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