//
// status check event handler
// to reconcile the status
//
// to be connected status, broadcast packet
// should be received within MAX_ALLOWED_HEARTBEAT_INTERVAL
//
// returns TRUE to detach from the monitor
// FALSE otherwise.
//
BOOL
CNdasDevice::OnStatusCheck()
{
ximeta::CAutoLock autolock(this);
//
// Only when the device is connected!
//
if (NDAS_DEVICE_STATUS_CONNECTED != m_status) {
// _ASSERTE(FALSE && "OnStatusCheck should be called when connected!");
DBGPRT_WARN(_FT("OnStatusCheck is called on connected. Detaching.\n"));
// Detach from the monitor
return TRUE;
}
DWORD dwCurrentTick = ::GetTickCount();
DWORD dwElapsed = dwCurrentTick - m_dwLastHeartbeatTick;
if (dwElapsed > MAX_ALLOWED_HEARTBEAT_INTERVAL) {
//
// When just a single unit device is mounted,
// status will not be changed to DISCONNECTED!
//
if (IsAnyUnitDevicesMounted()) {
return FALSE;
}
//
// Do not disconnect the device when the debugger is attached
//
if (!NdasServiceConfig::Get(nscDisconnectOnDebug) &&
::IsDebuggerPresent())
{
return FALSE;
}
BOOL fSuccess = DestroyAllUnitDevices();
if (!fSuccess) {
return FALSE;
}
ChangeStatus(NDAS_DEVICE_STATUS_DISCONNECTED);
return TRUE;
}
return FALSE;
}
VOID
CNdasLogicalDevice::OnDeviceStatusFailure()
{
ximeta::CAutoLock autolock(this);
DBGPRT_WARN(_FT("Logical device %s instance does not exist anymore.\n"), ToString());
SetStatus(NDAS_LOGICALDEVICE_STATUS_UNMOUNTED);
//
// Detach from the event monitor
//
CNdasEventMonitor* pEventMon = pGetNdasEventMonitor();
pEventMon->Detach(this);
}
BOOL
CNdasLogicalDeviceManager::UnregisterNdasScsiLocation(
CONST NDAS_SCSI_LOCATION& location)
{
ximeta::CAutoLock autolock(this);
LocationMap::size_type nErased = m_NdasScsiLocationMap.erase(location);
if (1 != nErased) {
DBGPRT_WARN(
_FT("NdasScsiLocation not registered at %s"),
CNdasScsiLocation(location).ToString());
}
_ASSERTE(1 == nErased);
return (1 == nErased);
}
BOOL
CNdasDevice::CreateUnitDevice(DWORD dwUnitNo)
{
_ASSERTE(dwUnitNo < MAX_NDAS_UNITDEVICE_COUNT);
if (dwUnitNo >= MAX_NDAS_UNITDEVICE_COUNT)
{
return FALSE;
}
_ASSERTE(NULL == m_pUnitDevices[dwUnitNo]);
if (!m_fUnitDevicePresent[dwUnitNo])
{
DBGPRT_WARN(_FT("HWINFO does not contain unit %d.\n"), dwUnitNo);
return FALSE;
}
DWORD dwMaxFailure = NdasServiceConfig::Get(nscUnitDeviceIdentifyRetryMax);
DWORD dwInterval = NdasServiceConfig::Get(nscUnitDeviceIdentifyRetryGap);
for (DWORD i = 0; i < dwMaxFailure; ++i)
{
CNdasUnitDeviceCreator udCreator(*this, dwUnitNo);
CNdasUnitDevice* pUnitDevice = udCreator.CreateUnitDevice();
// CreateUnitDevice already called AddRef
if (NULL != pUnitDevice)
{
m_pUnitDevices[dwUnitNo] = pUnitDevice;
pUnitDevice->RegisterToLDM();
return TRUE;
}
::Sleep(dwInterval);
DBGPRT_ERR_EX(_FT("Creating a unit device instance failed (%d out of %d): "),
i, dwMaxFailure);
}
return FALSE;
}
DWORD
CNdasEventPublisher::OnTaskStart()
{
_ASSERTE(NULL != m_hSemQueue && "Don't forget to call initialize().");
// Queue Semaphore, Terminating Thread, Pipe Instances(MAX...)
HANDLE hWaitHandles[2 + MAX_NDAS_EVENT_PIPE_INSTANCES];
hWaitHandles[0] = m_hTaskTerminateEvent;
hWaitHandles[1] = m_hSemQueue;
//
// initial pipe instance
//
m_PipeData.clear();
BOOL fSuccess = AcceptNewConnection();
if (!fSuccess) {
DBGPRT_ERR_EX(_T("Creating a first pipe instance failed: "));
return -1;
}
BOOL bTerminate(FALSE);
while (FALSE == bTerminate) {
DWORD dwWaitHandles = 2 + m_PipeData.size();
for (DWORD i = 0; i < m_PipeData.size(); ++i) {
hWaitHandles[i + 2] = m_PipeData[i]->overlapped.hEvent;
}
DWORD dwWaitResult = ::WaitForMultipleObjects(
dwWaitHandles,
hWaitHandles,
FALSE,
m_dwPeriod);
if (dwWaitResult == WAIT_OBJECT_0)
{
//
// Terminate Thread
//
bTerminate = TRUE;
}
else if (dwWaitResult == WAIT_OBJECT_0 + 1)
{
//
// Event Message is queued
//
while (TRUE) {
m_queueLock.Lock();
bool bEmpty = m_EventMessageQueue.empty();
if (bEmpty) {
m_queueLock.Unlock();
break;
}
NDAS_EVENT_MESSAGE message = m_EventMessageQueue.front();
m_EventMessageQueue.pop();
m_queueLock.Unlock();
Publish(&message);
}
}
else if (dwWaitResult >= WAIT_OBJECT_0 + 2 &&
dwWaitResult < WAIT_OBJECT_0 + 2 + m_PipeData.size())
{
DWORD dwPipe = dwWaitResult - WAIT_OBJECT_0 - 2;
DBGPRT_INFO(_FT("Event Client %d\n"), dwPipe);
CLIENT_DATA* pCurClientData = m_PipeData[dwPipe];
DBGPRT_INFO(_FT("Connected: %d\n"), pCurClientData->bConnected);
fSuccess = ::ResetEvent(pCurClientData->overlapped.hEvent);
_ASSERT(fSuccess);
if (!pCurClientData->bConnected) {
//
// create another instance
//
fSuccess = AcceptNewConnection();
if (!fSuccess) {
DBGPRT_WARN_EX(_FT("Creating another pipe instance failed: "));
DBGPRT_WARN(_FT("No more event subscribers can be accepted.\n"));
}
// AcceptNewConnection will invalidate pCurClientData;
pCurClientData = m_PipeData.at(dwPipe);
//
// Accepting connection
//
pCurClientData->bConnected = TRUE;
fSuccess = ::ResetEvent(pCurClientData->overlapped.hEvent);
_ASSERT(fSuccess);
//
// Send a version event for connected client
//
fSuccess = SendVersionInfo(
pCurClientData->hPipe,
&pCurClientData->overlapped);
//
// Any failure will disconnect the client
//
if (!fSuccess && ERROR_IO_PENDING != ::GetLastError()) {
ClientDataVector::iterator itr = m_PipeData.begin();
CleanupConnection(pCurClientData);
while (itr != m_PipeData.end()) {
if ((CLIENT_DATA*)*itr == pCurClientData) {
m_PipeData.erase(itr);
break;
}
++itr;
}
DBGPRT_INFO(_FT("Accepted removed event subscriber.\n"));
} else {
DBGPRT_INFO(_FT("Accepted new event subscriber.\n"));
}
} else {
}
// ignore other status
} else if (WAIT_TIMEOUT == dwWaitResult) {
NDAS_EVENT_MESSAGE msg = {0};
msg.EventType = NDAS_EVENT_TYPE_PERIODIC;
Publish(&msg);
} else
{
//
// Error
//
}
}
//
// TODO: Add cleanup
//
DWORD nPipeData = m_PipeData.size();
ClientDataVector::iterator itr = m_PipeData.begin();
while (itr != m_PipeData.end()) {
CleanupConnection(*itr);
++itr;
}
m_PipeData.clear();
_tprintf(TEXT("Terminating Publisher Thread...\n"));
return 0;
}
void
CNdasEventPublisher::Publish(const PNDAS_EVENT_MESSAGE pMessage)
{
DBGPRT_INFO(_FT("Publishing Event: %s\n"),
NdasEventTypeString(pMessage->EventType));
//
// sent the message to the connected pipes
//
for (ClientDataVector::iterator itr = m_PipeData.begin();
itr != m_PipeData.end();)
//
// do not forward the iterator here when erasing some
// elements
// itr2 = v.erase(itr);
// itr2 has a forwarded iterator from itr
//
{
CLIENT_DATA* pClientData = *itr;
if (pClientData->bConnected) {
DWORD cbWritten;
BOOL fSuccess = ::WriteFile(
pClientData->hPipe,
pMessage,
sizeof(NDAS_EVENT_MESSAGE),
&cbWritten,
&pClientData->overlapped);
if (!fSuccess && ERROR_IO_PENDING != ::GetLastError()) {
DBGPRT_ERR_EX(_FT("Writing to a pipe failed: "));
DBGPRT_INFO(_FT("Detaching an event subscriber.\n"));
CleanupConnection(pClientData);
//
// erasing an element will automatically
// forward the vector
// (actually, itr remains the same, but the itr is
// a next elemen)
itr = m_PipeData.erase(itr);
//
// create another instance
//
fSuccess = AcceptNewConnection();
if (!fSuccess) {
DBGPRT_WARN_EX(_FT("Creating another pipe instance failed: "));
DBGPRT_WARN(_FT("No more event subscribers can be accepted.\n"));
}
} else {
//
// forward the iterator if we did erase
//
DBGPRT_INFO(_FT("Event written to a pipe %p.\n"), (*itr)->hPipe);
++itr;
}
} else {
//
// forward the iterator if not connected
//
++itr;
}
}
}
BOOL
CNdasDevice::CreateUnitDevice(DWORD dwUnitNo)
{
_ASSERTE(dwUnitNo < MAX_NDAS_UNITDEVICE_COUNT);
if (dwUnitNo >= MAX_NDAS_UNITDEVICE_COUNT)
{
return FALSE;
}
_ASSERTE(NULL == m_pUnitDevices[dwUnitNo]);
if (!m_fUnitDevicePresent[dwUnitNo])
{
DBGPRT_WARN(_FT("HWINFO does not contain unit %d.\n"), dwUnitNo);
return FALSE;
}
static const DWORD UNITDEVICE_IDENTIFY_FAILURE_RETRY_DEFAULT = 4;
static const DWORD UNITDEVICE_IDENTIFY_INTERVAL_DEFAULT = 2500;
DWORD dwMaxFailure = UNITDEVICE_IDENTIFY_FAILURE_RETRY_DEFAULT;
BOOL fSuccess = _NdasSystemCfg.GetValueEx(
_T("ndassvc"),
_T("MaxUnitDeviceIdentifyFailure"),
&dwMaxFailure);
if (!fSuccess || 0 == dwMaxFailure)
{
dwMaxFailure = UNITDEVICE_IDENTIFY_FAILURE_RETRY_DEFAULT;
}
DWORD dwInterval = UNITDEVICE_IDENTIFY_INTERVAL_DEFAULT;
fSuccess = _NdasSystemCfg.GetValueEx(
_T("ndassvc"),
_T("UnitDeviceIdentifyFailureRetryInterval"),
&dwInterval);
if (!fSuccess || dwInterval > 300000)
{
dwInterval = UNITDEVICE_IDENTIFY_INTERVAL_DEFAULT;
}
for (DWORD i = 0; i < dwMaxFailure; ++i)
{
CNdasUnitDeviceCreator udCreator(*this, dwUnitNo);
CNdasUnitDevice* pUnitDevice = udCreator.CreateUnitDevice();
// CreateUnitDevice already called AddRef
if (NULL != pUnitDevice)
{
m_pUnitDevices[dwUnitNo] = pUnitDevice;
pUnitDevice->RegisterToLDM();
return TRUE;
}
::Sleep(dwInterval);
DBGPRT_ERR_EX(_FT("Creating a unit device instance failed (%d out of %d): "),
i, dwMaxFailure);
}
return FALSE;
}
VOID
CNdasIXServer::OnReceive(CLpxDatagramSocket& sock)
{
SOCKADDR_LPX remoteAddr;
DWORD cbReceived;
BYTE* pPacket = NULL;
DWORD dwRecvFlags;
BOOL fSuccess = sock.GetRecvFromResult(
&remoteAddr,
&cbReceived,
(BYTE**)&pPacket,
&dwRecvFlags);
//
// Sanity Check
//
CONST LSINFOX_HEADER* pHeader =
reinterpret_cast<CONST LSINFOX_HEADER*>(pPacket);
UCHAR ProtocolName[4] = INFOX_DATAGRAM_PROTOCOL;
if (pHeader->Protocol[0] != ProtocolName[0] ||
pHeader->Protocol[1] != ProtocolName[1] ||
pHeader->Protocol[2] != ProtocolName[2] ||
pHeader->Protocol[3] != ProtocolName[3])
{
DBGPRT_WARN(_FT("Invalid INFOX packet: protocol %c%c%c%c\n"),
pHeader->Protocol[0],
pHeader->Protocol[1],
pHeader->Protocol[2],
pHeader->Protocol[3]);
return;
}
if (pHeader->MessageSize != cbReceived) {
DBGPRT_WARN(
_FT("Invalid packet size: Received %d bytes, Claimed %d bytes\n"),
cbReceived,
pHeader->MessageSize);
return;
}
CONST LSINFOX_DATA* pData =
reinterpret_cast<CONST LSINFOX_DATA*>(pPacket + sizeof(LSINFOX_HEADER));
switch (LSINFOX_TYPE_MAJTYPE & pHeader->Type) {
case LSINFOX_PRIMARY_UPDATE_MESSAGE:
{
CONST LSINFOX_PRIMARY_UPDATE* pPrimaryUpdateData =
reinterpret_cast<const LSINFOX_PRIMARY_UPDATE*>(pData);
OnIXPrimaryUpdate(sock,&remoteAddr,pPrimaryUpdateData);
return;
}
case LSINFOX_PRIMARY_USAGE_MESSAGE:
{
CONST LSINFOX_NDASDEV_USAGE_REQUEST* pUsageRequest =
reinterpret_cast<const LSINFOX_NDASDEV_USAGE_REQUEST*>(pData);
OnIXUsageRequest(sock,&remoteAddr,pUsageRequest);
return;
}
default:
return;
}
}
VOID
CNdasIXBcast::ResetBind()
{
BOOL fSuccess = FALSE;
if (NULL != m_lpSocketAddressList) {
::LocalFree(m_lpSocketAddressList);
m_lpSocketAddressList = NULL;
}
while (NULL == m_lpSocketAddressList) {
m_lpSocketAddressList = pCreateLocalLpxAddressList();
if (NULL == m_lpSocketAddressList) {
DBGPRT_WARN_EX(_FT("Getting local lpx address list failed. Retry in 5 sec: "));
// try to get address list again in 5 sec
// we should terminate this routine at a task terminate event
DWORD dwWaitResult = ::WaitForSingleObject(m_hTaskTerminateEvent, 5000);
if (WAIT_OBJECT_0 == dwWaitResult) {
return;
}
}
}
fSuccess = m_sockAddrChangeNotifier.Reset();
// _ASSERTE(fSuccess);
if (!fSuccess) {
DBGPRT_WARN(_FT("Resetting sockAddrChangeNotifier failed: "));
}
DWORD nLocalAddrs =
min((DWORD)m_lpSocketAddressList->iAddressCount, m_nSenders);
for (DWORD i = 0; i < m_nSenders; ++i) {
if (INVALID_SOCKET != (SOCKET)m_senders[i]) {
m_senders[i].Close();
}
}
for (DWORD i = 0; i < nLocalAddrs && i < m_nSenders; ++i) {
PSOCKADDR_LPX pSockAddr = (PSOCKADDR_LPX)
m_lpSocketAddressList->Address[i].lpSockaddr;
pSockAddr->LpxAddress.Port = 0;
fSuccess = m_senders[i].Create();
if (!fSuccess) {
DBGPRT_ERR_EX(_FT("Creating a socket failed: "));
continue;
}
//
// This is a broadcast socket
//
BOOL bBroadcast = TRUE;
fSuccess = m_senders[i].SetSockOpt(
SO_BROADCAST,
(CONST BYTE*)&bBroadcast,
sizeof(BOOL));
if (!fSuccess) {
DBGPRT_ERR_EX(_FT("Setting a sock option to broadcast failed: "));
(VOID) m_senders[i].Close();
continue;
}
fSuccess = m_senders[i].Bind(pSockAddr);
if (!fSuccess) {
DBGPRT_ERR_EX(_FT("Binding a sock %d to %s failed: "),
i, CSockLpxAddr(pSockAddr).ToString());
(VOID) m_senders[i].Close();
continue;
}
}
}
void
CNdasDeviceHeartbeatListener::OnReceive(CLpxDatagramSocket& sock)
{
SOCKADDR_LPX remoteAddr;
DWORD cbReceived;
PNDAS_DEVICE_HEARTBEAT pData = NULL;
DWORD dwRecvFlags;
BOOL fSuccess = sock.GetRecvFromResult(
&remoteAddr,
&cbReceived,
(BYTE**)&pData,
&dwRecvFlags);
if (!fSuccess)
{
DBGPRT_ERR_EX(_FT("Heartbeat Packet Receive failed: "));
return;
}
DBGPRT_NOISE(_FT("Received Heartbeat Packet (%d bytes) ")
_T("from %s at %s: ")
_T("Receive Flag %08X\n"),
cbReceived,
CSockLpxAddr(remoteAddr).ToString(),
CSockLpxAddr(sock.GetBoundAddr()).ToString(),
dwRecvFlags);
fSuccess = IsValidHeartbeat(cbReceived, (LPCVOID) pData);
if (!fSuccess)
{
DBGPRT_WARN(_FT("Invalid packet received!\n"));
return;
}
const NDAS_DEVICE_HEARTBEAT* pHeartbeat =
reinterpret_cast<const NDAS_DEVICE_HEARTBEAT*>(pData);
NDAS_DEVICE_HEARTBEAT_INFO eventData = {0};
::CopyMemory(
eventData.DeviceAddress.Node,
remoteAddr.LpxAddress.Node,
sizeof(remoteAddr.LpxAddress.Node));
C_ASSERT(
sizeof(eventData.DeviceAddress.Node) ==
sizeof(remoteAddr.LpxAddress.Node));
::CopyMemory(
eventData.LocalAddress.Node,
sock.GetBoundAddr()->LpxAddress.Node,
sizeof(remoteAddr.LpxAddress.Node));
C_ASSERT(
sizeof(eventData.LocalAddress.Node) ==
sizeof(remoteAddr.LpxAddress.Node));
eventData.Timestamp = ::GetTickCount();
eventData.Type = pHeartbeat->Type;
eventData.Version = pHeartbeat->Version;
__raise this->OnHeartbeat(eventData);
}
