/*

* Copyright (c) 2005-2009 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:

*

*/

#ifndef DATAVERIFY_H

#define DATAVERIFY_H

#include <e32base.h>

#include <f32file.h>

#include <e32cmn.h>

#include "DataWrapperBase.h"

class CMD5;

/**

 * Implementation of DataVerify interface. 

 */

class CT_DataVerify : public CDataWrapperBase

	{

public:

	enum TDataVerifyMethod

		{

		EDataVerifyMethodUnknown = 0,

		EDataVerifyMethodMD5,

		};

private:

	CT_DataVerify();

protected:

	void ConstructL();

public:

	/**

	 * 2 phase constructor.

	 */

	static CT_DataVerify* NewL();	

	virtual TAny*	GetObject();	

	virtual TBool	DoCommandL(const TTEFFunction& aCommand, const TTEFSectionName& aSection, const TInt aAsyncErrorIndex);

	virtual ~CT_DataVerify();

	virtual void DoCmdVerifyData( const TTEFSectionName& aSection );

	virtual void VerifyData( const TDataVerifyMethod aMethod, const TFileName& aFileName, const TDesC& aChecksum );

	virtual void VerifyChecksumL( const TDesC8& aReferenceMD5Checksum, const TFileName& aDataFileName );

	virtual void VerifyChecksumL( const TDesC8& aReferenceMD5Checksum, const TDesC8& aData );

	virtual void VerifyFileL( const TFileName& aReferenceFileName, const TFileName& aDataFileName );

private:

	void VerifyBufferL( const TFileName& aReferenceFileName,const TDesC8& aData );

	void VerifyBufferL( const TDesC8& aReferenceData, const TDesC8& aData );

	TBool CompareBuffers( const TDesC8& aReferenceBuffer, const TDesC8& aDataBuffer );

	void ReadFileL(const TFileName& aFileName, TDes8& aBuf);

	void HashFileL( const TFileName& aFileName, TDes8& aDes );

	void WriteFileL( const TFileName& aFileName, const TDesC8& aData );

	void ConvertString2HexL( const TDesC8& aData, TDes8& aDes );

private:

	/** A handle to a file server session. */

	RFs iFs;

	/** An MD5 message digest.*/

	CMD5* iMD5;

	};

#endif	// DATAVERIFY_H