[tfaber] 71080: [SHELL32] - Correctly handle NULL pidls in CDesktopFolder::CompareIDs and CDrivesFolder::CompareIDs. Based on a patch by Sylvain Deverre. CORE-10745 #resolve CORE-10747

Author: tfaber
Date: Wed Mar 30 11:11:37 2016
New Revision: 71080

URL: http://svn.reactos.org/svn/reactos?rev=71080&view=rev
Log:
[SHELL32]
- Correctly handle NULL pidls in CDesktopFolder::CompareIDs and CDrivesFolder::CompareIDs. Based on a patch by Sylvain Deverre.
CORE-10745 #resolve
CORE-10747

Modified:
    trunk/reactos/dll/win32/shell32/folders/CDesktopFolder.cpp
    trunk/reactos/dll/win32/shell32/folders/CDrivesFolder.cpp

Modified: trunk/reactos/dll/win32/shell32/folders/CDesktopFolder.cpp
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/shell32/folders/C...
==============================================================================
--- trunk/reactos/dll/win32/shell32/folders/CDesktopFolder.cpp	[iso-8859-1] (original)
+++ trunk/reactos/dll/win32/shell32/folders/CDesktopFolder.cpp	[iso-8859-1] Wed Mar 30 11:11:37 2016
@@ -463,6 +463,12 @@
  */
 HRESULT WINAPI CDesktopFolder::CompareIDs(LPARAM lParam, PCUIDLIST_RELATIVE pidl1, PCUIDLIST_RELATIVE pidl2)
 {
+    if (!pidl1 || !pidl2)
+    {
+        ERR("Got null pidl pointer (%Ix %p %p)!\n", lParam, pidl1, pidl2);
+        return E_INVALIDARG;
+    }
+
     if (_ILIsSpecialFolder(pidl1) || _ILIsSpecialFolder(pidl2))
         return SHELL32_CompareGuidItems(this, lParam, pidl1, pidl2);

Modified: trunk/reactos/dll/win32/shell32/folders/CDrivesFolder.cpp
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/shell32/folders/C...
==============================================================================
--- trunk/reactos/dll/win32/shell32/folders/CDrivesFolder.cpp	[iso-8859-1] (original)
+++ trunk/reactos/dll/win32/shell32/folders/CDrivesFolder.cpp	[iso-8859-1] Wed Mar 30 11:11:37 2016
@@ -298,6 +298,12 @@

HRESULT WINAPI CDrivesFolder::CompareIDs(LPARAM lParam, PCUIDLIST_RELATIVE pidl1, PCUIDLIST_RELATIVE pidl2)
 {
+    if (!pidl1 || !pidl2)
+    {
+        ERR("Got null pidl pointer (%Ix %p %p)!\n", lParam, pidl1, pidl2);
+        return E_INVALIDARG;
+    }
+
     if (_ILIsSpecialFolder(pidl1) || _ILIsSpecialFolder(pidl2))
         return SHELL32_CompareGuidItems(this, lParam, pidl1, pidl2);