/*

* Copyright (c) 2002 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: 

*    Implementation for the CDosExtensionBase class

*

*/

#include "dosextensionbase.h"

#include "dosclientserver.h"

#include "dosserver.h"

#include "dos_debug.h"

#include <e32svr.h>

//

// ---------------------------------------------------------

// CDosExtensionBase::ExecuteMessageL

// ---------------------------------------------------------

//  

EXPORT_C TInt CDosExtensionBase::ExecuteMessageL(const RMessage2& aMessage)

{

    API_TRACE_( "[DOSSERVER] CDosExtensionBase::ExecuteMessageL(...)" );

	__ASSERT_DEBUG(aMessage.Function() == ECallFunction, 

		PanicClient(aMessage,EPanicIllegalFunction));

	TInt retVal(KErrNone);

	TBool parameterModifiedByDSY(EFalse);

	// Get data from RMessage

	TExtensionParPckg extPars;

	aMessage.ReadL(0, extPars);

	TInt dataLength(extPars().iParLength);

	if (dataLength >= 0)

	{

		HBufC8* dataBuffer = HBufC8::NewMaxLC( dataLength );

		TPtr8 dataPtr = dataBuffer->Des();

		aMessage.ReadL( 1, dataPtr );

		// Check autocomplete flag

		TUint autoCompl(aMessage.Int2());

		if (autoCompl == KAutoComplete)

		{

            COM_TRACE_4( "[DOSSERVER] MDosExtensionBaseDSY::CallFunctionL(0x%x,0x%x,0x%x,0x%x)"

                ,extPars().iFunc

                ,dataPtr.Ptr()

                ,dataPtr.Length()

                ,autoCompl );

			retVal = CallFunctionL(extPars().iFunc, const_cast<TUint8*>(dataPtr.Ptr()), dataPtr.Length(), parameterModifiedByDSY);

			if((retVal == KErrNone) && parameterModifiedByDSY)

			{

				// Write over client's parameters

				retVal = aMessage.Write(1, dataPtr);

			}

		}

		else

		{

			COM_TRACE_3( "[DOSSERVER] MDosExtensionBaseDSY::CallFunctionAndCompleteL(0x%x,0x%x,0x%x)"

                ,extPars().iFunc

                ,dataPtr.Ptr()

                ,dataPtr.Length() );

            CallFunctionAndCompleteL(extPars().iFunc, const_cast<TUint8*>(dataPtr.Ptr()), dataPtr.Length(), aMessage);

		}

		CleanupStack::PopAndDestroy(); // dataBuffer

	}

	else

	{

		// Client passed negative parameter length

		retVal = KErrGeneral;

	}

	return retVal;

}

//

// ---------------------------------------------------------

// CDosExtensionBase::CompleteRequest

// ---------------------------------------------------------

//  

EXPORT_C void CDosExtensionBase::CompleteRequest(const RMessage2& aMessage, TInt aError, TAny* aPar, TInt aParLength, TBool aParameterModified) const

{

	// Write over client's parameters

	if ((aError == KErrNone) && aParameterModified)

	{

		TPtrC8 ptr(static_cast<TUint8*>(aPar), aParLength);

		aError = aMessage.Write(1, ptr);

	}

	RequestComplete(aMessage, aError);

}