/// <summary>
/// Clear all the members except the reconnection relative members.
/// </summary>
internal void ClearForReconnect()
{
lock (contextLock)
{
x224ConnectionRequestPdu = null;
x224ConnectionConfirmPdu = null;
x224NegotiateFailurePdu = null;
mcsConnectInitialPdu = null;
mcsConnectResponsePdu = null;
userChannelId = 0;
ioChannelId = 0;
serverChannelId = 0;
clientInfo = null;
securityExchangePdu = null;
licenseErrorPdu = null;
demandActivePdu = null;
comfirmActivePdu = null;
logonInfoV1 = new TS_LOGON_INFO();
logonInfoV2 = new TS_LOGON_INFO_VERSION_2();
logonErrorsInfo = null;
encryptionCount = 0;
decryptionCount = 0;
if (encryptionAlgorithm != null)
{
encryptionAlgorithm.Dispose();
encryptionAlgorithm = null;
}
if (ioDecompressor != null)
{
ioDecompressor.Dispose();
ioDecompressor = null;
}
if (ioCompressor != null)
{
ioCompressor.Dispose();
ioCompressor = null;
}
}
}
/// <summary>
/// Update some members of context with the specified pdu.
/// </summary>
/// <param name="pdu">The sending or receiving pdu.</param>
public void UpdateContext(StackPacket pdu)
{
lock (contextLock)
{
if (!isSwitchOn)
{
// Don't update context but wait for upper layer TSD to do so.
return;
}
if (pdu.GetType() == typeof(Client_X_224_Connection_Request_Pdu))
{
x224ConnectionRequestPdu = (Client_X_224_Connection_Request_Pdu)pdu.Clone();
}
else if (pdu.GetType() == typeof(Server_X_224_Connection_Confirm_Pdu))
{
x224ConnectionConfirmPdu = ((Server_X_224_Connection_Confirm_Pdu)pdu.Clone()).rdpNegData;
}
else if (pdu.GetType() == typeof(Server_X_224_Negotiate_Failure_Pdu))
{
x224NegotiateFailurePdu = ((Server_X_224_Negotiate_Failure_Pdu)pdu.Clone()).rdpNegFailure;
}
else if (pdu.GetType() == typeof(Client_MCS_Connect_Initial_Pdu_with_GCC_Conference_Create_Request))
{
mcsConnectInitialPdu = ((Client_MCS_Connect_Initial_Pdu_with_GCC_Conference_Create_Request)
pdu.Clone()).mcsCi;
}
else if (pdu is Server_MCS_Connect_Response_Pdu_with_GCC_Conference_Create_Response)
{
mcsConnectResponsePdu = (Server_MCS_Connect_Response_Pdu_with_GCC_Conference_Create_Response)
pdu.Clone();
serverRandom = RdpbcgrUtility.CloneByteArray(mcsConnectResponsePdu.mcsCrsp.gccPdu.serverSecurityData.serverRandom);
ioChannelId = mcsConnectResponsePdu.mcsCrsp.gccPdu.serverNetworkData.MCSChannelId;
if(mcsConnectResponsePdu.mcsCrsp.gccPdu.serverMessageChannelData != null)
mcsMsgChannelId = mcsConnectResponsePdu.mcsCrsp.gccPdu.serverMessageChannelData.MCSChannelID;
encryptionAlgorithm = new EncryptionAlgorithm(RdpEncryptionMethod);
}
else if (pdu.GetType() == typeof(Server_MCS_Attach_User_Confirm_Pdu))
{
if (((Server_MCS_Attach_User_Confirm_Pdu)pdu).attachUserConfirm.initiator != null)
{
userChannelId = (ushort)((Server_MCS_Attach_User_Confirm_Pdu)pdu).attachUserConfirm.initiator.Value;
}
}
else if (pdu.GetType() == typeof(Client_Security_Exchange_Pdu))
{
securityExchangePdu = (Client_Security_Exchange_Pdu)pdu.Clone();
clientRandom = RdpbcgrUtility.CloneByteArray(
((Client_Security_Exchange_Pdu)pdu).securityExchangePduData.clientRandom);
GenerateSessionKey();
}
else if (pdu.GetType() == typeof(Client_Info_Pdu))
{
clientInfo = ((Client_Info_Pdu)pdu.Clone()).infoPacket;
if (clientInfo != null
&& (clientInfo.flags & flags_Values.INFO_COMPRESSION) == flags_Values.INFO_COMPRESSION)
{
ioDecompressor = new Decompressor(SlidingWindowSize.EightKB);
ioCompressor = new Compressor(SlidingWindowSize.EightKB);
}
isWaitingLicenseErrorPdu = true;
}
else if (pdu.GetType() == typeof(Server_Auto_Detect_Request_PDU))
{
NETWORK_DETECTION_REQUEST requestData = ((Server_Auto_Detect_Request_PDU)pdu).autoDetectReqData.Clone();
if (requestData.requestType == AUTO_DETECT_REQUEST_TYPE.RDP_RTT_REQUEST_IN_CONNECTTIME || requestData.requestType == AUTO_DETECT_REQUEST_TYPE.RDP_RTT_REQUEST_AFTER_CONNECTTIME)
{
RDP_RTT_REQUEST rttRequest = (RDP_RTT_REQUEST)requestData;
rttRequest.sendTime = DateTime.Now;
this.serverAutoDetectRequestData.Add(rttRequest.sequenceNumber, rttRequest);
}
}
else if (pdu.GetType() == typeof(Client_Auto_Detect_Response_PDU))
{
clientAutoDetectResponsePdu = (Client_Auto_Detect_Response_PDU)pdu.Clone();
NETWORK_DETECTION_RESPONSE responseData = clientAutoDetectResponsePdu.autodetectRspPduData;
if (responseData.responseType == AUTO_DETECT_RESPONSE_TYPE.RDP_RTT_RESPONSE)
{
RDP_RTT_REQUEST rttRequest = (RDP_RTT_REQUEST)serverAutoDetectRequestData[responseData.sequenceNumber];
if (rttRequest != null)
{
TimeSpan interval = DateTime.Now - rttRequest.sendTime;
this.autoDetectedRTTList.Add((uint)interval.TotalMilliseconds);
serverAutoDetectRequestData.Remove(responseData.sequenceNumber);
}
}
else if (responseData.responseType == AUTO_DETECT_RESPONSE_TYPE.RDP_BW_RESULTS_AFTER_CONNECT || responseData.responseType == AUTO_DETECT_RESPONSE_TYPE.RDP_BW_RESULTS_DURING_CONNECT)
{
RDP_BW_RESULTS bwResult = (RDP_BW_RESULTS)responseData;
if(bwResult.timeDelta != 0)
this.autoDetectedBandwidth = (uint)(bwResult.byteCount / bwResult.timeDelta);
}
else if (responseData.responseType == AUTO_DETECT_RESPONSE_TYPE.RDP_NETCHAR_SYNC)
{
RDP_NETCHAR_SYNC netSync = (RDP_NETCHAR_SYNC)responseData;
this.autoDetectedRTTList.Add(netSync.rtt);
this.autoDetectedBandwidth = netSync.bandwidth;
}
}
else if (pdu.GetType() == typeof(Server_License_Error_Pdu_Valid_Client))
{
licenseErrorPdu = (Server_License_Error_Pdu_Valid_Client)pdu.Clone();
serverChannelId = licenseErrorPdu.commonHeader.initiator;
}
else if (pdu.GetType() == typeof(Server_Initiate_Multitransport_Request_PDU))
{
Server_Initiate_Multitransport_Request_PDU requestPDU = (Server_Initiate_Multitransport_Request_PDU)pdu;
serverInitiateMultitransportRequestPduDictionary.Add(requestPDU.requestId, requestPDU);
}
else if (pdu.GetType() == typeof(Client_Initiate_Multitransport_Response_PDU))
{
clientInitiateMultitransportResponsePdu = (Client_Initiate_Multitransport_Response_PDU)pdu;
}
else if (pdu.GetType() == typeof(Server_Demand_Active_Pdu))
{
serverChannelId = ((Server_Demand_Active_Pdu)pdu.Clone()).commonHeader.initiator;
demandActivePdu = ((Server_Demand_Active_Pdu)pdu.Clone()).demandActivePduData;
}
else if (pdu.GetType() == typeof(Client_Confirm_Active_Pdu))
{
comfirmActivePdu = ((Client_Confirm_Active_Pdu)pdu.Clone()).confirmActivePduData;
if (channelManager == null)
{
channelManager = new ServerStaticVirtualChannelManager(this);
}
}
else if (pdu.GetType() == typeof(MCS_Disconnect_Provider_Ultimatum_Server_Pdu))
{
lastDisconnectReason = (int)((MCS_Disconnect_Provider_Ultimatum_Server_Pdu)
pdu).disconnectProvider.reason.Value;
}
else if (pdu.GetType() == typeof(MCS_Disconnect_Provider_Ultimatum_Pdu))
{
lastDisconnectReason = (int)((MCS_Disconnect_Provider_Ultimatum_Pdu)
pdu).disconnectProvider.reason.Value;
}
else if (pdu.GetType() == typeof(Server_Set_Error_Info_Pdu))
{
lastErrorInfo = ((Server_Set_Error_Info_Pdu)pdu).errorInfoPduData.errorInfo;
}
else if (pdu.GetType() == typeof(Server_Status_Info_Pdu))
{
lastStatusInfo = ((Server_Status_Info_Pdu)pdu).statusCode;
}
else if (pdu.GetType() == typeof(Server_Save_Session_Info_Pdu))
{
Server_Save_Session_Info_Pdu saveSessionInfoPdu = (Server_Save_Session_Info_Pdu)pdu.Clone();
switch (saveSessionInfoPdu.saveSessionInfoPduData.infoType)
{
case infoType_Values.INFOTYPE_LOGON:
logonInfoV1 = (TS_LOGON_INFO)saveSessionInfoPdu.saveSessionInfoPduData.infoData;
break;
case infoType_Values.INFOTYPE_LOGON_LONG:
logonInfoV2 = (TS_LOGON_INFO_VERSION_2)saveSessionInfoPdu.saveSessionInfoPduData.infoData;
break;
case infoType_Values.INFOTYPE_LOGON_EXTENDED_INF:
TS_LOGON_INFO_EXTENDED infoExtended =
(TS_LOGON_INFO_EXTENDED)saveSessionInfoPdu.saveSessionInfoPduData.infoData;
switch (infoExtended.FieldsPresent)
{
case FieldsPresent_Values.LOGON_EX_AUTORECONNECTCOOKIE
| FieldsPresent_Values.LOGON_EX_LOGONERRORS:
autoReconnectCookie = (ARC_SC_PRIVATE_PACKET)infoExtended.LogonFields[0].FieldData;
logonErrorsInfo = (TS_LOGON_ERRORS_INFO)infoExtended.LogonFields[1].FieldData;
break;
case FieldsPresent_Values.LOGON_EX_AUTORECONNECTCOOKIE:
autoReconnectCookie = (ARC_SC_PRIVATE_PACKET)infoExtended.LogonFields[0].FieldData;
break;
case FieldsPresent_Values.LOGON_EX_LOGONERRORS:
logonErrorsInfo = (TS_LOGON_ERRORS_INFO)infoExtended.LogonFields[0].FieldData;
break;
default:
break;
}
break;
default:
break;
}
}
}
}
/// <summary>
/// 2.2.1.10
/// </summary>
/// <param name="securityPdu"></param>
public void VerifyPdu(Client_Security_Exchange_Pdu securityPdu)
{
//<?>
CaptureRequirement(securityPdu.securityExchangePduData.length != 0, 407);
}
/// <summary>
/// Decode Security Exchange PDU
/// </summary>
/// <param name="serverSessionContext">the server session context</param>
/// <param name="data">data to be parsed</param>
/// <param name="decryptedUserData">decrypted user data</param>
/// <param name="type">the security header type</param>
/// <returns>Decoded Security Exchange PDU</returns>
public StackPacket DecodeSecurityExchangePdu(
RdpbcgrServerSessionContext serverSessionContext,
byte[] data,
byte[] decryptedUserData,
SecurityHeaderType type)
{
int currentIndex = 0;
Client_Security_Exchange_Pdu pdu = new Client_Security_Exchange_Pdu();
pdu.commonHeader = ParseMcsCommonHeader(data, ref currentIndex, type);
int userDataIndex = 0;
pdu.securityExchangePduData = ParseSecurityExchange(
serverSessionContext,
decryptedUserData,
ref userDataIndex);
// ETW Provider Dump Message
if (pdu.commonHeader.securityHeader != null)
{
// RDP Standard Security
string messageName = "RDPBCGR:" + pdu.GetType().Name;
ExtendedLogger.DumpMessage(messageName, RdpbcgrUtility.DumpLevel_Layer3, pdu.GetType().Name, decryptedUserData);
}
// Check if data length exceeded expectation
VerifyDataLength(decryptedUserData.Length, userDataIndex, ConstValue.ERROR_MESSAGE_DATA_LENGTH_EXCEEDED);
return pdu;
}
/// <summary>
/// Create an instance of the class that is identical to the current PDU.
/// </summary>
/// <returns>The new instance.</returns>
public override StackPacket Clone()
{
Client_Security_Exchange_Pdu cloneSecurityPdu = new Client_Security_Exchange_Pdu(context);
cloneSecurityPdu.commonHeader = commonHeader.Clone();
cloneSecurityPdu.securityExchangePduData = securityExchangePduData;
cloneSecurityPdu.securityExchangePduData.clientRandom =
RdpbcgrUtility.CloneByteArray(securityExchangePduData.clientRandom);
return cloneSecurityPdu;
}
/// <summary>
/// 2.2.1.10
/// </summary>
/// <param name="securityPdu"></param>
public void VerifyPdu(Client_Security_Exchange_Pdu securityPdu)
{
//<?>
CaptureRequirement(securityPdu.securityExchangePduData.length != 0, 407);
//Refer to test suite bug #8341151
//site.CaptureRequirementIfIsTrue((securityPdu.commonHeader.securityHeader.flags & TS_SECURITY_HEADER_flags_Values.SEC_EXCHANGE_PKT) == TS_SECURITY_HEADER_flags_Values.SEC_EXCHANGE_PKT, 411,
// "In Security Exchange PDU Data (TS_SECURITY_PACKET) the flags field of the security header MUST contain the SEC_EXCHANGE_PKT flag (0x0001).");
//following capture is wrong, as after decoding the length would changed
//site.CaptureRequirementIfAreEqual<uint>((uint)securityPdu.securityExchangePduData.clientRandom.Length, securityPdu.securityExchangePduData.length, 413,
//"In Security Exchange PDU Data (TS_SECURITY_PACKET) the length field indicates the size in bytes of the buffer containing the encrypted client random value, not including the header length.");
}