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 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28*7c478bd9Sstevel@tonic-gate /* All Rights Reserved */
29*7c478bd9Sstevel@tonic-gate
30*7c478bd9Sstevel@tonic-gate /*
31*7c478bd9Sstevel@tonic-gate * University Copyright- Copyright (c) 1982, 1986, 1988
32*7c478bd9Sstevel@tonic-gate * The Regents of the University of California
33*7c478bd9Sstevel@tonic-gate * All Rights Reserved
34*7c478bd9Sstevel@tonic-gate *
35*7c478bd9Sstevel@tonic-gate * University Acknowledgment- Portions of this document are derived from
36*7c478bd9Sstevel@tonic-gate * software developed by the University of California, Berkeley, and its
37*7c478bd9Sstevel@tonic-gate * contributors.
38*7c478bd9Sstevel@tonic-gate */
39*7c478bd9Sstevel@tonic-gate
40*7c478bd9Sstevel@tonic-gate /*
41*7c478bd9Sstevel@tonic-gate * rtime - get time from remote machine
42*7c478bd9Sstevel@tonic-gate *
43*7c478bd9Sstevel@tonic-gate * gets time, obtaining value from host
44*7c478bd9Sstevel@tonic-gate * on the udp/time socket. Since timeserver returns
45*7c478bd9Sstevel@tonic-gate * with time of day in seconds since Jan 1, 1900, must
46*7c478bd9Sstevel@tonic-gate * subtract seconds before Jan 1, 1970 to get
47*7c478bd9Sstevel@tonic-gate * what unix uses.
48*7c478bd9Sstevel@tonic-gate */
49*7c478bd9Sstevel@tonic-gate
50*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
51*7c478bd9Sstevel@tonic-gate #include <stdio.h>
52*7c478bd9Sstevel@tonic-gate #include <string.h>
53*7c478bd9Sstevel@tonic-gate #include <sys/socket.h>
54*7c478bd9Sstevel@tonic-gate #include <sys/time.h>
55*7c478bd9Sstevel@tonic-gate #include <errno.h>
56*7c478bd9Sstevel@tonic-gate #include <netinet/in.h>
57*7c478bd9Sstevel@tonic-gate #include <malloc.h>
58*7c478bd9Sstevel@tonic-gate
59*7c478bd9Sstevel@tonic-gate #define NYEARS (1970 - 1900)
60*7c478bd9Sstevel@tonic-gate #define TOFFSET ((uint_t)60*60*24*(365*NYEARS + (NYEARS/4)))
61*7c478bd9Sstevel@tonic-gate
62*7c478bd9Sstevel@tonic-gate extern int _socket(int, int, int);
63*7c478bd9Sstevel@tonic-gate extern int _sendto(int, const char *, int, int,
64*7c478bd9Sstevel@tonic-gate const struct sockaddr *, int);
65*7c478bd9Sstevel@tonic-gate extern int _recvfrom(int, char *, int, int,
66*7c478bd9Sstevel@tonic-gate struct sockaddr *, int *);
67*7c478bd9Sstevel@tonic-gate extern int _connect(int, struct sockaddr *, int);
68*7c478bd9Sstevel@tonic-gate extern int __rpc_dtbsize();
69*7c478bd9Sstevel@tonic-gate extern ssize_t read(int, void *, size_t);
70*7c478bd9Sstevel@tonic-gate extern int close(int);
71*7c478bd9Sstevel@tonic-gate static void do_close();
72*7c478bd9Sstevel@tonic-gate
73*7c478bd9Sstevel@tonic-gate int
rtime(addrp,timep,timeout)74*7c478bd9Sstevel@tonic-gate rtime(addrp, timep, timeout)
75*7c478bd9Sstevel@tonic-gate struct sockaddr_in *addrp;
76*7c478bd9Sstevel@tonic-gate struct timeval *timep;
77*7c478bd9Sstevel@tonic-gate struct timeval *timeout;
78*7c478bd9Sstevel@tonic-gate {
79*7c478bd9Sstevel@tonic-gate int s;
80*7c478bd9Sstevel@tonic-gate fd_set readfds;
81*7c478bd9Sstevel@tonic-gate int res;
82*7c478bd9Sstevel@tonic-gate uint_t thetime;
83*7c478bd9Sstevel@tonic-gate struct sockaddr_in from;
84*7c478bd9Sstevel@tonic-gate int fromlen;
85*7c478bd9Sstevel@tonic-gate int type;
86*7c478bd9Sstevel@tonic-gate
87*7c478bd9Sstevel@tonic-gate if (timeout == NULL) {
88*7c478bd9Sstevel@tonic-gate type = SOCK_STREAM;
89*7c478bd9Sstevel@tonic-gate } else {
90*7c478bd9Sstevel@tonic-gate type = SOCK_DGRAM;
91*7c478bd9Sstevel@tonic-gate }
92*7c478bd9Sstevel@tonic-gate s = _socket(AF_INET, type, 0);
93*7c478bd9Sstevel@tonic-gate if (s < 0) {
94*7c478bd9Sstevel@tonic-gate return (-1);
95*7c478bd9Sstevel@tonic-gate }
96*7c478bd9Sstevel@tonic-gate addrp->sin_family = AF_INET;
97*7c478bd9Sstevel@tonic-gate addrp->sin_port = htons(IPPORT_TIMESERVER);
98*7c478bd9Sstevel@tonic-gate if (type == SOCK_DGRAM) {
99*7c478bd9Sstevel@tonic-gate res = _sendto(s, (char *)&thetime, sizeof (thetime), 0,
100*7c478bd9Sstevel@tonic-gate (struct sockaddr *)addrp, sizeof (*addrp));
101*7c478bd9Sstevel@tonic-gate if (res < 0) {
102*7c478bd9Sstevel@tonic-gate do_close(s);
103*7c478bd9Sstevel@tonic-gate return (-1);
104*7c478bd9Sstevel@tonic-gate }
105*7c478bd9Sstevel@tonic-gate do {
106*7c478bd9Sstevel@tonic-gate FD_ZERO(&readfds);
107*7c478bd9Sstevel@tonic-gate FD_SET(s, &readfds);
108*7c478bd9Sstevel@tonic-gate res = select(__rpc_dtbsize(), &readfds, NULL,
109*7c478bd9Sstevel@tonic-gate NULL, timeout);
110*7c478bd9Sstevel@tonic-gate } while (res < 0 && errno == EINTR);
111*7c478bd9Sstevel@tonic-gate if (res <= 0) {
112*7c478bd9Sstevel@tonic-gate if (res == 0) {
113*7c478bd9Sstevel@tonic-gate errno = ETIMEDOUT;
114*7c478bd9Sstevel@tonic-gate }
115*7c478bd9Sstevel@tonic-gate do_close(s);
116*7c478bd9Sstevel@tonic-gate return (-1);
117*7c478bd9Sstevel@tonic-gate }
118*7c478bd9Sstevel@tonic-gate fromlen = sizeof (from);
119*7c478bd9Sstevel@tonic-gate res = _recvfrom(s, (char *)&thetime, sizeof (thetime), 0,
120*7c478bd9Sstevel@tonic-gate (struct sockaddr *)&from, &fromlen);
121*7c478bd9Sstevel@tonic-gate do_close(s);
122*7c478bd9Sstevel@tonic-gate if (res < 0) {
123*7c478bd9Sstevel@tonic-gate return (-1);
124*7c478bd9Sstevel@tonic-gate }
125*7c478bd9Sstevel@tonic-gate } else {
126*7c478bd9Sstevel@tonic-gate if (_connect(s, (struct sockaddr *)addrp,
127*7c478bd9Sstevel@tonic-gate sizeof (*addrp)) < 0) {
128*7c478bd9Sstevel@tonic-gate do_close(s);
129*7c478bd9Sstevel@tonic-gate return (-1);
130*7c478bd9Sstevel@tonic-gate }
131*7c478bd9Sstevel@tonic-gate res = read(s, (char *)&thetime, sizeof (thetime));
132*7c478bd9Sstevel@tonic-gate do_close(s);
133*7c478bd9Sstevel@tonic-gate if (res < 0) {
134*7c478bd9Sstevel@tonic-gate return (-1);
135*7c478bd9Sstevel@tonic-gate }
136*7c478bd9Sstevel@tonic-gate }
137*7c478bd9Sstevel@tonic-gate if (res != sizeof (thetime)) {
138*7c478bd9Sstevel@tonic-gate errno = EIO;
139*7c478bd9Sstevel@tonic-gate return (-1);
140*7c478bd9Sstevel@tonic-gate }
141*7c478bd9Sstevel@tonic-gate thetime = ntohl(thetime);
142*7c478bd9Sstevel@tonic-gate
143*7c478bd9Sstevel@tonic-gate thetime = thetime - TOFFSET;
144*7c478bd9Sstevel@tonic-gate #ifdef _ILP32
145*7c478bd9Sstevel@tonic-gate if (thetime > INT32_MAX)
146*7c478bd9Sstevel@tonic-gate thetime = INT32_MAX;
147*7c478bd9Sstevel@tonic-gate #endif
148*7c478bd9Sstevel@tonic-gate timep->tv_sec = thetime;
149*7c478bd9Sstevel@tonic-gate timep->tv_usec = 0;
150*7c478bd9Sstevel@tonic-gate return (0);
151*7c478bd9Sstevel@tonic-gate }
152*7c478bd9Sstevel@tonic-gate
153*7c478bd9Sstevel@tonic-gate static void
do_close(s)154*7c478bd9Sstevel@tonic-gate do_close(s)
155*7c478bd9Sstevel@tonic-gate int s;
156*7c478bd9Sstevel@tonic-gate {
157*7c478bd9Sstevel@tonic-gate int save;
158*7c478bd9Sstevel@tonic-gate
159*7c478bd9Sstevel@tonic-gate save = errno;
160*7c478bd9Sstevel@tonic-gate (void) close(s);
161*7c478bd9Sstevel@tonic-gate errno = save;
162*7c478bd9Sstevel@tonic-gate }
163