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implement permission checking in SetShellWindow()

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svn path=/trunk/; revision=5479
This commit is contained in:
Martin Fuchs 2003-08-09 08:57:13 +00:00
parent 3eb9a3bce5
commit b6d1f250bb
1 changed files with 9 additions and 2 deletions
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11
reactos/lib/user32/misc/desktop.c
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@ -1,4 +1,4 @@
/* $Id: desktop.c,v 1.18 2003/08/09 08:42:35 mf Exp $
/* $Id: desktop.c,v 1.19 2003/08/09 08:57:13 mf Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS user32.dll
@ -309,6 +309,7 @@ SwitchDesktop(
/* globally stored handle to the shell window */
HWND hwndShellWindow = 0;
DWORD pidShellWindow = 0;
/*
@ -327,11 +328,17 @@ GetShellWindow(VOID)
BOOL STDCALL
SetShellWindow(HWND hwnd)
{
if (hwndShellWindow)
/* test if we are permitted to change the shell window */
if (pidShellWindow && GetCurrentProcessId()!=pidShellWindow)
return FALSE;
hwndShellWindow = hwnd;
if (hwnd)
pidShellWindow = GetCurrentProcessId(); /* request shell window for the calling process */
else
pidShellWindow = 0; /* shell window is now free for other processes. */
return TRUE;
}