author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 23 Jun 2010 18:23:52 +0300 | |
changeset 40 | 997690c3397a |
parent 33 | 837dcc42fd6a |
permissions | -rw-r--r-- |
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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 "btnotifsecuritymanager.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 = CBTNotifSecurityManager::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::HandleNotifierRequestL( const RMessage2& aMessage ) |
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{ |
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BOstraceFunctionEntryExt ( DUMMY_LIST, this, aMessage.Function() ); |
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iPairingManager->HandleNotifierRequestL(aMessage); |
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BOstraceFunctionExit1( DUMMY_DEVLIST, this ); |
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} |
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108 |
|
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109 |
// --------------------------------------------------------------------------- |
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110 |
// Handle a request related to pairing. |
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// --------------------------------------------------------------------------- |
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112 |
// |
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void CBTNotifConnectionTracker::HandleBondingRequestL( const RMessage2& aMessage ) |
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114 |
{ |
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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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119 |
|
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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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124 |
// |
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TBool CBTNotifConnectionTracker::UpdateBlockingHistoryL( const CBTDevice* aDevice, |
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TBool aAccepted ) |
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127 |
{ |
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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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134 |
{ |
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if( pos == KErrNotFound ) |
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136 |
{ |
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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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157 |
|
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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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171 |
{ |
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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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175 |
{ |
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if( prev <= KDENYTHRESHOLD ) |
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177 |
{ |
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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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192 |