includes/EditPage.php

   1 <?php
   2 /**
   3  * Contains the EditPage class
   4  * @file
   5  */
   6
   7 /**
   8  * The edit page/HTML interface (split from Article)
   9  * The actual database and text munging is still in Article,
  10  * but it should get easier to call those from alternate
  11  * interfaces.
  12  *
  13  * EditPage cares about two distinct titles:
  14  * $this->mContextTitle is the page that forms submit to, links point to,
  15  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  16  * page in the database that is actually being edited. These are
  17  * usually the same, but they are now allowed to be different.
  18  *
  19  * Surgeon General's Warning: prolonged exposure to this class is known to cause
  20  * headaches, which may be fatal.
  21  */
  22 class EditPage {
  23         const AS_SUCCESS_UPDATE            = 200;
  24         const AS_SUCCESS_NEW_ARTICLE       = 201;
  25         const AS_HOOK_ERROR                = 210;
  26         const AS_FILTERING                 = 211;
  27         const AS_HOOK_ERROR_EXPECTED       = 212;
  28         const AS_BLOCKED_PAGE_FOR_USER     = 215;
  29         const AS_CONTENT_TOO_BIG           = 216;
  30         const AS_USER_CANNOT_EDIT          = 217;
  31         const AS_READ_ONLY_PAGE_ANON       = 218;
  32         const AS_READ_ONLY_PAGE_LOGGED     = 219;
  33         const AS_READ_ONLY_PAGE            = 220;
  34         const AS_RATE_LIMITED              = 221;
  35         const AS_ARTICLE_WAS_DELETED       = 222;
  36         const AS_NO_CREATE_PERMISSION      = 223;
  37         const AS_BLANK_ARTICLE             = 224;
  38         const AS_CONFLICT_DETECTED         = 225;
  39         const AS_SUMMARY_NEEDED            = 226;
  40         const AS_TEXTBOX_EMPTY             = 228;
  41         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
  42         const AS_OK                        = 230;
  43         const AS_END                       = 231;
  44         const AS_SPAM_ERROR                = 232;
  45         const AS_IMAGE_REDIRECT_ANON       = 233;
  46         const AS_IMAGE_REDIRECT_LOGGED     = 234;
  47
  48         /**
  49          * @var Article
  50          */
  51         var $mArticle;
  52
  53         /**
  54          * @var Title
  55          */
  56         var $mTitle;
  57         private $mContextTitle = null;
  58         var $action = 'submit';
  59         var $isConflict = false;
  60         var $isCssJsSubpage = false;
  61         var $isCssSubpage = false;
  62         var $isJsSubpage = false;
  63         var $isWrongCaseCssJsPage = false;
  64         var $isNew = false; // new page or new section
  65         var $deletedSinceEdit;
  66         var $formtype;
  67         var $firsttime;
  68         var $lastDelete;
  69         var $mTokenOk = false;
  70         var $mTokenOkExceptSuffix = false;
  71         var $mTriedSave = false;
  72         var $incompleteForm = false;
  73         var $tooBig = false;
  74         var $kblength = false;
  75         var $missingComment = false;
  76         var $missingSummary = false;
  77         var $allowBlankSummary = false;
  78         var $autoSumm = '';
  79         var $hookError = '';
  80         #var $mPreviewTemplates;
  81
  82         /**
  83          * @var ParserOutput
  84          */
  85         var $mParserOutput;
  86
  87         var $mBaseRevision = false;
  88         var $mShowSummaryField = true;
  89
  90         # Form values
  91         var $save = false, $preview = false, $diff = false;
  92         var $minoredit = false, $watchthis = false, $recreate = false;
  93         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
  94         var $edittime = '', $section = '', $starttime = '';
  95         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
  96
  97         # Placeholders for text injection by hooks (must be HTML)
  98         # extensions should take care to _append_ to the present value
  99         public $editFormPageTop = ''; // Before even the preview
 100         public $editFormTextTop = '';
 101         public $editFormTextBeforeContent = '';
 102         public $editFormTextAfterWarn = '';
 103         public $editFormTextAfterTools = '';
 104         public $editFormTextBottom = '';
 105         public $editFormTextAfterContent = '';
 106         public $previewTextAfterContent = '';
 107         public $mPreloadText = '';
 108
 109         /* $didSave should be set to true whenever an article was succesfully altered. */
 110         public $didSave = false;
 111         public $undidRev = 0;
 112
 113         public $suppressIntro = false;
 114
 115         /**
 116          * @todo document
 117          * @param $article Article
 118          */
 119         public function __construct( $article ) {
 120                 $this->mArticle = $article;
 121                 $this->mTitle = $article->getTitle();
 122         }
 123
 124         /**
 125          * @return Article
 126          */
 127         public function getArticle() {
 128                 return $this->mArticle;
 129         }
 130
 131         /**
 132          * @since 1.19
 133          * @return Title
 134          */
 135         public function getTitle() {
 136                 return $this->mTitle;
 137         }
 138
 139         /**
 140          * Set the context Title object
 141          *
 142          * @param $title Title object or null
 143          */
 144         public function setContextTitle( $title ) {
 145                 $this->mContextTitle = $title;
 146         }
 147
 148         /**
 149          * Get the context title object.
 150          * If not set, $wgTitle will be returned. This behavior might changed in
 151          * the future to return $this->mTitle instead.
 152          *
 153          * @return Title object
 154          */
 155         public function getContextTitle() {
 156                 if ( is_null( $this->mContextTitle ) ) {
 157                         global $wgTitle;
 158                         return $wgTitle;
 159                 } else {
 160                         return $this->mContextTitle;
 161                 }
 162         }
 163
 164         function submit() {
 165                 $this->edit();
 166         }
 167
 168         /**
 169          * This is the function that gets called for "action=edit". It
 170          * sets up various member variables, then passes execution to
 171          * another function, usually showEditForm()
 172          *
 173          * The edit form is self-submitting, so that when things like
 174          * preview and edit conflicts occur, we get the same form back
 175          * with the extra stuff added.  Only when the final submission
 176          * is made and all is well do we actually save and redirect to
 177          * the newly-edited page.
 178          */
 179         function edit() {
 180                 global $wgOut, $wgRequest, $wgUser;
 181                 // Allow extensions to modify/prevent this form or submission
 182                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 183                         return;
 184                 }
 185
 186                 wfProfileIn( __METHOD__ );
 187                 wfDebug( __METHOD__.": enter\n" );
 188
 189                 // If they used redlink=1 and the page exists, redirect to the main article
 190                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 191                         $wgOut->redirect( $this->mTitle->getFullURL() );
 192                         wfProfileOut( __METHOD__ );
 193                         return;
 194                 }
 195
 196                 $this->importFormData( $wgRequest );
 197                 $this->firsttime = false;
 198
 199                 if ( $this->live ) {
 200                         $this->livePreview();
 201                         wfProfileOut( __METHOD__ );
 202                         return;
 203                 }
 204
 205                 if ( wfReadOnly() && $this->save ) {
 206                         // Force preview
 207                         $this->save = false;
 208                         $this->preview = true;
 209                 }
 210
 211                 if ( $this->save ) {
 212                         $this->formtype = 'save';
 213                 } elseif ( $this->preview ) {
 214                         $this->formtype = 'preview';
 215                 } elseif ( $this->diff ) {
 216                         $this->formtype = 'diff';
 217                 } else { # First time through
 218                         $this->firsttime = true;
 219                         if ( $this->previewOnOpen() ) {
 220                                 $this->formtype = 'preview';
 221                         } else {
 222                                 $this->formtype = 'initial';
 223                         }
 224                 }
 225
 226                 $permErrors = $this->getEditPermissionErrors();
 227                 if ( $permErrors ) {
 228                         wfDebug( __METHOD__ . ": User can't edit\n" );
 229                         // Auto-block user's IP if the account was "hard" blocked
 230                         $wgUser->spreadAnyEditBlock();
 231
 232                         $this->displayPermissionsError( $permErrors );
 233
 234                         wfProfileOut( __METHOD__ );
 235                         return;
 236                 }
 237
 238                 $wgOut->addModules( array( 'mediawiki.action.edit' ) );
 239
 240                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
 241                         $wgOut->addModules( 'mediawiki.legacy.preview' );
 242                 }
 243                 // Bug #19334: textarea jumps when editing articles in IE8
 244                 $wgOut->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
 245
 246                 wfProfileIn( __METHOD__."-business-end" );
 247
 248                 $this->isConflict = false;
 249                 // css / js subpages of user pages get a special treatment
 250                 $this->isCssJsSubpage       = $this->mTitle->isCssJsSubpage();
 251                 $this->isCssSubpage         = $this->mTitle->isCssSubpage();
 252                 $this->isJsSubpage          = $this->mTitle->isJsSubpage();
 253                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 254                 $this->isNew                = !$this->mTitle->exists() || $this->section == 'new';
 255
 256                 # Show applicable editing introductions
 257                 if ( $this->formtype == 'initial' || $this->firsttime )
 258                         $this->showIntro();
 259
 260                 if ( $this->mTitle->isTalkPage() ) {
 261                         $wgOut->addWikiMsg( 'talkpagetext' );
 262                 }
 263
 264                 # Optional notices on a per-namespace and per-page basis
 265                 $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
 266                 $editnotice_ns_message = wfMessage( $editnotice_ns )->inContentLanguage();
 267                 if ( $editnotice_ns_message->exists() ) {
 268                         $wgOut->addWikiText( $editnotice_ns_message->plain() );
 269                 }
 270                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
 271                         $parts = explode( '/', $this->mTitle->getDBkey() );
 272                         $editnotice_base = $editnotice_ns;
 273                         while ( count( $parts ) > 0 ) {
 274                                 $editnotice_base .= '-'.array_shift( $parts );
 275                                 $editnotice_base_msg = wfMessage( $editnotice_base )->inContentLanguage();
 276                                 if ( $editnotice_base_msg->exists() ) {
 277                                         $wgOut->addWikiText( $editnotice_base_msg->plain()  );
 278                                 }
 279                         }
 280                 } else {
 281                         # Even if there are no subpages in namespace, we still don't want / in MW ns.
 282                         $editnoticeText = $editnotice_ns . '-' . str_replace( '/', '-', $this->mTitle->getDBkey() );
 283                         $editnoticeMsg = wfMessage( $editnoticeText )->inContentLanguage();
 284                         if ( $editnoticeMsg->exists() ) {
 285                                 $wgOut->addWikiText( $editnoticeMsg->plain() );
 286                         }
 287                 }
 288
 289                 # Attempt submission here.  This will check for edit conflicts,
 290                 # and redundantly check for locked database, blocked IPs, etc.
 291                 # that edit() already checked just in case someone tries to sneak
 292                 # in the back door with a hand-edited submission URL.
 293
 294                 if ( 'save' == $this->formtype ) {
 295                         if ( !$this->attemptSave() ) {
 296                                 wfProfileOut( __METHOD__."-business-end" );
 297                                 wfProfileOut( __METHOD__ );
 298                                 return;
 299                         }
 300                 }
 301
 302                 # First time through: get contents, set time for conflict
 303                 # checking, etc.
 304                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 305                         if ( $this->initialiseForm() === false ) {
 306                                 $this->noSuchSectionPage();
 307                                 wfProfileOut( __METHOD__."-business-end" );
 308                                 wfProfileOut( __METHOD__ );
 309                                 return;
 310                         }
 311                         if ( !$this->mTitle->getArticleId() )
 312                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 313                         else
 314                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 315                 }
 316
 317                 $this->showEditForm();
 318                 wfProfileOut( __METHOD__."-business-end" );
 319                 wfProfileOut( __METHOD__ );
 320         }
 321
 322         /**
 323          * @return array
 324          */
 325         protected function getEditPermissionErrors() {
 326                 global $wgUser;
 327                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 328                 # Can this title be created?
 329                 if ( !$this->mTitle->exists() ) {
 330                         $permErrors = array_merge( $permErrors,
 331                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 332                 }
 333                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 334                 $remove = array();
 335                 foreach( $permErrors as $error ) {
 336                         if ( ( $this->preview || $this->diff ) &&
 337                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 338                         {
 339                                 $remove[] = $error;
 340                         }
 341                 }
 342                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 343                 return $permErrors;
 344         }
 345
 346         /**
 347          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 348          * but with the following differences:
 349          * - If redlink=1, the user will be redirect to the page
 350          * - If there is content to display or the error occurs while either saving,
 351          *   previewing or showing the difference, it will be a
 352          *   "View source for ..." page displaying the source code after the error message.
 353          *
 354          * @since 1.19
 355          * @param $permErrors Array of permissions errors, as returned by
 356          *                    Title::getUserPermissionsErrors().
 357          */
 358         protected function displayPermissionsError( array $permErrors ) {
 359                 global $wgRequest, $wgOut;
 360
 361                 if ( $wgRequest->getBool( 'redlink' ) ) {
 362                         // The edit page was reached via a red link.
 363                         // Redirect to the article page and let them click the edit tab if
 364                         // they really want a permission error.
 365                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 366                         return;
 367                 }
 368
 369                 $content = $this->getContent();
 370
 371                 # Use the normal message if there's nothing to display
 372                 if ( $this->firsttime && $content === '' ) {
 373                         $action = $this->mTitle->exists() ? 'edit' :
 374                                 ( $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 375                         throw new PermissionsError( $action, $permErrors );
 376                 }
 377
 378                 $wgOut->setPageTitle( wfMessage( 'viewsource-title', $this->getContextTitle()->getPrefixedText() ) );
 379                 $wgOut->addBacklinkSubtitle( $this->getContextTitle() );
 380                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $permErrors, 'edit' ) );
 381                 $wgOut->addHTML( "<hr />\n" );
 382
 383                 # If the user made changes, preserve them when showing the markup
 384                 # (This happens when a user is blocked during edit, for instance)
 385                 if ( !$this->firsttime ) {
 386                         $content = $this->textbox1;
 387                         $wgOut->addWikiMsg( 'viewyourtext' );
 388                 } else {
 389                         $wgOut->addWikiMsg( 'viewsourcetext' );
 390                 }
 391
 392                 $this->showTextbox( $content, 'wpTextbox1', array( 'readonly' ) );
 393
 394                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 395                         Linker::formatTemplates( $this->getTemplates() ) ) );
 396
 397                 if ( $this->mTitle->exists() ) {
 398                         $wgOut->returnToMain( null, $this->mTitle );
 399                 }
 400         }
 401
 402         /**
 403          * Show a read-only error
 404          * Parameters are the same as OutputPage:readOnlyPage()
 405          * Redirect to the article page if redlink=1
 406          * @deprecated in 1.19; use displayPermissionsError() instead
 407          */
 408         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 409                 wfDeprecated( __METHOD__, '1.19' );
 410
 411                 global $wgRequest, $wgOut;
 412                 if ( $wgRequest->getBool( 'redlink' ) ) {
 413                         // The edit page was reached via a red link.
 414                         // Redirect to the article page and let them click the edit tab if
 415                         // they really want a permission error.
 416                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 417                 } else {
 418                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 419                 }
 420         }
 421
 422         /**
 423          * Should we show a preview when the edit form is first shown?
 424          *
 425          * @return bool
 426          */
 427         protected function previewOnOpen() {
 428                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 429                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 430                         // Explicit override from request
 431                         return true;
 432                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 433                         // Explicit override from request
 434                         return false;
 435                 } elseif ( $this->section == 'new' ) {
 436                         // Nothing *to* preview for new sections
 437                         return false;
 438                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 439                         // Standard preference behaviour
 440                         return true;
 441                 } elseif ( !$this->mTitle->exists() &&
 442                   isset($wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()]) &&
 443                   $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 444                 {
 445                         // Categories are special
 446                         return true;
 447                 } else {
 448                         return false;
 449                 }
 450         }
 451
 452         /**
 453          * Checks whether the user entered a skin name in uppercase,
 454          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 455          *
 456          * @return bool
 457          */
 458         protected function isWrongCaseCssJsPage() {
 459                 if( $this->mTitle->isCssJsSubpage() ) {
 460                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 461                         $skins = array_merge(
 462                                 array_keys( Skin::getSkinNames() ),
 463                                 array( 'common' )
 464                         );
 465                         return !in_array( $name, $skins )
 466                                 && in_array( strtolower( $name ), $skins );
 467                 } else {
 468                         return false;
 469                 }
 470         }
 471
 472         /**
 473          * Does this EditPage class support section editing?
 474          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 475          *
 476          * @return bool
 477          */
 478         protected function isSectionEditSupported() {
 479                 return true;
 480         }
 481
 482         /**
 483          * @todo document
 484          * @param $request WebRequest
 485          */
 486         function importFormData( &$request ) {
 487                 global $wgLang, $wgUser;
 488
 489                 wfProfileIn( __METHOD__ );
 490
 491                 # Section edit can come from either the form or a link
 492                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 493
 494                 if ( $request->wasPosted() ) {
 495                         # These fields need to be checked for encoding.
 496                         # Also remove trailing whitespace, but don't remove _initial_
 497                         # whitespace from the text boxes. This may be significant formatting.
 498                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 499                         if ( !$request->getCheck('wpTextbox2') ) {
 500                                 // Skip this if wpTextbox2 has input, it indicates that we came
 501                                 // from a conflict page with raw page text, not a custom form
 502                                 // modified by subclasses
 503                                 wfProfileIn( get_class($this)."::importContentFormData" );
 504                                 $textbox1 = $this->importContentFormData( $request );
 505                                 if ( isset($textbox1) )
 506                                         $this->textbox1 = $textbox1;
 507                                 wfProfileOut( get_class($this)."::importContentFormData" );
 508                         }
 509
 510                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 511                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250 );
 512
 513                         # Remove extra headings from summaries and new sections.
 514                         $this->summary = preg_replace('/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary);
 515
 516                         $this->edittime = $request->getVal( 'wpEdittime' );
 517                         $this->starttime = $request->getVal( 'wpStarttime' );
 518
 519                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 520
 521                         if ($this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null) {
 522                                 // wpTextbox1 field is missing, possibly due to being "too big"
 523                                 // according to some filter rules such as Suhosin's setting for
 524                                 // suhosin.request.max_value_length (d'oh)
 525                                 $this->incompleteForm = true;
 526                         } else {
 527                                 // edittime should be one of our last fields; if it's missing,
 528                                 // the submission probably broke somewhere in the middle.
 529                                 $this->incompleteForm = is_null( $this->edittime );
 530                         }
 531                         if ( $this->incompleteForm ) {
 532                                 # If the form is incomplete, force to preview.
 533                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 534                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 535                                 $this->preview = true;
 536                         } else {
 537                                 /* Fallback for live preview */
 538                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 539                                 $this->diff = $request->getCheck( 'wpDiff' );
 540
 541                                 // Remember whether a save was requested, so we can indicate
 542                                 // if we forced preview due to session failure.
 543                                 $this->mTriedSave = !$this->preview;
 544
 545                                 if ( $this->tokenOk( $request ) ) {
 546                                         # Some browsers will not report any submit button
 547                                         # if the user hits enter in the comment box.
 548                                         # The unmarked state will be assumed to be a save,
 549                                         # if the form seems otherwise complete.
 550                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 551                                 } elseif ( $this->diff ) {
 552                                         # Failed token check, but only requested "Show Changes".
 553                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 554                                 } else {
 555                                         # Page might be a hack attempt posted from
 556                                         # an external site. Preview instead of saving.
 557                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 558                                         $this->preview = true;
 559                                 }
 560                         }
 561                         $this->save = !$this->preview && !$this->diff;
 562                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 563                                 $this->edittime = null;
 564                         }
 565
 566                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 567                                 $this->starttime = null;
 568                         }
 569
 570                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 571
 572                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 573                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 574
 575                         # Don't force edit summaries when a user is editing their own user or talk page
 576                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 577                                 $this->mTitle->getText() == $wgUser->getName() )
 578                         {
 579                                 $this->allowBlankSummary = true;
 580                         } else {
 581                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
 582                         }
 583
 584                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 585                 } else {
 586                         # Not a posted form? Start with nothing.
 587                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 588                         $this->textbox1  = '';
 589                         $this->summary   = '';
 590                         $this->edittime  = '';
 591                         $this->starttime = wfTimestampNow();
 592                         $this->edit      = false;
 593                         $this->preview   = false;
 594                         $this->save      = false;
 595                         $this->diff      = false;
 596                         $this->minoredit = false;
 597                         $this->watchthis = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 598                         $this->recreate  = false;
 599
 600                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 601                                 $this->summary = $request->getVal( 'preloadtitle' );
 602                         }
 603                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 604                                 $this->summary = $request->getText( 'summary' );
 605                         }
 606
 607                         if ( $request->getVal( 'minor' ) ) {
 608                                 $this->minoredit = true;
 609                         }
 610                 }
 611
 612                 $this->bot = $request->getBool( 'bot', true );
 613                 $this->nosummary = $request->getBool( 'nosummary' );
 614
 615                 // @todo FIXME: Unused variable?
 616                 $this->oldid = $request->getInt( 'oldid' );
 617
 618                 $this->live = $request->getCheck( 'live' );
 619                 $this->editintro = $request->getText( 'editintro',
 620                         // Custom edit intro for new sections
 621                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 622
 623                 // Allow extensions to modify form data
 624                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 625
 626                 wfProfileOut( __METHOD__ );
 627         }
 628
 629         /**
 630          * Subpage overridable method for extracting the page content data from the
 631          * posted form to be placed in $this->textbox1, if using customized input
 632          * this method should be overrided and return the page text that will be used
 633          * for saving, preview parsing and so on...
 634          *
 635          * @param $request WebRequest
 636          */
 637         protected function importContentFormData( &$request ) {
 638                 return; // Don't do anything, EditPage already extracted wpTextbox1
 639         }
 640
 641         /**
 642          * Initialise form fields in the object
 643          * Called on the first invocation, e.g. when a user clicks an edit link
 644          * @return bool -- if the requested section is valid
 645          */
 646         function initialiseForm() {
 647                 global $wgUser;
 648                 $this->edittime = $this->mArticle->getTimestamp();
 649                 $this->textbox1 = $this->getContent( false );
 650                 // activate checkboxes if user wants them to be always active
 651                 # Sort out the "watch" checkbox
 652                 if ( $wgUser->getOption( 'watchdefault' ) ) {
 653                         # Watch all edits
 654                         $this->watchthis = true;
 655                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 656                         # Watch creations
 657                         $this->watchthis = true;
 658                 } elseif ( $this->mTitle->userIsWatching() ) {
 659                         # Already watched
 660                         $this->watchthis = true;
 661                 }
 662                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) {
 663                         $this->minoredit = true;
 664                 }
 665                 if ( $this->textbox1 === false ) {
 666                         return false;
 667                 }
 668                 wfProxyCheck();
 669                 return true;
 670         }
 671
 672         /**
 673          * Fetch initial editing page content.
 674          *
 675          * @param $def_text string
 676          * @return mixed string on success, $def_text for invalid sections
 677          * @private
 678          */
 679         function getContent( $def_text = '' ) {
 680                 global $wgOut, $wgRequest, $wgParser;
 681
 682                 wfProfileIn( __METHOD__ );
 683                 # Get variables from query string :P
 684                 $section = $wgRequest->getVal( 'section' );
 685
 686                 $preload = $wgRequest->getVal( 'preload',
 687                         // Custom preload text for new sections
 688                         $section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 689                 $undoafter = $wgRequest->getVal( 'undoafter' );
 690                 $undo = $wgRequest->getVal( 'undo' );
 691
 692                 // For message page not locally set, use the i18n message.
 693                 // For other non-existent articles, use preload text if any.
 694                 if ( !$this->mTitle->exists() ) {
 695                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 696                                 # If this is a system message, get the default text.
 697                                 $text = $this->mTitle->getDefaultMessageText();
 698                                 if( $text === false ) {
 699                                         $text = $this->getPreloadedText( $preload );
 700                                 }
 701                         } else {
 702                                 # If requested, preload some text.
 703                                 $text = $this->getPreloadedText( $preload );
 704                         }
 705                 // For existing pages, get text based on "undo" or section parameters.
 706                 } else {
 707                         $text = $this->mArticle->getContent();
 708                         if ( $undo > 0 && $undoafter > 0 && $undo < $undoafter ) {
 709                                 # If they got undoafter and undo round the wrong way, switch them
 710                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 711                         }
 712                         if ( $undo > 0 && $undo > $undoafter ) {
 713                                 # Undoing a specific edit overrides section editing; section-editing
 714                                 # doesn't work with undoing.
 715                                 if ( $undoafter ) {
 716                                         $undorev = Revision::newFromId( $undo );
 717                                         $oldrev = Revision::newFromId( $undoafter );
 718                                 } else {
 719                                         $undorev = Revision::newFromId( $undo );
 720                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 721                                 }
 722
 723                                 # Sanity check, make sure it's the right page,
 724                                 # the revisions exist and they were not deleted.
 725                                 # Otherwise, $text will be left as-is.
 726                                 if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 727                                         $undorev->getPage() == $oldrev->getPage() &&
 728                                         $undorev->getPage() == $this->mArticle->getID() &&
 729                                         !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 730                                         !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 731
 732                                         $undotext = $this->mArticle->getUndoText( $undorev, $oldrev );
 733                                         if ( $undotext === false ) {
 734                                                 # Warn the user that something went wrong
 735                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-failure">' .
 736                                                         wfMsgNoTrans( 'undo-failure' ) . '</div>', true, /* interface */true );
 737                                         } else {
 738                                                 $text = $undotext;
 739                                                 # Inform the user of our success and set an automatic edit summary
 740                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="mw-undo-success">' .
 741                                                         wfMsgNoTrans( 'undo-success' ) . '</div>', true, /* interface */true );
 742                                                 $firstrev = $oldrev->getNext();
 743                                                 # If we just undid one rev, use an autosummary
 744                                                 if ( $firstrev->getId() == $undo ) {
 745                                                         $undoSummary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 746                                                         if ( $this->summary === '' ) {
 747                                                                 $this->summary = $undoSummary;
 748                                                         } else {
 749                                                                 $this->summary = $undoSummary . wfMsgForContent( 'colon-separator' ) . $this->summary;
 750                                                         }
 751                                                         $this->undidRev = $undo;
 752                                                 }
 753                                                 $this->formtype = 'diff';
 754                                         }
 755                                 } else {
 756                                         // Failed basic sanity checks.
 757                                         // Older revisions may have been removed since the link
 758                                         // was created, or we may simply have got bogus input.
 759                                         $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-norev">' .
 760                                                 wfMsgNoTrans( 'undo-norev' ) . '</div>', true, /* interface */true );
 761                                 }
 762                         } elseif ( $section != '' ) {
 763                                 if ( $section == 'new' ) {
 764                                         $text = $this->getPreloadedText( $preload );
 765                                 } else {
 766                                         // Get section edit text (returns $def_text for invalid sections)
 767                                         $text = $wgParser->getSection( $text, $section, $def_text );
 768                                 }
 769                         }
 770                 }
 771
 772                 wfProfileOut( __METHOD__ );
 773                 return $text;
 774         }
 775
 776         /**
 777          * Use this method before edit() to preload some text into the edit box
 778          *
 779          * @param $text string
 780          */
 781         public function setPreloadedText( $text ) {
 782                 $this->mPreloadText = $text;
 783         }
 784
 785         /**
 786          * Get the contents to be preloaded into the box, either set by
 787          * an earlier setPreloadText() or by loading the given page.
 788          *
 789          * @param $preload String: representing the title to preload from.
 790          * @return String
 791          */
 792         protected function getPreloadedText( $preload ) {
 793                 global $wgUser, $wgParser;
 794
 795                 if ( !empty( $this->mPreloadText ) ) {
 796                         return $this->mPreloadText;
 797                 }
 798
 799                 if ( $preload === '' ) {
 800                         return '';
 801                 }
 802
 803                 $title = Title::newFromText( $preload );
 804                 # Check for existence to avoid getting MediaWiki:Noarticletext
 805                 if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 806                         return '';
 807                 }
 808
 809                 $page = WikiPage::factory( $title );
 810                 if ( $page->isRedirect() ) {
 811                         $title = $page->getRedirectTarget();
 812                         # Same as before
 813                         if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 814                                 return '';
 815                         }
 816                         $page = WikiPage::factory( $title );
 817                 }
 818
 819                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 820                 return $wgParser->getPreloadText( $page->getRawText(), $title, $parserOptions );
 821         }
 822
 823         /**
 824          * Make sure the form isn't faking a user's credentials.
 825          *
 826          * @param $request WebRequest
 827          * @return bool
 828          * @private
 829          */
 830         function tokenOk( &$request ) {
 831                 global $wgUser;
 832                 $token = $request->getVal( 'wpEditToken' );
 833                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 834                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 835                 return $this->mTokenOk;
 836         }
 837
 838         /**
 839          * Attempt submission
 840          * @return bool false if output is done, true if the rest of the form should be displayed
 841          */
 842         function attemptSave() {
 843                 global $wgUser, $wgOut;
 844
 845                 $resultDetails = false;
 846                 # Allow bots to exempt some edits from bot flagging
 847                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
 848                 $status = $this->internalAttemptSave( $resultDetails, $bot );
 849                 // FIXME: once the interface for internalAttemptSave() is made nicer, this should use the message in $status
 850
 851                 if ( $status->value == self::AS_SUCCESS_UPDATE || $status->value == self::AS_SUCCESS_NEW_ARTICLE ) {
 852                         $this->didSave = true;
 853                 }
 854
 855                 switch ( $status->value ) {
 856                         case self::AS_HOOK_ERROR_EXPECTED:
 857                         case self::AS_CONTENT_TOO_BIG:
 858                         case self::AS_ARTICLE_WAS_DELETED:
 859                         case self::AS_CONFLICT_DETECTED:
 860                         case self::AS_SUMMARY_NEEDED:
 861                         case self::AS_TEXTBOX_EMPTY:
 862                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
 863                         case self::AS_END:
 864                                 return true;
 865
 866                         case self::AS_HOOK_ERROR:
 867                         case self::AS_FILTERING:
 868                                 return false;
 869
 870                         case self::AS_SUCCESS_NEW_ARTICLE:
 871                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
 872                                 $anchor = isset ( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
 873                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
 874                                 return false;
 875
 876                         case self::AS_SUCCESS_UPDATE:
 877                                 $extraQuery = '';
 878                                 $sectionanchor = $resultDetails['sectionanchor'];
 879
 880                                 // Give extensions a chance to modify URL query on update
 881                                 wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this->mArticle, &$sectionanchor, &$extraQuery ) );
 882
 883                                 if ( $resultDetails['redirect'] ) {
 884                                         if ( $extraQuery == '' ) {
 885                                                 $extraQuery = 'redirect=no';
 886                                         } else {
 887                                                 $extraQuery = 'redirect=no&' . $extraQuery;
 888                                         }
 889                                 }
 890                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
 891                                 return false;
 892
 893                         case self::AS_BLANK_ARTICLE:
 894                                 $wgOut->redirect( $this->getContextTitle()->getFullURL() );
 895                                 return false;
 896
 897                         case self::AS_SPAM_ERROR:
 898                                 $this->spamPageWithContent( $resultDetails['spam'] );
 899                                 return false;
 900
 901                         case self::AS_BLOCKED_PAGE_FOR_USER:
 902                                 throw new UserBlockedError( $wgUser->mBlock );
 903
 904                         case self::AS_IMAGE_REDIRECT_ANON:
 905                         case self::AS_IMAGE_REDIRECT_LOGGED:
 906                                 throw new PermissionsError( 'upload' );
 907
 908                         case self::AS_READ_ONLY_PAGE_ANON:
 909                         case self::AS_READ_ONLY_PAGE_LOGGED:
 910                                 throw new PermissionsError( 'edit' );
 911
 912                         case self::AS_READ_ONLY_PAGE:
 913                                 throw new ReadOnlyError;
 914
 915                         case self::AS_RATE_LIMITED:
 916                                 throw new ThrottledError();
 917
 918                         case self::AS_NO_CREATE_PERMISSION:
 919                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
 920                                 throw new PermissionsError( $permission );
 921
 922                 }
 923                 return false;
 924         }
 925
 926         /**
 927          * Attempt submission (no UI)
 928          *
 929          * @param $result
 930          * @param $bot bool
 931          *
 932          * @return Status object, possibly with a message, but always with one of the AS_* constants in $status->value,
 933          *
 934          * FIXME: This interface is TERRIBLE, but hard to get rid of due to various error display idiosyncrasies. There are
 935          * also lots of cases where error metadata is set in the object and retrieved later instead of being returned, e.g.
 936          * AS_CONTENT_TOO_BIG and AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some time.
 937          */
 938         function internalAttemptSave( &$result, $bot = false ) {
 939                 global $wgFilterCallback, $wgUser, $wgRequest, $wgParser;
 940                 global $wgMaxArticleSize;
 941
 942                 $status = Status::newGood();
 943
 944                 wfProfileIn( __METHOD__  );
 945                 wfProfileIn( __METHOD__ . '-checks' );
 946
 947                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
 948                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
 949                         $status->fatal( 'hookaborted' );
 950                         $status->value = self::AS_HOOK_ERROR;
 951                         wfProfileOut( __METHOD__ . '-checks' );
 952                         wfProfileOut( __METHOD__  );
 953                         return $status;
 954                 }
 955
 956                 # Check image redirect
 957                 if ( $this->mTitle->getNamespace() == NS_FILE &&
 958                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 959                         !$wgUser->isAllowed( 'upload' ) ) {
 960                                 $code = $wgUser->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
 961                                 $status->setResult( false, $code );
 962
 963                                 wfProfileOut( __METHOD__ . '-checks' );
 964                                 wfProfileOut( __METHOD__  );
 965
 966                                 return $status;
 967                 }
 968
 969                 # Check for spam
 970                 $match = self::matchSummarySpamRegex( $this->summary );
 971                 if ( $match === false ) {
 972                         $match = self::matchSpamRegex( $this->textbox1 );
 973                 }
 974                 if ( $match !== false ) {
 975                         $result['spam'] = $match;
 976                         $ip = $wgRequest->getIP();
 977                         $pdbk = $this->mTitle->getPrefixedDBkey();
 978                         $match = str_replace( "\n", '', $match );
 979                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
 980                         $status->fatal( 'spamprotectionmatch', $match );
 981                         $status->value = self::AS_SPAM_ERROR;
 982                         wfProfileOut( __METHOD__ . '-checks' );
 983                         wfProfileOut( __METHOD__ );
 984                         return $status;
 985                 }
 986                 if ( $wgFilterCallback && is_callable( $wgFilterCallback ) && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
 987                         # Error messages or other handling should be performed by the filter function
 988                         $status->setResult( false, self::AS_FILTERING );
 989                         wfProfileOut( __METHOD__ . '-checks' );
 990                         wfProfileOut( __METHOD__ );
 991                         return $status;
 992                 }
 993                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
 994                         # Error messages etc. could be handled within the hook...
 995                         $status->fatal( 'hookaborted' );
 996                         $status->value = self::AS_HOOK_ERROR;
 997                         wfProfileOut( __METHOD__ . '-checks' );
 998                         wfProfileOut( __METHOD__ );
 999                         return $status;
1000                 } elseif ( $this->hookError != '' ) {
1001                         # ...or the hook could be expecting us to produce an error
1002                         $status->fatal( 'hookaborted' );
1003                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1004                         wfProfileOut( __METHOD__ . '-checks' );
1005                         wfProfileOut( __METHOD__ );
1006                         return $status;
1007                 }
1008
1009                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
1010                         // Auto-block user's IP if the account was "hard" blocked
1011                         $wgUser->spreadAnyEditBlock();
1012                         # Check block state against master, thus 'false'.
1013                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1014                         wfProfileOut( __METHOD__ . '-checks' );
1015                         wfProfileOut( __METHOD__ );
1016                         return $status;
1017                 }
1018
1019                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1020                 if ( $this->kblength > $wgMaxArticleSize ) {
1021                         // Error will be displayed by showEditForm()
1022                         $this->tooBig = true;
1023                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1024                         wfProfileOut( __METHOD__ . '-checks' );
1025                         wfProfileOut( __METHOD__ );
1026                         return $status;
1027                 }
1028
1029                 if ( !$wgUser->isAllowed( 'edit' ) ) {
1030                         if ( $wgUser->isAnon() ) {
1031                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1032                                 wfProfileOut( __METHOD__ . '-checks' );
1033                                 wfProfileOut( __METHOD__ );
1034                                 return $status;
1035                         } else {
1036                                 $status->fatal( 'readonlytext' );
1037                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1038                                 wfProfileOut( __METHOD__ . '-checks' );
1039                                 wfProfileOut( __METHOD__ );
1040                                 return $status;
1041                         }
1042                 }
1043
1044                 if ( wfReadOnly() ) {
1045                         $status->fatal( 'readonlytext' );
1046                         $status->value = self::AS_READ_ONLY_PAGE;
1047                         wfProfileOut( __METHOD__ . '-checks' );
1048                         wfProfileOut( __METHOD__ );
1049                         return $status;
1050                 }
1051                 if ( $wgUser->pingLimiter() ) {
1052                         $status->fatal( 'actionthrottledtext' );
1053                         $status->value = self::AS_RATE_LIMITED;
1054                         wfProfileOut( __METHOD__ . '-checks' );
1055                         wfProfileOut( __METHOD__ );
1056                         return $status;
1057                 }
1058
1059                 # If the article has been deleted while editing, don't save it without
1060                 # confirmation
1061                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1062                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1063                         wfProfileOut( __METHOD__ . '-checks' );
1064                         wfProfileOut( __METHOD__ );
1065                         return $status;
1066                 }
1067
1068                 wfProfileOut( __METHOD__ . '-checks' );
1069
1070                 # If article is new, insert it.
1071                 $aid = $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
1072                 $new = ( $aid == 0 );
1073
1074                 if ( $new ) {
1075                         // Late check for create permission, just in case *PARANOIA*
1076                         if ( !$this->mTitle->userCan( 'create' ) ) {
1077                                 $status->fatal( 'nocreatetext' );
1078                                 $status->value = self::AS_NO_CREATE_PERMISSION;
1079                                 wfDebug( __METHOD__ . ": no create permission\n" );
1080                                 wfProfileOut( __METHOD__ );
1081                                 return $status;
1082                         }
1083
1084                         # Don't save a new article if it's blank.
1085                         if ( $this->textbox1 == '' ) {
1086                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
1087                                 wfProfileOut( __METHOD__ );
1088                                 return $status;
1089                         }
1090
1091                         // Run post-section-merge edit filter
1092                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
1093                                 # Error messages etc. could be handled within the hook...
1094                                 $status->fatal( 'hookaborted' );
1095                                 $status->value = self::AS_HOOK_ERROR;
1096                                 wfProfileOut( __METHOD__ );
1097                                 return $status;
1098                         } elseif ( $this->hookError != '' ) {
1099                                 # ...or the hook could be expecting us to produce an error
1100                                 $status->fatal( 'hookaborted' );
1101                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1102                                 wfProfileOut( __METHOD__ );
1103                                 return $status;
1104                         }
1105
1106                         # Handle the user preference to force summaries here. Check if it's not a redirect.
1107                         if ( !$this->allowBlankSummary && !Title::newFromRedirect( $this->textbox1 ) ) {
1108                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1109                                         $this->missingSummary = true;
1110                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1111                                         $status->value = self::AS_SUMMARY_NEEDED;
1112                                         wfProfileOut( __METHOD__ );
1113                                         return $status;
1114                                 }
1115                         }
1116
1117                         $text = $this->textbox1;
1118                         $result['sectionanchor'] == '';
1119                         if ( $this->section == 'new' && $this->summary != '' ) {
1120                                 $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $text;
1121
1122                                 # Jump to the new section
1123                                 $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1124
1125                                 # This is a new section, so create a link to the new section
1126                                 # in the revision summary.
1127                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
1128                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1129                         }
1130
1131                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1132
1133                 } else {
1134
1135                         # Article exists. Check for edit conflict.
1136
1137                         $this->mArticle->clear(); # Force reload of dates, etc.
1138
1139                         wfDebug( "timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n" );
1140
1141                         if ( $this->mArticle->getTimestamp() != $this->edittime ) {
1142                                 $this->isConflict = true;
1143                                 if ( $this->section == 'new' ) {
1144                                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1145                                                 $this->mArticle->getComment() == $this->summary ) {
1146                                                 // Probably a duplicate submission of a new comment.
1147                                                 // This can happen when squid resends a request after
1148                                                 // a timeout but the first one actually went through.
1149                                                 wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
1150                                         } else {
1151                                                 // New comment; suppress conflict.
1152                                                 $this->isConflict = false;
1153                                                 wfDebug( __METHOD__ .": conflict suppressed; new section\n" );
1154                                         }
1155                                 } elseif ( $this->section == '' && $this->userWasLastToEdit( $wgUser->getId(), $this->edittime ) ) {
1156                                         # Suppress edit conflict with self, except for section edits where merging is required.
1157                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1158                                         $this->isConflict = false;
1159                                 }
1160                         }
1161
1162                         if ( $this->isConflict ) {
1163                                 wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
1164                                         $this->mArticle->getTimestamp() . "')\n" );
1165                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime );
1166                         } else {
1167                                 wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
1168                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary );
1169                         }
1170                         if ( is_null( $text ) ) {
1171                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1172                                 $this->isConflict = true;
1173                                 $text = $this->textbox1; // do not try to merge here!
1174                         } elseif ( $this->isConflict ) {
1175                                 # Attempt merge
1176                                 if ( $this->mergeChangesInto( $text ) ) {
1177                                         // Successful merge! Maybe we should tell the user the good news?
1178                                         $this->isConflict = false;
1179                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1180                                 } else {
1181                                         $this->section = '';
1182                                         $this->textbox1 = $text;
1183                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1184                                 }
1185                         }
1186
1187                         if ( $this->isConflict ) {
1188                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
1189                                 wfProfileOut( __METHOD__ );
1190                                 return $status;
1191                         }
1192
1193                         // Run post-section-merge edit filter
1194                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
1195                                 # Error messages etc. could be handled within the hook...
1196                                 $status->fatal( 'hookaborted' );
1197                                 $status->value = self::AS_HOOK_ERROR;
1198                                 wfProfileOut( __METHOD__ );
1199                                 return $status;
1200                         } elseif ( $this->hookError != '' ) {
1201                                 # ...or the hook could be expecting us to produce an error
1202                                 $status->fatal( 'hookaborted' );
1203                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1204                                 wfProfileOut( __METHOD__ );
1205                                 return $status;
1206                         }
1207
1208                         # Handle the user preference to force summaries here, but not for null edits
1209                         if ( $this->section != 'new' && !$this->allowBlankSummary
1210                                 && 0 != strcmp( $this->mArticle->getContent(), $text )
1211                                 && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
1212                         {
1213                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1214                                         $this->missingSummary = true;
1215                                         $status->fatal( 'missingsummary' );
1216                                         $status->value = self::AS_SUMMARY_NEEDED;
1217                                         wfProfileOut( __METHOD__ );
1218                                         return $status;
1219                                 }
1220                         }
1221
1222                         # And a similar thing for new sections
1223                         if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1224                                 if ( trim( $this->summary ) == '' ) {
1225                                         $this->missingSummary = true;
1226                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1227                                         $status->value = self::AS_SUMMARY_NEEDED;
1228                                         wfProfileOut( __METHOD__ );
1229                                         return $status;
1230                                 }
1231                         }
1232
1233                         # All's well
1234                         wfProfileIn( __METHOD__ . '-sectionanchor' );
1235                         $sectionanchor = '';
1236                         if ( $this->section == 'new' ) {
1237                                 if ( $this->textbox1 == '' ) {
1238                                         $this->missingComment = true;
1239                                         $status->fatal( 'missingcommenttext' );
1240                                         $status->value = self::AS_TEXTBOX_EMPTY;
1241                                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1242                                         wfProfileOut( __METHOD__ );
1243                                         return $status;
1244                                 }
1245                                 if ( $this->summary != '' ) {
1246                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1247                                         # This is a new section, so create a link to the new section
1248                                         # in the revision summary.
1249                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1250                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1251                                 }
1252                         } elseif ( $this->section != '' ) {
1253                                 # Try to get a section anchor from the section source, redirect to edited section if header found
1254                                 # XXX: might be better to integrate this into Article::replaceSection
1255                                 # for duplicate heading checking and maybe parsing
1256                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1257                                 # we can't deal with anchors, includes, html etc in the header for now,
1258                                 # headline would need to be parsed to improve this
1259                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1260                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1261                                 }
1262                         }
1263                         $result['sectionanchor'] = $sectionanchor;
1264                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1265
1266                         // Save errors may fall down to the edit form, but we've now
1267                         // merged the section into full text. Clear the section field
1268                         // so that later submission of conflict forms won't try to
1269                         // replace that into a duplicated mess.
1270                         $this->textbox1 = $text;
1271                         $this->section = '';
1272
1273                         $status->value = self::AS_SUCCESS_UPDATE;
1274                 }
1275
1276                 // Check for length errors again now that the section is merged in
1277                 $this->kblength = (int)( strlen( $text ) / 1024 );
1278                 if ( $this->kblength > $wgMaxArticleSize ) {
1279                         $this->tooBig = true;
1280                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1281                         wfProfileOut( __METHOD__ );
1282                         return $status;
1283                 }
1284
1285                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1286                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1287                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1288                         ( $bot ? EDIT_FORCE_BOT : 0 );
1289
1290                 $doEditStatus = $this->mArticle->doEdit( $text, $this->summary, $flags );
1291
1292                 if ( $doEditStatus->isOK() ) {
1293                         $result['redirect'] = Title::newFromRedirect( $text ) !== null;
1294                         $this->commitWatch();
1295                         wfProfileOut( __METHOD__ );
1296                         return $status;
1297                 } else {
1298                         $this->isConflict = true;
1299                         $doEditStatus->value = self::AS_END; // Destroys data doEdit() put in $status->value but who cares
1300                         wfProfileOut( __METHOD__ );
1301                         return $doEditStatus;
1302                 }
1303         }
1304
1305         /**
1306          * Commit the change of watch status
1307          */
1308         protected function commitWatch() {
1309                 global $wgUser;
1310                 if ( $this->watchthis xor $this->mTitle->userIsWatching() ) {
1311                         $dbw = wfGetDB( DB_MASTER );
1312                         $dbw->begin();
1313                         if ( $this->watchthis ) {
1314                                 WatchAction::doWatch( $this->mTitle, $wgUser );
1315                         } else {
1316                                 WatchAction::doUnwatch( $this->mTitle, $wgUser );
1317                         }
1318                         $dbw->commit();
1319                 }
1320         }
1321
1322         /**
1323          * Check if no edits were made by other users since
1324          * the time a user started editing the page. Limit to
1325          * 50 revisions for the sake of performance.
1326          *
1327          * @param $id int
1328          * @param $edittime string
1329          *
1330          * @return bool
1331          */
1332         protected function userWasLastToEdit( $id, $edittime ) {
1333                 if( !$id ) return false;
1334                 $dbw = wfGetDB( DB_MASTER );
1335                 $res = $dbw->select( 'revision',
1336                         'rev_user',
1337                         array(
1338                                 'rev_page' => $this->mArticle->getId(),
1339                                 'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
1340                         ),
1341                         __METHOD__,
1342                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1343                 foreach ( $res as $row ) {
1344                         if( $row->rev_user != $id ) {
1345                                 return false;
1346                         }
1347                 }
1348                 return true;
1349         }
1350
1351         /**
1352          * @private
1353          * @todo document
1354          *
1355          * @parma $editText string
1356          *
1357          * @return bool
1358          */
1359         function mergeChangesInto( &$editText ){
1360                 wfProfileIn( __METHOD__ );
1361
1362                 $db = wfGetDB( DB_MASTER );
1363
1364                 // This is the revision the editor started from
1365                 $baseRevision = $this->getBaseRevision();
1366                 if ( is_null( $baseRevision ) ) {
1367                         wfProfileOut( __METHOD__ );
1368                         return false;
1369                 }
1370                 $baseText = $baseRevision->getText();
1371
1372                 // The current state, we want to merge updates into it
1373                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1374                 if ( is_null( $currentRevision ) ) {
1375                         wfProfileOut( __METHOD__ );
1376                         return false;
1377                 }
1378                 $currentText = $currentRevision->getText();
1379
1380                 $result = '';
1381                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
1382                         $editText = $result;
1383                         wfProfileOut( __METHOD__ );
1384                         return true;
1385                 } else {
1386                         wfProfileOut( __METHOD__ );
1387                         return false;
1388                 }
1389         }
1390
1391         /**
1392          * @return Revision
1393          */
1394         function getBaseRevision() {
1395                 if ( !$this->mBaseRevision ) {
1396                         $db = wfGetDB( DB_MASTER );
1397                         $baseRevision = Revision::loadFromTimestamp(
1398                                 $db, $this->mTitle, $this->edittime );
1399                         return $this->mBaseRevision = $baseRevision;
1400                 } else {
1401                         return $this->mBaseRevision;
1402                 }
1403         }
1404
1405         /**
1406          * Check given input text against $wgSpamRegex, and return the text of the first match.
1407          *
1408          * @param $text string
1409          *
1410          * @return string|false matching string or false
1411          */
1412         public static function matchSpamRegex( $text ) {
1413                 global $wgSpamRegex;
1414                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1415                 $regexes = (array)$wgSpamRegex;
1416                 return self::matchSpamRegexInternal( $text, $regexes );
1417         }
1418
1419         /**
1420          * Check given input text against $wgSpamRegex, and return the text of the first match.
1421          *
1422          * @parma $text string
1423          *
1424          * @return string|false  matching string or false
1425          */
1426         public static function matchSummarySpamRegex( $text ) {
1427                 global $wgSummarySpamRegex;
1428                 $regexes = (array)$wgSummarySpamRegex;
1429                 return self::matchSpamRegexInternal( $text, $regexes );
1430         }
1431
1432         /**
1433          * @param $text string
1434          * @param $regexes array
1435          * @return bool|string
1436          */
1437         protected static function matchSpamRegexInternal( $text, $regexes ) {
1438                 foreach( $regexes as $regex ) {
1439                         $matches = array();
1440                         if( preg_match( $regex, $text, $matches ) ) {
1441                                 return $matches[0];
1442                         }
1443                 }
1444                 return false;
1445         }
1446
1447         function setHeaders() {
1448                 global $wgOut;
1449                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1450                 if ( $this->isConflict ) {
1451                         $wgOut->setPageTitle( wfMessage( 'editconflict', $this->getContextTitle()->getPrefixedText() ) );
1452                 } elseif ( $this->section != '' ) {
1453                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1454                         $wgOut->setPageTitle( wfMessage( $msg, $this->getContextTitle()->getPrefixedText() ) );
1455                 } else {
1456                         # Use the title defined by DISPLAYTITLE magic word when present
1457                         if ( isset( $this->mParserOutput )
1458                          && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
1459                                 $title = $dt;
1460                         } else {
1461                                 $title = $this->getContextTitle()->getPrefixedText();
1462                         }
1463                         $wgOut->setPageTitle( wfMessage( 'editing', $title ) );
1464                 }
1465         }
1466
1467         /**
1468          * Show all applicable editing introductions
1469          */
1470         protected function showIntro() {
1471                 global $wgOut, $wgUser;
1472                 if ( $this->suppressIntro ) {
1473                         return;
1474                 }
1475
1476                 $namespace = $this->mTitle->getNamespace();
1477
1478                 if ( $namespace == NS_MEDIAWIKI ) {
1479                         # Show a warning if editing an interface message
1480                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
1481                 }
1482
1483                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
1484                 # Show log extract when the user is currently blocked
1485                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
1486                         $parts = explode( '/', $this->mTitle->getText(), 2 );
1487                         $username = $parts[0];
1488                         $user = User::newFromName( $username, false /* allow IP users*/ );
1489                         $ip = User::isIP( $username );
1490                         if ( !($user && $user->isLoggedIn()) && !$ip ) { # User does not exist
1491                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
1492                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
1493                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1494                                 LogEventsList::showLogExtract(
1495                                         $wgOut,
1496                                         'block',
1497                                         $user->getUserPage(),
1498                                         '',
1499                                         array(
1500                                                 'lim' => 1,
1501                                                 'showIfEmpty' => false,
1502                                                 'msgKey' => array(
1503                                                         'blocked-notice-logextract',
1504                                                         $user->getName() # Support GENDER in notice
1505                                                 )
1506                                         )
1507                                 );
1508                         }
1509                 }
1510                 # Try to add a custom edit intro, or use the standard one if this is not possible.
1511                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
1512                         if ( $wgUser->isLoggedIn() ) {
1513                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
1514                         } else {
1515                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
1516                         }
1517                 }
1518                 # Give a notice if the user is editing a deleted/moved page...
1519                 if ( !$this->mTitle->exists() ) {
1520                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle,
1521                                 '', array( 'lim' => 10,
1522                                            'conds' => array( "log_action != 'revision'" ),
1523                                            'showIfEmpty' => false,
1524                                            'msgKey' => array( 'recreate-moveddeleted-warn') )
1525                         );
1526                 }
1527         }
1528
1529         /**
1530          * Attempt to show a custom editing introduction, if supplied
1531          *
1532          * @return bool
1533          */
1534         protected function showCustomIntro() {
1535                 if ( $this->editintro ) {
1536                         $title = Title::newFromText( $this->editintro );
1537                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
1538                                 global $wgOut;
1539                                 // Added using template syntax, to take <noinclude>'s into account.
1540                                 $wgOut->addWikiTextTitleTidy( '{{:' . $title->getFullText() . '}}', $this->mTitle );
1541                                 return true;
1542                         } else {
1543                                 return false;
1544                         }
1545                 } else {
1546                         return false;
1547                 }
1548         }
1549
1550         /**
1551          * Send the edit form and related headers to $wgOut
1552          * @param $formCallback Callback that takes an OutputPage parameter; will be called
1553          *     during form output near the top, for captchas and the like.
1554          */
1555         function showEditForm( $formCallback = null ) {
1556                 global $wgOut, $wgUser;
1557
1558                 wfProfileIn( __METHOD__ );
1559
1560                 #need to parse the preview early so that we know which templates are used,
1561                 #otherwise users with "show preview after edit box" will get a blank list
1562                 #we parse this near the beginning so that setHeaders can do the title
1563                 #setting work instead of leaving it in getPreviewText
1564                 $previewOutput = '';
1565                 if ( $this->formtype == 'preview' ) {
1566                         $previewOutput = $this->getPreviewText();
1567                 }
1568
1569                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) );
1570
1571                 $this->setHeaders();
1572
1573                 # Enabled article-related sidebar, toplinks, etc.
1574                 $wgOut->setArticleRelated( true );
1575
1576                 if ( $this->showHeader() === false ) {
1577                         wfProfileOut( __METHOD__ );
1578                         return;
1579                 }
1580
1581                 $action = htmlspecialchars( $this->getActionURL( $this->getContextTitle() ) );
1582
1583                 if ( $wgUser->getOption( 'showtoolbar' ) and !$this->isCssJsSubpage ) {
1584                         # prepare toolbar for edit buttons
1585                         $toolbar = EditPage::getEditToolbar();
1586                 } else {
1587                         $toolbar = '';
1588                 }
1589
1590
1591                 $wgOut->addHTML( $this->editFormPageTop );
1592
1593                 if ( $wgUser->getOption( 'previewontop' ) ) {
1594                         $this->displayPreviewArea( $previewOutput, true );
1595                 }
1596
1597                 $wgOut->addHTML( $this->editFormTextTop );
1598
1599                 $templates = $this->getTemplates();
1600                 $formattedtemplates = Linker::formatTemplates( $templates, $this->preview, $this->section != '');
1601
1602                 $hiddencats = $this->mArticle->getHiddenCategories();
1603                 $formattedhiddencats = Linker::formatHiddenCategories( $hiddencats );
1604
1605                 if ( $this->wasDeletedSinceLastEdit() && 'save' != $this->formtype ) {
1606                         $wgOut->wrapWikiMsg(
1607                                 "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
1608                                 'deletedwhileediting' );
1609                 } elseif ( $this->wasDeletedSinceLastEdit() ) {
1610                         // Hide the toolbar and edit area, user can click preview to get it back
1611                         // Add an confirmation checkbox and explanation.
1612                         $toolbar = '';
1613                         // @todo move this to a cleaner conditional instead of blanking a variable
1614                 }
1615                 $wgOut->addHTML( <<<HTML
1616 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1617 HTML
1618 );
1619
1620                 if ( is_callable( $formCallback ) ) {
1621                         call_user_func_array( $formCallback, array( &$wgOut ) );
1622                 }
1623
1624                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1625
1626                 // Put these up at the top to ensure they aren't lost on early form submission
1627                 $this->showFormBeforeText();
1628
1629                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
1630                         $username = $this->lastDelete->user_name;
1631                         $comment = $this->lastDelete->log_comment;
1632
1633                         // It is better to not parse the comment at all than to have templates expanded in the middle
1634                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
1635                         $key = $comment === ''
1636                                 ? 'confirmrecreate-noreason'
1637                                 : 'confirmrecreate';
1638                         $wgOut->addHTML(
1639                                 '<div class="mw-confirm-recreate">' .
1640                                 wfMsgExt( $key, 'parseinline', $username, "<nowiki>$comment</nowiki>" ) .
1641                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1642                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1643                                 ) .
1644                                 '</div>'
1645                         );
1646                 }
1647
1648                 # If a blank edit summary was previously provided, and the appropriate
1649                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1650                 # user being bounced back more than once in the event that a summary
1651                 # is not required.
1652                 #####
1653                 # For a bit more sophisticated detection of blank summaries, hash the
1654                 # automatic one and pass that in the hidden field wpAutoSummary.
1655                 if ( $this->missingSummary ||
1656                         ( $this->section == 'new' && $this->nosummary ) )
1657                                 $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
1658                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1659                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
1660
1661                 $wgOut->addHTML( Html::hidden( 'oldid', $this->mArticle->getOldID() ) );
1662
1663                 if ( $this->section == 'new' ) {
1664                         $this->showSummaryInput( true, $this->summary );
1665                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
1666                 }
1667
1668                 $wgOut->addHTML( $this->editFormTextBeforeContent );
1669
1670                 $wgOut->addHTML( $toolbar );
1671
1672                 if ( $this->isConflict ) {
1673                         // In an edit conflict bypass the overrideable content form method
1674                         // and fallback to the raw wpTextbox1 since editconflicts can't be
1675                         // resolved between page source edits and custom ui edits using the
1676                         // custom edit ui.
1677                         $this->showTextbox1( null, $this->getContent() );
1678                 } else {
1679                         $this->showContentForm();
1680                 }
1681
1682                 $wgOut->addHTML( $this->editFormTextAfterContent );
1683
1684                 $wgOut->addWikiText( $this->getCopywarn() );
1685                 if ( isset($this->editFormTextAfterWarn) && $this->editFormTextAfterWarn !== '' )
1686                         $wgOut->addHTML( $this->editFormTextAfterWarn );
1687
1688                 $this->showStandardInputs();
1689
1690                 $this->showFormAfterText();
1691
1692                 $this->showTosSummary();
1693                 $this->showEditTools();
1694
1695                 $wgOut->addHTML( <<<HTML
1696 {$this->editFormTextAfterTools}
1697 <div class='templatesUsed'>
1698 {$formattedtemplates}
1699 </div>
1700 <div class='hiddencats'>
1701 {$formattedhiddencats}
1702 </div>
1703 HTML
1704 );
1705
1706                 if ( $this->isConflict )
1707                         $this->showConflict();
1708
1709                 $wgOut->addHTML( $this->editFormTextBottom );
1710                 $wgOut->addHTML( "</form>\n" );
1711                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1712                         $this->displayPreviewArea( $previewOutput, false );
1713                 }
1714
1715                 wfProfileOut( __METHOD__ );
1716         }
1717
1718         /**
1719          * Extract the section title from current section text, if any.
1720          *
1721          * @param string $text
1722          * @return Mixed|string or false
1723          */
1724         public static function extractSectionTitle( $text ) {
1725                 preg_match( "/^(=+)(.+)\\1(\n|$)/i", $text, $matches );
1726                 if ( !empty( $matches[2] ) ) {
1727                         global $wgParser;
1728                         return $wgParser->stripSectionName(trim($matches[2]));
1729                 } else {
1730                         return false;
1731                 }
1732         }
1733
1734         protected function showHeader() {
1735                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
1736                 if ( $this->isConflict ) {
1737                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
1738                         $this->edittime = $this->mArticle->getTimestamp();
1739                 } else {
1740                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
1741                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
1742                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
1743                                 // Someone is welcome to try refactoring though
1744                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
1745                                 return false;
1746                         }
1747
1748                         if ( $this->section != '' && $this->section != 'new' ) {
1749                                 $matches = array();
1750                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1751                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 );
1752                                         if ( $sectionTitle !== false ) {
1753                                                 $this->summary = "/* $sectionTitle */ ";
1754                                         }
1755                                 }
1756                         }
1757
1758                         if ( $this->missingComment ) {
1759                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
1760                         }
1761
1762                         if ( $this->missingSummary && $this->section != 'new' ) {
1763                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
1764                         }
1765
1766                         if ( $this->missingSummary && $this->section == 'new' ) {
1767                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
1768                         }
1769
1770                         if ( $this->hookError !== '' ) {
1771                                 $wgOut->addWikiText( $this->hookError );
1772                         }
1773
1774                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1775                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1776                         }
1777
1778                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1779                         // Let sysop know that this will make private content public if saved
1780
1781                                 if ( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1782                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
1783                                 } elseif ( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1784                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
1785                                 }
1786
1787                                 if ( !$this->mArticle->mRevision->isCurrent() ) {
1788                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1789                                         $wgOut->addWikiMsg( 'editingold' );
1790                                 }
1791                         }
1792                 }
1793
1794                 if ( wfReadOnly() ) {
1795                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
1796                 } elseif ( $wgUser->isAnon() ) {
1797                         if ( $this->formtype != 'preview' ) {
1798                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
1799                         } else {
1800                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
1801                         }
1802                 } else {
1803                         if ( $this->isCssJsSubpage ) {
1804                                 # Check the skin exists
1805                                 if ( $this->isWrongCaseCssJsPage ) {
1806                                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>", array( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
1807                                 }
1808                                 if ( $this->formtype !== 'preview' ) {
1809                                         if ( $this->isCssSubpage )
1810                                                 $wgOut->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
1811                                         if ( $this->isJsSubpage )
1812                                                 $wgOut->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
1813                                 }
1814                         }
1815                 }
1816
1817                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
1818                         # Is the title semi-protected?
1819                         if ( $this->mTitle->isSemiProtected() ) {
1820                                 $noticeMsg = 'semiprotectedpagewarning';
1821                         } else {
1822                                 # Then it must be protected based on static groups (regular)
1823                                 $noticeMsg = 'protectedpagewarning';
1824                         }
1825                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
1826                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
1827                 }
1828                 if ( $this->mTitle->isCascadeProtected() ) {
1829                         # Is this page under cascading protection from some source pages?
1830                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1831                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
1832                         $cascadeSourcesCount = count( $cascadeSources );
1833                         if ( $cascadeSourcesCount > 0 ) {
1834                                 # Explain, and list the titles responsible
1835                                 foreach( $cascadeSources as $page ) {
1836                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1837                                 }
1838                         }
1839                         $notice .= '</div>';
1840                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
1841                 }
1842                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
1843                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
1844                                 array(  'lim' => 1,
1845                                         'showIfEmpty' => false,
1846                                         'msgKey' => array( 'titleprotectedwarning' ),
1847                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
1848                 }
1849
1850                 if ( $this->kblength === false ) {
1851                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1852                 }
1853
1854                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1855                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
1856                                 array( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) ) );
1857                 } else {
1858                         if( !wfMessage('longpage-hint')->isDisabled() ) {
1859                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
1860                                         array( 'longpage-hint', $wgLang->formatSize( strlen( $this->textbox1 ) ), strlen( $this->textbox1 ) )
1861                                 );
1862                         }
1863                 }
1864         }
1865
1866         /**
1867          * Standard summary input and label (wgSummary), abstracted so EditPage
1868          * subclasses may reorganize the form.
1869          * Note that you do not need to worry about the label's for=, it will be
1870          * inferred by the id given to the input. You can remove them both by
1871          * passing array( 'id' => false ) to $userInputAttrs.
1872          *
1873          * @param $summary string The value of the summary input
1874          * @param $labelText string The html to place inside the label
1875          * @param $inputAttrs array of attrs to use on the input
1876          * @param $spanLabelAttrs array of attrs to use on the span inside the label
1877          *
1878          * @return array An array in the format array( $label, $input )
1879          */
1880         function getSummaryInput($summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null) {
1881                 //Note: the maxlength is overriden in JS to 250 and to make it use UTF-8 bytes, not characters.
1882                 $inputAttrs = ( is_array($inputAttrs) ? $inputAttrs : array() ) + array(
1883                         'id' => 'wpSummary',
1884                         'maxlength' => '200',
1885                         'tabindex' => '1',
1886                         'size' => 60,
1887                         'spellcheck' => 'true',
1888                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
1889
1890                 $spanLabelAttrs = ( is_array($spanLabelAttrs) ? $spanLabelAttrs : array() ) + array(
1891                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
1892                         'id' => "wpSummaryLabel"
1893                 );
1894
1895                 $label = null;
1896                 if ( $labelText ) {
1897                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
1898                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
1899                 }
1900
1901                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
1902
1903                 return array( $label, $input );
1904         }
1905
1906         /**
1907          * @param $isSubjectPreview Boolean: true if this is the section subject/title
1908          *                          up top, or false if this is the comment summary
1909          *                          down below the textarea
1910          * @param $summary String: The text of the summary to display
1911          * @return String
1912          */
1913         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
1914                 global $wgOut, $wgContLang;
1915                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1916                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
1917                 if ( $isSubjectPreview ) {
1918                         if ( $this->nosummary ) {
1919                                 return;
1920                         }
1921                 } else {
1922                         if ( !$this->mShowSummaryField ) {
1923                                 return;
1924                         }
1925                 }
1926                 $summary = $wgContLang->recodeForEdit( $summary );
1927                 $labelText = wfMsgExt( $isSubjectPreview ? 'subject' : 'summary', 'parseinline' );
1928                 list($label, $input) = $this->getSummaryInput($summary, $labelText, array( 'class' => $summaryClass ), array());
1929                 $wgOut->addHTML("{$label} {$input}");
1930         }
1931
1932         /**
1933          * @param $isSubjectPreview Boolean: true if this is the section subject/title
1934          *                          up top, or false if this is the comment summary
1935          *                          down below the textarea
1936          * @param $summary String: the text of the summary to display
1937          * @return String
1938          */
1939         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
1940                 if ( !$summary || ( !$this->preview && !$this->diff ) )
1941                         return "";
1942
1943                 global $wgParser;
1944
1945                 if ( $isSubjectPreview )
1946                         $summary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $summary ) );
1947
1948                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
1949
1950                 $summary = wfMsgExt( $message, 'parseinline' ) . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
1951                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
1952         }
1953
1954         protected function showFormBeforeText() {
1955                 global $wgOut;
1956                 $section = htmlspecialchars( $this->section );
1957                 $wgOut->addHTML( <<<HTML
1958 <input type='hidden' value="{$section}" name="wpSection" />
1959 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
1960 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
1961 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
1962
1963 HTML
1964                 );
1965                 if ( !$this->checkUnicodeCompliantBrowser() )
1966                         $wgOut->addHTML(Html::hidden( 'safemode', '1' ));
1967         }
1968
1969         protected function showFormAfterText() {
1970                 global $wgOut, $wgUser;
1971                 /**
1972                  * To make it harder for someone to slip a user a page
1973                  * which submits an edit form to the wiki without their
1974                  * knowledge, a random token is associated with the login
1975                  * session. If it's not passed back with the submission,
1976                  * we won't save the page, or render user JavaScript and
1977                  * CSS previews.
1978                  *
1979                  * For anon editors, who may not have a session, we just
1980                  * include the constant suffix to prevent editing from
1981                  * broken text-mangling proxies.
1982                  */
1983                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->getEditToken() ) . "\n" );
1984         }
1985
1986         /**
1987          * Subpage overridable method for printing the form for page content editing
1988          * By default this simply outputs wpTextbox1
1989          * Subclasses can override this to provide a custom UI for editing;
1990          * be it a form, or simply wpTextbox1 with a modified content that will be
1991          * reverse modified when extracted from the post data.
1992          * Note that this is basically the inverse for importContentFormData
1993          */
1994         protected function showContentForm() {
1995                 $this->showTextbox1();
1996         }
1997
1998         /**
1999          * Method to output wpTextbox1
2000          * The $textoverride method can be used by subclasses overriding showContentForm
2001          * to pass back to this method.
2002          *
2003          * @param $customAttribs An array of html attributes to use in the textarea
2004          * @param $textoverride String: optional text to override $this->textarea1 with
2005          */
2006         protected function showTextbox1($customAttribs = null, $textoverride = null) {
2007                 $classes = array(); // Textarea CSS
2008                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2009                         # Is the title semi-protected?
2010                         if ( $this->mTitle->isSemiProtected() ) {
2011                                 $classes[] = 'mw-textarea-sprotected';
2012                         } else {
2013                                 # Then it must be protected based on static groups (regular)
2014                                 $classes[] = 'mw-textarea-protected';
2015                         }
2016                         # Is the title cascade-protected?
2017                         if ( $this->mTitle->isCascadeProtected() ) {
2018                                 $classes[] = 'mw-textarea-cprotected';
2019                         }
2020                 }
2021                 $attribs = array( 'tabindex' => 1 );
2022                 if ( is_array($customAttribs) )
2023                         $attribs += $customAttribs;
2024
2025                 if ( $this->wasDeletedSinceLastEdit() )
2026                         $attribs['type'] = 'hidden';
2027                 if ( !empty( $classes ) ) {
2028                         if ( isset($attribs['class']) )
2029                                 $classes[] = $attribs['class'];
2030                         $attribs['class'] = implode( ' ', $classes );
2031                 }
2032
2033                 $this->showTextbox( isset($textoverride) ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
2034         }
2035
2036         protected function showTextbox2() {
2037                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
2038         }
2039
2040         protected function showTextbox( $content, $name, $customAttribs = array() ) {
2041                 global $wgOut, $wgUser;
2042
2043                 $wikitext = $this->safeUnicodeOutput( $content );
2044                 if ( strval($wikitext) !== '' ) {
2045                         // Ensure there's a newline at the end, otherwise adding lines
2046                         // is awkward.
2047                         // But don't add a newline if the ext is empty, or Firefox in XHTML
2048                         // mode will show an extra newline. A bit annoying.
2049                         $wikitext .= "\n";
2050                 }
2051
2052                 $attribs = $customAttribs + array(
2053                         'accesskey' => ',',
2054                         'id'   => $name,
2055                         'cols' => $wgUser->getIntOption( 'cols' ),
2056                         'rows' => $wgUser->getIntOption( 'rows' ),
2057                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
2058                 );
2059
2060                 $pageLang = $this->mTitle->getPageLanguage();
2061                 $attribs['lang'] = $pageLang->getCode();
2062                 $attribs['dir'] = $pageLang->getDir();
2063
2064                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
2065         }
2066
2067         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
2068                 global $wgOut;
2069                 $classes = array();
2070                 if ( $isOnTop )
2071                         $classes[] = 'ontop';
2072
2073                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
2074
2075                 if ( $this->formtype != 'preview' )
2076                         $attribs['style'] = 'display: none;';
2077
2078                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
2079
2080                 if ( $this->formtype == 'preview' ) {
2081                         $this->showPreview( $previewOutput );
2082                 }
2083
2084                 $wgOut->addHTML( '</div>' );
2085
2086                 if ( $this->formtype == 'diff') {
2087                         $this->showDiff();
2088                 }
2089         }
2090
2091         /**
2092          * Append preview output to $wgOut.
2093          * Includes category rendering if this is a category page.
2094          *
2095          * @param $text String: the HTML to be output for the preview.
2096          */
2097         protected function showPreview( $text ) {
2098                 global $wgOut;
2099                 if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
2100                         $this->mArticle->openShowCategory();
2101                 }
2102                 # This hook seems slightly odd here, but makes things more
2103                 # consistent for extensions.
2104                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
2105                 $wgOut->addHTML( $text );
2106                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2107                         $this->mArticle->closeShowCategory();
2108                 }
2109         }
2110
2111         /**
2112          * Get a diff between the current contents of the edit box and the
2113          * version of the page we're editing from.
2114          *
2115          * If this is a section edit, we'll replace the section as for final
2116          * save and then make a comparison.
2117          */
2118         function showDiff() {
2119                 global $wgUser, $wgContLang, $wgParser;
2120
2121                 $oldtext = $this->mArticle->fetchContent();
2122                 $newtext = $this->mArticle->replaceSection(
2123                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2124
2125                 wfRunHooks( 'EditPageGetDiffText', array( $this, &$newtext ) );
2126
2127                 $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
2128                 $newtext = $wgParser->preSaveTransform( $newtext, $this->mTitle, $wgUser, $popts );
2129                 $oldtitle = wfMsgExt( 'currentrev', array( 'parseinline' ) );
2130                 $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2131                 if ( $oldtext !== false  || $newtext != '' ) {
2132                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2133                         $de->setText( $oldtext, $newtext );
2134                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2135                         $de->showDiffStyle();
2136                 } else {
2137                         $difftext = '';
2138                 }
2139
2140                 global $wgOut;
2141                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2142         }
2143
2144         /**
2145          * Give a chance for site and per-namespace customizations of
2146          * terms of service summary link that might exist separately
2147          * from the copyright notice.
2148          *
2149          * This will display between the save button and the edit tools,
2150          * so should remain short!
2151          */
2152         protected function showTosSummary() {
2153                 $msg = 'editpage-tos-summary';
2154                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
2155                 if( !wfMessage( $msg )->isDisabled() ) {
2156                         global $wgOut;
2157                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
2158                         $wgOut->addWikiMsg( $msg );
2159                         $wgOut->addHTML( '</div>' );
2160                 }
2161         }
2162
2163         protected function showEditTools() {
2164                 global $wgOut;
2165                 $wgOut->addHTML( '<div class="mw-editTools">' .
2166                         wfMessage( 'edittools' )->inContentLanguage()->parse() .
2167                         '</div>' );
2168         }
2169
2170         protected function getCopywarn() {
2171                 global $wgRightsText;
2172                 if ( $wgRightsText ) {
2173                         $copywarnMsg = array( 'copyrightwarning',
2174                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
2175                                 $wgRightsText );
2176                 } else {
2177                         $copywarnMsg = array( 'copyrightwarning2',
2178                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
2179                 }
2180                 // Allow for site and per-namespace customization of contribution/copyright notice.
2181                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
2182
2183                 return "<div id=\"editpage-copywarn\">\n" .
2184                         call_user_func_array("wfMsgNoTrans", $copywarnMsg) . "\n</div>";
2185         }
2186
2187         protected function showStandardInputs( &$tabindex = 2 ) {
2188                 global $wgOut;
2189                 $wgOut->addHTML( "<div class='editOptions'>\n" );
2190
2191                 if ( $this->section != 'new' ) {
2192                         $this->showSummaryInput( false, $this->summary );
2193                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
2194                 }
2195
2196                 $checkboxes = $this->getCheckboxes( $tabindex,
2197                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
2198                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
2199                 $wgOut->addHTML( "<div class='editButtons'>\n" );
2200                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
2201
2202                 $cancel = $this->getCancelLink();
2203                 if ( $cancel !== '' ) {
2204                         $cancel .= wfMsgExt( 'pipe-separator' , 'escapenoentities' );
2205                 }
2206                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
2207                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
2208                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
2209                         htmlspecialchars( wfMsg( 'newwindow' ) );
2210                 $wgOut->addHTML( "      <span class='editHelp'>{$cancel}{$edithelp}</span>\n" );
2211                 $wgOut->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
2212         }
2213
2214         /**
2215          * Show an edit conflict. textbox1 is already shown in showEditForm().
2216          * If you want to use another entry point to this function, be careful.
2217          */
2218         protected function showConflict() {
2219                 global $wgOut;
2220                 $this->textbox2 = $this->textbox1;
2221                 $this->textbox1 = $this->getContent();
2222                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
2223                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2224
2225                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2226                         $de->setText( $this->textbox2, $this->textbox1 );
2227                         $de->showDiff( wfMsgExt( 'yourtext', 'parseinline' ), wfMsg( 'storedversion' ) );
2228
2229                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2230                         $this->showTextbox2();
2231                 }
2232         }
2233
2234         /**
2235          * @return string
2236          */
2237         public function getCancelLink() {
2238                 $cancelParams = array();
2239                 if ( !$this->isConflict && $this->mArticle->getOldID() > 0 ) {
2240                         $cancelParams['oldid'] = $this->mArticle->getOldID();
2241                 }
2242
2243                 return Linker::linkKnown(
2244                         $this->getContextTitle(),
2245                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
2246                         array( 'id' => 'mw-editform-cancel' ),
2247                         $cancelParams
2248                 );
2249         }
2250
2251         /**
2252          * Returns the URL to use in the form's action attribute.
2253          * This is used by EditPage subclasses when simply customizing the action
2254          * variable in the constructor is not enough. This can be used when the
2255          * EditPage lives inside of a Special page rather than a custom page action.
2256          *
2257          * @param $title Title object for which is being edited (where we go to for &action= links)
2258          * @return string
2259          */
2260         protected function getActionURL( Title $title ) {
2261                 return $title->getLocalURL( array( 'action' => $this->action ) );
2262         }
2263
2264         /**
2265          * Check if a page was deleted while the user was editing it, before submit.
2266          * Note that we rely on the logging table, which hasn't been always there,
2267          * but that doesn't matter, because this only applies to brand new
2268          * deletes.
2269          */
2270         protected function wasDeletedSinceLastEdit() {
2271                 if ( $this->deletedSinceEdit !== null ) {
2272                         return $this->deletedSinceEdit;
2273                 }
2274
2275                 $this->deletedSinceEdit = false;
2276
2277                 if ( $this->mTitle->isDeletedQuick() ) {
2278                         $this->lastDelete = $this->getLastDelete();
2279                         if ( $this->lastDelete ) {
2280                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
2281                                 if ( $deleteTime > $this->starttime ) {
2282                                         $this->deletedSinceEdit = true;
2283                                 }
2284                         }
2285                 }
2286
2287                 return $this->deletedSinceEdit;
2288         }
2289
2290         protected function getLastDelete() {
2291                 $dbr = wfGetDB( DB_SLAVE );
2292                 $data = $dbr->selectRow(
2293                         array( 'logging', 'user' ),
2294                         array( 'log_type',
2295                                    'log_action',
2296                                    'log_timestamp',
2297                                    'log_user',
2298                                    'log_namespace',
2299                                    'log_title',
2300                                    'log_comment',
2301                                    'log_params',
2302                                    'log_deleted',
2303                                    'user_name' ),
2304                         array( 'log_namespace' => $this->mTitle->getNamespace(),
2305                                    'log_title' => $this->mTitle->getDBkey(),
2306                                    'log_type' => 'delete',
2307                                    'log_action' => 'delete',
2308                                    'user_id=log_user' ),
2309                         __METHOD__,
2310                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
2311                 );
2312                 // Quick paranoid permission checks...
2313                 if( is_object( $data ) ) {
2314                         if( $data->log_deleted & LogPage::DELETED_USER )
2315                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
2316                         if( $data->log_deleted & LogPage::DELETED_COMMENT )
2317                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
2318                 }
2319                 return $data;
2320         }
2321
2322         /**
2323          * Get the rendered text for previewing.
2324          * @return string
2325          */
2326         function getPreviewText() {
2327                 global $wgOut, $wgUser, $wgParser, $wgRawHtml;
2328
2329                 wfProfileIn( __METHOD__ );
2330
2331                 if ( $wgRawHtml && !$this->mTokenOk ) {
2332                         // Could be an offsite preview attempt. This is very unsafe if
2333                         // HTML is enabled, as it could be an attack.
2334                         $parsedNote = '';
2335                         if ( $this->textbox1 !== '' ) {
2336                                 // Do not put big scary notice, if previewing the empty
2337                                 // string, which happens when you initially edit
2338                                 // a category page, due to automatic preview-on-open.
2339                                 $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
2340                                         wfMsg( 'session_fail_preview_html' ) . "</div>", true, /* interface */true );
2341                         }
2342                         wfProfileOut( __METHOD__ );
2343                         return $parsedNote;
2344                 }
2345
2346                 if ( $this->mTriedSave && !$this->mTokenOk ) {
2347                         if ( $this->mTokenOkExceptSuffix ) {
2348                                 $note = wfMsg( 'token_suffix_mismatch' );
2349                         } else {
2350                                 $note = wfMsg( 'session_fail_preview' );
2351                         }
2352                 } elseif ( $this->incompleteForm ) {
2353                         $note = wfMsg( 'edit_form_incomplete' );
2354                 } else {
2355                         $note = wfMsg( 'previewnote' );
2356                 }
2357
2358                 $parserOptions = ParserOptions::newFromUser( $wgUser );
2359                 $parserOptions->setEditSection( false );
2360                 $parserOptions->setTidy( true );
2361                 $parserOptions->setIsPreview( true );
2362                 $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
2363
2364                 # don't parse non-wikitext pages, show message about preview
2365                 # XXX: stupid php bug won't let us use $this->getContextTitle()->isCssJsSubpage() here -- This note has been there since r3530. Sure the bug was fixed time ago?
2366
2367                 if ( $this->isCssJsSubpage || !$this->mTitle->isWikitextPage() ) {
2368                         if( $this->mTitle->isCssJsSubpage() ) {
2369                                 $level = 'user';
2370                         } elseif( $this->mTitle->isCssOrJsPage() ) {
2371                                 $level = 'site';
2372                         } else {
2373                                 $level = false;
2374                         }
2375
2376                         # Used messages to make sure grep find them:
2377                         # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
2378                         if( $level ) {
2379                                 if (preg_match( "/\\.css$/", $this->mTitle->getText() ) ) {
2380                                         $previewtext = "<div id='mw-{$level}csspreview'>\n" . wfMsg( "{$level}csspreview" ) . "\n</div>";
2381                                         $class = "mw-code mw-css";
2382                                 } elseif (preg_match( "/\\.js$/", $this->mTitle->getText() ) ) {
2383                                         $previewtext = "<div id='mw-{$level}jspreview'>\n" . wfMsg( "{$level}jspreview" ) . "\n</div>";
2384                                         $class = "mw-code mw-js";
2385                                 } else {
2386                                         throw new MWException( 'A CSS/JS (sub)page but which is not css nor js!' );
2387                                 }
2388                         }
2389
2390                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
2391                         $previewHTML = $parserOutput->mText;
2392                         $previewHTML .= "<pre class=\"$class\" dir=\"ltr\">\n" . htmlspecialchars( $this->textbox1 ) . "\n</pre>\n";
2393                 } else {
2394                         $rt = Title::newFromRedirectArray( $this->textbox1 );
2395                         if ( $rt ) {
2396                                 $previewHTML = $this->mArticle->viewRedirect( $rt, false );
2397                         } else {
2398                                 $toparse = $this->textbox1;
2399
2400                                 # If we're adding a comment, we need to show the
2401                                 # summary as the headline
2402                                 if ( $this->section == "new" && $this->summary != "" ) {
2403                                         $toparse = "== {$this->summary} ==\n\n" . $toparse;
2404                                 }
2405
2406                                 wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
2407
2408                                 $parserOptions->enableLimitReport();
2409
2410                                 $toparse = $wgParser->preSaveTransform( $toparse, $this->mTitle, $wgUser, $parserOptions );
2411                                 $parserOutput = $wgParser->parse( $toparse, $this->mTitle, $parserOptions );
2412
2413                                 $previewHTML = $parserOutput->getText();
2414                                 $this->mParserOutput = $parserOutput;
2415                                 $wgOut->addParserOutputNoText( $parserOutput );
2416
2417                                 if ( count( $parserOutput->getWarnings() ) ) {
2418                                         $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
2419                                 }
2420                         }
2421                 }
2422
2423                 if( $this->isConflict ) {
2424                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
2425                 } else {
2426                         $conflict = '<hr />';
2427                 }
2428
2429                 $previewhead = "<div class='previewnote'>\n" .
2430                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
2431                         $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
2432
2433                 $pageLang = $this->mTitle->getPageLanguage();
2434                 $attribs = array( 'lang' => $pageLang->getCode(), 'dir' => $pageLang->getDir(),
2435                         'class' => 'mw-content-'.$pageLang->getDir() );
2436                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
2437
2438                 wfProfileOut( __METHOD__ );
2439                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
2440         }
2441
2442         /**
2443          * @return Array
2444          */
2445         function getTemplates() {
2446                 if ( $this->preview || $this->section != '' ) {
2447                         $templates = array();
2448                         if ( !isset( $this->mParserOutput ) ) {
2449                                 return $templates;
2450                         }
2451                         foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
2452                                 foreach( array_keys( $template ) as $dbk ) {
2453                                         $templates[] = Title::makeTitle($ns, $dbk);
2454                                 }
2455                         }
2456                         return $templates;
2457                 } else {
2458                         return $this->mArticle->getUsedTemplates();
2459                 }
2460         }
2461
2462         /**
2463          * Shows a bulletin board style toolbar for common editing functions.
2464          * It can be disabled in the user preferences.
2465          * The necessary JavaScript code can be found in skins/common/edit.js.
2466          *
2467          * @return string
2468          */
2469         static function getEditToolbar() {
2470                 global $wgStylePath, $wgContLang, $wgLang, $wgOut;
2471                 global $wgUseTeX, $wgEnableUploads, $wgForeignFileRepos;
2472
2473                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
2474
2475                 /**
2476                  * $toolarray is an array of arrays each of which includes the
2477                  * filename of the button image (without path), the opening
2478                  * tag, the closing tag, optionally a sample text that is
2479                  * inserted between the two when no selection is highlighted
2480                  * and.  The tip text is shown when the user moves the mouse
2481                  * over the button.
2482                  *
2483                  * Also here: accesskeys (key), which are not used yet until
2484                  * someone can figure out a way to make them work in
2485                  * IE. However, we should make sure these keys are not defined
2486                  * on the edit page.
2487                  */
2488                 $toolarray = array(
2489                         array(
2490                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
2491                                 'id'     => 'mw-editbutton-bold',
2492                                 'open'   => '\'\'\'',
2493                                 'close'  => '\'\'\'',
2494                                 'sample' => wfMsg( 'bold_sample' ),
2495                                 'tip'    => wfMsg( 'bold_tip' ),
2496                                 'key'    => 'B'
2497                         ),
2498                         array(
2499                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
2500                                 'id'     => 'mw-editbutton-italic',
2501                                 'open'   => '\'\'',
2502                                 'close'  => '\'\'',
2503                                 'sample' => wfMsg( 'italic_sample' ),
2504                                 'tip'    => wfMsg( 'italic_tip' ),
2505                                 'key'    => 'I'
2506                         ),
2507                         array(
2508                                 'image'  => $wgLang->getImageFile( 'button-link' ),
2509                                 'id'     => 'mw-editbutton-link',
2510                                 'open'   => '[[',
2511                                 'close'  => ']]',
2512                                 'sample' => wfMsg( 'link_sample' ),
2513                                 'tip'    => wfMsg( 'link_tip' ),
2514                                 'key'    => 'L'
2515                         ),
2516                         array(
2517                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
2518                                 'id'     => 'mw-editbutton-extlink',
2519                                 'open'   => '[',
2520                                 'close'  => ']',
2521                                 'sample' => wfMsg( 'extlink_sample' ),
2522                                 'tip'    => wfMsg( 'extlink_tip' ),
2523                                 'key'    => 'X'
2524                         ),
2525                         array(
2526                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
2527                                 'id'     => 'mw-editbutton-headline',
2528                                 'open'   => "\n== ",
2529                                 'close'  => " ==\n",
2530                                 'sample' => wfMsg( 'headline_sample' ),
2531                                 'tip'    => wfMsg( 'headline_tip' ),
2532                                 'key'    => 'H'
2533                         ),
2534                         $imagesAvailable ? array(
2535                                 'image'  => $wgLang->getImageFile( 'button-image' ),
2536                                 'id'     => 'mw-editbutton-image',
2537                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
2538                                 'close'  => ']]',
2539                                 'sample' => wfMsg( 'image_sample' ),
2540                                 'tip'    => wfMsg( 'image_tip' ),
2541                                 'key'    => 'D',
2542                         ) : false,
2543                         $imagesAvailable ? array(
2544                                 'image'  => $wgLang->getImageFile( 'button-media' ),
2545                                 'id'     => 'mw-editbutton-media',
2546                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
2547                                 'close'  => ']]',
2548                                 'sample' => wfMsg( 'media_sample' ),
2549                                 'tip'    => wfMsg( 'media_tip' ),
2550                                 'key'    => 'M'
2551                         ) : false,
2552                         $wgUseTeX ?     array(
2553                                 'image'  => $wgLang->getImageFile( 'button-math' ),
2554                                 'id'     => 'mw-editbutton-math',
2555                                 'open'   => "<math>",
2556                                 'close'  => "</math>",
2557                                 'sample' => wfMsg( 'math_sample' ),
2558                                 'tip'    => wfMsg( 'math_tip' ),
2559                                 'key'    => 'C'
2560                         ) : false,
2561                         array(
2562                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
2563                                 'id'     => 'mw-editbutton-nowiki',
2564                                 'open'   => "<nowiki>",
2565                                 'close'  => "</nowiki>",
2566                                 'sample' => wfMsg( 'nowiki_sample' ),
2567                                 'tip'    => wfMsg( 'nowiki_tip' ),
2568                                 'key'    => 'N'
2569                         ),
2570                         array(
2571                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
2572                                 'id'     => 'mw-editbutton-signature',
2573                                 'open'   => '--~~~~',
2574                                 'close'  => '',
2575                                 'sample' => '',
2576                                 'tip'    => wfMsg( 'sig_tip' ),
2577                                 'key'    => 'Y'
2578                         ),
2579                         array(
2580                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
2581                                 'id'     => 'mw-editbutton-hr',
2582                                 'open'   => "\n----\n",
2583                                 'close'  => '',
2584                                 'sample' => '',
2585                                 'tip'    => wfMsg( 'hr_tip' ),
2586                                 'key'    => 'R'
2587                         )
2588                 );
2589
2590                 $script = '';
2591                 foreach ( $toolarray as $tool ) {
2592                         if ( !$tool ) {
2593                                 continue;
2594                         }
2595
2596                         $params = array(
2597                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
2598                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2599                                 // Older browsers show a "speedtip" type message only for ALT.
2600                                 // Ideally these should be different, realistically they
2601                                 // probably don't need to be.
2602                                 $tip = $tool['tip'],
2603                                 $open = $tool['open'],
2604                                 $close = $tool['close'],
2605                                 $sample = $tool['sample'],
2606                                 $cssId = $tool['id'],
2607                         );
2608
2609                         $script .= Xml::encodeJsCall( 'mw.toolbar.addButton', $params );
2610                 }
2611                 $wgOut->addScript( Html::inlineScript( ResourceLoader::makeLoaderConditionalScript( $script ) ) );
2612
2613                 $toolbar = '<div id="toolbar"></div>';
2614
2615                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2616
2617                 return $toolbar;
2618         }
2619
2620         /**
2621          * Returns an array of html code of the following checkboxes:
2622          * minor and watch
2623          *
2624          * @param $tabindex Current tabindex
2625          * @param $checked Array of checkbox => bool, where bool indicates the checked
2626          *                 status of the checkbox
2627          *
2628          * @return array
2629          */
2630         public function getCheckboxes( &$tabindex, $checked ) {
2631                 global $wgUser;
2632
2633                 $checkboxes = array();
2634
2635                 // don't show the minor edit checkbox if it's a new page or section
2636                 if ( !$this->isNew ) {
2637                         $checkboxes['minor'] = '';
2638                         $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
2639                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
2640                                 $attribs = array(
2641                                         'tabindex'  => ++$tabindex,
2642                                         'accesskey' => wfMsg( 'accesskey-minoredit' ),
2643                                         'id'        => 'wpMinoredit',
2644                                 );
2645                                 $checkboxes['minor'] =
2646                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2647                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
2648                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
2649                                         ">{$minorLabel}</label>";
2650                         }
2651                 }
2652
2653                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
2654                 $checkboxes['watch'] = '';
2655                 if ( $wgUser->isLoggedIn() ) {
2656                         $attribs = array(
2657                                 'tabindex'  => ++$tabindex,
2658                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2659                                 'id'        => 'wpWatchthis',
2660                         );
2661                         $checkboxes['watch'] =
2662                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2663                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
2664                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
2665                                 ">{$watchLabel}</label>";
2666                 }
2667                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2668                 return $checkboxes;
2669         }
2670
2671         /**
2672          * Returns an array of html code of the following buttons:
2673          * save, diff, preview and live
2674          *
2675          * @param $tabindex Current tabindex
2676          *
2677          * @return array
2678          */
2679         public function getEditButtons( &$tabindex ) {
2680                 $buttons = array();
2681
2682                 $temp = array(
2683                         'id'        => 'wpSave',
2684                         'name'      => 'wpSave',
2685                         'type'      => 'submit',
2686                         'tabindex'  => ++$tabindex,
2687                         'value'     => wfMsg( 'savearticle' ),
2688                         'accesskey' => wfMsg( 'accesskey-save' ),
2689                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2690                 );
2691                 $buttons['save'] = Xml::element('input', $temp, '');
2692
2693                 ++$tabindex; // use the same for preview and live preview
2694                 $temp = array(
2695                         'id'        => 'wpPreview',
2696                         'name'      => 'wpPreview',
2697                         'type'      => 'submit',
2698                         'tabindex'  => $tabindex,
2699                         'value'     => wfMsg( 'showpreview' ),
2700                         'accesskey' => wfMsg( 'accesskey-preview' ),
2701                         'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
2702                 );
2703                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
2704                 $buttons['live'] = '';
2705
2706                 $temp = array(
2707                         'id'        => 'wpDiff',
2708                         'name'      => 'wpDiff',
2709                         'type'      => 'submit',
2710                         'tabindex'  => ++$tabindex,
2711                         'value'     => wfMsg( 'showdiff' ),
2712                         'accesskey' => wfMsg( 'accesskey-diff' ),
2713                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
2714                 );
2715                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
2716
2717                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2718                 return $buttons;
2719         }
2720
2721         /**
2722          * Output preview text only. This can be sucked into the edit page
2723          * via JavaScript, and saves the server time rendering the skin as
2724          * well as theoretically being more robust on the client (doesn't
2725          * disturb the edit box's undo history, won't eat your text on
2726          * failure, etc).
2727          *
2728          * @todo This doesn't include category or interlanguage links.
2729          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2730          *       or something...</s> that might also require more skin
2731          *       initialization, so check whether that's a problem.
2732          */
2733         function livePreview() {
2734                 global $wgOut;
2735                 $wgOut->disable();
2736                 header( 'Content-type: text/xml; charset=utf-8' );
2737                 header( 'Cache-control: no-cache' );
2738
2739                 $previewText = $this->getPreviewText();
2740                 #$categories = $skin->getCategoryLinks();
2741
2742                 $s =
2743                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2744                 Xml::tags( 'livepreview', null,
2745                         Xml::element( 'preview', null, $previewText )
2746                         #.      Xml::element( 'category', null, $categories )
2747                 );
2748                 echo $s;
2749         }
2750
2751         /**
2752          * Call the stock "user is blocked" page
2753          *
2754          * @deprecated in 1.19; throw an exception directly instead
2755          */
2756         function blockedPage() {
2757                 wfDeprecated( __METHOD__, '1.19' );
2758                 global $wgUser;
2759
2760                 throw new UserBlockedError( $wgUser->mBlock );
2761         }
2762
2763         /**
2764          * Produce the stock "please login to edit pages" page
2765          *
2766          * @deprecated in 1.19; throw an exception directly instead
2767          */
2768         function userNotLoggedInPage() {
2769                 wfDeprecated( __METHOD__, '1.19' );
2770                 throw new PermissionsError( 'edit' );
2771         }
2772
2773         /**
2774          * Show an error page saying to the user that he has insufficient permissions
2775          * to create a new page
2776          *
2777          * @deprecated in 1.19; throw an exception directly instead
2778          */
2779         function noCreatePermission() {
2780                 wfDeprecated( __METHOD__, '1.19' );
2781                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
2782                 throw new PermissionsError( $permission );
2783         }
2784
2785         /**
2786          * Creates a basic error page which informs the user that
2787          * they have attempted to edit a nonexistent section.
2788          */
2789         function noSuchSectionPage() {
2790                 global $wgOut;
2791
2792                 $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
2793
2794                 $res = wfMsgExt( 'nosuchsectiontext', 'parse', $this->section );
2795                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
2796                 $wgOut->addHTML( $res );
2797
2798                 $wgOut->returnToMain( false, $this->mTitle );
2799         }
2800
2801         /**
2802          * Produce the stock "your edit contains spam" page
2803          *
2804          * @param $match Text which triggered one or more filters
2805          * @deprecated since 1.17 Use method spamPageWithContent() instead
2806          */
2807         static function spamPage( $match = false ) {
2808                 wfDeprecated( __METHOD__, '1.17' );
2809
2810                 global $wgOut, $wgTitle;
2811
2812                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
2813
2814                 $wgOut->addHTML( '<div id="spamprotected">' );
2815                 $wgOut->addWikiMsg( 'spamprotectiontext' );
2816                 if ( $match ) {
2817                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
2818                 }
2819                 $wgOut->addHTML( '</div>' );
2820
2821                 $wgOut->returnToMain( false, $wgTitle );
2822         }
2823
2824         /**
2825          * Show "your edit contains spam" page with your diff and text
2826          *
2827          * @param $match Text which triggered one or more filters
2828          */
2829         public function spamPageWithContent( $match = false ) {
2830                 global $wgOut;
2831                 $this->textbox2 = $this->textbox1;
2832
2833                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
2834
2835                 $wgOut->addHTML( '<div id="spamprotected">' );
2836                 $wgOut->addWikiMsg( 'spamprotectiontext' );
2837                 if ( $match ) {
2838                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
2839                 }
2840                 $wgOut->addHTML( '</div>' );
2841
2842                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2843                 $de = new DifferenceEngine( $this->mArticle->getContext() );
2844                 $de->setText( $this->getContent(), $this->textbox2 );
2845                 $de->showDiff( wfMsg( "storedversion" ), wfMsgExt( 'yourtext', 'parseinline' ) );
2846
2847                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2848                 $this->showTextbox2();
2849
2850                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
2851         }
2852
2853         /**
2854          * Format an anchor fragment as it would appear for a given section name
2855          * @param $text String
2856          * @return String
2857          * @private
2858          */
2859         function sectionAnchor( $text ) {
2860                 global $wgParser;
2861                 return $wgParser->guessSectionNameFromWikiText( $text );
2862         }
2863
2864         /**
2865          * Check if the browser is on a blacklist of user-agents known to
2866          * mangle UTF-8 data on form submission. Returns true if Unicode
2867          * should make it through, false if it's known to be a problem.
2868          * @return bool
2869          * @private
2870          */
2871         function checkUnicodeCompliantBrowser() {
2872                 global $wgBrowserBlackList;
2873                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
2874                         // No User-Agent header sent? Trust it by default...
2875                         return true;
2876                 }
2877                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
2878                 foreach ( $wgBrowserBlackList as $browser ) {
2879                         if ( preg_match($browser, $currentbrowser) ) {
2880                                 return false;
2881                         }
2882                 }
2883                 return true;
2884         }
2885
2886         /**
2887          * Filter an input field through a Unicode de-armoring process if it
2888          * came from an old browser with known broken Unicode editing issues.
2889          *
2890          * @param $request WebRequest
2891          * @param $field String
2892          * @return String
2893          * @private
2894          */
2895         function safeUnicodeInput( $request, $field ) {
2896                 $text = rtrim( $request->getText( $field ) );
2897                 return $request->getBool( 'safemode' )
2898                         ? $this->unmakesafe( $text )
2899                         : $text;
2900         }
2901
2902         /**
2903          * @param $request WebRequest
2904          * @param $text string
2905          * @return string
2906          */
2907         function safeUnicodeText( $request, $text ) {
2908                 $text = rtrim( $text );
2909                 return $request->getBool( 'safemode' )
2910                         ? $this->unmakesafe( $text )
2911                         : $text;
2912         }
2913
2914         /**
2915          * Filter an output field through a Unicode armoring process if it is
2916          * going to an old browser with known broken Unicode editing issues.
2917          *
2918          * @param $text String
2919          * @return String
2920          * @private
2921          */
2922         function safeUnicodeOutput( $text ) {
2923                 global $wgContLang;
2924                 $codedText = $wgContLang->recodeForEdit( $text );
2925                 return $this->checkUnicodeCompliantBrowser()
2926                         ? $codedText
2927                         : $this->makesafe( $codedText );
2928         }
2929
2930         /**
2931          * A number of web browsers are known to corrupt non-ASCII characters
2932          * in a UTF-8 text editing environment. To protect against this,
2933          * detected browsers will be served an armored version of the text,
2934          * with non-ASCII chars converted to numeric HTML character references.
2935          *
2936          * Preexisting such character references will have a 0 added to them
2937          * to ensure that round-trips do not alter the original data.
2938          *
2939          * @param $invalue String
2940          * @return String
2941          * @private
2942          */
2943         function makesafe( $invalue ) {
2944                 // Armor existing references for reversability.
2945                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2946
2947                 $bytesleft = 0;
2948                 $result = "";
2949                 $working = 0;
2950                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2951                         $bytevalue = ord( $invalue[$i] );
2952                         if ( $bytevalue <= 0x7F ) { //0xxx xxxx
2953                                 $result .= chr( $bytevalue );
2954                                 $bytesleft = 0;
2955                         } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
2956                                 $working = $working << 6;
2957                                 $working += ($bytevalue & 0x3F);
2958                                 $bytesleft--;
2959                                 if ( $bytesleft <= 0 ) {
2960                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2961                                 }
2962                         } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
2963                                 $working = $bytevalue & 0x1F;
2964                                 $bytesleft = 1;
2965                         } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
2966                                 $working = $bytevalue & 0x0F;
2967                                 $bytesleft = 2;
2968                         } else { //1111 0xxx
2969                                 $working = $bytevalue & 0x07;
2970                                 $bytesleft = 3;
2971                         }
2972                 }
2973                 return $result;
2974         }
2975
2976         /**
2977          * Reverse the previously applied transliteration of non-ASCII characters
2978          * back to UTF-8. Used to protect data from corruption by broken web browsers
2979          * as listed in $wgBrowserBlackList.
2980          *
2981          * @param $invalue String
2982          * @return String
2983          * @private
2984          */
2985         function unmakesafe( $invalue ) {
2986                 $result = "";
2987                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2988                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i+3] != '0' ) ) {
2989                                 $i += 3;
2990                                 $hexstring = "";
2991                                 do {
2992                                         $hexstring .= $invalue[$i];
2993                                         $i++;
2994                                 } while( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
2995
2996                                 // Do some sanity checks. These aren't needed for reversability,
2997                                 // but should help keep the breakage down if the editor
2998                                 // breaks one of the entities whilst editing.
2999                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
3000                                         $codepoint = hexdec($hexstring);
3001                                         $result .= codepointToUtf8( $codepoint );
3002                                 } else {
3003                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
3004                                 }
3005                         } else {
3006                                 $result .= substr( $invalue, $i, 1 );
3007                         }
3008                 }
3009                 // reverse the transform that we made for reversability reasons.
3010                 return strtr( $result, array( "&#x0" => "&#x" ) );
3011         }
3012 }