includes/EditPage.php

   1 <?php
   2 # $Id$
   3
   4 # Splitting edit page/HTML interface from Article...
   5 # The actual database and text munging is still in Article,
   6 # but it should get easier to call those from alternate
   7 # interfaces.
   8
   9 class EditPage {
  10         var $mArticle;
  11         var $mTitle;
  12
  13         # Form values
  14         var $save = false, $preview = false;
  15         var $minoredit = false, $watchthis = false;
  16         var $textbox1 = "", $textbox2 = "", $summary = "";
  17         var $edittime = "", $section = "";
  18         var $oldid = 0;
  19
  20         function EditPage( $article ) {
  21                 $this->mArticle =& $article;
  22                 global $wgTitle;
  23                 $this->mTitle =& $wgTitle;
  24         }
  25
  26         # This is the function that gets called for "action=edit".
  27
  28         function edit()
  29         {
  30                 global $wgOut, $wgUser, $wgWhitelistEdit, $wgRequest;
  31                 // this is not an article
  32                 $wgOut->setArticleFlag(false);
  33
  34                 $this->importFormData( $wgRequest );
  35
  36                 if ( ! $this->mTitle->userCanEdit() ) {
  37                         $wgOut->readOnlyPage( $this->mArticle->getContent( true ), true );
  38                         return;
  39                 }
  40                 if ( $wgUser->isBlocked() ) {
  41                         $this->blockedIPpage();
  42                         return;
  43                 }
  44                 if ( !$wgUser->getID() && $wgWhitelistEdit ) {
  45                         $this->userNotLoggedInPage();
  46                         return;
  47                 }
  48                 if ( wfReadOnly() ) {
  49                         if( $this->save || $this->preview ) {
  50                                 $this->editForm( "preview" );
  51                         } else {
  52                                 $wgOut->readOnlyPage( $this->mArticle->getContent( true ) );
  53                         }
  54                         return;
  55                 }
  56                 if ( $this->save ) {
  57                         $this->editForm( "save" );
  58                 } else if ( $this->preview ) {
  59                         $this->editForm( "preview" );
  60                 } else { # First time through
  61                         $this->editForm( "initial" );
  62                 }
  63         }
  64
  65         function importFormData( &$request ) {
  66                 # These fields need to be checked for encoding.
  67                 # Also remove trailing whitespace, but don't remove _initial_
  68                 # whitespace from the text boxes. This may be significant formatting.
  69                 $this->textbox1 = rtrim( $request->getText( "wpTextbox1" ) );
  70                 $this->textbox2 = rtrim( $request->getText( "wpTextbox2" ) );
  71                 $this->summary = trim( $request->getText( "wpSummary" ) );
  72
  73                 $this->edittime = $request->getVal( 'wpEdittime' );
  74                 if( !preg_match( '/^\d{14}$/', $this->edittime )) $this->edittime = "";
  75
  76                 $this->preview = $request->getCheck( 'wpPreview' );
  77                 $this->save = $request->wasPosted() && !$this->preview;
  78                 $this->minoredit = $request->getCheck( 'wpMinoredit' );
  79                 $this->watchthis = $request->getCheck( 'wpWatchthis' );
  80
  81                 $this->oldid = $request->getInt( 'oldid' );
  82
  83                 # Section edit can come from either the form or a link
  84                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
  85         }
  86
  87         # Since there is only one text field on the edit form,
  88         # pressing <enter> will cause the form to be submitted, but
  89         # the submit button value won't appear in the query, so we
  90         # Fake it here before going back to edit().  This is kind of
  91         # ugly, but it helps some old URLs to still work.
  92
  93         function submit()
  94         {
  95                 if( !$this->preview ) $this->save = true;
  96
  97                 $this->edit();
  98         }
  99
 100         # The edit form is self-submitting, so that when things like
 101         # preview and edit conflicts occur, we get the same form back
 102         # with the extra stuff added.  Only when the final submission
 103         # is made and all is well do we actually save and redirect to
 104         # the newly-edited page.
 105
 106         function editForm( $formtype )
 107         {
 108                 global $wgOut, $wgUser;
 109                 global $wgLang, $wgParser, $wgTitle;
 110                 global $wgAllowAnonymousMinor;
 111                 global $wgWhitelistEdit;
 112                 global $wgSpamRegex, $wgFilterCallback;
 113
 114                 $sk = $wgUser->getSkin();
 115                 $isConflict = false;
 116                 // css / js subpages of user pages get a special treatment
 117                 $isCssJsSubpage = (Namespace::getUser() == $wgTitle->getNamespace() and preg_match("/\\.(css|js)$/", $wgTitle->getText() ));
 118
 119                 if(!$this->mTitle->getArticleID()) { # new article
 120                         $wgOut->addWikiText(wfmsg("newarticletext"));
 121                 }
 122
 123                 if( Namespace::isTalk( $this->mTitle->getNamespace() ) ) {
 124                         $wgOut->addWikiText(wfmsg("talkpagetext"));
 125                 }
 126
 127                 # Attempt submission here.  This will check for edit conflicts,
 128                 # and redundantly check for locked database, blocked IPs, etc.
 129                 # that edit() already checked just in case someone tries to sneak
 130                 # in the back door with a hand-edited submission URL.
 131
 132                 if ( "save" == $formtype ) {
 133                         # Check for spam
 134                         if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 135                                 $this->spamPage ( $matches );
 136                                 return;
 137                         }
 138                         if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 139                                 # Error messages or other handling should be performed by the filter function
 140                                 return;
 141                         }
 142                         if ( $wgUser->isBlocked() ) {
 143                                 $this->blockedIPpage();
 144                                 return;
 145                         }
 146                         if ( !$wgUser->getID() && $wgWhitelistEdit ) {
 147                                 $this->userNotLoggedInPage();
 148                                 return;
 149                         }
 150                         if ( wfReadOnly() ) {
 151                                 $wgOut->readOnlyPage();
 152                                 return;
 153                         }
 154
 155                         # If article is new, insert it.
 156                         $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 157                         if ( 0 == $aid ) {
 158                                 # Don't save a new article if it's blank.
 159                                 if ( ( "" == $this->textbox1 ) ||
 160                                   ( wfMsg( "newarticletext" ) == $this->textbox1 ) ) {
 161                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 162                                         return;
 163                                 }
 164                                 $this->mArticle->insertNewArticle( $this->textbox1, $this->summary, $this->minoredit, $this->watchthis );
 165                                 return;
 166                         }
 167
 168                         # Article exists. Check for edit conflict.
 169
 170                         $this->mArticle->clear(); # Force reload of dates, etc.
 171                         $this->mArticle->forUpdate( true ); # Lock the article
 172
 173                         if( ( $this->section != "new" ) &&
 174                                 ($this->mArticle->getTimestamp() != $this->edittime ) ) {
 175                                 $isConflict = true;
 176                         }
 177                         $userid = $wgUser->getID();
 178
 179                         $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 180                                 $this->section, $this->textbox1, $this->summary);
 181                         # Suppress edit conflict with self
 182
 183                         if ( ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 184                                 $isConflict = false;
 185                         } else {
 186                                 # switch from section editing to normal editing in edit conflict
 187                                 if($isConflict) {
 188                                         # Attempt merge
 189                                         if( $this->mergeChangesInto( $text ) ){
 190                                                 // Successful merge! Maybe we should tell the user the good news?
 191                                                 $isConflict = false;
 192                                         } else {
 193                                                 $this->section = "";
 194                                                 $this->textbox1 = $text;
 195                                         }
 196                                 }
 197                         }
 198                         if ( ! $isConflict ) {
 199                                 # All's well
 200                                 $sectionanchor = '';
 201                                 if( $this->section != '' ) {
 202                                         # Try to get a section anchor from the section source, redirect to edited section if header found
 203                                         # XXX: might be better to integrate this into Article::getTextOfLastEditWithSectionReplacedOrAdded
 204                                         # for duplicate heading checking and maybe parsing
 205                                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 206                                         # we can't deal with anchors, includes, html etc in the header for now,
 207                                         # headline would need to be parsed to improve this
 208                                         #if($hasmatch and strlen($matches[2]) > 0 and !preg_match( "/[\\['{<>]/", $matches[2])) {
 209                                         if($hasmatch and strlen($matches[2]) > 0) {
 210                                                 global $wgInputEncoding;
 211                                                 $headline = do_html_entity_decode( $matches[2], ENT_COMPAT, $wgInputEncoding );
 212                                                 # strip out HTML
 213                                                 $headline = preg_replace( "/<.*?" . ">/","",$headline );
 214                                                 $headline = trim( $headline );
 215                                                 $sectionanchor = '#'.urlencode( str_replace(' ', '_', $headline ) );
 216                                                 $replacearray = array(
 217                                                         '%3A' => ':',
 218                                                         '%' => '.'
 219                                                 );
 220                                                 $sectionanchor = str_replace(array_keys($replacearray),array_values($replacearray),$sectionanchor);
 221                                         }
 222                                 }
 223
 224                                 # update the article here
 225                                 if($this->mArticle->updateArticle( $text, $this->summary, $this->minoredit, $this->watchthis, '', $sectionanchor ))
 226                                         return;
 227                                 else
 228                                         $isConflict = true;
 229                         }
 230                 }
 231                 # First time through: get contents, set time for conflict
 232                 # checking, etc.
 233
 234                 if ( "initial" == $formtype ) {
 235                         $this->edittime = $this->mArticle->getTimestamp();
 236                         $this->textbox1 = $this->mArticle->getContent( true );
 237                         $this->summary = "";
 238                         $this->proxyCheck();
 239                 }
 240                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 241
 242                 # Enabled article-related sidebar, toplinks, etc.
 243                 $wgOut->setArticleRelated( true );
 244
 245                 if ( $isConflict ) {
 246                         $s = wfMsg( "editconflict", $this->mTitle->getPrefixedText() );
 247                         $wgOut->setPageTitle( $s );
 248                         $wgOut->addHTML( wfMsg( "explainconflict" ) );
 249
 250                         $this->textbox2 = $this->textbox1;
 251                         $this->textbox1 = $this->mArticle->getContent( true );
 252                         $this->edittime = $this->mArticle->getTimestamp();
 253                 } else {
 254                         $s = wfMsg( "editing", $this->mTitle->getPrefixedText() );
 255
 256                         if( $this->section != "" ) {
 257                                 if( $this->section == "new" ) {
 258                                         $s.=wfMsg("commentedit");
 259                                 } else {
 260                                         $s.=wfMsg("sectionedit");
 261                                 }
 262                                 if(!$this->preview) {
 263                                         $sectitle=preg_match("/^=+(.*?)=+/mi",
 264                                         $this->textbox1,
 265                                         $matches);
 266                                         if( !empty( $matches[1] ) ) {
 267                                                 $this->summary = "/* ". trim($matches[1])." */ ";
 268                                         }
 269                                 }
 270                         }
 271                         $wgOut->setPageTitle( $s );
 272                         if ( $this->oldid ) {
 273                                 $this->mArticle->setOldSubtitle();
 274                                 $wgOut->addHTML( wfMsg( "editingold" ) );
 275                         }
 276                 }
 277
 278                 if( wfReadOnly() ) {
 279                         $wgOut->addHTML( "<strong>" .
 280                         wfMsg( "readonlywarning" ) .
 281                         "</strong>" );
 282                 } else if ( $isCssJsSubpage and "preview" != $formtype) {
 283                         $wgOut->addHTML( wfMsg( "usercssjsyoucanpreview" ));
 284                 }
 285                 if( $this->mTitle->isProtected() ) {
 286                         $wgOut->addHTML( "<strong>" . wfMsg( "protectedpagewarning" ) .
 287                           "</strong><br />\n" );
 288                 }
 289
 290                 $kblength = (int)(strlen( $this->textbox1 ) / 1024);
 291                 if( $kblength > 29 ) {
 292                         $wgOut->addHTML( "<strong>" .
 293                                 wfMsg( "longpagewarning", $kblength )
 294                                 . "</strong>" );
 295                 }
 296
 297                 $rows = $wgUser->getOption( "rows" );
 298                 $cols = $wgUser->getOption( "cols" );
 299
 300                 $ew = $wgUser->getOption( "editwidth" );
 301                 if ( $ew ) $ew = " style=\"width:100%\"";
 302                 else $ew = "" ;
 303
 304                 $q = "action=submit";
 305                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 306                 $action = $this->mTitle->escapeLocalURL( $q );
 307
 308                 $summary = wfMsg( "summary" );
 309                 $subject = wfMsg("subject");
 310                 $minor = wfMsg( "minoredit" );
 311                 $watchthis = wfMsg ("watchthis");
 312                 $save = wfMsg( "savearticle" );
 313                 $prev = wfMsg( "showpreview" );
 314
 315                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
 316                                 wfMsg( "cancel" ) );
 317                 $edithelpurl = $sk->makeUrl( wfMsg( 'edithelppage' ));
 318                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
 319                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
 320                         htmlspecialchars( wfMsg( 'newwindow' ) );
 321
 322                 global $wgRightsText;
 323                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
 324                         wfMsg( $wgRightsText ? "copyrightwarning" : "copyrightwarning2",
 325                                 "[[" . wfMsg( "copyrightpage" ) . "]]",
 326                                 $wgRightsText ) . "\n</div>";
 327
 328                 if( $wgUser->getOption("showtoolbar") and !$isCssJsSubpage ) {
 329                         # prepare toolbar for edit buttons
 330                         $toolbar = $sk->getEditToolbar();
 331                 } else {
 332                         $toolbar = "";
 333                 }
 334
 335                 // activate checkboxes if user wants them to be always active
 336                 if( !$this->preview ) {
 337                         if( $wgUser->getOption( "watchdefault" ) ) $this->watchthis = true;
 338                         if( $wgUser->getOption( "minordefault" ) ) $this->minoredit = true;
 339
 340                         // activate checkbox also if user is already watching the page,
 341                         // require wpWatchthis to be unset so that second condition is not
 342                         // checked unnecessarily
 343                         if( !$this->watchthis && $this->mTitle->userIsWatching() ) $this->watchthis = true;
 344                 }
 345
 346                 $minoredithtml = "";
 347
 348                 if ( 0 != $wgUser->getID() || $wgAllowAnonymousMinor ) {
 349                         $minoredithtml =
 350                                 "<input tabindex='3' type='checkbox' value='1' name='wpMinoredit'".($this->minoredit?" checked='checked'":"").
 351                                 " accesskey='".wfMsg('accesskey-minoredit')."' id='wpMinoredit' />".
 352                                 "<label for='wpMinoredit' title='".wfMsg('tooltip-minoredit')."'>{$minor}</label>";
 353                 }
 354
 355                 $watchhtml = "";
 356
 357                 if ( 0 != $wgUser->getID() ) {
 358                         $watchhtml = "<input tabindex='4' type='checkbox' name='wpWatchthis'".($this->watchthis?" checked='checked'":"").
 359                                 " accesskey='".wfMsg('accesskey-watch')."' id='wpWatchthis'  />".
 360                                 "<label for='wpWatchthis' title='".wfMsg('tooltip-watch')."'>{$watchthis}</label>";
 361                 }
 362
 363                 $checkboxhtml = $minoredithtml . $watchhtml . "<br />";
 364
 365                 if ( "preview" == $formtype) {
 366                         $previewhead="<h2>" . wfMsg( "preview" ) . "</h2>\n<p><center><font color=\"#cc0000\">" .
 367                                 wfMsg( "note" ) . wfMsg( "previewnote" ) . "</font></center></p>\n";
 368                         if ( $isConflict ) {
 369                                 $previewhead.="<h2>" . wfMsg( "previewconflict" ) .
 370                                         "</h2>\n";
 371                         }
 372
 373                         $parserOptions = ParserOptions::newFromUser( $wgUser );
 374                         $parserOptions->setUseCategoryMagic( false );
 375                         $parserOptions->setEditSection( false );
 376                         $parserOptions->setEditSectionOnRightClick( false );
 377
 378                         # don't parse user css/js, show message about preview
 379                         # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
 380
 381                         if ( $isCssJsSubpage ) {
 382                                 if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
 383                                         $previewtext = wfMsg('usercsspreview');
 384                                 } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
 385                                         $previewtext = wfMsg('userjspreview');
 386                                 }
 387                                 $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
 388                                 $wgOut->addHTML( $parserOutput->mText );
 389                         } else {
 390                                 $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $this->textbox1 ) ."\n\n",
 391                                                 $wgTitle, $parserOptions );
 392                                 $previewHTML = $parserOutput->mText;
 393
 394                                 if($wgUser->getOption("previewontop")) {
 395                                         $wgOut->addHTML($previewhead);
 396                                         $wgOut->addHTML($previewHTML);
 397                                 }
 398                                 $wgOut->addCategoryLinks($parserOutput->getCategoryLinks());
 399                                 $wgOut->addLanguageLinks($parserOutput->getLanguageLinks());
 400                                 $wgOut->addHTML( "<br style=\"clear:both;\" />\n" );
 401                         }
 402                 }
 403
 404                 # if this is a comment, show a subject line at the top, which is also the edit summary.
 405                 # Otherwise, show a summary field at the bottom
 406                 $summarytext = htmlspecialchars( $wgLang->recodeForEdit( $this->summary ) ); # FIXME
 407                         if( $this->section == "new" ) {
 408                                 $commentsubject="{$subject}: <input tabindex='1' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 409                                 $editsummary = "";
 410                         } else {
 411                                 $commentsubject = "";
 412                                 $editsummary="{$summary}: <input tabindex='3' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 413                         }
 414
 415                 if( !$this->preview ) {
 416                 # Don't select the edit box on preview; this interferes with seeing what's going on.
 417                         $wgOut->setOnloadHandler( "document.editform.wpTextbox1.focus()" );
 418                 }
 419                 # Prepare a list of templates used by this page
 420                 $db =& wfGetDB( DB_SLAVE );
 421                 $cur = $db->tableName( 'cur' );
 422                 $links = $db->tableName( 'links' );
 423                 $id = $this->mTitle->getArticleID();
 424                 $sql = "SELECT cur_namespace,cur_title,cur_id ".
 425                         "FROM $cur,$links WHERE l_to=cur_id AND l_from={$id} and cur_namespace=".NS_TEMPLATE;
 426                 $res = $db->query( $sql, "EditPage::editform" );
 427
 428                 if ( $db->numRows( $res ) ) {
 429                         $templates = '<br />'. wfMsg( 'templatesused' ) . '<ul>';
 430                         while ( $row = $db->fetchObject( $res ) ) {
 431                                 if ( $titleObj = Title::makeTitle( $row->cur_namespace, $row->cur_title ) ) {
 432                                         $templates .= '<li>' . $sk->makeLinkObj( $titleObj ) . '</li>';
 433                                 }
 434                         }
 435                         $templates .= '</ul>';
 436                 }
 437                 $wgOut->addHTML( "
 438 {$toolbar}
 439 <form id=\"editform\" name=\"editform\" method=\"post\" action=\"$action\"
 440 enctype=\"application/x-www-form-urlencoded\">
 441 {$commentsubject}
 442 <textarea tabindex='1' accesskey=\",\" name=\"wpTextbox1\" rows='{$rows}'
 443 cols='{$cols}'{$ew}>" .
 444 htmlspecialchars( $wgLang->recodeForEdit( $this->textbox1 ) ) .
 445 "
 446 </textarea>
 447 <br />{$editsummary}
 448 {$checkboxhtml}
 449 <input tabindex='5' id='wpSave' type='submit' value=\"{$save}\" name=\"wpSave\" accesskey=\"".wfMsg('accesskey-save')."\"".
 450 " title=\"".wfMsg('tooltip-save')."\"/>
 451 <input tabindex='6' id='wpPreview' type='submit' value=\"{$prev}\" name=\"wpPreview\" accesskey=\"".wfMsg('accesskey-preview')."\"".
 452 " title=\"".wfMsg('tooltip-preview')."\"/>
 453 <em>{$cancel}</em> | <em>{$edithelp}</em>{$templates}" );
 454                 $wgOut->addWikiText( $copywarn );
 455                 $wgOut->addHTML( "
 456 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
 457 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n" );
 458
 459                 if ( $isConflict ) {
 460                         $wgOut->addHTML( "<h2>" . wfMsg( "yourdiff" ) . "</h2>\n" );
 461                         DifferenceEngine::showDiff( $this->textbox2, $this->textbox1,
 462                           wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 463
 464                         $wgOut->addHTML( "<h2>" . wfMsg( "yourtext" ) . "</h2>
 465 <textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
 466 . htmlspecialchars( $wgLang->recodeForEdit( $this->textbox2 ) ) .
 467 "
 468 </textarea>" );
 469                 }
 470                 $wgOut->addHTML( "</form>\n" );
 471                 if($formtype =="preview" && !$wgUser->getOption("previewontop")) {
 472                         $wgOut->addHTML($previewhead);
 473                         $wgOut->addHTML($previewHTML);
 474                 }
 475         }
 476
 477         function blockedIPpage()
 478         {
 479                 global $wgOut, $wgUser, $wgLang, $wgIP;
 480
 481                 $wgOut->setPageTitle( wfMsg( "blockedtitle" ) );
 482                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 483                 $wgOut->setArticleRelated( false );
 484
 485                 $id = $wgUser->blockedBy();
 486                 $reason = $wgUser->blockedFor();
 487                 $ip = $wgIP;
 488
 489                 if ( is_numeric( $id ) ) {
 490                         $name = User::whoIs( $id );
 491                 } else {
 492                         $name = $id;
 493                 }
 494                 $link = "[[" . $wgLang->getNsText( Namespace::getUser() ) .
 495                   ":{$name}|{$name}]]";
 496
 497                 $wgOut->addWikiText( wfMsg( "blockedtext", $link, $reason, $ip, $name ) );
 498                 $wgOut->returnToMain( false );
 499         }
 500
 501
 502
 503         function userNotLoggedInPage()
 504         {
 505                 global $wgOut, $wgUser, $wgLang;
 506
 507                 $wgOut->setPageTitle( wfMsg( "whitelistedittitle" ) );
 508                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 509                 $wgOut->setArticleRelated( false );
 510
 511                 $wgOut->addWikiText( wfMsg( "whitelistedittext" ) );
 512                 $wgOut->returnToMain( false );
 513         }
 514
 515         function spamPage ( $matches = array() )
 516         {
 517                 global $wgOut;
 518                 $wgOut->setPageTitle( wfMsg( "spamprotectiontitle" ) );
 519                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 520                 $wgOut->setArticleRelated( false );
 521
 522                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
 523                 if ( isset ( $matches[0] ) ) {
 524                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$matches[0]}</nowiki>" ) );
 525                 }
 526                 $wgOut->returnToMain( false );
 527         }
 528
 529         # Forks processes to scan the originating IP for an open proxy server
 530         # MemCached can be used to skip IPs that have already been scanned
 531         function proxyCheck()
 532         {
 533                 global $wgBlockOpenProxies, $wgProxyPorts, $wgProxyScriptPath;
 534                 global $wgIP, $wgUseMemCached, $wgMemc, $wgDBname, $wgProxyMemcExpiry;
 535
 536                 if ( !$wgBlockOpenProxies ) {
 537                         return;
 538                 }
 539
 540                 # Get MemCached key
 541                 $skip = false;
 542                 if ( $wgUseMemCached ) {
 543                         $mcKey = "$wgDBname:proxy:ip:$wgIP";
 544                         $mcValue = $wgMemc->get( $mcKey );
 545                         if ( $mcValue ) {
 546                                 $skip = true;
 547                         }
 548                 }
 549
 550                 # Fork the processes
 551                 if ( !$skip ) {
 552                         $title = Title::makeTitle( NS_SPECIAL, "Blockme" );
 553                         $iphash = md5( $wgIP . $wgProxyKey );
 554                         $url = $title->getFullURL( "ip=$iphash" );
 555
 556                         foreach ( $wgProxyPorts as $port ) {
 557                                 $params = implode( " ", array(
 558                                                         escapeshellarg( $wgProxyScriptPath ),
 559                                                         escapeshellarg( $wgIP ),
 560                                                         escapeshellarg( $port ),
 561                                                         escapeshellarg( $url )
 562                                                         ));
 563                                 exec( "php $params &>/dev/null &" );
 564                         }
 565                         # Set MemCached key
 566                         if ( $wgUseMemCached ) {
 567                                 $wgMemc->set( $mcKey, 1, $wgProxyMemcExpiry );
 568                         }
 569                 }
 570         }
 571
 572         /* private */ function mergeChangesInto( &$text ){
 573                 $fname = 'EditPage::mergeChangesInto';
 574                 $oldDate = $this->edittime;
 575                 $dbw =& wfGetDB( DB_MASTER );
 576                 $obj = $dbw->getArray( 'cur', array( 'cur_text' ), array( 'cur_id' => $this->mTitle->getArticleID() ),
 577                         $fname, 'FOR UPDATE' );
 578
 579                 $yourtext = $obj->cur_text;
 580                 $ns = $this->mTitle->getNamespace();
 581                 $title = $this->mTitle->getDBkey();
 582                 $obj = $dbw->getArray( 'old',
 583                         array( 'old_text','old_flags'),
 584                         array( 'old_namespace' => $ns, 'old_title' => $title,
 585                                 'old_timestamp' => $dbw->timestamp($oldDate)),
 586                         $fname );
 587                 $oldText = Article::getRevisionText( $obj );
 588
 589                 if(wfMerge($oldText, $text, $yourtext, $result)){
 590                         $text = $result;
 591                         return true;
 592                 } else {
 593                         return false;
 594                 }
 595         }
 596 }
 597
 598 ?>