/* $Id: HostImpl.cpp 16560 2009-02-06 18:06:04Z vboxsync $ */
/** @file
 * VirtualBox COM class implementation: Host
 */

/*
 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
 *
 * 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.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 USA or visit http://www.sun.com if you need
 * additional information or have any questions.
 */

#define __STDC_LIMIT_MACROS
#define __STDC_CONSTANT_MACROS

#ifdef RT_OS_LINUX
// # include <sys/types.h>
// # include <sys/stat.h>
// # include <unistd.h>
# include <sys/ioctl.h>
// # include <fcntl.h>
// # include <mntent.h>
/* bird: This is a hack to work around conflicts between these linux kernel headers
 *       and the GLIBC tcpip headers. They have different declarations of the 4
 *       standard byte order functions. */
// # define _LINUX_BYTEORDER_GENERIC_H
// # include <linux/cdrom.h>
# include <errno.h>
# include <net/if.h>
# include <net/if_arp.h>
#endif /* RT_OS_LINUX */

#ifdef RT_OS_SOLARIS
# include <fcntl.h>
# include <unistd.h>
# include <stropts.h>
# include <errno.h>
# include <limits.h>
# include <stdio.h>
# ifdef VBOX_SOLARIS_NSL_RESOLVED
#  include <libdevinfo.h>
# endif
# include <net/if.h>
# include <sys/socket.h>
# include <sys/sockio.h>
# include <net/if_arp.h>
# include <net/if.h>
# include <sys/types.h>
# include <sys/stat.h>
# include <sys/cdio.h>
# include <sys/dkio.h>
# include <sys/mnttab.h>
# include <sys/mntent.h>
/* Dynamic loading of libhal on Solaris hosts */
# ifdef VBOX_USE_LIBHAL
#  include "vbox-libhal.h"
extern "C" char *getfullrawname(char *);
# endif
# include "solaris/DynLoadLibSolaris.h"
#endif /* RT_OS_SOLARIS */

#ifdef RT_OS_WINDOWS
# define _WIN32_DCOM
# include <windows.h>
# include <shellapi.h>
# define INITGUID
# include <guiddef.h>
# include <devguid.h>
# include <objbase.h>
# include <setupapi.h>
# include <shlobj.h>
# include <cfgmgr32.h>

#endif /* RT_OS_WINDOWS */


#include "HostImpl.h"
#include "HostDVDDriveImpl.h"
#include "HostFloppyDriveImpl.h"
#include "HostNetworkInterfaceImpl.h"
#ifdef VBOX_WITH_USB
# include "HostUSBDeviceImpl.h"
# include "USBDeviceFilterImpl.h"
# include "USBProxyService.h"
#endif
#include "VirtualBoxImpl.h"
#include "MachineImpl.h"
#include "Logging.h"

#ifdef RT_OS_DARWIN
# include "darwin/iokit.h"
#endif


#include <iprt/asm.h>
#include <iprt/string.h>
#include <iprt/mp.h>
#include <iprt/time.h>
#include <iprt/param.h>
#include <iprt/env.h>
#include <iprt/mem.h>
#ifdef RT_OS_SOLARIS
# include <iprt/path.h>
# include <iprt/ctype.h>
#endif
#ifdef VBOX_WITH_HOSTNETIF_API
#include "netif.h"
#endif

#include <VBox/usb.h>
#include <VBox/x86.h>
#include <VBox/err.h>
#include <VBox/settings.h>

#if defined(RT_OS_WINDOWS) && defined(VBOX_WITH_NETFLT)
# include <VBox/WinNetConfig.h>
#endif /* #if defined(RT_OS_WINDOWS) && defined(VBOX_WITH_NETFLT) */

#include <stdio.h>

#include <algorithm>



// constructor / destructor
/////////////////////////////////////////////////////////////////////////////

HRESULT Host::FinalConstruct()
{
    return S_OK;
}

void Host::FinalRelease()
{
    if (isReady())
        uninit();
}

// public initializer/uninitializer for internal purposes only
/////////////////////////////////////////////////////////////////////////////

/**
 * Initializes the host object.
 *
 * @param aParent   VirtualBox parent object.
 */
HRESULT Host::init (VirtualBox *aParent)
{
    LogFlowThisFunc (("isReady=%d\n", isReady()));

    ComAssertRet (aParent, E_INVALIDARG);

    AutoWriteLock alock (this);
    ComAssertRet (!isReady(), E_FAIL);

    mParent = aParent;

#ifdef VBOX_WITH_USB
    /*
     * Create and initialize the USB Proxy Service.
     */
# if defined (RT_OS_DARWIN)
    mUSBProxyService = new USBProxyServiceDarwin (this);
# elif defined (RT_OS_LINUX)
    mUSBProxyService = new USBProxyServiceLinux (this);
# elif defined (RT_OS_OS2)
    mUSBProxyService = new USBProxyServiceOs2 (this);
# elif defined (RT_OS_SOLARIS)
    mUSBProxyService = new USBProxyServiceSolaris (this);
# elif defined (RT_OS_WINDOWS)
    mUSBProxyService = new USBProxyServiceWindows (this);
# else
    mUSBProxyService = new USBProxyService (this);
# endif
    HRESULT hrc = mUSBProxyService->init();
    AssertComRCReturn(hrc, hrc);
#endif /* VBOX_WITH_USB */

#ifdef VBOX_WITH_RESOURCE_USAGE_API
    registerMetrics (aParent->performanceCollector());
#endif /* VBOX_WITH_RESOURCE_USAGE_API */

#if defined (RT_OS_WINDOWS)
    mHostPowerService = new HostPowerServiceWin (mParent);
#elif defined (RT_OS_DARWIN)
    mHostPowerService = new HostPowerServiceDarwin (mParent);
#else
    mHostPowerService = new HostPowerService (mParent);
#endif

    /* Cache the features reported by GetProcessorFeature. */
    fVTxAMDVSupported = false;
    fLongModeSupported = false;
    fPAESupported = false;

    if (ASMHasCpuId())
    {
        uint32_t u32FeaturesECX;
        uint32_t u32Dummy;
        uint32_t u32FeaturesEDX;
        uint32_t u32VendorEBX, u32VendorECX, u32VendorEDX, u32AMDFeatureEDX, u32AMDFeatureECX;

        ASMCpuId (0, &u32Dummy, &u32VendorEBX, &u32VendorECX, &u32VendorEDX);
        ASMCpuId (1, &u32Dummy, &u32Dummy, &u32FeaturesECX, &u32FeaturesEDX);
        /* Query AMD features. */
        ASMCpuId (0x80000001, &u32Dummy, &u32Dummy, &u32AMDFeatureECX, &u32AMDFeatureEDX);

        fLongModeSupported = !!(u32AMDFeatureEDX & X86_CPUID_AMD_FEATURE_EDX_LONG_MODE);
        fPAESupported      = !!(u32FeaturesEDX & X86_CPUID_FEATURE_EDX_PAE);

        if (    u32VendorEBX == X86_CPUID_VENDOR_INTEL_EBX
            &&  u32VendorECX == X86_CPUID_VENDOR_INTEL_ECX
            &&  u32VendorEDX == X86_CPUID_VENDOR_INTEL_EDX
           )
        {
            if (    (u32FeaturesECX & X86_CPUID_FEATURE_ECX_VMX)
                 && (u32FeaturesEDX & X86_CPUID_FEATURE_EDX_MSR)
                 && (u32FeaturesEDX & X86_CPUID_FEATURE_EDX_FXSR)
               )
                fVTxAMDVSupported = true;
        }
        else
        if (    u32VendorEBX == X86_CPUID_VENDOR_AMD_EBX
            &&  u32VendorECX == X86_CPUID_VENDOR_AMD_ECX
            &&  u32VendorEDX == X86_CPUID_VENDOR_AMD_EDX
           )
        {
            if (   (u32AMDFeatureECX & X86_CPUID_AMD_FEATURE_ECX_SVM)
                && (u32FeaturesEDX & X86_CPUID_FEATURE_EDX_MSR)
                && (u32FeaturesEDX & X86_CPUID_FEATURE_EDX_FXSR)
               )
                fVTxAMDVSupported = true;
        }
    }

    setReady(true);
    return S_OK;
}

/**
 *  Uninitializes the host object and sets the ready flag to FALSE.
 *  Called either from FinalRelease() or by the parent when it gets destroyed.
 */
void Host::uninit()
{
    LogFlowThisFunc (("isReady=%d\n", isReady()));

    AssertReturn (isReady(), (void) 0);

#ifdef VBOX_WITH_RESOURCE_USAGE_API
    unregisterMetrics (mParent->performanceCollector());
#endif /* VBOX_WITH_RESOURCE_USAGE_API */

#ifdef VBOX_WITH_USB
    /* wait for USB proxy service to terminate before we uninit all USB
     * devices */
    LogFlowThisFunc (("Stopping USB proxy service...\n"));
    delete mUSBProxyService;
    mUSBProxyService = NULL;
    LogFlowThisFunc (("Done stopping USB proxy service.\n"));
#endif

    delete mHostPowerService;

    /* uninit all USB device filters still referenced by clients */
    uninitDependentChildren();

#ifdef VBOX_WITH_USB
    mUSBDeviceFilters.clear();
#endif

    setReady (FALSE);
}

// IHost properties
/////////////////////////////////////////////////////////////////////////////

/**
 * Returns a list of host DVD drives.
 *
 * @returns COM status code
 * @param drives address of result pointer
 */
STDMETHODIMP Host::COMGETTER(DVDDrives) (IHostDVDDriveCollection **aDrives)
{
    CheckComArgOutPointerValid(aDrives);
    AutoWriteLock alock (this);
    CHECK_READY();
    std::list <ComObjPtr <HostDVDDrive> > list;
    HRESULT rc = S_OK;

#if defined(RT_OS_WINDOWS)
    int sz = GetLogicalDriveStrings(0, NULL);
    TCHAR *hostDrives = new TCHAR[sz+1];
    GetLogicalDriveStrings(sz, hostDrives);
    wchar_t driveName[3] = { '?', ':', '\0' };
    TCHAR *p = hostDrives;
    do
    {
        if (GetDriveType(p) == DRIVE_CDROM)
        {
            driveName[0] = *p;
            ComObjPtr <HostDVDDrive> hostDVDDriveObj;
            hostDVDDriveObj.createObject();
            hostDVDDriveObj->init (Bstr (driveName));
            list.push_back (hostDVDDriveObj);
        }
        p += _tcslen(p) + 1;
    }
    while (*p);
    delete[] hostDrives;

#elif defined(RT_OS_SOLARIS)
# ifdef VBOX_USE_LIBHAL
    if (!getDVDInfoFromHal(list))
# endif
    // Not all Solaris versions ship with libhal.
    // So use a fallback approach similar to Linux.
    {
        if (RTEnvGet("VBOX_CDROM"))
        {
            char *cdromEnv = strdup(RTEnvGet("VBOX_CDROM"));
            char *cdromDrive;
            cdromDrive = strtok(cdromEnv, ":"); /** @todo use strtok_r. */
            while (cdromDrive)
            {
                if (validateDevice(cdromDrive, true))
                {
                    ComObjPtr <HostDVDDrive> hostDVDDriveObj;
                    hostDVDDriveObj.createObject();
                    hostDVDDriveObj->init (Bstr (cdromDrive));
                    list.push_back (hostDVDDriveObj);
                }
                cdromDrive = strtok(NULL, ":");
            }
            free(cdromEnv);
        }
        else
        {
            // this might work on Solaris version older than Nevada.
            if (validateDevice("/cdrom/cdrom0", true))
            {
                ComObjPtr <HostDVDDrive> hostDVDDriveObj;
                hostDVDDriveObj.createObject();
                hostDVDDriveObj->init (Bstr ("cdrom/cdrom0"));
                list.push_back (hostDVDDriveObj);
            }

            // check the mounted drives
            parseMountTable(MNTTAB, list);
        }
    }

#elif defined(RT_OS_LINUX)
    if (RT_SUCCESS (mHostDrives.updateDVDs()))
        for (DriveInfoList::const_iterator it = mHostDrives.DVDBegin();
             SUCCEEDED (rc) && it != mHostDrives.DVDEnd(); ++it)
        {
            ComObjPtr<HostDVDDrive> hostDVDDriveObj;
            Bstr device (it->mDevice.c_str());
            Bstr udi (it->mUdi.empty() ? NULL : it->mUdi.c_str());
            Bstr description (it->mDescription.empty() ? NULL : it->mDescription.c_str());
            if (device.isNull() || (!it->mUdi.empty() && udi.isNull()) ||
                (!it->mDescription.empty() && description.isNull()))
                rc = E_OUTOFMEMORY;
            if (SUCCEEDED (rc))
                rc = hostDVDDriveObj.createObject();
            if (SUCCEEDED (rc))
                rc = hostDVDDriveObj->init (device, udi, description);
            if (SUCCEEDED (rc))
                list.push_back(hostDVDDriveObj);
        }
#elif defined(RT_OS_DARWIN)
    PDARWINDVD cur = DarwinGetDVDDrives();
    while (cur)
    {
        ComObjPtr<HostDVDDrive> hostDVDDriveObj;
        hostDVDDriveObj.createObject();
        hostDVDDriveObj->init(Bstr(cur->szName));
        list.push_back(hostDVDDriveObj);

        /* next */
        void *freeMe = cur;
        cur = cur->pNext;
        RTMemFree(freeMe);
    }

#else
    /* PORTME */
#endif

    ComObjPtr<HostDVDDriveCollection> collection;
    collection.createObject();
    collection->init (list);
    collection.queryInterfaceTo(aDrives);
    return rc;
}

/**
 * Returns a list of host floppy drives.
 *
 * @returns COM status code
 * @param drives address of result pointer
 */
STDMETHODIMP Host::COMGETTER(FloppyDrives) (IHostFloppyDriveCollection **aDrives)
{
    CheckComArgOutPointerValid(aDrives);
    AutoWriteLock alock (this);
    CHECK_READY();

    std::list <ComObjPtr <HostFloppyDrive> > list;
    HRESULT rc = S_OK;

#ifdef RT_OS_WINDOWS
    int sz = GetLogicalDriveStrings(0, NULL);
    TCHAR *hostDrives = new TCHAR[sz+1];
    GetLogicalDriveStrings(sz, hostDrives);
    wchar_t driveName[3] = { '?', ':', '\0' };
    TCHAR *p = hostDrives;
    do
    {
        if (GetDriveType(p) == DRIVE_REMOVABLE)
        {
            driveName[0] = *p;
            ComObjPtr <HostFloppyDrive> hostFloppyDriveObj;
            hostFloppyDriveObj.createObject();
            hostFloppyDriveObj->init (Bstr (driveName));
            list.push_back (hostFloppyDriveObj);
        }
        p += _tcslen(p) + 1;
    }
    while (*p);
    delete[] hostDrives;
#elif defined(RT_OS_LINUX)
    if (RT_SUCCESS (mHostDrives.updateFloppies()))
        for (DriveInfoList::const_iterator it = mHostDrives.FloppyBegin();
             SUCCEEDED (rc) && it != mHostDrives.FloppyEnd(); ++it)
        {
            ComObjPtr<HostFloppyDrive> hostFloppyDriveObj;
            Bstr device (it->mDevice.c_str());
            Bstr udi (it->mUdi.empty() ? NULL : it->mUdi.c_str());
            Bstr description (it->mDescription.empty() ? NULL : it->mDescription.c_str());
            if (device.isNull() || (!it->mUdi.empty() && udi.isNull()) ||
                (!it->mDescription.empty() && description.isNull()))
                rc = E_OUTOFMEMORY;
            if (SUCCEEDED (rc))
                rc = hostFloppyDriveObj.createObject();
            if (SUCCEEDED (rc))
                rc = hostFloppyDriveObj->init (device, udi, description);
            if (SUCCEEDED (rc))
                list.push_back(hostFloppyDriveObj);
        }
#else
    /* PORTME */
#endif

    ComObjPtr<HostFloppyDriveCollection> collection;
    collection.createObject();
    collection->init (list);
    collection.queryInterfaceTo(aDrives);
    return rc;
}

#ifdef RT_OS_WINDOWS
/**
 * Windows helper function for Host::COMGETTER(NetworkInterfaces).
 *
 * @returns true / false.
 *
 * @param   guid        The GUID.
 */
static bool IsTAPDevice(const char *guid)
{
    HKEY hNetcard;
    LONG status;
    DWORD len;
    int i = 0;
    bool ret = false;

    status = RegOpenKeyExA(HKEY_LOCAL_MACHINE, "SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E972-E325-11CE-BFC1-08002BE10318}", 0, KEY_READ, &hNetcard);
    if (status != ERROR_SUCCESS)
        return false;

    for (;;)
    {
        char szEnumName[256];
        char szNetCfgInstanceId[256];
        DWORD dwKeyType;
        HKEY  hNetCardGUID;

        len = sizeof(szEnumName);
        status = RegEnumKeyExA(hNetcard, i, szEnumName, &len, NULL, NULL, NULL, NULL);
        if (status != ERROR_SUCCESS)
            break;

        status = RegOpenKeyExA(hNetcard, szEnumName, 0, KEY_READ, &hNetCardGUID);
        if (status == ERROR_SUCCESS)
        {
            len = sizeof(szNetCfgInstanceId);
            status = RegQueryValueExA(hNetCardGUID, "NetCfgInstanceId", NULL, &dwKeyType, (LPBYTE)szNetCfgInstanceId, &len);
            if (status == ERROR_SUCCESS && dwKeyType == REG_SZ)
            {
                char szNetProductName[256];
                char szNetProviderName[256];

                szNetProductName[0] = 0;
                len = sizeof(szNetProductName);
                status = RegQueryValueExA(hNetCardGUID, "ProductName", NULL, &dwKeyType, (LPBYTE)szNetProductName, &len);

                szNetProviderName[0] = 0;
                len = sizeof(szNetProviderName);
                status = RegQueryValueExA(hNetCardGUID, "ProviderName", NULL, &dwKeyType, (LPBYTE)szNetProviderName, &len);

                if (   !strcmp(szNetCfgInstanceId, guid)
                    && !strcmp(szNetProductName, "VirtualBox TAP Adapter")
                    && (   (!strcmp(szNetProviderName, "innotek GmbH"))
                        || (!strcmp(szNetProviderName, "Sun Microsystems, Inc."))))
                {
                    ret = true;
                    RegCloseKey(hNetCardGUID);
                    break;
                }
            }
            RegCloseKey(hNetCardGUID);
        }
        ++i;
    }

    RegCloseKey(hNetcard);
    return ret;
}
#endif /* RT_OS_WINDOWS */

#ifdef RT_OS_SOLARIS
static void vboxSolarisAddHostIface(char *pszIface, int Instance, PCRTMAC pMac, void *pvHostNetworkInterfaceList)
{
    std::list<ComObjPtr <HostNetworkInterface> > *pList = (std::list<ComObjPtr <HostNetworkInterface> > *)pvHostNetworkInterfaceList;
    Assert(pList);

    typedef std::map <std::string, std::string> NICMap;
    typedef std::pair <std::string, std::string> NICPair;
    static NICMap SolarisNICMap;
    if (SolarisNICMap.empty())
    {
        SolarisNICMap.insert(NICPair("afe", "ADMtek Centaur/Comet Fast Ethernet"));
        SolarisNICMap.insert(NICPair("aggr", "Link Aggregation Interface"));
        SolarisNICMap.insert(NICPair("bge", "Broadcom BCM57xx Gigabit Ethernet"));
        SolarisNICMap.insert(NICPair("ce", "Cassini Gigabit Ethernet"));
        SolarisNICMap.insert(NICPair("chxge", "Chelsio Ethernet"));
        SolarisNICMap.insert(NICPair("dmfe", "Davicom Fast Ethernet"));
        SolarisNICMap.insert(NICPair("dnet", "DEC 21040/41 21140 Ethernet"));
        SolarisNICMap.insert(NICPair("e1000", "Intel PRO/1000 Gigabit Ethernet"));
        SolarisNICMap.insert(NICPair("e1000g", "Intel PRO/1000 Gigabit Ethernet"));
        SolarisNICMap.insert(NICPair("elx", "3COM EtherLink III Ethernet"));
        SolarisNICMap.insert(NICPair("elxl", "3COM Ethernet"));
        SolarisNICMap.insert(NICPair("eri", "eri Fast Ethernet"));
        SolarisNICMap.insert(NICPair("ge", "GEM Gigabit Ethernet"));
        SolarisNICMap.insert(NICPair("hme", "SUNW,hme Fast-Ethernet"));
        SolarisNICMap.insert(NICPair("ipge", "PCI-E Gigabit Ethernet"));
        SolarisNICMap.insert(NICPair("iprb", "Intel 82557/58/59 Ethernet"));
        SolarisNICMap.insert(NICPair("mxfe", "Macronix 98715 Fast Ethernet"));
        SolarisNICMap.insert(NICPair("nge", "Nvidia Gigabit Ethernet"));
        SolarisNICMap.insert(NICPair("pcelx", "3COM EtherLink III PCMCIA Ethernet"));
        SolarisNICMap.insert(NICPair("pcn", "AMD PCnet Ethernet"));
        SolarisNICMap.insert(NICPair("qfe", "SUNW,qfe Quad Fast-Ethernet"));
        SolarisNICMap.insert(NICPair("rge", "Realtek Gigabit Ethernet"));
        SolarisNICMap.insert(NICPair("rtls", "Realtek 8139 Fast Ethernet"));
        SolarisNICMap.insert(NICPair("skge", "SksKonnect Gigabit Ethernet"));
        SolarisNICMap.insert(NICPair("spwr", "SMC EtherPower II 10/100 (9432) Ethernet"));
        SolarisNICMap.insert(NICPair("vnic", "Virtual Network Interface Ethernet"));
        SolarisNICMap.insert(NICPair("xge", "Neterior Xframe Gigabit Ethernet"));
        SolarisNICMap.insert(NICPair("xge", "Neterior Xframe 10Gigabit Ethernet"));
    }

    /*
     * Try picking up description from our NIC map.
     */
    char szNICInstance[128];
    RTStrPrintf(szNICInstance, sizeof(szNICInstance), "%s%d", pszIface, Instance);
    char szNICDesc[256];
    std::string Description = SolarisNICMap[pszIface];
    if (Description != "")
        RTStrPrintf(szNICDesc, sizeof(szNICDesc), "%s - %s", szNICInstance, Description.c_str());
    else
        RTStrPrintf(szNICDesc, sizeof(szNICDesc), "%s - Ethernet", szNICInstance);

    /*
     * Construct UUID with interface name and the MAC address if available.
     */
    RTUUID Uuid;
    RTUuidClear(&Uuid);
    memcpy(&Uuid, szNICInstance, RT_MIN(strlen(szNICInstance), sizeof(Uuid)));
    Uuid.Gen.u8ClockSeqHiAndReserved = (Uuid.Gen.u8ClockSeqHiAndReserved & 0x3f) | 0x80;
    Uuid.Gen.u16TimeHiAndVersion = (Uuid.Gen.u16TimeHiAndVersion & 0x0fff) | 0x4000;
    if (pMac)
    {
        Uuid.Gen.au8Node[0] = pMac->au8[0];
        Uuid.Gen.au8Node[1] = pMac->au8[1];
        Uuid.Gen.au8Node[2] = pMac->au8[2];
        Uuid.Gen.au8Node[3] = pMac->au8[3];
        Uuid.Gen.au8Node[4] = pMac->au8[4];
        Uuid.Gen.au8Node[5] = pMac->au8[5];
    }

    ComObjPtr<HostNetworkInterface> IfObj;
    IfObj.createObject();
    if (SUCCEEDED(IfObj->init(Bstr(szNICDesc), Guid(Uuid))))
        pList->push_back(IfObj);
}

static boolean_t vboxSolarisAddLinkHostIface(const char *pszIface, void *pvHostNetworkInterfaceList)
{
    /*
     * Clip off the zone instance number from the interface name (if any).
     */
    char szIfaceName[128];
    strcpy(szIfaceName, pszIface);
    char *pszColon = (char *)memchr(szIfaceName, ':', sizeof(szIfaceName));
    if (pszColon)
        *pszColon = '\0';

    /*
     * Get the instance number from the interface name, then clip it off.
     */
    int cbInstance = 0;
    int cbIface = strlen(szIfaceName);
    const char *pszEnd = pszIface + cbIface - 1;
    for (int i = 0; i < cbIface - 1; i++)
    {
        if (!RT_C_IS_DIGIT(*pszEnd))
            break;
        cbInstance++;
        pszEnd--;
    }

    int Instance = atoi(pszEnd + 1);
    strncpy(szIfaceName, pszIface, cbIface - cbInstance);
    szIfaceName[cbIface - cbInstance] = '\0';

    /*
     * Add the interface.
     */
    vboxSolarisAddHostIface(szIfaceName, Instance, NULL, pvHostNetworkInterfaceList);

    /*
     * Continue walking...
     */
    return _B_FALSE;
}

static bool vboxSolarisSortNICList(const ComObjPtr <HostNetworkInterface> Iface1, const ComObjPtr <HostNetworkInterface> Iface2)
{
    Bstr Iface1Str;
    (*Iface1).COMGETTER(Name) (Iface1Str.asOutParam());

    Bstr Iface2Str;
    (*Iface2).COMGETTER(Name) (Iface2Str.asOutParam());

    return Iface1Str < Iface2Str;
}

static bool vboxSolarisSameNIC(const ComObjPtr <HostNetworkInterface> Iface1, const ComObjPtr <HostNetworkInterface> Iface2)
{
    Bstr Iface1Str;
    (*Iface1).COMGETTER(Name) (Iface1Str.asOutParam());

    Bstr Iface2Str;
    (*Iface2).COMGETTER(Name) (Iface2Str.asOutParam());

    return (Iface1Str == Iface2Str);
}

# ifdef VBOX_SOLARIS_NSL_RESOLVED
static int vboxSolarisAddPhysHostIface(di_node_t Node, di_minor_t Minor, void *pvHostNetworkInterfaceList)
{
    /*
     * Skip aggregations.
     */
    if (!strcmp(di_driver_name(Node), "aggr"))
        return DI_WALK_CONTINUE;

    /*
     * Skip softmacs.
     */
    if (!strcmp(di_driver_name(Node), "softmac"))
        return DI_WALK_CONTINUE;

    vboxSolarisAddHostIface(di_driver_name(Node), di_instance(Node), NULL, pvHostNetworkInterfaceList);
    return DI_WALK_CONTINUE;
}
# endif /* VBOX_SOLARIS_NSL_RESOLVED */

#endif

#if defined(RT_OS_WINDOWS) && defined(VBOX_WITH_NETFLT)
# define VBOX_APP_NAME L"VirtualBox"

static int vboxNetWinAddComponent(std::list <ComObjPtr <HostNetworkInterface> > * pPist, INetCfgComponent * pncc)
{
    LPWSTR              lpszName;
    GUID                IfGuid;
    HRESULT hr;
    int rc = VERR_GENERAL_FAILURE;

    hr = pncc->GetDisplayName( &lpszName );
    Assert(hr == S_OK);
    if(hr == S_OK)
    {
        size_t cUnicodeName = wcslen(lpszName) + 1;
        size_t uniLen = (cUnicodeName * 2 + sizeof (OLECHAR) - 1) / sizeof (OLECHAR);
        Bstr name (uniLen + 1 /* extra zero */);
        wcscpy((wchar_t *) name.mutableRaw(), lpszName);

        hr = pncc->GetInstanceGuid(&IfGuid);
        Assert(hr == S_OK);
        if (hr == S_OK)
        {
            /* create a new object and add it to the list */
            ComObjPtr <HostNetworkInterface> iface;
            iface.createObject();
            /* remove the curly bracket at the end */
            if (SUCCEEDED (iface->init (name, Guid (IfGuid))))
            {
                pPist->push_back (iface);
                rc = VINF_SUCCESS;
            }
            else
            {
                Assert(0);
            }
        }
        CoTaskMemFree(lpszName);
    }

    return rc;
}

#endif /* #if defined(RT_OS_WINDOWS) && defined(VBOX_WITH_NETFLT) */

/**
 * Returns a list of host network interfaces.
 *
 * @returns COM status code
 * @param drives address of result pointer
 */
STDMETHODIMP Host::COMGETTER(NetworkInterfaces) (ComSafeArrayOut (IHostNetworkInterface *, aNetworkInterfaces))
{
#if defined(RT_OS_WINDOWS) ||  defined(VBOX_WITH_NETFLT) /*|| defined(RT_OS_OS2)*/
    if (ComSafeArrayOutIsNull (aNetworkInterfaces))
        return E_POINTER;

    AutoWriteLock alock (this);
    CHECK_READY();

    std::list <ComObjPtr <HostNetworkInterface> > list;

#ifdef VBOX_WITH_HOSTNETIF_API
    int rc = NetIfList(list);
    if (rc)
    {
        Log(("Failed to get host network interface list with rc=%Vrc\n", rc));
    }
#else
# if defined(RT_OS_DARWIN)
    PDARWINETHERNIC pEtherNICs = DarwinGetEthernetControllers();
    while (pEtherNICs)
    {
        ComObjPtr<HostNetworkInterface> IfObj;
        IfObj.createObject();
        if (SUCCEEDED(IfObj->init(Bstr(pEtherNICs->szName), Guid(pEtherNICs->Uuid))))
            list.push_back(IfObj);

        /* next, free current */
        void *pvFree = pEtherNICs;
        pEtherNICs = pEtherNICs->pNext;
        RTMemFree(pvFree);
    }

# elif defined(RT_OS_SOLARIS)

#  ifdef VBOX_SOLARIS_NSL_RESOLVED

    /*
     * Use libdevinfo for determining all physical interfaces.
     */
    di_node_t Root;
    Root = di_init("/", DINFOCACHE);
    if (Root != DI_NODE_NIL)
    {
        di_walk_minor(Root, DDI_NT_NET, 0, &list, vboxSolarisAddPhysHostIface);
        di_fini(Root);
    }

    /*
     * Use libdlpi for determining all DLPI interfaces.
     */
    if (VBoxSolarisLibDlpiFound())
        g_pfnLibDlpiWalk(vboxSolarisAddLinkHostIface, &list, 0);

#  endif    /* VBOX_SOLARIS_NSL_RESOLVED */

    /*
     * This gets only the list of all plumbed logical interfaces.
     * This is needed for zones which cannot access the device tree
     * and in this case we just let them use the list of plumbed interfaces
     * on the zone.
     */
    int Sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
    if (Sock > 0)
    {
        struct lifnum IfNum;
        memset(&IfNum, 0, sizeof(IfNum));
        IfNum.lifn_family = AF_INET;
        int rc = ioctl(Sock, SIOCGLIFNUM, &IfNum);
        if (!rc)
        {
            struct lifreq Ifaces[24];
            struct lifconf IfConfig;
            memset(&IfConfig, 0, sizeof(IfConfig));
            IfConfig.lifc_family = AF_INET;
            IfConfig.lifc_len = sizeof(Ifaces);
            IfConfig.lifc_buf = (caddr_t)&(Ifaces[0]);
            rc = ioctl(Sock, SIOCGLIFCONF, &IfConfig);
            if (!rc)
            {
                for (int i = 0; i < IfNum.lifn_count; i++)
                {
                    /*
                     * Skip loopback interfaces.
                     */
                    if (!strncmp(Ifaces[i].lifr_name, "lo", 2))
                        continue;

#if 0
                    rc = ioctl(Sock, SIOCGLIFADDR, &(Ifaces[i]));
                    if (!rc)
                    {
                        RTMAC Mac;
                        struct arpreq ArpReq;
                        memcpy(&ArpReq.arp_pa, &Ifaces[i].lifr_addr, sizeof(struct sockaddr_in));

                        /*
                         * We might fail if the interface has not been assigned an IP address.
                         * That doesn't matter; as long as it's plumbed we can pick it up.
                         * But, if it has not acquired an IP address we cannot obtain it's MAC
                         * address this way, so we just use all zeros there.
                         */
                        rc = ioctl(Sock, SIOCGARP, &ArpReq);
                        if (!rc)
                            memcpy(&Mac, ArpReq.arp_ha.sa_data, sizeof(RTMAC));
                        else
                            memset(&Mac, 0, sizeof(Mac));

                        char szNICDesc[LIFNAMSIZ + 256];
                        char *pszIface = Ifaces[i].lifr_name;
                        strcpy(szNICDesc, pszIface);

                        vboxSolarisAddLinkHostIface(pszIface, &list);
                    }
#endif

                    char *pszIface = Ifaces[i].lifr_name;
                    vboxSolarisAddLinkHostIface(pszIface, &list);
                }
            }
        }
        close(Sock);
    }

    /*
     * Weed out duplicates caused by dlpi_walk inconsistencies across Nevadas.
     */
    list.sort(vboxSolarisSortNICList);
    list.unique(vboxSolarisSameNIC);

# elif defined RT_OS_WINDOWS
#  ifndef VBOX_WITH_NETFLT
    static const char *NetworkKey = "SYSTEM\\CurrentControlSet\\Control\\Network\\"
                                    "{4D36E972-E325-11CE-BFC1-08002BE10318}";
    HKEY hCtrlNet;
    LONG status;
    DWORD len;
    status = RegOpenKeyExA (HKEY_LOCAL_MACHINE, NetworkKey, 0, KEY_READ, &hCtrlNet);
    if (status != ERROR_SUCCESS)
        return setError (E_FAIL, tr("Could not open registry key \"%s\""), NetworkKey);

    for (int i = 0;; ++ i)
    {
        char szNetworkGUID [256];
        HKEY hConnection;
        char szNetworkConnection [256];

        len = sizeof (szNetworkGUID);
        status = RegEnumKeyExA (hCtrlNet, i, szNetworkGUID, &len, NULL, NULL, NULL, NULL);
        if (status != ERROR_SUCCESS)
            break;

        if (!IsTAPDevice(szNetworkGUID))
            continue;

        RTStrPrintf (szNetworkConnection, sizeof (szNetworkConnection),
                     "%s\\Connection", szNetworkGUID);
        status = RegOpenKeyExA (hCtrlNet, szNetworkConnection, 0, KEY_READ,  &hConnection);
        if (status == ERROR_SUCCESS)
        {
            DWORD dwKeyType;
            status = RegQueryValueExW (hConnection, TEXT("Name"), NULL,
                                       &dwKeyType, NULL, &len);
            if (status == ERROR_SUCCESS && dwKeyType == REG_SZ)
            {
                size_t uniLen = (len + sizeof (OLECHAR) - 1) / sizeof (OLECHAR);
                Bstr name (uniLen + 1 /* extra zero */);
                status = RegQueryValueExW (hConnection, TEXT("Name"), NULL,
                                           &dwKeyType, (LPBYTE) name.mutableRaw(), &len);
                if (status == ERROR_SUCCESS)
                {
                    LogFunc(("Connection name %ls\n", name.mutableRaw()));
                    /* put a trailing zero, just in case (see MSDN) */
                    name.mutableRaw() [uniLen] = 0;
                    /* create a new object and add it to the list */
                    ComObjPtr <HostNetworkInterface> iface;
                    iface.createObject();
                    /* remove the curly bracket at the end */
                    szNetworkGUID [strlen(szNetworkGUID) - 1] = '\0';
                    if (SUCCEEDED (iface->init (name, Guid (szNetworkGUID + 1))))
                        list.push_back (iface);
                }
            }
            RegCloseKey (hConnection);
        }
    }
    RegCloseKey (hCtrlNet);
#  else /* #  if defined VBOX_WITH_NETFLT */
    INetCfg              *pNc;
    INetCfgComponent     *pMpNcc;
    INetCfgComponent     *pTcpIpNcc;
    LPWSTR               lpszApp;
    HRESULT              hr;
    IEnumNetCfgBindingPath      *pEnumBp;
    INetCfgBindingPath          *pBp;
    IEnumNetCfgBindingInterface *pEnumBi;
    INetCfgBindingInterface *pBi;

    /* we are using the INetCfg API for getting the list of miniports */
    hr = VBoxNetCfgWinQueryINetCfg( FALSE,
                       VBOX_APP_NAME,
                       &pNc,
                       &lpszApp );
    Assert(hr == S_OK);
    if(hr == S_OK)
    {
#ifdef VBOX_NETFLT_ONDEMAND_BIND
        /* for the protocol-based approach for now we just get all miniports the MS_TCPIP protocol binds to */
        hr = pNc->FindComponent(L"MS_TCPIP", &pTcpIpNcc);
#else
        /* for the filter-based approach we get all miniports our filter (sun_VBoxNetFlt)is bound to */
        hr = pNc->FindComponent(L"sun_VBoxNetFlt", &pTcpIpNcc);
# ifndef VBOX_WITH_HARDENING
        if(hr != S_OK)
        {
            /* TODO: try to install the netflt from here */
        }
# endif

#endif

        if(hr == S_OK)
        {
            hr = VBoxNetCfgWinGetBindingPathEnum(pTcpIpNcc, EBP_BELOW, &pEnumBp);
            Assert(hr == S_OK);
            if ( hr == S_OK )
            {
                hr = VBoxNetCfgWinGetFirstBindingPath(pEnumBp, &pBp);
                Assert(hr == S_OK || hr == S_FALSE);
                while( hr == S_OK )
                {
                    /* S_OK == enabled, S_FALSE == disabled */
                    if(pBp->IsEnabled() == S_OK)
                    {
                        hr = VBoxNetCfgWinGetBindingInterfaceEnum(pBp, &pEnumBi);
                        Assert(hr == S_OK);
                        if ( hr == S_OK )
                        {
                            hr = VBoxNetCfgWinGetFirstBindingInterface(pEnumBi, &pBi);
                            Assert(hr == S_OK);
                            while(hr == S_OK)
                            {
                                hr = pBi->GetLowerComponent( &pMpNcc );
                                Assert(hr == S_OK);
                                if(hr == S_OK)
                                {
                                    ULONG uComponentStatus;
                                    hr = pMpNcc->GetDeviceStatus(&uComponentStatus);
                                    Assert(hr == S_OK);
                                    if(hr == S_OK)
                                    {
                                        if(uComponentStatus == 0)
                                        {
                                            vboxNetWinAddComponent(&list, pMpNcc);
                                        }
                                    }
                                    VBoxNetCfgWinReleaseRef( pMpNcc );
                                }
                                VBoxNetCfgWinReleaseRef(pBi);

                                hr = VBoxNetCfgWinGetNextBindingInterface(pEnumBi, &pBi);
                            }
                            VBoxNetCfgWinReleaseRef(pEnumBi);
                        }
                    }
                    VBoxNetCfgWinReleaseRef(pBp);

                    hr = VBoxNetCfgWinGetNextBindingPath(pEnumBp, &pBp);
                }
                VBoxNetCfgWinReleaseRef(pEnumBp);
            }
            VBoxNetCfgWinReleaseRef(pTcpIpNcc);
        }
        else
        {
            LogRel(("failed to get the sun_VBoxNetFlt component, error (0x%x)", hr));
        }

        VBoxNetCfgWinReleaseINetCfg(pNc, FALSE);
    }
#  endif /* #  if defined VBOX_WITH_NETFLT */


# elif defined RT_OS_LINUX
    int sock = socket(AF_INET, SOCK_DGRAM, 0);
    if (sock >= 0)
    {
        char pBuffer[2048];
        struct ifconf ifConf;
        ifConf.ifc_len = sizeof(pBuffer);
        ifConf.ifc_buf = pBuffer;
        if (ioctl(sock, SIOCGIFCONF, &ifConf) >= 0)
        {
            for (struct ifreq *pReq = ifConf.ifc_req; (char*)pReq < pBuffer + ifConf.ifc_len; pReq++)
            {
                if (ioctl(sock, SIOCGIFHWADDR, pReq) >= 0)
                {
                    if (pReq->ifr_hwaddr.sa_family == ARPHRD_ETHER)
                    {
                        RTUUID uuid;
                        Assert(sizeof(uuid) <= sizeof(*pReq));
                        memcpy(&uuid, pReq, sizeof(uuid));

                        ComObjPtr<HostNetworkInterface> IfObj;
                        IfObj.createObject();
                        if (SUCCEEDED(IfObj->init(Bstr(pReq->ifr_name), Guid(uuid))))
                            list.push_back(IfObj);
                    }
                }
            }
        }
        close(sock);
    }
# endif /* RT_OS_LINUX */
#endif
    SafeIfaceArray <IHostNetworkInterface> networkInterfaces (list);
    networkInterfaces.detachTo (ComSafeArrayOutArg (aNetworkInterfaces));

    return S_OK;

#else
    /* Not implemented / supported on this platform. */
    ReturnComNotImplemented();
#endif
}

STDMETHODIMP Host::COMGETTER(USBDevices)(IHostUSBDeviceCollection **aUSBDevices)
{
#ifdef VBOX_WITH_USB
    CheckComArgOutPointerValid(aUSBDevices);

    AutoWriteLock alock (this);
    CHECK_READY();

    MultiResult rc = checkUSBProxyService();
    CheckComRCReturnRC (rc);

    return mUSBProxyService->getDeviceCollection (aUSBDevices);

#else
    /* Note: The GUI depends on this method returning E_NOTIMPL with no
     * extended error info to indicate that USB is simply not available
     * (w/o treating it as a failure), for example, as in OSE. */
    ReturnComNotImplemented();
#endif
}

STDMETHODIMP Host::COMGETTER(USBDeviceFilters) (IHostUSBDeviceFilterCollection **aUSBDeviceFilters)
{
#ifdef VBOX_WITH_USB
    CheckComArgOutPointerValid(aUSBDeviceFilters);

    AutoWriteLock alock (this);
    CHECK_READY();

    MultiResult rc = checkUSBProxyService();
    CheckComRCReturnRC (rc);

    ComObjPtr <HostUSBDeviceFilterCollection> collection;
    collection.createObject();
    collection->init (mUSBDeviceFilters);
    collection.queryInterfaceTo (aUSBDeviceFilters);

    return rc;
#else
    /* Note: The GUI depends on this method returning E_NOTIMPL with no
     * extended error info to indicate that USB is simply not available
     * (w/o treating it as a failure), for example, as in OSE. */
    ReturnComNotImplemented();
#endif
}

/**
 * Returns the number of installed logical processors
 *
 * @returns COM status code
 * @param   count address of result variable
 */
STDMETHODIMP Host::COMGETTER(ProcessorCount)(ULONG *aCount)
{
    CheckComArgOutPointerValid(aCount);
    AutoWriteLock alock (this);
    CHECK_READY();
    *aCount = RTMpGetPresentCount();
    return S_OK;
}

/**
 * Returns the number of online logical processors
 *
 * @returns COM status code
 * @param   count address of result variable
 */
STDMETHODIMP Host::COMGETTER(ProcessorOnlineCount)(ULONG *aCount)
{
    CheckComArgOutPointerValid(aCount);
    AutoWriteLock alock (this);
    CHECK_READY();
    *aCount = RTMpGetOnlineCount();
    return S_OK;
}

/**
 * Returns the (approximate) maximum speed of the given host CPU in MHz
 *
 * @returns COM status code
 * @param   cpu id to get info for.
 * @param   speed address of result variable, speed is 0 if unknown or aCpuId is invalid.
 */
STDMETHODIMP Host::GetProcessorSpeed(ULONG aCpuId, ULONG *aSpeed)
{
    CheckComArgOutPointerValid(aSpeed);
    AutoWriteLock alock (this);
    CHECK_READY();
    *aSpeed = RTMpGetMaxFrequency(aCpuId);
    return S_OK;
}
/**
 * Returns a description string for the host CPU
 *
 * @returns COM status code
 * @param   cpu id to get info for.
 * @param   description address of result variable, NULL if known or aCpuId is invalid.
 */
STDMETHODIMP Host::GetProcessorDescription(ULONG aCpuId, BSTR *aDescription)
{
    CheckComArgOutPointerValid(aDescription);
    AutoWriteLock alock (this);
    CHECK_READY();
    /** @todo */
    ReturnComNotImplemented();
}

/**
 * Returns whether a host processor feature is supported or not
 *
 * @returns COM status code
 * @param   Feature to query.
 * @param   address of supported bool result variable
 */
STDMETHODIMP Host::GetProcessorFeature(ProcessorFeature_T aFeature, BOOL *aSupported)
{
    CheckComArgOutPointerValid(aSupported);
    AutoWriteLock alock (this);
    CHECK_READY();

    switch (aFeature)
    {
    case ProcessorFeature_HWVirtEx:
        *aSupported = fVTxAMDVSupported;
        break;

    case ProcessorFeature_PAE:
        *aSupported = fPAESupported;
        break;

    case ProcessorFeature_LongMode:
        *aSupported = fLongModeSupported;
        break;

    default:
        ReturnComNotImplemented();
    }
    return S_OK;
}

/**
 * Returns the amount of installed system memory in megabytes
 *
 * @returns COM status code
 * @param   size address of result variable
 */
STDMETHODIMP Host::COMGETTER(MemorySize)(ULONG *aSize)
{
    CheckComArgOutPointerValid(aSize);
    AutoWriteLock alock (this);
    CHECK_READY();
    /* @todo This is an ugly hack. There must be a function in IPRT for that. */
    pm::CollectorHAL *hal = pm::createHAL();
    if (!hal)
        return E_FAIL;
    ULONG tmp;
    int rc = hal->getHostMemoryUsage(aSize, &tmp, &tmp);
    *aSize /= 1024;
    delete hal;
    return rc;
}

/**
 * Returns the current system memory free space in megabytes
 *
 * @returns COM status code
 * @param   available address of result variable
 */
STDMETHODIMP Host::COMGETTER(MemoryAvailable)(ULONG *aAvailable)
{
    CheckComArgOutPointerValid(aAvailable);
    AutoWriteLock alock (this);
    CHECK_READY();
    /* @todo This is an ugly hack. There must be a function in IPRT for that. */
    pm::CollectorHAL *hal = pm::createHAL();
    if (!hal)
        return E_FAIL;
    ULONG tmp;
    int rc = hal->getHostMemoryUsage(&tmp, &tmp, aAvailable);
    *aAvailable /= 1024;
    delete hal;
    return rc;
}

/**
 * Returns the name string of the host operating system
 *
 * @returns COM status code
 * @param   os address of result variable
 */
STDMETHODIMP Host::COMGETTER(OperatingSystem)(BSTR *aOs)
{
    CheckComArgOutPointerValid(aOs);
    AutoWriteLock alock (this);
    CHECK_READY();
    /** @todo */
    ReturnComNotImplemented();
}

/**
 * Returns the version string of the host operating system
 *
 * @returns COM status code
 * @param   os address of result variable
 */
STDMETHODIMP Host::COMGETTER(OSVersion)(BSTR *aVersion)
{
    CheckComArgOutPointerValid(aVersion);
    AutoWriteLock alock (this);
    CHECK_READY();
    /** @todo */
    ReturnComNotImplemented();
}

/**
 * Returns the current host time in milliseconds since 1970-01-01 UTC.
 *
 * @returns COM status code
 * @param   time address of result variable
 */
STDMETHODIMP Host::COMGETTER(UTCTime)(LONG64 *aUTCTime)
{
    CheckComArgOutPointerValid(aUTCTime);
    AutoWriteLock alock (this);
    CHECK_READY();
    RTTIMESPEC now;
    *aUTCTime = RTTimeSpecGetMilli(RTTimeNow(&now));
    return S_OK;
}

// IHost methods
////////////////////////////////////////////////////////////////////////////////

#ifdef RT_OS_WINDOWS
/** @todo REMOVE. OBSOLETE NOW. */
/**
 * Returns TRUE if the Windows version is 6.0 or greater (i.e. it's Vista and
 * later OSes) and it has the UAC (User Account Control) feature enabled.
 */
static BOOL IsUACEnabled()
{
    LONG rc = 0;

    OSVERSIONINFOEX info;
    ZeroMemory (&info, sizeof (OSVERSIONINFOEX));
    info.dwOSVersionInfoSize = sizeof (OSVERSIONINFOEX);
    rc = GetVersionEx ((OSVERSIONINFO *) &info);
    AssertReturn (rc != 0, FALSE);

    LogFlowFunc (("dwMajorVersion=%d, dwMinorVersion=%d\n",
                  info.dwMajorVersion, info.dwMinorVersion));

    /* we are interested only in Vista (and newer versions...). In all
     * earlier versions UAC is not present. */
    if (info.dwMajorVersion < 6)
        return FALSE;

    /* the default EnableLUA value is 1 (Enabled) */
    DWORD dwEnableLUA = 1;

    HKEY hKey;
    rc = RegOpenKeyExA (HKEY_LOCAL_MACHINE,
                        "Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System",
                        0, KEY_QUERY_VALUE, &hKey);

    Assert (rc == ERROR_SUCCESS || rc == ERROR_PATH_NOT_FOUND);
    if (rc == ERROR_SUCCESS)
    {

        DWORD cbEnableLUA = sizeof (dwEnableLUA);
        rc = RegQueryValueExA (hKey, "EnableLUA", NULL, NULL,
                               (LPBYTE) &dwEnableLUA, &cbEnableLUA);

        RegCloseKey (hKey);

        Assert (rc == ERROR_SUCCESS || rc == ERROR_FILE_NOT_FOUND);
    }

    LogFlowFunc (("rc=%d, dwEnableLUA=%d\n", rc, dwEnableLUA));

    return dwEnableLUA == 1;
}

struct NetworkInterfaceHelperClientData
{
    SVCHlpMsg::Code msgCode;
    /* for SVCHlpMsg::CreateHostNetworkInterface */
    Bstr name;
    ComObjPtr <HostNetworkInterface> iface;
    /* for SVCHlpMsg::RemoveHostNetworkInterface */
    Guid guid;
};

STDMETHODIMP
Host::CreateHostNetworkInterface (IN_BSTR aName,
                                  IHostNetworkInterface **aHostNetworkInterface,
                                  IProgress **aProgress)
{
    CheckComArgNotNull(aName);
    CheckComArgOutPointerValid(aHostNetworkInterface);
    CheckComArgOutPointerValid(aProgress);

    AutoWriteLock alock (this);
    CHECK_READY();

    HRESULT rc = S_OK;

    /* first check whether an interface with the given name already exists */
    {
        ComPtr <IHostNetworkInterface> iface;
        if (SUCCEEDED (FindHostNetworkInterfaceByName (aName, iface.asOutParam())))
            return setError (E_INVALIDARG,
                             tr ("Host network interface '%ls' already exists"), aName);
    }

    /* create a progress object */
    ComObjPtr <Progress> progress;
    progress.createObject();
    rc = progress->init (mParent, static_cast <IHost *> (this),
                         Bstr (tr ("Creating host network interface")),
                         FALSE /* aCancelable */);
    CheckComRCReturnRC (rc);
    progress.queryInterfaceTo (aProgress);

    /* create a new uninitialized host interface object */
    ComObjPtr <HostNetworkInterface> iface;
    iface.createObject();
    iface.queryInterfaceTo (aHostNetworkInterface);

    /* create the networkInterfaceHelperClient() argument */
    std::auto_ptr <NetworkInterfaceHelperClientData>
        d (new NetworkInterfaceHelperClientData());
    AssertReturn (d.get(), E_OUTOFMEMORY);

    d->msgCode = SVCHlpMsg::CreateHostNetworkInterface;
    d->name = aName;
    d->iface = iface;

    rc = mParent->startSVCHelperClient (
        IsUACEnabled() == TRUE /* aPrivileged */,
        networkInterfaceHelperClient,
        static_cast <void *> (d.get()),
        progress);

    if (SUCCEEDED (rc))
    {
        /* d is now owned by networkInterfaceHelperClient(), so release it */
        d.release();
    }

    return rc;
}

STDMETHODIMP
Host::RemoveHostNetworkInterface (IN_GUID aId,
                                  IHostNetworkInterface **aHostNetworkInterface,
                                  IProgress **aProgress)
{
    CheckComArgOutPointerValid(aHostNetworkInterface);
    CheckComArgOutPointerValid(aProgress);

    AutoWriteLock alock (this);
    CHECK_READY();

    HRESULT rc = S_OK;

    /* first check whether an interface with the given name already exists */
    {
        ComPtr <IHostNetworkInterface> iface;
        if (FAILED (FindHostNetworkInterfaceById (aId, iface.asOutParam())))
            return setError (VBOX_E_OBJECT_NOT_FOUND,
                tr ("Host network interface with UUID {%RTuuid} does not exist"),
                Guid (aId).raw());

        /* return the object to be removed to the caller */
        iface.queryInterfaceTo (aHostNetworkInterface);
    }

    /* create a progress object */
    ComObjPtr <Progress> progress;
    progress.createObject();
    rc = progress->init (mParent, static_cast <IHost *> (this),
                        Bstr (tr ("Removing host network interface")),
                        FALSE /* aCancelable */);
    CheckComRCReturnRC (rc);
    progress.queryInterfaceTo (aProgress);

    /* create the networkInterfaceHelperClient() argument */
    std::auto_ptr <NetworkInterfaceHelperClientData>
        d (new NetworkInterfaceHelperClientData());
    AssertReturn (d.get(), E_OUTOFMEMORY);

    d->msgCode = SVCHlpMsg::RemoveHostNetworkInterface;
    d->guid = aId;

    rc = mParent->startSVCHelperClient (
        IsUACEnabled() == TRUE /* aPrivileged */,
        networkInterfaceHelperClient,
        static_cast <void *> (d.get()),
        progress);

    if (SUCCEEDED (rc))
    {
        /* d is now owned by networkInterfaceHelperClient(), so release it */
        d.release();
    }

    return rc;
}

#endif /* RT_OS_WINDOWS */

STDMETHODIMP Host::CreateUSBDeviceFilter (IN_BSTR aName, IHostUSBDeviceFilter **aFilter)
{
#ifdef VBOX_WITH_USB
    CheckComArgStrNotEmptyOrNull(aName);
    CheckComArgOutPointerValid(aFilter);

    AutoWriteLock alock (this);
    CHECK_READY();

    ComObjPtr <HostUSBDeviceFilter> filter;
    filter.createObject();
    HRESULT rc = filter->init (this, aName);
    ComAssertComRCRet (rc, rc);
    rc = filter.queryInterfaceTo (aFilter);
    AssertComRCReturn (rc, rc);
    return S_OK;
#else
    /* Note: The GUI depends on this method returning E_NOTIMPL with no
     * extended error info to indicate that USB is simply not available
     * (w/o treating it as a failure), for example, as in OSE. */
    ReturnComNotImplemented();
#endif
}

STDMETHODIMP Host::InsertUSBDeviceFilter (ULONG aPosition, IHostUSBDeviceFilter *aFilter)
{
#ifdef VBOX_WITH_USB
    CheckComArgNotNull(aFilter);

    /* Note: HostUSBDeviceFilter and USBProxyService also uses this lock. */
    AutoWriteLock alock (this);
    CHECK_READY();

    MultiResult rc = checkUSBProxyService();
    CheckComRCReturnRC (rc);

    ComObjPtr <HostUSBDeviceFilter> filter = getDependentChild (aFilter);
    if (!filter)
        return setError (VBOX_E_INVALID_OBJECT_STATE,
            tr ("The given USB device filter is not created within "
                "this VirtualBox instance"));

    if (filter->mInList)
        return setError (E_INVALIDARG,
            tr ("The given USB device filter is already in the list"));

    /* iterate to the position... */
    USBDeviceFilterList::iterator it = mUSBDeviceFilters.begin();
    std::advance (it, aPosition);
    /* ...and insert */
    mUSBDeviceFilters.insert (it, filter);
    filter->mInList = true;

    /* notify the proxy (only when the filter is active) */
    if (mUSBProxyService->isActive() && filter->data().mActive)
    {
        ComAssertRet (filter->id() == NULL, E_FAIL);
        filter->id() = mUSBProxyService->insertFilter (&filter->data().mUSBFilter);
    }

    /* save the global settings */
    alock.unlock();
    return rc = mParent->saveSettings();
#else
    /* Note: The GUI depends on this method returning E_NOTIMPL with no
     * extended error info to indicate that USB is simply not available
     * (w/o treating it as a failure), for example, as in OSE. */
    ReturnComNotImplemented();
#endif
}

STDMETHODIMP Host::RemoveUSBDeviceFilter (ULONG aPosition, IHostUSBDeviceFilter **aFilter)
{
#ifdef VBOX_WITH_USB
    CheckComArgOutPointerValid(aFilter);

    /* Note: HostUSBDeviceFilter and USBProxyService also uses this lock. */
    AutoWriteLock alock (this);
    CHECK_READY();

    MultiResult rc = checkUSBProxyService();
    CheckComRCReturnRC (rc);

    if (!mUSBDeviceFilters.size())
        return setError (E_INVALIDARG,
            tr ("The USB device filter list is empty"));

    if (aPosition >= mUSBDeviceFilters.size())
        return setError (E_INVALIDARG,
            tr ("Invalid position: %lu (must be in range [0, %lu])"),
            aPosition, mUSBDeviceFilters.size() - 1);

    ComObjPtr <HostUSBDeviceFilter> filter;
    {
        /* iterate to the position... */
        USBDeviceFilterList::iterator it = mUSBDeviceFilters.begin();
        std::advance (it, aPosition);
        /* ...get an element from there... */
        filter = *it;
        /* ...and remove */
        filter->mInList = false;
        mUSBDeviceFilters.erase (it);
    }

    filter.queryInterfaceTo (aFilter);

    /* notify the proxy (only when the filter is active) */
    if (mUSBProxyService->isActive() && filter->data().mActive)
    {
        ComAssertRet (filter->id() != NULL, E_FAIL);
        mUSBProxyService->removeFilter (filter->id());
        filter->id() = NULL;
    }

    /* save the global settings */
    alock.unlock();
    return rc = mParent->saveSettings();
#else
    /* Note: The GUI depends on this method returning E_NOTIMPL with no
     * extended error info to indicate that USB is simply not available
     * (w/o treating it as a failure), for example, as in OSE. */
    ReturnComNotImplemented();
#endif
}

// public methods only for internal purposes
////////////////////////////////////////////////////////////////////////////////

HRESULT Host::loadSettings (const settings::Key &aGlobal)
{
    using namespace settings;

    AutoWriteLock alock (this);
    CHECK_READY();

    AssertReturn (!aGlobal.isNull(), E_FAIL);

    HRESULT rc = S_OK;

#ifdef VBOX_WITH_USB
    Key::List filters = aGlobal.key ("USBDeviceFilters").keys ("DeviceFilter");
    for (Key::List::const_iterator it = filters.begin();
         it != filters.end(); ++ it)
    {
        Bstr name = (*it).stringValue ("name");
        bool active = (*it).value <bool> ("active");

        Bstr vendorId = (*it).stringValue ("vendorId");
        Bstr productId = (*it).stringValue ("productId");
        Bstr revision = (*it).stringValue ("revision");
        Bstr manufacturer = (*it).stringValue ("manufacturer");
        Bstr product = (*it).stringValue ("product");
        Bstr serialNumber = (*it).stringValue ("serialNumber");
        Bstr port = (*it).stringValue ("port");

        USBDeviceFilterAction_T action;
        action = USBDeviceFilterAction_Ignore;
        const char *actionStr = (*it).stringValue ("action");
        if (strcmp (actionStr, "Ignore") == 0)
            action = USBDeviceFilterAction_Ignore;
        else
        if (strcmp (actionStr, "Hold") == 0)
            action = USBDeviceFilterAction_Hold;
        else
            AssertMsgFailed (("Invalid action: '%s'\n", actionStr));

        ComObjPtr <HostUSBDeviceFilter> filterObj;
        filterObj.createObject();
        rc = filterObj->init (this,
                              name, active, vendorId, productId, revision,
                              manufacturer, product, serialNumber, port,
                              action);
        /* error info is set by init() when appropriate */
        CheckComRCBreakRC (rc);

        mUSBDeviceFilters.push_back (filterObj);
        filterObj->mInList = true;

        /* notify the proxy (only when the filter is active) */
        if (filterObj->data().mActive)
        {
            HostUSBDeviceFilter *flt = filterObj; /* resolve ambiguity */
            flt->id() = mUSBProxyService->insertFilter (&filterObj->data().mUSBFilter);
        }
    }
#endif /* VBOX_WITH_USB */

    return rc;
}

HRESULT Host::saveSettings (settings::Key &aGlobal)
{
    using namespace settings;

    AutoWriteLock alock (this);
    CHECK_READY();

    ComAssertRet (!aGlobal.isNull(), E_FAIL);

#ifdef VBOX_WITH_USB
    /* first, delete the entry */
    Key filters = aGlobal.findKey ("USBDeviceFilters");
    if (!filters.isNull())
        filters.zap();
    /* then, recreate it */
    filters = aGlobal.createKey ("USBDeviceFilters");

    USBDeviceFilterList::const_iterator it = mUSBDeviceFilters.begin();
    while (it != mUSBDeviceFilters.end())
    {
        AutoWriteLock filterLock (*it);
        const HostUSBDeviceFilter::Data &data = (*it)->data();

        Key filter = filters.appendKey ("DeviceFilter");

        filter.setValue <Bstr> ("name", data.mName);
        filter.setValue <bool> ("active", !!data.mActive);

        /* all are optional */
        Bstr str;
        (*it)->COMGETTER (VendorId) (str.asOutParam());
        if (!str.isNull())
            filter.setValue <Bstr> ("vendorId", str);

        (*it)->COMGETTER (ProductId) (str.asOutParam());
        if (!str.isNull())
            filter.setValue <Bstr> ("productId", str);

        (*it)->COMGETTER (Revision) (str.asOutParam());
        if (!str.isNull())
            filter.setValue <Bstr> ("revision", str);

        (*it)->COMGETTER (Manufacturer) (str.asOutParam());
        if (!str.isNull())
            filter.setValue <Bstr> ("manufacturer", str);

        (*it)->COMGETTER (Product) (str.asOutParam());
        if (!str.isNull())
            filter.setValue <Bstr> ("product", str);

        (*it)->COMGETTER (SerialNumber) (str.asOutParam());
        if (!str.isNull())
            filter.setValue <Bstr> ("serialNumber", str);

        (*it)->COMGETTER (Port) (str.asOutParam());
        if (!str.isNull())
            filter.setValue <Bstr> ("port", str);

        /* action is mandatory */
        USBDeviceFilterAction_T action = USBDeviceFilterAction_Null;
        (*it)->COMGETTER (Action) (&action);
        if (action == USBDeviceFilterAction_Ignore)
            filter.setStringValue ("action", "Ignore");
        else if (action == USBDeviceFilterAction_Hold)
            filter.setStringValue ("action", "Hold");
        else
            AssertMsgFailed (("Invalid action: %d\n", action));

        ++ it;
    }
#endif /* VBOX_WITH_USB */

    return S_OK;
}

#ifdef VBOX_WITH_USB
/**
 *  Called by setter methods of all USB device filters.
 */
HRESULT Host::onUSBDeviceFilterChange (HostUSBDeviceFilter *aFilter,
                                       BOOL aActiveChanged /* = FALSE */)
{
    AutoWriteLock alock (this);
    CHECK_READY();

    if (aFilter->mInList)
    {
        if (aActiveChanged)
        {
            // insert/remove the filter from the proxy
            if (aFilter->data().mActive)
            {
                ComAssertRet (aFilter->id() == NULL, E_FAIL);
                aFilter->id() = mUSBProxyService->insertFilter (&aFilter->data().mUSBFilter);
            }
            else
            {
                ComAssertRet (aFilter->id() != NULL, E_FAIL);
                mUSBProxyService->removeFilter (aFilter->id());
                aFilter->id() = NULL;
            }
        }
        else
        {
            if (aFilter->data().mActive)
            {
                // update the filter in the proxy
                ComAssertRet (aFilter->id() != NULL, E_FAIL);
                mUSBProxyService->removeFilter (aFilter->id());
                aFilter->id() = mUSBProxyService->insertFilter (&aFilter->data().mUSBFilter);
            }
        }

        // save the global settings... yeah, on every single filter property change
        alock.unlock();
        return mParent->saveSettings();
    }

    return S_OK;
}


/**
 * Interface for obtaining a copy of the USBDeviceFilterList,
 * used by the USBProxyService.
 *
 * @param   aGlobalFilters      Where to put the global filter list copy.
 * @param   aMachines           Where to put the machine vector.
 */
void Host::getUSBFilters(Host::USBDeviceFilterList *aGlobalFilters, VirtualBox::SessionMachineVector *aMachines)
{
    AutoWriteLock alock (this);

    mParent->getOpenedMachines (*aMachines);
    *aGlobalFilters = mUSBDeviceFilters;
}

#endif /* VBOX_WITH_USB */

// private methods
////////////////////////////////////////////////////////////////////////////////

#if defined(RT_OS_SOLARIS) && defined(VBOX_USE_LIBHAL)
/* Solaris hosts, loading libhal at runtime */

/**
 * Helper function to query the hal subsystem for information about DVD drives attached to the
 * system.
 *
 * @returns true if information was successfully obtained, false otherwise
 * @retval  list drives found will be attached to this list
 */
bool Host::getDVDInfoFromHal(std::list <ComObjPtr <HostDVDDrive> > &list)
{
    bool halSuccess = false;
    DBusError dbusError;
    if (!gLibHalCheckPresence())
        return false;
    gDBusErrorInit (&dbusError);
    DBusConnection *dbusConnection = gDBusBusGet(DBUS_BUS_SYSTEM, &dbusError);
    if (dbusConnection != 0)
    {
        LibHalContext *halContext = gLibHalCtxNew();
        if (halContext != 0)
        {
            if (gLibHalCtxSetDBusConnection (halContext, dbusConnection))
            {
                if (gLibHalCtxInit(halContext, &dbusError))
                {
                    int numDevices;
                    char **halDevices = gLibHalFindDeviceStringMatch(halContext,
                                                "storage.drive_type", "cdrom",
                                                &numDevices, &dbusError);
                    if (halDevices != 0)
                    {
                        /* Hal is installed and working, so if no devices are reported, assume
                           that there are none. */
                        halSuccess = true;
                        for (int i = 0; i < numDevices; i++)
                        {
                            char *devNode = gLibHalDeviceGetPropertyString(halContext,
                                                    halDevices[i], "block.device", &dbusError);
#ifdef RT_OS_SOLARIS
                            /* The CD/DVD ioctls work only for raw device nodes. */
                            char *tmp = getfullrawname(devNode);
                            gLibHalFreeString(devNode);
                            devNode = tmp;
#endif
                            if (devNode != 0)
                            {
//                                if (validateDevice(devNode, true))
//                                {
                                    Utf8Str description;
                                    char *vendor, *product;
                                    /* We do not check the error here, as this field may
                                       not even exist. */
                                    vendor = gLibHalDeviceGetPropertyString(halContext,
                                                    halDevices[i], "info.vendor", 0);
                                    product = gLibHalDeviceGetPropertyString(halContext,
                                                    halDevices[i], "info.product", &dbusError);
                                    if ((product != 0 && product[0] != 0))
                                    {
                                        if ((vendor != 0) && (vendor[0] != 0))
                                        {
                                            description = Utf8StrFmt ("%s %s",
                                                                      vendor, product);
                                        }
                                        else
                                        {
                                            description = product;
                                        }
                                        ComObjPtr <HostDVDDrive> hostDVDDriveObj;
                                        hostDVDDriveObj.createObject();
                                        hostDVDDriveObj->init (Bstr (devNode),
                                                               Bstr (halDevices[i]),
                                                               Bstr (description));
                                        list.push_back (hostDVDDriveObj);
                                    }
                                    else
                                    {
                                        if (product == 0)
                                        {
                                            LogRel(("Host::COMGETTER(DVDDrives): failed to get property \"info.product\" for device %s.  dbus error: %s (%s)\n",
                                                    halDevices[i], dbusError.name, dbusError.message));
                                            gDBusErrorFree(&dbusError);
                                        }
                                        ComObjPtr <HostDVDDrive> hostDVDDriveObj;
                                        hostDVDDriveObj.createObject();
                                        hostDVDDriveObj->init (Bstr (devNode),
                                                               Bstr (halDevices[i]));
                                        list.push_back (hostDVDDriveObj);
                                    }
                                    if (vendor != 0)
                                    {
                                        gLibHalFreeString(vendor);
                                    }
                                    if (product != 0)
                                    {
                                        gLibHalFreeString(product);
                                    }
//                                }
//                                else
//                                {
//                                    LogRel(("Host::COMGETTER(DVDDrives): failed to validate the block device %s as a DVD drive\n"));
//                                }
#ifndef RT_OS_SOLARIS
                                gLibHalFreeString(devNode);
#else
                                free(devNode);
#endif
                            }
                            else
                            {
                                LogRel(("Host::COMGETTER(DVDDrives): failed to get property \"block.device\" for device %s.  dbus error: %s (%s)\n",
                                        halDevices[i], dbusError.name, dbusError.message));
                                gDBusErrorFree(&dbusError);
                            }
                        }
                        gLibHalFreeStringArray(halDevices);
                    }
                    else
                    {
                        LogRel(("Host::COMGETTER(DVDDrives): failed to get devices with capability \"storage.cdrom\".  dbus error: %s (%s)\n", dbusError.name, dbusError.message));
                        gDBusErrorFree(&dbusError);
                    }
                    if (!gLibHalCtxShutdown(halContext, &dbusError))  /* what now? */
                    {
                        LogRel(("Host::COMGETTER(DVDDrives): failed to shutdown the libhal context.  dbus error: %s (%s)\n", dbusError.name, dbusError.message));
                        gDBusErrorFree(&dbusError);
                    }
                }
                else
                {
                    LogRel(("Host::COMGETTER(DVDDrives): failed to initialise libhal context.  dbus error: %s (%s)\n", dbusError.name, dbusError.message));
                    gDBusErrorFree(&dbusError);
                }
                gLibHalCtxFree(halContext);
            }
            else
            {
                LogRel(("Host::COMGETTER(DVDDrives): failed to set libhal connection to dbus.\n"));
            }
        }
        else
        {
            LogRel(("Host::COMGETTER(DVDDrives): failed to get a libhal context - out of memory?\n"));
        }
        gDBusConnectionUnref(dbusConnection);
    }
    else
    {
        LogRel(("Host::COMGETTER(DVDDrives): failed to connect to dbus.  dbus error: %s (%s)\n", dbusError.name, dbusError.message));
        gDBusErrorFree(&dbusError);
    }
    return halSuccess;
}


/**
 * Helper function to query the hal subsystem for information about floppy drives attached to the
 * system.
 *
 * @returns true if information was successfully obtained, false otherwise
 * @retval  list drives found will be attached to this list
 */
bool Host::getFloppyInfoFromHal(std::list <ComObjPtr <HostFloppyDrive> > &list)
{
    bool halSuccess = false;
    DBusError dbusError;
    if (!gLibHalCheckPresence())
        return false;
    gDBusErrorInit (&dbusError);
    DBusConnection *dbusConnection = gDBusBusGet(DBUS_BUS_SYSTEM, &dbusError);
    if (dbusConnection != 0)
    {
        LibHalContext *halContext = gLibHalCtxNew();
        if (halContext != 0)
        {
            if (gLibHalCtxSetDBusConnection (halContext, dbusConnection))
            {
                if (gLibHalCtxInit(halContext, &dbusError))
                {
                    int numDevices;
                    char **halDevices = gLibHalFindDeviceStringMatch(halContext,
                                                "storage.drive_type", "floppy",
                                                &numDevices, &dbusError);
                    if (halDevices != 0)
                    {
                        /* Hal is installed and working, so if no devices are reported, assume
                           that there are none. */
                        halSuccess = true;
                        for (int i = 0; i < numDevices; i++)
                        {
                            char *driveType = gLibHalDeviceGetPropertyString(halContext,
                                                    halDevices[i], "storage.drive_type", 0);
                            if (driveType != 0)
                            {
                                if (strcmp(driveType, "floppy") != 0)
                                {
                                    gLibHalFreeString(driveType);
                                    continue;
                                }
                                gLibHalFreeString(driveType);
                            }
                            else
                            {
                                /* An error occurred.  The attribute "storage.drive_type"
                                   probably didn't exist. */
                                continue;
                            }
                            char *devNode = gLibHalDeviceGetPropertyString(halContext,
                                                    halDevices[i], "block.device", &dbusError);
                            if (devNode != 0)
                            {
//                                if (validateDevice(devNode, false))
//                                {
                                    Utf8Str description;
                                    char *vendor, *product;
                                    /* We do not check the error here, as this field may
                                       not even exist. */
                                    vendor = gLibHalDeviceGetPropertyString(halContext,
                                                    halDevices[i], "info.vendor", 0);
                                    product = gLibHalDeviceGetPropertyString(halContext,
                                                    halDevices[i], "info.product", &dbusError);
                                    if ((product != 0) && (product[0] != 0))
                                    {
                                        if ((vendor != 0) && (vendor[0] != 0))
                                        {
                                            description = Utf8StrFmt ("%s %s",
                                                                      vendor, product);
                                        }
                                        else
                                        {
                                            description = product;
                                        }
                                        ComObjPtr <HostFloppyDrive> hostFloppyDrive;
                                        hostFloppyDrive.createObject();
                                        hostFloppyDrive->init (Bstr (devNode),
                                                               Bstr (halDevices[i]),
                                                               Bstr (description));
                                        list.push_back (hostFloppyDrive);
                                    }
                                    else
                                    {
                                        if (product == 0)
                                        {
                                            LogRel(("Host::COMGETTER(FloppyDrives): failed to get property \"info.product\" for device %s.  dbus error: %s (%s)\n",
                                                    halDevices[i], dbusError.name, dbusError.message));
                                            gDBusErrorFree(&dbusError);
                                        }
                                        ComObjPtr <HostFloppyDrive> hostFloppyDrive;
                                        hostFloppyDrive.createObject();
                                        hostFloppyDrive->init (Bstr (devNode),
                                                               Bstr (halDevices[i]));
                                        list.push_back (hostFloppyDrive);
                                    }
                                    if (vendor != 0)
                                    {
                                        gLibHalFreeString(vendor);
                                    }
                                    if (product != 0)
                                    {
                                        gLibHalFreeString(product);
                                    }
//                                }
//                                else
//                                {
//                                    LogRel(("Host::COMGETTER(FloppyDrives): failed to validate the block device %s as a floppy drive\n"));
//                                }
                                gLibHalFreeString(devNode);
                            }
                            else
                            {
                                LogRel(("Host::COMGETTER(FloppyDrives): failed to get property \"block.device\" for device %s.  dbus error: %s (%s)\n",
                                        halDevices[i], dbusError.name, dbusError.message));
                                gDBusErrorFree(&dbusError);
                            }
                        }
                        gLibHalFreeStringArray(halDevices);
                    }
                    else
                    {
                        LogRel(("Host::COMGETTER(FloppyDrives): failed to get devices with capability \"storage.cdrom\".  dbus error: %s (%s)\n", dbusError.name, dbusError.message));
                        gDBusErrorFree(&dbusError);
                    }
                    if (!gLibHalCtxShutdown(halContext, &dbusError))  /* what now? */
                    {
                        LogRel(("Host::COMGETTER(FloppyDrives): failed to shutdown the libhal context.  dbus error: %s (%s)\n", dbusError.name, dbusError.message));
                        gDBusErrorFree(&dbusError);
                    }
                }
                else
                {
                    LogRel(("Host::COMGETTER(FloppyDrives): failed to initialise libhal context.  dbus error: %s (%s)\n", dbusError.name, dbusError.message));
                    gDBusErrorFree(&dbusError);
                }
                gLibHalCtxFree(halContext);
            }
            else
            {
                LogRel(("Host::COMGETTER(FloppyDrives): failed to set libhal connection to dbus.\n"));
            }
        }
        else
        {
            LogRel(("Host::COMGETTER(FloppyDrives): failed to get a libhal context - out of memory?\n"));
        }
        gDBusConnectionUnref(dbusConnection);
    }
    else
    {
        LogRel(("Host::COMGETTER(FloppyDrives): failed to connect to dbus.  dbus error: %s (%s)\n", dbusError.name, dbusError.message));
        gDBusErrorFree(&dbusError);
    }
    return halSuccess;
}
#endif  /* RT_OS_SOLARIS and VBOX_USE_HAL */

#if defined(RT_OS_SOLARIS)

/**
 * Helper function to parse the given mount file and add found entries
 */
void Host::parseMountTable(char *mountTable, std::list <ComObjPtr <HostDVDDrive> > &list)
{
#ifdef RT_OS_LINUX
    FILE *mtab = setmntent(mountTable, "r");
    if (mtab)
    {
        struct mntent *mntent;
        char *mnt_type;
        char *mnt_dev;
        char *tmp;
        while ((mntent = getmntent(mtab)))
        {
            mnt_type = (char*)malloc(strlen(mntent->mnt_type) + 1);
            mnt_dev = (char*)malloc(strlen(mntent->mnt_fsname) + 1);
            strcpy(mnt_type, mntent->mnt_type);
            strcpy(mnt_dev, mntent->mnt_fsname);
            // supermount fs case
            if (strcmp(mnt_type, "supermount") == 0)
            {
                tmp = strstr(mntent->mnt_opts, "fs=");
                if (tmp)
                {
                    free(mnt_type);
                    mnt_type = strdup(tmp + strlen("fs="));
                    if (mnt_type)
                    {
                        tmp = strchr(mnt_type, ',');
                        if (tmp)
                            *tmp = '\0';
                    }
                }
                tmp = strstr(mntent->mnt_opts, "dev=");
                if (tmp)
                {
                    free(mnt_dev);
                    mnt_dev = strdup(tmp + strlen("dev="));
                    if (mnt_dev)
                    {
                        tmp = strchr(mnt_dev, ',');
                        if (tmp)
                            *tmp = '\0';
                    }
                }
            }
            // use strstr here to cover things fs types like "udf,iso9660"
            if (strstr(mnt_type, "iso9660") == 0)
            {
                /** @todo check whether we've already got the drive in our list! */
                if (validateDevice(mnt_dev, true))
                {
                    ComObjPtr <HostDVDDrive> hostDVDDriveObj;
                    hostDVDDriveObj.createObject();
                    hostDVDDriveObj->init (Bstr (mnt_dev));
                    list.push_back (hostDVDDriveObj);
                }
            }
            free(mnt_dev);
            free(mnt_type);
        }
        endmntent(mtab);
    }
#else  // RT_OS_SOLARIS
    FILE *mntFile = fopen(mountTable, "r");
    if (mntFile)
    {
        struct mnttab mntTab;
        while (getmntent(mntFile, &mntTab) == 0)
        {
            char *mountName = strdup(mntTab.mnt_special);
            char *mountPoint = strdup(mntTab.mnt_mountp);
            char *mountFSType = strdup(mntTab.mnt_fstype);

            // skip devices we are not interested in
            if ((*mountName && mountName[0] == '/') &&                  // skip 'fake' devices (like -hosts, proc, fd, swap)
                (*mountFSType && (strcmp(mountFSType, "devfs") != 0 &&  // skip devfs (i.e. /devices)
                                  strcmp(mountFSType, "dev") != 0 &&    // skip dev (i.e. /dev)
                                  strcmp(mountFSType, "lofs") != 0)) && // skip loop-back file-system (lofs)
                (*mountPoint && strcmp(mountPoint, "/") != 0))          // skip point '/' (Can CD/DVD be mounted at '/' ???)
            {
                char *rawDevName = getfullrawname(mountName);
                if (validateDevice(rawDevName, true))
                {
                    ComObjPtr <HostDVDDrive> hostDVDDriveObj;
                    hostDVDDriveObj.createObject();
                    hostDVDDriveObj->init (Bstr (rawDevName));
                    list.push_back (hostDVDDriveObj);
                }
                free(rawDevName);
            }

            free(mountName);
            free(mountPoint);
            free(mountFSType);
        }

        fclose(mntFile);
    }
#endif
}

/**
 * Helper function to check whether the given device node is a valid drive
 */
bool Host::validateDevice(const char *deviceNode, bool isCDROM)
{
    struct stat statInfo;
    bool retValue = false;

    // sanity check
    if (!deviceNode)
    {
        return false;
    }

    // first a simple stat() call
    if (stat(deviceNode, &statInfo) < 0)
    {
        return false;
    } else
    {
        if (isCDROM)
        {
            if (S_ISCHR(statInfo.st_mode) || S_ISBLK(statInfo.st_mode))
            {
                int fileHandle;
                // now try to open the device
                fileHandle = open(deviceNode, O_RDONLY | O_NONBLOCK, 0);
                if (fileHandle >= 0)
                {
                    cdrom_subchnl cdChannelInfo;
                    cdChannelInfo.cdsc_format = CDROM_MSF;
                    // this call will finally reveal the whole truth
#ifdef RT_OS_LINUX
                    if ((ioctl(fileHandle, CDROMSUBCHNL, &cdChannelInfo) == 0) ||
                        (errno == EIO) || (errno == ENOENT) ||
                        (errno == EINVAL) || (errno == ENOMEDIUM))
#else
                    if ((ioctl(fileHandle, CDROMSUBCHNL, &cdChannelInfo) == 0) ||
                        (errno == EIO) || (errno == ENOENT) ||
                        (errno == EINVAL))
#endif
                    {
                        retValue = true;
                    }
                    close(fileHandle);
                }
            }
        } else
        {
            // floppy case
            if (S_ISCHR(statInfo.st_mode) || S_ISBLK(statInfo.st_mode))
            {
                /// @todo do some more testing, maybe a nice IOCTL!
                retValue = true;
            }
        }
    }
    return retValue;
}
#endif // RT_OS_SOLARIS

#ifdef VBOX_WITH_USB
/**
 *  Checks for the presense and status of the USB Proxy Service.
 *  Returns S_OK when the Proxy is present and OK, VBOX_E_HOST_ERROR (as a
 *  warning) if the proxy service is not available due to the way the host is
 *  configured (at present, that means that usbfs and hal/DBus are not
 *  available on a Linux host) or E_FAIL and a corresponding error message
 *  otherwise. Intended to be used by methods that rely on the Proxy Service
 *  availability.
 *
 *  @note This method may return a warning result code. It is recommended to use
 *        MultiError to store the return value.
 *
 *  @note Locks this object for reading.
 */
HRESULT Host::checkUSBProxyService()
{
    AutoWriteLock alock (this);
    CHECK_READY();

    AssertReturn (mUSBProxyService, E_FAIL);
    if (!mUSBProxyService->isActive())
    {
        /* disable the USB controller completely to avoid assertions if the
         * USB proxy service could not start. */

        if (mUSBProxyService->getLastError() == VERR_FILE_NOT_FOUND)
            return setWarning (E_FAIL,
                tr ("Could not load the Host USB Proxy Service (%Rrc). "
                    "The service might not be installed on the host computer"),
                mUSBProxyService->getLastError());
        if (mUSBProxyService->getLastError() == VINF_SUCCESS)
#ifdef RT_OS_LINUX
            return setWarning (VBOX_E_HOST_ERROR,
# ifdef VBOX_WITH_DBUS
                tr ("The USB Proxy Service could not be started, because neither the USB file system (usbfs) nor the hardware information service (hal) is available")
# else
                tr ("The USB Proxy Service could not be started, because the USB file system (usbfs) is not available")
# endif
                );
#else  /* !RT_OS_LINUX */
            return setWarning (E_FAIL,
                tr ("The USB Proxy Service has not yet been ported to this host"));
#endif /* !RT_OS_LINUX */
        return setWarning (E_FAIL,
            tr ("Could not load the Host USB Proxy service (%Rrc)"),
            mUSBProxyService->getLastError());
    }

    return S_OK;
}
#endif /* VBOX_WITH_USB */

#ifdef RT_OS_WINDOWS

/* The original source of the VBoxTAP adapter creation/destruction code has the following copyright */
/*
   Copyright 2004 by the Massachusetts Institute of Technology

   All rights reserved.

   Permission to use, copy, modify, and distribute this software and its
   documentation for any purpose and without fee is hereby granted,
   provided that the above copyright notice appear in all copies and that
   both that copyright notice and this permission notice appear in
   supporting documentation, and that the name of the Massachusetts
   Institute of Technology (M.I.T.) not be used in advertising or publicity
   pertaining to distribution of the software without specific, written
   prior permission.

   M.I.T. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
   ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
   M.I.T. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
   ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
   WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
   ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
   SOFTWARE.
*/


#define NETSHELL_LIBRARY _T("netshell.dll")

/**
 *  Use the IShellFolder API to rename the connection.
 */
static HRESULT rename_shellfolder (PCWSTR wGuid, PCWSTR wNewName)
{
    /* This is the GUID for the network connections folder. It is constant.
     * {7007ACC7-3202-11D1-AAD2-00805FC1270E} */
    const GUID CLSID_NetworkConnections = {
        0x7007ACC7, 0x3202, 0x11D1, {
            0xAA, 0xD2, 0x00, 0x80, 0x5F, 0xC1, 0x27, 0x0E
        }
    };

    LPITEMIDLIST pidl = NULL;
    IShellFolder *pShellFolder = NULL;
    HRESULT hr;

    /* Build the display name in the form "::{GUID}". */
    if (wcslen (wGuid) >= MAX_PATH)
        return E_INVALIDARG;
    WCHAR szAdapterGuid[MAX_PATH + 2] = {0};
    swprintf (szAdapterGuid, L"::%ls", wGuid);

    /* Create an instance of the network connections folder. */
    hr = CoCreateInstance (CLSID_NetworkConnections, NULL,
                           CLSCTX_INPROC_SERVER, IID_IShellFolder,
                           reinterpret_cast <LPVOID *> (&pShellFolder));
    /* Parse the display name. */
    if (SUCCEEDED (hr))
    {
        hr = pShellFolder->ParseDisplayName (NULL, NULL, szAdapterGuid, NULL,
                                             &pidl, NULL);
    }
    if (SUCCEEDED (hr))
    {
        hr = pShellFolder->SetNameOf (NULL, pidl, wNewName, SHGDN_NORMAL,
                                      &pidl);
    }

    CoTaskMemFree (pidl);

    if (pShellFolder)
        pShellFolder->Release();

    return hr;
}

extern "C" HRESULT RenameConnection (PCWSTR GuidString, PCWSTR NewName)
{
    typedef HRESULT (WINAPI *lpHrRenameConnection) (const GUID *, PCWSTR);
    lpHrRenameConnection RenameConnectionFunc = NULL;
    HRESULT status;

    /* First try the IShellFolder interface, which was unimplemented
     * for the network connections folder before XP. */
    status = rename_shellfolder (GuidString, NewName);
    if (status == E_NOTIMPL)
    {
/** @todo that code doesn't seem to work! */
        /* The IShellFolder interface is not implemented on this platform.
         * Try the (undocumented) HrRenameConnection API in the netshell
         * library. */
        CLSID clsid;
        HINSTANCE hNetShell;
        status = CLSIDFromString ((LPOLESTR) GuidString, &clsid);
        if (FAILED(status))
            return E_FAIL;
        hNetShell = LoadLibrary (NETSHELL_LIBRARY);
        if (hNetShell == NULL)
            return E_FAIL;
        RenameConnectionFunc =
          (lpHrRenameConnection) GetProcAddress (hNetShell,
                                                 "HrRenameConnection");
        if (RenameConnectionFunc == NULL)
        {
            FreeLibrary (hNetShell);
            return E_FAIL;
        }
        status = RenameConnectionFunc (&clsid, NewName);
        FreeLibrary (hNetShell);
    }
    if (FAILED (status))
        return status;

    return S_OK;
}

#define DRIVERHWID _T("vboxtap")

#define SetErrBreak(strAndArgs) \
    if (1) { \
        aErrMsg = Utf8StrFmt strAndArgs; vrc = VERR_GENERAL_FAILURE; break; \
    } else do {} while (0)

/* static */
int Host::createNetworkInterface (SVCHlpClient *aClient,
                                  const Utf8Str &aName,
                                  Guid &aGUID, Utf8Str &aErrMsg)
{
    LogFlowFuncEnter();
    LogFlowFunc (("Network connection name = '%s'\n", aName.raw()));

    AssertReturn (aClient, VERR_INVALID_POINTER);
    AssertReturn (!aName.isNull(), VERR_INVALID_PARAMETER);

    int vrc = VINF_SUCCESS;

    HDEVINFO hDeviceInfo = INVALID_HANDLE_VALUE;
    SP_DEVINFO_DATA DeviceInfoData;
    DWORD ret = 0;
    BOOL found = FALSE;
    BOOL registered = FALSE;
    BOOL destroyList = FALSE;
    TCHAR pCfgGuidString [50];

    do
    {
        BOOL ok;
        GUID netGuid;
        SP_DRVINFO_DATA DriverInfoData;
        SP_DEVINSTALL_PARAMS  DeviceInstallParams;
        TCHAR className [MAX_PATH];
        DWORD index = 0;
        PSP_DRVINFO_DETAIL_DATA pDriverInfoDetail;
        /* for our purposes, 2k buffer is more
         * than enough to obtain the hardware ID
         * of the VBoxTAP driver. */
        DWORD detailBuf [2048];

        HKEY hkey = NULL;
        DWORD cbSize;
        DWORD dwValueType;

        /* initialize the structure size */
        DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
        DriverInfoData.cbSize = sizeof(SP_DRVINFO_DATA);

        /* copy the net class GUID */
        memcpy(&netGuid, &GUID_DEVCLASS_NET, sizeof(GUID_DEVCLASS_NET));

        /* create an empty device info set associated with the net class GUID */
        hDeviceInfo = SetupDiCreateDeviceInfoList (&netGuid, NULL);
        if (hDeviceInfo == INVALID_HANDLE_VALUE)
            SetErrBreak (("SetupDiCreateDeviceInfoList failed (0x%08X)",
                          GetLastError()));

        /* get the class name from GUID */
        ok = SetupDiClassNameFromGuid (&netGuid, className, MAX_PATH, NULL);
        if (!ok)
            SetErrBreak (("SetupDiClassNameFromGuid failed (0x%08X)",
                          GetLastError()));

        /* create a device info element and add the new device instance
         * key to registry */
        ok = SetupDiCreateDeviceInfo (hDeviceInfo, className, &netGuid, NULL, NULL,
                                     DICD_GENERATE_ID, &DeviceInfoData);
        if (!ok)
            SetErrBreak (("SetupDiCreateDeviceInfo failed (0x%08X)",
                          GetLastError()));

        /* select the newly created device info to be the currently
           selected member */
        ok = SetupDiSetSelectedDevice (hDeviceInfo, &DeviceInfoData);
        if (!ok)
            SetErrBreak (("SetupDiSetSelectedDevice failed (0x%08X)",
                          GetLastError()));

        /* build a list of class drivers */
        ok = SetupDiBuildDriverInfoList (hDeviceInfo, &DeviceInfoData,
                                        SPDIT_CLASSDRIVER);
        if (!ok)
            SetErrBreak (("SetupDiBuildDriverInfoList failed (0x%08X)",
                          GetLastError()));

        destroyList = TRUE;

        /* enumerate the driver info list */
        while (TRUE)
        {
            BOOL ret;

            ret = SetupDiEnumDriverInfo (hDeviceInfo, &DeviceInfoData,
                                         SPDIT_CLASSDRIVER, index, &DriverInfoData);

            /* if the function failed and GetLastError() returned
             * ERROR_NO_MORE_ITEMS, then we have reached the end of the
             * list.  Othewise there was something wrong with this
             * particular driver. */
            if (!ret)
            {
                if(GetLastError() == ERROR_NO_MORE_ITEMS)
                    break;
                else
                {
                    index++;
                    continue;
                }
            }

            pDriverInfoDetail = (PSP_DRVINFO_DETAIL_DATA) detailBuf;
            pDriverInfoDetail->cbSize = sizeof(SP_DRVINFO_DETAIL_DATA);

            /* if we successfully find the hardware ID and it turns out to
             * be the one for the loopback driver, then we are done. */
            if (SetupDiGetDriverInfoDetail (hDeviceInfo,
                                            &DeviceInfoData,
                                            &DriverInfoData,
                                            pDriverInfoDetail,
                                            sizeof (detailBuf),
                                            NULL))
            {
                TCHAR * t;

                /* pDriverInfoDetail->HardwareID is a MULTISZ string.  Go through the
                 * whole list and see if there is a match somewhere. */
                t = pDriverInfoDetail->HardwareID;
                while (t && *t && t < (TCHAR *) &detailBuf [sizeof(detailBuf) / sizeof (detailBuf[0])])
                {
                    if (!_tcsicmp(t, DRIVERHWID))
                        break;

                    t += _tcslen(t) + 1;
                }

                if (t && *t && t < (TCHAR *) &detailBuf [sizeof(detailBuf) / sizeof (detailBuf[0])])
                {
                    found = TRUE;
                    break;
                }
            }

            index ++;
        }

        if (!found)
            SetErrBreak ((tr ("Could not find Host Interface Networking driver! "
                              "Please reinstall")));

        /* set the loopback driver to be the currently selected */
        ok = SetupDiSetSelectedDriver (hDeviceInfo, &DeviceInfoData,
                                       &DriverInfoData);
        if (!ok)
            SetErrBreak (("SetupDiSetSelectedDriver failed (0x%08X)",
                          GetLastError()));

        /* register the phantom device to prepare for install */
        ok = SetupDiCallClassInstaller (DIF_REGISTERDEVICE, hDeviceInfo,
                                        &DeviceInfoData);
        if (!ok)
            SetErrBreak (("SetupDiCallClassInstaller failed (0x%08X)",
                          GetLastError()));

        /* registered, but remove if errors occur in the following code */
        registered = TRUE;

        /* ask the installer if we can install the device */
        ok = SetupDiCallClassInstaller (DIF_ALLOW_INSTALL, hDeviceInfo,
                                        &DeviceInfoData);
        if (!ok)
        {
            if (GetLastError() != ERROR_DI_DO_DEFAULT)
                SetErrBreak (("SetupDiCallClassInstaller (DIF_ALLOW_INSTALL) failed (0x%08X)",
                              GetLastError()));
            /* that's fine */
        }

        /* install the files first */
        ok = SetupDiCallClassInstaller (DIF_INSTALLDEVICEFILES, hDeviceInfo,
                                        &DeviceInfoData);
        if (!ok)
            SetErrBreak (("SetupDiCallClassInstaller (DIF_INSTALLDEVICEFILES) failed (0x%08X)",
                          GetLastError()));

        /* get the device install parameters and disable filecopy */
        DeviceInstallParams.cbSize = sizeof(SP_DEVINSTALL_PARAMS);
        ok = SetupDiGetDeviceInstallParams (hDeviceInfo, &DeviceInfoData,
                                            &DeviceInstallParams);
        if (ok)
        {
            DeviceInstallParams.Flags |= DI_NOFILECOPY;
            ok = SetupDiSetDeviceInstallParams (hDeviceInfo, &DeviceInfoData,
                                                &DeviceInstallParams);
            if (!ok)
                SetErrBreak (("SetupDiSetDeviceInstallParams failed (0x%08X)",
                              GetLastError()));
        }

        /*
         * Register any device-specific co-installers for this device,
         */

        ok = SetupDiCallClassInstaller (DIF_REGISTER_COINSTALLERS,
                                        hDeviceInfo,
                                        &DeviceInfoData);
        if (!ok)
            SetErrBreak (("SetupDiCallClassInstaller (DIF_REGISTER_COINSTALLERS) failed (0x%08X)",
                          GetLastError()));

        /*
         * install any  installer-specified interfaces.
         * and then do the real install
         */
        ok = SetupDiCallClassInstaller (DIF_INSTALLINTERFACES,
                                        hDeviceInfo,
                                        &DeviceInfoData);
        if (!ok)
            SetErrBreak (("SetupDiCallClassInstaller (DIF_INSTALLINTERFACES) failed (0x%08X)",
                          GetLastError()));

        ok = SetupDiCallClassInstaller (DIF_INSTALLDEVICE,
                                        hDeviceInfo,
                                        &DeviceInfoData);
        if (!ok)
            SetErrBreak (("SetupDiCallClassInstaller (DIF_INSTALLDEVICE) failed (0x%08X)",
                          GetLastError()));

        /* Figure out NetCfgInstanceId */
        hkey = SetupDiOpenDevRegKey (hDeviceInfo,
                                     &DeviceInfoData,
                                     DICS_FLAG_GLOBAL,
                                     0,
                                     DIREG_DRV,
                                     KEY_READ);
        if (hkey == INVALID_HANDLE_VALUE)
            SetErrBreak (("SetupDiOpenDevRegKey failed (0x%08X)",
                          GetLastError()));

        cbSize = sizeof (pCfgGuidString);
        DWORD ret;
        ret = RegQueryValueEx (hkey, _T ("NetCfgInstanceId"), NULL,
                               &dwValueType, (LPBYTE) pCfgGuidString, &cbSize);
        RegCloseKey (hkey);

        ret = RenameConnection (pCfgGuidString, Bstr (aName));
        if (FAILED (ret))
            SetErrBreak (("Failed to set interface name (ret=0x%08X, "
                          "pCfgGuidString='%ls', cbSize=%d)",
                           ret, pCfgGuidString, cbSize));
    }
    while (0);

    /*
     * cleanup
     */

    if (hDeviceInfo != INVALID_HANDLE_VALUE)
    {
        /* an error has occured, but the device is registered, we must remove it */
        if (ret != 0 && registered)
            SetupDiCallClassInstaller (DIF_REMOVE, hDeviceInfo, &DeviceInfoData);

        found = SetupDiDeleteDeviceInfo (hDeviceInfo, &DeviceInfoData);

        /* destroy the driver info list */
        if (destroyList)
            SetupDiDestroyDriverInfoList (hDeviceInfo, &DeviceInfoData,
                                          SPDIT_CLASSDRIVER);
        /* clean up the device info set */
        SetupDiDestroyDeviceInfoList (hDeviceInfo);
    }

    /* return the network connection GUID on success */
    if (RT_SUCCESS (vrc))
    {
        /* remove the curly bracket at the end */
        pCfgGuidString [_tcslen (pCfgGuidString) - 1] = '\0';
        LogFlowFunc (("Network connection GUID string = {%ls}\n", pCfgGuidString + 1));

        aGUID = Guid (Utf8Str (pCfgGuidString + 1));
        LogFlowFunc (("Network connection GUID = {%RTuuid}\n", aGUID.raw()));
        Assert (!aGUID.isEmpty());
    }

    LogFlowFunc (("vrc=%Rrc\n", vrc));
    LogFlowFuncLeave();
    return vrc;
}

/* static */
int Host::removeNetworkInterface (SVCHlpClient *aClient,
                                  const Guid &aGUID,
                                  Utf8Str &aErrMsg)
{
    LogFlowFuncEnter();
    LogFlowFunc (("Network connection GUID = {%RTuuid}\n", aGUID.raw()));

    AssertReturn (aClient, VERR_INVALID_POINTER);
    AssertReturn (!aGUID.isEmpty(), VERR_INVALID_PARAMETER);

    int vrc = VINF_SUCCESS;

    do
    {
        TCHAR lszPnPInstanceId [512] = {0};

        /* We have to find the device instance ID through a registry search */

        HKEY hkeyNetwork = 0;
        HKEY hkeyConnection = 0;

        do
        {
            char strRegLocation [256];
            sprintf (strRegLocation,
                     "SYSTEM\\CurrentControlSet\\Control\\Network\\"
                     "{4D36E972-E325-11CE-BFC1-08002BE10318}\\{%s}",
                     aGUID.toString().raw());
            LONG status;
            status = RegOpenKeyExA (HKEY_LOCAL_MACHINE, strRegLocation, 0,
                                    KEY_READ, &hkeyNetwork);
            if ((status != ERROR_SUCCESS) || !hkeyNetwork)
                SetErrBreak ((
                    tr ("Host interface network is not found in registry (%s) [1]"),
                    strRegLocation));

            status = RegOpenKeyExA (hkeyNetwork, "Connection", 0,
                                    KEY_READ, &hkeyConnection);
            if ((status != ERROR_SUCCESS) || !hkeyConnection)
                SetErrBreak ((
                    tr ("Host interface network is not found in registry (%s) [2]"),
                    strRegLocation));

            DWORD len = sizeof (lszPnPInstanceId);
            DWORD dwKeyType;
            status = RegQueryValueExW (hkeyConnection, L"PnPInstanceID", NULL,
                                       &dwKeyType, (LPBYTE) lszPnPInstanceId, &len);
            if ((status != ERROR_SUCCESS) || (dwKeyType != REG_SZ))
                SetErrBreak ((
                    tr ("Host interface network is not found in registry (%s) [3]"),
                    strRegLocation));
        }
        while (0);

        if (hkeyConnection)
            RegCloseKey (hkeyConnection);
        if (hkeyNetwork)
            RegCloseKey (hkeyNetwork);

        if (RT_FAILURE (vrc))
            break;

        /*
         * Now we are going to enumerate all network devices and
         * wait until we encounter the right device instance ID
         */

        HDEVINFO hDeviceInfo = INVALID_HANDLE_VALUE;

        do
        {
            BOOL ok;
            DWORD ret = 0;
            GUID netGuid;
            SP_DEVINFO_DATA DeviceInfoData;
            DWORD index = 0;
            BOOL found = FALSE;
            DWORD size = 0;

            /* initialize the structure size */
            DeviceInfoData.cbSize = sizeof (SP_DEVINFO_DATA);

            /* copy the net class GUID */
            memcpy (&netGuid, &GUID_DEVCLASS_NET, sizeof (GUID_DEVCLASS_NET));

            /* return a device info set contains all installed devices of the Net class */
            hDeviceInfo = SetupDiGetClassDevs (&netGuid, NULL, NULL, DIGCF_PRESENT);

            if (hDeviceInfo == INVALID_HANDLE_VALUE)
                SetErrBreak (("SetupDiGetClassDevs failed (0x%08X)", GetLastError()));

            /* enumerate the driver info list */
            while (TRUE)
            {
                TCHAR *deviceHwid;

                ok = SetupDiEnumDeviceInfo (hDeviceInfo, index, &DeviceInfoData);

                if (!ok)
                {
                    if (GetLastError() == ERROR_NO_MORE_ITEMS)
                        break;
                    else
                    {
                        index++;
                        continue;
                    }
                }

                /* try to get the hardware ID registry property */
                ok = SetupDiGetDeviceRegistryProperty (hDeviceInfo,
                                                       &DeviceInfoData,
                                                       SPDRP_HARDWAREID,
                                                       NULL,
                                                       NULL,
                                                       0,
                                                       &size);
                if (!ok)
                {
                    if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
                    {
                        index++;
                        continue;
                    }

                    deviceHwid = (TCHAR *) malloc (size);
                    ok = SetupDiGetDeviceRegistryProperty (hDeviceInfo,
                                                           &DeviceInfoData,
                                                           SPDRP_HARDWAREID,
                                                           NULL,
                                                           (PBYTE)deviceHwid,
                                                           size,
                                                           NULL);
                    if (!ok)
                    {
                        free (deviceHwid);
                        deviceHwid = NULL;
                        index++;
                        continue;
                    }
                }
                else
                {
                    /* something is wrong.  This shouldn't have worked with a NULL buffer */
                    index++;
                    continue;
                }

                for (TCHAR *t = deviceHwid;
                     t && *t && t < &deviceHwid[size / sizeof(TCHAR)];
                     t += _tcslen (t) + 1)
                {
                    if (!_tcsicmp (DRIVERHWID, t))
                    {
                          /* get the device instance ID */
                          TCHAR devID [MAX_DEVICE_ID_LEN];
                          if (CM_Get_Device_ID(DeviceInfoData.DevInst,
                                               devID, MAX_DEVICE_ID_LEN, 0) == CR_SUCCESS)
                          {
                              /* compare to what we determined before */
                              if (wcscmp(devID, lszPnPInstanceId) == 0)
                              {
                                  found = TRUE;
                                  break;
                              }
                          }
                    }
                }

                if (deviceHwid)
                {
                    free (deviceHwid);
                    deviceHwid = NULL;
                }

                if (found)
                    break;

                index++;
            }

            if (found == FALSE)
                SetErrBreak ((tr ("Host Interface Network driver not found (0x%08X)"),
                              GetLastError()));

            ok = SetupDiSetSelectedDevice (hDeviceInfo, &DeviceInfoData);
            if (!ok)
                SetErrBreak (("SetupDiSetSelectedDevice failed (0x%08X)",
                              GetLastError()));

            ok = SetupDiCallClassInstaller (DIF_REMOVE, hDeviceInfo, &DeviceInfoData);
            if (!ok)
                SetErrBreak (("SetupDiCallClassInstaller (DIF_REMOVE) failed (0x%08X)",
                              GetLastError()));
        }
        while (0);

        /* clean up the device info set */
        if (hDeviceInfo != INVALID_HANDLE_VALUE)
            SetupDiDestroyDeviceInfoList (hDeviceInfo);

        if (RT_FAILURE (vrc))
            break;
    }
    while (0);

    LogFlowFunc (("vrc=%Rrc\n", vrc));
    LogFlowFuncLeave();
    return vrc;
}

#undef SetErrBreak

/* static */
HRESULT Host::networkInterfaceHelperClient (SVCHlpClient *aClient,
                                            Progress *aProgress,
                                            void *aUser, int *aVrc)
{
    LogFlowFuncEnter();
    LogFlowFunc (("aClient={%p}, aProgress={%p}, aUser={%p}\n",
                  aClient, aProgress, aUser));

    AssertReturn ((aClient == NULL && aProgress == NULL && aVrc == NULL) ||
                  (aClient != NULL && aProgress != NULL && aVrc != NULL),
                  E_POINTER);
    AssertReturn (aUser, E_POINTER);

    std::auto_ptr <NetworkInterfaceHelperClientData>
        d (static_cast <NetworkInterfaceHelperClientData *> (aUser));

    if (aClient == NULL)
    {
        /* "cleanup only" mode, just return (it will free aUser) */
        return S_OK;
    }

    HRESULT rc = S_OK;
    int vrc = VINF_SUCCESS;

    switch (d->msgCode)
    {
        case SVCHlpMsg::CreateHostNetworkInterface:
        {
            LogFlowFunc (("CreateHostNetworkInterface:\n"));
            LogFlowFunc (("Network connection name = '%ls'\n", d->name.raw()));

            /* write message and parameters */
            vrc = aClient->write (d->msgCode);
            if (RT_FAILURE (vrc)) break;
            vrc = aClient->write (Utf8Str (d->name));
            if (RT_FAILURE (vrc)) break;

            /* wait for a reply */
            bool endLoop = false;
            while (!endLoop)
            {
                SVCHlpMsg::Code reply = SVCHlpMsg::Null;

                vrc = aClient->read (reply);
                if (RT_FAILURE (vrc)) break;

                switch (reply)
                {
                    case SVCHlpMsg::CreateHostNetworkInterface_OK:
                    {
                        /* read the GUID */
                        Guid guid;
                        vrc = aClient->read (guid);
                        if (RT_FAILURE (vrc)) break;

                        LogFlowFunc (("Network connection GUID = {%RTuuid}\n", guid.raw()));

                        /* initialize the object returned to the caller by
                         * CreateHostNetworkInterface() */
                        rc = d->iface->init (d->name, guid);
                        endLoop = true;
                        break;
                    }
                    case SVCHlpMsg::Error:
                    {
                        /* read the error message */
                        Utf8Str errMsg;
                        vrc = aClient->read (errMsg);
                        if (RT_FAILURE (vrc)) break;

                        rc = setError (E_FAIL, errMsg);
                        endLoop = true;
                        break;
                    }
                    default:
                    {
                        endLoop = true;
                        ComAssertMsgFailedBreak ((
                            "Invalid message code %d (%08lX)\n",
                            reply, reply),
                            rc = E_FAIL);
                    }
                }
            }

            break;
        }
        case SVCHlpMsg::RemoveHostNetworkInterface:
        {
            LogFlowFunc (("RemoveHostNetworkInterface:\n"));
            LogFlowFunc (("Network connection GUID = {%RTuuid}\n", d->guid.raw()));

            /* write message and parameters */
            vrc = aClient->write (d->msgCode);
            if (RT_FAILURE (vrc)) break;
            vrc = aClient->write (d->guid);
            if (RT_FAILURE (vrc)) break;

            /* wait for a reply */
            bool endLoop = false;
            while (!endLoop)
            {
                SVCHlpMsg::Code reply = SVCHlpMsg::Null;

                vrc = aClient->read (reply);
                if (RT_FAILURE (vrc)) break;

                switch (reply)
                {
                    case SVCHlpMsg::OK:
                    {
                        /* no parameters */
                        rc = S_OK;
                        endLoop = true;
                        break;
                    }
                    case SVCHlpMsg::Error:
                    {
                        /* read the error message */
                        Utf8Str errMsg;
                        vrc = aClient->read (errMsg);
                        if (RT_FAILURE (vrc)) break;

                        rc = setError (E_FAIL, errMsg);
                        endLoop = true;
                        break;
                    }
                    default:
                    {
                        endLoop = true;
                        ComAssertMsgFailedBreak ((
                            "Invalid message code %d (%08lX)\n",
                            reply, reply),
                            rc = E_FAIL);
                    }
                }
            }

            break;
        }
        default:
            ComAssertMsgFailedBreak ((
                "Invalid message code %d (%08lX)\n",
                d->msgCode, d->msgCode),
                rc = E_FAIL);
    }

    if (aVrc)
        *aVrc = vrc;

    LogFlowFunc (("rc=0x%08X, vrc=%Rrc\n", rc, vrc));
    LogFlowFuncLeave();
    return rc;
}

/* static */
int Host::networkInterfaceHelperServer (SVCHlpClient *aClient,
                                        SVCHlpMsg::Code aMsgCode)
{
    LogFlowFuncEnter();
    LogFlowFunc (("aClient={%p}, aMsgCode=%d\n", aClient, aMsgCode));

    AssertReturn (aClient, VERR_INVALID_POINTER);

    int vrc = VINF_SUCCESS;

    switch (aMsgCode)
    {
        case SVCHlpMsg::CreateHostNetworkInterface:
        {
            LogFlowFunc (("CreateHostNetworkInterface:\n"));

            Utf8Str name;
            vrc = aClient->read (name);
            if (RT_FAILURE (vrc)) break;

            Guid guid;
            Utf8Str errMsg;
            vrc = createNetworkInterface (aClient, name, guid, errMsg);

            if (RT_SUCCESS (vrc))
            {
                /* write success followed by GUID */
                vrc = aClient->write (SVCHlpMsg::CreateHostNetworkInterface_OK);
                if (RT_FAILURE (vrc)) break;
                vrc = aClient->write (guid);
                if (RT_FAILURE (vrc)) break;
            }
            else
            {
                /* write failure followed by error message */
                if (errMsg.isEmpty())
                    errMsg = Utf8StrFmt ("Unspecified error (%Rrc)", vrc);
                vrc = aClient->write (SVCHlpMsg::Error);
                if (RT_FAILURE (vrc)) break;
                vrc = aClient->write (errMsg);
                if (RT_FAILURE (vrc)) break;
            }

            break;
        }
        case SVCHlpMsg::RemoveHostNetworkInterface:
        {
            LogFlowFunc (("RemoveHostNetworkInterface:\n"));

            Guid guid;
            vrc = aClient->read (guid);
            if (RT_FAILURE (vrc)) break;

            Utf8Str errMsg;
            vrc = removeNetworkInterface (aClient, guid, errMsg);

            if (RT_SUCCESS (vrc))
            {
                /* write parameter-less success */
                vrc = aClient->write (SVCHlpMsg::OK);
                if (RT_FAILURE (vrc)) break;
            }
            else
            {
                /* write failure followed by error message */
                if (errMsg.isEmpty())
                    errMsg = Utf8StrFmt ("Unspecified error (%Rrc)", vrc);
                vrc = aClient->write (SVCHlpMsg::Error);
                if (RT_FAILURE (vrc)) break;
                vrc = aClient->write (errMsg);
                if (RT_FAILURE (vrc)) break;
            }

            break;
        }
        default:
            AssertMsgFailedBreakStmt (
                ("Invalid message code %d (%08lX)\n", aMsgCode, aMsgCode),
                VERR_GENERAL_FAILURE);
    }

    LogFlowFunc (("vrc=%Rrc\n", vrc));
    LogFlowFuncLeave();
    return vrc;
}

#endif /* RT_OS_WINDOWS */

#ifdef VBOX_WITH_RESOURCE_USAGE_API
void Host::registerMetrics (PerformanceCollector *aCollector)
{
    pm::CollectorHAL *hal = aCollector->getHAL();
    /* Create sub metrics */
    pm::SubMetric *cpuLoadUser   = new pm::SubMetric ("CPU/Load/User",
        "Percentage of processor time spent in user mode.");
    pm::SubMetric *cpuLoadKernel = new pm::SubMetric ("CPU/Load/Kernel",
        "Percentage of processor time spent in kernel mode.");
    pm::SubMetric *cpuLoadIdle   = new pm::SubMetric ("CPU/Load/Idle",
        "Percentage of processor time spent idling.");
    pm::SubMetric *cpuMhzSM      = new pm::SubMetric ("CPU/MHz",
        "Average of current frequency of all processors.");
    pm::SubMetric *ramUsageTotal = new pm::SubMetric ("RAM/Usage/Total",
        "Total physical memory installed.");
    pm::SubMetric *ramUsageUsed  = new pm::SubMetric ("RAM/Usage/Used",
        "Physical memory currently occupied.");
    pm::SubMetric *ramUsageFree  = new pm::SubMetric ("RAM/Usage/Free",
        "Physical memory currently available to applications.");
    /* Create and register base metrics */
    IUnknown *objptr;
    ComObjPtr <Host> tmp = this;
    tmp.queryInterfaceTo (&objptr);
    pm::BaseMetric *cpuLoad = new pm::HostCpuLoadRaw (hal, objptr, cpuLoadUser, cpuLoadKernel,
                                          cpuLoadIdle);
    aCollector->registerBaseMetric (cpuLoad);
    pm::BaseMetric *cpuMhz = new pm::HostCpuMhz (hal, objptr, cpuMhzSM);
    aCollector->registerBaseMetric (cpuMhz);
    pm::BaseMetric *ramUsage = new pm::HostRamUsage (hal, objptr, ramUsageTotal, ramUsageUsed,
                                           ramUsageFree);
    aCollector->registerBaseMetric (ramUsage);

    aCollector->registerMetric (new pm::Metric(cpuLoad, cpuLoadUser, 0));
    aCollector->registerMetric (new pm::Metric(cpuLoad, cpuLoadUser,
                                               new pm::AggregateAvg()));
    aCollector->registerMetric (new pm::Metric(cpuLoad, cpuLoadUser,
                                               new pm::AggregateMin()));
    aCollector->registerMetric (new pm::Metric(cpuLoad, cpuLoadUser,
                                               new pm::AggregateMax()));

    aCollector->registerMetric (new pm::Metric(cpuLoad, cpuLoadKernel, 0));
    aCollector->registerMetric (new pm::Metric(cpuLoad, cpuLoadKernel,
                                               new pm::AggregateAvg()));
    aCollector->registerMetric (new pm::Metric(cpuLoad, cpuLoadKernel,
                                               new pm::AggregateMin()));
    aCollector->registerMetric (new pm::Metric(cpuLoad, cpuLoadKernel,
                                               new pm::AggregateMax()));

    aCollector->registerMetric (new pm::Metric(cpuLoad, cpuLoadIdle, 0));
    aCollector->registerMetric (new pm::Metric(cpuLoad, cpuLoadIdle,
                                               new pm::AggregateAvg()));
    aCollector->registerMetric (new pm::Metric(cpuLoad, cpuLoadIdle,
                                               new pm::AggregateMin()));
    aCollector->registerMetric (new pm::Metric(cpuLoad, cpuLoadIdle,
                                               new pm::AggregateMax()));

    aCollector->registerMetric (new pm::Metric(cpuMhz, cpuMhzSM, 0));
    aCollector->registerMetric (new pm::Metric(cpuMhz, cpuMhzSM,
                                               new pm::AggregateAvg()));
    aCollector->registerMetric (new pm::Metric(cpuMhz, cpuMhzSM,
                                               new pm::AggregateMin()));
    aCollector->registerMetric (new pm::Metric(cpuMhz, cpuMhzSM,
                                               new pm::AggregateMax()));

    aCollector->registerMetric (new pm::Metric(ramUsage, ramUsageTotal, 0));
    aCollector->registerMetric (new pm::Metric(ramUsage, ramUsageTotal,
                                               new pm::AggregateAvg()));
    aCollector->registerMetric (new pm::Metric(ramUsage, ramUsageTotal,
                                               new pm::AggregateMin()));
    aCollector->registerMetric (new pm::Metric(ramUsage, ramUsageTotal,
                                               new pm::AggregateMax()));

    aCollector->registerMetric (new pm::Metric(ramUsage, ramUsageUsed, 0));
    aCollector->registerMetric (new pm::Metric(ramUsage, ramUsageUsed,
                                               new pm::AggregateAvg()));
    aCollector->registerMetric (new pm::Metric(ramUsage, ramUsageUsed,
                                               new pm::AggregateMin()));
    aCollector->registerMetric (new pm::Metric(ramUsage, ramUsageUsed,
                                               new pm::AggregateMax()));

    aCollector->registerMetric (new pm::Metric(ramUsage, ramUsageFree, 0));
    aCollector->registerMetric (new pm::Metric(ramUsage, ramUsageFree,
                                               new pm::AggregateAvg()));
    aCollector->registerMetric (new pm::Metric(ramUsage, ramUsageFree,
                                               new pm::AggregateMin()));
    aCollector->registerMetric (new pm::Metric(ramUsage, ramUsageFree,
                                               new pm::AggregateMax()));
};

void Host::unregisterMetrics (PerformanceCollector *aCollector)
{
    aCollector->unregisterMetricsFor (this);
    aCollector->unregisterBaseMetricsFor (this);
};
#endif /* VBOX_WITH_RESOURCE_USAGE_API */

STDMETHODIMP Host::FindHostNetworkInterfaceByName(IN_BSTR name, IHostNetworkInterface **networkInterface)
{
#ifndef VBOX_WITH_HOSTNETIF_API
    return E_NOTIMPL;
#else
    if (!name)
        return E_INVALIDARG;
    if (!networkInterface)
        return E_POINTER;

    *networkInterface = NULL;
    ComObjPtr <HostNetworkInterface> found;
    std::list <ComObjPtr <HostNetworkInterface> > list;
    int rc = NetIfList(list);
    if (RT_FAILURE(rc))
    {
        Log(("Failed to get host network interface list with rc=%Vrc\n", rc));
        return E_FAIL;
    }
    std::list <ComObjPtr <HostNetworkInterface> >::iterator it;
    for (it = list.begin(); it != list.end(); ++it)
    {
        Bstr n;
        (*it)->COMGETTER(Name) (n.asOutParam());
        if (n == name)
            found = *it;
    }

    if (!found)
        return setError (E_INVALIDARG, HostNetworkInterface::tr (
                             "The host network interface with the given name could not be found"));

    return found.queryInterfaceTo (networkInterface);
#endif
}

STDMETHODIMP Host::FindHostNetworkInterfaceById(IN_GUID id, IHostNetworkInterface **networkInterface)
{
#ifndef VBOX_WITH_HOSTNETIF_API
    return E_NOTIMPL;
#else
    if (Guid(id).isEmpty())
        return E_INVALIDARG;
    if (!networkInterface)
        return E_POINTER;

    *networkInterface = NULL;
    ComObjPtr <HostNetworkInterface> found;
    std::list <ComObjPtr <HostNetworkInterface> > list;
    int rc = NetIfList(list);
    if (RT_FAILURE(rc))
    {
        Log(("Failed to get host network interface list with rc=%Vrc\n", rc));
        return E_FAIL;
    }
    std::list <ComObjPtr <HostNetworkInterface> >::iterator it;
    for (it = list.begin(); it != list.end(); ++it)
    {
        Guid g;
        (*it)->COMGETTER(Id) (g.asOutParam());
        if (g == Guid(id))
            found = *it;
    }

    if (!found)
        return setError (E_INVALIDARG, HostNetworkInterface::tr (
                             "The host network interface with the given GUID could not be found"));

    return found.queryInterfaceTo (networkInterface);
#endif
}

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