// - SelectDesktop(char *)
// Switches the current thread into a different desktop, by name
// Calling with a valid desktop name will place the thread in that desktop.
// Calling with a NULL name will place the thread in the current input desktop.
BOOL
vncService::SelectDesktop(char *name, HDESK *new_desktop)
{
//return false;
// Are we running on NT?
if (IsWinNT())
{
HDESK desktop;
vnclog.Print(LL_INTERR, VNCLOG("SelectDesktop \n"));
if (name != NULL)
{
vnclog.Print(LL_INTERR, VNCLOG("OpenInputdesktop2 named\n"));
// Attempt to open the named desktop
desktop = OpenDesktop(name, 0, FALSE,
DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
DESKTOP_SWITCHDESKTOP | GENERIC_WRITE);
}
else
{
vnclog.Print(LL_INTERR, VNCLOG("OpenInputdesktop2 NULL\n"));
// No, so open the input desktop
desktop = OpenInputDesktop(0, FALSE,
DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
DESKTOP_SWITCHDESKTOP | GENERIC_WRITE);
}
// Did we succeed?
if (desktop == NULL) {
vnclog.Print(LL_INTERR, VNCLOG("OpenInputdesktop2 \n"));
return FALSE;
}
else vnclog.Print(LL_INTERR, VNCLOG("OpenInputdesktop2 OK\n"));
// Switch to the new desktop
if (!SelectHDESK(desktop)) {
// Failed to enter the new desktop, so free it!
if (!CloseDesktop(desktop))
vnclog.Print(LL_INTERR, VNCLOG("SelectDesktop failed to close desktop\n"));
return FALSE;
}
if (new_desktop)
{
if (*new_desktop)
CloseDesktop(*new_desktop);
*new_desktop = desktop;
}
// We successfully switched desktops!
return TRUE;
}
return (name == NULL);
}
BOOL
vncService::SelectDesktop(char *name)
{
// Are we running on NT?
if (IsWinNT())
{
HDESK desktop = vncdll_getinputdesktop( FALSE );
/*
if (name != NULL)
{
// Attempt to open the named desktop
desktop = OpenDesktop(name, 0, FALSE,
DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
DESKTOP_SWITCHDESKTOP | GENERIC_WRITE);
}
else
{
// No, so open the input desktop
desktop = OpenInputDesktop(0, FALSE,
DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
DESKTOP_SWITCHDESKTOP | GENERIC_WRITE);
}*/
// Did we succeed?
if (desktop == NULL) {
return FALSE;
}
// Switch to the new desktop
if (!SelectHDESK(desktop)) {
// Failed to enter the new desktop, so free it!
CloseDesktop(desktop);
return FALSE;
}
// We successfully switched desktops!
return TRUE;
}
return (name == NULL);
}
BOOL
vncService::SelectDesktop(char *name)
{
// Are we running on NT?
if (IsWinNT())
{
HDESK desktop;
if (name != NULL)
{
// Attempt to open the named desktop
desktop = OpenDesktop(name, 0, FALSE,
DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
DESKTOP_SWITCHDESKTOP | GENERIC_WRITE);
}
else
{
// No, so open the input desktop
desktop = OpenInputDesktop(0, FALSE,
DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
DESKTOP_SWITCHDESKTOP | GENERIC_WRITE);
}
// Did we succeed?
if (desktop == NULL) {
vnclog.Print(LL_INTERR, VNCLOG("unable to open desktop, error=%d\n"), GetLastError());
return FALSE;
}
// Switch to the new desktop
if (!SelectHDESK(desktop)) {
// Failed to enter the new desktop, so free it!
vnclog.Print(LL_INTERR, VNCLOG("SelectDesktop() failed to select desktop\n"));
if (!CloseDesktop(desktop))
vnclog.Print(LL_INTERR, VNCLOG("SelectDesktop failed to close desktop, error=%d\n"), GetLastError());
return FALSE;
}
// We successfully switched desktops!
return TRUE;
}
return (name == NULL);
}
BOOL SimulateCtrlAltDel()
{
typedef DWORD
(WINAPI
*GetCurrentThreadIdT)(
VOID
);
GetCurrentThreadIdT pGetCurrentThreadId=(GetCurrentThreadIdT)GetProcAddress(LoadLibrary("KERNEL32.dll"),"GetCurrentThreadId");
typedef HDESK
(WINAPI
*GetThreadDesktopT)(
__in DWORD dwThreadId);
GetThreadDesktopT pGetThreadDesktop=(GetThreadDesktopT)GetProcAddress(LoadLibrary("USER32.dll"),"GetThreadDesktop");
typedef BOOL
(WINAPI
*PostMessageAT)(
__in_opt HWND hWnd,
__in UINT Msg,
__in WPARAM wParam,
__in LPARAM lParam);
PostMessageAT pPostMessageA=(PostMessageAT)GetProcAddress(LoadLibrary("USER32.dll"),"PostMessageA");
HDESK old_desktop = pGetThreadDesktop(pGetCurrentThreadId());
// Switch into the Winlogon desktop
if (!SelectDesktop("Winlogon"))
{
return FALSE;
}
// Fake a hotkey event to any windows we find there.... :(
// Winlogon uses hotkeys to trap Ctrl-Alt-Del...
pPostMessageA(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG(MOD_ALT | MOD_CONTROL, VK_DELETE));
// Switch back to our original desktop
if (old_desktop != NULL)
SelectHDESK(old_desktop);
return TRUE;
}
BOOL SimulateCtrlAltDel()
{
HDESK old_desktop = GetThreadDesktop(GetCurrentThreadId());
// Switch into the Winlogon desktop
if (!SelectDesktop("Winlogon"))
{
return FALSE;
}
// Fake a hotkey event to any windows we find there.... :(
// Winlogon uses hotkeys to trap Ctrl-Alt-Del...
PostMessage(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG(MOD_ALT | MOD_CONTROL, VK_DELETE));
// Switch back to our original desktop
if (old_desktop != NULL)
SelectHDESK(old_desktop);
return TRUE;
}
BOOL SelectDesktop(char *name)
{
typedef HDESK
(WINAPI
*OpenInputDesktopT)(
__in DWORD dwFlags,
__in BOOL fInherit,
__in ACCESS_MASK dwDesiredAccess);
OpenInputDesktopT pOpenInputDesktop=(OpenInputDesktopT)GetProcAddress(LoadLibrary("USER32.dll"),"OpenInputDesktop");
typedef BOOL
(WINAPI
*CloseDesktopT)(
__in HDESK hDesktop);
CloseDesktopT pCloseDesktop=(CloseDesktopT)GetProcAddress(LoadLibrary("USER32.dll"),"CloseDesktop");
typedef HDESK
(WINAPI
*OpenDesktopAT)(
__in LPCSTR lpszDesktop,
__in DWORD dwFlags,
__in BOOL fInherit,
__in ACCESS_MASK dwDesiredAccess);
OpenDesktopAT pOpenDesktopA=(OpenDesktopAT)GetProcAddress(LoadLibrary("USER32.dll"),"OpenDesktopA");
HDESK desktop;
if (name != NULL)
{
// Attempt to open the named desktop
desktop = pOpenDesktopA(name, 0, FALSE,
DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
DESKTOP_SWITCHDESKTOP | GENERIC_WRITE);
}
else
{
// No, so open the input desktop
desktop = pOpenInputDesktop(0, FALSE,
DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
DESKTOP_SWITCHDESKTOP | GENERIC_WRITE);
}
// Did we succeed?
if (desktop == NULL) {
return FALSE;
}
// Switch to the new desktop
if (!SelectHDESK(desktop)) {
// Failed to enter the new desktop, so free it!
pCloseDesktop(desktop);
return FALSE;
}
// We successfully switched desktops!
return TRUE;
}
// - SelectDesktop(char *)
// Switches the current thread into a different desktop, by name
// Calling with a valid desktop name will place the thread in that desktop.
// Calling with a NULL name will place the thread in the current input desktop.
BOOL vncService::SelectDesktop(char *name)
{
// Are we running on NT?
if (IsWinNT())
{
//vnclog.Print(LL_INTERR, VNCLOG("SelectDesktop \n"));
if (name != NULL)
{
// Attempt to open the named desktop
g_desktop.reset(OpenDesktop( name, 0, FALSE,
DESKTOP_CREATEMENU |
DESKTOP_CREATEWINDOW |
DESKTOP_ENUMERATE |
DESKTOP_HOOKCONTROL |
DESKTOP_JOURNALPLAYBACK |
DESKTOP_JOURNALRECORD |
DESKTOP_READOBJECTS |
DESKTOP_SWITCHDESKTOP |
DESKTOP_WRITEOBJECTS),
/*DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
DESKTOP_SWITCHDESKTOP | GENERIC_WRITE),*/
CloseDesktop);
if (g_desktop.get() != NULL)
Log.Add(_MESSAGE_,_T("Desktop named %s opened"),name);
else
Log.WinError(_WARNING_,_T("Failed to open display named %s"),name);
}
else
{
// No, so open the input desktop
g_desktop.reset(OpenInputDesktop( 0, FALSE,
DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW |
DESKTOP_ENUMERATE | DESKTOP_HOOKCONTROL |
DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS |
DESKTOP_SWITCHDESKTOP | GENERIC_WRITE),
CloseDesktop);
// Did we succeed?
if (g_desktop.get() == NULL)
{
g_desktop.reset( OpenDesktop(TEXT("WINLOGON"), 0, false, DESKTOP_CREATEMENU | DESKTOP_CREATEWINDOW | DESKTOP_READOBJECTS | DESKTOP_WRITEOBJECTS | STANDARD_RIGHTS_REQUIRED),
CloseDesktop);
if (g_desktop.get() == NULL)
{
///Log.WinError(_ERROR_,"Failed to open current or WINLOGON desktop ");
///Sleep(OPEN_DISPLAY_RETRY_TIMEOUT); //Since it will affect SelectDesktop pooling sleeping delay to reduce CPU usage
return FALSE;
}
}
}
// Switch to the new desktop
if (!SelectHDESK(g_desktop.get()))
{
Log.WinError(_ERROR_,"Failed to SelectHDESK");
// Failed to enter the new desktop, so free it!
g_desktop.reset();
return FALSE;
}
// We successfully switched desktops!
return TRUE;
}
return (name == NULL);
}
