includes/EditPage.php

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