--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/convergedconnectionhandler/cchserver/src/cchwlanextension.cpp	Mon Jan 18 20:12:36 2010 +0200
@@ -0,0 +1,279 @@
+/*
+* 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: 
+*        class implementation for CCchWlanExtension
+*
+*/
+
+
+// INCLUDE FILES
+#include "cchwlanextension.h"
+#include "cchprivatecrkeys.h"
+#include "cchlogger.h"
+
+#include <centralrepository.h>
+#include <wlanmgmtclient.h>
+#include <StringLoader.h>
+#include <WlanCdbCols.h>
+
+// CONSTANTS
+
+const TUint32 KWlanScanRateDeactive = 0;    //scan not active
+const TUint32 KWlanScanRateActive   = 300;  //value used when cch activates 1st scan
+
+const TInt KRetryTimeout( 100000 ); // 0,1s delay for comms db begintransaction retry (microseconds)
+const TInt KRetryCount( 6 );      // Maximum number of retries
+
+
+// ============================ MEMBER FUNCTIONS =============================
+
+// ---------------------------------------------------------------------------
+// CCchWlanExtension::NewL()
+// Symbian OS two-phased constructor
+// ---------------------------------------------------------------------------
+CCchWlanExtension* CCchWlanExtension::NewL( )
+    {
+    CCchWlanExtension* self = new( ELeave ) CCchWlanExtension( );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// CCchWlanExtension::ConstructL()
+// Symbian OS two-phased constructor
+// ---------------------------------------------------------------------------
+void CCchWlanExtension::ConstructL()
+    {
+    CCHLOGSTRING2( "CCchWlanExtension::ConstructL[0x%x]: IN", this );
+    // Create connection to the Access Points setting data.
+    iAPCommsDatabase = CCommsDatabase::NewL( EDatabaseTypeIAP );
+    
+    // Create connection to the WLAN setting data.
+    iWLANCommsDatabase = CCommsDatabase::NewL();
+    
+    iCchRepository = CRepository::NewL( KCRUidCch );
+    CCHLOGSTRING( "CCchWlanExtension::ConstructL: OUT" );
+    }
+
+// ---------------------------------------------------------------------------
+// CCchWlanExtension::CCchWlanExtension()
+// Constructor.
+// ---------------------------------------------------------------------------
+CCchWlanExtension::CCchWlanExtension( ) :
+	iLastSavedScanInterval( 0 )
+    {
+    }
+
+// ---------------------------------------------------------------------------
+// CGSUiVoIPExtension::~CCchWlanExtension()
+// Destructor.
+// ---------------------------------------------------------------------------
+CCchWlanExtension::~CCchWlanExtension()
+    {
+    delete iWLANCommsDatabase;
+    delete iAPCommsDatabase;
+    delete iCchRepository;
+    }
+
+// ---------------------------------------------------------------------------
+// CCchWlanExtension::ForceEnableWlanScanL
+// ---------------------------------------------------------------------------
+void CCchWlanExtension::ForceEnableWlanScanL()
+    {
+    CCHLOGSTRING( "CCchWlanExtension::ForceEnableWlanScanL: IN" );    
+    TInt scanRate = CheckAvailabilityStatusL();
+    if( KWlanScanRateDeactive != scanRate )
+        {
+        CCHLOGSTRING( "CCchWlanExtension::Forced to disable/enable wlan scan" ); 
+        SetAvailabilitySwitchL( KWlanScanRateDeactive );    
+        SetAvailabilitySwitchL( iLastSavedScanInterval );  
+        }
+    else
+        {
+        CCHLOGSTRING( "CCchWlanExtension::Normal wlan scan enable" ); 
+        EnableWlanScanL();
+        }
+    
+    CCHLOGSTRING( "CCchWlanExtension::ForceEnableWlanScanL: OUT" );    
+    }
+
+// ---------------------------------------------------------------------------
+// CCchWlanExtension::EnableWlanScanL
+// ---------------------------------------------------------------------------
+void CCchWlanExtension::EnableWlanScanL()
+    {
+    CCHLOGSTRING( "CCchWlanExtension::EnableWlanScanL: IN" );
+    TInt err( KErrNone );
+    TInt wlanActivation( 0 );
+    err = iCchRepository->Get( 
+             KCCHWasWlanScanActivatedBeforeServiceEnabling, 
+             wlanActivation );
+    User::LeaveIfError( err );
+    TInt scanRate = CheckAvailabilityStatusL();
+    // Activate the WLAN scan setting if needed.
+    if( KErrNone == err )
+        {
+        if( ECCHWlanScanNotDefined == wlanActivation )
+            {
+            if( KWlanScanRateDeactive < scanRate )    
+                {
+                iCchRepository->Set( KCCHWasWlanScanActivatedBeforeServiceEnabling, 
+                                     ECCHWlanScanWasEnabled );    
+                CCHLOGSTRING( "CCchWlanExtension::EnableWlanScanL; scan was enabled by user" );
+                }
+            else
+                {
+                iCchRepository->Set( KCCHWasWlanScanActivatedBeforeServiceEnabling, 
+                                     ECCHWlanScanWasNotEnabled );    
+                
+                CCHLOGSTRING( "CCchWlanExtension::EnableWlanScanL; scan was enabled by CCH" );
+                }
+            }
+        }
+    if( KWlanScanRateDeactive == scanRate )    
+        {
+        SetAvailabilitySwitchL( iLastSavedScanInterval );            
+        }
+
+    CCHLOGSTRING( "CCchWlanExtension::EnableWlanScanL: OUT" );
+    }
+// ---------------------------------------------------------------------------
+// CCchWlanExtension::DisableWlanScanL
+// ---------------------------------------------------------------------------
+void CCchWlanExtension::DisableWlanScanL()    
+    {
+    CCHLOGSTRING( "CCchWlanExtension::DisableWlanScanL: IN" );
+    // Deactivate the WLAN scan setting if needed.    
+    TInt err( KErrNone );
+    TInt wlanActivation( 0 );
+    err = iCchRepository->Get( 
+             KCCHWasWlanScanActivatedBeforeServiceEnabling, 
+             wlanActivation );
+    User::LeaveIfError( err );
+    TInt scanRate = CheckAvailabilityStatusL();             
+    CCHLOGSTRING2( "CCchWlanExtension::DisableWlanScanL: ERROR:%d", err );
+    if( KErrNone == err )
+        {
+        CCHLOGSTRING2( "CCchWlanExtension::DisableWlanScanL: activation:%d", wlanActivation );
+        if ( KWlanScanRateDeactive < scanRate )
+            {
+            CCHLOGSTRING( "CCchWlanExtension::DisableWlanScanL: scan is active" );
+            if( ECCHWlanScanNotDefined != wlanActivation )
+                {
+                if( ECCHWlanScanWasNotEnabled == wlanActivation )
+                    {
+                    CCHLOGSTRING( "CCchWlanExtension::DisableWlanScanL: disabling wlan scan" );
+                    SetAvailabilitySwitchL( KWlanScanRateDeactive );                        
+                    }
+                err = iCchRepository->Set( KCCHWasWlanScanActivatedBeforeServiceEnabling, 
+                                     ECCHWlanScanNotDefined );    
+                User::LeaveIfError( err );
+                }
+            }            
+        }
+    CCHLOGSTRING( "CCchWlanExtension::DisableWlanScanL: OUT" );
+    }
+
+// ---------------------------------------------------------------------------
+// CCchWlanExtension::CheckAvailabilityStatusL
+// Checks WLAN availability setting status.
+// ---------------------------------------------------------------------------
+//
+TUint32 CCchWlanExtension::CheckAvailabilityStatusL()
+	{
+	CCHLOGSTRING( "CCchWlanExtension::CheckAvailabilityStatusL: IN" );
+    TUint32 scanRate( KErrNone );
+    // Open WLAN setting table and get availability data.
+    CCommsDbTableView* view = 
+        iWLANCommsDatabase->OpenViewMatchingUintLC
+            (
+            TPtrC( WLAN_DEVICE_SETTINGS ),
+            TPtrC( WLAN_DEVICE_SETTINGS_TYPE ),
+            KWlanUserSettings
+            );
+    
+    User::LeaveIfError( view->GotoFirstRecord() );
+    view->ReadUintL( TPtrC( WLAN_BG_SCAN_INTERVAL ), scanRate );
+    //ignore leave if there is no such column WLAN_SAVED_BG_SCAN_INTERVAL
+    TRAP_IGNORE( view->ReadUintL( TPtrC( WLAN_SAVED_BG_SCAN_INTERVAL ), 
+    							  iLastSavedScanInterval ) );
+    
+    if( 0 == iLastSavedScanInterval )
+    	{
+    	iLastSavedScanInterval = KWlanScanRateActive;
+    	}
+    CCHLOGSTRING3( 
+    	"CCchWlanExtension::CheckAvailabilityStatusL: interval: %d, saved: %d", 
+    	scanRate, iLastSavedScanInterval );
+    CleanupStack::PopAndDestroy( view );
+    CCHLOGSTRING( "CCchWlanExtension::CheckAvailabilityStatusL: OUT" );
+    // Return scan rate value.
+    return scanRate;
+	}
+
+// -----------------------------------------------------------------------------
+// CCchWlanExtension::SetAvailabilitySwitchL
+// Sets WLAN availability switch based on scan rate given.
+// -----------------------------------------------------------------------------
+void CCchWlanExtension::SetAvailabilitySwitchL( TUint32 aScanRate )
+    {
+    CCHLOGSTRING( "CCchWlanExtension::SetAvailabilitySwitchL: IN" );
+    // Open WLAN setting table and record.
+    CCommsDbTableView* view = iWLANCommsDatabase->OpenViewMatchingUintLC
+        (
+        TPtrC( WLAN_DEVICE_SETTINGS ),
+        TPtrC( WLAN_DEVICE_SETTINGS_TYPE ),
+        KWlanUserSettings
+        );
+        
+    User::LeaveIfError( view->GotoFirstRecord() );
+    User::LeaveIfError( view->UpdateRecord() );
+
+    // Set new WLAN availability setting value to comms database.
+    view->WriteUintL( TPtrC( WLAN_BG_SCAN_INTERVAL ), aScanRate );
+    
+    TInt round( 0 );
+    TInt err( KErrNone );
+       do
+           {
+           // Complete transaction procedure.
+           err = view->PutRecordChanges();
+
+           if ( KErrNone != err )
+               {
+               User::After( round * KRetryTimeout );
+               round++;
+               }
+           }
+       while ( KErrNone != err && round < KRetryCount);
+          
+     if ( KErrNone != err  )
+        {
+        CCHLOGSTRING( "CCchWlanExtension::SetAvailabilitySwitchL: PutRecordChanges was unsuccessful" );
+        User::Leave( err );
+        }
+    
+    CleanupStack::PopAndDestroy( view );
+    
+    // Notifying WLAN Engine about changes in settings.
+    CWlanMgmtClient* wlanMgmtClient = CWlanMgmtClient::NewL();
+    wlanMgmtClient->NotifyChangedSettings();
+    delete wlanMgmtClient;
+    CCHLOGSTRING( "CCchWlanExtension::SetAvailabilitySwitchL: OUT" );
+    }
+    
+// End of file