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         var $mBaseRevision = false;
  66
  67         # Form values
  68         var $save = false, $preview = false, $diff = false;
  69         var $minoredit = false, $watchthis = false, $recreate = false;
  70         var $textbox1 = '', $textbox2 = '', $summary = '';
  71         var $edittime = '', $section = '', $starttime = '';
  72         var $oldid = 0, $editintro = '', $scrolltop = null;
  73
  74         # Placeholders for text injection by hooks (must be HTML)
  75         # extensions should take care to _append_ to the present value
  76         public $editFormPageTop; // Before even the preview
  77         public $editFormTextTop;
  78         public $editFormTextBeforeContent;
  79         public $editFormTextAfterWarn;
  80         public $editFormTextAfterTools;
  81         public $editFormTextBottom;
  82
  83         /* $didSave should be set to true whenever an article was succesfully altered. */
  84         public $didSave = false;
  85
  86         public $suppressIntro = false;
  87
  88         /**
  89          * @todo document
  90          * @param $article
  91          */
  92         function EditPage( $article ) {
  93                 $this->mArticle =& $article;
  94                 $this->mTitle = $article->getTitle();
  95
  96                 # Placeholders for text injection by hooks (empty per default)
  97                 $this->editFormPageTop =
  98                 $this->editFormTextTop =
  99                 $this->editFormTextBeforeContent =
 100                 $this->editFormTextAfterWarn =
 101                 $this->editFormTextAfterTools =
 102                 $this->editFormTextBottom = "";
 103         }
 104
 105         /**
 106          * Fetch initial editing page content.
 107          * @private
 108          */
 109         function getContent( $def_text = '' ) {
 110                 global $wgOut, $wgRequest, $wgParser, $wgMessageCache;
 111
 112                 # Get variables from query string :P
 113                 $section = $wgRequest->getVal( 'section' );
 114                 $preload = $wgRequest->getVal( 'preload' );
 115                 $undoafter = $wgRequest->getVal( 'undoafter' );
 116                 $undo = $wgRequest->getVal( 'undo' );
 117
 118                 wfProfileIn( __METHOD__ );
 119
 120                 $text = '';
 121                 if( !$this->mTitle->exists() ) {
 122                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 123                                 $wgMessageCache->loadAllMessages();
 124                                 # If this is a system message, get the default text.
 125                                 $text = wfMsgWeirdKey ( $this->mTitle->getText() ) ;
 126                         } else {
 127                                 # If requested, preload some text.
 128                                 $text = $this->getPreloadedText( $preload );
 129                         }
 130                         # We used to put MediaWiki:Newarticletext here if
 131                         # $text was empty at this point.
 132                         # This is now shown above the edit box instead.
 133                 } else {
 134                         // FIXME: may be better to use Revision class directly
 135                         // But don't mess with it just yet. Article knows how to
 136                         // fetch the page record from the high-priority server,
 137                         // which is needed to guarantee we don't pick up lagged
 138                         // information.
 139
 140                         $text = $this->mArticle->getContent();
 141
 142                         if ($undo > 0 && $undoafter > 0 && $undo < $undoafter) {
 143                                 # If they got undoafter and undo round the wrong way, switch them
 144                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 145                         }
 146
 147                         if ( $undo > 0 && $undo > $undoafter ) {
 148                                 # Undoing a specific edit overrides section editing; section-editing
 149                                 # doesn't work with undoing.
 150                                 if ( $undoafter ) {
 151                                         $undorev = Revision::newFromId($undo);
 152                                         $oldrev = Revision::newFromId($undoafter);
 153                                 } else {
 154                                         $undorev = Revision::newFromId($undo);
 155                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 156                                 }
 157
 158                                 # Sanity check, make sure it's the right page,
 159                                 # the revisions exist and they were not deleted.
 160                                 # Otherwise, $text will be left as-is.
 161                                 if( !is_null( $undorev ) && !is_null( $oldrev ) &&
 162                                         $undorev->getPage() == $oldrev->getPage() &&
 163                                         $undorev->getPage() == $this->mArticle->getID() &&
 164                                         !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 165                                         !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 166                                         $undorev_text = $undorev->getText();
 167                                         $oldrev_text = $oldrev->getText();
 168                                         $currev_text = $text;
 169
 170                                         if ( $currev_text != $undorev_text ) {
 171                                                 $result = wfMerge( $undorev_text, $oldrev_text, $currev_text, $text );
 172                                         } else {
 173                                                 # No use doing a merge if it's just a straight revert.
 174                                                 $text = $oldrev_text;
 175                                                 $result = true;
 176                                         }
 177                                         if( $result ) {
 178                                                 # Inform the user of our success and set an automatic edit summary
 179                                                 $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
 180                                                 $firstrev = $oldrev->getNext();
 181                                                 # If we just undid one rev, use an autosummary
 182                                                 if( $firstrev->mId == $undo ) {
 183                                                         $this->summary = wfMsgForContent('undo-summary', $undo, $undorev->getUserText());
 184                                                 }
 185                                                 $this->formtype = 'diff';
 186                                         } else {
 187                                                 # Warn the user that something went wrong
 188                                                 $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-failure' ) );
 189                                         }
 190                                 } else {
 191                                         // Failed basic sanity checks.
 192                                         // Older revisions may have been removed since the link
 193                                         // was created, or we may simply have got bogus input.
 194                                         $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-norev' ) );
 195                                 }
 196                         } else if( $section != '' ) {
 197                                 if( $section == 'new' ) {
 198                                         $text = $this->getPreloadedText( $preload );
 199                                 } else {
 200                                         $text = $wgParser->getSection( $text, $section, $def_text );
 201                                 }
 202                         }
 203                 }
 204
 205                 wfProfileOut( __METHOD__ );
 206                 return $text;
 207         }
 208
 209         /**
 210          * Get the contents of a page from its title and remove includeonly tags
 211          *
 212          * @param $preload String: the title of the page.
 213          * @return string The contents of the page.
 214          */
 215         protected function getPreloadedText($preload) {
 216                 if ( $preload === '' )
 217                         return '';
 218                 else {
 219                         $preloadTitle = Title::newFromText( $preload );
 220                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 221                                 $rev=Revision::newFromTitle($preloadTitle);
 222                                 if ( is_object( $rev ) ) {
 223                                         $text = $rev->getText();
 224                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 225                                         // its own mini-parser! -ævar
 226                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 227                                         return $text;
 228                                 } else
 229                                         return '';
 230                         }
 231                 }
 232         }
 233
 234         /**
 235          * This is the function that extracts metadata from the article body on the first view.
 236          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 237          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 238          */
 239         function extractMetaDataFromArticle () {
 240                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
 241                 $this->mMetaData = '' ;
 242                 if ( !$wgUseMetadataEdit ) return ;
 243                 if ( $wgMetadataWhitelist == '' ) return ;
 244                 $s = '' ;
 245                 $t = $this->getContent();
 246
 247                 # MISSING : <nowiki> filtering
 248
 249                 # Categories and language links
 250                 $t = explode ( "\n" , $t ) ;
 251                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
 252                 $cat = $ll = array() ;
 253                 foreach ( $t AS $key => $x )
 254                 {
 255                         $y = trim ( strtolower ( $x ) ) ;
 256                         while ( substr ( $y , 0 , 2 ) == '[[' )
 257                         {
 258                                 $y = explode ( ']]' , trim ( $x ) ) ;
 259                                 $first = array_shift ( $y ) ;
 260                                 $first = explode ( ':' , $first ) ;
 261                                 $ns = array_shift ( $first ) ;
 262                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
 263                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
 264                                 {
 265                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
 266                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
 267                                         else $ll[] = $add ;
 268                                         $x = implode ( ']]' , $y ) ;
 269                                         $t[$key] = $x ;
 270                                         $y = trim ( strtolower ( $x ) ) ;
 271                                 }
 272                         }
 273                 }
 274                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
 275                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
 276                 $t = implode ( "\n" , $t ) ;
 277
 278                 # Load whitelist
 279                 $sat = array () ; # stand-alone-templates; must be lowercase
 280                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
 281                 $wl_article = new Article ( $wl_title ) ;
 282                 $wl = explode ( "\n" , $wl_article->getContent() ) ;
 283                 foreach ( $wl AS $x )
 284                 {
 285                         $isentry = false ;
 286                         $x = trim ( $x ) ;
 287                         while ( substr ( $x , 0 , 1 ) == '*' )
 288                         {
 289                                 $isentry = true ;
 290                                 $x = trim ( substr ( $x , 1 ) ) ;
 291                         }
 292                         if ( $isentry )
 293                         {
 294                                 $sat[] = strtolower ( $x ) ;
 295                         }
 296
 297                 }
 298
 299                 # Templates, but only some
 300                 $t = explode ( '{{' , $t ) ;
 301                 $tl = array () ;
 302                 foreach ( $t AS $key => $x )
 303                 {
 304                         $y = explode ( '}}' , $x , 2 ) ;
 305                         if ( count ( $y ) == 2 )
 306                         {
 307                                 $z = $y[0] ;
 308                                 $z = explode ( '|' , $z ) ;
 309                                 $tn = array_shift ( $z ) ;
 310                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 311                                 {
 312                                         $tl[] = '{{' . $y[0] . '}}' ;
 313                                         $t[$key] = $y[1] ;
 314                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 315                                 }
 316                                 else $t[$key] = '{{' . $x ;
 317                         }
 318                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 319                         else $t[$key] = $x ;
 320                 }
 321                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 322                 $t = implode ( '' , $t ) ;
 323
 324                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 325                 $this->mArticle->mContent = $t ;
 326                 $this->mMetaData = $s ;
 327         }
 328
 329         protected function wasDeletedSinceLastEdit() {
 330                 /* Note that we rely on the logging table, which hasn't been always there,
 331                  * but that doesn't matter, because this only applies to brand new
 332                  * deletes.
 333                  */
 334                 if ( $this->deletedSinceEdit )
 335                         return true;
 336                 if ( $this->mTitle->isDeleted() ) {
 337                         $this->lastDelete = $this->getLastDelete();
 338                         if ( !is_null($this->lastDelete) ) {
 339                                 $deletetime = $this->lastDelete->log_timestamp;
 340                                 if ( ($deletetime - $this->starttime) > 0 ) {
 341                                         $this->deletedSinceEdit = true;
 342                                 }
 343                         }
 344                 }
 345                 return $this->deletedSinceEdit;
 346         }
 347
 348         function submit() {
 349                 $this->edit();
 350         }
 351
 352         /**
 353          * This is the function that gets called for "action=edit". It
 354          * sets up various member variables, then passes execution to
 355          * another function, usually showEditForm()
 356          *
 357          * The edit form is self-submitting, so that when things like
 358          * preview and edit conflicts occur, we get the same form back
 359          * with the extra stuff added.  Only when the final submission
 360          * is made and all is well do we actually save and redirect to
 361          * the newly-edited page.
 362          */
 363         function edit() {
 364                 global $wgOut, $wgUser, $wgRequest;
 365
 366                 if ( !wfRunHooks( 'AlternateEdit', array( &$this ) ) )
 367                         return;
 368
 369                 wfProfileIn( __METHOD__ );
 370                 wfDebug( __METHOD__.": enter\n" );
 371
 372                 // this is not an article
 373                 $wgOut->setArticleFlag(false);
 374
 375                 $this->importFormData( $wgRequest );
 376                 $this->firsttime = false;
 377
 378                 if( $this->live ) {
 379                         $this->livePreview();
 380                         wfProfileOut( __METHOD__ );
 381                         return;
 382                 }
 383
 384                 $wgOut->addScriptFile( 'edit.js' );
 385
 386                 if( wfReadOnly() ) {
 387                         $this->readOnlyPage( $this->getContent() );
 388                         wfProfileOut( __METHOD__ );
 389                         return;
 390                 }
 391
 392                 $permErrors = $this->mTitle->getUserPermissionsErrors('edit', $wgUser);
 393
 394                 if( !$this->mTitle->exists() ) {
 395                         $permErrors = array_merge( $permErrors,
 396                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors('create', $wgUser), $permErrors ) );
 397                 }
 398
 399                 # Ignore some permissions errors.
 400                 $remove = array();
 401                 foreach( $permErrors as $error ) {
 402                         if ( ( $this->preview || $this->diff ) &&
 403                                 ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext'))
 404                         {
 405                                 // Don't worry about blocks when previewing/diffing
 406                                 $remove[] = $error;
 407                         }
 408
 409                         if ($error[0] == 'readonlytext')
 410                         {
 411                                 if ($this->edit) {
 412                                         $this->formtype = 'preview';
 413                                 } elseif ($this->save || $this->preview || $this->diff) {
 414                                         $remove[] = $error;
 415                                 }
 416                         }
 417                 }
 418                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 419
 420                 if ( $permErrors ) {
 421                         wfDebug( __METHOD__.": User can't edit\n" );
 422                         $this->readOnlyPage( $this->getContent(), true, $permErrors, 'edit' );
 423                         wfProfileOut( __METHOD__ );
 424                         return;
 425                 } else {
 426                         if ( $this->save ) {
 427                                 $this->formtype = 'save';
 428                         } else if ( $this->preview ) {
 429                                 $this->formtype = 'preview';
 430                         } else if ( $this->diff ) {
 431                                 $this->formtype = 'diff';
 432                         } else { # First time through
 433                                 $this->firsttime = true;
 434                                 if( $this->previewOnOpen() ) {
 435                                         $this->formtype = 'preview';
 436                                 } else {
 437                                         $this->extractMetaDataFromArticle () ;
 438                                         $this->formtype = 'initial';
 439                                 }
 440                         }
 441                 }
 442
 443                 wfProfileIn( __METHOD__."-business-end" );
 444
 445                 $this->isConflict = false;
 446                 // css / js subpages of user pages get a special treatment
 447                 $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
 448                 $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 449
 450                 # Show applicable editing introductions
 451                 if( $this->formtype == 'initial' || $this->firsttime )
 452                         $this->showIntro();
 453
 454                 if( $this->mTitle->isTalkPage() ) {
 455                         $wgOut->addWikiMsg( 'talkpagetext' );
 456                 }
 457
 458                 # Attempt submission here.  This will check for edit conflicts,
 459                 # and redundantly check for locked database, blocked IPs, etc.
 460                 # that edit() already checked just in case someone tries to sneak
 461                 # in the back door with a hand-edited submission URL.
 462
 463                 if ( 'save' == $this->formtype ) {
 464                         if ( !$this->attemptSave() ) {
 465                                 wfProfileOut( __METHOD__."-business-end" );
 466                                 wfProfileOut( __METHOD__ );
 467                                 return;
 468                         }
 469                 }
 470
 471                 # First time through: get contents, set time for conflict
 472                 # checking, etc.
 473                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 474                         if ($this->initialiseForm() === false) {
 475                                 $this->noSuchSectionPage();
 476                                 wfProfileOut( __METHOD__."-business-end" );
 477                                 wfProfileOut( __METHOD__ );
 478                                 return;
 479                         }
 480                         if( !$this->mTitle->getArticleId() )
 481                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 482                 }
 483
 484                 $this->showEditForm();
 485                 wfProfileOut( __METHOD__."-business-end" );
 486                 wfProfileOut( __METHOD__ );
 487         }
 488
 489         /**
 490          * Show a read-only error
 491          * Parameters are the same as OutputPage:readOnlyPage()
 492          * Redirect to the article page if redlink=1
 493          */
 494         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 495                 global $wgRequest, $wgOut;
 496                 if ( $wgRequest->getBool( 'redlink' ) ) {
 497                         // The edit page was reached via a red link.
 498                         // Redirect to the article page and let them click the edit tab if
 499                         // they really want a permission error.
 500                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 501                 } else {
 502                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 503                 }
 504         }
 505
 506         /**
 507          * Should we show a preview when the edit form is first shown?
 508          *
 509          * @return bool
 510          */
 511         protected function previewOnOpen() {
 512                 global $wgRequest, $wgUser;
 513                 if( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 514                         // Explicit override from request
 515                         return true;
 516                 } elseif( $wgRequest->getVal( 'preview' ) == 'no' ) {
 517                         // Explicit override from request
 518                         return false;
 519                 } elseif( $this->section == 'new' ) {
 520                         // Nothing *to* preview for new sections
 521                         return false;
 522                 } elseif( ( $wgRequest->getVal( 'preload' ) !== '' || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 523                         // Standard preference behaviour
 524                         return true;
 525                 } elseif( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
 526                         // Categories are special
 527                         return true;
 528                 } else {
 529                         return false;
 530                 }
 531         }
 532
 533         /**
 534          * @todo document
 535          * @param $request
 536          */
 537         function importFormData( &$request ) {
 538                 global $wgLang, $wgUser;
 539                 $fname = 'EditPage::importFormData';
 540                 wfProfileIn( $fname );
 541
 542                 # Section edit can come from either the form or a link
 543                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 544
 545                 if( $request->wasPosted() ) {
 546                         # These fields need to be checked for encoding.
 547                         # Also remove trailing whitespace, but don't remove _initial_
 548                         # whitespace from the text boxes. This may be significant formatting.
 549                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 550                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 551                         $this->mMetaData = rtrim( $request->getText( 'metadata' ) );
 552                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 553                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
 554
 555                         # Remove extra headings from summaries and new sections.
 556                         $this->summary = preg_replace('/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary);
 557
 558                         $this->edittime = $request->getVal( 'wpEdittime' );
 559                         $this->starttime = $request->getVal( 'wpStarttime' );
 560
 561                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 562
 563                         if( is_null( $this->edittime ) ) {
 564                                 # If the form is incomplete, force to preview.
 565                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 566                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 567                                 $this->preview  = true;
 568                         } else {
 569                                 /* Fallback for live preview */
 570                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 571                                 $this->diff = $request->getCheck( 'wpDiff' );
 572
 573                                 // Remember whether a save was requested, so we can indicate
 574                                 // if we forced preview due to session failure.
 575                                 $this->mTriedSave = !$this->preview;
 576
 577                                 if ( $this->tokenOk( $request ) ) {
 578                                         # Some browsers will not report any submit button
 579                                         # if the user hits enter in the comment box.
 580                                         # The unmarked state will be assumed to be a save,
 581                                         # if the form seems otherwise complete.
 582                                         wfDebug( "$fname: Passed token check.\n" );
 583                                 } else if ( $this->diff ) {
 584                                         # Failed token check, but only requested "Show Changes".
 585                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 586                                 } else {
 587                                         # Page might be a hack attempt posted from
 588                                         # an external site. Preview instead of saving.
 589                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 590                                         $this->preview = true;
 591                                 }
 592                         }
 593                         $this->save = !$this->preview && !$this->diff;
 594                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 595                                 $this->edittime = null;
 596                         }
 597
 598                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 599                                 $this->starttime = null;
 600                         }
 601
 602                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 603
 604                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 605                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 606
 607                         # Don't force edit summaries when a user is editing their own user or talk page
 608                         if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
 609                                 $this->allowBlankSummary = true;
 610                         } else {
 611                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
 612                         }
 613
 614                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 615                 } else {
 616                         # Not a posted form? Start with nothing.
 617                         wfDebug( "$fname: Not a posted form.\n" );
 618                         $this->textbox1  = '';
 619                         $this->textbox2  = '';
 620                         $this->mMetaData = '';
 621                         $this->summary   = '';
 622                         $this->edittime  = '';
 623                         $this->starttime = wfTimestampNow();
 624                         $this->edit      = false;
 625                         $this->preview   = false;
 626                         $this->save      = false;
 627                         $this->diff      = false;
 628                         $this->minoredit = false;
 629                         $this->watchthis = false;
 630                         $this->recreate  = false;
 631
 632                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 633                                 $this->summary = $request->getVal( 'preloadtitle' );
 634                         }
 635                 }
 636
 637                 $this->oldid = $request->getInt( 'oldid' );
 638
 639                 $this->live = $request->getCheck( 'live' );
 640                 $this->editintro = $request->getText( 'editintro' );
 641
 642                 wfProfileOut( $fname );
 643         }
 644
 645         /**
 646          * Make sure the form isn't faking a user's credentials.
 647          *
 648          * @param $request WebRequest
 649          * @return bool
 650          * @private
 651          */
 652         function tokenOk( &$request ) {
 653                 global $wgUser;
 654                 $token = $request->getVal( 'wpEditToken' );
 655                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 656                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 657                 return $this->mTokenOk;
 658         }
 659
 660         /**
 661          * Show all applicable editing introductions
 662          */
 663         protected function showIntro() {
 664                 global $wgOut, $wgUser;
 665                 if( $this->suppressIntro )
 666                         return;
 667
 668                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exists
 669                 if( $this->mTitle->getNamespace() == NS_USER || $this->mTitle->getNamespace() == NS_USER_TALK ) {
 670                         $parts = explode( '/', $this->mTitle->getText(), 2 );
 671                         $username = $parts[0];
 672                         $id = User::idFromName( $username );
 673                         $ip = User::isIP( $username );
 674
 675                         if ( $id == 0 && !$ip ) {
 676                                 $wgOut->wrapWikiMsg( '<div class="mw-userpage-userdoesnotexist error">$1</div>',
 677                                         array( 'userpage-userdoesnotexist', $username ) );
 678                         }
 679                 }
 680
 681                 if( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 682                         if( $wgUser->isLoggedIn() ) {
 683                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletext">$1</div>', 'newarticletext' );
 684                         } else {
 685                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletextanon">$1</div>', 'newarticletextanon' );
 686                         }
 687                         $this->showDeletionLog( $wgOut );
 688                 }
 689         }
 690
 691         /**
 692          * Attempt to show a custom editing introduction, if supplied
 693          *
 694          * @return bool
 695          */
 696         protected function showCustomIntro() {
 697                 if( $this->editintro ) {
 698                         $title = Title::newFromText( $this->editintro );
 699                         if( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 700                                 global $wgOut;
 701                                 $revision = Revision::newFromTitle( $title );
 702                                 $wgOut->addWikiTextTitleTidy( $revision->getText(), $this->mTitle );
 703                                 return true;
 704                         } else {
 705                                 return false;
 706                         }
 707                 } else {
 708                         return false;
 709                 }
 710         }
 711
 712         /**
 713          * Attempt submission (no UI)
 714          * @return one of the constants describing the result
 715          */
 716         function internalAttemptSave( &$result, $bot = false ) {
 717                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut, $wgParser;
 718                 global $wgMaxArticleSize;
 719
 720                 $fname = 'EditPage::attemptSave';
 721                 wfProfileIn( $fname );
 722                 wfProfileIn( "$fname-checks" );
 723
 724                 if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 725                 {
 726                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
 727                         return self::AS_HOOK_ERROR;
 728                 }
 729
 730                 # Check image redirect
 731                 if ( $this->mTitle->getNamespace() == NS_IMAGE &&
 732                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 733                         !$wgUser->isAllowed( 'upload' ) ) {
 734                                 if( $wgUser->isAnon() ) {
 735                                         return self::AS_IMAGE_REDIRECT_ANON;
 736                                 } else {
 737                                         return self::AS_IMAGE_REDIRECT_LOGGED;
 738                                 }
 739                 }
 740
 741                 # Reintegrate metadata
 742                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 743                 $this->mMetaData = '' ;
 744
 745                 # Check for spam
 746                 $matches = array();
 747                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 748                         $result['spam'] = $matches[0];
 749                         $ip = wfGetIP();
 750                         $pdbk = $this->mTitle->getPrefixedDBkey();
 751                         $match = str_replace( "\n", '', $matches[0] );
 752                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
 753                         wfProfileOut( "$fname-checks" );
 754                         wfProfileOut( $fname );
 755                         return self::AS_SPAM_ERROR;
 756                 }
 757                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
 758                         # Error messages or other handling should be performed by the filter function
 759                         wfProfileOut( "$fname-checks" );
 760                         wfProfileOut( $fname );
 761                         return self::AS_FILTERING;
 762                 }
 763                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
 764                         # Error messages etc. could be handled within the hook...
 765                         wfProfileOut( "$fname-checks" );
 766                         wfProfileOut( $fname );
 767                         return self::AS_HOOK_ERROR;
 768                 } elseif( $this->hookError != '' ) {
 769                         # ...or the hook could be expecting us to produce an error
 770                         wfProfileOut( "$fname-checks" );
 771                         wfProfileOut( $fname );
 772                         return self::AS_HOOK_ERROR_EXPECTED;
 773                 }
 774                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 775                         # Check block state against master, thus 'false'.
 776                         wfProfileOut( "$fname-checks" );
 777                         wfProfileOut( $fname );
 778                         return self::AS_BLOCKED_PAGE_FOR_USER;
 779                 }
 780                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 781                 if ( $this->kblength > $wgMaxArticleSize ) {
 782                         // Error will be displayed by showEditForm()
 783                         $this->tooBig = true;
 784                         wfProfileOut( "$fname-checks" );
 785                         wfProfileOut( $fname );
 786                         return self::AS_CONTENT_TOO_BIG;
 787                 }
 788
 789                 if ( !$wgUser->isAllowed('edit') ) {
 790                         if ( $wgUser->isAnon() ) {
 791                                 wfProfileOut( "$fname-checks" );
 792                                 wfProfileOut( $fname );
 793                                 return self::AS_READ_ONLY_PAGE_ANON;
 794                         }
 795                         else {
 796                                 wfProfileOut( "$fname-checks" );
 797                                 wfProfileOut( $fname );
 798                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 799                         }
 800                 }
 801
 802                 if ( wfReadOnly() ) {
 803                         wfProfileOut( "$fname-checks" );
 804                         wfProfileOut( $fname );
 805                         return self::AS_READ_ONLY_PAGE;
 806                 }
 807                 if ( $wgUser->pingLimiter() ) {
 808                         wfProfileOut( "$fname-checks" );
 809                         wfProfileOut( $fname );
 810                         return self::AS_RATE_LIMITED;
 811                 }
 812
 813                 # If the article has been deleted while editing, don't save it without
 814                 # confirmation
 815                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
 816                         wfProfileOut( "$fname-checks" );
 817                         wfProfileOut( $fname );
 818                         return self::AS_ARTICLE_WAS_DELETED;
 819                 }
 820
 821                 wfProfileOut( "$fname-checks" );
 822
 823                 # If article is new, insert it.
 824                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 825                 if ( 0 == $aid ) {
 826
 827                         // Late check for create permission, just in case *PARANOIA*
 828                         if ( !$this->mTitle->userCan( 'create' ) ) {
 829                                 wfDebug( "$fname: no create permission\n" );
 830                                 wfProfileOut( $fname );
 831                                 return self::AS_NO_CREATE_PERMISSION;
 832                         }
 833
 834                         # Don't save a new article if it's blank.
 835                         if ( '' == $this->textbox1 ) {
 836                                         wfProfileOut( $fname );
 837                                         return self::AS_BLANK_ARTICLE;
 838                         }
 839
 840                         // Run post-section-merge edit filter
 841                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
 842                                 # Error messages etc. could be handled within the hook...
 843                                 wfProfileOut( $fname );
 844                                 return self::AS_HOOK_ERROR;
 845                         }
 846
 847                         $isComment = ( $this->section == 'new' );
 848
 849                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 850                                 $this->minoredit, $this->watchthis, false, $isComment, $bot);
 851
 852                         wfProfileOut( $fname );
 853                         return self::AS_SUCCESS_NEW_ARTICLE;
 854                 }
 855
 856                 # Article exists. Check for edit conflict.
 857
 858                 $this->mArticle->clear(); # Force reload of dates, etc.
 859                 $this->mArticle->forUpdate( true ); # Lock the article
 860
 861                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 862
 863                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 864                         $this->isConflict = true;
 865                         if( $this->section == 'new' ) {
 866                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 867                                         $this->mArticle->getComment() == $this->summary ) {
 868                                         // Probably a duplicate submission of a new comment.
 869                                         // This can happen when squid resends a request after
 870                                         // a timeout but the first one actually went through.
 871                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 872                                 } else {
 873                                         // New comment; suppress conflict.
 874                                         $this->isConflict = false;
 875                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 876                                 }
 877                         }
 878                 }
 879                 $userid = $wgUser->getId();
 880
 881                 if ( $this->isConflict) {
 882                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 883                                 $this->mArticle->getTimestamp() . "')\n" );
 884                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 885                 }
 886                 else {
 887                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 888                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 889                 }
 890                 if( is_null( $text ) ) {
 891                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 892                         $this->isConflict = true;
 893                         $text = $this->textbox1;
 894                 }
 895
 896                 # Suppress edit conflict with self, except for section edits where merging is required.
 897                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 898                         wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
 899                         $this->isConflict = false;
 900                 } else {
 901                         # switch from section editing to normal editing in edit conflict
 902                         if($this->isConflict) {
 903                                 # Attempt merge
 904                                 if( $this->mergeChangesInto( $text ) ){
 905                                         // Successful merge! Maybe we should tell the user the good news?
 906                                         $this->isConflict = false;
 907                                         wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
 908                                 } else {
 909                                         $this->section = '';
 910                                         $this->textbox1 = $text;
 911                                         wfDebug( "EditPage::editForm Keeping edit conflict, failed merge.\n" );
 912                                 }
 913                         }
 914                 }
 915
 916                 if ( $this->isConflict ) {
 917                         wfProfileOut( $fname );
 918                         return self::AS_CONFLICT_DETECTED;
 919                 }
 920
 921                 $oldtext = $this->mArticle->getContent();
 922
 923                 // Run post-section-merge edit filter
 924                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
 925                         # Error messages etc. could be handled within the hook...
 926                         wfProfileOut( $fname );
 927                         return self::AS_HOOK_ERROR;
 928                 }
 929
 930                 # Handle the user preference to force summaries here, but not for null edits
 931                 if( $this->section != 'new' && !$this->allowBlankSummary &&  $wgUser->getOption( 'forceeditsummary') &&
 932                         0 != strcmp($oldtext, $text) &&
 933                         !is_object( Title::newFromRedirect( $text ) ) # check if it's not a redirect
 934                 ) {
 935
 936                         if( md5( $this->summary ) == $this->autoSumm ) {
 937                                 $this->missingSummary = true;
 938                                 wfProfileOut( $fname );
 939                                 return self::AS_SUMMARY_NEEDED;
 940                         }
 941                 }
 942
 943                 # And a similar thing for new sections
 944                 if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 945                         if (trim($this->summary) == '') {
 946                                 $this->missingSummary = true;
 947                                 wfProfileOut( $fname );
 948                                 return self::AS_SUMMARY_NEEDED;
 949                         }
 950                 }
 951
 952                 # All's well
 953                 wfProfileIn( "$fname-sectionanchor" );
 954                 $sectionanchor = '';
 955                 if( $this->section == 'new' ) {
 956                         if ( $this->textbox1 == '' ) {
 957                                 $this->missingComment = true;
 958                                 return self::AS_TEXTBOX_EMPTY;
 959                         }
 960                         if( $this->summary != '' ) {
 961                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
 962                                 # This is a new section, so create a link to the new section
 963                                 # in the revision summary.
 964                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
 965                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
 966                         }
 967                 } elseif( $this->section != '' ) {
 968                         # Try to get a section anchor from the section source, redirect to edited section if header found
 969                         # XXX: might be better to integrate this into Article::replaceSection
 970                         # for duplicate heading checking and maybe parsing
 971                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 972                         # we can't deal with anchors, includes, html etc in the header for now,
 973                         # headline would need to be parsed to improve this
 974                         if($hasmatch and strlen($matches[2]) > 0) {
 975                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
 976                         }
 977                 }
 978                 wfProfileOut( "$fname-sectionanchor" );
 979
 980                 // Save errors may fall down to the edit form, but we've now
 981                 // merged the section into full text. Clear the section field
 982                 // so that later submission of conflict forms won't try to
 983                 // replace that into a duplicated mess.
 984                 $this->textbox1 = $text;
 985                 $this->section = '';
 986
 987                 // Check for length errors again now that the section is merged in
 988                 $this->kblength = (int)(strlen( $text ) / 1024);
 989                 if ( $this->kblength > $wgMaxArticleSize ) {
 990                         $this->tooBig = true;
 991                         wfProfileOut( $fname );
 992                         return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
 993                 }
 994
 995                 # update the article here
 996                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 997                         $this->watchthis, $bot, $sectionanchor ) ) {
 998                         wfProfileOut( $fname );
 999                         return self::AS_SUCCESS_UPDATE;
1000                 } else {
1001                         $this->isConflict = true;
1002                 }
1003                 wfProfileOut( $fname );
1004                 return self::AS_END;
1005         }
1006
1007         /**
1008          * Initialise form fields in the object
1009          * Called on the first invocation, e.g. when a user clicks an edit link
1010          */
1011         function initialiseForm() {
1012                 $this->edittime = $this->mArticle->getTimestamp();
1013                 $this->textbox1 = $this->getContent(false);
1014                 if ($this->textbox1 === false) return false;
1015
1016                 if ( !$this->mArticle->exists() && $this->mTitle->getNamespace() == NS_MEDIAWIKI )
1017                         $this->textbox1 = wfMsgWeirdKey( $this->mTitle->getText() );
1018                 wfProxyCheck();
1019                 return true;
1020         }
1021
1022         /**
1023          * Send the edit form and related headers to $wgOut
1024          * @param $formCallback Optional callable that takes an OutputPage
1025          *                      parameter; will be called during form output
1026          *                      near the top, for captchas and the like.
1027          */
1028         function showEditForm( $formCallback=null ) {
1029                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle;
1030
1031                 # If $wgTitle is null, that means we're in API mode.
1032                 # Some hook probably called this function  without checking
1033                 # for is_null($wgTitle) first. Bail out right here so we don't
1034                 # do lots of work just to discard it right after.
1035                 if(is_null($wgTitle))
1036                         return;
1037
1038                 $fname = 'EditPage::showEditForm';
1039                 wfProfileIn( $fname );
1040
1041                 $sk = $wgUser->getSkin();
1042
1043                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
1044
1045                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1046
1047                 # Enabled article-related sidebar, toplinks, etc.
1048                 $wgOut->setArticleRelated( true );
1049
1050                 if ( $this->formtype == 'preview' ) {
1051                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
1052                 }
1053
1054                 if ( $this->isConflict ) {
1055                         $s = wfMsg( 'editconflict', $wgTitle->getPrefixedText() );
1056                         $wgOut->setPageTitle( $s );
1057                         $wgOut->addWikiMsg( 'explainconflict' );
1058
1059                         $this->textbox2 = $this->textbox1;
1060                         $this->textbox1 = $this->getContent();
1061                         $this->edittime = $this->mArticle->getTimestamp();
1062                 } else {
1063                         if( $this->section != '' ) {
1064                                 if( $this->section == 'new' ) {
1065                                         $s = wfMsg('editingcomment', $wgTitle->getPrefixedText() );
1066                                 } else {
1067                                         $s = wfMsg('editingsection', $wgTitle->getPrefixedText() );
1068                                         $matches = array();
1069                                         if( !$this->summary && !$this->preview && !$this->diff ) {
1070                                                 preg_match( "/^(=+)(.+)\\1/mi",
1071                                                         $this->textbox1,
1072                                                         $matches );
1073                                                 if( !empty( $matches[2] ) ) {
1074                                                         global $wgParser;
1075                                                         $this->summary = "/* " .
1076                                                                 $wgParser->stripSectionName(trim($matches[2])) .
1077                                                                 " */ ";
1078                                                 }
1079                                         }
1080                                 }
1081                         } else {
1082                                 $s = wfMsg( 'editing', $wgTitle->getPrefixedText() );
1083                         }
1084                         $wgOut->setPageTitle( $s );
1085
1086                         if ( $this->missingComment ) {
1087                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommenttext">$1</div>',  'missingcommenttext' );
1088                         }
1089
1090                         if( $this->missingSummary && $this->section != 'new' ) {
1091                                 $wgOut->wrapWikiMsg( '<div id="mw-missingsummary">$1</div>', 'missingsummary' );
1092                         }
1093
1094                         if( $this->missingSummary && $this->section == 'new' ) {
1095                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommentheader">$1</div>', 'missingcommentheader' );
1096                         }
1097
1098                         if( $this->hookError !== '' ) {
1099                                 $wgOut->addWikiText( $this->hookError );
1100                         }
1101
1102                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1103                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1104                         }
1105                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1106                         // Let sysop know that this will make private content public if saved
1107
1108                                 if( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1109                                         $wgOut->addWikiMsg( 'rev-deleted-text-permission' );
1110                                 } else if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1111                                         $wgOut->addWikiMsg( 'rev-deleted-text-view' );
1112                                 }
1113
1114                                 if( !$this->mArticle->mRevision->isCurrent() ) {
1115                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1116                                         $wgOut->addWikiMsg( 'editingold' );
1117                                 }
1118                         }
1119                 }
1120
1121                 if( wfReadOnly() ) {
1122                         $wgOut->addHTML( '<div id="mw-read-only-warning">'.wfMsgWikiHTML( 'readonlywarning' ).'</div>' );
1123                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
1124                         $wgOut->addHTML( '<div id="mw-anon-edit-warning">'.wfMsgWikiHTML( 'anoneditwarning' ).'</div>' );
1125                 } else {
1126                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
1127                                 # Check the skin exists
1128                                 if( $this->isValidCssJsSubpage ) {
1129                                         $wgOut->addWikiMsg( 'usercssjsyoucanpreview' );
1130                                 } else {
1131                                         $wgOut->addWikiMsg( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() );
1132                                 }
1133                         }
1134                 }
1135
1136                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1137                         # Show a warning if editing an interface message
1138                         $wgOut->addWikiMsg( 'editinginterface' );
1139                 } elseif( $this->mTitle->isProtected( 'edit' ) ) {
1140                         # Is the title semi-protected?
1141                         if( $this->mTitle->isSemiProtected() ) {
1142                                 $noticeMsg = 'semiprotectedpagewarning';
1143                         } else {
1144                                 # Then it must be protected based on static groups (regular)
1145                                 $noticeMsg = 'protectedpagewarning';
1146                         }
1147                         $wgOut->addHTML( "<div id='mw-edit-$noticeMsg'>\n" );
1148                         $wgOut->addWikiMsg( $noticeMsg );
1149                         $wgOut->addHTML( "</div>\n" );
1150                 }
1151                 if ( $this->mTitle->isCascadeProtected() ) {
1152                         # Is this page under cascading protection from some source pages?
1153                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1154                         $notice = "$1\n";
1155                         if ( count($cascadeSources) > 0 ) {
1156                                 # Explain, and list the titles responsible
1157                                 foreach( $cascadeSources as $page ) {
1158                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1159                                 }
1160                         }
1161                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', count($cascadeSources) ) );
1162                 }
1163                 if( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) != array() ){
1164                         $wgOut->addWikiMsg( 'titleprotectedwarning' );
1165                 }
1166
1167                 if ( $this->kblength === false ) {
1168                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1169                 }
1170                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1171                         $wgOut->addHTML( "<div id='mw-edit-longpageerror'>\n" );
1172                         $wgOut->addWikiMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) );
1173                         $wgOut->addHTML( "</div>\n" );
1174                 } elseif( $this->kblength > 29 ) {
1175                         $wgOut->addHTML( "<div id='mw-edit-longpagewarning'>\n" );
1176                         $wgOut->addWikiMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) );
1177                         $wgOut->addHTML( "</div>\n" );
1178                 }
1179
1180                 #need to parse the preview early so that we know which templates are used,
1181                 #otherwise users with "show preview after edit box" will get a blank list
1182                 if ( $this->formtype == 'preview' ) {
1183                         $previewOutput = $this->getPreviewText();
1184                 }
1185
1186                 $rows = $wgUser->getIntOption( 'rows' );
1187                 $cols = $wgUser->getIntOption( 'cols' );
1188
1189                 $ew = $wgUser->getOption( 'editwidth' );
1190                 if ( $ew ) $ew = " style=\"width:100%\"";
1191                 else $ew = '';
1192
1193                 $q = 'action=submit';
1194                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
1195                 $action = $wgTitle->escapeLocalURL( $q );
1196
1197                 $summary = wfMsg('summary');
1198                 $subject = wfMsg('subject');
1199
1200                 $cancel = $sk->makeKnownLink( $wgTitle->getPrefixedText(),
1201                                 wfMsgExt('cancel', array('parseinline')) );
1202                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1203                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1204                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1205                         htmlspecialchars( wfMsg( 'newwindow' ) );
1206
1207                 global $wgRightsText;
1208                 if ( $wgRightsText ) {
1209                         $copywarnMsg = array( 'copyrightwarning',
1210                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1211                                 $wgRightsText );
1212                 } else {
1213                         $copywarnMsg = array( 'copyrightwarning2',
1214                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
1215                 }
1216
1217                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1218                         # prepare toolbar for edit buttons
1219                         $toolbar = EditPage::getEditToolbar();
1220                 } else {
1221                         $toolbar = '';
1222                 }
1223
1224                 // activate checkboxes if user wants them to be always active
1225                 if( !$this->preview && !$this->diff ) {
1226                         # Sort out the "watch" checkbox
1227                         if( $wgUser->getOption( 'watchdefault' ) ) {
1228                                 # Watch all edits
1229                                 $this->watchthis = true;
1230                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1231                                 # Watch creations
1232                                 $this->watchthis = true;
1233                         } elseif( $this->mTitle->userIsWatching() ) {
1234                                 # Already watched
1235                                 $this->watchthis = true;
1236                         }
1237
1238                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1239                 }
1240
1241                 $wgOut->addHTML( $this->editFormPageTop );
1242
1243                 if ( $wgUser->getOption( 'previewontop' ) ) {
1244
1245                         if ( 'preview' == $this->formtype ) {
1246                                 $this->showPreview( $previewOutput );
1247                         } else {
1248                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1249                         }
1250
1251                         if ( 'diff' == $this->formtype ) {
1252                                 $this->showDiff();
1253                         }
1254                 }
1255
1256
1257                 $wgOut->addHTML( $this->editFormTextTop );
1258
1259                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1260                 # Otherwise, show a summary field at the bottom
1261                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
1262
1263                 # If a blank edit summary was previously provided, and the appropriate
1264                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1265                 # user being bounced back more than once in the event that a summary
1266                 # is not required.
1267                 #####
1268                 # For a bit more sophisticated detection of blank summaries, hash the
1269                 # automatic one and pass that in the hidden field wpAutoSummary.
1270                 $summaryhiddens =  '';
1271                 if( $this->missingSummary ) $summaryhiddens .= Xml::hidden( 'wpIgnoreBlankSummary', true );
1272                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1273                 $summaryhiddens .= Xml::hidden( 'wpAutoSummary', $autosumm );
1274                 if( $this->section == 'new' ) {
1275                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' />{$summaryhiddens}<br />";
1276                         $editsummary = "<div class='editOptions'>\n";
1277                         global $wgParser;
1278                         $formattedSummary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $this->summary ) );
1279                         $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $formattedSummary, $this->mTitle, true )."</div>\n" : '';
1280                         $summarypreview = '';
1281                 } else {
1282                         $commentsubject = '';
1283                         $editsummary="<div class='editOptions'>\n<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' />{$summaryhiddens}<br />";
1284                         $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
1285                         $subjectpreview = '';
1286                 }
1287
1288                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1289                 if( !$this->preview && !$this->diff ) {
1290                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1291                 }
1292                 $templates = ($this->preview || $this->section != '') ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
1293                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1294
1295                 $hiddencats = $this->mArticle->getHiddenCategories();
1296                 $formattedhiddencats = $sk->formatHiddenCategories( $hiddencats );
1297
1298                 global $wgUseMetadataEdit ;
1299                 if ( $wgUseMetadataEdit ) {
1300                         $metadata = $this->mMetaData ;
1301                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1302                         $top = wfMsgWikiHtml( 'metadata_help' );
1303                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1304                 }
1305                 else $metadata = "" ;
1306
1307                 $hidden = '';
1308                 $recreate = '';
1309                 if ($this->wasDeletedSinceLastEdit()) {
1310                         if ( 'save' != $this->formtype ) {
1311                                 $wgOut->addWikiMsg('deletedwhileediting');
1312                         } else {
1313                                 // Hide the toolbar and edit area, use can click preview to get it back
1314                                 // Add an confirmation checkbox and explanation.
1315                                 $toolbar = '';
1316                                 $hidden = 'type="hidden" style="display:none;"';
1317                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
1318                                 $recreate .=
1319                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
1320                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
1321                         }
1322                 }
1323
1324                 $tabindex = 2;
1325
1326                 $checkboxes = self::getCheckboxes( $tabindex, $sk,
1327                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1328
1329                 $checkboxhtml = implode( $checkboxes, "\n" );
1330
1331                 $buttons = $this->getEditButtons( $tabindex );
1332                 $buttonshtml = implode( $buttons, "\n" );
1333
1334                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1335                         ? '' : Xml::hidden( 'safemode', '1' );
1336
1337                 $wgOut->addHTML( <<<END
1338 {$toolbar}
1339 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1340 END
1341 );
1342
1343                 if( is_callable( $formCallback ) ) {
1344                         call_user_func_array( $formCallback, array( &$wgOut ) );
1345                 }
1346
1347                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1348
1349                 // Put these up at the top to ensure they aren't lost on early form submission
1350                 $wgOut->addHTML( "
1351 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1352 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1353 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1354 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1355
1356                 $encodedtext = htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) );
1357                 if( $encodedtext !== '' ) {
1358                         // Ensure there's a newline at the end, otherwise adding lines
1359                         // is awkward.
1360                         // But don't add a newline if the ext is empty, or Firefox in XHTML
1361                         // mode will show an extra newline. A bit annoying.
1362                         $encodedtext .= "\n";
1363                 }
1364
1365                 $wgOut->addHTML( <<<END
1366 $recreate
1367 {$commentsubject}
1368 {$subjectpreview}
1369 {$this->editFormTextBeforeContent}
1370 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1371 cols='{$cols}'{$ew} $hidden>{$encodedtext}</textarea>
1372 END
1373 );
1374
1375                 $wgOut->wrapWikiMsg( "<div id=\"editpage-copywarn\">\n$1\n</div>", $copywarnMsg );
1376                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1377                 $wgOut->addHTML( "
1378 {$metadata}
1379 {$editsummary}
1380 {$summarypreview}
1381 {$checkboxhtml}
1382 {$safemodehtml}
1383 ");
1384
1385                 $wgOut->addHTML(
1386 "<div class='editButtons'>
1387 {$buttonshtml}
1388         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1389 </div><!-- editButtons -->
1390 </div><!-- editOptions -->");
1391
1392                 /**
1393                  * To make it harder for someone to slip a user a page
1394                  * which submits an edit form to the wiki without their
1395                  * knowledge, a random token is associated with the login
1396                  * session. If it's not passed back with the submission,
1397                  * we won't save the page, or render user JavaScript and
1398                  * CSS previews.
1399                  *
1400                  * For anon editors, who may not have a session, we just
1401                  * include the constant suffix to prevent editing from
1402                  * broken text-mangling proxies.
1403                  */
1404                 $token = htmlspecialchars( $wgUser->editToken() );
1405                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1406
1407                 $wgOut->addHtml( '<div class="mw-editTools">' );
1408                 $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
1409                 $wgOut->addHtml( '</div>' );
1410
1411                 $wgOut->addHTML( $this->editFormTextAfterTools );
1412
1413                 $wgOut->addHTML( "
1414 <div class='templatesUsed'>
1415 {$formattedtemplates}
1416 </div>
1417 <div class='hiddencats'>
1418 {$formattedhiddencats}
1419 </div>
1420 ");
1421
1422                 if ( $this->isConflict && wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
1423                         $wgOut->wrapWikiMsg( '==$1==', "yourdiff" );
1424
1425                         $de = new DifferenceEngine( $this->mTitle );
1426                         $de->setText( $this->textbox2, $this->textbox1 );
1427                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1428
1429                         $wgOut->wrapWikiMsg( '==$1==', "yourtext" );
1430                         $wgOut->addHTML( "<textarea tabindex='6' id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}'>"
1431                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1432                 }
1433                 $wgOut->addHTML( $this->editFormTextBottom );
1434                 $wgOut->addHTML( "</form>\n" );
1435                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1436
1437                         if ( $this->formtype == 'preview') {
1438                                 $this->showPreview( $previewOutput );
1439                         } else {
1440                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1441                         }
1442
1443                         if ( $this->formtype == 'diff') {
1444                                 $this->showDiff();
1445                         }
1446
1447                 }
1448
1449                 wfProfileOut( $fname );
1450         }
1451
1452         /**
1453          * Append preview output to $wgOut.
1454          * Includes category rendering if this is a category page.
1455          *
1456          * @param string $text The HTML to be output for the preview.
1457          */
1458         protected function showPreview( $text ) {
1459                 global $wgOut;
1460
1461                 $wgOut->addHTML( '<div id="wikiPreview">' );
1462                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1463                         $this->mArticle->openShowCategory();
1464                 }
1465                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1466                 $wgOut->addHTML( $text );
1467                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1468                         $this->mArticle->closeShowCategory();
1469                 }
1470                 $wgOut->addHTML( '</div>' );
1471         }
1472
1473         /**
1474          * Live Preview lets us fetch rendered preview page content and
1475          * add it to the page without refreshing the whole page.
1476          * If not supported by the browser it will fall through to the normal form
1477          * submission method.
1478          *
1479          * This function outputs a script tag to support live preview, and
1480          * returns an onclick handler which should be added to the attributes
1481          * of the preview button
1482          */
1483         function doLivePreviewScript() {
1484                 global $wgOut, $wgTitle;
1485                 $wgOut->addScriptFile( 'preview.js' );
1486                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1487                 return "return !lpDoPreview(" .
1488                         "editform.wpTextbox1.value," .
1489                         '"' . $liveAction . '"' . ")";
1490         }
1491
1492         function getLastDelete() {
1493                 $dbr = wfGetDB( DB_SLAVE );
1494                 $fname = 'EditPage::getLastDelete';
1495                 $res = $dbr->select(
1496                         array( 'logging', 'user' ),
1497                         array( 'log_type',
1498                                'log_action',
1499                                'log_timestamp',
1500                                'log_user',
1501                                'log_namespace',
1502                                'log_title',
1503                                'log_comment',
1504                                'log_params',
1505                                'user_name', ),
1506                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1507                                'log_title' => $this->mTitle->getDBkey(),
1508                                'log_type' => 'delete',
1509                                'log_action' => 'delete',
1510                                'user_id=log_user' ),
1511                         $fname,
1512                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1513
1514                 if($dbr->numRows($res) == 1) {
1515                         while ( $x = $dbr->fetchObject ( $res ) )
1516                                 $data = $x;
1517                         $dbr->freeResult ( $res ) ;
1518                 } else {
1519                         $data = null;
1520                 }
1521                 return $data;
1522         }
1523
1524         /**
1525          * @todo document
1526          */
1527         function getPreviewText() {
1528                 global $wgOut, $wgUser, $wgTitle, $wgParser, $wgLang, $wgContLang;
1529
1530                 $fname = 'EditPage::getPreviewText';
1531                 wfProfileIn( $fname );
1532
1533                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1534                         if ( $this->mTokenOkExceptSuffix ) {
1535                                 $note = wfMsg( 'token_suffix_mismatch' );
1536                         } else {
1537                                 $note = wfMsg( 'session_fail_preview' );
1538                         }
1539                 } else {
1540                         $note = wfMsg( 'previewnote' );
1541                 }
1542
1543                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1544                 $parserOptions->setEditSection( false );
1545
1546                 global $wgRawHtml;
1547                 if( $wgRawHtml && !$this->mTokenOk ) {
1548                         // Could be an offsite preview attempt. This is very unsafe if
1549                         // HTML is enabled, as it could be an attack.
1550                         return $wgOut->parse( "<div class='previewnote'>" .
1551                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1552                 }
1553
1554                 # don't parse user css/js, show message about preview
1555                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1556
1557                 if ( $this->isCssJsSubpage ) {
1558                         if(preg_match("/\\.css$/", $this->mTitle->getText() ) ) {
1559                                 $previewtext = wfMsg('usercsspreview');
1560                         } else if(preg_match("/\\.js$/", $this->mTitle->getText() ) ) {
1561                                 $previewtext = wfMsg('userjspreview');
1562                         }
1563                         $parserOptions->setTidy(true);
1564                         $parserOutput = $wgParser->parse( $previewtext , $this->mTitle, $parserOptions );
1565                         $wgOut->addHTML( $parserOutput->mText );
1566                         $previewHTML = '';
1567                 } else {
1568                         $toparse = $this->textbox1;
1569
1570                         # If we're adding a comment, we need to show the
1571                         # summary as the headline
1572                         if($this->section=="new" && $this->summary!="") {
1573                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1574                         }
1575
1576                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData;
1577
1578                         // Parse mediawiki messages with correct target language
1579                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1580                                 $pos = strrpos( $this->mTitle->getText(), '/' );
1581                                 if ( $pos !== false ) {
1582                                         $code = substr( $this->mTitle->getText(), $pos+1 );
1583                                         switch ($code) {
1584                                                 case $wgLang->getCode():
1585                                                         $obj = $wgLang; break;
1586                                                 case $wgContLang->getCode():
1587                                                         $obj = $wgContLang; break;
1588                                                 default:
1589                                                         $obj = Language::factory( $code );
1590                                         }
1591                                         $parserOptions->setTargetLanguage( $obj );
1592                                 }
1593                         }
1594
1595
1596                         $parserOptions->setTidy(true);
1597                         $parserOptions->enableLimitReport();
1598                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ),
1599                                         $this->mTitle, $parserOptions );
1600
1601                         $previewHTML = $parserOutput->getText();
1602                         $wgOut->addParserOutputNoText( $parserOutput );
1603
1604                         # ParserOutput might have altered the page title, so reset it
1605                         # Also, use the title defined by DISPLAYTITLE magic word when present
1606                         if( ( $dt = $parserOutput->getDisplayTitle() ) !== false ) {
1607                                 $wgOut->setPageTitle( wfMsg( 'editing', $dt ) );
1608                         } else {
1609                                 $wgOut->setPageTitle( wfMsg( 'editing', $wgTitle->getPrefixedText() ) );
1610                         }
1611
1612                         foreach ( $parserOutput->getTemplates() as $ns => $template)
1613                                 foreach ( array_keys( $template ) as $dbk)
1614                                         $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
1615
1616                         if ( count( $parserOutput->getWarnings() ) ) {
1617                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
1618                         }
1619                 }
1620
1621                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1622                         "<div class='previewnote'>" . $wgOut->parse( $note ) . "</div>\n";
1623                 if ( $this->isConflict ) {
1624                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1625                 }
1626
1627                 if( $wgUser->getOption( 'previewontop' ) ) {
1628                         // Spacer for the edit toolbar
1629                         $previewfoot = '<p><br /></p>';
1630                 } else {
1631                         $previewfoot = '';
1632                 }
1633
1634                 wfProfileOut( $fname );
1635                 return $previewhead . $previewHTML . $previewfoot;
1636         }
1637
1638         /**
1639          * Call the stock "user is blocked" page
1640          */
1641         function blockedPage() {
1642                 global $wgOut, $wgUser;
1643                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1644
1645                 # If the user made changes, preserve them when showing the markup
1646                 # (This happens when a user is blocked during edit, for instance)
1647                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1648                 if( $first ) {
1649                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1650                 } else {
1651                         $source = $this->textbox1;
1652                 }
1653
1654                 # Spit out the source or the user's modified version
1655                 if( $source !== false ) {
1656                         $rows = $wgUser->getOption( 'rows' );
1657                         $cols = $wgUser->getOption( 'cols' );
1658                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1659                         $wgOut->addHtml( '<hr />' );
1660                         $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
1661                         # Why we don't use Xml::element here?
1662                         # Is it because if $source is '', it returns <textarea />?
1663                         $wgOut->addHtml( Xml::openElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . Xml::closeElement( 'textarea' ) );
1664                 }
1665         }
1666
1667         /**
1668          * Produce the stock "please login to edit pages" page
1669          */
1670         function userNotLoggedInPage() {
1671                 global $wgUser, $wgOut, $wgTitle;
1672                 $skin = $wgUser->getSkin();
1673
1674                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1675                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $wgTitle->getPrefixedUrl() );
1676
1677                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1678                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1679                 $wgOut->setArticleRelated( false );
1680
1681                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1682                 $wgOut->returnToMain( false, $wgTitle );
1683         }
1684
1685         /**
1686          * Creates a basic error page which informs the user that
1687          * they have attempted to edit a nonexistant section.
1688          */
1689         function noSuchSectionPage() {
1690                 global $wgOut, $wgTitle;
1691
1692                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1693                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1694                 $wgOut->setArticleRelated( false );
1695
1696                 $wgOut->addWikiMsg( 'nosuchsectiontext', $this->section );
1697                 $wgOut->returnToMain( false, $wgTitle );
1698         }
1699
1700         /**
1701          * Produce the stock "your edit contains spam" page
1702          *
1703          * @param $match Text which triggered one or more filters
1704          */
1705         function spamPage( $match = false ) {
1706                 global $wgOut, $wgTitle;
1707
1708                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1709                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1710                 $wgOut->setArticleRelated( false );
1711
1712                 $wgOut->addHtml( '<div id="spamprotected">' );
1713                 $wgOut->addWikiMsg( 'spamprotectiontext' );
1714                 if ( $match )
1715                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
1716                 $wgOut->addHtml( '</div>' );
1717
1718                 $wgOut->returnToMain( false, $wgTitle );
1719         }
1720
1721         /**
1722          * @private
1723          * @todo document
1724          */
1725         function mergeChangesInto( &$editText ){
1726                 $fname = 'EditPage::mergeChangesInto';
1727                 wfProfileIn( $fname );
1728
1729                 $db = wfGetDB( DB_MASTER );
1730
1731                 // This is the revision the editor started from
1732                 $baseRevision = $this->getBaseRevision();
1733                 if( is_null( $baseRevision ) ) {
1734                         wfProfileOut( $fname );
1735                         return false;
1736                 }
1737                 $baseText = $baseRevision->getText();
1738
1739                 // The current state, we want to merge updates into it
1740                 $currentRevision =  Revision::loadFromTitle(
1741                         $db, $this->mTitle );
1742                 if( is_null( $currentRevision ) ) {
1743                         wfProfileOut( $fname );
1744                         return false;
1745                 }
1746                 $currentText = $currentRevision->getText();
1747
1748                 $result = '';
1749                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1750                         $editText = $result;
1751                         wfProfileOut( $fname );
1752                         return true;
1753                 } else {
1754                         wfProfileOut( $fname );
1755                         return false;
1756                 }
1757         }
1758
1759         /**
1760          * Check if the browser is on a blacklist of user-agents known to
1761          * mangle UTF-8 data on form submission. Returns true if Unicode
1762          * should make it through, false if it's known to be a problem.
1763          * @return bool
1764          * @private
1765          */
1766         function checkUnicodeCompliantBrowser() {
1767                 global $wgBrowserBlackList;
1768                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1769                         // No User-Agent header sent? Trust it by default...
1770                         return true;
1771                 }
1772                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1773                 foreach ( $wgBrowserBlackList as $browser ) {
1774                         if ( preg_match($browser, $currentbrowser) ) {
1775                                 return false;
1776                         }
1777                 }
1778                 return true;
1779         }
1780
1781         /**
1782          * @deprecated use $wgParser->stripSectionName()
1783          */
1784         function pseudoParseSectionAnchor( $text ) {
1785                 global $wgParser;
1786                 return $wgParser->stripSectionName( $text );
1787         }
1788
1789         /**
1790          * Format an anchor fragment as it would appear for a given section name
1791          * @param string $text
1792          * @return string
1793          * @private
1794          */
1795         function sectionAnchor( $text ) {
1796                 global $wgParser;
1797                 return $wgParser->guessSectionNameFromWikiText( $text );
1798         }
1799
1800         /**
1801          * Shows a bulletin board style toolbar for common editing functions.
1802          * It can be disabled in the user preferences.
1803          * The necessary JavaScript code can be found in skins/common/edit.js.
1804          *
1805          * @return string
1806          */
1807         static function getEditToolbar() {
1808                 global $wgStylePath, $wgContLang, $wgLang, $wgJsMimeType;
1809
1810                 /**
1811                  * toolarray an array of arrays which each include the filename of
1812                  * the button image (without path), the opening tag, the closing tag,
1813                  * and optionally a sample text that is inserted between the two when no
1814                  * selection is highlighted.
1815                  * The tip text is shown when the user moves the mouse over the button.
1816                  *
1817                  * Already here are accesskeys (key), which are not used yet until someone
1818                  * can figure out a way to make them work in IE. However, we should make
1819                  * sure these keys are not defined on the edit page.
1820                  */
1821                 $toolarray = array(
1822                         array(
1823                                 'image'  => $wgLang->getImageFile('button-bold'),
1824                                 'id'     => 'mw-editbutton-bold',
1825                                 'open'   => '\'\'\'',
1826                                 'close'  => '\'\'\'',
1827                                 'sample' => wfMsg('bold_sample'),
1828                                 'tip'    => wfMsg('bold_tip'),
1829                                 'key'    => 'B'
1830                         ),
1831                         array(
1832                                 'image'  => $wgLang->getImageFile('button-italic'),
1833                                 'id'     => 'mw-editbutton-italic',
1834                                 'open'   => '\'\'',
1835                                 'close'  => '\'\'',
1836                                 'sample' => wfMsg('italic_sample'),
1837                                 'tip'    => wfMsg('italic_tip'),
1838                                 'key'    => 'I'
1839                         ),
1840                         array(
1841                                 'image'  => $wgLang->getImageFile('button-link'),
1842                                 'id'     => 'mw-editbutton-link',
1843                                 'open'   => '[[',
1844                                 'close'  => ']]',
1845                                 'sample' => wfMsg('link_sample'),
1846                                 'tip'    => wfMsg('link_tip'),
1847                                 'key'    => 'L'
1848                         ),
1849                         array(
1850                                 'image'  => $wgLang->getImageFile('button-extlink'),
1851                                 'id'     => 'mw-editbutton-extlink',
1852                                 'open'   => '[',
1853                                 'close'  => ']',
1854                                 'sample' => wfMsg('extlink_sample'),
1855                                 'tip'    => wfMsg('extlink_tip'),
1856                                 'key'    => 'X'
1857                         ),
1858                         array(
1859                                 'image'  => $wgLang->getImageFile('button-headline'),
1860                                 'id'     => 'mw-editbutton-headline',
1861                                 'open'   => "\n== ",
1862                                 'close'  => " ==\n",
1863                                 'sample' => wfMsg('headline_sample'),
1864                                 'tip'    => wfMsg('headline_tip'),
1865                                 'key'    => 'H'
1866                         ),
1867                         array(
1868                                 'image'  => $wgLang->getImageFile('button-image'),
1869                                 'id'     => 'mw-editbutton-image',
1870                                 'open'   => '[['.$wgContLang->getNsText(NS_IMAGE).':',
1871                                 'close'  => ']]',
1872                                 'sample' => wfMsg('image_sample'),
1873                                 'tip'    => wfMsg('image_tip'),
1874                                 'key'    => 'D'
1875                         ),
1876                         array(
1877                                 'image'  => $wgLang->getImageFile('button-media'),
1878                                 'id'     => 'mw-editbutton-media',
1879                                 'open'   => '[['.$wgContLang->getNsText(NS_MEDIA).':',
1880                                 'close'  => ']]',
1881                                 'sample' => wfMsg('media_sample'),
1882                                 'tip'    => wfMsg('media_tip'),
1883                                 'key'    => 'M'
1884                         ),
1885                         array(
1886                                 'image'  => $wgLang->getImageFile('button-math'),
1887                                 'id'     => 'mw-editbutton-math',
1888                                 'open'   => "<math>",
1889                                 'close'  => "</math>",
1890                                 'sample' => wfMsg('math_sample'),
1891                                 'tip'    => wfMsg('math_tip'),
1892                                 'key'    => 'C'
1893                         ),
1894                         array(
1895                                 'image'  => $wgLang->getImageFile('button-nowiki'),
1896                                 'id'     => 'mw-editbutton-nowiki',
1897                                 'open'   => "<nowiki>",
1898                                 'close'  => "</nowiki>",
1899                                 'sample' => wfMsg('nowiki_sample'),
1900                                 'tip'    => wfMsg('nowiki_tip'),
1901                                 'key'    => 'N'
1902                         ),
1903                         array(
1904                                 'image'  => $wgLang->getImageFile('button-sig'),
1905                                 'id'     => 'mw-editbutton-signature',
1906                                 'open'   => '--~~~~',
1907                                 'close'  => '',
1908                                 'sample' => '',
1909                                 'tip'    => wfMsg('sig_tip'),
1910                                 'key'    => 'Y'
1911                         ),
1912                         array(
1913                                 'image'  => $wgLang->getImageFile('button-hr'),
1914                                 'id'     => 'mw-editbutton-hr',
1915                                 'open'   => "\n----\n",
1916                                 'close'  => '',
1917                                 'sample' => '',
1918                                 'tip'    => wfMsg('hr_tip'),
1919                                 'key'    => 'R'
1920                         )
1921                 );
1922                 $toolbar = "<div id='toolbar'>\n";
1923                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1924
1925                 foreach($toolarray as $tool) {
1926                         $params = array(
1927                                 $image = $wgStylePath.'/common/images/'.$tool['image'],
1928                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1929                                 // Older browsers show a "speedtip" type message only for ALT.
1930                                 // Ideally these should be different, realistically they
1931                                 // probably don't need to be.
1932                                 $tip = $tool['tip'],
1933                                 $open = $tool['open'],
1934                                 $close = $tool['close'],
1935                                 $sample = $tool['sample'],
1936                                 $cssId = $tool['id'],
1937                         );
1938
1939                         $paramList = implode( ',',
1940                                 array_map( array( 'Xml', 'encodeJsVar' ), $params ) );
1941                         $toolbar.="addButton($paramList);\n";
1942                 }
1943
1944                 $toolbar.="/*]]>*/\n</script>";
1945                 $toolbar.="\n</div>";
1946                 return $toolbar;
1947         }
1948
1949         /**
1950          * Returns an array of html code of the following checkboxes:
1951          * minor and watch
1952          *
1953          * @param $tabindex Current tabindex
1954          * @param $skin Skin object
1955          * @param $checked Array of checkbox => bool, where bool indicates the checked
1956          *                 status of the checkbox
1957          *
1958          * @return array
1959          */
1960         public static function getCheckboxes( &$tabindex, $skin, $checked ) {
1961                 global $wgUser;
1962
1963                 $checkboxes = array();
1964
1965                 $checkboxes['minor'] = '';
1966                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
1967                 if ( $wgUser->isAllowed('minoredit') ) {
1968                         $attribs = array(
1969                                 'tabindex'  => ++$tabindex,
1970                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
1971                                 'id'        => 'wpMinoredit',
1972                         );
1973                         $checkboxes['minor'] =
1974                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
1975                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltip('minoredit').">{$minorLabel}</label>";
1976                 }
1977
1978                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
1979                 $checkboxes['watch'] = '';
1980                 if ( $wgUser->isLoggedIn() ) {
1981                         $attribs = array(
1982                                 'tabindex'  => ++$tabindex,
1983                                 'accesskey' => wfMsg( 'accesskey-watch' ),
1984                                 'id'        => 'wpWatchthis',
1985                         );
1986                         $checkboxes['watch'] =
1987                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
1988                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltip('watch').">{$watchLabel}</label>";
1989                 }
1990                 return $checkboxes;
1991         }
1992
1993         /**
1994          * Returns an array of html code of the following buttons:
1995          * save, diff, preview and live
1996          *
1997          * @param $tabindex Current tabindex
1998          *
1999          * @return array
2000          */
2001         public function getEditButtons(&$tabindex) {
2002                 global $wgLivePreview, $wgUser;
2003
2004                 $buttons = array();
2005
2006                 $temp = array(
2007                         'id'        => 'wpSave',
2008                         'name'      => 'wpSave',
2009                         'type'      => 'submit',
2010                         'tabindex'  => ++$tabindex,
2011                         'value'     => wfMsg('savearticle'),
2012                         'accesskey' => wfMsg('accesskey-save'),
2013                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2014                 );
2015                 $buttons['save'] = Xml::element('input', $temp, '');
2016
2017                 ++$tabindex; // use the same for preview and live preview
2018                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
2019                         $temp = array(
2020                                 'id'        => 'wpPreview',
2021                                 'name'      => 'wpPreview',
2022                                 'type'      => 'submit',
2023                                 'tabindex'  => $tabindex,
2024                                 'value'     => wfMsg('showpreview'),
2025                                 'accesskey' => '',
2026                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2027                                 'style'     => 'display: none;',
2028                         );
2029                         $buttons['preview'] = Xml::element('input', $temp, '');
2030
2031                         $temp = array(
2032                                 'id'        => 'wpLivePreview',
2033                                 'name'      => 'wpLivePreview',
2034                                 'type'      => 'submit',
2035                                 'tabindex'  => $tabindex,
2036                                 'value'     => wfMsg('showlivepreview'),
2037                                 'accesskey' => wfMsg('accesskey-preview'),
2038                                 'title'     => '',
2039                                 'onclick'   => $this->doLivePreviewScript(),
2040                         );
2041                         $buttons['live'] = Xml::element('input', $temp, '');
2042                 } else {
2043                         $temp = array(
2044                                 'id'        => 'wpPreview',
2045                                 'name'      => 'wpPreview',
2046                                 'type'      => 'submit',
2047                                 'tabindex'  => $tabindex,
2048                                 'value'     => wfMsg('showpreview'),
2049                                 'accesskey' => wfMsg('accesskey-preview'),
2050                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2051                         );
2052                         $buttons['preview'] = Xml::element('input', $temp, '');
2053                         $buttons['live'] = '';
2054                 }
2055
2056                 $temp = array(
2057                         'id'        => 'wpDiff',
2058                         'name'      => 'wpDiff',
2059                         'type'      => 'submit',
2060                         'tabindex'  => ++$tabindex,
2061                         'value'     => wfMsg('showdiff'),
2062                         'accesskey' => wfMsg('accesskey-diff'),
2063                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
2064                 );
2065                 $buttons['diff'] = Xml::element('input', $temp, '');
2066
2067                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons ) );
2068                 return $buttons;
2069         }
2070
2071         /**
2072          * Output preview text only. This can be sucked into the edit page
2073          * via JavaScript, and saves the server time rendering the skin as
2074          * well as theoretically being more robust on the client (doesn't
2075          * disturb the edit box's undo history, won't eat your text on
2076          * failure, etc).
2077          *
2078          * @todo This doesn't include category or interlanguage links.
2079          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2080          *       or something...</s> that might also require more skin
2081          *       initialization, so check whether that's a problem.
2082          */
2083         function livePreview() {
2084                 global $wgOut;
2085                 $wgOut->disable();
2086                 header( 'Content-type: text/xml; charset=utf-8' );
2087                 header( 'Cache-control: no-cache' );
2088
2089                 $previewText = $this->getPreviewText();
2090                 #$categories = $skin->getCategoryLinks();
2091
2092                 $s =
2093                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2094                 Xml::tags( 'livepreview', null,
2095                         Xml::element( 'preview', null, $previewText )
2096                         #.      Xml::element( 'category', null, $categories )
2097                 );
2098                 echo $s;
2099         }
2100
2101
2102         /**
2103          * Get a diff between the current contents of the edit box and the
2104          * version of the page we're editing from.
2105          *
2106          * If this is a section edit, we'll replace the section as for final
2107          * save and then make a comparison.
2108          */
2109         function showDiff() {
2110                 $oldtext = $this->mArticle->fetchContent();
2111                 $newtext = $this->mArticle->replaceSection(
2112                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2113                 $newtext = $this->mArticle->preSaveTransform( $newtext );
2114                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
2115                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
2116                 if ( $oldtext !== false  || $newtext != '' ) {
2117                         $de = new DifferenceEngine( $this->mTitle );
2118                         $de->setText( $oldtext, $newtext );
2119                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2120                         $de->showDiffStyle();
2121                 } else {
2122                         $difftext = '';
2123                 }
2124
2125                 global $wgOut;
2126                 $wgOut->addHtml( '<div id="wikiDiff">' . $difftext . '</div>' );
2127         }
2128
2129         /**
2130          * Filter an input field through a Unicode de-armoring process if it
2131          * came from an old browser with known broken Unicode editing issues.
2132          *
2133          * @param WebRequest $request
2134          * @param string $field
2135          * @return string
2136          * @private
2137          */
2138         function safeUnicodeInput( $request, $field ) {
2139                 $text = rtrim( $request->getText( $field ) );
2140                 return $request->getBool( 'safemode' )
2141                         ? $this->unmakesafe( $text )
2142                         : $text;
2143         }
2144
2145         /**
2146          * Filter an output field through a Unicode armoring process if it is
2147          * going to an old browser with known broken Unicode editing issues.
2148          *
2149          * @param string $text
2150          * @return string
2151          * @private
2152          */
2153         function safeUnicodeOutput( $text ) {
2154                 global $wgContLang;
2155                 $codedText = $wgContLang->recodeForEdit( $text );
2156                 return $this->checkUnicodeCompliantBrowser()
2157                         ? $codedText
2158                         : $this->makesafe( $codedText );
2159         }
2160
2161         /**
2162          * A number of web browsers are known to corrupt non-ASCII characters
2163          * in a UTF-8 text editing environment. To protect against this,
2164          * detected browsers will be served an armored version of the text,
2165          * with non-ASCII chars converted to numeric HTML character references.
2166          *
2167          * Preexisting such character references will have a 0 added to them
2168          * to ensure that round-trips do not alter the original data.
2169          *
2170          * @param string $invalue
2171          * @return string
2172          * @private
2173          */
2174         function makesafe( $invalue ) {
2175                 // Armor existing references for reversability.
2176                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2177
2178                 $bytesleft = 0;
2179                 $result = "";
2180                 $working = 0;
2181                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2182                         $bytevalue = ord( $invalue{$i} );
2183                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
2184                                 $result .= chr( $bytevalue );
2185                                 $bytesleft = 0;
2186                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
2187                                 $working = $working << 6;
2188                                 $working += ($bytevalue & 0x3F);
2189                                 $bytesleft--;
2190                                 if( $bytesleft <= 0 ) {
2191                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2192                                 }
2193                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
2194                                 $working = $bytevalue & 0x1F;
2195                                 $bytesleft = 1;
2196                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
2197                                 $working = $bytevalue & 0x0F;
2198                                 $bytesleft = 2;
2199                         } else { //1111 0xxx
2200                                 $working = $bytevalue & 0x07;
2201                                 $bytesleft = 3;
2202                         }
2203                 }
2204                 return $result;
2205         }
2206
2207         /**
2208          * Reverse the previously applied transliteration of non-ASCII characters
2209          * back to UTF-8. Used to protect data from corruption by broken web browsers
2210          * as listed in $wgBrowserBlackList.
2211          *
2212          * @param string $invalue
2213          * @return string
2214          * @private
2215          */
2216         function unmakesafe( $invalue ) {
2217                 $result = "";
2218                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2219                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2220                                 $i += 3;
2221                                 $hexstring = "";
2222                                 do {
2223                                         $hexstring .= $invalue{$i};
2224                                         $i++;
2225                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2226
2227                                 // Do some sanity checks. These aren't needed for reversability,
2228                                 // but should help keep the breakage down if the editor
2229                                 // breaks one of the entities whilst editing.
2230                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
2231                                         $codepoint = hexdec($hexstring);
2232                                         $result .= codepointToUtf8( $codepoint );
2233                                 } else {
2234                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2235                                 }
2236                         } else {
2237                                 $result .= substr( $invalue, $i, 1 );
2238                         }
2239                 }
2240                 // reverse the transform that we made for reversability reasons.
2241                 return strtr( $result, array( "&#x0" => "&#x" ) );
2242         }
2243
2244         function noCreatePermission() {
2245                 global $wgOut;
2246                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2247                 $wgOut->addWikiMsg( 'nocreatetext' );
2248         }
2249
2250         /**
2251          * If there are rows in the deletion log for this page, show them,
2252          * along with a nice little note for the user
2253          *
2254          * @param OutputPage $out
2255          */
2256         protected function showDeletionLog( $out ) {
2257                 global $wgUser;
2258                 $loglist = new LogEventsList( $wgUser->getSkin(), $out );
2259                 $pager = new LogPager( $loglist, 'delete', false, $this->mTitle->getPrefixedText() );
2260                 if( $pager->getNumRows() > 0 ) {
2261                         $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
2262                         $out->addWikiMsg( 'recreate-deleted-warn' );
2263                         $out->addHTML(
2264                                 $loglist->beginLogEventsList() .
2265                                 $pager->getBody() .
2266                                 $loglist->endLogEventsList()
2267                         );
2268                         $out->addHtml( '</div>' );
2269                 }
2270         }
2271
2272         /**
2273          * Attempt submission
2274          * @return bool false if output is done, true if the rest of the form should be displayed
2275          */
2276         function attemptSave() {
2277                 global $wgUser, $wgOut, $wgTitle, $wgRequest;
2278
2279                 $resultDetails = false;
2280                 $value = $this->internalAttemptSave( $resultDetails, $wgUser->isAllowed('bot') && $wgRequest->getBool('bot', true) );
2281
2282                 if( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
2283                         $this->didSave = true;
2284                 }
2285
2286                 switch ($value) {
2287                         case self::AS_HOOK_ERROR_EXPECTED:
2288                         case self::AS_CONTENT_TOO_BIG:
2289                         case self::AS_ARTICLE_WAS_DELETED:
2290                         case self::AS_CONFLICT_DETECTED:
2291                         case self::AS_SUMMARY_NEEDED:
2292                         case self::AS_TEXTBOX_EMPTY:
2293                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
2294                         case self::AS_END:
2295                                 return true;
2296
2297                         case self::AS_HOOK_ERROR:
2298                         case self::AS_FILTERING:
2299                         case self::AS_SUCCESS_NEW_ARTICLE:
2300                         case self::AS_SUCCESS_UPDATE:
2301                                 return false;
2302
2303                         case self::AS_SPAM_ERROR:
2304                                 $this->spamPage ( $resultDetails['spam'] );
2305                                 return false;
2306
2307                         case self::AS_BLOCKED_PAGE_FOR_USER:
2308                                 $this->blockedPage();
2309                                 return false;
2310
2311                         case self::AS_IMAGE_REDIRECT_ANON:
2312                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
2313                                 return false;
2314
2315                         case self::AS_READ_ONLY_PAGE_ANON:
2316                                 $this->userNotLoggedInPage();
2317                                 return false;
2318
2319                         case self::AS_READ_ONLY_PAGE_LOGGED:
2320                         case self::AS_READ_ONLY_PAGE:
2321                                 $wgOut->readOnlyPage();
2322                                 return false;
2323
2324                         case self::AS_RATE_LIMITED:
2325                                 $wgOut->rateLimited();
2326                                 return false;
2327
2328                         case self::AS_NO_CREATE_PERMISSION;
2329                                 $this->noCreatePermission();
2330                                 return;
2331
2332                         case self::AS_BLANK_ARTICLE:
2333                                 $wgOut->redirect( $wgTitle->getFullURL() );
2334                                 return false;
2335
2336                         case self::AS_IMAGE_REDIRECT_LOGGED:
2337                                 $wgOut->permissionRequired( 'upload' );
2338                                 return false;
2339                 }
2340         }
2341
2342         function getBaseRevision() {
2343                 if ($this->mBaseRevision == false) {
2344                         $db = wfGetDB( DB_MASTER );
2345                         $baseRevision = Revision::loadFromTimestamp(
2346                                 $db, $this->mTitle, $this->edittime );
2347                         return $this->mBaseRevision = $baseRevision;
2348                 } else {
2349                         return $this->mBaseRevision;
2350                 }
2351         }
2352 }