/* $Id: NATNetworkImpl.h 50174 2014-01-23 09:22:22Z vboxsync $ */
/** @file
 * INATNetwork implementation header, lives in VBoxSVC.
 */

/*
 * Copyright (C) 2006-2013 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 ____H_H_NATNETWORKIMPL
#define ____H_H_NATNETWORKIMPL
#include "VBoxEvents.h"
#include "NATNetworkWrap.h"

#ifdef VBOX_WITH_HOSTNETIF_API
struct NETIFINFO;
#endif

namespace settings
{
    struct NATNetwork;
    struct NATRule;
}

#ifdef RT_OS_WINDOWS
# define NATSR_EXECUTABLE_NAME "VBoxNetNAT.exe"
#else
# define NATSR_EXECUTABLE_NAME "VBoxNetNAT"
#endif

enum ADDRESSLOOKUPTYPE
{
    ADDR_GATEWAY,
    ADDR_DHCP,
    ADDR_DHCPLOWERIP,
    ADDR_ANY
};

class NATNetworkServiceRunner: public NetworkServiceRunner
{
public:
    NATNetworkServiceRunner(): NetworkServiceRunner(NATSR_EXECUTABLE_NAME){}
    ~NATNetworkServiceRunner(){}
};

class ATL_NO_VTABLE NATNetwork :
    public NATNetworkWrap
{
public:

    DECLARE_EMPTY_CTOR_DTOR(NATNetwork)

    HRESULT FinalConstruct();
    void FinalRelease();

    HRESULT init(VirtualBox *aVirtualBox,
                 com::Utf8Str aName);


    HRESULT init(VirtualBox *aVirtualBox,
                 const settings::NATNetwork &data);
    void uninit();
    HRESULT i_saveSettings(settings::NATNetwork &data);

private:

    // Wrapped INATNetwork properties
    HRESULT getNetworkName(com::Utf8Str &aNetworkName);
    HRESULT setNetworkName(const com::Utf8Str &aNetworkName);
    HRESULT getEnabled(BOOL *aEnabled);
    HRESULT setEnabled(BOOL aEnabled);
    HRESULT getNetwork(com::Utf8Str &aNetwork);
    HRESULT setNetwork(const com::Utf8Str &aNetwork);
    HRESULT getGateway(com::Utf8Str &aGateway);
    HRESULT getIPv6Enabled(BOOL *aIPv6Enabled);
    HRESULT setIPv6Enabled(BOOL aIPv6Enabled);
    HRESULT getIPv6Prefix(com::Utf8Str &aIPv6Prefix);
    HRESULT setIPv6Prefix(const com::Utf8Str &aIPv6Prefix);
    HRESULT getAdvertiseDefaultIPv6RouteEnabled(BOOL *aAdvertiseDefaultIPv6RouteEnabled);
    HRESULT setAdvertiseDefaultIPv6RouteEnabled(BOOL aAdvertiseDefaultIPv6RouteEnabled);
    HRESULT getNeedDhcpServer(BOOL *aNeedDhcpServer);
    HRESULT setNeedDhcpServer(BOOL aNeedDhcpServer);
    HRESULT getEventSource(ComPtr<IEventSource> &aEventSource);
    HRESULT getPortForwardRules4(std::vector<com::Utf8Str> &aPortForwardRules4);
    HRESULT getLocalMappings(std::vector<com::Utf8Str> &aLocalMappings);
    HRESULT getLoopbackIp6(LONG *aLoopbackIp6);
    HRESULT setLoopbackIp6(LONG aLoopbackIp6);
    HRESULT getPortForwardRules6(std::vector<com::Utf8Str> &aPortForwardRules6);

    // wrapped INATNetwork methods
    HRESULT addLocalMapping(const com::Utf8Str &aHostid,
                                  LONG aOffset);
    HRESULT addPortForwardRule(BOOL aIsIpv6,
                               const com::Utf8Str &aRuleName,
                               NATProtocol_T aProto,
                               const com::Utf8Str &aHostIP,
                               USHORT aHostPort,
                               const com::Utf8Str &aGuestIP,
                               USHORT aGuestPort);
    HRESULT removePortForwardRule(BOOL aISipv6,
                                  const com::Utf8Str &aRuleName);
    HRESULT start(const com::Utf8Str &aTrunkType);
    HRESULT stop();

    // Internal methods
    int i_recalculateIpv4AddressAssignments();
    int i_findFirstAvailableOffset(ADDRESSLOOKUPTYPE, uint32_t *);

    typedef std::map<Utf8Str, settings::NATRule> NATRuleMap;
    typedef NATRuleMap::const_iterator constNATRuleMapIterator;

    void i_getPortForwardRulesFromMap(std::vector<Utf8Str> &aPortForwardRules, NATRuleMap& aRules);

    /** weak VirtualBox parent */
    VirtualBox * const mVirtualBox;

    const  com::Utf8Str mName;

    struct Data;
    struct Data *m;

};

#endif // !____H_H_NATNETWORKIMPL