private static void CreateProcess(
string lpApplicationName,
string lpCommandLine,
bool bInheritHandles,
uint dwCreationFlags,
ref Syscalls.STARTUPINFO lpStartupInfo,
out Syscalls.PROCESS_INFORMATION lpProcessInformation)
{
int retval;
retval = Syscalls._CreateProcess(
lpApplicationName,
lpCommandLine,
new IntPtr(0), new IntPtr(0),
bInheritHandles,
dwCreationFlags,
new IntPtr(0), null,
ref lpStartupInfo,
out lpProcessInformation);
if (retval == 0)
{
int errcode = Marshal.GetLastWin32Error();
throw new Exception("Cannot create process (" + errcode + ": " + Syscalls.GetLastErrorStringMessage() + ")");
}
}
/// <summary>
/// Handles when a Start Ticket is received.
/// </summary>
/// <param name="_context"></param>
private void OnStartTicketResponse(KasQuery ctx)
{
Debug.Assert(m_state == AppSharingState.StartTicket);
AnpMsg cmd = ctx.Cmd;
AnpMsg res = ctx.Res;
if (m_state != AppSharingState.StartTicket)
{
Logging.Log(2, "Received spurious Screen Sharing Start ticket.");
return;
}
if (res.Type == KAnpType.KANP_RES_VNC_START_TICKET)
{
m_ticket = res.Elements[0].Bin;
/* Start MetaVNC (specify the desired window's handle)*/
int handle = Int32.Parse((String)ctx.MetaData[0]);
bool supportSession = (bool)ctx.MetaData[2];
String vncServerPath = "\"" + Base.GetKwmInstallationPath() + @"vnc\kappserver.exe" + "\"";
String args = (handle == 0) ? " -shareall" : " -sharehwnd " + (String)ctx.MetaData[0];
// If a window is being shared (not the desktop), set
// it visible and in foreground.
if (handle != 0)
{
IntPtr hWnd = new IntPtr(handle);
if (Syscalls.IsIconic(hWnd))
Syscalls.ShowWindowAsync(hWnd, (int)Syscalls.WindowStatus.SW_RESTORE);
Base.KSetForegroundWindow(hWnd);
}
/* Remove any indication of previous server's listening port */
RegistryKey port = Base.GetKwmCURegKey();
port.DeleteValue(m_portRegItem, false);
port.DeleteValue(m_portRegItemWritten, false);
port.Close();
// Set registry options in order to allow/deny
// remote control.
SetSupportSessionMode(supportSession);
Logging.Log("Starting the first instance of MetaVNC (no args).");
m_serverProcess = new RawProcess(vncServerPath);
m_serverProcess.CreationFlags = (uint)Syscalls.CREATION_FLAGS.CREATE_NO_WINDOW;
m_serverProcess.InheritHandles = false;
Syscalls.STARTUPINFO si = new Syscalls.STARTUPINFO();
si.dwFlags = 1;
m_serverProcess.StartupInfo = si;
m_serverProcess.ProcessEnd += HandleOnProcessEnd;
m_serverProcess.Start();
Logging.Log("Started.");
/* Wait until we can get our hands on the process's window handle */
int retries = 15;
bool found = false;
while (retries > 0)
{
Logging.Log("Trying to start WinVNC ( " + retries + ")");
IntPtr serverHandle = Syscalls.FindWindow("WinVNC Tray Icon", 0);
if (serverHandle != IntPtr.Zero)
{
found = true;
break;
}
System.Threading.Thread.Sleep(250);
retries--;
}
if (!found)
throw new Exception("Screen sharing error: server could not be started.");
/* Start another process of metaVNC.
* This is needed to pass the window handle
* we want, it was easier to do this that way
* than to pass it directly on the cmd line when
* starting the process the first time. */
Logging.Log("Starting MetaVNC for the second time (this is normal): " + vncServerPath + args);
m_dummyServerProcess = new RawProcess(vncServerPath + args);
m_dummyServerProcess.CreationFlags = (uint)Syscalls.CREATION_FLAGS.CREATE_NO_WINDOW;
m_dummyServerProcess.InheritHandles = false;
m_dummyServerProcess.StartupInfo = si;
m_dummyServerProcess.ProcessEnd += HandleOnProcessEnd;
m_dummyServerProcess.Start();
// Find out on which port we need to tell ktlstunnel to
// connect to the server
RegistryKey kwmKey = Base.GetKwmCURegKey();
object readPort = null;
object portOK = null;
// Actively poll the synchronization key for 6 seconds.
retries = 30;
found = false;
while (retries > 0)
{
portOK = kwmKey.GetValue(m_portRegItemWritten);
if (portOK != null)
{
found = true;
break;
}
System.Threading.Thread.Sleep(200);
retries--;
}
if (!found)
{
if (kwmKey != null)
kwmKey.Close();
ResetToIdle();
Misc.KwmTellUser("Screen sharing error: a timeout occured while waiting for the server's listening port.");
return;
}
// At this stage we can presume the port was
// correctly really written by the VNC server.
readPort = kwmKey.GetValue(m_portRegItem);
kwmKey.Close();
if (port == null)
{
ResetToIdle();
Misc.KwmTellUser("Screen sharing error: unable to read the server's listening port.");
return;
}
Logging.Log("Screen Sharing server's port: " + (int)readPort);
/* Connect a new tunnel */
m_tunnel = Helper.CreateTunnel();
m_tunnel.Connect("localhost", (int)readPort);
/* Negociate role */
AnpMsg inMsg = Helper.NewKAnpMsg(KAnpType.KANP_CMD_MGT_SELECT_ROLE);
inMsg.AddUInt32(KAnpType.KANP_KCD_ROLE_APP_SHARE);
m_tunnel.SendMsg(inMsg);
AnpMsg outMsg = m_tunnel.GetMsg();
if (outMsg.Type == KAnpType.KANP_RES_FAIL)
{
ResetToIdle();
Misc.KwmTellUser(outMsg.Elements[1].String);
return;
}
Debug.Assert(outMsg.Type == KAnpType.KANP_RES_OK);
AnpMsg startSession = Helper.NewKAnpMsg(KAnpType.KANP_CMD_VNC_START_SESSION);
startSession.AddBin(m_ticket);
startSession.AddString((String)ctx.MetaData[1]);
m_tunnel.SendMsg(startSession);
outMsg = m_tunnel.GetMsg();
if (outMsg.Type == KAnpType.KANP_RES_FAIL)
{
ResetToIdle();
Misc.KwmTellUser(outMsg.Elements[1].String);
return;
}
Debug.Assert(outMsg.Type == KAnpType.KANP_RES_VNC_START_SESSION);
m_createdSessionID = outMsg.Elements[0].UInt64;
/* Disconnect tunnel so it can connect to metaVNC server */
Logging.Log("About to call disconnect on ktlstunnel.");
m_tunnel.Disconnect();
CurrentState = AppSharingState.Started;
m_connectedSessionID = 0;
StopInactivityMonitor();
// 10 minutes
inactivityMonitor = MonitorCreator.CreateInstance(MonitorType.GlobalHookMonitor);
inactivityMonitor.Interval = 600000;
inactivityMonitor.Elapsed += new ElapsedEventHandler(HandleSessionTimeout);
inactivityMonitor.Enabled = true;
}
else if (res.Type == KAnpType.KANP_RES_FAIL)
{
ResetToIdle();
Misc.KwmTellUser(res.Elements[1].String);
}
else
{
Logging.Log(2, "unexpected response in OnStartTicketResponse");
}
}