Source code of Windows XP (NT5)
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// --------------------------------------------------------------------------
// Module Name: Impersonation.h
//
// Copyright (c) 1999-2000, Microsoft Corporation
//
// Classes that handle state preservation, changing and restoration.
//
// History: 1999-08-18 vtan created
// 1999-11-16 vtan separate file
// 2000-02-01 vtan moved from Neptune to Whistler
// --------------------------------------------------------------------------
#ifndef _Impersonation_
#define _Impersonation_
#include "KernelResources.h"
// --------------------------------------------------------------------------
// CImpersonation
//
// Purpose: This class allows a thread to impersonate a user and revert to
// self when the object goes out of scope.
//
// History: 1999-08-18 vtan created
// 1999-10-13 vtan added reference counting
// 2000-02-01 vtan moved from Neptune to Whistler
// --------------------------------------------------------------------------
class CImpersonation
{
private:
CImpersonation (void);
public:
CImpersonation (HANDLE hToken);
~CImpersonation (void);
bool IsImpersonating (void) const;
static NTSTATUS ImpersonateUser (HANDLE hThread, HANDLE hToken);
static NTSTATUS StaticInitialize (void);
static NTSTATUS StaticTerminate (void);
private:
static CMutex* s_pMutex;
static int s_iReferenceCount;
NTSTATUS _status;
bool _fAlreadyImpersonating;
};
#endif /* _Impersonation_ */