/*

* Copyright (c) 2008 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:  Implementation class for WMDRM DLA Handler

*

*/

#ifndef C_WMDRMDLAHANDLERIMPL_H

#define C_WMDRMDLAHANDLERIMPL_H

#include <e32base.h>

#include <f32file.h>

#include <wmdrmdlatypes.h>

class CWmDrmDlaHttpLicAcqPluginFw;

class CWmDrmDlaHttpMeteringPluginFw;

class CWmDrmDlaRequest;

/**

 *  Implementation class for WMDRM DLA Handler

 *

 *  @since S60 v9.1

 */

NONSHARABLE_CLASS( CWmDrmDlaHandlerImpl ) : public CActive

    {

public:

    static CWmDrmDlaHandlerImpl* NewL();

    static CWmDrmDlaHandlerImpl* NewLC();

    /**

    * Destructor.

    */

    virtual ~CWmDrmDlaHandlerImpl();

    /**

     * Checks if license acquisition for file is silent

     *

     * @param   aFile wmdrm file

     * @return  ETrue if license acquisition is silent

     * @leave   KErrNotFound if there is no handler for the file

     */

    TBool SilentL( const RFile& aFile );

    /**

     * Acquire license based on the file handle

     *

     * @param   aFile wmdrm file

     * @param   aContentUrl contains content URL on return. Can be NULL.

     * If it's not NULL, it must be freed by caller.  

     * @param   aHtmlData contains HTML data returned by license server

     *                    on return. Can be NULL.

     * If it's not NULL, it must be freed by caller.  

     */

    void AcquireLicenseL( const RFile& aFile, HBufC*& aContentUrl, 

                          HBufC*& aHtmlData );

    /**

     * Acquire license based on the file handle, asynchronous version

     *

     * @param   aFile wmdrm file

     * @param   aContentUrl contains content URL on completion. Can be NULL.

     * If it's not NULL, it must be freed by caller.  

     * @param   aHtmlData contains HTML data returned by license server

     *                    on completion. Can be NULL.

     * If it's not NULL, it must be freed by caller.  

     * @param   aStatus Request status. On completion contains the error code.

     */

    void AcquireLicense( const RFile& aFile, HBufC*& aContentUrl, 

                         HBufC*& aHtmlData, TRequestStatus& aStatus );

    /**

     * Acquire license based on the DRM Header

     *

     * @param   aDrmHeader DRM Header

     * @param   aErrorUrl URL where error code is sent. Can be NULL.

     * @param   aContentUrl contains content URL on return. Can be NULL.

     * If it's not NULL, it must be freed by caller.  

     * @param   aHtmlData contains HTML data returned by license server

     *                    on return. Can be NULL.

     * If it's not NULL, it must be freed by caller.  

     */

    void AcquireLicenseFromDrmHeaderL( const TDesC8& aDrmHeader, 

                                       HBufC* aErrorUrl,

                                       HBufC*& aContentUrl, 

                                       HBufC*& aHtmlData );

    /**

     * Acquire license based on the DRM Header, asynchronous version

     *

     * @param   aDrmHeader DRM Header

     * @param   aErrorUrl URL where error code is sent. Can be NULL.

     * @param   aContentUrl contains content URL on completion. Can be NULL.

     * If it's not NULL, it must be freed by caller.  

     * @param   aHtmlData contains HTML data returned by license server

     *                    on completion. Can be NULL.

     * If it's not NULL, it must be freed by caller.  

     * @param   aStatus Request status. On completion contains the error code.

     */

    void AcquireLicenseFromDrmHeader( const TDesC8& aDrmHeader, 

                                      HBufC* aErrorUrl,

                                      HBufC*& aContentUrl, 

                                      HBufC*& aHtmlData, 

                                      TRequestStatus& aStatus );

    /*

     * Cancels current and all queued license acquisition requests

     */

    void CancelLicenseAcquisition();

    /**

     * Handles metering certificate OTA

     *

     * @param   aCertificate metering certificate

     */

    void ProcessMeteringCertificateL( const TDesC8& aCertificate );

    /**

     * Handles metering certificate OTA, asynchronous version

     *

     * @param   aCertificate metering certificate

     * @param   aStatus Request status. On completion contains the error code.

     */

    void ProcessMeteringCertificate( const TDesC8& aCertificate, 

                                     TRequestStatus& aStatus );

    /*

     * Cancels current and all queued metering requests

     */

    void CancelMetering();

    /**

     * Sets the IAP to be used in the HTTP transactions

     *

     * @param   aIapId  Internet Access Point id

     */

    void SetIapId( TInt aIapId );

protected: // from base class CActive

    /**

    * From CActive Cancels async request.

    */

    void DoCancel();

    /**

    * From CActive Called when async request completes.

    */

    void RunL();

    /**

    * From CActive Called if RunL leaves.

    */

    TInt RunError( TInt aError );

private:

    CWmDrmDlaHandlerImpl();

    void ConstructL();

    void CompleteSelf();

    void CompleteClientRequest( TInt aError );

    void CompleteSyncRequest( TInt aError );

    /*

     * Takes next request to handling.

     * If synchronous request is available, it will be handled first.

     * Otherwise next async request is taken from the queue and handled.

     * If there aren't any requests, state is set to idle

     */

    void NextRequest();

    //State handlers

    /*

     * Completes current request and retrieves next one, 

     * if available, to handling

     */

    void Completed( TInt aError );

    /*

     * Makes asynchronous call to CWmDrmDlaHttpPluginFw to 

     * acquire license from drm header

     */

    void AcquiringLicenseFromDrmHeader();

    /*

     * Makes asynchronous call to CWmDrmDlaHttpPluginFw to

     * acquire license from file

     */

    void AcquiringLicense();

    /*

     * Makes asynchronous call to CWmDrmDlaHttpPluginFw to

     * process metering certificate

     */

    void ProcessingMeteringCertificate();

private: // data

    enum TDlaHandlerState

        {

        EIdle,

        EAcquiringLicense,

        EAcquiringLicenseFromDrmHeader,

        EProcessingMeteringCertificate,

        ECompleted

        };

    TDlaHandlerState iState;

    CWmDrmDlaHttpLicAcqPluginFw* iLicenseAcquisitionFw;

    CWmDrmDlaHttpMeteringPluginFw* iMeteringFw;

    RPointerArray<CWmDrmDlaRequest> iRequests;

    CWmDrmDlaRequest* iCurrentRequest;

    CWmDrmDlaRequest* iSyncRequest;

    TInt iSyncReturnValue;

    CActiveSchedulerWait* iWait;

    };

#endif // C_WMDRMDLAHANDLERIMPL_H