/*

* Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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: 

*	  This class handles data exchange via SAP Socketection initiated by a client

*

*/

#ifndef BT_SAP_SOCKET_HANDLER_H

#define BT_SAP_SOCKET_HANDLER_H

//	INCLUDES

#include <e32base.h>

#include <btsdp.h>

#include "BTSapMessage.h" // KMaxMsgSize

#include "BTSapSniffHandler.h"

enum TBTSapSocketState

	{

	EBTSapSocketStateListen,

	EBTSapSocketStateRecv,

	EBTSapSocketStateSend,

	EBTSapSocketStateCheckSecurity,

	EBTSapSocketStateRecvWrong

	};

// FORWARD DECLARATIONS

class CBTEngDiscovery;

class CBTSapServerState;

class CBTSapRequestHandler;

class CBTSapSecurityHandler;

class TBTDevAddr;

// CLASS DECLARATION

/**

* SAP Bluetooth socket connection handler class.

*/

class CBTSapSocketHandler : public CActive

	{

private:

	class TState

		{

	public:

		TState(RSocket& aSocket);

		virtual void Enter(TRequestStatus& aStatus) = 0;

		virtual TBTSapSocketState Complete(TInt aReason = KErrNone) = 0;

		virtual void Cancel() = 0;

	protected:

		RSocket& iSocket;

		};

	class TStateListen : public TState

		{

	public:

		TStateListen(RSocketServ& aSockServ, RSocket& aSocket,	 RSocket& aListener, TUint aChannel);

		void Enter(TRequestStatus& aStatus);

		TBTSapSocketState Complete(TInt aReason);

		void Cancel();

	private:

		RSocketServ& iSockServ;

		RSocket& iListener;

		TUint& iChannel;

		};

	class TStateRecv : public TState

		{

	public:

		TStateRecv(RSocket& aSocket, CBTSapRequestHandler& aRequestHandler, CBTSapSniffHandler** aSniffHandler);

		void Enter(TRequestStatus& aStatus);

		TBTSapSocketState Complete(TInt aReason);

		void Cancel();

	private:

		TBuf8<KMaxMsgSize> iRequestData;

		TSockXfrLength iSockXfrLength;

		CBTSapRequestHandler& iRequestHandler;

        CBTSapSniffHandler** iSniffHandler;

		};

	class TStateSend : public TState

		{

	public:

		TStateSend(RSocket& aSocket);

		void Enter(TRequestStatus& aStatus);

		TBTSapSocketState Complete(TInt aReason);

		void Cancel();

		void SetResponseData(const TDesC8& aResponseData);

	private:

		TBuf8<KMaxMsgSize> iResponseData;

		};

	class TStateCheckSecurity : public TState

		{

	public:

		TStateCheckSecurity(RSocket& aSocket, CBTSapSecurityHandler*& aSecurityHandler);

		void Enter(TRequestStatus& aStatus);

		TBTSapSocketState Complete(TInt aReason);

		void Cancel();

	private:

		CBTSapSecurityHandler*& iSecurityHandler;

		};

public:

	// Constructors

	static CBTSapSocketHandler* NewL(CBTSapServerState& aServerState, CBTSapRequestHandler& aRequestHandler);

	// Destructor

	~CBTSapSocketHandler();

private:	 // From CActive

	/**

	* DoCancel() has to be implemented by all the classes deriving CActive.

	* Request cancellation routine.

	* @param none

	* @return none 

	*/

	void DoCancel();

	/**

	* RunL is called by framework after request is being completed.

	* @param nones

	* @return none 

	*/

	void RunL();

public:	   

	/**

	* Listen for incoming SAP socket connection

	* @param	None

	* @return	None.

	*/		  

	void Listen();

	/**

	* Send response message back to the SAP client

	* @return	None.

	*/	  

	void Send(const TDes8& aResponseData);

	TInt GetRemoteBTAddress(TBTDevAddr& aBTDevAddr);

    TBool IsSapConnected();

private:

	// Two-phase constructor

	void ConstructL();

	// Default constructor

	CBTSapSocketHandler(CBTSapServerState& aServerState, CBTSapRequestHandler& aRequestHandler);

	void RegisterBTSapServiceL();

	void UnregisterBTSapServiceL();

private:

	void ChangeState();

private:

	CBTSapServerState& iServerState;

	CBTSapSecurityHandler* iSecurityHandler;

	TSdpServRecordHandle iSdpHandle; // Registering handle 

	CBTEngDiscovery* iBtDiscovery; // Bluetooth engine

	RSocketServ iSockServ; // Socket server

	RSocket iSocket; // Data socket 

	RSocket iListener; // Listenning socket for incoming connection

	TUint iChannel; // Local BT channel

	TStateListen iStateListen;

	TStateRecv iStateRecv;

	TStateSend iStateSend;

	TStateCheckSecurity iStateCheckSecurity;

	RPointerArray <TState> iStateArray;

	TBTSapSocketState iCurrentState;

	TBTSapSocketState iNextState;

    CBTSapSniffHandler* iSniffHandler;

	};

#endif		// BT_SAP_SOCKET_HANDLER_H	 

// End of File