/*

 * Copyright (c) 2008-2009 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:    DRM utility implementation

 *

 */

// INCLUDES

#include "glxdrmutility.h"

#include <glxpanic.h>

#include <DRMHelper.h>

#include <DRMCommon.h>

#include <caf/caf.h>

#include <caf/content.h>

#include <caf/data.h>

#include <caf/manager.h>

#include "glxtracer.h"

#include "glxlog.h"

const TInt KGlxDRMThumbnailHeight = 120;

const TInt KGlxDRMThumbnailWidth = 90;

// ======== MEMBER FUNCTIONS ========

/**

 * CGlxDrmTls

 *

 * Global object stored in TLS. 

 * Owns the only instance of a CGlxDRMUtility

 */

struct CGlxDrmTls

    {

    CGlxDrmTls(CGlxDRMUtility* aUtility)

        {

        iDrmUtility = aUtility;

        iRefCount = 0;

        }

    CGlxDRMUtility* iDrmUtility;

    TInt iRefCount;

    };

//============================================================================

// InstanceL

//============================================================================

EXPORT_C CGlxDRMUtility* CGlxDRMUtility::InstanceL()

    {

    TRACER("CGlxDRMUtility::InstanceL()");

    CGlxDrmTls* tls = reinterpret_cast<CGlxDrmTls*> (Dll::Tls());

    if (!tls)

        {

        CGlxDRMUtility* drmutil = new (ELeave) CGlxDRMUtility();

        CleanupStack::PushL(drmutil);

        drmutil->ConstructL();

        tls = new (ELeave) CGlxDrmTls(drmutil);

        CleanupStack::Pop(drmutil);

        Dll::SetTls(reinterpret_cast<TAny*> (tls));

        }

    tls->iRefCount++;

    return tls->iDrmUtility;

    }

//============================================================================

// Close

//============================================================================ 

EXPORT_C void CGlxDRMUtility::Close()

    {

    TRACER("CGlxDRMUtility::Close()");

    CGlxDrmTls* tls = reinterpret_cast<CGlxDrmTls*> (Dll::Tls());

    if (tls)

        {

        tls->iRefCount--;

        // Delete the tls pointer and list manager instance if this was the 

        // last reference

        if (tls->iRefCount == 0)

            {

            delete tls->iDrmUtility;

            delete tls;

            Dll::SetTls(NULL);

            }

        }

    }

//============================================================================

// Destructor

//============================================================================ 

CGlxDRMUtility::~CGlxDRMUtility()

    {

    TRACER("CGlxDRMUtility::~CGlxDRMUtility()");

    delete iCManager;

    delete iDrmHelper;

    delete iLastConsumedItemUri;

    }

//============================================================================

// ItemRightsValidityCheckL

// for checking DRM rights validity for item.

// is called before right is consumed and for all items (focused or unfocused).

//============================================================================

EXPORT_C TBool CGlxDRMUtility::ItemRightsValidityCheckL(const TDesC& aUri,

        TBool aCheckViewRights)

    {

    TRACER("CGlxDRMUtility::ItemRightsValidityCheckL(URI)");

#ifdef _DEBUG

    TTime startTime;

    startTime.HomeTime();

#endif         

    // When checking current rights for a URI

    //Allow to Open if rights for a URI was just consumed (i.e. same as stored URI)

    if (iLastConsumedItemUri->Length() > 0)

        {

        if (aUri.CompareF(*iLastConsumedItemUri) == 0)

            {

            return ETrue;

            }

        }

    //Else for uri of non-focused uri, just check validity rights

    TBool rightsValid = EFalse;

    TVirtualPathPtr path(aUri, KDefaultContentObject());

    ContentAccess::TAttribute attr =

        aCheckViewRights ? ContentAccess::ECanView : ContentAccess::ECanPlay;

    // rightsValid is not updated if an error occurs

    iCManager->GetAttribute(attr, rightsValid, path);

#ifdef _DEBUG

    TTime stopTime;

    stopTime.HomeTime();

    GLX_DEBUG2("CGlxDRMUtility::ItemRightsValidityCheckL(URI) took <%d> us",

            (TInt) stopTime.MicroSecondsFrom(startTime).Int64());

#endif  

    return rightsValid;

    }

//============================================================================

// ItemRightsValidityCheckL

// for checking DRM rights validity for item.

// is called before right is consumed and for all items (focused or unfocused).

//============================================================================

EXPORT_C TBool CGlxDRMUtility::ItemRightsValidityCheckL(RFile& aFileHandle,

        TBool aCheckViewRights)

    {

    TRACER("CGlxDRMUtility::ItemRightsValidityCheckL(RFile)");

#ifdef _DEBUG

    TTime startTime;

    startTime.HomeTime();

#endif         

    TBool rightsValid = EFalse;

    ContentAccess::TAttribute attrib =

        aCheckViewRights ? ContentAccess::ECanView : ContentAccess::ECanPlay;

    ContentAccess::CContent* content = ContentAccess::CContent::NewLC(

            aFileHandle);

    TInt err(content->GetAttribute(attrib, rightsValid));

    CleanupStack::PopAndDestroy(content);

#ifdef _DEBUG

    TTime stopTime;

    stopTime.HomeTime();

    GLX_DEBUG2("CGlxDRMUtility::ItemRightsValidityCheckL(RFile) took <%d> us",

            (TInt) stopTime.MicroSecondsFrom(startTime).Int64());

#endif    

    return rightsValid;

    }

//============================================================================

// DisplayItemRightsCheckL

// is called after right is consumed and for only focused/displayed item.

//============================================================================

EXPORT_C TBool CGlxDRMUtility::DisplayItemRightsCheckL(const TDesC& aUri,

        TBool aCheckViewRights)

    {

    TRACER("CGlxDRMUtility::DisplayItemRightsCheckL(URI)");

    // Allow to display if rights for a URI was just consumed (i.e. same as stored URI)

    if (iLastConsumedItemUri->Length() > 0)

        {

        if (aUri.CompareF(*iLastConsumedItemUri) == 0)

            {

            return ETrue;

            }

        }

    //Clear the stored uri since focus has changed

    ClearLastConsumedItemUriL();

    // Otherwise, check current rights for the URI of newly focused item

    return ItemRightsValidityCheckL(aUri, aCheckViewRights);

    }

//============================================================================

// DisplayItemRightsCheckL

// is called after right is consumed and for only focused/displayed item.

//============================================================================

EXPORT_C TBool CGlxDRMUtility::DisplayItemRightsCheckL(RFile& aFileHandle,

        TBool aCheckViewRights)

    {

    TRACER("CGlxDRMUtility::DisplayItemRightsCheckL(RFile)");

    // Otherwise, check current rights for the URI of newly focused item

    return ItemRightsValidityCheckL(aFileHandle, aCheckViewRights);

    }

//============================================================================

// ConsumeRightsL

//============================================================================    

EXPORT_C TBool CGlxDRMUtility::ConsumeRightsL(const TDesC& aUri)

    {

    TRACER("CGlxDRMUtility::ConsumeRightsL(URI)");

    TVirtualPathPtr path(aUri, KDefaultContentObject());

    // Create a CData object to read the content

    // Tell the agent we are planning to display the content

    CData* data = CData::NewLC(path, ContentAccess::EView,

            EContentShareReadOnly);

    //When consuming rights for a URI, clear stored URI

    ClearLastConsumedItemUriL();

    // Execute the intent, tell the agent that we plan to display the content

    // It is at this point that any stateful rights will be decremented

    TInt err = data->ExecuteIntent(ContentAccess::EView);

    if (err == KErrNone)

        {

        //Update stored URI

        iLastConsumedItemUri = iLastConsumedItemUri->ReAllocL(aUri.Length());

        TPtr newPtr = iLastConsumedItemUri->Des();

        newPtr.Copy(aUri);

        }

    CleanupStack::PopAndDestroy(data);

    return (err == KErrNone);

    }

//============================================================================

// ConsumeRightsL

//============================================================================    

EXPORT_C TBool CGlxDRMUtility::ConsumeRightsL(RFile& aFileHandle)

    {

    TRACER("CGlxDRMUtility::ConsumeRightsL(RFile)");

    CData* data = CData::NewLC(aFileHandle, KDefaultContentObject(), EPeek);

    TInt err = data->ExecuteIntent(ContentAccess::EView);

    CleanupStack::PopAndDestroy(data);

    return (err == KErrNone);

    }

//============================================================================

//Clears Last Consumed Uri

//============================================================================

EXPORT_C void CGlxDRMUtility::ClearLastConsumedItemUriL()

    {

    TRACER("CGlxDRMUtility::ClearLastConsumedItemUriL()");

    //clears the stored uri

    TPtr ptr = iLastConsumedItemUri->Des();

    ptr.Zero();

    iLastConsumedItemUri = iLastConsumedItemUri->ReAllocL(0);

    }

//============================================================================

// Test whether a media item is OMA DRM 2.0 protected and has an associated

// info URL.

//============================================================================

EXPORT_C TBool CGlxDRMUtility::CanShowInfoOnlineL(const TDesC& aUri)

    {

    TRACER("CGlxDRMUtility::CanShowInfoOnlineL()");

    TBool canShowInfoOnline = EFalse;

    HBufC8* urlBuf = NULL;

    canShowInfoOnline = iDrmHelper->HasInfoUrlL(const_cast<TDesC&> (aUri),

            urlBuf);

    // discard buf we don't need it

    delete urlBuf;

    return canShowInfoOnline;

    }

//============================================================================

// Open the associated info URL for a media item in the browser.

//============================================================================

EXPORT_C void CGlxDRMUtility::ShowInfoOnlineL(const TDesC& aUri)

    {

    TRACER("CGlxDRMUtility::ShowInfoOnlineL()");

    iDrmHelper->OpenInfoUrlL(const_cast<TDesC&> (aUri));

    }

//============================================================================

// Test whether a media item can be set as automated content.

//============================================================================

EXPORT_C TBool CGlxDRMUtility::CanSetAsAutomatedL(const TDesC& aUri,

        TGlxDrmAutomatedType aType)

    {

    TRACER("CGlxDRMUtility::CanSetAsAutomatedL()");

    TBool canSetAutomated = EFalse;

    switch (aType)

        {

        case EGlxDrmAutomatedTypeWallpaper:

            {

            User::LeaveIfError(iDrmHelper->SetAutomatedType(

                    CDRMHelper::EAutomatedTypeWallpaper));

            User::LeaveIfError(iDrmHelper->CanSetAutomated(aUri,

                    canSetAutomated));

            break;

            }

        default:

            break;

        };

    return canSetAutomated;

    }

//============================================================================

// SetAsAutomatedL

//============================================================================

EXPORT_C void CGlxDRMUtility::SetAsAutomatedL(const TDesC& aUri,

        TGlxDrmAutomatedType aType)

    {

    TRACER("CGlxDRMUtility::SetAsAutomatedL()");

    switch (aType)

        {

        case EGlxDrmAutomatedTypeWallpaper:

            {

            TInt error = iDrmHelper->SetAutomatedType(

                    CDRMHelper::EAutomatedTypeWallpaper);

            if (KErrNone == error)

                {

                error = iDrmHelper->SetAutomatedPassive(aUri);

                if (KErrNone != error)

                    {

                    iDrmHelper->HandleErrorL(error, aUri);

                    }

                }

            break;

            }

        default:

            break;

        };

    }

//============================================================================

// ShowDRMDetailsPane

//============================================================================  

EXPORT_C void CGlxDRMUtility::ShowDRMDetailsPaneL(const TDesC& aUri)

    {

    TRACER("CGlxDRMUtility::ShowDRMDetailsPaneL(URI)");

    }

//============================================================================

// ShowDRMDetailsPane

//============================================================================  

EXPORT_C void CGlxDRMUtility::ShowDRMDetailsPaneL(RFile& aFileHandle)

    {

    TRACER("CGlxDRMUtility::ShowDRMDetailsPaneL(RFile)");

    }

//============================================================================

// IsForwardLockedL

//============================================================================  

EXPORT_C TBool CGlxDRMUtility::IsForwardLockedL(const TDesC& aUri)

    {

    TRACER("CGlxDRMUtility::IsForwardLockedL()");

    TBool forwardLocked = EFalse;

    TVirtualPathPtr path(aUri, KDefaultContentObject());

    // forwardLocked is not updated if an error occurs

    iCManager->GetAttribute(ContentAccess::EIsForwardable, forwardLocked,

            path);

    return forwardLocked;

    }

//============================================================================

// ShowRightsInfoL

//============================================================================    

EXPORT_C void CGlxDRMUtility::ShowRightsInfoL(const TDesC& aUri)

    {

    TRACER("CGlxDRMUtility::ShowRightsInfoL(URI)");

    iDrmHelper->CheckRightsAmountL(aUri);

    }

//============================================================================

// ShowRightsInfoL

//============================================================================    

EXPORT_C void CGlxDRMUtility::ShowRightsInfoL(RFile& aFileHandle)

    {

    TRACER("CGlxDRMUtility::ShowRightsInfoL(RFile)");

    iDrmHelper->CheckRightsAmountL(aFileHandle);

    }

//============================================================================

// Return size for DRM thumbnail request.

//============================================================================

EXPORT_C TSize CGlxDRMUtility::DRMThumbnailSize(TSize& aSize)

    {

    TRACER("CGlxDRMUtility::DRMThumbnailSize()");

    TSize thumbnailSize(KGlxDRMThumbnailWidth, KGlxDRMThumbnailHeight);

    if ((aSize.iWidth * aSize.iHeight) / 4 < KGlxDRMThumbnailWidth

            * KGlxDRMThumbnailHeight)

        {

        thumbnailSize.iWidth = aSize.iWidth / 2;

        thumbnailSize.iHeight = aSize.iHeight / 2;

        }

    return thumbnailSize;

    }

/**

 * C++ default constructor.

 */

CGlxDRMUtility::CGlxDRMUtility()

    {

    TRACER("CGlxDRMUtility::CGlxDRMUtility()");

    }

/**

 * By default Symbian 2nd phase constructor is private.

 */

void CGlxDRMUtility::ConstructL()

    {

    TRACER("CGlxDRMUtility::ConstructL()");

    iCManager = ContentAccess::CManager::NewL();

    iDrmHelper = CDRMHelper::NewL();

    iLastConsumedItemUri = HBufC::NewL(0);

    }

// End of File