Azure ACS Authorize attribute MVC4Beta + WebAPI Beta

authenticateandauthorizeacsattributes.cs

    public class AuthenticateAndAuthorizeAcsMvcAttribute : System.Web.Mvc.AuthorizeAttribute
    {
        public override void OnAuthorization(System.Web.Mvc.AuthorizationContext filterContext)
        {
            var principal = filterContext.HttpContext.User;
            if (principal == null || !principal.Identity.IsAuthenticated)
            {
                filterContext.Result = new ViewResult()
                {
                    ViewName = "AcsLogin",
                    ViewData = filterContext.Controller.ViewData,
                    TempData = filterContext.Controller.TempData
                };
                return;

            }
            base.OnAuthorization(filterContext);
        }

    }

    public class AuthenticateAndAuthorizeAcsApiAttribute : System.Web.Http.AuthorizeAttribute
    {
        public override void OnAuthorization(System.Web.Http.Controllers.HttpActionContext actionContext)
        {
            var principal = actionContext.Request.GetUserPrincipal();
            if (principal == null || !principal.Identity.IsAuthenticated)
            {
                actionContext.Response = new HttpResponseMessage(HttpStatusCode.Unauthorized);
                return;
            }
            actionContext.Response = new HttpResponseMessage(HttpStatusCode.OK);
        }
 
    }

For background, go to http://www.liquidelectron.com/gotcha-again-workarounds-for-asp.net-mvc-4-beta-issues

Updated the Gist to derive the API filter from System.Web.Http.AuthorizeAttribute instead of implementing IAuthorizationFilter. Let the base class do all the work for me!