Add permissions for downloading LeafInput

WebCms/Utility/Permissions.cs

@@ -0,0 +1,20 @@
+using System;
+using LeafWeb.Core.Entities;
+using Umbraco.Web.Security;
+
+namespace LeafWeb.WebCms.Utility
+{
+    public static class Permissions
+    {
+        public static bool IsCurrentUserAdministrator()
+        {
+            var memberShipHelper = new MembershipHelper(Umbraco.Web.UmbracoContext.Current);
+            return memberShipHelper.IsMemberAuthorized(allowGroups: new[] {"Administrator"});
+        }
+
+        public static bool DoesBelongToUser(this LeafInput leafInput, string username)
+        {
+            return string.Equals(leafInput.Email, username, StringComparison.OrdinalIgnoreCase);
+        }
+    }
+}