asp.net-mvc – 如何创建特定于区域,控制器和操作的自定义Author

[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method)]
public class AuthorizeActionAttribute : AuthorizeAttribute
{
    public override void OnAuthorization(AuthorizationContext filterContext)
    {
        // get the area,controller and action
        var area = filterContext.RouteData.Values["area"];
        var controller = filterContext.RouteData.Values["controller"];
        var action = filterContext.RouteData.Values["action"];
        string verb = filterContext.HttpContext.Request.HttpMethod;

        // these values combined are our roleName
        string roleName = String.Format("{0}/{1}/{2}/{3}",area,controller,action,verb);

        // set role name to area/controller/action name
        this.Roles = roleName;

        base.OnAuthorization(filterContext);
    }
}

UPDATE
在我们拥有极其精细的角色权限的情况下,我试图避免以下情况,因为角色是基于每个客户端设置的并附加到用户组：

public partial class HomeController : Controller
{
    [Authorize(Roles = "/supplierarea/homecontroller/indexaction/")]
    public virtual ActionResult Index()
    {
        return View();
    }

    [Authorize(Roles = "/supplierarea/homecontroller/aboutaction/")]
    public virtual ActionResult About()
    {
        return View();
    }
}

任何人都可以通过安全的方式来启发我编写此AuthorizeRouteAttribute以访问路由信息并将其用作角色名称吗？正如Levi所说,RouteData.Values并不安全.

是否使用执行httpContext.Request.Path更安全或更好的做法？

public override void OnAuthorization(AuthorizationContext filterContext)
{
    if (filterContext == null)
    {
        throw new ArgumentNullException("filterContext");
    }

    if (!filterContext.HttpContext.User.Identity.IsAuthenticated)
    {
        // auth failed,redirect to login page
        filterContext.Result = new HttpUnauthorizedResult();
        return;
    }

    var path = filterContext.HttpContext.Request.Path;
    var verb = filterContext.HttpContext.Request.HttpMethod;

    // these values combined are our roleName
    string roleName = String.Format("{0}/{1}",path,verb);

    if (!filterContext.HttpContext.User.IsInRole(roleName))
    {
        // role auth failed,redirect to login page
        filterContext.Result = new HttpUnauthorizedResult();
        // P.S. I want to tell the logged in user they don't 
        // have access,not ask them to login. They are already
        // logged in!
        return;
    }

    //
    base.OnAuthorization(filterContext);
}

这可能会进一步说明问题：

enum Version
{
    PathBasedRole,InsecureButWorks,SecureButMissingAreaName
}

string GetRoleName(AuthorizationContext filterContext,Version version)
{
    //
    var path = filterContext.HttpContext.Request.Path;
    var verb = filterContext.HttpContext.Request.HttpMethod;

    // recommended way to access controller and action names
    var controller = 
        filterContext.ActionDescriptor.ControllerDescriptor.ControllerName;
    var action = 
        filterContext.ActionDescriptor.ActionName;
    var area = "oh dear...."; // mmmm,where's thearea name???

    //
    var insecureArea = filterContext.RouteData.Values["area"];
    var insecureController = filterContext.RouteData.Values["controller"];
    var insecureAction = filterContext.RouteData.Values["action"];

    string pathRoleName = 
        String.Format("{0}/{1}",verb);
    string insecureRoleName = 
        String.Format("{0}/{1}/{2}/{3}",insecureArea,insecureController,insecureAction,verb);
    string secureRoleName = 
        String.Format("{0}/{1}/{2}/{3}",verb);

    string roleName = String.Empty;

    switch (version)
    {
        case Version.InsecureButWorks:
            roleName = insecureRoleName;
            break;
        case Version.PathBasedRole:
            roleName = pathRoleName; 
            break;
        case Version.SecureButMissingAreaName:
            // let's hope they don't choose this,because
            // I have no idea what the area name is
            roleName = secureRoleName;
            break;
        default:
            roleName = String.Empty;
            break;
    }

    return roleName;
}