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/*
log-server.c
Author: Tatu Ylonen <ylo@cs.hut.fi>
Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
All rights reserved
Created: Mon Mar 20 21:19:30 1995 ylo
Server-side versions of debug(), log(), etc. These normally send the output
to the system log.
*/
#include "includes.h"
RCSID("$Id: log-server.c,v 1.2 1999/11/11 06:57:39 damien Exp $");
#include <syslog.h>
#include "packet.h"
#include "xmalloc.h"
#include "ssh.h"
static LogLevel log_level = SYSLOG_LEVEL_INFO;
static int log_on_stderr = 0;
/* Initialize the log.
av0 program name (should be argv[0])
on_stderr print also on stderr
level logging level
*/
void log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
{
int log_facility;
switch (level)
{
case SYSLOG_LEVEL_QUIET:
case SYSLOG_LEVEL_ERROR:
case SYSLOG_LEVEL_FATAL:
case SYSLOG_LEVEL_INFO:
case SYSLOG_LEVEL_CHAT:
case SYSLOG_LEVEL_DEBUG:
log_level = level;
break;
default:
fprintf(stderr, "Unrecognized internal syslog level code %d\n",
(int)level);
exit(1);
}
switch (facility)
{
case SYSLOG_FACILITY_DAEMON:
log_facility = LOG_DAEMON;
break;
case SYSLOG_FACILITY_USER:
log_facility = LOG_USER;
break;
case SYSLOG_FACILITY_AUTH:
log_facility = LOG_AUTH;
break;
case SYSLOG_FACILITY_LOCAL0:
log_facility = LOG_LOCAL0;
break;
case SYSLOG_FACILITY_LOCAL1:
log_facility = LOG_LOCAL1;
break;
case SYSLOG_FACILITY_LOCAL2:
log_facility = LOG_LOCAL2;
break;
case SYSLOG_FACILITY_LOCAL3:
log_facility = LOG_LOCAL3;
break;
case SYSLOG_FACILITY_LOCAL4:
log_facility = LOG_LOCAL4;
break;
case SYSLOG_FACILITY_LOCAL5:
log_facility = LOG_LOCAL5;
break;
case SYSLOG_FACILITY_LOCAL6:
log_facility = LOG_LOCAL6;
break;
case SYSLOG_FACILITY_LOCAL7:
log_facility = LOG_LOCAL7;
break;
default:
fprintf(stderr, "Unrecognized internal syslog facility code %d\n",
(int)facility);
exit(1);
}
log_on_stderr = on_stderr;
closelog(); /* Close any previous log. */
openlog(av0, LOG_PID, log_facility);
}
#define MSGBUFSIZE 1024
void
do_log(LogLevel level, const char *fmt, va_list args)
{
char msgbuf[MSGBUFSIZE];
char fmtbuf[MSGBUFSIZE];
char *txt = NULL;
int pri = LOG_INFO;
if (level > log_level)
return;
switch (level)
{
case SYSLOG_LEVEL_ERROR:
txt = "error";
pri = LOG_ERR;
break;
case SYSLOG_LEVEL_FATAL:
txt = "fatal";
pri = LOG_ERR;
break;
case SYSLOG_LEVEL_INFO:
pri = LOG_INFO;
break;
case SYSLOG_LEVEL_CHAT:
pri = LOG_INFO;
break;
case SYSLOG_LEVEL_DEBUG:
txt = "debug";
pri = LOG_DEBUG;
break;
default:
txt = "internal error";
pri = LOG_ERR;
break;
}
if (txt != NULL) {
snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
}else{
vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
}
if (log_on_stderr)
fprintf(stderr, "%s\n", msgbuf);
syslog(pri, "%.500s", msgbuf);
}
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