105 lines
2.2 KiB
C++
105 lines
2.2 KiB
C++
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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MECCommander.cpp
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Abstract:
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This dll prevents the MEC Commander install program from successfully
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calling the cpuid.exe. This is because the cpuid.exe can AV's with a
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divide by 0.
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Notes:
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This is an app specific shim.
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History:
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11/18/1999 philipdu Created
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(MECCommander)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(CreateProcessA)
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APIHOOK_ENUM_END
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/*++
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We do not want to run this application since it AV's with a divide by zero
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calculation. The only purpose for this exe is to time the CPU. Since the
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final result of this calculation is a string in a dialog box we can safely
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bypass this. The app puts a string "Pentinum 166 or Better recommented" in
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the cases where it cannot get the CPU frequency. The interesting thing
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here is that the app will actually run better with this patch since this
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cpuid exe also faults on 9x.
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--*/
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BOOL
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APIHOOK(CreateProcessA)(
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LPCSTR lpApplicationName,
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LPSTR lpCommandLine,
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LPSECURITY_ATTRIBUTES lpProcessAttributes,
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LPSECURITY_ATTRIBUTES lpThreadAttributes,
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BOOL bInheritHandles,
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DWORD dwCreationFlags,
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LPVOID lpEnvironment,
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LPCSTR lpCurrentDirectory,
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LPSTARTUPINFOA lpStartupInfo,
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LPPROCESS_INFORMATION lpProcessInformation
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)
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{
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BOOL bRet;
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CSTRING_TRY
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{
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AppAndCommandLine acl(lpApplicationName, lpCommandLine);
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if (acl.GetApplicationName().CompareNoCase(L"cpuid.exe") == 0)
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{
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return FALSE;
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}
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}
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CSTRING_CATCH
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{
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// Do nothing
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}
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bRet = ORIGINAL_API(CreateProcessA)(
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lpApplicationName,
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lpCommandLine,
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lpProcessAttributes,
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lpThreadAttributes,
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bInheritHandles,
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dwCreationFlags,
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lpEnvironment,
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lpCurrentDirectory,
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lpStartupInfo,
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lpProcessInformation);
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return bRet;
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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(Kernel32.DLL, CreateProcessA )
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HOOK_END
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IMPLEMENT_SHIM_END
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