public int AuthenticateConnection(ref SocksEncryption encryption)
{
List<AuthTypes> authtypes = Socks5.RequestAuth(this);
if (authtypes.Count <= 0)
{
Client.Send(new byte[] { 0x00, 0xFF });
Console.WriteLine("Client Request ERROR");
Client.Disconnect();
return 0;
}
this.Authenticated = 0;
List<object> lhandlers = PluginLoader.LoadPlugin(typeof(LoginHandler));
bool loginenabled = false;
if (lhandlers.Count > 0)
{
loginenabled = lhandlers.Cast<LoginHandler>().Any(l => l.Enabled);
}
//check out different auth types, none will have no authentication, the rest do.
if (loginenabled && (authtypes.Contains(AuthTypes.SocksBoth) || authtypes.Contains(AuthTypes.SocksEncrypt) || authtypes.Contains(AuthTypes.SocksCompress) || authtypes.Contains(AuthTypes.Login)))
{
//this is the preferred method.
encryption = Socks5.RequestSpecialMode(authtypes, Client);
foreach (LoginHandler lh in lhandlers)
{
if (lh.Enabled)
{
//request login.
User user = Socks5.RequestLogin(this);
if (user == null)
{
Client.Disconnect();
return 0;
}
LoginStatus status = lh.HandleLogin(user);
Client.Send(new byte[] { (byte)HeaderTypes.Socks5, (byte)status });
if (status == LoginStatus.Denied)
{
Console.WriteLine("> Login Denied!");
Client.Disconnect();
return 0;
}
else if (status == LoginStatus.Correct)
{
Authenticated = (encryption.GetAuthType() == AuthTypes.Login ? 1 : 2);
break;
}
}
}
}
else if (authtypes.Contains(AuthTypes.None))
{
//no authentication.
if (lhandlers.Count <= 1)
{
//unsupported methods y0
Authenticated = 1;
Client.Send(new byte[] { (byte)HeaderTypes.Socks5, (byte)HeaderTypes.Zero });
}
else
{
//unsupported.
Client.Send(new byte[] { (byte)HeaderTypes.Socks5, (byte)AuthTypes.Unsupported });
Client.Disconnect();
return 0;
}
}
else
{
//unsupported.
Client.Send(new byte[] { (byte)HeaderTypes.Socks5, (byte)AuthTypes.Unsupported });
Client.Disconnect();
return 0;
}
return Authenticated;
}
