/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

// ConnectionImpl.cpp: implementation of the CConnectionImpl class.

//

//////////////////////////////////////////////////////////////////////

#include "stdafx.h"

#include "ConnectionImpl.h"

#include "RegistryImpl.h"

#include "ServerManager.h"

#ifdef _DEBUG

extern BOOL gDoLogging;

#endif

#define LOG_CONNECTION

#if defined(LOG_CONNECTION) && defined(_DEBUG)

#define TCDEBUGOPEN() if (gDoLogging) { this->m_DebugLog->WaitForAccess(); }

#define TCDEBUGLOGS(s) if (gDoLogging) { sprintf(this->m_DebugLogMsg,"%s", s); this->m_DebugLog->log(this->m_DebugLogMsg); }

#define TCDEBUGLOGA1(s, a1) if (gDoLogging) { sprintf(this->m_DebugLogMsg, s, a1); this->m_DebugLog->log(this->m_DebugLogMsg); }

#define TCDEBUGLOGA2(s, a1, a2) if (gDoLogging) { sprintf(this->m_DebugLogMsg, s, a1, a2); this->m_DebugLog->log(this->m_DebugLogMsg); }

#define TCDEBUGLOGA3(s, a1, a2, a3) if (gDoLogging) { sprintf(this->m_DebugLogMsg, s, a1, a2, a3); this->m_DebugLog->log(this->m_DebugLogMsg); }

#define TCDEBUGLOGA4(s, a1, a2, a3, a4) if (gDoLogging) { sprintf(this->m_DebugLogMsg, s, a1, a2, a3, a4); this->m_DebugLog->log(this->m_DebugLogMsg); }

#define TCDEBUGCLOSE() if (gDoLogging) { this->m_DebugLog->ReleaseAccess(); }

#else

#define TCDEBUGOPEN()

#define TCDEBUGLOGS(s)

#define TCDEBUGLOGA1(s, a1)

#define TCDEBUGLOGA2(s, a1, a2)

#define TCDEBUGLOGA3(s, a1, a2, a3)

#define TCDEBUGLOGA4(s, a1, a2, a3, a4)

#define TCDEBUGCLOSE()

#endif

//////////////////////////////////////////////////////////////////////

// Construction/Destruction

//////////////////////////////////////////////////////////////////////

CConnectionImpl::CConnectionImpl()

{

	m_ConnectSettings = NULL;

	m_ClientList = NULL;

	m_Status = eDisconnected;

	m_Registry = NULL;

	m_ConnectionID = 0;

	m_OsError = 0;

	m_BaseComm = NULL;

	m_BaseProtocol = NULL;

	m_BaseCommHandle = NULL;

	m_BaseProtocolHandle = NULL;

	// message processing thread flags and handles

	m_MessageProcessorState = MP_NONE;

	m_ExitMessageProcessor = false;

	m_PauseMessageProcessing = false;

	m_StartMessageProcessing = false;

	m_hMessageProcessorExittedEvent = NULL;

	m_hMessageProcessorStoppedEvent = NULL;

	m_hMessageProcessorStartedEvent = NULL;

	m_hMessageProcessorThread = NULL;

	m_dwMessageProcessorThreadId = 0;

	m_NextRetryTime = m_RetryTimeoutTime = 0;

	m_NextFlushFileTime = 0;

}

CConnectionImpl::CConnectionImpl(ConnectData conData, DWORD connectionId)

{

#ifdef _DEBUG

	if (gDoLogging)

	{

		m_DebugLog = new TCDebugLog("TCF_ConnectionLog", connectionId);

		m_DebugLog2 = new TCDebugLog("TCF_ProcessorLog", connectionId);

	}

	else

	{

		m_DebugLog = NULL;

		m_DebugLog2 = NULL;

	}

#else

	m_DebugLog = NULL;

	m_DebugLog2 = NULL;

#endif

	TCDEBUGOPEN();

	TCDEBUGLOGA1("CConnectionImpl::CConnectionImpl id = %d\n", connectionId);

	m_ConnectSettings = new ConnectData();

	memcpy(m_ConnectSettings, &conData, sizeof(ConnectData));

	m_ClientList = new ClientList();

	m_ClientList->clear();

	m_Status = eDisconnected;

	m_Registry = new CRegistryImpl(connectionId);

	m_ConnectionID = connectionId;

	m_BaseComm = NULL;

	m_BaseProtocol = NULL;

	m_BaseCommHandle = NULL;

	m_BaseProtocolHandle = NULL;

	// message processing thread flags and handles

	m_MessageProcessorState = MP_NONE;

	m_ExitMessageProcessor = false;

	m_PauseMessageProcessing = false;

	m_StartMessageProcessing = false;

	// create named events

	char eventName[100];

	sprintf(eventName, "%s%d", MESSAGEPROCESSOR_EXITEVENT_BASENAME, connectionId);

	m_hMessageProcessorExittedEvent = ::CreateEvent(NULL, FALSE, FALSE, eventName);

	sprintf(eventName, "%s%d", MESSAGEPROCESSOR_STOPEVENT_BASENAME, connectionId);

	m_hMessageProcessorStoppedEvent = ::CreateEvent(NULL, FALSE, FALSE, eventName);

	sprintf(eventName, "%s%d", MESSAGEPROCESSOR_STARTEVENT_BASENAME, connectionId);

	m_hMessageProcessorStartedEvent = ::CreateEvent(NULL, FALSE, FALSE, eventName);

	m_hMessageProcessorThread = NULL;

	m_dwMessageProcessorThreadId = 0;

	m_NextRetryTime = m_RetryTimeoutTime = 0;

	m_NextFlushFileTime = 0;

	m_OsError = 0;

	TCDEBUGCLOSE();

}

CConnectionImpl::~CConnectionImpl()

{

	TCDEBUGOPEN();

	TCDEBUGLOGS("CConnectionImpl::~CConnectionImpl\n");

	// terminate the message processor thread if running

	if (m_hMessageProcessorThread != NULL)

	{

		BOOL t = ::TerminateThread(m_hMessageProcessorThread, 0);

		::CloseHandle(m_hMessageProcessorThread);

	}

	if (m_hMessageProcessorExittedEvent != NULL)

	{

		::CloseHandle(m_hMessageProcessorExittedEvent);

	}

	if (m_hMessageProcessorStoppedEvent != NULL)

	{

		::CloseHandle(m_hMessageProcessorStoppedEvent);

	}

	if (m_ConnectSettings)

		delete m_ConnectSettings;

	if (m_ClientList)

	{

		m_ClientList->clear();

		delete m_ClientList;

	}

	if (m_Registry)

	{

		delete m_Registry;

	}

	if (m_BaseComm)

	{

		delete m_BaseComm;

	}

	if (m_BaseCommHandle)

	{

		::FreeLibrary(m_BaseCommHandle);

	}

	if (m_BaseProtocol)

	{

		delete m_BaseProtocol;

	}

	if (m_BaseProtocolHandle)

	{

		::FreeLibrary(m_BaseProtocolHandle);

	}

	TCDEBUGCLOSE();

	if (m_DebugLog)

		delete m_DebugLog;

	if (m_DebugLog2)

		delete m_DebugLog2;

}

BOOL CConnectionImpl::IsEqual(CConnection* connection)

{

	TCDEBUGOPEN();

	TCDEBUGLOGS("CConnectionImpl::IsEqual\n");

	BOOL equal = FALSE;

	if (strcmp(m_ConnectSettings->connectType, connection->m_ConnectSettings->connectType) == 0)

	{

		if (m_BaseComm)

		{

			if (m_BaseComm->IsConnectionEqual(connection->m_ConnectSettings))

			{

				equal = TRUE;

			}

		}

		else

		{

			equal = TRUE;

		}

	}

	TCDEBUGCLOSE();

	return equal;

}

BOOL CConnectionImpl::IsEqual(pConnectData pConData)

{

	TCDEBUGOPEN();

	TCDEBUGLOGS("CConnectionImpl::IsEqual\n");

	BOOL equal = FALSE;

	if (strcmp(m_ConnectSettings->connectType, pConData->connectType) == 0)

	{

		if (m_BaseComm)

		{

			if (m_BaseComm->IsConnectionEqual(pConData))

			{

				equal = TRUE;

			}

		}

		else

		{

			equal = TRUE;

		}

	}

	TCDEBUGCLOSE();

	return equal;

}

long CConnectionImpl::DoConnect()

{

	TCDEBUGOPEN();

	TCDEBUGLOGS("CConnectionImpl::DoConnect\n");

	long ret = TCAPI_ERR_NONE;

	if (m_BaseComm && m_BaseProtocol)

	{

		ret = m_BaseComm->OpenPort();

		if (ret != TCAPI_ERR_NONE)

		{

			m_OsError = m_BaseComm->m_lastCommError;

			TCDEBUGLOGA1(" m_BaseComm->OpenPort = %d\n", ret);

		}

	}

	else

	{

		ret = TCAPI_ERR_UNKNOWN_MEDIA_TYPE;

	}

	if (ret == TCAPI_ERR_NONE)

	{

		m_Status = eConnected;

		TCDEBUGCLOSE();

		StartProcessing();

	}

	else

	{

//		if (m_BaseComm != NULL)

//		{

//			delete m_BaseComm;

//			m_BaseComm = NULL;

//		}

		TCDEBUGCLOSE();

	}

	return ret;

}

long CConnectionImpl::DoDisconnect()

{

	TCDEBUGOPEN();

	TCDEBUGLOGS("CConnectionImpl::DoDisconnect\n");

	long ret = TCAPI_ERR_NONE;

	if (IsConnected())

	{

		ret = m_BaseComm->ClosePort();

//		delete m_BaseComm;

//		m_BaseComm = NULL;

	}

	m_Status = eDisconnected;

	TCDEBUGCLOSE();

	return ret;

}

BOOL CConnectionImpl::AddClient(CClient* client)

{

	TCDEBUGOPEN();

	TCDEBUGLOGS("CConnectionImpl::AddClient\n");

	BOOL ok = TRUE;

	m_ClientList->push_back(client);

	TCDEBUGCLOSE();

	return ok;

}

long CConnectionImpl::DoSendMessage(long encodeOption, BYTE protocolVersion, BOOL useMsgId, BYTE msgId, DWORD msgLength, BYTE* pMsg)

{

	TCDEBUGOPEN();

	TCDEBUGLOGS("CConnectionImpl::DoSendMessage\n");

	long err = TCAPI_ERR_NONE;

	if (IsRetryInProgress())

	{

		err = TCAPI_ERR_COMM_RETRY_IN_PROGRESS;

	}

	else if (IsRetryTimedOut())

	{

		err = TCAPI_ERR_COMM_TIMEOUT;

	}

	else if (m_Status == eConnected)

	{

		BYTE* encodedMessage = new BYTE[msgLength + 40]; // add enough for header (msgLength may be 0)

		// if msgLength == 0, then encodeOption SHOULD be ENCODE_FORMAT since com expects to send something!

		if (encodeOption == ENCODE_FORMAT)

		{

#ifdef _DEBUG

			char msg[200]; msg[0] = '\0';

			int len = (msgLength > 30) ? 30 : msgLength;

			for (int i = 0; i < len; i ++)

			{

				sprintf(msg, "%s%02.2x ", msg, pMsg[i]);

			}

			sprintf(msg, "%s\n", msg);

			TCDEBUGLOGS(msg);

#endif

			// msgLength maybe 0 and pMsg maybe NULL (we're not sending a raw message, just a protocol header)

			msgLength = m_BaseProtocol->EncodeMessage(pMsg, msgLength, protocolVersion, msgId, encodedMessage, msgLength+40);

#ifdef _DEBUG

			msg[0] = '\0';

			len = (msgLength > 30) ? 30 : msgLength;

			for (i = 0; i < len; i ++)

			{

				sprintf(msg, "%s%02.2x ", msg, encodedMessage[i]);

			}

			sprintf(msg, "%s\n", msg);

			TCDEBUGLOGS(msg);

#endif

			err = m_BaseComm->SendDataToPort(msgLength, encodedMessage);

		}

		else

		{

#ifdef _DEBUG

			char msg[200]; msg[0] = '\0';

			int len = (msgLength > 30) ? 30 : msgLength;

			for (int i = 0; i < len; i ++)

			{

				sprintf(msg, "%s%02.2x ", msg, pMsg[i]);

			}

			sprintf(msg, "%s\n", msg);

			TCDEBUGLOGS(msg);

#endif

			// msgLength != 0 and pMsg != NULL

			err = m_BaseComm->SendDataToPort(msgLength, pMsg);

		}

		delete[] encodedMessage;

		TCDEBUGLOGS("CConnectionImpl::DoSendMessage done\n");

		if (err == TCAPI_ERR_COMM_ERROR)

		{

			EnterRetryPeriod(err, true, m_BaseComm->m_lastCommError);

			m_OsError = m_BaseComm->m_lastCommError;

		}

	}

	else

	{

		err = TCAPI_ERR_MEDIA_NOT_OPEN;

	}

	TCDEBUGLOGA1("CConnectionImpl::DoSendMessage err = %d\n", err);

	TCDEBUGCLOSE();

	return err;

}

long CConnectionImpl::DoRetryProcessing()

{

	long err = TCAPI_ERR_NONE;

	// if not connected

	//   return no error

	if (m_BaseComm == NULL /*|| m_BaseComm->IsConnected() == false*/)

		return TCAPI_ERR_MEDIA_NOT_OPEN;

	// if retry not in progress && retry not timed out

	//   return no error

	if (!IsRetryInProgress() && !IsRetryTimedOut())

		return TCAPI_ERR_NONE;

//	TCDEBUGOPEN();

//	TCDEBUGLOGS("CConnectionImpl::DoRetryProcessing\n");

//	TCDEBUGCLOSE();

	// if retry timeout flag already set

	//   return timeout error

	if (IsRetryTimedOut())

		return TCAPI_ERR_COMM_TIMEOUT;

	// get current time

	time_t ctime;

	time(&ctime);

	// if retry timeout period has expired

	if (ctime >= m_RetryTimeoutTime)

	{

		TCDEBUGOPEN();

		TCDEBUGLOGS("CConnectionImpl::DoRetryProcessing retry timeout\n");

		TCDEBUGCLOSE();

		// send timeout error to all clients

		NotifyClientsCommError(TCAPI_ERR_COMM_TIMEOUT);

		// close comm port

		m_BaseComm->ClosePort();

		// set retry timeout flag

		SetRetryTimedOut();

		// return retry timeout error

		err = TCAPI_ERR_COMM_TIMEOUT;

	}

	// else if retry time has passed

	else if (ctime >= m_NextRetryTime)

	{

		TCDEBUGOPEN();

		TCDEBUGLOGS("CConnectionImpl::DoRetryProcessing retry time\n");

		TCDEBUGCLOSE();

		// close comm port

		// reopen comm port

		m_BaseComm->ClosePort();

		int openErr = m_BaseComm->OpenPort();

		// if comm error

		if (openErr != TCAPI_ERR_NONE)

		{

			// set next retry time

			// return comm error

			m_NextRetryTime = ctime + m_ConnectSettings->retryInterval;

			err = TCAPI_ERR_COMM_RETRY_IN_PROGRESS;

			m_OsError = m_BaseComm->m_lastCommError;

		}

		else

		{

		TCDEBUGOPEN();

		TCDEBUGLOGS("CConnectionImpl::DoRetryProcessing reconnected\n");

		TCDEBUGCLOSE();

			// send reconnect warning to all clients

			NotifyClientsCommError(TCAPI_INFO_COMM_RECONNECTED);

			// set connected

			SetConnected();

			err = TCAPI_ERR_NONE;

		}

	} 

	else // still in retry

	{

		err = TCAPI_ERR_COMM_RETRY_IN_PROGRESS;

	}

//	TCDEBUGOPEN();

//	TCDEBUGLOGA1("CConnectionImpl::DoRetryProcessing err = %d\n", err);

//	TCDEBUGCLOSE();

	return err;

}

long CConnectionImpl::EnterRetryPeriod(long commErr, bool passOsErr, DWORD osErr)

{

	TCDEBUGOPEN();

	TCDEBUGLOGS("CConnectionImpl::EnterRetryPeriod\n");

	TCDEBUGCLOSE();

	long err = TCAPI_ERR_NONE;

	// set next retry time

	time_t ctime;

	time(&ctime);

	m_NextRetryTime = ctime + m_ConnectSettings->retryInterval;

	// set retry timeout time

	m_RetryTimeoutTime = ctime + m_ConnectSettings->retryTimeout;

	// send comm error to all clients

	NotifyClientsCommError(commErr, passOsErr, osErr);

	// set retry in progress flag

	SetRetryInProgress();

	return err;

}

BOOL CConnectionImpl::RemoveClient(CClient* client)

{

	TCDEBUGOPEN();

	TCDEBUGLOGS("CConnectionImpl::RemoveClient\n");

	BOOL found = FALSE;

	if (m_ClientList->size() != 0)

	{

		ClientList::iterator iter;

		for (iter = m_ClientList->begin(); iter != m_ClientList->end(); iter++)

		{

			if ((*iter)->GetClientId() == client->GetClientId())

			{