xref: /freebsd/sbin/pfctl/parse.y (revision d3d381b2b194b4d24853e92eecef55f262688d1a)
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 <stdio.h>
59 #include <unistd.h>
60 #include <stdlib.h>
61 #include <netdb.h>
62 #include <stdarg.h>
63 #include <errno.h>
64 #include <string.h>
65 #include <ctype.h>
66 #include <math.h>
67 #include <err.h>
68 #include <limits.h>
69 #include <pwd.h>
70 #include <grp.h>
71 #include <md5.h>
72 
73 #include "pfctl_parser.h"
74 #include "pfctl.h"
75 
76 static struct pfctl	*pf = NULL;
77 static int		 debug = 0;
78 static int		 rulestate = 0;
79 static u_int16_t	 returnicmpdefault =
80 			    (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
81 static u_int16_t	 returnicmp6default =
82 			    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
83 static int		 blockpolicy = PFRULE_DROP;
84 static int		 failpolicy = PFRULE_DROP;
85 static int		 require_order = 1;
86 static int		 default_statelock;
87 
88 static TAILQ_HEAD(files, file)	 files = TAILQ_HEAD_INITIALIZER(files);
89 static struct file {
90 	TAILQ_ENTRY(file)	 entry;
91 	FILE			*stream;
92 	char			*name;
93 	int			 lineno;
94 	int			 errors;
95 } *file;
96 struct file	*pushfile(const char *, int);
97 int		 popfile(void);
98 int		 check_file_secrecy(int, const char *);
99 int		 yyparse(void);
100 int		 yylex(void);
101 int		 yyerror(const char *, ...);
102 int		 kw_cmp(const void *, const void *);
103 int		 lookup(char *);
104 int		 lgetc(int);
105 int		 lungetc(int);
106 int		 findeol(void);
107 
108 static TAILQ_HEAD(symhead, sym)	 symhead = TAILQ_HEAD_INITIALIZER(symhead);
109 struct sym {
110 	TAILQ_ENTRY(sym)	 entry;
111 	int			 used;
112 	int			 persist;
113 	char			*nam;
114 	char			*val;
115 };
116 int		 symset(const char *, const char *, int);
117 char		*symget(const char *);
118 
119 int		 atoul(char *, u_long *);
120 
121 enum {
122 	PFCTL_STATE_NONE,
123 	PFCTL_STATE_OPTION,
124 	PFCTL_STATE_SCRUB,
125 	PFCTL_STATE_QUEUE,
126 	PFCTL_STATE_NAT,
127 	PFCTL_STATE_FILTER
128 };
129 
130 struct node_proto {
131 	u_int8_t		 proto;
132 	struct node_proto	*next;
133 	struct node_proto	*tail;
134 };
135 
136 struct node_port {
137 	u_int16_t		 port[2];
138 	u_int8_t		 op;
139 	struct node_port	*next;
140 	struct node_port	*tail;
141 };
142 
143 struct node_uid {
144 	uid_t			 uid[2];
145 	u_int8_t		 op;
146 	struct node_uid		*next;
147 	struct node_uid		*tail;
148 };
149 
150 struct node_gid {
151 	gid_t			 gid[2];
152 	u_int8_t		 op;
153 	struct node_gid		*next;
154 	struct node_gid		*tail;
155 };
156 
157 struct node_icmp {
158 	u_int8_t		 code;
159 	u_int8_t		 type;
160 	u_int8_t		 proto;
161 	struct node_icmp	*next;
162 	struct node_icmp	*tail;
163 };
164 
165 enum	{ PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
166 	    PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
167 	    PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
168 	    PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
169 	    PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, };
170 
171 enum	{ PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
172 
173 struct node_state_opt {
174 	int			 type;
175 	union {
176 		u_int32_t	 max_states;
177 		u_int32_t	 max_src_states;
178 		u_int32_t	 max_src_conn;
179 		struct {
180 			u_int32_t	limit;
181 			u_int32_t	seconds;
182 		}		 max_src_conn_rate;
183 		struct {
184 			u_int8_t	flush;
185 			char		tblname[PF_TABLE_NAME_SIZE];
186 		}		 overload;
187 		u_int32_t	 max_src_nodes;
188 		u_int8_t	 src_track;
189 		u_int32_t	 statelock;
190 		struct {
191 			int		number;
192 			u_int32_t	seconds;
193 		}		 timeout;
194 	}			 data;
195 	struct node_state_opt	*next;
196 	struct node_state_opt	*tail;
197 };
198 
199 struct peer {
200 	struct node_host	*host;
201 	struct node_port	*port;
202 };
203 
204 static struct node_queue {
205 	char			 queue[PF_QNAME_SIZE];
206 	char			 parent[PF_QNAME_SIZE];
207 	char			 ifname[IFNAMSIZ];
208 	int			 scheduler;
209 	struct node_queue	*next;
210 	struct node_queue	*tail;
211 }	*queues = NULL;
212 
213 struct node_qassign {
214 	char		*qname;
215 	char		*pqname;
216 };
217 
218 static struct filter_opts {
219 	int			 marker;
220 #define FOM_FLAGS	0x01
221 #define FOM_ICMP	0x02
222 #define FOM_TOS		0x04
223 #define FOM_KEEP	0x08
224 #define FOM_SRCTRACK	0x10
225 #define FOM_SETPRIO	0x0400
226 #define FOM_PRIO	0x2000
227 	struct node_uid		*uid;
228 	struct node_gid		*gid;
229 	struct {
230 		u_int8_t	 b1;
231 		u_int8_t	 b2;
232 		u_int16_t	 w;
233 		u_int16_t	 w2;
234 	} flags;
235 	struct node_icmp	*icmpspec;
236 	u_int32_t		 tos;
237 	u_int32_t		 prob;
238 	struct {
239 		int			 action;
240 		struct node_state_opt	*options;
241 	} keep;
242 	int			 fragment;
243 	int			 allowopts;
244 	char			*label;
245 	struct node_qassign	 queues;
246 	char			*tag;
247 	char			*match_tag;
248 	u_int8_t		 match_tag_not;
249 	u_int			 rtableid;
250 	u_int8_t		 prio;
251 	u_int8_t		 set_prio[2];
252 	struct {
253 		struct node_host	*addr;
254 		u_int16_t		port;
255 	}			 divert;
256 } filter_opts;
257 
258 static struct antispoof_opts {
259 	char			*label;
260 	u_int			 rtableid;
261 } antispoof_opts;
262 
263 static struct scrub_opts {
264 	int			 marker;
265 #define SOM_MINTTL	0x01
266 #define SOM_MAXMSS	0x02
267 #define SOM_FRAGCACHE	0x04
268 #define SOM_SETTOS	0x08
269 	int			 nodf;
270 	int			 minttl;
271 	int			 maxmss;
272 	int			 settos;
273 	int			 fragcache;
274 	int			 randomid;
275 	int			 reassemble_tcp;
276 	char			*match_tag;
277 	u_int8_t		 match_tag_not;
278 	u_int			 rtableid;
279 } scrub_opts;
280 
281 static struct queue_opts {
282 	int			marker;
283 #define QOM_BWSPEC	0x01
284 #define QOM_SCHEDULER	0x02
285 #define QOM_PRIORITY	0x04
286 #define QOM_TBRSIZE	0x08
287 #define QOM_QLIMIT	0x10
288 	struct node_queue_bw	queue_bwspec;
289 	struct node_queue_opt	scheduler;
290 	int			priority;
291 	unsigned int		tbrsize;
292 	int			qlimit;
293 } queue_opts;
294 
295 static struct table_opts {
296 	int			flags;
297 	int			init_addr;
298 	struct node_tinithead	init_nodes;
299 } table_opts;
300 
301 static struct pool_opts {
302 	int			 marker;
303 #define POM_TYPE		0x01
304 #define POM_STICKYADDRESS	0x02
305 	u_int8_t		 opts;
306 	int			 type;
307 	int			 staticport;
308 	struct pf_poolhashkey	*key;
309 
310 } pool_opts;
311 
312 static struct codel_opts	 codel_opts;
313 static struct node_hfsc_opts	 hfsc_opts;
314 static struct node_fairq_opts	 fairq_opts;
315 static struct node_state_opt	*keep_state_defaults = NULL;
316 
317 int		 disallow_table(struct node_host *, const char *);
318 int		 disallow_urpf_failed(struct node_host *, const char *);
319 int		 disallow_alias(struct node_host *, const char *);
320 int		 rule_consistent(struct pf_rule *, int);
321 int		 filter_consistent(struct pf_rule *, int);
322 int		 nat_consistent(struct pf_rule *);
323 int		 rdr_consistent(struct pf_rule *);
324 int		 process_tabledef(char *, struct table_opts *);
325 void		 expand_label_str(char *, size_t, const char *, const char *);
326 void		 expand_label_if(const char *, char *, size_t, const char *);
327 void		 expand_label_addr(const char *, char *, size_t, u_int8_t,
328 		    struct node_host *);
329 void		 expand_label_port(const char *, char *, size_t,
330 		    struct node_port *);
331 void		 expand_label_proto(const char *, char *, size_t, u_int8_t);
332 void		 expand_label_nr(const char *, char *, size_t);
333 void		 expand_label(char *, size_t, const char *, u_int8_t,
334 		    struct node_host *, struct node_port *, struct node_host *,
335 		    struct node_port *, u_int8_t);
336 void		 expand_rule(struct pf_rule *, struct node_if *,
337 		    struct node_host *, struct node_proto *, struct node_os *,
338 		    struct node_host *, struct node_port *, struct node_host *,
339 		    struct node_port *, struct node_uid *, struct node_gid *,
340 		    struct node_icmp *, const char *);
341 int		 expand_altq(struct pf_altq *, struct node_if *,
342 		    struct node_queue *, struct node_queue_bw bwspec,
343 		    struct node_queue_opt *);
344 int		 expand_queue(struct pf_altq *, struct node_if *,
345 		    struct node_queue *, struct node_queue_bw,
346 		    struct node_queue_opt *);
347 int		 expand_skip_interface(struct node_if *);
348 
349 int	 check_rulestate(int);
350 int	 getservice(char *);
351 int	 rule_label(struct pf_rule *, char *);
352 int	 rt_tableid_max(void);
353 
354 void	 mv_rules(struct pf_ruleset *, struct pf_ruleset *);
355 void	 decide_address_family(struct node_host *, sa_family_t *);
356 void	 remove_invalid_hosts(struct node_host **, sa_family_t *);
357 int	 invalid_redirect(struct node_host *, sa_family_t);
358 u_int16_t parseicmpspec(char *, sa_family_t);
359 int	 kw_casecmp(const void *, const void *);
360 int	 map_tos(char *string, int *);
361 
362 static TAILQ_HEAD(loadanchorshead, loadanchors)
363     loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
364 
365 struct loadanchors {
366 	TAILQ_ENTRY(loadanchors)	 entries;
367 	char				*anchorname;
368 	char				*filename;
369 };
370 
371 typedef struct {
372 	union {
373 		int64_t			 number;
374 		double			 probability;
375 		int			 i;
376 		char			*string;
377 		u_int			 rtableid;
378 		struct {
379 			u_int8_t	 b1;
380 			u_int8_t	 b2;
381 			u_int16_t	 w;
382 			u_int16_t	 w2;
383 		}			 b;
384 		struct range {
385 			int		 a;
386 			int		 b;
387 			int		 t;
388 		}			 range;
389 		struct node_if		*interface;
390 		struct node_proto	*proto;
391 		struct node_icmp	*icmp;
392 		struct node_host	*host;
393 		struct node_os		*os;
394 		struct node_port	*port;
395 		struct node_uid		*uid;
396 		struct node_gid		*gid;
397 		struct node_state_opt	*state_opt;
398 		struct peer		 peer;
399 		struct {
400 			struct peer	 src, dst;
401 			struct node_os	*src_os;
402 		}			 fromto;
403 		struct {
404 			struct node_host	*host;
405 			u_int8_t		 rt;
406 			u_int8_t		 pool_opts;
407 			sa_family_t		 af;
408 			struct pf_poolhashkey	*key;
409 		}			 route;
410 		struct redirection {
411 			struct node_host	*host;
412 			struct range		 rport;
413 		}			*redirection;
414 		struct {
415 			int			 action;
416 			struct node_state_opt	*options;
417 		}			 keep_state;
418 		struct {
419 			u_int8_t	 log;
420 			u_int8_t	 logif;
421 			u_int8_t	 quick;
422 		}			 logquick;
423 		struct {
424 			int		 neg;
425 			char		*name;
426 		}			 tagged;
427 		struct pf_poolhashkey	*hashkey;
428 		struct node_queue	*queue;
429 		struct node_queue_opt	 queue_options;
430 		struct node_queue_bw	 queue_bwspec;
431 		struct node_qassign	 qassign;
432 		struct filter_opts	 filter_opts;
433 		struct antispoof_opts	 antispoof_opts;
434 		struct queue_opts	 queue_opts;
435 		struct scrub_opts	 scrub_opts;
436 		struct table_opts	 table_opts;
437 		struct pool_opts	 pool_opts;
438 		struct node_hfsc_opts	 hfsc_opts;
439 		struct node_fairq_opts	 fairq_opts;
440 		struct codel_opts	 codel_opts;
441 	} v;
442 	int lineno;
443 } YYSTYPE;
444 
445 #define PPORT_RANGE	1
446 #define PPORT_STAR	2
447 int	parseport(char *, struct range *r, int);
448 
449 #define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
450 	(!((addr).iflags & PFI_AFLAG_NOALIAS) ||		 \
451 	!isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
452 
453 %}
454 
455 %token	PASS BLOCK SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
456 %token	RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
457 %token	ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
458 %token	MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
459 %token	NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
460 %token	REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
461 %token	SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY
462 %token	RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
463 %token	ANTISPOOF FOR INCLUDE
464 %token	BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY
465 %token	ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME
466 %token	UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL
467 %token	LOAD RULESET_OPTIMIZATION PRIO
468 %token	STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
469 %token	MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY
470 %token	TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS
471 %token	DIVERTTO DIVERTREPLY
472 %token	<v.string>		STRING
473 %token	<v.number>		NUMBER
474 %token	<v.i>			PORTBINARY
475 %type	<v.interface>		interface if_list if_item_not if_item
476 %type	<v.number>		number icmptype icmp6type uid gid
477 %type	<v.number>		tos not yesno
478 %type	<v.probability>		probability
479 %type	<v.i>			no dir af fragcache optimizer
480 %type	<v.i>			sourcetrack flush unaryop statelock
481 %type	<v.b>			action nataction natpasslog scrubaction
482 %type	<v.b>			flags flag blockspec prio
483 %type	<v.range>		portplain portstar portrange
484 %type	<v.hashkey>		hashkey
485 %type	<v.proto>		proto proto_list proto_item
486 %type	<v.number>		protoval
487 %type	<v.icmp>		icmpspec
488 %type	<v.icmp>		icmp_list icmp_item
489 %type	<v.icmp>		icmp6_list icmp6_item
490 %type	<v.number>		reticmpspec reticmp6spec
491 %type	<v.fromto>		fromto
492 %type	<v.peer>		ipportspec from to
493 %type	<v.host>		ipspec toipspec xhost host dynaddr host_list
494 %type	<v.host>		redir_host_list redirspec
495 %type	<v.host>		route_host route_host_list routespec
496 %type	<v.os>			os xos os_list
497 %type	<v.port>		portspec port_list port_item
498 %type	<v.uid>			uids uid_list uid_item
499 %type	<v.gid>			gids gid_list gid_item
500 %type	<v.route>		route
501 %type	<v.redirection>		redirection redirpool
502 %type	<v.string>		label stringall tag anchorname
503 %type	<v.string>		string varstring numberstring
504 %type	<v.keep_state>		keep
505 %type	<v.state_opt>		state_opt_spec state_opt_list state_opt_item
506 %type	<v.logquick>		logquick quick log logopts logopt
507 %type	<v.interface>		antispoof_ifspc antispoof_iflst antispoof_if
508 %type	<v.qassign>		qname
509 %type	<v.queue>		qassign qassign_list qassign_item
510 %type	<v.queue_options>	scheduler
511 %type	<v.number>		cbqflags_list cbqflags_item
512 %type	<v.number>		priqflags_list priqflags_item
513 %type	<v.hfsc_opts>		hfscopts_list hfscopts_item hfsc_opts
514 %type	<v.fairq_opts>		fairqopts_list fairqopts_item fairq_opts
515 %type	<v.codel_opts>		codelopts_list codelopts_item codel_opts
516 %type	<v.queue_bwspec>	bandwidth
517 %type	<v.filter_opts>		filter_opts filter_opt filter_opts_l
518 %type	<v.filter_opts>		filter_sets filter_set filter_sets_l
519 %type	<v.antispoof_opts>	antispoof_opts antispoof_opt antispoof_opts_l
520 %type	<v.queue_opts>		queue_opts queue_opt queue_opts_l
521 %type	<v.scrub_opts>		scrub_opts scrub_opt scrub_opts_l
522 %type	<v.table_opts>		table_opts table_opt table_opts_l
523 %type	<v.pool_opts>		pool_opts pool_opt pool_opts_l
524 %type	<v.tagged>		tagged
525 %type	<v.rtableid>		rtable
526 %%
527 
528 ruleset		: /* empty */
529 		| ruleset include '\n'
530 		| ruleset '\n'
531 		| ruleset option '\n'
532 		| ruleset scrubrule '\n'
533 		| ruleset natrule '\n'
534 		| ruleset binatrule '\n'
535 		| ruleset pfrule '\n'
536 		| ruleset anchorrule '\n'
537 		| ruleset loadrule '\n'
538 		| ruleset altqif '\n'
539 		| ruleset queuespec '\n'
540 		| ruleset varset '\n'
541 		| ruleset antispoof '\n'
542 		| ruleset tabledef '\n'
543 		| '{' fakeanchor '}' '\n';
544 		| ruleset error '\n'		{ file->errors++; }
545 		;
546 
547 include		: INCLUDE STRING		{
548 			struct file	*nfile;
549 
550 			if ((nfile = pushfile($2, 0)) == NULL) {
551 				yyerror("failed to include file %s", $2);
552 				free($2);
553 				YYERROR;
554 			}
555 			free($2);
556 
557 			file = nfile;
558 			lungetc('\n');
559 		}
560 		;
561 
562 /*
563  * apply to previouslys specified rule: must be careful to note
564  * what that is: pf or nat or binat or rdr
565  */
566 fakeanchor	: fakeanchor '\n'
567 		| fakeanchor anchorrule '\n'
568 		| fakeanchor binatrule '\n'
569 		| fakeanchor natrule '\n'
570 		| fakeanchor pfrule '\n'
571 		| fakeanchor error '\n'
572 		;
573 
574 optimizer	: string	{
575 			if (!strcmp($1, "none"))
576 				$$ = 0;
577 			else if (!strcmp($1, "basic"))
578 				$$ = PF_OPTIMIZE_BASIC;
579 			else if (!strcmp($1, "profile"))
580 				$$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
581 			else {
582 				yyerror("unknown ruleset-optimization %s", $1);
583 				YYERROR;
584 			}
585 		}
586 		;
587 
588 option		: SET OPTIMIZATION STRING		{
589 			if (check_rulestate(PFCTL_STATE_OPTION)) {
590 				free($3);
591 				YYERROR;
592 			}
593 			if (pfctl_set_optimization(pf, $3) != 0) {
594 				yyerror("unknown optimization %s", $3);
595 				free($3);
596 				YYERROR;
597 			}
598 			free($3);
599 		}
600 		| SET RULESET_OPTIMIZATION optimizer {
601 			if (!(pf->opts & PF_OPT_OPTIMIZE)) {
602 				pf->opts |= PF_OPT_OPTIMIZE;
603 				pf->optimize = $3;
604 			}
605 		}
606 		| SET TIMEOUT timeout_spec
607 		| SET TIMEOUT '{' optnl timeout_list '}'
608 		| SET LIMIT limit_spec
609 		| SET LIMIT '{' optnl limit_list '}'
610 		| SET LOGINTERFACE stringall		{
611 			if (check_rulestate(PFCTL_STATE_OPTION)) {
612 				free($3);
613 				YYERROR;
614 			}
615 			if (pfctl_set_logif(pf, $3) != 0) {
616 				yyerror("error setting loginterface %s", $3);
617 				free($3);
618 				YYERROR;
619 			}
620 			free($3);
621 		}
622 		| SET HOSTID number {
623 			if ($3 == 0 || $3 > UINT_MAX) {
624 				yyerror("hostid must be non-zero");
625 				YYERROR;
626 			}
627 			if (pfctl_set_hostid(pf, $3) != 0) {
628 				yyerror("error setting hostid %08x", $3);
629 				YYERROR;
630 			}
631 		}
632 		| SET BLOCKPOLICY DROP	{
633 			if (pf->opts & PF_OPT_VERBOSE)
634 				printf("set block-policy drop\n");
635 			if (check_rulestate(PFCTL_STATE_OPTION))
636 				YYERROR;
637 			blockpolicy = PFRULE_DROP;
638 		}
639 		| SET BLOCKPOLICY RETURN {
640 			if (pf->opts & PF_OPT_VERBOSE)
641 				printf("set block-policy return\n");
642 			if (check_rulestate(PFCTL_STATE_OPTION))
643 				YYERROR;
644 			blockpolicy = PFRULE_RETURN;
645 		}
646 		| SET FAILPOLICY DROP	{
647 			if (pf->opts & PF_OPT_VERBOSE)
648 				printf("set fail-policy drop\n");
649 			if (check_rulestate(PFCTL_STATE_OPTION))
650 				YYERROR;
651 			failpolicy = PFRULE_DROP;
652 		}
653 		| SET FAILPOLICY RETURN {
654 			if (pf->opts & PF_OPT_VERBOSE)
655 				printf("set fail-policy return\n");
656 			if (check_rulestate(PFCTL_STATE_OPTION))
657 				YYERROR;
658 			failpolicy = PFRULE_RETURN;
659 		}
660 		| SET REQUIREORDER yesno {
661 			if (pf->opts & PF_OPT_VERBOSE)
662 				printf("set require-order %s\n",
663 				    $3 == 1 ? "yes" : "no");
664 			require_order = $3;
665 		}
666 		| SET FINGERPRINTS STRING {
667 			if (pf->opts & PF_OPT_VERBOSE)
668 				printf("set fingerprints \"%s\"\n", $3);
669 			if (check_rulestate(PFCTL_STATE_OPTION)) {
670 				free($3);
671 				YYERROR;
672 			}
673 			if (!pf->anchor->name[0]) {
674 				if (pfctl_file_fingerprints(pf->dev,
675 				    pf->opts, $3)) {
676 					yyerror("error loading "
677 					    "fingerprints %s", $3);
678 					free($3);
679 					YYERROR;
680 				}
681 			}
682 			free($3);
683 		}
684 		| SET STATEPOLICY statelock {
685 			if (pf->opts & PF_OPT_VERBOSE)
686 				switch ($3) {
687 				case 0:
688 					printf("set state-policy floating\n");
689 					break;
690 				case PFRULE_IFBOUND:
691 					printf("set state-policy if-bound\n");
692 					break;
693 				}
694 			default_statelock = $3;
695 		}
696 		| SET DEBUG STRING {
697 			if (check_rulestate(PFCTL_STATE_OPTION)) {
698 				free($3);
699 				YYERROR;
700 			}
701 			if (pfctl_set_debug(pf, $3) != 0) {
702 				yyerror("error setting debuglevel %s", $3);
703 				free($3);
704 				YYERROR;
705 			}
706 			free($3);
707 		}
708 		| SET SKIP interface {
709 			if (expand_skip_interface($3) != 0) {
710 				yyerror("error setting skip interface(s)");
711 				YYERROR;
712 			}
713 		}
714 		| SET STATEDEFAULTS state_opt_list {
715 			if (keep_state_defaults != NULL) {
716 				yyerror("cannot redefine state-defaults");
717 				YYERROR;
718 			}
719 			keep_state_defaults = $3;
720 		}
721 		;
722 
723 stringall	: STRING	{ $$ = $1; }
724 		| ALL		{
725 			if (($$ = strdup("all")) == NULL) {
726 				err(1, "stringall: strdup");
727 			}
728 		}
729 		;
730 
731 string		: STRING string				{
732 			if (asprintf(&$$, "%s %s", $1, $2) == -1)
733 				err(1, "string: asprintf");
734 			free($1);
735 			free($2);
736 		}
737 		| STRING
738 		;
739 
740 varstring	: numberstring varstring 		{
741 			if (asprintf(&$$, "%s %s", $1, $2) == -1)
742 				err(1, "string: asprintf");
743 			free($1);
744 			free($2);
745 		}
746 		| numberstring
747 		;
748 
749 numberstring	: NUMBER				{
750 			char	*s;
751 			if (asprintf(&s, "%lld", (long long)$1) == -1) {
752 				yyerror("string: asprintf");
753 				YYERROR;
754 			}
755 			$$ = s;
756 		}
757 		| STRING
758 		;
759 
760 varset		: STRING '=' varstring	{
761 			if (pf->opts & PF_OPT_VERBOSE)
762 				printf("%s = \"%s\"\n", $1, $3);
763 			if (symset($1, $3, 0) == -1)
764 				err(1, "cannot store variable %s", $1);
765 			free($1);
766 			free($3);
767 		}
768 		;
769 
770 anchorname	: STRING			{ $$ = $1; }
771 		| /* empty */			{ $$ = NULL; }
772 		;
773 
774 pfa_anchorlist	: /* empty */
775 		| pfa_anchorlist '\n'
776 		| pfa_anchorlist pfrule '\n'
777 		| pfa_anchorlist anchorrule '\n'
778 		;
779 
780 pfa_anchor	: '{'
781 		{
782 			char ta[PF_ANCHOR_NAME_SIZE];
783 			struct pf_ruleset *rs;
784 
785 			/* steping into a brace anchor */
786 			pf->asd++;
787 			pf->bn++;
788 			pf->brace = 1;
789 
790 			/* create a holding ruleset in the root */
791 			snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
792 			rs = pf_find_or_create_ruleset(ta);
793 			if (rs == NULL)
794 				err(1, "pfa_anchor: pf_find_or_create_ruleset");
795 			pf->astack[pf->asd] = rs->anchor;
796 			pf->anchor = rs->anchor;
797 		} '\n' pfa_anchorlist '}'
798 		{
799 			pf->alast = pf->anchor;
800 			pf->asd--;
801 			pf->anchor = pf->astack[pf->asd];
802 		}
803 		| /* empty */
804 		;
805 
806 anchorrule	: ANCHOR anchorname dir quick interface af proto fromto
807 		    filter_opts pfa_anchor
808 		{
809 			struct pf_rule	r;
810 			struct node_proto	*proto;
811 
812 			if (check_rulestate(PFCTL_STATE_FILTER)) {
813 				if ($2)
814 					free($2);
815 				YYERROR;
816 			}
817 
818 			if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
819 				free($2);
820 				yyerror("anchor names beginning with '_' "
821 				    "are reserved for internal use");
822 				YYERROR;
823 			}
824 
825 			memset(&r, 0, sizeof(r));
826 			if (pf->astack[pf->asd + 1]) {
827 				/* move inline rules into relative location */
828 				pf_anchor_setup(&r,
829 				    &pf->astack[pf->asd]->ruleset,
830 				    $2 ? $2 : pf->alast->name);
831 
832 				if (r.anchor == NULL)
833 					err(1, "anchorrule: unable to "
834 					    "create ruleset");
835 
836 				if (pf->alast != r.anchor) {
837 					if (r.anchor->match) {
838 						yyerror("inline anchor '%s' "
839 						    "already exists",
840 						    r.anchor->name);
841 						YYERROR;
842 					}
843 					mv_rules(&pf->alast->ruleset,
844 					    &r.anchor->ruleset);
845 				}
846 				pf_remove_if_empty_ruleset(&pf->alast->ruleset);
847 				pf->alast = r.anchor;
848 			} else {
849 				if (!$2) {
850 					yyerror("anchors without explicit "
851 					    "rules must specify a name");
852 					YYERROR;
853 				}
854 			}
855 			r.direction = $3;
856 			r.quick = $4.quick;
857 			r.af = $6;
858 			r.prob = $9.prob;
859 			r.rtableid = $9.rtableid;
860 
861 			if ($9.tag)
862 				if (strlcpy(r.tagname, $9.tag,
863 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
864 					yyerror("tag too long, max %u chars",
865 					    PF_TAG_NAME_SIZE - 1);
866 					YYERROR;
867 				}
868 			if ($9.match_tag)
869 				if (strlcpy(r.match_tagname, $9.match_tag,
870 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
871 					yyerror("tag too long, max %u chars",
872 					    PF_TAG_NAME_SIZE - 1);
873 					YYERROR;
874 				}
875 			r.match_tag_not = $9.match_tag_not;
876 			if (rule_label(&r, $9.label))
877 				YYERROR;
878 			free($9.label);
879 			r.flags = $9.flags.b1;
880 			r.flagset = $9.flags.b2;
881 			if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
882 				yyerror("flags always false");
883 				YYERROR;
884 			}
885 			if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
886 				for (proto = $7; proto != NULL &&
887 				    proto->proto != IPPROTO_TCP;
888 				    proto = proto->next)
889 					;	/* nothing */
890 				if (proto == NULL && $7 != NULL) {
891 					if ($9.flags.b1 || $9.flags.b2)
892 						yyerror(
893 						    "flags only apply to tcp");
894 					if ($8.src_os)
895 						yyerror(
896 						    "OS fingerprinting only "
897 						    "applies to tcp");
898 					YYERROR;
899 				}
900 			}
901 
902 			r.tos = $9.tos;
903 
904 			if ($9.keep.action) {
905 				yyerror("cannot specify state handling "
906 				    "on anchors");
907 				YYERROR;
908 			}
909 
910 			if ($9.match_tag)
911 				if (strlcpy(r.match_tagname, $9.match_tag,
912 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
913 					yyerror("tag too long, max %u chars",
914 					    PF_TAG_NAME_SIZE - 1);
915 					YYERROR;
916 				}
917 			r.match_tag_not = $9.match_tag_not;
918 			if ($9.marker & FOM_PRIO) {
919 				if ($9.prio == 0)
920 					r.prio = PF_PRIO_ZERO;
921 				else
922 					r.prio = $9.prio;
923 			}
924 			if ($9.marker & FOM_SETPRIO) {
925 				r.set_prio[0] = $9.set_prio[0];
926 				r.set_prio[1] = $9.set_prio[1];
927 				r.scrub_flags |= PFSTATE_SETPRIO;
928 			}
929 
930 			decide_address_family($8.src.host, &r.af);
931 			decide_address_family($8.dst.host, &r.af);
932 
933 			expand_rule(&r, $5, NULL, $7, $8.src_os,
934 			    $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
935 			    $9.uid, $9.gid, $9.icmpspec,
936 			    pf->astack[pf->asd + 1] ? pf->alast->name : $2);
937 			free($2);
938 			pf->astack[pf->asd + 1] = NULL;
939 		}
940 		| NATANCHOR string interface af proto fromto rtable {
941 			struct pf_rule	r;
942 
943 			if (check_rulestate(PFCTL_STATE_NAT)) {
944 				free($2);
945 				YYERROR;
946 			}
947 
948 			memset(&r, 0, sizeof(r));
949 			r.action = PF_NAT;
950 			r.af = $4;
951 			r.rtableid = $7;
952 
953 			decide_address_family($6.src.host, &r.af);
954 			decide_address_family($6.dst.host, &r.af);
955 
956 			expand_rule(&r, $3, NULL, $5, $6.src_os,
957 			    $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
958 			    0, 0, 0, $2);
959 			free($2);
960 		}
961 		| RDRANCHOR string interface af proto fromto rtable {
962 			struct pf_rule	r;
963 
964 			if (check_rulestate(PFCTL_STATE_NAT)) {
965 				free($2);
966 				YYERROR;
967 			}
968 
969 			memset(&r, 0, sizeof(r));
970 			r.action = PF_RDR;
971 			r.af = $4;
972 			r.rtableid = $7;
973 
974 			decide_address_family($6.src.host, &r.af);
975 			decide_address_family($6.dst.host, &r.af);
976 
977 			if ($6.src.port != NULL) {
978 				yyerror("source port parameter not supported"
979 				    " in rdr-anchor");
980 				YYERROR;
981 			}
982 			if ($6.dst.port != NULL) {
983 				if ($6.dst.port->next != NULL) {
984 					yyerror("destination port list "
985 					    "expansion not supported in "
986 					    "rdr-anchor");
987 					YYERROR;
988 				} else if ($6.dst.port->op != PF_OP_EQ) {
989 					yyerror("destination port operators"
990 					    " not supported in rdr-anchor");
991 					YYERROR;
992 				}
993 				r.dst.port[0] = $6.dst.port->port[0];
994 				r.dst.port[1] = $6.dst.port->port[1];
995 				r.dst.port_op = $6.dst.port->op;
996 			}
997 
998 			expand_rule(&r, $3, NULL, $5, $6.src_os,
999 			    $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
1000 			    0, 0, 0, $2);
1001 			free($2);
1002 		}
1003 		| BINATANCHOR string interface af proto fromto rtable {
1004 			struct pf_rule	r;
1005 
1006 			if (check_rulestate(PFCTL_STATE_NAT)) {
1007 				free($2);
1008 				YYERROR;
1009 			}
1010 
1011 			memset(&r, 0, sizeof(r));
1012 			r.action = PF_BINAT;
1013 			r.af = $4;
1014 			r.rtableid = $7;
1015 			if ($5 != NULL) {
1016 				if ($5->next != NULL) {
1017 					yyerror("proto list expansion"
1018 					    " not supported in binat-anchor");
1019 					YYERROR;
1020 				}
1021 				r.proto = $5->proto;
1022 				free($5);
1023 			}
1024 
1025 			if ($6.src.host != NULL || $6.src.port != NULL ||
1026 			    $6.dst.host != NULL || $6.dst.port != NULL) {
1027 				yyerror("fromto parameter not supported"
1028 				    " in binat-anchor");
1029 				YYERROR;
1030 			}
1031 
1032 			decide_address_family($6.src.host, &r.af);
1033 			decide_address_family($6.dst.host, &r.af);
1034 
1035 			pfctl_add_rule(pf, &r, $2);
1036 			free($2);
1037 		}
1038 		;
1039 
1040 loadrule	: LOAD ANCHOR string FROM string	{
1041 			struct loadanchors	*loadanchor;
1042 
1043 			if (strlen(pf->anchor->name) + 1 +
1044 			    strlen($3) >= MAXPATHLEN) {
1045 				yyerror("anchorname %s too long, max %u\n",
1046 				    $3, MAXPATHLEN - 1);
1047 				free($3);
1048 				YYERROR;
1049 			}
1050 			loadanchor = calloc(1, sizeof(struct loadanchors));
1051 			if (loadanchor == NULL)
1052 				err(1, "loadrule: calloc");
1053 			if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
1054 			    NULL)
1055 				err(1, "loadrule: malloc");
1056 			if (pf->anchor->name[0])
1057 				snprintf(loadanchor->anchorname, MAXPATHLEN,
1058 				    "%s/%s", pf->anchor->name, $3);
1059 			else
1060 				strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
1061 			if ((loadanchor->filename = strdup($5)) == NULL)
1062 				err(1, "loadrule: strdup");
1063 
1064 			TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
1065 			    entries);
1066 
1067 			free($3);
1068 			free($5);
1069 		};
1070 
1071 scrubaction	: no SCRUB {
1072 			$$.b2 = $$.w = 0;
1073 			if ($1)
1074 				$$.b1 = PF_NOSCRUB;
1075 			else
1076 				$$.b1 = PF_SCRUB;
1077 		}
1078 		;
1079 
1080 scrubrule	: scrubaction dir logquick interface af proto fromto scrub_opts
1081 		{
1082 			struct pf_rule	r;
1083 
1084 			if (check_rulestate(PFCTL_STATE_SCRUB))
1085 				YYERROR;
1086 
1087 			memset(&r, 0, sizeof(r));
1088 
1089 			r.action = $1.b1;
1090 			r.direction = $2;
1091 
1092 			r.log = $3.log;
1093 			r.logif = $3.logif;
1094 			if ($3.quick) {
1095 				yyerror("scrub rules do not support 'quick'");
1096 				YYERROR;
1097 			}
1098 
1099 			r.af = $5;
1100 			if ($8.nodf)
1101 				r.rule_flag |= PFRULE_NODF;
1102 			if ($8.randomid)
1103 				r.rule_flag |= PFRULE_RANDOMID;
1104 			if ($8.reassemble_tcp) {
1105 				if (r.direction != PF_INOUT) {
1106 					yyerror("reassemble tcp rules can not "
1107 					    "specify direction");
1108 					YYERROR;
1109 				}
1110 				r.rule_flag |= PFRULE_REASSEMBLE_TCP;
1111 			}
1112 			if ($8.minttl)
1113 				r.min_ttl = $8.minttl;
1114 			if ($8.maxmss)
1115 				r.max_mss = $8.maxmss;
1116 			if ($8.marker & SOM_SETTOS) {
1117 				r.rule_flag |= PFRULE_SET_TOS;
1118 				r.set_tos = $8.settos;
1119 			}
1120 			if ($8.fragcache)
1121 				r.rule_flag |= $8.fragcache;
1122 			if ($8.match_tag)
1123 				if (strlcpy(r.match_tagname, $8.match_tag,
1124 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1125 					yyerror("tag too long, max %u chars",
1126 					    PF_TAG_NAME_SIZE - 1);
1127 					YYERROR;
1128 				}
1129 			r.match_tag_not = $8.match_tag_not;
1130 			r.rtableid = $8.rtableid;
1131 
1132 			expand_rule(&r, $4, NULL, $6, $7.src_os,
1133 			    $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
1134 			    NULL, NULL, NULL, "");
1135 		}
1136 		;
1137 
1138 scrub_opts	:	{
1139 				bzero(&scrub_opts, sizeof scrub_opts);
1140 				scrub_opts.rtableid = -1;
1141 			}
1142 		    scrub_opts_l
1143 			{ $$ = scrub_opts; }
1144 		| /* empty */ {
1145 			bzero(&scrub_opts, sizeof scrub_opts);
1146 			scrub_opts.rtableid = -1;
1147 			$$ = scrub_opts;
1148 		}
1149 		;
1150 
1151 scrub_opts_l	: scrub_opts_l scrub_opt
1152 		| scrub_opt
1153 		;
1154 
1155 scrub_opt	: NODF	{
1156 			if (scrub_opts.nodf) {
1157 				yyerror("no-df cannot be respecified");
1158 				YYERROR;
1159 			}
1160 			scrub_opts.nodf = 1;
1161 		}
1162 		| MINTTL NUMBER {
1163 			if (scrub_opts.marker & SOM_MINTTL) {
1164 				yyerror("min-ttl cannot be respecified");
1165 				YYERROR;
1166 			}
1167 			if ($2 < 0 || $2 > 255) {
1168 				yyerror("illegal min-ttl value %d", $2);
1169 				YYERROR;
1170 			}
1171 			scrub_opts.marker |= SOM_MINTTL;
1172 			scrub_opts.minttl = $2;
1173 		}
1174 		| MAXMSS NUMBER {
1175 			if (scrub_opts.marker & SOM_MAXMSS) {
1176 				yyerror("max-mss cannot be respecified");
1177 				YYERROR;
1178 			}
1179 			if ($2 < 0 || $2 > 65535) {
1180 				yyerror("illegal max-mss value %d", $2);
1181 				YYERROR;
1182 			}
1183 			scrub_opts.marker |= SOM_MAXMSS;
1184 			scrub_opts.maxmss = $2;
1185 		}
1186 		| SETTOS tos {
1187 			if (scrub_opts.marker & SOM_SETTOS) {
1188 				yyerror("set-tos cannot be respecified");
1189 				YYERROR;
1190 			}
1191 			scrub_opts.marker |= SOM_SETTOS;
1192 			scrub_opts.settos = $2;
1193 		}
1194 		| fragcache {
1195 			if (scrub_opts.marker & SOM_FRAGCACHE) {
1196 				yyerror("fragcache cannot be respecified");
1197 				YYERROR;
1198 			}
1199 			scrub_opts.marker |= SOM_FRAGCACHE;
1200 			scrub_opts.fragcache = $1;
1201 		}
1202 		| REASSEMBLE STRING {
1203 			if (strcasecmp($2, "tcp") != 0) {
1204 				yyerror("scrub reassemble supports only tcp, "
1205 				    "not '%s'", $2);
1206 				free($2);
1207 				YYERROR;
1208 			}
1209 			free($2);
1210 			if (scrub_opts.reassemble_tcp) {
1211 				yyerror("reassemble tcp cannot be respecified");
1212 				YYERROR;
1213 			}
1214 			scrub_opts.reassemble_tcp = 1;
1215 		}
1216 		| RANDOMID {
1217 			if (scrub_opts.randomid) {
1218 				yyerror("random-id cannot be respecified");
1219 				YYERROR;
1220 			}
1221 			scrub_opts.randomid = 1;
1222 		}
1223 		| RTABLE NUMBER				{
1224 			if ($2 < 0 || $2 > rt_tableid_max()) {
1225 				yyerror("invalid rtable id");
1226 				YYERROR;
1227 			}
1228 			scrub_opts.rtableid = $2;
1229 		}
1230 		| not TAGGED string			{
1231 			scrub_opts.match_tag = $3;
1232 			scrub_opts.match_tag_not = $1;
1233 		}
1234 		;
1235 
1236 fragcache	: FRAGMENT REASSEMBLE	{ $$ = 0; /* default */ }
1237 		| FRAGMENT FRAGCROP	{ $$ = 0; }
1238 		| FRAGMENT FRAGDROP	{ $$ = 0; }
1239 		;
1240 
1241 antispoof	: ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1242 			struct pf_rule		 r;
1243 			struct node_host	*h = NULL, *hh;
1244 			struct node_if		*i, *j;
1245 
1246 			if (check_rulestate(PFCTL_STATE_FILTER))
1247 				YYERROR;
1248 
1249 			for (i = $3; i; i = i->next) {
1250 				bzero(&r, sizeof(r));
1251 
1252 				r.action = PF_DROP;
1253 				r.direction = PF_IN;
1254 				r.log = $2.log;
1255 				r.logif = $2.logif;
1256 				r.quick = $2.quick;
1257 				r.af = $4;
1258 				if (rule_label(&r, $5.label))
1259 					YYERROR;
1260 				r.rtableid = $5.rtableid;
1261 				j = calloc(1, sizeof(struct node_if));
1262 				if (j == NULL)
1263 					err(1, "antispoof: calloc");
1264 				if (strlcpy(j->ifname, i->ifname,
1265 				    sizeof(j->ifname)) >= sizeof(j->ifname)) {
1266 					free(j);
1267 					yyerror("interface name too long");
1268 					YYERROR;
1269 				}
1270 				j->not = 1;
1271 				if (i->dynamic) {
1272 					h = calloc(1, sizeof(*h));
1273 					if (h == NULL)
1274 						err(1, "address: calloc");
1275 					h->addr.type = PF_ADDR_DYNIFTL;
1276 					set_ipmask(h, 128);
1277 					if (strlcpy(h->addr.v.ifname, i->ifname,
1278 					    sizeof(h->addr.v.ifname)) >=
1279 					    sizeof(h->addr.v.ifname)) {
1280 						free(h);
1281 						yyerror(
1282 						    "interface name too long");
1283 						YYERROR;
1284 					}
1285 					hh = malloc(sizeof(*hh));
1286 					if (hh == NULL)
1287 						 err(1, "address: malloc");
1288 					bcopy(h, hh, sizeof(*hh));
1289 					h->addr.iflags = PFI_AFLAG_NETWORK;
1290 				} else {
1291 					h = ifa_lookup(j->ifname,
1292 					    PFI_AFLAG_NETWORK);
1293 					hh = NULL;
1294 				}
1295 
1296 				if (h != NULL)
1297 					expand_rule(&r, j, NULL, NULL, NULL, h,
1298 					    NULL, NULL, NULL, NULL, NULL,
1299 					    NULL, "");
1300 
1301 				if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1302 					bzero(&r, sizeof(r));
1303 
1304 					r.action = PF_DROP;
1305 					r.direction = PF_IN;
1306 					r.log = $2.log;
1307 					r.logif = $2.logif;
1308 					r.quick = $2.quick;
1309 					r.af = $4;
1310 					if (rule_label(&r, $5.label))
1311 						YYERROR;
1312 					r.rtableid = $5.rtableid;
1313 					if (hh != NULL)
1314 						h = hh;
1315 					else
1316 						h = ifa_lookup(i->ifname, 0);
1317 					if (h != NULL)
1318 						expand_rule(&r, NULL, NULL,
1319 						    NULL, NULL, h, NULL, NULL,
1320 						    NULL, NULL, NULL, NULL, "");
1321 				} else
1322 					free(hh);
1323 			}
1324 			free($5.label);
1325 		}
1326 		;
1327 
1328 antispoof_ifspc	: FOR antispoof_if			{ $$ = $2; }
1329 		| FOR '{' optnl antispoof_iflst '}'	{ $$ = $4; }
1330 		;
1331 
1332 antispoof_iflst	: antispoof_if optnl			{ $$ = $1; }
1333 		| antispoof_iflst comma antispoof_if optnl {
1334 			$1->tail->next = $3;
1335 			$1->tail = $3;
1336 			$$ = $1;
1337 		}
1338 		;
1339 
1340 antispoof_if	: if_item				{ $$ = $1; }
1341 		| '(' if_item ')'			{
1342 			$2->dynamic = 1;
1343 			$$ = $2;
1344 		}
1345 		;
1346 
1347 antispoof_opts	:	{
1348 				bzero(&antispoof_opts, sizeof antispoof_opts);
1349 				antispoof_opts.rtableid = -1;
1350 			}
1351 		    antispoof_opts_l
1352 			{ $$ = antispoof_opts; }
1353 		| /* empty */	{
1354 			bzero(&antispoof_opts, sizeof antispoof_opts);
1355 			antispoof_opts.rtableid = -1;
1356 			$$ = antispoof_opts;
1357 		}
1358 		;
1359 
1360 antispoof_opts_l	: antispoof_opts_l antispoof_opt
1361 			| antispoof_opt
1362 			;
1363 
1364 antispoof_opt	: label	{
1365 			if (antispoof_opts.label) {
1366 				yyerror("label cannot be redefined");
1367 				YYERROR;
1368 			}
1369 			antispoof_opts.label = $1;
1370 		}
1371 		| RTABLE NUMBER				{
1372 			if ($2 < 0 || $2 > rt_tableid_max()) {
1373 				yyerror("invalid rtable id");
1374 				YYERROR;
1375 			}
1376 			antispoof_opts.rtableid = $2;
1377 		}
1378 		;
1379 
1380 not		: '!'		{ $$ = 1; }
1381 		| /* empty */	{ $$ = 0; }
1382 		;
1383 
1384 tabledef	: TABLE '<' STRING '>' table_opts {
1385 			struct node_host	 *h, *nh;
1386 			struct node_tinit	 *ti, *nti;
1387 
1388 			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1389 				yyerror("table name too long, max %d chars",
1390 				    PF_TABLE_NAME_SIZE - 1);
1391 				free($3);
1392 				YYERROR;
1393 			}
1394 			if (pf->loadopt & PFCTL_FLAG_TABLE)
1395 				if (process_tabledef($3, &$5)) {
1396 					free($3);
1397 					YYERROR;
1398 				}
1399 			free($3);
1400 			for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1401 			    ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1402 				if (ti->file)
1403 					free(ti->file);
1404 				for (h = ti->host; h != NULL; h = nh) {
1405 					nh = h->next;
1406 					free(h);
1407 				}
1408 				nti = SIMPLEQ_NEXT(ti, entries);
1409 				free(ti);
1410 			}
1411 		}
1412 		;
1413 
1414 table_opts	:	{
1415 			bzero(&table_opts, sizeof table_opts);
1416 			SIMPLEQ_INIT(&table_opts.init_nodes);
1417 		}
1418 		    table_opts_l
1419 			{ $$ = table_opts; }
1420 		| /* empty */
1421 			{
1422 			bzero(&table_opts, sizeof table_opts);
1423 			SIMPLEQ_INIT(&table_opts.init_nodes);
1424 			$$ = table_opts;
1425 		}
1426 		;
1427 
1428 table_opts_l	: table_opts_l table_opt
1429 		| table_opt
1430 		;
1431 
1432 table_opt	: STRING		{
1433 			if (!strcmp($1, "const"))
1434 				table_opts.flags |= PFR_TFLAG_CONST;
1435 			else if (!strcmp($1, "persist"))
1436 				table_opts.flags |= PFR_TFLAG_PERSIST;
1437 			else if (!strcmp($1, "counters"))
1438 				table_opts.flags |= PFR_TFLAG_COUNTERS;
1439 			else {
1440 				yyerror("invalid table option '%s'", $1);
1441 				free($1);
1442 				YYERROR;
1443 			}
1444 			free($1);
1445 		}
1446 		| '{' optnl '}'		{ table_opts.init_addr = 1; }
1447 		| '{' optnl host_list '}'	{
1448 			struct node_host	*n;
1449 			struct node_tinit	*ti;
1450 
1451 			for (n = $3; n != NULL; n = n->next) {
1452 				switch (n->addr.type) {
1453 				case PF_ADDR_ADDRMASK:
1454 					continue; /* ok */
1455 				case PF_ADDR_RANGE:
1456 					yyerror("address ranges are not "
1457 					    "permitted inside tables");
1458 					break;
1459 				case PF_ADDR_DYNIFTL:
1460 					yyerror("dynamic addresses are not "
1461 					    "permitted inside tables");
1462 					break;
1463 				case PF_ADDR_TABLE:
1464 					yyerror("tables cannot contain tables");
1465 					break;
1466 				case PF_ADDR_NOROUTE:
1467 					yyerror("\"no-route\" is not permitted "
1468 					    "inside tables");
1469 					break;
1470 				case PF_ADDR_URPFFAILED:
1471 					yyerror("\"urpf-failed\" is not "
1472 					    "permitted inside tables");
1473 					break;
1474 				default:
1475 					yyerror("unknown address type %d",
1476 					    n->addr.type);
1477 				}
1478 				YYERROR;
1479 			}
1480 			if (!(ti = calloc(1, sizeof(*ti))))
1481 				err(1, "table_opt: calloc");
1482 			ti->host = $3;
1483 			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1484 			    entries);
1485 			table_opts.init_addr = 1;
1486 		}
1487 		| FILENAME STRING	{
1488 			struct node_tinit	*ti;
1489 
1490 			if (!(ti = calloc(1, sizeof(*ti))))
1491 				err(1, "table_opt: calloc");
1492 			ti->file = $2;
1493 			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1494 			    entries);
1495 			table_opts.init_addr = 1;
1496 		}
1497 		;
1498 
1499 altqif		: ALTQ interface queue_opts QUEUE qassign {
1500 			struct pf_altq	a;
1501 
1502 			if (check_rulestate(PFCTL_STATE_QUEUE))
1503 				YYERROR;
1504 
1505 			memset(&a, 0, sizeof(a));
1506 			if ($3.scheduler.qtype == ALTQT_NONE) {
1507 				yyerror("no scheduler specified!");
1508 				YYERROR;
1509 			}
1510 			a.scheduler = $3.scheduler.qtype;
1511 			a.qlimit = $3.qlimit;
1512 			a.tbrsize = $3.tbrsize;
1513 			if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) {
1514 				yyerror("no child queues specified");
1515 				YYERROR;
1516 			}
1517 			if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1518 			    &$3.scheduler))
1519 				YYERROR;
1520 		}
1521 		;
1522 
1523 queuespec	: QUEUE STRING interface queue_opts qassign {
1524 			struct pf_altq	a;
1525 
1526 			if (check_rulestate(PFCTL_STATE_QUEUE)) {
1527 				free($2);
1528 				YYERROR;
1529 			}
1530 
1531 			memset(&a, 0, sizeof(a));
1532 
1533 			if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1534 			    sizeof(a.qname)) {
1535 				yyerror("queue name too long (max "
1536 				    "%d chars)", PF_QNAME_SIZE-1);
1537 				free($2);
1538 				YYERROR;
1539 			}
1540 			free($2);
1541 			if ($4.tbrsize) {
1542 				yyerror("cannot specify tbrsize for queue");
1543 				YYERROR;
1544 			}
1545 			if ($4.priority > 255) {
1546 				yyerror("priority out of range: max 255");
1547 				YYERROR;
1548 			}
1549 			a.priority = $4.priority;
1550 			a.qlimit = $4.qlimit;
1551 			a.scheduler = $4.scheduler.qtype;
1552 			if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1553 			    &$4.scheduler)) {
1554 				yyerror("errors in queue definition");
1555 				YYERROR;
1556 			}
1557 		}
1558 		;
1559 
1560 queue_opts	:	{
1561 			bzero(&queue_opts, sizeof queue_opts);
1562 			queue_opts.priority = DEFAULT_PRIORITY;
1563 			queue_opts.qlimit = DEFAULT_QLIMIT;
1564 			queue_opts.scheduler.qtype = ALTQT_NONE;
1565 			queue_opts.queue_bwspec.bw_percent = 100;
1566 		}
1567 		    queue_opts_l
1568 			{ $$ = queue_opts; }
1569 		| /* empty */ {
1570 			bzero(&queue_opts, sizeof queue_opts);
1571 			queue_opts.priority = DEFAULT_PRIORITY;
1572 			queue_opts.qlimit = DEFAULT_QLIMIT;
1573 			queue_opts.scheduler.qtype = ALTQT_NONE;
1574 			queue_opts.queue_bwspec.bw_percent = 100;
1575 			$$ = queue_opts;
1576 		}
1577 		;
1578 
1579 queue_opts_l	: queue_opts_l queue_opt
1580 		| queue_opt
1581 		;
1582 
1583 queue_opt	: BANDWIDTH bandwidth	{
1584 			if (queue_opts.marker & QOM_BWSPEC) {
1585 				yyerror("bandwidth cannot be respecified");
1586 				YYERROR;
1587 			}
1588 			queue_opts.marker |= QOM_BWSPEC;
1589 			queue_opts.queue_bwspec = $2;
1590 		}
1591 		| PRIORITY NUMBER	{
1592 			if (queue_opts.marker & QOM_PRIORITY) {
1593 				yyerror("priority cannot be respecified");
1594 				YYERROR;
1595 			}
1596 			if ($2 < 0 || $2 > 255) {
1597 				yyerror("priority out of range: max 255");
1598 				YYERROR;
1599 			}
1600 			queue_opts.marker |= QOM_PRIORITY;
1601 			queue_opts.priority = $2;
1602 		}
1603 		| QLIMIT NUMBER	{
1604 			if (queue_opts.marker & QOM_QLIMIT) {
1605 				yyerror("qlimit cannot be respecified");
1606 				YYERROR;
1607 			}
1608 			if ($2 < 0 || $2 > 65535) {
1609 				yyerror("qlimit out of range: max 65535");
1610 				YYERROR;
1611 			}
1612 			queue_opts.marker |= QOM_QLIMIT;
1613 			queue_opts.qlimit = $2;
1614 		}
1615 		| scheduler	{
1616 			if (queue_opts.marker & QOM_SCHEDULER) {
1617 				yyerror("scheduler cannot be respecified");
1618 				YYERROR;
1619 			}
1620 			queue_opts.marker |= QOM_SCHEDULER;
1621 			queue_opts.scheduler = $1;
1622 		}
1623 		| TBRSIZE NUMBER	{
1624 			if (queue_opts.marker & QOM_TBRSIZE) {
1625 				yyerror("tbrsize cannot be respecified");
1626 				YYERROR;
1627 			}
1628 			if ($2 < 0 || $2 > UINT_MAX) {
1629 				yyerror("tbrsize too big: max %u", UINT_MAX);
1630 				YYERROR;
1631 			}
1632 			queue_opts.marker |= QOM_TBRSIZE;
1633 			queue_opts.tbrsize = $2;
1634 		}
1635 		;
1636 
1637 bandwidth	: STRING {
1638 			double	 bps;
1639 			char	*cp;
1640 
1641 			$$.bw_percent = 0;
1642 
1643 			bps = strtod($1, &cp);
1644 			if (cp != NULL) {
1645 				if (strlen(cp) > 1) {
1646 					char *cu = cp + 1;
1647 					if (!strcmp(cu, "Bit") ||
1648 					    !strcmp(cu, "B") ||
1649 					    !strcmp(cu, "bit") ||
1650 					    !strcmp(cu, "b")) {
1651 						*cu = 0;
1652 					}
1653 				}
1654 				if (!strcmp(cp, "b"))
1655 					; /* nothing */
1656 				else if (!strcmp(cp, "K"))
1657 					bps *= 1000;
1658 				else if (!strcmp(cp, "M"))
1659 					bps *= 1000 * 1000;
1660 				else if (!strcmp(cp, "G"))
1661 					bps *= 1000 * 1000 * 1000;
1662 				else if (!strcmp(cp, "%")) {
1663 					if (bps < 0 || bps > 100) {
1664 						yyerror("bandwidth spec "
1665 						    "out of range");
1666 						free($1);
1667 						YYERROR;
1668 					}
1669 					$$.bw_percent = bps;
1670 					bps = 0;
1671 				} else {
1672 					yyerror("unknown unit %s", cp);
1673 					free($1);
1674 					YYERROR;
1675 				}
1676 			}
1677 			free($1);
1678 			$$.bw_absolute = (u_int64_t)bps;
1679 		}
1680 		| NUMBER {
1681 			if ($1 < 0 || $1 >= LLONG_MAX) {
1682 				yyerror("bandwidth number too big");
1683 				YYERROR;
1684 			}
1685 			$$.bw_percent = 0;
1686 			$$.bw_absolute = $1;
1687 		}
1688 		;
1689 
1690 scheduler	: CBQ				{
1691 			$$.qtype = ALTQT_CBQ;
1692 			$$.data.cbq_opts.flags = 0;
1693 		}
1694 		| CBQ '(' cbqflags_list ')'	{
1695 			$$.qtype = ALTQT_CBQ;
1696 			$$.data.cbq_opts.flags = $3;
1697 		}
1698 		| PRIQ				{
1699 			$$.qtype = ALTQT_PRIQ;
1700 			$$.data.priq_opts.flags = 0;
1701 		}
1702 		| PRIQ '(' priqflags_list ')'	{
1703 			$$.qtype = ALTQT_PRIQ;
1704 			$$.data.priq_opts.flags = $3;
1705 		}
1706 		| HFSC				{
1707 			$$.qtype = ALTQT_HFSC;
1708 			bzero(&$$.data.hfsc_opts,
1709 			    sizeof(struct node_hfsc_opts));
1710 		}
1711 		| HFSC '(' hfsc_opts ')'	{
1712 			$$.qtype = ALTQT_HFSC;
1713 			$$.data.hfsc_opts = $3;
1714 		}
1715 		| FAIRQ				{
1716 			$$.qtype = ALTQT_FAIRQ;
1717 			bzero(&$$.data.fairq_opts,
1718 				sizeof(struct node_fairq_opts));
1719 		}
1720 		| FAIRQ '(' fairq_opts ')'      {
1721 			$$.qtype = ALTQT_FAIRQ;
1722 			$$.data.fairq_opts = $3;
1723 		}
1724 		| CODEL				{
1725 			$$.qtype = ALTQT_CODEL;
1726 			bzero(&$$.data.codel_opts,
1727 				sizeof(struct codel_opts));
1728 		}
1729 		| CODEL '(' codel_opts ')'	{
1730 			$$.qtype = ALTQT_CODEL;
1731 			$$.data.codel_opts = $3;
1732 		}
1733 		;
1734 
1735 cbqflags_list	: cbqflags_item				{ $$ |= $1; }
1736 		| cbqflags_list comma cbqflags_item	{ $$ |= $3; }
1737 		;
1738 
1739 cbqflags_item	: STRING	{
1740 			if (!strcmp($1, "default"))
1741 				$$ = CBQCLF_DEFCLASS;
1742 			else if (!strcmp($1, "borrow"))
1743 				$$ = CBQCLF_BORROW;
1744 			else if (!strcmp($1, "red"))
1745 				$$ = CBQCLF_RED;
1746 			else if (!strcmp($1, "ecn"))
1747 				$$ = CBQCLF_RED|CBQCLF_ECN;
1748 			else if (!strcmp($1, "rio"))
1749 				$$ = CBQCLF_RIO;
1750 			else if (!strcmp($1, "codel"))
1751 				$$ = CBQCLF_CODEL;
1752 			else {
1753 				yyerror("unknown cbq flag \"%s\"", $1);
1754 				free($1);
1755 				YYERROR;
1756 			}
1757 			free($1);
1758 		}
1759 		;
1760 
1761 priqflags_list	: priqflags_item			{ $$ |= $1; }
1762 		| priqflags_list comma priqflags_item	{ $$ |= $3; }
1763 		;
1764 
1765 priqflags_item	: STRING	{
1766 			if (!strcmp($1, "default"))
1767 				$$ = PRCF_DEFAULTCLASS;
1768 			else if (!strcmp($1, "red"))
1769 				$$ = PRCF_RED;
1770 			else if (!strcmp($1, "ecn"))
1771 				$$ = PRCF_RED|PRCF_ECN;
1772 			else if (!strcmp($1, "rio"))
1773 				$$ = PRCF_RIO;
1774 			else if (!strcmp($1, "codel"))
1775 				$$ = PRCF_CODEL;
1776 			else {
1777 				yyerror("unknown priq flag \"%s\"", $1);
1778 				free($1);
1779 				YYERROR;
1780 			}
1781 			free($1);
1782 		}
1783 		;
1784 
1785 hfsc_opts	:	{
1786 				bzero(&hfsc_opts,
1787 				    sizeof(struct node_hfsc_opts));
1788 			}
1789 		    hfscopts_list				{
1790 			$$ = hfsc_opts;
1791 		}
1792 		;
1793 
1794 hfscopts_list	: hfscopts_item
1795 		| hfscopts_list comma hfscopts_item
1796 		;
1797 
1798 hfscopts_item	: LINKSHARE bandwidth				{
1799 			if (hfsc_opts.linkshare.used) {
1800 				yyerror("linkshare already specified");
1801 				YYERROR;
1802 			}
1803 			hfsc_opts.linkshare.m2 = $2;
1804 			hfsc_opts.linkshare.used = 1;
1805 		}
1806 		| LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')'
1807 		    {
1808 			if ($5 < 0 || $5 > INT_MAX) {
1809 				yyerror("timing in curve out of range");
1810 				YYERROR;
1811 			}
1812 			if (hfsc_opts.linkshare.used) {
1813 				yyerror("linkshare already specified");
1814 				YYERROR;
1815 			}
1816 			hfsc_opts.linkshare.m1 = $3;
1817 			hfsc_opts.linkshare.d = $5;
1818 			hfsc_opts.linkshare.m2 = $7;
1819 			hfsc_opts.linkshare.used = 1;
1820 		}
1821 		| REALTIME bandwidth				{
1822 			if (hfsc_opts.realtime.used) {
1823 				yyerror("realtime already specified");
1824 				YYERROR;
1825 			}
1826 			hfsc_opts.realtime.m2 = $2;
1827 			hfsc_opts.realtime.used = 1;
1828 		}
1829 		| REALTIME '(' bandwidth comma NUMBER comma bandwidth ')'
1830 		    {
1831 			if ($5 < 0 || $5 > INT_MAX) {
1832 				yyerror("timing in curve out of range");
1833 				YYERROR;
1834 			}
1835 			if (hfsc_opts.realtime.used) {
1836 				yyerror("realtime already specified");
1837 				YYERROR;
1838 			}
1839 			hfsc_opts.realtime.m1 = $3;
1840 			hfsc_opts.realtime.d = $5;
1841 			hfsc_opts.realtime.m2 = $7;
1842 			hfsc_opts.realtime.used = 1;
1843 		}
1844 		| UPPERLIMIT bandwidth				{
1845 			if (hfsc_opts.upperlimit.used) {
1846 				yyerror("upperlimit already specified");
1847 				YYERROR;
1848 			}
1849 			hfsc_opts.upperlimit.m2 = $2;
1850 			hfsc_opts.upperlimit.used = 1;
1851 		}
1852 		| UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')'
1853 		    {
1854 			if ($5 < 0 || $5 > INT_MAX) {
1855 				yyerror("timing in curve out of range");
1856 				YYERROR;
1857 			}
1858 			if (hfsc_opts.upperlimit.used) {
1859 				yyerror("upperlimit already specified");
1860 				YYERROR;
1861 			}
1862 			hfsc_opts.upperlimit.m1 = $3;
1863 			hfsc_opts.upperlimit.d = $5;
1864 			hfsc_opts.upperlimit.m2 = $7;
1865 			hfsc_opts.upperlimit.used = 1;
1866 		}
1867 		| STRING	{
1868 			if (!strcmp($1, "default"))
1869 				hfsc_opts.flags |= HFCF_DEFAULTCLASS;
1870 			else if (!strcmp($1, "red"))
1871 				hfsc_opts.flags |= HFCF_RED;
1872 			else if (!strcmp($1, "ecn"))
1873 				hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
1874 			else if (!strcmp($1, "rio"))
1875 				hfsc_opts.flags |= HFCF_RIO;
1876 			else if (!strcmp($1, "codel"))
1877 				hfsc_opts.flags |= HFCF_CODEL;
1878 			else {
1879 				yyerror("unknown hfsc flag \"%s\"", $1);
1880 				free($1);
1881 				YYERROR;
1882 			}
1883 			free($1);
1884 		}
1885 		;
1886 
1887 fairq_opts	:	{
1888 				bzero(&fairq_opts,
1889 				    sizeof(struct node_fairq_opts));
1890 			}
1891 		    fairqopts_list				{
1892 			$$ = fairq_opts;
1893 		}
1894 		;
1895 
1896 fairqopts_list	: fairqopts_item
1897 		| fairqopts_list comma fairqopts_item
1898 		;
1899 
1900 fairqopts_item	: LINKSHARE bandwidth				{
1901 			if (fairq_opts.linkshare.used) {
1902 				yyerror("linkshare already specified");
1903 				YYERROR;
1904 			}
1905 			fairq_opts.linkshare.m2 = $2;
1906 			fairq_opts.linkshare.used = 1;
1907 		}
1908 		| LINKSHARE '(' bandwidth number bandwidth ')'	{
1909 			if (fairq_opts.linkshare.used) {
1910 				yyerror("linkshare already specified");
1911 				YYERROR;
1912 			}
1913 			fairq_opts.linkshare.m1 = $3;
1914 			fairq_opts.linkshare.d = $4;
1915 			fairq_opts.linkshare.m2 = $5;
1916 			fairq_opts.linkshare.used = 1;
1917 		}
1918 		| HOGS bandwidth {
1919 			fairq_opts.hogs_bw = $2;
1920 		}
1921 		| BUCKETS number {
1922 			fairq_opts.nbuckets = $2;
1923 		}
1924 		| STRING	{
1925 			if (!strcmp($1, "default"))
1926 				fairq_opts.flags |= FARF_DEFAULTCLASS;
1927 			else if (!strcmp($1, "red"))
1928 				fairq_opts.flags |= FARF_RED;
1929 			else if (!strcmp($1, "ecn"))
1930 				fairq_opts.flags |= FARF_RED|FARF_ECN;
1931 			else if (!strcmp($1, "rio"))
1932 				fairq_opts.flags |= FARF_RIO;
1933 			else if (!strcmp($1, "codel"))
1934 				fairq_opts.flags |= FARF_CODEL;
1935 			else {
1936 				yyerror("unknown fairq flag \"%s\"", $1);
1937 				free($1);
1938 				YYERROR;
1939 			}
1940 			free($1);
1941 		}
1942 		;
1943 
1944 codel_opts	:	{
1945 				bzero(&codel_opts,
1946 				    sizeof(struct codel_opts));
1947 			}
1948 		    codelopts_list				{
1949 			$$ = codel_opts;
1950 		}
1951 		;
1952 
1953 codelopts_list	: codelopts_item
1954 		| codelopts_list comma codelopts_item
1955 		;
1956 
1957 codelopts_item	: INTERVAL number				{
1958 			if (codel_opts.interval) {
1959 				yyerror("interval already specified");
1960 				YYERROR;
1961 			}
1962 			codel_opts.interval = $2;
1963 		}
1964 		| TARGET number					{
1965 			if (codel_opts.target) {
1966 				yyerror("target already specified");
1967 				YYERROR;
1968 			}
1969 			codel_opts.target = $2;
1970 		}
1971 		| STRING					{
1972 			if (!strcmp($1, "ecn"))
1973 				codel_opts.ecn = 1;
1974 			else {
1975 				yyerror("unknown codel option \"%s\"", $1);
1976 				free($1);
1977 				YYERROR;
1978 			}
1979 			free($1);
1980 		}
1981 		;
1982 
1983 qassign		: /* empty */		{ $$ = NULL; }
1984 		| qassign_item		{ $$ = $1; }
1985 		| '{' optnl qassign_list '}'	{ $$ = $3; }
1986 		;
1987 
1988 qassign_list	: qassign_item optnl		{ $$ = $1; }
1989 		| qassign_list comma qassign_item optnl	{
1990 			$1->tail->next = $3;
1991 			$1->tail = $3;
1992 			$$ = $1;
1993 		}
1994 		;
1995 
1996 qassign_item	: STRING			{
1997 			$$ = calloc(1, sizeof(struct node_queue));
1998 			if ($$ == NULL)
1999 				err(1, "qassign_item: calloc");
2000 			if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
2001 			    sizeof($$->queue)) {
2002 				yyerror("queue name '%s' too long (max "
2003 				    "%d chars)", $1, sizeof($$->queue)-1);
2004 				free($1);
2005 				free($$);
2006 				YYERROR;
2007 			}
2008 			free($1);
2009 			$$->next = NULL;
2010 			$$->tail = $$;
2011 		}
2012 		;
2013 
2014 pfrule		: action dir logquick interface route af proto fromto
2015 		    filter_opts
2016 		{
2017 			struct pf_rule		 r;
2018 			struct node_state_opt	*o;
2019 			struct node_proto	*proto;
2020 			int			 srctrack = 0;
2021 			int			 statelock = 0;
2022 			int			 adaptive = 0;
2023 			int			 defaults = 0;
2024 
2025 			if (check_rulestate(PFCTL_STATE_FILTER))
2026 				YYERROR;
2027 
2028 			memset(&r, 0, sizeof(r));
2029 
2030 			r.action = $1.b1;
2031 			switch ($1.b2) {
2032 			case PFRULE_RETURNRST:
2033 				r.rule_flag |= PFRULE_RETURNRST;
2034 				r.return_ttl = $1.w;
2035 				break;
2036 			case PFRULE_RETURNICMP:
2037 				r.rule_flag |= PFRULE_RETURNICMP;
2038 				r.return_icmp = $1.w;
2039 				r.return_icmp6 = $1.w2;
2040 				break;
2041 			case PFRULE_RETURN:
2042 				r.rule_flag |= PFRULE_RETURN;
2043 				r.return_icmp = $1.w;
2044 				r.return_icmp6 = $1.w2;
2045 				break;
2046 			}
2047 			r.direction = $2;
2048 			r.log = $3.log;
2049 			r.logif = $3.logif;
2050 			r.quick = $3.quick;
2051 			r.prob = $9.prob;
2052 			r.rtableid = $9.rtableid;
2053 
2054 			if ($9.marker & FOM_PRIO) {
2055 				if ($9.prio == 0)
2056 					r.prio = PF_PRIO_ZERO;
2057 				else
2058 					r.prio = $9.prio;
2059 			}
2060 			if ($9.marker & FOM_SETPRIO) {
2061 				r.set_prio[0] = $9.set_prio[0];
2062 				r.set_prio[1] = $9.set_prio[1];
2063 				r.scrub_flags |= PFSTATE_SETPRIO;
2064 			}
2065 
2066 			r.af = $6;
2067 			if ($9.tag)
2068 				if (strlcpy(r.tagname, $9.tag,
2069 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2070 					yyerror("tag too long, max %u chars",
2071 					    PF_TAG_NAME_SIZE - 1);
2072 					YYERROR;
2073 				}
2074 			if ($9.match_tag)
2075 				if (strlcpy(r.match_tagname, $9.match_tag,
2076 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2077 					yyerror("tag too long, max %u chars",
2078 					    PF_TAG_NAME_SIZE - 1);
2079 					YYERROR;
2080 				}
2081 			r.match_tag_not = $9.match_tag_not;
2082 			if (rule_label(&r, $9.label))
2083 				YYERROR;
2084 			free($9.label);
2085 			r.flags = $9.flags.b1;
2086 			r.flagset = $9.flags.b2;
2087 			if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
2088 				yyerror("flags always false");
2089 				YYERROR;
2090 			}
2091 			if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
2092 				for (proto = $7; proto != NULL &&
2093 				    proto->proto != IPPROTO_TCP;
2094 				    proto = proto->next)
2095 					;	/* nothing */
2096 				if (proto == NULL && $7 != NULL) {
2097 					if ($9.flags.b1 || $9.flags.b2)
2098 						yyerror(
2099 						    "flags only apply to tcp");
2100 					if ($8.src_os)
2101 						yyerror(
2102 						    "OS fingerprinting only "
2103 						    "apply to tcp");
2104 					YYERROR;
2105 				}
2106 #if 0
2107 				if (($9.flags.b1 & parse_flags("S")) == 0 &&
2108 				    $8.src_os) {
2109 					yyerror("OS fingerprinting requires "
2110 					    "the SYN TCP flag (flags S/SA)");
2111 					YYERROR;
2112 				}
2113 #endif
2114 			}
2115 
2116 			r.tos = $9.tos;
2117 			r.keep_state = $9.keep.action;
2118 			o = $9.keep.options;
2119 
2120 			/* 'keep state' by default on pass rules. */
2121 			if (!r.keep_state && !r.action &&
2122 			    !($9.marker & FOM_KEEP)) {
2123 				r.keep_state = PF_STATE_NORMAL;
2124 				o = keep_state_defaults;
2125 				defaults = 1;
2126 			}
2127 
2128 			while (o) {
2129 				struct node_state_opt	*p = o;
2130 
2131 				switch (o->type) {
2132 				case PF_STATE_OPT_MAX:
2133 					if (r.max_states) {
2134 						yyerror("state option 'max' "
2135 						    "multiple definitions");
2136 						YYERROR;
2137 					}
2138 					r.max_states = o->data.max_states;
2139 					break;
2140 				case PF_STATE_OPT_NOSYNC:
2141 					if (r.rule_flag & PFRULE_NOSYNC) {
2142 						yyerror("state option 'sync' "
2143 						    "multiple definitions");
2144 						YYERROR;
2145 					}
2146 					r.rule_flag |= PFRULE_NOSYNC;
2147 					break;
2148 				case PF_STATE_OPT_SRCTRACK:
2149 					if (srctrack) {
2150 						yyerror("state option "
2151 						    "'source-track' "
2152 						    "multiple definitions");
2153 						YYERROR;
2154 					}
2155 					srctrack =  o->data.src_track;
2156 					r.rule_flag |= PFRULE_SRCTRACK;
2157 					break;
2158 				case PF_STATE_OPT_MAX_SRC_STATES:
2159 					if (r.max_src_states) {
2160 						yyerror("state option "
2161 						    "'max-src-states' "
2162 						    "multiple definitions");
2163 						YYERROR;
2164 					}
2165 					if (o->data.max_src_states == 0) {
2166 						yyerror("'max-src-states' must "
2167 						    "be > 0");
2168 						YYERROR;
2169 					}
2170 					r.max_src_states =
2171 					    o->data.max_src_states;
2172 					r.rule_flag |= PFRULE_SRCTRACK;
2173 					break;
2174 				case PF_STATE_OPT_OVERLOAD:
2175 					if (r.overload_tblname[0]) {
2176 						yyerror("multiple 'overload' "
2177 						    "table definitions");
2178 						YYERROR;
2179 					}
2180 					if (strlcpy(r.overload_tblname,
2181 					    o->data.overload.tblname,
2182 					    PF_TABLE_NAME_SIZE) >=
2183 					    PF_TABLE_NAME_SIZE) {
2184 						yyerror("state option: "
2185 						    "strlcpy");
2186 						YYERROR;
2187 					}
2188 					r.flush = o->data.overload.flush;
2189 					break;
2190 				case PF_STATE_OPT_MAX_SRC_CONN:
2191 					if (r.max_src_conn) {
2192 						yyerror("state option "
2193 						    "'max-src-conn' "
2194 						    "multiple definitions");
2195 						YYERROR;
2196 					}
2197 					if (o->data.max_src_conn == 0) {
2198 						yyerror("'max-src-conn' "
2199 						    "must be > 0");
2200 						YYERROR;
2201 					}
2202 					r.max_src_conn =
2203 					    o->data.max_src_conn;
2204 					r.rule_flag |= PFRULE_SRCTRACK |
2205 					    PFRULE_RULESRCTRACK;
2206 					break;
2207 				case PF_STATE_OPT_MAX_SRC_CONN_RATE:
2208 					if (r.max_src_conn_rate.limit) {
2209 						yyerror("state option "
2210 						    "'max-src-conn-rate' "
2211 						    "multiple definitions");
2212 						YYERROR;
2213 					}
2214 					if (!o->data.max_src_conn_rate.limit ||
2215 					    !o->data.max_src_conn_rate.seconds) {
2216 						yyerror("'max-src-conn-rate' "
2217 						    "values must be > 0");
2218 						YYERROR;
2219 					}
2220 					if (o->data.max_src_conn_rate.limit >
2221 					    PF_THRESHOLD_MAX) {
2222 						yyerror("'max-src-conn-rate' "
2223 						    "maximum rate must be < %u",
2224 						    PF_THRESHOLD_MAX);
2225 						YYERROR;
2226 					}
2227 					r.max_src_conn_rate.limit =
2228 					    o->data.max_src_conn_rate.limit;
2229 					r.max_src_conn_rate.seconds =
2230 					    o->data.max_src_conn_rate.seconds;
2231 					r.rule_flag |= PFRULE_SRCTRACK |
2232 					    PFRULE_RULESRCTRACK;
2233 					break;
2234 				case PF_STATE_OPT_MAX_SRC_NODES:
2235 					if (r.max_src_nodes) {
2236 						yyerror("state option "
2237 						    "'max-src-nodes' "
2238 						    "multiple definitions");
2239 						YYERROR;
2240 					}
2241 					if (o->data.max_src_nodes == 0) {
2242 						yyerror("'max-src-nodes' must "
2243 						    "be > 0");
2244 						YYERROR;
2245 					}
2246 					r.max_src_nodes =
2247 					    o->data.max_src_nodes;
2248 					r.rule_flag |= PFRULE_SRCTRACK |
2249 					    PFRULE_RULESRCTRACK;
2250 					break;
2251 				case PF_STATE_OPT_STATELOCK:
2252 					if (statelock) {
2253 						yyerror("state locking option: "
2254 						    "multiple definitions");
2255 						YYERROR;
2256 					}
2257 					statelock = 1;
2258 					r.rule_flag |= o->data.statelock;
2259 					break;
2260 				case PF_STATE_OPT_SLOPPY:
2261 					if (r.rule_flag & PFRULE_STATESLOPPY) {
2262 						yyerror("state sloppy option: "
2263 						    "multiple definitions");
2264 						YYERROR;
2265 					}
2266 					r.rule_flag |= PFRULE_STATESLOPPY;
2267 					break;
2268 				case PF_STATE_OPT_TIMEOUT:
2269 					if (o->data.timeout.number ==
2270 					    PFTM_ADAPTIVE_START ||
2271 					    o->data.timeout.number ==
2272 					    PFTM_ADAPTIVE_END)
2273 						adaptive = 1;
2274 					if (r.timeout[o->data.timeout.number]) {
2275 						yyerror("state timeout %s "
2276 						    "multiple definitions",
2277 						    pf_timeouts[o->data.
2278 						    timeout.number].name);
2279 						YYERROR;
2280 					}
2281 					r.timeout[o->data.timeout.number] =
2282 					    o->data.timeout.seconds;
2283 				}
2284 				o = o->next;
2285 				if (!defaults)
2286 					free(p);
2287 			}
2288 
2289 			/* 'flags S/SA' by default on stateful rules */
2290 			if (!r.action && !r.flags && !r.flagset &&
2291 			    !$9.fragment && !($9.marker & FOM_FLAGS) &&
2292 			    r.keep_state) {
2293 				r.flags = parse_flags("S");
2294 				r.flagset =  parse_flags("SA");
2295 			}
2296 			if (!adaptive && r.max_states) {
2297 				r.timeout[PFTM_ADAPTIVE_START] =
2298 				    (r.max_states / 10) * 6;
2299 				r.timeout[PFTM_ADAPTIVE_END] =
2300 				    (r.max_states / 10) * 12;
2301 			}
2302 			if (r.rule_flag & PFRULE_SRCTRACK) {
2303 				if (srctrack == PF_SRCTRACK_GLOBAL &&
2304 				    r.max_src_nodes) {
2305 					yyerror("'max-src-nodes' is "
2306 					    "incompatible with "
2307 					    "'source-track global'");
2308 					YYERROR;
2309 				}
2310 				if (srctrack == PF_SRCTRACK_GLOBAL &&
2311 				    r.max_src_conn) {
2312 					yyerror("'max-src-conn' is "
2313 					    "incompatible with "
2314 					    "'source-track global'");
2315 					YYERROR;
2316 				}
2317 				if (srctrack == PF_SRCTRACK_GLOBAL &&
2318 				    r.max_src_conn_rate.seconds) {
2319 					yyerror("'max-src-conn-rate' is "
2320 					    "incompatible with "
2321 					    "'source-track global'");
2322 					YYERROR;
2323 				}
2324 				if (r.timeout[PFTM_SRC_NODE] <
2325 				    r.max_src_conn_rate.seconds)
2326 					r.timeout[PFTM_SRC_NODE] =
2327 					    r.max_src_conn_rate.seconds;
2328 				r.rule_flag |= PFRULE_SRCTRACK;
2329 				if (srctrack == PF_SRCTRACK_RULE)
2330 					r.rule_flag |= PFRULE_RULESRCTRACK;
2331 			}
2332 			if (r.keep_state && !statelock)
2333 				r.rule_flag |= default_statelock;
2334 
2335 			if ($9.fragment)
2336 				r.rule_flag |= PFRULE_FRAGMENT;
2337 			r.allow_opts = $9.allowopts;
2338 
2339 			decide_address_family($8.src.host, &r.af);
2340 			decide_address_family($8.dst.host, &r.af);
2341 
2342 			if ($5.rt) {
2343 				if (!r.direction) {
2344 					yyerror("direction must be explicit "
2345 					    "with rules that specify routing");
2346 					YYERROR;
2347 				}
2348 				r.rt = $5.rt;
2349 				r.rpool.opts = $5.pool_opts;
2350 				if ($5.key != NULL)
2351 					memcpy(&r.rpool.key, $5.key,
2352 					    sizeof(struct pf_poolhashkey));
2353 			}
2354 			if (r.rt) {
2355 				decide_address_family($5.host, &r.af);
2356 				remove_invalid_hosts(&$5.host, &r.af);
2357 				if ($5.host == NULL) {
2358 					yyerror("no routing address with "
2359 					    "matching address family found.");
2360 					YYERROR;
2361 				}
2362 				if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
2363 				    PF_POOL_NONE && ($5.host->next != NULL ||
2364 				    $5.host->addr.type == PF_ADDR_TABLE ||
2365 				    DYNIF_MULTIADDR($5.host->addr)))
2366 					r.rpool.opts |= PF_POOL_ROUNDROBIN;
2367 				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2368 				    PF_POOL_ROUNDROBIN &&
2369 				    disallow_table($5.host, "tables are only "
2370 				    "supported in round-robin routing pools"))
2371 					YYERROR;
2372 				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2373 				    PF_POOL_ROUNDROBIN &&
2374 				    disallow_alias($5.host, "interface (%s) "
2375 				    "is only supported in round-robin "
2376 				    "routing pools"))
2377 					YYERROR;
2378 				if ($5.host->next != NULL) {
2379 					if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2380 					    PF_POOL_ROUNDROBIN) {
2381 						yyerror("r.rpool.opts must "
2382 						    "be PF_POOL_ROUNDROBIN");
2383 						YYERROR;
2384 					}
2385 				}
2386 			}
2387 			if ($9.queues.qname != NULL) {
2388 				if (strlcpy(r.qname, $9.queues.qname,
2389 				    sizeof(r.qname)) >= sizeof(r.qname)) {
2390 					yyerror("rule qname too long (max "
2391 					    "%d chars)", sizeof(r.qname)-1);
2392 					YYERROR;
2393 				}
2394 				free($9.queues.qname);
2395 			}
2396 			if ($9.queues.pqname != NULL) {
2397 				if (strlcpy(r.pqname, $9.queues.pqname,
2398 				    sizeof(r.pqname)) >= sizeof(r.pqname)) {
2399 					yyerror("rule pqname too long (max "
2400 					    "%d chars)", sizeof(r.pqname)-1);
2401 					YYERROR;
2402 				}
2403 				free($9.queues.pqname);
2404 			}
2405 #ifdef __FreeBSD__
2406 			r.divert.port = $9.divert.port;
2407 #else
2408 			if ((r.divert.port = $9.divert.port)) {
2409 				if (r.direction == PF_OUT) {
2410 					if ($9.divert.addr) {
2411 						yyerror("address specified "
2412 						    "for outgoing divert");
2413 						YYERROR;
2414 					}
2415 					bzero(&r.divert.addr,
2416 					    sizeof(r.divert.addr));
2417 				} else {
2418 					if (!$9.divert.addr) {
2419 						yyerror("no address specified "
2420 						    "for incoming divert");
2421 						YYERROR;
2422 					}
2423 					if ($9.divert.addr->af != r.af) {
2424 						yyerror("address family "
2425 						    "mismatch for divert");
2426 						YYERROR;
2427 					}
2428 					r.divert.addr =
2429 					    $9.divert.addr->addr.v.a.addr;
2430 				}
2431 			}
2432 #endif
2433 
2434 			expand_rule(&r, $4, $5.host, $7, $8.src_os,
2435 			    $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
2436 			    $9.uid, $9.gid, $9.icmpspec, "");
2437 		}
2438 		;
2439 
2440 filter_opts	:	{
2441 				bzero(&filter_opts, sizeof filter_opts);
2442 				filter_opts.rtableid = -1;
2443 			}
2444 		    filter_opts_l
2445 			{ $$ = filter_opts; }
2446 		| /* empty */	{
2447 			bzero(&filter_opts, sizeof filter_opts);
2448 			filter_opts.rtableid = -1;
2449 			$$ = filter_opts;
2450 		}
2451 		;
2452 
2453 filter_opts_l	: filter_opts_l filter_opt
2454 		| filter_opt
2455 		;
2456 
2457 filter_opt	: USER uids {
2458 			if (filter_opts.uid)
2459 				$2->tail->next = filter_opts.uid;
2460 			filter_opts.uid = $2;
2461 		}
2462 		| GROUP gids {
2463 			if (filter_opts.gid)
2464 				$2->tail->next = filter_opts.gid;
2465 			filter_opts.gid = $2;
2466 		}
2467 		| flags {
2468 			if (filter_opts.marker & FOM_FLAGS) {
2469 				yyerror("flags cannot be redefined");
2470 				YYERROR;
2471 			}
2472 			filter_opts.marker |= FOM_FLAGS;
2473 			filter_opts.flags.b1 |= $1.b1;
2474 			filter_opts.flags.b2 |= $1.b2;
2475 			filter_opts.flags.w |= $1.w;
2476 			filter_opts.flags.w2 |= $1.w2;
2477 		}
2478 		| icmpspec {
2479 			if (filter_opts.marker & FOM_ICMP) {
2480 				yyerror("icmp-type cannot be redefined");
2481 				YYERROR;
2482 			}
2483 			filter_opts.marker |= FOM_ICMP;
2484 			filter_opts.icmpspec = $1;
2485 		}
2486 		| PRIO NUMBER {
2487 			if (filter_opts.marker & FOM_PRIO) {
2488 				yyerror("prio cannot be redefined");
2489 				YYERROR;
2490 			}
2491 			if ($2 < 0 || $2 > PF_PRIO_MAX) {
2492 				yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2493 				YYERROR;
2494 			}
2495 			filter_opts.marker |= FOM_PRIO;
2496 			filter_opts.prio = $2;
2497 		}
2498 		| TOS tos {
2499 			if (filter_opts.marker & FOM_TOS) {
2500 				yyerror("tos cannot be redefined");
2501 				YYERROR;
2502 			}
2503 			filter_opts.marker |= FOM_TOS;
2504 			filter_opts.tos = $2;
2505 		}
2506 		| keep {
2507 			if (filter_opts.marker & FOM_KEEP) {
2508 				yyerror("modulate or keep cannot be redefined");
2509 				YYERROR;
2510 			}
2511 			filter_opts.marker |= FOM_KEEP;
2512 			filter_opts.keep.action = $1.action;
2513 			filter_opts.keep.options = $1.options;
2514 		}
2515 		| FRAGMENT {
2516 			filter_opts.fragment = 1;
2517 		}
2518 		| ALLOWOPTS {
2519 			filter_opts.allowopts = 1;
2520 		}
2521 		| label	{
2522 			if (filter_opts.label) {
2523 				yyerror("label cannot be redefined");
2524 				YYERROR;
2525 			}
2526 			filter_opts.label = $1;
2527 		}
2528 		| qname	{
2529 			if (filter_opts.queues.qname) {
2530 				yyerror("queue cannot be redefined");
2531 				YYERROR;
2532 			}
2533 			filter_opts.queues = $1;
2534 		}
2535 		| TAG string				{
2536 			filter_opts.tag = $2;
2537 		}
2538 		| not TAGGED string			{
2539 			filter_opts.match_tag = $3;
2540 			filter_opts.match_tag_not = $1;
2541 		}
2542 		| PROBABILITY probability		{
2543 			double	p;
2544 
2545 			p = floor($2 * UINT_MAX + 0.5);
2546 			if (p < 0.0 || p > UINT_MAX) {
2547 				yyerror("invalid probability: %lf", p);
2548 				YYERROR;
2549 			}
2550 			filter_opts.prob = (u_int32_t)p;
2551 			if (filter_opts.prob == 0)
2552 				filter_opts.prob = 1;
2553 		}
2554 		| RTABLE NUMBER				{
2555 			if ($2 < 0 || $2 > rt_tableid_max()) {
2556 				yyerror("invalid rtable id");
2557 				YYERROR;
2558 			}
2559 			filter_opts.rtableid = $2;
2560 		}
2561 		| DIVERTTO portplain {
2562 #ifdef __FreeBSD__
2563 			filter_opts.divert.port = $2.a;
2564 			if (!filter_opts.divert.port) {
2565 				yyerror("invalid divert port: %u", ntohs($2.a));
2566 				YYERROR;
2567 			}
2568 #endif
2569 		}
2570 		| DIVERTTO STRING PORT portplain {
2571 #ifndef __FreeBSD__
2572 			if ((filter_opts.divert.addr = host($2)) == NULL) {
2573 				yyerror("could not parse divert address: %s",
2574 				    $2);
2575 				free($2);
2576 				YYERROR;
2577 			}
2578 #else
2579 			if ($2)
2580 #endif
2581 			free($2);
2582 			filter_opts.divert.port = $4.a;
2583 			if (!filter_opts.divert.port) {
2584 				yyerror("invalid divert port: %u", ntohs($4.a));
2585 				YYERROR;
2586 			}
2587 		}
2588 		| DIVERTREPLY {
2589 #ifdef __FreeBSD__
2590 			yyerror("divert-reply has no meaning in FreeBSD pf(4)");
2591 			YYERROR;
2592 #else
2593 			filter_opts.divert.port = 1;	/* some random value */
2594 #endif
2595 		}
2596 		| filter_sets
2597 		;
2598 
2599 filter_sets	: SET '(' filter_sets_l ')'	{ $$ = filter_opts; }
2600 		| SET filter_set		{ $$ = filter_opts; }
2601 		;
2602 
2603 filter_sets_l	: filter_sets_l comma filter_set
2604 		| filter_set
2605 		;
2606 
2607 filter_set	: prio {
2608 			if (filter_opts.marker & FOM_SETPRIO) {
2609 				yyerror("prio cannot be redefined");
2610 				YYERROR;
2611 			}
2612 			filter_opts.marker |= FOM_SETPRIO;
2613 			filter_opts.set_prio[0] = $1.b1;
2614 			filter_opts.set_prio[1] = $1.b2;
2615 		}
2616 prio		: PRIO NUMBER {
2617 			if ($2 < 0 || $2 > PF_PRIO_MAX) {
2618 				yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2619 				YYERROR;
2620 			}
2621 			$$.b1 = $$.b2 = $2;
2622 		}
2623 		| PRIO '(' NUMBER comma NUMBER ')' {
2624 			if ($3 < 0 || $3 > PF_PRIO_MAX ||
2625 			    $5 < 0 || $5 > PF_PRIO_MAX) {
2626 				yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2627 				YYERROR;
2628 			}
2629 			$$.b1 = $3;
2630 			$$.b2 = $5;
2631 		}
2632 		;
2633 
2634 probability	: STRING				{
2635 			char	*e;
2636 			double	 p = strtod($1, &e);
2637 
2638 			if (*e == '%') {
2639 				p *= 0.01;
2640 				e++;
2641 			}
2642 			if (*e) {
2643 				yyerror("invalid probability: %s", $1);
2644 				free($1);
2645 				YYERROR;
2646 			}
2647 			free($1);
2648 			$$ = p;
2649 		}
2650 		| NUMBER				{
2651 			$$ = (double)$1;
2652 		}
2653 		;
2654 
2655 
2656 action		: PASS 			{
2657 			$$.b1 = PF_PASS;
2658 			$$.b2 = failpolicy;
2659 			$$.w = returnicmpdefault;
2660 			$$.w2 = returnicmp6default;
2661 		}
2662 		| BLOCK blockspec	{ $$ = $2; $$.b1 = PF_DROP; }
2663 		;
2664 
2665 blockspec	: /* empty */		{
2666 			$$.b2 = blockpolicy;
2667 			$$.w = returnicmpdefault;
2668 			$$.w2 = returnicmp6default;
2669 		}
2670 		| DROP			{
2671 			$$.b2 = PFRULE_DROP;
2672 			$$.w = 0;
2673 			$$.w2 = 0;
2674 		}
2675 		| RETURNRST		{
2676 			$$.b2 = PFRULE_RETURNRST;
2677 			$$.w = 0;
2678 			$$.w2 = 0;
2679 		}
2680 		| RETURNRST '(' TTL NUMBER ')'	{
2681 			if ($4 < 0 || $4 > 255) {
2682 				yyerror("illegal ttl value %d", $4);
2683 				YYERROR;
2684 			}
2685 			$$.b2 = PFRULE_RETURNRST;
2686 			$$.w = $4;
2687 			$$.w2 = 0;
2688 		}
2689 		| RETURNICMP		{
2690 			$$.b2 = PFRULE_RETURNICMP;
2691 			$$.w = returnicmpdefault;
2692 			$$.w2 = returnicmp6default;
2693 		}
2694 		| RETURNICMP6		{
2695 			$$.b2 = PFRULE_RETURNICMP;
2696 			$$.w = returnicmpdefault;
2697 			$$.w2 = returnicmp6default;
2698 		}
2699 		| RETURNICMP '(' reticmpspec ')'	{
2700 			$$.b2 = PFRULE_RETURNICMP;
2701 			$$.w = $3;
2702 			$$.w2 = returnicmpdefault;
2703 		}
2704 		| RETURNICMP6 '(' reticmp6spec ')'	{
2705 			$$.b2 = PFRULE_RETURNICMP;
2706 			$$.w = returnicmpdefault;
2707 			$$.w2 = $3;
2708 		}
2709 		| RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
2710 			$$.b2 = PFRULE_RETURNICMP;
2711 			$$.w = $3;
2712 			$$.w2 = $5;
2713 		}
2714 		| RETURN {
2715 			$$.b2 = PFRULE_RETURN;
2716 			$$.w = returnicmpdefault;
2717 			$$.w2 = returnicmp6default;
2718 		}
2719 		;
2720 
2721 reticmpspec	: STRING			{
2722 			if (!($$ = parseicmpspec($1, AF_INET))) {
2723 				free($1);
2724 				YYERROR;
2725 			}
2726 			free($1);
2727 		}
2728 		| NUMBER			{
2729 			u_int8_t		icmptype;
2730 
2731 			if ($1 < 0 || $1 > 255) {
2732 				yyerror("invalid icmp code %lu", $1);
2733 				YYERROR;
2734 			}
2735 			icmptype = returnicmpdefault >> 8;
2736 			$$ = (icmptype << 8 | $1);
2737 		}
2738 		;
2739 
2740 reticmp6spec	: STRING			{
2741 			if (!($$ = parseicmpspec($1, AF_INET6))) {
2742 				free($1);
2743 				YYERROR;
2744 			}
2745 			free($1);
2746 		}
2747 		| NUMBER			{
2748 			u_int8_t		icmptype;
2749 
2750 			if ($1 < 0 || $1 > 255) {
2751 				yyerror("invalid icmp code %lu", $1);
2752 				YYERROR;
2753 			}
2754 			icmptype = returnicmp6default >> 8;
2755 			$$ = (icmptype << 8 | $1);
2756 		}
2757 		;
2758 
2759 dir		: /* empty */			{ $$ = PF_INOUT; }
2760 		| IN				{ $$ = PF_IN; }
2761 		| OUT				{ $$ = PF_OUT; }
2762 		;
2763 
2764 quick		: /* empty */			{ $$.quick = 0; }
2765 		| QUICK				{ $$.quick = 1; }
2766 		;
2767 
2768 logquick	: /* empty */	{ $$.log = 0; $$.quick = 0; $$.logif = 0; }
2769 		| log		{ $$ = $1; $$.quick = 0; }
2770 		| QUICK		{ $$.quick = 1; $$.log = 0; $$.logif = 0; }
2771 		| log QUICK	{ $$ = $1; $$.quick = 1; }
2772 		| QUICK log	{ $$ = $2; $$.quick = 1; }
2773 		;
2774 
2775 log		: LOG			{ $$.log = PF_LOG; $$.logif = 0; }
2776 		| LOG '(' logopts ')'	{
2777 			$$.log = PF_LOG | $3.log;
2778 			$$.logif = $3.logif;
2779 		}
2780 		;
2781 
2782 logopts		: logopt			{ $$ = $1; }
2783 		| logopts comma logopt		{
2784 			$$.log = $1.log | $3.log;
2785 			$$.logif = $3.logif;
2786 			if ($$.logif == 0)
2787 				$$.logif = $1.logif;
2788 		}
2789 		;
2790 
2791 logopt		: ALL		{ $$.log = PF_LOG_ALL; $$.logif = 0; }
2792 		| USER		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2793 		| GROUP		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2794 		| TO string	{
2795 			const char	*errstr;
2796 			u_int		 i;
2797 
2798 			$$.log = 0;
2799 			if (strncmp($2, "pflog", 5)) {
2800 				yyerror("%s: should be a pflog interface", $2);
2801 				free($2);
2802 				YYERROR;
2803 			}
2804 			i = strtonum($2 + 5, 0, 255, &errstr);
2805 			if (errstr) {
2806 				yyerror("%s: %s", $2, errstr);
2807 				free($2);
2808 				YYERROR;
2809 			}
2810 			free($2);
2811 			$$.logif = i;
2812 		}
2813 		;
2814 
2815 interface	: /* empty */			{ $$ = NULL; }
2816 		| ON if_item_not		{ $$ = $2; }
2817 		| ON '{' optnl if_list '}'	{ $$ = $4; }
2818 		;
2819 
2820 if_list		: if_item_not optnl		{ $$ = $1; }
2821 		| if_list comma if_item_not optnl	{
2822 			$1->tail->next = $3;
2823 			$1->tail = $3;
2824 			$$ = $1;
2825 		}
2826 		;
2827 
2828 if_item_not	: not if_item			{ $$ = $2; $$->not = $1; }
2829 		;
2830 
2831 if_item		: STRING			{
2832 			struct node_host	*n;
2833 
2834 			$$ = calloc(1, sizeof(struct node_if));
2835 			if ($$ == NULL)
2836 				err(1, "if_item: calloc");
2837 			if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2838 			    sizeof($$->ifname)) {
2839 				free($1);
2840 				free($$);
2841 				yyerror("interface name too long");
2842 				YYERROR;
2843 			}
2844 
2845 			if ((n = ifa_exists($1)) != NULL)
2846 				$$->ifa_flags = n->ifa_flags;
2847 
2848 			free($1);
2849 			$$->not = 0;
2850 			$$->next = NULL;
2851 			$$->tail = $$;
2852 		}
2853 		;
2854 
2855 af		: /* empty */			{ $$ = 0; }
2856 		| INET				{ $$ = AF_INET; }
2857 		| INET6				{ $$ = AF_INET6; }
2858 		;
2859 
2860 proto		: /* empty */				{ $$ = NULL; }
2861 		| PROTO proto_item			{ $$ = $2; }
2862 		| PROTO '{' optnl proto_list '}'	{ $$ = $4; }
2863 		;
2864 
2865 proto_list	: proto_item optnl		{ $$ = $1; }
2866 		| proto_list comma proto_item optnl	{
2867 			$1->tail->next = $3;
2868 			$1->tail = $3;
2869 			$$ = $1;
2870 		}
2871 		;
2872 
2873 proto_item	: protoval			{
2874 			u_int8_t	pr;
2875 
2876 			pr = (u_int8_t)$1;
2877 			if (pr == 0) {
2878 				yyerror("proto 0 cannot be used");
2879 				YYERROR;
2880 			}
2881 			$$ = calloc(1, sizeof(struct node_proto));
2882 			if ($$ == NULL)
2883 				err(1, "proto_item: calloc");
2884 			$$->proto = pr;
2885 			$$->next = NULL;
2886 			$$->tail = $$;
2887 		}
2888 		;
2889 
2890 protoval	: STRING			{
2891 			struct protoent	*p;
2892 
2893 			p = getprotobyname($1);
2894 			if (p == NULL) {
2895 				yyerror("unknown protocol %s", $1);
2896 				free($1);
2897 				YYERROR;
2898 			}
2899 			$$ = p->p_proto;
2900 			free($1);
2901 		}
2902 		| NUMBER			{
2903 			if ($1 < 0 || $1 > 255) {
2904 				yyerror("protocol outside range");
2905 				YYERROR;
2906 			}
2907 		}
2908 		;
2909 
2910 fromto		: ALL				{
2911 			$$.src.host = NULL;
2912 			$$.src.port = NULL;
2913 			$$.dst.host = NULL;
2914 			$$.dst.port = NULL;
2915 			$$.src_os = NULL;
2916 		}
2917 		| from os to			{
2918 			$$.src = $1;
2919 			$$.src_os = $2;
2920 			$$.dst = $3;
2921 		}
2922 		;
2923 
2924 os		: /* empty */			{ $$ = NULL; }
2925 		| OS xos			{ $$ = $2; }
2926 		| OS '{' optnl os_list '}'	{ $$ = $4; }
2927 		;
2928 
2929 xos		: STRING {
2930 			$$ = calloc(1, sizeof(struct node_os));
2931 			if ($$ == NULL)
2932 				err(1, "os: calloc");
2933 			$$->os = $1;
2934 			$$->tail = $$;
2935 		}
2936 		;
2937 
2938 os_list		: xos optnl 			{ $$ = $1; }
2939 		| os_list comma xos optnl	{
2940 			$1->tail->next = $3;
2941 			$1->tail = $3;
2942 			$$ = $1;
2943 		}
2944 		;
2945 
2946 from		: /* empty */			{
2947 			$$.host = NULL;
2948 			$$.port = NULL;
2949 		}
2950 		| FROM ipportspec		{
2951 			$$ = $2;
2952 		}
2953 		;
2954 
2955 to		: /* empty */			{
2956 			$$.host = NULL;
2957 			$$.port = NULL;
2958 		}
2959 		| TO ipportspec		{
2960 			if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
2961 			    "not permitted in a destination address"))
2962 				YYERROR;
2963 			$$ = $2;
2964 		}
2965 		;
2966 
2967 ipportspec	: ipspec			{
2968 			$$.host = $1;
2969 			$$.port = NULL;
2970 		}
2971 		| ipspec PORT portspec		{
2972 			$$.host = $1;
2973 			$$.port = $3;
2974 		}
2975 		| PORT portspec			{
2976 			$$.host = NULL;
2977 			$$.port = $2;
2978 		}
2979 		;
2980 
2981 optnl		: '\n' optnl
2982 		|
2983 		;
2984 
2985 ipspec		: ANY				{ $$ = NULL; }
2986 		| xhost				{ $$ = $1; }
2987 		| '{' optnl host_list '}'	{ $$ = $3; }
2988 		;
2989 
2990 toipspec	: TO ipspec			{ $$ = $2; }
2991 		| /* empty */			{ $$ = NULL; }
2992 		;
2993 
2994 host_list	: ipspec optnl			{ $$ = $1; }
2995 		| host_list comma ipspec optnl	{
2996 			if ($3 == NULL)
2997 				$$ = $1;
2998 			else if ($1 == NULL)
2999 				$$ = $3;
3000 			else {
3001 				$1->tail->next = $3;
3002 				$1->tail = $3->tail;
3003 				$$ = $1;
3004 			}
3005 		}
3006 		;
3007 
3008 xhost		: not host			{
3009 			struct node_host	*n;
3010 
3011 			for (n = $2; n != NULL; n = n->next)
3012 				n->not = $1;
3013 			$$ = $2;
3014 		}
3015 		| not NOROUTE			{
3016 			$$ = calloc(1, sizeof(struct node_host));
3017 			if ($$ == NULL)
3018 				err(1, "xhost: calloc");
3019 			$$->addr.type = PF_ADDR_NOROUTE;
3020 			$$->next = NULL;
3021 			$$->not = $1;
3022 			$$->tail = $$;
3023 		}
3024 		| not URPFFAILED		{
3025 			$$ = calloc(1, sizeof(struct node_host));
3026 			if ($$ == NULL)
3027 				err(1, "xhost: calloc");
3028 			$$->addr.type = PF_ADDR_URPFFAILED;
3029 			$$->next = NULL;
3030 			$$->not = $1;
3031 			$$->tail = $$;
3032 		}
3033 		;
3034 
3035 host		: STRING			{
3036 			if (($$ = host($1)) == NULL)	{
3037 				/* error. "any" is handled elsewhere */
3038 				free($1);
3039 				yyerror("could not parse host specification");
3040 				YYERROR;
3041 			}
3042 			free($1);
3043 
3044 		}
3045 		| STRING '-' STRING		{
3046 			struct node_host *b, *e;
3047 
3048 			if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
3049 				free($1);
3050 				free($3);
3051 				yyerror("could not parse host specification");
3052 				YYERROR;
3053 			}
3054 			if (b->af != e->af ||
3055 			    b->addr.type != PF_ADDR_ADDRMASK ||
3056 			    e->addr.type != PF_ADDR_ADDRMASK ||
3057 			    unmask(&b->addr.v.a.mask, b->af) !=
3058 			    (b->af == AF_INET ? 32 : 128) ||
3059 			    unmask(&e->addr.v.a.mask, e->af) !=
3060 			    (e->af == AF_INET ? 32 : 128) ||
3061 			    b->next != NULL || b->not ||
3062 			    e->next != NULL || e->not) {
3063 				free(b);
3064 				free(e);
3065 				free($1);
3066 				free($3);
3067 				yyerror("invalid address range");
3068 				YYERROR;
3069 			}
3070 			memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
3071 			    sizeof(b->addr.v.a.mask));
3072 			b->addr.type = PF_ADDR_RANGE;
3073 			$$ = b;
3074 			free(e);
3075 			free($1);
3076 			free($3);
3077 		}
3078 		| STRING '/' NUMBER		{
3079 			char	*buf;
3080 
3081 			if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1)
3082 				err(1, "host: asprintf");
3083 			free($1);
3084 			if (($$ = host(buf)) == NULL)	{
3085 				/* error. "any" is handled elsewhere */
3086 				free(buf);
3087 				yyerror("could not parse host specification");
3088 				YYERROR;
3089 			}
3090 			free(buf);
3091 		}
3092 		| NUMBER '/' NUMBER		{
3093 			char	*buf;
3094 
3095 			/* ie. for 10/8 parsing */
3096 #ifdef __FreeBSD__
3097 			if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1)
3098 #else
3099 			if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
3100 #endif
3101 				err(1, "host: asprintf");
3102 			if (($$ = host(buf)) == NULL)	{
3103 				/* error. "any" is handled elsewhere */
3104 				free(buf);
3105 				yyerror("could not parse host specification");
3106 				YYERROR;
3107 			}
3108 			free(buf);
3109 		}
3110 		| dynaddr
3111 		| dynaddr '/' NUMBER		{
3112 			struct node_host	*n;
3113 
3114 			if ($3 < 0 || $3 > 128) {
3115 				yyerror("bit number too big");
3116 				YYERROR;
3117 			}
3118 			$$ = $1;
3119 			for (n = $1; n != NULL; n = n->next)
3120 				set_ipmask(n, $3);
3121 		}
3122 		| '<' STRING '>'	{
3123 			if (strlen($2) >= PF_TABLE_NAME_SIZE) {
3124 				yyerror("table name '%s' too long", $2);
3125 				free($2);
3126 				YYERROR;
3127 			}
3128 			$$ = calloc(1, sizeof(struct node_host));
3129 			if ($$ == NULL)
3130 				err(1, "host: calloc");
3131 			$$->addr.type = PF_ADDR_TABLE;
3132 			if (strlcpy($$->addr.v.tblname, $2,
3133 			    sizeof($$->addr.v.tblname)) >=
3134 			    sizeof($$->addr.v.tblname))
3135 				errx(1, "host: strlcpy");
3136 			free($2);
3137 			$$->next = NULL;
3138 			$$->tail = $$;
3139 		}
3140 		;
3141 
3142 number		: NUMBER
3143 		| STRING		{
3144 			u_long	ulval;
3145 
3146 			if (atoul($1, &ulval) == -1) {
3147 				yyerror("%s is not a number", $1);
3148 				free($1);
3149 				YYERROR;
3150 			} else
3151 				$$ = ulval;
3152 			free($1);
3153 		}
3154 		;
3155 
3156 dynaddr		: '(' STRING ')'		{
3157 			int	 flags = 0;
3158 			char	*p, *op;
3159 
3160 			op = $2;
3161 			if (!isalpha(op[0])) {
3162 				yyerror("invalid interface name '%s'", op);
3163 				free(op);
3164 				YYERROR;
3165 			}
3166 			while ((p = strrchr($2, ':')) != NULL) {
3167 				if (!strcmp(p+1, "network"))
3168 					flags |= PFI_AFLAG_NETWORK;
3169 				else if (!strcmp(p+1, "broadcast"))
3170 					flags |= PFI_AFLAG_BROADCAST;
3171 				else if (!strcmp(p+1, "peer"))
3172 					flags |= PFI_AFLAG_PEER;
3173 				else if (!strcmp(p+1, "0"))
3174 					flags |= PFI_AFLAG_NOALIAS;
3175 				else {
3176 					yyerror("interface %s has bad modifier",
3177 					    $2);
3178 					free(op);
3179 					YYERROR;
3180 				}
3181 				*p = '\0';
3182 			}
3183 			if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
3184 				free(op);
3185 				yyerror("illegal combination of "
3186 				    "interface modifiers");
3187 				YYERROR;
3188 			}
3189 			$$ = calloc(1, sizeof(struct node_host));
3190 			if ($$ == NULL)
3191 				err(1, "address: calloc");
3192 			$$->af = 0;
3193 			set_ipmask($$, 128);
3194 			$$->addr.type = PF_ADDR_DYNIFTL;
3195 			$$->addr.iflags = flags;
3196 			if (strlcpy($$->addr.v.ifname, $2,
3197 			    sizeof($$->addr.v.ifname)) >=
3198 			    sizeof($$->addr.v.ifname)) {
3199 				free(op);
3200 				free($$);
3201 				yyerror("interface name too long");
3202 				YYERROR;
3203 			}
3204 			free(op);
3205 			$$->next = NULL;
3206 			$$->tail = $$;
3207 		}
3208 		;
3209 
3210 portspec	: port_item			{ $$ = $1; }
3211 		| '{' optnl port_list '}'	{ $$ = $3; }
3212 		;
3213 
3214 port_list	: port_item optnl		{ $$ = $1; }
3215 		| port_list comma port_item optnl	{
3216 			$1->tail->next = $3;
3217 			$1->tail = $3;
3218 			$$ = $1;
3219 		}
3220 		;
3221 
3222 port_item	: portrange			{
3223 			$$ = calloc(1, sizeof(struct node_port));
3224 			if ($$ == NULL)
3225 				err(1, "port_item: calloc");
3226 			$$->port[0] = $1.a;
3227 			$$->port[1] = $1.b;
3228 			if ($1.t)
3229 				$$->op = PF_OP_RRG;
3230 			else
3231 				$$->op = PF_OP_EQ;
3232 			$$->next = NULL;
3233 			$$->tail = $$;
3234 		}
3235 		| unaryop portrange	{
3236 			if ($2.t) {
3237 				yyerror("':' cannot be used with an other "
3238 				    "port operator");
3239 				YYERROR;
3240 			}
3241 			$$ = calloc(1, sizeof(struct node_port));
3242 			if ($$ == NULL)
3243 				err(1, "port_item: calloc");
3244 			$$->port[0] = $2.a;
3245 			$$->port[1] = $2.b;
3246 			$$->op = $1;
3247 			$$->next = NULL;
3248 			$$->tail = $$;
3249 		}
3250 		| portrange PORTBINARY portrange	{
3251 			if ($1.t || $3.t) {
3252 				yyerror("':' cannot be used with an other "
3253 				    "port operator");
3254 				YYERROR;
3255 			}
3256 			$$ = calloc(1, sizeof(struct node_port));
3257 			if ($$ == NULL)
3258 				err(1, "port_item: calloc");
3259 			$$->port[0] = $1.a;
3260 			$$->port[1] = $3.a;
3261 			$$->op = $2;
3262 			$$->next = NULL;
3263 			$$->tail = $$;
3264 		}
3265 		;
3266 
3267 portplain	: numberstring			{
3268 			if (parseport($1, &$$, 0) == -1) {
3269 				free($1);
3270 				YYERROR;
3271 			}
3272 			free($1);
3273 		}
3274 		;
3275 
3276 portrange	: numberstring			{
3277 			if (parseport($1, &$$, PPORT_RANGE) == -1) {
3278 				free($1);
3279 				YYERROR;
3280 			}
3281 			free($1);
3282 		}
3283 		;
3284 
3285 uids		: uid_item			{ $$ = $1; }
3286 		| '{' optnl uid_list '}'	{ $$ = $3; }
3287 		;
3288 
3289 uid_list	: uid_item optnl		{ $$ = $1; }
3290 		| uid_list comma uid_item optnl	{
3291 			$1->tail->next = $3;
3292 			$1->tail = $3;
3293 			$$ = $1;
3294 		}
3295 		;
3296 
3297 uid_item	: uid				{
3298 			$$ = calloc(1, sizeof(struct node_uid));
3299 			if ($$ == NULL)
3300 				err(1, "uid_item: calloc");
3301 			$$->uid[0] = $1;
3302 			$$->uid[1] = $1;
3303 			$$->op = PF_OP_EQ;
3304 			$$->next = NULL;
3305 			$$->tail = $$;
3306 		}
3307 		| unaryop uid			{
3308 			if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3309 				yyerror("user unknown requires operator = or "
3310 				    "!=");
3311 				YYERROR;
3312 			}
3313 			$$ = calloc(1, sizeof(struct node_uid));
3314 			if ($$ == NULL)
3315 				err(1, "uid_item: calloc");
3316 			$$->uid[0] = $2;
3317 			$$->uid[1] = $2;
3318 			$$->op = $1;
3319 			$$->next = NULL;
3320 			$$->tail = $$;
3321 		}
3322 		| uid PORTBINARY uid		{
3323 			if ($1 == UID_MAX || $3 == UID_MAX) {
3324 				yyerror("user unknown requires operator = or "
3325 				    "!=");
3326 				YYERROR;
3327 			}
3328 			$$ = calloc(1, sizeof(struct node_uid));
3329 			if ($$ == NULL)
3330 				err(1, "uid_item: calloc");
3331 			$$->uid[0] = $1;
3332 			$$->uid[1] = $3;
3333 			$$->op = $2;
3334 			$$->next = NULL;
3335 			$$->tail = $$;
3336 		}
3337 		;
3338 
3339 uid		: STRING			{
3340 			if (!strcmp($1, "unknown"))
3341 				$$ = UID_MAX;
3342 			else {
3343 				struct passwd	*pw;
3344 
3345 				if ((pw = getpwnam($1)) == NULL) {
3346 					yyerror("unknown user %s", $1);
3347 					free($1);
3348 					YYERROR;
3349 				}
3350 				$$ = pw->pw_uid;
3351 			}
3352 			free($1);
3353 		}
3354 		| NUMBER			{
3355 			if ($1 < 0 || $1 >= UID_MAX) {
3356 				yyerror("illegal uid value %lu", $1);
3357 				YYERROR;
3358 			}
3359 			$$ = $1;
3360 		}
3361 		;
3362 
3363 gids		: gid_item			{ $$ = $1; }
3364 		| '{' optnl gid_list '}'	{ $$ = $3; }
3365 		;
3366 
3367 gid_list	: gid_item optnl		{ $$ = $1; }
3368 		| gid_list comma gid_item optnl	{
3369 			$1->tail->next = $3;
3370 			$1->tail = $3;
3371 			$$ = $1;
3372 		}
3373 		;
3374 
3375 gid_item	: gid				{
3376 			$$ = calloc(1, sizeof(struct node_gid));
3377 			if ($$ == NULL)
3378 				err(1, "gid_item: calloc");
3379 			$$->gid[0] = $1;
3380 			$$->gid[1] = $1;
3381 			$$->op = PF_OP_EQ;
3382 			$$->next = NULL;
3383 			$$->tail = $$;
3384 		}
3385 		| unaryop gid			{
3386 			if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3387 				yyerror("group unknown requires operator = or "
3388 				    "!=");
3389 				YYERROR;
3390 			}
3391 			$$ = calloc(1, sizeof(struct node_gid));
3392 			if ($$ == NULL)
3393 				err(1, "gid_item: calloc");
3394 			$$->gid[0] = $2;
3395 			$$->gid[1] = $2;
3396 			$$->op = $1;
3397 			$$->next = NULL;
3398 			$$->tail = $$;
3399 		}
3400 		| gid PORTBINARY gid		{
3401 			if ($1 == GID_MAX || $3 == GID_MAX) {
3402 				yyerror("group unknown requires operator = or "
3403 				    "!=");
3404 				YYERROR;
3405 			}
3406 			$$ = calloc(1, sizeof(struct node_gid));
3407 			if ($$ == NULL)
3408 				err(1, "gid_item: calloc");
3409 			$$->gid[0] = $1;
3410 			$$->gid[1] = $3;
3411 			$$->op = $2;
3412 			$$->next = NULL;
3413 			$$->tail = $$;
3414 		}
3415 		;
3416 
3417 gid		: STRING			{
3418 			if (!strcmp($1, "unknown"))
3419 				$$ = GID_MAX;
3420 			else {
3421 				struct group	*grp;
3422 
3423 				if ((grp = getgrnam($1)) == NULL) {
3424 					yyerror("unknown group %s", $1);
3425 					free($1);
3426 					YYERROR;
3427 				}
3428 				$$ = grp->gr_gid;
3429 			}
3430 			free($1);
3431 		}
3432 		| NUMBER			{
3433 			if ($1 < 0 || $1 >= GID_MAX) {
3434 				yyerror("illegal gid value %lu", $1);
3435 				YYERROR;
3436 			}
3437 			$$ = $1;
3438 		}
3439 		;
3440 
3441 flag		: STRING			{
3442 			int	f;
3443 
3444 			if ((f = parse_flags($1)) < 0) {
3445 				yyerror("bad flags %s", $1);
3446 				free($1);
3447 				YYERROR;
3448 			}
3449 			free($1);
3450 			$$.b1 = f;
3451 		}
3452 		;
3453 
3454 flags		: FLAGS flag '/' flag	{ $$.b1 = $2.b1; $$.b2 = $4.b1; }
3455 		| FLAGS '/' flag	{ $$.b1 = 0; $$.b2 = $3.b1; }
3456 		| FLAGS ANY		{ $$.b1 = 0; $$.b2 = 0; }
3457 		;
3458 
3459 icmpspec	: ICMPTYPE icmp_item			{ $$ = $2; }
3460 		| ICMPTYPE '{' optnl icmp_list '}'	{ $$ = $4; }
3461 		| ICMP6TYPE icmp6_item			{ $$ = $2; }
3462 		| ICMP6TYPE '{' optnl icmp6_list '}'	{ $$ = $4; }
3463 		;
3464 
3465 icmp_list	: icmp_item optnl		{ $$ = $1; }
3466 		| icmp_list comma icmp_item optnl {
3467 			$1->tail->next = $3;
3468 			$1->tail = $3;
3469 			$$ = $1;
3470 		}
3471 		;
3472 
3473 icmp6_list	: icmp6_item optnl		{ $$ = $1; }
3474 		| icmp6_list comma icmp6_item optnl {
3475 			$1->tail->next = $3;
3476 			$1->tail = $3;
3477 			$$ = $1;
3478 		}
3479 		;
3480 
3481 icmp_item	: icmptype		{
3482 			$$ = calloc(1, sizeof(struct node_icmp));
3483 			if ($$ == NULL)
3484 				err(1, "icmp_item: calloc");
3485 			$$->type = $1;
3486 			$$->code = 0;
3487 			$$->proto = IPPROTO_ICMP;
3488 			$$->next = NULL;
3489 			$$->tail = $$;
3490 		}
3491 		| icmptype CODE STRING	{
3492 			const struct icmpcodeent	*p;
3493 
3494 			if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3495 				yyerror("unknown icmp-code %s", $3);
3496 				free($3);
3497 				YYERROR;
3498 			}
3499 
3500 			free($3);
3501 			$$ = calloc(1, sizeof(struct node_icmp));
3502 			if ($$ == NULL)
3503 				err(1, "icmp_item: calloc");
3504 			$$->type = $1;
3505 			$$->code = p->code + 1;
3506 			$$->proto = IPPROTO_ICMP;
3507 			$$->next = NULL;
3508 			$$->tail = $$;
3509 		}
3510 		| icmptype CODE NUMBER	{
3511 			if ($3 < 0 || $3 > 255) {
3512 				yyerror("illegal icmp-code %lu", $3);
3513 				YYERROR;
3514 			}
3515 			$$ = calloc(1, sizeof(struct node_icmp));
3516 			if ($$ == NULL)
3517 				err(1, "icmp_item: calloc");
3518 			$$->type = $1;
3519 			$$->code = $3 + 1;
3520 			$$->proto = IPPROTO_ICMP;
3521 			$$->next = NULL;
3522 			$$->tail = $$;
3523 		}
3524 		;
3525 
3526 icmp6_item	: icmp6type		{
3527 			$$ = calloc(1, sizeof(struct node_icmp));
3528 			if ($$ == NULL)
3529 				err(1, "icmp_item: calloc");
3530 			$$->type = $1;
3531 			$$->code = 0;
3532 			$$->proto = IPPROTO_ICMPV6;
3533 			$$->next = NULL;
3534 			$$->tail = $$;
3535 		}
3536 		| icmp6type CODE STRING	{
3537 			const struct icmpcodeent	*p;
3538 
3539 			if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3540 				yyerror("unknown icmp6-code %s", $3);
3541 				free($3);
3542 				YYERROR;
3543 			}
3544 			free($3);
3545 
3546 			$$ = calloc(1, sizeof(struct node_icmp));
3547 			if ($$ == NULL)
3548 				err(1, "icmp_item: calloc");
3549 			$$->type = $1;
3550 			$$->code = p->code + 1;
3551 			$$->proto = IPPROTO_ICMPV6;
3552 			$$->next = NULL;
3553 			$$->tail = $$;
3554 		}
3555 		| icmp6type CODE NUMBER	{
3556 			if ($3 < 0 || $3 > 255) {
3557 				yyerror("illegal icmp-code %lu", $3);
3558 				YYERROR;
3559 			}
3560 			$$ = calloc(1, sizeof(struct node_icmp));
3561 			if ($$ == NULL)
3562 				err(1, "icmp_item: calloc");
3563 			$$->type = $1;
3564 			$$->code = $3 + 1;
3565 			$$->proto = IPPROTO_ICMPV6;
3566 			$$->next = NULL;
3567 			$$->tail = $$;
3568 		}
3569 		;
3570 
3571 icmptype	: STRING			{
3572 			const struct icmptypeent	*p;
3573 
3574 			if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
3575 				yyerror("unknown icmp-type %s", $1);
3576 				free($1);
3577 				YYERROR;
3578 			}
3579 			$$ = p->type + 1;
3580 			free($1);
3581 		}
3582 		| NUMBER			{
3583 			if ($1 < 0 || $1 > 255) {
3584 				yyerror("illegal icmp-type %lu", $1);
3585 				YYERROR;
3586 			}
3587 			$$ = $1 + 1;
3588 		}
3589 		;
3590 
3591 icmp6type	: STRING			{
3592 			const struct icmptypeent	*p;
3593 
3594 			if ((p = geticmptypebyname($1, AF_INET6)) ==
3595 			    NULL) {
3596 				yyerror("unknown icmp6-type %s", $1);
3597 				free($1);
3598 				YYERROR;
3599 			}
3600 			$$ = p->type + 1;
3601 			free($1);
3602 		}
3603 		| NUMBER			{
3604 			if ($1 < 0 || $1 > 255) {
3605 				yyerror("illegal icmp6-type %lu", $1);
3606 				YYERROR;
3607 			}
3608 			$$ = $1 + 1;
3609 		}
3610 		;
3611 
3612 tos	: STRING			{
3613 			int val;
3614 			char *end;
3615 
3616 			if (map_tos($1, &val))
3617 				$$ = val;
3618 			else if ($1[0] == '0' && $1[1] == 'x') {
3619 				errno = 0;
3620 				$$ = strtoul($1, &end, 16);
3621 				if (errno || *end != '\0')
3622 					$$ = 256;
3623 			} else
3624 				$$ = 256;		/* flag bad argument */
3625 			if ($$ < 0 || $$ > 255) {
3626 				yyerror("illegal tos value %s", $1);
3627 				free($1);
3628 				YYERROR;
3629 			}
3630 			free($1);
3631 		}
3632 		| NUMBER			{
3633 			$$ = $1;
3634 			if ($$ < 0 || $$ > 255) {
3635 				yyerror("illegal tos value %s", $1);
3636 				YYERROR;
3637 			}
3638 		}
3639 		;
3640 
3641 sourcetrack	: SOURCETRACK		{ $$ = PF_SRCTRACK; }
3642 		| SOURCETRACK GLOBAL	{ $$ = PF_SRCTRACK_GLOBAL; }
3643 		| SOURCETRACK RULE	{ $$ = PF_SRCTRACK_RULE; }
3644 		;
3645 
3646 statelock	: IFBOUND {
3647 			$$ = PFRULE_IFBOUND;
3648 		}
3649 		| FLOATING {
3650 			$$ = 0;
3651 		}
3652 		;
3653 
3654 keep		: NO STATE			{
3655 			$$.action = 0;
3656 			$$.options = NULL;
3657 		}
3658 		| KEEP STATE state_opt_spec	{
3659 			$$.action = PF_STATE_NORMAL;
3660 			$$.options = $3;
3661 		}
3662 		| MODULATE STATE state_opt_spec {
3663 			$$.action = PF_STATE_MODULATE;
3664 			$$.options = $3;
3665 		}
3666 		| SYNPROXY STATE state_opt_spec {
3667 			$$.action = PF_STATE_SYNPROXY;
3668 			$$.options = $3;
3669 		}
3670 		;
3671 
3672 flush		: /* empty */			{ $$ = 0; }
3673 		| FLUSH				{ $$ = PF_FLUSH; }
3674 		| FLUSH GLOBAL			{
3675 			$$ = PF_FLUSH | PF_FLUSH_GLOBAL;
3676 		}
3677 		;
3678 
3679 state_opt_spec	: '(' state_opt_list ')'	{ $$ = $2; }
3680 		| /* empty */			{ $$ = NULL; }
3681 		;
3682 
3683 state_opt_list	: state_opt_item		{ $$ = $1; }
3684 		| state_opt_list comma state_opt_item {
3685 			$1->tail->next = $3;
3686 			$1->tail = $3;
3687 			$$ = $1;
3688 		}
3689 		;
3690 
3691 state_opt_item	: MAXIMUM NUMBER		{
3692 			if ($2 < 0 || $2 > UINT_MAX) {
3693 				yyerror("only positive values permitted");
3694 				YYERROR;
3695 			}
3696 			$$ = calloc(1, sizeof(struct node_state_opt));
3697 			if ($$ == NULL)
3698 				err(1, "state_opt_item: calloc");
3699 			$$->type = PF_STATE_OPT_MAX;
3700 			$$->data.max_states = $2;
3701 			$$->next = NULL;
3702 			$$->tail = $$;
3703 		}
3704 		| NOSYNC				{
3705 			$$ = calloc(1, sizeof(struct node_state_opt));
3706 			if ($$ == NULL)
3707 				err(1, "state_opt_item: calloc");
3708 			$$->type = PF_STATE_OPT_NOSYNC;
3709 			$$->next = NULL;
3710 			$$->tail = $$;
3711 		}
3712 		| MAXSRCSTATES NUMBER			{
3713 			if ($2 < 0 || $2 > UINT_MAX) {
3714 				yyerror("only positive values permitted");
3715 				YYERROR;
3716 			}
3717 			$$ = calloc(1, sizeof(struct node_state_opt));
3718 			if ($$ == NULL)
3719 				err(1, "state_opt_item: calloc");
3720 			$$->type = PF_STATE_OPT_MAX_SRC_STATES;
3721 			$$->data.max_src_states = $2;
3722 			$$->next = NULL;
3723 			$$->tail = $$;
3724 		}
3725 		| MAXSRCCONN NUMBER			{
3726 			if ($2 < 0 || $2 > UINT_MAX) {
3727 				yyerror("only positive values permitted");
3728 				YYERROR;
3729 			}
3730 			$$ = calloc(1, sizeof(struct node_state_opt));
3731 			if ($$ == NULL)
3732 				err(1, "state_opt_item: calloc");
3733 			$$->type = PF_STATE_OPT_MAX_SRC_CONN;
3734 			$$->data.max_src_conn = $2;
3735 			$$->next = NULL;
3736 			$$->tail = $$;
3737 		}
3738 		| MAXSRCCONNRATE NUMBER '/' NUMBER	{
3739 			if ($2 < 0 || $2 > UINT_MAX ||
3740 			    $4 < 0 || $4 > UINT_MAX) {
3741 				yyerror("only positive values permitted");
3742 				YYERROR;
3743 			}
3744 			$$ = calloc(1, sizeof(struct node_state_opt));
3745 			if ($$ == NULL)
3746 				err(1, "state_opt_item: calloc");
3747 			$$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
3748 			$$->data.max_src_conn_rate.limit = $2;
3749 			$$->data.max_src_conn_rate.seconds = $4;
3750 			$$->next = NULL;
3751 			$$->tail = $$;
3752 		}
3753 		| OVERLOAD '<' STRING '>' flush		{
3754 			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
3755 				yyerror("table name '%s' too long", $3);
3756 				free($3);
3757 				YYERROR;
3758 			}
3759 			$$ = calloc(1, sizeof(struct node_state_opt));
3760 			if ($$ == NULL)
3761 				err(1, "state_opt_item: calloc");
3762 			if (strlcpy($$->data.overload.tblname, $3,
3763 			    PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
3764 				errx(1, "state_opt_item: strlcpy");
3765 			free($3);
3766 			$$->type = PF_STATE_OPT_OVERLOAD;
3767 			$$->data.overload.flush = $5;
3768 			$$->next = NULL;
3769 			$$->tail = $$;
3770 		}
3771 		| MAXSRCNODES NUMBER			{
3772 			if ($2 < 0 || $2 > UINT_MAX) {
3773 				yyerror("only positive values permitted");
3774 				YYERROR;
3775 			}
3776 			$$ = calloc(1, sizeof(struct node_state_opt));
3777 			if ($$ == NULL)
3778 				err(1, "state_opt_item: calloc");
3779 			$$->type = PF_STATE_OPT_MAX_SRC_NODES;
3780 			$$->data.max_src_nodes = $2;
3781 			$$->next = NULL;
3782 			$$->tail = $$;
3783 		}
3784 		| sourcetrack {
3785 			$$ = calloc(1, sizeof(struct node_state_opt));
3786 			if ($$ == NULL)
3787 				err(1, "state_opt_item: calloc");
3788 			$$->type = PF_STATE_OPT_SRCTRACK;
3789 			$$->data.src_track = $1;
3790 			$$->next = NULL;
3791 			$$->tail = $$;
3792 		}
3793 		| statelock {
3794 			$$ = calloc(1, sizeof(struct node_state_opt));
3795 			if ($$ == NULL)
3796 				err(1, "state_opt_item: calloc");
3797 			$$->type = PF_STATE_OPT_STATELOCK;
3798 			$$->data.statelock = $1;
3799 			$$->next = NULL;
3800 			$$->tail = $$;
3801 		}
3802 		| SLOPPY {
3803 			$$ = calloc(1, sizeof(struct node_state_opt));
3804 			if ($$ == NULL)
3805 				err(1, "state_opt_item: calloc");
3806 			$$->type = PF_STATE_OPT_SLOPPY;
3807 			$$->next = NULL;
3808 			$$->tail = $$;
3809 		}
3810 		| STRING NUMBER			{
3811 			int	i;
3812 
3813 			if ($2 < 0 || $2 > UINT_MAX) {
3814 				yyerror("only positive values permitted");
3815 				YYERROR;
3816 			}
3817 			for (i = 0; pf_timeouts[i].name &&
3818 			    strcmp(pf_timeouts[i].name, $1); ++i)
3819 				;	/* nothing */
3820 			if (!pf_timeouts[i].name) {
3821 				yyerror("illegal timeout name %s", $1);
3822 				free($1);
3823 				YYERROR;
3824 			}
3825 			if (strchr(pf_timeouts[i].name, '.') == NULL) {
3826 				yyerror("illegal state timeout %s", $1);
3827 				free($1);
3828 				YYERROR;
3829 			}
3830 			free($1);
3831 			$$ = calloc(1, sizeof(struct node_state_opt));
3832 			if ($$ == NULL)
3833 				err(1, "state_opt_item: calloc");
3834 			$$->type = PF_STATE_OPT_TIMEOUT;
3835 			$$->data.timeout.number = pf_timeouts[i].timeout;
3836 			$$->data.timeout.seconds = $2;
3837 			$$->next = NULL;
3838 			$$->tail = $$;
3839 		}
3840 		;
3841 
3842 label		: LABEL STRING			{
3843 			$$ = $2;
3844 		}
3845 		;
3846 
3847 qname		: QUEUE STRING				{
3848 			$$.qname = $2;
3849 			$$.pqname = NULL;
3850 		}
3851 		| QUEUE '(' STRING ')'			{
3852 			$$.qname = $3;
3853 			$$.pqname = NULL;
3854 		}
3855 		| QUEUE '(' STRING comma STRING ')'	{
3856 			$$.qname = $3;
3857 			$$.pqname = $5;
3858 		}
3859 		;
3860 
3861 no		: /* empty */			{ $$ = 0; }
3862 		| NO				{ $$ = 1; }
3863 		;
3864 
3865 portstar	: numberstring			{
3866 			if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
3867 				free($1);
3868 				YYERROR;
3869 			}
3870 			free($1);
3871 		}
3872 		;
3873 
3874 redirspec	: host				{ $$ = $1; }
3875 		| '{' optnl redir_host_list '}'	{ $$ = $3; }
3876 		;
3877 
3878 redir_host_list	: host optnl			{ $$ = $1; }
3879 		| redir_host_list comma host optnl {
3880 			$1->tail->next = $3;
3881 			$1->tail = $3->tail;
3882 			$$ = $1;
3883 		}
3884 		;
3885 
3886 redirpool	: /* empty */			{ $$ = NULL; }
3887 		| ARROW redirspec		{
3888 			$$ = calloc(1, sizeof(struct redirection));
3889 			if ($$ == NULL)
3890 				err(1, "redirection: calloc");
3891 			$$->host = $2;
3892 			$$->rport.a = $$->rport.b = $$->rport.t = 0;
3893 		}
3894 		| ARROW redirspec PORT portstar	{
3895 			$$ = calloc(1, sizeof(struct redirection));
3896 			if ($$ == NULL)
3897 				err(1, "redirection: calloc");
3898 			$$->host = $2;
3899 			$$->rport = $4;
3900 		}
3901 		;
3902 
3903 hashkey		: /* empty */
3904 		{
3905 			$$ = calloc(1, sizeof(struct pf_poolhashkey));
3906 			if ($$ == NULL)
3907 				err(1, "hashkey: calloc");
3908 			$$->key32[0] = arc4random();
3909 			$$->key32[1] = arc4random();
3910 			$$->key32[2] = arc4random();
3911 			$$->key32[3] = arc4random();
3912 		}
3913 		| string
3914 		{
3915 			if (!strncmp($1, "0x", 2)) {
3916 				if (strlen($1) != 34) {
3917 					free($1);
3918 					yyerror("hex key must be 128 bits "
3919 						"(32 hex digits) long");
3920 					YYERROR;
3921 				}
3922 				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3923 				if ($$ == NULL)
3924 					err(1, "hashkey: calloc");
3925 
3926 				if (sscanf($1, "0x%8x%8x%8x%8x",
3927 				    &$$->key32[0], &$$->key32[1],
3928 				    &$$->key32[2], &$$->key32[3]) != 4) {
3929 					free($$);
3930 					free($1);
3931 					yyerror("invalid hex key");
3932 					YYERROR;
3933 				}
3934 			} else {
3935 				MD5_CTX	context;
3936 
3937 				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3938 				if ($$ == NULL)
3939 					err(1, "hashkey: calloc");
3940 				MD5Init(&context);
3941 				MD5Update(&context, (unsigned char *)$1,
3942 				    strlen($1));
3943 				MD5Final((unsigned char *)$$, &context);
3944 				HTONL($$->key32[0]);
3945 				HTONL($$->key32[1]);
3946 				HTONL($$->key32[2]);
3947 				HTONL($$->key32[3]);
3948 			}
3949 			free($1);
3950 		}
3951 		;
3952 
3953 pool_opts	:	{ bzero(&pool_opts, sizeof pool_opts); }
3954 		    pool_opts_l
3955 			{ $$ = pool_opts; }
3956 		| /* empty */	{
3957 			bzero(&pool_opts, sizeof pool_opts);
3958 			$$ = pool_opts;
3959 		}
3960 		;
3961 
3962 pool_opts_l	: pool_opts_l pool_opt
3963 		| pool_opt
3964 		;
3965 
3966 pool_opt	: BITMASK	{
3967 			if (pool_opts.type) {
3968 				yyerror("pool type cannot be redefined");
3969 				YYERROR;
3970 			}
3971 			pool_opts.type =  PF_POOL_BITMASK;
3972 		}
3973 		| RANDOM	{
3974 			if (pool_opts.type) {
3975 				yyerror("pool type cannot be redefined");
3976 				YYERROR;
3977 			}
3978 			pool_opts.type = PF_POOL_RANDOM;
3979 		}
3980 		| SOURCEHASH hashkey {
3981 			if (pool_opts.type) {
3982 				yyerror("pool type cannot be redefined");
3983 				YYERROR;
3984 			}
3985 			pool_opts.type = PF_POOL_SRCHASH;
3986 			pool_opts.key = $2;
3987 		}
3988 		| ROUNDROBIN	{
3989 			if (pool_opts.type) {
3990 				yyerror("pool type cannot be redefined");
3991 				YYERROR;
3992 			}
3993 			pool_opts.type = PF_POOL_ROUNDROBIN;
3994 		}
3995 		| STATICPORT	{
3996 			if (pool_opts.staticport) {
3997 				yyerror("static-port cannot be redefined");
3998 				YYERROR;
3999 			}
4000 			pool_opts.staticport = 1;
4001 		}
4002 		| STICKYADDRESS	{
4003 			if (filter_opts.marker & POM_STICKYADDRESS) {
4004 				yyerror("sticky-address cannot be redefined");
4005 				YYERROR;
4006 			}
4007 			pool_opts.marker |= POM_STICKYADDRESS;
4008 			pool_opts.opts |= PF_POOL_STICKYADDR;
4009 		}
4010 		;
4011 
4012 redirection	: /* empty */			{ $$ = NULL; }
4013 		| ARROW host			{
4014 			$$ = calloc(1, sizeof(struct redirection));
4015 			if ($$ == NULL)
4016 				err(1, "redirection: calloc");
4017 			$$->host = $2;
4018 			$$->rport.a = $$->rport.b = $$->rport.t = 0;
4019 		}
4020 		| ARROW host PORT portstar	{
4021 			$$ = calloc(1, sizeof(struct redirection));
4022 			if ($$ == NULL)
4023 				err(1, "redirection: calloc");
4024 			$$->host = $2;
4025 			$$->rport = $4;
4026 		}
4027 		;
4028 
4029 natpasslog	: /* empty */	{ $$.b1 = $$.b2 = 0; $$.w2 = 0; }
4030 		| PASS		{ $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; }
4031 		| PASS log	{ $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; }
4032 		| log		{ $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; }
4033 		;
4034 
4035 nataction	: no NAT natpasslog {
4036 			if ($1 && $3.b1) {
4037 				yyerror("\"pass\" not valid with \"no\"");
4038 				YYERROR;
4039 			}
4040 			if ($1)
4041 				$$.b1 = PF_NONAT;
4042 			else
4043 				$$.b1 = PF_NAT;
4044 			$$.b2 = $3.b1;
4045 			$$.w = $3.b2;
4046 			$$.w2 = $3.w2;
4047 		}
4048 		| no RDR natpasslog {
4049 			if ($1 && $3.b1) {
4050 				yyerror("\"pass\" not valid with \"no\"");
4051 				YYERROR;
4052 			}
4053 			if ($1)
4054 				$$.b1 = PF_NORDR;
4055 			else
4056 				$$.b1 = PF_RDR;
4057 			$$.b2 = $3.b1;
4058 			$$.w = $3.b2;
4059 			$$.w2 = $3.w2;
4060 		}
4061 		;
4062 
4063 natrule		: nataction interface af proto fromto tag tagged rtable
4064 		    redirpool pool_opts
4065 		{
4066 			struct pf_rule	r;
4067 
4068 			if (check_rulestate(PFCTL_STATE_NAT))
4069 				YYERROR;
4070 
4071 			memset(&r, 0, sizeof(r));
4072 
4073 			r.action = $1.b1;
4074 			r.natpass = $1.b2;
4075 			r.log = $1.w;
4076 			r.logif = $1.w2;
4077 			r.af = $3;
4078 
4079 			if (!r.af) {
4080 				if ($5.src.host && $5.src.host->af &&
4081 				    !$5.src.host->ifindex)
4082 					r.af = $5.src.host->af;
4083 				else if ($5.dst.host && $5.dst.host->af &&
4084 				    !$5.dst.host->ifindex)
4085 					r.af = $5.dst.host->af;
4086 			}
4087 
4088 			if ($6 != NULL)
4089 				if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >=
4090 				    PF_TAG_NAME_SIZE) {
4091 					yyerror("tag too long, max %u chars",
4092 					    PF_TAG_NAME_SIZE - 1);
4093 					YYERROR;
4094 				}
4095 
4096 			if ($7.name)
4097 				if (strlcpy(r.match_tagname, $7.name,
4098 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4099 					yyerror("tag too long, max %u chars",
4100 					    PF_TAG_NAME_SIZE - 1);
4101 					YYERROR;
4102 				}
4103 			r.match_tag_not = $7.neg;
4104 			r.rtableid = $8;
4105 
4106 			if (r.action == PF_NONAT || r.action == PF_NORDR) {
4107 				if ($9 != NULL) {
4108 					yyerror("translation rule with 'no' "
4109 					    "does not need '->'");
4110 					YYERROR;
4111 				}
4112 			} else {
4113 				if ($9 == NULL || $9->host == NULL) {
4114 					yyerror("translation rule requires '-> "
4115 					    "address'");
4116 					YYERROR;
4117 				}
4118 				if (!r.af && ! $9->host->ifindex)
4119 					r.af = $9->host->af;
4120 
4121 				remove_invalid_hosts(&$9->host, &r.af);
4122 				if (invalid_redirect($9->host, r.af))
4123 					YYERROR;
4124 				if (check_netmask($9->host, r.af))
4125 					YYERROR;
4126 
4127 				r.rpool.proxy_port[0] = ntohs($9->rport.a);
4128 
4129 				switch (r.action) {
4130 				case PF_RDR:
4131 					if (!$9->rport.b && $9->rport.t &&
4132 					    $5.dst.port != NULL) {
4133 						r.rpool.proxy_port[1] =
4134 						    ntohs($9->rport.a) +
4135 						    (ntohs(
4136 						    $5.dst.port->port[1]) -
4137 						    ntohs(
4138 						    $5.dst.port->port[0]));
4139 					} else
4140 						r.rpool.proxy_port[1] =
4141 						    ntohs($9->rport.b);
4142 					break;
4143 				case PF_NAT:
4144 					r.rpool.proxy_port[1] =
4145 					    ntohs($9->rport.b);
4146 					if (!r.rpool.proxy_port[0] &&
4147 					    !r.rpool.proxy_port[1]) {
4148 						r.rpool.proxy_port[0] =
4149 						    PF_NAT_PROXY_PORT_LOW;
4150 						r.rpool.proxy_port[1] =
4151 						    PF_NAT_PROXY_PORT_HIGH;
4152 					} else if (!r.rpool.proxy_port[1])
4153 						r.rpool.proxy_port[1] =
4154 						    r.rpool.proxy_port[0];
4155 					break;
4156 				default:
4157 					break;
4158 				}
4159 
4160 				r.rpool.opts = $10.type;
4161 				if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
4162 				    PF_POOL_NONE && ($9->host->next != NULL ||
4163 				    $9->host->addr.type == PF_ADDR_TABLE ||
4164 				    DYNIF_MULTIADDR($9->host->addr)))
4165 					r.rpool.opts = PF_POOL_ROUNDROBIN;
4166 				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4167 				    PF_POOL_ROUNDROBIN &&
4168 				    disallow_table($9->host, "tables are only "
4169 				    "supported in round-robin redirection "
4170 				    "pools"))
4171 					YYERROR;
4172 				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4173 				    PF_POOL_ROUNDROBIN &&
4174 				    disallow_alias($9->host, "interface (%s) "
4175 				    "is only supported in round-robin "
4176 				    "redirection pools"))
4177 					YYERROR;
4178 				if ($9->host->next != NULL) {
4179 					if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4180 					    PF_POOL_ROUNDROBIN) {
4181 						yyerror("only round-robin "
4182 						    "valid for multiple "
4183 						    "redirection addresses");
4184 						YYERROR;
4185 					}
4186 				}
4187 			}
4188 
4189 			if ($10.key != NULL)
4190 				memcpy(&r.rpool.key, $10.key,
4191 				    sizeof(struct pf_poolhashkey));
4192 
4193 			 if ($10.opts)
4194 				r.rpool.opts |= $10.opts;
4195 
4196 			if ($10.staticport) {
4197 				if (r.action != PF_NAT) {
4198 					yyerror("the 'static-port' option is "
4199 					    "only valid with nat rules");
4200 					YYERROR;
4201 				}
4202 				if (r.rpool.proxy_port[0] !=
4203 				    PF_NAT_PROXY_PORT_LOW &&
4204 				    r.rpool.proxy_port[1] !=
4205 				    PF_NAT_PROXY_PORT_HIGH) {
4206 					yyerror("the 'static-port' option can't"
4207 					    " be used when specifying a port"
4208 					    " range");
4209 					YYERROR;
4210 				}
4211 				r.rpool.proxy_port[0] = 0;
4212 				r.rpool.proxy_port[1] = 0;
4213 			}
4214 
4215 			expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4,
4216 			    $5.src_os, $5.src.host, $5.src.port, $5.dst.host,
4217 			    $5.dst.port, 0, 0, 0, "");
4218 			free($9);
4219 		}
4220 		;
4221 
4222 binatrule	: no BINAT natpasslog interface af proto FROM ipspec toipspec tag
4223 		    tagged rtable redirection
4224 		{
4225 			struct pf_rule		binat;
4226 			struct pf_pooladdr	*pa;
4227 
4228 			if (check_rulestate(PFCTL_STATE_NAT))
4229 				YYERROR;
4230 			if (disallow_urpf_failed($9, "\"urpf-failed\" is not "
4231 			    "permitted as a binat destination"))
4232 				YYERROR;
4233 
4234 			memset(&binat, 0, sizeof(binat));
4235 
4236 			if ($1 && $3.b1) {
4237 				yyerror("\"pass\" not valid with \"no\"");
4238 				YYERROR;
4239 			}
4240 			if ($1)
4241 				binat.action = PF_NOBINAT;
4242 			else
4243 				binat.action = PF_BINAT;
4244 			binat.natpass = $3.b1;
4245 			binat.log = $3.b2;
4246 			binat.logif = $3.w2;
4247 			binat.af = $5;
4248 			if (!binat.af && $8 != NULL && $8->af)
4249 				binat.af = $8->af;
4250 			if (!binat.af && $9 != NULL && $9->af)
4251 				binat.af = $9->af;
4252 
4253 			if (!binat.af && $13 != NULL && $13->host)
4254 				binat.af = $13->host->af;
4255 			if (!binat.af) {
4256 				yyerror("address family (inet/inet6) "
4257 				    "undefined");
4258 				YYERROR;
4259 			}
4260 
4261 			if ($4 != NULL) {
4262 				memcpy(binat.ifname, $4->ifname,
4263 				    sizeof(binat.ifname));
4264 				binat.ifnot = $4->not;
4265 				free($4);
4266 			}
4267 
4268 			if ($10 != NULL)
4269 				if (strlcpy(binat.tagname, $10,
4270 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4271 					yyerror("tag too long, max %u chars",
4272 					    PF_TAG_NAME_SIZE - 1);
4273 					YYERROR;
4274 				}
4275 			if ($11.name)
4276 				if (strlcpy(binat.match_tagname, $11.name,
4277 				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4278 					yyerror("tag too long, max %u chars",
4279 					    PF_TAG_NAME_SIZE - 1);
4280 					YYERROR;
4281 				}
4282 			binat.match_tag_not = $11.neg;
4283 			binat.rtableid = $12;
4284 
4285 			if ($6 != NULL) {
4286 				binat.proto = $6->proto;
4287 				free($6);
4288 			}
4289 
4290 			if ($8 != NULL && disallow_table($8, "invalid use of "
4291 			    "table <%s> as the source address of a binat rule"))
4292 				YYERROR;
4293 			if ($8 != NULL && disallow_alias($8, "invalid use of "
4294 			    "interface (%s) as the source address of a binat "
4295 			    "rule"))
4296 				YYERROR;
4297 			if ($13 != NULL && $13->host != NULL && disallow_table(
4298 			    $13->host, "invalid use of table <%s> as the "
4299 			    "redirect address of a binat rule"))
4300 				YYERROR;
4301 			if ($13 != NULL && $13->host != NULL && disallow_alias(
4302 			    $13->host, "invalid use of interface (%s) as the "
4303 			    "redirect address of a binat rule"))
4304 				YYERROR;
4305 
4306 			if ($8 != NULL) {
4307 				if ($8->next) {
4308 					yyerror("multiple binat ip addresses");
4309 					YYERROR;
4310 				}
4311 				if ($8->addr.type == PF_ADDR_DYNIFTL)
4312 					$8->af = binat.af;
4313 				if ($8->af != binat.af) {
4314 					yyerror("binat ip versions must match");
4315 					YYERROR;
4316 				}
4317 				if (check_netmask($8, binat.af))
4318 					YYERROR;
4319 				memcpy(&binat.src.addr, &$8->addr,
4320 				    sizeof(binat.src.addr));
4321 				free($8);
4322 			}
4323 			if ($9 != NULL) {
4324 				if ($9->next) {
4325 					yyerror("multiple binat ip addresses");
4326 					YYERROR;
4327 				}
4328 				if ($9->af != binat.af && $9->af) {
4329 					yyerror("binat ip versions must match");
4330 					YYERROR;
4331 				}
4332 				if (check_netmask($9, binat.af))
4333 					YYERROR;
4334 				memcpy(&binat.dst.addr, &$9->addr,
4335 				    sizeof(binat.dst.addr));
4336 				binat.dst.neg = $9->not;
4337 				free($9);
4338 			}
4339 
4340 			if (binat.action == PF_NOBINAT) {
4341 				if ($13 != NULL) {
4342 					yyerror("'no binat' rule does not need"
4343 					    " '->'");
4344 					YYERROR;
4345 				}
4346 			} else {
4347 				if ($13 == NULL || $13->host == NULL) {
4348 					yyerror("'binat' rule requires"
4349 					    " '-> address'");
4350 					YYERROR;
4351 				}
4352 
4353 				remove_invalid_hosts(&$13->host, &binat.af);
4354 				if (invalid_redirect($13->host, binat.af))
4355 					YYERROR;
4356 				if ($13->host->next != NULL) {
4357 					yyerror("binat rule must redirect to "
4358 					    "a single address");
4359 					YYERROR;
4360 				}
4361 				if (check_netmask($13->host, binat.af))
4362 					YYERROR;
4363 
4364 				if (!PF_AZERO(&binat.src.addr.v.a.mask,
4365 				    binat.af) &&
4366 				    !PF_AEQ(&binat.src.addr.v.a.mask,
4367 				    &$13->host->addr.v.a.mask, binat.af)) {
4368 					yyerror("'binat' source mask and "
4369 					    "redirect mask must be the same");
4370 					YYERROR;
4371 				}
4372 
4373 				TAILQ_INIT(&binat.rpool.list);
4374 				pa = calloc(1, sizeof(struct pf_pooladdr));
4375 				if (pa == NULL)
4376 					err(1, "binat: calloc");
4377 				pa->addr = $13->host->addr;
4378 				pa->ifname[0] = 0;
4379 				TAILQ_INSERT_TAIL(&binat.rpool.list,
4380 				    pa, entries);
4381 
4382 				free($13);
4383 			}
4384 
4385 			pfctl_add_rule(pf, &binat, "");
4386 		}
4387 		;
4388 
4389 tag		: /* empty */		{ $$ = NULL; }
4390 		| TAG STRING		{ $$ = $2; }
4391 		;
4392 
4393 tagged		: /* empty */		{ $$.neg = 0; $$.name = NULL; }
4394 		| not TAGGED string	{ $$.neg = $1; $$.name = $3; }
4395 		;
4396 
4397 rtable		: /* empty */		{ $$ = -1; }
4398 		| RTABLE NUMBER		{
4399 			if ($2 < 0 || $2 > rt_tableid_max()) {
4400 				yyerror("invalid rtable id");
4401 				YYERROR;
4402 			}
4403 			$$ = $2;
4404 		}
4405 		;
4406 
4407 route_host	: STRING			{
4408 			$$ = calloc(1, sizeof(struct node_host));
4409 			if ($$ == NULL)
4410 				err(1, "route_host: calloc");
4411 			$$->ifname = $1;
4412 			set_ipmask($$, 128);
4413 			$$->next = NULL;
4414 			$$->tail = $$;
4415 		}
4416 		| '(' STRING host ')'		{
4417 			struct node_host *n;
4418 
4419 			$$ = $3;
4420 			for (n = $3; n != NULL; n = n->next)
4421 				n->ifname = $2;
4422 		}
4423 		;
4424 
4425 route_host_list	: route_host optnl			{ $$ = $1; }
4426 		| route_host_list comma route_host optnl {
4427 			if ($1->af == 0)
4428 				$1->af = $3->af;
4429 			if ($1->af != $3->af) {
4430 				yyerror("all pool addresses must be in the "
4431 				    "same address family");
4432 				YYERROR;
4433 			}
4434 			$1->tail->next = $3;
4435 			$1->tail = $3->tail;
4436 			$$ = $1;
4437 		}
4438 		;
4439 
4440 routespec	: route_host			{ $$ = $1; }
4441 		| '{' optnl route_host_list '}'	{ $$ = $3; }
4442 		;
4443 
4444 route		: /* empty */			{
4445 			$$.host = NULL;
4446 			$$.rt = 0;
4447 			$$.pool_opts = 0;
4448 		}
4449 		| FASTROUTE {
4450 			/* backwards-compat */
4451 			$$.host = NULL;
4452 			$$.rt = 0;
4453 			$$.pool_opts = 0;
4454 		}
4455 		| ROUTETO routespec pool_opts {
4456 			$$.host = $2;
4457 			$$.rt = PF_ROUTETO;
4458 			$$.pool_opts = $3.type | $3.opts;
4459 			if ($3.key != NULL)
4460 				$$.key = $3.key;
4461 		}
4462 		| REPLYTO routespec pool_opts {
4463 			$$.host = $2;
4464 			$$.rt = PF_REPLYTO;
4465 			$$.pool_opts = $3.type | $3.opts;
4466 			if ($3.key != NULL)
4467 				$$.key = $3.key;
4468 		}
4469 		| DUPTO routespec pool_opts {
4470 			$$.host = $2;
4471 			$$.rt = PF_DUPTO;
4472 			$$.pool_opts = $3.type | $3.opts;
4473 			if ($3.key != NULL)
4474 				$$.key = $3.key;
4475 		}
4476 		;
4477 
4478 timeout_spec	: STRING NUMBER
4479 		{
4480 			if (check_rulestate(PFCTL_STATE_OPTION)) {
4481 				free($1);
4482 				YYERROR;
4483 			}
4484 			if ($2 < 0 || $2 > UINT_MAX) {
4485 				yyerror("only positive values permitted");
4486 				YYERROR;
4487 			}
4488 			if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
4489 				yyerror("unknown timeout %s", $1);
4490 				free($1);
4491 				YYERROR;
4492 			}
4493 			free($1);
4494 		}
4495 		| INTERVAL NUMBER		{
4496 			if (check_rulestate(PFCTL_STATE_OPTION))
4497 				YYERROR;
4498 			if ($2 < 0 || $2 > UINT_MAX) {
4499 				yyerror("only positive values permitted");
4500 				YYERROR;
4501 			}
4502 			if (pfctl_set_timeout(pf, "interval", $2, 0) != 0)
4503 				YYERROR;
4504 		}
4505 		;
4506 
4507 timeout_list	: timeout_list comma timeout_spec optnl
4508 		| timeout_spec optnl
4509 		;
4510 
4511 limit_spec	: STRING NUMBER
4512 		{
4513 			if (check_rulestate(PFCTL_STATE_OPTION)) {
4514 				free($1);
4515 				YYERROR;
4516 			}
4517 			if ($2 < 0 || $2 > UINT_MAX) {
4518 				yyerror("only positive values permitted");
4519 				YYERROR;
4520 			}
4521 			if (pfctl_set_limit(pf, $1, $2) != 0) {
4522 				yyerror("unable to set limit %s %u", $1, $2);
4523 				free($1);
4524 				YYERROR;
4525 			}
4526 			free($1);
4527 		}
4528 		;
4529 
4530 limit_list	: limit_list comma limit_spec optnl
4531 		| limit_spec optnl
4532 		;
4533 
4534 comma		: ','
4535 		| /* empty */
4536 		;
4537 
4538 yesno		: NO			{ $$ = 0; }
4539 		| STRING		{
4540 			if (!strcmp($1, "yes"))
4541 				$$ = 1;
4542 			else {
4543 				yyerror("invalid value '%s', expected 'yes' "
4544 				    "or 'no'", $1);
4545 				free($1);
4546 				YYERROR;
4547 			}
4548 			free($1);
4549 		}
4550 		;
4551 
4552 unaryop		: '='		{ $$ = PF_OP_EQ; }
4553 		| '!' '='	{ $$ = PF_OP_NE; }
4554 		| '<' '='	{ $$ = PF_OP_LE; }
4555 		| '<'		{ $$ = PF_OP_LT; }
4556 		| '>' '='	{ $$ = PF_OP_GE; }
4557 		| '>'		{ $$ = PF_OP_GT; }
4558 		;
4559 
4560 %%
4561 
4562 int
4563 yyerror(const char *fmt, ...)
4564 {
4565 	va_list		 ap;
4566 
4567 	file->errors++;
4568 	va_start(ap, fmt);
4569 	fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
4570 	vfprintf(stderr, fmt, ap);
4571 	fprintf(stderr, "\n");
4572 	va_end(ap);
4573 	return (0);
4574 }
4575 
4576 int
4577 disallow_table(struct node_host *h, const char *fmt)
4578 {
4579 	for (; h != NULL; h = h->next)
4580 		if (h->addr.type == PF_ADDR_TABLE) {
4581 			yyerror(fmt, h->addr.v.tblname);
4582 			return (1);
4583 		}
4584 	return (0);
4585 }
4586 
4587 int
4588 disallow_urpf_failed(struct node_host *h, const char *fmt)
4589 {
4590 	for (; h != NULL; h = h->next)
4591 		if (h->addr.type == PF_ADDR_URPFFAILED) {
4592 			yyerror(fmt);
4593 			return (1);
4594 		}
4595 	return (0);
4596 }
4597 
4598 int
4599 disallow_alias(struct node_host *h, const char *fmt)
4600 {
4601 	for (; h != NULL; h = h->next)
4602 		if (DYNIF_MULTIADDR(h->addr)) {
4603 			yyerror(fmt, h->addr.v.tblname);
4604 			return (1);
4605 		}
4606 	return (0);
4607 }
4608 
4609 int
4610 rule_consistent(struct pf_rule *r, int anchor_call)
4611 {
4612 	int	problems = 0;
4613 
4614 	switch (r->action) {
4615 	case PF_PASS:
4616 	case PF_DROP:
4617 	case PF_SCRUB:
4618 	case PF_NOSCRUB:
4619 		problems = filter_consistent(r, anchor_call);
4620 		break;
4621 	case PF_NAT:
4622 	case PF_NONAT:
4623 		problems = nat_consistent(r);
4624 		break;
4625 	case PF_RDR:
4626 	case PF_NORDR:
4627 		problems = rdr_consistent(r);
4628 		break;
4629 	case PF_BINAT:
4630 	case PF_NOBINAT:
4631 	default:
4632 		break;
4633 	}
4634 	return (problems);
4635 }
4636 
4637 int
4638 filter_consistent(struct pf_rule *r, int anchor_call)
4639 {
4640 	int	problems = 0;
4641 
4642 	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
4643 	    (r->src.port_op || r->dst.port_op)) {
4644 		yyerror("port only applies to tcp/udp");
4645 		problems++;
4646 	}
4647 	if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
4648 	    (r->type || r->code)) {
4649 		yyerror("icmp-type/code only applies to icmp");
4650 		problems++;
4651 	}
4652 	if (!r->af && (r->type || r->code)) {
4653 		yyerror("must indicate address family with icmp-type/code");
4654 		problems++;
4655 	}
4656 	if (r->overload_tblname[0] &&
4657 	    r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
4658 		yyerror("'overload' requires 'max-src-conn' "
4659 		    "or 'max-src-conn-rate'");
4660 		problems++;
4661 	}
4662 	if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
4663 	    (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
4664 		yyerror("proto %s doesn't match address family %s",
4665 		    r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
4666 		    r->af == AF_INET ? "inet" : "inet6");
4667 		problems++;
4668 	}
4669 	if (r->allow_opts && r->action != PF_PASS) {
4670 		yyerror("allow-opts can only be specified for pass rules");
4671 		problems++;
4672 	}
4673 	if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
4674 	    r->dst.port_op || r->flagset || r->type || r->code)) {
4675 		yyerror("fragments can be filtered only on IP header fields");
4676 		problems++;
4677 	}
4678 	if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
4679 		yyerror("return-rst can only be applied to TCP rules");
4680 		problems++;
4681 	}
4682 	if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
4683 		yyerror("max-src-nodes requires 'source-track rule'");
4684 		problems++;
4685 	}
4686 	if (r->action == PF_DROP && r->keep_state) {
4687 		yyerror("keep state on block rules doesn't make sense");
4688 		problems++;
4689 	}
4690 	if (r->rule_flag & PFRULE_STATESLOPPY &&
4691 	    (r->keep_state == PF_STATE_MODULATE ||
4692 	    r->keep_state == PF_STATE_SYNPROXY)) {
4693 		yyerror("sloppy state matching cannot be used with "
4694 		    "synproxy state or modulate state");
4695 		problems++;
4696 	}
4697 	return (-problems);
4698 }
4699 
4700 int
4701 nat_consistent(struct pf_rule *r)
4702 {
4703 	return (0);	/* yeah! */
4704 }
4705 
4706 int
4707 rdr_consistent(struct pf_rule *r)
4708 {
4709 	int			 problems = 0;
4710 
4711 	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) {
4712 		if (r->src.port_op) {
4713 			yyerror("src port only applies to tcp/udp");
4714 			problems++;
4715 		}
4716 		if (r->dst.port_op) {
4717 			yyerror("dst port only applies to tcp/udp");
4718 			problems++;
4719 		}
4720 		if (r->rpool.proxy_port[0]) {
4721 			yyerror("rpool port only applies to tcp/udp");
4722 			problems++;
4723 		}
4724 	}
4725 	if (r->dst.port_op &&
4726 	    r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) {
4727 		yyerror("invalid port operator for rdr destination port");
4728 		problems++;
4729 	}
4730 	return (-problems);
4731 }
4732 
4733 int
4734 process_tabledef(char *name, struct table_opts *opts)
4735 {
4736 	struct pfr_buffer	 ab;
4737 	struct node_tinit	*ti;
4738 
4739 	bzero(&ab, sizeof(ab));
4740 	ab.pfrb_type = PFRB_ADDRS;
4741 	SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
4742 		if (ti->file)
4743 			if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
4744 				if (errno)
4745 					yyerror("cannot load \"%s\": %s",
4746 					    ti->file, strerror(errno));
4747 				else
4748 					yyerror("file \"%s\" contains bad data",
4749 					    ti->file);
4750 				goto _error;
4751 			}
4752 		if (ti->host)
4753 			if (append_addr_host(&ab, ti->host, 0, 0)) {
4754 				yyerror("cannot create address buffer: %s",
4755 				    strerror(errno));
4756 				goto _error;
4757 			}
4758 	}
4759 	if (pf->opts & PF_OPT_VERBOSE)
4760 		print_tabledef(name, opts->flags, opts->init_addr,
4761 		    &opts->init_nodes);
4762 	if (!(pf->opts & PF_OPT_NOACTION) &&
4763 	    pfctl_define_table(name, opts->flags, opts->init_addr,
4764 	    pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
4765 		yyerror("cannot define table %s: %s", name,
4766 		    pfr_strerror(errno));
4767 		goto _error;
4768 	}
4769 	pf->tdirty = 1;
4770 	pfr_buf_clear(&ab);
4771 	return (0);
4772 _error:
4773 	pfr_buf_clear(&ab);
4774 	return (-1);
4775 }
4776 
4777 struct keywords {
4778 	const char	*k_name;
4779 	int		 k_val;
4780 };
4781 
4782 /* macro gore, but you should've seen the prior indentation nightmare... */
4783 
4784 #define FREE_LIST(T,r) \
4785 	do { \
4786 		T *p, *node = r; \
4787 		while (node != NULL) { \
4788 			p = node; \
4789 			node = node->next; \
4790 			free(p); \
4791 		} \
4792 	} while (0)
4793 
4794 #define LOOP_THROUGH(T,n,r,C) \
4795 	do { \
4796 		T *n; \
4797 		if (r == NULL) { \
4798 			r = calloc(1, sizeof(T)); \
4799 			if (r == NULL) \
4800 				err(1, "LOOP: calloc"); \
4801 			r->next = NULL; \
4802 		} \
4803 		n = r; \
4804 		while (n != NULL) { \
4805 			do { \
4806 				C; \
4807 			} while (0); \
4808 			n = n->next; \
4809 		} \
4810 	} while (0)
4811 
4812 void
4813 expand_label_str(char *label, size_t len, const char *srch, const char *repl)
4814 {
4815 	char *tmp;
4816 	char *p, *q;
4817 
4818 	if ((tmp = calloc(1, len)) == NULL)
4819 		err(1, "expand_label_str: calloc");
4820 	p = q = label;
4821 	while ((q = strstr(p, srch)) != NULL) {
4822 		*q = '\0';
4823 		if ((strlcat(tmp, p, len) >= len) ||
4824 		    (strlcat(tmp, repl, len) >= len))
4825 			errx(1, "expand_label: label too long");
4826 		q += strlen(srch);
4827 		p = q;
4828 	}
4829 	if (strlcat(tmp, p, len) >= len)
4830 		errx(1, "expand_label: label too long");
4831 	strlcpy(label, tmp, len);	/* always fits */
4832 	free(tmp);
4833 }
4834 
4835 void
4836 expand_label_if(const char *name, char *label, size_t len, const char *ifname)
4837 {
4838 	if (strstr(label, name) != NULL) {
4839 		if (!*ifname)
4840 			expand_label_str(label, len, name, "any");
4841 		else
4842 			expand_label_str(label, len, name, ifname);
4843 	}
4844 }
4845 
4846 void
4847 expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
4848     struct node_host *h)
4849 {
4850 	char tmp[64], tmp_not[66];
4851 
4852 	if (strstr(label, name) != NULL) {
4853 		switch (h->addr.type) {
4854 		case PF_ADDR_DYNIFTL:
4855 			snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname);
4856 			break;
4857 		case PF_ADDR_TABLE:
4858 			snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname);
4859 			break;
4860 		case PF_ADDR_NOROUTE:
4861 			snprintf(tmp, sizeof(tmp), "no-route");
4862 			break;
4863 		case PF_ADDR_URPFFAILED:
4864 			snprintf(tmp, sizeof(tmp), "urpf-failed");
4865 			break;
4866 		case PF_ADDR_ADDRMASK:
4867 			if (!af || (PF_AZERO(&h->addr.v.a.addr, af) &&
4868 			    PF_AZERO(&h->addr.v.a.mask, af)))
4869 				snprintf(tmp, sizeof(tmp), "any");
4870 			else {
4871 				char	a[48];
4872 				int	bits;
4873 
4874 				if (inet_ntop(af, &h->addr.v.a.addr, a,
4875 				    sizeof(a)) == NULL)
4876 					snprintf(tmp, sizeof(tmp), "?");
4877 				else {
4878 					bits = unmask(&h->addr.v.a.mask, af);
4879 					if ((af == AF_INET && bits < 32) ||
4880 					    (af == AF_INET6 && bits < 128))
4881 						snprintf(tmp, sizeof(tmp),
4882 						    "%s/%d", a, bits);
4883 					else
4884 						snprintf(tmp, sizeof(tmp),
4885 						    "%s", a);
4886 				}
4887 			}
4888 			break;
4889 		default:
4890 			snprintf(tmp, sizeof(tmp), "?");
4891 			break;
4892 		}
4893 
4894 		if (h->not) {
4895 			snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
4896 			expand_label_str(label, len, name, tmp_not);
4897 		} else
4898 			expand_label_str(label, len, name, tmp);
4899 	}
4900 }
4901 
4902 void
4903 expand_label_port(const char *name, char *label, size_t len,
4904     struct node_port *port)
4905 {
4906 	char	 a1[6], a2[6], op[13] = "";
4907 
4908 	if (strstr(label, name) != NULL) {
4909 		snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0]));
4910 		snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1]));
4911 		if (!port->op)
4912 			;
4913 		else if (port->op == PF_OP_IRG)
4914 			snprintf(op, sizeof(op), "%s><%s", a1, a2);
4915 		else if (port->op == PF_OP_XRG)
4916 			snprintf(op, sizeof(op), "%s<>%s", a1, a2);
4917 		else if (port->op == PF_OP_EQ)
4918 			snprintf(op, sizeof(op), "%s", a1);
4919 		else if (port->op == PF_OP_NE)
4920 			snprintf(op, sizeof(op), "!=%s", a1);
4921 		else if (port->op == PF_OP_LT)
4922 			snprintf(op, sizeof(op), "<%s", a1);
4923 		else if (port->op == PF_OP_LE)
4924 			snprintf(op, sizeof(op), "<=%s", a1);
4925 		else if (port->op == PF_OP_GT)
4926 			snprintf(op, sizeof(op), ">%s", a1);
4927 		else if (port->op == PF_OP_GE)
4928 			snprintf(op, sizeof(op), ">=%s", a1);
4929 		expand_label_str(label, len, name, op);
4930 	}
4931 }
4932 
4933 void
4934 expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
4935 {
4936 	struct protoent *pe;
4937 	char n[4];
4938 
4939 	if (strstr(label, name) != NULL) {
4940 		pe = getprotobynumber(proto);
4941 		if (pe != NULL)
4942 			expand_label_str(label, len, name, pe->p_name);
4943 		else {
4944 			snprintf(n, sizeof(n), "%u", proto);
4945 			expand_label_str(label, len, name, n);
4946 		}
4947 	}
4948 }
4949 
4950 void
4951 expand_label_nr(const char *name, char *label, size_t len)
4952 {
4953 	char n[11];
4954 
4955 	if (strstr(label, name) != NULL) {
4956 		snprintf(n, sizeof(n), "%u", pf->anchor->match);
4957 		expand_label_str(label, len, name, n);
4958 	}
4959 }
4960 
4961 void
4962 expand_label(char *label, size_t len, const char *ifname, sa_family_t af,
4963     struct node_host *src_host, struct node_port *src_port,
4964     struct node_host *dst_host, struct node_port *dst_port,
4965     u_int8_t proto)
4966 {
4967 	expand_label_if("$if", label, len, ifname);
4968 	expand_label_addr("$srcaddr", label, len, af, src_host);
4969 	expand_label_addr("$dstaddr", label, len, af, dst_host);
4970 	expand_label_port("$srcport", label, len, src_port);
4971 	expand_label_port("$dstport", label, len, dst_port);
4972 	expand_label_proto("$proto", label, len, proto);
4973 	expand_label_nr("$nr", label, len);
4974 }
4975 
4976 int
4977 expand_altq(struct pf_altq *a, struct node_if *interfaces,
4978     struct node_queue *nqueues, struct node_queue_bw bwspec,
4979     struct node_queue_opt *opts)
4980 {
4981 	struct pf_altq		 pa, pb;
4982 	char			 qname[PF_QNAME_SIZE];
4983 	struct node_queue	*n;
4984 	struct node_queue_bw	 bw;
4985 	int			 errs = 0;
4986 
4987 	if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4988 		FREE_LIST(struct node_if, interfaces);
4989 		if (nqueues)
4990 			FREE_LIST(struct node_queue, nqueues);
4991 		return (0);
4992 	}
4993 
4994 	LOOP_THROUGH(struct node_if, interface, interfaces,
4995 		memcpy(&pa, a, sizeof(struct pf_altq));
4996 		if (strlcpy(pa.ifname, interface->ifname,
4997 		    sizeof(pa.ifname)) >= sizeof(pa.ifname))
4998 			errx(1, "expand_altq: strlcpy");
4999 
5000 		if (interface->not) {
5001 			yyerror("altq on ! <interface> is not supported");
5002 			errs++;
5003 		} else {
5004 			if (eval_pfaltq(pf, &pa, &bwspec, opts))
5005 				errs++;
5006 			else
5007 				if (pfctl_add_altq(pf, &pa))
5008 					errs++;
5009 
5010 			if (pf->opts & PF_OPT_VERBOSE) {
5011 				print_altq(&pf->paltq->altq, 0,
5012 				    &bwspec, opts);
5013 				if (nqueues && nqueues->tail) {
5014 					printf("queue { ");
5015 					LOOP_THROUGH(struct node_queue, queue,
5016 					    nqueues,
5017 						printf("%s ",
5018 						    queue->queue);
5019 					);
5020 					printf("}");
5021 				}
5022 				printf("\n");
5023 			}
5024 
5025 			if (pa.scheduler == ALTQT_CBQ ||
5026 			    pa.scheduler == ALTQT_HFSC) {
5027 				/* now create a root queue */
5028 				memset(&pb, 0, sizeof(struct pf_altq));
5029 				if (strlcpy(qname, "root_", sizeof(qname)) >=
5030 				    sizeof(qname))
5031 					errx(1, "expand_altq: strlcpy");
5032 				if (strlcat(qname, interface->ifname,
5033 				    sizeof(qname)) >= sizeof(qname))
5034 					errx(1, "expand_altq: strlcat");
5035 				if (strlcpy(pb.qname, qname,
5036 				    sizeof(pb.qname)) >= sizeof(pb.qname))
5037 					errx(1, "expand_altq: strlcpy");
5038 				if (strlcpy(pb.ifname, interface->ifname,
5039 				    sizeof(pb.ifname)) >= sizeof(pb.ifname))
5040 					errx(1, "expand_altq: strlcpy");
5041 				pb.qlimit = pa.qlimit;
5042 				pb.scheduler = pa.scheduler;
5043 				bw.bw_absolute = pa.ifbandwidth;
5044 				bw.bw_percent = 0;
5045 				if (eval_pfqueue(pf, &pb, &bw, opts))
5046 					errs++;
5047 				else
5048 					if (pfctl_add_altq(pf, &pb))
5049 						errs++;
5050 			}
5051 
5052 			LOOP_THROUGH(struct node_queue, queue, nqueues,
5053 				n = calloc(1, sizeof(struct node_queue));
5054 				if (n == NULL)
5055 					err(1, "expand_altq: calloc");
5056 				if (pa.scheduler == ALTQT_CBQ ||
5057 				    pa.scheduler == ALTQT_HFSC)
5058 					if (strlcpy(n->parent, qname,
5059 					    sizeof(n->parent)) >=
5060 					    sizeof(n->parent))
5061 						errx(1, "expand_altq: strlcpy");
5062 				if (strlcpy(n->queue, queue->queue,
5063 				    sizeof(n->queue)) >= sizeof(n->queue))
5064 					errx(1, "expand_altq: strlcpy");
5065 				if (strlcpy(n->ifname, interface->ifname,
5066 				    sizeof(n->ifname)) >= sizeof(n->ifname))
5067 					errx(1, "expand_altq: strlcpy");
5068 				n->scheduler = pa.scheduler;
5069 				n->next = NULL;
5070 				n->tail = n;
5071 				if (queues == NULL)
5072 					queues = n;
5073 				else {
5074 					queues->tail->next = n;
5075 					queues->tail = n;
5076 				}
5077 			);
5078 		}
5079 	);
5080 	FREE_LIST(struct node_if, interfaces);
5081 	if (nqueues)
5082 		FREE_LIST(struct node_queue, nqueues);
5083 
5084 	return (errs);
5085 }
5086 
5087 int
5088 expand_queue(struct pf_altq *a, struct node_if *interfaces,
5089     struct node_queue *nqueues, struct node_queue_bw bwspec,
5090     struct node_queue_opt *opts)
5091 {
5092 	struct node_queue	*n, *nq;
5093 	struct pf_altq		 pa;
5094 	u_int8_t		 found = 0;
5095 	u_int8_t		 errs = 0;
5096 
5097 	if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
5098 		FREE_LIST(struct node_queue, nqueues);
5099 		return (0);
5100 	}
5101 
5102 	if (queues == NULL) {
5103 		yyerror("queue %s has no parent", a->qname);
5104 		FREE_LIST(struct node_queue, nqueues);
5105 		return (1);
5106 	}
5107 
5108 	LOOP_THROUGH(struct node_if, interface, interfaces,
5109 		LOOP_THROUGH(struct node_queue, tqueue, queues,
5110 			if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
5111 			    (interface->ifname[0] == 0 ||
5112 			    (!interface->not && !strncmp(interface->ifname,
5113 			    tqueue->ifname, IFNAMSIZ)) ||
5114 			    (interface->not && strncmp(interface->ifname,
5115 			    tqueue->ifname, IFNAMSIZ)))) {
5116 				/* found ourself in queues */
5117 				found++;
5118 
5119 				memcpy(&pa, a, sizeof(struct pf_altq));
5120 
5121 				if (pa.scheduler != ALTQT_NONE &&
5122 				    pa.scheduler != tqueue->scheduler) {
5123 					yyerror("exactly one scheduler type "
5124 					    "per interface allowed");
5125 					return (1);
5126 				}
5127 				pa.scheduler = tqueue->scheduler;
5128 
5129 				/* scheduler dependent error checking */
5130 				switch (pa.scheduler) {
5131 				case ALTQT_PRIQ:
5132 					if (nqueues != NULL) {
5133 						yyerror("priq queues cannot "
5134 						    "have child queues");
5135 						return (1);
5136 					}
5137 					if (bwspec.bw_absolute > 0 ||
5138 					    bwspec.bw_percent < 100) {
5139 						yyerror("priq doesn't take "
5140 						    "bandwidth");
5141 						return (1);
5142 					}
5143 					break;
5144 				default:
5145 					break;
5146 				}
5147 
5148 				if (strlcpy(pa.ifname, tqueue->ifname,
5149 				    sizeof(pa.ifname)) >= sizeof(pa.ifname))
5150 					errx(1, "expand_queue: strlcpy");
5151 				if (strlcpy(pa.parent, tqueue->parent,
5152 				    sizeof(pa.parent)) >= sizeof(pa.parent))
5153 					errx(1, "expand_queue: strlcpy");
5154 
5155 				if (eval_pfqueue(pf, &pa, &bwspec, opts))
5156 					errs++;
5157 				else
5158 					if (pfctl_add_altq(pf, &pa))
5159 						errs++;
5160 
5161 				for (nq = nqueues; nq != NULL; nq = nq->next) {
5162 					if (!strcmp(a->qname, nq->queue)) {
5163 						yyerror("queue cannot have "
5164 						    "itself as child");
5165 						errs++;
5166 						continue;
5167 					}
5168 					n = calloc(1,
5169 					    sizeof(struct node_queue));
5170 					if (n == NULL)
5171 						err(1, "expand_queue: calloc");
5172 					if (strlcpy(n->parent, a->qname,
5173 					    sizeof(n->parent)) >=
5174 					    sizeof(n->parent))
5175 						errx(1, "expand_queue strlcpy");
5176 					if (strlcpy(n->queue, nq->queue,
5177 					    sizeof(n->queue)) >=
5178 					    sizeof(n->queue))
5179 						errx(1, "expand_queue strlcpy");
5180 					if (strlcpy(n->ifname, tqueue->ifname,
5181 					    sizeof(n->ifname)) >=
5182 					    sizeof(n->ifname))
5183 						errx(1, "expand_queue strlcpy");
5184 					n->scheduler = tqueue->scheduler;
5185 					n->next = NULL;
5186 					n->tail = n;
5187 					if (queues == NULL)
5188 						queues = n;
5189 					else {
5190 						queues->tail->next = n;
5191 						queues->tail = n;
5192 					}
5193 				}
5194 				if ((pf->opts & PF_OPT_VERBOSE) && (
5195 				    (found == 1 && interface->ifname[0] == 0) ||
5196 				    (found > 0 && interface->ifname[0] != 0))) {
5197 					print_queue(&pf->paltq->altq, 0,
5198 					    &bwspec, interface->ifname[0] != 0,
5199 					    opts);
5200 					if (nqueues && nqueues->tail) {
5201 						printf("{ ");
5202 						LOOP_THROUGH(struct node_queue,
5203 						    queue, nqueues,
5204 							printf("%s ",
5205 							    queue->queue);
5206 						);
5207 						printf("}");
5208 					}
5209 					printf("\n");
5210 				}
5211 			}
5212 		);
5213 	);
5214 
5215 	FREE_LIST(struct node_queue, nqueues);
5216 	FREE_LIST(struct node_if, interfaces);
5217 
5218 	if (!found) {
5219 		yyerror("queue %s has no parent", a->qname);
5220 		errs++;
5221 	}
5222 
5223 	if (errs)
5224 		return (1);
5225 	else
5226 		return (0);
5227 }
5228 
5229 void
5230 expand_rule(struct pf_rule *r,
5231     struct node_if *interfaces, struct node_host *rpool_hosts,
5232     struct node_proto *protos, struct node_os *src_oses,
5233     struct node_host *src_hosts, struct node_port *src_ports,
5234     struct node_host *dst_hosts, struct node_port *dst_ports,
5235     struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
5236     const char *anchor_call)
5237 {
5238 	sa_family_t		 af = r->af;
5239 	int			 added = 0, error = 0;
5240 	char			 ifname[IF_NAMESIZE];
5241 	char			 label[PF_RULE_LABEL_SIZE];
5242 	char			 tagname[PF_TAG_NAME_SIZE];
5243 	char			 match_tagname[PF_TAG_NAME_SIZE];
5244 	struct pf_pooladdr	*pa;
5245 	struct node_host	*h;
5246 	u_int8_t		 flags, flagset, keep_state;
5247 
5248 	if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label))
5249 		errx(1, "expand_rule: strlcpy");
5250 	if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
5251 		errx(1, "expand_rule: strlcpy");
5252 	if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
5253 	    sizeof(match_tagname))
5254 		errx(1, "expand_rule: strlcpy");
5255 	flags = r->flags;
5256 	flagset = r->flagset;
5257 	keep_state = r->keep_state;
5258 
5259 	LOOP_THROUGH(struct node_if, interface, interfaces,
5260 	LOOP_THROUGH(struct node_proto, proto, protos,
5261 	LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
5262 	LOOP_THROUGH(struct node_host, src_host, src_hosts,
5263 	LOOP_THROUGH(struct node_port, src_port, src_ports,
5264 	LOOP_THROUGH(struct node_os, src_os, src_oses,
5265 	LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
5266 	LOOP_THROUGH(struct node_port, dst_port, dst_ports,
5267 	LOOP_THROUGH(struct node_uid, uid, uids,
5268 	LOOP_THROUGH(struct node_gid, gid, gids,
5269 
5270 		r->af = af;
5271 		/* for link-local IPv6 address, interface must match up */
5272 		if ((r->af && src_host->af && r->af != src_host->af) ||
5273 		    (r->af && dst_host->af && r->af != dst_host->af) ||
5274 		    (src_host->af && dst_host->af &&
5275 		    src_host->af != dst_host->af) ||
5276 		    (src_host->ifindex && dst_host->ifindex &&
5277 		    src_host->ifindex != dst_host->ifindex) ||
5278 		    (src_host->ifindex && *interface->ifname &&
5279 		    src_host->ifindex != if_nametoindex(interface->ifname)) ||
5280 		    (dst_host->ifindex && *interface->ifname &&
5281 		    dst_host->ifindex != if_nametoindex(interface->ifname)))
5282 			continue;
5283 		if (!r->af && src_host->af)
5284 			r->af = src_host->af;
5285 		else if (!r->af && dst_host->af)
5286 			r->af = dst_host->af;
5287 
5288 		if (*interface->ifname)
5289 			strlcpy(r->ifname, interface->ifname,
5290 			    sizeof(r->ifname));
5291 		else if (if_indextoname(src_host->ifindex, ifname))
5292 			strlcpy(r->ifname, ifname, sizeof(r->ifname));
5293 		else if (if_indextoname(dst_host->ifindex, ifname))
5294 			strlcpy(r->ifname, ifname, sizeof(r->ifname));
5295 		else
5296 			memset(r->ifname, '\0', sizeof(r->ifname));
5297 
5298 		if (strlcpy(r->label, label, sizeof(r->label)) >=
5299 		    sizeof(r->label))
5300 			errx(1, "expand_rule: strlcpy");
5301 		if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
5302 		    sizeof(r->tagname))
5303 			errx(1, "expand_rule: strlcpy");
5304 		if (strlcpy(r->match_tagname, match_tagname,
5305 		    sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
5306 			errx(1, "expand_rule: strlcpy");
5307 		expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af,
5308 		    src_host, src_port, dst_host, dst_port, proto->proto);
5309 		expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af,
5310 		    src_host, src_port, dst_host, dst_port, proto->proto);
5311 		expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname,
5312 		    r->af, src_host, src_port, dst_host, dst_port,
5313 		    proto->proto);
5314 
5315 		error += check_netmask(src_host, r->af);
5316 		error += check_netmask(dst_host, r->af);
5317 
5318 		r->ifnot = interface->not;
5319 		r->proto = proto->proto;
5320 		r->src.addr = src_host->addr;
5321 		r->src.neg = src_host->not;
5322 		r->src.port[0] = src_port->port[0];
5323 		r->src.port[1] = src_port->port[1];
5324 		r->src.port_op = src_port->op;
5325 		r->dst.addr = dst_host->addr;
5326 		r->dst.neg = dst_host->not;
5327 		r->dst.port[0] = dst_port->port[0];
5328 		r->dst.port[1] = dst_port->port[1];
5329 		r->dst.port_op = dst_port->op;
5330 		r->uid.op = uid->op;
5331 		r->uid.uid[0] = uid->uid[0];
5332 		r->uid.uid[1] = uid->uid[1];
5333 		r->gid.op = gid->op;
5334 		r->gid.gid[0] = gid->gid[0];
5335 		r->gid.gid[1] = gid->gid[1];
5336 		r->type = icmp_type->type;
5337 		r->code = icmp_type->code;
5338 
5339 		if ((keep_state == PF_STATE_MODULATE ||
5340 		    keep_state == PF_STATE_SYNPROXY) &&
5341 		    r->proto && r->proto != IPPROTO_TCP)
5342 			r->keep_state = PF_STATE_NORMAL;
5343 		else
5344 			r->keep_state = keep_state;
5345 
5346 		if (r->proto && r->proto != IPPROTO_TCP) {
5347 			r->flags = 0;
5348 			r->flagset = 0;
5349 		} else {
5350 			r->flags = flags;
5351 			r->flagset = flagset;
5352 		}
5353 		if (icmp_type->proto && r->proto != icmp_type->proto) {
5354 			yyerror("icmp-type mismatch");
5355 			error++;
5356 		}
5357 
5358 		if (src_os && src_os->os) {
5359 			r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
5360 			if ((pf->opts & PF_OPT_VERBOSE2) &&
5361 			    r->os_fingerprint == PF_OSFP_NOMATCH)
5362 				fprintf(stderr,
5363 				    "warning: unknown '%s' OS fingerprint\n",
5364 				    src_os->os);
5365 		} else {
5366 			r->os_fingerprint = PF_OSFP_ANY;
5367 		}
5368 
5369 		TAILQ_INIT(&r->rpool.list);
5370 		for (h = rpool_hosts; h != NULL; h = h->next) {
5371 			pa = calloc(1, sizeof(struct pf_pooladdr));
5372 			if (pa == NULL)
5373 				err(1, "expand_rule: calloc");
5374 			pa->addr = h->addr;
5375 			if (h->ifname != NULL) {
5376 				if (strlcpy(pa->ifname, h->ifname,
5377 				    sizeof(pa->ifname)) >=
5378 				    sizeof(pa->ifname))
5379 					errx(1, "expand_rule: strlcpy");
5380 			} else
5381 				pa->ifname[0] = 0;
5382 			TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries);
5383 		}
5384 
5385 		if (rule_consistent(r, anchor_call[0]) < 0 || error)
5386 			yyerror("skipping rule due to errors");
5387 		else {
5388 			r->nr = pf->astack[pf->asd]->match++;
5389 			pfctl_add_rule(pf, r, anchor_call);
5390 			added++;
5391 		}
5392 
5393 	))))))))));
5394 
5395 	FREE_LIST(struct node_if, interfaces);
5396 	FREE_LIST(struct node_proto, protos);
5397 	FREE_LIST(struct node_host, src_hosts);
5398 	FREE_LIST(struct node_port, src_ports);
5399 	FREE_LIST(struct node_os, src_oses);
5400 	FREE_LIST(struct node_host, dst_hosts);
5401 	FREE_LIST(struct node_port, dst_ports);
5402 	FREE_LIST(struct node_uid, uids);
5403 	FREE_LIST(struct node_gid, gids);
5404 	FREE_LIST(struct node_icmp, icmp_types);
5405 	FREE_LIST(struct node_host, rpool_hosts);
5406 
5407 	if (!added)
5408 		yyerror("rule expands to no valid combination");
5409 }
5410 
5411 int
5412 expand_skip_interface(struct node_if *interfaces)
5413 {
5414 	int	errs = 0;
5415 
5416 	if (!interfaces || (!interfaces->next && !interfaces->not &&
5417 	    !strcmp(interfaces->ifname, "none"))) {
5418 		if (pf->opts & PF_OPT_VERBOSE)
5419 			printf("set skip on none\n");
5420 		errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
5421 		return (errs);
5422 	}
5423 
5424 	if (pf->opts & PF_OPT_VERBOSE)
5425 		printf("set skip on {");
5426 	LOOP_THROUGH(struct node_if, interface, interfaces,
5427 		if (pf->opts & PF_OPT_VERBOSE)
5428 			printf(" %s", interface->ifname);
5429 		if (interface->not) {
5430 			yyerror("skip on ! <interface> is not supported");
5431 			errs++;
5432 		} else
5433 			errs += pfctl_set_interface_flags(pf,
5434 			    interface->ifname, PFI_IFLAG_SKIP, 1);
5435 	);
5436 	if (pf->opts & PF_OPT_VERBOSE)
5437 		printf(" }\n");
5438 
5439 	FREE_LIST(struct node_if, interfaces);
5440 
5441 	if (errs)
5442 		return (1);
5443 	else
5444 		return (0);
5445 }
5446 
5447 #undef FREE_LIST
5448 #undef LOOP_THROUGH
5449 
5450 int
5451 check_rulestate(int desired_state)
5452 {
5453 	if (require_order && (rulestate > desired_state)) {
5454 		yyerror("Rules must be in order: options, normalization, "
5455 		    "queueing, translation, filtering");
5456 		return (1);
5457 	}
5458 	rulestate = desired_state;
5459 	return (0);
5460 }
5461 
5462 int
5463 kw_cmp(const void *k, const void *e)
5464 {
5465 	return (strcmp(k, ((const struct keywords *)e)->k_name));
5466 }
5467 
5468 int
5469 lookup(char *s)
5470 {
5471 	/* this has to be sorted always */
5472 	static const struct keywords keywords[] = {
5473 		{ "all",		ALL},
5474 		{ "allow-opts",		ALLOWOPTS},
5475 		{ "altq",		ALTQ},
5476 		{ "anchor",		ANCHOR},
5477 		{ "antispoof",		ANTISPOOF},
5478 		{ "any",		ANY},
5479 		{ "bandwidth",		BANDWIDTH},
5480 		{ "binat",		BINAT},
5481 		{ "binat-anchor",	BINATANCHOR},
5482 		{ "bitmask",		BITMASK},
5483 		{ "block",		BLOCK},
5484 		{ "block-policy",	BLOCKPOLICY},
5485 		{ "buckets",		BUCKETS},
5486 		{ "cbq",		CBQ},
5487 		{ "code",		CODE},
5488 		{ "codelq",		CODEL},
5489 		{ "crop",		FRAGCROP},
5490 		{ "debug",		DEBUG},
5491 		{ "divert-reply",	DIVERTREPLY},
5492 		{ "divert-to",		DIVERTTO},
5493 		{ "drop",		DROP},
5494 		{ "drop-ovl",		FRAGDROP},
5495 		{ "dup-to",		DUPTO},
5496 		{ "fail-policy",	FAILPOLICY},
5497 		{ "fairq",		FAIRQ},
5498 		{ "fastroute",		FASTROUTE},
5499 		{ "file",		FILENAME},
5500 		{ "fingerprints",	FINGERPRINTS},
5501 		{ "flags",		FLAGS},
5502 		{ "floating",		FLOATING},
5503 		{ "flush",		FLUSH},
5504 		{ "for",		FOR},
5505 		{ "fragment",		FRAGMENT},
5506 		{ "from",		FROM},
5507 		{ "global",		GLOBAL},
5508 		{ "group",		GROUP},
5509 		{ "hfsc",		HFSC},
5510 		{ "hogs",		HOGS},
5511 		{ "hostid",		HOSTID},
5512 		{ "icmp-type",		ICMPTYPE},
5513 		{ "icmp6-type",		ICMP6TYPE},
5514 		{ "if-bound",		IFBOUND},
5515 		{ "in",			IN},
5516 		{ "include",		INCLUDE},
5517 		{ "inet",		INET},
5518 		{ "inet6",		INET6},
5519 		{ "interval",		INTERVAL},
5520 		{ "keep",		KEEP},
5521 		{ "label",		LABEL},
5522 		{ "limit",		LIMIT},
5523 		{ "linkshare",		LINKSHARE},
5524 		{ "load",		LOAD},
5525 		{ "log",		LOG},
5526 		{ "loginterface",	LOGINTERFACE},
5527 		{ "max",		MAXIMUM},
5528 		{ "max-mss",		MAXMSS},
5529 		{ "max-src-conn",	MAXSRCCONN},
5530 		{ "max-src-conn-rate",	MAXSRCCONNRATE},
5531 		{ "max-src-nodes",	MAXSRCNODES},
5532 		{ "max-src-states",	MAXSRCSTATES},
5533 		{ "min-ttl",		MINTTL},
5534 		{ "modulate",		MODULATE},
5535 		{ "nat",		NAT},
5536 		{ "nat-anchor",		NATANCHOR},
5537 		{ "no",			NO},
5538 		{ "no-df",		NODF},
5539 		{ "no-route",		NOROUTE},
5540 		{ "no-sync",		NOSYNC},
5541 		{ "on",			ON},
5542 		{ "optimization",	OPTIMIZATION},
5543 		{ "os",			OS},
5544 		{ "out",		OUT},
5545 		{ "overload",		OVERLOAD},
5546 		{ "pass",		PASS},
5547 		{ "port",		PORT},
5548 		{ "prio",		PRIO},
5549 		{ "priority",		PRIORITY},
5550 		{ "priq",		PRIQ},
5551 		{ "probability",	PROBABILITY},
5552 		{ "proto",		PROTO},
5553 		{ "qlimit",		QLIMIT},
5554 		{ "queue",		QUEUE},
5555 		{ "quick",		QUICK},
5556 		{ "random",		RANDOM},
5557 		{ "random-id",		RANDOMID},
5558 		{ "rdr",		RDR},
5559 		{ "rdr-anchor",		RDRANCHOR},
5560 		{ "realtime",		REALTIME},
5561 		{ "reassemble",		REASSEMBLE},
5562 		{ "reply-to",		REPLYTO},
5563 		{ "require-order",	REQUIREORDER},
5564 		{ "return",		RETURN},
5565 		{ "return-icmp",	RETURNICMP},
5566 		{ "return-icmp6",	RETURNICMP6},
5567 		{ "return-rst",		RETURNRST},
5568 		{ "round-robin",	ROUNDROBIN},
5569 		{ "route",		ROUTE},
5570 		{ "route-to",		ROUTETO},
5571 		{ "rtable",		RTABLE},
5572 		{ "rule",		RULE},
5573 		{ "ruleset-optimization",	RULESET_OPTIMIZATION},
5574 		{ "scrub",		SCRUB},
5575 		{ "set",		SET},
5576 		{ "set-tos",		SETTOS},
5577 		{ "skip",		SKIP},
5578 		{ "sloppy",		SLOPPY},
5579 		{ "source-hash",	SOURCEHASH},
5580 		{ "source-track",	SOURCETRACK},
5581 		{ "state",		STATE},
5582 		{ "state-defaults",	STATEDEFAULTS},
5583 		{ "state-policy",	STATEPOLICY},
5584 		{ "static-port",	STATICPORT},
5585 		{ "sticky-address",	STICKYADDRESS},
5586 		{ "synproxy",		SYNPROXY},
5587 		{ "table",		TABLE},
5588 		{ "tag",		TAG},
5589 		{ "tagged",		TAGGED},
5590 		{ "target",		TARGET},
5591 		{ "tbrsize",		TBRSIZE},
5592 		{ "timeout",		TIMEOUT},
5593 		{ "to",			TO},
5594 		{ "tos",		TOS},
5595 		{ "ttl",		TTL},
5596 		{ "upperlimit",		UPPERLIMIT},
5597 		{ "urpf-failed",	URPFFAILED},
5598 		{ "user",		USER},
5599 	};
5600 	const struct keywords	*p;
5601 
5602 	p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
5603 	    sizeof(keywords[0]), kw_cmp);
5604 
5605 	if (p) {
5606 		if (debug > 1)
5607 			fprintf(stderr, "%s: %d\n", s, p->k_val);
5608 		return (p->k_val);
5609 	} else {
5610 		if (debug > 1)
5611 			fprintf(stderr, "string: %s\n", s);
5612 		return (STRING);
5613 	}
5614 }
5615 
5616 #define MAXPUSHBACK	128
5617 
5618 static char	*parsebuf;
5619 static int	 parseindex;
5620 static char	 pushback_buffer[MAXPUSHBACK];
5621 static int	 pushback_index = 0;
5622 
5623 int
5624 lgetc(int quotec)
5625 {
5626 	int		c, next;
5627 
5628 	if (parsebuf) {
5629 		/* Read character from the parsebuffer instead of input. */
5630 		if (parseindex >= 0) {
5631 			c = parsebuf[parseindex++];
5632 			if (c != '\0')
5633 				return (c);
5634 			parsebuf = NULL;
5635 		} else
5636 			parseindex++;
5637 	}
5638 
5639 	if (pushback_index)
5640 		return (pushback_buffer[--pushback_index]);
5641 
5642 	if (quotec) {
5643 		if ((c = getc(file->stream)) == EOF) {
5644 			yyerror("reached end of file while parsing quoted string");
5645 			if (popfile() == EOF)
5646 				return (EOF);
5647 			return (quotec);
5648 		}
5649 		return (c);
5650 	}
5651 
5652 	while ((c = getc(file->stream)) == '\\') {
5653 		next = getc(file->stream);
5654 		if (next != '\n') {
5655 			c = next;
5656 			break;
5657 		}
5658 		yylval.lineno = file->lineno;
5659 		file->lineno++;
5660 	}
5661 
5662 	while (c == EOF) {
5663 		if (popfile() == EOF)
5664 			return (EOF);
5665 		c = getc(file->stream);
5666 	}
5667 	return (c);
5668 }
5669 
5670 int
5671 lungetc(int c)
5672 {
5673 	if (c == EOF)
5674 		return (EOF);
5675 	if (parsebuf) {
5676 		parseindex--;
5677 		if (parseindex >= 0)
5678 			return (c);
5679 	}
5680 	if (pushback_index < MAXPUSHBACK-1)
5681 		return (pushback_buffer[pushback_index++] = c);
5682 	else
5683 		return (EOF);
5684 }
5685 
5686 int
5687 findeol(void)
5688 {
5689 	int	c;
5690 
5691 	parsebuf = NULL;
5692 
5693 	/* skip to either EOF or the first real EOL */
5694 	while (1) {
5695 		if (pushback_index)
5696 			c = pushback_buffer[--pushback_index];
5697 		else
5698 			c = lgetc(0);
5699 		if (c == '\n') {
5700 			file->lineno++;
5701 			break;
5702 		}
5703 		if (c == EOF)
5704 			break;
5705 	}
5706 	return (ERROR);
5707 }
5708 
5709 int
5710 yylex(void)
5711 {
5712 	char	 buf[8096];
5713 	char	*p, *val;
5714 	int	 quotec, next, c;
5715 	int	 token;
5716 
5717 top:
5718 	p = buf;
5719 	while ((c = lgetc(0)) == ' ' || c == '\t')
5720 		; /* nothing */
5721 
5722 	yylval.lineno = file->lineno;
5723 	if (c == '#')
5724 		while ((c = lgetc(0)) != '\n' && c != EOF)
5725 			; /* nothing */
5726 	if (c == '$' && parsebuf == NULL) {
5727 		while (1) {
5728 			if ((c = lgetc(0)) == EOF)
5729 				return (0);
5730 
5731 			if (p + 1 >= buf + sizeof(buf) - 1) {
5732 				yyerror("string too long");
5733 				return (findeol());
5734 			}
5735 			if (isalnum(c) || c == '_') {
5736 				*p++ = (char)c;
5737 				continue;
5738 			}
5739 			*p = '\0';
5740 			lungetc(c);
5741 			break;
5742 		}
5743 		val = symget(buf);
5744 		if (val == NULL) {
5745 			yyerror("macro '%s' not defined", buf);
5746 			return (findeol());
5747 		}
5748 		parsebuf = val;
5749 		parseindex = 0;
5750 		goto top;
5751 	}
5752 
5753 	switch (c) {
5754 	case '\'':
5755 	case '"':
5756 		quotec = c;
5757 		while (1) {
5758 			if ((c = lgetc(quotec)) == EOF)
5759 				return (0);
5760 			if (c == '\n') {
5761 				file->lineno++;
5762 				continue;
5763 			} else if (c == '\\') {
5764 				if ((next = lgetc(quotec)) == EOF)
5765 					return (0);
5766 				if (next == quotec || c == ' ' || c == '\t')
5767 					c = next;
5768 				else if (next == '\n')
5769 					continue;
5770 				else
5771 					lungetc(next);
5772 			} else if (c == quotec) {
5773 				*p = '\0';
5774 				break;
5775 			}
5776 			if (p + 1 >= buf + sizeof(buf) - 1) {
5777 				yyerror("string too long");
5778 				return (findeol());
5779 			}
5780 			*p++ = (char)c;
5781 		}
5782 		yylval.v.string = strdup(buf);
5783 		if (yylval.v.string == NULL)
5784 			err(1, "yylex: strdup");
5785 		return (STRING);
5786 	case '<':
5787 		next = lgetc(0);
5788 		if (next == '>') {
5789 			yylval.v.i = PF_OP_XRG;
5790 			return (PORTBINARY);
5791 		}
5792 		lungetc(next);
5793 		break;
5794 	case '>':
5795 		next = lgetc(0);
5796 		if (next == '<') {
5797 			yylval.v.i = PF_OP_IRG;
5798 			return (PORTBINARY);
5799 		}
5800 		lungetc(next);
5801 		break;
5802 	case '-':
5803 		next = lgetc(0);
5804 		if (next == '>')
5805 			return (ARROW);
5806 		lungetc(next);
5807 		break;
5808 	}
5809 
5810 #define allowed_to_end_number(x) \
5811 	(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
5812 
5813 	if (c == '-' || isdigit(c)) {
5814 		do {
5815 			*p++ = c;
5816 			if ((unsigned)(p-buf) >= sizeof(buf)) {
5817 				yyerror("string too long");
5818 				return (findeol());
5819 			}
5820 		} while ((c = lgetc(0)) != EOF && isdigit(c));
5821 		lungetc(c);
5822 		if (p == buf + 1 && buf[0] == '-')
5823 			goto nodigits;
5824 		if (c == EOF || allowed_to_end_number(c)) {
5825 			const char *errstr = NULL;
5826 
5827 			*p = '\0';
5828 			yylval.v.number = strtonum(buf, LLONG_MIN,
5829 			    LLONG_MAX, &errstr);
5830 			if (errstr) {
5831 				yyerror("\"%s\" invalid number: %s",
5832 				    buf, errstr);
5833 				return (findeol());
5834 			}
5835 			return (NUMBER);
5836 		} else {
5837 nodigits:
5838 			while (p > buf + 1)
5839 				lungetc(*--p);
5840 			c = *--p;
5841 			if (c == '-')
5842 				return (c);
5843 		}
5844 	}
5845 
5846 #define allowed_in_string(x) \
5847 	(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
5848 	x != '{' && x != '}' && x != '<' && x != '>' && \
5849 	x != '!' && x != '=' && x != '/' && x != '#' && \
5850 	x != ','))
5851 
5852 	if (isalnum(c) || c == ':' || c == '_') {
5853 		do {
5854 			*p++ = c;
5855 			if ((unsigned)(p-buf) >= sizeof(buf)) {
5856 				yyerror("string too long");
5857 				return (findeol());
5858 			}
5859 		} while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
5860 		lungetc(c);
5861 		*p = '\0';
5862 		if ((token = lookup(buf)) == STRING)
5863 			if ((yylval.v.string = strdup(buf)) == NULL)
5864 				err(1, "yylex: strdup");
5865 		return (token);
5866 	}
5867 	if (c == '\n') {
5868 		yylval.lineno = file->lineno;
5869 		file->lineno++;
5870 	}
5871 	if (c == EOF)
5872 		return (0);
5873 	return (c);
5874 }
5875 
5876 int
5877 check_file_secrecy(int fd, const char *fname)
5878 {
5879 	struct stat	st;
5880 
5881 	if (fstat(fd, &st)) {
5882 		warn("cannot stat %s", fname);
5883 		return (-1);
5884 	}
5885 	if (st.st_uid != 0 && st.st_uid != getuid()) {
5886 		warnx("%s: owner not root or current user", fname);
5887 		return (-1);
5888 	}
5889 	if (st.st_mode & (S_IRWXG | S_IRWXO)) {
5890 		warnx("%s: group/world readable/writeable", fname);
5891 		return (-1);
5892 	}
5893 	return (0);
5894 }
5895 
5896 struct file *
5897 pushfile(const char *name, int secret)
5898 {
5899 	struct file	*nfile;
5900 
5901 	if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
5902 	    (nfile->name = strdup(name)) == NULL) {
5903 		warn("malloc");
5904 		return (NULL);
5905 	}
5906 	if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
5907 		nfile->stream = stdin;
5908 		free(nfile->name);
5909 		if ((nfile->name = strdup("stdin")) == NULL) {
5910 			warn("strdup");
5911 			free(nfile);
5912 			return (NULL);
5913 		}
5914 	} else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
5915 		warn("%s", nfile->name);
5916 		free(nfile->name);
5917 		free(nfile);
5918 		return (NULL);
5919 	} else if (secret &&
5920 	    check_file_secrecy(fileno(nfile->stream), nfile->name)) {
5921 		fclose(nfile->stream);
5922 		free(nfile->name);
5923 		free(nfile);
5924 		return (NULL);
5925 	}
5926 	nfile->lineno = 1;
5927 	TAILQ_INSERT_TAIL(&files, nfile, entry);
5928 	return (nfile);
5929 }
5930 
5931 int
5932 popfile(void)
5933 {
5934 	struct file	*prev;
5935 
5936 	if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
5937 		prev->errors += file->errors;
5938 		TAILQ_REMOVE(&files, file, entry);
5939 		fclose(file->stream);
5940 		free(file->name);
5941 		free(file);
5942 		file = prev;
5943 		return (0);
5944 	}
5945 	return (EOF);
5946 }
5947 
5948 int
5949 parse_config(char *filename, struct pfctl *xpf)
5950 {
5951 	int		 errors = 0;
5952 	struct sym	*sym;
5953 
5954 	pf = xpf;
5955 	errors = 0;
5956 	rulestate = PFCTL_STATE_NONE;
5957 	returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
5958 	returnicmp6default =
5959 	    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
5960 	blockpolicy = PFRULE_DROP;
5961 	failpolicy = PFRULE_DROP;
5962 	require_order = 1;
5963 
5964 	if ((file = pushfile(filename, 0)) == NULL) {
5965 		warn("cannot open the main config file!");
5966 		return (-1);
5967 	}
5968 
5969 	yyparse();
5970 	errors = file->errors;
5971 	popfile();
5972 
5973 	/* Free macros and check which have not been used. */
5974 	while ((sym = TAILQ_FIRST(&symhead))) {
5975 		if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
5976 			fprintf(stderr, "warning: macro '%s' not "
5977 			    "used\n", sym->nam);
5978 		free(sym->nam);
5979 		free(sym->val);
5980 		TAILQ_REMOVE(&symhead, sym, entry);
5981 		free(sym);
5982 	}
5983 
5984 	return (errors ? -1 : 0);
5985 }
5986 
5987 int
5988 symset(const char *nam, const char *val, int persist)
5989 {
5990 	struct sym	*sym;
5991 
5992 	for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
5993 	    sym = TAILQ_NEXT(sym, entry))
5994 		;	/* nothing */
5995 
5996 	if (sym != NULL) {
5997 		if (sym->persist == 1)
5998 			return (0);
5999 		else {
6000 			free(sym->nam);
6001 			free(sym->val);
6002 			TAILQ_REMOVE(&symhead, sym, entry);
6003 			free(sym);
6004 		}
6005 	}
6006 	if ((sym = calloc(1, sizeof(*sym))) == NULL)
6007 		return (-1);
6008 
6009 	sym->nam = strdup(nam);
6010 	if (sym->nam == NULL) {
6011 		free(sym);
6012 		return (-1);
6013 	}
6014 	sym->val = strdup(val);
6015 	if (sym->val == NULL) {
6016 		free(sym->nam);
6017 		free(sym);
6018 		return (-1);
6019 	}
6020 	sym->used = 0;
6021 	sym->persist = persist;
6022 	TAILQ_INSERT_TAIL(&symhead, sym, entry);
6023 	return (0);
6024 }
6025 
6026 int
6027 pfctl_cmdline_symset(char *s)
6028 {
6029 	char	*sym, *val;
6030 	int	 ret;
6031 
6032 	if ((val = strrchr(s, '=')) == NULL)
6033 		return (-1);
6034 
6035 	if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
6036 		err(1, "pfctl_cmdline_symset: malloc");
6037 
6038 	strlcpy(sym, s, strlen(s) - strlen(val) + 1);
6039 
6040 	ret = symset(sym, val + 1, 1);
6041 	free(sym);
6042 
6043 	return (ret);
6044 }
6045 
6046 char *
6047 symget(const char *nam)
6048 {
6049 	struct sym	*sym;
6050 
6051 	TAILQ_FOREACH(sym, &symhead, entry)
6052 		if (strcmp(nam, sym->nam) == 0) {
6053 			sym->used = 1;
6054 			return (sym->val);
6055 		}
6056 	return (NULL);
6057 }
6058 
6059 void
6060 mv_rules(struct pf_ruleset *src, struct pf_ruleset *dst)
6061 {
6062 	int i;
6063 	struct pf_rule *r;
6064 
6065 	for (i = 0; i < PF_RULESET_MAX; ++i) {
6066 		while ((r = TAILQ_FIRST(src->rules[i].active.ptr))
6067 		    != NULL) {
6068 			TAILQ_REMOVE(src->rules[i].active.ptr, r, entries);
6069 			TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries);
6070 			dst->anchor->match++;
6071 		}
6072 		src->anchor->match = 0;
6073 		while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr))
6074 		    != NULL) {
6075 			TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries);
6076 			TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr,
6077 				r, entries);
6078 		}
6079 	}
6080 }
6081 
6082 void
6083 decide_address_family(struct node_host *n, sa_family_t *af)
6084 {
6085 	if (*af != 0 || n == NULL)
6086 		return;
6087 	*af = n->af;
6088 	while ((n = n->next) != NULL) {
6089 		if (n->af != *af) {
6090 			*af = 0;
6091 			return;
6092 		}
6093 	}
6094 }
6095 
6096 void
6097 remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
6098 {
6099 	struct node_host	*n = *nh, *prev = NULL;
6100 
6101 	while (n != NULL) {
6102 		if (*af && n->af && n->af != *af) {
6103 			/* unlink and free n */
6104 			struct node_host *next = n->next;
6105 
6106 			/* adjust tail pointer */
6107 			if (n == (*nh)->tail)
6108 				(*nh)->tail = prev;
6109 			/* adjust previous node's next pointer */
6110 			if (prev == NULL)
6111 				*nh = next;
6112 			else
6113 				prev->next = next;
6114 			/* free node */
6115 			if (n->ifname != NULL)
6116 				free(n->ifname);
6117 			free(n);
6118 			n = next;
6119 		} else {
6120 			if (n->af && !*af)
6121 				*af = n->af;
6122 			prev = n;
6123 			n = n->next;
6124 		}
6125 	}
6126 }
6127 
6128 int
6129 invalid_redirect(struct node_host *nh, sa_family_t af)
6130 {
6131 	if (!af) {
6132 		struct node_host *n;
6133 
6134 		/* tables and dyniftl are ok without an address family */
6135 		for (n = nh; n != NULL; n = n->next) {
6136 			if (n->addr.type != PF_ADDR_TABLE &&
6137 			    n->addr.type != PF_ADDR_DYNIFTL) {
6138 				yyerror("address family not given and "
6139 				    "translation address expands to multiple "
6140 				    "address families");
6141 				return (1);
6142 			}
6143 		}
6144 	}
6145 	if (nh == NULL) {
6146 		yyerror("no translation address with matching address family "
6147 		    "found.");
6148 		return (1);
6149 	}
6150 	return (0);
6151 }
6152 
6153 int
6154 atoul(char *s, u_long *ulvalp)
6155 {
6156 	u_long	 ulval;
6157 	char	*ep;
6158 
6159 	errno = 0;
6160 	ulval = strtoul(s, &ep, 0);
6161 	if (s[0] == '\0' || *ep != '\0')
6162 		return (-1);
6163 	if (errno == ERANGE && ulval == ULONG_MAX)
6164 		return (-1);
6165 	*ulvalp = ulval;
6166 	return (0);
6167 }
6168 
6169 int
6170 getservice(char *n)
6171 {
6172 	struct servent	*s;
6173 	u_long		 ulval;
6174 
6175 	if (atoul(n, &ulval) == 0) {
6176 		if (ulval > 65535) {
6177 			yyerror("illegal port value %lu", ulval);
6178 			return (-1);
6179 		}
6180 		return (htons(ulval));
6181 	} else {
6182 		s = getservbyname(n, "tcp");
6183 		if (s == NULL)
6184 			s = getservbyname(n, "udp");
6185 		if (s == NULL) {
6186 			yyerror("unknown port %s", n);
6187 			return (-1);
6188 		}
6189 		return (s->s_port);
6190 	}
6191 }
6192 
6193 int
6194 rule_label(struct pf_rule *r, char *s)
6195 {
6196 	if (s) {
6197 		if (strlcpy(r->label, s, sizeof(r->label)) >=
6198 		    sizeof(r->label)) {
6199 			yyerror("rule label too long (max %d chars)",
6200 			    sizeof(r->label)-1);
6201 			return (-1);
6202 		}
6203 	}
6204 	return (0);
6205 }
6206 
6207 u_int16_t
6208 parseicmpspec(char *w, sa_family_t af)
6209 {
6210 	const struct icmpcodeent	*p;
6211 	u_long				 ulval;
6212 	u_int8_t			 icmptype;
6213 
6214 	if (af == AF_INET)
6215 		icmptype = returnicmpdefault >> 8;
6216 	else
6217 		icmptype = returnicmp6default >> 8;
6218 
6219 	if (atoul(w, &ulval) == -1) {
6220 		if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
6221 			yyerror("unknown icmp code %s", w);
6222 			return (0);
6223 		}
6224 		ulval = p->code;
6225 	}
6226 	if (ulval > 255) {
6227 		yyerror("invalid icmp code %lu", ulval);
6228 		return (0);
6229 	}
6230 	return (icmptype << 8 | ulval);
6231 }
6232 
6233 int
6234 parseport(char *port, struct range *r, int extensions)
6235 {
6236 	char	*p = strchr(port, ':');
6237 
6238 	if (p == NULL) {
6239 		if ((r->a = getservice(port)) == -1)
6240 			return (-1);
6241 		r->b = 0;
6242 		r->t = PF_OP_NONE;
6243 		return (0);
6244 	}
6245 	if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
6246 		*p = 0;
6247 		if ((r->a = getservice(port)) == -1)
6248 			return (-1);
6249 		r->b = 0;
6250 		r->t = PF_OP_IRG;
6251 		return (0);
6252 	}
6253 	if ((extensions & PPORT_RANGE)) {
6254 		*p++ = 0;
6255 		if ((r->a = getservice(port)) == -1 ||
6256 		    (r->b = getservice(p)) == -1)
6257 			return (-1);
6258 		if (r->a == r->b) {
6259 			r->b = 0;
6260 			r->t = PF_OP_NONE;
6261 		} else
6262 			r->t = PF_OP_RRG;
6263 		return (0);
6264 	}
6265 	return (-1);
6266 }
6267 
6268 int
6269 pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
6270 {
6271 	struct loadanchors	*la;
6272 
6273 	TAILQ_FOREACH(la, &loadanchorshead, entries) {
6274 		if (pf->opts & PF_OPT_VERBOSE)
6275 			fprintf(stderr, "\nLoading anchor %s from %s\n",
6276 			    la->anchorname, la->filename);
6277 		if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
6278 		    la->anchorname, trans) == -1)
6279 			return (-1);
6280 	}
6281 
6282 	return (0);
6283 }
6284 
6285 int
6286 kw_casecmp(const void *k, const void *e)
6287 {
6288 	return (strcasecmp(k, ((const struct keywords *)e)->k_name));
6289 }
6290 
6291 int
6292 map_tos(char *s, int *val)
6293 {
6294 	/* DiffServ Codepoints and other TOS mappings */
6295 	const struct keywords	 toswords[] = {
6296 		{ "af11",		IPTOS_DSCP_AF11 },
6297 		{ "af12",		IPTOS_DSCP_AF12 },
6298 		{ "af13",		IPTOS_DSCP_AF13 },
6299 		{ "af21",		IPTOS_DSCP_AF21 },
6300 		{ "af22",		IPTOS_DSCP_AF22 },
6301 		{ "af23",		IPTOS_DSCP_AF23 },
6302 		{ "af31",		IPTOS_DSCP_AF31 },
6303 		{ "af32",		IPTOS_DSCP_AF32 },
6304 		{ "af33",		IPTOS_DSCP_AF33 },
6305 		{ "af41",		IPTOS_DSCP_AF41 },
6306 		{ "af42",		IPTOS_DSCP_AF42 },
6307 		{ "af43",		IPTOS_DSCP_AF43 },
6308 		{ "critical",		IPTOS_PREC_CRITIC_ECP },
6309 		{ "cs0",		IPTOS_DSCP_CS0 },
6310 		{ "cs1",		IPTOS_DSCP_CS1 },
6311 		{ "cs2",		IPTOS_DSCP_CS2 },
6312 		{ "cs3",		IPTOS_DSCP_CS3 },
6313 		{ "cs4",		IPTOS_DSCP_CS4 },
6314 		{ "cs5",		IPTOS_DSCP_CS5 },
6315 		{ "cs6",		IPTOS_DSCP_CS6 },
6316 		{ "cs7",		IPTOS_DSCP_CS7 },
6317 		{ "ef",			IPTOS_DSCP_EF },
6318 		{ "inetcontrol",	IPTOS_PREC_INTERNETCONTROL },
6319 		{ "lowdelay",		IPTOS_LOWDELAY },
6320 		{ "netcontrol",		IPTOS_PREC_NETCONTROL },
6321 		{ "reliability",	IPTOS_RELIABILITY },
6322 		{ "throughput",		IPTOS_THROUGHPUT }
6323 	};
6324 	const struct keywords	*p;
6325 
6326 	p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]),
6327 	    sizeof(toswords[0]), kw_casecmp);
6328 
6329 	if (p) {
6330 		*val = p->k_val;
6331 		return (1);
6332 	}
6333 	return (0);
6334 }
6335 
6336 int
6337 rt_tableid_max(void)
6338 {
6339 #ifdef __FreeBSD__
6340 	int fibs;
6341 	size_t l = sizeof(fibs);
6342 
6343         if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1)
6344 		fibs = 16;	/* XXX RT_MAXFIBS, at least limit it some. */
6345 	/*
6346 	 * As the OpenBSD code only compares > and not >= we need to adjust
6347 	 * here given we only accept values of 0..n and want to avoid #ifdefs
6348 	 * in the grammar.
6349 	 */
6350 	return (fibs - 1);
6351 #else
6352 	return (RT_TABLEID_MAX);
6353 #endif
6354 }
6355