682 lines
20 KiB
C++
682 lines
20 KiB
C++
//=============================================================================
|
|
//
|
|
// Copyright (c) 1996-1999, Microsoft Corporation, All rights reserved
|
|
//
|
|
// PERMFILT.CPP
|
|
//
|
|
// This file implements the classes for standard event filters.
|
|
//
|
|
// History:
|
|
//
|
|
// 11/27/96 a-levn Compiles.
|
|
//
|
|
//=============================================================================
|
|
#include "precomp.h"
|
|
#include <sddl.h>
|
|
#include <stdio.h>
|
|
#include "pragmas.h"
|
|
#include "permfilt.h"
|
|
#include "ess.h"
|
|
#include <genutils.h>
|
|
|
|
long CPermanentFilter::mstatic_lNameHandle = 0;
|
|
long CPermanentFilter::mstatic_lLanguageHandle = 0;
|
|
long CPermanentFilter::mstatic_lQueryHandle = 0;
|
|
long CPermanentFilter::mstatic_lEventNamespaceHandle = 0;
|
|
long CPermanentFilter::mstatic_lEventAccessHandle = 0;
|
|
long CPermanentFilter::mstatic_lGuardNamespaceHandle = 0;
|
|
long CPermanentFilter::mstatic_lGuardHandle = 0;
|
|
long CPermanentFilter::mstatic_lSidHandle = 0;
|
|
bool CPermanentFilter::mstatic_bHandlesInitialized = false;
|
|
|
|
//static
|
|
HRESULT CPermanentFilter::InitializeHandles( _IWmiObject* pObject )
|
|
{
|
|
if(mstatic_bHandlesInitialized)
|
|
return S_FALSE;
|
|
|
|
CIMTYPE ct;
|
|
pObject->GetPropertyHandle(FILTER_KEY_PROPNAME, &ct,
|
|
&mstatic_lNameHandle);
|
|
pObject->GetPropertyHandle(FILTER_LANGUAGE_PROPNAME, &ct,
|
|
&mstatic_lLanguageHandle);
|
|
pObject->GetPropertyHandle(FILTER_QUERY_PROPNAME, &ct,
|
|
&mstatic_lQueryHandle);
|
|
pObject->GetPropertyHandle(FILTER_EVENTNAMESPACE_PROPNAME, &ct,
|
|
&mstatic_lEventNamespaceHandle);
|
|
pObject->GetPropertyHandleEx(FILTER_EVENTACCESS_PROPNAME, 0, &ct,
|
|
&mstatic_lEventAccessHandle );
|
|
pObject->GetPropertyHandle(FILTER_GUARDNAMESPACE_PROPNAME, &ct,
|
|
&mstatic_lGuardNamespaceHandle);
|
|
pObject->GetPropertyHandle(FILTER_GUARD_PROPNAME, &ct,
|
|
&mstatic_lGuardHandle);
|
|
pObject->GetPropertyHandleEx(OWNER_SID_PROPNAME, 0, &ct,
|
|
&mstatic_lSidHandle);
|
|
mstatic_bHandlesInitialized = true;
|
|
return S_OK;
|
|
}
|
|
//******************************************************************************
|
|
// public
|
|
//
|
|
// See stdtrig.h for documentation
|
|
//
|
|
//******************************************************************************
|
|
CPermanentFilter::CPermanentFilter(CEssNamespace* pNamespace)
|
|
: CGenericFilter(pNamespace), m_pEventAccessRelativeSD(NULL)
|
|
{
|
|
}
|
|
|
|
CPermanentFilter::~CPermanentFilter()
|
|
{
|
|
if ( m_pEventAccessRelativeSD != NULL )
|
|
{
|
|
LocalFree( m_pEventAccessRelativeSD );
|
|
}
|
|
}
|
|
|
|
HRESULT CPermanentFilter::Initialize( IWbemClassObject* pObj )
|
|
{
|
|
HRESULT hres;
|
|
|
|
CWbemPtr<_IWmiObject> pFilterObj;
|
|
|
|
hres = pObj->QueryInterface( IID__IWmiObject, (void**)&pFilterObj );
|
|
|
|
if ( FAILED(hres) )
|
|
{
|
|
return hres;
|
|
}
|
|
|
|
InitializeHandles( pFilterObj );
|
|
|
|
// Check class
|
|
// ===========
|
|
|
|
if(pFilterObj->InheritsFrom(L"__EventFilter") != S_OK)
|
|
return WBEM_E_INVALID_OBJECT;
|
|
|
|
// Determine the query language
|
|
// ============================
|
|
|
|
ULONG ulFlags;
|
|
CCompressedString* pcsLanguage;
|
|
|
|
hres = pFilterObj->GetPropAddrByHandle( mstatic_lLanguageHandle,
|
|
WMIOBJECT_FLAG_ENCODING_V1,
|
|
&ulFlags,
|
|
(void**)&pcsLanguage );
|
|
if( hres != S_OK || pcsLanguage == NULL)
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Event filter with invalid query language is "
|
|
"rejected\n"));
|
|
return WBEM_E_INVALID_OBJECT;
|
|
}
|
|
|
|
if( pcsLanguage->CompareNoCase("WQL") != 0 )
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Event filter with invalid query language '%S' is "
|
|
"rejected\n", pcsLanguage->CreateWStringCopy()));
|
|
return WBEM_E_INVALID_QUERY_TYPE;
|
|
}
|
|
|
|
// Get the query
|
|
// =============
|
|
|
|
CCompressedString* pcsQuery;
|
|
|
|
hres = pFilterObj->GetPropAddrByHandle( mstatic_lQueryHandle,
|
|
WMIOBJECT_FLAG_ENCODING_V1,
|
|
&ulFlags,
|
|
(void**)&pcsQuery );
|
|
if( hres != S_OK )
|
|
{
|
|
return WBEM_E_INVALID_OBJECT;
|
|
}
|
|
|
|
LPWSTR wszQuery = pcsQuery->CreateWStringCopy().UnbindPtr();
|
|
if(wszQuery == NULL)
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
CVectorDeleteMe<WCHAR> vdm1(wszQuery);
|
|
|
|
// Store it temporarily (until Park is called)
|
|
// ===========================================
|
|
|
|
// Figure out how much space we need
|
|
// =================================
|
|
|
|
int nSpace = pcsQuery->GetLength();
|
|
|
|
// Allocate this string on the temporary heap
|
|
// ==========================================
|
|
|
|
m_pcsQuery = (CCompressedString*)CTemporaryHeap::Alloc(nSpace);
|
|
if(m_pcsQuery == NULL)
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
|
|
// Copy the contents
|
|
// =================
|
|
|
|
memcpy((void*)m_pcsQuery, pcsQuery, nSpace);
|
|
|
|
//
|
|
// Get the event namespace
|
|
//
|
|
|
|
if(mstatic_lEventNamespaceHandle) // to protect against old repositories
|
|
{
|
|
CCompressedString* pcsEventNamespace;
|
|
|
|
hres = pFilterObj->GetPropAddrByHandle( mstatic_lEventNamespaceHandle,
|
|
WMIOBJECT_FLAG_ENCODING_V1,
|
|
&ulFlags,
|
|
(void**)&pcsEventNamespace );
|
|
if( FAILED(hres) )
|
|
{
|
|
return hres;
|
|
}
|
|
else if ( hres == S_OK ) // o.k if event namespace is null.
|
|
{
|
|
if( !(m_isEventNamespace = pcsEventNamespace))
|
|
{
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
}
|
|
|
|
CCompressedString* pcsGuard = NULL;
|
|
if(mstatic_lGuardHandle) // to protect against old repositories
|
|
{
|
|
|
|
hres = pFilterObj->GetPropAddrByHandle( mstatic_lGuardHandle,
|
|
WMIOBJECT_FLAG_ENCODING_V1,
|
|
&ulFlags,
|
|
(void**)&pcsGuard );
|
|
if( FAILED(hres) )
|
|
return hres;
|
|
}
|
|
|
|
if(pcsGuard)
|
|
{
|
|
CCompressedString* pcsGuardNamespace = NULL;
|
|
if(mstatic_lGuardNamespaceHandle) // to protect against old repositories
|
|
{
|
|
|
|
hres = pFilterObj->GetPropAddrByHandle(
|
|
mstatic_lGuardNamespaceHandle,
|
|
WMIOBJECT_FLAG_ENCODING_V1,
|
|
&ulFlags,
|
|
(void**)&pcsGuardNamespace );
|
|
if( FAILED(hres) )
|
|
return hres;
|
|
}
|
|
|
|
//
|
|
// Check query type
|
|
//
|
|
|
|
VARIANT vType;
|
|
VariantInit(&vType);
|
|
CClearMe cm1(&vType);
|
|
|
|
hres = pFilterObj->Get(FILTER_GUARDLANG_PROPNAME, 0, &vType, NULL,
|
|
NULL);
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Condition without a query type? Not valid\n"));
|
|
return hres;
|
|
}
|
|
|
|
if(V_VT(&vType) != VT_BSTR)
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Condition without a query type? Not "
|
|
"valid\n"));
|
|
return WBEM_E_INVALID_OBJECT;
|
|
}
|
|
|
|
if(wbem_wcsicmp(V_BSTR(&vType), L"WQL"))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Condition with invalid query type %S is "
|
|
"rejected\n", V_BSTR(&vType)));
|
|
return hres;
|
|
}
|
|
|
|
|
|
if(pcsGuardNamespace)
|
|
hres = SetGuardQuery(pcsGuard->CreateWStringCopy(),
|
|
pcsGuardNamespace->CreateWStringCopy());
|
|
else
|
|
hres = SetGuardQuery(pcsGuard->CreateWStringCopy(), NULL);
|
|
|
|
if( FAILED(hres) )
|
|
return hres;
|
|
}
|
|
|
|
//
|
|
// Record the name of this filter
|
|
//
|
|
|
|
CCompressedString* pcsKey;
|
|
|
|
hres = pFilterObj->GetPropAddrByHandle( mstatic_lNameHandle,
|
|
WMIOBJECT_FLAG_ENCODING_V1,
|
|
&ulFlags,
|
|
(void**)&pcsKey );
|
|
if( hres != S_OK )
|
|
{
|
|
return WBEM_E_INVALID_OBJECT;
|
|
}
|
|
|
|
if(!(m_isKey = pcsKey))
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
|
|
// Get the SID
|
|
// ===========
|
|
|
|
PSID pSid;
|
|
ULONG ulNumElements;
|
|
|
|
hres = pFilterObj->GetArrayPropAddrByHandle( mstatic_lSidHandle,
|
|
0,
|
|
&ulNumElements,
|
|
&pSid );
|
|
if ( hres != S_OK )
|
|
{
|
|
return WBEM_E_INVALID_OBJECT;
|
|
}
|
|
|
|
m_pOwnerSid = new BYTE[ulNumElements];
|
|
|
|
if ( m_pOwnerSid == NULL )
|
|
{
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
}
|
|
|
|
memcpy( m_pOwnerSid, pSid, ulNumElements );
|
|
|
|
//
|
|
// Get the event access SD
|
|
//
|
|
|
|
if( mstatic_lEventAccessHandle ) // to protect against old repositories
|
|
{
|
|
CCompressedString* pcsEventAccess;
|
|
|
|
hres = pFilterObj->GetPropAddrByHandle( mstatic_lEventAccessHandle,
|
|
WMIOBJECT_FLAG_ENCODING_V1,
|
|
&ulFlags,
|
|
(void**)&pcsEventAccess );
|
|
if( FAILED(hres) )
|
|
{
|
|
return hres;
|
|
}
|
|
else if ( hres == S_OK ) // o.k if event access is null.
|
|
{
|
|
WString wsEventAccess;
|
|
|
|
try
|
|
{
|
|
wsEventAccess = pcsEventAccess->CreateWStringCopy();
|
|
}
|
|
catch( CX_MemoryException )
|
|
{
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
}
|
|
|
|
ULONG cEventAccessRelativeSD;
|
|
|
|
if ( !ConvertStringSecurityDescriptorToSecurityDescriptorW(
|
|
wsEventAccess,
|
|
SDDL_REVISION_1,
|
|
&m_pEventAccessRelativeSD,
|
|
&cEventAccessRelativeSD ) )
|
|
{
|
|
WString wsKey = m_isKey;
|
|
try { wsKey = m_isKey; } catch( CX_MemoryException ) {}
|
|
ERRORTRACE((LOG_ESS, "Filter '%S' contained invalid SDDL "
|
|
"string for event access SD.\n", wsKey ));
|
|
return HRESULT_FROM_WIN32( GetLastError() );
|
|
}
|
|
|
|
//
|
|
// convert the self-relative SD to an absolute SD so we can
|
|
// set the owner and group fields ( required by AccessCheck )
|
|
//
|
|
|
|
if ( !InitializeSecurityDescriptor( &m_EventAccessAbsoluteSD,
|
|
SECURITY_DESCRIPTOR_REVISION ))
|
|
{
|
|
return HRESULT_FROM_WIN32( GetLastError() );
|
|
}
|
|
|
|
PACL pAcl;
|
|
BOOL bAclPresent, bAclDefaulted;
|
|
|
|
if ( !GetSecurityDescriptorDacl( m_pEventAccessRelativeSD,
|
|
&bAclPresent,
|
|
&pAcl,
|
|
&bAclDefaulted ) )
|
|
{
|
|
return HRESULT_FROM_WIN32( GetLastError() );
|
|
}
|
|
|
|
if ( !SetSecurityDescriptorDacl( &m_EventAccessAbsoluteSD,
|
|
bAclPresent,
|
|
pAcl,
|
|
bAclDefaulted ) )
|
|
{
|
|
return HRESULT_FROM_WIN32( GetLastError() );
|
|
}
|
|
|
|
if ( !GetSecurityDescriptorSacl( m_pEventAccessRelativeSD,
|
|
&bAclPresent,
|
|
&pAcl,
|
|
&bAclDefaulted ) )
|
|
{
|
|
return HRESULT_FROM_WIN32( GetLastError() );
|
|
}
|
|
|
|
if ( !SetSecurityDescriptorSacl( &m_EventAccessAbsoluteSD,
|
|
bAclPresent,
|
|
pAcl,
|
|
bAclDefaulted ) )
|
|
{
|
|
return HRESULT_FROM_WIN32( GetLastError() );
|
|
}
|
|
|
|
//
|
|
// always need to set the owner and group sids. We do this for
|
|
// two reasons (1) we want to override the user putting in anything
|
|
// they want for these fields, and (2) we want to ensure that
|
|
// these fields are set because AccessCheck() requires it.
|
|
//
|
|
|
|
if ( !SetSecurityDescriptorOwner( &m_EventAccessAbsoluteSD,
|
|
m_pOwnerSid,
|
|
TRUE ) )
|
|
{
|
|
return HRESULT_FROM_WIN32( GetLastError() );
|
|
}
|
|
|
|
if ( !SetSecurityDescriptorGroup( &m_EventAccessAbsoluteSD,
|
|
m_pOwnerSid,
|
|
TRUE ) )
|
|
{
|
|
return HRESULT_FROM_WIN32( GetLastError() );
|
|
}
|
|
}
|
|
}
|
|
|
|
// Initialize the generic filter accordingly
|
|
// =========================================
|
|
|
|
hres = CGenericFilter::Create(L"WQL", wszQuery);
|
|
if(FAILED(hres))
|
|
return hres;
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
const PSECURITY_DESCRIPTOR CPermanentFilter::GetEventAccessSD()
|
|
{
|
|
if ( m_pEventAccessRelativeSD != NULL )
|
|
{
|
|
return &m_EventAccessAbsoluteSD;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
HRESULT CPermanentFilter::GetCoveringQuery(DELETE_ME LPWSTR& wszQueryLanguage,
|
|
DELETE_ME LPWSTR& wszQuery, BOOL& bExact,
|
|
QL_LEVEL_1_RPN_EXPRESSION** ppExp)
|
|
{
|
|
HRESULT hres;
|
|
|
|
if(m_pcsQuery == NULL)
|
|
{
|
|
hres = RetrieveQuery(wszQuery);
|
|
}
|
|
else
|
|
{
|
|
wszQuery = m_pcsQuery->CreateWStringCopy().UnbindPtr();
|
|
if(wszQuery == NULL)
|
|
hres = WBEM_E_OUT_OF_MEMORY;
|
|
else
|
|
hres = WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
if(FAILED(hres))
|
|
return hres;
|
|
|
|
if(ppExp)
|
|
{
|
|
// Parse it
|
|
// ========
|
|
|
|
CTextLexSource src(wszQuery);
|
|
QL1_Parser parser(&src);
|
|
int nRes = parser.Parse(ppExp);
|
|
if (nRes)
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Unable to construct event filter with "
|
|
"unparsable "
|
|
"query '%S'. The filter is not active\n", wszQuery));
|
|
return WBEM_E_UNPARSABLE_QUERY;
|
|
}
|
|
}
|
|
|
|
bExact = TRUE;
|
|
wszQueryLanguage = CloneWstr(L"WQL");
|
|
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
HRESULT CPermanentFilter::RetrieveQuery(DELETE_ME LPWSTR& wszQuery)
|
|
{
|
|
HRESULT hres;
|
|
|
|
//
|
|
// Construct db path
|
|
//
|
|
|
|
BSTR strPath = SysAllocStringLen(NULL, m_isKey.GetLength() + 100);
|
|
if(strPath == NULL)
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
CSysFreeMe sfm1(strPath);
|
|
|
|
swprintf(strPath, L"__EventFilter=\"%s\"", (LPCWSTR)(WString)m_isKey);
|
|
|
|
//
|
|
// Retrieve the object
|
|
//
|
|
|
|
_IWmiObject* pFilterObj;
|
|
hres = m_pNamespace->GetDbInstance(strPath, &pFilterObj);
|
|
if(FAILED(hres))
|
|
return WBEM_E_INVALID_OBJECT;
|
|
|
|
CReleaseMe rm(pFilterObj);
|
|
|
|
InitializeHandles(pFilterObj);
|
|
|
|
// Extract its properties
|
|
// ======================
|
|
|
|
ULONG ulFlags;
|
|
CCompressedString* pcsQuery;
|
|
|
|
hres = pFilterObj->GetPropAddrByHandle( mstatic_lQueryHandle,
|
|
WMIOBJECT_FLAG_ENCODING_V1,
|
|
&ulFlags,
|
|
(void**)&pcsQuery );
|
|
if( hres != S_OK )
|
|
{
|
|
return WBEM_E_INVALID_OBJECT;
|
|
}
|
|
|
|
wszQuery = pcsQuery->CreateWStringCopy().UnbindPtr();
|
|
|
|
if(wszQuery == NULL)
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
HRESULT CPermanentFilter::GetEventNamespace(
|
|
DELETE_ME LPWSTR* pwszNamespace)
|
|
{
|
|
if(m_isEventNamespace.IsEmpty())
|
|
*pwszNamespace = NULL;
|
|
else
|
|
{
|
|
*pwszNamespace = m_isEventNamespace.CreateLPWSTRCopy();
|
|
if(*pwszNamespace == NULL)
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
}
|
|
return S_OK;
|
|
}
|
|
|
|
SYSFREE_ME BSTR
|
|
CPermanentFilter::ComputeKeyFromObj( IWbemClassObject* pObj )
|
|
{
|
|
HRESULT hres;
|
|
|
|
CWbemPtr<_IWmiObject> pFilterObj;
|
|
|
|
hres = pObj->QueryInterface( IID__IWmiObject, (void**)&pFilterObj );
|
|
|
|
if ( FAILED(hres) )
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
InitializeHandles(pFilterObj);
|
|
|
|
ULONG ulFlags;
|
|
CCompressedString* pcsKey;
|
|
|
|
hres = pFilterObj->GetPropAddrByHandle( mstatic_lNameHandle,
|
|
WMIOBJECT_FLAG_ENCODING_V1,
|
|
&ulFlags,
|
|
(void**)&pcsKey );
|
|
if( hres != S_OK )
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
return pcsKey->CreateBSTRCopy();
|
|
}
|
|
|
|
SYSFREE_ME BSTR CPermanentFilter::ComputeKeyFromPath(
|
|
LPCWSTR wszPath)
|
|
{
|
|
// Find the first quote
|
|
// ====================
|
|
|
|
WCHAR* pwcFirstQuote = wcschr(wszPath, L'"');
|
|
if(pwcFirstQuote == NULL)
|
|
return NULL;
|
|
|
|
// Find the next quote
|
|
// ===================
|
|
|
|
WCHAR* pwcLastQuote = wcschr(pwcFirstQuote+1, L'"');
|
|
if(pwcLastQuote == NULL)
|
|
return NULL;
|
|
|
|
return SysAllocStringLen(pwcFirstQuote+1, pwcLastQuote - pwcFirstQuote - 1);
|
|
}
|
|
|
|
|
|
HRESULT CPermanentFilter::CheckValidity( IWbemClassObject* pObj )
|
|
{
|
|
HRESULT hres;
|
|
|
|
CWbemPtr<_IWmiObject> pFilterObj;
|
|
|
|
hres = pObj->QueryInterface( IID__IWmiObject, (void**)&pFilterObj );
|
|
|
|
if ( FAILED(hres) )
|
|
{
|
|
return hres;
|
|
}
|
|
|
|
InitializeHandles(pFilterObj);
|
|
|
|
//
|
|
// Check class
|
|
//
|
|
|
|
if(pFilterObj->InheritsFrom(L"__EventFilter") != S_OK)
|
|
return WBEM_E_INVALID_OBJECT;
|
|
|
|
//
|
|
// Check the query language
|
|
//
|
|
|
|
ULONG ulFlags;
|
|
CCompressedString* pcsLanguage;
|
|
|
|
hres = pFilterObj->GetPropAddrByHandle( mstatic_lLanguageHandle,
|
|
WMIOBJECT_FLAG_ENCODING_V1,
|
|
&ulFlags,
|
|
(void**)&pcsLanguage );
|
|
if( hres != S_OK )
|
|
{
|
|
return WBEM_E_INVALID_QUERY_TYPE;
|
|
}
|
|
|
|
if(pcsLanguage->CompareNoCase("WQL") != 0)
|
|
return WBEM_E_INVALID_QUERY_TYPE;
|
|
|
|
//
|
|
// Get the query
|
|
//
|
|
|
|
CCompressedString* pcsQuery;
|
|
|
|
hres = pFilterObj->GetPropAddrByHandle( mstatic_lQueryHandle,
|
|
WMIOBJECT_FLAG_ENCODING_V1,
|
|
&ulFlags,
|
|
(void**)&pcsQuery );
|
|
if( hres != S_OK )
|
|
{
|
|
return WBEM_E_INVALID_OBJECT;
|
|
}
|
|
|
|
LPWSTR wszQuery = pcsQuery->CreateWStringCopy().UnbindPtr();
|
|
|
|
if(wszQuery == NULL)
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
|
|
CVectorDeleteMe<WCHAR> vdm(wszQuery);
|
|
|
|
//
|
|
// Make sure it is parsable
|
|
//
|
|
|
|
CTextLexSource src(wszQuery);
|
|
QL1_Parser parser(&src);
|
|
QL_LEVEL_1_RPN_EXPRESSION* pExp = NULL;
|
|
int nRes = parser.Parse(&pExp);
|
|
if (nRes)
|
|
return WBEM_E_UNPARSABLE_QUERY;
|
|
delete pExp;
|
|
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
HRESULT CPermanentFilter::ObtainToken(IWbemToken** ppToken)
|
|
{
|
|
//
|
|
// Get us a token from the token cache
|
|
//
|
|
|
|
return m_pNamespace->GetToken(GetOwner(), ppToken);
|
|
}
|
|
|
|
void CPermanentFilter::Park()
|
|
{
|
|
if(m_pcsQuery)
|
|
CTemporaryHeap::Free(m_pcsQuery, m_pcsQuery->GetLength());
|
|
m_pcsQuery = NULL;
|
|
}
|