/*

* Copyright (c) 2003-2009 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:  Implementation of the DRM Clock

*

*/

// INCLUDE FILES

#include <mmtsy_names.h>

#include "DRMClock.h"

#include "DRMLog.h"

#include "DRMEventTimeChange.h"

#include "wmdrmfileserverclient.h"

#include <DRMNotifier.h>

#include <s32strm.h>

#include <s32file.h>

#include <e32property.h>

#include <e32keys.h>

#ifdef RD_MULTIPLE_DRIVE

#include <DriveInfo.h>

#endif

#include "DRMNitzObserver.h"

// EXTERNAL DATA STRUCTURES

// EXTERNAL FUNCTION PROTOTYPES  

// CONSTANTS

const TInt KMinuteInMicroseconds = 60000000;

const TInt KTimeZoneIncrement = 15;

// The time zones sanity check values, not sure if -13 hours exists

// But atleast +13 does in: Nuku'Alofa

const TInt KTimeZoneLow = -52; // -13 hours

const TInt KTimeZoneHigh = 55; // +13 hours 45 minutes Some NZ owned island

// MACROS

// LOCAL CONSTANTS AND MACROS

// MODULE DATA STRUCTURES

// LOCAL FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

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

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

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

// CDRMRightsDB::CDRMRightsDB

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

// might leave.

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

//    

CDRMClock::CDRMClock()

    {      

    };

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

// CDRMRightsDB::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CDRMClock::ConstructL()

    {

    DRMLOG( _L( "DRM Clock Starting: " ) );

    // Create a notifier instance

    iNotifier = CDRMNotifier::NewL();

#ifndef __WINS__

    ConnectToPhoneL();            

    iObserver = CDRMNitzObserver::NewL( iPhone, const_cast<CDRMClock*>(this));

    iObserver->Start();

#endif

    DRMLOG( _L( "DRM Clock started" ) );		    

    };

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

// CDRMClock::NewLC

// Two-phased constructor

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

//

CDRMClock* CDRMClock::NewLC()

    {

    DRMLOG( _L( "CDRMClock::NewLC" ) );

    CDRMClock* self = new(ELeave) CDRMClock;

    CleanupStack::PushL( self );

    self->ConstructL();

    DRMLOG( _L( "CDRMClock::NewLC ok" ) );

    return self;

    };

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

// CDRMClock::NewL

// Two-phased constructor

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

//

CDRMClock* CDRMClock::NewL()

    {

    DRMLOG( _L( "CDRMClock::NewL" ) );

    CDRMClock* self = NewLC();

    CleanupStack::Pop();

    DRMLOG( _L( "CDRMClock::NewL ok" ) );

    return self;

    };

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

// CDRMClock::~CDRMClock

// Destructor

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

//

CDRMClock::~CDRMClock()

    { 

    DRMLOG( _L( "CDRMClock::~CDRMClock" ) );

    if( iNotifier )

        {

        delete iNotifier;

        iNotifier = 0;

        }

#ifndef __WINS__

    if(iObserver)            

        {

        iObserver->Cancel();

        delete iObserver;

        iObserver = 0;

        }  

#endif // __WINS__        

    };

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

// CDRMClock::GetSecureTime

// returns time and security level

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

//

void CDRMClock::GetSecureTime(TTime& aTime, TInt& aTimeZone, 

                              DRMClock::ESecurityLevel& aSecurityLevel)

    {

    DRMLOG( _L( "CDRMClock::GetSecureTime" ) );

    TTime currentUniversal;

    TTime currentHome;

    TInt error = KErrNone;

    // if there is an error it's not initialized

    error = aTime.UniversalTimeSecure();

    if( error == KErrNoSecureTime )

        {

        currentHome.HomeTime();               

        currentUniversal.UniversalTime();         

        aTimeZone = ( currentHome.Int64() - currentUniversal.Int64() ) / 

                   ( KMinuteInMicroseconds* KTimeZoneIncrement );

        aTime.UniversalTime();

        aSecurityLevel = DRMClock::KInsecure;

        DRMLOG( _L( "CDRMClock::GetSecureTime: DRMClock is Insecure" ) );        

        }

    else 

        {

        currentHome.HomeTimeSecure();        

        currentUniversal.UniversalTimeSecure();

        aTimeZone = ( currentHome.Int64() - currentUniversal.Int64() ) / 

                   ( KMinuteInMicroseconds* KTimeZoneIncrement );

        aSecurityLevel = DRMClock::KSecure;     

        DRMLOG( _L( "CDRMClock::GetSecureTime: DRMClock is Secure" ) );  

        }    

    DRMLOG( _L( "CDRMClock::GetSecureTime ok" ) );

    };

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

// CDRMClock::ResetSecureTimeL

// resets the secure time and recalculates the offsets

// should not reset to 0

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

//

// Do not reset the timezone, use whatever has been set or retrieved from the UI time

// However check that the timezone is a valid one just in case

void CDRMClock::ResetSecureTimeL( const TTime& aTime, const TInt& aTimeZone )

    {

    DRMLOG( _L( "CDRMClock::ResetSecureTimeL" ) );

    TRequestStatus status;  

    TInt error = KErrNone;  

    CDRMEventTimeChange* change = CDRMEventTimeChange::NewLC();

	TTime previousTime;

	TTime previousTimeLocal;

	TTime newTime;

	TInt timezone = 0;

	TDateTime temppi; // Only for logging

    // check for param that the time is even reasonably valid:

    if( aTime.Int64() == 0 )

        {

        DRMLOG( _L("Trying to reset to zero time") );             

    	User::Leave( KErrArgument );

        }

    // Sanity check: Time zone has to be +/- certail hours

    // for this check -13h to +13.75h

    if( aTimeZone < KTimeZoneLow || aTimeZone > KTimeZoneHigh )

        {

        DRMLOG2( _L("TimeZone invalid, time may be as well, aborting change: %d"), aTimeZone  );

        User::Leave( KErrArgument );

        }

    // Get the current secure time with timezone

    // Ask the hometime first so that rounding of any divider goes correctly

    error = previousTimeLocal.HomeTimeSecure(); 

    // If there is an error, the secure hometime has not been set

    // Which means that the UI clock has the valid data

    if( error )

        {

        previousTimeLocal.HomeTime();

        previousTime.UniversalTime();

        timezone = ( previousTimeLocal.Int64() - previousTime.Int64() ) / 

                   ( KMinuteInMicroseconds* KTimeZoneIncrement );

		change->SetOldSecurityLevel( DRMClock::KInsecure );

		}

	else

		{

		previousTime.UniversalTimeSecure();		                   

        timezone = ( previousTimeLocal.Int64() - previousTime.Int64() ) / 

                   ( KMinuteInMicroseconds* KTimeZoneIncrement );

		change->SetOldSecurityLevel( DRMClock::KSecure );

		change->SetNewSecurityLevel( DRMClock::KSecure );

		}

    // Since it's not important to get the timezone we keep what is set or reset it:

    previousTimeLocal = aTime.Int64() + ( timezone * ( KMinuteInMicroseconds* KTimeZoneIncrement ) );

    // Do the actual updating:

    // Update using the wmdrm fileserver since it has TCB capability

    RWmDrmFileServerClient resetclient;

    User::LeaveIfError( resetclient.Connect() );

    CleanupClosePushL( resetclient );

    newTime = aTime;

    User::LeaveIfError( resetclient.UpdateSecureTime( previousTimeLocal, newTime ) );

    CleanupStack::PopAndDestroy();

    DRMLOG( _L( "CDRMClock::ResetSecureTimeL: AFTER RESET." ));	

    // DRM Notifier data:

    // send info about the change:

    change->SetNewSecurityLevel( DRMClock::KSecure );

    change->SetOldTime( previousTime );

    change->SetOldTimeZone( timezone );

    change->SetNewTime( aTime );

    change->SetNewTimeZone( timezone );

    // Notify clients

    iNotifier->SendEventL(*change,status);

    User::WaitForRequest(status);

    CleanupStack::PopAndDestroy();    

    DRMLOG( _L( "CDRMClock::ResetSecureTimeL ok" ) );

    };

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

// CDRMClock::ConnectToPhoneL(const TDateTime& aDateTime)

// Gets the nitz time from iNitzInfo

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

//

void CDRMClock::ConnectToPhoneL()

    {

    DRMLOG( _L( "CDRMClock::ConnectToPhoneL" ) );

    const TInt KTriesToConnectServer(10);

    const TInt KTimeBeforeRetryingServerConnection(100000);

    TInt thisTry(0);

    TInt err(KErrNone);

    TInt numPhone;

    TName tsyName;

    RTelServer::TPhoneInfo phoneInfo;

    RMobilePhone::TMobilePhoneSubscriberId imsi;

    TRequestStatus status;

    while ((err = iEtelServer.Connect()) != KErrNone &&

                            (thisTry++) <= KTriesToConnectServer)

        {

        User::After(KTimeBeforeRetryingServerConnection);

        }

    User::LeaveIfError(err);

    User::LeaveIfError(iEtelServer.LoadPhoneModule(KMmTsyModuleName));

    User::LeaveIfError(iEtelServer.EnumeratePhones(numPhone));

    for (TInt i(0); i < numPhone; i++)

        {

        User::LeaveIfError(iEtelServer.GetPhoneInfo(i, phoneInfo));

        User::LeaveIfError(iEtelServer.GetTsyName(i,tsyName));

        if (tsyName.CompareF(KMmTsyModuleName) == 0)

            {

            break;

            }

        }

    User::LeaveIfError(iPhone.Open(iEtelServer, phoneInfo.iName));   

    iPhone.GetSubscriberId( status, imsi );

    User::WaitForRequest( status );

    DRMLOG( imsi );    

    DRMLOG( _L( "CDRMClock::ConnectToPhoneL ok" ) );

    };

// ========================== OTHER EXPORTED FUNCTIONS =========================

//  End of File