/*

* Copyright (c) 2002-2004 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 helper interface to be used by S60 applications for

*                setting ringing and alert tones for different profiles.

*                Registers DRM protected tones as automated content

*                and removes old content from automated content list.

*                Shows a content activation query if necessary.

*

*/

// INCLUDE FILES

#include    "cprofiletonehandler.h"

#include    <DRMHelper.h>

#include    <DRMCommon.h>

#include    <profilesettingsview.rsg>

#ifdef RD_DRM_COMMON_INTERFACE_FOR_OMA_AND_WMDRM

#include	<drmutility.h>

#include	<drmagents.h>

#endif

#include <caf/caf.h>

// ============================ LOCAL FUNCTIONS ================================

CDRMHelper::TDRMHelperAutomatedType ToneSettingToAutomatedType(

        TProfileTones aToneSetting )

    {

    switch( aToneSetting )

        {

        case EProfileRingingToneSetting:

            {

            return CDRMHelper::EAutomatedTypeRingingTone;

            }

        case EProfileMessageAlertToneSetting:

            {

            return CDRMHelper::EAutomatedTypeMessageAlert;

            }

        case EProfileEmailAlertToneSetting:

            {

            return CDRMHelper::EAutomatedTypeEmailAlert;

            }

        case EProfileInstantMessageAlertToneSetting:

            {

            return CDRMHelper::EAutomatedTypeIMAlert;

            }

        default:

            {

            return CDRMHelper::EAutomatedTypeOther;

            }

        }

    }

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

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

// CProfileToneHandler::DrmConstructL

// 2nd phase construct for DRM objects

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

//

void CProfileToneHandler::DrmConstructL()

    {

    iDrmCommon = DRMCommon::NewL();

    iDrmHelper = CDRMHelper::NewL();

    }

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

// CProfileToneHandler::ReleaseDrm

// Destructor for DRM objects

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

//

void CProfileToneHandler::ReleaseDrm()

    {

    delete iDrmHelper;

    iDrmHelper = NULL;

    delete iDrmCommon;

    iDrmCommon = NULL;

    }

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

// CProfileToneHandler::CheckProtectedFileL

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

//

TInt CProfileToneHandler::CheckProtectedFileL( const TDesC& aFileName )

    {

    DRMCommon::TContentProtection protection;

    HBufC8* mimeType = NULL; // ignored

    HBufC8* contentUri = NULL;

    TUint dataLength; // ignored

    TInt err = iDrmCommon->GetFileInfo( aFileName, protection, mimeType,

                                        contentUri, dataLength );

    delete mimeType;

    if( err )

        {

        delete contentUri;

        User::Leave( err );

        }

    CleanupStack::PushL( contentUri );

    TInt result( KErrGeneral );

    CDRMRights* rights = NULL;

    err = iDrmCommon->GetActiveRights( *contentUri, DRMCommon::EPlay, rights );

    CleanupStack::PopAndDestroy( contentUri );

    if( rights == NULL )

        {

        if( err == DRMCommon::ENoRights )

            {

            // Handle "No rights" situation here

            iDrmHelper->HandleErrorL( DRMCommon::ENoRights, aFileName );

            return result;

            }

        else

            {

            User::Leave( KErrGeneral );

            }

        }

    CleanupStack::PushL( rights );

    switch ( err )

		{

		case CDRMRights::EFullRights: // Fall through

		case CDRMRights::ERestrictedRights:

			{

			CDRMRights::TRestriction restriction; // ignore

			CDRMRights::TExpiration expiration;

			TUint32 constType;

			rights->GetRightsInfo( DRMCommon::EPlay, restriction, // ignore return

								expiration, constType );       // value

			// This is CFM protected file, ringingtone is set to "no"

			if ( ( rights->GetPermission().iInfoBits & ENoRingingTone )

				// This is normal DRM protected count-based tone

				|| ( constType & CDRMRights::ECountBased ) )

				{

				ShowErrorNoteL( R_PROFILE_TEXT_DRM_PREV_RIGHTS_SET );

				}		

			else

				{

				switch ( expiration )

					{

					case CDRMRights::EValidRights:

						{

						result = KErrNone;

						break;

						}

					case CDRMRights::EFutureRights:

						{

						iDrmHelper->HandleErrorL( DRMCommon::ENoRights, aFileName );

						break;

						}

					case CDRMRights::EExpiredRights: 

						{

						iDrmHelper->HandleErrorL( DRMCommon::ERightsExpired, aFileName );

						break;

						}

					default:

						{

						break;

						}

					}	

				}

			break;

			}

		case CDRMRights::EPreviewRights:

			{

			ShowErrorNoteL( R_PROFILE_TEXT_DRM_PREV_RIGHTS_SET );

			break;

			}

		case DRMCommon::ENoRights:

			{

			iDrmHelper->HandleErrorL( DRMCommon::ENoRights, aFileName );

			break;

			}

		default:

			{

			break;

			}

		}

    CleanupStack::PopAndDestroy( rights );

    return result;

    }

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

// CProfileToneHandler::CanSetAutomated

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

//

TBool CProfileToneHandler::CanSetAutomated( const TDesC& aFileName )

    {

    TBool canSetAutomated( EFalse );

    return

        iDrmHelper->CanSetAutomated( aFileName, canSetAutomated ) == KErrNone &&

        canSetAutomated;

    }

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

// CProfileToneHandler::AskAutomated

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

//

TInt CProfileToneHandler::AskAutomated( const TDesC& aFileName )

    {

    return iDrmHelper->ShowAutomatedNote( aFileName );

    }

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

// CProfileToneHandler::SetAutomated

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

//

TInt CProfileToneHandler::SetAutomated( TProfileTones aToneSetting,

                                        const TDesC& aFileName )

    {

    TInt err = KErrNone;

    TRAP_IGNORE( err = SetAutomatedL( aToneSetting, aFileName ) );

    return err;

    }

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

// CProfileToneHandler::SetAutomatedL

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

//

TInt CProfileToneHandler::SetAutomatedL( TProfileTones aToneSetting,

                                        const TDesC& aFileName )

    {

    iDrmHelper->SetAutomatedType( ToneSettingToAutomatedType( aToneSetting ) );

    TInt err( iDrmHelper->SetAutomatedSilent( aFileName, EFalse ) );

    if( err == KErrNone )

        {

        using namespace ContentAccess;

       	TVirtualPathPtr path( aFileName, KDefaultContentObject );

        CData* data = CData::NewLC( path, EContentShareReadWrite );

        err = data->ExecuteIntent( EPlay );

        CleanupStack::PopAndDestroy( data );

        // According to Risto Vilkman from DRM, KErrAccessDenied

        // can be ignored at this point, since if

        // CanSetAutomated says the tone is OK, it's OK.

        if( err == KErrAccessDenied )

        	{

        	err = KErrNone;

        	}

        }

    return err;

    }

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

// CProfileToneHandler::RemoveAutomated

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

//

void CProfileToneHandler::RemoveAutomated( const TDesC& aFileName )

    {

    iDrmHelper->RemoveAutomatedPassive( aFileName ); // ignore return value

    }

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

// CProfileToneHandler::IsProtected

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

//

TBool CProfileToneHandler::IsProtected( const TDesC& aFileName ) const

    {

    TBool result = EFalse;

    TRAP_IGNORE( result = IsProtectedL( aFileName ) );

    return result;

    }

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

// CProfileToneHandler::IsProtectedL

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

//

TBool CProfileToneHandler::IsProtectedL( const TDesC& aFileName ) const

    {

    TInt isProtected( EFalse );

   	ContentAccess::TVirtualPathPtr path( aFileName,

   						ContentAccess::KDefaultContentObject );

   	CData* data = CData::NewLC( path, EContentShareReadWrite );

   	TInt result = data->GetAttribute( EIsProtected, isProtected );

   	CleanupStack::PopAndDestroy(); // data

    return( ( result == DRMCommon::EOk ) && isProtected );

    }

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

//

// Functions related to WMDRM protection check

//

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

#ifndef RD_DRM_COMMON_INTERFACE_FOR_OMA_AND_WMDRM

// Some magic constants

static const TInt KMinContentLength( 16 );

//_LIT8( KContentProtectionType, "DRM" );

_LIT8( KASFHeaderObject, "75B22630668E11CFA6D900AA0062CE6C" );

_LIT8( KWrmHeader, "W\0R\0M\0H\0E\0A\0D\0E\0R\0" );

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

// FormatGUID

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

//

LOCAL_C void FormatGUID( TDes8 &aGUID )

    {

    TBuf8<16> copyGUID( aGUID );

    TInt i;

    for( i = 0; i < 4; i++ )

        {

        copyGUID[i] = aGUID[3-i];

        }

    for( i = 4; i < 6; i++ )

        {

        copyGUID[i] = aGUID[9 - i];

        }

    for( i = 6; i < 8; i++ )

        {

        copyGUID[i] = aGUID[13 - i];

        }

    for( i = 8; i < 16 ; i++ )

        {

        copyGUID[i] = aGUID[i];

        }

    aGUID.Delete( 0, 32 );

    for( i = 0; i <16; i++ )

        {

        aGUID.AppendNumFixedWidthUC( copyGUID[i], EHex, 2 );

        }

    }

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

// ConvertToInt64

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

//

LOCAL_C TInt64 ConvertToInt64( TDesC8& aDes )

    {

    TInt64 num = 0;

    TInt i;

    for( i = 7 ; i >= 0; i-- )

        {

        num <<= 8;

        num |= aDes[i];

        }

    return num;

    }

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

// IsProtectedWmDrmL

// returns ETrue, if file is protected WMDRM file

//         EFalse if file is not protected WMDRM file

// Leaves with KErrUnderflow if file has too little data to decide

//         whether WmDrm or not

//         may also leave with other system wide error code

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

//

LOCAL_C TBool IsProtectedWmDrmL( RFile& aFileHandle )

    {

    TInt r( KErrNone );

    HBufC8* buffer( NULL );

    TInt pos( 0 );

    RFile file;

    TBuf8< 32 > header;

    TInt64 headerSize( 0 );

    TBool isProtectedWmDrm( EFalse );

    TPtr8 headerPtr( NULL, 0 );

    // Leave if given handle is invalid

    if( !aFileHandle.SubSessionHandle() )

        {

        User::Leave( KErrBadHandle );

        }

    User::LeaveIfError( file.Duplicate( aFileHandle ) );

    CleanupClosePushL( file );

    User::LeaveIfError( file.Seek( ESeekStart, pos ) );

    // Check if the file is an ASF file

    // Check on runtime wether WM DRM is supporeted or not

    User::LeaveIfError( file.Read( 0, header, KMinContentLength ) );

    if( header.Length() < KMinContentLength )

        {

        User::Leave( KErrUnderflow );

        }

    FormatGUID( header );

    if( header == KASFHeaderObject )

        {

        // It's ASF, check still whether it's WM DRM protected or not

        file.Read( header,8 );

        headerSize = ConvertToInt64( header );

        if( headerSize <= 30 )

            {

            User::Leave( KErrUnderflow );

            }

        if ( headerSize > ( ( KMaxTInt32 / 2 ) - 1 ) )

            {

            User::Leave( KErrOverflow );

            }

        buffer = HBufC8::NewLC( headerSize );

        headerPtr.Set( buffer->Des() );

        User::LeaveIfError( file.Read( headerPtr, headerSize - 24 ) );

        r = headerPtr.Find( KWrmHeader );

        if ( KErrNotFound != r )

            {

            isProtectedWmDrm = ETrue;

            }

        CleanupStack::PopAndDestroy( buffer ); // buffer

        }

        CleanupStack::PopAndDestroy(); // file

    return isProtectedWmDrm;

    }

#endif // RD_DRM_COMMON_INTERFACE_FOR_OMA_AND_WMDRM

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

//

// CProfileToneHandler::IsFileWMDRMProtectedL

//

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

//

TBool CProfileToneHandler::IsFileWMDRMProtectedL( const TDesC& aFileName )

	{

	TBool res = EFalse;

	RFile hFile;

	TInt err = hFile.Open( iFs, aFileName, 

						EFileRead | EFileStream | EFileShareReadersOnly );

	if( err == KErrInUse )

		{

		err = hFile.Open( iFs, aFileName, 

						EFileRead | EFileStream | EFileShareAny );

		}

	if( err != KErrNone )

		{

		User::Leave( err );

		}

	CleanupClosePushL( hFile );

#ifdef RD_DRM_COMMON_INTERFACE_FOR_OMA_AND_WMDRM

	TPtrC agent( KNullDesC );

	DRM::CDrmUtility* drmUtil( DRM::CDrmUtility::NewLC() );

	drmUtil->GetAgentL( hFile, agent );

	if( agent.Compare( DRM::KDrmWMAgentName ) == 0 )

		{

		res = ETrue;

		}

	CleanupStack::PopAndDestroy( drmUtil );

#else

	res = IsProtectedWmDrmL( hFile );

#endif

	CleanupStack::PopAndDestroy( &hFile );

	return res;

	}

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

//

// End of Functions related to WMDRM protection check

//

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

//  End of File