mirror of
https://github.com/nginx/nginx.git
synced 2024-12-16 22:47:47 +08:00
388 lines
8.5 KiB
C
388 lines
8.5 KiB
C
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#include <ngx_config.h>
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#include <ngx_core.h>
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static void ngx_log_write(ngx_log_t *log, char *errstr, size_t len);
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static char *ngx_set_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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static ngx_command_t ngx_errlog_commands[] = {
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{ngx_string("error_log"),
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NGX_MAIN_CONF|NGX_CONF_1MORE,
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ngx_set_error_log,
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0,
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0,
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NULL},
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ngx_null_command
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};
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static ngx_core_module_t ngx_errlog_module_ctx = {
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ngx_string("errlog"),
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NULL,
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NULL
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};
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ngx_module_t ngx_errlog_module = {
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NGX_MODULE,
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&ngx_errlog_module_ctx, /* module context */
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ngx_errlog_commands, /* module directives */
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NGX_CORE_MODULE, /* module type */
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NULL, /* init module */
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NULL /* init child */
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};
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static ngx_log_t ngx_log;
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static ngx_open_file_t ngx_stderr;
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static const char *err_levels[] = {
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"stderr", "emerg", "alert", "crit", "error",
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"warn", "notice", "info", "debug"
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};
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static const char *debug_levels[] = {
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"debug_core", "debug_alloc", "debug_mutex", "debug_event",
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"debug_http", "debug_imap"
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};
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#if (HAVE_VARIADIC_MACROS)
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void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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const char *fmt, ...)
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#else
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void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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const char *fmt, va_list args)
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#endif
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{
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char errstr[MAX_ERROR_STR];
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size_t len, max;
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#if (HAVE_VARIADIC_MACROS)
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va_list args;
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#endif
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if (log->file->fd == NGX_INVALID_FILE) {
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return;
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}
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ngx_memcpy(errstr, ngx_cached_err_log_time.data,
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ngx_cached_err_log_time.len);
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#if (WIN32)
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max = MAX_ERROR_STR - 2;
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#else
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max = MAX_ERROR_STR - 1;
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#endif
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len = ngx_cached_err_log_time.len;
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len += ngx_snprintf(errstr + len, max - len, " [%s] ", err_levels[level]);
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/* pid#tid */
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len += ngx_snprintf(errstr + len, max - len,
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PID_T_FMT "#" TID_T_FMT ": ", ngx_log_pid, ngx_log_tid);
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if (log->data && *(int *) log->data != -1) {
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len += ngx_snprintf(errstr + len, max - len,
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"*%u ", *(u_int *) log->data);
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}
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#if (HAVE_VARIADIC_MACROS)
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va_start(args, fmt);
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len += ngx_vsnprintf(errstr + len, max - len, fmt, args);
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va_end(args);
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#else
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len += ngx_vsnprintf(errstr + len, max - len, fmt, args);
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#endif
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if (err) {
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if (len > max - 50) {
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/* leave a space for an error code */
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len = max - 50;
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errstr[len++] = '.';
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errstr[len++] = '.';
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errstr[len++] = '.';
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}
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#if (WIN32)
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if ((unsigned) err >= 0x80000000) {
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len += ngx_snprintf(errstr + len, max - len, " (%X: ", err);
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} else {
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len += ngx_snprintf(errstr + len, max - len, " (%d: ", err);
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}
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#else
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len += ngx_snprintf(errstr + len, max - len, " (%d: ", err);
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#endif
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if (len >= max) {
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ngx_log_write(log, errstr, max);
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return;
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}
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len += ngx_strerror_r(err, errstr + len, max - len);
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if (len >= max) {
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ngx_log_write(log, errstr, max);
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return;
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}
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errstr[len++] = ')';
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if (len >= max) {
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ngx_log_write(log, errstr, max);
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return;
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}
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} else {
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if (len >= max) {
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ngx_log_write(log, errstr, max);
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return;
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}
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}
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if (level != NGX_LOG_DEBUG && log->handler) {
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len += log->handler(log->data, errstr + len, max - len);
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if (len >= max) {
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len = max;
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}
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}
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ngx_log_write(log, errstr, len);
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}
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static void ngx_log_write(ngx_log_t *log, char *errstr, size_t len)
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{
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#if (WIN32)
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u_long written;
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errstr[len++] = CR;
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errstr[len++] = LF;
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WriteFile(log->file->fd, errstr, len, &written, NULL);
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#else
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errstr[len++] = LF;
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write(log->file->fd, errstr, len);
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#endif
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}
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#if !(HAVE_VARIADIC_MACROS)
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void ngx_log_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
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const char *fmt, ...)
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{
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va_list args;
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if (log->log_level >= level) {
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va_start(args, fmt);
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ngx_log_error_core(level, log, err, fmt, args);
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va_end(args);
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}
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}
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void ngx_log_debug_core(ngx_log_t *log, ngx_err_t err, const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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ngx_log_error_core(NGX_LOG_DEBUG, log, err, fmt, args);
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va_end(args);
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}
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void ngx_assert_core(ngx_log_t *log, const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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ngx_log_error_core(NGX_LOG_ALERT, log, 0, fmt, args);
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va_end(args);
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}
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#endif
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#if 0
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void ngx_log_stderr(ngx_event_t *ev)
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{
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char errstr[MAX_ERROR_STR];
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ssize_t n;
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ngx_err_t err;
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for ( ;; ) {
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n = read((ngx_fd_t) ev->data, errstr, sizeof(errstr - 1));
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if (n == -1) {
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err = ngx_errno;
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if (err == NGX_EAGAIN) {
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return;
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}
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ngx_log_error(NGX_LOG_ALERT, &ngx_log, err, "read() failed");
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return;
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}
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if (n == 0) {
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ngx_log_error(NGX_LOG_ALERT, &ngx_log, 0, "stderr clolsed");
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return;
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}
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errstr[n] = '\0';
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ngx_log_error(NGX_LOG_STDERR, &ngx_log, 0, "%s", errstr);
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}
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}
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#endif
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ngx_log_t *ngx_log_init_errlog()
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{
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#if (WIN32)
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ngx_stderr.fd = GetStdHandle(STD_ERROR_HANDLE);
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if (ngx_stderr.fd == NGX_INVALID_FILE) {
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/* TODO: where can we log error ? */
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return NULL;
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} else if (ngx_stderr.fd == NULL) {
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/* there are no associated standard handles */
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/* TODO: where can we can log possible errors ? */
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ngx_stderr.fd = NGX_INVALID_FILE;
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}
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#else
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ngx_stderr.fd = STDERR_FILENO;
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#endif
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ngx_log.file = &ngx_stderr;
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ngx_log.log_level = NGX_LOG_INFO;
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return &ngx_log;
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}
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ngx_log_t *ngx_log_create_errlog(ngx_cycle_t *cycle, ngx_array_t *args)
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{
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ngx_log_t *log;
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ngx_str_t *value, *name;
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if (args) {
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value = args->elts;
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name = &value[1];
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} else {
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name = NULL;
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}
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if (!(log = ngx_pcalloc(cycle->pool, sizeof(ngx_log_t)))) {
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return NULL;
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}
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if (!(log->file = ngx_conf_open_file(cycle, name))) {
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return NULL;
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}
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return log;
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}
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char *ngx_set_error_log_levels(ngx_conf_t *cf, ngx_log_t *log)
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{
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ngx_uint_t i, n, d;
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ngx_str_t *value;
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value = cf->args->elts;
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for (i = 2; i < cf->args->nelts; i++) {
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for (n = 1; n <= NGX_LOG_DEBUG; n++) {
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if (ngx_strcmp(value[i].data, err_levels[n]) == 0) {
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if (log->log_level != 0) {
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ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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"invalid log level \"%s\"",
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value[i].data);
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return NGX_CONF_ERROR;
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}
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log->log_level = n;
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continue;
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}
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}
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for (n = 0, d = NGX_LOG_DEBUG_FIRST; d <= NGX_LOG_DEBUG_LAST; d <<= 1) {
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if (ngx_strcmp(value[i].data, debug_levels[n++]) == 0) {
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if (log->log_level & ~NGX_LOG_DEBUG_ALL) {
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ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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"invalid log level \"%s\"",
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value[i].data);
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return NGX_CONF_ERROR;
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}
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log->log_level |= d;
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}
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}
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if (log->log_level == 0) {
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ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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"invalid log level \"%s\"", value[i].data);
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return NGX_CONF_ERROR;
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}
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}
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if (log->log_level == NGX_LOG_DEBUG) {
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log->log_level = NGX_LOG_DEBUG_ALL;
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}
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return NGX_CONF_OK;
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}
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static char *ngx_set_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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{
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ngx_str_t *value;
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value = cf->args->elts;
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if (value[1].len == 6 && ngx_strcmp(value[1].data, "stderr") == 0) {
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cf->cycle->new_log->file->fd = ngx_stderr.fd;
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cf->cycle->new_log->file->name.len = 0;
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cf->cycle->new_log->file->name.data = NULL;
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} else {
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cf->cycle->new_log->file->name = value[1];
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if (ngx_conf_full_name(cf->cycle, &cf->cycle->new_log->file->name)
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== NGX_ERROR)
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{
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return NGX_CONF_ERROR;
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}
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}
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return ngx_set_error_log_levels(cf, cf->cycle->new_log);
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}
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