Openid login database schema

I’ve been working on a photo uploading website off and on for the past month or so - just a few hours a week (if that) and I was working on the Login portion and decided now would be a good time to get into OpenId. However, it’s not the most user friendly method of logging in. I wanted a way to use OpenId or a local login. In case people don’t want to use OpenId or just simply don’t know what it is. I plan on looking into Facebook Connect or Twitter auth, as well, and may post that how to integrate it in a future article.

To support OpenId and a local login I had to modify my table structure slightly. This will allow us to use only OpenId or local login should I decide to use one over the other. To accomplish this I moved the authentication portion of my User into a separate table.

public class User {
    public int UserID { get; set; }
    public string Name { get; set; }
    public string Page { get; set; }

    public virtual Authentication Authentication { get; set; }
}

public class Authentication {
    public int Id { get; set; }
    public string LoginId { get; set; }
    public string OpenIdProvider { get; set; }
    public string Password { get; set; }

    public virtual User User { get; set; }
}


//login methods
User StandardUserLogin(string id) {
    IDataContext db = new DataContext();
    var user = db.Users.SingleOrDefault(u => u.Authentication.LoginId == username);
    if (user != null) {
        if (user.Authentication.Password == password) {
            SetAuthenticationTicket(user);
            return user;
        }
    }
}

User OpenIdUserLogin(string id) {
    IDataContext db = new DataContext();
    var user = db.Users.SingleOrDefault(u => u.Authentication.LoginId == username);
    if (user == null) {
        //create new openid user
    }

    if (user.Authentication.LoginId == id) {
        SetAuthenticationTicket(user);
        return user;
    }
}

I actually do two different logins based on whether or not it’s an OpenId user. If it’s an OpenId User I automagically create a new user save it and return the new user (unless it has an existing login associated with it already)

- Ben

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