707 lines
15 KiB
C++
707 lines
15 KiB
C++
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//***************************************************************************
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//
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// Copyright (c) 1998-1999 Microsoft Corporation
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//
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// SOBJPATH.CPP
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//
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// alanbos 15-Aug-96 Created.
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//
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// Defines the implementation of ISWbemObjectPathEx
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//
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//***************************************************************************
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#include "precomp.h"
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///***************************************************************************
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//
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// CSWbemObjectPathComponents::CSWbemObjectPathComponents
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//
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// DESCRIPTION:
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//
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// Constructor.
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//
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//***************************************************************************
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CSWbemObjectPathComponents::CSWbemObjectPathComponents(
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CWbemPathCracker *pCWbemPathCracker,
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bool bMutable
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) : m_cRef (0),
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m_pCWbemPathCracker (pCWbemPathCracker),
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m_bMutable (bMutable)
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{
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m_Dispatch.SetObj (this, IID_ISWbemObjectPathComponents,
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CLSID_SWbemObjectPathComponents, L"SWbemObjectPathComponents");
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if (m_pCWbemPathCracker)
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m_pCWbemPathCracker->AddRef ();
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InterlockedIncrement(&g_cObj);
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}
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CSWbemObjectPathComponents::CSWbemObjectPathComponents(
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const BSTR & bsPath,
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bool bMutable
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) : m_cRef (0),
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m_pCWbemPathCracker (NULL),
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m_bMutable (bMutable)
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{
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m_Dispatch.SetObj (this, IID_ISWbemObjectPathComponents,
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CLSID_SWbemObjectPathComponents, L"SWbemObjectPathComponents");
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m_pCWbemPathCracker = new CWbemPathCracker (bsPath);
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if (m_pCWbemPathCracker)
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m_pCWbemPathCracker->AddRef ();
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InterlockedIncrement(&g_cObj);
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}
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//***************************************************************************
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//
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// CSWbemObjectPathComponents::~CSWbemObjectPathComponents
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//
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// DESCRIPTION:
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//
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// Destructor.
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//
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//***************************************************************************
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CSWbemObjectPathComponents::~CSWbemObjectPathComponents(void)
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{
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RELEASEANDNULL(m_pCWbemPathCracker)
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InterlockedDecrement(&g_cObj);
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}
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//***************************************************************************
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// HRESULT CSWbemObjectPathComponents::QueryInterface
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// long CSWbemObjectPathComponents::AddRef
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// long CSWbemObjectPathComponents::Release
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//
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// DESCRIPTION:
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//
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// Standard Com IUNKNOWN functions.
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//
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//***************************************************************************
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STDMETHODIMP CSWbemObjectPathComponents::QueryInterface (
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IN REFIID riid,
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OUT LPVOID *ppv
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)
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{
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*ppv=NULL;
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if (IID_IUnknown==riid)
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*ppv = reinterpret_cast<IUnknown*>(this);
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else if (IID_ISWbemObjectPathComponents==riid)
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*ppv = (ISWbemObjectPathComponents *)this;
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else if (IID_IDispatch==riid)
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*ppv = (IDispatch *)this;
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else if (IID_ISupportErrorInfo==riid)
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*ppv = (ISupportErrorInfo *)this;
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else if (IID_IProvideClassInfo==riid)
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*ppv = (IProvideClassInfo *)this;
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if (NULL!=*ppv)
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{
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((LPUNKNOWN)*ppv)->AddRef();
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return NOERROR;
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}
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return ResultFromScode(E_NOINTERFACE);
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}
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STDMETHODIMP_(ULONG) CSWbemObjectPathComponents::AddRef(void)
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{
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InterlockedIncrement(&m_cRef);
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return m_cRef;
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}
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STDMETHODIMP_(ULONG) CSWbemObjectPathComponents::Release(void)
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{
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InterlockedDecrement(&m_cRef);
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if (0L!=m_cRef)
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return m_cRef;
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delete this;
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return 0;
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}
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//***************************************************************************
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//
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// SCODE CSWbemObjectPathComponents::get__NewEnum
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//
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// DESCRIPTION:
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//
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// Return an IEnumVARIANT-supporting interface for collections
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//
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// PARAMETERS:
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//
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// ppUnk on successful return addresses the IUnknown interface
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//
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// RETURN VALUES:
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//
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// S_OK success
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// E_FAIL otherwise
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//
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//***************************************************************************
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HRESULT CSWbemObjectPathComponents::get__NewEnum (
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IUnknown **ppUnk
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)
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{
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HRESULT hr = E_FAIL;
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ResetLastErrors ();
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if (NULL != ppUnk)
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{
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*ppUnk = NULL;
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CEnumObjectPathComponent *pEnumObjectPathComponent =
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new CEnumObjectPathComponent (m_pCWbemPathCracker, m_bMutable);
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if (!pEnumObjectPathComponent)
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hr = WBEM_E_OUT_OF_MEMORY;
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else if (FAILED(hr = pEnumObjectPathComponent->QueryInterface (IID_IUnknown, (PPVOID) ppUnk)))
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delete pEnumObjectPathComponent;
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}
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if (FAILED(hr))
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m_Dispatch.RaiseException (hr);
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return hr;
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}
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//***************************************************************************
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//
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// SCODE CSWbemObjectPathComponents::get_Count
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//
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// DESCRIPTION:
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//
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// Return the number of items in the collection
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//
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// PARAMETERS:
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//
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// plCount on successful return addresses the count
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//
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// RETURN VALUES:
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//
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// S_OK success
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// E_FAIL otherwise
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//
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//***************************************************************************
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HRESULT CSWbemObjectPathComponents::get_Count (
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long *plCount
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)
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{
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HRESULT hr = E_FAIL;
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ResetLastErrors ();
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if (NULL == plCount)
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hr = WBEM_E_INVALID_PARAMETER;
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else if (m_pCWbemPathCracker)
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{
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ULONG lCount = 0;
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if (m_pCWbemPathCracker->GetComponentCount (lCount))
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{
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*plCount = lCount;
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hr = WBEM_S_NO_ERROR;
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}
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}
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if (FAILED(hr))
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m_Dispatch.RaiseException (hr);
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return hr;
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}
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//***************************************************************************
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//
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// SCODE CSWbemObjectPathComponents::Add
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//
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// DESCRIPTION:
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//
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// Add a single scope element to the list
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//
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// PARAMETERS:
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//
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// bsScopePath path form of scope element
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// iIndex index for insertion (-1 is at the end)
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// ppISWbemScopeElement addresses the SWbemScopeElement on successful return
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//
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// RETURN VALUES:
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//
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// WBEM_S_NO_ERROR success
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// WBEM_E_INVALID_PARAMETER bad input parameters
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// WBEM_E_NOT_FOUND index out of range
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// WBEM_E_FAILED otherwise
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//
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//***************************************************************************
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HRESULT CSWbemObjectPathComponents::Add (
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BSTR bsComponent,
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long iIndex
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)
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{
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HRESULT hr = WBEM_E_FAILED;
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ResetLastErrors ();
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if (NULL == bsComponent)
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hr = WBEM_E_INVALID_PARAMETER;
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else if (!m_bMutable)
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hr = WBEM_E_READ_ONLY;
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else if (m_pCWbemPathCracker)
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{
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if (m_pCWbemPathCracker->AddComponent (iIndex, bsComponent))
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hr = WBEM_S_NO_ERROR;
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}
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if (FAILED(hr))
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m_Dispatch.RaiseException (hr);
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return hr;
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}
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//***************************************************************************
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//
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// SCODE CSWbemObjectPathComponents::Set
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//
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// DESCRIPTION:
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//
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// Change an existing component in the list
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//
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// PARAMETERS:
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//
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// bsScopePath path form of component
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// iIndex index (-1 is at the end)
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//
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// RETURN VALUES:
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//
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// WBEM_S_NO_ERROR success
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// WBEM_E_INVALID_PARAMETER bad input parameters
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// WBEM_E_NOT_FOUND index out of range
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// WBEM_E_FAILED otherwise
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//
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//***************************************************************************
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HRESULT CSWbemObjectPathComponents::Set (
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BSTR bsComponent,
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long iIndex
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)
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{
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HRESULT hr = WBEM_E_FAILED;
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ResetLastErrors ();
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if (NULL == bsComponent)
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hr = WBEM_E_INVALID_PARAMETER;
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else if (!m_bMutable)
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hr = WBEM_E_READ_ONLY;
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else if (m_pCWbemPathCracker)
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{
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if (m_pCWbemPathCracker->SetComponent (iIndex, bsComponent))
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hr = WBEM_S_NO_ERROR;
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}
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if (FAILED(hr))
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m_Dispatch.RaiseException (hr);
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return hr;
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}
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//***************************************************************************
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//
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// SCODE CSWbemObjectPathComponents::Remove
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//
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// DESCRIPTION:
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//
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// Remove element from scope list
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//
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// PARAMETERS:
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//
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// iIndex Index of object to retrieve (default -1)
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//
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// RETURN VALUES:
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//
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// WBEM_S_NO_ERROR success
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// WBEM_E_INVALID_PARAMETER bad input parameters
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// WBEM_E_NOT_FOUND index out of range
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// WBEM_E_FAILED otherwise
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//
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//***************************************************************************
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HRESULT CSWbemObjectPathComponents::Remove (
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long iIndex
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)
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{
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HRESULT hr = WBEM_E_FAILED;
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ResetLastErrors ();
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if (!m_bMutable)
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hr = WBEM_E_READ_ONLY;
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else if (m_pCWbemPathCracker)
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{
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if (m_pCWbemPathCracker->RemoveComponent (iIndex))
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hr = WBEM_S_NO_ERROR;
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else
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hr = wbemErrValueOutOfRange;
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}
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if (FAILED(hr))
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m_Dispatch.RaiseException (hr);
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return hr;
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}
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//***************************************************************************
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//
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// SCODE CSWbemObjectPathComponents::DeleteAll
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//
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// DESCRIPTION:
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//
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// Remove all elements from the scope
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//
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// PARAMETERS:
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//
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// none
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//
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// RETURN VALUES:
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//
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// WBEM_S_NO_ERROR success
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// WBEM_E_INVALID_PARAMETER bad input parameters
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// WBEM_E_NOT_FOUND index out of range
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// WBEM_E_FAILED otherwise
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//
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//***************************************************************************
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HRESULT CSWbemObjectPathComponents::DeleteAll (
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)
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{
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HRESULT hr = WBEM_E_FAILED;
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ResetLastErrors ();
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if (!m_bMutable)
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hr = WBEM_E_READ_ONLY;
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else if (m_pCWbemPathCracker)
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{
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if (m_pCWbemPathCracker->RemoveAllComponents ())
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hr = WBEM_S_NO_ERROR;
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}
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return hr;
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}
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//***************************************************************************
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//
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// SCODE CSWbemObjectPathComponents::Item
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//
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// DESCRIPTION:
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//
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// Get element from the list by index.
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//
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// PARAMETERS:
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//
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// iIndex Index of object to retrieve
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// lFlags Flags
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// ppSWbemScopeElement On successful return addresses the object
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//
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// RETURN VALUES:
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//
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// WBEM_S_NO_ERROR success
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// WBEM_E_INVALID_PARAMETER bad input parameters
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// WBEM_E_NOT_FOUND index out of range
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// WBEM_E_FAILED otherwise
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//
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//***************************************************************************
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HRESULT CSWbemObjectPathComponents::Item (
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long iIndex,
|
||
|
|
BSTR *pbsComponent
|
||
|
|
)
|
||
|
|
{
|
||
|
|
HRESULT hr = WBEM_E_NOT_FOUND;
|
||
|
|
ResetLastErrors ();
|
||
|
|
|
||
|
|
if ((NULL == pbsComponent) || (0 > iIndex))
|
||
|
|
hr = WBEM_E_INVALID_PARAMETER;
|
||
|
|
else if (m_pCWbemPathCracker)
|
||
|
|
{
|
||
|
|
CComBSTR bsComponent;
|
||
|
|
|
||
|
|
if (m_pCWbemPathCracker->GetComponent (iIndex, bsComponent))
|
||
|
|
{
|
||
|
|
*pbsComponent = bsComponent.Detach ();
|
||
|
|
hr = WBEM_S_NO_ERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (FAILED(hr))
|
||
|
|
m_Dispatch.RaiseException (hr);
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
// CEnumObjectPathComponent Methods
|
||
|
|
|
||
|
|
//***************************************************************************
|
||
|
|
//
|
||
|
|
// CEnumObjectPathComponent::CEnumObjectPathComponent
|
||
|
|
//
|
||
|
|
// DESCRIPTION:
|
||
|
|
//
|
||
|
|
// Constructor.
|
||
|
|
//
|
||
|
|
//***************************************************************************
|
||
|
|
|
||
|
|
CEnumObjectPathComponent::CEnumObjectPathComponent(
|
||
|
|
CWbemPathCracker *pCWbemPathCracker,
|
||
|
|
bool bMutable
|
||
|
|
)
|
||
|
|
: m_cRef (0),
|
||
|
|
m_iIndex (0),
|
||
|
|
m_pCWbemPathCracker (pCWbemPathCracker),
|
||
|
|
m_bMutable (bMutable)
|
||
|
|
{
|
||
|
|
if (m_pCWbemPathCracker)
|
||
|
|
m_pCWbemPathCracker->AddRef ();
|
||
|
|
|
||
|
|
InterlockedIncrement(&g_cObj);
|
||
|
|
}
|
||
|
|
|
||
|
|
//***************************************************************************
|
||
|
|
//
|
||
|
|
// CEnumObjectPathComponent::~CEnumObjectPathComponent
|
||
|
|
//
|
||
|
|
// DESCRIPTION:
|
||
|
|
//
|
||
|
|
// Destructor.
|
||
|
|
//
|
||
|
|
//***************************************************************************
|
||
|
|
|
||
|
|
CEnumObjectPathComponent::~CEnumObjectPathComponent(void)
|
||
|
|
{
|
||
|
|
InterlockedDecrement(&g_cObj);
|
||
|
|
|
||
|
|
RELEASEANDNULL(m_pCWbemPathCracker)
|
||
|
|
}
|
||
|
|
|
||
|
|
//***************************************************************************
|
||
|
|
// HRESULT CEnumObjectPathComponent::QueryInterface
|
||
|
|
// long CEnumObjectPathComponent::AddRef
|
||
|
|
// long CEnumObjectPathComponent::Release
|
||
|
|
//
|
||
|
|
// DESCRIPTION:
|
||
|
|
//
|
||
|
|
// Standard Com IUNKNOWN functions.
|
||
|
|
//
|
||
|
|
//***************************************************************************
|
||
|
|
|
||
|
|
STDMETHODIMP CEnumObjectPathComponent::QueryInterface (
|
||
|
|
|
||
|
|
IN REFIID riid,
|
||
|
|
OUT LPVOID *ppv
|
||
|
|
)
|
||
|
|
{
|
||
|
|
*ppv=NULL;
|
||
|
|
|
||
|
|
if (IID_IUnknown==riid || IID_IEnumVARIANT==riid)
|
||
|
|
*ppv=this;
|
||
|
|
|
||
|
|
if (NULL!=*ppv)
|
||
|
|
{
|
||
|
|
((LPUNKNOWN)*ppv)->AddRef();
|
||
|
|
return NOERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ResultFromScode(E_NOINTERFACE);
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP_(ULONG) CEnumObjectPathComponent::AddRef(void)
|
||
|
|
{
|
||
|
|
long l = InterlockedIncrement(&m_cRef);
|
||
|
|
return l;
|
||
|
|
}
|
||
|
|
|
||
|
|
STDMETHODIMP_(ULONG) CEnumObjectPathComponent::Release(void)
|
||
|
|
{
|
||
|
|
long l = InterlockedDecrement(&m_cRef);
|
||
|
|
if (0L!=l)
|
||
|
|
return l;
|
||
|
|
delete this;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
//***************************************************************************
|
||
|
|
//
|
||
|
|
// SCODE CEnumObjectPathComponent::Reset
|
||
|
|
//
|
||
|
|
// DESCRIPTION:
|
||
|
|
//
|
||
|
|
// Reset the enumeration
|
||
|
|
//
|
||
|
|
// PARAMETERS:
|
||
|
|
//
|
||
|
|
// RETURN VALUES:
|
||
|
|
//
|
||
|
|
// S_OK success
|
||
|
|
// S_FALSE otherwise
|
||
|
|
//
|
||
|
|
//***************************************************************************
|
||
|
|
|
||
|
|
HRESULT CEnumObjectPathComponent::Reset ()
|
||
|
|
{
|
||
|
|
m_iIndex = 0;
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
//***************************************************************************
|
||
|
|
//
|
||
|
|
// SCODE CEnumObjectPathComponent::Next
|
||
|
|
//
|
||
|
|
// DESCRIPTION:
|
||
|
|
//
|
||
|
|
// Get the next object in the enumeration
|
||
|
|
//
|
||
|
|
// PARAMETERS:
|
||
|
|
//
|
||
|
|
// lTimeout Number of ms to wait for object (or WBEM_INFINITE for
|
||
|
|
// indefinite)
|
||
|
|
// ppObject On return may contain the next element (if any)
|
||
|
|
//
|
||
|
|
// RETURN VALUES:
|
||
|
|
//
|
||
|
|
// S_OK success
|
||
|
|
// S_FALSE not all elements could be returned
|
||
|
|
//
|
||
|
|
//***************************************************************************
|
||
|
|
|
||
|
|
HRESULT CEnumObjectPathComponent::Next (
|
||
|
|
ULONG cElements,
|
||
|
|
VARIANT FAR* pVar,
|
||
|
|
ULONG FAR* pcElementFetched
|
||
|
|
)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
ULONG l2 = 0;
|
||
|
|
|
||
|
|
if (NULL != pcElementFetched)
|
||
|
|
*pcElementFetched = 0;
|
||
|
|
|
||
|
|
if ((NULL != pVar) && (m_pCWbemPathCracker))
|
||
|
|
{
|
||
|
|
for (ULONG l = 0; l < cElements; l++)
|
||
|
|
VariantInit (&pVar [l]);
|
||
|
|
|
||
|
|
// Retrieve the next cElements elements.
|
||
|
|
for (l2 = 0; l2 < cElements; l2++)
|
||
|
|
{
|
||
|
|
CComBSTR bsName;
|
||
|
|
|
||
|
|
if (m_pCWbemPathCracker->GetComponent (m_iIndex, bsName))
|
||
|
|
{
|
||
|
|
pVar[l2].vt = VT_BSTR;
|
||
|
|
pVar[l2].bstrVal = bsName.Detach ();
|
||
|
|
m_iIndex++;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (NULL != pcElementFetched)
|
||
|
|
*pcElementFetched = l2;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (FAILED(hr))
|
||
|
|
return hr;
|
||
|
|
|
||
|
|
return (l2 < cElements) ? S_FALSE : S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
//***************************************************************************
|
||
|
|
//
|
||
|
|
// SCODE CEnumObjectPathComponent::Clone
|
||
|
|
//
|
||
|
|
// DESCRIPTION:
|
||
|
|
//
|
||
|
|
// Create a copy of this enumeration
|
||
|
|
//
|
||
|
|
// PARAMETERS:
|
||
|
|
//
|
||
|
|
// ppEnum on successful return addresses the clone
|
||
|
|
//
|
||
|
|
// RETURN VALUES:
|
||
|
|
//
|
||
|
|
// WBEM_S_NO_ERROR success
|
||
|
|
// WBEM_E_FAILED otherwise
|
||
|
|
//
|
||
|
|
//***************************************************************************
|
||
|
|
|
||
|
|
HRESULT CEnumObjectPathComponent::Clone (
|
||
|
|
IEnumVARIANT **ppEnum
|
||
|
|
)
|
||
|
|
{
|
||
|
|
HRESULT hr = E_FAIL;
|
||
|
|
|
||
|
|
if (NULL != ppEnum)
|
||
|
|
{
|
||
|
|
*ppEnum = NULL;
|
||
|
|
|
||
|
|
if (m_pCWbemPathCracker)
|
||
|
|
{
|
||
|
|
CEnumObjectPathComponent *pEnum =
|
||
|
|
new CEnumObjectPathComponent (m_pCWbemPathCracker, m_bMutable);
|
||
|
|
|
||
|
|
if (!pEnum)
|
||
|
|
hr = WBEM_E_OUT_OF_MEMORY;
|
||
|
|
else if (FAILED(hr = pEnum->QueryInterface (IID_IEnumVARIANT, (PPVOID) ppEnum)))
|
||
|
|
delete pEnum;;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
//***************************************************************************
|
||
|
|
//
|
||
|
|
// SCODE CEnumObjectPathComponent::Skip
|
||
|
|
//
|
||
|
|
// DESCRIPTION:
|
||
|
|
//
|
||
|
|
// Skip specified number of elements
|
||
|
|
//
|
||
|
|
// PARAMETERS:
|
||
|
|
//
|
||
|
|
// ppEnum on successful return addresses the clone
|
||
|
|
//
|
||
|
|
// RETURN VALUES:
|
||
|
|
//
|
||
|
|
// S_OK success
|
||
|
|
// S_FALSE end of sequence reached prematurely
|
||
|
|
//
|
||
|
|
//***************************************************************************
|
||
|
|
|
||
|
|
HRESULT CEnumObjectPathComponent::Skip(
|
||
|
|
ULONG cElements
|
||
|
|
)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_FALSE;
|
||
|
|
|
||
|
|
if (m_pCWbemPathCracker)
|
||
|
|
{
|
||
|
|
// Get the count
|
||
|
|
ULONG lComponentCount = 0;
|
||
|
|
|
||
|
|
if (m_pCWbemPathCracker->GetComponentCount (lComponentCount))
|
||
|
|
{
|
||
|
|
if (m_iIndex + cElements < lComponentCount)
|
||
|
|
{
|
||
|
|
hr = S_OK;
|
||
|
|
m_iIndex += cElements;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|