Canvas.Helpers.Authorize.isAuthenticated C# (CSharp) Method

        public static bool isAuthenticated()
        {
            try
            {

                var validate = false;

                var cu = GetCurrentUser();

                if (cu != null)
                {
                    if (cu.UserType.Alias.ToLower() == "admin" || cu.UserType.Alias.ToLower() == "canvas")
                    {
                        validate = true;
                    }
                }

                return validate;

            }
            catch (Exception ex)
            {

                Log.Error("Canvas error on isAuthenticated in Authorize.", ex);
                return false;
            }


        }

 protected override bool AuthorizeCore(HttpContextBase httpContext)
 {
     if (Authorize.isAuthenticated())
     {
         return(true);
     }
     else
     {
         return(false);
     }
 }