/*

* 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: 

*

*/

/**

 @file

 @internalComponent

 @released

*/

#include <e32std.h>

#include <e32debug.h>

#include "randomimpl.h"

#include "pluginentry.h"

#include "pluginconfig.h"

using namespace HwCrypto;

_LIT(KLddFileName,"cryptoldd.ldd");

_LIT(KPddFileName,"crypto.h4.pdd");

CRandomImpl* CRandomImpl::NewL()

	{

	CRandomImpl* self = NewLC();

	CleanupStack::Pop(self);

	return self;

	}

CRandomImpl* CRandomImpl::NewLC()

	{

	CRandomImpl* self = new(ELeave)CRandomImpl();

	CleanupStack::PushL(self);

	self->ConstructL();

	return self;

	}

void CRandomImpl::ConstructL()

	{

	//	RDebug::Printf("CRandomImpl::ConstructL");

	// Load PDD

    TInt r = User::LoadPhysicalDevice(KPddFileName);

	if((r != KErrNone) && (r != KErrAlreadyExists)) User::Leave(r);

	// Load LDD

    r = User::LoadLogicalDevice(KLddFileName);

	if((r != KErrNone) && (r != KErrAlreadyExists)) User::Leave(r);

	// Open driver handle

	User::LeaveIfError(iCryptoDriver.Open());

	}

void CRandomImpl::GenerateRandomBytesL(TDes8& aDest)

	{

    TRequestStatus status;

	iCryptoDriver.Random(status, aDest);

	User::WaitForRequest(status);

	User::LeaveIfError(status.Int());

	}

CRandomImpl::CRandomImpl()

	{

	}

const CExtendedCharacteristics* CRandomImpl::GetExtendedCharacteristicsL()

	{

	return StaticGetExtendedCharacteristicsL();

	}

CExtendedCharacteristics* CRandomImpl::StaticGetExtendedCharacteristicsL()

	{

	// All Symbian software plug-ins have unlimited concurrency, cannot be reserved

	// for exclusive use and are not CERTIFIED to be standards compliant.

	return CExtendedCharacteristics::NewL(KMaxTInt, EFalse);

	}

void CRandomImpl::GetCharacteristicsL(const TCharacteristics*& aPluginCharacteristics)

	{

	TInt randomNum = sizeof(KRandomCharacteristics)/sizeof(TRandomCharacteristics*);

	for (TInt i = 0; i < randomNum; i++)

		{

		if (KRandomCharacteristics[i]->cmn.iImplementationUID == ImplementationUid().iUid)

			{

			aPluginCharacteristics = KRandomCharacteristics[i];

			break;

			}

		}

	}

TAny* CRandomImpl::GetExtension(TUid /*aExtensionId*/)

	{

	return NULL;

	}

TUid CRandomImpl::ImplementationUid() const

	{

	return KCryptoPluginRandomUid;

	}

CRandomImpl::~CRandomImpl()

	{

	iCryptoDriver.Close();

	//	RDebug::Printf("CRandomImpl::~CRandomImpl");

	}

void CRandomImpl::Close()

	{

	delete this;

	}

// All crypto plugins must implement this, to reset

// hardware if required. Do nothing in this version

void CRandomImpl::Reset()

	{

	}

// End of file