internal static RdpPacket Secure_Receive(out bool bFastPath)
{
int num;
int num2;
int num3 = 0;
RdpPacket packet = null;
Label_0004:
bFastPath = false;
packet = ReceiveMCS(out num, out num2);
if (packet == null)
{
return(null);
}
switch (num2)
{
case 0xff:
bFastPath = true;
return(packet);
case 0xfe:
packet = Secure.DecryptPacket(packet);
bFastPath = true;
return(packet);
}
if (Secure.RDPEncrypted() || Licence.IsLicensePacket(packet))
{
num3 = packet.getLittleEndian32();
if ((num3 & MCS.SEC_ENCRYPT) != 0)
{
packet = Secure.DecryptPacket(packet);
}
if ((num3 & 0x80) != 0)
{
Licence.process(packet);
goto Label_0004;
}
if ((num3 & MCS.SEC_REDIRECTION_PKT) != 0)
{
ControlFlow.processRedirection(packet, true);
goto Label_0004;
}
}
if (num != MCS.MSC_GLOBAL_CHANNEL)
{
Channels.channel_process(num, packet);
goto Label_0004;
}
return(packet);
}
internal static void internal_sendInput(int time, int message_type, int device_flags, uint param1, uint param2)
{
if (Network.ConnectionAlive || (message_type == 0))
{
RdpPacket packet = new RdpPacket();
packet.WriteLittleEndian16((short)1);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian32(time);
packet.WriteLittleEndian16((short)message_type);
packet.WriteLittleEndian16((short)device_flags);
packet.WriteLittleEndian16((ushort)param1);
packet.WriteLittleEndian16((ushort)param2);
sendDataPDU(packet, PDUType2.PDUTYPE2_INPUT, Secure.RDPEncrypted() ? MCS.SEC_ENCRYPT : 0);
}
}
private static void processMcsData(RdpPacket mcs_data)
{
int num = 0;
int num2 = 0;
int num3 = 0;
mcs_data.Position += 0x15L;
if ((mcs_data.ReadByte() & 0x80) != 0)
{
mcs_data.ReadByte();
}
while (mcs_data.Position < mcs_data.Length)
{
num = mcs_data.getLittleEndian16();
num2 = mcs_data.getLittleEndian16();
if (num2 <= 4)
{
return;
}
num3 = (int)((mcs_data.Position + num2) - 4L);
switch (((SRV)num))
{
case SRV.SEC_TAG_SRV_INFO:
processSrvInfo(mcs_data);
break;
case SRV.SEC_TAG_SRV_CRYPT:
Secure.processCryptInfo(mcs_data);
break;
case SRV.SEC_TAG_SRV_3:
break;
case SRV.SEC_TAG_SRV_MSG_CHANNEL:
Channels.RegisteredChannels.Add(new NetworkCharacteristicsDetection(mcs_data.getLittleEndian16()));
break;
default:
throw new RDFatalException("MSC data incorrect tag " + num.ToString());
}
mcs_data.Position = num3;
}
}
private static void sendConfirmActive()
{
int num = 390;
int num2 = 0;
if (Secure.RDPEncrypted())
{
num2 |= MCS.SEC_ENCRYPT;
}
RdpPacket data = new RdpPacket();
data.WriteLittleEndian16((short)((0x10 + num) + RDP_SOURCE.Length));
data.WriteLittleEndian16((short)0x13);
data.WriteLittleEndian16((short)(RDPClient.McsUserID + 0x3e9));
data.WriteLittleEndian32(RDPClient.rdp_shareid);
data.WriteLittleEndian16((short)0x3ea);
data.WriteLittleEndian16((short)RDP_SOURCE.Length);
data.WriteLittleEndian16((short)num);
data.Write(RDP_SOURCE, 0, RDP_SOURCE.Length);
data.WriteLittleEndian16((short)13);
data.Position += 2L;
sendGeneralCaps(data);
sendBitmapCaps(data);
sendOrderCaps(data);
sendBitmapcacheCaps(data);
sendColorcacheCaps(data);
sendActivateCaps(data);
sendControlCaps(data);
sendPointerCaps(data);
sendShareCaps(data);
sendInputCaps(data);
sendSoundCaps(data);
sendFontCaps(data);
sendGlyphCacheCaps(data);
IsoLayer.SendMCS_GlobalChannel(data, num2);
}
private static void sendPersistKeyList()
{
int num = 0;
int num2 = 0;
int num3 = 0;
int num4 = 0;
int num5 = 0;
int num6 = 0;
int num7 = 0;
int num8 = 0;
int num9 = 0;
int num10 = 0;
int offset = 0;
while ((((num6 < num) || (num7 < num2)) || ((num8 < num3) || (num9 < num4))) || (num10 < num5))
{
int num12 = 0;
int num13 = 0;
int num14 = 0;
int num15 = 0;
int num16 = 0;
bool bMoreKeys = false;
RdpPacket packet = new RdpPacket();
packet.WriteLittleEndian16((ushort)num12);
packet.WriteLittleEndian16((ushort)num13);
packet.WriteLittleEndian16((ushort)num14);
packet.WriteLittleEndian16((ushort)num15);
packet.WriteLittleEndian16((ushort)num16);
packet.WriteLittleEndian16((ushort)num);
packet.WriteLittleEndian16((ushort)num2);
packet.WriteLittleEndian16((ushort)num3);
packet.WriteLittleEndian16((ushort)num4);
packet.WriteLittleEndian16((ushort)num5);
byte num17 = 0;
if (offset == 0)
{
num17 = (byte)(num17 | 1);
}
if (!bMoreKeys)
{
num17 = (byte)(num17 | 2);
}
packet.WriteByte(num17);
packet.WriteByte(0);
packet.WriteLittleEndian16((short)0);
IsoLayer.sendDataPDU(packet, IsoLayer.PDUType2.PDUTYPE2_BITMAPCACHE_PERSISTENT_LIST, Secure.RDPEncrypted() ? MCS.SEC_ENCRYPT : 0);
num6 += num12;
num7 += num13;
num8 += num14;
num9 += num15;
num10 += num16;
}
}
public static void Disconnect()
{
RdpPacket packet = new RdpPacket();
packet.WriteLittleEndian16((short)1);
packet.WriteLittleEndian16((short)0x3ea);
IsoLayer.sendDataPDU(packet, IsoLayer.PDUType2.PDUTYPE2_SHUTDOWN_REQUEST, Secure.RDPEncrypted() ? SEC_ENCRYPT : 0);
packet = new RdpPacket();
packet.WriteByte((byte)(DPUM << 2));
packet.WriteByte(3);
IsoLayer.SendTPKT(packet);
}
private static RdpPacket getLoginInfo(string domain, string username, string password, string command, string directory, bool bAutoReconnect)
{
int num = 2 * "127.0.0.1".Length;
int num2 = 2 * @"C:\WINNT\System32\mstscax.dll".Length;
int num1 = _p;
int num3 = 2 * domain.Length;
int num4 = 2 * username.Length;
int num5 = 2 * password.Length;
int num6 = 2 * command.Length;
int num7 = 2 * directory.Length;
RdpPacket packet = new RdpPacket();
int num8 = 0x213b;
packet.WriteLittleEndian32(0);
packet.WriteLittleEndian32(num8);
packet.WriteLittleEndian16((short)num3);
packet.WriteLittleEndian16((short)num4);
if ((num8 & 8) != 0)
{
packet.WriteLittleEndian16((short)num5);
}
else
{
packet.WriteLittleEndian16((short)0);
}
packet.WriteLittleEndian16((short)num6);
packet.WriteLittleEndian16((short)num7);
if (0 < num3)
{
packet.WriteUnicodeString(domain);
}
else
{
packet.WriteLittleEndian16((short)0);
}
packet.WriteUnicodeString(username);
if ((num8 & 8) != 0)
{
packet.WriteUnicodeString(password);
}
else
{
packet.WriteLittleEndian16((short)0);
}
if (0 < num6)
{
packet.WriteUnicodeString(command);
}
else
{
packet.WriteLittleEndian16((short)0);
}
if (0 < num7)
{
packet.WriteUnicodeString(directory);
}
else
{
packet.WriteLittleEndian16((short)0);
}
packet.WriteLittleEndian16((short)2);
packet.WriteLittleEndian16((short)(num + 2));
packet.WriteUnicodeString("127.0.0.1");
packet.WriteLittleEndian16((short)(num2 + 2));
packet.WriteUnicodeString(@"C:\WINNT\System32\mstscax.dll");
TimeZoneInfo info = TimeZoneInfo.Local;
packet.WriteLittleEndian32((int)info.BaseUtcOffset.TotalMinutes);
packet.WriteUnicodeString(info.StandardName);
packet.Position += 0x3e - (2 * info.StandardName.Length);
if (info.SupportsDaylightSavingTime)
{
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((ushort)10);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)30);
packet.WriteLittleEndian16((short)2);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian32(0);
}
else
{
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian32(0);
}
packet.WriteUnicodeString(info.DaylightName);
packet.Position += 0x3e - (2 * info.DaylightName.Length);
if (info.SupportsDaylightSavingTime)
{
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((ushort)3);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0x1b);
packet.WriteLittleEndian16((short)1);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian32((int)(info.BaseUtcOffset.TotalMinutes + 1.0));
}
else
{
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian16((short)0);
packet.WriteLittleEndian32(0);
}
packet.WriteLittleEndianU32(0);
PerformanceFlags flags = (PerformanceFlags)0;
if (!RDPClient.IsHostFlagSet(HostFlags.DesktopBackground))
{
flags |= PerformanceFlags.PERF_DISABLE_WALLPAPER;
}
if (RDPClient.IsHostFlagSet(HostFlags.FontSmoothing))
{
flags |= PerformanceFlags.PERF_ENABLE_FONT_SMOOTHING;
}
if (RDPClient.IsHostFlagSet(HostFlags.DesktopComposition))
{
flags |= PerformanceFlags.PERF_ENABLE_DESKTOP_COMPOSITION;
}
if (!RDPClient.IsHostFlagSet(HostFlags.ShowWindowContents))
{
flags |= PerformanceFlags.PERF_DISABLE_FULLWINDOWDRAG;
}
if (!RDPClient.IsHostFlagSet(HostFlags.MenuAnimation))
{
flags |= PerformanceFlags.PERF_DISABLE_MENUANIMATIONS;
}
if (!RDPClient.IsHostFlagSet(HostFlags.VisualStyles))
{
flags |= PerformanceFlags.PERF_DISABLE_THEMING;
}
packet.WriteLittleEndian32((int)flags);
if (bAutoReconnect)
{
packet.WriteLittleEndian32(0x1c);
packet.WriteLittleEndian32(0x1c);
packet.WriteLittleEndian32(1);
packet.WriteLittleEndian32(RDPClient.LogonID);
HMACT64 hmact = new HMACT64(RDPClient.ReconnectCookie);
hmact.update(Secure.GetClentRandom());
byte[] buffer = hmact.digest();
packet.Write(buffer, 0, buffer.Length);
return(packet);
}
packet.WriteLittleEndian32(0);
return(packet);
}
internal static void send_connection_request(byte[] loadBalanceToken, bool bAutoReconnect)
{
int num;
RDPClient.dec_count = 0;
RDPClient.enc_count = 0;
Network.ConnectionStage = RDPClient.eConnectionStage.Negotiating;
if (RDPClient.enableNLA)
{
sendConnectNegotiation(3, loadBalanceToken);
num = receiveConnectNegotiation();
if (num == 0x10000000)
{
Network.Close();
Network.Connect(RDPClient.Host, RDPClient.Port);
sendConnectNegotiation(0, loadBalanceToken);
num = receiveConnectNegotiation();
if (num != 0)
{
throw new RDFatalException("Security negotiation failed!");
}
}
else
{
if (((num & 1) != 0) || ((num & 2) != 0))
{
Network.ConnectionStage = RDPClient.eConnectionStage.Securing;
Network.ConnectSSL();
}
if ((num & 2) != 0)
{
Network.ConnectionStage = RDPClient.eConnectionStage.Authenticating;
CredSSP.Negotiate(Network.GetSSLPublicKey());
}
}
}
else
{
sendConnectNegotiation(0, loadBalanceToken);
num = receiveConnectNegotiation();
if (num != 0)
{
throw new RDFatalException("Security negotiation failed!");
}
}
Network.ConnectionStage = RDPClient.eConnectionStage.Establishing;
IsoLayer.SendTPKT(sendConnectInitial(sendMcsData(true, Channels.RegisteredChannels.Count, num)));
receiveConnectResponse();
send_ErectDomainRequest();
send_AttachUserRequest();
RDPClient.McsUserID = receive_AttachUserConfirm();
send_ChannelJoinRequest(RDPClient.McsUserID + MCS_USERCHANNEL_BASE);
receive_ChannelJoinConfirm();
send_ChannelJoinRequest(MSC_GLOBAL_CHANNEL);
receive_ChannelJoinConfirm();
foreach (IVirtualChannel channel in Channels.RegisteredChannels)
{
send_ChannelJoinRequest(channel.ChannelID);
receive_ChannelJoinConfirm();
}
int num2 = 0x40;
if (Secure.RDPEncrypted())
{
Network.ConnectionStage = RDPClient.eConnectionStage.SecureAndLogin;
RdpPacket packet = Secure.establishKey();
packet.Position = 0L;
IsoLayer.SendMCS(packet, MSC_GLOBAL_CHANNEL);
num2 |= SEC_ENCRYPT;
}
else
{
Network.ConnectionStage = RDPClient.eConnectionStage.Login;
}
IsoLayer.SendMCS_GlobalChannel(getLoginInfo(RDPClient.Domain, RDPClient.Username, RDPClient.Password, "", "", bAutoReconnect), num2);
}
