//
// FUNCTION: CServiceBase::Start(DWORD, PWSTR *)
//
// PURPOSE: The function starts the service. It calls the OnStart virtual
// function in which you can specify the actions to take when the service
// starts. If an error occurs during the startup, the error will be logged
// in the Application event log, and the service will be stopped.
//
// PARAMETERS:
// * dwArgc - number of command line arguments
// * lpszArgv - array of command line arguments
//
void CServiceBase::Start(DWORD dwArgc, PWSTR *pszArgv)
{
WriteEventLogEntry(L"Service starting.", TRACE_LEVEL_ERROR);
try
{
// Tell SCM that the service is starting.
SetServiceStatus(SERVICE_START_PENDING);
// Perform service-specific initialization.
OnStart(dwArgc, pszArgv);
// Tell SCM that the service is started.
SetServiceStatus(SERVICE_RUNNING);
}
catch (DWORD dwError)
{
// Log the error.
WriteErrorLogEntry(L"Service failed to start.", dwError);
// Set the service status to be stopped.
SetServiceStatus(SERVICE_STOPPED, dwError);
}
catch (...)
{
// Log the error.
WriteEventLogEntry(L"Service failed to start.", TRACE_LEVEL_ERROR);
// Set the service status to be stopped.
SetServiceStatus(SERVICE_STOPPED);
}
}
void ZeroTierOneService::threadMain()
throw()
{
ZT_SVCDBG("ZeroTierOneService::threadMain()\r\n");
restart_node:
try {
{
ZeroTier::Mutex::Lock _l(_lock);
delete _service;
_service = (ZeroTier::OneService *)0; // in case newInstance() fails
_service = ZeroTier::OneService::newInstance(
ZeroTier::OneService::platformDefaultHomePath().c_str(),
ZT_DEFAULT_PORT);
}
switch(_service->run()) {
case ZeroTier::OneService::ONE_UNRECOVERABLE_ERROR: {
std::string err("ZeroTier One encountered an unrecoverable error: ");
err.append(_service->fatalErrorMessage());
err.append(" (restarting in 5 seconds)");
WriteEventLogEntry(const_cast <PSTR>(err.c_str()),EVENTLOG_ERROR_TYPE);
Sleep(5000);
}
goto restart_node;
case ZeroTier::OneService::ONE_IDENTITY_COLLISION: {
std::string homeDir(ZeroTier::OneService::platformDefaultHomePath());
delete _service;
_service = (ZeroTier::OneService *)0;
std::string oldid;
ZeroTier::OSUtils::readFile((homeDir + ZT_PATH_SEPARATOR_S + "identity.secret").c_str(),oldid);
if (oldid.length()) {
ZeroTier::OSUtils::writeFile((homeDir + ZT_PATH_SEPARATOR_S + "identity.secret.saved_after_collision").c_str(),oldid);
ZeroTier::OSUtils::rm((homeDir + ZT_PATH_SEPARATOR_S + "identity.secret").c_str());
ZeroTier::OSUtils::rm((homeDir + ZT_PATH_SEPARATOR_S + "identity.public").c_str());
}
}
goto restart_node;
default: // normal termination
break;
}
} catch ( ... ) {
// sanity check, shouldn't happen since Node::run() should catch all its own errors
// could also happen if we're out of memory though!
WriteEventLogEntry("unexpected exception (out of memory?) (trying again in 5 seconds)",EVENTLOG_ERROR_TYPE);
Sleep(5000);
goto restart_node;
}
{
ZeroTier::Mutex::Lock _l(_lock);
delete _service;
_service = (ZeroTier::OneService *)0;
}
}
void SessionServer::OnSessionEmpty(const XSessionConstPtr& session)
{
// Hold the lock during callbacks from the sessions, which run in their own threads
ScopedLock lock(m_mutex);
XT_UNREFERENCED_PARAM(session);
// Log a service stop message to the Application log.
WriteEventLogEntry(L"Sharing Service session empty", EVENTLOG_INFORMATION_TYPE);
if (session->GetType() == SessionType::ADHOC)
{
// Find the session in the list
for (size_t i = 0; i < m_sessions.size(); ++i)
{
if (m_sessions[i] == session)
{
uint32 sessionID = session->GetId();
// Queue the sessions the be deleted on the server's thread
m_sessionsPendingDeletion.push_back(m_sessions[i]);
// Erase the session from the list
m_sessionChangeListener.erase(m_sessionChangeListener.find(m_sessions[i]));
m_sessions.erase(m_sessions.begin() + i);
// Notify the clients that the session has closed
SessionClosedMsg closedMsg(sessionID);
SendSessionMessageToAllClients(closedMsg.ToJSONString());
break;
}
}
}
}
//
// FUNCTION: CSampleService::OnStop(void)
//
// PURPOSE: The function is executed when a Stop command is sent to the
// service by SCM. It specifies actions to take when a service stops
// running. In this code sample, OnStop logs a service-stop message to the
// Application log, and waits for the finish of the main service function.
//
// COMMENTS:
// Be sure to periodically call ReportServiceStatus() with
// SERVICE_STOP_PENDING if the procedure is going to take long time.
//
void CSampleService::OnStop()
{
// Log a service stop message to the Application log.
WriteEventLogEntry(L"CppWindowsService in OnStop",
EVENTLOG_INFORMATION_TYPE);
ProcessHelper::SendCtrlC();
}
//
// FUNCTION: CSampleService::OnStart(DWORD, LPWSTR *)
//
// PURPOSE: The function is executed when a Start command is sent to the
// service by the SCM or when the operating system starts (for a service
// that starts automatically). It specifies actions to take when the
// service starts. In this code sample, OnStart logs a service-start
// message to the Application log, and queues the main service function for
// execution in a thread pool worker thread.
//
// PARAMETERS:
// * dwArgc - number of command line arguments
// * lpszArgv - array of command line arguments
//
// NOTE: A service application is designed to be long running. Therefore,
// it usually polls or monitors something in the system. The monitoring is
// set up in the OnStart method. However, OnStart does not actually do the
// monitoring. The OnStart method must return to the operating system after
// the service's operation has begun. It must not loop forever or block. To
// set up a simple monitoring mechanism, one general solution is to create
// a timer in OnStart. The timer would then raise events in your code
// periodically, at which time your service could do its monitoring. The
// other solution is to spawn a new thread to perform the main service
// functions, which is demonstrated in this code sample.
//
void CSampleService::OnStart(DWORD dwArgc, PWSTR *lpszArgv)
{
// Log a service start message to the Application log.
WriteEventLogEntry(L"CppWindowsService in OnStart", EVENTLOG_INFORMATION_TYPE);
// Launch external process
ProcessHelper::CreateConsoleProcess();
}
//
// FUNCTION: CServiceBase::Continue()
//
// PURPOSE: The function resumes normal functioning after being paused if
// the service supports pause and continue. It calls the OnContinue virtual
// function in which you can specify the actions to take when the service
// continues. If an error occurs, the error will be logged in the
// Application event log, and the service will still be paused.
//
void CServiceBase::Continue()
{
try
{
// Tell SCM that the service is resuming.
SetServiceStatus(SERVICE_CONTINUE_PENDING);
// Perform service-specific continue operations.
OnContinue();
// Tell SCM that the service is running.
SetServiceStatus(SERVICE_RUNNING);
}
catch (DWORD dwError)
{
// Log the error.
WriteErrorLogEntry(L"Service failed to resume.", dwError);
// Tell SCM that the service is still paused.
SetServiceStatus(SERVICE_PAUSED);
}
catch (...)
{
// Log the error.
WriteEventLogEntry(L"Service failed to resume.", TRACE_LEVEL_ERROR);
// Tell SCM that the service is still paused.
SetServiceStatus(SERVICE_PAUSED);
}
}
//
// FUNCTION: CServiceBase::Pause()
//
// PURPOSE: The function pauses the service if the service supports pause
// and continue. It calls the OnPause virtual function in which you can
// specify the actions to take when the service pauses. If an error occurs,
// the error will be logged in the Application event log, and the service
// will become running.
//
void CServiceBase::Pause()
{
try
{
// Tell SCM that the service is pausing.
SetServiceStatus(SERVICE_PAUSE_PENDING);
// Perform service-specific pause operations.
OnPause();
// Tell SCM that the service is paused.
SetServiceStatus(SERVICE_PAUSED);
}
catch (DWORD dwError)
{
// Log the error.
WriteErrorLogEntry(L"Service failed to pause.", dwError);
// Tell SCM that the service is still running.
SetServiceStatus(SERVICE_RUNNING);
}
catch (...)
{
// Log the error.
WriteEventLogEntry(L"Service failed to pause.", TRACE_LEVEL_ERROR);
// Tell SCM that the service is still running.
SetServiceStatus(SERVICE_RUNNING);
}
}
//
// FUNCTION: CServiceBase::Stop()
//
// PURPOSE: The function stops the service. It calls the OnStop virtual
// function in which you can specify the actions to take when the service
// stops. If an error occurs, the error will be logged in the Application
// event log, and the service will be restored to the original state.
//
void CServiceBase::Stop()
{
DWORD dwOriginalState = m_status.dwCurrentState;
try
{
// Tell SCM that the service is stopping.
SetServiceStatus(SERVICE_STOP_PENDING);
// Perform service-specific stop operations.
OnStop();
// Tell SCM that the service is stopped.
SetServiceStatus(SERVICE_STOPPED);
}
catch (DWORD dwError)
{
// Log the error.
WriteErrorLogEntry(L"Service failed to stop.", dwError);
// Set the orginal service status.
SetServiceStatus(dwOriginalState);
}
catch (...)
{
// Log the error.
WriteEventLogEntry(L"Service failed to stop.", TRACE_LEVEL_ERROR);
// Set the orginal service status.
SetServiceStatus(dwOriginalState);
}
}
//
// FUNCTION: ServiceBase::WriteErrorLogEntry(PWSTR, DWORD)
//
// PURPOSE: Log an error message to the Application event log.
//
// PARAMETERS:
// * pszFunction - the function that gives the error
// * dwError - the error code
//
void ServiceBase::WriteErrorLogEntry(PWSTR pszFunction, DWORD dwError)
{
wchar_t szMessage[260];
StringCchPrintf(szMessage, ARRAYSIZE(szMessage),
L"%s failed w/err 0x%08lx", pszFunction, dwError);
WriteEventLogEntry(szMessage, EVENTLOG_ERROR_TYPE);
}
//
// FUNCTION: CServiceBase::WriteErrorLogEntry(PWSTR, DWORD)
//
// PURPOSE: Log an event.
//
// PARAMETERS:
// * pszFunction - the function that gives the error
// * dwError - the error code
//
void CServiceBase::WriteErrorLogEntry(
_In_ PWSTR pszFunction,
_In_ DWORD dwError)
{
wchar_t szMessage[260];
StringCchPrintf(szMessage, ARRAYSIZE(szMessage),
L"%s failed w/err 0x%08lx", pszFunction, dwError);
WriteEventLogEntry(szMessage, TRACE_LEVEL_ERROR);
}
//
// FUNCTION: CSampleService::OnStart(DWORD, LPWSTR *)
//
// PURPOSE: The function is executed when a Start command is sent to the
// service by the SCM or when the operating system starts (for a service
// that starts automatically). It specifies actions to take when the
// service starts. In this code sample, OnStart logs a service-start
// message to the Application log, and queues the main service function for
// execution in a thread pool worker thread.
//
// PARAMETERS:
// * dwArgc - number of command line arguments
// * lpszArgv - array of command line arguments
//
// NOTE: A service application is designed to be long running. Therefore,
// it usually polls or monitors something in the system. The monitoring is
// set up in the OnStart method. However, OnStart does not actually do the
// monitoring. The OnStart method must return to the operating system after
// the service's operation has begun. It must not loop forever or block. To
// set up a simple monitoring mechanism, one general solution is to create
// a timer in OnStart. The timer would then raise events in your code
// periodically, at which time your service could do its monitoring. The
// other solution is to spawn a new thread to perform the main service
// functions, which is demonstrated in this code sample.
//
void CSampleService::OnStart(DWORD dwArgc, LPWSTR *lpszArgv)
{
// Log a service start message to the Application log.
WriteEventLogEntry(L"CppWindowsService in OnStart",
EVENTLOG_INFORMATION_TYPE);
// Queue the main service function for execution in a worker thread.
CThreadPool::QueueUserWorkItem(&CSampleService::ServiceWorkerThread, this);
}
//
// FUNCTION: CSampleService::OnStop(void)
//
// PURPOSE: The function is executed when a Stop command is sent to the
// service by SCM. It specifies actions to take when a service stops
// running. In this code sample, OnStop logs a service-stop message to the
// Application log, and waits for the finish of the main service function.
//
// COMMENTS:
// Be sure to periodically call ReportServiceStatus() with
// SERVICE_STOP_PENDING if the procedure is going to take long time.
//
void CSampleService::OnStop()
{
// Log a service stop message to the Application log.
WriteEventLogEntry(L"CppWindowsService in OnStop",
EVENTLOG_INFORMATION_TYPE);
// Indicate that the service is stopping and wait for the finish of the
// main service function (ServiceWorkerThread).
m_fStopping = TRUE;
if (WaitForSingleObject(m_hStoppedEvent, INFINITE) != WAIT_OBJECT_0)
{
throw GetLastError();
}
}
void SessionServer::OnStop()
{
LogInfo("**********************************");
LogInfo("****** Sharing Service OnStop ******");
LogInfo("**********************************");
// Log a service stop message to the Application log.
WriteEventLogEntry(L"Sharing Server stopping", EVENTLOG_INFORMATION_TYPE);
// Indicate that the service is stopping and wait for the finish of the
// main service function (ServerThreadFunc).
m_stopping = TRUE;
m_serverThread->WaitForThreadExit();
TeardownFileLogger();
}
//
// FUNCTION: CServiceBase::Shutdown()
//
// PURPOSE: The function executes when the system is shutting down. It
// calls the OnShutdown virtual function in which you can specify what
// should occur immediately prior to the system shutting down. If an error
// occurs, the error will be logged in the Application event log.
//
void CServiceBase::Shutdown()
{
try
{
// Perform service-specific shutdown operations.
OnShutdown();
// Tell SCM that the service is stopped.
SetServiceStatus(SERVICE_STOPPED);
}
catch (DWORD dwError)
{
// Log the error.
WriteErrorLogEntry(L"Service failed to shut down.", dwError);
}
catch (...)
{
// Log the error.
WriteEventLogEntry(L"Service failed to shut down.", TRACE_LEVEL_ERROR);
}
}
void SessionServer::OnStart(DWORD dwArgc, PWSTR *pszArgv)
{
InitializeFileLogger();
// Log out an obvious piece of text to help distinguish between server sessions.
LogInfo("***********************************");
LogInfo("****** Sharing Service OnStart ******");
LogInfo("***********************************");
// Log a service start message to the Application log.
WriteEventLogEntry(L"Sharing Server starting", EVENTLOG_INFORMATION_TYPE);
LogInfo("Server Info: \n\tBuild Version: %ls \n\tSchema Version: %i", XTOOLS_VERSION_STRING, kXToolsSchemaVersion);
// TODO: use different machines, etc, based on command line parameters
XT_UNREFERENCED_PARAM(dwArgc);
XT_UNREFERENCED_PARAM(pszArgv);
// Start listening for new connections
m_listenerReceipt = m_socketMgr->AcceptConnections(kSessionServerPort, kSessionServerMaxConnections, this);
LogInfo("Listening for session list connections on port %i of all network devices of the local machine.", kSessionServerPort);
LogInfo("Local IP addresses are:");
IPAddressList addressList = m_socketMgr->GetLocalMachineAddresses();
for (size_t i = 0; i < addressList.size(); ++i)
{
LogInfo("\t%s", addressList[i].ToString().c_str());
}
// Allocate a pool of ports to use for sessions
m_portPool = new PortPool(kSessionServerPort-1, 256);
// TODO: Read from a configuration file for persistent sessions.
XTVERIFY(CreateNewSession("Default", SessionType::PERSISTENT) != NULL);
// Start a thread to run the main service logic.
m_serverThread = new MemberFuncThread(&SessionServer::ServerThreadFunc, this);
}
void ZeroTierOneService::threadMain()
throw()
{
ZT_SVCDBG("ZeroTierOneService::threadMain()\r\n");
restart_node:
try {
{
// start or restart
ZeroTier::Mutex::Lock _l(_lock);
delete _node;
_node = new ZeroTier::Node(ZeroTier::ZT_DEFAULTS.defaultHomePath.c_str(),ZT_DEFAULT_UDP_PORT,0,false);
}
switch(_node->run()) {
case ZeroTier::Node::NODE_RESTART_FOR_UPGRADE: {
// Shut down node
ZeroTier::Node *n;
{
ZeroTier::Mutex::Lock _l(_lock);
n = _node;
_node = (ZeroTier::Node *)0;
}
std::string msiPath;
if (n) {
const char *msiPathTmp = n->reasonForTermination();
if (msiPathTmp)
msiPath = msiPathTmp;
}
delete n;
if ((!msiPath.length())||(!ZeroTier::Utils::fileExists(msiPath.c_str()))) {
WriteEventLogEntry("auto-update failed: no msi path provided by Node",EVENTLOG_ERROR_TYPE);
Sleep(5000);
goto restart_node;
}
if (!doStartUpgrade(msiPath)) {
WriteEventLogEntry("auto-update failed: unable to create InstallAndRestartService.bat",EVENTLOG_ERROR_TYPE);
Sleep(5000);
goto restart_node;
}
// Terminate service to allow updater to update
Stop();
} return;
case ZeroTier::Node::NODE_UNRECOVERABLE_ERROR: {
std::string err("ZeroTier node encountered an unrecoverable error: ");
const char *r = _node->reasonForTermination();
if (r)
err.append(r);
else err.append("(unknown error)");
err.append(" (restarting in 5 seconds)");
WriteEventLogEntry(const_cast <PSTR>(err.c_str()),EVENTLOG_ERROR_TYPE);
Sleep(5000);
goto restart_node;
} break;
default: // includes normal termination, which will terminate thread
break;
}
} catch ( ... ) {
// sanity check, shouldn't happen since Node::run() should catch all its own errors
// could also happen if we're out of memory though!
WriteEventLogEntry("unexpected exception (out of memory?) (trying again in 5 seconds)",EVENTLOG_ERROR_TYPE);
Sleep(5000);
goto restart_node;
}
_lock.lock();
delete _node;
_node = (ZeroTier::Node *)0;
_lock.unlock();
}
