public void LogOutUser(AuthorizationContext filterContext)
 {
   IFormsAuthenticationService formsService = new FormsAuthenticationService();
   formsService.SignOut();
   AddNoOutputCacheHeaders(filterContext);
   filterContext.Result = new HttpUnauthorizedResult();
 }
        public override void OnAuthorization(AuthorizationContext filterContext)
        {
            if (filterContext == null)
            throw new ArgumentNullException("filterContext");

              if (AuthorizeCore(filterContext.HttpContext))
              {
            VauctionPrincipal principal = (filterContext.HttpContext.User as VauctionPrincipal);
            if (principal == null) { LogOutUser(filterContext); return; }
            VauctionIdentity identity = principal.UIdentity;

            var user = filterContext.HttpContext.Session[SessionKeys.User] as SessionUser;
            if (user == null || (string.Compare(user.IP, filterContext.HttpContext.Request.UserHostAddress, true) != 0 && user.IsBuyer )) { LogOutUser(filterContext); return; }

            bool isNeedToCheckStatus = principal.IsNeedToCheckStatus(statusCheckTime);
            if (isNeedToCheckStatus)
            {
              User usr = ProjectConfig.Config.DataProvider.GetInstance().UserRepository.GetUserAdministrator(identity.ID, identity.Name);
              if (usr != null && user.Status != (byte)Consts.UserStatus.Active)
              {
            IFormsAuthenticationService formsService = new FormsAuthenticationService();
            formsService.SignIn(usr.Login, identity.RememberMe, usr);
              }
              else
              {
            LogOutUser(filterContext);
            return;
              }
            }

            if (!String.IsNullOrEmpty(Roles))
            {
              string[] roles = Roles.Split(',');
              bool res = false;
              foreach (string role in roles)
            if (res = (role.Equals(((Consts.UserTypes)user.UserType).ToString(), StringComparison.InvariantCulture)))
              break;
              if (!res)
            filterContext.HttpContext.Response.Redirect("/Home/AccessDenyed");
            }
              }
              else if (!filterContext.HttpContext.User.Identity.IsAuthenticated)
              {
            NotAuthorized(filterContext);
              }
        }
 private void LogOutUser(AuthorizationContext filterContext)
 {
   IFormsAuthenticationService formsService = new FormsAuthenticationService();
   formsService.SignOut();
   NotAuthorized(filterContext);
 }