/*

* Copyright (c) 2006 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 helper for svgt files.

*

*/

// INCLUDE FILES

#include    <DRMHelper.h>

#include    <bamdesca.h>

#include    <bautils.h>

#include    <coemain.h>

#include    <StringLoader.h>

#include    <aknnotewrappers.h>

#include    <caf/content.h>

#include    <caf/attribute.h>

#include    <caf/caftypes.h>

#include    <caf/caferr.h>

#include    <Oma2Agent.h>

#include    "SVGTDrmHelper.h"

// CONSTANTS

const TUint32 KSVGTCountConstraint = 3;

const TInt KSVGTTimeConstraint = 7;

const TInt KSVGTSecondsInDay = 86400;

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

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::CSVGTDrmHelper

// C++ default constructor can NOT contain any code, that

// might leave.

// -----------------------------------------------------------------------------

//

CSVGTDrmHelper::CSVGTDrmHelper() :      

    iEnv(CCoeEnv::Static())

    {

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::ConstructL

// Symbian 2nd phase constructor can leave.

// -----------------------------------------------------------------------------

//

void CSVGTDrmHelper::ConstructL()

    {

    iDrmHelper = CDRMHelper::NewL( *iEnv );

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::NewL

// Two-phased constructor.

// -----------------------------------------------------------------------------

//

CSVGTDrmHelper* CSVGTDrmHelper::NewL()

    {

    CSVGTDrmHelper* self = CSVGTDrmHelper::NewLC();    

    CleanupStack::Pop( self );

    return self;

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::NewLC

// Two-phased constructor.

// -----------------------------------------------------------------------------

//

CSVGTDrmHelper* CSVGTDrmHelper::NewLC()

    {

    CSVGTDrmHelper* self = new(ELeave) CSVGTDrmHelper();    

    CleanupStack::PushL(self);

    self->ConstructL();

    return self;

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::~CSVGTDrmHelper

// Destructor

// -----------------------------------------------------------------------------

//

CSVGTDrmHelper::~CSVGTDrmHelper()

    {

    delete iRightsConstraints;  

    // Delete the DRM Helper

    delete iDrmHelper;

    // Reset the environment pointer

    iEnv = NULL;

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::IsPreviewL

// -----------------------------------------------------------------------------

//        

TBool CSVGTDrmHelper::IsPreviewL( RFile& aFileHandle )    

    {

    LoadUsageRigthsInfoL( aFileHandle );        

    TSVGTRightsStatus rightsStatus;

    GetUsageRightsStatus( rightsStatus );         

    return ( rightsStatus == ESVGTPreview );  

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::CheckRightsAmountL

// -----------------------------------------------------------------------------

//     

TInt CSVGTDrmHelper::CheckRightsAmountL( RFile& aFileHandle )

    {

    LoadUsageRigthsInfoL( aFileHandle );

    if ( iProtected )

        {

        return iDrmHelper->CheckRightsAmountL( aFileHandle );   

        }

    else

        {

        return 0;

        }

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::GetDrmDetailsL

// -----------------------------------------------------------------------------

// 

void CSVGTDrmHelper::GetDrmDetailsL( RFile& aFileHandle,

                         TBool& aRightsValid, TBool& aIsSeparateDeliveryNS, 

                         TBool& aIsProtected )

    {

    LoadUsageRigthsInfoL( aFileHandle );     

    aIsProtected = IsProtected();    

    if( !aIsProtected )

        {       

        return;

        }             

    TSVGTRightsStatus rightsStatus;

    GetUsageRightsStatus( rightsStatus );       

    aRightsValid = ( rightsStatus == ESVGTFull ) ||

                   ( rightsStatus == ESVGTRestricted ) ||

                   ( rightsStatus == ESVGTPreview ); 

    // Creates a handle to content handled via CAF

    CContent *content = CContent::NewLC( aFileHandle ); 

    content->GetAttribute( EIsForwardable, aIsSeparateDeliveryNS );

    CleanupStack::PopAndDestroy( content );     

    return;   

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::LoadUsageRigthsInfoL

// -----------------------------------------------------------------------------

//

void CSVGTDrmHelper::LoadUsageRigthsInfoL( RFile& aFileHandle )

    {

    delete iRightsConstraints;

    iRightsConstraints = NULL;

    // Creates a handle to content handled via CAF

    CContent *content = CContent::NewLC( aFileHandle ); 

    content->GetAttribute( EIsProtected, iProtected );

    CleanupStack::PopAndDestroy( content );

    if ( iProtected )

        {

        CDRMHelperRightsConstraints* ignore1 = NULL;

        CDRMHelperRightsConstraints* ignore2 = NULL;

        CDRMHelperRightsConstraints* ignore3 = NULL;

        TRAPD(error, iDrmHelper->GetRightsDetailsL(aFileHandle,

                                                   ContentAccess::EView,

                                                   iExpired,

                                                   iSendingAllowed,

                                                   ignore1,

                                                   iRightsConstraints,

                                                   ignore2,

                                                   ignore3));  

        // Delete ignored constraints

        delete ignore1;

        ignore1 = NULL;

        delete ignore2;

        ignore2 = NULL;

        delete ignore3;

        ignore3 = NULL;

        if ( error == KErrCANoRights )

            {

            delete iRightsConstraints;

            iRightsConstraints = NULL;

            }

        else

            {

            User::LeaveIfError(error);

            }

        }

    else

        {

        iExpired = EFalse;

        iSendingAllowed = ETrue;

        }     

    iDrmHelper->CanSetAutomated(aFileHandle, iCanSetAutomated);

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::GetUsageRightsStatus

// -----------------------------------------------------------------------------

//

void CSVGTDrmHelper::GetUsageRightsStatus(TSVGTRightsStatus& aStatus)

    {

    if (!iProtected)

        {

        aStatus = ESVGTFull;

        }

    else if (iRightsConstraints)

        {

        if (iExpired)

            {

            aStatus = ESVGTExpired;

            }

        else if (iRightsConstraints->IsPreview())

            {

            aStatus = ESVGTPreview;

            }

        else if (iRightsConstraints->FullRights())

            {

            aStatus = ESVGTFull;

            }

        else

            {

            TTime time;

            TTime startTime;

            time.HomeTime();

            TInt error = GetStartTime(startTime);

            // Check that usage time has already started

            if (!error && time < startTime)

                {

                aStatus = ESVGTExpired;

                }

            else

                {

                aStatus = ESVGTRestricted;

                }

            }

        }

    else

        {

        aStatus = ESVGTMissing;

        }

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::GetExpireStatus

// -----------------------------------------------------------------------------

//

void CSVGTDrmHelper::GetExpireStatus(TBool& aAboutToExpire,

                                            TSVGTExpireConstraint& aConstraint,

                                            TInt& aCountLeft,

                                            TInt& aDaysLeft)

    {

    TSVGTRightsStatus status;

    GetUsageRightsStatus(status);

    if (status == ESVGTRestricted)

        {

        TUint32 count = 0;

        TInt countError = GetCount(count);

        TTime endTime;

        TInt timeError = GetEndTime(endTime);

        TTime currentTime;

        currentTime.HomeTime();

        TInt diff = endTime.DaysFrom(currentTime).Int();

        TTimeIntervalSeconds interval;

        TInt intervalError = GetInterval(interval);

        TInt intervalDiff = 0;

        if (!intervalError)

            {

            TTime intervalStart;

            TTimeIntervalSeconds secondsFromStart;

            if (!GetIntervalStart(intervalStart))

                {

                // No error => interval has already started

                currentTime.SecondsFrom(intervalStart, secondsFromStart);

                intervalDiff = 

                    (interval.Int() - secondsFromStart.Int()) / KSVGTSecondsInDay;

                }

            else

                {

                // Error occurred => interval not started yet

                intervalDiff = interval.Int() / KSVGTSecondsInDay;

                }

            }

        if (!countError && count <= KSVGTCountConstraint &&

            ((!timeError && diff <= KSVGTTimeConstraint) ||

            (!intervalError && intervalDiff <= KSVGTTimeConstraint)))

            {

            // Count and time or interval contraints about to expire

            aConstraint = ESVGTCountAndTime;

            aCountLeft = count;

            aAboutToExpire = ETrue;

            if (!timeError && !intervalError)

                {

                // Both constraints exist => use smaller one

                aDaysLeft = Min(diff, intervalDiff);

                }

            else if (!timeError)

                {

                // Only time constraint exists => use it

                aDaysLeft = diff;

                }

            else

                {

                // Only interval constraint exists => use it

                aDaysLeft = intervalDiff;

                }

            }

        else if (!countError && count <= KSVGTCountConstraint)

            {

            // Count constraint about to expire

            aConstraint = ESVGTCount;

            aCountLeft = count;

            aAboutToExpire = ETrue;

            }

        else if ((!timeError && diff <= KSVGTTimeConstraint) ||

                 (!intervalError && intervalDiff <= KSVGTTimeConstraint))

            {

            // Time or interval constraint about to expire

            aConstraint = ESVGTTime;

            aAboutToExpire = ETrue;

            if (!timeError && !intervalError)

                {

                // Both constraints exist => use smaller one

                aDaysLeft = Min(diff, intervalDiff);

                }

            else if (!timeError)

                {

                // Only time constraint exists => use it

                aDaysLeft = diff;

                }

            else

                {

                // Only Interval constraint exists => use it

                aDaysLeft = intervalDiff;

                }

            }

        else

            {

            // No constraint about to expire

            aAboutToExpire = EFalse;

            aConstraint = ESVGTNone;

            }

        }

    else

        {

        // Non-restricted object cannot expire

        aAboutToExpire = EFalse;

        }

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::SendingAllowed

// -----------------------------------------------------------------------------

//

TBool CSVGTDrmHelper::SendingAllowed() const

    {

    return iSendingAllowed;

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::GetCount

// -----------------------------------------------------------------------------

//

TInt CSVGTDrmHelper::GetCount(TUint32& aCount)

    {

    TInt error = KErrNone;

    if (!iProtected)

        {

        error = KErrNotFound;

        }

    else if (iRightsConstraints)

        {

        TUint32 ignore;

        TRAP(error, iRightsConstraints->GetCountersL(aCount, ignore));

        }

    else

        {

        error = KErrNotReady;

        }

    return error;

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::GetStartTime

// -----------------------------------------------------------------------------

//

TInt CSVGTDrmHelper::GetStartTime(TTime& aStartTime)

    {

    TInt error = KErrNone;

    if (!iProtected)

        {

        error = KErrNotFound;

        }

    else if (iRightsConstraints)

        {

        TRAP(error, iRightsConstraints->GetStartTimeL(aStartTime));

        }

    else

        {

        error = KErrNotReady;

        }

    return error;

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::GetEndTime

// -----------------------------------------------------------------------------

//

TInt CSVGTDrmHelper::GetEndTime(TTime& aEndTime)

    {

    TInt error = KErrNone;

    if (!iProtected)

        {

        error = KErrNotFound;

        }

    else if (iRightsConstraints)

        {

        TRAP(error, iRightsConstraints->GetEndTimeL(aEndTime));

        }

    else

        {

        error = KErrNotReady;

        }

    return error;

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::GetInterval

// -----------------------------------------------------------------------------

//

TInt CSVGTDrmHelper::GetInterval(TTimeIntervalSeconds& aInterval)

    {

    TInt error = KErrNone;

    if (!iProtected)

        {

        error = KErrNotFound;

        }

    else if (iRightsConstraints)

        {

        TRAP(error, iRightsConstraints->GetIntervalL(aInterval));

        }

    else

        {

        error = KErrNotReady;

        }

    return error;

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::GetIntervalStart

// -----------------------------------------------------------------------------

//

TInt CSVGTDrmHelper::GetIntervalStart(TTime& aStartTime)

    {

    TInt error = KErrNone;

    if (!iProtected)

        {

        error = KErrNotFound;

        }

    else if (iRightsConstraints)

        {

        TRAP(error, iRightsConstraints->GetIntervalStartL(aStartTime));

        }

    else

        {

        error = KErrNotReady;

        }

    return error;

    }

// -----------------------------------------------------------------------------

// CSVGTDrmHelper::IsProtected

// -----------------------------------------------------------------------------

//

TBool CSVGTDrmHelper::IsProtected() const