/* $Id: VirtualBoxImpl.h 65088 2017-01-03 20:52:49Z vboxsync $ */
/** @file
 * VirtualBox COM class implementation
 */

/*
 * Copyright (C) 2006-2016 Oracle Corporation
 *
 * This file is part of VirtualBox Open Source Edition (OSE), as
 * available from http://www.virtualbox.org. This file is free software;
 * you can redistribute it and/or modify it under the terms of the GNU
 * General Public License (GPL) as published by the Free Software
 * Foundation, in version 2 as it comes in the "COPYING" file of the
 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
 */

#ifndef ____H_VIRTUALBOXIMPL
#define ____H_VIRTUALBOXIMPL

#include "VirtualBoxBase.h"
#include "objectslist.h"
#include "VirtualBoxWrap.h"

#ifdef RT_OS_WINDOWS
# include "win/resource.h"
#endif

namespace com
{
    class Event;
    class EventQueue;
}

class SessionMachine;
class GuestOSType;
class Progress;
class Host;
class SystemProperties;
class DHCPServer;
class PerformanceCollector;
#ifdef VBOX_WITH_EXTPACK
class ExtPackManager;
#endif
class AutostartDb;
class NATNetwork;


typedef std::list<ComObjPtr<SessionMachine> > SessionMachinesList;

#ifdef RT_OS_WINDOWS
class SVCHlpClient;
#endif

namespace settings
{
    class MainConfigFile;
    struct MediaRegistry;
}

class ATL_NO_VTABLE VirtualBox :
    public VirtualBoxWrap
#ifdef RT_OS_WINDOWS
     , public ATL::CComCoClass<VirtualBox, &CLSID_VirtualBox>
#endif
{

public:

    typedef std::list<ComPtr<IInternalSessionControl> > InternalControlList;
    typedef ObjectsList<Machine> MachinesOList;

    class CallbackEvent;
    friend class CallbackEvent;

    DECLARE_CLASSFACTORY_SINGLETON(VirtualBox)

    // Do not use any ATL registry support.
    //DECLARE_REGISTRY_RESOURCEID(IDR_VIRTUALBOX)

    // Kind of redundant (VirtualBoxWrap declares itself not aggregatable and
    // CComCoClass<VirtualBox, &CLSID_VirtualBox> as aggregatable, the former
    // is the first inheritance), but the C++ multiple inheritance rules and
    // the class factory in svcmain.cpp needs this to disambiguate.
    DECLARE_NOT_AGGREGATABLE(VirtualBox)

    // to postpone generation of the default ctor/dtor
    DECLARE_EMPTY_CTOR_DTOR(VirtualBox)

    HRESULT FinalConstruct();
    void FinalRelease();

    // public initializer/uninitializer for internal purposes only
    HRESULT init();
    HRESULT initMachines();
    HRESULT initMedia(const Guid &uuidMachineRegistry,
                      const settings::MediaRegistry &mediaRegistry,
                      const Utf8Str &strMachineFolder);
    void uninit();

    // public methods only for internal purposes

    /**
     * Override of the default locking class to be used for validating lock
     * order with the standard member lock handle.
     */
    virtual VBoxLockingClass getLockingClass() const
    {
        return LOCKCLASS_VIRTUALBOXOBJECT;
    }

#ifdef DEBUG
    void i_dumpAllBackRefs();
#endif

    HRESULT i_postEvent(Event *event);

    HRESULT i_addProgress(IProgress *aProgress);
    HRESULT i_removeProgress(IN_GUID aId);

#ifdef RT_OS_WINDOWS
    typedef DECLCALLBACKPTR(HRESULT, SVCHelperClientFunc)
        (SVCHlpClient *aClient, Progress *aProgress, void *aUser, int *aVrc);
    HRESULT i_startSVCHelperClient(bool aPrivileged,
                                   SVCHelperClientFunc aFunc,
                                   void *aUser, Progress *aProgress);
#endif

    void i_addProcessToReap(RTPROCESS pid);
    void i_updateClientWatcher();

    int i_loadVDPlugin(const char *pszPluginLibrary);
    int i_unloadVDPlugin(const char *pszPluginLibrary);

    void i_onMachineStateChange(const Guid &aId, MachineState_T aState);
    void i_onMachineDataChange(const Guid &aId, BOOL aTemporary = FALSE);
    BOOL i_onExtraDataCanChange(const Guid &aId, IN_BSTR aKey, IN_BSTR aValue,
                                Bstr &aError);
    void i_onExtraDataChange(const Guid &aId, IN_BSTR aKey, IN_BSTR aValue);
    void i_onMachineRegistered(const Guid &aId, BOOL aRegistered);
    void i_onSessionStateChange(const Guid &aId, SessionState_T aState);

    void i_onSnapshotTaken(const Guid &aMachineId, const Guid &aSnapshotId);
    void i_onSnapshotDeleted(const Guid &aMachineId, const Guid &aSnapshotId);
    void i_onSnapshotRestored(const Guid &aMachineId, const Guid &aSnapshotId);
    void i_onSnapshotChange(const Guid &aMachineId, const Guid &aSnapshotId);
    void i_onGuestPropertyChange(const Guid &aMachineId, IN_BSTR aName, IN_BSTR aValue,
                                 IN_BSTR aFlags);
    void i_onNatRedirectChange(const Guid &aMachineId, ULONG ulSlot, bool fRemove, IN_BSTR aName,
                                     NATProtocol_T aProto, IN_BSTR aHostIp, uint16_t aHostPort,
                                     IN_BSTR aGuestIp, uint16_t aGuestPort);
    void i_onNATNetworkChange(IN_BSTR aNetworkName);
    void i_onNATNetworkStartStop(IN_BSTR aNetworkName, BOOL aStart);
    void i_onNATNetworkSetting(IN_BSTR aNetworkName, BOOL aEnabled, IN_BSTR aNetwork,
                               IN_BSTR aGateway, BOOL aAdvertiseDefaultIpv6RouteEnabled,
                               BOOL fNeedDhcpServer);
    void i_onNATNetworkPortForward(IN_BSTR aNetworkName, BOOL create, BOOL fIpv6,
                                   IN_BSTR aRuleName, NATProtocol_T proto,
                                   IN_BSTR aHostIp, LONG aHostPort,
                                   IN_BSTR aGuestIp, LONG aGuestPort);
    void i_onHostNameResolutionConfigurationChange();

    int i_natNetworkRefInc(IN_BSTR aNetworkName);
    int i_natNetworkRefDec(IN_BSTR aNetworkName);

    ComObjPtr<GuestOSType> i_getUnknownOSType();

    void i_getOpenedMachines(SessionMachinesList &aMachines,
                           InternalControlList *aControls = NULL);
    MachinesOList &i_getMachinesList();

    HRESULT i_findMachine(const Guid &aId,
                          bool fPermitInaccessible,
                          bool aSetError,
                          ComObjPtr<Machine> *aMachine = NULL);

    HRESULT i_findMachineByName(const Utf8Str &aName,
                                bool aSetError,
                                ComObjPtr<Machine> *aMachine = NULL);

    HRESULT i_validateMachineGroup(const com::Utf8Str &aGroup, bool fPrimary);
    HRESULT i_convertMachineGroups(const std::vector<com::Utf8Str> aMachineGroups, StringsList *pllMachineGroups);

    HRESULT i_findHardDiskById(const Guid &id,
                               bool aSetError,
                               ComObjPtr<Medium> *aHardDisk = NULL);
    HRESULT i_findHardDiskByLocation(const Utf8Str &strLocation,
                                     bool aSetError,
                                     ComObjPtr<Medium> *aHardDisk = NULL);
    HRESULT i_findDVDOrFloppyImage(DeviceType_T mediumType,
                                   const Guid *aId,
                                   const Utf8Str &aLocation,
                                   bool aSetError,
                                   ComObjPtr<Medium> *aImage = NULL);
    HRESULT i_findRemoveableMedium(DeviceType_T mediumType,
                                   const Guid &uuid,
                                   bool fRefresh,
                                   bool aSetError,
                                   ComObjPtr<Medium> &pMedium);

    HRESULT i_findGuestOSType(const Bstr &bstrOSType,
                              GuestOSType*& pGuestOSType);

    const Guid &i_getGlobalRegistryId() const;

    const ComObjPtr<Host>& i_host() const;
    SystemProperties* i_getSystemProperties() const;
#ifdef VBOX_WITH_EXTPACK
    ExtPackManager* i_getExtPackManager() const;
#endif
#ifdef VBOX_WITH_RESOURCE_USAGE_API
    const ComObjPtr<PerformanceCollector>& i_performanceCollector() const;
#endif /* VBOX_WITH_RESOURCE_USAGE_API */

    void i_getDefaultMachineFolder(Utf8Str &str) const;
    void i_getDefaultHardDiskFormat(Utf8Str &str) const;

    /** Returns the VirtualBox home directory */
    const Utf8Str& i_homeDir() const;
    int i_calculateFullPath(const Utf8Str &strPath, Utf8Str &aResult);
    void i_copyPathRelativeToConfig(const Utf8Str &strSource, Utf8Str &strTarget);
    HRESULT i_registerMedium(const ComObjPtr<Medium> &pMedium, ComObjPtr<Medium> *ppMedium,
                             AutoWriteLock &mediaTreeLock);
    HRESULT i_unregisterMedium(Medium *pMedium);
    void i_pushMediumToListWithChildren(MediaList &llMedia, Medium *pMedium);
    HRESULT i_unregisterMachineMedia(const Guid &id);
    HRESULT i_unregisterMachine(Machine *pMachine, const Guid &id);
    void i_rememberMachineNameChangeForMedia(const Utf8Str &strOldConfigDir,
                                             const Utf8Str &strNewConfigDir);
    void i_saveMediaRegistry(settings::MediaRegistry &mediaRegistry,
                             const Guid &uuidRegistry,
                             const Utf8Str &strMachineFolder);
    HRESULT i_saveSettings();
    void i_markRegistryModified(const Guid &uuid);
    void i_unmarkRegistryModified(const Guid &uuid);
    void i_saveModifiedRegistries();
    static const com::Utf8Str &i_getVersionNormalized();
    static HRESULT i_ensureFilePathExists(const Utf8Str &strFileName, bool fCreate);
    const Utf8Str& i_settingsFilePath();
    AutostartDb* i_getAutostartDb() const;
    RWLockHandle& i_getMachinesListLockHandle();
    RWLockHandle& i_getMediaTreeLockHandle();
    int  i_encryptSetting(const Utf8Str &aPlaintext, Utf8Str *aCiphertext);
    int  i_decryptSetting(Utf8Str *aPlaintext, const Utf8Str &aCiphertext);
    void i_storeSettingsKey(const Utf8Str &aKey);
    bool i_isMediaUuidInUse(const Guid &aId, DeviceType_T deviceType);



private:
    class ClientWatcher;

    // wrapped IVirtualBox properties
    HRESULT getVersion(com::Utf8Str &aVersion);
    HRESULT getVersionNormalized(com::Utf8Str &aVersionNormalized);
    HRESULT getRevision(ULONG *aRevision);
    HRESULT getPackageType(com::Utf8Str &aPackageType);
    HRESULT getAPIVersion(com::Utf8Str &aAPIVersion);
    HRESULT getAPIRevision(LONG64 *aAPIRevision);
    HRESULT getHomeFolder(com::Utf8Str &aHomeFolder);
    HRESULT getSettingsFilePath(com::Utf8Str &aSettingsFilePath);
    HRESULT getHost(ComPtr<IHost> &aHost);
    HRESULT getSystemProperties(ComPtr<ISystemProperties> &aSystemProperties);
    HRESULT getMachines(std::vector<ComPtr<IMachine> > &aMachines);
    HRESULT getMachineGroups(std::vector<com::Utf8Str> &aMachineGroups);
    HRESULT getHardDisks(std::vector<ComPtr<IMedium> > &aHardDisks);
    HRESULT getDVDImages(std::vector<ComPtr<IMedium> > &aDVDImages);
    HRESULT getFloppyImages(std::vector<ComPtr<IMedium> > &aFloppyImages);
    HRESULT getProgressOperations(std::vector<ComPtr<IProgress> > &aProgressOperations);
    HRESULT getGuestOSTypes(std::vector<ComPtr<IGuestOSType> > &aGuestOSTypes);
    HRESULT getSharedFolders(std::vector<ComPtr<ISharedFolder> > &aSharedFolders);
    HRESULT getPerformanceCollector(ComPtr<IPerformanceCollector> &aPerformanceCollector);
    HRESULT getDHCPServers(std::vector<ComPtr<IDHCPServer> > &aDHCPServers);
    HRESULT getNATNetworks(std::vector<ComPtr<INATNetwork> > &aNATNetworks);
    HRESULT getEventSource(ComPtr<IEventSource> &aEventSource);
    HRESULT getExtensionPackManager(ComPtr<IExtPackManager> &aExtensionPackManager);
    HRESULT getInternalNetworks(std::vector<com::Utf8Str> &aInternalNetworks);
    HRESULT getGenericNetworkDrivers(std::vector<com::Utf8Str> &aGenericNetworkDrivers);

   // wrapped IVirtualBox methods
    HRESULT composeMachineFilename(const com::Utf8Str &aName,
                                   const com::Utf8Str &aGroup,
                                   const com::Utf8Str &aCreateFlags,
                                   const com::Utf8Str &aBaseFolder,
                                   com::Utf8Str &aFile);
    HRESULT createMachine(const com::Utf8Str &aSettingsFile,
                          const com::Utf8Str &aName,
                          const std::vector<com::Utf8Str> &aGroups,
                          const com::Utf8Str &aOsTypeId,
                          const com::Utf8Str &aFlags,
                          ComPtr<IMachine> &aMachine);
    HRESULT openMachine(const com::Utf8Str &aSettingsFile,
                        ComPtr<IMachine> &aMachine);
    HRESULT registerMachine(const ComPtr<IMachine> &aMachine);
    HRESULT findMachine(const com::Utf8Str &aNameOrId,
                        ComPtr<IMachine> &aMachine);
    HRESULT getMachinesByGroups(const std::vector<com::Utf8Str> &aGroups,
                                std::vector<ComPtr<IMachine> > &aMachines);
    HRESULT getMachineStates(const std::vector<ComPtr<IMachine> > &aMachines,
                             std::vector<MachineState_T> &aStates);
    HRESULT createAppliance(ComPtr<IAppliance> &aAppliance);
    HRESULT createMedium(const com::Utf8Str &aFormat,
                         const com::Utf8Str &aLocation,
                         AccessMode_T aAccessMode,
                         DeviceType_T aDeviceType,
                         ComPtr<IMedium> &aMedium);
    HRESULT openMedium(const com::Utf8Str &aLocation,
                       DeviceType_T aDeviceType,
                       AccessMode_T aAccessMode,
                       BOOL aForceNewUuid,
                       ComPtr<IMedium> &aMedium);
    HRESULT getGuestOSType(const com::Utf8Str &aId,
                           ComPtr<IGuestOSType> &aType);
    HRESULT createSharedFolder(const com::Utf8Str &aName,
                               const com::Utf8Str &aHostPath,
                               BOOL aWritable,
                               BOOL aAutomount);
    HRESULT removeSharedFolder(const com::Utf8Str &aName);
    HRESULT getExtraDataKeys(std::vector<com::Utf8Str> &aKeys);
    HRESULT getExtraData(const com::Utf8Str &aKey,
                         com::Utf8Str &aValue);
    HRESULT setExtraData(const com::Utf8Str &aKey,
                         const com::Utf8Str &aValue);
    HRESULT setSettingsSecret(const com::Utf8Str &aPassword);
    HRESULT createDHCPServer(const com::Utf8Str &aName,
                             ComPtr<IDHCPServer> &aServer);
    HRESULT findDHCPServerByNetworkName(const com::Utf8Str &aName,
                                        ComPtr<IDHCPServer> &aServer);
    HRESULT removeDHCPServer(const ComPtr<IDHCPServer> &aServer);
    HRESULT createNATNetwork(const com::Utf8Str &aNetworkName,
                             ComPtr<INATNetwork> &aNetwork);
    HRESULT findNATNetworkByName(const com::Utf8Str &aNetworkName,
                                 ComPtr<INATNetwork> &aNetwork);
    HRESULT removeNATNetwork(const ComPtr<INATNetwork> &aNetwork);
    HRESULT checkFirmwarePresent(FirmwareType_T aFirmwareType,
                                 const com::Utf8Str &aVersion,
                                 com::Utf8Str &aUrl,
                                 com::Utf8Str &aFile,
                                 BOOL *aResult);

    static HRESULT i_setErrorStatic(HRESULT aResultCode,
                                    const Utf8Str &aText)
    {
        return setErrorInternal(aResultCode, getStaticClassIID(), getStaticComponentName(), aText, false, true);
    }

    HRESULT i_registerMachine(Machine *aMachine);
    HRESULT i_registerDHCPServer(DHCPServer *aDHCPServer,
                                 bool aSaveRegistry = true);
    HRESULT i_unregisterDHCPServer(DHCPServer *aDHCPServer);
    HRESULT i_registerNATNetwork(NATNetwork *aNATNetwork,
                                 bool aSaveRegistry = true);
    HRESULT i_unregisterNATNetwork(NATNetwork *aNATNetwork,
                                   bool aSaveRegistry = true);
    HRESULT i_checkMediaForConflicts(const Guid &aId,
                                     const Utf8Str &aLocation,
                                     Utf8Str &aConflictType,
                                     ComObjPtr<Medium> *pDupMedium);
    int  i_decryptSettings();
    int  i_decryptMediumSettings(Medium *pMedium);
    int  i_decryptSettingBytes(uint8_t *aPlaintext,
                               const uint8_t *aCiphertext,
                               size_t aCiphertextSize) const;
    int  i_encryptSettingBytes(const uint8_t *aPlaintext,
                               uint8_t *aCiphertext,
                               size_t aPlaintextSize,
                               size_t aCiphertextSize) const;
    void i_reportDriverVersions(void);

    struct Data;            // opaque data structure, defined in VirtualBoxImpl.cpp

    Data *m;

    /* static variables (defined in VirtualBoxImpl.cpp) */
    static com::Utf8Str sVersion;
    static com::Utf8Str sVersionNormalized;
    static ULONG sRevision;
    static com::Utf8Str sPackageType;
    static com::Utf8Str sAPIVersion;
    static std::map<com::Utf8Str, int> sNatNetworkNameToRefCount;
    static RWLockHandle* spMtxNatNetworkNameToRefCountLock;

    static DECLCALLBACK(int) AsyncEventHandler(RTTHREAD thread, void *pvUser);

#ifdef RT_OS_WINDOWS
    friend class StartSVCHelperClientData;
    static void i_SVCHelperClientThreadTask(StartSVCHelperClientData *pTask);
#endif

};

////////////////////////////////////////////////////////////////////////////////

#endif // !____H_VIRTUALBOXIMPL