104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
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/***************************************************************************
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* Copyright (C) 06/2006 by Olaf Rempel *
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* razzor@kopf-tisch.de *
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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 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <string.h>
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#include "logging.h"
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#define BUFSIZE 8192
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static FILE *log_fd = NULL;
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static char *buffer = NULL;
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void log_print(int prio, const char *fmt, ...)
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{
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va_list az;
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int len;
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if (buffer == NULL) {
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buffer = malloc(BUFSIZE);
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if (buffer == NULL) {
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fprintf(stderr, "log_print: out of memory\nBailing out!\n");
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exit(-1);
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}
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}
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va_start(az, fmt);
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len = vsnprintf(buffer, BUFSIZE, fmt, az);
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va_end(az);
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if (len < 0 || len >= BUFSIZE) {
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log_print(LOG_ERROR, "log_print: arguments too long");
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errno = 0;
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return;
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}
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if (errno) {
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strncpy(buffer + len, ": ", BUFSIZE - len);
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len += 2;
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strncpy(buffer + len, strerror(errno), BUFSIZE - len);
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}
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if (log_fd) {
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char tbuf[64];
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time_t tzgr;
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time(&tzgr);
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strftime(tbuf, sizeof(tbuf), "%b %d %H:%M:%S :", localtime(&tzgr));
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fprintf(log_fd, "%s %s\n", tbuf, buffer);
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fflush(log_fd);
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} else {
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fprintf(stderr, "%s\n", buffer);
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}
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errno = 0;
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}
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static void log_close(void)
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{
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if (buffer)
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free(buffer);
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fclose(log_fd);
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}
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int log_init(char *logfile)
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{
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log_fd = fopen(logfile, "a");
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if (log_fd == NULL) {
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log_print(LOG_ERROR, "log_open('%s'): %s", logfile);
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return 0;
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}
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if (atexit(log_close) != 0) {
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log_print(LOG_ERROR, "log_open(): atexit()");
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return 0;
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}
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log_print(LOG_EVERYTIME, "==========================");
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return 1;
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}
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