ASP.Net MVC 4 Generic Principal Difficulties - asp.net-mvc

Question

I am developing an ASP.Net MVC 4 web application. Previously my MVC applications have been developed using MVC 3 and with this new MVC 4 application I have just copied/ reused my authentication and authorisation code from previous applications.
When a user logs into my site I do the following
Account Controller
public ActionResult Login(LoginModel model, string returnUrl)
{
if (ModelState.IsValid)
{
User user = _userService.GetUser(model.Email.Trim());
//Create Pipe Delimited string to store UserID and Role(s)
var userData = user.ApplicantID.ToString();
foreach (var role in user.UserRoles)
{
userData = userData + "|" + role.description;
}
_formAuthService.SignIn(user.ApplicantFName, false, userData);
return RedirectToAction("Index", "Portfolio");
}
return View(model);
}
FormsAuthenticationService
public class FormsAuthenticationService : IFormsAuthenticationService
{
public void SignIn(string userName, bool createPersistentCookie, string UserData)
{
if (String.IsNullOrEmpty(userName)) throw new ArgumentException("Value cannot be null or empty.", "userName");
// Create and tuck away the cookie
FormsAuthenticationTicket authTicket = new FormsAuthenticationTicket(1, userName, DateTime.Now, DateTime.Now.AddDays(15), createPersistentCookie, UserData);
// Encrypt the ticket.
string encTicket = FormsAuthentication.Encrypt(authTicket);
//// Create the cookie.
HttpCookie faCookie = new HttpCookie(FormsAuthentication.FormsCookieName, encTicket);
HttpContext.Current.Response.Cookies.Add(faCookie);
}
}
Global.asax
protected void Application_AuthenticateRequest(Object sender, EventArgs e)
{
// Get the authentication cookie
string cookieName = FormsAuthentication.FormsCookieName;
HttpCookie authCookie = Context.Request.Cookies[cookieName];
// If the cookie can't be found, don't issue the ticket
if (authCookie == null) return;
// Get the authentication ticket and rebuild the principal
// & identity
FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);
string[] UserData = authTicket.UserData.Split(new Char[] { '|' });
GenericIdentity userIdentity = new GenericIdentity(authTicket.Name);
GenericPrincipal userPrincipal = new GenericPrincipal(userIdentity, UserData);
Context.User = userPrincipal;
}
This code works well in my previous MVC 3 applications, but in this MVC 4 application, inside the Razor View, the following code does not seem to be accessing the IsInRole property to perform the role check
#if (HttpContext.Current.User.IsInRole("Applicant"))
{
<p>text</text>
}
Again, this worked perfectly in my MVC 3 applications.
Does anyone have any ideas or suggestions as to why this won't work with my MVC 4 application?
Any help is much appreciated.
Thanks.
Extra Info
My MVC 4 application is using .Net Framework 4.0
The screenshot below shows my Generic Principal which is assigned to Context.User. You can see that for this User, the m_roles contains two strings, the UserID (100170) and their Role(Applicant). But for some reason, The IsInRoles cannot be accessed or seen in my MVC 4 Razor View, however, it could in my identical MVC 3 Razor View.

Answer 1

Folks
I finally resolved this issue. It appears by default the SimpleMembershipProvider is enabled when you create a new ASP.NET MVC 4 application. I did not want to use the SimpleMembershipProvider on this occasion, however, I needed to disable it in my web config with the following line
<appSettings>
<add key="enableSimpleMembership" value="false" />
</appSettings>
My call to User.IsInRole works great now.
Hope this helps someone else.

Answer 2

In MVC 4 you can access the User from the WebPageRenderingBase, so inside razor syntax you have direct access to the User instance:
#if (Request.IsAuthenticated && User.IsInRole("Applicant"))
{
<p>text</p>
}
I see that you are creating a FormsAuthenticationTicket and an HttpCookie manually. The FormsAuthentication class would do this for you using SetAuthCookie(string, bool[, string]). In this sense your auth service can be reduced to:
public class FormsAuthenticationService : IFormsAuthenticationService
{
public void SignIn(string userName, bool createPersistentCookie, string UserData)
{
if (String.IsNullOrEmpty(userName)) throw new ArgumentException("Value cannot be null or empty.", "userName");
FormsAuthentication.SetAuthCookie(userName, createPersistentCookie);
}
}
It turns out you also need to change Application_AuthenticateRequest to Application_OnPostAuthenticateRequest:
protected void Application_OnPostAuthenticateRequest(Object sender, EventArgs e)

Answer 3

In MVC 4 HttpContext.Current.User is not exposed so you can't use it. What i did was create a custom BaseViewPage and added following code in it.
public abstract class BaseViewPage : WebViewPage
{
public virtual new Principal User
{
get { return base.User as Principal; }
}
}
public abstract class BaseViewPage<TModel> : WebViewPage<TModel>
{
public virtual new Principal User
{
get { return base.User as Principal; }
}
}
And then make following changes to system.web.webPages.razor/pages section your web.config in Views folder.
<system.web.webPages.razor>
<host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<pages pageBaseType="WebApp.Views.BaseViewPage">
<namespaces>
...
</namespaces>
</pages>
Hope this solves your problem.