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@@ -1,5 +1,19 @@
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#include "nssm.h"
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+static HANDLE create_logging_thread(logger_t *logger) {
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+ HANDLE thread_handle = CreateThread(NULL, 0, log_and_rotate, (void *) logger, 0, logger->tid_ptr);
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+ if (! thread_handle) log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATETHREAD_FAILED, error_string(GetLastError()), 0);
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+ return thread_handle;
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+}
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+
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+static inline void write_bom(logger_t *logger) {
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+ wchar_t bom = L'\ufeff';
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+ unsigned long out;
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+ if (! WriteFile(logger->write_handle, (void *) &bom, sizeof(bom), &out, 0)) {
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+ log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_SOMEBODY_SET_UP_US_THE_BOM, logger->service_name, logger->path, error_string(GetLastError()), 0);
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+ }
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+}
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+
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/* Get path, share mode, creation disposition and flags for a stream. */
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int get_createfile_parameters(HKEY key, TCHAR *prefix, TCHAR *path, unsigned long *sharing, unsigned long default_sharing, unsigned long *disposition, unsigned long default_disposition, unsigned long *flags, unsigned long default_flags) {
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TCHAR value[NSSM_STDIO_LENGTH];
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@@ -93,6 +107,22 @@ HANDLE append_to_file(TCHAR *path, unsigned long sharing, SECURITY_ATTRIBUTES *a
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return CreateFile(path, FILE_WRITE_DATA, sharing, attributes, disposition, flags, 0);
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}
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+static void rotated_filename(TCHAR *path, TCHAR *rotated, unsigned long rotated_len, SYSTEMTIME *st) {
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+ if (! st) {
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+ SYSTEMTIME now;
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+ st = &now;
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+ GetSystemTime(st);
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+ }
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+
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+ TCHAR buffer[MAX_PATH];
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+ memmove(buffer, path, sizeof(buffer));
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+ TCHAR *ext = PathFindExtension(buffer);
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+ TCHAR extension[MAX_PATH];
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+ _sntprintf_s(extension, _countof(extension), _TRUNCATE, _T("-%04u%02u%02uT%02u%02u%02u.%03u%s"), st->wYear, st->wMonth, st->wDay, st->wHour, st->wMinute, st->wSecond, st->wMilliseconds, ext);
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+ *ext = _T('\0');
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+ _sntprintf_s(rotated, rotated_len, _TRUNCATE, _T("%s%s"), buffer, extension);
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+}
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+
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void rotate_file(TCHAR *service_name, TCHAR *path, unsigned long seconds, unsigned long low, unsigned long high) {
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unsigned long error;
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@@ -146,14 +176,8 @@ void rotate_file(TCHAR *service_name, TCHAR *path, unsigned long seconds, unsign
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/* Get new filename. */
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FileTimeToSystemTime(&info.ftLastWriteTime, &st);
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- TCHAR buffer[MAX_PATH];
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- memmove(buffer, path, sizeof(buffer));
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- TCHAR *ext = PathFindExtension(buffer);
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- TCHAR extension[MAX_PATH];
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- _sntprintf_s(extension, _countof(extension), _TRUNCATE, _T("-%04u%02u%02uT%02u%02u%02u.%03u%s"), st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond, st.wMilliseconds, ext);
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- *ext = _T('\0');
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TCHAR rotated[MAX_PATH];
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- _sntprintf_s(rotated, _countof(rotated), _TRUNCATE, _T("%s%s"), buffer, extension);
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+ rotated_filename(path, rotated, _countof(rotated), &st);
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/* Rotate. */
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if (MoveFile(path, rotated)) return;
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@@ -186,6 +210,10 @@ int get_output_handles(nssm_service_t *service, HKEY key, STARTUPINFO *si) {
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set_flags = true;
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}
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+ ULARGE_INTEGER size;
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+ size.LowPart = service->rotate_bytes_low;
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+ size.HighPart = service->rotate_bytes_high;
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+
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/* stdout */
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if (get_createfile_parameters(key, NSSM_REG_STDOUT, service->stdout_path, &service->stdout_sharing, NSSM_STDOUT_SHARING, &service->stdout_disposition, NSSM_STDOUT_DISPOSITION, &service->stdout_flags, NSSM_STDOUT_FLAGS)) {
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service->stdout_sharing = service->stdout_disposition = service->stdout_flags = 0;
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@@ -194,8 +222,58 @@ int get_output_handles(nssm_service_t *service, HKEY key, STARTUPINFO *si) {
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}
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if (si && service->stdout_path[0]) {
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if (service->rotate_files) rotate_file(service->name, service->stdout_path, service->rotate_seconds, service->rotate_bytes_low, service->rotate_bytes_high);
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- si->hStdOutput = append_to_file(service->stdout_path, service->stdout_sharing, &attributes, service->stdout_disposition, service->stdout_flags);
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- if (! si->hStdOutput) return 4;
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+ HANDLE stdout_handle = append_to_file(service->stdout_path, service->stdout_sharing, 0, service->stdout_disposition, service->stdout_flags);
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+ if (! stdout_handle) {
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+ log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEFILE_FAILED, service->stdout_path, error_string(GetLastError()), 0);
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+ return 4;
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+ }
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+
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+ /* Try online rotation only if a size threshold is set. */
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+ logger_t *stdout_logger = 0;
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+ if (service->rotate_files && service->rotate_stdout_online && size.QuadPart) {
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+ stdout_logger = (logger_t *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(logger_t));
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+ if (stdout_logger) {
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+ /* Pipe between application's stdout and our logging handle. */
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+ if (CreatePipe(&service->stdout_pipe, &si->hStdOutput, &attributes, 0)) {
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+ stdout_logger->service_name = service->name;
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+ stdout_logger->path = service->stdout_path;
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+ stdout_logger->sharing = service->stdout_sharing;
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+ stdout_logger->disposition = service->stdout_disposition;
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+ stdout_logger->flags = service->stdout_flags;
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+ stdout_logger->read_handle = service->stdout_pipe;
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+ stdout_logger->write_handle = stdout_handle;
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+ stdout_logger->size = (__int64) size.QuadPart;
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+ stdout_logger->tid_ptr = &service->stdout_tid;
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+
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+ /* Logging thread. */
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+ service->stdout_thread = create_logging_thread(stdout_logger);
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+ if (! service->stdout_thread) {
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+ log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEPIPE_FAILED, service->name, service->stdout_path, error_string(GetLastError()));
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+ CloseHandle(service->stdout_pipe);
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+ CloseHandle(si->hStdOutput);
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+ service->stdout_tid = 0;
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+ }
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+ }
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+ else service->stdout_tid = 0;
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+ }
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+ else {
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+ log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("stdout_logger"), _T("get_output_handles()"), 0);
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+ service->stdout_tid = 0;
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+ }
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+
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+ /* Fall through to try direct I/O. */
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+ if (! service->stdout_tid) log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEPIPE_FAILED, service->name, service->stdout_path, error_string(GetLastError()));
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+ }
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+
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+ if (! service->stdout_tid) {
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+ if (stdout_logger) HeapFree(GetProcessHeap(), 0, stdout_logger);
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+ if (! DuplicateHandle(GetCurrentProcess(), stdout_handle, GetCurrentProcess(), &si->hStdOutput, 0, true, DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS)) {
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+ log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_DUPLICATEHANDLE_FAILED, NSSM_REG_STDOUT, error_string(GetLastError()), 0);
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+ return 4;
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+ }
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+ service->rotate_stdout_online = false;
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+ }
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+
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set_flags = true;
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}
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@@ -211,6 +289,7 @@ int get_output_handles(nssm_service_t *service, HKEY key, STARTUPINFO *si) {
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service->stderr_sharing = service->stdout_sharing;
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service->stderr_disposition = service->stdout_disposition;
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service->stderr_flags = service->stdout_flags;
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+ service->rotate_stderr_online = false;
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if (si) {
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/* Two handles to the same file will create a race. */
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@@ -222,13 +301,59 @@ int get_output_handles(nssm_service_t *service, HKEY key, STARTUPINFO *si) {
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}
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else if (si) {
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if (service->rotate_files) rotate_file(service->name, service->stderr_path, service->rotate_seconds, service->rotate_bytes_low, service->rotate_bytes_high);
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- si->hStdError = append_to_file(service->stderr_path, service->stdout_sharing, &attributes, service->stdout_disposition, service->stdout_flags);
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- if (! si->hStdError) {
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+ HANDLE stderr_handle = append_to_file(service->stderr_path, service->stdout_sharing, 0, service->stdout_disposition, service->stdout_flags);
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+ if (! stderr_handle) {
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log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEFILE_FAILED, service->stderr_path, error_string(GetLastError()), 0);
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return 7;
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}
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- SetEndOfFile(si->hStdError);
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+
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+ /* Try online rotation only if a size threshold is set. */
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+ logger_t *stderr_logger = 0;
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+ if (service->rotate_files && service->rotate_stderr_online && size.QuadPart) {
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+ stderr_logger = (logger_t *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(logger_t));
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+ if (stderr_logger) {
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+ /* Pipe between application's stderr and our logging handle. */
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+ if (CreatePipe(&service->stderr_pipe, &si->hStdError, &attributes, 0)) {
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+ stderr_logger->service_name = service->name;
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+ stderr_logger->path = service->stderr_path;
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+ stderr_logger->sharing = service->stderr_sharing;
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+ stderr_logger->disposition = service->stderr_disposition;
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+ stderr_logger->flags = service->stderr_flags;
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+ stderr_logger->read_handle = service->stderr_pipe;
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+ stderr_logger->write_handle = stderr_handle;
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+ stderr_logger->size = (__int64) size.QuadPart;
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+ stderr_logger->tid_ptr = &service->stderr_tid;
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+
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+ /* Logging thread. */
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+ service->stderr_thread = create_logging_thread(stderr_logger);
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+ if (! service->stderr_thread) {
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+ log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEPIPE_FAILED, service->name, service->stderr_path, error_string(GetLastError()));
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+ CloseHandle(service->stderr_pipe);
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+ CloseHandle(si->hStdError);
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+ service->stderr_tid = 0;
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+ }
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+ }
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+ else service->stderr_tid = 0;
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+ }
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+ else {
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+ log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("stderr_logger"), _T("get_output_handles()"), 0);
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+ service->stderr_tid = 0;
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+ }
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+
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+ /* Fall through to try direct I/O. */
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+ if (! service->stderr_tid) log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEPIPE_FAILED, service->name, service->stderr_path, error_string(GetLastError()));
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+ }
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+
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+ if (! service->stderr_tid) {
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+ if (stderr_logger) HeapFree(GetProcessHeap(), 0, stderr_logger);
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+ if (! DuplicateHandle(GetCurrentProcess(), stderr_handle, GetCurrentProcess(), &si->hStdError, 0, true, DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS)) {
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+ log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_DUPLICATEHANDLE_FAILED, NSSM_REG_STDERR, error_string(GetLastError()), 0);
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+ return 7;
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+ }
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+ service->rotate_stderr_online = false;
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+ }
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}
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+
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set_flags = true;
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}
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@@ -243,8 +368,111 @@ int get_output_handles(nssm_service_t *service, HKEY key, STARTUPINFO *si) {
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return 0;
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}
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-void close_output_handles(STARTUPINFO *si) {
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+void close_output_handles(STARTUPINFO *si, bool close_stdout, bool close_stderr) {
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if (si->hStdInput) CloseHandle(si->hStdInput);
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- if (si->hStdOutput) CloseHandle(si->hStdOutput);
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- if (si->hStdError) CloseHandle(si->hStdError);
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+ if (si->hStdOutput && close_stdout) CloseHandle(si->hStdOutput);
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+ if (si->hStdError && close_stderr) CloseHandle(si->hStdError);
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+}
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+
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+void close_output_handles(STARTUPINFO *si) {
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+ return close_output_handles(si, true, true);
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+}
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+
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+/* Wrapper to be called in a new thread for logging. */
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+unsigned long WINAPI log_and_rotate(void *arg) {
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+ logger_t *logger = (logger_t *) arg;
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+ if (! logger) return 1;
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+
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+ __int64 size;
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+ BY_HANDLE_FILE_INFORMATION info;
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+
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+ /* Find initial file size. */
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+ if (! GetFileInformationByHandle(logger->write_handle, &info)) logger->size = 0LL;
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+ else {
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+ ULARGE_INTEGER l;
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+ l.HighPart = info.nFileSizeHigh;
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+ l.LowPart = info.nFileSizeLow;
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+ size = l.QuadPart;
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+ }
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+
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+ char buffer[80];
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+ void *address;
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+ unsigned long in, out;
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+ while (true) {
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+ /* Read data from the pipe. */
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+ address = &buffer;
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+ if (! ReadFile(logger->read_handle, address, sizeof(buffer), &in, 0)) {
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+ log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_READFILE_FAILED, logger->service_name, logger->path, error_string(GetLastError()), 0);
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+ return 2;
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+ }
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+
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+ if (size + (__int64) in >= logger->size) {
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+ /* Look for newline. */
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+ unsigned long i;
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+ for (i = 0; i < in; i++) {
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+ if (buffer[i] == '\n') {
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+ unsigned char unicode = IsTextUnicode(address, sizeof(buffer), 0);
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+ if (unicode) i += sizeof(wchar_t);
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+ else i += sizeof(char);
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+
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+ /* Write up to the newline. */
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+ if (! WriteFile(logger->write_handle, address, i, &out, 0)) {
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+ log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_WRITEFILE_FAILED, logger->service_name, logger->path, error_string(GetLastError()), 0);
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+ return 3;
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+ }
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+
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+ /* Rotate. */
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+ TCHAR rotated[MAX_PATH];
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+ rotated_filename(logger->path, rotated, _countof(rotated), 0);
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+
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+ /*
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+ Ideally we'd try the rename first then close the handle but
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+ MoveFile() will fail if the handle is still open so we must
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+ risk losing everything.
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+ */
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+ CloseHandle(logger->write_handle);
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+ if (! MoveFile(logger->path, rotated)) {
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+ unsigned long error = GetLastError();
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+ if (error != ERROR_FILE_NOT_FOUND) {
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+ log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_ROTATE_FILE_FAILED, logger->service_name, logger->path, _T("MoveFile()"), rotated, error_string(error), 0);
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+ /* We can at least try to re-open the existing file. */
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+ logger->disposition = OPEN_ALWAYS;
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+ }
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+ }
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+
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+ /* Reopen. */
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+ logger->write_handle = append_to_file(logger->path, logger->sharing, 0, logger->disposition, logger->flags);
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+ if (! logger->write_handle) {
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+ log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_CREATEFILE_FAILED, logger->path, error_string(GetLastError()), 0);
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+ /* Oh dear. Now we can't log anything further. */
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+ return 4;
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+ }
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+
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+ /* Unicode files need a new BOM. */
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+ if (unicode) write_bom(logger);
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+
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+ /* Resume writing after the newline. */
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+ size = 0LL;
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+ address = (void *) ((char *) address + i);
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+ in -= i;
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+
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+ break;
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+ }
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+ }
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+ }
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+ else if (! size) {
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+ /* Write a BOM to the new file. */
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+ if (IsTextUnicode(address, sizeof(buffer), 0)) write_bom(logger);
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+ }
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+
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+ /* Write the data. */
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+ if (! WriteFile(logger->write_handle, address, in, &out, 0)) {
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+ log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_WRITEFILE_FAILED, logger->service_name, logger->path, error_string(GetLastError()), 0);
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+ return 3;
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+ }
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+
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+ size += (__int64) out;
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+ }
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+
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+ return 0;
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}
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