/*
* Copyright (c) 2002 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: Declares Bluetooth notifiers base class.
*
*/
// INCLUDE FILES
#include <centralrepository.h>
#include <CoreApplicationUIsSDKCRKeys.h>
#include <settingsinternalcrkeys.h>
#include <e32property.h>
#include <btengsettings.h>
#include <btengprivatecrkeys.h>
#include <btengconnman.h>
#include <btengutil.h>
#include <StringLoader.h> // Localisation stringloader
#include <BTNotif.rsg> // Own resources
#include <featmgr.h> // Feature Manager API
#include <utf.h> // CnvUtfConverter
#include <bluetoothuiutil.h>
#include "btnotifier.h" // Own class definition
#include "btNotifDebug.h" // Debugging macros
#include "btnotiflock.h"
#include "btnotif.hrh" // define MaxNameLength
#include "btnotifpanic.h"
#include "btnotifnameutils.h"
#ifdef __SERIES60_HELP
#include <hlplch.h>
#include <csxhelp/bt.hlp.hrh> // The bt hrh info is needed, for help launching
#endif
// CONSTANTS
const TInt KBTNAutolockEnabled = 1;
// The following definitions are used to implement checking of connection/pairing
// request frequency
// if a new connection is made quicker than CONNECT_ADD_TIME after the old one,
// then the saved time is added with CONNECT_ADD_TIME.
#define CONNECT_ADD_TIME TTimeIntervalSeconds(10)
// if the saved time is later than now+DENY_THRESHOLD, start rejecting incoming connections
// from unpaired devices.
#define DENY_THRESHOLD TTimeIntervalSeconds(30)
// if the user denies incoming connection the saved time goes this much in the future.
#define REJECT_ADD_TIME TTimeIntervalSeconds(31)
// ================= MEMBER FUNCTIONS =======================
// ----------------------------------------------------------
// CBTNotifierBase::CBTNotifierBase
// C++ default constructor can NOT contain any code, that
// might leave. Sets the AOs priority and puts
// itself to the active scheduler stack.
// ----------------------------------------------------------
//
CBTNotifierBase::CBTNotifierBase()
{
}
// ----------------------------------------------------------
// CBTNotifierBase::ConstructL
// Symbian 2nd phase constructor can leave.
// Create registry object and open resource file.
// ----------------------------------------------------------
//
void CBTNotifierBase::ConstructL()
{
// Sets up TLS, must be done before FeatureManager is used.
FeatureManager::InitializeLibL();
iIsCoverUI = ( FeatureManager::FeatureSupported( KFeatureIdCoverDisplay ) )
? ETrue : EFalse;
// Frees the TLS. Must be done after FeatureManager is used.
FeatureManager::UnInitializeLib();
iBTEngSettings = CBTEngSettings::NewL();
iDevMan = CBTEngDevMan::NewL( this );
iNotifUiUtil = CBTNotifUIUtil::NewL( iIsCoverUI );
}
// ----------------------------------------------------------
// Destructor.
// ----------------------------------------------------------
//
CBTNotifierBase::~CBTNotifierBase()
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::~CBTNotifierBase()"));
Cancel();
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::~CBTNotifierBase() -- Done"));
}
// ----------------------------------------------------------
// CBTNotifierBase::Release
// Release itself. Call to destructor.
// ----------------------------------------------------------
//
void CBTNotifierBase::Release()
{
delete this;
}
// ----------------------------------------------------------
// CBTNotifierBase::Info
// Return registered information.
// ----------------------------------------------------------
//
CBTNotifierBase::TNotifierInfo CBTNotifierBase::Info() const
{
return iInfo;
}
// ----------------------------------------------------------
// CBTNotifierBase::StartL
// Synchronic notifier launch. Does nothing here.
// ----------------------------------------------------------
//
TPtrC8 CBTNotifierBase::StartL(const TDesC8& /*aBuffer*/)
{
TPtrC8 ret(KNullDesC8);
return (ret);
}
// ----------------------------------------------------------
// CBTNotifierBase::StartL
// Asynchronic notifier launch.
// ----------------------------------------------------------
//
void CBTNotifierBase::StartL(const TDesC8& aBuffer, TInt aReplySlot, const RMessagePtr2& aMessage)
{
if( !iNotifUiUtil )
{
iNotifUiUtil = CBTNotifUIUtil::NewL( iIsCoverUI );
}
TRAPD(err, GetParamsL(aBuffer, aReplySlot, aMessage));
if (err)
{
CompleteMessage(err);
}
}
// ----------------------------------------------------------
// CBTNotifierBase::Cancel
// Cancelling method.
// ----------------------------------------------------------
//
void CBTNotifierBase::Cancel()
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::Cancel()"));
delete iNotifUiUtil;
iNotifUiUtil = NULL;
delete iBTEngSettings;
iBTEngSettings = NULL;
delete iDevMan;
iDevMan = NULL;
delete iDevice;
iDevice = NULL;
if (iDeviceArray)
{
iDeviceArray->ResetAndDestroy();
delete iDeviceArray;
iDeviceArray = NULL;
}
CompleteMessage(KErrCancel);
}
// ----------------------------------------------------------
// CBTNotifierBase::UpdateL
// Notifier update. Not supported.
// ----------------------------------------------------------
//
TPtrC8 CBTNotifierBase::UpdateL(const TDesC8& /*aBuffer*/)
{
TPtrC8 ret(KNullDesC8);
return (ret);
}
// ----------------------------------------------------------
// CBTNotifierBase::AutoLockOnL
// ----------------------------------------------------------
//
TBool CBTNotifierBase::AutoLockOnL()
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::AutoLockOnL()"));
TBool result = EFalse;
TInt status = KBTNAutolockEnabled;
// Connecting and initialization:
CRepository* repository = CRepository::NewL(KCRUidSecuritySettings);
repository->Get(KSettingsAutolockStatus, status);
// Closing connection:
delete repository;
if ( status == KBTNAutolockEnabled )
{
result = ETrue;
}
FTRACE(FPrint(_L("[BTNOTIF]\t CBTNotifierBase::AutoLockOnL() completed with %d"), result ));
return result;
}
// ----------------------------------------------------------
// CBTNotifierBase::CheckAndSetPowerOnL
// The note or query to be shown depends on two SharedData flags
// ----------------------------------------------------------
//
TBool CBTNotifierBase::CheckAndSetPowerOnL()
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::CheckAndSetPowerOnL()"));
TBTPowerStateValue powerState( EBTPowerOff );
// Get current power status
//
User::LeaveIfError( iBTEngSettings->GetPowerState( powerState ) );
// If power is off, turn it on
//
if ( powerState == EBTPowerOff )
{
TInt offlineModeOff( 1 ); // possible values are 0 and 1
TInt activationEnabled( 0 ); // possible values are 0 and 1
// Offline mode on?
CRepository* repository = CRepository::NewL(KCRUidCoreApplicationUIs);
repository->Get(KCoreAppUIsNetworkConnectionAllowed, offlineModeOff);
delete repository;
// BT Activation enabled?
repository = CRepository::NewL(KCRUidBluetoothEngine);
repository->Get(KBTEnabledInOffline, activationEnabled);
delete repository;
// Choose user interaction
//
if ( !offlineModeOff && !activationEnabled )
{
// Show user that feature is disabled:
iNotifUiUtil->ShowInfoNoteL( R_BT_OFFLINE_DISABLED, ECmdShowBtOfflineDisableNote );
return EFalse; // Bluetooth can't be set on.
}
else
{
// Choose query
//
TInt keypress( 0 );
if ( offlineModeOff )
{
keypress = iNotifUiUtil->ShowQueryL( KErrNone, R_BT_POWER_IS_OFF_QUERY, ECmdShowBtIsOffDlg );
}
else
{
keypress = iNotifUiUtil->ShowQueryL( KErrNone, R_BT_ACTIVATE_IN_OFFLINE_QUERY,
ECmdShowBtActivateInOfflineDlg );
}
if( keypress ) // User answered YES
{
//Check if the local name has been set. If not ask user to set name
TBool ok = IsLocalNameModifiedL();
if( !ok )
{
ok = AskLocalBTNameQueryL();
}
if ( ok )
{
ok = ( iBTEngSettings->SetPowerState( EBTPowerOn ) ) ? EFalse : ETrue;
}
return ok;
}
else // User has cancelled the dialog
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::CheckAndSetPowerOnL(), dialog canceled"));
return EFalse;
}
}
}
return ETrue;
}
// ----------------------------------------------------------
// CBTNotifierBase::AskLocalBTNameQueryL()
// ----------------------------------------------------------
//
TBool CBTNotifierBase::AskLocalBTNameQueryL()
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::AskLocalBTNameQueryL() >>"));
TBTDeviceName tempNameBuffer;
// Cut the excess part of the name away. The query can handle only
// KBTUIMaxNameLength characters.
//
if( tempNameBuffer.Length() > KBTUIMaxNameLength )
{
tempNameBuffer.SetLength( KBTUIMaxNameLength );
}
//Get default name if given by e.g. phone product
(void) RProperty::Get( KPropertyUidBluetoothCategory,
KPropertyKeyBluetoothGetDeviceName, tempNameBuffer );
if( !tempNameBuffer.Length() )
{
(void) RProperty::Get( KPropertyUidBluetoothCategory,
KPropertyKeyBluetoothGetDeviceName, tempNameBuffer );
}
if( !tempNameBuffer.Length() )
{
RBTRegServ btRegServ;
RBTLocalDevice btReg;
TBTLocalDevice localDev;
TInt err = btRegServ.Connect();
if( !err )
{
err = btReg.Open( btRegServ );
}
if( !err )
{
// Read the BT local name from BT Registry.
err = btReg.Get( localDev );
}
if( !err )
{
// The error can be > 0 if there are unconverted characters.
err = CnvUtfConverter::ConvertToUnicodeFromUtf8( tempNameBuffer, localDev.DeviceName() );
}
btReg.Close();
btRegServ.Close();
}
TInt keypress = iNotifUiUtil->ShowTextInputQueryL( tempNameBuffer,
R_BT_ENTER_LOCAL_NAME_QUERY, ECmdBTnotifUnavailable );
if( keypress ) // User has accepted the dialog
{
AknTextUtils::StripCharacters(tempNameBuffer, KAknStripListControlChars);
tempNameBuffer.TrimAll(); // Remove extra spaces
// If name was full of invalid chars, it becomes empty after above cleanup.
if( tempNameBuffer.Length() )
{
TInt err = iBTEngSettings->SetLocalName( tempNameBuffer );
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::AskLocalBTNameQueryL() <<"));
return (err) ? EFalse : ETrue;
}
else
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::AskLocalBTNameQueryL() << failed"));
return EFalse;
}
}
else
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::AskLocalBTNameQueryL() << cancelled"));
return EFalse;
}
}
// ---------------------------------------------------------------------------------
// CBTNotifierBase::IsExistingConnectionToAudioL
// Check if there is any existing connection to audio profiles from the same device
// ---------------------------------------------------------------------------------
TBool CBTNotifierBase::IsExistingConnectionToAudioL( const TBTDevAddr& aDevAddr )
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::IsExistingConnectionToAudioL()"));
CBTEngConnMan* connMan = CBTEngConnMan::NewL();
TBTEngConnectionStatus conntatus( EBTEngNotConnected );
(void) connMan->IsConnected(aDevAddr,conntatus);
delete connMan;
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::IsExistingConnectionToAudioL() complete"));
return ( conntatus==EBTEngConnected || conntatus==EBTEngConnecting );
}
// ---------------------------------------------------------------------------
// CBTNotifierBase::IsLocalNameModified
// Checks from central repository whether the Bluetooth friendly name
// has been modified .
// ---------------------------------------------------------------------------
//
TBool CBTNotifierBase::IsLocalNameModifiedL()
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::IsLocalNameModified()"));
CRepository* cenRep = CRepository::NewL( KCRUidBTEngPrivateSettings );
TInt val( EBTLocalNameDefault );
(void) cenRep->Get( KBTLocalNameChanged, val );
delete cenRep;
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::IsLocalNameModified() complete"));
return val == EBTLocalNameSet;
}
void CBTNotifierBase::GetDeviceFromRegL(const TBTDevAddr& aAddr)
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::GetDeviceFromRegL"));
__ASSERT_DEBUG(iDevice, BTNOTIF_PANIC(EiDeviceNullWhenCallingGetDeviceFromRegL));
TBTRegistrySearch mySearch;
mySearch.FindAddress( aAddr );
iDeviceArray = new (ELeave) CBTDeviceArray(1);
if( !iDevMan )
{
iDevMan = CBTEngDevMan::NewL( this );
}
TInt err = iDevMan->GetDevices( mySearch, iDeviceArray );
if(err)
{
FTRACE(FPrint(_L("[BTNOTIF]\t CBTNotifierBase::GetDeviceFromRegL iDevMan->GetDevices error = %d"), err));
DoHandleGetDevicesCompleteL(err, NULL);
}
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::GetDeviceFromRegL done"));
}
// ----------------------------------------------------------
// CBTNotifierBase::QueryBlockDeviceL
// Opens a query that returns wether or not user wants the device blocked
// ----------------------------------------------------------
void CBTNotifierBase::QueryBlockDeviceL()
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::QueryBlockDeviceL()"));
__ASSERT_DEBUG( iNotifUiUtil->IsQueryReleased(), User::Panic( _L("CBTNotifierBase - iYesNoDlg not released!"), KErrAlreadyExists ) );
TBTDeviceName bName;
BtNotifNameUtils::GetDeviceDisplayName(bName, iDevice);
HBufC* header= StringLoader::LoadLC( R_BT_BLOCK_DEVICE_HEADER );
TInt resId = IsUserAwarePaired( iDevice->AsNamelessDevice() ) ?
R_BT_BLOCK_PAIRED_DEVICE_NOHELP : R_BT_BLOCK_DEVICE_NOHELP;
RBuf stringholder;
stringholder.CleanupClosePushL();
BluetoothUiUtil::LoadResourceAndSubstringL( stringholder, resId, bName, 0 );
TInt keypress = iNotifUiUtil->ShowMessageQueryL( stringholder, *header,
R_BT_GENERIC_MESSAGE_QUERY, CAknQueryDialog::EConfirmationTone );
CleanupStack::PopAndDestroy(&stringholder);
CleanupStack::PopAndDestroy(header);
if( keypress )// user replied "Yes"
{
DoBlockDevice();
}
else // user replied "No"
{
CompleteMessage(KErrCancel);
}
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::QueryBlockDeviceL() complete"));
}
void CBTNotifierBase::DoBlockDevice()
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::DoBlockDevice()"));
TBTDeviceSecurity deviceSecurity = iDevice->GlobalSecurity();
deviceSecurity.SetBanned(ETrue);
deviceSecurity.SetNoAuthenticate(EFalse);
deviceSecurity.SetNoAuthorise(EFalse);
iDevice->SetGlobalSecurity(deviceSecurity);
iDevice->DeleteLinkKey();
iBTRegistryQueryState = ESetDeviceBlocked;
TInt err = KErrNone;
if( !iDevMan )
{
TRAP(err, iDevMan = CBTEngDevMan::NewL( this ));
}
if( !err )
{
err = iDevMan->ModifyDevice( *iDevice );
}
if( err )
{
// if error, complete message, otherwise waiting for devman callback
CompleteMessage(err);
}
}
void CBTNotifierBase::ChangeAuthorizeState( TBool aTrust )
{
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::ChangeAuthorizeState()"));
TBTDeviceSecurity sec = iDevice->GlobalSecurity();
sec.SetBanned(EFalse);
sec.SetNoAuthorise( ( aTrust ) ? ETrue : EFalse ) ;
iDevice->SetGlobalSecurity(sec);
iBTRegistryQueryState = ESetDeviceAuthorizeState;
TInt err = KErrNone;
if( !iDevMan )
{
TRAP(err, iDevMan = CBTEngDevMan::NewL( this ));
}
if( !err )
{
err = iDevMan->ModifyDevice( *iDevice );
}
if( err )
{
// if error, complete message, otherwise waiting for devman callback
CompleteMessage(err);
TBTNotifLockPublish::DeleteNotifLocks(
EBTNotiferLockPairedDeviceSetting, iDevice->BDAddr() );
}
}
// ----------------------------------------------------------
// CBTNotifierBase::CheckAndHandleQueryIntervalL
// ----------------------------------------------------------
//
void CBTNotifierBase::CheckAndHandleQueryIntervalL()
{
FLOG( _L( "[BTNOTIF]\t CBTNotifierBase::CheckQueryInterval start." ) );
TBool res = CheckQueryInterval();
if( res )
{
FLOG( _L( "[BTNOTIF]\t CBTNotifierBase::CheckQueryInterval check on/off query status." ) );
// Check if we're already showing Turn BT off query
TInt queryValue=EBTQueryOff;
RProperty::Get( KPSUidBluetoothEnginePrivateCategory, KBTTurnBTOffQueryOn, queryValue );
if( queryValue==EBTQueryOff )
{
FLOG( _L( "[BTNOTIF]\t CBTNotifierBase::CheckQueryInterval asking to turn BT off." ) );
RProperty::Set( KPSUidBluetoothEnginePrivateCategory, KBTTurnBTOffQueryOn, EBTQueryOn );
TInt keypress = iNotifUiUtil->ShowQueryL( KErrNone, R_BT_TURN_BT_OFF_NOTE, ECmdBTnotifUnavailable );
RProperty::Set( KPSUidBluetoothEnginePrivateCategory, KBTTurnBTOffQueryOn, EBTQueryOff );
if( keypress ) // User has accepted the dialog
{
FLOG( _L( "[BTNOTIF]\t CBTNotifierBase::CheckQueryInterval turning BT off." ) );
(void) iBTEngSettings->SetPowerState( EBTPowerOff );
CompleteMessage( KErrAccessDenied );
}
}
}
FLOG( _L( "[BTNOTIF]\t CBTNotifierBase::CheckAndHandleQueryIntervalL done." ) );
}
void CBTNotifierBase::DoHandleGetDevicesCompleteL( TInt aErr, CBTDeviceArray* aDeviceArray)
{
FTRACE(FPrint(_L("[BTNOTIF]\t CBTNotifierBase::DoHandleGetDevicesCompleteL(%d)"), aErr ));
TBTDeviceName devName;
if (!aErr && aDeviceArray && aDeviceArray->Count())
{
// Reassign so that we won't lose the device name as it is
// needed if registry doesn't have the name for this device yet:
CBTDevice* temp = iDevice;
CleanupStack::PushL(temp);
// Taking the object returned by registry so that iDevice have
// all the up-to-date information except device name.
iDevice = aDeviceArray->At(0);
aDeviceArray->Delete( 0 );
// we show user the device name from registry if it is available;
// Otherwise, the name passed in by the notifier request shall be
// used.
if( ( !iDevice->IsValidDeviceName() ||
!iDevice->DeviceName().Length() ) &&
temp->IsValidDeviceName() )
{
// We are using a stored device name, which will
// already have been processed
iDevice->SetDeviceNameL( temp->DeviceName() );
}
CleanupStack::PopAndDestroy(temp);
}
BtNotifNameUtils::GetDeviceName(devName, iDevice);
// It is possible that iDevice hasn't got a name so far. Use the default BT name
// got from GetDeviceName().
if ( !iDevice->IsValidDeviceName() || !iDevice->DeviceName().Length() )
{
BtNotifNameUtils::SetDeviceNameL(devName, *iDevice);
}
HandleGetDeviceCompletedL( iDevice );
}
// ----------------------------------------------------------
// CBTNotifierBase::CompleteMessage
// ----------------------------------------------------------
//
void CBTNotifierBase::CompleteMessage(TInt aErr)
{
if( !iMessage.IsNull() )
{
FTRACE(FPrint(_L("[BTNOTIF]\t CBTNotifierBase::CompleteMessage(%d)"), aErr ));
iMessage.Complete( aErr );
}
}
// ----------------------------------------------------------
// CBTNotifierBase::CompleteMessage
// ----------------------------------------------------------
//
void CBTNotifierBase::CompleteMessage(TInt aValueToReplySlot, TInt aErr)
{
FTRACE(FPrint(_L("[BTNOTIF]\t CBTNotifierBase::CompleteMessage(%d, %d)"),
aValueToReplySlot, aErr ) );
CompleteMessage(TPckgBuf<TInt>( aValueToReplySlot ), aErr);
}
// ----------------------------------------------------------
// CBTNotifierBase::CompleteMessage
// ----------------------------------------------------------
//
void CBTNotifierBase::CompleteMessage(const TDesC8& aDesToReplySlot, TInt aErr)
{
if( !iMessage.IsNull() )
{
FTRACE(FPrint(_L("[BTNOTIF]\t CBTNotifierBase::CompleteMessage(TDesC8&, %d)"), aErr ) );
if ( !aErr )
{
aErr = iMessage.Write( iReplySlot, aDesToReplySlot );
}
iMessage.Complete( aErr );
}
}
#ifdef __SERIES60_HELP
//-------------------------------------------------------------
// CBTNotifierBase::LaunchHelp
//--------------------------------------------------------------
TInt CBTNotifierBase::LaunchHelp(TAny * tCoeHelpContext )
{
TCoeHelpContext hc;
if( tCoeHelpContext==NULL)
hc = TCoeHelpContext(KUidBTUI,KBT_HLP_BLOCKED);
else
hc = *static_cast<TCoeHelpContext*>(tCoeHelpContext);
CArrayFix< TCoeHelpContext >* array = new CArrayFixFlat< TCoeHelpContext >(1);
TRAPD(err,
{
CleanupStack::PushL(array);
array->AppendL(hc);
HlpLauncher::LaunchHelpApplicationL( CCoeEnv::Static()->WsSession() , array );
CleanupStack::Pop(array);
});
// the array is not deleted, since deleting it will result
// to E32User-CBase 3. It is assumed that HlpLancher is taking care of it.
// however this has not been documented.
return err;
}
#endif
void CBTNotifierBase::HandleGetDevicesComplete( TInt aErr, CBTDeviceArray* aDeviceArray)
{
TRAP_IGNORE(DoHandleGetDevicesCompleteL(aErr, aDeviceArray));
}
void CBTNotifierBase::HandleDevManComplete(TInt aErr)
{
FTRACE(FPrint(_L("[BTNOTIF]\t CBTNotifierBase::HandleDevManComplete() aErr = %d"), aErr ));
switch (iBTRegistryQueryState)
{
case ESetDeviceBlocked:
{
// Blocking device was demanded by user after the user
// rejected incoming pairing or connect request. The message
// to be completed here is the original pair or authorization request
// which has been rejected by the user.
CompleteMessage(KErrCancel);
}
case ESetDeviceAuthorizeState:
{
TBTNotifLockPublish::DeleteNotifLocks(
EBTNotiferLockPairedDeviceSetting, iDevice->BDAddr() );
CompleteMessage(aErr);
break;
}
}
FLOG(_L("[BTNOTIF]\t CBTNotifierBase::HandleDevManComplete() Complete"));
}
void CBTNotifierBase::HandleGetDeviceCompletedL(const CBTDevice* /*aDev*/)
{
}
// ----------------------------------------------------------
// CBTNotifierBase::CheckQueryInterval
// ----------------------------------------------------------
//
TBool CBTNotifierBase::CheckQueryInterval()
{
FLOG( _L( "[BTNOTIF]\t CBTNotifierBase::CheckQueryInterval()" ) );
TBool result = EFalse;
// Check if the user gets too many queries within a certain time interval from unpaired devices
if( iDevice && !iDevice->IsValidLinkKey() )
{
TBuf8<32> buf;
TTime now;
now.UniversalTime(); // Get current time
TInt64 writeTime = ( now + REJECT_ADD_TIME ).Int64();
// get last connection time
TInt err = RProperty::Get( KPSUidBluetoothEnginePrivateCategory, KBTConnectionTimeStamp, buf );
if( !err )
{
FLOG( _L( "[BTNOTIF]\t CBTNotifierBase::CheckQueryInterval Checking query interval." ) );
// Parse recorded time stamp
TInt64 num(0);
TLex8 lex;
lex = buf;
lex.Val( num );
TTime lastTime( num );
// detection of clock adjusment
TInt timetravel = 2 * REJECT_ADD_TIME.Int();
if( lastTime > now + TTimeIntervalSeconds(timetravel) )
{
FLOG( _L( "[BTNOTIF]\t CBTNotifierBase::CheckQueryInterval time travel detection." ) );
lastTime = now;
}
// new request too quickly, move booked time
if( lastTime + CONNECT_ADD_TIME > now )
{
FLOG( _L( "[BTNOTIF]\t CBTAuthNotifier::IsDosAttack CONNECT_ADD_TIME added." ) );
writeTime = ( lastTime + CONNECT_ADD_TIME ).Int64();
}
FTRACE( FPrint( _L( "[BTNOTIF]\t CBTNotifierBase::CheckQueryInterval() lastTime = %d" ), lastTime.Int64() ) );
FTRACE( FPrint( _L( "[BTNOTIF]\t CBTNotifierBase::CheckQueryInterval now + treshold: %d" ), (now + DENY_THRESHOLD).Int64() ) );
// If threshold is exceeded, ask user to turn Bluetooth OFF
if( lastTime > now + DENY_THRESHOLD )
{
FLOG( _L( "[BTNOTIF]\t CBTNotifierBase::CheckQueryInterval threshold exceeded!." ) );
result = ETrue;
}
}
else
{
FLOG( _L( "[BTNOTIF]\t CBTNotifierBase::CheckQueryInterval setting connection timestamp first time." ) );
}
// Write back the timestamp
buf.Num( writeTime );
FTRACE( FPrint( _L( "[BTNOTIF]\t CBTNotifierBase::CheckQueryInterval updating timestamp: %d." ), writeTime ) );
RProperty::Set( KPSUidBluetoothEnginePrivateCategory,KBTConnectionTimeStamp, buf );
} // end of query interval check
FLOG( _L( "[BTNOTIF]\t CBTNotifierBase::CheckQueryInterval() complete" ) );
return result;
}
// End of File