80 lines
1.4 KiB
C++
80 lines
1.4 KiB
C++
|
/*++
|
||
|
|
|
||
|
|
Copyright (c) 2002 Microsoft Corporation
|
||
|
|
|
||
|
|
Module Name:
|
||
|
|
|
||
|
|
BackupExec.cpp
|
||
|
|
|
||
|
|
Abstract:
|
||
|
|
|
||
|
|
BackupExec is calling SendMessageW with a TVM_GETITEM message but has an
|
||
|
|
uninitialized lParam at one point. We detect this and initalize the values.
|
||
|
|
|
||
|
|
Notes:
|
||
|
|
|
||
|
|
This is an app specific shim.
|
||
|
|
|
||
|
|
History:
|
||
|
|
|
||
|
|
09/25/2002 mnikkel Created
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
#include "precomp.h"
|
||
|
|
|
||
|
|
IMPLEMENT_SHIM_BEGIN(BackupExec)
|
||
|
|
#include "ShimHookMacro.h"
|
||
|
|
|
||
|
|
APIHOOK_ENUM_BEGIN
|
||
|
|
APIHOOK_ENUM_ENTRY(SendMessageW)
|
||
|
|
APIHOOK_ENUM_END
|
||
|
|
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Make sure the lParam is correct.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
BOOL
|
||
|
|
APIHOOK(SendMessageW)(
|
||
|
|
HWND hWnd,
|
||
|
|
UINT uMsg, // TVM_GETITEM
|
||
|
|
WPARAM wParam,
|
||
|
|
LPARAM lParam
|
||
|
|
)
|
||
|
|
{
|
||
|
|
if (uMsg == TVM_GETITEM)
|
||
|
|
{
|
||
|
|
if (lParam != NULL)
|
||
|
|
{
|
||
|
|
LPTVITEMEX lpItem = (LPTVITEMEX)lParam;
|
||
|
|
|
||
|
|
// On TVIF_TEXT, the size in cchTextMax should be reasonable, if not then init.
|
||
|
|
if ((lpItem->mask & TVIF_TEXT) &&
|
||
|
|
((lpItem->cchTextMax > 300) || lpItem->cchTextMax <= 0))
|
||
|
|
{
|
||
|
|
LOGN(eDbgLevelError, "Correcting invalid TVITEMEX struct, max text %d.", lpItem->cchTextMax);
|
||
|
|
lpItem->mask &= !TVIF_TEXT;
|
||
|
|
lpItem->pszText = NULL;
|
||
|
|
lpItem->cchTextMax = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return ORIGINAL_API(SendMessageW)(hWnd, uMsg, wParam, lParam);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Register hooked functions
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
HOOK_BEGIN
|
||
|
|
APIHOOK_ENTRY(USER32.DLL, SendMessageW)
|
||
|
|
HOOK_END
|
||
|
|
|
||
|
|
IMPLEMENT_SHIM_END
|
||
|
|
|