCopyrightWarning(), old name kept around for backwards compatibility
3629          * @return string
3630          */
3631         protected function getCopywarn() {
3632                 return self::getCopyrightWarning( $this->mTitle );
3633         }
3634
3635         /**
3636          * Get the copyright warning, by default returns wikitext
3637          *
3638          * @param Title $title
3639          * @param string $format Output format, valid values are any function of a Message object
3640          * @param Language|string|null $langcode Language code or Language object.
3641          * @return string
3642          */
3643         public static function getCopyrightWarning( $title, $format = 'plain', $langcode = null ) {
3644                 global $wgRightsText;
3645                 if ( $wgRightsText ) {
3646                         $copywarnMsg = [ 'copyrightwarning',
3647                                 '[[' . wfMessage( 'copyrightpage' )->inContentLanguage()->text() . ']]',
3648                                 $wgRightsText ];
3649                 } else {
3650                         $copywarnMsg = [ 'copyrightwarning2',
3651                                 '[[' . wfMessage( 'copyrightpage' )->inContentLanguage()->text() . ']]' ];
3652                 }
3653                 // Allow for site and per-namespace customization of contribution/copyright notice.
3654                 Hooks::run( 'EditPageCopyrightWarning', [ $title, &$copywarnMsg ] );
3655
3656                 $msg = wfMessage( ...$copywarnMsg )->title( $title );
3657                 if ( $langcode ) {
3658                         $msg->inLanguage( $langcode );
3659                 }
3660                 return "<div id=\"editpage-copywarn\">\n" .
3661                         $msg->$format() . "\n</div>";
3662         }
3663
3664         /**
3665          * Get the Limit report for page previews
3666          *
3667          * @since 1.22
3668          * @param ParserOutput|null $output ParserOutput object from the parse
3669          * @return string HTML
3670          */
3671         public static function getPreviewLimitReport( ParserOutput $output = null ) {
3672                 global $wgLang;
3673
3674                 if ( !$output || !$output->getLimitReportData() ) {
3675                         return '';
3676                 }
3677
3678                 $limitReport = Html::rawElement( 'div', [ 'class' => 'mw-limitReportExplanation' ],
3679                         wfMessage( 'limitreport-title' )->parseAsBlock()
3680                 );
3681
3682                 // Show/hide animation doesn't work correctly on a table, so wrap it in a div.
3683                 $limitReport .= Html::openElement( 'div', [ 'class' => 'preview-limit-report-wrapper' ] );
3684
3685                 $limitReport .= Html::openElement( 'table', [
3686                         'class' => 'preview-limit-report wikitable'
3687                 ] ) .
3688                         Html::openElement( 'tbody' );
3689
3690                 foreach ( $output->getLimitReportData() as $key => $value ) {
3691                         if ( Hooks::run( 'ParserLimitReportFormat',
3692                                 [ $key, &$value, &$limitReport, true, true ]
3693                         ) ) {
3694                                 $keyMsg = wfMessage( $key );
3695                                 $valueMsg = wfMessage( [ "$key-value-html", "$key-value" ] );
3696                                 if ( !$valueMsg->exists() ) {
3697                                         $valueMsg = new RawMessage( '$1' );
3698                                 }
3699                                 if ( !$keyMsg->isDisabled() && !$valueMsg->isDisabled() ) {
3700                                         $limitReport .= Html::openElement( 'tr' ) .
3701                                                 Html::rawElement( 'th', null, $keyMsg->parse() ) .
3702                                                 Html::rawElement( 'td', null,
3703                                                         $wgLang->formatNum( $valueMsg->params( $value )->parse() )
3704                                                 ) .
3705                                                 Html::closeElement( 'tr' );
3706                                 }
3707                         }
3708                 }
3709
3710                 $limitReport .= Html::closeElement( 'tbody' ) .
3711                         Html::closeElement( 'table' ) .
3712                         Html::closeElement( 'div' );
3713
3714                 return $limitReport;
3715         }
3716
3717         protected function showStandardInputs( &$tabindex = 2 ) {
3718                 $out = $this->context->getOutput();
3719                 $out->addHTML( "<div class='editOptions'>\n" );
3720
3721                 if ( $this->section != 'new' ) {
3722                         $this->showSummaryInput( false, $this->summary );
3723                         $out->addHTML( $this->getSummaryPreview( false, $this->summary ) );
3724                 }
3725
3726                 $checkboxes = $this->getCheckboxesWidget(
3727                         $tabindex,
3728                         [ 'minor' => $this->minoredit, 'watch' => $this->watchthis ]
3729                 );
3730                 $checkboxesHTML = new OOUI\HorizontalLayout( [ 'items' => $checkboxes ] );
3731
3732                 $out->addHTML( "<div class='editCheckboxes'>" . $checkboxesHTML . "</div>\n" );
3733
3734                 // Show copyright warning.
3735                 $out->addWikiTextAsInterface( $this->getCopywarn() );
3736                 $out->addHTML( $this->editFormTextAfterWarn );
3737
3738                 $out->addHTML( "<div class='editButtons'>\n" );
3739                 $out->addHTML( implode( "\n", $this->getEditButtons( $tabindex ) ) . "\n" );
3740
3741                 $cancel = $this->getCancelLink();
3742
3743                 $message = $this->context->msg( 'edithelppage' )->inContentLanguage()->text();
3744                 $edithelpurl = Skin::makeInternalOrExternalUrl( $message );
3745                 $edithelp =
3746                         Html::linkButton(
3747                                 $this->context->msg( 'edithelp' )->text(),
3748                                 [ 'target' => 'helpwindow', 'href' => $edithelpurl ],
3749                                 [ 'mw-ui-quiet' ]
3750                         ) .
3751                         $this->context->msg( 'word-separator' )->escaped() .
3752                         $this->context->msg( 'newwindow' )->parse();
3753
3754                 $out->addHTML( "        <span class='cancelLink'>{$cancel}</span>\n" );
3755                 $out->addHTML( "        <span class='editHelp'>{$edithelp}</span>\n" );
3756                 $out->addHTML( "</div><!-- editButtons -->\n" );
3757
3758                 Hooks::run( 'EditPage::showStandardInputs:options', [ $this, $out, &$tabindex ] );
3759
3760                 $out->addHTML( "</div><!-- editOptions -->\n" );
3761         }
3762
3763         /**
3764          * Show an edit conflict. textbox1 is already shown in showEditForm().
3765          * If you want to use another entry point to this function, be careful.
3766          */
3767         protected function showConflict() {
3768                 $out = $this->context->getOutput();
3769                 // Avoid PHP 7.1 warning of passing $this by reference
3770                 $editPage = $this;
3771                 if ( Hooks::run( 'EditPageBeforeConflictDiff', [ &$editPage, &$out ] ) ) {
3772                         $this->incrementConflictStats();
3773
3774                         $this->getEditConflictHelper()->showEditFormTextAfterFooters();
3775                 }
3776         }
3777
3778         protected function incrementConflictStats() {
3779                 $this->getEditConflictHelper()->incrementConflictStats();
3780         }
3781
3782         /**
3783          * @return string
3784          */
3785         public function getCancelLink() {
3786                 $cancelParams = [];
3787                 if ( !$this->isConflict && $this->oldid > 0 ) {
3788                         $cancelParams['oldid'] = $this->oldid;
3789                 } elseif ( $this->getContextTitle()->isRedirect() ) {
3790                         $cancelParams['redirect'] = 'no';
3791                 }
3792
3793                 return new OOUI\ButtonWidget( [
3794                         'id' => 'mw-editform-cancel',
3795                         'href' => $this->getContextTitle()->getLinkURL( $cancelParams ),
3796                         'label' => new OOUI\HtmlSnippet( $this->context->msg( 'cancel' )->parse() ),
3797                         'framed' => false,
3798                         'infusable' => true,
3799                         'flags' => 'destructive',
3800                 ] );
3801         }
3802
3803         /**
3804          * Returns the URL to use in the form's action attribute.
3805          * This is used by EditPage subclasses when simply customizing the action
3806          * variable in the constructor is not enough. This can be used when the
3807          * EditPage lives inside of a Special page rather than a custom page action.
3808          *
3809          * @param Title $title Title object for which is being edited (where we go to for &action= links)
3810          * @return string
3811          */
3812         protected function getActionURL( Title $title ) {
3813                 return $title->getLocalURL( [ 'action' => $this->action ] );
3814         }
3815
3816         /**
3817          * Check if a page was deleted while the user was editing it, before submit.
3818          * Note that we rely on the logging table, which hasn't been always there,
3819          * but that doesn't matter, because this only applies to brand new
3820          * deletes.
3821          * @return bool
3822          */
3823         protected function wasDeletedSinceLastEdit() {
3824                 if ( $this->deletedSinceEdit !== null ) {
3825                         return $this->deletedSinceEdit;
3826                 }
3827
3828                 $this->deletedSinceEdit = false;
3829
3830                 if ( !$this->mTitle->exists() && $this->mTitle->isDeletedQuick() ) {
3831                         $this->lastDelete = $this->getLastDelete();
3832                         if ( $this->lastDelete ) {
3833                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
3834                                 if ( $deleteTime > $this->starttime ) {
3835                                         $this->deletedSinceEdit = true;
3836                                 }
3837                         }
3838                 }
3839
3840                 return $this->deletedSinceEdit;
3841         }
3842
3843         /**
3844          * Get the last log record of this page being deleted, if ever.  This is
3845          * used to detect whether a delete occurred during editing.
3846          * @return bool|stdClass
3847          */
3848         protected function getLastDelete() {
3849                 $dbr = wfGetDB( DB_REPLICA );
3850                 $commentQuery = CommentStore::getStore()->getJoin( 'log_comment' );
3851                 $actorQuery = ActorMigration::newMigration()->getJoin( 'log_user' );
3852                 $data = $dbr->selectRow(
3853                         array_merge( [ 'logging' ], $commentQuery['tables'], $actorQuery['tables'], [ 'user' ] ),
3854                         [
3855                                 'log_type',
3856                                 'log_action',
3857                                 'log_timestamp',
3858                                 'log_namespace',
3859                                 'log_title',
3860                                 'log_params',
3861                                 'log_deleted',
3862                                 'user_name'
3863                         ] + $commentQuery['fields'] + $actorQuery['fields'],
3864                         [
3865                                 'log_namespace' => $this->mTitle->getNamespace(),
3866                                 'log_title' => $this->mTitle->getDBkey(),
3867                                 'log_type' => 'delete',
3868                                 'log_action' => 'delete',
3869                         ],
3870                         __METHOD__,
3871                         [ 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ],
3872                         [
3873                                 'user' => [ 'JOIN', 'user_id=' . $actorQuery['fields']['log_user'] ],
3874                         ] + $commentQuery['joins'] + $actorQuery['joins']
3875                 );
3876                 // Quick paranoid permission checks...
3877                 if ( is_object( $data ) ) {
3878                         if ( $data->log_deleted & LogPage::DELETED_USER ) {
3879                                 $data->user_name = $this->context->msg( 'rev-deleted-user' )->escaped();
3880                         }
3881
3882                         if ( $data->log_deleted & LogPage::DELETED_COMMENT ) {
3883                                 $data->log_comment_text = $this->context->msg( 'rev-deleted-comment' )->escaped();
3884                                 $data->log_comment_data = null;
3885                         }
3886                 }
3887
3888                 return $data;
3889         }
3890
3891         /**
3892          * Get the rendered text for previewing.
3893          * @throws MWException
3894          * @return string
3895          */
3896         public function getPreviewText() {
3897                 $out = $this->context->getOutput();
3898                 $config = $this->context->getConfig();
3899
3900                 if ( $config->get( 'RawHtml' ) && !$this->mTokenOk ) {
3901                         // Could be an offsite preview attempt. This is very unsafe if
3902                         // HTML is enabled, as it could be an attack.
3903                         $parsedNote = '';
3904                         if ( $this->textbox1 !== '' ) {
3905                                 // Do not put big scary notice, if previewing the empty
3906                                 // string, which happens when you initially edit
3907                                 // a category page, due to automatic preview-on-open.
3908                                 $parsedNote = Html::rawElement( 'div', [ 'class' => 'previewnote' ],
3909                                         $out->parseAsInterface(
3910                                                 $this->context->msg( 'session_fail_preview_html' )->plain()
3911                                         ) );
3912                         }
3913                         $this->incrementEditFailureStats( 'session_loss' );
3914                         return $parsedNote;
3915                 }
3916
3917                 $note = '';
3918
3919                 try {
3920                         $content = $this->toEditContent( $this->textbox1 );
3921
3922                         $previewHTML = '';
3923                         if ( !Hooks::run(
3924                                 'AlternateEditPreview',
3925                                 [ $this, &$content, &$previewHTML, &$this->mParserOutput ] )
3926                         ) {
3927                                 return $previewHTML;
3928                         }
3929
3930                         # provide a anchor link to the editform
3931                         $continueEditing = '<span class="mw-continue-editing">' .
3932                                 '[[#' . self::EDITFORM_ID . '|' .
3933                                 $this->context->getLanguage()->getArrow() . ' ' .
3934                                 $this->context->msg( 'continue-editing' )->text() . ']]</span>';
3935                         if ( $this->mTriedSave && !$this->mTokenOk ) {
3936                                 if ( $this->mTokenOkExceptSuffix ) {
3937                                         $note = $this->context->msg( 'token_suffix_mismatch' )->plain();
3938                                         $this->incrementEditFailureStats( 'bad_token' );
3939                                 } else {
3940                                         $note = $this->context->msg( 'session_fail_preview' )->plain();
3941                                         $this->incrementEditFailureStats( 'session_loss' );
3942                                 }
3943                         } elseif ( $this->incompleteForm ) {
3944                                 $note = $this->context->msg( 'edit_form_incomplete' )->plain();
3945                                 if ( $this->mTriedSave ) {
3946                                         $this->incrementEditFailureStats( 'incomplete_form' );
3947                                 }
3948                         } else {
3949                                 $note = $this->context->msg( 'previewnote' )->plain() . ' ' . $continueEditing;
3950                         }
3951
3952                         # don't parse non-wikitext pages, show message about preview
3953                         if ( $this->mTitle->isUserConfigPage() || $this->mTitle->isSiteConfigPage() ) {
3954                                 if ( $this->mTitle->isUserConfigPage() ) {
3955                                         $level = 'user';
3956                                 } elseif ( $this->mTitle->isSiteConfigPage() ) {
3957                                         $level = 'site';
3958                                 } else {
3959                                         $level = false;
3960                                 }
3961
3962                                 if ( $content->getModel() == CONTENT_MODEL_CSS ) {
3963                                         $format = 'css';
3964                                         if ( $level === 'user' && !$config->get( 'AllowUserCss' ) ) {
3965                                                 $format = false;
3966                                         }
3967                                 } elseif ( $content->getModel() == CONTENT_MODEL_JSON ) {
3968                                         $format = 'json';
3969                                         if ( $level === 'user' /* No comparable 'AllowUserJson' */ ) {
3970                                                 $format = false;
3971                                         }
3972                                 } elseif ( $content->getModel() == CONTENT_MODEL_JAVASCRIPT ) {
3973                                         $format = 'js';
3974                                         if ( $level === 'user' && !$config->get( 'AllowUserJs' ) ) {
3975                                                 $format = false;
3976                                         }
3977                                 } else {
3978                                         $format = false;
3979                                 }
3980
3981                                 # Used messages to make sure grep find them:
3982                                 # Messages: usercsspreview, userjsonpreview, userjspreview,
3983                                 #   sitecsspreview, sitejsonpreview, sitejspreview
3984                                 if ( $level && $format ) {
3985                                         $note = "<div id='mw-{$level}{$format}preview'>" .
3986                                                 $this->context->msg( "{$level}{$format}preview" )->plain() .
3987                                                 ' ' . $continueEditing . "</div>";
3988                                 }
3989                         }
3990
3991                         # If we're adding a comment, we need to show the
3992                         # summary as the headline
3993                         if ( $this->section === "new" && $this->summary !== "" ) {
3994                                 $content = $content->addSectionHeader( $this->summary );
3995                         }
3996
3997                         $hook_args = [ $this, &$content ];
3998                         Hooks::run( 'EditPageGetPreviewContent', $hook_args );
3999
4000                         $parserResult = $this->doPreviewParse( $content );
4001                         $parserOutput = $parserResult['parserOutput'];
4002                         $previewHTML = $parserResult['html'];
4003                         $this->mParserOutput = $parserOutput;
4004                         $out->addParserOutputMetadata( $parserOutput );
4005                         if ( $out->userCanPreview() ) {
4006                                 $out->addContentOverride( $this->getTitle(), $content );
4007                         }
4008
4009                         if ( count( $parserOutput->getWarnings() ) ) {
4010                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
4011                         }
4012
4013                 } catch ( MWContentSerializationException $ex ) {
4014                         $m = $this->context->msg(
4015                                 'content-failed-to-parse',
4016                                 $this->contentModel,
4017                                 $this->contentFormat,
4018                                 $ex->getMessage()
4019                         );
4020                         $note .= "\n\n" . $m->plain(); # gets parsed down below
4021                         $previewHTML = '';
4022                 }
4023
4024                 if ( $this->isConflict ) {
4025                         $conflict = Html::rawElement(
4026                                 'h2', [ 'id' => 'mw-previewconflict' ],
4027                                 $this->context->msg( 'previewconflict' )->escaped()
4028                         );
4029                 } else {
4030                         $conflict = '<hr />';
4031                 }
4032
4033                 $previewhead = Html::rawElement(
4034                         'div', [ 'class' => 'previewnote' ],
4035                         Html::rawElement(
4036                                 'h2', [ 'id' => 'mw-previewheader' ],
4037                                 $this->context->msg( 'preview' )->escaped()
4038                         ) .
4039                         $out->parseAsInterface( $note ) . $conflict
4040                 );
4041
4042                 $pageViewLang = $this->mTitle->getPageViewLanguage();
4043                 $attribs = [ 'lang' => $pageViewLang->getHtmlCode(), 'dir' => $pageViewLang->getDir(),
4044                         'class' => 'mw-content-' . $pageViewLang->getDir() ];
4045                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
4046
4047                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
4048         }
4049
4050         private function incrementEditFailureStats( $failureType ) {
4051                 $stats = MediaWikiServices::getInstance()->getStatsdDataFactory();
4052                 $stats->increment( 'edit.failures.' . $failureType );
4053         }
4054
4055         /**
4056          * Get parser options for a preview
4057          * @return ParserOptions
4058          */
4059         protected function getPreviewParserOptions() {
4060                 $parserOptions = $this->page->makeParserOptions( $this->context );
4061                 $parserOptions->setIsPreview( true );
4062                 $parserOptions->setIsSectionPreview( !is_null( $this->section ) && $this->section !== '' );
4063                 $parserOptions->enableLimitReport();
4064
4065                 // XXX: we could call $parserOptions->setCurrentRevisionCallback here to force the
4066                 // current revision to be null during PST, until setupFakeRevision is called on
4067                 // the ParserOptions. Currently, we rely on Parser::getRevisionObject() to ignore
4068                 // existing revisions in preview mode.
4069
4070                 return $parserOptions;
4071         }
4072
4073         /**
4074          * Parse the page for a preview. Subclasses may override this class, in order
4075          * to parse with different options, or to otherwise modify the preview HTML.
4076          *
4077          * @param Content $content The page content
4078          * @return array with keys:
4079          *   - parserOutput: The ParserOutput object
4080          *   - html: The HTML to be displayed
4081          */
4082         protected function doPreviewParse( Content $content ) {
4083                 $user = $this->context->getUser();
4084                 $parserOptions = $this->getPreviewParserOptions();
4085
4086                 // NOTE: preSaveTransform doesn't have a fake revision to operate on.
4087                 // Parser::getRevisionObject() will return null in preview mode,
4088                 // causing the context user to be used for {{subst:REVISIONUSER}}.
4089                 // XXX: Alternatively, we could also call setupFakeRevision() a second time:
4090                 // once before PST with $content, and then after PST with $pstContent.
4091                 $pstContent = $content->preSaveTransform( $this->mTitle, $user, $parserOptions );
4092                 $scopedCallback = $parserOptions->setupFakeRevision( $this->mTitle, $pstContent, $user );
4093                 $parserOutput = $pstContent->getParserOutput( $this->mTitle, null, $parserOptions );
4094                 ScopedCallback::consume( $scopedCallback );
4095                 return [
4096                         'parserOutput' => $parserOutput,
4097                         'html' => $parserOutput->getText( [
4098                                 'enableSectionEditLinks' => false
4099                         ] )
4100                 ];
4101         }
4102
4103         /**
4104          * @return array
4105          */
4106         public function getTemplates() {
4107                 if ( $this->preview || $this->section != '' ) {
4108                         $templates = [];
4109                         if ( !isset( $this->mParserOutput ) ) {
4110                                 return $templates;
4111                         }
4112                         foreach ( $this->mParserOutput->getTemplates() as $ns => $template ) {
4113                                 foreach ( array_keys( $template ) as $dbk ) {
4114                                         $templates[] = Title::makeTitle( $ns, $dbk );
4115                                 }
4116                         }
4117                         return $templates;
4118                 } else {
4119                         return $this->mTitle->getTemplateLinksFrom();
4120                 }
4121         }
4122
4123         /**
4124          * Allow extensions to provide a toolbar.
4125          *
4126          * @return string|null
4127          */
4128         public static function getEditToolbar() {
4129                 $startingToolbar = '<div id="toolbar"></div>';
4130                 $toolbar = $startingToolbar;
4131
4132                 if ( !Hooks::run( 'EditPageBeforeEditToolbar', [ &$toolbar ] ) ) {
4133                         return null;
4134                 }
4135                 // Don't add a pointless `<div>` to the page unless a hook caller populated it
4136                 return ( $toolbar === $startingToolbar ) ? null : $toolbar;
4137         }
4138
4139         /**
4140          * Return an array of checkbox definitions.
4141          *
4142          * Array keys correspond to the `<input>` 'name' attribute to use for each checkbox.
4143          *
4144          * Array values are associative arrays with the following keys:
4145          *  - 'label-message' (required): message for label text
4146          *  - 'id' (required): 'id' attribute for the `<input>`
4147          *  - 'default' (required): default checkedness (true or false)
4148          *  - 'title-message' (optional): used to generate 'title' attribute for the `<label>`
4149          *  - 'tooltip' (optional): used to generate 'title' and 'accesskey' attributes
4150          *    from messages like 'tooltip-foo', 'accesskey-foo'
4151          *  - 'label-id' (optional): 'id' attribute for the `<label>`
4152          *  - 'legacy-name' (optional): short name for backwards-compatibility
4153          * @param array $checked Array of checkbox name (matching the 'legacy-name') => bool,
4154          *   where bool indicates the checked status of the checkbox
4155          * @return array
4156          */
4157         public function getCheckboxesDefinition( $checked ) {
4158                 $checkboxes = [];
4159
4160                 $user = $this->context->getUser();
4161                 // don't show the minor edit checkbox if it's a new page or section
4162                 if ( !$this->isNew && $user->isAllowed( 'minoredit' ) ) {
4163                         $checkboxes['wpMinoredit'] = [
4164                                 'id' => 'wpMinoredit',
4165                                 'label-message' => 'minoredit',
4166                                 // Uses messages: tooltip-minoredit, accesskey-minoredit
4167                                 'tooltip' => 'minoredit',
4168                                 'label-id' => 'mw-editpage-minoredit',
4169                                 'legacy-name' => 'minor',
4170                                 'default' => $checked['minor'],
4171                         ];
4172                 }
4173
4174                 if ( $user->isLoggedIn() ) {
4175                         $checkboxes['wpWatchthis'] = [
4176                                 'id' => 'wpWatchthis',
4177                                 'label-message' => 'watchthis',
4178                                 // Uses messages: tooltip-watch, accesskey-watch
4179                                 'tooltip' => 'watch',
4180                                 'label-id' => 'mw-editpage-watch',
4181                                 'legacy-name' => 'watch',
4182                                 'default' => $checked['watch'],
4183                         ];
4184                 }
4185
4186                 $editPage = $this;
4187                 Hooks::run( 'EditPageGetCheckboxesDefinition', [ $editPage, &$checkboxes ] );
4188
4189                 return $checkboxes;
4190         }
4191
4192         /**
4193          * Returns an array of checkboxes for the edit form, including 'minor' and 'watch' checkboxes and
4194          * any other added by extensions.
4195          *
4196          * @param int &$tabindex Current tabindex
4197          * @param array $checked Array of checkbox => bool, where bool indicates the checked
4198          *                 status of the checkbox
4199          *
4200          * @return array Associative array of string keys to OOUI\FieldLayout instances
4201          */
4202         public function getCheckboxesWidget( &$tabindex, $checked ) {
4203                 $checkboxes = [];
4204                 $checkboxesDef = $this->getCheckboxesDefinition( $checked );
4205
4206                 foreach ( $checkboxesDef as $name => $options ) {
4207                         $legacyName = $options['legacy-name'] ?? $name;
4208
4209                         $title = null;
4210                         $accesskey = null;
4211                         if ( isset( $options['tooltip'] ) ) {
4212                                 $accesskey = $this->context->msg( "accesskey-{$options['tooltip']}" )->text();
4213                                 $title = Linker::titleAttrib( $options['tooltip'] );
4214                         }
4215                         if ( isset( $options['title-message'] ) ) {
4216                                 $title = $this->context->msg( $options['title-message'] )->text();
4217                         }
4218
4219                         $checkboxes[ $legacyName ] = new OOUI\FieldLayout(
4220                                 new OOUI\CheckboxInputWidget( [
4221                                         'tabIndex' => ++$tabindex,
4222                                         'accessKey' => $accesskey,
4223                                         'id' => $options['id'] . 'Widget',
4224                                         'inputId' => $options['id'],
4225                                         'name' => $name,
4226                                         'selected' => $options['default'],
4227                                         'infusable' => true,
4228                                 ] ),
4229                                 [
4230                                         'align' => 'inline',
4231                                         'label' => new OOUI\HtmlSnippet( $this->context->msg( $options['label-message'] )->parse() ),
4232                                         'title' => $title,
4233                                         'id' => $options['label-id'] ?? null,
4234                                 ]
4235                         );
4236                 }
4237
4238                 return $checkboxes;
4239         }
4240
4241         /**
4242          * Get the message key of the label for the button to save the page
4243          *
4244          * @since 1.30
4245          * @return string
4246          */
4247         protected function getSubmitButtonLabel() {
4248                 $labelAsPublish =
4249                         $this->context->getConfig()->get( 'EditSubmitButtonLabelPublish' );
4250
4251                 // Can't use $this->isNew as that's also true if we're adding a new section to an extant page
4252                 $newPage = !$this->mTitle->exists();
4253
4254                 if ( $labelAsPublish ) {
4255                         $buttonLabelKey = $newPage ? 'publishpage' : 'publishchanges';
4256                 } else {
4257                         $buttonLabelKey = $newPage ? 'savearticle' : 'savechanges';
4258                 }
4259
4260                 return $buttonLabelKey;
4261         }
4262
4263         /**
4264          * Returns an array of html code of the following buttons:
4265          * save, diff and preview
4266          *
4267          * @param int &$tabindex Current tabindex
4268          *
4269          * @return array
4270          */
4271         public function getEditButtons( &$tabindex ) {
4272                 $buttons = [];
4273
4274                 $labelAsPublish =
4275                         $this->context->getConfig()->get( 'EditSubmitButtonLabelPublish' );
4276
4277                 $buttonLabel = $this->context->msg( $this->getSubmitButtonLabel() )->text();
4278                 $buttonTooltip = $labelAsPublish ? 'publish' : 'save';
4279
4280                 $buttons['save'] = new OOUI\ButtonInputWidget( [
4281                         'name' => 'wpSave',
4282                         'tabIndex' => ++$tabindex,
4283                         'id' => 'wpSaveWidget',
4284                         'inputId' => 'wpSave',
4285                         // Support: IE 6 – Use <input>, otherwise it can't distinguish which button was clicked
4286                         'useInputTag' => true,
4287                         'flags' => [ 'progressive', 'primary' ],
4288                         'label' => $buttonLabel,
4289                         'infusable' => true,
4290                         'type' => 'submit',
4291                         // Messages used: tooltip-save, tooltip-publish
4292                         'title' => Linker::titleAttrib( $buttonTooltip ),
4293                         // Messages used: accesskey-save, accesskey-publish
4294                         'accessKey' => Linker::accesskey( $buttonTooltip ),
4295                 ] );
4296
4297                 $buttons['preview'] = new OOUI\ButtonInputWidget( [
4298                         'name' => 'wpPreview',
4299                         'tabIndex' => ++$tabindex,
4300                         'id' => 'wpPreviewWidget',
4301                         'inputId' => 'wpPreview',
4302                         // Support: IE 6 – Use <input>, otherwise it can't distinguish which button was clicked
4303                         'useInputTag' => true,
4304                         'label' => $this->context->msg( 'showpreview' )->text(),
4305                         'infusable' => true,
4306                         'type' => 'submit',
4307                         // Message used: tooltip-preview
4308                         'title' => Linker::titleAttrib( 'preview' ),
4309                         // Message used: accesskey-preview
4310                         'accessKey' => Linker::accesskey( 'preview' ),
4311                 ] );
4312
4313                 $buttons['diff'] = new OOUI\ButtonInputWidget( [
4314                         'name' => 'wpDiff',
4315                         'tabIndex' => ++$tabindex,
4316                         'id' => 'wpDiffWidget',
4317                         'inputId' => 'wpDiff',
4318                         // Support: IE 6 – Use <input>, otherwise it can't distinguish which button was clicked
4319                         'useInputTag' => true,
4320                         'label' => $this->context->msg( 'showdiff' )->text(),
4321                         'infusable' => true,
4322                         'type' => 'submit',
4323                         // Message used: tooltip-diff
4324                         'title' => Linker::titleAttrib( 'diff' ),
4325                         // Message used: accesskey-diff
4326                         'accessKey' => Linker::accesskey( 'diff' ),
4327                 ] );
4328
4329                 // Avoid PHP 7.1 warning of passing $this by reference
4330                 $editPage = $this;
4331                 Hooks::run( 'EditPageBeforeEditButtons', [ &$editPage, &$buttons, &$tabindex ] );
4332
4333                 return $buttons;
4334         }
4335
4336         /**
4337          * Creates a basic error page which informs the user that
4338          * they have attempted to edit a nonexistent section.
4339          */
4340         public function noSuchSectionPage() {
4341                 $out = $this->context->getOutput();
4342                 $out->prepareErrorPage( $this->context->msg( 'nosuchsectiontitle' ) );
4343
4344                 $res = $this->context->msg( 'nosuchsectiontext', $this->section )->parseAsBlock();
4345
4346                 // Avoid PHP 7.1 warning of passing $this by reference
4347                 $editPage = $this;
4348                 Hooks::run( 'EditPageNoSuchSection', [ &$editPage, &$res ] );
4349                 $out->addHTML( $res );
4350
4351                 $out->returnToMain( false, $this->mTitle );
4352         }
4353
4354         /**
4355          * Show "your edit contains spam" page with your diff and text
4356          *
4357          * @param string|array|bool $match Text (or array of texts) which triggered one or more filters
4358          */
4359         public function spamPageWithContent( $match = false ) {
4360                 $this->textbox2 = $this->textbox1;
4361
4362                 if ( is_array( $match ) ) {
4363                         $match = $this->context->getLanguage()->listToText( $match );
4364                 }
4365                 $out = $this->context->getOutput();
4366                 $out->prepareErrorPage( $this->context->msg( 'spamprotectiontitle' ) );
4367
4368                 $out->addHTML( '<div id="spamprotected">' );
4369                 $out->addWikiMsg( 'spamprotectiontext' );
4370                 if ( $match ) {
4371                         $out->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
4372                 }
4373                 $out->addHTML( '</div>' );
4374
4375                 $out->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
4376                 $this->showDiff();
4377
4378                 $out->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
4379                 $this->showTextbox2();
4380
4381                 $out->addReturnTo( $this->getContextTitle(), [ 'action' => 'edit' ] );
4382         }
4383
4384         /**
4385          * @since 1.29
4386          */
4387         protected function addEditNotices() {
4388                 $out = $this->context->getOutput();
4389                 $editNotices = $this->mTitle->getEditNotices( $this->oldid );
4390                 if ( count( $editNotices ) ) {
4391                         $out->addHTML( implode( "\n", $editNotices ) );
4392                 } else {
4393                         $msg = $this->context->msg( 'editnotice-notext' );
4394                         if ( !$msg->isDisabled() ) {
4395                                 $out->addHTML(
4396                                         '<div class="mw-editnotice-notext">'
4397                                         . $msg->parseAsBlock()
4398                                         . '</div>'
4399                                 );
4400                         }
4401                 }
4402         }
4403
4404         /**
4405          * @since 1.29
4406          */
4407         protected function addTalkPageText() {
4408                 if ( $this->mTitle->isTalkPage() ) {
4409                         $this->context->getOutput()->addWikiMsg( 'talkpagetext' );
4410                 }
4411         }
4412
4413         /**
4414          * @since 1.29
4415          */
4416         protected function addLongPageWarningHeader() {
4417                 if ( $this->contentLength === false ) {
4418                         $this->contentLength = strlen( $this->textbox1 );
4419                 }
4420
4421                 $out = $this->context->getOutput();
4422                 $lang = $this->context->getLanguage();
4423                 $maxArticleSize = $this->context->getConfig()->get( 'MaxArticleSize' );
4424                 if ( $this->tooBig || $this->contentLength > $maxArticleSize * 1024 ) {
4425                         $out->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
4426                                 [
4427                                         'longpageerror',
4428                                         $lang->formatNum( round( $this->contentLength / 1024, 3 ) ),
4429                                         $lang->formatNum( $maxArticleSize )
4430                                 ]
4431                         );
4432                 } elseif ( !$this->context->msg( 'longpage-hint' )->isDisabled() ) {
4433                         $out->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
4434                                 [
4435                                         'longpage-hint',
4436                                         $lang->formatSize( strlen( $this->textbox1 ) ),
4437                                         strlen( $this->textbox1 )
4438                                 ]
4439                         );
4440                 }
4441         }
4442
4443         /**
4444          * @since 1.29
4445          */
4446         protected function addPageProtectionWarningHeaders() {
4447                 $out = $this->context->getOutput();
4448                 if ( $this->mTitle->isProtected( 'edit' ) &&
4449                         MediaWikiServices::getInstance()->getNamespaceInfo()->getRestrictionLevels(
4450                                 $this->mTitle->getNamespace()
4451                         ) !== [ '' ]
4452                 ) {
4453                         # Is the title semi-protected?
4454                         if ( $this->mTitle->isSemiProtected() ) {
4455                                 $noticeMsg = 'semiprotectedpagewarning';
4456                         } else {
4457                                 # Then it must be protected based on static groups (regular)
4458                                 $noticeMsg = 'protectedpagewarning';
4459                         }
4460                         LogEventsList::showLogExtract( $out, 'protect', $this->mTitle, '',
4461                                 [ 'lim' => 1, 'msgKey' => [ $noticeMsg ] ] );
4462                 }
4463                 if ( $this->mTitle->isCascadeProtected() ) {
4464                         # Is this page under cascading protection from some source pages?
4465                         /** @var Title[] $cascadeSources */
4466                         list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
4467                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
4468                         $cascadeSourcesCount = count( $cascadeSources );
4469                         if ( $cascadeSourcesCount > 0 ) {
4470                                 # Explain, and list the titles responsible
4471                                 foreach ( $cascadeSources as $page ) {
4472                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
4473                                 }
4474                         }
4475                         $notice .= '</div>';
4476                         $out->wrapWikiMsg( $notice, [ 'cascadeprotectedwarning', $cascadeSourcesCount ] );
4477                 }
4478                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
4479                         LogEventsList::showLogExtract( $out, 'protect', $this->mTitle, '',
4480                                 [ 'lim' => 1,
4481                                         'showIfEmpty' => false,
4482                                         'msgKey' => [ 'titleprotectedwarning' ],
4483                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ] );
4484                 }
4485         }
4486
4487         /**
4488          * @param OutputPage $out
4489          * @since 1.29
4490          */
4491         protected function addExplainConflictHeader( OutputPage $out ) {
4492                 $out->addHTML(
4493                         $this->getEditConflictHelper()->getExplainHeader()
4494                 );
4495         }
4496
4497         /**
4498          * @param string $name
4499          * @param mixed[] $customAttribs
4500          * @param User $user
4501          * @return mixed[]
4502          * @since 1.29
4503          */
4504         protected function buildTextboxAttribs( $name, array $customAttribs, User $user ) {
4505                 return ( new TextboxBuilder() )->buildTextboxAttribs(
4506                         $name, $customAttribs, $user, $this->mTitle
4507                 );
4508         }
4509
4510         /**
4511          * @param string $wikitext
4512          * @return string
4513          * @since 1.29
4514          */
4515         protected function addNewLineAtEnd( $wikitext ) {
4516                 return ( new TextboxBuilder() )->addNewLineAtEnd( $wikitext );
4517         }
4518
4519         /**
4520          * Turns section name wikitext into anchors for use in HTTP redirects. Various
4521          * versions of Microsoft browsers misinterpret fragment encoding of Location: headers
4522          * resulting in mojibake in address bar. Redirect them to legacy section IDs,
4523          * if possible. All the other browsers get HTML5 if the wiki is configured for it, to
4524          * spread the new style links more efficiently.
4525          *
4526          * @param string $text
4527          * @return string
4528          */
4529         private function guessSectionName( $text ) {
4530                 // Detect Microsoft browsers
4531                 $userAgent = $this->context->getRequest()->getHeader( 'User-Agent' );
4532                 $parser = MediaWikiServices::getInstance()->getParser();
4533                 if ( $userAgent && preg_match( '/MSIE|Edge/', $userAgent ) ) {
4534                         // ...and redirect them to legacy encoding, if available
4535                         return $parser->guessLegacySectionNameFromWikiText( $text );
4536                 }
4537                 // Meanwhile, real browsers get real anchors
4538                 $name = $parser->guessSectionNameFromWikiText( $text );
4539                 // With one little caveat: per T216029, fragments in HTTP redirects need to be urlencoded,
4540                 // otherwise Chrome double-escapes the rest of the URL.
4541                 return '#' . urlencode( mb_substr( $name, 1 ) );
4542         }
4543
4544         /**
4545          * Set a factory function to create an EditConflictHelper
4546          *
4547          * @param callable $factory Factory function
4548          * @since 1.31
4549          */
4550         public function setEditConflictHelperFactory( callable $factory ) {
4551                 $this->editConflictHelperFactory = $factory;
4552                 $this->editConflictHelper = null;
4553         }
4554
4555         /**
4556          * @return TextConflictHelper
4557          */
4558         private function getEditConflictHelper() {
4559                 if ( !$this->editConflictHelper ) {
4560                         $this->editConflictHelper = call_user_func(
4561                                 $this->editConflictHelperFactory,
4562                                 $this->getSubmitButtonLabel()
4563                         );
4564                 }
4565
4566                 return $this->editConflictHelper;
4567         }
4568
4569         /**
4570          * @param string $submitButtonLabel
4571          * @return TextConflictHelper
4572          */
4573         private function newTextConflictHelper( $submitButtonLabel ) {
4574                 return new TextConflictHelper(
4575                         $this->getTitle(),
4576                         $this->getContext()->getOutput(),
4577                         MediaWikiServices::getInstance()->getStatsdDataFactory(),
4578                         $submitButtonLabel
4579                 );
4580         }
4581 }