public bool UnHook()
{
if (Status == EHookStatus.Inactive)
{
return(false);
}
Status = EHookStatus.Inactive;
if (_hookIsLiveTimer != null)
{
_hookIsLiveTimer.Dispose();
_hookIsLiveTimer = null;
}
_unhookWaitEvent.WaitOne(1000);
if (_ipcChannel != null)
{
ChannelServices.UnregisterChannel(_ipcChannel);
_ipcChannel.StopListening(null);
_ipcChannel = null;
}
Thread.Sleep(100);
SetDefaults();
return(true);
}
private void OnStatusChanged(EHookStatus status)
{
var handler = StatusChanged;
if (handler != null)
{
handler(status);
}
}
public bool Hook(int processId)
{
if (Status == EHookStatus.Active || Status == EHookStatus.Pending)
{
return(false);
}
Status = EHookStatus.Pending;
_hookedProcessId = processId;
_interface = new RemoteInterface
(
(x, y) => _systemDeviceId(x, y),
CanUnload,
HookInstalled,
OnComplete,
OnError
);
_ipcChannel = RemoteHooking.IpcCreateServer(ref _channelName, WellKnownObjectMode.Singleton, _interface);
try
{
RemoteHooking.Inject(
processId,
InjectionOptions.DoNotRequireStrongName,
typeof(IMultimediaDeviceEnumerator).Assembly.Location,
typeof(IMultimediaDeviceEnumerator).Assembly.Location,
_channelName);
//2000ms due time. This will give the hook 2seconds to become active
//then it will check every 500ms
_hookIsLiveTimer = new Timer(HookIsLive, null, 2000, 500);
_lastMessageCount = -1;
_completeSignalled = false;
return(true);
}
catch (Exception ex)
{
Status = EHookStatus.Inactive;
Error?.Invoke(_hookedProcessId, ex);
}
return(false);
}
public DefaultDeviceHook(Func <DataFlow, Role, string> systemDeviceId)
{
_systemDeviceId = systemDeviceId;
Status = EHookStatus.Inactive;
_unhookWaitEvent = new ManualResetEvent(false);
}
private void HookInstalled()
{
Status = EHookStatus.Active;
SetDefaults();
}