includes/EditPage.php

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