/// <summary>
/// Client MCS Connect Initial PDU
/// Part 1
///
/// BER Encode packet and send
/// </summary>
internal static RdpPacket sendConnectInitial(RdpPacket data)
{
int length = (int)data.Length;
int num2 = ((((9 + BER.domainParamSize(0x22, 2, 0, 0xffff))
+ BER.domainParamSize(1, 1, 1, 0x420))
+ BER.domainParamSize(0xffff, 0xfc17, 0xffff, 0xffff)) + 4) + length;
RdpPacket packet = new RdpPacket();
BER.sendBerHeader(packet, BER.BER_Header.CONNECT_INITIAL, num2);
BER.sendBerHeader(packet, BER.BER_Header.BER_TAG_OCTET_STRING, 1);
packet.WriteByte(1);
BER.sendBerHeader(packet, BER.BER_Header.BER_TAG_OCTET_STRING, 1);
packet.WriteByte(1);
BER.sendBerHeader(packet, BER.BER_Header.BER_TAG_BOOLEAN, 1);
packet.WriteByte(0xff);
sendDomainParams(packet, 0x22, 2, 0, 0xffff);
sendDomainParams(packet, 1, 1, 1, 0x420);
sendDomainParams(packet, 0xffff, 0xffff, 0xffff, 0xffff);
BER.sendBerHeader(packet, BER.BER_Header.BER_TAG_OCTET_STRING, length);
packet.copyToByteArray(data);
return(packet);
}
private void send(RdpPacket data)
{
data.Position = 0L;
int length = (int)data.Length;
int count = Math.Min(length, 1600);
int num = length - count;
if (num == 0)
{
RdpPacket packet = new RdpPacket();
packet.WriteLittleEndian32((int)length);
packet.WriteLittleEndian32((int)(CHANNEL_FLAG.CHANNEL_FLAG_FIRST | CHANNEL_FLAG.CHANNEL_FLAG_LAST | CHANNEL_FLAG.CHANNEL_FLAG_SHOW_PROTOCOL));
packet.copyToByteArray(data);
IsoLayer.SendToCannel(packet, Secure.RDPEncrypted() ? (int)(MCS.TS_SECURITY_HEADER.SEC_ENCRYPT) : 0, this.ChannelID);
}
else
{
RdpPacket packet2 = new RdpPacket();
packet2.WriteLittleEndian32((int)length);
packet2.WriteLittleEndian32((int)(CHANNEL_FLAG.CHANNEL_FLAG_FIRST | CHANNEL_FLAG.CHANNEL_FLAG_SHOW_PROTOCOL));
byte[] buffer = new byte[count];
data.Read(buffer, 0, count);
packet2.Write(buffer, 0, count);
IsoLayer.SendToCannel(packet2, Secure.RDPEncrypted() ? (int)(MCS.TS_SECURITY_HEADER.SEC_ENCRYPT) : 0, this.ChannelID);
}
while (num > 0)
{
count = Math.Min(num, 1600);
num -= count;
RdpPacket packet3 = new RdpPacket();
packet3.WriteLittleEndian32((int)length);
if (num == 0)
{
packet3.WriteLittleEndian32((int)(CHANNEL_FLAG.CHANNEL_FLAG_LAST | CHANNEL_FLAG.CHANNEL_FLAG_SHOW_PROTOCOL));
}
else
{
packet3.WriteLittleEndian32((int)(CHANNEL_FLAG.CHANNEL_FLAG_SHOW_PROTOCOL));
}
byte[] buffer2 = new byte[count];
data.Read(buffer2, 0, count);
packet3.Write(buffer2, 0, count);
IsoLayer.SendToCannel(packet3, Secure.RDPEncrypted() ? (int)(MCS.TS_SECURITY_HEADER.SEC_ENCRYPT) : 0, this.ChannelID);
}
}
internal static void SendMCS(RdpPacket packet, int channel)
{
int length = (int)(packet.Length | 0x8000);
RdpPacket data = new RdpPacket();
data.WriteByte((byte)(MCS.SDRQ << 2));
data.WriteBigEndian16((short)MCS.McsUserID);
data.WriteBigEndian16((short)channel);
data.WriteByte(0x70);
data.WriteBigEndian16((short)length);
data.copyToByteArray(packet);
SendTPKT(data);
}
public static void SendTPKT(RdpPacket data)
{
short num = (short)(data.Length + 7L);
data.Position = 0L;
RdpPacket packet = new RdpPacket();
packet.WriteByte(3);
packet.WriteByte(0);
packet.WriteBigEndian16(num);
packet.WriteByte(2);
packet.WriteByte((byte)Main.SecureValue8);
packet.WriteByte(0x80);
packet.copyToByteArray(data);
Write(packet);
}
private static void SendTSRequest(RdpPacket negoTokens, byte[] auth_info, byte[] pub_key_auth)
{
RdpPacket packet = new RdpPacket();
ASN1.WriteTag(packet, ASN1.SequenceTag(0), "TSRequest");
ASN1.WriteTag(packet, ASN1.ContextTag(0), "CTX_Version");
ASN1.WriteInteger(packet, 2);
ASN1.CloseTag(packet, "CTX_Version");
if (negoTokens != null)
{
ASN1.WriteTag(packet, ASN1.ContextTag(1), "CTX_NegTokens");
ASN1.WriteTag(packet, ASN1.SequenceTag(0), "NegTokens");
ASN1.WriteTag(packet, ASN1.SequenceTag(0), "NegTokens2");
ASN1.WriteTag(packet, ASN1.ContextTag(0), "CTX_OctetString");
ASN1.WriteTag(packet, ASN1.OctetStringTag(), "OctetString");
packet.copyToByteArray(negoTokens);
ASN1.CloseTag(packet, "OctetString");
ASN1.CloseTag(packet, "CTX_OctetString");
ASN1.CloseTag(packet, "NegTokens2");
ASN1.CloseTag(packet, "NegTokens");
ASN1.CloseTag(packet, "CTX_NegTokens");
}
if (auth_info != null)
{
ASN1.WriteTag(packet, ASN1.ContextTag(2), "CTX_AuthInfo");
ASN1.WriteTag(packet, ASN1.OctetStringTag(), "OctetString");
packet.Write(auth_info, 0, auth_info.Length);
ASN1.CloseTag(packet, "OctetString");
ASN1.CloseTag(packet, "CTX_AuthInfo");
}
if (pub_key_auth != null)
{
ASN1.WriteTag(packet, ASN1.ContextTag(3), "CTX_PubKeyAuth");
ASN1.WriteTag(packet, ASN1.OctetStringTag(), "OctetString");
packet.Write(pub_key_auth, 0, pub_key_auth.Length);
ASN1.CloseTag(packet, "OctetString");
ASN1.CloseTag(packet, "CTX_PubKeyAuth");
}
ASN1.CloseTag(packet, "TSRequest");
Send(packet);
}
internal static void SendPDU(RdpPacket packet, PDUType2 type, int sec_flags)
{
RdpPacket packet2 = new RdpPacket();
packet.Position = 0L;
int num = ((int)packet.Length) + 0x12;
packet2.WriteLittleEndian16((short)num);
packet2.WriteLittleEndian16((short)Main.SecureValue7);
packet2.WriteLittleEndian16((short)(MCS.McsUserID + 0x3e9));
packet2.WriteLittleEndian32(ControlFlow.rdp_shareid);
packet2.WriteByte(0);
packet2.WriteByte(1);
packet2.WriteLittleEndian16((short)(num - 14));
packet2.WriteByte((byte)type);
packet2.WriteByte(0);
packet2.WriteLittleEndian16((short)0);
packet2.copyToByteArray(packet);
SendToGlobalChannel(packet2, sec_flags);
}