--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/localconnectivityservice/dun/plugins/src/usb/DunUsbListen.cpp	Tue Aug 31 16:03:15 2010 +0300
@@ -0,0 +1,259 @@
+/*
+* 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 plugin's listener
+*
+*/
+
+
+#include <e32std.h>
+#include "DunUtils.h"
+#include "DunUsbListen.h"
+#include "DunDebug.h"
+
+const TUint KDunUsbDeviceStateMask = 0x00ff;
+
+// ======== MEMBER FUNCTIONS ========
+
+// ---------------------------------------------------------------------------
+// Two-phased constructor.
+// ---------------------------------------------------------------------------
+//
+CDunUsbListen* CDunUsbListen::NewL( MDunServerCallback* aServer,
+                                    MDunListenCallback* aParent,
+                                    RUsb& aUsbServer )
+    {
+    CDunUsbListen* self = new (ELeave) CDunUsbListen( aServer,
+                                                      aParent,
+                                                      aUsbServer );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// Destructor.
+// ---------------------------------------------------------------------------
+//
+CDunUsbListen::~CDunUsbListen()
+    {
+    FTRACE(FPrint( _L( "CDunUsbListen::~CDunUsbListen()" ) ));
+    ResetData();
+    FTRACE(FPrint( _L( "CDunUsbListen::~CDunUsbListen() complete" ) ));
+    }
+
+// ---------------------------------------------------------------------------
+// Resets data to initial values
+// ---------------------------------------------------------------------------
+//
+void CDunUsbListen::ResetData()
+    {
+    // APIs affecting this:
+    // IssueRequestL()
+    Stop();
+    // Internal
+    Initialize();
+    }
+
+// ---------------------------------------------------------------------------
+// IssueRequest to USB server for device state change notifications
+// ---------------------------------------------------------------------------
+//
+TInt CDunUsbListen::IssueRequestL()
+    {
+    FTRACE(FPrint( _L( "CDunUsbListen::IssueRequestL()" )));
+
+    if ( iUsbServer.Handle() == KNullHandle )
+        {
+        FTRACE(FPrint( _L( "CDunUsbListen::IssueRequestL() (iUsbServer) complete" ) ));
+        User::Leave( KErrGeneral );
+        }
+
+    TUsbDeviceState usbDeviceState;
+    User::LeaveIfError( iUsbServer.GetDeviceState(usbDeviceState) );
+    FTRACE(FPrint( _L( "CDunUsbListen::IssueRequestL() Usb device state = %X" ), usbDeviceState));
+    if ( iDeviceState == EUsbDeviceStateUndefined )
+        {
+        iDeviceState = usbDeviceState;
+        }
+
+    // USB device state now set; if configured already, notify parent
+    // If not yet configured, start listening
+
+    if ( usbDeviceState == EUsbDeviceStateConfigured )
+        {
+        FTRACE(FPrint( _L( "CDunUsbListen::IssueRequestL() (already exists) complete" ) ));
+        return KErrAlreadyExists;
+        }
+
+    Activate();
+
+    FTRACE(FPrint( _L( "CDunUsbListen::IssueRequestL() complete" ) ));
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------------------------
+// Stops listening
+// ---------------------------------------------------------------------------
+//
+TInt CDunUsbListen::Stop()
+    {
+    FTRACE(FPrint( _L( "CDunUsbListen::Stop()" ) ));
+    if ( iListenState != EUsbListenStateListening )
+        {
+        FTRACE(FPrint( _L( "CDunUsbListen::Stop() (not ready) complete" ) ));
+        return KErrNotReady;
+        }
+    iUsbServer.DeviceStateNotificationCancel();
+    Cancel();
+    iListenState = EUsbListenStateIdle;
+    iDeviceState = EUsbDeviceStateUndefined;
+    iDeviceStatePrev = EUsbDeviceStateUndefined;
+    FTRACE(FPrint( _L( "CDunUsbListen::Stop() complete" ) ));
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------------------------
+// CDunUsbListen::CDunUsbListen
+// ---------------------------------------------------------------------------
+//
+CDunUsbListen::CDunUsbListen( MDunServerCallback* aServer,
+                              MDunListenCallback* aParent,
+                              RUsb& aUsbServer ) :
+    CActive( EPriorityStandard ),
+    iServer( aServer ),
+    iParent( aParent ),
+    iUsbServer( aUsbServer )
+    {
+    Initialize();
+    }
+
+// ---------------------------------------------------------------------------
+// CDunUsbListen::ConstructL
+// ---------------------------------------------------------------------------
+//
+void CDunUsbListen::ConstructL()
+    {
+    FTRACE(FPrint( _L( "CDunUsbListen::ConstructL()" ) ));
+    if ( !iServer || !iParent )
+        {
+        User::Leave( KErrGeneral );
+        }
+    CActiveScheduler::Add( this );
+    FTRACE(FPrint( _L( "CDunUsbListen::ConstructL() complete" ) ));
+    }
+
+// ---------------------------------------------------------------------------
+// Initializes this class
+// ---------------------------------------------------------------------------
+//
+void CDunUsbListen::Initialize()
+    {
+    // Don't initialize iServer here (it is set through NewL)
+    // Don't initialize iParent here (it is set through NewL)
+    // Don't initialize iUsbServer here (it is set through NewL)
+    iDeviceState = EUsbDeviceStateUndefined;
+    iDeviceStatePrev = EUsbDeviceStateUndefined;
+    }
+
+// ---------------------------------------------------------------------------
+// Activates listening request
+// ---------------------------------------------------------------------------
+//
+TInt CDunUsbListen::Activate()
+    {
+    FTRACE(FPrint( _L( "CDunUsbListen::Activate()" ) ));
+
+    if ( iListenState != EUsbListenStateIdle )
+        {
+        FTRACE(FPrint( _L( "CDunUsbListen::Activate() (not ready) complete" ) ));
+        return KErrNotReady;
+        }
+    iDeviceStatePrev = iDeviceState;
+    iStatus = KRequestPending;
+    iUsbServer.DeviceStateNotification( KDunUsbDeviceStateMask,
+                                        iDeviceState,
+                                        iStatus );
+    SetActive();
+    iListenState = EUsbListenStateListening;
+    FTRACE(FPrint( _L( "CDunUsbListen::Activate() complete" ) ));
+    return KErrNone;
+    }
+
+// ---------------------------------------------------------------------------
+// From class CActive.
+// Called when read or write operation is ready.
+// ---------------------------------------------------------------------------
+//
+void CDunUsbListen::RunL()
+    {
+    FTRACE(FPrint( _L( "CDunUsbListen::RunL() iStatus=%d"), iStatus.Int() ));
+    iListenState = EUsbListenStateIdle;
+
+    if ( iStatus.Int() != KErrNone )
+        {
+        FTRACE(FPrint( _L( "CDunUsbListen::RunL() (ERROR) complete" )));
+        iServer->NotifyPluginCloseRequest( KDunUsbPluginUid, ETrue );
+        return;
+        }
+
+    FTRACE(FPrint( _L( "CDunUsbListen::RunL() Usb device state =%X, Issue request" ), iDeviceState));
+
+    TDunPluginState parentState = iServer->GetPluginStateByUid( KDunUsbPluginUid );
+
+    TInt retTemp = KErrNone;
+    if ( iDeviceState == EUsbDeviceStateConfigured &&
+         iDeviceStatePrev != EUsbDeviceStateConfigured &&
+         parentState != EDunStateChanneled )
+        {
+        // USB has been connected&configured and we are in PC Suite mode
+        FTRACE(FPrint( _L( "CDunUsbListen::RunL() DeviceState is configured -> open connection" ) ));
+        TBool noFreeChans = EFalse;
+        // noFreeChans will be omitted (not needed to set to RComm)
+        retTemp = iParent->NotifyChannelAllocate( noFreeChans );
+        if ( retTemp != KErrNone )
+            {
+            FTRACE(FPrint( _L( "CDunUsbListen::RunL() channel allocation failed!" ) ));
+            iServer->NotifyPluginCloseRequest( KDunUsbPluginUid, ETrue );
+            return;
+            }
+        }
+    else if ( iDeviceState < EUsbDeviceStateConfigured &&
+              iDeviceStatePrev >= EUsbDeviceStateConfigured &&
+              parentState == EDunStateChanneled )
+        {
+        FTRACE(FPrint( _L( "CDunUsbListen::RunL() DeviceState is not configured -> close connection" ) ));
+        retTemp = iParent->NotifyChannelFree();
+        if ( retTemp != KErrNone )
+            {
+            FTRACE(FPrint( _L( "CDunUsbListen::RunL() channel free failed!" ) ));
+            iServer->NotifyPluginCloseRequest( KDunUsbPluginUid, ETrue );
+            return;
+            }
+        }
+
+    // Start listening again
+    Activate();
+
+    FTRACE(FPrint( _L( "CDunUsbListen::RunL() complete" )));
+    }
+
+// ---------------------------------------------------------------------------
+// From class CActive.
+// Cancel current activity.
+// ---------------------------------------------------------------------------
+//
+void CDunUsbListen::DoCancel()
+    {
+    }