768 lines
15 KiB
C++
768 lines
15 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1995.
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//
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// File: cprops.cxx
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//
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// Contents: Class Cache functionality for the NDS Provider
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//
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// Functions:
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// CClassCache::addentry
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// CClassCache::findentry
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// CClassCache::getentry
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// CProperyCache::CClassCache
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// CClassCache::~CClassCache
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// CClassCache::CreateClassCache
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//
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// History: 25-Apr-96 KrishnaG Created.
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//
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//----------------------------------------------------------------------------
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#include "nds.hxx"
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//+------------------------------------------------------------------------
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//
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// Function: CClassCache::addentry
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//
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// Synopsis:
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//
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//
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//
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// Arguments: [pszTreeName] --
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// [pszClassName] --
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// [pClassEntry] --
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//
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//
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//-------------------------------------------------------------------------
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HRESULT
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CClassCache::
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addentry(
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LPWSTR pszTreeName,
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LPWSTR pszClassName,
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PPROPENTRY pPropList
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)
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{
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HRESULT hr = S_OK;
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DWORD i = 0;
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DWORD dwLRUEntry = 0;
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DWORD dwIndex = 0;
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PPROPENTRY pNewPropList = NULL;
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EnterCriticalSection(&_cs);
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hr = findentry(
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pszTreeName,
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pszClassName,
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&dwIndex
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);
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if (SUCCEEDED(hr)) {
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hr = E_FAIL;
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BAIL_ON_FAILURE(hr);
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}
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//
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// Restore yr error code
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//
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hr = S_OK;
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if (_dwMaxCacheSize == 0 ) {
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LeaveCriticalSection(&_cs);
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RRETURN(E_FAIL);
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}
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for (i = 0; i < _dwMaxCacheSize; i++ ) {
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if (!_ClassEntries[i].bInUse) {
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//
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// Found an available entry; use it
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// fill in the name of the printer and the providor
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// that supports this printer.
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//
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break;
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} else {
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if ((dwLRUEntry == -1) || (i == IsOlderThan(i, dwLRUEntry))){
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dwLRUEntry = i;
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}
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}
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}
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if (i == _dwMaxCacheSize){
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//
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// We have no available entries so we need to use
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// the LRUEntry which is busy
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//
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//
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// Free this entry
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//
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if (_ClassEntries[dwLRUEntry].pPropList) {
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FreePropertyList(_ClassEntries[dwLRUEntry].pPropList);
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_ClassEntries[dwLRUEntry].pPropList = NULL;
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}
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//
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// BugBug: KrishnaG - add the free code!
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//
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_ClassEntries[dwLRUEntry].bInUse = FALSE;
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i = dwLRUEntry;
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}
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//
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// Insert the new entry into the Cache
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//
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wcscpy(_ClassEntries[i].szTreeName, pszTreeName);
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wcscpy(_ClassEntries[i].szClassName, pszClassName);
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pNewPropList = CopyPropList(pPropList);
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if (pNewPropList) {
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_ClassEntries[i].pPropList = pNewPropList;
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}
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_ClassEntries[i].bInUse = TRUE;
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//
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// update the time stamp so that we know when this entry was made
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//
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GetSystemTime(&_ClassEntries[i].st);
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error:
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LeaveCriticalSection(&_cs);
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RRETURN(hr);
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}
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//+------------------------------------------------------------------------
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//
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// Function: CClassCache::findentry
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//
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// Synopsis:
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//
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//
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//
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// Arguments: [szPropertyName] --
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// [pdwIndex] --
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//
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//-------------------------------------------------------------------------
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HRESULT
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CClassCache::
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findentry(
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LPWSTR pszTreeName,
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LPWSTR pszClassName,
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PDWORD pdwIndex
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)
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{
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DWORD i = 0;
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EnterCriticalSection(&_cs);
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if (_dwMaxCacheSize == 0 ) {
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LeaveCriticalSection(&_cs);
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RRETURN(E_FAIL);
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}
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for (i = 0; i < _dwMaxCacheSize; i++ ) {
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if (_ClassEntries[i].bInUse) {
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if ((!_wcsicmp(_ClassEntries[i].szTreeName, pszTreeName)) &&
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(!_wcsicmp(_ClassEntries[i].szClassName, pszClassName))) {
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//
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// update the time stamp so that it is current and not old
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//
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GetSystemTime(&_ClassEntries[i].st);
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*pdwIndex = i;
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LeaveCriticalSection(&_cs);
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RRETURN(S_OK);
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}
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}
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}
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LeaveCriticalSection(&_cs);
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RRETURN(E_FAIL);
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}
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//+------------------------------------------------------------------------
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//
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// Function: CClassCache::findentry
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//
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// Synopsis:
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//
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//
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//
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// Arguments: [szPropertyName] --
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// [pdwIndex] --
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//
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//-------------------------------------------------------------------------
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HRESULT
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CClassCache::
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getentry(
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LPWSTR pszTreeName,
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LPWSTR pszClassName,
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PPROPENTRY * ppPropList
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)
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{
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DWORD dwIndex = 0;
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HRESULT hr = S_OK;
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PPROPENTRY pPropList = NULL;
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EnterCriticalSection(&_cs);
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hr = findentry(
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pszTreeName,
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pszClassName,
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&dwIndex
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);
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BAIL_ON_FAILURE(hr);
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pPropList = CopyPropList(
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_ClassEntries[dwIndex].pPropList
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);
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*ppPropList = pPropList;
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error:
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LeaveCriticalSection(&_cs);
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RRETURN(hr);
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}
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//+------------------------------------------------------------------------
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//
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// Function: CClassCache
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//
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// Synopsis:
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//
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//
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//
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// Arguments:
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//
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//
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//-------------------------------------------------------------------------
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CClassCache::
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CClassCache():
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_dwMaxCacheSize(2)
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{
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memset(_ClassEntries, 0, sizeof(CLASSENTRY));
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}
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//+------------------------------------------------------------------------
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//
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// Function: ~CClassCache
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//
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// Synopsis:
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//
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//
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//
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// Arguments:
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//
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//
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//-------------------------------------------------------------------------
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CClassCache::
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~CClassCache()
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{
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//
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// BugBug: KrishnaG - free each one of the data items
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//
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DWORD i;
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for (i = 0; i < _dwMaxCacheSize; i++ ) {
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if (_ClassEntries[i].bInUse) {
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if (_ClassEntries[i].pPropList) {
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FreePropertyList(_ClassEntries[i].pPropList);
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_ClassEntries[i].pPropList = NULL;
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}
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_ClassEntries[i].bInUse = FALSE;
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}
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}
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}
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//+------------------------------------------------------------------------
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//
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// Function:
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//
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// Synopsis:
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//
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//
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//
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// Arguments:
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//
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//
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//-------------------------------------------------------------------------
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HRESULT
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CClassCache::
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CreateClassCache(
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CClassCache FAR *FAR * ppClassCache
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)
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{
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CClassCache FAR * pClassCache = NULL;
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pClassCache = new CClassCache();
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if (!pClassCache) {
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RRETURN(E_FAIL);
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}
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InitializeCriticalSection(&(pClassCache->_cs));
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*ppClassCache = pClassCache;
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RRETURN(S_OK);
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}
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DWORD
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CClassCache::
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IsOlderThan(
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DWORD i,
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DWORD j
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)
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{
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SYSTEMTIME *pi, *pj;
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DWORD iMs, jMs;
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// DBGMSG(DBG_TRACE, ("IsOlderThan entering with i %d j %d\n", i, j));
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pi = &(_ClassEntries[i].st);
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pj = &(_ClassEntries[j].st);
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if (pi->wYear < pj->wYear) {
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// DBGMSG(DBG_TRACE, ("IsOlderThan returns %d\n", i));
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return(i);
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} else if (pi->wYear > pj->wYear) {
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// DBGMSG(DBG_TRACE, ("IsOlderThan returns %d\n", j));
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return(j);
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} else if (pi->wMonth < pj->wMonth) {
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// DBGMSG(DBG_TRACE, ("IsOlderThan returns %d\n", i));
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return(i);
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} else if (pi->wMonth > pj->wMonth) {
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// DBGMSG(DBG_TRACE, ("IsOlderThan returns %d\n", j));
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return(j);
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} else if (pi->wDay < pj->wDay) {
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// DBGMSG(DBG_TRACE, ("IsOlderThan returns %d\n", i));
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return(i);
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} else if (pi->wDay > pj->wDay) {
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// DBGMSG(DBG_TRACE, ("IsOlderThan returns %d\n", j));
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return(j);
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} else {
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iMs = ((((pi->wHour * 60) + pi->wMinute)*60) + pi->wSecond)* 1000 + pi->wMilliseconds;
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jMs = ((((pj->wHour * 60) + pj->wMinute)*60) + pj->wSecond)* 1000 + pj->wMilliseconds;
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if (iMs <= jMs) {
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// DBGMSG(DBG_TRACE, ("IsOlderThan returns %d\n", i));
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return(i);
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} else {
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// DBGMSG(DBG_TRACE, ("IsOlderThan returns %d\n", j));
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return(j);
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}
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}
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}
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HRESULT
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ValidatePropertyinCache(
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LPWSTR pszTreeName,
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LPWSTR pszClassName,
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LPWSTR pszPropName,
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CCredentials& Credentials,
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PDWORD pdwSyntaxId
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)
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{
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HRESULT hr = S_OK;
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PPROPENTRY pPropList = NULL;
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hr = pgClassCache->getentry(
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pszTreeName,
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pszClassName,
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&pPropList
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);
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if (FAILED(hr)) {
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hr = NdsGetClassInformation(
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pszTreeName,
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pszClassName,
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Credentials,
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&pPropList
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);
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BAIL_ON_FAILURE(hr);
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hr = pgClassCache->addentry(
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pszTreeName,
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pszClassName,
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pPropList
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);
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BAIL_ON_FAILURE(hr);
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}
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hr = FindProperty(
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pPropList,
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pszPropName,
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pdwSyntaxId
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);
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BAIL_ON_FAILURE(hr);
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error:
|
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if (pPropList) {
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FreePropertyList(pPropList);
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}
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RRETURN(hr);
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|
||
|
|
}
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
NdsGetClassInformation(
|
||
|
|
LPWSTR pszTreeName,
|
||
|
|
LPWSTR pszClassName,
|
||
|
|
CCredentials& Credentials,
|
||
|
|
PPROPENTRY * ppPropList
|
||
|
|
)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
LPNDS_CLASS_DEF lpClassDefs = NULL;
|
||
|
|
DWORD dwStatus;
|
||
|
|
DWORD dwObjectReturned = 0;
|
||
|
|
DWORD dwInfoType = 0;
|
||
|
|
NDS_CONTEXT_HANDLE hADsContext = NULL;
|
||
|
|
NDS_BUFFER_HANDLE hOperationData = NULL;
|
||
|
|
PPROPENTRY pPropList = NULL;
|
||
|
|
|
||
|
|
hr = ADsNdsOpenContext(
|
||
|
|
pszTreeName,
|
||
|
|
Credentials,
|
||
|
|
&hADsContext
|
||
|
|
);
|
||
|
|
BAIL_ON_FAILURE(hr);
|
||
|
|
|
||
|
|
hr = ADsNdsReadClassDef(
|
||
|
|
hADsContext,
|
||
|
|
DS_EXPANDED_CLASS_DEFS,
|
||
|
|
&pszClassName,
|
||
|
|
1,
|
||
|
|
&hOperationData
|
||
|
|
);
|
||
|
|
BAIL_ON_FAILURE(hr);
|
||
|
|
|
||
|
|
|
||
|
|
hr = ADsNdsGetClassDefListFromBuffer(
|
||
|
|
hADsContext,
|
||
|
|
hOperationData,
|
||
|
|
&dwObjectReturned,
|
||
|
|
&dwInfoType,
|
||
|
|
&lpClassDefs
|
||
|
|
);
|
||
|
|
BAIL_ON_FAILURE(hr);
|
||
|
|
|
||
|
|
pPropList = GenerateAttrIdList(
|
||
|
|
hADsContext,
|
||
|
|
lpClassDefs->lpMandatoryAttributes,
|
||
|
|
lpClassDefs->lpOptionalAttributes
|
||
|
|
);
|
||
|
|
|
||
|
|
/*
|
||
|
|
pPropList = GeneratePropertyAndIdList(
|
||
|
|
pszTreeName,
|
||
|
|
lpClassDefs->lpMandatoryAttributes,
|
||
|
|
lpClassDefs->lpOptionalAttributes
|
||
|
|
);*/
|
||
|
|
if (!pPropList) {
|
||
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
||
|
|
BAIL_ON_FAILURE(hr);
|
||
|
|
}
|
||
|
|
|
||
|
|
*ppPropList = pPropList;
|
||
|
|
|
||
|
|
|
||
|
|
error:
|
||
|
|
|
||
|
|
if (hADsContext) {
|
||
|
|
ADsNdsCloseContext(hADsContext);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (hOperationData) {
|
||
|
|
ADsNdsFreeBuffer(hOperationData);
|
||
|
|
}
|
||
|
|
|
||
|
|
ADsNdsFreeClassDefList(lpClassDefs, dwObjectReturned);
|
||
|
|
|
||
|
|
RRETURN(hr);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
PPROPENTRY
|
||
|
|
CreatePropertyEntry(
|
||
|
|
LPWSTR pszPropertyName,
|
||
|
|
DWORD dwSyntaxId
|
||
|
|
)
|
||
|
|
{
|
||
|
|
LPWSTR pszTemp = NULL;
|
||
|
|
PPROPENTRY pPropName = NULL;
|
||
|
|
|
||
|
|
pszTemp = (LPWSTR)AllocADsStr(
|
||
|
|
pszPropertyName
|
||
|
|
);
|
||
|
|
if (!pszTemp) {
|
||
|
|
return(NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
pPropName = (PPROPENTRY)AllocADsMem(
|
||
|
|
sizeof(PROPENTRY)
|
||
|
|
);
|
||
|
|
if (!pPropName) {
|
||
|
|
FreeADsStr(pszTemp);
|
||
|
|
return(NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
pPropName->pszPropName = pszTemp;
|
||
|
|
pPropName->dwSyntaxId = dwSyntaxId;
|
||
|
|
|
||
|
|
return(pPropName);
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
FreePropertyEntry(
|
||
|
|
PPROPENTRY pPropName
|
||
|
|
)
|
||
|
|
{
|
||
|
|
if (pPropName->pszPropName) {
|
||
|
|
FreeADsStr(pPropName->pszPropName);
|
||
|
|
}
|
||
|
|
|
||
|
|
FreeADsMem(pPropName);
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void
|
||
|
|
FreePropertyList(
|
||
|
|
PPROPENTRY pPropList
|
||
|
|
)
|
||
|
|
{
|
||
|
|
PPROPENTRY pTemp = NULL;
|
||
|
|
|
||
|
|
while (pPropList) {
|
||
|
|
pTemp = pPropList->pNext;
|
||
|
|
|
||
|
|
FreePropertyEntry(pPropList);
|
||
|
|
|
||
|
|
pPropList = pTemp;
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
PPROPENTRY
|
||
|
|
GeneratePropertyList(
|
||
|
|
LPWSTR_LIST lpMandatoryProps,
|
||
|
|
LPWSTR_LIST lpOptionalProps
|
||
|
|
)
|
||
|
|
{
|
||
|
|
PPROPENTRY pStart = NULL;
|
||
|
|
PPROPENTRY lpProperty = NULL;
|
||
|
|
LPWSTR_LIST lpTempStrings = NULL;
|
||
|
|
|
||
|
|
lpTempStrings = lpMandatoryProps;
|
||
|
|
|
||
|
|
while (lpTempStrings) {
|
||
|
|
|
||
|
|
|
||
|
|
lpProperty = CreatePropertyEntry(
|
||
|
|
lpTempStrings->szString,
|
||
|
|
0
|
||
|
|
);
|
||
|
|
if (!lpProperty) {
|
||
|
|
goto cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
lpProperty->pNext = pStart;
|
||
|
|
pStart = lpProperty;
|
||
|
|
|
||
|
|
lpTempStrings = lpTempStrings->Next;
|
||
|
|
}
|
||
|
|
|
||
|
|
lpTempStrings = lpOptionalProps;
|
||
|
|
|
||
|
|
while (lpTempStrings) {
|
||
|
|
|
||
|
|
|
||
|
|
lpProperty = CreatePropertyEntry(
|
||
|
|
lpTempStrings->szString,
|
||
|
|
0
|
||
|
|
);
|
||
|
|
if (!lpProperty) {
|
||
|
|
goto cleanup;
|
||
|
|
}
|
||
|
|
|
||
|
|
lpProperty->pNext = pStart;
|
||
|
|
pStart = lpProperty;
|
||
|
|
|
||
|
|
lpTempStrings = lpTempStrings->Next;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
cleanup:
|
||
|
|
|
||
|
|
return(pStart);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
HRESULT
|
||
|
|
FindProperty(
|
||
|
|
PPROPENTRY pPropList,
|
||
|
|
LPWSTR pszPropName,
|
||
|
|
PDWORD pdwSyntaxId
|
||
|
|
)
|
||
|
|
{
|
||
|
|
while (pPropList) {
|
||
|
|
if (!_wcsicmp(pPropList->pszPropName, pszPropName)) {
|
||
|
|
*pdwSyntaxId = pPropList->dwSyntaxId;
|
||
|
|
RRETURN(S_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
pPropList = pPropList->pNext;
|
||
|
|
}
|
||
|
|
|
||
|
|
RRETURN(E_ADS_PROPERTY_NOT_FOUND);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
PPROPENTRY
|
||
|
|
CopyPropList(
|
||
|
|
PPROPENTRY pPropList
|
||
|
|
)
|
||
|
|
{
|
||
|
|
|
||
|
|
PPROPENTRY pPropEntry = NULL;
|
||
|
|
PPROPENTRY pStart = NULL;
|
||
|
|
|
||
|
|
while (pPropList) {
|
||
|
|
pPropEntry = CreatePropertyEntry(
|
||
|
|
pPropList->pszPropName,
|
||
|
|
pPropList->dwSyntaxId
|
||
|
|
);
|
||
|
|
if (!pPropEntry) {
|
||
|
|
return(pStart);
|
||
|
|
}
|
||
|
|
|
||
|
|
pPropEntry->pNext = pStart;
|
||
|
|
pStart = pPropEntry;
|
||
|
|
|
||
|
|
pPropList = pPropList->pNext;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return(pStart);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
PPROPENTRY
|
||
|
|
GenerateAttrIdList(
|
||
|
|
NDS_CONTEXT_HANDLE hADsContext,
|
||
|
|
LPWSTR_LIST lpMandatoryProps,
|
||
|
|
LPWSTR_LIST lpOptionalProps
|
||
|
|
)
|
||
|
|
{
|
||
|
|
PPROPENTRY pStart = NULL;
|
||
|
|
PPROPENTRY pPropEntry = NULL;
|
||
|
|
LPWSTR_LIST lpTempStrings = NULL;
|
||
|
|
HANDLE hOperationData = NULL;
|
||
|
|
DWORD i = 0;
|
||
|
|
WCHAR szTempBuffer[MAX_PATH];
|
||
|
|
|
||
|
|
DWORD dwSyntaxId = 0;
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
lpTempStrings = lpMandatoryProps;
|
||
|
|
|
||
|
|
while (lpTempStrings) {
|
||
|
|
|
||
|
|
wcscpy(szTempBuffer, lpTempStrings->szString);
|
||
|
|
|
||
|
|
hr = ADsNdsGetSyntaxID(
|
||
|
|
hADsContext,
|
||
|
|
szTempBuffer,
|
||
|
|
&dwSyntaxId
|
||
|
|
);
|
||
|
|
BAIL_ON_FAILURE(hr);
|
||
|
|
|
||
|
|
pPropEntry = CreatePropertyEntry(
|
||
|
|
szTempBuffer,
|
||
|
|
dwSyntaxId
|
||
|
|
);
|
||
|
|
|
||
|
|
if (!pPropEntry)
|
||
|
|
goto error;
|
||
|
|
|
||
|
|
pPropEntry->pNext = pStart;
|
||
|
|
pStart = pPropEntry;
|
||
|
|
|
||
|
|
lpTempStrings = lpTempStrings->Next;
|
||
|
|
}
|
||
|
|
|
||
|
|
lpTempStrings = lpOptionalProps;
|
||
|
|
|
||
|
|
while (lpTempStrings) {
|
||
|
|
|
||
|
|
wcscpy(szTempBuffer, lpTempStrings->szString);
|
||
|
|
|
||
|
|
hr = ADsNdsGetSyntaxID(
|
||
|
|
hADsContext,
|
||
|
|
szTempBuffer,
|
||
|
|
&dwSyntaxId
|
||
|
|
);
|
||
|
|
BAIL_ON_FAILURE(hr);
|
||
|
|
|
||
|
|
pPropEntry = CreatePropertyEntry(
|
||
|
|
szTempBuffer,
|
||
|
|
dwSyntaxId
|
||
|
|
);
|
||
|
|
|
||
|
|
if (!pPropEntry)
|
||
|
|
goto error;
|
||
|
|
|
||
|
|
pPropEntry->pNext = pStart;
|
||
|
|
pStart = pPropEntry;
|
||
|
|
|
||
|
|
lpTempStrings = lpTempStrings->Next;
|
||
|
|
}
|
||
|
|
|
||
|
|
error:
|
||
|
|
|
||
|
|
return(pStart);
|
||
|
|
}
|