diff --git a/apps/files_encryption/lib/proxy.php b/apps/files_encryption/lib/proxy.php
index 7974d68d48..c53d567ad1 100644
--- a/apps/files_encryption/lib/proxy.php
+++ b/apps/files_encryption/lib/proxy.php
@@ -115,4 +115,8 @@ class OC_FileProxy_Encryption extends OC_FileProxy{
 			return false;//cancel the original request
 		}
 	}
+
+	public function postGetMimeType($path,$mime){
+		return OC_Helper::getMimeType('crypt://'.$path,'w');
+	}
 }
diff --git a/lib/filestorage/local.php b/lib/filestorage/local.php
index de1f83e3e1..6f4f68c503 100644
--- a/lib/filestorage/local.php
+++ b/lib/filestorage/local.php
@@ -122,50 +122,9 @@ class OC_Filestorage_Local extends OC_Filestorage{
 		return $return;
 	}
 
-	public function getMimeType($fspath){
-		if($this->is_readable($fspath)){
-			$mimeType='application/octet-stream';
-			if ($mimeType=='application/octet-stream') {
-				self::$mimetypes = include('mimetypes.fixlist.php');
-				$extention=strtolower(strrchr(basename($fspath), "."));
-				$extention=substr($extention,1);//remove leading .
-				$mimeType=(isset(self::$mimetypes[$extention]))?self::$mimetypes[$extention]:'application/octet-stream';
-				
-			}
-			if (@is_dir($this->datadir.$fspath)) {
-				// directories are easy
-				return "httpd/unix-directory";
-			}
-			if($mimeType=='application/octet-stream' and function_exists('finfo_open') and function_exists('finfo_file') and $finfo=finfo_open(FILEINFO_MIME)){
-				$mimeType =strtolower(finfo_file($finfo,$this->datadir.$fspath));
-				$mimeType=substr($mimeType,0,strpos($mimeType,';'));
-				finfo_close($finfo);
-			}
-			if ($mimeType=='application/octet-stream' && function_exists("mime_content_type")) {
-				// use mime magic extension if available
-				$mimeType = mime_content_type($this->datadir.$fspath);
-			}
-			if ($mimeType=='application/octet-stream' && OC_Helper::canExecute("file")) {
-				// it looks like we have a 'file' command,
-				// lets see it it does have mime support
-				$fspath=str_replace("'","\'",$fspath);
-				$fp = popen("file -i -b '{$this->datadir}$fspath' 2>/dev/null", "r");
-				$reply = fgets($fp);
-				pclose($fp);
-
-				//trim the character set from the end of the response
-				$mimeType=substr($reply,0,strrpos($reply,' '));
-			}
-			if ($mimeType=='application/octet-stream') {
-				// Fallback solution: (try to guess the type by the file extension
-				if(!self::$mimetypes || self::$mimetypes != include('mimetypes.list.php')){
-					self::$mimetypes=include('mimetypes.list.php');
-				}
-				$extention=strtolower(strrchr(basename($fspath), "."));
-				$extention=substr($extention,1);//remove leading .
-				$mimeType=(isset(self::$mimetypes[$extention]))?self::$mimetypes[$extention]:'application/octet-stream';
-			}
-			return $mimeType;
+	public function getMimeType($path){
+		if($this->is_readable($path)){
+			return OC_Helper::getMimeType($this->datadir.$path);
 		}else{
 			return false;
 		}
diff --git a/lib/helper.php b/lib/helper.php
index 2f71bdad2d..6dea4a6a8c 100644
--- a/lib/helper.php
+++ b/lib/helper.php
@@ -25,6 +25,8 @@
  * Collection of useful functions
  */
 class OC_Helper {
+	private static $mimetypes=array();
+	
 	/**
 	 * @brief Creates an url
 	 * @param $app app
@@ -267,6 +269,62 @@ class OC_Helper {
 			unlink($dir);
 		}
 	}
+
+	/**
+	 * get the mimetype form a local file
+	 * @param string path
+	 * @return string
+	 * does NOT work for ownClouds filesystem, use OC_FileSystem::getMimeType instead
+	 */
+	static function getMimeType($path){
+		$isWrapped=(strpos($path,'://')!==false) and (substr($path,0,7)=='file://');
+		$mimeType='application/octet-stream';
+		if ($mimeType=='application/octet-stream') {
+			if(count(self::$mimetypes)>0){
+				self::$mimetypes = include('mimetypes.fixlist.php');
+			}
+			$extention=strtolower(strrchr(basename($path), "."));
+			$extention=substr($extention,1);//remove leading .
+			$mimeType=(isset(self::$mimetypes[$extention]))?self::$mimetypes[$extention]:'application/octet-stream';
+
+		}
+		if (@is_dir($path)) {
+			// directories are easy
+			return "httpd/unix-directory";
+		}
+		if($mimeType=='application/octet-stream' and function_exists('finfo_open') and function_exists('finfo_file') and $finfo=finfo_open(FILEINFO_MIME)){
+			$info = @strtolower(finfo_file($finfo,$path));
+			if($info){
+				$mimeType=substr($info,0,strpos($info,';'));
+			}
+			finfo_close($finfo);
+		}
+		if (!$isWrapped and $mimeType=='application/octet-stream' && function_exists("mime_content_type")) {
+			// use mime magic extension if available
+			$mimeType = mime_content_type($path);
+		}
+		if (!$isWrapped and $mimeType=='application/octet-stream' && OC_Helper::canExecute("file")) {
+			// it looks like we have a 'file' command,
+			// lets see it it does have mime support
+			$path=str_replace("'","\'",$path);
+			$fp = popen("file -i -b '$path' 2>/dev/null", "r");
+			$reply = fgets($fp);
+			pclose($fp);
+
+			//trim the character set from the end of the response
+			$mimeType=substr($reply,0,strrpos($reply,' '));
+		}
+		if ($mimeType=='application/octet-stream') {
+			// Fallback solution: (try to guess the type by the file extension
+			if(!self::$mimetypes || self::$mimetypes != include('mimetypes.list.php')){
+				self::$mimetypes=include('mimetypes.list.php');
+			}
+			$extention=strtolower(strrchr(basename($path), "."));
+			$extention=substr($extention,1);//remove leading .
+			$mimeType=(isset(self::$mimetypes[$extention]))?self::$mimetypes[$extention]:'application/octet-stream';
+		}
+		return $mimeType;
+	}
 	
 	/**
 	 * @brief Checks $_REQUEST contains a var for the $s key. If so, returns the html-escaped value of this var; otherwise returns the default value provided by $d.
diff --git a/tests/lib/streamwrappers.php b/tests/lib/streamwrappers.php
new file mode 100644
index 0000000000..c4784a6297
--- /dev/null
+++ b/tests/lib/streamwrappers.php
@@ -0,0 +1,47 @@
+<?php
+/**
+* ownCloud
+*
+* @author Robin Appelman
+* @copyright 2012 Robin Appelman icewind@owncloud.com
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+* License as published by the Free Software Foundation; either
+* version 3 of the License, or any later version.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+*
+* You should have received a copy of the GNU Affero General Public
+* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+*
+*/
+
+class Test_StreamWrappers extends UnitTestCase {
+	public function testFakeDir(){
+		$items=array('foo','bar');
+		OC_FakeDirStream::$dirs['test']=$items;
+		$dh=opendir('fakedir://test');
+		$result=array();
+		while($file=readdir($dh)){
+			$result[]=$file;
+			$this->assertNotIdentical(false,array_search($file,$items));
+		}
+		$this->assertEqual(count($items),count($result));
+	}
+
+	public function testStaticStream(){
+		$sourceFile=OC::$SERVERROOT.'/tests/data/lorem.txt';
+		$staticFile='static://test';
+		$this->assertFalse(file_exists($staticFile));
+		file_put_contents($staticFile,file_get_contents($sourceFile));
+		$this->assertTrue(file_exists($staticFile));
+		$this->assertEqual(file_get_contents($sourceFile),file_get_contents($staticFile));
+		unlink($staticFile);
+		clearstatcache();
+		$this->assertFalse(file_exists($staticFile));
+	}
+}
\ No newline at end of file