64 lines
922 B
C++
64 lines
922 B
C++
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/*++
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Copyright (c) 2002 Microsoft Corporation
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Module Name:
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AutoCad.cpp
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Abstract:
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Prevent AV when IsEmptyRect is called with a bad pointer. This fixes a hard to
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repro Watson bug.
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Notes:
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This is an app specific shim.
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History:
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02/13/2002 linstev Created
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(AutoCad)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(IsRectEmpty)
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APIHOOK_ENUM_END
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/*++
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IsEmptyRect
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--*/
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BOOL
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APIHOOK(IsRectEmpty)(
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CONST RECT *lprc
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)
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{
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if (IsBadReadPtr(lprc, sizeof(RECT))) {
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LOGN(eDbgLevelInfo, "[IsRectEmpty] invalid lprc pointer, returning TRUE");
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return TRUE;
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}
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return ORIGINAL_API(IsRectEmpty)(lprc);
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}
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/*++
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Register hooked functions
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--*/
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HOOK_BEGIN
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APIHOOK_ENTRY(USER32.DLL, IsRectEmpty)
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HOOK_END
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IMPLEMENT_SHIM_END
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