--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/localconnectivityservice/dun/plugins/src/usb/DunUsbConfig.cpp	Tue Aug 31 16:03:15 2010 +0300
@@ -0,0 +1,292 @@
+/*
+* Copyright (c) 2006-2008 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:  DUN USB configuration accessor and listener
+*
+*/
+
+
+#include "DunUsbConfig.h"
+#include "DunDebug.h"
+
+const TUint KDunUsbSupportedConfigVersion = 1;
+
+// ---------------------------------------------------------------------------
+// Two-phased constructor.
+// ---------------------------------------------------------------------------
+//
+CDunUsbConfig* CDunUsbConfig::NewL( MDunServerCallback* aServer,
+                                    MDunUsbConfig* aCallback,
+                                    TUint8 aProtocol )
+    {
+    CDunUsbConfig* self = new (ELeave) CDunUsbConfig( aServer,
+                                                      aCallback,
+                                                      aProtocol );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// Destructor.
+// ---------------------------------------------------------------------------
+//
+CDunUsbConfig::~CDunUsbConfig()
+    {
+    FTRACE(FPrint( _L("CDunUsbConfig::~CDunUsbConfig()" )));
+    ResetData();
+    FTRACE(FPrint( _L("CDunUsbConfig::~CDunUsbConfig() complete" )));
+    }
+
+// ---------------------------------------------------------------------------
+// Resets data to initial values
+// ---------------------------------------------------------------------------
+//
+void CDunUsbConfig::ResetData()
+    {
+    // APIs affecting this:
+    // IssueRequest()
+    Stop();
+    // NewL()
+    iAcmProperty.Close();
+    // Internal
+    Initialize();
+    }
+
+// ---------------------------------------------------------------------------
+// Compares initialized protocol number to configuration by index
+// ---------------------------------------------------------------------------
+//
+TInt CDunUsbConfig::GetConfigValidityByIndex( TInt aIndex, TBool& aValidity )
+    {
+    FTRACE(FPrint( _L("CDunUsbConfig::GetConfigValidityByIndex()" )));
+    if ( iConfigState != EUsbConfigStateIdle )
+        {
+        FTRACE(FPrint( _L("CDunUsbConfig::GetConfigValidityByIndex() (not ready) complete" )));
+        return KErrNotReady;
+        }
+    if ( !iConfigExist )
+        {
+        TInt retTemp = GetConfiguration( iConfig );
+        if ( retTemp != KErrNone )
+            {
+            FTRACE(FPrint( _L("CDunUsbConfig::GetConfigValidityByIndex() (get failed) complete" )));
+            return retTemp;
+            }
+        }
+    if ( aIndex < 0 ||
+         aIndex >= iConfig.iAcmCount ||
+         aIndex >= TPublishedAcmConfigs::KAcmMaxFunctions )
+        {
+        FTRACE(FPrint( _L("CDunUsbConfig::GetConfigValidityByIndex() (not found) complete" )));
+        return KErrNotFound;
+        }
+    if ( iConfig.iAcmConfig[aIndex].iProtocol == iProtocol )
+        {
+        aValidity = ETrue;
+        }
+    else
+        {
+        aValidity = EFalse;
+        }
+    FTRACE(FPrint( _L("CDunUsbConfig::GetConfigValidityByIndex() complete (%d/%d)" ), aIndex, aValidity));
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------------------------
+// Starts listening for ACM configuration changes
+// ---------------------------------------------------------------------------
+//
+TInt CDunUsbConfig::IssueRequest()
+    {
+    FTRACE(FPrint( _L("CDunUsbConfig::IssueRequest()" )));
+    if ( iConfigState != EUsbConfigStateIdle )
+        {
+        FTRACE(FPrint( _L("CDunUsbConfig::IssueRequest() (not ready) complete" )));
+        return KErrNotReady;
+        }
+    iStatus = KRequestPending;
+    iAcmProperty.Subscribe( iStatus );
+    SetActive();
+    iConfigState = EUsbConfigStateWaiting;
+    FTRACE(FPrint( _L("CDunUsbConfig::IssueRequest() complete" )));
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------------------------
+// Stops listening for ACM configuration changes
+// ---------------------------------------------------------------------------
+//
+TInt CDunUsbConfig::Stop()
+    {
+    FTRACE(FPrint( _L("CDunUsbConfig::Stop()" )));
+    if ( iConfigState != EUsbConfigStateWaiting )
+        {
+        FTRACE(FPrint( _L("CDunUsbConfig::Stop() (not ready) complete" )));
+        return KErrNotReady;
+        }
+    iAcmProperty.Cancel();
+    Cancel();
+    iConfigState = EUsbConfigStateIdle;
+    FTRACE(FPrint( _L("CDunUsbConfig::Stop() complete" )));
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------------------------
+// CDunUsbConfig::CDunUsbConfig
+// ---------------------------------------------------------------------------
+//
+CDunUsbConfig::CDunUsbConfig( MDunServerCallback* aServer,
+                              MDunUsbConfig* aCallback,
+                              TUint8 aProtocol ) :
+    CActive( EPriorityStandard ),
+    iServer( aServer ),
+    iCallback( aCallback ),
+    iProtocol( aProtocol )
+    {
+    Initialize();
+    }
+
+// ---------------------------------------------------------------------------
+// CDunUsbConfig::ConstructL
+// ---------------------------------------------------------------------------
+//
+void CDunUsbConfig::ConstructL()
+    {
+    FTRACE(FPrint( _L("CDunUsbConfig::ConstructL()" )));
+    if ( !iServer || !iCallback )
+        {
+        User::Leave( KErrGeneral );
+        }
+    User::LeaveIfError( iAcmProperty.Attach(KUidSystemCategory,KAcmKey) );
+    CActiveScheduler::Add( this );
+    FTRACE(FPrint( _L("CDunUsbConfig::ConstructL() complete" )));
+    }
+
+// ---------------------------------------------------------------------------
+// Initializes this class
+// ---------------------------------------------------------------------------
+//
+void CDunUsbConfig::Initialize()
+    {
+    // Don't initialize iCallback here (it is set through NewL)
+    // Don't initialize iProtocol here (it is set through NewL)
+    iConfigState = EUsbConfigStateIdle;
+    iConfig.iAcmConfigVersion = 0;
+    iConfig.iAcmCount = 0;
+    iConfigExist = EFalse;
+    }
+
+// ---------------------------------------------------------------------------
+// Gets current ACM configuration
+// ---------------------------------------------------------------------------
+//
+TInt CDunUsbConfig::GetConfiguration( TPublishedAcmConfigs& aConfig )
+    {
+    FTRACE(FPrint( _L("CDunUsbConfig::GetConfiguration()" )));
+    TPckgBuf<TPublishedAcmConfigs> configBuf;
+    TInt retTemp = iAcmProperty.Get( configBuf );
+    if ( retTemp != KErrNone )
+        {
+        FTRACE(FPrint( _L("CDunUsbConfig::GetConfiguration() (ERROR) complete" )));
+        return retTemp;
+        }
+    aConfig = configBuf();
+    // Check that version is that which we currently support
+    if ( aConfig.iAcmConfigVersion != KDunUsbSupportedConfigVersion )
+        {
+        FTRACE(FPrint( _L("CDunUsbConfig::GetConfiguration() (not supported) complete" )));
+        return KErrNotSupported;
+        }
+    // Check that count is within bounds
+    if ( aConfig.iAcmCount > TPublishedAcmConfigs::KAcmMaxFunctions )
+        {
+        FTRACE(FPrint( _L("CDunUsbConfig::GetConfiguration() (overflow) complete" )));
+        return KErrOverflow;
+        }
+    iConfigExist = ETrue;
+    FTRACE(FPrint( _L("CDunUsbConfig::GetConfiguration() complete" )));
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------------------------
+// From class CActive.
+// Gets called when ACM configuration changes
+// ---------------------------------------------------------------------------
+//
+void CDunUsbConfig::RunL()
+    {
+    FTRACE(FPrint( _L("CDunUsbConfig::RunL()" )));
+    iConfigState = EUsbConfigStateIdle;
+
+    TPublishedAcmConfigs newConfig;
+    TInt retTemp = GetConfiguration( newConfig );
+    if ( retTemp != KErrNone )
+        {
+        FTRACE(FPrint( _L("CDunUsbConfig::RunL() (ERROR) complete (%d)" ), retTemp));
+        iServer->NotifyPluginCloseRequest( KDunUsbPluginUid, ETrue );
+        return;
+        }
+    // Change that is same is not possible so check that first
+    if ( newConfig.iAcmCount == iConfig.iAcmCount )
+        {
+        FTRACE(FPrint( _L("CDunUsbConfig::RunL() (no change) complete" )));
+        iServer->NotifyPluginCloseRequest( KDunUsbPluginUid, ETrue );
+        return;
+        }
+
+    // Now we have the changed configuration so find out are there added or
+    // removed USB ACMs
+
+    TInt i;
+    if ( newConfig.iAcmCount > iConfig.iAcmCount )  // addition
+        {
+        // Addition is always done to end of ACM queue by N entry addition
+        // Scan through new array and report change if necessary
+        for ( i=iConfig.iAcmCount; i<newConfig.iAcmCount; i++ )
+            {
+            if ( newConfig.iAcmConfig[i].iProtocol == iProtocol )
+                {
+                iCallback->NotifyConfigAddition( i );
+                }
+            }
+        }
+    else  // removal ( newConfig.iAcmCount < iConfig.iAcmCount )
+        {
+        // Removal is always done to end of ACM queue by N entry removal
+        // Scan through old array and report change if necessary
+        for ( i=newConfig.iAcmCount; i<iConfig.iAcmCount; i++ )
+            {
+            if ( iConfig.iAcmConfig[i].iProtocol == iProtocol )
+                {
+                iCallback->NotifyConfigRemoval( i );
+                }
+            }
+        }
+
+    // Update config and restart listening
+    iConfig = newConfig;
+    IssueRequest();
+
+    FTRACE(FPrint( _L("CDunUsbConfig::RunL() complete" )));
+    }
+
+// ---------------------------------------------------------------------------
+// From class CActive.
+// Gets called on cancel
+// ---------------------------------------------------------------------------
+//
+void CDunUsbConfig::DoCancel()
+    {
+    }