/* * Copyright (C) Igor Sysoev */ #include #include static char *ngx_set_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_command_t ngx_errlog_commands[] = { {ngx_string("error_log"), NGX_MAIN_CONF|NGX_CONF_1MORE, ngx_set_error_log, 0, 0, NULL}, ngx_null_command }; static ngx_core_module_t ngx_errlog_module_ctx = { ngx_string("errlog"), NULL, NULL }; ngx_module_t ngx_errlog_module = { NGX_MODULE_V1, &ngx_errlog_module_ctx, /* module context */ ngx_errlog_commands, /* module directives */ NGX_CORE_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static ngx_log_t ngx_log; static ngx_open_file_t ngx_stderr; static const char *err_levels[] = { "stderr", "emerg", "alert", "crit", "error", "warn", "notice", "info", "debug" }; static const char *debug_levels[] = { "debug_core", "debug_alloc", "debug_mutex", "debug_event", "debug_http", "debug_imap" }; #if (NGX_HAVE_VARIADIC_MACROS) void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, const char *fmt, ...) #else void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, const char *fmt, va_list args) #endif { #if (NGX_HAVE_VARIADIC_MACROS) va_list args; #endif u_char errstr[NGX_MAX_ERROR_STR], *p, *last; if (log->file->fd == NGX_INVALID_FILE) { return; } last = errstr + NGX_MAX_ERROR_STR; ngx_memcpy(errstr, ngx_cached_err_log_time.data, ngx_cached_err_log_time.len); p = errstr + ngx_cached_err_log_time.len; p = ngx_snprintf(p, last - p, " [%s] ", err_levels[level]); /* pid#tid */ p = ngx_snprintf(p, last - p, "%P#" NGX_TID_T_FMT ": ", ngx_log_pid, ngx_log_tid); if (log->connection) { p = ngx_snprintf(p, last - p, "*%uA ", log->connection); } #if (NGX_HAVE_VARIADIC_MACROS) va_start(args, fmt); p = ngx_vsnprintf(p, last - p, fmt, args); va_end(args); #else p = ngx_vsnprintf(p, last - p, fmt, args); #endif if (err) { if (p > last - 50) { /* leave a space for an error code */ p = last - 50; *p++ = '.'; *p++ = '.'; *p++ = '.'; } #if (NGX_WIN32) if ((unsigned) err >= 0x80000000) { p = ngx_snprintf(p, last - p, " (%Xd: ", err); } else { p = ngx_snprintf(p, last - p, " (%d: ", err); } #else p = ngx_snprintf(p, last - p, " (%d: ", err); #endif p = ngx_strerror_r(err, p, last - p); if (p < last) { *p++ = ')'; } } if (level != NGX_LOG_DEBUG && log->handler) { p = log->handler(log, p, last - p); } if (p > last - NGX_LINEFEED_SIZE) { p = last - NGX_LINEFEED_SIZE; } ngx_linefeed(p); ngx_write_fd(log->file->fd, errstr, p - errstr); } #if !(NGX_HAVE_VARIADIC_MACROS) void ngx_cdecl ngx_log_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, const char *fmt, ...) { va_list args; if (log->log_level >= level) { va_start(args, fmt); ngx_log_error_core(level, log, err, fmt, args); va_end(args); } } void ngx_cdecl ngx_log_debug_core(ngx_log_t *log, ngx_err_t err, const char *fmt, ...) { va_list args; va_start(args, fmt); ngx_log_error_core(NGX_LOG_DEBUG, log, err, fmt, args); va_end(args); } #endif void ngx_log_abort(ngx_err_t err, const char *text) { ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, err, text); } ngx_log_t * ngx_log_init(void) { ngx_log.file = &ngx_stderr; ngx_log.log_level = NGX_LOG_NOTICE; #if (NGX_WIN32) ngx_stderr_fileno = GetStdHandle(STD_ERROR_HANDLE); ngx_stderr.fd = ngx_open_file(NGX_ERROR_LOG_PATH, NGX_FILE_RDWR, NGX_FILE_CREATE_OR_OPEN|NGX_FILE_APPEND, 0); if (ngx_stderr.fd == NGX_INVALID_FILE) { ngx_message_box("nginx", MB_OK, ngx_errno, "Could not open error log file: " ngx_open_file_n " \"" NGX_ERROR_LOG_PATH "\" failed"); return NULL; } if (ngx_file_append_mode(ngx_stderr.fd) == NGX_ERROR) { ngx_message_box("nginx", MB_OK, ngx_errno, "Could not open error log file: " ngx_file_append_mode_n " \"" NGX_ERROR_LOG_PATH "\" failed"); return NULL; } #else ngx_stderr.fd = STDERR_FILENO; #endif return &ngx_log; } ngx_log_t * ngx_log_create_errlog(ngx_cycle_t *cycle, ngx_array_t *args) { ngx_log_t *log; ngx_str_t *value, *name; if (args) { value = args->elts; name = &value[1]; } else { name = NULL; } log = ngx_pcalloc(cycle->pool, sizeof(ngx_log_t)); if (log == NULL) { return NULL; } log->file = ngx_conf_open_file(cycle, name); if (log->file == NULL) { return NULL; } return log; } char * ngx_set_error_log_levels(ngx_conf_t *cf, ngx_log_t *log) { ngx_uint_t i, n, d; ngx_str_t *value; value = cf->args->elts; for (i = 2; i < cf->args->nelts; i++) { for (n = 1; n <= NGX_LOG_DEBUG; n++) { if (ngx_strcmp(value[i].data, err_levels[n]) == 0) { if (log->log_level != 0) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "duplicate log level \"%s\"", value[i].data); return NGX_CONF_ERROR; } log->log_level = n; continue; } } for (n = 0, d = NGX_LOG_DEBUG_FIRST; d <= NGX_LOG_DEBUG_LAST; d <<= 1) { if (ngx_strcmp(value[i].data, debug_levels[n++]) == 0) { if (log->log_level & ~NGX_LOG_DEBUG_ALL) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid log level \"%s\"", value[i].data); return NGX_CONF_ERROR; } log->log_level |= d; } } if (log->log_level == 0) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid log level \"%s\"", value[i].data); return NGX_CONF_ERROR; } } if (log->log_level == NGX_LOG_DEBUG) { log->log_level = NGX_LOG_DEBUG_ALL; } return NGX_CONF_OK; } static char * ngx_set_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_str_t *value; value = cf->args->elts; if (value[1].len == 6 && ngx_strcmp(value[1].data, "stderr") == 0) { cf->cycle->new_log->file->fd = ngx_stderr.fd; cf->cycle->new_log->file->name.len = 0; cf->cycle->new_log->file->name.data = NULL; } else { cf->cycle->new_log->file->name = value[1]; if (ngx_conf_full_name(cf->cycle, &cf->cycle->new_log->file->name) == NGX_ERROR) { return NGX_CONF_ERROR; } } return ngx_set_error_log_levels(cf, cf->cycle->new_log); }