Main/src-server/HostDnsService.h

	HostDnsService.h revision 510b14148124a664875cdb3a996433bd92c9324e
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync/* $Id$ */
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync/** @file
01bceecc7f7484a8820c77b884bb91cdefc97390vboxsync * Host DNS listener.
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync */
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync/*
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync * Copyright (C) 2005-2012 Oracle Corporation
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync *
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync * available from http://www.virtualbox.org. This file is free software;
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync * you can redistribute it and/or modify it under the terms of the GNU
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync * General Public License (GPL) as published by the Free Software
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync */
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync#ifndef ___H_DNSHOSTSERVICE
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync#define ___H_DNSHOSTSERVICE
5218e94d899f948d3def7109e05a93fc6d590037vboxsync#include "VirtualBoxBase.h"
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync#include <iprt/cdefs.h>
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync#include <iprt/critsect.h>
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync#include <iprt/types.h>
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync#include <list>
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync#include <vector>
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsynctypedef std::list<com::Utf8Str> Utf8StrList;
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsynctypedef Utf8StrList::iterator Utf8StrListIterator;
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsyncclass HostDnsMonitorProxy;
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsynctypedef const HostDnsMonitorProxy *PCHostDnsMonitorProxy;
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsyncclass Lockee
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync{
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  public:
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync    Lockee();
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync    virtual ~Lockee();
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync    const RTCRITSECT* lock() const;
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  private:
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync    RTCRITSECT mLock;
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync};
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsyncclass ALock
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync{
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  public:
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    explicit ALock(const Lockee *l);
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync    ~ALock();
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  private:
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync    const Lockee *lockee;
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync};
607b3e94ac964648f49fc97505782d4b71b8c18fvboxsync
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsyncclass HostDnsInformation
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync{
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  public:
510b14148124a664875cdb3a996433bd92c9324evboxsync    std::vector<std::string> servers;
510b14148124a664875cdb3a996433bd92c9324evboxsync    std::string domain;
510b14148124a664875cdb3a996433bd92c9324evboxsync    std::vector<std::string> searchList;
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync};
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync/**
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync * This class supposed to be a real DNS monitor object it should be singleton,
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync * it lifecycle starts and ends together with VBoxSVC.
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync */
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsyncclass HostDnsMonitor : public Lockee
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync{
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  public:
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync    static const HostDnsMonitor *getHostDnsMonitor();
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    static void shutdown();
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync    void addMonitorProxy(PCHostDnsMonitorProxy) const;
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync    void releaseMonitorProxy(PCHostDnsMonitorProxy) const;
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync    const HostDnsInformation &getInfo() const;
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    /* @note: method will wait till client call
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync       HostDnsService::monitorThreadInitializationDone() */
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    virtual HRESULT init();
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  protected:
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    explicit HostDnsMonitor(bool fThreaded = false);
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    virtual ~HostDnsMonitor();
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    void notifyAll() const;
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync    void setInfo(const HostDnsInformation &);
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    /* this function used only if HostDnsMonitor::HostDnsMonitor(true) */
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    void monitorThreadInitializationDone();
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    virtual void monitorThreadShutdown() = 0;
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    virtual int monitorWorker() = 0;
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  private:
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync    HostDnsMonitor(const HostDnsMonitor &);
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync    HostDnsMonitor& operator= (const HostDnsMonitor &);
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    static int threadMonitoringRoutine(RTTHREAD, void *);
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  public:
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    struct Data;
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    Data *m;
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync};
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync/**
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync * This class supposed to be a proxy for events on changing Host Name Resolving configurations.
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync */
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsyncclass HostDnsMonitorProxy : public Lockee
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync{
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    public:
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    HostDnsMonitorProxy();
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    ~HostDnsMonitorProxy();
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync    void init(const HostDnsMonitor *aMonitor, const VirtualBox *aParent);
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    void notify() const;
233a114a6b1855d0525e4c4724683ac0f0d6956cvboxsync
70c5cdbebee624ca386867b552ec032374bfaaf8vboxsync    HRESULT GetNameServers(std::vector<com::Utf8Str> &aNameServers);
70c5cdbebee624ca386867b552ec032374bfaaf8vboxsync    HRESULT GetDomainName(com::Utf8Str *pDomainName);
70c5cdbebee624ca386867b552ec032374bfaaf8vboxsync    HRESULT GetSearchStrings(std::vector<com::Utf8Str> &aSearchStrings);
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync    bool operator==(PCHostDnsMonitorProxy&);
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    private:
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    void updateInfo();
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    private:
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    struct Data;
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    Data *m;
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync};
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync# ifdef RT_OS_DARWIN
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsyncclass HostDnsServiceDarwin : public HostDnsMonitor
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync{
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  public:
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync    HostDnsServiceDarwin();
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    ~HostDnsServiceDarwin();
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    HRESULT init();
233a114a6b1855d0525e4c4724683ac0f0d6956cvboxsync
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    protected:
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    virtual void monitorThreadShutdown();
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    virtual int monitorWorker();
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    private:
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    HRESULT updateInfo();
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync    static void hostDnsServiceStoreCallback(void *store, void *arrayRef, void *info);
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    struct Data;
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    Data *m;
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync};
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync# endif
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync# ifdef RT_OS_WINDOWS
510b14148124a664875cdb3a996433bd92c9324evboxsyncclass HostDnsServiceWin : public HostDnsMonitor
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync{
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    public:
510b14148124a664875cdb3a996433bd92c9324evboxsync    HostDnsServiceWin();
510b14148124a664875cdb3a996433bd92c9324evboxsync    ~HostDnsServiceWin();
510b14148124a664875cdb3a996433bd92c9324evboxsync    HRESULT init();
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    protected:
510b14148124a664875cdb3a996433bd92c9324evboxsync    virtual void monitorThreadShutdown();
510b14148124a664875cdb3a996433bd92c9324evboxsync    virtual int monitorWorker();
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    private:
510b14148124a664875cdb3a996433bd92c9324evboxsync    void strList2List(std::vector<std::string>& lst, char *strLst);
510b14148124a664875cdb3a996433bd92c9324evboxsync    HRESULT updateInfo();
63fdb92b88f31446f6ea53241c0d127677c71c7evboxsync
510b14148124a664875cdb3a996433bd92c9324evboxsync    private:
510b14148124a664875cdb3a996433bd92c9324evboxsync    struct Data;
510b14148124a664875cdb3a996433bd92c9324evboxsync    Data *m;
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync};
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync# endif
d27bf03c13c7a5707386600ef9b0bbb82fb3420dvboxsync# if defined(RT_OS_SOLARIS) || defined(RT_OS_LINUX) || defined(RT_OS_OS2) || defined(RT_OS_FREEBSD)
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsyncclass HostDnsServiceResolvConf: public HostDnsMonitor
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync{
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  public:
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    explicit HostDnsServiceResolvConf(bool fThreaded = false) : HostDnsMonitor(fThreaded), m(NULL) {}
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    virtual ~HostDnsServiceResolvConf();
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    virtual HRESULT init(const char *aResolvConfFileName);
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    const std::string& resolvConf() const;
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  protected:
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    HRESULT readResolvConf();
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    /* While not all hosts supports Hosts DNS change notifiaction
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync     * default implementation offers return VERR_IGNORE.
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync     */
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    virtual void monitorThreadShutdown() {}
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    virtual int monitorWorker() {return VERR_IGNORED;}
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  protected:
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    struct Data;
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    Data *m;
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync};
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync#  if defined(RT_OS_SOLARIS)
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync/**
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync * XXX: https://blogs.oracle.com/praks/entry/file_events_notification
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync */
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsyncclass HostDnsServiceSolaris : public HostDnsServiceResolvConf
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync{
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  public:
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync    HostDnsServiceSolaris(){}
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    ~HostDnsServiceSolaris(){}
6c2ae4881e4220cc4bba0738d2b0d158d571ec9bvboxsync    HRESULT init(){ return HostDnsServiceResolvConf::init("/etc/resolv.conf");}
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync};
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync#  elif defined(RT_OS_LINUX)
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsyncclass HostDnsServiceLinux : public HostDnsServiceResolvConf
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync{
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  public:
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    HostDnsServiceLinux():HostDnsServiceResolvConf(true){}
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    virtual ~HostDnsServiceLinux();
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    virtual HRESULT init(){ return HostDnsServiceResolvConf::init("/etc/resolv.conf");}
4a5eed4c1192804dd98b2d803ef27f610a0a5a90vboxsync
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync  protected:
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    virtual void monitorThreadShutdown();
dbbd0cae65188dffbd927bdde2d88cbeec2e26davboxsync    virtual int monitorWorker();
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync};
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
d27bf03c13c7a5707386600ef9b0bbb82fb3420dvboxsync#  elif defined(RT_OS_FREEBSD)
d27bf03c13c7a5707386600ef9b0bbb82fb3420dvboxsyncclass HostDnsServiceFreebsd: public HostDnsServiceResolvConf
d27bf03c13c7a5707386600ef9b0bbb82fb3420dvboxsync{
d27bf03c13c7a5707386600ef9b0bbb82fb3420dvboxsync    public:
d27bf03c13c7a5707386600ef9b0bbb82fb3420dvboxsync    HostDnsServiceFreebsd(){}
d27bf03c13c7a5707386600ef9b0bbb82fb3420dvboxsync    ~HostDnsServiceFreebsd(){}
d27bf03c13c7a5707386600ef9b0bbb82fb3420dvboxsync    HRESULT init(){ return HostDnsServiceResolvConf::init("/etc/resolv.conf");}
d27bf03c13c7a5707386600ef9b0bbb82fb3420dvboxsync};
d27bf03c13c7a5707386600ef9b0bbb82fb3420dvboxsync
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync#  elif defined(RT_OS_OS2)
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsyncclass HostDnsServiceOs2 : public HostDnsServiceResolvConf
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync{
c0b3f8f271f3bc2358c46ed5a99af29a28bd1b66vboxsync  public:
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    HostDnsServiceOs2(){}
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    ~HostDnsServiceOs2(){}
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    /* XXX: \\MPTN\\ETC should be taken from environment variable ETC  */
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync    HRESULT init(){ return init("\\MPTN\\ETC\\RESOLV2");}
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync};
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync#  endif
3f2299591cfeb8a37a3578bef9c44c1790860948vboxsync# endif
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync
18b1f1bb3429f8bfc1a52cfaeb2445e9fb1f55cdvboxsync#endif /* !___H_DNSHOSTSERVICE */