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/*
* Copyright (c) 2013-2022, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
* See full license text in LICENSE file at top of project tree
*/
#include "Win32Service.h"
#include <assert.h>
#include <windows.h>
#include "Daemon.h"
#include "Log.h"
I2PService *I2PService::s_service = NULL;
BOOL I2PService::isService()
{
BOOL bIsService = FALSE;
HWINSTA hWinStation = GetProcessWindowStation();
if (hWinStation != NULL)
{
USEROBJECTFLAGS uof = { FALSE, FALSE, 0 };
if (GetUserObjectInformation(hWinStation, UOI_FLAGS, &uof, sizeof(USEROBJECTFLAGS), NULL) && ((uof.dwFlags & WSF_VISIBLE) == 0))
{
bIsService = TRUE;
}
}
return bIsService;
}
BOOL I2PService::Run(I2PService &service)
{
s_service = &service;
SERVICE_TABLE_ENTRY serviceTable[] =
{
{ service.m_name, ServiceMain },
{ NULL, NULL }
};
return StartServiceCtrlDispatcher(serviceTable);
}
void WINAPI I2PService::ServiceMain(DWORD dwArgc, PSTR *pszArgv)
{
assert(s_service != NULL);
s_service->m_statusHandle = RegisterServiceCtrlHandler(
s_service->m_name, ServiceCtrlHandler);
if (s_service->m_statusHandle == NULL)
{
throw GetLastError();
}
s_service->Start(dwArgc, pszArgv);
}
void WINAPI I2PService::ServiceCtrlHandler(DWORD dwCtrl)
{
switch (dwCtrl)
{
case SERVICE_CONTROL_STOP: s_service->Stop(); break;
case SERVICE_CONTROL_PAUSE: s_service->Pause(); break;
case SERVICE_CONTROL_CONTINUE: s_service->Continue(); break;
case SERVICE_CONTROL_SHUTDOWN: s_service->Shutdown(); break;
case SERVICE_CONTROL_INTERROGATE: break;
default: break;
}
}
I2PService::I2PService(PSTR pszServiceName,
BOOL fCanStop,
BOOL fCanShutdown,
BOOL fCanPauseContinue)
{
m_name = (pszServiceName == NULL) ? (PSTR)"" : pszServiceName;
m_statusHandle = NULL;
m_status.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
m_status.dwCurrentState = SERVICE_START_PENDING;
DWORD dwControlsAccepted = 0;
if (fCanStop)
dwControlsAccepted |= SERVICE_ACCEPT_STOP;
if (fCanShutdown)
dwControlsAccepted |= SERVICE_ACCEPT_SHUTDOWN;
if (fCanPauseContinue)
dwControlsAccepted |= SERVICE_ACCEPT_PAUSE_CONTINUE;
m_status.dwControlsAccepted = dwControlsAccepted;
m_status.dwWin32ExitCode = NO_ERROR;
m_status.dwServiceSpecificExitCode = 0;
m_status.dwCheckPoint = 0;
m_status.dwWaitHint = 0;
m_fStopping = FALSE;
// Create a manual-reset event that is not signaled at first to indicate
// the stopped signal of the service.
m_hStoppedEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
if (m_hStoppedEvent == NULL)
{
throw GetLastError();
}
}
I2PService::~I2PService(void)
{
if (m_hStoppedEvent)
{
CloseHandle(m_hStoppedEvent);
m_hStoppedEvent = NULL;
}
}
void I2PService::Start(DWORD dwArgc, PSTR *pszArgv)
{
try
{
SetServiceStatus(SERVICE_START_PENDING);
OnStart(dwArgc, pszArgv);
SetServiceStatus(SERVICE_RUNNING);
}
catch (DWORD dwError)
{
LogPrint(eLogError, "Win32Service: Start error: ", dwError);
SetServiceStatus(SERVICE_STOPPED, dwError);
}
catch (...)
{
LogPrint(eLogError, "Win32Service: failed to start: ", EVENTLOG_ERROR_TYPE);
SetServiceStatus(SERVICE_STOPPED);
}
}
void I2PService::OnStart(DWORD dwArgc, PSTR *pszArgv)
{
LogPrint(eLogInfo, "Win32Service: in OnStart (", EVENTLOG_INFORMATION_TYPE, ")");
Daemon.start();
_worker = new std::thread(std::bind(&I2PService::WorkerThread, this));
}
void I2PService::WorkerThread()
{
while (!m_fStopping)
{
::Sleep(1000); // Simulate some lengthy operations.
}
// Signal the stopped event.
SetEvent(m_hStoppedEvent);
}
void I2PService::Stop()
{
DWORD dwOriginalState = m_status.dwCurrentState;
try
{
SetServiceStatus(SERVICE_STOP_PENDING);
OnStop();
SetServiceStatus(SERVICE_STOPPED);
}
catch (DWORD dwError)
{
LogPrint(eLogInfo, "Win32Service: Stop error: ", dwError);
SetServiceStatus(dwOriginalState);
}
catch (...)
{
LogPrint(eLogError, "Win32Service: Failed to stop: ", EVENTLOG_ERROR_TYPE);
SetServiceStatus(dwOriginalState);
}
}
void I2PService::OnStop()
{
// Log a service stop message to the Application log.
LogPrint(eLogInfo, "Win32Service: in OnStop (", EVENTLOG_INFORMATION_TYPE, ")");
Daemon.stop();
m_fStopping = TRUE;
if (WaitForSingleObject(m_hStoppedEvent, INFINITE) != WAIT_OBJECT_0)
{
throw GetLastError();
}
_worker->join();
delete _worker;
}
void I2PService::Pause()
{
try
{
SetServiceStatus(SERVICE_PAUSE_PENDING);
OnPause();
SetServiceStatus(SERVICE_PAUSED);
}
catch (DWORD dwError)
{
LogPrint(eLogError, "Win32Service: Pause error: ", dwError);
SetServiceStatus(SERVICE_RUNNING);
}
catch (...)
{
LogPrint(eLogError, "Win32Service: Failed to pause: ", EVENTLOG_ERROR_TYPE);
SetServiceStatus(SERVICE_RUNNING);
}
}
void I2PService::OnPause()
{
}
void I2PService::Continue()
{
try
{
SetServiceStatus(SERVICE_CONTINUE_PENDING);
OnContinue();
SetServiceStatus(SERVICE_RUNNING);
}
catch (DWORD dwError)
{
LogPrint(eLogError, "Win32Service: Continue error: ", dwError);
SetServiceStatus(SERVICE_PAUSED);
}
catch (...)
{
LogPrint(eLogError, "Win32Service: Failed to resume: ", EVENTLOG_ERROR_TYPE);
SetServiceStatus(SERVICE_PAUSED);
}
}
void I2PService::OnContinue()
{
}
void I2PService::Shutdown()
{
try
{
OnShutdown();
SetServiceStatus(SERVICE_STOPPED);
}
catch (DWORD dwError)
{
LogPrint(eLogError, "Win32Service: Shutdown error: ", dwError);
}
catch (...)
{
LogPrint(eLogError, "Win32Service: Failed to shut down: ", EVENTLOG_ERROR_TYPE);
}
}
void I2PService::OnShutdown()
{
}
void I2PService::SetServiceStatus(DWORD dwCurrentState,
DWORD dwWin32ExitCode,
DWORD dwWaitHint)
{
static DWORD dwCheckPoint = 1;
m_status.dwCurrentState = dwCurrentState;
m_status.dwWin32ExitCode = dwWin32ExitCode;
m_status.dwWaitHint = dwWaitHint;
m_status.dwCheckPoint =
((dwCurrentState == SERVICE_RUNNING) ||
(dwCurrentState == SERVICE_STOPPED)) ?
0 : dwCheckPoint++;
::SetServiceStatus(m_statusHandle, &m_status);
}
//*****************************************************************************
void FreeHandles(SC_HANDLE schSCManager, SC_HANDLE schService)
{
if (schSCManager)
{
CloseServiceHandle(schSCManager);
schSCManager = NULL;
}
if (schService)
{
CloseServiceHandle(schService);
schService = NULL;
}
}