327 lines
8.6 KiB
C++
327 lines
8.6 KiB
C++
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// Copyright (c) Microsoft. All rights reserved.
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//
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// This is unpublished source code of Microsoft.
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// The copyright notice above does not evidence any
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// actual or intended publication of such source code.
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// OneLiner : Implementation of MWmiInstance
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// DevUnit : wlbstest
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// Author : Murtaza Hakim
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// include files
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#include "MWmiInstance.h"
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#include "MTrace.h"
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#include "MWmiError.h"
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#include "WTokens.h"
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#include <iostream>
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using namespace std;
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// default constructor is purposely left undefined. No one should use it.
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// constructor
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//
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MWmiInstance::MWmiInstance(
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const _bstr_t& objectName,
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const _bstr_t& path,
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IWbemLocatorPtr pwl,
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IWbemServicesPtr pws )
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:
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_objectName( objectName ),
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_path( path ),
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_pwl( pwl ),
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_pws( pws )
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{
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TRACE(MTrace::INFO, L"mwmiinstance constructor\n" );
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}
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// copy constructor
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//
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MWmiInstance::MWmiInstance( const MWmiInstance& obj)
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:
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_path( obj._path ),
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_pwl( obj._pwl ),
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_pws( obj._pws ),
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_objectName( obj._objectName )
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{
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TRACE(MTrace::INFO, L"mwmiinstance copy constructor\n" );
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}
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// assignment operator
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//
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MWmiInstance&
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MWmiInstance::operator=( const MWmiInstance& rhs )
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{
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_path = rhs._path;
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_pwl = rhs._pwl;
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_pws = rhs._pws;
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_objectName = rhs._objectName;
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TRACE(MTrace::INFO, L"mwmiinstance assignment operator\n" );
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return *this;
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}
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// destructor
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MWmiInstance::~MWmiInstance()
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{
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TRACE(MTrace::INFO, L"mwmiinstance destructor\n" );
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}
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// runMethod
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MWmiInstance::MWmiInstance_Error
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MWmiInstance::runMethod(
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const _bstr_t& methodToRun,
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const vector<MWmiParameter *>& inputParameters,
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vector<MWmiParameter *>& outputParameters
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)
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{
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HRESULT hr;
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_variant_t v_retVal;
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IWbemClassObjectPtr pwcoClass;
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IWbemClassObjectPtr pwcoOutput;
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IWbemClassObjectPtr pwcoInput;
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IWbemClassObjectPtr pwcoInputInstance;
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hr = _pws->GetObject( _objectName,
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0,
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NULL,
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&pwcoClass,
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NULL );
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if( FAILED(hr) )
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{
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TRACE(MTrace::SEVERE_ERROR, L"IWbemServices::GetObject failure\n");
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throw _com_error( hr );
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}
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// check if any input parameters specified.
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if( inputParameters.size() != 0 )
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{
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hr = pwcoClass->GetMethod( methodToRun,
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0,
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&pwcoInput,
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NULL );
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if( FAILED( hr) )
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{
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TRACE(MTrace::SEVERE_ERROR, L"IWbemClassObject::GetMethod failure\n");
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throw _com_error( hr );
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}
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hr = pwcoInput->SpawnInstance( 0, &pwcoInputInstance );
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if( FAILED( hr) )
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{
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TRACE( MTrace::SEVERE_ERROR, "IWbemClassObject::SpawnInstance failure. Unable to spawn instance.\n" );
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throw _com_error( hr );
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}
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for( int i = 0; i < inputParameters.size(); ++i )
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{
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hr = pwcoInputInstance->Put( inputParameters[i]->getName(),
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0,
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&(inputParameters[i]->getValue() ),
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0 );
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if( FAILED( hr ) )
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{
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TRACE(MTrace::SEVERE_ERROR, L"IWbemClassObject::Put failure\n");
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throw _com_error( hr );
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}
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}
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}
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// execute method.
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hr = _pws->ExecMethod( _path,
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methodToRun,
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0,
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NULL,
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pwcoInputInstance,
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&pwcoOutput,
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NULL);
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if( FAILED( hr) )
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{
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TRACE(MTrace::SEVERE_ERROR, L"IWbemServices::ExecMethod failure\n");
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throw _com_error( hr );
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}
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// get output parameters
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for( int i = 0; i < outputParameters.size(); ++i )
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{
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hr = pwcoOutput->Get( outputParameters[i]->getName(),
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0,
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&v_retVal,
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NULL,
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NULL );
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if( FAILED( hr) )
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{
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TRACE(MTrace::SEVERE_ERROR, L"IWbemClassObject::Get failure\n");
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throw _com_error( hr );
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}
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outputParameters[i]->setValue( v_retVal );
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v_retVal.Clear();
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}
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return MWmiInstance_SUCCESS;
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}
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// getParameters
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//
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MWmiInstance::MWmiInstance_Error
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MWmiInstance::getParameters( vector<MWmiParameter *>& parametersToGet )
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{
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HRESULT hr;
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IEnumWbemClassObjectPtr pewco;
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IWbemClassObjectPtr pwco;
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unsigned long count;
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_variant_t v_path;
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bool found;
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CIMTYPE vtype;
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_variant_t v_value;
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// get object corresponding to this path.
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hr = _pws->GetObject( _path,
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WBEM_FLAG_RETURN_WBEM_COMPLETE,
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NULL,
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&pwco,
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NULL );
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if( hr == 0x8004100c || hr == 0x8004100a )
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{
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TRACE(MTrace::INFO, L"as this is not supported, trying different mechanism\n");
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hr = _pws->CreateInstanceEnum( _objectName,
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WBEM_FLAG_RETURN_IMMEDIATELY,
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NULL,
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&pewco );
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if ( FAILED(hr))
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{
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TRACE(MTrace::SEVERE_ERROR, L"IWbemServices::CreateInstanceEnum failure\n");
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throw _com_error( hr );
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}
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// there may be multiple instances.
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count = 1;
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while ( (hr = pewco->Next( INFINITE,
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1,
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&pwco,
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&count ) ) == S_OK )
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{
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hr = pwco->Get( _bstr_t(L"__RELPATH"), 0, &v_path, NULL, NULL );
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if( FAILED(hr) )
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{
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TRACE(MTrace::SEVERE_ERROR, L"IWbemServices::CreateInstanceEnum failure\n");
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throw _com_error( hr );
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}
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if( _bstr_t( v_path ) == _path )
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{
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// required instance found
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found = true;
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v_path.Clear();
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break;
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}
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count = 1;
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v_path.Clear();
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}
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if( found == false )
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{
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TRACE( MTrace::SEVERE_ERROR, "unable to find instance with path specified\n");
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throw _com_error( WBEM_E_NOT_FOUND );
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}
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}
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else if ( FAILED(hr) )
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{
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TRACE( MTrace::SEVERE_ERROR, L"IWbemServices::GetObject failure\n");
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throw _com_error( hr );
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}
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for( int i = 0; i < parametersToGet.size(); ++i )
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{
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hr = pwco->Get( parametersToGet[i]->getName(),
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0,
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&v_value,
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&vtype,
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NULL );
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if( FAILED( hr ) )
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{
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TRACE( MTrace::SEVERE_ERROR, "IWbemClassObject::Get failure\n");
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throw _com_error(hr);
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}
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parametersToGet[i]->setValue( v_value );
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v_value.Clear();
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}
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return MWmiInstance_SUCCESS;
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}
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// setParameters
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//
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MWmiInstance::MWmiInstance_Error
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MWmiInstance::setParameters( const vector<MWmiParameter *>& parametersToSet )
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{
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HRESULT hr;
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IWbemClassObjectPtr pwco = NULL;
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_variant_t v_value;
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// get object corresponding to this path.
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hr = _pws->GetObject( _path,
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WBEM_FLAG_RETURN_WBEM_COMPLETE,
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NULL,
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&pwco,
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NULL );
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if( FAILED( hr ) )
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{
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TRACE( MTrace::SEVERE_ERROR, "IWbemServices::GetObject failure\n");
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throw _com_error( hr );
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}
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for( int i = 0; i < parametersToSet.size(); ++i )
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{
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v_value = parametersToSet[i]->getValue();
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hr = pwco->Put( parametersToSet[i]->getName(),
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0,
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&v_value,
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NULL );
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if( FAILED( hr ) )
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{
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TRACE( MTrace::SEVERE_ERROR, "IWbemClassObject::Get failure\n");
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throw _com_error( hr );
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}
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v_value.Clear();
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}
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hr = _pws->PutInstance( pwco,
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WBEM_FLAG_UPDATE_ONLY,
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NULL,
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NULL );
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if( FAILED(hr) )
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{
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TRACE( MTrace::SEVERE_ERROR, "IWbemServices::PutInstance failure\n");
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throw _com_error( hr );
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}
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return MWmiInstance_SUCCESS;
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}
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