includes/EditPage.php

   1 <?php
   2 /**
   3  * Contain the EditPage class
   4  * @package MediaWiki
   5  */
   6
   7 /**
   8  * Splitting edit page/HTML interface 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  * @package MediaWiki
  14  */
  15
  16 class EditPage {
  17         var $mArticle;
  18         var $mTitle;
  19         var $mMetaData = '';
  20         var $isConflict = false;
  21         var $isCssJsSubpage = false;
  22         var $deletedSinceEdit = false;
  23         var $formtype;
  24         var $firsttime;
  25         var $lastDelete;
  26         var $mTokenOk = true;
  27         var $tooBig = false;
  28         var $kblength = false;
  29         var $missingComment = false;
  30         var $missingSummary = false;
  31         var $allowBlankSummary = false;
  32         var $autoSumm = '';
  33
  34         # Form values
  35         var $save = false, $preview = false, $diff = false;
  36         var $minoredit = false, $watchthis = false, $recreate = false;
  37         var $textbox1 = '', $textbox2 = '', $summary = '';
  38         var $edittime = '', $section = '', $starttime = '';
  39         var $oldid = 0, $editintro = '', $scrolltop = null;
  40
  41         /**
  42          * @todo document
  43          * @param $article
  44          */
  45         function EditPage( $article ) {
  46                 $this->mArticle =& $article;
  47                 global $wgTitle;
  48                 $this->mTitle =& $wgTitle;
  49         }
  50
  51         /**
  52          * This is the function that extracts metadata from the article body on the first view.
  53          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
  54          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
  55          */
  56         function extractMetaDataFromArticle () {
  57                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
  58                 $this->mMetaData = '' ;
  59                 if ( !$wgUseMetadataEdit ) return ;
  60                 if ( $wgMetadataWhitelist == '' ) return ;
  61                 $s = '' ;
  62                 $t = $this->mArticle->getContent();
  63
  64                 # MISSING : <nowiki> filtering
  65
  66                 # Categories and language links
  67                 $t = explode ( "\n" , $t ) ;
  68                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
  69                 $cat = $ll = array() ;
  70                 foreach ( $t AS $key => $x )
  71                 {
  72                         $y = trim ( strtolower ( $x ) ) ;
  73                         while ( substr ( $y , 0 , 2 ) == '[[' )
  74                         {
  75                                 $y = explode ( ']]' , trim ( $x ) ) ;
  76                                 $first = array_shift ( $y ) ;
  77                                 $first = explode ( ':' , $first ) ;
  78                                 $ns = array_shift ( $first ) ;
  79                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
  80                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
  81                                 {
  82                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
  83                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
  84                                         else $ll[] = $add ;
  85                                         $x = implode ( ']]' , $y ) ;
  86                                         $t[$key] = $x ;
  87                                         $y = trim ( strtolower ( $x ) ) ;
  88                                 }
  89                         }
  90                 }
  91                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
  92                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
  93                 $t = implode ( "\n" , $t ) ;
  94
  95                 # Load whitelist
  96                 $sat = array () ; # stand-alone-templates; must be lowercase
  97                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
  98                 $wl_article = new Article ( $wl_title ) ;
  99                 $wl = explode ( "\n" , $wl_article->getContent() ) ;
 100                 foreach ( $wl AS $x )
 101                 {
 102                         $isentry = false ;
 103                         $x = trim ( $x ) ;
 104                         while ( substr ( $x , 0 , 1 ) == '*' )
 105                         {
 106                                 $isentry = true ;
 107                                 $x = trim ( substr ( $x , 1 ) ) ;
 108                         }
 109                         if ( $isentry )
 110                         {
 111                                 $sat[] = strtolower ( $x ) ;
 112                         }
 113
 114                 }
 115
 116                 # Templates, but only some
 117                 $t = explode ( '{{' , $t ) ;
 118                 $tl = array () ;
 119                 foreach ( $t AS $key => $x )
 120                 {
 121                         $y = explode ( '}}' , $x , 2 ) ;
 122                         if ( count ( $y ) == 2 )
 123                         {
 124                                 $z = $y[0] ;
 125                                 $z = explode ( '|' , $z ) ;
 126                                 $tn = array_shift ( $z ) ;
 127                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 128                                 {
 129                                         $tl[] = '{{' . $y[0] . '}}' ;
 130                                         $t[$key] = $y[1] ;
 131                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 132                                 }
 133                                 else $t[$key] = '{{' . $x ;
 134                         }
 135                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 136                         else $t[$key] = $x ;
 137                 }
 138                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 139                 $t = implode ( '' , $t ) ;
 140
 141                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 142                 $this->mArticle->mContent = $t ;
 143                 $this->mMetaData = $s ;
 144         }
 145
 146         function submit() {
 147                 $this->edit();
 148         }
 149
 150         /**
 151          * This is the function that gets called for "action=edit". It
 152          * sets up various member variables, then passes execution to
 153          * another function, usually showEditForm()
 154          *
 155          * The edit form is self-submitting, so that when things like
 156          * preview and edit conflicts occur, we get the same form back
 157          * with the extra stuff added.  Only when the final submission
 158          * is made and all is well do we actually save and redirect to
 159          * the newly-edited page.
 160          */
 161         function edit() {
 162                 global $wgOut, $wgUser, $wgRequest, $wgTitle;
 163                 global $wgEmailConfirmToEdit;
 164
 165                 if ( ! wfRunHooks( 'AlternateEdit', array( &$this  ) ) )
 166                         return;
 167
 168                 $fname = 'EditPage::edit';
 169                 wfProfileIn( $fname );
 170                 wfDebug( "$fname: enter\n" );
 171
 172                 // this is not an article
 173                 $wgOut->setArticleFlag(false);
 174
 175                 $this->importFormData( $wgRequest );
 176                 $this->firsttime = false;
 177
 178                 if( $this->live ) {
 179                         $this->livePreview();
 180                         wfProfileOut( $fname );
 181                         return;
 182                 }
 183
 184                 if ( ! $this->mTitle->userCanEdit() ) {
 185                         wfDebug( "$fname: user can't edit\n" );
 186                         $wgOut->readOnlyPage( $this->mArticle->getContent(), true );
 187                         wfProfileOut( $fname );
 188                         return;
 189                 }
 190                 wfDebug( "$fname: Checking blocks\n" );
 191                 if ( !$this->preview && !$this->diff && $wgUser->isBlockedFrom( $this->mTitle, !$this->save ) ) {
 192                         # When previewing, don't check blocked state - will get caught at save time.
 193                         # Also, check when starting edition is done against slave to improve performance.
 194                         wfDebug( "$fname: user is blocked\n" );
 195                         $wgOut->blockedPage();
 196                         wfProfileOut( $fname );
 197                         return;
 198                 }
 199                 if ( !$wgUser->isAllowed('edit') ) {
 200                         if ( $wgUser->isAnon() ) {
 201                                 wfDebug( "$fname: user must log in\n" );
 202                                 $this->userNotLoggedInPage();
 203                                 wfProfileOut( $fname );
 204                                 return;
 205                         } else {
 206                                 wfDebug( "$fname: read-only page\n" );
 207                                 $wgOut->readOnlyPage( $this->mArticle->getContent(), true );
 208                                 wfProfileOut( $fname );
 209                                 return;
 210                         }
 211                 }
 212                 if ($wgEmailConfirmToEdit && !$wgUser->isEmailConfirmed()) {
 213                         wfDebug("$fname: user must confirm e-mail address\n");
 214                         $this->userNotConfirmedPage();
 215                         wfProfileOut($fname);
 216                         return;
 217                 }
 218                 if ( !$this->mTitle->userCan( 'create' ) && !$this->mTitle->exists() ) {
 219                         wfDebug( "$fname: no create permission\n" );
 220                         $this->noCreatePermission();
 221                         wfProfileOut( $fname );
 222                         return;
 223                 }
 224                 if ( wfReadOnly() ) {
 225                         wfDebug( "$fname: read-only mode is engaged\n" );
 226                         if( $this->save || $this->preview ) {
 227                                 $this->formtype = 'preview';
 228                         } else if ( $this->diff ) {
 229                                 $this->formtype = 'diff';
 230                         } else {
 231                                 $wgOut->readOnlyPage( $this->mArticle->getContent() );
 232                                 wfProfileOut( $fname );
 233                                 return;
 234                         }
 235                 } else {
 236                         if ( $this->save ) {
 237                                 $this->formtype = 'save';
 238                         } else if ( $this->preview ) {
 239                                 $this->formtype = 'preview';
 240                         } else if ( $this->diff ) {
 241                                 $this->formtype = 'diff';
 242                         } else { # First time through
 243                                 $this->firsttime = true;
 244                                 if( $this->previewOnOpen() ) {
 245                                         $this->formtype = 'preview';
 246                                 } else {
 247                                         $this->extractMetaDataFromArticle () ;
 248                                         $this->formtype = 'initial';
 249                                 }
 250                         }
 251                 }
 252
 253                 wfProfileIn( "$fname-business-end" );
 254
 255                 $this->isConflict = false;
 256                 // css / js subpages of user pages get a special treatment
 257                 $this->isCssJsSubpage      = $wgTitle->isCssJsSubpage();
 258                 $this->isValidCssJsSubpage = $wgTitle->isValidCssJsSubpage();
 259
 260                 /* Notice that we can't use isDeleted, because it returns true if article is ever deleted
 261                  * no matter it's current state
 262                  */
 263                 $this->deletedSinceEdit = false;
 264                 if ( $this->edittime != '' ) {
 265                         /* Note that we rely on logging table, which hasn't been always there,
 266                          * but that doesn't matter, because this only applies to brand new
 267                          * deletes. This is done on every preview and save request. Move it further down
 268                          * to only perform it on saves
 269                          */
 270                         if ( $this->mTitle->isDeleted() ) {
 271                                 $this->lastDelete = $this->getLastDelete();
 272                                 if ( !is_null($this->lastDelete) ) {
 273                                         $deletetime = $this->lastDelete->log_timestamp;
 274                                         if ( ($deletetime - $this->starttime) > 0 ) {
 275                                                 $this->deletedSinceEdit = true;
 276                                         }
 277                                 }
 278                         }
 279                 }
 280
 281                 if(!$this->mTitle->getArticleID() && ('initial' == $this->formtype || $this->firsttime )) { # new article
 282                         $this->showIntro();
 283                 }
 284                 if( $this->mTitle->isTalkPage() ) {
 285                         $wgOut->addWikiText( wfMsg( 'talkpagetext' ) );
 286                 }
 287
 288                 # Attempt submission here.  This will check for edit conflicts,
 289                 # and redundantly check for locked database, blocked IPs, etc.
 290                 # that edit() already checked just in case someone tries to sneak
 291                 # in the back door with a hand-edited submission URL.
 292
 293                 if ( 'save' == $this->formtype ) {
 294                         if ( !$this->attemptSave() ) {
 295                                 wfProfileOut( "$fname-business-end" );
 296                                 wfProfileOut( $fname );
 297                                 return;
 298                         }
 299                 }
 300
 301                 # First time through: get contents, set time for conflict
 302                 # checking, etc.
 303                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 304                         $this->initialiseForm();
 305                 }
 306
 307                 $this->showEditForm();
 308                 wfProfileOut( "$fname-business-end" );
 309                 wfProfileOut( $fname );
 310         }
 311
 312         /**
 313          * Return true if this page should be previewed when the edit form
 314          * is initially opened.
 315          * @return bool
 316          * @private
 317          */
 318         function previewOnOpen() {
 319                 global $wgUser;
 320                 return $this->section != 'new' &&
 321                         ( ( $wgUser->getOption( 'previewonfirst' ) && $this->mTitle->exists() ) ||
 322                                 ( $this->mTitle->getNamespace() == NS_CATEGORY &&
 323                                         !$this->mTitle->exists() ) );
 324         }
 325
 326         /**
 327          * @todo document
 328          * @param $request
 329          */
 330         function importFormData( &$request ) {
 331                 global $wgLang, $wgUser;
 332                 $fname = 'EditPage::importFormData';
 333                 wfProfileIn( $fname );
 334
 335                 if( $request->wasPosted() ) {
 336                         # These fields need to be checked for encoding.
 337                         # Also remove trailing whitespace, but don't remove _initial_
 338                         # whitespace from the text boxes. This may be significant formatting.
 339                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 340                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 341                         $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
 342                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 343                         $this->summary   = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
 344
 345                         $this->edittime = $request->getVal( 'wpEdittime' );
 346                         $this->starttime = $request->getVal( 'wpStarttime' );
 347
 348                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 349
 350                         if( is_null( $this->edittime ) ) {
 351                                 # If the form is incomplete, force to preview.
 352                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 353                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 354                                 $this->preview  = true;
 355                         } else {
 356                                 /* Fallback for live preview */
 357                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 358                                 $this->diff = $request->getCheck( 'wpDiff' );
 359
 360                                 if( !$this->preview ) {
 361                                         if ( $this->tokenOk( $request ) ) {
 362                                                 # Some browsers will not report any submit button
 363                                                 # if the user hits enter in the comment box.
 364                                                 # The unmarked state will be assumed to be a save,
 365                                                 # if the form seems otherwise complete.
 366                                                 wfDebug( "$fname: Passed token check.\n" );
 367                                         } else {
 368                                                 # Page might be a hack attempt posted from
 369                                                 # an external site. Preview instead of saving.
 370                                                 wfDebug( "$fname: Failed token check; forcing preview\n" );
 371                                                 $this->preview = true;
 372                                         }
 373                                 }
 374                         }
 375                         $this->save    = ! ( $this->preview OR $this->diff );
 376                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 377                                 $this->edittime = null;
 378                         }
 379
 380                         if( !preg_match( '/^\d{14}$/', $this->starttime )) {
 381                                 $this->starttime = null;
 382                         }
 383
 384                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 385
 386                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 387                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 388
 389                         # Don't force edit summaries when a user is editing their own user or talk page
 390                         if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
 391                                 $this->allowBlankSummary = true;
 392                         } else {
 393                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
 394                         }
 395
 396                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 397                 } else {
 398                         # Not a posted form? Start with nothing.
 399                         wfDebug( "$fname: Not a posted form.\n" );
 400                         $this->textbox1  = '';
 401                         $this->textbox2  = '';
 402                         $this->mMetaData = '';
 403                         $this->summary   = '';
 404                         $this->edittime  = '';
 405                         $this->starttime = wfTimestampNow();
 406                         $this->preview   = false;
 407                         $this->save      = false;
 408                         $this->diff      = false;
 409                         $this->minoredit = false;
 410                         $this->watchthis = false;
 411                         $this->recreate  = false;
 412                 }
 413
 414                 $this->oldid = $request->getInt( 'oldid' );
 415
 416                 # Section edit can come from either the form or a link
 417                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 418
 419                 $this->live = $request->getCheck( 'live' );
 420                 $this->editintro = $request->getText( 'editintro' );
 421
 422                 wfProfileOut( $fname );
 423         }
 424
 425         /**
 426          * Make sure the form isn't faking a user's credentials.
 427          *
 428          * @param $request WebRequest
 429          * @return bool
 430          * @private
 431          */
 432         function tokenOk( &$request ) {
 433                 global $wgUser;
 434                 if( $wgUser->isAnon() ) {
 435                         # Anonymous users may not have a session
 436                         # open. Don't tokenize.
 437                         $this->mTokenOk = true;
 438                 } else {
 439                         $this->mTokenOk = $wgUser->matchEditToken( $request->getVal( 'wpEditToken' ) );
 440                 }
 441                 return $this->mTokenOk;
 442         }
 443
 444         /** */
 445         function showIntro() {
 446                 global $wgOut, $wgUser;
 447                 $addstandardintro=true;
 448                 if($this->editintro) {
 449                         $introtitle=Title::newFromText($this->editintro);
 450                         if(isset($introtitle) && $introtitle->userCanRead()) {
 451                                 $rev=Revision::newFromTitle($introtitle);
 452                                 if($rev) {
 453                                         $wgOut->addSecondaryWikiText($rev->getText());
 454                                         $addstandardintro=false;
 455                                 }
 456                         }
 457                 }
 458                 if($addstandardintro) {
 459                         if ( $wgUser->isLoggedIn() )
 460                                 $wgOut->addWikiText( wfMsg( 'newarticletext' ) );
 461                         else
 462                                 $wgOut->addWikiText( wfMsg( 'newarticletextanon' ) );
 463                 }
 464         }
 465
 466         /**
 467          * Attempt submission
 468          * @return bool false if output is done, true if the rest of the form should be displayed
 469          */
 470         function attemptSave() {
 471                 global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut;
 472                 global $wgMaxArticleSize;
 473
 474                 $fname = 'EditPage::attemptSave';
 475                 wfProfileIn( $fname );
 476                 wfProfileIn( "$fname-checks" );
 477
 478                 # Reintegrate metadata
 479                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 480                 $this->mMetaData = '' ;
 481
 482                 # Check for spam
 483                 if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 484                         $this->spamPage ( $matches[0] );
 485                         wfProfileOut( "$fname-checks" );
 486                         wfProfileOut( $fname );
 487                         return false;
 488                 }
 489                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 490                         # Error messages or other handling should be performed by the filter function
 491                         wfProfileOut( $fname );
 492                         wfProfileOut( "$fname-checks" );
 493                         return false;
 494                 }
 495                 if ( !wfRunHooks( 'EditFilter', array( &$this, $this->textbox1, $this->section ) ) ) {
 496                         # Error messages or other handling should be performed by the filter function
 497                         wfProfileOut( $fname );
 498                         wfProfileOut( "$fname-checks" );
 499                         return false;
 500                 }
 501                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 502                         # Check block state against master, thus 'false'.
 503                         $this->blockedIPpage();
 504                         wfProfileOut( "$fname-checks" );
 505                         wfProfileOut( $fname );
 506                         return false;
 507                 }
 508                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 509                 if ( $this->kblength > $wgMaxArticleSize ) {
 510                         // Error will be displayed by showEditForm()
 511                         $this->tooBig = true;
 512                         wfProfileOut( "$fname-checks" );
 513                         wfProfileOut( $fname );
 514                         return true;
 515                 }
 516
 517                 if ( !$wgUser->isAllowed('edit') ) {
 518                         if ( $wgUser->isAnon() ) {
 519                                 $this->userNotLoggedInPage();
 520                                 wfProfileOut( "$fname-checks" );
 521                                 wfProfileOut( $fname );
 522                                 return false;
 523                         }
 524                         else {
 525                                 $wgOut->readOnlyPage();
 526                                 wfProfileOut( "$fname-checks" );
 527                                 wfProfileOut( $fname );
 528                                 return false;
 529                         }
 530                 }
 531
 532                 if ( wfReadOnly() ) {
 533                         $wgOut->readOnlyPage();
 534                         wfProfileOut( "$fname-checks" );
 535                         wfProfileOut( $fname );
 536                         return false;
 537                 }
 538                 if ( $wgUser->pingLimiter() ) {
 539                         $wgOut->rateLimited();
 540                         wfProfileOut( "$fname-checks" );
 541                         wfProfileOut( $fname );
 542                         return false;
 543                 }
 544
 545                 # If the article has been deleted while editing, don't save it without
 546                 # confirmation
 547                 if ( $this->deletedSinceEdit && !$this->recreate ) {
 548                         wfProfileOut( "$fname-checks" );
 549                         wfProfileOut( $fname );
 550                         return true;
 551                 }
 552
 553                 wfProfileOut( "$fname-checks" );
 554
 555                 # If article is new, insert it.
 556                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 557                 if ( 0 == $aid ) {
 558                         // Late check for create permission, just in case *PARANOIA*
 559                         if ( !$this->mTitle->userCan( 'create' ) ) {
 560                                 wfDebug( "$fname: no create permission\n" );
 561                                 $this->noCreatePermission();
 562                                 wfProfileOut( $fname );
 563                                 return;
 564                         }
 565
 566                         # Don't save a new article if it's blank.
 567                         if ( ( '' == $this->textbox1 ) ) {
 568                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 569                                         wfProfileOut( $fname );
 570                                         return false;
 571                         }
 572
 573                         $isComment=($this->section=='new');
 574                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 575                                 $this->minoredit, $this->watchthis, false, $isComment);
 576
 577                         wfProfileOut( $fname );
 578                         return false;
 579                 }
 580
 581                 # Article exists. Check for edit conflict.
 582
 583                 $this->mArticle->clear(); # Force reload of dates, etc.
 584                 $this->mArticle->forUpdate( true ); # Lock the article
 585
 586                 if( $this->mArticle->getTimestamp() != $this->edittime ) {
 587                         $this->isConflict = true;
 588                         if( $this->section == 'new' ) {
 589                                 if( $this->mArticle->getUserText() == $wgUser->getName() &&
 590                                         $this->mArticle->getComment() == $this->summary ) {
 591                                         // Probably a duplicate submission of a new comment.
 592                                         // This can happen when squid resends a request after
 593                                         // a timeout but the first one actually went through.
 594                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 595                                 } else {
 596                                         // New comment; suppress conflict.
 597                                         $this->isConflict = false;
 598                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 599                                 }
 600                         }
 601                 }
 602                 $userid = $wgUser->getID();
 603
 604                 if ( $this->isConflict) {
 605                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 606                                 $this->mArticle->getTimestamp() . "'\n" );
 607                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
 608                 }
 609                 else {
 610                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 611                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
 612                 }
 613                 if( is_null( $text ) ) {
 614                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 615                         $this->isConflict = true;
 616                         $text = $this->textbox1;
 617                 }
 618
 619                 # Suppress edit conflict with self, except for section edits where merging is required.
 620                 if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 621                         wfDebug( "Suppressing edit conflict, same user.\n" );
 622                         $this->isConflict = false;
 623                 } else {
 624                         # switch from section editing to normal editing in edit conflict
 625                         if($this->isConflict) {
 626                                 # Attempt merge
 627                                 if( $this->mergeChangesInto( $text ) ){
 628                                         // Successful merge! Maybe we should tell the user the good news?
 629                                         $this->isConflict = false;
 630                                         wfDebug( "Suppressing edit conflict, successful merge.\n" );
 631                                 } else {
 632                                         $this->section = '';
 633                                         $this->textbox1 = $text;
 634                                         wfDebug( "Keeping edit conflict, failed merge.\n" );
 635                                 }
 636                         }
 637                 }
 638
 639                 if ( $this->isConflict ) {
 640                         wfProfileOut( $fname );
 641                         return true;
 642                 }
 643
 644                 # Handle the user preference to force summaries here
 645                 if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
 646                         if( md5( $this->summary ) == $this->autoSumm ) {
 647                                 $this->missingSummary = true;
 648                                 wfProfileOut( $fname );
 649                                 return( true );
 650                         }
 651                 }
 652
 653                 # All's well
 654                 wfProfileIn( "$fname-sectionanchor" );
 655                 $sectionanchor = '';
 656                 if( $this->section == 'new' ) {
 657                         if ( $this->textbox1 == '' ) {
 658                                 $this->missingComment = true;
 659                                 return true;
 660                         }
 661                         if( $this->summary != '' ) {
 662                                 $sectionanchor = $this->sectionAnchor( $this->summary );
 663                         }
 664                 } elseif( $this->section != '' ) {
 665                         # Try to get a section anchor from the section source, redirect to edited section if header found
 666                         # XXX: might be better to integrate this into Article::replaceSection
 667                         # for duplicate heading checking and maybe parsing
 668                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 669                         # we can't deal with anchors, includes, html etc in the header for now,
 670                         # headline would need to be parsed to improve this
 671                         if($hasmatch and strlen($matches[2]) > 0) {
 672                                 $sectionanchor = $this->sectionAnchor( $matches[2] );
 673                         }
 674                 }
 675                 wfProfileOut( "$fname-sectionanchor" );
 676
 677                 // Save errors may fall down to the edit form, but we've now
 678                 // merged the section into full text. Clear the section field
 679                 // so that later submission of conflict forms won't try to
 680                 // replace that into a duplicated mess.
 681                 $this->textbox1 = $text;
 682                 $this->section = '';
 683
 684                 // Check for length errors again now that the section is merged in
 685                 $this->kblength = (int)(strlen( $text ) / 1024);
 686                 if ( $this->kblength > $wgMaxArticleSize ) {
 687                         $this->tooBig = true;
 688                         wfProfileOut( $fname );
 689                         return true;
 690                 }
 691
 692                 # update the article here
 693                 if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 694                         $this->watchthis, '', $sectionanchor ) ) {
 695                         wfProfileOut( $fname );
 696                         return false;
 697                 } else {
 698                         $this->isConflict = true;
 699                 }
 700                 wfProfileOut( $fname );
 701                 return true;
 702         }
 703
 704         /**
 705          * Initialise form fields in the object
 706          * Called on the first invocation, e.g. when a user clicks an edit link
 707          */
 708         function initialiseForm() {
 709                 $this->edittime = $this->mArticle->getTimestamp();
 710                 $this->textbox1 = $this->mArticle->getContent();
 711                 $this->summary = '';
 712                 if ( !$this->mArticle->exists() && $this->mArticle->mTitle->getNamespace() == NS_MEDIAWIKI )
 713                         $this->textbox1 = wfMsgWeirdKey ( $this->mArticle->mTitle->getText() ) ;
 714                 wfProxyCheck();
 715         }
 716
 717         /**
 718          * Send the edit form and related headers to $wgOut
 719          * @param $formCallback Optional callable that takes an OutputPage
 720          *                      parameter; will be called during form output
 721          *                      near the top, for captchas and the like.
 722          */
 723         function showEditForm( $formCallback=null ) {
 724                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize;
 725
 726                 $fname = 'EditPage::showEditForm';
 727                 wfProfileIn( $fname );
 728
 729                 $sk =& $wgUser->getSkin();
 730
 731                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
 732
 733                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 734
 735                 # Enabled article-related sidebar, toplinks, etc.
 736                 $wgOut->setArticleRelated( true );
 737
 738                 if ( $this->isConflict ) {
 739                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 740                         $wgOut->setPageTitle( $s );
 741                         $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
 742
 743                         $this->textbox2 = $this->textbox1;
 744                         $this->textbox1 = $this->mArticle->getContent();
 745                         $this->edittime = $this->mArticle->getTimestamp();
 746                 } else {
 747
 748                         if( $this->section != '' ) {
 749                                 if( $this->section == 'new' ) {
 750                                         $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
 751                                 } else {
 752                                         $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
 753                                         if( !$this->preview && !$this->diff ) {
 754                                                 preg_match( "/^(=+)(.+)\\1/mi",
 755                                                         $this->textbox1,
 756                                                         $matches );
 757                                                 if( !empty( $matches[2] ) ) {
 758                                                         $this->summary = "/* ". trim($matches[2])." */ ";
 759                                                 }
 760                                         }
 761                                 }
 762                         } else {
 763                                 $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 764                         }
 765                         $wgOut->setPageTitle( $s );
 766
 767                         if ( $this->missingComment ) {
 768                                 $wgOut->addWikiText( wfMsg( 'missingcommenttext' ) );
 769                         }
 770
 771                         if( $this->missingSummary ) {
 772                                 $wgOut->addWikiText( wfMsg( 'missingsummary' ) );
 773                         }
 774
 775                         if ( !$this->checkUnicodeCompliantBrowser() ) {
 776                                 $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
 777                         }
 778                         if ( isset( $this->mArticle )
 779                              && isset( $this->mArticle->mRevision )
 780                              && !$this->mArticle->mRevision->isCurrent() ) {
 781                                 $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
 782                                 $wgOut->addWikiText( wfMsg( 'editingold' ) );
 783                         }
 784                 }
 785
 786                 if( wfReadOnly() ) {
 787                         $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
 788                 } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
 789                         $wgOut->addWikiText( wfMsg( 'anoneditwarning' ) );
 790                 } else {
 791                         if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
 792                                 # Check the skin exists
 793                                 if( $this->isValidCssJsSubpage ) {
 794                                         $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ) );
 795                                 } else {
 796                                         $wgOut->addWikiText( wfMsg( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
 797                                 }
 798                         }
 799                 }
 800
 801                 if( $this->mTitle->isProtected( 'edit' ) ) {
 802                         # Is the protection due to the namespace, e.g. interface text?
 803                         if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 804                                 # Yes; remind the user
 805                                 $notice = wfMsg( 'editinginterface' );
 806                         } elseif( $this->mTitle->isSemiProtected() ) {
 807                                 # No; semi protected
 808                                 $notice = wfMsg( 'semiprotectedpagewarning' );
 809                                 if( wfEmptyMsg( 'semiprotectedpagewarning', $notice ) || $notice == '-' ) {
 810                                         $notice = '';
 811                                 }
 812                         } else {
 813                                 # No; regular protection
 814                                 $notice = wfMsg( 'protectedpagewarning' );
 815                         }
 816                         $wgOut->addWikiText( $notice );
 817                 }
 818
 819                 if ( $this->kblength === false ) {
 820                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 821                 }
 822                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
 823                         $wgOut->addWikiText( wfMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize ) );
 824                 } elseif( $this->kblength > 29 ) {
 825                         $wgOut->addWikiText( wfMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) ) );
 826                 }
 827
 828                 $rows = $wgUser->getOption( 'rows' );
 829                 $cols = $wgUser->getOption( 'cols' );
 830
 831                 $ew = $wgUser->getOption( 'editwidth' );
 832                 if ( $ew ) $ew = " style=\"width:100%\"";
 833                 else $ew = '';
 834
 835                 $q = 'action=submit';
 836                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 837                 $action = $this->mTitle->escapeLocalURL( $q );
 838
 839                 $summary = wfMsg('summary');
 840                 $subject = wfMsg('subject');
 841                 $minor   = wfMsg('minoredit');
 842                 $watchthis = wfMsg ('watchthis');
 843
 844                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
 845                                 wfMsg('cancel') );
 846                 $edithelpurl = $sk->makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
 847                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
 848                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
 849                         htmlspecialchars( wfMsg( 'newwindow' ) );
 850
 851                 global $wgRightsText;
 852                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
 853                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
 854                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
 855                                 $wgRightsText ) . "\n</div>";
 856
 857                 if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
 858                         # prepare toolbar for edit buttons
 859                         $toolbar = $this->getEditToolbar();
 860                 } else {
 861                         $toolbar = '';
 862                 }
 863
 864                 // activate checkboxes if user wants them to be always active
 865                 if( !$this->preview && !$this->diff ) {
 866                         # Sort out the "watch" checkbox
 867                         if( $wgUser->getOption( 'watchdefault' ) ) {
 868                                 # Watch all edits
 869                                 $this->watchthis = true;
 870                         } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 871                                 # Watch creations
 872                                 $this->watchthis = true;
 873                         } elseif( $this->mTitle->userIsWatching() ) {
 874                                 # Already watched
 875                                 $this->watchthis = true;
 876                         }
 877
 878                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
 879                 }
 880
 881                 $minoredithtml = '';
 882
 883                 if ( $wgUser->isAllowed('minoredit') ) {
 884                         $minoredithtml =
 885                                 "<input tabindex='3' type='checkbox' value='1' name='wpMinoredit'".($this->minoredit?" checked='checked'":"").
 886                                 " accesskey='".wfMsg('accesskey-minoredit')."' id='wpMinoredit' />".
 887                                 "<label for='wpMinoredit' title='".wfMsg('tooltip-minoredit')."'>{$minor}</label>";
 888                 }
 889
 890                 $watchhtml = '';
 891
 892                 if ( $wgUser->isLoggedIn() ) {
 893                         $watchhtml = "<input tabindex='4' type='checkbox' name='wpWatchthis'".
 894                                 ($this->watchthis?" checked='checked'":"").
 895                                 " accesskey=\"".htmlspecialchars(wfMsg('accesskey-watch'))."\" id='wpWatchthis'  />".
 896                                 "<label for='wpWatchthis' title=\"" .
 897                                         htmlspecialchars(wfMsg('tooltip-watch'))."\">{$watchthis}</label>";
 898                 }
 899
 900                 $checkboxhtml = $minoredithtml . $watchhtml;
 901
 902                 if ( $wgUser->getOption( 'previewontop' ) ) {
 903
 904                         if ( 'preview' == $this->formtype ) {
 905                                 $this->showPreview();
 906                         } else {
 907                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
 908                         }
 909
 910                         if ( 'diff' == $this->formtype ) {
 911                                 $wgOut->addHTML( $this->getDiff() );
 912                         }
 913                 }
 914
 915
 916                 # if this is a comment, show a subject line at the top, which is also the edit summary.
 917                 # Otherwise, show a summary field at the bottom
 918                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
 919                 if( $this->section == 'new' ) {
 920                         $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span> <div class='editOptions'><input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
 921                         $editsummary = '';
 922                 } else {
 923                         $commentsubject = '';
 924                         $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span> <div class='editOptions'><input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
 925                 }
 926
 927                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
 928                 if( !$this->preview && !$this->diff ) {
 929                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
 930                 }
 931                 $templates = $this->formatTemplates();
 932
 933                 global $wgUseMetadataEdit ;
 934                 if ( $wgUseMetadataEdit ) {
 935                         $metadata = $this->mMetaData ;
 936                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
 937                         $helppage = Title::newFromText( wfMsg( "metadata_page" ) ) ;
 938                         $top = wfMsg( 'metadata', $helppage->getLocalURL() );
 939                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
 940                 }
 941                 else $metadata = "" ;
 942
 943                 $hidden = '';
 944                 $recreate = '';
 945                 if ($this->deletedSinceEdit) {
 946                         if ( 'save' != $this->formtype ) {
 947                                 $wgOut->addWikiText( wfMsg('deletedwhileediting'));
 948                         } else {
 949                                 // Hide the toolbar and edit area, use can click preview to get it back
 950                                 // Add an confirmation checkbox and explanation.
 951                                 $toolbar = '';
 952                                 $hidden = 'type="hidden" style="display:none;"';
 953                                 $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
 954                                 $recreate .=
 955                                         "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
 956                                         "<label for='wpRecreate' title='".wfMsg('tooltip-recreate')."'>". wfMsg('recreate')."</label>";
 957                         }
 958                 }
 959
 960                 $temp = array(
 961                         'id'        => 'wpSave',
 962                         'name'      => 'wpSave',
 963                         'type'      => 'submit',
 964                         'tabindex'  => '5',
 965                         'value'     => wfMsg('savearticle'),
 966                         'accesskey' => wfMsg('accesskey-save'),
 967                         'title'     => wfMsg('tooltip-save'),
 968                 );
 969                 $buttons['save'] = wfElement('input', $temp, '');
 970                 $temp = array(
 971                         'id'        => 'wpDiff',
 972                         'name'      => 'wpDiff',
 973                         'type'      => 'submit',
 974                         'tabindex'  => '7',
 975                         'value'     => wfMsg('showdiff'),
 976                         'accesskey' => wfMsg('accesskey-diff'),
 977                         'title'     => wfMsg('tooltip-diff'),
 978                 );
 979                 $buttons['diff'] = wfElement('input', $temp, '');
 980
 981                 global $wgLivePreview;
 982                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
 983                         $temp = array(
 984                                 'id'        => 'wpPreview',
 985                                 'name'      => 'wpPreview',
 986                                 'type'      => 'submit',
 987                                 'tabindex'  => '6',
 988                                 'value'     => wfMsg('showpreview'),
 989                                 'accesskey' => '',
 990                                 'title'     => wfMsg('tooltip-preview'),
 991                                 'style'     => 'display: none;',
 992                         );
 993                         $buttons['preview'] = wfElement('input', $temp, '');
 994                         $temp = array(
 995                                 'id'        => 'wpLivePreview',
 996                                 'name'      => 'wpLivePreview',
 997                                 'type'      => 'submit',
 998                                 'tabindex'  => '6',
 999                                 'value'     => wfMsg('showlivepreview'),
1000                                 'accesskey' => wfMsg('accesskey-preview'),
1001                                 'title'     => '',
1002                                 'onclick'   => $this->doLivePreviewScript(),
1003                         );
1004                         $buttons['live'] = wfElement('input', $temp, '');
1005                 } else {
1006                         $temp = array(
1007                                 'id'        => 'wpPreview',
1008                                 'name'      => 'wpPreview',
1009                                 'type'      => 'submit',
1010                                 'tabindex'  => '6',
1011                                 'value'     => wfMsg('showpreview'),
1012                                 'accesskey' => wfMsg('accesskey-preview'),
1013                                 'title'     => wfMsg('tooltip-preview'),
1014                         );
1015                         $buttons['preview'] = wfElement('input', $temp, '');
1016                         $buttons['live'] = '';
1017                 }
1018
1019                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1020                         ? ""
1021                         : "<input type='hidden' name=\"safemode\" value='1' />\n";
1022
1023                 $wgOut->addHTML( <<<END
1024 {$toolbar}
1025 <form id="editform" name="editform" method="post" action="$action"
1026 enctype="multipart/form-data">
1027 END
1028 );
1029
1030                 if( is_callable( $formCallback ) ) {
1031                         call_user_func_array( $formCallback, array( &$wgOut ) );
1032                 }
1033
1034                 // Put these up at the top to ensure they aren't lost on early form submission
1035                 $wgOut->addHTML( "
1036 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1037 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1038 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1039 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1040
1041                 $wgOut->addHTML( <<<END
1042 $recreate
1043 {$commentsubject}
1044 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
1045 cols='{$cols}'{$ew} $hidden>
1046 END
1047 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) ) .
1048 "
1049 </textarea>
1050                 " );
1051
1052                 $wgOut->addWikiText( $copywarn );
1053                 $wgOut->addHTML( "
1054 {$metadata}
1055 {$editsummary}
1056 {$checkboxhtml}
1057 {$safemodehtml}
1058 ");
1059
1060                 $wgOut->addHTML("
1061 <div class='editButtons'>
1062         {$buttons['save']}
1063         {$buttons['preview']}
1064         {$buttons['live']}
1065         {$buttons['diff']}
1066         <span class='editHelp'>{$cancel} | {$edithelp}</span>
1067 </div><!-- editButtons -->
1068 </div><!-- editOptions -->");
1069
1070                 $wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
1071
1072                 $wgOut->addHTML( "
1073 <div class='templatesUsed'>
1074 {$templates}
1075 </div>
1076 " );
1077
1078                 if ( $wgUser->isLoggedIn() ) {
1079                         /**
1080                          * To make it harder for someone to slip a user a page
1081                          * which submits an edit form to the wiki without their
1082                          * knowledge, a random token is associated with the login
1083                          * session. If it's not passed back with the submission,
1084                          * we won't save the page, or render user JavaScript and
1085                          * CSS previews.
1086                          */
1087                         $token = htmlspecialchars( $wgUser->editToken() );
1088                         $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1089                 }
1090
1091                 # If a blank edit summary was previously provided, and the appropriate
1092                 # user preference is active, pass a hidden tag here. This will stop the
1093                 # user being bounced back more than once in the event that a summary
1094                 # is not required.
1095                 if( $this->missingSummary ) {
1096                         $wgOut->addHTML( "<input type=\"hidden\" name=\"wpIgnoreBlankSummary\" value=\"1\" />\n" );
1097                 }
1098
1099                 # For a bit more sophisticated detection of blank summaries, hash the
1100                 # automatic one and pass that in a hidden field.
1101                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1102                 $wgOut->addHTML( "<input type=\"hidden\" name=\"wpAutoSummary\" value=\"$autosumm\" />\n" );
1103
1104                 if ( $this->isConflict ) {
1105                         require_once( "DifferenceEngine.php" );
1106                         $wgOut->addWikiText( '==' . wfMsg( "yourdiff" ) . '==' );
1107
1108                         $de = new DifferenceEngine( $this->mTitle );
1109                         $de->setText( $this->textbox2, $this->textbox1 );
1110                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1111
1112                         $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
1113                         $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
1114                                 . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
1115                 }
1116                 $wgOut->addHTML( "</form>\n" );
1117                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1118
1119                         if ( $this->formtype == 'preview') {
1120                                 $this->showPreview();
1121                         } else {
1122                                 $wgOut->addHTML( '<div id="wikiPreview"></div>' );
1123                         }
1124
1125                         if ( $this->formtype == 'diff') {
1126                                 $wgOut->addHTML( $this->getDiff() );
1127                         }
1128
1129                 }
1130
1131                 wfProfileOut( $fname );
1132         }
1133
1134         /**
1135          * Append preview output to $wgOut.
1136          * Includes category rendering if this is a category page.
1137          * @private
1138          */
1139         function showPreview() {
1140                 global $wgOut;
1141                 $wgOut->addHTML( '<div id="wikiPreview">' );
1142                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1143                         $this->mArticle->openShowCategory();
1144                 }
1145                 $previewOutput = $this->getPreviewText();
1146                 $wgOut->addHTML( $previewOutput );
1147                 if($this->mTitle->getNamespace() == NS_CATEGORY) {
1148                         $this->mArticle->closeShowCategory();
1149                 }
1150                 $wgOut->addHTML( "<br style=\"clear:both;\" />\n" );
1151                 $wgOut->addHTML( '</div>' );
1152         }
1153
1154         /**
1155          * Prepare a list of templates used by this page. Returns HTML.
1156          */
1157         function formatTemplates() {
1158                 global $wgUser;
1159
1160                 $fname = 'EditPage::formatTemplates';
1161                 wfProfileIn( $fname );
1162
1163                 $sk =& $wgUser->getSkin();
1164
1165                 $outText = '';
1166                 $templates = $this->mArticle->getUsedTemplates();
1167                 if ( count( $templates ) > 0 ) {
1168                         # Do a batch existence check
1169                         $batch = new LinkBatch;
1170                         foreach( $templates as $title ) {
1171                                 $batch->addObj( $title );
1172                         }
1173                         $batch->execute();
1174
1175                         # Construct the HTML
1176                         $outText = '<br />'. wfMsg( 'templatesused' ) . '<ul>';
1177                         foreach ( $templates as $titleObj ) {
1178                                 $outText .= '<li>' . $sk->makeLinkObj( $titleObj ) . '</li>';
1179                         }
1180                         $outText .= '</ul>';
1181                 }
1182                 wfProfileOut( $fname );
1183                 return $outText;
1184         }
1185
1186         /**
1187          * Live Preview lets us fetch rendered preview page content and
1188          * add it to the page without refreshing the whole page.
1189          * If not supported by the browser it will fall through to the normal form
1190          * submission method.
1191          *
1192          * This function outputs a script tag to support live preview, and
1193          * returns an onclick handler which should be added to the attributes
1194          * of the preview button
1195          */
1196         function doLivePreviewScript() {
1197                 global $wgStylePath, $wgJsMimeType, $wgOut, $wgTitle;
1198                 $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
1199                         htmlspecialchars( $wgStylePath . '/common/preview.js' ) .
1200                         '"></script>' . "\n" );
1201                 $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
1202                 return "return !livePreview(" .
1203                         "getElementById('wikiPreview')," .
1204                         "editform.wpTextbox1.value," .
1205                         '"' . $liveAction . '"' . ")";
1206         }
1207
1208         function getLastDelete() {
1209                 $dbr =& wfGetDB( DB_SLAVE );
1210                 $fname = 'EditPage::getLastDelete';
1211                 $res = $dbr->select(
1212                         array( 'logging', 'user' ),
1213                         array( 'log_type',
1214                                'log_action',
1215                                'log_timestamp',
1216                                'log_user',
1217                                'log_namespace',
1218                                'log_title',
1219                                'log_comment',
1220                                'log_params',
1221                                'user_name', ),
1222                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1223                                'log_title' => $this->mTitle->getDBkey(),
1224                                'log_type' => 'delete',
1225                                'log_action' => 'delete',
1226                                'user_id=log_user' ),
1227                         $fname,
1228                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
1229
1230                 if($dbr->numRows($res) == 1) {
1231                         while ( $x = $dbr->fetchObject ( $res ) )
1232                                 $data = $x;
1233                         $dbr->freeResult ( $res ) ;
1234                 } else {
1235                         $data = null;
1236                 }
1237                 return $data;
1238         }
1239
1240         /**
1241          * @todo document
1242          */
1243         function getPreviewText() {
1244                 global $wgOut, $wgUser, $wgTitle, $wgParser;
1245
1246                 $fname = 'EditPage::getPreviewText';
1247                 wfProfileIn( $fname );
1248
1249                 if ( $this->mTokenOk ) {
1250                         $msg = 'previewnote';
1251                 } else {
1252                         $msg = 'session_fail_preview';
1253                 }
1254                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
1255                         "<div class='previewnote'>" . $wgOut->parse( wfMsg( $msg ) ) . "</div>\n";
1256                 if ( $this->isConflict ) {
1257                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1258                 }
1259
1260                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1261                 $parserOptions->setEditSection( false );
1262
1263                 # don't parse user css/js, show message about preview
1264                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1265
1266                 if ( $this->isCssJsSubpage ) {
1267                         if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
1268                                 $previewtext = wfMsg('usercsspreview');
1269                         } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
1270                                 $previewtext = wfMsg('userjspreview');
1271                         }
1272                         $parserOptions->setTidy(true);
1273                         $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
1274                         $wgOut->addHTML( $parserOutput->mText );
1275                         wfProfileOut( $fname );
1276                         return $previewhead;
1277                 } else {
1278                         # if user want to see preview when he edit an article
1279                         if( $wgUser->getOption('previewonfirst') and ($this->textbox1 == '')) {
1280                                 $this->textbox1 = $this->mArticle->getContent();
1281                         }
1282
1283                         $toparse = $this->textbox1;
1284
1285                         # If we're adding a comment, we need to show the
1286                         # summary as the headline
1287                         if($this->section=="new" && $this->summary!="") {
1288                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1289                         }
1290
1291                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
1292                         $parserOptions->setTidy(true);
1293                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
1294                                         $wgTitle, $parserOptions );
1295
1296                         $previewHTML = $parserOutput->getText();
1297                         $wgOut->addParserOutputNoText( $parserOutput );
1298
1299                         wfProfileOut( $fname );
1300                         return $previewhead . $previewHTML;
1301                 }
1302         }
1303
1304         /**
1305          * Call the stock "user is blocked" page
1306          */
1307         function blockedIPpage() {
1308                 global $wgOut;
1309                 $wgOut->blockedPage();
1310         }
1311
1312         /**
1313          * Produce the stock "please login to edit pages" page
1314          */
1315         function userNotLoggedInPage() {
1316                 global $wgUser, $wgOut;
1317                 $skin = $wgUser->getSkin();
1318
1319                 $loginTitle = Title::makeTitle( NS_SPECIAL, 'Userlogin' );
1320                 $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $this->mTitle->getPrefixedUrl() );
1321
1322                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1323                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1324                 $wgOut->setArticleRelated( false );
1325
1326                 $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1327                 $wgOut->returnToMain( false, $this->mTitle->getPrefixedUrl() );
1328         }
1329
1330         /**
1331          * Creates a basic error page which informs the user that
1332          * they have to validate their email address before being
1333          * allowed to edit.
1334          */
1335         function userNotConfirmedPage() {
1336                 global $wgOut;
1337
1338                 $wgOut->setPageTitle( wfMsg( 'confirmedittitle' ) );
1339                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1340                 $wgOut->setArticleRelated( false );
1341
1342                 $wgOut->addWikiText( wfMsg( 'confirmedittext' ) );
1343                 $wgOut->returnToMain( false );
1344         }
1345
1346         /**
1347          * Produce the stock "your edit contains spam" page
1348          *
1349          * @param $match Text which triggered one or more filters
1350          */
1351         function spamPage( $match = false ) {
1352                 global $wgOut;
1353
1354                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1355                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1356                 $wgOut->setArticleRelated( false );
1357
1358                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
1359                 if ( $match )
1360                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
1361
1362                 $wgOut->returnToMain( false );
1363         }
1364
1365         /**
1366          * @private
1367          * @todo document
1368          */
1369         function mergeChangesInto( &$editText ){
1370                 $fname = 'EditPage::mergeChangesInto';
1371                 wfProfileIn( $fname );
1372
1373                 $db =& wfGetDB( DB_MASTER );
1374
1375                 // This is the revision the editor started from
1376                 $baseRevision = Revision::loadFromTimestamp(
1377                         $db, $this->mArticle->mTitle, $this->edittime );
1378                 if( is_null( $baseRevision ) ) {
1379                         wfProfileOut( $fname );
1380                         return false;
1381                 }
1382                 $baseText = $baseRevision->getText();
1383
1384                 // The current state, we want to merge updates into it
1385                 $currentRevision =  Revision::loadFromTitle(
1386                         $db, $this->mArticle->mTitle );
1387                 if( is_null( $currentRevision ) ) {
1388                         wfProfileOut( $fname );
1389                         return false;
1390                 }
1391                 $currentText = $currentRevision->getText();
1392
1393                 if( wfMerge( $baseText, $editText, $currentText, $result ) ){
1394                         $editText = $result;
1395                         wfProfileOut( $fname );
1396                         return true;
1397                 } else {
1398                         wfProfileOut( $fname );
1399                         return false;
1400                 }
1401         }
1402
1403         /**
1404          * Check if the browser is on a blacklist of user-agents known to
1405          * mangle UTF-8 data on form submission. Returns true if Unicode
1406          * should make it through, false if it's known to be a problem.
1407          * @return bool
1408          * @private
1409          */
1410         function checkUnicodeCompliantBrowser() {
1411                 global $wgBrowserBlackList;
1412                 if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
1413                         // No User-Agent header sent? Trust it by default...
1414                         return true;
1415                 }
1416                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
1417                 foreach ( $wgBrowserBlackList as $browser ) {
1418                         if ( preg_match($browser, $currentbrowser) ) {
1419                                 return false;
1420                         }
1421                 }
1422                 return true;
1423         }
1424
1425         /**
1426          * Format an anchor fragment as it would appear for a given section name
1427          * @param string $text
1428          * @return string
1429          * @private
1430          */
1431         function sectionAnchor( $text ) {
1432                 $headline = Sanitizer::decodeCharReferences( $text );
1433                 # strip out HTML
1434                 $headline = preg_replace( '/<.*?' . '>/', '', $headline );
1435                 $headline = trim( $headline );
1436                 $sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
1437                 $replacearray = array(
1438                         '%3A' => ':',
1439                         '%' => '.'
1440                 );
1441                 return str_replace(
1442                         array_keys( $replacearray ),
1443                         array_values( $replacearray ),
1444                         $sectionanchor );
1445         }
1446
1447         /**
1448          * Shows a bulletin board style toolbar for common editing functions.
1449          * It can be disabled in the user preferences.
1450          * The necessary JavaScript code can be found in style/wikibits.js.
1451          */
1452         function getEditToolbar() {
1453                 global $wgStylePath, $wgContLang, $wgJsMimeType;
1454
1455                 /**
1456                  * toolarray an array of arrays which each include the filename of
1457                  * the button image (without path), the opening tag, the closing tag,
1458                  * and optionally a sample text that is inserted between the two when no
1459                  * selection is highlighted.
1460                  * The tip text is shown when the user moves the mouse over the button.
1461                  *
1462                  * Already here are accesskeys (key), which are not used yet until someone
1463                  * can figure out a way to make them work in IE. However, we should make
1464                  * sure these keys are not defined on the edit page.
1465                  */
1466                 $toolarray=array(
1467                         array(  'image'=>'button_bold.png',
1468                                         'open'  =>      "\'\'\'",
1469                                         'close' =>      "\'\'\'",
1470                                         'sample'=>      wfMsg('bold_sample'),
1471                                         'tip'   =>      wfMsg('bold_tip'),
1472                                         'key'   =>      'B'
1473                                 ),
1474                         array(  'image'=>'button_italic.png',
1475                                         'open'  =>      "\'\'",
1476                                         'close' =>      "\'\'",
1477                                         'sample'=>      wfMsg('italic_sample'),
1478                                         'tip'   =>      wfMsg('italic_tip'),
1479                                         'key'   =>      'I'
1480                                 ),
1481                         array(  'image'=>'button_link.png',
1482                                         'open'  =>      '[[',
1483                                         'close' =>      ']]',
1484                                         'sample'=>      wfMsg('link_sample'),
1485                                         'tip'   =>      wfMsg('link_tip'),
1486                                         'key'   =>      'L'
1487                                 ),
1488                         array(  'image'=>'button_extlink.png',
1489                                         'open'  =>      '[',
1490                                         'close' =>      ']',
1491                                         'sample'=>      wfMsg('extlink_sample'),
1492                                         'tip'   =>      wfMsg('extlink_tip'),
1493                                         'key'   =>      'X'
1494                                 ),
1495                         array(  'image'=>'button_headline.png',
1496                                         'open'  =>      "\\n== ",
1497                                         'close' =>      " ==\\n",
1498                                         'sample'=>      wfMsg('headline_sample'),
1499                                         'tip'   =>      wfMsg('headline_tip'),
1500                                         'key'   =>      'H'
1501                                 ),
1502                         array(  'image'=>'button_image.png',
1503                                         'open'  =>      '[['.$wgContLang->getNsText(NS_IMAGE).":",
1504                                         'close' =>      ']]',
1505                                         'sample'=>      wfMsg('image_sample'),
1506                                         'tip'   =>      wfMsg('image_tip'),
1507                                         'key'   =>      'D'
1508                                 ),
1509                         array(  'image' =>'button_media.png',
1510                                         'open'  =>      '[['.$wgContLang->getNsText(NS_MEDIA).':',
1511                                         'close' =>      ']]',
1512                                         'sample'=>      wfMsg('media_sample'),
1513                                         'tip'   =>      wfMsg('media_tip'),
1514                                         'key'   =>      'M'
1515                                 ),
1516                         array(  'image' =>'button_math.png',
1517                                         'open'  =>      "\\<math\\>",
1518                                         'close' =>      "\\</math\\>",
1519                                         'sample'=>      wfMsg('math_sample'),
1520                                         'tip'   =>      wfMsg('math_tip'),
1521                                         'key'   =>      'C'
1522                                 ),
1523                         array(  'image' =>'button_nowiki.png',
1524                                         'open'  =>      "\\<nowiki\\>",
1525                                         'close' =>      "\\</nowiki\\>",
1526                                         'sample'=>      wfMsg('nowiki_sample'),
1527                                         'tip'   =>      wfMsg('nowiki_tip'),
1528                                         'key'   =>      'N'
1529                                 ),
1530                         array(  'image' =>'button_sig.png',
1531                                         'open'  =>      '--~~~~',
1532                                         'close' =>      '',
1533                                         'sample'=>      '',
1534                                         'tip'   =>      wfMsg('sig_tip'),
1535                                         'key'   =>      'Y'
1536                                 ),
1537                         array(  'image' =>'button_hr.png',
1538                                         'open'  =>      "\\n----\\n",
1539                                         'close' =>      '',
1540                                         'sample'=>      '',
1541                                         'tip'   =>      wfMsg('hr_tip'),
1542                                         'key'   =>      'R'
1543                                 )
1544                 );
1545                 $toolbar = "<div id='toolbar'>\n";
1546                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1547
1548                 foreach($toolarray as $tool) {
1549
1550                         $image=$wgStylePath.'/common/images/'.$tool['image'];
1551                         $open=$tool['open'];
1552                         $close=$tool['close'];
1553                         $sample = wfEscapeJsString( $tool['sample'] );
1554
1555                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1556                         // Older browsers show a "speedtip" type message only for ALT.
1557                         // Ideally these should be different, realistically they
1558                         // probably don't need to be.
1559                         $tip = wfEscapeJsString( $tool['tip'] );
1560
1561                         #$key = $tool["key"];
1562
1563                         $toolbar.="addButton('$image','$tip','$open','$close','$sample');\n";
1564                 }
1565
1566                 $toolbar.="/*]]>*/\n</script>";
1567                 $toolbar.="\n</div>";
1568                 return $toolbar;
1569         }
1570
1571         /**
1572          * Output preview text only. This can be sucked into the edit page
1573          * via JavaScript, and saves the server time rendering the skin as
1574          * well as theoretically being more robust on the client (doesn't
1575          * disturb the edit box's undo history, won't eat your text on
1576          * failure, etc).
1577          *
1578          * @todo This doesn't include category or interlanguage links.
1579          *       Would need to enhance it a bit, maybe wrap them in XML
1580          *       or something... that might also require more skin
1581          *       initialization, so check whether that's a problem.
1582          */
1583         function livePreview() {
1584                 global $wgOut;
1585                 $wgOut->disable();
1586                 header( 'Content-type: text/xml' );
1587                 header( 'Cache-control: no-cache' );
1588                 # FIXME
1589                 echo $this->getPreviewText( );
1590                 /* To not shake screen up and down between preview and live-preview */
1591                 echo "<br style=\"clear:both;\" />\n";
1592         }
1593
1594
1595         /**
1596          * Get a diff between the current contents of the edit box and the
1597          * version of the page we're editing from.
1598          *
1599          * If this is a section edit, we'll replace the section as for final
1600          * save and then make a comparison.
1601          *
1602          * @return string HTML
1603          */
1604         function getDiff() {
1605                 require_once( 'DifferenceEngine.php' );
1606                 $oldtext = $this->mArticle->fetchContent();
1607                 $newtext = $this->mArticle->replaceSection(
1608                         $this->section, $this->textbox1, $this->summary, $this->edittime );
1609                 $oldtitle = wfMsg( 'currentrev' );
1610                 $newtitle = wfMsg( 'yourtext' );
1611                 if ( $oldtext !== false  || $newtext != '' ) {
1612                         $de = new DifferenceEngine( $this->mTitle );
1613                         $de->setText( $oldtext, $newtext );
1614                         $difftext = $de->getDiff( $oldtitle, $newtitle );
1615                 } else {
1616                         $difftext = '';
1617                 }
1618
1619                 return '<div id="wikiDiff">' . $difftext . '</div>';
1620         }
1621
1622         /**
1623          * Filter an input field through a Unicode de-armoring process if it
1624          * came from an old browser with known broken Unicode editing issues.
1625          *
1626          * @param WebRequest $request
1627          * @param string $field
1628          * @return string
1629          * @private
1630          */
1631         function safeUnicodeInput( $request, $field ) {
1632                 $text = rtrim( $request->getText( $field ) );
1633                 return $request->getBool( 'safemode' )
1634                         ? $this->unmakesafe( $text )
1635                         : $text;
1636         }
1637
1638         /**
1639          * Filter an output field through a Unicode armoring process if it is
1640          * going to an old browser with known broken Unicode editing issues.
1641          *
1642          * @param string $text
1643          * @return string
1644          * @private
1645          */
1646         function safeUnicodeOutput( $text ) {
1647                 global $wgContLang;
1648                 $codedText = $wgContLang->recodeForEdit( $text );
1649                 return $this->checkUnicodeCompliantBrowser()
1650                         ? $codedText
1651                         : $this->makesafe( $codedText );
1652         }
1653
1654         /**
1655          * A number of web browsers are known to corrupt non-ASCII characters
1656          * in a UTF-8 text editing environment. To protect against this,
1657          * detected browsers will be served an armored version of the text,
1658          * with non-ASCII chars converted to numeric HTML character references.
1659          *
1660          * Preexisting such character references will have a 0 added to them
1661          * to ensure that round-trips do not alter the original data.
1662          *
1663          * @param string $invalue
1664          * @return string
1665          * @private
1666          */
1667         function makesafe( $invalue ) {
1668                 // Armor existing references for reversability.
1669                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
1670
1671                 $bytesleft = 0;
1672                 $result = "";
1673                 $working = 0;
1674                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
1675                         $bytevalue = ord( $invalue{$i} );
1676                         if( $bytevalue <= 0x7F ) { //0xxx xxxx
1677                                 $result .= chr( $bytevalue );
1678                                 $bytesleft = 0;
1679                         } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
1680                                 $working = $working << 6;
1681                                 $working += ($bytevalue & 0x3F);
1682                                 $bytesleft--;
1683                                 if( $bytesleft <= 0 ) {
1684                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
1685                                 }
1686                         } elseif( $bytevalue <= 0xDF ) { //110x xxxx
1687                                 $working = $bytevalue & 0x1F;
1688                                 $bytesleft = 1;
1689                         } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
1690                                 $working = $bytevalue & 0x0F;
1691                                 $bytesleft = 2;
1692                         } else { //1111 0xxx
1693                                 $working = $bytevalue & 0x07;
1694                                 $bytesleft = 3;
1695                         }
1696                 }
1697                 return $result;
1698         }
1699
1700         /**
1701          * Reverse the previously applied transliteration of non-ASCII characters
1702          * back to UTF-8. Used to protect data from corruption by broken web browsers
1703          * as listed in $wgBrowserBlackList.
1704          *
1705          * @param string $invalue
1706          * @return string
1707          * @private
1708          */
1709         function unmakesafe( $invalue ) {
1710                 $result = "";
1711                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
1712                         if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
1713                                 $i += 3;
1714                                 $hexstring = "";
1715                                 do {
1716                                         $hexstring .= $invalue{$i};
1717                                         $i++;
1718                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
1719
1720                                 // Do some sanity checks. These aren't needed for reversability,
1721                                 // but should help keep the breakage down if the editor
1722                                 // breaks one of the entities whilst editing.
1723                                 if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
1724                                         $codepoint = hexdec($hexstring);
1725                                         $result .= codepointToUtf8( $codepoint );
1726                                 } else {
1727                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
1728                                 }
1729                         } else {
1730                                 $result .= substr( $invalue, $i, 1 );
1731                         }
1732                 }
1733                 // reverse the transform that we made for reversability reasons.
1734                 return strtr( $result, array( "&#x0" => "&#x" ) );
1735         }
1736
1737         function noCreatePermission() {
1738                 global $wgOut;
1739                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
1740                 $wgOut->addWikiText( wfMsg( 'nocreatetext' ) );
1741         }
1742
1743 }
1744
1745 ?>