// Copyright (c) 2007-2009 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:

 // e32test\earlyextension\d_testearlyextension.cpp

 // 

 //

 #include <kernel/kernel.h>

 #include "d_wsdextension.h"

 _LIT(KWsdExtName, "D_WSDEXTENSION.LDD");

 /** Factory class */

 class DWsdExtLddFactory : public DLogicalDevice

 	{

 public:

 	DWsdExtLddFactory();

 	virtual TInt Install();

 	virtual void GetCaps(TDes8 &aDes) const;

 	virtual TInt Create(DLogicalChannelBase*& aChannel);

 	static TInt iData;

 	};

 /** Logical channel */

 class DWsdExtension : public DLogicalChannelBase

 	{

 public:

 	DWsdExtension();

 	~DWsdExtension();

 protected:

 	virtual TInt DoCreate(TInt aUnit, const TDesC8* anInfo, const TVersion& aVer);

 	virtual TInt Request(TInt aReqNo, TAny* a1, TAny* a2);

 	virtual TInt RequestUserHandle(DThread* aThread, TOwnerType aType);

 private:

 	DThread* iClient;

 	};

 TInt DWsdExtLddFactory::iData = 0xEFEFEFEF;

 /** Factory class */

 DWsdExtLddFactory::DWsdExtLddFactory()

 	{

     iParseMask=0;

     iUnitsMask=0;

 	}

 /** Entry point for this driver */

 //DECLARE_EXTENSION_WITH_PRIORITY(LATE_EXTENSION_PRIORITY)

 DECLARE_STANDARD_EXTENSION()

 	{

 	Kern::Printf("D_WSDEXTENSION.LDD Start");

 	DWsdExtLddFactory* device = new DWsdExtLddFactory;

 	if(!device)

 		return KErrNoMemory;

 	TInt r = Kern::InstallLogicalDevice(device);

 	return r;

 	}

 DECLARE_EXTENSION_LDD()

 	{

 	Kern::Printf("D_WSDEXTENSION.LDD Start 2");

 	return new DWsdExtLddFactory;

 	}

 /** Second stage constuctor */

 TInt DWsdExtLddFactory::Install()

 	{

 	Kern::Printf("D_WSDEXTENSION.LDD Install");

     return(SetName(&KWsdExtName));

 	}

 /** Device capabilities */

 void DWsdExtLddFactory::GetCaps(TDes8& aDes)const

 	{

 		aDes.FillZ();

 	}

 /** Create logical channel, only open of one channel is allowed at a time */

 TInt DWsdExtLddFactory::Create(DLogicalChannelBase*& aChannel)

 	{

     if (iOpenChannels != 0) //A Channel is already open

 		return KErrInUse;

     aChannel = new DWsdExtension;

     if(!aChannel)

 		return KErrNoMemory;

     return KErrNone;

 	}

 /** Create channel */

 TInt DWsdExtension::DoCreate(TInt /*aUnit*/, const TDesC8* /*aInfo*/, const TVersion& /*aVer*/)

 	{

 	return KErrNone;

 	}

 /** Constructor of Logical channel */

 DWsdExtension::DWsdExtension()

 	{

 	iClient = &Kern::CurrentThread();

 	((DObject*)iClient)->Open();

 	}

 /** Destructor */

 DWsdExtension::~DWsdExtension()

 	{

 	// Close our reference on the client thread

 	Kern::SafeClose((DObject*&)iClient,NULL);

 	}

 /** Handle user side requests */

 TInt DWsdExtension::Request(TInt aReqNo, TAny* a1, TAny*)

 	{

 	switch(aReqNo)

 		{

 		case (RLddWsdExtension::EGET_STATIC_DATA):

 			{ 

 				TInt i=0;

 				i=DWsdExtLddFactory::iData;

 				kumemput(a1, &DWsdExtLddFactory::iData, sizeof(TInt));

 				return KErrNone;

 			}

 		}

 	return KErrNotSupported;

 	}

 /** Restricting handle duplication */

 TInt DWsdExtension::RequestUserHandle(DThread* aThread, TOwnerType aType)

 	{

 	if (aType!=EOwnerThread || aThread!=iClient)

 		return KErrAccessDenied;

 	return KErrNone;

 	}