245 lines
6.8 KiB
C++
245 lines
6.8 KiB
C++
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//+------------------------------------------------------------------
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//
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// Copyright (C) 1991-1997 Microsoft Corporation.
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//
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// File: defprop.cxx
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//
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// Contents: Deferred property retriever for filesystems
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//
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// Classes: CCiCDeferredPropRetriever
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//
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// History: 12-Jan-97 SitaramR Created
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//
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//-------------------------------------------------------------------
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#include <pch.cxx>
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#pragma hdrstop
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#include <fsciexps.hxx>
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#include <defprop.hxx>
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#include <seccache.hxx>
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#include <oleprop.hxx>
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//+---------------------------------------------------------------------------
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//
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// Member: CCiCDeferredPropRetriever::CCiCDeferredPropRetriever
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//
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// Synopsis: Constructor
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//
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// Arguments: [cat] -- Catalog
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// [secCache] -- Cache of AccessCheck() results
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// [fUsePathAlias] -- TRUE if client is going through rdr/svr
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//
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// History: 12-Jan-97 SitaramR Created
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//
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//----------------------------------------------------------------------------
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CCiCDeferredPropRetriever::CCiCDeferredPropRetriever( PCatalog & cat,
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CSecurityCache & secCache,
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BOOL fUsePathAlias )
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: _cat( cat ),
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_secCache( secCache ),
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_remoteAccess( cat.GetImpersonationTokenCache() ),
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_fUsePathAlias( fUsePathAlias ),
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_cRefs( 1 )
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{
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CCiCDeferredPropRetriever::~CCiCDeferredPropRetriever
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//
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// Synopsis: Destructor
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//
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// History: 12-Jan-97 SitaramR Created
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//
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//----------------------------------------------------------------------------
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CCiCDeferredPropRetriever::~CCiCDeferredPropRetriever()
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{
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CCiCDeferredPropRetriever::RetrieveDeferredValueByPropSpec
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//
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// Effects: Fetch value from the property cache and/or from docfile
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//
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// Arguments: [wid] -- Workid
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// [pPropSpec] -- Property to fetch
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// [pPropVar] -- Value returned here
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//
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// Notes: It's the responsibility of the caller to free the variant
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// by calling VariantClear on pVar
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//
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// History: 12-Jan-97 SitaramR Created
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//
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//----------------------------------------------------------------------------
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SCODE STDMETHODCALLTYPE CCiCDeferredPropRetriever::RetrieveDeferredValueByPropSpec(
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WORKID wid,
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const FULLPROPSPEC * pPropSpec,
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PROPVARIANT * pVar )
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{
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//
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// Set up the failure case
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//
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pVar->vt = VT_EMPTY;
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if ( widInvalid == wid )
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return CI_E_WORKID_NOTVALID;
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SCODE sc = S_OK;
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TRY
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{
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//
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// First check the security access
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//
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// 8-byte align this memory
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XArray<BYTE> xBuf( sizeof_CCompositePropRecord );
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XCompositeRecord rec( _cat, wid, xBuf.Get() );
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SDID sdid = _cat.FetchSDID( rec.Get(), wid );
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BOOL fGranted = _secCache.IsGranted( sdid, FILE_READ_DATA );
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if ( fGranted )
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{
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CFullPropSpec *pPS = (CFullPropSpec *) pPropSpec;
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PROPID pid = _cat.PropertyToPropId( *pPS, TRUE );
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if ( ! _cat.FetchValue( rec.Get(), pid, *pVar ) )
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{
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//
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// Try fetching the value from the docfile
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//
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rec.Free();
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CFunnyPath funnyPath;
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SIZE_T cwc = _cat.WorkIdToPath( wid, funnyPath );
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if ( cwc > 0 )
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{
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XGrowable<WCHAR> xVPath;
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cwc = _cat.WorkIdToVirtualPath( wid, 0, xVPath );
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if ( CImpersonateRemoteAccess::IsNetPath( funnyPath.GetActualPath() ) )
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_remoteAccess.ImpersonateIf( funnyPath.GetActualPath(),
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cwc != 0 ? xVPath.Get() : 0 );
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else if ( _remoteAccess.IsImpersonated() )
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_remoteAccess.Release();
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COLEPropManager propMgr;
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propMgr.Open( funnyPath );
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propMgr.ReadProperty( *pPS, *pVar );
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}
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}
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}
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else
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{
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vqDebugOut(( DEB_ERROR,
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"CCiCDeferredPropRetriever::RetrieveDeferredValueByPropSpec, security check failed\n" ));
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}
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}
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CATCH( CException, e )
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{
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sc = e.GetErrorCode();
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vqDebugOut(( DEB_ERROR,
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"CCiCDeferredPropRetriever::RetrieveDeferredValueByPropSpec - Exception caught 0x%x\n",
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sc ));
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}
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END_CATCH;
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return sc;
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} //RetrieveDeferredValueByPropSpec
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//+-------------------------------------------------------------------------
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//
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// Method: CCiCDeferredPropRetriever::AddRef
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//
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// Synopsis: Increments refcount
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//
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// History: 12-Jan-1997 SitaramR Created
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//
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//--------------------------------------------------------------------------
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ULONG STDMETHODCALLTYPE CCiCDeferredPropRetriever::AddRef()
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{
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return InterlockedIncrement( (long *) &_cRefs );
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}
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//+-------------------------------------------------------------------------
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//
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// Method: CCiCDeferredPropRetriever::Release
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//
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// Synopsis: Decrement refcount. Delete if necessary.
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//
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// History: 12-Jan-1997 SitaramR Created
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//
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//--------------------------------------------------------------------------
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ULONG STDMETHODCALLTYPE CCiCDeferredPropRetriever::Release()
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{
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Win4Assert( _cRefs > 0 );
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ULONG uTmp = InterlockedDecrement( (long *) &_cRefs );
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if ( 0 == uTmp )
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delete this;
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return uTmp;
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}
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//+-------------------------------------------------------------------------
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//
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// Method: CCiCDeferredPropRetriever::QueryInterface
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//
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// Synopsis: Rebind to other interface
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//
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// Arguments: [riid] -- IID of new interface
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// [ppvObject] -- New interface * returned here
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//
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// Returns: S_OK if bind succeeded, E_NOINTERFACE if bind failed
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//
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// History: 12-Jan-1997 SitaramR Created
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//
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//--------------------------------------------------------------------------
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SCODE STDMETHODCALLTYPE CCiCDeferredPropRetriever::QueryInterface(
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REFIID riid,
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void ** ppvObject)
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{
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IUnknown *pUnkTemp = 0;
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SCODE sc = S_OK;
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if ( IID_ICiCDeferredPropRetriever == riid )
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pUnkTemp = (IUnknown *)(ICiCDeferredPropRetriever *) this;
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else if ( IID_IUnknown == riid )
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pUnkTemp = (IUnknown *) this;
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else
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sc = E_NOINTERFACE;
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if( 0 != pUnkTemp )
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{
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*ppvObject = (void * )pUnkTemp;
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pUnkTemp->AddRef();
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}
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else
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{
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*ppvObject = 0;
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}
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return sc;
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} //QueryInterface
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