internal unsafe void ClearCache()
{
// Tell the driver to search for any new SSIDs
// and return them on the next OID_802_11_BSSID_LIST
// message.
uint dwBytesReturned = 0;
NDISUIO_QUERY_OID queryOID = new NDISUIO_QUERY_OID(0);
IntPtr ndisAccess;
bool retval;
// Attach to NDISUIO.
ndisAccess = FileEx.CreateFile(
NDISUIOPInvokes.NDISUIO_DEVICE_NAME,
FileAccess.All,
FileShare.None,
FileCreateDisposition.OpenExisting,
NDISUIOPInvokes.FILE_ATTRIBUTE_NORMAL | NDISUIOPInvokes.FILE_FLAG_OVERLAPPED);
if ((int)ndisAccess == FileEx.InvalidHandle)
{
// The operation failed. Leave us empty.
return;
}
// Send message to driver.
byte[] namestr = System.Text.Encoding.Unicode.GetBytes(adapter.Name + '\0');
fixed(byte *name = &namestr[0])
{
// Get Signal strength
queryOID.ptcDeviceName = name;
queryOID.Oid = NDISUIOPInvokes.OID_802_11_BSSID_LIST_SCAN; // 0x0D01011A
retval = NDISUIOPInvokes.DeviceIoControl(ndisAccess,
NDISUIOPInvokes.IOCTL_NDISUIO_SET_OID_VALUE, // 0x120814
queryOID,
queryOID.Size,
queryOID,
queryOID.Size,
ref dwBytesReturned,
IntPtr.Zero);
}
if (retval)
{
// The call went fine. There is no return
// data.
}
else
{
// There was an error.
int err = MarshalEx.GetLastWin32Error();
// ToDo: Additional error processing.
}
queryOID = null;
FileEx.CloseHandle(ndisAccess);
}
internal void StatusThread()
{
// Ask NDISUIO to send us notification messages for our
// adapter.
IntPtr ndisAccess = FileEx.CreateFile(
NDISUIOPInvokes.NDISUIO_DEVICE_NAME,
FileAccess.All,
FileShare.None,
FileCreateDisposition.OpenExisting,
NDISUIOPInvokes.FILE_ATTRIBUTE_NORMAL | NDISUIOPInvokes.FILE_FLAG_OVERLAPPED);
if ((int)ndisAccess == FileEx.InvalidHandle)
{
return;
}
NDISUIO_REQUEST_NOTIFICATION ndisRequestNotification =
new NDISUIO_REQUEST_NOTIFICATION();
ndisRequestNotification.hMsgQueue = mq.Handle;
ndisRequestNotification.dwNotificationTypes =
NDISUIOPInvokes.NDISUIO_NOTIFICATION_MEDIA_SPECIFIC_NOTIFICATION |
NDISUIOPInvokes.NDISUIO_NOTIFICATION_MEDIA_CONNECT |
NDISUIOPInvokes.NDISUIO_NOTIFICATION_MEDIA_DISCONNECT |
NDISUIOPInvokes.NDISUIO_NOTIFICATION_BIND |
NDISUIOPInvokes.NDISUIO_NOTIFICATION_UNBIND;
UInt32 xcount = 0;
if (!NDISUIOPInvokes.DeviceIoControl(ndisAccess,
NDISUIOPInvokes.IOCTL_NDISUIO_REQUEST_NOTIFICATION,
ndisRequestNotification.getBytes(),
NDISUIO_REQUEST_NOTIFICATION.Size,
null, 0, ref xcount, IntPtr.Zero))
{
System.Diagnostics.Debug.WriteLine(this, "Error in DeviceIoControl to request notifications!");
}
// Each notification will be of this type.
NDISUIO_DEVICE_NOTIFICATION ndisDeviceNotification =
new NDISUIO_DEVICE_NOTIFICATION();
// Wait for the queue to be signaled. When it is, decode
// the message and call any listeners for it. If the
// queue closes suddenly, that's our cue to exit, shutting
// down NDISUIO notifications before we leave.
PointToPointMsgQueue q = mq;
while (mq != null) // Check the global object here.
{
// Wait. On return, true indicates that the queue is
// signaled; false is a chance to check whether we should
// exit.
if (q.Wait(-1))
{
// Read the event data.
int bytes = 0;
PointToPointMsgQueueFlags readFlags = 0;
if (q.ReadMsgQueue(ndisDeviceNotification.getBytes(),
NDISUIO_DEVICE_NOTIFICATION.Size,
ref bytes, -1, ref readFlags))
{
// Handle the event.
OnAdapterNotification(new AdapterNotificationArgs(
ndisDeviceNotification.ptcDeviceName,
(NdisNotificationType)ndisDeviceNotification.dwNotificationType));
}
}
else
{
System.Diagnostics.Debug.WriteLine(this, "mq is null in monitoring thread. Exiting...");
}
}
System.Diagnostics.Debug.WriteLine(this, "exiting AdapterStatusMonitor thread.");
if (!NDISUIOPInvokes.DeviceIoControl(ndisAccess,
NDISUIOPInvokes.IOCTL_NDISUIO_CANCEL_NOTIFICATION,
null, 0,
null, 0, ref xcount, IntPtr.Zero))
{
System.Diagnostics.Debug.WriteLine(this, "Error in DeviceIoControl to stop notifications!");
// ????
}
// Don't forget to close our handle to NDISUIO.
FileEx.CloseHandle(ndisAccess);
}