1 /* $OpenBSD: ntp_msg.c,v 1.13 2004/12/08 17:35:16 mickey Exp $ */
4 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
5 * Copyright (c) 2004 Alexander Guy <alexander.guy@andern.org>
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
16 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
17 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 #include <sys/param.h>
30 ntp_getmsg(char *p, ssize_t len, struct ntp_msg *msg)
32 if (len != NTP_MSGSIZE_NOAUTH && len != NTP_MSGSIZE) {
33 log_warnx("malformed packet received");
37 #define copyin(f,p) memcpy(&(f), (p), sizeof(f)); (p) += sizeof(f)
39 copyin(msg->status, p);
40 copyin(msg->stratum, p);
41 copyin(msg->ppoll, p);
42 copyin(msg->precision, p);
43 copyin(msg->rootdelay.int_parts, p);
44 copyin(msg->rootdelay.fractions, p);
45 copyin(msg->dispersion.int_parts, p);
46 copyin(msg->dispersion.fractions, p);
47 copyin(msg->refid, p);
48 copyin(msg->reftime.int_partl, p);
49 copyin(msg->reftime.fractionl, p);
50 copyin(msg->orgtime.int_partl, p);
51 copyin(msg->orgtime.fractionl, p);
52 copyin(msg->rectime.int_partl, p);
53 copyin(msg->rectime.fractionl, p);
54 copyin(msg->xmttime.int_partl, p);
55 copyin(msg->xmttime.fractionl, p);
61 ntp_sendmsg(int fd, struct sockaddr *sa, struct ntp_msg *msg, ssize_t len,
64 char buf[NTP_MSGSIZE];
68 #define copyout(p,f) memcpy((p), &(f), sizeof(f)); p += sizeof(f)
70 copyout(p, msg->status);
71 copyout(p, msg->stratum);
72 copyout(p, msg->ppoll);
73 copyout(p, msg->precision);
74 copyout(p, msg->rootdelay.int_parts);
75 copyout(p, msg->rootdelay.fractions);
76 copyout(p, msg->dispersion.int_parts);
77 copyout(p, msg->dispersion.fractions);
78 copyout(p, msg->refid);
79 copyout(p, msg->reftime.int_partl);
80 copyout(p, msg->reftime.fractionl);
81 copyout(p, msg->orgtime.int_partl);
82 copyout(p, msg->orgtime.fractionl);
83 copyout(p, msg->rectime.int_partl);
84 copyout(p, msg->rectime.fractionl);
85 copyout(p, msg->xmttime.int_partl);
86 copyout(p, msg->xmttime.fractionl);
93 if (sendto(fd, &buf, len, 0, sa, sa_len) != len) {
94 if (errno == ENOBUFS || errno == EHOSTUNREACH ||
95 errno == ENETDOWN || errno == EHOSTDOWN) {
96 /* logging is futile */