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/* $OpenBSD: ntpd.h,v 1.59 2005/07/15 03:37:15 henning Exp $ */
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/*
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* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <sys/socket.h>
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#include <sys/queue.h>
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#include <sys/time.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <stdarg.h>
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#include "ntp.h"
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#define NTPD_USER "_ntp"
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#define CONFFILE "/etc/ntpd.conf"
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#define READ_BUF_SIZE 4096
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#define NTPD_OPT_VERBOSE 0x0001
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#define NTPD_OPT_VERBOSE2 0x0002
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#define INTERVAL_QUERY_NORMAL 30 /* sync to peers every n secs */
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#define INTERVAL_QUERY_PATHETIC 60
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#define INTERVAL_QUERY_AGRESSIVE 5
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#define TRUSTLEVEL_BADPEER 6
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#define TRUSTLEVEL_PATHETIC 2
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#define TRUSTLEVEL_AGRESSIVE 8
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#define TRUSTLEVEL_MAX 10
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#define MAX_SERVERS_DNS 8
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#define QSCALE_OFF_MIN 0.05
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#define QSCALE_OFF_MAX 0.50
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#define QUERYTIME_MAX 15 /* single query might take n secs max */
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#define OFFSET_ARRAY_SIZE 8
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#define SETTIME_MIN_OFFSET 180 /* min offset for settime at start */
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#define SETTIME_TIMEOUT 15 /* max seconds to wait with -s */
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#define LOG_NEGLIGEE 128 /* negligible drift to not log (ms) */
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enum client_state {
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STATE_NONE,
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STATE_DNS_INPROGRESS,
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STATE_DNS_TEMPFAIL,
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STATE_DNS_DONE,
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STATE_QUERY_SENT,
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STATE_REPLY_RECEIVED
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};
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struct listen_addr {
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TAILQ_ENTRY(listen_addr) entry;
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struct sockaddr_storage sa;
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int fd;
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};
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struct ntp_addr {
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struct ntp_addr *next;
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struct sockaddr_storage ss;
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};
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struct ntp_addr_wrap {
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char *name;
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struct ntp_addr *a;
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u_int8_t pool;
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};
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struct ntp_status {
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double rootdelay;
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double rootdispersion;
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double reftime;
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u_int32_t refid;
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u_int32_t refid4;
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u_int8_t leap;
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int8_t precision;
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u_int8_t poll;
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u_int8_t stratum;
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};
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struct ntp_offset {
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struct ntp_status status;
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double offset;
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double delay;
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double error;
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time_t rcvd;
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u_int8_t good;
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};
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struct ntp_peer {
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TAILQ_ENTRY(ntp_peer) entry;
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struct ntp_addr_wrap addr_head;
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struct ntp_addr *addr;
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struct ntp_query *query;
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struct ntp_offset reply[OFFSET_ARRAY_SIZE];
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struct ntp_offset update;
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enum client_state state;
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time_t next;
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time_t deadline;
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u_int32_t id;
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u_int8_t shift;
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u_int8_t trustlevel;
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int lasterror;
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};
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struct ntpd_conf {
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TAILQ_HEAD(listen_addrs, listen_addr) listen_addrs;
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TAILQ_HEAD(ntp_peers, ntp_peer) ntp_peers;
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struct ntp_status status;
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u_int8_t listen_all;
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u_int8_t settime;
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u_int8_t debug;
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u_int32_t scale;
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};
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struct buf {
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TAILQ_ENTRY(buf) entry;
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u_char *buf;
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size_t size;
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size_t wpos;
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size_t rpos;
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};
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struct msgbuf {
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TAILQ_HEAD(, buf) bufs;
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u_int32_t queued;
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int fd;
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};
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struct buf_read {
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size_t wpos;
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u_char buf[READ_BUF_SIZE];
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u_char *rptr;
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};
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/* ipc messages */
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#define IMSG_HEADER_SIZE sizeof(struct imsg_hdr)
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#define MAX_IMSGSIZE 8192
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struct imsgbuf {
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int fd;
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pid_t pid;
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struct buf_read r;
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struct msgbuf w;
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};
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enum imsg_type {
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IMSG_NONE,
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IMSG_ADJTIME,
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IMSG_SETTIME,
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IMSG_HOST_DNS
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};
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struct imsg_hdr {
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enum imsg_type type;
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u_int32_t peerid;
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pid_t pid;
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u_int16_t len;
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};
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struct imsg {
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struct imsg_hdr hdr;
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void *data;
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};
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/* prototypes */
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/* log.c */
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void log_init(int);
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void vlog(int, const char *, va_list);
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void log_warn(const char *, ...);
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void log_warnx(const char *, ...);
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void log_info(const char *, ...);
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void log_debug(const char *, ...);
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void fatal(const char *);
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void fatalx(const char *);
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const char * log_sockaddr(struct sockaddr *);
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/* buffer.c */
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struct buf *buf_open(size_t);
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int buf_add(struct buf *, void *, size_t);
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int buf_close(struct msgbuf *, struct buf *);
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void buf_free(struct buf *);
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void msgbuf_init(struct msgbuf *);
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void msgbuf_clear(struct msgbuf *);
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int msgbuf_write(struct msgbuf *);
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/* imsg.c */
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void imsg_init(struct imsgbuf *, int);
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int imsg_read(struct imsgbuf *);
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int imsg_get(struct imsgbuf *, struct imsg *);
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int imsg_compose(struct imsgbuf *, enum imsg_type, u_int32_t, pid_t,
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void *, u_int16_t);
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struct buf *imsg_create(struct imsgbuf *, enum imsg_type, u_int32_t, pid_t,
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u_int16_t);
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int imsg_add(struct buf *, void *, u_int16_t);
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int imsg_close(struct imsgbuf *, struct buf *);
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void imsg_free(struct imsg *);
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/* ntp.c */
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pid_t ntp_main(int[2], struct ntpd_conf *);
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void priv_adjtime(void);
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void priv_settime(double);
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void priv_host_dns(char *, u_int32_t);
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/* parse.y */
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int parse_config(const char *, struct ntpd_conf *);
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/* config.c */
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int host(const char *, struct ntp_addr **);
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int host_dns(const char *, struct ntp_addr **);
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struct ntp_peer *new_peer(void);
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/* ntp_msg.c */
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int ntp_getmsg(char *, ssize_t, struct ntp_msg *);
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int ntp_sendmsg(int, struct sockaddr *, struct ntp_msg *, ssize_t, int);
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/* server.c */
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int setup_listeners(struct servent *, struct ntpd_conf *, u_int *);
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int ntp_reply(int, struct sockaddr *, struct ntp_msg *, int);
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int server_dispatch(int, struct ntpd_conf *);
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/* client.c */
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int client_peer_init(struct ntp_peer *);
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int client_addr_init(struct ntp_peer *);
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int client_nextaddr(struct ntp_peer *);
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int client_query(struct ntp_peer *);
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int client_dispatch(struct ntp_peer *, u_int8_t);
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void client_log_error(struct ntp_peer *, const char *, int);
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void update_scale(double);
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time_t scale_interval(time_t);
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time_t error_interval(void);
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void set_next(struct ntp_peer *, time_t);
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/* util.c */
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double gettime(void);
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void d_to_tv(double, struct timeval *);
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double lfp_to_d(struct l_fixedpt);
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struct l_fixedpt d_to_lfp(double);
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double sfp_to_d(struct s_fixedpt);
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struct s_fixedpt d_to_sfp(double);
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