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201 lines
4.7 KiB
201 lines
4.7 KiB
/*++
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Copyright (C) 1997-2001 Microsoft Corporation
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Module Name:
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CLASSFAC.CPP
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Abstract:
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Contains the class factory. This creates objects when
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connections are requested.
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History:
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a-davj 04-Mar-97 Created.
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--*/
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#include "precomp.h"
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#include <wbemidl.h>
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#include <wbemint.h>
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#include <reg.h>
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#include <strsafe.h>
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#include "wbemprox.h"
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#include "locator.h"
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#include "cprovloc.h"
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#include "comtrans.h"
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//***************************************************************************
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//
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// CLocatorFactory::CLocatorFactory
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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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CLocatorFactory::CLocatorFactory(DWORD dwType)
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{
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m_cRef=0L;
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m_dwType = dwType;
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InterlockedIncrement(&g_cObj);
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return;
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}
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//***************************************************************************
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//
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// CLocatorFactory::~CLocatorFactory
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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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CLocatorFactory::~CLocatorFactory(void)
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{
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InterlockedDecrement(&g_cObj);
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return;
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}
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//***************************************************************************
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//
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// CLocatorFactory::QueryInterface
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// CLocatorFactory::AddRef
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// CLocatorFactory::Release
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//
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// Purpose: Standard Ole routines needed for all interfaces
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//
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//***************************************************************************
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STDMETHODIMP CLocatorFactory::QueryInterface(REFIID riid
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, PPVOID ppv)
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{
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*ppv=NULL;
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if (IID_IUnknown==riid || IID_IClassFactory==riid)
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*ppv=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) CLocatorFactory::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) CLocatorFactory::Release(void)
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{
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long lTemp = InterlockedDecrement(&m_cRef);
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if (0L!=lTemp)
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return m_cRef;
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delete this;
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return 0L;
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}
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//***************************************************************************
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//
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// SCODE CLocatorFactory::CreateInstance
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//
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// Description:
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//
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// Instantiates a Provider object returning an interface pointer.
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//
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// Parameters:
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//
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// pUnkOuter LPUNKNOWN to the controlling IUnknown if we are
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// being used in an aggregation.
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// riid REFIID identifying the interface the caller
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// desires to have for the new object.
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// ppvObj PPVOID in which to store the desired
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// interface pointer for the new object.
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//
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// Return Value:
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// HRESULT NOERROR if successful, otherwise E_NOINTERFACE
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// if we cannot support the requested interface.
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//***************************************************************************
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STDMETHODIMP CLocatorFactory::CreateInstance(
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IN LPUNKNOWN pUnkOuter,
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IN REFIID riid,
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OUT PPVOID ppvObj)
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{
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IUnknown * pObj = NULL;
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HRESULT hr;
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*ppvObj=NULL;
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hr=E_OUTOFMEMORY;
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// This object doesnt support aggregation.
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if (NULL!=pUnkOuter)
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return ResultFromScode(CLASS_E_NOAGGREGATION);
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//Create the object passing function to notify on destruction.
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if(m_dwType == LOCATOR)
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pObj=new CLocator();
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else if(m_dwType == ADMINLOC)
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pObj= new CProviderLoc(ADMINLOC);
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else if(m_dwType == AUTHLOC)
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pObj= new CProviderLoc(AUTHLOC);
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else if(m_dwType == UNAUTHLOC)
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pObj= new CProviderLoc(UNAUTHLOC);
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if (NULL==pObj)
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return hr;
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hr=pObj->QueryInterface(riid, ppvObj);
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//Kill the object if initial creation or Init failed.
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if (FAILED(hr))
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delete pObj;
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return hr;
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}
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//***************************************************************************
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//
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// SCODE CLocatorFactory::LockServer
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//
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// Description:
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//
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// Increments or decrements the lock count of the DLL. If the
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// lock count goes to zero and there are no objects, the DLL
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// is allowed to unload. See DllCanUnloadNow.
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//
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// Parameters:
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//
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// fLock BOOL specifying whether to increment or
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// decrement the lock count.
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//
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// Return Value:
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//
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// HRESULT NOERROR always.
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//***************************************************************************
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STDMETHODIMP CLocatorFactory::LockServer(IN BOOL fLock)
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{
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if (fLock)
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InterlockedIncrement((long *)&g_cLock);
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else
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InterlockedDecrement((long *)&g_cLock);
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return NOERROR;
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}
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