/*

* Copyright (c) 2005 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:  A interface definition for reading HDC related parameters

*

*/

#ifndef HDC_TO_PAOS_INTERFACE_H

#define HDC_TO_PAOS_INTERFACE_H

//INCLUDES

#include <e32base.h>

const TInt KMaxHdcVersionStringLength(40); 

const TInt KHdcNonceLength(8); 

_LIT( KHdcDllFileName, "hdcutil.dll" ); 

const TUid KHdcUtilDllUid = { 0x10272D3A };

const TInt KMaxHdcKeyInfoLength(20);

typedef TBuf8<KMaxHdcKeyInfoLength> HdcKeyInfo;

typedef RArray<HdcKeyInfo> HdcKeyInfoList;

const TInt KMaxURLLength(255);

typedef TBuf8<KMaxURLLength> HdcTrustedDomain;

typedef RArray<HdcTrustedDomain> HdcTrustedDomainList;

/*!

MHdcToPaosInterface implementor is assumed to be part of a DLL that can be

loaded dynamically using RLibrary::Load. It should have <KHdcUtilDllUid> as

its uid3 and it should be named <KHdcDllFileName>. There should be a NewLC

implementation in the first ordinal of the DLL that returns a pointer to

a CHdcToPaosInterface derived object to allow dynamic loading.

*/

class CHdcToPaosInterface : public CBase

    {

    public:

        /**

        * Returns HDC version string

        * @param aVersion Current version of the HDC. max length of version is 

        *    KMaxHdcVersionStringLength

        * @return KErrNone, KErrArgument

        */

        virtual TInt Version( TDes8& aVersion ) const = 0;

        /**

        * Create and save new nonce. 

        * @param aNonce Nonce. Length of nonce is KHdcNonceLength

        */

        virtual void CreateNewNonceL( TDes8& aNonce ) = 0;

        /**

        * Get current nonce value from the database which has been created using

        *    CreateNonceL().

        * @param aNonce Nonce. Length of nonce is KHdcNonceLength

        */

        virtual void NonceL( TDes8& aNonce ) const = 0;

        /**

        * Return Keyinfo list array which are defined in HDCKeyInfo.h

        * @param aList Keyinfo list. 0..N keyinfos. See typedefinitions.

        */

        virtual void HdcKeyInfos( HdcKeyInfoList& aList) = 0;

        /**

        * Get a list of trusted domains which PAOS can use to determine valid domains.

        * @param aList See typedefinitions.

        **/

        virtual void TrustedDomainsL( HdcTrustedDomainList& aList ) = 0;    

    };

#endif // HDC_TO_PAOS_INTERFACE_H