asp.net MVC 3 applying AuthorizeAttribute to areas

Question

I'm currently writing an Admin MVC 3 site, and each user only has access to certain parts of the site.

The areas of my site are the same as the user Roles, so what I would like to do is the put the AuthorizeAttribute on each area, using the area's name as the parameter in the Role.

So far I've got this to work when I'm hard coding the checking of each area, but I would like to just loop through all areas and apply the Authorize filter. (i'm using this as my custom FilterProvider - http://www.dotnetcurry.com/ShowArticle.aspx?ID=578)

My code so far ("Gcm" is one of my areas, and is also a Role) :

public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
    filters.Add(new HandleErrorAttribute());
    // for all controllers, run AdminAuthorizeAttribute to make sure they're at least logged in
    filters.Add(ObjectFactory.GetInstance<AdminAuthorizeAttribute>());

    AdminAuthorizeAttribute gcmAuthroizeAttribute = ObjectFactory.GetInstance<AdminAuthorizeAttribute>();
    gcmAuthroizeAttribute.Roles = "Gcm";

    var provider = new FilterProvider();
    provider.Add(
        x =>
        x.RouteData.DataTokens["area"] != null && x.RouteData.DataTokens["area"].ToString() == "Gcm"
            ? gcmAuthroizeAttribute
            : null);
    FilterProviders.Providers.Add(provider);
}

Does anyone know how to get all the areas of my application, so I can just loop through them, rather than hard coding each area?

Or if anyone has a better idea of how to Authorize per area, that would be appreciated to.

Thanks for your help Saan

Answer 1

When I was investigating a separate issue, I came across How to pass parameters to a custom ActionFilter in ASP.NET MVC 2?

That attribute example can be altered to check for the current Controller's area.

public class CustomAuthorizeAttribute : AuthorizeAttribute
{
    public override void OnAuthorization(AuthorizationContext filterContext)
    {
        RouteData routeData = filterContext.RouteData;

        // check if user is allowed on this page
        if (SessionFactory.GetSession().Contains(SessionKey.User))
        {
            User user = (User)SessionFactory.GetSession().Get(SessionKey.User);
            string thisArea = routeData.DataTokens["area"].ToString();

            // if the user doesn't have access to this area
            if (!user.IsInRole(thisArea))
            {
                HandleUnauthorizedRequest(filterContext);
            }
        }

        // do normal OnAuthorization checks too
        base.OnAuthorization(filterContext);
    }
}

I then apply my custom authorize attribute to all controllers like this in Global.asax:

public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
    filters.Add(new HandleErrorAttribute());
    // for all controllers, run CustomAuthorizeAttribute to make sure they're at logged in and have access to area
    filters.Add(ObjectFactory.GetInstance<CustomAuthorizeAttribute>());
}

Thanks for all who replied

Saan