Leaked source code of windows server 2003
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/*++
Copyright (c) 2000 Microsoft Corporation
Module Name:
CheckTAPIVersionParameters.cpp
Abstract:
Hooks the call to lineNegotiateAPIVersion so that device 0 doesn't fail
causing the application to stop querying devices.
Notes:
This is an app specific shim. Could potentially be general, but requires
research.
History:
07/17/2000 a-brienw Created
--*/
#include "precomp.h"
IMPLEMENT_SHIM_BEGIN(ViperRacing)
#include "ShimHookMacro.h"
APIHOOK_ENUM_BEGIN
APIHOOK_ENUM_ENTRY(lineNegotiateAPIVersion)
APIHOOK_ENUM_END
/*++
Hook lineNegotiateAPIVersion to reverse the order of the devices.
--*/
LONG
APIHOOK(lineNegotiateAPIVersion)(
HLINEAPP hLineApp,
DWORD dwDeviceID,
DWORD dwAPILowVersion,
DWORD dwAPIHighVersion,
LPDWORD lpdwAPIVersion,
LPLINEEXTENSIONID lpExtensionID
)
{
if (dwDeviceID == 0) dwDeviceID = 1;
return ORIGINAL_API(lineNegotiateAPIVersion)(
hLineApp,
dwDeviceID,
dwAPILowVersion,
dwAPIHighVersion,
lpdwAPIVersion,
lpExtensionID);
}
/*++
Register hooked functions
--*/
HOOK_BEGIN
APIHOOK_ENTRY(TAPI32.DLL, lineNegotiateAPIVersion)
HOOK_END
IMPLEMENT_SHIM_END