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/*
* Copyright (c) 2005-2010 Thierry FOURNIER
* $Id: log.c 690 2008-03-31 18:36:43Z $
*
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <time.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef USE_SYSLOG
#include <syslog.h>
#endif
#include "arpalert.h"
#include "log.h"
#include "loadconfig.h"
extern int errno;
FILE *lf = NULL;
const char *mois[12] = {
"Jan",
"Feb",
"Mar",
"Apr",
"May",
"Jun",
"Jul",
"Aug",
"Sep",
"Oct",
"Nov",
"Dec"
};
int syslog_initialized = FALSE;
int file_initialized = FALSE;
// used for compose log
#define LOG_MAX_SIZE 512
char log_msg[LOG_MAX_SIZE];
void initlog(void){
#ifdef USE_SYSLOG
if(config[CF_USESYSLOG].valeur.integer == TRUE){
openlog("arpalert", LOG_CONS, LOG_DAEMON);
syslog_initialized = TRUE;
}
#endif
if(config[CF_LOGFILE].valeur.string != NULL &&
config[CF_LOGFILE].valeur.string[0] != 0){
lf = fopen(config[CF_LOGFILE].valeur.string, "a");
if(lf == NULL){
logmsg(LOG_ERR, "[%s %d] fopen[%d] (%s): %s",
__FILE__, __LINE__,
errno, config[CF_LOGFILE].valeur.string,
strerror(errno));
exit(1);
}
}
file_initialized = TRUE;
}
void logfile_reload(void) {
int ret_code;
// check if logfile is used
if(config[CF_LOGFILE].valeur.string == NULL ||
config[CF_LOGFILE].valeur.string[0] == '\0') {
return;
}
// if opened, close
if (lf != NULL) {
ret_code = fclose(lf);
if (ret_code != 0) {
logmsg(LOG_ERR, "[%s %d] fclose(%s): %s",
__FILE__, __LINE__,
config[CF_LOGFILE].valeur.string,
strerror(errno));
}
}
// open logs
lf = fopen(config[CF_LOGFILE].valeur.string, "a");
if(lf == NULL){
logmsg(LOG_ERR, "[%s %d] fopen[%d] (%s): %s",
__FILE__, __LINE__,
errno, config[CF_LOGFILE].valeur.string,
strerror(errno));
}
}
void logmsg(int priority, const char *fmt, ...){
va_list ap;
struct tm *tm;
// check if I do log this priority
if(priority > config[CF_LOGLEVEL].valeur.integer){
return;
}
//get current time
tm = localtime((time_t *)(¤t_t.tv_sec));
va_start(ap, fmt);
vsnprintf(log_msg, LOG_MAX_SIZE, fmt, ap);
va_end(ap);
#ifdef USE_SYSLOG
if(config[CF_USESYSLOG].valeur.integer == TRUE &&
syslog_initialized == TRUE){
syslog(priority, "%s", log_msg);
}
#endif
if(config[CF_LOGFILE].valeur.string != NULL &&
config[CF_LOGFILE].valeur.string[0] != 0 &&
file_initialized == TRUE){
fprintf(lf, "%s % 2d %02d:%02d:%02d arpalert: %s\n",
mois[tm->tm_mon],
tm->tm_mday,
tm->tm_hour,
tm->tm_min,
tm->tm_sec,
//for year: tm->tm_year+1900,
log_msg);
fflush(lf);
}
if(is_forked == FALSE){
printf("%s % 2d %02d:%02d:%02d arpalert: %s\n",
mois[tm->tm_mon],
tm->tm_mday,
tm->tm_hour,
tm->tm_min,
tm->tm_sec,
log_msg);
}
}
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