436 lines
12 KiB
C++
436 lines
12 KiB
C++
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/*++
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Copyright (C) 1999-2000 Microsoft Corporation
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Module Name:
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PropBag.cpp
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Abstract:
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Implementation of the private IPropertyBag interface used by
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the Performance Log Manager.
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--*/
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#include "logman.h"
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#include "stdafx.h"
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#include "unihelpr.h"
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#include "strings.h"
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#include "propbag.h"
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#define MAX_GUID_STRING_LENGTH 39
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/*
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* CPropertyBag::CPropertyBag
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*
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* Purpose:
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* Constructor.
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*
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* Return Value:
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*/
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CPropertyBag::CPropertyBag ( void )
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: m_pszData ( NULL ),
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m_dwCurrentDataLength ( 0 ),
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m_plistData ( NULL )
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{
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return;
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}
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/*
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* CPropertyBag::~CPropertyBag
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*
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* Purpose:
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* Destructor.
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*
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* Return Value:
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*/
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CPropertyBag::~CPropertyBag ( void )
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{
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if ( NULL != m_pszData ) {
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delete m_pszData;
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}
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while ( NULL != m_plistData ) {
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PPARAM_DATA pData = DataListRemoveHead();
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VariantClear ( &pData->vValue );
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delete pData;
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}
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return;
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}
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/*
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* CPropertyBag::Read
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*
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* Purpose:
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*
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* This function is called to read a property from the property bag.
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*
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* Parameters:
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* pszPropName Pointer to name of property to be read
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* pVar Pointer to the VARIANT to receive the property value
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* pIErrorLog Pointer to the caller's error log
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*/
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HRESULT
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CPropertyBag::Read (
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LPCWSTR pszPropName, //Pointer to the property to be read
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VARIANT* pVar ) //Pointer to the VARIANT to receive the
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//property value
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{
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HRESULT hr = NOERROR;
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PPARAM_DATA pData = NULL;
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assert ( NULL != pszPropName );
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assert ( NULL != pVar );
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if ( NULL == pszPropName )
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return ResultFromScode ( E_POINTER );
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if ( NULL == pVar )
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return ResultFromScode ( E_POINTER );
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//Read the specified data into the passed variant.
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pData = FindProperty ( pszPropName );
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if ( NULL != pData ) {
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hr = VariantChangeType ( pVar, &pData->vValue, NULL, pVar->vt );
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} else {
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hr = E_INVALIDARG;
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}
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return hr;
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}
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/*
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* CPropertyBag::Write
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*
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* Purpose:
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*
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* This function is called to write a property to the property bag.
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*
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* Parameters:
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* pszPropName Pointer to name of property to be written
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* pVar Pointer to the VARIANT containing the property value
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*/
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HRESULT
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CPropertyBag::Write (
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LPCWSTR pszPropName, //Pointer to the property to be written
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VARIANT* pVar ) //Pointer to the VARIANT containing the
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//property value and type
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{
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HRESULT hr = S_OK;
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VARIANT vValueBstr;
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DWORD dwNameLength;
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DWORD dwDataLength;
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static DWORD dwDelimiterLength = 0;
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static DWORD dwParamNameLength = 0;
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static DWORD dwEolTagLength = 0;
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static DWORD dwValueTagLength = 0;
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HRESULT hrConvert;
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LPWSTR pszNextField = m_pszData;
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DWORD dwCurrentDataUsedLength;
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assert ( NULL != pszPropName );
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assert ( NULL != pVar );
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if ( NULL == pszPropName )
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return ResultFromScode ( E_POINTER );
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if ( NULL == pVar )
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return ResultFromScode ( E_POINTER );
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USES_CONVERSION
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VariantInit ( &vValueBstr );
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hrConvert = VariantChangeType ( &vValueBstr, pVar, NULL, VT_BSTR );
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// All length values calculated number of WCHARs.
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if ( 0 == dwDelimiterLength ) {
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// Initialize static values
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dwParamNameLength = lstrlenW (cwszHtmlParamTag);
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dwValueTagLength = lstrlenW ( cwszHtmlValueTag );
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dwEolTagLength = lstrlenW ( cwszHtmlValueEolTag );
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dwDelimiterLength = dwParamNameLength + dwValueTagLength + dwEolTagLength;
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}
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if ( SUCCEEDED ( hr ) ) {
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hr = E_NOTIMPL;
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// Todo: Implement
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dwNameLength = lstrlenW ( pszPropName );
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dwDataLength = lstrlenW ( vValueBstr.bstrVal );
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dwCurrentDataUsedLength = lstrlenW ( m_pszData );
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// Add 1 to size calculation for NULL buffer terminator.
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if ( m_dwCurrentDataLength
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< dwCurrentDataUsedLength + dwNameLength + dwDataLength + dwDelimiterLength + 1 ) {
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LPWSTR pszNewBuffer;
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if ( 0 == m_dwCurrentDataLength ) {
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m_dwCurrentDataLength += eDefaultBufferLength;
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} else {
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m_dwCurrentDataLength *= 2;
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}
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pszNewBuffer = new WCHAR[m_dwCurrentDataLength];
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if ( NULL == pszNewBuffer )
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return E_OUTOFMEMORY;
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if ( NULL != m_pszData ) {
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memcpy ( pszNewBuffer, m_pszData, dwCurrentDataUsedLength * sizeof(WCHAR) );
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delete m_pszData;
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}
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m_pszData = pszNewBuffer;
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}
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// Build the new string and add it to the current data.
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pszNextField = m_pszData + dwCurrentDataUsedLength;
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memcpy ( pszNextField, cwszHtmlParamTag, dwParamNameLength * sizeof(WCHAR) );
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pszNextField += dwParamNameLength;
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memcpy ( pszNextField, pszPropName, dwNameLength * sizeof(WCHAR) );
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pszNextField += dwNameLength;
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memcpy ( pszNextField, cwszHtmlValueTag, dwValueTagLength * sizeof(WCHAR) );
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pszNextField += dwValueTagLength;
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memcpy ( pszNextField, W2T(vValueBstr.bstrVal), dwDataLength * sizeof(WCHAR) );
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pszNextField += dwDataLength;
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memcpy ( pszNextField, cwszHtmlValueEolTag, dwEolTagLength * sizeof(WCHAR) );
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pszNextField += dwEolTagLength;
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lstrcpyW ( pszNextField, cwszNull );
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}
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return hr;
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}
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/*
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* CPropertyBag::GetData
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*
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* Purpose:
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* Return pointer to the data buffer.
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*
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* Return Value:
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* Pointer to the data buffer.
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*/
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LPWSTR
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CPropertyBag::GetData ( void )
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{
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return m_pszData;
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}
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/*
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* CPropertyBag::LoadData
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*
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* Purpose:
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* Load data from the supplied buffer into internal data structures.
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*
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* Return Value:
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* Status.
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*/
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DWORD
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CPropertyBag::LoadData (
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LPCTSTR pszData,
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LPTSTR& rpszNextData )
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{
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DWORD dwStatus = ERROR_SUCCESS;
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LPWSTR szNextEoo = NULL;
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BOOL bUnicode = TRUE;
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USES_CONVERSION
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assert ( NULL != pszData );
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rpszNextData = NULL;
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if ( NULL != pszData ) {
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LPWSTR pszDataW = NULL;
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LPWSTR pszDataAllocW = NULL;
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LPWSTR pszCurrentPos;
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LPWSTR pszGuid;
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// Unicode search: Begin the search after the first instance
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// of the System Monitor class id.
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pszGuid = wcstok ( const_cast<LPWSTR>(cwszHtmlObjectClassId), L"{} " );
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pszCurrentPos = wcsstr( (LPWSTR) pszData, pszGuid );
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// Handle wide vs ansi.
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if ( NULL != pszCurrentPos ) {
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pszDataW = (LPWSTR)pszData;
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bUnicode = TRUE;
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} else {
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// Check for ANSI version:
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LPSTR pszGuidA = NULL;
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LPSTR pszCurrentPosA = NULL;
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LPSTR pszDataA = (CHAR*) pszData;
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pszGuidA = W2A( pszGuid );
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pszCurrentPosA = strstr ( pszDataA, pszGuidA );
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if ( NULL != pszCurrentPosA ) {
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pszDataAllocW = A2W ( pszDataA );
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pszDataW = pszDataAllocW;
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bUnicode = FALSE;
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pszCurrentPos = wcsstr(pszDataW, pszGuid );
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}
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}
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if ( NULL != pszCurrentPos ) {
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LPWSTR szEoo;
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// End of object is the first object footer tag after the first sysmon
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// class id found. If multiple objects in the data block, only parse the first sysmon.
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szEoo = wcsstr(pszCurrentPos, cwszHtmlObjectFooter );
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if ( NULL != szEoo ) {
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// Find first parameter tag.
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pszCurrentPos = wcsstr(pszCurrentPos, cwszHtmlParamSearchTag );
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while ( NULL != pszCurrentPos && pszCurrentPos < szEoo ) {
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LPWSTR pszNextPos;
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INT lStrLength;
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PPARAM_DATA pParamData;
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LPWSTR szTemp;
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// Store parameter/property name.
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// Find one past first quote.
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pszCurrentPos = wcsstr(pszCurrentPos, cwszQuote ) + 1;
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// The param name is between first and second quote.
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pszNextPos = wcsstr(pszCurrentPos, cwszQuote );
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lStrLength = ( (INT)((UINT_PTR)pszNextPos - (UINT_PTR)pszCurrentPos) ) / sizeof ( WCHAR ) ;
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pParamData = new PARAM_DATA;
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if ( NULL != pParamData ) {
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pParamData->pNextParam = NULL;
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VariantInit ( &pParamData->vValue );
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pParamData->vValue.vt = VT_BSTR;
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} else {
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dwStatus = ERROR_OUTOFMEMORY;
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break;
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}
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wcsncpy ( pParamData->pszPropertyName, pszCurrentPos, lStrLength );
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pParamData->pszPropertyName[lStrLength] = TEXT ('\0');
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// Find value tag and store parameter/property value.
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// Find value tag
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pszCurrentPos = wcsstr ( pszCurrentPos, cwszHtmlValueSearchTag );
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// Find one past first quote
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pszCurrentPos = wcsstr ( pszCurrentPos, cwszQuote ) + 1;
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// The value is between first and second quote.
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pszNextPos = wcsstr ( pszCurrentPos, cwszQuote );
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lStrLength = ( (INT)((UINT_PTR)pszNextPos - (UINT_PTR)pszCurrentPos) ) / sizeof ( WCHAR );
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szTemp = new WCHAR[lStrLength+1];
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if (szTemp != NULL) {
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wcsncpy ( szTemp, pszCurrentPos, lStrLength );
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szTemp[lStrLength] = TEXT('\0');
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pParamData->vValue.bstrVal =
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SysAllocString ( szTemp );
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delete szTemp;
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DataListAddHead ( pParamData );
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// Find next parameter/property tag.
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pszCurrentPos = wcsstr(pszCurrentPos, cwszHtmlParamSearchTag );
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} else {
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delete pParamData;
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dwStatus = ERROR_OUTOFMEMORY;
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break;
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}
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} // While parameter tags exist for a single object.
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// Search for next object
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// Start after current object footer
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szEoo += lstrlenW ( cwszHtmlObjectFooter );
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szNextEoo = wcsstr(szEoo, cwszHtmlObjectFooter);
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// Successful. Return pointer to end of the current object, or NULL if all
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// objects have been processed.
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if ( NULL != szNextEoo ) {
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if ( bUnicode ) {
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rpszNextData = (LPTSTR)szEoo;
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} else {
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INT lStrLength;
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lStrLength = ( (INT)((UINT_PTR)szEoo - (UINT_PTR)pszDataW) ) / sizeof ( WCHAR ) ;
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// Add string length to original buffer pointer
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rpszNextData = (LPTSTR)((LPSTR)pszData + lStrLength);
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}
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}
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} else {
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dwStatus = LOGMAN_NO_SYSMON_OBJECT;
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}
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} else {
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dwStatus = LOGMAN_NO_SYSMON_OBJECT;
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}
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} else {
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dwStatus = ERROR_INVALID_PARAMETER;
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}
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return dwStatus;
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}
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void
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CPropertyBag::DataListAddHead ( PPARAM_DATA pData )
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{
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assert ( NULL != pData );
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||
|
|
|
||
|
|
pData->pNextParam = m_plistData;
|
||
|
|
m_plistData = pData;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
CPropertyBag::PPARAM_DATA
|
||
|
|
CPropertyBag::DataListRemoveHead ( )
|
||
|
|
{
|
||
|
|
PPARAM_DATA pReturnData;
|
||
|
|
|
||
|
|
pReturnData = m_plistData;
|
||
|
|
|
||
|
|
if ( NULL != m_plistData )
|
||
|
|
m_plistData = m_plistData->pNextParam;
|
||
|
|
|
||
|
|
return pReturnData;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
CPropertyBag::PPARAM_DATA
|
||
|
|
CPropertyBag::FindProperty ( LPCWSTR pszPropName )
|
||
|
|
{
|
||
|
|
PPARAM_DATA pReturnData;
|
||
|
|
|
||
|
|
pReturnData = m_plistData;
|
||
|
|
|
||
|
|
while ( NULL != pReturnData ) {
|
||
|
|
if ( 0 == lstrcmpiW ( pszPropName, pReturnData->pszPropertyName ) )
|
||
|
|
break;
|
||
|
|
pReturnData = pReturnData->pNextParam;
|
||
|
|
}
|
||
|
|
|
||
|
|
return pReturnData;
|
||
|
|
}
|