private void HandleUsrS(NotificationConnection c, Command cmd)
{
Md5AuthDetails auth = c.AuthDetails as Md5AuthDetails;
String chResponse = cmd.Params[2];
if (auth == null)
{
// ordinarily that would be an Exception condition
Command response = new Command(Error.AuthenticationFailed, cmd.TrId);
Server.Send(c, response);
}
else
{
User user;
if (AuthenticationService.AuthenticateMd5(auth.UserHandle, auth.Challenge, chResponse, out user) == AuthenticationResult.Success)
{
Command responseOk = new Command(Verb.Usr, cmd.TrId, "OK", user.UserHandle, user.FriendlyName);
Server.Send(c, responseOk);
///////////////////////////////////////
// The client will now send SYN
// create a session, which is implicit; just bind the user to the connection
user.Status = Status.Hdn; // no-longer NLN
user.NotificationServer = Server;
c.User = user;
}
else
{
Command responseFail = new Command(Error.AuthenticationFailed, cmd.TrId);
Server.Send(c, responseFail);
}
}
}
private void HandleUsrS(DispatchConnection c, Command cmd)
{
Md5AuthDetails auth = c.AuthDetails as Md5AuthDetails;
String chResponse = cmd.Params[2];
if (auth == null)
{
// ordinarily that would be an Exception condition
Command response = new Command(Error.AuthenticationFailed, cmd.TrId);
Server.Send(c, response);
}
else
{
User user;
if (AuthenticationService.AuthenticateMd5(auth.UserHandle, auth.Challenge, chResponse, out user) == AuthenticationResult.Success)
{
Command responseOk = new Command(Verb.Usr, cmd.TrId, "OK", user.UserHandle, user.FriendlyName);
Server.Send(c, responseOk);
/////////////////////////////
// Send XFR, otherwise client will use this Dispatch server as a notification server (it starts by sending SYN)
// note that the official client deviates from the IETF draft by requiring an additional "0" parameter on the XFR command
// curiously, it seems MSN Messenger 1.x caches the last Notification server and reconnects to it directly
// in which case you don't send an XFR and instead begin the rest of an NS server's duties
String sendTo = NotificationServer.Instance.GetEndPointForClient(c.Socket.LocalEndPoint).ToString();
Command responseXfr = new Command(Verb.Xfr, cmd.TrId, "NS", sendTo, "0");
Server.Send(c, responseXfr);
}
else
{
Command response = new Command(Error.AuthenticationFailed, cmd.TrId);
Server.Send(c, response);
}
}
}