98 lines
2.4 KiB
C
98 lines
2.4 KiB
C
#include "log.h"
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#include <assert.h>
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#include <stdarg.h>
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#include <time.h>
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#include <openssl/err.h>
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static const char* LOG_LEVEL_STRING_TABLE[] = {
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"ERROR",
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"WARN",
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"INFO",
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"DEBUG",
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"TRACE"
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};
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// Maybe add __attribute__((constructor)) in the future if available to skip _config_initialized
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static bool _user_default_config_initialized = false;
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static struct log_config_s _user_default_config;
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static inline struct log_config_s _default_config() {
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if (_user_default_config_initialized) {
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return _user_default_config;
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}
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return (struct log_config_s) {
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.loc_error = stderr,
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.loc_warn = stderr,
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.loc_info = stdout,
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.loc_debug = NULL,
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.loc_trace = NULL,
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.timestamp = true,
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};
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}
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void log_set_default_config(struct log_config_s config) {
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_user_default_config = config;
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_user_default_config_initialized = true;
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}
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struct logger_s log_new(const char* module_name) {
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return (struct logger_s) {
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.module_name = module_name,
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.config = _default_config(),
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};
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}
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void log_log(const struct logger_s* logger, enum LOG_LEVEL log_level, const char* fmt, ...) {
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assert(logger != NULL);
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FILE* dest = NULL;
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switch (log_level) {
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case LOG_ERR: dest = logger->config.loc_error; break;
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case LOG_WARN: dest = logger->config.loc_warn; break;
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case LOG_INFO: dest = logger->config.loc_info; break;
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case LOG_DEBUG: dest = logger->config.loc_debug; break;
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case LOG_TRACE: dest = logger->config.loc_trace; break;
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default: break;
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}
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if (dest == NULL) {
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return;
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}
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va_list varargs;
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va_start(varargs, fmt);
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if (logger->config.timestamp) {
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struct timespec utc_time;
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struct tm local_time;
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char time_str_buf[10+1+8+1];
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timespec_get(&utc_time, TIME_UTC);
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localtime_r(&(utc_time.tv_sec), &local_time);
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if(strftime(time_str_buf, sizeof(time_str_buf), "%F %T", &local_time)) {
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fprintf(dest, "[%s.%9lu] ", time_str_buf, utc_time.tv_nsec);
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}
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}
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fprintf(dest, "[%s] %s: ", LOG_LEVEL_STRING_TABLE[log_level], logger->module_name);
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vfprintf(dest, fmt, varargs);
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fprintf(dest, "\n");
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}
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void log_log_ssl_err(const struct logger_s* logger, enum LOG_LEVEL log_level, unsigned long error, const char* message_fmt, ...) {
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char error_buf[256];
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ERR_error_string_n(ERR_get_error(), error_buf, sizeof(error_buf));
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va_list varargs;
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va_start(varargs, message_fmt);
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log_log(logger, log_level, message_fmt, varargs);
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log_log(logger, log_level, "%s", error_buf);
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}
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