xref: /freebsd/sbin/pfctl/parse.y (revision 3332f1b444d4a73238e9f59cca27bfc95fe936bd)
1 /*	$OpenBSD: parse.y,v 1.554 2008/10/17 12:59:53 henning Exp $	*/
2 
3 /*-
4  * SPDX-License-Identifier: BSD-2-Clause
5  *
6  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
7  * Copyright (c) 2001 Daniel Hartmeier.  All rights reserved.
8  * Copyright (c) 2001 Theo de Raadt.  All rights reserved.
9  * Copyright (c) 2002,2003 Henning Brauer. All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 %{
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34 
35 #define PFIOC_USE_LATEST
36 
37 #include <sys/types.h>
38 #include <sys/socket.h>
39 #include <sys/stat.h>
40 #ifdef __FreeBSD__
41 #include <sys/sysctl.h>
42 #endif
43 #include <net/if.h>
44 #include <netinet/in.h>
45 #include <netinet/in_systm.h>
46 #include <netinet/ip.h>
47 #include <netinet/ip_icmp.h>
48 #include <netinet/icmp6.h>
49 #include <net/pfvar.h>
50 #include <arpa/inet.h>
51 #include <net/altq/altq.h>
52 #include <net/altq/altq_cbq.h>
53 #include <net/altq/altq_codel.h>
54 #include <net/altq/altq_priq.h>
55 #include <net/altq/altq_hfsc.h>
56 #include <net/altq/altq_fairq.h>
57 
58 #include <assert.h>
59 #include <stdio.h>
60 #include <unistd.h>
61 #include <stdlib.h>
62 #include <netdb.h>
63 #include <stdarg.h>
64 #include <errno.h>
65 #include <string.h>
66 #include <ctype.h>
67 #include <math.h>
68 #include <err.h>
69 #include <limits.h>
70 #include <pwd.h>
71 #include <grp.h>
72 #include <md5.h>
73 
74 #include "pfctl_parser.h"
75 #include "pfctl.h"
76 
77 static struct pfctl	*pf = NULL;
78 static int		 debug = 0;
79 static int		 rulestate = 0;
80 static u_int16_t	 returnicmpdefault =
81 			    (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
82 static u_int16_t	 returnicmp6default =
83 			    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
84 static int		 blockpolicy = PFRULE_DROP;
85 static int		 failpolicy = PFRULE_DROP;
86 static int		 require_order = 1;
87 static int		 default_statelock;
88 
89 static TAILQ_HEAD(files, file)	 files = TAILQ_HEAD_INITIALIZER(files);
90 static struct file {
91 	TAILQ_ENTRY(file)	 entry;
92 	FILE			*stream;
93 	char			*name;
94 	int			 lineno;
95 	int			 errors;
96 } *file;
97 struct file	*pushfile(const char *, int);
98 int		 popfile(void);
99 int		 check_file_secrecy(int, const char *);
100 int		 yyparse(void);
101 int		 yylex(void);
102 int		 yyerror(const char *, ...);
103 int		 kw_cmp(const void *, const void *);
104 int		 lookup(char *);
105 int		 lgetc(int);
106 int		 lungetc(int);
107 int		 findeol(void);
108 
109 static TAILQ_HEAD(symhead, sym)	 symhead = TAILQ_HEAD_INITIALIZER(symhead);
110 struct sym {
111 	TAILQ_ENTRY(sym)	 entry;
112 	int			 used;
113 	int			 persist;
114 	char			*nam;
115 	char			*val;
116 };
117 int		 symset(const char *, const char *, int);
118 char		*symget(const char *);
119 
120 int		 atoul(char *, u_long *);
121 
122 enum {
123 	PFCTL_STATE_NONE,
124 	PFCTL_STATE_OPTION,
125 	PFCTL_STATE_SCRUB,
126 	PFCTL_STATE_QUEUE,
127 	PFCTL_STATE_NAT,
128 	PFCTL_STATE_FILTER
129 };
130 
131 struct node_proto {
132 	u_int8_t		 proto;
133 	struct node_proto	*next;
134 	struct node_proto	*tail;
135 };
136 
137 struct node_port {
138 	u_int16_t		 port[2];
139 	u_int8_t		 op;
140 	struct node_port	*next;
141 	struct node_port	*tail;
142 };
143 
144 struct node_uid {
145 	uid_t			 uid[2];
146 	u_int8_t		 op;
147 	struct node_uid		*next;
148 	struct node_uid		*tail;
149 };
150 
151 struct node_gid {
152 	gid_t			 gid[2];
153 	u_int8_t		 op;
154 	struct node_gid		*next;
155 	struct node_gid		*tail;
156 };
157 
158 struct node_icmp {
159 	u_int8_t		 code;
160 	u_int8_t		 type;
161 	u_int8_t		 proto;
162 	struct node_icmp	*next;
163 	struct node_icmp	*tail;
164 };
165 
166 enum	{ PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
167 	    PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
168 	    PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
169 	    PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
170 	    PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, };
171 
172 enum	{ PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
173 
174 struct node_state_opt {
175 	int			 type;
176 	union {
177 		u_int32_t	 max_states;
178 		u_int32_t	 max_src_states;
179 		u_int32_t	 max_src_conn;
180 		struct {
181 			u_int32_t	limit;
182 			u_int32_t	seconds;
183 		}		 max_src_conn_rate;
184 		struct {
185 			u_int8_t	flush;
186 			char		tblname[PF_TABLE_NAME_SIZE];
187 		}		 overload;
188 		u_int32_t	 max_src_nodes;
189 		u_int8_t	 src_track;
190 		u_int32_t	 statelock;
191 		struct {
192 			int		number;
193 			u_int32_t	seconds;
194 		}		 timeout;
195 	}			 data;
196 	struct node_state_opt	*next;
197 	struct node_state_opt	*tail;
198 };
199 
200 struct peer {
201 	struct node_host	*host;
202 	struct node_port	*port;
203 };
204 
205 static struct node_queue {
206 	char			 queue[PF_QNAME_SIZE];
207 	char			 parent[PF_QNAME_SIZE];
208 	char			 ifname[IFNAMSIZ];
209 	int			 scheduler;
210 	struct node_queue	*next;
211 	struct node_queue	*tail;
212 }	*queues = NULL;
213 
214 struct node_qassign {
215 	char		*qname;
216 	char		*pqname;
217 };
218 
219 static struct filter_opts {
220 	int			 marker;
221 #define FOM_FLAGS	0x01
222 #define FOM_ICMP	0x02
223 #define FOM_TOS		0x04
224 #define FOM_KEEP	0x08
225 #define FOM_SRCTRACK	0x10
226 #define FOM_SETPRIO	0x0400
227 #define FOM_PRIO	0x2000
228 	struct node_uid		*uid;
229 	struct node_gid		*gid;
230 	struct {
231 		u_int8_t	 b1;
232 		u_int8_t	 b2;
233 		u_int16_t	 w;
234 		u_int16_t	 w2;
235 	} flags;
236 	struct node_icmp	*icmpspec;
237 	u_int32_t		 tos;
238 	u_int32_t		 prob;
239 	u_int32_t		 ridentifier;
240 	struct {
241 		int			 action;
242 		struct node_state_opt	*options;
243 	} keep;
244 	int			 fragment;
245 	int			 allowopts;
246 	char			*label[PF_RULE_MAX_LABEL_COUNT];
247 	int			 labelcount;
248 	struct node_qassign	 queues;
249 	char			*tag;
250 	char			*match_tag;
251 	u_int8_t		 match_tag_not;
252 	u_int16_t		 dnpipe;
253 	u_int16_t		 dnrpipe;
254 	u_int32_t		 free_flags;
255 	u_int			 rtableid;
256 	u_int8_t		 prio;
257 	u_int8_t		 set_prio[2];
258 	struct {
259 		struct node_host	*addr;
260 		u_int16_t		port;
261 	}			 divert;
262 } filter_opts;
263 
264 static struct antispoof_opts {
265 	char			*label[PF_RULE_MAX_LABEL_COUNT];
266 	int			 labelcount;
267 	u_int32_t		 ridentifier;
268 	u_int			 rtableid;
269 } antispoof_opts;
270 
271 static struct scrub_opts {
272 	int			 marker;
273 #define SOM_MINTTL	0x01
274 #define SOM_MAXMSS	0x02
275 #define SOM_FRAGCACHE	0x04
276 #define SOM_SETTOS	0x08
277 	int			 nodf;
278 	int			 minttl;
279 	int			 maxmss;
280 	int			 settos;
281 	int			 fragcache;
282 	int			 randomid;
283 	int			 reassemble_tcp;
284 	char			*match_tag;
285 	u_int8_t		 match_tag_not;
286 	u_int			 rtableid;
287 } scrub_opts;
288 
289 static struct queue_opts {
290 	int			marker;
291 #define QOM_BWSPEC	0x01
292 #define QOM_SCHEDULER	0x02
293 #define QOM_PRIORITY	0x04
294 #define QOM_TBRSIZE	0x08
295 #define QOM_QLIMIT	0x10
296 	struct node_queue_bw	queue_bwspec;
297 	struct node_queue_opt	scheduler;
298 	int			priority;
299 	unsigned int		tbrsize;
300 	int			qlimit;
301 } queue_opts;
302 
303 static struct table_opts {
304 	int			flags;
305 	int			init_addr;
306 	struct node_tinithead	init_nodes;
307 } table_opts;
308 
309 static struct pool_opts {
310 	int			 marker;
311 #define POM_TYPE		0x01
312 #define POM_STICKYADDRESS	0x02
313 	u_int8_t		 opts;
314 	int			 type;
315 	int			 staticport;
316 	struct pf_poolhashkey	*key;
317 	struct pf_mape_portset	 mape;
318 
319 } pool_opts;
320 
321 static struct codel_opts	 codel_opts;
322 static struct node_hfsc_opts	 hfsc_opts;
323 static struct node_fairq_opts	 fairq_opts;
324 static struct node_state_opt	*keep_state_defaults = NULL;
325 static struct pfctl_watermarks	 syncookie_opts;
326 
327 int		 disallow_table(struct node_host *, const char *);
328 int		 disallow_urpf_failed(struct node_host *, const char *);
329 int		 disallow_alias(struct node_host *, const char *);
330 int		 rule_consistent(struct pfctl_rule *, int);
331 int		 filter_consistent(struct pfctl_rule *, int);
332 int		 nat_consistent(struct pfctl_rule *);
333 int		 rdr_consistent(struct pfctl_rule *);
334 int		 process_tabledef(char *, struct table_opts *);
335 void		 expand_label_str(char *, size_t, const char *, const char *);
336 void		 expand_label_if(const char *, char *, size_t, const char *);
337 void		 expand_label_addr(const char *, char *, size_t, u_int8_t,
338 		    struct pf_rule_addr *);
339 void		 expand_label_port(const char *, char *, size_t,
340 		    struct pf_rule_addr *);
341 void		 expand_label_proto(const char *, char *, size_t, u_int8_t);
342 void		 expand_label_nr(const char *, char *, size_t,
343 		    struct pfctl_rule *);
344 void		 expand_rule(struct pfctl_rule *, struct node_if *,
345 		    struct node_host *, struct node_proto *, struct node_os *,
346 		    struct node_host *, struct node_port *, struct node_host *,
347 		    struct node_port *, struct node_uid *, struct node_gid *,
348 		    struct node_icmp *, const char *);
349 int		 expand_altq(struct pf_altq *, struct node_if *,
350 		    struct node_queue *, struct node_queue_bw bwspec,
351 		    struct node_queue_opt *);
352 int		 expand_queue(struct pf_altq *, struct node_if *,
353 		    struct node_queue *, struct node_queue_bw,
354 		    struct node_queue_opt *);
355 int		 expand_skip_interface(struct node_if *);
356 
357 int	 check_rulestate(int);
358 int	 getservice(char *);
359 int	 rule_label(struct pfctl_rule *, char *s[PF_RULE_MAX_LABEL_COUNT]);
360 int	 rt_tableid_max(void);
361 
362 void	 mv_rules(struct pfctl_ruleset *, struct pfctl_ruleset *);
363 void	 decide_address_family(struct node_host *, sa_family_t *);
364 void	 remove_invalid_hosts(struct node_host **, sa_family_t *);
365 int	 invalid_redirect(struct node_host *, sa_family_t);
366 u_int16_t parseicmpspec(char *, sa_family_t);
367 int	 kw_casecmp(const void *, const void *);
368 int	 map_tos(char *string, int *);
369 
370 static TAILQ_HEAD(loadanchorshead, loadanchors)
371     loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
372 
373 struct loadanchors {
374 	TAILQ_ENTRY(loadanchors)	 entries;
375 	char				*anchorname;
376 	char				*filename;
377 };
378 
379 typedef struct {
380 	union {
381 		int64_t			 number;
382 		double			 probability;
383 		int			 i;
384 		char			*string;
385 		u_int			 rtableid;
386 		struct {
387 			u_int8_t	 b1;
388 			u_int8_t	 b2;
389 			u_int16_t	 w;
390 			u_int16_t	 w2;
391 		}			 b;
392 		struct range {
393 			int		 a;
394 			int		 b;
395 			int		 t;
396 		}			 range;
397 		struct node_if		*interface;
398 		struct node_proto	*proto;
399 		struct node_icmp	*icmp;
400 		struct node_host	*host;
401 		struct node_os		*os;
402 		struct node_port	*port;
403 		struct node_uid		*uid;
404 		struct node_gid		*gid;
405 		struct node_state_opt	*state_opt;
406 		struct peer		 peer;
407 		struct {
408 			struct peer	 src, dst;
409 			struct node_os	*src_os;
410 		}			 fromto;
411 		struct {
412 			struct node_host	*host;
413 			u_int8_t		 rt;
414 			u_int8_t		 pool_opts;
415 			sa_family_t		 af;
416 			struct pf_poolhashkey	*key;
417 		}			 route;
418 		struct redirection {
419 			struct node_host	*host;
420 			struct range		 rport;
421 		}			*redirection;
422 		struct {
423 			int			 action;
424 			struct node_state_opt	*options;
425 		}			 keep_state;
426 		struct {
427 			u_int8_t	 log;
428 			u_int8_t	 logif;
429 			u_int8_t	 quick;
430 		}			 logquick;
431 		struct {
432 			int		 neg;
433 			char		*name;
434 		}			 tagged;
435 		struct pf_poolhashkey	*hashkey;
436 		struct node_queue	*queue;
437 		struct node_queue_opt	 queue_options;
438 		struct node_queue_bw	 queue_bwspec;
439 		struct node_qassign	 qassign;
440 		struct filter_opts	 filter_opts;
441 		struct antispoof_opts	 antispoof_opts;
442 		struct queue_opts	 queue_opts;
443 		struct scrub_opts	 scrub_opts;
444 		struct table_opts	 table_opts;
445 		struct pool_opts	 pool_opts;
446 		struct node_hfsc_opts	 hfsc_opts;
447 		struct node_fairq_opts	 fairq_opts;
448 		struct codel_opts	 codel_opts;
449 		struct pfctl_watermarks	*watermarks;
450 	} v;
451 	int lineno;
452 } YYSTYPE;
453 
454 #define PPORT_RANGE	1
455 #define PPORT_STAR	2
456 int	parseport(char *, struct range *r, int);
457 
458 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
459 	(!((addr).iflags & PFI_AFLAG_NOALIAS) ||		 \
460 	!isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
461 
462 %}
463 
464 %token	PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
465 %token	RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
466 %token	ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
467 %token	MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
468 %token	NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
469 %token	REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
470 %token	SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY
471 %token	RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
472 %token	ANTISPOOF FOR INCLUDE KEEPCOUNTERS SYNCOOKIES
473 %token	BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY MAPEPORTSET
474 %token	ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME
475 %token	UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL
476 %token	DNPIPE DNQUEUE RIDENTIFIER
477 %token	LOAD RULESET_OPTIMIZATION PRIO
478 %token	STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
479 %token	MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY
480 %token	TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS
481 %token	DIVERTTO DIVERTREPLY
482 %token	<v.string>		STRING
483 %token	<v.number>		NUMBER
484 %token	<v.i>			PORTBINARY
485 %type	<v.interface>		interface if_list if_item_not if_item
486 %type	<v.number>		number icmptype icmp6type uid gid
487 %type	<v.number>		tos not yesno
488 %type	<v.probability>		probability
489 %type	<v.i>			no dir af fragcache optimizer syncookie_val
490 %type	<v.i>			sourcetrack flush unaryop statelock
491 %type	<v.b>			action nataction natpasslog scrubaction
492 %type	<v.b>			flags flag blockspec prio
493 %type	<v.range>		portplain portstar portrange
494 %type	<v.hashkey>		hashkey
495 %type	<v.proto>		proto proto_list proto_item
496 %type	<v.number>		protoval
497 %type	<v.icmp>		icmpspec
498 %type	<v.icmp>		icmp_list icmp_item
499 %type	<v.icmp>		icmp6_list icmp6_item
500 %type	<v.number>		reticmpspec reticmp6spec
501 %type	<v.fromto>		fromto
502 %type	<v.peer>		ipportspec from to
503 %type	<v.host>		ipspec toipspec xhost host dynaddr host_list
504 %type	<v.host>		redir_host_list redirspec
505 %type	<v.host>		route_host route_host_list routespec
506 %type	<v.os>			os xos os_list
507 %type	<v.port>		portspec port_list port_item
508 %type	<v.uid>			uids uid_list uid_item
509 %type	<v.gid>			gids gid_list gid_item
510 %type	<v.route>		route
511 %type	<v.redirection>		redirection redirpool
512 %type	<v.string>		label stringall tag anchorname
513 %type	<v.string>		string varstring numberstring
514 %type	<v.keep_state>		keep
515 %type	<v.state_opt>		state_opt_spec state_opt_list state_opt_item
516 %type	<v.logquick>		logquick quick log logopts logopt
517 %type	<v.interface>		antispoof_ifspc antispoof_iflst antispoof_if
518 %type	<v.qassign>		qname
519 %type	<v.queue>		qassign qassign_list qassign_item
520 %type	<v.queue_options>	scheduler
521 %type	<v.number>		cbqflags_list cbqflags_item
522 %type	<v.number>		priqflags_list priqflags_item
523 %type	<v.hfsc_opts>		hfscopts_list hfscopts_item hfsc_opts
524 %type	<v.fairq_opts>		fairqopts_list fairqopts_item fairq_opts
525 %type	<v.codel_opts>		codelopts_list codelopts_item codel_opts
526 %type	<v.queue_bwspec>	bandwidth
527 %type	<v.filter_opts>		filter_opts filter_opt filter_opts_l
528 %type	<v.filter_opts>		filter_sets filter_set filter_sets_l
529 %type	<v.antispoof_opts>	antispoof_opts antispoof_opt antispoof_opts_l
530 %type	<v.queue_opts>		queue_opts queue_opt queue_opts_l
531 %type	<v.scrub_opts>		scrub_opts scrub_opt scrub_opts_l
532 %type	<v.table_opts>		table_opts table_opt table_opts_l
533 %type	<v.pool_opts>		pool_opts pool_opt pool_opts_l
534 %type	<v.tagged>		tagged
535 %type	<v.rtableid>		rtable
536 %type	<v.watermarks>		syncookie_opts
537 %%
538 
539 ruleset		: /* empty */
540 		| ruleset include '\n'
541 		| ruleset '\n'
542 		| ruleset option '\n'
543 		| ruleset scrubrule '\n'
544 		| ruleset natrule '\n'
545 		| ruleset binatrule '\n'
546 		| ruleset pfrule '\n'
547 		| ruleset anchorrule '\n'
548 		| ruleset loadrule '\n'
549 		| ruleset altqif '\n'
550 		| ruleset queuespec '\n'
551 		| ruleset varset '\n'
552 		| ruleset antispoof '\n'
553 		| ruleset tabledef '\n'
554 		| '{' fakeanchor '}' '\n';
555 		| ruleset error '\n'		{ file->errors++; }
556 		;
557 
558 include		: INCLUDE STRING		{
559 			struct file	*nfile;
560 
561 			if ((nfile = pushfile($2, 0)) == NULL) {
562 				yyerror("failed to include file %s", $2);
563 				free($2);
564 				YYERROR;
565 			}
566 			free($2);
567 
568 			file = nfile;
569 			lungetc('\n');
570 		}
571 		;
572 
573 /*
574  * apply to previouslys specified rule: must be careful to note
575  * what that is: pf or nat or binat or rdr
576  */
577 fakeanchor	: fakeanchor '\n'
578 		| fakeanchor anchorrule '\n'
579 		| fakeanchor binatrule '\n'
580 		| fakeanchor natrule '\n'
581 		| fakeanchor pfrule '\n'
582 		| fakeanchor error '\n'
583 		;
584 
585 optimizer	: string	{
586 			if (!strcmp($1, "none"))
587 				$$ = 0;
588 			else if (!strcmp($1, "basic"))
589 				$$ = PF_OPTIMIZE_BASIC;
590 			else if (!strcmp($1, "profile"))
591 				$$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
592 			else {
593 				yyerror("unknown ruleset-optimization %s", $1);
594 				YYERROR;
595 			}
596 		}
597 		;
598 
599 option		: SET OPTIMIZATION STRING		{
600 			if (check_rulestate(PFCTL_STATE_OPTION)) {
601 				free($3);
602 				YYERROR;
603 			}
604 			if (pfctl_set_optimization(pf, $3) != 0) {
605 				yyerror("unknown optimization %s", $3);
606 				free($3);
607 				YYERROR;
608 			}
609 			free($3);
610 		}
611 		| SET RULESET_OPTIMIZATION optimizer {
612 			if (!(pf->opts & PF_OPT_OPTIMIZE)) {
613 				pf->opts |= PF_OPT_OPTIMIZE;
614 				pf->optimize = $3;
615 			}
616 		}
617 		| SET TIMEOUT timeout_spec
618 		| SET TIMEOUT '{' optnl timeout_list '}'
619 		| SET LIMIT limit_spec
620 		| SET LIMIT '{' optnl limit_list '}'
621 		| SET LOGINTERFACE stringall		{
622 			if (check_rulestate(PFCTL_STATE_OPTION)) {
623 				free($3);
624 				YYERROR;
625 			}
626 			if (pfctl_set_logif(pf, $3) != 0) {
627 				yyerror("error setting loginterface %s", $3);
628 				free($3);
629 				YYERROR;
630 			}
631 			free($3);
632 		}
633 		| SET HOSTID number {
634 			if ($3 == 0 || $3 > UINT_MAX) {
635 				yyerror("hostid must be non-zero");
636 				YYERROR;
637 			}
638 			if (pfctl_set_hostid(pf, $3) != 0) {
639 				yyerror("error setting hostid %08x", $3);
640 				YYERROR;
641 			}
642 		}
643 		| SET BLOCKPOLICY DROP	{
644 			if (pf->opts & PF_OPT_VERBOSE)
645 				printf("set block-policy drop\n");
646 			if (check_rulestate(PFCTL_STATE_OPTION))
647 				YYERROR;
648 			blockpolicy = PFRULE_DROP;
649 		}
650 		| SET BLOCKPOLICY RETURN {
651 			if (pf->opts & PF_OPT_VERBOSE)
652 				printf("set block-policy return\n");
653 			if (check_rulestate(PFCTL_STATE_OPTION))
654 				YYERROR;
655 			blockpolicy = PFRULE_RETURN;
656 		}
657 		| SET FAILPOLICY DROP	{
658 			if (pf->opts & PF_OPT_VERBOSE)
659 				printf("set fail-policy drop\n");
660 			if (check_rulestate(PFCTL_STATE_OPTION))
661 				YYERROR;
662 			failpolicy = PFRULE_DROP;
663 		}
664 		| SET FAILPOLICY RETURN {
665 			if (pf->opts & PF_OPT_VERBOSE)
666 				printf("set fail-policy return\n");
667 			if (check_rulestate(PFCTL_STATE_OPTION))
668 				YYERROR;
669 			failpolicy = PFRULE_RETURN;
670 		}
671 		| SET REQUIREORDER yesno {
672 			if (pf->opts & PF_OPT_VERBOSE)
673 				printf("set require-order %s\n",
674 				    $3 == 1 ? "yes" : "no");
675 			require_order = $3;
676 		}
677 		| SET FINGERPRINTS STRING {
678 			if (pf->opts & PF_OPT_VERBOSE)
679 				printf("set fingerprints \"%s\"\n", $3);
680 			if (check_rulestate(PFCTL_STATE_OPTION)) {
681 				free($3);
682 				YYERROR;
683 			}
684 			if (!pf->anchor->name[0]) {
685 				if (pfctl_file_fingerprints(pf->dev,
686 				    pf->opts, $3)) {
687 					yyerror("error loading "
688 					    "fingerprints %s", $3);
689 					free($3);
690 					YYERROR;
691 				}
692 			}
693 			free($3);
694 		}
695 		| SET STATEPOLICY statelock {
696 			if (pf->opts & PF_OPT_VERBOSE)
697 				switch ($3) {
698 				case 0:
699 					printf("set state-policy floating\n");
700 					break;
701 				case PFRULE_IFBOUND:
702 					printf("set state-policy if-bound\n");
703 					break;
704 				}
705 			default_statelock = $3;
706 		}
707 		| SET DEBUG STRING {
708 			if (check_rulestate(PFCTL_STATE_OPTION)) {
709 				free($3);
710 				YYERROR;
711 			}
712 			if (pfctl_set_debug(pf, $3) != 0) {
713 				yyerror("error setting debuglevel %s", $3);
714 				free($3);
715 				YYERROR;
716 			}
717 			free($3);
718 		}
719 		| SET SKIP interface {
720 			if (expand_skip_interface($3) != 0) {
721 				yyerror("error setting skip interface(s)");
722 				YYERROR;
723 			}
724 		}
725 		| SET STATEDEFAULTS state_opt_list {
726 			if (keep_state_defaults != NULL) {
727 				yyerror("cannot redefine state-defaults");
728 				YYERROR;
729 			}
730 			keep_state_defaults = $3;
731 		}
732 		| SET KEEPCOUNTERS {
733 			pf->keep_counters = true;
734 		}
735 		| SET SYNCOOKIES syncookie_val syncookie_opts {
736 			if (pfctl_cfg_syncookies(pf, $3, $4)) {
737 				yyerror("error setting syncookies");
738 				YYERROR;
739 			}
740 		}
741 		;
742 
743 syncookie_val  : STRING        {
744 			if (!strcmp($1, "never"))
745 				$$ = PFCTL_SYNCOOKIES_NEVER;
746 			else if (!strcmp($1, "adaptive"))
747 				$$ = PFCTL_SYNCOOKIES_ADAPTIVE;
748 			else if (!strcmp($1, "always"))
749 				$$ = PFCTL_SYNCOOKIES_ALWAYS;
750 			else {
751 				yyerror("illegal value for syncookies");
752 				YYERROR;
753 			}
754 		}
755 		;
756 syncookie_opts  : /* empty */                   { $$ = NULL; }
757 		| {
758 			memset(&syncookie_opts, 0, sizeof(syncookie_opts));
759 		  } '(' syncookie_opt_l ')'     { $$ = &syncookie_opts; }
760 		;
761 
762 syncookie_opt_l : syncookie_opt_l comma syncookie_opt
763 		| syncookie_opt
764 		;
765 
766 syncookie_opt   : STRING STRING {
767 			double   val;
768 			char    *cp;
769 
770 			val = strtod($2, &cp);
771 			if (cp == NULL || strcmp(cp, "%"))
772 				YYERROR;
773 			if (val <= 0 || val > 100) {
774 				yyerror("illegal percentage value");
775 				YYERROR;
776 			}
777 			if (!strcmp($1, "start")) {
778 				syncookie_opts.hi = val;
779 			} else if (!strcmp($1, "end")) {
780 				syncookie_opts.lo = val;
781 			} else {
782 				yyerror("illegal syncookie option");
783 				YYERROR;
784 			}
785 		}
786 		;
787 
788 stringall	: STRING	{ $$ = $1; }
789 		| ALL		{
790 			if (($$ = strdup("all")) == NULL) {
791 				err(1, "stringall: strdup");
792 			}
793 		}
794 		;
795 
796 string		: STRING string				{
797 			if (asprintf(&$$, "%s %s", $1, $2) == -1)
798 				err(1, "string: asprintf");
799 			free($1);
800 			free($2);
801 		}
802 		| STRING
803 		;
804 
805 varstring	: numberstring varstring 		{
806 			if (asprintf(&$$, "%s %s", $1, $2) == -1)
807 				err(1, "string: asprintf");
808 			free($1);
809 			free($2);
810 		}
811 		| numberstring
812 		;
813 
814 numberstring	: NUMBER				{
815 			char	*s;
816 			if (asprintf(&s, "%lld", (long long)$1) == -1) {
817 				yyerror("string: asprintf");
818 				YYERROR;
819 			}
820 			$$ = s;
821 		}
822 		| STRING
823 		;
824 
825 varset		: STRING '=' varstring	{
826 			char *s = $1;
827 			if (pf->opts & PF_OPT_VERBOSE)
828 				printf("%s = \"%s\"\n", $1, $3);
829 			while (*s++) {
830 				if (isspace((unsigned char)*s)) {
831 					yyerror("macro name cannot contain "
832 					   "whitespace");
833 					YYERROR;
834 				}
835 			}
836 			if (symset($1, $3, 0) == -1)
837 				err(1, "cannot store variable %s", $1);
838 			free($1);
839 			free($3);
840 		}
841 		;
842 
843 anchorname	: STRING			{ $$ = $1; }
844 		| /* empty */			{ $$ = NULL; }
845 		;
846 
847 pfa_anchorlist	: /* empty */
848 		| pfa_anchorlist '\n'
849 		| pfa_anchorlist pfrule '\n'
850 		| pfa_anchorlist anchorrule '\n'
851 		;
852 
853 pfa_anchor	: '{'
854 		{
855 			char ta[PF_ANCHOR_NAME_SIZE];
856 			struct pfctl_ruleset *rs;
857 
858 			/* steping into a brace anchor */
859 			pf->asd++;
860 			pf->bn++;
861 
862 			/* create a holding ruleset in the root */
863 			snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
864 			rs = pf_find_or_create_ruleset(ta);
865 			if (rs == NULL)
866 				err(1, "pfa_anchor: pf_find_or_create_ruleset");
867 			pf->astack[pf->asd] = rs->anchor;
868 			pf->anchor = rs->anchor;
869 		} '\n' pfa_anchorlist '}'
870 		{
871 			pf->alast = pf->anchor;
872 			pf->asd--;
873 			pf->anchor = pf->astack[pf->asd];
874 		}
875 		| /* empty */
876 		;
877 
878 anchorrule	: ANCHOR anchorname dir quick interface af proto fromto
879 		    filter_opts pfa_anchor
880 		{
881 			struct pfctl_rule	r;
882 			struct node_proto	*proto;
883 
884 			if (check_rulestate(PFCTL_STATE_FILTER)) {
885 				if ($2)
886 					free($2);
887 				YYERROR;
888 			}
889 
890 			if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
891 				free($2);
892 				yyerror("anchor names beginning with '_' "
893 				    "are reserved for internal use");
894 				YYERROR;
895 			}
896 
897 			memset(&r, 0, sizeof(r));
898 			if (pf->astack[pf->asd + 1]) {
899 				/* move inline rules into relative location */
900 				pfctl_anchor_setup(&r,
901 				    &pf->astack[pf->asd]->ruleset,
902 				    $2 ? $2 : pf->alast->name);
903 
904 				if (r.anchor == NULL)
905 					err(1, "anchorrule: unable to "
906 					    "create ruleset");
907 
908 				if (pf->alast != r.anchor) {
909 					if (r.anchor->match) {
910 						yyerror("inline anchor '%s' "
911 						    "already exists",
912 						    r.anchor->name);
913 						YYERROR;
914 					}
915 					mv_rules(&pf->alast->ruleset,
916 					    &r.anchor->ruleset);
917 				}
918 				pf_remove_if_empty_ruleset(&pf->alast->ruleset);
919 				pf->alast = r.anchor;
920 			} else {
921 				if (!$2) {
922 					yyerror("anchors without explicit "
923 					    "rules must specify a name");
924 					YYERROR;
925 				}
926 			}
927 			r.direction = $3;
928 			r.quick = $4.quick;
929 			r.af = $6;
930 			r.prob = $9.prob;
931 			r.rtableid = $9.rtableid;
932 			r.ridentifier = $9.ridentifier;
933 
934 			if ($9.tag)
935 				if (strlcpy(r.tagname, $9.tag,
936 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
937 					yyerror("tag too long, max %u chars",
938 					    PF_TAG_NAME_SIZE - 1);
939 					YYERROR;
940 				}
941 			if ($9.match_tag)
942 				if (strlcpy(r.match_tagname, $9.match_tag,
943 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
944 					yyerror("tag too long, max %u chars",
945 					    PF_TAG_NAME_SIZE - 1);
946 					YYERROR;
947 				}
948 			r.match_tag_not = $9.match_tag_not;
949 			if (rule_label(&r, $9.label))
950 				YYERROR;
951 			for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
952 				free($9.label[i]);
953 			r.flags = $9.flags.b1;
954 			r.flagset = $9.flags.b2;
955 			if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
956 				yyerror("flags always false");
957 				YYERROR;
958 			}
959 			if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
960 				for (proto = $7; proto != NULL &&
961 				    proto->proto != IPPROTO_TCP;
962 				    proto = proto->next)
963 					;	/* nothing */
964 				if (proto == NULL && $7 != NULL) {
965 					if ($9.flags.b1 || $9.flags.b2)
966 						yyerror(
967 						    "flags only apply to tcp");
968 					if ($8.src_os)
969 						yyerror(
970 						    "OS fingerprinting only "
971 						    "applies to tcp");
972 					YYERROR;
973 				}
974 			}
975 
976 			r.tos = $9.tos;
977 
978 			if ($9.keep.action) {
979 				yyerror("cannot specify state handling "
980 				    "on anchors");
981 				YYERROR;
982 			}
983 
984 			if ($9.match_tag)
985 				if (strlcpy(r.match_tagname, $9.match_tag,
986 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
987 					yyerror("tag too long, max %u chars",
988 					    PF_TAG_NAME_SIZE - 1);
989 					YYERROR;
990 				}
991 			r.match_tag_not = $9.match_tag_not;
992 			if ($9.marker & FOM_PRIO) {
993 				if ($9.prio == 0)
994 					r.prio = PF_PRIO_ZERO;
995 				else
996 					r.prio = $9.prio;
997 			}
998 			if ($9.marker & FOM_SETPRIO) {
999 				r.set_prio[0] = $9.set_prio[0];
1000 				r.set_prio[1] = $9.set_prio[1];
1001 				r.scrub_flags |= PFSTATE_SETPRIO;
1002 			}
1003 
1004 			decide_address_family($8.src.host, &r.af);
1005 			decide_address_family($8.dst.host, &r.af);
1006 
1007 			expand_rule(&r, $5, NULL, $7, $8.src_os,
1008 			    $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
1009 			    $9.uid, $9.gid, $9.icmpspec,
1010 			    pf->astack[pf->asd + 1] ? pf->alast->name : $2);
1011 			free($2);
1012 			pf->astack[pf->asd + 1] = NULL;
1013 		}
1014 		| NATANCHOR string interface af proto fromto rtable {
1015 			struct pfctl_rule	r;
1016 
1017 			if (check_rulestate(PFCTL_STATE_NAT)) {
1018 				free($2);
1019 				YYERROR;
1020 			}
1021 
1022 			memset(&r, 0, sizeof(r));
1023 			r.action = PF_NAT;
1024 			r.af = $4;
1025 			r.rtableid = $7;
1026 
1027 			decide_address_family($6.src.host, &r.af);
1028 			decide_address_family($6.dst.host, &r.af);
1029 
1030 			expand_rule(&r, $3, NULL, $5, $6.src_os,
1031 			    $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
1032 			    0, 0, 0, $2);
1033 			free($2);
1034 		}
1035 		| RDRANCHOR string interface af proto fromto rtable {
1036 			struct pfctl_rule	r;
1037 
1038 			if (check_rulestate(PFCTL_STATE_NAT)) {
1039 				free($2);
1040 				YYERROR;
1041 			}
1042 
1043 			memset(&r, 0, sizeof(r));
1044 			r.action = PF_RDR;
1045 			r.af = $4;
1046 			r.rtableid = $7;
1047 
1048 			decide_address_family($6.src.host, &r.af);
1049 			decide_address_family($6.dst.host, &r.af);
1050 
1051 			if ($6.src.port != NULL) {
1052 				yyerror("source port parameter not supported"
1053 				    " in rdr-anchor");
1054 				YYERROR;
1055 			}
1056 			if ($6.dst.port != NULL) {
1057 				if ($6.dst.port->next != NULL) {
1058 					yyerror("destination port list "
1059 					    "expansion not supported in "
1060 					    "rdr-anchor");
1061 					YYERROR;
1062 				} else if ($6.dst.port->op != PF_OP_EQ) {
1063 					yyerror("destination port operators"
1064 					    " not supported in rdr-anchor");
1065 					YYERROR;
1066 				}
1067 				r.dst.port[0] = $6.dst.port->port[0];
1068 				r.dst.port[1] = $6.dst.port->port[1];
1069 				r.dst.port_op = $6.dst.port->op;
1070 			}
1071 
1072 			expand_rule(&r, $3, NULL, $5, $6.src_os,
1073 			    $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
1074 			    0, 0, 0, $2);
1075 			free($2);
1076 		}
1077 		| BINATANCHOR string interface af proto fromto rtable {
1078 			struct pfctl_rule	r;
1079 
1080 			if (check_rulestate(PFCTL_STATE_NAT)) {
1081 				free($2);
1082 				YYERROR;
1083 			}
1084 
1085 			memset(&r, 0, sizeof(r));
1086 			r.action = PF_BINAT;
1087 			r.af = $4;
1088 			r.rtableid = $7;
1089 			if ($5 != NULL) {
1090 				if ($5->next != NULL) {
1091 					yyerror("proto list expansion"
1092 					    " not supported in binat-anchor");
1093 					YYERROR;
1094 				}
1095 				r.proto = $5->proto;
1096 				free($5);
1097 			}
1098 
1099 			if ($6.src.host != NULL || $6.src.port != NULL ||
1100 			    $6.dst.host != NULL || $6.dst.port != NULL) {
1101 				yyerror("fromto parameter not supported"
1102 				    " in binat-anchor");
1103 				YYERROR;
1104 			}
1105 
1106 			decide_address_family($6.src.host, &r.af);
1107 			decide_address_family($6.dst.host, &r.af);
1108 
1109 			pfctl_append_rule(pf, &r, $2);
1110 			free($2);
1111 		}
1112 		;
1113 
1114 loadrule	: LOAD ANCHOR string FROM string	{
1115 			struct loadanchors	*loadanchor;
1116 
1117 			if (strlen(pf->anchor->name) + 1 +
1118 			    strlen($3) >= MAXPATHLEN) {
1119 				yyerror("anchorname %s too long, max %u\n",
1120 				    $3, MAXPATHLEN - 1);
1121 				free($3);
1122 				YYERROR;
1123 			}
1124 			loadanchor = calloc(1, sizeof(struct loadanchors));
1125 			if (loadanchor == NULL)
1126 				err(1, "loadrule: calloc");
1127 			if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
1128 			    NULL)
1129 				err(1, "loadrule: malloc");
1130 			if (pf->anchor->name[0])
1131 				snprintf(loadanchor->anchorname, MAXPATHLEN,
1132 				    "%s/%s", pf->anchor->name, $3);
1133 			else
1134 				strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
1135 			if ((loadanchor->filename = strdup($5)) == NULL)
1136 				err(1, "loadrule: strdup");
1137 
1138 			TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
1139 			    entries);
1140 
1141 			free($3);
1142 			free($5);
1143 		};
1144 
1145 scrubaction	: no SCRUB {
1146 			$$.b2 = $$.w = 0;
1147 			if ($1)
1148 				$$.b1 = PF_NOSCRUB;
1149 			else
1150 				$$.b1 = PF_SCRUB;
1151 		}
1152 		;
1153 
1154 scrubrule	: scrubaction dir logquick interface af proto fromto scrub_opts
1155 		{
1156 			struct pfctl_rule	r;
1157 
1158 			if (check_rulestate(PFCTL_STATE_SCRUB))
1159 				YYERROR;
1160 
1161 			memset(&r, 0, sizeof(r));
1162 
1163 			r.action = $1.b1;
1164 			r.direction = $2;
1165 
1166 			r.log = $3.log;
1167 			r.logif = $3.logif;
1168 			if ($3.quick) {
1169 				yyerror("scrub rules do not support 'quick'");
1170 				YYERROR;
1171 			}
1172 
1173 			r.af = $5;
1174 			if ($8.nodf)
1175 				r.rule_flag |= PFRULE_NODF;
1176 			if ($8.randomid)
1177 				r.rule_flag |= PFRULE_RANDOMID;
1178 			if ($8.reassemble_tcp) {
1179 				if (r.direction != PF_INOUT) {
1180 					yyerror("reassemble tcp rules can not "
1181 					    "specify direction");
1182 					YYERROR;
1183 				}
1184 				r.rule_flag |= PFRULE_REASSEMBLE_TCP;
1185 			}
1186 			if ($8.minttl)
1187 				r.min_ttl = $8.minttl;
1188 			if ($8.maxmss)
1189 				r.max_mss = $8.maxmss;
1190 			if ($8.marker & SOM_SETTOS) {
1191 				r.rule_flag |= PFRULE_SET_TOS;
1192 				r.set_tos = $8.settos;
1193 			}
1194 			if ($8.fragcache)
1195 				r.rule_flag |= $8.fragcache;
1196 			if ($8.match_tag)
1197 				if (strlcpy(r.match_tagname, $8.match_tag,
1198 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1199 					yyerror("tag too long, max %u chars",
1200 					    PF_TAG_NAME_SIZE - 1);
1201 					YYERROR;
1202 				}
1203 			r.match_tag_not = $8.match_tag_not;
1204 			r.rtableid = $8.rtableid;
1205 
1206 			expand_rule(&r, $4, NULL, $6, $7.src_os,
1207 			    $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
1208 			    NULL, NULL, NULL, "");
1209 		}
1210 		;
1211 
1212 scrub_opts	:	{
1213 				bzero(&scrub_opts, sizeof scrub_opts);
1214 				scrub_opts.rtableid = -1;
1215 			}
1216 		    scrub_opts_l
1217 			{ $$ = scrub_opts; }
1218 		| /* empty */ {
1219 			bzero(&scrub_opts, sizeof scrub_opts);
1220 			scrub_opts.rtableid = -1;
1221 			$$ = scrub_opts;
1222 		}
1223 		;
1224 
1225 scrub_opts_l	: scrub_opts_l scrub_opt
1226 		| scrub_opt
1227 		;
1228 
1229 scrub_opt	: NODF	{
1230 			if (scrub_opts.nodf) {
1231 				yyerror("no-df cannot be respecified");
1232 				YYERROR;
1233 			}
1234 			scrub_opts.nodf = 1;
1235 		}
1236 		| MINTTL NUMBER {
1237 			if (scrub_opts.marker & SOM_MINTTL) {
1238 				yyerror("min-ttl cannot be respecified");
1239 				YYERROR;
1240 			}
1241 			if ($2 < 0 || $2 > 255) {
1242 				yyerror("illegal min-ttl value %d", $2);
1243 				YYERROR;
1244 			}
1245 			scrub_opts.marker |= SOM_MINTTL;
1246 			scrub_opts.minttl = $2;
1247 		}
1248 		| MAXMSS NUMBER {
1249 			if (scrub_opts.marker & SOM_MAXMSS) {
1250 				yyerror("max-mss cannot be respecified");
1251 				YYERROR;
1252 			}
1253 			if ($2 < 0 || $2 > 65535) {
1254 				yyerror("illegal max-mss value %d", $2);
1255 				YYERROR;
1256 			}
1257 			scrub_opts.marker |= SOM_MAXMSS;
1258 			scrub_opts.maxmss = $2;
1259 		}
1260 		| SETTOS tos {
1261 			if (scrub_opts.marker & SOM_SETTOS) {
1262 				yyerror("set-tos cannot be respecified");
1263 				YYERROR;
1264 			}
1265 			scrub_opts.marker |= SOM_SETTOS;
1266 			scrub_opts.settos = $2;
1267 		}
1268 		| fragcache {
1269 			if (scrub_opts.marker & SOM_FRAGCACHE) {
1270 				yyerror("fragcache cannot be respecified");
1271 				YYERROR;
1272 			}
1273 			scrub_opts.marker |= SOM_FRAGCACHE;
1274 			scrub_opts.fragcache = $1;
1275 		}
1276 		| REASSEMBLE STRING {
1277 			if (strcasecmp($2, "tcp") != 0) {
1278 				yyerror("scrub reassemble supports only tcp, "
1279 				    "not '%s'", $2);
1280 				free($2);
1281 				YYERROR;
1282 			}
1283 			free($2);
1284 			if (scrub_opts.reassemble_tcp) {
1285 				yyerror("reassemble tcp cannot be respecified");
1286 				YYERROR;
1287 			}
1288 			scrub_opts.reassemble_tcp = 1;
1289 		}
1290 		| RANDOMID {
1291 			if (scrub_opts.randomid) {
1292 				yyerror("random-id cannot be respecified");
1293 				YYERROR;
1294 			}
1295 			scrub_opts.randomid = 1;
1296 		}
1297 		| RTABLE NUMBER				{
1298 			if ($2 < 0 || $2 > rt_tableid_max()) {
1299 				yyerror("invalid rtable id");
1300 				YYERROR;
1301 			}
1302 			scrub_opts.rtableid = $2;
1303 		}
1304 		| not TAGGED string			{
1305 			scrub_opts.match_tag = $3;
1306 			scrub_opts.match_tag_not = $1;
1307 		}
1308 		;
1309 
1310 fragcache	: FRAGMENT REASSEMBLE	{ $$ = 0; /* default */ }
1311 		| FRAGMENT FRAGCROP	{ $$ = 0; }
1312 		| FRAGMENT FRAGDROP	{ $$ = 0; }
1313 		;
1314 
1315 antispoof	: ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1316 			struct pfctl_rule	 r;
1317 			struct node_host	*h = NULL, *hh;
1318 			struct node_if		*i, *j;
1319 
1320 			if (check_rulestate(PFCTL_STATE_FILTER))
1321 				YYERROR;
1322 
1323 			for (i = $3; i; i = i->next) {
1324 				bzero(&r, sizeof(r));
1325 
1326 				r.action = PF_DROP;
1327 				r.direction = PF_IN;
1328 				r.log = $2.log;
1329 				r.logif = $2.logif;
1330 				r.quick = $2.quick;
1331 				r.af = $4;
1332 				r.ridentifier = $5.ridentifier;
1333 				if (rule_label(&r, $5.label))
1334 					YYERROR;
1335 				r.rtableid = $5.rtableid;
1336 				j = calloc(1, sizeof(struct node_if));
1337 				if (j == NULL)
1338 					err(1, "antispoof: calloc");
1339 				if (strlcpy(j->ifname, i->ifname,
1340 				    sizeof(j->ifname)) >= sizeof(j->ifname)) {
1341 					free(j);
1342 					yyerror("interface name too long");
1343 					YYERROR;
1344 				}
1345 				j->not = 1;
1346 				if (i->dynamic) {
1347 					h = calloc(1, sizeof(*h));
1348 					if (h == NULL)
1349 						err(1, "address: calloc");
1350 					h->addr.type = PF_ADDR_DYNIFTL;
1351 					set_ipmask(h, 128);
1352 					if (strlcpy(h->addr.v.ifname, i->ifname,
1353 					    sizeof(h->addr.v.ifname)) >=
1354 					    sizeof(h->addr.v.ifname)) {
1355 						free(h);
1356 						yyerror(
1357 						    "interface name too long");
1358 						YYERROR;
1359 					}
1360 					hh = malloc(sizeof(*hh));
1361 					if (hh == NULL)
1362 						 err(1, "address: malloc");
1363 					bcopy(h, hh, sizeof(*hh));
1364 					h->addr.iflags = PFI_AFLAG_NETWORK;
1365 				} else {
1366 					h = ifa_lookup(j->ifname,
1367 					    PFI_AFLAG_NETWORK);
1368 					hh = NULL;
1369 				}
1370 
1371 				if (h != NULL)
1372 					expand_rule(&r, j, NULL, NULL, NULL, h,
1373 					    NULL, NULL, NULL, NULL, NULL,
1374 					    NULL, "");
1375 
1376 				if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1377 					bzero(&r, sizeof(r));
1378 
1379 					r.action = PF_DROP;
1380 					r.direction = PF_IN;
1381 					r.log = $2.log;
1382 					r.logif = $2.logif;
1383 					r.quick = $2.quick;
1384 					r.af = $4;
1385 					r.ridentifier = $5.ridentifier;
1386 					if (rule_label(&r, $5.label))
1387 						YYERROR;
1388 					r.rtableid = $5.rtableid;
1389 					if (hh != NULL)
1390 						h = hh;
1391 					else
1392 						h = ifa_lookup(i->ifname, 0);
1393 					if (h != NULL)
1394 						expand_rule(&r, NULL, NULL,
1395 						    NULL, NULL, h, NULL, NULL,
1396 						    NULL, NULL, NULL, NULL, "");
1397 				} else
1398 					free(hh);
1399 			}
1400 			for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
1401 				free($5.label[i]);
1402 		}
1403 		;
1404 
1405 antispoof_ifspc	: FOR antispoof_if			{ $$ = $2; }
1406 		| FOR '{' optnl antispoof_iflst '}'	{ $$ = $4; }
1407 		;
1408 
1409 antispoof_iflst	: antispoof_if optnl			{ $$ = $1; }
1410 		| antispoof_iflst comma antispoof_if optnl {
1411 			$1->tail->next = $3;
1412 			$1->tail = $3;
1413 			$$ = $1;
1414 		}
1415 		;
1416 
1417 antispoof_if	: if_item				{ $$ = $1; }
1418 		| '(' if_item ')'			{
1419 			$2->dynamic = 1;
1420 			$$ = $2;
1421 		}
1422 		;
1423 
1424 antispoof_opts	:	{
1425 				bzero(&antispoof_opts, sizeof antispoof_opts);
1426 				antispoof_opts.rtableid = -1;
1427 			}
1428 		    antispoof_opts_l
1429 			{ $$ = antispoof_opts; }
1430 		| /* empty */	{
1431 			bzero(&antispoof_opts, sizeof antispoof_opts);
1432 			antispoof_opts.rtableid = -1;
1433 			$$ = antispoof_opts;
1434 		}
1435 		;
1436 
1437 antispoof_opts_l	: antispoof_opts_l antispoof_opt
1438 			| antispoof_opt
1439 			;
1440 
1441 antispoof_opt	: label	{
1442 			if (antispoof_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) {
1443 				yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT);
1444 				YYERROR;
1445 			}
1446 			antispoof_opts.label[antispoof_opts.labelcount++] = $1;
1447 		}
1448 		| RIDENTIFIER number {
1449 			antispoof_opts.ridentifier = $2;
1450 		}
1451 		| RTABLE NUMBER				{
1452 			if ($2 < 0 || $2 > rt_tableid_max()) {
1453 				yyerror("invalid rtable id");
1454 				YYERROR;
1455 			}
1456 			antispoof_opts.rtableid = $2;
1457 		}
1458 		;
1459 
1460 not		: '!'		{ $$ = 1; }
1461 		| /* empty */	{ $$ = 0; }
1462 		;
1463 
1464 tabledef	: TABLE '<' STRING '>' table_opts {
1465 			struct node_host	 *h, *nh;
1466 			struct node_tinit	 *ti, *nti;
1467 
1468 			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1469 				yyerror("table name too long, max %d chars",
1470 				    PF_TABLE_NAME_SIZE - 1);
1471 				free($3);
1472 				YYERROR;
1473 			}
1474 			if (pf->loadopt & PFCTL_FLAG_TABLE)
1475 				if (process_tabledef($3, &$5)) {
1476 					free($3);
1477 					YYERROR;
1478 				}
1479 			free($3);
1480 			for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1481 			    ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1482 				if (ti->file)
1483 					free(ti->file);
1484 				for (h = ti->host; h != NULL; h = nh) {
1485 					nh = h->next;
1486 					free(h);
1487 				}
1488 				nti = SIMPLEQ_NEXT(ti, entries);
1489 				free(ti);
1490 			}
1491 		}
1492 		;
1493 
1494 table_opts	:	{
1495 			bzero(&table_opts, sizeof table_opts);
1496 			SIMPLEQ_INIT(&table_opts.init_nodes);
1497 		}
1498 		    table_opts_l
1499 			{ $$ = table_opts; }
1500 		| /* empty */
1501 			{
1502 			bzero(&table_opts, sizeof table_opts);
1503 			SIMPLEQ_INIT(&table_opts.init_nodes);
1504 			$$ = table_opts;
1505 		}
1506 		;
1507 
1508 table_opts_l	: table_opts_l table_opt
1509 		| table_opt
1510 		;
1511 
1512 table_opt	: STRING		{
1513 			if (!strcmp($1, "const"))
1514 				table_opts.flags |= PFR_TFLAG_CONST;
1515 			else if (!strcmp($1, "persist"))
1516 				table_opts.flags |= PFR_TFLAG_PERSIST;
1517 			else if (!strcmp($1, "counters"))
1518 				table_opts.flags |= PFR_TFLAG_COUNTERS;
1519 			else {
1520 				yyerror("invalid table option '%s'", $1);
1521 				free($1);
1522 				YYERROR;
1523 			}
1524 			free($1);
1525 		}
1526 		| '{' optnl '}'		{ table_opts.init_addr = 1; }
1527 		| '{' optnl host_list '}'	{
1528 			struct node_host	*n;
1529 			struct node_tinit	*ti;
1530 
1531 			for (n = $3; n != NULL; n = n->next) {
1532 				switch (n->addr.type) {
1533 				case PF_ADDR_ADDRMASK:
1534 					continue; /* ok */
1535 				case PF_ADDR_RANGE:
1536 					yyerror("address ranges are not "
1537 					    "permitted inside tables");
1538 					break;
1539 				case PF_ADDR_DYNIFTL:
1540 					yyerror("dynamic addresses are not "
1541 					    "permitted inside tables");
1542 					break;
1543 				case PF_ADDR_TABLE:
1544 					yyerror("tables cannot contain tables");
1545 					break;
1546 				case PF_ADDR_NOROUTE:
1547 					yyerror("\"no-route\" is not permitted "
1548 					    "inside tables");
1549 					break;
1550 				case PF_ADDR_URPFFAILED:
1551 					yyerror("\"urpf-failed\" is not "
1552 					    "permitted inside tables");
1553 					break;
1554 				default:
1555 					yyerror("unknown address type %d",
1556 					    n->addr.type);
1557 				}
1558 				YYERROR;
1559 			}
1560 			if (!(ti = calloc(1, sizeof(*ti))))
1561 				err(1, "table_opt: calloc");
1562 			ti->host = $3;
1563 			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1564 			    entries);
1565 			table_opts.init_addr = 1;
1566 		}
1567 		| FILENAME STRING	{
1568 			struct node_tinit	*ti;
1569 
1570 			if (!(ti = calloc(1, sizeof(*ti))))
1571 				err(1, "table_opt: calloc");
1572 			ti->file = $2;
1573 			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1574 			    entries);
1575 			table_opts.init_addr = 1;
1576 		}
1577 		;
1578 
1579 altqif		: ALTQ interface queue_opts QUEUE qassign {
1580 			struct pf_altq	a;
1581 
1582 			if (check_rulestate(PFCTL_STATE_QUEUE))
1583 				YYERROR;
1584 
1585 			memset(&a, 0, sizeof(a));
1586 			if ($3.scheduler.qtype == ALTQT_NONE) {
1587 				yyerror("no scheduler specified!");
1588 				YYERROR;
1589 			}
1590 			a.scheduler = $3.scheduler.qtype;
1591 			a.qlimit = $3.qlimit;
1592 			a.tbrsize = $3.tbrsize;
1593 			if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) {
1594 				yyerror("no child queues specified");
1595 				YYERROR;
1596 			}
1597 			if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1598 			    &$3.scheduler))
1599 				YYERROR;
1600 		}
1601 		;
1602 
1603 queuespec	: QUEUE STRING interface queue_opts qassign {
1604 			struct pf_altq	a;
1605 
1606 			if (check_rulestate(PFCTL_STATE_QUEUE)) {
1607 				free($2);
1608 				YYERROR;
1609 			}
1610 
1611 			memset(&a, 0, sizeof(a));
1612 
1613 			if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1614 			    sizeof(a.qname)) {
1615 				yyerror("queue name too long (max "
1616 				    "%d chars)", PF_QNAME_SIZE-1);
1617 				free($2);
1618 				YYERROR;
1619 			}
1620 			free($2);
1621 			if ($4.tbrsize) {
1622 				yyerror("cannot specify tbrsize for queue");
1623 				YYERROR;
1624 			}
1625 			if ($4.priority > 255) {
1626 				yyerror("priority out of range: max 255");
1627 				YYERROR;
1628 			}
1629 			a.priority = $4.priority;
1630 			a.qlimit = $4.qlimit;
1631 			a.scheduler = $4.scheduler.qtype;
1632 			if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1633 			    &$4.scheduler)) {
1634 				yyerror("errors in queue definition");
1635 				YYERROR;
1636 			}
1637 		}
1638 		;
1639 
1640 queue_opts	:	{
1641 			bzero(&queue_opts, sizeof queue_opts);
1642 			queue_opts.priority = DEFAULT_PRIORITY;
1643 			queue_opts.qlimit = DEFAULT_QLIMIT;
1644 			queue_opts.scheduler.qtype = ALTQT_NONE;
1645 			queue_opts.queue_bwspec.bw_percent = 100;
1646 		}
1647 		    queue_opts_l
1648 			{ $$ = queue_opts; }
1649 		| /* empty */ {
1650 			bzero(&queue_opts, sizeof queue_opts);
1651 			queue_opts.priority = DEFAULT_PRIORITY;
1652 			queue_opts.qlimit = DEFAULT_QLIMIT;
1653 			queue_opts.scheduler.qtype = ALTQT_NONE;
1654 			queue_opts.queue_bwspec.bw_percent = 100;
1655 			$$ = queue_opts;
1656 		}
1657 		;
1658 
1659 queue_opts_l	: queue_opts_l queue_opt
1660 		| queue_opt
1661 		;
1662 
1663 queue_opt	: BANDWIDTH bandwidth	{
1664 			if (queue_opts.marker & QOM_BWSPEC) {
1665 				yyerror("bandwidth cannot be respecified");
1666 				YYERROR;
1667 			}
1668 			queue_opts.marker |= QOM_BWSPEC;
1669 			queue_opts.queue_bwspec = $2;
1670 		}
1671 		| PRIORITY NUMBER	{
1672 			if (queue_opts.marker & QOM_PRIORITY) {
1673 				yyerror("priority cannot be respecified");
1674 				YYERROR;
1675 			}
1676 			if ($2 < 0 || $2 > 255) {
1677 				yyerror("priority out of range: max 255");
1678 				YYERROR;
1679 			}
1680 			queue_opts.marker |= QOM_PRIORITY;
1681 			queue_opts.priority = $2;
1682 		}
1683 		| QLIMIT NUMBER	{
1684 			if (queue_opts.marker & QOM_QLIMIT) {
1685 				yyerror("qlimit cannot be respecified");
1686 				YYERROR;
1687 			}
1688 			if ($2 < 0 || $2 > 65535) {
1689 				yyerror("qlimit out of range: max 65535");
1690 				YYERROR;
1691 			}
1692 			queue_opts.marker |= QOM_QLIMIT;
1693 			queue_opts.qlimit = $2;
1694 		}
1695 		| scheduler	{
1696 			if (queue_opts.marker & QOM_SCHEDULER) {
1697 				yyerror("scheduler cannot be respecified");
1698 				YYERROR;
1699 			}
1700 			queue_opts.marker |= QOM_SCHEDULER;
1701 			queue_opts.scheduler = $1;
1702 		}
1703 		| TBRSIZE NUMBER	{
1704 			if (queue_opts.marker & QOM_TBRSIZE) {
1705 				yyerror("tbrsize cannot be respecified");
1706 				YYERROR;
1707 			}
1708 			if ($2 < 0 || $2 > UINT_MAX) {
1709 				yyerror("tbrsize too big: max %u", UINT_MAX);
1710 				YYERROR;
1711 			}
1712 			queue_opts.marker |= QOM_TBRSIZE;
1713 			queue_opts.tbrsize = $2;
1714 		}
1715 		;
1716 
1717 bandwidth	: STRING {
1718 			double	 bps;
1719 			char	*cp;
1720 
1721 			$$.bw_percent = 0;
1722 
1723 			bps = strtod($1, &cp);
1724 			if (cp != NULL) {
1725 				if (strlen(cp) > 1) {
1726 					char *cu = cp + 1;
1727 					if (!strcmp(cu, "Bit") ||
1728 					    !strcmp(cu, "B") ||
1729 					    !strcmp(cu, "bit") ||
1730 					    !strcmp(cu, "b")) {
1731 						*cu = 0;
1732 					}
1733 				}
1734 				if (!strcmp(cp, "b"))
1735 					; /* nothing */
1736 				else if (!strcmp(cp, "K"))
1737 					bps *= 1000;
1738 				else if (!strcmp(cp, "M"))
1739 					bps *= 1000 * 1000;
1740 				else if (!strcmp(cp, "G"))
1741 					bps *= 1000 * 1000 * 1000;
1742 				else if (!strcmp(cp, "%")) {
1743 					if (bps < 0 || bps > 100) {
1744 						yyerror("bandwidth spec "
1745 						    "out of range");
1746 						free($1);
1747 						YYERROR;
1748 					}
1749 					$$.bw_percent = bps;
1750 					bps = 0;
1751 				} else {
1752 					yyerror("unknown unit %s", cp);
1753 					free($1);
1754 					YYERROR;
1755 				}
1756 			}
1757 			free($1);
1758 			$$.bw_absolute = (u_int64_t)bps;
1759 		}
1760 		| NUMBER {
1761 			if ($1 < 0 || $1 >= LLONG_MAX) {
1762 				yyerror("bandwidth number too big");
1763 				YYERROR;
1764 			}
1765 			$$.bw_percent = 0;
1766 			$$.bw_absolute = $1;
1767 		}
1768 		;
1769 
1770 scheduler	: CBQ				{
1771 			$$.qtype = ALTQT_CBQ;
1772 			$$.data.cbq_opts.flags = 0;
1773 		}
1774 		| CBQ '(' cbqflags_list ')'	{
1775 			$$.qtype = ALTQT_CBQ;
1776 			$$.data.cbq_opts.flags = $3;
1777 		}
1778 		| PRIQ				{
1779 			$$.qtype = ALTQT_PRIQ;
1780 			$$.data.priq_opts.flags = 0;
1781 		}
1782 		| PRIQ '(' priqflags_list ')'	{
1783 			$$.qtype = ALTQT_PRIQ;
1784 			$$.data.priq_opts.flags = $3;
1785 		}
1786 		| HFSC				{
1787 			$$.qtype = ALTQT_HFSC;
1788 			bzero(&$$.data.hfsc_opts,
1789 			    sizeof(struct node_hfsc_opts));
1790 		}
1791 		| HFSC '(' hfsc_opts ')'	{
1792 			$$.qtype = ALTQT_HFSC;
1793 			$$.data.hfsc_opts = $3;
1794 		}
1795 		| FAIRQ				{
1796 			$$.qtype = ALTQT_FAIRQ;
1797 			bzero(&$$.data.fairq_opts,
1798 				sizeof(struct node_fairq_opts));
1799 		}
1800 		| FAIRQ '(' fairq_opts ')'      {
1801 			$$.qtype = ALTQT_FAIRQ;
1802 			$$.data.fairq_opts = $3;
1803 		}
1804 		| CODEL				{
1805 			$$.qtype = ALTQT_CODEL;
1806 			bzero(&$$.data.codel_opts,
1807 				sizeof(struct codel_opts));
1808 		}
1809 		| CODEL '(' codel_opts ')'	{
1810 			$$.qtype = ALTQT_CODEL;
1811 			$$.data.codel_opts = $3;
1812 		}
1813 		;
1814 
1815 cbqflags_list	: cbqflags_item				{ $$ |= $1; }
1816 		| cbqflags_list comma cbqflags_item	{ $$ |= $3; }
1817 		;
1818 
1819 cbqflags_item	: STRING	{
1820 			if (!strcmp($1, "default"))
1821 				$$ = CBQCLF_DEFCLASS;
1822 			else if (!strcmp($1, "borrow"))
1823 				$$ = CBQCLF_BORROW;
1824 			else if (!strcmp($1, "red"))
1825 				$$ = CBQCLF_RED;
1826 			else if (!strcmp($1, "ecn"))
1827 				$$ = CBQCLF_RED|CBQCLF_ECN;
1828 			else if (!strcmp($1, "rio"))
1829 				$$ = CBQCLF_RIO;
1830 			else if (!strcmp($1, "codel"))
1831 				$$ = CBQCLF_CODEL;
1832 			else {
1833 				yyerror("unknown cbq flag \"%s\"", $1);
1834 				free($1);
1835 				YYERROR;
1836 			}
1837 			free($1);
1838 		}
1839 		;
1840 
1841 priqflags_list	: priqflags_item			{ $$ |= $1; }
1842 		| priqflags_list comma priqflags_item	{ $$ |= $3; }
1843 		;
1844 
1845 priqflags_item	: STRING	{
1846 			if (!strcmp($1, "default"))
1847 				$$ = PRCF_DEFAULTCLASS;
1848 			else if (!strcmp($1, "red"))
1849 				$$ = PRCF_RED;
1850 			else if (!strcmp($1, "ecn"))
1851 				$$ = PRCF_RED|PRCF_ECN;
1852 			else if (!strcmp($1, "rio"))
1853 				$$ = PRCF_RIO;
1854 			else if (!strcmp($1, "codel"))
1855 				$$ = PRCF_CODEL;
1856 			else {
1857 				yyerror("unknown priq flag \"%s\"", $1);
1858 				free($1);
1859 				YYERROR;
1860 			}
1861 			free($1);
1862 		}
1863 		;
1864 
1865 hfsc_opts	:	{
1866 				bzero(&hfsc_opts,
1867 				    sizeof(struct node_hfsc_opts));
1868 			}
1869 		    hfscopts_list				{
1870 			$$ = hfsc_opts;
1871 		}
1872 		;
1873 
1874 hfscopts_list	: hfscopts_item
1875 		| hfscopts_list comma hfscopts_item
1876 		;
1877 
1878 hfscopts_item	: LINKSHARE bandwidth				{
1879 			if (hfsc_opts.linkshare.used) {
1880 				yyerror("linkshare already specified");
1881 				YYERROR;
1882 			}
1883 			hfsc_opts.linkshare.m2 = $2;
1884 			hfsc_opts.linkshare.used = 1;
1885 		}
1886 		| LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')'
1887 		    {
1888 			if ($5 < 0 || $5 > INT_MAX) {
1889 				yyerror("timing in curve out of range");
1890 				YYERROR;
1891 			}
1892 			if (hfsc_opts.linkshare.used) {
1893 				yyerror("linkshare already specified");
1894 				YYERROR;
1895 			}
1896 			hfsc_opts.linkshare.m1 = $3;
1897 			hfsc_opts.linkshare.d = $5;
1898 			hfsc_opts.linkshare.m2 = $7;
1899 			hfsc_opts.linkshare.used = 1;
1900 		}
1901 		| REALTIME bandwidth				{
1902 			if (hfsc_opts.realtime.used) {
1903 				yyerror("realtime already specified");
1904 				YYERROR;
1905 			}
1906 			hfsc_opts.realtime.m2 = $2;
1907 			hfsc_opts.realtime.used = 1;
1908 		}
1909 		| REALTIME '(' bandwidth comma NUMBER comma bandwidth ')'
1910 		    {
1911 			if ($5 < 0 || $5 > INT_MAX) {
1912 				yyerror("timing in curve out of range");
1913 				YYERROR;
1914 			}
1915 			if (hfsc_opts.realtime.used) {
1916 				yyerror("realtime already specified");
1917 				YYERROR;
1918 			}
1919 			hfsc_opts.realtime.m1 = $3;
1920 			hfsc_opts.realtime.d = $5;
1921 			hfsc_opts.realtime.m2 = $7;
1922 			hfsc_opts.realtime.used = 1;
1923 		}
1924 		| UPPERLIMIT bandwidth				{
1925 			if (hfsc_opts.upperlimit.used) {
1926 				yyerror("upperlimit already specified");
1927 				YYERROR;
1928 			}
1929 			hfsc_opts.upperlimit.m2 = $2;
1930 			hfsc_opts.upperlimit.used = 1;
1931 		}
1932 		| UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')'
1933 		    {
1934 			if ($5 < 0 || $5 > INT_MAX) {
1935 				yyerror("timing in curve out of range");
1936 				YYERROR;
1937 			}
1938 			if (hfsc_opts.upperlimit.used) {
1939 				yyerror("upperlimit already specified");
1940 				YYERROR;
1941 			}
1942 			hfsc_opts.upperlimit.m1 = $3;
1943 			hfsc_opts.upperlimit.d = $5;
1944 			hfsc_opts.upperlimit.m2 = $7;
1945 			hfsc_opts.upperlimit.used = 1;
1946 		}
1947 		| STRING	{
1948 			if (!strcmp($1, "default"))
1949 				hfsc_opts.flags |= HFCF_DEFAULTCLASS;
1950 			else if (!strcmp($1, "red"))
1951 				hfsc_opts.flags |= HFCF_RED;
1952 			else if (!strcmp($1, "ecn"))
1953 				hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
1954 			else if (!strcmp($1, "rio"))
1955 				hfsc_opts.flags |= HFCF_RIO;
1956 			else if (!strcmp($1, "codel"))
1957 				hfsc_opts.flags |= HFCF_CODEL;
1958 			else {
1959 				yyerror("unknown hfsc flag \"%s\"", $1);
1960 				free($1);
1961 				YYERROR;
1962 			}
1963 			free($1);
1964 		}
1965 		;
1966 
1967 fairq_opts	:	{
1968 				bzero(&fairq_opts,
1969 				    sizeof(struct node_fairq_opts));
1970 			}
1971 		    fairqopts_list				{
1972 			$$ = fairq_opts;
1973 		}
1974 		;
1975 
1976 fairqopts_list	: fairqopts_item
1977 		| fairqopts_list comma fairqopts_item
1978 		;
1979 
1980 fairqopts_item	: LINKSHARE bandwidth				{
1981 			if (fairq_opts.linkshare.used) {
1982 				yyerror("linkshare already specified");
1983 				YYERROR;
1984 			}
1985 			fairq_opts.linkshare.m2 = $2;
1986 			fairq_opts.linkshare.used = 1;
1987 		}
1988 		| LINKSHARE '(' bandwidth number bandwidth ')'	{
1989 			if (fairq_opts.linkshare.used) {
1990 				yyerror("linkshare already specified");
1991 				YYERROR;
1992 			}
1993 			fairq_opts.linkshare.m1 = $3;
1994 			fairq_opts.linkshare.d = $4;
1995 			fairq_opts.linkshare.m2 = $5;
1996 			fairq_opts.linkshare.used = 1;
1997 		}
1998 		| HOGS bandwidth {
1999 			fairq_opts.hogs_bw = $2;
2000 		}
2001 		| BUCKETS number {
2002 			fairq_opts.nbuckets = $2;
2003 		}
2004 		| STRING	{
2005 			if (!strcmp($1, "default"))
2006 				fairq_opts.flags |= FARF_DEFAULTCLASS;
2007 			else if (!strcmp($1, "red"))
2008 				fairq_opts.flags |= FARF_RED;
2009 			else if (!strcmp($1, "ecn"))
2010 				fairq_opts.flags |= FARF_RED|FARF_ECN;
2011 			else if (!strcmp($1, "rio"))
2012 				fairq_opts.flags |= FARF_RIO;
2013 			else if (!strcmp($1, "codel"))
2014 				fairq_opts.flags |= FARF_CODEL;
2015 			else {
2016 				yyerror("unknown fairq flag \"%s\"", $1);
2017 				free($1);
2018 				YYERROR;
2019 			}
2020 			free($1);
2021 		}
2022 		;
2023 
2024 codel_opts	:	{
2025 				bzero(&codel_opts,
2026 				    sizeof(struct codel_opts));
2027 			}
2028 		    codelopts_list				{
2029 			$$ = codel_opts;
2030 		}
2031 		;
2032 
2033 codelopts_list	: codelopts_item
2034 		| codelopts_list comma codelopts_item
2035 		;
2036 
2037 codelopts_item	: INTERVAL number				{
2038 			if (codel_opts.interval) {
2039 				yyerror("interval already specified");
2040 				YYERROR;
2041 			}
2042 			codel_opts.interval = $2;
2043 		}
2044 		| TARGET number					{
2045 			if (codel_opts.target) {
2046 				yyerror("target already specified");
2047 				YYERROR;
2048 			}
2049 			codel_opts.target = $2;
2050 		}
2051 		| STRING					{
2052 			if (!strcmp($1, "ecn"))
2053 				codel_opts.ecn = 1;
2054 			else {
2055 				yyerror("unknown codel option \"%s\"", $1);
2056 				free($1);
2057 				YYERROR;
2058 			}
2059 			free($1);
2060 		}
2061 		;
2062 
2063 qassign		: /* empty */		{ $$ = NULL; }
2064 		| qassign_item		{ $$ = $1; }
2065 		| '{' optnl qassign_list '}'	{ $$ = $3; }
2066 		;
2067 
2068 qassign_list	: qassign_item optnl		{ $$ = $1; }
2069 		| qassign_list comma qassign_item optnl	{
2070 			$1->tail->next = $3;
2071 			$1->tail = $3;
2072 			$$ = $1;
2073 		}
2074 		;
2075 
2076 qassign_item	: STRING			{
2077 			$$ = calloc(1, sizeof(struct node_queue));
2078 			if ($$ == NULL)
2079 				err(1, "qassign_item: calloc");
2080 			if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
2081 			    sizeof($$->queue)) {
2082 				yyerror("queue name '%s' too long (max "
2083 				    "%d chars)", $1, sizeof($$->queue)-1);
2084 				free($1);
2085 				free($$);
2086 				YYERROR;
2087 			}
2088 			free($1);
2089 			$$->next = NULL;
2090 			$$->tail = $$;
2091 		}
2092 		;
2093 
2094 pfrule		: action dir logquick interface route af proto fromto
2095 		    filter_opts
2096 		{
2097 			struct pfctl_rule	 r;
2098 			struct node_state_opt	*o;
2099 			struct node_proto	*proto;
2100 			int			 srctrack = 0;
2101 			int			 statelock = 0;
2102 			int			 adaptive = 0;
2103 			int			 defaults = 0;
2104 
2105 			if (check_rulestate(PFCTL_STATE_FILTER))
2106 				YYERROR;
2107 
2108 			memset(&r, 0, sizeof(r));
2109 
2110 			r.action = $1.b1;
2111 			switch ($1.b2) {
2112 			case PFRULE_RETURNRST:
2113 				r.rule_flag |= PFRULE_RETURNRST;
2114 				r.return_ttl = $1.w;
2115 				break;
2116 			case PFRULE_RETURNICMP:
2117 				r.rule_flag |= PFRULE_RETURNICMP;
2118 				r.return_icmp = $1.w;
2119 				r.return_icmp6 = $1.w2;
2120 				break;
2121 			case PFRULE_RETURN:
2122 				r.rule_flag |= PFRULE_RETURN;
2123 				r.return_icmp = $1.w;
2124 				r.return_icmp6 = $1.w2;
2125 				break;
2126 			}
2127 			r.direction = $2;
2128 			r.log = $3.log;
2129 			r.logif = $3.logif;
2130 			r.quick = $3.quick;
2131 			r.prob = $9.prob;
2132 			r.rtableid = $9.rtableid;
2133 
2134 			if ($9.marker & FOM_PRIO) {
2135 				if ($9.prio == 0)
2136 					r.prio = PF_PRIO_ZERO;
2137 				else
2138 					r.prio = $9.prio;
2139 			}
2140 			if ($9.marker & FOM_SETPRIO) {
2141 				r.set_prio[0] = $9.set_prio[0];
2142 				r.set_prio[1] = $9.set_prio[1];
2143 				r.scrub_flags |= PFSTATE_SETPRIO;
2144 			}
2145 
2146 			r.af = $6;
2147 			if ($9.tag)
2148 				if (strlcpy(r.tagname, $9.tag,
2149 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2150 					yyerror("tag too long, max %u chars",
2151 					    PF_TAG_NAME_SIZE - 1);
2152 					YYERROR;
2153 				}
2154 			if ($9.match_tag)
2155 				if (strlcpy(r.match_tagname, $9.match_tag,
2156 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2157 					yyerror("tag too long, max %u chars",
2158 					    PF_TAG_NAME_SIZE - 1);
2159 					YYERROR;
2160 				}
2161 			r.match_tag_not = $9.match_tag_not;
2162 			if (rule_label(&r, $9.label))
2163 				YYERROR;
2164 			for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++)
2165 				free($9.label[i]);
2166 			r.ridentifier = $9.ridentifier;
2167 			r.flags = $9.flags.b1;
2168 			r.flagset = $9.flags.b2;
2169 			if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
2170 				yyerror("flags always false");
2171 				YYERROR;
2172 			}
2173 			if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
2174 				for (proto = $7; proto != NULL &&
2175 				    proto->proto != IPPROTO_TCP;
2176 				    proto = proto->next)
2177 					;	/* nothing */
2178 				if (proto == NULL && $7 != NULL) {
2179 					if ($9.flags.b1 || $9.flags.b2)
2180 						yyerror(
2181 						    "flags only apply to tcp");
2182 					if ($8.src_os)
2183 						yyerror(
2184 						    "OS fingerprinting only "
2185 						    "apply to tcp");
2186 					YYERROR;
2187 				}
2188 #if 0
2189 				if (($9.flags.b1 & parse_flags("S")) == 0 &&
2190 				    $8.src_os) {
2191 					yyerror("OS fingerprinting requires "
2192 					    "the SYN TCP flag (flags S/SA)");
2193 					YYERROR;
2194 				}
2195 #endif
2196 			}
2197 
2198 			r.tos = $9.tos;
2199 			r.keep_state = $9.keep.action;
2200 			o = $9.keep.options;
2201 
2202 			/* 'keep state' by default on pass rules. */
2203 			if (!r.keep_state && !r.action &&
2204 			    !($9.marker & FOM_KEEP)) {
2205 				r.keep_state = PF_STATE_NORMAL;
2206 				o = keep_state_defaults;
2207 				defaults = 1;
2208 			}
2209 
2210 			while (o) {
2211 				struct node_state_opt	*p = o;
2212 
2213 				switch (o->type) {
2214 				case PF_STATE_OPT_MAX:
2215 					if (r.max_states) {
2216 						yyerror("state option 'max' "
2217 						    "multiple definitions");
2218 						YYERROR;
2219 					}
2220 					r.max_states = o->data.max_states;
2221 					break;
2222 				case PF_STATE_OPT_NOSYNC:
2223 					if (r.rule_flag & PFRULE_NOSYNC) {
2224 						yyerror("state option 'sync' "
2225 						    "multiple definitions");
2226 						YYERROR;
2227 					}
2228 					r.rule_flag |= PFRULE_NOSYNC;
2229 					break;
2230 				case PF_STATE_OPT_SRCTRACK:
2231 					if (srctrack) {
2232 						yyerror("state option "
2233 						    "'source-track' "
2234 						    "multiple definitions");
2235 						YYERROR;
2236 					}
2237 					srctrack =  o->data.src_track;
2238 					r.rule_flag |= PFRULE_SRCTRACK;
2239 					break;
2240 				case PF_STATE_OPT_MAX_SRC_STATES:
2241 					if (r.max_src_states) {
2242 						yyerror("state option "
2243 						    "'max-src-states' "
2244 						    "multiple definitions");
2245 						YYERROR;
2246 					}
2247 					if (o->data.max_src_states == 0) {
2248 						yyerror("'max-src-states' must "
2249 						    "be > 0");
2250 						YYERROR;
2251 					}
2252 					r.max_src_states =
2253 					    o->data.max_src_states;
2254 					r.rule_flag |= PFRULE_SRCTRACK;
2255 					break;
2256 				case PF_STATE_OPT_OVERLOAD:
2257 					if (r.overload_tblname[0]) {
2258 						yyerror("multiple 'overload' "
2259 						    "table definitions");
2260 						YYERROR;
2261 					}
2262 					if (strlcpy(r.overload_tblname,
2263 					    o->data.overload.tblname,
2264 					    PF_TABLE_NAME_SIZE) >=
2265 					    PF_TABLE_NAME_SIZE) {
2266 						yyerror("state option: "
2267 						    "strlcpy");
2268 						YYERROR;
2269 					}
2270 					r.flush = o->data.overload.flush;
2271 					break;
2272 				case PF_STATE_OPT_MAX_SRC_CONN:
2273 					if (r.max_src_conn) {
2274 						yyerror("state option "
2275 						    "'max-src-conn' "
2276 						    "multiple definitions");
2277 						YYERROR;
2278 					}
2279 					if (o->data.max_src_conn == 0) {
2280 						yyerror("'max-src-conn' "
2281 						    "must be > 0");
2282 						YYERROR;
2283 					}
2284 					r.max_src_conn =
2285 					    o->data.max_src_conn;
2286 					r.rule_flag |= PFRULE_SRCTRACK |
2287 					    PFRULE_RULESRCTRACK;
2288 					break;
2289 				case PF_STATE_OPT_MAX_SRC_CONN_RATE:
2290 					if (r.max_src_conn_rate.limit) {
2291 						yyerror("state option "
2292 						    "'max-src-conn-rate' "
2293 						    "multiple definitions");
2294 						YYERROR;
2295 					}
2296 					if (!o->data.max_src_conn_rate.limit ||
2297 					    !o->data.max_src_conn_rate.seconds) {
2298 						yyerror("'max-src-conn-rate' "
2299 						    "values must be > 0");
2300 						YYERROR;
2301 					}
2302 					if (o->data.max_src_conn_rate.limit >
2303 					    PF_THRESHOLD_MAX) {
2304 						yyerror("'max-src-conn-rate' "
2305 						    "maximum rate must be < %u",
2306 						    PF_THRESHOLD_MAX);
2307 						YYERROR;
2308 					}
2309 					r.max_src_conn_rate.limit =
2310 					    o->data.max_src_conn_rate.limit;
2311 					r.max_src_conn_rate.seconds =
2312 					    o->data.max_src_conn_rate.seconds;
2313 					r.rule_flag |= PFRULE_SRCTRACK |
2314 					    PFRULE_RULESRCTRACK;
2315 					break;
2316 				case PF_STATE_OPT_MAX_SRC_NODES:
2317 					if (r.max_src_nodes) {
2318 						yyerror("state option "
2319 						    "'max-src-nodes' "
2320 						    "multiple definitions");
2321 						YYERROR;
2322 					}
2323 					if (o->data.max_src_nodes == 0) {
2324 						yyerror("'max-src-nodes' must "
2325 						    "be > 0");
2326 						YYERROR;
2327 					}
2328 					r.max_src_nodes =
2329 					    o->data.max_src_nodes;
2330 					r.rule_flag |= PFRULE_SRCTRACK |
2331 					    PFRULE_RULESRCTRACK;
2332 					break;
2333 				case PF_STATE_OPT_STATELOCK:
2334 					if (statelock) {
2335 						yyerror("state locking option: "
2336 						    "multiple definitions");
2337 						YYERROR;
2338 					}
2339 					statelock = 1;
2340 					r.rule_flag |= o->data.statelock;
2341 					break;
2342 				case PF_STATE_OPT_SLOPPY:
2343 					if (r.rule_flag & PFRULE_STATESLOPPY) {
2344 						yyerror("state sloppy option: "
2345 						    "multiple definitions");
2346 						YYERROR;
2347 					}
2348 					r.rule_flag |= PFRULE_STATESLOPPY;
2349 					break;
2350 				case PF_STATE_OPT_TIMEOUT:
2351 					if (o->data.timeout.number ==
2352 					    PFTM_ADAPTIVE_START ||
2353 					    o->data.timeout.number ==
2354 					    PFTM_ADAPTIVE_END)
2355 						adaptive = 1;
2356 					if (r.timeout[o->data.timeout.number]) {
2357 						yyerror("state timeout %s "
2358 						    "multiple definitions",
2359 						    pf_timeouts[o->data.
2360 						    timeout.number].name);
2361 						YYERROR;
2362 					}
2363 					r.timeout[o->data.timeout.number] =
2364 					    o->data.timeout.seconds;
2365 				}
2366 				o = o->next;
2367 				if (!defaults)
2368 					free(p);
2369 			}
2370 
2371 			/* 'flags S/SA' by default on stateful rules */
2372 			if (!r.action && !r.flags && !r.flagset &&
2373 			    !$9.fragment && !($9.marker & FOM_FLAGS) &&
2374 			    r.keep_state) {
2375 				r.flags = parse_flags("S");
2376 				r.flagset =  parse_flags("SA");
2377 			}
2378 			if (!adaptive && r.max_states) {
2379 				r.timeout[PFTM_ADAPTIVE_START] =
2380 				    (r.max_states / 10) * 6;
2381 				r.timeout[PFTM_ADAPTIVE_END] =
2382 				    (r.max_states / 10) * 12;
2383 			}
2384 			if (r.rule_flag & PFRULE_SRCTRACK) {
2385 				if (srctrack == PF_SRCTRACK_GLOBAL &&
2386 				    r.max_src_nodes) {
2387 					yyerror("'max-src-nodes' is "
2388 					    "incompatible with "
2389 					    "'source-track global'");
2390 					YYERROR;
2391 				}
2392 				if (srctrack == PF_SRCTRACK_GLOBAL &&
2393 				    r.max_src_conn) {
2394 					yyerror("'max-src-conn' is "
2395 					    "incompatible with "
2396 					    "'source-track global'");
2397 					YYERROR;
2398 				}
2399 				if (srctrack == PF_SRCTRACK_GLOBAL &&
2400 				    r.max_src_conn_rate.seconds) {
2401 					yyerror("'max-src-conn-rate' is "
2402 					    "incompatible with "
2403 					    "'source-track global'");
2404 					YYERROR;
2405 				}
2406 				if (r.timeout[PFTM_SRC_NODE] <
2407 				    r.max_src_conn_rate.seconds)
2408 					r.timeout[PFTM_SRC_NODE] =
2409 					    r.max_src_conn_rate.seconds;
2410 				r.rule_flag |= PFRULE_SRCTRACK;
2411 				if (srctrack == PF_SRCTRACK_RULE)
2412 					r.rule_flag |= PFRULE_RULESRCTRACK;
2413 			}
2414 			if (r.keep_state && !statelock)
2415 				r.rule_flag |= default_statelock;
2416 
2417 			if ($9.fragment)
2418 				r.rule_flag |= PFRULE_FRAGMENT;
2419 			r.allow_opts = $9.allowopts;
2420 
2421 			decide_address_family($8.src.host, &r.af);
2422 			decide_address_family($8.dst.host, &r.af);
2423 
2424 			if ($5.rt) {
2425 				if (!r.direction) {
2426 					yyerror("direction must be explicit "
2427 					    "with rules that specify routing");
2428 					YYERROR;
2429 				}
2430 				r.rt = $5.rt;
2431 				r.rpool.opts = $5.pool_opts;
2432 				if ($5.key != NULL)
2433 					memcpy(&r.rpool.key, $5.key,
2434 					    sizeof(struct pf_poolhashkey));
2435 			}
2436 			if (r.rt) {
2437 				decide_address_family($5.host, &r.af);
2438 				remove_invalid_hosts(&$5.host, &r.af);
2439 				if ($5.host == NULL) {
2440 					yyerror("no routing address with "
2441 					    "matching address family found.");
2442 					YYERROR;
2443 				}
2444 				if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
2445 				    PF_POOL_NONE && ($5.host->next != NULL ||
2446 				    $5.host->addr.type == PF_ADDR_TABLE ||
2447 				    DYNIF_MULTIADDR($5.host->addr)))
2448 					r.rpool.opts |= PF_POOL_ROUNDROBIN;
2449 				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2450 				    PF_POOL_ROUNDROBIN &&
2451 				    disallow_table($5.host, "tables are only "
2452 				    "supported in round-robin routing pools"))
2453 					YYERROR;
2454 				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2455 				    PF_POOL_ROUNDROBIN &&
2456 				    disallow_alias($5.host, "interface (%s) "
2457 				    "is only supported in round-robin "
2458 				    "routing pools"))
2459 					YYERROR;
2460 				if ($5.host->next != NULL) {
2461 					if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2462 					    PF_POOL_ROUNDROBIN) {
2463 						yyerror("r.rpool.opts must "
2464 						    "be PF_POOL_ROUNDROBIN");
2465 						YYERROR;
2466 					}
2467 				}
2468 			}
2469 			if ($9.queues.qname != NULL) {
2470 				if (strlcpy(r.qname, $9.queues.qname,
2471 				    sizeof(r.qname)) >= sizeof(r.qname)) {
2472 					yyerror("rule qname too long (max "
2473 					    "%d chars)", sizeof(r.qname)-1);
2474 					YYERROR;
2475 				}
2476 				free($9.queues.qname);
2477 			}
2478 			if ($9.queues.pqname != NULL) {
2479 				if (strlcpy(r.pqname, $9.queues.pqname,
2480 				    sizeof(r.pqname)) >= sizeof(r.pqname)) {
2481 					yyerror("rule pqname too long (max "
2482 					    "%d chars)", sizeof(r.pqname)-1);
2483 					YYERROR;
2484 				}
2485 				free($9.queues.pqname);
2486 			}
2487 #ifdef __FreeBSD__
2488 			r.divert.port = $9.divert.port;
2489 #else
2490 			if ((r.divert.port = $9.divert.port)) {
2491 				if (r.direction == PF_OUT) {
2492 					if ($9.divert.addr) {
2493 						yyerror("address specified "
2494 						    "for outgoing divert");
2495 						YYERROR;
2496 					}
2497 					bzero(&r.divert.addr,
2498 					    sizeof(r.divert.addr));
2499 				} else {
2500 					if (!$9.divert.addr) {
2501 						yyerror("no address specified "
2502 						    "for incoming divert");
2503 						YYERROR;
2504 					}
2505 					if ($9.divert.addr->af != r.af) {
2506 						yyerror("address family "
2507 						    "mismatch for divert");
2508 						YYERROR;
2509 					}
2510 					r.divert.addr =
2511 					    $9.divert.addr->addr.v.a.addr;
2512 				}
2513 			}
2514 #endif
2515 
2516 			if ($9.dnpipe || $9.dnrpipe) {
2517 				r.dnpipe = $9.dnpipe;
2518 				r.dnrpipe = $9.dnrpipe;
2519 				if ($9.free_flags & PFRULE_DN_IS_PIPE)
2520 					r.free_flags |= PFRULE_DN_IS_PIPE;
2521 				else
2522 					r.free_flags |= PFRULE_DN_IS_QUEUE;
2523 			}
2524 
2525 			expand_rule(&r, $4, $5.host, $7, $8.src_os,
2526 			    $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
2527 			    $9.uid, $9.gid, $9.icmpspec, "");
2528 		}
2529 		;
2530 
2531 filter_opts	:	{
2532 				bzero(&filter_opts, sizeof filter_opts);
2533 				filter_opts.rtableid = -1;
2534 			}
2535 		    filter_opts_l
2536 			{ $$ = filter_opts; }
2537 		| /* empty */	{
2538 			bzero(&filter_opts, sizeof filter_opts);
2539 			filter_opts.rtableid = -1;
2540 			$$ = filter_opts;
2541 		}
2542 		;
2543 
2544 filter_opts_l	: filter_opts_l filter_opt
2545 		| filter_opt
2546 		;
2547 
2548 filter_opt	: USER uids {
2549 			if (filter_opts.uid)
2550 				$2->tail->next = filter_opts.uid;
2551 			filter_opts.uid = $2;
2552 		}
2553 		| GROUP gids {
2554 			if (filter_opts.gid)
2555 				$2->tail->next = filter_opts.gid;
2556 			filter_opts.gid = $2;
2557 		}
2558 		| flags {
2559 			if (filter_opts.marker & FOM_FLAGS) {
2560 				yyerror("flags cannot be redefined");
2561 				YYERROR;
2562 			}
2563 			filter_opts.marker |= FOM_FLAGS;
2564 			filter_opts.flags.b1 |= $1.b1;
2565 			filter_opts.flags.b2 |= $1.b2;
2566 			filter_opts.flags.w |= $1.w;
2567 			filter_opts.flags.w2 |= $1.w2;
2568 		}
2569 		| icmpspec {
2570 			if (filter_opts.marker & FOM_ICMP) {
2571 				yyerror("icmp-type cannot be redefined");
2572 				YYERROR;
2573 			}
2574 			filter_opts.marker |= FOM_ICMP;
2575 			filter_opts.icmpspec = $1;
2576 		}
2577 		| PRIO NUMBER {
2578 			if (filter_opts.marker & FOM_PRIO) {
2579 				yyerror("prio cannot be redefined");
2580 				YYERROR;
2581 			}
2582 			if ($2 < 0 || $2 > PF_PRIO_MAX) {
2583 				yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2584 				YYERROR;
2585 			}
2586 			filter_opts.marker |= FOM_PRIO;
2587 			filter_opts.prio = $2;
2588 		}
2589 		| TOS tos {
2590 			if (filter_opts.marker & FOM_TOS) {
2591 				yyerror("tos cannot be redefined");
2592 				YYERROR;
2593 			}
2594 			filter_opts.marker |= FOM_TOS;
2595 			filter_opts.tos = $2;
2596 		}
2597 		| keep {
2598 			if (filter_opts.marker & FOM_KEEP) {
2599 				yyerror("modulate or keep cannot be redefined");
2600 				YYERROR;
2601 			}
2602 			filter_opts.marker |= FOM_KEEP;
2603 			filter_opts.keep.action = $1.action;
2604 			filter_opts.keep.options = $1.options;
2605 		}
2606 		| RIDENTIFIER number {
2607 			filter_opts.ridentifier = $2;
2608 		}
2609 		| FRAGMENT {
2610 			filter_opts.fragment = 1;
2611 		}
2612 		| ALLOWOPTS {
2613 			filter_opts.allowopts = 1;
2614 		}
2615 		| label	{
2616 			if (filter_opts.labelcount >= PF_RULE_MAX_LABEL_COUNT) {
2617 				yyerror("label can only be used %d times", PF_RULE_MAX_LABEL_COUNT);
2618 				YYERROR;
2619 			}
2620 			filter_opts.label[filter_opts.labelcount++] = $1;
2621 		}
2622 		| qname	{
2623 			if (filter_opts.queues.qname) {
2624 				yyerror("queue cannot be redefined");
2625 				YYERROR;
2626 			}
2627 			filter_opts.queues = $1;
2628 		}
2629 		| DNPIPE number {
2630 			filter_opts.dnpipe = $2;
2631 			filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
2632 		}
2633 		| DNPIPE '(' number ')' {
2634 			filter_opts.dnpipe = $3;
2635 			filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
2636 		}
2637 		| DNPIPE '(' number comma number ')' {
2638 			filter_opts.dnrpipe = $5;
2639 			filter_opts.dnpipe = $3;
2640 			filter_opts.free_flags |= PFRULE_DN_IS_PIPE;
2641 		}
2642 		| DNQUEUE number {
2643 			filter_opts.dnpipe = $2;
2644 			filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
2645 		}
2646 		| DNQUEUE '(' number comma number ')' {
2647 			filter_opts.dnrpipe = $5;
2648 			filter_opts.dnpipe = $3;
2649 			filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
2650 		}
2651 		| DNQUEUE '(' number ')' {
2652 			filter_opts.dnpipe = $3;
2653 			filter_opts.free_flags |= PFRULE_DN_IS_QUEUE;
2654 		}
2655 		| TAG string				{
2656 			filter_opts.tag = $2;
2657 		}
2658 		| not TAGGED string			{
2659 			filter_opts.match_tag = $3;
2660 			filter_opts.match_tag_not = $1;
2661 		}
2662 		| PROBABILITY probability		{
2663 			double	p;
2664 
2665 			p = floor($2 * UINT_MAX + 0.5);
2666 			if (p < 0.0 || p > UINT_MAX) {
2667 				yyerror("invalid probability: %lf", p);
2668 				YYERROR;
2669 			}
2670 			filter_opts.prob = (u_int32_t)p;
2671 			if (filter_opts.prob == 0)
2672 				filter_opts.prob = 1;
2673 		}
2674 		| RTABLE NUMBER				{
2675 			if ($2 < 0 || $2 > rt_tableid_max()) {
2676 				yyerror("invalid rtable id");
2677 				YYERROR;
2678 			}
2679 			filter_opts.rtableid = $2;
2680 		}
2681 		| DIVERTTO portplain {
2682 #ifdef __FreeBSD__
2683 			filter_opts.divert.port = $2.a;
2684 			if (!filter_opts.divert.port) {
2685 				yyerror("invalid divert port: %u", ntohs($2.a));
2686 				YYERROR;
2687 			}
2688 #endif
2689 		}
2690 		| DIVERTTO STRING PORT portplain {
2691 #ifndef __FreeBSD__
2692 			if ((filter_opts.divert.addr = host($2)) == NULL) {
2693 				yyerror("could not parse divert address: %s",
2694 				    $2);
2695 				free($2);
2696 				YYERROR;
2697 			}
2698 #else
2699 			if ($2)
2700 #endif
2701 			free($2);
2702 			filter_opts.divert.port = $4.a;
2703 			if (!filter_opts.divert.port) {
2704 				yyerror("invalid divert port: %u", ntohs($4.a));
2705 				YYERROR;
2706 			}
2707 		}
2708 		| DIVERTREPLY {
2709 #ifdef __FreeBSD__
2710 			yyerror("divert-reply has no meaning in FreeBSD pf(4)");
2711 			YYERROR;
2712 #else
2713 			filter_opts.divert.port = 1;	/* some random value */
2714 #endif
2715 		}
2716 		| filter_sets
2717 		;
2718 
2719 filter_sets	: SET '(' filter_sets_l ')'	{ $$ = filter_opts; }
2720 		| SET filter_set		{ $$ = filter_opts; }
2721 		;
2722 
2723 filter_sets_l	: filter_sets_l comma filter_set
2724 		| filter_set
2725 		;
2726 
2727 filter_set	: prio {
2728 			if (filter_opts.marker & FOM_SETPRIO) {
2729 				yyerror("prio cannot be redefined");
2730 				YYERROR;
2731 			}
2732 			filter_opts.marker |= FOM_SETPRIO;
2733 			filter_opts.set_prio[0] = $1.b1;
2734 			filter_opts.set_prio[1] = $1.b2;
2735 		}
2736 prio		: PRIO NUMBER {
2737 			if ($2 < 0 || $2 > PF_PRIO_MAX) {
2738 				yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2739 				YYERROR;
2740 			}
2741 			$$.b1 = $$.b2 = $2;
2742 		}
2743 		| PRIO '(' NUMBER comma NUMBER ')' {
2744 			if ($3 < 0 || $3 > PF_PRIO_MAX ||
2745 			    $5 < 0 || $5 > PF_PRIO_MAX) {
2746 				yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2747 				YYERROR;
2748 			}
2749 			$$.b1 = $3;
2750 			$$.b2 = $5;
2751 		}
2752 		;
2753 
2754 probability	: STRING				{
2755 			char	*e;
2756 			double	 p = strtod($1, &e);
2757 
2758 			if (*e == '%') {
2759 				p *= 0.01;
2760 				e++;
2761 			}
2762 			if (*e) {
2763 				yyerror("invalid probability: %s", $1);
2764 				free($1);
2765 				YYERROR;
2766 			}
2767 			free($1);
2768 			$$ = p;
2769 		}
2770 		| NUMBER				{
2771 			$$ = (double)$1;
2772 		}
2773 		;
2774 
2775 
2776 action		: PASS 			{
2777 			$$.b1 = PF_PASS;
2778 			$$.b2 = failpolicy;
2779 			$$.w = returnicmpdefault;
2780 			$$.w2 = returnicmp6default;
2781 		}
2782 		| MATCH			{ $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; }
2783 		| BLOCK blockspec	{ $$ = $2; $$.b1 = PF_DROP; }
2784 		;
2785 
2786 blockspec	: /* empty */		{
2787 			$$.b2 = blockpolicy;
2788 			$$.w = returnicmpdefault;
2789 			$$.w2 = returnicmp6default;
2790 		}
2791 		| DROP			{
2792 			$$.b2 = PFRULE_DROP;
2793 			$$.w = 0;
2794 			$$.w2 = 0;
2795 		}
2796 		| RETURNRST		{
2797 			$$.b2 = PFRULE_RETURNRST;
2798 			$$.w = 0;
2799 			$$.w2 = 0;
2800 		}
2801 		| RETURNRST '(' TTL NUMBER ')'	{
2802 			if ($4 < 0 || $4 > 255) {
2803 				yyerror("illegal ttl value %d", $4);
2804 				YYERROR;
2805 			}
2806 			$$.b2 = PFRULE_RETURNRST;
2807 			$$.w = $4;
2808 			$$.w2 = 0;
2809 		}
2810 		| RETURNICMP		{
2811 			$$.b2 = PFRULE_RETURNICMP;
2812 			$$.w = returnicmpdefault;
2813 			$$.w2 = returnicmp6default;
2814 		}
2815 		| RETURNICMP6		{
2816 			$$.b2 = PFRULE_RETURNICMP;
2817 			$$.w = returnicmpdefault;
2818 			$$.w2 = returnicmp6default;
2819 		}
2820 		| RETURNICMP '(' reticmpspec ')'	{
2821 			$$.b2 = PFRULE_RETURNICMP;
2822 			$$.w = $3;
2823 			$$.w2 = returnicmpdefault;
2824 		}
2825 		| RETURNICMP6 '(' reticmp6spec ')'	{
2826 			$$.b2 = PFRULE_RETURNICMP;
2827 			$$.w = returnicmpdefault;
2828 			$$.w2 = $3;
2829 		}
2830 		| RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
2831 			$$.b2 = PFRULE_RETURNICMP;
2832 			$$.w = $3;
2833 			$$.w2 = $5;
2834 		}
2835 		| RETURN {
2836 			$$.b2 = PFRULE_RETURN;
2837 			$$.w = returnicmpdefault;
2838 			$$.w2 = returnicmp6default;
2839 		}
2840 		;
2841 
2842 reticmpspec	: STRING			{
2843 			if (!($$ = parseicmpspec($1, AF_INET))) {
2844 				free($1);
2845 				YYERROR;
2846 			}
2847 			free($1);
2848 		}
2849 		| NUMBER			{
2850 			u_int8_t		icmptype;
2851 
2852 			if ($1 < 0 || $1 > 255) {
2853 				yyerror("invalid icmp code %lu", $1);
2854 				YYERROR;
2855 			}
2856 			icmptype = returnicmpdefault >> 8;
2857 			$$ = (icmptype << 8 | $1);
2858 		}
2859 		;
2860 
2861 reticmp6spec	: STRING			{
2862 			if (!($$ = parseicmpspec($1, AF_INET6))) {
2863 				free($1);
2864 				YYERROR;
2865 			}
2866 			free($1);
2867 		}
2868 		| NUMBER			{
2869 			u_int8_t		icmptype;
2870 
2871 			if ($1 < 0 || $1 > 255) {
2872 				yyerror("invalid icmp code %lu", $1);
2873 				YYERROR;
2874 			}
2875 			icmptype = returnicmp6default >> 8;
2876 			$$ = (icmptype << 8 | $1);
2877 		}
2878 		;
2879 
2880 dir		: /* empty */			{ $$ = PF_INOUT; }
2881 		| IN				{ $$ = PF_IN; }
2882 		| OUT				{ $$ = PF_OUT; }
2883 		;
2884 
2885 quick		: /* empty */			{ $$.quick = 0; }
2886 		| QUICK				{ $$.quick = 1; }
2887 		;
2888 
2889 logquick	: /* empty */	{ $$.log = 0; $$.quick = 0; $$.logif = 0; }
2890 		| log		{ $$ = $1; $$.quick = 0; }
2891 		| QUICK		{ $$.quick = 1; $$.log = 0; $$.logif = 0; }
2892 		| log QUICK	{ $$ = $1; $$.quick = 1; }
2893 		| QUICK log	{ $$ = $2; $$.quick = 1; }
2894 		;
2895 
2896 log		: LOG			{ $$.log = PF_LOG; $$.logif = 0; }
2897 		| LOG '(' logopts ')'	{
2898 			$$.log = PF_LOG | $3.log;
2899 			$$.logif = $3.logif;
2900 		}
2901 		;
2902 
2903 logopts		: logopt			{ $$ = $1; }
2904 		| logopts comma logopt		{
2905 			$$.log = $1.log | $3.log;
2906 			$$.logif = $3.logif;
2907 			if ($$.logif == 0)
2908 				$$.logif = $1.logif;
2909 		}
2910 		;
2911 
2912 logopt		: ALL		{ $$.log = PF_LOG_ALL; $$.logif = 0; }
2913 		| USER		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2914 		| GROUP		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2915 		| TO string	{
2916 			const char	*errstr;
2917 			u_int		 i;
2918 
2919 			$$.log = 0;
2920 			if (strncmp($2, "pflog", 5)) {
2921 				yyerror("%s: should be a pflog interface", $2);
2922 				free($2);
2923 				YYERROR;
2924 			}
2925 			i = strtonum($2 + 5, 0, 255, &errstr);
2926 			if (errstr) {
2927 				yyerror("%s: %s", $2, errstr);
2928 				free($2);
2929 				YYERROR;
2930 			}
2931 			free($2);
2932 			$$.logif = i;
2933 		}
2934 		;
2935 
2936 interface	: /* empty */			{ $$ = NULL; }
2937 		| ON if_item_not		{ $$ = $2; }
2938 		| ON '{' optnl if_list '}'	{ $$ = $4; }
2939 		;
2940 
2941 if_list		: if_item_not optnl		{ $$ = $1; }
2942 		| if_list comma if_item_not optnl	{
2943 			$1->tail->next = $3;
2944 			$1->tail = $3;
2945 			$$ = $1;
2946 		}
2947 		;
2948 
2949 if_item_not	: not if_item			{ $$ = $2; $$->not = $1; }
2950 		;
2951 
2952 if_item		: STRING			{
2953 			struct node_host	*n;
2954 
2955 			$$ = calloc(1, sizeof(struct node_if));
2956 			if ($$ == NULL)
2957 				err(1, "if_item: calloc");
2958 			if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2959 			    sizeof($$->ifname)) {
2960 				free($1);
2961 				free($$);
2962 				yyerror("interface name too long");
2963 				YYERROR;
2964 			}
2965 
2966 			if ((n = ifa_exists($1)) != NULL)
2967 				$$->ifa_flags = n->ifa_flags;
2968 
2969 			free($1);
2970 			$$->not = 0;
2971 			$$->next = NULL;
2972 			$$->tail = $$;
2973 		}
2974 		;
2975 
2976 af		: /* empty */			{ $$ = 0; }
2977 		| INET				{ $$ = AF_INET; }
2978 		| INET6				{ $$ = AF_INET6; }
2979 		;
2980 
2981 proto		: /* empty */				{ $$ = NULL; }
2982 		| PROTO proto_item			{ $$ = $2; }
2983 		| PROTO '{' optnl proto_list '}'	{ $$ = $4; }
2984 		;
2985 
2986 proto_list	: proto_item optnl		{ $$ = $1; }
2987 		| proto_list comma proto_item optnl	{
2988 			$1->tail->next = $3;
2989 			$1->tail = $3;
2990 			$$ = $1;
2991 		}
2992 		;
2993 
2994 proto_item	: protoval			{
2995 			u_int8_t	pr;
2996 
2997 			pr = (u_int8_t)$1;
2998 			if (pr == 0) {
2999 				yyerror("proto 0 cannot be used");
3000 				YYERROR;
3001 			}
3002 			$$ = calloc(1, sizeof(struct node_proto));
3003 			if ($$ == NULL)
3004 				err(1, "proto_item: calloc");
3005 			$$->proto = pr;
3006 			$$->next = NULL;
3007 			$$->tail = $$;
3008 		}
3009 		;
3010 
3011 protoval	: STRING			{
3012 			struct protoent	*p;
3013 
3014 			p = getprotobyname($1);
3015 			if (p == NULL) {
3016 				yyerror("unknown protocol %s", $1);
3017 				free($1);
3018 				YYERROR;
3019 			}
3020 			$$ = p->p_proto;
3021 			free($1);
3022 		}
3023 		| NUMBER			{
3024 			if ($1 < 0 || $1 > 255) {
3025 				yyerror("protocol outside range");
3026 				YYERROR;
3027 			}
3028 		}
3029 		;
3030 
3031 fromto		: ALL				{
3032 			$$.src.host = NULL;
3033 			$$.src.port = NULL;
3034 			$$.dst.host = NULL;
3035 			$$.dst.port = NULL;
3036 			$$.src_os = NULL;
3037 		}
3038 		| from os to			{
3039 			$$.src = $1;
3040 			$$.src_os = $2;
3041 			$$.dst = $3;
3042 		}
3043 		;
3044 
3045 os		: /* empty */			{ $$ = NULL; }
3046 		| OS xos			{ $$ = $2; }
3047 		| OS '{' optnl os_list '}'	{ $$ = $4; }
3048 		;
3049 
3050 xos		: STRING {
3051 			$$ = calloc(1, sizeof(struct node_os));
3052 			if ($$ == NULL)
3053 				err(1, "os: calloc");
3054 			$$->os = $1;
3055 			$$->tail = $$;
3056 		}
3057 		;
3058 
3059 os_list		: xos optnl 			{ $$ = $1; }
3060 		| os_list comma xos optnl	{
3061 			$1->tail->next = $3;
3062 			$1->tail = $3;
3063 			$$ = $1;
3064 		}
3065 		;
3066 
3067 from		: /* empty */			{
3068 			$$.host = NULL;
3069 			$$.port = NULL;
3070 		}
3071 		| FROM ipportspec		{
3072 			$$ = $2;
3073 		}
3074 		;
3075 
3076 to		: /* empty */			{
3077 			$$.host = NULL;
3078 			$$.port = NULL;
3079 		}
3080 		| TO ipportspec		{
3081 			if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
3082 			    "not permitted in a destination address"))
3083 				YYERROR;
3084 			$$ = $2;
3085 		}
3086 		;
3087 
3088 ipportspec	: ipspec			{
3089 			$$.host = $1;
3090 			$$.port = NULL;
3091 		}
3092 		| ipspec PORT portspec		{
3093 			$$.host = $1;
3094 			$$.port = $3;
3095 		}
3096 		| PORT portspec			{
3097 			$$.host = NULL;
3098 			$$.port = $2;
3099 		}
3100 		;
3101 
3102 optnl		: '\n' optnl
3103 		|
3104 		;
3105 
3106 ipspec		: ANY				{ $$ = NULL; }
3107 		| xhost				{ $$ = $1; }
3108 		| '{' optnl host_list '}'	{ $$ = $3; }
3109 		;
3110 
3111 toipspec	: TO ipspec			{ $$ = $2; }
3112 		| /* empty */			{ $$ = NULL; }
3113 		;
3114 
3115 host_list	: ipspec optnl			{ $$ = $1; }
3116 		| host_list comma ipspec optnl	{
3117 			if ($3 == NULL)
3118 				$$ = $1;
3119 			else if ($1 == NULL)
3120 				$$ = $3;
3121 			else {
3122 				$1->tail->next = $3;
3123 				$1->tail = $3->tail;
3124 				$$ = $1;
3125 			}
3126 		}
3127 		;
3128 
3129 xhost		: not host			{
3130 			struct node_host	*n;
3131 
3132 			for (n = $2; n != NULL; n = n->next)
3133 				n->not = $1;
3134 			$$ = $2;
3135 		}
3136 		| not NOROUTE			{
3137 			$$ = calloc(1, sizeof(struct node_host));
3138 			if ($$ == NULL)
3139 				err(1, "xhost: calloc");
3140 			$$->addr.type = PF_ADDR_NOROUTE;
3141 			$$->next = NULL;
3142 			$$->not = $1;
3143 			$$->tail = $$;
3144 		}
3145 		| not URPFFAILED		{
3146 			$$ = calloc(1, sizeof(struct node_host));
3147 			if ($$ == NULL)
3148 				err(1, "xhost: calloc");
3149 			$$->addr.type = PF_ADDR_URPFFAILED;
3150 			$$->next = NULL;
3151 			$$->not = $1;
3152 			$$->tail = $$;
3153 		}
3154 		;
3155 
3156 host		: STRING			{
3157 			if (($$ = host($1)) == NULL)	{
3158 				/* error. "any" is handled elsewhere */
3159 				free($1);
3160 				yyerror("could not parse host specification");
3161 				YYERROR;
3162 			}
3163 			free($1);
3164 
3165 		}
3166 		| STRING '-' STRING		{
3167 			struct node_host *b, *e;
3168 
3169 			if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
3170 				free($1);
3171 				free($3);
3172 				yyerror("could not parse host specification");
3173 				YYERROR;
3174 			}
3175 			if (b->af != e->af ||
3176 			    b->addr.type != PF_ADDR_ADDRMASK ||
3177 			    e->addr.type != PF_ADDR_ADDRMASK ||
3178 			    unmask(&b->addr.v.a.mask, b->af) !=
3179 			    (b->af == AF_INET ? 32 : 128) ||
3180 			    unmask(&e->addr.v.a.mask, e->af) !=
3181 			    (e->af == AF_INET ? 32 : 128) ||
3182 			    b->next != NULL || b->not ||
3183 			    e->next != NULL || e->not) {
3184 				free(b);
3185 				free(e);
3186 				free($1);
3187 				free($3);
3188 				yyerror("invalid address range");
3189 				YYERROR;
3190 			}
3191 			memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
3192 			    sizeof(b->addr.v.a.mask));
3193 			b->addr.type = PF_ADDR_RANGE;
3194 			$$ = b;
3195 			free(e);
3196 			free($1);
3197 			free($3);
3198 		}
3199 		| STRING '/' NUMBER		{
3200 			char	*buf;
3201 
3202 			if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1)
3203 				err(1, "host: asprintf");
3204 			free($1);
3205 			if (($$ = host(buf)) == NULL)	{
3206 				/* error. "any" is handled elsewhere */
3207 				free(buf);
3208 				yyerror("could not parse host specification");
3209 				YYERROR;
3210 			}
3211 			free(buf);
3212 		}
3213 		| NUMBER '/' NUMBER		{
3214 			char	*buf;
3215 
3216 			/* ie. for 10/8 parsing */
3217 #ifdef __FreeBSD__
3218 			if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1)
3219 #else
3220 			if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
3221 #endif
3222 				err(1, "host: asprintf");
3223 			if (($$ = host(buf)) == NULL)	{
3224 				/* error. "any" is handled elsewhere */
3225 				free(buf);
3226 				yyerror("could not parse host specification");
3227 				YYERROR;
3228 			}
3229 			free(buf);
3230 		}
3231 		| dynaddr
3232 		| dynaddr '/' NUMBER		{
3233 			struct node_host	*n;
3234 
3235 			if ($3 < 0 || $3 > 128) {
3236 				yyerror("bit number too big");
3237 				YYERROR;
3238 			}
3239 			$$ = $1;
3240 			for (n = $1; n != NULL; n = n->next)
3241 				set_ipmask(n, $3);
3242 		}
3243 		| '<' STRING '>'	{
3244 			if (strlen($2) >= PF_TABLE_NAME_SIZE) {
3245 				yyerror("table name '%s' too long", $2);
3246 				free($2);
3247 				YYERROR;
3248 			}
3249 			$$ = calloc(1, sizeof(struct node_host));
3250 			if ($$ == NULL)
3251 				err(1, "host: calloc");
3252 			$$->addr.type = PF_ADDR_TABLE;
3253 			if (strlcpy($$->addr.v.tblname, $2,
3254 			    sizeof($$->addr.v.tblname)) >=
3255 			    sizeof($$->addr.v.tblname))
3256 				errx(1, "host: strlcpy");
3257 			free($2);
3258 			$$->next = NULL;
3259 			$$->tail = $$;
3260 		}
3261 		;
3262 
3263 number		: NUMBER
3264 		| STRING		{
3265 			u_long	ulval;
3266 
3267 			if (atoul($1, &ulval) == -1) {
3268 				yyerror("%s is not a number", $1);
3269 				free($1);
3270 				YYERROR;
3271 			} else
3272 				$$ = ulval;
3273 			free($1);
3274 		}
3275 		;
3276 
3277 dynaddr		: '(' STRING ')'		{
3278 			int	 flags = 0;
3279 			char	*p, *op;
3280 
3281 			op = $2;
3282 			if (!isalpha(op[0])) {
3283 				yyerror("invalid interface name '%s'", op);
3284 				free(op);
3285 				YYERROR;
3286 			}
3287 			while ((p = strrchr($2, ':')) != NULL) {
3288 				if (!strcmp(p+1, "network"))
3289 					flags |= PFI_AFLAG_NETWORK;
3290 				else if (!strcmp(p+1, "broadcast"))
3291 					flags |= PFI_AFLAG_BROADCAST;
3292 				else if (!strcmp(p+1, "peer"))
3293 					flags |= PFI_AFLAG_PEER;
3294 				else if (!strcmp(p+1, "0"))
3295 					flags |= PFI_AFLAG_NOALIAS;
3296 				else {
3297 					yyerror("interface %s has bad modifier",
3298 					    $2);
3299 					free(op);
3300 					YYERROR;
3301 				}
3302 				*p = '\0';
3303 			}
3304 			if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
3305 				free(op);
3306 				yyerror("illegal combination of "
3307 				    "interface modifiers");
3308 				YYERROR;
3309 			}
3310 			$$ = calloc(1, sizeof(struct node_host));
3311 			if ($$ == NULL)
3312 				err(1, "address: calloc");
3313 			$$->af = 0;
3314 			set_ipmask($$, 128);
3315 			$$->addr.type = PF_ADDR_DYNIFTL;
3316 			$$->addr.iflags = flags;
3317 			if (strlcpy($$->addr.v.ifname, $2,
3318 			    sizeof($$->addr.v.ifname)) >=
3319 			    sizeof($$->addr.v.ifname)) {
3320 				free(op);
3321 				free($$);
3322 				yyerror("interface name too long");
3323 				YYERROR;
3324 			}
3325 			free(op);
3326 			$$->next = NULL;
3327 			$$->tail = $$;
3328 		}
3329 		;
3330 
3331 portspec	: port_item			{ $$ = $1; }
3332 		| '{' optnl port_list '}'	{ $$ = $3; }
3333 		;
3334 
3335 port_list	: port_item optnl		{ $$ = $1; }
3336 		| port_list comma port_item optnl	{
3337 			$1->tail->next = $3;
3338 			$1->tail = $3;
3339 			$$ = $1;
3340 		}
3341 		;
3342 
3343 port_item	: portrange			{
3344 			$$ = calloc(1, sizeof(struct node_port));
3345 			if ($$ == NULL)
3346 				err(1, "port_item: calloc");
3347 			$$->port[0] = $1.a;
3348 			$$->port[1] = $1.b;
3349 			if ($1.t)
3350 				$$->op = PF_OP_RRG;
3351 			else
3352 				$$->op = PF_OP_EQ;
3353 			$$->next = NULL;
3354 			$$->tail = $$;
3355 		}
3356 		| unaryop portrange	{
3357 			if ($2.t) {
3358 				yyerror("':' cannot be used with an other "
3359 				    "port operator");
3360 				YYERROR;
3361 			}
3362 			$$ = calloc(1, sizeof(struct node_port));
3363 			if ($$ == NULL)
3364 				err(1, "port_item: calloc");
3365 			$$->port[0] = $2.a;
3366 			$$->port[1] = $2.b;
3367 			$$->op = $1;
3368 			$$->next = NULL;
3369 			$$->tail = $$;
3370 		}
3371 		| portrange PORTBINARY portrange	{
3372 			if ($1.t || $3.t) {
3373 				yyerror("':' cannot be used with an other "
3374 				    "port operator");
3375 				YYERROR;
3376 			}
3377 			$$ = calloc(1, sizeof(struct node_port));
3378 			if ($$ == NULL)
3379 				err(1, "port_item: calloc");
3380 			$$->port[0] = $1.a;
3381 			$$->port[1] = $3.a;
3382 			$$->op = $2;
3383 			$$->next = NULL;
3384 			$$->tail = $$;
3385 		}
3386 		;
3387 
3388 portplain	: numberstring			{
3389 			if (parseport($1, &$$, 0) == -1) {
3390 				free($1);
3391 				YYERROR;
3392 			}
3393 			free($1);
3394 		}
3395 		;
3396 
3397 portrange	: numberstring			{
3398 			if (parseport($1, &$$, PPORT_RANGE) == -1) {
3399 				free($1);
3400 				YYERROR;
3401 			}
3402 			free($1);
3403 		}
3404 		;
3405 
3406 uids		: uid_item			{ $$ = $1; }
3407 		| '{' optnl uid_list '}'	{ $$ = $3; }
3408 		;
3409 
3410 uid_list	: uid_item optnl		{ $$ = $1; }
3411 		| uid_list comma uid_item optnl	{
3412 			$1->tail->next = $3;
3413 			$1->tail = $3;
3414 			$$ = $1;
3415 		}
3416 		;
3417 
3418 uid_item	: uid				{
3419 			$$ = calloc(1, sizeof(struct node_uid));
3420 			if ($$ == NULL)
3421 				err(1, "uid_item: calloc");
3422 			$$->uid[0] = $1;
3423 			$$->uid[1] = $1;
3424 			$$->op = PF_OP_EQ;
3425 			$$->next = NULL;
3426 			$$->tail = $$;
3427 		}
3428 		| unaryop uid			{
3429 			if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3430 				yyerror("user unknown requires operator = or "
3431 				    "!=");
3432 				YYERROR;
3433 			}
3434 			$$ = calloc(1, sizeof(struct node_uid));
3435 			if ($$ == NULL)
3436 				err(1, "uid_item: calloc");
3437 			$$->uid[0] = $2;
3438 			$$->uid[1] = $2;
3439 			$$->op = $1;
3440 			$$->next = NULL;
3441 			$$->tail = $$;
3442 		}
3443 		| uid PORTBINARY uid		{
3444 			if ($1 == UID_MAX || $3 == UID_MAX) {
3445 				yyerror("user unknown requires operator = or "
3446 				    "!=");
3447 				YYERROR;
3448 			}
3449 			$$ = calloc(1, sizeof(struct node_uid));
3450 			if ($$ == NULL)
3451 				err(1, "uid_item: calloc");
3452 			$$->uid[0] = $1;
3453 			$$->uid[1] = $3;
3454 			$$->op = $2;
3455 			$$->next = NULL;
3456 			$$->tail = $$;
3457 		}
3458 		;
3459 
3460 uid		: STRING			{
3461 			if (!strcmp($1, "unknown"))
3462 				$$ = UID_MAX;
3463 			else {
3464 				struct passwd	*pw;
3465 
3466 				if ((pw = getpwnam($1)) == NULL) {
3467 					yyerror("unknown user %s", $1);
3468 					free($1);
3469 					YYERROR;
3470 				}
3471 				$$ = pw->pw_uid;
3472 			}
3473 			free($1);
3474 		}
3475 		| NUMBER			{
3476 			if ($1 < 0 || $1 >= UID_MAX) {
3477 				yyerror("illegal uid value %lu", $1);
3478 				YYERROR;
3479 			}
3480 			$$ = $1;
3481 		}
3482 		;
3483 
3484 gids		: gid_item			{ $$ = $1; }
3485 		| '{' optnl gid_list '}'	{ $$ = $3; }
3486 		;
3487 
3488 gid_list	: gid_item optnl		{ $$ = $1; }
3489 		| gid_list comma gid_item optnl	{
3490 			$1->tail->next = $3;
3491 			$1->tail = $3;
3492 			$$ = $1;
3493 		}
3494 		;
3495 
3496 gid_item	: gid				{
3497 			$$ = calloc(1, sizeof(struct node_gid));
3498 			if ($$ == NULL)
3499 				err(1, "gid_item: calloc");
3500 			$$->gid[0] = $1;
3501 			$$->gid[1] = $1;
3502 			$$->op = PF_OP_EQ;
3503 			$$->next = NULL;
3504 			$$->tail = $$;
3505 		}
3506 		| unaryop gid			{
3507 			if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3508 				yyerror("group unknown requires operator = or "
3509 				    "!=");
3510 				YYERROR;
3511 			}
3512 			$$ = calloc(1, sizeof(struct node_gid));
3513 			if ($$ == NULL)
3514 				err(1, "gid_item: calloc");
3515 			$$->gid[0] = $2;
3516 			$$->gid[1] = $2;
3517 			$$->op = $1;
3518 			$$->next = NULL;
3519 			$$->tail = $$;
3520 		}
3521 		| gid PORTBINARY gid		{
3522 			if ($1 == GID_MAX || $3 == GID_MAX) {
3523 				yyerror("group unknown requires operator = or "
3524 				    "!=");
3525 				YYERROR;
3526 			}
3527 			$$ = calloc(1, sizeof(struct node_gid));
3528 			if ($$ == NULL)
3529 				err(1, "gid_item: calloc");
3530 			$$->gid[0] = $1;
3531 			$$->gid[1] = $3;
3532 			$$->op = $2;
3533 			$$->next = NULL;
3534 			$$->tail = $$;
3535 		}
3536 		;
3537 
3538 gid		: STRING			{
3539 			if (!strcmp($1, "unknown"))
3540 				$$ = GID_MAX;
3541 			else {
3542 				struct group	*grp;
3543 
3544 				if ((grp = getgrnam($1)) == NULL) {
3545 					yyerror("unknown group %s", $1);
3546 					free($1);
3547 					YYERROR;
3548 				}
3549 				$$ = grp->gr_gid;
3550 			}
3551 			free($1);
3552 		}
3553 		| NUMBER			{
3554 			if ($1 < 0 || $1 >= GID_MAX) {
3555 				yyerror("illegal gid value %lu", $1);
3556 				YYERROR;
3557 			}
3558 			$$ = $1;
3559 		}
3560 		;
3561 
3562 flag		: STRING			{
3563 			int	f;
3564 
3565 			if ((f = parse_flags($1)) < 0) {
3566 				yyerror("bad flags %s", $1);
3567 				free($1);
3568 				YYERROR;
3569 			}
3570 			free($1);
3571 			$$.b1 = f;
3572 		}
3573 		;
3574 
3575 flags		: FLAGS flag '/' flag	{ $$.b1 = $2.b1; $$.b2 = $4.b1; }
3576 		| FLAGS '/' flag	{ $$.b1 = 0; $$.b2 = $3.b1; }
3577 		| FLAGS ANY		{ $$.b1 = 0; $$.b2 = 0; }
3578 		;
3579 
3580 icmpspec	: ICMPTYPE icmp_item			{ $$ = $2; }
3581 		| ICMPTYPE '{' optnl icmp_list '}'	{ $$ = $4; }
3582 		| ICMP6TYPE icmp6_item			{ $$ = $2; }
3583 		| ICMP6TYPE '{' optnl icmp6_list '}'	{ $$ = $4; }
3584 		;
3585 
3586 icmp_list	: icmp_item optnl		{ $$ = $1; }
3587 		| icmp_list comma icmp_item optnl {
3588 			$1->tail->next = $3;
3589 			$1->tail = $3;
3590 			$$ = $1;
3591 		}
3592 		;
3593 
3594 icmp6_list	: icmp6_item optnl		{ $$ = $1; }
3595 		| icmp6_list comma icmp6_item optnl {
3596 			$1->tail->next = $3;
3597 			$1->tail = $3;
3598 			$$ = $1;
3599 		}
3600 		;
3601 
3602 icmp_item	: icmptype		{
3603 			$$ = calloc(1, sizeof(struct node_icmp));
3604 			if ($$ == NULL)
3605 				err(1, "icmp_item: calloc");
3606 			$$->type = $1;
3607 			$$->code = 0;
3608 			$$->proto = IPPROTO_ICMP;
3609 			$$->next = NULL;
3610 			$$->tail = $$;
3611 		}
3612 		| icmptype CODE STRING	{
3613 			const struct icmpcodeent	*p;
3614 
3615 			if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3616 				yyerror("unknown icmp-code %s", $3);
3617 				free($3);
3618 				YYERROR;
3619 			}
3620 
3621 			free($3);
3622 			$$ = calloc(1, sizeof(struct node_icmp));
3623 			if ($$ == NULL)
3624 				err(1, "icmp_item: calloc");
3625 			$$->type = $1;
3626 			$$->code = p->code + 1;
3627 			$$->proto = IPPROTO_ICMP;
3628 			$$->next = NULL;
3629 			$$->tail = $$;
3630 		}
3631 		| icmptype CODE NUMBER	{
3632 			if ($3 < 0 || $3 > 255) {
3633 				yyerror("illegal icmp-code %lu", $3);
3634 				YYERROR;
3635 			}
3636 			$$ = calloc(1, sizeof(struct node_icmp));
3637 			if ($$ == NULL)
3638 				err(1, "icmp_item: calloc");
3639 			$$->type = $1;
3640 			$$->code = $3 + 1;
3641 			$$->proto = IPPROTO_ICMP;
3642 			$$->next = NULL;
3643 			$$->tail = $$;
3644 		}
3645 		;
3646 
3647 icmp6_item	: icmp6type		{
3648 			$$ = calloc(1, sizeof(struct node_icmp));
3649 			if ($$ == NULL)
3650 				err(1, "icmp_item: calloc");
3651 			$$->type = $1;
3652 			$$->code = 0;
3653 			$$->proto = IPPROTO_ICMPV6;
3654 			$$->next = NULL;
3655 			$$->tail = $$;
3656 		}
3657 		| icmp6type CODE STRING	{
3658 			const struct icmpcodeent	*p;
3659 
3660 			if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3661 				yyerror("unknown icmp6-code %s", $3);
3662 				free($3);
3663 				YYERROR;
3664 			}
3665 			free($3);
3666 
3667 			$$ = calloc(1, sizeof(struct node_icmp));
3668 			if ($$ == NULL)
3669 				err(1, "icmp_item: calloc");
3670 			$$->type = $1;
3671 			$$->code = p->code + 1;
3672 			$$->proto = IPPROTO_ICMPV6;
3673 			$$->next = NULL;
3674 			$$->tail = $$;
3675 		}
3676 		| icmp6type CODE NUMBER	{
3677 			if ($3 < 0 || $3 > 255) {
3678 				yyerror("illegal icmp-code %lu", $3);
3679 				YYERROR;
3680 			}
3681 			$$ = calloc(1, sizeof(struct node_icmp));
3682 			if ($$ == NULL)
3683 				err(1, "icmp_item: calloc");
3684 			$$->type = $1;
3685 			$$->code = $3 + 1;
3686 			$$->proto = IPPROTO_ICMPV6;
3687 			$$->next = NULL;
3688 			$$->tail = $$;
3689 		}
3690 		;
3691 
3692 icmptype	: STRING			{
3693 			const struct icmptypeent	*p;
3694 
3695 			if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
3696 				yyerror("unknown icmp-type %s", $1);
3697 				free($1);
3698 				YYERROR;
3699 			}
3700 			$$ = p->type + 1;
3701 			free($1);
3702 		}
3703 		| NUMBER			{
3704 			if ($1 < 0 || $1 > 255) {
3705 				yyerror("illegal icmp-type %lu", $1);
3706 				YYERROR;
3707 			}
3708 			$$ = $1 + 1;
3709 		}
3710 		;
3711 
3712 icmp6type	: STRING			{
3713 			const struct icmptypeent	*p;
3714 
3715 			if ((p = geticmptypebyname($1, AF_INET6)) ==
3716 			    NULL) {
3717 				yyerror("unknown icmp6-type %s", $1);
3718 				free($1);
3719 				YYERROR;
3720 			}
3721 			$$ = p->type + 1;
3722 			free($1);
3723 		}
3724 		| NUMBER			{
3725 			if ($1 < 0 || $1 > 255) {
3726 				yyerror("illegal icmp6-type %lu", $1);
3727 				YYERROR;
3728 			}
3729 			$$ = $1 + 1;
3730 		}
3731 		;
3732 
3733 tos	: STRING			{
3734 			int val;
3735 			char *end;
3736 
3737 			if (map_tos($1, &val))
3738 				$$ = val;
3739 			else if ($1[0] == '0' && $1[1] == 'x') {
3740 				errno = 0;
3741 				$$ = strtoul($1, &end, 16);
3742 				if (errno || *end != '\0')
3743 					$$ = 256;
3744 			} else
3745 				$$ = 256;		/* flag bad argument */
3746 			if ($$ < 0 || $$ > 255) {
3747 				yyerror("illegal tos value %s", $1);
3748 				free($1);
3749 				YYERROR;
3750 			}
3751 			free($1);
3752 		}
3753 		| NUMBER			{
3754 			$$ = $1;
3755 			if ($$ < 0 || $$ > 255) {
3756 				yyerror("illegal tos value %s", $1);
3757 				YYERROR;
3758 			}
3759 		}
3760 		;
3761 
3762 sourcetrack	: SOURCETRACK		{ $$ = PF_SRCTRACK; }
3763 		| SOURCETRACK GLOBAL	{ $$ = PF_SRCTRACK_GLOBAL; }
3764 		| SOURCETRACK RULE	{ $$ = PF_SRCTRACK_RULE; }
3765 		;
3766 
3767 statelock	: IFBOUND {
3768 			$$ = PFRULE_IFBOUND;
3769 		}
3770 		| FLOATING {
3771 			$$ = 0;
3772 		}
3773 		;
3774 
3775 keep		: NO STATE			{
3776 			$$.action = 0;
3777 			$$.options = NULL;
3778 		}
3779 		| KEEP STATE state_opt_spec	{
3780 			$$.action = PF_STATE_NORMAL;
3781 			$$.options = $3;
3782 		}
3783 		| MODULATE STATE state_opt_spec {
3784 			$$.action = PF_STATE_MODULATE;
3785 			$$.options = $3;
3786 		}
3787 		| SYNPROXY STATE state_opt_spec {
3788 			$$.action = PF_STATE_SYNPROXY;
3789 			$$.options = $3;
3790 		}
3791 		;
3792 
3793 flush		: /* empty */			{ $$ = 0; }
3794 		| FLUSH				{ $$ = PF_FLUSH; }
3795 		| FLUSH GLOBAL			{
3796 			$$ = PF_FLUSH | PF_FLUSH_GLOBAL;
3797 		}
3798 		;
3799 
3800 state_opt_spec	: '(' state_opt_list ')'	{ $$ = $2; }
3801 		| /* empty */			{ $$ = NULL; }
3802 		;
3803 
3804 state_opt_list	: state_opt_item		{ $$ = $1; }
3805 		| state_opt_list comma state_opt_item {
3806 			$1->tail->next = $3;
3807 			$1->tail = $3;
3808 			$$ = $1;
3809 		}
3810 		;
3811 
3812 state_opt_item	: MAXIMUM NUMBER		{
3813 			if ($2 < 0 || $2 > UINT_MAX) {
3814 				yyerror("only positive values permitted");
3815 				YYERROR;
3816 			}
3817 			$$ = calloc(1, sizeof(struct node_state_opt));
3818 			if ($$ == NULL)
3819 				err(1, "state_opt_item: calloc");
3820 			$$->type = PF_STATE_OPT_MAX;
3821 			$$->data.max_states = $2;
3822 			$$->next = NULL;
3823 			$$->tail = $$;
3824 		}
3825 		| NOSYNC				{
3826 			$$ = calloc(1, sizeof(struct node_state_opt));
3827 			if ($$ == NULL)
3828 				err(1, "state_opt_item: calloc");
3829 			$$->type = PF_STATE_OPT_NOSYNC;
3830 			$$->next = NULL;
3831 			$$->tail = $$;
3832 		}
3833 		| MAXSRCSTATES NUMBER			{
3834 			if ($2 < 0 || $2 > UINT_MAX) {
3835 				yyerror("only positive values permitted");
3836 				YYERROR;
3837 			}
3838 			$$ = calloc(1, sizeof(struct node_state_opt));
3839 			if ($$ == NULL)
3840 				err(1, "state_opt_item: calloc");
3841 			$$->type = PF_STATE_OPT_MAX_SRC_STATES;
3842 			$$->data.max_src_states = $2;
3843 			$$->next = NULL;
3844 			$$->tail = $$;
3845 		}
3846 		| MAXSRCCONN NUMBER			{
3847 			if ($2 < 0 || $2 > UINT_MAX) {
3848 				yyerror("only positive values permitted");
3849 				YYERROR;
3850 			}
3851 			$$ = calloc(1, sizeof(struct node_state_opt));
3852 			if ($$ == NULL)
3853 				err(1, "state_opt_item: calloc");
3854 			$$->type = PF_STATE_OPT_MAX_SRC_CONN;
3855 			$$->data.max_src_conn = $2;
3856 			$$->next = NULL;
3857 			$$->tail = $$;
3858 		}
3859 		| MAXSRCCONNRATE NUMBER '/' NUMBER	{
3860 			if ($2 < 0 || $2 > UINT_MAX ||
3861 			    $4 < 0 || $4 > UINT_MAX) {
3862 				yyerror("only positive values permitted");
3863 				YYERROR;
3864 			}
3865 			$$ = calloc(1, sizeof(struct node_state_opt));
3866 			if ($$ == NULL)
3867 				err(1, "state_opt_item: calloc");
3868 			$$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
3869 			$$->data.max_src_conn_rate.limit = $2;
3870 			$$->data.max_src_conn_rate.seconds = $4;
3871 			$$->next = NULL;
3872 			$$->tail = $$;
3873 		}
3874 		| OVERLOAD '<' STRING '>' flush		{
3875 			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
3876 				yyerror("table name '%s' too long", $3);
3877 				free($3);
3878 				YYERROR;
3879 			}
3880 			$$ = calloc(1, sizeof(struct node_state_opt));
3881 			if ($$ == NULL)
3882 				err(1, "state_opt_item: calloc");
3883 			if (strlcpy($$->data.overload.tblname, $3,
3884 			    PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
3885 				errx(1, "state_opt_item: strlcpy");
3886 			free($3);
3887 			$$->type = PF_STATE_OPT_OVERLOAD;
3888 			$$->data.overload.flush = $5;
3889 			$$->next = NULL;
3890 			$$->tail = $$;
3891 		}
3892 		| MAXSRCNODES NUMBER			{
3893 			if ($2 < 0 || $2 > UINT_MAX) {
3894 				yyerror("only positive values permitted");
3895 				YYERROR;
3896 			}
3897 			$$ = calloc(1, sizeof(struct node_state_opt));
3898 			if ($$ == NULL)
3899 				err(1, "state_opt_item: calloc");
3900 			$$->type = PF_STATE_OPT_MAX_SRC_NODES;
3901 			$$->data.max_src_nodes = $2;
3902 			$$->next = NULL;
3903 			$$->tail = $$;
3904 		}
3905 		| sourcetrack {
3906 			$$ = calloc(1, sizeof(struct node_state_opt));
3907 			if ($$ == NULL)
3908 				err(1, "state_opt_item: calloc");
3909 			$$->type = PF_STATE_OPT_SRCTRACK;
3910 			$$->data.src_track = $1;
3911 			$$->next = NULL;
3912 			$$->tail = $$;
3913 		}
3914 		| statelock {
3915 			$$ = calloc(1, sizeof(struct node_state_opt));
3916 			if ($$ == NULL)
3917 				err(1, "state_opt_item: calloc");
3918 			$$->type = PF_STATE_OPT_STATELOCK;
3919 			$$->data.statelock = $1;
3920 			$$->next = NULL;
3921 			$$->tail = $$;
3922 		}
3923 		| SLOPPY {
3924 			$$ = calloc(1, sizeof(struct node_state_opt));
3925 			if ($$ == NULL)
3926 				err(1, "state_opt_item: calloc");
3927 			$$->type = PF_STATE_OPT_SLOPPY;
3928 			$$->next = NULL;
3929 			$$->tail = $$;
3930 		}
3931 		| STRING NUMBER			{
3932 			int	i;
3933 
3934 			if ($2 < 0 || $2 > UINT_MAX) {
3935 				yyerror("only positive values permitted");
3936 				YYERROR;
3937 			}
3938 			for (i = 0; pf_timeouts[i].name &&
3939 			    strcmp(pf_timeouts[i].name, $1); ++i)
3940 				;	/* nothing */
3941 			if (!pf_timeouts[i].name) {
3942 				yyerror("illegal timeout name %s", $1);
3943 				free($1);
3944 				YYERROR;
3945 			}
3946 			if (strchr(pf_timeouts[i].name, '.') == NULL) {
3947 				yyerror("illegal state timeout %s", $1);
3948 				free($1);
3949 				YYERROR;
3950 			}
3951 			free($1);
3952 			$$ = calloc(1, sizeof(struct node_state_opt));
3953 			if ($$ == NULL)
3954 				err(1, "state_opt_item: calloc");
3955 			$$->type = PF_STATE_OPT_TIMEOUT;
3956 			$$->data.timeout.number = pf_timeouts[i].timeout;
3957 			$$->data.timeout.seconds = $2;
3958 			$$->next = NULL;
3959 			$$->tail = $$;
3960 		}
3961 		;
3962 
3963 label		: LABEL STRING			{
3964 			$$ = $2;
3965 		}
3966 		;
3967 
3968 qname		: QUEUE STRING				{
3969 			$$.qname = $2;
3970 			$$.pqname = NULL;
3971 		}
3972 		| QUEUE '(' STRING ')'			{
3973 			$$.qname = $3;
3974 			$$.pqname = NULL;
3975 		}
3976 		| QUEUE '(' STRING comma STRING ')'	{
3977 			$$.qname = $3;
3978 			$$.pqname = $5;
3979 		}
3980 		;
3981 
3982 no		: /* empty */			{ $$ = 0; }
3983 		| NO				{ $$ = 1; }
3984 		;
3985 
3986 portstar	: numberstring			{
3987 			if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
3988 				free($1);
3989 				YYERROR;
3990 			}
3991 			free($1);
3992 		}
3993 		;
3994 
3995 redirspec	: host				{ $$ = $1; }
3996 		| '{' optnl redir_host_list '}'	{ $$ = $3; }
3997 		;
3998 
3999 redir_host_list	: host optnl			{ $$ = $1; }
4000 		| redir_host_list comma host optnl {
4001 			$1->tail->next = $3;
4002 			$1->tail = $3->tail;
4003 			$$ = $1;
4004 		}
4005 		;
4006 
4007 redirpool	: /* empty */			{ $$ = NULL; }
4008 		| ARROW redirspec		{
4009 			$$ = calloc(1, sizeof(struct redirection));
4010 			if ($$ == NULL)
4011 				err(1, "redirection: calloc");
4012 			$$->host = $2;
4013 			$$->rport.a = $$->rport.b = $$->rport.t = 0;
4014 		}
4015 		| ARROW redirspec PORT portstar	{
4016 			$$ = calloc(1, sizeof(struct redirection));
4017 			if ($$ == NULL)
4018 				err(1, "redirection: calloc");
4019 			$$->host = $2;
4020 			$$->rport = $4;
4021 		}
4022 		;
4023 
4024 hashkey		: /* empty */
4025 		{
4026 			$$ = calloc(1, sizeof(struct pf_poolhashkey));
4027 			if ($$ == NULL)
4028 				err(1, "hashkey: calloc");
4029 			$$->key32[0] = arc4random();
4030 			$$->key32[1] = arc4random();
4031 			$$->key32[2] = arc4random();
4032 			$$->key32[3] = arc4random();
4033 		}
4034 		| string
4035 		{
4036 			if (!strncmp($1, "0x", 2)) {
4037 				if (strlen($1) != 34) {
4038 					free($1);
4039 					yyerror("hex key must be 128 bits "
4040 						"(32 hex digits) long");
4041 					YYERROR;
4042 				}
4043 				$$ = calloc(1, sizeof(struct pf_poolhashkey));
4044 				if ($$ == NULL)
4045 					err(1, "hashkey: calloc");
4046 
4047 				if (sscanf($1, "0x%8x%8x%8x%8x",
4048 				    &$$->key32[0], &$$->key32[1],
4049 				    &$$->key32[2], &$$->key32[3]) != 4) {
4050 					free($$);
4051 					free($1);
4052 					yyerror("invalid hex key");
4053 					YYERROR;
4054 				}
4055 			} else {
4056 				MD5_CTX	context;
4057 
4058 				$$ = calloc(1, sizeof(struct pf_poolhashkey));
4059 				if ($$ == NULL)
4060 					err(1, "hashkey: calloc");
4061 				MD5Init(&context);
4062 				MD5Update(&context, (unsigned char *)$1,
4063 				    strlen($1));
4064 				MD5Final((unsigned char *)$$, &context);
4065 				HTONL($$->key32[0]);
4066 				HTONL($$->key32[1]);
4067 				HTONL($$->key32[2]);
4068 				HTONL($$->key32[3]);
4069 			}
4070 			free($1);
4071 		}
4072 		;
4073 
4074 pool_opts	:	{ bzero(&pool_opts, sizeof pool_opts); }
4075 		    pool_opts_l
4076 			{ $$ = pool_opts; }
4077 		| /* empty */	{
4078 			bzero(&pool_opts, sizeof pool_opts);
4079 			$$ = pool_opts;
4080 		}
4081 		;
4082 
4083 pool_opts_l	: pool_opts_l pool_opt
4084 		| pool_opt
4085 		;
4086 
4087 pool_opt	: BITMASK	{
4088 			if (pool_opts.type) {
4089 				yyerror("pool type cannot be redefined");
4090 				YYERROR;
4091 			}
4092 			pool_opts.type =  PF_POOL_BITMASK;
4093 		}
4094 		| RANDOM	{
4095 			if (pool_opts.type) {
4096 				yyerror("pool type cannot be redefined");
4097 				YYERROR;
4098 			}
4099 			pool_opts.type = PF_POOL_RANDOM;
4100 		}
4101 		| SOURCEHASH hashkey {
4102 			if (pool_opts.type) {
4103 				yyerror("pool type cannot be redefined");
4104 				YYERROR;
4105 			}
4106 			pool_opts.type = PF_POOL_SRCHASH;
4107 			pool_opts.key = $2;
4108 		}
4109 		| ROUNDROBIN	{
4110 			if (pool_opts.type) {
4111 				yyerror("pool type cannot be redefined");
4112 				YYERROR;
4113 			}
4114 			pool_opts.type = PF_POOL_ROUNDROBIN;
4115 		}
4116 		| STATICPORT	{
4117 			if (pool_opts.staticport) {
4118 				yyerror("static-port cannot be redefined");
4119 				YYERROR;
4120 			}
4121 			pool_opts.staticport = 1;
4122 		}
4123 		| STICKYADDRESS	{
4124 			if (filter_opts.marker & POM_STICKYADDRESS) {
4125 				yyerror("sticky-address cannot be redefined");
4126 				YYERROR;
4127 			}
4128 			pool_opts.marker |= POM_STICKYADDRESS;
4129 			pool_opts.opts |= PF_POOL_STICKYADDR;
4130 		}
4131 		| MAPEPORTSET number '/' number '/' number {
4132 			if (pool_opts.mape.offset) {
4133 				yyerror("map-e-portset cannot be redefined");
4134 				YYERROR;
4135 			}
4136 			if (pool_opts.type) {
4137 				yyerror("map-e-portset cannot be used with "
4138 					"address pools");
4139 				YYERROR;
4140 			}
4141 			if ($2 <= 0 || $2 >= 16) {
4142 				yyerror("MAP-E PSID offset must be 1-15");
4143 				YYERROR;
4144 			}
4145 			if ($4 < 0 || $4 >= 16 || $2 + $4 > 16) {
4146 				yyerror("Invalid MAP-E PSID length");
4147 				YYERROR;
4148 			} else if ($4 == 0) {
4149 				yyerror("PSID Length = 0: this means"
4150 				    " you do not need MAP-E");
4151 				YYERROR;
4152 			}
4153 			if ($6 < 0 || $6 > 65535) {
4154 				yyerror("Invalid MAP-E PSID");
4155 				YYERROR;
4156 			}
4157 			pool_opts.mape.offset = $2;
4158 			pool_opts.mape.psidlen = $4;
4159 			pool_opts.mape.psid = $6;
4160 		}
4161 		;
4162 
4163 redirection	: /* empty */			{ $$ = NULL; }
4164 		| ARROW host			{
4165 			$$ = calloc(1, sizeof(struct redirection));
4166 			if ($$ == NULL)
4167 				err(1, "redirection: calloc");
4168 			$$->host = $2;
4169 			$$->rport.a = $$->rport.b = $$->rport.t = 0;
4170 		}
4171 		| ARROW host PORT portstar	{
4172 			$$ = calloc(1, sizeof(struct redirection));
4173 			if ($$ == NULL)
4174 				err(1, "redirection: calloc");
4175 			$$->host = $2;
4176 			$$->rport = $4;
4177 		}
4178 		;
4179 
4180 natpasslog	: /* empty */	{ $$.b1 = $$.b2 = 0; $$.w2 = 0; }
4181 		| PASS		{ $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; }
4182 		| PASS log	{ $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; }
4183 		| log		{ $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; }
4184 		;
4185 
4186 nataction	: no NAT natpasslog {
4187 			if ($1 && $3.b1) {
4188 				yyerror("\"pass\" not valid with \"no\"");
4189 				YYERROR;
4190 			}
4191 			if ($1)
4192 				$$.b1 = PF_NONAT;
4193 			else
4194 				$$.b1 = PF_NAT;
4195 			$$.b2 = $3.b1;
4196 			$$.w = $3.b2;
4197 			$$.w2 = $3.w2;
4198 		}
4199 		| no RDR natpasslog {
4200 			if ($1 && $3.b1) {
4201 				yyerror("\"pass\" not valid with \"no\"");
4202 				YYERROR;
4203 			}
4204 			if ($1)
4205 				$$.b1 = PF_NORDR;
4206 			else
4207 				$$.b1 = PF_RDR;
4208 			$$.b2 = $3.b1;
4209 			$$.w = $3.b2;
4210 			$$.w2 = $3.w2;
4211 		}
4212 		;
4213 
4214 natrule		: nataction interface af proto fromto tag tagged rtable
4215 		    redirpool pool_opts
4216 		{
4217 			struct pfctl_rule	r;
4218 
4219 			if (check_rulestate(PFCTL_STATE_NAT))
4220 				YYERROR;
4221 
4222 			memset(&r, 0, sizeof(r));
4223 
4224 			r.action = $1.b1;
4225 			r.natpass = $1.b2;
4226 			r.log = $1.w;
4227 			r.logif = $1.w2;
4228 			r.af = $3;
4229 
4230 			if (!r.af) {
4231 				if ($5.src.host && $5.src.host->af &&
4232 				    !$5.src.host->ifindex)
4233 					r.af = $5.src.host->af;
4234 				else if ($5.dst.host && $5.dst.host->af &&
4235 				    !$5.dst.host->ifindex)
4236 					r.af = $5.dst.host->af;
4237 			}
4238 
4239 			if ($6 != NULL)
4240 				if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >=
4241 				    PF_TAG_NAME_SIZE) {
4242 					yyerror("tag too long, max %u chars",
4243 					    PF_TAG_NAME_SIZE - 1);
4244 					YYERROR;
4245 				}
4246 
4247 			if ($7.name)
4248 				if (strlcpy(r.match_tagname, $7.name,
4249 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4250 					yyerror("tag too long, max %u chars",
4251 					    PF_TAG_NAME_SIZE - 1);
4252 					YYERROR;
4253 				}
4254 			r.match_tag_not = $7.neg;
4255 			r.rtableid = $8;
4256 
4257 			if (r.action == PF_NONAT || r.action == PF_NORDR) {
4258 				if ($9 != NULL) {
4259 					yyerror("translation rule with 'no' "
4260 					    "does not need '->'");
4261 					YYERROR;
4262 				}
4263 			} else {
4264 				if ($9 == NULL || $9->host == NULL) {
4265 					yyerror("translation rule requires '-> "
4266 					    "address'");
4267 					YYERROR;
4268 				}
4269 				if (!r.af && ! $9->host->ifindex)
4270 					r.af = $9->host->af;
4271 
4272 				remove_invalid_hosts(&$9->host, &r.af);
4273 				if (invalid_redirect($9->host, r.af))
4274 					YYERROR;
4275 				if (check_netmask($9->host, r.af))
4276 					YYERROR;
4277 
4278 				r.rpool.proxy_port[0] = ntohs($9->rport.a);
4279 
4280 				switch (r.action) {
4281 				case PF_RDR:
4282 					if (!$9->rport.b && $9->rport.t &&
4283 					    $5.dst.port != NULL) {
4284 						r.rpool.proxy_port[1] =
4285 						    ntohs($9->rport.a) +
4286 						    (ntohs(
4287 						    $5.dst.port->port[1]) -
4288 						    ntohs(
4289 						    $5.dst.port->port[0]));
4290 					} else
4291 						r.rpool.proxy_port[1] =
4292 						    ntohs($9->rport.b);
4293 					break;
4294 				case PF_NAT:
4295 					r.rpool.proxy_port[1] =
4296 					    ntohs($9->rport.b);
4297 					if (!r.rpool.proxy_port[0] &&
4298 					    !r.rpool.proxy_port[1]) {
4299 						r.rpool.proxy_port[0] =
4300 						    PF_NAT_PROXY_PORT_LOW;
4301 						r.rpool.proxy_port[1] =
4302 						    PF_NAT_PROXY_PORT_HIGH;
4303 					} else if (!r.rpool.proxy_port[1])
4304 						r.rpool.proxy_port[1] =
4305 						    r.rpool.proxy_port[0];
4306 					break;
4307 				default:
4308 					break;
4309 				}
4310 
4311 				r.rpool.opts = $10.type;
4312 				if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
4313 				    PF_POOL_NONE && ($9->host->next != NULL ||
4314 				    $9->host->addr.type == PF_ADDR_TABLE ||
4315 				    DYNIF_MULTIADDR($9->host->addr)))
4316 					r.rpool.opts = PF_POOL_ROUNDROBIN;
4317 				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4318 				    PF_POOL_ROUNDROBIN &&
4319 				    disallow_table($9->host, "tables are only "
4320 				    "supported in round-robin redirection "
4321 				    "pools"))
4322 					YYERROR;
4323 				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4324 				    PF_POOL_ROUNDROBIN &&
4325 				    disallow_alias($9->host, "interface (%s) "
4326 				    "is only supported in round-robin "
4327 				    "redirection pools"))
4328 					YYERROR;
4329 				if ($9->host->next != NULL) {
4330 					if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4331 					    PF_POOL_ROUNDROBIN) {
4332 						yyerror("only round-robin "
4333 						    "valid for multiple "
4334 						    "redirection addresses");
4335 						YYERROR;
4336 					}
4337 				}
4338 			}
4339 
4340 			if ($10.key != NULL)
4341 				memcpy(&r.rpool.key, $10.key,
4342 				    sizeof(struct pf_poolhashkey));
4343 
4344 			 if ($10.opts)
4345 				r.rpool.opts |= $10.opts;
4346 
4347 			if ($10.staticport) {
4348 				if (r.action != PF_NAT) {
4349 					yyerror("the 'static-port' option is "
4350 					    "only valid with nat rules");
4351 					YYERROR;
4352 				}
4353 				if (r.rpool.proxy_port[0] !=
4354 				    PF_NAT_PROXY_PORT_LOW &&
4355 				    r.rpool.proxy_port[1] !=
4356 				    PF_NAT_PROXY_PORT_HIGH) {
4357 					yyerror("the 'static-port' option can't"
4358 					    " be used when specifying a port"
4359 					    " range");
4360 					YYERROR;
4361 				}
4362 				r.rpool.proxy_port[0] = 0;
4363 				r.rpool.proxy_port[1] = 0;
4364 			}
4365 
4366 			if ($10.mape.offset) {
4367 				if (r.action != PF_NAT) {
4368 					yyerror("the 'map-e-portset' option is"
4369 					    " only valid with nat rules");
4370 					YYERROR;
4371 				}
4372 				if ($10.staticport) {
4373 					yyerror("the 'map-e-portset' option"
4374 					    " can't be used 'static-port'");
4375 					YYERROR;
4376 				}
4377 				if (r.rpool.proxy_port[0] !=
4378 				    PF_NAT_PROXY_PORT_LOW &&
4379 				    r.rpool.proxy_port[1] !=
4380 				    PF_NAT_PROXY_PORT_HIGH) {
4381 					yyerror("the 'map-e-portset' option"
4382 					    " can't be used when specifying"
4383 					    " a port range");
4384 					YYERROR;
4385 				}
4386 				r.rpool.mape = $10.mape;
4387 			}
4388 
4389 			expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4,
4390 			    $5.src_os, $5.src.host, $5.src.port, $5.dst.host,
4391 			    $5.dst.port, 0, 0, 0, "");
4392 			free($9);
4393 		}
4394 		;
4395 
4396 binatrule	: no BINAT natpasslog interface af proto FROM ipspec toipspec tag
4397 		    tagged rtable redirection
4398 		{
4399 			struct pfctl_rule	binat;
4400 			struct pf_pooladdr	*pa;
4401 
4402 			if (check_rulestate(PFCTL_STATE_NAT))
4403 				YYERROR;
4404 			if (disallow_urpf_failed($9, "\"urpf-failed\" is not "
4405 			    "permitted as a binat destination"))
4406 				YYERROR;
4407 
4408 			memset(&binat, 0, sizeof(binat));
4409 
4410 			if ($1 && $3.b1) {
4411 				yyerror("\"pass\" not valid with \"no\"");
4412 				YYERROR;
4413 			}
4414 			if ($1)
4415 				binat.action = PF_NOBINAT;
4416 			else
4417 				binat.action = PF_BINAT;
4418 			binat.natpass = $3.b1;
4419 			binat.log = $3.b2;
4420 			binat.logif = $3.w2;
4421 			binat.af = $5;
4422 			if (!binat.af && $8 != NULL && $8->af)
4423 				binat.af = $8->af;
4424 			if (!binat.af && $9 != NULL && $9->af)
4425 				binat.af = $9->af;
4426 
4427 			if (!binat.af && $13 != NULL && $13->host)
4428 				binat.af = $13->host->af;
4429 			if (!binat.af) {
4430 				yyerror("address family (inet/inet6) "
4431 				    "undefined");
4432 				YYERROR;
4433 			}
4434 
4435 			if ($4 != NULL) {
4436 				memcpy(binat.ifname, $4->ifname,
4437 				    sizeof(binat.ifname));
4438 				binat.ifnot = $4->not;
4439 				free($4);
4440 			}
4441 
4442 			if ($10 != NULL)
4443 				if (strlcpy(binat.tagname, $10,
4444 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4445 					yyerror("tag too long, max %u chars",
4446 					    PF_TAG_NAME_SIZE - 1);
4447 					YYERROR;
4448 				}
4449 			if ($11.name)
4450 				if (strlcpy(binat.match_tagname, $11.name,
4451 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4452 					yyerror("tag too long, max %u chars",
4453 					    PF_TAG_NAME_SIZE - 1);
4454 					YYERROR;
4455 				}
4456 			binat.match_tag_not = $11.neg;
4457 			binat.rtableid = $12;
4458 
4459 			if ($6 != NULL) {
4460 				binat.proto = $6->proto;
4461 				free($6);
4462 			}
4463 
4464 			if ($8 != NULL && disallow_table($8, "invalid use of "
4465 			    "table <%s> as the source address of a binat rule"))
4466 				YYERROR;
4467 			if ($8 != NULL && disallow_alias($8, "invalid use of "
4468 			    "interface (%s) as the source address of a binat "
4469 			    "rule"))
4470 				YYERROR;
4471 			if ($13 != NULL && $13->host != NULL && disallow_table(
4472 			    $13->host, "invalid use of table <%s> as the "
4473 			    "redirect address of a binat rule"))
4474 				YYERROR;
4475 			if ($13 != NULL && $13->host != NULL && disallow_alias(
4476 			    $13->host, "invalid use of interface (%s) as the "
4477 			    "redirect address of a binat rule"))
4478 				YYERROR;
4479 
4480 			if ($8 != NULL) {
4481 				if ($8->next) {
4482 					yyerror("multiple binat ip addresses");
4483 					YYERROR;
4484 				}
4485 				if ($8->addr.type == PF_ADDR_DYNIFTL)
4486 					$8->af = binat.af;
4487 				if ($8->af != binat.af) {
4488 					yyerror("binat ip versions must match");
4489 					YYERROR;
4490 				}
4491 				if (check_netmask($8, binat.af))
4492 					YYERROR;
4493 				memcpy(&binat.src.addr, &$8->addr,
4494 				    sizeof(binat.src.addr));
4495 				free($8);
4496 			}
4497 			if ($9 != NULL) {
4498 				if ($9->next) {
4499 					yyerror("multiple binat ip addresses");
4500 					YYERROR;
4501 				}
4502 				if ($9->af != binat.af && $9->af) {
4503 					yyerror("binat ip versions must match");
4504 					YYERROR;
4505 				}
4506 				if (check_netmask($9, binat.af))
4507 					YYERROR;
4508 				memcpy(&binat.dst.addr, &$9->addr,
4509 				    sizeof(binat.dst.addr));
4510 				binat.dst.neg = $9->not;
4511 				free($9);
4512 			}
4513 
4514 			if (binat.action == PF_NOBINAT) {
4515 				if ($13 != NULL) {
4516 					yyerror("'no binat' rule does not need"
4517 					    " '->'");
4518 					YYERROR;
4519 				}
4520 			} else {
4521 				if ($13 == NULL || $13->host == NULL) {
4522 					yyerror("'binat' rule requires"
4523 					    " '-> address'");
4524 					YYERROR;
4525 				}
4526 
4527 				remove_invalid_hosts(&$13->host, &binat.af);
4528 				if (invalid_redirect($13->host, binat.af))
4529 					YYERROR;
4530 				if ($13->host->next != NULL) {
4531 					yyerror("binat rule must redirect to "
4532 					    "a single address");
4533 					YYERROR;
4534 				}
4535 				if (check_netmask($13->host, binat.af))
4536 					YYERROR;
4537 
4538 				if (!PF_AZERO(&binat.src.addr.v.a.mask,
4539 				    binat.af) &&
4540 				    !PF_AEQ(&binat.src.addr.v.a.mask,
4541 				    &$13->host->addr.v.a.mask, binat.af)) {
4542 					yyerror("'binat' source mask and "
4543 					    "redirect mask must be the same");
4544 					YYERROR;
4545 				}
4546 
4547 				TAILQ_INIT(&binat.rpool.list);
4548 				pa = calloc(1, sizeof(struct pf_pooladdr));
4549 				if (pa == NULL)
4550 					err(1, "binat: calloc");
4551 				pa->addr = $13->host->addr;
4552 				pa->ifname[0] = 0;
4553 				TAILQ_INSERT_TAIL(&binat.rpool.list,
4554 				    pa, entries);
4555 
4556 				free($13);
4557 			}
4558 
4559 			pfctl_append_rule(pf, &binat, "");
4560 		}
4561 		;
4562 
4563 tag		: /* empty */		{ $$ = NULL; }
4564 		| TAG STRING		{ $$ = $2; }
4565 		;
4566 
4567 tagged		: /* empty */		{ $$.neg = 0; $$.name = NULL; }
4568 		| not TAGGED string	{ $$.neg = $1; $$.name = $3; }
4569 		;
4570 
4571 rtable		: /* empty */		{ $$ = -1; }
4572 		| RTABLE NUMBER		{
4573 			if ($2 < 0 || $2 > rt_tableid_max()) {
4574 				yyerror("invalid rtable id");
4575 				YYERROR;
4576 			}
4577 			$$ = $2;
4578 		}
4579 		;
4580 
4581 route_host	: STRING			{
4582 			$$ = calloc(1, sizeof(struct node_host));
4583 			if ($$ == NULL)
4584 				err(1, "route_host: calloc");
4585 			$$->ifname = strdup($1);
4586 			set_ipmask($$, 128);
4587 			$$->next = NULL;
4588 			$$->tail = $$;
4589 		}
4590 		| '(' STRING host ')'		{
4591 			struct node_host *n;
4592 
4593 			$$ = $3;
4594 			for (n = $3; n != NULL; n = n->next)
4595 				n->ifname = strdup($2);
4596 		}
4597 		;
4598 
4599 route_host_list	: route_host optnl			{ $$ = $1; }
4600 		| route_host_list comma route_host optnl {
4601 			if ($1->af == 0)
4602 				$1->af = $3->af;
4603 			if ($1->af != $3->af) {
4604 				yyerror("all pool addresses must be in the "
4605 				    "same address family");
4606 				YYERROR;
4607 			}
4608 			$1->tail->next = $3;
4609 			$1->tail = $3->tail;
4610 			$$ = $1;
4611 		}
4612 		;
4613 
4614 routespec	: route_host			{ $$ = $1; }
4615 		| '{' optnl route_host_list '}'	{ $$ = $3; }
4616 		;
4617 
4618 route		: /* empty */			{
4619 			$$.host = NULL;
4620 			$$.rt = 0;
4621 			$$.pool_opts = 0;
4622 		}
4623 		| FASTROUTE {
4624 			/* backwards-compat */
4625 			$$.host = NULL;
4626 			$$.rt = 0;
4627 			$$.pool_opts = 0;
4628 		}
4629 		| ROUTETO routespec pool_opts {
4630 			$$.host = $2;
4631 			$$.rt = PF_ROUTETO;
4632 			$$.pool_opts = $3.type | $3.opts;
4633 			if ($3.key != NULL)
4634 				$$.key = $3.key;
4635 		}
4636 		| REPLYTO routespec pool_opts {
4637 			$$.host = $2;
4638 			$$.rt = PF_REPLYTO;
4639 			$$.pool_opts = $3.type | $3.opts;
4640 			if ($3.key != NULL)
4641 				$$.key = $3.key;
4642 		}
4643 		| DUPTO routespec pool_opts {
4644 			$$.host = $2;
4645 			$$.rt = PF_DUPTO;
4646 			$$.pool_opts = $3.type | $3.opts;
4647 			if ($3.key != NULL)
4648 				$$.key = $3.key;
4649 		}
4650 		;
4651 
4652 timeout_spec	: STRING NUMBER
4653 		{
4654 			if (check_rulestate(PFCTL_STATE_OPTION)) {
4655 				free($1);
4656 				YYERROR;
4657 			}
4658 			if ($2 < 0 || $2 > UINT_MAX) {
4659 				yyerror("only positive values permitted");
4660 				YYERROR;
4661 			}
4662 			if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
4663 				yyerror("unknown timeout %s", $1);
4664 				free($1);
4665 				YYERROR;
4666 			}
4667 			free($1);
4668 		}
4669 		| INTERVAL NUMBER		{
4670 			if (check_rulestate(PFCTL_STATE_OPTION))
4671 				YYERROR;
4672 			if ($2 < 0 || $2 > UINT_MAX) {
4673 				yyerror("only positive values permitted");
4674 				YYERROR;
4675 			}
4676 			if (pfctl_set_timeout(pf, "interval", $2, 0) != 0)
4677 				YYERROR;
4678 		}
4679 		;
4680 
4681 timeout_list	: timeout_list comma timeout_spec optnl
4682 		| timeout_spec optnl
4683 		;
4684 
4685 limit_spec	: STRING NUMBER
4686 		{
4687 			if (check_rulestate(PFCTL_STATE_OPTION)) {
4688 				free($1);
4689 				YYERROR;
4690 			}
4691 			if ($2 < 0 || $2 > UINT_MAX) {
4692 				yyerror("only positive values permitted");
4693 				YYERROR;
4694 			}
4695 			if (pfctl_set_limit(pf, $1, $2) != 0) {
4696 				yyerror("unable to set limit %s %u", $1, $2);
4697 				free($1);
4698 				YYERROR;
4699 			}
4700 			free($1);
4701 		}
4702 		;
4703 
4704 limit_list	: limit_list comma limit_spec optnl
4705 		| limit_spec optnl
4706 		;
4707 
4708 comma		: ','
4709 		| /* empty */
4710 		;
4711 
4712 yesno		: NO			{ $$ = 0; }
4713 		| STRING		{
4714 			if (!strcmp($1, "yes"))
4715 				$$ = 1;
4716 			else {
4717 				yyerror("invalid value '%s', expected 'yes' "
4718 				    "or 'no'", $1);
4719 				free($1);
4720 				YYERROR;
4721 			}
4722 			free($1);
4723 		}
4724 		;
4725 
4726 unaryop		: '='		{ $$ = PF_OP_EQ; }
4727 		| '!' '='	{ $$ = PF_OP_NE; }
4728 		| '<' '='	{ $$ = PF_OP_LE; }
4729 		| '<'		{ $$ = PF_OP_LT; }
4730 		| '>' '='	{ $$ = PF_OP_GE; }
4731 		| '>'		{ $$ = PF_OP_GT; }
4732 		;
4733 
4734 %%
4735 
4736 int
4737 yyerror(const char *fmt, ...)
4738 {
4739 	va_list		 ap;
4740 
4741 	file->errors++;
4742 	va_start(ap, fmt);
4743 	fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
4744 	vfprintf(stderr, fmt, ap);
4745 	fprintf(stderr, "\n");
4746 	va_end(ap);
4747 	return (0);
4748 }
4749 
4750 int
4751 disallow_table(struct node_host *h, const char *fmt)
4752 {
4753 	for (; h != NULL; h = h->next)
4754 		if (h->addr.type == PF_ADDR_TABLE) {
4755 			yyerror(fmt, h->addr.v.tblname);
4756 			return (1);
4757 		}
4758 	return (0);
4759 }
4760 
4761 int
4762 disallow_urpf_failed(struct node_host *h, const char *fmt)
4763 {
4764 	for (; h != NULL; h = h->next)
4765 		if (h->addr.type == PF_ADDR_URPFFAILED) {
4766 			yyerror(fmt);
4767 			return (1);
4768 		}
4769 	return (0);
4770 }
4771 
4772 int
4773 disallow_alias(struct node_host *h, const char *fmt)
4774 {
4775 	for (; h != NULL; h = h->next)
4776 		if (DYNIF_MULTIADDR(h->addr)) {
4777 			yyerror(fmt, h->addr.v.tblname);
4778 			return (1);
4779 		}
4780 	return (0);
4781 }
4782 
4783 int
4784 rule_consistent(struct pfctl_rule *r, int anchor_call)
4785 {
4786 	int	problems = 0;
4787 
4788 	switch (r->action) {
4789 	case PF_PASS:
4790 	case PF_DROP:
4791 	case PF_SCRUB:
4792 	case PF_NOSCRUB:
4793 		problems = filter_consistent(r, anchor_call);
4794 		break;
4795 	case PF_NAT:
4796 	case PF_NONAT:
4797 		problems = nat_consistent(r);
4798 		break;
4799 	case PF_RDR:
4800 	case PF_NORDR:
4801 		problems = rdr_consistent(r);
4802 		break;
4803 	case PF_BINAT:
4804 	case PF_NOBINAT:
4805 	default:
4806 		break;
4807 	}
4808 	return (problems);
4809 }
4810 
4811 int
4812 filter_consistent(struct pfctl_rule *r, int anchor_call)
4813 {
4814 	int	problems = 0;
4815 
4816 	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
4817 	    (r->src.port_op || r->dst.port_op)) {
4818 		yyerror("port only applies to tcp/udp");
4819 		problems++;
4820 	}
4821 	if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
4822 	    (r->type || r->code)) {
4823 		yyerror("icmp-type/code only applies to icmp");
4824 		problems++;
4825 	}
4826 	if (!r->af && (r->type || r->code)) {
4827 		yyerror("must indicate address family with icmp-type/code");
4828 		problems++;
4829 	}
4830 	if (r->overload_tblname[0] &&
4831 	    r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
4832 		yyerror("'overload' requires 'max-src-conn' "
4833 		    "or 'max-src-conn-rate'");
4834 		problems++;
4835 	}
4836 	if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
4837 	    (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
4838 		yyerror("proto %s doesn't match address family %s",
4839 		    r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
4840 		    r->af == AF_INET ? "inet" : "inet6");
4841 		problems++;
4842 	}
4843 	if (r->allow_opts && r->action != PF_PASS) {
4844 		yyerror("allow-opts can only be specified for pass rules");
4845 		problems++;
4846 	}
4847 	if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
4848 	    r->dst.port_op || r->flagset || r->type || r->code)) {
4849 		yyerror("fragments can be filtered only on IP header fields");
4850 		problems++;
4851 	}
4852 	if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
4853 		yyerror("return-rst can only be applied to TCP rules");
4854 		problems++;
4855 	}
4856 	if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
4857 		yyerror("max-src-nodes requires 'source-track rule'");
4858 		problems++;
4859 	}
4860 	if (r->action == PF_DROP && r->keep_state) {
4861 		yyerror("keep state on block rules doesn't make sense");
4862 		problems++;
4863 	}
4864 	if (r->rule_flag & PFRULE_STATESLOPPY &&
4865 	    (r->keep_state == PF_STATE_MODULATE ||
4866 	    r->keep_state == PF_STATE_SYNPROXY)) {
4867 		yyerror("sloppy state matching cannot be used with "
4868 		    "synproxy state or modulate state");
4869 		problems++;
4870 	}
4871 	return (-problems);
4872 }
4873 
4874 int
4875 nat_consistent(struct pfctl_rule *r)
4876 {
4877 	return (0);	/* yeah! */
4878 }
4879 
4880 int
4881 rdr_consistent(struct pfctl_rule *r)
4882 {
4883 	int			 problems = 0;
4884 
4885 	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) {
4886 		if (r->src.port_op) {
4887 			yyerror("src port only applies to tcp/udp");
4888 			problems++;
4889 		}
4890 		if (r->dst.port_op) {
4891 			yyerror("dst port only applies to tcp/udp");
4892 			problems++;
4893 		}
4894 		if (r->rpool.proxy_port[0]) {
4895 			yyerror("rpool port only applies to tcp/udp");
4896 			problems++;
4897 		}
4898 	}
4899 	if (r->dst.port_op &&
4900 	    r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) {
4901 		yyerror("invalid port operator for rdr destination port");
4902 		problems++;
4903 	}
4904 	return (-problems);
4905 }
4906 
4907 int
4908 process_tabledef(char *name, struct table_opts *opts)
4909 {
4910 	struct pfr_buffer	 ab;
4911 	struct node_tinit	*ti;
4912 	unsigned long		 maxcount;
4913 	size_t			 s = sizeof(maxcount);
4914 
4915 	bzero(&ab, sizeof(ab));
4916 	ab.pfrb_type = PFRB_ADDRS;
4917 	SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
4918 		if (ti->file)
4919 			if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
4920 				if (errno)
4921 					yyerror("cannot load \"%s\": %s",
4922 					    ti->file, strerror(errno));
4923 				else
4924 					yyerror("file \"%s\" contains bad data",
4925 					    ti->file);
4926 				goto _error;
4927 			}
4928 		if (ti->host)
4929 			if (append_addr_host(&ab, ti->host, 0, 0)) {
4930 				yyerror("cannot create address buffer: %s",
4931 				    strerror(errno));
4932 				goto _error;
4933 			}
4934 	}
4935 	if (pf->opts & PF_OPT_VERBOSE)
4936 		print_tabledef(name, opts->flags, opts->init_addr,
4937 		    &opts->init_nodes);
4938 	if (!(pf->opts & PF_OPT_NOACTION) &&
4939 	    pfctl_define_table(name, opts->flags, opts->init_addr,
4940 	    pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
4941 
4942 		if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s,
4943 		    NULL, 0) == -1)
4944 			maxcount = 65535;
4945 
4946 		if (ab.pfrb_size > maxcount)
4947 			yyerror("cannot define table %s: too many elements.\n"
4948 			    "Consider increasing net.pf.request_maxcount.",
4949 			    name);
4950 		else
4951 			yyerror("cannot define table %s: %s", name,
4952 			    pfr_strerror(errno));
4953 
4954 		goto _error;
4955 	}
4956 	pf->tdirty = 1;
4957 	pfr_buf_clear(&ab);
4958 	return (0);
4959 _error:
4960 	pfr_buf_clear(&ab);
4961 	return (-1);
4962 }
4963 
4964 struct keywords {
4965 	const char	*k_name;
4966 	int		 k_val;
4967 };
4968 
4969 /* macro gore, but you should've seen the prior indentation nightmare... */
4970 
4971 #define FREE_LIST(T,r) \
4972 	do { \
4973 		T *p, *node = r; \
4974 		while (node != NULL) { \
4975 			p = node; \
4976 			node = node->next; \
4977 			free(p); \
4978 		} \
4979 	} while (0)
4980 
4981 #define LOOP_THROUGH(T,n,r,C) \
4982 	do { \
4983 		T *n; \
4984 		if (r == NULL) { \
4985 			r = calloc(1, sizeof(T)); \
4986 			if (r == NULL) \
4987 				err(1, "LOOP: calloc"); \
4988 			r->next = NULL; \
4989 		} \
4990 		n = r; \
4991 		while (n != NULL) { \
4992 			do { \
4993 				C; \
4994 			} while (0); \
4995 			n = n->next; \
4996 		} \
4997 	} while (0)
4998 
4999 void
5000 expand_label_str(char *label, size_t len, const char *srch, const char *repl)
5001 {
5002 	char *tmp;
5003 	char *p, *q;
5004 
5005 	if ((tmp = calloc(1, len)) == NULL)
5006 		err(1, "expand_label_str: calloc");
5007 	p = q = label;
5008 	while ((q = strstr(p, srch)) != NULL) {
5009 		*q = '\0';
5010 		if ((strlcat(tmp, p, len) >= len) ||
5011 		    (strlcat(tmp, repl, len) >= len))
5012 			errx(1, "expand_label: label too long");
5013 		q += strlen(srch);
5014 		p = q;
5015 	}
5016 	if (strlcat(tmp, p, len) >= len)
5017 		errx(1, "expand_label: label too long");
5018 	strlcpy(label, tmp, len);	/* always fits */
5019 	free(tmp);
5020 }
5021 
5022 void
5023 expand_label_if(const char *name, char *label, size_t len, const char *ifname)
5024 {
5025 	if (strstr(label, name) != NULL) {
5026 		if (!*ifname)
5027 			expand_label_str(label, len, name, "any");
5028 		else
5029 			expand_label_str(label, len, name, ifname);
5030 	}
5031 }
5032 
5033 void
5034 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
5035     struct pf_rule_addr *addr)
5036 {
5037 	char tmp[64], tmp_not[66];
5038 
5039 	if (strstr(label, name) != NULL) {
5040 		switch (addr->addr.type) {
5041 		case PF_ADDR_DYNIFTL:
5042 			snprintf(tmp, sizeof(tmp), "(%s)", addr->addr.v.ifname);
5043 			break;
5044 		case PF_ADDR_TABLE:
5045 			snprintf(tmp, sizeof(tmp), "<%s>", addr->addr.v.tblname);
5046 			break;
5047 		case PF_ADDR_NOROUTE:
5048 			snprintf(tmp, sizeof(tmp), "no-route");
5049 			break;
5050 		case PF_ADDR_URPFFAILED:
5051 			snprintf(tmp, sizeof(tmp), "urpf-failed");
5052 			break;
5053 		case PF_ADDR_ADDRMASK:
5054 			if (!af || (PF_AZERO(&addr->addr.v.a.addr, af) &&
5055 			    PF_AZERO(&addr->addr.v.a.mask, af)))
5056 				snprintf(tmp, sizeof(tmp), "any");
5057 			else {
5058 				char	a[48];
5059 				int	bits;
5060 
5061 				if (inet_ntop(af, &addr->addr.v.a.addr, a,
5062 				    sizeof(a)) == NULL)
5063 					snprintf(tmp, sizeof(tmp), "?");
5064 				else {
5065 					bits = unmask(&addr->addr.v.a.mask, af);
5066 					if ((af == AF_INET && bits < 32) ||
5067 					    (af == AF_INET6 && bits < 128))
5068 						snprintf(tmp, sizeof(tmp),
5069 						    "%s/%d", a, bits);
5070 					else
5071 						snprintf(tmp, sizeof(tmp),
5072 						    "%s", a);
5073 				}
5074 			}
5075 			break;
5076 		default:
5077 			snprintf(tmp, sizeof(tmp), "?");
5078 			break;
5079 		}
5080 
5081 		if (addr->neg) {
5082 			snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
5083 			expand_label_str(label, len, name, tmp_not);
5084 		} else
5085 			expand_label_str(label, len, name, tmp);
5086 	}
5087 }
5088 
5089 void
5090 expand_label_port(const char *name, char *label, size_t len,
5091     struct pf_rule_addr *addr)
5092 {
5093 	char	 a1[6], a2[6], op[13] = "";
5094 
5095 	if (strstr(label, name) != NULL) {
5096 		snprintf(a1, sizeof(a1), "%u", ntohs(addr->port[0]));
5097 		snprintf(a2, sizeof(a2), "%u", ntohs(addr->port[1]));
5098 		if (!addr->port_op)
5099 			;
5100 		else if (addr->port_op == PF_OP_IRG)
5101 			snprintf(op, sizeof(op), "%s><%s", a1, a2);
5102 		else if (addr->port_op == PF_OP_XRG)
5103 			snprintf(op, sizeof(op), "%s<>%s", a1, a2);
5104 		else if (addr->port_op == PF_OP_EQ)
5105 			snprintf(op, sizeof(op), "%s", a1);
5106 		else if (addr->port_op == PF_OP_NE)
5107 			snprintf(op, sizeof(op), "!=%s", a1);
5108 		else if (addr->port_op == PF_OP_LT)
5109 			snprintf(op, sizeof(op), "<%s", a1);
5110 		else if (addr->port_op == PF_OP_LE)
5111 			snprintf(op, sizeof(op), "<=%s", a1);
5112 		else if (addr->port_op == PF_OP_GT)
5113 			snprintf(op, sizeof(op), ">%s", a1);
5114 		else if (addr->port_op == PF_OP_GE)
5115 			snprintf(op, sizeof(op), ">=%s", a1);
5116 		expand_label_str(label, len, name, op);
5117 	}
5118 }
5119 
5120 void
5121 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
5122 {
5123 	const char *protoname;
5124 	char n[4];
5125 
5126 	if (strstr(label, name) != NULL) {
5127 		protoname = pfctl_proto2name(proto);
5128 		if (protoname != NULL)
5129 			expand_label_str(label, len, name, protoname);
5130 		else {
5131 			snprintf(n, sizeof(n), "%u", proto);
5132 			expand_label_str(label, len, name, n);
5133 		}
5134 	}
5135 }
5136 
5137 void
5138 expand_label_nr(const char *name, char *label, size_t len,
5139     struct pfctl_rule *r)
5140 {
5141 	char n[11];
5142 
5143 	if (strstr(label, name) != NULL) {
5144 		snprintf(n, sizeof(n), "%u", r->nr);
5145 		expand_label_str(label, len, name, n);
5146 	}
5147 }
5148 
5149 void
5150 expand_label(char *label, size_t len, struct pfctl_rule *r)
5151 {
5152 	expand_label_if("$if", label, len, r->ifname);
5153 	expand_label_addr("$srcaddr", label, len, r->af, &r->src);
5154 	expand_label_addr("$dstaddr", label, len, r->af, &r->dst);
5155 	expand_label_port("$srcport", label, len, &r->src);
5156 	expand_label_port("$dstport", label, len, &r->dst);
5157 	expand_label_proto("$proto", label, len, r->proto);
5158 	expand_label_nr("$nr", label, len, r);
5159 }
5160 
5161 int
5162 expand_altq(struct pf_altq *a, struct node_if *interfaces,
5163     struct node_queue *nqueues, struct node_queue_bw bwspec,
5164     struct node_queue_opt *opts)
5165 {
5166 	struct pf_altq		 pa, pb;
5167 	char			 qname[PF_QNAME_SIZE];
5168 	struct node_queue	*n;
5169 	struct node_queue_bw	 bw;
5170 	int			 errs = 0;
5171 
5172 	if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
5173 		FREE_LIST(struct node_if, interfaces);
5174 		if (nqueues)
5175 			FREE_LIST(struct node_queue, nqueues);
5176 		return (0);
5177 	}
5178 
5179 	LOOP_THROUGH(struct node_if, interface, interfaces,
5180 		memcpy(&pa, a, sizeof(struct pf_altq));
5181 		if (strlcpy(pa.ifname, interface->ifname,
5182 		    sizeof(pa.ifname)) >= sizeof(pa.ifname))
5183 			errx(1, "expand_altq: strlcpy");
5184 
5185 		if (interface->not) {
5186 			yyerror("altq on ! <interface> is not supported");
5187 			errs++;
5188 		} else {
5189 			if (eval_pfaltq(pf, &pa, &bwspec, opts))
5190 				errs++;
5191 			else
5192 				if (pfctl_add_altq(pf, &pa))
5193 					errs++;
5194 
5195 			if (pf->opts & PF_OPT_VERBOSE) {
5196 				print_altq(&pf->paltq->altq, 0,
5197 				    &bwspec, opts);
5198 				if (nqueues && nqueues->tail) {
5199 					printf("queue { ");
5200 					LOOP_THROUGH(struct node_queue, queue,
5201 					    nqueues,
5202 						printf("%s ",
5203 						    queue->queue);
5204 					);
5205 					printf("}");
5206 				}
5207 				printf("\n");
5208 			}
5209 
5210 			if (pa.scheduler == ALTQT_CBQ ||
5211 			    pa.scheduler == ALTQT_HFSC ||
5212 			    pa.scheduler == ALTQT_FAIRQ) {
5213 				/* now create a root queue */
5214 				memset(&pb, 0, sizeof(struct pf_altq));
5215 				if (strlcpy(qname, "root_", sizeof(qname)) >=
5216 				    sizeof(qname))
5217 					errx(1, "expand_altq: strlcpy");
5218 				if (strlcat(qname, interface->ifname,
5219 				    sizeof(qname)) >= sizeof(qname))
5220 					errx(1, "expand_altq: strlcat");
5221 				if (strlcpy(pb.qname, qname,
5222 				    sizeof(pb.qname)) >= sizeof(pb.qname))
5223 					errx(1, "expand_altq: strlcpy");
5224 				if (strlcpy(pb.ifname, interface->ifname,
5225 				    sizeof(pb.ifname)) >= sizeof(pb.ifname))
5226 					errx(1, "expand_altq: strlcpy");
5227 				pb.qlimit = pa.qlimit;
5228 				pb.scheduler = pa.scheduler;
5229 				bw.bw_absolute = pa.ifbandwidth;
5230 				bw.bw_percent = 0;
5231 				if (eval_pfqueue(pf, &pb, &bw, opts))
5232 					errs++;
5233 				else
5234 					if (pfctl_add_altq(pf, &pb))
5235 						errs++;
5236 			}
5237 
5238 			LOOP_THROUGH(struct node_queue, queue, nqueues,
5239 				n = calloc(1, sizeof(struct node_queue));
5240 				if (n == NULL)
5241 					err(1, "expand_altq: calloc");
5242 				if (pa.scheduler == ALTQT_CBQ ||
5243 				    pa.scheduler == ALTQT_HFSC ||
5244 				    pa.scheduler == ALTQT_FAIRQ)
5245 					if (strlcpy(n->parent, qname,
5246 					    sizeof(n->parent)) >=
5247 					    sizeof(n->parent))
5248 						errx(1, "expand_altq: strlcpy");
5249 				if (strlcpy(n->queue, queue->queue,
5250 				    sizeof(n->queue)) >= sizeof(n->queue))
5251 					errx(1, "expand_altq: strlcpy");
5252 				if (strlcpy(n->ifname, interface->ifname,
5253 				    sizeof(n->ifname)) >= sizeof(n->ifname))
5254 					errx(1, "expand_altq: strlcpy");
5255 				n->scheduler = pa.scheduler;
5256 				n->next = NULL;
5257 				n->tail = n;
5258 				if (queues == NULL)
5259 					queues = n;
5260 				else {
5261 					queues->tail->next = n;
5262 					queues->tail = n;
5263 				}
5264 			);
5265 		}
5266 	);
5267 	FREE_LIST(struct node_if, interfaces);
5268 	if (nqueues)
5269 		FREE_LIST(struct node_queue, nqueues);
5270 
5271 	return (errs);
5272 }
5273 
5274 int
5275 expand_queue(struct pf_altq *a, struct node_if *interfaces,
5276     struct node_queue *nqueues, struct node_queue_bw bwspec,
5277     struct node_queue_opt *opts)
5278 {
5279 	struct node_queue	*n, *nq;
5280 	struct pf_altq		 pa;
5281 	u_int8_t		 found = 0;
5282 	u_int8_t		 errs = 0;
5283 
5284 	if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
5285 		FREE_LIST(struct node_queue, nqueues);
5286 		return (0);
5287 	}
5288 
5289 	if (queues == NULL) {
5290 		yyerror("queue %s has no parent", a->qname);
5291 		FREE_LIST(struct node_queue, nqueues);
5292 		return (1);
5293 	}
5294 
5295 	LOOP_THROUGH(struct node_if, interface, interfaces,
5296 		LOOP_THROUGH(struct node_queue, tqueue, queues,
5297 			if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
5298 			    (interface->ifname[0] == 0 ||
5299 			    (!interface->not && !strncmp(interface->ifname,
5300 			    tqueue->ifname, IFNAMSIZ)) ||
5301 			    (interface->not && strncmp(interface->ifname,
5302 			    tqueue->ifname, IFNAMSIZ)))) {
5303 				/* found ourself in queues */
5304 				found++;
5305 
5306 				memcpy(&pa, a, sizeof(struct pf_altq));
5307 
5308 				if (pa.scheduler != ALTQT_NONE &&
5309 				    pa.scheduler != tqueue->scheduler) {
5310 					yyerror("exactly one scheduler type "
5311 					    "per interface allowed");
5312 					return (1);
5313 				}
5314 				pa.scheduler = tqueue->scheduler;
5315 
5316 				/* scheduler dependent error checking */
5317 				switch (pa.scheduler) {
5318 				case ALTQT_PRIQ:
5319 					if (nqueues != NULL) {
5320 						yyerror("priq queues cannot "
5321 						    "have child queues");
5322 						return (1);
5323 					}
5324 					if (bwspec.bw_absolute > 0 ||
5325 					    bwspec.bw_percent < 100) {
5326 						yyerror("priq doesn't take "
5327 						    "bandwidth");
5328 						return (1);
5329 					}
5330 					break;
5331 				default:
5332 					break;
5333 				}
5334 
5335 				if (strlcpy(pa.ifname, tqueue->ifname,
5336 				    sizeof(pa.ifname)) >= sizeof(pa.ifname))
5337 					errx(1, "expand_queue: strlcpy");
5338 				if (strlcpy(pa.parent, tqueue->parent,
5339 				    sizeof(pa.parent)) >= sizeof(pa.parent))
5340 					errx(1, "expand_queue: strlcpy");
5341 
5342 				if (eval_pfqueue(pf, &pa, &bwspec, opts))
5343 					errs++;
5344 				else
5345 					if (pfctl_add_altq(pf, &pa))
5346 						errs++;
5347 
5348 				for (nq = nqueues; nq != NULL; nq = nq->next) {
5349 					if (!strcmp(a->qname, nq->queue)) {
5350 						yyerror("queue cannot have "
5351 						    "itself as child");
5352 						errs++;
5353 						continue;
5354 					}
5355 					n = calloc(1,
5356 					    sizeof(struct node_queue));
5357 					if (n == NULL)
5358 						err(1, "expand_queue: calloc");
5359 					if (strlcpy(n->parent, a->qname,
5360 					    sizeof(n->parent)) >=
5361 					    sizeof(n->parent))
5362 						errx(1, "expand_queue strlcpy");
5363 					if (strlcpy(n->queue, nq->queue,
5364 					    sizeof(n->queue)) >=
5365 					    sizeof(n->queue))
5366 						errx(1, "expand_queue strlcpy");
5367 					if (strlcpy(n->ifname, tqueue->ifname,
5368 					    sizeof(n->ifname)) >=
5369 					    sizeof(n->ifname))
5370 						errx(1, "expand_queue strlcpy");
5371 					n->scheduler = tqueue->scheduler;
5372 					n->next = NULL;
5373 					n->tail = n;
5374 					if (queues == NULL)
5375 						queues = n;
5376 					else {
5377 						queues->tail->next = n;
5378 						queues->tail = n;
5379 					}
5380 				}
5381 				if ((pf->opts & PF_OPT_VERBOSE) && (
5382 				    (found == 1 && interface->ifname[0] == 0) ||
5383 				    (found > 0 && interface->ifname[0] != 0))) {
5384 					print_queue(&pf->paltq->altq, 0,
5385 					    &bwspec, interface->ifname[0] != 0,
5386 					    opts);
5387 					if (nqueues && nqueues->tail) {
5388 						printf("{ ");
5389 						LOOP_THROUGH(struct node_queue,
5390 						    queue, nqueues,
5391 							printf("%s ",
5392 							    queue->queue);
5393 						);
5394 						printf("}");
5395 					}
5396 					printf("\n");
5397 				}
5398 			}
5399 		);
5400 	);
5401 
5402 	FREE_LIST(struct node_queue, nqueues);
5403 	FREE_LIST(struct node_if, interfaces);
5404 
5405 	if (!found) {
5406 		yyerror("queue %s has no parent", a->qname);
5407 		errs++;
5408 	}
5409 
5410 	if (errs)
5411 		return (1);
5412 	else
5413 		return (0);
5414 }
5415 
5416 void
5417 expand_rule(struct pfctl_rule *r,
5418     struct node_if *interfaces, struct node_host *rpool_hosts,
5419     struct node_proto *protos, struct node_os *src_oses,
5420     struct node_host *src_hosts, struct node_port *src_ports,
5421     struct node_host *dst_hosts, struct node_port *dst_ports,
5422     struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
5423     const char *anchor_call)
5424 {
5425 	sa_family_t		 af = r->af;
5426 	int			 added = 0, error = 0;
5427 	char			 ifname[IF_NAMESIZE];
5428 	char			 label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
5429 	char			 tagname[PF_TAG_NAME_SIZE];
5430 	char			 match_tagname[PF_TAG_NAME_SIZE];
5431 	struct pf_pooladdr	*pa;
5432 	struct node_host	*h;
5433 	u_int8_t		 flags, flagset, keep_state;
5434 
5435 	memcpy(label, r->label, sizeof(r->label));
5436 	assert(sizeof(r->label) == sizeof(label));
5437 	if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
5438 		errx(1, "expand_rule: strlcpy");
5439 	if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
5440 	    sizeof(match_tagname))
5441 		errx(1, "expand_rule: strlcpy");
5442 	flags = r->flags;
5443 	flagset = r->flagset;
5444 	keep_state = r->keep_state;
5445 
5446 	LOOP_THROUGH(struct node_if, interface, interfaces,
5447 	LOOP_THROUGH(struct node_proto, proto, protos,
5448 	LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
5449 	LOOP_THROUGH(struct node_host, src_host, src_hosts,
5450 	LOOP_THROUGH(struct node_port, src_port, src_ports,
5451 	LOOP_THROUGH(struct node_os, src_os, src_oses,
5452 	LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
5453 	LOOP_THROUGH(struct node_port, dst_port, dst_ports,
5454 	LOOP_THROUGH(struct node_uid, uid, uids,
5455 	LOOP_THROUGH(struct node_gid, gid, gids,
5456 
5457 		r->af = af;
5458 		/* for link-local IPv6 address, interface must match up */
5459 		if ((r->af && src_host->af && r->af != src_host->af) ||
5460 		    (r->af && dst_host->af && r->af != dst_host->af) ||
5461 		    (src_host->af && dst_host->af &&
5462 		    src_host->af != dst_host->af) ||
5463 		    (src_host->ifindex && dst_host->ifindex &&
5464 		    src_host->ifindex != dst_host->ifindex) ||
5465 		    (src_host->ifindex && *interface->ifname &&
5466 		    src_host->ifindex != if_nametoindex(interface->ifname)) ||
5467 		    (dst_host->ifindex && *interface->ifname &&
5468 		    dst_host->ifindex != if_nametoindex(interface->ifname)))
5469 			continue;
5470 		if (!r->af && src_host->af)
5471 			r->af = src_host->af;
5472 		else if (!r->af && dst_host->af)
5473 			r->af = dst_host->af;
5474 
5475 		if (*interface->ifname)
5476 			strlcpy(r->ifname, interface->ifname,
5477 			    sizeof(r->ifname));
5478 		else if (if_indextoname(src_host->ifindex, ifname))
5479 			strlcpy(r->ifname, ifname, sizeof(r->ifname));
5480 		else if (if_indextoname(dst_host->ifindex, ifname))
5481 			strlcpy(r->ifname, ifname, sizeof(r->ifname));
5482 		else
5483 			memset(r->ifname, '\0', sizeof(r->ifname));
5484 
5485 		memcpy(r->label, label, sizeof(r->label));
5486 		if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
5487 		    sizeof(r->tagname))
5488 			errx(1, "expand_rule: strlcpy");
5489 		if (strlcpy(r->match_tagname, match_tagname,
5490 		    sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
5491 			errx(1, "expand_rule: strlcpy");
5492 
5493 		error += check_netmask(src_host, r->af);
5494 		error += check_netmask(dst_host, r->af);
5495 
5496 		r->ifnot = interface->not;
5497 		r->proto = proto->proto;
5498 		r->src.addr = src_host->addr;
5499 		r->src.neg = src_host->not;
5500 		r->src.port[0] = src_port->port[0];
5501 		r->src.port[1] = src_port->port[1];
5502 		r->src.port_op = src_port->op;
5503 		r->dst.addr = dst_host->addr;
5504 		r->dst.neg = dst_host->not;
5505 		r->dst.port[0] = dst_port->port[0];
5506 		r->dst.port[1] = dst_port->port[1];
5507 		r->dst.port_op = dst_port->op;
5508 		r->uid.op = uid->op;
5509 		r->uid.uid[0] = uid->uid[0];
5510 		r->uid.uid[1] = uid->uid[1];
5511 		r->gid.op = gid->op;
5512 		r->gid.gid[0] = gid->gid[0];
5513 		r->gid.gid[1] = gid->gid[1];
5514 		r->type = icmp_type->type;
5515 		r->code = icmp_type->code;
5516 
5517 		if ((keep_state == PF_STATE_MODULATE ||
5518 		    keep_state == PF_STATE_SYNPROXY) &&
5519 		    r->proto && r->proto != IPPROTO_TCP)
5520 			r->keep_state = PF_STATE_NORMAL;
5521 		else
5522 			r->keep_state = keep_state;
5523 
5524 		if (r->proto && r->proto != IPPROTO_TCP) {
5525 			r->flags = 0;
5526 			r->flagset = 0;
5527 		} else {
5528 			r->flags = flags;
5529 			r->flagset = flagset;
5530 		}
5531 		if (icmp_type->proto && r->proto != icmp_type->proto) {
5532 			yyerror("icmp-type mismatch");
5533 			error++;
5534 		}
5535 
5536 		if (src_os && src_os->os) {
5537 			r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
5538 			if ((pf->opts & PF_OPT_VERBOSE2) &&
5539 			    r->os_fingerprint == PF_OSFP_NOMATCH)
5540 				fprintf(stderr,
5541 				    "warning: unknown '%s' OS fingerprint\n",
5542 				    src_os->os);
5543 		} else {
5544 			r->os_fingerprint = PF_OSFP_ANY;
5545 		}
5546 
5547 		TAILQ_INIT(&r->rpool.list);
5548 		for (h = rpool_hosts; h != NULL; h = h->next) {
5549 			pa = calloc(1, sizeof(struct pf_pooladdr));
5550 			if (pa == NULL)
5551 				err(1, "expand_rule: calloc");
5552 			pa->addr = h->addr;
5553 			if (h->ifname != NULL) {
5554 				if (strlcpy(pa->ifname, h->ifname,
5555 				    sizeof(pa->ifname)) >=
5556 				    sizeof(pa->ifname))
5557 					errx(1, "expand_rule: strlcpy");
5558 			} else
5559 				pa->ifname[0] = 0;
5560 			TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries);
5561 		}
5562 
5563 		if (rule_consistent(r, anchor_call[0]) < 0 || error)
5564 			yyerror("skipping rule due to errors");
5565 		else {
5566 			r->nr = pf->astack[pf->asd]->match++;
5567 			pfctl_append_rule(pf, r, anchor_call);
5568 			added++;
5569 		}
5570 
5571 	))))))))));
5572 
5573 	FREE_LIST(struct node_if, interfaces);
5574 	FREE_LIST(struct node_proto, protos);
5575 	FREE_LIST(struct node_host, src_hosts);
5576 	FREE_LIST(struct node_port, src_ports);
5577 	FREE_LIST(struct node_os, src_oses);
5578 	FREE_LIST(struct node_host, dst_hosts);
5579 	FREE_LIST(struct node_port, dst_ports);
5580 	FREE_LIST(struct node_uid, uids);
5581 	FREE_LIST(struct node_gid, gids);
5582 	FREE_LIST(struct node_icmp, icmp_types);
5583 	FREE_LIST(struct node_host, rpool_hosts);
5584 
5585 	if (!added)
5586 		yyerror("rule expands to no valid combination");
5587 }
5588 
5589 int
5590 expand_skip_interface(struct node_if *interfaces)
5591 {
5592 	int	errs = 0;
5593 
5594 	if (!interfaces || (!interfaces->next && !interfaces->not &&
5595 	    !strcmp(interfaces->ifname, "none"))) {
5596 		if (pf->opts & PF_OPT_VERBOSE)
5597 			printf("set skip on none\n");
5598 		errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
5599 		return (errs);
5600 	}
5601 
5602 	if (pf->opts & PF_OPT_VERBOSE)
5603 		printf("set skip on {");
5604 	LOOP_THROUGH(struct node_if, interface, interfaces,
5605 		if (pf->opts & PF_OPT_VERBOSE)
5606 			printf(" %s", interface->ifname);
5607 		if (interface->not) {
5608 			yyerror("skip on ! <interface> is not supported");
5609 			errs++;
5610 		} else
5611 			errs += pfctl_set_interface_flags(pf,
5612 			    interface->ifname, PFI_IFLAG_SKIP, 1);
5613 	);
5614 	if (pf->opts & PF_OPT_VERBOSE)
5615 		printf(" }\n");
5616 
5617 	FREE_LIST(struct node_if, interfaces);
5618 
5619 	if (errs)
5620 		return (1);
5621 	else
5622 		return (0);
5623 }
5624 
5625 #undef FREE_LIST
5626 #undef LOOP_THROUGH
5627 
5628 int
5629 check_rulestate(int desired_state)
5630 {
5631 	if (require_order && (rulestate > desired_state)) {
5632 		yyerror("Rules must be in order: options, normalization, "
5633 		    "queueing, translation, filtering");
5634 		return (1);
5635 	}
5636 	rulestate = desired_state;
5637 	return (0);
5638 }
5639 
5640 int
5641 kw_cmp(const void *k, const void *e)
5642 {
5643 	return (strcmp(k, ((const struct keywords *)e)->k_name));
5644 }
5645 
5646 int
5647 lookup(char *s)
5648 {
5649 	/* this has to be sorted always */
5650 	static const struct keywords keywords[] = {
5651 		{ "all",		ALL},
5652 		{ "allow-opts",		ALLOWOPTS},
5653 		{ "altq",		ALTQ},
5654 		{ "anchor",		ANCHOR},
5655 		{ "antispoof",		ANTISPOOF},
5656 		{ "any",		ANY},
5657 		{ "bandwidth",		BANDWIDTH},
5658 		{ "binat",		BINAT},
5659 		{ "binat-anchor",	BINATANCHOR},
5660 		{ "bitmask",		BITMASK},
5661 		{ "block",		BLOCK},
5662 		{ "block-policy",	BLOCKPOLICY},
5663 		{ "buckets",		BUCKETS},
5664 		{ "cbq",		CBQ},
5665 		{ "code",		CODE},
5666 		{ "codelq",		CODEL},
5667 		{ "crop",		FRAGCROP},
5668 		{ "debug",		DEBUG},
5669 		{ "divert-reply",	DIVERTREPLY},
5670 		{ "divert-to",		DIVERTTO},
5671 		{ "dnpipe",		DNPIPE},
5672 		{ "dnqueue",		DNQUEUE},
5673 		{ "drop",		DROP},
5674 		{ "drop-ovl",		FRAGDROP},
5675 		{ "dup-to",		DUPTO},
5676 		{ "fail-policy",	FAILPOLICY},
5677 		{ "fairq",		FAIRQ},
5678 		{ "fastroute",		FASTROUTE},
5679 		{ "file",		FILENAME},
5680 		{ "fingerprints",	FINGERPRINTS},
5681 		{ "flags",		FLAGS},
5682 		{ "floating",		FLOATING},
5683 		{ "flush",		FLUSH},
5684 		{ "for",		FOR},
5685 		{ "fragment",		FRAGMENT},
5686 		{ "from",		FROM},
5687 		{ "global",		GLOBAL},
5688 		{ "group",		GROUP},
5689 		{ "hfsc",		HFSC},
5690 		{ "hogs",		HOGS},
5691 		{ "hostid",		HOSTID},
5692 		{ "icmp-type",		ICMPTYPE},
5693 		{ "icmp6-type",		ICMP6TYPE},
5694 		{ "if-bound",		IFBOUND},
5695 		{ "in",			IN},
5696 		{ "include",		INCLUDE},
5697 		{ "inet",		INET},
5698 		{ "inet6",		INET6},
5699 		{ "interval",		INTERVAL},
5700 		{ "keep",		KEEP},
5701 		{ "keepcounters",	KEEPCOUNTERS},
5702 		{ "label",		LABEL},
5703 		{ "limit",		LIMIT},
5704 		{ "linkshare",		LINKSHARE},
5705 		{ "load",		LOAD},
5706 		{ "log",		LOG},
5707 		{ "loginterface",	LOGINTERFACE},
5708 		{ "map-e-portset",	MAPEPORTSET},
5709 		{ "match",		MATCH},
5710 		{ "max",		MAXIMUM},
5711 		{ "max-mss",		MAXMSS},
5712 		{ "max-src-conn",	MAXSRCCONN},
5713 		{ "max-src-conn-rate",	MAXSRCCONNRATE},
5714 		{ "max-src-nodes",	MAXSRCNODES},
5715 		{ "max-src-states",	MAXSRCSTATES},
5716 		{ "min-ttl",		MINTTL},
5717 		{ "modulate",		MODULATE},
5718 		{ "nat",		NAT},
5719 		{ "nat-anchor",		NATANCHOR},
5720 		{ "no",			NO},
5721 		{ "no-df",		NODF},
5722 		{ "no-route",		NOROUTE},
5723 		{ "no-sync",		NOSYNC},
5724 		{ "on",			ON},
5725 		{ "optimization",	OPTIMIZATION},
5726 		{ "os",			OS},
5727 		{ "out",		OUT},
5728 		{ "overload",		OVERLOAD},
5729 		{ "pass",		PASS},
5730 		{ "port",		PORT},
5731 		{ "prio",		PRIO},
5732 		{ "priority",		PRIORITY},
5733 		{ "priq",		PRIQ},
5734 		{ "probability",	PROBABILITY},
5735 		{ "proto",		PROTO},
5736 		{ "qlimit",		QLIMIT},
5737 		{ "queue",		QUEUE},
5738 		{ "quick",		QUICK},
5739 		{ "random",		RANDOM},
5740 		{ "random-id",		RANDOMID},
5741 		{ "rdr",		RDR},
5742 		{ "rdr-anchor",		RDRANCHOR},
5743 		{ "realtime",		REALTIME},
5744 		{ "reassemble",		REASSEMBLE},
5745 		{ "reply-to",		REPLYTO},
5746 		{ "require-order",	REQUIREORDER},
5747 		{ "return",		RETURN},
5748 		{ "return-icmp",	RETURNICMP},
5749 		{ "return-icmp6",	RETURNICMP6},
5750 		{ "return-rst",		RETURNRST},
5751 		{ "ridentifier",	RIDENTIFIER},
5752 		{ "round-robin",	ROUNDROBIN},
5753 		{ "route",		ROUTE},
5754 		{ "route-to",		ROUTETO},
5755 		{ "rtable",		RTABLE},
5756 		{ "rule",		RULE},
5757 		{ "ruleset-optimization",	RULESET_OPTIMIZATION},
5758 		{ "scrub",		SCRUB},
5759 		{ "set",		SET},
5760 		{ "set-tos",		SETTOS},
5761 		{ "skip",		SKIP},
5762 		{ "sloppy",		SLOPPY},
5763 		{ "source-hash",	SOURCEHASH},
5764 		{ "source-track",	SOURCETRACK},
5765 		{ "state",		STATE},
5766 		{ "state-defaults",	STATEDEFAULTS},
5767 		{ "state-policy",	STATEPOLICY},
5768 		{ "static-port",	STATICPORT},
5769 		{ "sticky-address",	STICKYADDRESS},
5770 		{ "syncookies",         SYNCOOKIES},
5771 		{ "synproxy",		SYNPROXY},
5772 		{ "table",		TABLE},
5773 		{ "tag",		TAG},
5774 		{ "tagged",		TAGGED},
5775 		{ "target",		TARGET},
5776 		{ "tbrsize",		TBRSIZE},
5777 		{ "timeout",		TIMEOUT},
5778 		{ "to",			TO},
5779 		{ "tos",		TOS},
5780 		{ "ttl",		TTL},
5781 		{ "upperlimit",		UPPERLIMIT},
5782 		{ "urpf-failed",	URPFFAILED},
5783 		{ "user",		USER},
5784 	};
5785 	const struct keywords	*p;
5786 
5787 	p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
5788 	    sizeof(keywords[0]), kw_cmp);
5789 
5790 	if (p) {
5791 		if (debug > 1)
5792 			fprintf(stderr, "%s: %d\n", s, p->k_val);
5793 		return (p->k_val);
5794 	} else {
5795 		if (debug > 1)
5796 			fprintf(stderr, "string: %s\n", s);
5797 		return (STRING);
5798 	}
5799 }
5800 
5801 #define MAXPUSHBACK	128
5802 
5803 static char	*parsebuf;
5804 static int	 parseindex;
5805 static char	 pushback_buffer[MAXPUSHBACK];
5806 static int	 pushback_index = 0;
5807 
5808 int
5809 lgetc(int quotec)
5810 {
5811 	int		c, next;
5812 
5813 	if (parsebuf) {
5814 		/* Read character from the parsebuffer instead of input. */
5815 		if (parseindex >= 0) {
5816 			c = parsebuf[parseindex++];
5817 			if (c != '\0')
5818 				return (c);
5819 			parsebuf = NULL;
5820 		} else
5821 			parseindex++;
5822 	}
5823 
5824 	if (pushback_index)
5825 		return (pushback_buffer[--pushback_index]);
5826 
5827 	if (quotec) {
5828 		if ((c = getc(file->stream)) == EOF) {
5829 			yyerror("reached end of file while parsing quoted string");
5830 			if (popfile() == EOF)
5831 				return (EOF);
5832 			return (quotec);
5833 		}
5834 		return (c);
5835 	}
5836 
5837 	while ((c = getc(file->stream)) == '\\') {
5838 		next = getc(file->stream);
5839 		if (next != '\n') {
5840 			c = next;
5841 			break;
5842 		}
5843 		yylval.lineno = file->lineno;
5844 		file->lineno++;
5845 	}
5846 
5847 	while (c == EOF) {
5848 		if (popfile() == EOF)
5849 			return (EOF);
5850 		c = getc(file->stream);
5851 	}
5852 	return (c);
5853 }
5854 
5855 int
5856 lungetc(int c)
5857 {
5858 	if (c == EOF)
5859 		return (EOF);
5860 	if (parsebuf) {
5861 		parseindex--;
5862 		if (parseindex >= 0)
5863 			return (c);
5864 	}
5865 	if (pushback_index < MAXPUSHBACK-1)
5866 		return (pushback_buffer[pushback_index++] = c);
5867 	else
5868 		return (EOF);
5869 }
5870 
5871 int
5872 findeol(void)
5873 {
5874 	int	c;
5875 
5876 	parsebuf = NULL;
5877 
5878 	/* skip to either EOF or the first real EOL */
5879 	while (1) {
5880 		if (pushback_index)
5881 			c = pushback_buffer[--pushback_index];
5882 		else
5883 			c = lgetc(0);
5884 		if (c == '\n') {
5885 			file->lineno++;
5886 			break;
5887 		}
5888 		if (c == EOF)
5889 			break;
5890 	}
5891 	return (ERROR);
5892 }
5893 
5894 int
5895 yylex(void)
5896 {
5897 	char	 buf[8096];
5898 	char	*p, *val;
5899 	int	 quotec, next, c;
5900 	int	 token;
5901 
5902 top:
5903 	p = buf;
5904 	while ((c = lgetc(0)) == ' ' || c == '\t')
5905 		; /* nothing */
5906 
5907 	yylval.lineno = file->lineno;
5908 	if (c == '#')
5909 		while ((c = lgetc(0)) != '\n' && c != EOF)
5910 			; /* nothing */
5911 	if (c == '$' && parsebuf == NULL) {
5912 		while (1) {
5913 			if ((c = lgetc(0)) == EOF)
5914 				return (0);
5915 
5916 			if (p + 1 >= buf + sizeof(buf) - 1) {
5917 				yyerror("string too long");
5918 				return (findeol());
5919 			}
5920 			if (isalnum(c) || c == '_') {
5921 				*p++ = (char)c;
5922 				continue;
5923 			}
5924 			*p = '\0';
5925 			lungetc(c);
5926 			break;
5927 		}
5928 		val = symget(buf);
5929 		if (val == NULL) {
5930 			yyerror("macro '%s' not defined", buf);
5931 			return (findeol());
5932 		}
5933 		parsebuf = val;
5934 		parseindex = 0;
5935 		goto top;
5936 	}
5937 
5938 	switch (c) {
5939 	case '\'':
5940 	case '"':
5941 		quotec = c;
5942 		while (1) {
5943 			if ((c = lgetc(quotec)) == EOF)
5944 				return (0);
5945 			if (c == '\n') {
5946 				file->lineno++;
5947 				continue;
5948 			} else if (c == '\\') {
5949 				if ((next = lgetc(quotec)) == EOF)
5950 					return (0);
5951 				if (next == quotec || c == ' ' || c == '\t')
5952 					c = next;
5953 				else if (next == '\n') {
5954 					file->lineno++;
5955 					continue;
5956 				}
5957 				else
5958 					lungetc(next);
5959 			} else if (c == quotec) {
5960 				*p = '\0';
5961 				break;
5962 			}
5963 			if (p + 1 >= buf + sizeof(buf) - 1) {
5964 				yyerror("string too long");
5965 				return (findeol());
5966 			}
5967 			*p++ = (char)c;
5968 		}
5969 		yylval.v.string = strdup(buf);
5970 		if (yylval.v.string == NULL)
5971 			err(1, "yylex: strdup");
5972 		return (STRING);
5973 	case '<':
5974 		next = lgetc(0);
5975 		if (next == '>') {
5976 			yylval.v.i = PF_OP_XRG;
5977 			return (PORTBINARY);
5978 		}
5979 		lungetc(next);
5980 		break;
5981 	case '>':
5982 		next = lgetc(0);
5983 		if (next == '<') {
5984 			yylval.v.i = PF_OP_IRG;
5985 			return (PORTBINARY);
5986 		}
5987 		lungetc(next);
5988 		break;
5989 	case '-':
5990 		next = lgetc(0);
5991 		if (next == '>')
5992 			return (ARROW);
5993 		lungetc(next);
5994 		break;
5995 	}
5996 
5997 #define allowed_to_end_number(x) \
5998 	(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
5999 
6000 	if (c == '-' || isdigit(c)) {
6001 		do {
6002 			*p++ = c;
6003 			if ((unsigned)(p-buf) >= sizeof(buf)) {
6004 				yyerror("string too long");
6005 				return (findeol());
6006 			}
6007 		} while ((c = lgetc(0)) != EOF && isdigit(c));
6008 		lungetc(c);
6009 		if (p == buf + 1 && buf[0] == '-')
6010 			goto nodigits;
6011 		if (c == EOF || allowed_to_end_number(c)) {
6012 			const char *errstr = NULL;
6013 
6014 			*p = '\0';
6015 			yylval.v.number = strtonum(buf, LLONG_MIN,
6016 			    LLONG_MAX, &errstr);
6017 			if (errstr) {
6018 				yyerror("\"%s\" invalid number: %s",
6019 				    buf, errstr);
6020 				return (findeol());
6021 			}
6022 			return (NUMBER);
6023 		} else {
6024 nodigits:
6025 			while (p > buf + 1)
6026 				lungetc(*--p);
6027 			c = *--p;
6028 			if (c == '-')
6029 				return (c);
6030 		}
6031 	}
6032 
6033 #define allowed_in_string(x) \
6034 	(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
6035 	x != '{' && x != '}' && x != '<' && x != '>' && \
6036 	x != '!' && x != '=' && x != '/' && x != '#' && \
6037 	x != ','))
6038 
6039 	if (isalnum(c) || c == ':' || c == '_') {
6040 		do {
6041 			*p++ = c;
6042 			if ((unsigned)(p-buf) >= sizeof(buf)) {
6043 				yyerror("string too long");
6044 				return (findeol());
6045 			}
6046 		} while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
6047 		lungetc(c);
6048 		*p = '\0';
6049 		if ((token = lookup(buf)) == STRING)
6050 			if ((yylval.v.string = strdup(buf)) == NULL)
6051 				err(1, "yylex: strdup");
6052 		return (token);
6053 	}
6054 	if (c == '\n') {
6055 		yylval.lineno = file->lineno;
6056 		file->lineno++;
6057 	}
6058 	if (c == EOF)
6059 		return (0);
6060 	return (c);
6061 }
6062 
6063 int
6064 check_file_secrecy(int fd, const char *fname)
6065 {
6066 	struct stat	st;
6067 
6068 	if (fstat(fd, &st)) {
6069 		warn("cannot stat %s", fname);
6070 		return (-1);
6071 	}
6072 	if (st.st_uid != 0 && st.st_uid != getuid()) {
6073 		warnx("%s: owner not root or current user", fname);
6074 		return (-1);
6075 	}
6076 	if (st.st_mode & (S_IRWXG | S_IRWXO)) {
6077 		warnx("%s: group/world readable/writeable", fname);
6078 		return (-1);
6079 	}
6080 	return (0);
6081 }
6082 
6083 struct file *
6084 pushfile(const char *name, int secret)
6085 {
6086 	struct file	*nfile;
6087 
6088 	if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
6089 	    (nfile->name = strdup(name)) == NULL) {
6090 		warn("malloc");
6091 		return (NULL);
6092 	}
6093 	if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
6094 		nfile->stream = stdin;
6095 		free(nfile->name);
6096 		if ((nfile->name = strdup("stdin")) == NULL) {
6097 			warn("strdup");
6098 			free(nfile);
6099 			return (NULL);
6100 		}
6101 	} else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
6102 		warn("%s", nfile->name);
6103 		free(nfile->name);
6104 		free(nfile);
6105 		return (NULL);
6106 	} else if (secret &&
6107 	    check_file_secrecy(fileno(nfile->stream), nfile->name)) {
6108 		fclose(nfile->stream);
6109 		free(nfile->name);
6110 		free(nfile);
6111 		return (NULL);
6112 	}
6113 	nfile->lineno = 1;
6114 	TAILQ_INSERT_TAIL(&files, nfile, entry);
6115 	return (nfile);
6116 }
6117 
6118 int
6119 popfile(void)
6120 {
6121 	struct file	*prev;
6122 
6123 	if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
6124 		prev->errors += file->errors;
6125 		TAILQ_REMOVE(&files, file, entry);
6126 		fclose(file->stream);
6127 		free(file->name);
6128 		free(file);
6129 		file = prev;
6130 		return (0);
6131 	}
6132 	return (EOF);
6133 }
6134 
6135 int
6136 parse_config(char *filename, struct pfctl *xpf)
6137 {
6138 	int		 errors = 0;
6139 	struct sym	*sym;
6140 
6141 	pf = xpf;
6142 	errors = 0;
6143 	rulestate = PFCTL_STATE_NONE;
6144 	returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
6145 	returnicmp6default =
6146 	    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
6147 	blockpolicy = PFRULE_DROP;
6148 	failpolicy = PFRULE_DROP;
6149 	require_order = 1;
6150 
6151 	if ((file = pushfile(filename, 0)) == NULL) {
6152 		warn("cannot open the main config file!");
6153 		return (-1);
6154 	}
6155 
6156 	yyparse();
6157 	errors = file->errors;
6158 	popfile();
6159 
6160 	/* Free macros and check which have not been used. */
6161 	while ((sym = TAILQ_FIRST(&symhead))) {
6162 		if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
6163 			fprintf(stderr, "warning: macro '%s' not "
6164 			    "used\n", sym->nam);
6165 		free(sym->nam);
6166 		free(sym->val);
6167 		TAILQ_REMOVE(&symhead, sym, entry);
6168 		free(sym);
6169 	}
6170 
6171 	return (errors ? -1 : 0);
6172 }
6173 
6174 int
6175 symset(const char *nam, const char *val, int persist)
6176 {
6177 	struct sym	*sym;
6178 
6179 	for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
6180 	    sym = TAILQ_NEXT(sym, entry))
6181 		;	/* nothing */
6182 
6183 	if (sym != NULL) {
6184 		if (sym->persist == 1)
6185 			return (0);
6186 		else {
6187 			free(sym->nam);
6188 			free(sym->val);
6189 			TAILQ_REMOVE(&symhead, sym, entry);
6190 			free(sym);
6191 		}
6192 	}
6193 	if ((sym = calloc(1, sizeof(*sym))) == NULL)
6194 		return (-1);
6195 
6196 	sym->nam = strdup(nam);
6197 	if (sym->nam == NULL) {
6198 		free(sym);
6199 		return (-1);
6200 	}
6201 	sym->val = strdup(val);
6202 	if (sym->val == NULL) {
6203 		free(sym->nam);
6204 		free(sym);
6205 		return (-1);
6206 	}
6207 	sym->used = 0;
6208 	sym->persist = persist;
6209 	TAILQ_INSERT_TAIL(&symhead, sym, entry);
6210 	return (0);
6211 }
6212 
6213 int
6214 pfctl_cmdline_symset(char *s)
6215 {
6216 	char	*sym, *val;
6217 	int	 ret;
6218 
6219 	if ((val = strrchr(s, '=')) == NULL)
6220 		return (-1);
6221 
6222 	if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
6223 		err(1, "pfctl_cmdline_symset: malloc");
6224 
6225 	strlcpy(sym, s, strlen(s) - strlen(val) + 1);
6226 
6227 	ret = symset(sym, val + 1, 1);
6228 	free(sym);
6229 
6230 	return (ret);
6231 }
6232 
6233 char *
6234 symget(const char *nam)
6235 {
6236 	struct sym	*sym;
6237 
6238 	TAILQ_FOREACH(sym, &symhead, entry)
6239 		if (strcmp(nam, sym->nam) == 0) {
6240 			sym->used = 1;
6241 			return (sym->val);
6242 		}
6243 	return (NULL);
6244 }
6245 
6246 void
6247 mv_rules(struct pfctl_ruleset *src, struct pfctl_ruleset *dst)
6248 {
6249 	int i;
6250 	struct pfctl_rule *r;
6251 
6252 	for (i = 0; i < PF_RULESET_MAX; ++i) {
6253 		while ((r = TAILQ_FIRST(src->rules[i].active.ptr))
6254 		    != NULL) {
6255 			TAILQ_REMOVE(src->rules[i].active.ptr, r, entries);
6256 			TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries);
6257 			dst->anchor->match++;
6258 		}
6259 		src->anchor->match = 0;
6260 		while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr))
6261 		    != NULL) {
6262 			TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries);
6263 			TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr,
6264 				r, entries);
6265 		}
6266 	}
6267 }
6268 
6269 void
6270 decide_address_family(struct node_host *n, sa_family_t *af)
6271 {
6272 	if (*af != 0 || n == NULL)
6273 		return;
6274 	*af = n->af;
6275 	while ((n = n->next) != NULL) {
6276 		if (n->af != *af) {
6277 			*af = 0;
6278 			return;
6279 		}
6280 	}
6281 }
6282 
6283 void
6284 remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
6285 {
6286 	struct node_host	*n = *nh, *prev = NULL;
6287 
6288 	while (n != NULL) {
6289 		if (*af && n->af && n->af != *af) {
6290 			/* unlink and free n */
6291 			struct node_host *next = n->next;
6292 
6293 			/* adjust tail pointer */
6294 			if (n == (*nh)->tail)
6295 				(*nh)->tail = prev;
6296 			/* adjust previous node's next pointer */
6297 			if (prev == NULL)
6298 				*nh = next;
6299 			else
6300 				prev->next = next;
6301 			/* free node */
6302 			if (n->ifname != NULL)
6303 				free(n->ifname);
6304 			free(n);
6305 			n = next;
6306 		} else {
6307 			if (n->af && !*af)
6308 				*af = n->af;
6309 			prev = n;
6310 			n = n->next;
6311 		}
6312 	}
6313 }
6314 
6315 int
6316 invalid_redirect(struct node_host *nh, sa_family_t af)
6317 {
6318 	if (!af) {
6319 		struct node_host *n;
6320 
6321 		/* tables and dyniftl are ok without an address family */
6322 		for (n = nh; n != NULL; n = n->next) {
6323 			if (n->addr.type != PF_ADDR_TABLE &&
6324 			    n->addr.type != PF_ADDR_DYNIFTL) {
6325 				yyerror("address family not given and "
6326 				    "translation address expands to multiple "
6327 				    "address families");
6328 				return (1);
6329 			}
6330 		}
6331 	}
6332 	if (nh == NULL) {
6333 		yyerror("no translation address with matching address family "
6334 		    "found.");
6335 		return (1);
6336 	}
6337 	return (0);
6338 }
6339 
6340 int
6341 atoul(char *s, u_long *ulvalp)
6342 {
6343 	u_long	 ulval;
6344 	char	*ep;
6345 
6346 	errno = 0;
6347 	ulval = strtoul(s, &ep, 0);
6348 	if (s[0] == '\0' || *ep != '\0')
6349 		return (-1);
6350 	if (errno == ERANGE && ulval == ULONG_MAX)
6351 		return (-1);
6352 	*ulvalp = ulval;
6353 	return (0);
6354 }
6355 
6356 int
6357 getservice(char *n)
6358 {
6359 	struct servent	*s;
6360 	u_long		 ulval;
6361 
6362 	if (atoul(n, &ulval) == 0) {
6363 		if (ulval > 65535) {
6364 			yyerror("illegal port value %lu", ulval);
6365 			return (-1);
6366 		}
6367 		return (htons(ulval));
6368 	} else {
6369 		s = getservbyname(n, "tcp");
6370 		if (s == NULL)
6371 			s = getservbyname(n, "udp");
6372 		if (s == NULL) {
6373 			yyerror("unknown port %s", n);
6374 			return (-1);
6375 		}
6376 		return (s->s_port);
6377 	}
6378 }
6379 
6380 int
6381 rule_label(struct pfctl_rule *r, char *s[PF_RULE_MAX_LABEL_COUNT])
6382 {
6383 	for (int i = 0; i < PF_RULE_MAX_LABEL_COUNT; i++) {
6384 		if (s[i] == NULL)
6385 			return (0);
6386 
6387 		if (strlcpy(r->label[i], s[i], sizeof(r->label[0])) >=
6388 		    sizeof(r->label[0])) {
6389 			yyerror("rule label too long (max %d chars)",
6390 			    sizeof(r->label[0])-1);
6391 			return (-1);
6392 		}
6393 	}
6394 	return (0);
6395 }
6396 
6397 u_int16_t
6398 parseicmpspec(char *w, sa_family_t af)
6399 {
6400 	const struct icmpcodeent	*p;
6401 	u_long				 ulval;
6402 	u_int8_t			 icmptype;
6403 
6404 	if (af == AF_INET)
6405 		icmptype = returnicmpdefault >> 8;
6406 	else
6407 		icmptype = returnicmp6default >> 8;
6408 
6409 	if (atoul(w, &ulval) == -1) {
6410 		if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
6411 			yyerror("unknown icmp code %s", w);
6412 			return (0);
6413 		}
6414 		ulval = p->code;
6415 	}
6416 	if (ulval > 255) {
6417 		yyerror("invalid icmp code %lu", ulval);
6418 		return (0);
6419 	}
6420 	return (icmptype << 8 | ulval);
6421 }
6422 
6423 int
6424 parseport(char *port, struct range *r, int extensions)
6425 {
6426 	char	*p = strchr(port, ':');
6427 
6428 	if (p == NULL) {
6429 		if ((r->a = getservice(port)) == -1)
6430 			return (-1);
6431 		r->b = 0;
6432 		r->t = PF_OP_NONE;
6433 		return (0);
6434 	}
6435 	if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
6436 		*p = 0;
6437 		if ((r->a = getservice(port)) == -1)
6438 			return (-1);
6439 		r->b = 0;
6440 		r->t = PF_OP_IRG;
6441 		return (0);
6442 	}
6443 	if ((extensions & PPORT_RANGE)) {
6444 		*p++ = 0;
6445 		if ((r->a = getservice(port)) == -1 ||
6446 		    (r->b = getservice(p)) == -1)
6447 			return (-1);
6448 		if (r->a == r->b) {
6449 			r->b = 0;
6450 			r->t = PF_OP_NONE;
6451 		} else
6452 			r->t = PF_OP_RRG;
6453 		return (0);
6454 	}
6455 	return (-1);
6456 }
6457 
6458 int
6459 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
6460 {
6461 	struct loadanchors	*la;
6462 
6463 	TAILQ_FOREACH(la, &loadanchorshead, entries) {
6464 		if (pf->opts & PF_OPT_VERBOSE)
6465 			fprintf(stderr, "\nLoading anchor %s from %s\n",
6466 			    la->anchorname, la->filename);
6467 		if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
6468 		    la->anchorname, trans) == -1)
6469 			return (-1);
6470 	}
6471 
6472 	return (0);
6473 }
6474 
6475 int
6476 kw_casecmp(const void *k, const void *e)
6477 {
6478 	return (strcasecmp(k, ((const struct keywords *)e)->k_name));
6479 }
6480 
6481 int
6482 map_tos(char *s, int *val)
6483 {
6484 	/* DiffServ Codepoints and other TOS mappings */
6485 	const struct keywords	 toswords[] = {
6486 		{ "af11",		IPTOS_DSCP_AF11 },
6487 		{ "af12",		IPTOS_DSCP_AF12 },
6488 		{ "af13",		IPTOS_DSCP_AF13 },
6489 		{ "af21",		IPTOS_DSCP_AF21 },
6490 		{ "af22",		IPTOS_DSCP_AF22 },
6491 		{ "af23",		IPTOS_DSCP_AF23 },
6492 		{ "af31",		IPTOS_DSCP_AF31 },
6493 		{ "af32",		IPTOS_DSCP_AF32 },
6494 		{ "af33",		IPTOS_DSCP_AF33 },
6495 		{ "af41",		IPTOS_DSCP_AF41 },
6496 		{ "af42",		IPTOS_DSCP_AF42 },
6497 		{ "af43",		IPTOS_DSCP_AF43 },
6498 		{ "critical",		IPTOS_PREC_CRITIC_ECP },
6499 		{ "cs0",		IPTOS_DSCP_CS0 },
6500 		{ "cs1",		IPTOS_DSCP_CS1 },
6501 		{ "cs2",		IPTOS_DSCP_CS2 },
6502 		{ "cs3",		IPTOS_DSCP_CS3 },
6503 		{ "cs4",		IPTOS_DSCP_CS4 },
6504 		{ "cs5",		IPTOS_DSCP_CS5 },
6505 		{ "cs6",		IPTOS_DSCP_CS6 },
6506 		{ "cs7",		IPTOS_DSCP_CS7 },
6507 		{ "ef",			IPTOS_DSCP_EF },
6508 		{ "inetcontrol",	IPTOS_PREC_INTERNETCONTROL },
6509 		{ "lowdelay",		IPTOS_LOWDELAY },
6510 		{ "netcontrol",		IPTOS_PREC_NETCONTROL },
6511 		{ "reliability",	IPTOS_RELIABILITY },
6512 		{ "throughput",		IPTOS_THROUGHPUT },
6513 		{ "va",			IPTOS_DSCP_VA }
6514 	};
6515 	const struct keywords	*p;
6516 
6517 	p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]),
6518 	    sizeof(toswords[0]), kw_casecmp);
6519 
6520 	if (p) {
6521 		*val = p->k_val;
6522 		return (1);
6523 	}
6524 	return (0);
6525 }
6526 
6527 int
6528 rt_tableid_max(void)
6529 {
6530 #ifdef __FreeBSD__
6531 	int fibs;
6532 	size_t l = sizeof(fibs);
6533 
6534         if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1)
6535 		fibs = 16;	/* XXX RT_MAXFIBS, at least limit it some. */
6536 	/*
6537 	 * As the OpenBSD code only compares > and not >= we need to adjust
6538 	 * here given we only accept values of 0..n and want to avoid #ifdefs
6539 	 * in the grammar.
6540 	 */
6541 	return (fibs - 1);
6542 #else
6543 	return (RT_TABLEID_MAX);
6544 #endif
6545 }
6546