/*

* Copyright (c) 2003-2009 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: IKEv2 Proposal handling.

*

*/

#ifndef __IKEV2PROPOSAL_H_

#define __IKEV2PROPOSAL_H_

#include <e32base.h>

#include "ikepolparser.h"

#include "ikemsgheader.h"

class CIkev2Payloads;

class TPayloadIkev2;

class TProposalIkev2;

class TTransformIkev2;

class CIkeV2Identity;

class TIkev2SAData;

class TIkeV2IpsecSAData;

class Ikev2Proposal

{

public:

	static HBufC8* FromPolicyToProposaL(TIkev2SAData& aIkeSaData, 

                                        const TDesC8& aRekeySpi, 

                                        TInt aDHGroupGuess, 

                                        TBool aRekey=EFalse);	

	static HBufC8* BuildSaResponseL(TProposalIkev2* aAcceptedProp, CIkev2Payloads* aAcceptedTrans);

	static TBool GetSelectedProposalData(TIkev2SAData& aIkev2SaData,

                                         TIkeV2IpsecSAData& aChildSaData, 

                                         const CIkev2Payloads& aAcceptedProp, 

                                         const TProposalIkev2& aProp);	

	static TBool VerifySaResponseL(TIkev2SAData& aIkeSaData, 

                                   TIkeV2IpsecSAData& aIpsecSaData, 

                                   const TDesC8& aReferenceSaData, 

                                   const CIkev2Payloads& aRespProp);

	static TBool VerifySaRequestAndGetProposedSaBufferL(TIkev2SAData& aIkeSaData, 

                                                        TIkeV2IpsecSAData& aIpsecSaData,

                                                        const TDesC8& aReferenceSaData, 

                                                        const CIkev2Payloads& aProposed,

                                                        HBufC8*& aProposedSaBuffer);

	static TBool VerifyProposaL(CIkev2Payloads* aReference, TProposalIkev2* aProposal, TIkev2SAData& aIkev2SaData);

	static TBool CompareTransforms(CArrayFixFlat<TTransformIkev2*>* aRefTrans,

								   CArrayFixFlat<TTransformIkev2*>* aTrans);  

	static HBufC8* GetPSKFromPolicyL(CIkeData* aHostData);

	static TBool IkeSaRekey(CIkev2Payloads* aIkeMsg);

	static TBool GetRekeySpi(CIkev2Payloads* aIkeMsg, TIkeSPI& aSPI);

	static void ChangeSpiInProposal(HBufC8* aSaBfr, TIkeSPI& aSPI);	

	static TUint16 GetDHGroup(TInt aDHGroup);

	static CIkeV2Identity* GetRemoteIdentityL(CIkeData* aHostData);	

	static inline TBool PkiServiceNeeded(CIkeData* aHostData)

	{

	    ASSERT(aHostData); 

	    if ( aHostData->iCAList && aHostData->iCAList->Count() )

		    return ETrue;  

        else return EFalse;

	}

};

#endif