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