Amss.Boilerplate.Web.MvcApplication.GetPrincipal C# (CSharp) Method

        private IPrincipal GetPrincipal()
        {
            IPrincipal principal = ApplicationPrincipal.Anonymous;
            var authCookie = HttpContext.Current.Request.Cookies[FormsAuthentication.FormsCookieName];
            if (authCookie != null)
            {
                var authTicket = FormsAuthentication.Decrypt(authCookie.Value);
                if (!authTicket.Expired)
                {
                    var login = authTicket.Name;
                    var cache = ServiceLocator.Current.GetInstance<ObjectCache>();

                    // TODO: if we going to use login as cache key we should not allow to change login?!
                    var session = cache.Get(login) as PrincipalSession;
                    if (session == null)
                    {
                        var manager = ServiceLocator.Current.GetInstance<IUserManager>();
                        var user = manager.FindByLogin(login);

                        if (user != null && user.UserPasswordCredential != null)
                        {
                            session = user.Convert();
                            cache.Add(
                                login,
                                session,
                                new CacheItemPolicy { SlidingExpiration = new TimeSpan(0, 0, 60) });
                        }
                    }

                    if (session != null)
                    {
                        principal = session.Convert();
                    }
                }
            }

            return principal;
        }