How to get custom data out of generic principal inside an aspx code behind?

Question

I am building an application and integrating it with active directory.

So I authenticate my app user to active directory users, after that I store some of user's data like : user group and user profile to Generic principal and user identity to Generic identity.

My problem is I can't get user profile data from generic principal when I want to use it.

Can someone show me how to do that?

 string cookieName = FormsAuthentication.FormsCookieName;
 HttpCookie authCookie = Context.Request.Cookies[cookieName];

 if (authCookie == null)
 {
       //There is no authentication cookie.
       return;
 }

 FormsAuthenticationTicket authTicket = null;

 try
 {
       authTicket = FormsAuthentication.Decrypt(authCookie.Value);
 }
 catch (Exception ex)
 {
      //Write the exception to the Event Log.
       return;
 }

 if (authTicket == null)
 {
      //Cookie failed to decrypt.
      return;
 }

 String data = authTicket.UserData.Substring(0, authTicket.UserData.Length -1);
 string[] userProfileData =   data.Split(new char[] { '|' });
 //Create an Identity.
 GenericIdentity id = 
                  new GenericIdentity(authTicket.Name, "LdapAuthentication");
 //This principal flows throughout the request.
 GenericPrincipal principal = new GenericPrincipal(id, userProfileData);
 Context.User = principal;

Note : Code above is in global asax file, and I want to use user profile data which I stored in generic principal in another file named default.aspx.

Answer 1

So first off you shouldn't be doing this:

GenericPrincipal principal = new GenericPrincipal(id, userProfileData);
                                                     //^^ this is wrong!!

The second argument to the constructor is for Roles. See the docs.

---

If you want to store data into the generic principal then what you should do is

1. Create a class out of GenericIdentity :

   class MyCustomIdentity : GenericIdentity
   {
     public string[] UserData { get; set;}
     public MyCustomIdentity(string a, string b) : base(a,b)
     {
     }
   }
   

2. Create it like this:

   MyCustomIdentity = 
              new MyCustomIdentity(authTicket.Name,"LdapAuthentication");
                                                     //fill the roles correctly.
   GenericPrincipal principal = new GenericPrincipal(id, new string[] {});
   

3. Get it in the page like this:

   The Page class has a User property.

   So for example in Page load you could do this:

    protected void Page_Load(object sender, EventArgs e) {
     MyCustomIdentity id =  (MyCustomIdentity)this.User.Identity
     var iWantUserData = id.UserData;
    }
   

Answer 2

You can also use the following code:

FormsIdentity id = (FormsIdentity)HttpContext.Current.User.Identity;
string userData = id.Ticket.UserData