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- #include "nssm.h"
- bool is_admin;
- bool use_critical_section;
- extern imports_t imports;
- const char *exit_action_strings[] = { "Restart", "Ignore", "Exit", "Suicide", 0 };
- static inline int throttle_milliseconds(unsigned long throttle) {
- /* pow() operates on doubles. */
- int ret = 1; for (unsigned long i = 1; i < throttle; i++) ret *= 2;
- return ret * 1000;
- }
- /*
- Wrapper to be called in a new thread so that we can acknowledge a STOP
- control immediately.
- */
- static unsigned long WINAPI shutdown_service(void *arg) {
- return stop_service((nssm_service_t *) arg, 0, true, true);
- }
- /* Connect to the service manager */
- SC_HANDLE open_service_manager() {
- SC_HANDLE ret = OpenSCManager(0, SERVICES_ACTIVE_DATABASE, SC_MANAGER_ALL_ACCESS);
- if (! ret) {
- if (is_admin) log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OPENSCMANAGER_FAILED, 0);
- return 0;
- }
- return ret;
- }
- /* Allocate and zero memory for a service. */
- nssm_service_t *alloc_nssm_service() {
- nssm_service_t *service = (nssm_service_t *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(nssm_service_t));
- if (! service) log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, "service", "alloc_nssm_service()", 0);
- return service;
- }
- /* Free memory for a service. */
- void cleanup_nssm_service(nssm_service_t *service) {
- if (! service) return;
- if (service->env) HeapFree(GetProcessHeap(), 0, service->env);
- if (service->env_extra) HeapFree(GetProcessHeap(), 0, service->env_extra);
- if (service->handle) CloseServiceHandle(service->handle);
- if (service->process_handle) CloseHandle(service->process_handle);
- if (service->wait_handle) UnregisterWait(service->process_handle);
- if (service->throttle_section_initialised) DeleteCriticalSection(&service->throttle_section);
- if (service->throttle_timer) CloseHandle(service->throttle_timer);
- HeapFree(GetProcessHeap(), 0, service);
- }
- /* About to install the service */
- int pre_install_service(int argc, char **argv) {
- /* Show the dialogue box if we didn't give the service name and path */
- if (argc < 2) return nssm_gui(IDD_INSTALL, argv[0]);
- nssm_service_t *service = alloc_nssm_service();
- if (! service) {
- print_message(stderr, NSSM_EVENT_OUT_OF_MEMORY, "service", "pre_install_service()");
- return 1;
- }
- memmove(service->name, argv[0], strlen(argv[0]));
- memmove(service->exe, argv[1], strlen(argv[1]));
- /* Arguments are optional */
- size_t flagslen = 0;
- size_t s = 0;
- int i;
- for (i = 2; i < argc; i++) flagslen += strlen(argv[i]) + 1;
- if (! flagslen) flagslen = 1;
- /*
- This probably isn't UTF8-safe and should use std::string or something
- but it's been broken for the best part of a decade and due for a rewrite
- anyway so it'll do as a quick-'n'-dirty fix. Note that we don't free
- the flags buffer but as the program exits that isn't a big problem.
- */
- for (i = 2; i < argc; i++) {
- size_t len = strlen(argv[i]);
- memmove(service->flags + s, argv[i], len);
- s += len;
- if (i < argc - 1) service->flags[s++] = ' ';
- }
- /* Work out directory name */
- memmove(service->dir, service->exe, sizeof(service->dir));
- strip_basename(service->dir);
- int ret = install_service(service);
- cleanup_nssm_service(service);
- return ret;
- }
- /* About to remove the service */
- int pre_remove_service(int argc, char **argv) {
- /* Show dialogue box if we didn't pass service name and "confirm" */
- if (argc < 2) return nssm_gui(IDD_REMOVE, argv[0]);
- if (str_equiv(argv[1], "confirm")) {
- nssm_service_t *service = alloc_nssm_service();
- memmove(service->name, argv[0], strlen(argv[0]));
- int ret = remove_service(service);
- cleanup_nssm_service(service);
- return ret;
- }
- print_message(stderr, NSSM_MESSAGE_PRE_REMOVE_SERVICE);
- return 100;
- }
- /* Install the service */
- int install_service(nssm_service_t *service) {
- if (! service) return 1;
- /* Open service manager */
- SC_HANDLE services = open_service_manager();
- if (! services) {
- print_message(stderr, NSSM_MESSAGE_OPEN_SERVICE_MANAGER_FAILED);
- cleanup_nssm_service(service);
- return 2;
- }
- /* Get path of this program */
- char path[MAX_PATH];
- GetModuleFileName(0, path, MAX_PATH);
- /* Construct command */
- char command[CMD_LENGTH];
- size_t pathlen = strlen(path);
- if (pathlen + 1 >= VALUE_LENGTH) {
- print_message(stderr, NSSM_MESSAGE_PATH_TOO_LONG, NSSM);
- return 3;
- }
- if (_snprintf_s(command, sizeof(command), _TRUNCATE, "\"%s\"", path) < 0) {
- print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY_FOR_IMAGEPATH);
- return 4;
- }
- /* Create the service */
- service->handle = CreateService(services, service->name, service->name, SC_MANAGER_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL, command, 0, 0, 0, 0, 0);
- if (! service->handle) {
- print_message(stderr, NSSM_MESSAGE_CREATESERVICE_FAILED);
- CloseServiceHandle(services);
- return 5;
- }
- /* Now we need to put the parameters into the registry */
- if (create_parameters(service)) {
- print_message(stderr, NSSM_MESSAGE_CREATE_PARAMETERS_FAILED);
- DeleteService(service->handle);
- CloseServiceHandle(services);
- return 6;
- }
- set_service_recovery(service);
- print_message(stdout, NSSM_MESSAGE_SERVICE_INSTALLED, service->name);
- /* Cleanup */
- CloseServiceHandle(services);
- return 0;
- }
- /* Remove the service */
- int remove_service(nssm_service_t *service) {
- if (! service) return 1;
- /* Open service manager */
- SC_HANDLE services = open_service_manager();
- if (! services) {
- print_message(stderr, NSSM_MESSAGE_OPEN_SERVICE_MANAGER_FAILED);
- return 2;
- }
- /* Try to open the service */
- service->handle = OpenService(services, service->name, SC_MANAGER_ALL_ACCESS);
- if (! service->handle) {
- print_message(stderr, NSSM_MESSAGE_OPENSERVICE_FAILED);
- CloseServiceHandle(services);
- return 3;
- }
- /* Try to delete the service */
- if (! DeleteService(service->handle)) {
- print_message(stderr, NSSM_MESSAGE_DELETESERVICE_FAILED);
- CloseServiceHandle(services);
- return 4;
- }
- /* Cleanup */
- CloseServiceHandle(services);
- print_message(stdout, NSSM_MESSAGE_SERVICE_REMOVED, service->name);
- return 0;
- }
- /* Service initialisation */
- void WINAPI service_main(unsigned long argc, char **argv) {
- nssm_service_t *service = alloc_nssm_service();
- if (! service) return;
- if (_snprintf_s(service->name, sizeof(service->name), _TRUNCATE, "%s", argv[0]) < 0) {
- log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, "service->name", "service_main()", 0);
- return;
- }
- /* We can use a condition variable in a critical section on Vista or later. */
- if (imports.SleepConditionVariableCS && imports.WakeConditionVariable) use_critical_section = true;
- else use_critical_section = false;
- /* Initialise status */
- ZeroMemory(&service->status, sizeof(service->status));
- service->status.dwServiceType = SERVICE_WIN32_OWN_PROCESS | SERVICE_INTERACTIVE_PROCESS;
- service->status.dwControlsAccepted = SERVICE_ACCEPT_SHUTDOWN | SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE;
- service->status.dwWin32ExitCode = NO_ERROR;
- service->status.dwServiceSpecificExitCode = 0;
- service->status.dwCheckPoint = 0;
- service->status.dwWaitHint = NSSM_WAITHINT_MARGIN;
- /* Signal we AREN'T running the server */
- service->process_handle = 0;
- service->pid = 0;
- /* Register control handler */
- service->status_handle = RegisterServiceCtrlHandlerEx(NSSM, service_control_handler, (void *) service);
- if (! service->status_handle) {
- log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_REGISTERSERVICECTRLHANDER_FAILED, error_string(GetLastError()), 0);
- return;
- }
- log_service_control(service->name, 0, true);
- service->status.dwCurrentState = SERVICE_START_PENDING;
- service->status.dwWaitHint = service->throttle_delay + NSSM_WAITHINT_MARGIN;
- SetServiceStatus(service->status_handle, &service->status);
- if (is_admin) {
- /* Try to create the exit action parameters; we don't care if it fails */
- create_exit_action(service->name, exit_action_strings[0]);
- SC_HANDLE services = open_service_manager();
- if (services) {
- service->handle = OpenService(services, service->name, SC_MANAGER_ALL_ACCESS);
- set_service_recovery(service);
- CloseServiceHandle(services);
- }
- }
- /* Used for signalling a resume if the service pauses when throttled. */
- if (use_critical_section) {
- InitializeCriticalSection(&service->throttle_section);
- service->throttle_section_initialised = true;
- }
- else {
- service->throttle_timer = CreateWaitableTimer(0, 1, 0);
- if (! service->throttle_timer) {
- log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_CREATEWAITABLETIMER_FAILED, service->name, error_string(GetLastError()), 0);
- }
- }
- monitor_service(service);
- }
- /* Make sure service recovery actions are taken where necessary */
- void set_service_recovery(nssm_service_t *service) {
- SERVICE_FAILURE_ACTIONS_FLAG flag;
- ZeroMemory(&flag, sizeof(flag));
- flag.fFailureActionsOnNonCrashFailures = true;
- /* This functionality was added in Vista so the call may fail */
- if (! ChangeServiceConfig2(service->handle, SERVICE_CONFIG_FAILURE_ACTIONS_FLAG, &flag)) {
- unsigned long error = GetLastError();
- /* Pre-Vista we expect to fail with ERROR_INVALID_LEVEL */
- if (error != ERROR_INVALID_LEVEL) {
- log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CHANGESERVICECONFIG2_FAILED, service->name, error_string(error), 0);
- }
- }
- }
- int monitor_service(nssm_service_t *service) {
- /* Set service status to started */
- int ret = start_service(service);
- if (ret) {
- char code[16];
- _snprintf_s(code, sizeof(code), _TRUNCATE, "%d", ret);
- log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_START_SERVICE_FAILED, service->exe, service->name, ret, 0);
- return ret;
- }
- log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_STARTED_SERVICE, service->exe, service->flags, service->name, service->dir, 0);
- /* Monitor service */
- if (! RegisterWaitForSingleObject(&service->wait_handle, service->process_handle, end_service, (void *) service, INFINITE, WT_EXECUTEONLYONCE | WT_EXECUTELONGFUNCTION)) {
- log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_REGISTERWAITFORSINGLEOBJECT_FAILED, service->name, service->exe, error_string(GetLastError()), 0);
- }
- return 0;
- }
- char *service_control_text(unsigned long control) {
- switch (control) {
- /* HACK: there is no SERVICE_CONTROL_START constant */
- case 0: return "START";
- case SERVICE_CONTROL_STOP: return "STOP";
- case SERVICE_CONTROL_SHUTDOWN: return "SHUTDOWN";
- case SERVICE_CONTROL_PAUSE: return "PAUSE";
- case SERVICE_CONTROL_CONTINUE: return "CONTINUE";
- case SERVICE_CONTROL_INTERROGATE: return "INTERROGATE";
- default: return 0;
- }
- }
- void log_service_control(char *service_name, unsigned long control, bool handled) {
- char *text = service_control_text(control);
- unsigned long event;
- if (! text) {
- /* "0x" + 8 x hex + NULL */
- text = (char *) HeapAlloc(GetProcessHeap(), 0, 11);
- if (! text) {
- log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, "control code", "log_service_control()", 0);
- return;
- }
- if (_snprintf_s(text, 11, _TRUNCATE, "0x%08x", control) < 0) {
- log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, "control code", "log_service_control()", 0);
- HeapFree(GetProcessHeap(), 0, text);
- return;
- }
- event = NSSM_EVENT_SERVICE_CONTROL_UNKNOWN;
- }
- else if (handled) event = NSSM_EVENT_SERVICE_CONTROL_HANDLED;
- else event = NSSM_EVENT_SERVICE_CONTROL_NOT_HANDLED;
- log_event(EVENTLOG_INFORMATION_TYPE, event, service_name, text, 0);
- if (event == NSSM_EVENT_SERVICE_CONTROL_UNKNOWN) {
- HeapFree(GetProcessHeap(), 0, text);
- }
- }
- /* Service control handler */
- unsigned long WINAPI service_control_handler(unsigned long control, unsigned long event, void *data, void *context) {
- nssm_service_t *service = (nssm_service_t *) context;
- switch (control) {
- case SERVICE_CONTROL_INTERROGATE:
- /* We always keep the service status up-to-date so this is a no-op. */
- return NO_ERROR;
- case SERVICE_CONTROL_SHUTDOWN:
- case SERVICE_CONTROL_STOP:
- log_service_control(service->name, control, true);
- /*
- We MUST acknowledge the stop request promptly but we're committed to
- waiting for the application to exit. Spawn a new thread to wait
- while we acknowledge the request.
- */
- if (! CreateThread(NULL, 0, shutdown_service, context, 0, NULL)) {
- log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATETHREAD_FAILED, error_string(GetLastError()), 0);
- /*
- We couldn't create a thread to tidy up so we'll have to force the tidyup
- to complete in time in this thread.
- */
- service->kill_console_delay = NSSM_KILL_CONSOLE_GRACE_PERIOD;
- service->kill_window_delay = NSSM_KILL_WINDOW_GRACE_PERIOD;
- service->kill_threads_delay = NSSM_KILL_THREADS_GRACE_PERIOD;
- stop_service(service, 0, true, true);
- }
- return NO_ERROR;
- case SERVICE_CONTROL_CONTINUE:
- log_service_control(service->name, control, true);
- service->throttle = 0;
- if (use_critical_section) imports.WakeConditionVariable(&service->throttle_condition);
- else {
- if (! service->throttle_timer) return ERROR_CALL_NOT_IMPLEMENTED;
- ZeroMemory(&service->throttle_duetime, sizeof(service->throttle_duetime));
- SetWaitableTimer(service->throttle_timer, &service->throttle_duetime, 0, 0, 0, 0);
- }
- service->status.dwCurrentState = SERVICE_CONTINUE_PENDING;
- service->status.dwWaitHint = throttle_milliseconds(service->throttle) + NSSM_WAITHINT_MARGIN;
- log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_RESET_THROTTLE, service->name, 0);
- SetServiceStatus(service->status_handle, &service->status);
- return NO_ERROR;
- case SERVICE_CONTROL_PAUSE:
- /*
- We don't accept pause messages but it isn't possible to register
- only for continue messages so we have to handle this case.
- */
- log_service_control(service->name, control, false);
- return ERROR_CALL_NOT_IMPLEMENTED;
- }
- /* Unknown control */
- log_service_control(service->name, control, false);
- return ERROR_CALL_NOT_IMPLEMENTED;
- }
- /* Start the service */
- int start_service(nssm_service_t *service) {
- service->stopping = false;
- service->allow_restart = true;
- if (service->process_handle) return 0;
- /* Allocate a STARTUPINFO structure for a new process */
- STARTUPINFO si;
- ZeroMemory(&si, sizeof(si));
- si.cb = sizeof(si);
- /* Allocate a PROCESSINFO structure for the process */
- PROCESS_INFORMATION pi;
- ZeroMemory(&pi, sizeof(pi));
- /* Get startup parameters */
- int ret = get_parameters(service, &si);
- if (ret) {
- log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_GET_PARAMETERS_FAILED, service->name, 0);
- return stop_service(service, 2, true, true);
- }
- /* Launch executable with arguments */
- char cmd[CMD_LENGTH];
- if (_snprintf_s(cmd, sizeof(cmd), _TRUNCATE, "\"%s\" %s", service->exe, service->flags) < 0) {
- log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, "command line", "start_service", 0);
- close_output_handles(&si);
- return stop_service(service, 2, true, true);
- }
- throttle_restart(service);
- bool inherit_handles = false;
- if (si.dwFlags & STARTF_USESTDHANDLES) inherit_handles = true;
- if (! CreateProcess(0, cmd, 0, 0, inherit_handles, 0, service->env, service->dir, &si, &pi)) {
- unsigned long error = GetLastError();
- if (error == ERROR_INVALID_PARAMETER && service->env) log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEPROCESS_FAILED_INVALID_ENVIRONMENT, service->name, service->exe, NSSM_REG_ENV, 0);
- else log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEPROCESS_FAILED, service->name, service->exe, error_string(error), 0);
- close_output_handles(&si);
- return stop_service(service, 3, true, true);
- }
- service->process_handle = pi.hProcess;
- service->pid = pi.dwProcessId;
- if (get_process_creation_time(service->process_handle, &service->creation_time)) ZeroMemory(&service->creation_time, sizeof(service->creation_time));
- close_output_handles(&si);
- /*
- Wait for a clean startup before changing the service status to RUNNING
- but be mindful of the fact that we are blocking the service control manager
- so abandon the wait before too much time has elapsed.
- */
- unsigned long delay = service->throttle_delay;
- if (delay > NSSM_SERVICE_STATUS_DEADLINE) {
- char delay_milliseconds[16];
- _snprintf_s(delay_milliseconds, sizeof(delay_milliseconds), _TRUNCATE, "%lu", delay);
- char deadline_milliseconds[16];
- _snprintf_s(deadline_milliseconds, sizeof(deadline_milliseconds), _TRUNCATE, "%lu", NSSM_SERVICE_STATUS_DEADLINE);
- log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_STARTUP_DELAY_TOO_LONG, service->name, delay_milliseconds, NSSM, deadline_milliseconds, 0);
- delay = NSSM_SERVICE_STATUS_DEADLINE;
- }
- unsigned long deadline = WaitForSingleObject(service->process_handle, delay);
- /* Signal successful start */
- service->status.dwCurrentState = SERVICE_RUNNING;
- SetServiceStatus(service->status_handle, &service->status);
- /* Continue waiting for a clean startup. */
- if (deadline == WAIT_TIMEOUT) {
- if (service->throttle_delay > delay) {
- if (WaitForSingleObject(service->process_handle, service->throttle_delay - delay) == WAIT_TIMEOUT) service->throttle = 0;
- }
- else service->throttle = 0;
- }
- return 0;
- }
- /* Stop the service */
- int stop_service(nssm_service_t *service, unsigned long exitcode, bool graceful, bool default_action) {
- service->allow_restart = false;
- if (service->wait_handle) {
- UnregisterWait(service->wait_handle);
- service->wait_handle = 0;
- }
- if (default_action && ! exitcode && ! graceful) {
- log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_GRACEFUL_SUICIDE, service->name, service->exe, exit_action_strings[NSSM_EXIT_UNCLEAN], exit_action_strings[NSSM_EXIT_UNCLEAN], exit_action_strings[NSSM_EXIT_UNCLEAN], exit_action_strings[NSSM_EXIT_REALLY] ,0);
- graceful = true;
- }
- /* Signal we are stopping */
- if (graceful) {
- service->status.dwCurrentState = SERVICE_STOP_PENDING;
- service->status.dwWaitHint = NSSM_WAITHINT_MARGIN;
- SetServiceStatus(service->status_handle, &service->status);
- }
- /* Nothing to do if service isn't running */
- if (service->pid) {
- /* Shut down service */
- log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_TERMINATEPROCESS, service->name, service->exe, 0);
- kill_process(service, service->process_handle, service->pid, 0);
- }
- else log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_PROCESS_ALREADY_STOPPED, service->name, service->exe, 0);
- end_service((void *) service, true);
- /* Signal we stopped */
- if (graceful) {
- service->status.dwCurrentState = SERVICE_STOPPED;
- if (exitcode) {
- service->status.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR;
- service->status.dwServiceSpecificExitCode = exitcode;
- }
- else {
- service->status.dwWin32ExitCode = NO_ERROR;
- service->status.dwServiceSpecificExitCode = 0;
- }
- SetServiceStatus(service->status_handle, &service->status);
- }
- return exitcode;
- }
- /* Callback function triggered when the server exits */
- void CALLBACK end_service(void *arg, unsigned char why) {
- nssm_service_t *service = (nssm_service_t *) arg;
- if (service->stopping) return;
- service->stopping = true;
- /* Check exit code */
- unsigned long exitcode = 0;
- char code[16];
- GetExitCodeProcess(service->process_handle, &exitcode);
- if (exitcode == STILL_ACTIVE || get_process_exit_time(service->process_handle, &service->exit_time)) GetSystemTimeAsFileTime(&service->exit_time);
- CloseHandle(service->process_handle);
- service->process_handle = 0;
- service->pid = 0;
- /*
- Log that the service ended BEFORE logging about killing the process
- tree. See below for the possible values of the why argument.
- */
- if (! why) {
- _snprintf_s(code, sizeof(code), _TRUNCATE, "%lu", exitcode);
- log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_ENDED_SERVICE, service->exe, service->name, code, 0);
- }
- /* Clean up. */
- if (exitcode == STILL_ACTIVE) exitcode = 0;
- kill_process_tree(service, service->pid, exitcode, service->pid);
- /*
- The why argument is true if our wait timed out or false otherwise.
- Our wait is infinite so why will never be true when called by the system.
- If it is indeed true, assume we were called from stop_service() because
- this is a controlled shutdown, and don't take any restart action.
- */
- if (why) return;
- if (! service->allow_restart) return;
- /* What action should we take? */
- int action = NSSM_EXIT_RESTART;
- unsigned char action_string[ACTION_LEN];
- bool default_action;
- if (! get_exit_action(service->name, &exitcode, action_string, &default_action)) {
- for (int i = 0; exit_action_strings[i]; i++) {
- if (! _strnicmp((const char *) action_string, exit_action_strings[i], ACTION_LEN)) {
- action = i;
- break;
- }
- }
- }
- switch (action) {
- /* Try to restart the service or return failure code to service manager */
- case NSSM_EXIT_RESTART:
- log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_EXIT_RESTART, service->name, code, exit_action_strings[action], service->exe, 0);
- while (monitor_service(service)) {
- log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_RESTART_SERVICE_FAILED, service->exe, service->name, 0);
- Sleep(30000);
- }
- break;
- /* Do nothing, just like srvany would */
- case NSSM_EXIT_IGNORE:
- log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_EXIT_IGNORE, service->name, code, exit_action_strings[action], service->exe, 0);
- Sleep(INFINITE);
- break;
- /* Tell the service manager we are finished */
- case NSSM_EXIT_REALLY:
- log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_EXIT_REALLY, service->name, code, exit_action_strings[action], 0);
- stop_service(service, exitcode, true, default_action);
- break;
- /* Fake a crash so pre-Vista service managers will run recovery actions. */
- case NSSM_EXIT_UNCLEAN:
- log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_EXIT_UNCLEAN, service->name, code, exit_action_strings[action], 0);
- stop_service(service, exitcode, false, default_action);
- free_imports();
- exit(exitcode);
- break;
- }
- }
- void throttle_restart(nssm_service_t *service) {
- /* This can't be a restart if the service is already running. */
- if (! service->throttle++) return;
- int ms = throttle_milliseconds(service->throttle);
- if (service->throttle > 7) service->throttle = 8;
- char threshold[8], milliseconds[8];
- _snprintf_s(threshold, sizeof(threshold), _TRUNCATE, "%lu", service->throttle_delay);
- _snprintf_s(milliseconds, sizeof(milliseconds), _TRUNCATE, "%lu", ms);
- log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_THROTTLED, service->name, threshold, milliseconds, 0);
- if (use_critical_section) EnterCriticalSection(&service->throttle_section);
- else if (service->throttle_timer) {
- ZeroMemory(&service->throttle_duetime, sizeof(service->throttle_duetime));
- service->throttle_duetime.QuadPart = 0 - (ms * 10000LL);
- SetWaitableTimer(service->throttle_timer, &service->throttle_duetime, 0, 0, 0, 0);
- }
- service->status.dwCurrentState = SERVICE_PAUSED;
- SetServiceStatus(service->status_handle, &service->status);
- if (use_critical_section) {
- imports.SleepConditionVariableCS(&service->throttle_condition, &service->throttle_section, ms);
- LeaveCriticalSection(&service->throttle_section);
- }
- else {
- if (service->throttle_timer) WaitForSingleObject(service->throttle_timer, INFINITE);
- else Sleep(ms);
- }
- }
- /*
- When responding to a stop (or any other) request we need to set dwWaitHint to
- the number of milliseconds we expect the operation to take, and optionally
- increase dwCheckPoint. If dwWaitHint milliseconds elapses without the
- operation completing or dwCheckPoint increasing, the system will consider the
- service to be hung.
- However the system will consider the service to be hung after 30000
- milliseconds regardless of the value of dwWaitHint if dwCheckPoint has not
- changed. Therefore if we want to wait longer than that we must periodically
- increase dwCheckPoint.
- Furthermore, it will consider the service to be hung after 60000 milliseconds
- regardless of the value of dwCheckPoint unless dwWaitHint is increased every
- time dwCheckPoint is also increased.
- Our strategy then is to retrieve the initial dwWaitHint and wait for
- NSSM_SERVICE_STATUS_DEADLINE milliseconds. If the process is still running
- and we haven't finished waiting we increment dwCheckPoint and add whichever is
- smaller of NSSM_SERVICE_STATUS_DEADLINE or the remaining timeout to
- dwWaitHint.
- Only doing both these things will prevent the system from killing the service.
- Returns: 1 if the wait timed out.
- 0 if the wait completed.
- -1 on error.
- */
- int await_shutdown(nssm_service_t *service, char *function_name, unsigned long timeout) {
- unsigned long interval;
- unsigned long waithint;
- unsigned long ret;
- unsigned long waited;
- char interval_milliseconds[16];
- char timeout_milliseconds[16];
- char waited_milliseconds[16];
- char *function = function_name;
- /* Add brackets to function name. */
- size_t funclen = strlen(function_name) + 3;
- char *func = (char *) HeapAlloc(GetProcessHeap(), 0, funclen);
- if (func) {
- if (_snprintf_s(func, funclen, _TRUNCATE, "%s()", function_name) > -1) function = func;
- }
- _snprintf_s(timeout_milliseconds, sizeof(timeout_milliseconds), _TRUNCATE, "%lu", timeout);
- waithint = service->status.dwWaitHint;
- waited = 0;
- while (waited < timeout) {
- interval = timeout - waited;
- if (interval > NSSM_SERVICE_STATUS_DEADLINE) interval = NSSM_SERVICE_STATUS_DEADLINE;
- service->status.dwCurrentState = SERVICE_STOP_PENDING;
- service->status.dwWaitHint += interval;
- service->status.dwCheckPoint++;
- SetServiceStatus(service->status_handle, &service->status);
- if (waited) {
- _snprintf_s(waited_milliseconds, sizeof(waited_milliseconds), _TRUNCATE, "%lu", waited);
- _snprintf_s(interval_milliseconds, sizeof(interval_milliseconds), _TRUNCATE, "%lu", interval);
- log_event(EVENTLOG_INFORMATION_TYPE, NSSM_EVENT_AWAITING_SHUTDOWN, function, service->name, waited_milliseconds, interval_milliseconds, timeout_milliseconds, 0);
- }
- switch (WaitForSingleObject(service->process_handle, interval)) {
- case WAIT_OBJECT_0:
- ret = 0;
- goto awaited;
- case WAIT_TIMEOUT:
- ret = 1;
- break;
- default:
- ret = -1;
- goto awaited;
- }
- waited += interval;
- }
- awaited:
- if (func) HeapFree(GetProcessHeap(), 0, func);
- return ret;
- }
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