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134 lines
4.8 KiB
134 lines
4.8 KiB
/********************************************************************
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Copyright (c) 1999 Microsoft Corporation
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Module Name:
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PCH_CDROM.CPP
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Abstract:
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WBEM provider class implementation for PCH_CDROM class
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Revision History:
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Ghim-Sim Chua (gschua) 04/27/99
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- Created
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Ghim-Sim Chua (gschua) 05/02/99
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- Modified code to use CopyProperty function
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- Use CComBSTR instead of USES_CONVERSION
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********************************************************************/
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#include "pchealth.h"
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#include "PCH_CDROM.h"
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/////////////////////////////////////////////////////////////////////////////
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// tracing stuff
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#ifdef THIS_FILE
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#undef THIS_FILE
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#endif
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static char __szTraceSourceFile[] = __FILE__;
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#define THIS_FILE __szTraceSourceFile
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#define TRACE_ID DCID_CDROM
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CPCH_CDROM MyPCH_CDROMSet (PROVIDER_NAME_PCH_CDROM, PCH_NAMESPACE) ;
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// Property names
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//===============
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const static WCHAR* pTimeStamp = L"TimeStamp" ;
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const static WCHAR* pChange = L"Change" ;
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const static WCHAR* pDataTransferIntegrity = L"DataTransferIntegrity" ;
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const static WCHAR* pDescription = L"Description" ;
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const static WCHAR* pDeviceID = L"DeviceID" ;
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const static WCHAR* pDriveLetter = L"DriveLetter" ;
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const static WCHAR* pManufacturer = L"Manufacturer" ;
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const static WCHAR* pSCSITargetID = L"SCSITargetID" ;
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const static WCHAR* pTransferRateKBS = L"TransferRateKBS" ;
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const static WCHAR* pVolumeName = L"VolumeName" ;
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/*****************************************************************************
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*
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* FUNCTION : CPCH_CDROM::EnumerateInstances
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*
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* DESCRIPTION : Returns all the instances of this class.
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*
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* INPUTS : A pointer to the MethodContext for communication with WinMgmt.
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* A long that contains the flags described in
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* IWbemServices::CreateInstanceEnumAsync. Note that the following
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* flags are handled by (and filtered out by) WinMgmt:
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* WBEM_FLAG_DEEP
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* WBEM_FLAG_SHALLOW
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* WBEM_FLAG_RETURN_IMMEDIATELY
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* WBEM_FLAG_FORWARD_ONLY
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* WBEM_FLAG_BIDIRECTIONAL
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*
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* RETURNS : WBEM_S_NO_ERROR if successful
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*
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* COMMENTS : TO DO: All instances on the machine should be returned here.
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* If there are no instances, return WBEM_S_NO_ERROR.
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* It is not an error to have no instances.
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*
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*****************************************************************************/
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HRESULT
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CPCH_CDROM::EnumerateInstances(
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MethodContext* pMethodContext,
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long lFlags
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)
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{
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TraceFunctEnter("CPCH_CDROM::EnumerateInstances");
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HRESULT hRes = WBEM_S_NO_ERROR;
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REFPTRCOLLECTION_POSITION posList;
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CComPtr<IEnumWbemClassObject> pEnumInst;
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IWbemClassObjectPtr pObj;
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ULONG ulRetVal;
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//
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// Get the date and time
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//
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SYSTEMTIME stUTCTime;
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GetSystemTime(&stUTCTime);
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//
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// Execute the query
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//
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hRes = ExecWQLQuery(&pEnumInst, CComBSTR("SELECT DeviceID, Drive, VolumeName, TransferRate, DriveIntegrity, Description, SCSITargetId, Manufacturer FROM Win32_CDROMDrive"));
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if (FAILED(hRes))
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goto END;
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//
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// enumerate the instances from win32_CodecFile
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//
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while (WBEM_S_NO_ERROR == pEnumInst->Next(WBEM_INFINITE, 1, &pObj, &ulRetVal))
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{
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// Create a new instance based on the passed-in MethodContext. If this fails,
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// we don't need to check for a null pointer because it throws an exception.
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CInstancePtr pInstance(CreateNewInstance(pMethodContext), false);
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CComVariant varValue;
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if (!pInstance->SetDateTime(pTimeStamp, WBEMTime(stUTCTime)))
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ErrorTrace(TRACE_ID, "SetDateTime on Timestamp Field failed.");
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if (!pInstance->SetCHString(pChange, L"Snapshot"))
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ErrorTrace(TRACE_ID, "SetCHString on Change Field failed.");
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(void)CopyProperty(pObj, L"DriveIntegrity", pInstance, pDataTransferIntegrity);
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(void)CopyProperty(pObj, L"Description", pInstance, pDescription);
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(void)CopyProperty(pObj, L"DeviceID", pInstance, pDeviceID);
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(void)CopyProperty(pObj, L"Drive", pInstance, pDriveLetter);
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(void)CopyProperty(pObj, L"Manufacturer", pInstance, pManufacturer);
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(void)CopyProperty(pObj, L"SCSITargetId", pInstance, pSCSITargetID);
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(void)CopyProperty(pObj, L"TransferRate", pInstance, pTransferRateKBS);
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(void)CopyProperty(pObj, L"VolumeName", pInstance, pVolumeName);
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hRes = pInstance->Commit();
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if (FAILED(hRes))
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ErrorTrace(TRACE_ID, "Commit on Instance failed.");
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}
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END :
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TraceFunctLeave();
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return hRes ;
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}
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