public static Response CheckUserIsNothAuthorisedByFacebookAnymore(NancyContext context)
{
long?facebookId = null;
try
{
if (AuthenticatedUserNameHasValue(context))
{
facebookId = long.Parse(context.Items[SecurityConventions.AuthenticatedUsernameKey].ToString());
var user = InMemoryUserCache.Get(facebookId.Value);
var client = new FacebookClient(user.AccessToken);
dynamic me = client.Get("me");
}
}
catch (FacebookOAuthException)
{
//If an exception gets thrown the access token is no longer valid
RemoveUserFromCache(context, facebookId);
return(new Response()
{
StatusCode = HttpStatusCode.Unauthorized
});
}
return(context.Response);
}
private static void RemoveUserFromCache(NancyContext context, long?facebookId)
{
context.Items[SecurityConventions.AuthenticatedUsernameKey] = null;
if (facebookId.HasValue)
{
InMemoryUserCache.Remove(facebookId.Value);
}
}
public void SaveNotNullUserAndGetIt_ItIsReturned()
{
var userProfile = new UserProfile(1, "", "", "", null);
var cache = new InMemoryUserCache();
cache.SaveUser(userProfile);
var retrievedUser = cache.TryGetUser(1);
Assert.IsNotNull(retrievedUser);
}
public MainModule()
{
this.RequiresAuthentication();
Get["/"] = parameters =>
{
var facebookId = long.Parse(Context.Items[SecurityConventions.AuthenticatedUsernameKey].ToString());
var user = InMemoryUserCache.Get(facebookId);
var client = new FacebookClient(user.AccessToken);
dynamic me = client.Get("me");
return("<h1>Welcome to Social Democracy! " + me.name + "</h1><p>You have logged in using facebook</p>");
};
}
private void AddAuthenticatedUserToCache(string code, Guid userId)
{
var oAuthClient = GetFacebookOAuthClient();
dynamic tokenResult = oAuthClient.ExchangeCodeForAccessToken(code);
string accessToken = tokenResult.access_token;
var facebookClient = new FacebookClient(accessToken);
dynamic me = facebookClient.Get("me?fields=id,name");
long facebookId = Convert.ToInt64(me.id);
InMemoryUserCache.Add(new FacebookUser
{
UserId = userId,
AccessToken = accessToken,
FacebookId = facebookId,
Name = (string)me.name,
});
}
