1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24*7c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*7c478bd9Sstevel@tonic-gate 
29*7c478bd9Sstevel@tonic-gate /*
30*7c478bd9Sstevel@tonic-gate  * daytime inetd service - both stream and dgram based.
31*7c478bd9Sstevel@tonic-gate  * Return human-readable time of day.
32*7c478bd9Sstevel@tonic-gate  */
33*7c478bd9Sstevel@tonic-gate 
34*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
35*7c478bd9Sstevel@tonic-gate #include <sys/socket.h>
36*7c478bd9Sstevel@tonic-gate #include <unistd.h>
37*7c478bd9Sstevel@tonic-gate #include <stdio.h>
38*7c478bd9Sstevel@tonic-gate #include <strings.h>
39*7c478bd9Sstevel@tonic-gate #include <netinet/in.h>
40*7c478bd9Sstevel@tonic-gate #include <inetsvc.h>
41*7c478bd9Sstevel@tonic-gate 
42*7c478bd9Sstevel@tonic-gate 
43*7c478bd9Sstevel@tonic-gate #define	TIMEBUF_SIZE	26
44*7c478bd9Sstevel@tonic-gate 
45*7c478bd9Sstevel@tonic-gate 
46*7c478bd9Sstevel@tonic-gate static const char *
daytime(void)47*7c478bd9Sstevel@tonic-gate daytime(void)
48*7c478bd9Sstevel@tonic-gate {
49*7c478bd9Sstevel@tonic-gate 	time_t		clock;
50*7c478bd9Sstevel@tonic-gate 	static char	buf[TIMEBUF_SIZE];
51*7c478bd9Sstevel@tonic-gate 
52*7c478bd9Sstevel@tonic-gate 	clock = time(NULL);
53*7c478bd9Sstevel@tonic-gate 	(void) strlcpy(buf, ctime(&clock), sizeof (buf));
54*7c478bd9Sstevel@tonic-gate 	/*
55*7c478bd9Sstevel@tonic-gate 	 * Format of ctime is "Fri Sep 13 00:00:00 1986\n\0". To conform to the
56*7c478bd9Sstevel@tonic-gate 	 * required format as specified in RFCs 867 and 854 we replace the
57*7c478bd9Sstevel@tonic-gate 	 * "\n\0" with "\r\n".
58*7c478bd9Sstevel@tonic-gate 	 */
59*7c478bd9Sstevel@tonic-gate 	buf[TIMEBUF_SIZE - 2] = '\r';
60*7c478bd9Sstevel@tonic-gate 	buf[TIMEBUF_SIZE - 1] = '\n';
61*7c478bd9Sstevel@tonic-gate 
62*7c478bd9Sstevel@tonic-gate 	return (buf);
63*7c478bd9Sstevel@tonic-gate }
64*7c478bd9Sstevel@tonic-gate 
65*7c478bd9Sstevel@tonic-gate /* ARGSUSED3 */
66*7c478bd9Sstevel@tonic-gate static void
daytime_dg(int s,const struct sockaddr * sap,int sa_size,const void * buf,size_t sz)67*7c478bd9Sstevel@tonic-gate daytime_dg(int s, const struct sockaddr *sap, int sa_size, const void *buf,
68*7c478bd9Sstevel@tonic-gate     size_t sz)
69*7c478bd9Sstevel@tonic-gate {
70*7c478bd9Sstevel@tonic-gate 	(void) safe_sendto(s, daytime(), TIMEBUF_SIZE, 0, sap, sa_size);
71*7c478bd9Sstevel@tonic-gate }
72*7c478bd9Sstevel@tonic-gate 
73*7c478bd9Sstevel@tonic-gate int
main(int argc,char * argv[])74*7c478bd9Sstevel@tonic-gate main(int argc, char *argv[])
75*7c478bd9Sstevel@tonic-gate {
76*7c478bd9Sstevel@tonic-gate 	opterr = 0;	/* disable getopt error msgs */
77*7c478bd9Sstevel@tonic-gate 	switch (getopt(argc, argv, "ds")) {
78*7c478bd9Sstevel@tonic-gate 	case 'd':
79*7c478bd9Sstevel@tonic-gate 		dg_template(daytime_dg, STDIN_FILENO, NULL, 0);
80*7c478bd9Sstevel@tonic-gate 		break;
81*7c478bd9Sstevel@tonic-gate 	case 's':
82*7c478bd9Sstevel@tonic-gate 		(void) safe_write(STDIN_FILENO, daytime(), TIMEBUF_SIZE);
83*7c478bd9Sstevel@tonic-gate 		break;
84*7c478bd9Sstevel@tonic-gate 	default:
85*7c478bd9Sstevel@tonic-gate 		return (1);
86*7c478bd9Sstevel@tonic-gate 	}
87*7c478bd9Sstevel@tonic-gate 
88*7c478bd9Sstevel@tonic-gate 	return (0);
89*7c478bd9Sstevel@tonic-gate }
90