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/*
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: Bluetooth connection tracker and manager.
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*
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*/
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#include "btnotifconnectiontracker.h"
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#include <btextnotifiers.h>
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#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS
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#include <btextnotifierspartner.h>
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#endif
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#include <btservices/btdevextension.h>
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#include <btservices/btdevrepository.h>
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#include "btnotifsession.h"
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#include "btnotifclientserver.h"
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#include "bluetoothtrace.h"
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#include "btnotifpairingmanager.h"
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/** Time window for determining if there are too many requests. */
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#ifndef __WINS__
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#define KDENYTHRESHOLD TTimeIntervalSeconds(3)
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#else //__WINS__
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#define KDENYTHRESHOLD TTimeIntervalSeconds(5)
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#endif //__WINS__
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// ======== LOCAL FUNCTIONS ========
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// ======== MEMBER FUNCTIONS ========
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// ---------------------------------------------------------------------------
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// C++ default constructor
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// ---------------------------------------------------------------------------
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//
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CBTNotifConnectionTracker::CBTNotifConnectionTracker( CBTNotifServer* aServer )
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: iServer( aServer )
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{
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}
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// ---------------------------------------------------------------------------
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// Symbian 2nd-phase constructor
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// ---------------------------------------------------------------------------
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//
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void CBTNotifConnectionTracker::ConstructL()
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{
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BOstraceFunctionEntry0( DUMMY_DEVLIST );
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// Open a handle to the registry server
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User::LeaveIfError( iBTRegistrySession.Connect() );
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// Open a handle to the socket server
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User::LeaveIfError( iSockServ.Connect() );
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iPairingManager = CBTNotifPairingManager::NewL(*this, iServer->DevRepository() );
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BOstraceFunctionExit0( DUMMY_DEVLIST );
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}
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// ---------------------------------------------------------------------------
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// NewL.
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// ---------------------------------------------------------------------------
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//
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CBTNotifConnectionTracker* CBTNotifConnectionTracker::NewL( CBTNotifServer* aServer )
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{
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CBTNotifConnectionTracker* self = new( ELeave ) CBTNotifConnectionTracker( aServer );
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CleanupStack::PushL( self );
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self->ConstructL();
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CleanupStack::Pop( self );
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return self;
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}
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// ---------------------------------------------------------------------------
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// Destructor
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// ---------------------------------------------------------------------------
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//
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CBTNotifConnectionTracker::~CBTNotifConnectionTracker()
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{
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BOstraceFunctionEntry0( DUMMY_DEVLIST );
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iDeniedRequests.Close();
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delete iPairingManager;
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iSockServ.Close();
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iBTRegistrySession.Close();
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BOstraceFunctionExit0( DUMMY_DEVLIST );
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}
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// ---------------------------------------------------------------------------
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// Process notifier message related to pairing notifiers.
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// ---------------------------------------------------------------------------
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//
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void CBTNotifConnectionTracker::HandlePairingNotifierRequestL( const RMessage2& aMessage )
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{
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BOstraceFunctionEntryExt ( DUMMY_LIST, this, aMessage.Function() );
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iPairingManager->HandlePairingNotifierRequestL(aMessage);
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BOstraceFunctionExit1( DUMMY_DEVLIST, this );
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}
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// ---------------------------------------------------------------------------
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// Handle a request related to pairing.
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// ---------------------------------------------------------------------------
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//
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void CBTNotifConnectionTracker::HandleBondingRequestL( const RMessage2& aMessage )
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{
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BOstraceFunctionEntryExt ( DUMMY_LIST, this, aMessage.Function() );
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iPairingManager->HandleBondingRequestL(aMessage);
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BOstraceFunctionExit1( DUMMY_DEVLIST, this );
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}
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// ---------------------------------------------------------------------------
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// Check if this device has been denied a connection already before.
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// Also check if a previous connection attempt has just been rejected.
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// ---------------------------------------------------------------------------
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//
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TBool CBTNotifConnectionTracker::UpdateBlockingHistoryL( const CBTDevice* aDevice,
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TBool aAccepted )
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{
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BOstraceFunctionEntry0( DUMMY_DEVLIST );
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__ASSERT_ALWAYS( aDevice, PanicServer( EBTNotifPanicBadArgument ) );
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// Check the time since the previous event.
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TBool result = RecordConnectionAttempts( aAccepted );
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TInt pos = iDeniedRequests.Find( aDevice->BDAddr() );
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if( !aAccepted )
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{
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if( pos == KErrNotFound )
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{
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// The user denied the request from a new device, record the device address.
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if( aDevice->IsValidPaired() && aDevice->IsPaired() )
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//[MCL]: && iDevice->LinkKeyType() != ELinkKeyUnauthenticatedUpgradable )
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{
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// Paired devices are allowed one time rejection without a prompt for blocking.
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result = EFalse;
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}
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iDeniedRequests.AppendL( aDevice->BDAddr() );
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}
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// Nothing needed here if the address is already in the array.
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}
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else if( pos > KErrNotFound )
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{
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// The user accepted a request, and it was from a device he/she
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// previously rejected. Clear the history for this device from the array.
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iDeniedRequests.Remove( pos );
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}
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BOstraceFunctionExit0( DUMMY_DEVLIST );
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return result;
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}
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// ---------------------------------------------------------------------------
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// Record and check the time between connection attempts.
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// ---------------------------------------------------------------------------
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//
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TBool CBTNotifConnectionTracker::RecordConnectionAttempts( TBool aAccepted )
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{
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BOstraceFunctionEntry1( DUMMY_DEVLIST, this );
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TBool result = ETrue;
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TTime now( 0 );
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if( !aAccepted )
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{
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now.UniversalTime();
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if( iLastReject )
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{
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// Check the time between denied connections, that it does not go too fast.
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TTimeIntervalSeconds prev( 0 );
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if( !now.SecondsFrom( TTime( iLastReject ), prev ) )
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{
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if( prev <= KDENYTHRESHOLD )
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{
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// We are getting the requests too fast. Present the user with
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// an option to turn BT off.
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//iServer->SettingsTracker()->SetPower( EFalse );
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result = EFalse;
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}
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}
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}
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}
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// Record the current timestamp.
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// It is reset in case the user accepted the request.
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iLastReject = now.Int64();
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BOstraceFunctionExitExt( DUMMY_DEVLIST, this, result );
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return result;
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}
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