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  * $wgTitle 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 class EditPage {
  20         const AS_SUCCESS_UPDATE                 = 200;
  21         const AS_SUCCESS_NEW_ARTICLE            = 201;
  22         const AS_HOOK_ERROR                     = 210;
  23         const AS_FILTERING                      = 211;
  24         const AS_HOOK_ERROR_EXPECTED            = 212;
  25         const AS_BLOCKED_PAGE_FOR_USER          = 215;
  26         const AS_CONTENT_TOO_BIG                = 216;
  27         const AS_USER_CANNOT_EDIT               = 217;
  28         const AS_READ_ONLY_PAGE_ANON            = 218;
  29         const AS_READ_ONLY_PAGE_LOGGED          = 219;
  30         const AS_READ_ONLY_PAGE                 = 220;
  31         const AS_RATE_LIMITED                   = 221;
  32         const AS_ARTICLE_WAS_DELETED            = 222;
  33         const AS_NO_CREATE_PERMISSION           = 223;
  34         const AS_BLANK_ARTICLE                  = 224;
  35         const AS_CONFLICT_DETECTED              = 225;
  36         const AS_SUMMARY_NEEDED                 = 226;
  37         const AS_TEXTBOX_EMPTY                  = 228;
  38         const AS_MAX_ARTICLE_SIZE_EXCEEDED      = 229;
  39         const AS_OK                             = 230;
  40         const AS_END                            = 231;
  41         const AS_SPAM_ERROR                     = 232;
  42         const AS_IMAGE_REDIRECT_ANON            = 233;
  43         const AS_IMAGE_REDIRECT_LOGGED          = 234;
  44
  45         var $mArticle;
  46         var $mTitle;
  47         var $mMetaData = '';
  48         var $isConflict = false;
  49         var $isCssJsSubpage = false;
  50         var $deletedSinceEdit = false;
  51         var $formtype;
  52         var $firsttime;
  53         var $lastDelete;
  54         var $mTokenOk = false;
  55         var $mTokenOkExceptSuffix = false;
  56         var $mTriedSave = false;
  57         var $tooBig = false;
  58         var $kblength = false;
  59         var $missingComment = false;
  60         var $missingSummary = false;
  61         var $allowBlankSummary = false;
  62         var $autoSumm = '';
  63         var $hookError = '';
  64         var $mPreviewTemplates;
  65
  66         # Form values
  67         var $save = false, $preview = false, $diff = false;
  68         var $minoredit = false, $watchthis = false, $recreate = false;
  69         var $textbox1 = '', $textbox2 = '', $summary = '';
  70         var $edittime = '', $section = '', $starttime = '';
  71         var $oldid = 0, $editintro = '', $scrolltop = null;
  72
  73         # Placeholders for text injection by hooks (must be HTML)
  74         # extensions should take care to _append_ to the present value
  75         public $editFormPageTop; // Before even the preview
  76         public $editFormTextTop;
  77         public $editFormTextBeforeContent;
  78         public $editFormTextAfterWarn;
  79         public $editFormTextAfterTools;
  80         public $editFormTextBottom;
  81
  82         /* $didSave should be set to true whenever an article was succesfully altered. */
  83         public $didSave = false;
  84
  85         public $suppressIntro = false;
  86
  87         /**
  88          * @todo document
  89          * @param $article
  90          */
  91         function EditPage( $article ) {
  92                 $this->mArticle =& $article;
  93                 $this->mTitle = $article->getTitle();
  94
  95                 # Placeholders for text injection by hooks (empty per default)
  96                 $this->editFormPageTop =
  97                 $this->editFormTextTop =
  98                 $this->editFormTextBeforeContent =
  99                 $this->editFormTextAfterWarn =
 100                 $this->editFormTextAfterTools =
 101                 $this->editFormTextBottom = "";
 102         }
 103
 104         /**
 105          * Fetch initial editing page content.
 106          * @private
 107          */
 108         function getContent( $def_text = '' ) {
 109                 global $wgOut, $wgRequest, $wgParser, $wgMessageCache;
 110
 111                 # Get variables from query string :P
 112                 $section = $wgRequest->getVal( 'section' );
 113                 $preload = $wgRequest->getVal( 'preload' );
 114                 $undoafter = $wgRequest->getVal( 'undoafter' );
 115                 $undo = $wgRequest->getVal( 'undo' );
 116
 117                 wfProfileIn( __METHOD__ );
 118
 119                 $text = '';
 120                 if( !$this->mTitle->exists() ) {
 121                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 122                                 $wgMessageCache->loadAllMessages();
 123                                 # If this is a system message, get the default text.
 124                                 $text = wfMsgWeirdKey ( $this->mTitle->getText() ) ;
 125                         } else {
 126                                 # If requested, preload some text.
 127                                 $text = $this->getPreloadedText( $preload );
 128                         }
 129                         # We used to put MediaWiki:Newarticletext here if
 130                         # $text was empty at this point.
 131                         # This is now shown above the edit box instead.
 132                 } else {
 133                         // FIXME: may be better to use Revision class directly
 134                         // But don't mess with it just yet. Article knows how to
 135                         // fetch the page record from the high-priority server,
 136                         // which is needed to guarantee we don't pick up lagged
 137                         // information.
 138
 139                         $text = $this->mArticle->getContent();
 140
 141                         if ($undo > 0 && $undoafter > 0 && $undo < $undoafter) {
 142                                 # If they got undoafter and undo round the wrong way, switch them
 143                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 144                         }
 145
 146                         if ( $undo > 0 && $undo > $undoafter ) {
 147                                 # Undoing a specific edit overrides section editing; section-editing
 148                                 # doesn't work with undoing.
 149                                 if ( $undoafter ) {
 150                                         $undorev = Revision::newFromId($undo);
 151                                         $oldrev = Revision::newFromId($undoafter);
 152                                 } else {
 153                                         $undorev = Revision::newFromId($undo);
 154                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 155                                 }
 156
 157                                 # Sanity check, make sure it's the right page,
 158                                 # the revisions exist and they were not deleted.
 159                                 # Otherwise, $text will be left as-is.
 160                                 if( !is_null( $undorev ) && !is_null( $oldrev ) &&
 161                                         $undorev->getPage() == $oldrev->getPage() &&
 162                                         $undorev->getPage() == $this->mArticle->getID() &&
 163                                         !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 164                                         !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 165                                         $undorev_text = $undorev->getText();
 166                                         $oldrev_text = $oldrev->getText();
 167                                         $currev_text = $text;
 168
 169                                         if ( $currev_text != $undorev_text ) {
 170                                                 $result = wfMerge( $undorev_text, $oldrev_text, $currev_text, $text );
 171                                         } else {
 172                                                 # No use doing a merge if it's just a straight revert.
 173                                                 $text = $oldrev_text;
 174                                                 $result = true;
 175                                         }
 176                                         if( $result ) {
 177                                                 # Inform the user of our success and set an automatic edit summary
 178                                                 $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
 179                                                 $firstrev = $oldrev->getNext();
 180                                                 # If we just undid one rev, use an autosummary
 181                                                 if( $firstrev->mId == $undo ) {
 182                                                         $this->summary = wfMsgForContent('undo-summary', $undo, $undorev->getUserText());
 183                                                 }
 184                                                 $this->formtype = 'diff';
 185                                         } else {
 186                                                 # Warn the user that something went wrong
 187                                                 $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-failure' ) );
 188                                         }
 189                                 } else {
 190                                         // Failed basic sanity checks.
 191                                         // Older revisions may have been removed since the link
 192                                         // was created, or we may simply have got bogus input.
 193                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-norev' ) );
 194                                 }
 195                         } else if( $section != '' ) {
 196                                 if( $section == 'new' ) {
 197                                         $text = $this->getPreloadedText( $preload );
 198                                 } else {
 199                                         $text = $wgParser->getSection( $text, $section, $def_text );
 200                                 }
 201                         }
 202                 }
 203
 204                 wfProfileOut( __METHOD__ );
 205                 return $text;
 206         }
 207
 208         /**
 209          * Get the contents of a page from its title and remove includeonly tags
 210          *
 211          * @param $preload String: the title of the page.
 212          * @return string The contents of the page.
 213          */
 214         private function getPreloadedText($preload) {
 215                 if ( $preload === '' )
 216                         return '';
 217                 else {
 218                         $preloadTitle = Title::newFromText( $preload );
 219                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 220                                 $rev=Revision::newFromTitle($preloadTitle);
 221                                 if ( is_object( $rev ) ) {
 222                                         $text = $rev->getText();
 223                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 224                                         // its own mini-parser! -ævar
 225                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 226                                         return $text;
 227                                 } else
 228                                         return '';
 229                         }
 230                 }
 231         }
 232
 233         /**
 234          * This is the function that extracts metadata from the article body on the first view.
 235          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 236          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 237          */
 238         function extractMetaDataFromArticle () {
 239                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
 240                 $this->mMetaData = '' ;
 241                 if ( !$wgUseMetadataEdit ) return ;
 242                 if ( $wgMetadataWhitelist == '' ) return ;
 243                 $s = '' ;
 244                 $t = $this->getContent();
 245
 246                 # MISSING : <nowiki> filtering
 247
 248                 # Categories and language links
 249                 $t = explode ( "\n" , $t ) ;
 250                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
 251                 $cat = $ll = array() ;
 252                 foreach ( $t AS $key => $x )
 253                 {
 254                         $y = trim ( strtolower ( $x ) ) ;
 255                         while ( substr ( $y , 0 , 2 ) == '[[' )
 256                         {
 257                                 $y = explode ( ']]' , trim ( $x ) ) ;
 258                                 $first = array_shift ( $y ) ;
 259                                 $first = explode ( ':' , $first ) ;
 260                                 $ns = array_shift ( $first ) ;
 261                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
 262                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
 263                                 {
 264                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
 265                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
 266                                         else $ll[] = $add ;
 267                                         $x = implode ( ']]' , $y ) ;
 268                                         $t[$key] = $x ;
 269                                         $y = trim ( strtolower ( $x ) ) ;
 270                                 }
 271                         }
 272                 }
 273                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
 274                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
 275                 $t = implode ( "\n" , $t ) ;
 276
 277                 # Load whitelist
 278                 $sat = array () ; # stand-alone-templates; must be lowercase
 279                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
 280                 $wl_article = new Article ( $wl_title ) ;
 281                 $wl = explode ( "\n" , $wl_article->getContent() ) ;
 282                 foreach ( $wl AS $x )
 283                 {
 284                         $isentry = false ;
 285                         $x = trim ( $x ) ;
 286                         while ( substr ( $x , 0 , 1 ) == '*' )
 287                         {
 288                                 $isentry = true ;
 289                                 $x = trim ( substr ( $x , 1 ) ) ;
 290                         }
 291                         if ( $isentry )
 292                         {
 293                                 $sat[] = strtolower ( $x ) ;
 294                         }
 295
 296                 }
 297
 298                 # Templates, but only some
 299                 $t = explode ( '{{' , $t ) ;
 300                 $tl = array () ;
 301                 foreach ( $t AS $key => $x )
 302                 {
 303                         $y = explode ( '}}' , $x , 2 ) ;
 304                         if ( count ( $y ) == 2 )
 305                         {
 306                                 $z = $y[0] ;
 307                                 $z = explode ( '|' , $z ) ;
 308                                 $tn = array_shift ( $z ) ;
 309                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 310                                 {
 311                                         $tl[] = '{{' . $y[0] . '}}' ;
 312                                         $t[$key] = $y[1] ;
 313                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 314                                 }
 315                                 else $t[$key] = '{{' . $x ;
 316                         }
 317                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 318                         else $t[$key] = $x ;
 319                 }
 320                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 321                 $t = implode ( '' , $t ) ;
 322
 323                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 324                 $this->mArticle->mContent = $t ;
 325                 $this->mMetaData = $s ;
 326         }
 327
 328         protected function wasDeletedSinceLastEdit() {
 329                 /* Note that we rely on the logging table, which hasn't been always there,
 330                  * but that doesn't matter, because this only applies to brand new
 331                  * deletes.
 332                  */
 333                 if ( $this->deletedSinceEdit )
 334                         return true;
 335                 if ( $this->mTitle->isDeleted() ) {
 336                         $this->lastDelete = $this->getLastDelete();
 337                         if ( !is_null($this->lastDelete) ) {
 338                                 $deletetime = $this->lastDelete->log_timestamp;
 339                                 if ( ($deletetime - $this->starttime) > 0 ) {
 340                                         $this->deletedSinceEdit = true;
 341                                 }
 342                         }
 343                 }
 344                 return $this->deletedSinceEdit;
 345         }
 346
 347         function submit() {
 348                 $this->edit();
 349         }
 350
 351         /**
 352          * This is the function that gets called for "action=edit". It
 353          * sets up various member variables, then passes execution to
 354          * another function, usually showEditForm()
 355          *
 356          * The edit form is self-submitting, so that when things like
 357          * preview and edit conflicts occur, we get the same form back
 358          * with the extra stuff added.  Only when the final submission
 359          * is made and all is well do we actually save and redirect to
 360          * the newly-edited page.
 361          */
 362         function edit() {
 363                 global $wgOut, $wgUser, $wgRequest;
 364
 365                 if ( !wfRunHooks( 'AlternateEdit', array( &$this ) ) )
 366                         return;
 367
 368                 wfProfileIn( __METHOD__ );
 369                 wfDebug( __METHOD__.": enter\n" );
 370
 371                 // this is not an article
 372                 $wgOut->setArticleFlag(false);
 373
 374                 $this->importFormData( $wgRequest );
 375                 $this->firsttime = false;
 376
 377                 if( $this->live ) {
 378                         $this->livePreview();
 379                         wfProfileOut( __METHOD__ );
 380                         return;
 381                 }
 382
 383                 $wgOut->addScriptFile( 'edit.js' );
 384
 385                 if( wfReadOnly() ) {
 386                         $this->readOnlyPage( $this->getContent() );
 387                         wfProfileOut( __METHOD__ );
 388                         return;
 389                 }
 390
 391                 $permErrors = $this->mTitle->getUserPermissionsErrors('edit', $wgUser);
 392
 393                 if( !$this->mTitle->exists() ) {
 394                         $permErrors = array_merge( $permErrors,
 395                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors('create', $wgUser), $permErrors ) );
 396                 }
 397
 398                 # Ignore some permissions errors.
 399                 $remove = array();
 400                 foreach( $permErrors as $error ) {
 401                         if ( ( $this->preview || $this->diff ) &&
 402                                 ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext'))
 403                         {
 404                                 // Don't worry about blocks when previewing/diffing
 405                                 $remove[] = $error;
 406                         }
 407
 408                         if ($error[0] == 'readonlytext')
 409                         {
 410                                 if ($this->edit) {
 411                                         $this->formtype = 'preview';
 412                                 } elseif ($this->save || $this->preview || $this->diff) {
 413                                         $remove[] = $error;
 414                                 }
 415                         }
 416                 }
 417                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 418
 419                 if ( $permErrors ) {
 420                         wfDebug( __METHOD__.": User can't edit\n" );
 421                         $this->readOnlyPage( $this->getContent(), true, $permErrors, 'edit' );
 422                         wfProfileOut( __METHOD__ );
 423                         return;
 424                 } else {
 425                         if ( $this->save ) {
 426                                 $this->formtype = 'save';
 427                         } else if ( $this->preview ) {
 428                                 $this->formtype = 'preview';
 429                         } else if ( $this->diff ) {
 430                                 $this->formtype = 'diff';
 431                         } else { # First time through
 432                                 $this->firsttime = true;
 433                                 if( $this->previewOnOpen() ) {
 434                                         $this->formtype = 'preview';
 435                                 } else {
 436                                         $this->extractMetaDataFromArticle () ;
 437                                         $this->formtype = 'initial';
 438                                 }
 439                         }
 440                 }
 441
 442                 wfProfileIn( __METHOD__."-business-end" );
 443
 444                 $this->isConflict = false;
 445                 // css / js subpages of user pages get a special treatment
 446                 $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
 447                 $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 448
 449                 # Show applicable editing introductions
 450                 if( $this->formtype == 'initial' || $this->firsttime )
 451                         $this->showIntro();
 452
 453                 if( $this->mTitle->isTalkPage() ) {
 454                         $wgOut->addWikiMsg( 'talkpagetext' );
 455                 }
 456
 457                 # Attempt submission here.  This will check for edit conflicts,
 458                 # and redundantly check for locked database, blocked IPs, etc.
 459                 # that edit() already checked just in case someone tries to sneak
 460                 # in the back door with a hand-edited submission URL.
 461
 462                 if ( 'save' == $this->formtype ) {
 463                         if ( !$this->attemptSave() ) {
 464                                 wfProfileOut( __METHOD__."-business-end" );
 465                                 wfProfileOut( __METHOD__ );
 466                                 return;
 467                         }
 468                 }
 469
 470                 # First time through: get contents, set time for conflict
 471                 # checking, etc.
 472                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 473                         if ($this->initialiseForm() === false) {
 474                                 $this->noSuchSectionPage();
 475                                 wfProfileOut( __METHOD__."-business-end" );
 476                                 wfProfileOut( __METHOD__ );
 477                                 return;
 478                         }
 479                         if( !$this->mTitle->getArticleId() )
 480                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 481                 }
 482
 483                 $this->showEditForm();
 484                 wfProfileOut( __METHOD__."-business-end" );
 485                 wfProfileOut( __METHOD__ );
 486         }
 487
 488         /**
 489          * Show a read-only error
 490          * Parameters are the same as OutputPage:readOnlyPage()
 491          * Redirect to the article page if redlink=1
 492          */
 493         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 494                 global $wgRequest, $wgOut;
 495                 if ( $wgRequest->getBool( 'redlink' ) ) {
 496                         // The edit page was reached via a red link.
 497                         // Redirect to the article page and let them click the edit tab if
 498                         // they really want a permission error.
 499                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 500                 } else {
 501                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 502                 }
 503         }
 504
 505         /**
 506          * Should we show a preview when the edit form is first shown?
 507          *
 508          * @return bool
 509          */
 510         private function previewOnOpen() {
 511                 global $wgRequest, $wgUser;
 512                 if( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 513                         // Explicit override from request
 514                         return true;
 515                 } elseif( $wgRequest->getVal( 'preview' ) == 'no' ) {
 516                         // Explicit override from request
 517                         return false;
 518                 } elseif( $this->section == 'new' ) {
 519                         // Nothing *to* preview for new sections
 520                         return false;
 521                 } elseif( ( $wgRequest->getVal( 'preload' ) !== '' || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 522                         // Standard preference behaviour
 523                         return true;
 524                 } elseif( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
 525                         // Categories are special
 526                         return true;
 527                 } else {
 528                         return false;
 529                 }
 530         }
 531
 532         /**
 533          * @todo document
 534          * @param $request
 535          */
 536         function importFormData( &$request ) {
 537                 global $wgLang, $wgUser;
 538                 $fname = 'EditPage::importFormData';
 539                 wfProfileIn( $fname );
 540
 541                 # Section edit can come from either the form or a link
 542                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 543
 544                 if( $request->wasPosted() ) {
 545                         # These fields need to be checked for encoding.
 546                         # Also remove trailing whitespace, but don't remove _initial_
 547                         # whitespace from the text boxes. This may be significant formatting.
 548                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 549                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 550                         $this->mMetaData = rtrim( $request->getText( 'metadata' ) );
 551                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 552                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
 553
 554                         # Remove extra headings from summaries and new sections.
 555                         $this->summary = preg_replace('/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary);
 556
 557                         $this->edittime = $request->getVal( 'wpEdittime' );
 558                         $this->starttime = $request->getVal( 'wpStarttime' );
 559
 560                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 561
 562                         if( is_null( $this->edittime ) ) {
 563                                 # If the form is incomplete, force to preview.
 564                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 565                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 566                                 $this->preview  = true;
 567                         } else {
 568                                 /* Fallback for live preview */
 569                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 570                                 $this->diff = $request->getCheck( 'wpDiff' );
 571
 572                                 // Remember whether a save was requested, so we can indicate
 573                                 // if we forced preview due to session failure.
 574                                 $this->mTriedSave = !$this->preview;
 575
 576                                 if ( $this->tokenOk( $request ) ) {
 577                                         # Some browsers will not report any submit button
 578                                         # if the user hits enter in the comment box.
 579                                         # The unmarked state will be assumed to be a save,
 580                                         # if the form seems otherwise complete.
 581                                         wfDebug( "$fname: Passed token check.\n" );
 582                                 } else if ( $this->diff ) {
 583                                         # Failed token check, but only requested "Show Changes".
 584                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 585                                 } else {
 586                                         # Page might be a hack attempt posted from
 587                                         # an external site. Preview instead of saving.
 588                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 589                                         $this->preview = true;
 590                                 }
 591                         }
 592                         $this->save = !$this->preview && !$this->diff;
 593                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 594                                 $this->edittime = null;
 595                         }
 596
 597                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 598                                 $this->starttime = null;
 599                         }
 600
 601                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 602
 603                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 604                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 605
 606                         # Don't force edit summaries when a user is editing their own user or talk page
 607                         if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
 608                                 $this->allowBlankSummary = true;
 609                         } else {
 610                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
 611                         }
 612
 613                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 614                 } else {
 615                         # Not a posted form? Start with nothing.
 616                         wfDebug( "$fname: Not a posted form.\n" );
 617                         $this->textbox1  = '';
 618                         $this->textbox2  = '';
 619                         $this->mMetaData = '';
 620                         $this->summary   = '';
 621                         $this->edittime  = '';
 622                         $this->starttime = wfTimestampNow();
 623                         $this->edit      = false;
 624                         $this->preview   = false;
 625                         $this->save      = false;
 626                         $this->diff      = false;
 627                         $this->minoredit = false;
 628                         $this->watchthis = false;
 629                         $this->recreate  = false;
 630
 631                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 632                                 $this->summary = $request->getVal( 'preloadtitle' );
 633                         }
 634                 }
 635
 636                 $this->oldid = $request->getInt( 'oldid' );
 637
 638                 $this->live = $request->getCheck( 'live' );
 639                 $this->editintro = $request->getText( 'editintro' );
 640
 641                 wfProfileOut( $fname );
 642         }
 643
 644         /**
 645          * Make sure the form isn't faking a user's credentials.
 646          *
 647          * @param $request WebRequest
 648          * @return bool
 649          * @private
 650          */
 651         function tokenOk( &$request ) {
 652                 global $wgUser;
 653                 $token = $request->getVal( 'wpEditToken' );
 654                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 655                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 656                 return $this->mTokenOk;
 657         }
 658
 659         /**
 660          * Show all applicable editing introductions
 661          */
 662         private function showIntro() {
 663                 global $wgOut, $wgUser;
 664                 if( $this->suppressIntro )
 665                         return;
 666
 667                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exists
 668                 if( $this->mTitle->getNamespace() == NS_USER || $this->mTitle->getNamespace() == NS_USER_TALK ) {
 669                         $parts = explode( '/', $this->mTitle->getText(), 2 );
 670                         $username = $parts[0];
 671                         $id = User::idFromName( $username );
 672                         $ip = User::isIP( $username );
 673
 674                         if ( $id == 0 && !$ip ) {
 675                                 $wgOut->wrapWikiMsg( '<div class="mw-userpage-userdoesnotexist error">$1</div>',
 676                                         array( 'userpage-userdoesnotexist', $username ) );
 677                         }
 678                 }
 679
 680                 if( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 681                         if( $wgUser->isLoggedIn() ) {
 682                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletext">$1</div>', 'newarticletext' );
 683                         } else {
 684                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletextanon">$1</div>', 'newarticletextanon' );
 685                         }
 686                         $this->showDeletionLog( $wgOut );
 687                 }
 688         }
 689
 690         /**
 691          * Attempt to show a custom editing introduction, if supplied
 692          *
 693          * @return bool
 694          */
 695         private function showCustomIntro() {
 696                 if( $this->editintro ) {
 697                         $title = Title::newFromText( $this->editintro );
 698                         if( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 699                                 global $wgOut;
 700                                 $revision = Revision::newFromTitle( $title );
 701                                 $wgOut->addWikiTextTitleTidy( $revision->getText(), $this->mTitle );
 702                                 return true;
 703                         } else {
 704                                 return false;
 705                         }
 706                 } else {
 707                         return false;
 708                 }
 709         }
 710
 711         /**
 712          * Attempt submission (no UI)
 713          * @return one of the constants describing the result
 714          */
 715         function internalAttemptSave( &$result, $bot = false ) {
 716                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut, $wgParser;
 717                 global $wgMaxArticleSize;
 718
 719                 $fname = 'EditPage::attemptSave';
 720                 wfProfileIn( $fname );
 721                 wfProfileIn( "$fname-checks" );
 722
 723                 if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 724                 {
 725                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
 726                         return self::AS_HOOK_ERROR;
 727                 }
 728
 729                 # Check image redirect
 730                 if ( $this->mTitle->getNamespace() == NS_IMAGE &&
 731                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 732                         !$wgUser->isAllowed( 'upload' ) ) {
 733                                 if( $wgUser->isAnon() ) {
 734                                         return self::AS_IMAGE_REDIRECT_ANON;
 735                                 } else {
 736                                         return self::AS_IMAGE_REDIRECT_LOGGED;
 737                                 }
 738                 }
 739
 740                 # Reintegrate metadata
 741                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 742                 $this->mMetaData = '' ;
 743
 744                 # Check for spam
 745                 $matches = array();
 746                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 747                         $result['spam'] = $matches[0];
 748                         $ip = wfGetIP();
 749                         $pdbk = $this->mTitle->getPrefixedDBkey();
 750                         $match = str_replace( "\n", '', $matches[0] );
 751                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
 752                         wfProfileOut( "$fname-checks" );
 753                         wfProfileOut( $fname );
 754                         return self::AS_SPAM_ERROR;
 755                 }
 756                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
 757                         # Error messages or other handling should be performed by the filter function
 758                         wfProfileOut( "$fname-checks" );
 759                         wfProfileOut( $fname );
 760                         return self::AS_FILTERING;
 761                 }
 762                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
 763                         # Error messages etc. could be handled within the hook...
 764                         wfProfileOut( "$fname-checks" );
 765                         wfProfileOut( $fname );
 766                         return self::AS_HOOK_ERROR;
 767                 } elseif( $this->hookError != '' ) {
 768                         # ...or the hook could be expecting us to produce an error
 769                         wfProfileOut( "$fname-checks" );
 770                         wfProfileOut( $fname );
 771                         return self::AS_HOOK_ERROR_EXPECTED;
 772                 }
 773                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 774                         # Check block state against master, thus 'false'.
 775                         wfProfileOut( "$fname-checks" );
 776                         wfProfileOut( $fname );
 777                         return self::AS_BLOCKED_PAGE_FOR_USER;
 778                 }
 779                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 780                 if ( $this->kblength > $wgMaxArticleSize ) {
 781                         // Error will be displayed by showEditForm()
 782                         $this->tooBig = true;
 783                         wfProfileOut( "$fname-checks" );
 784                         wfProfileOut( $fname );
 785                         return self::AS_CONTENT_TOO_BIG;
 786                 }
 787
 788                 if ( !$wgUser->isAllowed('edit') ) {
 789                         if ( $wgUser->isAnon() ) {
 790                                 wfProfileOut( "$fname-checks" );
 791                                 wfProfileOut( $fname );
 792                                 return self::AS_READ_ONLY_PAGE_ANON;
 793                         }
 794                         else {
 795                                 wfProfileOut( "$fname-checks" );
 796                                 wfProfileOut( $fname );
 797                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 798                         }
 799                 }
 800
 801                 if ( wfReadOnly() ) {
 802                         wfProfileOut( "$fname-checks" );
 803                         wfProfileOut( $fname );
 804                         return self::AS_READ_ONLY_PAGE;
 805                 }
 806                 if ( $wgUser->pingLimiter() ) {
 807                         wfProfileOut( "$fname-checks" );
 808                         wfProfileOut( $fname );
 809                         return self::AS_RATE_LIMITED;
 810                 }
 811
 812                 # If the article has been deleted while editing, don't save it without
 813                 # confirmation
 814                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
 815                         wfProfileOut( "$fname-checks" );
 816                         wfProfileOut( $fname );
 817                         return self::AS_ARTICLE_WAS_DELETED;
 818                 }
 819
 820                 wfProfileOut( "$fname-checks" );
 821
 822                 # If article is new, insert it.
 823                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 824                 if ( 0 == $aid ) {
 825
 826                         // Late check for create permission, just in case *PARANOIA*
 827                         if ( !$this->mTitle->userCan( 'create' ) ) {
 828                                 wfDebug( "$fname: no create permission\n" );
 829                                 wfProfileOut( $fname );
 830                                 return self::AS_NO_CREATE_PERMISSION;
 831                         }
 832
 833                         # Don't save a new article if it's blank.
 834                         if ( '' == $this->textbox1 ) {
 835                                         wfProfileOut( $fname );
 836                                         return self::AS_BLANK_ARTICLE;
 837                         }
 838
 839                         // Run post-section-merge edit filter
 840                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
 841                                 # Error messages etc. could be handled within the hook...
 842                                 wfProfileOut( $fname );
 843                                 return self::AS_HOOK_ERROR;
 844                         }
 845
 846                         $isComment = ( $this->section == 'new' );
 847
 848                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 849                                 $this->minoredit, $this->watchthis, false, $isComment, $bot);
 850
 851                         wfProfileOut( $fname );
 852                         return self::AS_SUCCESS_NEW_ARTICLE;
 853                 }
 854
 855                 # Article exists. Check for edit conflict.
 856
 857                 $this->mArticle->clear(); # Force reload of dates, etc.
 858                 $this->mArticle->forUpdate( true ); # Lock the article
 859
 860                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 861
 862                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 863                         $this->isConflict = true;
 864                         if( $this->section == 'new' ) {
 865                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 866                                         $this->mArticle->getComment() == $this->summary ) {
 867                                         // Probably a duplicate submission of a new comment.
 868                                         // This can happen when squid resends a request after
 869                                         // a timeout but the first one actually went through.
 870                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 871                                 } else {
 872                                         // New comment; suppress conflict.
 873                                         $this->isConflict = false;
 874                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 875                                 }
 876                         }
 877                 }
 878                 $userid = $wgUser->getId();
 879
 880                 if ( $this->isConflict) {
 881                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 882                                 $this->mArticle->getTimestamp() . "')\n" );
 883                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 884                 }
 885                 else {
 886                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 887                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 888                 }
 889                 if( is_null( $text ) ) {
 890                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 891                         $this->isConflict = true;
 892                         $text = $this->textbox1;
 893                 }
 894
 895                 # Suppress edit conflict with self, except for section edits where merging is required.
 896                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 897                         wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
 898                         $this->isConflict = false;
 899                 } else {
 900                         # switch from section editing to normal editing in edit conflict
 901                         if($this->isConflict) {
 902                                 # Attempt merge
 903                                 if( $this->mergeChangesInto( $text ) ){
 904                                         // Successful merge! Maybe we should tell the user the good news?
 905                                         $this->isConflict = false;
 906                                         wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
 907                                 } else {
 908                                         $this->section = '';
 909                                         $this->textbox1 = $text;
 910                                         wfDebug( "EditPage::editForm Keeping edit conflict, failed merge.\n" );
 911                                 }
 912                         }
 913                 }
 914
 915                 if ( $this->isConflict ) {
 916                         wfProfileOut( $fname );
 917                         return self::AS_CONFLICT_DETECTED;
 918                 }
 919
 920                 $oldtext = $this->mArticle->getContent();
 921
 922                 // Run post-section-merge edit filter
 923                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
 924                         # Error messages etc. could be handled within the hook...
 925                         wfProfileOut( $fname );
 926                         return self::AS_HOOK_ERROR;
 927                 }
 928
 929                 # Handle the user preference to force summaries here, but not for null edits
 930                 if( $this->section != 'new' && !$this->allowBlankSummary &&  $wgUser->getOption( 'forceeditsummary') &&
 931                         0 != strcmp($oldtext, $text) &&
 932                         !is_object( Title::newFromRedirect( $text ) ) # check if it's not a redirect
 933                 ) {
 934
 935                         if( md5( $this->summary ) == $this->autoSumm ) {
 936                                 $this->missingSummary = true;
 937                                 wfProfileOut( $fname );
 938                                 return self::AS_SUMMARY_NEEDED;
 939                         }
 940                 }
 941
 942                 # And a similar thing for new sections
 943                 if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 944                         if (trim($this->summary) == '') {
 945                                 $this->missingSummary = true;
 946                                 wfProfileOut( $fname );
 947                                 return self::AS_SUMMARY_NEEDED;
 948                         }
 949                 }
 950
 951                 # All's well
 952                 wfProfileIn( "$fname-sectionanchor" );
 953                 $sectionanchor = '';
 954                 if( $this->section == 'new' ) {
 955                         if ( $this->textbox1 == '' ) {
 956                                 $this->missingComment = true;
 957                                 return self::AS_TEXTBOX_EMPTY;
 958                         }
 959                         if( $this->summary != '' ) {
 960                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
 961                                 # This is a new section, so create a link to the new section
 962                                 # in the revision summary.
 963                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
 964                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
 965                         }
 966                 } elseif( $this->section != '' ) {
 967                         # Try to get a section anchor from the section source, redirect to edited section if header found
 968                         # XXX: might be better to integrate this into Article::replaceSection
 969                         # for duplicate heading checking and maybe parsing
 970                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 971                         # we can't deal with anchors, includes, html etc in the header for now,
 972                         # headline would need to be parsed to improve this
 973                         if($hasmatch and strlen($matches[2]) > 0) {
 974                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
 975                         }
 976                 }
 977                 wfProfileOut( "$fname-sectionanchor" );
 978
 979                 // Save errors may fall down to the edit form, but we've now
 980                 // merged the section into full text. Clear the section field
 981                 // so that later submission of conflict forms won't try to
 982                 // replace that into a duplicated mess.
 983                 $this->textbox1 = $text;
 984                 $this->section = '';
 985
 986                 // Check for length errors again now that the section is merged in
 987                 $this->kblength = (int)(strlen( $text ) / 1024);
 988                 if ( $this->kblength > $wgMaxArticleSize ) {
 989                         $this->tooBig = true;
 990                         wfProfileOut( $fname );
 991                         return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
 992                 }
 993
 994                 # update the article here
 995                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 996                         $this->watchthis, $bot, $sectionanchor ) ) {
 997                         wfProfileOut( $fname );
 998                         return self::AS_SUCCESS_UPDATE;
 999                 } else {
1000                         $this->isConflict = true;
1001                 }
1002                 wfProfileOut( $fname );
1003                 return self::AS_END;
1004         }
1005
1006         /**
1007          * Initialise form fields in the object
1008          * Called on the first invocation, e.g. when a user clicks an edit link
1009          */
1010         function initialiseForm() {
1011                 $this->edittime = $this->mArticle->getTimestamp();
1012                 $this->textbox1 = $this->getContent(false);
1013                 if ($this->textbox1 === false) return false;
1014
1015                 if ( !$this->mArticle->exists() && $this->mTitle->getNamespace() == NS_MEDIAWIKI )
1016                         $this->textbox1 = wfMsgWeirdKey( $this->mTitle->getText() );
1017                 wfProxyCheck();
1018                 return true;
1019         }
1020
1021         /**
1022          * Send the edit form and related headers to $wgOut
1023          * @param $formCallback Optional callable that takes an OutputPage
1024          *                      parameter; will be called during form output
1025          *                      near the top, for captchas and the like.
1026          */
1027         function showEditForm( $formCallback=null ) {
1028                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle;
1029
1030                 # If $wgTitle is null, that means we're in API mode.
1031                 # Some hook probably called this function  without checking
1032                 # for is_null($wgTitle) first. Bail out right here so we don't
1033                 # do lots of work just to discard it right after.
1034                 if(is_null($wgTitle))
1035                         return;
1036
1037                 $fname = 'EditPage::showEditForm';
1038                 wfProfileIn( $fname );
1039
1040                 $sk = $wgUser->getSkin();
1041
1042                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
1043
1044                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
1045
1046                 # Enabled article-related sidebar, toplinks, etc.
1047                 $wgOut->setArticleRelated( true );
1048
1049                 if ( $this->formtype == 'preview' ) {
1050                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
1051                 }
1052
1053                 if ( $this->isConflict ) {
1054                         $s = wfMsg( 'editconflict', $wgTitle->getPrefixedText() );
1055                         $wgOut->setPageTitle( $s );
1056                         $wgOut->addWikiMsg( 'explainconflict' );
1057
1058                         $this->textbox2 = $this->textbox1;
1059                         $this->textbox1 = $this->getContent();
1060                         $this->edittime = $this->mArticle->getTimestamp();
1061                 } else {
1062                         if( $this->section != '' ) {
1063                                 if( $this->section == 'new' ) {
1064                                         $s = wfMsg('editingcomment', $wgTitle->getPrefixedText() );
1065                                 } else {
1066                                         $s = wfMsg('editingsection', $wgTitle->getPrefixedText() );
1067                                         $matches = array();
1068                                         if( !$this->summary && !$this->preview && !$this->diff ) {
1069                                                 preg_match( "/^(=+)(.+)\\1/mi",
1070                                                         $this->textbox1,
1071                                                         $matches );
1072                                                 if( !empty( $matches[2] ) ) {
1073                                                         global $wgParser;
1074                                                         $this->summary = "/* " .
1075                                                                 $wgParser->stripSectionName(trim($matches[2])) .
1076                                                                 " */ ";
1077                                                 }
1078                                         }
1079                                 }
1080                         } else {
1081                                 $s = wfMsg( 'editing', $wgTitle->getPrefixedText() );
1082                         }
1083                         $wgOut->setPageTitle( $s );
1084
1085                         if ( $this->missingComment ) {
1086                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommenttext">$1</div>',  'missingcommenttext' );
1087                         }
1088
1089                         if( $this->missingSummary && $this->section != 'new' ) {
1090                                 $wgOut->wrapWikiMsg( '<div id="mw-missingsummary">$1</div>', 'missingsummary' );
1091                         }
1092
1093                         if( $this->missingSummary && $this->section == 'new' ) {
1094                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommentheader">$1</div>', 'missingcommentheader' );
1095                         }
1096
1097                         if( $this->hookError !== '' ) {
1098                                 $wgOut->addWikiText( $this->hookError );
1099                         }
1100
1101                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1102                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1103                         }
1104                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1105                         // Let sysop know that this will make private content public if saved
1106
1107                                 if( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1108                                         $wgOut->addWikiMsg( 'rev-deleted-text-permission' );
1109                                 } else if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1110                                         $wgOut->addWikiMsg( 'rev-deleted-text-view' );
1111                                 }
1112
1113                                 if( !$this->mArticle->mRevision->isCurrent() ) {
1114                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1115                                         $wgOut->addWikiMsg( 'editingold' );
1116                                 }
1117                         }
1118                 }
1119
1120                 if( wfReadOnly() ) {
1121                         $wgOut->addHTML( '<div id="mw-read-only-warning">'.wfMsgWikiHTML( 'readonlywarning' ).'</div>' );
1122                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
1123                         $wgOut->addHTML( '<div id="mw-anon-edit-warning">'.wfMsgWikiHTML( 'anoneditwarning' ).'</div>' );
1124                 } else {
1125                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
1126                                 # Check the skin exists
1127                                 if( $this->isValidCssJsSubpage ) {
1128                                         $wgOut->addWikiMsg( 'usercssjsyoucanpreview' );
1129                                 } else {
1130                                         $wgOut->addWikiMsg( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() );
1131                                 }
1132                         }
1133                 }
1134
1135                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1136                         # Show a warning if editing an interface message
1137                         $wgOut->addWikiMsg( 'editinginterface' );
1138                 } elseif( $this->mTitle->isProtected( 'edit' ) ) {
1139                         # Is the title semi-protected?
1140                         if( $this->mTitle->isSemiProtected() ) {
1141                                 $noticeMsg = 'semiprotectedpagewarning';
1142                         } else {
1143                                 # Then it must be protected based on static groups (regular)
1144                                 $noticeMsg = 'protectedpagewarning';
1145                         }
1146                         $wgOut->addWikiMsg( $noticeMsg );
1147                 }
1148                 if ( $this->mTitle->isCascadeProtected() ) {
1149                         # Is this page under cascading protection from some source pages?
1150                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1151                         $notice = "$1\n";
1152                         if ( count($cascadeSources) > 0 ) {
1153                                 # Explain, and list the titles responsible
1154                                 foreach( $cascadeSources as $page ) {
1155                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1156                                 }
1157                         }
1158                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', count($cascadeSources) ) );
1159                 }
1160                 if( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) != array() ){
1161                         $wgOut->addWikiMsg( 'titleprotectedwarning' );
1162                 }
1163
1164                 if ( $this->kblength === false ) {
1165                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1166                 }
1167                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1168                         $wgOut->addWikiMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize );
1169                 } elseif( $this->kblength > 29 ) {
1170                         $wgOut->addWikiMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) );
1171                 }
1172
1173                 #need to parse the preview early so that we know which templates are used,
1174                 #otherwise users with "show preview after edit box" will get a blank list
1175                 if ( $this->formtype == 'preview' ) {
1176                         $previewOutput = $this->getPreviewText();
1177                 }
1178
1179                 $rows = $wgUser->getIntOption( 'rows' );
1180                 $cols = $wgUser->getIntOption( 'cols' );
1181
1182                 $ew = $wgUser->getOption( 'editwidth' );
1183                 if ( $ew ) $ew = " style=\"width:100%\"";
1184                 else $ew = '';
1185
1186                 $q = 'action=submit';
1187                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
1188                 $action = $wgTitle->escapeLocalURL( $q );
1189
1190                 $summary = wfMsg('summary');
1191                 $subject = wfMsg('subject');
1192
1193                 $cancel = $sk->makeKnownLink( $wgTitle->getPrefixedText(),
1194                                 wfMsgExt('cancel', array('parseinline')) );
1195                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1196                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1197                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1198                         htmlspecialchars( wfMsg( 'newwindow' ) );
1199
1200                 global $wgRightsText;
1201                 if ( $wgRightsText ) {
1202                         $copywarnMsg = array( 'copyrightwarning',
1203                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1204                                 $wgRightsText );
1205                 } else {
1206                         $copywarnMsg = array( 'copyrightwarning2',
1207                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
1208                 }
1209
1210                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1211                         # prepare toolbar for edit buttons
1212                         $toolbar = EditPage::getEditToolbar();
1213                 } else {
1214                         $toolbar = '';
1215                 }
1216
1217                 // activate checkboxes if user wants them to be always active
1218                 if( !$this->preview && !$this->diff ) {
1219                         # Sort out the "watch" checkbox
1220                         if( $wgUser->getOption( 'watchdefault' ) ) {
1221                                 # Watch all edits
1222                                 $this->watchthis = true;
1223                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1224                                 # Watch creations
1225                                 $this->watchthis = true;
1226                         } elseif( $this->mTitle->userIsWatching() ) {
1227                                 # Already watched
1228                                 $this->watchthis = true;
1229                         }
1230
1231                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1232                 }
1233
1234                 $wgOut->addHTML( $this->editFormPageTop );
1235
1236                 if ( $wgUser->getOption( 'previewontop' ) ) {
1237
1238                         if ( 'preview' == $this->formtype ) {
1239                                 $this->showPreview( $previewOutput );
1240                         } else {
1241                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1242                         }
1243
1244                         if ( 'diff' == $this->formtype ) {
1245                                 $this->showDiff();
1246                         }
1247                 }
1248
1249
1250                 $wgOut->addHTML( $this->editFormTextTop );
1251
1252                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1253                 # Otherwise, show a summary field at the bottom
1254                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
1255
1256                 # If a blank edit summary was previously provided, and the appropriate
1257                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1258                 # user being bounced back more than once in the event that a summary
1259                 # is not required.
1260                 #####
1261                 # For a bit more sophisticated detection of blank summaries, hash the
1262                 # automatic one and pass that in the hidden field wpAutoSummary.
1263                 $summaryhiddens =  '';
1264                 if( $this->missingSummary ) $summaryhiddens .= Xml::hidden( 'wpIgnoreBlankSummary', true );
1265                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1266                 $summaryhiddens .= Xml::hidden( 'wpAutoSummary', $autosumm );
1267                 if( $this->section == 'new' ) {
1268                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' />{$summaryhiddens}<br />";
1269                         $editsummary = "<div class='editOptions'>\n";
1270                         global $wgParser;
1271                         $formattedSummary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $this->summary ) );
1272                         $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $formattedSummary, $this->mTitle, true )."</div>\n" : '';
1273                         $summarypreview = '';
1274                 } else {
1275                         $commentsubject = '';
1276                         $editsummary="<div class='editOptions'>\n<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' />{$summaryhiddens}<br />";
1277                         $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1278                         $subjectpreview = '';
1279                 }
1280
1281                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1282                 if( !$this->preview && !$this->diff ) {
1283                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1284                 }
1285                 $templates = ($this->preview || $this->section != '') ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
1286                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1287
1288                 $hiddencats = $this->mArticle->getHiddenCategories();
1289                 $formattedhiddencats = $sk->formatHiddenCategories( $hiddencats );
1290
1291                 global $wgUseMetadataEdit ;
1292                 if ( $wgUseMetadataEdit ) {
1293                         $metadata = $this->mMetaData ;
1294                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1295                         $top = wfMsgWikiHtml( 'metadata_help' );
1296                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1297                 }
1298                 else $metadata = "" ;
1299
1300                 $hidden = '';
1301                 $recreate = '';
1302                 if ($this->wasDeletedSinceLastEdit()) {
1303                         if ( 'save' != $this->formtype ) {
1304                                 $wgOut->addWikiMsg('deletedwhileediting');
1305                         } else {
1306                                 // Hide the toolbar and edit area, use can click preview to get it back
1307                                 // Add an confirmation checkbox and explanation.
1308                                 $toolbar = '';
1309                                 $hidden = 'type="hidden" style="display:none;"';
1310                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
1311                                 $recreate .=
1312                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
1313                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
1314                         }
1315                 }
1316
1317                 $tabindex = 2;
1318
1319                 $checkboxes = self::getCheckboxes( $tabindex, $sk,
1320                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1321
1322                 $checkboxhtml = implode( $checkboxes, "\n" );
1323
1324                 $buttons = $this->getEditButtons( $tabindex );
1325                 $buttonshtml = implode( $buttons, "\n" );
1326
1327                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1328                         ? '' : Xml::hidden( 'safemode', '1' );
1329
1330                 $wgOut->addHTML( <<<END
1331 {$toolbar}
1332 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1333 END
1334 );
1335
1336                 if( is_callable( $formCallback ) ) {
1337                         call_user_func_array( $formCallback, array( &$wgOut ) );
1338                 }
1339
1340                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1341
1342                 // Put these up at the top to ensure they aren't lost on early form submission
1343                 $wgOut->addHTML( "
1344 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1345 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1346 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1347 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1348
1349                 $encodedtext = htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) );
1350                 if( $encodedtext !== '' ) {
1351                         // Ensure there's a newline at the end, otherwise adding lines
1352                         // is awkward.
1353                         // But don't add a newline if the ext is empty, or Firefox in XHTML
1354                         // mode will show an extra newline. A bit annoying.
1355                         $encodedtext .= "\n";
1356                 }
1357
1358                 $wgOut->addHTML( <<<END
1359 $recreate
1360 {$commentsubject}
1361 {$subjectpreview}
1362 {$this->editFormTextBeforeContent}
1363 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1364 cols='{$cols}'{$ew} $hidden>{$encodedtext}</textarea>
1365 END
1366 );
1367
1368                 $wgOut->wrapWikiMsg( "<div id=\"editpage-copywarn\">\n$1\n</div>", $copywarnMsg );
1369                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1370                 $wgOut->addHTML( "
1371 {$metadata}
1372 {$editsummary}
1373 {$summarypreview}
1374 {$checkboxhtml}
1375 {$safemodehtml}
1376 ");
1377
1378                 $wgOut->addHTML(
1379 "<div class='editButtons'>
1380 {$buttonshtml}
1381         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1382 </div><!-- editButtons -->
1383 </div><!-- editOptions -->");
1384
1385                 /**
1386                  * To make it harder for someone to slip a user a page
1387                  * which submits an edit form to the wiki without their
1388                  * knowledge, a random token is associated with the login
1389                  * session. If it's not passed back with the submission,
1390                  * we won't save the page, or render user JavaScript and
1391                  * CSS previews.
1392                  *
1393                  * For anon editors, who may not have a session, we just
1394                  * include the constant suffix to prevent editing from
1395                  * broken text-mangling proxies.
1396                  */
1397                 $token = htmlspecialchars( $wgUser->editToken() );
1398                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1399
1400                 $wgOut->addHtml( '<div class="mw-editTools">' );
1401                 $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
1402                 $wgOut->addHtml( '</div>' );
1403
1404                 $wgOut->addHTML( $this->editFormTextAfterTools );
1405
1406                 $wgOut->addHTML( "
1407 <div class='templatesUsed'>
1408 {$formattedtemplates}
1409 </div>
1410 <div class='hiddencats'>
1411 {$formattedhiddencats}
1412 </div>
1413 ");
1414
1415                 if ( $this->isConflict && wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
1416                         $wgOut->wrapWikiMsg( '==$1==', "yourdiff" );
1417
1418                         $de = new DifferenceEngine( $this->mTitle );
1419                         $de->setText( $this->textbox2, $this->textbox1 );
1420                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1421
1422                         $wgOut->wrapWikiMsg( '==$1==', "yourtext" );
1423                         $wgOut->addHTML( "<textarea tabindex='6' id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}'>"
1424                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1425                 }
1426                 $wgOut->addHTML( $this->editFormTextBottom );
1427                 $wgOut->addHTML( "</form>\n" );
1428                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1429
1430                         if ( $this->formtype == 'preview') {
1431                                 $this->showPreview( $previewOutput );
1432                         } else {
1433                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1434                         }
1435
1436                         if ( $this->formtype == 'diff') {
1437                                 $this->showDiff();
1438                         }
1439
1440                 }
1441
1442                 wfProfileOut( $fname );
1443         }
1444
1445         /**
1446          * Append preview output to $wgOut.
1447          * Includes category rendering if this is a category page.
1448          *
1449          * @param string $text The HTML to be output for the preview.
1450          */
1451         private function showPreview( $text ) {
1452                 global $wgOut;
1453
1454                 $wgOut->addHTML( '<div id="wikiPreview">' );
1455                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1456                         $this->mArticle->openShowCategory();
1457                 }
1458                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1459                 $wgOut->addHTML( $text );
1460                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1461                         $this->mArticle->closeShowCategory();
1462                 }
1463                 $wgOut->addHTML( '</div>' );
1464         }
1465
1466         /**
1467          * Live Preview lets us fetch rendered preview page content and
1468          * add it to the page without refreshing the whole page.
1469          * If not supported by the browser it will fall through to the normal form
1470          * submission method.
1471          *
1472          * This function outputs a script tag to support live preview, and
1473          * returns an onclick handler which should be added to the attributes
1474          * of the preview button
1475          */
1476         function doLivePreviewScript() {
1477                 global $wgOut, $wgTitle;
1478                 $wgOut->addScriptFile( 'preview.js' );
1479                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1480                 return "return !lpDoPreview(" .
1481                         "editform.wpTextbox1.value," .
1482                         '"' . $liveAction . '"' . ")";
1483         }
1484
1485         function getLastDelete() {
1486                 $dbr = wfGetDB( DB_SLAVE );
1487                 $fname = 'EditPage::getLastDelete';
1488                 $res = $dbr->select(
1489                         array( 'logging', 'user' ),
1490                         array( 'log_type',
1491                                'log_action',
1492                                'log_timestamp',
1493                                'log_user',
1494                                'log_namespace',
1495                                'log_title',
1496                                'log_comment',
1497                                'log_params',
1498                                'user_name', ),
1499                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1500                                'log_title' => $this->mTitle->getDBkey(),
1501                                'log_type' => 'delete',
1502                                'log_action' => 'delete',
1503                                'user_id=log_user' ),
1504                         $fname,
1505                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1506
1507                 if($dbr->numRows($res) == 1) {
1508                         while ( $x = $dbr->fetchObject ( $res ) )
1509                                 $data = $x;
1510                         $dbr->freeResult ( $res ) ;
1511                 } else {
1512                         $data = null;
1513                 }
1514                 return $data;
1515         }
1516
1517         /**
1518          * @todo document
1519          */
1520         function getPreviewText() {
1521                 global $wgOut, $wgUser, $wgTitle, $wgParser, $wgLang, $wgContLang;
1522
1523                 $fname = 'EditPage::getPreviewText';
1524                 wfProfileIn( $fname );
1525
1526                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1527                         if ( $this->mTokenOkExceptSuffix ) {
1528                                 $note = wfMsg( 'token_suffix_mismatch' );
1529                         } else {
1530                                 $note = wfMsg( 'session_fail_preview' );
1531                         }
1532                 } else {
1533                         $note = wfMsg( 'previewnote' );
1534                 }
1535
1536                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1537                 $parserOptions->setEditSection( false );
1538
1539                 global $wgRawHtml;
1540                 if( $wgRawHtml && !$this->mTokenOk ) {
1541                         // Could be an offsite preview attempt. This is very unsafe if
1542                         // HTML is enabled, as it could be an attack.
1543                         return $wgOut->parse( "<div class='previewnote'>" .
1544                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1545                 }
1546
1547                 # don't parse user css/js, show message about preview
1548                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1549
1550                 if ( $this->isCssJsSubpage ) {
1551                         if(preg_match("/\\.css$/", $this->mTitle->getText() ) ) {
1552                                 $previewtext = wfMsg('usercsspreview');
1553                         } else if(preg_match("/\\.js$/", $this->mTitle->getText() ) ) {
1554                                 $previewtext = wfMsg('userjspreview');
1555                         }
1556                         $parserOptions->setTidy(true);
1557                         $parserOutput = $wgParser->parse( $previewtext , $this->mTitle, $parserOptions );
1558                         $wgOut->addHTML( $parserOutput->mText );
1559                         $previewHTML = '';
1560                 } else {
1561                         $toparse = $this->textbox1;
1562
1563                         # If we're adding a comment, we need to show the
1564                         # summary as the headline
1565                         if($this->section=="new" && $this->summary!="") {
1566                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1567                         }
1568
1569                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData;
1570
1571                         // Parse mediawiki messages with correct target language
1572                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1573                                 $pos = strrpos( $this->mTitle->getText(), '/' );
1574                                 if ( $pos !== false ) {
1575                                         $code = substr( $this->mTitle->getText(), $pos+1 );
1576                                         switch ($code) {
1577                                                 case $wgLang->getCode():
1578                                                         $obj = $wgLang; break;
1579                                                 case $wgContLang->getCode():
1580                                                         $obj = $wgContLang; break;
1581                                                 default:
1582                                                         $obj = Language::factory( $code );
1583                                         }
1584                                         $parserOptions->setTargetLanguage( $obj );
1585                                 }
1586                         }
1587
1588
1589                         $parserOptions->setTidy(true);
1590                         $parserOptions->enableLimitReport();
1591                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ),
1592                                         $this->mTitle, $parserOptions );
1593
1594                         $previewHTML = $parserOutput->getText();
1595                         $wgOut->addParserOutputNoText( $parserOutput );
1596
1597                         # ParserOutput might have altered the page title, so reset it
1598                         # Also, use the title defined by DISPLAYTITLE magic word when present
1599                         if( ( $dt = $parserOutput->getDisplayTitle() ) !== false ) {
1600                                 $wgOut->setPageTitle( wfMsg( 'editing', $dt ) );
1601                         } else {
1602                                 $wgOut->setPageTitle( wfMsg( 'editing', $wgTitle->getPrefixedText() ) );
1603                         }
1604
1605                         foreach ( $parserOutput->getTemplates() as $ns => $template)
1606                                 foreach ( array_keys( $template ) as $dbk)
1607                                         $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
1608
1609                         if ( count( $parserOutput->getWarnings() ) ) {
1610                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
1611                         }
1612                 }
1613
1614                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1615                         "<div class='previewnote'>" . $wgOut->parse( $note ) . "</div>\n";
1616                 if ( $this->isConflict ) {
1617                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1618                 }
1619
1620                 if( $wgUser->getOption( 'previewontop' ) ) {
1621                         // Spacer for the edit toolbar
1622                         $previewfoot = '<p><br /></p>';
1623                 } else {
1624                         $previewfoot = '';
1625                 }
1626
1627                 wfProfileOut( $fname );
1628                 return $previewhead . $previewHTML . $previewfoot;
1629         }
1630
1631         /**
1632          * Call the stock "user is blocked" page
1633          */
1634         function blockedPage() {
1635                 global $wgOut, $wgUser;
1636                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1637
1638                 # If the user made changes, preserve them when showing the markup
1639                 # (This happens when a user is blocked during edit, for instance)
1640                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1641                 if( $first ) {
1642                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1643                 } else {
1644                         $source = $this->textbox1;
1645                 }
1646
1647                 # Spit out the source or the user's modified version
1648                 if( $source !== false ) {
1649                         $rows = $wgUser->getOption( 'rows' );
1650                         $cols = $wgUser->getOption( 'cols' );
1651                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1652                         $wgOut->addHtml( '<hr />' );
1653                         $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
1654                         # Why we don't use Xml::element here?
1655                         # Is it because if $source is '', it returns <textarea />?
1656                         $wgOut->addHtml( Xml::openElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . Xml::closeElement( 'textarea' ) );
1657                 }
1658         }
1659
1660         /**
1661          * Produce the stock "please login to edit pages" page
1662          */
1663         function userNotLoggedInPage() {
1664                 global $wgUser, $wgOut, $wgTitle;
1665                 $skin = $wgUser->getSkin();
1666
1667                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1668                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $wgTitle->getPrefixedUrl() );
1669
1670                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1671                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1672                 $wgOut->setArticleRelated( false );
1673
1674                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1675                 $wgOut->returnToMain( false, $wgTitle );
1676         }
1677
1678         /**
1679          * Creates a basic error page which informs the user that
1680          * they have attempted to edit a nonexistant section.
1681          */
1682         function noSuchSectionPage() {
1683                 global $wgOut, $wgTitle;
1684
1685                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1686                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1687                 $wgOut->setArticleRelated( false );
1688
1689                 $wgOut->addWikiMsg( 'nosuchsectiontext', $this->section );
1690                 $wgOut->returnToMain( false, $wgTitle );
1691         }
1692
1693         /**
1694          * Produce the stock "your edit contains spam" page
1695          *
1696          * @param $match Text which triggered one or more filters
1697          */
1698         function spamPage( $match = false ) {
1699                 global $wgOut, $wgTitle;
1700
1701                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1702                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1703                 $wgOut->setArticleRelated( false );
1704
1705                 $wgOut->addHtml( '<div id="spamprotected">' );
1706                 $wgOut->addWikiMsg( 'spamprotectiontext' );
1707                 if ( $match )
1708                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
1709                 $wgOut->addHtml( '</div>' );
1710
1711                 $wgOut->returnToMain( false, $wgTitle );
1712         }
1713
1714         /**
1715          * @private
1716          * @todo document
1717          */
1718         function mergeChangesInto( &$editText ){
1719                 $fname = 'EditPage::mergeChangesInto';
1720                 wfProfileIn( $fname );
1721
1722                 $db = wfGetDB( DB_MASTER );
1723
1724                 // This is the revision the editor started from
1725                 $baseRevision = Revision::loadFromTimestamp(
1726                         $db, $this->mTitle, $this->edittime );
1727                 if( is_null( $baseRevision ) ) {
1728                         wfProfileOut( $fname );
1729                         return false;
1730                 }
1731                 $baseText = $baseRevision->getText();
1732
1733                 // The current state, we want to merge updates into it
1734                 $currentRevision =  Revision::loadFromTitle(
1735                         $db, $this->mTitle );
1736                 if( is_null( $currentRevision ) ) {
1737                         wfProfileOut( $fname );
1738                         return false;
1739                 }
1740                 $currentText = $currentRevision->getText();
1741
1742                 $result = '';
1743                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1744                         $editText = $result;
1745                         wfProfileOut( $fname );
1746                         return true;
1747                 } else {
1748                         wfProfileOut( $fname );
1749                         return false;
1750                 }
1751         }
1752
1753         /**
1754          * Check if the browser is on a blacklist of user-agents known to
1755          * mangle UTF-8 data on form submission. Returns true if Unicode
1756          * should make it through, false if it's known to be a problem.
1757          * @return bool
1758          * @private
1759          */
1760         function checkUnicodeCompliantBrowser() {
1761                 global $wgBrowserBlackList;
1762                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1763                         // No User-Agent header sent? Trust it by default...
1764                         return true;
1765                 }
1766                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1767                 foreach ( $wgBrowserBlackList as $browser ) {
1768                         if ( preg_match($browser, $currentbrowser) ) {
1769                                 return false;
1770                         }
1771                 }
1772                 return true;
1773         }
1774
1775         /**
1776          * @deprecated use $wgParser->stripSectionName()
1777          */
1778         function pseudoParseSectionAnchor( $text ) {
1779                 global $wgParser;
1780                 return $wgParser->stripSectionName( $text );
1781         }
1782
1783         /**
1784          * Format an anchor fragment as it would appear for a given section name
1785          * @param string $text
1786          * @return string
1787          * @private
1788          */
1789         function sectionAnchor( $text ) {
1790                 global $wgParser;
1791                 return $wgParser->guessSectionNameFromWikiText( $text );
1792         }
1793
1794         /**
1795          * Shows a bulletin board style toolbar for common editing functions.
1796          * It can be disabled in the user preferences.
1797          * The necessary JavaScript code can be found in skins/common/edit.js.
1798          *
1799          * @return string
1800          */
1801         static function getEditToolbar() {
1802                 global $wgStylePath, $wgContLang, $wgLang, $wgJsMimeType;
1803
1804                 /**
1805                  * toolarray an array of arrays which each include the filename of
1806                  * the button image (without path), the opening tag, the closing tag,
1807                  * and optionally a sample text that is inserted between the two when no
1808                  * selection is highlighted.
1809                  * The tip text is shown when the user moves the mouse over the button.
1810                  *
1811                  * Already here are accesskeys (key), which are not used yet until someone
1812                  * can figure out a way to make them work in IE. However, we should make
1813                  * sure these keys are not defined on the edit page.
1814                  */
1815                 $toolarray = array(
1816                         array(
1817                                 'image'  => $wgLang->getImageFile('button-bold'),
1818                                 'id'     => 'mw-editbutton-bold',
1819                                 'open'   => '\'\'\'',
1820                                 'close'  => '\'\'\'',
1821                                 'sample' => wfMsg('bold_sample'),
1822                                 'tip'    => wfMsg('bold_tip'),
1823                                 'key'    => 'B'
1824                         ),
1825                         array(
1826                                 'image'  => $wgLang->getImageFile('button-italic'),
1827                                 'id'     => 'mw-editbutton-italic',
1828                                 'open'   => '\'\'',
1829                                 'close'  => '\'\'',
1830                                 'sample' => wfMsg('italic_sample'),
1831                                 'tip'    => wfMsg('italic_tip'),
1832                                 'key'    => 'I'
1833                         ),
1834                         array(
1835                                 'image'  => $wgLang->getImageFile('button-link'),
1836                                 'id'     => 'mw-editbutton-link',
1837                                 'open'   => '[[',
1838                                 'close'  => ']]',
1839                                 'sample' => wfMsg('link_sample'),
1840                                 'tip'    => wfMsg('link_tip'),
1841                                 'key'    => 'L'
1842                         ),
1843                         array(
1844                                 'image'  => $wgLang->getImageFile('button-extlink'),
1845                                 'id'     => 'mw-editbutton-extlink',
1846                                 'open'   => '[',
1847                                 'close'  => ']',
1848                                 'sample' => wfMsg('extlink_sample'),
1849                                 'tip'    => wfMsg('extlink_tip'),
1850                                 'key'    => 'X'
1851                         ),
1852                         array(
1853                                 'image'  => $wgLang->getImageFile('button-headline'),
1854                                 'id'     => 'mw-editbutton-headline',
1855                                 'open'   => "\n== ",
1856                                 'close'  => " ==\n",
1857                                 'sample' => wfMsg('headline_sample'),
1858                                 'tip'    => wfMsg('headline_tip'),
1859                                 'key'    => 'H'
1860                         ),
1861                         array(
1862                                 'image'  => $wgLang->getImageFile('button-image'),
1863                                 'id'     => 'mw-editbutton-image',
1864                                 'open'   => '[['.$wgContLang->getNsText(NS_IMAGE).':',
1865                                 'close'  => ']]',
1866                                 'sample' => wfMsg('image_sample'),
1867                                 'tip'    => wfMsg('image_tip'),
1868                                 'key'    => 'D'
1869                         ),
1870                         array(
1871                                 'image'  => $wgLang->getImageFile('button-media'),
1872                                 'id'     => 'mw-editbutton-media',
1873                                 'open'   => '[['.$wgContLang->getNsText(NS_MEDIA).':',
1874                                 'close'  => ']]',
1875                                 'sample' => wfMsg('media_sample'),
1876                                 'tip'    => wfMsg('media_tip'),
1877                                 'key'    => 'M'
1878                         ),
1879                         array(
1880                                 'image'  => $wgLang->getImageFile('button-math'),
1881                                 'id'     => 'mw-editbutton-math',
1882                                 'open'   => "<math>",
1883                                 'close'  => "</math>",
1884                                 'sample' => wfMsg('math_sample'),
1885                                 'tip'    => wfMsg('math_tip'),
1886                                 'key'    => 'C'
1887                         ),
1888                         array(
1889                                 'image'  => $wgLang->getImageFile('button-nowiki'),
1890                                 'id'     => 'mw-editbutton-nowiki',
1891                                 'open'   => "<nowiki>",
1892                                 'close'  => "</nowiki>",
1893                                 'sample' => wfMsg('nowiki_sample'),
1894                                 'tip'    => wfMsg('nowiki_tip'),
1895                                 'key'    => 'N'
1896                         ),
1897                         array(
1898                                 'image'  => $wgLang->getImageFile('button-sig'),
1899                                 'id'     => 'mw-editbutton-signature',
1900                                 'open'   => '--~~~~',
1901                                 'close'  => '',
1902                                 'sample' => '',
1903                                 'tip'    => wfMsg('sig_tip'),
1904                                 'key'    => 'Y'
1905                         ),
1906                         array(
1907                                 'image'  => $wgLang->getImageFile('button-hr'),
1908                                 'id'     => 'mw-editbutton-hr',
1909                                 'open'   => "\n----\n",
1910                                 'close'  => '',
1911                                 'sample' => '',
1912                                 'tip'    => wfMsg('hr_tip'),
1913                                 'key'    => 'R'
1914                         )
1915                 );
1916                 $toolbar = "<div id='toolbar'>\n";
1917                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1918
1919                 foreach($toolarray as $tool) {
1920                         $params = array(
1921                                 $image = $wgStylePath.'/common/images/'.$tool['image'],
1922                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1923                                 // Older browsers show a "speedtip" type message only for ALT.
1924                                 // Ideally these should be different, realistically they
1925                                 // probably don't need to be.
1926                                 $tip = $tool['tip'],
1927                                 $open = $tool['open'],
1928                                 $close = $tool['close'],
1929                                 $sample = $tool['sample'],
1930                                 $cssId = $tool['id'],
1931                         );
1932
1933                         $paramList = implode( ',',
1934                                 array_map( array( 'Xml', 'encodeJsVar' ), $params ) );
1935                         $toolbar.="addButton($paramList);\n";
1936                 }
1937
1938                 $toolbar.="/*]]>*/\n</script>";
1939                 $toolbar.="\n</div>";
1940                 return $toolbar;
1941         }
1942
1943         /**
1944          * Returns an array of html code of the following checkboxes:
1945          * minor and watch
1946          *
1947          * @param $tabindex Current tabindex
1948          * @param $skin Skin object
1949          * @param $checked Array of checkbox => bool, where bool indicates the checked
1950          *                 status of the checkbox
1951          *
1952          * @return array
1953          */
1954         public static function getCheckboxes( &$tabindex, $skin, $checked ) {
1955                 global $wgUser;
1956
1957                 $checkboxes = array();
1958
1959                 $checkboxes['minor'] = '';
1960                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
1961                 if ( $wgUser->isAllowed('minoredit') ) {
1962                         $attribs = array(
1963                                 'tabindex'  => ++$tabindex,
1964                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
1965                                 'id'        => 'wpMinoredit',
1966                         );
1967                         $checkboxes['minor'] =
1968                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
1969                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltipAndAccesskey('minoredit').">{$minorLabel}</label>";
1970                 }
1971
1972                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
1973                 $checkboxes['watch'] = '';
1974                 if ( $wgUser->isLoggedIn() ) {
1975                         $attribs = array(
1976                                 'tabindex'  => ++$tabindex,
1977                                 'accesskey' => wfMsg( 'accesskey-watch' ),
1978                                 'id'        => 'wpWatchthis',
1979                         );
1980                         $checkboxes['watch'] =
1981                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
1982                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltipAndAccesskey('watch').">{$watchLabel}</label>";
1983                 }
1984                 return $checkboxes;
1985         }
1986
1987         /**
1988          * Returns an array of html code of the following buttons:
1989          * save, diff, preview and live
1990          *
1991          * @param $tabindex Current tabindex
1992          *
1993          * @return array
1994          */
1995         public function getEditButtons(&$tabindex) {
1996                 global $wgLivePreview, $wgUser;
1997
1998                 $buttons = array();
1999
2000                 $temp = array(
2001                         'id'        => 'wpSave',
2002                         'name'      => 'wpSave',
2003                         'type'      => 'submit',
2004                         'tabindex'  => ++$tabindex,
2005                         'value'     => wfMsg('savearticle'),
2006                         'accesskey' => wfMsg('accesskey-save'),
2007                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2008                 );
2009                 $buttons['save'] = Xml::element('input', $temp, '');
2010
2011                 ++$tabindex; // use the same for preview and live preview
2012                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
2013                         $temp = array(
2014                                 'id'        => 'wpPreview',
2015                                 'name'      => 'wpPreview',
2016                                 'type'      => 'submit',
2017                                 'tabindex'  => $tabindex,
2018                                 'value'     => wfMsg('showpreview'),
2019                                 'accesskey' => '',
2020                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2021                                 'style'     => 'display: none;',
2022                         );
2023                         $buttons['preview'] = Xml::element('input', $temp, '');
2024
2025                         $temp = array(
2026                                 'id'        => 'wpLivePreview',
2027                                 'name'      => 'wpLivePreview',
2028                                 'type'      => 'submit',
2029                                 'tabindex'  => $tabindex,
2030                                 'value'     => wfMsg('showlivepreview'),
2031                                 'accesskey' => wfMsg('accesskey-preview'),
2032                                 'title'     => '',
2033                                 'onclick'   => $this->doLivePreviewScript(),
2034                         );
2035                         $buttons['live'] = Xml::element('input', $temp, '');
2036                 } else {
2037                         $temp = array(
2038                                 'id'        => 'wpPreview',
2039                                 'name'      => 'wpPreview',
2040                                 'type'      => 'submit',
2041                                 'tabindex'  => $tabindex,
2042                                 'value'     => wfMsg('showpreview'),
2043                                 'accesskey' => wfMsg('accesskey-preview'),
2044                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2045                         );
2046                         $buttons['preview'] = Xml::element('input', $temp, '');
2047                         $buttons['live'] = '';
2048                 }
2049
2050                 $temp = array(
2051                         'id'        => 'wpDiff',
2052                         'name'      => 'wpDiff',
2053                         'type'      => 'submit',
2054                         'tabindex'  => ++$tabindex,
2055                         'value'     => wfMsg('showdiff'),
2056                         'accesskey' => wfMsg('accesskey-diff'),
2057                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
2058                 );
2059                 $buttons['diff'] = Xml::element('input', $temp, '');
2060
2061                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons ) );
2062                 return $buttons;
2063         }
2064
2065         /**
2066          * Output preview text only. This can be sucked into the edit page
2067          * via JavaScript, and saves the server time rendering the skin as
2068          * well as theoretically being more robust on the client (doesn't
2069          * disturb the edit box's undo history, won't eat your text on
2070          * failure, etc).
2071          *
2072          * @todo This doesn't include category or interlanguage links.
2073          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2074          *       or something...</s> that might also require more skin
2075          *       initialization, so check whether that's a problem.
2076          */
2077         function livePreview() {
2078                 global $wgOut;
2079                 $wgOut->disable();
2080                 header( 'Content-type: text/xml; charset=utf-8' );
2081                 header( 'Cache-control: no-cache' );
2082
2083                 $previewText = $this->getPreviewText();
2084                 #$categories = $skin->getCategoryLinks();
2085
2086                 $s =
2087                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2088                 Xml::tags( 'livepreview', null,
2089                         Xml::element( 'preview', null, $previewText )
2090                         #.      Xml::element( 'category', null, $categories )
2091                 );
2092                 echo $s;
2093         }
2094
2095
2096         /**
2097          * Get a diff between the current contents of the edit box and the
2098          * version of the page we're editing from.
2099          *
2100          * If this is a section edit, we'll replace the section as for final
2101          * save and then make a comparison.
2102          */
2103         function showDiff() {
2104                 $oldtext = $this->mArticle->fetchContent();
2105                 $newtext = $this->mArticle->replaceSection(
2106                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2107                 $newtext = $this->mArticle->preSaveTransform( $newtext );
2108                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
2109                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
2110                 if ( $oldtext !== false  || $newtext != '' ) {
2111                         $de = new DifferenceEngine( $this->mTitle );
2112                         $de->setText( $oldtext, $newtext );
2113                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2114                         $de->showDiffStyle();
2115                 } else {
2116                         $difftext = '';
2117                 }
2118
2119                 global $wgOut;
2120                 $wgOut->addHtml( '<div id="wikiDiff">' . $difftext . '</div>' );
2121         }
2122
2123         /**
2124          * Filter an input field through a Unicode de-armoring process if it
2125          * came from an old browser with known broken Unicode editing issues.
2126          *
2127          * @param WebRequest $request
2128          * @param string $field
2129          * @return string
2130          * @private
2131          */
2132         function safeUnicodeInput( $request, $field ) {
2133                 $text = rtrim( $request->getText( $field ) );
2134                 return $request->getBool( 'safemode' )
2135                         ? $this->unmakesafe( $text )
2136                         : $text;
2137         }
2138
2139         /**
2140          * Filter an output field through a Unicode armoring process if it is
2141          * going to an old browser with known broken Unicode editing issues.
2142          *
2143          * @param string $text
2144          * @return string
2145          * @private
2146          */
2147         function safeUnicodeOutput( $text ) {
2148                 global $wgContLang;
2149                 $codedText = $wgContLang->recodeForEdit( $text );
2150                 return $this->checkUnicodeCompliantBrowser()
2151                         ? $codedText
2152                         : $this->makesafe( $codedText );
2153         }
2154
2155         /**
2156          * A number of web browsers are known to corrupt non-ASCII characters
2157          * in a UTF-8 text editing environment. To protect against this,
2158          * detected browsers will be served an armored version of the text,
2159          * with non-ASCII chars converted to numeric HTML character references.
2160          *
2161          * Preexisting such character references will have a 0 added to them
2162          * to ensure that round-trips do not alter the original data.
2163          *
2164          * @param string $invalue
2165          * @return string
2166          * @private
2167          */
2168         function makesafe( $invalue ) {
2169                 // Armor existing references for reversability.
2170                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2171
2172                 $bytesleft = 0;
2173                 $result = "";
2174                 $working = 0;
2175                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2176                         $bytevalue = ord( $invalue{$i} );
2177                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
2178                                 $result .= chr( $bytevalue );
2179                                 $bytesleft = 0;
2180                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
2181                                 $working = $working << 6;
2182                                 $working += ($bytevalue & 0x3F);
2183                                 $bytesleft--;
2184                                 if( $bytesleft <= 0 ) {
2185                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2186                                 }
2187                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
2188                                 $working = $bytevalue & 0x1F;
2189                                 $bytesleft = 1;
2190                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
2191                                 $working = $bytevalue & 0x0F;
2192                                 $bytesleft = 2;
2193                         } else { //1111 0xxx
2194                                 $working = $bytevalue & 0x07;
2195                                 $bytesleft = 3;
2196                         }
2197                 }
2198                 return $result;
2199         }
2200
2201         /**
2202          * Reverse the previously applied transliteration of non-ASCII characters
2203          * back to UTF-8. Used to protect data from corruption by broken web browsers
2204          * as listed in $wgBrowserBlackList.
2205          *
2206          * @param string $invalue
2207          * @return string
2208          * @private
2209          */
2210         function unmakesafe( $invalue ) {
2211                 $result = "";
2212                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2213                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2214                                 $i += 3;
2215                                 $hexstring = "";
2216                                 do {
2217                                         $hexstring .= $invalue{$i};
2218                                         $i++;
2219                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2220
2221                                 // Do some sanity checks. These aren't needed for reversability,
2222                                 // but should help keep the breakage down if the editor
2223                                 // breaks one of the entities whilst editing.
2224                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
2225                                         $codepoint = hexdec($hexstring);
2226                                         $result .= codepointToUtf8( $codepoint );
2227                                 } else {
2228                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2229                                 }
2230                         } else {
2231                                 $result .= substr( $invalue, $i, 1 );
2232                         }
2233                 }
2234                 // reverse the transform that we made for reversability reasons.
2235                 return strtr( $result, array( "&#x0" => "&#x" ) );
2236         }
2237
2238         function noCreatePermission() {
2239                 global $wgOut;
2240                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2241                 $wgOut->addWikiMsg( 'nocreatetext' );
2242         }
2243
2244         /**
2245          * If there are rows in the deletion log for this page, show them,
2246          * along with a nice little note for the user
2247          *
2248          * @param OutputPage $out
2249          */
2250         private function showDeletionLog( $out ) {
2251                 global $wgUser;
2252                 $loglist = new LogEventsList( $wgUser->getSkin(), $out );
2253                 $pager = new LogPager( $loglist, 'delete', false, $this->mTitle->getPrefixedText() );
2254                 if( $pager->getNumRows() > 0 ) {
2255                         $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
2256                         $out->addWikiMsg( 'recreate-deleted-warn' );
2257                         $out->addHTML(
2258                                 $loglist->beginLogEventsList() .
2259                                 $pager->getBody() .
2260                                 $loglist->endLogEventsList()
2261                         );
2262                         $out->addHtml( '</div>' );
2263                 }
2264         }
2265
2266         /**
2267          * Attempt submission
2268          * @return bool false if output is done, true if the rest of the form should be displayed
2269          */
2270         function attemptSave() {
2271                 global $wgUser, $wgOut, $wgTitle, $wgRequest;
2272
2273                 $resultDetails = false;
2274                 $value = $this->internalAttemptSave( $resultDetails, $wgUser->isAllowed('bot') && $wgRequest->getBool('bot', true) );
2275
2276                 if( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
2277                         $this->didSave = true;
2278                 }
2279
2280                 switch ($value) {
2281                         case self::AS_HOOK_ERROR_EXPECTED:
2282                         case self::AS_CONTENT_TOO_BIG:
2283                         case self::AS_ARTICLE_WAS_DELETED:
2284                         case self::AS_CONFLICT_DETECTED:
2285                         case self::AS_SUMMARY_NEEDED:
2286                         case self::AS_TEXTBOX_EMPTY:
2287                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
2288                         case self::AS_END:
2289                                 return true;
2290
2291                         case self::AS_HOOK_ERROR:
2292                         case self::AS_FILTERING:
2293                         case self::AS_SUCCESS_NEW_ARTICLE:
2294                         case self::AS_SUCCESS_UPDATE:
2295                                 return false;
2296
2297                         case self::AS_SPAM_ERROR:
2298                                 $this->spamPage ( $resultDetails['spam'] );
2299                                 return false;
2300
2301                         case self::AS_BLOCKED_PAGE_FOR_USER:
2302                                 $this->blockedPage();
2303                                 return false;
2304
2305                         case self::AS_IMAGE_REDIRECT_ANON:
2306                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
2307                                 return false;
2308
2309                         case self::AS_READ_ONLY_PAGE_ANON:
2310                                 $this->userNotLoggedInPage();
2311                                 return false;
2312
2313                         case self::AS_READ_ONLY_PAGE_LOGGED:
2314                         case self::AS_READ_ONLY_PAGE:
2315                                 $wgOut->readOnlyPage();
2316                                 return false;
2317
2318                         case self::AS_RATE_LIMITED:
2319                                 $wgOut->rateLimited();
2320                                 return false;
2321
2322                         case self::AS_NO_CREATE_PERMISSION;
2323                                 $this->noCreatePermission();
2324                                 return;
2325
2326                         case self::AS_BLANK_ARTICLE:
2327                                 $wgOut->redirect( $wgTitle->getFullURL() );
2328                                 return false;
2329
2330                         case self::AS_IMAGE_REDIRECT_LOGGED:
2331                                 $wgOut->permissionRequired( 'upload' );
2332                                 return false;
2333                 }
2334         }
2335 }