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/* $Id$ */
/** @file
*
* VirtualBox API client session token abstraction
*/
/*
* Copyright (C) 2013-2022 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
#ifndef MAIN_INCLUDED_ClientToken_h
#define MAIN_INCLUDED_ClientToken_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <VBox/com/ptr.h>
#include <VBox/com/AutoLock.h>
#include "MachineImpl.h"
#ifdef VBOX_WITH_GENERIC_SESSION_WATCHER
# include "TokenImpl.h"
#endif /* VBOX_WITH_GENERIC_SESSION_WATCHER */
#if defined(RT_OS_WINDOWS)
# define CTTOKENARG NULL
# define CTTOKENTYPE HANDLE
#elif defined(RT_OS_OS2)
# define CTTOKENARG NULLHANDLE
# define CTTOKENTYPE HMTX
#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
# define CTTOKENARG -1
# define CTTOKENTYPE int
#elif defined(VBOX_WITH_GENERIC_SESSION_WATCHER)
# define CTTOKENARG NULL
# define CTTOKENTYPE MachineToken *
#else
# error "Port me!"
#endif
/**
* Class which represents a token which can be used to check for client
* crashes and similar purposes.
*/
class Machine::ClientToken
{
public:
/**
* Constructor which creates a usable instance
*
* @param pMachine Reference to Machine object
* @param pSessionMachine Reference to corresponding SessionMachine object
*/
ClientToken(const ComObjPtr<Machine> &pMachine, SessionMachine *pSessionMachine);
/**
* Default destructor. Cleans everything up.
*/
~ClientToken();
/**
* Check if object contains a usable token.
*/
bool isReady();
/**
* Query token ID, which is a unique string value for this token. Do not
* assume any specific content/format, it is opaque information.
*/
void getId(Utf8Str &strId);
/**
* Query token, which is platform dependent.
*/
CTTOKENTYPE getToken();
#ifndef VBOX_WITH_GENERIC_SESSION_WATCHER
/**
* Release token now. Returns information if the client has terminated.
*/
bool release();
#endif /* !VBOX_WITH_GENERIC_SESSION_WATCHER */
private:
/**
* Default constructor. Don't use, will not create a sensible instance.
*/
ClientToken();
Machine *mMachine;
CTTOKENTYPE mClientToken;
Utf8Str mClientTokenId;
#ifdef VBOX_WITH_GENERIC_SESSION_WATCHER
bool mClientTokenPassed;
#endif
};
#endif /* !MAIN_INCLUDED_ClientToken_h */
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