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/***************************************************************************
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log.c - description
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-------------------
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Copyright : (C) 2004-2025 by Leaflet
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Email : leaflet@leafok.com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#define _POSIX_C_SOURCE 200809L
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#include "log.h"
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#include "io.h"
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#include "common.h"
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#include <stdarg.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/types.h>
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#define STR_LOG_TIME_MAX_LEN 50
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static FILE *fp_common_log;
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static FILE *fp_error_log;
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int log_begin(char *common_log_file, char *error_log_file)
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{
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fp_common_log = fopen(common_log_file, "a");
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if (fp_common_log == NULL)
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{
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perror("log_begin failed\n");
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return -1;
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}
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fp_error_log = fopen(error_log_file, "a");
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if (fp_error_log == NULL)
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{
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perror("log_begin failed\n");
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return -2;
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}
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return 0;
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}
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void log_end()
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{
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fclose(fp_common_log);
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fclose(fp_error_log);
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}
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inline static void log_head(char *buf, size_t len, int log_level, const char *app_file, int app_line)
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{
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time_t t;
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struct tm gm_tm;
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char s_time[STR_LOG_TIME_MAX_LEN + 1];
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time(&t);
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gmtime_r(&t, &gm_tm);
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strftime(s_time, sizeof(s_time), "%Y-%m-%d %H:%M:%S", &gm_tm);
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if (log_level == LOG_LEVEL_COMMON)
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{
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snprintf(buf, len, "[%s] [%d] [INFO] ", s_time, getpid());
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}
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else // if (log_level == LOG_LEVEL_ERROR)
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{
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snprintf(buf, len, "[%s] [%d] [ERROR] [%s:%d] ", s_time, getpid(), app_file, app_line);
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}
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}
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int log_printf(int log_level, const char *app_file, int app_line, const char *format, ...)
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{
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va_list args;
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int retval;
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char buf[LINE_BUFFER_LEN];
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FILE *fp_log;
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fp_log = (log_level == LOG_LEVEL_ERROR ? fp_error_log : fp_common_log);
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log_head(buf, sizeof(buf), log_level, app_file, app_line);
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strncat(buf, format, sizeof(buf) - strnlen(buf, sizeof(buf)));
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va_start(args, format);
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retval = vfprintf(fp_log, buf, args);
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va_end(args);
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fflush(fp_log);
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return retval;
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}
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int log_common_redir(int fd)
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{
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int ret;
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close(fileno(fp_common_log));
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ret = dup2(fd, fileno(fp_common_log));
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return ret;
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}
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int log_error_redir(int fd)
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{
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int ret;
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close(fileno(fp_error_log));
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ret = dup2(fd, fileno(fp_error_log));
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return ret;
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}
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