includes/EditPage.php

   1 <?php
   2 # $Id$
   3 /**
   4  * Contain the EditPage class
   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 class EditPage {
  14         var $mArticle;
  15         var $mTitle;
  16
  17         # Form values
  18         var $save = false, $preview = false;
  19         var $minoredit = false, $watchthis = false;
  20         var $textbox1 = '', $textbox2 = '', $summary = '';
  21         var $edittime = '', $section = '';
  22         var $oldid = 0;
  23
  24         /**
  25          * @todo document
  26          * @param $article
  27          */
  28         function EditPage( $article ) {
  29                 $this->mArticle =& $article;
  30                 global $wgTitle;
  31                 $this->mTitle =& $wgTitle;
  32         }
  33
  34         /**
  35          * This is the function that gets called for "action=edit".
  36          */
  37         function edit() {
  38                 global $wgOut, $wgUser, $wgWhitelistEdit, $wgRequest;
  39                 // this is not an article
  40                 $wgOut->setArticleFlag(false);
  41
  42                 $this->importFormData( $wgRequest );
  43
  44                 if ( ! $this->mTitle->userCanEdit() ) {
  45                         $wgOut->readOnlyPage( $this->mArticle->getContent( true ), true );
  46                         return;
  47                 }
  48                 if ( $wgUser->isBlocked() ) {
  49                         $this->blockedIPpage();
  50                         return;
  51                 }
  52                 if ( !$wgUser->getID() && $wgWhitelistEdit ) {
  53                         $this->userNotLoggedInPage();
  54                         return;
  55                 }
  56                 if ( wfReadOnly() ) {
  57                         if( $this->save || $this->preview ) {
  58                                 $this->editForm( 'preview' );
  59                         } else {
  60                                 $wgOut->readOnlyPage( $this->mArticle->getContent( true ) );
  61                         }
  62                         return;
  63                 }
  64                 if ( $this->save ) {
  65                         $this->editForm( 'save' );
  66                 } else if ( $this->preview ) {
  67                         $this->editForm( 'preview' );
  68                 } else { # First time through
  69                         $this->editForm( 'initial' );
  70                 }
  71         }
  72
  73         /**
  74          * @todo document
  75          */
  76         function importFormData( &$request ) {
  77                 # These fields need to be checked for encoding.
  78                 # Also remove trailing whitespace, but don't remove _initial_
  79                 # whitespace from the text boxes. This may be significant formatting.
  80                 $this->textbox1 = rtrim( $request->getText( 'wpTextbox1' ) );
  81                 $this->textbox2 = rtrim( $request->getText( 'wpTextbox2' ) );
  82                 $this->summary = trim( $request->getText( 'wpSummary' ) );
  83
  84                 $this->edittime = $request->getVal( 'wpEdittime' );
  85                 if( !preg_match( '/^\d{14}$/', $this->edittime )) $this->edittime = '';
  86
  87                 $this->preview = $request->getCheck( 'wpPreview' );
  88                 $this->save = $request->wasPosted() && !$this->preview;
  89                 $this->minoredit = $request->getCheck( 'wpMinoredit' );
  90                 $this->watchthis = $request->getCheck( 'wpWatchthis' );
  91
  92                 $this->oldid = $request->getInt( 'oldid' );
  93
  94                 # Section edit can come from either the form or a link
  95                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
  96         }
  97
  98         /**
  99          * Since there is only one text field on the edit form,
 100          * pressing <enter> will cause the form to be submitted, but
 101          * the submit button value won't appear in the query, so we
 102          * Fake it here before going back to edit().  This is kind of
 103          * ugly, but it helps some old URLs to still work.
 104          */
 105         function submit() {
 106                 if( !$this->preview ) $this->save = true;
 107
 108                 $this->edit();
 109         }
 110
 111         /**
 112          * The edit form is self-submitting, so that when things like
 113          * preview and edit conflicts occur, we get the same form back
 114          * with the extra stuff added.  Only when the final submission
 115          * is made and all is well do we actually save and redirect to
 116          * the newly-edited page.
 117          *
 118          * @param string $formtype Type of form either : save, initial or preview
 119          */
 120         function editForm( $formtype ) {
 121                 global $wgOut, $wgUser;
 122                 global $wgLang, $wgParser, $wgTitle;
 123                 global $wgAllowAnonymousMinor;
 124                 global $wgWhitelistEdit;
 125                 global $wgSpamRegex, $wgFilterCallback;
 126
 127                 $sk = $wgUser->getSkin();
 128                 $isConflict = false;
 129                 // css / js subpages of user pages get a special treatment
 130                 $isCssJsSubpage = (Namespace::getUser() == $wgTitle->getNamespace() and preg_match("/\\.(css|js)$/", $wgTitle->getText() ));
 131
 132                 if(!$this->mTitle->getArticleID()) { # new article
 133                         $wgOut->addWikiText(wfmsg('newarticletext'));
 134                 }
 135
 136                 if( Namespace::isTalk( $this->mTitle->getNamespace() ) ) {
 137                         $wgOut->addWikiText(wfmsg('talkpagetext'));
 138                 }
 139
 140                 # Attempt submission here.  This will check for edit conflicts,
 141                 # and redundantly check for locked database, blocked IPs, etc.
 142                 # that edit() already checked just in case someone tries to sneak
 143                 # in the back door with a hand-edited submission URL.
 144
 145                 if ( 'save' == $formtype ) {
 146                         # Check for spam
 147                         if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 148                                 $this->spamPage ( $matches );
 149                                 return;
 150                         }
 151                         if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 152                                 # Error messages or other handling should be performed by the filter function
 153                                 return;
 154                         }
 155                         if ( $wgUser->isBlocked() ) {
 156                                 $this->blockedIPpage();
 157                                 return;
 158                         }
 159                         if ( !$wgUser->getID() && $wgWhitelistEdit ) {
 160                                 $this->userNotLoggedInPage();
 161                                 return;
 162                         }
 163                         if ( wfReadOnly() ) {
 164                                 $wgOut->readOnlyPage();
 165                                 return;
 166                         }
 167
 168                         # If article is new, insert it.
 169                         $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 170                         if ( 0 == $aid ) {
 171                                 # Don't save a new article if it's blank.
 172                                 if ( ( '' == $this->textbox1 ) ||
 173                                   ( wfMsg( 'newarticletext' ) == $this->textbox1 ) ) {
 174                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 175                                         return;
 176                                 }
 177                                 $this->mArticle->insertNewArticle( $this->textbox1, $this->summary, $this->minoredit, $this->watchthis );
 178                                 return;
 179                         }
 180
 181                         # Article exists. Check for edit conflict.
 182
 183                         $this->mArticle->clear(); # Force reload of dates, etc.
 184                         $this->mArticle->forUpdate( true ); # Lock the article
 185
 186                         if( ( $this->section != 'new' ) &&
 187                                 ($this->mArticle->getTimestamp() != $this->edittime ) ) {
 188                                 $isConflict = true;
 189                         }
 190                         $userid = $wgUser->getID();
 191
 192                         $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 193                                 $this->section, $this->textbox1, $this->summary);
 194                         # Suppress edit conflict with self
 195
 196                         if ( ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 197                                 $isConflict = false;
 198                         } else {
 199                                 # switch from section editing to normal editing in edit conflict
 200                                 if($isConflict) {
 201                                         # Attempt merge
 202                                         if( $this->mergeChangesInto( $text ) ){
 203                                                 // Successful merge! Maybe we should tell the user the good news?
 204                                                 $isConflict = false;
 205                                         } else {
 206                                                 $this->section = '';
 207                                                 $this->textbox1 = $text;
 208                                         }
 209                                 }
 210                         }
 211                         if ( ! $isConflict ) {
 212                                 # All's well
 213                                 $sectionanchor = '';
 214                                 if( $this->section != '' ) {
 215                                         # Try to get a section anchor from the section source, redirect to edited section if header found
 216                                         # XXX: might be better to integrate this into Article::getTextOfLastEditWithSectionReplacedOrAdded
 217                                         # for duplicate heading checking and maybe parsing
 218                                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 219                                         # we can't deal with anchors, includes, html etc in the header for now,
 220                                         # headline would need to be parsed to improve this
 221                                         #if($hasmatch and strlen($matches[2]) > 0 and !preg_match( "/[\\['{<>]/", $matches[2])) {
 222                                         if($hasmatch and strlen($matches[2]) > 0) {
 223                                                 global $wgInputEncoding;
 224                                                 $headline = do_html_entity_decode( $matches[2], ENT_COMPAT, $wgInputEncoding );
 225                                                 # strip out HTML
 226                                                 $headline = preg_replace( "/<.*?" . ">/","",$headline );
 227                                                 $headline = trim( $headline );
 228                                                 $sectionanchor = '#'.urlencode( str_replace(' ', '_', $headline ) );
 229                                                 $replacearray = array(
 230                                                         '%3A' => ':',
 231                                                         '%' => '.'
 232                                                 );
 233                                                 $sectionanchor = str_replace(array_keys($replacearray),array_values($replacearray),$sectionanchor);
 234                                         }
 235                                 }
 236
 237                                 # update the article here
 238                                 if($this->mArticle->updateArticle( $text, $this->summary, $this->minoredit, $this->watchthis, '', $sectionanchor ))
 239                                         return;
 240                                 else
 241                                         $isConflict = true;
 242                         }
 243                 }
 244                 # First time through: get contents, set time for conflict
 245                 # checking, etc.
 246
 247                 if ( 'initial' == $formtype ) {
 248                         $this->edittime = $this->mArticle->getTimestamp();
 249                         $this->textbox1 = $this->mArticle->getContent( true );
 250                         $this->summary = '';
 251                         $this->proxyCheck();
 252                 }
 253                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 254
 255                 # Enabled article-related sidebar, toplinks, etc.
 256                 $wgOut->setArticleRelated( true );
 257
 258                 if ( $isConflict ) {
 259                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 260                         $wgOut->setPageTitle( $s );
 261                         $wgOut->addHTML( wfMsg( 'explainconflict' ) );
 262
 263                         $this->textbox2 = $this->textbox1;
 264                         $this->textbox1 = $this->mArticle->getContent( true );
 265                         $this->edittime = $this->mArticle->getTimestamp();
 266                 } else {
 267                         $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 268
 269                         if( $this->section != '' ) {
 270                                 if( $this->section == 'new' ) {
 271                                         $s.=wfMsg('commentedit');
 272                                 } else {
 273                                         $s.=wfMsg('sectionedit');
 274                                 }
 275                                 if(!$this->preview) {
 276                                         $sectitle=preg_match("/^=+(.*?)=+/mi",
 277                                         $this->textbox1,
 278                                         $matches);
 279                                         if( !empty( $matches[1] ) ) {
 280                                                 $this->summary = "/* ". trim($matches[1])." */ ";
 281                                         }
 282                                 }
 283                         }
 284                         $wgOut->setPageTitle( $s );
 285                         if ( $this->oldid ) {
 286                                 $this->mArticle->setOldSubtitle();
 287                                 $wgOut->addHTML( wfMsg( 'editingold' ) );
 288                         }
 289                 }
 290
 291                 if( wfReadOnly() ) {
 292                         $wgOut->addHTML( '<strong>' .
 293                         wfMsg( 'readonlywarning' ) .
 294                         "</strong>" );
 295                 } else if ( $isCssJsSubpage and 'preview' != $formtype) {
 296                         $wgOut->addHTML( wfMsg( 'usercssjsyoucanpreview' ));
 297                 }
 298                 if( $this->mTitle->isProtected() ) {
 299                         $wgOut->addHTML( '<strong>' . wfMsg( 'protectedpagewarning' ) .
 300                           "</strong><br />\n" );
 301                 }
 302
 303                 $kblength = (int)(strlen( $this->textbox1 ) / 1024);
 304                 if( $kblength > 29 ) {
 305                         $wgOut->addHTML( '<strong>' .
 306                                 wfMsg( 'longpagewarning', $wgLang->formatNum( $kblength ) )
 307                                 . '</strong>' );
 308                 }
 309
 310                 $rows = $wgUser->getOption( 'rows' );
 311                 $cols = $wgUser->getOption( 'cols' );
 312
 313                 $ew = $wgUser->getOption( 'editwidth' );
 314                 if ( $ew ) $ew = " style=\"width:100%\"";
 315                 else $ew = '';
 316
 317                 $q = 'action=submit';
 318                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 319                 $action = $this->mTitle->escapeLocalURL( $q );
 320
 321                 $summary = wfMsg('summary');
 322                 $subject = wfMsg('subject');
 323                 $minor   = wfMsg('minoredit');
 324                 $watchthis = wfMsg ('watchthis');
 325                 $save = wfMsg('savearticle');
 326                 $prev = wfMsg('showpreview');
 327
 328                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
 329                                 wfMsg('cancel') );
 330                 $edithelpurl = $sk->makeUrl( wfMsg( 'edithelppage' ));
 331                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
 332                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
 333                         htmlspecialchars( wfMsg( 'newwindow' ) );
 334
 335                 global $wgRightsText;
 336                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
 337                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
 338                                 '[[' . wfMsg( 'copyrightpage' ) . ']]',
 339                                 $wgRightsText ) . "\n</div>";
 340
 341                 if( $wgUser->getOption('showtoolbar') and !$isCssJsSubpage ) {
 342                         # prepare toolbar for edit buttons
 343                         $toolbar = $sk->getEditToolbar();
 344                 } else {
 345                         $toolbar = '';
 346                 }
 347
 348                 // activate checkboxes if user wants them to be always active
 349                 if( !$this->preview ) {
 350                         if( $wgUser->getOption( 'watchdefault' ) ) $this->watchthis = true;
 351                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
 352
 353                         // activate checkbox also if user is already watching the page,
 354                         // require wpWatchthis to be unset so that second condition is not
 355                         // checked unnecessarily
 356                         if( !$this->watchthis && $this->mTitle->userIsWatching() ) $this->watchthis = true;
 357                 }
 358
 359                 $minoredithtml = '';
 360
 361                 if ( 0 != $wgUser->getID() || $wgAllowAnonymousMinor ) {
 362                         $minoredithtml =
 363                                 "<input tabindex='3' type='checkbox' value='1' name='wpMinoredit'".($this->minoredit?" checked='checked'":"").
 364                                 " accesskey='".wfMsg('accesskey-minoredit')."' id='wpMinoredit' />".
 365                                 "<label for='wpMinoredit' title='".wfMsg('tooltip-minoredit')."'>{$minor}</label>";
 366                 }
 367
 368                 $watchhtml = '';
 369
 370                 if ( 0 != $wgUser->getID() ) {
 371                         $watchhtml = "<input tabindex='4' type='checkbox' name='wpWatchthis'".($this->watchthis?" checked='checked'":"").
 372                                 " accesskey='".wfMsg('accesskey-watch')."' id='wpWatchthis'  />".
 373                                 "<label for='wpWatchthis' title='".wfMsg('tooltip-watch')."'>{$watchthis}</label>";
 374                 }
 375
 376                 $checkboxhtml = $minoredithtml . $watchhtml . '<br />';
 377
 378                 if ( 'preview' == $formtype) {
 379                         $previewhead='<h2>' . wfMsg( 'preview' ) . "</h2>\n<p><center><font color=\"#cc0000\">" .
 380                                 wfMsg( 'note' ) . wfMsg( 'previewnote' ) . "</font></center></p>\n";
 381                         if ( $isConflict ) {
 382                                 $previewhead.='<h2>' . wfMsg( 'previewconflict' ) .
 383                                         "</h2>\n";
 384                         }
 385
 386                         $parserOptions = ParserOptions::newFromUser( $wgUser );
 387                         $parserOptions->setEditSection( false );
 388                         $parserOptions->setEditSectionOnRightClick( false );
 389
 390                         # don't parse user css/js, show message about preview
 391                         # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
 392
 393                         if ( $isCssJsSubpage ) {
 394                                 if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
 395                                         $previewtext = wfMsg('usercsspreview');
 396                                 } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
 397                                         $previewtext = wfMsg('userjspreview');
 398                                 }
 399                                 $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
 400                                 $wgOut->addHTML( $parserOutput->mText );
 401                         } else {
 402                                 $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $this->textbox1 ) ."\n\n",
 403                                                 $wgTitle, $parserOptions );
 404                                 $previewHTML = $parserOutput->mText;
 405
 406                                 if($wgUser->getOption('previewontop')) {
 407                                         $wgOut->addHTML($previewhead);
 408                                         $wgOut->addHTML($previewHTML);
 409                                 }
 410                                 $wgOut->addCategoryLinks($parserOutput->getCategoryLinks());
 411                                 $wgOut->addLanguageLinks($parserOutput->getLanguageLinks());
 412                                 $wgOut->addHTML( "<br style=\"clear:both;\" />\n" );
 413                         }
 414                 }
 415
 416                 # if this is a comment, show a subject line at the top, which is also the edit summary.
 417                 # Otherwise, show a summary field at the bottom
 418                 $summarytext = htmlspecialchars( $wgLang->recodeForEdit( $this->summary ) ); # FIXME
 419                         if( $this->section == 'new' ) {
 420                                 $commentsubject="{$subject}: <input tabindex='1' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 421                                 $editsummary = '';
 422                         } else {
 423                                 $commentsubject = '';
 424                                 $editsummary="{$summary}: <input tabindex='3' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 425                         }
 426
 427                 if( !$this->preview ) {
 428                 # Don't select the edit box on preview; this interferes with seeing what's going on.
 429                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
 430                 }
 431                 # Prepare a list of templates used by this page
 432                 $db =& wfGetDB( DB_SLAVE );
 433                 $cur = $db->tableName( 'cur' );
 434                 $links = $db->tableName( 'links' );
 435                 $id = $this->mTitle->getArticleID();
 436                 $sql = "SELECT cur_namespace,cur_title,cur_id ".
 437                         "FROM $cur,$links WHERE l_to=cur_id AND l_from={$id} and cur_namespace=".NS_TEMPLATE;
 438                 $res = $db->query( $sql, "EditPage::editform" );
 439
 440                 if ( $db->numRows( $res ) ) {
 441                         $templates = '<br />'. wfMsg( 'templatesused' ) . '<ul>';
 442                         while ( $row = $db->fetchObject( $res ) ) {
 443                                 if ( $titleObj = Title::makeTitle( $row->cur_namespace, $row->cur_title ) ) {
 444                                         $templates .= '<li>' . $sk->makeLinkObj( $titleObj ) . '</li>';
 445                                 }
 446                         }
 447                         $templates .= '</ul>';
 448                 } else {
 449                         $templates = '';
 450                 }
 451                 $wgOut->addHTML( "
 452 {$toolbar}
 453 <form id=\"editform\" name=\"editform\" method=\"post\" action=\"$action\"
 454 enctype=\"application/x-www-form-urlencoded\">
 455 {$commentsubject}
 456 <textarea tabindex='1' accesskey=\",\" name=\"wpTextbox1\" rows='{$rows}'
 457 cols='{$cols}'{$ew}>" .
 458 htmlspecialchars( $wgLang->recodeForEdit( $this->textbox1 ) ) .
 459 "
 460 </textarea>
 461 <br />{$editsummary}
 462 {$checkboxhtml}
 463 <input tabindex='5' id='wpSave' type='submit' value=\"{$save}\" name=\"wpSave\" accesskey=\"".wfMsg('accesskey-save')."\"".
 464 " title=\"".wfMsg('tooltip-save')."\"/>
 465 <input tabindex='6' id='wpPreview' type='submit' value=\"{$prev}\" name=\"wpPreview\" accesskey=\"".wfMsg('accesskey-preview')."\"".
 466 " title=\"".wfMsg('tooltip-preview')."\"/>
 467 <em>{$cancel}</em> | <em>{$edithelp}</em>{$templates}" );
 468                 $wgOut->addWikiText( $copywarn );
 469                 $wgOut->addHTML( "
 470 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
 471 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n" );
 472
 473                 if ( $isConflict ) {
 474                         require_once( "DifferenceEngine.php" );
 475                         $wgOut->addHTML( "<h2>" . wfMsg( "yourdiff" ) . "</h2>\n" );
 476                         DifferenceEngine::showDiff( $this->textbox2, $this->textbox1,
 477                           wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 478
 479                         $wgOut->addHTML( "<h2>" . wfMsg( "yourtext" ) . "</h2>
 480 <textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
 481 . htmlspecialchars( $wgLang->recodeForEdit( $this->textbox2 ) ) .
 482 "
 483 </textarea>" );
 484                 }
 485                 $wgOut->addHTML( "</form>\n" );
 486                 if($formtype =="preview" && !$wgUser->getOption("previewontop")) {
 487                         $wgOut->addHTML($previewhead);
 488                         $wgOut->addHTML($previewHTML);
 489                 }
 490         }
 491
 492         /**
 493          * @todo document
 494          */
 495         function blockedIPpage() {
 496                 global $wgOut, $wgUser, $wgLang, $wgIP;
 497
 498                 $wgOut->setPageTitle( wfMsg( 'blockedtitle' ) );
 499                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 500                 $wgOut->setArticleRelated( false );
 501
 502                 $id = $wgUser->blockedBy();
 503                 $reason = $wgUser->blockedFor();
 504                 $ip = $wgIP;
 505
 506                 if ( is_numeric( $id ) ) {
 507                         $name = User::whoIs( $id );
 508                 } else {
 509                         $name = $id;
 510                 }
 511                 $link = '[[' . $wgLang->getNsText( Namespace::getUser() ) .
 512                   ":{$name}|{$name}]]";
 513
 514                 $wgOut->addWikiText( wfMsg( 'blockedtext', $link, $reason, $ip, $name ) );
 515                 $wgOut->returnToMain( false );
 516         }
 517
 518         /**
 519          * @todo document
 520          */
 521         function userNotLoggedInPage() {
 522                 global $wgOut, $wgUser, $wgLang;
 523
 524                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
 525                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 526                 $wgOut->setArticleRelated( false );
 527
 528                 $wgOut->addWikiText( wfMsg( 'whitelistedittext' ) );
 529                 $wgOut->returnToMain( false );
 530         }
 531
 532         /**
 533          * @todo document
 534          */
 535         function spamPage ( $matches = array() )
 536         {
 537                 global $wgOut;
 538                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
 539                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 540                 $wgOut->setArticleRelated( false );
 541
 542                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
 543                 if ( isset ( $matches[0] ) ) {
 544                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$matches[0]}</nowiki>" ) );
 545                 }
 546                 $wgOut->returnToMain( false );
 547         }
 548
 549         /**
 550          * Forks processes to scan the originating IP for an open proxy server
 551          * MemCached can be used to skip IPs that have already been scanned
 552          */
 553         function proxyCheck() {
 554                 global $wgBlockOpenProxies, $wgProxyPorts, $wgProxyScriptPath;
 555                 global $wgIP, $wgUseMemCached, $wgMemc, $wgDBname, $wgProxyMemcExpiry;
 556
 557                 if ( !$wgBlockOpenProxies ) {
 558                         return;
 559                 }
 560
 561                 # Get MemCached key
 562                 $skip = false;
 563                 if ( $wgUseMemCached ) {
 564                         $mcKey = $wgDBname.':proxy:ip:'.$wgIP;
 565                         $mcValue = $wgMemc->get( $mcKey );
 566                         if ( $mcValue ) {
 567                                 $skip = true;
 568                         }
 569                 }
 570
 571                 # Fork the processes
 572                 if ( !$skip ) {
 573                         $title = Title::makeTitle( NS_SPECIAL, 'Blockme' );
 574                         $iphash = md5( $wgIP . $wgProxyKey );
 575                         $url = $title->getFullURL( 'ip='.$iphash );
 576
 577                         foreach ( $wgProxyPorts as $port ) {
 578                                 $params = implode( ' ', array(
 579                                                         escapeshellarg( $wgProxyScriptPath ),
 580                                                         escapeshellarg( $wgIP ),
 581                                                         escapeshellarg( $port ),
 582                                                         escapeshellarg( $url )
 583                                                         ));
 584                                 exec( "php $params &>/dev/null &" );
 585                         }
 586                         # Set MemCached key
 587                         if ( $wgUseMemCached ) {
 588                                 $wgMemc->set( $mcKey, 1, $wgProxyMemcExpiry );
 589                         }
 590                 }
 591         }
 592
 593         /**
 594          * @access private
 595          * @todo document
 596          */
 597         function mergeChangesInto( &$text ){
 598                 $fname = 'EditPage::mergeChangesInto';
 599                 $oldDate = $this->edittime;
 600                 $dbw =& wfGetDB( DB_MASTER );
 601                 $obj = $dbw->getArray( 'cur', array( 'cur_text' ), array( 'cur_id' => $this->mTitle->getArticleID() ),
 602                         $fname, 'FOR UPDATE' );
 603
 604                 $yourtext = $obj->cur_text;
 605                 $ns = $this->mTitle->getNamespace();
 606                 $title = $this->mTitle->getDBkey();
 607                 $obj = $dbw->getArray( 'old',
 608                         array( 'old_text','old_flags'),
 609                         array( 'old_namespace' => $ns, 'old_title' => $title,
 610                                 'old_timestamp' => $dbw->timestamp($oldDate)),
 611                         $fname );
 612                 $oldText = Article::getRevisionText( $obj );
 613
 614                 if(wfMerge($oldText, $text, $yourtext, $result)){
 615                         $text = $result;
 616                         return true;
 617                 } else {
 618                         return false;
 619                 }
 620         }
 621 }
 622
 623 ?>