fixes #789 - Security Issue: API allows access to any folder of the PC running MediaBrowser

MediaBrowser.Controller/Net/ISessionContext.cs

@@ -0,0 +1,13 @@
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Session;
+using ServiceStack.Web;
+
+namespace MediaBrowser.Controller.Net
+{
+    public interface ISessionContext 
+    {
+        SessionInfo GetSession(IRequest requestContext);
+
+        User GetUser(IRequest requestContext);
+    }
+}