1: /*
2: * ntpd.h - Prototypes for ntpd.
3: */
4:
5: #include "ntp.h"
6: #include "ntp_debug.h"
7: #include "ntp_syslog.h"
8: #include "ntp_select.h"
9: #include "ntp_malloc.h"
10: #include "ntp_refclock.h"
11: #include "recvbuff.h"
12:
13: /* ntp_config.c */
14:
15: #define TAI_1972 10 /* initial TAI offset (s) */
16: extern char *keysdir; /* crypto keys and leaptable directory */
17: extern char * saveconfigdir; /* ntpq saveconfig output directory */
18:
19: extern void getconfig (int, char **);
20: extern void ctl_clr_stats (void);
21: extern int ctlclrtrap (sockaddr_u *, struct interface *, int);
22: extern u_short ctlpeerstatus (struct peer *);
23: extern int ctlsettrap (sockaddr_u *, struct interface *, int, int);
24: extern u_short ctlsysstatus (void);
25: extern void init_control (void);
26: extern void init_logging (char const *, int);
27: extern void setup_logfile (void);
28: extern void process_control (struct recvbuf *, int);
29: extern void report_event (int, struct peer *, const char *);
30:
31: /* ntp_control.c */
32: /*
33: * Structure for translation tables between internal system
34: * variable indices and text format.
35: */
36: struct ctl_var {
37: u_short code;
38: u_short flags;
39: char *text;
40: };
41: /*
42: * Flag values
43: */
44: #define CAN_READ 0x01
45: #define CAN_WRITE 0x02
46:
47: #define DEF 0x20
48: #define PADDING 0x40
49: #define EOV 0x80
50:
51: #define RO (CAN_READ)
52: #define WO (CAN_WRITE)
53: #define RW (CAN_READ|CAN_WRITE)
54:
55: extern char * add_var (struct ctl_var **, u_long, u_short);
56: extern void free_varlist (struct ctl_var *);
57: extern void set_var (struct ctl_var **, const char *, u_long, u_short);
58: extern void set_sys_var (const char *, u_long, u_short);
59:
60: /* ntp_intres.c */
61: extern void ntp_res_name (sockaddr_u, u_short);
62: extern void ntp_res_recv (void);
63: extern void ntp_intres (void);
64: #ifdef SYS_WINNT
65: extern unsigned WINAPI ntp_intres_thread (void *);
66: #endif
67:
68: /* ntp_io.c */
69: typedef struct interface_info {
70: endpt * ep;
71: u_char action;
72: } interface_info_t;
73:
74: typedef void (*interface_receiver_t) (void *, interface_info_t *);
75:
76: extern int disable_dynamic_updates;
77:
78: extern void interface_enumerate (interface_receiver_t, void *);
79: extern endpt * findinterface (sockaddr_u *);
80: extern endpt * findbcastinter (sockaddr_u *);
81: extern void enable_broadcast (endpt *, sockaddr_u *);
82: extern void enable_multicast_if (endpt *, sockaddr_u *);
83: extern void interface_update (interface_receiver_t, void *);
84:
85: extern void init_io (void);
86: extern void io_open_sockets (void);
87: extern void input_handler (l_fp *);
88: extern void io_clr_stats (void);
89: extern void io_setbclient (void);
90: extern void io_unsetbclient (void);
91: extern void io_multicast_add(sockaddr_u *);
92: extern void io_multicast_del(sockaddr_u *);
93: extern void sendpkt (sockaddr_u *, struct interface *, int, struct pkt *, int);
94: #ifndef SYS_WINNT
95: extern void kill_asyncio (int);
96: #endif
97: #ifdef DEBUG
98: extern void collect_timing (struct recvbuf *, const char *, int, l_fp *);
99: #endif
100: #ifdef HAVE_SIGNALED_IO
101: extern void wait_for_signal (void);
102: extern void unblock_io_and_alarm (void);
103: extern void block_io_and_alarm (void);
104: #define UNBLOCK_IO_AND_ALARM() unblock_io_and_alarm()
105: #define BLOCK_IO_AND_ALARM() block_io_and_alarm()
106: #else
107: #define UNBLOCK_IO_AND_ALARM()
108: #define BLOCK_IO_AND_ALARM()
109: #endif
110: #define latoa(pif) localaddrtoa(pif)
111: extern const char * localaddrtoa(endpt *);
112:
113: /* ntp_loopfilter.c */
114: extern void init_loopfilter(void);
115: extern int local_clock(struct peer *, double);
116: extern void adj_host_clock(void);
117: extern void loop_config(int, double);
118: extern void huffpuff(void);
119: extern u_long sys_clocktime;
120: extern u_int sys_tai;
121:
122: /* ntp_monitor.c */
123: extern void init_mon (void);
124: extern void mon_start (int);
125: extern void mon_stop (int);
126: extern int ntp_monitor (struct recvbuf *, int);
127: extern void ntp_monclearinterface (struct interface *interface);
128:
129: /* ntp_peer.c */
130: extern void init_peer (void);
131: extern struct peer *findexistingpeer (sockaddr_u *, struct peer *, int, u_char);
132: extern struct peer *findpeer (struct recvbuf *, int, int *);
133: extern struct peer *findpeerbyassoc (u_int);
134: extern void set_peerdstadr (struct peer *peer, struct interface *interface);
135: extern struct peer *newpeer (sockaddr_u *, struct interface *, int, int, int, int, u_int, u_char, int, keyid_t);
136: extern void peer_all_reset (void);
137: extern void peer_clr_stats (void);
138: extern struct peer *peer_config (sockaddr_u *, struct interface *, int, int, int, int, u_int, int, keyid_t, u_char *);
139: extern void peer_reset (struct peer *);
140: extern void refresh_all_peerinterfaces (void);
141: extern void unpeer (struct peer *);
142: extern void clear_all (void);
143: extern int score_all (struct peer *);
144: extern struct peer *findmanycastpeer (struct recvbuf *);
145:
146: /* ntp_crypto.c */
147: #ifdef OPENSSL
148: extern int crypto_recv (struct peer *, struct recvbuf *);
149: extern int crypto_xmit (struct peer *, struct pkt *,
150: struct recvbuf *, int,
151: struct exten *, keyid_t);
152: extern keyid_t session_key (sockaddr_u *, sockaddr_u *, keyid_t,
153: keyid_t, u_long);
154: extern int make_keylist (struct peer *, struct interface *);
155: extern void key_expire (struct peer *);
156: extern void crypto_update (void);
157: extern void crypto_config (int, char *);
158: extern void crypto_setup (void);
159: extern u_int crypto_ident (struct peer *);
160: extern struct exten *crypto_args (struct peer *, u_int, associd_t, char *);
161: extern int crypto_public (struct peer *, u_char *, u_int);
162: extern void value_free (struct value *);
163: extern char *iffpar_file;
164: extern EVP_PKEY *iffpar_pkey;
165: extern char *gqpar_file;
166: extern EVP_PKEY *gqpar_pkey;
167: extern char *mvpar_file;
168: extern EVP_PKEY *mvpar_pkey;
169: extern struct value tai_leap;
170: #endif /* OPENSSL */
171:
172: /* ntp_proto.c */
173: extern void transmit (struct peer *);
174: extern void receive (struct recvbuf *);
175: extern void peer_clear (struct peer *, char *);
176: extern void process_packet (struct peer *, struct pkt *, u_int);
177: extern void clock_select (void);
178:
179: extern int leap_tai; /* TAI at next leap */
180: extern u_long leap_sec; /* next scheduled leap from file */
181: extern u_long leap_peers; /* next scheduled leap from peers */
182: extern u_long leapsec; /* seconds to next leap */
183: extern u_long leap_expire; /* leap information expiration */
184: extern int sys_orphan;
185: extern double sys_mindisp;
186: extern double sys_maxdist;
187:
188: /*
189: * there seems to be a bug in the IRIX 4 compiler which prevents
190: * u_char from beeing used in prototyped functions.
191: * This is also true AIX compiler.
192: * So give up and define it to be int. WLJ
193: */
194: extern void poll_update (struct peer *, int);
195:
196: extern void clear (struct peer *);
197: extern void clock_filter (struct peer *, double, double, double);
198: extern void init_proto (void);
199: extern void proto_config (int, u_long, double, sockaddr_u *);
200: extern void proto_clr_stats (void);
201:
202: #ifdef REFCLOCK
203: /* ntp_refclock.c */
204: extern int refclock_newpeer (struct peer *);
205: extern void refclock_unpeer (struct peer *);
206: extern void refclock_receive (struct peer *);
207: extern void refclock_transmit (struct peer *);
208: extern void init_refclock (void);
209: #endif /* REFCLOCK */
210:
211: /* ntp_request.c */
212: extern void init_request (void);
213: extern void process_private (struct recvbuf *, int);
214:
215: /* ntp_restrict.c */
216: extern void init_restrict (void);
217: extern u_short restrictions (sockaddr_u *);
218: extern void hack_restrict (int, sockaddr_u *, sockaddr_u *, u_short, u_short);
219:
220: /* ntp_timer.c */
221: extern void init_timer (void);
222: extern void reinit_timer (void);
223: extern void timer (void);
224: extern void timer_clr_stats (void);
225: extern void timer_interfacetimeout (u_long);
226: extern volatile int interface_interval;
227: #ifdef OPENSSL
228: extern char *sys_hostname; /* host name */
229: extern char *sys_groupname; /* group name */
230: extern char *group_name; /* group name */
231: extern u_long sys_revoke; /* keys revoke timeout */
232: extern u_long sys_automax; /* session key timeout */
233: #endif /* OPENSSL */
234:
235: /* ntp_util.c */
236: extern void init_util (void);
237: extern void write_stats (void);
238: extern void stats_config (int, const char *);
239: extern void record_peer_stats (sockaddr_u *, int, double, double, double, double);
240: extern void record_proto_stats (char *);
241: extern void record_loop_stats (double, double, double, double, int);
242: extern void record_clock_stats (sockaddr_u *, const char *);
243: extern void record_raw_stats (sockaddr_u *, sockaddr_u *, l_fp *, l_fp *, l_fp *, l_fp *);
244: extern u_long leap_month(u_long);
245: extern void record_crypto_stats (sockaddr_u *, const char *);
246: #ifdef DEBUG
247: extern void record_timing_stats (const char *);
248: #endif
249: extern u_short sock_hash (sockaddr_u *);
250: extern char * fstostr(time_t); /* NTP timescale seconds */
251: extern double old_drift;
252: extern int drift_file_sw;
253: extern double wander_threshold;
254: extern double wander_resid;
255:
256: /*
257: * Variable declarations for ntpd.
258: */
259: /* ntp_config.c */
260: extern char const * progname;
261: extern char *sys_phone[]; /* ACTS phone numbers */
262: #if defined(HAVE_SCHED_SETSCHEDULER)
263: extern int config_priority_override;
264: extern int config_priority;
265: #endif
266: extern char *ntp_signd_socket;
267: extern struct config_tree *cfg_tree_history;
268:
269: #ifdef BC_LIST_FRAMEWORK_NOT_YET_USED
270: /*
271: * backwards compatibility flags
272: */
273: typedef struct bc_entry_tag {
274: int token;
275: int enabled;
276: } bc_entry;
277:
278: extern bc_entry bc_list[];
279: #endif
280:
281: /* ntp_control.c */
282: extern int num_ctl_traps;
283: extern keyid_t ctl_auth_keyid; /* keyid used for authenticating write requests */
284:
285: /*
286: * Statistic counters to keep track of requests and responses.
287: */
288: extern u_long ctltimereset; /* time stats reset */
289: extern u_long numctlreq; /* number of requests we've received */
290: extern u_long numctlbadpkts; /* number of bad control packets */
291: extern u_long numctlresponses; /* number of resp packets sent with data */
292: extern u_long numctlfrags; /* number of fragments sent */
293: extern u_long numctlerrors; /* number of error responses sent */
294: extern u_long numctltooshort; /* number of too short input packets */
295: extern u_long numctlinputresp; /* number of responses on input */
296: extern u_long numctlinputfrag; /* number of fragments on input */
297: extern u_long numctlinputerr; /* number of input pkts with err bit set */
298: extern u_long numctlbadoffset; /* number of input pkts with nonzero offset */
299: extern u_long numctlbadversion; /* number of input pkts with unknown version */
300: extern u_long numctldatatooshort; /* data too short for count */
301: extern u_long numctlbadop; /* bad op code found in packet */
302: extern u_long numasyncmsgs; /* number of async messages we've sent */
303:
304: /* ntp_intres.c */
305: extern keyid_t req_keyid; /* request keyid */
306: extern int req_keytype; /* OpenSSL NID such as NID_md5 */
307: extern size_t req_hashlen; /* digest size for req_keytype */
308: extern char * req_file; /* name of the file with configuration info */
309: #ifdef SYS_WINNT
310: extern HANDLE ResolverEventHandle;
311: #else
312: extern int resolver_pipe_fd[2]; /* used to let the resolver process alert the parent process */
313: #endif /* SYS_WINNT */
314:
315: /*
316: * Other statistics of possible interest
317: */
318: extern volatile u_long packets_dropped; /* total number of packets dropped on reception */
319: extern volatile u_long packets_ignored; /* packets received on wild card interface */
320: extern volatile u_long packets_received;/* total number of packets received */
321: extern u_long packets_sent; /* total number of packets sent */
322: extern u_long packets_notsent; /* total number of packets which couldn't be sent */
323:
324: extern volatile u_long handler_calls; /* number of calls to interrupt handler */
325: extern volatile u_long handler_pkts; /* number of pkts received by handler */
326: extern u_long io_timereset; /* time counters were reset */
327:
328: /*
329: * Interface stuff
330: */
331: extern endpt * any_interface; /* IPv4 wildcard */
332: extern endpt * any6_interface; /* IPv6 wildcard */
333: extern endpt * loopback_interface; /* IPv4 loopback for refclocks */
334:
335: /*
336: * File descriptor masks etc. for call to select
337: */
338: extern fd_set activefds;
339: extern int maxactivefd;
340:
341: /* ntp_loopfilter.c */
342: extern double drift_comp; /* clock frequency (s/s) */
343: extern double clock_stability; /* clock stability (s/s) */
344: extern double clock_max; /* max offset before step (s) */
345: extern double clock_panic; /* max offset before panic (s) */
346: extern double clock_phi; /* dispersion rate (s/s) */
347: extern double clock_minstep; /* step timeout (s) */
348: extern double clock_codec; /* codec frequency */
349: #ifdef KERNEL_PLL
350: extern int pll_status; /* status bits for kernel pll */
351: #endif /* KERNEL_PLL */
352:
353: /*
354: * Clock state machine control flags
355: */
356: extern int ntp_enable; /* clock discipline enabled */
357: extern int pll_control; /* kernel support available */
358: extern int kern_enable; /* kernel support enabled */
359: extern int pps_enable; /* kernel PPS discipline enabled */
360: extern int ext_enable; /* external clock enabled */
361: extern int cal_enable; /* refclock calibrate enable */
362: extern int allow_panic; /* allow panic correction */
363: extern int mode_ntpdate; /* exit on first clock set */
364: extern int peer_ntpdate; /* count of ntpdate peers */
365:
366: /*
367: * Clock state machine variables
368: */
369: extern u_char sys_poll; /* system poll interval (log2 s) */
370: extern int state; /* clock discipline state */
371: extern int tc_counter; /* poll-adjust counter */
372: extern u_long last_time; /* time of last clock update (s) */
373: extern double last_offset; /* last clock offset (s) */
374: extern u_char allan_xpt; /* Allan intercept (log2 s) */
375: extern double clock_jitter; /* clock jitter (s) */
376: extern double sys_offset; /* system offset (s) */
377: extern double sys_jitter; /* system jitter (s) */
378:
379: /* ntp_monitor.c */
380: extern struct mon_data mon_mru_list;
381: extern struct mon_data mon_fifo_list;
382: extern int mon_enabled;
383:
384: /* ntp_peer.c */
385: extern struct peer *peer_hash[]; /* peer hash table */
386: extern int peer_hash_count[]; /* count of peers in each bucket */
387: extern struct peer *assoc_hash[]; /* association ID hash table */
388: extern int assoc_hash_count[];
389: extern int peer_free_count;
390:
391: /*
392: * Miscellaneous statistic counters which may be queried.
393: */
394: extern u_long peer_timereset; /* time stat counters were zeroed */
395: extern u_long findpeer_calls; /* number of calls to findpeer */
396: extern u_long assocpeer_calls; /* number of calls to findpeerbyassoc */
397: extern u_long peer_allocations; /* number of allocations from the free list */
398: extern u_long peer_demobilizations; /* number of structs freed to free list */
399: extern int total_peer_structs; /* number of peer structs in circulation */
400: extern int peer_associations; /* mobilized associations */
401: extern int peer_preempt; /* preemptable associations */
402: /* ntp_proto.c */
403: /*
404: * System variables are declared here. See Section 3.2 of the
405: * specification.
406: */
407: extern u_char sys_leap; /* system leap indicator */
408: extern u_char sys_stratum; /* system stratum */
409: extern s_char sys_precision; /* local clock precision */
410: extern double sys_rootdelay; /* roundtrip delay to primary source */
411: extern double sys_rootdisp; /* dispersion to primary source */
412: extern u_int32 sys_refid; /* reference id */
413: extern l_fp sys_reftime; /* last update time */
414: extern struct peer *sys_peer; /* current peer */
415:
416: /*
417: * Nonspecified system state variables.
418: */
419: extern int sys_bclient; /* we set our time to broadcasts */
420: extern double sys_bdelay; /* broadcast client default delay */
421: extern int sys_authenticate; /* requre authentication for config */
422: extern l_fp sys_authdelay; /* authentication delay */
423: extern keyid_t sys_private; /* private value for session seed */
424: extern int sys_manycastserver; /* respond to manycast client pkts */
425: extern int sys_minclock; /* minimum survivors */
426: extern int sys_minsane; /* minimum candidates */
427: extern int sys_floor; /* cluster stratum floor */
428: extern int sys_ceiling; /* cluster stratum ceiling */
429: extern u_char sys_ttl[MAX_TTL]; /* ttl mapping vector */
430: extern int sys_ttlmax; /* max ttl mapping vector index */
431:
432: /*
433: * Statistics counters
434: */
435: extern u_long sys_stattime; /* time since reset */
436: extern u_long sys_received; /* packets received */
437: extern u_long sys_processed; /* packets for this host */
438: extern u_long sys_restricted; /* restricted packets */
439: extern u_long sys_newversion; /* current version */
440: extern u_long sys_oldversion; /* old version */
441: extern u_long sys_restricted; /* access denied */
442: extern u_long sys_badlength; /* bad length or format */
443: extern u_long sys_badauth; /* bad authentication */
444: extern u_long sys_declined; /* declined */
445: extern u_long sys_limitrejected; /* rate exceeded */
446: extern u_long sys_kodsent; /* KoD sent */
447:
448: /* ntp_refclock.c */
449: #ifdef REFCLOCK
450: #ifdef PPS
451: extern int fdpps; /* pps file descriptor */
452: #endif /* PPS */
453: #endif
454:
455: /* ntp_request.c */
456: extern keyid_t info_auth_keyid; /* keyid used to authenticate requests */
457:
458: /* ntp_restrict.c */
459: extern restrict_u * restrictlist4; /* IPv4 restriction list */
460: extern restrict_u * restrictlist6; /* IPv6 restriction list */
461: extern int ntp_minpkt;
462: extern int ntp_minpoll;
463: extern int mon_age; /* monitor preempt age */
464:
465: /* ntp_timer.c */
466: extern volatile int alarm_flag; /* alarm flag */
467: extern volatile u_long alarm_overflow;
468: extern u_long current_time; /* current time (s) */
469: extern u_long timer_timereset;
470: extern u_long timer_overflows;
471: extern u_long timer_xmtcalls;
472:
473: /* ntp_util.c */
474: extern int stats_control; /* write stats to fileset? */
475: extern int stats_write_period; /* # of seconds between writes. */
476: extern double stats_write_tolerance;
477:
478: /* ntpd.c */
479: extern volatile int debug; /* debugging flag */
480: extern int nofork; /* no-fork flag */
481: extern int initializing; /* initializing flag */
482: #ifdef HAVE_DROPROOT
483: extern int droproot; /* flag: try to drop root privileges after startup */
484: extern char *user; /* user to switch to */
485: extern char *group; /* group to switch to */
486: extern const char *chrootdir; /* directory to chroot to */
487: #endif
488:
489: /* refclock_conf.c */
490: #ifdef REFCLOCK
491: /* refclock configuration table */
492: extern struct refclock * const refclock_conf[];
493: extern u_char num_refclock_conf;
494: #endif
495:
496: /* ntp_signd.c */
497: #ifdef HAVE_NTP_SIGND
498: extern void
499: send_via_ntp_signd(
500: struct recvbuf *rbufp, /* receive packet pointer */
501: int xmode,
502: keyid_t xkeyid,
503: int flags,
504: struct pkt *xpkt
505: );
506: #endif
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