void CNTL_shutdown_service(const TEXT* message)
{
/**************************************
*
* C N T L _ s h u t d o w n _ s e r v i c e
*
**************************************
*
* Functional description
*
**************************************/
const char* strings[2];
char buffer[BUFFER_SMALL];
sprintf(buffer, "%s error: %lu", service_name->c_str(), GetLastError());
HANDLE event_source = RegisterEventSource(NULL, service_name->c_str());
if (event_source)
{
strings[0] = buffer;
strings[1] = message;
ReportEvent(event_source, EVENTLOG_ERROR_TYPE, 0, 0, NULL, 2, 0, strings, NULL);
DeregisterEventSource(event_source);
}
if (stop_event_handle)
SetEvent(stop_event_handle);
}
const char *Config::getUdfAccess()
{
static Firebird::GlobalPtr<Firebird::Mutex> udfMutex;
static Firebird::GlobalPtr<Firebird::string> udfValue;
static const char* volatile value = 0;
if (value)
{
return value;
}
Firebird::MutexLockGuard guard(udfMutex, "Config::getUdfAccess");
if (value)
{
return value;
}
const char* v = (const char*) getDefaultConfig()->values[KEY_UDF_ACCESS];
if (CASE_SENSITIVITY ? (! strcmp(v, UDF_DEFAULT_CONFIG_VALUE) && FB_UDFDIR[0]) :
(! fb_utils::stricmp(v, UDF_DEFAULT_CONFIG_VALUE) && FB_UDFDIR[0]))
{
udfValue->printf("Restrict %s", FB_UDFDIR);
value = udfValue->c_str();
}
else
{
value = v;
}
return value;
}
void WINAPI CNTL_main_thread( DWORD /*argc*/, char* /*argv*/[])
{
/**************************************
*
* C N T L _ m a i n _ t h r e a d
*
**************************************
*
* Functional description
*
**************************************/
service_handle =
RegisterServiceCtrlHandler(service_name->c_str(), control_thread);
if (!service_handle)
return;
// start everything, and wait here for ever, or at
// least until we get the stop event indicating that
// the service is stoping.
bool failure = true;
DWORD temp = 0;
if (report_status(SERVICE_START_PENDING, NO_ERROR, 1, 3000) &&
(stop_event_handle = CreateEvent(NULL, TRUE, FALSE, NULL)) != NULL &&
report_status(SERVICE_START_PENDING, NO_ERROR, 2, 3000) &&
!gds__thread_start(main_handler, NULL, 0, 0, 0) &&
report_status(SERVICE_RUNNING, NO_ERROR, 0, 0))
{
failure = false;
temp = WaitForSingleObject(stop_event_handle, INFINITE);
}
DWORD last_error = 0;
if (failure || temp == WAIT_FAILED)
last_error = GetLastError();
if (stop_event_handle)
CloseHandle(stop_event_handle);
// Once we are stopped, we will tell the server to
// do the same. We could not do this in the control_thread
// since the Services Control Manager is single threaded,
// and thus can only process one request at the time.
SERVICE_STATUS status_info;
SC_HANDLE hScManager = 0, hService = 0;
hScManager =
OpenSCManager(NULL, NULL, GENERIC_READ);
hService = OpenService(hScManager, remote_name->c_str(),
GENERIC_READ | GENERIC_EXECUTE);
ControlService(hService, SERVICE_CONTROL_STOP, &status_info);
CloseServiceHandle(hScManager);
CloseServiceHandle(hService);
report_status(SERVICE_STOPPED, last_error, 0, 0);
}
int ISC_kill(SLONG pid, SLONG signal_number, void *object_hndl)
{
/**************************************
*
* I S C _ k i l l ( W I N _ N T )
*
**************************************
*
* Functional description
* Notify somebody else.
*
**************************************/
// If we're simply trying to poke ourselves, do so directly.
ISC_signal_init();
if (pid == process_id)
return SetEvent(object_hndl) ? 0 : -1;
HANDLE handle = openEvents->getEvent(pid, signal_number);
if (!handle)
return -1;
return SetEvent(handle) ? 0 : -1;
}
void CNTL_init(ThreadEntryPoint* handler, const TEXT* name)
{
/**************************************
*
* C N T L _ i n i t
*
**************************************
*
* Functional description
*
**************************************/
main_handler = handler;
service_name->printf(REMOTE_SERVICE, name);
mutex_name->printf(GUARDIAN_MUTEX, name);
}
void CNTL_init(ThreadEntryPoint* handler, const TEXT* name)
{
/**************************************
*
* C N T L _ i n i t
*
**************************************
*
* Functional description
*
**************************************/
main_handler = handler;
//MemoryPool& pool = *getDefaultMemoryPool();
service_name->printf(ISCGUARD_SERVICE, name);
remote_name->printf(REMOTE_SERVICE, name);
}
void WINAPI CNTL_main_thread( DWORD /*argc*/, char* /*argv*/[])
{
/**************************************
*
* C N T L _ m a i n _ t h r e a d
*
**************************************
*
* Functional description
*
**************************************/
service_handle = RegisterServiceCtrlHandler(service_name->c_str(), control_thread);
if (!service_handle)
return;
int status = 1;
DWORD temp = 0;
if (report_status(SERVICE_START_PENDING, NO_ERROR, 1, 3000) &&
(stop_event_handle = CreateEvent(NULL, TRUE, FALSE, NULL)) != NULL &&
report_status(SERVICE_START_PENDING, NO_ERROR, 2, 3000))
{
try
{
Thread::start(main_handler, NULL, THREAD_medium);
if (report_status(SERVICE_RUNNING, NO_ERROR, 0, 0))
{
status = 0;
temp = WaitForSingleObject(stop_event_handle, INFINITE);
}
}
catch (const Firebird::Exception& ex)
{
iscLogException("CNTL: cannot start service handler thread", ex);
}
}
DWORD last_error = 0;
if (temp == WAIT_FAILED || status)
last_error = GetLastError();
if (stop_event_handle)
CloseHandle(stop_event_handle);
report_status(SERVICE_STOP_PENDING, NO_ERROR, 1, SHUTDOWN_TIMEOUT);
fb_shutdown(SHUTDOWN_TIMEOUT, fb_shutrsn_svc_stopped);
report_status(SERVICE_STOPPED, last_error, 0, 0);
}
void CNTL_stop_service() //const TEXT* service) // unused param
{
/**************************************
*
* C N T L _ s t o p _ s e r v i c e
*
**************************************
*
* Functional description
* This function is called to stop the service.
*
*
**************************************/
SC_HANDLE servicemgr_handle = OpenSCManager(NULL, NULL, GENERIC_READ);
if (servicemgr_handle == NULL)
{
// return error
int error = GetLastError();
gds__log("SC manager error %d", error);
return;
}
SC_HANDLE service_handleL =
OpenService(servicemgr_handle, service_name->c_str(), GENERIC_READ | GENERIC_EXECUTE);
if (service_handleL == NULL)
{
// return error
int error = GetLastError();
gds__log("open services error %d", error);
return;
}
else
{
SERVICE_STATUS status_info;
if (!ControlService
(service_handleL, SERVICE_CONTROL_STOP, &status_info))
{
// return error
const int error = GetLastError();
gds__log("Control services error %d", error);
return;
}
}
}
static void WINAPI control_thread( DWORD action)
{
/**************************************
*
* c o n t r o l _ t h r e a d
*
**************************************
*
* Functional description
* Process a service control request.
*
**************************************/
const DWORD state = SERVICE_RUNNING;
switch (action)
{
case SERVICE_CONTROL_STOP:
case SERVICE_CONTROL_SHUTDOWN:
report_status(SERVICE_STOP_PENDING, NO_ERROR, 1, 3000);
if (hMutex)
ReleaseMutex(hMutex);
SetEvent(stop_event_handle);
return;
case SERVICE_CONTROL_INTERROGATE:
break;
case SERVICE_CREATE_GUARDIAN_MUTEX:
hMutex = OpenMutex(SYNCHRONIZE, FALSE, mutex_name->c_str());
if (hMutex)
{
UINT error_mode = SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX |
SEM_NOOPENFILEERRORBOX | SEM_NOALIGNMENTFAULTEXCEPT;
SetErrorMode(error_mode);
WaitForSingleObject(hMutex, INFINITE);
}
break;
default:
break;
}
report_status(state, NO_ERROR, 0, 0);
}
int WINAPI WinMain(HINSTANCE hInstance,
HINSTANCE /*hPrevInstance*/, LPSTR lpszCmdLine, int /*nCmdShow*/)
{
/**************************************
*
* m a i n
*
**************************************
*
* Functional description
* The main routine for Windows based server guardian.
*
**************************************/
strcpy(instance, FB_DEFAULT_INSTANCE);
service_flag = parse_args(lpszCmdLine);
service_name->printf(ISCGUARD_SERVICE, instance);
remote_name->printf(REMOTE_SERVICE, instance);
mutex_name->printf(GUARDIAN_MUTEX, instance);
// set the global HINSTANCE as we need it in WINDOW_main
hInstance_gbl = hInstance;
// allocate space for the event list
log_entry = static_cast<log_info*>(malloc(sizeof(log_info)));
log_entry->next = NULL;
// since the flag is set we run as a service
if (service_flag)
{
CNTL_init(WINDOW_main, instance);
const SERVICE_TABLE_ENTRY service_table[] =
{
{const_cast<char*>(service_name->c_str()), CNTL_main_thread},
{NULL, NULL}
};
// BRS There is a error in MinGW (3.1.0) headers
// the parameter of StartServiceCtrlDispatcher is declared const in msvc headers
#if defined(MINGW)
if (!StartServiceCtrlDispatcher(const_cast<SERVICE_TABLE_ENTRY*>(service_table)))
#else
if (!StartServiceCtrlDispatcher(service_table))
#endif
{
if (GetLastError() != ERROR_CALL_NOT_IMPLEMENTED)
CNTL_shutdown_service("StartServiceCtrlDispatcher failed");
}
if (watcher_thd)
{
WaitForSingleObject(watcher_thd, 5000);
CloseHandle(watcher_thd);
}
}
else {
return WINDOW_main(0);
}
return TRUE;
}
THREAD_ENTRY_DECLARE start_and_watch_server(THREAD_ENTRY_PARAM)
{
/**************************************
*
* s t a r t _ a n d _ w a t c h _ s e r v e r
*
**************************************
*
* Functional description
*
* This function is where the server process is created and
* the thread waits for this process to exit.
*
**************************************/
Firebird::ContextPoolHolder threadContext(getDefaultMemoryPool());
HANDLE procHandle = NULL;
bool done = true;
const UINT error_mode = SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX |
SEM_NOOPENFILEERRORBOX | SEM_NOALIGNMENTFAULTEXCEPT;
SC_HANDLE hScManager = 0, hService = 0;
// get the guardian startup information
const short option = Config::getGuardianOption();
char prefix_buffer[MAXPATHLEN];
GetModuleFileName(NULL, prefix_buffer, sizeof(prefix_buffer));
Firebird::PathName path = prefix_buffer;
path = path.substr(0, path.rfind(PathUtils::dir_sep) + 1) + FBSERVER;
path = "\"" + path + "\"";
Firebird::PathName prog_name = path + " -a -n";
// if the guardian is set to FOREVER then set the error mode
UINT old_error_mode = 0;
if (option == START_FOREVER)
old_error_mode = SetErrorMode(error_mode);
// Spawn the new process
do {
SERVICE_STATUS ServiceStatus;
char out_buf[1024];
BOOL success;
int error = 0;
if (service_flag)
{
if (hService)
{
while ((QueryServiceStatus(hService, &ServiceStatus) == TRUE) &&
(ServiceStatus.dwCurrentState != SERVICE_STOPPED))
{
Sleep(500);
}
}
procHandle = CreateMutex(NULL, FALSE, mutex_name->c_str());
// start as a service. If the service can not be found or
// fails to start, close the handle to the mutex and set
// success = FALSE
if (!hScManager)
hScManager = OpenSCManager(NULL, NULL, GENERIC_READ);
if (!hService)
{
hService = OpenService(hScManager, remote_name->c_str(),
GENERIC_READ | GENERIC_EXECUTE);
}
success = StartService(hService, 0, NULL);
if (success != TRUE)
error = GetLastError();
// if the server is already running, then inform it that it should
// open the guardian mutex so that it may be governed.
if (!error || error == ERROR_SERVICE_ALREADY_RUNNING)
{
// Make sure that it is actually ready to receive commands.
// If we were the one who started it, then it will need a few
// seconds to get ready.
while ((QueryServiceStatus(hService, &ServiceStatus) == TRUE) &&
(ServiceStatus.dwCurrentState != SERVICE_RUNNING))
{
Sleep(500);
}
ControlService(hService, SERVICE_CREATE_GUARDIAN_MUTEX, &ServiceStatus);
success = TRUE;
}
}
else
{
HWND hTmpWnd = FindWindow(szClassName, szWindowName);
if (hTmpWnd == NULL)
{
STARTUPINFO si;
SECURITY_ATTRIBUTES sa;
PROCESS_INFORMATION pi;
ZeroMemory(&si, sizeof(si));
si.cb = sizeof(si);
sa.nLength = sizeof(sa);
sa.lpSecurityDescriptor = NULL;
sa.bInheritHandle = TRUE;
success = CreateProcess(NULL, const_cast<char*>(prog_name.c_str()),
&sa, NULL, FALSE, 0, NULL, NULL, &si, &pi);
if (success != TRUE)
error = GetLastError();
procHandle = pi.hProcess;
// TMN: 04 Aug 2000 - closed the handle that previously leaked.
CloseHandle(pi.hThread);
}
else
{
SendMessage(hTmpWnd, WM_COMMAND, (WPARAM) IDM_GUARDED, 0);
DWORD server_pid;
GetWindowThreadProcessId(hTmpWnd, &server_pid);
procHandle = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION, FALSE, server_pid);
if (procHandle == NULL)
{
error = GetLastError();
success = FALSE;
}
else {
success = TRUE;
}
}
}
if (success != TRUE)
{
// error creating new process
char szMsgString[256];
LoadString(hInstance_gbl, IDS_CANT_START_THREAD, szMsgString, 256);
sprintf(out_buf, "%s : %s errno : %d", path.c_str(), szMsgString, error);
write_log(IDS_CANT_START_THREAD, out_buf);
if (service_flag)
{
SERVICE_STATUS status_info;
// wait a second to get the mutex handle (just in case) and
// then close it
WaitForSingleObject(procHandle, 1000);
CloseHandle(procHandle);
hService = OpenService(hScManager, remote_name->c_str(),
GENERIC_READ | GENERIC_EXECUTE);
ControlService(hService, SERVICE_CONTROL_STOP, &status_info);
CloseServiceHandle(hScManager);
CloseServiceHandle(hService);
CNTL_stop_service(); //service_name->c_str());
}
else
{
MessageBox(NULL, out_buf, NULL, MB_OK | MB_ICONSTOP);
PostMessage(hWndGbl, WM_CLOSE, 0, 0);
}
return 0;
}
else
{
char szMsgString[256];
LoadString(hInstance_gbl, IDS_STARTING_GUARD, szMsgString, 256);
sprintf(out_buf, "%s: %s\n", szMsgString, path.c_str());
write_log(IDS_LOG_START, out_buf);
}
// wait for process to terminate
DWORD exit_status;
if (service_flag)
{
while (WaitForSingleObject(procHandle, 500) == WAIT_OBJECT_0)
{
ReleaseMutex(procHandle);
Sleep(100);
}
const int ret_val = WaitForSingleObject(procHandle, INFINITE);
if (ret_val == WAIT_ABANDONED)
exit_status = CRASHED;
else if (ret_val == WAIT_OBJECT_0)
exit_status = NORMAL_EXIT;
CloseHandle(procHandle);
}
else
{
while (WaitForSingleObject(procHandle, INFINITE) == WAIT_FAILED)
;
GetExitCodeProcess(procHandle, &exit_status);
CloseHandle(procHandle);
}
if (exit_status != NORMAL_EXIT)
{
// check for startup error
if (exit_status == STARTUP_ERROR)
{
char szMsgString[256];
LoadString(hInstance_gbl, IDS_STARTUP_ERROR, szMsgString, 256);
sprintf(out_buf, "%s: %s (%lu)\n", path.c_str(), szMsgString, exit_status);
write_log(IDS_STARTUP_ERROR, out_buf);
done = true;
}
else
{
char szMsgString[256];
LoadString(hInstance_gbl, IDS_ABNORMAL_TERM, szMsgString, 256);
sprintf(out_buf, "%s: %s (%lu)\n", path.c_str(), szMsgString, exit_status);
write_log(IDS_LOG_TERM, out_buf);
// switch the icons if the server restarted
if (!service_flag)
PostMessage(hWndGbl, WM_SWITCHICONS, 0, 0);
if (option == START_FOREVER)
done = false;
}
}
else
{
// Normal shutdown - ie: via ibmgr - don't restart the server
char szMsgString[256];
LoadString(hInstance_gbl, IDS_NORMAL_TERM, szMsgString, 256);
sprintf(out_buf, "%s: %s\n", path.c_str(), szMsgString);
write_log(IDS_LOG_STOP, out_buf);
done = true;
}
if (option == START_ONCE)
done = true;
} while (!done);
// If on WINNT
if (service_flag)
{
CloseServiceHandle(hScManager);
CloseServiceHandle(hService);
CNTL_stop_service(); //(service_name->c_str());
}
else
PostMessage(hWndGbl, WM_CLOSE, 0, 0);
return 0;
}
static void write_log(int log_action, const char* buff)
{
/******************************************************************************
*
* w r i t e _ l o g
*
******************************************************************************
*
* Description: Writes the guardian information to either the Windows 95
* property sheet structure (log_entry) or to the Windows NT
* Event Log
*****************************************************************************/
const size_t BUFF_SIZE = 512;
char tmp_buff[BUFF_SIZE];
// Move to the end of the log_entry list
log_info* log_temp = log_entry;
while (log_temp->next)
log_temp = log_temp->next;
log_info* tmp = static_cast<log_info*>(malloc(sizeof(log_info)));
memset(tmp, 0, sizeof(log_info));
#ifdef NOT_USED_OR_REPLACED
time_t ltime;
time(<ime);
const tm* today = localtime(<ime);
sprintf(tmp->log_time, "%02d:%02d", today->tm_hour, today->tm_min);
sprintf(tmp->log_date, "%02d/%02d/%02d", today->tm_mon + 1, today->tm_mday, today->tm_year % 100);
#else
// TMN: Fixed this after bug-report. Should it really force
// 24hr format in e.g US, where they use AM/PM wharts?
GetTimeFormat(LOCALE_USER_DEFAULT, TIME_NOSECONDS | TIME_FORCE24HOURFORMAT, NULL, NULL,
tmp->log_time, sizeof(tmp->log_time));
GetDateFormat(LOCALE_USER_DEFAULT, DATE_SHORTDATE, NULL, NULL,
tmp->log_date, sizeof(tmp->log_date));
#endif
if (log_action >= IDS_LOG_START && log_action <= IDS_LOG_TERM)
{
// Only Windows 95 needs this information since it goes in the property sheet
LoadString(hInstance_gbl, log_action, tmp_buff, sizeof(tmp->log_action));
sprintf(tmp->log_action, "%s", tmp_buff);
tmp->next = NULL;
log_temp->next = tmp;
}
if (service_flag)
{
// on NT
HANDLE hLog = RegisterEventSource(NULL, service_name->c_str());
if (!hLog)
gds__log("Error opening Windows NT Event Log");
else
{
char buffer[BUFF_SIZE];
char* act_buff[1];
act_buff[0] = buffer;
LoadString(hInstance_gbl, log_action + 1, tmp_buff, sizeof(tmp_buff));
sprintf(act_buff[0], "%s", buff);
LPTSTR lpMsgBuf;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_ARGUMENT_ARRAY |
FORMAT_MESSAGE_FROM_STRING,
tmp_buff, 0, 0, (LPTSTR) &lpMsgBuf, 0,
reinterpret_cast<va_list*>(act_buff));
const int len = MIN(BUFF_SIZE - 1, strlen(lpMsgBuf) - 1);
strncpy(act_buff[0], lpMsgBuf, len);
act_buff[0][len] = 0;
LocalFree(lpMsgBuf);
WORD wLogType;
switch (log_action)
{
case IDS_LOG_START:
case IDS_LOG_STOP:
wLogType = EVENTLOG_INFORMATION_TYPE;
break;
default:
wLogType = EVENTLOG_ERROR_TYPE;
}
if (!ReportEvent
(hLog, wLogType, 0, log_action + 1, NULL, 1, 0,
const_cast<const char**>(act_buff), NULL))
{
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) & lpMsgBuf, 0, NULL);
gds__log("Unable to update NT Event Log.\n\tOS Message: %s", lpMsgBuf);
LocalFree(lpMsgBuf);
}
DeregisterEventSource(hLog);
}
}
// Write to the Firebird log
if (*buff)
gds__log(buff);
}
