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838 lines
25 KiB
838 lines
25 KiB
//***************************************************************************
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//
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// Copyright (c) 1997-2001 Microsoft Corporation, All Rights Reserved
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//
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// FRQuery.cpp
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//
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// Purpose: Query functions
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//
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//***************************************************************************
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#include "precomp.h"
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#include <analyser.h>
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#include <assertbreak.h>
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#include <comdef.h>
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#include <FWStrings.h>
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#include <vector>
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#include <smartptr.h>
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#include <brodcast.h>
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#include <utils.h>
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#include "multiplat.h"
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CFrameworkQuery::CFrameworkQuery()
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{
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m_pLevel1RPNExpression = NULL;
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m_QueryType = eUnknown;
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m_bKeysOnly = false;
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m_IClass = NULL;
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m_lFlags = 0;
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}
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CFrameworkQuery::~CFrameworkQuery()
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{
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if (m_pLevel1RPNExpression)
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{
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delete m_pLevel1RPNExpression;
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}
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if (m_IClass)
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{
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m_IClass->Release();
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}
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}
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HRESULT CFrameworkQuery::Init(
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const BSTR bstrQueryFormat,
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const BSTR bstrQuery,
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long lFlags,
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CHString &sNamespace
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)
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{
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HRESULT hRes = WBEM_S_NO_ERROR;
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// Clear out any old values
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Reset();
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// Start setting our values
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m_lFlags = lFlags;
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m_bstrtClassName = L"";
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m_QueryType = eWQLCommand;
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m_sNamespace = sNamespace;
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// Check for the obvious
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if (_wcsicmp(bstrQueryFormat, IDS_WQL) != 0)
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{
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hRes = WBEM_E_INVALID_QUERY_TYPE;
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LogErrorMessage2(L"Invalid query type: %s", bstrQueryFormat);
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}
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if (hRes == WBEM_S_NO_ERROR)
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{
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// Construct the lex source
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// ========================
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CTextLexSource LexSource(bstrQuery);
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// Use the lex source to set up for parser
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// =======================================
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SQL1_Parser QueryParser(&LexSource);
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int ParseRetValue = QueryParser.Parse(&m_pLevel1RPNExpression);
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if( SQL1_Parser::SUCCESS == ParseRetValue)
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{
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// Store some common values
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m_bstrtClassName = m_pLevel1RPNExpression->bsClassName;
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m_sQuery = bstrQuery;
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// Build the Requested Properies Array (m_csaPropertiesRequired)
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if (m_pLevel1RPNExpression->nNumberOfProperties > 0)
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{
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// Populate the m_csaPropertiesRequired array with all the required properties
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CHString sPropertyName;
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// First add the elements of the Select clause
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for (DWORD x=0; x < m_pLevel1RPNExpression->nNumberOfProperties; x++)
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{
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sPropertyName = m_pLevel1RPNExpression->pbsRequestedPropertyNames[x];
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sPropertyName.MakeUpper();
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if (IsInList(m_csaPropertiesRequired, sPropertyName) == -1)
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{
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m_csaPropertiesRequired.Add(sPropertyName);
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}
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}
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// Then add the elements of the where clause
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for (x=0; x < m_pLevel1RPNExpression->nNumTokens; x++)
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{
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if (m_pLevel1RPNExpression->pArrayOfTokens[x].nTokenType == SQL_LEVEL_1_TOKEN::OP_EXPRESSION)
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{
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sPropertyName = m_pLevel1RPNExpression->pArrayOfTokens[x].pPropertyName;
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sPropertyName.MakeUpper();
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if (IsInList(m_csaPropertiesRequired, sPropertyName) == -1)
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{
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m_csaPropertiesRequired.Add(sPropertyName);
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}
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if (m_pLevel1RPNExpression->pArrayOfTokens[x].pPropName2 != NULL)
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{
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sPropertyName = m_pLevel1RPNExpression->pArrayOfTokens[x].pPropName2;
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sPropertyName.MakeUpper();
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if (IsInList(m_csaPropertiesRequired, sPropertyName) == -1)
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{
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m_csaPropertiesRequired.Add(sPropertyName);
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}
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}
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}
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}
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}
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}
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else
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{
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ASSERT_BREAK(FALSE);
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m_pLevel1RPNExpression = NULL;
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LogErrorMessage2(L"Can't parse query: %s", bstrQuery);
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hRes = WBEM_E_INVALID_QUERY;
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}
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}
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return hRes;
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}
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HRESULT CFrameworkQuery::Init(
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ParsedObjectPath *pParsedObjectPath,
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IWbemContext *pCtx,
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LPCWSTR lpwszClassName,
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CHString &sNamespace
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)
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{
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HRESULT hr = WBEM_S_NO_ERROR;
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variant_t vValue;
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// Clear out any old values
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Reset();
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// Start setting our values
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m_bstrtClassName = lpwszClassName;
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m_QueryType = eContextObject;
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m_lFlags = 0;
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m_sNamespace = sNamespace;
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// Check to see if get extensions are being used
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if ( (pCtx != NULL) &&
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(SUCCEEDED(pCtx->GetValue( L"__GET_EXTENSIONS", 0, &vValue))) &&
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(V_VT(&vValue) == VT_BOOL) &&
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(V_BOOL(&vValue) == VARIANT_TRUE) )
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{
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vValue.Clear();
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bool bKeysRequired = false;
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// Ok, did they ask for KeysOnly?
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// __GET_EXT_PROPERTIES and __GET_EXT_KEYS_ONLY are mutually exclusive. If they
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// specified KeysOnly, we'll go with that.
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if ( (SUCCEEDED(pCtx->GetValue( L"__GET_EXT_KEYS_ONLY", 0, &vValue))) &&
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(V_VT(&vValue) == VT_BOOL) &&
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(V_BOOL(&vValue) == VARIANT_TRUE) )
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{
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LogMessage(L"Recognized __GET_EXT_KEYS_ONLY");
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m_bKeysOnly = true;
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bKeysRequired = true;
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}
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else
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{
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vValue.Clear();
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if ( (SUCCEEDED(pCtx->GetValue( L"__GET_EXT_PROPERTIES", 0, &vValue))) &&
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(V_VT(&vValue) == (VT_ARRAY | VT_BSTR) ) &&
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( SafeArrayGetDim ( V_ARRAY(&vValue) ) == 1 ) )
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{
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LogMessage(L"Recognized __GET_EXT_PROPERTIES");
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// Ok, they sent us an arry of properties. Add them to m_csaPropertiesRequired.
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LONG lDimension = 1 ;
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LONG lLowerBound ;
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SafeArrayGetLBound ( V_ARRAY(&vValue) , lDimension , & lLowerBound ) ;
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LONG lUpperBound ;
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SafeArrayGetUBound ( V_ARRAY(&vValue) , lDimension , & lUpperBound ) ;
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CHString sPropertyName;
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for ( long lIndex = lLowerBound ; lIndex <= lUpperBound ; lIndex ++ )
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{
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BSTR bstrElement ;
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HRESULT t_Result = SafeArrayGetElement ( V_ARRAY(&vValue), &lIndex , & bstrElement ) ;
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if ( (t_Result == S_OK) &&
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(bstrElement != NULL) )
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{
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try
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{
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sPropertyName = bstrElement;
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}
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catch ( ... )
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{
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SysFreeString(bstrElement);
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throw;
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}
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SysFreeString(bstrElement);
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sPropertyName.MakeUpper();
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if (IsInList(m_csaPropertiesRequired, sPropertyName) == -1)
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{
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m_csaPropertiesRequired.Add(sPropertyName);
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}
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}
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}
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if ( (IsInList(m_csaPropertiesRequired, L"__RELPATH") != -1) ||
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(IsInList(m_csaPropertiesRequired, L"__PATH") != -1) )
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{
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bKeysRequired = true;
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}
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}
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}
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// If they specified KeysOnly or __RELPATH or __Path, we need to add the key properties
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// to the list.
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if (bKeysRequired)
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{
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if ((pParsedObjectPath != NULL) && (pParsedObjectPath->m_dwNumKeys > 0) && (pParsedObjectPath->m_paKeys[0]->m_pName != NULL))
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{
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CHString sPropertyName;
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for (DWORD x=0; x < pParsedObjectPath->m_dwNumKeys; x++)
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{
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sPropertyName = pParsedObjectPath->m_paKeys[x]->m_pName;
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sPropertyName.MakeUpper();
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if (IsInList(m_csaPropertiesRequired, sPropertyName) == -1)
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{
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m_csaPropertiesRequired.Add(sPropertyName);
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}
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}
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m_AddKeys = false;
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}
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else if ( (pParsedObjectPath != NULL) && (pParsedObjectPath->m_bSingletonObj) )
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{
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m_AddKeys = false;
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}
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else
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{
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// If they didn't give us a pParsedObjectPath or if the object path doesn't contain
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// the key property name, best we can do is add relpath. Hopefully they'll call
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// init2, and it will add the rest.
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if (IsInList(m_csaPropertiesRequired, L"__RELPATH") == -1)
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{
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m_csaPropertiesRequired.Add(L"__RELPATH");
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}
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}
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}
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}
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return hr;
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}
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// ===================================================================================================
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// Finds out if a particular field was requested by the query. Only
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// meaningful if we are in ExecQueryAsync and the query has been
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// sucessfully parsed.
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bool CFrameworkQuery::IsPropertyRequired(
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LPCWSTR propName
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)
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{
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bool bRet = AllPropertiesAreRequired();
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if (!bRet)
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{
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CHString sPropName(propName);
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sPropName.MakeUpper();
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bRet = (IsInList(m_csaPropertiesRequired, sPropName) != -1);
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}
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return bRet;
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}
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// Given a property name, it will return all the values
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// that the query requests in a CHStringArray.
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// Select * from win32_directory where drive = "C:" GetValuesForProp(L"Drive") -> C:
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// Where Drive = "C:" or Drive = "D:" GetValuesForProp(L"Drive") -> C:, D:
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// Where Path = "\DOS" GetValuesForProp(L"Drive") -> (empty)
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// Where Drive <> "C:" GetValuesForProp(L"Drive") -> (empty)
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HRESULT CFrameworkQuery::GetValuesForProp(
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LPCWSTR wszPropName,
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CHStringArray& achNames
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)
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{
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HRESULT hr = WBEM_S_NO_ERROR;
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if (wszPropName && (m_pLevel1RPNExpression != NULL))
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{
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hr = CQueryAnalyser::GetValuesForProp(m_pLevel1RPNExpression, wszPropName, achNames);
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if (SUCCEEDED(hr))
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{
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// If this is a reference property, we need to normalize the names to a common form
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// so the removal of duplicates works correctly.
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if (IsReference(wszPropName))
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{
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// Get the current computer name
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CHString sOutPath, sComputerName;
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DWORD dwBufferLength = MAX_COMPUTERNAME_LENGTH + 1;
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FRGetComputerName(sComputerName.GetBuffer( dwBufferLength ), &dwBufferLength);
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sComputerName.ReleaseBuffer();
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if (sComputerName.IsEmpty())
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{
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sComputerName = L"DEFAULT";
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}
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DWORD dwRet = e_OK;
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// Normalize the path names. Try leaving the property names alone
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for (int x = 0; x < achNames.GetSize(); x++)
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{
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// If we failed to parse the path, or if the namespace isn't our namespace, delete
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// the entry.
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dwRet = NormalizePath(achNames[x], sComputerName, GetNamespace(), 0, sOutPath);
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if (dwRet == e_OK)
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{
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achNames[x] = sOutPath;
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}
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else if (dwRet == e_NullName)
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{
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break;
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}
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else
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{
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achNames.RemoveAt(x);
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x--;
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}
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}
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// If the key property names of any of the values were null, we have to set them all
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// to null.
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if (dwRet == e_NullName)
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{
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// Normalize the path names
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for (int x = 0; x < achNames.GetSize(); x++)
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{
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// If we failed to parse the path, or if the namespace isn't our namespace, delete
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// the entry.
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dwRet = NormalizePath(achNames[x], sComputerName, GetNamespace(), NORMALIZE_NULL, sOutPath);
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if (dwRet == e_OK)
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{
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achNames[x] = sOutPath;
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}
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else
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{
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achNames.RemoveAt(x);
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x--;
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}
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}
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}
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}
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// Remove duplicates
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for (int x = 1; x < achNames.GetSize(); x++)
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{
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for (int y = 0; y < x; y++)
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{
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if (achNames[y].CompareNoCase(achNames[x]) == 0)
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{
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achNames.RemoveAt(x);
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x--;
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}
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}
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}
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}
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else
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{
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achNames.RemoveAll();
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if (hr == WBEMESS_E_REGISTRATION_TOO_BROAD)
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{
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hr = WBEM_S_NO_ERROR;
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}
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}
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}
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else
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{
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ASSERT_BREAK(FALSE);
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achNames.RemoveAll();
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hr = WBEM_E_FAILED;
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}
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return hr;
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}
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// Here's an overloaded version in case client wants to pass in a vector of _bstr_t's
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HRESULT CFrameworkQuery::GetValuesForProp(
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LPCWSTR wszPropName,
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std::vector<_bstr_t>& vectorNames
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)
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{
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HRESULT hr = WBEM_S_NO_ERROR;
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if (wszPropName && (m_pLevel1RPNExpression != NULL) )
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{
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hr = CQueryAnalyser::GetValuesForProp(m_pLevel1RPNExpression, wszPropName, vectorNames);
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if (SUCCEEDED(hr))
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{
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// If this is a reference property, we need to normalize the names to a common form
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// so the removal of duplicates works correctly.
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if (IsReference(wszPropName))
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{
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// Get the current computer name
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CHString sOutPath, sComputerName;
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DWORD dwBufferLength = MAX_COMPUTERNAME_LENGTH + 1;
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FRGetComputerName(sComputerName.GetBuffer( dwBufferLength ), &dwBufferLength);
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sComputerName.ReleaseBuffer();
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if (sComputerName.IsEmpty())
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{
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sComputerName = L"DEFAULT";
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}
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DWORD dwRet = e_OK;
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// Normalize the path names. Try leaving the property names alone
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for (int x = 0; x < vectorNames.size(); x++)
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{
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// If we failed to parse the path, or if the namespace isn't our namespace, delete
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// the entry.
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dwRet = NormalizePath(vectorNames[x], sComputerName, GetNamespace(), 0, sOutPath);
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if (dwRet == e_OK)
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{
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vectorNames[x] = sOutPath;
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}
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else if (dwRet == e_NullName)
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{
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break;
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}
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else
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{
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vectorNames.erase(vectorNames.begin() + x);
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x--;
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}
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}
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// If the key property names of any of the values were null, we have to set them all
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// to null.
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if (dwRet == e_NullName)
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{
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for (int x = 0; x < vectorNames.size(); x++)
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{
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// If we failed to parse the path, or if the namespace isn't our namespace, delete
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// the entry.
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dwRet = NormalizePath(vectorNames[x], sComputerName, GetNamespace(), NORMALIZE_NULL, sOutPath);
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if (dwRet == e_OK)
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{
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vectorNames[x] = sOutPath;
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}
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else
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{
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vectorNames.erase(vectorNames.begin() + x);
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x--;
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}
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}
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}
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}
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// Remove duplicates
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for (int x = 1; x < vectorNames.size(); x++)
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{
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for (int y = 0; y < x; y++)
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{
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if (_wcsicmp(vectorNames[y], vectorNames[x]) == 0)
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{
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vectorNames.erase(vectorNames.begin() + x);
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x--;
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}
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}
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}
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}
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else
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{
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vectorNames.clear();
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if (hr == WBEMESS_E_REGISTRATION_TOO_BROAD)
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{
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hr = WBEM_S_NO_ERROR;
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}
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}
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}
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else
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{
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ASSERT_BREAK(FALSE);
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vectorNames.clear();
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hr = WBEM_E_FAILED;
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}
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return hr;
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}
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// Returns a list of all the properties specified in the select statement.
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// If * is specified as one of the fields, it is returned in the same way as all
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// other properties.
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void CFrameworkQuery::GetRequiredProperties(
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CHStringArray &saProperties
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)
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{
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saProperties.RemoveAll();
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saProperties.Copy(m_csaPropertiesRequired);
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}
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// Initializes the KeysOnly data member. Should never be called by users.
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void CFrameworkQuery::Init2(
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IWbemClassObject *IClass
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)
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{
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// Store IClass object for use in GetValuesForProp
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m_IClass = IClass;
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m_IClass->AddRef();
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|
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// If KeysOnly get set somewhere else, or if we already know all properties are requried
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// there's no point in looking for non-key properties.
|
|
if (!m_bKeysOnly && !AllPropertiesAreRequired())
|
|
{
|
|
// First, we are going to correctly set the m_bKeysOnly member
|
|
IWbemQualifierSetPtr pQualSet;
|
|
|
|
HRESULT hr;
|
|
DWORD dwSize = m_csaPropertiesRequired.GetSize();
|
|
|
|
m_bKeysOnly = true;
|
|
|
|
for (DWORD x=0; x < dwSize; x++)
|
|
{
|
|
if (m_csaPropertiesRequired[x].Left(2) != L"__")
|
|
{
|
|
// If we fail here, it could be due to an invalid property name specified in the query.
|
|
if (SUCCEEDED(hr = IClass->GetPropertyQualifierSet( m_csaPropertiesRequired[x] , &pQualSet)))
|
|
{
|
|
hr = pQualSet->Get( L"Key", 0, NULL, NULL);
|
|
if (hr == WBEM_E_NOT_FOUND)
|
|
{
|
|
m_bKeysOnly = false;
|
|
break;
|
|
}
|
|
else if (FAILED(hr))
|
|
{
|
|
LogErrorMessage3(L"Can't Get 'key' on %s(%x)", (LPCWSTR)m_csaPropertiesRequired[x], hr);
|
|
ASSERT_BREAK(FALSE);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (hr == WBEM_E_NOT_FOUND)
|
|
{
|
|
// This just means there are properties in the per-property list that don't exist
|
|
hr = WBEM_S_NO_ERROR;
|
|
}
|
|
else
|
|
{
|
|
LogErrorMessage3(L"Can't get property GetPropertyQualifierSet on %s(%x)", (LPCWSTR)m_csaPropertiesRequired[x], hr);
|
|
ASSERT_BREAK(FALSE);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Second, if they specified a property list, and one of the properties was __path or __relpath,
|
|
// then we need to add the name of the actual key properties to the list. Unless we added them
|
|
// somewhere else.
|
|
if ( m_AddKeys &&
|
|
!AllPropertiesAreRequired() &&
|
|
( (IsInList(m_csaPropertiesRequired, L"__RELPATH") != -1) ||
|
|
(IsInList(m_csaPropertiesRequired, L"__PATH") != -1) ) )
|
|
{
|
|
SAFEARRAY *pKeyNames = NULL;
|
|
HRESULT hr;
|
|
|
|
// Get the keys for the class
|
|
if (SUCCEEDED(hr = IClass->GetNames(NULL, WBEM_FLAG_KEYS_ONLY, NULL, &pKeyNames)))
|
|
{
|
|
try
|
|
{
|
|
BSTR bstrName = NULL ;
|
|
CHString sKeyName;
|
|
LONG lLBound, lUBound;
|
|
|
|
SafeArrayGetLBound(pKeyNames, 1, &lLBound);
|
|
SafeArrayGetUBound(pKeyNames, 1, &lUBound);
|
|
|
|
// Walk the key properties, and add any properties that
|
|
// are not already in the list
|
|
for (long i = lLBound; i <= lUBound; i++)
|
|
{
|
|
if (SUCCEEDED(SafeArrayGetElement( pKeyNames, &i, &bstrName )))
|
|
{
|
|
try
|
|
{
|
|
sKeyName = bstrName;
|
|
}
|
|
catch ( ... )
|
|
{
|
|
SysFreeString(bstrName);
|
|
throw;
|
|
}
|
|
|
|
SysFreeString(bstrName);
|
|
sKeyName.MakeUpper();
|
|
|
|
if (IsInList(m_csaPropertiesRequired, sKeyName) == -1)
|
|
{
|
|
m_csaPropertiesRequired.Add(sKeyName);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
throw CHeap_Exception ( CHeap_Exception :: E_ALLOCATION_ERROR ) ;
|
|
}
|
|
}
|
|
}
|
|
catch ( ... )
|
|
{
|
|
SafeArrayDestroy(pKeyNames);
|
|
throw;
|
|
}
|
|
|
|
SafeArrayDestroy(pKeyNames);
|
|
}
|
|
else
|
|
{
|
|
LogErrorMessage2(L"Failed to Get keys", hr);
|
|
}
|
|
}
|
|
}
|
|
|
|
const CHString &CFrameworkQuery::GetQuery()
|
|
{
|
|
if (m_QueryType == eContextObject)
|
|
{
|
|
if (m_sQuery.IsEmpty())
|
|
{
|
|
if (AllPropertiesAreRequired())
|
|
{
|
|
bstr_t t_Str ( GetQueryClassName() , FALSE) ;
|
|
|
|
m_sQuery.Format(L"SELECT * FROM %s", (LPCWSTR)t_Str );
|
|
}
|
|
else if (KeysOnly())
|
|
{
|
|
bstr_t t_Str ( GetQueryClassName() , FALSE) ;
|
|
|
|
m_sQuery.Format(L"SELECT __RELPATH FROM %s", (LPCWSTR)t_Str );
|
|
}
|
|
else
|
|
{
|
|
m_sQuery = L"SELECT " + m_csaPropertiesRequired[0];
|
|
|
|
for (DWORD x=1; x < m_csaPropertiesRequired.GetSize(); x++)
|
|
{
|
|
m_sQuery += L", ";
|
|
m_sQuery += m_csaPropertiesRequired[x];
|
|
}
|
|
m_sQuery += L" FROM ";
|
|
|
|
bstr_t t_Str ( GetQueryClassName() , FALSE) ;
|
|
|
|
m_sQuery += t_Str ;
|
|
}
|
|
}
|
|
}
|
|
|
|
return m_sQuery;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION : IsInList
|
|
*
|
|
* DESCRIPTION : Checks to see if a specified element is in the list
|
|
*
|
|
* INPUTS : Array to scan, and element
|
|
*
|
|
* OUTPUTS :
|
|
*
|
|
* RETURNS : -1 if not in list, else zero based element number
|
|
*
|
|
* COMMENTS : This routine does a CASE SENSITIVE compare
|
|
*
|
|
*****************************************************************************/
|
|
DWORD CFrameworkQuery::IsInList(
|
|
|
|
const CHStringArray &csaArray,
|
|
LPCWSTR pwszValue
|
|
)
|
|
{
|
|
DWORD dwSize = csaArray.GetSize();
|
|
|
|
for (DWORD x=0; x < dwSize; x++)
|
|
{
|
|
// Note this is a CASE SENSITIVE compare
|
|
if (wcscmp(csaArray[x], pwszValue) == 0)
|
|
{
|
|
return x;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION : Reset
|
|
*
|
|
* DESCRIPTION : Zeros out class data members
|
|
*
|
|
* INPUTS :
|
|
*
|
|
* OUTPUTS :
|
|
*
|
|
* RETURNS :
|
|
*
|
|
* COMMENTS :
|
|
*
|
|
*****************************************************************************/
|
|
void CFrameworkQuery::Reset(void)
|
|
{
|
|
// Clear out any old values
|
|
m_sQuery.Empty();
|
|
m_sQueryFormat.Empty();
|
|
m_bKeysOnly = false;
|
|
m_AddKeys = true;
|
|
m_csaPropertiesRequired.RemoveAll();
|
|
if (m_pLevel1RPNExpression)
|
|
{
|
|
delete m_pLevel1RPNExpression;
|
|
m_pLevel1RPNExpression = NULL;
|
|
}
|
|
if (m_IClass)
|
|
{
|
|
m_IClass->Release();
|
|
m_IClass = NULL;
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION : IsReference
|
|
*
|
|
* DESCRIPTION : Determines whether the specified property is a reference
|
|
* property.
|
|
*
|
|
* INPUTS :
|
|
*
|
|
* OUTPUTS :
|
|
*
|
|
* RETURNS :
|
|
*
|
|
* COMMENTS :
|
|
*
|
|
*****************************************************************************/
|
|
BOOL CFrameworkQuery::IsReference(
|
|
|
|
LPCWSTR lpwszPropertyName
|
|
)
|
|
{
|
|
BOOL bRet = FALSE;
|
|
|
|
if (m_IClass != NULL)
|
|
{
|
|
CIMTYPE ctCimType;
|
|
if (SUCCEEDED(m_IClass->Get(lpwszPropertyName, 0, NULL, &ctCimType, NULL)))
|
|
{
|
|
bRet = ctCimType == CIM_REFERENCE;
|
|
}
|
|
}
|
|
|
|
return bRet;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* FUNCTION : GetNamespace
|
|
*
|
|
* DESCRIPTION : Determines whether the specified property is a reference
|
|
* property.
|
|
*
|
|
* INPUTS :
|
|
*
|
|
* OUTPUTS :
|
|
*
|
|
* RETURNS :
|
|
*
|
|
* COMMENTS :
|
|
*
|
|
*****************************************************************************/
|
|
const CHString &CFrameworkQuery::GetNamespace()
|
|
{
|
|
return m_sNamespace;
|
|
};
|