/*

* Copyright (c) 2006-2008 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:  Server-side implementation of BTEng

*

*/

#include <e32base.h>

#include <btmanclient.h>

#include <es_sock.h>

#include <btnotif.h>

#include <utf.h>

#include <ecom/ecom.h>

#include <centralrepository.h>

#include <btengdomaincrkeys.h>

#include <bt_subscribe.h>

#include "btengserver.h"

#include "btengsrvstate.h"

#include "btengsrvsession.h"

#include "btengsrvpluginmgr.h"

#include "btengsrvbbconnectionmgr.h"

#include "btengsrvsettingsmgr.h"

#include "btengsrvkeywatcher.h"

#include "btengsdpdbhandler.h"

#include "btengclientserver.h"

#include "btengsecpolicy.h"

#include "btengprivatepskeys.h"

#include "btengplugin.h"

#include "debug.h"

/**  Bluetooth Engine server thread name */

_LIT( KBTEngThreadName, "BTEngine" );

/**  Timeout (3 sec) for shutting down the server (when power is off and no clients connected). */

const TInt KBTEngSrvIdleTimeout = 3000000;

/**  PubSub key read and write policies */

_LIT_SECURITY_POLICY_C2( KBTEngPSKeyReadPolicy, ECapabilityLocalServices, ECapabilityReadDeviceData );

_LIT_SECURITY_POLICY_C2( KBTEngPSKeyWritePolicy, ECapabilityLocalServices, ECapabilityWriteDeviceData );

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

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

// Constructs and returns an application object.

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

//

void RunServerL()

    {

    TRACE_FUNC_ENTRY

    User::RenameThread( KBTEngThreadName );

        // Create and install the active scheduler for this thread.

    CActiveScheduler* scheduler = new( ELeave ) CActiveScheduler();

    CleanupStack::PushL( scheduler );

    CActiveScheduler::Install( scheduler );

        // create the server (leave it on the cleanup stack)

	CBTEngServer* btServer = CBTEngServer::NewLC();

        // Initialisation complete, now signal the client

    RProcess::Rendezvous( KErrNone );

        // The server is not up and running.

    TRACE_INFO( ( _L( "[BTENG]\t BTEng server now up and running" ) ) )

	    // The active scheduler runs during the lifetime of this thread.

    CActiveScheduler::Start();

        // Cleanup the server and scheduler.

    CleanupStack::PopAndDestroy( btServer );

    CleanupStack::PopAndDestroy( scheduler );

    TRACE_FUNC_EXIT

    }

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

// Completes the message and panics the client.

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

//

void PanicClient( const RMessage2& aMessage, TInt aPanic )

    {

    TRACE_INFO( ( _L( "[BTENG]\t PanicClient: Reason %d" ), aPanic ) )

    aMessage.Panic( KBTEngPanic, aPanic );

    }

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

// Panic the server.

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

//

void PanicServer( TInt aPanic )

    {

    TRACE_INFO( ( _L( "[BTENG]\t PanicClient: Reason %d" ), aPanic ) )

    User::Panic( KBTEngPanic, aPanic );

    }

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

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

// C++ default constructor

// (Priority is not as high as in prev. architecture, but should be enough)

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

//

CBTEngServer::CBTEngServer()

:   CPolicyServer( EPriorityHigh, KBTEngServerPolicy )

    {

    }

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

// Symbian 2nd-phase constructor

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

//

void CBTEngServer::ConstructL()

    {

    TRACE_FUNC_ENTRY

        // No need to check _BT flag here, as the server can 

        // only be started by BTEng components.

        // Add the server to the active scheduler (from CServer2):

    StartL( KBTEngServerName );

    User::LeaveIfError( RProperty::Define( KPSUidBluetoothTestingMode, KBTDutEnabled, 

                                            RProperty::EInt, KBTEngPSKeyReadPolicy, 

                                            KBTEngPSKeyWritePolicy ) );

    User::LeaveIfError( RProperty::Define( KPSUidBluetoothTestingMode, KBTSspDebugmode, 

                                            RProperty::EInt, KBTEngPSKeyReadPolicy, 

                                            KBTEngPSKeyWritePolicy ) );

    User::LeaveIfError( RProperty::Define( KPSUidBluetoothEnginePrivateCategory, 

                                            KBTBlockDevAddr, RProperty::EText, 

                                            KBTEngPSKeyReadPolicy, 

                                            KBTEngPSKeyWritePolicy ) );

    User::LeaveIfError( RProperty::Define( KPSUidBluetoothEnginePrivateCategory,

                                            KBTOutgoingPairing,

                                            RProperty::EByteArray,

                                            KBTEngPSKeyReadPolicy,

                                            KBTEngPSKeyWritePolicy) );

    User::LeaveIfError( RProperty::Define( KPSUidBluetoothEnginePrivateCategory,

                                            KBTConnectionTimeStamp,

                                            RProperty::EByteArray,

                                            KBTEngPSKeyReadPolicy,

                                            KBTEngPSKeyWritePolicy) );

    User::LeaveIfError( RProperty::Define( KPSUidBluetoothEnginePrivateCategory,

                                            KBTTurnBTOffQueryOn,

                                            RProperty::EInt,

                                            KBTEngPSKeyReadPolicy,

                                            KBTEngPSKeyWritePolicy) );

    User::LeaveIfError( RProperty::Define( KPSUidBluetoothEnginePrivateCategory,

                                            KBTNotifierLocks,

                                            RProperty::EByteArray,

                                            KBTEngPSKeyReadPolicy,

                                            KBTEngPSKeyWritePolicy) );    

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

        // The server is only started by its client, so leave the state 

        // machine in Init state. A request to turn power on will follow 

        // usually immediately.

    iServerState = CBTEngSrvState::NewL( this );

    iWatcher = CBTEngSrvKeyWatcher::NewL( this );

    iSettingsMgr = CBTEngSrvSettingsMgr::NewL( this );

    iPluginMgr = CBTEngSrvPluginMgr::NewL( this );

    iBBConnMgr = CBTEngSrvBBConnMgr::NewL( this, iSocketServ );

    TCallBack idleCb( IdleTimerCallBack, this );

    iIdleCallBack.Set( idleCb );

    TCallBack sspCb( DebugModeTimerCallBack, this );

    iDebugModeCallBack.Set( sspCb );

    TCallBack scanModeCb( ScanModeTimerCallBack, this );

    iScanModeCallBack.Set( scanModeCb );

    TCallBack powerOffCb( AutoPowerOffCallBack, this );

    iPowerOffCallBack.Set( powerOffCb );

    iTimer = CDeltaTimer::NewL(CActive::EPriorityLow);

    TRACE_FUNC_EXIT

    }

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

// NewL

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

//

CBTEngServer* CBTEngServer::NewLC()

    {

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

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// Destructor

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

//

CBTEngServer::~CBTEngServer()

    {

    TRACE_FUNC_ENTRY

    if( iTimer )

        {

        iTimerQueued = ENone;

        iTimer->Remove( iScanModeCallBack );

        iTimer->Remove( iPowerOffCallBack );

        iTimer->Remove( iIdleCallBack );

        iTimer->Remove( iDebugModeCallBack );

        }

    RProperty::Delete( KPSUidBluetoothTestingMode, KBTDutEnabled );

    RProperty::Delete( KPSUidBluetoothTestingMode, KBTSspDebugmode );

    RProperty::Delete( KPSUidBluetoothEnginePrivateCategory, KBTBlockDevAddr );

    RProperty::Delete( KPSUidBluetoothEnginePrivateCategory, KBTOutgoingPairing );

    RProperty::Delete( KPSUidBluetoothEnginePrivateCategory, KBTConnectionTimeStamp );

    RProperty::Delete( KPSUidBluetoothEnginePrivateCategory, KBTTurnBTOffQueryOn );

    RProperty::Delete( KPSUidBluetoothEnginePrivateCategory, KBTNotifierLocks );

    delete iTimer;

    delete iWatcher;

    delete iSettingsMgr;

    delete iPluginMgr;

    delete iBBConnMgr;

    delete iServerState;

    iSocketServ.Close();

    }

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

// Turn BT on or off.

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

//

void CBTEngServer::SetPowerStateL( TBTPowerState aState, TBool aTemporary )

    {

    TRACE_FUNC_ARG( ( _L( "setting power state %d (temporary=%d" ), (TInt) aState, aTemporary ) )

    iSettingsMgr->SetPowerStateL( aState, aTemporary );

    TRACE_FUNC_EXIT

    }

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

// Turn BT on or off.

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

//

void CBTEngServer::SetPowerStateL(const RMessage2 aMessage )

    {

    TRACE_FUNC_ENTRY

    iSettingsMgr->SetPowerStateL( aMessage );

    TRACE_FUNC_EXIT

    }

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

// ?implementation_description

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

//

void CBTEngServer::DisconnectAllForPowerOffL()

    {

    TRACE_FUNC_ENTRY

    TCallBack cb( DisconnectAllCallBack, this );

    iBBConnMgr->DisconnectAllLinksForPowerOffL( cb );

    }

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

// ?implementation_description

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

//

void CBTEngServer::DisconnectAllCompleted()

    {

        // Check if we are powering off. Otherwise we have just been 

        // requested to disconnect all, e.g. for system shutdown.

    if( iServerState->CurrentOperation() == CBTEngSrvState::EPowerOff )

        {

        (void) iSettingsMgr->SetHwPowerState( EBTOff );

            // Put the state machine into idle state.

        iServerState->ChangeState();

        }

    }

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

// ?implementation_description

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

//

void CBTEngServer::DispatchPluginMessageL( const RMessage2& aMessage )

    {

    iPluginMgr->ProcessCommandL( aMessage );

    }

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

// A new session has been added, update the session count.

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

//

void CBTEngServer::AddSession()

    {

    iSessionCount++;

        // Remove the idle timer.

    iTimerQueued &= ~EIdleTimer;

    iTimer->Remove( iIdleCallBack );

    }

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

// A session has been ended, update the session count and inform others.

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

//

void CBTEngServer::RemoveSession( CSession2* aSession, TBool aAutoOff )

    {

	TRACE_FUNC_ENTRY

	TRACE_INFO( ( _L( "[CBTEngServer]\t aAutoOff %d"), aAutoOff ))

	TRACE_INFO( ( _L( "[CBTEngServer]\t iSessionCount %d"), iSessionCount ))

    iSessionCount--;

	iSettingsMgr->SessionClosed( aSession );

    if( aAutoOff )

        {

        TRAP_IGNORE( SetPowerStateL( EBTOff, ETrue ) );

        }

    else

        {

        CheckIdle();

        }

	TRACE_FUNC_EXIT

    }

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

// Queue a new timer.

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

//

void CBTEngServer::QueueTimer( CBTEngServer::TTimerQueued aTimer, TInt64 aInterval )

    {

    TRACE_FUNC_ARG( ( _L( "queueing timer %d" ), (TInt) aTimer ) )

    __ASSERT_DEBUG( iTimer, PanicServer( EBTEngPanicMemberVarIsNull ) );

    iTimerQueued |= aTimer;

    TTimeIntervalMicroSeconds interval( aInterval );

    switch( aTimer )

        {

        case EScanModeTimer:

            (void) iTimer->QueueLong( interval, iScanModeCallBack );

            break;

        case EIdleTimer:

            iTimer->QueueLong( aInterval, iIdleCallBack );

            break;

        case EAutoPowerOffTimer:

            iTimer->QueueLong( aInterval, iPowerOffCallBack );

            break;

        case ESspDebugModeTimer:

            iTimer->QueueLong( aInterval, iDebugModeCallBack );

            break;

        default:

            PanicServer( EBTEngPanicCorrupt );

        }

    }

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

// Remove a queued timer.

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

//

void CBTEngServer::RemoveTimer( CBTEngServer::TTimerQueued aTimer )

    {

    TRACE_FUNC_ARG( ( _L( "removing timer %d" ), (TInt) aTimer ) )

    if(!iTimer)

        {

        return; // not fully constructed yet, don't do anything

        }

    iTimerQueued &= ~aTimer;

    // Timers can be removed without being queued, no need to check.

    switch( aTimer )

        {

        case EScanModeTimer:

            iTimer->Remove( iScanModeCallBack );

            break;

        case EIdleTimer:

            iTimer->Remove( iIdleCallBack );

            break;

        case EAutoPowerOffTimer:

            iTimer->Remove( iPowerOffCallBack );

            break;

        case ESspDebugModeTimer:

            iTimer->Remove( iDebugModeCallBack );

            break;

        default:

            PanicServer( EBTEngPanicCorrupt );

        }

    TRACE_FUNC_EXIT

    }

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

// From class CPolicyServer.

// Checks version compatibility and constructs a new session object.

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

//

CSession2* CBTEngServer::NewSessionL( const TVersion& aVersion, 

    const RMessage2& aMessage ) const

    {

    TRACE_FUNC_ENTRY

    (void) aMessage;

    // Compare our version with client-side version, CServer2 requires that 

    // we leave if they are not compatible. 

    // Compatible is interpreted here as equal or greater than our version.

    TVersion srvVersion( KBTEngServerVersionMajor, KBTEngServerVersionMinor, 

                          KBTEngServerVersionBuild );

    if( !User::QueryVersionSupported( aVersion, srvVersion ) )

        {

        // EFalse is returned if our version is not less than or 

        // equal to the client version.

        User::Leave( KErrNotSupported );

        }

    return CBTEngSrvSession::NewL();

    }

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

// ?implementation_description

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

//

void CBTEngServer::CheckIdle()

    {

    TRACE_FUNC_ENTRY

    __ASSERT_DEBUG( iTimer, PanicServer( EBTEngPanicMemberVarIsNull ) );

    iTimerQueued &= ~EIdleTimer;

    iTimer->Remove( iIdleCallBack );

    if( iSessionCount <= 0 )

        {

            // No more sessions, check the power state.

        TBTPowerState power = EBTOff;

        TInt err = iSettingsMgr->GetHwPowerState( power );

        TRACE_INFO( ( _L( "[BTEng]\t No sessions; power state: %d" ), power ) )

        if( !err && power == EBTOff

            && iServerState->CurrentOperation() == CBTEngSrvState::ESrvOpIdle )

            {

            TRACE_INFO( ( _L( "[BTEng]\t Power off; starting shutdown timer" ) ) )

                // power is off, start the shutdown timer.

            TTimeIntervalMicroSeconds32 interval = KBTEngSrvIdleTimeout;

            iTimer->Queue( interval, iIdleCallBack );

            iTimerQueued |= EIdleTimer;

            }

        }

    }

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

// ?implementation_description

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

//

void CBTEngServer::ManageDIServiceL( TBool aState )

    {

    TRACE_FUNC_ENTRY

        // The session with the SDP database is kept open during the 

        // lifetime of BTEng server. This ensures that the database server 

        // will not destroy itself (and the SDP record) when there are no 

        // sessions anymore (which it would do). This also ensures that other 

        // sessions (of BT Engine Discovery API) can be closed without the SDP

        // database being destroyed, and so saving memory.

    TInt err = KErrNone;

    if( !iSdpDbHandler )

        {

        iSdpDbHandler = CBTEngSdpDbHandler::NewL();

        }

    if( aState && !iDiSdpRecHandle )

        {

            // Use TRAP here, because the function will leave if 

            // the required CenRep keys are not available.

        TInt vendorId = 0;

        TInt productId = 0;

        TRAP( err, GetProductIdsL( vendorId, productId ) );

#ifdef  __WINS__

        err = KErrNone; // Ignore error and load with S60 RnD default values.

#endif  //__WINS__

        if( !err )

            {

            TUUID uuid( EBTProfileDI );

            iSdpDbHandler->RegisterSdpRecordL( uuid, vendorId, productId, 

                                                iDiSdpRecHandle );

            }

        }

    if( ( !aState || err ) && iDiSdpRecHandle )

        {

            // Either we are shutting down, or we did not manage 

            // to fill the record with required data -> delete it.

        iSdpDbHandler->DeleteSdpRecordL( iDiSdpRecHandle );

        iDiSdpRecHandle = 0;

        delete iSdpDbHandler;

        iSdpDbHandler = NULL;

        }

    User::LeaveIfError( err );  // To pass back the result of the operation.

    TRACE_FUNC_EXIT

    }

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

// ?implementation_description

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

//

void CBTEngServer::GetProductIdsL( TInt& aVendorId, TInt& aProductId )

    {

    TRACE_FUNC_ENTRY

    CRepository* cenRep = CRepository::NewLC( KCRUidBluetoothEngine );

    User::LeaveIfError( cenRep->Get( KBTVendorID, aVendorId ) );

    User::LeaveIfError( cenRep->Get( KBTProductID, aProductId ) );

    CleanupStack::PopAndDestroy( cenRep );  //cenRep

    }

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

// Ask plugin manager the connection status of the specified device

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

//

TBTEngConnectionStatus CBTEngServer::IsDeviceConnected( const TBTDevAddr& aAddr )

    {

    TBTEngConnectionStatus status = EBTEngNotConnected;

    if ( iPluginMgr )

        {