Source code of Windows XP (NT5)
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/*++
Copyright (c) 2000 Microsoft Corporation
Module Name:
ChangeAuthenticationLevel.cpp
Abstract:
Sets the dwAuthnLevel for CoInitializeSecurity() to RPC_C_AUTHN_LEVEL_CONNECT.
This fixes problems associated with a change with Windows 2000 and above where
RPC_C_AUTHN_LEVEL_NONE is nolonger promoted for local calls to PRIVACY.
Notes:
Only needed where app sets level to RPC_C_AUTHN_LEVEL_NONE.
History:
07/19/2000 jpipkins Created
--*/
#include "precomp.h"
IMPLEMENT_SHIM_BEGIN(ChangeAuthenticationLevel)
#include "ShimHookMacro.h"
APIHOOK_ENUM_BEGIN
APIHOOK_ENUM_ENTRY(CoInitializeSecurity)
APIHOOK_ENUM_END
/*++
Adjust security level.
--*/
HRESULT
APIHOOK(CoInitializeSecurity)(
PSECURITY_DESCRIPTOR pVoid,
LONG cAuthSvc,
SOLE_AUTHENTICATION_SERVICE *asAuthSvc,
void *pReserved1,
DWORD dwAuthnLevel,
DWORD dwImpLevel,
SOLE_AUTHENTICATION_LIST *pAuthList,
DWORD dwCapabilities,
void *pReserved3
)
{
HRESULT hResult;
DPFN( eDbgLevelInfo, "CoInitializeSecurity called");
if (RPC_C_AUTHN_LEVEL_NONE == dwAuthnLevel)
{
LOGN( eDbgLevelWarning, "[APIHook_CoInitializeSecurity] Increasing authentication level");
dwAuthnLevel = RPC_C_AUTHN_LEVEL_CONNECT;
}
hResult = ORIGINAL_API(CoInitializeSecurity)(
pVoid,
cAuthSvc,
asAuthSvc,
pReserved1,
dwAuthnLevel,
dwImpLevel,
pAuthList,
dwCapabilities,
pReserved3);
return hResult;
}
/*++
Register hooked functions
--*/
HOOK_BEGIN
APIHOOK_ENTRY(OLE32.DLL, CoInitializeSecurity)
HOOK_END
IMPLEMENT_SHIM_END