diff -r 000000000000 -r c40eb8fe8501 wlan_bearer/wlanengine/wlan_symbian/wlanengine_symbian_3.1/src/wlansystemtimehandler.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wlan_bearer/wlanengine/wlan_symbian/wlanengine_symbian_3.1/src/wlansystemtimehandler.cpp	Tue Feb 02 02:03:13 2010 +0200
@@ -0,0 +1,316 @@
+/*
+* Copyright (c) 2002-2010 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "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:  Active object to get notification of system time change.
+*
+*/
+
+/*
+* %version: 3 %
+*/
+
+// INCLUDE FILES
+#include <e32std.h>
+#include "wlansystemtimehandler.h"
+#include "am_debug.h"
+
+/** 
+ * Region cache should expire after 5 hours and therefore
+ * 30 min timer is set 10 times 
+ */
+const TInt KRegionCacheClearingTimer = 1800*1000000;  // 30 min
+const TInt KRegionCacheClearingTimerCount = 10;
+/** 
+ * Two year timeout used to receive notification about system time change 
+ */
+const TInt KWlanSystemTimeHandlerTimeoutTwoYears = 2;
+
+#ifdef _DEBUG
+/**
+ * Formatting of date time debug string.
+ */
+_LIT( KWlanSystemTimeHandlerDateTimeFormat, "%F %*E %*N %Y %H:%T:%S" );
+
+/**
+ * Maximun length for date time debug string.
+ */
+const TInt KWlanSystemTimeHandlerMaxDateTimeStrLen = 50;
+#endif
+
+// ================= MEMBER FUNCTIONS =======================
+
+// C++ default constructor can NOT contain any code, that
+// might leave.
+//
+CWlanSystemTimeHandler::CWlanSystemTimeHandler(
+    MWlanSystemTimeCallback& aClient ) :
+    CActive( CActive::EPriorityStandard ),
+    iClient( aClient )
+    {
+    DEBUG( "CWlanSystemTimeHandler::CWlanSystemTimeHandler()" );
+    }
+
+// Static constructor.
+CWlanSystemTimeHandler* CWlanSystemTimeHandler::NewL(
+    MWlanSystemTimeCallback& aClient)
+    {
+    DEBUG( "CWlanSystemTimeHandler::NewL()" );
+    CWlanSystemTimeHandler* self =
+        new (ELeave) CWlanSystemTimeHandler( aClient );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// Symbian 2nd phase constructor can leave.
+void CWlanSystemTimeHandler::ConstructL()
+    {
+    DEBUG( "CWlanSystemTimeHandler::ConstructL()" );
+
+    CActiveScheduler::Add( this );
+    User::LeaveIfError( iTimer.CreateLocal() );
+    }
+
+// Destructor
+CWlanSystemTimeHandler::~CWlanSystemTimeHandler()
+    {
+    DEBUG( "CWlanSystemTimeHandler::~CWlanSystemTimeHandler()" );
+
+    Cancel();
+    iTimer.Close();
+    }
+
+// ---------------------------------------------------------
+// CWlanSystemTimeHandler::DoCancel
+// Release synchronise call. Is called by CActive::Cancel()
+// ---------------------------------------------------------
+//
+void CWlanSystemTimeHandler::DoCancel()
+    {
+    DEBUG( "CWlanSystemTimeHandler::DoCancel()" );
+    iTimer.Cancel();
+    }
+
+// ---------------------------------------------------------
+// CWlanSystemTimeHandler::StartTimer
+// ---------------------------------------------------------
+//
+TInt CWlanSystemTimeHandler::StartTimer()
+    {
+    TTime timeout;
+    timeout.HomeTime();
+    timeout += TTimeIntervalYears( KWlanSystemTimeHandlerTimeoutTwoYears );
+    
+    /**
+     * Set timeout to two years from now, just to receive notification when
+     * system time changes.
+     */ 
+    iTimer.At(iStatus, timeout );
+     
+    SetActive();
+    
+#ifdef _DEBUG
+    TBuf<KWlanSystemTimeHandlerMaxDateTimeStrLen> timeoutAt;
+    TRAP_IGNORE( timeout.FormatL( timeoutAt, KWlanSystemTimeHandlerDateTimeFormat ) );
+    DEBUG1( "CWlanSystemTimeHandler::Start() - system time change notification timer started, timeout at: %S", &timeoutAt );
+#endif
+    
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------
+// CWlanSystemTimeHandler::StopTimer   
+// ---------------------------------------------------------
+//
+void CWlanSystemTimeHandler::StopTimer()
+    {
+    DEBUG( "CWlanSystemTimeHandler::StopTimer()" );
+    Cancel();
+    }    
+
+// ---------------------------------------------------------
+// CWlanSystemTimeHandler::RunL
+// ---------------------------------------------------------
+//
+void CWlanSystemTimeHandler::RunL()
+    {
+    DEBUG1( "CWlanSystemTimeHandler::RunL() - iStatus: %d", iStatus.Int() );
+
+    switch( iStatus.Int() )
+        {
+        case KErrAbort:
+            {
+            DEBUG( "CWlanSystemTimeHandler::RunL() - system time changed, informing client" );
+            /**
+             * RTimer is aborted when system time changes.
+             * 
+             * Inform client that system time has now been changed. 
+             */
+            iClient.OnSystemTimeChange();
+            }
+        case KErrNone: // flow through from KErrAbort on purpose
+            {
+            Cancel();
+
+            TTime newTimeout;
+            newTimeout.HomeTime();
+            newTimeout +=  TTimeIntervalYears( KWlanSystemTimeHandlerTimeoutTwoYears );
+            
+            /**
+             * Set new timeout to two years from now, just to receive notification when
+             * system time changes next time.
+             */ 
+            iTimer.At( iStatus, newTimeout );
+             
+            SetActive();
+            
+#ifdef _DEBUG
+            TBuf<KWlanSystemTimeHandlerMaxDateTimeStrLen> timeoutAt;
+            TRAP_IGNORE( newTimeout.FormatL( timeoutAt, KWlanSystemTimeHandlerDateTimeFormat ) );
+            DEBUG1( "CWlanSystemTimeHandler::RunL() - system time change notification timer restarted, timeout at: %S", &timeoutAt );
+#endif
+            
+            break;
+            }
+        default:
+            {
+            DEBUG( "CWlanSystemTimeHandler::RunL() - ERROR: problem setting up system time change notifications, notifications are now disabled" );
+            Cancel();
+            }
+        }
+    }
+
+// ================= MEMBER FUNCTIONS =======================
+
+// C++ default constructor can NOT contain any code, that
+// might leave.
+//
+CWlanPeriodicCacheClearingHandler::CWlanPeriodicCacheClearingHandler(
+    MWlanSystemTimeCallback& aClient ) :
+    CActive( CActive::EPriorityStandard ),
+    iClearTimerCounter( 0 ),
+    iClient( aClient )
+    {
+    DEBUG( "CWlanPeriodicCacheClearingHandler::CWlanPeriodicCacheClearingHandler()" );
+    }
+
+// Static constructor.
+CWlanPeriodicCacheClearingHandler* CWlanPeriodicCacheClearingHandler::NewL(
+    MWlanSystemTimeCallback& aClient)
+    {
+    DEBUG( "CWlanPeriodicCacheClearingHandler::NewL()" );
+    CWlanPeriodicCacheClearingHandler* self =
+        new (ELeave) CWlanPeriodicCacheClearingHandler( aClient );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// Symbian 2nd phase constructor can leave.
+void CWlanPeriodicCacheClearingHandler::ConstructL()
+    {
+    DEBUG( "CWlanPeriodicCacheClearingHandler::ConstructL()" );
+
+    CActiveScheduler::Add( this );
+    User::LeaveIfError( iClearTimer.CreateLocal() );
+    }
+
+// Destructor
+CWlanPeriodicCacheClearingHandler::~CWlanPeriodicCacheClearingHandler()
+    {
+    DEBUG( "CWlanPeriodicCacheClearingHandler::~CWlanPeriodicCacheClearingHandler()" );
+
+    Cancel();
+    iClearTimer.Close();
+    }
+
+// ---------------------------------------------------------
+// CWlanPeriodicCacheClearingHandler::DoCancel
+// Release synchronise call. Is called by CActive::Cancel()
+// ---------------------------------------------------------
+//
+void CWlanPeriodicCacheClearingHandler::DoCancel()
+    {
+    DEBUG( "CWlanPeriodicCacheClearingHandler::DoCancel()" );
+    iClearTimer.Cancel();
+    }
+
+// ---------------------------------------------------------
+// CWlanPeriodicCacheClearingHandler::StartTimer
+// ---------------------------------------------------------
+//
+TInt CWlanPeriodicCacheClearingHandler::StartTimer()
+    {
+    DEBUG( "CWlanPeriodicCacheClearingHandler::StartTimer()" );
+    
+    // Issue an Asynchronous Request
+    iClearTimer.After(iStatus, KRegionCacheClearingTimer);
+     
+    // set it to active once request is issued
+    SetActive();
+    
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------
+// CWlanPeriodicCacheClearingHandler::StopTimer   
+// ---------------------------------------------------------
+//
+void CWlanPeriodicCacheClearingHandler::StopTimer()
+    {
+    DEBUG( "CWlanPeriodicCacheClearingHandler::StopTimer()" );
+    Cancel();
+    iClearTimerCounter = 0;
+    }    
+
+// ---------------------------------------------------------
+// CWlanPeriodicCacheClearingHandler::RunL
+// Timer has expired. 
+// ---------------------------------------------------------
+//
+void CWlanPeriodicCacheClearingHandler::RunL()
+    {
+    DEBUG( "CWlanPeriodicCacheClearingHandler::RunL()" );
+
+    // This is the case when system time is changed and
+    // hence will cause the timer to abort with KErrAbort.
+
+	if( iStatus.Int() == KErrNone && 
+	    iClearTimerCounter < KRegionCacheClearingTimerCount-1) 
+        {
+        iClearTimerCounter += 1;
+        
+        // Issue an Asynchronous Request
+        iClearTimer.After(iStatus, KRegionCacheClearingTimer);
+     
+        // set it to active once request is issued
+        SetActive();
+
+        }
+    else if ( iStatus.Int() == KErrNone && 
+	          iClearTimerCounter >= KRegionCacheClearingTimerCount-1 ) 
+        {
+    	/* Inform client that system time has been changed so that
+         * region information cache can be cleared. 
+         */
+        iClient.OnCacheClearTimerExpiration();
+        iClearTimerCounter = 0;
+        }
+	else
+	    {
+	    DEBUG( "CWlanPeriodicCacheClearingHandler::RunL() - time expired" );
+	    }	
+    }
+