diff -r f742655b05bf -r d38647835c2e convergedconnectionhandler/cchserver/src/cchcommdbwatcher.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/convergedconnectionhandler/cchserver/src/cchcommdbwatcher.cpp	Wed Sep 01 12:29:57 2010 +0100
@@ -0,0 +1,607 @@
+/*
+* Copyright (c) 2007 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:  CCCHCommDbWatcher implementation
+*
+*/
+
+
+// INCLUDE FILES
+#include <cmdestination.h>
+#include <cmconnectionmethoddef.h>
+#include <cmpluginwlandef.h>
+#include <cmpluginvpndef.h>
+#include <centralrepository.h>
+#include <commsdat.h>
+
+#include "cchcommdbwatcher.h"
+#include "cchcommdbwatcherobserver.h"
+#include "cchlogger.h"
+#include "d32dbms.h"
+
+// EXTERNAL DATA STRUCTURES
+// None
+
+// EXTERNAL FUNCTION PROTOTYPES
+// None
+
+// CONSTANTS
+// None
+
+// MACROS
+// None
+
+// LOCAL CONSTANTS AND MACROS
+const TInt KDefaultGranularity = 5;
+const TInt KMaxCheckAttempts   = 3;
+// Repository for CommsDat
+const TUid KCDCommsRepositoryId = { 0xCCCCCC00 };
+
+// MODULE DATA STRUCTURES
+// None
+
+// LOCAL FUNCTION PROTOTYPES
+// None
+
+// FORWARD DECLARATIONS
+// None
+
+// ============================= LOCAL FUNCTIONS =============================
+
+// ============================ MEMBER FUNCTIONS =============================
+
+// ---------------------------------------------------------------------------
+// CCCHCommDbWatcher::CCCHCommDbWatcher
+// C++ default constructor can NOT contain any code, that might leave.
+// ---------------------------------------------------------------------------
+//
+CCCHCommDbWatcher::CCCHCommDbWatcher( MCCHCommDbWatcherObserver& aObserver ) :
+    CActive( CActive::EPriorityStandard ), 
+    iObserver( aObserver ), 
+    iTableId( KCDTIdIAPRecord )
+    {
+    CActiveScheduler::Add( this );
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::ConstructL
+// Symbian 2nd phase constructor can leave.
+// ---------------------------------------------------------------------------
+//
+void CCCHCommDbWatcher::ConstructL()
+    {
+    CCHLOGSTRING( "CCCHCommDbWatcher::ConstructL IN" );
+    
+    iRepository = CRepository::NewL( KCDCommsRepositoryId );
+    iDestinations = RArray<TDestinationData>( KDefaultGranularity );
+    
+    InitializeDestination();
+    TInt err( RequestNotifications() );
+    User::LeaveIfError( err );
+    CCHLOGSTRING( "CCCHCommDbWatcher::ConstructL OUT" );
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::NewL
+// Two-phased constructor.
+// ---------------------------------------------------------------------------
+//
+CCCHCommDbWatcher* CCCHCommDbWatcher::NewL( 
+    MCCHCommDbWatcherObserver& aObserver )
+    {
+    CCCHCommDbWatcher* self = CCCHCommDbWatcher::NewLC( aObserver );
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::NewLC
+// Two-phased constructor.
+// ---------------------------------------------------------------------------
+//
+CCCHCommDbWatcher* CCCHCommDbWatcher::NewLC( 
+    MCCHCommDbWatcherObserver& aObserver )
+    {
+    CCCHCommDbWatcher* self = new (ELeave) CCCHCommDbWatcher( aObserver );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    return self;
+    }
+
+// Destructor
+CCCHCommDbWatcher::~CCCHCommDbWatcher()
+    {
+    CCHLOGSTRING( "CCCHCommDbWatcher::~CCCHCommDbWatcher" );
+    iDestinations.Close();
+    // Cancel outstanding request, if exists
+    Cancel();
+    delete iRepository;
+    if ( iCmmOpen )
+        {
+        iCmm.Close();
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::RequestNotifications()
+// 
+// ---------------------------------------------------------------------------
+//
+TInt CCCHCommDbWatcher::RequestNotifications()
+    {
+    CCHLOGSTRING( "CCCHCommDbWatcher::RequestNotifications()" );   
+    CCHLOGSTRING2( "Calling iRepository->NotifyRequest() for table 0x%08X", iTableId );
+    TInt err = iRepository->NotifyRequest( iTableId, KCDMaskShowRecordType, iStatus );
+
+    if ( KErrNone == err )
+        {
+        SetActive();
+        }
+    else
+        {
+        CCHLOGSTRING2( "ERROR, iRepository->NotifyRequest() <%d>", err );
+        }
+    return err;
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::CmManagerL
+// 
+// ---------------------------------------------------------------------------
+//
+RCmManager& CCCHCommDbWatcher::CmManagerL()
+    {
+    // Remove this method and open cmmanager connection in ConstructL
+    // after cmmanager is refactored -> to become a server, schedule is unknown
+    if ( !iCmmOpen )
+        {
+        CCHLOGSTRING( "CCCHCommDbWatcher::CmManagerL open connection" );
+        iCmm.OpenL();
+        iCmmOpen = ETrue;
+        }
+    
+    return iCmm; 
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::GetWLANIapCountFromSnap
+//
+// ---------------------------------------------------------------------------
+//
+TInt CCCHCommDbWatcher::GetIapCountFromSnap( 
+    TInt aSNAPId, 
+    TBool aWLANIapsOnly,
+    TBool aUpdateDestinations )
+    {
+    CCHLOGSTRING( "CCCHCommDbWatcher::GetIapCountFromSnap - Forced CheckIapsL" );
+
+    // Remove this error check after cmmanager is refactored -> to become 
+    // a server, schedule is unknown
+    // Force destination update if we are pending unlock event
+    if ( iLastError || iUseForce || aUpdateDestinations )
+        {
+        CCHLOGSTRING( "CCCHCommDbWatcher::GetIapCountFromSnap - Forced DESTINATION UPDATE" );
+        InitializeDestination();
+        iUseForce = EFalse;
+        }
+    
+    TInt iaps( KErrNotFound );
+    for ( TInt i = 0; iaps == KErrNotFound && i < iDestinations.Count(); i++ )
+        {
+        if ( iDestinations[ i ].iDestId == aSNAPId )
+            {
+            iaps = 0; //if destination is not found, KErrNotFound is returned
+            if ( aWLANIapsOnly )
+                {
+                iaps = iDestinations[ i ].iWlanIaps;
+                }
+            else
+                {
+                iaps = iDestinations[ i ].iIapCount;
+                }
+            }
+        }
+        
+    return iaps;
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::IsVpnApL
+//
+// ---------------------------------------------------------------------------
+//
+TBool CCCHCommDbWatcher::IsVpnApL(
+    TInt aIapId )
+    {
+    CCHLOGSTRING( "CCCHCommDbWatcher::IsVpnApL: IN" );
+    TBool response( KPluginVPNBearerTypeUid == GetBearerL( aIapId ) );
+    CCHLOGSTRING3( "CCCHCommDbWatcher::IsVpnApL: iap id: %d is vpn ap: %d", 
+            aIapId, response );
+    return response;
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::IsWLANAPL
+//
+// ---------------------------------------------------------------------------
+//
+TBool CCCHCommDbWatcher::IsWlanApL( 
+    TInt aIapId )
+    {
+    CCHLOGSTRING( "CCCHCommDbWatcher::IsWLANAPL: IN" );
+    TBool response( KUidWlanBearerType == GetBearerL( aIapId ) );
+    
+    CCHLOGSTRING3( "CCCHCommDbWatcher::IsWLANAPL: iap id: %d is wlan ap: %d", 
+        aIapId, response );
+    return response;
+    }
+   
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::GetBearerL
+//
+// ---------------------------------------------------------------------------
+//
+TUint32 CCCHCommDbWatcher::GetBearerL( 
+    TInt aIapId )
+    {
+    return CmManagerL().ConnectionMethodL( aIapId ).GetIntAttributeL( 
+            CMManager::ECmBearerType );
+    }
+    
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::RunL
+//
+// ---------------------------------------------------------------------------
+//
+void CCCHCommDbWatcher::RunL()
+    {
+    if ( iStatus.Int() < KErrNone )
+        {
+        CCHLOGSTRING2( "CCCHCommDbWatcher::RunL: error <%d>", iStatus.Int() );
+        iErrorCounter++;
+        if ( iErrorCounter > KCchConnCenRepErrorThreshold )
+            {
+            CCHLOGSTRING2( "Over %d consecutive errors, stopping notifications permanently",
+                    KCchConnCenRepErrorThreshold );
+            return;
+            }
+        }
+    else
+        {
+        iErrorCounter = 0;
+        UpdateIapTable();
+        }
+
+    CCHLOGSTRING2( "CCCHCommDbWatcher::RunL: CenRep event 0x%08X", iStatus.Int() );
+
+    TInt err( RequestNotifications() );
+    User::LeaveIfError( err );
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::DoCancel
+//
+// ---------------------------------------------------------------------------
+//
+void CCCHCommDbWatcher::DoCancel()
+    {
+    iRepository->NotifyCancel( iTableId, KCDMaskShowRecordType );
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::RunError
+//
+// ---------------------------------------------------------------------------
+//
+
+TInt CCCHCommDbWatcher::RunError( TInt /*aError*/ )
+    {
+    TInt err( RequestNotifications() );
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::CheckIapsL
+//
+// ---------------------------------------------------------------------------
+//
+void CCCHCommDbWatcher::CheckIapsL( TBool& aChanged, TInt& aSNAPId )
+	{
+    CCHLOGSTRING2( "CCCHCommDbWatcher::CheckIapsL: IN Current iap count %d",
+            CountIapsFromArray( iDestinations ) );
+
+
+  	RArray<TUint32> destIdArray = RArray<TUint32>( KDefaultGranularity );
+    CleanupClosePushL( destIdArray ); // CS:1
+  	RArray<TDestinationData> currentDestinations = RArray<TDestinationData>( 
+  		KDefaultGranularity ); 
+    CleanupClosePushL( currentDestinations );	 // CS:2
+
+    //Get count of iaps that do not belong to any destination
+    RArray<TUint32> cmMethods = RArray<TUint32>( KDefaultGranularity );
+    CleanupClosePushL( cmMethods ); // CS:3
+    CmManagerL().ConnectionMethodL( cmMethods );
+        
+    TDestinationData destinationlessIaps( KErrNotFound, cmMethods.Count() );
+    CCHLOGSTRING2( "CCCHCommDbWatcher::CheckIapsL: cmMethods count %d",
+            cmMethods.Count() );
+    for ( TInt i = 0; i < cmMethods.Count(); i++ )
+        {
+   	    RCmConnectionMethod cm = CmManagerL().ConnectionMethodL( cmMethods[ i ] );
+        CleanupClosePushL( cm ); // CS:4
+        
+        if( KUidWlanBearerType == 
+            cm.GetIntAttributeL( CMManager::ECmBearerType ) )
+            {
+            destinationlessIaps.iWlanIaps++;
+            }
+        CleanupStack::PopAndDestroy( &cm ); // CS:3
+        }
+        
+    CleanupStack::PopAndDestroy( &cmMethods ); // CS:2
+    currentDestinations.Append( destinationlessIaps ); 
+
+    //Get count of iaps per destination
+    CmManagerL().AllDestinationsL( destIdArray );
+    CCHLOGSTRING2( "CCCHCommDbWatcher::CheckIapsL: destination count %d",
+                destIdArray.Count() )
+    for ( TInt i = 0; i < destIdArray.Count(); i++ )
+        {
+        RCmDestination destination = CmManagerL().DestinationL( destIdArray[ i ] );
+        CleanupClosePushL( destination ); // CS:3
+        TDestinationData destinationInfo( 
+            destination.Id(), destination.ConnectionMethodCount() );
+		 
+         for ( TInt k = 0; k < destinationInfo.iIapCount; k++ )
+			 {
+			 RCmConnectionMethod cm = destination.ConnectionMethodL( k );
+			 CleanupClosePushL( cm ); // CS:4
+             
+			 if( KUidWlanBearerType == 
+			 	 cm.GetIntAttributeL( CMManager::ECmBearerType ) )
+				 {
+				 destinationInfo.iWlanIaps++;				 	
+				 }
+		     CleanupStack::PopAndDestroy( &cm ); // CS:3
+			 }
+            
+		 currentDestinations.Append( destinationInfo );
+		 CleanupStack::PopAndDestroy( &destination ); // CS:2
+	     }
+    
+	destIdArray.Close();
+    
+    UpdateDestinationStore( currentDestinations, aChanged, aSNAPId );
+    
+    CleanupStack::PopAndDestroy( &currentDestinations ); // CS:1
+    CleanupStack::PopAndDestroy( &destIdArray ); // CS:0
+	
+    CCHLOGSTRING2( "CCCHCommDbWatcher::CheckIapsL: OUT changed: %d", aChanged );
+	}
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::CountIapsFromArray
+//
+// ---------------------------------------------------------------------------
+//
+TInt CCCHCommDbWatcher::CountIapsFromArray( 
+    RArray<TDestinationData>& aArray ) const
+	{
+	TInt iaps = 0;
+	for ( TInt i=0; i<aArray.Count(); i++ )
+		{
+		iaps+= aArray[i].iIapCount;
+		}
+	return iaps;	
+	}
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::UpdateDestinationStore
+//
+// ---------------------------------------------------------------------------
+//
+void CCCHCommDbWatcher::UpdateDestinationStore( 
+    RArray<TDestinationData>& aDestinations,
+    TBool& aChanged,
+    TInt& aSNAPId )
+    {
+	//Now compare fetched data with store
+	TInt iapsBefore = CountIapsFromArray ( iDestinations );
+	TInt iapsAfter  = CountIapsFromArray ( aDestinations );
+
+    aSNAPId = KErrNotFound;
+    aChanged = EFalse;
+
+    //no further checking is needed if iap count decreased
+    if ( iapsAfter >= iapsBefore )
+		{
+        //compare store with current setup for changes
+        //only change in WLAN iap count is reported
+		for ( TInt i = 0; !aChanged && i < aDestinations.Count(); i++ )
+			{
+            TBool alreadyexists = EFalse;
+			for ( TInt j = 0; !aChanged && j < iDestinations.Count(); j++ )
+				{
+                if ( aDestinations[i].iDestId == iDestinations[j].iDestId )
+                    {
+                    alreadyexists = ETrue;
+                    // Do not update snap id if destination is -1, this means 
+                    // that cmmanager hasn't moved iap to the right destination yet
+                    if ( aDestinations[i].iWlanIaps > 
+                         iDestinations[j].iWlanIaps )
+					    {
+                        if ( KErrNotFound == aDestinations[ i ].iDestId )
+                            {
+                            // If destination -1 is the only updated destination
+                            // we have to use force next time when asking GetIapCountFromSnap
+                            iUseForce = ETrue;
+                            CCHLOGSTRING( "CCCHCommDbWatcher - USE THE FORCE NEXT TIME" );
+                            }
+                        else
+                            {
+                            //wlan iap count increased in comp[i]
+                            aSNAPId = aDestinations[i].iDestId;
+                            aChanged = ETrue;
+                            iUseForce = EFalse;
+                            CCHLOGSTRING2( "CCCHCommDbWatcher - snap id: %d", aSNAPId );
+                            }
+                        }
+                    }
+				}
+                
+            //if there is a new SNAP, check wlan iap count in the new IAP
+            if ( !alreadyexists && aDestinations[i].iWlanIaps > 0 )
+                {
+                aSNAPId = aDestinations[i].iDestId;
+                aChanged = ETrue;
+                CCHLOGSTRING2( "CCCHCommDbWatcher new snap id: %d", aSNAPId );
+                }
+			}
+		}
+		
+	//update store
+	iDestinations.Reset();
+	for ( TInt i=0; i < aDestinations.Count(); i++ )
+		{
+		iDestinations.Append( aDestinations[i] );					
+        // Destinations are refreshed, set last error to kerrnone
+        iLastError = KErrNone;
+		}
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::UpdateIapTable
+//
+// ---------------------------------------------------------------------------
+//
+TInt CCCHCommDbWatcher::UpdateIapTable()
+    {
+    TBool configurationChanged( EFalse );
+    TInt changedSnapId( KErrNotFound );
+    TInt error( KErrNone );
+    TRAP( error, CheckIapsL( configurationChanged, changedSnapId ) );
+            
+    if ( error == KErrNone )
+        {
+        if( configurationChanged )
+            {
+            // new IAP(s) added, notify observer
+            iObserver.HandleWLANIapAdded( changedSnapId );
+            }
+        }
+    
+    CCHLOGSTRING2( "CCCHCommDbWatcher::UpdateIapTable: CActive iStatus : %d", iStatus.Int() );
+    return error;
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::InitializeDestination
+//
+// ---------------------------------------------------------------------------
+//
+void CCCHCommDbWatcher::InitializeDestination()
+    {
+    //call CheckWLANIapsL to get initial iap/snap list to array 
+    //we're not interested in the return value at this point
+    TBool configurationChanged( EFalse );
+    TInt changedSnapId( 0 );
+    // Loop, because transaction might pend and error(KErrLocked) may occur
+    TInt error( KErrNone );
+    for ( TInt i( 0 ); i < KMaxCheckAttempts; i++ )
+        {
+        TRAP( error, CheckIapsL( configurationChanged, changedSnapId ) ); 
+        CCHLOGSTRING2( 
+            "CCCHCommDbWatcher::InitializeDestination; error: %d", error );
+        if( KErrNone == error || KErrNotFound == error )
+            {
+            break;
+            }
+        }
+        
+    if( error )
+        {
+        iLastError = error;
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// CCCHCommsDbWatcher::RemoveOtherThanVpnIapsL
+//
+// ---------------------------------------------------------------------------
+//
+void CCCHCommDbWatcher::RemoveOtherThanVpnIapsL(
+    RArray<TUint>& aIapIds,
+    TUint aIAPId )
+    {
+    CCHLOGSTRING2( "CCCHCommDbWatcher::RemoveOtherThanVpnIapsL; IAP ID:  %d", aIAPId );
+    CCHLOGSTRING2( "CCCHCommDbWatcher::RemoveOtherThanVpnIapsL; IAPs count before: %d", aIapIds.Count() );
+    
+    TUint32 iapId( KErrNone );
+    RArray<TUint> iaps;
+    CleanupClosePushL( iaps );
+    RCmConnectionMethod cm = CmManagerL().ConnectionMethodL( aIAPId );
+    CleanupClosePushL( cm );
+	
+    TUint32 realIap( cm.GetIntAttributeL( CMManager::ECmNextLayerIapId ) );
+    CCHLOGSTRING2( "CCCHCommDbWatcher::RemoveOtherThanVpnIapsL: real iap  %d ", realIap );
+    TUint32 realSnap( cm.GetIntAttributeL( CMManager::ECmNextLayerSNAPId ) );
+    CCHLOGSTRING2( "CCCHCommDbWatcher::RemoveOtherThanVpnIapsL: real snap %d", realSnap );
+            
+    if ( realIap )
+        {
+        CCHLOGSTRING( "CCCHCommDbWatcher::RemoveOtherThanVpnIapsL: VPN linked to IAP" );
+        
+        if ( KErrNotFound != aIapIds.Find( realIap ) )
+            {
+            iaps.Append( realIap );
+            }
+        }
+    else
+        {
+        CCHLOGSTRING( "CCCHCommDbWatcher::RemoveOtherThanVpnIapsL: VPN linked to SNAP" );
+        
+        RCmDestination realDestination = CmManagerL().DestinationL( realSnap );
+        CleanupClosePushL( realDestination );
+        
+        for ( TInt i = 0; i < realDestination.ConnectionMethodCount(); i++ )
+            {
+            RCmConnectionMethod realCm = realDestination.ConnectionMethodL( i );
+            CleanupClosePushL( realCm );
+            iapId = realCm.GetIntAttributeL( CMManager::ECmIapId );
+        
+            if ( KErrNotFound != aIapIds.Find( iapId ) )
+                {
+                iaps.Append( iapId );
+                }
+            
+            CleanupStack::PopAndDestroy( &realCm );
+            }
+        
+        CleanupStack::PopAndDestroy( &realDestination );
+        }
+            
+    aIapIds.Reset();
+    for ( TInt j( 0 ); j < iaps.Count(); j++ )
+        {
+        aIapIds.Append( iaps[ j ] );
+        }
+    
+    CleanupStack::PopAndDestroy( &cm );
+    CleanupStack::PopAndDestroy( &iaps ); 
+    
+    CCHLOGSTRING2( "CCCHCommDbWatcher::RemoveOtherThanVpnIapsL; IAPs count after:  %d", aIapIds.Count() );
+    }
+    
+// ========================== OTHER EXPORTED FUNCTIONS =======================
+
+//  End of File