Erstellen eines Speicheradapters

Artikel
06/13/2023
Das folgende Codebeispiel zeigt die grundlegende Struktur eines Speicheradapter-Plug-Ins, das als C++-DLL (Dynamic Link Library) implementiert ist. Um Pseudocodeimplementierungen jeder öffentlichen Funktion in der DLL anzuzeigen, wechseln Sie zu Speicheradapterfunktionen. Wenn Sie keine Funktionalität für eine bestimmte Funktion bereitstellen möchten, müssen Sie einen Stub dafür definieren und E_NOTIMPL zurückgeben.
*++
 
    THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
    ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
    THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
    PARTICULAR PURPOSE.

    Copyright (C) Microsoft. All rights reserved.

Module Name:

    StorageAdapter.cpp

Abstract:

    This module contains a stub implementation of a Storage Adapter
    plug-in for the Windows Biometric service.


    -

Environment:

    Win32, user mode only.

Revision History:

NOTES:

    (None)

--*/

/////////////////////////////////////////////////////////////////////////////////////////
//
// Header files.
//
#include "Stdafx.h"
#include "Winbio_adapter.h"
#include "StorageAdapter.h"


/////////////////////////////////////////////////////////////////////////////////////////
//
// Forward declarations for the storage adapter interface routines.
//
static HRESULT
WINAPI
StorageAdapterAttach(
    __inout PWINBIO_PIPELINE Pipeline
    );

static HRESULT
WINAPI
StorageAdapterDetach(
    __inout PWINBIO_PIPELINE Pipeline
    );

static HRESULT
WINAPI
StorageAdapterClearContext(
    __inout PWINBIO_PIPELINE Pipeline
    );

static HRESULT
WINAPI
StorageAdapterCreateDatabase(
    __inout PWINBIO_PIPELINE Pipeline,
    __in PWINBIO_UUID DatabaseId,
    __in WINBIO_BIOMETRIC_TYPE Factor,
    __in PWINBIO_UUID Format,
    __in LPCWSTR FilePath,
    __in LPCWSTR ConnectString,
    __in SIZE_T IndexElementCount,
    __in SIZE_T InitialSize
    );

static HRESULT
WINAPI
StorageAdapterEraseDatabase(
    __inout PWINBIO_PIPELINE Pipeline,
    __in PWINBIO_UUID DatabaseId,
    __in LPCWSTR FilePath,
    __in LPCWSTR ConnectString
    );

static HRESULT
WINAPI
StorageAdapterOpenDatabase(
    __inout PWINBIO_PIPELINE Pipeline,
    __in PWINBIO_UUID DatabaseId,
    __in LPCWSTR FilePath,
    __in LPCWSTR ConnectString
    );

static HRESULT
WINAPI
StorageAdapterCloseDatabase(
    __inout PWINBIO_PIPELINE Pipeline
    );

static HRESULT
WINAPI
StorageAdapterGetDataFormat(
    __inout PWINBIO_PIPELINE Pipeline,
    __out PWINBIO_UUID Format,
    __out PWINBIO_VERSION Version
    );

static HRESULT
WINAPI
StorageAdapterGetDatabaseSize(
    __inout PWINBIO_PIPELINE Pipeline,
    __out PSIZE_T AvailableRecordCount,
    __out PSIZE_T TotalRecordCount
    );

static HRESULT
WINAPI
StorageAdapterAddRecord(
    __inout PWINBIO_PIPELINE Pipeline,
    __in PWINBIO_STORAGE_RECORD RecordContents
    );

static HRESULT
WINAPI
StorageAdapterDeleteRecord(
    __inout PWINBIO_PIPELINE Pipeline,
    __in PWINBIO_IDENTITY Identity,
    __in WINBIO_BIOMETRIC_SUBTYPE SubFactor
    );

static HRESULT
WINAPI
StorageAdapterQueryBySubject(
    __inout PWINBIO_PIPELINE Pipeline,
    __in PWINBIO_IDENTITY Identity,
    __in WINBIO_BIOMETRIC_SUBTYPE SubFactor
    );

static HRESULT
WINAPI
StorageAdapterQueryByContent(
    __inout PWINBIO_PIPELINE Pipeline,
    __in WINBIO_BIOMETRIC_SUBTYPE SubFactor,
    __in ULONG IndexVector[],
    __in SIZE_T IndexElementCount
    );

static HRESULT
WINAPI
StorageAdapterGetRecordCount(
    __inout PWINBIO_PIPELINE Pipeline,
    __out PSIZE_T RecordCount
    );

static HRESULT
WINAPI
StorageAdapterFirstRecord(
    __inout PWINBIO_PIPELINE Pipeline
    );

static HRESULT
WINAPI
StorageAdapterNextRecord(
    __inout PWINBIO_PIPELINE Pipeline
    );

static HRESULT
WINAPI
StorageAdapterGetCurrentRecord(
    __inout PWINBIO_PIPELINE Pipeline,
    __out PWINBIO_STORAGE_RECORD RecordContents
    );

static HRESULT
WINAPI
StorageAdapterControlUnit(
    __inout PWINBIO_PIPELINE Pipeline,
    __in ULONG ControlCode,
    __in PUCHAR SendBuffer,
    __in SIZE_T SendBufferSize,
    __in PUCHAR ReceiveBuffer,
    __in SIZE_T ReceiveBufferSize,
    __out PSIZE_T ReceiveDataSize,
    __out PULONG OperationStatus
    );

static HRESULT
WINAPI
StorageAdapterControlUnitPrivileged(
    __inout PWINBIO_PIPELINE Pipeline,
    __in ULONG ControlCode,
    __in PUCHAR SendBuffer,
    __in SIZE_T SendBufferSize,
    __in PUCHAR ReceiveBuffer,
    __in SIZE_T ReceiveBufferSize,
    __out PSIZE_T ReceiveDataSize,
    __out PULONG OperationStatus
    );

/////////////////////////////////////////////////////////////////////////////////////////
//
// Interface dispatch table
//
static WINBIO_STORAGE_INTERFACE g_StorageInterface = {
    WINBIO_STORAGE_INTERFACE_VERSION_1,
    WINBIO_ADAPTER_TYPE_STORAGE,
    sizeof(WINBIO_STORAGE_INTERFACE),
    {0xdec3f1f2, 0x44c0, 0x4e84, {0x95, 0x97, 0x88, 0x80, 0xec, 0x89, 0x32, 0x77}},

    StorageAdapterAttach,
    StorageAdapterDetach,
    StorageAdapterClearContext,
    StorageAdapterCreateDatabase,
    StorageAdapterEraseDatabase,
    StorageAdapterOpenDatabase,
    StorageAdapterCloseDatabase,
    StorageAdapterGetDataFormat,
    StorageAdapterGetDatabaseSize,
    StorageAdapterAddRecord,
    StorageAdapterDeleteRecord,
    StorageAdapterQueryBySubject,
    StorageAdapterQueryByContent,
    StorageAdapterGetRecordCount,
    StorageAdapterFirstRecord,
    StorageAdapterNextRecord,
    StorageAdapterGetCurrentRecord,
    StorageAdapterControlUnit,
    StorageAdapterControlUnitPrivileged
};

/////////////////////////////////////////////////////////////////////////////////////////
//
// Mandatory DLL entry point function.
//
BOOL APIENTRY 
DllMain( 
    HANDLE ModuleHandle, 
    DWORD ReasonForCall, 
    LPVOID Reserved
    )
{
    UNREFERENCED_PARAMETER(ModuleHandle);
    UNREFERENCED_PARAMETER(ReasonForCall);
    UNREFERENCED_PARAMETER(Reserved);

    return TRUE;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// Well-known interface discovery function exported by the Storage Adapter
//
HRESULT
WINAPI
WbioQueryStorageInterface(
    __out PWINBIO_STORAGE_INTERFACE *StorageInterface
    )
{
    *StorageInterface = &g_StorageInterface;
    return S_OK;
}

//////////////////////////////////////////////////////////////////////////////////////////
//
// Required routines.
//      This sample adapter assumes that the following three inline functions 
//      are declared in the private sensor adapter header file. The first two
//      perform memory management. The third normalizes error codes.
//
inline
PVOID
_AdapterAlloc(
    __in SIZE_T ByteCount
    )
{
    return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, ByteCount);
}

inline
VOID
_AdapterRelease(
    __in PVOID Address
    )
{
    HeapFree(GetProcessHeap(), 0, Address);
}

inline HRESULT
_AdapterGetHresultFromWin32(
    __in DWORD Error
    )
{
    if ((Error == ERROR_CANCELLED) ||
        (Error == ERROR_OPERATION_ABORTED))
    {
        return WINBIO_E_CANCELED;
    }
    else
    {
        return WINBIO_E_DEVICE_FAILURE;
    }
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterAttach
//
// Purpose:
//      Performs any initialization required for later biometric operations.
//
static HRESULT
WINAPI
StorageAdapterAttach(
    __inout PWINBIO_PIPELINE Pipeline
    )
{
    
    // See the StorageAdapterAttach documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterDetach
//
// Purpose:
//      Release adapter specific resources attached to the pipeline.
//
static HRESULT
WINAPI
StorageAdapterDetach(
    __inout PWINBIO_PIPELINE Pipeline
    )
{
    
    // See the StorageAdapterDetach documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterClearContext
//
// Purpose:
//      Prepare the processing pipeline of the biometric unit for a 
//      new operation.
//
static HRESULT
WINAPI
StorageAdapterClearContext(
    __inout PWINBIO_PIPELINE Pipeline
    )
{
    
    // See the StorageAdapterClearContext documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterCreateDatabase
//
// Purpose:
//      Creates and configures a new database.
//
static HRESULT
WINAPI
StorageAdapterCreateDatabase(
    __inout PWINBIO_PIPELINE Pipeline,
    __in PWINBIO_UUID DatabaseId,
    __in WINBIO_BIOMETRIC_TYPE Factor,
    __in PWINBIO_UUID Format,
    __in LPCWSTR FilePath,
    __in LPCWSTR ConnectString,
    __in SIZE_T IndexElementCount,
    __in SIZE_T InitialSize
    )
{
    
    // See the StorageAdapterCreateDatabase documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterEraseDatabase
//
// Purpose:
//      Erases the database and marks it for deletion.
//
static HRESULT
WINAPI
StorageAdapterEraseDatabase(
    __inout PWINBIO_PIPELINE Pipeline,
    __in PWINBIO_UUID DatabaseId,
    __in LPCWSTR FilePath,
    __in LPCWSTR ConnectString
   )
{
    
    // See the StorageAdapterEraseDatabase documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterOpenDatabase
//
// Purpose:
//      Opens the database.
//
static HRESULT
WINAPI
StorageAdapterOpenDatabase(
    __inout PWINBIO_PIPELINE Pipeline,
    __in PWINBIO_UUID DatabaseId,
    __in LPCWSTR FilePath,
    __in LPCWSTR ConnectString
    )
{
    
    // See the StorageAdapterOpenDatabase documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterCloseDatabase
//
// Purpose:
//      Close the database associated with the pipeline and free all 
//      related resources.
//
static HRESULT
WINAPI
StorageAdapterCloseDatabase(
    __inout PWINBIO_PIPELINE Pipeline
    )
{
    
    // See the StorageAdapterCloseDatabase documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterGetDataFormat
//
// Purpose:
//      Retrieves format and version information used by the current database 
//      associated with the pipeline.
//
static HRESULT
WINAPI
StorageAdapterGetDataFormat(
    __inout PWINBIO_PIPELINE Pipeline,
    __out PWINBIO_UUID Format,
    __out PWINBIO_VERSION Version
    )
{
    
    // See the StorageAdapterGetDataFormat documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterGetDatabaseSize
//
// Purpose:
//      Retrieves the database size and available space.
//
static HRESULT
WINAPI
StorageAdapterGetDatabaseSize(
    __inout PWINBIO_PIPELINE Pipeline,
    __out PSIZE_T AvailableRecordCount,
    __out PSIZE_T TotalRecordCount
    )
{
    
    // See the StorageAdapterGetDatabaseSize documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterAddRecord
//
// Purpose:
//      Adds a template to the database.
//
static HRESULT
WINAPI
StorageAdapterAddRecord(
    __inout PWINBIO_PIPELINE Pipeline,
    __in PWINBIO_STORAGE_RECORD RecordContents
    )
{
    
    // See the StorageAdapterAddRecord documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterDeleteRecord
//
// Purpose:
//      Deletes one or more templates from the database.
//
static HRESULT
WINAPI
StorageAdapterDeleteRecord(
    __inout PWINBIO_PIPELINE Pipeline,
    __in PWINBIO_IDENTITY Identity,
    __in WINBIO_BIOMETRIC_SUBTYPE SubFactor
    )
{
    
    // See the StorageAdapterDeleteRecord documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterQueryBySubject
//
// Purpose:
//      Locates templates that match a specified identity and sub-factor.
//
static HRESULT
WINAPI
StorageAdapterQueryBySubject(
    __inout PWINBIO_PIPELINE Pipeline,
    __in PWINBIO_IDENTITY Identity,
    __in WINBIO_BIOMETRIC_SUBTYPE SubFactor
    )
{
    
    // See the StorageAdapterQueryBySubject documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterQueryByContent
//
// Purpose:
//      Locates templates that match a specified index vector.
//
static HRESULT
WINAPI
StorageAdapterQueryByContent(
    __inout PWINBIO_PIPELINE Pipeline,
    __in WINBIO_BIOMETRIC_SUBTYPE SubFactor,
    __in ULONG IndexVector[],
    __in SIZE_T IndexElementCount
    )
{
    
    // See the StorageAdapterQueryByContent documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterGetRecordCount
//
// Purpose:
//      Retrieves the number of template records in the pipeline result set.
//
static HRESULT
WINAPI
StorageAdapterGetRecordCount(
    __inout PWINBIO_PIPELINE Pipeline,
    __out PSIZE_T RecordCount
    )
{
    
    // See the StorageAdapterGetRecordCount documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterFirstRecord
//
// Purpose:
//      Positions the result set cursor on the first record in the set.
//
static HRESULT
WINAPI
StorageAdapterFirstRecord(
    __inout PWINBIO_PIPELINE Pipeline
    )
{
    
    // See the StorageAdapterFirstRecord documentation for an implementation example.

    return S_OK;
}
/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterNextRecord
//
// Purpose:
//      Advances the result set cursor by one record.
//
static HRESULT
WINAPI
StorageAdapterNextRecord(
    __inout PWINBIO_PIPELINE Pipeline
    )
{
    
    // See the StorageAdapterNextRecord documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterGetCurrentRecord
//
// Purpose:
//      Retrieves the contents of the current record in the pipeline result set.
//
static HRESULT
WINAPI
StorageAdapterGetCurrentRecord(
    __inout PWINBIO_PIPELINE Pipeline,
    __out PWINBIO_STORAGE_RECORD RecordContents
    )
{
    
    // See the StorageAdapterGetCurrentRecord documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterControlUnit
//
// Purpose:
//       Performs a vendor-defined control operation that does not require 
//       elevated privilege.
//
static HRESULT
WINAPI
StorageAdapterControlUnit(
    __inout PWINBIO_PIPELINE Pipeline,
    __in ULONG ControlCode,
    __in PUCHAR SendBuffer,
    __in SIZE_T SendBufferSize,
    __in PUCHAR ReceiveBuffer,
    __in SIZE_T ReceiveBufferSize,
    __out PSIZE_T ReceiveDataSize,
    __out PULONG OperationStatus
    )
{
    
    // See the StorageAdapterControlUnit documentation for an implementation example.

    return S_OK;
}

/////////////////////////////////////////////////////////////////////////////////////////
//
// StorageAdapterControlUnitPrivileged
//
// Purpose:
//      Performs a vendor-defined control operation that requires elevated privilege.
//
static HRESULT
WINAPI
StorageAdapterControlUnitPrivileged(
    __inout PWINBIO_PIPELINE Pipeline,
    __in ULONG ControlCode,
    __in PUCHAR SendBuffer,
    __in SIZE_T SendBufferSize,
    __in PUCHAR ReceiveBuffer,
    __in SIZE_T ReceiveBufferSize,
    __out PSIZE_T ReceiveDataSize,
    __out PULONG OperationStatus
    )
{
    
    // See the StorageAdapterControlUnitPrivileged documentation for an implementation example.

    return S_OK;
}
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