/// <summary>
/// Client MCS Attach User Request PDU
/// </summary>
private static void send_AttachUserRequest()
{
RdpPacket data = new RdpPacket();
data.WriteByte((byte)(AURQ << 2));
IsoLayer.SendTPKT(data);
}
/// <summary>
/// Client MCS Channel Join Request PDU
/// </summary>
private static void send_ChannelJoinRequest(int channelId)
{
RdpPacket data = new RdpPacket();
data.WriteByte((byte)(CJRQ << 2));
data.WriteBigEndian16((short)McsUserID);
data.WriteBigEndian16((short)channelId);
IsoLayer.SendTPKT(data);
}
/// <summary>
/// Client MCS Erect Domain Request PDU
/// </summary>
private static void send_ErectDomainRequest()
{
RdpPacket data = new RdpPacket();
data.WriteByte((byte)(EDRQ << 2));
data.WriteBigEndian16((short)1);
data.WriteBigEndian16((short)1);
IsoLayer.SendTPKT(data);
}
/// <summary>
/// Disconnect packet
/// </summary>
public static void Disconnect()
{
RdpPacket packet = new RdpPacket();
packet.WriteLittleEndian16((short)1);
packet.WriteLittleEndian16((short)0x3ea);
IsoLayer.SendPDU(packet, IsoLayer.PDUType2.PDUTYPE2_SHUTDOWN_REQUEST, Secure.RDPEncrypted() ? (int)(MCS.TS_SECURITY_HEADER.SEC_ENCRYPT) : 0);
packet = new RdpPacket();
packet.WriteByte((byte)(DPUM << 2));
packet.WriteByte(3);
IsoLayer.SendTPKT(packet);
}
/// <summary>
/// Negotiation Start
/// </summary>
/// <param name="loadBalanceToken">null</param>
/// <param name="bAutoReconnect">false</param>
internal static void sendСonnectionRequest(byte[] loadBalanceToken, bool bAutoReconnect)
{
int num;
Secure.dec_count = 0;
Secure.enc_count = 0;
Network.ConnectionStage = Network.eConnectionStage.Negotiating;
if (Options.enableNLA)
{
// Client X.224 Connection Request PDU
sendConnectNegotiation(
NegotiationProtocol.PROTOCOL_RDP |
NegotiationProtocol.PROTOCOL_SSL |
NegotiationProtocol.PROTOCOL_HYBRID,
loadBalanceToken);
// Server X.224 Connection Confirm PDU
num = receiveConnectNegotiation();
if (num == Main.SecureValue3) // SSL подключение запрещено настройками сервера
{
Network.Close();
Network.Connect(Options.Host, Options.Port);
// Client X.224 Connection Request PDU
sendConnectNegotiation(NegotiationProtocol.PROTOCOL_RDP, loadBalanceToken);
// Server X.224 Connection Confirm PDU
num = receiveConnectNegotiation();
if (num != 0)
{
throw new RDFatalException("Security negotiation failed!");
}
}
else // SSL подключение разрешено
{
if (((num & 1) != 0) || ((num & 2) != 0))
{
Network.ConnectionStage = Network.eConnectionStage.Securing;
Network.ConnectSSL();
}
if ((num & 2) != 0)
{
Network.ConnectionStage = Network.eConnectionStage.Authenticating;
CredSSP.Negotiate(Network.GetSSLPublicKey());
}
}
}
else
{
// Client X.224 Connection Request PDU
sendConnectNegotiation(NegotiationProtocol.PROTOCOL_RDP, loadBalanceToken);
// Server X.224 Connection Confirm PDU
num = receiveConnectNegotiation();
if (num != 0)
{
throw new RDFatalException("Security negotiation failed!");
}
}
Network.ConnectionStage = Network.eConnectionStage.Establishing;
// Client MCS Connect Initial PDU
IsoLayer.SendTPKT(sendConnectInitial(sendMcsData(true, Channels.RegisteredChannels.Count, num)));
// Server MCS Connect Response PDU with GCC Conference Create Response
receiveConnectResponse();
// Client MCS Erect Domain Request PDU
send_ErectDomainRequest();
// Client MCS Attach User Request PDU
send_AttachUserRequest();
// Server MCS Attach User Confirm PDU
McsUserID = receive_AttachUserConfirm();
// Open User channel
send_ChannelJoinRequest(McsUserID + MCS_USERCHANNEL_BASE); // Client MCS Channel Join Request PDU
receive_ChannelJoinConfirm(); // Server MCS Channel Join Confirm PDU
// Open Global channel
send_ChannelJoinRequest(MSC_GLOBAL_CHANNEL);
receive_ChannelJoinConfirm();
// Open over channels
foreach (var channel in Channels.RegisteredChannels)
{
if (serverSupportedChannels.Contains(channel.ChannelID))
{
send_ChannelJoinRequest(channel.ChannelID);
receive_ChannelJoinConfirm();
Debug.WriteLine("Client open over channel: " + channel.ChannelID.ToString());
}
}
int num2 = 0x40;
if (Secure.RDPEncrypted())
{
Network.ConnectionStage = Network.eConnectionStage.SecureAndLogin;
RdpPacket packet = Secure.establishKey();
packet.Position = 0L;
IsoLayer.SendMCS(packet, MSC_GLOBAL_CHANNEL);
num2 |= 8;
}
else
{
Network.ConnectionStage = Network.eConnectionStage.Login;
}
// Client Info PDU
IsoLayer.SendToGlobalChannel(getLoginInfo(Options.Domain, Options.Username, Options.Password, "", "", bAutoReconnect), num2);
}