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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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#include "io.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include <sys/types.h>
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#include <time.h>
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#include <unistd.h>
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FILE *fp_log_std;
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FILE *fp_log_err;
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int log_begin(char *file_log_std, char *file_log_err)
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{
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fp_log_std = fopen(file_log_std, "a");
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if (fp_log_std == 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_log_err = fopen(file_log_err, "a");
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if (fp_log_err == 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_log_std);
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fclose(fp_log_err);
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}
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int log_head(char *buf, size_t len)
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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[256];
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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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snprintf(buf, len, "[%s] [%d] ", s_time, getpid());
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return 0;
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}
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int log_std(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[1024];
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log_head(buf, sizeof(buf));
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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_std, buf, args);
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va_end(args);
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fflush(fp_log_std);
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return retval;
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}
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int log_error(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[1024];
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log_head(buf, sizeof(buf));
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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_err, buf, args);
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va_end(args);
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fflush(fp_log_err);
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return retval;
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}
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int log_std_redirect(int fd)
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{
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int ret;
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close(fileno(fp_log_std));
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ret = dup2(fd, fileno(fp_log_std));
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return ret;
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}
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int log_err_redirect(int fd)
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{
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int ret;
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close(fileno(fp_log_err));
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ret = dup2(fd, fileno(fp_log_err));
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return ret;
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}
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