6 Appendix A: Full IDL

import "ms-dtyp.idl";

typedef signed long SequenceNumber;

typedef struct CObjId {
    GUID    _object;
} CObjId;



typedef struct CVolumeId {
    GUID _volume;
} CVolumeId;



typedef struct CMachineId {
    char _szMachine[ 16 ];
} CMachineId;



typedef struct CDomainRelativeObjId {
    CVolumeId _volume;
    CObjId _object;
} CDomainRelativeObjId;



typedef struct CVolumeSecret {
    byte _abSecret[8];
} CVolumeSecret;



typedef struct {
    WCHAR tszFilePath[ 257 ];
    CDomainRelativeObjId droidBirth;
    CDomainRelativeObjId droidLast;
    HRESULT hr;
} old_TRK_FILE_TRACKING_INFORMATION; // Unused



typedef struct {
    CDomainRelativeObjId droidBirth;
    CDomainRelativeObjId droidLast;
    CMachineId mcidLast;
    HRESULT hr;
} TRK_FILE_TRACKING_INFORMATION;



typedef struct {
    unsigned long cSearch;
    [size_is(cSearch)]
        old_TRK_FILE_TRACKING_INFORMATION *pSearches;
} old_TRKSVR_CALL_SEARCH; // Unused



typedef struct {
    unsigned long cSearch;
    [size_is(cSearch)]
        TRK_FILE_TRACKING_INFORMATION *pSearches;
} TRKSVR_CALL_SEARCH;



typedef struct {
    unsigned long cNotifications;
    unsigned long cProcessed;
    SequenceNumber seq;
    long fForceSeqNumber;
    CVolumeId *pvolid;
    [size_is(cNotifications)]
        CObjId *rgobjidCurrent;
    [size_is(cNotifications)]
        CDomainRelativeObjId *rgdroidBirth;
    [size_is(cNotifications)]
        CDomainRelativeObjId *rgdroidNew;
} TRKSVR_CALL_MOVE_NOTIFICATION;



typedef struct {
    unsigned long cSources;
    [size_is(cSources)]
        CDomainRelativeObjId *adroidBirth;
    unsigned long cVolumes;
    [size_is(cVolumes)]
        CVolumeId *avolid;
} TRKSVR_CALL_REFRESH;



typedef struct {
    unsigned long cdroidBirth;
    [size_is(cdroidBirth)]
        CDomainRelativeObjId * adroidBirth;
    unsigned long cVolumes;
    [size_is(cVolumes)] 
        CVolumeId *pVolumes;
} TRKSVR_CALL_DELETE;



typedef [v1_enum] enum {
    CREATE_VOLUME,
    QUERY_VOLUME, 
    CLAIM_VOLUME,
    FIND_VOLUME,
    TEST_VOLUME, // Unused
    DELETE_VOLUME // Unused
} TRKSVR_SYNC_TYPE;



typedef struct {
    HRESULT hr;

    TRKSVR_SYNC_TYPE SyncType;
    CVolumeId volume;
    CVolumeSecret secret;
    CVolumeSecret secretOld;
    SequenceNumber seq;
    FILETIME ftLastRefresh;
    CMachineId machine;
} TRKSVR_SYNC_VOLUME;


typedef struct {
    unsigned long cVolumes;
    [size_is(cVolumes)] 
        TRKSVR_SYNC_VOLUME * pVolumes;
} TRKSVR_CALL_SYNC_VOLUMES;



typedef struct {
    unsigned long cSyncVolumeRequests, cSyncVolumeErrors;
    unsigned long cSyncVolumeThreads;
    unsigned long cCreateVolumeRequests, cCreateVolumeErrors;
    unsigned long cClaimVolumeRequests, cClaimVolumeErrors;
    unsigned long cQueryVolumeRequests, cQueryVolumeErrors;
    unsigned long cFindVolumeRequests, cFindVolumeErrors;
    unsigned long cTestVolumeRequests, cTestVolumeErrors;
    unsigned long cSearchRequests, cSearchErrors, cSearchThreads;
    unsigned long cMoveNotifyRequests, cMoveNotifyErrors;
    unsigned long cMoveNotifyThreads;
    unsigned long cRefreshRequests, cRefreshErrors, cRefreshThreads;
    unsigned long cDeleteNotifyRequests, cDeleteNotifyErrors;
    unsigned long cDeleteNotifyThreads;
    unsigned long ulGCIterationPeriod;

    FILETIME ftLastSuccessfulRequest;
    HRESULT hrLastError;
    unsigned long dwMoveLimit;
    long lRefreshCounter;
    unsigned long dwCachedVolumeTableCount;
    unsigned long dwCachedMoveTableCount;
    FILETIME ftCacheLastUpdated;
    long fIsDesignatedDc;
    FILETIME ftNextGC;
    FILETIME ftServiceStart;
    unsigned long cMaxRpcThreads, cAvailableRpcThreads;
    unsigned long cLowestAvailableRpcThreads;
    unsigned long cNumThreadPoolThreads, cMostThreadPoolThreads;
    short cEntriesToGC;
    short cEntriesGCed;
    short cMaxDsWriteEvents;
    short cCurrentFailedWrites;

    struct {
        unsigned long dwMajor;
        unsigned long dwMinor;
        unsigned long dwBuildNumber;
    } Version;
} TRKSVR_STATISTICS;



typedef struct {
    unsigned long dwParameter;
    unsigned long dwNewValue;
} TRKWKS_CONFIG;



typedef [v1_enum] enum {
    old_SEARCH,
    MOVE_NOTIFICATION,
    REFRESH,
    SYNC_VOLUMES,
    DELETE_NOTIFY,
    STATISTICS,
    SEARCH,
    WKS_CONFIG, // Unused
    WKS_VOLUME_REFRESH // Unused
} TRKSVR_MESSAGE_TYPE;



typedef [v1_enum] enum {
    PRI_0=0,
    PRI_1=1,
    PRI_2=2,
    PRI_3=3,
    PRI_4=4,
    PRI_5=5,
    PRI_6=6,
    PRI_7=7,
    PRI_8=8,
    PRI_9=9
} TRKSVR_MESSAGE_PRIORITY;



typedef struct {
    TRKSVR_MESSAGE_TYPE MessageType;
    TRKSVR_MESSAGE_PRIORITY Priority;

    [switch_is(MessageType)] union {
        [case (old_SEARCH)]
            old_TRKSVR_CALL_SEARCH old_Search; // Unused
        [case (MOVE_NOTIFICATION)]
            TRKSVR_CALL_MOVE_NOTIFICATION MoveNotification;
        [case (REFRESH)]
            TRKSVR_CALL_REFRESH Refresh;
        [case (SYNC_VOLUMES)]
            TRKSVR_CALL_SYNC_VOLUMES SyncVolumes;
        [case (DELETE_NOTIFY)]
            TRKSVR_CALL_DELETE Delete;
        [case (STATISTICS)]
            TRKSVR_STATISTICS Statistics;
        [case (SEARCH)]
            TRKSVR_CALL_SEARCH Search;
        [case (WKS_CONFIG)]
            TRKWKS_CONFIG WksConfig; // Unused
        [case (WKS_VOLUME_REFRESH)]
            unsigned long WksRefresh; // Unused
    };
    [string] WCHAR *ptszMachineID; // Unused
} TRKSVR_MESSAGE_UNION;



[
    uuid(4da1c422-943d-11d1-acae-00c04fc2aa3f),
    version(1.0),
    pointer_default(unique)
]

interface trksvr {
    HRESULT
    LnkSvrMessage (
        [in] handle_t IDL_handle, 
        [in, out] TRKSVR_MESSAGE_UNION * pMsg 
    );

    [callback]  
    HRESULT 
    LnkSvrMessageCallback( 
        [in, out] TRKSVR_MESSAGE_UNION * pMsg 
    );
}