I am upgrading a site to use MVC and I am looking for the best way to set up Authentication.
At this point, I have the log-in working off of Active Directory: validating a username and password, and then setting the Auth cookie.
How do I store the user's role information at time of log-in, in order for my controllers to see those roles as the user navigates through the site?
[Authorize(Roles = "admin")]
I have no problem getting a list of roles from Active Directory. I just don't know where to put them so that the controllers will see them.
Roles are added to the IPrincipal of the HttpContext. You can create a GenericPrincipal, parse the list of roles in the constructor and set it as HttpContext.User. The GenericPrincipal will then be accessible through User.IsInRole("role")
or the [Authorize(Roles="role")]
attribute
One way of doing this (in C#) is to add your roles as a comma separated string in the user data parameter when creating your authentication ticket
string roles = "Admin,Member";
FormsAuthenticationTicket authTicket = new FormsAuthenticationTicket(
1,
userId, //user id
DateTime.Now,
DateTime.Now.AddMinutes(20), // expiry
false, //do not remember
roles,
"/");
HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName,
FormsAuthentication.Encrypt(authTicket));
Response.Cookies.Add(cookie);
Then access the role list from the authentication ticket and create a GenericPrincipal from your Global.asax.cs
protected void Application_AuthenticateRequest(Object sender, EventArgs e) {
HttpCookie authCookie =
Context.Request.Cookies[FormsAuthentication.FormsCookieName];
if (authCookie != null) {
FormsAuthenticationTicket authTicket =
FormsAuthentication.Decrypt(authCookie.Value);
string[] roles = authTicket.UserData.Split(new Char[] { ',' });
GenericPrincipal userPrincipal =
new GenericPrincipal(new GenericIdentity(authTicket.Name),roles);
Context.User = userPrincipal;
}
}