/*

* Copyright (c) 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 CSsmStartupPolicy class.

*

*/

#include <centralrepository.h>

#include <e32property.h>

#include <e32uid.h>

#include <featmgr.h>

#include <ssm/ssmdomaindefs.h>

#include <ssm/ssmcmd.hrh>

#include <ssm/ssmcommandlistresourcereader.h>

#include <ssm/ssmstate.h>

#include <ssm/ssmstateawaresession.h>

#include <ssm/ssmstatetransition.h>

#include <ssm/startupdomainpskeys.h>

#include "ssmsubstateext.hrh"

#include "ssmmapperutility.h"

#include "ssmmapperutilitystatic.h"

#include "ssmstartuppolicy.h"

#include "ssmpolicypluginsprivatecrkeys.h"

#include "trace.h"

/**

* Start-up state policy resource file path format :

* "\private\<SID of SSM>\startup\<Value of KSystemStartupModeKey>\"

*/

_LIT( KCommandListPath, "Z:\\private\\2000D75B\\startup\\%d\\" );

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

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

// GetStartupMode

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

//

static TInt GetStartupMode()

    {

    FUNC_LOG;

    TInt startupMode( EStartupModeNormal );

    TInt errorCode = RProperty::Get(

        SsmMapperUtility::PsUid( KPSUidStartup ), KPSGlobalStartupMode, startupMode );

    ERROR( errorCode, "Failed to read startup mode from P&S" );

    INFO_1( "Startup mode is %d", startupMode );

    return startupMode;

    }

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

// DecideStateByStartupMode

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

//

static TSsmStartupSubStateExt DecideStateByStartupMode()

    {

    FUNC_LOG;

    TInt startupMode( GetStartupMode() );

    TSsmStartupSubStateExt nextState( ESsmStateSecurityCheck );

    switch ( startupMode )

        {

        case EStartupModeTest:

            nextState = ESsmStateTest;

            break;

        case EStartupModeAlarm:

            nextState = ESsmStateAlarm;

            break;

        case EStartupModeCharging:

            nextState = ESsmStateCharging;

            break;

        default:

            break;

        }

    return nextState;

    }

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

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

// CSsmStartupPolicy::NewL

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

//

EXPORT_C MSsmStatePolicy* CSsmStartupPolicy::NewL()

    {

    CSsmStartupPolicy* self = new( ELeave ) CSsmStartupPolicy;

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// CSsmStartupPolicy::~CSsmStartupPolicy

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

//

CSsmStartupPolicy::~CSsmStartupPolicy()

    {

    FUNC_LOG;

    }

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

// CSsmStartupPolicy::GetNextState

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

//

TBool CSsmStartupPolicy::GetNextState(

    TSsmState aCurrentTransition,

    TInt /*aReason*/,

    TInt aError,

    TInt aSeverity,

    TSsmState& aNextState )

    {

    FUNC_LOG;

    INFO_2( "Current state %04x.%04x",

        aCurrentTransition.MainState(), aCurrentTransition.SubState() );

    ERROR_1( aError, "State transition resulted in an error, severity %d", aSeverity );

	ASSERT_TRACE( aCurrentTransition.MainState() == ESsmStartup );

	TBool moreToCome = EFalse;

	if ( aError == KErrNone || aSeverity < ECmdHighSeverity )

		{

		switch( aCurrentTransition.SubState() )

			{

			case KSsmAnySubState:

			case ESsmStatePreUiServices:

				aNextState = TSsmState( ESsmStartup, ESsmStateStartingUiServices );

				moreToCome = ETrue;

				break;

			case ESsmStateStartingUiServices:

				aNextState = TSsmState( ESsmStartup, ESsmStateStartingCriticalApps );

				moreToCome = ETrue;

				break;

			case ESsmStateStartingCriticalApps:

				aNextState = TSsmState( ESsmStartup, ESsmStateSelfTestOK );

				moreToCome = ETrue;

				break;

			case ESsmStateSelfTestOK:

				aNextState = TSsmState( ESsmStartup, DecideStateByStartupMode() );

				moreToCome = ETrue;

				break;

			case ESsmStateChargingToNormal:

			case ESsmStateAlarmToNormal:

				aNextState = TSsmState( ESsmStartup, ESsmStateSecurityCheck );

				moreToCome = ETrue;

				break;

			case ESsmStateSecurityCheck:

				aNextState = TSsmState( ESsmStartup, SelectStateAfterSecurityCheck() );

				moreToCome = ETrue;

				break;

			case ESsmStateChargingToAlarm:

				aNextState = TSsmState( ESsmStartup, ESsmStateAlarm );

				moreToCome = ETrue;

				break;

			case ESsmStateAlarmToCharging:

				aNextState = TSsmState( ESsmStartup, ESsmStateCharging );

				moreToCome = ETrue;

				break;

			case ESsmStateNonCritical:

			    ClearResetCounter(); // start-up is successful

				aNextState = TSsmState( ESsmNormal, KSsmAnySubState );

				moreToCome = ETrue;

				break;

			case ESsmStateAlarm:

			case ESsmStateCharging:

			case ESsmStateTest:

				moreToCome = EFalse;

				break;

			case ESsmStateEmergencyCallsOnly:

			    ClearResetCounter(); // start-up is successful

				moreToCome = EFalse;

				break;

			default:

        		ASSERT_ALWAYS_TRACE;

				break;

			}

		}

	else

		{

        if ( ResetLimitReached() ) // Updates the reset count

            {

            aNextState = TSsmState( ESsmFail, KSsmAnySubState );

	    	moreToCome = ETrue;

    	    }

    	else

    	    {

            aNextState = TSsmState( ESsmShutdown, ESsmErrorShutdown );

            moreToCome = ETrue;

    	    }

		}

	return moreToCome;

    }

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

// CSsmStartupPolicy::GetCommandListPathL

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

//

void CSsmStartupPolicy::GetCommandListPathL( TDes& aCmdListPath )

    {

    FUNC_LOG;

	aCmdListPath.Format( KCommandListPath, iHardwareReason );

	iUtil->GetCommandListPath( aCmdListPath );

    }

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

// CSsmStartupPolicy::IsAllowedTargetState

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

//

TBool CSsmStartupPolicy::IsAllowedTargetState(

    const TSsmStateTransition& aRequest ) const

    {

    FUNC_LOG;

    TSsmState currentState;

    TInt errorCode = GetCurrentState( currentState );

    ERROR( errorCode, "Failed to get current state" );

    if ( errorCode == KErrNone )

        {

        TUint16 reqMainState( aRequest.State().MainState() );

        TUint16 reqSubState( aRequest.State().SubState() );

        INFO_2( "Requested target state = %04x.%04x", reqMainState, reqSubState );

        TUint16 curMainState( currentState.MainState() );

        TUint16 curSubState( currentState.SubState() );

        INFO_2( "Current state = %04x.%04x", curMainState, curSubState );

        if ( reqMainState == ESsmStartup )

            {

            if ( ( curSubState == ESsmStateCharging &&

                   ( reqSubState == ESsmStateChargingToAlarm ||

                     reqSubState == ESsmStateChargingToNormal ) ) ||

                 ( curSubState == ESsmStateAlarm &&

                   ( reqSubState == ESsmStateAlarmToCharging ||

                     reqSubState == ESsmStateAlarmToNormal ) ) )

                {

                return ETrue;

                }

            }

        else if ( reqMainState == ESsmNormal )

            {

            if ( ( curMainState == ESsmStartup &&

                   curSubState == ESsmStateNonCritical ) )

                {

                return ETrue;

                }

            }

        else if ( reqMainState == ESsmFail ||

                  reqMainState == ESsmShutdown )

            {

            return ETrue;

            }

        }

    return EFalse;

    }

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

// CSsmStartupPolicy::TargetSubState

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

//

TUint16 CSsmStartupPolicy::TargetSubState( const TUint16 aRequestedSubState )

    {

    FUNC_LOG;

    INFO_1( "Requested sub state %04x", aRequestedSubState );

	return ( aRequestedSubState == KSsmAnySubState ) ?

        ESsmStatePreUiServices : aRequestedSubState;

    }

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

// CSsmStartupPolicy::CSsmStartupPolicy

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

//

CSsmStartupPolicy::CSsmStartupPolicy()

    {

    FUNC_LOG;

    }

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

// CSsmStartupPolicy::ConstructL

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

//

void CSsmStartupPolicy::ConstructL()

    {

    FUNC_LOG;

	// Read the hardware reason

	User::LeaveIfError( RProperty::Get(

	    KUidSystemCategory, KSystemStartupModeKey, iHardwareReason ) );

    BaseConstructL();

    }

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

// CSsmStartupPolicy::IsSimlessOfflineSupported

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

//

TBool CSsmStartupPolicy::IsSimlessOfflineSupported()

    {

    FUNC_LOG;

    TBool ret( EFalse );

    ret = ( iUtil->FeatureStatus( TUid::Uid( KFeatureIdOfflineMode ) ) ||

            iUtil->FeatureStatus( TUid::Uid( KFeatureIdFlightMode ) ) ) &&

            iUtil->FeatureStatus( TUid::Uid( KFeatureIdFfSimlessOfflineSupport ) );

    INFO_1( "Simless offline supported = %d", ret );

    return ret;

    }

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

// CSsmStartupPolicy::SelectStateAfterSecurityCheck

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

//

TUint16 CSsmStartupPolicy::SelectStateAfterSecurityCheck()

    {

    FUNC_LOG;

    TInt value( ESimStatusUninitialized );

    TInt errorCode = RProperty::Get( iUtil->PsUid( KPSUidStartup ), KPSSimStatus, value );

    ERROR( errorCode, "Failed to read KPSUidStartup::KPSSimStatus P&S key" );

    INFO_1( "Current SIM status = %d", value );

    TUint16 retVal( ESsmStateEmergencyCallsOnly );

    if ( errorCode == KErrNone )

        {

        if ( value == ESimUsable || value == ESimNotSupported )

            {

            retVal = ESsmStateNonCritical;

            }

        else if ( value == ESimNotPresent && IsSimlessOfflineSupported() )

            {

            retVal = ESsmStateNonCritical;

            }

        }

    INFO_1( "State selected after security check = %04x", retVal );

    return retVal;

    }

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

// CSsmStartupPolicy::ClearResetCounter

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

//

void CSsmStartupPolicy::ClearResetCounter()

    {

    FUNC_LOG;

    TRAPD_ERR( errorCode, ClearResetCounterL() );

    ERROR( errorCode, "Failed to clear reset counter" );

    }

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

// ClearResetCounterL

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

//

void CSsmStartupPolicy::ClearResetCounterL()

    {

    FUNC_LOG;

    CRepository* repository = CRepository::NewLC( iUtil->CrUid( KCRUidSsmStartupPolicy ) );

    User::LeaveIfError( repository->Set( KSsmStartupErrorResetCounter, 0 ) );

    CleanupStack::PopAndDestroy( repository );

    }