reactos/win32ss/user/ntuser/console.c

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS Win32k subsystem
* PURPOSE: Console support functions for CONSRV
* FILE: win32ss/user/ntuser/console.c
* PROGRAMMER: Hermes Belusca-Maito (hermes.belusca@sfr.fr)
*/
#include <win32k.h>
DBG_DEFAULT_CHANNEL(UserMisc);
NTSTATUS
APIENTRY
NtUserConsoleControl(
IN CONSOLECONTROL ConsoleCtrl,
IN PVOID ConsoleCtrlInfo,
IN ULONG ConsoleCtrlInfoLength)
{
NTSTATUS Status = STATUS_SUCCESS;
/* Allow only the Console Server to perform this operation (via CSRSS) */
if (PsGetCurrentProcess() != gpepCSRSS)
return STATUS_ACCESS_DENIED;
UserEnterExclusive();
switch (ConsoleCtrl)
{
case ConsoleCtrlDesktopConsoleThread:
{
DESKTOP_CONSOLE_THREAD DesktopConsoleThreadInfo;
PDESKTOP Desktop = NULL;
ULONG_PTR OldThreadId;
if (ConsoleCtrlInfoLength != sizeof(DesktopConsoleThreadInfo))
{
Status = STATUS_INFO_LENGTH_MISMATCH;
break;
}
_SEH2_TRY
{
ProbeForWrite(ConsoleCtrlInfo, ConsoleCtrlInfoLength, sizeof(USHORT));
DesktopConsoleThreadInfo = *(PDESKTOP_CONSOLE_THREAD)ConsoleCtrlInfo;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
_SEH2_YIELD(break);
}
_SEH2_END;
/* Reference the desktop */
Status = ObReferenceObjectByHandle(DesktopConsoleThreadInfo.DesktopHandle,
0,
ExDesktopObjectType,
UserMode,
(PVOID*)&Desktop,
NULL);
if (!NT_SUCCESS(Status)) break;
/* Save the old thread ID, it is always returned to the caller */
OldThreadId = Desktop->dwConsoleThreadId;
/* Set the new console input thread ID for this desktop if required */
if (DesktopConsoleThreadInfo.ThreadId != (ULONG_PTR)INVALID_HANDLE_VALUE)
{
Desktop->dwConsoleThreadId = DesktopConsoleThreadInfo.ThreadId;
}
/* Always return the old thread ID */
DesktopConsoleThreadInfo.ThreadId = OldThreadId;
/* Dereference the desktop */
ObDereferenceObject(Desktop);
/* Return the information back to the caller */
_SEH2_TRY
{
*(PDESKTOP_CONSOLE_THREAD)ConsoleCtrlInfo = DesktopConsoleThreadInfo;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
break;
}
case GuiConsoleWndClassAtom:
{
if (ConsoleCtrlInfoLength != sizeof(ATOM))
{
Status = STATUS_INFO_LENGTH_MISMATCH;
break;
}
_SEH2_TRY
{
ProbeForRead(ConsoleCtrlInfo, ConsoleCtrlInfoLength, sizeof(USHORT));
gaGuiConsoleWndClass = *(ATOM*)ConsoleCtrlInfo;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
break;
}
case ConsoleMakePalettePublic:
{
HPALETTE hPalette;
if (ConsoleCtrlInfoLength != sizeof(hPalette))
{
Status = STATUS_INFO_LENGTH_MISMATCH;
break;
}
_SEH2_TRY
{
ProbeForRead(ConsoleCtrlInfo, ConsoleCtrlInfoLength, sizeof(USHORT));
hPalette = *(HPALETTE*)ConsoleCtrlInfo;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
_SEH2_YIELD(break);
}
_SEH2_END;
/* Make the palette handle public */
GreSetObjectOwnerEx(hPalette,
GDI_OBJ_HMGR_PUBLIC,
GDIOBJFLAG_IGNOREPID);
break;
}
case ConsoleAcquireDisplayOwnership:
{
ERR("NtUserConsoleControl - ConsoleAcquireDisplayOwnership is UNIMPLEMENTED\n");
Status = STATUS_NOT_IMPLEMENTED;
break;
}
default:
ERR("Calling invalid control %d in NtUserConsoleControl\n", ConsoleCtrl);
Status = STATUS_INVALID_INFO_CLASS;
break;
}
UserLeave();
return Status;
}
/* EOF */