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
  21         # Form values
  22         var $save = false, $preview = false;
  23         var $minoredit = false, $watchthis = false;
  24         var $textbox1 = '', $textbox2 = '', $summary = '';
  25         var $edittime = '', $section = '';
  26         var $oldid = 0;
  27
  28         /**
  29          * @todo document
  30          * @param $article
  31          */
  32         function EditPage( $article ) {
  33                 $this->mArticle =& $article;
  34                 global $wgTitle;
  35                 $this->mTitle =& $wgTitle;
  36         }
  37
  38         /**
  39          * This is the function that extracts metadata from the article body on the first view.
  40          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
  41          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
  42          */
  43         function extractMetaDataFromArticle ()
  44         {
  45                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
  46                 $this->mMetaData = "" ;
  47                 if ( !$wgUseMetadataEdit ) return ;
  48                 if ( $wgMetadataWhitelist == "" ) return ;
  49                 $s = "" ;
  50                 $t = $this->mArticle->getContent ( true ) ;
  51
  52                 # MISSING : <nowiki> filtering
  53
  54                 # Categories and language links
  55                 $t = explode ( "\n" , $t ) ;
  56                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
  57                 $cat = $ll = array() ;
  58                 foreach ( $t AS $key => $x )
  59                 {
  60                         $y = trim ( strtolower ( $x ) ) ;
  61                         while ( substr ( $y , 0 , 2 ) == "[[" )
  62                         {
  63                                 $y = explode ( "]]" , trim ( $x ) ) ;
  64                                 $first = array_shift ( $y ) ;
  65                                 $first = explode ( ":" , $first ) ;
  66                                 $ns = array_shift ( $first ) ;
  67                                 $ns = trim ( str_replace ( "[" , "" , $ns ) ) ;
  68                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
  69                                 {
  70                                         $add = "[[" . $ns . ":" . implode ( ":" , $first ) . "]]" ;
  71                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
  72                                         else $ll[] = $add ;
  73                                         $x = implode ( "]]" , $y ) ;
  74                                         $t[$key] = $x ;
  75                                         $y = trim ( strtolower ( $x ) ) ;
  76                                 }
  77                         }
  78                 }
  79                 if ( count ( $cat ) ) $s .= implode ( " " , $cat ) . "\n" ;
  80                 if ( count ( $ll ) ) $s .= implode ( " " , $ll ) . "\n" ;
  81                 $t = implode ( "\n" , $t ) ;
  82
  83                 # Load whitelist
  84                 $sat = array () ; # stand-alone-templates; must be lowercase
  85                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
  86                 $wl_article = new Article ( $wl_title ) ;
  87                 $wl = explode ( "\n" , $wl_article->getContent(true) ) ;
  88                 foreach ( $wl AS $x )
  89                 {
  90                         $isentry = false ;
  91                         $x = trim ( $x ) ;
  92                         while ( substr ( $x , 0 , 1 ) == "*" )
  93                         {
  94                                 $isentry = true ;
  95                                 $x = trim ( substr ( $x , 1 ) ) ;
  96                         }
  97                         if ( $isentry )
  98                         {
  99                                 $sat[] = strtolower ( $x ) ;
 100                         }
 101
 102                 }
 103
 104                 # Templates, but only some
 105                 $t = explode ( "{{" , $t ) ;
 106                 $tl = array () ;
 107                 foreach ( $t AS $key => $x )
 108                 {
 109                         $y = explode ( "}}" , $x , 2 ) ;
 110                         if ( count ( $y ) == 2 )
 111                         {
 112                                 $z = $y[0] ;
 113                                 $z = explode ( "|" , $z ) ;
 114                                 $tn = array_shift ( $z ) ;
 115                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 116                                 {
 117                                         $tl[] = "{{" . $y[0] . "}}" ;
 118                                         $t[$key] = $y[1] ;
 119                                         $y = explode ( "}}" , $y[1] , 2 ) ;
 120                                 }
 121                                 else $t[$key] = "{{" . $x ;
 122                         }
 123                         else if ( $key != 0 ) $t[$key] = "{{" . $x ;
 124                         else $t[$key] = $x ;
 125                 }
 126                 if ( count ( $tl ) ) $s .= implode ( " " , $tl ) ;
 127                 $t = implode ( "" , $t ) ;
 128
 129                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 130                 $this->mArticle->mContent = $t ;
 131                 $this->mMetaData = $s ;
 132         }
 133
 134         /**
 135          * This is the function that gets called for "action=edit".
 136          */
 137         function edit() {
 138                 global $wgOut, $wgUser, $wgWhitelistEdit, $wgRequest;
 139                 // this is not an article
 140                 $wgOut->setArticleFlag(false);
 141
 142                 $this->importFormData( $wgRequest );
 143
 144                 if( $this->live ) {
 145                         $this->livePreview();
 146                         return;
 147                 }
 148
 149                 if ( ! $this->mTitle->userCanEdit() ) {
 150                         $wgOut->readOnlyPage( $this->mArticle->getContent( true ), true );
 151                         return;
 152                 }
 153                 if ( !$this->preview && $wgUser->isBlocked( !$this->save ) ) {
 154                         # When previewing, don't check blocked state - will get caught at save time.
 155                         # Also, check when starting edition is done against slave to improve performance.
 156                         $this->blockedIPpage();
 157                         return;
 158                 }
 159                 if ( $wgUser->isAnon() && $wgWhitelistEdit ) {
 160                         $this->userNotLoggedInPage();
 161                         return;
 162                 }
 163                 if ( wfReadOnly() ) {
 164                         if( $this->save || $this->preview ) {
 165                                 $this->editForm( 'preview' );
 166                         } else {
 167                                 $wgOut->readOnlyPage( $this->mArticle->getContent( true ) );
 168                         }
 169                         return;
 170                 }
 171                 if ( $this->save ) {
 172                         $this->editForm( 'save' );
 173                 } else if ( $this->preview ) {
 174                         $this->editForm( 'preview' );
 175                 } else { # First time through
 176                         if( $wgUser->getOption('previewonfirst') ) {
 177                                 $this->editForm( 'preview', true );
 178                         } else {
 179                                 $this->extractMetaDataFromArticle () ;
 180                                 $this->editForm( 'initial', true );
 181                         }
 182                 }
 183         }
 184
 185         /**
 186          * @todo document
 187          */
 188         function importFormData( &$request ) {
 189                 if( $request->wasPosted() ) {
 190                         # These fields need to be checked for encoding.
 191                         # Also remove trailing whitespace, but don't remove _initial_
 192                         # whitespace from the text boxes. This may be significant formatting.
 193                         $this->textbox1  = rtrim( $request->getText( 'wpTextbox1' ) );
 194                         $this->textbox2  = rtrim( $request->getText( 'wpTextbox2' ) );
 195                         $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
 196                         $this->summary   =  trim( $request->getText( 'wpSummary'  ) );
 197
 198                         $this->edittime = $request->getVal( 'wpEdittime' );
 199                         if( is_null( $this->edittime ) ) {
 200                                 # If the form is incomplete, force to preview.
 201                                 $this->preview  = true;
 202                         } else {
 203                                 if( $this->tokenOk( $request ) ) {
 204                                         # Some browsers will not report any submit button
 205                                         # if the user hits enter in the comment box.
 206                                         # The unmarked state will be assumed to be a save,
 207                                         # if the form seems otherwise complete.
 208                                         $this->preview = $request->getCheck( 'wpPreview' );
 209                                 } else {
 210                                         # Page might be a hack attempt posted from
 211                                         # an external site. Preview instead of saving.
 212                                         $this->preview = true;
 213                                 }
 214                         }
 215                         $this->save    = !$this->preview;
 216                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 217                                 $this->edittime = null;
 218                         }
 219
 220                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 221                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 222                 } else {
 223                         # Not a posted form? Start with nothing.
 224                         $this->textbox1  = '';
 225                         $this->textbox2  = '';
 226                         $this->mMetaData = '';
 227                         $this->summary   = '';
 228                         $this->edittime  = '';
 229                         $this->preview   = false;
 230                         $this->save      = false;
 231                         $this->minoredit = false;
 232                         $this->watchthis = false;
 233                 }
 234
 235                 $this->oldid = $request->getInt( 'oldid' );
 236
 237                 # Section edit can come from either the form or a link
 238                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 239
 240                 $this->live = $request->getCheck( 'live' );
 241         }
 242
 243         /**
 244          * Make sure the form isn't faking a user's credentials.
 245          *
 246          * @param WebRequest $request
 247          * @return bool
 248          * @access private
 249          */
 250         function tokenOk( &$request ) {
 251                 global $wgUser;
 252                 if( $wgUser->isAnon() ) {
 253                         # Anonymous users may not have a session
 254                         # open. Don't tokenize.
 255                         return true;
 256                 } else {
 257                         return $wgUser->matchEditToken( $request->getVal( 'wpEditToken' ) );
 258                 }
 259         }
 260
 261         function submit() {
 262                 $this->edit();
 263         }
 264
 265         /**
 266          * The edit form is self-submitting, so that when things like
 267          * preview and edit conflicts occur, we get the same form back
 268          * with the extra stuff added.  Only when the final submission
 269          * is made and all is well do we actually save and redirect to
 270          * the newly-edited page.
 271          *
 272          * @param string $formtype Type of form either : save, initial or preview
 273          * @param bool $firsttime True to load form data from db
 274          */
 275         function editForm( $formtype, $firsttime = false ) {
 276                 global $wgOut, $wgUser;
 277                 global $wgLang, $wgContLang, $wgParser, $wgTitle;
 278                 global $wgAllowAnonymousMinor;
 279                 global $wgWhitelistEdit;
 280                 global $wgSpamRegex, $wgFilterCallback;
 281                 global $wgUseLatin1;
 282
 283                 $sk = $wgUser->getSkin();
 284                 $isConflict = false;
 285                 // css / js subpages of user pages get a special treatment
 286                 $isCssJsSubpage = $wgTitle->isCssJsSubpage();
 287
 288
 289                 if(!$this->mTitle->getArticleID()) { # new article
 290                         $wgOut->addWikiText(wfmsg('newarticletext'));
 291                 }
 292
 293                 if( $this->mTitle->isTalkPage() ) {
 294                         $wgOut->addWikiText(wfmsg('talkpagetext'));
 295                 }
 296
 297                 # Attempt submission here.  This will check for edit conflicts,
 298                 # and redundantly check for locked database, blocked IPs, etc.
 299                 # that edit() already checked just in case someone tries to sneak
 300                 # in the back door with a hand-edited submission URL.
 301
 302                 if ( 'save' == $formtype ) {
 303                         # Reintegrate metadata
 304                         if ( $this->mMetaData != "" ) $this->textbox1 .= "\n" . $this->mMetaData ;
 305                         $this->mMetaData = "" ;
 306
 307                         # Check for spam
 308                         if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 309                                 $this->spamPage ( $matches[0] );
 310                                 return;
 311                         }
 312                         if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 313                                 # Error messages or other handling should be performed by the filter function
 314                                 return;
 315                         }
 316                         if ( $wgUser->isBlocked( false ) ) {
 317                                 # Check block state against master, thus 'false'.
 318                                 $this->blockedIPpage();
 319                                 return;
 320                         }
 321                         if ( $wgUser->isAnon() && $wgWhitelistEdit ) {
 322                                 $this->userNotLoggedInPage();
 323                                 return;
 324                         }
 325                         if ( wfReadOnly() ) {
 326                                 $wgOut->readOnlyPage();
 327                                 return;
 328                         }
 329
 330                         # If article is new, insert it.
 331                         $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 332                         if ( 0 == $aid ) {
 333                                 # Don't save a new article if it's blank.
 334                                 if ( ( '' == $this->textbox1 ) ||
 335                                   ( wfMsg( 'newarticletext' ) == $this->textbox1 ) ) {
 336                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 337                                         return;
 338                                 }
 339                                 if (wfRunHooks('ArticleSave', array(&$this->mArticle, &$wgUser, &$this->textbox1,
 340                                                            &$this->summary, &$this->minoredit, &$this->watchthis, NULL)))
 341                                 {
 342                                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 343                                                                                                            $this->minoredit, $this->watchthis );
 344                                         wfRunHooks('ArticleSaveComplete', array(&$this->mArticle, &$wgUser, $this->textbox1,
 345                                                                                                                         $this->summary, $this->minoredit,
 346                                                                                                                         $this->watchthis, NULL));
 347                                 }
 348                                 return;
 349                         }
 350
 351                         # Article exists. Check for edit conflict.
 352
 353                         $this->mArticle->clear(); # Force reload of dates, etc.
 354                         $this->mArticle->forUpdate( true ); # Lock the article
 355
 356                         if( ( $this->section != 'new' ) &&
 357                                 ($this->mArticle->getTimestamp() != $this->edittime ) ) {
 358                                 $isConflict = true;
 359                         }
 360                         $userid = $wgUser->getID();
 361
 362                         if ( $isConflict) {
 363                                 $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 364                                         $this->section, $this->textbox1, $this->summary, $this->edittime);
 365                         }
 366                         else {
 367                                 $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 368                                         $this->section, $this->textbox1, $this->summary);
 369                         }
 370                         # Suppress edit conflict with self
 371
 372                         if ( ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 373                                 $isConflict = false;
 374                         } else {
 375                                 # switch from section editing to normal editing in edit conflict
 376                                 if($isConflict) {
 377                                         # Attempt merge
 378                                         if( $this->mergeChangesInto( $text ) ){
 379                                                 // Successful merge! Maybe we should tell the user the good news?
 380                                                 $isConflict = false;
 381                                         } else {
 382                                                 $this->section = '';
 383                                                 $this->textbox1 = $text;
 384                                         }
 385                                 }
 386                         }
 387                         if ( ! $isConflict ) {
 388                                 # All's well
 389                                 $sectionanchor = '';
 390                                 if( $this->section == 'new' ) {
 391                                         if( $this->summary != '' ) {
 392                                                 $sectionanchor = $this->sectionAnchor( $this->summary );
 393                                         }
 394                                 } elseif( $this->section != '' ) {
 395                                         # Try to get a section anchor from the section source, redirect to edited section if header found
 396                                         # XXX: might be better to integrate this into Article::getTextOfLastEditWithSectionReplacedOrAdded
 397                                         # for duplicate heading checking and maybe parsing
 398                                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 399                                         # we can't deal with anchors, includes, html etc in the header for now,
 400                                         # headline would need to be parsed to improve this
 401                                         #if($hasmatch and strlen($matches[2]) > 0 and !preg_match( "/[\\['{<>]/", $matches[2])) {
 402                                         if($hasmatch and strlen($matches[2]) > 0) {
 403                                                 $sectionanchor = $this->sectionAnchor( $matches[2] );
 404                                         }
 405                                 }
 406
 407                                 if (wfRunHooks('ArticleSave', array(&$this->mArticle, &$wgUser, &$text,
 408                                                                                                         &$this->summary, &$this->minoredit,
 409                                                                                                         &$this->watchthis, &$sectionanchor)))
 410                                 {
 411                                         # update the article here
 412                                         if($this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 413                                                                                                            $this->watchthis, '', $sectionanchor ))
 414                                         {
 415                                                 wfRunHooks('ArticleSaveComplete', array(&$this->mArticle, &$wgUser, $text,
 416                                                                                                                                 $this->summary, $this->minoredit,
 417                                                                                                                                 $this->watchthis, $sectionanchor));
 418                                                 return;
 419                                         }
 420                                         else
 421                                           $isConflict = true;
 422                                 }
 423                         }
 424                 }
 425                 # First time through: get contents, set time for conflict
 426                 # checking, etc.
 427
 428                 if ( 'initial' == $formtype || $firsttime ) {
 429                         $this->edittime = $this->mArticle->getTimestamp();
 430                         $this->textbox1 = $this->mArticle->getContent( true );
 431                         $this->summary = '';
 432                         $this->proxyCheck();
 433                 }
 434                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 435
 436                 # Enabled article-related sidebar, toplinks, etc.
 437                 $wgOut->setArticleRelated( true );
 438
 439                 if ( $isConflict ) {
 440                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 441                         $wgOut->setPageTitle( $s );
 442                         $wgOut->addHTML( wfMsg( 'explainconflict' ) );
 443
 444                         $this->textbox2 = $this->textbox1;
 445                         $this->textbox1 = $this->mArticle->getContent( true );
 446                         $this->edittime = $this->mArticle->getTimestamp();
 447                 } else {
 448
 449                         if( $this->section != '' ) {
 450                                 if( $this->section == 'new' ) {
 451                                         $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
 452                                 } else {
 453                                         $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
 454                                 }
 455                                 if(!$this->preview) {
 456                                         preg_match( "/^(=+)(.+)\\1/mi",
 457                                                 $this->textbox1,
 458                                                 $matches );
 459                                         if( !empty( $matches[2] ) ) {
 460                                                 $this->summary = "/* ". trim($matches[2])." */ ";
 461                                         }
 462                                 }
 463                         } else {
 464                                 $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 465                         }
 466                         $wgOut->setPageTitle( $s );
 467                         if ( !$wgUseLatin1 && !$this->checkUnicodeCompliantBrowser() ) {
 468                                 $this->mArticle->setOldSubtitle();
 469                                 $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
 470                         }
 471                         if ( $this->oldid ) {
 472                                 $this->mArticle->setOldSubtitle();
 473                                 $wgOut->addHTML( wfMsg( 'editingold' ) );
 474                         }
 475                 }
 476
 477                 if( wfReadOnly() ) {
 478                         $wgOut->addHTML( '<strong>' .
 479                         wfMsg( 'readonlywarning' ) .
 480                         "</strong>" );
 481                 } else if ( $isCssJsSubpage and 'preview' != $formtype) {
 482                         $wgOut->addHTML( wfMsg( 'usercssjsyoucanpreview' ));
 483                 }
 484                 if( $this->mTitle->isProtected('edit') ) {
 485                         $wgOut->addHTML( '<strong>' . wfMsg( 'protectedpagewarning' ) .
 486                           "</strong><br />\n" );
 487                 }
 488
 489                 $kblength = (int)(strlen( $this->textbox1 ) / 1024);
 490                 if( $kblength > 29 ) {
 491                         $wgOut->addHTML( '<strong>' .
 492                                 wfMsg( 'longpagewarning', $wgLang->formatNum( $kblength ) )
 493                                 . '</strong>' );
 494                 }
 495
 496                 $rows = $wgUser->getOption( 'rows' );
 497                 $cols = $wgUser->getOption( 'cols' );
 498
 499                 $ew = $wgUser->getOption( 'editwidth' );
 500                 if ( $ew ) $ew = " style=\"width:100%\"";
 501                 else $ew = '';
 502
 503                 $q = 'action=submit';
 504                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 505                 $action = $this->mTitle->escapeLocalURL( $q );
 506
 507                 $summary = wfMsg('summary');
 508                 $subject = wfMsg('subject');
 509                 $minor   = wfMsg('minoredit');
 510                 $watchthis = wfMsg ('watchthis');
 511                 $save = wfMsg('savearticle');
 512                 $prev = wfMsg('showpreview');
 513
 514                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
 515                                 wfMsg('cancel') );
 516                 $edithelpurl = $sk->makeUrl( wfMsg( 'edithelppage' ));
 517                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
 518                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
 519                         htmlspecialchars( wfMsg( 'newwindow' ) );
 520
 521                 global $wgRightsText;
 522                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
 523                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
 524                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
 525                                 $wgRightsText ) . "\n</div>";
 526
 527                 if( $wgUser->getOption('showtoolbar') and !$isCssJsSubpage ) {
 528                         # prepare toolbar for edit buttons
 529                         $toolbar = $this->getEditToolbar();
 530                 } else {
 531                         $toolbar = '';
 532                 }
 533
 534                 // activate checkboxes if user wants them to be always active
 535                 if( !$this->preview ) {
 536                         if( $wgUser->getOption( 'watchdefault' ) ) $this->watchthis = true;
 537                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
 538
 539                         // activate checkbox also if user is already watching the page,
 540                         // require wpWatchthis to be unset so that second condition is not
 541                         // checked unnecessarily
 542                         if( !$this->watchthis && $this->mTitle->userIsWatching() ) $this->watchthis = true;
 543                 }
 544
 545                 $minoredithtml = '';
 546
 547                 if ( $wgUser->isLoggedIn() || $wgAllowAnonymousMinor ) {
 548                         $minoredithtml =
 549                                 "<input tabindex='3' type='checkbox' value='1' name='wpMinoredit'".($this->minoredit?" checked='checked'":"").
 550                                 " accesskey='".wfMsg('accesskey-minoredit')."' id='wpMinoredit' />".
 551                                 "<label for='wpMinoredit' title='".wfMsg('tooltip-minoredit')."'>{$minor}</label>";
 552                 }
 553
 554                 $watchhtml = '';
 555
 556                 if ( $wgUser->isLoggedIn() ) {
 557                         $watchhtml = "<input tabindex='4' type='checkbox' name='wpWatchthis'".($this->watchthis?" checked='checked'":"").
 558                                 " accesskey='".wfMsg('accesskey-watch')."' id='wpWatchthis'  />".
 559                                 "<label for='wpWatchthis' title='".wfMsg('tooltip-watch')."'>{$watchthis}</label>";
 560                 }
 561
 562                 $checkboxhtml = $minoredithtml . $watchhtml . '<br />';
 563
 564                 $wgOut->addHTML( '<div id="wikiPreview">' );
 565                 if ( 'preview' == $formtype) {
 566                         $previewOutput = $this->getPreviewText( $isConflict, $isCssJsSubpage );
 567                         if( $wgUser->getOption('previewontop' ) ) {
 568                                 $wgOut->addHTML( $previewOutput );
 569                                 $wgOut->addHTML( "<br style=\"clear:both;\" />\n" );
 570                         }
 571                 }
 572                 $wgOut->addHTML( '</div>' );
 573
 574                 # if this is a comment, show a subject line at the top, which is also the edit summary.
 575                 # Otherwise, show a summary field at the bottom
 576                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
 577                         if( $this->section == 'new' ) {
 578                                 $commentsubject="{$subject}: <input tabindex='1' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 579                                 $editsummary = '';
 580                         } else {
 581                                 $commentsubject = '';
 582                                 $editsummary="{$summary}: <input tabindex='3' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 583                         }
 584
 585                 if( !$this->preview ) {
 586                 # Don't select the edit box on preview; this interferes with seeing what's going on.
 587                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
 588                 }
 589                 # Prepare a list of templates used by this page
 590                 $templates = '';
 591                 $id = $this->mTitle->getArticleID();
 592                 if ( 0 !== $id ) {
 593                         $db =& wfGetDB( DB_SLAVE );
 594                         $page = $db->tableName( 'page' );
 595                         $links = $db->tableName( 'links' );
 596                         $sql = "SELECT page_namespace,page_title,page_id ".
 597                                 "FROM $page,$links WHERE l_to=page_id AND l_from={$id} and page_namespace=".NS_TEMPLATE;
 598                         $res = $db->query( $sql, "EditPage::editform" );
 599                         if ( false !== $res ) {
 600                                 if ( $db->numRows( $res ) ) {
 601                                         $templates = '<br />'. wfMsg( 'templatesused' ) . '<ul>';
 602                                         while ( $row = $db->fetchObject( $res ) ) {
 603                                                 if ( $titleObj = Title::makeTitle( $row->page_namespace, $row->page_title ) ) {
 604                                                         $templates .= '<li>' . $sk->makeLinkObj( $titleObj ) . '</li>';
 605                                                 }
 606                                         }
 607                                         $templates .= '</ul>';
 608                                 }
 609                                 $db->freeResult( $res );
 610                         }
 611                 }
 612
 613                 global $wgLivePreview, $wgStylePath;
 614                 /**
 615                  * Live Preview lets us fetch rendered preview page content and
 616                  * add it to the page without refreshing the whole page.
 617                  * Set up the button for it; if not supported by the browser
 618                  * it will fall through to the normal form submission method.
 619                  */
 620                 if( $wgLivePreview ) {
 621                         $wgOut->addHTML( '<script type="text/javascript" src="' .
 622                                 htmlspecialchars( $wgStylePath . '/common/preview.js' ) .
 623                                 '"></script>' . "\n" );
 624                         $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
 625                         $liveOnclick = 'onclick="return !livePreview('.
 626                                 'getElementById(\'wikiPreview\'),' .
 627                                 'editform.wpTextbox1.value,' .
 628                                 htmlspecialchars( '"' . $liveAction . '"' ) . ')"';
 629                 } else {
 630                         $liveOnclick = '';
 631                 }
 632
 633                 global $wgUseMetadataEdit ;
 634                 if ( $wgUseMetadataEdit )
 635                 {
 636                         $metadata = $this->mMetaData ;
 637                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
 638                         $helppage = Title::newFromText ( wfmsg("metadata_page") ) ;
 639                         $top = str_replace ( "$1" , $helppage->getInternalURL() , wfmsg("metadata") ) ;
 640                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
 641                 }
 642                 else $metadata = "" ;
 643
 644
 645                 $wgOut->addHTML( <<<END
 646 {$toolbar}
 647 <form id="editform" name="editform" method="post" action="$action"
 648 enctype="multipart/form-data">
 649 {$commentsubject}
 650 <textarea tabindex='1' accesskey="," name="wpTextbox1" rows='{$rows}'
 651 cols='{$cols}'{$ew}>
 652 END
 653 . htmlspecialchars( $wgContLang->recodeForEdit( $this->textbox1 ) ) .
 654 "
 655 </textarea>
 656 {$metadata}
 657 <br />{$editsummary}
 658 {$checkboxhtml}
 659 <input tabindex='5' id='wpSave' type='submit' value=\"{$save}\" name=\"wpSave\" accesskey=\"".wfMsg('accesskey-save')."\"".
 660 " title=\"".wfMsg('tooltip-save')."\"/>
 661 <input tabindex='6' id='wpPreview' type='submit' $liveOnclick value=\"{$prev}\" name=\"wpPreview\" accesskey=\"".wfMsg('accesskey-preview')."\"".
 662 " title=\"".wfMsg('tooltip-preview')."\"/>
 663 <em>{$cancel}</em> | <em>{$edithelp}</em>{$templates}" );
 664                 $wgOut->addWikiText( $copywarn );
 665                 $wgOut->addHTML( "
 666 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
 667 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n" );
 668
 669                 if ( $wgUser->isLoggedIn() ) {
 670                         /**
 671                          * To make it harder for someone to slip a user a page
 672                          * which submits an edit form to the wiki without their
 673                          * knowledge, a random token is associated with the login
 674                          * session. If it's not passed back with the submission,
 675                          * we won't save the page, or render user JavaScript and
 676                          * CSS previews.
 677                          */
 678                         $token = htmlspecialchars( $wgUser->editToken() );
 679                         $wgOut->addHTML( "
 680 <input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
 681                 }
 682
 683
 684                 if ( $isConflict ) {
 685                         require_once( "DifferenceEngine.php" );
 686                         $wgOut->addHTML( "<h2>" . wfMsg( "yourdiff" ) . "</h2>\n" );
 687                         DifferenceEngine::showDiff( $this->textbox2, $this->textbox1,
 688                           wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 689
 690                         $wgOut->addHTML( "<h2>" . wfMsg( "yourtext" ) . "</h2>
 691 <textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
 692 . htmlspecialchars( $wgContLang->recodeForEdit( $this->textbox2 ) ) .
 693 "
 694 </textarea>" );
 695                 }
 696                 $wgOut->addHTML( "</form>\n" );
 697                 if($formtype =="preview" && !$wgUser->getOption("previewontop")) {
 698                         $wgOut->addHTML('<div id="wikiPreview">' . $previewOutput . '</div>');
 699                 }
 700         }
 701
 702         function getPreviewText( $isConflict, $isCssJsSubpage ) {
 703                 global $wgOut, $wgUser, $wgTitle, $wgParser;
 704                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
 705                         "<p class='previewnote'>" . htmlspecialchars( wfMsg( 'previewnote' ) ) . "</p>\n";
 706                 if ( $isConflict ) {
 707                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) .
 708                                 "</h2>\n";
 709                 }
 710
 711                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 712                 $parserOptions->setEditSection( false );
 713                 $parserOptions->setEditSectionOnRightClick( false );
 714
 715                 # don't parse user css/js, show message about preview
 716                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
 717
 718                 if ( $isCssJsSubpage ) {
 719                         if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
 720                                 $previewtext = wfMsg('usercsspreview');
 721                         } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
 722                                 $previewtext = wfMsg('userjspreview');
 723                         }
 724                         $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
 725                         $wgOut->addHTML( $parserOutput->mText );
 726                         return $previewhead;
 727                 } else {
 728                         # if user want to see preview when he edit an article
 729                         if( $wgUser->getOption('previewonfirst') and ($this->textbox1 == '')) {
 730                                 $this->textbox1 = $this->mArticle->getContent(true);
 731                         }
 732
 733                         $toparse = $this->textbox1 ;
 734                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
 735
 736                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
 737                                         $wgTitle, $parserOptions );
 738
 739                         $previewHTML = $parserOutput->mText;
 740                         $wgOut->addCategoryLinks($parserOutput->getCategoryLinks());
 741                         $wgOut->addLanguageLinks($parserOutput->getLanguageLinks());
 742                         return $previewhead . $previewHTML;
 743                 }
 744         }
 745
 746         /**
 747          * @todo document
 748          */
 749         function blockedIPpage() {
 750                 global $wgOut, $wgUser, $wgContLang, $wgIP;
 751
 752                 $wgOut->setPageTitle( wfMsg( 'blockedtitle' ) );
 753                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 754                 $wgOut->setArticleRelated( false );
 755
 756                 $id = $wgUser->blockedBy();
 757                 $reason = $wgUser->blockedFor();
 758                 $ip = $wgIP;
 759
 760                 if ( is_numeric( $id ) ) {
 761                         $name = User::whoIs( $id );
 762                 } else {
 763                         $name = $id;
 764                 }
 765                 $link = '[[' . $wgContLang->getNsText( NS_USER ) .
 766                   ":{$name}|{$name}]]";
 767
 768                 $wgOut->addWikiText( wfMsg( 'blockedtext', $link, $reason, $ip, $name ) );
 769                 $wgOut->returnToMain( false );
 770         }
 771
 772         /**
 773          * @todo document
 774          */
 775         function userNotLoggedInPage() {
 776                 global $wgOut;
 777
 778                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
 779                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 780                 $wgOut->setArticleRelated( false );
 781
 782                 $wgOut->addWikiText( wfMsg( 'whitelistedittext' ) );
 783                 $wgOut->returnToMain( false );
 784         }
 785
 786         /**
 787          * @todo document
 788          */
 789         function spamPage ( $match = false )
 790         {
 791                 global $wgOut;
 792                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
 793                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 794                 $wgOut->setArticleRelated( false );
 795
 796                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
 797                 if ( $match ) {
 798                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
 799                 }
 800                 $wgOut->returnToMain( false );
 801         }
 802
 803         /**
 804          * Forks processes to scan the originating IP for an open proxy server
 805          * MemCached can be used to skip IPs that have already been scanned
 806          */
 807         function proxyCheck() {
 808                 global $wgBlockOpenProxies, $wgProxyPorts, $wgProxyScriptPath;
 809                 global $wgIP, $wgUseMemCached, $wgMemc, $wgDBname, $wgProxyMemcExpiry;
 810
 811                 if ( !$wgBlockOpenProxies ) {
 812                         return;
 813                 }
 814
 815                 # Get MemCached key
 816                 $skip = false;
 817                 if ( $wgUseMemCached ) {
 818                         $mcKey = $wgDBname.':proxy:ip:'.$wgIP;
 819                         $mcValue = $wgMemc->get( $mcKey );
 820                         if ( $mcValue ) {
 821                                 $skip = true;
 822                         }
 823                 }
 824
 825                 # Fork the processes
 826                 if ( !$skip ) {
 827                         $title = Title::makeTitle( NS_SPECIAL, 'Blockme' );
 828                         $iphash = md5( $wgIP . $wgProxyKey );
 829                         $url = $title->getFullURL( 'ip='.$iphash );
 830
 831                         foreach ( $wgProxyPorts as $port ) {
 832                                 $params = implode( ' ', array(
 833                                                         escapeshellarg( $wgProxyScriptPath ),
 834                                                         escapeshellarg( $wgIP ),
 835                                                         escapeshellarg( $port ),
 836                                                         escapeshellarg( $url )
 837                                                         ));
 838                                 exec( "php $params &>/dev/null &" );
 839                         }
 840                         # Set MemCached key
 841                         if ( $wgUseMemCached ) {
 842                                 $wgMemc->set( $mcKey, 1, $wgProxyMemcExpiry );
 843                         }
 844                 }
 845         }
 846
 847         /**
 848          * @access private
 849          * @todo document
 850          */
 851         function mergeChangesInto( &$text ){
 852                 $yourtext = $this->mArticle->fetchRevisionText();
 853
 854                 $db =& wfGetDB( DB_SLAVE );
 855                 $oldText = $this->mArticle->fetchRevisionText(
 856                         $db->timestamp( $this->edittime ),
 857                         'rev_timestamp' );
 858
 859                 if(wfMerge($oldText, $text, $yourtext, $result)){
 860                         $text = $result;
 861                         return true;
 862                 } else {
 863                         return false;
 864                 }
 865         }
 866
 867
 868         function checkUnicodeCompliantBrowser() {
 869                 global $wgBrowserBlackList;
 870                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
 871                 foreach ( $wgBrowserBlackList as $browser ) {
 872                         if ( preg_match($browser, $currentbrowser) ) {
 873                                 return false;
 874                         }
 875                 }
 876                 return true;
 877         }
 878
 879         /**
 880          * Format an anchor fragment as it would appear for a given section name
 881          * @param string $text
 882          * @return string
 883          * @access private
 884          */
 885         function sectionAnchor( $text ) {
 886                 global $wgInputEncoding;
 887                 $headline = do_html_entity_decode( $text, ENT_COMPAT, $wgInputEncoding );
 888                 # strip out HTML
 889                 $headline = preg_replace( '/<.*?' . '>/', '', $headline );
 890                 $headline = trim( $headline );
 891                 $sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
 892                 $replacearray = array(
 893                         '%3A' => ':',
 894                         '%' => '.'
 895                 );
 896                 return str_replace(
 897                         array_keys( $replacearray ),
 898                         array_values( $replacearray ),
 899                         $sectionanchor );
 900         }
 901
 902         /**
 903          * Shows a bulletin board style toolbar for common editing functions.
 904          * It can be disabled in the user preferences.
 905          * The necessary JavaScript code can be found in style/wikibits.js.
 906          */
 907         function getEditToolbar() {
 908                 global $wgStylePath, $wgLang, $wgMimeType;
 909
 910                 /**
 911                  * toolarray an array of arrays which each include the filename of
 912                  * the button image (without path), the opening tag, the closing tag,
 913                  * and optionally a sample text that is inserted between the two when no
 914                  * selection is highlighted.
 915                  * The tip text is shown when the user moves the mouse over the button.
 916                  *
 917                  * Already here are accesskeys (key), which are not used yet until someone
 918                  * can figure out a way to make them work in IE. However, we should make
 919                  * sure these keys are not defined on the edit page.
 920                  */
 921                 $toolarray=array(
 922                         array(  'image'=>'button_bold.png',
 923                                         'open'  =>      "\'\'\'",
 924                                         'close' =>      "\'\'\'",
 925                                         'sample'=>      wfMsg('bold_sample'),
 926                                         'tip'   =>      wfMsg('bold_tip'),
 927                                         'key'   =>      'B'
 928                                 ),
 929                         array(  'image'=>'button_italic.png',
 930                                         'open'  =>      "\'\'",
 931                                         'close' =>      "\'\'",
 932                                         'sample'=>      wfMsg('italic_sample'),
 933                                         'tip'   =>      wfMsg('italic_tip'),
 934                                         'key'   =>      'I'
 935                                 ),
 936                         array(  'image'=>'button_link.png',
 937                                         'open'  =>      '[[',
 938                                         'close' =>      ']]',
 939                                         'sample'=>      wfMsg('link_sample'),
 940                                         'tip'   =>      wfMsg('link_tip'),
 941                                         'key'   =>      'L'
 942                                 ),
 943                         array(  'image'=>'button_extlink.png',
 944                                         'open'  =>      '[',
 945                                         'close' =>      ']',
 946                                         'sample'=>      wfMsg('extlink_sample'),
 947                                         'tip'   =>      wfMsg('extlink_tip'),
 948                                         'key'   =>      'X'
 949                                 ),
 950                         array(  'image'=>'button_headline.png',
 951                                         'open'  =>      "\\n== ",
 952                                         'close' =>      " ==\\n",
 953                                         'sample'=>      wfMsg('headline_sample'),
 954                                         'tip'   =>      wfMsg('headline_tip'),
 955                                         'key'   =>      'H'
 956                                 ),
 957                         array(  'image'=>'button_image.png',
 958                                         'open'  =>      '[['.$wgLang->getNsText(NS_IMAGE).":",
 959                                         'close' =>      ']]',
 960                                         'sample'=>      wfMsg('image_sample'),
 961                                         'tip'   =>      wfMsg('image_tip'),
 962                                         'key'   =>      'D'
 963                                 ),
 964                         array(  'image' =>      'button_media.png',
 965                                         'open'  =>      '[['.$wgLang->getNsText(NS_MEDIA).':',
 966                                         'close' =>      ']]',
 967                                         'sample'=>      wfMsg('media_sample'),
 968                                         'tip'   =>      wfMsg('media_tip'),
 969                                         'key'   =>      'M'
 970                                 ),
 971                         array(  'image' =>      'button_math.png',
 972                                         'open'  =>      "\\<math\\>",
 973                                         'close' =>      "\\</math\\>",
 974                                         'sample'=>      wfMsg('math_sample'),
 975                                         'tip'   =>      wfMsg('math_tip'),
 976                                         'key'   =>      'C'
 977                                 ),
 978                         array(  'image' =>      'button_nowiki.png',
 979                                         'open'  =>      "\\<nowiki\\>",
 980                                         'close' =>      "\\</nowiki\\>",
 981                                         'sample'=>      wfMsg('nowiki_sample'),
 982                                         'tip'   =>      wfMsg('nowiki_tip'),
 983                                         'key'   =>      'N'
 984                                 ),
 985                         array(  'image' =>      'button_sig.png',
 986                                         'open'  =>      '--~~~~',
 987                                         'close' =>      '',
 988                                         'sample'=>      '',
 989                                         'tip'   =>      wfMsg('sig_tip'),
 990                                         'key'   =>      'Y'
 991                                 ),
 992                         array(  'image' =>      'button_hr.png',
 993                                         'open'  =>      "\\n----\\n",
 994                                         'close' =>      '',
 995                                         'sample'=>      '',
 996                                         'tip'   =>      wfMsg('hr_tip'),
 997                                         'key'   =>      'R'
 998                                 )
 999                 );
1000                 $toolbar ="<script type='text/javascript'>\n/*<![CDATA[*/\n";
1001
1002                 $toolbar.="document.writeln(\"<div id='toolbar'>\");\n";
1003                 foreach($toolarray as $tool) {
1004
1005                         $image=$wgStylePath.'/common/images/'.$tool['image'];
1006                         $open=$tool['open'];
1007                         $close=$tool['close'];
1008                         $sample = addslashes( $tool['sample'] );
1009
1010                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1011                         // Older browsers show a "speedtip" type message only for ALT.
1012                         // Ideally these should be different, realistically they
1013                         // probably don't need to be.
1014                         $tip = addslashes( $tool['tip'] );
1015
1016                         #$key = $tool["key"];
1017
1018                         $toolbar.="addButton('$image','$tip','$open','$close','$sample');\n";
1019                 }
1020
1021                 $toolbar.="addInfobox('" . addslashes( wfMsg( "infobox" ) ) . "','" . addslashes(wfMsg("infobox_alert")) . "');\n";
1022                 $toolbar.="document.writeln(\"</div>\");\n";
1023
1024                 $toolbar.="/*]]>*/\n</script>";
1025                 return $toolbar;
1026         }
1027
1028         /**
1029          * Output preview text only. This can be sucked into the edit page
1030          * via JavaScript, and saves the server time rendering the skin as
1031          * well as theoretically being more robust on the client (doesn't
1032          * disturb the edit box's undo history, won't eat your text on
1033          * failure, etc).
1034          *
1035          * @todo This doesn't include category or interlanguage links.
1036          *       Would need to enhance it a bit, maybe wrap them in XML
1037          *       or something... that might also require more skin
1038          *       initialization, so check whether that's a problem.
1039          */
1040         function livePreview() {
1041                 global $wgOut;
1042                 $wgOut->disable();
1043                 header( 'Content-type: text/xml' );
1044                 header( 'Cache-control: no-cache' );
1045                 # FIXME
1046                 echo $this->getPreviewText( false, false );
1047         }
1048
1049 }
1050
1051 ?>