parse.y revision 1.576 
1/*	$OpenBSD: parse.y,v 1.576 2009/12/10 15:57:20 deraadt 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/types.h>
31#include <sys/socket.h>
32#include <sys/stat.h>
33#include <net/if.h>
34#include <netinet/in.h>
35#include <netinet/in_systm.h>
36#include <netinet/ip.h>
37#include <netinet/ip_icmp.h>
38#include <netinet/icmp6.h>
39#include <net/pfvar.h>
40#include <arpa/inet.h>
41#include <altq/altq.h>
42#include <altq/altq_cbq.h>
43#include <altq/altq_priq.h>
44#include <altq/altq_hfsc.h>
45
46#include <stdio.h>
47#include <unistd.h>
48#include <stdlib.h>
49#include <netdb.h>
50#include <stdarg.h>
51#include <errno.h>
52#include <string.h>
53#include <ctype.h>
54#include <math.h>
55#include <err.h>
56#include <limits.h>
57#include <pwd.h>
58#include <grp.h>
59#include <md5.h>
60
61#include "pfctl_parser.h"
62#include "pfctl.h"
63
64static struct pfctl	*pf = NULL;
65static int		 debug = 0;
66static int		 rulestate = 0;
67static u_int16_t	 returnicmpdefault =
68			    (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
69static u_int16_t	 returnicmp6default =
70			    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
71static int		 blockpolicy = PFRULE_DROP;
72static int		 require_order = 0;
73static int		 default_statelock;
74
75TAILQ_HEAD(files, file)		 files = TAILQ_HEAD_INITIALIZER(files);
76static struct file {
77	TAILQ_ENTRY(file)	 entry;
78	FILE			*stream;
79	char			*name;
80	int			 lineno;
81	int			 errors;
82} *file;
83struct file	*pushfile(const char *, int);
84int		 popfile(void);
85int		 check_file_secrecy(int, const char *);
86int		 yyparse(void);
87int		 yylex(void);
88int		 yyerror(const char *, ...);
89int		 kw_cmp(const void *, const void *);
90int		 lookup(char *);
91int		 lgetc(int);
92int		 lungetc(int);
93int		 findeol(void);
94
95TAILQ_HEAD(symhead, sym)	 symhead = TAILQ_HEAD_INITIALIZER(symhead);
96struct sym {
97	TAILQ_ENTRY(sym)	 entry;
98	int			 used;
99	int			 persist;
100	char			*nam;
101	char			*val;
102};
103int		 symset(const char *, const char *, int);
104char		*symget(const char *);
105
106int		 atoul(char *, u_long *);
107
108enum {
109	PFCTL_STATE_NONE,
110	PFCTL_STATE_OPTION,
111	PFCTL_STATE_QUEUE,
112	PFCTL_STATE_NAT,
113	PFCTL_STATE_FILTER
114};
115
116struct node_proto {
117	u_int8_t		 proto;
118	struct node_proto	*next;
119	struct node_proto	*tail;
120};
121
122struct node_port {
123	u_int16_t		 port[2];
124	u_int8_t		 op;
125	struct node_port	*next;
126	struct node_port	*tail;
127};
128
129struct node_uid {
130	uid_t			 uid[2];
131	u_int8_t		 op;
132	struct node_uid		*next;
133	struct node_uid		*tail;
134};
135
136struct node_gid {
137	gid_t			 gid[2];
138	u_int8_t		 op;
139	struct node_gid		*next;
140	struct node_gid		*tail;
141};
142
143struct node_icmp {
144	u_int8_t		 code;
145	u_int8_t		 type;
146	u_int8_t		 proto;
147	struct node_icmp	*next;
148	struct node_icmp	*tail;
149};
150
151enum	{ PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
152	    PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
153	    PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
154	    PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
155	    PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY,
156	    PF_STATE_OPT_PFLOW };
157
158enum	{ PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
159
160struct node_state_opt {
161	int			 type;
162	union {
163		u_int32_t	 max_states;
164		u_int32_t	 max_src_states;
165		u_int32_t	 max_src_conn;
166		struct {
167			u_int32_t	limit;
168			u_int32_t	seconds;
169		}		 max_src_conn_rate;
170		struct {
171			u_int8_t	flush;
172			char		tblname[PF_TABLE_NAME_SIZE];
173		}		 overload;
174		u_int32_t	 max_src_nodes;
175		u_int8_t	 src_track;
176		u_int32_t	 statelock;
177		struct {
178			int		number;
179			u_int32_t	seconds;
180		}		 timeout;
181	}			 data;
182	struct node_state_opt	*next;
183	struct node_state_opt	*tail;
184};
185
186struct peer {
187	struct node_host	*host;
188	struct node_port	*port;
189};
190
191struct node_queue {
192	char			 queue[PF_QNAME_SIZE];
193	char			 parent[PF_QNAME_SIZE];
194	char			 ifname[IFNAMSIZ];
195	int			 scheduler;
196	struct node_queue	*next;
197	struct node_queue	*tail;
198}	*queues = NULL;
199
200struct node_qassign {
201	char		*qname;
202	char		*pqname;
203};
204
205struct range {
206	int		 a;
207	int		 b;
208	int		 t;
209};
210struct redirection {
211	struct node_host	*host;
212	struct range		 rport;
213};
214
215struct pool_opts {
216	int			 marker;
217#define POM_TYPE		0x01
218#define POM_STICKYADDRESS	0x02
219	u_int8_t		 opts;
220	int			 type;
221	int			 staticport;
222	struct pf_poolhashkey	*key;
223
224} pool_opts;
225
226struct redirspec {
227	struct redirection      *rdr;
228	struct pool_opts         pool_opts;
229	int			 binat;
230};
231
232struct filter_opts {
233	int			 marker;
234#define FOM_FLAGS	0x0001
235#define FOM_ICMP	0x0002
236#define FOM_TOS		0x0004
237#define FOM_KEEP	0x0008
238#define FOM_SRCTRACK	0x0010
239#define FOM_MINTTL	0x0020
240#define FOM_MAXMSS	0x0040
241#define FOM_SETTOS	0x0100
242#define FOM_SCRUB_TCP	0x0200
243	struct node_uid		*uid;
244	struct node_gid		*gid;
245	struct {
246		u_int8_t	 b1;
247		u_int8_t	 b2;
248		u_int16_t	 w;
249		u_int16_t	 w2;
250	} flags;
251	struct node_icmp	*icmpspec;
252	u_int32_t		 tos;
253	u_int32_t		 prob;
254	struct {
255		int			 action;
256		struct node_state_opt	*options;
257	} keep;
258	int			 fragment;
259	int			 allowopts;
260	char			*label;
261	struct node_qassign	 queues;
262	char			*tag;
263	char			*match_tag;
264	u_int8_t		 match_tag_not;
265	u_int			 rtableid;
266	struct {
267		struct node_host	*addr;
268		u_int16_t		port;
269	}			 divert, divert_packet;
270	struct redirspec	 nat;
271	struct redirspec	 rdr;
272	struct redirspec	 rroute;
273
274	/* scrub opts */
275	int			 nodf;
276	int			 minttl;
277	int			 settos;
278	int			 randomid;
279	int			 max_mss;
280
281	/* route opts */
282	struct {
283		struct node_host	*host;
284		u_int8_t		 rt;
285		u_int8_t		 pool_opts;
286		sa_family_t		 af;
287		struct pf_poolhashkey	*key;
288	}			 route;
289} filter_opts;
290
291struct antispoof_opts {
292	char			*label;
293	u_int			 rtableid;
294} antispoof_opts;
295
296struct scrub_opts {
297	int			marker;
298	int			nodf;
299	int			minttl;
300	int			maxmss;
301	int			settos;
302	int			randomid;
303	int			reassemble_tcp;
304} scrub_opts;
305
306struct queue_opts {
307	int			marker;
308#define QOM_BWSPEC	0x01
309#define QOM_SCHEDULER	0x02
310#define QOM_PRIORITY	0x04
311#define QOM_TBRSIZE	0x08
312#define QOM_QLIMIT	0x10
313	struct node_queue_bw	queue_bwspec;
314	struct node_queue_opt	scheduler;
315	int			priority;
316	int			tbrsize;
317	int			qlimit;
318} queue_opts;
319
320struct table_opts {
321	int			flags;
322	int			init_addr;
323	struct node_tinithead	init_nodes;
324} table_opts;
325
326struct node_hfsc_opts	 hfsc_opts;
327struct node_state_opt	*keep_state_defaults = NULL;
328
329int		 disallow_table(struct node_host *, const char *);
330int		 disallow_urpf_failed(struct node_host *, const char *);
331int		 disallow_alias(struct node_host *, const char *);
332int		 rule_consistent(struct pf_rule *, int);
333int		 process_tabledef(char *, struct table_opts *);
334void		 expand_label_str(char *, size_t, const char *, const char *);
335void		 expand_label_if(const char *, char *, size_t, const char *);
336void		 expand_label_addr(const char *, char *, size_t, u_int8_t,
337		    struct node_host *);
338void		 expand_label_port(const char *, char *, size_t,
339		    struct node_port *);
340void		 expand_label_proto(const char *, char *, size_t, u_int8_t);
341void		 expand_label_nr(const char *, char *, size_t);
342void		 expand_label(char *, size_t, const char *, u_int8_t,
343		    struct node_host *, struct node_port *, struct node_host *,
344		    struct node_port *, u_int8_t);
345int		 apply_redirspec(struct pf_pool *, struct pf_rule *,
346		    struct redirspec *, int, struct node_port *);
347void		 expand_rule(struct pf_rule *, int, struct node_if *,
348		    struct redirspec *, struct redirspec *, struct redirspec *,
349		    struct node_proto *,
350		    struct node_os *, struct node_host *, struct node_port *,
351		    struct node_host *, struct node_port *, struct node_uid *,
352		    struct node_gid *, struct node_icmp *, const char *);
353int		 expand_altq(struct pf_altq *, struct node_if *,
354		    struct node_queue *, struct node_queue_bw bwspec,
355		    struct node_queue_opt *);
356int		 expand_queue(struct pf_altq *, struct node_if *,
357		    struct node_queue *, struct node_queue_bw,
358		    struct node_queue_opt *);
359int		 expand_skip_interface(struct node_if *);
360
361int	 check_rulestate(int);
362int	 getservice(char *);
363int	 rule_label(struct pf_rule *, char *);
364
365void	 mv_rules(struct pf_ruleset *, struct pf_ruleset *);
366void	 decide_address_family(struct node_host *, sa_family_t *);
367void	 remove_invalid_hosts(struct node_host **, sa_family_t *);
368int	 invalid_redirect(struct node_host *, sa_family_t);
369u_int16_t parseicmpspec(char *, sa_family_t);
370int	 kw_casecmp(const void *, const void *);
371int	 map_tos(char *string, int *);
372
373TAILQ_HEAD(loadanchorshead, loadanchors)
374    loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
375
376struct loadanchors {
377	TAILQ_ENTRY(loadanchors)	 entries;
378	char				*anchorname;
379	char				*filename;
380};
381
382typedef struct {
383	union {
384		int64_t			 number;
385		double			 probability;
386		int			 i;
387		char			*string;
388		u_int			 rtableid;
389		struct {
390			u_int8_t	 b1;
391			u_int8_t	 b2;
392			u_int16_t	 w;
393			u_int16_t	 w2;
394		}			 b;
395		struct range		 range;
396		struct node_if		*interface;
397		struct node_proto	*proto;
398		struct node_icmp	*icmp;
399		struct node_host	*host;
400		struct node_os		*os;
401		struct node_port	*port;
402		struct node_uid		*uid;
403		struct node_gid		*gid;
404		struct node_state_opt	*state_opt;
405		struct peer		 peer;
406		struct {
407			struct peer	 src, dst;
408			struct node_os	*src_os;
409		}			 fromto;
410		struct redirection	*redirection;
411		struct {
412			int			 action;
413			struct node_state_opt	*options;
414		}			 keep_state;
415		struct {
416			u_int8_t	 log;
417			u_int8_t	 logif;
418			u_int8_t	 quick;
419		}			 logquick;
420		struct {
421			int		 neg;
422			char		*name;
423		}			 tagged;
424		struct pf_poolhashkey	*hashkey;
425		struct node_queue	*queue;
426		struct node_queue_opt	 queue_options;
427		struct node_queue_bw	 queue_bwspec;
428		struct node_qassign	 qassign;
429		struct filter_opts	 filter_opts;
430		struct antispoof_opts	 antispoof_opts;
431		struct queue_opts	 queue_opts;
432		struct scrub_opts	 scrub_opts;
433		struct table_opts	 table_opts;
434		struct pool_opts	 pool_opts;
435		struct node_hfsc_opts	 hfsc_opts;
436	} v;
437	int lineno;
438} YYSTYPE;
439
440#define PPORT_RANGE	1
441#define PPORT_STAR	2
442int	parseport(char *, struct range *r, int);
443
444#define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
445	(!((addr).iflags & PFI_AFLAG_NOALIAS) ||		 \
446	!isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
447
448%}
449
450%token	PASS BLOCK MATCH SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
451%token	RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
452%token	ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINATTO NODF
453%token	MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
454%token	NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
455%token	REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
456%token	SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY RANDOMID
457%token	REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
458%token	ANTISPOOF FOR INCLUDE
459%token	BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY
460%token	ALTQ CBQ PRIQ HFSC BANDWIDTH TBRSIZE LINKSHARE REALTIME UPPERLIMIT
461%token	QUEUE PRIORITY QLIMIT RTABLE
462%token	LOAD RULESET_OPTIMIZATION
463%token	STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
464%token	MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY PFLOW
465%token	TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS
466%token	DIVERTTO DIVERTREPLY DIVERTPACKET NATTO RDRTO
467%token	<v.string>		STRING
468%token	<v.number>		NUMBER
469%token	<v.i>			PORTBINARY
470%type	<v.interface>		interface if_list if_item_not if_item
471%type	<v.number>		number icmptype icmp6type uid gid
472%type	<v.number>		tos not yesno optnodf
473%type	<v.probability>		probability
474%type	<v.i>			dir af optimizer
475%type	<v.i>			sourcetrack flush unaryop statelock
476%type	<v.b>			action
477%type	<v.b>			flags flag blockspec
478%type	<v.range>		portplain portstar portrange
479%type	<v.hashkey>		hashkey
480%type	<v.proto>		proto proto_list proto_item
481%type	<v.number>		protoval
482%type	<v.icmp>		icmpspec
483%type	<v.icmp>		icmp_list icmp_item
484%type	<v.icmp>		icmp6_list icmp6_item
485%type	<v.number>		reticmpspec reticmp6spec
486%type	<v.fromto>		fromto
487%type	<v.peer>		ipportspec from to
488%type	<v.host>		ipspec xhost host dynaddr host_list
489%type	<v.host>		redir_host_list redirspec
490%type	<v.host>		route_host route_host_list routespec
491%type	<v.os>			os xos os_list
492%type	<v.port>		portspec port_list port_item
493%type	<v.uid>			uids uid_list uid_item
494%type	<v.gid>			gids gid_list gid_item
495%type	<v.redirection>		redirpool
496%type	<v.string>		label stringall anchorname
497%type	<v.string>		string varstring numberstring
498%type	<v.keep_state>		keep
499%type	<v.state_opt>		state_opt_spec state_opt_list state_opt_item
500%type	<v.logquick>		logquick quick log logopts logopt
501%type	<v.interface>		antispoof_ifspc antispoof_iflst antispoof_if
502%type	<v.qassign>		qname
503%type	<v.queue>		qassign qassign_list qassign_item
504%type	<v.queue_options>	scheduler
505%type	<v.number>		cbqflags_list cbqflags_item
506%type	<v.number>		priqflags_list priqflags_item
507%type	<v.hfsc_opts>		hfscopts_list hfscopts_item hfsc_opts
508%type	<v.queue_bwspec>	bandwidth
509%type	<v.filter_opts>		filter_opts filter_opt filter_opts_l
510%type	<v.antispoof_opts>	antispoof_opts antispoof_opt antispoof_opts_l
511%type	<v.queue_opts>		queue_opts queue_opt queue_opts_l
512%type	<v.scrub_opts>		scrub_opts scrub_opt scrub_opts_l
513%type	<v.table_opts>		table_opts table_opt table_opts_l
514%type	<v.pool_opts>		pool_opts pool_opt pool_opts_l
515%%
516
517ruleset		: /* empty */
518		| ruleset include '\n'
519		| ruleset '\n'
520		| ruleset option '\n'
521		| ruleset pfrule '\n'
522		| ruleset anchorrule '\n'
523		| ruleset loadrule '\n'
524		| ruleset altqif '\n'
525		| ruleset queuespec '\n'
526		| ruleset varset '\n'
527		| ruleset antispoof '\n'
528		| ruleset tabledef '\n'
529		| '{' fakeanchor '}' '\n';
530		| ruleset error '\n'		{ file->errors++; }
531		;
532
533include		: INCLUDE STRING		{
534			struct file	*nfile;
535
536			if ((nfile = pushfile($2, 0)) == NULL) {
537				yyerror("failed to include file %s", $2);
538				free($2);
539				YYERROR;
540			}
541			free($2);
542
543			file = nfile;
544			lungetc('\n');
545		}
546		;
547
548/*
549 * apply to previouslys specified rule: must be careful to note
550 * what that is: pf or nat or binat or rdr
551 */
552fakeanchor	: fakeanchor '\n'
553		| fakeanchor anchorrule '\n'
554		| fakeanchor pfrule '\n'
555		| fakeanchor error '\n'
556		;
557
558optimizer	: string	{
559			if (!strcmp($1, "none"))
560				$$ = 0;
561			else if (!strcmp($1, "basic"))
562				$$ = PF_OPTIMIZE_BASIC;
563			else if (!strcmp($1, "profile"))
564				$$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
565			else {
566				yyerror("unknown ruleset-optimization %s", $1);
567				YYERROR;
568			}
569		}
570		;
571
572optnodf		: /* empty */	{ $$ = 0; }
573		| NODF		{ $$ = 1; }
574		;
575
576option		: SET REASSEMBLE yesno optnodf		{
577			if (check_rulestate(PFCTL_STATE_OPTION))
578				YYERROR;
579			pfctl_set_reassembly(pf, $3, $4);
580		}
581		| SET OPTIMIZATION STRING		{
582			if (check_rulestate(PFCTL_STATE_OPTION)) {
583				free($3);
584				YYERROR;
585			}
586			if (pfctl_set_optimization(pf, $3) != 0) {
587				yyerror("unknown optimization %s", $3);
588				free($3);
589				YYERROR;
590			}
591			free($3);
592		}
593		| SET RULESET_OPTIMIZATION optimizer {
594			if (!(pf->opts & PF_OPT_OPTIMIZE)) {
595				pf->opts |= PF_OPT_OPTIMIZE;
596				pf->optimize = $3;
597			}
598		}
599		| SET TIMEOUT timeout_spec
600		| SET TIMEOUT '{' optnl timeout_list '}'
601		| SET LIMIT limit_spec
602		| SET LIMIT '{' optnl limit_list '}'
603		| SET LOGINTERFACE stringall		{
604			if (check_rulestate(PFCTL_STATE_OPTION)) {
605				free($3);
606				YYERROR;
607			}
608			if (pfctl_set_logif(pf, $3) != 0) {
609				yyerror("error setting loginterface %s", $3);
610				free($3);
611				YYERROR;
612			}
613			free($3);
614		}
615		| SET HOSTID number {
616			if ($3 == 0 || $3 > UINT_MAX) {
617				yyerror("hostid must be non-zero");
618				YYERROR;
619			}
620			if (pfctl_set_hostid(pf, $3) != 0) {
621				yyerror("error setting hostid %08x", $3);
622				YYERROR;
623			}
624		}
625		| SET BLOCKPOLICY DROP	{
626			if (pf->opts & PF_OPT_VERBOSE)
627				printf("set block-policy drop\n");
628			if (check_rulestate(PFCTL_STATE_OPTION))
629				YYERROR;
630			blockpolicy = PFRULE_DROP;
631		}
632		| SET BLOCKPOLICY RETURN {
633			if (pf->opts & PF_OPT_VERBOSE)
634				printf("set block-policy return\n");
635			if (check_rulestate(PFCTL_STATE_OPTION))
636				YYERROR;
637			blockpolicy = PFRULE_RETURN;
638		}
639		| SET REQUIREORDER yesno {
640			if (pf->opts & PF_OPT_VERBOSE)
641				printf("set require-order %s\n",
642				    $3 == 1 ? "yes" : "no");
643			require_order = $3;
644		}
645		| SET FINGERPRINTS STRING {
646			if (pf->opts & PF_OPT_VERBOSE)
647				printf("set fingerprints \"%s\"\n", $3);
648			if (check_rulestate(PFCTL_STATE_OPTION)) {
649				free($3);
650				YYERROR;
651			}
652			if (!pf->anchor->name[0]) {
653				if (pfctl_file_fingerprints(pf->dev,
654				    pf->opts, $3)) {
655					yyerror("error loading "
656					    "fingerprints %s", $3);
657					free($3);
658					YYERROR;
659				}
660			}
661			free($3);
662		}
663		| SET STATEPOLICY statelock {
664			if (pf->opts & PF_OPT_VERBOSE)
665				switch ($3) {
666				case 0:
667					printf("set state-policy floating\n");
668					break;
669				case PFRULE_IFBOUND:
670					printf("set state-policy if-bound\n");
671					break;
672				}
673			default_statelock = $3;
674		}
675		| SET DEBUG STRING {
676			if (check_rulestate(PFCTL_STATE_OPTION)) {
677				free($3);
678				YYERROR;
679			}
680			if (pfctl_set_debug(pf, $3) != 0) {
681				yyerror("error setting debuglevel %s", $3);
682				free($3);
683				YYERROR;
684			}
685			free($3);
686		}
687		| SET SKIP interface {
688			if (expand_skip_interface($3) != 0) {
689				yyerror("error setting skip interface(s)");
690				YYERROR;
691			}
692		}
693		| SET STATEDEFAULTS state_opt_list {
694			if (keep_state_defaults != NULL) {
695				yyerror("cannot redefine state-defaults");
696				YYERROR;
697			}
698			keep_state_defaults = $3;
699		}
700		;
701
702stringall	: STRING	{ $$ = $1; }
703		| ALL		{
704			if (($$ = strdup("all")) == NULL) {
705				err(1, "stringall: strdup");
706			}
707		}
708		;
709
710string		: STRING string				{
711			if (asprintf(&$$, "%s %s", $1, $2) == -1)
712				err(1, "string: asprintf");
713			free($1);
714			free($2);
715		}
716		| STRING
717		;
718
719varstring	: numberstring varstring 		{
720			if (asprintf(&$$, "%s %s", $1, $2) == -1)
721				err(1, "string: asprintf");
722			free($1);
723			free($2);
724		}
725		| numberstring
726		;
727
728numberstring	: NUMBER				{
729			char	*s;
730			if (asprintf(&s, "%lld", $1) == -1) {
731				yyerror("string: asprintf");
732				YYERROR;
733			}
734			$$ = s;
735		}
736		| STRING
737		;
738
739varset		: STRING '=' varstring	{
740			if (pf->opts & PF_OPT_VERBOSE)
741				printf("%s = \"%s\"\n", $1, $3);
742			if (symset($1, $3, 0) == -1)
743				err(1, "cannot store variable %s", $1);
744			free($1);
745			free($3);
746		}
747		;
748
749anchorname	: STRING			{ $$ = $1; }
750		| /* empty */			{ $$ = NULL; }
751		;
752
753pfa_anchorlist	: /* empty */
754		| pfa_anchorlist '\n'
755		| pfa_anchorlist pfrule '\n'
756		| pfa_anchorlist anchorrule '\n'
757		;
758
759pfa_anchor	: '{'
760		{
761			char ta[PF_ANCHOR_NAME_SIZE];
762			struct pf_ruleset *rs;
763
764			/* steping into a brace anchor */
765			pf->asd++;
766			pf->bn++;
767			pf->brace = 1;
768
769			/* create a holding ruleset in the root */
770			snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
771			rs = pf_find_or_create_ruleset(ta);
772			if (rs == NULL)
773				err(1, "pfa_anchor: pf_find_or_create_ruleset");
774			pf->astack[pf->asd] = rs->anchor;
775			pf->anchor = rs->anchor;
776		} '\n' pfa_anchorlist '}'
777		{
778			pf->alast = pf->anchor;
779			pf->asd--;
780			pf->anchor = pf->astack[pf->asd];
781		}
782		| /* empty */
783		;
784
785anchorrule	: ANCHOR anchorname dir quick interface af proto fromto
786		    filter_opts pfa_anchor
787		{
788			struct pf_rule	r;
789			struct node_proto	*proto;
790
791			if (check_rulestate(PFCTL_STATE_FILTER)) {
792				if ($2)
793					free($2);
794				YYERROR;
795			}
796
797			if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
798				free($2);
799				yyerror("anchor names beginning with '_' "
800				    "are reserved for internal use");
801				YYERROR;
802			}
803
804			memset(&r, 0, sizeof(r));
805			if (pf->astack[pf->asd + 1]) {
806				/* move inline rules into relative location */
807				pf_anchor_setup(&r,
808				    &pf->astack[pf->asd]->ruleset,
809				    $2 ? $2 : pf->alast->name);
810
811				if (r.anchor == NULL)
812					err(1, "anchorrule: unable to "
813					    "create ruleset");
814
815				if (pf->alast != r.anchor) {
816					if (r.anchor->match) {
817						yyerror("inline anchor '%s' "
818						    "already exists",
819						    r.anchor->name);
820						YYERROR;
821					}
822					mv_rules(&pf->alast->ruleset,
823					    &r.anchor->ruleset);
824				}
825				pf_remove_if_empty_ruleset(&pf->alast->ruleset);
826				pf->alast = r.anchor;
827			} else {
828				if (!$2) {
829					yyerror("anchors without explicit "
830					    "rules must specify a name");
831					YYERROR;
832				}
833			}
834			r.direction = $3;
835			r.quick = $4.quick;
836			r.af = $6;
837			r.prob = $9.prob;
838			r.rtableid = $9.rtableid;
839
840			if ($9.tag)
841				if (strlcpy(r.tagname, $9.tag,
842				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
843					yyerror("tag too long, max %u chars",
844					    PF_TAG_NAME_SIZE - 1);
845					YYERROR;
846				}
847			if ($9.match_tag)
848				if (strlcpy(r.match_tagname, $9.match_tag,
849				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
850					yyerror("tag too long, max %u chars",
851					    PF_TAG_NAME_SIZE - 1);
852					YYERROR;
853				}
854			r.match_tag_not = $9.match_tag_not;
855			if (rule_label(&r, $9.label))
856				YYERROR;
857			free($9.label);
858			r.flags = $9.flags.b1;
859			r.flagset = $9.flags.b2;
860			if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
861				yyerror("flags always false");
862				YYERROR;
863			}
864			if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
865				for (proto = $7; proto != NULL &&
866				    proto->proto != IPPROTO_TCP;
867				    proto = proto->next)
868					;	/* nothing */
869				if (proto == NULL && $7 != NULL) {
870					if ($9.flags.b1 || $9.flags.b2)
871						yyerror(
872						    "flags only apply to tcp");
873					if ($8.src_os)
874						yyerror(
875						    "OS fingerprinting only "
876						    "applies to tcp");
877					YYERROR;
878				}
879			}
880
881			r.tos = $9.tos;
882
883			if ($9.keep.action) {
884				yyerror("cannot specify state handling "
885				    "on anchors");
886				YYERROR;
887			}
888
889			if ($9.route.rt) {
890				yyerror("cannot specify route handling "
891				    "on anchors");
892				YYERROR;
893			}
894
895			if ($9.match_tag)
896				if (strlcpy(r.match_tagname, $9.match_tag,
897				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
898					yyerror("tag too long, max %u chars",
899					    PF_TAG_NAME_SIZE - 1);
900					YYERROR;
901				}
902			r.match_tag_not = $9.match_tag_not;
903
904			decide_address_family($8.src.host, &r.af);
905			decide_address_family($8.dst.host, &r.af);
906
907			expand_rule(&r, 0, $5, NULL, NULL, NULL, $7, $8.src_os,
908			    $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
909			    $9.uid, $9.gid, $9.icmpspec,
910			    pf->astack[pf->asd + 1] ? pf->alast->name : $2);
911			free($2);
912			pf->astack[pf->asd + 1] = NULL;
913		}
914		;
915
916loadrule	: LOAD ANCHOR string FROM string	{
917			struct loadanchors	*loadanchor;
918
919			if (strlen(pf->anchor->name) + 1 +
920			    strlen($3) >= MAXPATHLEN) {
921				yyerror("anchorname %s too long, max %u\n",
922				    $3, MAXPATHLEN - 1);
923				free($3);
924				YYERROR;
925			}
926			loadanchor = calloc(1, sizeof(struct loadanchors));
927			if (loadanchor == NULL)
928				err(1, "loadrule: calloc");
929			if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
930			    NULL)
931				err(1, "loadrule: malloc");
932			if (pf->anchor->name[0])
933				snprintf(loadanchor->anchorname, MAXPATHLEN,
934				    "%s/%s", pf->anchor->name, $3);
935			else
936				strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
937			if ((loadanchor->filename = strdup($5)) == NULL)
938				err(1, "loadrule: strdup");
939
940			TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
941			    entries);
942
943			free($3);
944			free($5);
945		};
946
947scrub_opts	:	{
948				bzero(&scrub_opts, sizeof scrub_opts);
949			}
950		    scrub_opts_l
951			{ $$ = scrub_opts; }
952		;
953
954scrub_opts_l	: scrub_opts_l comma scrub_opt
955		| scrub_opt
956		;
957
958scrub_opt	: NODF	{
959			if (scrub_opts.nodf) {
960				yyerror("no-df cannot be respecified");
961				YYERROR;
962			}
963			scrub_opts.nodf = 1;
964		}
965		| MINTTL NUMBER {
966			if (scrub_opts.marker & FOM_MINTTL) {
967				yyerror("min-ttl cannot be respecified");
968				YYERROR;
969			}
970			if ($2 < 0 || $2 > 255) {
971				yyerror("illegal min-ttl value %d", $2);
972				YYERROR;
973			}
974			scrub_opts.marker |= FOM_MINTTL;
975			scrub_opts.minttl = $2;
976		}
977		| MAXMSS NUMBER {
978			if (scrub_opts.marker & FOM_MAXMSS) {
979				yyerror("max-mss cannot be respecified");
980				YYERROR;
981			}
982			if ($2 < 0 || $2 > 65535) {
983				yyerror("illegal max-mss value %d", $2);
984				YYERROR;
985			}
986			scrub_opts.marker |= FOM_MAXMSS;
987			scrub_opts.maxmss = $2;
988		}
989		| SETTOS tos {
990			if (scrub_opts.marker & FOM_SETTOS) {
991				yyerror("set-tos cannot be respecified");
992				YYERROR;
993			}
994			scrub_opts.marker |= FOM_SETTOS;
995			scrub_opts.settos = $2;
996		}
997		| REASSEMBLE STRING {
998			if (strcasecmp($2, "tcp") != 0) {
999				yyerror("scrub reassemble supports only tcp, "
1000				    "not '%s'", $2);
1001				free($2);
1002				YYERROR;
1003			}
1004			free($2);
1005			if (scrub_opts.reassemble_tcp) {
1006				yyerror("reassemble tcp cannot be respecified");
1007				YYERROR;
1008			}
1009			scrub_opts.reassemble_tcp = 1;
1010		}
1011		| RANDOMID {
1012			if (scrub_opts.randomid) {
1013				yyerror("random-id cannot be respecified");
1014				YYERROR;
1015			}
1016			scrub_opts.randomid = 1;
1017		}
1018		;
1019
1020antispoof	: ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1021			struct pf_rule		 r;
1022			struct node_host	*h = NULL, *hh;
1023			struct node_if		*i, *j;
1024
1025			if (check_rulestate(PFCTL_STATE_FILTER))
1026				YYERROR;
1027
1028			for (i = $3; i; i = i->next) {
1029				bzero(&r, sizeof(r));
1030
1031				r.action = PF_DROP;
1032				r.direction = PF_IN;
1033				r.log = $2.log;
1034				r.logif = $2.logif;
1035				r.quick = $2.quick;
1036				r.af = $4;
1037				if (rule_label(&r, $5.label))
1038					YYERROR;
1039				r.rtableid = $5.rtableid;
1040				j = calloc(1, sizeof(struct node_if));
1041				if (j == NULL)
1042					err(1, "antispoof: calloc");
1043				if (strlcpy(j->ifname, i->ifname,
1044				    sizeof(j->ifname)) >= sizeof(j->ifname)) {
1045					free(j);
1046					yyerror("interface name too long");
1047					YYERROR;
1048				}
1049				j->not = 1;
1050				if (i->dynamic) {
1051					h = calloc(1, sizeof(*h));
1052					if (h == NULL)
1053						err(1, "address: calloc");
1054					h->addr.type = PF_ADDR_DYNIFTL;
1055					set_ipmask(h, 128);
1056					if (strlcpy(h->addr.v.ifname, i->ifname,
1057					    sizeof(h->addr.v.ifname)) >=
1058					    sizeof(h->addr.v.ifname)) {
1059						free(h);
1060						yyerror(
1061						    "interface name too long");
1062						YYERROR;
1063					}
1064					hh = malloc(sizeof(*hh));
1065					if (hh == NULL)
1066						 err(1, "address: malloc");
1067					bcopy(h, hh, sizeof(*hh));
1068					h->addr.iflags = PFI_AFLAG_NETWORK;
1069				} else {
1070					h = ifa_lookup(j->ifname,
1071					    PFI_AFLAG_NETWORK);
1072					hh = NULL;
1073				}
1074
1075				if (h != NULL)
1076					expand_rule(&r, 0, j, NULL, NULL, NULL,
1077					    NULL, NULL, h, NULL, NULL, NULL,
1078					    NULL, NULL, NULL, "");
1079
1080				if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1081					bzero(&r, sizeof(r));
1082
1083					r.action = PF_DROP;
1084					r.direction = PF_IN;
1085					r.log = $2.log;
1086					r.logif = $2.logif;
1087					r.quick = $2.quick;
1088					r.af = $4;
1089					if (rule_label(&r, $5.label))
1090						YYERROR;
1091					r.rtableid = $5.rtableid;
1092					if (hh != NULL)
1093						h = hh;
1094					else
1095						h = ifa_lookup(i->ifname, 0);
1096					if (h != NULL)
1097						expand_rule(&r, 0, NULL, NULL,
1098						    NULL, NULL, NULL, NULL, h,
1099						    NULL, NULL, NULL, NULL,
1100						    NULL, NULL, "");
1101				} else
1102					free(hh);
1103			}
1104			free($5.label);
1105		}
1106		;
1107
1108antispoof_ifspc	: FOR antispoof_if			{ $$ = $2; }
1109		| FOR '{' optnl antispoof_iflst '}'	{ $$ = $4; }
1110		;
1111
1112antispoof_iflst	: antispoof_if optnl			{ $$ = $1; }
1113		| antispoof_iflst comma antispoof_if optnl {
1114			$1->tail->next = $3;
1115			$1->tail = $3;
1116			$$ = $1;
1117		}
1118		;
1119
1120antispoof_if	: if_item				{ $$ = $1; }
1121		| '(' if_item ')'			{
1122			$2->dynamic = 1;
1123			$$ = $2;
1124		}
1125		;
1126
1127antispoof_opts	:	{
1128				bzero(&antispoof_opts, sizeof antispoof_opts);
1129				antispoof_opts.rtableid = -1;
1130			}
1131		    antispoof_opts_l
1132			{ $$ = antispoof_opts; }
1133		| /* empty */	{
1134			bzero(&antispoof_opts, sizeof antispoof_opts);
1135			antispoof_opts.rtableid = -1;
1136			$$ = antispoof_opts;
1137		}
1138		;
1139
1140antispoof_opts_l	: antispoof_opts_l antispoof_opt
1141			| antispoof_opt
1142			;
1143
1144antispoof_opt	: label	{
1145			if (antispoof_opts.label) {
1146				yyerror("label cannot be redefined");
1147				YYERROR;
1148			}
1149			antispoof_opts.label = $1;
1150		}
1151		| RTABLE NUMBER				{
1152			if ($2 < 0 || $2 > RT_TABLEID_MAX) {
1153				yyerror("invalid rtable id");
1154				YYERROR;
1155			}
1156			antispoof_opts.rtableid = $2;
1157		}
1158		;
1159
1160not		: '!'		{ $$ = 1; }
1161		| /* empty */	{ $$ = 0; }
1162		;
1163
1164tabledef	: TABLE '<' STRING '>' table_opts {
1165			struct node_host	 *h, *nh;
1166			struct node_tinit	 *ti, *nti;
1167
1168			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1169				yyerror("table name too long, max %d chars",
1170				    PF_TABLE_NAME_SIZE - 1);
1171				free($3);
1172				YYERROR;
1173			}
1174			if (pf->loadopt & PFCTL_FLAG_TABLE)
1175				if (process_tabledef($3, &$5)) {
1176					free($3);
1177					YYERROR;
1178				}
1179			free($3);
1180			for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1181			    ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1182				if (ti->file)
1183					free(ti->file);
1184				for (h = ti->host; h != NULL; h = nh) {
1185					nh = h->next;
1186					free(h);
1187				}
1188				nti = SIMPLEQ_NEXT(ti, entries);
1189				free(ti);
1190			}
1191		}
1192		;
1193
1194table_opts	:	{
1195			bzero(&table_opts, sizeof table_opts);
1196			SIMPLEQ_INIT(&table_opts.init_nodes);
1197		}
1198		    table_opts_l
1199			{ $$ = table_opts; }
1200		| /* empty */
1201			{
1202			bzero(&table_opts, sizeof table_opts);
1203			SIMPLEQ_INIT(&table_opts.init_nodes);
1204			$$ = table_opts;
1205		}
1206		;
1207
1208table_opts_l	: table_opts_l table_opt
1209		| table_opt
1210		;
1211
1212table_opt	: STRING		{
1213			if (!strcmp($1, "const"))
1214				table_opts.flags |= PFR_TFLAG_CONST;
1215			else if (!strcmp($1, "persist"))
1216				table_opts.flags |= PFR_TFLAG_PERSIST;
1217			else if (!strcmp($1, "counters"))
1218				table_opts.flags |= PFR_TFLAG_COUNTERS;
1219			else {
1220				yyerror("invalid table option '%s'", $1);
1221				free($1);
1222				YYERROR;
1223			}
1224			free($1);
1225		}
1226		| '{' optnl '}'		{ table_opts.init_addr = 1; }
1227		| '{' optnl host_list '}'	{
1228			struct node_host	*n;
1229			struct node_tinit	*ti;
1230
1231			for (n = $3; n != NULL; n = n->next) {
1232				switch (n->addr.type) {
1233				case PF_ADDR_ADDRMASK:
1234					continue; /* ok */
1235				case PF_ADDR_RANGE:
1236					yyerror("address ranges are not "
1237					    "permitted inside tables");
1238					break;
1239				case PF_ADDR_DYNIFTL:
1240					yyerror("dynamic addresses are not "
1241					    "permitted inside tables");
1242					break;
1243				case PF_ADDR_TABLE:
1244					yyerror("tables cannot contain tables");
1245					break;
1246				case PF_ADDR_NOROUTE:
1247					yyerror("\"no-route\" is not permitted "
1248					    "inside tables");
1249					break;
1250				case PF_ADDR_URPFFAILED:
1251					yyerror("\"urpf-failed\" is not "
1252					    "permitted inside tables");
1253					break;
1254				default:
1255					yyerror("unknown address type %d",
1256					    n->addr.type);
1257				}
1258				YYERROR;
1259			}
1260			if (!(ti = calloc(1, sizeof(*ti))))
1261				err(1, "table_opt: calloc");
1262			ti->host = $3;
1263			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1264			    entries);
1265			table_opts.init_addr = 1;
1266		}
1267		| FILENAME STRING	{
1268			struct node_tinit	*ti;
1269
1270			if (!(ti = calloc(1, sizeof(*ti))))
1271				err(1, "table_opt: calloc");
1272			ti->file = $2;
1273			SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1274			    entries);
1275			table_opts.init_addr = 1;
1276		}
1277		;
1278
1279altqif		: ALTQ interface queue_opts QUEUE qassign {
1280			struct pf_altq	a;
1281
1282			if (check_rulestate(PFCTL_STATE_QUEUE))
1283				YYERROR;
1284
1285			memset(&a, 0, sizeof(a));
1286			if ($3.scheduler.qtype == ALTQT_NONE) {
1287				yyerror("no scheduler specified!");
1288				YYERROR;
1289			}
1290			a.scheduler = $3.scheduler.qtype;
1291			a.qlimit = $3.qlimit;
1292			a.tbrsize = $3.tbrsize;
1293			if ($5 == NULL) {
1294				yyerror("no child queues specified");
1295				YYERROR;
1296			}
1297			if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1298			    &$3.scheduler))
1299				YYERROR;
1300		}
1301		;
1302
1303queuespec	: QUEUE STRING interface queue_opts qassign {
1304			struct pf_altq	a;
1305
1306			if (check_rulestate(PFCTL_STATE_QUEUE)) {
1307				free($2);
1308				YYERROR;
1309			}
1310
1311			memset(&a, 0, sizeof(a));
1312
1313			if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1314			    sizeof(a.qname)) {
1315				yyerror("queue name too long (max "
1316				    "%d chars)", PF_QNAME_SIZE-1);
1317				free($2);
1318				YYERROR;
1319			}
1320			free($2);
1321			if ($4.tbrsize) {
1322				yyerror("cannot specify tbrsize for queue");
1323				YYERROR;
1324			}
1325			if ($4.priority > 255) {
1326				yyerror("priority out of range: max 255");
1327				YYERROR;
1328			}
1329			a.priority = $4.priority;
1330			a.qlimit = $4.qlimit;
1331			a.scheduler = $4.scheduler.qtype;
1332			if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1333			    &$4.scheduler)) {
1334				yyerror("errors in queue definition");
1335				YYERROR;
1336			}
1337		}
1338		;
1339
1340queue_opts	:	{
1341			bzero(&queue_opts, sizeof queue_opts);
1342			queue_opts.priority = DEFAULT_PRIORITY;
1343			queue_opts.qlimit = DEFAULT_QLIMIT;
1344			queue_opts.scheduler.qtype = ALTQT_NONE;
1345			queue_opts.queue_bwspec.bw_percent = 100;
1346		}
1347		    queue_opts_l
1348			{ $$ = queue_opts; }
1349		| /* empty */ {
1350			bzero(&queue_opts, sizeof queue_opts);
1351			queue_opts.priority = DEFAULT_PRIORITY;
1352			queue_opts.qlimit = DEFAULT_QLIMIT;
1353			queue_opts.scheduler.qtype = ALTQT_NONE;
1354			queue_opts.queue_bwspec.bw_percent = 100;
1355			$$ = queue_opts;
1356		}
1357		;
1358
1359queue_opts_l	: queue_opts_l queue_opt
1360		| queue_opt
1361		;
1362
1363queue_opt	: BANDWIDTH bandwidth	{
1364			if (queue_opts.marker & QOM_BWSPEC) {
1365				yyerror("bandwidth cannot be respecified");
1366				YYERROR;
1367			}
1368			queue_opts.marker |= QOM_BWSPEC;
1369			queue_opts.queue_bwspec = $2;
1370		}
1371		| PRIORITY NUMBER	{
1372			if (queue_opts.marker & QOM_PRIORITY) {
1373				yyerror("priority cannot be respecified");
1374				YYERROR;
1375			}
1376			if ($2 < 0 || $2 > 255) {
1377				yyerror("priority out of range: max 255");
1378				YYERROR;
1379			}
1380			queue_opts.marker |= QOM_PRIORITY;
1381			queue_opts.priority = $2;
1382		}
1383		| QLIMIT NUMBER	{
1384			if (queue_opts.marker & QOM_QLIMIT) {
1385				yyerror("qlimit cannot be respecified");
1386				YYERROR;
1387			}
1388			if ($2 < 0 || $2 > 65535) {
1389				yyerror("qlimit out of range: max 65535");
1390				YYERROR;
1391			}
1392			queue_opts.marker |= QOM_QLIMIT;
1393			queue_opts.qlimit = $2;
1394		}
1395		| scheduler	{
1396			if (queue_opts.marker & QOM_SCHEDULER) {
1397				yyerror("scheduler cannot be respecified");
1398				YYERROR;
1399			}
1400			queue_opts.marker |= QOM_SCHEDULER;
1401			queue_opts.scheduler = $1;
1402		}
1403		| TBRSIZE NUMBER	{
1404			if (queue_opts.marker & QOM_TBRSIZE) {
1405				yyerror("tbrsize cannot be respecified");
1406				YYERROR;
1407			}
1408			if ($2 < 0 || $2 > 65535) {
1409				yyerror("tbrsize too big: max 65535");
1410				YYERROR;
1411			}
1412			queue_opts.marker |= QOM_TBRSIZE;
1413			queue_opts.tbrsize = $2;
1414		}
1415		;
1416
1417bandwidth	: STRING {
1418			double	 bps;
1419			char	*cp;
1420
1421			$$.bw_percent = 0;
1422
1423			bps = strtod($1, &cp);
1424			if (cp != NULL) {
1425				if (!strcmp(cp, "b"))
1426					; /* nothing */
1427				else if (!strcmp(cp, "Kb"))
1428					bps *= 1000;
1429				else if (!strcmp(cp, "Mb"))
1430					bps *= 1000 * 1000;
1431				else if (!strcmp(cp, "Gb"))
1432					bps *= 1000 * 1000 * 1000;
1433				else if (!strcmp(cp, "%")) {
1434					if (bps < 0 || bps > 100) {
1435						yyerror("bandwidth spec "
1436						    "out of range");
1437						free($1);
1438						YYERROR;
1439					}
1440					$$.bw_percent = bps;
1441					bps = 0;
1442				} else {
1443					yyerror("unknown unit %s", cp);
1444					free($1);
1445					YYERROR;
1446				}
1447			}
1448			free($1);
1449			$$.bw_absolute = (u_int32_t)bps;
1450		}
1451		| NUMBER {
1452			if ($1 < 0 || $1 > UINT_MAX) {
1453				yyerror("bandwidth number too big");
1454				YYERROR;
1455			}
1456			$$.bw_percent = 0;
1457			$$.bw_absolute = $1;
1458		}
1459		;
1460
1461scheduler	: CBQ				{
1462			$$.qtype = ALTQT_CBQ;
1463			$$.data.cbq_opts.flags = 0;
1464		}
1465		| CBQ '(' cbqflags_list ')'	{
1466			$$.qtype = ALTQT_CBQ;
1467			$$.data.cbq_opts.flags = $3;
1468		}
1469		| PRIQ				{
1470			$$.qtype = ALTQT_PRIQ;
1471			$$.data.priq_opts.flags = 0;
1472		}
1473		| PRIQ '(' priqflags_list ')'	{
1474			$$.qtype = ALTQT_PRIQ;
1475			$$.data.priq_opts.flags = $3;
1476		}
1477		| HFSC				{
1478			$$.qtype = ALTQT_HFSC;
1479			bzero(&$$.data.hfsc_opts,
1480			    sizeof(struct node_hfsc_opts));
1481		}
1482		| HFSC '(' hfsc_opts ')'	{
1483			$$.qtype = ALTQT_HFSC;
1484			$$.data.hfsc_opts = $3;
1485		}
1486		;
1487
1488cbqflags_list	: cbqflags_item				{ $$ |= $1; }
1489		| cbqflags_list comma cbqflags_item	{ $$ |= $3; }
1490		;
1491
1492cbqflags_item	: STRING	{
1493			if (!strcmp($1, "default"))
1494				$$ = CBQCLF_DEFCLASS;
1495			else if (!strcmp($1, "borrow"))
1496				$$ = CBQCLF_BORROW;
1497			else if (!strcmp($1, "red"))
1498				$$ = CBQCLF_RED;
1499			else if (!strcmp($1, "ecn"))
1500				$$ = CBQCLF_RED|CBQCLF_ECN;
1501			else if (!strcmp($1, "rio"))
1502				$$ = CBQCLF_RIO;
1503			else {
1504				yyerror("unknown cbq flag \"%s\"", $1);
1505				free($1);
1506				YYERROR;
1507			}
1508			free($1);
1509		}
1510		;
1511
1512priqflags_list	: priqflags_item			{ $$ |= $1; }
1513		| priqflags_list comma priqflags_item	{ $$ |= $3; }
1514		;
1515
1516priqflags_item	: STRING	{
1517			if (!strcmp($1, "default"))
1518				$$ = PRCF_DEFAULTCLASS;
1519			else if (!strcmp($1, "red"))
1520				$$ = PRCF_RED;
1521			else if (!strcmp($1, "ecn"))
1522				$$ = PRCF_RED|PRCF_ECN;
1523			else if (!strcmp($1, "rio"))
1524				$$ = PRCF_RIO;
1525			else {
1526				yyerror("unknown priq flag \"%s\"", $1);
1527				free($1);
1528				YYERROR;
1529			}
1530			free($1);
1531		}
1532		;
1533
1534hfsc_opts	:	{
1535				bzero(&hfsc_opts,
1536				    sizeof(struct node_hfsc_opts));
1537			}
1538		    hfscopts_list				{
1539			$$ = hfsc_opts;
1540		}
1541		;
1542
1543hfscopts_list	: hfscopts_item
1544		| hfscopts_list comma hfscopts_item
1545		;
1546
1547hfscopts_item	: LINKSHARE bandwidth				{
1548			if (hfsc_opts.linkshare.used) {
1549				yyerror("linkshare already specified");
1550				YYERROR;
1551			}
1552			hfsc_opts.linkshare.m2 = $2;
1553			hfsc_opts.linkshare.used = 1;
1554		}
1555		| LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')'
1556		    {
1557			if ($5 < 0 || $5 > INT_MAX) {
1558				yyerror("timing in curve out of range");
1559				YYERROR;
1560			}
1561			if (hfsc_opts.linkshare.used) {
1562				yyerror("linkshare already specified");
1563				YYERROR;
1564			}
1565			hfsc_opts.linkshare.m1 = $3;
1566			hfsc_opts.linkshare.d = $5;
1567			hfsc_opts.linkshare.m2 = $7;
1568			hfsc_opts.linkshare.used = 1;
1569		}
1570		| REALTIME bandwidth				{
1571			if (hfsc_opts.realtime.used) {
1572				yyerror("realtime already specified");
1573				YYERROR;
1574			}
1575			hfsc_opts.realtime.m2 = $2;
1576			hfsc_opts.realtime.used = 1;
1577		}
1578		| REALTIME '(' bandwidth comma NUMBER comma bandwidth ')'
1579		    {
1580			if ($5 < 0 || $5 > INT_MAX) {
1581				yyerror("timing in curve out of range");
1582				YYERROR;
1583			}
1584			if (hfsc_opts.realtime.used) {
1585				yyerror("realtime already specified");
1586				YYERROR;
1587			}
1588			hfsc_opts.realtime.m1 = $3;
1589			hfsc_opts.realtime.d = $5;
1590			hfsc_opts.realtime.m2 = $7;
1591			hfsc_opts.realtime.used = 1;
1592		}
1593		| UPPERLIMIT bandwidth				{
1594			if (hfsc_opts.upperlimit.used) {
1595				yyerror("upperlimit already specified");
1596				YYERROR;
1597			}
1598			hfsc_opts.upperlimit.m2 = $2;
1599			hfsc_opts.upperlimit.used = 1;
1600		}
1601		| UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')'
1602		    {
1603			if ($5 < 0 || $5 > INT_MAX) {
1604				yyerror("timing in curve out of range");
1605				YYERROR;
1606			}
1607			if (hfsc_opts.upperlimit.used) {
1608				yyerror("upperlimit already specified");
1609				YYERROR;
1610			}
1611			hfsc_opts.upperlimit.m1 = $3;
1612			hfsc_opts.upperlimit.d = $5;
1613			hfsc_opts.upperlimit.m2 = $7;
1614			hfsc_opts.upperlimit.used = 1;
1615		}
1616		| STRING	{
1617			if (!strcmp($1, "default"))
1618				hfsc_opts.flags |= HFCF_DEFAULTCLASS;
1619			else if (!strcmp($1, "red"))
1620				hfsc_opts.flags |= HFCF_RED;
1621			else if (!strcmp($1, "ecn"))
1622				hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
1623			else if (!strcmp($1, "rio"))
1624				hfsc_opts.flags |= HFCF_RIO;
1625			else {
1626				yyerror("unknown hfsc flag \"%s\"", $1);
1627				free($1);
1628				YYERROR;
1629			}
1630			free($1);
1631		}
1632		;
1633
1634qassign		: /* empty */		{ $$ = NULL; }
1635		| qassign_item		{ $$ = $1; }
1636		| '{' optnl qassign_list '}'	{ $$ = $3; }
1637		;
1638
1639qassign_list	: qassign_item optnl		{ $$ = $1; }
1640		| qassign_list comma qassign_item optnl	{
1641			$1->tail->next = $3;
1642			$1->tail = $3;
1643			$$ = $1;
1644		}
1645		;
1646
1647qassign_item	: STRING			{
1648			$$ = calloc(1, sizeof(struct node_queue));
1649			if ($$ == NULL)
1650				err(1, "qassign_item: calloc");
1651			if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
1652			    sizeof($$->queue)) {
1653				yyerror("queue name '%s' too long (max "
1654				    "%d chars)", $1, sizeof($$->queue)-1);
1655				free($1);
1656				free($$);
1657				YYERROR;
1658			}
1659			free($1);
1660			$$->next = NULL;
1661			$$->tail = $$;
1662		}
1663		;
1664
1665pfrule		: action dir logquick interface af proto fromto
1666		    filter_opts
1667		{
1668			struct pf_rule		 r;
1669			struct node_state_opt	*o;
1670			struct node_proto	*proto;
1671			int			 srctrack = 0;
1672			int			 statelock = 0;
1673			int			 adaptive = 0;
1674			int			 defaults = 0;
1675
1676			if (check_rulestate(PFCTL_STATE_FILTER))
1677				YYERROR;
1678
1679			memset(&r, 0, sizeof(r));
1680
1681			r.action = $1.b1;
1682			switch ($1.b2) {
1683			case PFRULE_RETURNRST:
1684				r.rule_flag |= PFRULE_RETURNRST;
1685				r.return_ttl = $1.w;
1686				break;
1687			case PFRULE_RETURNICMP:
1688				r.rule_flag |= PFRULE_RETURNICMP;
1689				r.return_icmp = $1.w;
1690				r.return_icmp6 = $1.w2;
1691				break;
1692			case PFRULE_RETURN:
1693				r.rule_flag |= PFRULE_RETURN;
1694				r.return_icmp = $1.w;
1695				r.return_icmp6 = $1.w2;
1696				break;
1697			}
1698			r.direction = $2;
1699			r.log = $3.log;
1700			r.logif = $3.logif;
1701			r.quick = $3.quick;
1702			r.prob = $8.prob;
1703			r.rtableid = $8.rtableid;
1704
1705			if ($8.nodf)
1706				r.scrub_flags |= PFSTATE_NODF;
1707			if ($8.randomid)
1708				r.scrub_flags |= PFSTATE_RANDOMID;
1709			if ($8.minttl)
1710				r.min_ttl = $8.minttl;
1711			if ($8.max_mss)
1712				r.max_mss = $8.max_mss;
1713			if ($8.marker & FOM_SETTOS) {
1714				r.scrub_flags |= PFSTATE_SETTOS;
1715				r.set_tos = $8.settos;
1716			}
1717			if ($8.marker & FOM_SCRUB_TCP)
1718				r.scrub_flags |= PFSTATE_SCRUB_TCP;
1719
1720			r.af = $5;
1721			if ($8.tag)
1722				if (strlcpy(r.tagname, $8.tag,
1723				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1724					yyerror("tag too long, max %u chars",
1725					    PF_TAG_NAME_SIZE - 1);
1726					YYERROR;
1727				}
1728			if ($8.match_tag)
1729				if (strlcpy(r.match_tagname, $8.match_tag,
1730				    PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1731					yyerror("tag too long, max %u chars",
1732					    PF_TAG_NAME_SIZE - 1);
1733					YYERROR;
1734				}
1735			r.match_tag_not = $8.match_tag_not;
1736			if (rule_label(&r, $8.label))
1737				YYERROR;
1738			free($8.label);
1739			r.flags = $8.flags.b1;
1740			r.flagset = $8.flags.b2;
1741			if (($8.flags.b1 & $8.flags.b2) != $8.flags.b1) {
1742				yyerror("flags always false");
1743				YYERROR;
1744			}
1745			if ($8.flags.b1 || $8.flags.b2 || $7.src_os) {
1746				for (proto = $6; proto != NULL &&
1747				    proto->proto != IPPROTO_TCP;
1748				    proto = proto->next)
1749					;	/* nothing */
1750				if (proto == NULL && $6 != NULL) {
1751					if ($8.flags.b1 || $8.flags.b2)
1752						yyerror(
1753						    "flags only apply to tcp");
1754					if ($7.src_os)
1755						yyerror(
1756						    "OS fingerprinting only "
1757						    "apply to tcp");
1758					YYERROR;
1759				}
1760#if 0
1761				if (($8.flags.b1 & parse_flags("S")) == 0 &&
1762				    $7.src_os) {
1763					yyerror("OS fingerprinting requires "
1764					    "the SYN TCP flag (flags S/SA)");
1765					YYERROR;
1766				}
1767#endif
1768			}
1769
1770			r.tos = $8.tos;
1771			r.keep_state = $8.keep.action;
1772			o = $8.keep.options;
1773
1774			/* 'keep state' by default on pass rules. */
1775			if (!r.keep_state && !r.action &&
1776			    !($8.marker & FOM_KEEP)) {
1777				r.keep_state = PF_STATE_NORMAL;
1778				o = keep_state_defaults;
1779				defaults = 1;
1780			}
1781
1782			while (o) {
1783				struct node_state_opt	*p = o;
1784
1785				switch (o->type) {
1786				case PF_STATE_OPT_MAX:
1787					if (r.max_states) {
1788						yyerror("state option 'max' "
1789						    "multiple definitions");
1790						YYERROR;
1791					}
1792					r.max_states = o->data.max_states;
1793					break;
1794				case PF_STATE_OPT_NOSYNC:
1795					if (r.rule_flag & PFRULE_NOSYNC) {
1796						yyerror("state option 'sync' "
1797						    "multiple definitions");
1798						YYERROR;
1799					}
1800					r.rule_flag |= PFRULE_NOSYNC;
1801					break;
1802				case PF_STATE_OPT_SRCTRACK:
1803					if (srctrack) {
1804						yyerror("state option "
1805						    "'source-track' "
1806						    "multiple definitions");
1807						YYERROR;
1808					}
1809					srctrack =  o->data.src_track;
1810					r.rule_flag |= PFRULE_SRCTRACK;
1811					break;
1812				case PF_STATE_OPT_MAX_SRC_STATES:
1813					if (r.max_src_states) {
1814						yyerror("state option "
1815						    "'max-src-states' "
1816						    "multiple definitions");
1817						YYERROR;
1818					}
1819					if (o->data.max_src_states == 0) {
1820						yyerror("'max-src-states' must "
1821						    "be > 0");
1822						YYERROR;
1823					}
1824					r.max_src_states =
1825					    o->data.max_src_states;
1826					r.rule_flag |= PFRULE_SRCTRACK;
1827					break;
1828				case PF_STATE_OPT_OVERLOAD:
1829					if (r.overload_tblname[0]) {
1830						yyerror("multiple 'overload' "
1831						    "table definitions");
1832						YYERROR;
1833					}
1834					if (strlcpy(r.overload_tblname,
1835					    o->data.overload.tblname,
1836					    PF_TABLE_NAME_SIZE) >=
1837					    PF_TABLE_NAME_SIZE) {
1838						yyerror("state option: "
1839						    "strlcpy");
1840						YYERROR;
1841					}
1842					r.flush = o->data.overload.flush;
1843					break;
1844				case PF_STATE_OPT_MAX_SRC_CONN:
1845					if (r.max_src_conn) {
1846						yyerror("state option "
1847						    "'max-src-conn' "
1848						    "multiple definitions");
1849						YYERROR;
1850					}
1851					if (o->data.max_src_conn == 0) {
1852						yyerror("'max-src-conn' "
1853						    "must be > 0");
1854						YYERROR;
1855					}
1856					r.max_src_conn =
1857					    o->data.max_src_conn;
1858					r.rule_flag |= PFRULE_SRCTRACK |
1859					    PFRULE_RULESRCTRACK;
1860					break;
1861				case PF_STATE_OPT_MAX_SRC_CONN_RATE:
1862					if (r.max_src_conn_rate.limit) {
1863						yyerror("state option "
1864						    "'max-src-conn-rate' "
1865						    "multiple definitions");
1866						YYERROR;
1867					}
1868					if (!o->data.max_src_conn_rate.limit ||
1869					    !o->data.max_src_conn_rate.seconds) {
1870						yyerror("'max-src-conn-rate' "
1871						    "values must be > 0");
1872						YYERROR;
1873					}
1874					if (o->data.max_src_conn_rate.limit >
1875					    PF_THRESHOLD_MAX) {
1876						yyerror("'max-src-conn-rate' "
1877						    "maximum rate must be < %u",
1878						    PF_THRESHOLD_MAX);
1879						YYERROR;
1880					}
1881					r.max_src_conn_rate.limit =
1882					    o->data.max_src_conn_rate.limit;
1883					r.max_src_conn_rate.seconds =
1884					    o->data.max_src_conn_rate.seconds;
1885					r.rule_flag |= PFRULE_SRCTRACK |
1886					    PFRULE_RULESRCTRACK;
1887					break;
1888				case PF_STATE_OPT_MAX_SRC_NODES:
1889					if (r.max_src_nodes) {
1890						yyerror("state option "
1891						    "'max-src-nodes' "
1892						    "multiple definitions");
1893						YYERROR;
1894					}
1895					if (o->data.max_src_nodes == 0) {
1896						yyerror("'max-src-nodes' must "
1897						    "be > 0");
1898						YYERROR;
1899					}
1900					r.max_src_nodes =
1901					    o->data.max_src_nodes;
1902					r.rule_flag |= PFRULE_SRCTRACK |
1903					    PFRULE_RULESRCTRACK;
1904					break;
1905				case PF_STATE_OPT_STATELOCK:
1906					if (statelock) {
1907						yyerror("state locking option: "
1908						    "multiple definitions");
1909						YYERROR;
1910					}
1911					statelock = 1;
1912					r.rule_flag |= o->data.statelock;
1913					break;
1914				case PF_STATE_OPT_SLOPPY:
1915					if (r.rule_flag & PFRULE_STATESLOPPY) {
1916						yyerror("state sloppy option: "
1917						    "multiple definitions");
1918						YYERROR;
1919					}
1920					r.rule_flag |= PFRULE_STATESLOPPY;
1921					break;
1922				case PF_STATE_OPT_PFLOW:
1923					if (r.rule_flag & PFRULE_PFLOW) {
1924						yyerror("state pflow "
1925						    "option: multiple "
1926						    "definitions");
1927						YYERROR;
1928					}
1929					r.rule_flag |= PFRULE_PFLOW;
1930					break;
1931				case PF_STATE_OPT_TIMEOUT:
1932					if (o->data.timeout.number ==
1933					    PFTM_ADAPTIVE_START ||
1934					    o->data.timeout.number ==
1935					    PFTM_ADAPTIVE_END)
1936						adaptive = 1;
1937					if (r.timeout[o->data.timeout.number]) {
1938						yyerror("state timeout %s "
1939						    "multiple definitions",
1940						    pf_timeouts[o->data.
1941						    timeout.number].name);
1942						YYERROR;
1943					}
1944					r.timeout[o->data.timeout.number] =
1945					    o->data.timeout.seconds;
1946				}
1947				o = o->next;
1948				if (!defaults)
1949					free(p);
1950			}
1951
1952			/* 'flags S/SA' by default on stateful rules */
1953			if (!r.action && !r.flags && !r.flagset &&
1954			    !$8.fragment && !($8.marker & FOM_FLAGS) &&
1955			    r.keep_state) {
1956				r.flags = parse_flags("S");
1957				r.flagset =  parse_flags("SA");
1958			}
1959			if (!adaptive && r.max_states) {
1960				r.timeout[PFTM_ADAPTIVE_START] =
1961				    (r.max_states / 10) * 6;
1962				r.timeout[PFTM_ADAPTIVE_END] =
1963				    (r.max_states / 10) * 12;
1964			}
1965			if (r.rule_flag & PFRULE_SRCTRACK) {
1966				if (srctrack == PF_SRCTRACK_GLOBAL &&
1967				    r.max_src_nodes) {
1968					yyerror("'max-src-nodes' is "
1969					    "incompatible with "
1970					    "'source-track global'");
1971					YYERROR;
1972				}
1973				if (srctrack == PF_SRCTRACK_GLOBAL &&
1974				    r.max_src_conn) {
1975					yyerror("'max-src-conn' is "
1976					    "incompatible with "
1977					    "'source-track global'");
1978					YYERROR;
1979				}
1980				if (srctrack == PF_SRCTRACK_GLOBAL &&
1981				    r.max_src_conn_rate.seconds) {
1982					yyerror("'max-src-conn-rate' is "
1983					    "incompatible with "
1984					    "'source-track global'");
1985					YYERROR;
1986				}
1987				if (r.timeout[PFTM_SRC_NODE] <
1988				    r.max_src_conn_rate.seconds)
1989					r.timeout[PFTM_SRC_NODE] =
1990					    r.max_src_conn_rate.seconds;
1991				r.rule_flag |= PFRULE_SRCTRACK;
1992				if (srctrack == PF_SRCTRACK_RULE)
1993					r.rule_flag |= PFRULE_RULESRCTRACK;
1994			}
1995			if (r.keep_state && !statelock)
1996				r.rule_flag |= default_statelock;
1997
1998			if ($8.fragment)
1999				r.rule_flag |= PFRULE_FRAGMENT;
2000			r.allow_opts = $8.allowopts;
2001
2002			decide_address_family($7.src.host, &r.af);
2003			decide_address_family($7.dst.host, &r.af);
2004
2005			if ($8.route.rt) {
2006				if (!r.direction) {
2007					yyerror("direction must be explicit "
2008					    "with rules that specify routing");
2009					YYERROR;
2010				}
2011				r.rt = $8.route.rt;
2012				r.route.opts = $8.route.pool_opts;
2013				if ($8.route.key != NULL)
2014					memcpy(&r.route.key, $8.route.key,
2015					    sizeof(struct pf_poolhashkey));
2016			}
2017			if (r.rt && r.rt != PF_FASTROUTE) {
2018				decide_address_family($8.route.host, &r.af);
2019				remove_invalid_hosts(&$8.route.host, &r.af);
2020				if ($8.route.host == NULL) {
2021					yyerror("no routing address with "
2022					    "matching address family found.");
2023					YYERROR;
2024				}
2025				if ((r.route.opts & PF_POOL_TYPEMASK) ==
2026				    PF_POOL_NONE && ($8.route.host->next != NULL ||
2027				    $8.route.host->addr.type == PF_ADDR_TABLE ||
2028				    DYNIF_MULTIADDR($8.route.host->addr)))
2029					r.route.opts |= PF_POOL_ROUNDROBIN;
2030				if ((r.route.opts & PF_POOL_TYPEMASK) !=
2031				    PF_POOL_ROUNDROBIN &&
2032				    disallow_table($8.route.host,
2033				    "tables are only "
2034				    "supported in round-robin routing pools"))
2035					YYERROR;
2036				if ((r.route.opts & PF_POOL_TYPEMASK) !=
2037				    PF_POOL_ROUNDROBIN &&
2038				    disallow_alias($8.route.host,
2039				    "interface (%s) "
2040				    "is only supported in round-robin "
2041				    "routing pools"))
2042					YYERROR;
2043				if ($8.route.host->next != NULL) {
2044					if ((r.route.opts & PF_POOL_TYPEMASK) !=
2045					    PF_POOL_ROUNDROBIN) {
2046						yyerror("r.route.opts must "
2047						    "be PF_POOL_ROUNDROBIN");
2048						YYERROR;
2049					}
2050				}
2051				/* fake redirspec */
2052				if (($8.rroute.rdr = calloc(1,
2053				    sizeof(*$8.rroute.rdr))) == NULL)
2054					err(1, "$8.rroute.rdr");
2055				$8.rroute.rdr->host = $8.route.host;
2056			}
2057			if ($8.queues.qname != NULL) {
2058				if (strlcpy(r.qname, $8.queues.qname,
2059				    sizeof(r.qname)) >= sizeof(r.qname)) {
2060					yyerror("rule qname too long (max "
2061					    "%d chars)", sizeof(r.qname)-1);
2062					YYERROR;
2063				}
2064				free($8.queues.qname);
2065			}
2066			if ($8.queues.pqname != NULL) {
2067				if (strlcpy(r.pqname, $8.queues.pqname,
2068				    sizeof(r.pqname)) >= sizeof(r.pqname)) {
2069					yyerror("rule pqname too long (max "
2070					    "%d chars)", sizeof(r.pqname)-1);
2071					YYERROR;
2072				}
2073				free($8.queues.pqname);
2074			}
2075			if ((r.divert.port = $8.divert.port)) {
2076				if (r.direction == PF_OUT) {
2077					if ($8.divert.addr) {
2078						yyerror("address specified "
2079						    "for outgoing divert");
2080						YYERROR;
2081					}
2082					bzero(&r.divert.addr,
2083					    sizeof(r.divert.addr));
2084				} else {
2085					if (!$8.divert.addr) {
2086						yyerror("no address specified "
2087						    "for incoming divert");
2088						YYERROR;
2089					}
2090					if ($8.divert.addr->af != r.af) {
2091						yyerror("address family "
2092						    "mismatch for divert");
2093						YYERROR;
2094					}
2095					r.divert.addr =
2096					    $8.divert.addr->addr.v.a.addr;
2097				}
2098			}
2099			r.divert_packet.port = $8.divert_packet.port;
2100
2101			expand_rule(&r, 0, $4, &$8.nat, &$8.rdr, &$8.rroute, $6,
2102			    $7.src_os,
2103			    $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
2104			    $8.uid, $8.gid, $8.icmpspec, "");
2105		}
2106		;
2107
2108filter_opts	:	{
2109				bzero(&filter_opts, sizeof filter_opts);
2110				filter_opts.rtableid = -1;
2111			}
2112		    filter_opts_l
2113			{ $$ = filter_opts; }
2114		| /* empty */	{
2115			bzero(&filter_opts, sizeof filter_opts);
2116			filter_opts.rtableid = -1;
2117			$$ = filter_opts;
2118		}
2119		;
2120
2121filter_opts_l	: filter_opts_l filter_opt
2122		| filter_opt
2123		;
2124
2125filter_opt	: USER uids {
2126			if (filter_opts.uid)
2127				$2->tail->next = filter_opts.uid;
2128			filter_opts.uid = $2;
2129		}
2130		| GROUP gids {
2131			if (filter_opts.gid)
2132				$2->tail->next = filter_opts.gid;
2133			filter_opts.gid = $2;
2134		}
2135		| flags {
2136			if (filter_opts.marker & FOM_FLAGS) {
2137				yyerror("flags cannot be redefined");
2138				YYERROR;
2139			}
2140			filter_opts.marker |= FOM_FLAGS;
2141			filter_opts.flags.b1 |= $1.b1;
2142			filter_opts.flags.b2 |= $1.b2;
2143			filter_opts.flags.w |= $1.w;
2144			filter_opts.flags.w2 |= $1.w2;
2145		}
2146		| icmpspec {
2147			if (filter_opts.marker & FOM_ICMP) {
2148				yyerror("icmp-type cannot be redefined");
2149				YYERROR;
2150			}
2151			filter_opts.marker |= FOM_ICMP;
2152			filter_opts.icmpspec = $1;
2153		}
2154		| TOS tos {
2155			if (filter_opts.marker & FOM_TOS) {
2156				yyerror("tos cannot be redefined");
2157				YYERROR;
2158			}
2159			filter_opts.marker |= FOM_TOS;
2160			filter_opts.tos = $2;
2161		}
2162		| keep {
2163			if (filter_opts.marker & FOM_KEEP) {
2164				yyerror("modulate or keep cannot be redefined");
2165				YYERROR;
2166			}
2167			filter_opts.marker |= FOM_KEEP;
2168			filter_opts.keep.action = $1.action;
2169			filter_opts.keep.options = $1.options;
2170		}
2171		| FRAGMENT {
2172			filter_opts.fragment = 1;
2173		}
2174		| ALLOWOPTS {
2175			filter_opts.allowopts = 1;
2176		}
2177		| label	{
2178			if (filter_opts.label) {
2179				yyerror("label cannot be redefined");
2180				YYERROR;
2181			}
2182			filter_opts.label = $1;
2183		}
2184		| qname	{
2185			if (filter_opts.queues.qname) {
2186				yyerror("queue cannot be redefined");
2187				YYERROR;
2188			}
2189			filter_opts.queues = $1;
2190		}
2191		| TAG string				{
2192			filter_opts.tag = $2;
2193		}
2194		| not TAGGED string			{
2195			filter_opts.match_tag = $3;
2196			filter_opts.match_tag_not = $1;
2197		}
2198		| PROBABILITY probability		{
2199			double	p;
2200
2201			p = floor($2 * UINT_MAX + 0.5);
2202			if (p < 0.0 || p > UINT_MAX) {
2203				yyerror("invalid probability: %lf", p);
2204				YYERROR;
2205			}
2206			filter_opts.prob = (u_int32_t)p;
2207			if (filter_opts.prob == 0)
2208				filter_opts.prob = 1;
2209		}
2210		| RTABLE NUMBER				{
2211			if ($2 < 0 || $2 > RT_TABLEID_MAX) {
2212				yyerror("invalid rtable id");
2213				YYERROR;
2214			}
2215			filter_opts.rtableid = $2;
2216		}
2217		| DIVERTTO STRING PORT portplain {
2218			if ((filter_opts.divert.addr = host($2)) == NULL) {
2219				yyerror("could not parse divert address: %s",
2220				    $2);
2221				free($2);
2222				YYERROR;
2223			}
2224			free($2);
2225			filter_opts.divert.port = $4.a;
2226			if (!filter_opts.divert.port) {
2227				yyerror("invalid divert port: %u", ntohs($4.a));
2228				YYERROR;
2229			}
2230		}
2231		| DIVERTREPLY {
2232			filter_opts.divert.port = 1;	/* some random value */
2233		}
2234		| DIVERTPACKET PORT number {
2235			/*
2236			 * If IP reassembly was not turned off, also
2237			 * forcibly enable TCP reassembly by default.
2238			 */
2239			if (pf->reassemble & PF_REASS_ENABLED)
2240				filter_opts.marker |= FOM_SCRUB_TCP;
2241
2242			if ($3 < 1 || $3 > 65535) {
2243				yyerror("invalid divert port");
2244				YYERROR;
2245			}
2246
2247			filter_opts.divert_packet.port = htons($3);
2248		}
2249		| SCRUB '(' scrub_opts ')' {
2250			filter_opts.nodf = $3.nodf;
2251			filter_opts.minttl = $3.minttl;
2252			filter_opts.settos = $3.settos;
2253			filter_opts.randomid = $3.randomid;
2254			filter_opts.max_mss = $3.maxmss;
2255			if ($3.reassemble_tcp)
2256				filter_opts.marker |= FOM_SCRUB_TCP;
2257			filter_opts.marker |= $3.marker;
2258		}
2259		| NATTO redirpool pool_opts {
2260			if (filter_opts.nat.rdr) {
2261				yyerror("cannot respecify nat-to/binat-to");
2262				YYERROR;
2263			}
2264			filter_opts.nat.rdr = $2;
2265			memcpy(&filter_opts.nat.pool_opts, &$3,
2266			    sizeof(filter_opts.nat.pool_opts));
2267		}
2268		| RDRTO redirpool pool_opts {
2269			if (filter_opts.rdr.rdr) {
2270				yyerror("cannot respecify rdr-to");
2271				YYERROR;
2272			}
2273			filter_opts.rdr.rdr = $2;
2274			memcpy(&filter_opts.rdr.pool_opts, &$3,
2275			    sizeof(filter_opts.rdr.pool_opts));
2276		}
2277		| BINATTO redirpool pool_opts {
2278			if (filter_opts.nat.rdr) {
2279				yyerror("cannot respecify nat-to/binat-to");
2280				YYERROR;
2281			}
2282			filter_opts.nat.rdr = $2;
2283			filter_opts.nat.binat = 1;
2284			memcpy(&filter_opts.nat.pool_opts, &$3,
2285			    sizeof(filter_opts.nat.pool_opts));
2286			filter_opts.nat.pool_opts.staticport = 1;
2287		}
2288		| FASTROUTE {
2289			filter_opts.route.host = NULL;
2290			filter_opts.route.rt = PF_FASTROUTE;
2291			filter_opts.route.pool_opts = 0;
2292		}
2293		| ROUTETO routespec pool_opts {
2294			filter_opts.route.host = $2;
2295			filter_opts.route.rt = PF_ROUTETO;
2296			filter_opts.route.pool_opts = $3.type | $3.opts;
2297			if ($3.key != NULL)
2298				filter_opts.route.key = $3.key;
2299		}
2300		| REPLYTO routespec pool_opts {
2301			filter_opts.route.host = $2;
2302			filter_opts.route.rt = PF_REPLYTO;
2303			filter_opts.route.pool_opts = $3.type | $3.opts;
2304			if ($3.key != NULL)
2305				filter_opts.route.key = $3.key;
2306		}
2307		| DUPTO routespec pool_opts {
2308			filter_opts.route.host = $2;
2309			filter_opts.route.rt = PF_DUPTO;
2310			filter_opts.route.pool_opts = $3.type | $3.opts;
2311			if ($3.key != NULL)
2312				filter_opts.route.key = $3.key;
2313		}
2314		;
2315
2316probability	: STRING				{
2317			char	*e;
2318			double	 p = strtod($1, &e);
2319
2320			if (*e == '%') {
2321				p *= 0.01;
2322				e++;
2323			}
2324			if (*e) {
2325				yyerror("invalid probability: %s", $1);
2326				free($1);
2327				YYERROR;
2328			}
2329			free($1);
2330			$$ = p;
2331		}
2332		| NUMBER				{
2333			$$ = (double)$1;
2334		}
2335		;
2336
2337
2338action		: PASS			{ $$.b1 = PF_PASS; $$.b2 = $$.w = 0; }
2339		| MATCH			{ $$.b1 = PF_MATCH; $$.b2 = $$.w = 0; }
2340		| BLOCK blockspec	{ $$ = $2; $$.b1 = PF_DROP; }
2341		;
2342
2343blockspec	: /* empty */		{
2344			$$.b2 = blockpolicy;
2345			$$.w = returnicmpdefault;
2346			$$.w2 = returnicmp6default;
2347		}
2348		| DROP			{
2349			$$.b2 = PFRULE_DROP;
2350			$$.w = 0;
2351			$$.w2 = 0;
2352		}
2353		| RETURNRST		{
2354			$$.b2 = PFRULE_RETURNRST;
2355			$$.w = 0;
2356			$$.w2 = 0;
2357		}
2358		| RETURNRST '(' TTL NUMBER ')'	{
2359			if ($4 < 0 || $4 > 255) {
2360				yyerror("illegal ttl value %d", $4);
2361				YYERROR;
2362			}
2363			$$.b2 = PFRULE_RETURNRST;
2364			$$.w = $4;
2365			$$.w2 = 0;
2366		}
2367		| RETURNICMP		{
2368			$$.b2 = PFRULE_RETURNICMP;
2369			$$.w = returnicmpdefault;
2370			$$.w2 = returnicmp6default;
2371		}
2372		| RETURNICMP6		{
2373			$$.b2 = PFRULE_RETURNICMP;
2374			$$.w = returnicmpdefault;
2375			$$.w2 = returnicmp6default;
2376		}
2377		| RETURNICMP '(' reticmpspec ')'	{
2378			$$.b2 = PFRULE_RETURNICMP;
2379			$$.w = $3;
2380			$$.w2 = returnicmpdefault;
2381		}
2382		| RETURNICMP6 '(' reticmp6spec ')'	{
2383			$$.b2 = PFRULE_RETURNICMP;
2384			$$.w = returnicmpdefault;
2385			$$.w2 = $3;
2386		}
2387		| RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
2388			$$.b2 = PFRULE_RETURNICMP;
2389			$$.w = $3;
2390			$$.w2 = $5;
2391		}
2392		| RETURN {
2393			$$.b2 = PFRULE_RETURN;
2394			$$.w = returnicmpdefault;
2395			$$.w2 = returnicmp6default;
2396		}
2397		;
2398
2399reticmpspec	: STRING			{
2400			if (!($$ = parseicmpspec($1, AF_INET))) {
2401				free($1);
2402				YYERROR;
2403			}
2404			free($1);
2405		}
2406		| NUMBER			{
2407			u_int8_t		icmptype;
2408
2409			if ($1 < 0 || $1 > 255) {
2410				yyerror("invalid icmp code %lu", $1);
2411				YYERROR;
2412			}
2413			icmptype = returnicmpdefault >> 8;
2414			$$ = (icmptype << 8 | $1);
2415		}
2416		;
2417
2418reticmp6spec	: STRING			{
2419			if (!($$ = parseicmpspec($1, AF_INET6))) {
2420				free($1);
2421				YYERROR;
2422			}
2423			free($1);
2424		}
2425		| NUMBER			{
2426			u_int8_t		icmptype;
2427
2428			if ($1 < 0 || $1 > 255) {
2429				yyerror("invalid icmp code %lu", $1);
2430				YYERROR;
2431			}
2432			icmptype = returnicmp6default >> 8;
2433			$$ = (icmptype << 8 | $1);
2434		}
2435		;
2436
2437dir		: /* empty */			{ $$ = PF_INOUT; }
2438		| IN				{ $$ = PF_IN; }
2439		| OUT				{ $$ = PF_OUT; }
2440		;
2441
2442quick		: /* empty */			{ $$.quick = 0; }
2443		| QUICK				{ $$.quick = 1; }
2444		;
2445
2446logquick	: /* empty */	{ $$.log = 0; $$.quick = 0; $$.logif = 0; }
2447		| log		{ $$ = $1; $$.quick = 0; }
2448		| QUICK		{ $$.quick = 1; $$.log = 0; $$.logif = 0; }
2449		| log QUICK	{ $$ = $1; $$.quick = 1; }
2450		| QUICK log	{ $$ = $2; $$.quick = 1; }
2451		;
2452
2453log		: LOG			{ $$.log = PF_LOG; $$.logif = 0; }
2454		| LOG '(' logopts ')'	{
2455			$$.log = PF_LOG | $3.log;
2456			$$.logif = $3.logif;
2457		}
2458		;
2459
2460logopts		: logopt			{ $$ = $1; }
2461		| logopts comma logopt		{
2462			$$.log = $1.log | $3.log;
2463			$$.logif = $3.logif;
2464			if ($$.logif == 0)
2465				$$.logif = $1.logif;
2466		}
2467		;
2468
2469logopt		: ALL		{ $$.log = PF_LOG_ALL; $$.logif = 0; }
2470		| USER		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2471		| GROUP		{ $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2472		| TO string	{
2473			const char	*errstr;
2474			u_int		 i;
2475
2476			$$.log = 0;
2477			if (strncmp($2, "pflog", 5)) {
2478				yyerror("%s: should be a pflog interface", $2);
2479				free($2);
2480				YYERROR;
2481			}
2482			i = strtonum($2 + 5, 0, 255, &errstr);
2483			if (errstr) {
2484				yyerror("%s: %s", $2, errstr);
2485				free($2);
2486				YYERROR;
2487			}
2488			free($2);
2489			$$.logif = i;
2490		}
2491		;
2492
2493interface	: /* empty */			{ $$ = NULL; }
2494		| ON if_item_not		{ $$ = $2; }
2495		| ON '{' optnl if_list '}'	{ $$ = $4; }
2496		;
2497
2498if_list		: if_item_not optnl		{ $$ = $1; }
2499		| if_list comma if_item_not optnl	{
2500			$1->tail->next = $3;
2501			$1->tail = $3;
2502			$$ = $1;
2503		}
2504		;
2505
2506if_item_not	: not if_item			{ $$ = $2; $$->not = $1; }
2507		;
2508
2509if_item		: STRING			{
2510			struct node_host	*n;
2511
2512			$$ = calloc(1, sizeof(struct node_if));
2513			if ($$ == NULL)
2514				err(1, "if_item: calloc");
2515			if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2516			    sizeof($$->ifname)) {
2517				free($1);
2518				free($$);
2519				yyerror("interface name too long");
2520				YYERROR;
2521			}
2522
2523			if ((n = ifa_exists($1)) != NULL)
2524				$$->ifa_flags = n->ifa_flags;
2525
2526			free($1);
2527			$$->not = 0;
2528			$$->next = NULL;
2529			$$->tail = $$;
2530		}
2531		;
2532
2533af		: /* empty */			{ $$ = 0; }
2534		| INET				{ $$ = AF_INET; }
2535		| INET6				{ $$ = AF_INET6; }
2536		;
2537
2538proto		: /* empty */				{ $$ = NULL; }
2539		| PROTO proto_item			{ $$ = $2; }
2540		| PROTO '{' optnl proto_list '}'	{ $$ = $4; }
2541		;
2542
2543proto_list	: proto_item optnl		{ $$ = $1; }
2544		| proto_list comma proto_item optnl	{
2545			$1->tail->next = $3;
2546			$1->tail = $3;
2547			$$ = $1;
2548		}
2549		;
2550
2551proto_item	: protoval			{
2552			u_int8_t	pr;
2553
2554			pr = (u_int8_t)$1;
2555			if (pr == 0) {
2556				yyerror("proto 0 cannot be used");
2557				YYERROR;
2558			}
2559			$$ = calloc(1, sizeof(struct node_proto));
2560			if ($$ == NULL)
2561				err(1, "proto_item: calloc");
2562			$$->proto = pr;
2563			$$->next = NULL;
2564			$$->tail = $$;
2565		}
2566		;
2567
2568protoval	: STRING			{
2569			struct protoent	*p;
2570
2571			p = getprotobyname($1);
2572			if (p == NULL) {
2573				yyerror("unknown protocol %s", $1);
2574				free($1);
2575				YYERROR;
2576			}
2577			$$ = p->p_proto;
2578			free($1);
2579		}
2580		| NUMBER			{
2581			if ($1 < 0 || $1 > 255) {
2582				yyerror("protocol outside range");
2583				YYERROR;
2584			}
2585		}
2586		;
2587
2588fromto		: ALL				{
2589			$$.src.host = NULL;
2590			$$.src.port = NULL;
2591			$$.dst.host = NULL;
2592			$$.dst.port = NULL;
2593			$$.src_os = NULL;
2594		}
2595		| from os to			{
2596			$$.src = $1;
2597			$$.src_os = $2;
2598			$$.dst = $3;
2599		}
2600		;
2601
2602os		: /* empty */			{ $$ = NULL; }
2603		| OS xos			{ $$ = $2; }
2604		| OS '{' optnl os_list '}'	{ $$ = $4; }
2605		;
2606
2607xos		: STRING {
2608			$$ = calloc(1, sizeof(struct node_os));
2609			if ($$ == NULL)
2610				err(1, "os: calloc");
2611			$$->os = $1;
2612			$$->tail = $$;
2613		}
2614		;
2615
2616os_list		: xos optnl 			{ $$ = $1; }
2617		| os_list comma xos optnl	{
2618			$1->tail->next = $3;
2619			$1->tail = $3;
2620			$$ = $1;
2621		}
2622		;
2623
2624from		: /* empty */			{
2625			$$.host = NULL;
2626			$$.port = NULL;
2627		}
2628		| FROM ipportspec		{
2629			$$ = $2;
2630		}
2631		;
2632
2633to		: /* empty */			{
2634			$$.host = NULL;
2635			$$.port = NULL;
2636		}
2637		| TO ipportspec		{
2638			if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
2639			    "not permitted in a destination address"))
2640				YYERROR;
2641			$$ = $2;
2642		}
2643		;
2644
2645ipportspec	: ipspec			{
2646			$$.host = $1;
2647			$$.port = NULL;
2648		}
2649		| ipspec PORT portspec		{
2650			$$.host = $1;
2651			$$.port = $3;
2652		}
2653		| PORT portspec			{
2654			$$.host = NULL;
2655			$$.port = $2;
2656		}
2657		;
2658
2659optnl		: '\n' optnl
2660		|
2661		;
2662
2663ipspec		: ANY				{ $$ = NULL; }
2664		| xhost				{ $$ = $1; }
2665		| '{' optnl host_list '}'	{ $$ = $3; }
2666		;
2667
2668host_list	: ipspec optnl			{ $$ = $1; }
2669		| host_list comma ipspec optnl	{
2670			if ($3 == NULL)
2671				$$ = $1;
2672			else if ($1 == NULL)
2673				$$ = $3;
2674			else {
2675				$1->tail->next = $3;
2676				$1->tail = $3->tail;
2677				$$ = $1;
2678			}
2679		}
2680		;
2681
2682xhost		: not host			{
2683			struct node_host	*n;
2684
2685			for (n = $2; n != NULL; n = n->next)
2686				n->not = $1;
2687			$$ = $2;
2688		}
2689		| not NOROUTE			{
2690			$$ = calloc(1, sizeof(struct node_host));
2691			if ($$ == NULL)
2692				err(1, "xhost: calloc");
2693			$$->addr.type = PF_ADDR_NOROUTE;
2694			$$->next = NULL;
2695			$$->not = $1;
2696			$$->tail = $$;
2697		}
2698		| not URPFFAILED		{
2699			$$ = calloc(1, sizeof(struct node_host));
2700			if ($$ == NULL)
2701				err(1, "xhost: calloc");
2702			$$->addr.type = PF_ADDR_URPFFAILED;
2703			$$->next = NULL;
2704			$$->not = $1;
2705			$$->tail = $$;
2706		}
2707		;
2708
2709host		: STRING			{
2710			if (($$ = host($1)) == NULL)	{
2711				/* error. "any" is handled elsewhere */
2712				free($1);
2713				yyerror("could not parse host specification");
2714				YYERROR;
2715			}
2716			free($1);
2717
2718		}
2719		| STRING '-' STRING		{
2720			struct node_host *b, *e;
2721
2722			if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
2723				free($1);
2724				free($3);
2725				yyerror("could not parse host specification");
2726				YYERROR;
2727			}
2728			if (b->af != e->af ||
2729			    b->addr.type != PF_ADDR_ADDRMASK ||
2730			    e->addr.type != PF_ADDR_ADDRMASK ||
2731			    unmask(&b->addr.v.a.mask, b->af) !=
2732			    (b->af == AF_INET ? 32 : 128) ||
2733			    unmask(&e->addr.v.a.mask, e->af) !=
2734			    (e->af == AF_INET ? 32 : 128) ||
2735			    b->next != NULL || b->not ||
2736			    e->next != NULL || e->not) {
2737				free(b);
2738				free(e);
2739				free($1);
2740				free($3);
2741				yyerror("invalid address range");
2742				YYERROR;
2743			}
2744			memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
2745			    sizeof(b->addr.v.a.mask));
2746			b->addr.type = PF_ADDR_RANGE;
2747			$$ = b;
2748			free(e);
2749			free($1);
2750			free($3);
2751		}
2752		| STRING '/' NUMBER		{
2753			char	*buf;
2754
2755			if (asprintf(&buf, "%s/%lld", $1, $3) == -1)
2756				err(1, "host: asprintf");
2757			free($1);
2758			if (($$ = host(buf)) == NULL)	{
2759				/* error. "any" is handled elsewhere */
2760				free(buf);
2761				yyerror("could not parse host specification");
2762				YYERROR;
2763			}
2764			free(buf);
2765		}
2766		| NUMBER '/' NUMBER		{
2767			char	*buf;
2768
2769			/* ie. for 10/8 parsing */
2770			if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
2771				err(1, "host: asprintf");
2772			if (($$ = host(buf)) == NULL)	{
2773				/* error. "any" is handled elsewhere */
2774				free(buf);
2775				yyerror("could not parse host specification");
2776				YYERROR;
2777			}
2778			free(buf);
2779		}
2780		| dynaddr
2781		| dynaddr '/' NUMBER		{
2782			struct node_host	*n;
2783
2784			if ($3 < 0 || $3 > 128) {
2785				yyerror("bit number too big");
2786				YYERROR;
2787			}
2788			$$ = $1;
2789			for (n = $1; n != NULL; n = n->next)
2790				set_ipmask(n, $3);
2791		}
2792		| '<' STRING '>'	{
2793			if (strlen($2) >= PF_TABLE_NAME_SIZE) {
2794				yyerror("table name '%s' too long", $2);
2795				free($2);
2796				YYERROR;
2797			}
2798			$$ = calloc(1, sizeof(struct node_host));
2799			if ($$ == NULL)
2800				err(1, "host: calloc");
2801			$$->addr.type = PF_ADDR_TABLE;
2802			if (strlcpy($$->addr.v.tblname, $2,
2803			    sizeof($$->addr.v.tblname)) >=
2804			    sizeof($$->addr.v.tblname))
2805				errx(1, "host: strlcpy");
2806			free($2);
2807			$$->next = NULL;
2808			$$->tail = $$;
2809		}
2810		| ROUTE	STRING		{
2811			$$ = calloc(1, sizeof(struct node_host));
2812			if ($$ == NULL) {
2813				free($2);
2814				err(1, "host: calloc");
2815			}
2816			$$->addr.type = PF_ADDR_RTLABEL;
2817			if (strlcpy($$->addr.v.rtlabelname, $2,
2818			    sizeof($$->addr.v.rtlabelname)) >=
2819			    sizeof($$->addr.v.rtlabelname)) {
2820				yyerror("route label too long, max %u chars",
2821				    sizeof($$->addr.v.rtlabelname) - 1);
2822				free($2);
2823				free($$);
2824				YYERROR;
2825			}
2826			$$->next = NULL;
2827			$$->tail = $$;
2828			free($2);
2829		}
2830		;
2831
2832number		: NUMBER
2833		| STRING		{
2834			u_long	ulval;
2835
2836			if (atoul($1, &ulval) == -1) {
2837				yyerror("%s is not a number", $1);
2838				free($1);
2839				YYERROR;
2840			} else
2841				$$ = ulval;
2842			free($1);
2843		}
2844		;
2845
2846dynaddr		: '(' STRING ')'		{
2847			int	 flags = 0;
2848			char	*p, *op;
2849
2850			op = $2;
2851			if (!isalpha(op[0])) {
2852				yyerror("invalid interface name '%s'", op);
2853				free(op);
2854				YYERROR;
2855			}
2856			while ((p = strrchr($2, ':')) != NULL) {
2857				if (!strcmp(p+1, "network"))
2858					flags |= PFI_AFLAG_NETWORK;
2859				else if (!strcmp(p+1, "broadcast"))
2860					flags |= PFI_AFLAG_BROADCAST;
2861				else if (!strcmp(p+1, "peer"))
2862					flags |= PFI_AFLAG_PEER;
2863				else if (!strcmp(p+1, "0"))
2864					flags |= PFI_AFLAG_NOALIAS;
2865				else {
2866					yyerror("interface %s has bad modifier",
2867					    $2);
2868					free(op);
2869					YYERROR;
2870				}
2871				*p = '\0';
2872			}
2873			if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
2874				free(op);
2875				yyerror("illegal combination of "
2876				    "interface modifiers");
2877				YYERROR;
2878			}
2879			$$ = calloc(1, sizeof(struct node_host));
2880			if ($$ == NULL)
2881				err(1, "address: calloc");
2882			$$->af = 0;
2883			set_ipmask($$, 128);
2884			$$->addr.type = PF_ADDR_DYNIFTL;
2885			$$->addr.iflags = flags;
2886			if (strlcpy($$->addr.v.ifname, $2,
2887			    sizeof($$->addr.v.ifname)) >=
2888			    sizeof($$->addr.v.ifname)) {
2889				free(op);
2890				free($$);
2891				yyerror("interface name too long");
2892				YYERROR;
2893			}
2894			free(op);
2895			$$->next = NULL;
2896			$$->tail = $$;
2897		}
2898		;
2899
2900portspec	: port_item			{ $$ = $1; }
2901		| '{' optnl port_list '}'	{ $$ = $3; }
2902		;
2903
2904port_list	: port_item optnl		{ $$ = $1; }
2905		| port_list comma port_item optnl	{
2906			$1->tail->next = $3;
2907			$1->tail = $3;
2908			$$ = $1;
2909		}
2910		;
2911
2912port_item	: portrange			{
2913			$$ = calloc(1, sizeof(struct node_port));
2914			if ($$ == NULL)
2915				err(1, "port_item: calloc");
2916			$$->port[0] = $1.a;
2917			$$->port[1] = $1.b;
2918			if ($1.t)
2919				$$->op = PF_OP_RRG;
2920			else
2921				$$->op = PF_OP_EQ;
2922			$$->next = NULL;
2923			$$->tail = $$;
2924		}
2925		| unaryop portrange	{
2926			if ($2.t) {
2927				yyerror("':' cannot be used with an other "
2928				    "port operator");
2929				YYERROR;
2930			}
2931			$$ = calloc(1, sizeof(struct node_port));
2932			if ($$ == NULL)
2933				err(1, "port_item: calloc");
2934			$$->port[0] = $2.a;
2935			$$->port[1] = $2.b;
2936			$$->op = $1;
2937			$$->next = NULL;
2938			$$->tail = $$;
2939		}
2940		| portrange PORTBINARY portrange	{
2941			if ($1.t || $3.t) {
2942				yyerror("':' cannot be used with an other "
2943				    "port operator");
2944				YYERROR;
2945			}
2946			$$ = calloc(1, sizeof(struct node_port));
2947			if ($$ == NULL)
2948				err(1, "port_item: calloc");
2949			$$->port[0] = $1.a;
2950			$$->port[1] = $3.a;
2951			$$->op = $2;
2952			$$->next = NULL;
2953			$$->tail = $$;
2954		}
2955		;
2956
2957portplain	: numberstring			{
2958			if (parseport($1, &$$, 0) == -1) {
2959				free($1);
2960				YYERROR;
2961			}
2962			free($1);
2963		}
2964		;
2965
2966portrange	: numberstring			{
2967			if (parseport($1, &$$, PPORT_RANGE) == -1) {
2968				free($1);
2969				YYERROR;
2970			}
2971			free($1);
2972		}
2973		;
2974
2975uids		: uid_item			{ $$ = $1; }
2976		| '{' optnl uid_list '}'	{ $$ = $3; }
2977		;
2978
2979uid_list	: uid_item optnl		{ $$ = $1; }
2980		| uid_list comma uid_item optnl	{
2981			$1->tail->next = $3;
2982			$1->tail = $3;
2983			$$ = $1;
2984		}
2985		;
2986
2987uid_item	: uid				{
2988			$$ = calloc(1, sizeof(struct node_uid));
2989			if ($$ == NULL)
2990				err(1, "uid_item: calloc");
2991			$$->uid[0] = $1;
2992			$$->uid[1] = $1;
2993			$$->op = PF_OP_EQ;
2994			$$->next = NULL;
2995			$$->tail = $$;
2996		}
2997		| unaryop uid			{
2998			if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
2999				yyerror("user unknown requires operator = or "
3000				    "!=");
3001				YYERROR;
3002			}
3003			$$ = calloc(1, sizeof(struct node_uid));
3004			if ($$ == NULL)
3005				err(1, "uid_item: calloc");
3006			$$->uid[0] = $2;
3007			$$->uid[1] = $2;
3008			$$->op = $1;
3009			$$->next = NULL;
3010			$$->tail = $$;
3011		}
3012		| uid PORTBINARY uid		{
3013			if ($1 == UID_MAX || $3 == UID_MAX) {
3014				yyerror("user unknown requires operator = or "
3015				    "!=");
3016				YYERROR;
3017			}
3018			$$ = calloc(1, sizeof(struct node_uid));
3019			if ($$ == NULL)
3020				err(1, "uid_item: calloc");
3021			$$->uid[0] = $1;
3022			$$->uid[1] = $3;
3023			$$->op = $2;
3024			$$->next = NULL;
3025			$$->tail = $$;
3026		}
3027		;
3028
3029uid		: STRING			{
3030			if (!strcmp($1, "unknown"))
3031				$$ = UID_MAX;
3032			else {
3033				struct passwd	*pw;
3034
3035				if ((pw = getpwnam($1)) == NULL) {
3036					yyerror("unknown user %s", $1);
3037					free($1);
3038					YYERROR;
3039				}
3040				$$ = pw->pw_uid;
3041			}
3042			free($1);
3043		}
3044		| NUMBER			{
3045			if ($1 < 0 || $1 >= UID_MAX) {
3046				yyerror("illegal uid value %lu", $1);
3047				YYERROR;
3048			}
3049			$$ = $1;
3050		}
3051		;
3052
3053gids		: gid_item			{ $$ = $1; }
3054		| '{' optnl gid_list '}'	{ $$ = $3; }
3055		;
3056
3057gid_list	: gid_item optnl		{ $$ = $1; }
3058		| gid_list comma gid_item optnl	{
3059			$1->tail->next = $3;
3060			$1->tail = $3;
3061			$$ = $1;
3062		}
3063		;
3064
3065gid_item	: gid				{
3066			$$ = calloc(1, sizeof(struct node_gid));
3067			if ($$ == NULL)
3068				err(1, "gid_item: calloc");
3069			$$->gid[0] = $1;
3070			$$->gid[1] = $1;
3071			$$->op = PF_OP_EQ;
3072			$$->next = NULL;
3073			$$->tail = $$;
3074		}
3075		| unaryop gid			{
3076			if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3077				yyerror("group unknown requires operator = or "
3078				    "!=");
3079				YYERROR;
3080			}
3081			$$ = calloc(1, sizeof(struct node_gid));
3082			if ($$ == NULL)
3083				err(1, "gid_item: calloc");
3084			$$->gid[0] = $2;
3085			$$->gid[1] = $2;
3086			$$->op = $1;
3087			$$->next = NULL;
3088			$$->tail = $$;
3089		}
3090		| gid PORTBINARY gid		{
3091			if ($1 == GID_MAX || $3 == GID_MAX) {
3092				yyerror("group unknown requires operator = or "
3093				    "!=");
3094				YYERROR;
3095			}
3096			$$ = calloc(1, sizeof(struct node_gid));
3097			if ($$ == NULL)
3098				err(1, "gid_item: calloc");
3099			$$->gid[0] = $1;
3100			$$->gid[1] = $3;
3101			$$->op = $2;
3102			$$->next = NULL;
3103			$$->tail = $$;
3104		}
3105		;
3106
3107gid		: STRING			{
3108			if (!strcmp($1, "unknown"))
3109				$$ = GID_MAX;
3110			else {
3111				struct group	*grp;
3112
3113				if ((grp = getgrnam($1)) == NULL) {
3114					yyerror("unknown group %s", $1);
3115					free($1);
3116					YYERROR;
3117				}
3118				$$ = grp->gr_gid;
3119			}
3120			free($1);
3121		}
3122		| NUMBER			{
3123			if ($1 < 0 || $1 >= GID_MAX) {
3124				yyerror("illegal gid value %lu", $1);
3125				YYERROR;
3126			}
3127			$$ = $1;
3128		}
3129		;
3130
3131flag		: STRING			{
3132			int	f;
3133
3134			if ((f = parse_flags($1)) < 0) {
3135				yyerror("bad flags %s", $1);
3136				free($1);
3137				YYERROR;
3138			}
3139			free($1);
3140			$$.b1 = f;
3141		}
3142		;
3143
3144flags		: FLAGS flag '/' flag	{ $$.b1 = $2.b1; $$.b2 = $4.b1; }
3145		| FLAGS '/' flag	{ $$.b1 = 0; $$.b2 = $3.b1; }
3146		| FLAGS ANY		{ $$.b1 = 0; $$.b2 = 0; }
3147		;
3148
3149icmpspec	: ICMPTYPE icmp_item			{ $$ = $2; }
3150		| ICMPTYPE '{' optnl icmp_list '}'	{ $$ = $4; }
3151		| ICMP6TYPE icmp6_item			{ $$ = $2; }
3152		| ICMP6TYPE '{' optnl icmp6_list '}'	{ $$ = $4; }
3153		;
3154
3155icmp_list	: icmp_item optnl		{ $$ = $1; }
3156		| icmp_list comma icmp_item optnl {
3157			$1->tail->next = $3;
3158			$1->tail = $3;
3159			$$ = $1;
3160		}
3161		;
3162
3163icmp6_list	: icmp6_item optnl		{ $$ = $1; }
3164		| icmp6_list comma icmp6_item optnl {
3165			$1->tail->next = $3;
3166			$1->tail = $3;
3167			$$ = $1;
3168		}
3169		;
3170
3171icmp_item	: icmptype		{
3172			$$ = calloc(1, sizeof(struct node_icmp));
3173			if ($$ == NULL)
3174				err(1, "icmp_item: calloc");
3175			$$->type = $1;
3176			$$->code = 0;
3177			$$->proto = IPPROTO_ICMP;
3178			$$->next = NULL;
3179			$$->tail = $$;
3180		}
3181		| icmptype CODE STRING	{
3182			const struct icmpcodeent	*p;
3183
3184			if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3185				yyerror("unknown icmp-code %s", $3);
3186				free($3);
3187				YYERROR;
3188			}
3189
3190			free($3);
3191			$$ = calloc(1, sizeof(struct node_icmp));
3192			if ($$ == NULL)
3193				err(1, "icmp_item: calloc");
3194			$$->type = $1;
3195			$$->code = p->code + 1;
3196			$$->proto = IPPROTO_ICMP;
3197			$$->next = NULL;
3198			$$->tail = $$;
3199		}
3200		| icmptype CODE NUMBER	{
3201			if ($3 < 0 || $3 > 255) {
3202				yyerror("illegal icmp-code %lu", $3);
3203				YYERROR;
3204			}
3205			$$ = calloc(1, sizeof(struct node_icmp));
3206			if ($$ == NULL)
3207				err(1, "icmp_item: calloc");
3208			$$->type = $1;
3209			$$->code = $3 + 1;
3210			$$->proto = IPPROTO_ICMP;
3211			$$->next = NULL;
3212			$$->tail = $$;
3213		}
3214		;
3215
3216icmp6_item	: icmp6type		{
3217			$$ = calloc(1, sizeof(struct node_icmp));
3218			if ($$ == NULL)
3219				err(1, "icmp_item: calloc");
3220			$$->type = $1;
3221			$$->code = 0;
3222			$$->proto = IPPROTO_ICMPV6;
3223			$$->next = NULL;
3224			$$->tail = $$;
3225		}
3226		| icmp6type CODE STRING	{
3227			const struct icmpcodeent	*p;
3228
3229			if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3230				yyerror("unknown icmp6-code %s", $3);
3231				free($3);
3232				YYERROR;
3233			}
3234			free($3);
3235
3236			$$ = calloc(1, sizeof(struct node_icmp));
3237			if ($$ == NULL)
3238				err(1, "icmp_item: calloc");
3239			$$->type = $1;
3240			$$->code = p->code + 1;
3241			$$->proto = IPPROTO_ICMPV6;
3242			$$->next = NULL;
3243			$$->tail = $$;
3244		}
3245		| icmp6type CODE NUMBER	{
3246			if ($3 < 0 || $3 > 255) {
3247				yyerror("illegal icmp-code %lu", $3);
3248				YYERROR;
3249			}
3250			$$ = calloc(1, sizeof(struct node_icmp));
3251			if ($$ == NULL)
3252				err(1, "icmp_item: calloc");
3253			$$->type = $1;
3254			$$->code = $3 + 1;
3255			$$->proto = IPPROTO_ICMPV6;
3256			$$->next = NULL;
3257			$$->tail = $$;
3258		}
3259		;
3260
3261icmptype	: STRING			{
3262			const struct icmptypeent	*p;
3263
3264			if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
3265				yyerror("unknown icmp-type %s", $1);
3266				free($1);
3267				YYERROR;
3268			}
3269			$$ = p->type + 1;
3270			free($1);
3271		}
3272		| NUMBER			{
3273			if ($1 < 0 || $1 > 255) {
3274				yyerror("illegal icmp-type %lu", $1);
3275				YYERROR;
3276			}
3277			$$ = $1 + 1;
3278		}
3279		;
3280
3281icmp6type	: STRING			{
3282			const struct icmptypeent	*p;
3283
3284			if ((p = geticmptypebyname($1, AF_INET6)) ==
3285			    NULL) {
3286				yyerror("unknown icmp6-type %s", $1);
3287				free($1);
3288				YYERROR;
3289			}
3290			$$ = p->type + 1;
3291			free($1);
3292		}
3293		| NUMBER			{
3294			if ($1 < 0 || $1 > 255) {
3295				yyerror("illegal icmp6-type %lu", $1);
3296				YYERROR;
3297			}
3298			$$ = $1 + 1;
3299		}
3300		;
3301
3302tos	: STRING			{
3303			int val;
3304			if (map_tos($1, &val))
3305				$$ = val;
3306			else if ($1[0] == '0' && $1[1] == 'x')
3307				$$ = strtoul($1, NULL, 16);
3308			else
3309				$$ = 256;		/* flag bad argument */
3310			if ($$ > 255) {
3311				yyerror("illegal tos value %s", $1);
3312				free($1);
3313				YYERROR;
3314			}
3315			free($1);
3316		}
3317		| NUMBER			{
3318			$$ = $1;
3319			if ($$ > 255) {
3320				yyerror("illegal tos value %s", $1);
3321				YYERROR;
3322			}
3323		}
3324		;
3325
3326sourcetrack	: SOURCETRACK		{ $$ = PF_SRCTRACK; }
3327		| SOURCETRACK GLOBAL	{ $$ = PF_SRCTRACK_GLOBAL; }
3328		| SOURCETRACK RULE	{ $$ = PF_SRCTRACK_RULE; }
3329		;
3330
3331statelock	: IFBOUND {
3332			$$ = PFRULE_IFBOUND;
3333		}
3334		| FLOATING {
3335			$$ = 0;
3336		}
3337		;
3338
3339keep		: NO STATE			{
3340			$$.action = 0;
3341			$$.options = NULL;
3342		}
3343		| KEEP STATE state_opt_spec	{
3344			$$.action = PF_STATE_NORMAL;
3345			$$.options = $3;
3346		}
3347		| MODULATE STATE state_opt_spec {
3348			$$.action = PF_STATE_MODULATE;
3349			$$.options = $3;
3350		}
3351		| SYNPROXY STATE state_opt_spec {
3352			$$.action = PF_STATE_SYNPROXY;
3353			$$.options = $3;
3354		}
3355		;
3356
3357flush		: /* empty */			{ $$ = 0; }
3358		| FLUSH				{ $$ = PF_FLUSH; }
3359		| FLUSH GLOBAL			{
3360			$$ = PF_FLUSH | PF_FLUSH_GLOBAL;
3361		}
3362		;
3363
3364state_opt_spec	: '(' state_opt_list ')'	{ $$ = $2; }
3365		| /* empty */			{ $$ = NULL; }
3366		;
3367
3368state_opt_list	: state_opt_item		{ $$ = $1; }
3369		| state_opt_list comma state_opt_item {
3370			$1->tail->next = $3;
3371			$1->tail = $3;
3372			$$ = $1;
3373		}
3374		;
3375
3376state_opt_item	: MAXIMUM NUMBER		{
3377			if ($2 < 0 || $2 > UINT_MAX) {
3378				yyerror("only positive values permitted");
3379				YYERROR;
3380			}
3381			$$ = calloc(1, sizeof(struct node_state_opt));
3382			if ($$ == NULL)
3383				err(1, "state_opt_item: calloc");
3384			$$->type = PF_STATE_OPT_MAX;
3385			$$->data.max_states = $2;
3386			$$->next = NULL;
3387			$$->tail = $$;
3388		}
3389		| NOSYNC				{
3390			$$ = calloc(1, sizeof(struct node_state_opt));
3391			if ($$ == NULL)
3392				err(1, "state_opt_item: calloc");
3393			$$->type = PF_STATE_OPT_NOSYNC;
3394			$$->next = NULL;
3395			$$->tail = $$;
3396		}
3397		| MAXSRCSTATES NUMBER			{
3398			if ($2 < 0 || $2 > UINT_MAX) {
3399				yyerror("only positive values permitted");
3400				YYERROR;
3401			}
3402			$$ = calloc(1, sizeof(struct node_state_opt));
3403			if ($$ == NULL)
3404				err(1, "state_opt_item: calloc");
3405			$$->type = PF_STATE_OPT_MAX_SRC_STATES;
3406			$$->data.max_src_states = $2;
3407			$$->next = NULL;
3408			$$->tail = $$;
3409		}
3410		| MAXSRCCONN NUMBER			{
3411			if ($2 < 0 || $2 > UINT_MAX) {
3412				yyerror("only positive values permitted");
3413				YYERROR;
3414			}
3415			$$ = calloc(1, sizeof(struct node_state_opt));
3416			if ($$ == NULL)
3417				err(1, "state_opt_item: calloc");
3418			$$->type = PF_STATE_OPT_MAX_SRC_CONN;
3419			$$->data.max_src_conn = $2;
3420			$$->next = NULL;
3421			$$->tail = $$;
3422		}
3423		| MAXSRCCONNRATE NUMBER '/' NUMBER	{
3424			if ($2 < 0 || $2 > UINT_MAX ||
3425			    $4 < 0 || $4 > UINT_MAX) {
3426				yyerror("only positive values permitted");
3427				YYERROR;
3428			}
3429			$$ = calloc(1, sizeof(struct node_state_opt));
3430			if ($$ == NULL)
3431				err(1, "state_opt_item: calloc");
3432			$$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
3433			$$->data.max_src_conn_rate.limit = $2;
3434			$$->data.max_src_conn_rate.seconds = $4;
3435			$$->next = NULL;
3436			$$->tail = $$;
3437		}
3438		| OVERLOAD '<' STRING '>' flush		{
3439			if (strlen($3) >= PF_TABLE_NAME_SIZE) {
3440				yyerror("table name '%s' too long", $3);
3441				free($3);
3442				YYERROR;
3443			}
3444			$$ = calloc(1, sizeof(struct node_state_opt));
3445			if ($$ == NULL)
3446				err(1, "state_opt_item: calloc");
3447			if (strlcpy($$->data.overload.tblname, $3,
3448			    PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
3449				errx(1, "state_opt_item: strlcpy");
3450			free($3);
3451			$$->type = PF_STATE_OPT_OVERLOAD;
3452			$$->data.overload.flush = $5;
3453			$$->next = NULL;
3454			$$->tail = $$;
3455		}
3456		| MAXSRCNODES NUMBER			{
3457			if ($2 < 0 || $2 > UINT_MAX) {
3458				yyerror("only positive values permitted");
3459				YYERROR;
3460			}
3461			$$ = calloc(1, sizeof(struct node_state_opt));
3462			if ($$ == NULL)
3463				err(1, "state_opt_item: calloc");
3464			$$->type = PF_STATE_OPT_MAX_SRC_NODES;
3465			$$->data.max_src_nodes = $2;
3466			$$->next = NULL;
3467			$$->tail = $$;
3468		}
3469		| sourcetrack {
3470			$$ = calloc(1, sizeof(struct node_state_opt));
3471			if ($$ == NULL)
3472				err(1, "state_opt_item: calloc");
3473			$$->type = PF_STATE_OPT_SRCTRACK;
3474			$$->data.src_track = $1;
3475			$$->next = NULL;
3476			$$->tail = $$;
3477		}
3478		| statelock {
3479			$$ = calloc(1, sizeof(struct node_state_opt));
3480			if ($$ == NULL)
3481				err(1, "state_opt_item: calloc");
3482			$$->type = PF_STATE_OPT_STATELOCK;
3483			$$->data.statelock = $1;
3484			$$->next = NULL;
3485			$$->tail = $$;
3486		}
3487		| SLOPPY {
3488			$$ = calloc(1, sizeof(struct node_state_opt));
3489			if ($$ == NULL)
3490				err(1, "state_opt_item: calloc");
3491			$$->type = PF_STATE_OPT_SLOPPY;
3492			$$->next = NULL;
3493			$$->tail = $$;
3494		}
3495		| PFLOW {
3496			$$ = calloc(1, sizeof(struct node_state_opt));
3497			if ($$ == NULL)
3498				err(1, "state_opt_item: calloc");
3499			$$->type = PF_STATE_OPT_PFLOW;
3500			$$->next = NULL;
3501			$$->tail = $$;
3502		}
3503		| STRING NUMBER			{
3504			int	i;
3505
3506			if ($2 < 0 || $2 > UINT_MAX) {
3507				yyerror("only positive values permitted");
3508				YYERROR;
3509			}
3510			for (i = 0; pf_timeouts[i].name &&
3511			    strcmp(pf_timeouts[i].name, $1); ++i)
3512				;	/* nothing */
3513			if (!pf_timeouts[i].name) {
3514				yyerror("illegal timeout name %s", $1);
3515				free($1);
3516				YYERROR;
3517			}
3518			if (strchr(pf_timeouts[i].name, '.') == NULL) {
3519				yyerror("illegal state timeout %s", $1);
3520				free($1);
3521				YYERROR;
3522			}
3523			free($1);
3524			$$ = calloc(1, sizeof(struct node_state_opt));
3525			if ($$ == NULL)
3526				err(1, "state_opt_item: calloc");
3527			$$->type = PF_STATE_OPT_TIMEOUT;
3528			$$->data.timeout.number = pf_timeouts[i].timeout;
3529			$$->data.timeout.seconds = $2;
3530			$$->next = NULL;
3531			$$->tail = $$;
3532		}
3533		;
3534
3535label		: LABEL STRING			{
3536			$$ = $2;
3537		}
3538		;
3539
3540qname		: QUEUE STRING				{
3541			$$.qname = $2;
3542			$$.pqname = NULL;
3543		}
3544		| QUEUE '(' STRING ')'			{
3545			$$.qname = $3;
3546			$$.pqname = NULL;
3547		}
3548		| QUEUE '(' STRING comma STRING ')'	{
3549			$$.qname = $3;
3550			$$.pqname = $5;
3551		}
3552		;
3553
3554portstar	: numberstring			{
3555			if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
3556				free($1);
3557				YYERROR;
3558			}
3559			free($1);
3560		}
3561		;
3562
3563redirspec	: host				{ $$ = $1; }
3564		| '{' optnl redir_host_list '}'	{ $$ = $3; }
3565		;
3566
3567redir_host_list	: host optnl			{ $$ = $1; }
3568		| redir_host_list comma host optnl {
3569			$1->tail->next = $3;
3570			$1->tail = $3->tail;
3571			$$ = $1;
3572		}
3573		;
3574
3575redirpool	: redirspec		{
3576			$$ = calloc(1, sizeof(struct redirection));
3577			if ($$ == NULL)
3578				err(1, "redirection: calloc");
3579			$$->host = $1;
3580			$$->rport.a = $$->rport.b = $$->rport.t = 0;
3581		}
3582		| redirspec PORT portstar	{
3583			$$ = calloc(1, sizeof(struct redirection));
3584			if ($$ == NULL)
3585				err(1, "redirection: calloc");
3586			$$->host = $1;
3587			$$->rport = $3;
3588		}
3589		;
3590
3591hashkey		: /* empty */
3592		{
3593			$$ = calloc(1, sizeof(struct pf_poolhashkey));
3594			if ($$ == NULL)
3595				err(1, "hashkey: calloc");
3596			$$->key32[0] = arc4random();
3597			$$->key32[1] = arc4random();
3598			$$->key32[2] = arc4random();
3599			$$->key32[3] = arc4random();
3600		}
3601		| string
3602		{
3603			if (!strncmp($1, "0x", 2)) {
3604				if (strlen($1) != 34) {
3605					free($1);
3606					yyerror("hex key must be 128 bits "
3607						"(32 hex digits) long");
3608					YYERROR;
3609				}
3610				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3611				if ($$ == NULL)
3612					err(1, "hashkey: calloc");
3613
3614				if (sscanf($1, "0x%8x%8x%8x%8x",
3615				    &$$->key32[0], &$$->key32[1],
3616				    &$$->key32[2], &$$->key32[3]) != 4) {
3617					free($$);
3618					free($1);
3619					yyerror("invalid hex key");
3620					YYERROR;
3621				}
3622			} else {
3623				MD5_CTX	context;
3624
3625				$$ = calloc(1, sizeof(struct pf_poolhashkey));
3626				if ($$ == NULL)
3627					err(1, "hashkey: calloc");
3628				MD5Init(&context);
3629				MD5Update(&context, (unsigned char *)$1,
3630				    strlen($1));
3631				MD5Final((unsigned char *)$$, &context);
3632				HTONL($$->key32[0]);
3633				HTONL($$->key32[1]);
3634				HTONL($$->key32[2]);
3635				HTONL($$->key32[3]);
3636			}
3637			free($1);
3638		}
3639		;
3640
3641pool_opts	:	{ bzero(&pool_opts, sizeof pool_opts); }
3642		    pool_opts_l
3643			{ $$ = pool_opts; }
3644		| /* empty */	{
3645			bzero(&pool_opts, sizeof pool_opts);
3646			$$ = pool_opts;
3647		}
3648		;
3649
3650pool_opts_l	: pool_opts_l pool_opt
3651		| pool_opt
3652		;
3653
3654pool_opt	: BITMASK	{
3655			if (pool_opts.type) {
3656				yyerror("pool type cannot be redefined");
3657				YYERROR;
3658			}
3659			pool_opts.type =  PF_POOL_BITMASK;
3660		}
3661		| RANDOM	{
3662			if (pool_opts.type) {
3663				yyerror("pool type cannot be redefined");
3664				YYERROR;
3665			}
3666			pool_opts.type = PF_POOL_RANDOM;
3667		}
3668		| SOURCEHASH hashkey {
3669			if (pool_opts.type) {
3670				yyerror("pool type cannot be redefined");
3671				YYERROR;
3672			}
3673			pool_opts.type = PF_POOL_SRCHASH;
3674			pool_opts.key = $2;
3675		}
3676		| ROUNDROBIN	{
3677			if (pool_opts.type) {
3678				yyerror("pool type cannot be redefined");
3679				YYERROR;
3680			}
3681			pool_opts.type = PF_POOL_ROUNDROBIN;
3682		}
3683		| STATICPORT	{
3684			if (pool_opts.staticport) {
3685				yyerror("static-port cannot be redefined");
3686				YYERROR;
3687			}
3688			pool_opts.staticport = 1;
3689		}
3690		| STICKYADDRESS	{
3691			if (filter_opts.marker & POM_STICKYADDRESS) {
3692				yyerror("sticky-address cannot be redefined");
3693				YYERROR;
3694			}
3695			pool_opts.marker |= POM_STICKYADDRESS;
3696			pool_opts.opts |= PF_POOL_STICKYADDR;
3697		}
3698		;
3699
3700route_host	: STRING			{
3701			$$ = calloc(1, sizeof(struct node_host));
3702			if ($$ == NULL)
3703				err(1, "route_host: calloc");
3704			$$->ifname = $1;
3705			$$->addr.type = PF_ADDR_DYNIFTL;
3706			set_ipmask($$, 128);
3707			$$->next = NULL;
3708			$$->tail = $$;
3709		}
3710		| '(' STRING host ')'		{
3711			$$ = $3;
3712			$$->ifname = $2;
3713		}
3714		;
3715
3716route_host_list	: route_host optnl			{ $$ = $1; }
3717		| route_host_list comma route_host optnl {
3718			if ($1->af == 0)
3719				$1->af = $3->af;
3720			if ($1->af != $3->af) {
3721				yyerror("all pool addresses must be in the "
3722				    "same address family");
3723				YYERROR;
3724			}
3725			$1->tail->next = $3;
3726			$1->tail = $3->tail;
3727			$$ = $1;
3728		}
3729		;
3730
3731routespec	: route_host			{ $$ = $1; }
3732		| '{' optnl route_host_list '}'	{ $$ = $3; }
3733		;
3734
3735timeout_spec	: STRING NUMBER
3736		{
3737			if (check_rulestate(PFCTL_STATE_OPTION)) {
3738				free($1);
3739				YYERROR;
3740			}
3741			if ($2 < 0 || $2 > UINT_MAX) {
3742				yyerror("only positive values permitted");
3743				YYERROR;
3744			}
3745			if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
3746				yyerror("unknown timeout %s", $1);
3747				free($1);
3748				YYERROR;
3749			}
3750			free($1);
3751		}
3752		;
3753
3754timeout_list	: timeout_list comma timeout_spec optnl
3755		| timeout_spec optnl
3756		;
3757
3758limit_spec	: STRING NUMBER
3759		{
3760			if (check_rulestate(PFCTL_STATE_OPTION)) {
3761				free($1);
3762				YYERROR;
3763			}
3764			if ($2 < 0 || $2 > UINT_MAX) {
3765				yyerror("only positive values permitted");
3766				YYERROR;
3767			}
3768			if (pfctl_set_limit(pf, $1, $2) != 0) {
3769				yyerror("unable to set limit %s %u", $1, $2);
3770				free($1);
3771				YYERROR;
3772			}
3773			free($1);
3774		}
3775		;
3776
3777limit_list	: limit_list comma limit_spec optnl
3778		| limit_spec optnl
3779		;
3780
3781comma		: ','
3782		| /* empty */
3783		;
3784
3785yesno		: NO			{ $$ = 0; }
3786		| STRING		{
3787			if (!strcmp($1, "yes"))
3788				$$ = 1;
3789			else {
3790				yyerror("invalid value '%s', expected 'yes' "
3791				    "or 'no'", $1);
3792				free($1);
3793				YYERROR;
3794			}
3795			free($1);
3796		}
3797		;
3798
3799unaryop		: '='		{ $$ = PF_OP_EQ; }
3800		| '!' '='	{ $$ = PF_OP_NE; }
3801		| '<' '='	{ $$ = PF_OP_LE; }
3802		| '<'		{ $$ = PF_OP_LT; }
3803		| '>' '='	{ $$ = PF_OP_GE; }
3804		| '>'		{ $$ = PF_OP_GT; }
3805		;
3806
3807%%
3808
3809int
3810yyerror(const char *fmt, ...)
3811{
3812	va_list		 ap;
3813
3814	file->errors++;
3815	va_start(ap, fmt);
3816	fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
3817	vfprintf(stderr, fmt, ap);
3818	fprintf(stderr, "\n");
3819	va_end(ap);
3820	return (0);
3821}
3822
3823int
3824disallow_table(struct node_host *h, const char *fmt)
3825{
3826	for (; h != NULL; h = h->next)
3827		if (h->addr.type == PF_ADDR_TABLE) {
3828			yyerror(fmt, h->addr.v.tblname);
3829			return (1);
3830		}
3831	return (0);
3832}
3833
3834int
3835disallow_urpf_failed(struct node_host *h, const char *fmt)
3836{
3837	for (; h != NULL; h = h->next)
3838		if (h->addr.type == PF_ADDR_URPFFAILED) {
3839			yyerror(fmt);
3840			return (1);
3841		}
3842	return (0);
3843}
3844
3845int
3846disallow_alias(struct node_host *h, const char *fmt)
3847{
3848	for (; h != NULL; h = h->next)
3849		if (DYNIF_MULTIADDR(h->addr)) {
3850			yyerror(fmt, h->addr.v.tblname);
3851			return (1);
3852		}
3853	return (0);
3854}
3855
3856int
3857rule_consistent(struct pf_rule *r, int anchor_call)
3858{
3859	int	problems = 0;
3860
3861	if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
3862	    (r->src.port_op || r->dst.port_op)) {
3863		yyerror("port only applies to tcp/udp");
3864		problems++;
3865	}
3866	if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
3867	    (r->type || r->code)) {
3868		yyerror("icmp-type/code only applies to icmp");
3869		problems++;
3870	}
3871	if (!r->af && (r->type || r->code)) {
3872		yyerror("must indicate address family with icmp-type/code");
3873		problems++;
3874	}
3875	if (r->overload_tblname[0] &&
3876	    r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
3877		yyerror("'overload' requires 'max-src-conn' "
3878		    "or 'max-src-conn-rate'");
3879		problems++;
3880	}
3881	if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
3882	    (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
3883		yyerror("proto %s doesn't match address family %s",
3884		    r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
3885		    r->af == AF_INET ? "inet" : "inet6");
3886		problems++;
3887	}
3888	if (r->allow_opts && r->action != PF_PASS) {
3889		yyerror("allow-opts can only be specified for pass rules");
3890		problems++;
3891	}
3892	if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
3893	    r->dst.port_op || r->flagset || r->type || r->code)) {
3894		yyerror("fragments can be filtered only on IP header fields");
3895		problems++;
3896	}
3897	if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
3898		yyerror("return-rst can only be applied to TCP rules");
3899		problems++;
3900	}
3901	if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
3902		yyerror("max-src-nodes requires 'source-track rule'");
3903		problems++;
3904	}
3905	if (r->action != PF_PASS && r->keep_state) {
3906		yyerror("keep state is great, but only for pass rules");
3907		problems++;
3908	}
3909	if (r->rule_flag & PFRULE_STATESLOPPY &&
3910	    (r->keep_state == PF_STATE_MODULATE ||
3911	    r->keep_state == PF_STATE_SYNPROXY)) {
3912		yyerror("sloppy state matching cannot be used with "
3913		    "synproxy state or modulate state");
3914		problems++;
3915	}
3916	if ((!TAILQ_EMPTY(&r->nat.list) ||
3917	    (!r->rt && !TAILQ_EMPTY(&r->rdr.list)))  &&
3918	    r->action != PF_MATCH && !r->keep_state) {
3919		yyerror("nat-to and rdr-to require keep state");
3920		problems++;
3921	}
3922	if (!TAILQ_EMPTY(&r->nat.list) && r->direction != PF_OUT) {
3923		yyerror("nat-to can only be used outbound");
3924		problems++;
3925	}
3926	if (!r->rt && !TAILQ_EMPTY(&r->rdr.list) && r->direction != PF_IN) {
3927		yyerror("rdr-to can only be used inbound");
3928		problems++;
3929	}
3930
3931	/* match rules rules */
3932	if (r->action == PF_MATCH) {
3933		if (r->divert.port) {
3934			yyerror("divert is not supported on match rules");
3935			problems++;
3936		}
3937		if (r->divert_packet.port) {
3938			yyerror("divert is not supported on match rules");
3939			problems++;
3940		}
3941		if (r->rt) {
3942			yyerror("route-to, reply-to, dup-to and fastroute "
3943			   "must not be used on match rules");
3944			problems++;
3945		}
3946	}
3947	return (-problems);
3948}
3949
3950int
3951process_tabledef(char *name, struct table_opts *opts)
3952{
3953	struct pfr_buffer	 ab;
3954	struct node_tinit	*ti;
3955
3956	bzero(&ab, sizeof(ab));
3957	ab.pfrb_type = PFRB_ADDRS;
3958	SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
3959		if (ti->file)
3960			if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
3961				if (errno)
3962					yyerror("cannot load \"%s\": %s",
3963					    ti->file, strerror(errno));
3964				else
3965					yyerror("file \"%s\" contains bad data",
3966					    ti->file);
3967				goto _error;
3968			}
3969		if (ti->host)
3970			if (append_addr_host(&ab, ti->host, 0, 0)) {
3971				yyerror("cannot create address buffer: %s",
3972				    strerror(errno));
3973				goto _error;
3974			}
3975	}
3976	if (pf->opts & PF_OPT_VERBOSE)
3977		print_tabledef(name, opts->flags, opts->init_addr,
3978		    &opts->init_nodes);
3979	if (!(pf->opts & PF_OPT_NOACTION) &&
3980	    pfctl_define_table(name, opts->flags, opts->init_addr,
3981	    pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
3982		yyerror("cannot define table %s: %s", name,
3983		    pfr_strerror(errno));
3984		goto _error;
3985	}
3986	pf->tdirty = 1;
3987	pfr_buf_clear(&ab);
3988	return (0);
3989_error:
3990	pfr_buf_clear(&ab);
3991	return (-1);
3992}
3993
3994struct keywords {
3995	const char	*k_name;
3996	int		 k_val;
3997};
3998
3999/* macro gore, but you should've seen the prior indentation nightmare... */
4000
4001#define FREE_LIST(T,r) \
4002	do { \
4003		T *p, *node = r; \
4004		while (node != NULL) { \
4005			p = node; \
4006			node = node->next; \
4007			free(p); \
4008		} \
4009	} while (0)
4010
4011#define LOOP_THROUGH(T,n,r,C) \
4012	do { \
4013		T *n; \
4014		if (r == NULL) { \
4015			r = calloc(1, sizeof(T)); \
4016			if (r == NULL) \
4017				err(1, "LOOP: calloc"); \
4018			r->next = NULL; \
4019		} \
4020		n = r; \
4021		while (n != NULL) { \
4022			do { \
4023				C; \
4024			} while (0); \
4025			n = n->next; \
4026		} \
4027	} while (0)
4028
4029void
4030expand_label_str(char *label, size_t len, const char *srch, const char *repl)
4031{
4032	char *tmp;
4033	char *p, *q;
4034
4035	if ((tmp = calloc(1, len)) == NULL)
4036		err(1, "expand_label_str: calloc");
4037	p = q = label;
4038	while ((q = strstr(p, srch)) != NULL) {
4039		*q = '\0';
4040		if ((strlcat(tmp, p, len) >= len) ||
4041		    (strlcat(tmp, repl, len) >= len))
4042			errx(1, "expand_label: label too long");
4043		q += strlen(srch);
4044		p = q;
4045	}
4046	if (strlcat(tmp, p, len) >= len)
4047		errx(1, "expand_label: label too long");
4048	strlcpy(label, tmp, len);	/* always fits */
4049	free(tmp);
4050}
4051
4052void
4053expand_label_if(const char *name, char *label, size_t len, const char *ifname)
4054{
4055	if (strstr(label, name) != NULL) {
4056		if (!*ifname)
4057			expand_label_str(label, len, name, "any");
4058		else
4059			expand_label_str(label, len, name, ifname);
4060	}
4061}
4062
4063void
4064expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
4065    struct node_host *h)
4066{
4067	char tmp[64], tmp_not[66];
4068
4069	if (strstr(label, name) != NULL) {
4070		switch (h->addr.type) {
4071		case PF_ADDR_DYNIFTL:
4072			snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname);
4073			break;
4074		case PF_ADDR_TABLE:
4075			snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname);
4076			break;
4077		case PF_ADDR_NOROUTE:
4078			snprintf(tmp, sizeof(tmp), "no-route");
4079			break;
4080		case PF_ADDR_URPFFAILED:
4081			snprintf(tmp, sizeof(tmp), "urpf-failed");
4082			break;
4083		case PF_ADDR_ADDRMASK:
4084			if (!af || (PF_AZERO(&h->addr.v.a.addr, af) &&
4085			    PF_AZERO(&h->addr.v.a.mask, af)))
4086				snprintf(tmp, sizeof(tmp), "any");
4087			else {
4088				char	a[48];
4089				int	bits;
4090
4091				if (inet_ntop(af, &h->addr.v.a.addr, a,
4092				    sizeof(a)) == NULL)
4093					snprintf(tmp, sizeof(tmp), "?");
4094				else {
4095					bits = unmask(&h->addr.v.a.mask, af);
4096					if ((af == AF_INET && bits < 32) ||
4097					    (af == AF_INET6 && bits < 128))
4098						snprintf(tmp, sizeof(tmp),
4099						    "%s/%d", a, bits);
4100					else
4101						snprintf(tmp, sizeof(tmp),
4102						    "%s", a);
4103				}
4104			}
4105			break;
4106		default:
4107			snprintf(tmp, sizeof(tmp), "?");
4108			break;
4109		}
4110
4111		if (h->not) {
4112			snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
4113			expand_label_str(label, len, name, tmp_not);
4114		} else
4115			expand_label_str(label, len, name, tmp);
4116	}
4117}
4118
4119void
4120expand_label_port(const char *name, char *label, size_t len,
4121    struct node_port *port)
4122{
4123	char	 a1[6], a2[6], op[13] = "";
4124
4125	if (strstr(label, name) != NULL) {
4126		snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0]));
4127		snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1]));
4128		if (!port->op)
4129			;
4130		else if (port->op == PF_OP_IRG)
4131			snprintf(op, sizeof(op), "%s><%s", a1, a2);
4132		else if (port->op == PF_OP_XRG)
4133			snprintf(op, sizeof(op), "%s<>%s", a1, a2);
4134		else if (port->op == PF_OP_EQ)
4135			snprintf(op, sizeof(op), "%s", a1);
4136		else if (port->op == PF_OP_NE)
4137			snprintf(op, sizeof(op), "!=%s", a1);
4138		else if (port->op == PF_OP_LT)
4139			snprintf(op, sizeof(op), "<%s", a1);
4140		else if (port->op == PF_OP_LE)
4141			snprintf(op, sizeof(op), "<=%s", a1);
4142		else if (port->op == PF_OP_GT)
4143			snprintf(op, sizeof(op), ">%s", a1);
4144		else if (port->op == PF_OP_GE)
4145			snprintf(op, sizeof(op), ">=%s", a1);
4146		expand_label_str(label, len, name, op);
4147	}
4148}
4149
4150void
4151expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
4152{
4153	struct protoent *pe;
4154	char n[4];
4155
4156	if (strstr(label, name) != NULL) {
4157		pe = getprotobynumber(proto);
4158		if (pe != NULL)
4159			expand_label_str(label, len, name, pe->p_name);
4160		else {
4161			snprintf(n, sizeof(n), "%u", proto);
4162			expand_label_str(label, len, name, n);
4163		}
4164	}
4165}
4166
4167void
4168expand_label_nr(const char *name, char *label, size_t len)
4169{
4170	char n[11];
4171
4172	if (strstr(label, name) != NULL) {
4173		snprintf(n, sizeof(n), "%u", pf->anchor->match);
4174		expand_label_str(label, len, name, n);
4175	}
4176}
4177
4178void
4179expand_label(char *label, size_t len, const char *ifname, sa_family_t af,
4180    struct node_host *src_host, struct node_port *src_port,
4181    struct node_host *dst_host, struct node_port *dst_port,
4182    u_int8_t proto)
4183{
4184	expand_label_if("$if", label, len, ifname);
4185	expand_label_addr("$srcaddr", label, len, af, src_host);
4186	expand_label_addr("$dstaddr", label, len, af, dst_host);
4187	expand_label_port("$srcport", label, len, src_port);
4188	expand_label_port("$dstport", label, len, dst_port);
4189	expand_label_proto("$proto", label, len, proto);
4190	expand_label_nr("$nr", label, len);
4191}
4192
4193int
4194expand_altq(struct pf_altq *a, struct node_if *interfaces,
4195    struct node_queue *nqueues, struct node_queue_bw bwspec,
4196    struct node_queue_opt *opts)
4197{
4198	struct pf_altq		 pa, pb;
4199	char			 qname[PF_QNAME_SIZE];
4200	struct node_queue	*n;
4201	struct node_queue_bw	 bw;
4202	int			 errs = 0;
4203
4204	if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4205		FREE_LIST(struct node_if, interfaces);
4206		FREE_LIST(struct node_queue, nqueues);
4207		return (0);
4208	}
4209
4210	LOOP_THROUGH(struct node_if, interface, interfaces,
4211		memcpy(&pa, a, sizeof(struct pf_altq));
4212		if (strlcpy(pa.ifname, interface->ifname,
4213		    sizeof(pa.ifname)) >= sizeof(pa.ifname))
4214			errx(1, "expand_altq: strlcpy");
4215
4216		if (interface->not) {
4217			yyerror("altq on ! <interface> is not supported");
4218			errs++;
4219		} else {
4220			if (eval_pfaltq(pf, &pa, &bwspec, opts))
4221				errs++;
4222			else
4223				if (pfctl_add_altq(pf, &pa))
4224					errs++;
4225
4226			if (pf->opts & PF_OPT_VERBOSE) {
4227				print_altq(&pf->paltq->altq, 0,
4228				    &bwspec, opts);
4229				if (nqueues && nqueues->tail) {
4230					printf("queue { ");
4231					LOOP_THROUGH(struct node_queue, queue,
4232					    nqueues,
4233						printf("%s ",
4234						    queue->queue);
4235					);
4236					printf("}");
4237				}
4238				printf("\n");
4239			}
4240
4241			if (pa.scheduler == ALTQT_CBQ ||
4242			    pa.scheduler == ALTQT_HFSC) {
4243				/* now create a root queue */
4244				memset(&pb, 0, sizeof(struct pf_altq));
4245				if (strlcpy(qname, "root_", sizeof(qname)) >=
4246				    sizeof(qname))
4247					errx(1, "expand_altq: strlcpy");
4248				if (strlcat(qname, interface->ifname,
4249				    sizeof(qname)) >= sizeof(qname))
4250					errx(1, "expand_altq: strlcat");
4251				if (strlcpy(pb.qname, qname,
4252				    sizeof(pb.qname)) >= sizeof(pb.qname))
4253					errx(1, "expand_altq: strlcpy");
4254				if (strlcpy(pb.ifname, interface->ifname,
4255				    sizeof(pb.ifname)) >= sizeof(pb.ifname))
4256					errx(1, "expand_altq: strlcpy");
4257				pb.qlimit = pa.qlimit;
4258				pb.scheduler = pa.scheduler;
4259				bw.bw_absolute = pa.ifbandwidth;
4260				bw.bw_percent = 0;
4261				if (eval_pfqueue(pf, &pb, &bw, opts))
4262					errs++;
4263				else
4264					if (pfctl_add_altq(pf, &pb))
4265						errs++;
4266			}
4267
4268			LOOP_THROUGH(struct node_queue, queue, nqueues,
4269				n = calloc(1, sizeof(struct node_queue));
4270				if (n == NULL)
4271					err(1, "expand_altq: calloc");
4272				if (pa.scheduler == ALTQT_CBQ ||
4273				    pa.scheduler == ALTQT_HFSC)
4274					if (strlcpy(n->parent, qname,
4275					    sizeof(n->parent)) >=
4276					    sizeof(n->parent))
4277						errx(1, "expand_altq: strlcpy");
4278				if (strlcpy(n->queue, queue->queue,
4279				    sizeof(n->queue)) >= sizeof(n->queue))
4280					errx(1, "expand_altq: strlcpy");
4281				if (strlcpy(n->ifname, interface->ifname,
4282				    sizeof(n->ifname)) >= sizeof(n->ifname))
4283					errx(1, "expand_altq: strlcpy");
4284				n->scheduler = pa.scheduler;
4285				n->next = NULL;
4286				n->tail = n;
4287				if (queues == NULL)
4288					queues = n;
4289				else {
4290					queues->tail->next = n;
4291					queues->tail = n;
4292				}
4293			);
4294		}
4295	);
4296	FREE_LIST(struct node_if, interfaces);
4297	FREE_LIST(struct node_queue, nqueues);
4298
4299	return (errs);
4300}
4301
4302int
4303expand_queue(struct pf_altq *a, struct node_if *interfaces,
4304    struct node_queue *nqueues, struct node_queue_bw bwspec,
4305    struct node_queue_opt *opts)
4306{
4307	struct node_queue	*n, *nq;
4308	struct pf_altq		 pa;
4309	u_int8_t		 found = 0;
4310	u_int8_t		 errs = 0;
4311
4312	if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4313		FREE_LIST(struct node_queue, nqueues);
4314		return (0);
4315	}
4316
4317	if (queues == NULL) {
4318		yyerror("queue %s has no parent", a->qname);
4319		FREE_LIST(struct node_queue, nqueues);
4320		return (1);
4321	}
4322
4323	LOOP_THROUGH(struct node_if, interface, interfaces,
4324		LOOP_THROUGH(struct node_queue, tqueue, queues,
4325			if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
4326			    (interface->ifname[0] == 0 ||
4327			    (!interface->not && !strncmp(interface->ifname,
4328			    tqueue->ifname, IFNAMSIZ)) ||
4329			    (interface->not && strncmp(interface->ifname,
4330			    tqueue->ifname, IFNAMSIZ)))) {
4331				/* found ourself in queues */
4332				found++;
4333
4334				memcpy(&pa, a, sizeof(struct pf_altq));
4335
4336				if (pa.scheduler != ALTQT_NONE &&
4337				    pa.scheduler != tqueue->scheduler) {
4338					yyerror("exactly one scheduler type "
4339					    "per interface allowed");
4340					return (1);
4341				}
4342				pa.scheduler = tqueue->scheduler;
4343
4344				/* scheduler dependent error checking */
4345				switch (pa.scheduler) {
4346				case ALTQT_PRIQ:
4347					if (nqueues != NULL) {
4348						yyerror("priq queues cannot "
4349						    "have child queues");
4350						return (1);
4351					}
4352					if (bwspec.bw_absolute > 0 ||
4353					    bwspec.bw_percent < 100) {
4354						yyerror("priq doesn't take "
4355						    "bandwidth");
4356						return (1);
4357					}
4358					break;
4359				default:
4360					break;
4361				}
4362
4363				if (strlcpy(pa.ifname, tqueue->ifname,
4364				    sizeof(pa.ifname)) >= sizeof(pa.ifname))
4365					errx(1, "expand_queue: strlcpy");
4366				if (strlcpy(pa.parent, tqueue->parent,
4367				    sizeof(pa.parent)) >= sizeof(pa.parent))
4368					errx(1, "expand_queue: strlcpy");
4369
4370				if (eval_pfqueue(pf, &pa, &bwspec, opts))
4371					errs++;
4372				else
4373					if (pfctl_add_altq(pf, &pa))
4374						errs++;
4375
4376				for (nq = nqueues; nq != NULL; nq = nq->next) {
4377					if (!strcmp(a->qname, nq->queue)) {
4378						yyerror("queue cannot have "
4379						    "itself as child");
4380						errs++;
4381						continue;
4382					}
4383					n = calloc(1,
4384					    sizeof(struct node_queue));
4385					if (n == NULL)
4386						err(1, "expand_queue: calloc");
4387					if (strlcpy(n->parent, a->qname,
4388					    sizeof(n->parent)) >=
4389					    sizeof(n->parent))
4390						errx(1, "expand_queue strlcpy");
4391					if (strlcpy(n->queue, nq->queue,
4392					    sizeof(n->queue)) >=
4393					    sizeof(n->queue))
4394						errx(1, "expand_queue strlcpy");
4395					if (strlcpy(n->ifname, tqueue->ifname,
4396					    sizeof(n->ifname)) >=
4397					    sizeof(n->ifname))
4398						errx(1, "expand_queue strlcpy");
4399					n->scheduler = tqueue->scheduler;
4400					n->next = NULL;
4401					n->tail = n;
4402					if (queues == NULL)
4403						queues = n;
4404					else {
4405						queues->tail->next = n;
4406						queues->tail = n;
4407					}
4408				}
4409				if ((pf->opts & PF_OPT_VERBOSE) && (
4410				    (found == 1 && interface->ifname[0] == 0) ||
4411				    (found > 0 && interface->ifname[0] != 0))) {
4412					print_queue(&pf->paltq->altq, 0,
4413					    &bwspec, interface->ifname[0] != 0,
4414					    opts);
4415					if (nqueues && nqueues->tail) {
4416						printf("{ ");
4417						LOOP_THROUGH(struct node_queue,
4418						    queue, nqueues,
4419							printf("%s ",
4420							    queue->queue);
4421						);
4422						printf("}");
4423					}
4424					printf("\n");
4425				}
4426			}
4427		);
4428	);
4429
4430	FREE_LIST(struct node_queue, nqueues);
4431	FREE_LIST(struct node_if, interfaces);
4432
4433	if (!found) {
4434		yyerror("queue %s has no parent", a->qname);
4435		errs++;
4436	}
4437
4438	if (errs)
4439		return (1);
4440	else
4441		return (0);
4442}
4443
4444int
4445apply_redirspec(struct pf_pool *rpool, struct pf_rule *r, struct redirspec *rs,
4446    int isrdr, struct node_port *np)
4447{
4448	struct node_host	*h;
4449	struct pf_pooladdr	*pa;
4450
4451	if (!rs || !rs->rdr)
4452		return (0);
4453
4454	if (!r->af && ! rs->rdr->host->ifindex)
4455		r->af = rs->rdr->host->af;
4456
4457	remove_invalid_hosts(&rs->rdr->host, &r->af);
4458	if (invalid_redirect(rs->rdr->host, r->af))
4459		return (1);
4460	if (check_netmask(rs->rdr->host, r->af))
4461		return (1);
4462
4463	rpool->proxy_port[0] = ntohs(rs->rdr->rport.a);
4464
4465	if (isrdr) {
4466		if (!rs->rdr->rport.b && rs->rdr->rport.t && np->port != NULL) {
4467			rpool->proxy_port[1] = ntohs(rs->rdr->rport.a) +
4468			    (ntohs(np->port[1]) - ntohs(np->port[0]));
4469		} else
4470			rpool->proxy_port[1] = ntohs(rs->rdr->rport.b);
4471	} else {
4472		rpool->proxy_port[1] = ntohs(rs->rdr->rport.b);
4473		if (!rpool->proxy_port[0] && !rpool->proxy_port[1]) {
4474			rpool->proxy_port[0] = PF_NAT_PROXY_PORT_LOW;
4475			rpool->proxy_port[1] = PF_NAT_PROXY_PORT_HIGH;
4476		} else if (!rpool->proxy_port[1])
4477			rpool->proxy_port[1] = rpool->proxy_port[0];
4478	}
4479
4480	rpool->opts = rs->pool_opts.type;
4481	if ((rpool->opts & PF_POOL_TYPEMASK) == PF_POOL_NONE &&
4482	    (rs->rdr->host->next != NULL ||
4483	    rs->rdr->host->addr.type == PF_ADDR_TABLE ||
4484	    DYNIF_MULTIADDR(rs->rdr->host->addr)))
4485		rpool->opts = PF_POOL_ROUNDROBIN;
4486	if ((rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_ROUNDROBIN &&
4487	    disallow_table(rs->rdr->host, "tables are only supported in "
4488	    "round-robin redirection pools"))
4489		return (1);
4490	if ((rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_ROUNDROBIN &&
4491	    disallow_alias(rs->rdr->host, "interface (%s) is only supported in "
4492	    "round-robin redirection pools"))
4493		return (1);
4494	if (rs->rdr->host->next != NULL) {
4495		if ((rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_ROUNDROBIN) {
4496			yyerror("only round-robin valid for multiple "
4497			    "redirection addresses");
4498			return (1);
4499		}
4500	}
4501
4502	if (rs->pool_opts.key != NULL)
4503		memcpy(&rpool->key, rs->pool_opts.key,
4504		    sizeof(struct pf_poolhashkey));
4505
4506	if (rs->pool_opts.opts)
4507		rpool->opts |= rs->pool_opts.opts;
4508
4509	if (rs->pool_opts.staticport) {
4510		if (isrdr) {
4511			yyerror("the 'static-port' option is only valid with "
4512			    "nat rules");
4513			return (1);
4514		}
4515		if (rpool->proxy_port[0] != PF_NAT_PROXY_PORT_LOW &&
4516		    rpool->proxy_port[1] != PF_NAT_PROXY_PORT_HIGH) {
4517			yyerror("the 'static-port' option can't be used when "
4518			    "specifying a port range");
4519			return (1);
4520		}
4521		rpool->proxy_port[0] = 0;
4522		rpool->proxy_port[1] = 0;
4523	}
4524
4525	TAILQ_INIT(&rpool->list);
4526	for (h = rs->rdr->host; h != NULL; h = h->next) {
4527		if ((pa = calloc(1, sizeof(struct pf_pooladdr))) == NULL)
4528			err(1, "apply_redirspec: calloc");
4529		pa->addr = h->addr;
4530		if (h->ifname != NULL) {
4531			if (strlcpy(pa->ifname, h->ifname, sizeof pa->ifname) >=
4532			    sizeof(pa->ifname))
4533				errx(1, "apply_redirspec: strlcpy");
4534		} else
4535			pa->ifname[0] = 0;
4536		TAILQ_INSERT_TAIL(&rpool->list, pa, entries);
4537	}
4538
4539	return (0);
4540}
4541
4542
4543void
4544expand_rule(struct pf_rule *r, int keeprule, struct node_if *interfaces,
4545    struct redirspec *nat, struct redirspec *rdr, struct redirspec *rroute,
4546    struct node_proto *protos, struct node_os *src_oses,
4547    struct node_host *src_hosts, struct node_port *src_ports,
4548    struct node_host *dst_hosts, struct node_port *dst_ports,
4549    struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
4550    const char *anchor_call)
4551{
4552	sa_family_t		 af = r->af;
4553	int			 added = 0, error = 0;
4554	char			 ifname[IF_NAMESIZE];
4555	char			 label[PF_RULE_LABEL_SIZE];
4556	char			 tagname[PF_TAG_NAME_SIZE];
4557	char			 match_tagname[PF_TAG_NAME_SIZE];
4558	u_int8_t		 flags, flagset, keep_state;
4559	struct node_host	*srch, *dsth;
4560	struct redirspec	 binat;
4561	struct pf_rule		 rb;
4562	int			 dir = r->direction;
4563
4564	if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label))
4565		errx(1, "expand_rule: strlcpy");
4566	if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
4567		errx(1, "expand_rule: strlcpy");
4568	if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
4569	    sizeof(match_tagname))
4570		errx(1, "expand_rule: strlcpy");
4571	flags = r->flags;
4572	flagset = r->flagset;
4573	keep_state = r->keep_state;
4574
4575	LOOP_THROUGH(struct node_if, interface, interfaces,
4576	LOOP_THROUGH(struct node_proto, proto, protos,
4577	LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
4578	LOOP_THROUGH(struct node_host, src_host, src_hosts,
4579	LOOP_THROUGH(struct node_port, src_port, src_ports,
4580	LOOP_THROUGH(struct node_os, src_os, src_oses,
4581	LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
4582	LOOP_THROUGH(struct node_port, dst_port, dst_ports,
4583	LOOP_THROUGH(struct node_uid, uid, uids,
4584	LOOP_THROUGH(struct node_gid, gid, gids,
4585
4586		r->af = af;
4587		/* for link-local IPv6 address, interface must match up */
4588		if ((r->af && src_host->af && r->af != src_host->af) ||
4589		    (r->af && dst_host->af && r->af != dst_host->af) ||
4590		    (src_host->af && dst_host->af &&
4591		    src_host->af != dst_host->af) ||
4592		    (src_host->ifindex && dst_host->ifindex &&
4593		    src_host->ifindex != dst_host->ifindex) ||
4594		    (src_host->ifindex && *interface->ifname &&
4595		    src_host->ifindex != if_nametoindex(interface->ifname)) ||
4596		    (dst_host->ifindex && *interface->ifname &&
4597		    dst_host->ifindex != if_nametoindex(interface->ifname)))
4598			continue;
4599		if (!r->af && src_host->af)
4600			r->af = src_host->af;
4601		else if (!r->af && dst_host->af)
4602			r->af = dst_host->af;
4603
4604		if (*interface->ifname)
4605			strlcpy(r->ifname, interface->ifname,
4606			    sizeof(r->ifname));
4607		else if (if_indextoname(src_host->ifindex, ifname))
4608			strlcpy(r->ifname, ifname, sizeof(r->ifname));
4609		else if (if_indextoname(dst_host->ifindex, ifname))
4610			strlcpy(r->ifname, ifname, sizeof(r->ifname));
4611		else
4612			memset(r->ifname, '\0', sizeof(r->ifname));
4613
4614		if (strlcpy(r->label, label, sizeof(r->label)) >=
4615		    sizeof(r->label))
4616			errx(1, "expand_rule: strlcpy");
4617		if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
4618		    sizeof(r->tagname))
4619			errx(1, "expand_rule: strlcpy");
4620		if (strlcpy(r->match_tagname, match_tagname,
4621		    sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
4622			errx(1, "expand_rule: strlcpy");
4623		expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af,
4624		    src_host, src_port, dst_host, dst_port, proto->proto);
4625		expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af,
4626		    src_host, src_port, dst_host, dst_port, proto->proto);
4627		expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname,
4628		    r->af, src_host, src_port, dst_host, dst_port,
4629		    proto->proto);
4630
4631		error += check_netmask(src_host, r->af);
4632		error += check_netmask(dst_host, r->af);
4633
4634		r->ifnot = interface->not;
4635		r->proto = proto->proto;
4636		r->src.addr = src_host->addr;
4637		r->src.neg = src_host->not;
4638		r->src.port[0] = src_port->port[0];
4639		r->src.port[1] = src_port->port[1];
4640		r->src.port_op = src_port->op;
4641		r->dst.addr = dst_host->addr;
4642		r->dst.neg = dst_host->not;
4643		r->dst.port[0] = dst_port->port[0];
4644		r->dst.port[1] = dst_port->port[1];
4645		r->dst.port_op = dst_port->op;
4646		r->uid.op = uid->op;
4647		r->uid.uid[0] = uid->uid[0];
4648		r->uid.uid[1] = uid->uid[1];
4649		r->gid.op = gid->op;
4650		r->gid.gid[0] = gid->gid[0];
4651		r->gid.gid[1] = gid->gid[1];
4652		r->type = icmp_type->type;
4653		r->code = icmp_type->code;
4654
4655		if ((keep_state == PF_STATE_MODULATE ||
4656		    keep_state == PF_STATE_SYNPROXY) &&
4657		    r->proto && r->proto != IPPROTO_TCP)
4658			r->keep_state = PF_STATE_NORMAL;
4659		else
4660			r->keep_state = keep_state;
4661
4662		if (r->proto && r->proto != IPPROTO_TCP) {
4663			r->flags = 0;
4664			r->flagset = 0;
4665		} else {
4666			r->flags = flags;
4667			r->flagset = flagset;
4668		}
4669		if (icmp_type->proto && r->proto != icmp_type->proto) {
4670			yyerror("icmp-type mismatch");
4671			error++;
4672		}
4673
4674		if (src_os && src_os->os) {
4675			r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
4676			if ((pf->opts & PF_OPT_VERBOSE2) &&
4677			    r->os_fingerprint == PF_OSFP_NOMATCH)
4678				fprintf(stderr,
4679				    "warning: unknown '%s' OS fingerprint\n",
4680				    src_os->os);
4681		} else {
4682			r->os_fingerprint = PF_OSFP_ANY;
4683		}
4684
4685		if (nat && nat->rdr && nat->binat) {
4686			if (disallow_table(src_host, "invalid use of table "
4687			    "<%s> as the source address of a binat-to rule") ||
4688			    disallow_alias(src_host, "invalid use of interface "
4689			    "(%s) as the source address of a binat-to rule")) {
4690				error++;
4691			} else if (src_host->af == AF_UNSPEC) {
4692				yyerror("binat-to requires a specified "
4693				    "source and redirect address");
4694				error++;
4695			}
4696			if (disallow_table(src_host, "invalid use of table "
4697			    "<%s> as the redirect address of a "
4698			    "binat-to rule") ||
4699			    disallow_alias(dst_host, "invalid use of interface "
4700			    "(%s) as the redirect address of a "
4701			    "binat-to rule") ||
4702			    disallow_urpf_failed(dst_host, "\"urpf-failed\" "
4703			    "is not permitted as a binat-to destination")) {
4704				error++;
4705			}
4706			if (r->direction != PF_INOUT) {
4707				yyerror("binat-to cannot be specified "
4708				    "with a direction");
4709				error++;
4710			}
4711
4712			/* first specify outbound NAT rule */
4713			r->direction = PF_OUT;
4714		}
4715
4716		error += apply_redirspec(&r->nat, r, nat, 0, dst_port);
4717		error += apply_redirspec(&r->rdr, r, rdr, 1, dst_port);
4718		error += apply_redirspec(&r->route, r, rroute, 2, dst_port);
4719
4720		if (rule_consistent(r, anchor_call[0]) < 0 || error)
4721			yyerror("skipping rule due to errors");
4722		else {
4723			r->nr = pf->astack[pf->asd]->match++;
4724			pfctl_add_rule(pf, r, anchor_call);
4725			added++;
4726		}
4727		r->direction = dir;
4728
4729		/* Generate binat's matching inbound rule */
4730		if (!error && nat && nat->rdr && nat->binat) {
4731			bcopy(r, &rb, sizeof(rb));
4732
4733			/* now specify inbound rdr rule */
4734			rb.direction = PF_IN;
4735
4736			if ((srch = calloc(1, sizeof(*srch))) == NULL)
4737				err(1, "expand_rule: calloc");
4738			bcopy(src_host, srch, sizeof(*srch));
4739			srch->ifname = NULL;
4740			srch->next = NULL;
4741			srch->tail = NULL;
4742
4743			if ((dsth = calloc(1, sizeof(*dsth))) == NULL)
4744				err(1, "expand_rule: calloc");
4745			bcopy(nat->rdr->host, dsth, sizeof(*dsth));
4746			dsth->ifname = NULL;
4747			dsth->next = NULL;
4748			dsth->tail = NULL;
4749
4750			if ((binat.rdr =
4751			    calloc(1, sizeof(*binat.rdr))) == NULL)
4752				err(1, "expand_rule: calloc");
4753			bcopy(nat->rdr, binat.rdr, sizeof(*binat.rdr));
4754			bcopy(&nat->pool_opts, &binat.pool_opts,
4755			    sizeof(binat.pool_opts));
4756			binat.pool_opts.staticport = 0;
4757			binat.rdr->host = srch;
4758
4759			expand_rule(&rb, 1, interface, NULL, &binat, NULL,
4760			    proto,
4761			    src_os, dst_host, dst_port, dsth, src_port,
4762			    uid, gid, icmp_type, anchor_call);
4763		}
4764
4765	))))))))));
4766
4767	if (!keeprule) {
4768		FREE_LIST(struct node_if, interfaces);
4769		FREE_LIST(struct node_proto, protos);
4770		FREE_LIST(struct node_host, src_hosts);
4771		FREE_LIST(struct node_port, src_ports);
4772		FREE_LIST(struct node_os, src_oses);
4773		FREE_LIST(struct node_host, dst_hosts);
4774		FREE_LIST(struct node_port, dst_ports);
4775		FREE_LIST(struct node_uid, uids);
4776		FREE_LIST(struct node_gid, gids);
4777		FREE_LIST(struct node_icmp, icmp_types);
4778		if (nat && nat->rdr)
4779			FREE_LIST(struct node_host, nat->rdr->host);
4780		if (rdr && rdr->rdr)
4781			FREE_LIST(struct node_host, rdr->rdr->host);
4782	}
4783
4784	if (!added)
4785		yyerror("rule expands to no valid combination");
4786}
4787
4788int
4789expand_skip_interface(struct node_if *interfaces)
4790{
4791	int	errs = 0;
4792
4793	if (!interfaces || (!interfaces->next && !interfaces->not &&
4794	    !strcmp(interfaces->ifname, "none"))) {
4795		if (pf->opts & PF_OPT_VERBOSE)
4796			printf("set skip on none\n");
4797		errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
4798		return (errs);
4799	}
4800
4801	if (pf->opts & PF_OPT_VERBOSE)
4802		printf("set skip on {");
4803	LOOP_THROUGH(struct node_if, interface, interfaces,
4804		if (pf->opts & PF_OPT_VERBOSE)
4805			printf(" %s", interface->ifname);
4806		if (interface->not) {
4807			yyerror("skip on ! <interface> is not supported");
4808			errs++;
4809		} else
4810			errs += pfctl_set_interface_flags(pf,
4811			    interface->ifname, PFI_IFLAG_SKIP, 1);
4812	);
4813	if (pf->opts & PF_OPT_VERBOSE)
4814		printf(" }\n");
4815
4816	FREE_LIST(struct node_if, interfaces);
4817
4818	if (errs)
4819		return (1);
4820	else
4821		return (0);
4822}
4823
4824#undef FREE_LIST
4825#undef LOOP_THROUGH
4826
4827int
4828check_rulestate(int desired_state)
4829{
4830	if (require_order && (rulestate > desired_state)) {
4831		yyerror("Rules must be in order: options, normalization, "
4832		    "queueing, translation, filtering");
4833		return (1);
4834	}
4835	rulestate = desired_state;
4836	return (0);
4837}
4838
4839int
4840kw_cmp(const void *k, const void *e)
4841{
4842	return (strcmp(k, ((const struct keywords *)e)->k_name));
4843}
4844
4845int
4846lookup(char *s)
4847{
4848	/* this has to be sorted always */
4849	static const struct keywords keywords[] = {
4850		{ "all",		ALL},
4851		{ "allow-opts",		ALLOWOPTS},
4852		{ "altq",		ALTQ},
4853		{ "anchor",		ANCHOR},
4854		{ "antispoof",		ANTISPOOF},
4855		{ "any",		ANY},
4856		{ "bandwidth",		BANDWIDTH},
4857		{ "binat-to",		BINATTO},
4858		{ "bitmask",		BITMASK},
4859		{ "block",		BLOCK},
4860		{ "block-policy",	BLOCKPOLICY},
4861		{ "cbq",		CBQ},
4862		{ "code",		CODE},
4863		{ "crop",		FRAGCROP},
4864		{ "debug",		DEBUG},
4865		{ "divert-packet",	DIVERTPACKET},
4866		{ "divert-reply",	DIVERTREPLY},
4867		{ "divert-to",		DIVERTTO},
4868		{ "drop",		DROP},
4869		{ "drop-ovl",		FRAGDROP},
4870		{ "dup-to",		DUPTO},
4871		{ "fastroute",		FASTROUTE},
4872		{ "file",		FILENAME},
4873		{ "fingerprints",	FINGERPRINTS},
4874		{ "flags",		FLAGS},
4875		{ "floating",		FLOATING},
4876		{ "flush",		FLUSH},
4877		{ "for",		FOR},
4878		{ "fragment",		FRAGMENT},
4879		{ "from",		FROM},
4880		{ "global",		GLOBAL},
4881		{ "group",		GROUP},
4882		{ "hfsc",		HFSC},
4883		{ "hostid",		HOSTID},
4884		{ "icmp-type",		ICMPTYPE},
4885		{ "icmp6-type",		ICMP6TYPE},
4886		{ "if-bound",		IFBOUND},
4887		{ "in",			IN},
4888		{ "include",		INCLUDE},
4889		{ "inet",		INET},
4890		{ "inet6",		INET6},
4891		{ "keep",		KEEP},
4892		{ "label",		LABEL},
4893		{ "limit",		LIMIT},
4894		{ "linkshare",		LINKSHARE},
4895		{ "load",		LOAD},
4896		{ "log",		LOG},
4897		{ "loginterface",	LOGINTERFACE},
4898		{ "match",		MATCH},
4899		{ "max",		MAXIMUM},
4900		{ "max-mss",		MAXMSS},
4901		{ "max-src-conn",	MAXSRCCONN},
4902		{ "max-src-conn-rate",	MAXSRCCONNRATE},
4903		{ "max-src-nodes",	MAXSRCNODES},
4904		{ "max-src-states",	MAXSRCSTATES},
4905		{ "min-ttl",		MINTTL},
4906		{ "modulate",		MODULATE},
4907		{ "nat",		NAT},
4908		{ "nat-anchor",		NATANCHOR},
4909		{ "nat-to",		NATTO},
4910		{ "no",			NO},
4911		{ "no-df",		NODF},
4912		{ "no-route",		NOROUTE},
4913		{ "no-sync",		NOSYNC},
4914		{ "on",			ON},
4915		{ "optimization",	OPTIMIZATION},
4916		{ "os",			OS},
4917		{ "out",		OUT},
4918		{ "overload",		OVERLOAD},
4919		{ "pass",		PASS},
4920		{ "pflow",		PFLOW},
4921		{ "port",		PORT},
4922		{ "priority",		PRIORITY},
4923		{ "priq",		PRIQ},
4924		{ "probability",	PROBABILITY},
4925		{ "proto",		PROTO},
4926		{ "qlimit",		QLIMIT},
4927		{ "queue",		QUEUE},
4928		{ "quick",		QUICK},
4929		{ "random",		RANDOM},
4930		{ "random-id",		RANDOMID},
4931		{ "rdr",		RDR},
4932		{ "rdr-anchor",		RDRANCHOR},
4933		{ "rdr-to",		RDRTO},
4934		{ "realtime",		REALTIME},
4935		{ "reassemble",		REASSEMBLE},
4936		{ "reply-to",		REPLYTO},
4937		{ "require-order",	REQUIREORDER},
4938		{ "return",		RETURN},
4939		{ "return-icmp",	RETURNICMP},
4940		{ "return-icmp6",	RETURNICMP6},
4941		{ "return-rst",		RETURNRST},
4942		{ "round-robin",	ROUNDROBIN},
4943		{ "route",		ROUTE},
4944		{ "route-to",		ROUTETO},
4945		{ "rtable",		RTABLE},
4946		{ "rule",		RULE},
4947		{ "ruleset-optimization",	RULESET_OPTIMIZATION},
4948		{ "scrub",		SCRUB},
4949		{ "set",		SET},
4950		{ "set-tos",		SETTOS},
4951		{ "skip",		SKIP},
4952		{ "sloppy",		SLOPPY},
4953		{ "source-hash",	SOURCEHASH},
4954		{ "source-track",	SOURCETRACK},
4955		{ "state",		STATE},
4956		{ "state-defaults",	STATEDEFAULTS},
4957		{ "state-policy",	STATEPOLICY},
4958		{ "static-port",	STATICPORT},
4959		{ "sticky-address",	STICKYADDRESS},
4960		{ "synproxy",		SYNPROXY},
4961		{ "table",		TABLE},
4962		{ "tag",		TAG},
4963		{ "tagged",		TAGGED},
4964		{ "tbrsize",		TBRSIZE},
4965		{ "timeout",		TIMEOUT},
4966		{ "to",			TO},
4967		{ "tos",		TOS},
4968		{ "ttl",		TTL},
4969		{ "upperlimit",		UPPERLIMIT},
4970		{ "urpf-failed",	URPFFAILED},
4971		{ "user",		USER},
4972	};
4973	const struct keywords	*p;
4974
4975	p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
4976	    sizeof(keywords[0]), kw_cmp);
4977
4978	if (p) {
4979		if (debug > 1)
4980			fprintf(stderr, "%s: %d\n", s, p->k_val);
4981		return (p->k_val);
4982	} else {
4983		if (debug > 1)
4984			fprintf(stderr, "string: %s\n", s);
4985		return (STRING);
4986	}
4987}
4988
4989#define MAXPUSHBACK	128
4990
4991char	*parsebuf;
4992int	 parseindex;
4993char	 pushback_buffer[MAXPUSHBACK];
4994int	 pushback_index = 0;
4995
4996int
4997lgetc(int quotec)
4998{
4999	int		c, next;
5000
5001	if (parsebuf) {
5002		/* Read character from the parsebuffer instead of input. */
5003		if (parseindex >= 0) {
5004			c = parsebuf[parseindex++];
5005			if (c != '\0')
5006				return (c);
5007			parsebuf = NULL;
5008		} else
5009			parseindex++;
5010	}
5011
5012	if (pushback_index)
5013		return (pushback_buffer[--pushback_index]);
5014
5015	if (quotec) {
5016		if ((c = getc(file->stream)) == EOF) {
5017			yyerror("reached end of file while parsing quoted string");
5018			if (popfile() == EOF)
5019				return (EOF);
5020			return (quotec);
5021		}
5022		return (c);
5023	}
5024
5025	while ((c = getc(file->stream)) == '\\') {
5026		next = getc(file->stream);
5027		if (next != '\n') {
5028			c = next;
5029			break;
5030		}
5031		yylval.lineno = file->lineno;
5032		file->lineno++;
5033	}
5034
5035	while (c == EOF) {
5036		if (popfile() == EOF)
5037			return (EOF);
5038		c = getc(file->stream);
5039	}
5040	return (c);
5041}
5042
5043int
5044lungetc(int c)
5045{
5046	if (c == EOF)
5047		return (EOF);
5048	if (parsebuf) {
5049		parseindex--;
5050		if (parseindex >= 0)
5051			return (c);
5052	}
5053	if (pushback_index < MAXPUSHBACK-1)
5054		return (pushback_buffer[pushback_index++] = c);
5055	else
5056		return (EOF);
5057}
5058
5059int
5060findeol(void)
5061{
5062	int	c;
5063
5064	parsebuf = NULL;
5065
5066	/* skip to either EOF or the first real EOL */
5067	while (1) {
5068		if (pushback_index)
5069			c = pushback_buffer[--pushback_index];
5070		else
5071			c = lgetc(0);
5072		if (c == '\n') {
5073			file->lineno++;
5074			break;
5075		}
5076		if (c == EOF)
5077			break;
5078	}
5079	return (ERROR);
5080}
5081
5082int
5083yylex(void)
5084{
5085	char	 buf[8096];
5086	char	*p, *val;
5087	int	 quotec, next, c;
5088	int	 token;
5089
5090top:
5091	p = buf;
5092	while ((c = lgetc(0)) == ' ' || c == '\t')
5093		; /* nothing */
5094
5095	yylval.lineno = file->lineno;
5096	if (c == '#')
5097		while ((c = lgetc(0)) != '\n' && c != EOF)
5098			; /* nothing */
5099	if (c == '$' && parsebuf == NULL) {
5100		while (1) {
5101			if ((c = lgetc(0)) == EOF)
5102				return (0);
5103
5104			if (p + 1 >= buf + sizeof(buf) - 1) {
5105				yyerror("string too long");
5106				return (findeol());
5107			}
5108			if (isalnum(c) || c == '_') {
5109				*p++ = (char)c;
5110				continue;
5111			}
5112			*p = '\0';
5113			lungetc(c);
5114			break;
5115		}
5116		val = symget(buf);
5117		if (val == NULL) {
5118			yyerror("macro '%s' not defined", buf);
5119			return (findeol());
5120		}
5121		parsebuf = val;
5122		parseindex = 0;
5123		goto top;
5124	}
5125
5126	switch (c) {
5127	case '\'':
5128	case '"':
5129		quotec = c;
5130		while (1) {
5131			if ((c = lgetc(quotec)) == EOF)
5132				return (0);
5133			if (c == '\n') {
5134				file->lineno++;
5135				continue;
5136			} else if (c == '\\') {
5137				if ((next = lgetc(quotec)) == EOF)
5138					return (0);
5139				if (next == quotec || c == ' ' || c == '\t')
5140					c = next;
5141				else if (next == '\n')
5142					continue;
5143				else
5144					lungetc(next);
5145			} else if (c == quotec) {
5146				*p = '\0';
5147				break;
5148			}
5149			if (p + 1 >= buf + sizeof(buf) - 1) {
5150				yyerror("string too long");
5151				return (findeol());
5152			}
5153			*p++ = (char)c;
5154		}
5155		yylval.v.string = strdup(buf);
5156		if (yylval.v.string == NULL)
5157			err(1, "yylex: strdup");
5158		return (STRING);
5159	case '<':
5160		next = lgetc(0);
5161		if (next == '>') {
5162			yylval.v.i = PF_OP_XRG;
5163			return (PORTBINARY);
5164		}
5165		lungetc(next);
5166		break;
5167	case '>':
5168		next = lgetc(0);
5169		if (next == '<') {
5170			yylval.v.i = PF_OP_IRG;
5171			return (PORTBINARY);
5172		}
5173		lungetc(next);
5174		break;
5175	}
5176
5177#define allowed_to_end_number(x) \
5178	(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
5179
5180	if (c == '-' || isdigit(c)) {
5181		do {
5182			*p++ = c;
5183			if ((unsigned)(p-buf) >= sizeof(buf)) {
5184				yyerror("string too long");
5185				return (findeol());
5186			}
5187		} while ((c = lgetc(0)) != EOF && isdigit(c));
5188		lungetc(c);
5189		if (p == buf + 1 && buf[0] == '-')
5190			goto nodigits;
5191		if (c == EOF || allowed_to_end_number(c)) {
5192			const char *errstr = NULL;
5193
5194			*p = '\0';
5195			yylval.v.number = strtonum(buf, LLONG_MIN,
5196			    LLONG_MAX, &errstr);
5197			if (errstr) {
5198				yyerror("\"%s\" invalid number: %s",
5199				    buf, errstr);
5200				return (findeol());
5201			}
5202			return (NUMBER);
5203		} else {
5204nodigits:
5205			while (p > buf + 1)
5206				lungetc(*--p);
5207			c = *--p;
5208			if (c == '-')
5209				return (c);
5210		}
5211	}
5212
5213#define allowed_in_string(x) \
5214	(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
5215	x != '{' && x != '}' && x != '<' && x != '>' && \
5216	x != '!' && x != '=' && x != '/' && x != '#' && \
5217	x != ','))
5218
5219	if (isalnum(c) || c == ':' || c == '_') {
5220		do {
5221			*p++ = c;
5222			if ((unsigned)(p-buf) >= sizeof(buf)) {
5223				yyerror("string too long");
5224				return (findeol());
5225			}
5226		} while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
5227		lungetc(c);
5228		*p = '\0';
5229		if ((token = lookup(buf)) == STRING)
5230			if ((yylval.v.string = strdup(buf)) == NULL)
5231				err(1, "yylex: strdup");
5232		return (token);
5233	}
5234	if (c == '\n') {
5235		yylval.lineno = file->lineno;
5236		file->lineno++;
5237	}
5238	if (c == EOF)
5239		return (0);
5240	return (c);
5241}
5242
5243int
5244check_file_secrecy(int fd, const char *fname)
5245{
5246	struct stat	st;
5247
5248	if (fstat(fd, &st)) {
5249		warn("cannot stat %s", fname);
5250		return (-1);
5251	}
5252	if (st.st_uid != 0 && st.st_uid != getuid()) {
5253		warnx("%s: owner not root or current user", fname);
5254		return (-1);
5255	}
5256	if (st.st_mode & (S_IRWXG | S_IRWXO)) {
5257		warnx("%s: group/world readable/writeable", fname);
5258		return (-1);
5259	}
5260	return (0);
5261}
5262
5263struct file *
5264pushfile(const char *name, int secret)
5265{
5266	struct file	*nfile;
5267
5268	if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
5269	    (nfile->name = strdup(name)) == NULL) {
5270		if (nfile)
5271			free(nfile);
5272		warn("malloc");
5273		return (NULL);
5274	}
5275	if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
5276		nfile->stream = stdin;
5277		free(nfile->name);
5278		if ((nfile->name = strdup("stdin")) == NULL) {
5279			warn("strdup");
5280			free(nfile);
5281			return (NULL);
5282		}
5283	} else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
5284		warn("%s", nfile->name);
5285		free(nfile->name);
5286		free(nfile);
5287		return (NULL);
5288	} else if (secret &&
5289	    check_file_secrecy(fileno(nfile->stream), nfile->name)) {
5290		fclose(nfile->stream);
5291		free(nfile->name);
5292		free(nfile);
5293		return (NULL);
5294	}
5295	nfile->lineno = 1;
5296	TAILQ_INSERT_TAIL(&files, nfile, entry);
5297	return (nfile);
5298}
5299
5300int
5301popfile(void)
5302{
5303	struct file	*prev;
5304
5305	if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
5306		prev->errors += file->errors;
5307		TAILQ_REMOVE(&files, file, entry);
5308		fclose(file->stream);
5309		free(file->name);
5310		free(file);
5311		file = prev;
5312		return (0);
5313	}
5314	return (EOF);
5315}
5316
5317int
5318parse_config(char *filename, struct pfctl *xpf)
5319{
5320	int		 errors = 0;
5321	struct sym	*sym;
5322
5323	pf = xpf;
5324	errors = 0;
5325	rulestate = PFCTL_STATE_NONE;
5326	returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
5327	returnicmp6default =
5328	    (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
5329	blockpolicy = PFRULE_DROP;
5330	require_order = 0;
5331
5332	if ((file = pushfile(filename, 0)) == NULL) {
5333		warn("cannot open the main config file!");
5334		return (-1);
5335	}
5336
5337	yyparse();
5338	errors = file->errors;
5339	popfile();
5340
5341	/* Free macros and check which have not been used. */
5342	while ((sym = TAILQ_FIRST(&symhead))) {
5343		if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
5344			fprintf(stderr, "warning: macro '%s' not "
5345			    "used\n", sym->nam);
5346		free(sym->nam);
5347		free(sym->val);
5348		TAILQ_REMOVE(&symhead, sym, entry);
5349		free(sym);
5350	}
5351
5352	return (errors ? -1 : 0);
5353}
5354
5355int
5356symset(const char *nam, const char *val, int persist)
5357{
5358	struct sym	*sym;
5359
5360	for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
5361	    sym = TAILQ_NEXT(sym, entry))
5362		;	/* nothing */
5363
5364	if (sym != NULL) {
5365		if (sym->persist == 1)
5366			return (0);
5367		else {
5368			free(sym->nam);
5369			free(sym->val);
5370			TAILQ_REMOVE(&symhead, sym, entry);
5371			free(sym);
5372		}
5373	}
5374	if ((sym = calloc(1, sizeof(*sym))) == NULL)
5375		return (-1);
5376
5377	sym->nam = strdup(nam);
5378	if (sym->nam == NULL) {
5379		free(sym);
5380		return (-1);
5381	}
5382	sym->val = strdup(val);
5383	if (sym->val == NULL) {
5384		free(sym->nam);
5385		free(sym);
5386		return (-1);
5387	}
5388	sym->used = 0;
5389	sym->persist = persist;
5390	TAILQ_INSERT_TAIL(&symhead, sym, entry);
5391	return (0);
5392}
5393
5394int
5395pfctl_cmdline_symset(char *s)
5396{
5397	char	*sym, *val;
5398	int	 ret;
5399
5400	if ((val = strrchr(s, '=')) == NULL)
5401		return (-1);
5402
5403	if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
5404		err(1, "pfctl_cmdline_symset: malloc");
5405
5406	strlcpy(sym, s, strlen(s) - strlen(val) + 1);
5407
5408	ret = symset(sym, val + 1, 1);
5409	free(sym);
5410
5411	return (ret);
5412}
5413
5414char *
5415symget(const char *nam)
5416{
5417	struct sym	*sym;
5418
5419	TAILQ_FOREACH(sym, &symhead, entry)
5420		if (strcmp(nam, sym->nam) == 0) {
5421			sym->used = 1;
5422			return (sym->val);
5423		}
5424	return (NULL);
5425}
5426
5427void
5428mv_rules(struct pf_ruleset *src, struct pf_ruleset *dst)
5429{
5430	struct pf_rule *r;
5431
5432	while ((r = TAILQ_FIRST(src->rules.active.ptr)) != NULL) {
5433		TAILQ_REMOVE(src->rules.active.ptr, r, entries);
5434		TAILQ_INSERT_TAIL(dst->rules.active.ptr, r, entries);
5435		dst->anchor->match++;
5436	}
5437	src->anchor->match = 0;
5438	while ((r = TAILQ_FIRST(src->rules.inactive.ptr)) != NULL) {
5439		TAILQ_REMOVE(src->rules.inactive.ptr, r, entries);
5440		TAILQ_INSERT_TAIL(dst->rules.inactive.ptr, r, entries);
5441	}
5442}
5443
5444void
5445decide_address_family(struct node_host *n, sa_family_t *af)
5446{
5447	if (*af != 0 || n == NULL)
5448		return;
5449	*af = n->af;
5450	while ((n = n->next) != NULL) {
5451		if (n->af != *af) {
5452			*af = 0;
5453			return;
5454		}
5455	}
5456}
5457
5458void
5459remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
5460{
5461	struct node_host	*n = *nh, *prev = NULL;
5462
5463	while (n != NULL) {
5464		if (*af && n->af && n->af != *af) {
5465			/* unlink and free n */
5466			struct node_host *next = n->next;
5467
5468			/* adjust tail pointer */
5469			if (n == (*nh)->tail)
5470				(*nh)->tail = prev;
5471			/* adjust previous node's next pointer */
5472			if (prev == NULL)
5473				*nh = next;
5474			else
5475				prev->next = next;
5476			/* free node */
5477			if (n->ifname != NULL)
5478				free(n->ifname);
5479			free(n);
5480			n = next;
5481		} else {
5482			if (n->af && !*af)
5483				*af = n->af;
5484			prev = n;
5485			n = n->next;
5486		}
5487	}
5488}
5489
5490int
5491invalid_redirect(struct node_host *nh, sa_family_t af)
5492{
5493	if (!af) {
5494		struct node_host *n;
5495
5496		/* tables and dyniftl are ok without an address family */
5497		for (n = nh; n != NULL; n = n->next) {
5498			if (n->addr.type != PF_ADDR_TABLE &&
5499			    n->addr.type != PF_ADDR_DYNIFTL) {
5500				yyerror("address family not given and "
5501				    "translation address expands to multiple "
5502				    "address families");
5503				return (1);
5504			}
5505		}
5506	}
5507	if (nh == NULL) {
5508		yyerror("no translation address with matching address family "
5509		    "found.");
5510		return (1);
5511	}
5512	return (0);
5513}
5514
5515int
5516atoul(char *s, u_long *ulvalp)
5517{
5518	u_long	 ulval;
5519	char	*ep;
5520
5521	errno = 0;
5522	ulval = strtoul(s, &ep, 0);
5523	if (s[0] == '\0' || *ep != '\0')
5524		return (-1);
5525	if (errno == ERANGE && ulval == ULONG_MAX)
5526		return (-1);
5527	*ulvalp = ulval;
5528	return (0);
5529}
5530
5531int
5532getservice(char *n)
5533{
5534	struct servent	*s;
5535	u_long		 ulval;
5536
5537	if (atoul(n, &ulval) == 0) {
5538		if (ulval > 65535) {
5539			yyerror("illegal port value %lu", ulval);
5540			return (-1);
5541		}
5542		return (htons(ulval));
5543	} else {
5544		s = getservbyname(n, "tcp");
5545		if (s == NULL)
5546			s = getservbyname(n, "udp");
5547		if (s == NULL) {
5548			yyerror("unknown port %s", n);
5549			return (-1);
5550		}
5551		return (s->s_port);
5552	}
5553}
5554
5555int
5556rule_label(struct pf_rule *r, char *s)
5557{
5558	if (s) {
5559		if (strlcpy(r->label, s, sizeof(r->label)) >=
5560		    sizeof(r->label)) {
5561			yyerror("rule label too long (max %d chars)",
5562			    sizeof(r->label)-1);
5563			return (-1);
5564		}
5565	}
5566	return (0);
5567}
5568
5569u_int16_t
5570parseicmpspec(char *w, sa_family_t af)
5571{
5572	const struct icmpcodeent	*p;
5573	u_long				 ulval;
5574	u_int8_t			 icmptype;
5575
5576	if (af == AF_INET)
5577		icmptype = returnicmpdefault >> 8;
5578	else
5579		icmptype = returnicmp6default >> 8;
5580
5581	if (atoul(w, &ulval) == -1) {
5582		if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
5583			yyerror("unknown icmp code %s", w);
5584			return (0);
5585		}
5586		ulval = p->code;
5587	}
5588	if (ulval > 255) {
5589		yyerror("invalid icmp code %lu", ulval);
5590		return (0);
5591	}
5592	return (icmptype << 8 | ulval);
5593}
5594
5595int
5596parseport(char *port, struct range *r, int extensions)
5597{
5598	char	*p = strchr(port, ':');
5599
5600	if (p == NULL) {
5601		if ((r->a = getservice(port)) == -1)
5602			return (-1);
5603		r->b = 0;
5604		r->t = PF_OP_NONE;
5605		return (0);
5606	}
5607	if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
5608		*p = 0;
5609		if ((r->a = getservice(port)) == -1)
5610			return (-1);
5611		r->b = 0;
5612		r->t = PF_OP_IRG;
5613		return (0);
5614	}
5615	if ((extensions & PPORT_RANGE)) {
5616		*p++ = 0;
5617		if ((r->a = getservice(port)) == -1 ||
5618		    (r->b = getservice(p)) == -1)
5619			return (-1);
5620		if (r->a == r->b) {
5621			r->b = 0;
5622			r->t = PF_OP_NONE;
5623		} else
5624			r->t = PF_OP_RRG;
5625		return (0);
5626	}
5627	return (-1);
5628}
5629
5630int
5631pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
5632{
5633	struct loadanchors	*la;
5634
5635	TAILQ_FOREACH(la, &loadanchorshead, entries) {
5636		if (pf->opts & PF_OPT_VERBOSE)
5637			fprintf(stderr, "\nLoading anchor %s from %s\n",
5638			    la->anchorname, la->filename);
5639		if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
5640		    la->anchorname, trans) == -1)
5641			return (-1);
5642	}
5643
5644	return (0);
5645}
5646
5647int
5648kw_casecmp(const void *k, const void *e)
5649{
5650	return (strcasecmp(k, ((const struct keywords *)e)->k_name));
5651}
5652
5653int
5654map_tos(char *s, int *val)
5655{
5656	/* DiffServ Codepoints and other TOS mappings */
5657	const struct keywords	 toswords[] = {
5658		{ "af11",		IPTOS_DSCP_AF11 },
5659		{ "af12",		IPTOS_DSCP_AF12 },
5660		{ "af13",		IPTOS_DSCP_AF13 },
5661		{ "af21",		IPTOS_DSCP_AF21 },
5662		{ "af22",		IPTOS_DSCP_AF22 },
5663		{ "af23",		IPTOS_DSCP_AF23 },
5664		{ "af31",		IPTOS_DSCP_AF31 },
5665		{ "af32",		IPTOS_DSCP_AF32 },
5666		{ "af33",		IPTOS_DSCP_AF33 },
5667		{ "af41",		IPTOS_DSCP_AF41 },
5668		{ "af42",		IPTOS_DSCP_AF42 },
5669		{ "af43",		IPTOS_DSCP_AF43 },
5670		{ "critical",		IPTOS_PREC_CRITIC_ECP },
5671		{ "cs0",		IPTOS_DSCP_CS0 },
5672		{ "cs1",		IPTOS_DSCP_CS1 },
5673		{ "cs2",		IPTOS_DSCP_CS2 },
5674		{ "cs3",		IPTOS_DSCP_CS3 },
5675		{ "cs4",		IPTOS_DSCP_CS4 },
5676		{ "cs5",		IPTOS_DSCP_CS5 },
5677		{ "cs6",		IPTOS_DSCP_CS6 },
5678		{ "cs7",		IPTOS_DSCP_CS7 },
5679		{ "ef",			IPTOS_DSCP_EF },
5680		{ "inetcontrol",	IPTOS_PREC_INTERNETCONTROL },
5681		{ "lowdelay",		IPTOS_LOWDELAY },
5682		{ "netcontrol",		IPTOS_PREC_NETCONTROL },
5683		{ "reliability",	IPTOS_RELIABILITY },
5684		{ "throughput",		IPTOS_THROUGHPUT }
5685	};
5686	const struct keywords	*p;
5687
5688	p = bsearch(s, toswords, sizeof(toswords)/sizeof(toswords[0]),
5689	    sizeof(toswords[0]), kw_casecmp);
5690
5691	if (p) {
5692		*val = p->k_val;
5693		return (1);
5694	}
5695	return (0);
5696}
5697