From: River Tarnell <kateturner@users.mediawiki.org>
Date: Sat, 23 Jul 2005 05:47:25 +0000 (+0000)
Subject: (bug 796) trackback support
X-Git-Tag: 1.5.0beta4~55
X-Git-Url: http://git.cyclocoop.org/?a=commitdiff_plain;h=bc36d810e796739c2bc5e8fec70a5c5bf530b21e;p=lhc%2Fweb%2Fwiklou.git

(bug 796) trackback support
---

diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index 8069d8fd8e..bfa7b44893 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -595,6 +595,7 @@ of MediaWiki:Newpagetext) to &action=edit, if page is new.
 * (bug 740) Messages from extensions now appear in Special:Allmessages
 * (bug 2857) fixed parsing of lists in <pre> sections
 * Now sorting interwiki links by iw_prefix and avoiding duplicates
+* (bug 796) Trackback support
 
 === Caveats ===
 
diff --git a/includes/Article.php b/includes/Article.php
index 3c1c3eb950..75cd20c9a2 100644
--- a/includes/Article.php
+++ b/includes/Article.php
@@ -94,10 +94,10 @@ class Article {
 		if ( 0 == $this->getID() ) {
 			if ( 'edit' == $action ) {
 				wfProfileOut( $fname );
-				
+
 				# If requested, preload some text.
 				$text=$this->getPreloadedText($preload);
-				
+
 				# We used to put MediaWiki:Newarticletext here if
 				# $text was empty at this point.
 				# This is now shown above the edit box instead.
@@ -154,7 +154,7 @@ class Article {
 		}
 		return '';
 	}
-	
+
 	/**
 	 * This function returns the text of a section, specified by a number ($section).
 	 * A section is text under a heading like == Heading == or <h1>Heading</h1>, or
@@ -678,7 +678,7 @@ class Article {
 	function view()	{
 		global $wgUser, $wgOut, $wgRequest, $wgOnlySysopsCanPatrol, $wgLang;
 		global $wgLinkCache, $IP, $wgEnableParserCache, $wgStylePath, $wgUseRCPatrol;
-		global $wgEnotif, $wgParser, $wgParserCache;
+		global $wgEnotif, $wgParser, $wgParserCache, $wgUseTrackbacks;
 		$sk = $wgUser->getSkin();
 
 		$fname = 'Article::view';
@@ -835,6 +835,10 @@ class Article {
 			 );
 		}
 
+		# Trackbacks
+		if ($wgUseTrackbacks)
+			$this->addTrackbacks();
+
 		# Put link titles into the link cache
 		$wgOut->transformBuffer();
 
@@ -845,6 +849,30 @@ class Article {
 		wfProfileOut( $fname );
 	}
 
+	function addTrackbacks() {
+		global $wgOut;
+
+		$dbr = wfGetDB(DB_SLAVE);
+		$tbs = $dbr->select(
+				/* FROM   */ 'trackbacks',
+				/* SELECT */ array('tb_title', 'tb_url', 'tb_ex', 'tb_name'),
+				/* WHERE  */ array('tb_id' => $this->getID())
+		);
+
+		if (!$dbr->numrows($tbs))
+			return;
+
+		$tbtext = "";
+		while ($o = $dbr->fetchObject($tbs)) {
+			$tbtext .= wfMsg(strlen($o->tb_ex) ? 'trackbackexcerpt' : 'trackback',
+					$o->tb_title,
+					$o->tb_url,
+					$o->tb_ex,
+					$o->tb_name);
+		}
+		$wgOut->addWikitext(wfMsg('trackbackbox', $tbtext));
+	}
+
 	function render() {
 		global $wgOut;
 
@@ -979,7 +1007,7 @@ class Article {
 
 		$ns = $this->mTitle->getNamespace();
 		$ttl = $this->mTitle->getDBkey();
-		
+
 		# If this is a comment, add the summary as headline
 		if($comment && $summary!="") {
 			$text="== {$summary} ==\n\n".$text;
@@ -1233,7 +1261,7 @@ class Article {
 				array_push( $wgPostCommitUpdateList, $u );
 			}
 
-			# File cache	
+			# File cache
 			if ( $wgUseFileCache ) {
 				$cm = new CacheManager($this->mTitle);
 				@unlink($cm->fileCacheName());
@@ -2403,9 +2431,6 @@ class Article {
 		$db->freeResult( $res );
 		return $result;
 	}
-
-
 }
 
-
 ?>
diff --git a/includes/DefaultSettings.php b/includes/DefaultSettings.php
index c571df2187..cacbf1d487 100644
--- a/includes/DefaultSettings.php
+++ b/includes/DefaultSettings.php
@@ -1588,4 +1588,10 @@ $wgHTTPProxy = false;
  */
 $wgEnableScaryTranscluding = false;
 
+/**
+ * Support blog-style "trackbacks" for articles.  See
+ * http://www.sixapart.com/pronet/docs/trackback_spec for details.
+ */
+$wgUseTrackbacks = false;
+
 ?>
diff --git a/includes/OutputPage.php b/includes/OutputPage.php
index 36e5871365..8ebde39adf 100644
--- a/includes/OutputPage.php
+++ b/includes/OutputPage.php
@@ -791,7 +791,7 @@ class OutputPage {
 	 */
 	function headElement() {
 		global $wgDocType, $wgDTD, $wgContLanguageCode, $wgOutputEncoding, $wgMimeType;
-		global $wgUser, $wgContLang, $wgRequest;
+		global $wgUser, $wgContLang, $wgRequest, $wgUseTrackbacks, $wgTitle;
 
 		if( $wgMimeType == 'text/xml' || $wgMimeType == 'application/xhtml+xml' || $wgMimeType == 'application/xml' ) {
 			$ret = "<?xml version=\"1.0\" encoding=\"$wgOutputEncoding\" ?>\n";
@@ -825,6 +825,9 @@ class OutputPage {
 		$ret .= $this->mScripts;
 		$ret .= $sk->getUserStyles();
 
+		if ($wgUseTrackbacks && $this->isArticleRelated())
+			$ret .= $wgTitle->trackbackRDF();
+
 		$ret .= "</head>\n";
 		return $ret;
 	}
diff --git a/includes/Skin.php b/includes/Skin.php
index d2de740170..712a216573 100644
--- a/includes/Skin.php
+++ b/includes/Skin.php
@@ -108,7 +108,7 @@ class Skin extends Linker {
 
 	function addMetadataLinks( &$out ) {
 		global $wgTitle, $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf, $wgRdfMimeType, $action;
-		global $wgRightsPage, $wgRightsUrl;
+		global $wgRightsPage, $wgRightsUrl, $wgUseTrackbacks;
 
 		if( $out->isArticleRelated() ) {
 			# note: buggy CC software only reads first "meta" link
@@ -732,7 +732,7 @@ END;
 	}
 
 	function bottomLinks() {
-		global $wgOut, $wgUser, $wgTitle;
+		global $wgOut, $wgUser, $wgTitle, $wgUseTrackbacks;
 		$sep = " |\n";
 
 		$s = '';
@@ -746,6 +746,9 @@ END;
 			  . $sep . $this->whatLinksHere()
 			  . $sep . $this->watchPageLinksLink();
 
+			if ($wgUseTrackbacks)
+				$s .= $sep . $this->trackbackLink();
+
 			if ( $wgTitle->getNamespace() == NS_USER
 			    || $wgTitle->getNamespace() == NS_USER_TALK )
 
@@ -1113,6 +1116,13 @@ END;
 		}
 	}
 
+	function trackbackLink() {
+		global $wgTitle;
+
+		return "<a href=\"" . $wgTitle->trackbackURL() . "\">"
+			. wfMsg('trackbacklink') . "</a>";
+	}
+
 	function otherLanguages() {
 		global $wgOut, $wgContLang, $wgTitle, $wgHideInterlanguageLinks;
 
diff --git a/includes/SkinTemplate.php b/includes/SkinTemplate.php
index 775c7783b1..5ea7c37dfe 100644
--- a/includes/SkinTemplate.php
+++ b/includes/SkinTemplate.php
@@ -149,6 +149,7 @@ class SkinTemplate extends Skin {
 		global $wgDisableCounters, $wgLogo, $action, $wgFeedClasses, $wgHideInterlanguageLinks;
 		global $wgMaxCredits, $wgShowCreditsIfMax;
 		global $wgPageShowWatchingUsers;
+		global $wgUseTrackbacks;
 
 		$fname = 'SkinTemplate::outputPage';
 		wfProfileIn( $fname );
@@ -217,6 +218,9 @@ class SkinTemplate extends Skin {
 		} else {
 			$tpl->set( 'feeds', false );
 		}
+		if ($wgUseTrackbacks && $out->isArticleRelated())
+			$tpl->set( 'trackbackhtml', $wgTitle->trackbackRDF());
+
 		$tpl->setRef( 'mimetype', $wgMimeType );
 		$tpl->setRef( 'jsmimetype', $wgJsMimeType );
 		$tpl->setRef( 'charset', $wgOutputEncoding );
@@ -721,6 +725,8 @@ class SkinTemplate extends Skin {
 	 * @access private
 	 */
 	function buildNavUrls () {
+		global $wgUseTrackbacks, $wgTitle;
+
 		$fname = 'SkinTemplate::buildNavUrls';
 		wfProfileIn( $fname );
 
@@ -768,6 +774,10 @@ class SkinTemplate extends Skin {
 			$nav_urls['recentchangeslinked'] = array(
 				'href' => $this->makeSpecialUrl("Recentchangeslinked/$this->thispage")
 			);
+			if ($wgUseTrackbacks)
+				$nav_urls['trackbacklink'] = array(
+					'href' => $wgTitle->trackbackURL()
+				);
 		}
 
 		if( $this->mTitle->getNamespace() == NS_USER || $this->mTitle->getNamespace() == NS_USER_TALK ) {
diff --git a/includes/SpecialPage.php b/includes/SpecialPage.php
index 64bf918049..869ccafe1a 100644
--- a/includes/SpecialPage.php
+++ b/includes/SpecialPage.php
@@ -33,7 +33,7 @@ $wgSpecialPages = array(
 	'Userlogout'        => new UnlistedSpecialPage( 'Userlogout' ),
 	'Preferences'       => new SpecialPage( 'Preferences' ),
 	'Watchlist'         => new SpecialPage( 'Watchlist' ),
-	
+
 	'Recentchanges'     => new IncludableSpecialPage( 'Recentchanges' ),
 	'Upload'            => new SpecialPage( 'Upload' ),
 	'Imagelist'         => new SpecialPage( 'Imagelist' ),
@@ -134,11 +134,11 @@ class SpecialPage
 	 * Whether the special page can be included in an article
 	 */
 	var $mIncludable;
-	
+
 
 	/**#@-*/
 
-	
+
 	/**
 	 * Add a page to the list of valid special pages
 	 * $obj->execute() must send HTML to $wgOut then return
@@ -173,7 +173,7 @@ class SpecialPage
 			return NULL;
 		}
 	}
-	
+
 	/**
 	 * @static
 	 * @param string $name
@@ -223,7 +223,7 @@ class SpecialPage
 	 * The path	may contain parameters, e.g. Special:Name/Params
 	 * Extracts the special page name and call the execute method, passing the parameters
 	 *
-	 * Returns a title object if the page is redirected, false if there was no such special 
+	 * Returns a title object if the page is redirected, false if there was no such special
 	 * page, and true if it was successful.
 	 *
 	 * @param $title          a title object
@@ -247,7 +247,7 @@ class SpecialPage
 			} else {
 				$redir =& SpecialPage::getRedirect( $name );
 				if ( isset( $redir ) ) {
-					if ( isset( $par ) ) 
+					if ( isset( $par ) )
 						$wgOut->redirect( $redir->getFullURL() . '/' . $par );
 					else
 						$wgOut->redirect( $redir->getFullURL() );
@@ -288,7 +288,7 @@ class SpecialPage
 		$oldTitle = $wgTitle;
 		$oldOut = $wgOut;
 		$wgOut = new OutputPage;
-		
+
 		$ret = SpecialPage::executePath( $title, true );
 		if ( $ret === true ) {
 			$ret = $wgOut->getHTML();
@@ -337,7 +337,7 @@ class SpecialPage
 	function isListed() { return $this->mListed; }
 	function getFile() { return $this->mFile; }
 	function including( $x = NULL ) { return wfSetVar( $this->mIncluding, $x ); }
-	function includable( $x = NULL ) { return wfSetVar( $this->mIncludable, $x ); } 
+	function includable( $x = NULL ) { return wfSetVar( $this->mIncludable, $x ); }
 
 	/**
 	 * Checks if the given user (identified by an object) can execute this
diff --git a/includes/Title.php b/includes/Title.php
index 0eadae64ef..f0a4c9d96f 100644
--- a/includes/Title.php
+++ b/includes/Title.php
@@ -2079,5 +2079,29 @@ class Title {
 		$dbw->update( 'page', /* SET */ array( 'page_touched' => $dbw->timestamp() ),
 							/* WHERE */ array( 'page_id' => $toucharr ),$fname);
 	}
+
+	function trackbackURL() {
+		global $wgTitle, $wgScriptPath, $wgServer;
+
+		return "$wgServer$wgScriptPath/trackback.php?article="
+			. htmlspecialchars(urlencode($wgTitle->getPrefixedDBkey()));
+	}
+
+	function trackbackRDF() {
+		$url = htmlspecialchars($this->getFullURL());
+		$title = htmlspecialchars($this->getText());
+		$tburl = $this->trackbackURL();
+
+		return "
+<rdf:RDF xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"
+         xmlns:dc=\"http://purl.org/dc/elements/1.1/\"
+         xmlns:trackback=\"http://madskills.com/public/xml/rss/module/trackback/\">
+<rdf:Description
+   rdf:about=\"$url\"
+   dc:identifier=\"$url\"
+   dc:title=\"$title\"
+   trackback:ping=\"$tburl\" />
+</rdf:RDF>";
+	}
 }
 ?>
diff --git a/languages/Language.php b/languages/Language.php
index bd99de1233..884108335f 100644
--- a/languages/Language.php
+++ b/languages/Language.php
@@ -637,10 +637,10 @@ to confirm that the account is actually yours.",
 'emailauthenticated'        => 'Your email address was authenticated on $1.',
 'emailnotauthenticated'     => 'Your email address is <strong>not yet authenticated</strong>. No email
 will be sent for any of the following features.',
-'noemailprefs'              => '<strong>No email address has been specified</strong>, the following 
+'noemailprefs'              => '<strong>No email address has been specified</strong>, the following
 features will not work.',
 'emailconfirmlink' => 'Confirm your e-mail address',
-'invalidemailaddress'	=> 'The email address cannot be accepted as it appears to have an invalid 
+'invalidemailaddress'	=> 'The email address cannot be accepted as it appears to have an invalid
 format. Please enter a well-formatted address or empty that field.',
 
 # Edit page toolbar
@@ -2121,6 +2121,15 @@ will expire at $4.
 'scarytranscludefailed' => '[Template fetch failed for $1; sorry]',
 'scarytranscludetoolong' => '[URL is too long; sorry]',
 
+# Trackbacks
+'trackbackbox' => "<div id='mw_trackbacks'>
+Trackbacks for this article:<br/>
+$1
+</div>
+",
+'trackback' => "; $4 : [$2 $1]</li>\n",
+'trackbackexcerpt' => "; $4 : [$2 $1]: <nowiki>$3</nowiki></li>\n",
+'trackbacklink' => 'Trackback',
 );
 
 /* a fake language converter */
diff --git a/maintenance/archives/patch-trackbacks.sql b/maintenance/archives/patch-trackbacks.sql
new file mode 100644
index 0000000000..93e36628f2
--- /dev/null
+++ b/maintenance/archives/patch-trackbacks.sql
@@ -0,0 +1,9 @@
+CREATE TABLE /*$wgDBprefix*/trackbacks (
+	tb_id		INTEGER REFERENCES page(page_id) ON DELETE CASCADE,
+	tb_title	VARCHAR(255) NOT NULL,
+	tb_url		VARCHAR(255) NOT NULL,
+	tb_ex		TEXT,
+	tb_name		VARCHAR(255),
+
+	INDEX (tb_id)
+);
diff --git a/maintenance/tables.sql b/maintenance/tables.sql
index dc508b8cc7..fc1753313a 100644
--- a/maintenance/tables.sql
+++ b/maintenance/tables.sql
@@ -829,3 +829,14 @@ CREATE TABLE /*$wgDBprefix*/logging (
 --  PRIMARY KEY  (gr_id)
 --
 --) TYPE=InnoDB;
+
+CREATE TABLE /*$wgDBprefix*/trackbacks (
+        tb_id           INTEGER REFERENCES page(page_id) ON DELETE CASCADE,
+        tb_title        VARCHAR(255) NOT NULL,
+        tb_url          VARCHAR(255) NOT NULL,
+        tb_ex           TEXT,
+        tb_name         VARCHAR(255),
+
+        INDEX (tb_id)
+);
+
diff --git a/maintenance/updaters.inc b/maintenance/updaters.inc
index 82b1301929..c2034ce9a9 100644
--- a/maintenance/updaters.inc
+++ b/maintenance/updaters.inc
@@ -25,6 +25,7 @@ $wgNewTables = array(
 	array( 'validate',      'patch-validate.sql' ),
 	array( 'user_newtalk',  'patch-usernewtalk2.sql' ),
 	array( 'transcache',	'patch-transcache.sql' ),
+	array( 'trackbacks',	'patch-trackbacks.sql' ),
 );
 
 $wgNewFields = array(
diff --git a/skins/MonoBook.php b/skins/MonoBook.php
index 5d94cff2e0..17a952d106 100644
--- a/skins/MonoBook.php
+++ b/skins/MonoBook.php
@@ -68,6 +68,7 @@ class MonoBookTemplate extends QuickTemplate {
     <?php if($this->data['usercss'   ]) { ?><style type="text/css"><?php              $this->html('usercss'   ) ?></style><?php    } ?>
     <?php if($this->data['userjs'    ]) { ?><script type="<?php $this->text('jsmimetype') ?>" src="<?php $this->text('userjs'    ) ?>"></script><?php } ?>
     <?php if($this->data['userjsprev']) { ?><script type="<?php $this->text('jsmimetype') ?>"><?php      $this->html('userjsprev') ?></script><?php   } ?>
+    <?php if($this->data['trackbackhtml']) print $this->data['trackbackhtml']; ?>
   </head>
   <body <?php if($this->data['body_ondblclick']) { ?>ondblclick="<?php $this->text('body_ondblclick') ?>"<?php } ?>
         <?php if($this->data['body_onload'    ]) { ?>onload="<?php     $this->text('body_onload')     ?>"<?php } ?>
@@ -158,9 +159,14 @@ class MonoBookTemplate extends QuickTemplate {
 	    <ul>
 		  <?php if($this->data['notspecialpage']) { foreach( array( 'whatlinkshere', 'recentchangeslinked' ) as $special ) { ?>
 		  <li id="t-<?php echo $special?>"><a href="<?php
-		    echo htmlspecialchars($this->data['nav_urls'][$special]['href']) 
+		    echo htmlspecialchars($this->data['nav_urls'][$special]['href'])
 		    ?>"><?php echo $this->msg($special) ?></a></li>
 		  <?php } } ?>
+              <?php if(isset($this->data['nav_urls']['trackbacklink'])) { ?>
+		  <li id="t-trackbacklink"><a href="<?php
+		    echo htmlspecialchars($this->data['nav_urls']['trackbacklink']['href'])
+		    ?>"><?php echo $this->msg('trackbacklink') ?></a></li>
+	      <?php } ?>
 	      <?php if($this->data['feeds']) { ?><li id="feedlinks"><?php foreach($this->data['feeds'] as $key => $feed) {
 	        ?><span id="feed-<?php echo htmlspecialchars($key) ?>"><a href="<?php
 	        echo htmlspecialchars($feed['href']) ?>"><?php echo htmlspecialchars($feed['text'])?></a>&nbsp;</span>
@@ -172,7 +178,7 @@ class MonoBookTemplate extends QuickTemplate {
 	      <?php } ?>
 	      <?php if(!empty($this->data['nav_urls']['print']['href'])) { ?>
 	      <li id="t-print"><a href="<?php
-		    echo htmlspecialchars($this->data['nav_urls']['print']['href']) 
+		    echo htmlspecialchars($this->data['nav_urls']['print']['href'])
 		    ?>"><?php echo $this->msg('printableversion') ?></a></li>
 	      <?php } ?>
 	    </ul>
diff --git a/skins/common/common.css b/skins/common/common.css
index 71bed995c4..d73d1399a7 100644
--- a/skins/common/common.css
+++ b/skins/common/common.css
@@ -1,4 +1,4 @@
-/* 
+/*
  * common.css
  * This file contains CSS settings common to Wikistandard, Nostalgia and CologneBlue
  */
@@ -38,7 +38,7 @@ div.thumb div {
     text-align: center;
     overflow: hidden;
 }
-div.thumb div * { 
+div.thumb div * {
     border: none;
     background: none;
 }
@@ -68,13 +68,13 @@ div.tleft {
 /* Page history styling */
 /* the auto-generated edit comments */
 .autocomment { color: #4b4b4b; }
-#pagehistory span.user { 
+#pagehistory span.user {
     margin-left: 1.4em;
     margin-right: 0.4em;
 }
 #pagehistory span.minor { font-weight: bold; }
 #pagehistory li { border: 1px solid White; }
-#pagehistory li.selected { 
+#pagehistory li.selected {
     background-color:#f9f9f9;
     border:1px dashed #aaaaaa;
 }
@@ -82,11 +82,11 @@ div.tleft {
 table.diff { background:white; }
 td.diff-otitle { background:#cccccc; }
 td.diff-ntitle { background:#cccccc; }
-td.diff-addedline { 
+td.diff-addedline {
     background:#ccffcc;
     font-size: 94%;
 }
-td.diff-deletedline { 
+td.diff-deletedline {
     background:#ffffaa;
     font-size: 94%;
 }
@@ -141,13 +141,13 @@ span.texhtml { font-family: serif; }
 }
 
 /* preference page with js-genrated toc */
-#preftoc { 
+#preftoc {
     float: left;
     margin: 1em 1em 1em 1em;
     width: 13em;
 }
 #preftoc li { border: 1px solid White; }
-#preftoc li.selected { 
+#preftoc li.selected {
     background-color:#f9f9f9;
     border:1px dashed #aaaaaa;
 }
@@ -156,12 +156,12 @@ span.texhtml { font-family: serif; }
     display: block;
     color: #005189;
 }
-#prefcontrol { 
+#prefcontrol {
     clear: left;
     float: left;
     margin-top: 1em;
 }
-div.prefsectiontip { 
+div.prefsectiontip {
     font-size: 94%;
     margin-top: 1em;
 }
@@ -194,7 +194,7 @@ div.townBox {
 }
 div.townBox dl {
     padding: 0;
-    margin: 0 0 0.3em 0; 
+    margin: 0 0 0.3em 0;
     font-size: 96%;
 }
 div.townBox dl dt {
@@ -206,7 +206,7 @@ div.townBox dl dd {
     background-color: #f3f3f3;
 }
 /* use this instead of #toc for page content */
-.toccolours { 
+.toccolours {
     border:1px solid #aaaaaa;
     background-color:#f9f9f9;
     padding:5px;
@@ -254,7 +254,7 @@ table.gallery {
         background-color:#ffffff;
 }
 
-table.gallery tr { 
+table.gallery tr {
         vertical-align:top;
 }
 
@@ -273,12 +273,12 @@ div.gallerybox div.thumb {
         text-align: center;
         border: 1px solid #cccccc;
         margin: 2px;
-}       
+}
 
 div.gallerytext {
         font-size: 94%;
         padding: 2px 4px;
-}       
+}
 
 span.comment {
 	font-style: italic;
@@ -348,3 +348,9 @@ table.exif td.spacer {
 .visualClear {
     clear: both;
 }
+
+#mw_trackbacks {
+	border: solid 1px #bbbbff;
+	background-color: #eeeeff;
+	padding: 0.2em;
+}
diff --git a/skins/monobook/main.css b/skins/monobook/main.css
index 318b16c097..ff04c7de6e 100644
--- a/skins/monobook/main.css
+++ b/skins/monobook/main.css
@@ -219,7 +219,7 @@ pre {
 */
 
 #siteSub {
-    display: none; 
+    display: none;
 }
 #contentSub {
     font-size: 84%;
@@ -1078,7 +1078,7 @@ span.changedby {
 	float: left;
 	font-size: small;
 	text-align: center;
-}    
+}
 .editExternallyHelp {
 	font-style: italic;
 	color: gray;
@@ -1181,3 +1181,9 @@ p.revision_saved {
 	color: green;
 	font-weight:bold;
 }
+
+#mw_trackbacks {
+	border: solid 1px #bbbbff;
+	background-color: #eeeeff;
+	padding: 0.2em;
+}
diff --git a/trackback.php b/trackback.php
new file mode 100644
index 0000000000..726cacba41
--- /dev/null
+++ b/trackback.php
@@ -0,0 +1,75 @@
+<?php
+/**
+ * Provide functions to handle article trackbacks.
+ * @package MediaWiki
+ * @subpackage SpecialPage
+ */
+
+unset($IP);
+define('MEDIAWIKI', true);
+require_once('./includes/Defines.php');
+
+if (!file_exists('LocalSettings.php'))
+	exit;
+
+require_once('./LocalSettings.php');
+require_once('includes/Setup.php');
+
+require_once('Title.php');
+require_once('DatabaseFunctions.php');
+
+/**
+ *
+ */
+function XMLsuccess() {
+	echo "
+<?xml version=\"1.0\" encoding=\"utf-8\"?>
+<response>
+<error>0</error>
+</response>
+	";
+	exit;
+}
+
+function XMLerror($err = "Invalid request.") {
+	header("HTTP/1.0 400 Bad Request");
+	echo "
+<?xml version=\"1.0\" encoding=\"utf-8\"?>
+<response>
+<error>1</error>
+<message>Invalid request: $err</message>
+</response>
+";
+		exit;
+}
+
+if (!$wgUseTrackbacks)
+	XMLerror("Trackbacks are disabled.");
+
+if (   !isset($_POST['url'])
+    || !isset($_POST['blog_name'])
+    || !isset($_REQUEST['article']))
+	XMLerror("Required field not specified");
+
+$dbw =& wfGetDB(DB_MASTER);
+
+$tbtitle = $_POST['title'];
+$tbex = $_POST['excerpt'];
+$tburl = $_POST['url'];
+$tbname = $_POST['blog_name'];
+$tbarticle = $_REQUEST['article'];
+
+$title = Title::newFromText($tbarticle);
+if (!$title->exists())
+	XMLerror("Specified article does not exist.");
+
+$dbw->insert('trackbacks', array(
+	'tb_id'	=> $title->getArticleID(),
+	'tb_title' => $tbtitle,
+	'tb_url' => $tburl,
+	'tb_ex' => $tbex,
+	'tb_name' => $tbname
+));
+
+XMLsuccess();
+exit;