Check blacklist before saving to filesystem

lib/base.php

@@ -365,6 +365,9 @@ class OC{
 				OC_App::loadApps();
 			}
 		}
+		
+		// Check for blacklisted files
+		OC_Hook::connect('OC_Filesystem','write','OC_Filesystem','isBlacklisted');
 
 		//make sure temporary files are cleaned up
 		register_shutdown_function(array('OC_Helper','cleanTmp'));

lib/filesystem.php

@@ -298,6 +298,19 @@ class OC_Filesystem{
 		}
 		return true;
 	}
+	
+	/**
+	 * checks if a file is blacklsited for storage in the filesystem
+	 * @param array $data from hook
+	 */
+	static public function isBlacklisted($data){
+		$blacklist = array('.htaccess');
+		$filename = strtolower(basename($data['path']));
+		if(in_array($filename,$blacklist)){
+			$data['run'] = false;	
+		}
+	}
+	
 	/**
 	 * following functions are equivilent to their php buildin equivilents for arguments/return values.
 	 */