ntp_config.c revision 330141 
1/* ntp_config.c
2 *
3 * This file contains the ntpd configuration code.
4 *
5 * Written By:	Sachin Kamboj
6 *		University of Delaware
7 *		Newark, DE 19711
8 * Some parts borrowed from the older ntp_config.c
9 * Copyright (c) 2006
10 */
11
12#ifdef HAVE_CONFIG_H
13# include <config.h>
14#endif
15
16#ifdef HAVE_NETINFO
17# include <netinfo/ni.h>
18#endif
19
20#include <stdio.h>
21#include <ctype.h>
22#ifdef HAVE_SYS_PARAM_H
23# include <sys/param.h>
24#endif
25#include <signal.h>
26#ifndef SIGCHLD
27# define SIGCHLD SIGCLD
28#endif
29#ifdef HAVE_SYS_WAIT_H
30# include <sys/wait.h>
31#endif
32
33#include <isc/net.h>
34#include <isc/result.h>
35
36#include "ntp.h"
37#include "ntpd.h"
38#include "ntp_io.h"
39#include "ntp_unixtime.h"
40#include "ntp_refclock.h"
41#include "ntp_filegen.h"
42#include "ntp_stdlib.h"
43#include "lib_strbuf.h"
44#include "ntp_assert.h"
45#include "ntp_random.h"
46/*
47 * [Bug 467]: Some linux headers collide with CONFIG_PHONE and CONFIG_KEYS
48 * so #include these later.
49 */
50#include "ntp_config.h"
51#include "ntp_cmdargs.h"
52#include "ntp_scanner.h"
53#include "ntp_parser.h"
54#include "ntpd-opts.h"
55
56#ifndef IGNORE_DNS_ERRORS
57# define DNSFLAGS 0
58#else
59# define DNSFLAGS GAIR_F_IGNDNSERR
60#endif
61
62extern int yyparse(void);
63
64/* Bug 2817 */
65#if defined(HAVE_SYS_MMAN_H)
66# include <sys/mman.h>
67#endif
68
69/* list of servers from command line for config_peers() */
70int	cmdline_server_count;
71char **	cmdline_servers;
72
73/* Current state of memory locking:
74 * -1: default
75 *  0: memory locking disabled
76 *  1: Memory locking enabled
77 */
78int	cur_memlock = -1;
79
80/*
81 * "logconfig" building blocks
82 */
83struct masks {
84	const char * const	name;
85	const u_int32		mask;
86};
87
88static struct masks logcfg_class[] = {
89	{ "clock",	NLOG_OCLOCK },
90	{ "peer",	NLOG_OPEER },
91	{ "sync",	NLOG_OSYNC },
92	{ "sys",	NLOG_OSYS },
93	{ NULL,		0 }
94};
95
96/* logcfg_noclass_items[] masks are complete and must not be shifted */
97static struct masks logcfg_noclass_items[] = {
98	{ "allall",		NLOG_SYSMASK | NLOG_PEERMASK | NLOG_CLOCKMASK | NLOG_SYNCMASK },
99	{ "allinfo",		NLOG_SYSINFO | NLOG_PEERINFO | NLOG_CLOCKINFO | NLOG_SYNCINFO },
100	{ "allevents",		NLOG_SYSEVENT | NLOG_PEEREVENT | NLOG_CLOCKEVENT | NLOG_SYNCEVENT },
101	{ "allstatus",		NLOG_SYSSTATUS | NLOG_PEERSTATUS | NLOG_CLOCKSTATUS | NLOG_SYNCSTATUS },
102	{ "allstatistics",	NLOG_SYSSTATIST | NLOG_PEERSTATIST | NLOG_CLOCKSTATIST | NLOG_SYNCSTATIST },
103	/* the remainder are misspellings of clockall, peerall, sysall, and syncall. */
104	{ "allclock",		(NLOG_INFO | NLOG_STATIST | NLOG_EVENT | NLOG_STATUS) << NLOG_OCLOCK },
105	{ "allpeer",		(NLOG_INFO | NLOG_STATIST | NLOG_EVENT | NLOG_STATUS) << NLOG_OPEER },
106	{ "allsys",		(NLOG_INFO | NLOG_STATIST | NLOG_EVENT | NLOG_STATUS) << NLOG_OSYS },
107	{ "allsync",		(NLOG_INFO | NLOG_STATIST | NLOG_EVENT | NLOG_STATUS) << NLOG_OSYNC },
108	{ NULL,			0 }
109};
110
111/* logcfg_class_items[] masks are shiftable by NLOG_O* counts */
112static struct masks logcfg_class_items[] = {
113	{ "all",		NLOG_INFO | NLOG_EVENT | NLOG_STATUS | NLOG_STATIST },
114	{ "info",		NLOG_INFO },
115	{ "events",		NLOG_EVENT },
116	{ "status",		NLOG_STATUS },
117	{ "statistics",		NLOG_STATIST },
118	{ NULL,			0 }
119};
120
121typedef struct peer_resolved_ctx_tag {
122	int		flags;
123	int		host_mode;	/* T_* token identifier */
124	u_short		family;
125	keyid_t		keyid;
126	u_char		hmode;		/* MODE_* */
127	u_char		version;
128	u_char		minpoll;
129	u_char		maxpoll;
130	u_int32		ttl;
131	const char *	group;
132} peer_resolved_ctx;
133
134/* Limits */
135#define MAXPHONE	10	/* maximum number of phone strings */
136#define MAXPPS		20	/* maximum length of PPS device string */
137
138/*
139 * Miscellaneous macros
140 */
141#define ISEOL(c)	((c) == '#' || (c) == '\n' || (c) == '\0')
142#define ISSPACE(c)	((c) == ' ' || (c) == '\t')
143
144#define _UC(str)	((char *)(intptr_t)(str))
145
146/*
147 * Definitions of things either imported from or exported to outside
148 */
149extern int yydebug;			/* ntp_parser.c (.y) */
150config_tree cfgt;			/* Parser output stored here */
151struct config_tree_tag *cfg_tree_history;	/* History of configs */
152char *	sys_phone[MAXPHONE] = {NULL};	/* ACTS phone numbers */
153char	default_keysdir[] = NTP_KEYSDIR;
154char *	keysdir = default_keysdir;	/* crypto keys directory */
155char *	saveconfigdir;
156#if defined(HAVE_SCHED_SETSCHEDULER)
157int	config_priority_override = 0;
158int	config_priority;
159#endif
160
161const char *config_file;
162static char default_ntp_signd_socket[] =
163#ifdef NTP_SIGND_PATH
164					NTP_SIGND_PATH;
165#else
166					"";
167#endif
168char *ntp_signd_socket = default_ntp_signd_socket;
169#ifdef HAVE_NETINFO
170struct netinfo_config_state *config_netinfo = NULL;
171int check_netinfo = 1;
172#endif /* HAVE_NETINFO */
173#ifdef SYS_WINNT
174char *alt_config_file;
175LPTSTR temp;
176char config_file_storage[MAX_PATH];
177char alt_config_file_storage[MAX_PATH];
178#endif /* SYS_WINNT */
179
180#ifdef HAVE_NETINFO
181/*
182 * NetInfo configuration state
183 */
184struct netinfo_config_state {
185	void *domain;		/* domain with config */
186	ni_id config_dir;	/* ID config dir      */
187	int prop_index;		/* current property   */
188	int val_index;		/* current value      */
189	char **val_list;	/* value list         */
190};
191#endif
192
193struct REMOTE_CONFIG_INFO remote_config;  /* Remote configuration buffer and
194					     pointer info */
195int old_config_style = 1;    /* A boolean flag, which when set,
196			      * indicates that the old configuration
197			      * format with a newline at the end of
198			      * every command is being used
199			      */
200int	cryptosw;		/* crypto command called */
201
202extern char *stats_drift_file;	/* name of the driftfile */
203
204#ifdef BC_LIST_FRAMEWORK_NOT_YET_USED
205/*
206 * backwards compatibility flags
207 */
208bc_entry bc_list[] = {
209	{ T_Bc_bugXXXX,		1	}	/* default enabled */
210};
211
212/*
213 * declare an int pointer for each flag for quick testing without
214 * walking bc_list.  If the pointer is consumed by libntp rather
215 * than ntpd, declare it in a libntp source file pointing to storage
216 * initialized with the appropriate value for other libntp clients, and
217 * redirect it to point into bc_list during ntpd startup.
218 */
219int *p_bcXXXX_enabled = &bc_list[0].enabled;
220#endif
221
222/* FUNCTION PROTOTYPES */
223
224static void init_syntax_tree(config_tree *);
225static void apply_enable_disable(attr_val_fifo *q, int enable);
226
227#ifdef FREE_CFG_T
228static void free_auth_node(config_tree *);
229static void free_all_config_trees(void);
230
231static void free_config_access(config_tree *);
232static void free_config_auth(config_tree *);
233static void free_config_fudge(config_tree *);
234static void free_config_logconfig(config_tree *);
235static void free_config_monitor(config_tree *);
236static void free_config_nic_rules(config_tree *);
237static void free_config_other_modes(config_tree *);
238static void free_config_peers(config_tree *);
239static void free_config_phone(config_tree *);
240static void free_config_reset_counters(config_tree *);
241static void free_config_rlimit(config_tree *);
242static void free_config_setvar(config_tree *);
243static void free_config_system_opts(config_tree *);
244static void free_config_tinker(config_tree *);
245static void free_config_tos(config_tree *);
246static void free_config_trap(config_tree *);
247static void free_config_ttl(config_tree *);
248static void free_config_unpeers(config_tree *);
249static void free_config_vars(config_tree *);
250
251#ifdef SIM
252static void free_config_sim(config_tree *);
253#endif
254static void destroy_address_fifo(address_fifo *);
255#define FREE_ADDRESS_FIFO(pf)			\
256	do {					\
257		destroy_address_fifo(pf);	\
258		(pf) = NULL;			\
259	} while (0)
260       void free_all_config_trees(void);	/* atexit() */
261static void free_config_tree(config_tree *ptree);
262#endif	/* FREE_CFG_T */
263
264static void destroy_restrict_node(restrict_node *my_node);
265static int is_sane_resolved_address(sockaddr_u *peeraddr, int hmode);
266static void save_and_apply_config_tree(int/*BOOL*/ from_file);
267static void destroy_int_fifo(int_fifo *);
268#define FREE_INT_FIFO(pf)			\
269	do {					\
270		destroy_int_fifo(pf);		\
271		(pf) = NULL;			\
272	} while (0)
273static void destroy_string_fifo(string_fifo *);
274#define FREE_STRING_FIFO(pf)			\
275	do {					\
276		destroy_string_fifo(pf);		\
277		(pf) = NULL;			\
278	} while (0)
279static void destroy_attr_val_fifo(attr_val_fifo *);
280#define FREE_ATTR_VAL_FIFO(pf)			\
281	do {					\
282		destroy_attr_val_fifo(pf);	\
283		(pf) = NULL;			\
284	} while (0)
285static void destroy_filegen_fifo(filegen_fifo *);
286#define FREE_FILEGEN_FIFO(pf)			\
287	do {					\
288		destroy_filegen_fifo(pf);	\
289		(pf) = NULL;			\
290	} while (0)
291static void destroy_restrict_fifo(restrict_fifo *);
292#define FREE_RESTRICT_FIFO(pf)			\
293	do {					\
294		destroy_restrict_fifo(pf);	\
295		(pf) = NULL;			\
296	} while (0)
297static void destroy_setvar_fifo(setvar_fifo *);
298#define FREE_SETVAR_FIFO(pf)			\
299	do {					\
300		destroy_setvar_fifo(pf);	\
301		(pf) = NULL;			\
302	} while (0)
303static void destroy_addr_opts_fifo(addr_opts_fifo *);
304#define FREE_ADDR_OPTS_FIFO(pf)			\
305	do {					\
306		destroy_addr_opts_fifo(pf);	\
307		(pf) = NULL;			\
308	} while (0)
309
310static void config_logconfig(config_tree *);
311static void config_monitor(config_tree *);
312static void config_rlimit(config_tree *);
313static void config_system_opts(config_tree *);
314static void config_tinker(config_tree *);
315static int  config_tos_clock(config_tree *);
316static void config_tos(config_tree *);
317static void config_vars(config_tree *);
318
319#ifdef SIM
320static sockaddr_u *get_next_address(address_node *addr);
321static void config_sim(config_tree *);
322static void config_ntpdsim(config_tree *);
323#else	/* !SIM follows */
324static void config_ntpd(config_tree *, int/*BOOL*/ input_from_file);
325static void config_other_modes(config_tree *);
326static void config_auth(config_tree *);
327static void config_access(config_tree *);
328static void config_mdnstries(config_tree *);
329static void config_phone(config_tree *);
330static void config_setvar(config_tree *);
331static void config_ttl(config_tree *);
332static void config_trap(config_tree *);
333static void config_fudge(config_tree *);
334static void config_peers(config_tree *);
335static void config_unpeers(config_tree *);
336static void config_nic_rules(config_tree *, int/*BOOL*/ input_from_file);
337static void config_reset_counters(config_tree *);
338static u_char get_correct_host_mode(int token);
339static int peerflag_bits(peer_node *);
340#endif	/* !SIM */
341
342#ifdef WORKER
343static void peer_name_resolved(int, int, void *, const char *, const char *,
344			const struct addrinfo *,
345			const struct addrinfo *);
346static void unpeer_name_resolved(int, int, void *, const char *, const char *,
347			  const struct addrinfo *,
348			  const struct addrinfo *);
349static void trap_name_resolved(int, int, void *, const char *, const char *,
350			const struct addrinfo *,
351			const struct addrinfo *);
352#endif
353
354enum gnn_type {
355	t_UNK,		/* Unknown */
356	t_REF,		/* Refclock */
357	t_MSK		/* Network Mask */
358};
359
360static void ntpd_set_tod_using(const char *);
361static char * normal_dtoa(double);
362static u_int32 get_pfxmatch(const char **, struct masks *);
363static u_int32 get_match(const char *, struct masks *);
364static u_int32 get_logmask(const char *);
365static int/*BOOL*/ is_refclk_addr(const address_node * addr);
366
367static void	appendstr(char *, size_t, char *);
368
369
370#ifndef SIM
371static int getnetnum(const char *num, sockaddr_u *addr, int complain,
372		     enum gnn_type a_type);
373
374#endif
375
376#if defined(__GNUC__) /* this covers CLANG, too */
377static void  __attribute__((noreturn,format(printf,1,2))) fatal_error(const char *fmt, ...)
378#elif defined(_MSC_VER)
379static void __declspec(noreturn) fatal_error(const char *fmt, ...)
380#else
381static void fatal_error(const char *fmt, ...)
382#endif
383{
384	va_list va;
385
386	va_start(va, fmt);
387	mvsyslog(LOG_EMERG, fmt, va);
388	va_end(va);
389	_exit(1);
390}
391
392
393/* FUNCTIONS FOR INITIALIZATION
394 * ----------------------------
395 */
396
397#ifdef FREE_CFG_T
398static void
399free_auth_node(
400	config_tree *ptree
401	)
402{
403	if (ptree->auth.keys) {
404		free(ptree->auth.keys);
405		ptree->auth.keys = NULL;
406	}
407
408	if (ptree->auth.keysdir) {
409		free(ptree->auth.keysdir);
410		ptree->auth.keysdir = NULL;
411	}
412
413	if (ptree->auth.ntp_signd_socket) {
414		free(ptree->auth.ntp_signd_socket);
415		ptree->auth.ntp_signd_socket = NULL;
416	}
417}
418#endif /* DEBUG */
419
420
421static void
422init_syntax_tree(
423	config_tree *ptree
424	)
425{
426	ZERO(*ptree);
427	ptree->mdnstries = 5;
428}
429
430
431#ifdef FREE_CFG_T
432static void
433free_all_config_trees(void)
434{
435	config_tree *ptree;
436	config_tree *pnext;
437
438	ptree = cfg_tree_history;
439
440	while (ptree != NULL) {
441		pnext = ptree->link;
442		free_config_tree(ptree);
443		ptree = pnext;
444	}
445}
446
447
448static void
449free_config_tree(
450	config_tree *ptree
451	)
452{
453#if defined(_MSC_VER) && defined (_DEBUG)
454	_CrtCheckMemory();
455#endif
456
457	if (ptree->source.value.s != NULL)
458		free(ptree->source.value.s);
459
460	free_config_other_modes(ptree);
461	free_config_auth(ptree);
462	free_config_tos(ptree);
463	free_config_monitor(ptree);
464	free_config_access(ptree);
465	free_config_tinker(ptree);
466	free_config_rlimit(ptree);
467	free_config_system_opts(ptree);
468	free_config_logconfig(ptree);
469	free_config_phone(ptree);
470	free_config_setvar(ptree);
471	free_config_ttl(ptree);
472	free_config_trap(ptree);
473	free_config_fudge(ptree);
474	free_config_vars(ptree);
475	free_config_peers(ptree);
476	free_config_unpeers(ptree);
477	free_config_nic_rules(ptree);
478	free_config_reset_counters(ptree);
479#ifdef SIM
480	free_config_sim(ptree);
481#endif
482	free_auth_node(ptree);
483
484	free(ptree);
485
486#if defined(_MSC_VER) && defined (_DEBUG)
487	_CrtCheckMemory();
488#endif
489}
490#endif /* FREE_CFG_T */
491
492
493#ifdef SAVECONFIG
494/* Dump all trees */
495int
496dump_all_config_trees(
497	FILE *df,
498	int comment
499	)
500{
501	config_tree *	cfg_ptr;
502	int		return_value;
503
504	return_value = 0;
505	for (cfg_ptr = cfg_tree_history;
506	     cfg_ptr != NULL;
507	     cfg_ptr = cfg_ptr->link)
508		return_value |= dump_config_tree(cfg_ptr, df, comment);
509
510	return return_value;
511}
512
513
514/* The config dumper */
515int
516dump_config_tree(
517	config_tree *ptree,
518	FILE *df,
519	int comment
520	)
521{
522	peer_node *peern;
523	unpeer_node *unpeern;
524	attr_val *atrv;
525	address_node *addr;
526	address_node *peer_addr;
527	address_node *fudge_addr;
528	filegen_node *fgen_node;
529	restrict_node *rest_node;
530	addr_opts_node *addr_opts;
531	setvar_node *setv_node;
532	nic_rule_node *rule_node;
533	int_node *i_n;
534	int_node *flag_tok_fifo;
535	int_node *counter_set;
536	string_node *str_node;
537
538	const char *s = NULL;
539	char *s1;
540	char *s2;
541	char timestamp[80];
542	int enable;
543
544	DPRINTF(1, ("dump_config_tree(%p)\n", ptree));
545
546	if (comment) {
547		if (!strftime(timestamp, sizeof(timestamp),
548			      "%Y-%m-%d %H:%M:%S",
549			      localtime(&ptree->timestamp)))
550			timestamp[0] = '\0';
551
552		fprintf(df, "# %s %s %s\n",
553			timestamp,
554			(CONF_SOURCE_NTPQ == ptree->source.attr)
555			    ? "ntpq remote config from"
556			    : "startup configuration file",
557			ptree->source.value.s);
558	}
559
560	/*
561	 * For options without documentation we just output the name
562	 * and its data value
563	 */
564	atrv = HEAD_PFIFO(ptree->vars);
565	for ( ; atrv != NULL; atrv = atrv->link) {
566		switch (atrv->type) {
567#ifdef DEBUG
568		default:
569			fprintf(df, "\n# dump error:\n"
570				"# unknown vars type %d (%s) for %s\n",
571				atrv->type, token_name(atrv->type),
572				token_name(atrv->attr));
573			break;
574#endif
575		case T_Double:
576			fprintf(df, "%s %s\n", keyword(atrv->attr),
577				normal_dtoa(atrv->value.d));
578			break;
579
580		case T_Integer:
581			fprintf(df, "%s %d\n", keyword(atrv->attr),
582				atrv->value.i);
583			break;
584
585		case T_String:
586			fprintf(df, "%s \"%s\"", keyword(atrv->attr),
587				atrv->value.s);
588			if (T_Driftfile == atrv->attr &&
589			    atrv->link != NULL &&
590			    T_WanderThreshold == atrv->link->attr) {
591				atrv = atrv->link;
592				fprintf(df, " %s\n",
593					normal_dtoa(atrv->value.d));
594			} else {
595				fprintf(df, "\n");
596			}
597			break;
598		}
599	}
600
601	atrv = HEAD_PFIFO(ptree->logconfig);
602	if (atrv != NULL) {
603		fprintf(df, "logconfig");
604		for ( ; atrv != NULL; atrv = atrv->link)
605			fprintf(df, " %c%s", atrv->attr, atrv->value.s);
606		fprintf(df, "\n");
607	}
608
609	if (ptree->stats_dir)
610		fprintf(df, "statsdir \"%s\"\n", ptree->stats_dir);
611
612	i_n = HEAD_PFIFO(ptree->stats_list);
613	if (i_n != NULL) {
614		fprintf(df, "statistics");
615		for ( ; i_n != NULL; i_n = i_n->link)
616			fprintf(df, " %s", keyword(i_n->i));
617		fprintf(df, "\n");
618	}
619
620	fgen_node = HEAD_PFIFO(ptree->filegen_opts);
621	for ( ; fgen_node != NULL; fgen_node = fgen_node->link) {
622		atrv = HEAD_PFIFO(fgen_node->options);
623		if (atrv != NULL) {
624			fprintf(df, "filegen %s",
625				keyword(fgen_node->filegen_token));
626			for ( ; atrv != NULL; atrv = atrv->link) {
627				switch (atrv->attr) {
628#ifdef DEBUG
629				default:
630					fprintf(df, "\n# dump error:\n"
631						"# unknown filegen option token %s\n"
632						"filegen %s",
633						token_name(atrv->attr),
634						keyword(fgen_node->filegen_token));
635					break;
636#endif
637				case T_File:
638					fprintf(df, " file %s",
639						atrv->value.s);
640					break;
641
642				case T_Type:
643					fprintf(df, " type %s",
644						keyword(atrv->value.i));
645					break;
646
647				case T_Flag:
648					fprintf(df, " %s",
649						keyword(atrv->value.i));
650					break;
651				}
652			}
653			fprintf(df, "\n");
654		}
655	}
656
657	atrv = HEAD_PFIFO(ptree->auth.crypto_cmd_list);
658	if (atrv != NULL) {
659		fprintf(df, "crypto");
660		for ( ; atrv != NULL; atrv = atrv->link) {
661			fprintf(df, " %s %s", keyword(atrv->attr),
662				atrv->value.s);
663		}
664		fprintf(df, "\n");
665	}
666
667	if (ptree->auth.revoke != 0)
668		fprintf(df, "revoke %d\n", ptree->auth.revoke);
669
670	if (ptree->auth.keysdir != NULL)
671		fprintf(df, "keysdir \"%s\"\n", ptree->auth.keysdir);
672
673	if (ptree->auth.keys != NULL)
674		fprintf(df, "keys \"%s\"\n", ptree->auth.keys);
675
676	atrv = HEAD_PFIFO(ptree->auth.trusted_key_list);
677	if (atrv != NULL) {
678		fprintf(df, "trustedkey");
679		for ( ; atrv != NULL; atrv = atrv->link) {
680			if (T_Integer == atrv->type)
681				fprintf(df, " %d", atrv->value.i);
682			else if (T_Intrange == atrv->type)
683				fprintf(df, " (%d ... %d)",
684					atrv->value.r.first,
685					atrv->value.r.last);
686#ifdef DEBUG
687			else
688				fprintf(df, "\n# dump error:\n"
689					"# unknown trustedkey attr type %d\n"
690					"trustedkey", atrv->type);
691#endif
692		}
693		fprintf(df, "\n");
694	}
695
696	if (ptree->auth.control_key)
697		fprintf(df, "controlkey %d\n", ptree->auth.control_key);
698
699	if (ptree->auth.request_key)
700		fprintf(df, "requestkey %d\n", ptree->auth.request_key);
701
702	/* dump enable list, then disable list */
703	for (enable = 1; enable >= 0; enable--) {
704		atrv = (enable)
705			   ? HEAD_PFIFO(ptree->enable_opts)
706			   : HEAD_PFIFO(ptree->disable_opts);
707		if (atrv != NULL) {
708			fprintf(df, "%s", (enable)
709					? "enable"
710					: "disable");
711			for ( ; atrv != NULL; atrv = atrv->link)
712				fprintf(df, " %s",
713					keyword(atrv->value.i));
714			fprintf(df, "\n");
715		}
716	}
717
718	atrv = HEAD_PFIFO(ptree->orphan_cmds);
719	if (atrv != NULL) {
720		fprintf(df, "tos");
721		for ( ; atrv != NULL; atrv = atrv->link) {
722			switch (atrv->type) {
723#ifdef DEBUG
724			default:
725				fprintf(df, "\n# dump error:\n"
726					"# unknown tos attr type %d %s\n"
727					"tos", atrv->type,
728					token_name(atrv->type));
729				break;
730#endif
731			case T_Integer:
732				if (atrv->attr == T_Basedate) {
733					struct calendar jd;
734					ntpcal_rd_to_date(&jd, atrv->value.i + DAY_NTP_STARTS);
735					fprintf(df, " %s \"%04hu-%02hu-%02hu\"",
736						keyword(atrv->attr), jd.year,
737						(u_short)jd.month,
738						(u_short)jd.monthday);
739				} else {
740					fprintf(df, " %s %d",
741					keyword(atrv->attr),
742					atrv->value.i);
743				}
744				break;
745
746			case T_Double:
747				fprintf(df, " %s %s",
748					keyword(atrv->attr),
749					normal_dtoa(atrv->value.d));
750				break;
751			}
752		}
753		fprintf(df, "\n");
754	}
755
756	atrv = HEAD_PFIFO(ptree->rlimit);
757	if (atrv != NULL) {
758		fprintf(df, "rlimit");
759		for ( ; atrv != NULL; atrv = atrv->link) {
760			INSIST(T_Integer == atrv->type);
761			fprintf(df, " %s %d", keyword(atrv->attr),
762				atrv->value.i);
763		}
764		fprintf(df, "\n");
765	}
766
767	atrv = HEAD_PFIFO(ptree->tinker);
768	if (atrv != NULL) {
769		fprintf(df, "tinker");
770		for ( ; atrv != NULL; atrv = atrv->link) {
771			INSIST(T_Double == atrv->type);
772			fprintf(df, " %s %s", keyword(atrv->attr),
773				normal_dtoa(atrv->value.d));
774		}
775		fprintf(df, "\n");
776	}
777
778	if (ptree->broadcastclient)
779		fprintf(df, "broadcastclient\n");
780
781	peern = HEAD_PFIFO(ptree->peers);
782	for ( ; peern != NULL; peern = peern->link) {
783		addr = peern->addr;
784		fprintf(df, "%s", keyword(peern->host_mode));
785		switch (addr->type) {
786#ifdef DEBUG
787		default:
788			fprintf(df, "# dump error:\n"
789				"# unknown peer family %d for:\n"
790				"%s", addr->type,
791				keyword(peern->host_mode));
792			break;
793#endif
794		case AF_UNSPEC:
795			break;
796
797		case AF_INET:
798			fprintf(df, " -4");
799			break;
800
801		case AF_INET6:
802			fprintf(df, " -6");
803			break;
804		}
805		fprintf(df, " %s", addr->address);
806
807		if (peern->minpoll != 0)
808			fprintf(df, " minpoll %u", peern->minpoll);
809
810		if (peern->maxpoll != 0)
811			fprintf(df, " maxpoll %u", peern->maxpoll);
812
813		if (peern->ttl != 0) {
814			if (strlen(addr->address) > 8
815			    && !memcmp(addr->address, "127.127.", 8))
816				fprintf(df, " mode %u", peern->ttl);
817			else
818				fprintf(df, " ttl %u", peern->ttl);
819		}
820
821		if (peern->peerversion != NTP_VERSION)
822			fprintf(df, " version %u", peern->peerversion);
823
824		if (peern->peerkey != 0)
825			fprintf(df, " key %u", peern->peerkey);
826
827		if (peern->group != NULL)
828			fprintf(df, " ident \"%s\"", peern->group);
829
830		atrv = HEAD_PFIFO(peern->peerflags);
831		for ( ; atrv != NULL; atrv = atrv->link) {
832			INSIST(T_Flag == atrv->attr);
833			INSIST(T_Integer == atrv->type);
834			fprintf(df, " %s", keyword(atrv->value.i));
835		}
836
837		fprintf(df, "\n");
838
839		addr_opts = HEAD_PFIFO(ptree->fudge);
840		for ( ; addr_opts != NULL; addr_opts = addr_opts->link) {
841			peer_addr = peern->addr;
842			fudge_addr = addr_opts->addr;
843
844			s1 = peer_addr->address;
845			s2 = fudge_addr->address;
846
847			if (strcmp(s1, s2))
848				continue;
849
850			fprintf(df, "fudge %s", s1);
851
852			for (atrv = HEAD_PFIFO(addr_opts->options);
853			     atrv != NULL;
854			     atrv = atrv->link) {
855
856				switch (atrv->type) {
857#ifdef DEBUG
858				default:
859					fprintf(df, "\n# dump error:\n"
860						"# unknown fudge atrv->type %d\n"
861						"fudge %s", atrv->type,
862						s1);
863					break;
864#endif
865				case T_Double:
866					fprintf(df, " %s %s",
867						keyword(atrv->attr),
868						normal_dtoa(atrv->value.d));
869					break;
870
871				case T_Integer:
872					fprintf(df, " %s %d",
873						keyword(atrv->attr),
874						atrv->value.i);
875					break;
876
877				case T_String:
878					fprintf(df, " %s %s",
879						keyword(atrv->attr),
880						atrv->value.s);
881					break;
882				}
883			}
884			fprintf(df, "\n");
885		}
886	}
887
888	addr = HEAD_PFIFO(ptree->manycastserver);
889	if (addr != NULL) {
890		fprintf(df, "manycastserver");
891		for ( ; addr != NULL; addr = addr->link)
892			fprintf(df, " %s", addr->address);
893		fprintf(df, "\n");
894	}
895
896	addr = HEAD_PFIFO(ptree->multicastclient);
897	if (addr != NULL) {
898		fprintf(df, "multicastclient");
899		for ( ; addr != NULL; addr = addr->link)
900			fprintf(df, " %s", addr->address);
901		fprintf(df, "\n");
902	}
903
904
905	for (unpeern = HEAD_PFIFO(ptree->unpeers);
906	     unpeern != NULL;
907	     unpeern = unpeern->link)
908		fprintf(df, "unpeer %s\n", unpeern->addr->address);
909
910	atrv = HEAD_PFIFO(ptree->mru_opts);
911	if (atrv != NULL) {
912		fprintf(df, "mru");
913		for ( ;	atrv != NULL; atrv = atrv->link)
914			fprintf(df, " %s %d", keyword(atrv->attr),
915				atrv->value.i);
916		fprintf(df, "\n");
917	}
918
919	atrv = HEAD_PFIFO(ptree->discard_opts);
920	if (atrv != NULL) {
921		fprintf(df, "discard");
922		for ( ;	atrv != NULL; atrv = atrv->link)
923			fprintf(df, " %s %d", keyword(atrv->attr),
924				atrv->value.i);
925		fprintf(df, "\n");
926	}
927
928	for (rest_node = HEAD_PFIFO(ptree->restrict_opts);
929	     rest_node != NULL;
930	     rest_node = rest_node->link) {
931		int is_default = 0;
932
933		if (NULL == rest_node->addr) {
934			s = "default";
935			/* Don't need to set is_default=1 here */
936			flag_tok_fifo = HEAD_PFIFO(rest_node->flag_tok_fifo);
937			for ( ; flag_tok_fifo != NULL; flag_tok_fifo = flag_tok_fifo->link) {
938				if (T_Source == flag_tok_fifo->i) {
939					s = "source";
940					break;
941				}
942			}
943		} else {
944			const char *ap = rest_node->addr->address;
945			const char *mp = "";
946
947			if (rest_node->mask)
948				mp = rest_node->mask->address;
949
950			if (   rest_node->addr->type == AF_INET
951			    && !strcmp(ap, "0.0.0.0")
952			    && !strcmp(mp, "0.0.0.0")) {
953				is_default = 1;
954				s = "-4 default";
955			} else if (   rest_node->mask
956				   && rest_node->mask->type == AF_INET6
957				   && !strcmp(ap, "::")
958				   && !strcmp(mp, "::")) {
959				is_default = 1;
960				s = "-6 default";
961			} else {
962				s = ap;
963			}
964		}
965		fprintf(df, "restrict %s", s);
966		if (rest_node->mask != NULL && !is_default)
967			fprintf(df, " mask %s",
968				rest_node->mask->address);
969		fprintf(df, " ippeerlimit %d", rest_node->ippeerlimit);
970		flag_tok_fifo = HEAD_PFIFO(rest_node->flag_tok_fifo);
971		for ( ; flag_tok_fifo != NULL; flag_tok_fifo = flag_tok_fifo->link)
972			if (T_Source != flag_tok_fifo->i)
973				fprintf(df, " %s", keyword(flag_tok_fifo->i));
974		fprintf(df, "\n");
975	}
976
977	rule_node = HEAD_PFIFO(ptree->nic_rules);
978	for ( ; rule_node != NULL; rule_node = rule_node->link) {
979		fprintf(df, "interface %s %s\n",
980			keyword(rule_node->action),
981			(rule_node->match_class)
982			    ? keyword(rule_node->match_class)
983			    : rule_node->if_name);
984	}
985
986	str_node = HEAD_PFIFO(ptree->phone);
987	if (str_node != NULL) {
988		fprintf(df, "phone");
989		for ( ; str_node != NULL; str_node = str_node->link)
990			fprintf(df, " \"%s\"", str_node->s);
991		fprintf(df, "\n");
992	}
993
994	setv_node = HEAD_PFIFO(ptree->setvar);
995	for ( ; setv_node != NULL; setv_node = setv_node->link) {
996		s1 = quote_if_needed(setv_node->var);
997		s2 = quote_if_needed(setv_node->val);
998		fprintf(df, "setvar %s = %s", s1, s2);
999		free(s1);
1000		free(s2);
1001		if (setv_node->isdefault)
1002			fprintf(df, " default");
1003		fprintf(df, "\n");
1004	}
1005
1006	i_n = HEAD_PFIFO(ptree->ttl);
1007	if (i_n != NULL) {
1008		fprintf(df, "ttl");
1009		for( ; i_n != NULL; i_n = i_n->link)
1010			fprintf(df, " %d", i_n->i);
1011		fprintf(df, "\n");
1012	}
1013
1014	addr_opts = HEAD_PFIFO(ptree->trap);
1015	for ( ; addr_opts != NULL; addr_opts = addr_opts->link) {
1016		addr = addr_opts->addr;
1017		fprintf(df, "trap %s", addr->address);
1018		atrv = HEAD_PFIFO(addr_opts->options);
1019		for ( ; atrv != NULL; atrv = atrv->link) {
1020			switch (atrv->attr) {
1021#ifdef DEBUG
1022			default:
1023				fprintf(df, "\n# dump error:\n"
1024					"# unknown trap token %d\n"
1025					"trap %s", atrv->attr,
1026					addr->address);
1027				break;
1028#endif
1029			case T_Port:
1030				fprintf(df, " port %d", atrv->value.i);
1031				break;
1032
1033			case T_Interface:
1034				fprintf(df, " interface %s",
1035					atrv->value.s);
1036				break;
1037			}
1038		}
1039		fprintf(df, "\n");
1040	}
1041
1042	counter_set = HEAD_PFIFO(ptree->reset_counters);
1043	if (counter_set != NULL) {
1044		fprintf(df, "reset");
1045		for ( ; counter_set != NULL;
1046		     counter_set = counter_set->link)
1047			fprintf(df, " %s", keyword(counter_set->i));
1048		fprintf(df, "\n");
1049	}
1050
1051	return 0;
1052}
1053#endif	/* SAVECONFIG */
1054
1055
1056
1057/* generic fifo routines for structs linked by 1st member */
1058void *
1059append_gen_fifo(
1060	void *fifo,
1061	void *entry
1062	)
1063{
1064	gen_fifo *pf;
1065	gen_node *pe;
1066
1067	pf = fifo;
1068	pe = entry;
1069	if (NULL == pf)
1070		pf = emalloc_zero(sizeof(*pf));
1071	else
1072		CHECK_FIFO_CONSISTENCY(*pf);
1073	if (pe != NULL)
1074		LINK_FIFO(*pf, pe, link);
1075	CHECK_FIFO_CONSISTENCY(*pf);
1076
1077	return pf;
1078}
1079
1080
1081void *
1082concat_gen_fifos(
1083	void *first,
1084	void *second
1085	)
1086{
1087	gen_fifo *pf1;
1088	gen_fifo *pf2;
1089
1090	pf1 = first;
1091	pf2 = second;
1092	if (NULL == pf1)
1093		return pf2;
1094	if (NULL == pf2)
1095		return pf1;
1096
1097	CONCAT_FIFO(*pf1, *pf2, link);
1098	free(pf2);
1099
1100	return pf1;
1101}
1102
1103void*
1104destroy_gen_fifo(
1105	void        *fifo,
1106	fifo_deleter func
1107	)
1108{
1109	any_node *	np  = NULL;
1110	any_node_fifo *	pf1 = fifo;
1111
1112	if (pf1 != NULL) {
1113		if (!func)
1114			func = free;
1115		for (;;) {
1116			UNLINK_FIFO(np, *pf1, link);
1117			if (np == NULL)
1118				break;
1119			(*func)(np);
1120		}
1121		free(pf1);
1122	}
1123	return NULL;
1124}
1125
1126/* FUNCTIONS FOR CREATING NODES ON THE SYNTAX TREE
1127 * -----------------------------------------------
1128 */
1129
1130void
1131destroy_attr_val(
1132	attr_val *	av
1133	)
1134{
1135	if (av) {
1136		if (T_String == av->type)
1137			free(av->value.s);
1138		free(av);
1139	}
1140}
1141
1142attr_val *
1143create_attr_dval(
1144	int attr,
1145	double value
1146	)
1147{
1148	attr_val *my_val;
1149
1150	my_val = emalloc_zero(sizeof(*my_val));
1151	my_val->attr = attr;
1152	my_val->value.d = value;
1153	my_val->type = T_Double;
1154
1155	return my_val;
1156}
1157
1158
1159attr_val *
1160create_attr_ival(
1161	int attr,
1162	int value
1163	)
1164{
1165	attr_val *my_val;
1166
1167	my_val = emalloc_zero(sizeof(*my_val));
1168	my_val->attr = attr;
1169	my_val->value.i = value;
1170	my_val->type = T_Integer;
1171
1172	return my_val;
1173}
1174
1175
1176attr_val *
1177create_attr_uval(
1178	int	attr,
1179	u_int	value
1180	)
1181{
1182	attr_val *my_val;
1183
1184	my_val = emalloc_zero(sizeof(*my_val));
1185	my_val->attr = attr;
1186	my_val->value.u = value;
1187	my_val->type = T_U_int;
1188
1189	return my_val;
1190}
1191
1192
1193attr_val *
1194create_attr_rangeval(
1195	int	attr,
1196	int	first,
1197	int	last
1198	)
1199{
1200	attr_val *my_val;
1201
1202	my_val = emalloc_zero(sizeof(*my_val));
1203	my_val->attr = attr;
1204	my_val->value.r.first = first;
1205	my_val->value.r.last = last;
1206	my_val->type = T_Intrange;
1207
1208	return my_val;
1209}
1210
1211
1212attr_val *
1213create_attr_sval(
1214	int attr,
1215	const char *s
1216	)
1217{
1218	attr_val *my_val;
1219
1220	my_val = emalloc_zero(sizeof(*my_val));
1221	my_val->attr = attr;
1222	if (NULL == s)			/* free() hates NULL */
1223		s = estrdup("");
1224	my_val->value.s = _UC(s);
1225	my_val->type = T_String;
1226
1227	return my_val;
1228}
1229
1230
1231int_node *
1232create_int_node(
1233	int val
1234	)
1235{
1236	int_node *i_n;
1237
1238	i_n = emalloc_zero(sizeof(*i_n));
1239	i_n->i = val;
1240
1241	return i_n;
1242}
1243
1244
1245string_node *
1246create_string_node(
1247	char *str
1248	)
1249{
1250	string_node *sn;
1251
1252	sn = emalloc_zero(sizeof(*sn));
1253	sn->s = str;
1254
1255	return sn;
1256}
1257
1258
1259address_node *
1260create_address_node(
1261	char *	addr,
1262	int	type
1263	)
1264{
1265	address_node *my_node;
1266
1267	REQUIRE(NULL != addr);
1268	REQUIRE(AF_INET == type || AF_INET6 == type || AF_UNSPEC == type);
1269	my_node = emalloc_zero(sizeof(*my_node));
1270	my_node->address = addr;
1271	my_node->type = (u_short)type;
1272
1273	return my_node;
1274}
1275
1276
1277void
1278destroy_address_node(
1279	address_node *my_node
1280	)
1281{
1282	if (NULL == my_node)
1283		return;
1284	REQUIRE(NULL != my_node->address);
1285
1286	free(my_node->address);
1287	free(my_node);
1288}
1289
1290
1291peer_node *
1292create_peer_node(
1293	int		hmode,
1294	address_node *	addr,
1295	attr_val_fifo *	options
1296	)
1297{
1298	peer_node *my_node;
1299	attr_val *option;
1300	int freenode;
1301	int errflag = 0;
1302
1303	my_node = emalloc_zero(sizeof(*my_node));
1304
1305	/* Initialize node values to default */
1306	my_node->peerversion = NTP_VERSION;
1307
1308	/* Now set the node to the read values */
1309	my_node->host_mode = hmode;
1310	my_node->addr = addr;
1311
1312	/*
1313	 * the options FIFO mixes items that will be saved in the
1314	 * peer_node as explicit members, such as minpoll, and
1315	 * those that are moved intact to the peer_node's peerflags
1316	 * FIFO.  The options FIFO is consumed and reclaimed here.
1317	 */
1318
1319	if (options != NULL)
1320		CHECK_FIFO_CONSISTENCY(*options);
1321	while (options != NULL) {
1322		UNLINK_FIFO(option, *options, link);
1323		if (NULL == option) {
1324			free(options);
1325			break;
1326		}
1327
1328		freenode = 1;
1329		/* Check the kind of option being set */
1330		switch (option->attr) {
1331
1332		case T_Flag:
1333			APPEND_G_FIFO(my_node->peerflags, option);
1334			freenode = 0;
1335			break;
1336
1337		case T_Minpoll:
1338			if (option->value.i < NTP_MINPOLL ||
1339			    option->value.i > UCHAR_MAX) {
1340				msyslog(LOG_INFO,
1341					"minpoll: provided value (%d) is out of range [%d-%d])",
1342					option->value.i, NTP_MINPOLL,
1343					UCHAR_MAX);
1344				my_node->minpoll = NTP_MINPOLL;
1345			} else {
1346				my_node->minpoll =
1347					(u_char)option->value.u;
1348			}
1349			break;
1350
1351		case T_Maxpoll:
1352			if (option->value.i < 0 ||
1353			    option->value.i > NTP_MAXPOLL) {
1354				msyslog(LOG_INFO,
1355					"maxpoll: provided value (%d) is out of range [0-%d])",
1356					option->value.i, NTP_MAXPOLL);
1357				my_node->maxpoll = NTP_MAXPOLL;
1358			} else {
1359				my_node->maxpoll =
1360					(u_char)option->value.u;
1361			}
1362			break;
1363
1364		case T_Ttl:
1365			if (is_refclk_addr(addr)) {
1366				msyslog(LOG_ERR, "'ttl' does not apply for refclocks");
1367				errflag = 1;
1368			} else if (option->value.u >= MAX_TTL) {
1369				msyslog(LOG_ERR, "ttl: invalid argument");
1370				errflag = 1;
1371			} else {
1372				my_node->ttl = (u_char)option->value.u;
1373			}
1374			break;
1375
1376		case T_Mode:
1377			if (is_refclk_addr(addr)) {
1378				my_node->ttl = option->value.u;
1379			} else {
1380				msyslog(LOG_ERR, "'mode' does not apply for network peers");
1381				errflag = 1;
1382			}
1383			break;
1384
1385		case T_Key:
1386			if (option->value.u >= KEYID_T_MAX) {
1387				msyslog(LOG_ERR, "key: invalid argument");
1388				errflag = 1;
1389			} else {
1390				my_node->peerkey =
1391					(keyid_t)option->value.u;
1392			}
1393			break;
1394
1395		case T_Version:
1396			if (option->value.u >= UCHAR_MAX) {
1397				msyslog(LOG_ERR, "version: invalid argument");
1398				errflag = 1;
1399			} else {
1400				my_node->peerversion =
1401					(u_char)option->value.u;
1402			}
1403			break;
1404
1405		case T_Ident:
1406			my_node->group = option->value.s;
1407			break;
1408
1409		default:
1410			msyslog(LOG_ERR,
1411				"Unknown peer/server option token %s",
1412				token_name(option->attr));
1413			errflag = 1;
1414		}
1415		if (freenode)
1416			free(option);
1417	}
1418
1419	/* Check if errors were reported. If yes, ignore the node */
1420	if (errflag) {
1421		free(my_node);
1422		my_node = NULL;
1423	}
1424
1425	return my_node;
1426}
1427
1428
1429unpeer_node *
1430create_unpeer_node(
1431	address_node *addr
1432	)
1433{
1434	unpeer_node *	my_node;
1435	u_long		u;
1436	const u_char *	pch;
1437
1438	my_node = emalloc_zero(sizeof(*my_node));
1439
1440	/*
1441	 * From the parser's perspective an association ID fits into
1442	 * its generic T_String definition of a name/address "address".
1443	 * We treat all valid 16-bit numbers as association IDs.
1444	 */
1445	for (u = 0, pch = (u_char*)addr->address; isdigit(*pch); ++pch) {
1446		/* accumulate with overflow retention */
1447		u = (10 * u + *pch - '0') | (u & 0xFF000000u);
1448	}
1449
1450	if (!*pch && u <= ASSOCID_MAX) {
1451		my_node->assocID = (associd_t)u;
1452		my_node->addr = NULL;
1453		destroy_address_node(addr);
1454	} else {
1455		my_node->assocID = 0;
1456		my_node->addr = addr;
1457	}
1458
1459	return my_node;
1460}
1461
1462filegen_node *
1463create_filegen_node(
1464	int		filegen_token,
1465	attr_val_fifo *	options
1466	)
1467{
1468	filegen_node *my_node;
1469
1470	my_node = emalloc_zero(sizeof(*my_node));
1471	my_node->filegen_token = filegen_token;
1472	my_node->options = options;
1473
1474	return my_node;
1475}
1476
1477
1478restrict_node *
1479create_restrict_node(
1480	address_node *	addr,
1481	address_node *	mask,
1482	short		ippeerlimit,
1483	int_fifo *	flag_tok_fifo,
1484	int		line_no
1485	)
1486{
1487	restrict_node *my_node;
1488
1489	my_node = emalloc_zero(sizeof(*my_node));
1490	my_node->addr = addr;
1491	my_node->mask = mask;
1492	my_node->ippeerlimit = ippeerlimit;
1493	my_node->flag_tok_fifo = flag_tok_fifo;
1494	my_node->line_no = line_no;
1495
1496	return my_node;
1497}
1498
1499
1500static void
1501destroy_restrict_node(
1502	restrict_node *my_node
1503	)
1504{
1505	/* With great care, free all the memory occupied by
1506	 * the restrict node
1507	 */
1508	destroy_address_node(my_node->addr);
1509	destroy_address_node(my_node->mask);
1510	destroy_int_fifo(my_node->flag_tok_fifo);
1511	free(my_node);
1512}
1513
1514
1515static void
1516destroy_int_fifo(
1517	int_fifo *	fifo
1518	)
1519{
1520	int_node *	i_n;
1521
1522	if (fifo != NULL) {
1523		for (;;) {
1524			UNLINK_FIFO(i_n, *fifo, link);
1525			if (i_n == NULL)
1526				break;
1527			free(i_n);
1528		}
1529		free(fifo);
1530	}
1531}
1532
1533
1534static void
1535destroy_string_fifo(
1536	string_fifo *	fifo
1537	)
1538{
1539	string_node *	sn;
1540
1541	if (fifo != NULL) {
1542		for (;;) {
1543			UNLINK_FIFO(sn, *fifo, link);
1544			if (sn == NULL)
1545				break;
1546			free(sn->s);
1547			free(sn);
1548		}
1549		free(fifo);
1550	}
1551}
1552
1553
1554static void
1555destroy_attr_val_fifo(
1556	attr_val_fifo *	av_fifo
1557	)
1558{
1559	attr_val *	av;
1560
1561	if (av_fifo != NULL) {
1562		for (;;) {
1563			UNLINK_FIFO(av, *av_fifo, link);
1564			if (av == NULL)
1565				break;
1566			destroy_attr_val(av);
1567		}
1568		free(av_fifo);
1569	}
1570}
1571
1572
1573static void
1574destroy_filegen_fifo(
1575	filegen_fifo *	fifo
1576	)
1577{
1578	filegen_node *	fg;
1579
1580	if (fifo != NULL) {
1581		for (;;) {
1582			UNLINK_FIFO(fg, *fifo, link);
1583			if (fg == NULL)
1584				break;
1585			destroy_attr_val_fifo(fg->options);
1586			free(fg);
1587		}
1588		free(fifo);
1589	}
1590}
1591
1592
1593static void
1594destroy_restrict_fifo(
1595	restrict_fifo *	fifo
1596	)
1597{
1598	restrict_node *	rn;
1599
1600	if (fifo != NULL) {
1601		for (;;) {
1602			UNLINK_FIFO(rn, *fifo, link);
1603			if (rn == NULL)
1604				break;
1605			destroy_restrict_node(rn);
1606		}
1607		free(fifo);
1608	}
1609}
1610
1611
1612static void
1613destroy_setvar_fifo(
1614	setvar_fifo *	fifo
1615	)
1616{
1617	setvar_node *	sv;
1618
1619	if (fifo != NULL) {
1620		for (;;) {
1621			UNLINK_FIFO(sv, *fifo, link);
1622			if (sv == NULL)
1623				break;
1624			free(sv->var);
1625			free(sv->val);
1626			free(sv);
1627		}
1628		free(fifo);
1629	}
1630}
1631
1632
1633static void
1634destroy_addr_opts_fifo(
1635	addr_opts_fifo *	fifo
1636	)
1637{
1638	addr_opts_node *	aon;
1639
1640	if (fifo != NULL) {
1641		for (;;) {
1642			UNLINK_FIFO(aon, *fifo, link);
1643			if (aon == NULL)
1644				break;
1645			destroy_address_node(aon->addr);
1646			destroy_attr_val_fifo(aon->options);
1647			free(aon);
1648		}
1649		free(fifo);
1650	}
1651}
1652
1653
1654setvar_node *
1655create_setvar_node(
1656	char *	var,
1657	char *	val,
1658	int	isdefault
1659	)
1660{
1661	setvar_node *	my_node;
1662	char *		pch;
1663
1664	/* do not allow = in the variable name */
1665	pch = strchr(var, '=');
1666	if (NULL != pch)
1667		*pch = '\0';
1668
1669	/* Now store the string into a setvar_node */
1670	my_node = emalloc_zero(sizeof(*my_node));
1671	my_node->var = var;
1672	my_node->val = val;
1673	my_node->isdefault = isdefault;
1674
1675	return my_node;
1676}
1677
1678
1679nic_rule_node *
1680create_nic_rule_node(
1681	int match_class,
1682	char *if_name,	/* interface name or numeric address */
1683	int action
1684	)
1685{
1686	nic_rule_node *my_node;
1687
1688	REQUIRE(match_class != 0 || if_name != NULL);
1689
1690	my_node = emalloc_zero(sizeof(*my_node));
1691	my_node->match_class = match_class;
1692	my_node->if_name = if_name;
1693	my_node->action = action;
1694
1695	return my_node;
1696}
1697
1698
1699addr_opts_node *
1700create_addr_opts_node(
1701	address_node *	addr,
1702	attr_val_fifo *	options
1703	)
1704{
1705	addr_opts_node *my_node;
1706
1707	my_node = emalloc_zero(sizeof(*my_node));
1708	my_node->addr = addr;
1709	my_node->options = options;
1710
1711	return my_node;
1712}
1713
1714
1715#ifdef SIM
1716script_info *
1717create_sim_script_info(
1718	double		duration,
1719	attr_val_fifo *	script_queue
1720	)
1721{
1722	script_info *my_info;
1723	attr_val *my_attr_val;
1724
1725	my_info = emalloc_zero(sizeof(*my_info));
1726
1727	/* Initialize Script Info with default values*/
1728	my_info->duration = duration;
1729	my_info->prop_delay = NET_DLY;
1730	my_info->proc_delay = PROC_DLY;
1731
1732	/* Traverse the script_queue and fill out non-default values */
1733
1734	for (my_attr_val = HEAD_PFIFO(script_queue);
1735	     my_attr_val != NULL;
1736	     my_attr_val = my_attr_val->link) {
1737
1738		/* Set the desired value */
1739		switch (my_attr_val->attr) {
1740
1741		case T_Freq_Offset:
1742			my_info->freq_offset = my_attr_val->value.d;
1743			break;
1744
1745		case T_Wander:
1746			my_info->wander = my_attr_val->value.d;
1747			break;
1748
1749		case T_Jitter:
1750			my_info->jitter = my_attr_val->value.d;
1751			break;
1752
1753		case T_Prop_Delay:
1754			my_info->prop_delay = my_attr_val->value.d;
1755			break;
1756
1757		case T_Proc_Delay:
1758			my_info->proc_delay = my_attr_val->value.d;
1759			break;
1760
1761		default:
1762			msyslog(LOG_ERR, "Unknown script token %d",
1763				my_attr_val->attr);
1764		}
1765	}
1766
1767	return my_info;
1768}
1769#endif	/* SIM */
1770
1771
1772#ifdef SIM
1773static sockaddr_u *
1774get_next_address(
1775	address_node *addr
1776	)
1777{
1778	const char addr_prefix[] = "192.168.0.";
1779	static int curr_addr_num = 1;
1780#define ADDR_LENGTH 16 + 1	/* room for 192.168.1.255 */
1781	char addr_string[ADDR_LENGTH];
1782	sockaddr_u *final_addr;
1783	struct addrinfo *ptr;
1784	int gai_err;
1785
1786	final_addr = emalloc(sizeof(*final_addr));
1787
1788	if (addr->type == T_String) {
1789		snprintf(addr_string, sizeof(addr_string), "%s%d",
1790			 addr_prefix, curr_addr_num++);
1791		printf("Selecting ip address %s for hostname %s\n",
1792		       addr_string, addr->address);
1793		gai_err = getaddrinfo(addr_string, "ntp", NULL, &ptr);
1794	} else {
1795		gai_err = getaddrinfo(addr->address, "ntp", NULL, &ptr);
1796	}
1797
1798	if (gai_err) {
1799		fprintf(stderr, "ERROR!! Could not get a new address\n");
1800		exit(1);
1801	}
1802	memcpy(final_addr, ptr->ai_addr, ptr->ai_addrlen);
1803	fprintf(stderr, "Successful in setting ip address of simulated server to: %s\n",
1804		stoa(final_addr));
1805	freeaddrinfo(ptr);
1806
1807	return final_addr;
1808}
1809#endif /* SIM */
1810
1811
1812#ifdef SIM
1813server_info *
1814create_sim_server(
1815	address_node *		addr,
1816	double			server_offset,
1817	script_info_fifo *	script
1818	)
1819{
1820	server_info *my_info;
1821
1822	my_info = emalloc_zero(sizeof(*my_info));
1823	my_info->server_time = server_offset;
1824	my_info->addr = get_next_address(addr);
1825	my_info->script = script;
1826	UNLINK_FIFO(my_info->curr_script, *my_info->script, link);
1827
1828	return my_info;
1829}
1830#endif	/* SIM */
1831
1832sim_node *
1833create_sim_node(
1834	attr_val_fifo *		init_opts,
1835	server_info_fifo *	servers
1836	)
1837{
1838	sim_node *my_node;
1839
1840	my_node = emalloc(sizeof(*my_node));
1841	my_node->init_opts = init_opts;
1842	my_node->servers = servers;
1843
1844	return my_node;
1845}
1846
1847
1848
1849
1850/* FUNCTIONS FOR PERFORMING THE CONFIGURATION
1851 * ------------------------------------------
1852 */
1853
1854#ifndef SIM
1855static void
1856config_other_modes(
1857	config_tree *	ptree
1858	)
1859{
1860	sockaddr_u	addr_sock;
1861	address_node *	addr_node;
1862
1863	if (ptree->broadcastclient)
1864		proto_config(PROTO_BROADCLIENT, ptree->broadcastclient,
1865			     0., NULL);
1866
1867	addr_node = HEAD_PFIFO(ptree->manycastserver);
1868	while (addr_node != NULL) {
1869		ZERO_SOCK(&addr_sock);
1870		AF(&addr_sock) = addr_node->type;
1871		if (1 == getnetnum(addr_node->address, &addr_sock, 1,
1872				   t_UNK)) {
1873			proto_config(PROTO_MULTICAST_ADD,
1874				     0, 0., &addr_sock);
1875			sys_manycastserver = 1;
1876		}
1877		addr_node = addr_node->link;
1878	}
1879
1880	/* Configure the multicast clients */
1881	addr_node = HEAD_PFIFO(ptree->multicastclient);
1882	if (addr_node != NULL) {
1883		do {
1884			ZERO_SOCK(&addr_sock);
1885			AF(&addr_sock) = addr_node->type;
1886			if (1 == getnetnum(addr_node->address,
1887					   &addr_sock, 1, t_UNK)) {
1888				proto_config(PROTO_MULTICAST_ADD, 0, 0.,
1889					     &addr_sock);
1890			}
1891			addr_node = addr_node->link;
1892		} while (addr_node != NULL);
1893		proto_config(PROTO_MULTICAST_ADD, 1, 0., NULL);
1894	}
1895}
1896#endif	/* !SIM */
1897
1898
1899#ifdef FREE_CFG_T
1900static void
1901destroy_address_fifo(
1902	address_fifo *	pfifo
1903	)
1904{
1905	address_node *	addr_node;
1906
1907	if (pfifo != NULL) {
1908		for (;;) {
1909			UNLINK_FIFO(addr_node, *pfifo, link);
1910			if (addr_node == NULL)
1911				break;
1912			destroy_address_node(addr_node);
1913		}
1914		free(pfifo);
1915	}
1916}
1917
1918
1919static void
1920free_config_other_modes(
1921	config_tree *ptree
1922	)
1923{
1924	FREE_ADDRESS_FIFO(ptree->manycastserver);
1925	FREE_ADDRESS_FIFO(ptree->multicastclient);
1926}
1927#endif	/* FREE_CFG_T */
1928
1929
1930#ifndef SIM
1931static void
1932config_auth(
1933	config_tree *ptree
1934	)
1935{
1936	attr_val *	my_val;
1937	int		first;
1938	int		last;
1939	int		i;
1940	int		count;
1941#ifdef AUTOKEY
1942	int		item;
1943#endif
1944
1945	/* Crypto Command */
1946#ifdef AUTOKEY
1947	my_val = HEAD_PFIFO(ptree->auth.crypto_cmd_list);
1948	for (; my_val != NULL; my_val = my_val->link) {
1949		switch (my_val->attr) {
1950
1951		default:
1952			fatal_error("config_auth: attr-token=%d", my_val->attr);
1953
1954		case T_Host:
1955			item = CRYPTO_CONF_PRIV;
1956			break;
1957
1958		case T_Ident:
1959			item = CRYPTO_CONF_IDENT;
1960			break;
1961
1962		case T_Pw:
1963			item = CRYPTO_CONF_PW;
1964			break;
1965
1966		case T_Randfile:
1967			item = CRYPTO_CONF_RAND;
1968			break;
1969
1970		case T_Digest:
1971			item = CRYPTO_CONF_NID;
1972			break;
1973		}
1974		crypto_config(item, my_val->value.s);
1975	}
1976#endif	/* AUTOKEY */
1977
1978	/* Keysdir Command */
1979	if (ptree->auth.keysdir) {
1980		if (keysdir != default_keysdir)
1981			free(keysdir);
1982		keysdir = estrdup(ptree->auth.keysdir);
1983	}
1984
1985
1986	/* ntp_signd_socket Command */
1987	if (ptree->auth.ntp_signd_socket) {
1988		if (ntp_signd_socket != default_ntp_signd_socket)
1989			free(ntp_signd_socket);
1990		ntp_signd_socket = estrdup(ptree->auth.ntp_signd_socket);
1991	}
1992
1993#ifdef AUTOKEY
1994	if (ptree->auth.cryptosw && !cryptosw) {
1995		crypto_setup();
1996		cryptosw = 1;
1997	}
1998#endif	/* AUTOKEY */
1999
2000	/*
2001	 * Count the number of trusted keys to preallocate storage and
2002	 * size the hash table.
2003	 */
2004	count = 0;
2005	my_val = HEAD_PFIFO(ptree->auth.trusted_key_list);
2006	for (; my_val != NULL; my_val = my_val->link) {
2007		if (T_Integer == my_val->type) {
2008			first = my_val->value.i;
2009			if (first > 1 && first <= NTP_MAXKEY)
2010				count++;
2011		} else {
2012			REQUIRE(T_Intrange == my_val->type);
2013			first = my_val->value.r.first;
2014			last = my_val->value.r.last;
2015			if (!(first > last || first < 1 ||
2016			    last > NTP_MAXKEY)) {
2017				count += 1 + last - first;
2018			}
2019		}
2020	}
2021	auth_prealloc_symkeys(count);
2022
2023	/* Keys Command */
2024	if (ptree->auth.keys)
2025		getauthkeys(ptree->auth.keys);
2026
2027	/* Control Key Command */
2028	if (ptree->auth.control_key)
2029		ctl_auth_keyid = (keyid_t)ptree->auth.control_key;
2030
2031	/* Requested Key Command */
2032	if (ptree->auth.request_key) {
2033		DPRINTF(4, ("set info_auth_keyid to %08lx\n",
2034			    (u_long) ptree->auth.request_key));
2035		info_auth_keyid = (keyid_t)ptree->auth.request_key;
2036	}
2037
2038	/* Trusted Key Command */
2039	my_val = HEAD_PFIFO(ptree->auth.trusted_key_list);
2040	for (; my_val != NULL; my_val = my_val->link) {
2041		if (T_Integer == my_val->type) {
2042			first = my_val->value.i;
2043			if (first >= 1 && first <= NTP_MAXKEY) {
2044				authtrust(first, TRUE);
2045			} else {
2046				msyslog(LOG_NOTICE,
2047					"Ignoring invalid trustedkey %d, min 1 max %d.",
2048					first, NTP_MAXKEY);
2049			}
2050		} else {
2051			first = my_val->value.r.first;
2052			last = my_val->value.r.last;
2053			if (first > last || first < 1 ||
2054			    last > NTP_MAXKEY) {
2055				msyslog(LOG_NOTICE,
2056					"Ignoring invalid trustedkey range %d ... %d, min 1 max %d.",
2057					first, last, NTP_MAXKEY);
2058			} else {
2059				for (i = first; i <= last; i++) {
2060					authtrust(i, TRUE);
2061				}
2062			}
2063		}
2064	}
2065
2066#ifdef AUTOKEY
2067	/* crypto revoke command */
2068	if (ptree->auth.revoke)
2069		sys_revoke = 1UL << ptree->auth.revoke;
2070#endif	/* AUTOKEY */
2071}
2072#endif	/* !SIM */
2073
2074
2075#ifdef FREE_CFG_T
2076static void
2077free_config_auth(
2078	config_tree *ptree
2079	)
2080{
2081	destroy_attr_val_fifo(ptree->auth.crypto_cmd_list);
2082	ptree->auth.crypto_cmd_list = NULL;
2083	destroy_attr_val_fifo(ptree->auth.trusted_key_list);
2084	ptree->auth.trusted_key_list = NULL;
2085}
2086#endif	/* FREE_CFG_T */
2087
2088
2089/* Configure low-level clock-related parameters. Return TRUE if the
2090 * clock might need adjustment like era-checking after the call, FALSE
2091 * otherwise.
2092 */
2093static int/*BOOL*/
2094config_tos_clock(
2095	config_tree *ptree
2096	)
2097{
2098	int		ret;
2099	attr_val *	tos;
2100
2101	ret = FALSE;
2102	tos = HEAD_PFIFO(ptree->orphan_cmds);
2103	for (; tos != NULL; tos = tos->link) {
2104		switch(tos->attr) {
2105
2106		default:
2107			break;
2108
2109		case T_Basedate:
2110			basedate_set_day(tos->value.i);
2111			ret = TRUE;
2112			break;
2113		}
2114	}
2115	return ret;
2116}
2117
2118static void
2119config_tos(
2120	config_tree *ptree
2121	)
2122{
2123	attr_val *	tos;
2124	int		item;
2125	double		val;
2126
2127	/* [Bug 2896] For the daemon to work properly it is essential
2128	 * that minsane < minclock <= maxclock.
2129	 *
2130	 * If either constraint is violated, the daemon will be or might
2131	 * become dysfunctional. Fixing the values is too fragile here,
2132	 * since three variables with interdependecies are involved. We
2133	 * just log an error but do not stop: This might be caused by
2134	 * remote config, and it might be fixed by remote config, too.
2135	 */
2136	int l_maxclock = sys_maxclock;
2137	int l_minclock = sys_minclock;
2138	int l_minsane  = sys_minsane;
2139
2140	/* -*- phase one: inspect / sanitize the values */
2141	tos = HEAD_PFIFO(ptree->orphan_cmds);
2142	for (; tos != NULL; tos = tos->link) {
2143		/* not all attributes are doubles (any more), so loading
2144		 * 'val' in all cases is not a good idea: It should be
2145		 * done as needed in every case processed here.
2146		 */
2147		switch(tos->attr) {
2148		default:
2149			break;
2150
2151		case T_Bcpollbstep:
2152			val = tos->value.d;
2153			if (val > 4) {
2154				msyslog(LOG_WARNING,
2155					"Using maximum bcpollbstep ceiling %d, %d requested",
2156					4, (int)val);
2157				tos->value.d = 4;
2158			} else if (val < 0) {
2159				msyslog(LOG_WARNING,
2160					"Using minimum bcpollbstep floor %d, %d requested",
2161					0, (int)val);
2162				tos->value.d = 0;
2163			}
2164			break;
2165
2166		case T_Ceiling:
2167			val = tos->value.d;
2168			if (val > STRATUM_UNSPEC - 1) {
2169				msyslog(LOG_WARNING,
2170					"Using maximum tos ceiling %d, %d requested",
2171					STRATUM_UNSPEC - 1, (int)val);
2172				tos->value.d = STRATUM_UNSPEC - 1;
2173			} else if (val < 1) {
2174				msyslog(LOG_WARNING,
2175					"Using minimum tos floor %d, %d requested",
2176					1, (int)val);
2177				tos->value.d = 1;
2178			}
2179			break;
2180
2181		case T_Minclock:
2182			val = tos->value.d;
2183			if ((int)tos->value.d < 1)
2184				tos->value.d = 1;
2185			l_minclock = (int)tos->value.d;
2186			break;
2187
2188		case T_Maxclock:
2189			val = tos->value.d;
2190			if ((int)tos->value.d < 1)
2191				tos->value.d = 1;
2192			l_maxclock = (int)tos->value.d;
2193			break;
2194
2195		case T_Minsane:
2196			val = tos->value.d;
2197			if ((int)tos->value.d < 1)
2198				tos->value.d = 1;
2199			l_minsane = (int)tos->value.d;
2200			break;
2201		}
2202	}
2203
2204	if ( ! (l_minsane < l_minclock && l_minclock <= l_maxclock)) {
2205		msyslog(LOG_ERR,
2206			"tos error: must have minsane (%d) < minclock (%d) <= maxclock (%d)"
2207			" - daemon will not operate properly!",
2208			l_minsane, l_minclock, l_maxclock);
2209	}
2210
2211	/* -*- phase two: forward the values to the protocol machinery */
2212	tos = HEAD_PFIFO(ptree->orphan_cmds);
2213	for (; tos != NULL; tos = tos->link) {
2214		switch(tos->attr) {
2215
2216		default:
2217			fatal_error("config-tos: attr-token=%d", tos->attr);
2218
2219		case T_Bcpollbstep:
2220			item = PROTO_BCPOLLBSTEP;
2221			break;
2222
2223		case T_Ceiling:
2224			item = PROTO_CEILING;
2225			break;
2226
2227		case T_Floor:
2228			item = PROTO_FLOOR;
2229			break;
2230
2231		case T_Cohort:
2232			item = PROTO_COHORT;
2233			break;
2234
2235		case T_Orphan:
2236			item = PROTO_ORPHAN;
2237			break;
2238
2239		case T_Orphanwait:
2240			item = PROTO_ORPHWAIT;
2241			break;
2242
2243		case T_Mindist:
2244			item = PROTO_MINDISP;
2245			break;
2246
2247		case T_Maxdist:
2248			item = PROTO_MAXDIST;
2249			break;
2250
2251		case T_Minclock:
2252			item = PROTO_MINCLOCK;
2253			break;
2254
2255		case T_Maxclock:
2256			item = PROTO_MAXCLOCK;
2257			break;
2258
2259		case T_Minsane:
2260			item = PROTO_MINSANE;
2261			break;
2262
2263		case T_Beacon:
2264			item = PROTO_BEACON;
2265			break;
2266
2267		case T_Basedate:
2268			continue; /* SKIP proto-config for this! */
2269		}
2270		proto_config(item, 0, tos->value.d, NULL);
2271	}
2272}
2273
2274
2275#ifdef FREE_CFG_T
2276static void
2277free_config_tos(
2278	config_tree *ptree
2279	)
2280{
2281	FREE_ATTR_VAL_FIFO(ptree->orphan_cmds);
2282}
2283#endif	/* FREE_CFG_T */
2284
2285
2286static void
2287config_monitor(
2288	config_tree *ptree
2289	)
2290{
2291	int_node *pfilegen_token;
2292	const char *filegen_string;
2293	const char *filegen_file;
2294	FILEGEN *filegen;
2295	filegen_node *my_node;
2296	attr_val *my_opts;
2297	int filegen_type;
2298	int filegen_flag;
2299
2300	/* Set the statistics directory */
2301	if (ptree->stats_dir)
2302		stats_config(STATS_STATSDIR, ptree->stats_dir);
2303
2304	/* NOTE:
2305	 * Calling filegen_get is brain dead. Doing a string
2306	 * comparison to find the relavant filegen structure is
2307	 * expensive.
2308	 *
2309	 * Through the parser, we already know which filegen is
2310	 * being specified. Hence, we should either store a
2311	 * pointer to the specified structure in the syntax tree
2312	 * or an index into a filegen array.
2313	 *
2314	 * Need to change the filegen code to reflect the above.
2315	 */
2316
2317	/* Turn on the specified statistics */
2318	pfilegen_token = HEAD_PFIFO(ptree->stats_list);
2319	for (; pfilegen_token != NULL; pfilegen_token = pfilegen_token->link) {
2320		filegen_string = keyword(pfilegen_token->i);
2321		filegen = filegen_get(filegen_string);
2322		if (NULL == filegen) {
2323			msyslog(LOG_ERR,
2324				"stats %s unrecognized",
2325				filegen_string);
2326			continue;
2327		}
2328		DPRINTF(4, ("enabling filegen for %s statistics '%s%s'\n",
2329			    filegen_string, filegen->dir,
2330			    filegen->fname));
2331		filegen_flag = filegen->flag;
2332		filegen_flag |= FGEN_FLAG_ENABLED;
2333		filegen_config(filegen, statsdir, filegen_string,
2334			       filegen->type, filegen_flag);
2335	}
2336
2337	/* Configure the statistics with the options */
2338	my_node = HEAD_PFIFO(ptree->filegen_opts);
2339	for (; my_node != NULL; my_node = my_node->link) {
2340		filegen_string = keyword(my_node->filegen_token);
2341		filegen = filegen_get(filegen_string);
2342		if (NULL == filegen) {
2343			msyslog(LOG_ERR,
2344				"filegen category '%s' unrecognized",
2345				filegen_string);
2346			continue;
2347		}
2348		filegen_file = filegen_string;
2349
2350		/* Initialize the filegen variables to their pre-configuration states */
2351		filegen_flag = filegen->flag;
2352		filegen_type = filegen->type;
2353
2354		/* "filegen ... enabled" is the default (when filegen is used) */
2355		filegen_flag |= FGEN_FLAG_ENABLED;
2356
2357		my_opts = HEAD_PFIFO(my_node->options);
2358		for (; my_opts != NULL; my_opts = my_opts->link) {
2359			switch (my_opts->attr) {
2360
2361			case T_File:
2362				filegen_file = my_opts->value.s;
2363				break;
2364
2365			case T_Type:
2366				switch (my_opts->value.i) {
2367
2368				default:
2369					fatal_error("config-monitor: type-token=%d", my_opts->value.i);
2370
2371				case T_None:
2372					filegen_type = FILEGEN_NONE;
2373					break;
2374
2375				case T_Pid:
2376					filegen_type = FILEGEN_PID;
2377					break;
2378
2379				case T_Day:
2380					filegen_type = FILEGEN_DAY;
2381					break;
2382
2383				case T_Week:
2384					filegen_type = FILEGEN_WEEK;
2385					break;
2386
2387				case T_Month:
2388					filegen_type = FILEGEN_MONTH;
2389					break;
2390
2391				case T_Year:
2392					filegen_type = FILEGEN_YEAR;
2393					break;
2394
2395				case T_Age:
2396					filegen_type = FILEGEN_AGE;
2397					break;
2398				}
2399				break;
2400
2401			case T_Flag:
2402				switch (my_opts->value.i) {
2403
2404				case T_Link:
2405					filegen_flag |= FGEN_FLAG_LINK;
2406					break;
2407
2408				case T_Nolink:
2409					filegen_flag &= ~FGEN_FLAG_LINK;
2410					break;
2411
2412				case T_Enable:
2413					filegen_flag |= FGEN_FLAG_ENABLED;
2414					break;
2415
2416				case T_Disable:
2417					filegen_flag &= ~FGEN_FLAG_ENABLED;
2418					break;
2419
2420				default:
2421					msyslog(LOG_ERR,
2422						"Unknown filegen flag token %d",
2423						my_opts->value.i);
2424					exit(1);
2425				}
2426				break;
2427
2428			default:
2429				msyslog(LOG_ERR,
2430					"Unknown filegen option token %d",
2431					my_opts->attr);
2432				exit(1);
2433			}
2434		}
2435		filegen_config(filegen, statsdir, filegen_file,
2436			       filegen_type, filegen_flag);
2437	}
2438}
2439
2440
2441#ifdef FREE_CFG_T
2442static void
2443free_config_monitor(
2444	config_tree *ptree
2445	)
2446{
2447	if (ptree->stats_dir) {
2448		free(ptree->stats_dir);
2449		ptree->stats_dir = NULL;
2450	}
2451
2452	FREE_INT_FIFO(ptree->stats_list);
2453	FREE_FILEGEN_FIFO(ptree->filegen_opts);
2454}
2455#endif	/* FREE_CFG_T */
2456
2457
2458#ifndef SIM
2459static void
2460config_access(
2461	config_tree *ptree
2462	)
2463{
2464	static int		warned_signd;
2465	attr_val *		my_opt;
2466	restrict_node *		my_node;
2467	int_node *		curr_tok_fifo;
2468	sockaddr_u		addr;
2469	sockaddr_u		mask;
2470	struct addrinfo		hints;
2471	struct addrinfo *	ai_list;
2472	struct addrinfo *	pai;
2473	int			rc;
2474	int			restrict_default;
2475	u_short			rflags;
2476	u_short			mflags;
2477	short			ippeerlimit;
2478	int			range_err;
2479	const char *		signd_warning =
2480#ifdef HAVE_NTP_SIGND
2481	    "MS-SNTP signd operations currently block ntpd degrading service to all clients.";
2482#else
2483	    "mssntp restrict bit ignored, this ntpd was configured without --enable-ntp-signd.";
2484#endif
2485
2486	/* Configure the mru options */
2487	my_opt = HEAD_PFIFO(ptree->mru_opts);
2488	for (; my_opt != NULL; my_opt = my_opt->link) {
2489
2490		range_err = FALSE;
2491
2492		switch (my_opt->attr) {
2493
2494		case T_Incalloc:
2495			if (0 <= my_opt->value.i)
2496				mru_incalloc = my_opt->value.u;
2497			else
2498				range_err = TRUE;
2499			break;
2500
2501		case T_Incmem:
2502			if (0 <= my_opt->value.i)
2503				mru_incalloc = (my_opt->value.u * 1024U)
2504						/ sizeof(mon_entry);
2505			else
2506				range_err = TRUE;
2507			break;
2508
2509		case T_Initalloc:
2510			if (0 <= my_opt->value.i)
2511				mru_initalloc = my_opt->value.u;
2512			else
2513				range_err = TRUE;
2514			break;
2515
2516		case T_Initmem:
2517			if (0 <= my_opt->value.i)
2518				mru_initalloc = (my_opt->value.u * 1024U)
2519						 / sizeof(mon_entry);
2520			else
2521				range_err = TRUE;
2522			break;
2523
2524		case T_Mindepth:
2525			if (0 <= my_opt->value.i)
2526				mru_mindepth = my_opt->value.u;
2527			else
2528				range_err = TRUE;
2529			break;
2530
2531		case T_Maxage:
2532			mru_maxage = my_opt->value.i;
2533			break;
2534
2535		case T_Maxdepth:
2536			if (0 <= my_opt->value.i)
2537				mru_maxdepth = my_opt->value.u;
2538			else
2539				mru_maxdepth = UINT_MAX;
2540			break;
2541
2542		case T_Maxmem:
2543			if (0 <= my_opt->value.i)
2544				mru_maxdepth = (my_opt->value.u * 1024U) /
2545					       sizeof(mon_entry);
2546			else
2547				mru_maxdepth = UINT_MAX;
2548			break;
2549
2550		default:
2551			msyslog(LOG_ERR,
2552				"Unknown mru option %s (%d)",
2553				keyword(my_opt->attr), my_opt->attr);
2554			exit(1);
2555		}
2556		if (range_err)
2557			msyslog(LOG_ERR,
2558				"mru %s %d out of range, ignored.",
2559				keyword(my_opt->attr), my_opt->value.i);
2560	}
2561
2562	/* Configure the discard options */
2563	my_opt = HEAD_PFIFO(ptree->discard_opts);
2564	for (; my_opt != NULL; my_opt = my_opt->link) {
2565
2566		switch (my_opt->attr) {
2567
2568		case T_Average:
2569			if (0 <= my_opt->value.i &&
2570			    my_opt->value.i <= UCHAR_MAX)
2571				ntp_minpoll = (u_char)my_opt->value.u;
2572			else
2573				msyslog(LOG_ERR,
2574					"discard average %d out of range, ignored.",
2575					my_opt->value.i);
2576			break;
2577
2578		case T_Minimum:
2579			ntp_minpkt = my_opt->value.i;
2580			break;
2581
2582		case T_Monitor:
2583			mon_age = my_opt->value.i;
2584			break;
2585
2586		default:
2587			msyslog(LOG_ERR,
2588				"Unknown discard option %s (%d)",
2589				keyword(my_opt->attr), my_opt->attr);
2590			exit(1);
2591		}
2592	}
2593
2594	/* Configure the restrict options */
2595	my_node = HEAD_PFIFO(ptree->restrict_opts);
2596
2597	for (; my_node != NULL; my_node = my_node->link) {
2598		/* Grab the ippeerlmit */
2599		ippeerlimit = my_node->ippeerlimit;
2600
2601DPRINTF(1, ("config_access: top-level node %p: ippeerlimit %d\n", my_node, ippeerlimit));
2602
2603		/* Parse the flags */
2604		rflags = 0;
2605		mflags = 0;
2606
2607		curr_tok_fifo = HEAD_PFIFO(my_node->flag_tok_fifo);
2608		for (; curr_tok_fifo != NULL; curr_tok_fifo = curr_tok_fifo->link) {
2609			switch (curr_tok_fifo->i) {
2610
2611			default:
2612				fatal_error("config_access: flag-type-token=%d", curr_tok_fifo->i);
2613
2614			case T_Ntpport:
2615				mflags |= RESM_NTPONLY;
2616				break;
2617
2618			case T_Source:
2619				mflags |= RESM_SOURCE;
2620				break;
2621
2622			case T_Flake:
2623				rflags |= RES_FLAKE;
2624				break;
2625
2626			case T_Ignore:
2627				rflags |= RES_IGNORE;
2628				break;
2629
2630			case T_Kod:
2631				rflags |= RES_KOD;
2632				break;
2633
2634			case T_Mssntp:
2635				rflags |= RES_MSSNTP;
2636				break;
2637
2638			case T_Limited:
2639				rflags |= RES_LIMITED;
2640				break;
2641
2642			case T_Lowpriotrap:
2643				rflags |= RES_LPTRAP;
2644				break;
2645
2646			case T_Nomodify:
2647				rflags |= RES_NOMODIFY;
2648				break;
2649
2650			case T_Nomrulist:
2651				rflags |= RES_NOMRULIST;
2652				break;
2653
2654			case T_Noepeer:
2655				rflags |= RES_NOEPEER;
2656				break;
2657
2658			case T_Nopeer:
2659				rflags |= RES_NOPEER;
2660				break;
2661
2662			case T_Noquery:
2663				rflags |= RES_NOQUERY;
2664				break;
2665
2666			case T_Noserve:
2667				rflags |= RES_DONTSERVE;
2668				break;
2669
2670			case T_Notrap:
2671				rflags |= RES_NOTRAP;
2672				break;
2673
2674			case T_Notrust:
2675				rflags |= RES_DONTTRUST;
2676				break;
2677
2678			case T_Version:
2679				rflags |= RES_VERSION;
2680				break;
2681			}
2682		}
2683
2684		if ((RES_MSSNTP & rflags) && !warned_signd) {
2685			warned_signd = 1;
2686			fprintf(stderr, "%s\n", signd_warning);
2687			msyslog(LOG_WARNING, "%s", signd_warning);
2688		}
2689
2690		/* It would be swell if we could identify the line number */
2691		if ((RES_KOD & rflags) && !(RES_LIMITED & rflags)) {
2692			const char *kod_where = (my_node->addr)
2693					  ? my_node->addr->address
2694					  : (mflags & RESM_SOURCE)
2695					    ? "source"
2696					    : "default";
2697			const char *kod_warn = "KOD does nothing without LIMITED.";
2698
2699			fprintf(stderr, "restrict %s: %s\n", kod_where, kod_warn);
2700			msyslog(LOG_WARNING, "restrict %s: %s", kod_where, kod_warn);
2701		}
2702
2703		ZERO_SOCK(&addr);
2704		ai_list = NULL;
2705		pai = NULL;
2706		restrict_default = 0;
2707
2708		if (NULL == my_node->addr) {
2709			ZERO_SOCK(&mask);
2710			if (!(RESM_SOURCE & mflags)) {
2711				/*
2712				 * The user specified a default rule
2713				 * without a -4 / -6 qualifier, add to
2714				 * both lists
2715				 */
2716				restrict_default = 1;
2717			} else {
2718				/* apply "restrict source ..." */
2719				DPRINTF(1, ("restrict source template ippeerlimit %d mflags %x rflags %x\n",
2720					ippeerlimit, mflags, rflags));
2721				hack_restrict(RESTRICT_FLAGS, NULL, NULL,
2722					      ippeerlimit, mflags, rflags, 0);
2723				continue;
2724			}
2725		} else {
2726			/* Resolve the specified address */
2727			AF(&addr) = (u_short)my_node->addr->type;
2728
2729			if (getnetnum(my_node->addr->address,
2730				      &addr, 1, t_UNK) != 1) {
2731				/*
2732				 * Attempt a blocking lookup.  This
2733				 * is in violation of the nonblocking
2734				 * design of ntpd's mainline code.  The
2735				 * alternative of running without the
2736				 * restriction until the name resolved
2737				 * seems worse.
2738				 * Ideally some scheme could be used for
2739				 * restrict directives in the startup
2740				 * ntp.conf to delay starting up the
2741				 * protocol machinery until after all
2742				 * restrict hosts have been resolved.
2743				 */
2744				ai_list = NULL;
2745				ZERO(hints);
2746				hints.ai_protocol = IPPROTO_UDP;
2747				hints.ai_socktype = SOCK_DGRAM;
2748				hints.ai_family = my_node->addr->type;
2749				rc = getaddrinfo(my_node->addr->address,
2750						 "ntp", &hints,
2751						 &ai_list);
2752				if (rc) {
2753					msyslog(LOG_ERR,
2754						"restrict: ignoring line %d, address/host '%s' unusable.",
2755						my_node->line_no,
2756						my_node->addr->address);
2757					continue;
2758				}
2759				INSIST(ai_list != NULL);
2760				pai = ai_list;
2761				INSIST(pai->ai_addr != NULL);
2762				INSIST(sizeof(addr) >=
2763					   pai->ai_addrlen);
2764				memcpy(&addr, pai->ai_addr,
2765				       pai->ai_addrlen);
2766				INSIST(AF_INET == AF(&addr) ||
2767					   AF_INET6 == AF(&addr));
2768			}
2769
2770			SET_HOSTMASK(&mask, AF(&addr));
2771
2772			/* Resolve the mask */
2773			if (my_node->mask) {
2774				ZERO_SOCK(&mask);
2775				AF(&mask) = my_node->mask->type;
2776				if (getnetnum(my_node->mask->address,
2777					      &mask, 1, t_MSK) != 1) {
2778					msyslog(LOG_ERR,
2779						"restrict: ignoring line %d, mask '%s' unusable.",
2780						my_node->line_no,
2781						my_node->mask->address);
2782					continue;
2783				}
2784			}
2785		}
2786
2787		/* Set the flags */
2788		if (restrict_default) {
2789			AF(&addr) = AF_INET;
2790			AF(&mask) = AF_INET;
2791			hack_restrict(RESTRICT_FLAGS, &addr, &mask,
2792				      ippeerlimit, mflags, rflags, 0);
2793			AF(&addr) = AF_INET6;
2794			AF(&mask) = AF_INET6;
2795		}
2796
2797		do {
2798			hack_restrict(RESTRICT_FLAGS, &addr, &mask,
2799				      ippeerlimit, mflags, rflags, 0);
2800			if (pai != NULL &&
2801			    NULL != (pai = pai->ai_next)) {
2802				INSIST(pai->ai_addr != NULL);
2803				INSIST(sizeof(addr) >=
2804					   pai->ai_addrlen);
2805				ZERO_SOCK(&addr);
2806				memcpy(&addr, pai->ai_addr,
2807				       pai->ai_addrlen);
2808				INSIST(AF_INET == AF(&addr) ||
2809					   AF_INET6 == AF(&addr));
2810				SET_HOSTMASK(&mask, AF(&addr));
2811			}
2812		} while (pai != NULL);
2813
2814		if (ai_list != NULL)
2815			freeaddrinfo(ai_list);
2816	}
2817}
2818#endif	/* !SIM */
2819
2820
2821#ifdef FREE_CFG_T
2822static void
2823free_config_access(
2824	config_tree *ptree
2825	)
2826{
2827	FREE_ATTR_VAL_FIFO(ptree->mru_opts);
2828	FREE_ATTR_VAL_FIFO(ptree->discard_opts);
2829	FREE_RESTRICT_FIFO(ptree->restrict_opts);
2830}
2831#endif	/* FREE_CFG_T */
2832
2833
2834static void
2835config_rlimit(
2836	config_tree *ptree
2837	)
2838{
2839	attr_val *	rlimit_av;
2840
2841	rlimit_av = HEAD_PFIFO(ptree->rlimit);
2842	for (; rlimit_av != NULL; rlimit_av = rlimit_av->link) {
2843		switch (rlimit_av->attr) {
2844
2845		default:
2846			fatal_error("config-rlimit: value-token=%d", rlimit_av->attr);
2847
2848		case T_Memlock:
2849			/* What if we HAVE_OPT(SAVECONFIGQUIT) ? */
2850			if (HAVE_OPT( SAVECONFIGQUIT )) {
2851				break;
2852			}
2853			if (rlimit_av->value.i == -1) {
2854# if defined(HAVE_MLOCKALL)
2855				if (cur_memlock != 0) {
2856					if (-1 == munlockall()) {
2857						msyslog(LOG_ERR, "munlockall() failed: %m");
2858					}
2859				}
2860				cur_memlock = 0;
2861# endif /* HAVE_MLOCKALL */
2862			} else if (rlimit_av->value.i >= 0) {
2863#if defined(RLIMIT_MEMLOCK)
2864# if defined(HAVE_MLOCKALL)
2865				if (cur_memlock != 1) {
2866					if (-1 == mlockall(MCL_CURRENT|MCL_FUTURE)) {
2867						msyslog(LOG_ERR, "mlockall() failed: %m");
2868					}
2869				}
2870# endif /* HAVE_MLOCKALL */
2871				ntp_rlimit(RLIMIT_MEMLOCK,
2872					   (rlim_t)(rlimit_av->value.i * 1024 * 1024),
2873					   1024 * 1024,
2874					   "MB");
2875				cur_memlock = 1;
2876#else
2877				/* STDERR as well would be fine... */
2878				msyslog(LOG_WARNING, "'rlimit memlock' specified but is not available on this system.");
2879#endif /* RLIMIT_MEMLOCK */
2880			} else {
2881				msyslog(LOG_WARNING, "'rlimit memlock' value of %d is unexpected!", rlimit_av->value.i);
2882			}
2883			break;
2884
2885		case T_Stacksize:
2886#if defined(RLIMIT_STACK)
2887			ntp_rlimit(RLIMIT_STACK,
2888				   (rlim_t)(rlimit_av->value.i * 4096),
2889				   4096,
2890				   "4k");
2891#else
2892			/* STDERR as well would be fine... */
2893			msyslog(LOG_WARNING, "'rlimit stacksize' specified but is not available on this system.");
2894#endif /* RLIMIT_STACK */
2895			break;
2896
2897		case T_Filenum:
2898#if defined(RLIMIT_NOFILE)
2899			ntp_rlimit(RLIMIT_NOFILE,
2900				  (rlim_t)(rlimit_av->value.i),
2901				  1,
2902				  "");
2903#else
2904			/* STDERR as well would be fine... */
2905			msyslog(LOG_WARNING, "'rlimit filenum' specified but is not available on this system.");
2906#endif /* RLIMIT_NOFILE */
2907			break;
2908
2909		}
2910	}
2911}
2912
2913
2914static void
2915config_tinker(
2916	config_tree *ptree
2917	)
2918{
2919	attr_val *	tinker;
2920	int		item;
2921
2922	tinker = HEAD_PFIFO(ptree->tinker);
2923	for (; tinker != NULL; tinker = tinker->link) {
2924		switch (tinker->attr) {
2925
2926		default:
2927			fatal_error("config_tinker: attr-token=%d", tinker->attr);
2928
2929		case T_Allan:
2930			item = LOOP_ALLAN;
2931			break;
2932
2933		case T_Dispersion:
2934			item = LOOP_PHI;
2935			break;
2936
2937		case T_Freq:
2938			item = LOOP_FREQ;
2939			break;
2940
2941		case T_Huffpuff:
2942			item = LOOP_HUFFPUFF;
2943			break;
2944
2945		case T_Panic:
2946			item = LOOP_PANIC;
2947			break;
2948
2949		case T_Step:
2950			item = LOOP_MAX;
2951			break;
2952
2953		case T_Stepback:
2954			item = LOOP_MAX_BACK;
2955			break;
2956
2957		case T_Stepfwd:
2958			item = LOOP_MAX_FWD;
2959			break;
2960
2961		case T_Stepout:
2962			item = LOOP_MINSTEP;
2963			break;
2964
2965		case T_Tick:
2966			item = LOOP_TICK;
2967			break;
2968		}
2969		loop_config(item, tinker->value.d);
2970	}
2971}
2972
2973
2974#ifdef FREE_CFG_T
2975static void
2976free_config_rlimit(
2977	config_tree *ptree
2978	)
2979{
2980	FREE_ATTR_VAL_FIFO(ptree->rlimit);
2981}
2982
2983static void
2984free_config_tinker(
2985	config_tree *ptree
2986	)
2987{
2988	FREE_ATTR_VAL_FIFO(ptree->tinker);
2989}
2990#endif	/* FREE_CFG_T */
2991
2992
2993/*
2994 * config_nic_rules - apply interface listen/ignore/drop items
2995 */
2996#ifndef SIM
2997static void
2998config_nic_rules(
2999	config_tree *ptree,
3000	int/*BOOL*/ input_from_file
3001	)
3002{
3003	nic_rule_node *	curr_node;
3004	sockaddr_u	addr;
3005	nic_rule_match	match_type;
3006	nic_rule_action	action;
3007	char *		if_name;
3008	char *		pchSlash;
3009	int		prefixlen;
3010	int		addrbits;
3011
3012	curr_node = HEAD_PFIFO(ptree->nic_rules);
3013
3014	if (curr_node != NULL
3015	    && (HAVE_OPT( NOVIRTUALIPS ) || HAVE_OPT( INTERFACE ))) {
3016		msyslog(LOG_ERR,
3017			"interface/nic rules are not allowed with --interface (-I) or --novirtualips (-L)%s",
3018			(input_from_file) ? ", exiting" : "");
3019		if (input_from_file)
3020			exit(1);
3021		else
3022			return;
3023	}
3024
3025	for (; curr_node != NULL; curr_node = curr_node->link) {
3026		prefixlen = -1;
3027		if_name = curr_node->if_name;
3028		if (if_name != NULL)
3029			if_name = estrdup(if_name);
3030
3031		switch (curr_node->match_class) {
3032
3033		default:
3034			fatal_error("config_nic_rules: match-class-token=%d", curr_node->match_class);
3035
3036		case 0:
3037			/*
3038			 * 0 is out of range for valid token T_...
3039			 * and in a nic_rules_node indicates the
3040			 * interface descriptor is either a name or
3041			 * address, stored in if_name in either case.
3042			 */
3043			INSIST(if_name != NULL);
3044			pchSlash = strchr(if_name, '/');
3045			if (pchSlash != NULL)
3046				*pchSlash = '\0';
3047			if (is_ip_address(if_name, AF_UNSPEC, &addr)) {
3048				match_type = MATCH_IFADDR;
3049				if (pchSlash != NULL
3050				    && 1 == sscanf(pchSlash + 1, "%d",
3051					    &prefixlen)) {
3052					addrbits = 8 *
3053					    SIZEOF_INADDR(AF(&addr));
3054					prefixlen = max(-1, prefixlen);
3055					prefixlen = min(prefixlen,
3056							addrbits);
3057				}
3058			} else {
3059				match_type = MATCH_IFNAME;
3060				if (pchSlash != NULL)
3061					*pchSlash = '/';
3062			}
3063			break;
3064
3065		case T_All:
3066			match_type = MATCH_ALL;
3067			break;
3068
3069		case T_Ipv4:
3070			match_type = MATCH_IPV4;
3071			break;
3072
3073		case T_Ipv6:
3074			match_type = MATCH_IPV6;
3075			break;
3076
3077		case T_Wildcard:
3078			match_type = MATCH_WILDCARD;
3079			break;
3080		}
3081
3082		switch (curr_node->action) {
3083
3084		default:
3085			fatal_error("config_nic_rules: action-token=%d", curr_node->action);
3086
3087		case T_Listen:
3088			action = ACTION_LISTEN;
3089			break;
3090
3091		case T_Ignore:
3092			action = ACTION_IGNORE;
3093			break;
3094
3095		case T_Drop:
3096			action = ACTION_DROP;
3097			break;
3098		}
3099
3100		add_nic_rule(match_type, if_name, prefixlen,
3101			     action);
3102		timer_interfacetimeout(current_time + 2);
3103		if (if_name != NULL)
3104			free(if_name);
3105	}
3106}
3107#endif	/* !SIM */
3108
3109
3110#ifdef FREE_CFG_T
3111static void
3112free_config_nic_rules(
3113	config_tree *ptree
3114	)
3115{
3116	nic_rule_node *curr_node;
3117
3118	if (ptree->nic_rules != NULL) {
3119		for (;;) {
3120			UNLINK_FIFO(curr_node, *ptree->nic_rules, link);
3121			if (NULL == curr_node)
3122				break;
3123			free(curr_node->if_name);
3124			free(curr_node);
3125		}
3126		free(ptree->nic_rules);
3127		ptree->nic_rules = NULL;
3128	}
3129}
3130#endif	/* FREE_CFG_T */
3131
3132
3133static void
3134apply_enable_disable(
3135	attr_val_fifo *	fifo,
3136	int		enable
3137	)
3138{
3139	attr_val *curr_tok_fifo;
3140	int option;
3141#ifdef BC_LIST_FRAMEWORK_NOT_YET_USED
3142	bc_entry *pentry;
3143#endif
3144
3145	for (curr_tok_fifo = HEAD_PFIFO(fifo);
3146	     curr_tok_fifo != NULL;
3147	     curr_tok_fifo = curr_tok_fifo->link) {
3148
3149		option = curr_tok_fifo->value.i;
3150		switch (option) {
3151
3152		default:
3153			msyslog(LOG_ERR,
3154				"can not apply enable/disable token %d, unknown",
3155				option);
3156			break;
3157
3158		case T_Auth:
3159			proto_config(PROTO_AUTHENTICATE, enable, 0., NULL);
3160			break;
3161
3162		case T_Bclient:
3163			proto_config(PROTO_BROADCLIENT, enable, 0., NULL);
3164			break;
3165
3166		case T_Calibrate:
3167			proto_config(PROTO_CAL, enable, 0., NULL);
3168			break;
3169
3170		case T_Kernel:
3171			proto_config(PROTO_KERNEL, enable, 0., NULL);
3172			break;
3173
3174		case T_Monitor:
3175			proto_config(PROTO_MONITOR, enable, 0., NULL);
3176			break;
3177
3178		case T_Mode7:
3179			proto_config(PROTO_MODE7, enable, 0., NULL);
3180			break;
3181
3182		case T_Ntp:
3183			proto_config(PROTO_NTP, enable, 0., NULL);
3184			break;
3185
3186		case T_PCEdigest:
3187			proto_config(PROTO_PCEDIGEST, enable, 0., NULL);
3188			break;
3189
3190		case T_Stats:
3191			proto_config(PROTO_FILEGEN, enable, 0., NULL);
3192			break;
3193
3194		case T_UEcrypto:
3195			proto_config(PROTO_UECRYPTO, enable, 0., NULL);
3196			break;
3197
3198		case T_UEcryptonak:
3199			proto_config(PROTO_UECRYPTONAK, enable, 0., NULL);
3200			break;
3201
3202		case T_UEdigest:
3203			proto_config(PROTO_UEDIGEST, enable, 0., NULL);
3204			break;
3205
3206#ifdef BC_LIST_FRAMEWORK_NOT_YET_USED
3207		case T_Bc_bugXXXX:
3208			pentry = bc_list;
3209			while (pentry->token) {
3210				if (pentry->token == option)
3211					break;
3212				pentry++;
3213			}
3214			if (!pentry->token) {
3215				msyslog(LOG_ERR,
3216					"compat token %d not in bc_list[]",
3217					option);
3218				continue;
3219			}
3220			pentry->enabled = enable;
3221			break;
3222#endif
3223		}
3224	}
3225}
3226
3227
3228static void
3229config_system_opts(
3230	config_tree *ptree
3231	)
3232{
3233	apply_enable_disable(ptree->enable_opts, 1);
3234	apply_enable_disable(ptree->disable_opts, 0);
3235}
3236
3237
3238#ifdef FREE_CFG_T
3239static void
3240free_config_system_opts(
3241	config_tree *ptree
3242	)
3243{
3244	FREE_ATTR_VAL_FIFO(ptree->enable_opts);
3245	FREE_ATTR_VAL_FIFO(ptree->disable_opts);
3246}
3247#endif	/* FREE_CFG_T */
3248
3249
3250static void
3251config_logconfig(
3252	config_tree *ptree
3253	)
3254{
3255	attr_val *	my_lc;
3256
3257	my_lc = HEAD_PFIFO(ptree->logconfig);
3258	for (; my_lc != NULL; my_lc = my_lc->link) {
3259		switch (my_lc->attr) {
3260
3261		case '+':
3262			ntp_syslogmask |= get_logmask(my_lc->value.s);
3263			break;
3264
3265		case '-':
3266			ntp_syslogmask &= ~get_logmask(my_lc->value.s);
3267			break;
3268
3269		case '=':
3270			ntp_syslogmask = get_logmask(my_lc->value.s);
3271			break;
3272		default:
3273			fatal_error("config-logconfig: modifier='%c'", my_lc->attr);
3274		}
3275	}
3276}
3277
3278
3279#ifdef FREE_CFG_T
3280static void
3281free_config_logconfig(
3282	config_tree *ptree
3283	)
3284{
3285	FREE_ATTR_VAL_FIFO(ptree->logconfig);
3286}
3287#endif	/* FREE_CFG_T */
3288
3289
3290#ifndef SIM
3291static void
3292config_phone(
3293	config_tree *ptree
3294	)
3295{
3296	size_t		i;
3297	string_node *	sn;
3298
3299	i = 0;
3300	sn = HEAD_PFIFO(ptree->phone);
3301	for (; sn != NULL; sn = sn->link) {
3302		/* need to leave array entry for NULL terminator */
3303		if (i < COUNTOF(sys_phone) - 1) {
3304			sys_phone[i++] = estrdup(sn->s);
3305			sys_phone[i] = NULL;
3306		} else {
3307			msyslog(LOG_INFO,
3308				"phone: Number of phone entries exceeds %zu. Ignoring phone %s...",
3309				(COUNTOF(sys_phone) - 1), sn->s);
3310		}
3311	}
3312}
3313#endif	/* !SIM */
3314
3315static void
3316config_mdnstries(
3317	config_tree *ptree
3318	)
3319{
3320#ifdef HAVE_DNSREGISTRATION
3321	extern int mdnstries;
3322	mdnstries = ptree->mdnstries;
3323#endif  /* HAVE_DNSREGISTRATION */
3324}
3325
3326#ifdef FREE_CFG_T
3327static void
3328free_config_phone(
3329	config_tree *ptree
3330	)
3331{
3332	FREE_STRING_FIFO(ptree->phone);
3333}
3334#endif	/* FREE_CFG_T */
3335
3336
3337#ifndef SIM
3338static void
3339config_setvar(
3340	config_tree *ptree
3341	)
3342{
3343	setvar_node *my_node;
3344	size_t	varlen, vallen, octets;
3345	char *	str;
3346
3347	str = NULL;
3348	my_node = HEAD_PFIFO(ptree->setvar);
3349	for (; my_node != NULL; my_node = my_node->link) {
3350		varlen = strlen(my_node->var);
3351		vallen = strlen(my_node->val);
3352		octets = varlen + vallen + 1 + 1;
3353		str = erealloc(str, octets);
3354		snprintf(str, octets, "%s=%s", my_node->var,
3355			 my_node->val);
3356		set_sys_var(str, octets, (my_node->isdefault)
3357						? DEF
3358						: 0);
3359	}
3360	if (str != NULL)
3361		free(str);
3362}
3363#endif	/* !SIM */
3364
3365
3366#ifdef FREE_CFG_T
3367static void
3368free_config_setvar(
3369	config_tree *ptree
3370	)
3371{
3372	FREE_SETVAR_FIFO(ptree->setvar);
3373}
3374#endif	/* FREE_CFG_T */
3375
3376
3377#ifndef SIM
3378static void
3379config_ttl(
3380	config_tree *ptree
3381	)
3382{
3383	size_t i = 0;
3384	int_node *curr_ttl;
3385
3386	curr_ttl = HEAD_PFIFO(ptree->ttl);
3387	for (; curr_ttl != NULL; curr_ttl = curr_ttl->link) {
3388		if (i < COUNTOF(sys_ttl))
3389			sys_ttl[i++] = (u_char)curr_ttl->i;
3390		else
3391			msyslog(LOG_INFO,
3392				"ttl: Number of TTL entries exceeds %zu. Ignoring TTL %d...",
3393				COUNTOF(sys_ttl), curr_ttl->i);
3394	}
3395	sys_ttlmax = (i) ? (i - 1) : 0;
3396}
3397#endif	/* !SIM */
3398
3399
3400#ifdef FREE_CFG_T
3401static void
3402free_config_ttl(
3403	config_tree *ptree
3404	)
3405{
3406	FREE_INT_FIFO(ptree->ttl);
3407}
3408#endif	/* FREE_CFG_T */
3409
3410
3411#ifndef SIM
3412static void
3413config_trap(
3414	config_tree *ptree
3415	)
3416{
3417	addr_opts_node *curr_trap;
3418	attr_val *curr_opt;
3419	sockaddr_u addr_sock;
3420	sockaddr_u peeraddr;
3421	struct interface *localaddr;
3422	struct addrinfo hints;
3423	char port_text[8];
3424	settrap_parms *pstp;
3425	u_short port;
3426	int err_flag;
3427	int rc;
3428
3429	/* silence warning about addr_sock potentially uninitialized */
3430	AF(&addr_sock) = AF_UNSPEC;
3431
3432	curr_trap = HEAD_PFIFO(ptree->trap);
3433	for (; curr_trap != NULL; curr_trap = curr_trap->link) {
3434		err_flag = 0;
3435		port = 0;
3436		localaddr = NULL;
3437
3438		curr_opt = HEAD_PFIFO(curr_trap->options);
3439		for (; curr_opt != NULL; curr_opt = curr_opt->link) {
3440			if (T_Port == curr_opt->attr) {
3441				if (curr_opt->value.i < 1
3442				    || curr_opt->value.i > USHRT_MAX) {
3443					msyslog(LOG_ERR,
3444						"invalid port number "
3445						"%d, trap ignored",
3446						curr_opt->value.i);
3447					err_flag = 1;
3448				}
3449				port = (u_short)curr_opt->value.i;
3450			}
3451			else if (T_Interface == curr_opt->attr) {
3452				/* Resolve the interface address */
3453				ZERO_SOCK(&addr_sock);
3454				if (getnetnum(curr_opt->value.s,
3455					      &addr_sock, 1, t_UNK) != 1) {
3456					err_flag = 1;
3457					break;
3458				}
3459
3460				localaddr = findinterface(&addr_sock);
3461
3462				if (NULL == localaddr) {
3463					msyslog(LOG_ERR,
3464						"can't find interface with address %s",
3465						stoa(&addr_sock));
3466					err_flag = 1;
3467				}
3468			}
3469		}
3470
3471		/* Now process the trap for the specified interface
3472		 * and port number
3473		 */
3474		if (!err_flag) {
3475			if (!port)
3476				port = TRAPPORT;
3477			ZERO_SOCK(&peeraddr);
3478			rc = getnetnum(curr_trap->addr->address,
3479				       &peeraddr, 1, t_UNK);
3480			if (1 != rc) {
3481#ifndef WORKER
3482				msyslog(LOG_ERR,
3483					"trap: unable to use IP address %s.",
3484					curr_trap->addr->address);
3485#else	/* WORKER follows */
3486				/*
3487				 * save context and hand it off
3488				 * for name resolution.
3489				 */
3490				ZERO(hints);
3491				hints.ai_protocol = IPPROTO_UDP;
3492				hints.ai_socktype = SOCK_DGRAM;
3493				snprintf(port_text, sizeof(port_text),
3494					 "%u", port);
3495				hints.ai_flags = Z_AI_NUMERICSERV;
3496				pstp = emalloc_zero(sizeof(*pstp));
3497				if (localaddr != NULL) {
3498					hints.ai_family = localaddr->family;
3499					pstp->ifaddr_nonnull = 1;
3500					memcpy(&pstp->ifaddr,
3501					       &localaddr->sin,
3502					       sizeof(pstp->ifaddr));
3503				}
3504				rc = getaddrinfo_sometime(
3505					curr_trap->addr->address,
3506					port_text, &hints,
3507					INITIAL_DNS_RETRY,
3508					&trap_name_resolved,
3509					pstp);
3510				if (!rc)
3511					msyslog(LOG_ERR,
3512						"config_trap: getaddrinfo_sometime(%s,%s): %m",
3513						curr_trap->addr->address,
3514						port_text);
3515#endif	/* WORKER */
3516				continue;
3517			}
3518			/* port is at same location for v4 and v6 */
3519			SET_PORT(&peeraddr, port);
3520
3521			if (NULL == localaddr)
3522				localaddr = ANY_INTERFACE_CHOOSE(&peeraddr);
3523			else
3524				AF(&peeraddr) = AF(&addr_sock);
3525
3526			if (!ctlsettrap(&peeraddr, localaddr, 0,
3527					NTP_VERSION))
3528				msyslog(LOG_ERR,
3529					"set trap %s -> %s failed.",
3530					latoa(localaddr),
3531					stoa(&peeraddr));
3532		}
3533	}
3534}
3535
3536
3537/*
3538 * trap_name_resolved()
3539 *
3540 * Callback invoked when config_trap()'s DNS lookup completes.
3541 */
3542# ifdef WORKER
3543static void
3544trap_name_resolved(
3545	int			rescode,
3546	int			gai_errno,
3547	void *			context,
3548	const char *		name,
3549	const char *		service,
3550	const struct addrinfo *	hints,
3551	const struct addrinfo *	res
3552	)
3553{
3554	settrap_parms *pstp;
3555	struct interface *localaddr;
3556	sockaddr_u peeraddr;
3557
3558	(void)gai_errno;
3559	(void)service;
3560	(void)hints;
3561	pstp = context;
3562	if (rescode) {
3563		msyslog(LOG_ERR,
3564			"giving up resolving trap host %s: %s (%d)",
3565			name, gai_strerror(rescode), rescode);
3566		free(pstp);
3567		return;
3568	}
3569	INSIST(sizeof(peeraddr) >= res->ai_addrlen);
3570	ZERO(peeraddr);
3571	memcpy(&peeraddr, res->ai_addr, res->ai_addrlen);
3572	localaddr = NULL;
3573	if (pstp->ifaddr_nonnull)
3574		localaddr = findinterface(&pstp->ifaddr);
3575	if (NULL == localaddr)
3576		localaddr = ANY_INTERFACE_CHOOSE(&peeraddr);
3577	if (!ctlsettrap(&peeraddr, localaddr, 0, NTP_VERSION))
3578		msyslog(LOG_ERR, "set trap %s -> %s failed.",
3579			latoa(localaddr), stoa(&peeraddr));
3580	free(pstp);
3581}
3582# endif	/* WORKER */
3583#endif	/* !SIM */
3584
3585
3586#ifdef FREE_CFG_T
3587static void
3588free_config_trap(
3589	config_tree *ptree
3590	)
3591{
3592	FREE_ADDR_OPTS_FIFO(ptree->trap);
3593}
3594#endif	/* FREE_CFG_T */
3595
3596
3597#ifndef SIM
3598static void
3599config_fudge(
3600	config_tree *ptree
3601	)
3602{
3603	addr_opts_node *curr_fudge;
3604	attr_val *curr_opt;
3605	sockaddr_u addr_sock;
3606	address_node *addr_node;
3607	struct refclockstat clock_stat;
3608	int err_flag;
3609
3610	curr_fudge = HEAD_PFIFO(ptree->fudge);
3611	for (; curr_fudge != NULL; curr_fudge = curr_fudge->link) {
3612		err_flag = 0;
3613
3614		/* Get the reference clock address and
3615		 * ensure that it is sane
3616		 */
3617		addr_node = curr_fudge->addr;
3618		ZERO_SOCK(&addr_sock);
3619		if (getnetnum(addr_node->address, &addr_sock, 1, t_REF)
3620		    != 1) {
3621			err_flag = 1;
3622			msyslog(LOG_ERR,
3623				"unrecognized fudge reference clock address %s, line ignored",
3624				stoa(&addr_sock));
3625		}
3626
3627		if (!ISREFCLOCKADR(&addr_sock)) {
3628			err_flag = 1;
3629			msyslog(LOG_ERR,
3630				"inappropriate address %s for the fudge command, line ignored",
3631				stoa(&addr_sock));
3632		}
3633
3634		/* Parse all the options to the fudge command */
3635		ZERO(clock_stat);
3636		curr_opt = HEAD_PFIFO(curr_fudge->options);
3637		for (; curr_opt != NULL; curr_opt = curr_opt->link) {
3638			switch (curr_opt->attr) {
3639
3640			case T_Time1:
3641				clock_stat.haveflags |= CLK_HAVETIME1;
3642				clock_stat.fudgetime1 = curr_opt->value.d;
3643				break;
3644
3645			case T_Time2:
3646				clock_stat.haveflags |= CLK_HAVETIME2;
3647				clock_stat.fudgetime2 = curr_opt->value.d;
3648				break;
3649
3650			case T_Stratum:
3651				clock_stat.haveflags |= CLK_HAVEVAL1;
3652				clock_stat.fudgeval1 = curr_opt->value.i;
3653				break;
3654
3655			case T_Refid:
3656				clock_stat.haveflags |= CLK_HAVEVAL2;
3657				clock_stat.fudgeval2 = 0;
3658				memcpy(&clock_stat.fudgeval2,
3659				       curr_opt->value.s,
3660				       min(strlen(curr_opt->value.s), 4));
3661				break;
3662
3663			case T_Flag1:
3664				clock_stat.haveflags |= CLK_HAVEFLAG1;
3665				if (curr_opt->value.i)
3666					clock_stat.flags |= CLK_FLAG1;
3667				else
3668					clock_stat.flags &= ~CLK_FLAG1;
3669				break;
3670
3671			case T_Flag2:
3672				clock_stat.haveflags |= CLK_HAVEFLAG2;
3673				if (curr_opt->value.i)
3674					clock_stat.flags |= CLK_FLAG2;
3675				else
3676					clock_stat.flags &= ~CLK_FLAG2;
3677				break;
3678
3679			case T_Flag3:
3680				clock_stat.haveflags |= CLK_HAVEFLAG3;
3681				if (curr_opt->value.i)
3682					clock_stat.flags |= CLK_FLAG3;
3683				else
3684					clock_stat.flags &= ~CLK_FLAG3;
3685				break;
3686
3687			case T_Flag4:
3688				clock_stat.haveflags |= CLK_HAVEFLAG4;
3689				if (curr_opt->value.i)
3690					clock_stat.flags |= CLK_FLAG4;
3691				else
3692					clock_stat.flags &= ~CLK_FLAG4;
3693				break;
3694
3695			default:
3696				msyslog(LOG_ERR,
3697					"Unexpected fudge flag %s (%d) for %s",
3698					token_name(curr_opt->attr),
3699					curr_opt->attr, stoa(&addr_sock));
3700				exit(curr_opt->attr ? curr_opt->attr : 1);
3701			}
3702		}
3703# ifdef REFCLOCK
3704		if (!err_flag)
3705			refclock_control(&addr_sock, &clock_stat, NULL);
3706# endif
3707	}
3708}
3709#endif	/* !SIM */
3710
3711
3712#ifdef FREE_CFG_T
3713static void
3714free_config_fudge(
3715	config_tree *ptree
3716	)
3717{
3718	FREE_ADDR_OPTS_FIFO(ptree->fudge);
3719}
3720#endif	/* FREE_CFG_T */
3721
3722
3723static void
3724config_vars(
3725	config_tree *ptree
3726	)
3727{
3728	attr_val *curr_var;
3729	int len;
3730
3731	curr_var = HEAD_PFIFO(ptree->vars);
3732	for (; curr_var != NULL; curr_var = curr_var->link) {
3733		/* Determine which variable to set and set it */
3734		switch (curr_var->attr) {
3735
3736		case T_Broadcastdelay:
3737			proto_config(PROTO_BROADDELAY, 0, curr_var->value.d, NULL);
3738			break;
3739
3740		case T_Tick:
3741			loop_config(LOOP_TICK, curr_var->value.d);
3742			break;
3743
3744		case T_Driftfile:
3745			if ('\0' == curr_var->value.s[0]) {
3746				stats_drift_file = 0;
3747				msyslog(LOG_INFO, "config: driftfile disabled");
3748			} else
3749				stats_config(STATS_FREQ_FILE, curr_var->value.s);
3750			break;
3751
3752		case T_Dscp:
3753			/* DSCP is in the upper 6 bits of the IP TOS/DS field */
3754			qos = curr_var->value.i << 2;
3755			break;
3756
3757		case T_Ident:
3758			sys_ident = curr_var->value.s;
3759			break;
3760
3761		case T_WanderThreshold:		/* FALLTHROUGH */
3762		case T_Nonvolatile:
3763			wander_threshold = curr_var->value.d;
3764			break;
3765
3766		case T_Leapfile:
3767			stats_config(STATS_LEAP_FILE, curr_var->value.s);
3768			break;
3769
3770#ifdef LEAP_SMEAR
3771		case T_Leapsmearinterval:
3772			leap_smear_intv = curr_var->value.i;
3773			msyslog(LOG_INFO, "config: leap smear interval %i s", leap_smear_intv);
3774			break;
3775#endif
3776
3777		case T_Pidfile:
3778			stats_config(STATS_PID_FILE, curr_var->value.s);
3779			break;
3780
3781		case T_Logfile:
3782			if (-1 == change_logfile(curr_var->value.s, TRUE))
3783				msyslog(LOG_ERR,
3784					"Cannot open logfile %s: %m",
3785					curr_var->value.s);
3786			break;
3787
3788		case T_Saveconfigdir:
3789			if (saveconfigdir != NULL)
3790				free(saveconfigdir);
3791			len = strlen(curr_var->value.s);
3792			if (0 == len) {
3793				saveconfigdir = NULL;
3794			} else if (DIR_SEP != curr_var->value.s[len - 1]
3795#ifdef SYS_WINNT	/* slash is also a dir. sep. on Windows */
3796				   && '/' != curr_var->value.s[len - 1]
3797#endif
3798				 ) {
3799					len++;
3800					saveconfigdir = emalloc(len + 1);
3801					snprintf(saveconfigdir, len + 1,
3802						 "%s%c",
3803						 curr_var->value.s,
3804						 DIR_SEP);
3805			} else {
3806					saveconfigdir = estrdup(
3807					    curr_var->value.s);
3808			}
3809			break;
3810
3811		case T_Automax:
3812#ifdef AUTOKEY
3813			sys_automax = curr_var->value.i;
3814#endif
3815			break;
3816
3817		default:
3818			msyslog(LOG_ERR,
3819				"config_vars(): unexpected token %d",
3820				curr_var->attr);
3821		}
3822	}
3823}
3824
3825
3826#ifdef FREE_CFG_T
3827static void
3828free_config_vars(
3829	config_tree *ptree
3830	)
3831{
3832	FREE_ATTR_VAL_FIFO(ptree->vars);
3833}
3834#endif	/* FREE_CFG_T */
3835
3836
3837/* Define a function to check if a resolved address is sane.
3838 * If yes, return 1, else return 0;
3839 */
3840static int
3841is_sane_resolved_address(
3842	sockaddr_u *	peeraddr,
3843	int		hmode
3844	)
3845{
3846	if (!ISREFCLOCKADR(peeraddr) && ISBADADR(peeraddr)) {
3847		msyslog(LOG_ERR,
3848			"attempt to configure invalid address %s",
3849			stoa(peeraddr));
3850		return 0;
3851	}
3852	/*
3853	 * Shouldn't be able to specify multicast
3854	 * address for server/peer!
3855	 * and unicast address for manycastclient!
3856	 */
3857	if ((T_Server == hmode || T_Peer == hmode || T_Pool == hmode)
3858	    && IS_MCAST(peeraddr)) {
3859		msyslog(LOG_ERR,
3860			"attempt to configure invalid address %s",
3861			stoa(peeraddr));
3862		return 0;
3863	}
3864	if (T_Manycastclient == hmode && !IS_MCAST(peeraddr)) {
3865		msyslog(LOG_ERR,
3866			"attempt to configure invalid address %s",
3867			stoa(peeraddr));
3868		return 0;
3869	}
3870
3871	if (IS_IPV6(peeraddr) && !ipv6_works)
3872		return 0;
3873
3874	/* Ok, all tests succeeded, now we can return 1 */
3875	return 1;
3876}
3877
3878
3879#ifndef SIM
3880static u_char
3881get_correct_host_mode(
3882	int token
3883	)
3884{
3885	switch (token) {
3886
3887	case T_Server:
3888	case T_Pool:
3889	case T_Manycastclient:
3890		return MODE_CLIENT;
3891
3892	case T_Peer:
3893		return MODE_ACTIVE;
3894
3895	case T_Broadcast:
3896		return MODE_BROADCAST;
3897
3898	default:
3899		return 0;
3900	}
3901}
3902
3903
3904/*
3905 * peerflag_bits()	get config_peers() peerflags value from a
3906 *			peer_node's queue of flag attr_val entries.
3907 */
3908static int
3909peerflag_bits(
3910	peer_node *pn
3911	)
3912{
3913	int peerflags;
3914	attr_val *option;
3915
3916	/* translate peerflags options to bits */
3917	peerflags = 0;
3918	option = HEAD_PFIFO(pn->peerflags);
3919	for (; option != NULL; option = option->link) {
3920		switch (option->value.i) {
3921
3922		default:
3923			fatal_error("peerflag_bits: option-token=%d", option->value.i);
3924
3925		case T_Autokey:
3926			peerflags |= FLAG_SKEY;
3927			break;
3928
3929		case T_Burst:
3930			peerflags |= FLAG_BURST;
3931			break;
3932
3933		case T_Iburst:
3934			peerflags |= FLAG_IBURST;
3935			break;
3936
3937		case T_Noselect:
3938			peerflags |= FLAG_NOSELECT;
3939			break;
3940
3941		case T_Preempt:
3942			peerflags |= FLAG_PREEMPT;
3943			break;
3944
3945		case T_Prefer:
3946			peerflags |= FLAG_PREFER;
3947			break;
3948
3949		case T_True:
3950			peerflags |= FLAG_TRUE;
3951			break;
3952
3953		case T_Xleave:
3954			peerflags |= FLAG_XLEAVE;
3955			break;
3956		}
3957	}
3958
3959	return peerflags;
3960}
3961
3962
3963static void
3964config_peers(
3965	config_tree *ptree
3966	)
3967{
3968	sockaddr_u		peeraddr;
3969	struct addrinfo		hints;
3970	peer_node *		curr_peer;
3971	peer_resolved_ctx *	ctx;
3972	u_char			hmode;
3973
3974	/* add servers named on the command line with iburst implied */
3975	for (;
3976	     cmdline_server_count > 0;
3977	     cmdline_server_count--, cmdline_servers++) {
3978
3979		ZERO_SOCK(&peeraddr);
3980		/*
3981		 * If we have a numeric address, we can safely
3982		 * proceed in the mainline with it.  Otherwise, hand
3983		 * the hostname off to the blocking child.
3984		 *
3985		 * Note that if we're told to add the peer here, we
3986		 * do that regardless of ippeerlimit.
3987		 */
3988		if (is_ip_address(*cmdline_servers, AF_UNSPEC,
3989				  &peeraddr)) {
3990
3991			SET_PORT(&peeraddr, NTP_PORT);
3992			if (is_sane_resolved_address(&peeraddr,
3993						     T_Server))
3994				peer_config(
3995					&peeraddr,
3996					NULL,
3997					NULL,
3998					-1,
3999					MODE_CLIENT,
4000					NTP_VERSION,
4001					0,
4002					0,
4003					FLAG_IBURST,
4004					0,
4005					0,
4006					NULL);
4007		} else {
4008			/* we have a hostname to resolve */
4009# ifdef WORKER
4010			ctx = emalloc_zero(sizeof(*ctx));
4011			ctx->family = AF_UNSPEC;
4012			ctx->host_mode = T_Server;
4013			ctx->hmode = MODE_CLIENT;
4014			ctx->version = NTP_VERSION;
4015			ctx->flags = FLAG_IBURST;
4016
4017			ZERO(hints);
4018			hints.ai_family = (u_short)ctx->family;
4019			hints.ai_socktype = SOCK_DGRAM;
4020			hints.ai_protocol = IPPROTO_UDP;
4021
4022			getaddrinfo_sometime_ex(*cmdline_servers,
4023					     "ntp", &hints,
4024					     INITIAL_DNS_RETRY,
4025					     &peer_name_resolved,
4026					     (void *)ctx, DNSFLAGS);
4027# else	/* !WORKER follows */
4028			msyslog(LOG_ERR,
4029				"hostname %s can not be used, please use IP address instead.",
4030				curr_peer->addr->address);
4031# endif
4032		}
4033	}
4034
4035	/* add associations from the configuration file */
4036	curr_peer = HEAD_PFIFO(ptree->peers);
4037	for (; curr_peer != NULL; curr_peer = curr_peer->link) {
4038		ZERO_SOCK(&peeraddr);
4039		/* Find the correct host-mode */
4040		hmode = get_correct_host_mode(curr_peer->host_mode);
4041		INSIST(hmode != 0);
4042
4043		if (T_Pool == curr_peer->host_mode) {
4044			AF(&peeraddr) = curr_peer->addr->type;
4045			peer_config(
4046				&peeraddr,
4047				curr_peer->addr->address,
4048				NULL,
4049				-1,
4050				hmode,
4051				curr_peer->peerversion,
4052				curr_peer->minpoll,
4053				curr_peer->maxpoll,
4054				peerflag_bits(curr_peer),
4055				curr_peer->ttl,
4056				curr_peer->peerkey,
4057				curr_peer->group);
4058		/*
4059		 * If we have a numeric address, we can safely
4060		 * proceed in the mainline with it.  Otherwise, hand
4061		 * the hostname off to the blocking child.
4062		 */
4063		} else if (is_ip_address(curr_peer->addr->address,
4064				  curr_peer->addr->type, &peeraddr)) {
4065
4066			SET_PORT(&peeraddr, NTP_PORT);
4067			if (is_sane_resolved_address(&peeraddr,
4068			    curr_peer->host_mode))
4069				peer_config(
4070					&peeraddr,
4071					NULL,
4072					NULL,
4073					-1,
4074					hmode,
4075					curr_peer->peerversion,
4076					curr_peer->minpoll,
4077					curr_peer->maxpoll,
4078					peerflag_bits(curr_peer),
4079					curr_peer->ttl,
4080					curr_peer->peerkey,
4081					curr_peer->group);
4082		} else {
4083			/* we have a hostname to resolve */
4084# ifdef WORKER
4085			ctx = emalloc_zero(sizeof(*ctx));
4086			ctx->family = curr_peer->addr->type;
4087			ctx->host_mode = curr_peer->host_mode;
4088			ctx->hmode = hmode;
4089			ctx->version = curr_peer->peerversion;
4090			ctx->minpoll = curr_peer->minpoll;
4091			ctx->maxpoll = curr_peer->maxpoll;
4092			ctx->flags = peerflag_bits(curr_peer);
4093			ctx->ttl = curr_peer->ttl;
4094			ctx->keyid = curr_peer->peerkey;
4095			ctx->group = curr_peer->group;
4096
4097			ZERO(hints);
4098			hints.ai_family = ctx->family;
4099			hints.ai_socktype = SOCK_DGRAM;
4100			hints.ai_protocol = IPPROTO_UDP;
4101
4102			getaddrinfo_sometime_ex(curr_peer->addr->address,
4103					     "ntp", &hints,
4104					     INITIAL_DNS_RETRY,
4105					     &peer_name_resolved, ctx,
4106					     DNSFLAGS);
4107# else	/* !WORKER follows */
4108			msyslog(LOG_ERR,
4109				"hostname %s can not be used, please use IP address instead.",
4110				curr_peer->addr->address);
4111# endif
4112		}
4113	}
4114}
4115#endif	/* !SIM */
4116
4117/*
4118 * peer_name_resolved()
4119 *
4120 * Callback invoked when config_peers()'s DNS lookup completes.
4121 */
4122#ifdef WORKER
4123static void
4124peer_name_resolved(
4125	int			rescode,
4126	int			gai_errno,
4127	void *			context,
4128	const char *		name,
4129	const char *		service,
4130	const struct addrinfo *	hints,
4131	const struct addrinfo *	res
4132	)
4133{
4134	sockaddr_u		peeraddr;
4135	peer_resolved_ctx *	ctx;
4136	u_short			af;
4137	const char *		fam_spec;
4138
4139	(void)gai_errno;
4140	(void)service;
4141	(void)hints;
4142	ctx = context;
4143
4144	DPRINTF(1, ("peer_name_resolved(%s) rescode %d\n", name, rescode));
4145
4146	if (rescode) {
4147		free(ctx);
4148		msyslog(LOG_ERR,
4149			"giving up resolving host %s: %s (%d)",
4150			name, gai_strerror(rescode), rescode);
4151		return;
4152	}
4153
4154	/* Loop to configure a single association */
4155	for (; res != NULL; res = res->ai_next) {
4156		memcpy(&peeraddr, res->ai_addr, res->ai_addrlen);
4157		if (is_sane_resolved_address(&peeraddr,
4158					     ctx->host_mode)) {
4159			NLOG(NLOG_SYSINFO) {
4160				af = ctx->family;
4161				fam_spec = (AF_INET6 == af)
4162					       ? "(AAAA) "
4163					       : (AF_INET == af)
4164						     ? "(A) "
4165						     : "";
4166				msyslog(LOG_INFO, "DNS %s %s-> %s",
4167					name, fam_spec,
4168					stoa(&peeraddr));
4169			}
4170			peer_config(
4171				&peeraddr,
4172				NULL,
4173				NULL,
4174				-1,
4175				ctx->hmode,
4176				ctx->version,
4177				ctx->minpoll,
4178				ctx->maxpoll,
4179				ctx->flags,
4180				ctx->ttl,
4181				ctx->keyid,
4182				ctx->group);
4183			break;
4184		}
4185	}
4186	free(ctx);
4187}
4188#endif	/* WORKER */
4189
4190
4191#ifdef FREE_CFG_T
4192static void
4193free_config_peers(
4194	config_tree *ptree
4195	)
4196{
4197	peer_node *curr_peer;
4198
4199	if (ptree->peers != NULL) {
4200		for (;;) {
4201			UNLINK_FIFO(curr_peer, *ptree->peers, link);
4202			if (NULL == curr_peer)
4203				break;
4204			destroy_address_node(curr_peer->addr);
4205			destroy_attr_val_fifo(curr_peer->peerflags);
4206			free(curr_peer);
4207		}
4208		free(ptree->peers);
4209		ptree->peers = NULL;
4210	}
4211}
4212#endif	/* FREE_CFG_T */
4213
4214
4215#ifndef SIM
4216static void
4217config_unpeers(
4218	config_tree *ptree
4219	)
4220{
4221	sockaddr_u		peeraddr;
4222	struct addrinfo		hints;
4223	unpeer_node *		curr_unpeer;
4224	struct peer *		p;
4225	const char *		name;
4226	int			rc;
4227
4228	curr_unpeer = HEAD_PFIFO(ptree->unpeers);
4229	for (; curr_unpeer != NULL; curr_unpeer = curr_unpeer->link) {
4230		/*
4231		 * If we have no address attached, assume we have to
4232		 * unpeer by AssocID.
4233		 */
4234		if (!curr_unpeer->addr) {
4235			p = findpeerbyassoc(curr_unpeer->assocID);
4236			if (p != NULL) {
4237				msyslog(LOG_NOTICE, "unpeered %s",
4238					stoa(&p->srcadr));
4239				peer_clear(p, "GONE");
4240				unpeer(p);
4241			}
4242			continue;
4243		}
4244
4245		ZERO(peeraddr);
4246		AF(&peeraddr) = curr_unpeer->addr->type;
4247		name = curr_unpeer->addr->address;
4248		rc = getnetnum(name, &peeraddr, 0, t_UNK);
4249		/* Do we have a numeric address? */
4250		if (rc > 0) {
4251			DPRINTF(1, ("unpeer: searching for %s\n",
4252				    stoa(&peeraddr)));
4253			p = findexistingpeer(&peeraddr, NULL, NULL, -1, 0, NULL);
4254			if (p != NULL) {
4255				msyslog(LOG_NOTICE, "unpeered %s",
4256					stoa(&peeraddr));
4257				peer_clear(p, "GONE");
4258				unpeer(p);
4259			}
4260			continue;
4261		}
4262		/*
4263		 * It's not a numeric IP address, it's a hostname.
4264		 * Check for associations with a matching hostname.
4265		 */
4266		for (p = peer_list; p != NULL; p = p->p_link)
4267			if (p->hostname != NULL)
4268				if (!strcasecmp(p->hostname, name))
4269					break;
4270		if (p != NULL) {
4271			msyslog(LOG_NOTICE, "unpeered %s", name);
4272			peer_clear(p, "GONE");
4273			unpeer(p);
4274		}
4275		/* Resolve the hostname to address(es). */
4276# ifdef WORKER
4277		ZERO(hints);
4278		hints.ai_family = curr_unpeer->addr->type;
4279		hints.ai_socktype = SOCK_DGRAM;
4280		hints.ai_protocol = IPPROTO_UDP;
4281		getaddrinfo_sometime(name, "ntp", &hints,
4282				     INITIAL_DNS_RETRY,
4283				     &unpeer_name_resolved, NULL);
4284# else	/* !WORKER follows */
4285		msyslog(LOG_ERR,
4286			"hostname %s can not be used, please use IP address instead.",
4287			name);
4288# endif
4289	}
4290}
4291#endif	/* !SIM */
4292
4293
4294/*
4295 * unpeer_name_resolved()
4296 *
4297 * Callback invoked when config_unpeers()'s DNS lookup completes.
4298 */
4299#ifdef WORKER
4300static void
4301unpeer_name_resolved(
4302	int			rescode,
4303	int			gai_errno,
4304	void *			context,
4305	const char *		name,
4306	const char *		service,
4307	const struct addrinfo *	hints,
4308	const struct addrinfo *	res
4309	)
4310{
4311	sockaddr_u	peeraddr;
4312	struct peer *	peer;
4313	u_short		af;
4314	const char *	fam_spec;
4315
4316	(void)context;
4317	(void)hints;
4318	DPRINTF(1, ("unpeer_name_resolved(%s) rescode %d\n", name, rescode));
4319
4320	if (rescode) {
4321		msyslog(LOG_ERR, "giving up resolving unpeer %s: %s (%d)",
4322			name, gai_strerror(rescode), rescode);
4323		return;
4324	}
4325	/*
4326	 * Loop through the addresses found
4327	 */
4328	for (; res != NULL; res = res->ai_next) {
4329		INSIST(res->ai_addrlen <= sizeof(peeraddr));
4330		memcpy(&peeraddr, res->ai_addr, res->ai_addrlen);
4331		DPRINTF(1, ("unpeer: searching for peer %s\n",
4332			    stoa(&peeraddr)));
4333		peer = findexistingpeer(&peeraddr, NULL, NULL, -1, 0, NULL);
4334		if (peer != NULL) {
4335			af = AF(&peeraddr);
4336			fam_spec = (AF_INET6 == af)
4337				       ? "(AAAA) "
4338				       : (AF_INET == af)
4339					     ? "(A) "
4340					     : "";
4341			msyslog(LOG_NOTICE, "unpeered %s %s-> %s", name,
4342				fam_spec, stoa(&peeraddr));
4343			peer_clear(peer, "GONE");
4344			unpeer(peer);
4345		}
4346	}
4347}
4348#endif	/* WORKER */
4349
4350
4351#ifdef FREE_CFG_T
4352static void
4353free_config_unpeers(
4354	config_tree *ptree
4355	)
4356{
4357	unpeer_node *curr_unpeer;
4358
4359	if (ptree->unpeers != NULL) {
4360		for (;;) {
4361			UNLINK_FIFO(curr_unpeer, *ptree->unpeers, link);
4362			if (NULL == curr_unpeer)
4363				break;
4364			destroy_address_node(curr_unpeer->addr);
4365			free(curr_unpeer);
4366		}
4367		free(ptree->unpeers);
4368	}
4369}
4370#endif	/* FREE_CFG_T */
4371
4372
4373#ifndef SIM
4374static void
4375config_reset_counters(
4376	config_tree *ptree
4377	)
4378{
4379	int_node *counter_set;
4380
4381	for (counter_set = HEAD_PFIFO(ptree->reset_counters);
4382	     counter_set != NULL;
4383	     counter_set = counter_set->link) {
4384		switch (counter_set->i) {
4385		default:
4386			DPRINTF(1, ("config_reset_counters %s (%d) invalid\n",
4387				    keyword(counter_set->i), counter_set->i));
4388			break;
4389
4390		case T_Allpeers:
4391			peer_all_reset();
4392			break;
4393
4394		case T_Auth:
4395			reset_auth_stats();
4396			break;
4397
4398		case T_Ctl:
4399			ctl_clr_stats();
4400			break;
4401
4402		case T_Io:
4403			io_clr_stats();
4404			break;
4405
4406		case T_Mem:
4407			peer_clr_stats();
4408			break;
4409
4410		case T_Sys:
4411			proto_clr_stats();
4412			break;
4413
4414		case T_Timer:
4415			timer_clr_stats();
4416			break;
4417		}
4418	}
4419}
4420#endif	/* !SIM */
4421
4422
4423#ifdef FREE_CFG_T
4424static void
4425free_config_reset_counters(
4426	config_tree *ptree
4427	)
4428{
4429	FREE_INT_FIFO(ptree->reset_counters);
4430}
4431#endif	/* FREE_CFG_T */
4432
4433
4434#ifdef SIM
4435static void
4436config_sim(
4437	config_tree *ptree
4438	)
4439{
4440	int i;
4441	server_info *serv_info;
4442	attr_val *init_stmt;
4443	sim_node *sim_n;
4444
4445	/* Check if a simulate block was found in the configuration code.
4446	 * If not, return an error and exit
4447	 */
4448	sim_n = HEAD_PFIFO(ptree->sim_details);
4449	if (NULL == sim_n) {
4450		fprintf(stderr, "ERROR!! I couldn't find a \"simulate\" block for configuring the simulator.\n");
4451		fprintf(stderr, "\tCheck your configuration file.\n");
4452		exit(1);
4453	}
4454
4455	/* Process the initialization statements
4456	 * -------------------------------------
4457	 */
4458	init_stmt = HEAD_PFIFO(sim_n->init_opts);
4459	for (; init_stmt != NULL; init_stmt = init_stmt->link) {
4460		switch(init_stmt->attr) {
4461
4462		case T_Beep_Delay:
4463			simulation.beep_delay = init_stmt->value.d;
4464			break;
4465
4466		case T_Sim_Duration:
4467			simulation.end_time = init_stmt->value.d;
4468			break;
4469
4470		default:
4471			fprintf(stderr,
4472				"Unknown simulator init token %d\n",
4473				init_stmt->attr);
4474			exit(1);
4475		}
4476	}
4477
4478	/* Process the server list
4479	 * -----------------------
4480	 */
4481	simulation.num_of_servers = 0;
4482	serv_info = HEAD_PFIFO(sim_n->servers);
4483	for (; serv_info != NULL; serv_info = serv_info->link)
4484		simulation.num_of_servers++;
4485	simulation.servers = eallocarray(simulation.num_of_servers,
4486				     sizeof(simulation.servers[0]));
4487
4488	i = 0;
4489	serv_info = HEAD_PFIFO(sim_n->servers);
4490	for (; serv_info != NULL; serv_info = serv_info->link) {
4491		if (NULL == serv_info) {
4492			fprintf(stderr, "Simulator server list is corrupt\n");
4493			exit(1);
4494		} else {
4495			simulation.servers[i] = *serv_info;
4496			simulation.servers[i].link = NULL;
4497			i++;
4498		}
4499	}
4500
4501	printf("Creating server associations\n");
4502	create_server_associations();
4503	fprintf(stderr,"\tServer associations successfully created!!\n");
4504}
4505
4506
4507#ifdef FREE_CFG_T
4508static void
4509free_config_sim(
4510	config_tree *ptree
4511	)
4512{
4513	sim_node *sim_n;
4514	server_info *serv_n;
4515	script_info *script_n;
4516
4517	if (NULL == ptree->sim_details)
4518		return;
4519	sim_n = HEAD_PFIFO(ptree->sim_details);
4520	free(ptree->sim_details);
4521	ptree->sim_details = NULL;
4522	if (NULL == sim_n)
4523		return;
4524
4525	FREE_ATTR_VAL_FIFO(sim_n->init_opts);
4526	for (;;) {
4527		UNLINK_FIFO(serv_n, *sim_n->servers, link);
4528		if (NULL == serv_n)
4529			break;
4530		free(serv_n->curr_script);
4531		if (serv_n->script != NULL) {
4532			for (;;) {
4533				UNLINK_FIFO(script_n, *serv_n->script,
4534					    link);
4535				if (script_n == NULL)
4536					break;
4537				free(script_n);
4538			}
4539			free(serv_n->script);
4540		}
4541		free(serv_n);
4542	}
4543	free(sim_n);
4544}
4545#endif	/* FREE_CFG_T */
4546#endif	/* SIM */
4547
4548
4549/* Define two different config functions. One for the daemon and the other for
4550 * the simulator. The simulator ignores a lot of the standard ntpd configuration
4551 * options
4552 */
4553#ifndef SIM
4554static void
4555config_ntpd(
4556	config_tree *ptree,
4557	int/*BOOL*/ input_from_files
4558	)
4559{
4560	/* [Bug 3435] check and esure clock sanity if configured from
4561	 * file and clock sanity parameters (-> basedate) are given. Do
4562	 * this ASAP, so we don't disturb the closed loop controller.
4563	 */
4564	if (input_from_files) {
4565		if (config_tos_clock(ptree))
4566			clamp_systime();
4567	}
4568
4569	config_nic_rules(ptree, input_from_files);
4570	config_monitor(ptree);
4571	config_auth(ptree);
4572	config_tos(ptree);
4573	config_access(ptree);
4574	config_tinker(ptree);
4575	config_rlimit(ptree);
4576	config_system_opts(ptree);
4577	config_logconfig(ptree);
4578	config_phone(ptree);
4579	config_mdnstries(ptree);
4580	config_setvar(ptree);
4581	config_ttl(ptree);
4582	config_vars(ptree);
4583
4584	io_open_sockets();	/* [bug 2837] dep. on config_vars() */
4585
4586	config_trap(ptree);	/* [bug 2923] dep. on io_open_sockets() */
4587	config_other_modes(ptree);
4588	config_peers(ptree);
4589	config_unpeers(ptree);
4590	config_fudge(ptree);
4591	config_reset_counters(ptree);
4592
4593#ifdef DEBUG
4594	if (debug > 1) {
4595		dump_restricts();
4596	}
4597#endif
4598
4599#ifdef TEST_BLOCKING_WORKER
4600	{
4601		struct addrinfo hints;
4602
4603		ZERO(hints);
4604		hints.ai_socktype = SOCK_STREAM;
4605		hints.ai_protocol = IPPROTO_TCP;
4606		getaddrinfo_sometime("www.cnn.com", "ntp", &hints,
4607				     INITIAL_DNS_RETRY,
4608				     gai_test_callback, (void *)1);
4609		hints.ai_family = AF_INET6;
4610		getaddrinfo_sometime("ipv6.google.com", "ntp", &hints,
4611				     INITIAL_DNS_RETRY,
4612				     gai_test_callback, (void *)0x600);
4613	}
4614#endif
4615}
4616#endif	/* !SIM */
4617
4618
4619#ifdef SIM
4620static void
4621config_ntpdsim(
4622	config_tree *ptree
4623	)
4624{
4625	printf("Configuring Simulator...\n");
4626	printf("Some ntpd-specific commands in the configuration file will be ignored.\n");
4627
4628	config_tos(ptree);
4629	config_monitor(ptree);
4630	config_tinker(ptree);
4631	if (0)
4632		config_rlimit(ptree);	/* not needed for the simulator */
4633	config_system_opts(ptree);
4634	config_logconfig(ptree);
4635	config_vars(ptree);
4636	config_sim(ptree);
4637}
4638#endif /* SIM */
4639
4640
4641/*
4642 * config_remotely() - implements ntpd side of ntpq :config
4643 */
4644void
4645config_remotely(
4646	sockaddr_u *	remote_addr
4647	)
4648{
4649	char origin[128];
4650
4651	snprintf(origin, sizeof(origin), "remote config from %s",
4652		 stoa(remote_addr));
4653	lex_init_stack(origin, NULL); /* no checking needed... */
4654	init_syntax_tree(&cfgt);
4655	yyparse();
4656	lex_drop_stack();
4657
4658	cfgt.source.attr = CONF_SOURCE_NTPQ;
4659	cfgt.timestamp = time(NULL);
4660	cfgt.source.value.s = estrdup(stoa(remote_addr));
4661
4662	DPRINTF(1, ("Finished Parsing!!\n"));
4663
4664	save_and_apply_config_tree(FALSE);
4665}
4666
4667
4668/*
4669 * getconfig() - process startup configuration file e.g /etc/ntp.conf
4670 */
4671void
4672getconfig(
4673	int	argc,
4674	char **	argv
4675	)
4676{
4677	char	line[256];
4678
4679#ifdef DEBUG
4680	atexit(free_all_config_trees);
4681#endif
4682#ifndef SYS_WINNT
4683	config_file = CONFIG_FILE;
4684#else
4685	temp = CONFIG_FILE;
4686	if (!ExpandEnvironmentStringsA(temp, config_file_storage,
4687				       sizeof(config_file_storage))) {
4688		msyslog(LOG_ERR, "ExpandEnvironmentStrings CONFIG_FILE failed: %m");
4689		exit(1);
4690	}
4691	config_file = config_file_storage;
4692
4693	temp = ALT_CONFIG_FILE;
4694	if (!ExpandEnvironmentStringsA(temp, alt_config_file_storage,
4695				       sizeof(alt_config_file_storage))) {
4696		msyslog(LOG_ERR, "ExpandEnvironmentStrings ALT_CONFIG_FILE failed: %m");
4697		exit(1);
4698	}
4699	alt_config_file = alt_config_file_storage;
4700#endif /* SYS_WINNT */
4701
4702	/*
4703	 * install a non default variable with this daemon version
4704	 */
4705	snprintf(line, sizeof(line), "daemon_version=\"%s\"", Version);
4706	set_sys_var(line, strlen(line) + 1, RO);
4707
4708	/*
4709	 * Set up for the first time step to install a variable showing
4710	 * which syscall is being used to step.
4711	 */
4712	set_tod_using = &ntpd_set_tod_using;
4713
4714	getCmdOpts(argc, argv);
4715	init_syntax_tree(&cfgt);
4716	if (
4717		!lex_init_stack(FindConfig(config_file), "r")
4718#ifdef HAVE_NETINFO
4719		/* If there is no config_file, try NetInfo. */
4720		&& check_netinfo && !(config_netinfo = get_netinfo_config())
4721#endif /* HAVE_NETINFO */
4722		) {
4723		msyslog(LOG_INFO, "getconfig: Couldn't open <%s>: %m", FindConfig(config_file));
4724#ifndef SYS_WINNT
4725		io_open_sockets();
4726
4727		return;
4728#else
4729		/* Under WinNT try alternate_config_file name, first NTP.CONF, then NTP.INI */
4730
4731		if (!lex_init_stack(FindConfig(alt_config_file), "r"))  {
4732			/*
4733			 * Broadcast clients can sometimes run without
4734			 * a configuration file.
4735			 */
4736			msyslog(LOG_INFO, "getconfig: Couldn't open <%s>: %m", FindConfig(alt_config_file));
4737			io_open_sockets();
4738
4739			return;
4740		}
4741		cfgt.source.value.s = estrdup(alt_config_file);
4742#endif	/* SYS_WINNT */
4743	} else
4744		cfgt.source.value.s = estrdup(config_file);
4745
4746
4747	/*** BULK OF THE PARSER ***/
4748#ifdef DEBUG
4749	yydebug = !!(debug >= 5);
4750#endif
4751	yyparse();
4752	lex_drop_stack();
4753
4754	DPRINTF(1, ("Finished Parsing!!\n"));
4755
4756	cfgt.source.attr = CONF_SOURCE_FILE;
4757	cfgt.timestamp = time(NULL);
4758
4759	save_and_apply_config_tree(TRUE);
4760
4761#ifdef HAVE_NETINFO
4762	if (config_netinfo)
4763		free_netinfo_config(config_netinfo);
4764#endif /* HAVE_NETINFO */
4765}
4766
4767
4768void
4769save_and_apply_config_tree(int/*BOOL*/ input_from_file)
4770{
4771	config_tree *ptree;
4772#ifndef SAVECONFIG
4773	config_tree *punlinked;
4774#endif
4775
4776	/*
4777	 * Keep all the configuration trees applied since startup in
4778	 * a list that can be used to dump the configuration back to
4779	 * a text file.
4780	 */
4781	ptree = emalloc(sizeof(*ptree));
4782	memcpy(ptree, &cfgt, sizeof(*ptree));
4783	ZERO(cfgt);
4784
4785	LINK_TAIL_SLIST(cfg_tree_history, ptree, link, config_tree);
4786
4787#ifdef SAVECONFIG
4788	if (HAVE_OPT( SAVECONFIGQUIT )) {
4789		FILE *dumpfile;
4790		int err;
4791		int dumpfailed;
4792
4793		dumpfile = fopen(OPT_ARG( SAVECONFIGQUIT ), "w");
4794		if (NULL == dumpfile) {
4795			err = errno;
4796			mfprintf(stderr,
4797				 "can not create save file %s, error %d %m\n",
4798				 OPT_ARG(SAVECONFIGQUIT), err);
4799			exit(err);
4800		}
4801
4802		dumpfailed = dump_all_config_trees(dumpfile, 0);
4803		if (dumpfailed)
4804			fprintf(stderr,
4805				"--saveconfigquit %s error %d\n",
4806				OPT_ARG( SAVECONFIGQUIT ),
4807				dumpfailed);
4808		else
4809			fprintf(stderr,
4810				"configuration saved to %s\n",
4811				OPT_ARG( SAVECONFIGQUIT ));
4812
4813		exit(dumpfailed);
4814	}
4815#endif	/* SAVECONFIG */
4816
4817	/* The actual configuration done depends on whether we are configuring the
4818	 * simulator or the daemon. Perform a check and call the appropriate
4819	 * function as needed.
4820	 */
4821
4822#ifndef SIM
4823	config_ntpd(ptree, input_from_file);
4824#else
4825	config_ntpdsim(ptree);
4826#endif
4827
4828	/*
4829	 * With configure --disable-saveconfig, there's no use keeping
4830	 * the config tree around after application, so free it.
4831	 */
4832#ifndef SAVECONFIG
4833	UNLINK_SLIST(punlinked, cfg_tree_history, ptree, link,
4834		     config_tree);
4835	INSIST(punlinked == ptree);
4836	free_config_tree(ptree);
4837#endif
4838}
4839
4840/* Hack to disambiguate 'server' statements for refclocks and network peers.
4841 * Please note the qualification 'hack'. It's just that.
4842 */
4843static int/*BOOL*/
4844is_refclk_addr(
4845	const address_node * addr
4846	)
4847{
4848	return addr && addr->address && !strncmp(addr->address, "127.127.", 6);
4849}
4850
4851static void
4852ntpd_set_tod_using(
4853	const char *which
4854	)
4855{
4856	char line[128];
4857
4858	snprintf(line, sizeof(line), "settimeofday=\"%s\"", which);
4859	set_sys_var(line, strlen(line) + 1, RO);
4860}
4861
4862
4863static char *
4864normal_dtoa(
4865	double d
4866	)
4867{
4868	char *	buf;
4869	char *	pch_e;
4870	char *	pch_nz;
4871
4872	LIB_GETBUF(buf);
4873	snprintf(buf, LIB_BUFLENGTH, "%g", d);
4874
4875	/* use lowercase 'e', strip any leading zeroes in exponent */
4876	pch_e = strchr(buf, 'e');
4877	if (NULL == pch_e) {
4878		pch_e = strchr(buf, 'E');
4879		if (NULL == pch_e)
4880			return buf;
4881		*pch_e = 'e';
4882	}
4883	pch_e++;
4884	if ('-' == *pch_e)
4885		pch_e++;
4886	pch_nz = pch_e;
4887	while ('0' == *pch_nz)
4888		pch_nz++;
4889	if (pch_nz == pch_e)
4890		return buf;
4891	strlcpy(pch_e, pch_nz, LIB_BUFLENGTH - (pch_e - buf));
4892
4893	return buf;
4894}
4895
4896
4897/* FUNCTIONS COPIED FROM THE OLDER ntp_config.c
4898 * --------------------------------------------
4899 */
4900
4901
4902/*
4903 * get_pfxmatch - find value for prefixmatch
4904 * and update char * accordingly
4905 */
4906static u_int32
4907get_pfxmatch(
4908	const char **	pstr,
4909	struct masks *	m
4910	)
4911{
4912	while (m->name != NULL) {
4913		if (strncmp(*pstr, m->name, strlen(m->name)) == 0) {
4914			*pstr += strlen(m->name);
4915			return m->mask;
4916		} else {
4917			m++;
4918		}
4919	}
4920	return 0;
4921}
4922
4923/*
4924 * get_match - find logmask value
4925 */
4926static u_int32
4927get_match(
4928	const char *	str,
4929	struct masks *	m
4930	)
4931{
4932	while (m->name != NULL) {
4933		if (strcmp(str, m->name) == 0)
4934			return m->mask;
4935		else
4936			m++;
4937	}
4938	return 0;
4939}
4940
4941/*
4942 * get_logmask - build bitmask for ntp_syslogmask
4943 */
4944static u_int32
4945get_logmask(
4946	const char *	str
4947	)
4948{
4949	const char *	t;
4950	u_int32		offset;
4951	u_int32		mask;
4952
4953	mask = get_match(str, logcfg_noclass_items);
4954	if (mask != 0)
4955		return mask;
4956
4957	t = str;
4958	offset = get_pfxmatch(&t, logcfg_class);
4959	mask   = get_match(t, logcfg_class_items);
4960
4961	if (mask)
4962		return mask << offset;
4963	else
4964		msyslog(LOG_ERR, "logconfig: '%s' not recognized - ignored",
4965			str);
4966
4967	return 0;
4968}
4969
4970
4971#ifdef HAVE_NETINFO
4972
4973/*
4974 * get_netinfo_config - find the nearest NetInfo domain with an ntp
4975 * configuration and initialize the configuration state.
4976 */
4977static struct netinfo_config_state *
4978get_netinfo_config(void)
4979{
4980	ni_status status;
4981	void *domain;
4982	ni_id config_dir;
4983	struct netinfo_config_state *config;
4984
4985	if (ni_open(NULL, ".", &domain) != NI_OK) return NULL;
4986
4987	while ((status = ni_pathsearch(domain, &config_dir, NETINFO_CONFIG_DIR)) == NI_NODIR) {
4988		void *next_domain;
4989		if (ni_open(domain, "..", &next_domain) != NI_OK) {
4990			ni_free(next_domain);
4991			break;
4992		}
4993		ni_free(domain);
4994		domain = next_domain;
4995	}
4996	if (status != NI_OK) {
4997		ni_free(domain);
4998		return NULL;
4999	}
5000
5001	config = emalloc(sizeof(*config));
5002	config->domain = domain;
5003	config->config_dir = config_dir;
5004	config->prop_index = 0;
5005	config->val_index = 0;
5006	config->val_list = NULL;
5007
5008	return config;
5009}
5010
5011
5012/*
5013 * free_netinfo_config - release NetInfo configuration state
5014 */
5015static void
5016free_netinfo_config(
5017	struct netinfo_config_state *config
5018	)
5019{
5020	ni_free(config->domain);
5021	free(config);
5022}
5023
5024
5025/*
5026 * gettokens_netinfo - return tokens from NetInfo
5027 */
5028static int
5029gettokens_netinfo (
5030	struct netinfo_config_state *config,
5031	char **tokenlist,
5032	int *ntokens
5033	)
5034{
5035	int prop_index = config->prop_index;
5036	int val_index = config->val_index;
5037	char **val_list = config->val_list;
5038
5039	/*
5040	 * Iterate through each keyword and look for a property that matches it.
5041	 */
5042  again:
5043	if (!val_list) {
5044		for (; prop_index < COUNTOF(keywords); prop_index++)
5045		{
5046			ni_namelist namelist;
5047			struct keyword current_prop = keywords[prop_index];
5048			ni_index index;
5049
5050			/*
5051			 * For each value associated in the property, we're going to return
5052			 * a separate line. We squirrel away the values in the config state
5053			 * so the next time through, we don't need to do this lookup.
5054			 */
5055			NI_INIT(&namelist);
5056			if (NI_OK == ni_lookupprop(config->domain,
5057			    &config->config_dir, current_prop.text,
5058			    &namelist)) {
5059
5060				/* Found the property, but it has no values */
5061				if (namelist.ni_namelist_len == 0) continue;
5062
5063				config->val_list =
5064				    eallocarray(
5065					(namelist.ni_namelist_len + 1),
5066					sizeof(char*));
5067				val_list = config->val_list;
5068
5069				for (index = 0;
5070				     index < namelist.ni_namelist_len;
5071				     index++) {
5072					char *value;
5073
5074					value = namelist.ni_namelist_val[index];
5075					val_list[index] = estrdup(value);
5076				}
5077				val_list[index] = NULL;
5078
5079				break;
5080			}
5081			ni_namelist_free(&namelist);
5082		}
5083		config->prop_index = prop_index;
5084	}
5085
5086	/* No list; we're done here. */
5087	if (!val_list)
5088		return CONFIG_UNKNOWN;
5089
5090	/*
5091	 * We have a list of values for the current property.
5092	 * Iterate through them and return each in order.
5093	 */
5094	if (val_list[val_index]) {
5095		int ntok = 1;
5096		int quoted = 0;
5097		char *tokens = val_list[val_index];
5098
5099		msyslog(LOG_INFO, "%s %s", keywords[prop_index].text, val_list[val_index]);
5100
5101		(const char*)tokenlist[0] = keywords[prop_index].text;
5102		for (ntok = 1; ntok < MAXTOKENS; ntok++) {
5103			tokenlist[ntok] = tokens;
5104			while (!ISEOL(*tokens) && (!ISSPACE(*tokens) || quoted))
5105				quoted ^= (*tokens++ == '"');
5106
5107			if (ISEOL(*tokens)) {
5108				*tokens = '\0';
5109				break;
5110			} else {		/* must be space */
5111				*tokens++ = '\0';
5112				while (ISSPACE(*tokens))
5113					tokens++;
5114				if (ISEOL(*tokens))
5115					break;
5116			}
5117		}
5118
5119		if (ntok == MAXTOKENS) {
5120			/* HMS: chomp it to lose the EOL? */
5121			msyslog(LOG_ERR,
5122				"gettokens_netinfo: too many tokens.  Ignoring: %s",
5123				tokens);
5124		} else {
5125			*ntokens = ntok + 1;
5126		}
5127
5128		config->val_index++;	/* HMS: Should this be in the 'else'? */
5129
5130		return keywords[prop_index].keytype;
5131	}
5132
5133	/* We're done with the current property. */
5134	prop_index = ++config->prop_index;
5135
5136	/* Free val_list and reset counters. */
5137	for (val_index = 0; val_list[val_index]; val_index++)
5138		free(val_list[val_index]);
5139	free(val_list);
5140	val_list = config->val_list = NULL;
5141	val_index = config->val_index = 0;
5142
5143	goto again;
5144}
5145#endif /* HAVE_NETINFO */
5146
5147
5148/*
5149 * getnetnum - return a net number (this is crude, but careful)
5150 *
5151 * returns 1 for success, and mysteriously, 0 for most failures, and
5152 * -1 if the address found is IPv6 and we believe IPv6 isn't working.
5153 */
5154#ifndef SIM
5155static int
5156getnetnum(
5157	const char *num,
5158	sockaddr_u *addr,
5159	int complain,
5160	enum gnn_type a_type	/* ignored */
5161	)
5162{
5163	REQUIRE(AF_UNSPEC == AF(addr) ||
5164		AF_INET == AF(addr) ||
5165		AF_INET6 == AF(addr));
5166
5167	if (!is_ip_address(num, AF(addr), addr))
5168		return 0;
5169
5170	if (IS_IPV6(addr) && !ipv6_works)
5171		return -1;
5172
5173# ifdef ISC_PLATFORM_HAVESALEN
5174	addr->sa.sa_len = SIZEOF_SOCKADDR(AF(addr));
5175# endif
5176	SET_PORT(addr, NTP_PORT);
5177
5178	DPRINTF(2, ("getnetnum given %s, got %s\n", num, stoa(addr)));
5179
5180	return 1;
5181}
5182#endif	/* !SIM */
5183
5184#if defined(HAVE_SETRLIMIT)
5185void
5186ntp_rlimit(
5187	int	rl_what,
5188	rlim_t	rl_value,
5189	int	rl_scale,
5190	const char *	rl_sstr
5191	)
5192{
5193	struct rlimit	rl;
5194
5195	switch (rl_what) {
5196# ifdef RLIMIT_MEMLOCK
5197	    case RLIMIT_MEMLOCK:
5198		if (HAVE_OPT( SAVECONFIGQUIT )) {
5199			break;
5200		}
5201		/*
5202		 * The default RLIMIT_MEMLOCK is very low on Linux systems.
5203		 * Unless we increase this limit malloc calls are likely to
5204		 * fail if we drop root privilege.  To be useful the value
5205		 * has to be larger than the largest ntpd resident set size.
5206		 */
5207		DPRINTF(2, ("ntp_rlimit: MEMLOCK: %d %s\n",
5208			(int)(rl_value / rl_scale), rl_sstr));
5209		rl.rlim_cur = rl.rlim_max = rl_value;
5210		if (setrlimit(RLIMIT_MEMLOCK, &rl) == -1)
5211			msyslog(LOG_ERR, "Cannot set RLIMIT_MEMLOCK: %m");
5212		break;
5213# endif /* RLIMIT_MEMLOCK */
5214
5215# ifdef RLIMIT_NOFILE
5216	    case RLIMIT_NOFILE:
5217		/*
5218		 * For large systems the default file descriptor limit may
5219		 * not be enough.
5220		 */
5221		DPRINTF(2, ("ntp_rlimit: NOFILE: %d %s\n",
5222			(int)(rl_value / rl_scale), rl_sstr));
5223		rl.rlim_cur = rl.rlim_max = rl_value;
5224		if (setrlimit(RLIMIT_NOFILE, &rl) == -1)
5225			msyslog(LOG_ERR, "Cannot set RLIMIT_NOFILE: %m");
5226		break;
5227# endif /* RLIMIT_NOFILE */
5228
5229# ifdef RLIMIT_STACK
5230	    case RLIMIT_STACK:
5231		/*
5232		 * Provide a way to set the stack limit to something
5233		 * smaller, so that we don't lock a lot of unused
5234		 * stack memory.
5235		 */
5236		DPRINTF(2, ("ntp_rlimit: STACK: %d %s pages\n",
5237			    (int)(rl_value / rl_scale), rl_sstr));
5238		if (-1 == getrlimit(RLIMIT_STACK, &rl)) {
5239			msyslog(LOG_ERR, "getrlimit(RLIMIT_STACK) failed: %m");
5240		} else {
5241			if (rl_value > rl.rlim_max) {
5242				msyslog(LOG_WARNING,
5243					"ntp_rlimit: using maximum allowed stack limit %lu instead of %lu.",
5244					(u_long)rl.rlim_max,
5245					(u_long)rl_value);
5246				rl_value = rl.rlim_max;
5247			}
5248			rl.rlim_cur = rl_value;
5249			if (-1 == setrlimit(RLIMIT_STACK, &rl)) {
5250				msyslog(LOG_ERR,
5251					"ntp_rlimit: Cannot set RLIMIT_STACK: %m");
5252			}
5253		}
5254		break;
5255# endif /* RLIMIT_STACK */
5256
5257	    default:
5258		    fatal_error("ntp_rlimit: unexpected RLIMIT case: %d", rl_what);
5259	}
5260}
5261#endif	/* HAVE_SETRLIMIT */
5262
5263
5264char *
5265build_iflags(u_int32 iflags)
5266{
5267	static char ifs[1024];
5268
5269	ifs[0] = '\0';
5270
5271	if (iflags & INT_UP) {
5272		iflags &= ~INT_UP;
5273		appendstr(ifs, sizeof ifs, "up");
5274	}
5275
5276	if (iflags & INT_PPP) {
5277		iflags &= ~INT_PPP;
5278		appendstr(ifs, sizeof ifs, "ppp");
5279	}
5280
5281	if (iflags & INT_LOOPBACK) {
5282		iflags &= ~INT_LOOPBACK;
5283		appendstr(ifs, sizeof ifs, "loopback");
5284	}
5285
5286	if (iflags & INT_BROADCAST) {
5287		iflags &= ~INT_BROADCAST;
5288		appendstr(ifs, sizeof ifs, "broadcast");
5289	}
5290
5291	if (iflags & INT_MULTICAST) {
5292		iflags &= ~INT_MULTICAST;
5293		appendstr(ifs, sizeof ifs, "multicast");
5294	}
5295
5296	if (iflags & INT_BCASTOPEN) {
5297		iflags &= ~INT_BCASTOPEN;
5298		appendstr(ifs, sizeof ifs, "bcastopen");
5299	}
5300
5301	if (iflags & INT_MCASTOPEN) {
5302		iflags &= ~INT_MCASTOPEN;
5303		appendstr(ifs, sizeof ifs, "mcastopen");
5304	}
5305
5306	if (iflags & INT_WILDCARD) {
5307		iflags &= ~INT_WILDCARD;
5308		appendstr(ifs, sizeof ifs, "wildcard");
5309	}
5310
5311	if (iflags & INT_MCASTIF) {
5312		iflags &= ~INT_MCASTIF;
5313		appendstr(ifs, sizeof ifs, "MCASTif");
5314	}
5315
5316	if (iflags & INT_PRIVACY) {
5317		iflags &= ~INT_PRIVACY;
5318		appendstr(ifs, sizeof ifs, "IPv6privacy");
5319	}
5320
5321	if (iflags & INT_BCASTXMIT) {
5322		iflags &= ~INT_BCASTXMIT;
5323		appendstr(ifs, sizeof ifs, "bcastxmit");
5324	}
5325
5326	if (iflags) {
5327		char string[10];
5328
5329		snprintf(string, sizeof string, "%0x", iflags);
5330		appendstr(ifs, sizeof ifs, string);
5331	}
5332
5333	return ifs;
5334}
5335
5336
5337char *
5338build_mflags(u_short mflags)
5339{
5340	static char mfs[1024];
5341
5342	mfs[0] = '\0';
5343
5344	if (mflags & RESM_NTPONLY) {
5345		mflags &= ~RESM_NTPONLY;
5346		appendstr(mfs, sizeof mfs, "ntponly");
5347	}
5348
5349	if (mflags & RESM_SOURCE) {
5350		mflags &= ~RESM_SOURCE;
5351		appendstr(mfs, sizeof mfs, "source");
5352	}
5353
5354	if (mflags) {
5355		char string[10];
5356
5357		snprintf(string, sizeof string, "%0x", mflags);
5358		appendstr(mfs, sizeof mfs, string);
5359	}
5360
5361	return mfs;
5362}
5363
5364
5365char *
5366build_rflags(u_short rflags)
5367{
5368	static char rfs[1024];
5369
5370	rfs[0] = '\0';
5371
5372	if (rflags & RES_FLAKE) {
5373		rflags &= ~RES_FLAKE;
5374		appendstr(rfs, sizeof rfs, "flake");
5375	}
5376
5377	if (rflags & RES_IGNORE) {
5378		rflags &= ~RES_IGNORE;
5379		appendstr(rfs, sizeof rfs, "ignore");
5380	}
5381
5382	if (rflags & RES_KOD) {
5383		rflags &= ~RES_KOD;
5384		appendstr(rfs, sizeof rfs, "kod");
5385	}
5386
5387	if (rflags & RES_MSSNTP) {
5388		rflags &= ~RES_MSSNTP;
5389		appendstr(rfs, sizeof rfs, "mssntp");
5390	}
5391
5392	if (rflags & RES_LIMITED) {
5393		rflags &= ~RES_LIMITED;
5394		appendstr(rfs, sizeof rfs, "limited");
5395	}
5396
5397	if (rflags & RES_LPTRAP) {
5398		rflags &= ~RES_LPTRAP;
5399		appendstr(rfs, sizeof rfs, "lptrap");
5400	}
5401
5402	if (rflags & RES_NOMODIFY) {
5403		rflags &= ~RES_NOMODIFY;
5404		appendstr(rfs, sizeof rfs, "nomodify");
5405	}
5406
5407	if (rflags & RES_NOMRULIST) {
5408		rflags &= ~RES_NOMRULIST;
5409		appendstr(rfs, sizeof rfs, "nomrulist");
5410	}
5411
5412	if (rflags & RES_NOEPEER) {
5413		rflags &= ~RES_NOEPEER;
5414		appendstr(rfs, sizeof rfs, "noepeer");
5415	}
5416
5417	if (rflags & RES_NOPEER) {
5418		rflags &= ~RES_NOPEER;
5419		appendstr(rfs, sizeof rfs, "nopeer");
5420	}
5421
5422	if (rflags & RES_NOQUERY) {
5423		rflags &= ~RES_NOQUERY;
5424		appendstr(rfs, sizeof rfs, "noquery");
5425	}
5426
5427	if (rflags & RES_DONTSERVE) {
5428		rflags &= ~RES_DONTSERVE;
5429		appendstr(rfs, sizeof rfs, "dontserve");
5430	}
5431
5432	if (rflags & RES_NOTRAP) {
5433		rflags &= ~RES_NOTRAP;
5434		appendstr(rfs, sizeof rfs, "notrap");
5435	}
5436
5437	if (rflags & RES_DONTTRUST) {
5438		rflags &= ~RES_DONTTRUST;
5439		appendstr(rfs, sizeof rfs, "notrust");
5440	}
5441
5442	if (rflags & RES_VERSION) {
5443		rflags &= ~RES_VERSION;
5444		appendstr(rfs, sizeof rfs, "version");
5445	}
5446
5447	if (rflags) {
5448		char string[10];
5449
5450		snprintf(string, sizeof string, "%0x", rflags);
5451		appendstr(rfs, sizeof rfs, string);
5452	}
5453
5454	if ('\0' == rfs[0]) {
5455		appendstr(rfs, sizeof rfs, "(none)");
5456	}
5457
5458	return rfs;
5459}
5460
5461
5462static void
5463appendstr(
5464	char *string,
5465	size_t s,
5466	char *new
5467	)
5468{
5469	if (*string != '\0') {
5470		(void)strlcat(string, ",", s);
5471	}
5472	(void)strlcat(string, new, s);
5473
5474	return;
5475}
5476