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/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
* Server-side versions of debug(), log(), etc. These normally send the output
* to the system log.
*
* As far as I am concerned, the code I have written for this software
* can be used freely for any purpose. Any derived versions of this
* software must be clearly marked as such, and if the derived work is
* incompatible with the protocol description in the RFC file, it must be
* called by a name other than "ssh" or "Secure Shell".
*
*
* Copyright (c) 2000 Markus Friedl. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "includes.h"
RCSID("$OpenBSD: log-server.c,v 1.17 2000/09/12 20:53:10 markus 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;
static int log_facility = LOG_AUTH;
/* 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)
{
switch (level) {
case SYSLOG_LEVEL_QUIET:
case SYSLOG_LEVEL_ERROR:
case SYSLOG_LEVEL_FATAL:
case SYSLOG_LEVEL_INFO:
case SYSLOG_LEVEL_VERBOSE:
case SYSLOG_LEVEL_DEBUG1:
case SYSLOG_LEVEL_DEBUG2:
case SYSLOG_LEVEL_DEBUG3:
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;
}
#define MSGBUFSIZ 1024
void
do_log(LogLevel level, const char *fmt, va_list args)
{
char msgbuf[MSGBUFSIZ];
char fmtbuf[MSGBUFSIZ];
char *txt = NULL;
int pri = LOG_INFO;
extern char *__progname;
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:
case SYSLOG_LEVEL_VERBOSE:
pri = LOG_INFO;
break;
case SYSLOG_LEVEL_DEBUG1:
txt = "debug1";
pri = LOG_DEBUG;
break;
case SYSLOG_LEVEL_DEBUG2:
txt = "debug2";
pri = LOG_DEBUG;
break;
case SYSLOG_LEVEL_DEBUG3:
txt = "debug3";
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);
} else {
openlog(__progname, LOG_PID, log_facility);
syslog(pri, "%.500s", msgbuf);
closelog();
}
}
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