1/*-
2 * Copyright (c) 2009 Ed Schouten <ed@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
30#include <sys/param.h>
31#include <sys/time.h>
32#include <paths.h>
33#include <sha.h>
34#include <string.h>
35#include <unistd.h>
36#include <utmpx.h>
37#include "ulog.h"
38
39static void
40ulog_fill(struct utmpx *utx, const char *line)
41{
42	SHA_CTX c;
43	char id[SHA_DIGEST_LENGTH];
44
45	/* Remove /dev/ component. */
46	if (strncmp(line, _PATH_DEV, sizeof _PATH_DEV - 1) == 0)
47		line += sizeof _PATH_DEV - 1;
48
49	memset(utx, 0, sizeof *utx);
50
51	utx->ut_pid = getpid();
52	gettimeofday(&utx->ut_tv, NULL);
53	strncpy(utx->ut_line, line, sizeof utx->ut_line);
54
55	SHA1_Init(&c);
56	SHA1_Update(&c, "libulog", 7);
57	SHA1_Update(&c, utx->ut_line, sizeof utx->ut_line);
58	SHA1_Final(id, &c);
59
60	memcpy(utx->ut_id, id, MIN(sizeof utx->ut_id, sizeof id));
61}
62
63void
64ulog_login(const char *line, const char *user, const char *host)
65{
66	struct utmpx utx;
67
68	ulog_fill(&utx, line);
69	utx.ut_type = USER_PROCESS;
70	strncpy(utx.ut_user, user, sizeof utx.ut_user);
71	if (host != NULL)
72		strncpy(utx.ut_host, host, sizeof utx.ut_host);
73	pututxline(&utx);
74}
75
76void
77ulog_logout(const char *line)
78{
79	struct utmpx utx;
80
81	ulog_fill(&utx, line);
82	utx.ut_type = DEAD_PROCESS;
83	pututxline(&utx);
84}
85