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, $diff = 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                 global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
  45                 $this->mMetaData = '' ;
  46                 if ( !$wgUseMetadataEdit ) return ;
  47                 if ( $wgMetadataWhitelist == '' ) return ;
  48                 $s = '' ;
  49                 $t = $this->mArticle->getContent ( true ) ;
  50
  51                 # MISSING : <nowiki> filtering
  52
  53                 # Categories and language links
  54                 $t = explode ( "\n" , $t ) ;
  55                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
  56                 $cat = $ll = array() ;
  57                 foreach ( $t AS $key => $x )
  58                 {
  59                         $y = trim ( strtolower ( $x ) ) ;
  60                         while ( substr ( $y , 0 , 2 ) == '[[' )
  61                         {
  62                                 $y = explode ( ']]' , trim ( $x ) ) ;
  63                                 $first = array_shift ( $y ) ;
  64                                 $first = explode ( ':' , $first ) ;
  65                                 $ns = array_shift ( $first ) ;
  66                                 $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
  67                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
  68                                 {
  69                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
  70                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
  71                                         else $ll[] = $add ;
  72                                         $x = implode ( ']]' , $y ) ;
  73                                         $t[$key] = $x ;
  74                                         $y = trim ( strtolower ( $x ) ) ;
  75                                 }
  76                         }
  77                 }
  78                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
  79                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
  80                 $t = implode ( "\n" , $t ) ;
  81
  82                 # Load whitelist
  83                 $sat = array () ; # stand-alone-templates; must be lowercase
  84                 $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
  85                 $wl_article = new Article ( $wl_title ) ;
  86                 $wl = explode ( "\n" , $wl_article->getContent(true) ) ;
  87                 foreach ( $wl AS $x )
  88                 {
  89                         $isentry = false ;
  90                         $x = trim ( $x ) ;
  91                         while ( substr ( $x , 0 , 1 ) == '*' )
  92                         {
  93                                 $isentry = true ;
  94                                 $x = trim ( substr ( $x , 1 ) ) ;
  95                         }
  96                         if ( $isentry )
  97                         {
  98                                 $sat[] = strtolower ( $x ) ;
  99                         }
 100
 101                 }
 102
 103                 # Templates, but only some
 104                 $t = explode ( '{{' , $t ) ;
 105                 $tl = array () ;
 106                 foreach ( $t AS $key => $x )
 107                 {
 108                         $y = explode ( '}}' , $x , 2 ) ;
 109                         if ( count ( $y ) == 2 )
 110                         {
 111                                 $z = $y[0] ;
 112                                 $z = explode ( '|' , $z ) ;
 113                                 $tn = array_shift ( $z ) ;
 114                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
 115                                 {
 116                                         $tl[] = '{{' . $y[0] . '}}' ;
 117                                         $t[$key] = $y[1] ;
 118                                         $y = explode ( '}}' , $y[1] , 2 ) ;
 119                                 }
 120                                 else $t[$key] = '{{' . $x ;
 121                         }
 122                         else if ( $key != 0 ) $t[$key] = '{{' . $x ;
 123                         else $t[$key] = $x ;
 124                 }
 125                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
 126                 $t = implode ( '' , $t ) ;
 127
 128                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 129                 $this->mArticle->mContent = $t ;
 130                 $this->mMetaData = $s ;
 131         }
 132
 133         /**
 134          * This is the function that gets called for "action=edit".
 135          */
 136         function edit() {
 137                 global $wgOut, $wgUser, $wgRequest;
 138                 // this is not an article
 139                 $wgOut->setArticleFlag(false);
 140
 141                 $this->importFormData( $wgRequest );
 142
 143                 if( $this->live ) {
 144                         $this->livePreview();
 145                         return;
 146                 }
 147
 148                 if ( ! $this->mTitle->userCanEdit() ) {
 149                         $wgOut->readOnlyPage( $this->mArticle->getContent( true ), true );
 150                         return;
 151                 }
 152                 if ( !$this->preview && !$this->diff && $wgUser->isBlocked( !$this->save ) ) {
 153                         # When previewing, don't check blocked state - will get caught at save time.
 154                         # Also, check when starting edition is done against slave to improve performance.
 155                         $this->blockedIPpage();
 156                         return;
 157                 }
 158                 if ( !$wgUser->isAllowed('edit') ) {
 159                         if ( $wgUser->isAnon() ) {
 160                                 $this->userNotLoggedInPage();
 161                                 return;
 162                         } else {
 163                                 $wgOut->readOnlyPage( $this->mArticle->getContent( true ), true );
 164                                 return;
 165                         }
 166                 }
 167                 if ( wfReadOnly() ) {
 168                         if( $this->save || $this->preview ) {
 169                                 $this->editForm( 'preview' );
 170                         } else if ( $this->diff ) {
 171                                 $this->editForm( 'diff' );
 172                         } else {
 173                                 $wgOut->readOnlyPage( $this->mArticle->getContent( true ) );
 174                         }
 175                         return;
 176                 }
 177                 if ( $this->save ) {
 178                         $this->editForm( 'save' );
 179                 } else if ( $this->preview ) {
 180                         $this->editForm( 'preview' );
 181                 } else if ( $this->diff ) {
 182                         $this->editForm( 'diff' );
 183                 } else { # First time through
 184                         if( $wgUser->getOption('previewonfirst') ) {
 185                                 $this->editForm( 'preview', true );
 186                         } else {
 187                                 $this->extractMetaDataFromArticle () ;
 188                                 $this->editForm( 'initial', true );
 189                         }
 190                 }
 191         }
 192
 193         /**
 194          * @todo document
 195          */
 196         function importFormData( &$request ) {
 197                 if( $request->wasPosted() ) {
 198                         # These fields need to be checked for encoding.
 199                         # Also remove trailing whitespace, but don't remove _initial_
 200                         # whitespace from the text boxes. This may be significant formatting.
 201                         $this->textbox1  = rtrim( $request->getText( 'wpTextbox1' ) );
 202                         $this->textbox2  = rtrim( $request->getText( 'wpTextbox2' ) );
 203                         $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
 204                         $this->summary   =        $request->getText( 'wpSummary'  );
 205
 206                         $this->edittime = $request->getVal( 'wpEdittime' );
 207                         if( is_null( $this->edittime ) ) {
 208                                 # If the form is incomplete, force to preview.
 209                                 $this->preview  = true;
 210                         } else {
 211                                 if( $this->tokenOk( $request ) ) {
 212                                         # Some browsers will not report any submit button
 213                                         # if the user hits enter in the comment box.
 214                                         # The unmarked state will be assumed to be a save,
 215                                         # if the form seems otherwise complete.
 216                                         $this->preview = $request->getCheck( 'wpPreview' );
 217                                         $this->diff = $request->getCheck( 'wpDiff' );
 218                                 } else {
 219                                         # Page might be a hack attempt posted from
 220                                         # an external site. Preview instead of saving.
 221                                         $this->preview = true;
 222                                 }
 223                         }
 224                         $this->save    = ! ( $this->preview OR $this->diff );
 225                         if( !preg_match( '/^\d{14}$/', $this->edittime )) {
 226                                 $this->edittime = null;
 227                         }
 228
 229                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 230                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 231                 } else {
 232                         # Not a posted form? Start with nothing.
 233                         $this->textbox1  = '';
 234                         $this->textbox2  = '';
 235                         $this->mMetaData = '';
 236                         $this->summary   = '';
 237                         $this->edittime  = '';
 238                         $this->preview   = false;
 239                         $this->save      = false;
 240                         $this->diff      = false;
 241                         $this->minoredit = false;
 242                         $this->watchthis = false;
 243                 }
 244
 245                 $this->oldid = $request->getInt( 'oldid' );
 246
 247                 # Section edit can come from either the form or a link
 248                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 249
 250                 $this->live = $request->getCheck( 'live' );
 251         }
 252
 253         /**
 254          * Make sure the form isn't faking a user's credentials.
 255          *
 256          * @param WebRequest $request
 257          * @return bool
 258          * @access private
 259          */
 260         function tokenOk( &$request ) {
 261                 global $wgUser;
 262                 if( $wgUser->isAnon() ) {
 263                         # Anonymous users may not have a session
 264                         # open. Don't tokenize.
 265                         return true;
 266                 } else {
 267                         return $wgUser->matchEditToken( $request->getVal( 'wpEditToken' ) );
 268                 }
 269         }
 270
 271         function submit() {
 272                 $this->edit();
 273         }
 274
 275         /**
 276          * The edit form is self-submitting, so that when things like
 277          * preview and edit conflicts occur, we get the same form back
 278          * with the extra stuff added.  Only when the final submission
 279          * is made and all is well do we actually save and redirect to
 280          * the newly-edited page.
 281          *
 282          * @param string $formtype Type of form either : save, initial, diff or preview
 283          * @param bool $firsttime True to load form data from db
 284          */
 285         function editForm( $formtype, $firsttime = false ) {
 286                 global $wgOut, $wgUser;
 287                 global $wgLang, $wgContLang, $wgParser, $wgTitle;
 288                 global $wgAllowAnonymousMinor;
 289                 global $wgSpamRegex, $wgFilterCallback;
 290
 291                 $sk = $wgUser->getSkin();
 292                 $isConflict = false;
 293                 // css / js subpages of user pages get a special treatment
 294                 $isCssJsSubpage = $wgTitle->isCssJsSubpage();
 295
 296
 297                 if(!$this->mTitle->getArticleID()) { # new article
 298                         $wgOut->addWikiText(wfmsg('newarticletext'));
 299                 }
 300
 301                 if( $this->mTitle->isTalkPage() ) {
 302                         $wgOut->addWikiText(wfmsg('talkpagetext'));
 303                 }
 304
 305                 # Attempt submission here.  This will check for edit conflicts,
 306                 # and redundantly check for locked database, blocked IPs, etc.
 307                 # that edit() already checked just in case someone tries to sneak
 308                 # in the back door with a hand-edited submission URL.
 309
 310                 if ( 'save' == $formtype ) {
 311                         # Reintegrate metadata
 312                         if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 313                         $this->mMetaData = '' ;
 314
 315                         # Check for spam
 316                         if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 317                                 $this->spamPage ( $matches[0] );
 318                                 return;
 319                         }
 320                         if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 321                                 # Error messages or other handling should be performed by the filter function
 322                                 return;
 323                         }
 324                         if ( $wgUser->isBlocked( false ) ) {
 325                                 # Check block state against master, thus 'false'.
 326                                 $this->blockedIPpage();
 327                                 return;
 328                         }
 329
 330                         if ( !$wgUser->isAllowed('edit') ) {
 331                                 if ( $wgUser->isAnon() ) {
 332                                 $this->userNotLoggedInPage();
 333                                 return;
 334                         }
 335                                 else {
 336                                         $wgOut->readOnlyPage();
 337                                         return;
 338                                 }
 339                         }
 340
 341                         if ( wfReadOnly() ) {
 342                                 $wgOut->readOnlyPage();
 343                                 return;
 344                         }
 345                         if ( $wgUser->pingLimiter() ) {
 346                                 $wgOut->rateLimited();
 347                                 return;
 348                         }
 349
 350                         # If article is new, insert it.
 351                         $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 352                         if ( 0 == $aid ) {
 353                                 # Don't save a new article if it's blank.
 354                                 if ( ( '' == $this->textbox1 ) ||
 355                                   ( wfMsg( 'newarticletext' ) == $this->textbox1 ) ) {
 356                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 357                                         return;
 358                                 }
 359                                 if (wfRunHooks('ArticleSave', array(&$this->mArticle, &$wgUser, &$this->textbox1,
 360                                                            &$this->summary, &$this->minoredit, &$this->watchthis, NULL)))
 361                                 {
 362                                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 363                                                                                                            $this->minoredit, $this->watchthis );
 364                                         wfRunHooks('ArticleSaveComplete', array(&$this->mArticle, &$wgUser, $this->textbox1,
 365                                                                                                                         $this->summary, $this->minoredit,
 366                                                                                                                         $this->watchthis, NULL));
 367                                 }
 368                                 return;
 369                         }
 370
 371                         # Article exists. Check for edit conflict.
 372
 373                         $this->mArticle->clear(); # Force reload of dates, etc.
 374                         $this->mArticle->forUpdate( true ); # Lock the article
 375
 376                         if( ( $this->section != 'new' ) &&
 377                                 ($this->mArticle->getTimestamp() != $this->edittime ) ) {
 378                                 $isConflict = true;
 379                         }
 380                         $userid = $wgUser->getID();
 381
 382                         if ( $isConflict) {
 383                                 wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime'\n" );
 384                                 $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 385                                         $this->section, $this->textbox1, $this->summary, $this->edittime);
 386                         }
 387                         else {
 388                                 wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 389                                 $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 390                                         $this->section, $this->textbox1, $this->summary);
 391                         }
 392                         # Suppress edit conflict with self
 393
 394                         if ( ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 395                                 $isConflict = false;
 396                         } else {
 397                                 # switch from section editing to normal editing in edit conflict
 398                                 if($isConflict) {
 399                                         # Attempt merge
 400                                         if( $this->mergeChangesInto( $text ) ){
 401                                                 // Successful merge! Maybe we should tell the user the good news?
 402                                                 $isConflict = false;
 403                                         } else {
 404                                                 $this->section = '';
 405                                                 $this->textbox1 = $text;
 406                                         }
 407                                 }
 408                         }
 409                         if ( ! $isConflict ) {
 410                                 # All's well
 411                                 $sectionanchor = '';
 412                                 if( $this->section == 'new' ) {
 413                                         if( $this->summary != '' ) {
 414                                                 $sectionanchor = $this->sectionAnchor( $this->summary );
 415                                         }
 416                                 } elseif( $this->section != '' ) {
 417                                         # Try to get a section anchor from the section source, redirect to edited section if header found
 418                                         # XXX: might be better to integrate this into Article::getTextOfLastEditWithSectionReplacedOrAdded
 419                                         # for duplicate heading checking and maybe parsing
 420                                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 421                                         # we can't deal with anchors, includes, html etc in the header for now,
 422                                         # headline would need to be parsed to improve this
 423                                         #if($hasmatch and strlen($matches[2]) > 0 and !preg_match( "/[\\['{<>]/", $matches[2])) {
 424                                         if($hasmatch and strlen($matches[2]) > 0) {
 425                                                 $sectionanchor = $this->sectionAnchor( $matches[2] );
 426                                         }
 427                                 }
 428
 429                                 if (wfRunHooks('ArticleSave', array(&$this->mArticle, &$wgUser, &$text,
 430                                                                                                         &$this->summary, &$this->minoredit,
 431                                                                                                         &$this->watchthis, &$sectionanchor)))
 432                                 {
 433                                         # update the article here
 434                                         if($this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 435                                                                                                            $this->watchthis, '', $sectionanchor ))
 436                                         {
 437                                                 wfRunHooks('ArticleSaveComplete', array(&$this->mArticle, &$wgUser, $text,
 438                                                                                                                                 $this->summary, $this->minoredit,
 439                                                                                                                                 $this->watchthis, $sectionanchor));
 440                                                 return;
 441                                         }
 442                                         else
 443                                           $isConflict = true;
 444                                 }
 445                         }
 446                 }
 447                 # First time through: get contents, set time for conflict
 448                 # checking, etc.
 449
 450                 if ( 'initial' == $formtype || $firsttime ) {
 451                         $this->edittime = $this->mArticle->getTimestamp();
 452                         $this->textbox1 = $this->mArticle->getContent( true );
 453                         $this->summary = '';
 454                         $this->proxyCheck();
 455                 }
 456                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 457
 458                 # Enabled article-related sidebar, toplinks, etc.
 459                 $wgOut->setArticleRelated( true );
 460
 461                 if ( $isConflict ) {
 462                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 463                         $wgOut->setPageTitle( $s );
 464                         $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
 465
 466                         $this->textbox2 = $this->textbox1;
 467                         $this->textbox1 = $this->mArticle->getContent( true );
 468                         $this->edittime = $this->mArticle->getTimestamp();
 469                 } else {
 470
 471                         if( $this->section != '' ) {
 472                                 if( $this->section == 'new' ) {
 473                                         $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
 474                                 } else {
 475                                         $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
 476                                 }
 477                                 if(!$this->preview) {
 478                                         preg_match( "/^(=+)(.+)\\1/mi",
 479                                                 $this->textbox1,
 480                                                 $matches );
 481                                         if( !empty( $matches[2] ) ) {
 482                                                 $this->summary = "/* ". trim($matches[2])." */ ";
 483                                         }
 484                                 }
 485                         } else {
 486                                 $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 487                         }
 488                         $wgOut->setPageTitle( $s );
 489                         if ( !$this->checkUnicodeCompliantBrowser() ) {
 490                                 $this->mArticle->setOldSubtitle();
 491                                 $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
 492                         }
 493                         if ( $this->oldid ) {
 494                                 $this->mArticle->setOldSubtitle();
 495                                 $wgOut->addWikiText( wfMsg( 'editingold' ) );
 496                         }
 497                 }
 498
 499                 if( wfReadOnly() ) {
 500                         $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
 501                 } else if ( $isCssJsSubpage and 'preview' != $formtype) {
 502                         $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ));
 503                 }
 504                 if( $this->mTitle->isProtected('edit') ) {
 505                         $wgOut->addWikiText( wfMsg( 'protectedpagewarning' ) );
 506                 }
 507
 508                 $kblength = (int)(strlen( $this->textbox1 ) / 1024);
 509                 if( $kblength > 29 ) {
 510                         $wgOut->addWikiText( wfMsg( 'longpagewarning', $wgLang->formatNum( $kblength ) ) );
 511                 }
 512
 513                 $rows = $wgUser->getOption( 'rows' );
 514                 $cols = $wgUser->getOption( 'cols' );
 515
 516                 $ew = $wgUser->getOption( 'editwidth' );
 517                 if ( $ew ) $ew = " style=\"width:100%\"";
 518                 else $ew = '';
 519
 520                 $q = 'action=submit';
 521                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 522                 $action = $this->mTitle->escapeLocalURL( $q );
 523
 524                 $summary = wfMsg('summary');
 525                 $subject = wfMsg('subject');
 526                 $minor   = wfMsg('minoredit');
 527                 $watchthis = wfMsg ('watchthis');
 528                 $save = wfMsg('savearticle');
 529                 $prev = wfMsg('showpreview');
 530                 $diff = wfMsg('showdiff');
 531
 532                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
 533                                 wfMsg('cancel') );
 534                 $edithelpurl = $sk->makeInternalOrExternalUrl( wfMsg( 'edithelppage' ));
 535                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
 536                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
 537                         htmlspecialchars( wfMsg( 'newwindow' ) );
 538
 539                 global $wgRightsText;
 540                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
 541                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
 542                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
 543                                 $wgRightsText ) . "\n</div>";
 544
 545                 if( $wgUser->getOption('showtoolbar') and !$isCssJsSubpage ) {
 546                         # prepare toolbar for edit buttons
 547                         $toolbar = $this->getEditToolbar();
 548                 } else {
 549                         $toolbar = '';
 550                 }
 551
 552                 // activate checkboxes if user wants them to be always active
 553                 if( !$this->preview && !$this->diff ) {
 554                         if( $wgUser->getOption( 'watchdefault' ) ) $this->watchthis = true;
 555                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
 556
 557                         // activate checkbox also if user is already watching the page,
 558                         // require wpWatchthis to be unset so that second condition is not
 559                         // checked unnecessarily
 560                         if( !$this->watchthis && $this->mTitle->userIsWatching() ) $this->watchthis = true;
 561                 }
 562
 563                 $minoredithtml = '';
 564
 565                 if ( $wgUser->isLoggedIn() || $wgAllowAnonymousMinor ) {
 566                         $minoredithtml =
 567                                 "<input tabindex='3' type='checkbox' value='1' name='wpMinoredit'".($this->minoredit?" checked='checked'":"").
 568                                 " accesskey='".wfMsg('accesskey-minoredit')."' id='wpMinoredit' />".
 569                                 "<label for='wpMinoredit' title='".wfMsg('tooltip-minoredit')."'>{$minor}</label>";
 570                 }
 571
 572                 $watchhtml = '';
 573
 574                 if ( $wgUser->isLoggedIn() ) {
 575                         $watchhtml = "<input tabindex='4' type='checkbox' name='wpWatchthis'".($this->watchthis?" checked='checked'":"").
 576                                 " accesskey='".wfMsg('accesskey-watch')."' id='wpWatchthis'  />".
 577                                 "<label for='wpWatchthis' title='".wfMsg('tooltip-watch')."'>{$watchthis}</label>";
 578                 }
 579
 580                 $checkboxhtml = $minoredithtml . $watchhtml . '<br />';
 581
 582                 $wgOut->addHTML( '<div id="wikiPreview">' );
 583                 if ( 'preview' == $formtype) {
 584                         $previewOutput = $this->getPreviewText( $isConflict, $isCssJsSubpage );
 585                         if ( $wgUser->getOption('previewontop' ) ) {
 586                                 $wgOut->addHTML( $previewOutput );
 587                                 $wgOut->addHTML( "<br style=\"clear:both;\" />\n" );
 588                         }
 589                 }
 590                 $wgOut->addHTML( '</div>' );
 591                 if ( 'diff' == $formtype ) {
 592                         if ( $wgUser->getOption('previewontop' ) ) {
 593                                 $wgOut->addHTML( $this->getDiff() );
 594                         }
 595                 }
 596
 597
 598                 # if this is a comment, show a subject line at the top, which is also the edit summary.
 599                 # Otherwise, show a summary field at the bottom
 600                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
 601                         if( $this->section == 'new' ) {
 602                                 $commentsubject="{$subject}: <input tabindex='1' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 603                                 $editsummary = '';
 604                         } else {
 605                                 $commentsubject = '';
 606                                 $editsummary="{$summary}: <input tabindex='2' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 607                         }
 608
 609                 if( !$this->preview && !$this->diff ) {
 610                 # Don't select the edit box on preview; this interferes with seeing what's going on.
 611                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
 612                 }
 613                 # Prepare a list of templates used by this page
 614                 $templates = '';
 615                 $articleTemplates = $this->mArticle->getUsedTemplates();
 616                 if ( count( $articleTemplates ) > 0 ) {
 617                         $templates = '<br />'. wfMsg( 'templatesused' ) . '<ul>';
 618                         foreach ( $articleTemplates as $tpl ) {
 619                                 if ( $titleObj = Title::makeTitle( NS_TEMPLATE, $tpl ) ) {
 620                                         $templates .= '<li>' . $sk->makeLinkObj( $titleObj ) . '</li>';
 621                                 }
 622                         }
 623                         $templates .= '</ul>';
 624                 }
 625
 626                 global $wgLivePreview, $wgStylePath;
 627                 /**
 628                  * Live Preview lets us fetch rendered preview page content and
 629                  * add it to the page without refreshing the whole page.
 630                  * Set up the button for it; if not supported by the browser
 631                  * it will fall through to the normal form submission method.
 632                  */
 633                 if( $wgLivePreview ) {
 634                         global $wgJsMimeType;
 635                         $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
 636                                 htmlspecialchars( $wgStylePath . '/common/preview.js' ) .
 637                                 '"></script>' . "\n" );
 638                         $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
 639                         $liveOnclick = 'onclick="return !livePreview('.
 640                                 'getElementById(\'wikiPreview\'),' .
 641                                 'editform.wpTextbox1.value,' .
 642                                 htmlspecialchars( '"' . $liveAction . '"' ) . ')"';
 643                 } else {
 644                         $liveOnclick = '';
 645                 }
 646
 647                 global $wgUseMetadataEdit ;
 648                 if ( $wgUseMetadataEdit )
 649                 {
 650                         $metadata = $this->mMetaData ;
 651                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
 652                         $helppage = Title::newFromText ( wfmsg("metadata_page") ) ;
 653                         $top = str_replace ( "$1" , $helppage->getInternalURL() , wfmsg("metadata") ) ;
 654                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
 655                 }
 656                 else $metadata = "" ;
 657
 658
 659                 $wgOut->addHTML( <<<END
 660 {$toolbar}
 661 <form id="editform" name="editform" method="post" action="$action"
 662 enctype="multipart/form-data">
 663 {$commentsubject}
 664 <textarea tabindex='1' accesskey="," name="wpTextbox1" rows='{$rows}'
 665 cols='{$cols}'{$ew}>
 666 END
 667 . htmlspecialchars( $wgContLang->recodeForEdit( $this->textbox1 ) ) .
 668 "
 669 </textarea>
 670 {$metadata}
 671 <br />{$editsummary}
 672 {$checkboxhtml}
 673 <input tabindex='5' id='wpSave' type='submit' value=\"{$save}\" name=\"wpSave\" accesskey=\"".wfMsg('accesskey-save')."\"".
 674 " title=\"".wfMsg('tooltip-save')."\"/>
 675 <input tabindex='6' id='wpPreview' type='submit' $liveOnclick value=\"{$prev}\" name=\"wpPreview\" accesskey=\"".wfMsg('accesskey-preview')."\"".
 676 " title=\"".wfMsg('tooltip-preview')."\"/>
 677 <input tabindex='7' id='wpDiff' type='submit' value=\"{$diff}\" name=\"wpDiff\" accesskey=\"".wfMsg('accesskey-diff')."\"".
 678 " title=\"".wfMsg('tooltip-diff')."\"/>
 679 <em>{$cancel}</em> | <em>{$edithelp}</em>{$templates}" );
 680                 $wgOut->addWikiText( $copywarn );
 681                 $wgOut->addHTML( "
 682 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
 683 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n" );
 684
 685                 if ( $wgUser->isLoggedIn() ) {
 686                         /**
 687                          * To make it harder for someone to slip a user a page
 688                          * which submits an edit form to the wiki without their
 689                          * knowledge, a random token is associated with the login
 690                          * session. If it's not passed back with the submission,
 691                          * we won't save the page, or render user JavaScript and
 692                          * CSS previews.
 693                          */
 694                         $token = htmlspecialchars( $wgUser->editToken() );
 695                         $wgOut->addHTML( "
 696 <input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
 697                 }
 698
 699
 700                 if ( $isConflict ) {
 701                         require_once( "DifferenceEngine.php" );
 702                         $wgOut->addWikiText( '==' . wfMsg( "yourdiff" ) . '==' );
 703                         DifferenceEngine::showDiff( $this->textbox2, $this->textbox1,
 704                           wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 705
 706                         $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
 707                         $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
 708 . htmlspecialchars( $wgContLang->recodeForEdit( $this->textbox2 ) ) .
 709 "
 710 </textarea>" );
 711                 }
 712                 $wgOut->addHTML( "</form>\n" );
 713                 if ( $formtype == 'preview' && !$wgUser->getOption( 'previewontop' ) ) {
 714                         $wgOut->addHTML( '<div id="wikiPreview">' . $previewOutput . '</div>' );
 715                 }
 716                 if ( $formtype == 'diff' && !$wgUser->getOption( 'previewontop' ) ) {
 717                         #$wgOut->addHTML( '<div id="wikiPreview">' . $difftext . '</div>' );
 718                         $wgOut->addHTML( $this->getDiff() );
 719                 }
 720         }
 721
 722         /**
 723          * @todo document
 724          */
 725         function getPreviewText( $isConflict, $isCssJsSubpage ) {
 726                 global $wgOut, $wgUser, $wgTitle, $wgParser, $wgAllowDiffPreview, $wgEnableDiffPreviewPreference;
 727                 $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
 728                         "<p class='previewnote'>" . htmlspecialchars( wfMsg( 'previewnote' ) ) . "</p>\n";
 729                 if ( $isConflict ) {
 730                         $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) .
 731                                 "</h2>\n";
 732                 }
 733
 734                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 735                 $parserOptions->setEditSection( false );
 736
 737                 # don't parse user css/js, show message about preview
 738                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
 739
 740                 if ( $isCssJsSubpage ) {
 741                         if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
 742                                 $previewtext = wfMsg('usercsspreview');
 743                         } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
 744                                 $previewtext = wfMsg('userjspreview');
 745                         }
 746                         $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
 747                         $wgOut->addHTML( $parserOutput->mText );
 748                         return $previewhead;
 749                 } else {
 750                         # if user want to see preview when he edit an article
 751                         if( $wgUser->getOption('previewonfirst') and ($this->textbox1 == '')) {
 752                                 $this->textbox1 = $this->mArticle->getContent(true);
 753                         }
 754
 755                         $toparse = $this->textbox1 ;
 756                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
 757
 758                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
 759                                         $wgTitle, $parserOptions );
 760
 761                         $previewHTML = $parserOutput->mText;
 762
 763                         $wgOut->addCategoryLinks($parserOutput->getCategoryLinks());
 764                         $wgOut->addLanguageLinks($parserOutput->getLanguageLinks());
 765                         return $previewhead . $previewHTML;
 766                 }
 767         }
 768
 769         /**
 770          * @todo document
 771          */
 772         function blockedIPpage() {
 773                 global $wgOut, $wgUser, $wgContLang, $wgIP;
 774
 775                 $wgOut->setPageTitle( wfMsg( 'blockedtitle' ) );
 776                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 777                 $wgOut->setArticleRelated( false );
 778
 779                 $id = $wgUser->blockedBy();
 780                 $reason = $wgUser->blockedFor();
 781                 $ip = $wgIP;
 782
 783                 if ( is_numeric( $id ) ) {
 784                         $name = User::whoIs( $id );
 785                 } else {
 786                         $name = $id;
 787                 }
 788                 $link = '[[' . $wgContLang->getNsText( NS_USER ) .
 789                   ":{$name}|{$name}]]";
 790
 791                 $wgOut->addWikiText( wfMsg( 'blockedtext', $link, $reason, $ip, $name ) );
 792                 $wgOut->returnToMain( false );
 793         }
 794
 795         /**
 796          * @todo document
 797          */
 798         function userNotLoggedInPage() {
 799                 global $wgOut;
 800
 801                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
 802                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 803                 $wgOut->setArticleRelated( false );
 804
 805                 $wgOut->addWikiText( wfMsg( 'whitelistedittext' ) );
 806                 $wgOut->returnToMain( false );
 807         }
 808
 809         /**
 810          * @todo document
 811          */
 812         function spamPage ( $match = false )
 813         {
 814                 global $wgOut;
 815                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
 816                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 817                 $wgOut->setArticleRelated( false );
 818
 819                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
 820                 if ( $match ) {
 821                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
 822                 }
 823                 $wgOut->returnToMain( false );
 824         }
 825
 826         /**
 827          * Forks processes to scan the originating IP for an open proxy server
 828          * MemCached can be used to skip IPs that have already been scanned
 829          */
 830         function proxyCheck() {
 831                 global $wgBlockOpenProxies, $wgProxyPorts, $wgProxyScriptPath;
 832                 global $wgIP, $wgUseMemCached, $wgMemc, $wgDBname, $wgProxyMemcExpiry;
 833
 834                 if ( !$wgBlockOpenProxies ) {
 835                         return;
 836                 }
 837
 838                 # Get MemCached key
 839                 $skip = false;
 840                 if ( $wgUseMemCached ) {
 841                         $mcKey = $wgDBname.':proxy:ip:'.$wgIP;
 842                         $mcValue = $wgMemc->get( $mcKey );
 843                         if ( $mcValue ) {
 844                                 $skip = true;
 845                         }
 846                 }
 847
 848                 # Fork the processes
 849                 if ( !$skip ) {
 850                         $title = Title::makeTitle( NS_SPECIAL, 'Blockme' );
 851                         $iphash = md5( $wgIP . $wgProxyKey );
 852                         $url = $title->getFullURL( 'ip='.$iphash );
 853
 854                         foreach ( $wgProxyPorts as $port ) {
 855                                 $params = implode( ' ', array(
 856                                                         escapeshellarg( $wgProxyScriptPath ),
 857                                                         escapeshellarg( $wgIP ),
 858                                                         escapeshellarg( $port ),
 859                                                         escapeshellarg( $url )
 860                                                         ));
 861                                 exec( "php $params &>/dev/null &" );
 862                         }
 863                         # Set MemCached key
 864                         if ( $wgUseMemCached ) {
 865                                 $wgMemc->set( $mcKey, 1, $wgProxyMemcExpiry );
 866                         }
 867                 }
 868         }
 869
 870         /**
 871          * @access private
 872          * @todo document
 873          */
 874         function mergeChangesInto( &$text ){
 875                 $yourtext = $this->mArticle->fetchRevisionText();
 876
 877                 $db =& wfGetDB( DB_MASTER );
 878                 $oldText = $this->mArticle->fetchRevisionText(
 879                         $db->timestamp( $this->edittime ),
 880                         'rev_timestamp' );
 881
 882                 if(wfMerge($oldText, $text, $yourtext, $result)){
 883                         $text = $result;
 884                         return true;
 885                 } else {
 886                         return false;
 887                 }
 888         }
 889
 890
 891         function checkUnicodeCompliantBrowser() {
 892                 global $wgBrowserBlackList;
 893                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
 894                 foreach ( $wgBrowserBlackList as $browser ) {
 895                         if ( preg_match($browser, $currentbrowser) ) {
 896                                 return false;
 897                         }
 898                 }
 899                 return true;
 900         }
 901
 902         /**
 903          * Format an anchor fragment as it would appear for a given section name
 904          * @param string $text
 905          * @return string
 906          * @access private
 907          */
 908         function sectionAnchor( $text ) {
 909                 $headline = Sanitizer::decodeCharReferences( $text );
 910                 # strip out HTML
 911                 $headline = preg_replace( '/<.*?' . '>/', '', $headline );
 912                 $headline = trim( $headline );
 913                 $sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
 914                 $replacearray = array(
 915                         '%3A' => ':',
 916                         '%' => '.'
 917                 );
 918                 return str_replace(
 919                         array_keys( $replacearray ),
 920                         array_values( $replacearray ),
 921                         $sectionanchor );
 922         }
 923
 924         /**
 925          * Shows a bulletin board style toolbar for common editing functions.
 926          * It can be disabled in the user preferences.
 927          * The necessary JavaScript code can be found in style/wikibits.js.
 928          */
 929         function getEditToolbar() {
 930                 global $wgStylePath, $wgLang, $wgMimeType, $wgJsMimeType;
 931
 932                 /**
 933                  * toolarray an array of arrays which each include the filename of
 934                  * the button image (without path), the opening tag, the closing tag,
 935                  * and optionally a sample text that is inserted between the two when no
 936                  * selection is highlighted.
 937                  * The tip text is shown when the user moves the mouse over the button.
 938                  *
 939                  * Already here are accesskeys (key), which are not used yet until someone
 940                  * can figure out a way to make them work in IE. However, we should make
 941                  * sure these keys are not defined on the edit page.
 942                  */
 943                 $toolarray=array(
 944                         array(  'image'=>'button_bold.png',
 945                                         'open'  =>      "\'\'\'",
 946                                         'close' =>      "\'\'\'",
 947                                         'sample'=>      wfMsg('bold_sample'),
 948                                         'tip'   =>      wfMsg('bold_tip'),
 949                                         'key'   =>      'B'
 950                                 ),
 951                         array(  'image'=>'button_italic.png',
 952                                         'open'  =>      "\'\'",
 953                                         'close' =>      "\'\'",
 954                                         'sample'=>      wfMsg('italic_sample'),
 955                                         'tip'   =>      wfMsg('italic_tip'),
 956                                         'key'   =>      'I'
 957                                 ),
 958                         array(  'image'=>'button_link.png',
 959                                         'open'  =>      '[[',
 960                                         'close' =>      ']]',
 961                                         'sample'=>      wfMsg('link_sample'),
 962                                         'tip'   =>      wfMsg('link_tip'),
 963                                         'key'   =>      'L'
 964                                 ),
 965                         array(  'image'=>'button_extlink.png',
 966                                         'open'  =>      '[',
 967                                         'close' =>      ']',
 968                                         'sample'=>      wfMsg('extlink_sample'),
 969                                         'tip'   =>      wfMsg('extlink_tip'),
 970                                         'key'   =>      'X'
 971                                 ),
 972                         array(  'image'=>'button_headline.png',
 973                                         'open'  =>      "\\n== ",
 974                                         'close' =>      " ==\\n",
 975                                         'sample'=>      wfMsg('headline_sample'),
 976                                         'tip'   =>      wfMsg('headline_tip'),
 977                                         'key'   =>      'H'
 978                                 ),
 979                         array(  'image'=>'button_image.png',
 980                                         'open'  =>      '[['.$wgLang->getNsText(NS_IMAGE).":",
 981                                         'close' =>      ']]',
 982                                         'sample'=>      wfMsg('image_sample'),
 983                                         'tip'   =>      wfMsg('image_tip'),
 984                                         'key'   =>      'D'
 985                                 ),
 986                         array(  'image' =>'button_media.png',
 987                                         'open'  =>      '[['.$wgLang->getNsText(NS_MEDIA).':',
 988                                         'close' =>      ']]',
 989                                         'sample'=>      wfMsg('media_sample'),
 990                                         'tip'   =>      wfMsg('media_tip'),
 991                                         'key'   =>      'M'
 992                                 ),
 993                         array(  'image' =>'button_math.png',
 994                                         'open'  =>      "\\<math\\>",
 995                                         'close' =>      "\\</math\\>",
 996                                         'sample'=>      wfMsg('math_sample'),
 997                                         'tip'   =>      wfMsg('math_tip'),
 998                                         'key'   =>      'C'
 999                                 ),
1000                         array(  'image' =>'button_nowiki.png',
1001                                         'open'  =>      "\\<nowiki\\>",
1002                                         'close' =>      "\\</nowiki\\>",
1003                                         'sample'=>      wfMsg('nowiki_sample'),
1004                                         'tip'   =>      wfMsg('nowiki_tip'),
1005                                         'key'   =>      'N'
1006                                 ),
1007                         array(  'image' =>'button_sig.png',
1008                                         'open'  =>      '--~~~~',
1009                                         'close' =>      '',
1010                                         'sample'=>      '',
1011                                         'tip'   =>      wfMsg('sig_tip'),
1012                                         'key'   =>      'Y'
1013                                 ),
1014                         array(  'image' =>'button_hr.png',
1015                                         'open'  =>      "\\n----\\n",
1016                                         'close' =>      '',
1017                                         'sample'=>      '',
1018                                         'tip'   =>      wfMsg('hr_tip'),
1019                                         'key'   =>      'R'
1020                                 )
1021                 );
1022                 $toolbar ="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
1023
1024                 $toolbar.="document.writeln(\"<div id='toolbar'>\");\n";
1025                 foreach($toolarray as $tool) {
1026
1027                         $image=$wgStylePath.'/common/images/'.$tool['image'];
1028                         $open=$tool['open'];
1029                         $close=$tool['close'];
1030                         $sample = wfEscapeJsString( $tool['sample'] );
1031
1032                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
1033                         // Older browsers show a "speedtip" type message only for ALT.
1034                         // Ideally these should be different, realistically they
1035                         // probably don't need to be.
1036                         $tip = wfEscapeJsString( $tool['tip'] );
1037
1038                         #$key = $tool["key"];
1039
1040                         $toolbar.="addButton('$image','$tip','$open','$close','$sample');\n";
1041                 }
1042
1043                 $toolbar.="addInfobox('" . wfEscapeJsString( wfMsg( "infobox" ) ) .
1044                         "','" . wfEscapeJsString( wfMsg( "infobox_alert" ) ) . "');\n";
1045                 $toolbar.="document.writeln(\"</div>\");\n";
1046
1047                 $toolbar.="/*]]>*/\n</script>";
1048                 return $toolbar;
1049         }
1050
1051         /**
1052          * Output preview text only. This can be sucked into the edit page
1053          * via JavaScript, and saves the server time rendering the skin as
1054          * well as theoretically being more robust on the client (doesn't
1055          * disturb the edit box's undo history, won't eat your text on
1056          * failure, etc).
1057          *
1058          * @todo This doesn't include category or interlanguage links.
1059          *       Would need to enhance it a bit, maybe wrap them in XML
1060          *       or something... that might also require more skin
1061          *       initialization, so check whether that's a problem.
1062          */
1063         function livePreview() {
1064                 global $wgOut;
1065                 $wgOut->disable();
1066                 header( 'Content-type: text/xml' );
1067                 header( 'Cache-control: no-cache' );
1068                 # FIXME
1069                 echo $this->getPreviewText( false, false );
1070         }
1071
1072
1073         /**
1074          * Get a diff between the current contents of the edit box and the
1075          * version of the page we're editing from.
1076          *
1077          * If this is a section edit, we'll replace the section as for final
1078          * save and then make a comparison.
1079          *
1080          * @return string HTML
1081          */
1082         function getDiff() {
1083                 require_once( 'DifferenceEngine.php' );
1084                 $oldtext = $this->mArticle->getContent( true );
1085                 $newtext = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
1086                         $this->section, $this->textbox1, $this->summary, $this->edittime );
1087                 $oldtitle = wfMsg( 'currentrev' );
1088                 $newtitle = wfMsg( 'yourtext' );
1089                 if ( $oldtext != wfMsg( 'noarticletext' ) || $newtext != '' ) {
1090                         $difftext = DifferenceEngine::getDiff( $oldtext, $newtext, $oldtitle, $newtitle );
1091                 }
1092
1093                 return '<div id="wikiDiff">' . $difftext . '</div>';
1094         }
1095
1096 }
1097
1098 ?>