usbengines/usbwatcher/src/cusbdevicelock.cpp
author Pat Downey <patd@symbian.org>
Fri, 04 Jun 2010 10:27:39 +0100
changeset 35 9d8b04ca6939
parent 0 1e05558e2206
permissions -rw-r--r--
Revert last code drop.
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/*
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* Copyright (c) 2006-2009 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:  Implements device lock feature in case of USB
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*
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*/
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#include <featmgr.h>
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#include <bldvariant.hrh>
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#include <e32base.h>
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#include <e32property.h>
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#include <coreapplicationuisdomainpskeys.h>
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#include <e32property.h>
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#include "debug.h"
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#include "cusbdevicelock.h"
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#include "cusbwatcher.h"
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// ======== MEMBER FUNCTIONS ========
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// ----------------------------------------------------------------------------
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// C++ constructor
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// ----------------------------------------------------------------------------
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//
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CUsbDeviceLock::CUsbDeviceLock( CUsbWatcher& aOwner )
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    : CActive( EPriorityNormal )
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    , iOwner( aOwner )
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    {
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    LOG_FUNC
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    CActiveScheduler::Add(this);
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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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CUsbDeviceLock::~CUsbDeviceLock()
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    {
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    LOG_FUNC
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    if( FeatureManager::FeatureSupported( KFeatureIdUsbDeviceLock ) )
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        {
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        Cancel();
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        iProperty.Close();
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        }
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    FeatureManager::UnInitializeLib();
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    }
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// ----------------------------------------------------------------------------
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// Two-phased constructor.
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// ----------------------------------------------------------------------------
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//
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CUsbDeviceLock* CUsbDeviceLock::NewL( CUsbWatcher& aOwner )
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    {
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    LOG_FUNC
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    CUsbDeviceLock* self = new ( ELeave ) CUsbDeviceLock( aOwner );
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    CleanupStack::PushL( self );
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    self->ConstructL();
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    CleanupStack::Pop(); // pop self
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    return self;
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    }
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// ----------------------------------------------------------------------------
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// Symbian 2nd phase constructor can leave.
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// ----------------------------------------------------------------------------
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//
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void CUsbDeviceLock::ConstructL()
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    {
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    LOG_FUNC
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    FeatureManager::InitializeLibL();
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    if( FeatureManager::FeatureSupported( KFeatureIdUsbDeviceLock ) )
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        {
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        LEAVEIFERROR( iProperty.Attach( KPSUidCoreApplicationUIs,
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            KCoreAppUIsAutolockStatus ) );
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        }
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    }
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// ----------------------------------------------------------------------------
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// Subscribes to P&S property.
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// ----------------------------------------------------------------------------
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//
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void CUsbDeviceLock::Subscribe()
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    {
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    LOG_FUNC
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    if( FeatureManager::FeatureSupported( KFeatureIdUsbDeviceLock ) )
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        {
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        if ( !IsActive() )
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            {
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            iProperty.Subscribe( iStatus );
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            SetActive();
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            }
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        else
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            {
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            LOG( "ERROR: request exists" );
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            }
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        }
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    }
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// ----------------------------------------------------------------------------
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// Get device lock state.
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// ----------------------------------------------------------------------------
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//
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TBool CUsbDeviceLock::Locked()
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    {
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    LOG_FUNC
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    TInt command;
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    if( FeatureManager::FeatureSupported( KFeatureIdUsbDeviceLock ) )
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        {
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        TInt err = iProperty.Get( command );
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        if(  KErrNone == err )
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            {
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            LOG1( "Autolock status = %d", command );
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            if( EAutolockOff == command )
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                {
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                LOG("Device UNLOCKED" );
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                return EFalse;
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                }
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            else
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                {
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                LOG( "Device LOCKED"  );
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                }
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            }
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        else
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            {
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            LOG1( "ERROR: RProperty::Get = %d", err );
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            }
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        return ETrue;
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        }
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    return EFalse;
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    }
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// ----------------------------------------------------------------------------
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// Standard active object error function.
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// ----------------------------------------------------------------------------
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//
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TInt CUsbDeviceLock::RunError( TInt /*aError*/ )
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    {
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    LOG_FUNC
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    return KErrNone;
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    }
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// ----------------------------------------------------------------------------
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// When device lock state changes this method is executed.
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// ----------------------------------------------------------------------------
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//
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void CUsbDeviceLock::RunL()
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    {
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    LOG_FUNC
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    LOG1( "iStatus: %d", iStatus.Int() );
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    Subscribe();
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    TInt command = EAutolockStatusUninitialized;
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    TInt err = iProperty.Get( command );
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    if ( err == KErrNone )
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   176
        {
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        LOG1( "Autolock status: %d", command );
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        switch ( command )
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   179
            {
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            case EAutolockOff:
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                iOwner.Unlock();
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                break;
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   183
            case ERemoteLocked:
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                iOwner.Lock();
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                break;
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   186
            default:
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                LOG1( "Unhandled state: %d",  command );
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   188
                break;
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   189
            }
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   190
        }
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   191
    else
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   192
        {
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   193
        LOG1( "RProperty::Get ERROR %d", err );
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   194
        }
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   195
    }
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   196
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// ----------------------------------------------------------------------------
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// CUsbMediaWatcher::CUsbDeviceLock::DoCancel
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   199
// Basic DoCancel.
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   200
// ----------------------------------------------------------------------------
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   201
//
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   202
void CUsbDeviceLock::DoCancel()
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   203
    {
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   204
    LOG_FUNC
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diff changeset
   205
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   206
    if( FeatureManager::FeatureSupported( KFeatureIdUsbDeviceLock ) )
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   207
        {
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   208
        iProperty.Cancel();
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diff changeset
   209
        }
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   210
    }
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parents:
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   211
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   212
// End if file