You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
2624 lines
70 KiB
2624 lines
70 KiB
//******************************************************************************
|
|
//
|
|
// FILTPROX.CPP
|
|
//
|
|
// Copyright (C) 1996-1999 Microsoft Corporation
|
|
//
|
|
//******************************************************************************
|
|
|
|
#include "precomp.h"
|
|
#include <stdio.h>
|
|
#include "pragmas.h"
|
|
#include <wbemcomn.h>
|
|
#include "filtprox.h"
|
|
#include <eventrep.h>
|
|
#include <evtools.h>
|
|
#include <wbemdcpl.h>
|
|
#include <newnew.h>
|
|
#include <winntsec.h>
|
|
|
|
#ifdef DBG
|
|
#define _ESSCLI_ASSERT(X) { if (!(X)) { DebugBreak(); } }
|
|
#else
|
|
#define _ESSCLI_ASSERT(X)
|
|
#endif
|
|
|
|
CTempMemoryManager g_TargetsManager;
|
|
|
|
bool TempSetTargets(WBEM_REM_TARGETS* pTargets, CSortedArray* pTrues)
|
|
{
|
|
int nSize = pTrues->Size();
|
|
pTargets->m_lNumTargets = nSize;
|
|
pTargets->m_aTargets = (WBEM_REMOTE_TARGET_ID_TYPE*)
|
|
g_TargetsManager.Allocate(
|
|
sizeof(WBEM_REMOTE_TARGET_ID_TYPE) * nSize);
|
|
if(pTargets->m_aTargets == NULL)
|
|
return false;
|
|
|
|
for(int i = 0; i < nSize; i++)
|
|
{
|
|
pTargets->m_aTargets[i] = (WBEM_REMOTE_TARGET_ID_TYPE)pTrues->GetAt(i);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void TempClearTargets(WBEM_REM_TARGETS* pTargets)
|
|
{
|
|
g_TargetsManager.Free(pTargets->m_aTargets,
|
|
sizeof(WBEM_REMOTE_TARGET_ID_TYPE) * pTargets->m_lNumTargets);
|
|
}
|
|
|
|
|
|
//******************************************************************************
|
|
//******************************************************************************
|
|
// META DATA
|
|
//******************************************************************************
|
|
//******************************************************************************
|
|
|
|
|
|
HRESULT CWrappingMetaData::GetClass(LPCWSTR wszName, IWbemContext* pContext,
|
|
_IWmiObject** ppClass)
|
|
{
|
|
HRESULT hres;
|
|
IWbemClassObject* pObj;
|
|
|
|
*ppClass = NULL;
|
|
|
|
hres = m_pDest->GetClass(wszName, pContext, &pObj);
|
|
|
|
if ( FAILED(hres) )
|
|
{
|
|
return hres;
|
|
}
|
|
|
|
CReleaseMe rm1(pObj);
|
|
return pObj->QueryInterface(IID__IWmiObject, (void**)ppClass);
|
|
}
|
|
|
|
//******************************************************************************
|
|
//******************************************************************************
|
|
// FILTER PROXY MANAGER
|
|
//******************************************************************************
|
|
//******************************************************************************
|
|
|
|
|
|
CFilterProxyManager::CFilterProxyManager(CLifeControl* pControl)
|
|
: CFilterProxyManagerBase( pControl ), m_lRef(0), m_pStub(NULL),
|
|
m_pMetaData(NULL), m_pMultiTarget(NULL), m_pSpecialContext(NULL),
|
|
m_XProxy(this), m_lExtRef(0),
|
|
m_hthreadSend(NULL),
|
|
m_heventDone(NULL),
|
|
m_heventBufferNotFull(NULL),
|
|
m_heventBufferFull(NULL),
|
|
m_heventEventsPending(NULL),
|
|
m_dwLastSentStamp(0),
|
|
m_pMultiTargetStream( NULL )
|
|
{
|
|
}
|
|
|
|
CFilterProxyManager::~CFilterProxyManager()
|
|
{
|
|
StopSendThread();
|
|
|
|
if(m_pMetaData)
|
|
m_pMetaData->Release();
|
|
if(m_pStub)
|
|
m_pStub->Release();
|
|
if(m_pMultiTarget)
|
|
m_pMultiTarget->Release();
|
|
}
|
|
|
|
|
|
ULONG STDMETHODCALLTYPE CFilterProxyManager::AddRef()
|
|
{
|
|
// This is an AddRef from a client. Increment a special counter as well
|
|
// ====================================================================
|
|
InterlockedIncrement(&m_lExtRef);
|
|
|
|
return InterlockedIncrement(&m_lRef);
|
|
}
|
|
|
|
ULONG STDMETHODCALLTYPE CFilterProxyManager::Release()
|
|
{
|
|
// This is a Release from a client. Check if the client has released all
|
|
// references to the proxy, in which case we need to disconnect ourselves
|
|
// ======================================================================
|
|
|
|
if(InterlockedDecrement(&m_lExtRef) == 0)
|
|
{
|
|
EnterCriticalSection(&m_cs);
|
|
IWbemFilterStub* pStub = m_pStub;
|
|
InterlockedIncrement(&m_lRef);
|
|
LeaveCriticalSection(&m_cs);
|
|
|
|
if(pStub)
|
|
pStub->UnregisterProxy(&m_XProxy);
|
|
|
|
InterlockedDecrement(&m_lRef);
|
|
|
|
}
|
|
|
|
long lRef = InterlockedDecrement(&m_lRef);
|
|
if(lRef == 0) delete this;
|
|
return lRef;
|
|
}
|
|
|
|
ULONG STDMETHODCALLTYPE CFilterProxyManager::AddRefProxy()
|
|
{
|
|
// AddRef from proxy.
|
|
return InterlockedIncrement(&m_lRef);
|
|
}
|
|
|
|
ULONG STDMETHODCALLTYPE CFilterProxyManager::ReleaseProxy()
|
|
{
|
|
// Release from proxy.
|
|
long lRef = InterlockedDecrement(&m_lRef);
|
|
if(lRef == 0) delete this;
|
|
return lRef;
|
|
}
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxyManager::QueryInterface(REFIID riid, void** ppv)
|
|
{
|
|
if(riid == IID_IUnknown)
|
|
*ppv = (IUnknown*)this;
|
|
else if(riid == IID_IMarshal)
|
|
*ppv = (IMarshal*)this;
|
|
else if(riid == IID_IWbemFilterProxy || riid == IID_IWbemLocalFilterProxy)
|
|
*ppv = (IWbemLocalFilterProxy*)&m_XProxy;
|
|
else
|
|
return E_NOINTERFACE;
|
|
|
|
((IUnknown*)*ppv)->AddRef();
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxyManager::Initialize(IWbemMetaData* pMetaData,
|
|
IWbemMultiTarget* pMultiTarget)
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
if(m_pMetaData)
|
|
m_pMetaData->Release();
|
|
m_pMetaData = new CWrappingMetaData(pMetaData);
|
|
if(m_pMetaData)
|
|
m_pMetaData->AddRef();
|
|
else
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
|
|
if(m_pMultiTarget)
|
|
m_pMultiTarget->Release();
|
|
m_pMultiTarget = pMultiTarget;
|
|
if(m_pMultiTarget)
|
|
m_pMultiTarget->AddRef();
|
|
|
|
if(GetMainProxy() == NULL)
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT CFilterProxyManager::SetStub(IWbemFilterStub* pStub)
|
|
{
|
|
if(m_pStub)
|
|
m_pStub->Release();
|
|
m_pStub = pStub;
|
|
if(m_pStub)
|
|
m_pStub->AddRef();
|
|
|
|
// Initialize ourselves
|
|
// ====================
|
|
|
|
HRESULT hres = m_pStub->RegisterProxy(&m_XProxy);
|
|
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Failed to register proxy with stub: %X\n", hres));
|
|
return hres;
|
|
}
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxyManager::Lock()
|
|
{
|
|
if(m_Lock.Enter()) // old implementation: == WAIT_OBJECT_0)
|
|
{
|
|
return S_OK;
|
|
}
|
|
else
|
|
return WBEM_E_CRITICAL_ERROR;
|
|
}
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxyManager::Unlock()
|
|
{
|
|
m_Lock.Leave();
|
|
return S_OK;
|
|
}
|
|
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxyManager::AddFilter(IWbemContext* pContext,
|
|
LPCWSTR wszQuery,
|
|
WBEM_REMOTE_TARGET_ID_TYPE idFilter)
|
|
{
|
|
// Parse the query
|
|
// ===============
|
|
|
|
CTextLexSource Source((LPWSTR)wszQuery);
|
|
QL1_Parser Parser(&Source);
|
|
QL_LEVEL_1_RPN_EXPRESSION* pExp;
|
|
if(Parser.Parse(&pExp) != QL1_Parser::SUCCESS)
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Filter proxy unable to parse %S\n", wszQuery));
|
|
return WBEM_E_UNPARSABLE_QUERY;
|
|
}
|
|
|
|
CDeleteMe<QL_LEVEL_1_RPN_EXPRESSION> dm(pExp);
|
|
return AddFilter(pContext, wszQuery, pExp, idFilter);
|
|
}
|
|
|
|
HRESULT CFilterProxyManager::AddFilter(IWbemContext* pContext,
|
|
LPCWSTR wszQuery,
|
|
QL_LEVEL_1_RPN_EXPRESSION* pExp,
|
|
WBEM_REMOTE_TARGET_ID_TYPE idFilter)
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
//
|
|
// Record the filter in our array
|
|
//
|
|
|
|
m_mapQueries[idFilter] = wszQuery;
|
|
|
|
//
|
|
// Add the filter to all our subproxies
|
|
//
|
|
|
|
HRESULT hresGlobal = S_OK;
|
|
for(int i = 0; i < m_apProxies.GetSize(); i++)
|
|
{
|
|
HRESULT hres;
|
|
if(m_apProxies[i] == NULL)
|
|
continue;
|
|
hres = m_apProxies[i]->AddFilter(GetProperContext(pContext),
|
|
wszQuery, pExp, idFilter);
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Unable to add filter %S to sub-proxy in "
|
|
"process %d.\n", wszQuery, GetCurrentProcessId()));
|
|
hresGlobal = hres;
|
|
}
|
|
}
|
|
return hresGlobal;
|
|
}
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxyManager::RemoveFilter(
|
|
IWbemContext* pContext,
|
|
WBEM_REMOTE_TARGET_ID_TYPE idFilter)
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
//
|
|
// Remove the filter from our array
|
|
//
|
|
|
|
m_mapQueries.erase(idFilter);
|
|
|
|
//
|
|
// Remove the filter from all our subproxies
|
|
//
|
|
|
|
HRESULT hresGlobal = S_OK;
|
|
for(int i = 0; i < m_apProxies.GetSize(); i++)
|
|
{
|
|
HRESULT hres;
|
|
if(m_apProxies[i] == NULL)
|
|
continue;
|
|
hres = m_apProxies[i]->RemoveFilter(GetProperContext(pContext),
|
|
idFilter);
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Unable to remove filter from sub-proxy in "
|
|
"process %d.\n", GetCurrentProcessId()));
|
|
hresGlobal = hres;
|
|
}
|
|
}
|
|
return hresGlobal;
|
|
}
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxyManager::RemoveAllFilters(IWbemContext* pContext)
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
//
|
|
// Clear our filter array
|
|
//
|
|
|
|
m_mapQueries.clear();
|
|
|
|
//
|
|
// Remove all filters from all our subproxies
|
|
//
|
|
|
|
HRESULT hresGlobal = S_OK;
|
|
for(int i = 0; i < m_apProxies.GetSize(); i++)
|
|
{
|
|
HRESULT hres;
|
|
if(m_apProxies[i] == NULL)
|
|
continue;
|
|
hres = m_apProxies[i]->RemoveAllFilters(GetProperContext(pContext));
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Unable to remove all filters from sub-proxy "
|
|
"in process %d.\n", GetCurrentProcessId()));
|
|
hresGlobal = hres;
|
|
}
|
|
}
|
|
return hresGlobal;
|
|
}
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxyManager::AllowUtilizeGuarantee()
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
//
|
|
// Definition queries should be sent to the main (first) proxy only
|
|
//
|
|
|
|
if(m_apProxies.GetSize() == 0)
|
|
return WBEM_E_UNEXPECTED;
|
|
|
|
if(m_apProxies[0] == NULL)
|
|
return WBEM_S_FALSE;
|
|
|
|
return m_apProxies[0]->AllowUtilizeGuarantee();
|
|
}
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxyManager::AddDefinitionQuery(
|
|
IWbemContext* pContext, LPCWSTR wszQuery)
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
//
|
|
// Definition queries should be sent to the main (first) proxy only
|
|
//
|
|
|
|
if(m_apProxies.GetSize() == 0)
|
|
return WBEM_E_UNEXPECTED;
|
|
if(m_apProxies[0] == NULL)
|
|
return WBEM_S_FALSE;
|
|
return m_apProxies[0]->AddDefinitionQuery(GetProperContext(pContext),
|
|
wszQuery);
|
|
}
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxyManager::RemoveAllDefinitionQueries(
|
|
IWbemContext* pContext)
|
|
{
|
|
//
|
|
// Definition queries should be sent to the main (first) proxy only
|
|
//
|
|
|
|
if(m_apProxies.GetSize() == 0)
|
|
return WBEM_E_UNEXPECTED;
|
|
if(m_apProxies[0] == NULL)
|
|
return WBEM_S_FALSE;
|
|
|
|
return m_apProxies[0]->RemoveAllDefinitionQueries(
|
|
GetProperContext(pContext));
|
|
}
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxyManager::Disconnect()
|
|
{
|
|
// We must make sure that once Disconnect returns, no events will be
|
|
// delivered
|
|
// =================================================================
|
|
|
|
CInLock<CFilterProxyManager> il(this);
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
if(m_pMetaData)
|
|
m_pMetaData->Release();
|
|
m_pMetaData = NULL;
|
|
|
|
if(m_pStub)
|
|
m_pStub->Release();
|
|
m_pStub = NULL;
|
|
|
|
if(m_pMultiTarget)
|
|
m_pMultiTarget->Release();
|
|
m_pMultiTarget = NULL;
|
|
}
|
|
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
|
|
IWbemContext* CFilterProxyManager::GetProperContext(IWbemContext* pCurrentContext)
|
|
{
|
|
// If we are a real, out-of-proc, proxy, we should not use this context,
|
|
// because the thread that owns it is currently stuck in an RPC call to us
|
|
// and will not be able to process dependent requests. Instead, we must
|
|
// use the "special" context that will cause the thread pool to always
|
|
// create a new thread if needed
|
|
// =======================================================================
|
|
|
|
if(m_pSpecialContext)
|
|
return m_pSpecialContext;
|
|
else
|
|
return pCurrentContext;
|
|
}
|
|
|
|
|
|
HRESULT CFilterProxyManager::SetStatus(long lFlags, HRESULT hResult,
|
|
BSTR strResult, IWbemClassObject* pErrorObj)
|
|
{
|
|
HRESULT hres;
|
|
|
|
|
|
CWbemPtr<IWbemMultiTarget> pMultiTarget;
|
|
|
|
{
|
|
CInLock<CFilterProxyManager> il(this);
|
|
|
|
if(m_pMultiTarget == NULL)
|
|
return WBEM_E_UNEXPECTED;
|
|
|
|
pMultiTarget = m_pMultiTarget;
|
|
}
|
|
|
|
//
|
|
// There is only one reason we support this call: to re-check all
|
|
// subscriptions for validity/security
|
|
//
|
|
|
|
if(lFlags != WBEM_STATUS_REQUIREMENTS ||
|
|
hResult != WBEM_REQUIREMENTS_RECHECK_SUBSCRIPTIONS)
|
|
{
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// Retrieve "special" interface we use for this purpose
|
|
//
|
|
|
|
IWbemEventProviderRequirements* pReq = NULL;
|
|
hres = pMultiTarget->QueryInterface(IID_IWbemEventProviderRequirements,
|
|
(void**)&pReq);
|
|
if(FAILED(hres))
|
|
return hres;
|
|
CReleaseMe rm1(pReq);
|
|
|
|
return pReq->DeliverProviderRequest(hResult);
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxyManager::GetRestrictedSink(
|
|
long lNumQueries,
|
|
const LPCWSTR* awszQueries,
|
|
IUnknown* pCallback,
|
|
IWbemEventSink** ppSink)
|
|
{
|
|
// Basic parameter validation
|
|
|
|
if(lNumQueries < 1)
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
if(ppSink == NULL)
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
|
|
*ppSink = NULL;
|
|
HRESULT hres;
|
|
|
|
//
|
|
// Construct a new filter proxy
|
|
//
|
|
|
|
CFilterProxy* pNewProxy = new CFilterProxy(this, pCallback);
|
|
if(pNewProxy == NULL)
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
|
|
//
|
|
// Add all the definition queries
|
|
//
|
|
|
|
for(long i = 0; i < lNumQueries; i++)
|
|
{
|
|
LPCWSTR wszQuery = awszQueries[i];
|
|
if(wszQuery == NULL)
|
|
{
|
|
delete pNewProxy;
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
}
|
|
|
|
hres = pNewProxy->AddDefinitionQuery(NULL, wszQuery);
|
|
if(FAILED(hres))
|
|
{
|
|
delete pNewProxy;
|
|
return hres;
|
|
}
|
|
}
|
|
|
|
//
|
|
// if we made it here, then all definition queries were correctly added
|
|
// and we can now utilize these definitions for optimizing the filter.
|
|
//
|
|
pNewProxy->AllowUtilizeGuarantee();
|
|
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
for(TIterator it = m_mapQueries.begin(); it != m_mapQueries.end(); it++)
|
|
{
|
|
// Parse the query
|
|
// ===============
|
|
|
|
LPCWSTR wszQuery = it->second;
|
|
WBEM_REMOTE_TARGET_ID_TYPE idFilter = it->first;
|
|
|
|
CTextLexSource Source(wszQuery);
|
|
QL1_Parser Parser(&Source);
|
|
QL_LEVEL_1_RPN_EXPRESSION* pExp;
|
|
if(Parser.Parse(&pExp) != QL1_Parser::SUCCESS)
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Filter proxy unable to parse %S\n",
|
|
wszQuery));
|
|
continue;
|
|
}
|
|
|
|
CDeleteMe<QL_LEVEL_1_RPN_EXPRESSION> dm(pExp);
|
|
pNewProxy->AddFilter(NULL, wszQuery, pExp, idFilter);
|
|
}
|
|
|
|
if(m_apProxies.Add(pNewProxy) < 0)
|
|
{
|
|
delete pNewProxy;
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
}
|
|
|
|
pNewProxy->SetRunning();
|
|
}
|
|
|
|
return pNewProxy->QueryInterface(IID_IWbemEventSink, (void**)ppSink);
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxyManager::GetUnmarshalClass(REFIID riid, void* pv,
|
|
DWORD dwDestContext, void* pvReserved, DWORD mshlFlags,
|
|
CLSID* pClsid)
|
|
{
|
|
*pClsid = CLSID_WbemFilterProxy;
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxyManager::GetMarshalSizeMax(REFIID riid, void* pv,
|
|
DWORD dwDestContext, void* pvReserved, DWORD mshlFlags,
|
|
ULONG* plSize)
|
|
{
|
|
return CoGetMarshalSizeMax(plSize, IID_IWbemFilterStub, m_pStub,
|
|
dwDestContext, pvReserved, mshlFlags);
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxyManager::MarshalInterface(IStream* pStream, REFIID riid,
|
|
void* pv, DWORD dwDestContext, void* pvReserved,
|
|
DWORD mshlFlags)
|
|
{
|
|
return CoMarshalInterface(pStream, IID_IWbemFilterStub,
|
|
m_pStub, dwDestContext, pvReserved, mshlFlags);
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxyManager::UnmarshalInterface(IStream* pStream, REFIID riid,
|
|
void** ppv)
|
|
{
|
|
//
|
|
// before unmarshaling, we must first check we are unmarshaling due to
|
|
// a call from wmi ( or local system rather ). Because we're going to
|
|
// be calling back 'blindly' to the passed in reference, we need to
|
|
// ensure we're not going to 'give away the farm'. Remember that this
|
|
// custom marshaler can be used in any DCOM server, so we must ensure
|
|
// that it can't be misused to get an arbitrary process to call you back
|
|
// at potentially impersonate level.
|
|
//
|
|
|
|
CWbemPtr<IServerSecurity> pSec;
|
|
HRESULT hr = CoGetCallContext( IID_IServerSecurity, (void**)&pSec );
|
|
if ( SUCCEEDED(hr) )
|
|
{
|
|
CNtSid ProcessSid( CNtSid::CURRENT_USER );
|
|
if ( ProcessSid.GetStatus() != CNtSid::NoError )
|
|
return WBEM_E_ACCESS_DENIED;
|
|
|
|
hr = pSec->ImpersonateClient();
|
|
if ( FAILED(hr) )
|
|
return hr;
|
|
|
|
CNtSid CallerSid( CNtSid::CURRENT_THREAD );
|
|
pSec->RevertToSelf();
|
|
|
|
if ( CallerSid.GetStatus() != CNtSid::NoError )
|
|
return WBEM_E_ACCESS_DENIED;
|
|
|
|
PSID pLocalSystemSid;
|
|
|
|
SID_IDENTIFIER_AUTHORITY id = SECURITY_NT_AUTHORITY;
|
|
if ( AllocateAndInitializeSid( &id,
|
|
1,
|
|
SECURITY_LOCAL_SYSTEM_RID,
|
|
0,0,0,0,0,0,0,
|
|
&pLocalSystemSid ) )
|
|
{
|
|
BOOL bOk = EqualSid( CallerSid.GetPtr(), pLocalSystemSid ) ||
|
|
EqualSid( CallerSid.GetPtr(), ProcessSid.GetPtr() );
|
|
|
|
FreeSid( pLocalSystemSid );
|
|
|
|
if ( !bOk )
|
|
return WBEM_E_ACCESS_DENIED;
|
|
}
|
|
else
|
|
{
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
|
|
// Unmarshal the stub pointer
|
|
// ==========================
|
|
|
|
HRESULT hres = CoUnmarshalInterface(pStream, IID_IWbemFilterStub,
|
|
(void**)&m_pStub);
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Unable to unmarshal filter stub: %X\n", hres));
|
|
return hres;
|
|
}
|
|
|
|
// Since we are unmarshalling, this must be a real proxy. Real proxies
|
|
// should use a "special" context when calling back into CIMOM to make sure
|
|
// that they do not cause a deadlock, because a thread in CIMOM is stuck in
|
|
// an RPC call to this proxy and is not processing dependent requests.
|
|
// ========================================================================
|
|
|
|
IWbemCausalityAccess* pCausality = NULL;
|
|
hres = CoCreateInstance(CLSID_WbemContext, NULL, CLSCTX_INPROC_SERVER,
|
|
IID_IWbemCausalityAccess, (void**)&pCausality);
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Unable to create a context object in proxy: "
|
|
"error code 0x%X\n", hres));
|
|
return hres;
|
|
}
|
|
CReleaseMe rm1(pCausality);
|
|
|
|
hres = pCausality->MakeSpecial();
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Unable to construct special context object in "
|
|
"proxy: error code 0x%X\n", hres));
|
|
return hres;
|
|
}
|
|
|
|
hres = pCausality->QueryInterface(IID_IWbemContext,
|
|
(void**)&m_pSpecialContext);
|
|
if(FAILED(hres))
|
|
{
|
|
// Out of memory?
|
|
// ==============
|
|
return hres;
|
|
}
|
|
|
|
// Initialize ourselves
|
|
// ====================
|
|
|
|
hres = m_pStub->RegisterProxy(&m_XProxy);
|
|
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Failed to register proxy with stub: %X\n", hres));
|
|
return hres;
|
|
}
|
|
|
|
//
|
|
// What we must return is our main proxy
|
|
//
|
|
|
|
if(GetMainProxy())
|
|
return GetMainProxy()->QueryInterface(riid, ppv);
|
|
else
|
|
return WBEM_E_CRITICAL_ERROR;
|
|
}
|
|
|
|
INTERNAL IWbemEventSink* CFilterProxyManager::GetMainProxy()
|
|
{
|
|
//
|
|
// We are being asked for the sink to give to the provider. It is possible
|
|
// that we do not have a sink --- that will be the case if the provider
|
|
// has unloaded. In that case, we must be sure to create it!
|
|
//
|
|
|
|
if(m_apProxies.GetSize() == 0)
|
|
{
|
|
CFilterProxy* pMainProxy = new CFilterProxy(this);
|
|
if(pMainProxy == NULL)
|
|
return NULL;
|
|
pMainProxy->SetRunning();
|
|
|
|
if(m_apProxies.Add(pMainProxy) < 0)
|
|
{
|
|
delete pMainProxy;
|
|
return NULL;
|
|
}
|
|
return pMainProxy;
|
|
}
|
|
else
|
|
{
|
|
if(m_apProxies[0] == NULL)
|
|
{
|
|
CFilterProxy* pMainProxy = new CFilterProxy(this);
|
|
if(pMainProxy == NULL)
|
|
return NULL;
|
|
pMainProxy->SetRunning();
|
|
|
|
m_apProxies.SetAt(0, pMainProxy);
|
|
}
|
|
return m_apProxies[0];
|
|
}
|
|
}
|
|
|
|
HRESULT CFilterProxyManager::GetMetaData(RELEASE_ME CWrappingMetaData** ppMeta)
|
|
{
|
|
*ppMeta = m_pMetaData;
|
|
(*ppMeta)->AddRef();
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT CFilterProxyManager::RemoveProxy(CFilterProxy* pProxy)
|
|
{
|
|
//
|
|
// Called when a proxy is fully released by the client, and calls on the
|
|
// manager to self-destruct
|
|
//
|
|
|
|
CFilterProxy* pOldProxy = NULL;
|
|
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
for(int i = 0; i < m_apProxies.GetSize(); i++)
|
|
{
|
|
if(m_apProxies[i] == pProxy)
|
|
{
|
|
RemoveProxyLatency(pProxy);
|
|
m_apProxies.RemoveAt(i, &pOldProxy);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(pOldProxy)
|
|
{
|
|
// We don't do a release because pProxy's refcount is already 0 (which
|
|
// is why we're in this function). Normally RemoveAt would have
|
|
// deleted it, but since we passed in &pOldProxy, it didn't. We do this
|
|
// so pOldProxy doesn't do its final release of the manager which could
|
|
// destruct the manager while we're holding onto the manager's lock.
|
|
delete pOldProxy;
|
|
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
else
|
|
return WBEM_E_NOT_FOUND;
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxyManager::ReleaseMarshalData(IStream* pStream)
|
|
{
|
|
return CoReleaseMarshalData(pStream);
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxyManager::DisconnectObject(DWORD dwReserved)
|
|
{
|
|
// BUGBUG
|
|
return WBEM_E_UNEXPECTED;
|
|
}
|
|
|
|
HRESULT CFilterProxyManager::DeliverEvent(long lNumToSend,
|
|
IWbemClassObject** apEvents,
|
|
WBEM_REM_TARGETS* aTargets,
|
|
long lSDLength, BYTE* pSD)
|
|
{
|
|
//
|
|
// we need to hold the proxy lock when signalling an event.
|
|
// the reason for this is that when a call to disconnect() returns,
|
|
// we can be absolutely sure that no events will be delivered to the
|
|
// stub. Without locking here, just after the check for multitarget,
|
|
// disconnect could be called setting multitarget to null and then
|
|
// returning, however, just after the DeliverEvent call is made.
|
|
//
|
|
|
|
CInLock<CFilterProxyManager> il(this);
|
|
|
|
if(m_pMultiTarget)
|
|
return m_pMultiTarget->DeliverEvent(lNumToSend, apEvents, aTargets,
|
|
lSDLength, pSD);
|
|
else
|
|
return CO_E_OBJNOTCONNECTED;
|
|
}
|
|
|
|
|
|
HRESULT CFilterProxyManager::DeliverEventMT(long lNumToSend,
|
|
IWbemClassObject** apEvents,
|
|
WBEM_REM_TARGETS* aTargets,
|
|
long lSDLength, BYTE* pSD,
|
|
IWbemMultiTarget * pMultiTarget)
|
|
{
|
|
//
|
|
// we need to hold the proxy lock when signalling an event. There are
|
|
// two reasons for this. The first is that during resync of ess, it
|
|
// must ensure that no events are delivered, else they would be lost.
|
|
// the way ess ensures this is by grabbing the locks of all the proxies.
|
|
// The other reason is so that when a call to disconnect() returns,
|
|
// we can be absolutely sure that no events will be delivered to the
|
|
// stub. Without locking here, just after the check for multitarget,
|
|
// disconnect could be called setting multitarget to null and then
|
|
// returning, however, just after the DeliverEvent call is made.
|
|
//
|
|
|
|
// This assertion is for this func to be called in other place than
|
|
// SendThreadProc in the future.
|
|
|
|
_DBG_ASSERT( pMultiTarget );
|
|
|
|
CInLock<CFilterProxyManager> il(this);
|
|
|
|
return pMultiTarget->DeliverEvent(lNumToSend, apEvents, aTargets, lSDLength, pSD);
|
|
}
|
|
|
|
|
|
ULONG CFilterProxyManager::XProxy::AddRef()
|
|
{
|
|
return m_pObject->AddRefProxy();
|
|
}
|
|
|
|
ULONG CFilterProxyManager::XProxy::Release()
|
|
{
|
|
return m_pObject->ReleaseProxy();
|
|
}
|
|
|
|
HRESULT CFilterProxyManager::XProxy::QueryInterface(REFIID riid, void** ppv)
|
|
{
|
|
if(riid == IID_IUnknown || riid == IID_IWbemFilterProxy ||
|
|
riid == IID_IWbemLocalFilterProxy)
|
|
{
|
|
*ppv = (IWbemLocalFilterProxy*)this;
|
|
AddRef();
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
return E_NOINTERFACE;
|
|
}
|
|
}
|
|
|
|
HRESULT CFilterProxyManager::XProxy::Initialize(IWbemMetaData* pMetaData,
|
|
IWbemMultiTarget* pMultiTarget)
|
|
{
|
|
ENTER_API_CALL
|
|
|
|
return m_pObject->Initialize(pMetaData, pMultiTarget);
|
|
|
|
EXIT_API_CALL
|
|
}
|
|
HRESULT CFilterProxyManager::XProxy::Lock() // Deprecated ?
|
|
{
|
|
ENTER_API_CALL
|
|
|
|
return m_pObject->Lock();
|
|
|
|
EXIT_API_CALL
|
|
}
|
|
HRESULT CFilterProxyManager::XProxy::Unlock() // Deprecated ?
|
|
{
|
|
|
|
ENTER_API_CALL
|
|
|
|
return m_pObject->Unlock();
|
|
|
|
EXIT_API_CALL
|
|
}
|
|
HRESULT CFilterProxyManager::XProxy::AddFilter(IWbemContext* pContext,
|
|
LPCWSTR wszQuery,
|
|
WBEM_REMOTE_TARGET_ID_TYPE idFilter)
|
|
{
|
|
ENTER_API_CALL
|
|
|
|
return m_pObject->AddFilter(pContext, wszQuery, idFilter);
|
|
|
|
EXIT_API_CALL
|
|
}
|
|
HRESULT CFilterProxyManager::XProxy::RemoveFilter(IWbemContext* pContext,
|
|
WBEM_REMOTE_TARGET_ID_TYPE idFilter)
|
|
{
|
|
ENTER_API_CALL
|
|
|
|
return m_pObject->RemoveFilter(pContext, idFilter);
|
|
|
|
EXIT_API_CALL
|
|
}
|
|
HRESULT CFilterProxyManager::XProxy::RemoveAllFilters(IWbemContext* pContext)
|
|
{
|
|
ENTER_API_CALL
|
|
|
|
return m_pObject->RemoveAllFilters(pContext);
|
|
|
|
EXIT_API_CALL
|
|
}
|
|
|
|
HRESULT CFilterProxyManager::XProxy::AddDefinitionQuery(IWbemContext* pContext,
|
|
LPCWSTR wszQuery)
|
|
{
|
|
ENTER_API_CALL
|
|
|
|
return m_pObject->AddDefinitionQuery(pContext, wszQuery);
|
|
|
|
EXIT_API_CALL
|
|
}
|
|
|
|
HRESULT CFilterProxyManager::XProxy::AllowUtilizeGuarantee()
|
|
{
|
|
ENTER_API_CALL
|
|
|
|
return m_pObject->AllowUtilizeGuarantee();
|
|
|
|
EXIT_API_CALL
|
|
}
|
|
|
|
HRESULT CFilterProxyManager::XProxy::RemoveAllDefinitionQueries(
|
|
IWbemContext* pContext)
|
|
{
|
|
ENTER_API_CALL
|
|
|
|
return m_pObject->RemoveAllDefinitionQueries(pContext);
|
|
|
|
EXIT_API_CALL
|
|
}
|
|
HRESULT CFilterProxyManager::XProxy::Disconnect()
|
|
{
|
|
ENTER_API_CALL
|
|
|
|
return m_pObject->Disconnect();
|
|
|
|
EXIT_API_CALL
|
|
}
|
|
|
|
HRESULT CFilterProxyManager::XProxy::SetStub(IWbemFilterStub* pStub)
|
|
{
|
|
return m_pObject->SetStub(pStub);
|
|
}
|
|
|
|
HRESULT CFilterProxyManager::XProxy::LocalAddFilter(IWbemContext* pContext,
|
|
LPCWSTR wszQuery,
|
|
void* pExp,
|
|
WBEM_REMOTE_TARGET_ID_TYPE Id)
|
|
{
|
|
return m_pObject->AddFilter(pContext, wszQuery,
|
|
(QL_LEVEL_1_RPN_EXPRESSION*)pExp, Id);
|
|
}
|
|
|
|
HRESULT CFilterProxyManager::XProxy::GetMainSink(IWbemEventSink** ppSink)
|
|
{
|
|
*ppSink = m_pObject->GetMainProxy();
|
|
if(*ppSink)
|
|
{
|
|
(*ppSink)->AddRef();
|
|
return S_OK;
|
|
}
|
|
else
|
|
return E_UNEXPECTED;
|
|
}
|
|
|
|
void CFilterProxyManager::CalcMaxSendLatency()
|
|
{
|
|
LockBatching();
|
|
|
|
DWORD dwLatency = 0xFFFFFFFF;
|
|
|
|
for (CLatencyMapItor i = m_mapLatencies.begin();
|
|
i != m_mapLatencies.end();
|
|
i++)
|
|
{
|
|
if ((*i).second < dwLatency)
|
|
dwLatency = (*i).second;
|
|
}
|
|
|
|
m_dwMaxSendLatency = dwLatency;
|
|
|
|
UnlockBatching();
|
|
}
|
|
|
|
|
|
HRESULT CFilterProxyManager::SetProxyLatency(CFilterProxy *pProxy, DWORD dwLatency)
|
|
{
|
|
LockBatching();
|
|
|
|
BOOL bWasEmpty = m_mapLatencies.size() == 0;
|
|
|
|
// Add this proxy.
|
|
m_mapLatencies[pProxy] = dwLatency;
|
|
|
|
HRESULT hr = S_OK;
|
|
|
|
// If our map was previously empty, start the send thread.
|
|
if ( bWasEmpty )
|
|
{
|
|
m_dwMaxSendLatency = dwLatency;
|
|
|
|
_DBG_ASSERT( NULL == m_hthreadSend );
|
|
|
|
if ( NULL == m_hthreadSend )
|
|
{
|
|
_DBG_ASSERT( NULL == m_pMultiTargetStream );
|
|
|
|
//
|
|
// IWbemMultiTarget interface pointer is mashaled to make the
|
|
// interface pointer available for cross apartment access
|
|
//
|
|
|
|
hr = CoMarshalInterThreadInterfaceInStream( IID_IWbemMultiTarget,
|
|
m_pMultiTarget,
|
|
&m_pMultiTargetStream );
|
|
|
|
if ( SUCCEEDED( hr ) )
|
|
{
|
|
if ( FALSE == StartSendThread( ) )
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Failed to set proxy latency due to thread creation error : 0x%X\n", GetLastError( ) ) );
|
|
m_pMultiTargetStream->Release( );
|
|
m_pMultiTargetStream = NULL;
|
|
hr = E_FAIL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
m_pMultiTargetStream = NULL;
|
|
ERRORTRACE((LOG_ESS, "Failed to set proxy latency due to marshaling error : 0x%X\n", hr ) );
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// If dwLatency is smaller than m_dwMaxSendLatency, set
|
|
// m_dwMaxSendLatency to the new smallest value.
|
|
if (dwLatency < m_dwMaxSendLatency)
|
|
m_dwMaxSendLatency = dwLatency;
|
|
}
|
|
|
|
UnlockBatching();
|
|
|
|
return hr;
|
|
}
|
|
|
|
void CFilterProxyManager::RemoveProxyLatency(CFilterProxy *pProxy)
|
|
{
|
|
LockBatching();
|
|
|
|
// Try to find the proxy.
|
|
CLatencyMapItor item = m_mapLatencies.find(pProxy);
|
|
|
|
// Did we find it?
|
|
if (item != m_mapLatencies.end())
|
|
{
|
|
// Remove it.
|
|
m_mapLatencies.erase(item);
|
|
|
|
// If there are no more proxies that care about batching, stop the
|
|
// send thread.
|
|
if (m_mapLatencies.size() == 0)
|
|
StopSendThread();
|
|
else
|
|
{
|
|
DWORD dwLatency = (*item).second;
|
|
|
|
// If the latency value we just removed is the same as
|
|
// m_dwMaxSendLatency, recalc m_dwMaxSendLatency.
|
|
if (dwLatency == m_dwMaxSendLatency)
|
|
CalcMaxSendLatency();
|
|
}
|
|
}
|
|
|
|
UnlockBatching();
|
|
}
|
|
|
|
|
|
BOOL CFilterProxyManager::StartSendThread()
|
|
{
|
|
LockBatching();
|
|
|
|
if ( NULL == m_hthreadSend )
|
|
{
|
|
DWORD dwID;
|
|
|
|
do
|
|
{
|
|
m_heventDone = CreateEvent( NULL, FALSE, FALSE, NULL );
|
|
if ( NULL == m_heventDone )
|
|
{
|
|
break;
|
|
}
|
|
|
|
m_heventBufferNotFull = CreateEvent( NULL, TRUE, TRUE, NULL );
|
|
if ( NULL == m_heventBufferNotFull )
|
|
{
|
|
break;
|
|
}
|
|
|
|
m_heventBufferFull = CreateEvent( NULL, TRUE, FALSE, NULL );
|
|
if ( NULL == m_heventBufferFull )
|
|
{
|
|
break;
|
|
}
|
|
|
|
m_heventEventsPending = CreateEvent( NULL, TRUE, FALSE, NULL );
|
|
if ( NULL == m_heventEventsPending )
|
|
{
|
|
break;
|
|
}
|
|
|
|
m_hthreadSend = CreateThread( NULL,
|
|
0,
|
|
(LPTHREAD_START_ROUTINE) SendThreadProc,
|
|
this,
|
|
0,
|
|
&dwID );
|
|
}
|
|
while( FALSE );
|
|
|
|
if ( NULL == m_hthreadSend )
|
|
{
|
|
if (m_heventDone)
|
|
{
|
|
CloseHandle(m_heventDone);
|
|
m_heventDone = NULL;
|
|
}
|
|
|
|
if (m_heventBufferNotFull)
|
|
{
|
|
CloseHandle(m_heventBufferNotFull);
|
|
m_heventBufferNotFull = NULL;
|
|
}
|
|
|
|
if (m_heventBufferFull)
|
|
{
|
|
CloseHandle(m_heventBufferFull);
|
|
m_heventBufferFull = NULL;
|
|
}
|
|
|
|
if (m_heventEventsPending)
|
|
{
|
|
CloseHandle(m_heventEventsPending);
|
|
m_heventEventsPending = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
UnlockBatching();
|
|
|
|
return ( NULL != m_hthreadSend );
|
|
}
|
|
|
|
void CFilterProxyManager::StopSendThread()
|
|
{
|
|
LockBatching();
|
|
|
|
if (m_hthreadSend && m_heventDone)
|
|
{
|
|
SetEvent(m_heventDone);
|
|
WaitForSingleObject(m_hthreadSend, 3000);
|
|
CloseHandle(m_hthreadSend);
|
|
m_hthreadSend = NULL;
|
|
}
|
|
|
|
if (m_heventDone)
|
|
{
|
|
CloseHandle(m_heventDone);
|
|
m_heventDone = NULL;
|
|
}
|
|
|
|
if (m_heventBufferNotFull)
|
|
{
|
|
CloseHandle(m_heventBufferNotFull);
|
|
m_heventBufferNotFull = NULL;
|
|
}
|
|
|
|
if (m_heventBufferFull)
|
|
{
|
|
CloseHandle(m_heventBufferFull);
|
|
m_heventBufferFull = NULL;
|
|
}
|
|
|
|
if (m_heventEventsPending)
|
|
{
|
|
CloseHandle(m_heventEventsPending);
|
|
m_heventEventsPending = NULL;
|
|
}
|
|
|
|
UnlockBatching();
|
|
}
|
|
|
|
|
|
DWORD WINAPI CFilterProxyManager::SendThreadProc(CFilterProxyManager *pThis)
|
|
{
|
|
HANDLE hWait[2] = { pThis->m_heventDone, pThis->m_heventEventsPending },
|
|
hwaitSendLatency[2] = { pThis->m_heventDone, pThis->m_heventBufferFull },
|
|
heventBufferNotFull = pThis->m_heventBufferNotFull;
|
|
HRESULT hres;
|
|
IWbemMultiTarget * pMultiTarget = NULL;
|
|
|
|
_DBG_ASSERT( pThis->m_pMultiTargetStream );
|
|
|
|
if ( NULL == pThis->m_pMultiTargetStream )
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
CoInitializeEx( NULL, COINIT_MULTITHREADED );
|
|
|
|
//
|
|
// IWbemMultiTarget interface pointer is unmarshaled to use in this
|
|
// thread (in case of cross apartment).
|
|
//
|
|
|
|
hres = CoGetInterfaceAndReleaseStream( pThis->m_pMultiTargetStream,
|
|
IID_IWbemMultiTarget,
|
|
( void ** )&pMultiTarget );
|
|
|
|
if( FAILED( hres ) )
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Failed to run batching thread due to unmarshaling errors: 0x%X\n", hres));
|
|
// pThis->m_pMultiTargetStream->Release( );
|
|
pThis->m_pMultiTargetStream = NULL;
|
|
CoUninitialize( );
|
|
return 1;
|
|
}
|
|
|
|
pThis->m_pMultiTargetStream = NULL;
|
|
|
|
_DBG_ASSERT( pMultiTarget );
|
|
|
|
while (WaitForMultipleObjects(2, hWait, FALSE, INFINITE) != 0)
|
|
{
|
|
// If we have a send latency, wait for that time or until the send
|
|
// buffer is full. If the done event fires, get out.
|
|
if (pThis->m_dwMaxSendLatency)
|
|
{
|
|
if (WaitForMultipleObjects(2, hwaitSendLatency, FALSE,
|
|
pThis->m_dwMaxSendLatency) == 0)
|
|
break;
|
|
|
|
// Reset m_heventBufferFull.
|
|
ResetEvent(hwaitSendLatency[1]);
|
|
}
|
|
|
|
CInCritSec csBuffer(&pThis->m_csBuffer);
|
|
int nItems = pThis->m_batch.GetItemCount();
|
|
|
|
hres = pThis->DeliverEventMT(
|
|
nItems,
|
|
pThis->m_batch.GetObjs(),
|
|
pThis->m_batch.GetTargets(),
|
|
0,
|
|
&CFilterProxy::mstatic_EmptySD,
|
|
pMultiTarget);
|
|
|
|
// Increment this so the filter proxies will know to clear out their
|
|
// buffer size when they next get an event to batch.
|
|
pThis->m_dwLastSentStamp++;
|
|
|
|
pThis->m_batch.RemoveAll();
|
|
|
|
SetEvent(heventBufferNotFull);
|
|
|
|
// Reset m_heventEventsPending
|
|
ResetEvent(hWait[1]);
|
|
}
|
|
|
|
// Make sure our batch buffer is empty before we exit.
|
|
CInCritSec csBuffer(&pThis->m_csBuffer);
|
|
int nItems = pThis->m_batch.GetItemCount();
|
|
|
|
if ( nItems )
|
|
{
|
|
pThis->DeliverEventMT(
|
|
nItems,
|
|
pThis->m_batch.GetObjs(),
|
|
pThis->m_batch.GetTargets(),
|
|
0,
|
|
&CFilterProxy::mstatic_EmptySD,
|
|
pMultiTarget);
|
|
}
|
|
|
|
CoUninitialize( );
|
|
|
|
return 0;
|
|
}
|
|
|
|
DWORD CFilterProxyManager::GetLastSentStamp()
|
|
{
|
|
return m_dwLastSentStamp;
|
|
}
|
|
|
|
//*****************************************************************************
|
|
//*****************************************************************************
|
|
//
|
|
// FILTER PROXY
|
|
//
|
|
//*****************************************************************************
|
|
//*****************************************************************************
|
|
|
|
CTimeKeeper CFilterProxy::mstatic_TimeKeeper;
|
|
BYTE CFilterProxy::mstatic_EmptySD = 0;
|
|
|
|
CFilterProxy::CFilterProxy(CFilterProxyManager* pManager, IUnknown* pCallback)
|
|
: m_lRef(0), m_pManager(pManager), m_pMetaData(NULL),
|
|
m_lSDLength(0), m_pSD(&mstatic_EmptySD), m_pProvider(NULL),
|
|
m_pQuerySink(NULL), m_bRunning(false),
|
|
m_typeBatch(WBEM_FLAG_MUST_NOT_BATCH), m_bUtilizeGuarantee(false),
|
|
m_dwCurrentBufferSize(0), m_bBatching(FALSE),
|
|
m_wSourceVersion(0), m_wAppliedSourceVersion(0)
|
|
{
|
|
m_SourceDefinition.SetBool(FALSE);
|
|
if(m_pManager)
|
|
{
|
|
m_pManager->AddRef();
|
|
m_pManager->GetMetaData(&m_pMetaData);
|
|
}
|
|
|
|
if(pCallback)
|
|
{
|
|
pCallback->QueryInterface(IID_IWbemEventProvider, (void**)&m_pProvider);
|
|
pCallback->QueryInterface(IID_IWbemEventProviderQuerySink,
|
|
(void**)&m_pQuerySink);
|
|
}
|
|
}
|
|
|
|
CFilterProxy::~CFilterProxy()
|
|
{
|
|
if (m_pMetaData)
|
|
m_pMetaData->Release();
|
|
|
|
if (m_pManager)
|
|
m_pManager->Release();
|
|
}
|
|
|
|
|
|
ULONG STDMETHODCALLTYPE CFilterProxy::AddRef()
|
|
{
|
|
return InterlockedIncrement(&m_lRef);
|
|
}
|
|
|
|
ULONG STDMETHODCALLTYPE CFilterProxy::Release()
|
|
{
|
|
//
|
|
// CFilterProxy is deleted by CFilterProxyManager --- it never goes away
|
|
// on a Release
|
|
//
|
|
|
|
long lRef = InterlockedDecrement(&m_lRef);
|
|
if(lRef == 0)
|
|
{
|
|
//
|
|
// Inform the manager that we are no longer needed. This call can
|
|
// destroy this object!
|
|
//
|
|
|
|
m_pManager->RemoveProxy(this);
|
|
}
|
|
|
|
return lRef;
|
|
}
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxy::QueryInterface(REFIID riid, void** ppv)
|
|
{
|
|
if( riid == IID_IUnknown ||
|
|
riid == IID_IWbemObjectSink ||
|
|
riid == IID_IWbemEventSink)
|
|
{
|
|
*ppv = (IWbemEventSink*)this;
|
|
}
|
|
else if(riid == IID_IMarshal)
|
|
{
|
|
*ppv = (IMarshal*)this;
|
|
}
|
|
else
|
|
return E_NOINTERFACE;
|
|
|
|
((IUnknown*)*ppv)->AddRef();
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT CFilterProxy::Lock()
|
|
{
|
|
return m_pManager->Lock();
|
|
}
|
|
|
|
HRESULT CFilterProxy::Unlock()
|
|
{
|
|
return m_pManager->Unlock();
|
|
}
|
|
|
|
HRESULT CFilterProxy::SetRunning()
|
|
{
|
|
HRESULT hres;
|
|
|
|
bool bActive = false;
|
|
IWbemEventProvider* pProvider = NULL;
|
|
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
if(m_bRunning)
|
|
return WBEM_S_FALSE;
|
|
else
|
|
{
|
|
m_bRunning = true;
|
|
if(m_pProvider)
|
|
{
|
|
bActive = (IsActive() == WBEM_S_NO_ERROR);
|
|
pProvider = m_pProvider;
|
|
pProvider->AddRef();
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// If here, we are just now marking it for running. Notify the callback if
|
|
// there are any sinks
|
|
//
|
|
|
|
if(bActive && pProvider)
|
|
{
|
|
hres = pProvider->ProvideEvents(NULL, WBEM_FLAG_START_PROVIDING);
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Restricted sink refused to stop "
|
|
"error code 0x%X\n", hres));
|
|
}
|
|
}
|
|
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
HRESULT CFilterProxy::AddFilter(IWbemContext* pContext,
|
|
LPCWSTR wszQuery,
|
|
QL_LEVEL_1_RPN_EXPRESSION* pExp,
|
|
WBEM_REMOTE_TARGET_ID_TYPE idFilter)
|
|
{
|
|
HRESULT hres;
|
|
|
|
|
|
// Compile the query
|
|
// =================
|
|
|
|
CContextMetaData MetaData(m_pMetaData, pContext);
|
|
|
|
CEvalTree Tree;
|
|
hres = Tree.CreateFromQuery( &MetaData, pExp, WBEM_FLAG_MANDATORY_MERGE );
|
|
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Filter proxy unable to parse %S, "
|
|
"error code: %X\n", wszQuery, hres));
|
|
return hres;
|
|
}
|
|
|
|
//
|
|
// merge the query into the rest of the filter.
|
|
//
|
|
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
if ( m_bUtilizeGuarantee )
|
|
{
|
|
//
|
|
// Utilize source definition
|
|
// =========================
|
|
|
|
//
|
|
// assert that our source definition hasn't changed since the last
|
|
// time a filter was added. This would be bad, since the tree
|
|
// doesn't account for the new source queries. Also assert that
|
|
// the source tree is valid and is not empty. ( These last two may
|
|
// have to be removed in the future. For now they shouldn't be
|
|
// false )
|
|
//
|
|
|
|
_ESSCLI_ASSERT( m_wAppliedSourceVersion == 0 ||
|
|
m_wAppliedSourceVersion == m_wSourceVersion );
|
|
_ESSCLI_ASSERT( m_SourceDefinition.IsValid() );
|
|
_ESSCLI_ASSERT( !m_SourceDefinition.IsFalse() );
|
|
|
|
hres = Tree.UtilizeGuarantee(m_SourceDefinition, &MetaData);
|
|
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS,
|
|
"Filter proxy unable to utilize guarantee for %S, "
|
|
"error code: %X\n", wszQuery, hres));
|
|
return hres;
|
|
}
|
|
|
|
//
|
|
// Check if anything is left of it
|
|
//
|
|
|
|
if(!Tree.IsValid())
|
|
{
|
|
//
|
|
// Utilization of the guarantee shows that this filter cannot
|
|
// be satisftied by events coming through this proxy
|
|
//
|
|
|
|
return WBEM_S_FALSE;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Add consumer information to it
|
|
//
|
|
|
|
Tree.Rebase((QueryID)idFilter);
|
|
|
|
#ifdef DUMP_DEBUG_TREES
|
|
FILE* f = fopen("c:\\try.log", "a");
|
|
fprintf(f, "\n\nAdding filter\n");
|
|
Tree.Dump(f);
|
|
fprintf(f, " to existing filter: \n");
|
|
m_Filter.Dump(f);
|
|
#endif
|
|
|
|
hres = m_Filter.CombineWith(Tree, &MetaData, EVAL_OP_COMBINE);
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Filter proxy unable to combine %S with the "
|
|
"rest, error code: %X\n", wszQuery, hres));
|
|
return hres;
|
|
}
|
|
|
|
m_wAppliedSourceVersion = m_wSourceVersion;
|
|
}
|
|
|
|
|
|
//
|
|
// Now, we need to notify the provider of a new filter being issued
|
|
//
|
|
|
|
IWbemEventProviderQuerySink* pQuerySink = NULL;
|
|
IWbemEventProvider* pProvider = NULL;
|
|
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
if(m_pQuerySink)
|
|
{
|
|
pQuerySink = m_pQuerySink;
|
|
pQuerySink->AddRef();
|
|
}
|
|
|
|
if(m_pProvider)
|
|
{
|
|
pProvider = m_pProvider;
|
|
pProvider->AddRef();
|
|
}
|
|
}
|
|
|
|
//
|
|
// Call provider's NewQuery, if supported
|
|
//
|
|
|
|
if(pQuerySink)
|
|
{
|
|
hres = pQuerySink->NewQuery(idFilter, L"WQL", (LPWSTR)wszQuery);
|
|
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Restricted sink refused consumer "
|
|
"registration query %S: error code 0x%X\n",
|
|
wszQuery, hres));
|
|
|
|
// Too bad --- restricted sinks cannot veto subscriptions
|
|
}
|
|
}
|
|
|
|
//
|
|
// If we are adding this filter to a running proxy, and this is the very
|
|
// first filter on it, we should call ProvideEvents immediately. Not so if
|
|
// we are configuring a proxy that is not running yet --- in that case, we
|
|
// need to wait until all outstanding filters have been put in place
|
|
//
|
|
|
|
if(m_bRunning && (IsActive() == WBEM_S_FALSE) && pProvider)
|
|
{
|
|
hres = pProvider->ProvideEvents((IWbemObjectSink*)this,
|
|
WBEM_FLAG_START_PROVIDING);
|
|
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Restricted sink refused a call to "
|
|
"ProvideEvents with 0x%X\n", hres));
|
|
}
|
|
}
|
|
|
|
#ifdef DUMP_DEBUG_TREES
|
|
fprintf(f, " to obtain: \n");
|
|
m_Filter.Dump(f);
|
|
fclose(f);
|
|
#endif
|
|
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
HRESULT CFilterProxy::RemoveFilter(IWbemContext* pContext,
|
|
WBEM_REMOTE_TARGET_ID_TYPE idFilter)
|
|
{
|
|
HRESULT hres;
|
|
|
|
IWbemEventProviderQuerySink* pQuerySink = NULL;
|
|
IWbemEventProvider* pProvider = NULL;
|
|
|
|
bool bActive;
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
if(m_pQuerySink)
|
|
{
|
|
pQuerySink = m_pQuerySink;
|
|
pQuerySink->AddRef();
|
|
}
|
|
|
|
if(m_pProvider)
|
|
{
|
|
pProvider = m_pProvider;
|
|
pProvider->AddRef();
|
|
}
|
|
|
|
hres = m_Filter.RemoveIndex(idFilter);
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Unable to remove index %d from the filter "
|
|
"proxy\n", idFilter));
|
|
return hres;
|
|
}
|
|
|
|
CContextMetaData MetaData(m_pMetaData, pContext);
|
|
|
|
hres = m_Filter.Optimize(&MetaData);
|
|
if(FAILED(hres))
|
|
return hres;
|
|
|
|
bActive = (IsActive() == WBEM_S_NO_ERROR);
|
|
}
|
|
|
|
//
|
|
// Call provider's NewQuery, if supported
|
|
//
|
|
|
|
if(pQuerySink)
|
|
{
|
|
hres = pQuerySink->CancelQuery(idFilter);
|
|
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Restricted sink refused consumer "
|
|
"registration query cancellation: error code 0x%X\n",
|
|
hres));
|
|
}
|
|
}
|
|
|
|
//
|
|
// If we are left with no queries, notify provider of that fact
|
|
//
|
|
|
|
if(!bActive && pProvider)
|
|
{
|
|
hres = pProvider->ProvideEvents(NULL, WBEM_FLAG_STOP_PROVIDING);
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Restricted sink refused to stop "
|
|
"error code 0x%X\n", hres));
|
|
}
|
|
}
|
|
|
|
#ifdef DUMP_DEBUG_TREES
|
|
FILE* f = fopen("c:\\try.log", "a");
|
|
fprintf(f, "Removed at %d to obtain: \n", idFilter);
|
|
m_Filter.Dump(f);
|
|
fclose(f);
|
|
#endif
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
HRESULT CFilterProxy::RemoveAllFilters(IWbemContext* pContext)
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
m_wAppliedSourceVersion = 0;
|
|
if(!m_Filter.Clear())
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
HRESULT CFilterProxy::AllowUtilizeGuarantee()
|
|
{
|
|
//
|
|
// ess shouldn't be calling this function if the tree is invalid.
|
|
//
|
|
_DBG_ASSERT( m_SourceDefinition.IsValid() );
|
|
|
|
//
|
|
// ess thinks its o.k. to utilize the guarantee, however there are cases
|
|
// where the soruce definition could still be false ( e.g. when there are
|
|
// no source definition queries or when all of the source definition
|
|
// queries are contradictions ).
|
|
//
|
|
|
|
CInCritSec ics(&m_cs);
|
|
|
|
if ( !m_SourceDefinition.IsFalse() )
|
|
{
|
|
m_bUtilizeGuarantee = true;
|
|
}
|
|
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
HRESULT CFilterProxy::AddDefinitionQuery( IWbemContext* pContext,
|
|
LPCWSTR wszQuery )
|
|
{
|
|
HRESULT hres;
|
|
|
|
// Compile the query
|
|
// =================
|
|
|
|
CContextMetaData MetaData(m_pMetaData, pContext);
|
|
|
|
CEvalTree Tree;
|
|
hres = Tree.CreateFromQuery( &MetaData,
|
|
wszQuery,
|
|
WBEM_FLAG_MANDATORY_MERGE,
|
|
0x7FFFFFFF ); // no limit
|
|
if(FAILED(hres))
|
|
{
|
|
return hres;
|
|
}
|
|
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
//
|
|
// we shouldn't be adding definition queries when there are currently
|
|
// existing filters.
|
|
//
|
|
_ESSCLI_ASSERT( m_Filter.IsFalse() );
|
|
|
|
// Merge the query into the rest
|
|
// =============================
|
|
|
|
hres = m_SourceDefinition.CombineWith(Tree, &MetaData, EVAL_OP_OR,
|
|
WBEM_FLAG_MANDATORY_MERGE);
|
|
if(FAILED(hres))
|
|
return hres;
|
|
|
|
m_wSourceVersion++;
|
|
}
|
|
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
HRESULT CFilterProxy::RemoveAllDefinitionQueries( IWbemContext* pContext)
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
m_wSourceVersion = 0;
|
|
m_SourceDefinition.SetBool(FALSE);
|
|
m_bUtilizeGuarantee = false;
|
|
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
HRESULT CFilterProxy::ProcessOne( IUnknown* pUnk,
|
|
long lSDLength,
|
|
BYTE* pSD )
|
|
{
|
|
//
|
|
// NOTE: not in a critical section yet
|
|
//
|
|
|
|
HRESULT hres;
|
|
|
|
//
|
|
// Check overall validity
|
|
//
|
|
|
|
if( pUnk == NULL )
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Event provider returned a NULL event!\n"));
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
}
|
|
|
|
CWbemObject* pObj = (CWbemObject*)(IWbemClassObject*)pUnk;
|
|
|
|
if( pObj->IsObjectInstance() != WBEM_S_NO_ERROR )
|
|
{
|
|
ERRORTRACE((LOG_ESS, "CLASS object received from event provider!\n"));
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// Run the event through the filter
|
|
//
|
|
|
|
CSortedArray aTrues, aSourceTrues;
|
|
CFilterProxyManager* pManager = NULL;
|
|
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
hres = FilterEvent( pObj, aTrues );
|
|
|
|
if ( hres == WBEM_S_NO_ERROR )
|
|
{
|
|
_DBG_ASSERT( aTrues.Size() > 0 );
|
|
}
|
|
else
|
|
{
|
|
return hres;
|
|
}
|
|
|
|
pManager = m_pManager;
|
|
|
|
if( pManager )
|
|
{
|
|
pManager->AddRef();
|
|
}
|
|
else
|
|
{
|
|
return WBEM_S_FALSE;
|
|
}
|
|
}
|
|
|
|
CReleaseMe rm2(pManager);
|
|
|
|
//
|
|
// the event has made it through the filter ..
|
|
//
|
|
|
|
SetGenerationTime(pObj);
|
|
|
|
if (IsBatching())
|
|
{
|
|
BatchEvent((IWbemClassObject*) pUnk, &aTrues);
|
|
|
|
hres = S_OK;
|
|
}
|
|
else
|
|
{
|
|
// Some delivery is required --- construct the blob and the targets
|
|
// ================================================================
|
|
|
|
WBEM_REM_TARGETS RemTargets;
|
|
if(!TempSetTargets(&RemTargets, &aTrues))
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
|
|
hres = pManager->DeliverEvent(1, (IWbemClassObject**)&pObj,
|
|
&RemTargets, lSDLength, pSD);
|
|
TempClearTargets(&RemTargets);
|
|
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Filter stub failed to process an event: "
|
|
"0x%X\n", hres));
|
|
}
|
|
}
|
|
|
|
return hres;
|
|
}
|
|
|
|
|
|
|
|
void CFilterProxy::SetGenerationTime(_IWmiObject* pObj)
|
|
{
|
|
mstatic_TimeKeeper.DecorateObject(pObj);
|
|
}
|
|
|
|
void CFilterProxyManager::AddEvent(
|
|
IWbemClassObject *pObj,
|
|
CSortedArray *pTrues)
|
|
{
|
|
LockBatching();
|
|
|
|
BOOL bWasEmpty = m_batch.GetItemCount() == 0;
|
|
|
|
m_batch.AddEvent(pObj, pTrues);
|
|
|
|
if (bWasEmpty)
|
|
SetEvent(m_heventEventsPending);
|
|
|
|
UnlockBatching();
|
|
}
|
|
|
|
void CFilterProxyManager::WaitForEmptyBatch()
|
|
{
|
|
LockBatching();
|
|
|
|
// Once we get the lock and the batch has already been cleared out, we
|
|
// don't need to do anything else.
|
|
if (m_batch.GetItemCount() == 0)
|
|
{
|
|
UnlockBatching();
|
|
|
|
return;
|
|
}
|
|
|
|
// We need to wait for the send thread to finish sending what's
|
|
// in our buffer.
|
|
|
|
// Wake up the send latency thread if necessary.
|
|
if (m_dwMaxSendLatency)
|
|
SetEvent(m_heventBufferFull);
|
|
|
|
// So we'll block until the send thread sets the event.
|
|
ResetEvent(m_heventBufferNotFull);
|
|
|
|
UnlockBatching();
|
|
|
|
WaitForSingleObject(m_heventBufferNotFull, INFINITE);
|
|
}
|
|
|
|
void CFilterProxy::BatchEvent(
|
|
IWbemClassObject *pObj,
|
|
CSortedArray *pTrues)
|
|
{
|
|
BOOL bRet = FALSE;
|
|
_IWmiObject *pWmiObj = (_IWmiObject*) pObj;
|
|
DWORD dwObjSize = 0;
|
|
|
|
pWmiObj->GetObjectMemory(
|
|
NULL,
|
|
0,
|
|
&dwObjSize);
|
|
|
|
CInCritSec ics(&m_cs);
|
|
|
|
// See if the manager has sent off its batch of events since we last
|
|
// batched an event.
|
|
if (m_dwLastSentStamp != m_pManager->GetLastSentStamp())
|
|
m_dwCurrentBufferSize = 0;
|
|
|
|
// See if we have enough room to add our event.
|
|
if (m_dwCurrentBufferSize >= m_dwMaxBufferSize)
|
|
{
|
|
m_pManager->WaitForEmptyBatch();
|
|
m_dwCurrentBufferSize = 0;
|
|
}
|
|
|
|
m_dwCurrentBufferSize += dwObjSize;
|
|
|
|
m_dwLastSentStamp = m_pManager->GetLastSentStamp();
|
|
m_pManager->AddEvent(pObj, pTrues);
|
|
}
|
|
|
|
HRESULT CFilterProxy::FilterEvent( _IWmiObject* pObj, CSortedArray& raTrues )
|
|
{
|
|
HRESULT hr;
|
|
|
|
//
|
|
// evaluate
|
|
//
|
|
|
|
try
|
|
{
|
|
//
|
|
// this code is in a try catch because if a provider generates
|
|
// events that it has not registered to, then we do bad things to
|
|
// class objects. A potential fix could be do extra checking on
|
|
// our part, but is expensive when using the public interfaces. A
|
|
// more advantageous fix should be making the class object code
|
|
// perform the checking for us ( e.g. when we ask for a property
|
|
// using an invalid handle, etc ). It can do this checking much
|
|
// faster. When this checking is performed by the class object
|
|
// code, we should remove this try catch. see RAID 166026
|
|
//
|
|
|
|
hr = m_Filter.Evaluate( pObj, raTrues );
|
|
}
|
|
catch( ... )
|
|
{
|
|
//
|
|
// check to see if the provider is generating an event its not
|
|
// supposed to. If so, then handle AV and return error, else
|
|
// rethrow - there's something else wrong.
|
|
//
|
|
|
|
CSortedArray aSourceTrues;
|
|
|
|
hr = m_SourceDefinition.Evaluate( pObj, aSourceTrues );
|
|
|
|
if ( SUCCEEDED(hr) && aSourceTrues.Size() == 0 )
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Filter Proxy encountered case where "
|
|
"event provider is signaling events that are not "
|
|
"covered by its registration!!\n"));
|
|
|
|
hr = WBEM_E_INVALID_OBJECT;
|
|
}
|
|
else
|
|
{
|
|
throw;
|
|
}
|
|
}
|
|
|
|
//
|
|
// check events that make it through the filter against source definition.
|
|
// if we're not utilizing guarantee, then there's no need to check the
|
|
// event against the source definition because its already factored into
|
|
// the filter.
|
|
//
|
|
|
|
if (SUCCEEDED(hr) && raTrues.Size() == 0 )
|
|
{
|
|
hr = WBEM_S_FALSE;
|
|
}
|
|
else if ( SUCCEEDED(hr) && m_bUtilizeGuarantee )
|
|
{
|
|
//
|
|
// run the event through the source tree to ensure that the
|
|
// provider is providing the events its supposed to.
|
|
//
|
|
|
|
CSortedArray aSourceTrues;
|
|
|
|
hr = m_SourceDefinition.Evaluate( pObj, aSourceTrues );
|
|
|
|
if ( SUCCEEDED(hr) && aSourceTrues.Size() == 0 )
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Filter Proxy encountered case where "
|
|
"event provider is signaling events that are not "
|
|
"covered by its registration!!\n"));
|
|
|
|
hr = WBEM_E_INVALID_OBJECT;
|
|
}
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
HRESULT CFilterProxy::BatchMany(long nEvents, IUnknown **ppObjects)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
for ( long i = 0; i < nEvents && SUCCEEDED(hr); i++ )
|
|
{
|
|
//
|
|
// Check overall validity
|
|
//
|
|
|
|
if( ppObjects[i] == NULL )
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Event provider returned a NULL event!\n"));
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
}
|
|
|
|
CWbemObject *pObj = (CWbemObject*)(IWbemClassObject*)ppObjects[i];
|
|
|
|
if( pObj->IsObjectInstance() != WBEM_S_NO_ERROR )
|
|
{
|
|
ERRORTRACE((LOG_ESS, "CLASS object received from event provider!\n"));
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// Run the event through the filter
|
|
//
|
|
|
|
CInCritSec ics(&m_cs);
|
|
CSortedArray aTrues;
|
|
|
|
hr = FilterEvent( pObj, aTrues );
|
|
|
|
if ( hr == WBEM_S_NO_ERROR )
|
|
{
|
|
_DBG_ASSERT( aTrues.Size() > 0 );
|
|
|
|
//
|
|
// Delivery is required --- add this event to the list
|
|
//
|
|
|
|
SetGenerationTime(pObj);
|
|
BatchEvent(pObj, &aTrues);
|
|
}
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
class CDeleteTargetsArray
|
|
{
|
|
protected:
|
|
WBEM_REM_TARGETS *m_pData;
|
|
int *m_piSize;
|
|
|
|
public:
|
|
CDeleteTargetsArray(WBEM_REM_TARGETS *pData, int *piSize) :
|
|
m_pData(pData),
|
|
m_piSize(piSize)
|
|
{
|
|
}
|
|
|
|
~CDeleteTargetsArray()
|
|
{
|
|
int nSize = *m_piSize;
|
|
|
|
for (DWORD i = 0; i < nSize; i++)
|
|
TempClearTargets(m_pData + i);
|
|
}
|
|
};
|
|
|
|
HRESULT CFilterProxy::ProcessMany(long lNumObjects,
|
|
IUnknown** apObjects,
|
|
long lSDLength, BYTE* pSD)
|
|
{
|
|
//
|
|
// NOTE: not in critical section
|
|
//
|
|
|
|
HRESULT hres;
|
|
|
|
if (IsBatching())
|
|
return BatchMany(lNumObjects, apObjects);
|
|
|
|
//
|
|
// Allocate appropriate arrays on the stack
|
|
//
|
|
|
|
CTempArray<IWbemClassObject*> apEventsToSend;
|
|
INIT_TEMP_ARRAY(apEventsToSend, lNumObjects);
|
|
if(apEventsToSend == NULL)
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
|
|
CTempArray<WBEM_REM_TARGETS> aTargetsToSend;
|
|
INIT_TEMP_ARRAY(aTargetsToSend, lNumObjects);
|
|
if(aTargetsToSend == NULL)
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
|
|
int lNumToSend = 0;
|
|
|
|
// Make sure the array gets cleaned up.
|
|
CDeleteTargetsArray deleteMe(aTargetsToSend, &lNumToSend);
|
|
|
|
//
|
|
// Iterate over events supplied and move those that need to be delivered
|
|
// into delivery arrays
|
|
//
|
|
|
|
CFilterProxyManager* pManager = NULL;
|
|
{
|
|
//
|
|
// We could choose a smaller window, but I am betting that the cost of
|
|
// entering and exiting the cs many times will outweigh the benefits
|
|
// of slightly smaller windows
|
|
//
|
|
|
|
CInCritSec ics(&m_cs);
|
|
|
|
for(long i = 0; i < lNumObjects; i++)
|
|
{
|
|
//
|
|
// Check overall validity
|
|
//
|
|
|
|
if( apObjects[i] == NULL )
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Event provider returned a NULL event!\n"));
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
}
|
|
|
|
CWbemObject *pObj = (CWbemObject*)(IWbemClassObject*)apObjects[i];
|
|
|
|
if( pObj->IsObjectInstance() != WBEM_S_NO_ERROR )
|
|
{
|
|
ERRORTRACE((LOG_ESS, "CLASS object received from event provider!\n"));
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// Run the event through the filter
|
|
//
|
|
|
|
CSortedArray aTrues;
|
|
|
|
hres = FilterEvent( pObj, aTrues );
|
|
|
|
if ( hres == WBEM_S_FALSE )
|
|
{
|
|
;
|
|
}
|
|
else if ( hres == WBEM_S_NO_ERROR )
|
|
{
|
|
_DBG_ASSERT( aTrues.Size() > 0 );
|
|
|
|
//
|
|
// Delivery is required --- add this event to the list
|
|
//
|
|
|
|
SetGenerationTime(pObj);
|
|
|
|
apEventsToSend[lNumToSend] = pObj;
|
|
|
|
if(!TempSetTargets(aTargetsToSend + lNumToSend, &aTrues))
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
|
|
lNumToSend++;
|
|
}
|
|
else
|
|
{
|
|
return hres;
|
|
}
|
|
}
|
|
|
|
//
|
|
// If any events need to be delivered, get the delivery pointer
|
|
//
|
|
|
|
if(lNumToSend > 0)
|
|
{
|
|
pManager = m_pManager;
|
|
if(pManager)
|
|
pManager->AddRef();
|
|
else
|
|
return WBEM_S_FALSE;
|
|
}
|
|
}
|
|
|
|
CReleaseMe rm1(pManager);
|
|
|
|
//
|
|
// If any events need to be delivered, deliver
|
|
//
|
|
|
|
if(lNumToSend > 0)
|
|
{
|
|
hres = pManager->DeliverEvent(lNumToSend, apEventsToSend,
|
|
aTargetsToSend,
|
|
lSDLength, pSD);
|
|
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Filter stub failed to process an event: "
|
|
"error code %X\n", hres));
|
|
}
|
|
|
|
return hres;
|
|
}
|
|
|
|
return WBEM_S_FALSE;
|
|
}
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxy::Indicate(long lNumObjects,
|
|
IWbemClassObject** apObjects)
|
|
{
|
|
return IndicateWithSD(lNumObjects, (IUnknown**)apObjects,
|
|
m_lSDLength, m_pSD);
|
|
}
|
|
|
|
HRESULT STDMETHODCALLTYPE CFilterProxy::SetStatus(long lFlags, HRESULT hResult,
|
|
BSTR strResult, IWbemClassObject* pErrorObj)
|
|
{
|
|
return m_pManager->SetStatus(lFlags, hResult, strResult, pErrorObj);
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxy::IndicateWithSD(long lNumObjects,
|
|
IUnknown** apObjects, long lSDLength, BYTE* pSD)
|
|
{
|
|
if(lNumObjects <= 0 || apObjects == NULL)
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
|
|
if(pSD == NULL)
|
|
{
|
|
//
|
|
// Use proxy defaults
|
|
//
|
|
|
|
lSDLength = m_lSDLength;
|
|
pSD = m_pSD;
|
|
}
|
|
|
|
try
|
|
{
|
|
//
|
|
// Special-case single event
|
|
//
|
|
|
|
if(lNumObjects == 1)
|
|
return ProcessOne(*apObjects, lSDLength, pSD);
|
|
else
|
|
return ProcessMany(lNumObjects, apObjects, lSDLength, pSD);
|
|
|
|
}
|
|
catch(...)
|
|
{
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
|
|
|
|
STDMETHODIMP CFilterProxy::IsActive()
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
return (m_Filter.IsFalse()?WBEM_S_FALSE:WBEM_S_NO_ERROR);
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxy::SetSinkSecurity(
|
|
long lSDLength,
|
|
BYTE* pSD)
|
|
{
|
|
CInCritSec ics(&m_cs);
|
|
|
|
//
|
|
// Check for validity
|
|
//
|
|
|
|
if(lSDLength < 0)
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
|
|
if(lSDLength > 0)
|
|
{
|
|
SECURITY_DESCRIPTOR* pDesc = (SECURITY_DESCRIPTOR*)pSD;
|
|
if(!IsValidSecurityDescriptor(pDesc))
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
|
|
if(pDesc->Owner == NULL || pDesc->Group == NULL)
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
|
|
if(GetSecurityDescriptorLength(pSD) != (DWORD)lSDLength)
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
}
|
|
else
|
|
{
|
|
if(pSD != NULL)
|
|
return WBEM_E_INVALID_PARAMETER;
|
|
}
|
|
|
|
//
|
|
// Store the SD in the proxy
|
|
//
|
|
|
|
if(m_pSD && m_pSD != &mstatic_EmptySD)
|
|
delete [] m_pSD;
|
|
|
|
if(lSDLength)
|
|
{
|
|
m_pSD = new BYTE[lSDLength];
|
|
if(m_pSD == NULL)
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
|
|
memcpy(m_pSD, pSD, lSDLength);
|
|
}
|
|
else
|
|
{
|
|
//
|
|
// Cannot let m_pSD be NULL
|
|
//
|
|
m_pSD = &mstatic_EmptySD;
|
|
}
|
|
m_lSDLength = lSDLength;
|
|
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxy::GetRestrictedSink(
|
|
long lNumQueries,
|
|
const LPCWSTR* awszQueries,
|
|
IUnknown* pCallback,
|
|
IWbemEventSink** ppSink)
|
|
{
|
|
return m_pManager->GetRestrictedSink(lNumQueries, awszQueries,
|
|
pCallback, ppSink);
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxy::SetBatchingParameters(
|
|
LONG lFlags,
|
|
DWORD dwMaxBufferSize,
|
|
DWORD dwMaxSendLatency)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
CInCritSec ics(&m_cs);
|
|
|
|
switch(lFlags)
|
|
{
|
|
// TODO: WBEM_FLAG_BATCH_IF_NEEDED currently works the same as
|
|
// WBEM_FLAG_MUST_NOT_BATCH. At some point this needs allow
|
|
// subscriptions to determine the batching behavior.
|
|
case WBEM_FLAG_BATCH_IF_NEEDED:
|
|
case WBEM_FLAG_MUST_NOT_BATCH:
|
|
m_typeBatch = (WBEM_BATCH_TYPE) lFlags;
|
|
m_pManager->RemoveProxyLatency(this);
|
|
m_bBatching = FALSE;
|
|
break;
|
|
|
|
case WBEM_FLAG_MUST_BATCH:
|
|
m_typeBatch = (WBEM_BATCH_TYPE) lFlags;
|
|
m_dwMaxSendLatency = dwMaxSendLatency;
|
|
m_dwMaxBufferSize = dwMaxBufferSize;
|
|
m_dwLastSentStamp = m_pManager->GetLastSentStamp();
|
|
hr = m_pManager->SetProxyLatency(this, dwMaxSendLatency);
|
|
m_bBatching = TRUE;
|
|
break;
|
|
|
|
default:
|
|
hr = WBEM_E_INVALID_PARAMETER;
|
|
break;
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
// Assumes pMainProxy is locked
|
|
HRESULT CFilterProxy::TransferFiltersFromMain(CFilterProxy* pMain)
|
|
{
|
|
HRESULT hres;
|
|
|
|
//
|
|
// Move all the normal filters
|
|
//
|
|
|
|
try
|
|
{
|
|
m_Filter = pMain->m_Filter;
|
|
}
|
|
catch(CX_MemoryException)
|
|
{
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
}
|
|
|
|
if ( m_bUtilizeGuarantee )
|
|
{
|
|
// Utilize source definition
|
|
// =========================
|
|
|
|
CContextMetaData MetaData(m_pMetaData, NULL);
|
|
hres = m_Filter.UtilizeGuarantee(m_SourceDefinition, &MetaData);
|
|
if(FAILED(hres))
|
|
{
|
|
ERRORTRACE((LOG_ESS, "Filter proxy unable to utilize guarantee for"
|
|
" a new proxy; error code: %X\n", hres));
|
|
return hres;
|
|
}
|
|
}
|
|
|
|
return WBEM_S_NO_ERROR;
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxy::GetUnmarshalClass(REFIID riid, void* pv,
|
|
DWORD dwDestContext, void* pvReserved, DWORD mshlFlags,
|
|
CLSID* pClsid)
|
|
{
|
|
return m_pManager->GetUnmarshalClass(riid, pv, dwDestContext, pvReserved,
|
|
mshlFlags, pClsid);
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxy::GetMarshalSizeMax(REFIID riid, void* pv,
|
|
DWORD dwDestContext, void* pvReserved, DWORD mshlFlags,
|
|
ULONG* plSize)
|
|
{
|
|
return m_pManager->GetMarshalSizeMax(riid, pv, dwDestContext, pvReserved,
|
|
mshlFlags, plSize);
|
|
}
|
|
|
|
STDMETHODIMP CFilterProxy::MarshalInterface(IStream* pStream, REFIID riid,
|
|
void* pv, DWORD dwDestContext, void* pvReserved,
|
|
DWORD mshlFlags)
|
|
{
|
|
return m_pManager->MarshalInterface(pStream, riid, pv, dwDestContext,
|
|
pvReserved, mshlFlags);
|
|
}
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// CEventBatch
|
|
|
|
#define INIT_SIZE 32
|
|
#define GROW_SIZE 32
|
|
|
|
CEventBatch::CEventBatch() :
|
|
m_ppObjs(NULL),
|
|
m_pTargets(NULL),
|
|
m_nItems(0),
|
|
m_dwSize(0)
|
|
{
|
|
m_ppObjs = new IWbemClassObject*[INIT_SIZE];
|
|
if (!m_ppObjs)
|
|
throw CX_MemoryException();
|
|
|
|
m_pTargets = new WBEM_REM_TARGETS[INIT_SIZE];
|
|
if (!m_pTargets)
|
|
throw CX_MemoryException();
|
|
|
|
m_dwSize = INIT_SIZE;
|
|
}
|
|
|
|
CEventBatch::~CEventBatch()
|
|
{
|
|
RemoveAll();
|
|
|
|
if (m_ppObjs)
|
|
delete [] m_ppObjs;
|
|
|
|
if (m_pTargets)
|
|
delete [] m_pTargets;
|
|
}
|
|
|
|
BOOL CEventBatch::EnsureAdditionalSize(DWORD nAdditionalNeeded)
|
|
{
|
|
if (m_nItems + nAdditionalNeeded > m_dwSize)
|
|
{
|
|
DWORD nNewSize = m_nItems + nAdditionalNeeded + GROW_SIZE;
|
|
IWbemClassObject **ppNewObjs;
|
|
WBEM_REM_TARGETS *pNewTargets;
|
|
|
|
ppNewObjs = new IWbemClassObject*[nNewSize];
|
|
if (!ppNewObjs)
|
|
throw CX_MemoryException();
|
|
|
|
pNewTargets = new WBEM_REM_TARGETS[nNewSize];
|
|
if (!pNewTargets)
|
|
{
|
|
delete [] ppNewObjs;
|
|
throw CX_MemoryException();
|
|
}
|
|
|
|
// Copy the data from the old pointers to the new pointers.
|
|
memcpy(ppNewObjs, m_ppObjs, m_nItems * sizeof(ppNewObjs[0]));
|
|
memcpy(pNewTargets, m_pTargets, m_nItems * sizeof(pNewTargets[0]));
|
|
|
|
// Get rid of the old pointers.
|
|
delete [] m_ppObjs;
|
|
delete [] m_pTargets;
|
|
|
|
// Set our member pointers with the new pointers.
|
|
m_ppObjs = ppNewObjs;
|
|
m_pTargets = pNewTargets;
|
|
|
|
m_dwSize = nNewSize;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
BOOL CEventBatch::AddEvent(IWbemClassObject *pObj, CSortedArray *pTrues)
|
|
{
|
|
BOOL bRet = FALSE;
|
|
|
|
if (EnsureAdditionalSize(1))
|
|
{
|
|
if (SUCCEEDED(pObj->Clone(&m_ppObjs[m_nItems])))
|
|
{
|
|
if(!TempSetTargets(m_pTargets + m_nItems, pTrues))
|
|
return FALSE;
|
|
|
|
m_nItems++;
|
|
|
|
bRet = TRUE;
|
|
}
|
|
}
|
|
|
|
return bRet;
|
|
}
|
|
|
|
void CEventBatch::RemoveAll()
|
|
{
|
|
for (DWORD i = 0; i < m_nItems; i++)
|
|
{
|
|
m_ppObjs[i]->Release();
|
|
|
|
TempClearTargets(m_pTargets + i);
|
|
}
|
|
|
|
m_nItems = 0;
|
|
}
|