1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29/*
30 * time inetd service - both stream and dgram based.
31 */
32
33#include <sys/types.h>
34#include <sys/socket.h>
35#include <unistd.h>
36#include <stdio.h>
37#include <netinet/in.h>
38#include <sys/time.h>
39#include <syslog.h>
40#include <inetsvc.h>
41
42
43/*
44 * Return a machine readable date and time, in the form of the
45 * number of seconds since midnight, Jan 1, 1900.  Since gettimeofday
46 * returns the number of seconds since midnight, Jan 1, 1970,
47 * we must add 2208988800 seconds to this figure to make up for
48 * some seventy years Bell Labs was asleep.
49 */
50static uint32_t
51machtime(void)
52{
53	struct timeval tv;
54
55	if (gettimeofday(&tv, NULL) < 0) {
56		syslog(LOG_INFO, "Unable to get time of day");
57		return (0);
58	}
59	return ((uint32_t)htonl(tv.tv_sec + 2208988800U));
60}
61
62static void
63machtime_stream(int s)
64{
65	uint32_t result = machtime();
66
67	(void) safe_write(s, &result, sizeof (result));
68}
69
70/* ARGSUSED3 */
71static void
72machtime_dg(int s, const struct sockaddr *sap, int sa_len, const void *buf,
73    size_t sz)
74{
75	uint32_t result = machtime();
76
77	(void) safe_sendto(s, &result, sizeof (result), 0, sap, sa_len);
78}
79
80int
81main(int argc, char *argv[])
82{
83	opterr = 0;	/* disable getopt error msgs */
84	switch (getopt(argc, argv, "ds")) {
85	case 'd':
86		dg_template(machtime_dg, STDIN_FILENO, NULL, 0);
87		break;
88	case 's':
89		machtime_stream(STDIN_FILENO);
90		break;
91	default:
92		return (1);
93	}
94
95	return (0);
96}
97