/*

* Copyright (c) 2004-2009 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: 

* CPKIXCertChainHelper class implementation

*

*/

/**

 @file 

 @internalTechnology

*/

#ifndef __PKIXCERTCHAINHELPER_H__

#define __PKIXCERTCHAINHELPER_H__

#include <e32base.h>

class RFs;

class CPKIXCertChainBase;

class CPKIXValidationResult;

class CUnifiedCertStore;

/**

 * An helper object that used to implement the valdiation functionality of the

 * CPKICCertChain interface.  This is done by creating and initialising a

 * unified certificate store, and then calling through to the implementation in

 * CPKIXCertChainBase.

 */

NONSHARABLE_CLASS(CPKIXCertChainHelper) : public CActive

	{

public:

	static CPKIXCertChainHelper* NewL(RFs& aFs);

	virtual ~CPKIXCertChainHelper();

	CUnifiedCertStore& CertStore();

	/** Validates the chain. */

	void Validate(CPKIXCertChainBase& aCertChain,

				  CPKIXValidationResult& aValidationResult, 

				  const TTime& aValidationTime,

				  TRequestStatus& aStatus);

	/** Validates the chain. */

	void Validate(CPKIXCertChainBase& aCertChain,

				  CPKIXValidationResult& aValidationResult, 

				  const TTime& aValidationTime,

				  const CArrayPtr<HBufC>& aInitialPolicies, 

				  TRequestStatus& aStatus);

	/** Cancels an asynchronous Validate() operation. */

	void CancelValidate();

private:

	CPKIXCertChainHelper();

	void ConstructL(RFs& aFs);

	void StartValidate(CPKIXCertChainBase& aCertChain,

					   CPKIXValidationResult& aValidationResult, 

					   const TTime& aValidationTime,

					   const CArrayPtr<HBufC>* aInitialPolicies, 

					   TRequestStatus& aStatus);

	void InitializeCertStore();

	void ValidateChainL();

private:

	virtual void RunL();

	virtual TInt RunError(TInt aError);

	virtual void DoCancel();

	void Complete(TInt aError);

private:

	enum TState

		{

		EIdle,

		EInitializeCertStore,

		EValidateChain

		};

	CUnifiedCertStore*		iCertStore;

	TBool					iCertStoreInitialized;

	TState					iState;

	// Client parameters

	CPKIXCertChainBase*		iCertChain;

	CPKIXValidationResult*	iValidationResult;

	TTime					iValidationTime;

	const CArrayPtr<HBufC>*	iInitialPolicies;

	TRequestStatus*			iClientStatus;

	};

#endif