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 */
50 static uint32_t
machtime(void)51 machtime(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
62 static void
machtime_stream(int s)63 machtime_stream(int s)
64 {
65 uint32_t result = machtime();
66
67 (void) safe_write(s, &result, sizeof (result));
68 }
69
70 /* ARGSUSED3 */
71 static void
machtime_dg(int s,const struct sockaddr * sap,int sa_len,const void * buf,size_t sz)72 machtime_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
80 int
main(int argc,char * argv[])81 main(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