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148 lines
3.1 KiB
C
148 lines
3.1 KiB
C
/*
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*
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* log-server.c
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*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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*
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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* All rights reserved
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*
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* Created: Mon Mar 20 21:19:30 1995 ylo
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*
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* Server-side versions of debug(), log(), etc. These normally send the output
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* to the system log.
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*
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*/
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#include "includes.h"
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RCSID("$Id: log-server.c,v 1.10 2000/05/01 23:56:42 damien Exp $");
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#include <syslog.h>
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#include "packet.h"
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#include "xmalloc.h"
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#include "ssh.h"
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#ifdef HAVE___PROGNAME
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extern char *__progname;
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#else /* HAVE___PROGNAME */
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static const char *__progname = "sshd";
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#endif /* HAVE___PROGNAME */
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static LogLevel log_level = SYSLOG_LEVEL_INFO;
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static int log_on_stderr = 0;
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static int log_facility = LOG_AUTH;
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/* Initialize the log.
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* av0 program name (should be argv[0])
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* on_stderr print also on stderr
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* level logging level
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*/
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void
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log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
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{
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switch (level) {
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case SYSLOG_LEVEL_QUIET:
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case SYSLOG_LEVEL_ERROR:
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case SYSLOG_LEVEL_FATAL:
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case SYSLOG_LEVEL_INFO:
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case SYSLOG_LEVEL_VERBOSE:
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case SYSLOG_LEVEL_DEBUG:
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log_level = level;
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break;
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default:
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fprintf(stderr, "Unrecognized internal syslog level code %d\n",
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(int) level);
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exit(1);
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}
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switch (facility) {
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case SYSLOG_FACILITY_DAEMON:
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log_facility = LOG_DAEMON;
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break;
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case SYSLOG_FACILITY_USER:
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log_facility = LOG_USER;
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break;
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case SYSLOG_FACILITY_AUTH:
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log_facility = LOG_AUTH;
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break;
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case SYSLOG_FACILITY_LOCAL0:
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log_facility = LOG_LOCAL0;
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break;
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case SYSLOG_FACILITY_LOCAL1:
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log_facility = LOG_LOCAL1;
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break;
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case SYSLOG_FACILITY_LOCAL2:
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log_facility = LOG_LOCAL2;
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break;
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case SYSLOG_FACILITY_LOCAL3:
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log_facility = LOG_LOCAL3;
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break;
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case SYSLOG_FACILITY_LOCAL4:
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log_facility = LOG_LOCAL4;
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break;
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case SYSLOG_FACILITY_LOCAL5:
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log_facility = LOG_LOCAL5;
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break;
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case SYSLOG_FACILITY_LOCAL6:
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log_facility = LOG_LOCAL6;
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break;
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case SYSLOG_FACILITY_LOCAL7:
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log_facility = LOG_LOCAL7;
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break;
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default:
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fprintf(stderr, "Unrecognized internal syslog facility code %d\n",
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(int) facility);
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exit(1);
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}
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log_on_stderr = on_stderr;
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}
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#define MSGBUFSIZ 1024
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void
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do_log(LogLevel level, const char *fmt, va_list args)
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{
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char msgbuf[MSGBUFSIZ];
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char fmtbuf[MSGBUFSIZ];
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char *txt = NULL;
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int pri = LOG_INFO;
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if (level > log_level)
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return;
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switch (level) {
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case SYSLOG_LEVEL_ERROR:
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txt = "error";
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pri = LOG_ERR;
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break;
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case SYSLOG_LEVEL_FATAL:
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txt = "fatal";
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pri = LOG_ERR;
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break;
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case SYSLOG_LEVEL_INFO:
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case SYSLOG_LEVEL_VERBOSE:
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pri = LOG_INFO;
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break;
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case SYSLOG_LEVEL_DEBUG:
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txt = "debug";
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pri = LOG_DEBUG;
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break;
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default:
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txt = "internal error";
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pri = LOG_ERR;
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break;
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}
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if (txt != NULL) {
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snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
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vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
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} else {
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vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
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}
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if (log_on_stderr) {
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fprintf(stderr, "%s\n", msgbuf);
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} else {
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openlog(__progname, LOG_PID, log_facility);
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syslog(pri, "%.500s", msgbuf);
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closelog();
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}
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}
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