parse.y revision 171172 
1/*	$OpenBSD: parse.y,v 1.517 2007/02/03 23:26:40 dhartmei Exp $	*/
2
3/*
4 * Copyright (c) 2001 Markus Friedl.  All rights reserved.
5 * Copyright (c) 2001 Daniel Hartmeier.  All rights reserved.
6 * Copyright (c) 2001 Theo de Raadt.  All rights reserved.
7 * Copyright (c) 2002,2003 Henning Brauer. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29%{
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: head/contrib/pf/pfctl/parse.y 171172 2007-07-03 12:30:03Z mlaier $");
32
33#include <sys/types.h>
34#include <sys/socket.h>
35#include <net/if.h>
36#include <netinet/in.h>
37#include <netinet/in_systm.h>
38#include <netinet/ip.h>
39#include <netinet/ip_icmp.h>
40#include <netinet/icmp6.h>
41#include <net/pfvar.h>
42#include <arpa/inet.h>
43#include <altq/altq.h>
44#include <altq/altq_cbq.h>
45#include <altq/altq_priq.h>
46#include <altq/altq_hfsc.h>
47
48#include <stdio.h>
49#include <stdlib.h>
50#include <netdb.h>
51#include <stdarg.h>
52#include <errno.h>
53#include <string.h>
54#include <ctype.h>
55#include <math.h>
56#include <err.h>
57#include <limits.h>
58#include <pwd.h>
59#include <grp.h>
60#include <md5.h>
61
62#include "pfctl_parser.h"
63#include "pfctl.h"
64
65#ifdef __FreeBSD__
66#define	HTONL(x)	(x) = htonl((__uint32_t)(x))
67#endif
68
69static struct pfctl	*pf = NULL;
70static FILE		*fin = NULL;
71static int		 debug = 0;
72static int		 lineno = 1;
73static int		 errors = 0;
74static int		 rulestate = 0;
75static u_int16_t	 returnicmpdefault =
76			    (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
77static u_int16_t	 returnicmp6default =
78			    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
79static int		 blockpolicy = PFRULE_DROP;
80static int		 require_order = 1;
81static int		 default_statelock;
82
83enum {
84	PFCTL_STATE_NONE,
85	PFCTL_STATE_OPTION,
86	PFCTL_STATE_SCRUB,
87	PFCTL_STATE_QUEUE,
88	PFCTL_STATE_NAT,
89	PFCTL_STATE_FILTER
90};
91
92struct node_proto {
93	u_int8_t		 proto;
94	struct node_proto	*next;
95	struct node_proto	*tail;
96};
97
98struct node_port {
99	u_int16_t		 port[2];
100	u_int8_t		 op;
101	struct node_port	*next;
102	struct node_port	*tail;
103};
104
105struct node_uid {
106	uid_t			 uid[2];
107	u_int8_t		 op;
108	struct node_uid		*next;
109	struct node_uid		*tail;
110};
111
112struct node_gid {
113	gid_t			 gid[2];
114	u_int8_t		 op;
115	struct node_gid		*next;
116	struct node_gid		*tail;
117};
118
119struct node_icmp {
120	u_int8_t		 code;
121	u_int8_t		 type;
122	u_int8_t		 proto;
123	struct node_icmp	*next;
124	struct node_icmp	*tail;
125};
126
127enum	{ PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
128	    PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
129	    PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
130	    PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
131	    PF_STATE_OPT_TIMEOUT };
132
133enum	{ PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
134
135struct node_state_opt {
136	int			 type;
137	union {
138		u_int32_t	 max_states;
139		u_int32_t	 max_src_states;
140		u_int32_t	 max_src_conn;
141		struct {
142			u_int32_t	limit;
143			u_int32_t	seconds;
144		}		 max_src_conn_rate;
145		struct {
146			u_int8_t	flush;
147			char		tblname[PF_TABLE_NAME_SIZE];
148		}		 overload;
149		u_int32_t	 max_src_nodes;
150		u_int8_t	 src_track;
151		u_int32_t	 statelock;
152		struct {
153			int		number;
154			u_int32_t	seconds;
155		}		 timeout;
156	}			 data;
157	struct node_state_opt	*next;
158	struct node_state_opt	*tail;
159};
160
161struct peer {
162	struct node_host	*host;
163	struct node_port	*port;
164};
165
166struct node_queue {
167	char			 queue[PF_QNAME_SIZE];
168	char			 parent[PF_QNAME_SIZE];
169	char			 ifname[IFNAMSIZ];
170	int			 scheduler;
171	struct node_queue	*next;
172	struct node_queue	*tail;
173}	*queues = NULL;
174
175struct node_qassign {
176	char		*qname;
177	char		*pqname;
178};
179
180struct filter_opts {
181	int			 marker;
182#define FOM_FLAGS	0x01
183#define FOM_ICMP	0x02
184#define FOM_TOS		0x04
185#define FOM_KEEP	0x08
186#define FOM_SRCTRACK	0x10
187	struct node_uid		*uid;
188	struct node_gid		*gid;
189	struct {
190		u_int8_t	 b1;
191		u_int8_t	 b2;
192		u_int16_t	 w;
193		u_int16_t	 w2;
194	} flags;
195	struct node_icmp	*icmpspec;
196	u_int32_t		 tos;
197	u_int32_t		 prob;
198	struct {
199		int			 action;
200		struct node_state_opt	*options;
201	} keep;
202	int			 fragment;
203	int			 allowopts;
204	char			*label;
205	struct node_qassign	 queues;
206	char			*tag;
207	char			*match_tag;
208	u_int8_t		 match_tag_not;
209	int			 rtableid;
210} filter_opts;
211
212struct antispoof_opts {
213	char			*label;
214	int			 rtableid;
215} antispoof_opts;
216
217struct scrub_opts {
218	int			marker;
219#define SOM_MINTTL	0x01
220#define SOM_MAXMSS	0x02
221#define SOM_FRAGCACHE	0x04
222	int			nodf;
223	int			minttl;
224	int			maxmss;
225	int			fragcache;
226	int			randomid;
227	int			reassemble_tcp;
228	int			rtableid;
229} scrub_opts;
230
231struct queue_opts {
232	int			marker;
233#define QOM_BWSPEC	0x01
234#define QOM_SCHEDULER	0x02
235#define QOM_PRIORITY	0x04
236#define QOM_TBRSIZE	0x08
237#define QOM_QLIMIT	0x10
238	struct node_queue_bw	queue_bwspec;
239	struct node_queue_opt	scheduler;
240	int			priority;
241	int			tbrsize;
242	int			qlimit;
243} queue_opts;
244
245struct table_opts {
246	int			flags;
247	int			init_addr;
248	struct node_tinithead	init_nodes;
249} table_opts;
250
251struct pool_opts {
252	int			 marker;
253#define POM_TYPE		0x01
254#define POM_STICKYADDRESS	0x02
255	u_int8_t		 opts;
256	int			 type;
257	int			 staticport;
258	struct pf_poolhashkey	*key;
259
260} pool_opts;
261
262
263struct node_hfsc_opts	hfsc_opts;
264
265int	yyerror(const char *, ...);
266int	disallow_table(struct node_host *, const char *);
267int	disallow_urpf_failed(struct node_host *, const char *);
268int	disallow_alias(struct node_host *, const char *);
269int	rule_consistent(struct pf_rule *, int);
270int	filter_consistent(struct pf_rule *, int);
271int	nat_consistent(struct pf_rule *);
272int	rdr_consistent(struct pf_rule *);
273int	process_tabledef(char *, struct table_opts *);
274int	yyparse(void);
275void	expand_label_str(char *, size_t, const char *, const char *);
276void	expand_label_if(const char *, char *, size_t, const char *);
277void	expand_label_addr(const char *, char *, size_t, u_int8_t,
278	    struct node_host *);
279void	expand_label_port(const char *, char *, size_t, struct node_port *);
280void	expand_label_proto(const char *, char *, size_t, u_int8_t);
281void	expand_label_nr(const char *, char *, size_t);
282void	expand_label(char *, size_t, const char *, u_int8_t, struct node_host *,
283	    struct node_port *, struct node_host *, struct node_port *,
284	    u_int8_t);
285void	expand_rule(struct pf_rule *, struct node_if *, struct node_host *,
286	    struct node_proto *, struct node_os*, struct node_host *,
287	    struct node_port *, struct node_host *, struct node_port *,
288	    struct node_uid *, struct node_gid *, struct node_icmp *,
289	    const char *);
290int	expand_altq(struct pf_altq *, struct node_if *, struct node_queue *,
291	    struct node_queue_bw bwspec, struct node_queue_opt *);
292int	expand_queue(struct pf_altq *, struct node_if *, struct node_queue *,
293	    struct node_queue_bw, struct node_queue_opt *);
294int	expand_skip_interface(struct node_if *);
295
296int	 check_rulestate(int);
297int	 kw_cmp(const void *, const void *);
298int	 lookup(char *);
299int	 lgetc(FILE *);
300int	 lungetc(int);
301int	 findeol(void);
302int	 yylex(void);
303int	 atoul(char *, u_long *);
304int	 getservice(char *);
305int	 rule_label(struct pf_rule *, char *);
306
307TAILQ_HEAD(symhead, sym)	 symhead = TAILQ_HEAD_INITIALIZER(symhead);
308struct sym {
309	TAILQ_ENTRY(sym)	 entries;
310	int			 used;
311	int			 persist;
312	char			*nam;
313	char			*val;
314};
315
316
317int	 symset(const char *, const char *, int);
318char	*symget(const char *);
319
320void	 mv_rules(struct pf_ruleset *, struct pf_ruleset *);
321void	 decide_address_family(struct node_host *, sa_family_t *);
322void	 remove_invalid_hosts(struct node_host **, sa_family_t *);
323int	 invalid_redirect(struct node_host *, sa_family_t);
324u_int16_t parseicmpspec(char *, sa_family_t);
325
326TAILQ_HEAD(loadanchorshead, loadanchors)
327    loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
328
329struct loadanchors {
330	TAILQ_ENTRY(loadanchors)	 entries;
331	char				*anchorname;
332	char				*filename;
333};
334
335typedef struct {
336	union {
337		u_int32_t		 number;
338		int			 i;
339		char			*string;
340		int			 rtableid;
341		struct {
342			u_int8_t	 b1;
343			u_int8_t	 b2;
344			u_int16_t	 w;
345			u_int16_t	 w2;
346		}			 b;
347		struct range {
348			int		 a;
349			int		 b;
350			int		 t;
351		}			 range;
352		struct node_if		*interface;
353		struct node_proto	*proto;
354		struct node_icmp	*icmp;
355		struct node_host	*host;
356		struct node_os		*os;
357		struct node_port	*port;
358		struct node_uid		*uid;
359		struct node_gid		*gid;
360		struct node_state_opt	*state_opt;
361		struct peer		 peer;
362		struct {
363			struct peer	 src, dst;
364			struct node_os	*src_os;
365		}			 fromto;
366		struct {
367			struct node_host	*host;
368			u_int8_t		 rt;
369			u_int8_t		 pool_opts;
370			sa_family_t		 af;
371			struct pf_poolhashkey	*key;
372		}			 route;
373		struct redirection {
374			struct node_host	*host;
375			struct range		 rport;
376		}			*redirection;
377		struct {
378			int			 action;
379			struct node_state_opt	*options;
380		}			 keep_state;
381		struct {
382			u_int8_t	 log;
383			u_int8_t	 logif;
384			u_int8_t	 quick;
385		}			 logquick;
386		struct {
387			int		 neg;
388			char		*name;
389		}			 tagged;
390		struct pf_poolhashkey	*hashkey;
391		struct node_queue	*queue;
392		struct node_queue_opt	 queue_options;
393		struct node_queue_bw	 queue_bwspec;
394		struct node_qassign	 qassign;
395		struct filter_opts	 filter_opts;
396		struct antispoof_opts	 antispoof_opts;
397		struct queue_opts	 queue_opts;
398		struct scrub_opts	 scrub_opts;
399		struct table_opts	 table_opts;
400		struct pool_opts	 pool_opts;
401		struct node_hfsc_opts	 hfsc_opts;
402	} v;
403	int lineno;
404} YYSTYPE;
405
406#define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
407	(!((addr).iflags & PFI_AFLAG_NOALIAS) ||		 \
408	!isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
409
410%}
411
412%token	PASS BLOCK SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
413%token	RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
414%token	ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
415%token	MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
416%token	NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
417%token	REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
418%token	SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY RANDOMID
419%token	REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
420%token	ANTISPOOF FOR
421%token	BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY
422%token	ALTQ CBQ PRIQ HFSC BANDWIDTH TBRSIZE LINKSHARE REALTIME UPPERLIMIT
423%token	QUEUE PRIORITY QLIMIT RTABLE
424%token	LOAD RULESET_OPTIMIZATION
425%token	STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
426%token	MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH
427%token	TAGGED TAG IFBOUND FLOATING STATEPOLICY ROUTE
428%token	<v.string>		STRING
429%token	<v.i>			PORTBINARY
430%type	<v.interface>		interface if_list if_item_not if_item
431%type	<v.number>		number icmptype icmp6type uid gid
432%type	<v.number>		tos not yesno
433%type	<v.i>			no dir af fragcache optimizer
434%type	<v.i>			sourcetrack flush unaryop statelock
435%type	<v.b>			action nataction natpass scrubaction
436%type	<v.b>			flags flag blockspec
437%type	<v.range>		port rport
438%type	<v.hashkey>		hashkey
439%type	<v.proto>		proto proto_list proto_item
440%type	<v.icmp>		icmpspec
441%type	<v.icmp>		icmp_list icmp_item
442%type	<v.icmp>		icmp6_list icmp6_item
443%type	<v.fromto>		fromto
444%type	<v.peer>		ipportspec from to
445%type	<v.host>		ipspec xhost host dynaddr host_list
446%type	<v.host>		redir_host_list redirspec
447%type	<v.host>		route_host route_host_list routespec
448%type	<v.os>			os xos os_list
449%type	<v.port>		portspec port_list port_item
450%type	<v.uid>			uids uid_list uid_item
451%type	<v.gid>			gids gid_list gid_item
452%type	<v.route>		route
453%type	<v.redirection>		redirection redirpool
454%type	<v.string>		label string tag anchorname
455%type	<v.keep_state>		keep
456%type	<v.state_opt>		state_opt_spec state_opt_list state_opt_item
457%type	<v.logquick>		logquick quick log logopts logopt
458%type	<v.interface>		antispoof_ifspc antispoof_iflst antispoof_if
459%type	<v.qassign>		qname
460%type	<v.queue>		qassign qassign_list qassign_item
461%type	<v.queue_options>	scheduler
462%type	<v.number>		cbqflags_list cbqflags_item
463%type	<v.number>		priqflags_list priqflags_item
464%type	<v.hfsc_opts>		hfscopts_list hfscopts_item hfsc_opts
465%type	<v.queue_bwspec>	bandwidth
466%type	<v.filter_opts>		filter_opts filter_opt filter_opts_l
467%type	<v.antispoof_opts>	antispoof_opts antispoof_opt antispoof_opts_l
468%type	<v.queue_opts>		queue_opts queue_opt queue_opts_l
469%type	<v.scrub_opts>		scrub_opts scrub_opt scrub_opts_l
470%type	<v.table_opts>		table_opts table_opt table_opts_l
471%type	<v.pool_opts>		pool_opts pool_opt pool_opts_l
472%type	<v.tagged>		tagged
473%type	<v.rtableid>		rtable
474%%
475
476ruleset		: /* empty */
477		| ruleset '\n'
478		| ruleset option '\n'
479		| ruleset scrubrule '\n'
480		| ruleset natrule '\n'
481		| ruleset binatrule '\n'
482		| ruleset pfrule '\n'
483		| ruleset anchorrule '\n'
484		| ruleset loadrule '\n'
485		| ruleset altqif '\n'
486		| ruleset queuespec '\n'
487		| ruleset varset '\n'
488		| ruleset antispoof '\n'
489		| ruleset tabledef '\n'
490		| '{' fakeanchor '}' '\n';
491		| ruleset error '\n'		{ errors++; }
492		;
493
494/*
495 * apply to previouslys specified rule: must be careful to note
496 * what that is: pf or nat or binat or rdr
497 */
498fakeanchor	: fakeanchor '\n'
499		| fakeanchor anchorrule '\n'
500		| fakeanchor binatrule '\n'
501		| fakeanchor natrule '\n'
502		| fakeanchor pfrule '\n'
503		| fakeanchor error '\n'
504		;
505
506optimizer	: string	{
507			if (!strcmp($1, "none"))
508				$$ = 0;
509			else if (!strcmp($1, "basic"))
510				$$ = PF_OPTIMIZE_BASIC;
511			else if (!strcmp($1, "profile"))
512				$$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
513			else {
514				yyerror("unknown ruleset-optimization %s", $$);
515				YYERROR;
516			}
517		}
518		;
519
520option		: SET OPTIMIZATION STRING		{
521			if (check_rulestate(PFCTL_STATE_OPTION)) {
522				free($3);
523				YYERROR;
524			}
525			if (pfctl_set_optimization(pf, $3) != 0) {
526				yyerror("unknown optimization %s", $3);
527				free($3);
528				YYERROR;
529			}
530			free($3);
531		}
532		| SET RULESET_OPTIMIZATION optimizer {
533			if (!(pf->opts & PF_OPT_OPTIMIZE)) {
534				pf->opts |= PF_OPT_OPTIMIZE;
535				pf->optimize = $3;
536			}
537		}
538		| SET TIMEOUT timeout_spec
539		| SET TIMEOUT '{' timeout_list '}'
540		| SET LIMIT limit_spec
541		| SET LIMIT '{' limit_list '}'
542		| SET LOGINTERFACE STRING		{
543			if (check_rulestate(PFCTL_STATE_OPTION)) {
544				free($3);
545				YYERROR;
546			}
547			if (pfctl_set_logif(pf, $3) != 0) {
548				yyerror("error setting loginterface %s", $3);
549				free($3);
550				YYERROR;
551			}
552			free($3);
553		}
554		| SET HOSTID number {
555			if ($3 == 0) {
556				yyerror("hostid must be non-zero");
557				YYERROR;
558			}
559			if (pfctl_set_hostid(pf, $3) != 0) {
560				yyerror("error setting hostid %08x", $3);
561				YYERROR;
562			}
563		}
564		| SET BLOCKPOLICY DROP	{
565			if (pf->opts & PF_OPT_VERBOSE)
566				printf("set block-policy drop\n");
567			if (check_rulestate(PFCTL_STATE_OPTION))
568				YYERROR;
569			blockpolicy = PFRULE_DROP;
570		}
571		| SET BLOCKPOLICY RETURN {
572			if (pf->opts & PF_OPT_VERBOSE)
573				printf("set block-policy return\n");
574			if (check_rulestate(PFCTL_STATE_OPTION))
575				YYERROR;
576			blockpolicy = PFRULE_RETURN;
577		}
578		| SET REQUIREORDER yesno {
579			if (pf->opts & PF_OPT_VERBOSE)
580				printf("set require-order %s\n",
581				    $3 == 1 ? "yes" : "no");
582			require_order = $3;
583		}
584		| SET FINGERPRINTS STRING {
585			if (pf->opts & PF_OPT_VERBOSE)
586				printf("set fingerprints \"%s\"\n", $3);
587			if (check_rulestate(PFCTL_STATE_OPTION)) {
588				free($3);
589				YYERROR;
590			}
591			if (!pf->anchor->name[0]) {
592				if (pfctl_file_fingerprints(pf->dev,
593				    pf->opts, $3)) {
594					yyerror("error loading "
595					    "fingerprints %s", $3);
596					free($3);
597					YYERROR;
598				}
599			}
600			free($3);
601		}
602		| SET STATEPOLICY statelock {
603			if (pf->opts & PF_OPT_VERBOSE)
604				switch ($3) {
605				case 0:
606					printf("set state-policy floating\n");
607					break;
608				case PFRULE_IFBOUND:
609					printf("set state-policy if-bound\n");
610					break;
611				}
612			default_statelock = $3;
613		}
614		| SET DEBUG STRING {
615			if (check_rulestate(PFCTL_STATE_OPTION)) {
616				free($3);
617				YYERROR;
618			}
619			if (pfctl_set_debug(pf, $3) != 0) {
620				yyerror("error setting debuglevel %s", $3);
621				free($3);
622				YYERROR;
623			}
624			free($3);
625		}
626		| SET SKIP interface {
627			if (expand_skip_interface($3) != 0) {
628				yyerror("error setting skip interface(s)");
629				YYERROR;
630			}
631		}
632		;
633
634string		: string STRING				{
635			if (asprintf(&$$, "%s %s", $1, $2) == -1)
636				err(1, "string: asprintf");
637			free($1);
638			free($2);
639		}
640		| STRING
641		;
642
643varset		: STRING '=' string		{
644			if (pf->opts & PF_OPT_VERBOSE)
645				printf("%s = \"%s\"\n", $1, $3);
646			if (symset($1, $3, 0) == -1)
647				err(1, "cannot store variable %s", $1);
648			free($1);
649			free($3);
650		}
651		;
652
653anchorname	: STRING			{ $$ = $1; }
654		| /* empty */			{ $$ = NULL; }
655		;
656
657optnl		: optnl '\n'
658		|
659		;
660
661pfa_anchorlist	: pfrule optnl
662		| anchorrule optnl
663		| pfa_anchorlist pfrule optnl
664		| pfa_anchorlist anchorrule optnl
665		;
666
667pfa_anchor	: '{'
668		{
669			char ta[PF_ANCHOR_NAME_SIZE];
670			struct pf_ruleset *rs;
671
672			/* steping into a brace anchor */
673			pf->asd++;
674			pf->bn++;
675			pf->brace = 1;
676
677			/* create a holding ruleset in the root */
678			snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
679			rs = pf_find_or_create_ruleset(ta);
680			if (rs == NULL)
681				err(1, "pfa_anchor: pf_find_or_create_ruleset");
682			pf->astack[pf->asd] = rs->anchor;
683			pf->anchor = rs->anchor;
684		} '\n' pfa_anchorlist '}'
685		{
686			pf->alast = pf->anchor;
687			pf->asd--;
688			pf->anchor = pf->astack[pf->asd];
689		}
690		| /* empty */
691		;
692
693anchorrule	: ANCHOR anchorname dir quick interface af proto fromto
694		    filter_opts pfa_anchor
695		{
696			struct pf_rule	r;
697
698			if (check_rulestate(PFCTL_STATE_FILTER)) {
699				if ($2)
700					free($2);
701				YYERROR;
702			}
703
704			if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
705				free($2);
706				yyerror("anchor names beginning with '_' "
707				    "are reserved for internal use");
708				YYERROR;
709			}
710
711			memset(&r, 0, sizeof(r));
712			if (pf->astack[pf->asd + 1]) {
713				/* move inline rules into relative location */
714				pf_anchor_setup(&r,
715				    &pf->astack[pf->asd]->ruleset,
716				    $2 ? $2 : pf->alast->name);
717
718				if (r.anchor == NULL)
719					err(1, "anchorrule: unable to "
720					    "create ruleset");
721
722				if (pf->alast != r.anchor) {
723					if (r.anchor->match) {
724						yyerror("inline anchor '%s' "
725						    "already exists",
726						    r.anchor->name);
727						YYERROR;
728					}
729					mv_rules(&pf->alast->ruleset,
730					    &r.anchor->ruleset);
731				}
732				pf_remove_if_empty_ruleset(&pf->alast->ruleset);
733				pf->alast = r.anchor;
734			} else {
735				if (!$2) {
736					yyerror("anchors without explicit "
737					    "rules must specify a name");
738					YYERROR;
739				}
740			}
741			r.direction = $3;
742			r.quick = $4.quick;
743			r.af = $6;
744			r.prob = $9.prob;
745			r.rtableid = $9.rtableid;
746
747			if ($9.match_tag)
748				if (strlcpy(r.match_tagname, $9.match_tag,
749				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
750					yyerror("tag too long, max %u chars",
751					    PF_TAG_NAME_SIZE - 1);
752					YYERROR;
753				}
754			r.match_tag_not = $9.match_tag_not;
755
756			decide_address_family($8.src.host, &r.af);
757			decide_address_family($8.dst.host, &r.af);
758
759			expand_rule(&r, $5, NULL, $7, $8.src_os,
760			    $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
761			    0, 0, 0, pf->astack[pf->asd + 1] ?
762			    pf->alast->name : $2);
763			free($2);
764			pf->astack[pf->asd + 1] = NULL;
765		}
766		| NATANCHOR string interface af proto fromto rtable {
767			struct pf_rule	r;
768
769			if (check_rulestate(PFCTL_STATE_NAT)) {
770				free($2);
771				YYERROR;
772			}
773
774			memset(&r, 0, sizeof(r));
775			r.action = PF_NAT;
776			r.af = $4;
777			r.rtableid = $7;
778
779			decide_address_family($6.src.host, &r.af);
780			decide_address_family($6.dst.host, &r.af);
781
782			expand_rule(&r, $3, NULL, $5, $6.src_os,
783			    $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
784			    0, 0, 0, $2);
785			free($2);
786		}
787		| RDRANCHOR string interface af proto fromto rtable {
788			struct pf_rule	r;
789
790			if (check_rulestate(PFCTL_STATE_NAT)) {
791				free($2);
792				YYERROR;
793			}
794
795			memset(&r, 0, sizeof(r));
796			r.action = PF_RDR;
797			r.af = $4;
798			r.rtableid = $7;
799
800			decide_address_family($6.src.host, &r.af);
801			decide_address_family($6.dst.host, &r.af);
802
803			if ($6.src.port != NULL) {
804				yyerror("source port parameter not supported"
805				    " in rdr-anchor");
806				YYERROR;
807			}
808			if ($6.dst.port != NULL) {
809				if ($6.dst.port->next != NULL) {
810					yyerror("destination port list "
811					    "expansion not supported in "
812					    "rdr-anchor");
813					YYERROR;
814				} else if ($6.dst.port->op != PF_OP_EQ) {
815					yyerror("destination port operators"
816					    " not supported in rdr-anchor");
817					YYERROR;
818				}
819				r.dst.port[0] = $6.dst.port->port[0];
820				r.dst.port[1] = $6.dst.port->port[1];
821				r.dst.port_op = $6.dst.port->op;
822			}
823
824			expand_rule(&r, $3, NULL, $5, $6.src_os,
825			    $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
826			    0, 0, 0, $2);
827			free($2);
828		}
829		| BINATANCHOR string interface af proto fromto rtable {
830			struct pf_rule	r;
831
832			if (check_rulestate(PFCTL_STATE_NAT)) {
833				free($2);
834				YYERROR;
835			}
836
837			memset(&r, 0, sizeof(r));
838			r.action = PF_BINAT;
839			r.af = $4;
840			r.rtableid = $7;
841			if ($5 != NULL) {
842				if ($5->next != NULL) {
843					yyerror("proto list expansion"
844					    " not supported in binat-anchor");
845					YYERROR;
846				}
847				r.proto = $5->proto;
848				free($5);
849			}
850
851			if ($6.src.host != NULL || $6.src.port != NULL ||
852			    $6.dst.host != NULL || $6.dst.port != NULL) {
853				yyerror("fromto parameter not supported"
854				    " in binat-anchor");
855				YYERROR;
856			}
857
858			decide_address_family($6.src.host, &r.af);
859			decide_address_family($6.dst.host, &r.af);
860
861			pfctl_add_rule(pf, &r, $2);
862			free($2);
863		}
864		;
865
866loadrule	: LOAD ANCHOR string FROM string	{
867			struct loadanchors	*loadanchor;
868
869			if (strlen(pf->anchor->name) + 1 +
870			    strlen($3) >= MAXPATHLEN) {
871				yyerror("anchorname %s too long, max %u\n",
872				    $3, MAXPATHLEN - 1);
873				free($3);
874				YYERROR;
875			}
876			loadanchor = calloc(1, sizeof(struct loadanchors));
877			if (loadanchor == NULL)
878				err(1, "loadrule: calloc");
879			if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
880			    NULL)
881				err(1, "loadrule: malloc");
882			if (pf->anchor->name[0])
883				snprintf(loadanchor->anchorname, MAXPATHLEN,
884				    "%s/%s", pf->anchor->name, $3);
885			else
886				strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
887			if ((loadanchor->filename = strdup($5)) == NULL)
888				err(1, "loadrule: strdup");
889
890			TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
891			    entries);
892
893			free($3);
894			free($5);
895		};
896
897scrubaction	: no SCRUB {
898			$$.b2 = $$.w = 0;
899			if ($1)
900				$$.b1 = PF_NOSCRUB;
901			else
902				$$.b1 = PF_SCRUB;
903		}
904		;
905
906scrubrule	: scrubaction dir logquick interface af proto fromto scrub_opts
907		{
908			struct pf_rule	r;
909
910			if (check_rulestate(PFCTL_STATE_SCRUB))
911				YYERROR;
912
913			memset(&r, 0, sizeof(r));
914
915			r.action = $1.b1;
916			r.direction = $2;
917
918			r.log = $3.log;
919			r.logif = $3.logif;
920			if ($3.quick) {
921				yyerror("scrub rules do not support 'quick'");
922				YYERROR;
923			}
924
925			r.af = $5;
926			if ($8.nodf)
927				r.rule_flag |= PFRULE_NODF;
928			if ($8.randomid)
929				r.rule_flag |= PFRULE_RANDOMID;
930			if ($8.reassemble_tcp) {
931				if (r.direction != PF_INOUT) {
932					yyerror("reassemble tcp rules can not "
933					    "specify direction");
934					YYERROR;
935				}
936				r.rule_flag |= PFRULE_REASSEMBLE_TCP;
937			}
938			if ($8.minttl)
939				r.min_ttl = $8.minttl;
940			if ($8.maxmss)
941				r.max_mss = $8.maxmss;
942			if ($8.fragcache)
943				r.rule_flag |= $8.fragcache;
944			r.rtableid = $8.rtableid;
945
946			expand_rule(&r, $4, NULL, $6, $7.src_os,
947			    $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
948			    NULL, NULL, NULL, "");
949		}
950		;
951
952scrub_opts	:	{
953				bzero(&scrub_opts, sizeof scrub_opts);
954				scrub_opts.rtableid = -1;
955			}
956		    scrub_opts_l
957			{ $$ = scrub_opts; }
958		| /* empty */ {
959			bzero(&scrub_opts, sizeof scrub_opts);
960			scrub_opts.rtableid = -1;
961			$$ = scrub_opts;
962		}
963		;
964
965scrub_opts_l	: scrub_opts_l scrub_opt
966		| scrub_opt
967		;
968
969scrub_opt	: NODF	{
970			if (scrub_opts.nodf) {
971				yyerror("no-df cannot be respecified");
972				YYERROR;
973			}
974			scrub_opts.nodf = 1;
975		}
976		| MINTTL number {
977			if (scrub_opts.marker & SOM_MINTTL) {
978				yyerror("min-ttl cannot be respecified");
979				YYERROR;
980			}
981			if ($2 > 255) {
982				yyerror("illegal min-ttl value %d", $2);
983				YYERROR;
984			}
985			scrub_opts.marker |= SOM_MINTTL;
986			scrub_opts.minttl = $2;
987		}
988		| MAXMSS number {
989			if (scrub_opts.marker & SOM_MAXMSS) {
990				yyerror("max-mss cannot be respecified");
991				YYERROR;
992			}
993			if ($2 > 65535) {
994				yyerror("illegal max-mss value %d", $2);
995				YYERROR;
996			}
997			scrub_opts.marker |= SOM_MAXMSS;
998			scrub_opts.maxmss = $2;
999		}
1000		| fragcache {
1001			if (scrub_opts.marker & SOM_FRAGCACHE) {
1002				yyerror("fragcache cannot be respecified");
1003				YYERROR;
1004			}
1005			scrub_opts.marker |= SOM_FRAGCACHE;
1006			scrub_opts.fragcache = $1;
1007		}
1008		| REASSEMBLE STRING {
1009			if (strcasecmp($2, "tcp") != 0) {
1010				yyerror("scrub reassemble supports only tcp, "
1011				    "not '%s'", $2);
1012				free($2);
1013				YYERROR;
1014			}
1015			free($2);
1016			if (scrub_opts.reassemble_tcp) {
1017				yyerror("reassemble tcp cannot be respecified");
1018				YYERROR;
1019			}
1020			scrub_opts.reassemble_tcp = 1;
1021		}
1022		| RANDOMID {
1023			if (scrub_opts.randomid) {
1024				yyerror("random-id cannot be respecified");
1025				YYERROR;
1026			}
1027			scrub_opts.randomid = 1;
1028		}
1029		| RTABLE number				{
1030#ifdef __FreeBSD__
1031			yyerror("rtable id not supported in FreeBSD, yet");
1032			YYERROR;
1033#else
1034			if ($2 > RT_TABLEID_MAX || $2 < 0) {
1035				yyerror("invalid rtable id");
1036				YYERROR;
1037			}
1038			scrub_opts.rtableid = $2;
1039#endif
1040		}
1041		;
1042
1043fragcache	: FRAGMENT REASSEMBLE	{ $$ = 0; /* default */ }
1044		| FRAGMENT FRAGCROP	{ $$ = PFRULE_FRAGCROP; }
1045		| FRAGMENT FRAGDROP	{ $$ = PFRULE_FRAGDROP; }
1046		;
1047
1048antispoof	: ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1049			struct pf_rule		 r;
1050			struct node_host	*h = NULL, *hh;
1051			struct node_if		*i, *j;
1052
1053			if (check_rulestate(PFCTL_STATE_FILTER))
1054				YYERROR;
1055
1056			for (i = $3; i; i = i->next) {
1057				bzero(&r, sizeof(r));
1058
1059				r.action = PF_DROP;
1060				r.direction = PF_IN;
1061				r.log = $2.log;
1062				r.logif = $2.logif;
1063				r.quick = $2.quick;
1064				r.af = $4;
1065				if (rule_label(&r, $5.label))
1066					YYERROR;
1067				r.rtableid = $5.rtableid;
1068				j = calloc(1, sizeof(struct node_if));
1069				if (j == NULL)
1070					err(1, "antispoof: calloc");
1071				if (strlcpy(j->ifname, i->ifname,
1072				    sizeof(j->ifname)) >= sizeof(j->ifname)) {
1073					free(j);
1074					yyerror("interface name too long");
1075					YYERROR;
1076				}
1077				j->not = 1;
1078				if (i->dynamic) {
1079					h = calloc(1, sizeof(*h));
1080					if (h == NULL)
1081						err(1, "address: calloc");
1082					h->addr.type = PF_ADDR_DYNIFTL;
1083					set_ipmask(h, 128);
1084					if (strlcpy(h->addr.v.ifname, i->ifname,
1085					    sizeof(h->addr.v.ifname)) >=
1086					    sizeof(h->addr.v.ifname)) {
1087						free(h);
1088						yyerror(
1089						    "interface name too long");
1090						YYERROR;
1091					}
1092					hh = malloc(sizeof(*hh));
1093					if (hh == NULL)
1094						 err(1, "address: malloc");
1095					bcopy(h, hh, sizeof(*hh));
1096					h->addr.iflags = PFI_AFLAG_NETWORK;
1097				} else {
1098					h = ifa_lookup(j->ifname,
1099					    PFI_AFLAG_NETWORK);
1100					hh = NULL;
1101				}
1102
1103				if (h != NULL)
1104					expand_rule(&r, j, NULL, NULL, NULL, h,
1105					    NULL, NULL, NULL, NULL, NULL,
1106					    NULL, "");
1107
1108				if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1109					bzero(&r, sizeof(r));
1110
1111					r.action = PF_DROP;
1112					r.direction = PF_IN;
1113					r.log = $2.log;
1114					r.quick = $2.quick;
1115					r.af = $4;
1116					if (rule_label(&r, $5.label))
1117						YYERROR;
1118					r.rtableid = $5.rtableid;
1119					if (hh != NULL)
1120						h = hh;
1121					else
1122						h = ifa_lookup(i->ifname, 0);
1123					if (h != NULL)
1124						expand_rule(&r, NULL, NULL,
1125						    NULL, NULL, h, NULL, NULL,
1126						    NULL, NULL, NULL, NULL, "");
1127				} else
1128					free(hh);
1129			}
1130			free($5.label);
1131		}
1132		;
1133
1134antispoof_ifspc	: FOR antispoof_if		{ $$ = $2; }
1135		| FOR '{' antispoof_iflst '}'	{ $$ = $3; }
1136		;
1137
1138antispoof_iflst	: antispoof_if				{ $$ = $1; }
1139		| antispoof_iflst comma antispoof_if	{
1140			$1->tail->next = $3;
1141			$1->tail = $3;
1142			$$ = $1;
1143		}
1144		;
1145
1146antispoof_if  : if_item				{ $$ = $1; }
1147		| '(' if_item ')'		{
1148			$2->dynamic = 1;
1149			$$ = $2;
1150		}
1151		;
1152
1153antispoof_opts	:	{
1154				bzero(&antispoof_opts, sizeof antispoof_opts);
1155				antispoof_opts.rtableid = -1;
1156			}
1157		    antispoof_opts_l
1158			{ $$ = antispoof_opts; }
1159		| /* empty */	{
1160			bzero(&antispoof_opts, sizeof antispoof_opts);
1161			antispoof_opts.rtableid = -1;
1162			$$ = antispoof_opts;
1163		}
1164		;
1165
1166antispoof_opts_l	: antispoof_opts_l antispoof_opt
1167			| antispoof_opt
1168			;
1169
1170antispoof_opt	: label	{
1171			if (antispoof_opts.label) {
1172				yyerror("label cannot be redefined");
1173				YYERROR;
1174			}
1175			antispoof_opts.label = $1;
1176		}
1177		| RTABLE number				{
1178#ifdef __FreeBSD__
1179			yyerror("rtable id not supported in FreeBSD, yet");
1180			YYERROR;
1181#else
1182			if ($2 > RT_TABLEID_MAX || $2 < 0) {
1183				yyerror("invalid rtable id");
1184				YYERROR;
1185			}
1186			antispoof_opts.rtableid = $2;
1187#endif
1188		}
1189		;
1190
1191not		: '!'		{ $$ = 1; }
1192		| /* empty */	{ $$ = 0; }
1193		;
1194
1195tabledef	: TABLE '<' STRING '>' table_opts {
1196			struct node_host	 *h, *nh;
1197			struct node_tinit	 *ti, *nti;
1198
1199			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1200				yyerror("table name too long, max %d chars",
1201				    PF_TABLE_NAME_SIZE - 1);
1202				free($3);
1203				YYERROR;
1204			}
1205			if (pf->loadopt & PFCTL_FLAG_TABLE)
1206				if (process_tabledef($3, &$5)) {
1207					free($3);
1208					YYERROR;
1209				}
1210			free($3);
1211			for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1212			    ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1213				if (ti->file)
1214					free(ti->file);
1215				for (h = ti->host; h != NULL; h = nh) {
1216					nh = h->next;
1217					free(h);
1218				}
1219				nti = SIMPLEQ_NEXT(ti, entries);
1220				free(ti);
1221			}
1222		}
1223		;
1224
1225table_opts	:	{
1226			bzero(&table_opts, sizeof table_opts);
1227			SIMPLEQ_INIT(&table_opts.init_nodes);
1228		}
1229		    table_opts_l
1230			{ $$ = table_opts; }
1231		| /* empty */
1232			{
1233			bzero(&table_opts, sizeof table_opts);
1234			SIMPLEQ_INIT(&table_opts.init_nodes);
1235			$$ = table_opts;
1236		}
1237		;
1238
1239table_opts_l	: table_opts_l table_opt
1240		| table_opt
1241		;
1242
1243table_opt	: STRING		{
1244			if (!strcmp($1, "const"))
1245				table_opts.flags |= PFR_TFLAG_CONST;
1246			else if (!strcmp($1, "persist"))
1247				table_opts.flags |= PFR_TFLAG_PERSIST;
1248			else {
1249				yyerror("invalid table option '%s'", $1);
1250				free($1);
1251				YYERROR;
1252			}
1253			free($1);
1254		}
1255		| '{' '}'		{ table_opts.init_addr = 1; }
1256		| '{' host_list '}'	{
1257			struct node_host	*n;
1258			struct node_tinit	*ti;
1259
1260			for (n = $2; n != NULL; n = n->next) {
1261				switch (n->addr.type) {
1262				case PF_ADDR_ADDRMASK:
1263					continue; /* ok */
1264				case PF_ADDR_DYNIFTL:
1265					yyerror("dynamic addresses are not "
1266					    "permitted inside tables");
1267					break;
1268				case PF_ADDR_TABLE:
1269					yyerror("tables cannot contain tables");
1270					break;
1271				case PF_ADDR_NOROUTE:
1272					yyerror("\"no-route\" is not permitted "
1273					    "inside tables");
1274					break;
1275				case PF_ADDR_URPFFAILED:
1276					yyerror("\"urpf-failed\" is not "
1277					    "permitted inside tables");
1278					break;
1279				default:
1280					yyerror("unknown address type %d",
1281					    n->addr.type);
1282				}
1283				YYERROR;
1284			}
1285			if (!(ti = calloc(1, sizeof(*ti))))
1286				err(1, "table_opt: calloc");
1287			ti->host = $2;
1288			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1289			    entries);
1290			table_opts.init_addr = 1;
1291		}
1292		| FILENAME STRING	{
1293			struct node_tinit	*ti;
1294
1295			if (!(ti = calloc(1, sizeof(*ti))))
1296				err(1, "table_opt: calloc");
1297			ti->file = $2;
1298			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1299			    entries);
1300			table_opts.init_addr = 1;
1301		}
1302		;
1303
1304altqif		: ALTQ interface queue_opts QUEUE qassign {
1305			struct pf_altq	a;
1306
1307			if (check_rulestate(PFCTL_STATE_QUEUE))
1308				YYERROR;
1309
1310			memset(&a, 0, sizeof(a));
1311			if ($3.scheduler.qtype == ALTQT_NONE) {
1312				yyerror("no scheduler specified!");
1313				YYERROR;
1314			}
1315			a.scheduler = $3.scheduler.qtype;
1316			a.qlimit = $3.qlimit;
1317			a.tbrsize = $3.tbrsize;
1318			if ($5 == NULL) {
1319				yyerror("no child queues specified");
1320				YYERROR;
1321			}
1322			if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1323			    &$3.scheduler))
1324				YYERROR;
1325		}
1326		;
1327
1328queuespec	: QUEUE STRING interface queue_opts qassign {
1329			struct pf_altq	a;
1330
1331			if (check_rulestate(PFCTL_STATE_QUEUE)) {
1332				free($2);
1333				YYERROR;
1334			}
1335
1336			memset(&a, 0, sizeof(a));
1337
1338			if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1339			    sizeof(a.qname)) {
1340				yyerror("queue name too long (max "
1341				    "%d chars)", PF_QNAME_SIZE-1);
1342				free($2);
1343				YYERROR;
1344			}
1345			free($2);
1346			if ($4.tbrsize) {
1347				yyerror("cannot specify tbrsize for queue");
1348				YYERROR;
1349			}
1350			if ($4.priority > 255) {
1351				yyerror("priority out of range: max 255");
1352				YYERROR;
1353			}
1354			a.priority = $4.priority;
1355			a.qlimit = $4.qlimit;
1356			a.scheduler = $4.scheduler.qtype;
1357			if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1358			    &$4.scheduler)) {
1359				yyerror("errors in queue definition");
1360				YYERROR;
1361			}
1362		}
1363		;
1364
1365queue_opts	:	{
1366			bzero(&queue_opts, sizeof queue_opts);
1367			queue_opts.priority = DEFAULT_PRIORITY;
1368			queue_opts.qlimit = DEFAULT_QLIMIT;
1369			queue_opts.scheduler.qtype = ALTQT_NONE;
1370			queue_opts.queue_bwspec.bw_percent = 100;
1371		}
1372		    queue_opts_l
1373			{ $$ = queue_opts; }
1374		| /* empty */ {
1375			bzero(&queue_opts, sizeof queue_opts);
1376			queue_opts.priority = DEFAULT_PRIORITY;
1377			queue_opts.qlimit = DEFAULT_QLIMIT;
1378			queue_opts.scheduler.qtype = ALTQT_NONE;
1379			queue_opts.queue_bwspec.bw_percent = 100;
1380			$$ = queue_opts;
1381		}
1382		;
1383
1384queue_opts_l	: queue_opts_l queue_opt
1385		| queue_opt
1386		;
1387
1388queue_opt	: BANDWIDTH bandwidth	{
1389			if (queue_opts.marker & QOM_BWSPEC) {
1390				yyerror("bandwidth cannot be respecified");
1391				YYERROR;
1392			}
1393			queue_opts.marker |= QOM_BWSPEC;
1394			queue_opts.queue_bwspec = $2;
1395		}
1396		| PRIORITY number	{
1397			if (queue_opts.marker & QOM_PRIORITY) {
1398				yyerror("priority cannot be respecified");
1399				YYERROR;
1400			}
1401			if ($2 > 255) {
1402				yyerror("priority out of range: max 255");
1403				YYERROR;
1404			}
1405			queue_opts.marker |= QOM_PRIORITY;
1406			queue_opts.priority = $2;
1407		}
1408		| QLIMIT number	{
1409			if (queue_opts.marker & QOM_QLIMIT) {
1410				yyerror("qlimit cannot be respecified");
1411				YYERROR;
1412			}
1413			if ($2 > 65535) {
1414				yyerror("qlimit out of range: max 65535");
1415				YYERROR;
1416			}
1417			queue_opts.marker |= QOM_QLIMIT;
1418			queue_opts.qlimit = $2;
1419		}
1420		| scheduler	{
1421			if (queue_opts.marker & QOM_SCHEDULER) {
1422				yyerror("scheduler cannot be respecified");
1423				YYERROR;
1424			}
1425			queue_opts.marker |= QOM_SCHEDULER;
1426			queue_opts.scheduler = $1;
1427		}
1428		| TBRSIZE number	{
1429			if (queue_opts.marker & QOM_TBRSIZE) {
1430				yyerror("tbrsize cannot be respecified");
1431				YYERROR;
1432			}
1433			if ($2 > 65535) {
1434				yyerror("tbrsize too big: max 65535");
1435				YYERROR;
1436			}
1437			queue_opts.marker |= QOM_TBRSIZE;
1438			queue_opts.tbrsize = $2;
1439		}
1440		;
1441
1442bandwidth	: STRING {
1443			double	 bps;
1444			char	*cp;
1445
1446			$$.bw_percent = 0;
1447
1448			bps = strtod($1, &cp);
1449			if (cp != NULL) {
1450				if (!strcmp(cp, "b"))
1451					; /* nothing */
1452				else if (!strcmp(cp, "Kb"))
1453					bps *= 1000;
1454				else if (!strcmp(cp, "Mb"))
1455					bps *= 1000 * 1000;
1456				else if (!strcmp(cp, "Gb"))
1457					bps *= 1000 * 1000 * 1000;
1458				else if (!strcmp(cp, "%")) {
1459					if (bps < 0 || bps > 100) {
1460						yyerror("bandwidth spec "
1461						    "out of range");
1462						free($1);
1463						YYERROR;
1464					}
1465					$$.bw_percent = bps;
1466					bps = 0;
1467				} else {
1468					yyerror("unknown unit %s", cp);
1469					free($1);
1470					YYERROR;
1471				}
1472			}
1473			free($1);
1474			$$.bw_absolute = (u_int32_t)bps;
1475		}
1476		;
1477
1478scheduler	: CBQ				{
1479			$$.qtype = ALTQT_CBQ;
1480			$$.data.cbq_opts.flags = 0;
1481		}
1482		| CBQ '(' cbqflags_list ')'	{
1483			$$.qtype = ALTQT_CBQ;
1484			$$.data.cbq_opts.flags = $3;
1485		}
1486		| PRIQ				{
1487			$$.qtype = ALTQT_PRIQ;
1488			$$.data.priq_opts.flags = 0;
1489		}
1490		| PRIQ '(' priqflags_list ')'	{
1491			$$.qtype = ALTQT_PRIQ;
1492			$$.data.priq_opts.flags = $3;
1493		}
1494		| HFSC				{
1495			$$.qtype = ALTQT_HFSC;
1496			bzero(&$$.data.hfsc_opts,
1497			    sizeof(struct node_hfsc_opts));
1498		}
1499		| HFSC '(' hfsc_opts ')'	{
1500			$$.qtype = ALTQT_HFSC;
1501			$$.data.hfsc_opts = $3;
1502		}
1503		;
1504
1505cbqflags_list	: cbqflags_item				{ $$ |= $1; }
1506		| cbqflags_list comma cbqflags_item	{ $$ |= $3; }
1507		;
1508
1509cbqflags_item	: STRING	{
1510			if (!strcmp($1, "default"))
1511				$$ = CBQCLF_DEFCLASS;
1512			else if (!strcmp($1, "borrow"))
1513				$$ = CBQCLF_BORROW;
1514			else if (!strcmp($1, "red"))
1515				$$ = CBQCLF_RED;
1516			else if (!strcmp($1, "ecn"))
1517				$$ = CBQCLF_RED|CBQCLF_ECN;
1518			else if (!strcmp($1, "rio"))
1519				$$ = CBQCLF_RIO;
1520			else {
1521				yyerror("unknown cbq flag \"%s\"", $1);
1522				free($1);
1523				YYERROR;
1524			}
1525			free($1);
1526		}
1527		;
1528
1529priqflags_list	: priqflags_item			{ $$ |= $1; }
1530		| priqflags_list comma priqflags_item	{ $$ |= $3; }
1531		;
1532
1533priqflags_item	: STRING	{
1534			if (!strcmp($1, "default"))
1535				$$ = PRCF_DEFAULTCLASS;
1536			else if (!strcmp($1, "red"))
1537				$$ = PRCF_RED;
1538			else if (!strcmp($1, "ecn"))
1539				$$ = PRCF_RED|PRCF_ECN;
1540			else if (!strcmp($1, "rio"))
1541				$$ = PRCF_RIO;
1542			else {
1543				yyerror("unknown priq flag \"%s\"", $1);
1544				free($1);
1545				YYERROR;
1546			}
1547			free($1);
1548		}
1549		;
1550
1551hfsc_opts	:	{
1552				bzero(&hfsc_opts,
1553				    sizeof(struct node_hfsc_opts));
1554			}
1555		    hfscopts_list				{
1556			$$ = hfsc_opts;
1557		}
1558		;
1559
1560hfscopts_list	: hfscopts_item
1561		| hfscopts_list comma hfscopts_item
1562		;
1563
1564hfscopts_item	: LINKSHARE bandwidth				{
1565			if (hfsc_opts.linkshare.used) {
1566				yyerror("linkshare already specified");
1567				YYERROR;
1568			}
1569			hfsc_opts.linkshare.m2 = $2;
1570			hfsc_opts.linkshare.used = 1;
1571		}
1572		| LINKSHARE '(' bandwidth comma number comma bandwidth ')'
1573		    {
1574			if (hfsc_opts.linkshare.used) {
1575				yyerror("linkshare already specified");
1576				YYERROR;
1577			}
1578			hfsc_opts.linkshare.m1 = $3;
1579			hfsc_opts.linkshare.d = $5;
1580			hfsc_opts.linkshare.m2 = $7;
1581			hfsc_opts.linkshare.used = 1;
1582		}
1583		| REALTIME bandwidth				{
1584			if (hfsc_opts.realtime.used) {
1585				yyerror("realtime already specified");
1586				YYERROR;
1587			}
1588			hfsc_opts.realtime.m2 = $2;
1589			hfsc_opts.realtime.used = 1;
1590		}
1591		| REALTIME '(' bandwidth comma number comma bandwidth ')'
1592		    {
1593			if (hfsc_opts.realtime.used) {
1594				yyerror("realtime already specified");
1595				YYERROR;
1596			}
1597			hfsc_opts.realtime.m1 = $3;
1598			hfsc_opts.realtime.d = $5;
1599			hfsc_opts.realtime.m2 = $7;
1600			hfsc_opts.realtime.used = 1;
1601		}
1602		| UPPERLIMIT bandwidth				{
1603			if (hfsc_opts.upperlimit.used) {
1604				yyerror("upperlimit already specified");
1605				YYERROR;
1606			}
1607			hfsc_opts.upperlimit.m2 = $2;
1608			hfsc_opts.upperlimit.used = 1;
1609		}
1610		| UPPERLIMIT '(' bandwidth comma number comma bandwidth ')'
1611		    {
1612			if (hfsc_opts.upperlimit.used) {
1613				yyerror("upperlimit already specified");
1614				YYERROR;
1615			}
1616			hfsc_opts.upperlimit.m1 = $3;
1617			hfsc_opts.upperlimit.d = $5;
1618			hfsc_opts.upperlimit.m2 = $7;
1619			hfsc_opts.upperlimit.used = 1;
1620		}
1621		| STRING	{
1622			if (!strcmp($1, "default"))
1623				hfsc_opts.flags |= HFCF_DEFAULTCLASS;
1624			else if (!strcmp($1, "red"))
1625				hfsc_opts.flags |= HFCF_RED;
1626			else if (!strcmp($1, "ecn"))
1627				hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
1628			else if (!strcmp($1, "rio"))
1629				hfsc_opts.flags |= HFCF_RIO;
1630			else {
1631				yyerror("unknown hfsc flag \"%s\"", $1);
1632				free($1);
1633				YYERROR;
1634			}
1635			free($1);
1636		}
1637		;
1638
1639qassign		: /* empty */		{ $$ = NULL; }
1640		| qassign_item		{ $$ = $1; }
1641		| '{' qassign_list '}'	{ $$ = $2; }
1642		;
1643
1644qassign_list	: qassign_item			{ $$ = $1; }
1645		| qassign_list comma qassign_item	{
1646			$1->tail->next = $3;
1647			$1->tail = $3;
1648			$$ = $1;
1649		}
1650		;
1651
1652qassign_item	: STRING			{
1653			$$ = calloc(1, sizeof(struct node_queue));
1654			if ($$ == NULL)
1655				err(1, "qassign_item: calloc");
1656			if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
1657			    sizeof($$->queue)) {
1658				yyerror("queue name '%s' too long (max "
1659				    "%d chars)", $1, sizeof($$->queue)-1);
1660				free($1);
1661				free($$);
1662				YYERROR;
1663			}
1664			free($1);
1665			$$->next = NULL;
1666			$$->tail = $$;
1667		}
1668		;
1669
1670pfrule		: action dir logquick interface route af proto fromto
1671		    filter_opts
1672		{
1673			struct pf_rule		 r;
1674			struct node_state_opt	*o;
1675			struct node_proto	*proto;
1676			int			 srctrack = 0;
1677			int			 statelock = 0;
1678			int			 adaptive = 0;
1679
1680			if (check_rulestate(PFCTL_STATE_FILTER))
1681				YYERROR;
1682
1683			memset(&r, 0, sizeof(r));
1684
1685			r.action = $1.b1;
1686			switch ($1.b2) {
1687			case PFRULE_RETURNRST:
1688				r.rule_flag |= PFRULE_RETURNRST;
1689				r.return_ttl = $1.w;
1690				break;
1691			case PFRULE_RETURNICMP:
1692				r.rule_flag |= PFRULE_RETURNICMP;
1693				r.return_icmp = $1.w;
1694				r.return_icmp6 = $1.w2;
1695				break;
1696			case PFRULE_RETURN:
1697				r.rule_flag |= PFRULE_RETURN;
1698				r.return_icmp = $1.w;
1699				r.return_icmp6 = $1.w2;
1700				break;
1701			}
1702			r.direction = $2;
1703			r.log = $3.log;
1704			r.logif = $3.logif;
1705			r.quick = $3.quick;
1706			r.prob = $9.prob;
1707			r.rtableid = $9.rtableid;
1708
1709			r.af = $6;
1710			if ($9.tag)
1711				if (strlcpy(r.tagname, $9.tag,
1712				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1713					yyerror("tag too long, max %u chars",
1714					    PF_TAG_NAME_SIZE - 1);
1715					YYERROR;
1716				}
1717			if ($9.match_tag)
1718				if (strlcpy(r.match_tagname, $9.match_tag,
1719				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1720					yyerror("tag too long, max %u chars",
1721					    PF_TAG_NAME_SIZE - 1);
1722					YYERROR;
1723				}
1724			r.match_tag_not = $9.match_tag_not;
1725			if (rule_label(&r, $9.label))
1726				YYERROR;
1727			free($9.label);
1728			r.flags = $9.flags.b1;
1729			r.flagset = $9.flags.b2;
1730			if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
1731				yyerror("flags always false");
1732				YYERROR;
1733			}
1734			if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
1735				for (proto = $7; proto != NULL &&
1736				    proto->proto != IPPROTO_TCP;
1737				    proto = proto->next)
1738					;	/* nothing */
1739				if (proto == NULL && $7 != NULL) {
1740					if ($9.flags.b1 || $9.flags.b2)
1741						yyerror(
1742						    "flags only apply to tcp");
1743					if ($8.src_os)
1744						yyerror(
1745						    "OS fingerprinting only "
1746						    "apply to tcp");
1747					YYERROR;
1748				}
1749#if 0
1750				if (($9.flags.b1 & parse_flags("S")) == 0 &&
1751				    $8.src_os) {
1752					yyerror("OS fingerprinting requires "
1753					    "the SYN TCP flag (flags S/SA)");
1754					YYERROR;
1755				}
1756#endif
1757			}
1758
1759			r.tos = $9.tos;
1760			r.keep_state = $9.keep.action;
1761
1762			/* 'keep state' by default on pass rules. */
1763			if (!r.keep_state && !r.action &&
1764			    !($9.marker & FOM_KEEP))
1765				r.keep_state = PF_STATE_NORMAL;
1766
1767			o = $9.keep.options;
1768			while (o) {
1769				struct node_state_opt	*p = o;
1770
1771				switch (o->type) {
1772				case PF_STATE_OPT_MAX:
1773					if (r.max_states) {
1774						yyerror("state option 'max' "
1775						    "multiple definitions");
1776						YYERROR;
1777					}
1778					r.max_states = o->data.max_states;
1779					break;
1780				case PF_STATE_OPT_NOSYNC:
1781					if (r.rule_flag & PFRULE_NOSYNC) {
1782						yyerror("state option 'sync' "
1783						    "multiple definitions");
1784						YYERROR;
1785					}
1786					r.rule_flag |= PFRULE_NOSYNC;
1787					break;
1788				case PF_STATE_OPT_SRCTRACK:
1789					if (srctrack) {
1790						yyerror("state option "
1791						    "'source-track' "
1792						    "multiple definitions");
1793						YYERROR;
1794					}
1795					srctrack =  o->data.src_track;
1796					r.rule_flag |= PFRULE_SRCTRACK;
1797					break;
1798				case PF_STATE_OPT_MAX_SRC_STATES:
1799					if (r.max_src_states) {
1800						yyerror("state option "
1801						    "'max-src-states' "
1802						    "multiple definitions");
1803						YYERROR;
1804					}
1805					if (o->data.max_src_states == 0) {
1806						yyerror("'max-src-states' must "
1807						    "be > 0");
1808						YYERROR;
1809					}
1810					r.max_src_states =
1811					    o->data.max_src_states;
1812					r.rule_flag |= PFRULE_SRCTRACK;
1813					break;
1814				case PF_STATE_OPT_OVERLOAD:
1815					if (r.overload_tblname[0]) {
1816						yyerror("multiple 'overload' "
1817						    "table definitions");
1818						YYERROR;
1819					}
1820					if (strlcpy(r.overload_tblname,
1821					    o->data.overload.tblname,
1822					    PF_TABLE_NAME_SIZE) >=
1823					    PF_TABLE_NAME_SIZE) {
1824						yyerror("state option: "
1825						    "strlcpy");
1826						YYERROR;
1827					}
1828					r.flush = o->data.overload.flush;
1829					break;
1830				case PF_STATE_OPT_MAX_SRC_CONN:
1831					if (r.max_src_conn) {
1832						yyerror("state option "
1833						    "'max-src-conn' "
1834						    "multiple definitions");
1835						YYERROR;
1836					}
1837					if (o->data.max_src_conn == 0) {
1838						yyerror("'max-src-conn' "
1839						    "must be > 0");
1840						YYERROR;
1841					}
1842					r.max_src_conn =
1843					    o->data.max_src_conn;
1844					r.rule_flag |= PFRULE_SRCTRACK |
1845					    PFRULE_RULESRCTRACK;
1846					break;
1847				case PF_STATE_OPT_MAX_SRC_CONN_RATE:
1848					if (r.max_src_conn_rate.limit) {
1849						yyerror("state option "
1850						    "'max-src-conn-rate' "
1851						    "multiple definitions");
1852						YYERROR;
1853					}
1854					if (!o->data.max_src_conn_rate.limit ||
1855					    !o->data.max_src_conn_rate.seconds) {
1856						yyerror("'max-src-conn-rate' "
1857						    "values must be > 0");
1858						YYERROR;
1859					}
1860					if (o->data.max_src_conn_rate.limit >
1861					    PF_THRESHOLD_MAX) {
1862						yyerror("'max-src-conn-rate' "
1863						    "maximum rate must be < %u",
1864						    PF_THRESHOLD_MAX);
1865						YYERROR;
1866					}
1867					r.max_src_conn_rate.limit =
1868					    o->data.max_src_conn_rate.limit;
1869					r.max_src_conn_rate.seconds =
1870					    o->data.max_src_conn_rate.seconds;
1871					r.rule_flag |= PFRULE_SRCTRACK |
1872					    PFRULE_RULESRCTRACK;
1873					break;
1874				case PF_STATE_OPT_MAX_SRC_NODES:
1875					if (r.max_src_nodes) {
1876						yyerror("state option "
1877						    "'max-src-nodes' "
1878						    "multiple definitions");
1879						YYERROR;
1880					}
1881					if (o->data.max_src_nodes == 0) {
1882						yyerror("'max-src-nodes' must "
1883						    "be > 0");
1884						YYERROR;
1885					}
1886					r.max_src_nodes =
1887					    o->data.max_src_nodes;
1888					r.rule_flag |= PFRULE_SRCTRACK |
1889					    PFRULE_RULESRCTRACK;
1890					break;
1891				case PF_STATE_OPT_STATELOCK:
1892					if (statelock) {
1893						yyerror("state locking option: "
1894						    "multiple definitions");
1895						YYERROR;
1896					}
1897					statelock = 1;
1898					r.rule_flag |= o->data.statelock;
1899					break;
1900				case PF_STATE_OPT_TIMEOUT:
1901					if (o->data.timeout.number ==
1902					    PFTM_ADAPTIVE_START ||
1903					    o->data.timeout.number ==
1904					    PFTM_ADAPTIVE_END)
1905						adaptive = 1;
1906					if (r.timeout[o->data.timeout.number]) {
1907						yyerror("state timeout %s "
1908						    "multiple definitions",
1909						    pf_timeouts[o->data.
1910						    timeout.number].name);
1911						YYERROR;
1912					}
1913					r.timeout[o->data.timeout.number] =
1914					    o->data.timeout.seconds;
1915				}
1916				o = o->next;
1917				free(p);
1918			}
1919
1920			/* 'flags S/SA' by default on stateful rules */
1921			if (!r.action && !r.flags && !r.flagset &&
1922			    !$9.fragment && !($9.marker & FOM_FLAGS) &&
1923			    r.keep_state) {
1924				r.flags = parse_flags("S");
1925				r.flagset =  parse_flags("SA");
1926			}
1927			if (!adaptive && r.max_states) {
1928				r.timeout[PFTM_ADAPTIVE_START] =
1929				    (r.max_states / 10) * 6;
1930				r.timeout[PFTM_ADAPTIVE_END] =
1931				    (r.max_states / 10) * 12;
1932			}
1933			if (r.rule_flag & PFRULE_SRCTRACK) {
1934				if (srctrack == PF_SRCTRACK_GLOBAL &&
1935				    r.max_src_nodes) {
1936					yyerror("'max-src-nodes' is "
1937					    "incompatible with "
1938					    "'source-track global'");
1939					YYERROR;
1940				}
1941				if (srctrack == PF_SRCTRACK_GLOBAL &&
1942				    r.max_src_conn) {
1943					yyerror("'max-src-conn' is "
1944					    "incompatible with "
1945					    "'source-track global'");
1946					YYERROR;
1947				}
1948				if (srctrack == PF_SRCTRACK_GLOBAL &&
1949				    r.max_src_conn_rate.seconds) {
1950					yyerror("'max-src-conn-rate' is "
1951					    "incompatible with "
1952					    "'source-track global'");
1953					YYERROR;
1954				}
1955				if (r.timeout[PFTM_SRC_NODE] <
1956				    r.max_src_conn_rate.seconds)
1957					r.timeout[PFTM_SRC_NODE] =
1958					    r.max_src_conn_rate.seconds;
1959				r.rule_flag |= PFRULE_SRCTRACK;
1960				if (srctrack == PF_SRCTRACK_RULE)
1961					r.rule_flag |= PFRULE_RULESRCTRACK;
1962			}
1963			if (r.keep_state && !statelock)
1964				r.rule_flag |= default_statelock;
1965
1966			if ($9.fragment)
1967				r.rule_flag |= PFRULE_FRAGMENT;
1968			r.allow_opts = $9.allowopts;
1969
1970			decide_address_family($8.src.host, &r.af);
1971			decide_address_family($8.dst.host, &r.af);
1972
1973			if ($5.rt) {
1974				if (!r.direction) {
1975					yyerror("direction must be explicit "
1976					    "with rules that specify routing");
1977					YYERROR;
1978				}
1979				r.rt = $5.rt;
1980				r.rpool.opts = $5.pool_opts;
1981				if ($5.key != NULL)
1982					memcpy(&r.rpool.key, $5.key,
1983					    sizeof(struct pf_poolhashkey));
1984			}
1985			if (r.rt && r.rt != PF_FASTROUTE) {
1986				decide_address_family($5.host, &r.af);
1987				remove_invalid_hosts(&$5.host, &r.af);
1988				if ($5.host == NULL) {
1989					yyerror("no routing address with "
1990					    "matching address family found.");
1991					YYERROR;
1992				}
1993				if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
1994				    PF_POOL_NONE && ($5.host->next != NULL ||
1995				    $5.host->addr.type == PF_ADDR_TABLE ||
1996				    DYNIF_MULTIADDR($5.host->addr)))
1997					r.rpool.opts |= PF_POOL_ROUNDROBIN;
1998				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
1999				    PF_POOL_ROUNDROBIN &&
2000				    disallow_table($5.host, "tables are only "
2001				    "supported in round-robin routing pools"))
2002					YYERROR;
2003				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2004				    PF_POOL_ROUNDROBIN &&
2005				    disallow_alias($5.host, "interface (%s) "
2006				    "is only supported in round-robin "
2007				    "routing pools"))
2008					YYERROR;
2009				if ($5.host->next != NULL) {
2010					if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2011					    PF_POOL_ROUNDROBIN) {
2012						yyerror("r.rpool.opts must "
2013						    "be PF_POOL_ROUNDROBIN");
2014						YYERROR;
2015					}
2016				}
2017			}
2018			if ($9.queues.qname != NULL) {
2019				if (strlcpy(r.qname, $9.queues.qname,
2020				    sizeof(r.qname)) >= sizeof(r.qname)) {
2021					yyerror("rule qname too long (max "
2022					    "%d chars)", sizeof(r.qname)-1);
2023					YYERROR;
2024				}
2025				free($9.queues.qname);
2026			}
2027			if ($9.queues.pqname != NULL) {
2028				if (strlcpy(r.pqname, $9.queues.pqname,
2029				    sizeof(r.pqname)) >= sizeof(r.pqname)) {
2030					yyerror("rule pqname too long (max "
2031					    "%d chars)", sizeof(r.pqname)-1);
2032					YYERROR;
2033				}
2034				free($9.queues.pqname);
2035			}
2036
2037			expand_rule(&r, $4, $5.host, $7, $8.src_os,
2038			    $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
2039			    $9.uid, $9.gid, $9.icmpspec, "");
2040		}
2041		;
2042
2043filter_opts	:	{
2044				bzero(&filter_opts, sizeof filter_opts);
2045				filter_opts.rtableid = -1;
2046			}
2047		    filter_opts_l
2048			{ $$ = filter_opts; }
2049		| /* empty */	{
2050			bzero(&filter_opts, sizeof filter_opts);
2051			filter_opts.rtableid = -1;
2052			$$ = filter_opts;
2053		}
2054		;
2055
2056filter_opts_l	: filter_opts_l filter_opt
2057		| filter_opt
2058		;
2059
2060filter_opt	: USER uids {
2061			if (filter_opts.uid)
2062				$2->tail->next = filter_opts.uid;
2063			filter_opts.uid = $2;
2064		}
2065		| GROUP gids {
2066			if (filter_opts.gid)
2067				$2->tail->next = filter_opts.gid;
2068			filter_opts.gid = $2;
2069		}
2070		| flags {
2071			if (filter_opts.marker & FOM_FLAGS) {
2072				yyerror("flags cannot be redefined");
2073				YYERROR;
2074			}
2075			filter_opts.marker |= FOM_FLAGS;
2076			filter_opts.flags.b1 |= $1.b1;
2077			filter_opts.flags.b2 |= $1.b2;
2078			filter_opts.flags.w |= $1.w;
2079			filter_opts.flags.w2 |= $1.w2;
2080		}
2081		| icmpspec {
2082			if (filter_opts.marker & FOM_ICMP) {
2083				yyerror("icmp-type cannot be redefined");
2084				YYERROR;
2085			}
2086			filter_opts.marker |= FOM_ICMP;
2087			filter_opts.icmpspec = $1;
2088		}
2089		| tos {
2090			if (filter_opts.marker & FOM_TOS) {
2091				yyerror("tos cannot be redefined");
2092				YYERROR;
2093			}
2094			filter_opts.marker |= FOM_TOS;
2095			filter_opts.tos = $1;
2096		}
2097		| keep {
2098			if (filter_opts.marker & FOM_KEEP) {
2099				yyerror("modulate or keep cannot be redefined");
2100				YYERROR;
2101			}
2102			filter_opts.marker |= FOM_KEEP;
2103			filter_opts.keep.action = $1.action;
2104			filter_opts.keep.options = $1.options;
2105		}
2106		| FRAGMENT {
2107			filter_opts.fragment = 1;
2108		}
2109		| ALLOWOPTS {
2110			filter_opts.allowopts = 1;
2111		}
2112		| label	{
2113			if (filter_opts.label) {
2114				yyerror("label cannot be redefined");
2115				YYERROR;
2116			}
2117			filter_opts.label = $1;
2118		}
2119		| qname	{
2120			if (filter_opts.queues.qname) {
2121				yyerror("queue cannot be redefined");
2122				YYERROR;
2123			}
2124			filter_opts.queues = $1;
2125		}
2126		| TAG string				{
2127			filter_opts.tag = $2;
2128		}
2129		| not TAGGED string			{
2130			filter_opts.match_tag = $3;
2131			filter_opts.match_tag_not = $1;
2132		}
2133		| PROBABILITY STRING			{
2134			char	*e;
2135			double	 p = strtod($2, &e);
2136
2137			if (*e == '%') {
2138				p *= 0.01;
2139				e++;
2140			}
2141			if (*e) {
2142				yyerror("invalid probability: %s", $2);
2143				free($2);
2144				YYERROR;
2145			}
2146			p = floor(p * (UINT_MAX+1.0) + 0.5);
2147			if (p < 1.0 || p >= (UINT_MAX+1.0)) {
2148				yyerror("invalid probability: %s", $2);
2149				free($2);
2150				YYERROR;
2151			}
2152			filter_opts.prob = (u_int32_t)p;
2153			free($2);
2154		}
2155		| RTABLE number				{
2156#ifdef __FreeBSD__
2157			yyerror("rtable id not supported in FreeBSD, yet");
2158			YYERROR;
2159#else
2160			if ($2 > RT_TABLEID_MAX || $2 < 0) {
2161				yyerror("invalid rtable id");
2162				YYERROR;
2163			}
2164			filter_opts.rtableid = $2;
2165#endif
2166		}
2167		;
2168
2169action		: PASS			{ $$.b1 = PF_PASS; $$.b2 = $$.w = 0; }
2170		| BLOCK blockspec	{ $$ = $2; $$.b1 = PF_DROP; }
2171		;
2172
2173blockspec	: /* empty */		{
2174			$$.b2 = blockpolicy;
2175			$$.w = returnicmpdefault;
2176			$$.w2 = returnicmp6default;
2177		}
2178		| DROP			{
2179			$$.b2 = PFRULE_DROP;
2180			$$.w = 0;
2181			$$.w2 = 0;
2182		}
2183		| RETURNRST		{
2184			$$.b2 = PFRULE_RETURNRST;
2185			$$.w = 0;
2186			$$.w2 = 0;
2187		}
2188		| RETURNRST '(' TTL number ')'	{
2189			if ($4 > 255) {
2190				yyerror("illegal ttl value %d", $4);
2191				YYERROR;
2192			}
2193			$$.b2 = PFRULE_RETURNRST;
2194			$$.w = $4;
2195			$$.w2 = 0;
2196		}
2197		| RETURNICMP		{
2198			$$.b2 = PFRULE_RETURNICMP;
2199			$$.w = returnicmpdefault;
2200			$$.w2 = returnicmp6default;
2201		}
2202		| RETURNICMP6		{
2203			$$.b2 = PFRULE_RETURNICMP;
2204			$$.w = returnicmpdefault;
2205			$$.w2 = returnicmp6default;
2206		}
2207		| RETURNICMP '(' STRING ')'	{
2208			$$.b2 = PFRULE_RETURNICMP;
2209			if (!($$.w = parseicmpspec($3, AF_INET))) {
2210				free($3);
2211				YYERROR;
2212			}
2213			free($3);
2214			$$.w2 = returnicmp6default;
2215		}
2216		| RETURNICMP6 '(' STRING ')'	{
2217			$$.b2 = PFRULE_RETURNICMP;
2218			$$.w = returnicmpdefault;
2219			if (!($$.w2 = parseicmpspec($3, AF_INET6))) {
2220				free($3);
2221				YYERROR;
2222			}
2223			free($3);
2224		}
2225		| RETURNICMP '(' STRING comma STRING ')' {
2226			$$.b2 = PFRULE_RETURNICMP;
2227			if (!($$.w = parseicmpspec($3, AF_INET)) ||
2228			    !($$.w2 = parseicmpspec($5, AF_INET6))) {
2229				free($3);
2230				free($5);
2231				YYERROR;
2232			}
2233			free($3);
2234			free($5);
2235		}
2236		| RETURN {
2237			$$.b2 = PFRULE_RETURN;
2238			$$.w = returnicmpdefault;
2239			$$.w2 = returnicmp6default;
2240		}
2241		;
2242
2243dir		: /* empty */			{ $$ = 0; }
2244		| IN				{ $$ = PF_IN; }
2245		| OUT				{ $$ = PF_OUT; }
2246		;
2247
2248quick		: /* empty */			{ $$.quick = 0; }
2249		| QUICK				{ $$.quick = 1; }
2250		;
2251
2252logquick	: /* empty */	{ $$.log = 0; $$.quick = 0; $$.logif = 0; }
2253		| log		{ $$ = $1; $$.quick = 0; }
2254		| QUICK		{ $$.quick = 1; $$.log = 0; $$.logif = 0; }
2255		| log QUICK	{ $$ = $1; $$.quick = 1; }
2256		| QUICK log	{ $$ = $2; $$.quick = 1; }
2257		;
2258
2259log		: LOG			{ $$.log = PF_LOG; $$.logif = 0; }
2260		| LOG '(' logopts ')'	{
2261			$$.log = PF_LOG | $3.log;
2262			$$.logif = $3.logif;
2263		}
2264		;
2265
2266logopts		: logopt			{ $$ = $1; }
2267		| logopts comma logopt		{
2268			$$.log = $1.log | $3.log;
2269			$$.logif = $3.logif;
2270			if ($$.logif == 0)
2271				$$.logif = $1.logif;
2272		}
2273		;
2274
2275logopt		: ALL		{ $$.log = PF_LOG_ALL; $$.logif = 0; }
2276		| USER		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2277		| GROUP		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2278		| TO string	{
2279			const char	*errstr;
2280			u_int		 i;
2281
2282			$$.log = 0;
2283			if (strncmp($2, "pflog", 5)) {
2284				yyerror("%s: should be a pflog interface", $2);
2285				free($2);
2286				YYERROR;
2287			}
2288			i = strtonum($2 + 5, 0, 255, &errstr);
2289			if (errstr) {
2290				yyerror("%s: %s", $2, errstr);
2291				free($2);
2292				YYERROR;
2293			}
2294			free($2);
2295			$$.logif = i;
2296		}
2297		;
2298
2299interface	: /* empty */			{ $$ = NULL; }
2300		| ON if_item_not		{ $$ = $2; }
2301		| ON '{' if_list '}'		{ $$ = $3; }
2302		;
2303
2304if_list		: if_item_not			{ $$ = $1; }
2305		| if_list comma if_item_not	{
2306			$1->tail->next = $3;
2307			$1->tail = $3;
2308			$$ = $1;
2309		}
2310		;
2311
2312if_item_not	: not if_item			{ $$ = $2; $$->not = $1; }
2313		;
2314
2315if_item		: STRING			{
2316			struct node_host	*n;
2317
2318			$$ = calloc(1, sizeof(struct node_if));
2319			if ($$ == NULL)
2320				err(1, "if_item: calloc");
2321			if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2322			    sizeof($$->ifname)) {
2323				free($1);
2324				free($$);
2325				yyerror("interface name too long");
2326				YYERROR;
2327			}
2328
2329			if ((n = ifa_exists($1)) != NULL)
2330				$$->ifa_flags = n->ifa_flags;
2331
2332			free($1);
2333			$$->not = 0;
2334			$$->next = NULL;
2335			$$->tail = $$;
2336		}
2337		;
2338
2339af		: /* empty */			{ $$ = 0; }
2340		| INET				{ $$ = AF_INET; }
2341		| INET6				{ $$ = AF_INET6; }
2342		;
2343
2344proto		: /* empty */			{ $$ = NULL; }
2345		| PROTO proto_item		{ $$ = $2; }
2346		| PROTO '{' proto_list '}'	{ $$ = $3; }
2347		;
2348
2349proto_list	: proto_item			{ $$ = $1; }
2350		| proto_list comma proto_item	{
2351			$1->tail->next = $3;
2352			$1->tail = $3;
2353			$$ = $1;
2354		}
2355		;
2356
2357proto_item	: STRING			{
2358			u_int8_t	pr;
2359			u_long		ulval;
2360
2361			if (atoul($1, &ulval) == 0) {
2362				if (ulval > 255) {
2363					yyerror("protocol outside range");
2364					free($1);
2365					YYERROR;
2366				}
2367				pr = (u_int8_t)ulval;
2368			} else {
2369				struct protoent	*p;
2370
2371				p = getprotobyname($1);
2372				if (p == NULL) {
2373					yyerror("unknown protocol %s", $1);
2374					free($1);
2375					YYERROR;
2376				}
2377				pr = p->p_proto;
2378			}
2379			free($1);
2380			if (pr == 0) {
2381				yyerror("proto 0 cannot be used");
2382				YYERROR;
2383			}
2384			$$ = calloc(1, sizeof(struct node_proto));
2385			if ($$ == NULL)
2386				err(1, "proto_item: calloc");
2387			$$->proto = pr;
2388			$$->next = NULL;
2389			$$->tail = $$;
2390		}
2391		;
2392
2393fromto		: ALL				{
2394			$$.src.host = NULL;
2395			$$.src.port = NULL;
2396			$$.dst.host = NULL;
2397			$$.dst.port = NULL;
2398			$$.src_os = NULL;
2399		}
2400		| from os to			{
2401			$$.src = $1;
2402			$$.src_os = $2;
2403			$$.dst = $3;
2404		}
2405		;
2406
2407os		: /* empty */			{ $$ = NULL; }
2408		| OS xos			{ $$ = $2; }
2409		| OS '{' os_list '}'		{ $$ = $3; }
2410		;
2411
2412xos		: STRING {
2413			$$ = calloc(1, sizeof(struct node_os));
2414			if ($$ == NULL)
2415				err(1, "os: calloc");
2416			$$->os = $1;
2417			$$->tail = $$;
2418		}
2419		;
2420
2421os_list		: xos				{ $$ = $1; }
2422		| os_list comma xos		{
2423			$1->tail->next = $3;
2424			$1->tail = $3;
2425			$$ = $1;
2426		}
2427		;
2428
2429from		: /* empty */			{
2430			$$.host = NULL;
2431			$$.port = NULL;
2432		}
2433		| FROM ipportspec		{
2434			$$ = $2;
2435		}
2436		;
2437
2438to		: /* empty */			{
2439			$$.host = NULL;
2440			$$.port = NULL;
2441		}
2442		| TO ipportspec		{
2443			if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
2444			    "not permitted in a destination address"))
2445				YYERROR;
2446			$$ = $2;
2447		}
2448		;
2449
2450ipportspec	: ipspec			{
2451			$$.host = $1;
2452			$$.port = NULL;
2453		}
2454		| ipspec PORT portspec		{
2455			$$.host = $1;
2456			$$.port = $3;
2457		}
2458		| PORT portspec			{
2459			$$.host = NULL;
2460			$$.port = $2;
2461		}
2462		;
2463
2464ipspec		: ANY				{ $$ = NULL; }
2465		| xhost				{ $$ = $1; }
2466		| '{' host_list '}'		{ $$ = $2; }
2467		;
2468
2469host_list	: ipspec			{ $$ = $1; }
2470		| host_list comma ipspec	{
2471			if ($3 == NULL)
2472				$$ = $1;
2473			else if ($1 == NULL)
2474				$$ = $3;
2475			else {
2476				$1->tail->next = $3;
2477				$1->tail = $3->tail;
2478				$$ = $1;
2479			}
2480		}
2481		;
2482
2483xhost		: not host			{
2484			struct node_host	*n;
2485
2486			for (n = $2; n != NULL; n = n->next)
2487				n->not = $1;
2488			$$ = $2;
2489		}
2490		| not NOROUTE			{
2491			$$ = calloc(1, sizeof(struct node_host));
2492			if ($$ == NULL)
2493				err(1, "xhost: calloc");
2494			$$->addr.type = PF_ADDR_NOROUTE;
2495			$$->next = NULL;
2496			$$->not = $1;
2497			$$->tail = $$;
2498		}
2499		| not URPFFAILED		{
2500			$$ = calloc(1, sizeof(struct node_host));
2501			if ($$ == NULL)
2502				err(1, "xhost: calloc");
2503			$$->addr.type = PF_ADDR_URPFFAILED;
2504			$$->next = NULL;
2505			$$->not = $1;
2506			$$->tail = $$;
2507		}
2508		;
2509
2510host		: STRING			{
2511			if (($$ = host($1)) == NULL)	{
2512				/* error. "any" is handled elsewhere */
2513				free($1);
2514				yyerror("could not parse host specification");
2515				YYERROR;
2516			}
2517			free($1);
2518
2519		}
2520		| STRING '/' number		{
2521			char	*buf;
2522
2523			if (asprintf(&buf, "%s/%u", $1, $3) == -1)
2524				err(1, "host: asprintf");
2525			free($1);
2526			if (($$ = host(buf)) == NULL)	{
2527				/* error. "any" is handled elsewhere */
2528				free(buf);
2529				yyerror("could not parse host specification");
2530				YYERROR;
2531			}
2532			free(buf);
2533		}
2534		| dynaddr
2535		| dynaddr '/' number		{
2536			struct node_host	*n;
2537
2538			$$ = $1;
2539			for (n = $1; n != NULL; n = n->next)
2540				set_ipmask(n, $3);
2541		}
2542		| '<' STRING '>'	{
2543			if (strlen($2) >= PF_TABLE_NAME_SIZE) {
2544				yyerror("table name '%s' too long", $2);
2545				free($2);
2546				YYERROR;
2547			}
2548			$$ = calloc(1, sizeof(struct node_host));
2549			if ($$ == NULL)
2550				err(1, "host: calloc");
2551			$$->addr.type = PF_ADDR_TABLE;
2552			if (strlcpy($$->addr.v.tblname, $2,
2553			    sizeof($$->addr.v.tblname)) >=
2554			    sizeof($$->addr.v.tblname))
2555				errx(1, "host: strlcpy");
2556			free($2);
2557			$$->next = NULL;
2558			$$->tail = $$;
2559		}
2560		| ROUTE	STRING		{
2561			$$ = calloc(1, sizeof(struct node_host));
2562			if ($$ == NULL) {
2563				free($2);
2564				err(1, "host: calloc");
2565			}
2566			$$->addr.type = PF_ADDR_RTLABEL;
2567			if (strlcpy($$->addr.v.rtlabelname, $2,
2568			    sizeof($$->addr.v.rtlabelname)) >=
2569			    sizeof($$->addr.v.rtlabelname)) {
2570				yyerror("route label too long, max %u chars",
2571				    sizeof($$->addr.v.rtlabelname) - 1);
2572				free($2);
2573				free($$);
2574				YYERROR;
2575			}
2576			$$->next = NULL;
2577			$$->tail = $$;
2578			free($2);
2579		}
2580		;
2581
2582number		: STRING			{
2583			u_long	ulval;
2584
2585			if (atoul($1, &ulval) == -1) {
2586				yyerror("%s is not a number", $1);
2587				free($1);
2588				YYERROR;
2589			} else
2590				$$ = ulval;
2591			free($1);
2592		}
2593		;
2594
2595dynaddr		: '(' STRING ')'		{
2596			int	 flags = 0;
2597			char	*p, *op;
2598
2599			op = $2;
2600			if (!isalpha(op[0])) {
2601				yyerror("invalid interface name '%s'", op);
2602				free(op);
2603				YYERROR;
2604			}
2605			while ((p = strrchr($2, ':')) != NULL) {
2606				if (!strcmp(p+1, "network"))
2607					flags |= PFI_AFLAG_NETWORK;
2608				else if (!strcmp(p+1, "broadcast"))
2609					flags |= PFI_AFLAG_BROADCAST;
2610				else if (!strcmp(p+1, "peer"))
2611					flags |= PFI_AFLAG_PEER;
2612				else if (!strcmp(p+1, "0"))
2613					flags |= PFI_AFLAG_NOALIAS;
2614				else {
2615					yyerror("interface %s has bad modifier",
2616					    $2);
2617					free(op);
2618					YYERROR;
2619				}
2620				*p = '\0';
2621			}
2622			if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
2623				free(op);
2624				yyerror("illegal combination of "
2625				    "interface modifiers");
2626				YYERROR;
2627			}
2628			$$ = calloc(1, sizeof(struct node_host));
2629			if ($$ == NULL)
2630				err(1, "address: calloc");
2631			$$->af = 0;
2632			set_ipmask($$, 128);
2633			$$->addr.type = PF_ADDR_DYNIFTL;
2634			$$->addr.iflags = flags;
2635			if (strlcpy($$->addr.v.ifname, $2,
2636			    sizeof($$->addr.v.ifname)) >=
2637			    sizeof($$->addr.v.ifname)) {
2638				free(op);
2639				free($$);
2640				yyerror("interface name too long");
2641				YYERROR;
2642			}
2643			free(op);
2644			$$->next = NULL;
2645			$$->tail = $$;
2646		}
2647		;
2648
2649portspec	: port_item			{ $$ = $1; }
2650		| '{' port_list '}'		{ $$ = $2; }
2651		;
2652
2653port_list	: port_item			{ $$ = $1; }
2654		| port_list comma port_item	{
2655			$1->tail->next = $3;
2656			$1->tail = $3;
2657			$$ = $1;
2658		}
2659		;
2660
2661port_item	: port				{
2662			$$ = calloc(1, sizeof(struct node_port));
2663			if ($$ == NULL)
2664				err(1, "port_item: calloc");
2665			$$->port[0] = $1.a;
2666			$$->port[1] = $1.b;
2667			if ($1.t)
2668				$$->op = PF_OP_RRG;
2669			else
2670				$$->op = PF_OP_EQ;
2671			$$->next = NULL;
2672			$$->tail = $$;
2673		}
2674		| unaryop port		{
2675			if ($2.t) {
2676				yyerror("':' cannot be used with an other "
2677				    "port operator");
2678				YYERROR;
2679			}
2680			$$ = calloc(1, sizeof(struct node_port));
2681			if ($$ == NULL)
2682				err(1, "port_item: calloc");
2683			$$->port[0] = $2.a;
2684			$$->port[1] = $2.b;
2685			$$->op = $1;
2686			$$->next = NULL;
2687			$$->tail = $$;
2688		}
2689		| port PORTBINARY port		{
2690			if ($1.t || $3.t) {
2691				yyerror("':' cannot be used with an other "
2692				    "port operator");
2693				YYERROR;
2694			}
2695			$$ = calloc(1, sizeof(struct node_port));
2696			if ($$ == NULL)
2697				err(1, "port_item: calloc");
2698			$$->port[0] = $1.a;
2699			$$->port[1] = $3.a;
2700			$$->op = $2;
2701			$$->next = NULL;
2702			$$->tail = $$;
2703		}
2704		;
2705
2706port		: STRING			{
2707			char	*p = strchr($1, ':');
2708
2709			if (p == NULL) {
2710				if (($$.a = getservice($1)) == -1) {
2711					free($1);
2712					YYERROR;
2713				}
2714				$$.b = $$.t = 0;
2715			} else {
2716				int port[2];
2717
2718				*p++ = 0;
2719				if ((port[0] = getservice($1)) == -1 ||
2720				    (port[1] = getservice(p)) == -1) {
2721					free($1);
2722					YYERROR;
2723				}
2724				$$.a = port[0];
2725				$$.b = port[1];
2726				$$.t = PF_OP_RRG;
2727			}
2728			free($1);
2729		}
2730		;
2731
2732uids		: uid_item			{ $$ = $1; }
2733		| '{' uid_list '}'		{ $$ = $2; }
2734		;
2735
2736uid_list	: uid_item			{ $$ = $1; }
2737		| uid_list comma uid_item	{
2738			$1->tail->next = $3;
2739			$1->tail = $3;
2740			$$ = $1;
2741		}
2742		;
2743
2744uid_item	: uid				{
2745			$$ = calloc(1, sizeof(struct node_uid));
2746			if ($$ == NULL)
2747				err(1, "uid_item: calloc");
2748			$$->uid[0] = $1;
2749			$$->uid[1] = $1;
2750			$$->op = PF_OP_EQ;
2751			$$->next = NULL;
2752			$$->tail = $$;
2753		}
2754		| unaryop uid			{
2755			if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
2756				yyerror("user unknown requires operator = or "
2757				    "!=");
2758				YYERROR;
2759			}
2760			$$ = calloc(1, sizeof(struct node_uid));
2761			if ($$ == NULL)
2762				err(1, "uid_item: calloc");
2763			$$->uid[0] = $2;
2764			$$->uid[1] = $2;
2765			$$->op = $1;
2766			$$->next = NULL;
2767			$$->tail = $$;
2768		}
2769		| uid PORTBINARY uid		{
2770			if ($1 == UID_MAX || $3 == UID_MAX) {
2771				yyerror("user unknown requires operator = or "
2772				    "!=");
2773				YYERROR;
2774			}
2775			$$ = calloc(1, sizeof(struct node_uid));
2776			if ($$ == NULL)
2777				err(1, "uid_item: calloc");
2778			$$->uid[0] = $1;
2779			$$->uid[1] = $3;
2780			$$->op = $2;
2781			$$->next = NULL;
2782			$$->tail = $$;
2783		}
2784		;
2785
2786uid		: STRING			{
2787			u_long	ulval;
2788
2789			if (atoul($1, &ulval) == -1) {
2790				if (!strcmp($1, "unknown"))
2791					$$ = UID_MAX;
2792				else {
2793					struct passwd	*pw;
2794
2795					if ((pw = getpwnam($1)) == NULL) {
2796						yyerror("unknown user %s", $1);
2797						free($1);
2798						YYERROR;
2799					}
2800					$$ = pw->pw_uid;
2801				}
2802			} else {
2803				if (ulval >= UID_MAX) {
2804					free($1);
2805					yyerror("illegal uid value %lu", ulval);
2806					YYERROR;
2807				}
2808				$$ = ulval;
2809			}
2810			free($1);
2811		}
2812		;
2813
2814gids		: gid_item			{ $$ = $1; }
2815		| '{' gid_list '}'		{ $$ = $2; }
2816		;
2817
2818gid_list	: gid_item			{ $$ = $1; }
2819		| gid_list comma gid_item	{
2820			$1->tail->next = $3;
2821			$1->tail = $3;
2822			$$ = $1;
2823		}
2824		;
2825
2826gid_item	: gid				{
2827			$$ = calloc(1, sizeof(struct node_gid));
2828			if ($$ == NULL)
2829				err(1, "gid_item: calloc");
2830			$$->gid[0] = $1;
2831			$$->gid[1] = $1;
2832			$$->op = PF_OP_EQ;
2833			$$->next = NULL;
2834			$$->tail = $$;
2835		}
2836		| unaryop gid			{
2837			if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
2838				yyerror("group unknown requires operator = or "
2839				    "!=");
2840				YYERROR;
2841			}
2842			$$ = calloc(1, sizeof(struct node_gid));
2843			if ($$ == NULL)
2844				err(1, "gid_item: calloc");
2845			$$->gid[0] = $2;
2846			$$->gid[1] = $2;
2847			$$->op = $1;
2848			$$->next = NULL;
2849			$$->tail = $$;
2850		}
2851		| gid PORTBINARY gid		{
2852			if ($1 == GID_MAX || $3 == GID_MAX) {
2853				yyerror("group unknown requires operator = or "
2854				    "!=");
2855				YYERROR;
2856			}
2857			$$ = calloc(1, sizeof(struct node_gid));
2858			if ($$ == NULL)
2859				err(1, "gid_item: calloc");
2860			$$->gid[0] = $1;
2861			$$->gid[1] = $3;
2862			$$->op = $2;
2863			$$->next = NULL;
2864			$$->tail = $$;
2865		}
2866		;
2867
2868gid		: STRING			{
2869			u_long	ulval;
2870
2871			if (atoul($1, &ulval) == -1) {
2872				if (!strcmp($1, "unknown"))
2873					$$ = GID_MAX;
2874				else {
2875					struct group	*grp;
2876
2877					if ((grp = getgrnam($1)) == NULL) {
2878						yyerror("unknown group %s", $1);
2879						free($1);
2880						YYERROR;
2881					}
2882					$$ = grp->gr_gid;
2883				}
2884			} else {
2885				if (ulval >= GID_MAX) {
2886					yyerror("illegal gid value %lu", ulval);
2887					free($1);
2888					YYERROR;
2889				}
2890				$$ = ulval;
2891			}
2892			free($1);
2893		}
2894		;
2895
2896flag		: STRING			{
2897			int	f;
2898
2899			if ((f = parse_flags($1)) < 0) {
2900				yyerror("bad flags %s", $1);
2901				free($1);
2902				YYERROR;
2903			}
2904			free($1);
2905			$$.b1 = f;
2906		}
2907		;
2908
2909flags		: FLAGS flag '/' flag	{ $$.b1 = $2.b1; $$.b2 = $4.b1; }
2910		| FLAGS '/' flag	{ $$.b1 = 0; $$.b2 = $3.b1; }
2911		| FLAGS ANY		{ $$.b1 = 0; $$.b2 = 0; }
2912		;
2913
2914icmpspec	: ICMPTYPE icmp_item		{ $$ = $2; }
2915		| ICMPTYPE '{' icmp_list '}'	{ $$ = $3; }
2916		| ICMP6TYPE icmp6_item		{ $$ = $2; }
2917		| ICMP6TYPE '{' icmp6_list '}'	{ $$ = $3; }
2918		;
2919
2920icmp_list	: icmp_item			{ $$ = $1; }
2921		| icmp_list comma icmp_item	{
2922			$1->tail->next = $3;
2923			$1->tail = $3;
2924			$$ = $1;
2925		}
2926		;
2927
2928icmp6_list	: icmp6_item			{ $$ = $1; }
2929		| icmp6_list comma icmp6_item	{
2930			$1->tail->next = $3;
2931			$1->tail = $3;
2932			$$ = $1;
2933		}
2934		;
2935
2936icmp_item	: icmptype		{
2937			$$ = calloc(1, sizeof(struct node_icmp));
2938			if ($$ == NULL)
2939				err(1, "icmp_item: calloc");
2940			$$->type = $1;
2941			$$->code = 0;
2942			$$->proto = IPPROTO_ICMP;
2943			$$->next = NULL;
2944			$$->tail = $$;
2945		}
2946		| icmptype CODE STRING	{
2947			const struct icmpcodeent	*p;
2948			u_long				 ulval;
2949
2950			if (atoul($3, &ulval) == 0) {
2951				if (ulval > 255) {
2952					free($3);
2953					yyerror("illegal icmp-code %lu", ulval);
2954					YYERROR;
2955				}
2956			} else {
2957				if ((p = geticmpcodebyname($1-1, $3,
2958				    AF_INET)) == NULL) {
2959					yyerror("unknown icmp-code %s", $3);
2960					free($3);
2961					YYERROR;
2962				}
2963				ulval = p->code;
2964			}
2965			free($3);
2966			$$ = calloc(1, sizeof(struct node_icmp));
2967			if ($$ == NULL)
2968				err(1, "icmp_item: calloc");
2969			$$->type = $1;
2970			$$->code = ulval + 1;
2971			$$->proto = IPPROTO_ICMP;
2972			$$->next = NULL;
2973			$$->tail = $$;
2974		}
2975		;
2976
2977icmp6_item	: icmp6type		{
2978			$$ = calloc(1, sizeof(struct node_icmp));
2979			if ($$ == NULL)
2980				err(1, "icmp_item: calloc");
2981			$$->type = $1;
2982			$$->code = 0;
2983			$$->proto = IPPROTO_ICMPV6;
2984			$$->next = NULL;
2985			$$->tail = $$;
2986		}
2987		| icmp6type CODE STRING	{
2988			const struct icmpcodeent	*p;
2989			u_long				 ulval;
2990
2991			if (atoul($3, &ulval) == 0) {
2992				if (ulval > 255) {
2993					yyerror("illegal icmp6-code %lu",
2994					    ulval);
2995					free($3);
2996					YYERROR;
2997				}
2998			} else {
2999				if ((p = geticmpcodebyname($1-1, $3,
3000				    AF_INET6)) == NULL) {
3001					yyerror("unknown icmp6-code %s", $3);
3002					free($3);
3003					YYERROR;
3004				}
3005				ulval = p->code;
3006			}
3007			free($3);
3008			$$ = calloc(1, sizeof(struct node_icmp));
3009			if ($$ == NULL)
3010				err(1, "icmp_item: calloc");
3011			$$->type = $1;
3012			$$->code = ulval + 1;
3013			$$->proto = IPPROTO_ICMPV6;
3014			$$->next = NULL;
3015			$$->tail = $$;
3016		}
3017		;
3018
3019icmptype	: STRING			{
3020			const struct icmptypeent	*p;
3021			u_long				 ulval;
3022
3023			if (atoul($1, &ulval) == 0) {
3024				if (ulval > 255) {
3025					yyerror("illegal icmp-type %lu", ulval);
3026					free($1);
3027					YYERROR;
3028				}
3029				$$ = ulval + 1;
3030			} else {
3031				if ((p = geticmptypebyname($1, AF_INET)) ==
3032				    NULL) {
3033					yyerror("unknown icmp-type %s", $1);
3034					free($1);
3035					YYERROR;
3036				}
3037				$$ = p->type + 1;
3038			}
3039			free($1);
3040		}
3041		;
3042
3043icmp6type	: STRING			{
3044			const struct icmptypeent	*p;
3045			u_long				 ulval;
3046
3047			if (atoul($1, &ulval) == 0) {
3048				if (ulval > 255) {
3049					yyerror("illegal icmp6-type %lu",
3050					    ulval);
3051					free($1);
3052					YYERROR;
3053				}
3054				$$ = ulval + 1;
3055			} else {
3056				if ((p = geticmptypebyname($1, AF_INET6)) ==
3057				    NULL) {
3058					yyerror("unknown icmp6-type %s", $1);
3059					free($1);
3060					YYERROR;
3061				}
3062				$$ = p->type + 1;
3063			}
3064			free($1);
3065		}
3066		;
3067
3068tos		: TOS STRING			{
3069			if (!strcmp($2, "lowdelay"))
3070				$$ = IPTOS_LOWDELAY;
3071			else if (!strcmp($2, "throughput"))
3072				$$ = IPTOS_THROUGHPUT;
3073			else if (!strcmp($2, "reliability"))
3074				$$ = IPTOS_RELIABILITY;
3075			else if ($2[0] == '0' && $2[1] == 'x')
3076				$$ = strtoul($2, NULL, 16);
3077			else
3078				$$ = strtoul($2, NULL, 10);
3079			if (!$$ || $$ > 255) {
3080				yyerror("illegal tos value %s", $2);
3081				free($2);
3082				YYERROR;
3083			}
3084			free($2);
3085		}
3086		;
3087
3088sourcetrack	: SOURCETRACK		{ $$ = PF_SRCTRACK; }
3089		| SOURCETRACK GLOBAL	{ $$ = PF_SRCTRACK_GLOBAL; }
3090		| SOURCETRACK RULE	{ $$ = PF_SRCTRACK_RULE; }
3091		;
3092
3093statelock	: IFBOUND {
3094			$$ = PFRULE_IFBOUND;
3095		}
3096		| FLOATING {
3097			$$ = 0;
3098		}
3099		;
3100
3101keep		: NO STATE			{
3102			$$.action = 0;
3103			$$.options = NULL;
3104		}
3105		| KEEP STATE state_opt_spec	{
3106			$$.action = PF_STATE_NORMAL;
3107			$$.options = $3;
3108		}
3109		| MODULATE STATE state_opt_spec {
3110			$$.action = PF_STATE_MODULATE;
3111			$$.options = $3;
3112		}
3113		| SYNPROXY STATE state_opt_spec {
3114			$$.action = PF_STATE_SYNPROXY;
3115			$$.options = $3;
3116		}
3117		;
3118
3119flush		: /* empty */			{ $$ = 0; }
3120		| FLUSH				{ $$ = PF_FLUSH; }
3121		| FLUSH GLOBAL			{
3122			$$ = PF_FLUSH | PF_FLUSH_GLOBAL;
3123		}
3124		;
3125
3126state_opt_spec	: '(' state_opt_list ')'	{ $$ = $2; }
3127		| /* empty */			{ $$ = NULL; }
3128		;
3129
3130state_opt_list	: state_opt_item		{ $$ = $1; }
3131		| state_opt_list comma state_opt_item {
3132			$1->tail->next = $3;
3133			$1->tail = $3;
3134			$$ = $1;
3135		}
3136		;
3137
3138state_opt_item	: MAXIMUM number		{
3139			$$ = calloc(1, sizeof(struct node_state_opt));
3140			if ($$ == NULL)
3141				err(1, "state_opt_item: calloc");
3142			$$->type = PF_STATE_OPT_MAX;
3143			$$->data.max_states = $2;
3144			$$->next = NULL;
3145			$$->tail = $$;
3146		}
3147		| NOSYNC				{
3148			$$ = calloc(1, sizeof(struct node_state_opt));
3149			if ($$ == NULL)
3150				err(1, "state_opt_item: calloc");
3151			$$->type = PF_STATE_OPT_NOSYNC;
3152			$$->next = NULL;
3153			$$->tail = $$;
3154		}
3155		| MAXSRCSTATES number			{
3156			$$ = calloc(1, sizeof(struct node_state_opt));
3157			if ($$ == NULL)
3158				err(1, "state_opt_item: calloc");
3159			$$->type = PF_STATE_OPT_MAX_SRC_STATES;
3160			$$->data.max_src_states = $2;
3161			$$->next = NULL;
3162			$$->tail = $$;
3163		}
3164		| MAXSRCCONN number			{
3165			$$ = calloc(1, sizeof(struct node_state_opt));
3166			if ($$ == NULL)
3167				err(1, "state_opt_item: calloc");
3168			$$->type = PF_STATE_OPT_MAX_SRC_CONN;
3169			$$->data.max_src_conn = $2;
3170			$$->next = NULL;
3171			$$->tail = $$;
3172		}
3173		| MAXSRCCONNRATE number '/' number	{
3174			$$ = calloc(1, sizeof(struct node_state_opt));
3175			if ($$ == NULL)
3176				err(1, "state_opt_item: calloc");
3177			$$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
3178			$$->data.max_src_conn_rate.limit = $2;
3179			$$->data.max_src_conn_rate.seconds = $4;
3180			$$->next = NULL;
3181			$$->tail = $$;
3182		}
3183		| OVERLOAD '<' STRING '>' flush		{
3184			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
3185				yyerror("table name '%s' too long", $3);
3186				free($3);
3187				YYERROR;
3188			}
3189			$$ = calloc(1, sizeof(struct node_state_opt));
3190			if ($$ == NULL)
3191				err(1, "state_opt_item: calloc");
3192			if (strlcpy($$->data.overload.tblname, $3,
3193			    PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
3194				errx(1, "state_opt_item: strlcpy");
3195			free($3);
3196			$$->type = PF_STATE_OPT_OVERLOAD;
3197			$$->data.overload.flush = $5;
3198			$$->next = NULL;
3199			$$->tail = $$;
3200		}
3201		| MAXSRCNODES number			{
3202			$$ = calloc(1, sizeof(struct node_state_opt));
3203			if ($$ == NULL)
3204				err(1, "state_opt_item: calloc");
3205			$$->type = PF_STATE_OPT_MAX_SRC_NODES;
3206			$$->data.max_src_nodes = $2;
3207			$$->next = NULL;
3208			$$->tail = $$;
3209		}
3210		| sourcetrack {
3211			$$ = calloc(1, sizeof(struct node_state_opt));
3212			if ($$ == NULL)
3213				err(1, "state_opt_item: calloc");
3214			$$->type = PF_STATE_OPT_SRCTRACK;
3215			$$->data.src_track = $1;
3216			$$->next = NULL;
3217			$$->tail = $$;
3218		}
3219		| statelock {
3220			$$ = calloc(1, sizeof(struct node_state_opt));
3221			if ($$ == NULL)
3222				err(1, "state_opt_item: calloc");
3223			$$->type = PF_STATE_OPT_STATELOCK;
3224			$$->data.statelock = $1;
3225			$$->next = NULL;
3226			$$->tail = $$;
3227		}
3228		| STRING number			{
3229			int	i;
3230
3231			for (i = 0; pf_timeouts[i].name &&
3232			    strcmp(pf_timeouts[i].name, $1); ++i)
3233				;	/* nothing */
3234			if (!pf_timeouts[i].name) {
3235				yyerror("illegal timeout name %s", $1);
3236				free($1);
3237				YYERROR;
3238			}
3239			if (strchr(pf_timeouts[i].name, '.') == NULL) {
3240				yyerror("illegal state timeout %s", $1);
3241				free($1);
3242				YYERROR;
3243			}
3244			free($1);
3245			$$ = calloc(1, sizeof(struct node_state_opt));
3246			if ($$ == NULL)
3247				err(1, "state_opt_item: calloc");
3248			$$->type = PF_STATE_OPT_TIMEOUT;
3249			$$->data.timeout.number = pf_timeouts[i].timeout;
3250			$$->data.timeout.seconds = $2;
3251			$$->next = NULL;
3252			$$->tail = $$;
3253		}
3254		;
3255
3256label		: LABEL STRING			{
3257			$$ = $2;
3258		}
3259		;
3260
3261qname		: QUEUE STRING				{
3262			$$.qname = $2;
3263		}
3264		| QUEUE '(' STRING ')'			{
3265			$$.qname = $3;
3266		}
3267		| QUEUE '(' STRING comma STRING ')'	{
3268			$$.qname = $3;
3269			$$.pqname = $5;
3270		}
3271		;
3272
3273no		: /* empty */			{ $$ = 0; }
3274		| NO				{ $$ = 1; }
3275		;
3276
3277rport		: STRING			{
3278			char	*p = strchr($1, ':');
3279
3280			if (p == NULL) {
3281				if (($$.a = getservice($1)) == -1) {
3282					free($1);
3283					YYERROR;
3284				}
3285				$$.b = $$.t = 0;
3286			} else if (!strcmp(p+1, "*")) {
3287				*p = 0;
3288				if (($$.a = getservice($1)) == -1) {
3289					free($1);
3290					YYERROR;
3291				}
3292				$$.b = 0;
3293				$$.t = 1;
3294			} else {
3295				*p++ = 0;
3296				if (($$.a = getservice($1)) == -1 ||
3297				    ($$.b = getservice(p)) == -1) {
3298					free($1);
3299					YYERROR;
3300				}
3301				if ($$.a == $$.b)
3302					$$.b = 0;
3303				$$.t = 0;
3304			}
3305			free($1);
3306		}
3307		;
3308
3309redirspec	: host				{ $$ = $1; }
3310		| '{' redir_host_list '}'	{ $$ = $2; }
3311		;
3312
3313redir_host_list	: host				{ $$ = $1; }
3314		| redir_host_list comma host	{
3315			$1->tail->next = $3;
3316			$1->tail = $3->tail;
3317			$$ = $1;
3318		}
3319		;
3320
3321redirpool	: /* empty */			{ $$ = NULL; }
3322		| ARROW redirspec		{
3323			$$ = calloc(1, sizeof(struct redirection));
3324			if ($$ == NULL)
3325				err(1, "redirection: calloc");
3326			$$->host = $2;
3327			$$->rport.a = $$->rport.b = $$->rport.t = 0;
3328		}
3329		| ARROW redirspec PORT rport	{
3330			$$ = calloc(1, sizeof(struct redirection));
3331			if ($$ == NULL)
3332				err(1, "redirection: calloc");
3333			$$->host = $2;
3334			$$->rport = $4;
3335		}
3336		;
3337
3338hashkey		: /* empty */
3339		{
3340			$$ = calloc(1, sizeof(struct pf_poolhashkey));
3341			if ($$ == NULL)
3342				err(1, "hashkey: calloc");
3343			$$->key32[0] = arc4random();
3344			$$->key32[1] = arc4random();
3345			$$->key32[2] = arc4random();
3346			$$->key32[3] = arc4random();
3347		}
3348		| string
3349		{
3350			if (!strncmp($1, "0x", 2)) {
3351				if (strlen($1) != 34) {
3352					free($1);
3353					yyerror("hex key must be 128 bits "
3354						"(32 hex digits) long");
3355					YYERROR;
3356				}
3357				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3358				if ($$ == NULL)
3359					err(1, "hashkey: calloc");
3360
3361				if (sscanf($1, "0x%8x%8x%8x%8x",
3362				    &$$->key32[0], &$$->key32[1],
3363				    &$$->key32[2], &$$->key32[3]) != 4) {
3364					free($$);
3365					free($1);
3366					yyerror("invalid hex key");
3367					YYERROR;
3368				}
3369			} else {
3370				MD5_CTX	context;
3371
3372				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3373				if ($$ == NULL)
3374					err(1, "hashkey: calloc");
3375				MD5Init(&context);
3376				MD5Update(&context, (unsigned char *)$1,
3377				    strlen($1));
3378				MD5Final((unsigned char *)$$, &context);
3379				HTONL($$->key32[0]);
3380				HTONL($$->key32[1]);
3381				HTONL($$->key32[2]);
3382				HTONL($$->key32[3]);
3383			}
3384			free($1);
3385		}
3386		;
3387
3388pool_opts	:	{ bzero(&pool_opts, sizeof pool_opts); }
3389		    pool_opts_l
3390			{ $$ = pool_opts; }
3391		| /* empty */	{
3392			bzero(&pool_opts, sizeof pool_opts);
3393			$$ = pool_opts;
3394		}
3395		;
3396
3397pool_opts_l	: pool_opts_l pool_opt
3398		| pool_opt
3399		;
3400
3401pool_opt	: BITMASK	{
3402			if (pool_opts.type) {
3403				yyerror("pool type cannot be redefined");
3404				YYERROR;
3405			}
3406			pool_opts.type =  PF_POOL_BITMASK;
3407		}
3408		| RANDOM	{
3409			if (pool_opts.type) {
3410				yyerror("pool type cannot be redefined");
3411				YYERROR;
3412			}
3413			pool_opts.type = PF_POOL_RANDOM;
3414		}
3415		| SOURCEHASH hashkey {
3416			if (pool_opts.type) {
3417				yyerror("pool type cannot be redefined");
3418				YYERROR;
3419			}
3420			pool_opts.type = PF_POOL_SRCHASH;
3421			pool_opts.key = $2;
3422		}
3423		| ROUNDROBIN	{
3424			if (pool_opts.type) {
3425				yyerror("pool type cannot be redefined");
3426				YYERROR;
3427			}
3428			pool_opts.type = PF_POOL_ROUNDROBIN;
3429		}
3430		| STATICPORT	{
3431			if (pool_opts.staticport) {
3432				yyerror("static-port cannot be redefined");
3433				YYERROR;
3434			}
3435			pool_opts.staticport = 1;
3436		}
3437		| STICKYADDRESS	{
3438			if (filter_opts.marker & POM_STICKYADDRESS) {
3439				yyerror("sticky-address cannot be redefined");
3440				YYERROR;
3441			}
3442			pool_opts.marker |= POM_STICKYADDRESS;
3443			pool_opts.opts |= PF_POOL_STICKYADDR;
3444		}
3445		;
3446
3447redirection	: /* empty */			{ $$ = NULL; }
3448		| ARROW host			{
3449			$$ = calloc(1, sizeof(struct redirection));
3450			if ($$ == NULL)
3451				err(1, "redirection: calloc");
3452			$$->host = $2;
3453			$$->rport.a = $$->rport.b = $$->rport.t = 0;
3454		}
3455		| ARROW host PORT rport	{
3456			$$ = calloc(1, sizeof(struct redirection));
3457			if ($$ == NULL)
3458				err(1, "redirection: calloc");
3459			$$->host = $2;
3460			$$->rport = $4;
3461		}
3462		;
3463
3464/* ifdef __FreeBSD__ */
3465natpass		: /* empty */	{ $$.b1 = $$.b2 = 0; $$.w2 = 0; }
3466		| PASS		{ $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; }
3467/* else
3468natpass		:  empty 	{ $$.b1 = $$.b2 = 0; }
3469		| PASS		{ $$.b1 = 1; $$.b2 = 0; }
3470 * endif */
3471		| PASS log	{ $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; }
3472		;
3473
3474nataction	: no NAT natpass {
3475			if ($1 && $3.b1) {
3476				yyerror("\"pass\" not valid with \"no\"");
3477				YYERROR;
3478			}
3479			if ($1)
3480				$$.b1 = PF_NONAT;
3481			else
3482				$$.b1 = PF_NAT;
3483			$$.b2 = $3.b1;
3484			$$.w = $3.b2;
3485			$$.w2 = $3.w2;
3486		}
3487		| no RDR natpass {
3488			if ($1 && $3.b1) {
3489				yyerror("\"pass\" not valid with \"no\"");
3490				YYERROR;
3491			}
3492			if ($1)
3493				$$.b1 = PF_NORDR;
3494			else
3495				$$.b1 = PF_RDR;
3496			$$.b2 = $3.b1;
3497			$$.w = $3.b2;
3498			$$.w2 = $3.w2;
3499		}
3500		;
3501
3502natrule		: nataction interface af proto fromto tag tagged rtable
3503		    redirpool pool_opts
3504		{
3505			struct pf_rule	r;
3506
3507			if (check_rulestate(PFCTL_STATE_NAT))
3508				YYERROR;
3509
3510			memset(&r, 0, sizeof(r));
3511
3512			r.action = $1.b1;
3513			r.natpass = $1.b2;
3514			r.log = $1.w;
3515			r.logif = $1.w2;
3516			r.af = $3;
3517
3518			if (!r.af) {
3519				if ($5.src.host && $5.src.host->af &&
3520				    !$5.src.host->ifindex)
3521					r.af = $5.src.host->af;
3522				else if ($5.dst.host && $5.dst.host->af &&
3523				    !$5.dst.host->ifindex)
3524					r.af = $5.dst.host->af;
3525			}
3526
3527			if ($6 != NULL)
3528				if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >=
3529				    PF_TAG_NAME_SIZE) {
3530					yyerror("tag too long, max %u chars",
3531					    PF_TAG_NAME_SIZE - 1);
3532					YYERROR;
3533				}
3534
3535			if ($7.name)
3536				if (strlcpy(r.match_tagname, $7.name,
3537				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
3538					yyerror("tag too long, max %u chars",
3539					    PF_TAG_NAME_SIZE - 1);
3540					YYERROR;
3541				}
3542			r.match_tag_not = $7.neg;
3543			r.rtableid = $8;
3544
3545			if (r.action == PF_NONAT || r.action == PF_NORDR) {
3546				if ($9 != NULL) {
3547					yyerror("translation rule with 'no' "
3548					    "does not need '->'");
3549					YYERROR;
3550				}
3551			} else {
3552				if ($9 == NULL || $9->host == NULL) {
3553					yyerror("translation rule requires '-> "
3554					    "address'");
3555					YYERROR;
3556				}
3557				if (!r.af && ! $9->host->ifindex)
3558					r.af = $9->host->af;
3559
3560				remove_invalid_hosts(&$9->host, &r.af);
3561				if (invalid_redirect($9->host, r.af))
3562					YYERROR;
3563				if (check_netmask($9->host, r.af))
3564					YYERROR;
3565
3566				r.rpool.proxy_port[0] = ntohs($9->rport.a);
3567
3568				switch (r.action) {
3569				case PF_RDR:
3570					if (!$9->rport.b && $9->rport.t &&
3571					    $5.dst.port != NULL) {
3572						r.rpool.proxy_port[1] =
3573						    ntohs($9->rport.a) +
3574						    (ntohs(
3575						    $5.dst.port->port[1]) -
3576						    ntohs(
3577						    $5.dst.port->port[0]));
3578					} else
3579						r.rpool.proxy_port[1] =
3580						    ntohs($9->rport.b);
3581					break;
3582				case PF_NAT:
3583					r.rpool.proxy_port[1] =
3584					    ntohs($9->rport.b);
3585					if (!r.rpool.proxy_port[0] &&
3586					    !r.rpool.proxy_port[1]) {
3587						r.rpool.proxy_port[0] =
3588						    PF_NAT_PROXY_PORT_LOW;
3589						r.rpool.proxy_port[1] =
3590						    PF_NAT_PROXY_PORT_HIGH;
3591					} else if (!r.rpool.proxy_port[1])
3592						r.rpool.proxy_port[1] =
3593						    r.rpool.proxy_port[0];
3594					break;
3595				default:
3596					break;
3597				}
3598
3599				r.rpool.opts = $10.type;
3600				if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
3601				    PF_POOL_NONE && ($9->host->next != NULL ||
3602				    $9->host->addr.type == PF_ADDR_TABLE ||
3603				    DYNIF_MULTIADDR($9->host->addr)))
3604					r.rpool.opts = PF_POOL_ROUNDROBIN;
3605				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
3606				    PF_POOL_ROUNDROBIN &&
3607				    disallow_table($9->host, "tables are only "
3608				    "supported in round-robin redirection "
3609				    "pools"))
3610					YYERROR;
3611				if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
3612				    PF_POOL_ROUNDROBIN &&
3613				    disallow_alias($9->host, "interface (%s) "
3614				    "is only supported in round-robin "
3615				    "redirection pools"))
3616					YYERROR;
3617				if ($9->host->next != NULL) {
3618					if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
3619					    PF_POOL_ROUNDROBIN) {
3620						yyerror("only round-robin "
3621						    "valid for multiple "
3622						    "redirection addresses");
3623						YYERROR;
3624					}
3625				}
3626			}
3627
3628			if ($10.key != NULL)
3629				memcpy(&r.rpool.key, $10.key,
3630				    sizeof(struct pf_poolhashkey));
3631
3632			 if ($10.opts)
3633				r.rpool.opts |= $10.opts;
3634
3635			if ($10.staticport) {
3636				if (r.action != PF_NAT) {
3637					yyerror("the 'static-port' option is "
3638					    "only valid with nat rules");
3639					YYERROR;
3640				}
3641				if (r.rpool.proxy_port[0] !=
3642				    PF_NAT_PROXY_PORT_LOW &&
3643				    r.rpool.proxy_port[1] !=
3644				    PF_NAT_PROXY_PORT_HIGH) {
3645					yyerror("the 'static-port' option can't"
3646					    " be used when specifying a port"
3647					    " range");
3648					YYERROR;
3649				}
3650				r.rpool.proxy_port[0] = 0;
3651				r.rpool.proxy_port[1] = 0;
3652			}
3653
3654			expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4,
3655			    $5.src_os, $5.src.host, $5.src.port, $5.dst.host,
3656			    $5.dst.port, 0, 0, 0, "");
3657			free($9);
3658		}
3659		;
3660
3661binatrule	: no BINAT natpass interface af proto FROM host TO ipspec tag
3662		    tagged rtable redirection
3663		{
3664			struct pf_rule		binat;
3665			struct pf_pooladdr	*pa;
3666
3667			if (check_rulestate(PFCTL_STATE_NAT))
3668				YYERROR;
3669			if (disallow_urpf_failed($10, "\"urpf-failed\" is not "
3670			    "permitted as a binat destination"))
3671				YYERROR;
3672
3673			memset(&binat, 0, sizeof(binat));
3674
3675			if ($1 && $3.b1) {
3676				yyerror("\"pass\" not valid with \"no\"");
3677				YYERROR;
3678			}
3679			if ($1)
3680				binat.action = PF_NOBINAT;
3681			else
3682				binat.action = PF_BINAT;
3683			binat.natpass = $3.b1;
3684			binat.log = $3.b2;
3685			binat.logif = $3.w2;
3686			binat.af = $5;
3687			if (!binat.af && $8 != NULL && $8->af)
3688				binat.af = $8->af;
3689			if (!binat.af && $10 != NULL && $10->af)
3690				binat.af = $10->af;
3691
3692			if (!binat.af && $14 != NULL && $14->host)
3693				binat.af = $14->host->af;
3694			if (!binat.af) {
3695				yyerror("address family (inet/inet6) "
3696				    "undefined");
3697				YYERROR;
3698			}
3699
3700			if ($4 != NULL) {
3701				memcpy(binat.ifname, $4->ifname,
3702				    sizeof(binat.ifname));
3703				binat.ifnot = $4->not;
3704				free($4);
3705			}
3706
3707			if ($11 != NULL)
3708				if (strlcpy(binat.tagname, $11,
3709				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
3710					yyerror("tag too long, max %u chars",
3711					    PF_TAG_NAME_SIZE - 1);
3712					YYERROR;
3713				}
3714			if ($12.name)
3715				if (strlcpy(binat.match_tagname, $12.name,
3716				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
3717					yyerror("tag too long, max %u chars",
3718					    PF_TAG_NAME_SIZE - 1);
3719					YYERROR;
3720				}
3721			binat.match_tag_not = $12.neg;
3722			binat.rtableid = $13;
3723
3724			if ($6 != NULL) {
3725				binat.proto = $6->proto;
3726				free($6);
3727			}
3728
3729			if ($8 != NULL && disallow_table($8, "invalid use of "
3730			    "table <%s> as the source address of a binat rule"))
3731				YYERROR;
3732			if ($8 != NULL && disallow_alias($8, "invalid use of "
3733			    "interface (%s) as the source address of a binat "
3734			    "rule"))
3735				YYERROR;
3736			if ($14 != NULL && $14->host != NULL && disallow_table(
3737			    $14->host, "invalid use of table <%s> as the "
3738			    "redirect address of a binat rule"))
3739				YYERROR;
3740			if ($14 != NULL && $14->host != NULL && disallow_alias(
3741			    $14->host, "invalid use of interface (%s) as the "
3742			    "redirect address of a binat rule"))
3743				YYERROR;
3744
3745			if ($8 != NULL) {
3746				if ($8->next) {
3747					yyerror("multiple binat ip addresses");
3748					YYERROR;
3749				}
3750				if ($8->addr.type == PF_ADDR_DYNIFTL)
3751					$8->af = binat.af;
3752				if ($8->af != binat.af) {
3753					yyerror("binat ip versions must match");
3754					YYERROR;
3755				}
3756				if (check_netmask($8, binat.af))
3757					YYERROR;
3758				memcpy(&binat.src.addr, &$8->addr,
3759				    sizeof(binat.src.addr));
3760				free($8);
3761			}
3762			if ($10 != NULL) {
3763				if ($10->next) {
3764					yyerror("multiple binat ip addresses");
3765					YYERROR;
3766				}
3767				if ($10->af != binat.af && $10->af) {
3768					yyerror("binat ip versions must match");
3769					YYERROR;
3770				}
3771				if (check_netmask($10, binat.af))
3772					YYERROR;
3773				memcpy(&binat.dst.addr, &$10->addr,
3774				    sizeof(binat.dst.addr));
3775				binat.dst.neg = $10->not;
3776				free($10);
3777			}
3778
3779			if (binat.action == PF_NOBINAT) {
3780				if ($14 != NULL) {
3781					yyerror("'no binat' rule does not need"
3782					    " '->'");
3783					YYERROR;
3784				}
3785			} else {
3786				if ($14 == NULL || $14->host == NULL) {
3787					yyerror("'binat' rule requires"
3788					    " '-> address'");
3789					YYERROR;
3790				}
3791
3792				remove_invalid_hosts(&$14->host, &binat.af);
3793				if (invalid_redirect($14->host, binat.af))
3794					YYERROR;
3795				if ($14->host->next != NULL) {
3796					yyerror("binat rule must redirect to "
3797					    "a single address");
3798					YYERROR;
3799				}
3800				if (check_netmask($14->host, binat.af))
3801					YYERROR;
3802
3803				if (!PF_AZERO(&binat.src.addr.v.a.mask,
3804				    binat.af) &&
3805				    !PF_AEQ(&binat.src.addr.v.a.mask,
3806				    &$14->host->addr.v.a.mask, binat.af)) {
3807					yyerror("'binat' source mask and "
3808					    "redirect mask must be the same");
3809					YYERROR;
3810				}
3811
3812				TAILQ_INIT(&binat.rpool.list);
3813				pa = calloc(1, sizeof(struct pf_pooladdr));
3814				if (pa == NULL)
3815					err(1, "binat: calloc");
3816				pa->addr = $14->host->addr;
3817				pa->ifname[0] = 0;
3818				TAILQ_INSERT_TAIL(&binat.rpool.list,
3819				    pa, entries);
3820
3821				free($14);
3822			}
3823
3824			pfctl_add_rule(pf, &binat, "");
3825		}
3826		;
3827
3828tag		: /* empty */		{ $$ = NULL; }
3829		| TAG STRING		{ $$ = $2; }
3830		;
3831
3832tagged		: /* empty */		{ $$.neg = 0; $$.name = NULL; }
3833		| not TAGGED string	{ $$.neg = $1; $$.name = $3; }
3834		;
3835
3836rtable		: /* empty */		{ $$ = -1; }
3837		| RTABLE number		{
3838#ifdef __FreeBSD__
3839			yyerror("rtable id not supported in FreeBSD, yet");
3840			YYERROR;
3841#else
3842			if ($2 > RT_TABLEID_MAX || $2 < 0) {
3843				yyerror("invalid rtable id");
3844				YYERROR;
3845			}
3846			$$ = $2;
3847#endif
3848		}
3849		;
3850
3851route_host	: STRING			{
3852			$$ = calloc(1, sizeof(struct node_host));
3853			if ($$ == NULL)
3854				err(1, "route_host: calloc");
3855			$$->ifname = $1;
3856			set_ipmask($$, 128);
3857			$$->next = NULL;
3858			$$->tail = $$;
3859		}
3860		| '(' STRING host ')'		{
3861			$$ = $3;
3862			$$->ifname = $2;
3863		}
3864		;
3865
3866route_host_list	: route_host				{ $$ = $1; }
3867		| route_host_list comma route_host	{
3868			if ($1->af == 0)
3869				$1->af = $3->af;
3870			if ($1->af != $3->af) {
3871				yyerror("all pool addresses must be in the "
3872				    "same address family");
3873				YYERROR;
3874			}
3875			$1->tail->next = $3;
3876			$1->tail = $3->tail;
3877			$$ = $1;
3878		}
3879		;
3880
3881routespec	: route_host			{ $$ = $1; }
3882		| '{' route_host_list '}'	{ $$ = $2; }
3883		;
3884
3885route		: /* empty */			{
3886			$$.host = NULL;
3887			$$.rt = 0;
3888			$$.pool_opts = 0;
3889		}
3890		| FASTROUTE {
3891			$$.host = NULL;
3892			$$.rt = PF_FASTROUTE;
3893			$$.pool_opts = 0;
3894		}
3895		| ROUTETO routespec pool_opts {
3896			$$.host = $2;
3897			$$.rt = PF_ROUTETO;
3898			$$.pool_opts = $3.type | $3.opts;
3899			if ($3.key != NULL)
3900				$$.key = $3.key;
3901		}
3902		| REPLYTO routespec pool_opts {
3903			$$.host = $2;
3904			$$.rt = PF_REPLYTO;
3905			$$.pool_opts = $3.type | $3.opts;
3906			if ($3.key != NULL)
3907				$$.key = $3.key;
3908		}
3909		| DUPTO routespec pool_opts {
3910			$$.host = $2;
3911			$$.rt = PF_DUPTO;
3912			$$.pool_opts = $3.type | $3.opts;
3913			if ($3.key != NULL)
3914				$$.key = $3.key;
3915		}
3916		;
3917
3918timeout_spec	: STRING number
3919		{
3920			if (check_rulestate(PFCTL_STATE_OPTION)) {
3921				free($1);
3922				YYERROR;
3923			}
3924			if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
3925				yyerror("unknown timeout %s", $1);
3926				free($1);
3927				YYERROR;
3928			}
3929			free($1);
3930		}
3931		;
3932
3933timeout_list	: timeout_list comma timeout_spec
3934		| timeout_spec
3935		;
3936
3937limit_spec	: STRING number
3938		{
3939			if (check_rulestate(PFCTL_STATE_OPTION)) {
3940				free($1);
3941				YYERROR;
3942			}
3943			if (pfctl_set_limit(pf, $1, $2) != 0) {
3944				yyerror("unable to set limit %s %u", $1, $2);
3945				free($1);
3946				YYERROR;
3947			}
3948			free($1);
3949		}
3950		;
3951
3952limit_list	: limit_list comma limit_spec
3953		| limit_spec
3954		;
3955
3956comma		: ','
3957		| /* empty */
3958		;
3959
3960yesno		: NO			{ $$ = 0; }
3961		| STRING		{
3962			if (!strcmp($1, "yes"))
3963				$$ = 1;
3964			else {
3965				yyerror("invalid value '%s', expected 'yes' "
3966				    "or 'no'", $1);
3967				free($1);
3968				YYERROR;
3969			}
3970			free($1);
3971		}
3972		;
3973
3974unaryop		: '='		{ $$ = PF_OP_EQ; }
3975		| '!' '='	{ $$ = PF_OP_NE; }
3976		| '<' '='	{ $$ = PF_OP_LE; }
3977		| '<'		{ $$ = PF_OP_LT; }
3978		| '>' '='	{ $$ = PF_OP_GE; }
3979		| '>'		{ $$ = PF_OP_GT; }
3980		;
3981
3982%%
3983
3984int
3985yyerror(const char *fmt, ...)
3986{
3987	va_list		 ap;
3988	extern char	*infile;
3989
3990	errors = 1;
3991	va_start(ap, fmt);
3992	fprintf(stderr, "%s:%d: ", infile, yylval.lineno);
3993	vfprintf(stderr, fmt, ap);
3994	fprintf(stderr, "\n");
3995	va_end(ap);
3996	return (0);
3997}
3998
3999int
4000disallow_table(struct node_host *h, const char *fmt)
4001{
4002	for (; h != NULL; h = h->next)
4003		if (h->addr.type == PF_ADDR_TABLE) {
4004			yyerror(fmt, h->addr.v.tblname);
4005			return (1);
4006		}
4007	return (0);
4008}
4009
4010int
4011disallow_urpf_failed(struct node_host *h, const char *fmt)
4012{
4013	for (; h != NULL; h = h->next)
4014		if (h->addr.type == PF_ADDR_URPFFAILED) {
4015			yyerror(fmt);
4016			return (1);
4017		}
4018	return (0);
4019}
4020
4021int
4022disallow_alias(struct node_host *h, const char *fmt)
4023{
4024	for (; h != NULL; h = h->next)
4025		if (DYNIF_MULTIADDR(h->addr)) {
4026			yyerror(fmt, h->addr.v.tblname);
4027			return (1);
4028		}
4029	return (0);
4030}
4031
4032int
4033rule_consistent(struct pf_rule *r, int anchor_call)
4034{
4035	int	problems = 0;
4036
4037	switch (r->action) {
4038	case PF_PASS:
4039	case PF_DROP:
4040	case PF_SCRUB:
4041	case PF_NOSCRUB:
4042		problems = filter_consistent(r, anchor_call);
4043		break;
4044	case PF_NAT:
4045	case PF_NONAT:
4046		problems = nat_consistent(r);
4047		break;
4048	case PF_RDR:
4049	case PF_NORDR:
4050		problems = rdr_consistent(r);
4051		break;
4052	case PF_BINAT:
4053	case PF_NOBINAT:
4054	default:
4055		break;
4056	}
4057	return (problems);
4058}
4059
4060int
4061filter_consistent(struct pf_rule *r, int anchor_call)
4062{
4063	int	problems = 0;
4064
4065	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
4066	    (r->src.port_op || r->dst.port_op)) {
4067		yyerror("port only applies to tcp/udp");
4068		problems++;
4069	}
4070	if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
4071	    (r->type || r->code)) {
4072		yyerror("icmp-type/code only applies to icmp");
4073		problems++;
4074	}
4075	if (!r->af && (r->type || r->code)) {
4076		yyerror("must indicate address family with icmp-type/code");
4077		problems++;
4078	}
4079	if (r->overload_tblname[0] &&
4080	    r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
4081		yyerror("'overload' requires 'max-src-conn' "
4082		    "or 'max-src-conn-rate'");
4083		problems++;
4084	}
4085	if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
4086	    (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
4087		yyerror("proto %s doesn't match address family %s",
4088		    r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
4089		    r->af == AF_INET ? "inet" : "inet6");
4090		problems++;
4091	}
4092	if (r->allow_opts && r->action != PF_PASS) {
4093		yyerror("allow-opts can only be specified for pass rules");
4094		problems++;
4095	}
4096	if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
4097	    r->dst.port_op || r->flagset || r->type || r->code)) {
4098		yyerror("fragments can be filtered only on IP header fields");
4099		problems++;
4100	}
4101	if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
4102		yyerror("return-rst can only be applied to TCP rules");
4103		problems++;
4104	}
4105	if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
4106		yyerror("max-src-nodes requires 'source-track rule'");
4107		problems++;
4108	}
4109	if (r->action == PF_DROP && r->keep_state) {
4110		yyerror("keep state on block rules doesn't make sense");
4111		problems++;
4112	}
4113	return (-problems);
4114}
4115
4116int
4117nat_consistent(struct pf_rule *r)
4118{
4119	return (0);	/* yeah! */
4120}
4121
4122int
4123rdr_consistent(struct pf_rule *r)
4124{
4125	int			 problems = 0;
4126
4127	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) {
4128		if (r->src.port_op) {
4129			yyerror("src port only applies to tcp/udp");
4130			problems++;
4131		}
4132		if (r->dst.port_op) {
4133			yyerror("dst port only applies to tcp/udp");
4134			problems++;
4135		}
4136		if (r->rpool.proxy_port[0]) {
4137			yyerror("rpool port only applies to tcp/udp");
4138			problems++;
4139		}
4140	}
4141	if (r->dst.port_op &&
4142	    r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) {
4143		yyerror("invalid port operator for rdr destination port");
4144		problems++;
4145	}
4146	return (-problems);
4147}
4148
4149int
4150process_tabledef(char *name, struct table_opts *opts)
4151{
4152	struct pfr_buffer	 ab;
4153	struct node_tinit	*ti;
4154
4155	bzero(&ab, sizeof(ab));
4156	ab.pfrb_type = PFRB_ADDRS;
4157	SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
4158		if (ti->file)
4159			if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
4160				if (errno)
4161					yyerror("cannot load \"%s\": %s",
4162					    ti->file, strerror(errno));
4163				else
4164					yyerror("file \"%s\" contains bad data",
4165					    ti->file);
4166				goto _error;
4167			}
4168		if (ti->host)
4169			if (append_addr_host(&ab, ti->host, 0, 0)) {
4170				yyerror("cannot create address buffer: %s",
4171				    strerror(errno));
4172				goto _error;
4173			}
4174	}
4175	if (pf->opts & PF_OPT_VERBOSE)
4176		print_tabledef(name, opts->flags, opts->init_addr,
4177		    &opts->init_nodes);
4178	if (!(pf->opts & PF_OPT_NOACTION) &&
4179	    pfctl_define_table(name, opts->flags, opts->init_addr,
4180	    pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
4181		yyerror("cannot define table %s: %s", name,
4182		    pfr_strerror(errno));
4183		goto _error;
4184	}
4185	pf->tdirty = 1;
4186	pfr_buf_clear(&ab);
4187	return (0);
4188_error:
4189	pfr_buf_clear(&ab);
4190	return (-1);
4191}
4192
4193struct keywords {
4194	const char	*k_name;
4195	int		 k_val;
4196};
4197
4198/* macro gore, but you should've seen the prior indentation nightmare... */
4199
4200#define FREE_LIST(T,r) \
4201	do { \
4202		T *p, *node = r; \
4203		while (node != NULL) { \
4204			p = node; \
4205			node = node->next; \
4206			free(p); \
4207		} \
4208	} while (0)
4209
4210#define LOOP_THROUGH(T,n,r,C) \
4211	do { \
4212		T *n; \
4213		if (r == NULL) { \
4214			r = calloc(1, sizeof(T)); \
4215			if (r == NULL) \
4216				err(1, "LOOP: calloc"); \
4217			r->next = NULL; \
4218		} \
4219		n = r; \
4220		while (n != NULL) { \
4221			do { \
4222				C; \
4223			} while (0); \
4224			n = n->next; \
4225		} \
4226	} while (0)
4227
4228void
4229expand_label_str(char *label, size_t len, const char *srch, const char *repl)
4230{
4231	char *tmp;
4232	char *p, *q;
4233
4234	if ((tmp = calloc(1, len)) == NULL)
4235		err(1, "expand_label_str: calloc");
4236	p = q = label;
4237	while ((q = strstr(p, srch)) != NULL) {
4238		*q = '\0';
4239		if ((strlcat(tmp, p, len) >= len) ||
4240		    (strlcat(tmp, repl, len) >= len))
4241			errx(1, "expand_label: label too long");
4242		q += strlen(srch);
4243		p = q;
4244	}
4245	if (strlcat(tmp, p, len) >= len)
4246		errx(1, "expand_label: label too long");
4247	strlcpy(label, tmp, len);	/* always fits */
4248	free(tmp);
4249}
4250
4251void
4252expand_label_if(const char *name, char *label, size_t len, const char *ifname)
4253{
4254	if (strstr(label, name) != NULL) {
4255		if (!*ifname)
4256			expand_label_str(label, len, name, "any");
4257		else
4258			expand_label_str(label, len, name, ifname);
4259	}
4260}
4261
4262void
4263expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
4264    struct node_host *h)
4265{
4266	char tmp[64], tmp_not[66];
4267
4268	if (strstr(label, name) != NULL) {
4269		switch (h->addr.type) {
4270		case PF_ADDR_DYNIFTL:
4271			snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname);
4272			break;
4273		case PF_ADDR_TABLE:
4274			snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname);
4275			break;
4276		case PF_ADDR_NOROUTE:
4277			snprintf(tmp, sizeof(tmp), "no-route");
4278			break;
4279		case PF_ADDR_URPFFAILED:
4280			snprintf(tmp, sizeof(tmp), "urpf-failed");
4281			break;
4282		case PF_ADDR_ADDRMASK:
4283			if (!af || (PF_AZERO(&h->addr.v.a.addr, af) &&
4284			    PF_AZERO(&h->addr.v.a.mask, af)))
4285				snprintf(tmp, sizeof(tmp), "any");
4286			else {
4287				char	a[48];
4288				int	bits;
4289
4290				if (inet_ntop(af, &h->addr.v.a.addr, a,
4291				    sizeof(a)) == NULL)
4292					snprintf(tmp, sizeof(tmp), "?");
4293				else {
4294					bits = unmask(&h->addr.v.a.mask, af);
4295					if ((af == AF_INET && bits < 32) ||
4296					    (af == AF_INET6 && bits < 128))
4297						snprintf(tmp, sizeof(tmp),
4298						    "%s/%d", a, bits);
4299					else
4300						snprintf(tmp, sizeof(tmp),
4301						    "%s", a);
4302				}
4303			}
4304			break;
4305		default:
4306			snprintf(tmp, sizeof(tmp), "?");
4307			break;
4308		}
4309
4310		if (h->not) {
4311			snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
4312			expand_label_str(label, len, name, tmp_not);
4313		} else
4314			expand_label_str(label, len, name, tmp);
4315	}
4316}
4317
4318void
4319expand_label_port(const char *name, char *label, size_t len,
4320    struct node_port *port)
4321{
4322	char	 a1[6], a2[6], op[13] = "";
4323
4324	if (strstr(label, name) != NULL) {
4325		snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0]));
4326		snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1]));
4327		if (!port->op)
4328			;
4329		else if (port->op == PF_OP_IRG)
4330			snprintf(op, sizeof(op), "%s><%s", a1, a2);
4331		else if (port->op == PF_OP_XRG)
4332			snprintf(op, sizeof(op), "%s<>%s", a1, a2);
4333		else if (port->op == PF_OP_EQ)
4334			snprintf(op, sizeof(op), "%s", a1);
4335		else if (port->op == PF_OP_NE)
4336			snprintf(op, sizeof(op), "!=%s", a1);
4337		else if (port->op == PF_OP_LT)
4338			snprintf(op, sizeof(op), "<%s", a1);
4339		else if (port->op == PF_OP_LE)
4340			snprintf(op, sizeof(op), "<=%s", a1);
4341		else if (port->op == PF_OP_GT)
4342			snprintf(op, sizeof(op), ">%s", a1);
4343		else if (port->op == PF_OP_GE)
4344			snprintf(op, sizeof(op), ">=%s", a1);
4345		expand_label_str(label, len, name, op);
4346	}
4347}
4348
4349void
4350expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
4351{
4352	struct protoent *pe;
4353	char n[4];
4354
4355	if (strstr(label, name) != NULL) {
4356		pe = getprotobynumber(proto);
4357		if (pe != NULL)
4358			expand_label_str(label, len, name, pe->p_name);
4359		else {
4360			snprintf(n, sizeof(n), "%u", proto);
4361			expand_label_str(label, len, name, n);
4362		}
4363	}
4364}
4365
4366void
4367expand_label_nr(const char *name, char *label, size_t len)
4368{
4369	char n[11];
4370
4371	if (strstr(label, name) != NULL) {
4372		snprintf(n, sizeof(n), "%u", pf->anchor->match);
4373		expand_label_str(label, len, name, n);
4374	}
4375}
4376
4377void
4378expand_label(char *label, size_t len, const char *ifname, sa_family_t af,
4379    struct node_host *src_host, struct node_port *src_port,
4380    struct node_host *dst_host, struct node_port *dst_port,
4381    u_int8_t proto)
4382{
4383	expand_label_if("$if", label, len, ifname);
4384	expand_label_addr("$srcaddr", label, len, af, src_host);
4385	expand_label_addr("$dstaddr", label, len, af, dst_host);
4386	expand_label_port("$srcport", label, len, src_port);
4387	expand_label_port("$dstport", label, len, dst_port);
4388	expand_label_proto("$proto", label, len, proto);
4389	expand_label_nr("$nr", label, len);
4390}
4391
4392int
4393expand_altq(struct pf_altq *a, struct node_if *interfaces,
4394    struct node_queue *nqueues, struct node_queue_bw bwspec,
4395    struct node_queue_opt *opts)
4396{
4397	struct pf_altq		 pa, pb;
4398	char			 qname[PF_QNAME_SIZE];
4399	struct node_queue	*n;
4400	struct node_queue_bw	 bw;
4401	int			 errs = 0;
4402
4403	if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4404		FREE_LIST(struct node_if, interfaces);
4405		FREE_LIST(struct node_queue, nqueues);
4406		return (0);
4407	}
4408
4409	LOOP_THROUGH(struct node_if, interface, interfaces,
4410		memcpy(&pa, a, sizeof(struct pf_altq));
4411		if (strlcpy(pa.ifname, interface->ifname,
4412		    sizeof(pa.ifname)) >= sizeof(pa.ifname))
4413			errx(1, "expand_altq: strlcpy");
4414
4415		if (interface->not) {
4416			yyerror("altq on ! <interface> is not supported");
4417			errs++;
4418		} else {
4419			if (eval_pfaltq(pf, &pa, &bwspec, opts))
4420				errs++;
4421			else
4422				if (pfctl_add_altq(pf, &pa))
4423					errs++;
4424
4425			if (pf->opts & PF_OPT_VERBOSE) {
4426				print_altq(&pf->paltq->altq, 0,
4427				    &bwspec, opts);
4428				if (nqueues && nqueues->tail) {
4429					printf("queue { ");
4430					LOOP_THROUGH(struct node_queue, queue,
4431					    nqueues,
4432						printf("%s ",
4433						    queue->queue);
4434					);
4435					printf("}");
4436				}
4437				printf("\n");
4438			}
4439
4440			if (pa.scheduler == ALTQT_CBQ ||
4441			    pa.scheduler == ALTQT_HFSC) {
4442				/* now create a root queue */
4443				memset(&pb, 0, sizeof(struct pf_altq));
4444				if (strlcpy(qname, "root_", sizeof(qname)) >=
4445				    sizeof(qname))
4446					errx(1, "expand_altq: strlcpy");
4447				if (strlcat(qname, interface->ifname,
4448				    sizeof(qname)) >= sizeof(qname))
4449					errx(1, "expand_altq: strlcat");
4450				if (strlcpy(pb.qname, qname,
4451				    sizeof(pb.qname)) >= sizeof(pb.qname))
4452					errx(1, "expand_altq: strlcpy");
4453				if (strlcpy(pb.ifname, interface->ifname,
4454				    sizeof(pb.ifname)) >= sizeof(pb.ifname))
4455					errx(1, "expand_altq: strlcpy");
4456				pb.qlimit = pa.qlimit;
4457				pb.scheduler = pa.scheduler;
4458				bw.bw_absolute = pa.ifbandwidth;
4459				bw.bw_percent = 0;
4460				if (eval_pfqueue(pf, &pb, &bw, opts))
4461					errs++;
4462				else
4463					if (pfctl_add_altq(pf, &pb))
4464						errs++;
4465			}
4466
4467			LOOP_THROUGH(struct node_queue, queue, nqueues,
4468				n = calloc(1, sizeof(struct node_queue));
4469				if (n == NULL)
4470					err(1, "expand_altq: calloc");
4471				if (pa.scheduler == ALTQT_CBQ ||
4472				    pa.scheduler == ALTQT_HFSC)
4473					if (strlcpy(n->parent, qname,
4474					    sizeof(n->parent)) >=
4475					    sizeof(n->parent))
4476						errx(1, "expand_altq: strlcpy");
4477				if (strlcpy(n->queue, queue->queue,
4478				    sizeof(n->queue)) >= sizeof(n->queue))
4479					errx(1, "expand_altq: strlcpy");
4480				if (strlcpy(n->ifname, interface->ifname,
4481				    sizeof(n->ifname)) >= sizeof(n->ifname))
4482					errx(1, "expand_altq: strlcpy");
4483				n->scheduler = pa.scheduler;
4484				n->next = NULL;
4485				n->tail = n;
4486				if (queues == NULL)
4487					queues = n;
4488				else {
4489					queues->tail->next = n;
4490					queues->tail = n;
4491				}
4492			);
4493		}
4494	);
4495	FREE_LIST(struct node_if, interfaces);
4496	FREE_LIST(struct node_queue, nqueues);
4497
4498	return (errs);
4499}
4500
4501int
4502expand_queue(struct pf_altq *a, struct node_if *interfaces,
4503    struct node_queue *nqueues, struct node_queue_bw bwspec,
4504    struct node_queue_opt *opts)
4505{
4506	struct node_queue	*n, *nq;
4507	struct pf_altq		 pa;
4508	u_int8_t		 found = 0;
4509	u_int8_t		 errs = 0;
4510
4511	if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4512		FREE_LIST(struct node_queue, nqueues);
4513		return (0);
4514	}
4515
4516	if (queues == NULL) {
4517		yyerror("queue %s has no parent", a->qname);
4518		FREE_LIST(struct node_queue, nqueues);
4519		return (1);
4520	}
4521
4522	LOOP_THROUGH(struct node_if, interface, interfaces,
4523		LOOP_THROUGH(struct node_queue, tqueue, queues,
4524			if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
4525			    (interface->ifname[0] == 0 ||
4526			    (!interface->not && !strncmp(interface->ifname,
4527			    tqueue->ifname, IFNAMSIZ)) ||
4528			    (interface->not && strncmp(interface->ifname,
4529			    tqueue->ifname, IFNAMSIZ)))) {
4530				/* found ourself in queues */
4531				found++;
4532
4533				memcpy(&pa, a, sizeof(struct pf_altq));
4534
4535				if (pa.scheduler != ALTQT_NONE &&
4536				    pa.scheduler != tqueue->scheduler) {
4537					yyerror("exactly one scheduler type "
4538					    "per interface allowed");
4539					return (1);
4540				}
4541				pa.scheduler = tqueue->scheduler;
4542
4543				/* scheduler dependent error checking */
4544				switch (pa.scheduler) {
4545				case ALTQT_PRIQ:
4546					if (nqueues != NULL) {
4547						yyerror("priq queues cannot "
4548						    "have child queues");
4549						return (1);
4550					}
4551					if (bwspec.bw_absolute > 0 ||
4552					    bwspec.bw_percent < 100) {
4553						yyerror("priq doesn't take "
4554						    "bandwidth");
4555						return (1);
4556					}
4557					break;
4558				default:
4559					break;
4560				}
4561
4562				if (strlcpy(pa.ifname, tqueue->ifname,
4563				    sizeof(pa.ifname)) >= sizeof(pa.ifname))
4564					errx(1, "expand_queue: strlcpy");
4565				if (strlcpy(pa.parent, tqueue->parent,
4566				    sizeof(pa.parent)) >= sizeof(pa.parent))
4567					errx(1, "expand_queue: strlcpy");
4568
4569				if (eval_pfqueue(pf, &pa, &bwspec, opts))
4570					errs++;
4571				else
4572					if (pfctl_add_altq(pf, &pa))
4573						errs++;
4574
4575				for (nq = nqueues; nq != NULL; nq = nq->next) {
4576					if (!strcmp(a->qname, nq->queue)) {
4577						yyerror("queue cannot have "
4578						    "itself as child");
4579						errs++;
4580						continue;
4581					}
4582					n = calloc(1,
4583					    sizeof(struct node_queue));
4584					if (n == NULL)
4585						err(1, "expand_queue: calloc");
4586					if (strlcpy(n->parent, a->qname,
4587					    sizeof(n->parent)) >=
4588					    sizeof(n->parent))
4589						errx(1, "expand_queue strlcpy");
4590					if (strlcpy(n->queue, nq->queue,
4591					    sizeof(n->queue)) >=
4592					    sizeof(n->queue))
4593						errx(1, "expand_queue strlcpy");
4594					if (strlcpy(n->ifname, tqueue->ifname,
4595					    sizeof(n->ifname)) >=
4596					    sizeof(n->ifname))
4597						errx(1, "expand_queue strlcpy");
4598					n->scheduler = tqueue->scheduler;
4599					n->next = NULL;
4600					n->tail = n;
4601					if (queues == NULL)
4602						queues = n;
4603					else {
4604						queues->tail->next = n;
4605						queues->tail = n;
4606					}
4607				}
4608				if ((pf->opts & PF_OPT_VERBOSE) && (
4609				    (found == 1 && interface->ifname[0] == 0) ||
4610				    (found > 0 && interface->ifname[0] != 0))) {
4611					print_queue(&pf->paltq->altq, 0,
4612					    &bwspec, interface->ifname[0] != 0,
4613					    opts);
4614					if (nqueues && nqueues->tail) {
4615						printf("{ ");
4616						LOOP_THROUGH(struct node_queue,
4617						    queue, nqueues,
4618							printf("%s ",
4619							    queue->queue);
4620						);
4621						printf("}");
4622					}
4623					printf("\n");
4624				}
4625			}
4626		);
4627	);
4628
4629	FREE_LIST(struct node_queue, nqueues);
4630	FREE_LIST(struct node_if, interfaces);
4631
4632	if (!found) {
4633		yyerror("queue %s has no parent", a->qname);
4634		errs++;
4635	}
4636
4637	if (errs)
4638		return (1);
4639	else
4640		return (0);
4641}
4642
4643void
4644expand_rule(struct pf_rule *r,
4645    struct node_if *interfaces, struct node_host *rpool_hosts,
4646    struct node_proto *protos, struct node_os *src_oses,
4647    struct node_host *src_hosts, struct node_port *src_ports,
4648    struct node_host *dst_hosts, struct node_port *dst_ports,
4649    struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
4650    const char *anchor_call)
4651{
4652	sa_family_t		 af = r->af;
4653	int			 added = 0, error = 0;
4654	char			 ifname[IF_NAMESIZE];
4655	char			 label[PF_RULE_LABEL_SIZE];
4656	char			 tagname[PF_TAG_NAME_SIZE];
4657	char			 match_tagname[PF_TAG_NAME_SIZE];
4658	struct pf_pooladdr	*pa;
4659	struct node_host	*h;
4660	u_int8_t		 flags, flagset, keep_state;
4661
4662	if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label))
4663		errx(1, "expand_rule: strlcpy");
4664	if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
4665		errx(1, "expand_rule: strlcpy");
4666	if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
4667	    sizeof(match_tagname))
4668		errx(1, "expand_rule: strlcpy");
4669	flags = r->flags;
4670	flagset = r->flagset;
4671	keep_state = r->keep_state;
4672
4673	LOOP_THROUGH(struct node_if, interface, interfaces,
4674	LOOP_THROUGH(struct node_proto, proto, protos,
4675	LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
4676	LOOP_THROUGH(struct node_host, src_host, src_hosts,
4677	LOOP_THROUGH(struct node_port, src_port, src_ports,
4678	LOOP_THROUGH(struct node_os, src_os, src_oses,
4679	LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
4680	LOOP_THROUGH(struct node_port, dst_port, dst_ports,
4681	LOOP_THROUGH(struct node_uid, uid, uids,
4682	LOOP_THROUGH(struct node_gid, gid, gids,
4683
4684		r->af = af;
4685		/* for link-local IPv6 address, interface must match up */
4686		if ((r->af && src_host->af && r->af != src_host->af) ||
4687		    (r->af && dst_host->af && r->af != dst_host->af) ||
4688		    (src_host->af && dst_host->af &&
4689		    src_host->af != dst_host->af) ||
4690		    (src_host->ifindex && dst_host->ifindex &&
4691		    src_host->ifindex != dst_host->ifindex) ||
4692		    (src_host->ifindex && *interface->ifname &&
4693		    src_host->ifindex != if_nametoindex(interface->ifname)) ||
4694		    (dst_host->ifindex && *interface->ifname &&
4695		    dst_host->ifindex != if_nametoindex(interface->ifname)))
4696			continue;
4697		if (!r->af && src_host->af)
4698			r->af = src_host->af;
4699		else if (!r->af && dst_host->af)
4700			r->af = dst_host->af;
4701
4702		if (*interface->ifname)
4703			strlcpy(r->ifname, interface->ifname,
4704			    sizeof(r->ifname));
4705		else if (if_indextoname(src_host->ifindex, ifname))
4706			strlcpy(r->ifname, ifname, sizeof(r->ifname));
4707		else if (if_indextoname(dst_host->ifindex, ifname))
4708			strlcpy(r->ifname, ifname, sizeof(r->ifname));
4709		else
4710			memset(r->ifname, '\0', sizeof(r->ifname));
4711
4712		if (strlcpy(r->label, label, sizeof(r->label)) >=
4713		    sizeof(r->label))
4714			errx(1, "expand_rule: strlcpy");
4715		if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
4716		    sizeof(r->tagname))
4717			errx(1, "expand_rule: strlcpy");
4718		if (strlcpy(r->match_tagname, match_tagname,
4719		    sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
4720			errx(1, "expand_rule: strlcpy");
4721		expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af,
4722		    src_host, src_port, dst_host, dst_port, proto->proto);
4723		expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af,
4724		    src_host, src_port, dst_host, dst_port, proto->proto);
4725		expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname,
4726		    r->af, src_host, src_port, dst_host, dst_port,
4727		    proto->proto);
4728
4729		error += check_netmask(src_host, r->af);
4730		error += check_netmask(dst_host, r->af);
4731
4732		r->ifnot = interface->not;
4733		r->proto = proto->proto;
4734		r->src.addr = src_host->addr;
4735		r->src.neg = src_host->not;
4736		r->src.port[0] = src_port->port[0];
4737		r->src.port[1] = src_port->port[1];
4738		r->src.port_op = src_port->op;
4739		r->dst.addr = dst_host->addr;
4740		r->dst.neg = dst_host->not;
4741		r->dst.port[0] = dst_port->port[0];
4742		r->dst.port[1] = dst_port->port[1];
4743		r->dst.port_op = dst_port->op;
4744		r->uid.op = uid->op;
4745		r->uid.uid[0] = uid->uid[0];
4746		r->uid.uid[1] = uid->uid[1];
4747		r->gid.op = gid->op;
4748		r->gid.gid[0] = gid->gid[0];
4749		r->gid.gid[1] = gid->gid[1];
4750		r->type = icmp_type->type;
4751		r->code = icmp_type->code;
4752
4753		if ((keep_state == PF_STATE_MODULATE ||
4754		    keep_state == PF_STATE_SYNPROXY) &&
4755		    r->proto && r->proto != IPPROTO_TCP)
4756			r->keep_state = PF_STATE_NORMAL;
4757		else
4758			r->keep_state = keep_state;
4759
4760		if (r->proto && r->proto != IPPROTO_TCP) {
4761			r->flags = 0;
4762			r->flagset = 0;
4763		} else {
4764			r->flags = flags;
4765			r->flagset = flagset;
4766		}
4767		if (icmp_type->proto && r->proto != icmp_type->proto) {
4768			yyerror("icmp-type mismatch");
4769			error++;
4770		}
4771
4772		if (src_os && src_os->os) {
4773			r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
4774			if ((pf->opts & PF_OPT_VERBOSE2) &&
4775			    r->os_fingerprint == PF_OSFP_NOMATCH)
4776				fprintf(stderr,
4777				    "warning: unknown '%s' OS fingerprint\n",
4778				    src_os->os);
4779		} else {
4780			r->os_fingerprint = PF_OSFP_ANY;
4781		}
4782
4783		TAILQ_INIT(&r->rpool.list);
4784		for (h = rpool_hosts; h != NULL; h = h->next) {
4785			pa = calloc(1, sizeof(struct pf_pooladdr));
4786			if (pa == NULL)
4787				err(1, "expand_rule: calloc");
4788			pa->addr = h->addr;
4789			if (h->ifname != NULL) {
4790				if (strlcpy(pa->ifname, h->ifname,
4791				    sizeof(pa->ifname)) >=
4792				    sizeof(pa->ifname))
4793					errx(1, "expand_rule: strlcpy");
4794			} else
4795				pa->ifname[0] = 0;
4796			TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries);
4797		}
4798
4799		if (rule_consistent(r, anchor_call[0]) < 0 || error)
4800			yyerror("skipping rule due to errors");
4801		else {
4802			r->nr = pf->astack[pf->asd]->match++;
4803			pfctl_add_rule(pf, r, anchor_call);
4804			added++;
4805		}
4806
4807	))))))))));
4808
4809	FREE_LIST(struct node_if, interfaces);
4810	FREE_LIST(struct node_proto, protos);
4811	FREE_LIST(struct node_host, src_hosts);
4812	FREE_LIST(struct node_port, src_ports);
4813	FREE_LIST(struct node_os, src_oses);
4814	FREE_LIST(struct node_host, dst_hosts);
4815	FREE_LIST(struct node_port, dst_ports);
4816	FREE_LIST(struct node_uid, uids);
4817	FREE_LIST(struct node_gid, gids);
4818	FREE_LIST(struct node_icmp, icmp_types);
4819	FREE_LIST(struct node_host, rpool_hosts);
4820
4821	if (!added)
4822		yyerror("rule expands to no valid combination");
4823}
4824
4825int
4826expand_skip_interface(struct node_if *interfaces)
4827{
4828	int	errs = 0;
4829
4830	if (!interfaces || (!interfaces->next && !interfaces->not &&
4831	    !strcmp(interfaces->ifname, "none"))) {
4832		if (pf->opts & PF_OPT_VERBOSE)
4833			printf("set skip on none\n");
4834		errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
4835		return (errs);
4836	}
4837
4838	if (pf->opts & PF_OPT_VERBOSE)
4839		printf("set skip on {");
4840	LOOP_THROUGH(struct node_if, interface, interfaces,
4841		if (pf->opts & PF_OPT_VERBOSE)
4842			printf(" %s", interface->ifname);
4843		if (interface->not) {
4844			yyerror("skip on ! <interface> is not supported");
4845			errs++;
4846		} else
4847			errs += pfctl_set_interface_flags(pf,
4848			    interface->ifname, PFI_IFLAG_SKIP, 1);
4849	);
4850	if (pf->opts & PF_OPT_VERBOSE)
4851		printf(" }\n");
4852
4853	FREE_LIST(struct node_if, interfaces);
4854
4855	if (errs)
4856		return (1);
4857	else
4858		return (0);
4859}
4860
4861#undef FREE_LIST
4862#undef LOOP_THROUGH
4863
4864int
4865check_rulestate(int desired_state)
4866{
4867	if (require_order && (rulestate > desired_state)) {
4868		yyerror("Rules must be in order: options, normalization, "
4869		    "queueing, translation, filtering");
4870		return (1);
4871	}
4872	rulestate = desired_state;
4873	return (0);
4874}
4875
4876int
4877kw_cmp(const void *k, const void *e)
4878{
4879	return (strcmp(k, ((const struct keywords *)e)->k_name));
4880}
4881
4882int
4883lookup(char *s)
4884{
4885	/* this has to be sorted always */
4886	static const struct keywords keywords[] = {
4887		{ "all",		ALL},
4888		{ "allow-opts",		ALLOWOPTS},
4889		{ "altq",		ALTQ},
4890		{ "anchor",		ANCHOR},
4891		{ "antispoof",		ANTISPOOF},
4892		{ "any",		ANY},
4893		{ "bandwidth",		BANDWIDTH},
4894		{ "binat",		BINAT},
4895		{ "binat-anchor",	BINATANCHOR},
4896		{ "bitmask",		BITMASK},
4897		{ "block",		BLOCK},
4898		{ "block-policy",	BLOCKPOLICY},
4899		{ "cbq",		CBQ},
4900		{ "code",		CODE},
4901		{ "crop",		FRAGCROP},
4902		{ "debug",		DEBUG},
4903		{ "drop",		DROP},
4904		{ "drop-ovl",		FRAGDROP},
4905		{ "dup-to",		DUPTO},
4906		{ "fastroute",		FASTROUTE},
4907		{ "file",		FILENAME},
4908		{ "fingerprints",	FINGERPRINTS},
4909		{ "flags",		FLAGS},
4910		{ "floating",		FLOATING},
4911		{ "flush",		FLUSH},
4912		{ "for",		FOR},
4913		{ "fragment",		FRAGMENT},
4914		{ "from",		FROM},
4915		{ "global",		GLOBAL},
4916		{ "group",		GROUP},
4917		{ "hfsc",		HFSC},
4918		{ "hostid",		HOSTID},
4919		{ "icmp-type",		ICMPTYPE},
4920		{ "icmp6-type",		ICMP6TYPE},
4921		{ "if-bound",		IFBOUND},
4922		{ "in",			IN},
4923		{ "inet",		INET},
4924		{ "inet6",		INET6},
4925		{ "keep",		KEEP},
4926		{ "label",		LABEL},
4927		{ "limit",		LIMIT},
4928		{ "linkshare",		LINKSHARE},
4929		{ "load",		LOAD},
4930		{ "log",		LOG},
4931		{ "loginterface",	LOGINTERFACE},
4932		{ "max",		MAXIMUM},
4933		{ "max-mss",		MAXMSS},
4934		{ "max-src-conn",	MAXSRCCONN},
4935		{ "max-src-conn-rate",	MAXSRCCONNRATE},
4936		{ "max-src-nodes",	MAXSRCNODES},
4937		{ "max-src-states",	MAXSRCSTATES},
4938		{ "min-ttl",		MINTTL},
4939		{ "modulate",		MODULATE},
4940		{ "nat",		NAT},
4941		{ "nat-anchor",		NATANCHOR},
4942		{ "no",			NO},
4943		{ "no-df",		NODF},
4944		{ "no-route",		NOROUTE},
4945		{ "no-sync",		NOSYNC},
4946		{ "on",			ON},
4947		{ "optimization",	OPTIMIZATION},
4948		{ "os",			OS},
4949		{ "out",		OUT},
4950		{ "overload",		OVERLOAD},
4951		{ "pass",		PASS},
4952		{ "port",		PORT},
4953		{ "priority",		PRIORITY},
4954		{ "priq",		PRIQ},
4955		{ "probability",	PROBABILITY},
4956		{ "proto",		PROTO},
4957		{ "qlimit",		QLIMIT},
4958		{ "queue",		QUEUE},
4959		{ "quick",		QUICK},
4960		{ "random",		RANDOM},
4961		{ "random-id",		RANDOMID},
4962		{ "rdr",		RDR},
4963		{ "rdr-anchor",		RDRANCHOR},
4964		{ "realtime",		REALTIME},
4965		{ "reassemble",		REASSEMBLE},
4966		{ "reply-to",		REPLYTO},
4967		{ "require-order",	REQUIREORDER},
4968		{ "return",		RETURN},
4969		{ "return-icmp",	RETURNICMP},
4970		{ "return-icmp6",	RETURNICMP6},
4971		{ "return-rst",		RETURNRST},
4972		{ "round-robin",	ROUNDROBIN},
4973		{ "route",		ROUTE},
4974		{ "route-to",		ROUTETO},
4975		{ "rtable",		RTABLE},
4976		{ "rule",		RULE},
4977		{ "ruleset-optimization",	RULESET_OPTIMIZATION},
4978		{ "scrub",		SCRUB},
4979		{ "set",		SET},
4980		{ "skip",		SKIP},
4981		{ "source-hash",	SOURCEHASH},
4982		{ "source-track",	SOURCETRACK},
4983		{ "state",		STATE},
4984		{ "state-policy",	STATEPOLICY},
4985		{ "static-port",	STATICPORT},
4986		{ "sticky-address",	STICKYADDRESS},
4987		{ "synproxy",		SYNPROXY},
4988		{ "table",		TABLE},
4989		{ "tag",		TAG},
4990		{ "tagged",		TAGGED},
4991		{ "tbrsize",		TBRSIZE},
4992		{ "timeout",		TIMEOUT},
4993		{ "to",			TO},
4994		{ "tos",		TOS},
4995		{ "ttl",		TTL},
4996		{ "upperlimit",		UPPERLIMIT},
4997		{ "urpf-failed",	URPFFAILED},
4998		{ "user",		USER},
4999	};
5000	const struct keywords	*p;
5001
5002	p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
5003	    sizeof(keywords[0]), kw_cmp);
5004
5005	if (p) {
5006		if (debug > 1)
5007			fprintf(stderr, "%s: %d\n", s, p->k_val);
5008		return (p->k_val);
5009	} else {
5010		if (debug > 1)
5011			fprintf(stderr, "string: %s\n", s);
5012		return (STRING);
5013	}
5014}
5015
5016#define MAXPUSHBACK	128
5017
5018char	*parsebuf;
5019int	 parseindex;
5020char	 pushback_buffer[MAXPUSHBACK];
5021int	 pushback_index = 0;
5022
5023int
5024lgetc(FILE *f)
5025{
5026	int	c, next;
5027
5028	if (parsebuf) {
5029		/* Read character from the parsebuffer instead of input. */
5030		if (parseindex >= 0) {
5031			c = parsebuf[parseindex++];
5032			if (c != '\0')
5033				return (c);
5034			parsebuf = NULL;
5035		} else
5036			parseindex++;
5037	}
5038
5039	if (pushback_index)
5040		return (pushback_buffer[--pushback_index]);
5041
5042	while ((c = getc(f)) == '\\') {
5043		next = getc(f);
5044		if (next != '\n') {
5045			c = next;
5046			break;
5047		}
5048		yylval.lineno = lineno;
5049		lineno++;
5050	}
5051	if (c == '\t' || c == ' ') {
5052		/* Compress blanks to a single space. */
5053		do {
5054			c = getc(f);
5055		} while (c == '\t' || c == ' ');
5056		ungetc(c, f);
5057		c = ' ';
5058	}
5059
5060	return (c);
5061}
5062
5063int
5064lungetc(int c)
5065{
5066	if (c == EOF)
5067		return (EOF);
5068	if (parsebuf) {
5069		parseindex--;
5070		if (parseindex >= 0)
5071			return (c);
5072	}
5073	if (pushback_index < MAXPUSHBACK-1)
5074		return (pushback_buffer[pushback_index++] = c);
5075	else
5076		return (EOF);
5077}
5078
5079int
5080findeol(void)
5081{
5082	int	c;
5083
5084	parsebuf = NULL;
5085	pushback_index = 0;
5086
5087	/* skip to either EOF or the first real EOL */
5088	while (1) {
5089		c = lgetc(fin);
5090		if (c == '\n') {
5091			lineno++;
5092			break;
5093		}
5094		if (c == EOF)
5095			break;
5096	}
5097	return (ERROR);
5098}
5099
5100int
5101yylex(void)
5102{
5103	char	 buf[8096];
5104	char	*p, *val;
5105	int	 endc, c, next;
5106	int	 token;
5107
5108top:
5109	p = buf;
5110	while ((c = lgetc(fin)) == ' ')
5111		; /* nothing */
5112
5113	yylval.lineno = lineno;
5114	if (c == '#')
5115		while ((c = lgetc(fin)) != '\n' && c != EOF)
5116			; /* nothing */
5117	if (c == '$' && parsebuf == NULL) {
5118		while (1) {
5119			if ((c = lgetc(fin)) == EOF)
5120				return (0);
5121
5122			if (p + 1 >= buf + sizeof(buf) - 1) {
5123				yyerror("string too long");
5124				return (findeol());
5125			}
5126			if (isalnum(c) || c == '_') {
5127				*p++ = (char)c;
5128				continue;
5129			}
5130			*p = '\0';
5131			lungetc(c);
5132			break;
5133		}
5134		val = symget(buf);
5135		if (val == NULL) {
5136			yyerror("macro '%s' not defined", buf);
5137			return (findeol());
5138		}
5139		parsebuf = val;
5140		parseindex = 0;
5141		goto top;
5142	}
5143
5144	switch (c) {
5145	case '\'':
5146	case '"':
5147		endc = c;
5148		while (1) {
5149			if ((c = lgetc(fin)) == EOF)
5150				return (0);
5151			if (c == endc) {
5152				*p = '\0';
5153				break;
5154			}
5155			if (c == '\n') {
5156				lineno++;
5157				continue;
5158			}
5159			if (p + 1 >= buf + sizeof(buf) - 1) {
5160				yyerror("string too long");
5161				return (findeol());
5162			}
5163			*p++ = (char)c;
5164		}
5165		yylval.v.string = strdup(buf);
5166		if (yylval.v.string == NULL)
5167			err(1, "yylex: strdup");
5168		return (STRING);
5169	case '<':
5170		next = lgetc(fin);
5171		if (next == '>') {
5172			yylval.v.i = PF_OP_XRG;
5173			return (PORTBINARY);
5174		}
5175		lungetc(next);
5176		break;
5177	case '>':
5178		next = lgetc(fin);
5179		if (next == '<') {
5180			yylval.v.i = PF_OP_IRG;
5181			return (PORTBINARY);
5182		}
5183		lungetc(next);
5184		break;
5185	case '-':
5186		next = lgetc(fin);
5187		if (next == '>')
5188			return (ARROW);
5189		lungetc(next);
5190		break;
5191	}
5192
5193#define allowed_in_string(x) \
5194	(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
5195	x != '{' && x != '}' && x != '<' && x != '>' && \
5196	x != '!' && x != '=' && x != '/' && x != '#' && \
5197	x != ','))
5198
5199	if (isalnum(c) || c == ':' || c == '_') {
5200		do {
5201			*p++ = c;
5202			if ((unsigned)(p-buf) >= sizeof(buf)) {
5203				yyerror("string too long");
5204				return (findeol());
5205			}
5206		} while ((c = lgetc(fin)) != EOF && (allowed_in_string(c)));
5207		lungetc(c);
5208		*p = '\0';
5209		if ((token = lookup(buf)) == STRING)
5210			if ((yylval.v.string = strdup(buf)) == NULL)
5211				err(1, "yylex: strdup");
5212		return (token);
5213	}
5214	if (c == '\n') {
5215		yylval.lineno = lineno;
5216		lineno++;
5217	}
5218	if (c == EOF)
5219		return (0);
5220	return (c);
5221}
5222
5223int
5224parse_rules(FILE *input, struct pfctl *xpf)
5225{
5226	struct sym	*sym, *next;
5227
5228	fin = input;
5229	pf = xpf;
5230	lineno = 1;
5231	errors = 0;
5232	rulestate = PFCTL_STATE_NONE;
5233	returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
5234	returnicmp6default =
5235	    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
5236	blockpolicy = PFRULE_DROP;
5237	require_order = 1;
5238
5239	yyparse();
5240
5241	/* Free macros and check which have not been used. */
5242	for (sym = TAILQ_FIRST(&symhead); sym != NULL; sym = next) {
5243		next = TAILQ_NEXT(sym, entries);
5244		if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
5245			fprintf(stderr, "warning: macro '%s' not "
5246			    "used\n", sym->nam);
5247		free(sym->nam);
5248		free(sym->val);
5249		TAILQ_REMOVE(&symhead, sym, entries);
5250		free(sym);
5251	}
5252
5253	return (errors ? -1 : 0);
5254}
5255
5256/*
5257 * Over-designed efficiency is a French and German concept, so how about
5258 * we wait until they discover this ugliness and make it all fancy.
5259 */
5260int
5261symset(const char *nam, const char *val, int persist)
5262{
5263	struct sym	*sym;
5264
5265	for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
5266	    sym = TAILQ_NEXT(sym, entries))
5267		;	/* nothing */
5268
5269	if (sym != NULL) {
5270		if (sym->persist == 1)
5271			return (0);
5272		else {
5273			free(sym->nam);
5274			free(sym->val);
5275			TAILQ_REMOVE(&symhead, sym, entries);
5276			free(sym);
5277		}
5278	}
5279	if ((sym = calloc(1, sizeof(*sym))) == NULL)
5280		return (-1);
5281
5282	sym->nam = strdup(nam);
5283	if (sym->nam == NULL) {
5284		free(sym);
5285		return (-1);
5286	}
5287	sym->val = strdup(val);
5288	if (sym->val == NULL) {
5289		free(sym->nam);
5290		free(sym);
5291		return (-1);
5292	}
5293	sym->used = 0;
5294	sym->persist = persist;
5295	TAILQ_INSERT_TAIL(&symhead, sym, entries);
5296	return (0);
5297}
5298
5299int
5300pfctl_cmdline_symset(char *s)
5301{
5302	char	*sym, *val;
5303	int	 ret;
5304
5305	if ((val = strrchr(s, '=')) == NULL)
5306		return (-1);
5307
5308	if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
5309		err(1, "pfctl_cmdline_symset: malloc");
5310
5311	strlcpy(sym, s, strlen(s) - strlen(val) + 1);
5312
5313	ret = symset(sym, val + 1, 1);
5314	free(sym);
5315
5316	return (ret);
5317}
5318
5319char *
5320symget(const char *nam)
5321{
5322	struct sym	*sym;
5323
5324	TAILQ_FOREACH(sym, &symhead, entries)
5325		if (strcmp(nam, sym->nam) == 0) {
5326			sym->used = 1;
5327			return (sym->val);
5328		}
5329	return (NULL);
5330}
5331
5332void
5333mv_rules(struct pf_ruleset *src, struct pf_ruleset *dst)
5334{
5335	int i;
5336	struct pf_rule *r;
5337
5338	for (i = 0; i < PF_RULESET_MAX; ++i) {
5339		while ((r = TAILQ_FIRST(src->rules[i].active.ptr))
5340		    != NULL) {
5341			TAILQ_REMOVE(src->rules[i].active.ptr, r, entries);
5342			TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries);
5343			dst->anchor->match++;
5344		}
5345		src->anchor->match = 0;
5346		while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr))
5347		    != NULL) {
5348			TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries);
5349			TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr,
5350				r, entries);
5351		}
5352	}
5353}
5354
5355void
5356decide_address_family(struct node_host *n, sa_family_t *af)
5357{
5358	if (*af != 0 || n == NULL)
5359		return;
5360	*af = n->af;
5361	while ((n = n->next) != NULL) {
5362		if (n->af != *af) {
5363			*af = 0;
5364			return;
5365		}
5366	}
5367}
5368
5369void
5370remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
5371{
5372	struct node_host	*n = *nh, *prev = NULL;
5373
5374	while (n != NULL) {
5375		if (*af && n->af && n->af != *af) {
5376			/* unlink and free n */
5377			struct node_host *next = n->next;
5378
5379			/* adjust tail pointer */
5380			if (n == (*nh)->tail)
5381				(*nh)->tail = prev;
5382			/* adjust previous node's next pointer */
5383			if (prev == NULL)
5384				*nh = next;
5385			else
5386				prev->next = next;
5387			/* free node */
5388			if (n->ifname != NULL)
5389				free(n->ifname);
5390			free(n);
5391			n = next;
5392		} else {
5393			if (n->af && !*af)
5394				*af = n->af;
5395			prev = n;
5396			n = n->next;
5397		}
5398	}
5399}
5400
5401int
5402invalid_redirect(struct node_host *nh, sa_family_t af)
5403{
5404	if (!af) {
5405		struct node_host *n;
5406
5407		/* tables and dyniftl are ok without an address family */
5408		for (n = nh; n != NULL; n = n->next) {
5409			if (n->addr.type != PF_ADDR_TABLE &&
5410			    n->addr.type != PF_ADDR_DYNIFTL) {
5411				yyerror("address family not given and "
5412				    "translation address expands to multiple "
5413				    "address families");
5414				return (1);
5415			}
5416		}
5417	}
5418	if (nh == NULL) {
5419		yyerror("no translation address with matching address family "
5420		    "found.");
5421		return (1);
5422	}
5423	return (0);
5424}
5425
5426int
5427atoul(char *s, u_long *ulvalp)
5428{
5429	u_long	 ulval;
5430	char	*ep;
5431
5432	errno = 0;
5433	ulval = strtoul(s, &ep, 0);
5434	if (s[0] == '\0' || *ep != '\0')
5435		return (-1);
5436	if (errno == ERANGE && ulval == ULONG_MAX)
5437		return (-1);
5438	*ulvalp = ulval;
5439	return (0);
5440}
5441
5442int
5443getservice(char *n)
5444{
5445	struct servent	*s;
5446	u_long		 ulval;
5447
5448	if (atoul(n, &ulval) == 0) {
5449		if (ulval > 65535) {
5450			yyerror("illegal port value %lu", ulval);
5451			return (-1);
5452		}
5453		return (htons(ulval));
5454	} else {
5455		s = getservbyname(n, "tcp");
5456		if (s == NULL)
5457			s = getservbyname(n, "udp");
5458		if (s == NULL) {
5459			yyerror("unknown port %s", n);
5460			return (-1);
5461		}
5462		return (s->s_port);
5463	}
5464}
5465
5466int
5467rule_label(struct pf_rule *r, char *s)
5468{
5469	if (s) {
5470		if (strlcpy(r->label, s, sizeof(r->label)) >=
5471		    sizeof(r->label)) {
5472			yyerror("rule label too long (max %d chars)",
5473			    sizeof(r->label)-1);
5474			return (-1);
5475		}
5476	}
5477	return (0);
5478}
5479
5480u_int16_t
5481parseicmpspec(char *w, sa_family_t af)
5482{
5483	const struct icmpcodeent	*p;
5484	u_long				 ulval;
5485	u_int8_t			 icmptype;
5486
5487	if (af == AF_INET)
5488		icmptype = returnicmpdefault >> 8;
5489	else
5490		icmptype = returnicmp6default >> 8;
5491
5492	if (atoul(w, &ulval) == -1) {
5493		if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
5494			yyerror("unknown icmp code %s", w);
5495			return (0);
5496		}
5497		ulval = p->code;
5498	}
5499	if (ulval > 255) {
5500		yyerror("invalid icmp code %lu", ulval);
5501		return (0);
5502	}
5503	return (icmptype << 8 | ulval);
5504}
5505
5506int
5507pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
5508{
5509	struct loadanchors	*la;
5510	FILE			*fin;
5511
5512	TAILQ_FOREACH(la, &loadanchorshead, entries) {
5513		if (pf->opts & PF_OPT_VERBOSE)
5514			fprintf(stderr, "\nLoading anchor %s from %s\n",
5515			    la->anchorname, la->filename);
5516		if ((fin = pfctl_fopen(la->filename, "r")) == NULL) {
5517			warn("%s", la->filename);
5518			continue;
5519		}
5520		if (pfctl_rules(dev, la->filename, fin, pf->opts, pf->optimize,
5521		    la->anchorname, trans) == -1)
5522			return (-1);
5523	}
5524
5525	return (0);
5526}
5527