### Eclipse Workspace Patch 1.0
#P mvw-exp
Index: includes/Skin.php
===================================================================
--- includes/Skin.php	(revision 49448)
+++ includes/Skin.php	(working copy)
@@ -343,6 +343,7 @@
 		global $wgVersion, $wgEnableAPI, $wgEnableWriteAPI;
 		global $wgRestrictionTypes, $wgLivePreview;
 		global $wgMWSuggestTemplate, $wgDBname, $wgEnableMWSuggest;
+	
 
 		$ns = $wgTitle->getNamespace();
 		$nsname = isset( $wgCanonicalNamespaceNames[ $ns ] ) ? $wgCanonicalNamespaceNames[ $ns ] : $wgTitle->getNsText();
@@ -386,9 +387,16 @@
 			'wgEnableAPI' => $wgEnableAPI,
 			'wgEnableWriteAPI' => $wgEnableWriteAPI,
 			'wgSeparatorTransformTable' => $compactSeparatorTransTable,
-			'wgDigitTransformTable' => $compactDigitTransTable,
+			'wgDigitTransformTable' => $compactDigitTransTable,			
 		);
 		
+		//if on upload page output the extension list:
+		if( SpecialPage::resolveAlias( $wgTitle->getDBkey() ) ==  "Upload" ){ 
+			global $wgFileExtensions;
+			$vars['wgFileExtensions'] = $wgFileExtensions;
+		}
+		
+		
 		if( $wgUseAjax && $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ){
 			$vars['wgMWSuggestTemplate'] = SearchEngine::getMWSuggestTemplate();
 			$vars['wgDBname'] = $wgDBname;
Index: skins/common/upload.js
===================================================================
--- skins/common/upload.js	(revision 49448)
+++ skins/common/upload.js	(working copy)
@@ -118,6 +118,14 @@
 	if (!document.getElementById) {
 		return;
 	}
+	
+	//remove any previously flagged errors
+	var e = document.getElementById('mw-upload-permitted');
+	if(e) e. className = '';
+	
+	var e = document.getElementById('mw-upload-prohibited');
+	if(e) e.className = '';
+	
 	var path = document.getElementById(id).value;
 	// Find trailing part
 	var slash = path.lastIndexOf('/');
@@ -130,7 +138,34 @@
 	} else {
 		fname = path.substring(backslash+1, 10000);
 	}
-
+	//check for the wgFileExtensions and clear if not a valid fname extension
+	if( wgFileExtensions ){		
+		var found = false;		
+		if( fname.lastIndexOf('.')!=-1 ){		
+			var ext = fname.substr( fname.lastIndexOf('.')+1 );			
+			for(var i=0; i < wgFileExtensions.length; i++){						
+				if( wgFileExtensions[i] == ext )
+					found = true;
+			}
+		}
+		if(!found){
+			//clear the upload set mw-upload-permitted to error
+			document.getElementById(id).value = '';
+			var e = document.getElementById('mw-upload-permitted');
+			if(e) e. className = 'error';
+			
+			var e = document.getElementById('mw-upload-prohibited');
+			if(e) e.className = 'error';
+			
+			//clear the wpDestFile as well: 
+			var e = document.getElementById('wpDestFile')
+			if(e) e.value = '';
+			
+			//return false
+			return false;
+		}
+	}	
+	
 	// Capitalise first letter and replace spaces by underscores
 	fname = fname.charAt(0).toUpperCase().concat(fname.substring(1,10000)).replace(/ /g, '_');