484 lines
10 KiB
C++
484 lines
10 KiB
C++
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//---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1995
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//
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// File: cenumdom.cxx
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//
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// Contents: NDS Object Enumeration Code
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//
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// CNDSTreeEnum::CNDSTreeEnum()
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// CNDSTreeEnum::CNDSTreeEnum
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// CNDSTreeEnum::EnumObjects
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// CNDSTreeEnum::EnumObjects
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//
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// History:
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//----------------------------------------------------------------------------
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#include "NDS.hxx"
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#pragma hdrstop
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//+---------------------------------------------------------------------------
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//
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// Function: CNDSEnumVariant::Create
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//
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// Synopsis:
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//
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// Arguments: [pCollection]
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// [ppEnumVariant]
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//
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// Returns: HRESULT
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//
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// Modifies:
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//
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// History: 01-30-95 krishnag Created.
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//
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//----------------------------------------------------------------------------
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HRESULT
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CNDSTreeEnum::Create(
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CNDSTreeEnum FAR* FAR* ppenumvariant,
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BSTR ADsPath,
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VARIANT var,
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CCredentials& Credentials
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)
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{
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HRESULT hr = NOERROR;
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CNDSTreeEnum FAR* penumvariant = NULL;
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WCHAR szObjectFullName[MAX_PATH];
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WCHAR szObjectClassName[MAX_PATH];
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LPWSTR pszTreeName = NULL, pszDn = NULL;
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DWORD dwModificationTime = 0L;
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DWORD dwNumberOfEntries = 0L;
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DWORD dwStatus = 0L;
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*ppenumvariant = NULL;
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penumvariant = new CNDSTreeEnum();
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if (!penumvariant) {
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hr = E_OUTOFMEMORY;
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BAIL_ON_FAILURE(hr);
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}
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hr = ADsAllocString( ADsPath, &penumvariant->_ADsPath);
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BAIL_ON_FAILURE(hr);
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hr = BuildNDSFilterArray(
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var,
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(LPBYTE *)&penumvariant->_pNdsFilterList
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);
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if (FAILED(hr)) {
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penumvariant->_pNdsFilterList = NULL;
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}
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/*
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hr = ObjectTypeList::CreateObjectTypeList(
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var,
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&penumvariant->_pObjList
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);
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BAIL_ON_FAILURE(hr);
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*/
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penumvariant->_Credentials = Credentials;
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*ppenumvariant = penumvariant;
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hr = BuildNDSPathFromADsPath2(
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ADsPath,
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&pszTreeName,
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&pszDn
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);
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BAIL_ON_FAILURE(hr);
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hr = ADsNdsOpenContext(
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pszTreeName,
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Credentials,
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&penumvariant->_hADsContext
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);
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if (pszTreeName) {
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FreeADsStr(pszTreeName);
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}
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if (pszDn) {
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FreeADsStr(pszDn);
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}
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RRETURN(hr);
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error:
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if (penumvariant) {
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}
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delete penumvariant;
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*ppenumvariant = NULL;
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if (pszTreeName) {
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FreeADsStr(pszTreeName);
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}
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if (pszDn) {
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FreeADsStr(pszDn);
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}
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RRETURN(hr);
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}
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CNDSTreeEnum::CNDSTreeEnum():
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_ADsPath(NULL)
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{
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_pObjList = NULL;
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_dwObjectReturned = 0;
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_dwObjectCurrentEntry = 0;
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_dwObjectTotal = 0;
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_hADsContext = NULL;
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_hOperationData = NULL;
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_lpObjects = NULL;
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_pNdsFilterList = NULL;
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_fSchemaReturned = NULL;
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_bNoMore = FALSE;
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}
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CNDSTreeEnum::~CNDSTreeEnum()
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{
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if (_ADsPath) {
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ADsFreeString(_ADsPath);
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}
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if (_pNdsFilterList) {
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FreeFilterList((LPBYTE)_pNdsFilterList);
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}
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if (_hADsContext) {
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ADsNdsCloseContext(_hADsContext);
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}
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ADsNdsFreeNdsObjInfoList(_lpObjects, _dwObjectReturned);
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}
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HRESULT
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CNDSTreeEnum::EnumObjects(
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DWORD ObjectType,
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ULONG cElements,
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VARIANT FAR * pvar,
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ULONG FAR * pcElementFetched
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)
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{
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//
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// Multi-level detection of Objects may not be necessary for NDS code
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//
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RRETURN(EnumGenericObjects(cElements, pvar, pcElementFetched));
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//
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// BugBug- commenting out this layer of code
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//
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/*
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switch (ObjectType) {
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default:
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RRETURN(EnumObjects(cElements, pvar, pcElementFetched));
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} */
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}
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HRESULT
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CNDSTreeEnum::EnumObjects(
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ULONG cElements,
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VARIANT FAR* pvar,
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ULONG FAR* pcElementFetched
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)
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{
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DWORD i;
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ULONG cRequested = 0;
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ULONG cFetchedByPath = 0;
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ULONG cTotalFetched = 0;
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VARIANT FAR* pPathvar = pvar;
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HRESULT hr;
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DWORD ObjectType;
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for (i = 0; i < cElements; i++) {
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VariantInit(&pvar[i]);
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}
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cRequested = cElements;
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while (SUCCEEDED(_pObjList->GetCurrentObject(&ObjectType)) &&
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((hr = EnumObjects(ObjectType,
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cRequested,
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pPathvar,
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&cFetchedByPath)) == S_FALSE )) {
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pPathvar += cFetchedByPath;
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cRequested -= cFetchedByPath;
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cTotalFetched += cFetchedByPath;
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cFetchedByPath = 0;
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if (FAILED(_pObjList->Next())){
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if (pcElementFetched)
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*pcElementFetched = cTotalFetched;
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RRETURN(S_FALSE);
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}
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}
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if (pcElementFetched) {
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*pcElementFetched = cTotalFetched + cFetchedByPath;
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}
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RRETURN(hr);
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}
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HRESULT
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CNDSTreeEnum::EnumGenericObjects(
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ULONG cElements,
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VARIANT FAR* pvar,
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ULONG FAR* pcElementFetched
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)
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{
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HRESULT hr = S_OK;
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IDispatch *pDispatch = NULL;
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DWORD i = 0;
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while (i < cElements) {
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hr = GetGenObject(&pDispatch);
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if (hr == S_FALSE) {
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break;
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}
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VariantInit(&pvar[i]);
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pvar[i].vt = VT_DISPATCH;
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pvar[i].pdispVal = pDispatch;
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(*pcElementFetched)++;
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i++;
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}
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return(hr);
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}
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HRESULT
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CNDSTreeEnum::GetGenObject(
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IDispatch ** ppDispatch
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)
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{
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HRESULT hr = S_OK;
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DWORD dwStatus = 0L;
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PADSNDS_OBJECT_INFO lpCurrentObject = NULL;
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IADs * pADs = NULL;
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*ppDispatch = NULL;
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if (!_hOperationData || (_dwObjectCurrentEntry == _dwObjectReturned)) {
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if (_hOperationData) {
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ADsNdsFreeNdsObjInfoList(_lpObjects, _dwObjectReturned);
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_lpObjects = NULL;
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}
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_dwObjectCurrentEntry = 0;
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_dwObjectReturned = 0;
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if (_bNoMore) {
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hr = S_FALSE;
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goto error;
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}
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hr = ADsNdsListObjects(
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_hADsContext,
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L"[Root]",
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L"",
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L"",
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NULL,
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FALSE,
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&_hOperationData
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);
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BAIL_ON_FAILURE(hr);
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if (hr == S_ADS_NOMORE_ROWS) {
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_bNoMore = TRUE;
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}
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hr = ADsNdsGetObjectListFromBuffer(
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_hADsContext,
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_hOperationData,
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&_dwObjectReturned,
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&_lpObjects
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);
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BAIL_ON_FAILURE(hr);
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if (_dwObjectReturned == 0 ) {
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RRETURN (S_FALSE);
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goto error;
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}
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}
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//
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// Now send back the current object
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//
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lpCurrentObject = _lpObjects + _dwObjectCurrentEntry;
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//
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// Bump up the object count. The instantiation of this object
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// may fail; if we come into this function again, we do not want
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// to pick up the same object.
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//
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_dwObjectCurrentEntry++;
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hr = CNDSGenObject::CreateGenericObject(
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_ADsPath,
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lpCurrentObject->szObjectName,
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lpCurrentObject->szObjectClass,
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_Credentials,
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ADS_OBJECT_BOUND,
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IID_IADs,
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(void **)&pADs
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);
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BAIL_ON_FAILURE(hr);
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//
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// InstantiateDerivedObject should addref this pointer for us.
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//
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hr = InstantiateDerivedObject(
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pADs,
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_Credentials,
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IID_IDispatch,
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(void **)ppDispatch
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);
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if (FAILED(hr)) {
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hr = pADs->QueryInterface(
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IID_IDispatch,
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(void **)ppDispatch
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);
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BAIL_ON_FAILURE(hr);
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}
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error:
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if (hr == S_FALSE) {
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ADsNdsFreeBuffer(_hOperationData);
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_hOperationData = NULL;
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}
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//
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// GetGenObject returns only S_FALSE
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//
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if (FAILED(hr)) {
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hr = S_FALSE;
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}
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//
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// Free the intermediate pADs pointer.
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//
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if (pADs) {
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pADs->Release();
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}
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RRETURN(hr);
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}
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//+---------------------------------------------------------------------------
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//
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// Function: CNDSTreeEnum::Next
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//
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// Synopsis: Returns cElements number of requested NetOle objects in the
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// array supplied in pvar.
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//
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// Arguments: [cElements] -- The number of elements requested by client
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// [pvar] -- ptr to array of VARIANTs to for return objects
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// [pcElementFetched] -- if non-NULL, then number of elements
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// -- actually returned is placed here
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//
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// Returns: HRESULT -- S_OK if number of elements requested are returned
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// -- S_FALSE if number of elements is < requested
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//
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// Modifies:
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//
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// History: 11-3-95 krishnag Created.
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||
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//
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//----------------------------------------------------------------------------
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|
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STDMETHODIMP
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CNDSTreeEnum::Next(
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ULONG cElements,
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VARIANT FAR* pvar,
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|
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ULONG FAR* pcElementFetched
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)
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|
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{
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ULONG cElementFetched = 0;
|
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|
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HRESULT hr = S_OK;
|
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|
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|
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hr = EnumGenericObjects(
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cElements,
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pvar,
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&cElementFetched
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);
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|
|
||
|
|
|
||
|
|
if (pcElementFetched) {
|
||
|
|
*pcElementFetched = cElementFetched;
|
||
|
|
}
|
||
|
|
RRETURN(hr);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
CNDSTreeEnum::EnumSchema(
|
||
|
|
ULONG cElements,
|
||
|
|
VARIANT FAR* pvar,
|
||
|
|
ULONG FAR* pcElementFetched
|
||
|
|
)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
IDispatch *pDispatch = NULL;
|
||
|
|
|
||
|
|
if ( _fSchemaReturned )
|
||
|
|
RRETURN(S_FALSE);
|
||
|
|
|
||
|
|
if ( cElements > 0 )
|
||
|
|
{
|
||
|
|
hr = CNDSSchema::CreateSchema(
|
||
|
|
_ADsPath,
|
||
|
|
TEXT("Schema"),
|
||
|
|
_Credentials,
|
||
|
|
ADS_OBJECT_BOUND,
|
||
|
|
IID_IDispatch,
|
||
|
|
(void **)&pDispatch
|
||
|
|
);
|
||
|
|
|
||
|
|
if ( hr == S_OK )
|
||
|
|
{
|
||
|
|
VariantInit(&pvar[0]);
|
||
|
|
pvar[0].vt = VT_DISPATCH;
|
||
|
|
pvar[0].pdispVal = pDispatch;
|
||
|
|
(*pcElementFetched)++;
|
||
|
|
_fSchemaReturned = TRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
RRETURN(hr);
|
||
|
|
}
|
||
|
|
|