[gadamopoulos] 58514: [win32k] - Store the session id in WINSTATION_OBJECT when we create a window station. - Don't allow switching to a desktop that belongs to a different session This is a modifi...

Author: gadamopoulos
Date: Sat Mar 16 10:12:16 2013
New Revision: 58514

URL: http://svn.reactos.org/svn/reactos?rev=58514&view=rev
Log:
[win32k]
- Store the session id in WINSTATION_OBJECT when we create a window station.
- Don't allow switching to a desktop that belongs to a different session
This is a modified version of the patch from CORE-5531

Modified:
    trunk/reactos/win32ss/user/ntuser/desktop.c
    trunk/reactos/win32ss/user/ntuser/winsta.c
    trunk/reactos/win32ss/user/ntuser/winsta.h

Modified: trunk/reactos/win32ss/user/ntuser/desktop.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/deskto…
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/desktop.c [iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/desktop.c [iso-8859-1] Sat Mar 16 10:12:16 2013
@@ -1632,6 +1632,12 @@
       RETURN(FALSE);
    }
 
+   if (PsGetCurrentProcessSessionId() != pdesk->rpwinstaParent->dwSessionId)
+   {
+      ERR("NtUserSwitchDesktop called for a desktop of a different
session\n");
+      RETURN(FALSE);  
+   }
+
    if(pdesk == gpdeskInputDesktop)
    {
        WARN("NtUserSwitchDesktop called for active desktop\n");

Modified: trunk/reactos/win32ss/user/ntuser/winsta.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/winsta…
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/winsta.c [iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/winsta.c [iso-8859-1] Sat Mar 16 10:12:16 2013
@@ -432,6 +432,7 @@
    Status = RtlCreateAtomTable(37, &WindowStationObject->AtomTable);
    WindowStationObject->SystemMenuTemplate = (HANDLE)0;
    WindowStationObject->Name = WindowStationName;
+   WindowStationObject->dwSessionId = NtCurrentPeb()->SessionId;
 
    if (InputWindowStation == NULL)
    {

Modified: trunk/reactos/win32ss/user/ntuser/winsta.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/winsta…
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/winsta.h [iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/winsta.h [iso-8859-1] Sat Mar 16 10:12:16 2013
@@ -9,6 +9,8 @@
 
 typedef struct _WINSTATION_OBJECT
 {
+    DWORD dwSessionId;
+
     KSPIN_LOCK Lock;
     UNICODE_STRING Name;
     LIST_ENTRY DesktopListHead;