130 lines
3.2 KiB
C++
130 lines
3.2 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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WinNT4SP5VersionLie.cpp
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Abstract:
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This DLL APIHooks GetVersion and GetVersionEx so that they return Windows NT
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Service Pack 5 version credentials. Applications often check to ensure that
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they are running on a certain Win NTsystem, even though the current system
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is of higher build then the one they are checking for.
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Notes:
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This is a general purpose shim.
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History:
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11/10/1999 v-johnwh Created
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02/14/2002 mnikkel Converted to use strsafe.h
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(WinNT4SP5VersionLie)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(GetVersionExA)
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APIHOOK_ENUM_ENTRY(GetVersionExW)
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APIHOOK_ENUM_ENTRY(GetVersion)
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APIHOOK_ENUM_END
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#ifndef ARRAYSIZE
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#define ARRAYSIZE(x) (sizeof(x)/sizeof(x[0]))
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#endif
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/*++
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This stub function fixes up the OSVERSIONINFO structure that is
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returned to the caller with Windows NT Service Pack 5 credentials.
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--*/
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BOOL
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APIHOOK(GetVersionExA)(LPOSVERSIONINFOA lpVersionInformation)
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{
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BOOL bReturn = FALSE;
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if (ORIGINAL_API(GetVersionExA)(lpVersionInformation)) {
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// Fixup the structure with the NT data
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lpVersionInformation->dwMajorVersion = 4;
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lpVersionInformation->dwMinorVersion = 0;
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lpVersionInformation->dwBuildNumber = 1381;
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lpVersionInformation->dwPlatformId = VER_PLATFORM_WIN32_NT;
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//szCSDVersion is 128 TCHAR, our string fits with no problems.
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StringCchCopyA(lpVersionInformation->szCSDVersion,
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ARRAYSIZE(lpVersionInformation->szCSDVersion), "Service Pack 5");
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DPFN( eDbgLevelInfo, "GetVersionExA called. return NT4 SP5\n");
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bReturn = TRUE;
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}
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return bReturn;
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}
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/*++
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This stub function fixes up the OSVERSIONINFO structure that is returned to
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the caller with Win NT Service Pack 5 credentials. This is the
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wide-character version of GetVersionExW.
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--*/
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BOOL
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APIHOOK(GetVersionExW)(LPOSVERSIONINFOW lpVersionInformation)
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{
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BOOL bReturn = FALSE;
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if (ORIGINAL_API(GetVersionExW)(lpVersionInformation)) {
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// Fixup the structure with the Win NT Service Pack 5 data
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lpVersionInformation->dwMajorVersion = 4;
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lpVersionInformation->dwMinorVersion = 0;
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lpVersionInformation->dwBuildNumber = 1381;
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lpVersionInformation->dwPlatformId = VER_PLATFORM_WIN32_NT;
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//szCSDVersion is 128 TCHAR, our string fits with no problems.
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StringCchCopyW(lpVersionInformation->szCSDVersion,
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ARRAYSIZE(lpVersionInformation->szCSDVersion), L"Service Pack 5");
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DPFN( eDbgLevelInfo, "GetVersionExW called. return NT4 SP5\n");
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bReturn = TRUE;
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}
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return bReturn;
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}
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/*++
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This stub function returns Windows NT 4.0 credentials.
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--*/
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DWORD
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APIHOOK(GetVersion)()
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{
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DPFN( eDbgLevelInfo, "GetVersion called. return NT4 SP5\n");
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return (DWORD) 0x05650004;
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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, GetVersionExA )
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APIHOOK_ENTRY(KERNEL32.DLL, GetVersionExW )
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APIHOOK_ENTRY(KERNEL32.DLL, GetVersion )
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HOOK_END
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IMPLEMENT_SHIM_END
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