AshMind.Web.Mvc.HtmlSecurityExtensions.IsActionAuthorized C# (CSharp) Method

        private static bool IsActionAuthorized(string actionName, ControllerBase controller)
        {
            Contract.Requires<ArgumentNullException>(controller != null);
            Contract.Requires<ArgumentException>(controller.ControllerContext != null);

            var finder = new ControllerActionFinder();
            var action = finder.FindAction(controller.ControllerContext, actionName);

            // TODO: verify! This line was replaced in order to upgrade to MVC 3
            // var filters = action.GetFilters().AuthorizationFilters;
            var filters = FilterProviders.Providers.GetFilters(controller.ControllerContext, action).OfType<IAuthorizationFilter>();

            var authorizationContext = new AuthorizationContext(controller.ControllerContext, action);
            foreach (var authorize in filters) {
                authorize.OnAuthorization(authorizationContext);
                if (authorizationContext.Result is HttpUnauthorizedResult)
                    return false;
            }

            return true;
        }