/// <summary> /// Retrieves the display name. /// </summary> /// <param name="user">The user.</param> /// <returns></returns> protected virtual string GetDisplayName(InMemoryUser user) { var nameClaim = user.Claims.FirstOrDefault(x => x.Type == Constants.ClaimTypes.Name); if (nameClaim != null) { return(nameClaim.Value); } return(user.Username); }
/// <summary> /// This method gets called when the user uses an external identity provider to authenticate. /// </summary> /// <param name="context">The context.</param> /// <returns></returns> public override Task AuthenticateExternalAsync(ExternalAuthenticationContext context) { var query = from u in _users where u.Provider == context.ExternalIdentity.Provider && u.ProviderId == context.ExternalIdentity.ProviderId select u; var user = query.SingleOrDefault(); if (user == null) { string displayName; var name = context.ExternalIdentity.Claims.FirstOrDefault(x => x.Type == Constants.ClaimTypes.Name); if (name == null) { displayName = context.ExternalIdentity.ProviderId; } else { displayName = name.Value; } user = new InMemoryUser { Subject = CryptoRandom.CreateUniqueId(), Provider = context.ExternalIdentity.Provider, ProviderId = context.ExternalIdentity.ProviderId, Username = displayName, Claims = context.ExternalIdentity.Claims }; _users.Add(user); } context.AuthenticateResult = new AuthenticateResult(user.Subject, GetDisplayName(user), identityProvider: context.ExternalIdentity.Provider); return(Task.FromResult(0)); }