[openssh.git] / log-server.c

/*
 * 
 * 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("$Id$");

#include <syslog.h>
#include "packet.h"
#include "xmalloc.h"
#include "ssh.h"

#ifdef HAVE___PROGNAME
extern char *__progname;
#else /* HAVE___PROGNAME */
const char *__progname = "sshd";
#endif /* HAVE___PROGNAME */

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_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;
}

#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;

	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_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);
	} else {
		openlog(__progname, LOG_PID, log_facility);
		syslog(pri, "%.500s", msgbuf);
		closelog();
	}
}
Commit	Line	Data
8efc0c15	1	/*
5260325f	2	*
	3	* log-server.c
	4	*
	5	* Author: Tatu Ylonen <ylo@cs.hut.fi>
	6	*
	7	* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
	8	* All rights reserved
	9	*
	10	* Created: Mon Mar 20 21:19:30 1995 ylo
	11	*
	12	* Server-side versions of debug(), log(), etc. These normally send the output
	13	* to the system log.
	14	*
	15	*/
8efc0c15	16
	17	#include "includes.h"
	18	RCSID("$Id$");
	19
	20	#include <syslog.h>
	21	#include "packet.h"
	22	#include "xmalloc.h"
	23	#include "ssh.h"
	24
f601d847	25	#ifdef HAVE___PROGNAME
	26	extern char *__progname;
	27	#else /* HAVE___PROGNAME */
	28	const char *__progname = "sshd";
	29	#endif /* HAVE___PROGNAME */
	30
6a17f9c2	31	static LogLevel log_level = SYSLOG_LEVEL_INFO;
8efc0c15	32	static int log_on_stderr = 0;
e7c0f9d5	33	static int log_facility = LOG_AUTH;
8efc0c15	34
8efc0c15	35	/* Initialize the log.
5260325f	36	* av0 program name (should be argv[0])
	37	* on_stderr print also on stderr
	38	* level logging level
	39	*/
8efc0c15	40
5260325f	41	void
5260325f	42	log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
8efc0c15	43	{
5260325f	44	switch (level) {
	45	case SYSLOG_LEVEL_QUIET:
	46	case SYSLOG_LEVEL_ERROR:
	47	case SYSLOG_LEVEL_FATAL:
	48	case SYSLOG_LEVEL_INFO:
	49	case SYSLOG_LEVEL_VERBOSE:
	50	case SYSLOG_LEVEL_DEBUG:
	51	log_level = level;
	52	break;
	53	default:
	54	fprintf(stderr, "Unrecognized internal syslog level code %d\n",
	55	(int) level);
	56	exit(1);
	57	}
	58	switch (facility) {
	59	case SYSLOG_FACILITY_DAEMON:
	60	log_facility = LOG_DAEMON;
	61	break;
	62	case SYSLOG_FACILITY_USER:
	63	log_facility = LOG_USER;
	64	break;
	65	case SYSLOG_FACILITY_AUTH:
	66	log_facility = LOG_AUTH;
	67	break;
	68	case SYSLOG_FACILITY_LOCAL0:
	69	log_facility = LOG_LOCAL0;
	70	break;
	71	case SYSLOG_FACILITY_LOCAL1:
	72	log_facility = LOG_LOCAL1;
	73	break;
	74	case SYSLOG_FACILITY_LOCAL2:
	75	log_facility = LOG_LOCAL2;
	76	break;
	77	case SYSLOG_FACILITY_LOCAL3:
	78	log_facility = LOG_LOCAL3;
	79	break;
	80	case SYSLOG_FACILITY_LOCAL4:
	81	log_facility = LOG_LOCAL4;
	82	break;
	83	case SYSLOG_FACILITY_LOCAL5:
	84	log_facility = LOG_LOCAL5;
	85	break;
	86	case SYSLOG_FACILITY_LOCAL6:
	87	log_facility = LOG_LOCAL6;
	88	break;
	89	case SYSLOG_FACILITY_LOCAL7:
	90	log_facility = LOG_LOCAL7;
	91	break;
	92	default:
	93	fprintf(stderr, "Unrecognized internal syslog facility code %d\n",
	94	(int) facility);
	95	exit(1);
	96	}
	97	log_on_stderr = on_stderr;
8efc0c15	98	}
8efc0c15	99
c8d54615	100	#define MSGBUFSIZ 1024
8efc0c15	101
6a17f9c2	102	void
6a17f9c2	103	do_log(LogLevel level, const char *fmt, va_list args)
8efc0c15	104	{
c8d54615	105	char msgbuf[MSGBUFSIZ];
c8d54615	106	char fmtbuf[MSGBUFSIZ];
5260325f	107	char *txt = NULL;
	108	int pri = LOG_INFO;
	109
	110	if (level > log_level)
	111	return;
	112	switch (level) {
	113	case SYSLOG_LEVEL_ERROR:
	114	txt = "error";
	115	pri = LOG_ERR;
	116	break;
	117	case SYSLOG_LEVEL_FATAL:
	118	txt = "fatal";
	119	pri = LOG_ERR;
	120	break;
	121	case SYSLOG_LEVEL_INFO:
	122	case SYSLOG_LEVEL_VERBOSE:
	123	pri = LOG_INFO;
	124	break;
	125	case SYSLOG_LEVEL_DEBUG:
	126	txt = "debug";
	127	pri = LOG_DEBUG;
	128	break;
	129	default:
	130	txt = "internal error";
	131	pri = LOG_ERR;
	132	break;
	133	}
	134	if (txt != NULL) {
	135	snprintf(fmtbuf, sizeof(fmtbuf), "%s: %s", txt, fmt);
	136	vsnprintf(msgbuf, sizeof(msgbuf), fmtbuf, args);
	137	} else {
	138	vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
	139	}
7368a6c8	140	if (log_on_stderr) {
5260325f	141	fprintf(stderr, "%s\n", msgbuf);
7368a6c8	142	} else {
	143	openlog(__progname, LOG_PID, log_facility);
	144	syslog(pri, "%.500s", msgbuf);
	145	closelog();
	146	}
8efc0c15	147	}