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: stable/11/sbin/pfctl/parse.y 344020 2019-02-11 19:08:03Z kp $");
34
35#include <sys/types.h>
36#include <sys/socket.h>
37#include <sys/stat.h>
38#ifdef __FreeBSD__
39#include <sys/sysctl.h>
40#endif
41#include <net/if.h>
42#include <netinet/in.h>
43#include <netinet/in_systm.h>
44#include <netinet/ip.h>
45#include <netinet/ip_icmp.h>
46#include <netinet/icmp6.h>
47#include <net/pfvar.h>
48#include <arpa/inet.h>
49#include <net/altq/altq.h>
50#include <net/altq/altq_cbq.h>
51#include <net/altq/altq_codel.h>
52#include <net/altq/altq_priq.h>
53#include <net/altq/altq_hfsc.h>
54#include <net/altq/altq_fairq.h>
55
56#include <stdio.h>
57#include <unistd.h>
58#include <stdlib.h>
59#include <netdb.h>
60#include <stdarg.h>
61#include <errno.h>
62#include <string.h>
63#include <ctype.h>
64#include <math.h>
65#include <err.h>
66#include <limits.h>
67#include <pwd.h>
68#include <grp.h>
69#include <md5.h>
70
71#include "pfctl_parser.h"
72#include "pfctl.h"
73
74static struct pfctl	*pf = NULL;
75static int		 debug = 0;
76static int		 rulestate = 0;
77static u_int16_t	 returnicmpdefault =
78			    (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
79static u_int16_t	 returnicmp6default =
80			    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
81static int		 blockpolicy = PFRULE_DROP;
82static int		 failpolicy = PFRULE_DROP;
83static int		 require_order = 1;
84static int		 default_statelock;
85
86TAILQ_HEAD(files, file)		 files = TAILQ_HEAD_INITIALIZER(files);
87static struct file {
88	TAILQ_ENTRY(file)	 entry;
89	FILE			*stream;
90	char			*name;
91	int			 lineno;
92	int			 errors;
93} *file;
94struct file	*pushfile(const char *, int);
95int		 popfile(void);
96int		 check_file_secrecy(int, const char *);
97int		 yyparse(void);
98int		 yylex(void);
99int		 yyerror(const char *, ...);
100int		 kw_cmp(const void *, const void *);
101int		 lookup(char *);
102int		 lgetc(int);
103int		 lungetc(int);
104int		 findeol(void);
105
106TAILQ_HEAD(symhead, sym)	 symhead = TAILQ_HEAD_INITIALIZER(symhead);
107struct sym {
108	TAILQ_ENTRY(sym)	 entry;
109	int			 used;
110	int			 persist;
111	char			*nam;
112	char			*val;
113};
114int		 symset(const char *, const char *, int);
115char		*symget(const char *);
116
117int		 atoul(char *, u_long *);
118
119enum {
120	PFCTL_STATE_NONE,
121	PFCTL_STATE_OPTION,
122	PFCTL_STATE_SCRUB,
123	PFCTL_STATE_QUEUE,
124	PFCTL_STATE_NAT,
125	PFCTL_STATE_FILTER
126};
127
128struct node_proto {
129	u_int8_t		 proto;
130	struct node_proto	*next;
131	struct node_proto	*tail;
132};
133
134struct node_port {
135	u_int16_t		 port[2];
136	u_int8_t		 op;
137	struct node_port	*next;
138	struct node_port	*tail;
139};
140
141struct node_uid {
142	uid_t			 uid[2];
143	u_int8_t		 op;
144	struct node_uid		*next;
145	struct node_uid		*tail;
146};
147
148struct node_gid {
149	gid_t			 gid[2];
150	u_int8_t		 op;
151	struct node_gid		*next;
152	struct node_gid		*tail;
153};
154
155struct node_icmp {
156	u_int8_t		 code;
157	u_int8_t		 type;
158	u_int8_t		 proto;
159	struct node_icmp	*next;
160	struct node_icmp	*tail;
161};
162
163enum	{ PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
164	    PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
165	    PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
166	    PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
167	    PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, };
168
169enum	{ PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
170
171struct node_state_opt {
172	int			 type;
173	union {
174		u_int32_t	 max_states;
175		u_int32_t	 max_src_states;
176		u_int32_t	 max_src_conn;
177		struct {
178			u_int32_t	limit;
179			u_int32_t	seconds;
180		}		 max_src_conn_rate;
181		struct {
182			u_int8_t	flush;
183			char		tblname[PF_TABLE_NAME_SIZE];
184		}		 overload;
185		u_int32_t	 max_src_nodes;
186		u_int8_t	 src_track;
187		u_int32_t	 statelock;
188		struct {
189			int		number;
190			u_int32_t	seconds;
191		}		 timeout;
192	}			 data;
193	struct node_state_opt	*next;
194	struct node_state_opt	*tail;
195};
196
197struct peer {
198	struct node_host	*host;
199	struct node_port	*port;
200};
201
202struct node_queue {
203	char			 queue[PF_QNAME_SIZE];
204	char			 parent[PF_QNAME_SIZE];
205	char			 ifname[IFNAMSIZ];
206	int			 scheduler;
207	struct node_queue	*next;
208	struct node_queue	*tail;
209}	*queues = NULL;
210
211struct node_qassign {
212	char		*qname;
213	char		*pqname;
214};
215
216struct filter_opts {
217	int			 marker;
218#define FOM_FLAGS	0x01
219#define FOM_ICMP	0x02
220#define FOM_TOS		0x04
221#define FOM_KEEP	0x08
222#define FOM_SRCTRACK	0x10
223#define FOM_SETPRIO	0x0400
224#define FOM_PRIO	0x2000
225	struct node_uid		*uid;
226	struct node_gid		*gid;
227	struct {
228		u_int8_t	 b1;
229		u_int8_t	 b2;
230		u_int16_t	 w;
231		u_int16_t	 w2;
232	} flags;
233	struct node_icmp	*icmpspec;
234	u_int32_t		 tos;
235	u_int32_t		 prob;
236	struct {
237		int			 action;
238		struct node_state_opt	*options;
239	} keep;
240	int			 fragment;
241	int			 allowopts;
242	char			*label;
243	struct node_qassign	 queues;
244	char			*tag;
245	char			*match_tag;
246	u_int8_t		 match_tag_not;
247	u_int			 rtableid;
248	u_int8_t		 prio;
249	u_int8_t		 set_prio[2];
250	struct {
251		struct node_host	*addr;
252		u_int16_t		port;
253	}			 divert;
254} filter_opts;
255
256struct antispoof_opts {
257	char			*label;
258	u_int			 rtableid;
259} antispoof_opts;
260
261struct scrub_opts {
262	int			 marker;
263#define SOM_MINTTL	0x01
264#define SOM_MAXMSS	0x02
265#define SOM_FRAGCACHE	0x04
266#define SOM_SETTOS	0x08
267	int			 nodf;
268	int			 minttl;
269	int			 maxmss;
270	int			 settos;
271	int			 fragcache;
272	int			 randomid;
273	int			 reassemble_tcp;
274	char			*match_tag;
275	u_int8_t		 match_tag_not;
276	u_int			 rtableid;
277} scrub_opts;
278
279struct queue_opts {
280	int			marker;
281#define QOM_BWSPEC	0x01
282#define QOM_SCHEDULER	0x02
283#define QOM_PRIORITY	0x04
284#define QOM_TBRSIZE	0x08
285#define QOM_QLIMIT	0x10
286	struct node_queue_bw	queue_bwspec;
287	struct node_queue_opt	scheduler;
288	int			priority;
289	int			tbrsize;
290	int			qlimit;
291} queue_opts;
292
293struct table_opts {
294	int			flags;
295	int			init_addr;
296	struct node_tinithead	init_nodes;
297} table_opts;
298
299struct pool_opts {
300	int			 marker;
301#define POM_TYPE		0x01
302#define POM_STICKYADDRESS	0x02
303	u_int8_t		 opts;
304	int			 type;
305	int			 staticport;
306	struct pf_poolhashkey	*key;
307
308} pool_opts;
309
310struct codel_opts	 codel_opts;
311struct node_hfsc_opts	 hfsc_opts;
312struct node_fairq_opts	 fairq_opts;
313struct node_state_opt	*keep_state_defaults = NULL;
314
315int		 disallow_table(struct node_host *, const char *);
316int		 disallow_urpf_failed(struct node_host *, const char *);
317int		 disallow_alias(struct node_host *, const char *);
318int		 rule_consistent(struct pf_rule *, int);
319int		 filter_consistent(struct pf_rule *, int);
320int		 nat_consistent(struct pf_rule *);
321int		 rdr_consistent(struct pf_rule *);
322int		 process_tabledef(char *, struct table_opts *);
323void		 expand_label_str(char *, size_t, const char *, const char *);
324void		 expand_label_if(const char *, char *, size_t, const char *);
325void		 expand_label_addr(const char *, char *, size_t, u_int8_t,
326		    struct node_host *);
327void		 expand_label_port(const char *, char *, size_t,
328		    struct node_port *);
329void		 expand_label_proto(const char *, char *, size_t, u_int8_t);
330void		 expand_label_nr(const char *, char *, size_t);
331void		 expand_label(char *, size_t, const char *, u_int8_t,
332		    struct node_host *, struct node_port *, struct node_host *,
333		    struct node_port *, u_int8_t);
334void		 expand_rule(struct pf_rule *, struct node_if *,
335		    struct node_host *, struct node_proto *, struct node_os *,
336		    struct node_host *, struct node_port *, struct node_host *,
337		    struct node_port *, struct node_uid *, struct node_gid *,
338		    struct node_icmp *, const char *);
339int		 expand_altq(struct pf_altq *, struct node_if *,
340		    struct node_queue *, struct node_queue_bw bwspec,
341		    struct node_queue_opt *);
342int		 expand_queue(struct pf_altq *, struct node_if *,
343		    struct node_queue *, struct node_queue_bw,
344		    struct node_queue_opt *);
345int		 expand_skip_interface(struct node_if *);
346
347int	 check_rulestate(int);
348int	 getservice(char *);
349int	 rule_label(struct pf_rule *, char *);
350int	 rt_tableid_max(void);
351
352void	 mv_rules(struct pf_ruleset *, struct pf_ruleset *);
353void	 decide_address_family(struct node_host *, sa_family_t *);
354void	 remove_invalid_hosts(struct node_host **, sa_family_t *);
355int	 invalid_redirect(struct node_host *, sa_family_t);
356u_int16_t parseicmpspec(char *, sa_family_t);
357
358TAILQ_HEAD(loadanchorshead, loadanchors)
359    loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
360
361struct loadanchors {
362	TAILQ_ENTRY(loadanchors)	 entries;
363	char				*anchorname;
364	char				*filename;
365};
366
367typedef struct {
368	union {
369		int64_t			 number;
370		double			 probability;
371		int			 i;
372		char			*string;
373		u_int			 rtableid;
374		struct {
375			u_int8_t	 b1;
376			u_int8_t	 b2;
377			u_int16_t	 w;
378			u_int16_t	 w2;
379		}			 b;
380		struct range {
381			int		 a;
382			int		 b;
383			int		 t;
384		}			 range;
385		struct node_if		*interface;
386		struct node_proto	*proto;
387		struct node_icmp	*icmp;
388		struct node_host	*host;
389		struct node_os		*os;
390		struct node_port	*port;
391		struct node_uid		*uid;
392		struct node_gid		*gid;
393		struct node_state_opt	*state_opt;
394		struct peer		 peer;
395		struct {
396			struct peer	 src, dst;
397			struct node_os	*src_os;
398		}			 fromto;
399		struct {
400			struct node_host	*host;
401			u_int8_t		 rt;
402			u_int8_t		 pool_opts;
403			sa_family_t		 af;
404			struct pf_poolhashkey	*key;
405		}			 route;
406		struct redirection {
407			struct node_host	*host;
408			struct range		 rport;
409		}			*redirection;
410		struct {
411			int			 action;
412			struct node_state_opt	*options;
413		}			 keep_state;
414		struct {
415			u_int8_t	 log;
416			u_int8_t	 logif;
417			u_int8_t	 quick;
418		}			 logquick;
419		struct {
420			int		 neg;
421			char		*name;
422		}			 tagged;
423		struct pf_poolhashkey	*hashkey;
424		struct node_queue	*queue;
425		struct node_queue_opt	 queue_options;
426		struct node_queue_bw	 queue_bwspec;
427		struct node_qassign	 qassign;
428		struct filter_opts	 filter_opts;
429		struct antispoof_opts	 antispoof_opts;
430		struct queue_opts	 queue_opts;
431		struct scrub_opts	 scrub_opts;
432		struct table_opts	 table_opts;
433		struct pool_opts	 pool_opts;
434		struct node_hfsc_opts	 hfsc_opts;
435		struct node_fairq_opts	 fairq_opts;
436		struct codel_opts	 codel_opts;
437	} v;
438	int lineno;
439} YYSTYPE;
440
441#define PPORT_RANGE	1
442#define PPORT_STAR	2
443int	parseport(char *, struct range *r, int);
444
445#define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
446	(!((addr).iflags & PFI_AFLAG_NOALIAS) ||		 \
447	!isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
448
449%}
450
451%token	PASS BLOCK SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
452%token	RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
453%token	ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
454%token	MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
455%token	NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
456%token	REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
457%token	SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY FAILPOLICY
458%token	RANDOMID REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
459%token	ANTISPOOF FOR INCLUDE
460%token	BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY
461%token	ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME
462%token	UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL
463%token	LOAD RULESET_OPTIMIZATION PRIO
464%token	STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
465%token	MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY
466%token	TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS
467%token	DIVERTTO DIVERTREPLY
468%token	<v.string>		STRING
469%token	<v.number>		NUMBER
470%token	<v.i>			PORTBINARY
471%type	<v.interface>		interface if_list if_item_not if_item
472%type	<v.number>		number icmptype icmp6type uid gid
473%type	<v.number>		tos not yesno
474%type	<v.probability>		probability
475%type	<v.i>			no dir af fragcache optimizer
476%type	<v.i>			sourcetrack flush unaryop statelock
477%type	<v.b>			action nataction natpasslog scrubaction
478%type	<v.b>			flags flag blockspec prio
479%type	<v.range>		portplain portstar portrange
480%type	<v.hashkey>		hashkey
481%type	<v.proto>		proto proto_list proto_item
482%type	<v.number>		protoval
483%type	<v.icmp>		icmpspec
484%type	<v.icmp>		icmp_list icmp_item
485%type	<v.icmp>		icmp6_list icmp6_item
486%type	<v.number>		reticmpspec reticmp6spec
487%type	<v.fromto>		fromto
488%type	<v.peer>		ipportspec from to
489%type	<v.host>		ipspec toipspec xhost host dynaddr host_list
490%type	<v.host>		redir_host_list redirspec
491%type	<v.host>		route_host route_host_list routespec
492%type	<v.os>			os xos os_list
493%type	<v.port>		portspec port_list port_item
494%type	<v.uid>			uids uid_list uid_item
495%type	<v.gid>			gids gid_list gid_item
496%type	<v.route>		route
497%type	<v.redirection>		redirection redirpool
498%type	<v.string>		label stringall tag anchorname
499%type	<v.string>		string varstring numberstring
500%type	<v.keep_state>		keep
501%type	<v.state_opt>		state_opt_spec state_opt_list state_opt_item
502%type	<v.logquick>		logquick quick log logopts logopt
503%type	<v.interface>		antispoof_ifspc antispoof_iflst antispoof_if
504%type	<v.qassign>		qname
505%type	<v.queue>		qassign qassign_list qassign_item
506%type	<v.queue_options>	scheduler
507%type	<v.number>		cbqflags_list cbqflags_item
508%type	<v.number>		priqflags_list priqflags_item
509%type	<v.hfsc_opts>		hfscopts_list hfscopts_item hfsc_opts
510%type	<v.fairq_opts>		fairqopts_list fairqopts_item fairq_opts
511%type	<v.codel_opts>		codelopts_list codelopts_item codel_opts
512%type	<v.queue_bwspec>	bandwidth
513%type	<v.filter_opts>		filter_opts filter_opt filter_opts_l
514%type	<v.filter_opts>		filter_sets filter_set filter_sets_l
515%type	<v.antispoof_opts>	antispoof_opts antispoof_opt antispoof_opts_l
516%type	<v.queue_opts>		queue_opts queue_opt queue_opts_l
517%type	<v.scrub_opts>		scrub_opts scrub_opt scrub_opts_l
518%type	<v.table_opts>		table_opts table_opt table_opts_l
519%type	<v.pool_opts>		pool_opts pool_opt pool_opts_l
520%type	<v.tagged>		tagged
521%type	<v.rtableid>		rtable
522%%
523
524ruleset		: /* empty */
525		| ruleset include '\n'
526		| ruleset '\n'
527		| ruleset option '\n'
528		| ruleset scrubrule '\n'
529		| ruleset natrule '\n'
530		| ruleset binatrule '\n'
531		| ruleset pfrule '\n'
532		| ruleset anchorrule '\n'
533		| ruleset loadrule '\n'
534		| ruleset altqif '\n'
535		| ruleset queuespec '\n'
536		| ruleset varset '\n'
537		| ruleset antispoof '\n'
538		| ruleset tabledef '\n'
539		| '{' fakeanchor '}' '\n';
540		| ruleset error '\n'		{ file->errors++; }
541		;
542
543include		: INCLUDE STRING		{
544			struct file	*nfile;
545
546			if ((nfile = pushfile($2, 0)) == NULL) {
547				yyerror("failed to include file %s", $2);
548				free($2);
549				YYERROR;
550			}
551			free($2);
552
553			file = nfile;
554			lungetc('\n');
555		}
556		;
557
558/*
559 * apply to previouslys specified rule: must be careful to note
560 * what that is: pf or nat or binat or rdr
561 */
562fakeanchor	: fakeanchor '\n'
563		| fakeanchor anchorrule '\n'
564		| fakeanchor binatrule '\n'
565		| fakeanchor natrule '\n'
566		| fakeanchor pfrule '\n'
567		| fakeanchor error '\n'
568		;
569
570optimizer	: string	{
571			if (!strcmp($1, "none"))
572				$$ = 0;
573			else if (!strcmp($1, "basic"))
574				$$ = PF_OPTIMIZE_BASIC;
575			else if (!strcmp($1, "profile"))
576				$$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
577			else {
578				yyerror("unknown ruleset-optimization %s", $1);
579				YYERROR;
580			}
581		}
582		;
583
584option		: SET OPTIMIZATION STRING		{
585			if (check_rulestate(PFCTL_STATE_OPTION)) {
586				free($3);
587				YYERROR;
588			}
589			if (pfctl_set_optimization(pf, $3) != 0) {
590				yyerror("unknown optimization %s", $3);
591				free($3);
592				YYERROR;
593			}
594			free($3);
595		}
596		| SET RULESET_OPTIMIZATION optimizer {
597			if (!(pf->opts & PF_OPT_OPTIMIZE)) {
598				pf->opts |= PF_OPT_OPTIMIZE;
599				pf->optimize = $3;
600			}
601		}
602		| SET TIMEOUT timeout_spec
603		| SET TIMEOUT '{' optnl timeout_list '}'
604		| SET LIMIT limit_spec
605		| SET LIMIT '{' optnl limit_list '}'
606		| SET LOGINTERFACE stringall		{
607			if (check_rulestate(PFCTL_STATE_OPTION)) {
608				free($3);
609				YYERROR;
610			}
611			if (pfctl_set_logif(pf, $3) != 0) {
612				yyerror("error setting loginterface %s", $3);
613				free($3);
614				YYERROR;
615			}
616			free($3);
617		}
618		| SET HOSTID number {
619			if ($3 == 0 || $3 > UINT_MAX) {
620				yyerror("hostid must be non-zero");
621				YYERROR;
622			}
623			if (pfctl_set_hostid(pf, $3) != 0) {
624				yyerror("error setting hostid %08x", $3);
625				YYERROR;
626			}
627		}
628		| SET BLOCKPOLICY DROP	{
629			if (pf->opts & PF_OPT_VERBOSE)
630				printf("set block-policy drop\n");
631			if (check_rulestate(PFCTL_STATE_OPTION))
632				YYERROR;
633			blockpolicy = PFRULE_DROP;
634		}
635		| SET BLOCKPOLICY RETURN {
636			if (pf->opts & PF_OPT_VERBOSE)
637				printf("set block-policy return\n");
638			if (check_rulestate(PFCTL_STATE_OPTION))
639				YYERROR;
640			blockpolicy = PFRULE_RETURN;
641		}
642		| SET FAILPOLICY DROP	{
643			if (pf->opts & PF_OPT_VERBOSE)
644				printf("set fail-policy drop\n");
645			if (check_rulestate(PFCTL_STATE_OPTION))
646				YYERROR;
647			failpolicy = PFRULE_DROP;
648		}
649		| SET FAILPOLICY RETURN {
650			if (pf->opts & PF_OPT_VERBOSE)
651				printf("set fail-policy return\n");
652			if (check_rulestate(PFCTL_STATE_OPTION))
653				YYERROR;
654			failpolicy = PFRULE_RETURN;
655		}
656		| SET REQUIREORDER yesno {
657			if (pf->opts & PF_OPT_VERBOSE)
658				printf("set require-order %s\n",
659				    $3 == 1 ? "yes" : "no");
660			require_order = $3;
661		}
662		| SET FINGERPRINTS STRING {
663			if (pf->opts & PF_OPT_VERBOSE)
664				printf("set fingerprints \"%s\"\n", $3);
665			if (check_rulestate(PFCTL_STATE_OPTION)) {
666				free($3);
667				YYERROR;
668			}
669			if (!pf->anchor->name[0]) {
670				if (pfctl_file_fingerprints(pf->dev,
671				    pf->opts, $3)) {
672					yyerror("error loading "
673					    "fingerprints %s", $3);
674					free($3);
675					YYERROR;
676				}
677			}
678			free($3);
679		}
680		| SET STATEPOLICY statelock {
681			if (pf->opts & PF_OPT_VERBOSE)
682				switch ($3) {
683				case 0:
684					printf("set state-policy floating\n");
685					break;
686				case PFRULE_IFBOUND:
687					printf("set state-policy if-bound\n");
688					break;
689				}
690			default_statelock = $3;
691		}
692		| SET DEBUG STRING {
693			if (check_rulestate(PFCTL_STATE_OPTION)) {
694				free($3);
695				YYERROR;
696			}
697			if (pfctl_set_debug(pf, $3) != 0) {
698				yyerror("error setting debuglevel %s", $3);
699				free($3);
700				YYERROR;
701			}
702			free($3);
703		}
704		| SET SKIP interface {
705			if (expand_skip_interface($3) != 0) {
706				yyerror("error setting skip interface(s)");
707				YYERROR;
708			}
709		}
710		| SET STATEDEFAULTS state_opt_list {
711			if (keep_state_defaults != NULL) {
712				yyerror("cannot redefine state-defaults");
713				YYERROR;
714			}
715			keep_state_defaults = $3;
716		}
717		;
718
719stringall	: STRING	{ $$ = $1; }
720		| ALL		{
721			if (($$ = strdup("all")) == NULL) {
722				err(1, "stringall: strdup");
723			}
724		}
725		;
726
727string		: STRING string				{
728			if (asprintf(&$$, "%s %s", $1, $2) == -1)
729				err(1, "string: asprintf");
730			free($1);
731			free($2);
732		}
733		| STRING
734		;
735
736varstring	: numberstring varstring 		{
737			if (asprintf(&$$, "%s %s", $1, $2) == -1)
738				err(1, "string: asprintf");
739			free($1);
740			free($2);
741		}
742		| numberstring
743		;
744
745numberstring	: NUMBER				{
746			char	*s;
747			if (asprintf(&s, "%lld", (long long)$1) == -1) {
748				yyerror("string: asprintf");
749				YYERROR;
750			}
751			$$ = s;
752		}
753		| STRING
754		;
755
756varset		: STRING '=' varstring	{
757			if (pf->opts & PF_OPT_VERBOSE)
758				printf("%s = \"%s\"\n", $1, $3);
759			if (symset($1, $3, 0) == -1)
760				err(1, "cannot store variable %s", $1);
761			free($1);
762			free($3);
763		}
764		;
765
766anchorname	: STRING			{ $$ = $1; }
767		| /* empty */			{ $$ = NULL; }
768		;
769
770pfa_anchorlist	: /* empty */
771		| pfa_anchorlist '\n'
772		| pfa_anchorlist pfrule '\n'
773		| pfa_anchorlist anchorrule '\n'
774		;
775
776pfa_anchor	: '{'
777		{
778			char ta[PF_ANCHOR_NAME_SIZE];
779			struct pf_ruleset *rs;
780
781			/* steping into a brace anchor */
782			pf->asd++;
783			pf->bn++;
784			pf->brace = 1;
785
786			/* create a holding ruleset in the root */
787			snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
788			rs = pf_find_or_create_ruleset(ta);
789			if (rs == NULL)
790				err(1, "pfa_anchor: pf_find_or_create_ruleset");
791			pf->astack[pf->asd] = rs->anchor;
792			pf->anchor = rs->anchor;
793		} '\n' pfa_anchorlist '}'
794		{
795			pf->alast = pf->anchor;
796			pf->asd--;
797			pf->anchor = pf->astack[pf->asd];
798		}
799		| /* empty */
800		;
801
802anchorrule	: ANCHOR anchorname dir quick interface af proto fromto
803		    filter_opts pfa_anchor
804		{
805			struct pf_rule	r;
806			struct node_proto	*proto;
807
808			if (check_rulestate(PFCTL_STATE_FILTER)) {
809				if ($2)
810					free($2);
811				YYERROR;
812			}
813
814			if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
815				free($2);
816				yyerror("anchor names beginning with '_' "
817				    "are reserved for internal use");
818				YYERROR;
819			}
820
821			memset(&r, 0, sizeof(r));
822			if (pf->astack[pf->asd + 1]) {
823				/* move inline rules into relative location */
824				pf_anchor_setup(&r,
825				    &pf->astack[pf->asd]->ruleset,
826				    $2 ? $2 : pf->alast->name);
827
828				if (r.anchor == NULL)
829					err(1, "anchorrule: unable to "
830					    "create ruleset");
831
832				if (pf->alast != r.anchor) {
833					if (r.anchor->match) {
834						yyerror("inline anchor '%s' "
835						    "already exists",
836						    r.anchor->name);
837						YYERROR;
838					}
839					mv_rules(&pf->alast->ruleset,
840					    &r.anchor->ruleset);
841				}
842				pf_remove_if_empty_ruleset(&pf->alast->ruleset);
843				pf->alast = r.anchor;
844			} else {
845				if (!$2) {
846					yyerror("anchors without explicit "
847					    "rules must specify a name");
848					YYERROR;
849				}
850			}
851			r.direction = $3;
852			r.quick = $4.quick;
853			r.af = $6;
854			r.prob = $9.prob;
855			r.rtableid = $9.rtableid;
856
857			if ($9.tag)
858				if (strlcpy(r.tagname, $9.tag,
859				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
860					yyerror("tag too long, max %u chars",
861					    PF_TAG_NAME_SIZE - 1);
862					YYERROR;
863				}
864			if ($9.match_tag)
865				if (strlcpy(r.match_tagname, $9.match_tag,
866				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
867					yyerror("tag too long, max %u chars",
868					    PF_TAG_NAME_SIZE - 1);
869					YYERROR;
870				}
871			r.match_tag_not = $9.match_tag_not;
872			if (rule_label(&r, $9.label))
873				YYERROR;
874			free($9.label);
875			r.flags = $9.flags.b1;
876			r.flagset = $9.flags.b2;
877			if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
878				yyerror("flags always false");
879				YYERROR;
880			}
881			if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
882				for (proto = $7; proto != NULL &&
883				    proto->proto != IPPROTO_TCP;
884				    proto = proto->next)
885					;	/* nothing */
886				if (proto == NULL && $7 != NULL) {
887					if ($9.flags.b1 || $9.flags.b2)
888						yyerror(
889						    "flags only apply to tcp");
890					if ($8.src_os)
891						yyerror(
892						    "OS fingerprinting only "
893						    "applies to tcp");
894					YYERROR;
895				}
896			}
897
898			r.tos = $9.tos;
899
900			if ($9.keep.action) {
901				yyerror("cannot specify state handling "
902				    "on anchors");
903				YYERROR;
904			}
905
906			if ($9.match_tag)
907				if (strlcpy(r.match_tagname, $9.match_tag,
908				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
909					yyerror("tag too long, max %u chars",
910					    PF_TAG_NAME_SIZE - 1);
911					YYERROR;
912				}
913			r.match_tag_not = $9.match_tag_not;
914			if ($9.marker & FOM_PRIO) {
915				if ($9.prio == 0)
916					r.prio = PF_PRIO_ZERO;
917				else
918					r.prio = $9.prio;
919			}
920			if ($9.marker & FOM_SETPRIO) {
921				r.set_prio[0] = $9.set_prio[0];
922				r.set_prio[1] = $9.set_prio[1];
923				r.scrub_flags |= PFSTATE_SETPRIO;
924			}
925
926			decide_address_family($8.src.host, &r.af);
927			decide_address_family($8.dst.host, &r.af);
928
929			expand_rule(&r, $5, NULL, $7, $8.src_os,
930			    $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
931			    $9.uid, $9.gid, $9.icmpspec,
932			    pf->astack[pf->asd + 1] ? pf->alast->name : $2);
933			free($2);
934			pf->astack[pf->asd + 1] = NULL;
935		}
936		| NATANCHOR string interface af proto fromto rtable {
937			struct pf_rule	r;
938
939			if (check_rulestate(PFCTL_STATE_NAT)) {
940				free($2);
941				YYERROR;
942			}
943
944			memset(&r, 0, sizeof(r));
945			r.action = PF_NAT;
946			r.af = $4;
947			r.rtableid = $7;
948
949			decide_address_family($6.src.host, &r.af);
950			decide_address_family($6.dst.host, &r.af);
951
952			expand_rule(&r, $3, NULL, $5, $6.src_os,
953			    $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
954			    0, 0, 0, $2);
955			free($2);
956		}
957		| RDRANCHOR string interface af proto fromto rtable {
958			struct pf_rule	r;
959
960			if (check_rulestate(PFCTL_STATE_NAT)) {
961				free($2);
962				YYERROR;
963			}
964
965			memset(&r, 0, sizeof(r));
966			r.action = PF_RDR;
967			r.af = $4;
968			r.rtableid = $7;
969
970			decide_address_family($6.src.host, &r.af);
971			decide_address_family($6.dst.host, &r.af);
972
973			if ($6.src.port != NULL) {
974				yyerror("source port parameter not supported"
975				    " in rdr-anchor");
976				YYERROR;
977			}
978			if ($6.dst.port != NULL) {
979				if ($6.dst.port->next != NULL) {
980					yyerror("destination port list "
981					    "expansion not supported in "
982					    "rdr-anchor");
983					YYERROR;
984				} else if ($6.dst.port->op != PF_OP_EQ) {
985					yyerror("destination port operators"
986					    " not supported in rdr-anchor");
987					YYERROR;
988				}
989				r.dst.port[0] = $6.dst.port->port[0];
990				r.dst.port[1] = $6.dst.port->port[1];
991				r.dst.port_op = $6.dst.port->op;
992			}
993
994			expand_rule(&r, $3, NULL, $5, $6.src_os,
995			    $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
996			    0, 0, 0, $2);
997			free($2);
998		}
999		| BINATANCHOR string interface af proto fromto rtable {
1000			struct pf_rule	r;
1001
1002			if (check_rulestate(PFCTL_STATE_NAT)) {
1003				free($2);
1004				YYERROR;
1005			}
1006
1007			memset(&r, 0, sizeof(r));
1008			r.action = PF_BINAT;
1009			r.af = $4;
1010			r.rtableid = $7;
1011			if ($5 != NULL) {
1012				if ($5->next != NULL) {
1013					yyerror("proto list expansion"
1014					    " not supported in binat-anchor");
1015					YYERROR;
1016				}
1017				r.proto = $5->proto;
1018				free($5);
1019			}
1020
1021			if ($6.src.host != NULL || $6.src.port != NULL ||
1022			    $6.dst.host != NULL || $6.dst.port != NULL) {
1023				yyerror("fromto parameter not supported"
1024				    " in binat-anchor");
1025				YYERROR;
1026			}
1027
1028			decide_address_family($6.src.host, &r.af);
1029			decide_address_family($6.dst.host, &r.af);
1030
1031			pfctl_add_rule(pf, &r, $2);
1032			free($2);
1033		}
1034		;
1035
1036loadrule	: LOAD ANCHOR string FROM string	{
1037			struct loadanchors	*loadanchor;
1038
1039			if (strlen(pf->anchor->name) + 1 +
1040			    strlen($3) >= MAXPATHLEN) {
1041				yyerror("anchorname %s too long, max %u\n",
1042				    $3, MAXPATHLEN - 1);
1043				free($3);
1044				YYERROR;
1045			}
1046			loadanchor = calloc(1, sizeof(struct loadanchors));
1047			if (loadanchor == NULL)
1048				err(1, "loadrule: calloc");
1049			if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
1050			    NULL)
1051				err(1, "loadrule: malloc");
1052			if (pf->anchor->name[0])
1053				snprintf(loadanchor->anchorname, MAXPATHLEN,
1054				    "%s/%s", pf->anchor->name, $3);
1055			else
1056				strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
1057			if ((loadanchor->filename = strdup($5)) == NULL)
1058				err(1, "loadrule: strdup");
1059
1060			TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
1061			    entries);
1062
1063			free($3);
1064			free($5);
1065		};
1066
1067scrubaction	: no SCRUB {
1068			$$.b2 = $$.w = 0;
1069			if ($1)
1070				$$.b1 = PF_NOSCRUB;
1071			else
1072				$$.b1 = PF_SCRUB;
1073		}
1074		;
1075
1076scrubrule	: scrubaction dir logquick interface af proto fromto scrub_opts
1077		{
1078			struct pf_rule	r;
1079
1080			if (check_rulestate(PFCTL_STATE_SCRUB))
1081				YYERROR;
1082
1083			memset(&r, 0, sizeof(r));
1084
1085			r.action = $1.b1;
1086			r.direction = $2;
1087
1088			r.log = $3.log;
1089			r.logif = $3.logif;
1090			if ($3.quick) {
1091				yyerror("scrub rules do not support 'quick'");
1092				YYERROR;
1093			}
1094
1095			r.af = $5;
1096			if ($8.nodf)
1097				r.rule_flag |= PFRULE_NODF;
1098			if ($8.randomid)
1099				r.rule_flag |= PFRULE_RANDOMID;
1100			if ($8.reassemble_tcp) {
1101				if (r.direction != PF_INOUT) {
1102					yyerror("reassemble tcp rules can not "
1103					    "specify direction");
1104					YYERROR;
1105				}
1106				r.rule_flag |= PFRULE_REASSEMBLE_TCP;
1107			}
1108			if ($8.minttl)
1109				r.min_ttl = $8.minttl;
1110			if ($8.maxmss)
1111				r.max_mss = $8.maxmss;
1112			if ($8.marker & SOM_SETTOS) {
1113				r.rule_flag |= PFRULE_SET_TOS;
1114				r.set_tos = $8.settos;
1115			}
1116			if ($8.fragcache)
1117				r.rule_flag |= $8.fragcache;
1118			if ($8.match_tag)
1119				if (strlcpy(r.match_tagname, $8.match_tag,
1120				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1121					yyerror("tag too long, max %u chars",
1122					    PF_TAG_NAME_SIZE - 1);
1123					YYERROR;
1124				}
1125			r.match_tag_not = $8.match_tag_not;
1126			r.rtableid = $8.rtableid;
1127
1128			expand_rule(&r, $4, NULL, $6, $7.src_os,
1129			    $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
1130			    NULL, NULL, NULL, "");
1131		}
1132		;
1133
1134scrub_opts	:	{
1135				bzero(&scrub_opts, sizeof scrub_opts);
1136				scrub_opts.rtableid = -1;
1137			}
1138		    scrub_opts_l
1139			{ $$ = scrub_opts; }
1140		| /* empty */ {
1141			bzero(&scrub_opts, sizeof scrub_opts);
1142			scrub_opts.rtableid = -1;
1143			$$ = scrub_opts;
1144		}
1145		;
1146
1147scrub_opts_l	: scrub_opts_l scrub_opt
1148		| scrub_opt
1149		;
1150
1151scrub_opt	: NODF	{
1152			if (scrub_opts.nodf) {
1153				yyerror("no-df cannot be respecified");
1154				YYERROR;
1155			}
1156			scrub_opts.nodf = 1;
1157		}
1158		| MINTTL NUMBER {
1159			if (scrub_opts.marker & SOM_MINTTL) {
1160				yyerror("min-ttl cannot be respecified");
1161				YYERROR;
1162			}
1163			if ($2 < 0 || $2 > 255) {
1164				yyerror("illegal min-ttl value %d", $2);
1165				YYERROR;
1166			}
1167			scrub_opts.marker |= SOM_MINTTL;
1168			scrub_opts.minttl = $2;
1169		}
1170		| MAXMSS NUMBER {
1171			if (scrub_opts.marker & SOM_MAXMSS) {
1172				yyerror("max-mss cannot be respecified");
1173				YYERROR;
1174			}
1175			if ($2 < 0 || $2 > 65535) {
1176				yyerror("illegal max-mss value %d", $2);
1177				YYERROR;
1178			}
1179			scrub_opts.marker |= SOM_MAXMSS;
1180			scrub_opts.maxmss = $2;
1181		}
1182		| SETTOS tos {
1183			if (scrub_opts.marker & SOM_SETTOS) {
1184				yyerror("set-tos cannot be respecified");
1185				YYERROR;
1186			}
1187			scrub_opts.marker |= SOM_SETTOS;
1188			scrub_opts.settos = $2;
1189		}
1190		| fragcache {
1191			if (scrub_opts.marker & SOM_FRAGCACHE) {
1192				yyerror("fragcache cannot be respecified");
1193				YYERROR;
1194			}
1195			scrub_opts.marker |= SOM_FRAGCACHE;
1196			scrub_opts.fragcache = $1;
1197		}
1198		| REASSEMBLE STRING {
1199			if (strcasecmp($2, "tcp") != 0) {
1200				yyerror("scrub reassemble supports only tcp, "
1201				    "not '%s'", $2);
1202				free($2);
1203				YYERROR;
1204			}
1205			free($2);
1206			if (scrub_opts.reassemble_tcp) {
1207				yyerror("reassemble tcp cannot be respecified");
1208				YYERROR;
1209			}
1210			scrub_opts.reassemble_tcp = 1;
1211		}
1212		| RANDOMID {
1213			if (scrub_opts.randomid) {
1214				yyerror("random-id cannot be respecified");
1215				YYERROR;
1216			}
1217			scrub_opts.randomid = 1;
1218		}
1219		| RTABLE NUMBER				{
1220			if ($2 < 0 || $2 > rt_tableid_max()) {
1221				yyerror("invalid rtable id");
1222				YYERROR;
1223			}
1224			scrub_opts.rtableid = $2;
1225		}
1226		| not TAGGED string			{
1227			scrub_opts.match_tag = $3;
1228			scrub_opts.match_tag_not = $1;
1229		}
1230		;
1231
1232fragcache	: FRAGMENT REASSEMBLE	{ $$ = 0; /* default */ }
1233		| FRAGMENT FRAGCROP	{ $$ = 0; }
1234		| FRAGMENT FRAGDROP	{ $$ = 0; }
1235		;
1236
1237antispoof	: ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1238			struct pf_rule		 r;
1239			struct node_host	*h = NULL, *hh;
1240			struct node_if		*i, *j;
1241
1242			if (check_rulestate(PFCTL_STATE_FILTER))
1243				YYERROR;
1244
1245			for (i = $3; i; i = i->next) {
1246				bzero(&r, sizeof(r));
1247
1248				r.action = PF_DROP;
1249				r.direction = PF_IN;
1250				r.log = $2.log;
1251				r.logif = $2.logif;
1252				r.quick = $2.quick;
1253				r.af = $4;
1254				if (rule_label(&r, $5.label))
1255					YYERROR;
1256				r.rtableid = $5.rtableid;
1257				j = calloc(1, sizeof(struct node_if));
1258				if (j == NULL)
1259					err(1, "antispoof: calloc");
1260				if (strlcpy(j->ifname, i->ifname,
1261				    sizeof(j->ifname)) >= sizeof(j->ifname)) {
1262					free(j);
1263					yyerror("interface name too long");
1264					YYERROR;
1265				}
1266				j->not = 1;
1267				if (i->dynamic) {
1268					h = calloc(1, sizeof(*h));
1269					if (h == NULL)
1270						err(1, "address: calloc");
1271					h->addr.type = PF_ADDR_DYNIFTL;
1272					set_ipmask(h, 128);
1273					if (strlcpy(h->addr.v.ifname, i->ifname,
1274					    sizeof(h->addr.v.ifname)) >=
1275					    sizeof(h->addr.v.ifname)) {
1276						free(h);
1277						yyerror(
1278						    "interface name too long");
1279						YYERROR;
1280					}
1281					hh = malloc(sizeof(*hh));
1282					if (hh == NULL)
1283						 err(1, "address: malloc");
1284					bcopy(h, hh, sizeof(*hh));
1285					h->addr.iflags = PFI_AFLAG_NETWORK;
1286				} else {
1287					h = ifa_lookup(j->ifname,
1288					    PFI_AFLAG_NETWORK);
1289					hh = NULL;
1290				}
1291
1292				if (h != NULL)
1293					expand_rule(&r, j, NULL, NULL, NULL, h,
1294					    NULL, NULL, NULL, NULL, NULL,
1295					    NULL, "");
1296
1297				if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1298					bzero(&r, sizeof(r));
1299
1300					r.action = PF_DROP;
1301					r.direction = PF_IN;
1302					r.log = $2.log;
1303					r.logif = $2.logif;
1304					r.quick = $2.quick;
1305					r.af = $4;
1306					if (rule_label(&r, $5.label))
1307						YYERROR;
1308					r.rtableid = $5.rtableid;
1309					if (hh != NULL)
1310						h = hh;
1311					else
1312						h = ifa_lookup(i->ifname, 0);
1313					if (h != NULL)
1314						expand_rule(&r, NULL, NULL,
1315						    NULL, NULL, h, NULL, NULL,
1316						    NULL, NULL, NULL, NULL, "");
1317				} else
1318					free(hh);
1319			}
1320			free($5.label);
1321		}
1322		;
1323
1324antispoof_ifspc	: FOR antispoof_if			{ $$ = $2; }
1325		| FOR '{' optnl antispoof_iflst '}'	{ $$ = $4; }
1326		;
1327
1328antispoof_iflst	: antispoof_if optnl			{ $$ = $1; }
1329		| antispoof_iflst comma antispoof_if optnl {
1330			$1->tail->next = $3;
1331			$1->tail = $3;
1332			$$ = $1;
1333		}
1334		;
1335
1336antispoof_if	: if_item				{ $$ = $1; }
1337		| '(' if_item ')'			{
1338			$2->dynamic = 1;
1339			$$ = $2;
1340		}
1341		;
1342
1343antispoof_opts	:	{
1344				bzero(&antispoof_opts, sizeof antispoof_opts);
1345				antispoof_opts.rtableid = -1;
1346			}
1347		    antispoof_opts_l
1348			{ $$ = antispoof_opts; }
1349		| /* empty */	{
1350			bzero(&antispoof_opts, sizeof antispoof_opts);
1351			antispoof_opts.rtableid = -1;
1352			$$ = antispoof_opts;
1353		}
1354		;
1355
1356antispoof_opts_l	: antispoof_opts_l antispoof_opt
1357			| antispoof_opt
1358			;
1359
1360antispoof_opt	: label	{
1361			if (antispoof_opts.label) {
1362				yyerror("label cannot be redefined");
1363				YYERROR;
1364			}
1365			antispoof_opts.label = $1;
1366		}
1367		| RTABLE NUMBER				{
1368			if ($2 < 0 || $2 > rt_tableid_max()) {
1369				yyerror("invalid rtable id");
1370				YYERROR;
1371			}
1372			antispoof_opts.rtableid = $2;
1373		}
1374		;
1375
1376not		: '!'		{ $$ = 1; }
1377		| /* empty */	{ $$ = 0; }
1378		;
1379
1380tabledef	: TABLE '<' STRING '>' table_opts {
1381			struct node_host	 *h, *nh;
1382			struct node_tinit	 *ti, *nti;
1383
1384			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1385				yyerror("table name too long, max %d chars",
1386				    PF_TABLE_NAME_SIZE - 1);
1387				free($3);
1388				YYERROR;
1389			}
1390			if (pf->loadopt & PFCTL_FLAG_TABLE)
1391				if (process_tabledef($3, &$5)) {
1392					free($3);
1393					YYERROR;
1394				}
1395			free($3);
1396			for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1397			    ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1398				if (ti->file)
1399					free(ti->file);
1400				for (h = ti->host; h != NULL; h = nh) {
1401					nh = h->next;
1402					free(h);
1403				}
1404				nti = SIMPLEQ_NEXT(ti, entries);
1405				free(ti);
1406			}
1407		}
1408		;
1409
1410table_opts	:	{
1411			bzero(&table_opts, sizeof table_opts);
1412			SIMPLEQ_INIT(&table_opts.init_nodes);
1413		}
1414		    table_opts_l
1415			{ $$ = table_opts; }
1416		| /* empty */
1417			{
1418			bzero(&table_opts, sizeof table_opts);
1419			SIMPLEQ_INIT(&table_opts.init_nodes);
1420			$$ = table_opts;
1421		}
1422		;
1423
1424table_opts_l	: table_opts_l table_opt
1425		| table_opt
1426		;
1427
1428table_opt	: STRING		{
1429			if (!strcmp($1, "const"))
1430				table_opts.flags |= PFR_TFLAG_CONST;
1431			else if (!strcmp($1, "persist"))
1432				table_opts.flags |= PFR_TFLAG_PERSIST;
1433			else if (!strcmp($1, "counters"))
1434				table_opts.flags |= PFR_TFLAG_COUNTERS;
1435			else {
1436				yyerror("invalid table option '%s'", $1);
1437				free($1);
1438				YYERROR;
1439			}
1440			free($1);
1441		}
1442		| '{' optnl '}'		{ table_opts.init_addr = 1; }
1443		| '{' optnl host_list '}'	{
1444			struct node_host	*n;
1445			struct node_tinit	*ti;
1446
1447			for (n = $3; n != NULL; n = n->next) {
1448				switch (n->addr.type) {
1449				case PF_ADDR_ADDRMASK:
1450					continue; /* ok */
1451				case PF_ADDR_RANGE:
1452					yyerror("address ranges are not "
1453					    "permitted inside tables");
1454					break;
1455				case PF_ADDR_DYNIFTL:
1456					yyerror("dynamic addresses are not "
1457					    "permitted inside tables");
1458					break;
1459				case PF_ADDR_TABLE:
1460					yyerror("tables cannot contain tables");
1461					break;
1462				case PF_ADDR_NOROUTE:
1463					yyerror("\"no-route\" is not permitted "
1464					    "inside tables");
1465					break;
1466				case PF_ADDR_URPFFAILED:
1467					yyerror("\"urpf-failed\" is not "
1468					    "permitted inside tables");
1469					break;
1470				default:
1471					yyerror("unknown address type %d",
1472					    n->addr.type);
1473				}
1474				YYERROR;
1475			}
1476			if (!(ti = calloc(1, sizeof(*ti))))
1477				err(1, "table_opt: calloc");
1478			ti->host = $3;
1479			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1480			    entries);
1481			table_opts.init_addr = 1;
1482		}
1483		| FILENAME STRING	{
1484			struct node_tinit	*ti;
1485
1486			if (!(ti = calloc(1, sizeof(*ti))))
1487				err(1, "table_opt: calloc");
1488			ti->file = $2;
1489			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1490			    entries);
1491			table_opts.init_addr = 1;
1492		}
1493		;
1494
1495altqif		: ALTQ interface queue_opts QUEUE qassign {
1496			struct pf_altq	a;
1497
1498			if (check_rulestate(PFCTL_STATE_QUEUE))
1499				YYERROR;
1500
1501			memset(&a, 0, sizeof(a));
1502			if ($3.scheduler.qtype == ALTQT_NONE) {
1503				yyerror("no scheduler specified!");
1504				YYERROR;
1505			}
1506			a.scheduler = $3.scheduler.qtype;
1507			a.qlimit = $3.qlimit;
1508			a.tbrsize = $3.tbrsize;
1509			if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) {
1510				yyerror("no child queues specified");
1511				YYERROR;
1512			}
1513			if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1514			    &$3.scheduler))
1515				YYERROR;
1516		}
1517		;
1518
1519queuespec	: QUEUE STRING interface queue_opts qassign {
1520			struct pf_altq	a;
1521
1522			if (check_rulestate(PFCTL_STATE_QUEUE)) {
1523				free($2);
1524				YYERROR;
1525			}
1526
1527			memset(&a, 0, sizeof(a));
1528
1529			if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1530			    sizeof(a.qname)) {
1531				yyerror("queue name too long (max "
1532				    "%d chars)", PF_QNAME_SIZE-1);
1533				free($2);
1534				YYERROR;
1535			}
1536			free($2);
1537			if ($4.tbrsize) {
1538				yyerror("cannot specify tbrsize for queue");
1539				YYERROR;
1540			}
1541			if ($4.priority > 255) {
1542				yyerror("priority out of range: max 255");
1543				YYERROR;
1544			}
1545			a.priority = $4.priority;
1546			a.qlimit = $4.qlimit;
1547			a.scheduler = $4.scheduler.qtype;
1548			if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1549			    &$4.scheduler)) {
1550				yyerror("errors in queue definition");
1551				YYERROR;
1552			}
1553		}
1554		;
1555
1556queue_opts	:	{
1557			bzero(&queue_opts, sizeof queue_opts);
1558			queue_opts.priority = DEFAULT_PRIORITY;
1559			queue_opts.qlimit = DEFAULT_QLIMIT;
1560			queue_opts.scheduler.qtype = ALTQT_NONE;
1561			queue_opts.queue_bwspec.bw_percent = 100;
1562		}
1563		    queue_opts_l
1564			{ $$ = queue_opts; }
1565		| /* empty */ {
1566			bzero(&queue_opts, sizeof queue_opts);
1567			queue_opts.priority = DEFAULT_PRIORITY;
1568			queue_opts.qlimit = DEFAULT_QLIMIT;
1569			queue_opts.scheduler.qtype = ALTQT_NONE;
1570			queue_opts.queue_bwspec.bw_percent = 100;
1571			$$ = queue_opts;
1572		}
1573		;
1574
1575queue_opts_l	: queue_opts_l queue_opt
1576		| queue_opt
1577		;
1578
1579queue_opt	: BANDWIDTH bandwidth	{
1580			if (queue_opts.marker & QOM_BWSPEC) {
1581				yyerror("bandwidth cannot be respecified");
1582				YYERROR;
1583			}
1584			queue_opts.marker |= QOM_BWSPEC;
1585			queue_opts.queue_bwspec = $2;
1586		}
1587		| PRIORITY NUMBER	{
1588			if (queue_opts.marker & QOM_PRIORITY) {
1589				yyerror("priority cannot be respecified");
1590				YYERROR;
1591			}
1592			if ($2 < 0 || $2 > 255) {
1593				yyerror("priority out of range: max 255");
1594				YYERROR;
1595			}
1596			queue_opts.marker |= QOM_PRIORITY;
1597			queue_opts.priority = $2;
1598		}
1599		| QLIMIT NUMBER	{
1600			if (queue_opts.marker & QOM_QLIMIT) {
1601				yyerror("qlimit cannot be respecified");
1602				YYERROR;
1603			}
1604			if ($2 < 0 || $2 > 65535) {
1605				yyerror("qlimit out of range: max 65535");
1606				YYERROR;
1607			}
1608			queue_opts.marker |= QOM_QLIMIT;
1609			queue_opts.qlimit = $2;
1610		}
1611		| scheduler	{
1612			if (queue_opts.marker & QOM_SCHEDULER) {
1613				yyerror("scheduler cannot be respecified");
1614				YYERROR;
1615			}
1616			queue_opts.marker |= QOM_SCHEDULER;
1617			queue_opts.scheduler = $1;
1618		}
1619		| TBRSIZE NUMBER	{
1620			if (queue_opts.marker & QOM_TBRSIZE) {
1621				yyerror("tbrsize cannot be respecified");
1622				YYERROR;
1623			}
1624			if ($2 < 0 || $2 > 65535) {
1625				yyerror("tbrsize too big: max 65535");
1626				YYERROR;
1627			}
1628			queue_opts.marker |= QOM_TBRSIZE;
1629			queue_opts.tbrsize = $2;
1630		}
1631		;
1632
1633bandwidth	: STRING {
1634			double	 bps;
1635			char	*cp;
1636
1637			$$.bw_percent = 0;
1638
1639			bps = strtod($1, &cp);
1640			if (cp != NULL) {
1641				if (strlen(cp) > 1) {
1642					char *cu = cp + 1;
1643					if (!strcmp(cu, "Bit") ||
1644					    !strcmp(cu, "B") ||
1645					    !strcmp(cu, "bit") ||
1646					    !strcmp(cu, "b")) {
1647						*cu = 0;
1648					}
1649				}
1650				if (!strcmp(cp, "b"))
1651					; /* nothing */
1652				else if (!strcmp(cp, "K"))
1653					bps *= 1000;
1654				else if (!strcmp(cp, "M"))
1655					bps *= 1000 * 1000;
1656				else if (!strcmp(cp, "G"))
1657					bps *= 1000 * 1000 * 1000;
1658				else if (!strcmp(cp, "%")) {
1659					if (bps < 0 || bps > 100) {
1660						yyerror("bandwidth spec "
1661						    "out of range");
1662						free($1);
1663						YYERROR;
1664					}
1665					$$.bw_percent = bps;
1666					bps = 0;
1667				} else {
1668					yyerror("unknown unit %s", cp);
1669					free($1);
1670					YYERROR;
1671				}
1672			}
1673			free($1);
1674			$$.bw_absolute = (u_int32_t)bps;
1675		}
1676		| NUMBER {
1677			if ($1 < 0 || $1 > UINT_MAX) {
1678				yyerror("bandwidth number too big");
1679				YYERROR;
1680			}
1681			$$.bw_percent = 0;
1682			$$.bw_absolute = $1;
1683		}
1684		;
1685
1686scheduler	: CBQ				{
1687			$$.qtype = ALTQT_CBQ;
1688			$$.data.cbq_opts.flags = 0;
1689		}
1690		| CBQ '(' cbqflags_list ')'	{
1691			$$.qtype = ALTQT_CBQ;
1692			$$.data.cbq_opts.flags = $3;
1693		}
1694		| PRIQ				{
1695			$$.qtype = ALTQT_PRIQ;
1696			$$.data.priq_opts.flags = 0;
1697		}
1698		| PRIQ '(' priqflags_list ')'	{
1699			$$.qtype = ALTQT_PRIQ;
1700			$$.data.priq_opts.flags = $3;
1701		}
1702		| HFSC				{
1703			$$.qtype = ALTQT_HFSC;
1704			bzero(&$$.data.hfsc_opts,
1705			    sizeof(struct node_hfsc_opts));
1706		}
1707		| HFSC '(' hfsc_opts ')'	{
1708			$$.qtype = ALTQT_HFSC;
1709			$$.data.hfsc_opts = $3;
1710		}
1711		| FAIRQ				{
1712			$$.qtype = ALTQT_FAIRQ;
1713			bzero(&$$.data.fairq_opts,
1714				sizeof(struct node_fairq_opts));
1715		}
1716		| FAIRQ '(' fairq_opts ')'      {
1717			$$.qtype = ALTQT_FAIRQ;
1718			$$.data.fairq_opts = $3;
1719		}
1720		| CODEL				{
1721			$$.qtype = ALTQT_CODEL;
1722			bzero(&$$.data.codel_opts,
1723				sizeof(struct codel_opts));
1724		}
1725		| CODEL '(' codel_opts ')'	{
1726			$$.qtype = ALTQT_CODEL;
1727			$$.data.codel_opts = $3;
1728		}
1729		;
1730
1731cbqflags_list	: cbqflags_item				{ $$ |= $1; }
1732		| cbqflags_list comma cbqflags_item	{ $$ |= $3; }
1733		;
1734
1735cbqflags_item	: STRING	{
1736			if (!strcmp($1, "default"))
1737				$$ = CBQCLF_DEFCLASS;
1738			else if (!strcmp($1, "borrow"))
1739				$$ = CBQCLF_BORROW;
1740			else if (!strcmp($1, "red"))
1741				$$ = CBQCLF_RED;
1742			else if (!strcmp($1, "ecn"))
1743				$$ = CBQCLF_RED|CBQCLF_ECN;
1744			else if (!strcmp($1, "rio"))
1745				$$ = CBQCLF_RIO;
1746			else if (!strcmp($1, "codel"))
1747				$$ = CBQCLF_CODEL;
1748			else {
1749				yyerror("unknown cbq flag \"%s\"", $1);
1750				free($1);
1751				YYERROR;
1752			}
1753			free($1);
1754		}
1755		;
1756
1757priqflags_list	: priqflags_item			{ $$ |= $1; }
1758		| priqflags_list comma priqflags_item	{ $$ |= $3; }
1759		;
1760
1761priqflags_item	: STRING	{
1762			if (!strcmp($1, "default"))
1763				$$ = PRCF_DEFAULTCLASS;
1764			else if (!strcmp($1, "red"))
1765				$$ = PRCF_RED;
1766			else if (!strcmp($1, "ecn"))
1767				$$ = PRCF_RED|PRCF_ECN;
1768			else if (!strcmp($1, "rio"))
1769				$$ = PRCF_RIO;
1770			else if (!strcmp($1, "codel"))
1771				$$ = PRCF_CODEL;
1772			else {
1773				yyerror("unknown priq flag \"%s\"", $1);
1774				free($1);
1775				YYERROR;
1776			}
1777			free($1);
1778		}
1779		;
1780
1781hfsc_opts	:	{
1782				bzero(&hfsc_opts,
1783				    sizeof(struct node_hfsc_opts));
1784			}
1785		    hfscopts_list				{
1786			$$ = hfsc_opts;
1787		}
1788		;
1789
1790hfscopts_list	: hfscopts_item
1791		| hfscopts_list comma hfscopts_item
1792		;
1793
1794hfscopts_item	: LINKSHARE bandwidth				{
1795			if (hfsc_opts.linkshare.used) {
1796				yyerror("linkshare already specified");
1797				YYERROR;
1798			}
1799			hfsc_opts.linkshare.m2 = $2;
1800			hfsc_opts.linkshare.used = 1;
1801		}
1802		| LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')'
1803		    {
1804			if ($5 < 0 || $5 > INT_MAX) {
1805				yyerror("timing in curve out of range");
1806				YYERROR;
1807			}
1808			if (hfsc_opts.linkshare.used) {
1809				yyerror("linkshare already specified");
1810				YYERROR;
1811			}
1812			hfsc_opts.linkshare.m1 = $3;
1813			hfsc_opts.linkshare.d = $5;
1814			hfsc_opts.linkshare.m2 = $7;
1815			hfsc_opts.linkshare.used = 1;
1816		}
1817		| REALTIME bandwidth				{
1818			if (hfsc_opts.realtime.used) {
1819				yyerror("realtime already specified");
1820				YYERROR;
1821			}
1822			hfsc_opts.realtime.m2 = $2;
1823			hfsc_opts.realtime.used = 1;
1824		}
1825		| REALTIME '(' bandwidth comma NUMBER comma bandwidth ')'
1826		    {
1827			if ($5 < 0 || $5 > INT_MAX) {
1828				yyerror("timing in curve out of range");
1829				YYERROR;
1830			}
1831			if (hfsc_opts.realtime.used) {
1832				yyerror("realtime already specified");
1833				YYERROR;
1834			}
1835			hfsc_opts.realtime.m1 = $3;
1836			hfsc_opts.realtime.d = $5;
1837			hfsc_opts.realtime.m2 = $7;
1838			hfsc_opts.realtime.used = 1;
1839		}
1840		| UPPERLIMIT bandwidth				{
1841			if (hfsc_opts.upperlimit.used) {
1842				yyerror("upperlimit already specified");
1843				YYERROR;
1844			}
1845			hfsc_opts.upperlimit.m2 = $2;
1846			hfsc_opts.upperlimit.used = 1;
1847		}
1848		| UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')'
1849		    {
1850			if ($5 < 0 || $5 > INT_MAX) {
1851				yyerror("timing in curve out of range");
1852				YYERROR;
1853			}
1854			if (hfsc_opts.upperlimit.used) {
1855				yyerror("upperlimit already specified");
1856				YYERROR;
1857			}
1858			hfsc_opts.upperlimit.m1 = $3;
1859			hfsc_opts.upperlimit.d = $5;
1860			hfsc_opts.upperlimit.m2 = $7;
1861			hfsc_opts.upperlimit.used = 1;
1862		}
1863		| STRING	{
1864			if (!strcmp($1, "default"))
1865				hfsc_opts.flags |= HFCF_DEFAULTCLASS;
1866			else if (!strcmp($1, "red"))
1867				hfsc_opts.flags |= HFCF_RED;
1868			else if (!strcmp($1, "ecn"))
1869				hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
1870			else if (!strcmp($1, "rio"))
1871				hfsc_opts.flags |= HFCF_RIO;
1872			else if (!strcmp($1, "codel"))
1873				hfsc_opts.flags |= HFCF_CODEL;
1874			else {
1875				yyerror("unknown hfsc flag \"%s\"", $1);
1876				free($1);
1877				YYERROR;
1878			}
1879			free($1);
1880		}
1881		;
1882
1883fairq_opts	:	{
1884				bzero(&fairq_opts,
1885				    sizeof(struct node_fairq_opts));
1886			}
1887		    fairqopts_list				{
1888			$$ = fairq_opts;
1889		}
1890		;
1891
1892fairqopts_list	: fairqopts_item
1893		| fairqopts_list comma fairqopts_item
1894		;
1895
1896fairqopts_item	: LINKSHARE bandwidth				{
1897			if (fairq_opts.linkshare.used) {
1898				yyerror("linkshare already specified");
1899				YYERROR;
1900			}
1901			fairq_opts.linkshare.m2 = $2;
1902			fairq_opts.linkshare.used = 1;
1903		}
1904		| LINKSHARE '(' bandwidth number bandwidth ')'	{
1905			if (fairq_opts.linkshare.used) {
1906				yyerror("linkshare already specified");
1907				YYERROR;
1908			}
1909			fairq_opts.linkshare.m1 = $3;
1910			fairq_opts.linkshare.d = $4;
1911			fairq_opts.linkshare.m2 = $5;
1912			fairq_opts.linkshare.used = 1;
1913		}
1914		| HOGS bandwidth {
1915			fairq_opts.hogs_bw = $2;
1916		}
1917		| BUCKETS number {
1918			fairq_opts.nbuckets = $2;
1919		}
1920		| STRING	{
1921			if (!strcmp($1, "default"))
1922				fairq_opts.flags |= FARF_DEFAULTCLASS;
1923			else if (!strcmp($1, "red"))
1924				fairq_opts.flags |= FARF_RED;
1925			else if (!strcmp($1, "ecn"))
1926				fairq_opts.flags |= FARF_RED|FARF_ECN;
1927			else if (!strcmp($1, "rio"))
1928				fairq_opts.flags |= FARF_RIO;
1929			else if (!strcmp($1, "codel"))
1930				fairq_opts.flags |= FARF_CODEL;
1931			else {
1932				yyerror("unknown fairq flag \"%s\"", $1);
1933				free($1);
1934				YYERROR;
1935			}
1936			free($1);
1937		}
1938		;
1939
1940codel_opts	:	{
1941				bzero(&codel_opts,
1942				    sizeof(struct codel_opts));
1943			}
1944		    codelopts_list				{
1945			$$ = codel_opts;
1946		}
1947		;
1948
1949codelopts_list	: codelopts_item
1950		| codelopts_list comma codelopts_item
1951		;
1952
1953codelopts_item	: INTERVAL number				{
1954			if (codel_opts.interval) {
1955				yyerror("interval already specified");
1956				YYERROR;
1957			}
1958			codel_opts.interval = $2;
1959		}
1960		| TARGET number					{
1961			if (codel_opts.target) {
1962				yyerror("target already specified");
1963				YYERROR;
1964			}
1965			codel_opts.target = $2;
1966		}
1967		| STRING					{
1968			if (!strcmp($1, "ecn"))
1969				codel_opts.ecn = 1;
1970			else {
1971				yyerror("unknown codel option \"%s\"", $1);
1972				free($1);
1973				YYERROR;
1974			}
1975			free($1);
1976		}
1977		;
1978
1979qassign		: /* empty */		{ $$ = NULL; }
1980		| qassign_item		{ $$ = $1; }
1981		| '{' optnl qassign_list '}'	{ $$ = $3; }
1982		;
1983
1984qassign_list	: qassign_item optnl		{ $$ = $1; }
1985		| qassign_list comma qassign_item optnl	{
1986			$1->tail->next = $3;
1987			$1->tail = $3;
1988			$$ = $1;
1989		}
1990		;
1991
1992qassign_item	: STRING			{
1993			$$ = calloc(1, sizeof(struct node_queue));
1994			if ($$ == NULL)
1995				err(1, "qassign_item: calloc");
1996			if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
1997			    sizeof($$->queue)) {
1998				yyerror("queue name '%s' too long (max "
1999				    "%d chars)", $1, sizeof($$->queue)-1);
2000				free($1);
2001				free($$);
2002				YYERROR;
2003			}
2004			free($1);
2005			$$->next = NULL;
2006			$$->tail = $$;
2007		}
2008		;
2009
2010pfrule		: action dir logquick interface route af proto fromto
2011		    filter_opts
2012		{
2013			struct pf_rule		 r;
2014			struct node_state_opt	*o;
2015			struct node_proto	*proto;
2016			int			 srctrack = 0;
2017			int			 statelock = 0;
2018			int			 adaptive = 0;
2019			int			 defaults = 0;
2020
2021			if (check_rulestate(PFCTL_STATE_FILTER))
2022				YYERROR;
2023
2024			memset(&r, 0, sizeof(r));
2025
2026			r.action = $1.b1;
2027			switch ($1.b2) {
2028			case PFRULE_RETURNRST:
2029				r.rule_flag |= PFRULE_RETURNRST;
2030				r.return_ttl = $1.w;
2031				break;
2032			case PFRULE_RETURNICMP:
2033				r.rule_flag |= PFRULE_RETURNICMP;
2034				r.return_icmp = $1.w;
2035				r.return_icmp6 = $1.w2;
2036				break;
2037			case PFRULE_RETURN:
2038				r.rule_flag |= PFRULE_RETURN;
2039				r.return_icmp = $1.w;
2040				r.return_icmp6 = $1.w2;
2041				break;
2042			}
2043			r.direction = $2;
2044			r.log = $3.log;
2045			r.logif = $3.logif;
2046			r.quick = $3.quick;
2047			r.prob = $9.prob;
2048			r.rtableid = $9.rtableid;
2049
2050			if ($9.marker & FOM_PRIO) {
2051				if ($9.prio == 0)
2052					r.prio = PF_PRIO_ZERO;
2053				else
2054					r.prio = $9.prio;
2055			}
2056			if ($9.marker & FOM_SETPRIO) {
2057				r.set_prio[0] = $9.set_prio[0];
2058				r.set_prio[1] = $9.set_prio[1];
2059				r.scrub_flags |= PFSTATE_SETPRIO;
2060			}
2061
2062			r.af = $6;
2063			if ($9.tag)
2064				if (strlcpy(r.tagname, $9.tag,
2065				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2066					yyerror("tag too long, max %u chars",
2067					    PF_TAG_NAME_SIZE - 1);
2068					YYERROR;
2069				}
2070			if ($9.match_tag)
2071				if (strlcpy(r.match_tagname, $9.match_tag,
2072				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2073					yyerror("tag too long, max %u chars",
2074					    PF_TAG_NAME_SIZE - 1);
2075					YYERROR;
2076				}
2077			r.match_tag_not = $9.match_tag_not;
2078			if (rule_label(&r, $9.label))
2079				YYERROR;
2080			free($9.label);
2081			r.flags = $9.flags.b1;
2082			r.flagset = $9.flags.b2;
2083			if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
2084				yyerror("flags always false");
2085				YYERROR;
2086			}
2087			if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
2088				for (proto = $7; proto != NULL &&
2089				    proto->proto != IPPROTO_TCP;
2090				    proto = proto->next)
2091					;	/* nothing */
2092				if (proto == NULL && $7 != NULL) {
2093					if ($9.flags.b1 || $9.flags.b2)
2094						yyerror(
2095						    "flags only apply to tcp");
2096					if ($8.src_os)
2097						yyerror(
2098						    "OS fingerprinting only "
2099						    "apply to tcp");
2100					YYERROR;
2101				}
2102#if 0
2103				if (($9.flags.b1 & parse_flags("S")) == 0 &&
2104				    $8.src_os) {
2105					yyerror("OS fingerprinting requires "
2106					    "the SYN TCP flag (flags S/SA)");
2107					YYERROR;
2108				}
2109#endif
2110			}
2111
2112			r.tos = $9.tos;
2113			r.keep_state = $9.keep.action;
2114			o = $9.keep.options;
2115
2116			/* 'keep state' by default on pass rules. */
2117			if (!r.keep_state && !r.action &&
2118			    !($9.marker & FOM_KEEP)) {
2119				r.keep_state = PF_STATE_NORMAL;
2120				o = keep_state_defaults;
2121				defaults = 1;
2122			}
2123
2124			while (o) {
2125				struct node_state_opt	*p = o;
2126
2127				switch (o->type) {
2128				case PF_STATE_OPT_MAX:
2129					if (r.max_states) {
2130						yyerror("state option 'max' "
2131						    "multiple definitions");
2132						YYERROR;
2133					}
2134					r.max_states = o->data.max_states;
2135					break;
2136				case PF_STATE_OPT_NOSYNC:
2137					if (r.rule_flag & PFRULE_NOSYNC) {
2138						yyerror("state option 'sync' "
2139						    "multiple definitions");
2140						YYERROR;
2141					}
2142					r.rule_flag |= PFRULE_NOSYNC;
2143					break;
2144				case PF_STATE_OPT_SRCTRACK:
2145					if (srctrack) {
2146						yyerror("state option "
2147						    "'source-track' "
2148						    "multiple definitions");
2149						YYERROR;
2150					}
2151					srctrack =  o->data.src_track;
2152					r.rule_flag |= PFRULE_SRCTRACK;
2153					break;
2154				case PF_STATE_OPT_MAX_SRC_STATES:
2155					if (r.max_src_states) {
2156						yyerror("state option "
2157						    "'max-src-states' "
2158						    "multiple definitions");
2159						YYERROR;
2160					}
2161					if (o->data.max_src_states == 0) {
2162						yyerror("'max-src-states' must "
2163						    "be > 0");
2164						YYERROR;
2165					}
2166					r.max_src_states =
2167					    o->data.max_src_states;
2168					r.rule_flag |= PFRULE_SRCTRACK;
2169					break;
2170				case PF_STATE_OPT_OVERLOAD:
2171					if (r.overload_tblname[0]) {
2172						yyerror("multiple 'overload' "
2173						    "table definitions");
2174						YYERROR;
2175					}
2176					if (strlcpy(r.overload_tblname,
2177					    o->data.overload.tblname,
2178					    PF_TABLE_NAME_SIZE) >=
2179					    PF_TABLE_NAME_SIZE) {
2180						yyerror("state option: "
2181						    "strlcpy");
2182						YYERROR;
2183					}
2184					r.flush = o->data.overload.flush;
2185					break;
2186				case PF_STATE_OPT_MAX_SRC_CONN:
2187					if (r.max_src_conn) {
2188						yyerror("state option "
2189						    "'max-src-conn' "
2190						    "multiple definitions");
2191						YYERROR;
2192					}
2193					if (o->data.max_src_conn == 0) {
2194						yyerror("'max-src-conn' "
2195						    "must be > 0");
2196						YYERROR;
2197					}
2198					r.max_src_conn =
2199					    o->data.max_src_conn;
2200					r.rule_flag |= PFRULE_SRCTRACK |
2201					    PFRULE_RULESRCTRACK;
2202					break;
2203				case PF_STATE_OPT_MAX_SRC_CONN_RATE:
2204					if (r.max_src_conn_rate.limit) {
2205						yyerror("state option "
2206						    "'max-src-conn-rate' "
2207						    "multiple definitions");
2208						YYERROR;
2209					}
2210					if (!o->data.max_src_conn_rate.limit ||
2211					    !o->data.max_src_conn_rate.seconds) {
2212						yyerror("'max-src-conn-rate' "
2213						    "values must be > 0");
2214						YYERROR;
2215					}
2216					if (o->data.max_src_conn_rate.limit >
2217					    PF_THRESHOLD_MAX) {
2218						yyerror("'max-src-conn-rate' "
2219						    "maximum rate must be < %u",
2220						    PF_THRESHOLD_MAX);
2221						YYERROR;
2222					}
2223					r.max_src_conn_rate.limit =
2224					    o->data.max_src_conn_rate.limit;
2225					r.max_src_conn_rate.seconds =
2226					    o->data.max_src_conn_rate.seconds;
2227					r.rule_flag |= PFRULE_SRCTRACK |
2228					    PFRULE_RULESRCTRACK;
2229					break;
2230				case PF_STATE_OPT_MAX_SRC_NODES:
2231					if (r.max_src_nodes) {
2232						yyerror("state option "
2233						    "'max-src-nodes' "
2234						    "multiple definitions");
2235						YYERROR;
2236					}
2237					if (o->data.max_src_nodes == 0) {
2238						yyerror("'max-src-nodes' must "
2239						    "be > 0");
2240						YYERROR;
2241					}
2242					r.max_src_nodes =
2243					    o->data.max_src_nodes;
2244					r.rule_flag |= PFRULE_SRCTRACK |
2245					    PFRULE_RULESRCTRACK;
2246					break;
2247				case PF_STATE_OPT_STATELOCK:
2248					if (statelock) {
2249						yyerror("state locking option: "
2250						    "multiple definitions");
2251						YYERROR;
2252					}
2253					statelock = 1;
2254					r.rule_flag |= o->data.statelock;
2255					break;
2256				case PF_STATE_OPT_SLOPPY:
2257					if (r.rule_flag & PFRULE_STATESLOPPY) {
2258						yyerror("state sloppy option: "
2259						    "multiple definitions");
2260						YYERROR;
2261					}
2262					r.rule_flag |= PFRULE_STATESLOPPY;
2263					break;
2264				case PF_STATE_OPT_TIMEOUT:
2265					if (o->data.timeout.number ==
2266					    PFTM_ADAPTIVE_START ||
2267					    o->data.timeout.number ==
2268					    PFTM_ADAPTIVE_END)
2269						adaptive = 1;
2270					if (r.timeout[o->data.timeout.number]) {
2271						yyerror("state timeout %s "
2272						    "multiple definitions",
2273						    pf_timeouts[o->data.
2274						    timeout.number].name);
2275						YYERROR;
2276					}
2277					r.timeout[o->data.timeout.number] =
2278					    o->data.timeout.seconds;
2279				}
2280				o = o->next;
2281				if (!defaults)
2282					free(p);
2283			}
2284
2285			/* 'flags S/SA' by default on stateful rules */
2286			if (!r.action && !r.flags && !r.flagset &&
2287			    !$9.fragment && !($9.marker & FOM_FLAGS) &&
2288			    r.keep_state) {
2289				r.flags = parse_flags("S");
2290				r.flagset =  parse_flags("SA");
2291			}
2292			if (!adaptive && r.max_states) {
2293				r.timeout[PFTM_ADAPTIVE_START] =
2294				    (r.max_states / 10) * 6;
2295				r.timeout[PFTM_ADAPTIVE_END] =
2296				    (r.max_states / 10) * 12;
2297			}
2298			if (r.rule_flag & PFRULE_SRCTRACK) {
2299				if (srctrack == PF_SRCTRACK_GLOBAL &&
2300				    r.max_src_nodes) {
2301					yyerror("'max-src-nodes' is "
2302					    "incompatible with "
2303					    "'source-track global'");
2304					YYERROR;
2305				}
2306				if (srctrack == PF_SRCTRACK_GLOBAL &&
2307				    r.max_src_conn) {
2308					yyerror("'max-src-conn' is "
2309					    "incompatible with "
2310					    "'source-track global'");
2311					YYERROR;
2312				}
2313				if (srctrack == PF_SRCTRACK_GLOBAL &&
2314				    r.max_src_conn_rate.seconds) {
2315					yyerror("'max-src-conn-rate' is "
2316					    "incompatible with "
2317					    "'source-track global'");
2318					YYERROR;
2319				}
2320				if (r.timeout[PFTM_SRC_NODE] <
2321				    r.max_src_conn_rate.seconds)
2322					r.timeout[PFTM_SRC_NODE] =
2323					    r.max_src_conn_rate.seconds;
2324				r.rule_flag |= PFRULE_SRCTRACK;
2325				if (srctrack == PF_SRCTRACK_RULE)
2326					r.rule_flag |= PFRULE_RULESRCTRACK;
2327			}
2328			if (r.keep_state && !statelock)
2329				r.rule_flag |= default_statelock;
2330
2331			if ($9.fragment)
2332				r.rule_flag |= PFRULE_FRAGMENT;
2333			r.allow_opts = $9.allowopts;
2334
2335			decide_address_family($8.src.host, &r.af);
2336			decide_address_family($8.dst.host, &r.af);
2337
2338			if ($5.rt) {
2339				if (!r.direction) {
2340					yyerror("direction must be explicit "
2341					    "with rules that specify routing");
2342					YYERROR;
2343				}
2344				r.rt = $5.rt;
2345				r.rpool.opts = $5.pool_opts;
2346				if ($5.key != NULL)
2347					memcpy(&r.rpool.key, $5.key,
2348					    sizeof(struct pf_poolhashkey));
2349			}
2350			if (r.rt && r.rt != PF_FASTROUTE) {
2351				decide_address_family($5.host, &r.af);
2352				remove_invalid_hosts(&$5.host, &r.af);
2353				if ($5.host == NULL) {
2354					yyerror("no routing address with "
2355					    "matching address family found.");
2356					YYERROR;
2357				}
2358				if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
2359				    PF_POOL_NONE && ($5.host->next != NULL ||
2360				    $5.host->addr.type == PF_ADDR_TABLE ||
2361				    DYNIF_MULTIADDR($5.host->addr)))
2362					r.rpool.opts |= PF_POOL_ROUNDROBIN;
2363				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2364				    PF_POOL_ROUNDROBIN &&
2365				    disallow_table($5.host, "tables are only "
2366				    "supported in round-robin routing pools"))
2367					YYERROR;
2368				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2369				    PF_POOL_ROUNDROBIN &&
2370				    disallow_alias($5.host, "interface (%s) "
2371				    "is only supported in round-robin "
2372				    "routing pools"))
2373					YYERROR;
2374				if ($5.host->next != NULL) {
2375					if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2376					    PF_POOL_ROUNDROBIN) {
2377						yyerror("r.rpool.opts must "
2378						    "be PF_POOL_ROUNDROBIN");
2379						YYERROR;
2380					}
2381				}
2382			}
2383			if ($9.queues.qname != NULL) {
2384				if (strlcpy(r.qname, $9.queues.qname,
2385				    sizeof(r.qname)) >= sizeof(r.qname)) {
2386					yyerror("rule qname too long (max "
2387					    "%d chars)", sizeof(r.qname)-1);
2388					YYERROR;
2389				}
2390				free($9.queues.qname);
2391			}
2392			if ($9.queues.pqname != NULL) {
2393				if (strlcpy(r.pqname, $9.queues.pqname,
2394				    sizeof(r.pqname)) >= sizeof(r.pqname)) {
2395					yyerror("rule pqname too long (max "
2396					    "%d chars)", sizeof(r.pqname)-1);
2397					YYERROR;
2398				}
2399				free($9.queues.pqname);
2400			}
2401#ifdef __FreeBSD__
2402			r.divert.port = $9.divert.port;
2403#else
2404			if ((r.divert.port = $9.divert.port)) {
2405				if (r.direction == PF_OUT) {
2406					if ($9.divert.addr) {
2407						yyerror("address specified "
2408						    "for outgoing divert");
2409						YYERROR;
2410					}
2411					bzero(&r.divert.addr,
2412					    sizeof(r.divert.addr));
2413				} else {
2414					if (!$9.divert.addr) {
2415						yyerror("no address specified "
2416						    "for incoming divert");
2417						YYERROR;
2418					}
2419					if ($9.divert.addr->af != r.af) {
2420						yyerror("address family "
2421						    "mismatch for divert");
2422						YYERROR;
2423					}
2424					r.divert.addr =
2425					    $9.divert.addr->addr.v.a.addr;
2426				}
2427			}
2428#endif
2429
2430			expand_rule(&r, $4, $5.host, $7, $8.src_os,
2431			    $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
2432			    $9.uid, $9.gid, $9.icmpspec, "");
2433		}
2434		;
2435
2436filter_opts	:	{
2437				bzero(&filter_opts, sizeof filter_opts);
2438				filter_opts.rtableid = -1;
2439			}
2440		    filter_opts_l
2441			{ $$ = filter_opts; }
2442		| /* empty */	{
2443			bzero(&filter_opts, sizeof filter_opts);
2444			filter_opts.rtableid = -1;
2445			$$ = filter_opts;
2446		}
2447		;
2448
2449filter_opts_l	: filter_opts_l filter_opt
2450		| filter_opt
2451		;
2452
2453filter_opt	: USER uids {
2454			if (filter_opts.uid)
2455				$2->tail->next = filter_opts.uid;
2456			filter_opts.uid = $2;
2457		}
2458		| GROUP gids {
2459			if (filter_opts.gid)
2460				$2->tail->next = filter_opts.gid;
2461			filter_opts.gid = $2;
2462		}
2463		| flags {
2464			if (filter_opts.marker & FOM_FLAGS) {
2465				yyerror("flags cannot be redefined");
2466				YYERROR;
2467			}
2468			filter_opts.marker |= FOM_FLAGS;
2469			filter_opts.flags.b1 |= $1.b1;
2470			filter_opts.flags.b2 |= $1.b2;
2471			filter_opts.flags.w |= $1.w;
2472			filter_opts.flags.w2 |= $1.w2;
2473		}
2474		| icmpspec {
2475			if (filter_opts.marker & FOM_ICMP) {
2476				yyerror("icmp-type cannot be redefined");
2477				YYERROR;
2478			}
2479			filter_opts.marker |= FOM_ICMP;
2480			filter_opts.icmpspec = $1;
2481		}
2482		| PRIO NUMBER {
2483			if (filter_opts.marker & FOM_PRIO) {
2484				yyerror("prio cannot be redefined");
2485				YYERROR;
2486			}
2487			if ($2 < 0 || $2 > PF_PRIO_MAX) {
2488				yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2489				YYERROR;
2490			}
2491			filter_opts.marker |= FOM_PRIO;
2492			filter_opts.prio = $2;
2493		}
2494		| TOS tos {
2495			if (filter_opts.marker & FOM_TOS) {
2496				yyerror("tos cannot be redefined");
2497				YYERROR;
2498			}
2499			filter_opts.marker |= FOM_TOS;
2500			filter_opts.tos = $2;
2501		}
2502		| keep {
2503			if (filter_opts.marker & FOM_KEEP) {
2504				yyerror("modulate or keep cannot be redefined");
2505				YYERROR;
2506			}
2507			filter_opts.marker |= FOM_KEEP;
2508			filter_opts.keep.action = $1.action;
2509			filter_opts.keep.options = $1.options;
2510		}
2511		| FRAGMENT {
2512			filter_opts.fragment = 1;
2513		}
2514		| ALLOWOPTS {
2515			filter_opts.allowopts = 1;
2516		}
2517		| label	{
2518			if (filter_opts.label) {
2519				yyerror("label cannot be redefined");
2520				YYERROR;
2521			}
2522			filter_opts.label = $1;
2523		}
2524		| qname	{
2525			if (filter_opts.queues.qname) {
2526				yyerror("queue cannot be redefined");
2527				YYERROR;
2528			}
2529			filter_opts.queues = $1;
2530		}
2531		| TAG string				{
2532			filter_opts.tag = $2;
2533		}
2534		| not TAGGED string			{
2535			filter_opts.match_tag = $3;
2536			filter_opts.match_tag_not = $1;
2537		}
2538		| PROBABILITY probability		{
2539			double	p;
2540
2541			p = floor($2 * UINT_MAX + 0.5);
2542			if (p < 0.0 || p > UINT_MAX) {
2543				yyerror("invalid probability: %lf", p);
2544				YYERROR;
2545			}
2546			filter_opts.prob = (u_int32_t)p;
2547			if (filter_opts.prob == 0)
2548				filter_opts.prob = 1;
2549		}
2550		| RTABLE NUMBER				{
2551			if ($2 < 0 || $2 > rt_tableid_max()) {
2552				yyerror("invalid rtable id");
2553				YYERROR;
2554			}
2555			filter_opts.rtableid = $2;
2556		}
2557		| DIVERTTO portplain {
2558#ifdef __FreeBSD__
2559			filter_opts.divert.port = $2.a;
2560			if (!filter_opts.divert.port) {
2561				yyerror("invalid divert port: %u", ntohs($2.a));
2562				YYERROR;
2563			}
2564#endif
2565		}
2566		| DIVERTTO STRING PORT portplain {
2567#ifndef __FreeBSD__
2568			if ((filter_opts.divert.addr = host($2)) == NULL) {
2569				yyerror("could not parse divert address: %s",
2570				    $2);
2571				free($2);
2572				YYERROR;
2573			}
2574#else
2575			if ($2)
2576#endif
2577			free($2);
2578			filter_opts.divert.port = $4.a;
2579			if (!filter_opts.divert.port) {
2580				yyerror("invalid divert port: %u", ntohs($4.a));
2581				YYERROR;
2582			}
2583		}
2584		| DIVERTREPLY {
2585#ifdef __FreeBSD__
2586			yyerror("divert-reply has no meaning in FreeBSD pf(4)");
2587			YYERROR;
2588#else
2589			filter_opts.divert.port = 1;	/* some random value */
2590#endif
2591		}
2592		| filter_sets
2593		;
2594
2595filter_sets	: SET '(' filter_sets_l ')'	{ $$ = filter_opts; }
2596		| SET filter_set		{ $$ = filter_opts; }
2597		;
2598
2599filter_sets_l	: filter_sets_l comma filter_set
2600		| filter_set
2601		;
2602
2603filter_set	: prio {
2604			if (filter_opts.marker & FOM_SETPRIO) {
2605				yyerror("prio cannot be redefined");
2606				YYERROR;
2607			}
2608			filter_opts.marker |= FOM_SETPRIO;
2609			filter_opts.set_prio[0] = $1.b1;
2610			filter_opts.set_prio[1] = $1.b2;
2611		}
2612prio		: PRIO NUMBER {
2613			if ($2 < 0 || $2 > PF_PRIO_MAX) {
2614				yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2615				YYERROR;
2616			}
2617			$$.b1 = $$.b2 = $2;
2618		}
2619		| PRIO '(' NUMBER comma NUMBER ')' {
2620			if ($3 < 0 || $3 > PF_PRIO_MAX ||
2621			    $5 < 0 || $5 > PF_PRIO_MAX) {
2622				yyerror("prio must be 0 - %u", PF_PRIO_MAX);
2623				YYERROR;
2624			}
2625			$$.b1 = $3;
2626			$$.b2 = $5;
2627		}
2628		;
2629
2630probability	: STRING				{
2631			char	*e;
2632			double	 p = strtod($1, &e);
2633
2634			if (*e == '%') {
2635				p *= 0.01;
2636				e++;
2637			}
2638			if (*e) {
2639				yyerror("invalid probability: %s", $1);
2640				free($1);
2641				YYERROR;
2642			}
2643			free($1);
2644			$$ = p;
2645		}
2646		| NUMBER				{
2647			$$ = (double)$1;
2648		}
2649		;
2650
2651
2652action		: PASS 			{
2653			$$.b1 = PF_PASS;
2654			$$.b2 = failpolicy;
2655			$$.w = returnicmpdefault;
2656			$$.w2 = returnicmp6default;
2657		}
2658		| BLOCK blockspec	{ $$ = $2; $$.b1 = PF_DROP; }
2659		;
2660
2661blockspec	: /* empty */		{
2662			$$.b2 = blockpolicy;
2663			$$.w = returnicmpdefault;
2664			$$.w2 = returnicmp6default;
2665		}
2666		| DROP			{
2667			$$.b2 = PFRULE_DROP;
2668			$$.w = 0;
2669			$$.w2 = 0;
2670		}
2671		| RETURNRST		{
2672			$$.b2 = PFRULE_RETURNRST;
2673			$$.w = 0;
2674			$$.w2 = 0;
2675		}
2676		| RETURNRST '(' TTL NUMBER ')'	{
2677			if ($4 < 0 || $4 > 255) {
2678				yyerror("illegal ttl value %d", $4);
2679				YYERROR;
2680			}
2681			$$.b2 = PFRULE_RETURNRST;
2682			$$.w = $4;
2683			$$.w2 = 0;
2684		}
2685		| RETURNICMP		{
2686			$$.b2 = PFRULE_RETURNICMP;
2687			$$.w = returnicmpdefault;
2688			$$.w2 = returnicmp6default;
2689		}
2690		| RETURNICMP6		{
2691			$$.b2 = PFRULE_RETURNICMP;
2692			$$.w = returnicmpdefault;
2693			$$.w2 = returnicmp6default;
2694		}
2695		| RETURNICMP '(' reticmpspec ')'	{
2696			$$.b2 = PFRULE_RETURNICMP;
2697			$$.w = $3;
2698			$$.w2 = returnicmpdefault;
2699		}
2700		| RETURNICMP6 '(' reticmp6spec ')'	{
2701			$$.b2 = PFRULE_RETURNICMP;
2702			$$.w = returnicmpdefault;
2703			$$.w2 = $3;
2704		}
2705		| RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
2706			$$.b2 = PFRULE_RETURNICMP;
2707			$$.w = $3;
2708			$$.w2 = $5;
2709		}
2710		| RETURN {
2711			$$.b2 = PFRULE_RETURN;
2712			$$.w = returnicmpdefault;
2713			$$.w2 = returnicmp6default;
2714		}
2715		;
2716
2717reticmpspec	: STRING			{
2718			if (!($$ = parseicmpspec($1, AF_INET))) {
2719				free($1);
2720				YYERROR;
2721			}
2722			free($1);
2723		}
2724		| NUMBER			{
2725			u_int8_t		icmptype;
2726
2727			if ($1 < 0 || $1 > 255) {
2728				yyerror("invalid icmp code %lu", $1);
2729				YYERROR;
2730			}
2731			icmptype = returnicmpdefault >> 8;
2732			$$ = (icmptype << 8 | $1);
2733		}
2734		;
2735
2736reticmp6spec	: STRING			{
2737			if (!($$ = parseicmpspec($1, AF_INET6))) {
2738				free($1);
2739				YYERROR;
2740			}
2741			free($1);
2742		}
2743		| NUMBER			{
2744			u_int8_t		icmptype;
2745
2746			if ($1 < 0 || $1 > 255) {
2747				yyerror("invalid icmp code %lu", $1);
2748				YYERROR;
2749			}
2750			icmptype = returnicmp6default >> 8;
2751			$$ = (icmptype << 8 | $1);
2752		}
2753		;
2754
2755dir		: /* empty */			{ $$ = PF_INOUT; }
2756		| IN				{ $$ = PF_IN; }
2757		| OUT				{ $$ = PF_OUT; }
2758		;
2759
2760quick		: /* empty */			{ $$.quick = 0; }
2761		| QUICK				{ $$.quick = 1; }
2762		;
2763
2764logquick	: /* empty */	{ $$.log = 0; $$.quick = 0; $$.logif = 0; }
2765		| log		{ $$ = $1; $$.quick = 0; }
2766		| QUICK		{ $$.quick = 1; $$.log = 0; $$.logif = 0; }
2767		| log QUICK	{ $$ = $1; $$.quick = 1; }
2768		| QUICK log	{ $$ = $2; $$.quick = 1; }
2769		;
2770
2771log		: LOG			{ $$.log = PF_LOG; $$.logif = 0; }
2772		| LOG '(' logopts ')'	{
2773			$$.log = PF_LOG | $3.log;
2774			$$.logif = $3.logif;
2775		}
2776		;
2777
2778logopts		: logopt			{ $$ = $1; }
2779		| logopts comma logopt		{
2780			$$.log = $1.log | $3.log;
2781			$$.logif = $3.logif;
2782			if ($$.logif == 0)
2783				$$.logif = $1.logif;
2784		}
2785		;
2786
2787logopt		: ALL		{ $$.log = PF_LOG_ALL; $$.logif = 0; }
2788		| USER		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2789		| GROUP		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2790		| TO string	{
2791			const char	*errstr;
2792			u_int		 i;
2793
2794			$$.log = 0;
2795			if (strncmp($2, "pflog", 5)) {
2796				yyerror("%s: should be a pflog interface", $2);
2797				free($2);
2798				YYERROR;
2799			}
2800			i = strtonum($2 + 5, 0, 255, &errstr);
2801			if (errstr) {
2802				yyerror("%s: %s", $2, errstr);
2803				free($2);
2804				YYERROR;
2805			}
2806			free($2);
2807			$$.logif = i;
2808		}
2809		;
2810
2811interface	: /* empty */			{ $$ = NULL; }
2812		| ON if_item_not		{ $$ = $2; }
2813		| ON '{' optnl if_list '}'	{ $$ = $4; }
2814		;
2815
2816if_list		: if_item_not optnl		{ $$ = $1; }
2817		| if_list comma if_item_not optnl	{
2818			$1->tail->next = $3;
2819			$1->tail = $3;
2820			$$ = $1;
2821		}
2822		;
2823
2824if_item_not	: not if_item			{ $$ = $2; $$->not = $1; }
2825		;
2826
2827if_item		: STRING			{
2828			struct node_host	*n;
2829
2830			$$ = calloc(1, sizeof(struct node_if));
2831			if ($$ == NULL)
2832				err(1, "if_item: calloc");
2833			if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2834			    sizeof($$->ifname)) {
2835				free($1);
2836				free($$);
2837				yyerror("interface name too long");
2838				YYERROR;
2839			}
2840
2841			if ((n = ifa_exists($1)) != NULL)
2842				$$->ifa_flags = n->ifa_flags;
2843
2844			free($1);
2845			$$->not = 0;
2846			$$->next = NULL;
2847			$$->tail = $$;
2848		}
2849		;
2850
2851af		: /* empty */			{ $$ = 0; }
2852		| INET				{ $$ = AF_INET; }
2853		| INET6				{ $$ = AF_INET6; }
2854		;
2855
2856proto		: /* empty */				{ $$ = NULL; }
2857		| PROTO proto_item			{ $$ = $2; }
2858		| PROTO '{' optnl proto_list '}'	{ $$ = $4; }
2859		;
2860
2861proto_list	: proto_item optnl		{ $$ = $1; }
2862		| proto_list comma proto_item optnl	{
2863			$1->tail->next = $3;
2864			$1->tail = $3;
2865			$$ = $1;
2866		}
2867		;
2868
2869proto_item	: protoval			{
2870			u_int8_t	pr;
2871
2872			pr = (u_int8_t)$1;
2873			if (pr == 0) {
2874				yyerror("proto 0 cannot be used");
2875				YYERROR;
2876			}
2877			$$ = calloc(1, sizeof(struct node_proto));
2878			if ($$ == NULL)
2879				err(1, "proto_item: calloc");
2880			$$->proto = pr;
2881			$$->next = NULL;
2882			$$->tail = $$;
2883		}
2884		;
2885
2886protoval	: STRING			{
2887			struct protoent	*p;
2888
2889			p = getprotobyname($1);
2890			if (p == NULL) {
2891				yyerror("unknown protocol %s", $1);
2892				free($1);
2893				YYERROR;
2894			}
2895			$$ = p->p_proto;
2896			free($1);
2897		}
2898		| NUMBER			{
2899			if ($1 < 0 || $1 > 255) {
2900				yyerror("protocol outside range");
2901				YYERROR;
2902			}
2903		}
2904		;
2905
2906fromto		: ALL				{
2907			$$.src.host = NULL;
2908			$$.src.port = NULL;
2909			$$.dst.host = NULL;
2910			$$.dst.port = NULL;
2911			$$.src_os = NULL;
2912		}
2913		| from os to			{
2914			$$.src = $1;
2915			$$.src_os = $2;
2916			$$.dst = $3;
2917		}
2918		;
2919
2920os		: /* empty */			{ $$ = NULL; }
2921		| OS xos			{ $$ = $2; }
2922		| OS '{' optnl os_list '}'	{ $$ = $4; }
2923		;
2924
2925xos		: STRING {
2926			$$ = calloc(1, sizeof(struct node_os));
2927			if ($$ == NULL)
2928				err(1, "os: calloc");
2929			$$->os = $1;
2930			$$->tail = $$;
2931		}
2932		;
2933
2934os_list		: xos optnl 			{ $$ = $1; }
2935		| os_list comma xos optnl	{
2936			$1->tail->next = $3;
2937			$1->tail = $3;
2938			$$ = $1;
2939		}
2940		;
2941
2942from		: /* empty */			{
2943			$$.host = NULL;
2944			$$.port = NULL;
2945		}
2946		| FROM ipportspec		{
2947			$$ = $2;
2948		}
2949		;
2950
2951to		: /* empty */			{
2952			$$.host = NULL;
2953			$$.port = NULL;
2954		}
2955		| TO ipportspec		{
2956			if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
2957			    "not permitted in a destination address"))
2958				YYERROR;
2959			$$ = $2;
2960		}
2961		;
2962
2963ipportspec	: ipspec			{
2964			$$.host = $1;
2965			$$.port = NULL;
2966		}
2967		| ipspec PORT portspec		{
2968			$$.host = $1;
2969			$$.port = $3;
2970		}
2971		| PORT portspec			{
2972			$$.host = NULL;
2973			$$.port = $2;
2974		}
2975		;
2976
2977optnl		: '\n' optnl
2978		|
2979		;
2980
2981ipspec		: ANY				{ $$ = NULL; }
2982		| xhost				{ $$ = $1; }
2983		| '{' optnl host_list '}'	{ $$ = $3; }
2984		;
2985
2986toipspec	: TO ipspec			{ $$ = $2; }
2987		| /* empty */			{ $$ = NULL; }
2988		;
2989
2990host_list	: ipspec optnl			{ $$ = $1; }
2991		| host_list comma ipspec optnl	{
2992			if ($3 == NULL)
2993				$$ = $1;
2994			else if ($1 == NULL)
2995				$$ = $3;
2996			else {
2997				$1->tail->next = $3;
2998				$1->tail = $3->tail;
2999				$$ = $1;
3000			}
3001		}
3002		;
3003
3004xhost		: not host			{
3005			struct node_host	*n;
3006
3007			for (n = $2; n != NULL; n = n->next)
3008				n->not = $1;
3009			$$ = $2;
3010		}
3011		| not NOROUTE			{
3012			$$ = calloc(1, sizeof(struct node_host));
3013			if ($$ == NULL)
3014				err(1, "xhost: calloc");
3015			$$->addr.type = PF_ADDR_NOROUTE;
3016			$$->next = NULL;
3017			$$->not = $1;
3018			$$->tail = $$;
3019		}
3020		| not URPFFAILED		{
3021			$$ = calloc(1, sizeof(struct node_host));
3022			if ($$ == NULL)
3023				err(1, "xhost: calloc");
3024			$$->addr.type = PF_ADDR_URPFFAILED;
3025			$$->next = NULL;
3026			$$->not = $1;
3027			$$->tail = $$;
3028		}
3029		;
3030
3031host		: STRING			{
3032			if (($$ = host($1)) == NULL)	{
3033				/* error. "any" is handled elsewhere */
3034				free($1);
3035				yyerror("could not parse host specification");
3036				YYERROR;
3037			}
3038			free($1);
3039
3040		}
3041		| STRING '-' STRING		{
3042			struct node_host *b, *e;
3043
3044			if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
3045				free($1);
3046				free($3);
3047				yyerror("could not parse host specification");
3048				YYERROR;
3049			}
3050			if (b->af != e->af ||
3051			    b->addr.type != PF_ADDR_ADDRMASK ||
3052			    e->addr.type != PF_ADDR_ADDRMASK ||
3053			    unmask(&b->addr.v.a.mask, b->af) !=
3054			    (b->af == AF_INET ? 32 : 128) ||
3055			    unmask(&e->addr.v.a.mask, e->af) !=
3056			    (e->af == AF_INET ? 32 : 128) ||
3057			    b->next != NULL || b->not ||
3058			    e->next != NULL || e->not) {
3059				free(b);
3060				free(e);
3061				free($1);
3062				free($3);
3063				yyerror("invalid address range");
3064				YYERROR;
3065			}
3066			memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
3067			    sizeof(b->addr.v.a.mask));
3068			b->addr.type = PF_ADDR_RANGE;
3069			$$ = b;
3070			free(e);
3071			free($1);
3072			free($3);
3073		}
3074		| STRING '/' NUMBER		{
3075			char	*buf;
3076
3077			if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1)
3078				err(1, "host: asprintf");
3079			free($1);
3080			if (($$ = host(buf)) == NULL)	{
3081				/* error. "any" is handled elsewhere */
3082				free(buf);
3083				yyerror("could not parse host specification");
3084				YYERROR;
3085			}
3086			free(buf);
3087		}
3088		| NUMBER '/' NUMBER		{
3089			char	*buf;
3090
3091			/* ie. for 10/8 parsing */
3092#ifdef __FreeBSD__
3093			if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1)
3094#else
3095			if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
3096#endif
3097				err(1, "host: asprintf");
3098			if (($$ = host(buf)) == NULL)	{
3099				/* error. "any" is handled elsewhere */
3100				free(buf);
3101				yyerror("could not parse host specification");
3102				YYERROR;
3103			}
3104			free(buf);
3105		}
3106		| dynaddr
3107		| dynaddr '/' NUMBER		{
3108			struct node_host	*n;
3109
3110			if ($3 < 0 || $3 > 128) {
3111				yyerror("bit number too big");
3112				YYERROR;
3113			}
3114			$$ = $1;
3115			for (n = $1; n != NULL; n = n->next)
3116				set_ipmask(n, $3);
3117		}
3118		| '<' STRING '>'	{
3119			if (strlen($2) >= PF_TABLE_NAME_SIZE) {
3120				yyerror("table name '%s' too long", $2);
3121				free($2);
3122				YYERROR;
3123			}
3124			$$ = calloc(1, sizeof(struct node_host));
3125			if ($$ == NULL)
3126				err(1, "host: calloc");
3127			$$->addr.type = PF_ADDR_TABLE;
3128			if (strlcpy($$->addr.v.tblname, $2,
3129			    sizeof($$->addr.v.tblname)) >=
3130			    sizeof($$->addr.v.tblname))
3131				errx(1, "host: strlcpy");
3132			free($2);
3133			$$->next = NULL;
3134			$$->tail = $$;
3135		}
3136		;
3137
3138number		: NUMBER
3139		| STRING		{
3140			u_long	ulval;
3141
3142			if (atoul($1, &ulval) == -1) {
3143				yyerror("%s is not a number", $1);
3144				free($1);
3145				YYERROR;
3146			} else
3147				$$ = ulval;
3148			free($1);
3149		}
3150		;
3151
3152dynaddr		: '(' STRING ')'		{
3153			int	 flags = 0;
3154			char	*p, *op;
3155
3156			op = $2;
3157			if (!isalpha(op[0])) {
3158				yyerror("invalid interface name '%s'", op);
3159				free(op);
3160				YYERROR;
3161			}
3162			while ((p = strrchr($2, ':')) != NULL) {
3163				if (!strcmp(p+1, "network"))
3164					flags |= PFI_AFLAG_NETWORK;
3165				else if (!strcmp(p+1, "broadcast"))
3166					flags |= PFI_AFLAG_BROADCAST;
3167				else if (!strcmp(p+1, "peer"))
3168					flags |= PFI_AFLAG_PEER;
3169				else if (!strcmp(p+1, "0"))
3170					flags |= PFI_AFLAG_NOALIAS;
3171				else {
3172					yyerror("interface %s has bad modifier",
3173					    $2);
3174					free(op);
3175					YYERROR;
3176				}
3177				*p = '\0';
3178			}
3179			if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
3180				free(op);
3181				yyerror("illegal combination of "
3182				    "interface modifiers");
3183				YYERROR;
3184			}
3185			$$ = calloc(1, sizeof(struct node_host));
3186			if ($$ == NULL)
3187				err(1, "address: calloc");
3188			$$->af = 0;
3189			set_ipmask($$, 128);
3190			$$->addr.type = PF_ADDR_DYNIFTL;
3191			$$->addr.iflags = flags;
3192			if (strlcpy($$->addr.v.ifname, $2,
3193			    sizeof($$->addr.v.ifname)) >=
3194			    sizeof($$->addr.v.ifname)) {
3195				free(op);
3196				free($$);
3197				yyerror("interface name too long");
3198				YYERROR;
3199			}
3200			free(op);
3201			$$->next = NULL;
3202			$$->tail = $$;
3203		}
3204		;
3205
3206portspec	: port_item			{ $$ = $1; }
3207		| '{' optnl port_list '}'	{ $$ = $3; }
3208		;
3209
3210port_list	: port_item optnl		{ $$ = $1; }
3211		| port_list comma port_item optnl	{
3212			$1->tail->next = $3;
3213			$1->tail = $3;
3214			$$ = $1;
3215		}
3216		;
3217
3218port_item	: portrange			{
3219			$$ = calloc(1, sizeof(struct node_port));
3220			if ($$ == NULL)
3221				err(1, "port_item: calloc");
3222			$$->port[0] = $1.a;
3223			$$->port[1] = $1.b;
3224			if ($1.t)
3225				$$->op = PF_OP_RRG;
3226			else
3227				$$->op = PF_OP_EQ;
3228			$$->next = NULL;
3229			$$->tail = $$;
3230		}
3231		| unaryop portrange	{
3232			if ($2.t) {
3233				yyerror("':' cannot be used with an other "
3234				    "port operator");
3235				YYERROR;
3236			}
3237			$$ = calloc(1, sizeof(struct node_port));
3238			if ($$ == NULL)
3239				err(1, "port_item: calloc");
3240			$$->port[0] = $2.a;
3241			$$->port[1] = $2.b;
3242			$$->op = $1;
3243			$$->next = NULL;
3244			$$->tail = $$;
3245		}
3246		| portrange PORTBINARY portrange	{
3247			if ($1.t || $3.t) {
3248				yyerror("':' cannot be used with an other "
3249				    "port operator");
3250				YYERROR;
3251			}
3252			$$ = calloc(1, sizeof(struct node_port));
3253			if ($$ == NULL)
3254				err(1, "port_item: calloc");
3255			$$->port[0] = $1.a;
3256			$$->port[1] = $3.a;
3257			$$->op = $2;
3258			$$->next = NULL;
3259			$$->tail = $$;
3260		}
3261		;
3262
3263portplain	: numberstring			{
3264			if (parseport($1, &$$, 0) == -1) {
3265				free($1);
3266				YYERROR;
3267			}
3268			free($1);
3269		}
3270		;
3271
3272portrange	: numberstring			{
3273			if (parseport($1, &$$, PPORT_RANGE) == -1) {
3274				free($1);
3275				YYERROR;
3276			}
3277			free($1);
3278		}
3279		;
3280
3281uids		: uid_item			{ $$ = $1; }
3282		| '{' optnl uid_list '}'	{ $$ = $3; }
3283		;
3284
3285uid_list	: uid_item optnl		{ $$ = $1; }
3286		| uid_list comma uid_item optnl	{
3287			$1->tail->next = $3;
3288			$1->tail = $3;
3289			$$ = $1;
3290		}
3291		;
3292
3293uid_item	: uid				{
3294			$$ = calloc(1, sizeof(struct node_uid));
3295			if ($$ == NULL)
3296				err(1, "uid_item: calloc");
3297			$$->uid[0] = $1;
3298			$$->uid[1] = $1;
3299			$$->op = PF_OP_EQ;
3300			$$->next = NULL;
3301			$$->tail = $$;
3302		}
3303		| unaryop uid			{
3304			if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3305				yyerror("user unknown requires operator = or "
3306				    "!=");
3307				YYERROR;
3308			}
3309			$$ = calloc(1, sizeof(struct node_uid));
3310			if ($$ == NULL)
3311				err(1, "uid_item: calloc");
3312			$$->uid[0] = $2;
3313			$$->uid[1] = $2;
3314			$$->op = $1;
3315			$$->next = NULL;
3316			$$->tail = $$;
3317		}
3318		| uid PORTBINARY uid		{
3319			if ($1 == UID_MAX || $3 == UID_MAX) {
3320				yyerror("user unknown requires operator = or "
3321				    "!=");
3322				YYERROR;
3323			}
3324			$$ = calloc(1, sizeof(struct node_uid));
3325			if ($$ == NULL)
3326				err(1, "uid_item: calloc");
3327			$$->uid[0] = $1;
3328			$$->uid[1] = $3;
3329			$$->op = $2;
3330			$$->next = NULL;
3331			$$->tail = $$;
3332		}
3333		;
3334
3335uid		: STRING			{
3336			if (!strcmp($1, "unknown"))
3337				$$ = UID_MAX;
3338			else {
3339				struct passwd	*pw;
3340
3341				if ((pw = getpwnam($1)) == NULL) {
3342					yyerror("unknown user %s", $1);
3343					free($1);
3344					YYERROR;
3345				}
3346				$$ = pw->pw_uid;
3347			}
3348			free($1);
3349		}
3350		| NUMBER			{
3351			if ($1 < 0 || $1 >= UID_MAX) {
3352				yyerror("illegal uid value %lu", $1);
3353				YYERROR;
3354			}
3355			$$ = $1;
3356		}
3357		;
3358
3359gids		: gid_item			{ $$ = $1; }
3360		| '{' optnl gid_list '}'	{ $$ = $3; }
3361		;
3362
3363gid_list	: gid_item optnl		{ $$ = $1; }
3364		| gid_list comma gid_item optnl	{
3365			$1->tail->next = $3;
3366			$1->tail = $3;
3367			$$ = $1;
3368		}
3369		;
3370
3371gid_item	: gid				{
3372			$$ = calloc(1, sizeof(struct node_gid));
3373			if ($$ == NULL)
3374				err(1, "gid_item: calloc");
3375			$$->gid[0] = $1;
3376			$$->gid[1] = $1;
3377			$$->op = PF_OP_EQ;
3378			$$->next = NULL;
3379			$$->tail = $$;
3380		}
3381		| unaryop gid			{
3382			if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3383				yyerror("group unknown requires operator = or "
3384				    "!=");
3385				YYERROR;
3386			}
3387			$$ = calloc(1, sizeof(struct node_gid));
3388			if ($$ == NULL)
3389				err(1, "gid_item: calloc");
3390			$$->gid[0] = $2;
3391			$$->gid[1] = $2;
3392			$$->op = $1;
3393			$$->next = NULL;
3394			$$->tail = $$;
3395		}
3396		| gid PORTBINARY gid		{
3397			if ($1 == GID_MAX || $3 == GID_MAX) {
3398				yyerror("group unknown requires operator = or "
3399				    "!=");
3400				YYERROR;
3401			}
3402			$$ = calloc(1, sizeof(struct node_gid));
3403			if ($$ == NULL)
3404				err(1, "gid_item: calloc");
3405			$$->gid[0] = $1;
3406			$$->gid[1] = $3;
3407			$$->op = $2;
3408			$$->next = NULL;
3409			$$->tail = $$;
3410		}
3411		;
3412
3413gid		: STRING			{
3414			if (!strcmp($1, "unknown"))
3415				$$ = GID_MAX;
3416			else {
3417				struct group	*grp;
3418
3419				if ((grp = getgrnam($1)) == NULL) {
3420					yyerror("unknown group %s", $1);
3421					free($1);
3422					YYERROR;
3423				}
3424				$$ = grp->gr_gid;
3425			}
3426			free($1);
3427		}
3428		| NUMBER			{
3429			if ($1 < 0 || $1 >= GID_MAX) {
3430				yyerror("illegal gid value %lu", $1);
3431				YYERROR;
3432			}
3433			$$ = $1;
3434		}
3435		;
3436
3437flag		: STRING			{
3438			int	f;
3439
3440			if ((f = parse_flags($1)) < 0) {
3441				yyerror("bad flags %s", $1);
3442				free($1);
3443				YYERROR;
3444			}
3445			free($1);
3446			$$.b1 = f;
3447		}
3448		;
3449
3450flags		: FLAGS flag '/' flag	{ $$.b1 = $2.b1; $$.b2 = $4.b1; }
3451		| FLAGS '/' flag	{ $$.b1 = 0; $$.b2 = $3.b1; }
3452		| FLAGS ANY		{ $$.b1 = 0; $$.b2 = 0; }
3453		;
3454
3455icmpspec	: ICMPTYPE icmp_item			{ $$ = $2; }
3456		| ICMPTYPE '{' optnl icmp_list '}'	{ $$ = $4; }
3457		| ICMP6TYPE icmp6_item			{ $$ = $2; }
3458		| ICMP6TYPE '{' optnl icmp6_list '}'	{ $$ = $4; }
3459		;
3460
3461icmp_list	: icmp_item optnl		{ $$ = $1; }
3462		| icmp_list comma icmp_item optnl {
3463			$1->tail->next = $3;
3464			$1->tail = $3;
3465			$$ = $1;
3466		}
3467		;
3468
3469icmp6_list	: icmp6_item optnl		{ $$ = $1; }
3470		| icmp6_list comma icmp6_item optnl {
3471			$1->tail->next = $3;
3472			$1->tail = $3;
3473			$$ = $1;
3474		}
3475		;
3476
3477icmp_item	: icmptype		{
3478			$$ = calloc(1, sizeof(struct node_icmp));
3479			if ($$ == NULL)
3480				err(1, "icmp_item: calloc");
3481			$$->type = $1;
3482			$$->code = 0;
3483			$$->proto = IPPROTO_ICMP;
3484			$$->next = NULL;
3485			$$->tail = $$;
3486		}
3487		| icmptype CODE STRING	{
3488			const struct icmpcodeent	*p;
3489
3490			if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3491				yyerror("unknown icmp-code %s", $3);
3492				free($3);
3493				YYERROR;
3494			}
3495
3496			free($3);
3497			$$ = calloc(1, sizeof(struct node_icmp));
3498			if ($$ == NULL)
3499				err(1, "icmp_item: calloc");
3500			$$->type = $1;
3501			$$->code = p->code + 1;
3502			$$->proto = IPPROTO_ICMP;
3503			$$->next = NULL;
3504			$$->tail = $$;
3505		}
3506		| icmptype CODE NUMBER	{
3507			if ($3 < 0 || $3 > 255) {
3508				yyerror("illegal icmp-code %lu", $3);
3509				YYERROR;
3510			}
3511			$$ = calloc(1, sizeof(struct node_icmp));
3512			if ($$ == NULL)
3513				err(1, "icmp_item: calloc");
3514			$$->type = $1;
3515			$$->code = $3 + 1;
3516			$$->proto = IPPROTO_ICMP;
3517			$$->next = NULL;
3518			$$->tail = $$;
3519		}
3520		;
3521
3522icmp6_item	: icmp6type		{
3523			$$ = calloc(1, sizeof(struct node_icmp));
3524			if ($$ == NULL)
3525				err(1, "icmp_item: calloc");
3526			$$->type = $1;
3527			$$->code = 0;
3528			$$->proto = IPPROTO_ICMPV6;
3529			$$->next = NULL;
3530			$$->tail = $$;
3531		}
3532		| icmp6type CODE STRING	{
3533			const struct icmpcodeent	*p;
3534
3535			if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3536				yyerror("unknown icmp6-code %s", $3);
3537				free($3);
3538				YYERROR;
3539			}
3540			free($3);
3541
3542			$$ = calloc(1, sizeof(struct node_icmp));
3543			if ($$ == NULL)
3544				err(1, "icmp_item: calloc");
3545			$$->type = $1;
3546			$$->code = p->code + 1;
3547			$$->proto = IPPROTO_ICMPV6;
3548			$$->next = NULL;
3549			$$->tail = $$;
3550		}
3551		| icmp6type CODE NUMBER	{
3552			if ($3 < 0 || $3 > 255) {
3553				yyerror("illegal icmp-code %lu", $3);
3554				YYERROR;
3555			}
3556			$$ = calloc(1, sizeof(struct node_icmp));
3557			if ($$ == NULL)
3558				err(1, "icmp_item: calloc");
3559			$$->type = $1;
3560			$$->code = $3 + 1;
3561			$$->proto = IPPROTO_ICMPV6;
3562			$$->next = NULL;
3563			$$->tail = $$;
3564		}
3565		;
3566
3567icmptype	: STRING			{
3568			const struct icmptypeent	*p;
3569
3570			if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
3571				yyerror("unknown icmp-type %s", $1);
3572				free($1);
3573				YYERROR;
3574			}
3575			$$ = p->type + 1;
3576			free($1);
3577		}
3578		| NUMBER			{
3579			if ($1 < 0 || $1 > 255) {
3580				yyerror("illegal icmp-type %lu", $1);
3581				YYERROR;
3582			}
3583			$$ = $1 + 1;
3584		}
3585		;
3586
3587icmp6type	: STRING			{
3588			const struct icmptypeent	*p;
3589
3590			if ((p = geticmptypebyname($1, AF_INET6)) ==
3591			    NULL) {
3592				yyerror("unknown icmp6-type %s", $1);
3593				free($1);
3594				YYERROR;
3595			}
3596			$$ = p->type + 1;
3597			free($1);
3598		}
3599		| NUMBER			{
3600			if ($1 < 0 || $1 > 255) {
3601				yyerror("illegal icmp6-type %lu", $1);
3602				YYERROR;
3603			}
3604			$$ = $1 + 1;
3605		}
3606		;
3607
3608tos	: STRING			{
3609			if (!strcmp($1, "lowdelay"))
3610				$$ = IPTOS_LOWDELAY;
3611			else if (!strcmp($1, "throughput"))
3612				$$ = IPTOS_THROUGHPUT;
3613			else if (!strcmp($1, "reliability"))
3614				$$ = IPTOS_RELIABILITY;
3615			else if ($1[0] == '0' && $1[1] == 'x')
3616				$$ = strtoul($1, NULL, 16);
3617			else
3618				$$ = 256;		/* flag bad argument */
3619			if ($$ < 0 || $$ > 255) {
3620				yyerror("illegal tos value %s", $1);
3621				free($1);
3622				YYERROR;
3623			}
3624			free($1);
3625		}
3626		| NUMBER			{
3627			$$ = $1;
3628			if ($$ < 0 || $$ > 255) {
3629				yyerror("illegal tos value %s", $1);
3630				YYERROR;
3631			}
3632		}
3633		;
3634
3635sourcetrack	: SOURCETRACK		{ $$ = PF_SRCTRACK; }
3636		| SOURCETRACK GLOBAL	{ $$ = PF_SRCTRACK_GLOBAL; }
3637		| SOURCETRACK RULE	{ $$ = PF_SRCTRACK_RULE; }
3638		;
3639
3640statelock	: IFBOUND {
3641			$$ = PFRULE_IFBOUND;
3642		}
3643		| FLOATING {
3644			$$ = 0;
3645		}
3646		;
3647
3648keep		: NO STATE			{
3649			$$.action = 0;
3650			$$.options = NULL;
3651		}
3652		| KEEP STATE state_opt_spec	{
3653			$$.action = PF_STATE_NORMAL;
3654			$$.options = $3;
3655		}
3656		| MODULATE STATE state_opt_spec {
3657			$$.action = PF_STATE_MODULATE;
3658			$$.options = $3;
3659		}
3660		| SYNPROXY STATE state_opt_spec {
3661			$$.action = PF_STATE_SYNPROXY;
3662			$$.options = $3;
3663		}
3664		;
3665
3666flush		: /* empty */			{ $$ = 0; }
3667		| FLUSH				{ $$ = PF_FLUSH; }
3668		| FLUSH GLOBAL			{
3669			$$ = PF_FLUSH | PF_FLUSH_GLOBAL;
3670		}
3671		;
3672
3673state_opt_spec	: '(' state_opt_list ')'	{ $$ = $2; }
3674		| /* empty */			{ $$ = NULL; }
3675		;
3676
3677state_opt_list	: state_opt_item		{ $$ = $1; }
3678		| state_opt_list comma state_opt_item {
3679			$1->tail->next = $3;
3680			$1->tail = $3;
3681			$$ = $1;
3682		}
3683		;
3684
3685state_opt_item	: MAXIMUM NUMBER		{
3686			if ($2 < 0 || $2 > UINT_MAX) {
3687				yyerror("only positive values permitted");
3688				YYERROR;
3689			}
3690			$$ = calloc(1, sizeof(struct node_state_opt));
3691			if ($$ == NULL)
3692				err(1, "state_opt_item: calloc");
3693			$$->type = PF_STATE_OPT_MAX;
3694			$$->data.max_states = $2;
3695			$$->next = NULL;
3696			$$->tail = $$;
3697		}
3698		| NOSYNC				{
3699			$$ = calloc(1, sizeof(struct node_state_opt));
3700			if ($$ == NULL)
3701				err(1, "state_opt_item: calloc");
3702			$$->type = PF_STATE_OPT_NOSYNC;
3703			$$->next = NULL;
3704			$$->tail = $$;
3705		}
3706		| MAXSRCSTATES NUMBER			{
3707			if ($2 < 0 || $2 > UINT_MAX) {
3708				yyerror("only positive values permitted");
3709				YYERROR;
3710			}
3711			$$ = calloc(1, sizeof(struct node_state_opt));
3712			if ($$ == NULL)
3713				err(1, "state_opt_item: calloc");
3714			$$->type = PF_STATE_OPT_MAX_SRC_STATES;
3715			$$->data.max_src_states = $2;
3716			$$->next = NULL;
3717			$$->tail = $$;
3718		}
3719		| MAXSRCCONN NUMBER			{
3720			if ($2 < 0 || $2 > UINT_MAX) {
3721				yyerror("only positive values permitted");
3722				YYERROR;
3723			}
3724			$$ = calloc(1, sizeof(struct node_state_opt));
3725			if ($$ == NULL)
3726				err(1, "state_opt_item: calloc");
3727			$$->type = PF_STATE_OPT_MAX_SRC_CONN;
3728			$$->data.max_src_conn = $2;
3729			$$->next = NULL;
3730			$$->tail = $$;
3731		}
3732		| MAXSRCCONNRATE NUMBER '/' NUMBER	{
3733			if ($2 < 0 || $2 > UINT_MAX ||
3734			    $4 < 0 || $4 > UINT_MAX) {
3735				yyerror("only positive values permitted");
3736				YYERROR;
3737			}
3738			$$ = calloc(1, sizeof(struct node_state_opt));
3739			if ($$ == NULL)
3740				err(1, "state_opt_item: calloc");
3741			$$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
3742			$$->data.max_src_conn_rate.limit = $2;
3743			$$->data.max_src_conn_rate.seconds = $4;
3744			$$->next = NULL;
3745			$$->tail = $$;
3746		}
3747		| OVERLOAD '<' STRING '>' flush		{
3748			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
3749				yyerror("table name '%s' too long", $3);
3750				free($3);
3751				YYERROR;
3752			}
3753			$$ = calloc(1, sizeof(struct node_state_opt));
3754			if ($$ == NULL)
3755				err(1, "state_opt_item: calloc");
3756			if (strlcpy($$->data.overload.tblname, $3,
3757			    PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
3758				errx(1, "state_opt_item: strlcpy");
3759			free($3);
3760			$$->type = PF_STATE_OPT_OVERLOAD;
3761			$$->data.overload.flush = $5;
3762			$$->next = NULL;
3763			$$->tail = $$;
3764		}
3765		| MAXSRCNODES NUMBER			{
3766			if ($2 < 0 || $2 > UINT_MAX) {
3767				yyerror("only positive values permitted");
3768				YYERROR;
3769			}
3770			$$ = calloc(1, sizeof(struct node_state_opt));
3771			if ($$ == NULL)
3772				err(1, "state_opt_item: calloc");
3773			$$->type = PF_STATE_OPT_MAX_SRC_NODES;
3774			$$->data.max_src_nodes = $2;
3775			$$->next = NULL;
3776			$$->tail = $$;
3777		}
3778		| sourcetrack {
3779			$$ = calloc(1, sizeof(struct node_state_opt));
3780			if ($$ == NULL)
3781				err(1, "state_opt_item: calloc");
3782			$$->type = PF_STATE_OPT_SRCTRACK;
3783			$$->data.src_track = $1;
3784			$$->next = NULL;
3785			$$->tail = $$;
3786		}
3787		| statelock {
3788			$$ = calloc(1, sizeof(struct node_state_opt));
3789			if ($$ == NULL)
3790				err(1, "state_opt_item: calloc");
3791			$$->type = PF_STATE_OPT_STATELOCK;
3792			$$->data.statelock = $1;
3793			$$->next = NULL;
3794			$$->tail = $$;
3795		}
3796		| SLOPPY {
3797			$$ = calloc(1, sizeof(struct node_state_opt));
3798			if ($$ == NULL)
3799				err(1, "state_opt_item: calloc");
3800			$$->type = PF_STATE_OPT_SLOPPY;
3801			$$->next = NULL;
3802			$$->tail = $$;
3803		}
3804		| STRING NUMBER			{
3805			int	i;
3806
3807			if ($2 < 0 || $2 > UINT_MAX) {
3808				yyerror("only positive values permitted");
3809				YYERROR;
3810			}
3811			for (i = 0; pf_timeouts[i].name &&
3812			    strcmp(pf_timeouts[i].name, $1); ++i)
3813				;	/* nothing */
3814			if (!pf_timeouts[i].name) {
3815				yyerror("illegal timeout name %s", $1);
3816				free($1);
3817				YYERROR;
3818			}
3819			if (strchr(pf_timeouts[i].name, '.') == NULL) {
3820				yyerror("illegal state timeout %s", $1);
3821				free($1);
3822				YYERROR;
3823			}
3824			free($1);
3825			$$ = calloc(1, sizeof(struct node_state_opt));
3826			if ($$ == NULL)
3827				err(1, "state_opt_item: calloc");
3828			$$->type = PF_STATE_OPT_TIMEOUT;
3829			$$->data.timeout.number = pf_timeouts[i].timeout;
3830			$$->data.timeout.seconds = $2;
3831			$$->next = NULL;
3832			$$->tail = $$;
3833		}
3834		;
3835
3836label		: LABEL STRING			{
3837			$$ = $2;
3838		}
3839		;
3840
3841qname		: QUEUE STRING				{
3842			$$.qname = $2;
3843			$$.pqname = NULL;
3844		}
3845		| QUEUE '(' STRING ')'			{
3846			$$.qname = $3;
3847			$$.pqname = NULL;
3848		}
3849		| QUEUE '(' STRING comma STRING ')'	{
3850			$$.qname = $3;
3851			$$.pqname = $5;
3852		}
3853		;
3854
3855no		: /* empty */			{ $$ = 0; }
3856		| NO				{ $$ = 1; }
3857		;
3858
3859portstar	: numberstring			{
3860			if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
3861				free($1);
3862				YYERROR;
3863			}
3864			free($1);
3865		}
3866		;
3867
3868redirspec	: host				{ $$ = $1; }
3869		| '{' optnl redir_host_list '}'	{ $$ = $3; }
3870		;
3871
3872redir_host_list	: host optnl			{ $$ = $1; }
3873		| redir_host_list comma host optnl {
3874			$1->tail->next = $3;
3875			$1->tail = $3->tail;
3876			$$ = $1;
3877		}
3878		;
3879
3880redirpool	: /* empty */			{ $$ = NULL; }
3881		| ARROW redirspec		{
3882			$$ = calloc(1, sizeof(struct redirection));
3883			if ($$ == NULL)
3884				err(1, "redirection: calloc");
3885			$$->host = $2;
3886			$$->rport.a = $$->rport.b = $$->rport.t = 0;
3887		}
3888		| ARROW redirspec PORT portstar	{
3889			$$ = calloc(1, sizeof(struct redirection));
3890			if ($$ == NULL)
3891				err(1, "redirection: calloc");
3892			$$->host = $2;
3893			$$->rport = $4;
3894		}
3895		;
3896
3897hashkey		: /* empty */
3898		{
3899			$$ = calloc(1, sizeof(struct pf_poolhashkey));
3900			if ($$ == NULL)
3901				err(1, "hashkey: calloc");
3902			$$->key32[0] = arc4random();
3903			$$->key32[1] = arc4random();
3904			$$->key32[2] = arc4random();
3905			$$->key32[3] = arc4random();
3906		}
3907		| string
3908		{
3909			if (!strncmp($1, "0x", 2)) {
3910				if (strlen($1) != 34) {
3911					free($1);
3912					yyerror("hex key must be 128 bits "
3913						"(32 hex digits) long");
3914					YYERROR;
3915				}
3916				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3917				if ($$ == NULL)
3918					err(1, "hashkey: calloc");
3919
3920				if (sscanf($1, "0x%8x%8x%8x%8x",
3921				    &$$->key32[0], &$$->key32[1],
3922				    &$$->key32[2], &$$->key32[3]) != 4) {
3923					free($$);
3924					free($1);
3925					yyerror("invalid hex key");
3926					YYERROR;
3927				}
3928			} else {
3929				MD5_CTX	context;
3930
3931				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3932				if ($$ == NULL)
3933					err(1, "hashkey: calloc");
3934				MD5Init(&context);
3935				MD5Update(&context, (unsigned char *)$1,
3936				    strlen($1));
3937				MD5Final((unsigned char *)$$, &context);
3938				HTONL($$->key32[0]);
3939				HTONL($$->key32[1]);
3940				HTONL($$->key32[2]);
3941				HTONL($$->key32[3]);
3942			}
3943			free($1);
3944		}
3945		;
3946
3947pool_opts	:	{ bzero(&pool_opts, sizeof pool_opts); }
3948		    pool_opts_l
3949			{ $$ = pool_opts; }
3950		| /* empty */	{
3951			bzero(&pool_opts, sizeof pool_opts);
3952			$$ = pool_opts;
3953		}
3954		;
3955
3956pool_opts_l	: pool_opts_l pool_opt
3957		| pool_opt
3958		;
3959
3960pool_opt	: BITMASK	{
3961			if (pool_opts.type) {
3962				yyerror("pool type cannot be redefined");
3963				YYERROR;
3964			}
3965			pool_opts.type =  PF_POOL_BITMASK;
3966		}
3967		| RANDOM	{
3968			if (pool_opts.type) {
3969				yyerror("pool type cannot be redefined");
3970				YYERROR;
3971			}
3972			pool_opts.type = PF_POOL_RANDOM;
3973		}
3974		| SOURCEHASH hashkey {
3975			if (pool_opts.type) {
3976				yyerror("pool type cannot be redefined");
3977				YYERROR;
3978			}
3979			pool_opts.type = PF_POOL_SRCHASH;
3980			pool_opts.key = $2;
3981		}
3982		| ROUNDROBIN	{
3983			if (pool_opts.type) {
3984				yyerror("pool type cannot be redefined");
3985				YYERROR;
3986			}
3987			pool_opts.type = PF_POOL_ROUNDROBIN;
3988		}
3989		| STATICPORT	{
3990			if (pool_opts.staticport) {
3991				yyerror("static-port cannot be redefined");
3992				YYERROR;
3993			}
3994			pool_opts.staticport = 1;
3995		}
3996		| STICKYADDRESS	{
3997			if (filter_opts.marker & POM_STICKYADDRESS) {
3998				yyerror("sticky-address cannot be redefined");
3999				YYERROR;
4000			}
4001			pool_opts.marker |= POM_STICKYADDRESS;
4002			pool_opts.opts |= PF_POOL_STICKYADDR;
4003		}
4004		;
4005
4006redirection	: /* empty */			{ $$ = NULL; }
4007		| ARROW host			{
4008			$$ = calloc(1, sizeof(struct redirection));
4009			if ($$ == NULL)
4010				err(1, "redirection: calloc");
4011			$$->host = $2;
4012			$$->rport.a = $$->rport.b = $$->rport.t = 0;
4013		}
4014		| ARROW host PORT portstar	{
4015			$$ = calloc(1, sizeof(struct redirection));
4016			if ($$ == NULL)
4017				err(1, "redirection: calloc");
4018			$$->host = $2;
4019			$$->rport = $4;
4020		}
4021		;
4022
4023natpasslog	: /* empty */	{ $$.b1 = $$.b2 = 0; $$.w2 = 0; }
4024		| PASS		{ $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; }
4025		| PASS log	{ $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; }
4026		| log		{ $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; }
4027		;
4028
4029nataction	: no NAT natpasslog {
4030			if ($1 && $3.b1) {
4031				yyerror("\"pass\" not valid with \"no\"");
4032				YYERROR;
4033			}
4034			if ($1)
4035				$$.b1 = PF_NONAT;
4036			else
4037				$$.b1 = PF_NAT;
4038			$$.b2 = $3.b1;
4039			$$.w = $3.b2;
4040			$$.w2 = $3.w2;
4041		}
4042		| no RDR natpasslog {
4043			if ($1 && $3.b1) {
4044				yyerror("\"pass\" not valid with \"no\"");
4045				YYERROR;
4046			}
4047			if ($1)
4048				$$.b1 = PF_NORDR;
4049			else
4050				$$.b1 = PF_RDR;
4051			$$.b2 = $3.b1;
4052			$$.w = $3.b2;
4053			$$.w2 = $3.w2;
4054		}
4055		;
4056
4057natrule		: nataction interface af proto fromto tag tagged rtable
4058		    redirpool pool_opts
4059		{
4060			struct pf_rule	r;
4061
4062			if (check_rulestate(PFCTL_STATE_NAT))
4063				YYERROR;
4064
4065			memset(&r, 0, sizeof(r));
4066
4067			r.action = $1.b1;
4068			r.natpass = $1.b2;
4069			r.log = $1.w;
4070			r.logif = $1.w2;
4071			r.af = $3;
4072
4073			if (!r.af) {
4074				if ($5.src.host && $5.src.host->af &&
4075				    !$5.src.host->ifindex)
4076					r.af = $5.src.host->af;
4077				else if ($5.dst.host && $5.dst.host->af &&
4078				    !$5.dst.host->ifindex)
4079					r.af = $5.dst.host->af;
4080			}
4081
4082			if ($6 != NULL)
4083				if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >=
4084				    PF_TAG_NAME_SIZE) {
4085					yyerror("tag too long, max %u chars",
4086					    PF_TAG_NAME_SIZE - 1);
4087					YYERROR;
4088				}
4089
4090			if ($7.name)
4091				if (strlcpy(r.match_tagname, $7.name,
4092				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4093					yyerror("tag too long, max %u chars",
4094					    PF_TAG_NAME_SIZE - 1);
4095					YYERROR;
4096				}
4097			r.match_tag_not = $7.neg;
4098			r.rtableid = $8;
4099
4100			if (r.action == PF_NONAT || r.action == PF_NORDR) {
4101				if ($9 != NULL) {
4102					yyerror("translation rule with 'no' "
4103					    "does not need '->'");
4104					YYERROR;
4105				}
4106			} else {
4107				if ($9 == NULL || $9->host == NULL) {
4108					yyerror("translation rule requires '-> "
4109					    "address'");
4110					YYERROR;
4111				}
4112				if (!r.af && ! $9->host->ifindex)
4113					r.af = $9->host->af;
4114
4115				remove_invalid_hosts(&$9->host, &r.af);
4116				if (invalid_redirect($9->host, r.af))
4117					YYERROR;
4118				if (check_netmask($9->host, r.af))
4119					YYERROR;
4120
4121				r.rpool.proxy_port[0] = ntohs($9->rport.a);
4122
4123				switch (r.action) {
4124				case PF_RDR:
4125					if (!$9->rport.b && $9->rport.t &&
4126					    $5.dst.port != NULL) {
4127						r.rpool.proxy_port[1] =
4128						    ntohs($9->rport.a) +
4129						    (ntohs(
4130						    $5.dst.port->port[1]) -
4131						    ntohs(
4132						    $5.dst.port->port[0]));
4133					} else
4134						r.rpool.proxy_port[1] =
4135						    ntohs($9->rport.b);
4136					break;
4137				case PF_NAT:
4138					r.rpool.proxy_port[1] =
4139					    ntohs($9->rport.b);
4140					if (!r.rpool.proxy_port[0] &&
4141					    !r.rpool.proxy_port[1]) {
4142						r.rpool.proxy_port[0] =
4143						    PF_NAT_PROXY_PORT_LOW;
4144						r.rpool.proxy_port[1] =
4145						    PF_NAT_PROXY_PORT_HIGH;
4146					} else if (!r.rpool.proxy_port[1])
4147						r.rpool.proxy_port[1] =
4148						    r.rpool.proxy_port[0];
4149					break;
4150				default:
4151					break;
4152				}
4153
4154				r.rpool.opts = $10.type;
4155				if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
4156				    PF_POOL_NONE && ($9->host->next != NULL ||
4157				    $9->host->addr.type == PF_ADDR_TABLE ||
4158				    DYNIF_MULTIADDR($9->host->addr)))
4159					r.rpool.opts = PF_POOL_ROUNDROBIN;
4160				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4161				    PF_POOL_ROUNDROBIN &&
4162				    disallow_table($9->host, "tables are only "
4163				    "supported in round-robin redirection "
4164				    "pools"))
4165					YYERROR;
4166				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4167				    PF_POOL_ROUNDROBIN &&
4168				    disallow_alias($9->host, "interface (%s) "
4169				    "is only supported in round-robin "
4170				    "redirection pools"))
4171					YYERROR;
4172				if ($9->host->next != NULL) {
4173					if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4174					    PF_POOL_ROUNDROBIN) {
4175						yyerror("only round-robin "
4176						    "valid for multiple "
4177						    "redirection addresses");
4178						YYERROR;
4179					}
4180				}
4181			}
4182
4183			if ($10.key != NULL)
4184				memcpy(&r.rpool.key, $10.key,
4185				    sizeof(struct pf_poolhashkey));
4186
4187			 if ($10.opts)
4188				r.rpool.opts |= $10.opts;
4189
4190			if ($10.staticport) {
4191				if (r.action != PF_NAT) {
4192					yyerror("the 'static-port' option is "
4193					    "only valid with nat rules");
4194					YYERROR;
4195				}
4196				if (r.rpool.proxy_port[0] !=
4197				    PF_NAT_PROXY_PORT_LOW &&
4198				    r.rpool.proxy_port[1] !=
4199				    PF_NAT_PROXY_PORT_HIGH) {
4200					yyerror("the 'static-port' option can't"
4201					    " be used when specifying a port"
4202					    " range");
4203					YYERROR;
4204				}
4205				r.rpool.proxy_port[0] = 0;
4206				r.rpool.proxy_port[1] = 0;
4207			}
4208
4209			expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4,
4210			    $5.src_os, $5.src.host, $5.src.port, $5.dst.host,
4211			    $5.dst.port, 0, 0, 0, "");
4212			free($9);
4213		}
4214		;
4215
4216binatrule	: no BINAT natpasslog interface af proto FROM ipspec toipspec tag
4217		    tagged rtable redirection
4218		{
4219			struct pf_rule		binat;
4220			struct pf_pooladdr	*pa;
4221
4222			if (check_rulestate(PFCTL_STATE_NAT))
4223				YYERROR;
4224			if (disallow_urpf_failed($9, "\"urpf-failed\" is not "
4225			    "permitted as a binat destination"))
4226				YYERROR;
4227
4228			memset(&binat, 0, sizeof(binat));
4229
4230			if ($1 && $3.b1) {
4231				yyerror("\"pass\" not valid with \"no\"");
4232				YYERROR;
4233			}
4234			if ($1)
4235				binat.action = PF_NOBINAT;
4236			else
4237				binat.action = PF_BINAT;
4238			binat.natpass = $3.b1;
4239			binat.log = $3.b2;
4240			binat.logif = $3.w2;
4241			binat.af = $5;
4242			if (!binat.af && $8 != NULL && $8->af)
4243				binat.af = $8->af;
4244			if (!binat.af && $9 != NULL && $9->af)
4245				binat.af = $9->af;
4246
4247			if (!binat.af && $13 != NULL && $13->host)
4248				binat.af = $13->host->af;
4249			if (!binat.af) {
4250				yyerror("address family (inet/inet6) "
4251				    "undefined");
4252				YYERROR;
4253			}
4254
4255			if ($4 != NULL) {
4256				memcpy(binat.ifname, $4->ifname,
4257				    sizeof(binat.ifname));
4258				binat.ifnot = $4->not;
4259				free($4);
4260			}
4261
4262			if ($10 != NULL)
4263				if (strlcpy(binat.tagname, $10,
4264				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4265					yyerror("tag too long, max %u chars",
4266					    PF_TAG_NAME_SIZE - 1);
4267					YYERROR;
4268				}
4269			if ($11.name)
4270				if (strlcpy(binat.match_tagname, $11.name,
4271				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4272					yyerror("tag too long, max %u chars",
4273					    PF_TAG_NAME_SIZE - 1);
4274					YYERROR;
4275				}
4276			binat.match_tag_not = $11.neg;
4277			binat.rtableid = $12;
4278
4279			if ($6 != NULL) {
4280				binat.proto = $6->proto;
4281				free($6);
4282			}
4283
4284			if ($8 != NULL && disallow_table($8, "invalid use of "
4285			    "table <%s> as the source address of a binat rule"))
4286				YYERROR;
4287			if ($8 != NULL && disallow_alias($8, "invalid use of "
4288			    "interface (%s) as the source address of a binat "
4289			    "rule"))
4290				YYERROR;
4291			if ($13 != NULL && $13->host != NULL && disallow_table(
4292			    $13->host, "invalid use of table <%s> as the "
4293			    "redirect address of a binat rule"))
4294				YYERROR;
4295			if ($13 != NULL && $13->host != NULL && disallow_alias(
4296			    $13->host, "invalid use of interface (%s) as the "
4297			    "redirect address of a binat rule"))
4298				YYERROR;
4299
4300			if ($8 != NULL) {
4301				if ($8->next) {
4302					yyerror("multiple binat ip addresses");
4303					YYERROR;
4304				}
4305				if ($8->addr.type == PF_ADDR_DYNIFTL)
4306					$8->af = binat.af;
4307				if ($8->af != binat.af) {
4308					yyerror("binat ip versions must match");
4309					YYERROR;
4310				}
4311				if (check_netmask($8, binat.af))
4312					YYERROR;
4313				memcpy(&binat.src.addr, &$8->addr,
4314				    sizeof(binat.src.addr));
4315				free($8);
4316			}
4317			if ($9 != NULL) {
4318				if ($9->next) {
4319					yyerror("multiple binat ip addresses");
4320					YYERROR;
4321				}
4322				if ($9->af != binat.af && $9->af) {
4323					yyerror("binat ip versions must match");
4324					YYERROR;
4325				}
4326				if (check_netmask($9, binat.af))
4327					YYERROR;
4328				memcpy(&binat.dst.addr, &$9->addr,
4329				    sizeof(binat.dst.addr));
4330				binat.dst.neg = $9->not;
4331				free($9);
4332			}
4333
4334			if (binat.action == PF_NOBINAT) {
4335				if ($13 != NULL) {
4336					yyerror("'no binat' rule does not need"
4337					    " '->'");
4338					YYERROR;
4339				}
4340			} else {
4341				if ($13 == NULL || $13->host == NULL) {
4342					yyerror("'binat' rule requires"
4343					    " '-> address'");
4344					YYERROR;
4345				}
4346
4347				remove_invalid_hosts(&$13->host, &binat.af);
4348				if (invalid_redirect($13->host, binat.af))
4349					YYERROR;
4350				if ($13->host->next != NULL) {
4351					yyerror("binat rule must redirect to "
4352					    "a single address");
4353					YYERROR;
4354				}
4355				if (check_netmask($13->host, binat.af))
4356					YYERROR;
4357
4358				if (!PF_AZERO(&binat.src.addr.v.a.mask,
4359				    binat.af) &&
4360				    !PF_AEQ(&binat.src.addr.v.a.mask,
4361				    &$13->host->addr.v.a.mask, binat.af)) {
4362					yyerror("'binat' source mask and "
4363					    "redirect mask must be the same");
4364					YYERROR;
4365				}
4366
4367				TAILQ_INIT(&binat.rpool.list);
4368				pa = calloc(1, sizeof(struct pf_pooladdr));
4369				if (pa == NULL)
4370					err(1, "binat: calloc");
4371				pa->addr = $13->host->addr;
4372				pa->ifname[0] = 0;
4373				TAILQ_INSERT_TAIL(&binat.rpool.list,
4374				    pa, entries);
4375
4376				free($13);
4377			}
4378
4379			pfctl_add_rule(pf, &binat, "");
4380		}
4381		;
4382
4383tag		: /* empty */		{ $$ = NULL; }
4384		| TAG STRING		{ $$ = $2; }
4385		;
4386
4387tagged		: /* empty */		{ $$.neg = 0; $$.name = NULL; }
4388		| not TAGGED string	{ $$.neg = $1; $$.name = $3; }
4389		;
4390
4391rtable		: /* empty */		{ $$ = -1; }
4392		| RTABLE NUMBER		{
4393			if ($2 < 0 || $2 > rt_tableid_max()) {
4394				yyerror("invalid rtable id");
4395				YYERROR;
4396			}
4397			$$ = $2;
4398		}
4399		;
4400
4401route_host	: STRING			{
4402			$$ = calloc(1, sizeof(struct node_host));
4403			if ($$ == NULL)
4404				err(1, "route_host: calloc");
4405			$$->ifname = strdup($1);
4406			set_ipmask($$, 128);
4407			$$->next = NULL;
4408			$$->tail = $$;
4409		}
4410		| '(' STRING host ')'		{
4411			struct node_host *n;
4412
4413			$$ = $3;
4414			for (n = $3; n != NULL; n = n->next)
4415				n->ifname = strdup($2);
4416		}
4417		;
4418
4419route_host_list	: route_host optnl			{ $$ = $1; }
4420		| route_host_list comma route_host optnl {
4421			if ($1->af == 0)
4422				$1->af = $3->af;
4423			if ($1->af != $3->af) {
4424				yyerror("all pool addresses must be in the "
4425				    "same address family");
4426				YYERROR;
4427			}
4428			$1->tail->next = $3;
4429			$1->tail = $3->tail;
4430			$$ = $1;
4431		}
4432		;
4433
4434routespec	: route_host			{ $$ = $1; }
4435		| '{' optnl route_host_list '}'	{ $$ = $3; }
4436		;
4437
4438route		: /* empty */			{
4439			$$.host = NULL;
4440			$$.rt = 0;
4441			$$.pool_opts = 0;
4442		}
4443		| FASTROUTE {
4444			$$.host = NULL;
4445			$$.rt = PF_FASTROUTE;
4446			$$.pool_opts = 0;
4447		}
4448		| ROUTETO routespec pool_opts {
4449			$$.host = $2;
4450			$$.rt = PF_ROUTETO;
4451			$$.pool_opts = $3.type | $3.opts;
4452			if ($3.key != NULL)
4453				$$.key = $3.key;
4454		}
4455		| REPLYTO routespec pool_opts {
4456			$$.host = $2;
4457			$$.rt = PF_REPLYTO;
4458			$$.pool_opts = $3.type | $3.opts;
4459			if ($3.key != NULL)
4460				$$.key = $3.key;
4461		}
4462		| DUPTO routespec pool_opts {
4463			$$.host = $2;
4464			$$.rt = PF_DUPTO;
4465			$$.pool_opts = $3.type | $3.opts;
4466			if ($3.key != NULL)
4467				$$.key = $3.key;
4468		}
4469		;
4470
4471timeout_spec	: STRING NUMBER
4472		{
4473			if (check_rulestate(PFCTL_STATE_OPTION)) {
4474				free($1);
4475				YYERROR;
4476			}
4477			if ($2 < 0 || $2 > UINT_MAX) {
4478				yyerror("only positive values permitted");
4479				YYERROR;
4480			}
4481			if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
4482				yyerror("unknown timeout %s", $1);
4483				free($1);
4484				YYERROR;
4485			}
4486			free($1);
4487		}
4488		| INTERVAL NUMBER		{
4489			if (check_rulestate(PFCTL_STATE_OPTION))
4490				YYERROR;
4491			if ($2 < 0 || $2 > UINT_MAX) {
4492				yyerror("only positive values permitted");
4493				YYERROR;
4494			}
4495			if (pfctl_set_timeout(pf, "interval", $2, 0) != 0)
4496				YYERROR;
4497		}
4498		;
4499
4500timeout_list	: timeout_list comma timeout_spec optnl
4501		| timeout_spec optnl
4502		;
4503
4504limit_spec	: STRING NUMBER
4505		{
4506			if (check_rulestate(PFCTL_STATE_OPTION)) {
4507				free($1);
4508				YYERROR;
4509			}
4510			if ($2 < 0 || $2 > UINT_MAX) {
4511				yyerror("only positive values permitted");
4512				YYERROR;
4513			}
4514			if (pfctl_set_limit(pf, $1, $2) != 0) {
4515				yyerror("unable to set limit %s %u", $1, $2);
4516				free($1);
4517				YYERROR;
4518			}
4519			free($1);
4520		}
4521		;
4522
4523limit_list	: limit_list comma limit_spec optnl
4524		| limit_spec optnl
4525		;
4526
4527comma		: ','
4528		| /* empty */
4529		;
4530
4531yesno		: NO			{ $$ = 0; }
4532		| STRING		{
4533			if (!strcmp($1, "yes"))
4534				$$ = 1;
4535			else {
4536				yyerror("invalid value '%s', expected 'yes' "
4537				    "or 'no'", $1);
4538				free($1);
4539				YYERROR;
4540			}
4541			free($1);
4542		}
4543		;
4544
4545unaryop		: '='		{ $$ = PF_OP_EQ; }
4546		| '!' '='	{ $$ = PF_OP_NE; }
4547		| '<' '='	{ $$ = PF_OP_LE; }
4548		| '<'		{ $$ = PF_OP_LT; }
4549		| '>' '='	{ $$ = PF_OP_GE; }
4550		| '>'		{ $$ = PF_OP_GT; }
4551		;
4552
4553%%
4554
4555int
4556yyerror(const char *fmt, ...)
4557{
4558	va_list		 ap;
4559
4560	file->errors++;
4561	va_start(ap, fmt);
4562	fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
4563	vfprintf(stderr, fmt, ap);
4564	fprintf(stderr, "\n");
4565	va_end(ap);
4566	return (0);
4567}
4568
4569int
4570disallow_table(struct node_host *h, const char *fmt)
4571{
4572	for (; h != NULL; h = h->next)
4573		if (h->addr.type == PF_ADDR_TABLE) {
4574			yyerror(fmt, h->addr.v.tblname);
4575			return (1);
4576		}
4577	return (0);
4578}
4579
4580int
4581disallow_urpf_failed(struct node_host *h, const char *fmt)
4582{
4583	for (; h != NULL; h = h->next)
4584		if (h->addr.type == PF_ADDR_URPFFAILED) {
4585			yyerror(fmt);
4586			return (1);
4587		}
4588	return (0);
4589}
4590
4591int
4592disallow_alias(struct node_host *h, const char *fmt)
4593{
4594	for (; h != NULL; h = h->next)
4595		if (DYNIF_MULTIADDR(h->addr)) {
4596			yyerror(fmt, h->addr.v.tblname);
4597			return (1);
4598		}
4599	return (0);
4600}
4601
4602int
4603rule_consistent(struct pf_rule *r, int anchor_call)
4604{
4605	int	problems = 0;
4606
4607	switch (r->action) {
4608	case PF_PASS:
4609	case PF_DROP:
4610	case PF_SCRUB:
4611	case PF_NOSCRUB:
4612		problems = filter_consistent(r, anchor_call);
4613		break;
4614	case PF_NAT:
4615	case PF_NONAT:
4616		problems = nat_consistent(r);
4617		break;
4618	case PF_RDR:
4619	case PF_NORDR:
4620		problems = rdr_consistent(r);
4621		break;
4622	case PF_BINAT:
4623	case PF_NOBINAT:
4624	default:
4625		break;
4626	}
4627	return (problems);
4628}
4629
4630int
4631filter_consistent(struct pf_rule *r, int anchor_call)
4632{
4633	int	problems = 0;
4634
4635	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
4636	    (r->src.port_op || r->dst.port_op)) {
4637		yyerror("port only applies to tcp/udp");
4638		problems++;
4639	}
4640	if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
4641	    (r->type || r->code)) {
4642		yyerror("icmp-type/code only applies to icmp");
4643		problems++;
4644	}
4645	if (!r->af && (r->type || r->code)) {
4646		yyerror("must indicate address family with icmp-type/code");
4647		problems++;
4648	}
4649	if (r->overload_tblname[0] &&
4650	    r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
4651		yyerror("'overload' requires 'max-src-conn' "
4652		    "or 'max-src-conn-rate'");
4653		problems++;
4654	}
4655	if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
4656	    (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
4657		yyerror("proto %s doesn't match address family %s",
4658		    r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
4659		    r->af == AF_INET ? "inet" : "inet6");
4660		problems++;
4661	}
4662	if (r->allow_opts && r->action != PF_PASS) {
4663		yyerror("allow-opts can only be specified for pass rules");
4664		problems++;
4665	}
4666	if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
4667	    r->dst.port_op || r->flagset || r->type || r->code)) {
4668		yyerror("fragments can be filtered only on IP header fields");
4669		problems++;
4670	}
4671	if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
4672		yyerror("return-rst can only be applied to TCP rules");
4673		problems++;
4674	}
4675	if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
4676		yyerror("max-src-nodes requires 'source-track rule'");
4677		problems++;
4678	}
4679	if (r->action == PF_DROP && r->keep_state) {
4680		yyerror("keep state on block rules doesn't make sense");
4681		problems++;
4682	}
4683	if (r->rule_flag & PFRULE_STATESLOPPY &&
4684	    (r->keep_state == PF_STATE_MODULATE ||
4685	    r->keep_state == PF_STATE_SYNPROXY)) {
4686		yyerror("sloppy state matching cannot be used with "
4687		    "synproxy state or modulate state");
4688		problems++;
4689	}
4690	return (-problems);
4691}
4692
4693int
4694nat_consistent(struct pf_rule *r)
4695{
4696	return (0);	/* yeah! */
4697}
4698
4699int
4700rdr_consistent(struct pf_rule *r)
4701{
4702	int			 problems = 0;
4703
4704	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) {
4705		if (r->src.port_op) {
4706			yyerror("src port only applies to tcp/udp");
4707			problems++;
4708		}
4709		if (r->dst.port_op) {
4710			yyerror("dst port only applies to tcp/udp");
4711			problems++;
4712		}
4713		if (r->rpool.proxy_port[0]) {
4714			yyerror("rpool port only applies to tcp/udp");
4715			problems++;
4716		}
4717	}
4718	if (r->dst.port_op &&
4719	    r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) {
4720		yyerror("invalid port operator for rdr destination port");
4721		problems++;
4722	}
4723	return (-problems);
4724}
4725
4726int
4727process_tabledef(char *name, struct table_opts *opts)
4728{
4729	struct pfr_buffer	 ab;
4730	struct node_tinit	*ti;
4731	unsigned long		 maxcount;
4732	size_t			 s = sizeof(maxcount);
4733
4734	bzero(&ab, sizeof(ab));
4735	ab.pfrb_type = PFRB_ADDRS;
4736	SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
4737		if (ti->file)
4738			if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
4739				if (errno)
4740					yyerror("cannot load \"%s\": %s",
4741					    ti->file, strerror(errno));
4742				else
4743					yyerror("file \"%s\" contains bad data",
4744					    ti->file);
4745				goto _error;
4746			}
4747		if (ti->host)
4748			if (append_addr_host(&ab, ti->host, 0, 0)) {
4749				yyerror("cannot create address buffer: %s",
4750				    strerror(errno));
4751				goto _error;
4752			}
4753	}
4754	if (pf->opts & PF_OPT_VERBOSE)
4755		print_tabledef(name, opts->flags, opts->init_addr,
4756		    &opts->init_nodes);
4757	if (!(pf->opts & PF_OPT_NOACTION) &&
4758	    pfctl_define_table(name, opts->flags, opts->init_addr,
4759	    pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
4760
4761		if (sysctlbyname("net.pf.request_maxcount", &maxcount, &s,
4762		    NULL, 0) == -1)
4763			maxcount = 65535;
4764
4765		if (ab.pfrb_size > maxcount)
4766			yyerror("cannot define table %s: too many elements.\n"
4767			    "Consider increasing net.pf.request_maxcount.",
4768			    name);
4769		else
4770			yyerror("cannot define table %s: %s", name,
4771			    pfr_strerror(errno));
4772
4773		goto _error;
4774	}
4775	pf->tdirty = 1;
4776	pfr_buf_clear(&ab);
4777	return (0);
4778_error:
4779	pfr_buf_clear(&ab);
4780	return (-1);
4781}
4782
4783struct keywords {
4784	const char	*k_name;
4785	int		 k_val;
4786};
4787
4788/* macro gore, but you should've seen the prior indentation nightmare... */
4789
4790#define FREE_LIST(T,r) \
4791	do { \
4792		T *p, *node = r; \
4793		while (node != NULL) { \
4794			p = node; \
4795			node = node->next; \
4796			free(p); \
4797		} \
4798	} while (0)
4799
4800#define LOOP_THROUGH(T,n,r,C) \
4801	do { \
4802		T *n; \
4803		if (r == NULL) { \
4804			r = calloc(1, sizeof(T)); \
4805			if (r == NULL) \
4806				err(1, "LOOP: calloc"); \
4807			r->next = NULL; \
4808		} \
4809		n = r; \
4810		while (n != NULL) { \
4811			do { \
4812				C; \
4813			} while (0); \
4814			n = n->next; \
4815		} \
4816	} while (0)
4817
4818void
4819expand_label_str(char *label, size_t len, const char *srch, const char *repl)
4820{
4821	char *tmp;
4822	char *p, *q;
4823
4824	if ((tmp = calloc(1, len)) == NULL)
4825		err(1, "expand_label_str: calloc");
4826	p = q = label;
4827	while ((q = strstr(p, srch)) != NULL) {
4828		*q = '\0';
4829		if ((strlcat(tmp, p, len) >= len) ||
4830		    (strlcat(tmp, repl, len) >= len))
4831			errx(1, "expand_label: label too long");
4832		q += strlen(srch);
4833		p = q;
4834	}
4835	if (strlcat(tmp, p, len) >= len)
4836		errx(1, "expand_label: label too long");
4837	strlcpy(label, tmp, len);	/* always fits */
4838	free(tmp);
4839}
4840
4841void
4842expand_label_if(const char *name, char *label, size_t len, const char *ifname)
4843{
4844	if (strstr(label, name) != NULL) {
4845		if (!*ifname)
4846			expand_label_str(label, len, name, "any");
4847		else
4848			expand_label_str(label, len, name, ifname);
4849	}
4850}
4851
4852void
4853expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
4854    struct node_host *h)
4855{
4856	char tmp[64], tmp_not[66];
4857
4858	if (strstr(label, name) != NULL) {
4859		switch (h->addr.type) {
4860		case PF_ADDR_DYNIFTL:
4861			snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname);
4862			break;
4863		case PF_ADDR_TABLE:
4864			snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname);
4865			break;
4866		case PF_ADDR_NOROUTE:
4867			snprintf(tmp, sizeof(tmp), "no-route");
4868			break;
4869		case PF_ADDR_URPFFAILED:
4870			snprintf(tmp, sizeof(tmp), "urpf-failed");
4871			break;
4872		case PF_ADDR_ADDRMASK:
4873			if (!af || (PF_AZERO(&h->addr.v.a.addr, af) &&
4874			    PF_AZERO(&h->addr.v.a.mask, af)))
4875				snprintf(tmp, sizeof(tmp), "any");
4876			else {
4877				char	a[48];
4878				int	bits;
4879
4880				if (inet_ntop(af, &h->addr.v.a.addr, a,
4881				    sizeof(a)) == NULL)
4882					snprintf(tmp, sizeof(tmp), "?");
4883				else {
4884					bits = unmask(&h->addr.v.a.mask, af);
4885					if ((af == AF_INET && bits < 32) ||
4886					    (af == AF_INET6 && bits < 128))
4887						snprintf(tmp, sizeof(tmp),
4888						    "%s/%d", a, bits);
4889					else
4890						snprintf(tmp, sizeof(tmp),
4891						    "%s", a);
4892				}
4893			}
4894			break;
4895		default:
4896			snprintf(tmp, sizeof(tmp), "?");
4897			break;
4898		}
4899
4900		if (h->not) {
4901			snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
4902			expand_label_str(label, len, name, tmp_not);
4903		} else
4904			expand_label_str(label, len, name, tmp);
4905	}
4906}
4907
4908void
4909expand_label_port(const char *name, char *label, size_t len,
4910    struct node_port *port)
4911{
4912	char	 a1[6], a2[6], op[13] = "";
4913
4914	if (strstr(label, name) != NULL) {
4915		snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0]));
4916		snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1]));
4917		if (!port->op)
4918			;
4919		else if (port->op == PF_OP_IRG)
4920			snprintf(op, sizeof(op), "%s><%s", a1, a2);
4921		else if (port->op == PF_OP_XRG)
4922			snprintf(op, sizeof(op), "%s<>%s", a1, a2);
4923		else if (port->op == PF_OP_EQ)
4924			snprintf(op, sizeof(op), "%s", a1);
4925		else if (port->op == PF_OP_NE)
4926			snprintf(op, sizeof(op), "!=%s", a1);
4927		else if (port->op == PF_OP_LT)
4928			snprintf(op, sizeof(op), "<%s", a1);
4929		else if (port->op == PF_OP_LE)
4930			snprintf(op, sizeof(op), "<=%s", a1);
4931		else if (port->op == PF_OP_GT)
4932			snprintf(op, sizeof(op), ">%s", a1);
4933		else if (port->op == PF_OP_GE)
4934			snprintf(op, sizeof(op), ">=%s", a1);
4935		expand_label_str(label, len, name, op);
4936	}
4937}
4938
4939void
4940expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
4941{
4942	struct protoent *pe;
4943	char n[4];
4944
4945	if (strstr(label, name) != NULL) {
4946		pe = getprotobynumber(proto);
4947		if (pe != NULL)
4948			expand_label_str(label, len, name, pe->p_name);
4949		else {
4950			snprintf(n, sizeof(n), "%u", proto);
4951			expand_label_str(label, len, name, n);
4952		}
4953	}
4954}
4955
4956void
4957expand_label_nr(const char *name, char *label, size_t len)
4958{
4959	char n[11];
4960
4961	if (strstr(label, name) != NULL) {
4962		snprintf(n, sizeof(n), "%u", pf->anchor->match);
4963		expand_label_str(label, len, name, n);
4964	}
4965}
4966
4967void
4968expand_label(char *label, size_t len, const char *ifname, sa_family_t af,
4969    struct node_host *src_host, struct node_port *src_port,
4970    struct node_host *dst_host, struct node_port *dst_port,
4971    u_int8_t proto)
4972{
4973	expand_label_if("$if", label, len, ifname);
4974	expand_label_addr("$srcaddr", label, len, af, src_host);
4975	expand_label_addr("$dstaddr", label, len, af, dst_host);
4976	expand_label_port("$srcport", label, len, src_port);
4977	expand_label_port("$dstport", label, len, dst_port);
4978	expand_label_proto("$proto", label, len, proto);
4979	expand_label_nr("$nr", label, len);
4980}
4981
4982int
4983expand_altq(struct pf_altq *a, struct node_if *interfaces,
4984    struct node_queue *nqueues, struct node_queue_bw bwspec,
4985    struct node_queue_opt *opts)
4986{
4987	struct pf_altq		 pa, pb;
4988	char			 qname[PF_QNAME_SIZE];
4989	struct node_queue	*n;
4990	struct node_queue_bw	 bw;
4991	int			 errs = 0;
4992
4993	if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4994		FREE_LIST(struct node_if, interfaces);
4995		if (nqueues)
4996			FREE_LIST(struct node_queue, nqueues);
4997		return (0);
4998	}
4999
5000	LOOP_THROUGH(struct node_if, interface, interfaces,
5001		memcpy(&pa, a, sizeof(struct pf_altq));
5002		if (strlcpy(pa.ifname, interface->ifname,
5003		    sizeof(pa.ifname)) >= sizeof(pa.ifname))
5004			errx(1, "expand_altq: strlcpy");
5005
5006		if (interface->not) {
5007			yyerror("altq on ! <interface> is not supported");
5008			errs++;
5009		} else {
5010			if (eval_pfaltq(pf, &pa, &bwspec, opts))
5011				errs++;
5012			else
5013				if (pfctl_add_altq(pf, &pa))
5014					errs++;
5015
5016			if (pf->opts & PF_OPT_VERBOSE) {
5017				print_altq(&pf->paltq->altq, 0,
5018				    &bwspec, opts);
5019				if (nqueues && nqueues->tail) {
5020					printf("queue { ");
5021					LOOP_THROUGH(struct node_queue, queue,
5022					    nqueues,
5023						printf("%s ",
5024						    queue->queue);
5025					);
5026					printf("}");
5027				}
5028				printf("\n");
5029			}
5030
5031			if (pa.scheduler == ALTQT_CBQ ||
5032			    pa.scheduler == ALTQT_HFSC) {
5033				/* now create a root queue */
5034				memset(&pb, 0, sizeof(struct pf_altq));
5035				if (strlcpy(qname, "root_", sizeof(qname)) >=
5036				    sizeof(qname))
5037					errx(1, "expand_altq: strlcpy");
5038				if (strlcat(qname, interface->ifname,
5039				    sizeof(qname)) >= sizeof(qname))
5040					errx(1, "expand_altq: strlcat");
5041				if (strlcpy(pb.qname, qname,
5042				    sizeof(pb.qname)) >= sizeof(pb.qname))
5043					errx(1, "expand_altq: strlcpy");
5044				if (strlcpy(pb.ifname, interface->ifname,
5045				    sizeof(pb.ifname)) >= sizeof(pb.ifname))
5046					errx(1, "expand_altq: strlcpy");
5047				pb.qlimit = pa.qlimit;
5048				pb.scheduler = pa.scheduler;
5049				bw.bw_absolute = pa.ifbandwidth;
5050				bw.bw_percent = 0;
5051				if (eval_pfqueue(pf, &pb, &bw, opts))
5052					errs++;
5053				else
5054					if (pfctl_add_altq(pf, &pb))
5055						errs++;
5056			}
5057
5058			LOOP_THROUGH(struct node_queue, queue, nqueues,
5059				n = calloc(1, sizeof(struct node_queue));
5060				if (n == NULL)
5061					err(1, "expand_altq: calloc");
5062				if (pa.scheduler == ALTQT_CBQ ||
5063				    pa.scheduler == ALTQT_HFSC)
5064					if (strlcpy(n->parent, qname,
5065					    sizeof(n->parent)) >=
5066					    sizeof(n->parent))
5067						errx(1, "expand_altq: strlcpy");
5068				if (strlcpy(n->queue, queue->queue,
5069				    sizeof(n->queue)) >= sizeof(n->queue))
5070					errx(1, "expand_altq: strlcpy");
5071				if (strlcpy(n->ifname, interface->ifname,
5072				    sizeof(n->ifname)) >= sizeof(n->ifname))
5073					errx(1, "expand_altq: strlcpy");
5074				n->scheduler = pa.scheduler;
5075				n->next = NULL;
5076				n->tail = n;
5077				if (queues == NULL)
5078					queues = n;
5079				else {
5080					queues->tail->next = n;
5081					queues->tail = n;
5082				}
5083			);
5084		}
5085	);
5086	FREE_LIST(struct node_if, interfaces);
5087	if (nqueues)
5088		FREE_LIST(struct node_queue, nqueues);
5089
5090	return (errs);
5091}
5092
5093int
5094expand_queue(struct pf_altq *a, struct node_if *interfaces,
5095    struct node_queue *nqueues, struct node_queue_bw bwspec,
5096    struct node_queue_opt *opts)
5097{
5098	struct node_queue	*n, *nq;
5099	struct pf_altq		 pa;
5100	u_int8_t		 found = 0;
5101	u_int8_t		 errs = 0;
5102
5103	if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
5104		FREE_LIST(struct node_queue, nqueues);
5105		return (0);
5106	}
5107
5108	if (queues == NULL) {
5109		yyerror("queue %s has no parent", a->qname);
5110		FREE_LIST(struct node_queue, nqueues);
5111		return (1);
5112	}
5113
5114	LOOP_THROUGH(struct node_if, interface, interfaces,
5115		LOOP_THROUGH(struct node_queue, tqueue, queues,
5116			if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
5117			    (interface->ifname[0] == 0 ||
5118			    (!interface->not && !strncmp(interface->ifname,
5119			    tqueue->ifname, IFNAMSIZ)) ||
5120			    (interface->not && strncmp(interface->ifname,
5121			    tqueue->ifname, IFNAMSIZ)))) {
5122				/* found ourself in queues */
5123				found++;
5124
5125				memcpy(&pa, a, sizeof(struct pf_altq));
5126
5127				if (pa.scheduler != ALTQT_NONE &&
5128				    pa.scheduler != tqueue->scheduler) {
5129					yyerror("exactly one scheduler type "
5130					    "per interface allowed");
5131					return (1);
5132				}
5133				pa.scheduler = tqueue->scheduler;
5134
5135				/* scheduler dependent error checking */
5136				switch (pa.scheduler) {
5137				case ALTQT_PRIQ:
5138					if (nqueues != NULL) {
5139						yyerror("priq queues cannot "
5140						    "have child queues");
5141						return (1);
5142					}
5143					if (bwspec.bw_absolute > 0 ||
5144					    bwspec.bw_percent < 100) {
5145						yyerror("priq doesn't take "
5146						    "bandwidth");
5147						return (1);
5148					}
5149					break;
5150				default:
5151					break;
5152				}
5153
5154				if (strlcpy(pa.ifname, tqueue->ifname,
5155				    sizeof(pa.ifname)) >= sizeof(pa.ifname))
5156					errx(1, "expand_queue: strlcpy");
5157				if (strlcpy(pa.parent, tqueue->parent,
5158				    sizeof(pa.parent)) >= sizeof(pa.parent))
5159					errx(1, "expand_queue: strlcpy");
5160
5161				if (eval_pfqueue(pf, &pa, &bwspec, opts))
5162					errs++;
5163				else
5164					if (pfctl_add_altq(pf, &pa))
5165						errs++;
5166
5167				for (nq = nqueues; nq != NULL; nq = nq->next) {
5168					if (!strcmp(a->qname, nq->queue)) {
5169						yyerror("queue cannot have "
5170						    "itself as child");
5171						errs++;
5172						continue;
5173					}
5174					n = calloc(1,
5175					    sizeof(struct node_queue));
5176					if (n == NULL)
5177						err(1, "expand_queue: calloc");
5178					if (strlcpy(n->parent, a->qname,
5179					    sizeof(n->parent)) >=
5180					    sizeof(n->parent))
5181						errx(1, "expand_queue strlcpy");
5182					if (strlcpy(n->queue, nq->queue,
5183					    sizeof(n->queue)) >=
5184					    sizeof(n->queue))
5185						errx(1, "expand_queue strlcpy");
5186					if (strlcpy(n->ifname, tqueue->ifname,
5187					    sizeof(n->ifname)) >=
5188					    sizeof(n->ifname))
5189						errx(1, "expand_queue strlcpy");
5190					n->scheduler = tqueue->scheduler;
5191					n->next = NULL;
5192					n->tail = n;
5193					if (queues == NULL)
5194						queues = n;
5195					else {
5196						queues->tail->next = n;
5197						queues->tail = n;
5198					}
5199				}
5200				if ((pf->opts & PF_OPT_VERBOSE) && (
5201				    (found == 1 && interface->ifname[0] == 0) ||
5202				    (found > 0 && interface->ifname[0] != 0))) {
5203					print_queue(&pf->paltq->altq, 0,
5204					    &bwspec, interface->ifname[0] != 0,
5205					    opts);
5206					if (nqueues && nqueues->tail) {
5207						printf("{ ");
5208						LOOP_THROUGH(struct node_queue,
5209						    queue, nqueues,
5210							printf("%s ",
5211							    queue->queue);
5212						);
5213						printf("}");
5214					}
5215					printf("\n");
5216				}
5217			}
5218		);
5219	);
5220
5221	FREE_LIST(struct node_queue, nqueues);
5222	FREE_LIST(struct node_if, interfaces);
5223
5224	if (!found) {
5225		yyerror("queue %s has no parent", a->qname);
5226		errs++;
5227	}
5228
5229	if (errs)
5230		return (1);
5231	else
5232		return (0);
5233}
5234
5235void
5236expand_rule(struct pf_rule *r,
5237    struct node_if *interfaces, struct node_host *rpool_hosts,
5238    struct node_proto *protos, struct node_os *src_oses,
5239    struct node_host *src_hosts, struct node_port *src_ports,
5240    struct node_host *dst_hosts, struct node_port *dst_ports,
5241    struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
5242    const char *anchor_call)
5243{
5244	sa_family_t		 af = r->af;
5245	int			 added = 0, error = 0;
5246	char			 ifname[IF_NAMESIZE];
5247	char			 label[PF_RULE_LABEL_SIZE];
5248	char			 tagname[PF_TAG_NAME_SIZE];
5249	char			 match_tagname[PF_TAG_NAME_SIZE];
5250	struct pf_pooladdr	*pa;
5251	struct node_host	*h;
5252	u_int8_t		 flags, flagset, keep_state;
5253
5254	if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label))
5255		errx(1, "expand_rule: strlcpy");
5256	if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
5257		errx(1, "expand_rule: strlcpy");
5258	if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
5259	    sizeof(match_tagname))
5260		errx(1, "expand_rule: strlcpy");
5261	flags = r->flags;
5262	flagset = r->flagset;
5263	keep_state = r->keep_state;
5264
5265	LOOP_THROUGH(struct node_if, interface, interfaces,
5266	LOOP_THROUGH(struct node_proto, proto, protos,
5267	LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
5268	LOOP_THROUGH(struct node_host, src_host, src_hosts,
5269	LOOP_THROUGH(struct node_port, src_port, src_ports,
5270	LOOP_THROUGH(struct node_os, src_os, src_oses,
5271	LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
5272	LOOP_THROUGH(struct node_port, dst_port, dst_ports,
5273	LOOP_THROUGH(struct node_uid, uid, uids,
5274	LOOP_THROUGH(struct node_gid, gid, gids,
5275
5276		r->af = af;
5277		/* for link-local IPv6 address, interface must match up */
5278		if ((r->af && src_host->af && r->af != src_host->af) ||
5279		    (r->af && dst_host->af && r->af != dst_host->af) ||
5280		    (src_host->af && dst_host->af &&
5281		    src_host->af != dst_host->af) ||
5282		    (src_host->ifindex && dst_host->ifindex &&
5283		    src_host->ifindex != dst_host->ifindex) ||
5284		    (src_host->ifindex && *interface->ifname &&
5285		    src_host->ifindex != if_nametoindex(interface->ifname)) ||
5286		    (dst_host->ifindex && *interface->ifname &&
5287		    dst_host->ifindex != if_nametoindex(interface->ifname)))
5288			continue;
5289		if (!r->af && src_host->af)
5290			r->af = src_host->af;
5291		else if (!r->af && dst_host->af)
5292			r->af = dst_host->af;
5293
5294		if (*interface->ifname)
5295			strlcpy(r->ifname, interface->ifname,
5296			    sizeof(r->ifname));
5297		else if (if_indextoname(src_host->ifindex, ifname))
5298			strlcpy(r->ifname, ifname, sizeof(r->ifname));
5299		else if (if_indextoname(dst_host->ifindex, ifname))
5300			strlcpy(r->ifname, ifname, sizeof(r->ifname));
5301		else
5302			memset(r->ifname, '\0', sizeof(r->ifname));
5303
5304		if (strlcpy(r->label, label, sizeof(r->label)) >=
5305		    sizeof(r->label))
5306			errx(1, "expand_rule: strlcpy");
5307		if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
5308		    sizeof(r->tagname))
5309			errx(1, "expand_rule: strlcpy");
5310		if (strlcpy(r->match_tagname, match_tagname,
5311		    sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
5312			errx(1, "expand_rule: strlcpy");
5313		expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af,
5314		    src_host, src_port, dst_host, dst_port, proto->proto);
5315		expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af,
5316		    src_host, src_port, dst_host, dst_port, proto->proto);
5317		expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname,
5318		    r->af, src_host, src_port, dst_host, dst_port,
5319		    proto->proto);
5320
5321		error += check_netmask(src_host, r->af);
5322		error += check_netmask(dst_host, r->af);
5323
5324		r->ifnot = interface->not;
5325		r->proto = proto->proto;
5326		r->src.addr = src_host->addr;
5327		r->src.neg = src_host->not;
5328		r->src.port[0] = src_port->port[0];
5329		r->src.port[1] = src_port->port[1];
5330		r->src.port_op = src_port->op;
5331		r->dst.addr = dst_host->addr;
5332		r->dst.neg = dst_host->not;
5333		r->dst.port[0] = dst_port->port[0];
5334		r->dst.port[1] = dst_port->port[1];
5335		r->dst.port_op = dst_port->op;
5336		r->uid.op = uid->op;
5337		r->uid.uid[0] = uid->uid[0];
5338		r->uid.uid[1] = uid->uid[1];
5339		r->gid.op = gid->op;
5340		r->gid.gid[0] = gid->gid[0];
5341		r->gid.gid[1] = gid->gid[1];
5342		r->type = icmp_type->type;
5343		r->code = icmp_type->code;
5344
5345		if ((keep_state == PF_STATE_MODULATE ||
5346		    keep_state == PF_STATE_SYNPROXY) &&
5347		    r->proto && r->proto != IPPROTO_TCP)
5348			r->keep_state = PF_STATE_NORMAL;
5349		else
5350			r->keep_state = keep_state;
5351
5352		if (r->proto && r->proto != IPPROTO_TCP) {
5353			r->flags = 0;
5354			r->flagset = 0;
5355		} else {
5356			r->flags = flags;
5357			r->flagset = flagset;
5358		}
5359		if (icmp_type->proto && r->proto != icmp_type->proto) {
5360			yyerror("icmp-type mismatch");
5361			error++;
5362		}
5363
5364		if (src_os && src_os->os) {
5365			r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
5366			if ((pf->opts & PF_OPT_VERBOSE2) &&
5367			    r->os_fingerprint == PF_OSFP_NOMATCH)
5368				fprintf(stderr,
5369				    "warning: unknown '%s' OS fingerprint\n",
5370				    src_os->os);
5371		} else {
5372			r->os_fingerprint = PF_OSFP_ANY;
5373		}
5374
5375		TAILQ_INIT(&r->rpool.list);
5376		for (h = rpool_hosts; h != NULL; h = h->next) {
5377			pa = calloc(1, sizeof(struct pf_pooladdr));
5378			if (pa == NULL)
5379				err(1, "expand_rule: calloc");
5380			pa->addr = h->addr;
5381			if (h->ifname != NULL) {
5382				if (strlcpy(pa->ifname, h->ifname,
5383				    sizeof(pa->ifname)) >=
5384				    sizeof(pa->ifname))
5385					errx(1, "expand_rule: strlcpy");
5386			} else
5387				pa->ifname[0] = 0;
5388			TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries);
5389		}
5390
5391		if (rule_consistent(r, anchor_call[0]) < 0 || error)
5392			yyerror("skipping rule due to errors");
5393		else {
5394			r->nr = pf->astack[pf->asd]->match++;
5395			pfctl_add_rule(pf, r, anchor_call);
5396			added++;
5397		}
5398
5399	))))))))));
5400
5401	FREE_LIST(struct node_if, interfaces);
5402	FREE_LIST(struct node_proto, protos);
5403	FREE_LIST(struct node_host, src_hosts);
5404	FREE_LIST(struct node_port, src_ports);
5405	FREE_LIST(struct node_os, src_oses);
5406	FREE_LIST(struct node_host, dst_hosts);
5407	FREE_LIST(struct node_port, dst_ports);
5408	FREE_LIST(struct node_uid, uids);
5409	FREE_LIST(struct node_gid, gids);
5410	FREE_LIST(struct node_icmp, icmp_types);
5411	FREE_LIST(struct node_host, rpool_hosts);
5412
5413	if (!added)
5414		yyerror("rule expands to no valid combination");
5415}
5416
5417int
5418expand_skip_interface(struct node_if *interfaces)
5419{
5420	int	errs = 0;
5421
5422	if (!interfaces || (!interfaces->next && !interfaces->not &&
5423	    !strcmp(interfaces->ifname, "none"))) {
5424		if (pf->opts & PF_OPT_VERBOSE)
5425			printf("set skip on none\n");
5426		errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
5427		return (errs);
5428	}
5429
5430	if (pf->opts & PF_OPT_VERBOSE)
5431		printf("set skip on {");
5432	LOOP_THROUGH(struct node_if, interface, interfaces,
5433		if (pf->opts & PF_OPT_VERBOSE)
5434			printf(" %s", interface->ifname);
5435		if (interface->not) {
5436			yyerror("skip on ! <interface> is not supported");
5437			errs++;
5438		} else
5439			errs += pfctl_set_interface_flags(pf,
5440			    interface->ifname, PFI_IFLAG_SKIP, 1);
5441	);
5442	if (pf->opts & PF_OPT_VERBOSE)
5443		printf(" }\n");
5444
5445	FREE_LIST(struct node_if, interfaces);
5446
5447	if (errs)
5448		return (1);
5449	else
5450		return (0);
5451}
5452
5453#undef FREE_LIST
5454#undef LOOP_THROUGH
5455
5456int
5457check_rulestate(int desired_state)
5458{
5459	if (require_order && (rulestate > desired_state)) {
5460		yyerror("Rules must be in order: options, normalization, "
5461		    "queueing, translation, filtering");
5462		return (1);
5463	}
5464	rulestate = desired_state;
5465	return (0);
5466}
5467
5468int
5469kw_cmp(const void *k, const void *e)
5470{
5471	return (strcmp(k, ((const struct keywords *)e)->k_name));
5472}
5473
5474int
5475lookup(char *s)
5476{
5477	/* this has to be sorted always */
5478	static const struct keywords keywords[] = {
5479		{ "all",		ALL},
5480		{ "allow-opts",		ALLOWOPTS},
5481		{ "altq",		ALTQ},
5482		{ "anchor",		ANCHOR},
5483		{ "antispoof",		ANTISPOOF},
5484		{ "any",		ANY},
5485		{ "bandwidth",		BANDWIDTH},
5486		{ "binat",		BINAT},
5487		{ "binat-anchor",	BINATANCHOR},
5488		{ "bitmask",		BITMASK},
5489		{ "block",		BLOCK},
5490		{ "block-policy",	BLOCKPOLICY},
5491		{ "buckets",		BUCKETS},
5492		{ "cbq",		CBQ},
5493		{ "code",		CODE},
5494		{ "codelq",		CODEL},
5495		{ "crop",		FRAGCROP},
5496		{ "debug",		DEBUG},
5497		{ "divert-reply",	DIVERTREPLY},
5498		{ "divert-to",		DIVERTTO},
5499		{ "drop",		DROP},
5500		{ "drop-ovl",		FRAGDROP},
5501		{ "dup-to",		DUPTO},
5502		{ "fail-policy",	FAILPOLICY},
5503		{ "fairq",		FAIRQ},
5504		{ "fastroute",		FASTROUTE},
5505		{ "file",		FILENAME},
5506		{ "fingerprints",	FINGERPRINTS},
5507		{ "flags",		FLAGS},
5508		{ "floating",		FLOATING},
5509		{ "flush",		FLUSH},
5510		{ "for",		FOR},
5511		{ "fragment",		FRAGMENT},
5512		{ "from",		FROM},
5513		{ "global",		GLOBAL},
5514		{ "group",		GROUP},
5515		{ "hfsc",		HFSC},
5516		{ "hogs",		HOGS},
5517		{ "hostid",		HOSTID},
5518		{ "icmp-type",		ICMPTYPE},
5519		{ "icmp6-type",		ICMP6TYPE},
5520		{ "if-bound",		IFBOUND},
5521		{ "in",			IN},
5522		{ "include",		INCLUDE},
5523		{ "inet",		INET},
5524		{ "inet6",		INET6},
5525		{ "interval",		INTERVAL},
5526		{ "keep",		KEEP},
5527		{ "label",		LABEL},
5528		{ "limit",		LIMIT},
5529		{ "linkshare",		LINKSHARE},
5530		{ "load",		LOAD},
5531		{ "log",		LOG},
5532		{ "loginterface",	LOGINTERFACE},
5533		{ "max",		MAXIMUM},
5534		{ "max-mss",		MAXMSS},
5535		{ "max-src-conn",	MAXSRCCONN},
5536		{ "max-src-conn-rate",	MAXSRCCONNRATE},
5537		{ "max-src-nodes",	MAXSRCNODES},
5538		{ "max-src-states",	MAXSRCSTATES},
5539		{ "min-ttl",		MINTTL},
5540		{ "modulate",		MODULATE},
5541		{ "nat",		NAT},
5542		{ "nat-anchor",		NATANCHOR},
5543		{ "no",			NO},
5544		{ "no-df",		NODF},
5545		{ "no-route",		NOROUTE},
5546		{ "no-sync",		NOSYNC},
5547		{ "on",			ON},
5548		{ "optimization",	OPTIMIZATION},
5549		{ "os",			OS},
5550		{ "out",		OUT},
5551		{ "overload",		OVERLOAD},
5552		{ "pass",		PASS},
5553		{ "port",		PORT},
5554		{ "prio",		PRIO},
5555		{ "priority",		PRIORITY},
5556		{ "priq",		PRIQ},
5557		{ "probability",	PROBABILITY},
5558		{ "proto",		PROTO},
5559		{ "qlimit",		QLIMIT},
5560		{ "queue",		QUEUE},
5561		{ "quick",		QUICK},
5562		{ "random",		RANDOM},
5563		{ "random-id",		RANDOMID},
5564		{ "rdr",		RDR},
5565		{ "rdr-anchor",		RDRANCHOR},
5566		{ "realtime",		REALTIME},
5567		{ "reassemble",		REASSEMBLE},
5568		{ "reply-to",		REPLYTO},
5569		{ "require-order",	REQUIREORDER},
5570		{ "return",		RETURN},
5571		{ "return-icmp",	RETURNICMP},
5572		{ "return-icmp6",	RETURNICMP6},
5573		{ "return-rst",		RETURNRST},
5574		{ "round-robin",	ROUNDROBIN},
5575		{ "route",		ROUTE},
5576		{ "route-to",		ROUTETO},
5577		{ "rtable",		RTABLE},
5578		{ "rule",		RULE},
5579		{ "ruleset-optimization",	RULESET_OPTIMIZATION},
5580		{ "scrub",		SCRUB},
5581		{ "set",		SET},
5582		{ "set-tos",		SETTOS},
5583		{ "skip",		SKIP},
5584		{ "sloppy",		SLOPPY},
5585		{ "source-hash",	SOURCEHASH},
5586		{ "source-track",	SOURCETRACK},
5587		{ "state",		STATE},
5588		{ "state-defaults",	STATEDEFAULTS},
5589		{ "state-policy",	STATEPOLICY},
5590		{ "static-port",	STATICPORT},
5591		{ "sticky-address",	STICKYADDRESS},
5592		{ "synproxy",		SYNPROXY},
5593		{ "table",		TABLE},
5594		{ "tag",		TAG},
5595		{ "tagged",		TAGGED},
5596		{ "target",		TARGET},
5597		{ "tbrsize",		TBRSIZE},
5598		{ "timeout",		TIMEOUT},
5599		{ "to",			TO},
5600		{ "tos",		TOS},
5601		{ "ttl",		TTL},
5602		{ "upperlimit",		UPPERLIMIT},
5603		{ "urpf-failed",	URPFFAILED},
5604		{ "user",		USER},
5605	};
5606	const struct keywords	*p;
5607
5608	p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
5609	    sizeof(keywords[0]), kw_cmp);
5610
5611	if (p) {
5612		if (debug > 1)
5613			fprintf(stderr, "%s: %d\n", s, p->k_val);
5614		return (p->k_val);
5615	} else {
5616		if (debug > 1)
5617			fprintf(stderr, "string: %s\n", s);
5618		return (STRING);
5619	}
5620}
5621
5622#define MAXPUSHBACK	128
5623
5624char	*parsebuf;
5625int	 parseindex;
5626char	 pushback_buffer[MAXPUSHBACK];
5627int	 pushback_index = 0;
5628
5629int
5630lgetc(int quotec)
5631{
5632	int		c, next;
5633
5634	if (parsebuf) {
5635		/* Read character from the parsebuffer instead of input. */
5636		if (parseindex >= 0) {
5637			c = parsebuf[parseindex++];
5638			if (c != '\0')
5639				return (c);
5640			parsebuf = NULL;
5641		} else
5642			parseindex++;
5643	}
5644
5645	if (pushback_index)
5646		return (pushback_buffer[--pushback_index]);
5647
5648	if (quotec) {
5649		if ((c = getc(file->stream)) == EOF) {
5650			yyerror("reached end of file while parsing quoted string");
5651			if (popfile() == EOF)
5652				return (EOF);
5653			return (quotec);
5654		}
5655		return (c);
5656	}
5657
5658	while ((c = getc(file->stream)) == '\\') {
5659		next = getc(file->stream);
5660		if (next != '\n') {
5661			c = next;
5662			break;
5663		}
5664		yylval.lineno = file->lineno;
5665		file->lineno++;
5666	}
5667
5668	while (c == EOF) {
5669		if (popfile() == EOF)
5670			return (EOF);
5671		c = getc(file->stream);
5672	}
5673	return (c);
5674}
5675
5676int
5677lungetc(int c)
5678{
5679	if (c == EOF)
5680		return (EOF);
5681	if (parsebuf) {
5682		parseindex--;
5683		if (parseindex >= 0)
5684			return (c);
5685	}
5686	if (pushback_index < MAXPUSHBACK-1)
5687		return (pushback_buffer[pushback_index++] = c);
5688	else
5689		return (EOF);
5690}
5691
5692int
5693findeol(void)
5694{
5695	int	c;
5696
5697	parsebuf = NULL;
5698
5699	/* skip to either EOF or the first real EOL */
5700	while (1) {
5701		if (pushback_index)
5702			c = pushback_buffer[--pushback_index];
5703		else
5704			c = lgetc(0);
5705		if (c == '\n') {
5706			file->lineno++;
5707			break;
5708		}
5709		if (c == EOF)
5710			break;
5711	}
5712	return (ERROR);
5713}
5714
5715int
5716yylex(void)
5717{
5718	char	 buf[8096];
5719	char	*p, *val;
5720	int	 quotec, next, c;
5721	int	 token;
5722
5723top:
5724	p = buf;
5725	while ((c = lgetc(0)) == ' ' || c == '\t')
5726		; /* nothing */
5727
5728	yylval.lineno = file->lineno;
5729	if (c == '#')
5730		while ((c = lgetc(0)) != '\n' && c != EOF)
5731			; /* nothing */
5732	if (c == '$' && parsebuf == NULL) {
5733		while (1) {
5734			if ((c = lgetc(0)) == EOF)
5735				return (0);
5736
5737			if (p + 1 >= buf + sizeof(buf) - 1) {
5738				yyerror("string too long");
5739				return (findeol());
5740			}
5741			if (isalnum(c) || c == '_') {
5742				*p++ = (char)c;
5743				continue;
5744			}
5745			*p = '\0';
5746			lungetc(c);
5747			break;
5748		}
5749		val = symget(buf);
5750		if (val == NULL) {
5751			yyerror("macro '%s' not defined", buf);
5752			return (findeol());
5753		}
5754		parsebuf = val;
5755		parseindex = 0;
5756		goto top;
5757	}
5758
5759	switch (c) {
5760	case '\'':
5761	case '"':
5762		quotec = c;
5763		while (1) {
5764			if ((c = lgetc(quotec)) == EOF)
5765				return (0);
5766			if (c == '\n') {
5767				file->lineno++;
5768				continue;
5769			} else if (c == '\\') {
5770				if ((next = lgetc(quotec)) == EOF)
5771					return (0);
5772				if (next == quotec || c == ' ' || c == '\t')
5773					c = next;
5774				else if (next == '\n') {
5775					file->lineno++;
5776					continue;
5777				}
5778				else
5779					lungetc(next);
5780			} else if (c == quotec) {
5781				*p = '\0';
5782				break;
5783			}
5784			if (p + 1 >= buf + sizeof(buf) - 1) {
5785				yyerror("string too long");
5786				return (findeol());
5787			}
5788			*p++ = (char)c;
5789		}
5790		yylval.v.string = strdup(buf);
5791		if (yylval.v.string == NULL)
5792			err(1, "yylex: strdup");
5793		return (STRING);
5794	case '<':
5795		next = lgetc(0);
5796		if (next == '>') {
5797			yylval.v.i = PF_OP_XRG;
5798			return (PORTBINARY);
5799		}
5800		lungetc(next);
5801		break;
5802	case '>':
5803		next = lgetc(0);
5804		if (next == '<') {
5805			yylval.v.i = PF_OP_IRG;
5806			return (PORTBINARY);
5807		}
5808		lungetc(next);
5809		break;
5810	case '-':
5811		next = lgetc(0);
5812		if (next == '>')
5813			return (ARROW);
5814		lungetc(next);
5815		break;
5816	}
5817
5818#define allowed_to_end_number(x) \
5819	(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
5820
5821	if (c == '-' || isdigit(c)) {
5822		do {
5823			*p++ = c;
5824			if ((unsigned)(p-buf) >= sizeof(buf)) {
5825				yyerror("string too long");
5826				return (findeol());
5827			}
5828		} while ((c = lgetc(0)) != EOF && isdigit(c));
5829		lungetc(c);
5830		if (p == buf + 1 && buf[0] == '-')
5831			goto nodigits;
5832		if (c == EOF || allowed_to_end_number(c)) {
5833			const char *errstr = NULL;
5834
5835			*p = '\0';
5836			yylval.v.number = strtonum(buf, LLONG_MIN,
5837			    LLONG_MAX, &errstr);
5838			if (errstr) {
5839				yyerror("\"%s\" invalid number: %s",
5840				    buf, errstr);
5841				return (findeol());
5842			}
5843			return (NUMBER);
5844		} else {
5845nodigits:
5846			while (p > buf + 1)
5847				lungetc(*--p);
5848			c = *--p;
5849			if (c == '-')
5850				return (c);
5851		}
5852	}
5853
5854#define allowed_in_string(x) \
5855	(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
5856	x != '{' && x != '}' && x != '<' && x != '>' && \
5857	x != '!' && x != '=' && x != '/' && x != '#' && \
5858	x != ','))
5859
5860	if (isalnum(c) || c == ':' || c == '_') {
5861		do {
5862			*p++ = c;
5863			if ((unsigned)(p-buf) >= sizeof(buf)) {
5864				yyerror("string too long");
5865				return (findeol());
5866			}
5867		} while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
5868		lungetc(c);
5869		*p = '\0';
5870		if ((token = lookup(buf)) == STRING)
5871			if ((yylval.v.string = strdup(buf)) == NULL)
5872				err(1, "yylex: strdup");
5873		return (token);
5874	}
5875	if (c == '\n') {
5876		yylval.lineno = file->lineno;
5877		file->lineno++;
5878	}
5879	if (c == EOF)
5880		return (0);
5881	return (c);
5882}
5883
5884int
5885check_file_secrecy(int fd, const char *fname)
5886{
5887	struct stat	st;
5888
5889	if (fstat(fd, &st)) {
5890		warn("cannot stat %s", fname);
5891		return (-1);
5892	}
5893	if (st.st_uid != 0 && st.st_uid != getuid()) {
5894		warnx("%s: owner not root or current user", fname);
5895		return (-1);
5896	}
5897	if (st.st_mode & (S_IRWXG | S_IRWXO)) {
5898		warnx("%s: group/world readable/writeable", fname);
5899		return (-1);
5900	}
5901	return (0);
5902}
5903
5904struct file *
5905pushfile(const char *name, int secret)
5906{
5907	struct file	*nfile;
5908
5909	if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
5910	    (nfile->name = strdup(name)) == NULL) {
5911		warn("malloc");
5912		return (NULL);
5913	}
5914	if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
5915		nfile->stream = stdin;
5916		free(nfile->name);
5917		if ((nfile->name = strdup("stdin")) == NULL) {
5918			warn("strdup");
5919			free(nfile);
5920			return (NULL);
5921		}
5922	} else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
5923		warn("%s", nfile->name);
5924		free(nfile->name);
5925		free(nfile);
5926		return (NULL);
5927	} else if (secret &&
5928	    check_file_secrecy(fileno(nfile->stream), nfile->name)) {
5929		fclose(nfile->stream);
5930		free(nfile->name);
5931		free(nfile);
5932		return (NULL);
5933	}
5934	nfile->lineno = 1;
5935	TAILQ_INSERT_TAIL(&files, nfile, entry);
5936	return (nfile);
5937}
5938
5939int
5940popfile(void)
5941{
5942	struct file	*prev;
5943
5944	if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
5945		prev->errors += file->errors;
5946		TAILQ_REMOVE(&files, file, entry);
5947		fclose(file->stream);
5948		free(file->name);
5949		free(file);
5950		file = prev;
5951		return (0);
5952	}
5953	return (EOF);
5954}
5955
5956int
5957parse_config(char *filename, struct pfctl *xpf)
5958{
5959	int		 errors = 0;
5960	struct sym	*sym;
5961
5962	pf = xpf;
5963	errors = 0;
5964	rulestate = PFCTL_STATE_NONE;
5965	returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
5966	returnicmp6default =
5967	    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
5968	blockpolicy = PFRULE_DROP;
5969	failpolicy = PFRULE_DROP;
5970	require_order = 1;
5971
5972	if ((file = pushfile(filename, 0)) == NULL) {
5973		warn("cannot open the main config file!");
5974		return (-1);
5975	}
5976
5977	yyparse();
5978	errors = file->errors;
5979	popfile();
5980
5981	/* Free macros and check which have not been used. */
5982	while ((sym = TAILQ_FIRST(&symhead))) {
5983		if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
5984			fprintf(stderr, "warning: macro '%s' not "
5985			    "used\n", sym->nam);
5986		free(sym->nam);
5987		free(sym->val);
5988		TAILQ_REMOVE(&symhead, sym, entry);
5989		free(sym);
5990	}
5991
5992	return (errors ? -1 : 0);
5993}
5994
5995int
5996symset(const char *nam, const char *val, int persist)
5997{
5998	struct sym	*sym;
5999
6000	for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
6001	    sym = TAILQ_NEXT(sym, entry))
6002		;	/* nothing */
6003
6004	if (sym != NULL) {
6005		if (sym->persist == 1)
6006			return (0);
6007		else {
6008			free(sym->nam);
6009			free(sym->val);
6010			TAILQ_REMOVE(&symhead, sym, entry);
6011			free(sym);
6012		}
6013	}
6014	if ((sym = calloc(1, sizeof(*sym))) == NULL)
6015		return (-1);
6016
6017	sym->nam = strdup(nam);
6018	if (sym->nam == NULL) {
6019		free(sym);
6020		return (-1);
6021	}
6022	sym->val = strdup(val);
6023	if (sym->val == NULL) {
6024		free(sym->nam);
6025		free(sym);
6026		return (-1);
6027	}
6028	sym->used = 0;
6029	sym->persist = persist;
6030	TAILQ_INSERT_TAIL(&symhead, sym, entry);
6031	return (0);
6032}
6033
6034int
6035pfctl_cmdline_symset(char *s)
6036{
6037	char	*sym, *val;
6038	int	 ret;
6039
6040	if ((val = strrchr(s, '=')) == NULL)
6041		return (-1);
6042
6043	if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
6044		err(1, "pfctl_cmdline_symset: malloc");
6045
6046	strlcpy(sym, s, strlen(s) - strlen(val) + 1);
6047
6048	ret = symset(sym, val + 1, 1);
6049	free(sym);
6050
6051	return (ret);
6052}
6053
6054char *
6055symget(const char *nam)
6056{
6057	struct sym	*sym;
6058
6059	TAILQ_FOREACH(sym, &symhead, entry)
6060		if (strcmp(nam, sym->nam) == 0) {
6061			sym->used = 1;
6062			return (sym->val);
6063		}
6064	return (NULL);
6065}
6066
6067void
6068mv_rules(struct pf_ruleset *src, struct pf_ruleset *dst)
6069{
6070	int i;
6071	struct pf_rule *r;
6072
6073	for (i = 0; i < PF_RULESET_MAX; ++i) {
6074		while ((r = TAILQ_FIRST(src->rules[i].active.ptr))
6075		    != NULL) {
6076			TAILQ_REMOVE(src->rules[i].active.ptr, r, entries);
6077			TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries);
6078			dst->anchor->match++;
6079		}
6080		src->anchor->match = 0;
6081		while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr))
6082		    != NULL) {
6083			TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries);
6084			TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr,
6085				r, entries);
6086		}
6087	}
6088}
6089
6090void
6091decide_address_family(struct node_host *n, sa_family_t *af)
6092{
6093	if (*af != 0 || n == NULL)
6094		return;
6095	*af = n->af;
6096	while ((n = n->next) != NULL) {
6097		if (n->af != *af) {
6098			*af = 0;
6099			return;
6100		}
6101	}
6102}
6103
6104void
6105remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
6106{
6107	struct node_host	*n = *nh, *prev = NULL;
6108
6109	while (n != NULL) {
6110		if (*af && n->af && n->af != *af) {
6111			/* unlink and free n */
6112			struct node_host *next = n->next;
6113
6114			/* adjust tail pointer */
6115			if (n == (*nh)->tail)
6116				(*nh)->tail = prev;
6117			/* adjust previous node's next pointer */
6118			if (prev == NULL)
6119				*nh = next;
6120			else
6121				prev->next = next;
6122			/* free node */
6123			if (n->ifname != NULL)
6124				free(n->ifname);
6125			free(n);
6126			n = next;
6127		} else {
6128			if (n->af && !*af)
6129				*af = n->af;
6130			prev = n;
6131			n = n->next;
6132		}
6133	}
6134}
6135
6136int
6137invalid_redirect(struct node_host *nh, sa_family_t af)
6138{
6139	if (!af) {
6140		struct node_host *n;
6141
6142		/* tables and dyniftl are ok without an address family */
6143		for (n = nh; n != NULL; n = n->next) {
6144			if (n->addr.type != PF_ADDR_TABLE &&
6145			    n->addr.type != PF_ADDR_DYNIFTL) {
6146				yyerror("address family not given and "
6147				    "translation address expands to multiple "
6148				    "address families");
6149				return (1);
6150			}
6151		}
6152	}
6153	if (nh == NULL) {
6154		yyerror("no translation address with matching address family "
6155		    "found.");
6156		return (1);
6157	}
6158	return (0);
6159}
6160
6161int
6162atoul(char *s, u_long *ulvalp)
6163{
6164	u_long	 ulval;
6165	char	*ep;
6166
6167	errno = 0;
6168	ulval = strtoul(s, &ep, 0);
6169	if (s[0] == '\0' || *ep != '\0')
6170		return (-1);
6171	if (errno == ERANGE && ulval == ULONG_MAX)
6172		return (-1);
6173	*ulvalp = ulval;
6174	return (0);
6175}
6176
6177int
6178getservice(char *n)
6179{
6180	struct servent	*s;
6181	u_long		 ulval;
6182
6183	if (atoul(n, &ulval) == 0) {
6184		if (ulval > 65535) {
6185			yyerror("illegal port value %lu", ulval);
6186			return (-1);
6187		}
6188		return (htons(ulval));
6189	} else {
6190		s = getservbyname(n, "tcp");
6191		if (s == NULL)
6192			s = getservbyname(n, "udp");
6193		if (s == NULL) {
6194			yyerror("unknown port %s", n);
6195			return (-1);
6196		}
6197		return (s->s_port);
6198	}
6199}
6200
6201int
6202rule_label(struct pf_rule *r, char *s)
6203{
6204	if (s) {
6205		if (strlcpy(r->label, s, sizeof(r->label)) >=
6206		    sizeof(r->label)) {
6207			yyerror("rule label too long (max %d chars)",
6208			    sizeof(r->label)-1);
6209			return (-1);
6210		}
6211	}
6212	return (0);
6213}
6214
6215u_int16_t
6216parseicmpspec(char *w, sa_family_t af)
6217{
6218	const struct icmpcodeent	*p;
6219	u_long				 ulval;
6220	u_int8_t			 icmptype;
6221
6222	if (af == AF_INET)
6223		icmptype = returnicmpdefault >> 8;
6224	else
6225		icmptype = returnicmp6default >> 8;
6226
6227	if (atoul(w, &ulval) == -1) {
6228		if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
6229			yyerror("unknown icmp code %s", w);
6230			return (0);
6231		}
6232		ulval = p->code;
6233	}
6234	if (ulval > 255) {
6235		yyerror("invalid icmp code %lu", ulval);
6236		return (0);
6237	}
6238	return (icmptype << 8 | ulval);
6239}
6240
6241int
6242parseport(char *port, struct range *r, int extensions)
6243{
6244	char	*p = strchr(port, ':');
6245
6246	if (p == NULL) {
6247		if ((r->a = getservice(port)) == -1)
6248			return (-1);
6249		r->b = 0;
6250		r->t = PF_OP_NONE;
6251		return (0);
6252	}
6253	if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
6254		*p = 0;
6255		if ((r->a = getservice(port)) == -1)
6256			return (-1);
6257		r->b = 0;
6258		r->t = PF_OP_IRG;
6259		return (0);
6260	}
6261	if ((extensions & PPORT_RANGE)) {
6262		*p++ = 0;
6263		if ((r->a = getservice(port)) == -1 ||
6264		    (r->b = getservice(p)) == -1)
6265			return (-1);
6266		if (r->a == r->b) {
6267			r->b = 0;
6268			r->t = PF_OP_NONE;
6269		} else
6270			r->t = PF_OP_RRG;
6271		return (0);
6272	}
6273	return (-1);
6274}
6275
6276int
6277pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
6278{
6279	struct loadanchors	*la;
6280
6281	TAILQ_FOREACH(la, &loadanchorshead, entries) {
6282		if (pf->opts & PF_OPT_VERBOSE)
6283			fprintf(stderr, "\nLoading anchor %s from %s\n",
6284			    la->anchorname, la->filename);
6285		if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
6286		    la->anchorname, trans) == -1)
6287			return (-1);
6288	}
6289
6290	return (0);
6291}
6292
6293int
6294rt_tableid_max(void)
6295{
6296#ifdef __FreeBSD__
6297	int fibs;
6298	size_t l = sizeof(fibs);
6299
6300        if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1)
6301		fibs = 16;	/* XXX RT_MAXFIBS, at least limit it some. */
6302	/*
6303	 * As the OpenBSD code only compares > and not >= we need to adjust
6304	 * here given we only accept values of 0..n and want to avoid #ifdefs
6305	 * in the grammar.
6306	 */
6307	return (fibs - 1);
6308#else
6309	return (RT_TABLEID_MAX);
6310#endif
6311}
6312