770 lines
17 KiB
C++
770 lines
17 KiB
C++
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/*++
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Copyright (c) 1997 Microsoft Corporation
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Module Name:
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mb.cxx
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Abstract:
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This module implements the MB class.
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Author:
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Keith Moore (keithmo) 05-Feb-1997
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Moved from "inlines" in MB.HXX.
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Revision History:
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--*/
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#include "imiscp.hxx"
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//
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// Default timeout
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//
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#define MB_TIMEOUT (30 * 1000)
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//
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// Default timeout for SaveData
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//
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#define MB_SAVE_TIMEOUT (10 * 1000) // milliseconds
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MB::MB( IMDCOM * pMBCom )
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: _pMBCom( pMBCom ),
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_hMB ( NULL )
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{
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DBG_ASSERT( _pMBCom );
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}
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MB::~MB( VOID )
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{
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Close();
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_pMBCom = NULL;
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}
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BOOL MB::EnumObjects( const CHAR * pszPath,
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CHAR * Name,
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DWORD Index )
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{
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HRESULT hRes = _pMBCom->ComMDEnumMetaObjects( _hMB,
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(BYTE *)pszPath,
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(BYTE *)Name,
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Index );
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if ( SUCCEEDED( hRes ))
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{
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return TRUE;
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}
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SetLastError( HRESULTTOWIN32( hRes ));
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return FALSE;
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}
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BOOL MB::AddObject( const CHAR * pszPath )
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{
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HRESULT hRes = _pMBCom->ComMDAddMetaObject( _hMB,
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(BYTE *)pszPath );
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if ( SUCCEEDED( hRes ))
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{
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return TRUE;
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}
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SetLastError( HRESULTTOWIN32( hRes ));
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return FALSE;
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}
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BOOL MB::DeleteObject( const CHAR * pszPath )
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{
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HRESULT hRes = _pMBCom->ComMDDeleteMetaObject( _hMB,
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(BYTE *)pszPath );
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if ( SUCCEEDED( hRes ))
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{
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return TRUE;
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}
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SetLastError( HRESULTTOWIN32( hRes ));
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return FALSE;
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}
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BOOL MB::ReleaseReferenceData( DWORD dwTag )
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{
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HRESULT hRes = _pMBCom->ComMDReleaseReferenceData( dwTag );
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if ( SUCCEEDED( hRes ))
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{
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return TRUE;
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}
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SetLastError( HRESULTTOWIN32( hRes ));
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return FALSE;
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}
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BOOL MB::Save( VOID )
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{
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HRESULT hRes;
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METADATA_HANDLE mdhRoot;
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//
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// First try to lock the tree
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//
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hRes = _pMBCom->ComMDOpenMetaObjectW(METADATA_MASTER_ROOT_HANDLE,
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NULL,
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METADATA_PERMISSION_READ,
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MB_SAVE_TIMEOUT,
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&mdhRoot);
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//
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// If failed, then someone has a write handle open,
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// and there might be an inconsistent data state, so don't save.
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//
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if (SUCCEEDED(hRes)) {
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//
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// call metadata com api
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//
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hRes = _pMBCom->ComMDSaveData(mdhRoot);
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_pMBCom->ComMDCloseMetaObject(mdhRoot);
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}
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if ( SUCCEEDED( hRes ))
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{
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return TRUE;
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}
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SetLastError( HRESULTTOWIN32( hRes ));
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return FALSE;
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}
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BOOL MB::GetSystemChangeNumber( DWORD *pdwChangeNumber )
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{
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HRESULT hRes = _pMBCom->ComMDGetSystemChangeNumber(pdwChangeNumber);
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if ( SUCCEEDED( hRes ))
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{
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return TRUE;
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}
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SetLastError( HRESULTTOWIN32( hRes ));
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return FALSE;
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}
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BOOL MB::DeleteData(const CHAR * pszPath,
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DWORD dwPropID,
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DWORD dwUserType,
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DWORD dwDataType )
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{
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HRESULT hRes = _pMBCom->ComMDDeleteMetaData( _hMB,
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(LPBYTE) pszPath,
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dwPropID,
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dwDataType );
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if ( SUCCEEDED( hRes ))
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{
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return TRUE;
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}
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SetLastError( HRESULTTOWIN32( hRes ));
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return(FALSE);
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}
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BOOL MB::Close( VOID )
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{
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if ( _hMB )
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{
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DBG_REQUIRE( SUCCEEDED(_pMBCom->ComMDCloseMetaObject( _hMB )) );
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_hMB = NULL;
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}
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return TRUE;
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}
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BOOL
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MB::Open(
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METADATA_HANDLE hOpenRoot,
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const CHAR * pszPath,
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DWORD dwFlags
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)
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/*++
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Routine Description:
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Opens the metabase
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Arguments:
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hOpenRoot - Relative root or METADATA_MASTER_ROOT_HANDLE
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pszPath - Path to open
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dwFlags - Open flags
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Return:
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TRUE if success, FALSE on error, (call GetLastError())
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--*/
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{
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HRESULT hRes;
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DBG_ASSERT(_hMB == NULL);
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hRes = _pMBCom->ComMDOpenMetaObject( hOpenRoot,
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(BYTE *) pszPath,
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dwFlags,
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MB_TIMEOUT,
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&_hMB );
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if ( SUCCEEDED( hRes ))
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{
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return TRUE;
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}
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DBGPRINTF(( DBG_CONTEXT,
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"[MB::Open] Failed to open %s, error %x (%d)\n",
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pszPath,
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hRes,
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HRESULTTOWIN32( hRes ) ));
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SetLastError( HRESULTTOWIN32( hRes ) );
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return FALSE;
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}
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BOOL
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MB::SetData(
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const CHAR * pszPath,
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DWORD dwPropID,
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DWORD dwUserType,
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DWORD dwDataType,
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VOID * pvData,
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DWORD cbData,
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DWORD dwFlags
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)
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/*++
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Routine Description:
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Sets a metadata property on an openned metabase
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Arguments:
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pszPath - Path to set data on
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dwPropID - Metabase property ID
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dwUserType - User type for this property
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dwDataType - Type of data being set (dword, string etc)
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pvData - Pointer to data
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cbData - Size of data
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dwFlags - Inheritance flags
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Return:
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TRUE if success, FALSE on error, (call GetLastError())
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--*/
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{
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METADATA_RECORD mdRecord;
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HRESULT hRes;
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DBG_ASSERT( _hMB );
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mdRecord.dwMDIdentifier = dwPropID;
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mdRecord.dwMDAttributes = dwFlags;
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mdRecord.dwMDUserType = dwUserType;
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mdRecord.dwMDDataType = dwDataType;
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mdRecord.dwMDDataLen = cbData;
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mdRecord.pbMDData = (PBYTE) pvData;
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hRes = _pMBCom->ComMDSetMetaData( _hMB,
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(LPBYTE) pszPath,
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&mdRecord );
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if ( SUCCEEDED( hRes ))
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{
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return TRUE;
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}
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DBGPRINTF(( DBG_CONTEXT,
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"[MB::SetData] Failed to open %s, error %x (%d)\n",
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pszPath,
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hRes,
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HRESULTTOWIN32( hRes ) ));
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SetLastError( HRESULTTOWIN32( hRes ) );
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return FALSE;
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}
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BOOL
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MB::GetData(
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const CHAR * pszPath,
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DWORD dwPropID,
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DWORD dwUserType,
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DWORD dwDataType,
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VOID * pvData,
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DWORD * pcbData,
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DWORD dwFlags
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)
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/*++
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Routine Description:
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Retrieves a metadata property on an openned metabase
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Arguments:
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pszPath - Path to set data on
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dwPropID - Metabase property ID
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dwUserType - User type for this property
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dwDataType - Type of data being set (dword, string etc)
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pvData - Pointer to data
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pcbData - Size of pvData, receives size of object
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dwFlags - Inheritance flags
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Return:
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TRUE if success, FALSE on error, (call GetLastError())
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--*/
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{
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DBG_ASSERT( _hMB );
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DBG_ASSERT(pcbData);
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METADATA_RECORD mdRecord;
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HRESULT hRes;
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DWORD dwRequiredLen = *pcbData;
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mdRecord.dwMDIdentifier = dwPropID;
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mdRecord.dwMDAttributes = dwFlags;
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mdRecord.dwMDUserType = dwUserType;
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mdRecord.dwMDDataType = dwDataType;
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mdRecord.dwMDDataLen = *pcbData;
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mdRecord.pbMDData = (PBYTE) pvData;
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hRes = _pMBCom->ComMDGetMetaData( _hMB,
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(LPBYTE) pszPath,
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&mdRecord,
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&dwRequiredLen );
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if ( SUCCEEDED( hRes ))
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{
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*pcbData = mdRecord.dwMDDataLen;
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return TRUE;
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}
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*pcbData = dwRequiredLen;
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#if 0
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DBGPRINTF(( DBG_CONTEXT,
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"[MB::GetData] Failed, PropID(%d), UserType(%d) Flags(%d) on %s, hRes = 0x%08x (%d)\n",
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dwPropID,
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dwUserType,
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dwFlags,
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pszPath,
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hRes,
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HRESULTTOWIN32( hRes ) ));
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#endif
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SetLastError( HRESULTTOWIN32( hRes ) );
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return FALSE;
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}
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BOOL
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MB::ReferenceData(
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const CHAR * pszPath,
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DWORD dwPropID,
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DWORD dwUserType,
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DWORD dwDataType,
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VOID * * ppvData,
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DWORD * pcbData,
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DWORD * pdwTag,
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DWORD dwFlags
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)
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/*++
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Routine Description:
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References a metadata property item
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Arguments:
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pszPath - Path to set data on
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dwPropID - Metabase property ID
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dwUserType - User type for this property
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dwDataType - Type of data being set (dword, string etc)
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ppvData - Receives pointer to referenced data
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pdwTag - Receives dword tag for releasing this reference
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dwFlags - flags (must have METADATA_REFERENCE)
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Return:
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TRUE if success, FALSE on error, (call GetLastError())
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--*/
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{
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METADATA_RECORD mdRecord;
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HRESULT hRes;
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DWORD dwRequiredLen;
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DBG_ASSERT( _hMB );
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mdRecord.dwMDIdentifier = dwPropID;
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mdRecord.dwMDAttributes = dwFlags;
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mdRecord.dwMDUserType = dwUserType;
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mdRecord.dwMDDataType = dwDataType;
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mdRecord.dwMDDataLen = 0;
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mdRecord.pbMDData = NULL;
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hRes = _pMBCom->ComMDGetMetaData( _hMB,
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(LPBYTE) pszPath,
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&mdRecord,
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&dwRequiredLen );
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if ( SUCCEEDED( hRes ))
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{
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*ppvData = mdRecord.pbMDData;
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|
|
*pcbData = mdRecord.dwMDDataLen;
|
||
|
|
*pdwTag = mdRecord.dwMDDataTag;
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
SetLastError( HRESULTTOWIN32( hRes ) );
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL MB::GetAll(
|
||
|
|
const CHAR * pszPath,
|
||
|
|
DWORD dwFlags,
|
||
|
|
DWORD dwUserType,
|
||
|
|
BUFFER * pBuff,
|
||
|
|
DWORD * pcRecords,
|
||
|
|
DWORD * pdwDataSetNumber
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Retrieves all the metabase properties on this path of the request type
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
pszPath - Path to set data on
|
||
|
|
dwFlags - Inerhitance flags
|
||
|
|
dwPropID - Metabase property ID
|
||
|
|
dwUserType - User type for this property
|
||
|
|
dwDataType - Type of data being set (dword, string etc)
|
||
|
|
pvData - Pointer to data
|
||
|
|
pcbData - Size of pvData, receives size of object
|
||
|
|
dwFlags - Inheritance flags
|
||
|
|
|
||
|
|
Return:
|
||
|
|
|
||
|
|
TRUE if success, FALSE on error, (call GetLastError())
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
DWORD RequiredSize;
|
||
|
|
HRESULT hRes;
|
||
|
|
|
||
|
|
DBG_ASSERT( _hMB );
|
||
|
|
|
||
|
|
TryAgain:
|
||
|
|
|
||
|
|
hRes = _pMBCom->ComMDGetAllMetaData( _hMB,
|
||
|
|
(unsigned char *)pszPath,
|
||
|
|
dwFlags,
|
||
|
|
dwUserType,
|
||
|
|
ALL_METADATA,
|
||
|
|
pcRecords,
|
||
|
|
pdwDataSetNumber,
|
||
|
|
pBuff->QuerySize(),
|
||
|
|
(PBYTE)pBuff->QueryPtr(),
|
||
|
|
&RequiredSize
|
||
|
|
);
|
||
|
|
|
||
|
|
// See if we got it, and if we failed because of lack of buffer space
|
||
|
|
// try again.
|
||
|
|
|
||
|
|
if ( SUCCEEDED(hRes) )
|
||
|
|
{
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Some sort of error, most likely not enough buffer space. Keep
|
||
|
|
// trying until we get a non-fatal error.
|
||
|
|
|
||
|
|
if (HRESULT_FACILITY(hRes) == FACILITY_WIN32 &&
|
||
|
|
HRESULT_CODE(hRes) == ERROR_INSUFFICIENT_BUFFER) {
|
||
|
|
|
||
|
|
// Not enough buffer space. RequiredSize contains the amount
|
||
|
|
// the metabase thinks we need.
|
||
|
|
|
||
|
|
if ( !pBuff->Resize(RequiredSize) ) {
|
||
|
|
|
||
|
|
// Not enough memory to resize.
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
goto TryAgain;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL MB::GetDataSetNumber(
|
||
|
|
const CHAR * pszPath,
|
||
|
|
DWORD * pdwDataSetNumber
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Retrieves the data set number and size of the data from the
|
||
|
|
metabase.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
pszPath - Path to set data on
|
||
|
|
pdwDataSetNumber - Where to return the data set number.
|
||
|
|
|
||
|
|
Return:
|
||
|
|
|
||
|
|
TRUE if success, FALSE on error, (call GetLastError())
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
HRESULT hRes;
|
||
|
|
|
||
|
|
//
|
||
|
|
// We allow _hMB to be null (root handle) for this API (though technically
|
||
|
|
// all the APIs allow the metabase handle to be null)
|
||
|
|
//
|
||
|
|
|
||
|
|
hRes = _pMBCom->ComMDGetDataSetNumber( _hMB,
|
||
|
|
(unsigned char *)pszPath,
|
||
|
|
pdwDataSetNumber );
|
||
|
|
|
||
|
|
return SUCCEEDED(hRes);
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
MB::GetStr(
|
||
|
|
const CHAR * pszPath,
|
||
|
|
DWORD dwPropID,
|
||
|
|
DWORD dwUserType,
|
||
|
|
STR * pstrValue,
|
||
|
|
DWORD dwFlags,
|
||
|
|
const CHAR * pszDefault
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Retrieves the string from the metabase. If the value wasn't found and
|
||
|
|
a default is supplied, then the default value is copied to the string.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
pszPath - Path to get data on
|
||
|
|
dwPropID - property id to retrieve
|
||
|
|
dwUserType - User type for this property
|
||
|
|
pstrValue - string that receives the value
|
||
|
|
dwFlags - Metabase flags
|
||
|
|
pszDefault - Default value to use if the string isn't found, NULL
|
||
|
|
for no default value (i.e., will return an error).
|
||
|
|
|
||
|
|
Return:
|
||
|
|
|
||
|
|
TRUE if success, FALSE on error, (call GetLastError())
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
DWORD cbSize = pstrValue->QuerySize();
|
||
|
|
|
||
|
|
TryAgain:
|
||
|
|
|
||
|
|
if ( !GetData( pszPath,
|
||
|
|
dwPropID,
|
||
|
|
dwUserType,
|
||
|
|
STRING_METADATA,
|
||
|
|
pstrValue->QueryStr(),
|
||
|
|
&cbSize,
|
||
|
|
dwFlags ))
|
||
|
|
{
|
||
|
|
if ( GetLastError() == MD_ERROR_DATA_NOT_FOUND )
|
||
|
|
{
|
||
|
|
if ( pszDefault != NULL )
|
||
|
|
{
|
||
|
|
return pstrValue->Copy( pszDefault );
|
||
|
|
}
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
else if ( GetLastError() == ERROR_INSUFFICIENT_BUFFER &&
|
||
|
|
pstrValue->Resize( cbSize ) )
|
||
|
|
{
|
||
|
|
goto TryAgain;
|
||
|
|
}
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
DBG_REQUIRE( pstrValue->SetLen( cbSize ? (cbSize - 1) : 0 ));
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
MB::GetMultisz(
|
||
|
|
const CHAR * pszPath,
|
||
|
|
DWORD dwPropID,
|
||
|
|
DWORD dwUserType,
|
||
|
|
MULTISZ * multiszValue,
|
||
|
|
DWORD dwFlags
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Retrieves the string from the metabase. If the value wasn't found and
|
||
|
|
a default is supplied, then the default value is copied to the string.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
pszPath - Path to get data on
|
||
|
|
dwPropID - property id to retrieve
|
||
|
|
dwUserType - User type for this property
|
||
|
|
multiszValue - multi-string that receives the value
|
||
|
|
dwFlags - Metabase flags
|
||
|
|
|
||
|
|
Return:
|
||
|
|
|
||
|
|
TRUE if success, FALSE on error, (call GetLastError())
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
DWORD cbSize = multiszValue->QuerySize();
|
||
|
|
|
||
|
|
TryAgain:
|
||
|
|
|
||
|
|
if ( !GetData( pszPath,
|
||
|
|
dwPropID,
|
||
|
|
dwUserType,
|
||
|
|
MULTISZ_METADATA,
|
||
|
|
multiszValue->QueryStr(),
|
||
|
|
&cbSize,
|
||
|
|
dwFlags ))
|
||
|
|
{
|
||
|
|
if ( GetLastError() == MD_ERROR_DATA_NOT_FOUND )
|
||
|
|
{
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
else if ( GetLastError() == ERROR_INSUFFICIENT_BUFFER &&
|
||
|
|
multiszValue->Resize( cbSize ) )
|
||
|
|
{
|
||
|
|
goto TryAgain;
|
||
|
|
}
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Value was read directly into the buffer so update the member
|
||
|
|
// variables
|
||
|
|
//
|
||
|
|
|
||
|
|
multiszValue->RecalcLen();
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
BOOL MB::GetDataPaths(
|
||
|
|
const CHAR * pszPath,
|
||
|
|
DWORD dwPropID,
|
||
|
|
DWORD dwDataType,
|
||
|
|
BUFFER * pBuff
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Retrieves all the metabase properties on this path of the request type
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
pszPath - Path to set data on
|
||
|
|
dwFlags - Inerhitance flags
|
||
|
|
dwPropID - Metabase property ID
|
||
|
|
dwUserType - User type for this property
|
||
|
|
dwDataType - Type of data being set (dword, string etc)
|
||
|
|
pvData - Pointer to data
|
||
|
|
pcbData - Size of pvData, receives size of object
|
||
|
|
dwFlags - Inheritance flags
|
||
|
|
|
||
|
|
Return:
|
||
|
|
|
||
|
|
TRUE if success, FALSE on error, (call GetLastError())
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
DWORD RequiredSize;
|
||
|
|
HRESULT hRes;
|
||
|
|
|
||
|
|
DBG_ASSERT( _hMB );
|
||
|
|
DBG_ASSERT( pBuff != NULL );
|
||
|
|
|
||
|
|
TryAgain:
|
||
|
|
|
||
|
|
hRes = _pMBCom->ComMDGetMetaDataPaths( _hMB,
|
||
|
|
(unsigned char *)pszPath,
|
||
|
|
dwPropID,
|
||
|
|
dwDataType,
|
||
|
|
pBuff->QuerySize(),
|
||
|
|
(PBYTE)pBuff->QueryPtr(),
|
||
|
|
&RequiredSize
|
||
|
|
);
|
||
|
|
|
||
|
|
// See if we got it, and if we failed because of lack of buffer space
|
||
|
|
// try again.
|
||
|
|
|
||
|
|
if ( SUCCEEDED(hRes) )
|
||
|
|
{
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Some sort of error, most likely not enough buffer space. Keep
|
||
|
|
// trying until we get a non-fatal error.
|
||
|
|
|
||
|
|
if (HRESULT_FACILITY(hRes) == FACILITY_WIN32 &&
|
||
|
|
HRESULT_CODE(hRes) == ERROR_INSUFFICIENT_BUFFER) {
|
||
|
|
|
||
|
|
// Not enough buffer space. RequiredSize contains the amount
|
||
|
|
// the metabase thinks we need.
|
||
|
|
|
||
|
|
if ( !pBuff->Resize(RequiredSize) ) {
|
||
|
|
|
||
|
|
// Not enough memory to resize.
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
goto TryAgain;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|